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Operations and Supply Chain Management Commons™

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2009

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Articles 1 - 30 of 39

Full-Text Articles in Operations and Supply Chain Management

Managing Supply Uncertainty With An Information Market, Zhiling Guo, Fang Fang, Andrew B. Whinston Dec 2009

Managing Supply Uncertainty With An Information Market, Zhiling Guo, Fang Fang, Andrew B. Whinston

Research Collection School Of Computing and Information Systems

We propose a market-based information aggregation mechanism to manage the supply side uncertainty in the supply chain. In our analytical model, a simple supply chain consists of a group of retailers who order a homogeneous product from two suppliers. The two suppliers differ in their ability to fulfill orders – one always delivers orders and the other fulfills orders probabilistically. We model the supply chain decisions as a Stackelberg game where the supplier who has uncertain reliability decides a wholesale price before the retailers who independently receive signals about the supplier’s reliability determine their sourcing strategies. We then propose an …

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Cow Preference And Usage Of Free Stalls Compared With An Open Pack Area, J. A. Fregonesi, M. A. G. Von Keyserlingk, D. M. Weary Nov 2009

Cow Preference And Usage Of Free Stalls Compared With An Open Pack Area, J. A. Fregonesi, M. A. G. Von Keyserlingk, D. M. Weary

Housing and Confinement of Farm Animals Collection

Free-stall housing systems are designed to provide a comfortable and hygienic lying area, but some aspects of stall design may restrict usage by cows. The aim of this study was to compare free-stall housing with a comparable lying area (open pack) without stall partitions. We predicted that cows would spend more time lying down and standing in the bedded area when provided access to an open pack than when in free stalls. We also predicted that cows would spend less time standing outside of the lying area and less time perching with the front 2 hooves in the lying area …

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Prevalence And Risk Factors For Skin Lesions On Legs Of Dairy Cattle Housed In Freestalls In Norway, C. Kielland, L. E. Ruud, A. J. Zanella, O. Østerås Nov 2009

Prevalence And Risk Factors For Skin Lesions On Legs Of Dairy Cattle Housed In Freestalls In Norway, C. Kielland, L. E. Ruud, A. J. Zanella, O. Østerås

Housing and Confinement of Farm Animals Collection

Appropriate indoor housing facilities for dairy cattle promote improved animal welfare. Skin alterations are an indicator of dysfunctional housing. The purpose was to determine the relationship between different housing design and skin lesions, hence providing farmers more insight into how to reduce the occurrence of lesions. A cross-sectional study was conducted on 2,335 animals in 232 Norwegian freestall-housed dairy cattle from September 2006 to June 2007. A model was established to investigate risk factors related to the presence of lesions including hair loss, swelling, and wounds on the legs of dairy cattle. Separate models were developed to investigate risk factors …

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Tls Newsletter Volume 2, Edition 3. November, 2009, Unf Transportation And Logistics Society Nov 2009

Tls Newsletter Volume 2, Edition 3. November, 2009, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: In the Know--What is Logistics? Behind the Scenes--Propeller Club BBQ. Next TLS meeting on November 4th. FYI: Transportation and Logistics Program Exhibit. Important Fall Dates. Professional Spotlight on Randy Lewis. Get to Know TLS Social Director Ben Richards

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Tls Newsletter Volume 2, Edition 2. October, 2009, Unf Transportation And Logistics Society Oct 2009

Tls Newsletter Volume 2, Edition 2. October, 2009, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: In the Know--Thank you letters. Join us for the Next TLS meeting on Wednesday October 7th. FYI: Why go on Tours? Important Fall Dates. Professional Spotlight--WTS (Women in Transportation Seminars). Get to Know TLS Treasurer Kyle Groothuis

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Lying Behavior: Assessing Within- And Betweenherd Variation In Free-Stall-Housed Dairy Cows, K. Ito, D. M. Weary, M. A. G. Von Keyserlingk Sep 2009

Lying Behavior: Assessing Within- And Betweenherd Variation In Free-Stall-Housed Dairy Cows, K. Ito, D. M. Weary, M. A. G. Von Keyserlingk

Housing and Confinement of Farm Animals Collection

One of the most important design criteria for dairy cow housing is access to a comfortable lying area. Behaviors such as the time cows spend lying down and how often they lie down can be used to evaluate the quality of stalls; however, assessing lying behavior on farms can be challenging. Indices such as the cow comfort index (CCI) and stall use index (SUI) have been widely used in on-farm assessments. The aims were to establish reliable sampling and recording methods for measuring lying behavior, to evaluate the adequacy of the CCI and SUI as estimates of lying behavior, and …

