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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.
221

Designing optimal water supply systems for developing countries

Ukoli-Onodipe, Grace O. 05 September 2003 (has links)
No description available.
222

Three essays on economic valuation of consumer preferences on genetically modified foods

Kaneko, Naoya 07 October 2005 (has links)
No description available.
223

ESSAYS ON CATTLE-DERIVED FOOD PRODUCTS: DEMAND, PRICING, AND INVESTIGATION INTO LINKAGES BETWEEN ONLINE MEDIA AND FUTURE PRICES

Mario Amado Ortez Amador (13150497) 25 July 2022 (has links)
<p>  </p> <p>Cattle derived food, like beef and dairy, have long been a staple of our human diets and continue to be prominent in our days. This prominence and their relevance naturally extend to our economies. According to the U.S. Department of Agriculture, Economic Research Service (2022), cattle production is the most important agricultural industry in the US representing about 17% of the $391 billion total cash receipts for agricultural commodities in 2021.</p> <p><br></p> <p>Economists have looked into cattle derived products from a wide array of perspectives focusing on the product itself, for example beef, but also in the forces of supply and demand that at times are external to product attributes. The effect of supply and demand shocks on agricultural markets have been heavily considered in the literature (Thomsen and McKenzie, 2001; McKenzie and Thomsen, 2001; Lusk and Schroeder, 2002, Piggott and Marsh, 2004). Yet another important aspect of agricultural markets is price determination and the body of literature in this area is ample (Tomek & Robinson, 2003). Recent phenomena in the world, like the availability of information, good or bad, in the most current, voluminous and accessible way that we have ever seen, could be a new force in price determination of agricultural products. My research contributes to such strains of literature by investigating perceptions and willingness to pay for beef attributes, market shocks in beef markets, and the role of online media in dairy prices.</p> <p><br></p> <p>Beef attributes, and their relative valuation by consumers, have been studied to assist in understanding consumer demand for beef. Given the relevance of such attributes in consumer’s mind, researchers have sought to study how to profitably provide those beef attributes demanded by consumers. Addressing consumer demands for tenderness, an important attribute (Schroeder and Mark, 2000), aging beef has been proved to be a technology that improves flavor, tenderness and juiciness (Kim, Kemp & Samuelson, 2016). By using aging processes, the same cattle carcass can generate more highly valued beef products. I study the willingness to pay for aging and USDA grade in beef, to understand valuation of attributes by consumers with various demographics. </p> <p><br></p> <p>In beef markets, the heterogeneity of beef cuts in their usage, pricing and distribution channels is crucial. Supply and demand shocks can affect individual cuts in different ways (Ortez et al, 2022). With some beef cuts relying heavily on restaurant sales more than others, this offers a good opportunity to introduce a new concept in beef market analysis, namely the price relationship amongst beef cuts and its response to different market shocks. The traditional discussion around spreads in meat focus on differences in price at separate steps in the supply chain, namely farm, wholesale and retail. However, little attention has been given to the relative differences in prices of specific cuts of beef.</p> <p><br></p> <p>The potential influence of online media chatter in its sentiment and volume has largely been under appreciated in the Agricultural Economics literature. A predecessor in this area is Tonsor and Olynk (2011) who first established a connection between news activity and economic fundamentals in agriculture. The advent of the internet may have the ability to decrease information asymmetry and bridge the information gap between consumers, producers and market products. Online media listening allows for data collection efficiently and in real time (Widmar, 2019) and it may be a relevant aspect in the decision making of agricultural and food industries. Moved by this endeavor, I seek to understand if potential relationships between online media chatter sentiment and volume with futures prices in dairy products exist.</p> <p>  </p>
224

Opportunity Between the Turbines: A Willingness-to-Pay Experiment Regarding Co-Location Activities with the Coastal Virginia Offshore Wind Farm

