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A new weir surface repair layer with shock absorbing cushion design

Earthquake engineering and engineering Vibration 2013年第3期12卷 487-496页

作者： Tse-Shan Hsu Yi-Lang Hsieh Department of Civil Engineering Feng-Chia University Ph.D Program in Civil and Hydraulic Engineering Feng-Chia University

A shock absorbing cushion has never been introduced into any traditional weir surface repair layer design. However, shocks induced by high discharge with heavy sediment can easily produce brittle fracture and peeling over a weir surthce repair layer as it is impacted by floods accompanied by particles of different sizes. In this study, transcending traditional designs, the authors developed a composite unit designed with a shock absorbing cushion that has performed well during field tests, proving that the weir body can be effectively protected even if the composite units are directly laid on a severely uneven weir surface repair layer.

关键词： shock absorbing cushion brittle fracture peeling weir

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Exploring the vague environmental factor via data-driven methods: An application of GA-ANN for environmental investigation

Exploring the vague environmental factor via data-driven met...

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2012 8th International Conference on Natural Computation, ICNC 2012

作者： Lee, Shwu-Ting Wu, Chih-Wen Department of Architecture Feng-Chia University Taichung Taiwan Ph.D Program in Civil and Hydraulic Engineering Feng-Chia University Taichung Taiwan

ISBN: (纸本)9781457721311

Using some numeric factors to represent certain environmental factors is the essential method to understand the relationships between environmental phenomena and environmental factors. Sometimes environmental researchers need to set some ordinal-scale variables to describe several differences that might exist in certain properties. This research offers one process which is mainly combined by Genetic Algorithm (GA) and Artificial Neural Network (ANN). Through using this GA-ANN process can assist for determining one ordinal-scale variable in environmental experiment. The experiment area in this paper is Feng-Chia night market, Taichung, Taiwan. This research uses ANN to establish a spatial interaction model for simulating the informal commercial phenomena in Feng-Chia night market. And the main goal is to test whether applying GA to determine one ordinal-scale variable can increase the ANN simulating accuracy. By simulation result given in this paper, the GA-ANN can improve the experimental performance via modifying one ordinal-scale variable, and this process can reveal more detail information and potential directions to help researcher clarify the properties of the ordinal-scale variable. © 2012 IEEE.

关键词： Neural networks

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A Particle Floating Model for the Initiation of debris Flows

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Procedia engineering 2014年 79卷 606-611页

作者： Tse-Shan Hsu Shey-En Chiu Stephen Hsu Cheng-Chieh Ho Feng-Chia University Ph.D Program in Civil and Hydraulic Engineering No.100 Wenhwa Road Taichung 40724 Taiwan George Institute of Technology School of Civil and Environmental Engineering 790 Atlantic Drive Atlanta GA 30332-0355 USA

Riverbeds in Taiwan are full of granular materials such as boulder, cobble, gravel, sand, and silt. Under the action of floods, particles with their sizes from little to large will be floating upward and then flowing with floods gradually. Mechanical models for critical conditions of debris flows taken by some other researchers in Taiwan are mainly based on slope stability criteria. However real debris flows are generally observed to be initiated when granular soils start floating upward. Under such circumstances, a more proper mechanical model was proposed by the authors. It was proved that such a model can provide proper solutions as compared with those produced from tests.

关键词： critical conditions debris flow bottom velocity riverbed riverbank

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Factors Affecting Resource Allocation for Simultaneous Projects: A Systematic Literature Review

Factors Affecting Resource Allocation for Simultaneous Proje...

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IEEE International Technology Management Conference

作者： Sara Alsafadi Junu Jahana Mohamed Al-Ali Anas Alteneiji Salwa Beheiry Department of Industrial Engineering Engineering System Management Ph.D Program Sharjah UAE Department of Civil Engineering American University of Sharjah Sharjah UAE

ISBN: (数字)9798350367355

ISBN: (纸本)9798350367362

Contemporary business practices necessitate organizations to undertake multiple simultaneous projects, which can result in challenges related to meeting deadlines, budget constraints, and specifications of the end user. Although numerous studies have investigated ways to improve project management outcomes, relatively few have examined project management in multi-project environments. Multi-project environments present unique challenges such as coordination and collaboration between and within project teams, scheduling, resource allocation, and skill development. Therefore, a systematic literature review was conducted to identify the 16 most-cited articles relevant to the topic published in the past ten years, in addition to the five most-cited articles published in the past three years. These articles were analyzed to identify the most pertinent factors affecting resource allocation in multi-project environments and provide recommendations for future research directions. The data analysis approach adopted in this study was a content analysis. Through content analysis, the systematic literature review identified three major themes: (1) agile or flexible methodologies in multiproject environments, (2) human resources and labor allocation and scheduling, and (3) various factors affecting resource scheduling and allocation. This study provides an opportunity to scrutinize the past 10 years of research on the factors affecting resource allocation for simultaneous projects in programs, highlighting the main research themes and knowledge gaps, and proposing an agenda for future research.

