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Dissertations / Theses on the topic 'Efficiency of use of production stocks'

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Published: 30 May 2022

Last updated: 31 July 2025

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1

Кузьміна, Г. С. "Управління виробничими запасами підприємства (на прикладі ТОВ «Телекарт-Прилад»)". Thesis, Одеський національний економічний університет, 2021. http://local.lib/diploma/Kuzmina.pdf.

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У роботі розглянуто сутність виробничих запасів на підприємстві, класифікацію та облік запасів на підприємстві, основи управління виробничими запасами підприємства. Наведена загальна характеристика підприємства ТОВ «Телекарт-Прилад», виконано аналіз фінансово-економічного стану підприємства, проведено аналіз ефективності управління виробничими запасами підприємства ТОВ «Телекарт-Прилад». Запропоновано підвищити ефективність використання виробничих запасів за рахунок впровадження ERP системи управління виробництвом та запасами та за рахунок нормування обсягу поставки.<br>The essence of prod

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2

Helander, Hanna, and Lovisa Larsson. "Emissions and Energy Use Efficiency of Household Biochar Production during Cooking in Kenya." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-225772.

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This project examines the efficiency of a biochar-producing stove in meeting the needs of households in rural of Kenya. The stove has been tested and evaluated by five household in Embu, Kenya and compared with two other common cooking methods. The main parameters were time consumption, fuel consumption and emissions of carbon monoxide and particulate matter. Usability and energy use efficiency have also been evaluated. Three potential feedstocks have been examined for use in the biochar-producing stove; Grevillea prunings, maize cobs and coconut husks. The biochar-producing stove was well rec

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3

Ranung, Siri, and Jessica Ruud. "Use of Biochar Producing Cookstoves in Rural Kenya : Energy efficiency, air pollution concentrations and biochar production potential." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257882.

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Household air pollution annually kills around 14 300 people in Kenya, due to the hazardous smoke of incomplete combustion coming from inefficient stoves. Exposure to this smokeleads to lethal health issues for the women and children staying in these kitchens, but the smoke also leads to a contribution to global warming. Which makes it important finding are placement for the inefficient traditional cooking methods. This report presents results from a field work situated in Kibugu, Embu in central Kenya. It includes testing of three stoves, the traditional Three stone open fire and two biochar p

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4

Sedibe, Moosa Mahmood. "Optimising water use efficiency for crop production." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53541.

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Thesis (MScAgric)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: Poor water management and poor water use efficiency (WUE) have been identified as one of the major problems experienced by vegetable growers in most of the developing countries, including South Africa. This poor management and poor utilization of water have led to a drastic decline in the quality and quantity of available water. In South Africa agriculture uses about 50% of available water. Increasing water demand for domestic, industrial and mining uses, may decrease agriculture's share to less than the current 5

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5

Butler, Holly. "Optimising nutrient use efficiency in crop production." Thesis, Lancaster University, 2016. http://eprints.lancs.ac.uk/83220/.

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Food security for a growing population presents a significant challenge for crop production, with increasing pressures upon agriculutral productivity. There is a vast need to improve crop yield and quality using an efficient approach that does not present negative environmental impacts. A novel interrogation technique that is able to provide information of the overall health of a plant, would be extremely beneficial in an agriculutral, as well as research, setting. This information could be utilised to better understand the mechanisms of plant functions, including stress responses. Vibrational

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6

Nett, Leif. "N use efficiency in field vegetable production systems." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://dx.doi.org/10.18452/16463.

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In der vorliegenden Studie wurden zwei Fragestellungen bearbeitet, die beide das Ziel verfolgen, die Stickstoff(N)-Ausnutzungseffizienz in landwirtschaftlichen Systemen zu steigern: 1) Hat die langjährige organische Düngung einen Einfluss auf den Abbau kürzlich applizierter organischer Dünger? Die Hypothese war, dass relevante Effekte nur bei schwer abbaubaren organischen Düngern auftreten während bei leicht abbaubaren organischen Düngern die Düngungshistorie keine Rolle spielt. 2) Können die hohen N-Bilanzüberschüsse im intensiven Freilandgemüsebau durch den Einsatz von Winterzwischenfrüchten

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Бондарь, О. С. "Виробничі запаси як об’єкт обліку та контролю: сучасний стан та перспективи розвитку (на прикладі ТОВ «Новоукраїнське»)". Thesis, Одеський національний економічний університет, 2020. http://dspace.oneu.edu.ua/jspui/handle/123456789/12387.

