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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.
21

Changing role of hill farming in Scotland

Morgan-Davies, Claire Raymonde January 2014 (has links)
Hill farming systems in Scotland are the result of long evolution and adaptation to financial, social and political changes. Farming in the hills is a major contributor to rural industry and plays an important role in the economy, environment and social cohesion of these areas. However, it is fragile and has been dependent for many decades on high and continued levels of support payments. Agricultural land managers in these hill areas are also under increasing pressure from the other land use groups whose interests lie outside farming. With recent agricultural reforms, shifts in policy orientations regarding land use and changes in support, the future role of hill farming remains uncertain. This thesis sets out to examine the role of hill farming in this context of change, by investigating how hill farmers respond to changing policy, by understanding what other interested stakeholders expect from the hills, and exploring how hill farmers may have to adapt their farming system in response to these changes and expectations. Using an adaptive conjoint analysis method, stakeholders’ expectations have been assessed. Multivariate analysis and participative research with hill farmers have also been carried out, to typify their management responses to policy changes, using the 2003 CAP reform as an example. Stakeholders’ expectations and farmers’ types were then used in a linear programming optimisation model, to explore how hill farmers can maximise their financial margins under different policy and market change scenarios, and how their motivation is a drive towards adaptation. The results suggest that whilst livestock production is identified by stakeholders as one of the most important features for the hill areas, the continuity of livestock farming in the hills is threatened, as hill farmers are strongly affected by policy and market changes. This research also shows that there is a strong diversity in hill farming systems and in hill farmers’ management styles and motivations. That, perhaps, is one of the most important factors to acknowledge when formulating policies. This research also highlights the vulnerability of hill farming businesses (especially hill cattle production) to market price volatility, policy, subsidies and support changes, making it difficult for any hill farmer to withstand these fluctuations. Although different land uses, such as planting forestry, potentially bring substantial economic benefits, they are dependent upon many other restricting factors, including government grants, and require long-term commitment before benefits are seen. Integration of different land uses and productions could be one economic option for these areas, but a set of measures, perhaps including livestock-linked subsidies that recognise the diversity of hill farmers is needed, as well as options for hill farmers to be able to provide other public goods. Unless there is stability in market prices, a policy drive towards increasing efficiency, adequate subsidies and support and more readily attractive diversification options, including the provision of other ecosystem services linked to these grassland systems, this thesis suggests that there is a danger of hill land abandonment, a further decrease in hill farming activity, leading eventually to a decline in rural areas, not unlike many other marginal hill and mountain areas in the UK and Europe.
22

The Strength of Strong Ties in an Emerging Industry: Experimental Evidence of the Effects of Status Hierarchies and Personal Ties in Venture Capitalist Decision Making

Wuebker, Robert, Hampl, Nina, Wüstenhagen, Rolf 06 1900 (has links) (PDF)
Drawing from social network theory, scholars have identified two ways in which social ties influence venture capital investment decisions: directly through personal ties and indirectly through status hierarchies. Previous research has examined these effects independently. Our study is the first to perform a joint examination of the role of social ties and status hierarchies in venture capital decision making. We examine the relative importance of these two mechanisms through an adaptive choice-based conjoint experiment comprising of 3,132 investment decisions made by 86 venture capitalists from the United States and Europe. Our experimental context allows us to explore whether, under high levels of market uncertainty, strong personal ties exert more influence over investment decisions than the presence of a high-status investor in the deal. We also explore the moderating effects that market structure and experience play in shaping these decision processes. Our findings reveal that personal ties are more important in venture capital decision making when compared to the relative status of other venture capital firms participating in the investment syndicate. Building on our main findings, we show that the influence of personal ties is less pronounced in the European investment community, as compared to more densely networked U.S. investors. We also find a U-shaped relationship between venture capitalist experience and the influence of personal networks on investment decisions. (authors' abstract)
23

Farmer Adoption of Best Management Practices Using Incentivized Conservation Programs

