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IIE Annual Conference and Expo 2014

作者： Aqlan, Faisal Lam, Sarah S. Ramakrishnan, Sreekanth Boldrin, Warren Industrial and System Engineering Program Department of Mechanical Civil and Environmental Engineering University of New Haven West HavenCT06516 United States Department Systems Science and Industrial Engineering State University of New York at Binghamton BinghamtonNY13902 United States IBM Corporation WalthamMA02451 United States IBM Corporation PoughkeepsieNY12601 United States

ISBN: (纸本)9780983762430

This paper presents a study that integrates lean manufacturing and ergonomic principles to redesign and improve the internal transportation process in a high-end server manufacturing environment. Transportation of electronic parts within the factories is an important issue. The current transportation carts present quality hazards to electronic parts and they were not designed to handle the right dimensions and quantities of the newly introduced products. Furthermore, the current flow of carts introduces waiting time for the carts in the assembly areas. Inefficient transportation not only increases the waiting times but also the transportation costs. The objective of this study is to improve the transportation process and redesign transportation carts that are currently used to transport parts between different areas in a high-end server manufacturing environment utilizing lean and ergonomic principles. A new lean-based flow of transportation carts is proposed to reduce the waiting time and transported distance by having separate carts for each area. The new design of the carts represents a Poke-Yoke that prevents the operators from stacking the cards. Ergonomic principles are also considered in the new design. The number of carts required is estimated based on historical demand, outcomes from containment actions, current processes, and inputs from the production-planning department. The new lean-based flow and design of carts have resulted in cost savings and cost avoidance.

关键词： Lean production

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ENGAGE 2Be engineers mentoring program for minority students

ENGAGE 2Be engineers mentoring program for minority students

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121st ASEE Annual Conference and Exposition: 360 Degrees of engineering Education

作者： McCullough, Matthew B. A. Luster-Teasley, Stephanie Gloster Jr., Clay Parrish, Leotis Williams, Marcia F. Bailey, Ronnie S. North Carolina A and T State University United States Civil Engineering and Chemical Engineering Dept. North Carolina A and T State University United States Department of Computer Systems Technology North Carolina A and T University United States College of Engineering North Carolina A and T State University United States Civil Architectural and Environmental Engineering Program North Carolina A and T State University United States

Engaging the Next Generation of African-American Graduates Entering Biomedical, Biological, and environmental engineering Careers (ENGAGE 2BE) aims to address the current worker shortage and lack of diversity in various fields of engineering. Improving the diversity of viewpoints and experiences within the engineering field will fuel innovation and draw on a talent pool that will fill the current workforce needs. In order to increase underrepresented minority (URM) participation in engineering multiple strategies must be employed, two of which are increasing the retention and completion rates of URMs and women in engineering B.S. programs;as well as increasing the number of URMs and women that attend and complete graduate school in a science, technology, engineering, or math (STEM) field. An impactful mentoring program has been designed and implemented that leverages student strengths through social media to support students as they matriculate towards their B.S. degrees. Now entering its second academic year the ENGAGE 2BE program targets students who are URM, low income, first-generation, from immigrant or migrant worker families, have disabilities, or have children. The program provides mentoring academic support, and professional development through impactful workshops on understanding your strengths, being successful as a woman in a field highly populated by men, and preparing for graduate school. In addition, support is provided for student travel, to increase professional development and preparation to work in a global society. This paper reports on the ENGAGE 2BE program including program motivation, operations and management plans, as well as current assessment data and lessons learned. The information provided will aid others who are interested in strengthening support networks for undergraduate students in engineering. © American Society for engineering Education, 2014.

关键词： Students

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Multiple objective optimization of a biomass to bio-refinery logistics system

Multiple objective optimization of a biomass to bio-refinery...

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IIE Annual Conference and Expo 2015

作者： Delgado, Ileana Fernandez, Juan Valles, Claudia Taboada, Heidi A. Industrial Manufacturing and Systems Engineering Department University of Texas at El Paso 500 W. University Av. El PasoTX79968-0521 United States Environmental Science and Engineering Program University of Texas at El Paso 500 W. University Av. El PasoTX79968-0521 United States

ISBN: (纸本)9780983762447

Bioenergy has become an important alternative source of energy to alleviate the reliance on petroleum energy. Bioenergy offers diminishing climate change by reducing Green House Gas Emissions, as well as providing energy security and enhancing rural development. It is clear that Biomass can make a substantial contribution to supplying future energy demand in a sustainable way. However, the supply of sustainable energy is one of the main challenges that mankind will face over the coming decades. Approaching this problem as a multi-commodity network flow structure, the present work proposes the use of a multiple objective genetic algorithm (MOEA) for the design optimization of a biomass to bio-refinery logistic system considering the simultaneous maximization of the total profit and the minimization of global warming potential. The problem considers for the development of the MOEA, three different types of feedstock, one perennially grown grass, switchgrass, and two crop residues, corn stover and wheat straw.