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У роботі розглядаються теоретичні аспекти обліку та контролю стану та руху виробничих запасів. Проаналізовано стан діючої системи обліку та контролю виробничих запасів на підприємстві, здійснено аналіз використання запасів. Запропоновано основні напрями документального оформлення обліку виробничих запасів; створити службу внутрішнього контролю та розробити положення, щодо її функціонування; шляхи вдосконалення обліку та контролю виробничих запасів.<br>The paper considers the theoretical aspects of accounting and control of the state and movement of inventories. The state of the current syst

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8

Basso, Stefania. "Optimization of light use efficiency in Nannochloropsis for biodiesel production." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423473.

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At present energy demand is largely fulfilled by fossil fuels, and it is easy to suppose that also in next decades they will still provide a large fraction of the energy supply. Since oil reserves are finite and the cost for its extraction will continuously raise, it is necessary to find alternatives source of energy. Renewable energy sources represent a good solution to the energy-problem and for this reason they are receiving a strong attention from industry and research centers. Photosynthetic organisms can represent a promising alternative to oil because they can be exploited for the prod

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9

Bousso, Abou Elimane 1952. "Irrigation water use efficiency of crop calorie and protein production in Arizona." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/191991.

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Irrigation water use efficiencies were studied for the State of Arizona in terms of nutritive values such as calories and proteins. The major crops and crop groups, 15 counties, 6 water planning districts, and four irrigation systems were evaluated. Cotton accounted for more than 40 percent of the Statewide total protein production. The most efficient calorie producing crop was potatoe. The feed crops produced the highest percentage of protein. On yield per acre basis, the leading counties were La Paz and Yuma. District IV produced the highest calorie and protein both per acre and acre-foot ba

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10

McClean, Gary James. "Impact of land-use change for lignocellulosic biomass crop production on soil organic carbon stocks in Britain." Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/19568.

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The contribution of energy from biomass sources is projected to increase in Britain to assist in meeting renewable energy targets and reducing anthropogenic CO2 emissions. With increasing concerns over the sustainability of food crop-based biofuels, purpose-grown lignocellulosic biomass crops such as Miscanthus and short rotation coppice (SRC) willow have been promoted as more sustainable feedstocks for the production of heat and electricity as well as for the future production of liquid biofuels. With the introduction of the Energy Crops Scheme, land-use change (LUC) for lignocellulosic bioma

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11

Newby, Adam F. "Increasing Water Application Efficiency in Greenhouse Crop Production UsingGravimetric Data." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366376123.

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12

Acharya, Tej Prasad. "Water Requirements, Use Efficiency, and Insect Infestation in Brussels Sprouts, and Nitrogen Use Efficiency in Sweet Basil under Low Tunnels compared to Open-field Production." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/86610.

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Sustainable vegetable production is one of the most active areas of vegetable research and of concern to all producers. Everyone, both producers and consumers, are concerned with sustainability. Brussels sprouts and sweet basil are high value commodities, but increasing global concerns about water availability, insect-pest problems, and costly fertilizer inputs severely impact the growth and production of these crops. Low tunnels covered with spun-bonded fabric can improve production of vegetables and herbs in Virginia and the U.S. This study investigated the performance of Brussels sprouts an

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13

Näsi, J. (Jari). "Intensified use of process measurements in hydrometallurgical zinc production processes." Doctoral thesis, University of Oulu, 2007. http://urn.fi/urn:isbn:9789514284915.

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Abstract This thesis pursues to evidence that it is possible to get information on the behaviour of a complex chemical process by data-based analysis, even though the accurate reaction chemistry is not known. In the hydrometallurgical zinc production process, metallic zinc is produced by reducing it from aqueous solution. The essential part of the process is the purification of zinc sulphate solution, where all elements nobler than zinc are removed by deposition from the solution. These elements lower the efficiency of the electric current drastically and cause zinc dissolution even in the sma

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14

Reid, Michael Paul. "Supplementation of grazing dairy cows : effects on production, nutrient use efficiency and milk quality." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.696163.

