This document presents an agent-based model to study the impact of sharing factory breakdown information in a supply chain. The model extends the classic Beer Game model to include two factories. Two scenarios are examined: in the first, breakdown information is not shared between the factory and distributor; in the second, the factory shares information about breakdowns immediately. Preliminary experiments show the supply chain cost is significantly reduced when breakdown information is shared, and this benefit increases with higher breakdown frequency. The results demonstrate the value of "reverse information sharing" from suppliers to customers in managing supply chain risks.
This document provides background and instructions for Assignment 2 of an introduction to system dynamics course. The assignment asks students to practice identifying stocks and flows in various systems and mapping the stock and flow structures. It provides examples and guidance for representing physical and information stock and flow networks. Students are asked to identify stocks and flows in listed variables, and construct stock and flow diagrams for cases involving social security, e-commerce customers, and more. The document emphasizes correctly linking variables and units in stock and flow networks.
Managing Uncertainty , various perspectives and a case study using SAP-LAP. 1) Product-Process Change Compulsions in the industry perspective 2) Project Management Perspective 3) Systems Perspective
1) The document describes a study that uses a causal loop diagram (CLD) to model the impact of electronic data interchange (EDI) implementation on an operations system. The CLD identifies several feedback loops involving factors like error rate, work pressure, costs, and profit.
2) Implementing EDI reduces paperwork and the potential for errors, but increasing EDI use also raises IT costs. Higher error rates can increase costs and lower customer satisfaction and profit. This can increase work pressure and further raise error rates.
3) The CLD captures these complex relationships and feedback effects to provide insights into how changes in one part of the system, like implementing EDI, can reverberate through the entire operations
The document discusses supply chain management and e-supply chain management. It defines supply chain management as the coordination of activities involved in moving products from suppliers to customers. E-supply chain management uses internet technologies for coordination. There are three types of supply chains - responsive, adaptive, and intelligent - which differ in how quickly they can respond or adapt to changes. The major components of an e-supply chain are advanced scheduling, demand forecasting, transportation planning, distribution planning, and order commitment. E-supply chain fusion involves integrating existing supply chains for improved coordination through four stages - information sharing, joint performance measurement, realignment of work, and redesigning products and processes. Key issues in e-supply chain fusion are determining
DELL utilizes a build-to-order supply chain strategy where customer orders trigger product assembly. This approach keeps inventory costs low and allows for fast responses to demand changes. DELL also sells directly to customers rather than through retailers. This direct sales model creates efficiencies and strong customer relationships. DELL carefully manages demand across strategic, tactical, and operational levels. Accurate demand forecasting is crucial to DELL's supply chain success. Integration with suppliers also provides benefits while allowing partners to focus on their specializations.
A unique common fixed point theorems in generalized dAlexander Decker
This document presents definitions and properties related to generalized D*-metric spaces and establishes some common fixed point theorems for contractive type mappings in these spaces. It begins by introducing D*-metric spaces and generalized D*-metric spaces, defines concepts like convergence and Cauchy sequences. It presents lemmas showing the uniqueness of limits in these spaces and the equivalence of different definitions of convergence. The goal of the paper is then stated as obtaining a unique common fixed point theorem for generalized D*-metric spaces.
A universal model for managing the marketing executives in nigerian banksAlexander Decker
This document discusses a study that aimed to synthesize motivation theories into a universal model for managing marketing executives in Nigerian banks. The study was guided by Maslow and McGregor's theories. A sample of 303 marketing executives was used. The results showed that managers will be most effective at motivating marketing executives if they consider individual needs and create challenging but attainable goals. The emerged model suggests managers should provide job satisfaction by tailoring assignments to abilities and monitoring performance with feedback. This addresses confusion faced by Nigerian bank managers in determining effective motivation strategies.
A usability evaluation framework for b2 c e commerce websitesAlexander Decker
This document presents a framework for evaluating the usability of B2C e-commerce websites. It involves user testing methods like usability testing and interviews to identify usability problems in areas like navigation, design, purchasing processes, and customer service. The framework specifies goals for the evaluation, determines which website aspects to evaluate, and identifies target users. It then describes collecting data through user testing and analyzing the results to identify usability problems and suggest improvements.
This document provides background and instructions for Assignment 2 of an introduction to system dynamics course. The assignment asks students to practice identifying stocks and flows in various systems and mapping the stock and flow structures. It provides examples and guidance for representing physical and information stock and flow networks. Students are asked to identify stocks and flows in listed variables, and construct stock and flow diagrams for cases involving social security, e-commerce customers, and more. The document emphasizes correctly linking variables and units in stock and flow networks.
Managing Uncertainty , various perspectives and a case study using SAP-LAP. 1) Product-Process Change Compulsions in the industry perspective 2) Project Management Perspective 3) Systems Perspective
1) The document describes a study that uses a causal loop diagram (CLD) to model the impact of electronic data interchange (EDI) implementation on an operations system. The CLD identifies several feedback loops involving factors like error rate, work pressure, costs, and profit.
2) Implementing EDI reduces paperwork and the potential for errors, but increasing EDI use also raises IT costs. Higher error rates can increase costs and lower customer satisfaction and profit. This can increase work pressure and further raise error rates.
3) The CLD captures these complex relationships and feedback effects to provide insights into how changes in one part of the system, like implementing EDI, can reverberate through the entire operations
The document discusses supply chain management and e-supply chain management. It defines supply chain management as the coordination of activities involved in moving products from suppliers to customers. E-supply chain management uses internet technologies for coordination. There are three types of supply chains - responsive, adaptive, and intelligent - which differ in how quickly they can respond or adapt to changes. The major components of an e-supply chain are advanced scheduling, demand forecasting, transportation planning, distribution planning, and order commitment. E-supply chain fusion involves integrating existing supply chains for improved coordination through four stages - information sharing, joint performance measurement, realignment of work, and redesigning products and processes. Key issues in e-supply chain fusion are determining
DELL utilizes a build-to-order supply chain strategy where customer orders trigger product assembly. This approach keeps inventory costs low and allows for fast responses to demand changes. DELL also sells directly to customers rather than through retailers. This direct sales model creates efficiencies and strong customer relationships. DELL carefully manages demand across strategic, tactical, and operational levels. Accurate demand forecasting is crucial to DELL's supply chain success. Integration with suppliers also provides benefits while allowing partners to focus on their specializations.
A unique common fixed point theorems in generalized dAlexander Decker
This document presents definitions and properties related to generalized D*-metric spaces and establishes some common fixed point theorems for contractive type mappings in these spaces. It begins by introducing D*-metric spaces and generalized D*-metric spaces, defines concepts like convergence and Cauchy sequences. It presents lemmas showing the uniqueness of limits in these spaces and the equivalence of different definitions of convergence. The goal of the paper is then stated as obtaining a unique common fixed point theorem for generalized D*-metric spaces.
A universal model for managing the marketing executives in nigerian banksAlexander Decker
This document discusses a study that aimed to synthesize motivation theories into a universal model for managing marketing executives in Nigerian banks. The study was guided by Maslow and McGregor's theories. A sample of 303 marketing executives was used. The results showed that managers will be most effective at motivating marketing executives if they consider individual needs and create challenging but attainable goals. The emerged model suggests managers should provide job satisfaction by tailoring assignments to abilities and monitoring performance with feedback. This addresses confusion faced by Nigerian bank managers in determining effective motivation strategies.
