Emergency Department Systems Engineering: Modelling And Event Simulation,
2020
Universiti Malaya
Emergency Department Systems Engineering: Modelling And Event Simulation, O Alharethi Salman Zayed
Student Works (2020-2029)
Emergency department systems are meant to ensure the timely delivery for essential healthcare services through complex systems. (ED) offers various services and have several components in its parts. Examined long previous research on system engineering and quality of healthcare resulting on these are influenced by operational management. Real time data are very helpful for decision making for any systems. Patient output feedback and satisfaction can be ensured with engineered management. EDs have become evident particularly in current scenario when the world is in the grip of the deadly COVID-19. All this implies that analysis is significant for improvement of services …
A Framework For Using Fused Image Data In Statistical Process Control,
2020
Western Michigan University
A Framework For Using Fused Image Data In Statistical Process Control, Shengfeng Chen
Dissertations
The use of image data in manufacturing quality control systems has grown rapidly over the years. Technological advancements in imaging devices (e.g., digital cameras, x-ray scanners, infrared cameras) have provided convenient and cost-effective ways to obtain images. These images contain important quality features (e.g., textures and product dimensions) that can be used to monitor, diagnose, predict, and control manufacturing processes. A key tool for monitoring images is statistical process control charts. Integrating images of parts to detect process shifts can significantly improve a quality systems efficiency. Unfortunately, appropriate techniques that take full advantage of data-rich images for control charting are …
Application Of Classification In Machine Learning: An Analysis Of Highway-Rail Grade Crossing Systems Safety,
2020
Florida Institute of Technology
Application Of Classification In Machine Learning: An Analysis Of Highway-Rail Grade Crossing Systems Safety, Christopher John Helmer Cox
Theses and Dissertations
Highway-rail grade crossing accidents are the second leading cause of fatalities within the railway transportation industry. Highway-rail grade crossing fatality statistics have failed to improve over the last decade, and in some years have increased. Because of these trends, research has found that considerable Federal funding initiatives exist to support and develop contemporary risk reduction methodologies involving machine learning and artificial intelligence. In accord with these initiatives, this thesis investigates the highway-rail grade crossing safety problem using machine learning to implement an ensemble decision tree-based classification application. The resulting classifier has been validated to achieve a less than three percent …
A Core Reference Hierarchical Primitive Ontology For Electronic Medical Records Semantics Interoperability,
2020
Old Dominion University
A Core Reference Hierarchical Primitive Ontology For Electronic Medical Records Semantics Interoperability, Ziniya Zahedi
Engineering Management & Systems Engineering Theses & Dissertations
Currently, electronic medical records (EMR) cannot be exchanged among hospitals, clinics, laboratories, pharmacies, and insurance providers or made available to patients outside of local networks. Hospital, laboratory, pharmacy, and insurance provider legacy databases can share medical data within a respective network and limited data with patients. The lack of interoperability has its roots in the historical development of electronic medical records. Two issues contribute to interoperability failure. The first is that legacy medical record databases and expert systems were designed with semantics that support only internal information exchange. The second is ontological commitment to the semantics of a particular knowledge …
A Framework For Adaptive Capacity In Complex Systems,
2020
Old Dominion University
A Framework For Adaptive Capacity In Complex Systems, Abdulrahman Alfaqiri
Engineering Management & Systems Engineering Theses & Dissertations
Complex systems are characterized by their high level of inter-connectivity, ambiguity, and emergence. Therefore, a failure in one element of a system (e.g. cyber layer) due to external or internal disturbances can lead to a cascade effect that may influence all elements of the system. Consequently, the complex system will not be able to perform its functional performance. Threats related to complex systems are very dynamic, fast, complex and damage can be severe. Thus, to respond to the dynamic and unpredictable nature of these threats, complex systems need to be highly adaptive to survive and thrive in the face of …
A Quest To Identify The Emerging Leadership Skills In Vuca World And Investigation Of Their Applications In Various Organizational Levels And Security Environments,