Fluharty, Shannon Mae 13 September 2021 (has links)
With shipping routes, fisheries, conservation areas, recreation, and other maritime industries competing for space off Virginia's coastline, integrated solutions for marine areas may offer a way to limit conflict and maximize productivity. Countries across the world are researching the different ways in which the space between turbines can be utilized to provide economic and environmental benefits. The act of coupling other maritime activities with offshore wind farms is often referred to as co-location. As Virginia constructs the first offshore wind farm in United States Federal waters, there are new opportunities for co-location that could benefit the Virginia economy. Using data from a choice experiment and random utility modeling, this research quantifies Virginia public preferences for various co-location options within the lease area of the Coastal Virginia Offshore Wind (CVOW) farm. Our estimated WTP values show Virginia's public preference for the addition of co-location to the CVOW lease area to be upwards of $20 per 1,000 acres of activity. Our estimates can be compared to implementation and management costs of each activity to determine potential for incorporation of certain co-location techniques. The experimental design of this study can be applied to other offshore wind installments around the world. / Master of Science / With shipping routes, fisheries, conservation areas, recreation, and other maritime industries competing for space off Virginia's coastline, integrated solutions for marine areas may offer a way to limit conflict and maximize productivity. Countries across the world are researching the different ways in which the space between turbines can be utilized to provide economic and environmental benefits. The act of coupling other maritime activities with offshore wind farms is often referred to as co-location. As Virginia constructs the first offshore wind farm in United States federal waters, there are new opportunities for co-location that could benefit the Virginia economy. Using a Stated Preference Choice Experiment and economic valuation methods, this research quantifies Virginia's public preferences for various co-location options within the lease area of the Coastal Virginia Offshore Wind (CVOW) farm, such as: a seaweed aquaculture farm, a seaweed forest, and a research area. Our estimated WTP values show Virginia's public preference for the addition of co-location to the CVOW lease area to be upwards of $20 per 1,000 acres of activity. Our estimates can be compared to implementation and management costs of each activity to determine potential for incorporation of certain co-location techniques. The experimental design of this study can be applied to other offshore wind installments around the world.
225

Understand Willingness to Pay for Pollination and User Sense of Place Connections on the Eastern Shore

Johnson, Wesley James 02 November 2017 (has links)
The global decline of pollinators, insects and animals that assist in pollination and fertilizing plants, poses a great risk to global food supply. This study investigates if people have preferences for a program to abate decline in a region along the East Coast of the United States. A survey is used to investigate these preferences and connections to the region to understand if individual connections can explain preferences. The majority of people were found to not have preferences to help increase pollinator abundance. Additionally, measures of connection to the region were found to be insignificant in explain individual preferences. / Master of Science
226

Investigating specialty crop farmers’ preferences for contract design and attitudes towards blockchain-based smart contracts

Agyemang-Duah, Esther Mmenaa 08 August 2023 (has links) (PDF)
This study examines small and medium scale specialty crop growers’ preferences for marketing contract attributes and willingness to adopt blockchain-based smart contracts. The data used were collected using an online survey and discrete choice experiment. Findings indicate that farmers prefer higher average prices, cash, check or electronic bank payment over cryptocurrency, and immediate payment upon product delivery over delayed payment. When choosing a contract, farmers viewed traditional text-based contracts and digital platforms with automated smart contracts equivalently, on average. On average, farmers showed no preference for providing and not providing traceability lot codes to buyers, and between choosing a contract and marketing their products as usual. Although we find that some farmers prefer to provide traceability lot codes to buyers while others do not, and some farmers prefer having a contract option while others do not. These insights could be useful to buyers and specialty crop farmers seeking to contract.
227

WTP for RAS salmon by the US consumer

Wu, Isaac Ying-Nan 16 May 2024 (has links)
Marine omega-3s, EPA and DHA, have been strongly evidenced to decrease the risk of cardiovascular disease, the leading cause of death in the United States. One of the richest sources of EPA and DHA in the U.S. diet is farmed Atlantic salmon, which has shown a steady consumption growth in the past decade. The U.S. shows the most production potential for salmon produced with an emerging production method, recirculating aquaculture systems (RAS), which directly addresses the environmental challenges associated with the traditional farming method, open-net pens. Because of the higher costs associated with RAS, the salmon it produces requires a price premium, and little is known about whether U.S. consumers are willing to pay such a premium. We conduct a hypothetical choice experiment across all major regional markets of the U.S. (n = 2857) to estimate consumers' willingness-to-pay for RAS and other attributes valued by producers and consumers. Our results show that U.S. consumers are willing to pay a premium for RAS, but only after prioritizing freshness (fewer days since harvest) and U.S. production, all of which were significant to the p < .001 level. Higher omega-3 content also justified a significant premium, but byproduct recycling and stocking density did not have any real influence on purchases. We express these willingness-to-pay (WTP) estimates as percentages of a reference product priced with model estimates. These adjusted retail premiums should be paired with RAS salmon production costs to understand the economic viability of RAS and illuminate the path to EPA and DHA nutrient security in the U.S. / Master of Science / Two micronutrients found in cold-water fish, EPA and DHA, have been strongly evidenced to decrease the risk of cardiovascular disease, the leading cause of death in the United States. One of the richest sources of EPA and DHA in the U.S. diet is farmed Atlantic salmon, which has shown a steady consumption growth in the past decade. The U.S. shows the most production potential for salmon produced with an emerging production method, recirculating aquaculture systems (RAS), which directly addresses the environmental challenges associated with the traditional farming method, open-net pens. Because of the higher costs associated with RAS, the salmon it produces requires a price premium, and little is known about whether U.S. consumers are willing to pay such a premium. We conducted an experiment with U.S. consumers (n = 2857) to estimate willingness-to-pay for RAS and other attributes valued by producers and consumers. Our results show that U.S. consumers are willing to pay a premium for RAS, but only after prioritizing freshness (fewer days since harvest) and U.S. production. Higher omega-3 content also justified a significant premium, but byproduct recycling and stocking density did not have any real influence on purchase
228

