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Articles 151 - 180 of 249
Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
Cost-Sensitive Learning-Based Methods For Imbalanced Classification Problems With Applications, Talayeh Razzaghi
Cost-Sensitive Learning-Based Methods For Imbalanced Classification Problems With Applications, Talayeh Razzaghi
Electronic Theses and Dissertations
Analysis and predictive modeling of massive datasets is an extremely significant problem that arises in many practical applications. The task of predictive modeling becomes even more challenging when data are imperfect or uncertain. The real data are frequently affected by outliers, uncertain labels, and uneven distribution of classes (imbalanced data). Such uncertainties create bias and make predictive modeling an even more difficult task. In the present work, we introduce a cost-sensitive learning method (CSL) to deal with the classification of imperfect data. Typically, most traditional approaches for classification demonstrate poor performance in an environment with imperfect data. We propose the …
A Holistic Framework For Transitional Management, Ahmed Elattar
A Holistic Framework For Transitional Management, Ahmed Elattar
Electronic Theses and Dissertations
For all business organizations, there comes a time when a change must take place within their eco-system. It consumes a great deal of thought and planning to ensure that the right decision is made as it could alter the entire course of their business for a number of years to come. This change may appear in the form of a brilliant CEO reaching the age of retirement, or an unsuccessful Managing Director being asked to leave before fulfilling the term of her contract. Regardless of the cause, a transition must occur in which a suitable successor is chosen and put …
Assessing Safety Culture Among Pilots In Saudi Airlines: A Quantitative Study Approach, Mohammad Alsowayigh
Assessing Safety Culture Among Pilots In Saudi Airlines: A Quantitative Study Approach, Mohammad Alsowayigh
Electronic Theses and Dissertations
In high- risk industries, such as aviation, safety is a key for organization survivor. Most accidents involve human losses and bring substantial cost to organizations. Accidents can devastate the reputation and profitability of any organization. In aviation, more than 80% of aircraft accidents are related to human errors. Safety culture has substantial impact on the success of any organization. Employees' performance and behaviors are influenced by their perception of safety culture within their organization. In the aviation industry, pilots are considered the last resort to prevent accidents or mishaps in the air or ground. The focus on pilots' perception of …
A Framework For Measuring And Analyzing Customer Satisfaction At Computer Service Company Using Lean Six Sigma, Mohammed Abboodi
A Framework For Measuring And Analyzing Customer Satisfaction At Computer Service Company Using Lean Six Sigma, Mohammed Abboodi
Electronic Theses and Dissertations
The computer service industry has been expanding dramatically due to the increase in the number of computing machineries in the last two decades. The entrance of large size companies in the market and the release of online tools that have the ability for diagnosing and troubleshooting hardware and software issues have boosted the competition. In the meantime, many of the small and medium size companies find themselves unable to keep their customers satisfied since their competitors provide high quality service with lower cost. The lack of a good measurement system to assess and analyze the satisfaction level with the provided …
Relaxation Adaptive Memory Programming For The Resource Constrained Project Scheduling Problem, Robert Christopher-Lee Riley
Relaxation Adaptive Memory Programming For The Resource Constrained Project Scheduling Problem, Robert Christopher-Lee Riley
Electronic Theses and Dissertations
The resource constrained project scheduling problem (RCPSP) is one of the most intractable problems in operations research; it is NP-hard in the strong sense. Due to the hardness of the problem, exact solution methods can only tackle instances of relatively small size. For larger instances commonly found in real applications heuristic solution methods are necessary to find near-optimal solutions within acceptable computation time limits. In this study algorithms based on the relaxation adaptive memory programming (RAMP) method (Rego, 2005) are developed for the purpose of solving the RCPSP. The RAMP algorithms developed here combine mathematical relaxation, including Lagrangian relaxation and …
A Framework For Workforce Management An Agent Based Simulation Approach, Mario Marin
A Framework For Workforce Management An Agent Based Simulation Approach, Mario Marin
Electronic Theses and Dissertations
In today's advanced technology world, enterprises are in a constant state of competition. As the intensity of competition increases the need to continuously improve organizational performance has never been greater. Managers at all levels must be on a constant quest for finding ways to maximize their enterprises' strategic resources. Enterprises can develop sustained competitiveness only if their activities create value in unique ways. There should be an emphasis to transfer this competitiveness to the resources it has on hand and the resources it can develop to be used in this environment. The significance of human capital is even greater now, …
