Operations Research, Systems Engineering and Industrial Engineering Commons^™

Competition And Third-Party Platform-Integration In Ride-Sourcing Markets, Yaqian Zhou, Hai Yang, Jintao Ke, Hai Wang, Xinwei Li

Research Collection School Of Computing and Information Systems

Recently, some third-party integrators attempt to integrate the ride services offered by multiple independent ride-sourcing platforms. Accordingly, passengers can request ride through the integrators and receive ride service from any one of the ride-sourcing platforms. This novel business model, termed as third-party platform-integration in this work, has potentials to alleviate market fragmentation cost resulting from demand splitting among multiple platforms. Although most existing studies focus on operation strategies for one single monopolist platform, much less is known about the competition and platform-integration and their implications on operation strategy and system efficiency. In this work, we propose mathematical models to describe …

Development Of Simulation Framework For Impact Analysis Of Launch Delays On Lunar Base Station, Giulio Cristello

Theses and Dissertations

Humans have not ventured beyond Earth since the days of the Apollo missions. NASA astronauts were the first and last to set foot on the lunar surface, and it is again thanks to NASA that the initiative to go back to the Moon is moving forward. The Artemis missions will land men and women on the lunar surface with the purpose of establishing a long-term presence on the Moon. The current Artemis Plan includes the Artemis Base Camp, a lunar base stationed on the lunar South Pole. The maintenance of the base will require frequent missions to be performed in …

Finding Core Members Of A Hedonic Game, Daniele M. Vernon-Bido

Computational Modeling & Simulation Engineering Theses & Dissertations

Agent-based modeling (ABM) is a frequently used paradigm for social simulation; however, there is little evidence of its use in strategic coalition formations. There are few models that explore coalition formation and even fewer that validate their results against an expected outcome. Cooperative game theory is often used to study strategic coalition formation but solving games involving a significant number of agents is computationally intractable. However, there is a natural linkage between ABM and the study of strategic coalition formation. A foundational feature of ABM is the interaction of agents and their environment. Coalition formation is primarily the result of …

Deep Learning Object-Based Detection Of Manufacturing Defects In X-Ray Inspection Imaging, Juan C. Parducci

Mechanical & Aerospace Engineering Theses & Dissertations

Current analysis of manufacturing defects in the production of rims and tires via x-ray inspection at an industry partner’s manufacturing plant requires that a quality control specialist visually inspect radiographic images for defects of varying sizes. For each sample, twelve radiographs are taken within 35 seconds. Some defects are very small in size and difficult to see (e.g., pinholes) whereas others are large and easily identifiable. Implementing this quality control practice across all products in its human-effort driven state is not feasible given the time constraint present for analysis.

This study aims to identify and develop an object detector capable …

Complex System Governance Leadership, David C. Walters

Engineering Management & Systems Engineering Theses & Dissertations

The purpose of this research was to develop a systems theory-based framework for leadership in governance of complex systems. Recognizing complexity and uncertainty as norms for the environments in which organizations exist encouraged researchers to suggest complexity theory, complex systems, and complex adaptive systems as appropriate for addressing these conditions. Complex System Governance (CSG), based in systems theory, management cybernetics, and governance, endeavors to provide for the design, execution and evolution of functions that provide control, communication, coordination, and integration at the metasystem level to support operations and continued system existence (viability). From a management cybernetics perspective, CSG leadership has …

Design, Development, And Calibration Of An Electric Field Probe For Use On Sounding Rockets, Anthony Oreo

Doctoral Dissertations and Master's Theses

Earth’s ionosphere is a dynamic environment that has yet to be fully understood. Interactions of high-energy particles from space with atmospheric plasma and the Earth’s natural magnetic field create many interesting interactions, many of which have direct impacts on the planet and human life. Understanding the dynamics of the upper atmosphere is a compelling endeavor, with much of the research being conducted through high-altitude sounding rockets. These rockets allow for in-situ measurements of the physical parameters of the upper atmosphere which in turn helps in the answering of important questions in space science. In order to quantify the force a …

Optimizing Class Access - Owlgo, Matthew Pendley, Bright Uchehara, Renji Maliakal, Jorge Solorzano

Senior Design Project For Engineers

This is the senior design project for Optimizing Class Access using OwlGo. The researcher examine the Marietta campus of Kennesaw State University, in hopes of improving the assigned class locations for each major.

