Operations Research, Systems Engineering and Industrial Engineering Commons^™

A Production Planning System For A Lubricating Oil Production Company, Panisorn Saerevatanawoot

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of this research is to develop a production planning system for a lubricating oil company. The company is facing a problem of excessive inventory of finished goods and packaging materials resulting from the minimum stock levels that were established by its customer. The scope of the system covers class A products, consisting of 14 of 45 products in the company, and their packaging materials. The causes of the inventory problem were brainstormed with the use of Cause-and-Effect Diagram, then the Cause-and-Effect Matrix was used to identify potential root causes. It was concluded that master production schedule (MPS) of …

Scheduling In A Textile Dyeing Factory, Nattakarn Uttamapinant

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of this research is to develop a scheduling system for a textile dyeing factory in order to reduce production lead time and late deliveries. The factory has 9 un-identical groups of machines with capacities ranging from 10 kg to 800 kg. On average, it processes 140 jobs per week. It has a problem of late delivery caused by jobs that have different fabrics to be dyed to the same colors and must be dyed together in the same dyeing machine. Scheduling these jobs is complicated because a large portion of them will need re-dyeing and it is not …

Efficiency Improvement Of Picking Process At An Automotive Parts Retailer Warehouse, Phunyisa Saerevatanawoot

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objective of this research is to improve efficiency of picking process to meet customer expectation, hence, increase customer satisfaction and trust. This research proposes three phases of methodology, which are define, propose and implement phase, to increase efficiency of picking process by controlling and minimising picking time. Define phase describes warehouse picking process activities and procedures and defines problems and their effects. Key performance indices are brainstormed based on the problems to identify factors that are able to indicate level of picking process efficiency. In propose phase, customer behaviours, customer types, and time expectations are observed. Opportunities for improvement …

Determination Of Interconnection Rate For Thailand's Mobile Telecommunication Industry, Thanoot Yamajinda

Chulalongkorn University Theses and Dissertations (Chula ETD)

Relatively high and unbalanced level of termination rates can cause conflict between operators, and create burden for the consumers. It is within the regulator’s responsibility to step in and intervene with the situation. This thesis aims to find an appropriate solution to determine the mobile interconnection rate of Thailand. The calculation utilized a bottom-up cost model developed with modern efficient operation assumption. Three possible costing approaches, i.e. Long Run Incremental Cost (LRIC), Long Run Average Incremental Cost (LRAIC), and Long Run Average Incremental Cost Plus (LRAIC+) were studied. LRAIC+ was chosen as the standard basis for the calculation framework to …

Production Process Improvement For The Marinated Pork Factory, Patcharaporn Musuwan

Chulalongkorn University Theses and Dissertations (Chula ETD)

A marinated pork manufacturing company of Thailand has been wanting to expand its sales channels by moving its marinated pork products from solely lower market sales channel into Thailand’s hypermarket in order to attract more customer target groups. To do so, the company needed to adapt all Good Manufacturing Practices (GMP) standards in its factories and become GMP certified by Thailand’s Food and Drug Administration (FDA) to satisfy the requirement of most popular hyper markets in Thailand. The aim of this thesis is to implement solutions that would help this marinated pork company achieve GMP standards and improve its production …

E-Quality Control Using 3d Reconstruction And 3d Measurement, Jun Zheng

Open Access Theses & Dissertations

Recently more and more industrial applications use image acquisition to improve product manufacturing. The observed growth in the last few years is mainly due to the great advances in acquisition devices which are now affordable for more industrialists. Moreover, the increasing demands in the quality requirements of the products are a great stimulus to apply vision tools which allow a better understanding of the impact of the manufacturing process on the product quality. Vision tools have been used in many industrial fields. But the traditional 2D vision is not as reliable as 3D measurement due to the limitations of the …

Stochastic Optimization For Integrated Energy System With Reliability Improvement Using Decomposition Algorithm, Yuping Huang