A usability evaluation framework for b2 c e commerce websitesAlexander Decker
This document presents a framework for evaluating the usability of B2C e-commerce websites. It involves user testing methods like usability testing and interviews to identify usability problems in areas like navigation, design, purchasing processes, and customer service. The framework specifies goals for the evaluation, determines which website aspects to evaluate, and identifies target users. It then describes collecting data through user testing and analyzing the results to identify usability problems and suggest improvements.
The document discusses defining and testing new "outside-in" supply chain planning processes that use market data rather than just internal data. It summarizes the results of workshops and pilots with various companies testing these new approaches.
The key ideas are:
1) Traditional "inside-out" supply chain planning focuses only on internal data and is insufficient for today's disrupted environment.
2) New "outside-in" processes would use a wider range of market data signals to improve demand sensing and supply chain response times.
3) Workshops and pilots identified 9 new potential planning models and tested concepts like market-driven demand management and bi-directional orchestration.
4) The results showed these new approaches
University of PlymouthPEARL httpspearl.plymouth.ac.uk.docxouldparis
University of Plymouth
PEARL https://pearl.plymouth.ac.uk
Faculty of Arts and Humanities Plymouth Business School
2016-04
The impact of big data on world-class
sustainable manufacturing
Dubey, R
http://hdl.handle.net/10026.1/5175
10.1007/s00170-015-7674-1
The International Journal of Advanced Manufacturing Technology
All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with
publisher policies. Please cite only the published version using the details provided on the item record or
document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content
should be sought from the publisher or author.
1
The impact of Big Data on World Class Sustainable Manufacturing
Abstract
Big data (BD) has attracted increasing attention from both academics and
practitioners. This paper aims at illustrating the role of Big Data analytics in
supporting world-class sustainable manufacturing (WCSM). Using an extensive
literature review to identify different factors that enable the achievement of
WCSM through BD and 405 usable responses from senior managers gathered
through social networking sites (SNS), we propose a conceptual framework that
summarizes this role, test this framework using data which is heterogeneous,
diverse, voluminous, and possess high velocity, and highlight the importance
for academia and practice. Finally we conclude our research findings and
further outlined future research directions.
Key words: Big Data, World Class Sustainable Manufacturing, Social
Networking Site, Confirmatory factor Analysis, Sustainable Manufacturing.
1. Introduction
In recent years Big Data Analytics (BDA) has been an important subject of
debate among academics and practitioners. McKinsey Global Institute has
predicted that by 2018 the BDA needs for the United States alone will be more
than 1.5 million managers who need to possess skills in analyzing Big Data for
effective decision making. In developing countries, in the recent 13th
Confederation of Indian Industries manufacturing summit, BDA was at the
forefront of discussions among manufacturing professionals in India. The
Internet of things (IOT) and big data & predictive analytics are now within the
reach of the operations management community to begin to explore, with the
potential for measurable and meaningful impacts on the life of people in the
2
developing world (Accenture, 2013). On the other hand, thinkers such as
Professor Nassim Nicholas Taleb, in his interview in the Economic Times
highlighted the impacts of BD, but was skeptical about its success.
The literature on the role of BDA in Operations and Supply Chain Management
(OM/SCM) (for example Wamba et al., 2015) has argued for benefits from its
use, including, inter alia, 15-20% increase in ROI (Perrey et al., 2013),
productivity and competitiveness for companies and public se ...
How Can You Drive Opportunity If You Cannot Manage Risk?Lora Cecere
Report Details: The research for this report was conducted via an online survey from March 12 - May 11, 2018. Surveys were conducted among 93 respondents -- a mix of business users (manufacturers, wholesalers/distributors/co-operatives, and third-party logistics providers, n=34), vendors (software providers and consultants, n=39), and others (academics, analysts, unemployed, and others, n=20).
Objective: To understand the current and expected future state of supply chain risk management, the biggest drivers of risk, and the impact on supply chain disruptions. NOTE: supply chain risk management is defined as the proactive identification and assessment of potential risks to the supply chain, as well as the development of strategies to avoid these risks.
Highlight: Nearly two-thirds of respondents believe that their company performs better today on risk management practices than five years ago yet they had 3.5 disruptions last year on average. Managing risk requires a network approach. Today’s investments in end-to-end supply chain are by and large not effective in risk mitigation. Only 37% have visibility of extended-tier suppliers and most lack the solutions to manage global complexity.
Effect of Supply Chain Resilience Strategies on Operational Performance of Ma...AkashSharma618775
This document discusses a study on the effect of supply chain resilience strategies on operational performance of manufacturing firms in Nairobi, Kenya. The study aims to determine the role of multisourcing, nearshoring, product harmonization, and inventory management strategies on the operational performance of manufacturing firms. The study found that these variables all have a positive significant effect on operational performance. It is recommended that firms adopt some resilience strategies to varying degrees to improve performance. Enhancing supply chain risk management, such as quality planning and assurance, can also help mitigate risks and improve performance.
The MIT Global SCALE Network is an international alliance of research centers dedicated to developing and sharing innovations in supply chain and logistics. The network allows faculty, researchers, students, and companies from its six centers worldwide to collaborate on projects to create supply chain solutions with global applications. This report communicates the results of innovative supply chain research conducted by the Global SCALE Network to contribute to public knowledge. It analyzes the supply chain resilience of a fashion retailer through qualitative interviews and quantitative modeling of potential disruptions. It identifies areas for improvement in the retailer's cost-benefit analysis of disruptions, recovery planning, and redesign of recovery processes. Recommendations include developing resilience metrics and contingency plans to allow distribution centers to support each other
An Innovative Approach to Predict Bankruptcyvivatechijri
Bankruptcy is a legal status of a person or other organization that cannot repay their debts to
creditors. Bankruptcy prediction is the task of predicting bankruptcy and by doing various surveys we can avoid
financial distress of firms. It is a huge area of accounting and finance research. The significance of this area is
an important part of financial specialists and creditors in assessing the probability that a firm may go bankrupt
or not. Estimating the risk of corporate bankruptcies is very important as the effect of bankruptcy is on a global
level. The aim of predicting financial distress is to develop a predictive model that combines various economic
factors which allow foreseeing the financial status of a firm. In this domain, various methods were proposed that
were based on neural networks, Support Vector Machines, Decision Trees, Random Forests, Naïve Bayes,
Balanced Bagging and Logistic Regression. In this paper, we document our observations as we explore and build
a Restricted Boltzmann Machine to Bankruptcy Prediction. We started by carrying out data pre-processing where
we impute the missing data values using Mean Imputation. To solve the data imbalance issue, we apply the
Synthetic Minority Oversampling Technique (SMOTE) to oversample the minority class labels. Finally, we
analyze and evaluate the performance of the model.
Disruption/Risk Management in supply chains- a reviewBehzad Behdani
This paper describes an integrated framework for handling disruptions in supply chains. The integrated framework incorporates two main perspectives on managing disruptions, namely pre- and post-disruption perspectives, which are usually treated as separate in the existing frameworks. Next, the proposed integrated framework is used to review the literature in supply chain risk/disruption management. The review gives an overview of the key aspects and specific methods that can be used for each step in the framework. Based on the review, some main observations are also discussed. The first is that literature has not uniformly discussed different parts of the framework; pre-disruption steps, such as risk identification and risk treatment, have been explored extensively while post-disruption steps such as disruption detection and learning have been given far less attention. Secondly, there is a lack of quantitative (simulation and modeling) studies for handling supply chain disruptions. These two gaps, therefore, represent avenues for future research on supply chain risk/disruption management.
the ranking and importance of journals can vary significantly depending on your specific field of study or interest. It's crucial to consult with academic advisors, professors, and experts in your field to identify the most relevant and respected journals for your research. Additionally, you should always check the latest impact factors and rankings for the most up-to-date information.