关键词： Biomass

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Surface Bio-engineering of Melt Electrowritten Tubular Scaffolds via Plasma Immersion Ion Implantation

Materials Today Bio

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Materials Today Bio 2025年

作者： Anyu Zhang Anne Metje van Genderen Bingyan Liu Junyi Qian Jirawat Iamsamang Ziyu Wang Miguel Castilho Behnam Akhavan School of Biomedical Engineering University of Sydney Sydney Australia School of Physics University of Sydney Sydney Australia Sydney Nano Institute University of Sydney NSW 2006 Australia Div. Pharmacology Utrecht Institute for Pharmaceutical Sciences Utrecht University The Netherlands Department of Biomedical Engineering Eindhoven University of Technology Eindhoven the Netherlands Charles Perkins Centre University of Sydney NSW 2006 Australia School of Life and Environmental Sciences University of Sydney NSW 2006 Australia Institute for Complex Molecular Systems Eindhoven University of Technology Eindhoven the Netherlands School of Engineering University of Newcastle Callaghan NSW 2308 Australia Hunter Medical Research Institute (HMRI) Precision Medicine Program New Lambton Heights NSW 2305 Australia

Melt electrowriting (MEW) enables the fabrication of highly controlled, open-pore tubular constructs for replicating the complex architectures of vascular, renal, and other tissues. However, a key challenge is to functionalize their surfaces so that they not only support but also instruct key biological interactions, particularly in promoting vascularization. Here, we propose plasma immersion ion implantation (PIII) as a biofunctionalization strategy for open-pore tubular constructs fabricated by MEW. Surface chemistry analysis confirmed homogeneous treatment across PIII-treated MEW 3D structures, while uniaxial tensile tests demonstrated no significant changes in mechanical properties following the treatment. Electron paramagnetic resonance (EPR) data provided evidence of the formation of a stable, radical-rich surface, which was further validated by fluorescence imaging with a model molecule, confirming the radicals’ role in enabling uniform covalent biomolecule attachment. The PIII-treated MEW constructs were covalently functionalized with vascular endothelial growth factor (VEGF), thereby modulating the behavior of seeded cells. Endothelialization studies using conditionally immortalized glomerular endothelial cells (ciGEnC) demonstrated that VEGF-immobilized MEW tubes effectively support monolayer formation, achieving outcomes comparable to those observed with VEGF supplementation in culture media. Remarkably, the immobilized VEGF sustained endothelialization with a similar effectiveness to traditional VEGF suspension methods over prolonged culture conditions (21 days), but without the need for continuous VEGF supplementation. These findings establish a novel biofunctionalization strategy for vascularized tissue engineering scaffolds and pave the way for plasma-modified MEW tubes as platforms for preclinical models and regenerative medicine applications.

关键词： Vascular Tube biofunctionalization plasma surface engineering covalent immobilization

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The effects of touch screen virtual keyboard key sizes on typing performance, typing biomechanics and muscle activity

The effects of touch screen virtual keyboard key sizes on ty...

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4th Int. Conf. on Digital Human Modeling and Applications in Health, Safety, Ergonomics, and Risk Management: Human Body Modeling and Ergonomics, DHM 2013, Held as Part of 15th Int. Conf. on Human-Computer Interaction, HCI 2013

作者： Kim, Jeong Ho Aulck, Lovenoor S. Thamsuwan, Ornwipa Bartha, Michael C. Harper, Christy A. Johnson, Peter W. Department of Environmental and Occupational Health Sciences University of Washington Seattle WA United States Department of Bioeingeering University of Washington Seattle WA United States Department of Industrial and Systems Engineering University of Washington Seattle WA United States Ergonomics Research and Development Program Hewlett-Packard Houston United States Personal Systems Group Hewlett-Packard Houston United States

ISBN: (纸本)9783642391811

The goal of the present study was to determine whether different touch screen virtual keyboard key sizes affected typing productivity, typing forces, and muscle activity. In a repeated-measures laboratory experiment with 21 subjects, typing speed, accuracy, muscle activity, and typing forces were measured and compared between four different key sizes: 13x13, 16x16, 19x19, and 22x22 mm. The results showed that 13 mm keyboard had a 15% slower typing speed (p

关键词： Electromyography

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An Interval-parameter Fuzzy Robust Nonlinear programming Model for Water Quality Management

