This document provides an overview of aggregate planning. It begins by listing the key learning objectives which are to define aggregate planning, identify strategies for developing an aggregate plan, prepare a graphical aggregate plan, solve an aggregate plan using linear programming, and understand yield management problems. It then defines aggregate planning and its goal of determining production quantities and timing to minimize costs over the planning period. Important aspects discussed include aggregate units, demand forecasting, relevant costs like holding and shortage costs, and strategies for adjusting capacity and managing demand. Quantitative techniques for aggregate planning including linear programming and transportation models are also introduced. Specific examples are provided to illustrate aggregate planning concepts and challenges for services are outlined.
This presentation is originally created by me when I reported Aggregate Planning during my Production and Operations Management class. I hope this can help you. :))
Aggregate planning is an operational activity that does an aggregate plan for the production process, in advance of 6 to 18 months, to give an idea to management as to what quantity of materials and other resources are to be procured and when, so that the total cost of operations of the organization is kept to the minimum over that period.
This presentation is originally created by me when I reported Aggregate Planning during my Production and Operations Management class. I hope this can help you. :))
Aggregate planning is an operational activity that does an aggregate plan for the production process, in advance of 6 to 18 months, to give an idea to management as to what quantity of materials and other resources are to be procured and when, so that the total cost of operations of the organization is kept to the minimum over that period.
A Strategic Approach: GenAI in EducationPeter Windle
Â
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Â
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
âĸ The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
âĸ The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate âany matterâ at âany timeâ under House Rule X.
âĸ The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Palestine last event orientationfvgnh .pptxRaedMohamed3
Â
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Â
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Hanâs Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insiderâs LMA Course, this piece examines the courseâs effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Â
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
Â
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesarâs dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empireâs birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empireâs society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Â
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Â
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2. Learning Objectives
ī§
1.
2.
3.
4.
5.
When you complete this chapter you
should be able to:
DeīŦne aggregate planning
Identify optional strategies for developing an aggregate
plan
Prepare a graphical aggregate plan
Solve an aggregate plan via the transportation method
of linear programming
Understand and solve a yield management problem
3. Aggregate Planning
ī§
īž
īž
īž
īž
īž
īž
īž
Determine the quantity and timing of production for the
immediate future
Objective is to minimize cost over the planning period
by adjusting
Production rates
Labor levels
Inventory levels
Overtime work
Subcontracting rates
Other controllable variables
4. ī§
īž
īž
īž
īž
Required for aggregate planning
A logical overall unit for measuring sales and
output
A forecast of demand for an intermediate
planning period in these aggregate terms
A method for determining costs
A model that combines forecasts and costs so
that scheduling decisions can be made for the
planning period
Aggregate Planning
6. The Planning Process
Long-range plans
(over one year)
Research and Development
New product plans
Capital investments
Facility location/expansion
Intermediate-range plans
(3 to 18 months)
Sales planning
Production planning and budgeting
Setting employment, inventory,
subcontracting levels
Analyzing operating plans
Short-range plans
(up to 3 months)
Job assignments
Ordering
Job scheduling
Dispatching
Overtime
Part-time help
Top
executives
Operations
managers
Operations
managers,
supervisors,
foremen
Responsibility Planning tasks and horizon
8. Aggregate Planning
īž
īž
īž
īž
Combines appropriate resources into
general terms
Part of a larger production planning
system
Disaggregation breaks the plan down into
greater detail
Disaggregation results in a master
production schedule
Aggregate Planning
9. Hierarchical Nature of Planning
Items
Product lines or
families
Individual
products
Components
Manufacturing
operations
Resource
Level
Plants
Individual
machines
Critical work
centers
Production
Planning
Capacity
Planning
Resource
requirements
plan
Rough-cut
capacity
plan
Capacity
requirements plan
Input/
output
control
Aggregate
production
plan
Master
production
schedule
Material
requirements
plan
Shop īŦoor
schedule
All work
centers
10. 1.
2.
3.
4.
5.
