Thesis (Master's)--Guo li zheng zhi da xue, 1978. / Cover title. Printed on double leaves. Includes bibliographical references.

Proefschrift--Leyden. / "Stellingen": leaf inserted. Bibliography: p. 141-145.

Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 353-367). Available also in a digital version from Dissertation Abstracts.

Thesis (M.A.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 72-80).

Thesis (M. Sc.)--University of Hong Kong, 2001. / Includes bibliographical references.

The present thesis aims to study the effect of human movements on local exhaust ventilation. In its simplest terms, local exhaust ventilation is a system which has the function of extracting contaminated air situated close to the contaminant source, protecting a working person from exposure to hazardous substances by containing or capturing them locally, at the emission point. As an important security measure referred to terms of health, it is crucial for the healthiness of workers to control and prevent them from the exposure to vapour, mist, dust or other airborne contaminants. Additionally, to a lesser degree of significance, it can be stressed an expected increase in worker performance due to an improvement of the working conditions. There is an existing necessity for well-defined and appropriate methods to test the performance of local exhaust devices in order to reach standard efficiency values. The lack of an international standardization led to the realization of this study, which, ultimately, has the purpose of obtaining relevant results that can be utilized for future normalized test procedures. The study entails full scale experimental measurements that include air velocity measurements in 3 dimensions, a local exhaust ventilation device with circular hood and a flat flanged plate and a controlled generation of air turbulence through physical movements of a human-sized cylinder, simulating a walking person. The present study extends previous similar studies at the University of Gävle, where the controlled air turbulence was generated by a moving plate. After meaningful results obtained in that study, one of the considerations was to better simulate a walking person, by replacing the plate for a movable cylinder. The present study points at a larger similarity occurring with a cylinder than with a plate, as regards the air flow pattern produced by a real walking person. As in the previous study, the Percentage of Negative Velocities, PNV, has been used as the main measure of turbulence induced risk of contaminant spread. The PNV represents the fraction of the time when the flow is directed opposite to the suction air stream in front of the local exhaust hood. The obtained results conclude that the use of the cylinder as a moving object has been an improvement to simulate the effect of the movement of a human being on a relaxed walking pace. The present study was carried out in parallel with the thesis work by Leyre Catalán Ros, which complements this study by analyzing the effect of an added heated dummy, simulating a person seated in front of the local exhaust device.

The local labour market has gained increased importance in the UK in recent years, as a focus for policy formulation and implementation. However, the local labour market is often illdefined in spatial terms, with the defmition being implicit rather than explicit, or standard administrative areas are used without any reasoned justification. Alternatively, within the UK, standard pre-defined areas, most usually official travel-to-work-areas (TTWAs) , are adopted as suitable proxies for local labour market areas. Recent concerns have been raised in the UK regarding the validity of this approach in many cases, and this was a feature of the 1998 review of the TrW As within the UK. To counter these diverse approaches, with the consequent implications for the efficacy of spatially targeted labour market policies, a definition of idealised spatial labour market areas is constructed. Further to this, a large-scale empirical analysis of commuting information from the Scottish results of the 1991 Census of Population is undertaken, to test whether idealised spatial labour markets can be identified for distinct occupational groups, disaggregated by gender. The results of the analysis confirm the improbability of achieving idealised spatial labour market definitions using commuting data. However, it is suggested that introducing a common metric for the definition of spatial labour markets should have a beneficial effect in terms of transparency of analysis and consistency of approach. Such a metric would make explicit the suitability of an area for consideration as a spatial labour market, and would include notions both of self-containment and internal coherence. It is contended that such an approach would be more flexible than the current approach using standard areas. It also has the potential to incorporate separate analyses for different gender, occupational groups, ethnicity or other personal characteristics, whilst still retaining many of the key concepts and measures which underpinned the development of TTWAs.

Recent decades have witnessed a substantial growth in mega and major sporting events paralleled by an equally dramatic competition amongst countries, towns, cities and stages that eager to host the events (Bull & Lovell, 2007:229). According to Darkey and Horn (2009:77), the hosting of international mega or major sport events in particular and their related tourism activities, presents the host country and its region with a unique opportunity to boost economic growth and social development. South Africa has been the world’s stage in hosting major and mega sports events that drew the world’s attention to this developing country of Southern Africa. The legacy of the Rugby World Cup 1995, the first mega event after the democracy in South Africa in 1994, the Cricket World Cup in 2003, the FIFA Confederations Cup 2009 and the latest FIFA World Cup 2010 are few examples of the opportunities provided by major and mega events (Jago et al., 2010:221). This study was aimed at determining the local residents’ perceptions of the impacts of the Confederations Cup 2009 within the city of Tshwane, as a host city. The data collection took place two (2) months prior to the event in 2009 and it covered nine (9) areas within Tshwane. The data was analysed using descriptive statistics and ANOVA, and the findings indicated that in general the respondents had a neutral perception of the impacts of the Confederations Cup 2009. This study provides future event planners and managers with insight into the hosting of mega and major events in terms of local resident’s support and participation in the event.

No description available.

This is a speculative examination of the feasibility of a productive local food system in rural Manitoba. It strives to provide tools and skills needed for producing food locally for the community of Ste. Agathe. The town was chosen due to its fertile flood plain, abundance of open green space, and lack of a local food source. The condition of America’s industrial food system is examined through research on apparent positive and negative effects it has on society. Ste. Agathe’s land use, cover and ownership are analyzed through mapping, followed by the examination of relevant existing and proposed alternative food production systems. The focus then shifts to existing local food initiatives in Manitoba and the characteristics of valuable crops and livestock suitable to the climate. This knowledge is applied to Ste. Agathe specifically through a series of suitability plans for each crop and livestock group, which when combined, result in a proposed framework plan, layout plans, sections, and perspectives.