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Journal of Water Resource and Protection 2013年第1期5卷 12-16页

作者： Min Liu Guoxin Nie Ming Hu Renfei Liao Yangshuo Shen College of Economic and Management North China Electric Power University Beijing China College of Environmental Science and Engineering North China Electric Power University Beijing China Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina Canada MOE Key Laboratory of Regional Energy Systems Optimization North China Electric Power University Beijing China

Planning for water quality management is important for facilitating sustainable socio-economic development;however, the planning is also complicated by a variety of uncertainties and nonlinearities. In this study, an interval-parameter fuzzy robust nonlinear programming (IFRNP) model was developed for water quality management to deal with such difficulties. The developed model incorporated interval nonlinear programming (INP) and fuzzy robust programming (FRP) methods within a general optimization framework. The developed IFRNP model not only could explicitly deal with uncertainties represented as discrete interval numbers and fuzzy membership functions, but also was able to deal with nonlinearities in the objective function.

关键词： Water Quality Management Interval programming Fuzzy Robust programming Nonlinear programming Uncertainty

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Qualitative Risk Analysis for Contents of Dry Toilets Used to Produce Novel Recycling Fertilizers

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Circular Economy and Sustainability 2021年第3期1卷 1107-1146页

作者： Krause, Ariane Häfner, Franziska Augustin, Florian Udert, Kai M. Leibniz Institute of Vegetable and Ornamental Crops (IGZ) e.V. program area ‘Next-Generation Horticultural Systems’ (HORTSYS) Großbeeren Germany Finizio – Future Sanitation Eberswalde Germany ETH Zürich Institute of Environmental Engineering Zürich Switzerland Eawag Swiss Federal Institute of Aquatic Science and Technology Dübendorf Switzerland

Human excreta are a sustainable, economical source of nutrients, and can be used to produce recycling fertilizer for horticulture by collecting and processing the contents of dry toilets. Herein, we discuss the key categories of risk associated with the main groups of materials commonly found in dry toilets. The study was part of the development of a German product standard for marketable and quality-assured recycling fertilizers from human excreta for use in horticulture. Particular attention is paid to ensuring that the fertilizer is epidemiologically and environmentally harmless and that the quality of the recycling fertilizer is adequate in terms of low pollution and nutrient availability. In sum, the risk of transmissible human pathogens lies within the human excreta, particularly feces;plant materials added during composting are of particular phytosanitary relevance;pharmaceutical residues in excrements and chemical additives are potential sources of pollutants;non-biodegradable contaminants can cause pollution and injury;and the horticultural risks involve mainly the ammonia emission potential and in some cases the salinity effects of urine. These risks can be reduced significantly (i) with education of users around proper operation of dry toilets and the consequences of adding inappropriate waste, (ii) with facilitation of proper use with general waste bins and clear instructions, and importantly (iii) by using modern sanitization and cleaning processes and testing for harmful substances under the guidance of local laws and regulations, ensuring safe and high-quality fertilizers. In conclusion, the benefits of using dry toilet contents to produce fertilizers for use in horticulture are unquestionable. Our analysis highlights the need to support recycling optimization and awareness for the purpose of a sustainable circular economy and to minimize the risk of harm to humans and the environment overall. © 2021, The Author(s).

关键词： Compost Human excreta Nutrient cycling Pharmaceuticals Pollutants Sanitation Urine

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Hydroxyl Radical-Driven Transformations of Bisphenol a and 2,4 Dinitroanisole: Experimental and Computational Analysis

SSRN

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SSRN 2023年

作者： Das Schober, Jaya Burdsall, Adam C. Searcy, Troy Hart, Jeffry Shade, Megan Harper, Willie F. Air Force Institute of Technology Environmental Engineering and Science Program Department of Systems Engineering and Management 2950 Hobson Way Wright-Patterson AFB OH45433 United States

This study used experimental and computational analysis to investigate the advanced oxidation of bisphenol A (BPA) and 2,4 dinitroanisole (DNAN). The pseudo first-order reaction rate constants depended on the molar peroxide ratio and were between 0.13 and 0.28 per min for BPA and between 0.018 and 0.032 per min for DNAN. Hydroxyl radical scavenging was strongly implicated by the experimental results. The kinetic differences appear to be due in part to the energy requirement for oxidation, which was 9.32 kcal/mol for BPA and 36.37 kcal/mol for DNAN. Transformation pathways were analyzed using Density Functional Theory (DFT), which helped to predict the presence of experimentally-detected byproducts. The most energetically favored pathway for BPA oxidation begins with formation of hydroxylated derivatives, while for DNAN the most energetically favorable degradation pathway begins with substitution of methoxy group. Overall, these findings demonstrate the power of combining experimental and computational tools to reveal transformation mechanisms for emerging water pollutants. © 2023, The Authors. All rights reserved.