Electronic Theses and Dissertations

As energy demands increase and energy resources change, the traditional energy system has been upgraded and reconstructed for human society development and sustainability. Considerable studies have been conducted in energy expansion planning and electricity generation operations by mainly considering the integration of traditional fossil fuel generation with renewable generation. Because the energy market is full of uncertainty, we realize that these uncertainties have continuously challenged market design and operations, even a national energy policy. In fact, only a few considerations were given to the optimization of energy expansion and generation taking into account the variability and uncertainty of energy supply …

A Curricula Assessment And Improvement Quantitative Model For Higher Education: A Design For Six Sigma Methodology, Abdullah Halawany

Electronic Theses and Dissertations

Curricula assessment is an integrated process to assist higher education institutions in addressing the challenges in a designated field of study and in exploring the opportunities to better educate and prepare their students for an increasingly complex world. Although assessment as a topic has been researched extensively, there has been a lack of quantitative tools that address the requirements of many of the stakeholders that may be critical to the curriculum design and assessment processes. This research proposes the utilization of Design for Six Sigma (DFSS) to develop a quantitative model for curriculum assessment and improvement for higher education institutions. …

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

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

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

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 …

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, …

Decision Making Model For Foreign Object Debris/Damage (Fod) Elimination In Aeronautics Using Quantitative Modeling Approach, Jose Jaime Lafon

Open Access Theses & Dissertations

(FOD) Foreign Object Debris/Damage has been a costly issue for the commercial and military aircraft manufacturers at their production lines every day. FOD can put pilots, passengers and other crews' lives into high-risk. FOD refers to any type of foreign object, particle, debris or agent in the manufacturing environment, which could contaminate/damage the product or otherwise undermine quality standards. Nowadays, FOD is currently addressed with prevention programs, elimination techniques, and designation of FOD areas, controlled access to FOD areas, restrictions of personal items entering designated areas, tool accountability, etc. All of the efforts mentioned before, have not shown a significant …

Part Detection And Classification Using Integrated Machine Vision And Knowledge Based Expert System, Cristian Giovanni Lopez Ulloa

Open Access Theses & Dissertations

Manufacturing cost is a topic of interest in the automotive manufacturing industry. Even though rework and repair methods are acceptable processes in manufacturing, there is little investigation done on the classification and cost parameters of a repairable or re-workable part. Having a non-conforming part indicates a loss in revenue to a manufacturing company, thus the need to repair or rework the part. Repair and rework processes take non-conforming products of a manufacturing line and bring the parts back to conforming stage. In this study, the proposed system establishes a connection between detection of defects, classification of them based on defect …

Outsourcing Management Of Engineering Work In Petroleum Exploration And Production, Panunee Thongprasom

Chulalongkorn University Theses and Dissertations (Chula ETD)

Since there is no official outsourcing management system in the studied Petroleum Exploration and Production company, many outsourcing projects under the studied company have been facing with a lot of schedule delays. Therefore, the purpose of this research is to find an appropriate and efficient outsourcing management system which consists of workflow and procedure including supporting tools and techniques for using with outsourcing engineering work in the studied company to minimize the delays. The approach is to review outsourcing management practices and recommended tools from literatures and gather information from the studied company’s outsourcing experiences including best practices to develop …

Simulating Real-World Work Experience In Engineering Capstone Courses, Thomas H. Deagostino, Vukica M. Jovanovic, M. Brian Thomas

Engineering Technology Faculty Publications

Experiential learning and cooperative education provide students with the necessary tools to succeed in the workplace by simulating their future working environment. Various studies have shown that many graduates have gaps related to their so called "soft skills", which are related to teamwork, time management, working under pressure and tight deadlines. The main purpose of the inclusion of the industry expert in senior design discussions is to provide meaningful feedback through a competitive led by industry practitioners. In this simulation, the senior engineering students take on the role of actual engineering job functions, on a demanding, continuous basis for the …

Enhancing Agility Of Supply Chains Using Stochastic, Discrete Event And Physical Simulation Models, Alok K. Verma

