A Heuristic Approach To Storage System Design With Simultaneous Assignment Of Goods,
2016
Universität München
A Heuristic Approach To Storage System Design With Simultaneous Assignment Of Goods, Tobias Staab, Willibad A. Gunthner
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
In the paper at hand, we analyze the planning of manually operated storage systems consisting of different storage areas. When solving design problems like dimensioning or equipment selection, the assignment of goods to storage areas has to be considered. Based on a general model to describe the geometry and performance calculation of a warehouse, we present a heuristic approach to assign goods to storage areas while simultaneously determining the design of the storage areas in a way that generates the lowest running costs. Our approach aims to support planners during the rough planning stage by providing a quick overview of …
Intermodal Hubs In The Physical Internet,
2016
Clemson University
Intermodal Hubs In The Physical Internet, Nadeepa Wickramage, Bill Ferrell
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
Distribution of finished goods is currently an effective but inefficient process that consumes significant quantities of fossil fuel to move empty assets. This results in increased costs that are passed to the consumer and unnecessarily increased carbon emissions. The Physical Internet (PI) is focused on shared logistics that could prove to be an important element of next-generation logistics systems. The idea is to store and transport goods in anonymous standard-sized containers so that transportation and warehousing can be efficiently shared by many companies including competitors. If implemented, this idea has the potential of dramatically increasing efficiency thereby reducing fuel consumption …
Analyzing Order Throughput Times In A Milkrun Picking System,
2016
Erasmus Universiteit Rotterdam
Analyzing Order Throughput Times In A Milkrun Picking System, J. P. Van Der Gaast, M.B. M. De Koster, Ivo J.B.F. Adan
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
E-commerce fulfillment competition evolves around cheap, speedy, and time-definite delivery. Milkrun order picking systems have proven to be very successful in providing handling speed for a large, but highly variable, number of orders. In this system, an order picker picks orders that arrive in real time during the picking process; by dynamically changing the stops on the picker’s current picking route. The advantage of milkrun picking is that it reduces order picking set-up time and worker travel time compared to conventional batch picking systems. This paper is the first in studying order throughput times of multi-line orders in a milkrun …
A Lagrangian Relaxation For Capacitated Single Allocation P-Hub Median Problem With Multiple Capacity Levels,
2016
Yuan-Ze University
A Lagrangian Relaxation For Capacitated Single Allocation P-Hub Median Problem With Multiple Capacity Levels, Ching-Jung Ting, Kuo-Rui Lu
14th IMHRC Proceedings (Karlsruhe, Germany – 2016)
In this paper we consider a capacitated single allocation p-hub median problem with multiple capacity levels (CSApHMPMC) in which the decisions are to determine the location of p hubs and their capacity levels, the single allocation of non-hub nodes to hubs in the logistics network. This problem is formulated as an integer programming model with the objective of minimizing the sum of total transportation cost and fixed cost of the selected p hubs with established capacity levels. A Lagrangian relaxation (LR) approach is proposed to solve the CSApHMPMC. The Lagrangian function that we formulated decomposed the original problem into smaller …
Kinematic Modeling Of An Automated Laser Line Scanning System,
2016
Wayne State University
Kinematic Modeling Of An Automated Laser Line Scanning System, Kiran Sunil Deshmukh
Wayne State University Theses
