Engineering Commons^™

การจัดการความต้องการในการเดินทางเพื่อลดใช้รถยนต์ส่วนบุคคล, ภาธินันท์ ไทยทัตกุล, พัฒนพงษ์ แสงหัตถวัฒนา, อรณิชา อนุชิตชาญชัย

Journal of Transportation and Logistics (TRANSLOG)

การลดการใช้รถยนต์นั้นจำเป็นต้องมีการจัดการความต้องการในการเดินทาง (Travel Demand Management: TDM) เพื่อโน้มน้าวให้ผู้เดินทางเลือกใช้รูปแบบอื่นในการขนส่ง เช่น ระบบ การขนส่งสาธารณะ ดังนั้นโครงการวิจัยนี้จึงมุ่งเน้นระบุกลยุทธ์หรือมาตรการในการลดการใช้รถยนต์ที่ เป็นไปได้โดยกำหนดกลุ่มตัวอย่างเป็นบริษัทที่ตั้งอยู่ในอาคารสำนักงานขนาดใหญ่ในกรุงเทพมหานคร โดยมาตรการที่จะนำมาใช้ในการควบคุมนั้นประกอบไปด้วยมาตรการเชิงโครงสร้าง (Structural Intervention) และมาตรการเชิงจิตวิทยา (Psychological Intervention) เพื่อผลักดันและโน้มน้าวให้ ผู้เดินทางลดการใช้รถยนต์และเปลี่ยนไปใช้รูปแบบการขนส่งอื่น ในการระบุมาตรการที่เหมาะสม ได้ทำ การสำรวจพฤติกรรมการเดินทางและผลตอบรับต่อมาตรการต่างๆ ผ่านแบบสอบถาม จากผลการสำรวจ พบว่ามาตรการที่มีศักยภาพต่อการลดปริมาณการใช้รถยนต์ส่วนบุคคลเป็นมาตรการเชิงโครงสร้าง ได้แก่ มาตรการอุดหนุนค่าใช้จ่ายในการเดินทางด้วยระบบขนส่งสาธารณะ และ มาตรการยืดหยุ่นเวลาทำงาน

การประเมินศักยภาพความเข้มแข็งขององค์กรปกครองส่วนท้องถิ่นด้านงานทางหลวงท้องถิ่น, อาคม ตันติพงศ์อาภา, นิติกร คล้ายชม, ทวีศักดิ์ ปานจันทร์, กฤษฎิ์ เมลืองนนท์, ญาณพล แสงสันต์, อรรณนพ พึ่งเชื้อ, พิมพวรรณ วิเศษศรี, รัฐนันท์ เอี่ยนเล่ง, ปวโรธร ไชยเพ็ชร, วีระชัย วงษ์วีระนิมิตร

Journal of Transportation and Logistics (TRANSLOG)