Développement D’Une Méthodologie Pour Évaluer La Performance Des Gants À Isoler Des Vibrations En Tenant Compte De La Dextérité Ainsi Que De La Force De Préhension, Pierre Marcotte, Subhash Rakheja, Christian Larivière, Yumeng Yao, Chantal Gauvin, Karim Hamouda, Hakim Mecheri

Rapports de recherche scientifique

L'efficacité des gants antivibrations pour réduire les vibrations transmises à la main est actuellement évaluée en laboratoire selon la méthodologie décrite dans la norme ISO 10819:2013. Cette norme évalue la transmission des vibrations à la paume de la main, mais ne tient pas compte de la transmission des vibrations aux doigts ni de l’effet du port de ces gants sur la dextérité manuelle et l’effort de préhension. Cette étude visait à développer une méthodologie afin d’améliorer l’évaluation de la transmission des vibrations par les gants antivibrations à la paume et aux doigts, tout en tenant compte de l’effet de ces …

Nanoparticulate Carriers For Drug Delivery, Samantha Lokelani Crossen, Tarun Goswami

Biomedical, Industrial & Human Factors Engineering Faculty Publications

Drug delivery with nanoparticulate carriers is a new and upcoming research area that is making major changes within the pharmaceutical industry. Nanoparticulate carriers are discussed, particularly, engineered nanoparticulate carriers used as drug delivery systems for targeted delivery. Nanoparticulate carriers that are used for drug delivery systems include polymers, micelles, dendrimers, liposomes, ceramics, metals, and various forms of biological materials. The properties of these nanoparticulate carriers are very advantageous for targeted drug delivery and result in efficient drug accumulation at the targeted area of interest, reduced drug toxicity, reduced systemic side effects, and more efficient use of the drug overall. Nanoparticlulate …

Simulation On Mutual Interference Of Laser Radar In Road Environments, Xuesong Mao, Runlong Lei, Shaowei Huang, Xuetao Mao

Journal of System Simulation

Abstract: Transmission line inspection is an important work to ensure the safe operation of the power grid. It involves the live-work, the power-outage-maintenance and the fault-diagnosis. Training using only 3D virtual technology cannot achieve realistic results. It is necessary to combine 3D virtual scenes with digital grids. To this end, using the collected monitoring data and multi-time-scale calculation models, a twin state digital power grid has been constructed for the live-work, a parallel state digital power grid has been constructed for the power-outage-maintenance, and corresponding analog devices have been added to the parallel digital power grid to complete the training …

Key Technology Research On Stall Spin Simulation Training System Of An Aircraft, Guangxu Xi, Yongyi Liu, Chong Wu, Junjie Zhang, Yinghao Chen

Journal of System Simulation

Abstract: In order to realize the simulation continuity of the multi-state evolution of traffic and to solve the problem that multi-state traffic can only be simulated by single state traffic through multiple times, the middleware model of continuous traffic event simulation is built by the secondary development interface of VISSIM simulation software, and the original two related traffic simulation events are jointly driven. The secondary development of VISSIM-com is carried out by C# and database. The survey data of the intersection of Ganghua Road and Baihua Road in the Yuzhong District of Chongqing is selected as the example, and the …

Study On Near-Body Pressure Characteristics Of Bionic Robotic Fish Undulating In Near Wall Region, Ou Xie, Aiguo Song, Qixin Zhu

Journal of System Simulation

Abstract: To avoid unbalanced workload assignment, we studied the vehicle routing problem with refined oil secondary distribution considering workload balance. A bi-objectivemixed integer programming model was built to minimize the total distribution cost and the maximum difference in vehicle route length. A heuristic variable neighborhood tabu search algorithm was designed. An improved Solomon_I1 insertion algorithm was developed to generate afeasible initial solution such that the total distribution cost was as small as possible. Then, the variable neighborhood tabu search algorithm was used to improve the initial solution and thereby obtain the approximate optimal solution. The simulation results show that in …

