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作者： Wright, Christopher Bernal, Dionisio Graduate Student IGERT Program Northeastern University Department of Civil and Environmental Engineering 360 Huntington Ave. Stearns 11 Boston MA 02115 United States Northeastern University Department of Civil and Environmental Engineering Center for Digital Signal Processing United States

ISBN: (纸本)9781441998330

Deviations from whiteness in the innovations of a Kalman filter indicate that the filter is not optimal for the given data. Lack of optimality can come from changes in the system properties but also from discrepancies between the noise statistics used to formulate the filter and the actual values. This paper examines the importance that changes in the noise part of the filter have on its ability to function as a damage detector. Analysis and numerical results show that the sensitivity is such that a realistic assessment of performance demands that potential fluctuations in the noise statistics be accounted for. ©2010 Society for Experimental Mechanics Inc.

关键词： Damage detection

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Sustainable alternatives in developing countries: Preliminary performance assessment and design optimization on the Fitima children's day care and medical centre in Ouagadougou, Burkina Faso

Sustainable alternatives in developing countries: Preliminar...

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27th International Conference on Passive and Low Energy Architecture: Architecture and Sustainable Development, PLEA 2011

作者： Liu, Ning Jobard, Nicolas School of architecture Civil and Environmental Engineering Swiss Federal Institute of Technology Lausanne Switzerland EPFL-UCL-ENSA Toulouse Post-Graduate Architecture and Sustainable Development Building for Climate Associated Architects-Urbanists Paris France

ISBN: (纸本)9782874632761

Nowadays more than 70% of the world population live in the developing countries. To tackle the global challenges of Climate Change, it is vital to create a network of know-how on sustainable design issues between the industrialised world and the developing world. This paper reviews the adaptability of some acknowledged passive sustainable principles in the case of a NGO financed building project in Ouagadougou, Burkina Faso. A multi-fold assessment grid is formulated to evaluate the performances of the initial building schemes. The study also combines the methodical analysis with the use of digital tools for the data provision and comparison. The optimization results demonstrate the positive impact of a solid preliminary assessment phase in the building conception process. Especially in poor countries where materials and equipments are limited, the preliminary study is decisive to make the intelligent use of available budget and resources.

关键词： Developing countries

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Corrigendum to “Unintended consequences of regulating drinking water in rural Canadian communities: Examples from Atlantic Canada” [Health and Place 17(5) (2011) 1030–1037]

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Health & Place 2012年第2期18卷 446-446页

作者： Megan Kot Heather Castleden Graham A. Gagnon Interdisciplinary PhD Program Faculty of Graduate Studies Dalhousie University Halifax Nova Scotia Canada B3J 1Z1 School for Resource and Environmental Studies Faculty of Management Dalhousie University Halifax Nova Scotia Canada B3H 4R2 Civil and Resource Engineering Faculty of Engineering Dalhousie University Halifax Nova Scotia Canada B3J 1Z1

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Abstracts Of Shellfish Technical Papers Presented at the joint meeting of the Northeast Aquaculture Conference and Exposition Milford Aquaculture Seminar and the International Conference on Shellfish Restoration Groton, Connecticut December 12–15, 2012

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Journal of Shellfish Research 2013年第2期32卷 571-612页