Corporate reputation is an intangible asset amounting to up to 70% of an organisation’s market capitalisation. Recent evolutions in the business environment and social communications have made stakeholder engagement an essential part of the strategy of responsible and successful organisations in order to maintain this capital. But research shows that most engagement efforts in multinational or multi-services companies are kept in silos and uncoordinated across business units or departments.
This document describes some of the engagement guidelines provided by the AA1000 and GRI assurance standards and how following these guidelines with an appropriate collaborative, full circle platform can help:
* identify important stakeholders and groups ;
* map them and their opinions on the organisation’s strategic issues ;
* engage them appropriately and monitor impacts.
in a natural continuous improvement cycle to help respond to short term events in the context of a long term communication and corporate reputation management strategy.
It also describes engagement in the context of crisis management and social media to show how detecting earlier warning signals both enhances the organisation’s ability to contain the crisis and lowers the cost at which this is done.
This document presents a system for predicting corporate bankruptcy using textual disclosures from SEC filings. It discusses how previous studies have used financial ratios and market data to predict bankruptcy, but that textual disclosures also provide important unstructured qualitative information. The proposed system uses natural language processing and machine learning algorithms to extract features from 10-K and 10-Q filings and predict bankruptcy with high accuracy, even before the final bankruptcy occurs. It aims to improve on previous bankruptcy prediction methods by incorporating both financial and textual data sources.
Case StudyThe largest premium chocolate manufacturer has B2B a.docxwendolynhalbert
Case Study
The largest premium chocolate manufacturer has B2B and B2C customers. It implemented the Enterprise Resource Planning (ERP) as its centralised database in 1999. It is a practical application for inventory management.
This case study focuses on value adding to the supply chain via information sharing and information quality. Several information-sharing issues have been identified. They include lack of understanding of ERP's potential, IT skill gap, resistance caused by legacy of previous systems and a disorganisation in transportation.
Theories examined in this report focus on information quality and information sharing. Although certain information is considered to be confidential and commercially sensitive, recent research in management underlines the benefits of sharing business intelligence. The main tools are concepts that recognise collaborative planning, forecasting, and replenishment to develop a mutual interest for partners and customers.
Implementation of the theories requires time. However, time is not at disposition. The necessity to implement a strategy with immediate result can offer a consensus between short-term and long-term necessities.
Recommendations include the creation of a training department. The purpose of this is to encourage a collaborative planning approach amongst all participants of supply chain. It is of utmost importance for this firm to monitor its performance, and surface problems to the board's attention as soon as possible.
In conclusion, this firm's has several areas of concern, such ass dis-organisation in transportation and training of employees. On the other hand, it is in its early stage of collaborative planning and a wonderful product.
Introduction
This report focuses on value adding to the supply chain via information sharing and information quality. Information is one of the most significant factors for a business to gain competitive advantage by improving communication and processes to produce quality goods and services.
This case study examines the operation of Chocolate company subsequent to its implementation of the Enterprise Resource Planning (ERP) system in 1999. Specific problems are identified and solutions are recommended for process improvement to add value to the supply chain.
Background
The chocolate firm was established in 1900 in Pennsylvania. Its client base is B2B and B2C. Its head office and distribution centre are located in Philadelphia and Chicago, prime manufacture is in Guadalajara, Mexico 7. Supply of raw materials does not pose a lead-time problem, however, transportation from the Guadalajara factory to Chicago distribution centre and transit bottleneck have contributed to lead time.
This firm has implemented the Enterprise Resource Planning (ERP) as its centralised database in 1999.
Problem Identification
A number of information sharing and information quality issues have been identified:
Lack of understanding of ERP's potential
Many researchers have suggested t ...
A gigantic archive of terabytes of information is created every day from current data frameworks and computerized advances, for example, Internet of Things and distributed computing. Examination of these gigantic information requires a ton of endeavors at various levels to extricate information for dynamic. Hence, huge information examination is an ebb and flow region of innovative work. The essential goal of this paper is to investigate the likely effect of huge information challenges, and different instruments related with it. Accordingly, this article gives a stage to investigate enormous information at various stages. Moreover, it opens another skyline for analysts to build up the arrangement, in light of the difficulties and open exploration issues.
This document discusses data quality and why it is important. It begins by defining what high quality data is, noting that data should be "fit for use" and conform to standards. It then discusses five key aspects of data quality - relevance, accuracy, timeliness, comparability, and completeness. The document explains that there are three ways to obtain high quality data: prevention, detection, and repair, but prevention is most effective. It provides a practical example of making a customer database "fit for use" by developing clear requirements and procedures.
2003 work climate and organizational effectiveness-the application of data en...Henry Sumampau
This document discusses using data envelopment analysis (DEA) to measure organizational effectiveness when multiple inputs and outputs are involved. DEA calculates a single efficiency measure for each organization being analyzed without requiring the researcher to assign subjective weightings to inputs and outputs. The document argues that previous research on the relationship between organizational climate and effectiveness has been limited by analyzing multiple separate measures of effectiveness. It suggests that using DEA to generate a single efficiency measure for each organization can help overcome these limitations and provide a more comprehensive analysis of the climate-effectiveness relationship when multiple dimensions of effectiveness are involved. An example application of DEA to measure the relative efficiencies of branch offices in a retail banking network is described.
Interpreting available data is a focal issue in data mining. Gathering of primary data is a difficult and expensive affair for assessing the trends for any business decision especially when multiple players are present. There is no uniform formula-type work procedure to deduce information from a vast data set especially if the data formats in the secondary sources are not uniform and need enormous cleansing to
mend the data for statistical analysis. In this paper, an incremental approach to cleanse data using a simple yet extended procedure is presented and it is shown how to deduce conclusions to facilitate business decisions. Freely available Indian Telecom Industry’s data over a year is used to illustrate this process. It is shown how to conclude the superiority of one telecom service provider over the others comparing different parameters like network availability, customer service quality etc. using a relative parameter
quantification technique. It is found that this method is computationally less costly than the other known
methods.
The Global Supply Chain Ups the Ante for Risk ManagementLora Cecere
This document discusses the importance of risk management for companies with global supply chains. It summarizes the results of a quantitative study on current risk management practices. Some key findings are:
1) Risk management is seen as important for preventing disruptions but ranks lower than other business issues in terms of pain.
2) Supply chain disruptions, especially those involving ports, can have major impacts that linger for years.
3) Advanced risk management programs are led by top executives and focus on prevention, early detection of issues, and contingency planning.
4) Monitoring supplier financial health and developing suppliers are seen as important aspects of risk management by more mature programs.
11.isea vol 0004www.iiste.org call for paper no 1 pp. 74-87Alexander Decker
This study examines the relationship between managers' perceptions of environmental accounting and actual environmental accounting disclosures by Indonesian companies. A survey was conducted of managers at companies listed on the Jakarta Stock Exchange to assess their perceptions. Company annual reports were also analyzed to measure actual environmental disclosures. The researchers hypothesized a positive relationship between managerial perceptions and disclosure quality. Preliminary results found a correlation, supporting the view that perceptions influence reporting behavior. The study aims to provide evidence for regulators on factors influencing disclosure to improve accounting regulations and standards.
