Thesis (PH. D.)--Columbia University. / Digitization funded by Institute of Museum and Library Services, 2001-2003. Preserving the Core historical literature of home economics before 1950. Vita.

Thèse--Université de Lausanne. / "Bibliographie": p. [335]-342.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1982. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 258-265).

Thesis (M.S.)--Rochester Institute of Technology, 2007. / Typescript. Includes bibliographical references (leaves 159-162).

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Reliable routing using alternate paths is investigated in this dissertation. We propose precalculated alternate paths as a method for fast recovery from link and node failures in IP networks. We demonstrate that path switching time, and thus failure recovery time are, as expected, considerably faster than the standard method of recalculating a new path on the fly. However, to be effective, the alternate paths should share a minimal set of links and nodes - preferably none - with the failed path. As shared links are considered in this work, we give a reliability model for this situation (non-disjoint alternate paths) and develop estimates of reliability as a function of the number of shared links. Alternate path finding algorithms to calculate suitable alternate paths subject to predefined constraints are also developed. Implementation of these techniques for improving routing reliability is shown to be straightforward for explicit routing protocols such as Multi-Protocol Label Switching (MPLS) with Explicit Routing mode. This mode is expected to be the protocol of choice for applications requiring guaranteed Quality of Service (QoS) carried on the coming generation of wavelength-switched networks (Internet II, CA Net III, etc.) We propose a Reliable MPLS (R-MPLS) protocol by applying alternate path routing to MPLS, using our new algorithms to precalculate appropriate alternate paths. Simulation results show that R-MPLS can achieve fast recovery from failures. We also address reliability issues for the problem of optimal Service Level Agreement (SLA) admission control. To achieve reliable admission control, we apply alternate path routing to an existing SLA-based admission controller called SLAOpt. In the existing Utility Model, SLA admission control is mapped to the Multiple-Choice Multi-Dimension Knapsack Problem (MMKP), where the aim is to maximize system utility (i.e., revenue). However, SLAOpt is static in terms of network topology and does not consider reliability. Motivated by this, we propose a Reliable SLAOpt (R-SLAOpt), in which utility optimization is subject to the additional constraint of reliability. A new algorithm was also developed to calculate multiple groups of alternate paths that meet the desired QoS demands and reliability requirement. After QoS adaptation, R-SLAOpt selects an appropriate path group containing two or three paths for each admitted session and performs resource reservation on all paths in the group. In the event of node or link failure, a session can be quickly switched to one of the alternate paths, maintaining the guaranteed QoS without having to run the full admission algorithm again. In this way, we have obtained a unified treatment of routing reliability and optimal SLA admission control. Finally, simulations are presented which investigate R-SLAOpt's impact on system performance and the gains made in reliability. / Graduate

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The diploma thesis deals with the proposal of the timbered buildings. In the proposal of log house is used glued massive profiles in order to meet the requirements for thermal protection of buildings. The massive composition is complemented by layer of heat insulation. In the first part of diploma thesis is devoted to the problems of solid wood house and the general information on the thermal properties of buildings. In the practical part of this thesis variants of peripheral walls are designed and these walls are compared according to preselected criteria between each other. The selected wall is processed by the drawing documentation and calculation of the energy performance of the building is done in the program ENERGY.

<p> This dissertation explores the nature and incidence of several non-standard work arrangements (NSWAs). Statistics confirm the growing prevalence of NSWAs. By 1995, less than one third of Canadian workers were employed in a single full-time, permanent job with a "normal" work schedule. Conventional wisdom suggests that the net effect of the increasing incidence of NSWAs is negative for workers. However, certain NSWAs potentially provide better work-life balance for employees and more flexible utilization of labour for employers. Thus, it is suggested that far too little attention has been paid to the varying nature of particular NSWAs. A typology of NSWAs, consisting of five dimensions and three types, is conceptualized. After examining the dataset and some preliminary data analysis, a modified typology of four dimensions and two types is presented and analyzed. In particular, the two key types of NSWAs are categorized as employee-friendly or employer-friendly. In addition to the typology, the workplace and worker characteristics that affect the incidence of NSWAs is examined.</p> <p> This dissertation has a quantitative research design, and utilizes Statistics Canada's 1999 Workplace and Employee Survey (WES). The chosen dataset and methodology also allow inferences to be made regarding employer strategies. Results suggest that job satisfaction is positively related to employee-friendly NSWAs but negatively related to employer-friendly NSWAs. When controlling for a range of worker and workplace variables, it was found that industry, occupation, gender, tenure, and employee participation are related to the incidence of NSWAs. Finally, consistent with existing research, only a tenuous link was found between workplace outcomes and the incidence of NSWAs. The implication is that the implementation of NSWAs is affected more by employers' strategic choices rather than economic necessity.</p> / Thesis / Doctor of Philosophy (PhD)