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204 Operations and Supply Chain
Management
Unit
Introduction to Operations and
Supply Chain Management
2
Operations and Supply Chain
Management
Meaning of Operations Management:
• It is an area of business concerned with the production of
products and services.
• It involves the responsibility of ensuring that execution is
effective (Customer satisfaction) as well as efficient (Cost
effective)
• It is execution of process that converts input resources into
final output.
• Initially it was production process only later on services
processes evolved rapidly.
Input(Resources) Process Output(Goods and
Services)
Operations System
Definition of Operations Management
• APICS, The American Association for Operations
Management: “ the field of study that focuses on the
effectively planning, scheduling, use and control of
manufacturing or service organization through the
study of concepts from design engineering, industrial
engineering, MIS, QM, production management,
inventory management, accounting and other
functions as they affect the organization.”
• Production and Operations Management(POM) is
defined as the design, operations and improvement of
the transformation process, which converts the various
inputs into the desired outputs of products and
services.
1900 1950
E-Commerce
SCM and TQM
Deming and
Juran
MRP
OB
Computation
Digital
Computer
OR in WW II
Inspection
Sampling
Quality
control charts
Scheduling
Scientific
Management,
Motion Study
Specialization
of labors
1737/031/2016 2000
4
6
Scope of Operations Management
In earlier days of manufacturing, production
activity was handled by person alone
doing repetitive work the operators
hence
were
mastering some of the skills also rate of
production was less. To counter the quantum of
reduced production the division of labor came
into existence.
Scope of Operations Management
Activities Relating to Production System Design
• Production Engineering
• Tools, Jigs and Fixtures
• Design, Development and Installation of equipments.
Activities Relating to Analysis and Control of Activities
• Production Planning
• Production Control
• Quality Control
7
Objectives of Operations Management
• Right Quality
• Right Quantity
• Right Time
• Pre-Established Cost
• Machinery and Equipment
• Materials
• Manpower
• Manufacturing Services
Ultimate
Objectives
Intermediate
Objectives
8
Significance of Operations
Management
Organization
Consumer
Investors
Employee
Suppliers
Community
Nation
9
Functions of Operations Management:
Case of Retail shop
Industrial Engineering
Work Measurement
Inventory Control
Quality Control
Production Planning
Production Control
Facilities Layout and Material Handling
Capacity Planning
Facilities Location
Method Study
Product Selection and Design
Production System Design
3/31/2016 9
E-War in India based on Operations
Management: The Caselet
July 2014
Operations Management: Systems
Perspective
Input (Labor,
Material, Capital)
Processing
- Process and Product Design
- Purchasing and Inventory Control
-Operations Planning and Control
Output
(Goods
and
Services)
Forecasting
Feedback
Quality Management Maintenance Management Process Improvement
Meaning and Definition of SCM
Supply Chain Management is management of a
network of interconnected businesses involved in the
ultimate provision of product and services packages
required by end customers. SCM deals with planning,
execution, control and monitoring of supply chain
activities with the objective of creating the value.
According to Christopher “ SCM is the management of
upstream and downstream relationship with suppliers
and customers to deliver superior customer value at
less cost to the supply chain as a whole.
Development of SCM: Physical
Distribution to Logistics to SCM
1900 1960 1980 1990
-
Operational activities
split among Marketing,
Manufacturing,
Finance.
Physical Distribution:
Warehousing+ MH+
Freight transportation
During 1970’s
operational
and cost
inefficiencies
Uncoordinated
functions into
a single cost
focused
integrated
department
Earlier
Logistics
Secondary
Function: -
Ranked After
Marketing,
Sales,
Production
now logistics
Management
conceived as
internal
strategic
advantage
SCM Phase:
Global
competition,
Emergence
of ICT,
Internal as
well as
external
competitive
advantage
Features of SCM
• Mutually sharing information: Making suppliers as a
partners by sharing non-core information. E.g. Sharing
of production plans, design of components.
• Focus on serving customers: Synergy and goal
congruence of supply chain members. E.g. Domino’s
Pizza.
• Integration: From Supplier’s suppliers to ultimate
customers. Integration can be accomplished through
CFT, in plant supplier personnel, third party services
provider. E.g. Courier tracking services.
• Mutually sharing channel risks and rewards: Sharing
of profit margins also sharing risk E.g. Obsolescence.
Scope of Supply Chain
Functional
Scope
All traditional
Business
Functions included
in the process of
SCM to get a
specific output.
Finance
+Marketing+
Operations+
Support Functions
Organizational
Scope
Inter firm
relationships are
relevant to the
participating firms
in the
implementation
and the process of
SCM
Objectives of SCM
 Systems orientation: synergy due to cooperation
and coordination.
Minimizing the time: Reduces the time required
to convert orders into cash.
Service to the customer: Delivering Values.
Minimizing WIP: Reduces total WIP.
Improving Quality: Improving operations
Reducing logistics cost: Efficient supply chain
reduces overall logistics cost and improving value.
Supply Chain Participants
 Raw Materials Suppliers
 Manufacturers
 Distributers
 Resellers
 Franchisers
 Sales Representative
 Logistics Providers
 Financiers
 Credit Support Providers
 End Users: Consumers
 Lessors: Leasing
Significance of Supply Chain
• Collaboration
• Lowered Costs
• Precise Purchasing
• Cycle Time
• Improved Alliances
• Increased Profits
• Increased Efficiency
• Minimum Delay
• Increased productivity
Functions of Supply Chain
Management
Strategic
• Supply chain Network Design
• Strategic partnerships
• IT Infrastructure
• Make or Buy decisions
Tactical
• Purchasing Decisions
• Inventory Decisions
• Transportation Strategy
• Production related decisions
Operational
• Daily Production and distribution planning
• Production scheduling
• Inbound and Outbound Operations
• Constraints Management
Issues on Operations and Supply Chain
Functions
1. Impact of Global Competition: Global view to gain
competitive advantage. How companies gone global:
Transportation & Communication (Internet), Reduced
Financial Regulations(FDI),Increased demand for
imported goods and services (Thyrocare labs)
2. Technological Change: Disruptive changes ( Mobile
phones in 2000 and 2014)
3. Ethical and Environmental: Some countries are more
concerned about these issues. Ethical treatment
includes bribery, conflicts of interests, discrimination
against minorities and women etc. E.g. Reliance Vs.
Tata Environmental issues includes quality of natural
resources, quality of life etc. E.g. Areva in Jaitapur,
Hybrid cars.
Challenges in Operations Management
Competitive Pressure due to economic Reforms
Falling Prices
Shrinking Delivery Quote
Build to Order Requirements
Growing Customer Expectation
Quality Revolution
• Fitness for use or purpose is a definition of quality that
evaluates how well product perform for its intended use.-
Joseph Juran (24 Dec. 1904-2008)
• Quality should be aimed at the needs of the customers
present and future.- Dr.Edwards Deming (1900-1993)
• Quality as an umbrella concept which integrates whole
spectrum of all improvement initiatives such as service
enhancement(Same day delivery), cost reduction (Tata
Nano), value analysis(Value stream mapping, E.g.
Smartphone applications)
• Quality is positioned as an input which accelerates
business improvements by shifting focus from Inspection
to quality control.
Definition of Quality from various
perspectives
Customers View: Meeting the requirements of the
customers ultimate goal of any business.
 Quality =Maximum Satisfaction (Wants and Needs)
 External customers and Internal customers concept
(Traditional business functions)
 Customers are ultimate judge of quality.
Manufactures View: Supply based and concerned with
engineering and manufacturing practices.
• Weight of Sugar specification could be 500 grams with
tolerance of 10 gram (Applicable to Gold/Silver?)
Definition of Quality from various
perspectives
Transcendent View: People learn to recognize
quality through the experience gained from
repeated exposure. Decision about the quality of
goods and services after used/consumed. E.g.
using transportation medium Volvo/MSRTC
Product View: Attributes of the product must have
something in terms of attributes that other
similar and competing products do not have. E.g.
RAM of the Computer
• A Quality product must be a market differentiator
and customers take pride in owning it.
Total Quality Management
• Total (Everyone) + Quality (Requirements Fulfilled)+
Management (Commitment) Customer driven QM.
• Fosters continuous improvement in an organization.
• TQM philosophy stresses a systematic integrated,
consistent, organization wide perspective involving
everyone & everything.
• TQM is totally integrated efforts for gaining
competitive advantage by continuously improving
every facet of an organization.
• Total quality can be viewed as a strategy itself as it
focuses on cost as well as differentiation.
Quality Revolution
1950
Japan-
Quality
movement
1970 Developed
1980 Europe
1990: Developing countries.
TQM
TQ
q
QA,
TQC, SQ
Quality Costs
Conformance
Prevention
Non-Conformance
Internal Failure
External Failure
Appraisal
67.7
7.8
3.5
14.1
6.9
Basic Work
Prevention
Appraisal
Internal Failure
ExternalFailure
Total cost of production
3/31/2016 28
Features of TQM
4C’s of
TQM
Commitment
Competence
Communica
tion
Continuous
Improvement
3/31/201
6
29
Satisfying
Customers
Systems/
Processes
People
Improvement
Tools
Innovation
Principles of Total Quality
• Customer Focus
• Leadership
• Employee Involvement
• Process Approach
• Systems Approach
• Continual Improvement
• Fact based decision making
• Mutually beneficial supplier relationships
Benefits of TQM
• Creates good corporate culture: TQM philosophy focus on
developing a culture that advocates total commitment to
customer satisfaction through continuous improvement.
• Better Employee Relations: Highly involved and motivated
workforce. How to Measure it? (Employee satisfaction,
attendance, retention rate, OHSAS, No. of suggestions
made {Japanese- Transparency: suggestion box})
• Increased Profitability: Market share can be increased
through improved quality/ value which in turn increases
Profitability. Also measured by sales per sales person, sales
made by each shop, return on assets etc.
• Improves operational performance: Quality and the costs
by mapping reliability, quality costs, adherence to delivery
schedules, defects and defectives, Inventory turnover etc.
Obstacles to TQM
1
• Lack of Top Management Commitment
2
• Should be Taken seriously by everyone.
3
• Removal of functional silos
4
• Lack of structure for TQM activities.
5
• Difficulty in implementation (Clear Understanding)
6
• Awards E.g. ISO 9000 should be a start point for quality
Quality Tools
5 S KANBAN
KAIZEN LEAN
FISHBONE
DIAGRAM
QUALITY
CIRCLE
Lean Philosophy
Value=Utility/Cost
Eg. Smart phone for youth
and basic phone for
adults.
Lean Management=
Identify the wastes
(Muda) and eliminate in
order to map value
added activities
involved in the process.
Efficiency Vs. Effectiveness
Unit
Operations Processes: Process
Characteristics in Operations
Operations Process
• Process is the mechanism behind transforming
inputs into output.
• A Process is an arrangement of resources that
produces some mixture of goods and services.
• Operation=Process 1+Process2 +…+Process N
• Each Process is an internal supplier and
internal customer for other processes.
• Satisfying Internal customer will lead to
satisfying ultimate consumer.
Operations Process: Inputs
Input
M’s
Manpower
Machine
Method
Material
Money
Operations Process: Inputs
Planning
Involves forecasting, identification, alternatives,
selection . Etc. (Itself is a Process has I/P- Forecasting
models, decision tree, operations research models)
Technology
Involves attainment, up gradation, adaptation,
improvement of technology. (R & D , Tech Ma Dept. uses
inputs such as technology forecasting, PLC etc.)
Time
Very critical while making business promise, E.g. Same
day delivery. (Processing time, lead time, waiting time,
Schedule of delivery Etc.)
Transformation Process
It is the conversion process that converts inputs
into output. Management should make these
as per the
The factors
processes efficient and effective
requirement to maximize profits.
influencing processors are:
• Location: At which conversion processes are
carried out. Eg. Plant, here plant location, layout,
buildings, plant facilities etc. factors affects the
conversion process.
• MHS: Selection, Capacity, layout, accounting and
replacement.
Transformation Process
• Product-Mix: The primary concern of the
processors is the product-mix. Decisions on
product mix are influenced by market potential ,
capacity, competition. Managers uses various
tools to determine optimum product mix. E.g.
Operations research tools.
• Cost related to labor, inventory, production: To
calculate labor cost method study, work study
techniques are used, production costs are
associated with production cost & overheads.
Inventory cost are highest contributor to product
cost (60% +) hence tight control is essential.
Outputs
• It is the end result in terms finished goods or
consumable services for immediate customers
and then it processed into final finished form. E.g.
concept of internal customer in hotels.
