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Tesi sul tema "Agricultural systems"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Kramar, Laura L. "Assessing the Sustainability of Agricultural Systems." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/KramarLL2007.pdf.

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2

Window, Marc. "Security in Precision Agriculture : Vulnerabilities and risks of agricultural systems." Thesis, Luleå tekniska universitet, Datavetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74309.

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3

Malagnino, Remo Alessio <1986&gt. "Energy Systems Optimization on Agricultural Sector." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7464/.

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Come molti altri settori produttivi, anche l'agricoltura deve affrontare una crescente dipendenza energetica da elettricità, petrolio e gas naturale. Tuttavia, l'agricoltura può rispondere direttamente a tali richieste ricorrendo alle fonti di energia rinnovabili (FER), come il solare fotovoltaico (PV) e gli impianti biogas/biometano (BP). Questi sistemi sono stati fortemente incentivati in passato. Gli attuali sistemi d’incentivazione prevedono invece sussidi commisurati alle caratteristiche aziendali come stalle, fienili, disponibilità di biomasse, ecc. Per questi motivi, per quanto riguard

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4

Allison, Helen Elizabeth. "Linked social-ecological systems: A case study of the resilience of the Western Australian agricultural region." Thesis, Allison, Helen Elizabeth (2003) Linked social-ecological systems: A case study of the resilience of the Western Australian agricultural region. PhD thesis, Murdoch University, 2003. https://researchrepository.murdoch.edu.au/id/eprint/60/.

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In the Western Australian agricultural region, an area of approximately 14 million hectares (70,000 square miles), widespread areas of native vegetation have been cleared and replaced with annual cropping systems, predominantly wheat. Only 1.3 million hectares (10%) of small and scattered native vegetation remnants remain. By 2000 16% of land in the region was at risk from soil salinity and was largely unproductive for commercial agriculture. A new hydrological equilibrium affecting 33% of the Western Australian agricultural region is predicted to be reached between 2050 and 2300. The starting

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5

Allison, Helen Elizabeth. "Linked social-ecological systems : a case study of the resilience of the Western Australian agricultural region /." Access via Murdoch University Digital Theses Project, 2003. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20040730.144640.

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6

Alhamidi, Sameer K. "New directions towards sustainability of agricultural systems /." Alnarp : Dept. of Crop Science, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/a425-ab.html.

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7

Campana, Pietro Elia. "PV water pumping systems for agricultural applications." Doctoral thesis, Mälardalens högskola, Framtidens energi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-27641.

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Grassland and farmland degradation is considered as one of the worst environmental and economic threats for China. The degradation process negatively affects food and water security, economy, society and climate changes. Photovoltaic water pumping (PVWP) technology for irrigation is an innovative and sustainable solution to curb the grassland degradation. At the same time it can promote the conservation of farmland, especially in remote areas of China. The combination of PVWP technology with water saving irrigation techniques and sustainable management of the groundwater resources can lead to

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8

Sutti, Flavio. "Importance Of Agricultural Systems As Multifunctional Landscapes." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/485.

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Agricultural landscapes provide our society with many benefits. While food production is the primary role of these landscapes, sociocultural and ecological benefits are also provided. However, the full scope of benefits that we obtain from agricultural landscapes are not always taken into account, and with the intensification of agricultural activities, more complex multifunctional landscapes are converted into simpler and less-functional landscapes. I used a heterogeneous agricultural landscape, the Champlain Valley of Vermont, as a case study to examine the interactions between landscape str

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9

Penfold, Christopher Morant. "The relative sustainability of organic, biodynamic, integrated and conventional broadacre farming systems in Southern Australia /." Title page, table of contents and abstract only, 2004. http://web4.library.adelaide.edu.au/theses/09AS/09asp3984.pdf.

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10

DuBose, Jennifer Robin. "Sustainability as an inherently contextual concept : some lessons from agricultural development." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/29567.

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11

Söderström, Douglas. "Comparing pre-trained CNN models on agricultural machines." Thesis, Umeå universitet, Institutionen för fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-185333.

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12

Lawal, Najib. "Modelling and multivariate data analysis of agricultural systems." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/modelling-and-multivariate-data-analysis-of-agricultural-systems(f6b86e69-5cff-4ffb-a696-418662ecd694).html.

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The broader research area investigated during this programme was conceived from a goal to contribute towards solving the challenge of food security in the 21st century through the reduction of crop loss and minimisation of fungicide use. This is aimed to be achieved through the introduction of an empirical approach to agricultural disease monitoring. In line with this, the SYIELD project, initiated by a consortium involving University of Manchester and Syngenta, among others, proposed a novel biosensor design that can electrochemically detect viable airborne pathogens by exploiting the biology

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13

Tungate, Kimberly Denise. "Environmental factors influencing weed interference in agricultural systems." NCSU, 2004. http://www.lib.ncsu.edu/theses/available/etd-07072004-001526/.

