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  • 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.
601

Methodology for the Performance Evaluation of Ceiling Recessions for Vertical Floor Opening Protection

Grant, Steven January 2013 (has links)
Current Canadian Building Codes mandate prescribed design requirements for the protection of vertical floor openings by means of draft stops and closely spaced sprinklers. In the event that a design cannot meet the requirements, they also allow for the use of an alternative solution as long as the alternative solution can be proven to provide at least an equivalent level of performance as that prescribed in the Code. A commonly suggested alternative to the use of draft stops includes the construction of a recession at the perimeter of the floor opening; however, the performance of this design relative to that of an equivalent draft stop design has not been thoroughly evaluated. In this research, the available methods for the evaluation of ceiling recession designs are reviewed in order to identify appropriate tools with which to conduct such an analysis. While both analytical analysis and experimental testing could be used, experimental testing of the design is not considered here as this option would not commonly be pursued by design teams due to restrictions on both project budget and design timelines. From the available analytical tools, the fire modeling software Fire Dynamics Simulator (FDS) is selected for evaluation of the ceiling recession design due primarily to the ability of FDS to address complex geometries with appropriate spatial resolution to investigate details of flow and thermal profiles at the ceiling level in a larger compartment. Previous FDS studies are reviewed and an independent validation study is conducted in order to develop an analysis methodology which is appropriate for the evaluation of ceiling recession designs. A case study evaluation is conducted consisting of two dimensionally distinct ceiling recession configurations in the same compartment and two separate source fire heat release rates (HRR). Results are analyzed to evaluate the selected analysis methodology with respect to the characteristics of the simulated flow, and thermal detector response. Results show that the presence of an obstruction to the ceiling jet flow significantly improves thermal detector response where the source fire HRR is low. At higher source fire HRRs, the difference in activation time is found to be minimal amongst configurations of ceiling recession considered in the study. Predictions of thermal detector response time for a selected ceiling recession design are compared to predictions made for code-prescribed draft stop configuration as would be necessary for an alternative solution evaluation. Results indicate that ceiling recession designs provide a reduced level of performance at both low and high source fire HRRs when the thermal detector is placed at the recession ceiling level. In contrast, when the thermal detectors are located at distances greater than 80 mm below the upper ceiling, a design which is permitted by the Code, the performance of the ceiling recession appears better than that of the prescribed draft stop design. Results from the model for detectors placed at distances from the ceiling exceeding 40 mm, however, require further confirmation through experimental testing or additional modeling.
602

The prototype carbon Fund, a public/ private collaboration in the emerging environmental market.

Maheo, Solen. January 2007 (has links)
<p>This paper addresses the issue of the primary Prototype Carbon Fund objectives , which are High-Quality Emmissions reductions / knowledge dissermination / Public-private parterships. The researcher further invesigates whether, eight years after its creation, the Prototype Carbon Fund is a success.</p>
603

Weeds, people and contested places : selected themes from the history of New Zealanders and their weeds 1770-1940

Clayton, Neil, n/a January 2007 (has links)
This study examines three basic questions. Why did so many familiar floral species with which agricultural people have more or less successfully contested places for some 10,000 years apparently become highly problematic in New Zealand? How did those in whom the developing contest aroused considerable anxiety try to solve the problems they saw emerging? And what were the outcomes of their chosen courses of action? This study is organised around three main themes, science, the law and agricultural practices. Within each theme I take into consideration the ways New Zealanders used particular aspects of these broad disciplines to try to identify, understand and solve the problems they perceived to have been caused by their weedy biota. I also consider the extent to which recourse to these means has helped or hindered the ends they sought. The methodology adopted for this study is a variation of an 'organisational approach', advocated by the German environmental historian Frank Uekoetter. It focuses on the ways responses to perceived environmental problems are organised within a society. From my use of Uekoetter�s model I conclude that, despite a number of setbacks during the mid to late 19th century, by 1939 New Zealanders had developed highly dynamic processes within their weed science, extending into the wider farming community, by which they could feel their way with some confidence into a future where they might better manage the contest with their weeds, if not actually eradicate them.
604

The impact of human resource factors on employee attitudes and environmental performance in a sample of Malaysian ISO 14001 EMS certified companies