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With the removal of milk quotas in Ireland in 2015, for the first time in 30 years, Irish dairy farmers will be able to increase milk production without the necessity to purchase additional milk quota rights. The aim is to increase milk production by 50% by 2020 compared to the 2007 - 2009 average. Increasing milk volume will challenge both farmers and processors alike. Ireland's milk production is characterised by a spring-calving system, to coincide with grass growth. Ireland ability to produce milk cheaply from grazed grass is considered as the main competitive advantage of Irish dairy farm

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15

Horn, Judith. "Development and Extrapolation of a General Light Use Efficiency Model for the Gross Primary Production." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-134346.

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16

Ståhl, Magnus. "Improving Wood Fuel Pellets for Household Use : Perspectives on Quality, Efficiency and Environment." Doctoral thesis, Karlstads universitet, Avdelningen för energi-, miljö- och byggteknik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-2855.

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Bioenergy is one of many contributors to reducing the use of fossil fuels in order to mitigate climate change by decreasing CO2-emissions, and the potential for biofuels are large. The wood fuel pellets are a refined biofuel made of sawdust, which is dried and compressed to achieve improved fuel and transportation properties. In 2007 the amount of wood fuel pellets used for heating purposes in Sweden was 1715000 tons. The aims of this work was: to examine the moisture content and emission of monoterpenes during the drying and pelletising steps of the pellets production (Paper I); to investigat

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Tonmukayakul, Nop. "Water use efficiency of six dryland pastures in Canterbury." Lincoln University, 2009. http://hdl.handle.net/10182/1498.

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The annual and seasonal water use efficiency of six pasture combinations were calculated from the ‘MaxClover’ Grazing Experiment at Lincoln University. Pastures have been established for six years and are grazed by best management practices for each combination. Measurements for this study are from individual plots of four replicates of ryegrass (RG)/white clover (Wc), cocksfoot (CF)/Wc; CF/balansa (Bal) clover; CF/Caucasian (Cc) clover; CF/subterranean (Sub) clover or lucerne. Water extraction measurements showed soils for all dryland pastures had a similar plant available water content of

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18

Heineman, Arne M. "Species selection for alley cropping in Western Kenya : system management, nutrient use efficiency and tree-crop compatibility (1988-1995)." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318545.

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19

Satterfield, Jason Morris. "Evaluation of technology aimed to improve nitrogen use efficiency for delayed-flood rice (Oryza sativa L.) production." Master's thesis, Mississippi State : Mississippi State University, 2009. http://library.msstate.edu/etd/show.asp?etd=etd-03262009-094038.

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20

Ouyang, Duosheng. "New fertilizer combinations for improved nitrogen and phosphorus use efficiency and reduced environmental damage in corn production." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0004/NQ30353.pdf.

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21

Smith, Jonathan David. "Exploring the use of technical indicators as pricing guides in feeder cattle production criteria." Thesis, Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/74540.

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The objective of this study was to examine the use of technical indicators, in an econometric context, as guides in making pricing decisions relative to feeder cattle production. Technical indicators were developed for both the short and long term. Short term indicators were designed to capture divergence/convergence between the Relative Strength Index and the futures price stream to form the Price Linked to Divergence index. A long term indicator using an average difference in price over a longer period was developed to form the Price Linked to Trend index. These indicators were used in the e

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22

Wallace, Ashley J. "The effect of environment, soil type and farm system management on nitrogen use efficiency and nitrous oxide emissions from cereal crops in south eastern Australia." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/232432/1/Ashley_Wallace_Thesis.pdf.

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This thesis outlines findings from a series of field experiments measuring the efficiency with which wheat and barley crops grown in south eastern Australia utilise nitrogen (N) fertiliser, with particular focus on loss of N as emissions of the greenhouse gas: nitrous oxide. N use efficiency varied significantly across regions, seasons and management strategies, while nitrous oxide emissions were highest in high rainfall environments or under irrigation compared with lower rainfall environments. Strategies which match the rate and timing of fertiliser application to crop demand resulted in gre

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23

de, Vasconcelos Judson Tadeu. "The use of different nutritional strategies and mathematical models to improve production efficiency, profitability, and carcass quality of feedlot cattle." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4690.