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In all agricultural systems using few or no herbicides, cultural and mechanical techniques are crucial to economic viability. Further advances in non-chemical weed control will require in-depth knowledge of weed biology. The objective of new strategies likely will be to alter competitive interactions between crop and weed species. An important part of weed biology, and often the basis for competitiveness, is species response to the environment. Environmental conditions differ greatly in different parts of the world. In agricultural systems, the low nitrogen status of some soils requires most c

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14

Bastien, Charlotte. "Pesticide levels in agricultural drainage systems in Quebec." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60528.

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A study was conducted to measure pesticide concentrations from two tile-drained potato fields in Saint-Leonard d'Aston, Quebec. Soil and water samples were analysed for the pesticides metribuzin, fenvalerate and aldicarb in 1989, and for metribuzin and phorate in 1990.<br>Metribuzin concentrations up to 3.47 $ mu$g/l were detected in the tile drain water. Surface runoff samples had metribuzin concentrations up to 47.086 $ mu$g/l. Aldicarb was not detected in any of the water samples. Fenvalerate was detected in surface runoff at a level of 0.05 $ mu$g/l during the 1989 growing season. Phorate

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15

Loader, Rupert John. "Investigating and assessing agricultural and food marketing systems." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259511.

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16

Lottes, Philipp [Verfasser]. "Plant Classification Systems for Agricultural Robots / Philipp Lottes." Bonn : Universitäts- und Landesbibliothek Bonn, 2021. http://d-nb.info/1230878637/34.

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17

Hartmann, Marco. "Integrated farming systems for agricultural development the case of integrated agriculture aquaculture on Palawan, Philippines." Aachen Shaker, 2008. http://d-nb.info/992686547/04.

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18

Cromwell, Jeff B. "Chaotic price dynamics of agricultural commodities." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3625.

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Thesis (Ph. D.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains vi, 166 p. : ill. Includes abstract. Includes bibliographical references (p. 142-160).

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19

Buckley, Mark C. Buckley Mark C. "The problem of restoring natural systems among social systems : strategic considerations and the Sacramento River /." Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.

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20

Rocka, Timothy Dee. "Future agricultural systems competencies of beginning Texas agricultural science teachers as determined by agricultural education professionals and administrators of agricultural education programs a Delphi study /." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969/174.

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21

Abdulhussain, Mohamed Fidahussain 1964. "Gravity bubbler irrigation systems on steep slopes converted to bench terraces." Thesis, The University of Arizona, 1994. http://hdl.handle.net/10150/278410.

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Abstract (sommario):

Gravity bubbler irrigation is a new mode of irrigation activated by the existing pressure in conventional irrigation supply channels. In gravity flow systems on steep slopes, pressure increases in the downstream sections of the pipe and must be dissipated for uniform application. A design procedure for gravity bubbler irrigation systems on inclined steep slopes or converted to bench terrace systems is described in detail. The design is based on the use of orifices as energy dissipating devices. Laboratory tests were conducted to determine graphical relationships and coefficients for estimating

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22

Mallory, Ellen B. "Crop/Livestock Integration Effects on Soil Quality, Crop Production, and Soil Nitrogen Dynamics." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/MalloryEB2007.pdf.

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23

Smith, Derik Lafayette, and Satya Prakash Dhavala. "Using big data for decisions in agricultural supply chain." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81106.

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Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 53-54).<br>Agriculture is an industry where historical and current data abound. This paper investigates the numerous data sources available in the agricultural field and analyzes them for usage in supply chain improvement. We identified certain applicable data and investigated methods of using this data to make better supply chain decisions within the agricultural chemical distribution chain. We identified

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24

Sherif, Souad Mohammed. "The economic feasibility of introducing aquaculture into traditional farming systems in Arizona." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288781.

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The primary objective of this study was to evaluate the economic feasibility of introducing fish culture into irrigated cotton production on farms in central Arizona. The representative farm adopted in this study is a cotton farm described in Arizona Field Crop Budgets, 1994-95. The only adjustment necessary for the farmer to make is to keep water in the ditches at all times. Water as a production variable for fish production was thus calculated only for the additional quantity required. Analysis of these production systems was accomplished by budgeting procedures as well as statistical analys

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25

Thompson, Iris Lee. "Agricultural Systems in Babati : Zea mays and its alternatives." Thesis, Södertörn University College, School of Life Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-2660.