A Human-Centric Approach To Data Fusion In Post-Disaster Managment: The Development Of A Fuzzy Set Theory Based Model, Mubarak Banisakher
A Human-Centric Approach To Data Fusion In Post-Disaster Managment: The Development Of A Fuzzy Set Theory Based Model, Mubarak Banisakher
Electronic Theses and Dissertations
It is critical to provide an efficient and accurate information system in the post-disaster phase for individuals' in order to access and obtain the necessary resources in a timely manner; but current map based post-disaster management systems provide all emergency resource lists without filtering them which usually leads to high levels of energy consumed in calculation. Also an effective post-disaster management system (PDMS) will result in distribution of all emergency resources such as, hospital, storage and transportation much more reasonably and be more beneficial to the individuals in the post disaster period. In this Dissertation, firstly, semi-supervised learning (SSL) based …
Systematic Parameter Analysis For Selective Laser Melting (Slm) Of Silver-Based Materials., Harald Rieper
Systematic Parameter Analysis For Selective Laser Melting (Slm) Of Silver-Based Materials., Harald Rieper
Electronic Theses and Dissertations
Selective Laser Melting (SLM) is a growing technology for the additive manufacturing of parts and structures. Based on a powder layer technique, a laser locally melts the powder and forms new structures. [1] In this approach, silver-based alloy powders will be used. The processing of this kind of material is considered difficult compared to other powder materials such as mild steels or tool steels. Silver powder is a highly reflecting material and has excellent thermal conductivity. Both properties make it difficult to process using Selective Laser Melting. Due to its high price, industries use silver parts as economically as possible …
Linking Corporate Strategy To Operations : A Critical Review Of Prof. Kaplan’S Theories And The Development Of A Best-Practice Approach., Alexander Bogner
Linking Corporate Strategy To Operations : A Critical Review Of Prof. Kaplan’S Theories And The Development Of A Best-Practice Approach., Alexander Bogner
Electronic Theses and Dissertations
The rising speed of change in global frameworks drives international companies into a non-stop changing organization with the need of generating optimal revenues under changing conditions. Regarding to the need to be a flexible and competitive organization the value of a vision and a perfectly streamed strategy to this vision becomes a main success factor for global business. The trend for the need of development of a clear and constant strategy is equally rising with the trend of globalization and intercontinental business companies and therefor the business of strategy consulting rises constantly from the late 1990. Most of the strategy …
The Assignment Problem With Dependent Costs., Ghazal Tariri
The Assignment Problem With Dependent Costs., Ghazal Tariri
Electronic Theses and Dissertations
Assigning workers, each with their own skill set, to tasks which demand different skills in an efficient manner is a challenging problem that often requires workers to receive additional training. The training of workers is very costly with Training Magazine’s Annual Industry Report stating 58.5 billion dollars were spent in 2007 on employee training in the United States. Therefore assigning workers to tasks in such a way as to minimize the overall training costs is an important problem in many organizations. In this research, the assignment problem with dependent cost is considered, i.e. the training cost associated with assigning a …
Using Discrete Event Simulation To Improve The Patient Care Process In The Emergency Department Of A Rural Kentucky Hospital., Molly Cassaro Jones
Using Discrete Event Simulation To Improve The Patient Care Process In The Emergency Department Of A Rural Kentucky Hospital., Molly Cassaro Jones
Electronic Theses and Dissertations
The patient care process of a rural Kentucky hospital is a complex process that must be flexible in order to deal with a large variety of patient needs and a fluctuating patient volume where all patients are unscheduled. A simulation model of an average month in the emergency department was built using the Arena Simulation package. Methods for creating a simulation using Arena are included in this work. Statistics were generated from a number of different sources to create an accurate representation of the model. The Hospital reporting shows a need to improve on two quality measures being tracked, the …
An Investigation Of The Impact Of Requirements Engineering Skills On Project Success, Cynthia Atkins
An Investigation Of The Impact Of Requirements Engineering Skills On Project Success, Cynthia Atkins
Electronic Theses and Dissertations
A survey of project managers and requirements engineers was conducted to determine what skills, qualifications, and experiences were associated with project success. Survey results indicated that projects using Joint Application Development (JAD) sessions, use cases, and prototypes to engineer requirements were most successful. Other indicators of project success, according to participants, included an adequate allotment of time for requirements engineering—at least 15% of a project's time—and the use of project managers and requirements engineers with professional work experience. In particular, data indicated that Project Managers with at least five years of experience in Information Technology resulted in more successful projects.
