Comparison Of Hybridizing Options For Solar Heat, Biomass And Heat Storage For Electricity Generation In Spain,
2020
Technological University Dublin
Comparison Of Hybridizing Options For Solar Heat, Biomass And Heat Storage For Electricity Generation In Spain, Cm Iftekhar Hussain, Brian Norton, Aidan Duffy
Articles
Diurnal and seasonal variations of direct solar energy circumscribe locations suitable for sole use of concentrated solar power for electricity generation, whereas to generate electricity at night and during winter months, biomass systems can be used that incur fuel expenditures and may encounter fuel supply discontinuities. Combining solar heat, biomass conversion and heat storage in a hybrid electricity generation plant may overcome the limitations of sole use of any one of these energy sources in specific geographic and/or economic conditions. In this work standalone biomass, hybrid concentrated solar power-biomass and hybrid concentrated solar power-biomass-thermal energy storage power generation systems are …
Forecasting Model For The Transfer Line Exchanger Outlet Temperature Of A Cracking Furnace,
2020
Faculty of Engineering
Forecasting Model For The Transfer Line Exchanger Outlet Temperature Of A Cracking Furnace, Apisara Aungsutarn
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research aims to use an application of a data analytic approach to improve the cracking furnace operation since the current process is operated based on past experience without data consideration leading to an inefficient operation. To improve the process, relationships between process input variables to the transfer line exchanger outlet temperature (TLExOT) were studied and the forecasting models for TLExOT were developed as TLExOT is a key parameter which can represent the process conditions. The models were developed to forecast TLExOT for the same day, 1, 3, and 7 days ahead for short and long term analysis. The significant …
Development Of Efficient Waste Management System For Guwahati City,
2020
Faculty of Engineering
Development Of Efficient Waste Management System For Guwahati City, Prantar Jyoti Talukdar
Chulalongkorn University Theses and Dissertations (Chula ETD)
As on today, in view of the exponential increase of population, fast urbanisation, technical advancements etc., globally, the waste management is becoming a subject of great concern. Apart from dealing with waste only, any waste management system has to encompass many other variants, including - environments, pollution, public health & hygiene, local eco-system etc. So, it is difficult to frame a common global policy or a country’s specific policy to meet all the requirements of the local service providers and customers. Preferentially, any waste management system need to be developed as per the requirements of the local endeavours. In this …
Disaster Damage Categorization Applying Satellite Images And Machine Learning Algorithm,
2020
Old Dominion University
Disaster Damage Categorization Applying Satellite Images And Machine Learning Algorithm, Farinaz Sabz Ali Pour, Adrian Gheorghe
Engineering Management & Systems Engineering Faculty Publications
Special information has a significant role in disaster management. Land cover mapping can detect short- and long-term changes and monitor the vulnerable habitats. It is an effective evaluation to be included in the disaster management system to protect the conservation areas. The critical visual and statistical information presented to the decision-makers can help in mitigation or adaption before crossing a threshold. This paper aims to contribute in the academic and the practice aspects by offering a potential solution to enhance the disaster data source effectiveness. The key research question that the authors try to answer in this paper is how …
Project Management Assignment Tool Using R And Shiny,
2020
Portland State University
Project Management Assignment Tool Using R And Shiny, Ben Stewart, Hoseok Jung, Moses Rawar
Engineering and Technology Management Student Projects
Linear programs such as the R markdown language play an important role in helping to find an optimized solution in various fields of society. This area extends from the optimal distribution channels of coffee shops, which are closely related to our lives, to very important areas such as the deployment of military forces. Through this paper, we will try to find ways to maximize the efficiency and performance of a company by properly allocating project managers suitable for the projects performed by each company according to their capabilities and the requirements of the projects.
