Дисертації з теми "Mass and energy balance analysis"
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Migliavacca, Alencar. "Balanço de massa, energia e exergia na produção intensiva de frangos de corte." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3150/tde-06122017-090731/.
Повний текст джерелаBrazilian production of broilers has been highlighted with the implantation of the integrated production system, which improved the efficiency and quality in animal protein conversion. However, due to the rapid technological evolution with the increasing energy demand and the diversification of production systems in different microclimates, elucidating mass and energy conversion processes has become a challenging task regarding this production system. Constantly, researchers, producers and agribusiness look for more profitable processes, reducing the labour demand and environmental impact. However, an integrated evaluation of the productive system of broilers, considering the quantitative, energy and environmental aspects has never been carried out. Thus, this study aims at promoting a detailed mass and energy balance and to evaluate the quality of the energy conversions in the productive process of broilers by means of exergy analysis. With the survey of inputs, products and direct wastes, linked to the production cycle, the mass flow rates for the different processes of the cycle were quantified and a complete diagnosis of the quantity and quality energetic involved was obtained applying the exergy evaluation. Considering the scenario adopted, in mass terms, the greatest demands identified for the inputs were water (69.2%) and feed (24.9%). At the exit of the process, the greenhouse gases/dust extracted through ventilation (39.4%), the firewood combustion gases (25.6%) and the litter poultry generated (14.2%) are the main outputs. The broilers mass was quantified in 20%. The relation between water and feed consumption has shown to be the temperature. Regarding energy, the largest contribution identified for the inputs was feed (77.7%) followed by the absorbent (9.7%) and firewood (9.6%). At the exit of the process lead the energy associated with the broilers (33.2%) and the poultry litter generated (32.1%). The energy performance obtained for conventional shed was 27%. The processes of the largest exergy destroyed within the productive cycle are the litter poultry converted from excreta (51.5% in conventional and 48.2% in air conditioning) and the combustion of wood for heating (21.9% in conventional and 20.5% in air conditioning). In addition, the second law performance for the cycle was estimated in about 26%. The energy and exergy production index was introduced allowing for the comparison among different systems. As the main residue, the litter poultry generated in the cycle when reused as an input for heating the aviary itself in the form of briquettes, can increase these efficiencies. The use of LPG is more environmentally friendly compared to wood, considering the average demands for the too forms of heating, due to the direct form of heat transfer to the broilers. It is advisable, on hot days, to raise the air speed using the evaporative cooling only in cases of high ambient temperature, as the introduction of water raises the exergy dissipated in the cycle.
Phuthi, Thabisani Nigel. "Steelmaking with the ESS furnace : a model-based metallurgical analysis." Diss., University of Pretoria, 2020. http://hdl.handle.net/2263/75934.
Повний текст джерелаDissertation (MEng)--University of Pretoria, 2020.
Materials Science and Metallurgical Engineering
MEng
Unrestricted
Rafiee, Nima. "Process design and energy efficiency analysis of an oil and gas processing plant." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Знайти повний текст джерелаGrimaldi, David Andres. "Dissolved Gases and a Carbon Dioxide Balance from the San Vicente Geothermal Fieldin El Salvador, Central America." Ohio University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1615276127141058.
Повний текст джерелаClaverie, Etienne. "Modélisation de la température du sol avec un bilan d’énergie, application à la prédiction de l’émergence du maïs (Zea mais)." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLC028/document.
Повний текст джерелаThe beginning of crop growth is influenced by soil temperature and water content near the surface. We have developed a model that predicts the local temperature and water content surrounding the seed using easily available meteorological data. Our global sensitivity analysis helped us identify the components of the model with the largest contribution to the output uncertainty. After calibration, the model showed less than 10 % relative error for temperature and water content at 30 cm. In standard sowing conditions in north-western Switzerland, the emergence was better predicted when using our simulated seed bed temperature than air temperature, the classical proxy variable. Combining the emergence model with soil temperature simulation, an accurate prediction of emergence was achieved. This work is an example of applying complex biophysics model for understanding an agronomic problem. The results of this work will participate in optimising breeding efforts for cold-tolerant crop varieties. Future investigations should consider a finer modelling of processes for evaporation and emergence
Ranasinghe, Milinda A. "Modelling the mass and energy balance in a compost biofilter." Thesis, University of Canterbury. Chemical and Process Engineering, 2003. http://hdl.handle.net/10092/7492.
