检索结果-内蒙古大学图书馆

Classification Method fo Urban Solid Waste Disposal Sites

Journal of Environmental Protection 2011年第4期2卷 473-481页

作者： Adriana Soares de Schueler Claudio Fernando Mahler Department of Architecture and Urbanism Technology Institute Federal Rural University of Rio e Janeiro Program of Civil Engineering COPPE Federal University of Rio e Janeiro

One of the environmental liabilities left by abandoned urban waste disposal sites, closed without the correct procedures, is the risk of exposure to their effluents, whose emissions may occur for many years. The purpose of the proposed methodology, referred to as SISTAVAFE, an assessment system of a closed landfill, is to contribute in the risk assess- ment of exposure to leachate as well as to suggest procedures for site monitoring, according to different levels of care and urgency. The method is based on four matrices that help make an initial evaluation of the risk source, potential target and the surface and underground environmental paths. This paper only addresses the contamination caused by liquid effluents.

关键词： Environmental Impact Solid Waste Landfill Later Occupation Risk of Exposure Leachate Classification Tool Multi-Criteria Analysis

来源：评论

学校读者我要写书评

暂无评论

Erratum to: The analysis of 2004 flood on Kozdere Stream in Istanbul

引用

Natural Hazards 2012年第2期63卷 1279-1279页

作者： Hüseyin E. Çelik Gonca Coskun H. Kerem Cigizoglu Necati Ağıralioğlu Abdurrahim Aydın A. İlker Esin Department of Forest Engineering Division of Forest Construction and Transportation Faculty of Forestry İstanbul University Bahçeköy İstanbul Turkey Department of Geomatics Engineering Faculty of Civil Engineering İstanbul Technical University Maslak İstanbul Turkey Division of Hydraulics Faculty of Civil Engineering İstanbul Technical University Maslak İstanbul Turkey Faculty of Forestry Düzce University Düzce Turkey Irrigation Technology Program Vocational School of Forestry İstanbul University Bahçeköy İstanbul Turkey

来源：评论

学校读者我要写书评

暂无评论

Numerical simulation of UWB impulse radar vital signal detection at an earthquake disaster site 11

Numerical simulation of UWB impulse radar vital signal detec...

引用

1st International Conference on Wireless Technologies for Humanitarian Relief, ACWR 2011

作者： Liu, Lanbo Liu, Zijian Barrowes, Benjamin Xie, Hao Bagtzoglou, Amvrossios Vincitore, Antonio M. Civil and Environmental Engineering University of Connecticut Storrs CT 06269 United States Biomedical Engineering Program University of Connecticut Storrs CT 06269 United States Cold Regions Research and Engineering Laboratory USACE/ERDC Hanover NH 03755 United States United Technology Research Center 411 Silver Lane East Hartford CT 06108 United States

ISBN: (纸本)9781450310116

Using finite difference time domain numerical simulation approach we have investigated the use of ultra-wide band (UWB) radar techniques for vital signal detection in an earthquake debris environment. The model of earthquake debris resulting from a collapsed building was constructed based on a real earthquake disaster site in northeastern Tibet. The model consists of two human beings with different vital signals, i.e., with different cardio-respiration features, posed in different position, and buried at different depth in the debris. We start the model with a setup of single source multiple receiver impulse radar, and then expand the model to a setup of single-source and single receiver profiling case. This paper presents the simulation results using the UWB impulse radar technique and recommends the appropriate practice for earthquake rescue efforts. © 2011 ACM.

关键词： Debris

来源：评论

学校读者我要写书评

暂无评论

Effect of tunnel shape and support system on stability of a tunnel in a deep coal mine in China

45th US Rock Mechanics / Geomechanics Symposium

引用

45th US Rock Mechanics / Geomechanics Symposium 2011年

作者： Yu, Z.H. Kulatilake, P.H.S.W. Jiang, F.X. School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing China Geological Engineering Program Department of Materials Science and Engineering University of Arizona Tucson AZ 85721 United States

Stability level of tunnels that exist in an underground mine has a great influence on the safety, production and economic performance of the mine. Ensuring of stability for soft-rock tunnels is an important task for deep coal mines located in high in situ stress conditions. The aim of this study is to investigate the effect of tunnel shape and support pattern on the deformation, failure zone and stability around a tunnel located in a coal rock mass in China and to select an appropriate tunnel shape and a support pattern to provide stable stress-deformation conditions around the tunnel. Using the available information on stratigraphy, geological structures, in situ stress measurements and geo-mechanical properties of intact rock and discontinuity interfaces, a three-dimensional numerical model was built by using FLAC software to simulate the stress conditions around the tunnel in the coal rock mass. Analyses were conducted for several tunnel shapes and rock support patterns. Results obtained for the distribution of failure zones, and stress and displacement fields around the tunnel were compared to select the best tunnel shape and support pattern to achieve the optimum stability conditions. © 2011 ARMA, American Rock Mechanics Association.

