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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.
511

The Development of Bioethanol Markets under Sustainability Requirements

Pacini, Henrique January 2015 (has links)
This thesis is a theoretical and empirical examination of the developmentof bioethanol markets since 2005 when sustainability regulations forbiofuels were introduced globally. The experiences of Brazil and Sweden,and the influence of European regulations on the development ofbioethanol markets receive special attention. The work is based onprimary and secondary data sources gathered between 2009 and 2014,including interviews, field research, data from public and private sources,as well as an extensive literature review. The thesis uses case examples ofcountries that have adopted bioethanol as a transport fuel, such as Braziland Sweden.The research is structured using a bottom-up approach, and addressesthree specific angles of the complex issue of how bioethanol marketshave developed under sustainability requirements.The first part introduces an economic sustainability view of ethanol. Thecharacteristics of bioethanol fuel are presented together with conceptsand a theoretical framework for analysing biofuel sustainability. Policytools are also discussed, particularly those used to introduce fuel ethanolin the transport sector. The discussion is centred on the competitionbetween ethanol and gasoline, considering the hypothesis that consumersare sensitive to prices and tend to choose fuels based on their cost-perenergyunit. The analysis is supported by the case examples of Brazil andSweden, with special focus on the delicate balance between fueleconomies of bioethanol and gasoline systems in the face of differentways oil products are priced in those countries. Findings show thatdrivers tend to choose between bioethanol (E85/E100) or gasoline (E5-E25) depending on the relative prices between the two fuels. Theresearch results suggest that different pricing strategies for bioethanoland gasoline affect how consumers perceive the attractiveness of eachfuel. The examples of E100 in Brazil and E85 in Sweden provide insightson the elastic consumer behaviour that new markets may experience,serving to guide strategies in different contexts.The second part of this work bridges experiences in national contextswith the recent trend for biofuel sustainability regulation in internationalmarkets. Based on the hypothesis that the ethanol industry is responsiveto sustainability regulations, an examination of the development of theiiBrazilian bioethanol industry is carried out. This provides a comparisonframework drawing patterns between the industry's reaction to nationalregulations (past) and international regulations (recent). For this purpose,a comparison between the European sustainability requirements forethanol and the industry’s status quo is explored. Findings show that theEU sustainability criteria for biofuels are likely to have three effects onthe bioethanol industry: (i) compliance through incrementalimprovements in sustainability practices and certification; (ii) riskdiversification by engaging in multi-output production models; and (iii)market leakage towards less-regulated markets.The third part of the thesis brings together the first two parts. Itexamines how in a fuel competition context, the incorporation of costsrelated to sustainability certification can change the attractiveness ofhigh-bioethanol blends for consumers. The model of sustainabilityadopted by major international markets is based on regulations enforcedby mandatory certification. As biofuel market share increased, producerswere faced with costs for sustainability certification in order to obtainmarket access. While it was expected that ‘sustainably’ produced biofuelswould be rewarded with higher prices in the EU, this work found thatprice premiums for ethanol have in general been very small or inexistent,with certified fuels becoming the new norm in the market. New costsbrought into the market through sustainability certification can make itdifficult to balance between national policies heavily reliant on consumerchoice between fuels (and associated price-elasticities), and thedeployment of high blends of ethanol, such as E100 and E85.By analysing the three aspects (consumer behaviour and marketdynamics for ethanol in Brazil and Sweden, the introduction ofsustainability criteria for biofuels, and the implications of sustainabilityfor consumer choice between fuels) this work seeks to increaseunderstanding of the highly complex issue of biofuel market formationin the face of sustainability requirements. The key finding is thatsustainability certification has a cost, which needs to be orchestrated withother sectors of the economy to achieve the desired objectives. Thisthesis suggests that crucial areas of economic and environmentalsustainability have been often dealt with separately in biofuelpolicymaking, which has created weaknesses that deserve attention infuture policy efforts in order to improve biofuel systems. / <p>QC 20150401</p>
512

Out and about in the welfare state : the right to transport in everyday life for people with disabilities in Swedish, Danish and Norwegian law