Optimization Model For Project Manager Assignments,
2020
Portland State University
Optimization Model For Project Manager Assignments, Neeti Verma, Poonam Ganoskar, Pallavi Gusain, Thanvi Vemulapally, Sai Kalyan, Bala Krishnamoorthy, Sai Kalyan Krishna Gali
Engineering and Technology Management Student Projects
The main objective of every project in an organization is to maximize its profit. This maximization of profit can be achieved through proper allocation of project managers to projects in an organization. But assigning a project to a project manager is still considered a difficult issue and is not yet fully addressed in the literature. However, in high-tech industries various project assignment methodologies are used to assign project managers to multiple projects and reassignment during new-product development projects. The aim of the optimization model created in this project is to develop a framework for project assignments to project managers including …
Employee Engagement And Job Satisfaction’S Impact On Productivity In The Distribution Industry,
2020
Walden University
Employee Engagement And Job Satisfaction’S Impact On Productivity In The Distribution Industry, Jessica Copeland
Walden Dissertations and Doctoral Studies
Productivity deficiencies in distribution services are detrimental to profitability, annually causing billions of dollars in reporting losses industry-wide. Understanding employees’ motivating factors in meeting metric-based expectations is essential to enhancing overall performance. Grounded in the motivation-hygiene theory, the purpose of this correlational study was to examine the relationships among employee engagement, job satisfaction, and productivity within the distribution industry. Electronic survey data were analyzed for 47 participants who completed the Mensah Employee Engagement Survey, Mensah Job Satisfaction Survey, and Utrecht Work Employee Engagement Survey. The results of the multiple linear regression were significant, F(2, 44) = 36.84, p = .001, …
Efficiency Analysis Of A Congested Brazilian Airport Applying Slots Optimization Control: Congonhas Airport Case,
2020
Pontifical Catholic University of Rio Grande do Sul
Efficiency Analysis Of A Congested Brazilian Airport Applying Slots Optimization Control: Congonhas Airport Case, Mariana Franco B. Mendes, Rafael Roco De Araujo, Ana Paula Beck Da Silva Etges, Massoud Bazargan
International Journal of Aviation, Aeronautics, and Aerospace
The current slot allocation mechanism in Brazil, based on the International Air Transport Association (IATA) rules, and its supplementary local regulation The National Civil Aviation Agency (ANAC), displays a few issues and limitations (e.g. slot misuse, allocation inefficiencies). Such issues are particularly present in the case of busy airports that works near their maximum capacity for major parts of the day. This inefficiency problem is generated because of the complexity of slot allocation added to the limited decision support available for the Brazilian system. This study focuses on the implementation of an optimal slot model, based on IATA regulations with …
Utilizing Institutional Data For Curriculum Enhancement To Improve Student Success In Undergraduate Computing Programs,
2020
University of Central Florida
Utilizing Institutional Data For Curriculum Enhancement To Improve Student Success In Undergraduate Computing Programs, Prateek Basavaraj
Electronic Theses and Dissertations, 2020-2023
Student success is one of the widely discussed topics in post-secondary institutions and is measured in terms of the graduation and retention rates of programs. The goal of an educational institution is to achieve maximum student success and, hence, high graduation and retention rates. There are multiple studies on factors affecting student success. One of the factors that contributes to student success is the "program curriculum." Unfortunately, the traditional program curricula at many higher education institutions were developed with a belief or assumption that all students possess equal expertise, skills, and follow a similar learning path. The traditional curricular development …
