Operations and Supply Chain Management Commons^™

การวิเคราะห์การลงทุนในประตูกั้นน้ำเพื่อการขนส่งสินค้าในแม่น้ำเจ้าพระยาและแม่น้ำป่าสัก, วาฤทธิ์ แซ่ลิ่ม

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจัยนี้ได้ทำการศึกษาเพื่อเพิ่มศักยภาพของการขนส่งสินค้าทางน้ำโดยเฉพาะในแม่น้ำเจ้าพระยาและแม่น้ำป่าสักซึ่งเป็นเส้นทางหลักของการขนส่งสินค้าทางน้ำในประเทศ โดยทำการรวบรวมข้อมูลการขนส่งสินค้าทางน้ำประกอบด้วยประเภทสินค้า ปริมาณสินค้า เส้นทางการขนส่งสินค้า ข้อจำกัดทางกายภาพของสะพานที่แม่น้ำเจ้าพระยาและแม่น้ำป่าสักไหลผ่านจากงานวิจัยต่างๆที่เกี่ยวข้องและการสัมภาษณ์เชิงลึกจากกลุ่มตัวอย่าง โดยใช้แบบสอบถามเป็นเครื่องมือในการวิเคราะห์ถึงรูปแบบการขนส่งสินค้า ปัญหาและอุปสรรคในการขนส่งสินค้าทางน้ำในปัจจุบัน จากการศึกษาพบว่าปัญหาหลักคือการเดินเรือผ่านสะพานที่มีระดับความสูงจากระดับน้ำต่ำ (Air Draft) โดยสะพานที่ส่งผลกระทบต่อการขนส่งสินค้ามีทั้งหมด 8 สะพาน โดยสะพานนวลฉวีเป็นสะพานที่ส่งผลต่อการขนส่งสินค้าทางน้ำมากที่สุด โครงการประตูกั้นน้ำจึงเป็นทางเลือกที่สำคัญที่ต่างประเทศนำมาใช้เพื่อเแก้ไขปัญหาดังกล่าวและเพิ่มความสามารถในการขนส่งสินค้า โดยนำทฤษฏีการตัดสินใจการลงทุนมาเป็นเครื่องมือวิเคราะห์และประเมินผลตอบแทนในการลงทุน ซึ่งมีต้นทุนก่อสร้าง อัตราคิดลด อายุโครงการ และปริมาณสินค้า เป็นปัจจัยหลักในการวิเคราะห์ค่าความอ่อนไหวของโครงการ ผลการวิจัยพบว่ากรณีที่ต้องการสร้างโครงการประตูกั้นน้ำเฉพาะจุดสะพานนวลฉวีที่มีต้นทุนก่อสร้าง 500,460,000 บาท โครงการให้ค่ามูลค่าปัจจุบันสุทธิ (NPV), อัตราผลตอบแทนภายในโครงการ (IRR), อัตราผลตอบแทนต่อค่าใช้จ่าย (B/C Ratio) เป็นบวกในทุกกรณีและในทุกอัตราคิดลด แต่หากสร้างทั้งหมด 8 จุดตรงสะพานที่ส่งผลกระทบทั้งหมด ด้วยมูลค่าก่อสร้าง 4,003,680,000 บาท อัตราคิดลดต้องต่ำกว่า 5% โดยปริมาณสินค้าต้องเพิ่มขึ้นปีละ 8% โครงการจึงจะเหมาะสมและควรลงทุน

On Substitutability And Complementarity In Discrete Choice Models, Guiyun Feng, Xiaobo Li, Zizhuo Wang

Research Collection Lee Kong Chian School Of Business

In this paper, we propose the concepts of substitutability and complementarity in discrete choice models. These concepts concern whether the choice probability of one alternative in a choice model increases or decreases with the utility of another alternative, and they play important roles in capturing certain practical choice patterns, such as the halo effect. We study conditions on discrete choice models that will lead to substitutability and complementarity. We also present ways of constructing choice models that exhibit complementary property.

Evaluation Of Procurement Scenarios In One-Dimensional Cutting Stock Problem With A Random Demand Mix, Hüseyin Sarper, Nebojsa I. Jaksic

Electrical & Computer Engineering Faculty Publications

The one-dimensional cutting stock problem describes the problem of cutting standard length stock material into various specified sizes while minimizing the material wasted (the remnant or drop as manufacturing terms). This computationally complex optimization problem has many manufacturing applications. One-dimensional cutting stock problems arise in many domains such as metal, paper, textile, and wood. To solve it, the problem is formulated as an integer linear model first, and then solved using a common optimizer software. This paper revisits the stochastic version of the problem and proposes a priority-based goal programming approach. Monte Carlo simulation is used to simulate several likely …

Isscm Newsletter, Vol. 22, December 19, 2017, Raj Soin College Of Business, Wright State University

ISSCM Newsletters

A nine page newsletter from the Department of Information Systems and Supply Chain Management in the Raj Soin College of Business at Wright State University.