Miller, Jennifer Christine 01 January 2014 (has links)
Many farms in the United States impose negative externalities on society. Population growth and the accompanying increase in demand for food further promote this trend of environmental degradation as a by-product of food production. The USDA's Environmental Quality Incentives Program (EQIP) provides financial assistance to farmers who wish to address natural resource concerns by making structural improvements or implementing best management practices (BMPs) on their farms. Regional examinations of program implementation and incentive levels are needed to evaluate the effectiveness of EQIP at both the farm and environmental level. This research addresses this need in the following two ways. First, conjoint analysis was used to calculate the willingness to accept incentive levels desired by Vermont farmers for implementing three common BMPs and the relative importance of each attribute in their adoption decisions. Next, a survey was conducted to document Vermont farmers' experiences, or choices not to engage, with EQIP. The results of the conjoint analysis indicated that farmers' adoption decisions are most heavily influenced by the available implementation incentives and that the higher the incentive level offered, the more willing farmers are to adopt a practice. The survey results triangulated these findings as cost was the most frequently cited challenge farmers face when implementing BMPs and one third of respondents felt the cost-share amount they had received was inadequate. Although 46% of respondents reported receiving nonmonetary benefits, 43% had encountered challenges when enrolling or participating in EQIP. In addition, though contracts are designed to address specific resource concerns, 30% of respondents had not fully fixed the original issues with their contracts. This also indicates that the incentive levels offered in EQIP contracts may be lower than Vermont farmers' preferred incentive levels, affecting the adoption rate of BMPs and subsequently the environmental health and long term sustainability of Vermont's agricultural systems. Program areas ripe for improvement, key points for farmers weighing the costs and benefits of program participation, and future research opportunities are discussed in order to guide efforts to improve the effectiveness of EQIP in Vermont. This research also raises awareness of how much it costs to simultaneously support environmental health and food production in our current food system and who ultimately should bear this financial burden.
24

The role of open spaces in the future of depopulated urban environments

Domingues, Maria Francisca Machado Lima January 2016 (has links)
The number of citizens living in urban areas worldwide is predicted to increase in future decades. However, this projected increase is mainly due to the magnetic power of so-called megacities. Worldwide, many intermediate cities, especially in the most developed countries, have had considerable population losses in the past decades and this trend is expected to continue. When a city loses a high percentage of its population within a short period of time, the traces of that loss become strongly apparent. Abandonment is followed by dereliction, such that the urban fabric can become randomly punctuated with uninhabited spaces where previously present human constructions have been destroyed, and social instability can ensue. The attraction of the city to newcomers then becomes increasingly compromised, and the cycle of decline is harder to overcome. Some cities have developed strategies to redress the situation, such as restricting urban sprawl, demolitions, urban agriculture, rightsizing infrastructure or permitting biodiversity sanctuaries. However, few academic studies have focused on the ways that residents, and potential newcomers, perceive this situation and react to it. Obtaining a deeper understanding of residents¹ perceptions might allow the development of targeted strategies to promote healthier, more attractive and safer environments for these communities, as well as enhancing their potential for newcomers. The research aim, therefore, is to understand the key factors that determine the attractiveness of these urban abandoned spaces for different stakeholder groups, namely, residents of depopulating, and growing, neighbourhoods, and house searchers. Three different methods were used sequentially to explore this quest: interviews with experts, focus groups and conjoint analysis. Conjoint analysis is one of the most robust methods to explore people¹s preferences, by presenting respondents with possible future change scenarios. The study was undertaken in Lisbon (PT) and Genoa (IT), two southern European cities that have experienced population decline, in some areas, in the last three decades. The results of the interviews and focus groups, for both cities, show that while people are naturally resilient to de-densification scenarios, one key concern, when discussing their neighbourhoods in this context, is related to community support. The results from the conjoint analysis corroborate the importance of having a close community for people living in depopulating environments, namely, in Lisbon. The results also show that good quality green spaces are an attraction factor for house searchers. These differences show how the provision of social support in depopulating urban environments might be a determining factor in the stabilization of these neighbourhoods and also, how the presence of good quality green spaces might enhance its attractiveness to newcomers. Social support, therefore, should be given serious consideration in any political, social, architectural intervention within depopulating contexts. Moreover, the presence of green spaces of better quality might be not only a key factor in attracting new residents, but simultaneously, play a crucial role in enhancing the physical and mental health of particularly vulnerable communities, and enhance social interaction.
25