กรมทางหลวงชนบท มีภารกิจหลักในการดูแลถนนสายรองที่สำคัญ และมีภารกิจอีกประการตาม พ.ร.บ. กำหนดแผนและขั้นตอนการกระจายอำนาจให้แก่ อปท. พ.ศ. 2542 และแผนปฏิบัติการกำหนดขั้นตอนการกระจายอำนาจให้แก่ องค์กรปกครองส่วนท้องถิ่น (อปท.) ฉบับที่ 2 (พ.ศ. 2551) โดยเตรียมความพร้อมให้แก่ อปท. จัดทำคู่มือปฏิบัติงานและฝึกอบรมให้ความรู้แก่บุคลากรของ อปท. รวมทั้งให้คำปรึกษา แนะนำช่วยเหลือ ควบคุมทางวิชาการ และติดตามประเมินผลให้เป็นไปตามมาตรฐาน ซึ่งปัจจุบัน ยังไม่มีตัวชี้วัดที่สะท้อนถึงระดับศักยภาพ/ความเข้มแข็งของ อปท. ด้านงานทางหลวงท้องถิ่น การศึกษาครั้งนี้ มีวัตถุประสงค์เพื่อศึกษาระดับศักยภาพ/ความเข้มแข็งของ อปท. ด้านงานทางหลวงท้องถิ่น และติดตามประเมินผลจากกลุ่มตัวอย่าง อปท. ที่ได้คัดเลือกไว้ โดยจําแนกเป็นราย อปท. และจําแนกกลุ่มตามประเภท/ขนาดของ อปท. จํานวน 442 แห่ง โดยวิเคราะห์ข้อมูลเชิงปริมาณ สถิติที่ใช้ได้แก่ ร้อยละ และค่าเฉลี่ย ผลการศึกษาพบว่า อปท. ส่วนใหญ่รับทราบเกี่ยวกับในภาพรวม ระดับศักยภาพ/ความเข้มแข็งของ อปท. ในภาพรวมเท่ากับ 2.62 จากคะแนนเต็ม 5.00 โดยตัวชี้วัดร้อยละของถนนในความรับผิดชอบของ อปท. ที่ไดลงทะเบียนเป็นทางหลวงท้องถิ่นได้คะแนนสูงสุดเท่ากับ 3.95 คะแนน ตัวชี้วัดระดับการประเมินสภาพถนนและความปลอดภัยมีคะแนนเท่ากับ 3.81 คะแนน ร้อยละของการนําความรู้ไปใช้ประโยชน์ เท่ากับ 1.47 และร้อยละของเครื่องมือ/เครื่องจักร/อุปกรณ์ในการก่อสร้างหรือซ่อมบํารุง ที่อยู่ในสภาพใช้งาน เท่ากับ 1.26 คะแนน ซึ่ง อปท. ในระดับเทศบาลนครมีความเข้มแข็งมากที่สุดที่ระดับคะแนน 3.78 คะแนน ในขณะที่ อปท. ในระดับ อบต. มีความแข้มแข็งน้อยที่สุดที่ระดับคะแนน 2.46 คะแนน อปท. โดยส่วนใหญ่ ไม่มีเครื่องมือ/เครื่องจักร/อุปกรณ์ในการก่อสร้างและสําหรับงานซ่อมบํารุงปกติสําหรับถนนลาดยางและถนนคอนกรีต อปท. สามารถดําเนินการซ่อมบํารุงได้ทันทีภายหลังได้รับแจ้ง โดยกรณีในระดับไม่รุนแรง สามารถดําเนินการได้ทันทีภายในระยะเวลาเฉลี่ย 13.36 วัน สําหรับกรณีในระดับรุนแรง สามารถดําเนินการซ่อมบํารุงได้ทันทีภายในระยะเวลาเฉลี่ย 49.80 วัน และเพื่อเพิ่มขีดความสามารถในการดําเนินงานด้านงานทางและสะพานของ อปท. กรมทางหลวงชนบท ควรประชาสัมพันธ์ และเผยแพร่ข้อมูลมาตรฐาน/คู่มือ/ระบบสนับสนุนการปฏิบัติงาน …

A Fully Lexicographic Extension Of Min Or Max Operation Cannot Be Associative, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

In many applications of fuzzy logic, to estimate the degree of confidence in a statement A&B, we take the minimum min(a,b) of the expert's degrees of confidence in the two statements A and B. When a < b, then an increase in b does not change this estimate, while from the commonsense viewpoint, our degree of confidence in A&B should increase. To take this commonsense idea into account, Ildar Batyrshin and colleagues proposed to extend the original order in the interval [0,1] to a lexicographic order on a larger set. This idea works for expressions of the type A&B, so maybe we can extend it to more general expressions? In this paper, we show that such an extension, while theoretically possible, would violate another commonsense requirement -- associativity of the "and"-operation. A similar negative result is proven for lexicographic extensions of the maximum operation -- that estimates the expert's degree of confidence in a statement A\/B.