Simulation Optimization On Joint Production And Preventive Maintenance Scheduling For Distributed Job-Shop, Fei Ye, Ziqing Li, Yuanjun Laili

Journal of System Simulation

Abstract: Distributed job-shop production scheduling is the key to high efficient production. Preventive maintenance, an essential means to ensure the safety and reliability of equipment, should be the necessary content of the production decision-making. Aiming at the production delay caused by equipment maintenance, a simulation-corrected optimization method is proposed. The mathematical model and simulation model for the joint production and preventive maintenance scheduling are established. The sequence exchange-based genetic algorithm is combined with the simulation-corrected optimization method to form a fast simulation optimization scheme. Experimental results on typical cases show that the proposed simulation optimization method can improve the solution …

Multi-Modality Affective Computing Model Based On Personality And Memory Mechanism, Sijin Zhou, Dicheng Chen, Geng Tu, Dazhi Jiang

Journal of System Simulation

Abstract: With the development of affective computing, the correlation of memory, individuation and emotion is more and more important. Focus on the machine emotion shortcomings in the perception, understanding and expression, an emotion computing model integrating the emotion perception, understanding and expression is proposed. The model is a memory-oriented deep network perception model that accepts multiple modal inputs (visual, auditory, lexical) and applies a fuzzy emotion integration decision to realize the understanding of uncertain emotions. The simulation experiments prove that the model has a good performance in all kinds of multimodal affective computing.

Research On Discrete Workshop Task Assignment Based On Improved Water Filling Algorithm, Kaituan Feng, Jie Yuan

Journal of System Simulation

Abstract: Aiming at the unsatisfactory the results of the real-time dynamic task allocation in discrete workshops are not ideal, an improved water filling algorithm is proposed. Compared with the equal cost allocation of the water injection algorithm, the processing rate and cost factors are added to the improved water injection algorithm to coordinate the processing rate, the cost and the workpieces. The allocation of the different cost workpieces is realized and the result is adjusted, which can meet the requirements of discrete distribution. The improved water injection algorithm can dynamically allocate the newly added workpieces in real time. The proposed …

Virtual Scene Stereoscopic Panorama Generation And Viewport Rendering Algorithm, Haoxiang Li, Chunyi Chen, Xiaojuan Hu, Yunbiao Liu, Qiwei Xing

Journal of System Simulation

Abstract: Aiming at the nonuniform sampling in map projection and the redundancy in aspheric projection, spherical Fibonacci lattices is used to sample the visible spherical area to generate spherical Fibonacci lattice panorama with low-redundancy and high-quality. On the basis of panoramic stereo imaging model, the binocular ray direction generation algorithm for spherical stereo panorama is proposed. With Fibonacci grid, an adaptive filtering method of light-visibility map for panorama is designed to generate spherical panorama with approximate soft shadow. The nearest neighbor interpolation is used to render the viewport of panorama. Extensive experiments show that the frame frequency of the viewport …

Simulation On Cold Chain Distribution Path Of Fresh Agricultural Products Under Low-Carbon Constraints, Tao Ning, Tao Gou, Xiangdong Liu

Journal of System Simulation

Abstract: The freshness distribution requirements of fresh agricultural products may increase the carbon emissions of the cold chain distribution process. A cold chain distribution scheduling strategy and simulation method for the fresh agricultural products under low-carbon constraints is proposed. Based on the quantitative analysis of the carbon tax mechanism, a mathematical model of minimizing the carbon emissions and minimizing the overall cost of distribution is established. Comprehensively analyzing the conventional factors such as the product delivery volume, delivery time and loading and unloading time in logistics distribution, an improved quantum ant colony algorithm based on adaptive rotation angle …

Safety Evaluation Of Amusement Rides Using Accumulated Accident Data: Accident Data Framework, Kathryn Woodcock

Journal of Themed Experience and Attractions Studies

Amusement rides and devices are a popular form of recreation and important component of the tourism industry. Injury-producing accidents are rare, and the viability of the industry relies on perceived safety of the activity. Some existing metrics use accumulated accident reports. Several metrics tabulate the number of injuries, but none collect enough information about the context of accidents to analyse the accumulated data to deduce patterns. This paper describes an Accident Data Framework for a minimal set of variables from reports of amusement device accident, and the structure for a useful narrative to aid reporters and recorders to avoid introducing …