• Some factors influence output are:
Price
Delivery
Quality
Profitability
Transformation Process for Manufacturer
Inputs
Material, equipments, labor, technology
Transformation
Process
Quality of inputs monitored
Random Disturbances: Strikes, riots,
power failure, environment.
Quality of outputs monitored
Outputs
Machines, chemicals, consumer goods, scrap
Feedback Mechanism: Customer satisfaction survey, Increase in demand, customer complaints
Volume Variety Flow
Volume:
• Volume refers to the average quantity of
products produced in the manufacturing
system.
• Low volume: Buildings, Film production agency.
• Medium Volume: Automobile, Auto component
• High Volume: Pharma, FMCG etc.
Volume Variety Flow
Variety:
• No. of alternatives and variants of each product
that are produced in a manufacturing systems.
Variants of Samsung grand, neo etc. similarly for
services hotels improves variety of offerings with
respect to increasing popularity.
• Variety in various process in the system.
• Planning and scheduling
complex on account of
can become more
these choices in the
operating system.
Volume Variety Flow
Flow:
• Flow
phenomenon of transformation process,
indicates the nature and intensity of
and
provides an understanding of how materials gets
converted into finished goods stage.
• Understanding flow of process provides clues for
production planning and control involved in
complex operation processes.
• E.g. Flow involved in operations of making the
tea, flow involved in Supply Chain of Thyrocare.
Volume Variety Flow
Volume-Variety Relationship:
• Volume high, fewer varieties of products.
• Wide variety of flow and services, volume is low.
• Volume and variety affects flow patterns in a
manufacturing system, process design choices
available to an operations manager by studying
flow patterns and choosing the optimum
pattern.
Types of processes and operations
system
Continuous Flow System
• Assembly lines
• Mass Production
• Continuous Flow
– Synthetic Production
– Analytic Production
Intermittent flow system
• Project
• Batch Production
• Job/Job shop production
3/31/2016 46
Video:
https://www.youtube.com/watch?v=m62whN6CWBM
Process Product Matrix
Not Economical
Not Flexible
The Product-Process Matrix was first introduced by Robert Hayes and Steven
Wheelwright in the Harvard Business Review in 1979.
Operations Vs. Supply Chain
Discussion on LinkedIn forum:
https://www.linkedin.com/groups/Is-Supply-
Chain-part-Operations-
2060573.S.5954449886039597060?view=&ite
m=5954449886039597060&type=member&gi
d=2060573&trk=eml-b2_anet_digest-hero-1-
hero-disc-disc-
0&midToken=AQFNcGJJp4Qm1w&fromEmail=
fromEmail&ut=1v0qUDP5l4gCA1
SCM is more wider than operations Management
Facility Location
• The goal is to choose a
location that minimizes costs
while increasing operational
efficiencies and product
quality.
• To accomplish this goal,
management must consider
such regional costs as land,
construction, labor, local
taxes, energy, and local living
standards.
• In addition, management
must consider whether the
local labor pool has the skills
that the firm needs.
Objectives of Facility Layout
• A facility layout problem may have many
objectives. In the context of manufacturing
plants, minimizing Material handling costs is
the most common one.
• Includes efficient utilization of labor and
space. (Per sq. ft area of plant)
• Eliminate waste or redundant movement and
bottlenecks.(Weakest element in the link, Eg.
Chain, CPM-PERT in projects)
• Facilitate: Organization structure (According to
trade), communication and interaction between
workers, manufacturing process and visual
control( Andon signals, visual factory)
• Provide: convenience, safety and comfort of the
employees, flexibility to adapt to changing
conditions( Change in technology)
• Minimize: Manufacturing cycle time or
customer flow time, accidents, investment
(Unidirectional flow and lesser cross trafficking
and linkages)
Objectives of Facility Layout
Importance of Facility Layout
• Economical MHS: Material handling is major
contributor for higher manufacturing costs.
Minimization of long distance movements best
handling principle is no handling.
• Improved quality control: Specific quality control
and inspection check required for particular
operations. E.g. operation specific for drilling
operation quality check in terms of measuring the
bore size.
• Better Supervision: Better/ full view of the plant
and better control over manpower handling.
Importance of Facility Layout
• Effective use of floor area: every sq. cm area
is to be utilized in such a manner which will
maximize labor utilization (calculation of
every single minute spent Work/Method study
techniques) by multiple operations handled
by them at a time.
• Minimum equipment investment: Planned
machine balance and loading and location ( in
order to minimize the MHS).
Factors Affecting facility layout changes
Layout
Changes
Management
Policy
Manufacturing
process
Nature of
product
Volume of
Production
Type of
equipment and
infrastructure
Arrangement
of MHS
Basic types of Layouts
A. Process Layout
A. Used in a job shop for a low volume, customized
products
B. Product Layout
A. Used in a flow shop for a high volume, standard
products
Process Layout
Product Layout
Basic Types of Layouts
C. Fixed Position Layout
C. Used in projects for large products e.g., airplanes,
ships and rockets
D. Cellular layouts
C. A cell contains a group of machines dedicated for a
group of similar parts
D. Suitable for producing a wide variety parts in moderate
volume
Hybrid or Combined Layout: Combination of layouts.
Cellular Layout
Fixed Position
http://www.scrigroup.com/limba/engleza/105/Production-of-Quality-Goods-an65429.php
61
Factors T y p e of Layout
F i x e d Position P r o d u c t (Line) Cellular ( G T ) P r o c e s s (Functional)
1. T yp e of
O p e r a t io n
S h i p building,
L a r g e scale
project,
Construction or
Industrial project
C o n t in u o u s a n d
repetitive
S m a l l to m e d i u m
b a t c h
J o b or s m a ll b a t c h
2.
A r r a n g e m e n t of
facilities
Facilities m o v e s to
a f ix e d product/
project
P l a c e d a lo n g the
line of product f lo w
S im ila r parts a r e
g r o u p e d in part-
f am ily. F o r e a c h
part-f am ily o n e
m a c h i n e cells is
f o r m e d wh ic h
contains all
facilities n e e d e d b y
corresponding part-
f am ily.
G r o u p e d b y
specialty
3. C o s t of
layout
M o d e r a t e to l o w M o d e r a t e to h ig h M o d e r a t e to h ig h M o d e r a t e to l o w
4. Material
handling
M o d e r a t e L e s s L e s s H i g h
5. Material
travel
Variable p a t h F i x e d p a t h F i x e d p a t h Variable p a t h
6.
Utilization of
facilities
M o d e r a t e V e r y h ig h H i g h L o w
7.
O p e r a t in g facilities
G e n e r a l p u r p o s e Special p u r p o s e Special p u r p o s e G e n e r a l p u r p o s e
8.
E m p l o ye e skill
Unskilled/skilled Unsk illed Multi-skilled a s o n e
operator m a y
h a n d le m o r e t h a n
o n e operation
Sk illed
9. ( Q / P )
ratio : Q is
production
Quantit y P is
n u m b e r of products
or variety
N o r m a l l y I a s
single product
production
L a r g e ( Q / P ) M o d e r a t e ( Q / P ) S m a l l ( Q / P )
3/3h1t/t2p0:/1/6www.transtutors.com/homework-help/industrial-management/plant-layout/comparison-of-plant-
layouts.aspx
Activity Relationship Chart: Beyond the syllabus
• An activity relationship chart is a graphical tool
used to represent importance of locating pairs
of operations near each other.
• Importance is described using letter codes
defined below:
A - absolutely necessary
E- especially important
I- important
O - ordinarily important
U - unimportant
X- undesirable
Production area
Office rooms
Storage
Dock area
Locker room
Tool room
A A
A
O
O
U
O
O
U
U
U
U
E
X
I
Activity Relationship Chart
Example: It’s ordinarily important
to locate office rooms near
loading/unloading area
Services System Design
• Designing Service system is a creative process.
It is the way in service concept and service
package are provided to the consumer. E.g.
Thyrocare pathology labs or visit to the BBQ.
(Attempt to give special / standardized
Experience to the customer)
• The service delivery system is dictated by and
defined by the service concept includes core
service (food), supporting good and services
(ambience), facilitating goods and services
3/31
e
/20
x
16
perience
(billing), role of staff (waiter), consumer
64
Service System Design
• Two dimensions that affects the design of an
appropriate delivery system are as follows:
1. Characteristic of the Market:
Technical
comprises in
Dimension: What exactly
services (specification by
thyrocare labs related to blood sample)
Business Dimension: How operations decide
to provide a service (No. of vehicles to handle
the cargo)+ criteria to get considered by
customers (Cost and Service levels)related
3 PL services provided.
3/31t
/2o
016 65
Service System Design
• Two dimensions that affects the design of an
appropriate delivery system are as follows:
2. Service Complexity: The complexity of a
service itself will directly impacts the number
of steps to complete it. Some services are
simple in nature e.g. Experience of eating food
in canteen and some are very complex
processes. E.g. Experience of eating food in
Five star hotel.
3/31/2016 66
Service System Design Matrix
67
Low
High
Labor
Intensity
Low
High
Professional
Service
Service Shop
Mass
Service
Doctor,
FinancialAnalyst
Customization
College,
Hospitals
Service
Factory
Banking
Trucking
Designing service system is function of Location, facility design
and layout, Quality, equipment selection, service capacity etc.
one of the major factor is Frequency of the contact.
3/31/2016
Factors involved in Service System Design
Service
System
Design
Technology/
People Mix
Complexity
of Services
Categories
of Services
Volumes
Order
winningvs.
Order
qualifying
Nature of
the services
delivered
Design of Services System
Two types of design:
A. OverallDesign
 The Market: External factors that affects
services. Eg. Toy Library in emerging zone.
 The Services Encounter (Where and what is
delivered - setting expectations) and
Experience(The reality)
 Retention. (Repetitively providing same
experience without fail)
Design of Services System
Two types of design:
B. Detailed Design: Two principal phases are
1. Back office or front office: Canteen
2. The delivery system
Elements of Services System Design
• Facility layout and locations
• Servicescape
• Service process and Design
• Technology and IT support
• Organizational Support
Stages in services delivery design?
Tools for Designing Service System
• Services Blueprinting: Designing Services That
Deliver written by G. Lynn Shostack in Jan
1984 issue.
• The blueprint is most useful to managers
developing new services, others can apply the
same principles to test the quality of services
for which they contract/ existing.
• The issues
Identifying
involved
processes
are
B. Isolating the
points C. Establishing the time frame
disused as A.
fail
D
.Analyzing the Profitability
Service Blueprinting
Line of
Interaction
Line of
Visibility
Front
Office
Back
Office
Service
Blueprint
Service Blueprint for Shoeshine
services
3/31/2016 73
Source: https://hbr.org/1984/01/designing-services-that-deliver/ar/1
Profitability Analysis for given
example
Tools for Designing Service System
• QFD: Quality Function Deployment is, a focused
methodology for carefully listening to the voice of
the customer and then effectively responding to
those needs and expectations. It has four phases
namely Product Planning, Part Development, Process
Planning, Production Planning.
• The house of quality is a kind of conceptual map that
provides the means for inter-functional planning and
communications.
• People with different problems and responsibilities
can thrash out design priorities while referring to
patterns of evidence on the house’s grid.
House Of Quality
Technical Descriptors
(Voice of the organization)
Prioritized Technical
Descriptors
Interrelationship
between
Technical Descriptors
Customer
Requirement
s
(Voice
of
the
Customer)
Prioritized
Customer
Requirements
Relationship between
Requirements and
Descriptors
QFD is converting the customers requirement into technical specification
Tools for Designing Service System
• Servicescape: Concept developed by Booms and
Bitner to emphasize the impact of the physical
environment in which service process takes place. It
includes facilities exterior and interior environment.
E.g. Eating the food in McDonalds and local burger
shop. Framework follows SOR Theory:
1.Stimulus=Physical Evidence
2. Organisms=Customers and employee’s response
to stimuli
3.Response=
depending on
Changed/ unchanged
customer and employees
behavior
internal
reactions to physical evidence.
3/31/2016
Same as landscape development
77
Tools for Designing Service System
• Waiting line analysis: Customer enters into
the system wait in for queue for next available
server as per queue discipline customer is
selected for service and customer leaves the
system. System should be such that
discourage customers should be minimized.
E.g. Waiting in restaurants
3/31/2016 78
Source: http://www.ini740.com/F14/lectures/class_8.html
Unit
Production Planning & Control
(PPC)
Why do we Forecast?
• Dynamic
control
and Complex Environments: No
over market forces and product
• Short term fluctuations in production: To
avoid knee-jerk effect. E.g. Strikes of
demand. E.g. FMCG products.
transports
• Better Materials Management: Inventory
optimization can be achieved. E.g. Restaurant
3/31/s
20t
16
ocking of grains.
purchasing manager will use forecast for
82
Why do we Forecast?