Повний текст джерелаFang, Yuan-Hao, Xingnan Zhang, Chiara Corbari, Marco Mancini, Guo-Yue Niu, and Wenzhi Zeng. "Improving the Xin'anjiang hydrological model based on mass–energy balance." COPERNICUS GESELLSCHAFT MBH, 2017. http://hdl.handle.net/10150/625180.
Повний текст джерелаSurowiec, Roman. "Mass energy analysis of processing plasmas." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321132.
Повний текст джерелаRodríguez, Sánchez Jonay. "Energy Analysis of an Historical Church, Sjömanskyrkan : Energy balance and efficiency measures." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-17174.
Повний текст джерелаHuintjes, Eva [Verfasser]. "Energy and mass balance modelling for glaciers on the Tibetan Plateau : extension, validation and application of a coupled snow and energy balance model / Eva Huintjes." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1065848064/34.
Повний текст джерелаDeBuhr, Christopher Leonard. "Metamorphic petrology and mass balance analysis in the Bugaboo contact aureole." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0019/NQ49488.pdf.
Повний текст джерелаNilsson, Simon. "Influence of fuel mix on mass balance of Cl, S, and K in a long rotary kiln." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-160532.
Повний текст джерелаLaukkanen, Mikko. "Project Solaris - Mass and balance analysis tool for a solar powered UAV." Thesis, Mälardalen University, School of Innovation, Design and Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-7449.
Повний текст джерелаEriksson, Pia. "Meteorological differences between Rabots glaciär and Storglaciären and its impact on ablation." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-121546.
Повний текст джерелаCoffey, Michael Peter. "A phenotypic and genetic analysis of energy balance in dairy cows." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/27814.
Повний текст джерелаBERNARD, Pierre. "Modelling, analysis and optimization of thermal energy balance in anaerobic digestion." Thesis, KTH, Energiteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210187.
Повний текст джерелаAssessing the profitability of an anaerobic digestion (AD) plant requires knowing its thermal self-consumption. This Master Thesis aims at providing a comprehensive model to calculate the thermal self-consumption of two different types of AD plants: wet (Continuous Stirred Tank Reactors) and dry (Garage-type dry AD). The energy to warm up the feedstock, the energy lost with water evaporation and the losses of the different tanks of the process were considered. A particular attention was paid to the double-membrane roof. Different reality checks were carried out in order to assess the validity of the model, whose results agree reasonably well. The thermal self-consumption of a plant is mainly defined by the heat necessary to warm up the feedstock and by the losses from the double-membrane roof. To improve the thermal performance of AD plants, it is needed to focus on the feedstock initial temperature (storage modes …) which accounts for a significant part of the heat requirements. Furthermore, losses from the double-membrane roof amounts up to 80% of the losses of a digester (wet AD plant) and 60% of the losses of a dry AD plant. Insulating the roof with a 3rd membrane in order to break convection has thus been studied and the savings in heating due to this solution are promising.
Brunzell, Lena. "Energy Efficient Textile Drying." Licentiate thesis, Karlstad University, Faculty of Technology and Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-729.
Повний текст джерелаTraditionally, textiles were dried outdoors with the wind and the sun enhancing the drying process. Tumble dryers offer a fast and convenient way of drying textiles independent of weather conditions. Tumble dryers, however, consume large amounts of electrical energy. Over 4 million tumble dryers are sold each year in Europe and a considerable amount of energy is used for drying of clothes. Increasing energy costs and the awareness about environmental problems related to a large energy use has increased the demand for dryers with better energy efficiency. The aim with this thesis is to show how to improve the energy efficiency of domestic tumble dryers.
Two types of tumble dryers are available on the market today: the open cycle dryer and the closed cycle dryer. In the open cycle dryer room air is heated and led into the drying drum. The exhaust air leaves the dryer and is often evacuated outside the building. In the closed cycle dryer an internal airflow is recirculated inside the dryer. When the hot air has passed through the drying drum it is led through a heat exchanger where the water vapour is condensed before the air is heated again and led to the drum. The heat exchanger is cooled with room air.