关键词： Content management Technology management data analysis Project management Collaboration Organizations Scheduling Resource management Systematic literature review

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Mapping heavy metal distribution in soil by using GIS techniques: A case study in Hooc Mon district, Ho Chi Minh city, Vietnam 39

Mapping heavy metal distribution in soil by using GIS techni...

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39th Asian Conference on Remote Sensing: Remote Sensing Enabling Prosperity, ACRS 2018

作者： Tran, T.Q. Chou, T.Y. Hoang, T.V. Yeh, M.L. Chen, M.H. Fang, Y.M. danh, M. Tung, L.H. Ph.D Program of Civil and Hydraulic Engineering Feng Chia University Taiwan No. 100 Wenhwa Rd. Seatwen Taichung40724 Taiwan Department of Land Resources HoChiMinh City Institute of Resources Geography 01 Mac Dinh Chi St. Dist. 1 Ho Chi Minh City Viet Nam GIS research Center Feng Chia University Taiwan 100 Wenhwa Rd Situn Taichung40724 Taiwan

ISBN: (纸本)9781510879669

Metal concentration in urban soil is one of environmental problem that contributes directly or indirectly to the general life quality in city areas. The study site is located in Hooc Mon district, Ho Chi Minh City, Vietnam where is the home to many industrial activities and is the populous area. An investigation was conducted to determine the concentration of metals in urban soil;to perform an interpolation method for mapping the spatial distribution of heavy metal and understanding their contamination characteristics. There are 120 soil samples were collected by surveying for chemical analysis and determining amount of heavy metals. The Ordinary Kriging technique was applied to estimate the spatial distribution of metal concentrations at unknown points using a linear weight function of adjacent data points. The results showed that the spatial distribution of heavy metals is well interpolated. There are 3 major heavy metals contaminated in the study site including Cu, Pb and Zn. The highest contamination is found for Cu and Zn. The most elevated concentration of heavy metals was found at dong Thanh ward and the important pollutant source was suggested by dong Thanh landfill. Since spatial distribution and localization are the keys in controlling negative impacts of heavy metal of an area. determination of heavy metal levels and their spatial variations is essential for a better understanding possible risk for environment and human health in the study area. © 2018 Proceedings - 39th Asian Conference on Remote Sensing: Remote Sensing Enabling Prosperity, ACRS 2018

关键词： Kriging

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Network Analysis of Water distribution System in Rural Areas using EPANET

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Procedia engineering 2015年 119卷 496-505页

作者： G. Venkata Ramana Ch.V.S.S. Sudheer B. Rajasekhar Professor of Civil Engg. Dire Dawa Institute of Technology Dire Dawa University Ethiopia Lecturer Hydraulic & Water Resources Engineering Department Debre Tabor University Debre Tabor Ethiopia Ph.D Research Scholar Jawaharlal Nehru Technological University Hyderabad India.

In order to ensure the availability of sufficient quantity of good quality of water to the various section of community in accordance with the demand. Many computer tools were developed, out of all the tools available EPANET become most popular and convenient for the effective design of complex pipe networks. This paper highlights only the effective design and distribution of network of pipes using EPANET *** residual head at each and every node was found out by having the elevation as input and thereby the corresponding flow quantities were derived like residual head, velocity and nodal demand etc.

关键词： distribution network EPANET Nodal demand Effective design Mathematical models

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CA-GIS Model for dynamic Simulation of Commercial Activity development by the Combination of ANN and Bayesian Probability

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Procedia Computer Science 2013年 18卷 651-660页

作者： Shwu-Ting Lee Chih-Wen Wu Tsu-Chiang Lei Department of Architecture Feng-Chia University Taichung 40724 Taiwan Ph. D. Program in Civil and Hydraulic Engineering Feng-Chia University Taichung 40724 Taiwan Department of Urban Planning & Spatial Information Feng-Chia University Taichung 40724 Taiwan

Applying Artificial Intelligence (AI) techniques with Geographic Information System (GIS) in urban-related research is a surging trend recently. Artificial Neural Network (ANN) and Cellular Automata (CA) are two AI techniques discussed in this paper. ANN is known for its perceptron logic and CA is known for its dynamic evolvement mechanism. This paper offers the combination of ANN and Bayesian probability- named ‘BAANN’ process in order to integrate the advantages of ANN and CA. BAANN can transfer ANN outcome into the transition probability of target pattern, and cooperate with CA for operating dynamic simulation based on the perceptron logic. A specific experimental material is a kind of urban commercial phenomenon, which is the development of night market. The experimental CA model is implemented on GIS- named ‘CA-GIS’ model. CA-GIS model based on BAANN can perform high accuracy simulation and comprehensively evaluate land commercial value of night market. Additionally, the experiment of dynamic simulation can find out which places are the originally developing spots, and which zones would be sensitive to the situation of economic fluctuation.

关键词： Geographic Information System Artificial Neural Network Bayesian Probability Cellular Automata dynamic Simulation

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development of Epoxy/BN Composites with High Thermal Conductivity for Metal-Core Printed Circuit Board(MCPCB)

Development of Epoxy/BN Composites with High Thermal Conduct...