• Rationalized manpower decisions: Resource
allocation can be improved with the use of
forecasting tools. E.g. Event Management
• Basis for planning and scheduling: Planning
and scheduling on rational basis. E.g.
Purchasing decisions for seasonal business.
• Strategic Decisions: Unfolding future is a key
factor in decision making. E.g. Purchasing of
oil barrels on long term contract.
Crude oil Prices March 2013- February
2015-March 2020?
Price Fluctuations
Appreciation and depreciation of USD-INR
3/31/201
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85
Date Open High Low Change %
1-Feb-15 62.02 62.58 61.56 0.27%
1-Jan-15 63.17 63.63 61.26 -1.61%
1-Dec-14 62.05 63.89 61.76 1.33%
1-Nov-14 61.5 62.25 61.29 1.31%
1-Oct-14 61.82 61.97 60.9 -0.86%
1-Sep-14 60.51 61.94 60.2 2.35%
1-Aug-14 60.74 61.76 60.35 -0.06%
1-Jul-14 60.07 60.56 59.53 0.82%
1-Jun-14 59.1 60.53 58.97 1.46%
1-May-14 60.26 60.27 58.25 -1.91%
1-Apr-14 59.93 61.19 59.57 0.55%
1-Mar-14 61.95 62.14 59.68 -2.88%
1-Feb-14 62.7 62.83 61.75 -1.42%
1-Jan-14 61.82 63.32 61.32 1.42%
1-Dec-13 62.35 62.53 60.83 -0.94%
1-Nov-13 61.5 63.9 61.5 1.26%
1-Oct-13 62.55 62.56 60.93 -1.54%
1-Sep-13 66.1 68.6 61.65 -4.74%
1-Aug-13 60.75 68.8 60.23 7.97%
1-Jul-13 59.46 61.21 58.69 2.22%
1-Jun-13 56.5 60.76 56.3 5.22%
1-May-13 53.8 56.76 53.63 5.39%
1-Apr-13 54.26 54.94 53.65 -1.11%
1-Mar-13 54.36 55.13 53.89 0.00%
Forecasting Time Horizon
3/31/2016 86
Source: Operations Management: Theory and Practice,B.Mahadevan , Page Number 398
Forecasting as a planning tool
• Every organization engages in annual planning
exercise wherein HoD’s of
departments (Marketing,
various
Finance,
Production, Materials etc.) share the data as
an input.
• Managerial decision making is often
complicated due to an element of uncertainty
in the variables affecting the decision making
process. E.g. Whenever the restaurant opens
start offering new cuisine the demand for its
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r
6
oduct is not known with certainty. 87
Forecasting as a planning tool
• Forecasts are estimates of the timing and
magnitude of the occurrence of future event.
• Since these decisions involves cash flow and
time, accurate estimates of the future events
for which decision has been made is crucial.
• Forecasting is the branch of (OM) operations
management that addresses these issues and
provides the manager with a set of tools and
techninuques for Estimation process.
Functions of Forecasting
An Estimation Tool.
A way of addressing complex and uncertain
environment surrounding business decision
making.
A tool for predicting events related to
operations planning and control.
A vital pre-requisite for planning process in
organization.
Design of Forecasting Systems
Develop the forecasting logic by identifying the
purpose, data and models to be used.
Establish control mechanisms to obtain reliable
forecasts
Incorporate managerial consideration in using the
forecasting system.
Formulas to Calculate Forecast
errors
Forecast errors=114-118=-4
SFE=11-4=7
Absolute Deviation= I-4I =4
Cumulative Absolute deviation=11+4=15
MAD=15/2=7.5
Absolute Error= Actual-Forecast/ Actual =114-118/114=3.5%
MAPE=(9.17%+3.5%)/2= 6.35%
Squared Error= 4 X 4 =16
MSE =(121+16)/2 = 68.5
TS= SFE/MAD =7/7.5=0.93
Accuracy of Forecasts
Forecasting model predicted the demand as
2500 units.
Case I: Actual demand 3500 Units- Severe
Shortages , Last minute rescheduling of
production, rush purchasing and expediting
deliveries.
Case II: Actual demand 1000 Units- Excessive
build up of raw materials and non-moving
inventory.
Accuracy of Forecasts
Forecast Error (FE): Forecast error for period t
έi = Dt-Ft ( Period 1: 100-50, Period 2: 100-145)
Positive value of έi will indicate underestimation
of demand and vice versa.
Sum of errors: Sum of errors during the period
of consideration. Even when system is not
performing well SFE value will be near to 0.
SFE= Σ έi (limits for i is from 1 to n)
Accuracy of Forecasts
Mean Absolute Deviation: (MAD) Take the
absolute value of έt and average it over
the n periods to get alternate and better
picture of the forecast.
Mean Absolute % error : (MAPE) Each
absolute error term could be expressed
as a percentage of the demand and new
measure computed.
Accuracy of Forecasts
Mean squared error: (MSE) This measure
is obtained by taking mean of the
squares of the error terms.
Tracking Signal :(TS) It is the ratio of SFE
and MAD.
No numerical is expected on the topic of
forecasting. Refer to Excel Link
Planning Hierarchies in Operations
Source: Operations Management: Theory and Practice, B.Mahadevan , Page
Number 430
Sources of Data
• Forecasting is often only as good as the
quality and quantity of data available.
• Extrapolative methods of forecasting make
use of past data to prepare future estimates.
Eg. Analyzing the demand pattern.
• Causal methods of forecasting analyze the
data from the view point of cause and effect
relationship. E.g. increase in repo rate and
effect on stock prices.
Sources of Data
Sources of data for forecasting are:
• Sales Force Estimates: Field executives will
give input on actual/ factual demand.
• Point of sales (POS) data: ITES and bar-coding
enables organizations e.g. Wal-Mart, Big
Bazaar to capture real time data.
• Forecast from supply chain partners: Supply
chain partners provide critical info on market
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ntiments and projections etc.
trends, competitors performance, market
98
Sources of Data
Sources of data for forecasting are:
• Trade Industry association/ journals: The
journals provides syndicated and researched
data on industry trends and forecasts.
http://www.asa.in/pdfs/surveys-reports/auto-
and-auto-ancillaries-sector-in-india.pdf
• B2B Portals / Market places: Digital versions
of Trade Industry association publications/
journals.
http://indiaautoreport.com/category/forecast
-update/
3/31/2016 99
102
Sources of Data
Sources of data for forecasting are:
• Economic Surveys and Indicators: E.g. Mobile
data traffic can
research based
be forecasted with
on TRAI and
joint
Cisco
http://www.cisco.com/assets/sol/sp/vni/forec
ast_highlights_mobile/index.html
• Subjective Knowledge: Experience and
knowledge of senior management should be
used as insights for planning
103
Capacity Planning
(No numerical is expected)
• Demand=250
• Hours/ unit of production= 100
• Demand (hours)=250 X100 =25000
• No. of Working days=23
• No. of Workers =125
• Capacity Available= 125 X 23 x 8 =23000
• Supply –Demand=23000-25000=I -2000 I
• Calculate for Q= 350, Q=100.
104
Aggregate Production Planning
Aggregate Production Planning (APP)
decisions deals with the amount of resources
to be committed, the rate at which goods and
services need to be produced during the
period, the inventory to be carried forward
form one period to the next.
APP exercise is done in an organizations to
match the demand with the supply on a
period by period basis in a cost effective
manner
105
The Need for Aggregate Production
Planning
• Demand Fluctuations
• Capacity Fluctuations
• Difficulty level in altering production rates
• Benefits of multi period Planning
Resources Production Inventory Aggregate
June to
September
100 Operators
one shift only
100
Engines/Days
Carry 5% Manpower?
October to
January
100 Operators
two shifts
150 Engines/
Day
Carry 10% Inventory?
February to May 100
Three Shifts
240 Engines/
Day
Carry 20% Production?
Framework for APP Exercise
Alternatives to managing demand: Reservation of
capacity, Influence Demand
106
107
Alternatives for Managing supply
• Inventory based alternatives:
 Build Inventory
 Back log / Shortage
• Capacity adjustments:
 Hiring/ Lay off of workers
 Varying shifts
 Varying Working Hours
• Capacity augmentation:
 Subcontract/ Outsource
 De-bottleneck
 Add new capacity
Basic strategies for APP Exercise
Beyond the syllabus
Do not disturb
existing production
system
Mismatch is addressed
by variety of capacity
related alternatives
108
Master Production Schedule
Master Production Schedule (MPS) is the
process by which disaggregation of varieties is
done.
At APP level forecast demand is normally
taken for the purpose of estimating the
capacity required however actual orders when
received gives better visibility for planning.
MPS uses actual and most recent information
while revisiting the planning problem and
sures specific resources available.
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n
6 107
110
Master Production Schedule
As customers get amended and/or cancelled,
marketing dept. is interested to know scope
for accepting new enquiries and delivery
commitment.
MPS module serves the important purpose of
computing capacity available to promise.
MPS determines what needs to be ultimately
produced and not what is demanded.
111
Master Production Schedule
First Stage: Update the projected demand
based on earlier forecast and current market
information.
Second Stage: Disaggregation of product
information and relating it to specific material
and capacity requirements.
Based on this, plans are re-worked in iterations
and executable/ viable plan is prepared.
Product Structure
Level 0
Level 1
Level 2
Level 3
110
Can you discuss levels of Car, Mobile as a product?
Levels of product Bill of Materials
http://dowap.eu/drp/
111
Dependant Demand
• The Product structure depicts the dependency
relationships among various items that make
up the final product. E.g. Demand for pens is
independent demand while demand for refills
required for a pen is dependant demand.
• Due to causal relationship with other items in
the system demand estimation can be done
through simple planning methodologies. Due
to uncertainty independent demand items
can not be made available to 100% service
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vel. 112
115
MRP
• Material requirement planning is a structured
approach
launching
that develops
orders for materials
manufacturing system and ensures
schedules for
in any
the
availability of these at right time and at the
right place.
116
CRP
• Capacity requirement planning is a technique
that applies the MRP logic to address the
capacity issues in an organization. ( Refer slide
of capacity planning)
• Inputs for this are capacity status, process
plans, planned orders released by MRP.
• Outcome of this activity is loading schedule
for each resource.
117
DRP
• DRP exercise will help organizations and their
supply chain partners to jointly plan and
reduce investment in the supply chain, they
will be in position to respond to changes in
the demand (surges and drops) and have a
cost effective operations.
118
MRP II
• MRP II (1980) is extended version of MRP and
consists of different modules related to
different business functions.
Refer the topic evolution of SCM
ERP
RAMCO Case Study
119
Overview of MRP
121
Scheduling and Loading
Job Shops and
Scheduling of Flow Shops
Johnson’s Rule
Gantt Charts
Self Study Topics: Refer B. Mahadevan,
Operations Management, Page no. 510 -525
Unit
Inventory Planning and Control
1
2
123
What is Inventory
• Any idle resource that can be put to some
future use. (Lower or Higher???)
• Inventory is nothing but stock of fixed and
consumable items required for operations,
aggregate of these items which are either held
for sale or yet to be consumed in production
process.
• Inventory looked by Management- Marketing:
High, Finance::Low, Production: Enough
Stores::Low (Why?)
124
High or Low Inventory?
Encouraging Factors
• Minimize Backorders
• Demand Fluctuations
• Economies of Scale
• Discounts
• Purchase Costs
• Transportation
• Material Handling
• Economies of Scope
Discouraging Factors
• Seasonal Goods
• Fluctuations
• Carrying Costs
• Shorter PLC
• Obsolescence
• Theft
• Storage Space
125
Inventory Planning
Continuous Demand
• Independent demand items
are continuous demand
items. Eg. Bike, Pen
• Continuous demand for an
item will require constant
availability of items and
•
periodic replenishments
Non availability will lead to
backorders
goodwill,
, loss of
extra cost for
delivery commitments
• In
Intermittent Demand
case of dependant
demand items the demand is
always derived. Eg. No. of
engines required pr month.
• Definite demand for spare
parts is to determined on
some basis. Eg. Tail lamp.
• Hence planning
independent demand
for
items
should include some cushion
for handling uncertainty
Why to Control Inventory
ROI= Profit
Fixed Assets+ Current Assets (CA) 
CA :Materials+ Bills Receivable+ Cash in hand
Materials cost is are almost 60-70% of total
cost, hence Inventory is called as a gold mine
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127
Types of Inventory
• Raw Materials
• Semi-Finished Goods
• Work in Process
• Finished Goods
• Tools
• Consumable
• Machinery Spares
128
Types of Inventory
5 Basic types of inventory are:
1. Cyclic Inventory: Cyclic inventory goes
through a saw toothed pattern each cycle
begins with replenishment and ends with
complete depletion of the inventory.