Pettersson, Andreas January 2015 (has links)
The aim of this thesis is to identify how a social citizenship for people with disabilities is shaped bythe normative structures in the Swedish, Danish and Norwegian law governing their right to transportin everyday life. The thesis deals with three types of transport provided by the public to private individuals: transport services, car allowances, and cash benefits for reimbursing transport costs forpeople with disabilities. For each provision, the focus of the study is directed by the followingquestions: – Is there a rights/duties relationship between the public and the individual? Who is eligible forprovision? How does public funding impact entitlement? Who is obliged to provide? What are thelegal guarantees for entitlement? Despite objectives within Nordic law and policy that people with disabilities should be compensated for their impairments, and allowed to lead independent and autonomous lives, the results from the thesis show that the various transport provisions do not fully realize this. The legal relations between the public and those with needs for transport in their everyday lives are characterized by control, scrutiny and questioning. In order to protect the public budgets from costs, the eligibility criteria in the law are so constructed as to ensure that only certain needs for transport, and only some impairments, can meet them. The national, regional and municipal governments, and the administrative courts, subject people with disabilities to intrusive inquiries regarding personal details and other circumstances in their lives, in order to be able to judge which needs for transport are to be considered legitimate and which are not. The thesis shows that the individual rights to, especially, Swedish and Norwegian transport provisions are poorly protected against political decisions to cut funding. Local and regional self-governance isan interest that always competes with individual legal rights and make them weaker, irrespective of whether these rights can be appealed in administrative courts. The conclusion in the thesis highlights how a social citizenship is shaped in the law governing the right to transport for people with disabilities, and that this social citizenship does not reinforce independence and individual autonomy for those who are dependent on the various provisions tomeet their needs for transport in their everyday lives.
513

Investment appraisal in the public sector : Incorporating flexibility and environmental effects

Lindvall, Nils January 2015 (has links)
The public sector often invests in large projects in different sectors, such as education, health care and infrastructure. It can be argued that investment appraisal process in these projects should differ from conventional approaches due to the complex interests the public sector holds, which often implies that several aspects need to be considered. Conventional techniques may not suffice and therefore this thesis aims to investigate the applicability of real options analysis and multi-criteria analysis in a combined approach. The study is conducted in the form of a case study at publicly owned Sundsvalls Logistikpark, where options in the form of the utilization of development areas and the non-monetary aspect reduction of carbon dioxide are included in the appraisal. The model developed compares two alternative strategies where one is based upon conventional usage of the area and the other represents the environmentally friendly alternative. The results show that including the value of flexibility in the appraisal significantly raises the initial valuation, whereas the comparison of the strategies show that the results either details which strategy is preferred, if input to both strategies are available, or where the threshold for indifference lies. It is concluded that this model is applicable in terms of its ability to capture the value of flexibility and inclusion of several aspects of the decision problem. However, it is also concluded that the numerous simplifications made may lead to unreliability in the results, and the process of obtaining accurate input may time-consuming, depending on the case. The usability of the model is high in terms of its potential, but lower in terms of the knowledge-based threshold required of the user.
514

Consumers' Response to Irresponsible Corporate Behaviour : A Study of the Swedish Consumers' Attitude and Behaviour

Apell Karlsson, Jennifer, Gustafsson, Moa, Rasmusson, Rikard January 2015 (has links)
How companies in the apparel industry produce their products is receiving increasingly more attention, both in the society and marketplace, as well as by consumers. Despite the increasing amount of corporate scandals and corporate irresponsibility within the apparel industry, the previous research conducted within this field has mainly focused on how positive CSR affects consumers. This thesis aims to investigate how Swedish consumers’ attitude and behaviour are affected by negative CSR in the apparel industry. In order to fulfil the purpose of this thesis, a mix of quantitative and qualitative research was used to conduct an abductive study. The data was gathered through a survey posted on social media and by performing semi-structured interviews with participants consisting of Swedish consumers. The authors of this thesis have identified that Swedish consumer’s attitude is affected by negative CSR performed by apparel companies. However, the change in consumer attitude did not necessarily transfer into a change in behaviour, which generates an attitude-behaviour gap. The key barriers identified contributing to this gap are Swedish consumers’ lack of knowledge, and that they generally value personal needs and wants such as price, quality, and style greater than social responsibility.
515

Critical analysis of sustainable community planning and development principles as applied within the Tlokwe Municipality / Bernice Bernadette van Schalkwyk.

