No description available.

The new concept of Multi-Level Current Reinjection (MLCR) combines the advantages of DC ripple reinjection, multi-level conversion and soft-switching technique. Taking advantage of the soft-switching technique which uses zero current switching for the main bridge switches, thyristor based MLCR current source converter (CSC) is proposed. This concept adds self-commutation capability to thyristors and produces high quality line current waveforms. Various thyristor based MLCR CSC topologies have been simulated extensively using PSCAD/EMTDC in this thesis and their performance characteristics investigated. Questions have been raised about the ability to force the main thyristors off using the reinjection bridge in a real-world implementation, where there are inevitable stray capacitances and inductances which may influence the thyristor turn-off; and simulation switching models may not represent the switching characteristics fully or accurately. For this proof of concept, a small scale prototype has been built in the laboratory. The 3-level MLCR CSC, which increases the pulse number from 12 to 24, is chosen to verify the concept. The experimental investigation of the 3-level MLCR CSC, under steady-state conditions, verified the following: • The reinjection current allows the main bridge thyristors to be switched at negative firing angles. • This current reinjection technique allows self-commutation capability in a practical system despite the finite turn-off times of the thyristor. • This current reinjection technique improves the harmonic characteristics of the thyristor based converter. • It is observed that the deviation of the actual waveforms from the theoretical waveforms is mainly due to the snubber across the reinjection switch, and a trade-off in the choice of snubber components is required.

No description available.

No description available.

No description available.

<p>Syftet med uppsatsen är att analysera Gunnar Sjöbloms modell om programrealisering utifrån ett fall, Östersjömiljardprojektet, samt att följa upp modellen med aspekten om Multi-level governance. Detta görs med hjälp av tre frågeställningar. För att uppfylla syftet har jag med hjälp av en textanalys bearbetat material hämtat från Rikslex, Riksdagens arkiv, i form av propositioner, motioner, betänkande, och protokoll. Den teoretiska utgångspunkten har tagits ifrån Gunnar Sjöbloms modell som bygger på partistrategi i ett flerpartisystem. Partiernas främsta mål är att uppnå programrealisering. För att åstadkomma detta krävs inflytande på tre arenor: väljararenan, den interna arenan och den parlamentariska arenan.Östersjömiljardprojektet var ett förslag i sysselsättningspropositionen 1995 som byggde på att en miljard kronor skulle ingå i en fond avsatt för att främja svensk export inom områdena livsmedel, energi, ömsesidigt kunskapsutbyte, stärkt infrastruktur samt samarbete för att miljöskydd runt Östersjön. De områden som ingår i projektet är nordvästra Ryssland, Estland, Lettland, Litauen samt Polen. Resultatet visar att Sjöbloms modell är hållbar för det valda fallet. För att avgöra om det är ett fall av multi-level governance krävs ytterligare forskning på vilka påtryckningar utanför den politiska arenan som var betydande för beslutet.</p>

Purpose: The purpose of this research program was three-fold. First it aimed to determine the effectiveness of smoking cessation interventions in increasing cessation rates in smokers with cerebrovascular disease and whether smoking cessation reduces stroke recurrence. Second it aimed to determine the prognostic influence of smoking and its association with stroke severity, disability, length of stay in hospital and mortality. Third it aimed to identify multi-level correlates of smoking cessation in Canadians who reported stroke symptoms in a large population based survey. Methods: Two systematic reviews and meta-analyses were performed to achieve the first objective. For the second objective, a retrospective cohort study was undertaken using variables from the Registry of the Canadian Stroke Network. Finally, the third objective was achieved by analyzing respondents from the Canadian Community Health Survey. Results: There is a paucity of intervention studies examining the effectiveness of smoking cessation in smokers with cerebrovascular disease. Most intervention studies that were found, failed to employ evidence-based approaches to smoking cessation. No evidence was found in regards to the effect of smoking cessation on stroke recurrence. We found smokers had strokes at a younger age compared to non-smokers. We found that in transient ischemic attacks and intracerbral haemorrhage, smoking was a significant predictor of stroke severity, disability, length of stay in hospital and 1 year mortality. Correlates of smoking cessation among Canadians who have experienced symptoms of a stroke included: higher education and income, implementation of household and vehicle smoking restrictions, access to a general practitioner and the use of smoking cessation pharmacotherapies and counselling support. Co-morbidities such as depression and alcohol consumption reduced the likelihood of successful cessation. Conclusions: This three-phase research program elucidated the gaps in intervention research for this population along with co-morbidities that hinder success in cessation. Smoking negatively impacted outcomes such as disability, hospital length of stay and mortality in patients with transient ischemic attacks and intracerebral haemorrhage strokes. Future interventions should take into account modifiable smoking cessation correlates in order to increase cessation rates in smokers with cerebrovascular disease.