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Tls Newsletter Volume 2, Edition 1. September 2009, Unf Transportation And Logistics Society Sep 2009

Tls Newsletter Volume 2, Edition 1. September 2009, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: In the Know--Why Join TLS? Next TLS Meeting Wednesday September 9th. TLS Membership Join Today. FYI: Fall Career Day. Important Fall Dates. Professional Spotlight: The Propeller club of the United States Port of Jacksonville. Get to Know TLS President Toby Robin.

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How To Optimize Knowledge Sharing In A Factory Network, Arnoud De Meyer, Ann Vereecke Sep 2009

How To Optimize Knowledge Sharing In A Factory Network, Arnoud De Meyer, Ann Vereecke

Research Collection Lee Kong Chian School Of Business

Designing a manufacturing network entails devising and managing flows of innovation and know-how—not just determining what to produce and where—and organizing the resulting logistics flows.

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Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary Aug 2009

Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary

Housing and Confinement of Farm Animals Collection

The aim of the current study was to assess if cows preferred pasture or indoor housing, and how diurnal and environmental factors affected this preference. Lactating dairy cows (n = 5 groups, each containing 5 cows) were sequentially housed either in a free-stall barn on pasture, or given the choice between the 2 environments. Each group was tested 3 times under each condition, for a total of 21 d, to assess the effects of varying climatic conditions (outdoor temperature ranged from 9.9 to 28.2°C and daily rainfall from 0 to 65 mm/d over the course of the experiment). When provided …

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Preference For Pasture Versus Freestall Housing By Dairy Cattle When Stall Availability Indoors Is Reduced, A. C. Falk, D. M. Weary, C. Winckler, M. A. G. Von Keyserlingk Aug 2009

Preference For Pasture Versus Freestall Housing By Dairy Cattle When Stall Availability Indoors Is Reduced, A. C. Falk, D. M. Weary, C. Winckler, M. A. G. Von Keyserlingk

Housing and Confinement of Farm Animals Collection

Providing cattle with access to pasture has been shown to yield benefits, including access to more space, fewer agonistic interactions, better air quality, and the ability to perform a greater range of normal behaviors. Preference for pasture appears to depend on several parameters, including weather conditions and availability of shade. The primary aim of this study was to evaluate the preference for pasture versus inside a freestall barn with variable stocking densities at the stalls. We also investigated the effect of temperature-humidity index (THI) and precipitation on this preference. Overall, cows spent on average 13.7 ± 2.6 h/d (mean ± …

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Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary Aug 2009

Preference And Usage Of Pasture Versus Free-Stall Housing By Lactating Dairy Cattle, A. L. Legrand, M. A. G. Von Keyserlingk, D. M. Weary

Housing and Confinement of Farm Animals Collection

The aim of the current study was to assess if cows preferred pasture or indoor housing, and how diurnal and environmental factors affected this preference. Lactating dairy cows (n = 5 groups, each containing 5 cows) were sequentially housed either in a free-stall barn on pasture, or given the choice between the 2 environments. Each group was tested 3 times under each condition, for a total of 21 d, to assess the effects of varying climatic conditions (outdoor temperature ranged from 9.9 to 28.2°C and daily rainfall from 0 to 65 mm/d over the course of the experiment). When provided …

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The Stall-Design Paradox: Neck Rails Increase Lameness But Improve Udder And Stall Hygiene, F. Bernardi, J. A. Fregonesi, C. Winckler, D. M. Veira, M. A. G. Von Keyserlingk, D. M. Weary Jul 2009

The Stall-Design Paradox: Neck Rails Increase Lameness But Improve Udder And Stall Hygiene, F. Bernardi, J. A. Fregonesi, C. Winckler, D. M. Veira, M. A. G. Von Keyserlingk, D. M. Weary

Housing and Confinement of Farm Animals Collection

Housing conditions for dairy cows are thought to af-fect lameness, but almost no experimental work has addressed this link. The aim was to assess the effect of one feature of free-stall design, the position of the neck rail, testing the prediction that cows will be more likely to become lame if using pens with the neck rail positioned such that it prevents standing fully inside the stall. Cows (n = 32) were housed in 8 pens. Treat-ments were tested using a crossover design; treatments were allocated alternately to pens at the beginning of the experiment and switched halfway through the …