Research paper impact evaluation for collaborative information supply chainKenny Meesters
Emerging technologies provide opportunities for the humanitarian responders’ community to enhance the
effectiveness of their response to crisissituations. A part of this development can be contributed to a new type of
information supply chains -driven by collaboration with digital, online communities- enabling organizations to
make better informed decisions. However, how exactly and to what extend this collaboration impacts the
decision making process is unknown. To improve these new information exchanges and the corresponding
systems, an evaluation method is needed to assess the performance of these processes and systems. This paper
builds on existing evaluation methods for information systems and design principles to propose such an impact
evaluation framework. The proposed framework has been applied in a case study to demonstrate its potential to
identify areas for further improvement in the (online) collaboration between information suppliers and users.
Abnormalities of hormones and inflammatory cytokines in women affected with p...Alexander Decker
Women with polycystic ovary syndrome (PCOS) have elevated levels of hormones like luteinizing hormone and testosterone, as well as higher levels of insulin and insulin resistance compared to healthy women. They also have increased levels of inflammatory markers like C-reactive protein, interleukin-6, and leptin. This study found these abnormalities in the hormones and inflammatory cytokines of women with PCOS ages 23-40, indicating that hormone imbalances associated with insulin resistance and elevated inflammatory markers may worsen infertility in women with PCOS.
The document discusses defining and testing new "outside-in" supply chain planning processes that use market data rather than just internal data. It summarizes the results of workshops and pilots with various companies testing these new approaches.
The key ideas are:
1) Traditional "inside-out" supply chain planning focuses only on internal data and is insufficient for today's disrupted environment.
2) New "outside-in" processes would use a wider range of market data signals to improve demand sensing and supply chain response times.
3) Workshops and pilots identified 9 new potential planning models and tested concepts like market-driven demand management and bi-directional orchestration.
4) The results showed these new approaches
University of PlymouthPEARL httpspearl.plymouth.ac.uk.docxouldparis
University of Plymouth
PEARL https://pearl.plymouth.ac.uk
Faculty of Arts and Humanities Plymouth Business School
2016-04
The impact of big data on world-class
sustainable manufacturing
Dubey, R
http://hdl.handle.net/10026.1/5175
10.1007/s00170-015-7674-1
The International Journal of Advanced Manufacturing Technology
All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with
publisher policies. Please cite only the published version using the details provided on the item record or
document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content
should be sought from the publisher or author.
1
The impact of Big Data on World Class Sustainable Manufacturing
Abstract
Big data (BD) has attracted increasing attention from both academics and
practitioners. This paper aims at illustrating the role of Big Data analytics in
supporting world-class sustainable manufacturing (WCSM). Using an extensive
literature review to identify different factors that enable the achievement of
WCSM through BD and 405 usable responses from senior managers gathered
through social networking sites (SNS), we propose a conceptual framework that
summarizes this role, test this framework using data which is heterogeneous,
diverse, voluminous, and possess high velocity, and highlight the importance
for academia and practice. Finally we conclude our research findings and
further outlined future research directions.
Key words: Big Data, World Class Sustainable Manufacturing, Social
Networking Site, Confirmatory factor Analysis, Sustainable Manufacturing.
1. Introduction
In recent years Big Data Analytics (BDA) has been an important subject of
debate among academics and practitioners. McKinsey Global Institute has
predicted that by 2018 the BDA needs for the United States alone will be more
than 1.5 million managers who need to possess skills in analyzing Big Data for
effective decision making. In developing countries, in the recent 13th
Confederation of Indian Industries manufacturing summit, BDA was at the
forefront of discussions among manufacturing professionals in India. The
Internet of things (IOT) and big data & predictive analytics are now within the
reach of the operations management community to begin to explore, with the
potential for measurable and meaningful impacts on the life of people in the
2
developing world (Accenture, 2013). On the other hand, thinkers such as
Professor Nassim Nicholas Taleb, in his interview in the Economic Times
highlighted the impacts of BD, but was skeptical about its success.
The literature on the role of BDA in Operations and Supply Chain Management
(OM/SCM) (for example Wamba et al., 2015) has argued for benefits from its
use, including, inter alia, 15-20% increase in ROI (Perrey et al., 2013),
productivity and competitiveness for companies and public se ...
How Can You Drive Opportunity If You Cannot Manage Risk?Lora Cecere
Report Details: The research for this report was conducted via an online survey from March 12 - May 11, 2018. Surveys were conducted among 93 respondents -- a mix of business users (manufacturers, wholesalers/distributors/co-operatives, and third-party logistics providers, n=34), vendors (software providers and consultants, n=39), and others (academics, analysts, unemployed, and others, n=20).
Objective: To understand the current and expected future state of supply chain risk management, the biggest drivers of risk, and the impact on supply chain disruptions. NOTE: supply chain risk management is defined as the proactive identification and assessment of potential risks to the supply chain, as well as the development of strategies to avoid these risks.
Highlight: Nearly two-thirds of respondents believe that their company performs better today on risk management practices than five years ago yet they had 3.5 disruptions last year on average. Managing risk requires a network approach. Today’s investments in end-to-end supply chain are by and large not effective in risk mitigation. Only 37% have visibility of extended-tier suppliers and most lack the solutions to manage global complexity.
Effect of Supply Chain Resilience Strategies on Operational Performance of Ma...AkashSharma618775
This document discusses a study on the effect of supply chain resilience strategies on operational performance of manufacturing firms in Nairobi, Kenya. The study aims to determine the role of multisourcing, nearshoring, product harmonization, and inventory management strategies on the operational performance of manufacturing firms. The study found that these variables all have a positive significant effect on operational performance. It is recommended that firms adopt some resilience strategies to varying degrees to improve performance. Enhancing supply chain risk management, such as quality planning and assurance, can also help mitigate risks and improve performance.
The MIT Global SCALE Network is an international alliance of research centers dedicated to developing and sharing innovations in supply chain and logistics. The network allows faculty, researchers, students, and companies from its six centers worldwide to collaborate on projects to create supply chain solutions with global applications. This report communicates the results of innovative supply chain research conducted by the Global SCALE Network to contribute to public knowledge. It analyzes the supply chain resilience of a fashion retailer through qualitative interviews and quantitative modeling of potential disruptions. It identifies areas for improvement in the retailer's cost-benefit analysis of disruptions, recovery planning, and redesign of recovery processes. Recommendations include developing resilience metrics and contingency plans to allow distribution centers to support each other
An Innovative Approach to Predict Bankruptcyvivatechijri
Bankruptcy is a legal status of a person or other organization that cannot repay their debts to
creditors. Bankruptcy prediction is the task of predicting bankruptcy and by doing various surveys we can avoid
financial distress of firms. It is a huge area of accounting and finance research. The significance of this area is
an important part of financial specialists and creditors in assessing the probability that a firm may go bankrupt
or not. Estimating the risk of corporate bankruptcies is very important as the effect of bankruptcy is on a global
level. The aim of predicting financial distress is to develop a predictive model that combines various economic
factors which allow foreseeing the financial status of a firm. In this domain, various methods were proposed that
were based on neural networks, Support Vector Machines, Decision Trees, Random Forests, Naïve Bayes,
Balanced Bagging and Logistic Regression. In this paper, we document our observations as we explore and build
a Restricted Boltzmann Machine to Bankruptcy Prediction. We started by carrying out data pre-processing where
we impute the missing data values using Mean Imputation. To solve the data imbalance issue, we apply the
Synthetic Minority Oversampling Technique (SMOTE) to oversample the minority class labels. Finally, we
analyze and evaluate the performance of the model.
