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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
591

Machbarkeitsrecherche Optische Tieridentifikation

Heinzmann, Tobias, Heyde, Dorothée, Pache, Steffen, Deißing, Franziska, Deutsch, Maximilian 17 April 2023 (has links)
Im Rahmen eines Landesprojektes zu aktuellen Fragestellungen im Bereich der Digitalisierung in der Tierhaltung wurde das Thema der optischen Tieridentifikation in den Fokus gerückt. Mit dem Projekt sollte dargelegt werden, wie der derzeitige Forschungsstand in diesem Bereich ist. Des Weiteren wurden die rein technischen Voraussetzungen aufgezeigt, die notwendig sind, um über optische Verfahren eine eineindeutige Einzeltieridentifikation vorzunehmen. Die Veröffentlichung gibt Hinweise zu Marktrelevanz und Empfehlungen für weitere Forschungsansätze in diesem Bereich. Redaktionsschluss: 27.10.2022
592

A TECHNO-ECONOMIC FEASIBILITY STUDY OF OFFSHORE WIND-HYDROGEN PRODUCTION IN SOUTHERN SWEDEN

Hansson, Carol January 2022 (has links)
To meet the energy targets and improve the lack of power and higher prices in southern Sweden, the amount of electricity must increase, and alternative fuel sources be introduced. This thesis examines the techno-economic feasibility of offshore wind-hydrogen production in southern Sweden, depending on whether an onshore- or offshore hydrogen system is used, and how grid connection subsidies would affect this. New research and development regarding the subjects were analyzed and reviewed. A project that has currently applied for a permit in southern Sweden, Skåne Offshore Wind Park, was used as a case study where the information from the review and data from similar parks were used to determine the cost and production for the two different systems. The costs were then adjusted according to the three different subsidy scenarios: current with no subsidies, partial with sea cable and transformer costs removed, or a full subsidy scenario where only the internal grid cost remained to achieve feasible levelized costs for electricity and hydrogen based on a discount rate of 6% and a lifetime of 25 years. Finally, a sensitivity analysis was performed.   The results showed that market competitive electricity prices are only achieved with an onshore hydrogen system- and only if a full subsidy is introduced or if a best-case scenario is applied. In a worst-case scenario, no competitive electricity prices were achieved. For the offshore hydrogen system, the extra fuel system is too inefficient for electricity production. For hydrogen, prices were achieved within a reasonable price range of green hydrogen for all scenarios, where the onshore hydrogen system was 4% more advantageous. In a best-case scenario, competitive values ​​even against blue hydrogen were achieved for the offshore hydrogen systems and for the full subsidy onshore hydrogen system. For hydrogen, the offshore hydrogen system's hydrogen prices were competitive regardless of subsidies, however this system had the highest CAPEX and OPEX costs.   The results of the study underline the need for fixed conditions but also the necessity of introducing a full subsidy for the grid connection cost - or best-case scenario conditions - to encourage further offshore wind power development.
593

Feasibility of Life Cycle Assessment for Complex Medical Devices / Genomförbarhet av livscykelanalys för komplexa medicintekniska produkter

Svensson, Sofia January 2017 (has links)
The interest in environmental issues is increasing and for this reason, assessing the potential environmental impacts of a product or system is of interest. A methodology developed for this particular purpose is the life cycle assessment, also known as LCA. It is not purely of interest these aspects are investigated though, as increasing requirements on organizations also matter. The purpose of this thesis was to investigate the feasibility to implement the methodology of LCA in the aspect of complex medical devices. To do this, the framework for the methodology has been reviewed and a case study performed. The case study comprised of conducting an LCA study on the radiosurgery device Leksell Gamma Knife® IconTM.  The outcome of the investigation showed that conducting an LCA study means a wide range of aspects need to be considered and specified to a high degree. A particular issue was the data requirements, as obtaining data meeting several objectives was challenging. The modeling was also identified as a difficulty. Tools such as software and databases with predefined processes were used, though as complex medical devices can use materials not common in other fields, a lack of appropriate predefined processes hinders the feasibility. The conducted case study was able to attain valuable insights even though the study did not comply with the standards providing the framework, the ISO 14040 series. To conduct a compliant LCA study for complex medical devices, extensive resources would be required as well as the involvement of relevant parties along the supply chain. It is seen improbable to achieve a compliant study the first time a particular type of complex medical device is investigated. However, it is believed the feasibility would increase as studies are repeated, as the data quality is likely to increase. Advancements of the tools, as well as ongoing research on the environmental impacts of more materials, are other factors thought to increase the feasibility of conducting LCA studies on complex medical devices in the future. / Intresset för miljöfrågor ökar och därav finns det ett intresse att undersöka vad den potentiella miljöpåverkan är för en produkt eller ett system. En metodologi utvecklad för detta specifika syfte är livscykelanalys som även kallas LCA. Det är inte enbart utav intresse som aspekterna utreds, de ökande krav som ställs på olika aktörer spelar också roll. Syftet med detta examensarbete var att undersöka genomförbarheten av livscykelanalyser med avseende på komplexa medicintekniska produkter. Detta gjordes genom att granska regelverken för LCA samt genomförandet av en fallstudie, vilken utgjordes av en livscykelanalys på strålkniven Leksell Gamma Knife® IconTM. Resultaten av undersökningen visade att genomförandet av en livscykelanalys innebär att ett stort spann av aspekter måste beaktas och specificeras i hög grad. Ett särskilt problem var kraven på data då det var utmanande att samla in data som skulle möta flera behov. En annan identifierad svårighet var modelleringen. Verktyg användes i form av mjukvara och databaser med fördefinierade processer men då komplexa medicintekniska produkter kan bestå av material som inte är vanliga inom andra områden, var bristen på passande fördefinierade processer ett hinder för genomförbarheten. Den genomförda fallstudien gav värdefulla resultat trots att den inte var utförd helt enligt standarderna i ISO 14040 serien. För att en LCA studie för komplexa medicintekniska produkter skall möta dessa krav krävs omfattande resurser och att flera berörda parter längs försörjningskedjan involveras. Det ses därför som osannolikt att en studie som genomförs för första gången på en viss typ av komplex medicinteknisk produkt kan leva upp till regelverket. Dock så förmodas genomförbarheten öka i takt med att studier upprepas, då kvaliteten på data tros öka. Utveckling av verktygen samt pågående forskning om miljöpåverkan från olika material är andra faktorer som anses öka genomförbarheten av livscykelanalyser på komplexa medicintekniska produkter i framtiden.
594

