• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 20
  • 2
  • Tagged with
  • 25
  • 25
  • 5
  • 4
  • 4
  • 4
  • 4
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Detecting increases in feature coupling using regression tests

Giroux, Olivier. January 1900 (has links)
Thesis (M.Sc.). / Written for the School of Computer Science. Title from title page of PDF (viewed 2007/08/30). Includes bibliographical references.
2

Environmental consideration a common sense approach to national planning /

French, D. F. January 1972 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1973. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
3

Minimizing carbon offset purchase| A framework for the reduction of greenhouse gas emissions in the building sector

Herrero-Garcia, Victoria 19 February 2016 (has links)
<p> Currently, GHG emissions from buildings represent approximately 44% of the total emissions in the U.S. (Architecture 2030, 2013b). Buildings are "in the grip of a dangerous greenhouse gas (GHG) habit " (Kirby, 2008, p. 6). Some researchers claim that if approximately two-thirds of the new and renovated stock in the U.S. will be built between now and 2050 (Ewing, Bartholomew, Winkelman, Walters, &amp; Chen, 2007), there is a significant potential for the building sector to reduce its emissions.</p><p> This thesis studies the main GHGs, their global warming potential (GWP) and the sources of emissions within buildings. In general, when thinking about GHG emissions reductions in buildings, the attention goes to reducing operations energy usage, since electricity from the combustion of fossil fuels is the most responsible for CO<sub>2</sub> emissions within buildings. But in fact, there are other GHG that can be reduced and whose GWP is higher than CO<sub> 2</sub>. Carbon neutral buildings reduce emissions in a holistic way, considering other sources of emissions rather than just operation (La Roche, 2012).</p><p> Building codes and regulations do not seem to give enough attention to GHG emissions reductions. Neither are some voluntary rating systems, such as LEED. LEED has been adopted as a benchmark for many Federal Agencies and institutions; usually the minimum requirement is to become LEED Silver certified, which is proven that is not enough for carbon neutrality (The American Institute of Architects, 2012b).</p><p> Finally, a framework has been developed to guide architects, builders and developers on how to design, build and operate a zero emissions building, thus minimizing the purchase of carbon offsets.</p>
4

Characteristics of construction safety trainers the challenges they experience, how they meet these challenges, and the relationships between selected characteristics of safety trainers and accident rates experienced by their trainees /

Barber, Herbert Marion. Snyder, William R. January 2003 (has links)
Thesis (Ph. D.)--Florida State University, 2003. / Advisor: Dr. William R. Snyder, Florida State University, College of Education, Dept. of Educational Leadership and Policy Studies. Title and description from dissertation home page (viewed Feb. 26, 2004). Includes bibliographical references.
5

Comparison of approaches for determining the failure of stiffened cylindrical shells /

Price, David J. January 2002 (has links)
Thesis (M.S. in Naval Architecture and Marine Engineering and M.S. in Mechanical Engineering)--Massachusetts Institute of Technology, 2002. / Includes bibliographical references (p. 57). Also available online.
6

Systems architecting approach to towing and salvage ship recapitalization

Southworth, George T. January 2008 (has links) (PDF)
Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, June 2008. / Thesis Advisor(s): Whitcomb, Clifford. "June 2008." Description based on title screen as viewed on September 2, 2008. Includes bibliographical references (p. 63-65). Also available in print.
7

Obtaining architectural descriptions from legacy systems the Architectural Synthesis Process (ASP) /

Waters, Robert Lee. January 2004 (has links) (PDF)
Thesis (Ph. D.)--Computing, Georgia Institute of Technology, 2005. / Rick Kazman, Committee Member ; Colin Potts, Committee Member ; Mike McCracken, Committee Member ; Gregory Abowd, Committee Chair ; Spencer Rugaber, Committee Member. Includes bibliographical references.
8

Natural determinism and the housing cluster outline & exploratory study /

Sharkawy, M. Atef. January 1900 (has links)
Thesis--University of Oregon, (1970?). / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (p. 39-42).
9