What Is The Optimal Annealing Schedule In Quantum Annealing, Oscar Galindo, Vladik Kreinovich

Departmental Technical Reports (CS)

In many real-life situations in engineering (and in other disciplines), we need to solve an optimization problem: we want an optimal design, we want an optimal control, etc. One of the main problems in optimization is avoiding local maxima (or minima). One of the techniques that helps with solving this problem is annealing: whenever we find ourselves in a possibly local maximum, we jump out with some probability and continue search for the true optimum. A natural way to organize such a probabilistic perturbation of the deterministic optimization is to use quantum effects. It turns out that often, quantum annealing …

Lexicographic-Type Extension Of Min-Max Logic Is Not Uniquely Determined, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

Since in a computer, "true" is usually represented as 1 and ``false'' as 0, it is natural to represent intermediate degrees of confidence by numbers intermediate between 0 and 1; this is one of the main ideas behind fuzzy logic -- a technique that has led to many useful applications. In many such applications, the degree of confidence in A & B is estimated as the minimum of the degrees of confidence corresponding to A and B, and the degree of confidence in A \/ B is estimated as the maximum; for example, 0.5 \/ 0.3 = 0.5. It is …

บทบรรณาธิการ, ศักดิ์สิทธิ์ เฉลิมพงศ์

Journal of Transportation and Logistics (TRANSLOG)

No abstract provided.

Novel Cancer Treatment Using Engineered Exosomes To Disrupt Cancer’S Immune Escape, Abena Boateng, Carley Fowler, Maritza Soria

Bioengineering Senior Theses

Cancer is one of the leading causes of death in the United States¹. This disease has impacted billions worldwide and has led to an ever-increasing burden on the healthcare system. Over the last couple of years, researchers have improved upon conventional cancer therapy that includes chemotherapy, radiation, and surgery. One novel approach is immunotherapy, which shows great potential because it has the ability to directly target cancerous cells². This is a viable treatment because most cancers develop the ability to block immune pathways and evade the killer immune cells in what is known as cancer immune …

Cervis: Cervical Cancer Early Response Visual Identification System, Kira Palazzo, Lauren Serfas, Juliana Trujillo

Bioengineering Senior Theses

The goal of CERVIS is to increase screening for cervical cancer through the development of a low-cost, minimally invasive screening procedure for women in low-resource settings that requires minimal healthcare expertise. There currently exist two primary screening procedures: the Pap smear, primarily used in developed countries, and visual inspection with acetic acid (VIA), primarily used in low and middle-income countries (LMICs). Both of these procedures require a high degree of healthcare training in order to administer and interpret, and are highly invasive, requiring direct interaction with the cervix. Our alternative procedure utilizes a particular bacteria, Fusobacterium nucleatum , within the …

Otter Vector Extension, Alexis A. Peralta

Computer Engineering

This paper offers an implementation of a subset of the "RISC-V 'V' Vector Extension", v0.7.x. The "RISC-V 'V' Vector Extension" is the proposed vector instruction set for RISC-V open-source architecture. Vectors are inherently data-parallel, allowing for significant performance increases. Vectors have applications in fields such as cryptography, graphics, and machine learning. A vector processing unit was added to Cal Poly's RISC-V multi-cycle architecture, known as the OTTER. Computationally intensive programs running on the OTTER Vector Extension ran over three times faster when compared to the baseline multi-cycle implementation. Memory intensive applications saw similar performance increases.

If Engineers Solve Problems, Why Are There Still So Many Problems To Solve?: Getting Beyond Technical “Solutions” In The Classroom, Cynthia Carlson, Catherine Wong

Librarian Publications

This Evidence-Based Practice Paper describes implementation and assessment of an exercise bringing international perspectives, liberal arts, and the United Nations Sustainable Development Goals into a first-year engineering program - challenging the arbitrary boundary between engineering and the liberal arts. First-year engineering students (Civil, Mechanical, and Electrical) participated in a role-playing game recreating the 2009 United Nations Climate Talks in Copenhagen, Denmark. The exercise is part of a series of published games called Reacting to the Past (RTTP), with the purpose of engaging students to enhance their understanding of a given event or topic, while improving their research and communication skills. …

Resilience Within And Resilience Without: Mindfulness And Sustainability Programming Using An Embedded Engineering Librarian Approach, Catherine Wong, Cynthia Carlson

Librarian Publications

Students are facing an increasingly chaotic world in part due to global climate change and environmental degradation, causing rising levels of stress and anxiety. Mindfulness and sustainability programs were initiated over three years by a faculty-librarian collaborative team to assist first-year engineering students in building environmental literacy and personal resilience skills. The faculty-librarian team established in class and out of class themes, games, assignments, and programming using an embedded librarian approach. Sustainability programming included environmental movie nights with curricular links and conversations about climate change using the World Café methodology. These activities allowed students time outside of class to engage …