Disruption/Risk Management in supply chains- a reviewBehzad Behdani
This paper describes an integrated framework for handling disruptions in supply chains. The integrated framework incorporates two main perspectives on managing disruptions, namely pre- and post-disruption perspectives, which are usually treated as separate in the existing frameworks. Next, the proposed integrated framework is used to review the literature in supply chain risk/disruption management. The review gives an overview of the key aspects and specific methods that can be used for each step in the framework. Based on the review, some main observations are also discussed. The first is that literature has not uniformly discussed different parts of the framework; pre-disruption steps, such as risk identification and risk treatment, have been explored extensively while post-disruption steps such as disruption detection and learning have been given far less attention. Secondly, there is a lack of quantitative (simulation and modeling) studies for handling supply chain disruptions. These two gaps, therefore, represent avenues for future research on supply chain risk/disruption management.
the ranking and importance of journals can vary significantly depending on your specific field of study or interest. It's crucial to consult with academic advisors, professors, and experts in your field to identify the most relevant and respected journals for your research. Additionally, you should always check the latest impact factors and rankings for the most up-to-date information.
Corporate reputation is an intangible asset amounting to up to 70% of an organisation’s market capitalisation. Recent evolutions in the business environment and social communications have made stakeholder engagement an essential part of the strategy of responsible and successful organisations in order to maintain this capital. But research shows that most engagement efforts in multinational or multi-services companies are kept in silos and uncoordinated across business units or departments.
This document describes some of the engagement guidelines provided by the AA1000 and GRI assurance standards and how following these guidelines with an appropriate collaborative, full circle platform can help:
* identify important stakeholders and groups ;
* map them and their opinions on the organisation’s strategic issues ;
* engage them appropriately and monitor impacts.
in a natural continuous improvement cycle to help respond to short term events in the context of a long term communication and corporate reputation management strategy.
It also describes engagement in the context of crisis management and social media to show how detecting earlier warning signals both enhances the organisation’s ability to contain the crisis and lowers the cost at which this is done.
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Case StudyThe largest premium chocolate manufacturer has B2B a.docxwendolynhalbert
Case Study
The largest premium chocolate manufacturer has B2B and B2C customers. It implemented the Enterprise Resource Planning (ERP) as its centralised database in 1999. It is a practical application for inventory management.
This case study focuses on value adding to the supply chain via information sharing and information quality. Several information-sharing issues have been identified. They include lack of understanding of ERP's potential, IT skill gap, resistance caused by legacy of previous systems and a disorganisation in transportation.
Theories examined in this report focus on information quality and information sharing. Although certain information is considered to be confidential and commercially sensitive, recent research in management underlines the benefits of sharing business intelligence. The main tools are concepts that recognise collaborative planning, forecasting, and replenishment to develop a mutual interest for partners and customers.
Implementation of the theories requires time. However, time is not at disposition. The necessity to implement a strategy with immediate result can offer a consensus between short-term and long-term necessities.
Recommendations include the creation of a training department. The purpose of this is to encourage a collaborative planning approach amongst all participants of supply chain. It is of utmost importance for this firm to monitor its performance, and surface problems to the board's attention as soon as possible.
In conclusion, this firm's has several areas of concern, such ass dis-organisation in transportation and training of employees. On the other hand, it is in its early stage of collaborative planning and a wonderful product.
Introduction
This report focuses on value adding to the supply chain via information sharing and information quality. Information is one of the most significant factors for a business to gain competitive advantage by improving communication and processes to produce quality goods and services.
This case study examines the operation of Chocolate company subsequent to its implementation of the Enterprise Resource Planning (ERP) system in 1999. Specific problems are identified and solutions are recommended for process improvement to add value to the supply chain.
Background
The chocolate firm was established in 1900 in Pennsylvania. Its client base is B2B and B2C. Its head office and distribution centre are located in Philadelphia and Chicago, prime manufacture is in Guadalajara, Mexico 7. Supply of raw materials does not pose a lead-time problem, however, transportation from the Guadalajara factory to Chicago distribution centre and transit bottleneck have contributed to lead time.
This firm has implemented the Enterprise Resource Planning (ERP) as its centralised database in 1999.
Problem Identification
A number of information sharing and information quality issues have been identified:
Lack of understanding of ERP's potential
Many researchers have suggested t ...
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2003 work climate and organizational effectiveness-the application of data en...Henry Sumampau
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Interpreting available data is a focal issue in data mining. Gathering of primary data is a difficult and expensive affair for assessing the trends for any business decision especially when multiple players are present. There is no uniform formula-type work procedure to deduce information from a vast data set especially if the data formats in the secondary sources are not uniform and need enormous cleansing to
mend the data for statistical analysis. In this paper, an incremental approach to cleanse data using a simple yet extended procedure is presented and it is shown how to deduce conclusions to facilitate business decisions. Freely available Indian Telecom Industry’s data over a year is used to illustrate this process. It is shown how to conclude the superiority of one telecom service provider over the others comparing different parameters like network availability, customer service quality etc. using a relative parameter
quantification technique. It is found that this method is computationally less costly than the other known
methods.
The Global Supply Chain Ups the Ante for Risk ManagementLora Cecere
This document discusses the importance of risk management for companies with global supply chains. It summarizes the results of a quantitative study on current risk management practices. Some key findings are:
1) Risk management is seen as important for preventing disruptions but ranks lower than other business issues in terms of pain.
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Research paper impact evaluation for collaborative information supply chainKenny Meesters
Emerging technologies provide opportunities for the humanitarian responders’ community to enhance the
effectiveness of their response to crisissituations. A part of this development can be contributed to a new type of
information supply chains -driven by collaboration with digital, online communities- enabling organizations to
make better informed decisions. However, how exactly and to what extend this collaboration impacts the
decision making process is unknown. To improve these new information exchanges and the corresponding
systems, an evaluation method is needed to assess the performance of these processes and systems. This paper
builds on existing evaluation methods for information systems and design principles to propose such an impact
evaluation framework. The proposed framework has been applied in a case study to demonstrate its potential to
identify areas for further improvement in the (online) collaboration between information suppliers and users.
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Sharing breakdown information in supply chain systems
1. Information and Knowledge Management www.iiste.org
ISSN 2224-5758 (Paper) ISSN 2224-896X (Online)
Vol 2, No.4, 2012
Sharing Breakdown Information in Supply Chain Systems:
An Agent-Based Modelling Approach
Yasser Ibrahim1, 2 Ghada Deghedi2*
1. Department of MIS, College of Business Administration, King Saud Univ., Riyadh 11451, KSA
2. Department of Social Science Computing, Faculty of Economics and Political Science, Cairo Univ., Cairo
11435, Egypt
* E-mail of the corresponding author: Ghada_a_d@yahoo.com
Abstract
Sharing the different types of information among Supply Chain (SC) agents has often been cited as a way to reduce
the SC risks. In this paper, an agent-based representation of the Beer Game Model (BGM) is used to demonstrate
how disruptions, occurring to the factory of a SC, can negatively affect its overall performance, and how sharing the
factory disruption information can effectively help blocking the evolution of risk in the SC and improve its
performance. The BGM is extended in this research to include two factories. The concept of Reverse Information
Sharing (RIS) is introduced as a mechanism for sharing the breakdown information. The results show a significant
reduction in the cost of the SC and each of its agents due to the RIS. In addition, the analysis shows that the RIS
significance is getting larger with the increase of the disruption frequency.