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2015 International Conference on Intelligent Materials and Manufacturing engineering (IMME 2015)

作者： Jae Hyun Choi Bong Goo Choi Min A Lee Jae-Sik Na Laboratory of Fiber Application and Manufacturing Department of Fiber and Composite MaterialsFeng Chia University School of Chinese Medicine “China Medical University” Department of Fashion Design Asia University Department of Ph.D Program in Civil and Hydraulic Engineering Feng Chia University Department of Land Management Feng Chia University The Department of Textile Engineering “Chinese Culture University” Institute of Biomedical Engineering and Materials Science “Central Taiwan University of Science and Technology”

The epoxy composites with high thermal conductivity for metal-core printed circuit board(MCPCB) can be prepared by varnish coating and a hot press method. Alumina filler of plate-like shape was used as primary micro-filler, while plate-like alumina filler, h-BN, a-BN and s-BN filler were used for blending into the plate-like alumina filler as the secondary filler. Results showed that the secondary fillers a-BN and s-BN loaded epoxy composites have higher thermal conductivity than alumina filler single-loaded composites. Also, BN filler has high thermal conductivity, but h-BN filled epoxy composite has lower thermal conductivity than alumina filled epoxy composite. The decrease of voids in epoxy composite are very important, and the filler shape and surface modification is also necessary to achieve high thermal conductivity in epoxy composite for MCPCB

关键词： MCPCB Epoxy composite Boron nitride Thermal conductivity Thermal diffusivity

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physical Properties of Geotextiles Reinforced by Recycled Kevlar Selvages

Physical Properties of Geotextiles Reinforced by Recycled Ke...

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2015 International Conference on Intelligent Materials and Manufacturing engineering (IMME 2015)

作者： Hee Jung Moon Bong Soo Lee Seung Hyun Cho Laboratory of Fiber Application and Manufacturing Department of Fiber and Composite MaterialsFeng Chia University School of Chinese Medicine "China Medical University" Department of Fashion Design Asia University Department of Ph.D Program in Civil and Hydraulic Engineering Feng Chia University Department of Land Management Feng Chia University The Department of Textile Engineering "Chinese Culture University" Institute of Biomedical Engineering and Materials Science "Central Taiwan University of Science and Technology"

Kevlar fiber are artifical fibers that have been globally commonly used due to their attributes of a high modulus, a low elongation, an impact resistance, a chemical resistance, and thermostability. Therefore, this study proposes nonwoven geotextiles by corporating with recycled Kevlar unidirectoinal selvage with a low production cost, crimped polyester(PET) fibers, and low-melting-point PET(LPET) fibers. The content of LPET fiber is specified as 20 wt%, while the content of Kevlar fiber varies as 0 wt%, 5 wt%, 10 wt%, 15 wt%, and 20 wt%. The optimal tear strength of 195 N occurs with a content of Kevlar fiber being 20 wt%.

关键词： Recycled Kevlar fiber Low-melting-point polyester(PET) fiber Nonwoven Geotextile

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Effects of Needle-Punch depth on Properties of PET/LPET/Kevlar Nonwoven Geotextiles

Effects of Needle-Punch Depth on Properties of PET/LPET/Kevl...

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2nd International Conference on Advanced Composite Materials and Manufacturing engineering, CMME 2014

作者： Lin, Jia Horng Hsieh, Jing Chzi Li, Jia Hsun Hsing, Wen Hao Lou, Ching Wen Laboratory of Fiber Application and Manufacturing Department of Fiber and Composite Materials Feng Chia University Taichung City 40724 Taiwan School of Chinese Medicine China Medical University Taichung 40402 Taiwan Department of Fashion Design Asia University Taichung 41354 Taiwan Department of Land Management Feng Chia University Taichung City 40724 Taiwan Department of Ph. D Program in Civil and Hydraulic Engineering Feng Chia University Taichung City 40724 Taiwan The Department of Textile Engineering Chinese Culture University Taipei 11114 Taiwan Institute of Biomedical Engineering and Materials Science Central Taiwan University of Science and Technology Taichung 40601 Taiwan

ISBN: (纸本)9783038350651

Geotextile has been commonly used in civil and geotechnical engineering applications, and the majority of geotextiles is made of nonwoven fabrics. Therefore, this study combines crimped polyester (PET) fibers, recycled Kevlar unidirectional selvage fibers, and low-melting-point PET (LPET) fibers to form PET/Kevlar/LPET nonwoven geotextiles, and then examines how various neelde-punch depths influence mechanical properties of the resulting nonwoven geotextiles. The tensile strength, tearing strength, bursting strength, and static puncture resistance of the nonwoven fabrics increase as a result of an increase of 0.3 cm to 0.5 cm in needle-punch depth. However, an increase of 0.5 cm to 0.7 cm causes a slight decrease in all aforementioned properties. © (2014) Trans Tech Publications, Switzerland.

关键词： Needles

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