Drying at low temperature has been shown to reduce the specific energy use for an open cycle tumble dryer. In Paper I a correlation between the specific energy use, the drying time and the heat supply was established for a specific load by using the exhaust air temperature. It was shown that the total drying time and specific energy use could be predicted from data during the first hour of the process. This result indicated a possibility to create a control system that makes it possible for the user to choose between low energy use or short drying time.
The focus of Paper II is to reduce the energy use for a closed cycle tumble dryer. Energy and mass balances were established in order to determine feasible improvements. Energy and mass flows in the dryer indicated that reducing leakage from the internal system of the dryer gave the largest reduction of specific energy use. Insulation of the back cover of the dryer and opening the internal system during the falling drying rate period also gave positive results on the energy use. In total a feasible reduction of the energy use of approximately 17% was calculated.
Bergman, Ottar. "A Regional Analysis of Changing Climate Conditions and Glacier Mass Balance in Svalbard." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-383930.
Повний текст джерелаClendon, Penelope Catherine. "Summertime surface mass balance and atmospheric processes on the McMurdo Ice Shelf, Antarctica." Thesis, University of Canterbury. Geography, 2009. http://hdl.handle.net/10092/2630.
Повний текст джерелаPucci, Justin Matthew. "An analysis of energy balance in a helicon plasma source for space propulsion." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39669.
Повний текст джерелаThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references (p. 107-110).
This thesis covers work done on the mHTX@MIT helicon source as it relates to the analysis of power losses. A helicon plasma is a rather complex system with many potential loss mechanisms. Among the most dominant are optical radiation emission, wall losses due to poor magnetic confinement, and poor antenna-plasma coupling. This work sought to establish a first-order breakdown of the loss mechanisms in the mHTX@MIT helicon source so as to allow for a better understanding of the issues effecting efficiency. This thesis proposes the use of a novel thermocouple array, standard plasma diagnostics, and a simple global energy balance model of the system to determine greater details regarding the losses incurred during regular operation. From this it may be possible, by comparing the heat flux on the tube to the applied magnetic field profile, to gain some insight into the effects of magnetic field geometry on the character of the helicon discharge.
by Justin Matthew Pucci.
S.M.
Sensoy, Aynur. "Physically Based Point Snowmelt Modeling And Its Distribution In Euphrates Basin." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605945/index.pdf.
Повний текст джерелаEriksson, Rehn Ida. "Mass balance and local characteristics of three glaciers in southern Norway, between 1980 and 2018 : An analysis of the mass balance and the local characteristics of Ålfotbreen, Storbreen and Gråsubreen." Thesis, Stockholms universitet, Institutionen för naturgeografi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-184671.
Повний текст джерелаMcCutcheon, Michael Warren. "Analysis of a 2-3 exchange symmetric neutrino mass matrix." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79048.
Повний текст джерелаWallace, Scott J. "Diesel Engine Energy Balance Study Operating on Diesel and Biodiesel Fuels." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1212586902.
Повний текст джерелаGUIDOTTI, EMANUELE. "Analysis of the Unsteady Flow in an Aspirated Counter-Rotating Compressor Using the Nonlinear Harmonic Balance Method." University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1218690946.
Повний текст джерелаFairman, Jonathan George. "Investigating paleoclimatic conditions in the tropical Andes using a 2-D model of glacial mass energy balance and ice flow /." Connect to resource, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1211912269.
Повний текст джерелаFairman, Jonathan George Jr. "Investigating Paleoclimatic Conditions in the Tropical Andes Using A 2-D Model of Glacial Mass Energy Balance and Ice Flow." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211912269.
Повний текст джерелаAlizadeh, Ramin. "A new upper limit on the electron anti-neutrino rest-mass." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236237.
Повний текст джерелаWoocay-Prieto, Arturo. "Groundwater hydrochemical facies, flowpaths and recharge determined by multivariate statistical, isotopic and chloride mass-balance methods." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Повний текст джерелаLedwith, Alison C. (Alison Catherine). "Thermal mass performance in residential construction : an energy analysis using a cube model." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/78146.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 233-241).