Multiple Criteria Decision-Making Approach To Support Timber Transportation Planning – Case Study In Brazil,
2020
Humboldt State University
Multiple Criteria Decision-Making Approach To Support Timber Transportation Planning – Case Study In Brazil, Marinna Lopes Ferreira Gomes
Cal Poly Humboldt theses and projects
Timber transportation is one of the costliest activities for a forest company in Brazil and in many other countries, and it is a determining factor for the success of the forest enterprise. Thus, decision support tools are commonly used as methods to reduce these costs. The purpose of this study was to develop and analyze mathematical models to define the weekly timber transport schedule based on the monthly demands of the customers. The goal is to minimize the operational costs of forest transportation related to distances, timber freshness and road qualities. The decision process was made in two steps; the …
การเพิ่มประสิทธิภาพการบริหารงานซ่อมบำรุงเครื่องจักรในงานก่อสร้างถนน
โดยใช้เทคนิคการบริหารโครงการ,
2020
คณะวิศวกรรมศาสตร์
การเพิ่มประสิทธิภาพการบริหารงานซ่อมบำรุงเครื่องจักรในงานก่อสร้างถนน โดยใช้เทคนิคการบริหารโครงการ, นูรอัยณี ประเสริฐดำ
Chulalongkorn University Theses and Dissertations (Chula ETD)
งานวิจัยนี้มีวัตถุประสงค์เพื่อติดตามและควบคุมความก้าวหน้าของงานซ่อมในการเพิ่มประสิทธิภาพการบริหารงานซ่อมบำรุงเครื่องจักรในงานสร้างถนน โดยได้มองแต่ละงานซ่อมเป็นแต่ละโครงการและมีการดำเนินโครงการตามหลักการบริหารโครงการ (Project Management) เครื่องมือสำคัญในการบริหารโครงการเป็นเครื่องมือในการบริหารความก้าวหน้าของโครงการ ได้แก่ วิธีการวิถีวิกฤต (Critical Path Method, CPM) แผนภูมิแกนต์ (Gantt Chart) และ S Curve โดยมีขั้นตอนการดำเนินงานวิจัยดังนี้ 1) รวบรวมอาการเสียและวิเคราะห์หาสาเหตุและกำหนดวิธีการซ่อมและเวลามาตรฐานของการซ่อม 2) วิเคราะห์กิจกรรมของการซ่อมโดยใช้ CPM 3) สร้างแผนภูมิแกนต์เพื่อแสดงแผนงานของแต่ละโครงการซ่อม 4) ควบคุมและติดตามความก้าวหน้าของแต่ละโครงการซ่อมโดยใช้ S-curve 5) หามาตรการหรือแผนเร่งรัดเพื่อให้เป็นไปตามแผนงานของแต่ละโครงการซ่อม งานวิจัยนี้ได้ใช้ระบบฐานข้อมูลเพื่อความสะดวกในการสร้างแผนการซ่อม หลังจากหนึ่งปีของการปรับปรุงพบว่าประสิทธิภาพการบริหารงานซ่อมบำรุงเพิ่มขึ้นโดยระบบหยุดทำงานลดลง เวลาหยุดทำงานของระบบโครงสร้าง (Body System) ลดลงจาก 75 วันเป็น 16 วัน คิดเป็น 78.67% เวลาหยุดทำงานของระบบเครื่องยนต์ (Engine System) ลดลงจาก 122 วันเป็น 54 วัน คิดเป็น 55.74% และเวลาหยุดทำงานของระบบช่วงล่าง (Suspension System) ลดลงจาก 30 วันเป็น 23 วัน คิดเป็น 23.33% เวลาหยุดทำงานของระบบส่งกำลัง (Transmission System) ลดลงจาก 30 วันเป็น 16 วัน คิดเป็น 46.67% เวลาหยุดทำงานของระบบไฮดรอลิก (Hydraulic System) ลดลงจาก 17 วันเป็น 13 วัน เป็น 23.53% เวลาหยุดทำงานของระบบไฟฟ้า (Electrical System) ลดลงจาก 20 วันเป็น 10 วัน เป็น 50% ตามลำดับ
Feasibility Study Of Business Expansion By The Exploitation Through Existhing Strength In A Construction Company,
2020
Faculty of Engineering
Feasibility Study Of Business Expansion By The Exploitation Through Existhing Strength In A Construction Company, Gornekhun Jarupornpanich
Chulalongkorn University Theses and Dissertations (Chula ETD)
A construction company that is called Company-A in this paper has been facing financial difficulty due to irregular cash flow which makes huge risks to the company. To reduce the risks, this study aims to expand the business to real estate to earn regular inflows in return by the exploitation through existing strength as a construction company to increase a competitive advantage to the extended business. This study is conducted by different sources of literature and data collection including academic papers, and the needed data to do a business strategy of a chosen real estate project, and to run a …
การลดของเสียในกระบวนการประกอบสายส่งสัญญาณทางแสง (Active Optical Cable),
2020
คณะวิศวกรรมศาสตร์
การลดของเสียในกระบวนการประกอบสายส่งสัญญาณทางแสง (Active Optical Cable), อาภานวล แก้วกาหลง
Chulalongkorn University Theses and Dissertations (Chula ETD)