Integrating Multiobjective Optimization With The Six Sigma Methodology For Online Process Control, Emad Abualsauod
Integrating Multiobjective Optimization With The Six Sigma Methodology For Online Process Control, Emad Abualsauod
Electronic Theses and Dissertations
Over the past two decades, the Define-Measure-Analyze-Improve-Control (DMAIC) framework of the Six Sigma methodology and a host of statistical tools have been brought to bear on process improvement efforts in today’s businesses. However, a major challenge of implementing the Six Sigma methodology is maintaining the process improvements and providing real-time performance feedback and control after solutions are implemented, especially in the presence of multiple process performance objectives. The consideration of a multiplicity of objectives in business and process improvement is commonplace and, quite frankly, necessary. However, balancing the collection of objectives is challenging as the objectives are inextricably linked, and, …
A Posteriori And Interactive Approaches For Decision-Making With Multiple Stochastic Objectives, Ahmed Bakhsh
A Posteriori And Interactive Approaches For Decision-Making With Multiple Stochastic Objectives, Ahmed Bakhsh
Electronic Theses and Dissertations
Computer simulation is a popular method that is often used as a decision support tool in industry to estimate the performance of systems too complex for analytical solutions. It is a tool that assists decision-makers to improve organizational performance and achieve performance objectives in which simulated conditions can be randomly varied so that critical situations can be investigated without real-world risk. Due to the stochastic nature of many of the input process variables in simulation models, the output from the simulation model experiments are random. Thus, experimental runs of computer simulations yield only estimates of the values of performance objectives, …
Simulation-Based Cognitive Workload Modeling And Evaluation Of Adaptive Automation Invoking And Revoking Strategies, Christina Rusnock
Simulation-Based Cognitive Workload Modeling And Evaluation Of Adaptive Automation Invoking And Revoking Strategies, Christina Rusnock
Electronic Theses and Dissertations
In human-computer systems, such as supervisory control systems, large volumes of incoming and complex information can degrade overall system performance. Strategically integrating automation to offload tasks from the operator has been shown to increase not only human performance but also operator efficiency and safety. However, increased automation allows for increased task complexity, which can lead to high cognitive workload and degradation of situational awareness. Adaptive automation is one potential solution to resolve these issues, while maintaining the benefits of traditional automation. Adaptive automation occurs dynamically, with the quantity of automated tasks changing in real-time to meet performance or workload goals. …
The Effect Of Curriculum Organization On The Acquisition Of Abstract Declarative Knowledge In Computer Based Instructions., Saleh Al-Foraih
The Effect Of Curriculum Organization On The Acquisition Of Abstract Declarative Knowledge In Computer Based Instructions., Saleh Al-Foraih
Electronic Theses and Dissertations
The United States of America has dropped behind many countries in terms of the Science and Engineering university degrees awarded since the beginning of the nineties. Multiple studies have been conducted to determine the cause of this decline in degrees awarded, and try to reverse the trend in US education. The goal of these studies was to determine the proper instructional methods that facilitate the knowledge acquisition process for the student. It has been determined that not one method works for all types of curriculum, for example methods that have been found to work effectively in curriculum that teaches procedures …
Investigating The Relationship Between Adverse Events And Infrastructure Development In An Active War Theater Using Soft Computing Techniques, Erman Cakit
Electronic Theses and Dissertations
The military recently recognized the importance of taking sociocultural factors into consideration. Therefore, Human Social Culture Behavior (HSCB) modeling has been getting much attention in current and future operational requirements to successfully understand the effects of social and cultural factors on human behavior. There are different kinds of modeling approaches to the data that are being used in this field and so far none of them has been widely accepted. HSCB modeling needs the capability to represent complex, ill-defined, and imprecise concepts, and soft computing modeling can deal with these concepts. There is currently no study on the use of …
Total Ownership Cost Modeling Of Technology Adoption Using System Dynamics: Implications For Erp Systems, Behzad Esmaeilian
Total Ownership Cost Modeling Of Technology Adoption Using System Dynamics: Implications For Erp Systems, Behzad Esmaeilian
Electronic Theses and Dissertations
Investment in new technologies is considered by firms as a solution to improve their productivity, product and service quality and their competitive advantages in the global market. Unfortunately, not all technology adoption projects have met their intended objectives. The complexity of technology adoption along with little consideration of the long term cost of the technology, are among the factors that challenge companies while adopting a new technology. Companies often make new technology adoption decision without enough attention to the total cost of the technology over its lifecycle. Sometimes poor decision making while adopting a new technology can result in substantial …
