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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.
461

Hodnocení ekonomické efektivnosti projektů dopravní infrastruktury / Economic Efficiency Evaluation of Transport Infrastructure Projects

Vojdášová, Ivona Unknown Date (has links)
The diploma thesis is focused on evaluation of the economic efficiency of investment projects of transport infrastructure in the Czech Republic. These projekcts are evaluated according to the methodological documents of the Ministry of Transport of the Czech Republic, the State Fund for Transport Infrastructure and thr Directorate of Roads and Motorways of the Czech Republic. The diploma thesis also deals with the comparison od individual methodological procedures and their influence on the resulting indicators of economic efficiency of transport infrastructure condtructions.
462

Understanding News Media Policy in Vietnam: An Economic Analysis of Government Intervention in a State-Run News Market

Nguyen, Huyen Thi Ngoc January 2020 (has links)
No description available.
463

TECHNO-ECONOMIC ANALYSIS OFRENEWABLE GAS PRODUCTION AND ELECTRICITY GENERATION FROM ORGANIC WASTE : A Feasibility Study of a Conceptual Biogas Plant in the Santander Region, Colombia

Sassersson Busadee, Nelly, Ahmed, Laura January 2023 (has links)
Strategies to harness the energy from organic waste is gaining importance on a global scale, especially in countries with large quantities of it. In this paper, a techno-economic analysisand a field study were performed to investigate the feasibility of five scenarios for a conceptual biogas facility, based on a case study from Colombia. The plant designs involved anaerobic digestion followed by different combinations of biogas upgrading, combined heat and power and/or steam methane reforming technologies and investigated four different feedstocks. The results demonstrated that the road infrastructure leading to the current proposed site is inadequate, and a new location should be found. Anaerobic digestion alone was most profitable with the shortest payback period. Organic Municipal Solid Waste and Poultry Manure produced high techno-economic potential depending on the scenario. The production of hydrogen using anaerobic digestion, steam methane reforming and combined heat and power with or without upgrading is not recommended due to the current market prices and high heat consumption. However, it can be profitable to implement green energy initiatives as a strategy to establish and lead future energy markets.
464

Contributions to the economic analysis of even-aged silviculture: From simple models to complex analyses

Halbritter, Andreas 19 August 2022 (has links)
In managed forests, the enormous complexity of an ecologic system meets a vast range of economic and other impact factors. Thus, to determine, analyze and understand economically optimal stand management is a task which has kept forest economists occupied for the past 200 years. The approach which has been followed since the days of Martin FAUSTMANN is the analysis of models which describe rather specific management scenarios using a set of clearly defined model assumptions. Unfortunately, the applicability of the findings to more general scenarios is limited. On the other side, the possibility of analyzing general management environments with single models is also limited by increasing complexity. Thus, a holistic understanding of optimal forest management is still missing. This statement also holds for the extensive field of optimal even-aged timber production, which essentially consists of only three main components, i.e., planting, thinning and final harvest. Therefore, this dissertation aims to make a contribution to further increase the general understanding of even-aged forest management. To achieve this goal three steps were taken. First, a qualitative analysis of a combined management plan including decisions on all three basic components is presented based on HALBRITTER and DEEGEN (2015). It provides a discussion of the direct and indirect dependencies between the decision variables of a rotation in a rather classical management environment. Second, three studies are presented which dissolve some of the classical model assumptions and extend the existing knowledge on even-aged forestry to relevant but more complex mangement questions. HALBRITTER (2015) includes natural regeneration and a shelter period in an even-aged system and explores the borders between the even- and uneven-aged management. Thereby, the influence of natural regeneration and the impact of several age classes were studied. HALBRITTER (2020) drops the assumption of stand homogeneity and investigates stand management under heterogeneous tree growth in which, for example, different social classes of trees are maintained. Lastly, HALBRITTER et al. (2020) extend the classical deterministic management environment in the direction of density-dependent hazard risk. This adds an additional aspect to the thinning and the rotation decision because, in this scenario, the probability of stand destruction can be controlled by thinning. As a third step, the studies above were embedded in a patchwork representing a conglomeration of models which are connected and validated by overlapping scopes. Using this approach, a wide range of different management scenarios can be covered by rather simple models. Thus, the complexity of the analysis decreases compared to single models with a more generally applicable framework and the problem of model complexity is mitigated. In addition, the inclusion of reference models with a particular focus on the management components stand establishment, thinning or rotation allows for a clear identification of the relationship between optimal stand management and the characteristics of a scenario. Applied to the qualitative analysis of the four studies above, the approach yields insights which contribute to a better understanding of even-aged forest management.:1. Introduction 2. The FAUSTMANN Framework 2.1 Model Definition 2.2 The FAUSTMANN Model 2.3 Assumptions 2.4 Basic Applications 2.4.1 The Rotation Model 2.4.2 The Thinning Model 2.4.3 The Planting Model 2.4.4 The Uneven-aged Model 3. Problem 4. Methodology 5. The Combined Model 5.1 Model 5.2 Optimal Management 5.3 Impact of Timber Price and Interest Rate 5.4 Discussion in Comparison to the Basic FAUSTMANN Applications 6. Extensions 6.1 Uneven-Aged Extension: The Double-Cohort Model 6.1.1 Even-Aged and Uneven-Aged Stands 6.1.2 Model 6.1.3 Optimal Management 6.1.4 Impact of Timber Price and Interest Rate 6.1.5 Discussion in Comparison to the Basic FAUSTMANN Applications 6.2 Heterogeneous Extension: The Heterogeneous Stand Model 6.2.1 Homogeneous and Heterogenous Stands 6.2.2 Model 6.2.3 Optimal Management 6.2.4 Impact of Timber Price and Interest Rate 6.2.5 Discussion in Comparison to the Basic FAUSTMANN Applications 6.3 Stochastic Extension: The Natural Risk Model 6.3.1 Deterministic and Stochastic Scenarios 6.3.2 Model 6.3.3 Optimal Management 6.3.4 Impact of Timber Price and Interest Rate 6.3.5 Discussion in Comparison to the Basic FAUSTMANN Applications 7. Conclusions 7.1 Optimal Management Strategy 7.1.1 Optimal Planting 7.1.2 Optimal Thinning 7.1.3 Optimal Rotation 7.2 The Patchwork Approach 7.2.1 Applicability of the Patchwork Approach 7.2.2 Limitations of the Patchwork Approach 7.2.3 Comparison to the Holistic Approach 8. Summary
465