Keywords: Reverse Information Sharing, Beer Game, Agent-Based Modeling, Supply Chain Risk.
1. Introduction
Information Sharing (IS) has emerged as one of the most essential practices in improving the performance of Supply
Chains (SCs). Downstream IS or the demand-side information has been focused on in the literature (e.g., the sales
information or inventory status at the sale points). This represents, however, a single type of the entire information
flow in a SC (see, for example, Lee, So, & Tang 2000; Chen, Drezner, Ryan, & Levi 2000; Xu, Dong, & Evers 2001).
The upstream IS or supply-side information forms another type of IS that has been also proved crucial for the SC
management (Li & Gao 2008). This type of IS includes sharing aspects, such as, Lead-Time (LT), new-product
introduction, and plant operations. In contrast to the downstream IS, the upstream IS has received less attention
(Chen 2003). A recent trend stresses its importance as a complementary approach to sharing the downstream
information.
The new trend of sharing the upstream information, referred to here as Reverse Information Sharing (RIS), is driven
by two factors. The first factor considers the availability of the technologies required for applying this type of IS.
This includes the Enterprise Resource Planning (ERP) systems, Customer Relationship Management (CRM) systems,
and Business-To-Business (B2B) exchanges. The second factor is the increased customer awareness of the importance
of IS and, as a consequence, the increased customer pressure for sharing the information including the upstream
information (Jain & Moinzadeh, 2005).
Although the RIS appears to be widely applicable now, its full impact on the SC has not been fully studied. Most of
the existing models about upstream information investigate sharing the LT or supply availability information. For
example, Chen & Yu 2005 quantify the value of sharing the LT information in a single-location inventory system.
They assume a model with a single supplier that knows exactly the LT for every replenishment order. The study
shows that the cost savings from sharing the LT information can be significant. Jain & Moinzadeh 2005 study a
one-manufacturer one-retailer inventory system in which the retailer is allowed to access the inventory information
of the manufacturer. The numerical investigations lead to insights about the value of this type of information to the
retailer and demonstrate how RIS might increase the manufacturer’s profits. The model also leads to insights that
provide guidance to managers on when and how to apply RIS.
Lee, Padmanabhan, & Whang 1997 discuss the possibility of preventing the bullwhip effect through sharing the
19
2. Information and Knowledge Management www.iiste.org
ISSN 2224-5758 (Paper) ISSN 2224-896X (Online)
Vol 2, No.4, 2012
manufacturer inventory information with the downstream agents. Croson & Donohue 2005 examine the effectiveness
of giving the SC agents access to the downstream inventory information for alleviating the bullwhip effect. They find
that sharing only upstream information offers no significant performance improvement. Rather than sharing the LT or
supply availability information, Li & Gao 2008 analyze the effect of sharing the upstream information of the
introduction of a new product. They contrast the case in which the manufacturer does not share the upstream
information about the new-product with the retailer and the case in which the manufacturer shares the information.
They demonstrate that information sharing improves the performance of both supply chain entities. They find also
that when demand variability increases, information sharing adds more benefits to the supply chain.
This paper introduces RIS as a promising mechanism for SC risk management. The more you know, and know early
enough, the less unprepared you may be about the unforeseen developments in the SC.
Risk is broadly defined as a chance of danger, damage, loss, injury, or any other undesired consequences (Harlanda,
Brenchleyb, & Walkera, 2003). Juttner 2005 classifies SC risks into Supply Risks (SRs) and Demand Risks (DRs).
While the SRs influence the downstream agents, the DRs influence the upstream agents. Kuijpers 2009 defines
Supply Chain Disruption Risk Management (SCDRM) as the process of systematically identifying, analyzing, and
dealing with disruption risks in SCs, through coordination or collaboration among the SC agents, to decrease SC
vulnerability and increase SC resilience, so as to ensure profitability and continuity for the whole SC. SCDRM thus
focuses on reducing the chance or the impact of risk with an ultimate goal of ensuring the SC continuity (For a
review about SCDRM see: Harlanda, Brenchleyb, & Walkera, 2003; Chopra & Sodhi 2004; Tang 2006).
When a major disruption occurs, many SCs tend to break down and take a long time to recover. Sheffi & Jr 2005
present a profile for the company response to disruption characterized by eight phases (see Figure 1). First, in the
preparation phase, a company can foresee and prepare for disruption and hence minimize its negative effects.
However, in some cases, there is a little or no warning before the disruption event by which the supplier is shutdown.
The first response should then aim at controlling the situation and preventing further damage. The full impact of
some disruptions can be felt immediately, while for others, the full impact can take time. During the time between
the disruptive event and the full impact, performance usually starts to deteriorate. Once the full impact hits,
performance often drops precipitously. Recovery preparations typically start in parallel with the first response and
sometimes even prior to the disruption, if it has been anticipated. The recovery phase might involve qualifying other
suppliers and redirecting suppliers’ resources (For a comparison between the single supplier approach and multiple
supplier approach see Pochard, 2003; Yu, Zeng, & Zhao 2009). To get back to normal operation levels, many
companies make up for lost production by running at higher than normal utilization. It typically takes time to recover
from disruption, but if customer relationships are damaged, the impact can be especially long-lasting and difficult to
recover from.
20
3. Information and Knowledge Management www.iiste.org
ISSN 2224-5758 (Paper) ISSN 2224-896X (Online)
Vol 2, No.4, 2012
Performance 8.Long-term
impact
1. Preparation
4.Initial
impact
6.Preparation
for recovery
7. Recovery
3.First
response Time
2. Disruption 5. Time of
event full impact
Figure 1: The Disruption Profile (Sheffi & Jr 2005)
Given the increased importance of risk management for today’s complex SC systems, this paper contributes to the
literature by analyzing the effect of sharing the upstream disruption information, as a kind of RIS, on alleviating the
disruption problems. In this context, disruptions are defined as major breakdowns (BDs) in the production or
distribution agents in a SC. This might include events, such as, fire, machine breakdown, or unexpected shortage in
capacity that creates a bottleneck, quality problems, or natural disasters (Handfield 2007).
In this research, an Agent Based Model (ABM) of a typical Beer Game (BG) is introduced to study the value of
sharing the disruption information among the SC agents. BG is a widely-known SC simulation model that is used for
studying the features of information and physical flows distribution in supply networks (see Simchi-Levi & Zhao
2003; Klimov & Merkuryev 2006). The ABM is a relatively new simulation approach. It is used to represent the
dynamics of the interacting agents in the SC systems for its flexibility in representing heterogeneous, interacting
agents in an open environment (Charoo, Santos, & Reis 2008).
In the simulation, a factory sudden disruption, that hinders its ability to fulfill new orders, is introduced. The results
of two scenarios for the sudden disruption are investigated and compared. In Scenario 1, the disruption information is
not shared. In Scenario 2, the factory shares the disruption information with the distributor.
This paper is organized as follows. In Section 2, the experimental model is discussed. Section 3 presents the results.
Finally, Section 4 concludes the results and discusses the possible extensions to this research.
2. The Experimental Model
The BG is simulated as a multi-agent system to investigate the significance of the RIS on the SC performance in the
abnormal cases. The model is designed to allow the investigation from the viewpoint of the SC system as a whole
and from the viewpoint of each of its agents.
