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Teses / dissertações sobre o tema "Farms"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de julho de 2025

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1

Dunaway, Tarrah M. "Farm Financial Performance of Kentucky Farms." UKnowledge, 2013. http://uknowledge.uky.edu/agecon_etds/13.

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This study examines farm financial performance of Kentucky farms using Kentucky Farm Business Management data from 1998-2010. Logit models are used to estimate the likelihood of farm characteristics affecting whether financial ratios fall into critical zones or not. The results show that large farms in terms of total gross returns and total assets are less likely to experience repayment capacity problems. Total gross returns significantly affect all five financial measures. These findings will help farmers and lenders understand what factors influence farm financial performance. Profitability

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2

Xu, Qing Yun. "The competitiveness of Ontario dairy farms : a farm level analysis." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116061.

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The Canadian supply managed dairy sector is likely to face more competitive pressure from challenges through the World Trade Organization (WTO) and the changing global trade environment. Therefore, it is highly prudent for Canadian dairy producers to focus their concern on their level of competitiveness and how to improve it. This study investigated the competitiveness of Ontario dairy sector based on a sample of farm level data with a Box-Cox transformed econometric cost model. The data were gathered by the Ontario Dairy Farm Accounting Project, for the years 2005, 2006, and 2007. The impacts

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3

BELLINGERI, ANDREA. "WHOLE FARM DECISION MAKING AND TOOLS FOR DAIRY FARMS PROFITABILITY." Doctoral thesis, Università Cattolica del Sacro Cuore, 2020. http://hdl.handle.net/10280/72496.

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Nel tentativo di rispondere alle richieste della società per lo sviluppo sostenibile, i sistemi agricoli di tutto il mondo devono affrontare sfide ambientali, tecniche ed economiche. I raccolti irregolari, i prezzi fluttuanti delle materie prime e l'impatto delle attività agricole sull'ambiente sono preoccupazioni crescenti. Le tendenze demografiche effettive e i maggiori costi energetici potrebbero complicare ulteriormente lo scenario nel prossimo futuro. La ricerca sta affrontando queste sfide lavorando su sistemi di allevamento e zootecnia più sostenibili e rispettosi dell'ambiente in grado

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4

Mai, Chi Le Phuong Hartarska Valentina M. "Farm investment and off-farm income h [electronic resource] : a study of farms in Alabama /." Auburn, Ala., 2006. http://repo.lib.auburn.edu/Send%206-15-07/MAI_CHI_44.pdf.

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5

Vaddella, Venkata Kumar. "Ammonia emissions management and modeling from storages of dairy manure." Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Dissertations/Spring2010/V_Vaddella_1030810.pdf.

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6

Heenan, Deirdre Anne. "The role and contribution of farm wives on farms in Northern Ireland." Thesis, University of Ulster, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242144.

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7

Bannon, Brian. "Engaging existing conditions with new conditions a farm equipment museum amidst an abandoned dairy farm /." This title; PDF viewer required Home page for entire collection, 2008. http://archives.udmercy.edu:8080/dspace/handle/10429/9.

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8

Chaplin, Hannah Elizabeth. "Non-agricultural diversification of corporate farms and and farm households in Central Europe." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416117.

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9

Holland, Cody. "Labor standards and efficiency estimation of farms in the Kansas Farm Management Association." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/13607.

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Master of Science<br>Department of Agricultural Economics<br>Michael Langemeier<br>The objectives of this thesis are to examine the labor requirements of Kansas crop and livestock enterprises and farms and the connection between labor efficiency and productivity, and other important farm characteristics including farm size and type. The derived labor requirements are compared to current KFMA labor requirements. Enterprise summary reports and a five year whole-farm panel data set from 1,016 Kansas Farm Management Association (KFMA) farms are used in the analysis. Whole-farm labor requirements

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10

O'Leary, Niall. "Farmer attributes associated with farm profitability : a study of dairy farms in Great Britain." Thesis, University of Reading, 2017. http://centaur.reading.ac.uk/75745/.