Given the pervasiveness of energy efficiency concerns in the built environment, this research aims to answer key questions regarding the performance of thermal mass construction. The work presents the Cube Model, a simplified model of the single-family home. The model combines simplified geometry and equivalent envelope parameters with accurate climate data and internal loading assumptions. The model first addresses the notion as to whether building simplification is a valid means of analysis through a calibration and validation study. Then, the model is used to address three research areas on passive thermal mass: (1) the quantification of thermal mass performance with respect to material thermal properties; (2) the optimization of thermal mass performance for given material parameters; and (3) the sensitivity of thermal mass performance to infiltration and geometry effects. The experiments for wall and slab constructions, to address the first research area, demonstrate that the energy savings from thermal mass are both climate and season dependent. Results provide the magnitude of energy savings in fifty climates across the United States. Optimization experiments on the material thickness and conductivity, to address the second research area, show that constructions do not reach peak thermal mass performance at the same thermal properties in all climates. Sensitivity analyses, to address the third research area, indicate that passive thermal mass and tight construction practices can be mutually optimized without a trade-off of energy performance. Geometry effects demonstrate that modifications in building design can either benefit or hinder the performance of passive thermal mass. The combination of the results suggests that optimum design for thermal mass performance and the resulting energy consumption are climate-dependent and sensitive to many factors aside from material thermal properties.
by Alison C. Ledwith.
S.M.
Mählkvist, Simon, and Netzell Pontus. "Pulp mill heat and mass balance model : Exploring the benefits and possibilities of process modelling as an applied method in a case study." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-41292.
Повний текст джерелаStärner, Nathalie. "Mass balance analysis of phosphorous in Motala Ström River Basin : A focus on lake Roxen and Glan." Thesis, Linköpings universitet, Tema vatten i natur och samhälle, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-81971.
Повний текст джерелаMagnusson, Hans. "From recovery boiler to integration of a textile fiber plant : Combination of mass balance analysis and chemical engineering." Licentiate thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-37266.
Повний текст джерелаModern chemical technology is an extremely efficient tool for solving problems particularly in a complicated environment such as the pulp and paper industry. Here, examples are studied during which chemical technology is of fundamental importance. At normal conditions the molten salt mixture from the kraft recovery boiler flows down into the dissolving tank without hindrance. However, for certain kraft recovery boiler alternatives, knowledge of more precise data of the molten salts is required. The viscosity for the case of sodium carbonate and 30 mole% sulphide has been measured and is of the magnitude 2 – 3 cP at relevant temperatures. The main input of non-process elements (NPE) is down to the wood, and known problems include deposits in evaporators and decreasing efficiency in the causticization department. Green liquor clarification is an efficient kidney for many NPE. Magnesium added in the oxygen delignification does not form a closed loop. Integration of a prehydrolysis kraft pulp mill producing dissolving pulp with a plant producing viscose textile fiber could be of significant interest, as the handling of both alkali and sulphuric compounds can be integrated. Problems will however arise as the capacity of the pulping line and the chemical recovery has to be adjusted.
Marriott, P. "Angular and mass resolved energy distribution measurements with a gallium liquid metal ion source." Thesis, University of Salford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376877.
Повний текст джерелаSpence, Joshua. "PERVIOUS CONCRETE: A HYDROLOGIC ANALYSIS FOR STORMWATER MANAGEMENT CREDIT." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4176.
Повний текст джерелаM.S.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering
Daou, Fatma. "Etude expérimentale d'un procédé de dépollution par décharge couronne à barrière diélectrique type pointe(s) - plan : rôle de la simulation numérique et du marquage isotopique." Paris 6, 2002. http://www.theses.fr/2002PA066488.
Повний текст джерелаBanchik, Leonardo David. "Osmotic mass exchangers for power generation and energy recovery : analysis and analogy to heat exchangers." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81592.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 151-156).