The model is developed using VB.Net. Each agent type is represented as a class with a set of attributes, e.g. the
inventory level of the agent, and a set of predefined behavioral rules, for guiding the decision making process of the
agents of this type. The behavioral rules include actions to be taken in the different situations including how to
handle customer demand, when to replenish the inventory, and how to decide the level of the next order. The
following subsections include a detailed description of the model.
2.1 The Agents
Five main classes of agents are defined representing the customer, the retailer, the wholesaler, the distributor, and the
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factory. From each class a number of agents can be defined. For example, two factories are defined in the model.
Product and Breakdown Information Flow
Factory1
Customer Retailer Wholesaler Distributor
Demand Information Flow Factory 2
Figure 2: The Beer Game Model With Two Factories
Each agent in the model represents a SC node that places orders to its supplier to fulfill its clients’ demand.
Customers are modeled as a collective end-node agent that places orders to the retailer according to a pre-defined
consumption pattern. The BGM assumes that the retailer is the only agent that knows the real market demand. The
demand information is consecutively transmitted, starting from the retailer, up to the upstream agents in a form of
orders. At the other end of the chain, the factory agent is placed and assumed to be ready to immediately fulfil any
order. This is because the BG model assumes that the factory has an unlimited production capacity with unlimited
supply of the raw material.
This research introduces factory breakdown (BD) as a source of SC disruption and thoroughly examines the effect of
sharing the BD information on alleviating the problem at the level of the entire SC as well as at the level of each of
its agents.
2.2 The Agents’ Behaviour
Each agent has an objective of minimizing its inventory, and hence cost, through optimizing the quantity to order.
Although each agent is self-interested and free to decide for itself when and how much to order, the goal of the entire
SC should still be satisfying the end-customers; otherwise, all the agents will lose. Figure 3 shows the interaction
frame between any two agents in a SC.
Figure 3: The Interaction Frame between Two Agents in a SC (Jeroen, Florin, & Gerd 2004)
In their repetitive interaction, each agent sends an order to and receives a shipment from its upstream agent. The
shipment received in the current cycle fulfills the orders from the previous cycles depending on the LT. Each agent
adds the shipment received to its inventory and the quantity ordered from it to its backorder, if any, to determine its
total outstanding demand. The agent fulfils the total demand if its inventory permits, i.e., the inventory is equal to or
greater than the total demand. The agent then ships the quantity demanded, deducts it from the inventory, and sets the
backorder quantity to zero. If the inventory is insufficient, the entire inventory is shipped and the remaining,
unfulfilled demand is added to the backorder. Finally, each agent decides the amount to order from its supplier and
then calculates its cost. This cycle is repeated long enough to study the system behavior. The typical time granularity
for the BGM is a “week” and the typical number of cycles is 50 weeks.
When a sudden BD occurs at the main factory (F1), the factory halts its production and hence is not capable of
sending any shipments to its downstream agents. The distributor is the first agent that realizes the problem then the
effect of the factory stoppage is felt all over the SC. Because of the existence of more than one supplier, the
distributor switches to another factory, F2. However, the earlier the BD problem is realized, the less the damage to
the SC and each of its agents is expected.
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3. Experiments and Results
As in a typical BG, the market demand is deterministic and set at the level of eight units/week. As we are not
interested in studying the bullwhip effect, the demand is fixed during the simulation. All experiments run for 50
cycles (weeks). The inventory/backorder cost ratio is assumed 0.5. The ordering LT is assumed one week, the
shipping LT is two weeks, and hence the LT is 3 weeks. In contrast to typical BG simulations, the initial inventory of
all agents is set to zero instead of four units. This is to neutralize the inventory effect and focus on studying the
significance of the RIS on the backorder accumulation.
A set of preliminary experiments is conducted to check the influence of the BD parameters on the results. Afterwards,
two scenarios are examined. In Scenario 1, the factory does not notify the distributor with the BD problem. This case
is referred to as No Reverse Information Sharing (NRIS) case. In Scenario 2, the factory notifies the distributor with
the BD immediately after it occurs. This is referred to as the Reverse Information Sharing (RIS) case. The results of
Scenario 1 and Scenario 2 are then contrasted.
3.1 Preliminary Investigations
This section is devoted to study the sensitivity of the model, the SC average cost in particular, to the new BD
parameters: the Breakdown Week (BDW), Duration (BDD), and frequency or Repetition (BDR).
3.1.1 Influence of Breakdown Time
Under a fixed breakdown duration (BDD=5) occurring only once (BDR=1), the BDW intuitively shows no influence
on the results as long as the BD occurs long enough before the end of the simulation. In particular, the BDW needs to
be assumed before week 40 to allow the order and shipment cycle to complete and hence report the results after the
system is completely stabilized. This result is applicable in both cases of NRIS and RIS.
3.1.2 Influence of Breakdown Duration
This experiment investigates the influence of the BDD on the overall SC cost. A single BD is assumed to occur at
week 25. Ten different BDD are examined: BDD ∈{1, 2,…, 10}. The results show no influence of the BDD on the
SC average cost in both cases of NRIS and RIS. This is actually for two reasons. First, the distributor is assumed to
shift to another factory directly after it realizes, in the case of NRIS, or get informed, in the case of RIS, about the
problem. Second, the model only considers the inventory and the backorder in the cost function. It has to be stated
that considering more complicated cost functions, including factors, such as, losing customers or opportunity cost, is
expected to lead to different results (see further research below).
3.1.3 Influence of Breakdown Repetition
This experiment investigates the influence of the BDR on the overall SC cost. Assuming that the BDD is 4 weeks,
Figure 4 illustrates the SC average cost when the BD is repeated up to five times in the two cases of NRIS and RIS.
The BDs are planned not to intersect as two intersected BDs can be simply considered as a single long BD.
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400
350
SC average cost
300
250 NRIS
200
RIS
150
100
50
0
0 1 2 3 4 5 6
Number of BDs
Figure 4: SC Average Cost under Different Number of BDs in Both Cases of NRIS and RIS
The results indicate a linear relationship between the number of BDs and the SC average cost in both cases of NRIS
and RIS. This is because each BD has a fixed cost; however, the cost is different in the case of NRIS from the case of
RIS as the slopes of the lines indicate. This result is discussed further below.
3.1.4 Conclusion of the Preliminary Experiments
Both of the breakdown time and duration have shown no influence on the results. Accordingly, in the experiments
below, a breakdown with a fixed week and duration is used. In contrast, the breakdown repetition has a positive
linear relationship with the SC cost. However, the analysis of a single breakdown is applicable to many breakdowns;
that is, the results of a single breakdown can be scaled up for any number of breakdowns. Therefore, the analysis
below focuses on a single breakdown; however, the results of a number of breakdowns are reported and discussed at
the end.
3.2 Scenario 1: The Case of NRIS
According to this scenario, a sudden BD occurs at the main factory (F1), but F1 does not notify the distributor with
the problem. Therefore, the distributor only realizes that a problem has occurred only when no shipment is received.
At this moment, having known nothing about the problem, the distributor decides to switch to the second factory
(F2).
Since the LT is assumed to be three weeks, there will be a three-week delay until the distributor receives the
shipment from F2. During this period, the backorder accumulates for the SC agents. The problem starts to solve only
when the distributor receives the shipment from F2 and then passes it to the wholesaler, from which to the retailer
and finally to the customer.
Figure 5 and Figure 6 illustrate, respectively, the agents placed order and backorder in the case of a single sudden BD.
The BD occurring at F1 starts at week 30 and lasts for 5 weeks; this is denoted by BD (30, 5).