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Forty eight crossbred steers (BW = 296 ÃÂ± 16.7 kg) were fed four dietary treatments for 56 d: AL-LS (low starch diet fed ad libitum for a rate of gain of 1 kg/d), AL-HS (high starch diet fed ad libitum), LF-HS (a limit fed high starch diet designed to be isocaloric with AL-LS), and AL-IS (a diet fed ad libitum for the midpoint daily energy intake between AL-LS and AL-HS). On d 57 all steers were placed on AL-HS for finishing until d 140. Steers that consumed more total energy (AL-HS and AL-IS) throughout production achieved greater carcass fatness in the end of the 140 d period, although the

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24

Horn, Judith [Verfasser], and Karsten [Akademischer Betreuer] Schulz. "Development and Extrapolation of a General Light Use Efficiency Model for the Gross Primary Production / Judith Horn. Betreuer: Karsten Schulz." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2011. http://d-nb.info/1015500684/34.

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Villalba, Hugo Abelardo González. "Blending polymer-sulfur coated and NBPT-treated urea to improve nitrogen use efficiency and grain yield in corn production systems." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-14082018-100857/.

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Blends of controlled release and stabilized nitrogen (N) fertilizer represent an alternative to provide N at all corn growth stages, and is an option to reduce costs compared to the use of solely controlled release N. In this context, field experiments were conducted in Southeast Brazil with the use of a blend of polymer-sulfur coated urea (PSCU) and NBPT-treated urea (NBPTU) at a 70:30 ratio, applied at corn planting and incorporated into the soil. The objectives of the study were: i) to quantify and measure each fertilizer-derived N fate in the plants, and determine the nitrogen recovery eff

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26

Noronha, Sannervik Angela. "Modelling productivity of willow stands in Sweden : evaluation of concepts for radiation use efficiency and soil water and nitrogen availability /." Uppsala : Dept. of Short Rotation Forestry, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s286-ab.html.

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27

Mpouam, Serge Eugene [Verfasser]. "Determinants of resource use and use efficiency in urban and peri-urban dairy, beef cattle and pig production units in Ouagadougou, Burkina Faso (West Africa) / Serge Eugene Mpouam." Kassel : Universitätsbibliothek Kassel, 2020. http://d-nb.info/1217036598/34.

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Yan, Hao, Shao-Qiang Wang, Rocha Humberto R. da, et al. "Simulation of the Unexpected Photosynthetic Seasonality in Amazonian Evergreen Forests by Using an Improved Diffuse Fraction-Based Light Use Efficiency Model." AMER GEOPHYSICAL UNION, 2017. http://hdl.handle.net/10150/626446.

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Understanding the mechanism of photosynthetic seasonality in Amazonian evergreen forests is critical for its formulation in global climate and carbon cycle models. However, the control of the unexpected photosynthetic seasonality is highly uncertain. Here we use eddy-covariance data across a network of Amazonian research sites and a novel evapotranspiration (E) and two-leaf-photosynthesis-coupled model to investigate links between photosynthetic seasonality and climate factors on monthly scales. It reproduces the GPP seasonality (R-2=0.45-0.69) with a root-mean-square error (RMSE) of 0.67-1.25

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Ponce, Campos Guillermo. "Ecosystem Net Primary Production Responses to Changes in Precipitation Using an Annual Integrated MODIS EVI." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202736.

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In this study, the relationship of above-ground net primary productivity (ANPP) with precipitation using the enhanced vegetation index (EVI) from satellite data as surrogate for ANPP was assessed. To use EVI as a proxy for ANPP we extracted the satellite data from areas with uniform vegetation in a 2x2 km area for the multi-site approach.In the multi-site analysis in the United States our results showed a strong exponential relationship between iEVI and annual precipitation across the sites and climate regimes studied. We found convergence of all sites toward common and maximum rain use effici

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Barata, Maria do Carmo Canas Fernandes Temudo. "Estudo da gestão eficiente da água na cultura do pimento com filmes de cobertura do solo." Master's thesis, ISA/UL, 2014. http://hdl.handle.net/10400.5/8250.

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Mestrado em Engenharia do Ambiente - Instituto Superior de Agronomia<br>The use of plastic films in agriculture is expanding worldwide over the last decades because of their benefits on crop growth and yield, increasing economic benefit. However, its utilization causes a serious disadvantage with massive quantities of waste. The introduction of biodegradable films, which can be disposed directly into the soil, can be one possible solution to this problem. Biodegradable plastics for mulching practices appeared on the market and now they are considered an appropriate solution for such a problem.