关键词： Coal mines

来源：评论

学校读者我要写书评

暂无评论

Fostering innovation and entrepreneurship through the integration of engineering and liberal education

Fostering innovation and entrepreneurship through the integr...

引用

118th ASEE Annual Conference and Exposition

作者： Traver, Cherrice Klein, J. Douglass Mikic, Borjana Akera, Atsushi Shooter, Steven B. Epstein, Ari W. Gillette, David Union College United States Department of Economics Union College United States Picker Engineering Program Smith College United States Department of Science and Technology Studies Rensselaer Polytechnic Institute 110 8th Street Troy NY 12180 United States Department of Mechanical Engineering Bucknell University United States Department of Civil and Environmental Engineering Massachusetts Institute of Technology United States California Polytechnic State University San Luis Obispo United States

There is growing urgency to graduate more innovative engineers. This paper explores ways to foster the innovative capacity of undergraduate engineering students by challenging them with big questions, and introducing them to multiple perspectives. Students today are inspired by big questions that matter, like the NAE Grand Challenges. Students are aided in finding innovative solutions to these big, open-ended, questions by having them learn to entertain and explore multiple perspectives. While the importance of integrative thinking is recognized in ABET's EC-2000 (e.g. criteria (c), (h) and (j)), and integrative approaches are known to appeal to women and other underrepresented groups, there is still far too little integration in the undergraduate engineering curriculum. The paper describes concrete examples of how to foster innovative and entrepreneurial capacity in engineering undergraduate students by harnessing the diverse and creative perspectives common to a liberal education. We draw on curricular and extra-curricular examples developed by participants in the Symposium on engineering and Liberal Education (E&LE). The Symposium was inaugurated in 2008 as a forum to explore the rationale and methods of E&LE integration. For three years, the Symposium has brought together academic leaders and scholars from both engineering and the liberal arts to explore models for integrating engineering and the traditional liberal arts. The examples presented are grouped into five different aspects of undergraduate engineering education, addressing different phases of students' progress, recognizing that fostering innovation must be a continuous process: 1. Projects that focus on first year or introductory material 2. Projects that focus on core engineering courses 3. Projects that focus on capstone and extra-curricular experiences 4. Projects that span the curriculum 5. Faculty professional development to support projects The paper also reviews research results linking innova

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Enhancing student learning in structures courses with building information modeling

Enhancing student learning in structures courses with buildi...

引用

2011 ASCE International Workshop on Computing in civil engineering

作者： Barham, Wasim Meadati, Pavan Irizarry, Javier Civil and Construction Engineering Southern Polytechnic State University 1100 South Marietta Parkway Marietta GA 30060 United States Southern Polytechnic State University 1100 South Marietta Parkway Marietta GA 30060 United States Building Construction Program Georgia Institute of Technology 280 Ferst Drive Atlanta GA 30332 United States

This paper presents the findings of a study conducted to evaluate the effectiveness of Building Information Modeling (BIM) in enhancing student learning in structural concrete design courses. In reinforced concrete design, three dimensional (3D) visualization of concrete members can advance students understanding of reinforcement details and rebar-placement. BIM facilitates the usage of 3D views in teaching such courses and provides opportunities to address the challenges faced by the students during the visualization process. A study involving the use of BIM 3D views were conducted in two courses over a one-semester period. In the study, improvements in student performance were observed in several of the problems presented when 3D models were used. BIM has the potential to provide faculty with a tool that can improve teaching of structural design courses in a more visual and interactive way and greatly enhance the educational experience of the students. © 2011 ASCE.

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Planar marker-based localization of a robotic fish in a public aquarium

Planar marker-based localization of a robotic fish in a publ...