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<p>This paper aims to give an understanding on the aspects that influences the choice of cropsand agricultural methods in Babati, Tanzania. Drought is a reoccurring problem in this part ofTanzania, which affects a majority of the towns’ farmers. This fact is likely to affect thechoice of crop as well as the limitations when it comes to the choices in cultivation. But thechoice itself has implications on its surrounding and can be affected by the surrounding. Tounderstand the circumstances, a wider picture will be depicted and an evaluation of thegeography of Babati and on its climate condition

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26

Erdil, Erkan. "Demand Systems For Agricultural Products In The Oecd Countries." Phd thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/12604825/index.pdf.

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The estimation of demand equations provides the earliest example of the use of statistical and econometric techniques on economic data. It is possible to identify two distinct approaches to the estimation of demand equations. The first and original approach concentrated on the demand for particular goods by paying attention to any special characteristics of the single market involved. The second approach involved simultaneous estimation of complete systems containing the demand equations for every commodity group purchased by consumers. The estimation of a complete system of demand equations i

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27

Röing, Kristina. "Soil nitrogen fluxes in Swedish and Nigerian agricultural systems /." Uppsala : Dept. of Soil Sciences, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200557.pdf.

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28

Nicholson, Fiona Annabel. "Anthropogenic influences on cadmium in agricultural soil-plant systems." Thesis, Lancaster University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309024.

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29

Velasco, Joel. "Nitrogen dynamics in integrated agricultural systems in central Mexico." Thesis, University of Plymouth, 2009. http://hdl.handle.net/10026.1/2458.

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Smallholdings (<5 ha) represent 73% of the total agricultural production systems in Mexico. Many are of low productivity, and little quantitative data has been published on the impact of traditional nitrogen (N) management practices on environmental performance at farm scale. Nitrogen is the most important nutrient for increasing crop yields. While the benefits from the use of N fertilizer are self evident, it has resulted in low efficiency of N utilization and environmental problems. This project aimed to assess N dynamics in Integrated Agricultural Systems (lASs) in central Mexico. Nitrogen

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30

Gibson, Simon. "Landscape archaeology and ancient agricultural field systems in Palestine." Thesis, University College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440425.

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31

Sheler, Rebecca Joy. "The impact of agricultural drainage systems on hydrologic responses." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2630.

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Over the past century of settlement, the landscapes of the Midwestern United States have experienced extensive anthropogenic modifications in order to convert prior wetlands-lowlands to subsequent fruitful croplands. The hydrologic responses of these landscapes have been significantly altered by the installation of artificial drainage (surface ditches and subsurface tile drains) and the change in natural preferential flow paths (increased cracks or root holes due to land use practices). Changes to peak stream flow behaviors is a result of many different inter-related variables; however, intens

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32

Salvato, M. "Performance of wetland systems in reducing agricultural nitrogen pollution." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3426572.

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The thesis is about the performance of wetland systems in reducing agricultural nitrogen pollution. It takes into account two experiments at different scale: a 3200 m2 pilot surface wetland and a mesocosm trial. In the first case the aim was to evaluate the performance of the wetland, located at the experimental farm of the University of Padova (Italy), in abating nitrogen coming from 5 ha of surrounding fields. Overall, for the entire period (2.5 years), the basin performed well in abating both nitrate and total nitrogen with a removal efficiency of about 90%. The major quantity of removed

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33

Makhwaje, Ernest N. "Strategic planning of agricultural land information systems in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/1113.

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Thesis (PhD(Agric) (Agricultural Economics))--Stellenbosch University, 2008.<br>The planning processes involved in the design and development of strategic land information systems in a semantic context require a logical approach. An array of efficacy problems associated with the relevance of the information required and the data to be provided must be dealt with in terms of this logical approach so that wise decisions can be made about future land resource use options. This study applies the aforementioned statement to strategic decision-making regarding information management in the pro

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34

Cowley, Robyn Anne. "The effect of changing water distribution from linear to point source on vegetation and soil following piping of an artesian bore in a semi-arid mulga paddock /." [St. Lucia, Qld.], 2001. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16636.pdf.

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35

Colaizzi, Paul Dominic 1968. "Overwatering controller for landscape irrigation systems." Thesis, The University of Arizona, 1997. http://hdl.handle.net/10150/278585.

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Water conservation in metropolitan areas of Arizona is critical if limited water resources are to meet current and future demands. Timer controlled landscape irrigation systems contribute to a large portion of municipal water use, and there is currently a great potential for water savings when deficit irrigation is practiced. Such systems tend to forfeit deficit irrigation by overwatering vegetation; however, deficit irrigation may be improved if the number of irrigation cycles are reduced based on sensing soil water in the plant root zone. A patent pending electronic circuit, called the overw

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36

Zhu, Minkang. "A multiple objective approach to evaluate economic and environmental impacts of agricultural management systems from a sustainable development perspective." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/38786.