Sustainable Energy Carrier Investments : A case study on the drywall manufacturing industry

Hallberg, Kevin, Sandström, Kevin January 2022 (has links)
Background According to the United Nations, climate change is one of the most challenging and urgent problems. To reduce emissions, various regulations have been introduced. Emissions trading (EU-ETS) and carbon dioxide tax are two economic instruments aimed at reducing greenhouse gas emissions. The industrial sector in Sweden today accounts for 31% of carbon dioxide emissions, and a common fossil energy carrier used is liquified petroleum gas (LPG). When LPG is burned, carbon dioxide is produced, contributing to climate change. By replacing LPG with a sustainable energy carrier, industries can reduce costs associated with emissions and thus increase competitiveness while lowering environmental impact. Therefore, there is a need for a framework that deals with both the economic and environmental impact that arises if alternative sustainable energy carriers replace LPG. Objectives The study’s objective is to evaluate alternative energy carriers that can phase out the use of LPG. The contribution of this study is a framework that analyzes and visualizes the economic and sustainable benefits of changing energy carriers. Methods A techno-economic model was developed by evaluating economic and sustainable indicators. A case study was conducted on a company that uses LPG in its manufacturing process. Eight different scenarios were set up where various energy carriers are used. Data concerning the different scenarios were collected. The scenarios were compared and analyzed based on the model to see which alternative energy carriers generate economic and sustainable improvements. Results The results from the case study show that all scenarios had an increased environmental performance compared to LPG. Either by reduced CO2 emissions or by being carbon dioxide neutral. From an economic perspective, only one scenario is more favorable than LPG, Bio- LPG. Bio-LPG reduces the total cost by 28.5%. Conclusions The study presents a model that can evaluate alternative energy carriers from an economic and environmental perspective. In many cases, a trade-off was discovered either being sustainable at a high cost or paying fees for emissions at a lower price. Alternative energy carriers exist with less environmental impact. Still, the technology for many of them is not sufficiently developed for large-scale production and use, which means that the cost is too high. Depending on the company's business strategy, the model can visualize the effects of a possible change of energy carrier. / Bakgrund Klimatförändringarna är ett av de mest utmanande och brådskande problemen enligt Förenta nationerna, för att minska utsläppen har olika regleringar införts. Handel med utsläppsrättigheter (EU-ETS) och koldioxidskatt är två ekonomiska styrmedel med syfte att minska växthusgasutsläppen. Industrisektorn i Sverige står idag för 31% av koldioxidutsläppen och en vanlig fossil energibärare som används är gasol. När gasol förbrännas produceras koldioxid som bidrar till klimatförändringar. Genom att byta ut gasol mot en hållbar energibärare kan industrier minska kostnader som är förknippade med utsläpp och på sådant vis öka konkurrenskraft, samtidigt som man minskar miljöpåverkan. Det finns därav ett behov av ett ramverk som behandlar både den ekonomisk och miljömässig påverkan som uppkommer om gasol byts ut mot alternativa hållbara energibärare. Syfte Syftet med studien är att utvärdera alternativa energibärare som kan fasa ut användandet utav gasol. Bidraget från denna studie är ett ramverk som analyserar och visualiserar de ekonomiska och hållbara fördelarna med att byta energibärare. Metod En tekno-ekonomisk modell utvecklades genom att utvärdera ekonomiska och hållbara indikatorer. En fallstudie utfördes på ett företag som använder gasol i sin tillverkningsprocess. Åtta olika scenarier sattes upp där olika energibärare används. Data rörande de olika scenarierna samlades in. Scenarierna jämfördes och analyserades utifrån modellen för att se vilka alternativa energibärare som genererar ekonomiska och hållbara förbättringar. Resultat Resultaten från fallstudien visar att alla scenarier hade en ökad miljöprestanda jämfört med gasol. Antingen genom minskade CO2-utsläpp eller genom att vara koldioxidneutrala. Ur ett ekonomiskt perspektiv är endast ett scenario mer gynnsamt än gasol, biogasol. Biogasol minskar den totala kostnaden med 28.5 %. Slutsatser Studien presenterar en modell som kan användas för att utvärdera alternativa energibärare utifrån ett ekonomiskt och hållbart perspektiv. En avvägning upptäcktes i många fall, antingen vara hållbar till hög kostnad eller betala avgifter för utsläpp till en lägre kostnad. Alternativa energibärare existerar som har mindre miljöpåverkan, men teknologin för många utav dem är ej tillräckligt utvecklad för storskalig produktion och användning vilket medför att kostanden är för hög. Beroende på vilken affärsstrategi företag har kan modellen visualisera effekterna vid ett eventuellt byte av energibärare.