Desalination is an important separation process which can provide water scarce regions with clean water for drinking or for agricultural use. Thermal distillation has historically been the dominant method for obtaining pure water, but today, reverse osmosis (RO) produces a greater percentage of the total desalinated water worldwide by a large margin. Fundamentally, an RO system is a membrane-based osmotic mass exchanger. Another type of membrane-based osmotic process, a subset of forward osmosis (FO) called pressure retarded osmosis (PRO), currently exhibits promise for making desalination more energy efficient and is receiving attention in the literature. PRO exchangers are capable of producing power from two streams of different salinity and recovering energy from the brine stream of any desalination process when paired with water pumps and turbines. RO and PRO exchangers are essentially mass exchangers with a hydraulic or osmotic pressure difference across a membrane acting as the predominant driving potential. Using a simple resistance model for mass transfer applied across an ideal RO and PRO membrane, closed form expressions are developed which relate the performance of a one-dimensional membrane as a function of membrane properties, membrane area, inlet salinities, operating conditions, and flow configuration. These closed form expressions are analogous to the effectiveness versus number of transfer unit (c-NTU) models which have been used for decades in the rating and sizing of heat exchangers. The closed form expressions, along with numerical simulations for validating the models, are used to determine the limits of permeate flux in one-dimensional RO, PRO, and FO membranes; analyze the power performance of a one-dimensional PRO membrane; and determine the viability of using a PRO-based energy recovery device to reduce the net power consumption for RO desalination. The closed-form solutions for determining the performance of the RO and PRO membranes require that osmotic pressure be defined as a linear function of salinity. It is found that for a seawater RO process with a typical recovery ratio of 50% or less, the maximum error associated with linearization is less than 6.1%. For brackish water desalination, where processes typically operate at very high recovery ratios but have brine salinities lower than those encountered in seawater desalination, the error does not exceed 1.8%. For PRO membranes, using varying linearization curves, maximum errors for flux performance of less than 5.5% are incurred by the linear approximation. It is also found that the maximum Second Law efficiency of the power achievable from a one-dimensional PRO membrane is 66.48%. For large membrane areas, the maximum power for a PRO membrane occurs at a hydraulic pressure difference that is not equal to exactly one-half the osmotic pressure difference as reported in literature for zero-dimensional PRO membranes. For PRO membranes used for brine chemical energy recovery from an RO plant treating a feed stream of 35 g/kg, it is found that a wastewater salinity of less than 20 g/kg is required to recover power. Because the membranes within this study have been assumed as ideal, the performance results for flux, power, and power recovery can serve as informative upper bounds.
by Leonardo David Banchik.
S.M.
Jones, Sarah Melissa Jane. "Mixing, mass transfer and energy analysis across bioreactor types in microalgal cultivation and lipid production." Doctoral thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20064.
Повний текст джерелаSnell, Lloyd Dale. "Force and moment analysis of stacked counter rotating eccentric mass tree shaker energy-wheel system." [Ames, Iowa : Iowa State University], 2008.
Знайти повний текст джерелаThuong, Nguyen Thi. "Heavy Metal Contamination in Water and Sediment of To Lich River in Inner City Hanoi." 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/180494.
Повний текст джерелаHung, Aaron. "ENERGY EFFICIENCY AND STATISTICAL ANALYSIS OF BUILDINGS AT CASE WESTERN RESERVE UNIVERSITY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1446477944.
Повний текст джерелаElibol, Ercan. "Analysis and Energy Reduction of Humanoid Robot Motions – Stand Up and Sit Down." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5682.
Повний текст джерелаYeung, Wai Yin. "Environmental concentrations, toxicology, and development of new methods for extraction and mass balance analysis of perfluorinated compounds in environmental samples /." access full-text access abstract and table of contents, 2009. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-bch-b2374960xf.pdf.
Повний текст джерела"Submitted to Department of Biology and Chemistry in partial fulfillment of the requirements for the degree of Doctor of Philosophy." Includes bibliographical references (leaves 211-239)
Fortier, Robin. "Vers un système d'information géographique du couvert nival en Estrie." Mémoire, Université de Sherbrooke, 2010. http://savoirs.usherbrooke.ca/handle/11143/2651.
Повний текст джерелаRuneskog, Henrik. "Continuous Balance Evaluation by Image Analysis of Live Video : Fall Prevention Through Pose Estimation." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297541.