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Berggren, Martin. "Bacterial use of allochthonous organic carbon for respiration and growth in boreal freshwater systems." Doctoral thesis, Umeå : Department of Ecology and Environmental Science, Umeå University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-30051.

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Mills, Annamaria. "Understanding constraints to cocksfoot (Dactylis glomerata L.) based pasture production." Phd thesis, Lincoln University. Agriculture and Life Sciences Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20070717.161658/.

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This research examined the mechanisms by which temperature, water availability and nitrogen (N) affect the dry matter (DM) yield potential of cocksfoot (Dactylis glomerata L.) dominant pastures. The experiment was a split plot design with main plots of fully irrigated (I) or dryland (D), sub-plots of N fertiliser at 800 kg N/ha in 2003/04; and 1600 kg N/ha in 2004/05 (+N) or 0 kg N/ha (-N). The potential environmental yield of an established 8 year old cocksfoot dominant pasture was 21.9 t DM/ha/y from I+N pastures compared with 9.8 t DM/ha by I-N pastures and 15.1 t DM/ha/y by D+N pastures.

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Bateki, Adjogo Christian [Verfasser], and Uta [Akademischer Betreuer] Dickhöfer. "Adaptation of herd simulation models to predict the efficiency of the use of resources in tropical ruminant production systems / Christian Bateki Adjogo ; Betreuer: Uta Dickhöfer." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2020. http://d-nb.info/1220774707/34.

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Bateki, Christian [Verfasser], and Uta [Akademischer Betreuer] Dickhöfer. "Adaptation of herd simulation models to predict the efficiency of the use of resources in tropical ruminant production systems / Christian Bateki Adjogo ; Betreuer: Uta Dickhöfer." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2020. http://d-nb.info/1220774707/34.

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Murata, Monica Rujeko. "The impact of soil acidity amelioration on groundnut production and sandy soils of Zimbabwe." Diss., University of Pretoria, 1995. http://upetd.up.ac.za/thesis/available/etd-08152003-155125.

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Jägermeyr, Jonas. "Assessing opportunities to increase global food production within the safe operating space for human freshwater use." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2017. http://dx.doi.org/10.18452/17802.

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Die Landwirtschaft ist heute der wichtigste Treiber der globalen Degradation von Ökosystemen. Es existiert jedoch wenig konkretes Wissen, wie Ökosysteme zu schützen sind und gleichzeitig die Nahrungsproduktion für die wachsende Weltbevölkerung gesichert werden kann. In dieser Dissertation untersuche ich Optimierungsmöglichkeiten im landwirtschaftlichen Wassermanagement. Ich quantifiziere praxisorientierte Verbesserungen der Regenwassernutzung und Optimierungen von Bewässerungssystemen, unter Einhaltung der „environmental flow requirements“ (EFRs). Um diese komplexen Interaktionen zu untersuch

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Munhoz, Juliana Soares Biruel. "Influência dos fatores edafoclimáticos na produtividade e na eficiência do uso dos recursos naturais do Pinus taeda L. sob distintos manejos no Sul do Brasil." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-05012016-134126/.

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Devido ao aprimoramento das práticas silviculturais e do melhoramento genético para seleção de genótipos mais produtivos, a produtividade do Pinus taeda no Brasil é reconhecida entre as maiores do mundo. Mesmo com alta produtividade em determinados sítios, sua variação é consideravelmente grande. Sabe-se que a disponibilidade de água, luz e nutrientes são fatores essenciais para a produção de madeira, onde a eficiência de uso desses recursos influenciam nesta variação do produtividade. Contudo, a ausência de fertilização em plantios de Pinus é majoritária nas áreas comerciais no Brasil, devido

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Perez, Denise. "Light-Use Efficiency of Coral-Reef Communities: A Sensitivity Analysis Using an Optically Based Model of Reef Productivity and Calcification." NSUWorks, 2013. http://nsuworks.nova.edu/occ_stuetd/99.