466

Electrification of marinas forcharging of electric recreationalboats : case study of Stockholm / Elektrifiering av småbåtshamnar för laddning av elektriska fritidsbåtar : fallstudie av Stockholm

Oyediran, Damilare January 2023 (has links)
Decarbonization of the marine transportation sector is contributing to the growth of electric recreational boats. The growth of electric recreational boats also means an increase in charging demand to meet the power needs of electric boats to address the problem of range anxiety. To meet the charging demand of electric boat owners, electrification of existing public boat marinas is necessary. The objective of this study is to determine the optimal number of fast and slow chargers to meet charging demand of electric boats at public boat marinas. This study proposes a mathematical model formulated using mixed integer linear optimization programming (MILP). The model is validated using 9 public marinas owned by the city of Stockholm; the technical and economic data of one of the existing electric boats in the Swedish market, electric chargers; and hourly availability profile of boats at the marinas considered. The economic analysis was carried out to determine the year each station will break-even financially. The result obtained is the number of slow chargers and fast chargers to meet the charging demand of all electric boats; and the power drawn per charger type per station. Due to availability profile and charging demand of the boats, the model optimized for higher number of fast chargers compared to slow chargers at some of the stations; and at some of the stations, higher number of slow chargers compared to fast chargers; and equal number of slow and fast chargers at some of the stations. Also, maximum power is drawn between 01:00 and 03:00 at midnight and between 13:00 and 15:00 during the day, and this was as a result of the lowest average electricity price within this time period. In addition, the economic analysis shows that all the stations are financially viable and break-even within the first seven years of their lifetime. The result obtained shows that the number of electric chargers (slow and fast) generated by the model meet the charging demands of all the boats at each of the stations optimally. / Avkarbonisering av sjötransportsektorn bidrar till tillväxten av elektriska fritidsbåtar. Tillväxten av elektriska fritidsbåtar innebär också en ökning av laddningsefterfrågan för att möta elbåtarnas kraftbehov för att lösa problemet med räckviddsångest. För att möta laddbehovet från elbåtsägare är elektrifiering av befintliga offentliga båthamnar nödvändig. Syftet med denna studie är att fastställa det optimala antalet snabba och långsamma laddare för att möta laddningsbehovet för elbåtar vid offentliga båthamnar. Denna studie föreslår en matematisk modell formulerad med hjälp av blandad heltals linjär optimeringsprogrammering (MILP). Modellen är validerad med 9 offentliga småbåtshamnar som ägs av Stockholms stad; tekniska och ekonomiska data för en av de befintliga elbåtarna på den svenska marknaden, elektriska laddare; och timvis tillgänglighetsprofil för båtar vid de övervägda marinorna. Den ekonomiska analysen genomfördes för att fastställa vilket år varje station kommer att nå ekonomiskt nollresultat. Resultatet som erhålls är antalet långsamma laddare och snabbladdare för att möta laddningsbehovet för alla elektriska båtar; och ström som dras per laddartyp per station. På grund av båtarnas tillgänglighetsprofil och laddningsbehov, optimerade modellen för fler snabbladdare jämfört med långsamma laddare på några av stationerna; och på några av stationerna, högre antal långsamma laddare jämfört med snabbladdare; och lika många långsamma och snabba laddare på några av stationerna. Dessutom dras maximal effekt mellan 01:00 och 03:00 vid midnatt och mellan 13:00 och 15:00 under dagen, och detta var ett resultat av det lägsta genomsnittliga elpriset inom denna tidsperiod. Dessutom visar den ekonomiska analysen att alla stationer är ekonomiskt bärkraftiga och nollresultat inom de första sju åren av sin livstid. Resultatet som erhållits visar att antalet elektriska laddare (långsamma och snabba) som genereras av modellen uppfyller laddningskraven för alla båtar vid var och en av stationerna.
467