Success In Technology Organizations, Joseph Bass
Success In Technology Organizations, Joseph Bass
Electronic Theses and Dissertations
In today’s economic environment, it is advantageous for technology organizations to be cognizant of prevalent influences on success and failure and to incorporate this knowledge into their business and innovation strategies. Technology organizations were defined within this research as those in the business of created competence which is expressed in terms of entities consisting of devices, procedures, and acquired human skills (Clarke, 2005). Although, no organization contains the ideal mix of culture and ideological emphases, some have amassed impressive track records of great success. A literature review was used to identify factors relevant within similar contexts such as influences on …
Exploring The Innovation Environment Within The Systems Engineering Context Of A Defense Organization: A Preliminary Framework, Khaled Odeh
Electronic Theses and Dissertations
Innovation may involve the introduction of ideas for designing or producing new products, or introducing improvements to products, processes, services or any other aspect of an organization to the market place. A major element for measuring organizational strength is its perception of innovation and the ability of the organization to build on and sustain such strength. While there is no shortage of research and study materials on innovation, there is, however, a shortage of thorough and realistic analysis of the intersection of innovation management, and measurement of innovation within the systems engineering context of defense organizations. In addition, while most …
Employing Quality Management Principles To Improve The Performance Of Educational Systems: An Empirical Study Of The Effect Of Iso 9001 Standard On Teachers And Administrators Performance In The Indonesian Vocational Education System, Andreas Kuncoro
Electronic Theses and Dissertations
ISO 9001 has been world widely implemented in both manufacturing and service organizations. A lot of studies have been conducted to investigate the effects of ISO 9001 implementation on the performance of these organizations. Most of these studies show that ISO 9001 implementation realized positive operational improvements and financial success. Building on the merits of successful implementation of ISO 9001 quality management system in manufacturing and service, educational institutions have been attempted to adopt it in their operations. Even though there are studies relating ISO implementation to education, no research has been done to investigate the effects of ISO 9001 …
A Framework For Measuring The Value-Added Of Knowledge Processes With Analysis Of Process Interactions And Dynamics, Jose Cintron
A Framework For Measuring The Value-Added Of Knowledge Processes With Analysis Of Process Interactions And Dynamics, Jose Cintron
Electronic Theses and Dissertations
The most known and widely used methods use cash flows and tangible assets to measure the impact of investments in the organization’s outputs. But in the last decade many newer organizations whose outputs are heavily dependent on information technology utilize knowledge as their main asset. These organizations’ market values lie on the knowledge of its employees and their technological capabilities. In the current technology-based business landscape the value added by assets utilized for generation of outputs cannot be appropriately measured and managed without considering the role that intangible assets and knowledge play in executing processes. The analysis of processes for …
Strategic Improvement: A Systems Approach Using The Balanced Scorecard Methodology To Increase Federally Financed Research At The University Of Central Florida, Joseph Walters
Electronic Theses and Dissertations
The University of Central Florida has many successful measures to reflect on as it celebrates its 50th year in 2013. It is the university with the 2nd largest student population in the U. S. and its overall ranking in the U.S. News & World Report has improved 4 years in a row. However, with respect to research, the federally funded research and development for the University of Central Florida (UCF) has remained flat. In addition, when compared to other schools, its portion of those federal research dollars is small. This thesis lays the groundwork for developing a model for improving …
Modeling Of Socio-Economic Factors And Adverse Events In An Active War Theater By Using A Cellular Automata Simulation Approach, Halil Bozkurt
Modeling Of Socio-Economic Factors And Adverse Events In An Active War Theater By Using A Cellular Automata Simulation Approach, Halil Bozkurt
Electronic Theses and Dissertations
Department of Defense (DoD) implemented Human Social Cultural and Behavior (HSCB) program to meet the need to develop capability to understand, predict and shape human behavior among different cultures by developing a knowledge base, building models, and creating training capacity. This capability will allow decision makers to subordinate kinetic operations and promote non-kinetic operations to govern economic programs better in order to initiate efforts and development to address the grievances among the displeased by adverse events. These non-kinetic operations include rebuilding indigenous institutions’ bottom-up economic activity and constructing necessary infrastructure since the success in non-kinetic operations depends on understanding and …