关键词： Density functional theory

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Ideation of engineering Solutions for Sustainable Development Goals: A Collaborative Course Between Thai and Japanese Students 38

Ideation of Engineering Solutions for Sustainable Developmen...

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38th IEEE Region 10 Conference, TENCON 2023

作者： Krutphong, Kodchakorn Leelawat, Natt Tang, Jing Ota, Eri Suzuki, Rie Murakami Taoka, Yuki Punyabukkana, Proadpran Environmental Engineering and Disaster Management Program Mahidol University Thailand Department of Industrial Engineering Faculty of Engineering Chulalongkorn University Thailand Disaster and Risk Management Information Systems Research Unit Chulalongkorn University Thailand International School of Engineering Chulalongkorn University Thailand Center for International Education Tokyo Institute of Technology Japan School of Environmet and Society Tokyo Institute of Technology Japan Department of Computer Engineering Faculty of Engineering Chulalongkorn University Thailand The Learning Innovation Center Chulalongkorn University Thailand

ISBN: (纸本)9798350302196

A collaborative course called Global Awareness for Technology Implementation was conducted by the Faculty of engineering, Chulalongkorn University, Thailand, and the Tokyo Institute of Technology, Japan. The objective of this course was to facilitate the exchange of knowledge, perspectives, and experiences between Thai and Japanese students through project work, using an engineering design approach and the design thinking process to create innovation relevant to the Sustainable Development Goals (SDGs). During the class, experts shared their knowledge and experiences with the students. The students then worked on their respective projects to develop solution concepts using the design thinking process. The proposed ideas include the application for English class, smart water quality checker, hydrogen-based energy system for rural area, reduced wasted fashion solution, and auto waste sorting machine. Finally, this study concluded with a summary of the results and findings on the empathy process in the chosen SDGs, and of the commonalities and differences between Thailand and Japan in terms of ideation. © 2023 IEEE.

关键词： Students

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Future Glycemic Events Prediction Model Based On Artificial Neural Network

Future Glycemic Events Prediction Model Based On Artificial ...

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2022 International Conference on Innovation and Intelligence for Informatics, Computing, and Technologies, 3ICT 2022

作者： Syafrudin, Muhammad Alfian, Ganjar Fitriyani, Norma Latif Hadibarata, Tony Rhee, Jongtae Anshari, Muhammad Sejong University Department of Artificial Intelligence Seoul Korea Republic of Universitas Gadjah Mada Department of Electrical Engineering and Informatics Vocational College Yogyakarta Indonesia Sejong University Department of Data Science Seoul Korea Republic of Curtin University Environmental Engineering Program Miri Malaysia Dongguk University Department of Industrial and Systems Engineering Seoul Korea Republic of Universiti Brunei Darussalam School of Business and Economics Brunei

ISBN: (数字)9781665451932

ISBN: (纸本)9781665451932

Predicting future glycemic events such as hypoglycemia, hyperglycemia, and normal for type 1 diabetes (T1D) remains a significant and challenging issue. In this study, an artificial neural network (ANN)-based model is proposed to predict the future glycemic events of T1D patients. We utilized five T1D patient datasets to build the models and predict future glycemic events with a prediction horizon (PH) of 30 and 60 minutes ahead of time. We applied the data preprocessing method based on the sliding window approach by sliding the blood glucose time-series data from the past 60 minutes (the last 12 data points) as input and using the next 30 and 60 minutes (the next 6 and 12-th data points) as output. All the numeric blood glucose output data are then transformed into a multi-class classification label, such as hypoglycemia, hyperglycemia, and normal. Our proposed model is then used to learn and create the prediction model from the preprocessed blood glucose dataset. Four performance metrics such as accuracy, precision, recall, and f-1 score were utilized to measure the performance of the classification models used in this study, such as Naïve Bayes (NB), Decision Tree (DT), Support Vector Machine (SVM), and K-Nearest Neighbour (KNN). The results showed that our proposed ANN-based model performed better at predicting future glycemic events than other models, with an average accuracy, precision, recall, and f-1 score of 88.649%, 76.661%, 71.731%, 72.609%, and 83.364%, 60.437%, 61.345%, 60.62% for the PH of 30 and 60 minutes, respectively. As a result, knowing this future glycemic event sooner can help patients avoid potentially dangerous conditions and can eventually be used to improve diabetes management. © 2022 IEEE.

关键词： Decision trees

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