This research work describes the geometric coordinate transformation in an automated laser line scanning system caused by movements required for scanning a component surface. The elements of an automated laser scanning system (robot, laser line scanner, and the component coordinate system) function as a mechanical linkage to obtain a trajectory on a component surface. This methodology solves the forward kinematics, derives the component surface, and uses inverse kinematic equations to characterize the movement of the entire automated scanning system on point trajectory. To reach a point on the component, joint angles of robot have been calculated. As a result, trajectory …
การลดของเสียในกระบวนการผลิตอุปกรณ์ส่งและรับสัญญาณ,
2016
คณะวิศวกรรมศาสตร์
การลดของเสียในกระบวนการผลิตอุปกรณ์ส่งและรับสัญญาณ, กนกวรรณ บุญฤทธิ์ศักดิ์
Chulalongkorn University Theses and Dissertations (Chula ETD)
งานวิจัยนี้มีวัตถุประสงค์เพื่อลดปริมาณของเสียอุปกรณ์ส่งและรับสัญญาณทางแสงที่เกิดจากค่าแรงเฉือนของการยึดติดระหว่างชิ้นส่วนเลนส์บนแผ่นประกอบวงจรไฟฟ้าชนิดยืดหยุ่น (FPCBA: Flexible Printed Circuit Board Assembly) ซึ่งมีกระบวนการผลิตเริ่มจาก (1) นำแผ่นประกอบวงจรไฟฟ้าชนิดยืดหยุ่น (FPCBA) ที่ผ่านการประกอบวงจรอิเล็กทรอนิกส์แล้วมาทำความสะอาด (2) หยอดกาวชนิด Urethane Acrylate (UA) จำนวน 8 ตำแหน่งบนแผ่น FPCBA (3) ยิงและอบด้วยแสงยูวี (4) หยอดกาวชนิดEpoxyสีดำ (5) อบด้วยความร้อน ดำเนินการวิเคราะห์หาสาเหตุโดย (1) ศึกษาความสัมพันธ์ระหว่างค่าแรงเฉือนที่ได้กับจำนวนการเกิดสีขาวขุ่นของกาวUA บนแผ่น FPCBA (2) ตรวจสอบลักษณะข้อบกพร่องของการยึดติดกาวด้วยกล้องจุลทรรศน์เล็กตรอนแบบส่องกราด (3) วิเคราะห์องค์ประกอบของชนิดคราบกาวและตรวจหาหมู่ฟังก์ชันด้วยเครื่อง FTIR (Fourier Transform Infrared Spectrometer) (4) วิเคราะห์หาขั้นตอนที่ทำให้เกิดของเสีย โดยพิจารณาจากขั้นตอนท้ายไปหน้า (5) ดำเนินการปรับปรุง ผลการศึกษาพบว่า 1) ค่าแรงเฉือนมีค่าลดลงเมื่อมีจำนวนตำแหน่งของกาวUA เปลี่ยนสีจากใสเป็นขาวขุ่นมากขึ้น 2) ลักษณะของเสียกาวUAขาวขุ่นเกิดขึ้นที่ขั้นตอนการทำความสะอาด โดยวิธีทำความสะอาดของพนักงานมีอิทธิพลมากที่สุด ซึ่งลักษณะของเสียกาวUA ขาวขุ่นเกิดจากกาวUA ที่ไม่ยึดติดบน FPCBA ซึ่งเกิดจากการทำความสะอาดที่ไม่เพียงพอ 3) ระยะทางในการทำความสะอาดต่อก้านสำลีและการทำซ้ำที่ใช้เช็ดทำความสะอาด ส่งผลต่อการเกิดกาวUAขาวขุ่น 4) การใช้สารระเหยทำความสะอาดชิ้นงานชนิด IPA (Isopropyl Alcohol) ที่มีจุดเดือด 82.6°C ซึ่งใกล้เคียงกับอุณหภูมิที่ใช้ในขั้นตอนการอบชิ้นงานเท่ากับ90±5°C ซึ่งเป็นขั้นตอนสุดท้าย เป็นสาเหตุให้กาวUA เปลี่ยนสีจากใสเป็นขาวขุ่น เนื่องจากไอระเหยที่ไล่ออกไม่หมด 5) การใช้สารระเหยชนิดเมธนอล (Methanol) ที่มีจุดเดือด 64.7°C ทดแทน IPA พบว่าของเสียจากกาวUA ขาวขุ่นลดลงจากเดิมก่อนศึกษา 33% เป็น 7% และไม่เกิดกาวขาวขุ่นอีกเลย ตามลำดับ
A Holistic Framework For Effective Engineering Leadership Development Using 3d Virtual World Simulation,
2016
University of Central Florida
A Holistic Framework For Effective Engineering Leadership Development Using 3d Virtual World Simulation, Hamed Almalki
Electronic Theses and Dissertations
Problems associated with the limited success of traditional engineering leadership development are the absence of embedded real-life industry case studies in leadership development and incorrect applications of leadership strategies in the various contexts. Though recommended programs for enhancing leadership development exist, they lack an examined framework, especially when it comes to leadership development of undergraduate engineering students. In this research effort, the impact of a framework using 3D virtual world simulation and the 4-D Leadership System to enhance the leadership abilities of undergraduate engineering students at the individual and team levels based on industrial leadership case studies was investigated. The …
A Predictive Model To Identify Caregivers At Risk Of Musculoskeletal Disorders,
2016
University of Central Florida
A Predictive Model To Identify Caregivers At Risk Of Musculoskeletal Disorders, Abdulelah Ali
Electronic Theses and Dissertations
Healthcare systems face several challenges due to the aging workforce, recruitment shortages, increasing patient acuteness, and increasing patient size and weight. The most costly, leading, and prevalent problem in the healthcare industry and nursing professions is work-related Musculoskeletal Disorders (MSDs). MSDs are common among caregivers because of the nature of their work, which requires repetitive heavy physical activity. The development of MSDs among caregivers negatively impacts the quality of care, and incurs high costs such as worker compensation, days away from work, turnover, rehabilitation, and lower productivity. Therefore, it is essential to determine the factors that contribute to musculoskeletal disorder …