Swedish Consumers’ Stated Willingness to Pay for Outerwear with an Included Repair Service

Sjögren, Linn January 2024 (has links)
The thesis explores whether Swedish consumers value outerwear sold with an included repair service with the motive of supporting the transition towards a more sustainable fashion industry. In addition, to foster sustainable consumption and production patterns which align with the United Nations Sustainable Development Goals. This study is further associated with the EU Ecodesign for Sustainable Products Regulation and the upcoming EU regulation concerning the Extended Producer Responsibility. A mixed-method approach is used for the methodological framework. Qualitative semi-structured interviews are used as a pre-study to explore attributes and levels for the main quantitative Discrete Choice Experiment survey study. The Discrete Choice Experiment method integrates with the theoretical framework through the application of the Willingness to Pay estimates. A convenient sampling method, in combination with a snowball sampling method, is applied. The findings from the survey show implications for educated young urban women, a group with significant environmental impacts due to their clothing consumption. The 129 respondents showed a stated Willingness to Pay of an additional 35.6% or 562.30 SEK for outerwear with an included repair service. The calculations are based on the average price 1579.60 SEK the respondents in the survey pay for outerwear. The findings show that longer waiting times decrease the amount of money the respondents want to pay for the service. The stated Willingness to Pay decreases to 31.1% or 491.30 SEK with one week of waiting time. The creation of new jobs and a reduction of environmental impacts in production increase the stated Willingness to Pay. The findings show that outerwear sold with an included repair service could increase the frequency of repairs, extend the user phase of outerwear, and reduce the consumption of new outerwear.
229

Management Options in the Buffer Zones of Protected Areas in the South Caucasus – Socio-economic and institutional Background and economic Preferences

Kalatas, Talin 23 July 2015 (has links)
No description available.
230

Uppskattning av betalningsviljan för Peace &amp; Love 2011

Dahlqvist, Hampus, Laham, Tarek January 2016 (has links)
I denna uppsats skattas betalningsviljan hos besökarna på Peace &amp; Love-festivalen år 2011. Med hjälp av enkätdata baserad på avslöjade och uttalade preferenser presenteras en regressionsanalys med olika oberoende variabler som karaktäriserar en festivalbesökare. Total budget är den beroende variabeln i regressionsanalysen och tolkas i uppsatsen som ekvivalent med besökarnas betalningsvilja. Analysen visar att män i genomsnitt spenderar 301 kronor mer än kvinnor, att turister i genomsnitt spenderar 1 124 kronor mer än en icke-turist samt att den genomsnittliga besökaren har en betalningsvilja på 4 183 kronor. Ett skattat konsumentöverskott har också värderats, vilket uppgick till 743 kronor per person och cirka 37 miljoner kronor totalt för de 50 000 festivalbesökarna. Uppsatsen tar inte hänsyn till de ekonomiska effekter som festivalen har på Borlänge som stad. / In this thesis the willingness to pay among the visitors of peace &amp; love-festival year 2011 is valued. With survey data based on revealed and stated preferences a regression analysis is presented with different independent variables that characterizes a festival visitor. Total budget is the dependent variable in the regression analysis and is, in this thesis, to be regarded as equivalent to visitors’ willingness to pay. The analysis shows that men in general spend 301 SEK more than women, tourists in general spend 1 124 SEK more than non-tourists and that the average visitor has a willingness to pay valued to 4 183 SEK. A consumer surplus has also been valued, which amounted to 743 SEK per visitor and around 37 million SEK in total for all 50,000 visitors. This thesis does not take into account the economic effects the festival holds on the city of Borlänge.

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