Engineering Technology Faculty Publications

Managing supply chains in today’s distributed manufacturing environment has become more complex. To remain competitive in today’s global marketplace, organizations must streamline their supply chains. The practice of coordinating the design, procurement, flow of goods, services, information and finances, from raw material flows to parts supplier to manufacturer to distributor to retailer and finally to consumer requires synchronized planning and execution. Efficient and effective supply chain management assists an organization in getting the right goods and services to the place needed at the right time, in the proper quantity and at acceptable cost. Managing this process involves developing and overseeing …

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 …

การศึกษากลยุทธ์ทางธุรกิจของมิเตอร์อัจฉริยะ, ธนพินท์ มังคละภาณุพงศ์

Chulalongkorn University Theses and Dissertations (Chula ETD)

วิทยานิพนธ์เล่มนี้เป็นการศึกษาแผนกลยุทธ์ทางธุรกิจของมิเตอร์อัจฉริยะ ที่ใช้ Balanced Scorecard ในการแปลงกลยุทธ์ไปสู่ภาคปฏิบัติ โดยมีวัตถุประสงค์เพื่อหาดัชนีชี้วัด (Key Performance Indicator: KPI) และ ปัจจัยหลักแห่งความสำเร็จ (Critical Success Factor: CSF) สำหรับขั้นตอนในการทำ Balanced Scorecard จะเริ่มจากการกำหนดวิสัยทัศน์ และพันธกิจ ของธุรกิจมิเตอร์อัจฉริยะ หลังจากนั้นทำการวิเคราะห์ SWOT Analysis แล้วจับคู่ให้อยู่ในรูป TOWS Matrix เพื่อหาวัตถุประสงค์และตัวชี้วัดในการจัดทำแผนที่เชิงกลยุทธ์ (Strategy Map) โดยมีกรอบการวัดและประเมินผลของธุรกิจ ผ่านมุมมองการวัดผล 4 ด้าน คือ มุมมองการเรียนรู้และการเติบโต มุมมองกระบวนการภายใน มุมมองด้านลูกค้า และมุมมองด้านการเงิน โดยมีดัชนีชี้วัดทั้งหมด 32 ตัว และมีปัจจัยหลักแห่งความสำเร็จทั้งหมด 20 ตัว ตัวอย่างเช่นดัชนีชี้วัดและปัจจัยหลักสู่ความสำเร็จของมุมมองด้านการเรียนรู้และเติบโตคือ ความปลอดภัยของพนักงาน และจำนวนครั้งของการเกิดอุบัติเหตุในสายการผลิต มุมมองด้านกระบวนการภายในคือ อัตราของเสียจากการผลิตและจำนวนของเสียที่เกิดขึ้นในสายการผลิต มุมมองด้านลูกค้า คือ อัตราการส่งคืนสินค้าและจำนวนมิเตอร์อัจฉริยะที่ถูกส่งคืน และมุมมองด้านการเงิน คือ อัตราส่วนรายได้ในส่วนของลูกค้ารายใหม่และจำนวนลูกค้ารายใหม่ที่เพิ่มขึ้น โดยขั้นตอนสุดท้ายจะเป็นการกำหนดแผนปฏิบัติการ (Action Plan) ของธุรกิจเพื่อกำหนดหน้าที่ความรับผิดชอบ ขั้นตอนในการดำเนินงาน การควบคุมและติดตามผลการดำเนินงาน ผลจากการศึกษาโดยการสำรวจความคิดเห็นจากผู้เชี่ยวชาญพบว่า แผนยุทธศาสตร์และกลยุทธ์จะใช้ได้ในช่วงการเริ่มต้นธุรกิจ โดยมีแบบแผนปฎิบัติการในการควบคุมการดำเนินงานตามตัวชี้วัดในแต่ละมุมมอง

การศึกษาปัจจัยที่ก่อให้เกิดตามดในกระบวนการหล่อฉีดแรงดันสูง, แพรวดี แก้วคงคา

Chulalongkorn University Theses and Dissertations (Chula ETD)