The Effect Of Baldrige Performance Excellence Program On Organization's Innovation/Dynamic Capabilities,
2016
University of Central Florida
The Effect Of Baldrige Performance Excellence Program On Organization's Innovation/Dynamic Capabilities, Mohammed Alomairy
Electronic Theses and Dissertations
This dissertation investigated the effect of Baldrige performance excellence program on organization's innovation/dynamic capabilities improvement. According to the literature, there is little or no practical method for building dynamic/innovation capabilities within organizations. The study hypothesizes that Baldrige performance excellence program helps organizations to systematically develop the required dynamic/innovation capabilities for innovation. Twenty-four organizations that had implemented Baldrige program over the past five years participated in this research study. Two types of data were measured/collected from these organizations; Performance excellence data and Innovation capabilities data. To avoid bias in the data collection, the two data were measured and collected at different …
A New Six Sigma Implementation Approach For Power Generation Gas Turbines Repair Process Development,
2016
University of Central Florida
A New Six Sigma Implementation Approach For Power Generation Gas Turbines Repair Process Development, Somesh Ghunakikar
Electronic Theses and Dissertations
Power Generation gas turbines used for heavy duty application mainly constitutes three modules; compressor, combustion and turbine. Typically, all these parts are designed by OEM companies for specific number of hours and cycles (also known as starts) before they become dysfunctional. In addition, Gas Turbine (GT) also have intended repair interval depending upon the type of part application and anticipated damages during service operation. Thus, GT parts need inspections and repair (overhaul) after certain operating hours in order to recondition them so that they can be fit for reoperation to produce power. In this dissertation, a unique six sigma DFSS …
Modeling And Solving Large-Scale Stochastic Mixed-Integer Problems In Transportation And Power Systems,
2016
University of Central Florida
Modeling And Solving Large-Scale Stochastic Mixed-Integer Problems In Transportation And Power Systems, Zhouchun Huang
Electronic Theses and Dissertations
In this dissertation, various optimization problems from the area of transportation and power systems will be respectively investigated and the uncertainty will be considered in each problem. Specifically, a long-term problem of electricity infrastructure investment is studied to address the planning for capacity expansion in electrical power systems with the integration of short-term operations. The future investment costs and real-time customer demands cannot be perfectly forecasted and thus are considered to be random. Another maintenance scheduling problem is studied for power systems, particularly for natural gas fueled power plants, taking into account gas contracting and the opportunity of purchasing and …
Assessing The Effect Of Social Networks On Employee Creativity In A Fast-Food Restaurant Environment,
2016
University of Central Florida
Assessing The Effect Of Social Networks On Employee Creativity In A Fast-Food Restaurant Environment, Mitchell Rabinowitz
Electronic Theses and Dissertations
Creativity has been widely recognized as critical to the economic success of organizations for over 60 years. Today, it is considered to be the most highly prized "commodity" of businesses. As such, there have been numerous efforts to better understand creativity with the goal of increasing individual creativity and therefore improving the economic success of organizations. An emerging area of research on creativity recognizes creativity as a complex, social process that is dependent upon many factors, including those of an environmental nature. In support of this perspective, a growing amount of research has investigated the effect of social networks on …