งานวิจัยนี้มีวัตถุประสงค์เพื่อปรับปรุงกระบวนการประกอบสายส่งสัญญาณทางแสง ที่ระดับความเร็ว 100Gb/s ซึ่งเป็นเทคโนโลยีการส่งสัญญาณสำหรับดาต้าเซ็นเตอร์ที่เติบโตอย่างต่อเนื่อง โดยประยุกต์ใช้เครื่องมือปรับปรุงคุณภาพตามแนวทางซิกซ์ ซิกมา หรือ DMAIC ประกอบด้วย (1) ระยะนิยามปัญหา พิจารณาอัตราผลิตผลดีในกระบวนการประกอบระดับออพติคอลเอนจิน พบว่ากระบวนการวัดกำลังแสงขาออกมีสัดส่วนของเสียเฉลี่ยต่ำที่สุด ประมาณ 10.29% ซึ่งเป็นตัวชี้วัดว่ากระบวนการวางเลนส์ด้วยวิธีการแบบแพสซิพ (Passive Alignment technique) ซึ่งเป็นวิธีการวางตำแหน่งเลนส์โดยใช้ภาพเอกลักษณ์และการคำนวณระยะสัมพัทธ์ระหว่างกึ่งกลางของเลนส์ และกึ่งกลางของเลเซอร์ VCSEL ยังมีคุณภาพดีไม่เพียงพอ (2) ระยะการวัด การวิเคราะห์ความพ้องกันของระบบวัดกำลังแสงขาออก โดยใช้ข้อมูลแบบนับ (Attribute gage R&R) แสดงให้เห็นว่าระบบวัดมีความสามารถในการวัดซ้ำ, วัดได้อย่างถูกต้อง, และระบบมีความพ้องกันดี (Kappa > 0.9) โดยค่า Cpk และ Ppk จากการวิเคราะห์ความสามารถของกระบวนการ เป็น 0.923 และ 0.423 ตามลำดับ (3) ระยะวิเคราะห์หาสาเหตุของปัญหาด้วยการทดสอบสมมติฐานสัดส่วนประชากร 2 กลุ่ม พบว่ามี 4 ปัจจัยที่ส่งผลต่อสัดส่วนของเสียได้แก่ อัลกอริทึมการหาอไลน์เมนท์ออฟเซ็ต, แผ่นวงจรรวมที่ผลิตจากแหล่งที่ต่างกัน, ระนาบแกน Z หรือบอนด์ไลน์, และอุณหภูมิการอบกาวให้แห้งหลังวางเลนส์ (4) การดำเนินการปรับปรุง และ (5) การติดตามผล ซึ่งหลังการปรับปรุงพบว่าว่าสัดส่วนของเสียลดลงจาก 10.29% เหลือ 1.98% หรือลดลง 80% กระบวนการมี Cpk และ Ppk ดีขึ้นเป็น 1.187 และ 0.687 ตามลำดับ
Technology Business Leaders' Strategies To Increase Employees' Engagement,
2020
Walden University
Technology Business Leaders' Strategies To Increase Employees' Engagement, Desmond J. L. Browne
Walden Dissertations and Doctoral Studies
AbstractEmployee disengagement is costly and reduces an organization's ability to meet its full potential to produce business results. Technology business leaders who have engaged employees can positively alter the company's rapid transformation to be more competitive. Grounded by the social exchange theory, the purpose of this qualitative single case study was to explore strategies 6 technology leaders in the Atlanta metropolitan area use to engage employees. Data were collected through semistructured interviews and company documents. Data were analyzed using Yin's 5-step data analysis process. Three themes emerged: communicate with transparency, provide offerings for training and rewards, and identify and implement …
Energy Forensics Analysis,
2020
West Virginia University
Energy Forensics Analysis, Rupa Das
Graduate Theses, Dissertations, and Problem Reports (ETD)
The energy consumed by a building can reveal information about the occupants and their activities inside the building. This could be utilized by industries and law enforcement agencies for commercial or legal purposes. Utility data from Smart Meter (SM) readings can reveal detailed information that could be mapped to foretell resident occupancy and type of appliance usage over desired time intervals. However, obtaining SM data in the United States is laborious and subjected to legal and procedural constraints. This research develops a user-driven simulation tool with realistic data options and assumptions of potential human behavior to determine energy usage patterns …
Degrader Analysis For Diagnostic And Predictive Capabilities: A Demonstration Of Progress In Dod Cbm+ Initiatives,
2020
Old Dominion University
Degrader Analysis For Diagnostic And Predictive Capabilities: A Demonstration Of Progress In Dod Cbm+ Initiatives, William Baker, Steven Nixon, Jeffrey Banks, Karl Reichard, Kaitlynn Castelle
Engineering Management & Systems Engineering Faculty Publications
This paper presents a modified reliability centered maintenance (RCM) methodology developed by The Applied Research Laboratory at The Pennsylvania State University (ARL Penn State) to meet challenges in decreasing life cycle sustainment costs for critical Naval assets. The focus of this paper is on the requirements for the development of the on-board Prognostics and Health Management (PHM) system with a discussion on the implementation progress for two systems: the high pressure air compressor (HPAC), and the advanced carbon dioxide removal unit (ACRU). Recent Department of Defense (DoD) guidance calls for implementing Condition Based Maintenance (CBM) as an alternative to traditional …