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How farmer attributes influence farm businesses performance and profitability is poorly understood. This thesis sets out to ascertain the farmer attributes that are associated with farm performance and profitability. For the first time from a farm management perspective, the management and job performance literature is reviewed comprehensively. A broad exploratory study focusing on farmer attitudes is reported along with a focused study on farmer personality attributes. Participants in both studies were dairy farmers in Great Britain. Linear models are presented in both studies. Just six and t

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11

Shubert, Natalie E. "No Farm, No Food: Organizing Appalachian Family Farms around the Politics of 'Good Food'." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1272911792.

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12

Li, Simeng. "WIND ARRAY PERFORMANCE EVALUATION MODEL FOR LARGE WIND FARMS AND WIND FARM LAYOUT OPTIMIZATION." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1405080318.

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13

Lutton, Susan J. "Aquatic biodiversity and the ecological value of on-farm water storages on irrigation farms." Thesis, Griffith University, 2010. http://hdl.handle.net/10072/367656.

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Globally, natural wetlands are under threat from water resource development reflecting the need to support a growing population. In the Border Rivers Catchment in Queensland, Australia, a large irrigation industry coupled with a highly variable flow regime has necessitated the building of large on-farm water storages and often associated destruction or isolation of their natural counterparts. With the decline in abundance of natural wetlands, the presence of these storages on the floodplain has raised the question of their suitability as alternative aquatic habitat. This project aimed to inves

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14

Makhura, Moraka Thomas. "Overcoming transaction costs barriers to market participation of smallholder farmers in the Northern Province of South Africa." Pretoria : [s.n.], 2001. http://upetd.up.ac.za/thesis/available/etd-09012001-131116/.

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15

Flo, Randi Aardal. "Configuration of large offshore wind farms." Thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9957.

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<p>This master thesis is written at the Department of Electric Power Engineering at the Norwegian University of Science and Technology. The work has been carried out at NTNU in Trondheim. The thesis deals with configuration of large offshore wind farms and transmission systems, and is a continuation of the project written during the autumn 2008. Today several plans on 1000 MW offshore wind farms exists. The size of the wind farms has led to a challenge of how to find an efficient and secure design of the overall system. The system has to be cost-effective in order to compete with other forms

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16

Khatab, Abdul Mouez. "Performance Analysis of Operating Wind Farms." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-331783.

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This work proposes a methodology to evaluate the performance of operating wind farms via the use of Supervisory Control and Data Acquisition System (SCADA) and modeled data. The potential annual energy is calculated per individual turbine considering underperforming/loss events to have their power output in accordance with a representative derived operational power curve. Losses/underperformance events are calculated and categorized into several groups aiming at identifying and quantify their causes. The methodology requires both anemometry data from SCADA system as well as modeled data. The d

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17

Bezerra, Rufino Ferreira Paiva Eduardo. "Wind Velocity Estimation for Wind Farms." Electronic Thesis or Diss., Université Paris sciences et lettres, 2023. http://www.theses.fr/2023UPSLM046.

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Cette thèse propose des algorithmes pour estimer la vitesse et la direction du vent pour des éoliennes et des parcs éoliens.Tout d'abord, nous proposons des méthodes basées sur les données pour estimer la vitesse effective du rotor (REWS) sans nécessiter la connaissance de certains paramètres physiques de l'éolienne, qui pourraient être inconnus de l'opérateur. Nous fournissons deux méthodes basées sur les données, l'une basée sur la régression par processus gaussien et l'autre combinant la régression par processus gaussien avec un observateur grand gain.Ensuite, en nous basant sur cette estim

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18

Demir, Ibrahim. "The firm size, farm size, and transaction costs the case of hazelnut farms in Turkey /." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1202498616/.

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19

Amornvivat, Sutapa 1974. "Impact of on-farm water storage for increasing agricultural productivity of rice farms in Thailand." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/84308.

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20

Can, Edna Maria de Andrade Vieira. "Welfare assessment in Portuguese dairy goat farms : on-farm overall feasibility of an international prototype." Master's thesis, Universidade de Lisboa. Faculdade de Medicina Veterinária, 2015. http://hdl.handle.net/10400.5/8862.