Van Schalkwyk, Bernice Bernadette January 2012 (has links)
Due to the current high levels of urbanisation and the lingering effects of Apartheid, South African municipalities have experienced difficulties in planning for sustainability and more specifically sustainable community development. Sustainable community development is needed in order to achieve more integrated and sustainable towns and cities with an improved urban environment and a higher quality of life. Due to this sustainable community development is of particular relevance to South Africa. Although policies and legislation exist at international, national and local level, there is a lack of suitable planning instruments to guide sustainable community development. Tlokwe Local Municipality is researched as study area to test and develop planning instruments for sustainable community development. An assessment matrix of sustainability indicators is linked to Multi-criteria analysis (MCA) and applied to identify the themes and sub-themes applicable to sustainability in which intervention is required to improve the sustainability rating of the municipality. A Goal Assessment Matrix (GAM) approach is used to score and prioritise municipal projects, plans and strategies according to sustainable community development fundamentals. The top scoring projects are indicative of the achievement of sustainable community development goals and objectives. The result of the sustainability assessment is that the Tlokwe Local Municipality is considered to be relatively sustainable, performing overall better than the three spheres of government against which it was measured. Subsequent to the GAM assessment a lack of alignment between the sectoral plans was identified as well as the duplication of projects. The projects, plans and strategies of the municipality are found to not have been formulated with sustainable community development framework as a guiding goal. It is recommended that municipalities use the assessment matrix methods to determine its level of sustainability when developing respective sectoral plans (SDFs, ITPs, EMFs and IDPs). Areas in which there is a lack of sustainability are highlighted and can consequently be addressed through intervention strategies. Prioritising municipal projects, plans and strategies through the use of GAM identifies crucial projects that need special attention to ensure their successful implementation as this will largely aid sustainable community development. Both the assessment matrix method and the GAM approach are valuable planning instruments with which to achieve sustainable community development. / Thesis (MArt et Scien (Urban and Regional Planning))--North-West University, Potchefstroom Campus, 2013
516

Development of a new pole-slip protection function for synchronous machines / Lafras Lamont

Lamont, Lafras January 2011 (has links)
The rotor shaft of a synchronous machine can experience severe mechanical stress due to torque pulsations during a pole-slip condition. All pole-slip protection relays currently on the market use the impedance pole-slip protection method to detect a pole-slip. No commercial relay currently available can predict accurately when a generator is about to experience a damaging pole-slip. All the relays will only trip a generator after it has pole-slipped one or more times. Severe mechanical damage could be caused to a machine after only one pole-slip. It is therefore essential to enhance pole-slip protection relays to such an extent that it can trip a generator before it pole slips. The proposed pole-slip protection function must predict when a generator will become unstable during a network fault. As soon as instability is predicted, the generator must be tripped before the fault is cleared to avoid damaging post-fault torque effects. Conventional impedance pole-slip protection methods are are also discussed and the shortcomings of impedance pole-slip protection are investigated. The new pole-slip protection function was designed by using PSCAD. Detailed PSCAD simulations on different network configurations proved that the new pole-slip protection function will trip a generator before a damaging pole-slip occurs. The new pole-slip protection function was also implemented on an ABB REM543 multifunctional protection relay and tested on a RTDS. The concept of the new pole-slip function was successfully demonstrated on the protection relay. The operation of conventional impedance scheme relays was compared with the proposed pole-slip function for different fault conditions. Although the new pole-slip protection function is more complex than the existing impedance functions, it was concluded that similar skills are required to test and commission the new protection function. The new pole-slip function outperforms the impedance protection methods, since the new protection function can trip the generator before it pole-slips. / PhD (Electrical Engineering), North-West University, Potchefstroom Campus, 2011
517

Critical analysis of sustainable community planning and development principles as applied within the Tlokwe Municipality / Bernice Bernadette van Schalkwyk.