作者： Walter Blogoslawski Christopher Davis Dorothy Leonard Lisa Milke Steven Allen Peter Bergstrom A.C. Carpenter Mark Luckenbach Kennedy Paynter Angela Sowers Eric Weissberger James Wesson Stephanie Westby Steven Allen Stephanie Westby Claire O'Neil Angela Sowers Eric Weisberrger Oliver Bender Peter Boyce Gabriel Betty Mark Borrelli Anamarija Frankic Curtis Felix Jennifer Wilson Peter Boyce Oliver Bender Suzanne Bricker Tessa Getchis Cary Chadwick Julie Rose Cori Rose Kelsey Brockett Jessica Peterman David Bushek Daphne Munroe Eric Powell Lisa Calvo Barney Hollinger William Riggin William Shadel Jenny Paterno Ryan Carnegie David Bushek Carole Cyr Lisandre G. Solomon Francoise Bourque Tyler Carrier Stephen Eddy Sarah Redmond James Cervino Rand Weeks Jason Shorr Carmen Lin Dajana Gjoza Thomas J. Goreau Erik Chapman Derrick Chelikowsky Diane Kapareiko Dorothy Jefferess Gary Wikfors Carmela Cuomo Joseph Choromanski Sheila Stiles Dorothy Jeffress Haley Ladeau Loren Coen Boze Hancock Lesley Baggett Sean Powers Rob Brumbaugh Summer Morlock Bryan DeAngelis Anne Cohen Daniel McCorkle Gail Schwietermann Kathryn Rose Dave Conley SaiGiridhar Dasika April Croxton Soren Dahl Debra Barnes Bassem Allam Jonathan Davis Brian Allen Betsy Peabody Jonathan Davis Julie Davis William Walton Donatella Del Piero Michael Devin Molly Flanagan Paul Rawson Chauncey Devin Dana Morse Mark S. Dixon Genevieve Bernatchez Kelsey Boeff Eve Galimany Yaqin Li Aynur Lok Shannon L. Meseck Marguerite Petit Sean Dixon Sam Lee Dennis O'Connor Kelly Drake Shelley Edmundson Elizabeth Fairchild Melissa Evans Allison Fitzgerald Chester Zarnoch William Wallace Amy Fitzpatrick Gef Flimlin Sandra Macfarlane Gef Flimlin Thomas Foca David Bushek Timothy Visel Walter Blogoslawski Deborah A. Bouchard Joseph Buttner John Ewart Ann Faulds George E. Flimlin Doris Hicks Craig Hollingsworth Andrew Lazur Dale Leavitt Dennis McIntosh Dana L. Morse Tom Rippen Gregg Rivara Roxanna Smolowitz Dan Terlizzi Don Webster Michael Chambers Diane C. Murphy Robert Pomeroy Josh Reitsma Mic U.S. Department of Commerce National Oceanic and Atmospheric Administration National Marine Fisheries Service Northeast Fisheries Science Center Milford Laboratory 212 Rogers Avenue Milford CT 06460 Maine Aquaculture Innovation Center 5717 Corbett Hall Room 436 Orono ME 04469 Ocean Equities LLC 776 Rolling View Drive Annapolis MD 21409. Oyster Recovery Partnership 1805A Virginia St Annapolis MD 21401 NOAA Chesapeake Bay Office 410 Severn Ave Suite 207-A Annapolis MD 21403 Potomac River Fisheries Commission 222 Taylor St Colonial Beach VA 22443 Virginia Institute of Marine Science Eastern Shore Laboratory PO Box 350 Wachapreague VA 23480 1213 HJ Patterson Hall University of Maryland College Park MD 20742 U. S. Army Corps of Engineers Baltimore District P.O. Box 1715 Baltimore MD 21203 Maryland Department of Natural Resources 580 Taylor Ave Annapolis MD 21401 Virginia Marine Resources Commission 2600 Washington Ave Newport News VA 23607 NOAA Restoration Center 410 Severn Ave Annapolis MD 21403. Oyster Recovery Partnership 1805A Virginia St Annpolis MD 21401 National Oceanographic and Atmospheric Administration 410 Severn Ave Suite 107-A Annapolis MD 21403 USA Army Corps of Engineers 10 South Howard St Baltimore MD 21201 Maryland Department of Natural Resources 580 Taylor Ave Tawes State Office Building Annapolis MD 21401. Maria Mitchell Association 4 Vestal St Nantucket MA 02554 Maria Mitchell Association 65 Meadowview Drive Nantucket MA 02554. University of Rhode Island 620 Main St. Hopkinton RI 02832. Provincetown Center for Coastal Studies 5 Holway Avenue Provincetown MA 02657 University of Massachusetts Boston 100 Morrissey Blvd Boston Massachusetts Boston MA Town of Wellfleet 300 Main Street Wellfleet Massachusetts MA 02667. Maria Mitchell Association 65 Meadowview Dr Nantucket MA 02554. NOAA National Center for Coastal Ocean Science 1305 East West Highway Room 8110 Silver Spring MD 20910 Connecticut Sea Grant University o