Identification Of Messenger Molecule Between Mammalian And Bacterial Cells, Anna Fraser-Philbin, Alexander Heiler

Bioengineering Senior Theses

The rapid escalation of the antibiotic resistance crisis has brought attention to the decline in efficiency of antibiotics which have long been a cornerstone of modern medicine. This project aims to provide novel drug targets for the creation of anti-infective immunotherapies that can treat drug-resistant infections. The identification of said drug target(s) (Molecule X) will allow for the development of an antibody based drug that will neutralize bacterial virulence rather than killing the bacteria. Molecule X will be bound using the protein Sortase A (SrtA). SrtA is a surface protein that controls the virulence of gram positive bacteria by anchoring …

Fire Protection And Life Safety Analysis Of A Chicago Hotel, Thomas Hampton

Fire Protection Engineering: Culminating Experience Project Reports

The following report contains an analysis of the life safety and fire protection features of a Chicago Hotel. The report is intended to meet the requirements for the Culminating Experience of the Cal Poly Master of Science Fire Protection Engineering Program.

The Chicago Hotel building chosen for the analysis is a mixed-use 7-story hotel. On the 1st, 2nd, and 7th floors of the building are spaces for mercantile and restaurant tenants as well as other spaces necessary for the operation of the building such as back of house space for the hotel, storage, employee locker rooms, hotel and retail lobbies, …

Milkguard: A Low-Cost Hydrogel Sensor For The Detection Of Escherichia Coli In Donated Human Breast Milk, Emily Brogan, Ariana Haddad, Bridget Woody

Bioengineering Senior Theses

Breast milk is considered the gold standard of infant nutrition. However , many women around the world lack the ability to breastfeed their children due to disease, malnutrition, time constraints, or cultural considerations. Human breast milk banks exist to collect and distribute breast milk , allowing the greatest number of infants to have access to safe breast milk for optimal nutrition. To ensure the safety of the breast milk that is donated and distributed, milk banks must pasteurize and test donated breast milk for biological hazards such as bacteria. While pasteurization methods in the United States and other highly developed …

Shape Memory Alloy Actuator And Fluid Sampler Development For Extreme Environments, Rachel Stolzman

Mechanical Engineering Master's Theses

Due to the high temperature, high pressure environments of deep-sea boreholes, using conventional electronics to capture temperature-specific water samples may be unreliable or even impossible. In this project, we introduce the use of shape memory alloys as thermal sensors to trigger an actuator to take a water sample at a specified temperature. A custom sampler that can interface with a variety of developed triggers was also designed and fabricated for use in deep-sea boreholes. All of the developed triggers are modular and designed for ease-of-use by users on a drillship with limited tools and equipment. The shape memory alloys used …

Cal Poly Engineering Iv Building, Kai Liu

Fire Protection Engineering: Culminating Experience Project Reports

This report analyzes the fire protection systems of Engineering IV building at California Polytechnic State University, San Luis Obispo. It is a cumulative project of the Fire Protection Engineering Program at Cal Poly. The report consists of a prescriptive analysis and a performance-based design analysis. The building contains dry laboratories, classrooms, offices, and administrative spaces. The building is a three-story structure. There is an atrium that connects the first floor to the third floor. However, the building has a horizontal enclosure to separate the connection between the second floor and the third floor.

The prescriptive analysis is based on the …

Elewexe – Building 172b, California Polytechnic State University – San Luis Obispo, Anna M. Santoro

Fire Protection Engineering: Culminating Experience Project Reports

California Polytechnic State University at San Luis Obispo recently finished constructing a new multimillion student housing project on campus. One of the six buildings, elewexe or 172B, from this housing complex was selected for a full evaluation of the fire and life safety systems using both prescriptive and performance based approaches. The building is a Type II-B four story dormitory with an R-2 occupancy classification.