As we know that the process of visions, strategies, plans, actions, reviews and re-plans are essential to managing a company and strategies obviously are the main guideline of all. The product strategies in marketing are recognized as the starting point to various kinds of strategies in production, marketing, human resource, R&D, finance, information system and logistic¡Ketc. The distribution organization of Multi-Level Marketing companies (hereafter named ¡§MLM companies¡¨) is different from those of other industries because in addition to being a customer, the distributors are not only their sales representatives but also supervisors of the sales teams. Therefore, the characteristics of distribution organization must be particularly taken into account while MLM companies plan on their product strategies. If they know well about the characteristics, the products strategies can be successfully initiated and company goal can be easily achieved as a result. In this study the data was collected through questionnaires which focus on the following three main issues in order to compare the differences and similarities of consideration factors between MLM companies and distributors while MLM companies plan on their product strategies.

Syftet med uppsatsen är att analysera Gunnar Sjöbloms modell om programrealisering utifrån ett fall, Östersjömiljardprojektet, samt att följa upp modellen med aspekten om Multi-level governance. Detta görs med hjälp av tre frågeställningar. För att uppfylla syftet har jag med hjälp av en textanalys bearbetat material hämtat från Rikslex, Riksdagens arkiv, i form av propositioner, motioner, betänkande, och protokoll. Den teoretiska utgångspunkten har tagits ifrån Gunnar Sjöbloms modell som bygger på partistrategi i ett flerpartisystem. Partiernas främsta mål är att uppnå programrealisering. För att åstadkomma detta krävs inflytande på tre arenor: väljararenan, den interna arenan och den parlamentariska arenan.Östersjömiljardprojektet var ett förslag i sysselsättningspropositionen 1995 som byggde på att en miljard kronor skulle ingå i en fond avsatt för att främja svensk export inom områdena livsmedel, energi, ömsesidigt kunskapsutbyte, stärkt infrastruktur samt samarbete för att miljöskydd runt Östersjön. De områden som ingår i projektet är nordvästra Ryssland, Estland, Lettland, Litauen samt Polen. Resultatet visar att Sjöbloms modell är hållbar för det valda fallet. För att avgöra om det är ett fall av multi-level governance krävs ytterligare forskning på vilka påtryckningar utanför den politiska arenan som var betydande för beslutet.

Purpose: The purpose of this research program was three-fold. First it aimed to determine the effectiveness of smoking cessation interventions in increasing cessation rates in smokers with cerebrovascular disease and whether smoking cessation reduces stroke recurrence. Second it aimed to determine the prognostic influence of smoking and its association with stroke severity, disability, length of stay in hospital and mortality. Third it aimed to identify multi-level correlates of smoking cessation in Canadians who reported stroke symptoms in a large population based survey. Methods: Two systematic reviews and meta-analyses were performed to achieve the first objective. For the second objective, a retrospective cohort study was undertaken using variables from the Registry of the Canadian Stroke Network. Finally, the third objective was achieved by analyzing respondents from the Canadian Community Health Survey. Results: There is a paucity of intervention studies examining the effectiveness of smoking cessation in smokers with cerebrovascular disease. Most intervention studies that were found, failed to employ evidence-based approaches to smoking cessation. No evidence was found in regards to the effect of smoking cessation on stroke recurrence. We found smokers had strokes at a younger age compared to non-smokers. We found that in transient ischemic attacks and intracerbral haemorrhage, smoking was a significant predictor of stroke severity, disability, length of stay in hospital and 1 year mortality. Correlates of smoking cessation among Canadians who have experienced symptoms of a stroke included: higher education and income, implementation of household and vehicle smoking restrictions, access to a general practitioner and the use of smoking cessation pharmacotherapies and counselling support. Co-morbidities such as depression and alcohol consumption reduced the likelihood of successful cessation. Conclusions: This three-phase research program elucidated the gaps in intervention research for this population along with co-morbidities that hinder success in cessation. Smoking negatively impacted outcomes such as disability, hospital length of stay and mortality in patients with transient ischemic attacks and intracerebral haemorrhage strokes. Future interventions should take into account modifiable smoking cessation correlates in order to increase cessation rates in smokers with cerebrovascular disease.