2. Decoupling Inventory: Based on workstation
capabilities , resource availability and
bottlenecks; buffer inventory is created at
every process to enable decentralized
planning and control of operations.
129
Types of Inventory
5 Basic types of inventory are:
3.Seasonal Inventory: Organizations carry
inventory to meet fluctuations in demand.
4.Pipeline Inventory: Inventory carried because
of non-zero lead time for order, transport and
receipt of material from suppliers.
5.Safety Stock: carrying average inventory will
take care of demand 50% of the time
(Stochastic demand- Probability Distribution)
Inventory Costs
Inventory Carrying Cost:
• All the cost element
involved in storage and
warehousing activities.
• Eg. Cost of warehousing,
Salary of the stores.
• It is denoted as Cc and
has linear
graphically it
relationship with level of
inventory held.
= Cc Q/2
Cost of ordering:
• Many of the ordering costs
are fixed in nature hence
larger order quantity
require fewer orders.
• Eg. Cost
supplier search till
generation, Travel
associated with
PO
to
supplier and communicate,
Salaries of Purchase officer.
• It is denoted as Co
=CO (D/Q)
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120
Inventory Costs
• Setup Cost: Whenever the component is
produced in house. The time taken in setting
up the machine, consumables and tools used
for this purpose are major elements of the
setup cost. Denoted by Co (Similar as ordering
cost concept of internal supplier)
• Cost of Shortage: Because of sudden surge in
demand, Lot is rejected delivery schedules not
met by the customers, shortage arises. Similar
as opportunity costs. Denoted by Cs
130
EOQ Model
• There are two costs involved when an item is
procured and stored.
I. Ordering Cost: Procuring activity controlled
by no. of orders/year/item.
II. Carrying costs: Storage activity cost
proportionate to quantity received.
• It can be seen that these two costs oppose
each other. It is essential to find out quantity
which balances these two costs such quantity
is called as EOQ.
EOQ Model
133
134
Assumptions in Basic EOQ model
• The demand is known with certainty and is
continuous over time.
• There is an instantaneous replenishment of items.
• The items are sourced from external suppliers.
• There are no restriction on quantity ordered.
• There are no preferred item quantities for the
items
• No price discounts is offered when order size is
large.
135
Following notations are used
• Q = Quantity ordered each time
• Q* = Optimum quantity of inventory ordered
for minimum total cost= EOQ
• D = Annual demand of parts (in unit)
• C/Cu = Cost of inventory per unit item
• CC = Carrying cost per unit of individual item,
expressed as a percentage of unit cost
• CO = Ordering, set-up or procurement cost per
order
• TC = Total annual costs
136
Formula for EOQ
• Carrying Cost =(Q/2) X Cc
Average inventory carried during the year = Q +
O/2 = Q/2
•Ordering Cost= (D X Co)/ Q
No. of orders per year = D/Q
In ideal case Co=Cc
D X Co = Q X Cc
Q 2
Formula for EOQ
 For total cost minimization;
DCO ( - 1/q2) + cc/2 = 0
cc/2 DCo/q2
 Or,
 Or,
 Or, Q = √2DCo/cc
 d2/dq2 (TC) = COD ( - -2/qs ) =2CoD/q3 (a positive quantity)
 For total inventory cost minimization, we have defined
Q as Q* and we will call it as economic order quantity
 EOQ= Q* = √2DCo/cc
TC= D X Co + Q X Cc + D X Cu………. (Cu= Per unit Cost)
Q 2
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138
Example
Q. 1 A grocery store sells 10 cases of Green
Tea each week. Each case costs Rs.80. The cost
of ordering is Rs.10 per order. Holding or
carrying cost is estimated to be 30% of the
inventory value per year.
I. How often is the Green Tea ordered?
II. Calculate the EOQ
139
Solution
D = 520 (Cases/Year)…… (10 cases/week * 52 weeks/year)
Co= Rs 10 (per order)
Cc= 30% (or 0.30) of Cu (per unit/annum)= .30 X 80=24
Cu = Rs 80 percase
EOQ=√2 Co D/Cc=√2*10*520/24
= 20.8= 21cases per order (How Much Decision)
How often is the coffee ordered? (When Decision)
520/21 » 25 orders per year.
Or every 15 days ( 365/25 =15 )
140
Example
Annual Demand for the item (D)=2500 Boxes
No. of Working Days=250
Average Daily Demand=2500/250 = 10 Boxes
Unit Cost of the item= Rs. 750
Inventory Carrying Cost Cc=18% per unit/ annum
Cc= .18 X 750 = 135 per unit per year
Ordering Cost Co= Rs. 1080 per order
141
Solution
• The How Much decision
Q* = √2DCo/Cc
=√2 X 1080 X2500 / 135 =200 Boxes
No. of orders placed
= D/ Q = 2500 /200 = 12.5 = Aprox. 13
• The When Decision
Time between orders= Q/D = 200/2500 = 0.08
=> 0.08 X 250 = 20 Days
140
Solution
Total Cost of the Plan
TC= D X Co + Q X Cc + D X Cu
Q 2
=2500 X 1080 / 200 + 200/2 X 135 + 2500 X 750
= 13500+ 13500 + 1875000
=Rs. 1902000
143
EOQ with Quantity Discounts
• Annual Demand = 5000 units
• Ordering cost = $49
• Annual carrying charge = 20%
• Unit price schedule:
Quantity Unit Price
0 to 999 $5.00
1000 to 1999 $4.80
2000 and over $4.75
Solution
144
Solution
145
146
Inventory Control System
The Continuous Review System (Q System):
Also called as two-bin system. As the material
getting consumed the larger bin is emptied
first as soon as larger bin is empty, order is
placed with the supplier for predetermined
quantity. During lead time material from
smaller bin (equal to reorder point) is
consumed and during replenishment smaller
bin is filled first.
Inventory Control System
The Periodic Review System (P System):
• After every specific time interval inventory is
reviewed and replenished up to certain level.
• The P-system does not have an economic order
quantity since it varies according to demand.
• The P-system requires a larger safety stock for
the same service level because protection from
shortage for longer period of time.
• The P system is responsive to demand and
enables ordering multiple items from the same
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Order up to level
148
(P System):
(Q System):
149
Selective Control of Inventory
• Selective control is essential because uniform
control is A. Expensive B. Gives diffused results.
• Selective control means variation in method of
control from item to item based on selective
basis.
Two major categories other than ABC analysis:
I. Procurement Basis: VED, SDE, SOS, GOLF
II. Storage Basis: HML, FSN, XYZ
150
ABC Analysis
151
Industrial Example
150
Step I: Calculate Annual
Consumption
153
Step II: Descending value+
Cumulative Value + Define Classes
154
Step III: Summarize
Close day to day control
155
Regular Review
Infrequent Review
Step IV : Draw Pareto Chart
•The boundary between class A
and class B and Similarly Class B
and Class C might not be as
sharply defined.
•The purpose of ABC classification
is to ensure that purchasing dept.
use resources to maximum
efficiency by concentrating on
those items that have the greatest
potential savings.
•Ideal ratio is 70% consumption
value by 5-10% of items are called
as A class items. Practically it
varies based on inventory policy of
an organization.
156
Example
157
Unit
Supply Chain Management
3/31/2016 157
Integrated Supply Chain
Management
Integrated supply chain Framework: Integration of value creation processes
Page no.6 SCLM, Tata McGraw Hill, Bowersox and Closs
Achieving Strategic Fit
160
161
Four forces of that drives SCM
Integrative Management
1. Collaboration: Sharing of operating information,
technology and risks as ways to increase
competitiveness. Collaborative Competitiveness
2. Enterprise Extension: Information Sharing
paradigm and process specialization paradigm
3.Integrated Services Providers: 3PL(Assets are
owned) and 4 PL (Non asset based)
3PL means third party logistics= Transportation+
Warehousing
160
Four forces of that drives SCM
Responsiveness
1. Push (Anticipatory) Business Model
2. Pull (Responsive) Business Model
Forecast Buy Material Manufacture Warehouse Sell Deliver
Sell Buy Material Manufacture Deliver
163
Four forces of that drives SCM
Responsiveness
3. Postponement: It is a business strategy that
maximizes possible benefits and minimizes
risks by delaying further investment into the
product. Form postponement – Eg. Fitting
accessories to the car. Logistics
postponement- Eg. packaging of sugar at the
supermall that differentiates the product.
164
Four forces of that drives SCM
Globalization: With the emergence of global
 Businesses complexity,
 Uncertainty,
 Risks improved drastically.
Four forces of that drives SCM
Financial Sophistication
1. Cash to Cash Conversion (CCC)
CCC= Days Outstanding of following factors
(Inventory + Sales-Payable)
Cash in purchasing inventory to Cash received
upon selling the inventory.
2. Dwell Time Minimization: If assets are sitting
idle instead adding value to SCM processes.
3. Free Cash Spin: Minimize the cash committed to
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he SCM performance. Eg. Inventory 163
Cash to Cash Conversion Cycle
Cycle View of Supply Chains
Integration
167
Key Issues in SCM
Key
Issues
in SCM
Improving
Flexibility
Lead Time
Reduction
Minimizing
Uncertainty
168
Focusingon
A category
Minimizing
Variety
Enablers of SCM
Sourcing Transportation Facility Inventory Information Pricing
169
170
Customer Service
7 R’s of Customer Service:
I. Product
II. Price
III. Place
IV. Quantity
V. Quality
VI. Customer
VII.Condition
Customer Satisfaction
Measuring quality in services set up is inherently
complex and heterogeneous.
Suggested by A. Parasuraman, V
.A. Zeitthamal
and L.L. Berry
Called as PZB Model/ SERVQUAL model.
Paper Title “ A Conceptual model of service
quality and its implication for future research”
Journal of Marketing: 1985
Dimensions of SERVQUAL are Reliability,
A
3/s
31s
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PZB- GAP model
How to
reduce
service gaps
Gap 4:
Brochures
Pamphlets
Gap 1:
Frequent
Feedback
Gap 3:
Training
Programs
Gap
Number
Description Feature 1 Feature 2 Feature 3 Example
1 Service firm What are the What features What levels of Hot and Spicy
executive may not Consumer a services performance Food
understand wants must have should be
delivered
2 Means to meet the Knowledge of Means are Management Decoration,
expectation are consumer known but commitment Pots
absent expectation they are is lacking
exists but not expensive
the perceived
means to
deliver
3 Variability in SOP and Lack of skills Behavioral Mood,
employees Policies are training and attitude Perception,
performance absent difference. Health
4 There are problems More Firm tend to Poor quality
arising out of promises that neglect back of Oil, Dal,
communication are not office quality Potato etc.
delivered
5 3/31/201 6
Is a function of four gaps. 170
Review of Core Concepts of OSCM
Lean Manufacturing
https://youtu.be/gWCj5pm-df8
Supply Chain Management
https://youtu.be/raqi4gjMLm8
Product Process Matrix
https://youtu.be/m62whN6CWBM
Service BluePrint
https://youtu.be/gE_SNjP7Pik
Production Planning and Control
https://youtu.be/Fxow6-LeQc8
Scheduling
Selective Inventory Control
Supply Chain Management
https://youtu.be/NsCuobuK8xg
Generalised Supply Chain Model
https://youtu.be/vp196wKKdpA
Suggested Text Books
1. Operations Management Theory & Practice,
B.Mahadevan , Pearson.
2. Operations Now - Supply Chain Profitability &
Performance, Byron J. Finch, McGraw Hill.
3. Production and Operations Management, R B
Khanna, PHI, New Delhi.
4. Production & Operations Management, S N
Chary, McGraw Hill.
5. Supply Chain Management - Strategy, Planning &
Operation,Sunil Chopra, Peter Meindl, D. V. Kalra,
Pearson Education.
Suggested Reference Books
1. Supply Chain Logistics Management, Donald
Bowersox, David Closs, M Bixby Cooper, Tata
McGraw Hill.
2. Operations Management, William J. Stevenson,
TMGH.
3. Operations Management, Lee Krajewski, Larry
Ritzman, Manoj Malhotra, Pearson Education.
4. Introduction to Materials Management , J.R.
Tony Arnold, Stephen Chapman, Ramakrishnan,
Pearson.