Enabling Context-Based Learning With Kportal Webspace Technology, Anand Jeyaraj, Vijay Sethi, Vikram Sethi, Kevin P. Duffy, Berkwood M. Farmer

Management Information Systems Faculty Publications

Recognizing the importance of context-based learning and the general lack of technology applications in the design and development of the ideal and formal curricula, this paper describes an experimental system at a large public university. The authors describe the creation of a contextual environment for introducing concepts related to information security to undergraduate business students using the KPortal (Knowledge Portals) webspace technology that supports dynamic content gathered from various sources automatically. The KPortal webspace rated highly on the various attributes of effective contexts and the characteristics of technologies that enable context-based learning. The flexibility provided by the webspace permitted the …

A Comparative Analysis Of Three Major Transfer Airports In Northeast Asia Focusing On Incheon International Airport Using A Conjoint Analysis, Tae Won Chung, Yong Joo Lee, Hyun Mi Jang

Finance and Supply Chain Faculty Scholarship

Due mainly to the privatization and commercialization of airline companies and deregulation of the aviation rules, the demand for air transport has continuously been increasing. Airport authorities state that transfer passengers, who contribute to the large portion of the airports’ profits, are gaining much more importance, particularly in the Northeast Asia region where the air transport industry is very vital. Therefore, this study aims to investigate the competitiveness of IIA (Incheon International Airport) with other major airports located in Northeast Asia in passenger transfers made between Southeast Asia and China to North America using Conjoint Analysis. Results have indicated that …

Call Center Experience Optimization: A Case For A Virtual Predictive Queue, William Pugh

Theses & Dissertations

The evolution of the call center into contact centers and the growth of their use in providing customer-facing service by many companies has brought considerable capabilities in maintaining customer relationships but it also has brought challenges in providing quality service when call volumes are high. Limited in their ability to provide service at all times to all customers, companies are forced to balance the costs associated with hiring more customer service representatives and the quality of service provided by a fewer number. A primary challenge when there are not enough customer service representatives to engage the volume of callers in …

Department Of Information Systems & Supply Chain Management Profile, Raj Soin College Of Business, Wright State University

ISSCM Annual Reports

A three page profile of the Department of Information Systems and Supply Chain Management in the Raj Soin College of Business at Wright State University.

Emerging Research Institutions' Technology Transfer Supply Chain Networks' Sustainability Budget Resource Planning Tool Development, Clovia Hamilton

Winthrop Faculty and Staff Publications

Emerging Research Institution (ERls) can benefit from patent licensing revenues from the transfer f patented technologies into the commercial marketplace because these added revenues can help research institutions become more sustainable financially. However, many ERls struggle to succeed in technology transfer. This study describes the development of a university technology transfer supply chain network sustainability tool that private and public ERls can use to become more self-reliant financially. Historically black colleges and universities (HBCUs) are ERls and are used as a case study. HBCUs lag behind their peer non-HBCUs because historically they have been under-served and were originally established largely …

Capacity Management In Agricultural Commodity Processing And Application In The Palm Industry, Onur Boyabatli, Jason Quang Dang Nguyen, Tong Wang

Research Collection Lee Kong Chian School Of Business

This paper examines the capacity investment decisions of a processor that uses a commodity input to produce both a commodity output and a byproduct in the context of agricultural industries. We employ a multi-period model to study the optimal one-time processing and (output) storage capacity investment decisions---in addition to the periodic processing and inventory decisions---when both input and output spot prices as well as production yield are uncertain. We characterize the optimal decisions and perform sensitivity analysis to investigate how spot price uncertainty affects the processor's optimal capacity and profitability. Using a calibration based on the palm industry, we study …

Inventory Management Based On Target-Oriented Robust Optimization, Yun Fong Lim, Chen Wang

Research Collection Lee Kong Chian School Of Business

We propose a target-oriented robust optimization approach to solve a multi-product, multi-period inventory management problem subject to ordering capacity constraints. We assume the demand for each product in each period is characterized by an uncertainty set, which depends only on a reference value and the bounds of the demand. Our goal is to find an ordering policy that maximizes the sizes of all the uncertainty sets such that all demand realizations from the sets will result in a total cost lower than a pre-specified cost target. We prove that a static decision rule is optimal for an approximate formulation of …

Technical Note—On The Relation Between Several Discrete Choice Models, Guiyun Feng, Xiaobo Li, Zizhuo Wang

Research Collection Lee Kong Chian School Of Business

In this paper, we study the relationship between several well known classes of discrete choice models, i.e., the random utility model (RUM), the representative agent model (RAM), and the semiparametric choice model (SCM). Using a welfare-based model as an intermediate, we show that the RAM and the SCM are equivalent. Furthermore, we show that both models as well as the welfare-based model strictly subsume the RUM when there are three or more alternatives, while the four are equivalent when there are only two alternatives. Thus, this paper presents a complete picture of the relationship between these choice models.