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Biogeochemical processes of reefs have been studied for over fifty years, however, information is still lacking on several fundamental reef processes. This lack of information has been limited essentially by techniques that cannot repeatedly sample large spatial areas. These limitations can be reduced with the use of an optical model to estimate biogeochemical processes. This project applied Monteith's light-use efficiency model to coral reef communities for determining photosynthetic and calcification efficiency of light. Gross primary production and net calcification were pooled from the pee

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Nett, Leif [Verfasser], Eckhard [Akademischer Betreuer] George, Christof [Akademischer Betreuer] Engels, and Walter [Akademischer Betreuer] Horst. "N use efficiency in field vegetable production systems : catch crop strategies and fertilization history effects on organic fertilizer turnover / Leif Nett. Gutachter: Eckhard George ; Christof Engels ; Walter Horst." Berlin : Humboldt Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://d-nb.info/1020229918/34.

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Lima, Eirivelthon Santos. "Essays on Labor Allocation by Small Scale Farmers in the Brazilian Amazon." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/104966.

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Human health is frequently omitted from household-level studies on agricultural productivity, land-use choices, and forest degradation and deforestation. Intuition, however, suggests that it could be an extremely important factor. This dissertation is built on three essays that use household survey data from the Brazilian Amazon to examine the conditions under which human health and other critical market conditions are important factors in determining household agriculture production choices and efficiency. Essay I (Chapter 2) examines how health affects the labor allocation and production c

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Crafford, J. G. (Jacobus Gert). "Assessing the costs and benefits of water use for production and the potential of water demand management in the Crocodile Catchment of South Africa." Diss., University of Pretoria, 2004. http://hdl.handle.net/2263/26559.

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In South Africa, precipitation is extremely variable and water is scarce. South Africa is also a country with great welfare needs. Challenging economic development targets and plans therefore need to be implemented successfully within the constraints of limited water supply and unreliable water availability. These economic development plans are underpinned by the development and growth of economic activities such as agriculture, mining, energy production and many types of small, medium and micro enterprises, which are some of the largest water using sectors in the economy. Within these activit

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Yin, Fang. "Cropland changes during 1980 to 2011 in China." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21990.

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Die Nachfrage nach Agrarprodukten hat rapide zugenommen, besonders in schnell wachsenden Volkswirtschaften. Agrarimporte nach China gestiegen, trotz der vielfach gestiegenen Inlandsproduktion seit der Reform und Öffnung 1978. Jedoch ging die Steigerung der Agrarproduktion einher mit hohen Umweltkosten, zum einen durch eine massive Erhöhung der Inputintensität und zum anderen durch die Veränderung der Anbaumuster. In dieser Arbeit habe ich umwelt- und sozioökonomische Daten auf Kreis-Ebene analysiert, um ein grundliegendes quantitatives Verständnis der Muster, Determinanten und Ursachen der lan

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Campoe, Otávio Camargo. "Efeito de práticas silviculturais sobre a produtividade primária líquida de madeira, o índice de área foliar e a eficiência do uso da luz em plantios de restauração da Mata Atlântica." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-25072008-122441/.

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Os objetivos do estudo foram identificar o melhor modelo de restauração pela manipulação da composição florística e práticas silviculturais, e compreender como este melhor desenvolvimento é explicado pelos fatores que controlam o uso e a eficiência do uso da luz pelo dossel florestal. Com esta fundamentação foi instalado em 2004, na Estação Experimental de Anhembi/ESALQ/USP, o ensaio \"Modelos de restauração de áreas degradadas da Mata Atlântica visando o seqüestro de carbono\", com 20 espécies nativas e oito sistemas de restauração florestal, baseados em um delineamento fatorial 23, com três

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Campoe, Otávio Camargo. "Ecologia da produção e da competição intra-específica do Eucalyptus grandis ao longo de um gradiente de produtividade no estado de São Paulo." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-17042012-105858/.

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A produtividade dos plantios de eucalipto no Brasil apresentou ganhos significativos nas últimas décadas devido a avanços em melhoramento genético e silvicultura. Contudo, a produção de madeira representa apenas uma fração da produtividade primária bruta (GPP). Avaliar fluxos e partição de carbono (C) entre os diferentes componentes da floresta, e estudar o uso e a eficiência de uso dos recursos disponíveis é essencial para compreender os mecanismos que controlam a produtividade de plantios intensivamente manejados. O estudo quantificou os fluxos e partição de C e a eficiência de uso da luz pa

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Ponte, Jorge Filipe Santos Rodrigues da. "A eficiência da utilização de recursos públicos no sistema de produção de conhecimento." Master's thesis, Instituto Superior de Economia e Gestão, 2012. http://hdl.handle.net/10400.5/4963.