Audio Visual Link (Case/Best Practice)
1. Industrie 4.0 - The Fourth Industrial
Revolution, Siemens, https://www.youtube.com/watch?v=
HPRURtORnis
2. Markus Lorenz: Industry 4.0: how intelligent machines
will transform everything we know, TED
Institute, https://www.youtube.com/watch?v=uBZmJOHIN
8E
3. In Depth: Industrial Revolution 4.0, Rajya Sabha
TV,https://www.youtube.com/watch?v=RO4GNVQMQnM
4. Future Manufacturing 4.0: Toyota innovation, robotics,
AI, Big Data. Futurist keynote speaker, Futurist Keynote
Speaker Patrick Dixon -
FUTURE, https://www.youtube.com/watch?v=rt65167tZlQ
Journal
1. Industry 4.0 Concept: Background and Overview -
Online-Journals.org, online-journals.org/index.php/i-
jim/article/view/7072
2. Industry 4.0 implies lean manufacturing - Journal of
Industrial, www.jiem.org › Home › Vol 9, No 3 (2016) ›
Sanders
3. Special Issue on Industry 4.0 and Smart, Journals –
Elsevier, https://www.journals.elsevier.com/.../special
-issue-on-industry-40-and-smart-manufact
4. Industry 4.0 – JOURNALS of Scientific Technical
Union of
Mechanical, https://stumejournals.com/i4.htm
Thank You and All the Best!

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CR 2 Operations management MBA distance SPPU II sem 1.pptx

  • 1. 204 Operations and Supply Chain Management
  • 2. Unit Introduction to Operations and Supply Chain Management 2
  • 3. Operations and Supply Chain Management Meaning of Operations Management: • It is an area of business concerned with the production of products and services. • It involves the responsibility of ensuring that execution is effective (Customer satisfaction) as well as efficient (Cost effective) • It is execution of process that converts input resources into final output. • Initially it was production process only later on services processes evolved rapidly. Input(Resources) Process Output(Goods and Services) Operations System
  • 4. Definition of Operations Management • APICS, The American Association for Operations Management: “ the field of study that focuses on the effectively planning, scheduling, use and control of manufacturing or service organization through the study of concepts from design engineering, industrial engineering, MIS, QM, production management, inventory management, accounting and other functions as they affect the organization.” • Production and Operations Management(POM) is defined as the design, operations and improvement of the transformation process, which converts the various inputs into the desired outputs of products and services.
  • 5. 1900 1950 E-Commerce SCM and TQM Deming and Juran MRP OB Computation Digital Computer OR in WW II Inspection Sampling Quality control charts Scheduling Scientific Management, Motion Study Specialization of labors 1737/031/2016 2000 4
  • 6. 6 Scope of Operations Management In earlier days of manufacturing, production activity was handled by person alone doing repetitive work the operators hence were mastering some of the skills also rate of production was less. To counter the quantum of reduced production the division of labor came into existence.
  • 7. Scope of Operations Management Activities Relating to Production System Design • Production Engineering • Tools, Jigs and Fixtures • Design, Development and Installation of equipments. Activities Relating to Analysis and Control of Activities • Production Planning • Production Control • Quality Control 7
  • 8. Objectives of Operations Management • Right Quality • Right Quantity • Right Time • Pre-Established Cost • Machinery and Equipment • Materials • Manpower • Manufacturing Services Ultimate Objectives Intermediate Objectives 8
  • 10. Functions of Operations Management: Case of Retail shop Industrial Engineering Work Measurement Inventory Control Quality Control Production Planning Production Control Facilities Layout and Material Handling Capacity Planning Facilities Location Method Study Product Selection and Design Production System Design 3/31/2016 9
  • 11. E-War in India based on Operations Management: The Caselet July 2014
  • 12. Operations Management: Systems Perspective Input (Labor, Material, Capital) Processing - Process and Product Design - Purchasing and Inventory Control -Operations Planning and Control Output (Goods and Services) Forecasting Feedback Quality Management Maintenance Management Process Improvement
  • 13. Meaning and Definition of SCM Supply Chain Management is management of a network of interconnected businesses involved in the ultimate provision of product and services packages required by end customers. SCM deals with planning, execution, control and monitoring of supply chain activities with the objective of creating the value. According to Christopher “ SCM is the management of upstream and downstream relationship with suppliers and customers to deliver superior customer value at less cost to the supply chain as a whole.
  • 14. Development of SCM: Physical Distribution to Logistics to SCM 1900 1960 1980 1990 - Operational activities split among Marketing, Manufacturing, Finance. Physical Distribution: Warehousing+ MH+ Freight transportation During 1970’s operational and cost inefficiencies Uncoordinated functions into a single cost focused integrated department Earlier Logistics Secondary Function: - Ranked After Marketing, Sales, Production now logistics Management conceived as internal strategic advantage SCM Phase: Global competition, Emergence of ICT, Internal as well as external competitive advantage
  • 15. Features of SCM • Mutually sharing information: Making suppliers as a partners by sharing non-core information. E.g. Sharing of production plans, design of components. • Focus on serving customers: Synergy and goal congruence of supply chain members. E.g. Domino’s Pizza. • Integration: From Supplier’s suppliers to ultimate customers. Integration can be accomplished through CFT, in plant supplier personnel, third party services provider. E.g. Courier tracking services. • Mutually sharing channel risks and rewards: Sharing of profit margins also sharing risk E.g. Obsolescence.
  • 16. Scope of Supply Chain Functional Scope All traditional Business Functions included in the process of SCM to get a specific output. Finance +Marketing+ Operations+ Support Functions Organizational Scope Inter firm relationships are relevant to the participating firms in the implementation and the process of SCM
  • 17. Objectives of SCM  Systems orientation: synergy due to cooperation and coordination. Minimizing the time: Reduces the time required to convert orders into cash. Service to the customer: Delivering Values. Minimizing WIP: Reduces total WIP. Improving Quality: Improving operations Reducing logistics cost: Efficient supply chain reduces overall logistics cost and improving value.
  • 18. Supply Chain Participants  Raw Materials Suppliers  Manufacturers  Distributers  Resellers  Franchisers  Sales Representative  Logistics Providers  Financiers  Credit Support Providers  End Users: Consumers  Lessors: Leasing
  • 19. Significance of Supply Chain • Collaboration • Lowered Costs • Precise Purchasing • Cycle Time • Improved Alliances • Increased Profits • Increased Efficiency • Minimum Delay • Increased productivity
  • 20. Functions of Supply Chain Management Strategic • Supply chain Network Design • Strategic partnerships • IT Infrastructure • Make or Buy decisions Tactical • Purchasing Decisions • Inventory Decisions • Transportation Strategy • Production related decisions Operational • Daily Production and distribution planning • Production scheduling • Inbound and Outbound Operations • Constraints Management
  • 21. Issues on Operations and Supply Chain Functions 1. Impact of Global Competition: Global view to gain competitive advantage. How companies gone global: Transportation & Communication (Internet), Reduced Financial Regulations(FDI),Increased demand for imported goods and services (Thyrocare labs) 2. Technological Change: Disruptive changes ( Mobile phones in 2000 and 2014) 3. Ethical and Environmental: Some countries are more concerned about these issues. Ethical treatment includes bribery, conflicts of interests, discrimination against minorities and women etc. E.g. Reliance Vs. Tata Environmental issues includes quality of natural resources, quality of life etc. E.g. Areva in Jaitapur, Hybrid cars.
  • 22. Challenges in Operations Management Competitive Pressure due to economic Reforms Falling Prices Shrinking Delivery Quote Build to Order Requirements Growing Customer Expectation
  • 23. Quality Revolution • Fitness for use or purpose is a definition of quality that evaluates how well product perform for its intended use.- Joseph Juran (24 Dec. 1904-2008) • Quality should be aimed at the needs of the customers present and future.- Dr.Edwards Deming (1900-1993) • Quality as an umbrella concept which integrates whole spectrum of all improvement initiatives such as service enhancement(Same day delivery), cost reduction (Tata Nano), value analysis(Value stream mapping, E.g. Smartphone applications) • Quality is positioned as an input which accelerates business improvements by shifting focus from Inspection to quality control.
  • 24. Definition of Quality from various perspectives Customers View: Meeting the requirements of the customers ultimate goal of any business.  Quality =Maximum Satisfaction (Wants and Needs)  External customers and Internal customers concept (Traditional business functions)  Customers are ultimate judge of quality. Manufactures View: Supply based and concerned with engineering and manufacturing practices. • Weight of Sugar specification could be 500 grams with tolerance of 10 gram (Applicable to Gold/Silver?)
  • 25. Definition of Quality from various perspectives Transcendent View: People learn to recognize quality through the experience gained from repeated exposure. Decision about the quality of goods and services after used/consumed. E.g. using transportation medium Volvo/MSRTC Product View: Attributes of the product must have something in terms of attributes that other similar and competing products do not have. E.g. RAM of the Computer • A Quality product must be a market differentiator and customers take pride in owning it.
  • 26. Total Quality Management • Total (Everyone) + Quality (Requirements Fulfilled)+ Management (Commitment) Customer driven QM. • Fosters continuous improvement in an organization. • TQM philosophy stresses a systematic integrated, consistent, organization wide perspective involving everyone & everything. • TQM is totally integrated efforts for gaining competitive advantage by continuously improving every facet of an organization. • Total quality can be viewed as a strategy itself as it focuses on cost as well as differentiation.
  • 27. Quality Revolution 1950 Japan- Quality movement 1970 Developed 1980 Europe 1990: Developing countries. TQM TQ q QA, TQC, SQ
  • 28. Quality Costs Conformance Prevention Non-Conformance Internal Failure External Failure Appraisal 67.7 7.8 3.5 14.1 6.9 Basic Work Prevention Appraisal Internal Failure ExternalFailure Total cost of production 3/31/2016 28
  • 29. Features of TQM 4C’s of TQM Commitment Competence Communica tion Continuous Improvement 3/31/201 6 29 Satisfying Customers Systems/ Processes People Improvement Tools Innovation
  • 30. Principles of Total Quality • Customer Focus • Leadership • Employee Involvement • Process Approach • Systems Approach • Continual Improvement • Fact based decision making • Mutually beneficial supplier relationships
  • 31. Benefits of TQM • Creates good corporate culture: TQM philosophy focus on developing a culture that advocates total commitment to customer satisfaction through continuous improvement. • Better Employee Relations: Highly involved and motivated workforce. How to Measure it? (Employee satisfaction, attendance, retention rate, OHSAS, No. of suggestions made {Japanese- Transparency: suggestion box}) • Increased Profitability: Market share can be increased through improved quality/ value which in turn increases Profitability. Also measured by sales per sales person, sales made by each shop, return on assets etc. • Improves operational performance: Quality and the costs by mapping reliability, quality costs, adherence to delivery schedules, defects and defectives, Inventory turnover etc.
  • 32. Obstacles to TQM 1 • Lack of Top Management Commitment 2 • Should be Taken seriously by everyone. 3 • Removal of functional silos 4 • Lack of structure for TQM activities. 5 • Difficulty in implementation (Clear Understanding) 6 • Awards E.g. ISO 9000 should be a start point for quality
  • 33. Quality Tools 5 S KANBAN KAIZEN LEAN FISHBONE DIAGRAM QUALITY CIRCLE
  • 34. Lean Philosophy Value=Utility/Cost Eg. Smart phone for youth and basic phone for adults. Lean Management= Identify the wastes (Muda) and eliminate in order to map value added activities involved in the process.
  • 37. Operations Process • Process is the mechanism behind transforming inputs into output. • A Process is an arrangement of resources that produces some mixture of goods and services. • Operation=Process 1+Process2 +…+Process N • Each Process is an internal supplier and internal customer for other processes. • Satisfying Internal customer will lead to satisfying ultimate consumer.
  • 39. Operations Process: Inputs Planning Involves forecasting, identification, alternatives, selection . Etc. (Itself is a Process has I/P- Forecasting models, decision tree, operations research models) Technology Involves attainment, up gradation, adaptation, improvement of technology. (R & D , Tech Ma Dept. uses inputs such as technology forecasting, PLC etc.) Time Very critical while making business promise, E.g. Same day delivery. (Processing time, lead time, waiting time, Schedule of delivery Etc.)
  • 40. Transformation Process It is the conversion process that converts inputs into output. Management should make these as per the The factors processes efficient and effective requirement to maximize profits. influencing processors are: • Location: At which conversion processes are carried out. Eg. Plant, here plant location, layout, buildings, plant facilities etc. factors affects the conversion process. • MHS: Selection, Capacity, layout, accounting and replacement.
  • 41. Transformation Process • Product-Mix: The primary concern of the processors is the product-mix. Decisions on product mix are influenced by market potential , capacity, competition. Managers uses various tools to determine optimum product mix. E.g. Operations research tools. • Cost related to labor, inventory, production: To calculate labor cost method study, work study techniques are used, production costs are associated with production cost & overheads. Inventory cost are highest contributor to product cost (60% +) hence tight control is essential.