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Cow Comfort In Tie-Stalls: Increased Depth Of Shavings Or Straw Bedding Increases Lying Time, C. B. Tucker, D. M. Weary, M. A. G. Von Keyserlingk, K. A. Beauchemin Jun 2009

Cow Comfort In Tie-Stalls: Increased Depth Of Shavings Or Straw Bedding Increases Lying Time, C. B. Tucker, D. M. Weary, M. A. G. Von Keyserlingk, K. A. Beauchemin

Housing and Confinement of Farm Animals Collection

Over half of US dairy operations use tie-stalls, but these farming systems have received relatively little research attention in terms of stall design and management. The current study tested the effects of the amount of 2 bedding materials, straw and shavings, on dairy cattle lying behavior. The effects of 4 levels of shavings, 3, 9, 15, and 24 kg/stall (experiment 1, n = 12), and high and low levels of straw in 2 separate experiments: 1, 3, 5, and 7 kg/stall (experiment 2, n = 12) and 0.5, 1, 2, and 3 kg/stall (experiment 3, n = 12) were …

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A Case Of Voip Implementation Using Open Source, Russell J. Roysden Jun 2009

A Case Of Voip Implementation Using Open Source, Russell J. Roysden

ISSCM Faculty Publications

Voice over Internet Protocol (VoIP) has progressed from a limited, untested technology to a feature-rich service that continues to find a place in all types of businesses. Companies such as Vonage and Skype have built successful business models based on VoIP services, and major telecommunications companies such as AT&T and Time Warner have followed suit with bundled offerings of phone, cable, and Internet services. Research has suggested that the Small-to-Medium Business (SMB) marketplace is quickly moving towards VoIP for productivity and efficiency benefits, convenience, and cost savings (Frost & Sullivan Company, 2006).

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Towards A Single European Sky, Yael Gruksha-Cockayne, Bert De Reyck Jun 2009

Towards A Single European Sky, Yael Gruksha-Cockayne, Bert De Reyck

Research Collection Lee Kong Chian School Of Business

We describe an integrated decision-making framework and model that we developed to aid EUROCONTROL, the European air traffic management organization, in its vital role of constructing a single unified European sky. Combining multicriteria decision analysis with large-scale optimization methods, such as integer programming and column generation using branch and price, our model facilitates the process by which the numerous European aviation stakeholders evaluate and select technological enhancements to the European air traffic management system. We consider multiple objectives and potential disagreements by stakeholders regarding the impact of proposed system enhancements and allow for different priorities for each key performance area. …

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Modelling Reconfigurable Manufacturing Systems With Coloured Timed Petri Nets, Lianfeng Zhang, Brian Rodrigues Jun 2009

Modelling Reconfigurable Manufacturing Systems With Coloured Timed Petri Nets, Lianfeng Zhang, Brian Rodrigues

Research Collection Lee Kong Chian School Of Business

Reconfigurable manufacturing systems (RMSs) have been acknowledged as a promising means of providing manufacturing companies with the required production capacities and capabilities. This is accomplished through reconfiguring system elements over time for a diverse set of individualised products often required in small quantities and with short delivery lead times. Recognising the importance of dynamic modelling and visualisation in decision-making support in RMSs and the limitations of current research, we propose in this paper to model RMSs with Petri net (PN) techniques with focus on the process of reconfiguring system elements while considering constraints and system performance. In view of the …

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Information Sharing And Strategic Signaling In Supply Chains, Robert J. Kauffman, Hamid Mohtadi Jun 2009

Information Sharing And Strategic Signaling In Supply Chains, Robert J. Kauffman, Hamid Mohtadi

Research Collection School Of Computing and Information Systems

Information sharing in procurement occurs in rich and varied industry contexts in which managerial decisions are made and organizational strategy is formulated. We explore how information sharing ought to work in procurement contexts that involve investments in inter-organizational information systems (IOS) and collaborative planning, forecasting and replenishment (CPFR) practices. How and under what circumstances does a firm that plays the role of a supply chain buyer decide to share information on key variables, such as point-of-sale consumer demand data with its supplier, up the supply chain? This is a key issue that crosses the boundary between supply chain management and …

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Deterministic Chaos In A Model Of Discrete Manufacturing, John J. Iii Bartholdi, Donald D. Eisenstein, Yun Fong Lim Jun 2009

Deterministic Chaos In A Model Of Discrete Manufacturing, John J. Iii Bartholdi, Donald D. Eisenstein, Yun Fong Lim

Research Collection Lee Kong Chian School Of Business

A natural extension of the bucket brigade model of manufacturing is capable of chaotic behavior in which the product intercompletion times are, in effect, random, even though the model is completely deterministic. This is, we believe, the first proven instance of chaos in discrete manufacturing. Chaotic behavior represents a new challenge to the traditional tools of engineering management to reduce variability in production lines. Fortunately, if configured correctly, a bucket brigade assembly line can avoid such pathologies.

