Currently it is very important for companies to maintain proper stock. The rhythm of life to which we are accustomed to every day, demands an immediate response to the intentions of consumer purchases. This requires having enough stock to answer to this situation, being prepared for quick increases in demand. On the other hand, maintaining …
Tag Archive: Operations Research
Mar
13
Mar
13
Assessing and mitigating risk in a design for supply chain problem
Industry leaders in todays global market strive for continuous improvement in order to remain competitive. One method used by firms for cutting costs and improving efficiency is Design for Supply Chain DFSC). The objective of this methodology is to design the supply chain in parallel to designing or redesigning a new product. Risk is an …
Mar
11
A Congestion Pricing Model to Handle “Day of Operations” Airport Capacity Reductions
The airline industry in the United States provides one of the major modes of transportation. It is a highly connected network used by over 712.6 million people in 2010 [FAA, 2011] and is the most common means of travel for origin-destination pairs of greater than 250 miles. In 2007, due to a high volume of …
Mar
11
Data mining techniques for prediction and classification in discrete data applications
The primary focus of this dissertation is to develop an optimization-based framework for classification and prediction in a variety of application areas. We specifically focused the testing of the framework on automated prediction of stock market trends and on computer-aided medical diagnosis. In order to tune the methods proposed as part of the framework, we …
Mar
10
Radio Resource Management in OFDMA-based Cellular Relay Networks
The main objective of next-generation wireless networks is to accommodate the increasing user demand and to achieve a ubiquitous high-data-rate coverage so that mobile broadband services comparable to those of the wirelines are realized in a cost-efficient manner. This ambitious objective however faces several technical challenges in the conventional cellular architecture, e.g., the large pathloss. …
Mar
10
Examining the Relationship Between Passenger Airline Aircraft Maintenance Outsourcing and Aircraft Safety
The problem addressed was the concern for aircraft safety rates as they relate to the rate of maintenance outsourcing. Data gathered from 14 passenger airlines: AirTran, Alaska, America West, American, Continental, Delta, Frontier, Hawaiian, JetBlue, Midwest, Northwest, Southwest, United, and USAir covered the years 1996 through 2008. A quantitative correlational design, utilizing Pearson’s correlation coefficient, …
Mar
10
Portfolio management for private and illiquid investments
The goal of this study is to provide a quantitative framework for modeling illiquid investments in private markets and restricted funds. As such, we divide the study into two halves. First, we attempt to mimic private equity behavior by a quasi-replication strategy with a portfolio of publicly traded assets, as illustrated in an application to …
Mar
09
Measurement scheme and classification methods for the development of a ‘Product DNA’ concept in manufacturing
Todays manufacturing is characterized by an abundance of data continuously collected across the manufacturing process and throughout the products life cycle. Inspired by the Human Genome Project, this research proposes a Product DNA concept to extract the useful information from the product quality characteristics, which will define a products unique characteristics to help the process …
Mar
08
Modeling supply chain dynamics with calibrated simulation using data fusion
In today’s global market, companies are facing unprecedented levels of uncertainties in supply, demand and in the economic environment. A critical issue for companies to survive increasing competition is to monitor the changing business environment and manage disturbances and changes in real time. In this dissertation, an integrated framework is proposed using simulation and online …
Mar
08
Long-term power system capacity expansion planning considering reliability and economic criteria
Before the deregulation of the electric industry, a vertically integrated utility made planning decisions for both the generation system and the transmission system according to reliability criteria. The deregulation of the electric industry has resulted in an unbundling of the long-term planning function for generation and transmission systems. In the deregulated world, transmission planning is …