Techno-economic Feasibility Study of a Biogas Plant for Treating Food Waste Collected from Households in Kartamantul Region, Yogyakarta

Al Naami, Adam January 2017 (has links)
This thesis presents the potential of biogas production using food waste collected from the region of Kartamantul in Yogyakarta, Indonesia. Biogas can be used for cooking and generating electricity. The study compares two different end uses or markets for utilizing the biogas in the region. The daily food waste collected in the region of Kartamantul is 120 tonnes. This corresponds to a daily biogas production of 13 087 m3. Electricity generated from biogas can replace fossil-based coal electricity while cooking biogas can substitute the common fossil fuel liquefied Petroleum Gas (LPG). The price for selling one kWh of electricity to the state owned enterprise PLN is 16.5 USD cents. The price for selling one m3 of biogas for cooking is 38.5 USD cents, which is equivalent to the available price of LPG. The study finds that the avoided emission due to the substitution of fossil-based coal electricity and cooking LPG-gas is around 64 GgCO2-eq per year. Considering the economical results for a life span of 20 years in the first utilization option Biogas for Electricity gives a net present value (NPV) of 2 MUSD while for the utilization option Biogas for Cooking gives a net present value (NPV) of 5.82 MUSD. The breakeven for Biogas for Electricity is 13.8 USD cents per kWhe while for Biogas for Cooking is 25.5 USD cents per m3-biogas. The study concludes that it is feasible to invest in AD plant in the region of Kartamantul where both markets are profitable and environmentally friendly. / Denna avhandling visar potentialen för biogasproduktion med hjälp av matavfall som samlats från regionen Kartamantul i Yogyakarta, Indonesien. Biogas kan användas för matlagning och elproduktion. Studien jämför två olika slutanvändningar eller marknader för att utnyttja biogasen i regionen. Det dagliga matavfallet som samlas i regionen Kartamantul är 120 ton. Detta motsvarar en daglig biogasproduktion på 13 087 m3. Elektricitet som genereras från biogas kan ersätta fossilbaserad koldioxid, medan tillagning av biogas kan ersätta det gemensamma fossila bränslet flytande petroleumgas (LPG). Priset för att sälja en kWh el till det statligt ägda företaget PLN är 16,5 USD cent. Priset för att sälja en m3 biogas för matlagning är 38,5 USD cent, vilket motsvarar det tillgängliga priset på LPG. Studien konstaterar att den undvikna utsläppet på grund av substitutionen av fossilbaserad kolkraft och matlagning av gasol är cirka 64 GgCO2-ekv per år. Med tanke på de ekonomiska resultaten för en livslängd på 20 år i det första utnyttjandegradet ger Biogas for Electricity ett nettopåverkande värde (NPV) på 2 MUSD medan för utnyttjandegraden Biogas for Cooking ger ett nettoförskott (NPV) på 5,82 MUSD. Breakeven för biogas för el är 13,8 USD cent per kWhe medan för Biogas for Cooking är 25,5 USD cent per m3-biogas. Studien drar slutsatsen att det är möjligt att investera i AD-anläggningar i regionen Kartamantul där båda marknaderna är lönsamma och miljövänliga.
595

Оценка эффективности инвестиционного проекта на примере «Кофейня «Yours» : магистерская диссертация / Evaluating effectiveness of investment project (Coffee Shop “Yours” as an example)