When The Magic Closes: Examining How Disney Fans Coped With Theme Park And Resort Closures Amid The Covid-19 Pandemic, Cody Havard, Carissa A. Baker, Daniel L. Wann, Rick Grieve

Journal of Themed Experience and Attractions Studies

This essay discusses a qualitative investigation we conducted with fans of the Disney parks and resorts during the summer of 2020 regarding the company’s handling of the COVID-19 pandemic. Specifically, 22 people responded to open-ended questions from an online survey to discuss their views of the closures and planned reopenings of the Disney parks and resorts amid the early days of the pandemic. Using social identity theory (Tajfel, 1978) and the theory of planned behavior (Ajzen, 1991), we discuss how fans react to and cope with the temporary loss of a favorite activity and how companies in the themed entertainment …

Covid-19 And Immersion: Physical, Virtual, And Home Spaces, Scott Lukas

Journal of Themed Experience and Attractions Studies

This article considers the dramatic adaptations that have occurred in themed immersive spaces as they have dealt with the challenging dynamics of COVID-19. As COVID-19 has been a respiratory disease, it has impacted the operations of theme parks, casinos, cruise ships, and other immersive spaces, especially as such spaces have relied, traditionally, on physical forms of entertainment and immersion. The writing begins with a consideration of the COVID-19 challenges noted in the theme park and cruise ship industries. OceanMedallionTM and MyMagic+ technologies are considered for their possible positive role in addressing the operational dynamics during the pandemic. Issues of guest …

Brighter But Not Clearer: Entertainment-Dependent Destinations Dealing With Long Covid, Louis-Etienne Dubois, Frederic Dimanche

Journal of Themed Experience and Attractions Studies

At the onset of the COVID-19 pandemic, we explored a range of very different possible outcomes for destinations that rely heavily on their entertainment sector (Dubois & Dimanche, 2021). Several months later, this article seeks to revisit those outcomes, while also highlighting the ongoing recovery efforts and evolving strategies of entertainment-dependent destinations (EDDs). To do so, we reconnected with the panel of respondents from various destinations (i.e., Las Vegas, Nashville, New Orleans etc.) to take stock of both new challenges and opportunities, as well as emerging factors impacting their respective markets. Our results show that while EDDs are facing a …

Theme Parks, Staycation Practices, And Covid-19: Opportunities And Uncertainties, Salvador Anton Clavé

Journal of Themed Experience and Attractions Studies

The effects of COVID-19 on the market transformation of the theme park industry has been significant in the short term because of travel restrictions. Challenges, impacts, responses, and strategies might vary from one region to another and even from one theme park to another. However, it can be assumed that domestic travel will continue to have an effect on the theme park industry during the months to come and likely beyond the pandemic. In this context, the “staycation” is becoming a booming trend in the leisure, entertainment, and tourism industry, creating new, current, and future unexpected economic winners and losers. …

Disney During Covid-19: The Tourist And The Actor’S Nightmare, Jennifer A. Kokai, Tom Robson

Journal of Themed Experience and Attractions Studies

In this essay, we argue that the experience of being at Disney theme parks in COVID times was a waking version of what is sometimes called “The Actor’s Nightmare.” Due to safety regulations, theme parks either dropped live entertainment that structures the day as a show with a clear beginning and end (e.g. park-opening rope drop performances, and the fireworks), attempted to include references to COVID in live entertainment (like in

the Frozen Ever After singalong, which added some COVID jokes), or to ignore it (like the Festival of the Lion King). In any case, due to these measures the …

The “Politics Of Inclusion/Exclusion” In Times Of The Pandemic, Florian Freitag

Journal of Themed Experience and Attractions Studies

As commercial enterprises that depend on attracting a maximum number of visitors in order to be economically successful, theme parks have generally been careful to avoid unpleasant, sensitive, or controversial themes (or aspects of a theme) that might offend or alienate potential customers. Due to official regulations concerning e.g. the wearing of masks in waiting lines and during rides, however, the pandemic cannot simply be “excluded” from the parks and remains constantly visually present, thus seriously undermining the companies’ efforts to keep the park grounds rigidly separated from the rest of the world. Particular operational decisions by some theme park …