Data Mining Models For Tackling High Dimensional Datasets And Outliers,
2016
University of Central Florida
Data Mining Models For Tackling High Dimensional Datasets And Outliers, Orestis Panos Panagopoulos
Electronic Theses and Dissertations
High dimensional data and the presence of outliers in data each pose a serious challenge in supervised learning. Datasets with significantly larger number of features compared to samples arise in various areas, including business analytics and biomedical applications. Such datasets pose a serious challenge to standard statistical methods and render many existing classification techniques impractical. The generalization ability of many classification algorithms is compromised due to the so-called curse of dimensionality. A new binary classification method called constrained subspace classifier (CSC) is proposed for such high dimensional datasets. CSC improves on an earlier proposed classification method called local subspace classifier …
Using Case-Based Reasoning For Simulation Modeling In Healthcare,
2016
University of Central Florida
Using Case-Based Reasoning For Simulation Modeling In Healthcare, Khaled Alshareef
Electronic Theses and Dissertations
The healthcare system is always defined as a complex system. At its core, it is a system composed of people and processes and requires performance of different tasks and duties. This complexity means that the healthcare system has many stakeholders with different interests, resulting in the emergence of many problems such as increasing healthcare costs, limited resources and low utilization, limited facilities and workforce, and poor quality of services. The use of simulation techniques to aid in solving healthcare problems is not new, but it has increased in recent years. This application faces many challenges, including a lack of real …
Optimal Energy Management System For A Net Zero Building Using Multi-Agent Systems Approach,
2016
University of Texas at El Paso
Optimal Energy Management System For A Net Zero Building Using Multi-Agent Systems Approach, Arzhang Ghassemi Pashakalaei
Open Access Theses & Dissertations
Buildings have a significant impact on energy usage and the environment. Much of the research in architectural sustainability has centered on economically advanced countries because they consume the most energy and have the most resources. However, sustainable architecture is important in developing countries, where the energy consumption of the building sector is increasing significantly. The aims of this Thesis are investigating using the hybrid system, which formed by interconnecting two source of renewable energy as solar (PV arrays) and wind (turbine) along with city grid for compensation purposes wherever it is required. In this Thesis, after literature review, we consider …
A Novel Approach To Control Corrosion Behaviour On Bio Materials Using Taguchi Method (Design Of Experiments),
2016
University of Texas at El Paso
A Novel Approach To Control Corrosion Behaviour On Bio Materials Using Taguchi Method (Design Of Experiments), Sai Dhiresh Kilari
Open Access Theses & Dissertations
In the present work, the Taguchi method, from the design of experiment (DOE) has been used to optimize the dip testing method to test the corrosion resistance of bio degradable materials such as PLA (Polylactic acid)and PCL (Polycaprolactone). A L9 (9) orthogonal array of Taguchi design was used, which involves nine experiments for three parameters (pH, sample, temperature) with three levels was used. Corrosion resistance in various pH change of HCL solution was evaluated by dip tests at various temperatures. Analysis of variance (ANOVA) is performed on the obtained measured data and S/N (signal to noise) ratios. The lower the …
Enhancing Surface Finish Of Fused Deposition Modeling Parts Through Targeted Chemicals And Design Of Experiments,