  • 42. Outputs • It is the end result in terms finished goods or consumable services for immediate customers and then it processed into final finished form. E.g. concept of internal customer in hotels. • Some factors influence output are: Price Delivery Quality Profitability
  • 43. Transformation Process for Manufacturer Inputs Material, equipments, labor, technology Transformation Process Quality of inputs monitored Random Disturbances: Strikes, riots, power failure, environment. Quality of outputs monitored Outputs Machines, chemicals, consumer goods, scrap Feedback Mechanism: Customer satisfaction survey, Increase in demand, customer complaints
  • 44. Volume Variety Flow Volume: • Volume refers to the average quantity of products produced in the manufacturing system. • Low volume: Buildings, Film production agency. • Medium Volume: Automobile, Auto component • High Volume: Pharma, FMCG etc.
  • 45. Volume Variety Flow Variety: • No. of alternatives and variants of each product that are produced in a manufacturing systems. Variants of Samsung grand, neo etc. similarly for services hotels improves variety of offerings with respect to increasing popularity. • Variety in various process in the system. • Planning and scheduling complex on account of can become more these choices in the operating system.
  • 46. Volume Variety Flow Flow: • Flow phenomenon of transformation process, indicates the nature and intensity of and provides an understanding of how materials gets converted into finished goods stage. • Understanding flow of process provides clues for production planning and control involved in complex operation processes. • E.g. Flow involved in operations of making the tea, flow involved in Supply Chain of Thyrocare.
  • 47. Volume Variety Flow Volume-Variety Relationship: • Volume high, fewer varieties of products. • Wide variety of flow and services, volume is low. • Volume and variety affects flow patterns in a manufacturing system, process design choices available to an operations manager by studying flow patterns and choosing the optimum pattern.
  • 48. Types of processes and operations system Continuous Flow System • Assembly lines • Mass Production • Continuous Flow – Synthetic Production – Analytic Production Intermittent flow system • Project • Batch Production • Job/Job shop production 3/31/2016 46 Video: https://www.youtube.com/watch?v=m62whN6CWBM
  • 49. Process Product Matrix Not Economical Not Flexible The Product-Process Matrix was first introduced by Robert Hayes and Steven Wheelwright in the Harvard Business Review in 1979.
  • 50. Operations Vs. Supply Chain Discussion on LinkedIn forum: https://www.linkedin.com/groups/Is-Supply- Chain-part-Operations- 2060573.S.5954449886039597060?view=&ite m=5954449886039597060&type=member&gi d=2060573&trk=eml-b2_anet_digest-hero-1- hero-disc-disc- 0&midToken=AQFNcGJJp4Qm1w&fromEmail= fromEmail&ut=1v0qUDP5l4gCA1 SCM is more wider than operations Management
  • 51. Facility Location • The goal is to choose a location that minimizes costs while increasing operational efficiencies and product quality. • To accomplish this goal, management must consider such regional costs as land, construction, labor, local taxes, energy, and local living standards. • In addition, management must consider whether the local labor pool has the skills that the firm needs.
  • 52. Objectives of Facility Layout • A facility layout problem may have many objectives. In the context of manufacturing plants, minimizing Material handling costs is the most common one. • Includes efficient utilization of labor and space. (Per sq. ft area of plant) • Eliminate waste or redundant movement and bottlenecks.(Weakest element in the link, Eg. Chain, CPM-PERT in projects)
  • 53. • Facilitate: Organization structure (According to trade), communication and interaction between workers, manufacturing process and visual control( Andon signals, visual factory) • Provide: convenience, safety and comfort of the employees, flexibility to adapt to changing conditions( Change in technology) • Minimize: Manufacturing cycle time or customer flow time, accidents, investment (Unidirectional flow and lesser cross trafficking and linkages) Objectives of Facility Layout
  • 54. Importance of Facility Layout • Economical MHS: Material handling is major contributor for higher manufacturing costs. Minimization of long distance movements best handling principle is no handling. • Improved quality control: Specific quality control and inspection check required for particular operations. E.g. operation specific for drilling operation quality check in terms of measuring the bore size. • Better Supervision: Better/ full view of the plant and better control over manpower handling.
  • 55. Importance of Facility Layout • Effective use of floor area: every sq. cm area is to be utilized in such a manner which will maximize labor utilization (calculation of every single minute spent Work/Method study techniques) by multiple operations handled by them at a time. • Minimum equipment investment: Planned machine balance and loading and location ( in order to minimize the MHS).
  • 56. Factors Affecting facility layout changes Layout Changes Management Policy Manufacturing process Nature of product Volume of Production Type of equipment and infrastructure Arrangement of MHS
  • 57. Basic types of Layouts A. Process Layout A. Used in a job shop for a low volume, customized products B. Product Layout A. Used in a flow shop for a high volume, standard products
  • 60. Basic Types of Layouts C. Fixed Position Layout C. Used in projects for large products e.g., airplanes, ships and rockets D. Cellular layouts C. A cell contains a group of machines dedicated for a group of similar parts D. Suitable for producing a wide variety parts in moderate volume Hybrid or Combined Layout: Combination of layouts.
  • 63. 61 Factors T y p e of Layout F i x e d Position P r o d u c t (Line) Cellular ( G T ) P r o c e s s (Functional) 1. T yp e of O p e r a t io n S h i p building, L a r g e scale project, Construction or Industrial project C o n t in u o u s a n d repetitive S m a l l to m e d i u m b a t c h J o b or s m a ll b a t c h 2. A r r a n g e m e n t of facilities Facilities m o v e s to a f ix e d product/ project P l a c e d a lo n g the line of product f lo w S im ila r parts a r e g r o u p e d in part- f am ily. F o r e a c h part-f am ily o n e m a c h i n e cells is f o r m e d wh ic h contains all facilities n e e d e d b y corresponding part- f am ily. G r o u p e d b y specialty 3. C o s t of layout M o d e r a t e to l o w M o d e r a t e to h ig h M o d e r a t e to h ig h M o d e r a t e to l o w 4. Material handling M o d e r a t e L e s s L e s s H i g h 5. Material travel Variable p a t h F i x e d p a t h F i x e d p a t h Variable p a t h 6. Utilization of facilities M o d e r a t e V e r y h ig h H i g h L o w 7. O p e r a t in g facilities G e n e r a l p u r p o s e Special p u r p o s e Special p u r p o s e G e n e r a l p u r p o s e 8. E m p l o ye e skill Unskilled/skilled Unsk illed Multi-skilled a s o n e operator m a y h a n d le m o r e t h a n o n e operation Sk illed 9. ( Q / P ) ratio : Q is production Quantit y P is n u m b e r of products or variety N o r m a l l y I a s single product production L a r g e ( Q / P ) M o d e r a t e ( Q / P ) S m a l l ( Q / P ) 3/3h1t/t2p0:/1/6www.transtutors.com/homework-help/industrial-management/plant-layout/comparison-of-plant- layouts.aspx
  • 64. Activity Relationship Chart: Beyond the syllabus • An activity relationship chart is a graphical tool used to represent importance of locating pairs of operations near each other. • Importance is described using letter codes defined below: A - absolutely necessary E- especially important I- important O - ordinarily important U - unimportant X- undesirable
  • 65. Production area Office rooms Storage Dock area Locker room Tool room A A A O O U O O U U U U E X I Activity Relationship Chart Example: It’s ordinarily important to locate office rooms near loading/unloading area
  • 66. Services System Design • Designing Service system is a creative process. It is the way in service concept and service package are provided to the consumer. E.g. Thyrocare pathology labs or visit to the BBQ. (Attempt to give special / standardized Experience to the customer) • The service delivery system is dictated by and defined by the service concept includes core service (food), supporting good and services (ambience), facilitating goods and services 3/31 e /20 x 16 perience (billing), role of staff (waiter), consumer 64
  • 67. Service System Design • Two dimensions that affects the design of an appropriate delivery system are as follows: 1. Characteristic of the Market: Technical comprises in Dimension: What exactly services (specification by thyrocare labs related to blood sample) Business Dimension: How operations decide to provide a service (No. of vehicles to handle the cargo)+ criteria to get considered by customers (Cost and Service levels)related 3 PL services provided. 3/31t /2o 016 65
  • 68. Service System Design • Two dimensions that affects the design of an appropriate delivery system are as follows: 2. Service Complexity: The complexity of a service itself will directly impacts the number of steps to complete it. Some services are simple in nature e.g. Experience of eating food in canteen and some are very complex processes. E.g. Experience of eating food in Five star hotel. 3/31/2016 66
  • 69. Service System Design Matrix 67 Low High Labor Intensity Low High Professional Service Service Shop Mass Service Doctor, FinancialAnalyst Customization College, Hospitals Service Factory Banking Trucking Designing service system is function of Location, facility design and layout, Quality, equipment selection, service capacity etc. one of the major factor is Frequency of the contact. 3/31/2016
  • 70. Factors involved in Service System Design Service System Design Technology/ People Mix Complexity of Services Categories of Services Volumes Order winningvs. Order qualifying Nature of the services delivered
  • 71. Design of Services System Two types of design: A. OverallDesign  The Market: External factors that affects services. Eg. Toy Library in emerging zone.  The Services Encounter (Where and what is delivered - setting expectations) and Experience(The reality)  Retention. (Repetitively providing same experience without fail)
  • 72. Design of Services System Two types of design: B. Detailed Design: Two principal phases are 1. Back office or front office: Canteen 2. The delivery system
  • 73. Elements of Services System Design • Facility layout and locations • Servicescape • Service process and Design • Technology and IT support • Organizational Support Stages in services delivery design?
  • 74. Tools for Designing Service System • Services Blueprinting: Designing Services That Deliver written by G. Lynn Shostack in Jan 1984 issue. • The blueprint is most useful to managers developing new services, others can apply the same principles to test the quality of services for which they contract/ existing. • The issues Identifying involved processes are B. Isolating the points C. Establishing the time frame disused as A. fail D .Analyzing the Profitability
  • 75. Service Blueprinting Line of Interaction Line of Visibility Front Office Back Office Service Blueprint
  • 76. Service Blueprint for Shoeshine services 3/31/2016 73 Source: https://hbr.org/1984/01/designing-services-that-deliver/ar/1
  • 77. Profitability Analysis for given example
  • 78. Tools for Designing Service System • QFD: Quality Function Deployment is, a focused methodology for carefully listening to the voice of the customer and then effectively responding to those needs and expectations. It has four phases namely Product Planning, Part Development, Process Planning, Production Planning. • The house of quality is a kind of conceptual map that provides the means for inter-functional planning and communications. • People with different problems and responsibilities can thrash out design priorities while referring to patterns of evidence on the house’s grid.
  • 79. House Of Quality Technical Descriptors (Voice of the organization) Prioritized Technical Descriptors Interrelationship between Technical Descriptors Customer Requirement s (Voice of the Customer) Prioritized Customer Requirements Relationship between Requirements and Descriptors QFD is converting the customers requirement into technical specification
  • 80. Tools for Designing Service System • Servicescape: Concept developed by Booms and Bitner to emphasize the impact of the physical environment in which service process takes place. It includes facilities exterior and interior environment. E.g. Eating the food in McDonalds and local burger shop. Framework follows SOR Theory: 1.Stimulus=Physical Evidence 2. Organisms=Customers and employee’s response to stimuli 3.Response= depending on Changed/ unchanged customer and employees behavior internal reactions to physical evidence. 3/31/2016 Same as landscape development 77
  • 81. Tools for Designing Service System • Waiting line analysis: Customer enters into the system wait in for queue for next available server as per queue discipline customer is selected for service and customer leaves the system. System should be such that discourage customers should be minimized. E.g. Waiting in restaurants 3/31/2016 78 Source: http://www.ini740.com/F14/lectures/class_8.html
  • 82. Unit Production Planning & Control (PPC)
  • 83.
  • 84. Why do we Forecast? • Dynamic control and Complex Environments: No over market forces and product • Short term fluctuations in production: To avoid knee-jerk effect. E.g. Strikes of demand. E.g. FMCG products. transports • Better Materials Management: Inventory optimization can be achieved. E.g. Restaurant 3/31/s 20t 16 ocking of grains. purchasing manager will use forecast for 82
  • 85. Why do we Forecast? • Rationalized manpower decisions: Resource allocation can be improved with the use of forecasting tools. E.g. Event Management • Basis for planning and scheduling: Planning and scheduling on rational basis. E.g. Purchasing decisions for seasonal business. • Strategic Decisions: Unfolding future is a key factor in decision making. E.g. Purchasing of oil barrels on long term contract.