It was with great excitement that we planned the combined meetings of Northeast Aquaculture Conference and Exposition (NACE) and the International Conference on Shellfish Restoration (ICSR) with the 33rd Milford Aquaculture Seminar (MAS). Bringing these different but complementary audiences together resulted in a meeting that combined many different aspects of fisheries restoration and aquaculture under one *** hundred attendees including government representatives, research scientists, industry, and academia at both the university and vocational high school levels attended this event. The meeting commenced on Wednesday December 12th 2012, with over eighty people attending seven field trips to area aquaculture farms and research facilities. The formal program began on Thursday, December 13th with a plenary session including invited speakers Eric Schwabb, Acting Assistant Secretary for Conservation and Management at NOAA; Sebastian Belle, Executive Director of the Maine Aquaculture Association and Boze Hancock from the Nature Conservancy, who discussed the role of aquaculture in fisheries restoration. John Bullard, the Northeast Regional Administrator of NOAA Fisheries Service, addressed the group during the luncheon the following day. The technical papers and workshops presented were divided into 35 sessions over three days of the meeting and included topics such as the history of aquaculture, aquaculture hatchery innovations, siting and planning issues, risk management, aquaculture business management, ocean acidification, climate change, as well as aquaculture disease issues and potential remedies. Having persons present who have experienced problems and successes, along with those in manufacturing and government responsible for addressing concerns and sharing best practices, was invaluable. Discussions among this cross-section of persons who represent different aspects of aquaculture were as important as the well-presented and interesting formal papers

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Accuracy Improvement of ASTER Stereo Satellite Generated DEM Using Texture Filter

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Geo-Spatial Information Science 2010年第4期13卷 257-262页

作者： Mandla V.Ravibabu Kamal Jain Surendra Pal Singh Naga Jyothi Meeniga Center for GIS School of Geography and Environmental ScienceMonash UniversityClayton CampusVICAustralia Environmental Water Resource and Transportation Engineering DivisionSchool of Mechanical & Building ScienceVellore Institute of Technology(VIT)-University Vellore-632 014Tamil NaduIndia Geomatics Engineering Section Department of Civil EngineeringIndian Institute of Technology RoorkeeRoorkee-247667U.A.India Post Graduate Student(GST) Institute of Science and TechnologyJNTUHyderabadIndia

The grid DEM(digital elevation model) generation can be from any of a number of sources:for instance,analogue to digital conversion of contour maps followed by application of the TIN model,or direct elevation point modelling via digital photogrammetry applied to airborne images or satellite ***,apart from the deployment of point-clouds from LiDAR data acquisition,the generally favoured approach refers to applications of digital *** of the most important steps in such deployment is the stereo matching process for conjugation point(pixel) establishment:very difficult in modelling any homogenous areas like water cover or forest canopied areas due to the lack of distinct spatial *** a result,application of automated procedures is sure to generate erroneous elevation *** this paper,we present and apply a method for improving the quality of stereo DEMs generated via utilization of an entropy texture *** filter was applied for extraction of homogenous areas before stereo matching so that a statistical texture filter could then be applied for removing anomalous evaluation values prior to interpolation and accuracy assessment via deployment of a spatial correlation *** exemplification,we used a stereo pair of ASTER 1B images.

关键词： ASTER digital elevation model extraction stereo matching texture filter quality improvement

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Investigation of the supply chain of prefabricated wooden doors

Investigation of the supply chain of prefabricated wooden do...