2020
Old Dominion University
A Quest To Identify The Emerging Leadership Skills In Vuca World And Investigation Of Their Applications In Various Organizational Levels And Security Environments, Ali Can Kucukozyigit
Engineering Management & Systems Engineering Theses & Dissertations
The theoretical framework of this research is based on “skills approach” that emphasizes the leader’s capabilities (skills, knowledge, and capabilities) that can be learned, taught, and fostered. VUCA (Volatile, Uncertain, Complex and Ambiguous) environment is chosen as the focal point of this research as the leadership skills are extracted from studies referring to such environment. Although the acronym is dominantly used in management and business domains, the military also uses it to describe the complex operational environments like in Iraq and Afghanistan. The identification of individual leadership skills and delivering the right skill, at the right time, to the right …
Cyber-Assets At Risk (Car): Monetary Impact Of Personally Identifiable Information Data Breaches On Companies,
2020
Old Dominion University
Cyber-Assets At Risk (Car): Monetary Impact Of Personally Identifiable Information Data Breaches On Companies, Omer Ilker Poyraz
Engineering Management & Systems Engineering Theses & Dissertations
Cyber-systems provide convenience, ubiquity, economic advantage, and higher efficiency to both individuals and organizations. However, vulnerabilities of the cyber domain also offer malicious actors with the opportunities to compromise the most sensitive information. Recent cybersecurity incidents show that a group of hackers can cause a massive data breach, resulting in companies losing competitive advantage, reputation, and money. Governments have since taken some actions in protecting individuals and companies from such crime by authorizing federal agencies and developing regulations. To protect the public from losing their most sensitive records, governments have also been compelling companies to follow cybersecurity regulations. If companies …
Human Error In Commercial Fishing Vessel Accidents: An Investigation Using The Human Factors Analysis And Classification System,
2020
Old Dominion University
Human Error In Commercial Fishing Vessel Accidents: An Investigation Using The Human Factors Analysis And Classification System, Peter J. Zohorsky
Engineering Management & Systems Engineering Theses & Dissertations
The commercial fishing industry is frequently described as one of the most hazardous occupations in the United States. The objective, to maximize the catch, is routinely challenged by a variety of elements due to the environment, the vessel, the crew, and several external considerations and how they interact with each other. The analysis of fishing vessel accidents can be complicated due to the diverse nature of the industry, including the species caught, the type and size of boat that is employed, how far travelled from their homeport, and the adequacy of the support organizations ensuring safe and uninterrupted operations. This …
Situation Assessment Method For Cooperative Air Combat Based On Dynamic Combat Power Field,
2020
1. Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China; ;2. College of Electronic Communication, Northwestern Polytechnical University, Xi'an 710072, China; ;
Situation Assessment Method For Cooperative Air Combat Based On Dynamic Combat Power Field, Zhanwu Li, Yizhe Chang, Haiyan Yang, Yingxin Kou, Xu An
Journal of System Simulation
Abstract: Considering on the remaining problem in current situation assessment of Beyond-Visual-Range cooperative air combat, such as isolation of static/dynamic state superiority, the concept of combat power field was applied in situation assessment of Beyond-Visual-Range cooperative air combat. Coupled with characteristics of cooperative air combat, the model of combat power field was constructed by aspects of attack, communication, detection, maneuverability, electronic countermeasure and cooperation and alert. The method was verified by the simulation. The result shows the method has advantages of integrity, visualization and continuity compared with former situation assessment methods, and is also able to improve the quality and …
Research On Optimizing Lot Sizing Of Job Shop Based On Em_Plant,
2020
College of Management, Tianjin University of Technology, Tianjin 300384, China;
Research On Optimizing Lot Sizing Of Job Shop Based On Em_Plant, Xiaobing Pei, Linlin Tan
Journal of System Simulation
