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Natural Sciences Education 2017年第1期46卷 1-9页

作者： Anandhi, Aavudai Yang, Yang Hubenthal, Michael Dep. of Special Education Counseling and Student Affairs College of Education Kansas State Univ. Manhattan 66506 KS United States Biological Systems Engineering Florida Agricultural and Mechanical Univ. Tallahassee 32307 FL United States Education and Outreach Program Incorporated Research Institutions for Seismology (IRIS) Washington 20005 DC United States

Core Ideas: Watershed is an important concept in science and engineering of natural resources. Introducing watershed concept using a leaf that students see every day is novel. Using leaf analogy, watershed concept can be taught universally. This article examines the effects of using leaves, something most students see every day and have some familiarity with, as an analogy for the concept of watersheds in an undergraduate water resources engineering course. The ultimate goal of the leaf/watershed analogy and associated instruction is to increase students’ understanding of hydrology principles, which in turn may facilitate better watershed management through increased public awareness, increased adoption of appropriate best management practices, and improved policy decisions. The assessment was performed with junior and senior undergraduate students enrolled in a Water Resource engineering course. The assessment results showed that overall, students benefitted from the leaf analogy as a tool for learning watersheds. However, this effect varied depending on students’ learning style preferences. Copyright © 2017 by the American Society of Agronomy

关键词： watersheds foliage engineering calculating program college student Analogy Water Resources engineering Public awareness Students Water Resources Familiarity

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Implementation of Generate and Test Algorithm for Junior High School Zoning System in Malang 4

Implementation of Generate and Test Algorithm for Junior Hig...

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4th International Conference on Vocational Education and Training, ICOVET 2020

作者： Ratnasar, Novia Agustin Mawarni, Inggar Tri Nur Handayani, Anik Wibawa, Aji Prasetya Hammad, Jehad A. H Wibowotomo, Budi Sugandi, MacHmud Universitas Negeri Malang Vocational Education Program Department Indonesia Universitas Negeri Malang Electrical Engineering Dept Indonesia Al-Quds Open University Faculty of Technology and Applied Sciences Department of Computer Information Systems Palestine Universitas Negeri Malang Industrial Technology Department Malang65145 Indonesia Universitas Negeri Malang Mechanical ENgineering Department Malang65145 Indonesia

ISBN: (纸本)9781728181318

Admission of new students in 2019 through zoning still faces many obstacles, one of which is the readiness of the application to determine the distance of a student's house from the nearest recommended school. The purpose of this study is to provide better recommendations regarding the shortest and most accurate distance in the zoning system for admission of junior high school students in Malang by using the Generate and Test algorithm without having to do it manually or using other map applications. The results of this study indicate that the distance value obtained from the haversine formula corresponds to the original distance measured through a zoning application that applies the Generate and Test algorithm to measure the closest distance from the student's location. The recommended distance is given through a process of repetition and comparison of nodes. By using the generate and test algorithm for the search process the shortest distance from the user to the destination school has an average time of 6.2MB, the level of accuracy is the same as the Haversine calculation. © 2020 IEEE.

关键词： Students

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Hierarchical method for prioritization of sustainable products' characteristics

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Chemical engineering Transactions 2016年 52卷 529-534页

作者： Junior, Osiris Canciglieri Krüger, Suewellyn Sant'Anna, Angelo M.O. Industrial and Systems Engineering Graduate Program Pontifical Catholic University of Parana Rua Imaculada Conceição Curitiba1155 Brazil Mechanical Engineering Department Federal University of Bahia Rua Aristides Novis 2 Salvador Brazil

ISBN: (纸本)9788895608426

The conception of the manufacturing process to be initially applied in the parts rapid production targeting a first embodiment of an idea (prototypes) and without many demands on strength and accuracy is called rapid prototyping. New rapid prototyping technologies are more accessible under the aspects of cost, accuracy, usability, environmental and prototypes started to be increasingly explored in the sustainable product development process. This paper proposes the application of hierarchical analysis method to support the decision-making in Rapid Prototyping processes based on the analysis of product and RP technology and prototype characteristics. The application of the developed method consists of assigning numeric values to the product characteristics and to the important characteristics for users in order to build the comparison matrix to perform the assessment and the prioritization steps of the relevant features. Performing the prioritization of features considered most important along with the characteristics of the chosen prototyping technology make possible the analysis of the effect of the characteristics prioritization. The concepts of product development, rapid prototyping and analytic hierarchy process for the sustainable product were used in a structure (lightweight dual) to evaluate the proposed strategy. The lightweight dual product from the 3D printing technology has been successful to show the product's purpose and functionality due to its lower cost, short execution time, good surface finishing and dimensional accuracy. The results show that the analysis of the sustainable product for rapid prototyping technology based on characteristics prioritization strategy improves the product design. © 2016, AIDIC Servizi S.r.l.