  • 86. Crude oil Prices March 2013- February 2015-March 2020?
  • 87. Price Fluctuations Appreciation and depreciation of USD-INR 3/31/201 6 85 Date Open High Low Change % 1-Feb-15 62.02 62.58 61.56 0.27% 1-Jan-15 63.17 63.63 61.26 -1.61% 1-Dec-14 62.05 63.89 61.76 1.33% 1-Nov-14 61.5 62.25 61.29 1.31% 1-Oct-14 61.82 61.97 60.9 -0.86% 1-Sep-14 60.51 61.94 60.2 2.35% 1-Aug-14 60.74 61.76 60.35 -0.06% 1-Jul-14 60.07 60.56 59.53 0.82% 1-Jun-14 59.1 60.53 58.97 1.46% 1-May-14 60.26 60.27 58.25 -1.91% 1-Apr-14 59.93 61.19 59.57 0.55% 1-Mar-14 61.95 62.14 59.68 -2.88% 1-Feb-14 62.7 62.83 61.75 -1.42% 1-Jan-14 61.82 63.32 61.32 1.42% 1-Dec-13 62.35 62.53 60.83 -0.94% 1-Nov-13 61.5 63.9 61.5 1.26% 1-Oct-13 62.55 62.56 60.93 -1.54% 1-Sep-13 66.1 68.6 61.65 -4.74% 1-Aug-13 60.75 68.8 60.23 7.97% 1-Jul-13 59.46 61.21 58.69 2.22% 1-Jun-13 56.5 60.76 56.3 5.22% 1-May-13 53.8 56.76 53.63 5.39% 1-Apr-13 54.26 54.94 53.65 -1.11% 1-Mar-13 54.36 55.13 53.89 0.00%
  • 88. Forecasting Time Horizon 3/31/2016 86 Source: Operations Management: Theory and Practice,B.Mahadevan , Page Number 398
  • 89. Forecasting as a planning tool • Every organization engages in annual planning exercise wherein HoD’s of departments (Marketing, various Finance, Production, Materials etc.) share the data as an input. • Managerial decision making is often complicated due to an element of uncertainty in the variables affecting the decision making process. E.g. Whenever the restaurant opens start offering new cuisine the demand for its 3/31/ p 201 r 6 oduct is not known with certainty. 87
  • 90. Forecasting as a planning tool • Forecasts are estimates of the timing and magnitude of the occurrence of future event. • Since these decisions involves cash flow and time, accurate estimates of the future events for which decision has been made is crucial. • Forecasting is the branch of (OM) operations management that addresses these issues and provides the manager with a set of tools and techninuques for Estimation process.
  • 91. Functions of Forecasting An Estimation Tool. A way of addressing complex and uncertain environment surrounding business decision making. A tool for predicting events related to operations planning and control. A vital pre-requisite for planning process in organization.
  • 92. Design of Forecasting Systems Develop the forecasting logic by identifying the purpose, data and models to be used. Establish control mechanisms to obtain reliable forecasts Incorporate managerial consideration in using the forecasting system.
  • 93. Formulas to Calculate Forecast errors Forecast errors=114-118=-4 SFE=11-4=7 Absolute Deviation= I-4I =4 Cumulative Absolute deviation=11+4=15 MAD=15/2=7.5 Absolute Error= Actual-Forecast/ Actual =114-118/114=3.5% MAPE=(9.17%+3.5%)/2= 6.35% Squared Error= 4 X 4 =16 MSE =(121+16)/2 = 68.5 TS= SFE/MAD =7/7.5=0.93
  • 94. Accuracy of Forecasts Forecasting model predicted the demand as 2500 units. Case I: Actual demand 3500 Units- Severe Shortages , Last minute rescheduling of production, rush purchasing and expediting deliveries. Case II: Actual demand 1000 Units- Excessive build up of raw materials and non-moving inventory.
  • 95. Accuracy of Forecasts Forecast Error (FE): Forecast error for period t έi = Dt-Ft ( Period 1: 100-50, Period 2: 100-145) Positive value of έi will indicate underestimation of demand and vice versa. Sum of errors: Sum of errors during the period of consideration. Even when system is not performing well SFE value will be near to 0. SFE= Σ έi (limits for i is from 1 to n)
  • 96. Accuracy of Forecasts Mean Absolute Deviation: (MAD) Take the absolute value of έt and average it over the n periods to get alternate and better picture of the forecast. Mean Absolute % error : (MAPE) Each absolute error term could be expressed as a percentage of the demand and new measure computed.
  • 97. Accuracy of Forecasts Mean squared error: (MSE) This measure is obtained by taking mean of the squares of the error terms. Tracking Signal :(TS) It is the ratio of SFE and MAD. No numerical is expected on the topic of forecasting. Refer to Excel Link
  • 98. Planning Hierarchies in Operations Source: Operations Management: Theory and Practice, B.Mahadevan , Page Number 430
  • 99. Sources of Data • Forecasting is often only as good as the quality and quantity of data available. • Extrapolative methods of forecasting make use of past data to prepare future estimates. Eg. Analyzing the demand pattern. • Causal methods of forecasting analyze the data from the view point of cause and effect relationship. E.g. increase in repo rate and effect on stock prices.
  • 100. Sources of Data Sources of data for forecasting are: • Sales Force Estimates: Field executives will give input on actual/ factual demand. • Point of sales (POS) data: ITES and bar-coding enables organizations e.g. Wal-Mart, Big Bazaar to capture real time data. • Forecast from supply chain partners: Supply chain partners provide critical info on market 3/31/ s 20 e 16 ntiments and projections etc. trends, competitors performance, market 98
  • 101. Sources of Data Sources of data for forecasting are: • Trade Industry association/ journals: The journals provides syndicated and researched data on industry trends and forecasts. http://www.asa.in/pdfs/surveys-reports/auto- and-auto-ancillaries-sector-in-india.pdf • B2B Portals / Market places: Digital versions of Trade Industry association publications/ journals. http://indiaautoreport.com/category/forecast -update/ 3/31/2016 99
  • 102. 102 Sources of Data Sources of data for forecasting are: • Economic Surveys and Indicators: E.g. Mobile data traffic can research based be forecasted with on TRAI and joint Cisco http://www.cisco.com/assets/sol/sp/vni/forec ast_highlights_mobile/index.html • Subjective Knowledge: Experience and knowledge of senior management should be used as insights for planning
  • 103. 103 Capacity Planning (No numerical is expected) • Demand=250 • Hours/ unit of production= 100 • Demand (hours)=250 X100 =25000 • No. of Working days=23 • No. of Workers =125 • Capacity Available= 125 X 23 x 8 =23000 • Supply –Demand=23000-25000=I -2000 I • Calculate for Q= 350, Q=100.
  • 104. 104 Aggregate Production Planning Aggregate Production Planning (APP) decisions deals with the amount of resources to be committed, the rate at which goods and services need to be produced during the period, the inventory to be carried forward form one period to the next. APP exercise is done in an organizations to match the demand with the supply on a period by period basis in a cost effective manner
  • 105. 105 The Need for Aggregate Production Planning • Demand Fluctuations • Capacity Fluctuations • Difficulty level in altering production rates • Benefits of multi period Planning Resources Production Inventory Aggregate June to September 100 Operators one shift only 100 Engines/Days Carry 5% Manpower? October to January 100 Operators two shifts 150 Engines/ Day Carry 10% Inventory? February to May 100 Three Shifts 240 Engines/ Day Carry 20% Production?
  • 106. Framework for APP Exercise Alternatives to managing demand: Reservation of capacity, Influence Demand 106
  • 107. 107 Alternatives for Managing supply • Inventory based alternatives:  Build Inventory  Back log / Shortage • Capacity adjustments:  Hiring/ Lay off of workers  Varying shifts  Varying Working Hours • Capacity augmentation:  Subcontract/ Outsource  De-bottleneck  Add new capacity
  • 108. Basic strategies for APP Exercise Beyond the syllabus Do not disturb existing production system Mismatch is addressed by variety of capacity related alternatives 108
  • 109. Master Production Schedule Master Production Schedule (MPS) is the process by which disaggregation of varieties is done. At APP level forecast demand is normally taken for the purpose of estimating the capacity required however actual orders when received gives better visibility for planning. MPS uses actual and most recent information while revisiting the planning problem and sures specific resources available. 3/31/e 201 n 6 107
  • 110. 110 Master Production Schedule As customers get amended and/or cancelled, marketing dept. is interested to know scope for accepting new enquiries and delivery commitment. MPS module serves the important purpose of computing capacity available to promise. MPS determines what needs to be ultimately produced and not what is demanded.
  • 111. 111 Master Production Schedule First Stage: Update the projected demand based on earlier forecast and current market information. Second Stage: Disaggregation of product information and relating it to specific material and capacity requirements. Based on this, plans are re-worked in iterations and executable/ viable plan is prepared.
  • 112. Product Structure Level 0 Level 1 Level 2 Level 3 110 Can you discuss levels of Car, Mobile as a product? Levels of product Bill of Materials
  • 114. Dependant Demand • The Product structure depicts the dependency relationships among various items that make up the final product. E.g. Demand for pens is independent demand while demand for refills required for a pen is dependant demand. • Due to causal relationship with other items in the system demand estimation can be done through simple planning methodologies. Due to uncertainty independent demand items can not be made available to 100% service 3/31/ l 20 e 16 vel. 112
  • 115. 115 MRP • Material requirement planning is a structured approach launching that develops orders for materials manufacturing system and ensures schedules for in any the availability of these at right time and at the right place.
  • 116. 116 CRP • Capacity requirement planning is a technique that applies the MRP logic to address the capacity issues in an organization. ( Refer slide of capacity planning) • Inputs for this are capacity status, process plans, planned orders released by MRP. • Outcome of this activity is loading schedule for each resource.
  • 117. 117 DRP • DRP exercise will help organizations and their supply chain partners to jointly plan and reduce investment in the supply chain, they will be in position to respond to changes in the demand (surges and drops) and have a cost effective operations.
  • 118. 118 MRP II • MRP II (1980) is extended version of MRP and consists of different modules related to different business functions. Refer the topic evolution of SCM
  • 121. 121 Scheduling and Loading Job Shops and Scheduling of Flow Shops Johnson’s Rule Gantt Charts Self Study Topics: Refer B. Mahadevan, Operations Management, Page no. 510 -525
  • 123. 123 What is Inventory • Any idle resource that can be put to some future use. (Lower or Higher???) • Inventory is nothing but stock of fixed and consumable items required for operations, aggregate of these items which are either held for sale or yet to be consumed in production process. • Inventory looked by Management- Marketing: High, Finance::Low, Production: Enough Stores::Low (Why?)
  • 124. 124 High or Low Inventory? Encouraging Factors • Minimize Backorders • Demand Fluctuations • Economies of Scale • Discounts • Purchase Costs • Transportation • Material Handling • Economies of Scope Discouraging Factors • Seasonal Goods • Fluctuations • Carrying Costs • Shorter PLC • Obsolescence • Theft • Storage Space
  • 125. 125 Inventory Planning Continuous Demand • Independent demand items are continuous demand items. Eg. Bike, Pen • Continuous demand for an item will require constant availability of items and • periodic replenishments Non availability will lead to backorders goodwill, , loss of extra cost for delivery commitments • In Intermittent Demand case of dependant demand items the demand is always derived. Eg. No. of engines required pr month. • Definite demand for spare parts is to determined on some basis. Eg. Tail lamp. • Hence planning independent demand for items should include some cushion for handling uncertainty
  • 126. Why to Control Inventory ROI= Profit Fixed Assets+ Current Assets (CA)  CA :Materials+ Bills Receivable+ Cash in hand Materials cost is are almost 60-70% of total cost, hence Inventory is called as a gold mine 3/31f /2 o 016 r savings 124
  • 127. 127 Types of Inventory • Raw Materials • Semi-Finished Goods • Work in Process • Finished Goods • Tools • Consumable • Machinery Spares
  • 128. 128 Types of Inventory 5 Basic types of inventory are: 1. Cyclic Inventory: Cyclic inventory goes through a saw toothed pattern each cycle begins with replenishment and ends with complete depletion of the inventory. 2. Decoupling Inventory: Based on workstation capabilities , resource availability and bottlenecks; buffer inventory is created at every process to enable decentralized planning and control of operations.