Use inventories to absorb changes in demand
Accommodate changes by varying workforce
size
Use part-timers, overtime, or idle time to absorb
changes
Use subcontractors and maintain a stable
workforce
Change prices or other factors to inīŦuence
demand
Aggregate Planning Strategies
11. Aggregate Planning Strategies
âĸ
âĸ
âĸ
âĸ
âĸ
Should inventories be used to absorb changes in
demand during planning period?
Should demand changes be accommodated by
varying the size of the workforce?
Should part-timers be used, or should overtime
and/or machine idle time be used to absorb
īŦuctuations?
Should subcontractors be used on īŦuctuating
orders so a stable workforce can be maintained?
Should prices or other factors be changed to
inīŦuence demand?
12. Capacity Options
īž
īž
īž
īž
Changing inventory levels
Increase inventory in low demand periods to
meet high demand in the future
Increases costs associated with storage,
insurance, handling, obsolescence, and
capital investment 15% to 40%
Shortages can mean lost sales due to long
lead times and poor customer service
13. īž
īž
īž
īž
īž
Varying workforce size by hiring or layoffs
Match production rate to demand
Training and separation costs for hiring and
laying off workers
New workers may have lower productivity
Laying off workers may lower morale and
productivity
Capacity Options
14. īž
īž
īž
īž
īž
Varying production rate through overtime
or idle time
Allows constant workforce
May be diīŦcult to meet large increases in
demand
Overtime can be costly and may drive down
productivity
Absorbing idle time may be diīŦcult
Capacity Options
15. īž
īž
īž
īž
īž
īž
īž
Subcontracting
Temporary measure during periods of peak
demand
May be costly
Assuring quality and timely delivery may be
diīŦcult
Exposes your customers to a possible competitor
Using part-time workers
Useful for īŦlling unskilled or low skilled positions,
especially in services
Capacity Options
17. īž
īž
īž
īž
īž
īž
īž
Back ordering during high- demand periods
Requires customers to wait for an order without
loss of goodwill or the order
Most effective when there are few if any
substitutes for the product or service
Often results in lost sales
Counterseasonal product and service mixing
Develop a product mix of counterseasonal items
May lead to products or services outside the
companyâs areas of expertise
Demand Options
18. âĸ Aggregate Planning Options
Aggregate Planning Options
Option Advantages Disadvantages Some Comments
Changing
inventory
levels
Changes in
human
resources are
gradual or none;
no abrupt
production
changes.
Inventory holding
cost may
increase.
Shortages may
result in lost
sales.
Applies mainly to
production, not
service,
operations.
Varying
workforce
size by
hiring or
layoffs
Avoids the costs
of other
alternatives.
Hiring, layoff, and
training costs
may be
signiīŦcant.
Used where size
of labor pool is
large.
19. Meeting Demand Strategies
īˇ
īŽ
īŽ
īˇ
īŽ
Adjusting capacity
Resources necessary to meet demand are acquired
and maintained over the time horizon of the plan
Minor variations in demand are handled with
overtime or under-time
Managing demand
Proactive demand management
20. Strategies for Adjusting Capacity
âĸ
â
âĸ
â
âĸ
â
Level production
Producing at a constant rate
and using inventory to absorb
īŦuctuations in demand
Chase demand
Hiring and īŦring workers to
match demand
Peak demand
Maintaining resources for
high-demand levels
âĸ
â
âĸ
â
âĸ
â
âĸ
â
Overtime and under-time
Increasing or decreasing
working hours
Subcontracting
Let outside companies
complete the work
Part-time workers
Hiring part time workers to
complete the work
Backordering
Providing the service or
product at a later time period
23. Strategies for Managing Demand
âĸ
â
â
â
âĸ
âĸ
Shifting demand into other
time periods
Incentives
Sales promotions
Advertising campaigns
Offering products or
services with counter-
cyclical demand patterns
Partnering with suppliers to
reduce information
distortion along the supply
chain
24. Quantitative Techniques For APP
âĸ
âĸ
âĸ
âĸ
âĸ
Pure Strategies
Mixed Strategies
Linear Programming
Transportation Method
Other Quantitative
Techniques
26. Introduction to Aggregate Planning
īŽ
īŽ
Goal: To plan gross work force levels
and set īŦrm-wide production plans
Concept is predicated on the idea of
an âaggregate unit â of production as
we will see later
27. Overview of the Aggregation
Problem
īŽ
īŽ
Suppose that D1, D2, . . . , DT are the
forecasts of demand for aggregate units
over the planning horizon (T periods.)