Abstract: Considering maximizing the rate of account and choosing production process time as the optimization objectives to solve the lot sizing optimization problems of job shop, the model about production time under ideal conditions was established, and accordingly the formula of solving theoretical optimal lot sizing was derived. To compensate for the limitations of mathematical modeling and improve the feasibility of the optimal solution, the actual manufacturing operations in job shop was simulated and optimized according to production batch simulation optimization strategy by eM_plant software. By running the simulation model the theoretical optimal solution was amended, to make optimal …
Design And Implementation Of Quantum-Inspired Bee Colony Algorithm,
2020
1. Admission and Employment office, Northeast Petroleum University, Daqing 163318, China; ;
Design And Implementation Of Quantum-Inspired Bee Colony Algorithm, Shuyun Yang, Panchi Li
Journal of System Simulation
Abstract: To enhance the performance of artificial bee colony algorithm, a quantum-inspired bee colony algorithm was proposed. In the proposed approach, the bees were encoded with the qubits described on the Bloch sphere. The evolutionary search was achieved by rotating the qubit about the rotation axis on the Bloch sphere. The Bloch coordinates of qubit can be obtained by measuring with the Pauli matrices, and the optimization solutions can be presented through the solution space transformation. The highlight advantages of this method are the ability to simultaneously adjust two parameters of a qubit and automatically achieve the best match between …
Intelligent Detecting For Infrared Aerial Small Target Based On Non-Subsampled Contourlet Transform,
2020
1. College of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China; ;2. China Airborne Missile Academic, Luoyang 471009, China; ;3. College of Information Engineering, Zhengzhou University, Zhengzhou 450001, China;
Intelligent Detecting For Infrared Aerial Small Target Based On Non-Subsampled Contourlet Transform, Liu Gang, Xingyuan Xu, Zhou Heng, Xitao Zhang
Journal of System Simulation
Abstract: Aiming at the problem of infrared aerospace small target's detecting under complex background, an intelligent algorithm was proposed based on the non-subsampled contourlet transform and BP neutral network. By using the morphologic top-hat transform which had adaptive structural element, some infrared background was suppressed. By defining the center vector of subband coefficients, the proposed method constructed the synthetical image at high frequency and suppressed the complex background further. Subsequently, taking pixel's gray level, horizontal gradient, vertical gradient, diagonal gradient, neighbour mean and neighbour variance as input character vector, a BP neutral network which had three layers was constructed by …
Dynamic Simulation And Test Of Mountain Orchard Double-Track Transport Traction System,
2020
1. Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education,South China Agricultural University, Guangzhou 510642, China; ;2. Division of Citrus Machinery, China Agriculture Research System, Guangzhou 510642, China; ;3. College of Engineering, South China Agricultural University, Guangzhou 510642, China;
Dynamic Simulation And Test Of Mountain Orchard Double-Track Transport Traction System, Yuping Ouyang, Tiansheng Hong, Yudong Ma
Journal of System Simulation
Abstract: After the traction system virtual prototype model of mountain orchard transport was established, virtual simulation test was done to get the force of wire rope and the dynamic characteristics. Compared with trapezoidal velocity, under S type velocity curve, vehicle vibration amplitude was decreased obviously in each stage, average maximum force and average force of four key points was respectively decreased by 9.2% and 12.7%. Average relative error between kinetic parameters calculation and simulation values was 4.8%. Average relative error between test and simulation values was 4.02 %. This research results have provided a simulation platform and reference to whole …
Performance Analysis Of Netted Radar Data Fusion Systems,
2020
1. Information Center of Exercitation Department, National University of Defense Technology, Changsha 410073, China; ;
Performance Analysis Of Netted Radar Data Fusion Systems, Zhijie Chen, Bin Rao, Yongzhen Li, Zhiwei Zong
Journal of System Simulation
Abstract: The performance analysis of netted radar data fusion systems was proposed. The principles of two representative radar netting modes (i.e., centralized fusion and distributed fusion) were introduced and the associated capabilities of anti-jamming, anti-stealth, fusion accuracy, fusion discrimination, and communication requirements were quantitatively analyzed. Simulation results indicate that the netting essence is, centralized fusion by using ‘or' rule to complement information and realize trajectory composition whereas distributed fusion by using ‘and' rule to reduce information redundancy and realize discrimination ability. The research can provide some enlightenment for the newly-developed intellective netted radar data fusion systems.