Повний текст джерелаDjupinlärningstekniken Kroppshållningsestimation är ett lovande medel gällande att följa en person och identifiera dess kroppshållning. Eftersom kroppshållning och balans är två närliggande koncept, kan användning av kroppshållningsestimation appliceras till fallprevention. Genom att härleda läget för en persons tyngdpunkt och därefter läget för dess tryckcentrum, kan utvärdering en persons balans genomföras utan att använda kraftplattor eller sensorer och att enbart använda kameror. I denna studie har en kroppshållningsestimationmodell tillsammans med en fördefinierad kroppsviktfördelning använts för att extrahera läget för en persons tryckcentrum i realtid. Den föreslagna metoden använder två olika metoder för att utvinna djupseende av bilderna från kameror - stereoskopi genom användning av två RGB-kameror eller genom användning av en RGB-djupseende kamera. Det estimerade läget av tryckcentrat jämfördes med läget av samma parameter utvunnet genom användning av tryckplattan Wii Balance Board. Eftersom den föreslagna metoden var ämnad att fungera i realtid och utan hjälp av en GPU, blev valet av kroppshållningsestimationsmodellen inriktat på att maximera mjukvaruhastighet. Därför användes tre olika modeller - en mindre och snabbare modell vid namn Lightweight Pose Network, en större och mer träffsäker modell vid namn High-Resolution Network och en model som placerar sig någonstans mitt emellan de två andra modellerna gällande snabbhet och träffsäkerhet vid namn Pose Resolution Network. Den föreslagna metoden visade lovande resultat för utvinning av balansparametrar i realtid, fastän den största felfaktorn visade sig vara djupseendetekniken. Resultaten visade att användning av en mindre och snabbare kroppshållningsestimationsmodellen påvisar att hålla måttet i jämförelse med större och mer träffsäkra modeller vid användning i realtid och utan användning av externa dataprocessorer.
Boyle, Kristen E. "Ghrelin Reflects Changes in Body Size, Not Energy Availability." Ohio University / OhioLINK, 2005. http://www.ohiolink.edu/etd/view.cgi?ohiou1121358641.
Повний текст джерелаIllikainen, M. (Mirja). "Mechanisms of thermomechanical pulp refining." Doctoral thesis, University of Oulu, 2008. http://urn.fi/urn:isbn:9789514289064.
Повний текст джерелаRéveillet, Marion. "Sensibilité du bilan de masse des glaciers alpins aux variables atmosphériques et topographiques : Observations et simulations." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAU038/document.
Повний текст джерелаGlaciers naturally record hydrological and energetic information into varied climatic regions of the world, and are sensitive to small changes in their surface energy balance. The glacier surface mass balance is directly linked to the atmospheric variables which control accumulation and ablation processes. Many models, with different complexities, enable simulations of mass balance evolution, but some questions arise about the best approach to use, especially over long time periods. Based on long measurement series on four glaciers in the French Alps (GLACIOCLIM observatory), this thesis aims at studying the mass balance sensitivity to climatic variations, to identify relevant meteorological variables for modelling. Based on an empirical approach performed on each glacier, temperature was found to be the main driver of temporal ice/snow ablation variability while solar radiations strongly influence the spatial distribution of summer mass balance. However, at glacier scale, to include solar radiation in melt models does not improvethe performances and a classical degree-day model is sufficient to simulate glacier-wide mass balance.The snowpack model SURFEX-ISBA-Crocus was then used to study summer mass balance sensitivity to all surface energy balance fluxes. Results indicate good performances of the model to simulate mass balance at each stake, but it requires accurate meteorological forcing. In particular wind, generally difficult to assessby atmospheric models, appears as a key factor for an accurate ablation modelling. Our work emphasizes that both physical and empirical approaches are very efficient for ablation modeling when forced with accurate meteorological data. Yet, annual mass balances remain very sensitive to wintermass balance due to the surface albedo feedback. For this reason, simulating accumulation processes remainsas important as ablation modelling. Using GLACIOCLIM data measurements, our study failed to find relevant relationship between winter mass balance and topographical variables such as slope, aspect, elevation, due to insufficient spatio-temporal resolution. To fill this gap of measurements, we set up a dedicated field campaign to improve our understanding of the spatio-temporal variability of the snow depth distribution on Alpineglaciers. This year-round campaign was performed using LiDAR acquisitions at Col du Midi (Mont Blancmassif). Results underline the complexity of accurate accumulation measurements from DEM differences due to submergence/emergence velocities
EL-HAJJE, REFAAT Safety Science Faculty of Science UNSW. "A SIMULTANEOUS MEASUREMENT OF THE ANGULAR DISTRIBUTION, MASS AND KINETIC ENERGY OF 235U AND 232Th FISSION FRAGMENTS." Awarded by:University of New South Wales. School of Safety Science, 2000. http://handle.unsw.edu.au/1959.4/17612.
Повний текст джерелаMeesala, Vamsi Chandra. "Modeling and Analysis of a Cantilever Beam Tip Mass System." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83378.
Повний текст джерелаMaster of Science