Consumers' Willingness to Pay for Energy Labels on Household Appliances

Ward, David O. 01 May 2010 (has links)
Voluntary environmental labeling or certification programs provide information about the environmental characteristics of one or more aspects of a product’s life cycle to consumers. The U.S. Environmental Protection Agency and Department of Energy were among the first governmental agencies in the world to adopt environmental information programs. This study examines two U.S. programs – Energy Star, an energy efficiency labeling program, and Green Power Partnership (GPP), a green energy purchasing program, and estimates how much consumers are willing to pay for refrigerators that have been awarded these labels and what factors motivate that willingness to pay. The data were obtained from a survey conducted in March and April of 2009 via an online research panel, which was constructed to be representative of the U.S. population. Analysis of the data was conducted using conditional logit regression models with fixed parameters and mixed logit regression models with random parameters. Results revealed that consumers, on average, have a willingness to pay ranging from $237.81 to $350.54 for the Energy Star label and a willingness to pay ranging from $48.52 to $70.95 for the GPP label. The results also indicate that consumer demographics and attitudes influence WTP. In particular, individuals with greater levels of stated concern for the environment or individuals exhibiting strong perceptions on the effectiveness of consumers to affect product design and the ambient environment had a greater likelihood of choosing a labeled alternative, and thus, a greater WTP for both the Energy Star and GPP label. To manufacturers and government regulators, these results suggest that energy labels can play a significant role in a consumer’s decision making process when selecting a new appliance.
26

Optimal experimental designs for hyperparameter estimation in hierarchical linear models

Liu, Qing, January 2006 (has links)
Thesis (Ph. D.)--Ohio State University, 2006. / Title from first page of PDF file. Includes bibliographical references (p. 98-101).
27

Celebrity Endorsement : Hidden factors to success

Saouma, Joulyana, Chabo, Dimed January 2005 (has links)
Abstract The use of celebrity endorsement strategy is nowadays more frequently used by marketers in order to increase their sales and thereby extend their market shares. Many celebrities are used in various marketing campaigns and in most cases; the use of celebrities as endorsers is seen from mainly positive aspects. This made the authors curious whether the negative aspects, that also exists when using celebrities as endorsers, affects consumers in their purchasing decisions when a celebrity gets associated with negative publicity. Another cause of interest is which factors of a certain celebrity are most important and crucial in consumers’ perceptions, in the case of negative publicity. Purpose: The purpose of this thesis is to study which factors consumers find important for a company to consider when a celebrity gets negative publicity, to maintain successful brand recognition. Literature review: The use of previous studies within the field of celebrity endorsement clarifies many important aspects when it comes to celebrity endorsement and this chapter is elaborated from 4 different perspectives; Company, Celebrity, Brand and Consumer. Based on previous studies, the authors identified 6 crucial attributes when using celebrities as endorsers and this can also be seen as a pre-study that the research process has been based upon. Furthermore, the 6 attributes are chosen from the three first mentioned perspectives in order to be able to fulfil the purpose. Hence, this thesis is conducted from a consumer’s point of view. Method: A quantitative method is used in this thesis since the authors want to base the results on collected data that is expressed in numbers and also to generate a general apprehension in this phenomenon. Moreover, the combinations containing the 6 attributes are used in the conjoint experiment. Conclusions: It was proven in this study that consumers do get affected by celebrities as endorser, when the attributes from the literature review are in a combination. But, the consumers’ perception of the attributes differs in different cases. However, the main finding was that there are two crucial attributes, trustworthiness and expertise that companies should take into account when using celebrities in their advertising campaign.
28

Purchasíng of environmental friendly computers : How consumers value green characteristics based on a conjoint analysis