Van Schalkwyk, Bernice Bernadette January 2012 (has links)
Due to the current high levels of urbanisation and the lingering effects of Apartheid, South African municipalities have experienced difficulties in planning for sustainability and more specifically sustainable community development. Sustainable community development is needed in order to achieve more integrated and sustainable towns and cities with an improved urban environment and a higher quality of life. Due to this sustainable community development is of particular relevance to South Africa. Although policies and legislation exist at international, national and local level, there is a lack of suitable planning instruments to guide sustainable community development. Tlokwe Local Municipality is researched as study area to test and develop planning instruments for sustainable community development. An assessment matrix of sustainability indicators is linked to Multi-criteria analysis (MCA) and applied to identify the themes and sub-themes applicable to sustainability in which intervention is required to improve the sustainability rating of the municipality. A Goal Assessment Matrix (GAM) approach is used to score and prioritise municipal projects, plans and strategies according to sustainable community development fundamentals. The top scoring projects are indicative of the achievement of sustainable community development goals and objectives. The result of the sustainability assessment is that the Tlokwe Local Municipality is considered to be relatively sustainable, performing overall better than the three spheres of government against which it was measured. Subsequent to the GAM assessment a lack of alignment between the sectoral plans was identified as well as the duplication of projects. The projects, plans and strategies of the municipality are found to not have been formulated with sustainable community development framework as a guiding goal. It is recommended that municipalities use the assessment matrix methods to determine its level of sustainability when developing respective sectoral plans (SDFs, ITPs, EMFs and IDPs). Areas in which there is a lack of sustainability are highlighted and can consequently be addressed through intervention strategies. Prioritising municipal projects, plans and strategies through the use of GAM identifies crucial projects that need special attention to ensure their successful implementation as this will largely aid sustainable community development. Both the assessment matrix method and the GAM approach are valuable planning instruments with which to achieve sustainable community development. / Thesis (MArt et Scien (Urban and Regional Planning))--North-West University, Potchefstroom Campus, 2013
518

Development of a new pole-slip protection function for synchronous machines / Lafras Lamont

Lamont, Lafras January 2011 (has links)
The rotor shaft of a synchronous machine can experience severe mechanical stress due to torque pulsations during a pole-slip condition. All pole-slip protection relays currently on the market use the impedance pole-slip protection method to detect a pole-slip. No commercial relay currently available can predict accurately when a generator is about to experience a damaging pole-slip. All the relays will only trip a generator after it has pole-slipped one or more times. Severe mechanical damage could be caused to a machine after only one pole-slip. It is therefore essential to enhance pole-slip protection relays to such an extent that it can trip a generator before it pole slips. The proposed pole-slip protection function must predict when a generator will become unstable during a network fault. As soon as instability is predicted, the generator must be tripped before the fault is cleared to avoid damaging post-fault torque effects. Conventional impedance pole-slip protection methods are are also discussed and the shortcomings of impedance pole-slip protection are investigated. The new pole-slip protection function was designed by using PSCAD. Detailed PSCAD simulations on different network configurations proved that the new pole-slip protection function will trip a generator before a damaging pole-slip occurs. The new pole-slip protection function was also implemented on an ABB REM543 multifunctional protection relay and tested on a RTDS. The concept of the new pole-slip function was successfully demonstrated on the protection relay. The operation of conventional impedance scheme relays was compared with the proposed pole-slip function for different fault conditions. Although the new pole-slip protection function is more complex than the existing impedance functions, it was concluded that similar skills are required to test and commission the new protection function. The new pole-slip function outperforms the impedance protection methods, since the new protection function can trip the generator before it pole-slips. / PhD (Electrical Engineering), North-West University, Potchefstroom Campus, 2011
519

Swedish Arms Export : An Evaluation from an Ethical and Human Rights Point of View