  • 129. 129 Types of Inventory 5 Basic types of inventory are: 3.Seasonal Inventory: Organizations carry inventory to meet fluctuations in demand. 4.Pipeline Inventory: Inventory carried because of non-zero lead time for order, transport and receipt of material from suppliers. 5.Safety Stock: carrying average inventory will take care of demand 50% of the time (Stochastic demand- Probability Distribution)
  • 130. Inventory Costs Inventory Carrying Cost: • All the cost element involved in storage and warehousing activities. • Eg. Cost of warehousing, Salary of the stores. • It is denoted as Cc and has linear graphically it relationship with level of inventory held. = Cc Q/2 Cost of ordering: • Many of the ordering costs are fixed in nature hence larger order quantity require fewer orders. • Eg. Cost supplier search till generation, Travel associated with PO to supplier and communicate, Salaries of Purchase officer. • It is denoted as Co =CO (D/Q) 3/31/2016 128
  • 131. 120 Inventory Costs • Setup Cost: Whenever the component is produced in house. The time taken in setting up the machine, consumables and tools used for this purpose are major elements of the setup cost. Denoted by Co (Similar as ordering cost concept of internal supplier) • Cost of Shortage: Because of sudden surge in demand, Lot is rejected delivery schedules not met by the customers, shortage arises. Similar as opportunity costs. Denoted by Cs
  • 132. 130 EOQ Model • There are two costs involved when an item is procured and stored. I. Ordering Cost: Procuring activity controlled by no. of orders/year/item. II. Carrying costs: Storage activity cost proportionate to quantity received. • It can be seen that these two costs oppose each other. It is essential to find out quantity which balances these two costs such quantity is called as EOQ.
  • 134. 134 Assumptions in Basic EOQ model • The demand is known with certainty and is continuous over time. • There is an instantaneous replenishment of items. • The items are sourced from external suppliers. • There are no restriction on quantity ordered. • There are no preferred item quantities for the items • No price discounts is offered when order size is large.
  • 135. 135 Following notations are used • Q = Quantity ordered each time • Q* = Optimum quantity of inventory ordered for minimum total cost= EOQ • D = Annual demand of parts (in unit) • C/Cu = Cost of inventory per unit item • CC = Carrying cost per unit of individual item, expressed as a percentage of unit cost • CO = Ordering, set-up or procurement cost per order • TC = Total annual costs
  • 136. 136 Formula for EOQ • Carrying Cost =(Q/2) X Cc Average inventory carried during the year = Q + O/2 = Q/2 •Ordering Cost= (D X Co)/ Q No. of orders per year = D/Q In ideal case Co=Cc D X Co = Q X Cc Q 2
  • 137. Formula for EOQ  For total cost minimization; DCO ( - 1/q2) + cc/2 = 0 cc/2 DCo/q2  Or,  Or,  Or, Q = √2DCo/cc  d2/dq2 (TC) = COD ( - -2/qs ) =2CoD/q3 (a positive quantity)  For total inventory cost minimization, we have defined Q as Q* and we will call it as economic order quantity  EOQ= Q* = √2DCo/cc TC= D X Co + Q X Cc + D X Cu………. (Cu= Per unit Cost) Q 2 3/31/2016 135
  • 138. 138 Example Q. 1 A grocery store sells 10 cases of Green Tea each week. Each case costs Rs.80. The cost of ordering is Rs.10 per order. Holding or carrying cost is estimated to be 30% of the inventory value per year. I. How often is the Green Tea ordered? II. Calculate the EOQ
  • 139. 139 Solution D = 520 (Cases/Year)…… (10 cases/week * 52 weeks/year) Co= Rs 10 (per order) Cc= 30% (or 0.30) of Cu (per unit/annum)= .30 X 80=24 Cu = Rs 80 percase EOQ=√2 Co D/Cc=√2*10*520/24 = 20.8= 21cases per order (How Much Decision) How often is the coffee ordered? (When Decision) 520/21 » 25 orders per year. Or every 15 days ( 365/25 =15 )
  • 140. 140 Example Annual Demand for the item (D)=2500 Boxes No. of Working Days=250 Average Daily Demand=2500/250 = 10 Boxes Unit Cost of the item= Rs. 750 Inventory Carrying Cost Cc=18% per unit/ annum Cc= .18 X 750 = 135 per unit per year Ordering Cost Co= Rs. 1080 per order
  • 141. 141 Solution • The How Much decision Q* = √2DCo/Cc =√2 X 1080 X2500 / 135 =200 Boxes No. of orders placed = D/ Q = 2500 /200 = 12.5 = Aprox. 13 • The When Decision Time between orders= Q/D = 200/2500 = 0.08 => 0.08 X 250 = 20 Days
  • 142. 140 Solution Total Cost of the Plan TC= D X Co + Q X Cc + D X Cu Q 2 =2500 X 1080 / 200 + 200/2 X 135 + 2500 X 750 = 13500+ 13500 + 1875000 =Rs. 1902000
  • 143. 143 EOQ with Quantity Discounts • Annual Demand = 5000 units • Ordering cost = $49 • Annual carrying charge = 20% • Unit price schedule: Quantity Unit Price 0 to 999 $5.00 1000 to 1999 $4.80 2000 and over $4.75
  • 146. 146 Inventory Control System The Continuous Review System (Q System): Also called as two-bin system. As the material getting consumed the larger bin is emptied first as soon as larger bin is empty, order is placed with the supplier for predetermined quantity. During lead time material from smaller bin (equal to reorder point) is consumed and during replenishment smaller bin is filled first.
  • 147. Inventory Control System The Periodic Review System (P System): • After every specific time interval inventory is reviewed and replenished up to certain level. • The P-system does not have an economic order quantity since it varies according to demand. • The P-system requires a larger safety stock for the same service level because protection from shortage for longer period of time. • The P system is responsive to demand and enables ordering multiple items from the same 3/s 31u /20p 16 plier at the same time. 145
  • 148. Order up to level 148 (P System): (Q System):
  • 149. 149 Selective Control of Inventory • Selective control is essential because uniform control is A. Expensive B. Gives diffused results. • Selective control means variation in method of control from item to item based on selective basis. Two major categories other than ABC analysis: I. Procurement Basis: VED, SDE, SOS, GOLF II. Storage Basis: HML, FSN, XYZ
  • 150. 150
  • 153. Step I: Calculate Annual Consumption 153
  • 154. Step II: Descending value+ Cumulative Value + Define Classes 154
  • 155. Step III: Summarize Close day to day control 155 Regular Review Infrequent Review
  • 156. Step IV : Draw Pareto Chart •The boundary between class A and class B and Similarly Class B and Class C might not be as sharply defined. •The purpose of ABC classification is to ensure that purchasing dept. use resources to maximum efficiency by concentrating on those items that have the greatest potential savings. •Ideal ratio is 70% consumption value by 5-10% of items are called as A class items. Practically it varies based on inventory policy of an organization. 156
  • 159. 3/31/2016 157 Integrated Supply Chain Management Integrated supply chain Framework: Integration of value creation processes Page no.6 SCLM, Tata McGraw Hill, Bowersox and Closs
  • 161. 161 Four forces of that drives SCM Integrative Management 1. Collaboration: Sharing of operating information, technology and risks as ways to increase competitiveness. Collaborative Competitiveness 2. Enterprise Extension: Information Sharing paradigm and process specialization paradigm 3.Integrated Services Providers: 3PL(Assets are owned) and 4 PL (Non asset based) 3PL means third party logistics= Transportation+ Warehousing
  • 162. 160 Four forces of that drives SCM Responsiveness 1. Push (Anticipatory) Business Model 2. Pull (Responsive) Business Model Forecast Buy Material Manufacture Warehouse Sell Deliver Sell Buy Material Manufacture Deliver
  • 163. 163 Four forces of that drives SCM Responsiveness 3. Postponement: It is a business strategy that maximizes possible benefits and minimizes risks by delaying further investment into the product. Form postponement – Eg. Fitting accessories to the car. Logistics postponement- Eg. packaging of sugar at the supermall that differentiates the product.
  • 164. 164 Four forces of that drives SCM Globalization: With the emergence of global  Businesses complexity,  Uncertainty,  Risks improved drastically.
  • 165. Four forces of that drives SCM Financial Sophistication 1. Cash to Cash Conversion (CCC) CCC= Days Outstanding of following factors (Inventory + Sales-Payable) Cash in purchasing inventory to Cash received upon selling the inventory. 2. Dwell Time Minimization: If assets are sitting idle instead adding value to SCM processes. 3. Free Cash Spin: Minimize the cash committed to 3/31/201 t6 he SCM performance. Eg. Inventory 163
  • 166. Cash to Cash Conversion Cycle
  • 167. Cycle View of Supply Chains Integration 167
  • 168. Key Issues in SCM Key Issues in SCM Improving Flexibility Lead Time Reduction Minimizing Uncertainty 168 Focusingon A category Minimizing Variety
  • 169. Enablers of SCM Sourcing Transportation Facility Inventory Information Pricing 169
  • 170. 170 Customer Service 7 R’s of Customer Service: I. Product II. Price III. Place IV. Quantity V. Quality VI. Customer VII.Condition
  • 171. Customer Satisfaction Measuring quality in services set up is inherently complex and heterogeneous. Suggested by A. Parasuraman, V .A. Zeitthamal and L.L. Berry Called as PZB Model/ SERVQUAL model. Paper Title “ A Conceptual model of service quality and its implication for future research” Journal of Marketing: 1985 Dimensions of SERVQUAL are Reliability, A 3/s 31s /20 u 16rance, Tangibles, Empathy, Responsiveness 168
  • 172. PZB- GAP model How to reduce service gaps Gap 4: Brochures Pamphlets Gap 1: Frequent Feedback Gap 3: Training Programs
  • 173. Gap Number Description Feature 1 Feature 2 Feature 3 Example 1 Service firm What are the What features What levels of Hot and Spicy executive may not Consumer a services performance Food understand wants must have should be delivered 2 Means to meet the Knowledge of Means are Management Decoration, expectation are consumer known but commitment Pots absent expectation they are is lacking exists but not expensive the perceived means to deliver 3 Variability in SOP and Lack of skills Behavioral Mood, employees Policies are training and attitude Perception, performance absent difference. Health 4 There are problems More Firm tend to Poor quality arising out of promises that neglect back of Oil, Dal, communication are not office quality Potato etc. delivered 5 3/31/201 6 Is a function of four gaps. 170
  • 174. Review of Core Concepts of OSCM
  • 179. Production Planning and Control https://youtu.be/Fxow6-LeQc8
  • 183. Generalised Supply Chain Model https://youtu.be/vp196wKKdpA
  • 184. Suggested Text Books 1. Operations Management Theory & Practice, B.Mahadevan , Pearson. 2. Operations Now - Supply Chain Profitability & Performance, Byron J. Finch, McGraw Hill. 3. Production and Operations Management, R B Khanna, PHI, New Delhi. 4. Production & Operations Management, S N Chary, McGraw Hill. 5. Supply Chain Management - Strategy, Planning & Operation,Sunil Chopra, Peter Meindl, D. V. Kalra, Pearson Education.
  • 185. Suggested Reference Books 1. Supply Chain Logistics Management, Donald Bowersox, David Closs, M Bixby Cooper, Tata McGraw Hill. 2. Operations Management, William J. Stevenson, TMGH. 3. Operations Management, Lee Krajewski, Larry Ritzman, Manoj Malhotra, Pearson Education. 4. Introduction to Materials Management , J.R. Tony Arnold, Stephen Chapman, Ramakrishnan, Pearson.
  • 186. Audio Visual Link (Case/Best Practice) 1. Industrie 4.0 - The Fourth Industrial Revolution, Siemens, https://www.youtube.com/watch?v= HPRURtORnis 2. Markus Lorenz: Industry 4.0: how intelligent machines will transform everything we know, TED Institute, https://www.youtube.com/watch?v=uBZmJOHIN 8E 3. In Depth: Industrial Revolution 4.0, Rajya Sabha TV,https://www.youtube.com/watch?v=RO4GNVQMQnM 4. Future Manufacturing 4.0: Toyota innovation, robotics, AI, Big Data. Futurist keynote speaker, Futurist Keynote Speaker Patrick Dixon - FUTURE, https://www.youtube.com/watch?v=rt65167tZlQ
  • 187. Journal 1. Industry 4.0 Concept: Background and Overview - Online-Journals.org, online-journals.org/index.php/i- jim/article/view/7072 2. Industry 4.0 implies lean manufacturing - Journal of Industrial, www.jiem.org › Home › Vol 9, No 3 (2016) › Sanders 3. Special Issue on Industry 4.0 and Smart, Journals – Elsevier, https://www.journals.elsevier.com/.../special -issue-on-industry-40-and-smart-manufact 4. Industry 4.0 – JOURNALS of Scientific Technical Union of Mechanical, https://stumejournals.com/i4.htm
  • 188. Thank You and All the Best!