The problem is to determine both work
force levels (Wt) and production levels (Pt )
to minimize total costs over the T period
planning horizon.
28. Important Issues
īŽ
īŽ
īŽ
īŽ
Smoothing. Refers to the costs and disruptions that
result from making changes from one period to the
next
Bottleneck Planning . Problem of meeting peak
demand in the face of capacity restrictions
Planning Horizon . Assumed given (T), but what is
ârightâ value? Rolling horizons and end of horizon
effect are both important issues
Treatment of Demand . Assume demand is known.
Ignores uncertainty to focus on the predictable or
systematic variations in demand, such as seasonality
29. Relevant Costs
īŽ
īŽ
īŽ
īŽ
īŽ
īŽ
īŽ
īŽ
Smoothing Costs
changing size of the work force
changing number of units produced
Holding Costs
primary component: opportunity cost of investment
$âs tied up in inventory
Shortage Costs
Cost of demand exceeding stock on hand. Why
should shortages be an issue if demand is known?
Other Costs: payroll, overtime, subcontracting
30. Aggregate Units
īŽ
īŽ
īŽ
īŽ
īŽ
īŽ
The method is (fundamentally) based on notion of
aggregate units. They may be:
Actual units of production
Weight (tons of steel)
Volume (gallons of gasoline)
Dollars (Value of sales)
Fictitious aggregated units
they are a composite that estimates a tangible âinput
constantâ
31. Developing aggregate units
One plant produced 6 models of washing
machines:
Model # hrs. Price % sales
A 5532 4.2 285 32
K 4242 4.9 345 21
L 9898 5.1 395 17
L 3800 5.2 425 14
M 26245.4 525 10
M 3880 5.8 725 06
Question: How do we deīŦne an aggregate unit here?
32. īŽ
īŽ
Notice: Price is not necessarily
proportional to worker hours (i.e., cost):
why?
For aggregating, we can use individual
product demand forecasts modiīŦed with a
weighted average (sales weights) of
individual item forecasts to develop a
aggregate production forecast
Developing aggregate units
33. This Aggregate Units needs a
measurable Labor Input:
īŽ
īŽ
Thus, Agg. Demand = .32*(DA5532) + .21(DK4242) +
âĻ + .06(DM3880)
This method for deīŦning an aggregate unit
points to an aggregate labor requirement (/Agg.
Unit) of:
.32(4.2) + .21(4.9) + . . . + .06(5.8) = 4.8644
worker hours
34. Prototype Aggregate Planning
īŽ
īŽ
īŽ
The washing machine plant is interested in
determining work force and production levels for
the next 8 months. Forecasted aggregate
demands for Jan-Aug. are: 420, 280, 460, 190,
310, 145, 110, 125.
Starting inventory at the end of December is 200
and the īŦrm would like to have 100 units on
hand at the end of August.
Find monthly production levels.
35. Constant Work Force Plan
īŽ
īŽ
Suppose that we are interested in determining a
production plan that doesnât change the size of
the workforce over the planning horizon. How
would we do that?
One method: In previous picture, draw a straight
line from origin to 1940 units in month 8: The
slope of the line is the number of units to
produce each month.
36. 1.
2.
3.
4.
5.
Most services canât be inventoried
Demand for services is diīŦcult to predict
Capacity is also diīŦcult to predict
Service capacity must be provided at the
appropriate place and time
Labor is usually the most constraining resource
for services
Aggregate Planning for Services