Landtblom, Nina January 2014 (has links)
As an arms-exporting state, Sweden has certain legal responsibilities to ensure that licences authorizing arms exports are in line with existing laws, policies and guidelines. Apart from that, the government has an ethical responsibility to ensure that arms are not exported to countries where they are used to oppress the population and commit human rights abuses. Despite this, questionable and unethical deals are authorized without any accountability being demanded. The main purpose of the essay is to perform a critical ethical analysis of the Swedish arms trade policy, to develop the application of policies in relation to arms trade, and to suggest additional criteria to make this trade more ethically justifiable. Among other things, it is asked whether different goals and principles come into conflict, and if they do, does the “right” goal or principle win? Also, which criteria are necessary to make arms trade ethically justifiable? The essay outlines some additional criteria which could be useful in making the trade ethically justifiable and performs a text analysis on selected documents relating to the arms trade in order to delineate where the inherent issues lie. The conclusion reached is that the different policies, mostly, harmonize, although security and human rights concerns sometimes conflict, which leads to potential serious outcomes. The existing legal and policy framework provides for a robust foundation, although inadequate as contentious arms exports are authorized. However, the imposition of the suggested criteria, especially criteria pertaining to establishing responsibility and accountability in the existing structures, should prove useful. / Sverige har, som en vapenexporterande stat, en laglig förpliktelse att säkerställa att licenser som godkänner vapenexporter är i linje med existerande lag, policy och riktlinjer. Utöver det har regeringen ett etiskt ansvar att säkerställa att vapen inte exporteras till länder där de används för att förtrycka invånarna och begå människorättsbrott. Trots detta auktoriseras tvivelaktiga och oetiska exporter utan att någon hålls ansvarig. Huvudsyftet med uppsatsen är att utföra en kritisk etisk analys på svensk vapenexportpolicy, att utveckla tillämpningen av policy i relation till vapenexporten och att föreslå ytterligare kriterier för att säkerställa att exporten blir mer etisk berättigad. Bland annat ställs frågan om olika mål/principer kommer i konflikt med varandra, och om de gör det, vinner det ”rätta” målet/principen? Vilka kriterier är nödvändiga för att göra vapenexporten etiskt berättigad? Uppsatsen föreslår några ytterligare kriterier som kan tänkas vara användbara i strävandet att göra exporten mer etisk berättigad och utför en textgranskning samt analys på utvalda dokument som har ett samband med exporten för att utröna vari konflikter förekommer. Den nådda slutsatsen är att de olika policyerna, för det mesta, harmoniserar med varandra, dock föreligger det ibland en konflikt mellan mänskliga rättigheter och säkerhetsintressen, en konflikt som kan få potentiellt allvarliga konsekvenser. De existerande lagarna och policy tillhandahåller en robust grund, dock är den otillräcklig då problematiska exporter fortfarande förekommer. Dock skulle införandet av de föreslagna kriterierna, framförallt kriterierna som handlar om att etablera ansvar och ansvarskrävande i de existerande strukturerna, vara användbara.
520

Die dekking van MIV/vigs in die Sunday Times, Rapport en Sunday Sun : 'n etiese beoordeling / T. Swanepoel

Swanepoel, Thalyta January 2005 (has links)
The media has an important role to play in providing information to form the perceptions of media users on HIV/Aids. Furthermore, the media has an agenda setting function through which it determines what news consumers think about, and how they think about these topics they are presented with. Extensive media coverage has been given to the subject of HIV/Aids since the start of the pandemic. The nature of the coverage has, however, been widely criticised, mainly by interest groups actively involved in the fight against the disease. Few formal guidelines exist to guide journalists in this field. Moreover, the existing guidelines that originated mainly from the gaps interest groups identified in the coverage on HIV/Aids, are fairly fragmented. Many newspapers follow the general guidelines set by the media industry for ethical news reporting. These guidelines, such as the ethical code of the Press Ombudsman, are a result of self regulation, which is intrinsic to the social responsibility model that is seen as ideal for South Africa. There are several existing codes offering guidance regarding professional standards and general conduct. Only one - that of the now inactive South African Union of Journalists - includes criteria on HIV/Aids reporting. Through formulating guidelines, interest groups have an agenda setting function and a subsequent potential influence on the media and the public agenda. This paper endeavours to analyse and systematically summarise criteria set by the interest groups for ethically acceptable and accountable HIV/Aids reporting against the background of the agenda setting theory and the social responsibility model. In addition, HIV/Aids reporting in three Sunday papers (the Sunday Times, Sunday Sun and Rapport) is verified against these interest group criteria to ascertain how it measures up, and to determine whether a separate interest group code of ethics is desirable. It was found that the Sunday Times views HIV/Aids as a news priority, while the topic does not feature very high on the agenda of the other two papers. The analysis of news items created the impression that journalists have a basic knowledge of HIV/Aids. However, there is little evidence of deeper insight into the potential impact the media could have on the public's perception of the epidemic. Existing ethics codes compare well to interest group guidelines where general professional standards and ethical aspects are concerned. The interest group guidelines, however, focus on specific problems associated with the epidemic, such as stigma and a tendency to focus on the negative. It is within this applied context that such criteria could be useful. / Thesis (M.A. (Communication Studies))--North-West University, Potchefstroom Campus, 2005.

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