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Oracle E-Business Suite In The Enterprise Systems Course At The Raj Soin College Of Business, Anand Jeyaraj May 2009

Oracle E-Business Suite In The Enterprise Systems Course At The Raj Soin College Of Business, Anand Jeyaraj

ISSCM Faculty Publications

Enterprise Resource Planning (ERP) systems, or simply enterprise systems, are enterprise-wide information systems that enable core activities underlying business processes in organizations. Enterprise systems incorporate several standalone information systems ranging from marketing, purchasing, sales, distribution, scheduling, human resources, customer relationship, financials and decision support through a single integrated central database that captures data relating to the various activities and business processes in organizations.

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Assessing Lameness In Cows Kept In Tie-Stalls, K. A. Leach, S. Dippel, J. Huber, S. March, C. Winckler, H. R. Whay Apr 2009

Assessing Lameness In Cows Kept In Tie-Stalls, K. A. Leach, S. Dippel, J. Huber, S. March, C. Winckler, H. R. Whay

Housing and Confinement of Farm Animals Collection

Identifying lame cows and quantifying the prevalence of lameness are important elements of cattle welfare assessment that are generally achieved by methods involving observations of each animal walking. There is no published method for assessing lameness in cows confined in tie-stalls. The objective of this study (carried out within the European Commission’s Welfare Quality® project) was to develop a suitable method and validate it for lameness detection against a published locomotion score. A series of indicators of lameness visible in tied cows was formalized into a stall assessment protocol. This was validated against a traditional locomotion score and tested for …

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Undergraduate Course On Business Intelligence At The Wright State University Raj Soin College Of Business, Anand Jeyaraj Apr 2009

Undergraduate Course On Business Intelligence At The Wright State University Raj Soin College Of Business, Anand Jeyaraj

ISSCM Faculty Publications

Business intelligence (BI) tools enable senior, middle, and line managers to better understand their current operations and determine future strategies. There is a growing recognition among business professionals that the practices relating to BI are crucial for evaluating organizational performance, charting new directions, and everyday decision-making. According to Ziff Davis Enterprise, BI experts are ranked as the #1 job in the information technology sector for 2009.

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Tls Newsletter Volume 1, Edition 4. April, 2009, Unf Transportation And Logistics Society Apr 2009

Tls Newsletter Volume 1, Edition 4. April, 2009, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside this Newsletter: In the Know--a Graduate Poll. An overview of the school year. Upcoming events. For your Information-UNF Logistics Case competition held on February 13th. Professional Spotlight on TLS adviser Lynn Brown and get to know the TLS Vice President Lauren Parrish.

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Tls Newsletter Volume 1, Edition 3. March 2, 2009, Unf Transportation And Logistics Society Mar 2009

Tls Newsletter Volume 1, Edition 3. March 2, 2009, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: In the Know--Blutz about LITS. Professional Spotlight on Council of Supply Chain Management Professionals. FYI: Relay for Life a Cure in Motion. Important Spring dates. Meet the Newsletter Committee. Gent to Know TLS Secretary Michael Bivins.

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Or Practice—Efficient Short-Term Allocation And Reallocation Of Patients To Floors Of A Hospital During Demand Surges, Steven M. Thompson, Manuel Nunez, Robert Garfinkel, Matthew D. Dean Mar 2009

Or Practice—Efficient Short-Term Allocation And Reallocation Of Patients To Floors Of A Hospital During Demand Surges, Steven M. Thompson, Manuel Nunez, Robert Garfinkel, Matthew D. Dean