Design For Sustainment: Governance Engineering In Major Acquisition Programs,
2020
U. S. Navy
Design For Sustainment: Governance Engineering In Major Acquisition Programs, William Baker, Kaitlynn M. Castelle, Joseph M. Bradley, Lucas C. Marino
Engineering Management & Systems Engineering Faculty Publications
During acquisition for a sustainment-dominated, major capital asset, decision-making and action to develop the sustainment system must begin early in the acquisition process to sufficiently align the necessary integrated logistics support demanded by these systems. Effective governance improves the likelihood of success for delivery of the asset and accompanying sustainment system to ensure the asset meets expected performance and remains functional over its planned decades-long service life. The service life of a Navy vessel can range from 25 to 50 years. In this case study, we examine the operation of the governance system for major maritime acquisitions, wherein a fleet …
A Review Of Problem Structuring Methods For Consideration In Prognostics And Smart Manufacturing,
2020
Old Dominion University
A Review Of Problem Structuring Methods For Consideration In Prognostics And Smart Manufacturing, Patrick T. Hester, Andrew J. Collins, Barry Ezell, John Horst
Engineering Management & Systems Engineering Faculty Publications
Successful use of prognostics involves the prediction of future system behaviors in an effort to maintain system availability and reduce the cost of maintenance and repairs. Recent work by the National Institute of Standards and Technology indicates that the field of prognostics and health management is vital for remaining competitive in today’s manufacturing environment. While prognostics-based maintenance involves many traditional operations research-centric challenges for successful deployment such as limited availability of information and concerns regarding computational efficiency, the authors argue in this paper that the field of prognostics and health management, still in its embryonic development stage, could benefit greatly …
A Survey Of The Current State Of The Practice In Bridging The Gap Between Engineering Ontologies And Modeling Profiles For Engineering Applications,
2020
University of Texas at El Paso
A Survey Of The Current State Of The Practice In Bridging The Gap Between Engineering Ontologies And Modeling Profiles For Engineering Applications, John Artus
Open Access Theses & Dissertations
Model-Based Systems Engineering holds the promise of enhancing systems engineering tasks and product quality through better, more efficient exchange of data across tools, personnel, and departments, a higher quality of analysis resulting from greater access to cross-discipline data, better coordination between engineering activities and those of program management, and many other benefits. Yet, there is still no standardized method for achieving commonality of architecture vocabulary across projects, across, companies, across industries such that entities operating in the same domain produce products that speak the same technical language. Some specialized domains, such as the Department of Defense (DoD), have developed Architecture …
Weather Prediction: Improving Accuracy Using Data Mining And Forecasting Techniques,
2020
University of Texas at El Paso
Weather Prediction: Improving Accuracy Using Data Mining And Forecasting Techniques, Pedro Marquez
Open Access Theses & Dissertations
This study is focused to provide the insights of weather to understand the significance of weather changes in any parameter. Weather forecasting contributes to the social and economic welfare in many sections of the society. Weather is extremely difficult to predict because it is a complex and chaotic system. This means that small errors in the initial conditions of a forecast grow rapidly and affect predictability. Nowadays, massive real-time data is being generated by IoT devices, radars, weather stations, and satellites. The need to adopt big data analytics in IoT applications is compelling. These two technologies have already been recognized …