วัตถุประสงค์ของงานวิจัยนี้คือการศึกษาปัจจัยที่ส่งผลต่อตามดในกระบวนการหล่อฉีดแรงดันสูงอลูมิเนียม R14 สำหรับคอมเพรสเซอร์ของชิ้นส่วนยานยนต์ ที่แรงดันในการฉีด 75 ถึง 85 เมกกาปาสคาล ความเร็วในการเคลื่อนที่ของลูกสูบที่ความเร็วต่ำ 0.16 ถึง 0.30 เมตรต่อวินาที ความเร็วในการเคลื่อนที่ของลูกสูบที่ความเร็วสูง 1.8 ถึง 3.0 เมตรต่อวินาที ระยะที่ลูกสูบเคลื่อนที่ด้วยความเร็วสูง 320 ถึง 340 มิลลิเมตร และแรงดันสุญญากาศ -93.0 ถึง -100.0 กิโลปาสคาล โดยการตรวจสอบการวิเคราะห์พื้นผิวตอบสนองกับวิธีบ็อกซ์-เบหน์เคน การออกแบบเพื่อศึกษาปัจจัยและความสัมพันธ์ของพารามิเตอร์และหาสภาวะที่เหมาะสมเพื่อลดสัดส่วนตามดให้เกิดขึ้นน้อยที่สุด จากผลการทดลองพบว่าทั้ง 5 ปัจจัยมีอิทธิพลต่อการเกิดข้อบกพร่องประเภทตามดอย่างมีนัยสำคัญที่ระดับความเชื่อมั่น 95 เปอร์เซ็นต์ ส่งผลให้สัดส่วนของเสียตามดลดลงเหลือ 5.18 เปอร์เซ็นต์จากการตั้งค่าสภาวะที่เหมาะสมจากการทดลองได้แก่ แรงดันในการฉีดคือ 85 เมกกะปาสกาล การเคลื่อนที่ของลูกสูบที่ความเร็วต่ำคือ 0.30 เมตรต่อวินาที การเคลื่อนที่ของลูกสูบที่ความเร็วสูงคือ 2.49 เมตรต่อวินาที ระยะที่ลูกสูบเคลื่อนที่ด้วยความเร็วสูงคือ 326.81 มิลลิเมตร และแรงดันสุญญากาศที่ -97.28 กิโลปาสกาล

Thermolysis And Kinetics Of Scrap Tyre And Bagasse For Energy Utilization, Petro Ndalila

Tanzania Journal of Engineering and Technology (TJET)

The increase of energy demand has brought concern to find alternative fuel that will at least sustain the requirement. Bagasse and scrap tyre are waste generated in our industrial activities, which can be used in energy production to subsidize the demand. This paper, aim to study the decomposition behaviour and kinetics of biomass (bagasse) and scrap tyre as preliminary stage of fuel sample analysis to be considered for energy production in gasification/combustion or pyrolysis facilities. The behaviour demonstrated with thermogravimetric analyzer (TGA), shows that all samples have high volatile amount release, 84.21% for bagasse and 85.08% for scrap tyre, which …

Analysis Of Factors Affecting Technological Innovativeness In Engineering Enterprises In Tanzania, Emanuel Mjema

Tanzania Journal of Engineering and Technology (TJET)

This paper discusses the technological innovativeness in engineering enterprises in Tanzania and analyses the factors affecting the innovativeness. It starts by analyzing various concepts regarding innovation, then analyzed from documentary review factors affecting innovativeness and then analyzed the innovativeness in Tanzanian enterprises. From the documentary review it was learnt that the following key factors influence technological innovativeness: Existence of innovation management; Existence of market to absorb the products of innovation; Existence of partnership between the universities and the firms; Existence of positive culture and politics towards innovation; The government playing its role to influence innovation; Existence of the right knowledge; …