Parameter Optimization On Coordinated Control System Of Thermal Power Units In High Rate Variable Load Operation Mode,
2020
1. North China Electric Power University, Changping District, State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, Beijing 102206, China, ;
Parameter Optimization On Coordinated Control System Of Thermal Power Units In High Rate Variable Load Operation Mode, Tian Liang, Liu Fang, Xinping Liu, Jizhen Liu
Journal of System Simulation
Abstract: The frequent fluctuations and rapid change of power grid generating load instruction cause the deterioration of control quality of generating load and throttle pressure in thermal power units. To solve this problem, a trial and error method, the parameters adjustment range of which could be quantified, was proposed. Based on the model of controlled object, the initial value of controller parameters were set conservatively. By calculating the difference between current value and the target value of load change rate, the optimization times were determined, the PID controller parameters optimization method of coordinated control system was studied, and the effectiveness …
Research On Section Optimization Of Water Quality Monitoring Based On Comprehensive Hierarchical Clustering,
2020
School of Computer and Information Engineering, Beijing Technology and Business University, Beijing, 100048, China;
Research On Section Optimization Of Water Quality Monitoring Based On Comprehensive Hierarchical Clustering, Xiaofeng Lian, Peng Sen, Xiaoyi Wang, Zaiwen Liu
Journal of System Simulation
Abstract: In order to optimize the layout of water quality monitoring section of river, lake and reservoir effectively, a new method for water quality monitoring section optimization was proposed based on comprehensive hierarchical clustering (CHC). A normalized matrix was constructed according to the original monitoring data of water quality. The method calculated the similarity to obtain the affinity-disaffinity relationship among the monitoring variables by 5 different distance algorithms, and then clustered the data set automatically by 4 different connection algorithms. Moreover, taking the correlation coefficient as the evaluation criteria, optimal hierarchical clustering algorithm was selected. With the generation …
Sliding Parameters Calculation Of Agricultural Tracked Robot Based On Ukf And Smo,
2020
College of Information and Computer, Anhui Agricultural University, Hefei 230036, China;
Sliding Parameters Calculation Of Agricultural Tracked Robot Based On Ukf And Smo, Jiao Jun, Kong Wen, Lichuan Gu, Wang Qiang, Ya Gao, Chenchen Yuan
Journal of System Simulation
Abstract: In order to make ensure an Agricultural Tracked Robot (ATR) stable driving in farmland and reduce the slip phenomenon parameters, a novel sliding parameters estimation scheme of ATR based on UKF (Unscented Kalman Filter) and SMO (Sliding Mode Observer) was proposed. The motion equation and measurement equation of ATR were fused by UKF to compensate the measurement error from sensors and to reconstruct the precision pose parameters of ATR. Three slip parameter observers were designed for the sideslip angle, left and right track slip rate, which used the tangent function was used as the switching function to cover chattering …
Experiment Platform For Pure Electric Vehicles And Bi-Directional Power Conversion,
2020
School of Electrical Engineering,Guangxi University, Nanning 530004;
Experiment Platform For Pure Electric Vehicles And Bi-Directional Power Conversion, Shaojian Song, Qingfang Lin, Xiaofeng Lin
Journal of System Simulation
Abstract: As the energy consumption and environmental pollution brought by traditional internal combustion engine vehicles, the experimental platform for pure electric vehicle research is scarce, and most of the research uses virtual vehicle simulation software, which is difficult to accurately reflect the real vehicle system. An experiment platform for LiFePO4 Battery pack (the main energy source) and ultra-capacitor (the auxiliary energy source) hybrid pure electric vehicles and bi-directional power conversion was introduced. The test results show that the introduced experimental platform can be performance test for the key components of pure electric vehicle and energy management, running under …
Implementation And Application Of Coordinate Stretched Pml Under Two-Dimensional Cylindrical Coordinate,
2020
1. Mechanical Engineering College, Shijiazhuang 050003, China; ;
Implementation And Application Of Coordinate Stretched Pml Under Two-Dimensional Cylindrical Coordinate, Anshi Zhu, Zili Chen, Yang Yong, Yunhui Zhen
Journal of System Simulation
Abstract: According to the numerical calculation of electromagnetic field under cylindrical coordinate, the conventional split field absorbing boundary is no longer applicable. The coordinate stretched perfectly matched layers (CS-PML) were applied in the two-dimensional stretched cylindrical coordinate system. The updating equations of Maxwell curl equations in CS-PML were derived by using auxiliary equation method. The simulation results show that theoretical derivation is correct. The reflection coefficient of CS-PML is less than -30 dB, and it is able to meet the precision demand of numerical calculation. Besides, the CS-PML was adopted to investigate the radiation characteristic of the …
Simulation Of Converter Torsional Vibration Based On Multi-Body Dynamics,
2020
Henan University of Science and Technology, Luoyang 471003 China;
Simulation Of Converter Torsional Vibration Based On Multi-Body Dynamics, Hongbin Liu, Yongsheng Shi, Zhang Lei, Hongbiao Han
Journal of System Simulation
Abstract: Torsional vibration of large converter is very easy to cause the transmission gear failure. In order to solve large converters' torsional vibration during working, a converter multi-body dynamic analysis model on rigid-flexible coupling method was built by using of multi-body dynamics simulation software RecurDyn and the finite element analysis software ANSYS. And the dynamic simulation study of this model was carried out. The effects of torsional vibration by different parking methods, parking times, the converters' vibration frequency and the amplitude were obtained through the dynamics simulation calculation. The results show that the torsional vibration amplitude of converter can …