Persson, Stefan, Dilek, Ümit, Dahl, Frida January 2008 (has links)
Problem: Environmental awareness was rated as the most current trend in 2006 by the readers of Swedish newspaper DN (Olausson, 2007), and in 2005 97 per cent of the Swed-ish population thought that environmental issues will have or already have had an influence on Sweden (Swedish Environmental Protection Agency, 2005). Higher awareness about environmental issues leads to more environmental friendly products and new processes by companies for lower consumption of energy and harmful materials. However, the impor-tance of the contribution of households and electronics on the environment seems to be underestimated. Therefore, it is of importance to understand how consumers consider the environmental friendliness of electronic products, and computers in specific for this thesis. Purpose: The purpose of this thesis is to examine how consumers value environmental friendliness when buying computers and how this influences their purchase decision. Method: In order to achieve the purpose stated, a conjoint analysis was first made through an experiment in order to see how the consumer make trade-offs between certain attributes of computers. After the experiment, respondents were asked to answer a questionnaire which has been used to connect computer purchasing and environmental values to con-sumer behaviour theories. Conclusions: The assumption on environmental friendliness being the least valued attrib-ute by consumers has not been supported by the results of the conjoint analysis done; in fact it has instead portrayed environmental friendliness as the second most important, be-fore price and performance, only after accessories. The results have also shown that envi-ronmental friendliness was appreciated in a computer, and that its existence in a computer affects the purchase decision positively. The results of the post-experiment questionnaire have illustrated that environmental friendliness of computers has a strong effect on the purchase decision when combined with other attributes, although it may not be regarded of high value by itself. While a computer by it self are likely to satisfy needs as low as social need, the environmental friendliness of computers appears to satisfy esteem needs. It has also been demonstrated that social factors could have strong effects on purchasing of green computers if more and better information were available. Further, moral obligations and at-titude to behaviour factors concerning green computers seem to be strong, while perceived control and subjective norms appear to be low in today’s society.
29

Conjoint Analysis Using Mixed Effect Models

Frühwirth-Schnatter, Sylvia, Otter, Thomas January 1999 (has links) (PDF)
Following the pioneering work of Allenby and Ginter (1995) and Lenk et al.(1994); we propose in Section 2 a mixed effect model allowing for fixed and random effects as possible statistical solution to the problems mentioned above. Parameter estimation using a new, efficient variant of a Markov Chain Monte Carlo method will be discussed in Section 3 together with problems of model comparison techniques in the context of random effect models. Section 4 presents an application of the former to a brand-price trade-off study from the Austrian mineral water market. (author's abstract) / Series: Forschungsberichte / Institut für Statistik
30

Investigating the efficacy of voluntary initiatives for reducing horticultural introductions of invasive species

Crochetiere, Heather January 2012 (has links)
The horticultural industry is responsible for approximately half of the invasive plant introductions in North America. To reduce these introductions, voluntary initiatives are preferred over government regulations. This thesis aims to evaluate the effectiveness of two types of voluntary initiatives. At the gardener level, I investigated the effectiveness of alternative species promotion campaigns, called “Grow Me Instead” programs. Adult gardeners visiting the Royal Botanical Gardens in Hamilton, Ontario, as well as customers at two garden centres, participated in a conjoint analysis which measured their preferences for various traits of potential ground cover species. Results showed that gardeners generally prefer plant species having invasive characteristics, suggesting these programs may not be as effective as initially believed. At the retailer level, this study aimed to build upon the work done by Burt and colleagues (2007) to obtain further understanding of the relative strength of internal (ethical motivations) and external (legislation, stakeholder pressures and economic opportunities) factors for motivating participation in voluntary initiatives. Telephone interviews were conducted with 30 industry professionals from southern Ontario to assess their adoption of the St. Louis Voluntary Codes of Conduct. Results found that participation rates of industry professionals in southern Ontario were lower for every specific initiative than those interviewed by Burt et al. (2007). Industry professionals presently experience the most pressure to participate from a sense of personal responsibility and the desire to create a green business image. Pressure was significantly higher from these sources than from pressure from employees. Together these two studies identified several barriers to the efficacy of voluntary initiatives as well as some reasons for optimism. To ensure the success of future voluntary initiatives, efforts must be made to encourage these two groups to work together. Understanding how both retailers and gardeners respond to voluntary initiatives will assist in the development of more effective programs and lead to fewer horticultural invasive species introductions in the future.

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