Defining A Stakeholder-Relative Model To Measure Academic Department Efficiency At Achieving Quality In Higher Education, Federica Robinson-Bryant
Defining A Stakeholder-Relative Model To Measure Academic Department Efficiency At Achieving Quality In Higher Education, Federica Robinson-Bryant
Electronic Theses and Dissertations
In a time of strained resources and dynamic environments, the importance of effective and efficient systems is critical. This dissertation was developed to address the need to use feedback from multiple stakeholder groups to define quality and assess an entity’s efficiency at achieving such quality. A decision support model with applicability to diverse domains was introduced to outline the approach. Three phases, (1) quality model development, (2) input-output selection and (3) relative efficiency assessment, captured the essence of the process which also delineates the approach per tool applied. This decision support model was adapted in higher education to assess academic …
A Real Option Dynamic Decision (Rodd) Framework For Operational Innovations, Wilawan Onkham
A Real Option Dynamic Decision (Rodd) Framework For Operational Innovations, Wilawan Onkham
Electronic Theses and Dissertations
Changing the business operations and adopting new operational innovations, have become key features for a business solution approach. However, there are challenges for developing innovative operations due to a lack of the proper decision analysis tools, lack of understanding the impacts transition will have on operational models, and the time limits of the innovation life cycle. The cases of business failure in operational innovation (i.e. Eastman Kodak Company and Borders Group Inc.,) support the need for an investment decision framework. This research aims to develop a Real Option Dynamic Decision (RODD) framework for decision making, to support decision makers for …
Systems Geometry: A Methodology For Analyzing Emergent System Of Systems Behaviors, Christina Bouwens
Systems Geometry: A Methodology For Analyzing Emergent System Of Systems Behaviors, Christina Bouwens
Electronic Theses and Dissertations
Recent advancements in technology have led to the increased use of integrated ‘systems of systems’ (SoS) which link together independently developed and usable capabilities into an integrated system that exhibits new, emergent capabilities. However, the resulting SoS is often not well understood, where secondary and tertiary effects of tying systems together are often unpredictable and present severe consequences. The complexities of the composed system stem not only from system integration, but from a broad range of areas such as the competing objectives of different constituent system stakeholders, mismatched requirements from multiple process models, and architectures and interface approaches that are …
Evaluating Human-Robot Implicit Communication Through Human-Human Implicit Communication, Andrew Xenos Richardson
Evaluating Human-Robot Implicit Communication Through Human-Human Implicit Communication, Andrew Xenos Richardson
Electronic Theses and Dissertations
Human-Robot Interaction (HRI) research is examining ways to make human-robot (HR) communication more natural. Incorporating natural communication techniques is expected to make HR communication seamless and more natural for humans. Humans naturally incorporate implicit levels of communication, and including implicit communication in HR communication should provide tremendous benefit. The aim for this work was to evaluate a model for humanrobot implicit communication. Specifically, the primary goal for this research was to determine whether humans can assign meanings to implicit cues received from autonomous robots as they do for identical implicit cues received from humans. An experiment was designed to allow …
Multiobjective Design Optimization Of Gas Turbine Blade With Emphasis On Internal Cooling, Narasimha Nagaiah
Multiobjective Design Optimization Of Gas Turbine Blade With Emphasis On Internal Cooling, Narasimha Nagaiah
Electronic Theses and Dissertations
In the design of mechanical components, numerical simulations and experimental methods are commonly used for design creation (or modification) and design optimization. However, a major challenge of using simulation and experimental methods is that they are timeconsuming and often cost-prohibitive for the designer. In addition, the simultaneous interactions between aerodynamic, thermodynamic and mechanical integrity objectives for a particular component or set of components are difficult to accurately characterize, even with the existing simulation tools and experimental methods. The current research and practice of using numerical simulations and experimental methods do little to address the simultaneous “satisficing” of multiple and often …
Systems Analysis For Urban Water Infrastructure Expansion With Global Change Impact Under Uncertainties, Cheng Qi
Electronic Theses and Dissertations
Over the past decades, cost-effectiveness principle or cost-benefit analysis has been employed oftentimes as a typical assessment tool for the expansion of drinking water utility. With changing public awareness of the inherent linkages between climate change, population growth and economic development, the addition of global change impact in the assessment regime has altered the landscape of traditional evaluation matrix. Nowadays, urban drinking water infrastructure requires careful long-term expansion planning to reduce the risk from global change impact with respect to greenhouse gas (GHG) emissions, economic boom and recession, as well as water demand variation associated with population growth and migration. …