Borehole heat store design optimization

Nordell, Bo January 1994 (has links)
Seasonal heat storage, which is used to balance the supply of and demand for heat, e.g. in district heating networks, is necessary for the large-scale utilization of solar heat. The aim of this thesis was to study and develop seasonal heat storage to a point where it, if possible, would be an option in Swedish heating systems. Initial theoretical calculations indicated that the borehole heat store was feasible for seasonal heat storage. In the borehole heat store sensible heat is stored in the bedrock. The bedrock is penetrated by evenly spaced vertical boreholes, which are drilled within a square or circular land area. The holes work as heat exchangers between a heat carrier (normally water), which is pumped through the pipe system of the boreholes and the storage volume. Performed measurements in a pilot plant verified the predicted thermal behaviour of the store. A pre-design of a large-scale heat store, within the University area, was performed. After assuming the operation cycle and the properties of the store, the thermal behaviour of the Luleå heat store was simulated. The construction work of this large-scale borehole heat store (120,000 m 3) was studied in detail and the performance was evaluated during the first five years of operation. It was found that there were several short-comings in design, construction and operation. The operation of the heat pumps caused problems. The borehole pipes were incorrectly installed, which decreased the charged heat by 23% and recovered heat by about 34%. Without changing the storage task the store could have been built at a cost of 4.5 MSEK instead of 6.3 MSEK. A model was developed to determine the optimum design of borehole heat stores. The optimum design was defined as the design that fulfils the storage task at a minimum annual storage cost, i.e. the sum of the annual costs of the investment, operation, maintenance and heat loss. The optimum and actual designs of three stores were evaluated and compared. The more recently constructed plants differed less from the optimum design than the oldest plant, situated in Luleå. The main reason was the increasing engineering experience, which influenced the design of the later stores. Typical data for the optimum design are drilling depths of 125 m and a borehole spacing of 4 m. In a 1.6 GWh store, 65 boreholes result in a storage volume of about 125,000 m3. The specific construction cost, which decreases with increasing heat extraction capacity, is 1.50 SEK/ KWh or 20 SEK/m3 at an heat extraction capacity of 7 GWh. The annuity method (6%, 25 y) was used to calculate the annual investment cost, which stood for approximately 65% of the total annual storage cost. The sensitivity of the different parameters was investigated with the optimization model. It was demonstrated that the technical design of the store was greatly influenced by the cost parameters. For example, small changes in the drilling cost could mean a very different design. It was also found that it was cost-effective to investigate the soil depth and the rock thermal conductivity in detail before the design of the borehole heat store was performed. / Godkänd; 1994; 20070209 (ysko)
10

A geometrical-based approach to recognise structure of complex interiors

Abdul Shukor, Shazmin January 2013 (has links)
3D modelling of building interiors has gained a lot of interest recently, specifically since the rise of Building Information Modeling (BIM). A number of methods have been developed in the past, however most of them are limited to modelling non-complex interiors. 3D laser scanners are the preferred sensor to collect the 3D data, however the cost of state-of-the-art laser scanners are prohibitive to many. Other types of sensors could also be used to generate the 3D data but they have limitations especially when dealing with clutter and occlusions. This research has developed a platform to produce 3D modelling of building interiors while adapting a low-cost, low-level laser scanner to generate the 3D interior data. The PreSuRe algorithm developed here, which introduces a new pipeline in modelling building interiors, combines both novel methods and adapts existing approaches to produce the 3D modelling of various interiors, from sparse room to complex interiors with non-ideal geometrical structure, highly cluttered and occluded. This approach has successfully reconstructed the structure of interiors, with above 96% accuracy, even with high amount of noise data and clutter. The time taken to produce the resulting model is almost real-time, compared to existing techniques which may take hours to generate the reconstruction. The produced model is also equipped with semantic information which differentiates the model from a regular 3D CAD drawing and can be use to assist professionals and experts in related fields.

Page generated in 0.103 seconds