35
30
placed orders (units)
25 Retailer
Wholesaler
20
Distributor
15
Factory 1
10 Factory 2
5
0
25 28 31 34 37 40 43 46 49
Weeks
Figure 5: Agents Placed Orders with a Factory BD, BD (30, 5), in the Case of NRIS
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30
25
backorders 20 Retailer
Wholesaler
15
Distributor
10
Factory 1
5
0
25 28 31 34 37 40 43 46 49
weeks
Figure 6: Agents Backorders with a Factory BD, BD (30, 5), in the Case of NRIS
Table 1 includes detailed information about the distributor main variables since the BD starts at week 30 and until the
problem is resolved at week 38. As shown in the table, although the sudden BD in F1 occurs at week 30, the
distributor continues to receive shipments from it at week 30 and 31. These are actually the shipments sent at week
28 and week 29 due to the shipping LT. At week 32, the distributor receives no shipment from F1 and only at this
moment, it realizes that some problem has occurred to the factory.
Having known nothing about the nature of the problem, the distributor decides to shift to F2. Since the weekly
demand is eight units and the LT is three weeks, the distributor needs to order (weekly demand × (1+LT) = 32) from
F2. This amount is used to cover the backorder that is expected to accumulate at weeks 32, 33, and 34, during which
the distributor does not receive any shipments. Backorder accumulation of the SC agents is illustrated in Figure 6. In
this scenario, the distributor is assumed to shift back to its original supplier, F1, immediately after the end of the
breakdown, week 35 in this case. This is actually assumed to enable a systematic study for a repetitive BD at F1 as
discussed above.
Incoming Shipment Outgoing Placed Order
Week Backorder Demand
From F1 From F2 Shipment To F1 To F2
30 0 8 8 - 8 8 -
31 0 8 8 - 8 8 -
32 8 8 - - - - 32
33 16 16 - - - - 8
34 24 24 - - - - 8
35 0 32 - 32 32 8 -
36 0 8 - 8 8 8 -
37 0 8 - 8 8 8 -
38 0 8 8 - 8 8 -
Table 1: Distributor Data with a Factory BD, BD (30, 5), in the Case of NRIS
3.3 Scenario 2: The Case of RIS
In this scenario, F1 decides to share the sudden BD information with the distributor immediately after it occurs. This
enables the distributor to directly, at the stoppage week, start contact with F2 and hence minimize the delay period
from three weeks, representing the LT, as in the case of NRIS, to only one week, representing the ordering LT. Figure
7 and Figure 8 illustrate, respectively, the agents placed order and backorder when a sudden BD (30, 5) occurs at F1
with the RIS applied.
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placed orders (units)
15 Retailer
Wholesaler
10 Distributor
Factory 1
5 Factory 2
0
25 28 31 34 37 40 43 46 49
weeks
Figure 7: Agents Placed Orders with Factory BD, BD (30, 5), in the Case of RIS
10
8
Retailer
backorders
6 Wholesaler
4 Distributor
Factory 1
2
0
25 28 31 34 37 40 43 46 49
weeks
Figure 8: Agents Backorders with Factory BD, BD (30, 5), in the Case of RIS
Table 2 includes detailed information about the distributor main variables since the BD starts at week 30 and until the
problem is resolved at week 38. F1 informs the distributor that a BD occurs at week 30 and will last for 5 weeks. At
week 30, the distributor places an order of 16 units, for covering the backorder and the order of week 32 during
which the distributor receives no shipment from either factory. The distributor keeps directing its order to F2 until F1
gets back to work. At week 35, the distributor sends its order to F1, to be received at week 38. During this period, the
distributor continues receiving shipments from F2 as shown in the table.
Incoming Shipment Outgoing Placed Order
Week Backorder Demand
From F1 From F2 Shipment To F1 To F2
30 0 8 8 - 8 - 16
31 0 8 8 - 8 - 8
32 8 8 - - - - 8
33 0 16 - 16 16 - 8
34 0 8 - 8 8 - 8
35 0 8 - 8 8 8 -
36 0 8 - 8 8 8 -
37 0 8 - 8 8 8 -
38 0 8 8 - 8 8 -
Table 2: Distributor Data with a Factory BD, BD (30, 5), in the Case of RIS
3.4 Contrasting the Results
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Table 3 contrasts the cost of each agent, under a single BD (30, 5), in the case of NRIS with the case of RIS. The SC
average cost in both cases is also reported. The results show that all the SC agents get benefited from the RIS with an
obvious preference to the upstream agents. The factory, in particular, is the most benefited agent from sharing the
information. The whole SC average cost is reduced by 26.92% (see Figure 9).
Average Cost
SC Agent NRIS RIS Reduction in Cost
Retailer 228 188 17.54%
Wholesaler 204 164 19.61%
Distributor 144 104 27.78%
Factory 1 48 0 100%
SC 156 114 26.92%
Table 3: Agents Costs with Factory BD, BD (30, 5), in Both Cases of NRIS and RIS
250
200
150 NRIS
100 RIS
50
0
Retailer WholeSaler Distributer Factory
Figure 9: Agents Costs with Factory BD, BD (30, 5), in Both Cases of NRIS and RIS
As discussed above, the number of breakdowns has a positive linear relationship with the SC cost. Table 4 contrasts
the SC average cost in the NRIS case with the RIS case under different BD repetitions: BDR ∈{1, 2, 3, 4, and 5}.
The results show that the more the repetition of the BD is, the larger the significance of the RIS on the SC cost
reduction appears to be. For example, in contrast to the case of a single breakdown in which the RIS achieves about
26% reduction in cost, with 5 breakdowns the RIS reduces the cost with about 60%.
SC Average Cost
BD Repetition NRIS RIS % Reduction Due to RIS
1 156 114 26.92
2 204 120 41.18
3 252 126 50
4 300 132 56
5 348 138 60.34
Table 4: SC Average Cost under Different Number of BDs in Both Cases of NRIS and RIS
4. Conclusion and Further Research
The results above provide us with valuable insights into the RIS mechanism. First, the results stress the significance
of the RIS in alleviating a factory disruption problem. In addition, the analysis shows that the RIS significance is
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getting larger with the increase of the problem frequency. Despite the possible confidentiality of the disruption
problem to the factory agent, the results show that the factory will be the most benefited agent, in terms of the cost
reduction, if the disruption piece of information is shared. All that the factory needs to reveal about the problem is
announcing its existence and transmitting the length of the closing period to the distributor. Despite it is not the
problem initiator, the distributor is the agent that needs to take an action to save the SC by shifting to another factory.
Although the shifting cost is not included in the model, the distributor has to pay it whether the information is shared
or not, but the sooner is better. The distributor is also shown as the second most benefited agent from sharing the
information. RIS also helps in reducing the cost of the retailer and the wholesaler. In case the shifting cost is higher
than the distributor can afford, the results indicate that all the SC agents might contribute in some way in the shifting
cost as long as they all get benefited.
A number of cases are to be considered in our further research. First, considering more complicated cost functions,
including factors, such as, losing customers or opportunity cost, is underway. This type of functions is expected to
lead to different results. Second, a reliability factor will be included in the model to reflect the level of trust in the
factories based on their breakdown frequencies and whether the factory shares the information with the downstream
agents. In addition, sharing planned shutdown information is to be investigated. In this type of disruption, the factory
knows that it will be closed long enough before the shutdown. The factory assumptions of the unlimited production
capacity and the unlimited supply of the raw material are relaxed to investigate the behavior of the SC and the
backorder accumulation due to the different types of shutdown.
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