The Interaction Between Operational Flexibility And Financial Flexibility, Onur Boyabatli, Tiecheng Leng

Research Collection Lee Kong Chian School Of Business

This paper examines the interaction between operational flexibility and financial flexibility in a multi-product business unit that makes operational decisions based on financial resources provided by its parent company (or headquarters). We capture operational flexibility through investment in flexible technology and financial flexibility through higher availability of financial resources. We consider the flexible-versus-dedicated technology choice and capacity investment decisions of a two-product business unit under demand uncertainty in the presence of budget constraints. The unit operates under a capital budget for financing the capacity investment, and an operating budget, which is uncertain in the capacity investment stage, for financing the …

Couples Sleeping Apart--Separate Master Bedrooms And The Impact On The Real Estate And Related Markets, John E. Crawford

Atlantic Marketing Journal

Sleeping is a fundamental individual human need. However, most adults fulfill this need by sleeping with a partner, a behavior particularly true for married couples. A trend of couples choosing to sleep apart has emerged in recent years. For reasons practical and personally beneficial or preferred, a growing number of couples are choosing to have a home with two master bedrooms--one for him and one for her, each furnished according to the needs and tastes of the partners. Thus, some homes are being built with two master bedrooms, others are being modified to have two master bedrooms, and new empty …

Isscm Newsletter, Vol. 21, November 17, 2017, Raj Soin College Of Business, Wright State University

ISSCM Newsletters

A nineteen page newsletter from the Department of Information Systems and Supply Chain Management in the Raj Soin College of Business at Wright State University.

From Rags To Riches: Following The East Asian Blueprint By Governments And Firms, Shantanu Bhattacharya

Asian Management Insights

What governments and firms should know before following the East Asian blueprint.

A New Way To Improve Logistics Efficiency And Aircraft-Onground Recovery, Katia Regina Goncalves, Erica Maria Dias Ferreira Cruz Grudzinski, Fabio Pinto, Carlos Alberto De Queiroz, Gilson Macedo Dos Santos

Graduate Student Works

The objective of this project was to bring more efficiency to logistics, improving time of Aircraft-on-Ground (AOG) recovery and developing possible saving for airlines operations. There proposed goal was to develop a system that would allow airlines to easily visualize an available space at the aircraft cargo bay on a desired flight and book its company materials (COMAT) on it, still respecting all appropriate regulation and the final availability of space.

This project was inspired by an existing system called MyIDTravel that allows jointed airline’s personnel to buy available tickets with low fares. The objective was to develop something similar …

Combinatorial Multi-Armed Bandit Problem With Probabilistically Triggered Arms: A Case With Bounded Regret, Omer Saritac, Cem Tekin

Research Collection Lee Kong Chian School Of Business

In this paper, we study the combinatorial multi-armed bandit problem (CMAB) with probabilistically triggered arms (PTAs). Under the assumption that the arm triggering probabilities (ATPs) are positive for all arms, we prove that a simple greedy policy, named greedy CMAB (G-CMAB), achieves bounded regret. This improves the result in previous work, which shows that the regret is O (log T) under no such assumption on the ATPs. Then, we numerically show that G-CMAB achieves bounded regret in a real-world movie recommendation problem, where the action corresponds to recommending a set of movies, arms correspond to the edges between movies and …

Contracts To Promote Optimal Use Of Optional Diagnostic Tests In Cancer Treatment, Salar Ghamat, Gregory S. Zaric, Hubert Pun

Business Publications

In this study, we examine performance-based payment contracts to promote the optimal use of an optional diagnostic test for newly diagnosed cancer patients. Our work is inspired by three trends: tremendous increases in the cost of new, advanced cancer drugs; development of new diagnostic tests to allow physicians to tailor treatment to patients; and changes in healthcare funding models that reward quality care. We model the interaction between two parties—a healthcare payer and an oncologist, in which the oncologist has private information about patients’ characteristics (adverse selection) and the payer does not know whether the oncologist takes the optimal course …

Creating The Context For Effective Culture Work, Matthew Berberich

River Cities Industrial and Organizational Psychology Conference

A culture that embraces change, responds quickly to changing needs and connects everyone at every level as business owners is an exciting future for companies and employees. In this culture leaders learn to unleash the unique potential in each individual to solve problems never solved before. The opportunity for positive impact goes far beyond our daily work. It spills into every area of our lives and in tangible ways impacts the world. Performance metrics and engagement only put you in line for this door to the future. The door can get locked when organizations become lulled into thinking “good-enough” by …