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Dissertação de Mestrado Integrado em Medicina Veterinária<br>This study describes and assesses the application of the on-farm welfare assessment prototype for dairy goats (Capra hircus) developed by the AWIN project. Thirty Portuguese dairy goat farms were assessed from January to March 2014. Pen-level observations were carried out on 2715 animals and detailed individual observations were performed on 1172 of these animals. The main areas of concern were associated with claw overgrowth, queuing at feeding, overweight animals, poor hair coat condition and improper disbudding. The results obtain

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21

Stewart, Brittany Allison. "The Impact of Feed Management Software on Whole-Farm Nutrient Balance on Virginia Dairy Farms." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/42718.

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Agricultural runoff is the largest source of nitrogen and phosphorus pollution entering the Chesapeake Bay, contributing 38% of nitrogen and 45% of phosphorus (USEPA, 2010). Since agricultural runoff is the number one contributing source of nitrogen and phosphorus entering the Chesapeake Bay, action needs to be taken to reduce nitrogen and phosphorus on agriculture production facilities, such as dairy farms. The impact of feed management software on whole-farm nutrient balance was studied on 18 dairy farms located in Virginia from 2006 to 2010. Nine farms began using the TMR Tracker feed mana

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22

Wasserfall, Michiel Nicolaas. "Rain events based hillslope hydrological processes at the Langgewens Experimental Farm, Western Cape, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80045.

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Thesis (MScAgric)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Hillslope hydrology represents a complex system with several interacting processes influencing the movement of water through the landscape. The Western Cape area of South Africa is expected to be impacted on by a change in climate and the importance of water management that will increase in the future. Climate, especially precipitation, is the driving factor behind the hydrological system and there are currently no predictions as to what the impact will be on the hydrological conditions. The main objective of the study is t

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23

Dickerson, J. Ryan. "Modified drastic model for siting confined animal feeding operations (CAFOs) in Williams County, Ohio." Bowling Green, Ohio : Bowling Green State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1178903565.

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24

MacVicker, Helen J. "The ecotoxicology of rodenticide use on farms." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/29783.

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The major findings of the study were as follows: 1. Rats ate significantly more coumatetralyl than brodifacoum, and rats in an area of physiological resistance (central southern England) ate greater quantities of rodenticide than rats in the east midlands. Coumatetralyl failed to achieve rat control on farms in central southern England. 2. Physiological resistance was suspected on two farms in the east midlands (near Lincoln) where rats ate excessive quantities of coumatetralyl and the control programme was unexpectedly extended. 3. GCMS analyses performed on extracts of 169 whole rodents reve

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25

Moeller, Sabina. "Novel farms, textual memory and spatial imagination." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/MQ36061.pdf.

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26

Shanmugam, Ramaradj. "Efficiency and productivity of Quebec dairy farms." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0007/MQ44104.pdf.

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27

Grant, Heather-Anne Ruth. "The cost competitiveness of Alberta dairy farms." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ60433.pdf.

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28

Nord, Erika. "Cost estimation of wind farms' internal grids." Thesis, KTH, Elektriska energisystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-47831.

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When establishing new wind farms there are a lot of different stakeholders that have different demands and ambitions.The local grid in a wind farm constitutes of about 10% of the total investment cost and therefore it is of importance that it is optimized both regarding losses and costs. In a wind farm project a system analysis is ordered thatsummarizes information such as cable layout, electric data and losses. A drawback is that this analysis is given in a later part of the project, when most decisions already have been made due to permits. If the analysis shows that there are unnecessarily

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29

Stulpinienė, Vaida. "Financial distress prediction model of family farms." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2013~D_20140123_133545-56537.

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Designed financial distress prediction model is intended directly for the farmer (decision-maker) in order to diagnose the farm’s financial condition and predict the likelihood of financial distress, by using financial information of his farm. There are identified family farm characteristics in which family farms have higher risks to run in financial distress and are guidelines for the family farms that intend to more carefully monitor and control their financial condition. The aim of the research: after analysing the conception of financial distress and identifying the factors determining the

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30

Shanmugam, Ramaradj. "Efficiency and productivity of Quebec dairy farms." Thesis, McGill University, 1998. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20234.

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The analysis of cost and profit efficiencies of a sample of 588 Quebec dairy farms shows significant potential to reduce costs and increase profits. In general, the small farms were more cost efficient while large farms were more profit efficient. Increased use of farm grown feed was associated with higher efficiency while increased use of concentrates was associated with lower efficiency.<br>The productivity of individual dairy farms were estimated using data envelopment analysis. The average annual growth rate of productivity was 0.70% with a standard deviation of 2.44% for the 1987--93 peri

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31

Li, Pei 1981. "Controlling hour-long power of wind farms." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112574.