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18th Annual Conference of the International Group for Lean Construction, IGLC 18

作者： De Melo, Reymard Sávio S. Da Alves, Thais C.L. Graduate Program in Structural Engineering and Construction Federal University of Ceará Fortaleza CE Brazil J.R. Filanc Construction Engineering and Management Program Department of Civil Construction and Environmental Engineering San Diego State University San Diego CA 92182-1324 United States

This study focused on pre-fabricated wooden doors and their supply chain, which have all of its components pre-assembled by the supplier. The literature indicates that supply chain management in construction has four roles. One concerns the transfer of activities from the site to the supply chain to take advantage of better conditions at the fabricator's end. This role assumes that fabricators are in a better environment to perform certain tasks and deliver better products that can be quickly installed on site, as the product is pre-assembled. This is the first working hypothesis tested in study. A second working hypothesis is that off-site prefabricated doors have short lead times for fabrication and on-site installation and present fewer problems during installation when compared to traditional doors. The two-phase research comprised a preliminary study and two in-depth case studies about pre-fabricated wooden doors. Wooden doors presented problems related to the installation and final product quality regardless of the type of project. Some advantages of prefabricated elements were lost due lack of trust between contractors and suppliers, lack of consideration of preconditions necessary for successful site installation, and lack of standardization and tolerance management resulted in suboptimal solutions during the installation phase.

关键词： Fabrication

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A strategic way for promoting improved seismic resistant techniques to Indonesian builders

A strategic way for promoting improved seismic resistant tec...

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9th US National and 10th Canadian Conference on Earthquake engineering 2010, Including Papers from the 4th International Tsunami Symposium

作者： Wijanto, Sugeng Andriono, Takim Tjondro, Johannes Adhijoso P.T. Gistama Intisemesta Jakarta Indonesia Civil Engineering Department Trisakti University Jakarta Indonesia P.T. Gistama Intisemesta Surabaya Indonesia Post Graduate Program Petra Christian University Surabaya Indonesia Civil Engineering Department Parahyangan Catholic University Bandung Indonesia

ISBN: (纸本)9781617388446

Indonesia is located in a seismically prone area. During the Aceh 2004, Yogyakarta 2006, Padang 2009 earthquakes, many casualties were caused by the collapse of buildings. Due to lack of awareness, knowledge and skills, many of these buildings, particularly non-engineered houses, were rebuilt using non-seismic resistant techniques as used previously. In cooperation with the World Housing Encyclopedia (WHE), a strategic way for promoting improved seismic resistant construction to Indonesian builders has been implemented. Architectural and civil engineering students are involved. A special tutorial is conducted periodically by seismic engineering experts to enable these students to learn practical seismic resistant techniques for designing and constructing single to two storey dwellings as well as multi storey reinforced concrete buildings. During their studies they are assigned to promote these techniques to the community at large and to builders in particular. A student e-network is set up to enable them to exchange ideas and encourage each other. The first phase of this effort is reported in this paper.

关键词： Students

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Interdisciplinary graduate education in water and environmental resources in 2050

Interdisciplinary graduate education in water and environmen...

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World environmental and Water Resources Congress 2010: Challenges of Change

作者： Saito, Laurel Fiedler, Fritz Cosens, Barbara Kauneckis, Derek Department of Natural Resources and Environmental Science Graduate Program of Hydrologic Sciences University of Nevada Reno NV United States Department of Civil Engineering Waters of the West Graduate Program University of Idaho United States College of Law Waters of the West Program University of Idaho United States Department of Political Science University of Nevada Reno NV United States

ISBN: (纸本)9780784411148

The science and management of environmental- and water-related issues requires an interdisciplinary approach, as recognized by funding agencies, consulting firms, and public organizations. In their role of preparing students for productive professional careers, academic institutions should be able to train students in interdisciplinary approaches, but complications exist in current academic environments that make interdisciplinary education especially challenging. We provide a vision of interdisciplinary graduate education in water and environmental resources in 2050 after presenting a brief assessment of current issues in interdisciplinary education. © 2010 ASCE.

关键词： Water resources

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A preliminary investigation of polymer modified hydrated cement paste prisms and the fracture analysis of tested specimens

A preliminary investigation of polymer modified hydrated cem...