关键词： Rapid prototyping

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Predictive Visual Feedback Control with Eye-in-Hand System via Stabilizing Receding Horizon Approach

Predictive Visual Feedback Control with Eye-in-Hand System v...

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IEEE Conference on Decision and Control

作者： Toshiyuki Murao Teruki Yamada Masayuki Fujita Master Program of Information Systems Architecture Advanced Institute of Industrial Technology Tokyo Japan Department of Mechanical and Control Engineering Tokyo Institute of Technology Tokyo Japan

ISBN: (纸本)1424401704;9781424401703

This paper investigates vision based robot control based on a receding horizon control strategy, as a first step for a predictive visual feedback control. Firstly, the brief summary of the 3D dynamic visual feedback system with eye-in-hand configuration is given. Next, a stabilizing receding horizon control for the 3D dynamic visual feedback system, a highly nonlinear and relatively fast system, is proposed. The stability of the receding horizon control scheme is guaranteed by using the terminal cost derived from an energy function of the visual feedback system. Furthermore, simulation results are assessed with respect to the stability and the performance

关键词： Feedback control Control systems Stability Robot sensing systems Nonlinear dynamical systems Nonlinear control systems Cost function Robot vision systems Manipulator dynamics Visual servoing

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Dynamics of self-hybridized exciton–polaritons in 2D halide perovskites

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Light(Science & Applications) 2024年第1期13卷 13-22页

作者： Surendra B.Anantharaman Jason Lynch Christopher E.Stevens Christopher Munley Chentao Li Jin Hou Hao Zhang Andrew Torma Thomas Darlington Francis Coen Kevin Li Arka Majumdar PJames Schuck Aditya Mohite Hayk Harutyunyan Joshua R.Hendrickson Deep Jariwala Department of Electrical and Systems Engineering University of PennsylvaniaPhiladelphiaPA19104USA KBR Inc. BeavercreekOH45431USA Air Force Research Laboratory Sensors DirectorateWright-Patterson Air Force BaseOH45433USA Department of Physics University of WashingtonSeattleWA98195USA Department of Physics Emory UniversityAtlantaGA30322USA Department of Chemical and Biomolecular Engineering Rice UniversityHoustonTX77005USA Department of Materials Science and Nanoengineering Rice UniversityHoustonTX77005USA Applied Physics Program Smalley‐Curl InstituteRice UniversityHoustonTX77005USA Department of Mechanical Engineering Columbia UniversityNew YorkNY10027USA Department of Electrical and Computer Engineering University of WashingtonSeattleWA98195USA

Excitons,bound electron–hole pairs,in two-dimensional hybrid organic inorganic perovskites(2D HOIPs)are capable of forming hybrid light-matter states known as exciton-polaritons(E–Ps)when the excitonic medium is confined in an optical *** the case of 2D HOIPs,they can self-hybridize into E–Ps at specific thicknesses of the HOIP crystals that form a resonant optical cavity with the ***,the fundamental properties of these self-hybridized E–Ps in 2D HOIPs,including their role in ultrafast energy and/or charge transfer at interfaces,remain ***,we demonstrate that>0.5µm thick 2D HOIP crystals on Au substrates are capable of supporting multiple-orders of self-hybridized E–P *** E–Ps have high Q factors(>100)and modulate the optical dispersion for the crystal to enhance sub-gap absorption and *** varying excitation energy and ultrafast measurements,we also confirm energy transfer from higher energy E–Ps to lower energy E–***,we also demonstrate that E–Ps are capable of charge transport and transfer at *** findings provide new insights into charge and energy transfer in E–Ps opening new opportunities towards their manipulation for polaritonic devices.

关键词： charge polar excitation

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A chaotic firefly algorithm applied to reliability-redundancy optimization

A chaotic firefly algorithm applied to reliability-redundanc...