2016
University of Texas at El Paso
Enhancing Surface Finish Of Fused Deposition Modeling Parts Through Targeted Chemicals And Design Of Experiments, Saurabh Nayyar Nayyar
Open Access Theses & Dissertations
Fused Deposition Modeling (FDM) is one of the most popular rapid prototyping (RP) technologies due to its low operational cost, high fabrication speed, and range of applications served. However, FDM fabricated parts generally have poor surface finish quality which have limited their utilization in end-use applications. To enhance surface quality of FDM materials, several researchers have regulated key process parameters using the FDM material, Acrylonitrile Butadiene Styrene (ABS), with varying results. The main goal of this research is to investigate the effects of a post-fabrication chemical treatment process on the surface roughness for FDM parts of the FDM material ULTEM. …
Design Of Experiments-Based Scara Robot Parameter Evaluation For Embedding Electronics Into 3d Print,
2016
University of Texas at El Paso
Design Of Experiments-Based Scara Robot Parameter Evaluation For Embedding Electronics Into 3d Print, Sreekara Charith Boppana
Open Access Theses & Dissertations
Additive manufacturing processes combined with enhanced technologies for electronics production enables a highly flexible manufacturing of personalized 3D electronic devices. Due to the enormous progress within the last years, these technologies made their way from prototyping towards manufacturing. The growing request for products manufactured in batch size, making use of a robot to incorporate the electronic components necessary to make functional 3-Dimensional-Structural Electronics will extend the mass production possibilities. There is significant interest in automation of a process is which parameters are influential in the occurrence of assembly defects and which adjustments should be made to those variables to reduce …
Assessing Safety Culture Among Personnel In Governmental Construction Sites At Saudi Arabia: A Quantitative Study Approach,
2016
University of Central Florida
Assessing Safety Culture Among Personnel In Governmental Construction Sites At Saudi Arabia: A Quantitative Study Approach, Omar Alrehaili
Electronic Theses and Dissertations
Safety is an essential issue for organizations to survive, especially for hazardous industries such as the construction industry. The construction industry is considered to be one of the major industries that help in the growth of the economy and the infrastructure of all countries. Recently, scholars have paid increasing attention to the concept of safety culture due to its role in decreasing the occurrences of accidents and injuries. Safety culture has become the focus of all industries and has received much attention in recent years, especially within the construction industry. Absence of this culture is a major cause of injuries …
การปรับปรุงกระบวนการออกแบบชุดสายไฟในรถยนต์,
2016
คณะวิศวกรรมศาสตร์
การปรับปรุงกระบวนการออกแบบชุดสายไฟในรถยนต์, ทิวารัตน์ สวัสดี
Chulalongkorn University Theses and Dissertations (Chula ETD)
งานวิจัยฉบับนี้ ทำการศึกษาเกี่ยวกับบริษัท ออกแบบสายไฟในรถยนต์ที่ให้ความสำคัญในเรื่องความพึงพอใจของลูกค้า ซึ่งเป็นหนึ่งในปัจจัยที่สำคัญที่สุดในการออกแบบผลิตภัณฑ์ ด้วยเหตุนี้บริษัท จึงใช้วิธีการทั้งหมดในการออกแบบกระบวนการออกแบบผลิตภัณฑ์ตามความต้องการที่หลากหลายของลูกค้า จึงทำให้มีการเปลี่ยนแปลงการออกแบบเป็นจำนวนมาก งานวิจัยนี้มีวัตถุประสงค์เพื่อปรับปรุงกระบวนการออกแบบชุดสายไฟในรถยนต์ที่มีผลต่อกำหนดการผลิตโดยใช้การวิเคราะห์ Fault Tree และ Failure Mode and Effect Analysis (FMEA) เป็นเครื่องมือหลัก FTA ใช้สำหรับการวิเคราะห์สาเหตุหลักและใช้ FMEA เพื่อจัดลำดับความสำคัญสูง (RPN) ซึ่งแสดงให้เห็นถึงความสำคัญของปัจจัยต่างๆในชุดสายไฟในรถยนต์ที่มีผลกระทบสูงต่อการออกแบบชุดสายไฟในรถยนต์ และหลังจากมีการปรับปรุงกระบวนการออกแบบและควบคุมปัจจัยที่ส่งผลเสียต่อกระบวนการออกแบบจะพบการขอเปลี่ยนแปลงการออกแบบที่ลดลงจาก 0.26 ครั้ง ต่อการออกแบบ 1 ครั้ง เป็น 0.06 ครั้ง ต่อการออกแบบ 1 ครั้ง แสดงถึงกระบวนการออกแบบที่ถูกปรับปรุงให้สามารถสร้างความพึงพอใจแก่ลูกค้าที่มีต่อผลิตภัณฑ์มากขึ้น