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ACI Spring 2010 Convention

作者： Belkowitz, J. Best, M. Nilsen, M. Fisher, F. Armentrout, D. Stevens Institute of Technology United States Ninyo and Moore Geotechnical and Environmental Consultants Denver CO United States Civil Engineering Technology Program Metro State College Denver United States Lafarge's Western US Region Denver CO United States Department of Mechanical Engineering Stevens Institute of Technology United States Nanotechnology Graduate Program Stevens Institute of Technology United States Department of Mechanical and Materials Engineering University of Denver United States

ISBN: (纸本)9781618392060

The following paper documents the preliminary experimentation and analysis of a polymer fortified hydrated cement sample. Concrete is a brittle construction material. When compared to other construction materials, concrete can offer competitive structural resistance under compressive loads. But due to the brittle nature of the hydrated cement matrix, C-S-H network, concrete is poor when resisting flexural loads. The brittle C-S-H structures cannot absorb the flexural energy like a ductile material. The properties of concrete fracture are analyzed at the microscopic level to understand the method of failure. By including the acrylic polymer into the hydrated specimens it was the belief of the authors that the acrylic polymer would enhance the fracture behaviour of the concrete in flexure. The C-S-H hydrates precipitate from a saturated solution. The acrylic polymer, after being mixed into the cement paste while still fresh, becomes secured in the C-S-H structure as said structure hardens. Samples were cast, cured, and tested in order to determine if the acrylic polymer cause the C-S-H structure to behave in a ductile manner. The testing included compressive and flexural stress tests with microstructure observation via Scanning Electron Microscope (SEM). The compressive and flexural tests were used to discern a measured value of gain when using an acrylic polymer compared to a control mix. The SEM images were used to determine crack origin, type of failure, and acrylic polymer benefit. The tests and SEM images revealed that there was a negative reaction between the admixtures to cause an excessive air generation. Despite the setback, the SEM images revealed evidence of energy absorbing of the acrylic polymer mix.

关键词： Scanning electron microscopy

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Co-processing of grinding sludge as alternative raw material in portland cement clinker production

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Journal of Applied Sciences 2010年第15期10卷 1525-1535页

作者： Punmatharith, T. Rachakornkij, M. Imyim, A. Wecharatana, M. International Postgraduate Program in Environmental Management Graduate School Chulalongkorn University Bangkok 10330 Thailand National Center of Excellence for Environmental and Hazardous Waste Management Chulalongkorn University Bangkok 10330 Thailand Department of Environmental Engineering Faculty of Engineering Chulalongkorn University Bangkok 10330 Thailand Department of Chemistry Faculty of Science Chulalongkorn University Bangkok 10330 Thailand Department of Civil and Environmental Engineering Faculty of Engineering New Jersey's Science and Technology University Newark NJ 07102-1982 United States

This research aimed to investigate the potential of partial substitution of cement raw meal with grinding sludge as an alternative raw material in Portland cement clinker production. Cement raw mixtures with up to 3% raw mix replacement were put through a burning process in a high-temperature furnace. One reference and three modified mixtures, containing 1, 2 and 3% dry weight of grinding sludge were examined. XRF analysis results showed that CaO, SiO2, A12O3 and Fe2O3 in ordinary cement raw meal were within typical concentration ranges. The grinding sludge had high concentrations of iron, cadmium, chromium and nickel and was consequently classified as a hazardous waste. High Fe2O3 made the grinding sludge a good candidate for alternative raw material. Higher replacement of grinding sludge was found to improve burnability, reduce formation of major of cement compositions (dicalcium silicate, C2S and tricalcium aluminate, C3A), lower in silica and alumina ratios, but promote the formation of tricalcium silicate (C3S) and tetracalcium aluminateferrite (C4AF). Microstructural analysis of the synthesized Portland clinker revealed that the grinding sludge promoted formation of secondary C2S as well as caused color change of C3S. Thai regulatory leaching procedure was performed on the synthesized clinker and mortar samples. The concentrations of heavy metals in the leachate were found below the limits. Moreover, the maximum substitution of grinding sludge was found to be 2% of grinding sludge. Thus, this sludge has potential applications as an alternative raw material in cement production. © 2010 Asian Network for Scientific Information.

关键词： Heavy metals

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