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Congress on Evolutionary Computation

作者： Leandro dos Santos Coelho Diego Luís de Andrade Bernert Viviana Cocco Mariani Industrial and Systems Engineering Graduate Program PPGEPS Pontifical Catholic University of Paraná Curitiba Parana Brazil Department of Mechanical Engineering PPGEPS Pontifical Catholic University of Paraná Curitiba Parana Brazil

The reliability-redundancy allocation problem can be approached as a mixed-integer programming problem. It has been solved by using optimization techniques such as dynamic programming, integer programming, and mixed-integer non linear programming. On the other hand, a broad class of meta heuristics has been developed for reliability-redundancy optimization. Recently, a new meta-heuristics called firefly algorithm (FA) algorithm has emerged. The FA is a stochastic metaheuristic approach based on the idealized behavior of the flashing characteristics of fireflies. In FA, the flashing light can be formulated in such a way that it is associated with the objective function to be optimized, which makes it possible to formulate the firefly algorithm. This paper introduces a modified FA approach combined with chaotic sequences (FAC) applied to reliability-redundancy optimization. In this context, an example of mixed integer programming in reliability-redundancy design of an overspeed protection system for a gas turbine is evaluated. In this application domain, FAC was found to outperform the previously best-known solutions available.

关键词： Fires Optimization Chaos Algorithm design and analysis Benchmark testing Redundancy

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Redesigning a college-wide multidisciplinary engineering design program at RIT

Redesigning a college-wide multidisciplinary engineering des...

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114th Annual ASEE Conference and Exposition, 2007

作者： Walter, Wayne Webb, Jeffrey Smith, Mark DeBartolo, Elizabeth Bailey, Margaret Slack, George Rochester Institute of Technology United States Department of Mechanical Engineering RIT United States Engineering Modeling and Simulations Group Southeast Division of Applied Research Associates Programs Rochester Institute of Technology United States United States Engineering Honors Program United States Multidisciplinary Capstone Design Leadership Team United States Senior Design and Digital Systems United States Xerox Corp Bosch Corp. United States

Since 2002, the Kate Gleason College of engineering (KGCOE) at the Rochester Institute of Technology (RIT) has seen its Multidisciplinary Senior Design (MSD) program grow from a small pilot project into a college-wide initiative, involving four departments and almost 400 students annually. While subtle adjustments have been made each year, a major redesign effort was undertaken prior to the 2006 academic year to improve program alignment with departmental objectives, to improve delivery efficiency and effectiveness, and to improve student and faculty satisfaction. The project definition process was overhauled to focus on the definition of related projects within a set of disciplinary "tracks," consistent with academic programs and faculty interests. Emphasis was placed on development of reusable and scalable platforms to lay the foundation for future project extensions, and to encourage cross-project and cross-department collaboration. To reduce startup time normally associated with student projects, day-long workshops were developed for the first four weeks that forced intense focus on customer requirements, engineering specifications, and concept development and selection. The workshop structure and format further encouraged collaboration within and across teams. Lastly, a Wiki-based online environment was created to support knowledge capture and emergent collaboration. This paper provides an overview of changes to the MSD program in three key areas: course delivery, project definition, and communications infrastructure. Attention is given to innovative approaches to challenges inherent in serving a large and diverse constituency with limited resources. © American Society for engineering Education, 2007.

关键词： Curricula

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A normative differential evolution approach for estimation of heat transfer coefficient during freezing treatment by inverse analysis

A normative differential evolution approach for estimation o...

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Congress on Evolutionary Computation

作者： Viviana Cocco Mariani Carlos Eduardo Klein Luiz Guilherme Justi Luvizotto Leandro dos Santos Coelho Department of Mechanical Engineering PPGEM Pontifical Catholic University of Paraná Curitiba Parana Brazil Industrial and Systems Engineering Graduate Program PPGEPS Pontifical Catholic University of Paraná Curitiba Parana Brazil

Among the existing meta-heuristic optimization algorithms, a well-known branch is the differential evolution (DE). DE is a powerful population-based algorithm of evolutionary computation field designed for solving global optimization problems which only has a few control parameters. With an eye to improve the performance of DE, in this paper, a DE approach combined with a cultural algorithm technique based on normative knowledge (NDE) is investigated to estimate the heat transfer coefficient during freezing treatment by inverse analysis. Numerical results for inverse heat transfer problem demonstrate the applicability and efficiency of the NDE algorithm. In this application, NDE approach outperforms a classical DE approach in terms of quality of solution.