For the prescriptive approach, the building was evaluated against the most current editions of the IBC and relevant NFPA code editions for building requirements, sprinkler design and fire alarm and detection. When looking at the …

Second Baptist Church, Cypress Campus, David Kalinec

Fire Protection Engineering: Culminating Experience Project Reports

This report was created as part of the Master of Science Fire Protection Engineering degree program at California Polytechnic State University at San Luis Obispo. This project summarized the covered subjects during the course of each quarter of the program. The site chosen for this project is Second Baptist Church, Cypress Campus, located in Cypress, TX. This building was chosen because Churches are mixed use buildings that include assembly occupancies and large occupant loads.

A prescriptive-based code evaluation was performed on the building according to the 2012 editions of the international building code and fire code, adopted at the time …

Fire And Life Safety Analysis: Robert E Kennedy Library, Cal Poly San Luis Obispo Campus, Christopher Olmstead

Fire Protection Engineering: Culminating Experience Project Reports

This report provides a fire safety analysis on the Robert E. Kennedy Library located on the Cal Poly University campus San Luis Obispo, California. In the course of this analysis, a prescriptive and performance-based approached was used. The goal was to review and obtain an understanding of the features of the building’s design and use that provide fire safety. During the analysis, areas of deficiency will be identified. Recommendations will be made based on the analysis and the nature of the deficiencies.

The overall goal is to abide by the NPFA Life Safety standard: (1) Protection of occupants not intimate …

Fire And Life Safety Analysis: San Francisco Museum Of Modern Art, Jason Woo

Fire Protection Engineering: Culminating Experience Project Reports

A fire and life safety analysis was conducted to fulfill a requirement for the Master of Science Degree in Fire Protection Engineering from California Polytechnic State University. A prescriptive and performance-based analysis was conducted on the San Francisco Museum of Modern Art. The SFMOMA is a 10-story, 460,000 𝑓𝑡2 , Type 1A mixed occupancy building. Located in the northwest corner of San Francisco, SFMOMA houses a collection of over 33,000 works of painting, sculpture, design and media making it one of the largest museums in the world for modern and contemporary art.

Four features of the prescriptive based analysis include: …

Research Laboratory: Fire, Explosion, And Life Safety Analysis, Dennis A. Tuma

Fire Protection Engineering: Culminating Experience Project Reports

This culminating report is a fire, explosion, and life safety evaluation of a Research Laboratory ("Laboratory") where significant quantities of flammable, combustible, and hazardous materials are used and stored. The report's initial portion provides a prescriptive-based analysis using applicable sections of the 2016 California Building Standard Codes and National Fire Protection Association (NFPA) standards. Because of the unique challenges to hazardous laboratory spaces, the prescriptive- based analysis includes both a review of codes applicable to all occupancies (e.g., egress, fire-resistance, building area), and codes applicable to Group H and L occupancies (e.g., electrical area classification maps, control areas). Unfortunately, detailed …

Powell Building, David John Devinney

Fire Protection Engineering: Culminating Experience Project Reports

A detailed study of the fire and life safety systems was performed on the Powell Building located in Oak Ridge, TN. This report consists of both prescriptive and performance-based analysis. The prescriptive based analysis reviews the fire and life safety requirements in accordance with the applicable codes. The prescriptive portion of this report included life safety, fire suppression systems, fire alarm and detection systems, and structural fire protection. The performance-based analysis was used with viable fire scenarios to ensure that occupants could safely egress the building. This was accomplished by comparing the Required Safe Egress Time (RSET) with the Available …

New Campus Life Center Fire Protection Evaluation, Shawn R. Block

Fire Protection Engineering: Culminating Experience Project Reports

This project report is a fire and life safety evaluation of a newly constructed building. The new Campus Life Center (CLC) building is located on the campus of Emory University in Atlanta, Georgia. The CLC is a student center where students, staff, and guests can gather to socialize, study, eat and attend conferences. The prescriptive requirements were based on the Georgia State Fire Codes, adopted on January 2014 and served as code of record for this facility. Occupant classification was established from both International Building Code (IBC) and Life Safety Code (LSC), NFPA 101, to determine construction type, interior finish …

Early Detection Of Breast Cancer Through An Inverse Problem Approach To Stiffness Mapping: Simulations And Experimental Validation With Force Data, Robert Throne, Lorraine Olson, Emily I. Rusnak, Jonathan P. Gannon

Faculty Publications - Electrical and Computer Engineering

No abstract provided.