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In attempting to control the power output of a wind farm, it is first necessary to smooth the power fluctuations due to wind turbulence. This is accomplished by spatial smoothing, whereby the high frequency power components of a single wind turbine generator (WTG) is reduced by a factor of N-1/2, where N is the number of WTGs in the farm. For this reason the first part of the thesis is concerned with developing a model of smoothing in a wind farm and justifying it mathematically.<br>After spatial smoothing, the wind farm output still contains low frequency fluctuations. The second part of the

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32

Hawkins, Elizabeth Anne. "Changing technologies : negotiating autonomy on Cheshire farms." Thesis, London South Bank University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281127.

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33

Eriksson, Ola. "Numerical Computations of Wakes Behind Wind Farms." Licentiate thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-255859.

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More and larger wind farms are planned offshore. As the most suitable build sites are limited wind farms will be constructed near to each other in so called wind farm clusters. Behind the wind turbines in these farms there is a disrupted flow of air called a wake that is characterized by reduced wind speed and increased turbulence. These individual turbine wakes combine to form a farm wake that can travel a long distance. In wind farm clusters farm to farm interaction will occur, i.e. the long distance wake from one wind farm will impact the wind conditions for other farms in the surrounding a

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34

Bravaccini, Giovanni. "Frequency regulation provision by wind power farms." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022.

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La tesi tratta il contributo alla regolazione della frequenza della generazione di energia elettrica da fonte eolica, che tipicamente avviene tramite parchi eolici connessi alla rete di alta tensione. Lo studio è motivato dal recente regolamento europeo sui generatori che prevede che a tali servizi di rete contribuiscano anche le fonti rinnovabili. Il contributo della generazione nei transitori di sottofrequenza richiede la presenza di una riserva di potenza, che nel caso delle fonti rinnovabili può essere realizzata attraverso sistemi di accumulo di energia oppure attraverso le due tecniche c

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35

Pearce, Austin Willis. "Moving Virginia Dairy Farms Toward Phosphorus Balance." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/99836.

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Sustainability for Virginia dairy farms requires balancing phosphorus (P) imports and exports at the farm-gate level. Balancing P helps prevent further accumulation of P in farm soils through routine applications of manure, which over time contributes to surface water quality issues. The objectives of this research centered on guiding dairy farms in Virginia toward lower, more sustainable P balance, and without adversely impacting profitability. First, the state of P balance had to be determined for a sample of dairy farms, including risk factors for excessively high P balance. Second, a repea

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36

Zwart, Maria Catharina. "Disturbance effects of wind farms on birds." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2737.

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Wind energy, like all renewable energy production, is a sustainable resource with a far lower carbon footprint than the burning of fossil fuels and consequently plays a role in mitigating climate change. There has been a rapid rise in its use over the last 15 years. However, there are concerns regarding the potential effects of wind turbines on wildlife, especially birds and bats. Potential effects include disturbance through direct or indirect habitat loss, or fatality through collision with turbine blades. First, I investigated the potential of using existing bird monitoring data collected b

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37

Mir, Ghafourian Seyed Mohammad sadegh. "Switching transients in large offshore wind farms." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/switching-transients-in-large-offshore-wind-farms(00ac9266-599e-4282-a497-b0e7dc9c1f78).html.

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This thesis deals with the analysis of switching transients in large offshore wind farms. Switching transient is of great importance in electrical power systems in general, not least in offshore wind farms. The large area required for an offshore wind farm along with its offshore location results in extensive cable systems with a large number of radial feeders and medium voltage transformers. These transmission systems are very different from traditional onshore networks. Hence, accurate transient analysis is important, as travelling wave reflections can become critical in some reflection poin

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38

Pennells, Jonathan Stephen. "Atmospheric boundary layer impacts on wind farms." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/19660/.