Куприянова, А. В., Kupriyanova, A. V. January 2018 (has links)
Магистерская диссертация посвящена оценке эффективности инвестиционного проекта на примере «Кофейня «Yours». Целью исследования является разработка нового инвестиционного проекта. При заложенном в расчетах уровне доходов, текущих и инвестиционных затрат, проект необходимо признать как финансово состоятельный. / Master thesis is devoted to the evaluating effectiveness of investment project. The aim of the study is a drafting the new investment project. With the level of income, current and investment costs set in the calculations, the project can be acknowledged as a successful investment project.
596

Финансово-экономическое обоснование проекта строительства комплекса для IT-компании в Сысертском городском округе : магистерская диссертация / Financial and economic feasibility study for the construction of a complex for an IT-company in Sysertsky urban district

Барейчева, М. А., Bareicheva, M. A. January 2023 (has links)
Магистерская диссертация состоит из введения, трех глав, заключения, библиографического списка и приложений. В работе рассмотрен финансово-экономический проект по созданию комплекса объектов для IT-компании на территории села Патруши (Сысертский городской округ, Свердловская область). Проанализирована территория расположения рассматриваемого земельного участка, рассмотрен мировой опыт создания объектов для IT-индустрии, сформирована концепция развития территории на основе разработанного мастер-плана. Сформирован бюджет проекта, рассчитаны показатели экономической эффективности проекта. В заключении сформулированы основные выводы и обобщены результаты исследования. / The master's thesis consists of an introduction, three chapters, a conclusion, a bibliography, and appendices. The work considers a financial and economic project to create a complex of facilities for an IT-company in the village of Patrushi (Sysert urban district, Sverdlovsk region). The location of the site has been analyzed, international experience in creating facilities for the IT-industry has been considered, a concept of territory development on the basis of the master plan has been formed. The budget of the project was formed and the indicators of economic efficiency of the project were calculated. The conclusion formulates the main conclusions and summarizes the results of the study.
597

EXPLORING WAYS TO SUPPORT PARENTS OF CHILDREN WITH DEVELOPMENTAL DISABILITIES / SUPPORTING PARENTS OF CHILDREN WITH DEVELOPMENTAL DISABILITIES

Monika Novak Pavlic January 2022 (has links)
Family-centred service (FCS), which acknowledges the importance of family engagement in therapeutic processes and focuses on needs of all family members, is increasingly being recognized as an optimal care delivery model for families of children with developmental disabilities. However, services for families are oftentimes ‘child-centric’, wherein family members are seen as partners in therapy or care delivery only, while their own or family needs are not addressed. This arises from the lack of awareness of complex and highly individual family needs by professionals with whom they interact, but also from a significant lack of services oriented toward parent-specific needs in current delivery models. This thesis aims to address this knowledge gap and provides solutions for parental support in the context of pediatric developmental rehabilitation, which might also be applicable to other settings (e.g., community, education). The objectives of this thesis were: (a) to conduct a systematic review synthesizing randomized controlled trials aiming to address parents’ physical, psychological and socioeconomic well-being; (b) to perform cross-cultural and language adaptation and proof-of-concept pilot exploration of an innovative, strengths-based support program ‘ENabling VISions And Growing Expectation’ (ENVISAGE) for parents of children with neurodevelopmental disabilities in Croatia; (c) to refine the Croatian version of the program according to the pilot study results; (d) to run the first set of ENVISAGE workshops and evaluate their impact on Croatian parents’ perception of self, their child with a disability and their family; and (e) to learn about participants’ experience with the program. The findings show that interventions aiming to improve parents’ well-being have limited but promising effectiveness on parents’ health and well-being outcomes. ENVISAGE has proven to be a comprehensive, acceptable, usable, feasible and impactful program for parents of children with developmental disabilities in Croatia. / Dissertation / Doctor of Science (PhD) / Parents raising children with developmental disabilities have unique challenges in their parenting role, which might impact their health and well-being. However, there has been very little focus on parental and family needs in the context of pediatric developmental rehabilitation. Parents are often expected to focus on their child’s issues when their own support needs are usually also significant. This thesis aimed to address this research and practice gap through: a) evaluating best quality evidence on how to support parental well-being; and b) piloting a novel ‘early intervention’ support program for parents of children with disabilities, ‘ENabling VISions And Growing Expectation’ (ENVISAGE), in a new culture and language setting, Croatia. These findings have implications for spreading awareness of innovative programs to improve well-being of parents of children with developmental disabilities in various sectors (e.g., healthcare, community).
598

Examining the Feasibility of the Nisonger Outcome Assessment Tool

Saltzman, Dana Levin 15 September 2014 (has links)
No description available.
599

Commercializing a Resin-Coated Proppant

Alkhasov, Solomon S. 29 August 2014 (has links)
No description available.
600

Computational Modeling and Analysis of Heavy Fuel Feasibility in Direct Injection Spark Ignition Engine

Moda, Sunil Udaya Simha 18 March 2011 (has links)
No description available.

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