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37

Gebre-Selassie, Samuel. "The development of integrated management information systems for agricultural extension institutions of developing countries : the case of Oromia Agricultural Development Bureau of Ethiopia /." Aachen : Shaker, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009323076&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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38

Yanti, Nuri Dewi. "Sustainability analysis of farming systems in tidal swamplands : a case study in South Kalimantan, Indonesia." University of Western Australia. School of Agricultural and Resource Economics, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0218.

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[Truncated abstract] The initial success of the Green Revolution notwithstanding, the ability of our planet to produce sufficient food to support its growing population is causing growing concern. Indonesia, like many other countries, cannot produce sufficient rice to feed its people. This creates an imperative to import rice that Indonesia wishes to overcome. In addition, agricultural intensification has created ecological contamination from overuse and the mismanagement of chemical inputs. These problems threaten the sustainability of agricultural lands and Indonesia's ability to support nat

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39

Dan-Azumi, J. J. "Agricultural sustainability of smallholder floodplain agricultural systems : a case study of Fadama areas in North-Central Nigeria." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1318073/.

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In the aftermath of the global food crisis, great debates have arisen on the future of African agriculture. The crisis has once again raised the question of food security on the continent. Previous approaches aimed at increasing the agricultural productivity of farmers have failed. This has necessitated a call for a change of approach in which smallholders, who are the bulk of Africa’s food producers, will play a pivotal role. The main challenge facing the continent is how to balance the quest for food self-sufficiency and the demands of sustainability. This thesis is a concrete contribution i

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40

Hartmann, Marco [Verfasser]. "Integrated Farming Systems for Agricultural Development : The Case of Integrated Agriculture Aquaculture on Palawan, Philippines / Marco Hartmann." Aachen : Shaker, 2009. http://d-nb.info/1161311246/34.

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41

Siebert, Stefan. "Analysis of arid agricultural systems using quantitative image analysis, modeling and geographical information systems." Kassel : Kassel Univ. Press, 2006. http://nbn-resolving.de/urn:nbn:de:0002-1929.

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42

Siebert, Stefan. "Analysis of arid agricultural systems using quantitative image analysis, modeling and geographical information systems." Kassel Kassel Univ. Press, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=982924984.

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43

Krusekopf, Charles C. "Land-tenure institutions and agricultural productivity in post-reform China /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/7460.

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44

Meng, Chao. "Simulation-Based Decision Support For Agricultural Supply Chain Performance Improvement." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/581318.

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Grafted vegetable seedlings have been proven to possess higher seed/non-seed diseases resistance and yields compared with non-grafted ones. Owing to the seasonality of vegetable planting and labor intensiveness of grafted seedling production (e.g., grafting operation), U.S. vegetable seedling supply chains suffer from high grafted seedling cost. To make grafted seedlings affordable for vegetable growers, low-cost production systems and cost-efficient grafting capacity must be achieved via optimal design of a grafting operation system and supply chain collaboration, respectively. Toward this en

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45

Frey, Beat W. "Arbuscular mycorrhizas and N-cycling in agricultural plant-soil systems /." [S.l.] : [s.n.], 1993. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10235.

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46

Macmillan, Susan. "An appraisal of wind energy conversion systems for agricultural enterprises." Thesis, Robert Gordon University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330282.

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47

Kinkaid, Eden. "The architecture of ecology: Systems design for sustainable agricultural landscapes." Ohio University Honors Tutorial College / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1366983104.

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48

Marques, Guilherme Fernandes. "Economic representation of agricultural activities in water resources systems engineering /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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49

Stump, Daryl Andrew. "Towards an applied archaeology of East African intensive agricultural systems." Thesis, University College London (University of London), 2006. http://discovery.ucl.ac.uk/1445862/.

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This study questions whether archaeological techniques and perspectives can be applied to aid in the assessment of rural development practices in Africa, and is a response to a gradual paradigm shift that rejects large-scale, top-down modernisation programmes in favour of small-scale projects that are managed locally and employ 'indigenous' systems of knowledge. In Africa, as in other parts of the developing world, the projects that have adopted this alternative approach have tended to focus on rural economies and have drawn upon recent research that has emphasised the unique contexts of indiv

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50

Najar, Santos. "High-Speed Mobile Networks for Modern Farming and Agricultural Systems." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1184.

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ABSTRACT High-Speed Mobile Networks for Modern Farming and Agricultural Systems J.Santos Najar-Ramirez High-speed mobile networks are necessary for agriculture to inventory individual plant health, maximize yield and minimize the resources applied. More specifically, real-time information on individual plant status is critical to decisions regarding the management of resources reserved and expended. This necessity can be met by the availability of environmental sensors (such as humidity, temperature, and pH) whose data is kept on storage servers connected to static and mobile local area networ

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