Kaur, Harjeet January 2008 (has links)
Despite the considerable existing body of academic literature, increasing employee motivation for environmental endeavors continues to be poorly understood. Recently Govindarajulu and Daily (2004) presented a comprehensive theoretical framework for environmental performance by looking at the crucial employer and employee factors affecting environmental performance. The authors identified management commitment, employee empowerment, feedback and review, and rewards as key human resource (HR) factors in increasing employee motivation for enhanced environmental performance. However, no published studies to date have empirically validated the framework. Therefore, one purpose of this dissertation is to address this void. Additionally, job satisfaction and organizational commitment were proposed as mediators in the relationship between the HR factors and environmental performance.
605

"She said..." "He said...": Cross applications in NSW apprehended domestic violence order proceedings

Wangmann, Jane Margaret January 2009 (has links)
Doctor of Philosophy (PhD) / This thesis examines the use of cross applications in civil protection order proceedings in New South Wales (NSW) (known as Apprehended Domestic Violence Orders, ADVOs). A cross application takes place when one person in an existing or former intimate relationship, usually the woman, applies for an ADVO and sometime afterwards the defendant in that originating application, usually the man, seeks an ADVO against the first person. The focus on cross applications provides a means to investigate the nature of men’s and women’s competing allegations about domestic violence, and to explore the way in which professionals working within the ADVO system approach, and seek to unravel, these competing claims. This thesis draws on the extensive debate within the sociological literature about ‘what is domestic violence’ and whether domestic violence is gendered in its perpetration. This debate has been paid scant attention in the legal literature. This thesis examines the assumptions underpinning the legal definitions and understandings of domestic violence in the civil protection order system, with reference to these theoretical debates about ‘what is domestic violence’ and ‘what counts as domestic violence’. To do so it draws on empirical work: semi-structured in-depth interviews with women involved in cross applications and key professionals working in the field, documentary analysis of court files, and observations of court proceedings. The key contribution of this thesis to this literature is threefold: (1) it explores the question of gender perpetration through the investigation of official data (a data source little explored in debates about gender and domestic violence), (2) it combines qualitative and quantitative methods in a single study, and (3) it extends questions about the gendered perpetration of domestic violence to the legal arena (in particular the prime legal arena that responds to domestic violence in NSW, the ADVO system, a system ostensibly designed to better respond to domestic violence). This thesis found that, like other studies in this field, the analysis of quantitative data alone reveals few differences between the types of violence men and women are alleged to use against their intimate partners. However when supplemented by qualitative data differences started to emerge particularly for men who lodged their application second in time. This qualitative analysis reveals not only that male second applicants appeared to make claims of a different nature, but that some men appeared to use the ADVO process to undermine women’s claims for legal protection. The differences that emerged between men and women’s alleged experiences of domestic violence resonated with feminist understandings of domestic violence that highlight its function of control and the repetitive, cumulative environment in which violence is perpetrated by men against women. While the study focussed on cross applications, its findings reveal a number of issues of concern for the ADVO system more broadly: its focus on incidents, the poor quality of complaint narratives, the brevity of court proceedings and the emphasis on settlement. These features undermine the progressive potential of the ADVO legislation to capture more than single incidents of largely physical violence. This was further compounded by the fact that while the professionals interviewed articulated broad definitions of domestic violence, this tended to be lost when responding to practice-orientated questions (here professionals returned to incident-based definitions). Perhaps more significantly the defining feature of domestic violence as a mechanism of control is not articulated in the NSW legislation, and hence (not unsurprisingly) was generally not articulated in the complaint narratives examined in this thesis. Yet control was the dominant way in which the women interviewed described their relationship with their former partner. The failure of complaint narratives to reflect the dimension of control, combined with the failure of key professionals to give sufficient emphasis to control in their practice under the ADVO legislation, an absence highlighted through the focus on cross applications, is an issue of concern for the ADVO system generally. This is important given the growing recognition in the research literature of the fundamental nature of control to the experience of domestic violence, particularly women’s experiences of domestic violence.
606

Alternatives to soil fumigation with methyl bromide for the management of soil-borne pathogens in vegetables

Ashley, M. Unknown Date (has links)
No description available.
607

The biology of parthenium hysterophorus L. in Australia

Navie, S. Unknown Date (has links)
No description available.
608

Alternatives to soil fumigation with methyl bromide for the management of soil-borne pathogens in vegetables

Ashley, M. Unknown Date (has links)
No description available.
609

Alternatives to soil fumigation with methyl bromide for the management of soil-borne pathogens in vegetables

Ashley, M. Unknown Date (has links)
No description available.
610

Alternatives to soil fumigation with methyl bromide for the management of soil-borne pathogens in vegetables

Ashley, M. Unknown Date (has links)
No description available.

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