Management Faculty Publications

Many hospitals face the problem of insufficient capacity to meet demand for inpatient beds, especially during demand surges. This results in quality degradation of patient care due to large delays from admission time to the hospital until arrival at a floor. In addition, there is loss of revenue because of the inability to provide service to potential patients. A solution to the problem is to proactively transfer patients between floors in anticipation of a demand surge. Optimal reallocation poses an extraordinarily complex problem that can be modeled as a finite-horizon Markov decision process. Based on the optimization model, a decision-support …

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Document Sql (Dsql) - An Accessible Yet Comprehensive Ad-Hoc Querying Frontend For Xquery, Arijit Sengupta Mar 2009

Document Sql (Dsql) - An Accessible Yet Comprehensive Ad-Hoc Querying Frontend For Xquery, Arijit Sengupta

ISSCM Faculty Publications

This article presents a declarative query language, Document SQL (DSQL) that has the same look and feel as SQL and was designed by updating the semantics of SQL operations in the structured document domain. At the same time, DSQL was designed such that all queries written in it have equivalent counterparts in XQuery. Thus, by using such a language, users can take advantage of their existing SQL knowledge when writing ad-hoc queries without losing the expressive power of XQuery.

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Tls Newsletter Volume 1, Edition 2. February 2, 2009, Unf Transportation And Logistics Society Feb 2009

Tls Newsletter Volume 1, Edition 2. February 2, 2009, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside this newsletter: In the Know dress for success--What to wear to Career day. Professional Spotlight on Jaxport Executive Director Rick Ferrin. FYI--Panel on How to Get Hired on February 11, 2009. Important Spring dates. New Organization Forming--Introduction APICS Student Chapter. Get to Know TLS President Randy Ancayan

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Tls Newsletter Volume 1, Issue 1. January 14, 2009, Unf Transportation And Logistics Society Jan 2009

Tls Newsletter Volume 1, Issue 1. January 14, 2009, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: In the Know--Students Raise $1,500. Professional Spotlight: The Propeller Club of Jacksonville. FYI--CTL Professional Certification. Important Spring Dates. Get to Know TLS Recruitment Director Maria Lugovets

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Information Sharing With Suppliers To Improve Mass Customization Capability: A Trust Perspective, Kun Liao, Zhongming Ma, Cen-Tsong Lin Jan 2009

Information Sharing With Suppliers To Improve Mass Customization Capability: A Trust Perspective, Kun Liao, Zhongming Ma, Cen-Tsong Lin

All Faculty Scholarship for the College of Business

Trust is essential for business relationships within a supply chain. On the basis of over 200 responses from suppliers in the U.S. and China, this study empirically tests the relationship between trust and manufacturer-supplier information sharing. High trust can lead to frequent information sharing between suppliers and manufacturers. Frequent information sharing causes high mass customization capabilities. The moderating effect of country culture is also found for the relationship between trust and financial information sharing.

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Trust-Driven Joint Operations Practices To Achieve Mass Customization: A Comparative Study For U.S., Chinese And Japanese Companies, Kun Liao, Thomas W. Sharkey, Mark A. Vonderembse, T. S. Ragu-Nathan Jan 2009

Trust-Driven Joint Operations Practices To Achieve Mass Customization: A Comparative Study For U.S., Chinese And Japanese Companies, Kun Liao, Thomas W. Sharkey, Mark A. Vonderembse, T. S. Ragu-Nathan

All Faculty Scholarship for the College of Business

This study builds a model of trust, based on joint operational activities and mass customization using theories of social capital and the resource-based view of the firm. Based on 208 responses from suppliers in the U.S. and China, this study empirically supports the notion that trust positively drives manufacturer-supplier activities in operations. It also supports the claim that joint operations activities contribute to mass customization capabilities in a significant way. Moreover, the level of trust and the degree of joint activities are different for the four types of suppliers used in the study: U.S. brands produced in North America, Japanese …

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Choosing And Using A Co-Packer, Pamela L. Brady, Steve Seideman, Justin R. Morris Jan 2009

Choosing And Using A Co-Packer, Pamela L. Brady, Steve Seideman, Justin R. Morris

Research Reports and Research Bulletins

Co-packing, also known as contract packaging, is when a company contracts with another company to manufacture and package foods that the original company will sell. Products on the market that have been co-packed range from nationally known brands to those sold under private labels. The use of co-packers has become extremely popular with entrepreneurs who have a product idea but lack the $100,000 or more needed to set up a manufacturing facility to produce the product. In addition, many entrepreneurs starting a foods business find that, in today’s market conditions, greater profits are achieved through sales and marketing innovations than …

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