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Mestrado em Economia e Gestão de Ciência, Tecnologia e Inovação<br>Apesar de ser um sector com elevado potencial de provocar crescimento económico, a I&D não está imune à necessidade de se avaliar o papel de financiador do Estado. Neste sentido o presente estudo exploratório visa avaliar a eficiência da utilização de recursos públicos no sistema de produção de conhecimento através da metodologia não paramétrica DEA, com posterior bootstrap para obter indicadores de eficiência imunes a enviesamento derivados da amostra. Posteriormente analisa-se o impacto de variáveis exógenas através de anális

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Vesterberg, Mattias. "Power to the people : electricity demand and household behavior." Doctoral thesis, Umeå universitet, Nationalekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-130933.

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Paper [I] Using a unique and highly detailed data set on energy consumption at the appliance-level for 200 Swedish households, seemingly unrelated regression (SUR)-based end-use speciﬁc load curves are estimated. The estimated load curves are then used to explore possible restrictions on load shifting (e.g. the ofﬁce hours schedule) as well as the cost implications of different load shift patterns. The cost implications of shifting load from "expensive" to "cheap" hours, using the Nord Pool spot prices as a proxy for a dynamic price, are computed to be very small; roughly 2-4% reduction in tot

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GALVAGNO, MARTA RITA. "Carbon dioxide exchange of an alpine grassland: integration of eddy covariance, proximal sensing and models." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2011. http://hdl.handle.net/10281/24290.

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The terrestrial biosphere represents a large pool of carbon, whose cycle is governed by the opposed processes of CO2 uptake (photosynthesis) and release (respiration) from and to the atmosphere. Considering the role of carbon dioxide in the observed global warming, monitoring, understanding and modeling carbon exchange of ecosystems is a critical issue in climate change researches. Moreover because of the multiple implications of vegetation structure dynamics on ecosystem carbon ﬂuxes, monitoring and modeling plant phenology is also of increasing scientific interest. Among terrestrial e

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Ferchaud, Fabien. "Etude des bilans d’eau, d’azote et de carbone dans des agrosystèmes dédiés à la production de biomasse en fonction des espèces et des pratiques culturales." Thesis, Paris, AgroParisTech, 2015. http://www.theses.fr/2015AGPT0037.

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Les biocarburants de 2ème génération pourraient fournir une énergie renouvelable au secteur des transports et ainsi permettre de lutter contre le changement climatique. Toutefois, leurs bilans gaz à effet de serre, énergétiques et environnementaux seront probablement très dépendants des ressources utilisées. Les cultures lignocellulosiques candidates à la production de biocarburant 2G devront ainsi concilier forte productivité, faibles besoins en intrants et faibles impacts environnementaux. L’objectif de la thèse a été de quantifier les bilans d’eau, d’azote et de carbone à l’échelle de la pa

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Balde, Hamadou. "Remote sensing of laser- and sun-induced chlorophyll fluorescence for studying water and carbon functioning in terrestrial ecosystems." Electronic Thesis or Diss., Sorbonne université, 2023. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2023SORUS674.pdf.

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La fluorescence chlorophyllienne induite par le soleil (SIF) est désormais utilisée comme outil pour suivre la production primaire brute (GPP) du couvert végétal de différents écosystèmes. La SIF est importante pour comprendre le cycle global du carbone dans un contexte de changements climatiques. Cependant, l’usage de la SIF pour suivre les variations de la GPP est entravée par des facteurs confondants (propriétés biochimiques des feuilles, facteurs abiotiques, etc.). Dans cette thèse, on propose d’utiliser des observations à plusieurs échelles [satellitaires (TROPOMI et MODIS) et au sol] de

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Varella, Alexandre Costa. "Modelling lucerne (Medicago sativa L.) crop response to light regimes in an agroforestry system." Lincoln University, 2002. http://hdl.handle.net/10182/1477.

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The general goal of this research was to understand the agronomic and physiological changes of a lucerne crop in distinct physical radiation environments and to verify the potential of lucerne to grow under shaded conditions. To achieve this, the research was conducted in four main steps: (i) firstly, experimental data collection in the field using two artificial shade materials (shade cloth and wooden slats) under inigated and non-irrigated conditions; (ii) a second experiment with data collection in a typical temperate dryland agroforestry area under non-irrigated conditions; (iii) generatio

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