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Increasing demand for renewable energy sources has meant that wind power is becoming a more crucial source of energy, leading to larger wind farms. It is currently unknown whether wind farms impact the boundary layer. This thesis aims to improve our understanding of the impact from wind farms. To do this, numerical simulations are carried out in BLASIUS and WRF with an existing Wind Farm Parametrisation (WFP) being implemented in BLASIUS. Neutral boundary layer simulations are carried out in BLASIUS, with different velocities, height and capping inversion strengths. It is found that decreases

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39

Marchiori, Elisa. "Sustainability of dairy farms in mountainous areas." Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423119.

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The general aim of this thesis was to analyze the sustainability of dairy cattle farms in mountainous areas. The studies were conducted in the Eastern Italian Alps, a study area representative of the evolution of livestock systems in mountainous areas.<br>L'obiettivo generale è di questa tesi di dottorato è lo studio della sostenibilità delle aziende di bovini da latte in ambito montano. I lavori presentati sono stati condotti nelle Alpi italiane orientali, che rappresentano un modello dell’evoluzione dei sistemi di allevamento nelle aree montane.

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40

Mayson, David. "The Rural Foundation, management and change on fruit farms : a case study of selected farms in the Elgin area." Master's thesis, University of Cape Town, 1990. http://hdl.handle.net/11427/17265.

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Includes bibliography.<br>This is an exploratory study which investigates changes introduced by management on farms in Elgin and explores the perceptions of some of those involved in the changes. The initiatives and activities of the Rural Foundation for Community Development (Rural Foundation) and its involvement in these changes forms a crucial part of the exploration. Three questions direct the study. 1. What are the changes that have been introduced? 2. Why were they introduced? 3. What is the social meaning of the changes? The study is based on a case study of four farms. Documentary mate

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41

Becot, Florence Anne Stephanie. "Linking farm households’ social needs, social policy, and farm persistence to better understand and support family farms in the 21st century." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1576518795181479.

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42

Baker, Laurence Bruce Bell. "Studies of lease-buy decisions and models for forecasting land prices." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41526.

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The choice between purchasing land or entering into a long-term lease is analyzed using a deterministic cash analysis both from the tenant's and landlord's perspective. It is less financially stressful to start farming through a lease agreement than by purchasing the assets. The lease period of landlord indifference between these choices is determined for each combination of input variables.<br>Land value and income forecasting models are developed and presented. These models are based on two similar but conceptually different statistical tests. Each test results in different forecasting model

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43

Saffert, Andrew Thomas. "An economic analysis of adjusted gross Revenue-Lite insurance on farm income variability for southeast Kansas farms." Thesis, Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/308.

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44

Falletisch, Leila Ann. "Understanding the legacy of dependency and powerlessness by farm workers on wine farms in the Western Cape /." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/836.

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45

Shim, Sangyun. "Coupled dynamic analysis of floating offshore wind farms." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2564.

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46

Biggers, Earl D. Jr. "Considerations for direct tanker loading on dairy farms." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/3873.

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47

Nordvarg, Lennart. "Predictive Models and Eutrophication Effects of Fish Farms." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-4932-8/.

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48

Lopez, Andreu Monica. "Studies on the economic efficiency of Kansas farms." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/952.

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49

King, Rosemary Louise. "Electrical transmission systems for large offshore wind farms." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/54217/.

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Simulations of switching transients were carried out in EMTP-RV. Overvoltages in offshore wind farms ranged from temporary over voltages to very fast front transients. Transient Recovery Voltages of the offshore circuit breakers exceeded IEC 62271 requirements in some situations. The disconnection of an array produced the most severe overvoltages, exceeding IEC 60071 requirements.

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Plew, David Russell. "The Hydrodynamic Effects of Long-line Mussel Farms." Thesis, University of Canterbury. Civil Engineering, 2005. http://hdl.handle.net/10092/1069.

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The hydrodynamic effects of long-line mussel farms are studied through a two-pronged approach. Large-scale hydrodynamic effects are investigated through the use of field measurements, primarily at a large mussel farm in Golden Bay, New Zealand (230 long-lines, covering an area of 2.45 km by 0.65 km). The research focuses on three areas: the effect of the farm on currents, mixing and stratification, and the dissipation of wave energy. Measurements are also made of the forces on long-line anchor ropes, and a limited investigation is made of phytoplankton depletion. The second approach is the use

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