Modeling Reliability Growth In Accelerated Stress Testing, Jason K. Freels

Theses and Dissertations

Qualitative accelerated test methods improve system reliability by identifying and removing initial design flaws. However, schedule and cost constraints often preclude sufficient testing to generate a meaningful reliability estimate from the data obtained in these tests. In this dissertation a modified accelerated life test is proposed to assess the likelihood of attaining a reliability requirement based on tests of early system prototypes. Assuming each prototype contains an unknown number of independent competing failure modes whose respective times to occurrence are governed by a distinct Weibull law, the observed failure data from this qualitative test are shown to follow a poly-Weibull …

S1nn Gmbh & Co. Kg (Automobile Connectivity Module 1.1), Tyler Alexander Ball

Industrial and Manufacturing Engineering

The results of this report show how when diagnostics were run on the Connectivity Module 1.1, the problems discovered such as potential short-circuiting, 90-degree copper tracing angles, and components overheating/tombstoning were addressed. By using the method of “DMAIC,” which stands for Design, Measure, Analyze, Implement, Control, successful corrections were made. In the first design of the Printed Circuit Board (PCB), 1454 critical issues were found. With the newly designed PCB’s modifications being implemented, only 12 critical issues remained, which were later addressed and corrected. The results from this report are a functional Automobile Connectivity Module 1.1.

Project Management Of High School Shadow And Building An Engineer Day, Andrea M. Carroll

Industrial and Manufacturing Engineering

Building an Engineer Day and High School Shadow are semi-annual outreach events hosted by Cal Poly’s Society of Women Engineers section during fall and spring quarters. The events focus on encouraging women and minorities to take an interest in engineering. These events are the two largest outreach events hosted by The Society of Women Engineers and need to run smoothly in order to provide student attendees with a meaningful experience.

Building an Engineer Day and High School Shadow are currently un-organized and un-planned, which leads to problems with officer retention, increase in expediting process and a low attendance rate at …

Equipment Maintenance And Replacement Decision Making Processes, Michael W. Gage

Industrial and Manufacturing Engineering

This project contains recommendations for the decision making processes for support and production equipment maintenance and replacement for a large defense contractor. Recent literature has been reviewed to provide perspective on current trends in the field. A complete evaluation of their current processes and systems is included with recommendations on areas for improvement. A decision support system is also proposed to supplement their existing decision making.

Fixture For Carbon Fiber Spar Of Human Powered Helicopter, David John Ikeda, Luis Gonzalez

Industrial and Manufacturing Engineering

The following report describes our contribution to Cal Poly Human Powered Helicopter for the 2012 competition for the Sikorsky Prize offered by the American Helicopter Society. In order to win this prize the team needs to build and fly a human powered helicopter for more than 60 seconds reaching and altitude of 3 meters while staying in a 10 meter square box. Our team was created to support the integration of Carbon Fiber parts, specifically the carbon fiber spars with rotor and landing gears. Precise cutting and accurate drilling was needed and our team was tasked with creating a fixture …

Disaster Relief Models: Location Of Points Of Distribution, Othman Boudhoum

Industrial Engineering Undergraduate Honors Theses

This project consists of developing a Location Allocation model that focuses on determining the locations of relief supply Points of Distribution (PODs) after a natural disaster and how to assign demand points to them. According to FEMA, PODs are “centralized locations where the public picks up life sustaining commodities following a disaster or emergency” [1]. After each disaster, decisions have to be made to ensure a good delivery of resources in a timely manner. The road infrastructure may be damaged due to the disaster. Some roads might become inoperable, and some bridges are expected to fail. The model studied in …

Single-Depot Vehicle Routing Problem For Home Delivery Of Pharmaceutical Products, Kimberly Starr Harms

Masters Theses

Some retail pharmacies offer home delivery services to establish a competitive advantage in the growing healthcare market. The handling of orders for home delivery includes several internal and external processing and transportation activities. In this work, models were developed for use in a pharmacy delivery system to assist personnel in their daily activities. This work includes standard operating procedures for picking, packing and loading of delivery orders and the assignment and routing of vehicles to deliver customer orders. Results from simulated delivery areas identified interesting tradeoffs when comparing densely populated areas to sparsely populated areas. In addition, recommendations for order …