引用

International Conference on Control, Automation and Systems ( ICCAS)

作者： Donghwa Lee Donghoon Kim Hyun Myung Department of Civil and Environmental Engineering KAIST Daejeon South Korea Robotics Program KAIST Daejeon South Korea Korea Advanced Institute of Science and Technology Daejeon Daejeon KR

A robotic fish localization system in a public aquarium is presented in this paper. The system is built on the marker-based camera pose estimation method. A webcam, an ARM processor, and multiple planar markers are employed for real-time camera pose estimation. The camera is attached at the bottom of the head of the robotic fish. Since the camera and the fish body are connected rigidly, the pose estimation method gives the absolute 6 degree of freedom (DOF) location of the robotic fish. The experiments above ground and underwater validate the proposed localization system. Through the tests in a public aquarium with the integrated robotic fish system, the autonomous swimming was successfully demonstrated.

关键词： Cameras Robot vision systems Estimation Machine vision Transmission line matrix methods

来源：评论

学校读者我要写书评

暂无评论

Work in progress — Merging science inquiry and engineering design: A summer workshop series for middle and high school science teachers

Work in progress — Merging science inquiry and engineering ...

引用

Frontiers in Education (FIE) Conference

作者： Patricia Carlson Peter Hylton Michael Robinson Renee Rogge Justin Shearer Maarij Syed Deborah Walter The PRISM Program Rose-Hulamn Institute of Technology USA Mechanical Engineering Technology Indiana University Purdue University Indianapolis USA Civil and Environmental Engineering Rose-Hulamn Institute of Technology USA Applied Biology and Biomedical Engineering Rose-Hulamn Institute of Technology USA Chemistry and Biochemistry Rose-Hulamn Institute of Technology USA Physics and Optical Engineering Rose-Hulamn Institute of Technology USA Electrical and Computer Engineering Rose-Hulamn Institute of Technology USA

We report on a two-week professional development workshop for middle and high school science teachers offered as part of a three-year Indiana Department of Education Math-Science Partnership grant awarded to Rose-Hulm... 详细信息

关键词： Conferences Materials Educational institutions engineering education Standards Adaptation models

来源：评论

学校读者我要写书评

暂无评论

Potential Issues and Challenges in Implementing the Railroad Safety Improvement Act of 2008 Based on a National Survey

引用

Journal of Transportation Safety and Security 2011年第4期3卷 252-271页

作者： Liu, Rongfang Huang, Zhaodong Hao, Wei New Jersey Institute of Technology Department of Civil and Environmental Engineering University Heights Newark NJ 07102 United States New Jersey Institute of Technology Interdisciplinary Transportation Program University Heights Newark NJ United States

Highway-rail crossing safety is a critical issue, highlighted by the recently enacted Rail Safety Improvement Act (by the U.S. Congress. This article documents a national survey of peer state agencies as part of the effort to better understand the current issues of highway-rail grade crossing inspection and best practices in vegetation blockage clearance in the visibility triangle. The authors conducted an extensive literature review, in-depth dialogs with a few selected agencies, and focused on case studies to obtain realistic assessments of current practices in highway-rail grade crossing inspections. Potential issues and concerns in the implementation of the Rail Safety Improvement Act are highlighted. © 2011 Copyright Taylor and Francis Group, LLC.

关键词： highway-rail grade crossing safety rail safety improvement act safety triangle sight distance vegetation clearance

来源：评论

学校读者我要写书评

暂无评论

FLOATING RATE OF FRAZIL ICE PARTICLES IN FLOWING WATER IN BEND CHANNELS——A THREE-DIMENSIONAL NUMERICAL ANALYSIS

引用

Journal of Hydrodynamics 2010年第1期22卷 19-28页

作者： WANG Jun LI Qing-gang SUI Jue-yi School of Civil Engineering Hefei University of Technology Hefei 230009 China Environmental Engineering Program University of Northern British Columbia British Columbia Canada V2N4V9

In this article, based on the theory of two-phase flow and laboratory data, a three-dimensionally model is developed to simulate the floating rates of frazil ice particles in water under covered condition. The Lagrangian trajectory method is used in the three dimensional simulation for floating rates of fxazil ice particles along a 180° bend channel. The velocity profiles in longitudinal and transverse directions, the turbulence intensity, and the residual pressure are simulated. Under the condition of gravitational similarity, the simulated floating rates of frazil ice particles in the model bend channel and the prototype bend channels are compared. Results indicate that the profiles for floating rates of ice particles for flows in the model channel are similar to those in the prototype bend channels. The simulated floating rates of ice particles are clearly higher along the convex bank than along the concave bank at each cross section. For the prototype bend channel in a large model scale, the variation of floating rate across each cross section is relatively small.

关键词： frazil ice particles model scale floating rate two-phase flow bend channel ice accumulation （ice jam）

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：