关键词： Heat transfer Optimization Temperature measurement Cultural differences Algorithm design and analysis Evolutionary computation Temperature

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Optimising phase change materials for ventilated building components in sustainable building design: a comprehensive review

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Energy and Buildings 2025年

作者： Farhan Lafta Rashid Mudhar A. Al-Obaidi Wadhah Amer Hatem Najah M.L. Al Maimuri Arman Ameen Shabbir Ahmad Ephraim Bonah Agyekum Saif Ali Kadhim Karrar A. Hammoodi Petroleum Engineering Department College of Engineering University of Kerbala Karbala 56001 Iraq Technical Instructor Training Institute Middle Technical University Baghdad 10074 Iraq Middle Technical University Technical Institute of Baquba Baquba Diyala 32001 Iraq Building and Construction Techniques Engineering Department College of Engineering and Engineering Techniques Al-Mustaqbal University Hillah Babylon 51001 Iraq Department of Building Engineering Energy Systems and Sustainability Science University of Gävle 801 76 Gävle Sweden Graduate Program of Ocean Engineering School of Engineering Universidade Federal do Rio Grande Rio Grande Italia Avenue km 8 96201-900 Brazil Institute of Geophysics and Geomatics China University of Geosciences Wuhan 430074 China Department of Nuclear and Renewable Energy Ural Federal University Named after the First President of Russia Boris Yeltsin 19 Mira Street Ekaterinburg 620002 Russia Western Caspian University 31 Istiglaliyyat Street AZ1001 Baku Azerbaijan Istanbul Okan University Tuzla Campus 34959 Tuzla Istanbul Turkey Mechanical Engineering Department University of Technology – Iraq Baghdad Iraq College of Engineering University of Al Maarif Al Anbar Iraq

The rise in energy-efficient, sustainable building operations necessitates the development of advanced innovations that reduce heating and cooling demands while maintaining comfortable indoor thermal conditions. Phase change materials (PCMs) demonstrate significant potential as a stabilization mechanism through latent heat storage for managing residential indoor temperatures; however, their integration into systems requires further optimisation. This review examines PCM-assisted ventilation technologies—specifically ventilated façades, roofs, and windows—highlighting their energy performance, which ranges from 7.7 % to 32.8 %, and their capacity to reduce peak temperatures by 2.5 °C to 7.02 °C. These improvements are influenced by PCM thickness of 15–35  mm and melting temperatures of 15–37 °C. The combination of PCM-enhanced hybrid systems with natural or mechanical ventilation has shown greater operational effectiveness, particularly in hot climates and when integrated with adaptive control systems to achieve optimal performance. Despite their benefits, widespread adoption of PCM technologies is hindered by high material costs, hysteresis effects, and limited discharge cycle efficiency. Nevertheless, PCM-enhanced ventilation systems have proven capable of supporting sustainable, low-energy buildings. Continued research is needed to develop cost-effective design strategies, automated control mechanisms, and climate-responsive optimisations to fully realize their potential.

关键词： Energy-efficient ventilation systems Phase change materials (PCMs) Residential buildings Sustainable thermal management

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Improvement of product strength and press formability of Al-Mg-Si alloy sheets by resistance heat treatment and artificial aging

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Keikinzoku/Journal of Japan Institute of Light Metals 2006年第6期56卷 313-316页

作者： Ishiguro, Minoru Maki, Seijiro Mori, Ken-Ichiro Doctoral Program of Mechanical and Structural System Engineering Toyohashi University of Technology 1-1 Hibarigaoka Tempaku-cho Toyohashi-shi Aichi 441-8580 Department of Production Systems Engineering Toyohashi University of Technology Toyohashi-shi Aichi

A treatment consisting of resistance heat treatment and artificial aging was developed to improve the product strength and press formability of Al-Mg-Si alloy sheets having paint bake hardenability used for automobile body panels. In this treatment, the sheets are re-solution heat-treated by resistance heating and water quenching just before the press forming. The formed sheets are artificially aged just after the press forming to increase the product strength. In the experiment, Al-0.60%Si-0.74%Mg (A6061) alloy sheets were chosen. The solution heat treatment of the sheets was sufficiently accomplished by the rapid resistance heat treatment, and the press formability of the sheets was improved. The hardness of formed products is increased by the artificial aging and paint bake hardening. It was found that the present heat treatment is effective in improving the product strength and press formability of the Al-Mg-Si alloy sheets having the paint bake hardenability.

关键词： Aluminum alloys

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