Developing Open Source Software Using Version Control Systems: An Introduction To The Git Language For Documenting Your Computational Research, Jared D. Smith, Jonathan D. Herman

All ECSTATIC Materials

Version control systems track the history of code as it is committed (saved) by any number of developers. Have you made a coding error and cannot debug it? Version control systems allow for resetting code back to when it worked, and show what code has changed since previous commits.

The contents of this lecture provide an introduction to the git version control language, GitHub for cloud hosting open source code repositories, and tutorials that demonstrate common and useful git and GitHub practices. This lecture is intended to be coupled with a discussion on creating reproducible computational research.

The zipped folder …

Changes In The Exposure Of California’S Levee-Protected Critical Infrastructure To Flooding Hazard In A Warming Climate, Iman Mallakpour, Mojtaba Sadegh, Amir Aghakouchak

Civil Engineering Faculty Publications and Presentations

Levee systems are an important part of California's water infrastructure, engineered to provide resilience against flooding and reduce flood losses. The growth in California is partly associated with costly infrastructure developments that led to population expansion in the levee protected areas. Therefore, potential changes in the flood hazard could have significant socioeconomic consequences over levee protected areas, especially in the face of a changing climate. In this study, we examine the possible impacts of a warming climate on flood hazard over levee protected land in California. We use gridded maximum daily runoff from global circulation models (GCMs) that represent a …

When Can We Be Sure That Measurement Results Are Consistent: 1-D Interval Case And Beyond, Hani Dbouk, Steffen Schön, Ingo Neumann, Vladik Kreinovich

Departmental Technical Reports (CS)

In many practical situations, measurements are characterized by interval uncertainty -- namely, based on each measurement result, the only information that we have about the actual value of the measured quantity is that this value belongs to some interval. If several such intervals -- corresponding to measuring the same quantity -- have an empty intersection, this means that at least one of the corresponding measurement results is an outlier, caused by a malfunction of the measuring instrument. From the purely mathematical viewpoint, if the intersection is non-empty, there is no reason to be suspicious, but from the practical viewpoint, if …

Why Lasso, Ridge Regression, And En: Explanation Based On Soft Computing, Woraphon Yamaka, Hamza Alkhatib, Ingo Neumann, Vladik Kreinovich

Departmental Technical Reports (CS)

In many practical situations, observations and measurement results are consistent with many different models -- i.e., the corresponding problem is ill-posed. In such situations, a reasonable idea is to take into account that the values of the corresponding parameters should not be too large; this idea is known as {\it regularization}. Several different regularization techniques have been proposed; empirically the most successful are LASSO method, when we bound the sum of absolute values of the parameters, ridge regression method, when we bound the sum of the squares, and a EN method in which these two approaches are combined. In this …

A Network Graph Technique For The Design Of Electric Aircraft Power Systems, Damien Lawhorn, Vandana Rallabandi, Dan M. Ionel

Power and Energy Institute of Kentucky Faculty Publications

Today the electrification of flight is more popular than ever, creating a wide array of concept aircraft and associated power system topologies. In order to gain insights into benefits of these varying architectures, this paper introduces the development of a framework for electric aircraft power system (EAPS) optimization. The proposed framework accepts inputs from a designer in the form of component parameters and desired flight mission characteristics. A collective graph representing many architectures is formed, from which, subgraphs or power system topologies meeting the flight requirements are extracted and analyzed. An optimum topology meeting the flight requirements with minimum mass, …

Towards The Design Of A Wideband Reflective Long Period Grating Distributed Sensor, Sohel Rana, Nirmala Kandadai, Harish Subbaraman

Electrical and Computer Engineering Faculty Publications and Presentations

In this paper, we computationally investigate the effects of metal coating length and coating coverage on the reflected spectrum of a long period grating (LPG) over a broad bandwidth. Simulation results indicate that coating the tail end of the fiber between the LPG and the end facet of the fiber provides a reflected spectrum that mimics the LPG transmission spectrum shape over a 400 nmbandwidth. Based on single LPG simulation results, we present the design of a distributed LPG structure containing a multiple number (n) of LPGs in reflection mode for the first time. Simulation results for n …