“It Takes People To Make The Dream A Reality”: Disney’S Hr Strategy In Response To Covid-19, Jaime L. Williams, Allison A. Toth

Journal of Themed Experience and Attractions Studies

From January 2020 to the beginning of fall 2021, theme parks around the world have been required to engage in abnormal, abrupt, and major shifts in operations caused by the ongoing global pandemic (COVID-19). Through the process of sensemaking, this paper will focus on the human resources related decisions made by The Walt Disney Company in an effort to better understand the organization’s responses to changes in the external environment and the resulting outcomes during the pandemic. The overall management of Cast Members in the United States during this time period with specific focuses on the layoff and re-hiring of …

Are European Theme Parks Likely To Suffer From Long Covid?, Pieter Cornelis

Journal of Themed Experience and Attractions Studies

COVID-19 has had a major impact on the theme park industry. Visits to European parks were significantly lower in 2020 than the year before. This article discusses the short-term and long-term economic consequences of the pandemic for the theme park industry. Attitudinal loyalty, inertia effects of guest satisfaction on repeat visits, (deferred) reinvestments, and the difference between theme and amusement parks will be considered. To compensate for losses in 2020, many parks increased their visitor numbers in the 2021 season to the maximum permitted capacity, especially in the summer months. As a result, analysis of waiting times at 22 investigated …

Introduction: Theme Parks And Covid-19, Salvador Anton Clavé, Florian Freitag

Journal of Themed Experience and Attractions Studies

In the tourism industry, “crises” have been conceptualized as local and temporary phenomena, interval states that may require imminent action, but that can eventually be overcome, with business simply resuming. At the moment of writing, however, it is not at all clear when or if the theme park sector can simply return to a pre-pandemic state of affairs. Even if tourism may once again attain pre-COVID numbers, it may well be through entirely new and different forms. The essays collected here provide scholarly and professional snapshots of the current (winter 2021/2022) state of the theme park industry, with special attention …

Research On Credibility Assessment Of Cloud Simulation System, Wei Li, Huan Zhang, Ping Ma, Ming Yang

Journal of System Simulation

Abstract: The cloud simulation platform supports the "cloud simulation" mode, which can automatically find simulation resources and dynamically build the cloud simulation system. Because the cloud simulation platform has the characteristics of simulation services establishment on demand and multi-granularity resources sharing, the credibility evaluation of the cloud simulation system faces new challenges in the credibility of the simulation resources, the credibility of the simulation subsystems and the reliability of the simulation environment, etc. From the whole life cycle perspective of the cloud simulation system, the credibility evaluation process model and the credibility evaluation index system of the cloud simulation system …

Image Reconstruction Of Electrical Capacitance Tomography Based On Convolutional Neural Network And Finite Element Simulation, Lifeng Zhang, Huiren Wang

Journal of System Simulation

Abstract: To address the issues related to the mixed hybrid telemetry, track and command(TT&C) resource, including multiple attributes, large differences in preferences and scheduling conflicts when resources are limited in joint scheduling, on the basis of the description method in the single system TT&C network scheduling research, the characteristics of the hybrid TT&C task requirements are analyzed and the standardized description of the hybrid TT&C resource scheduling task requirements is provided. With the goal of maximizing the return value of TT&C scheduling, a hybrid resource joint scheduling model is established. A solution strategy based on an improved genetic …

Research On Physical Layer Security Of Full-Duplex Uav Relaying, Shu Ye, Xiaodong Ji, Wenhua Li

Journal of System Simulation

Abstract: Aiming at the physical layer security of a full-duplex UAV relaying system, a novel scheme based on the joint optimization of the transmit power and UAV flight trajectory is proposed. Under the condition of limited transmit power and flight trajectory, a joint optimization that maximizing the average secrecy rate of the system is constructed. The non-concave problem that cannot be solved directly is resolved into two sub-problems of transmit power and flight trajectory optimization, which can be transformed into the concave problem by the successive convex approximation method. An iterative algorithm is proposed to obtain the numerical solution of …