Chemical Manufacturing in Developing Markets: Analysis and Cost Estimations

Wasiu Peter Oladipupo (8669685) 28 July 2023 (has links)
<p>Developed countries have built wealth and prosperity on the strength of their manufacturing sectors, with China’s success story of lifting 800 million people out of extreme poverty in 30 years a sterling and most recent example of how manufacturing-led industrialization can foster economic development. Sub-Saharan Africa, unfortunately, find itself today in a similar situation as China did in 1990, with over 50% of the world’s desperately poor 719 million people living in the region. But unlike China, Sub-Saharan Africa is faced with the additional challenge of overcoming poverty in a world with stricter constraints to global trade and climate change limitations to modern-day industrialization. Compounding the challenges further is the region's limited know-how and human capital — a consequence of years of underdevelopment, creating a classic chicken and egg dilemma where the lack of industrialization perpetuates the dearth of know-how and human capital, and vice versa.</p><p>Considering these challenges, we investigate how chemical manufacturing and what chemical manufacturing approaches can be leveraged to effectively drive industrialization and economic development in Sub-Saharan Africa. We propose chemicals manufacturing using prefabricated modules – which are constructed offsite in places with available human capital and transported to be assembled in places where they are needed – as a flexible and needed approach. However, Economy of Scale, which generally favors large-scale chemical manufacturing, poses as a major constraint to such modularization approach, especially given the presently small serviceable market sizes in Sub-Saharan Africa due to low purchasing power parity. We thus utilize mathematical modeling techniques to determine and establish scenarios for economic viability of the proposed approach, providing modeling frameworks and introducing measures for further studies in the process. We also provide and analyze exemplary flowsheets synthesized for a net-zero carbon emissions chemical manufacturing paradigm in the region.</p><p>This work concludes with a prefeasibility study of a chemical manufacturing project in Nigeria, as part of the author’s quest to build prefabricated modular plants across Africa. <i>Modular plants are attractive as they can be tuned to market demand of a developing market and region that needs them, putting less capital at risk.</i></p><p>This thesis is intended to be a vanguard of potential solutions to the complex challenges to industrialization in Sub-Saharan Africa. It endeavors to pave the way for addressing these issues through chemical manufacturing, offering valuable insights for sustainable progress.</p>
468

[pt] AVALIAÇÃO TÉCNICA, ECONÔMICA E AMBIENTAL GEORREFERENCIADA DE SISTEMAS FOTOVOLTAICOS / [en] TECHNICAL, ECONOMIC AND ENVIRONMENTAL GEOREFERENCED ASSESSMENT OF PHOTOVOLTAIC SYSTEMS

JOAO HENRIQUE PAULINO DE AZEVEDO 16 November 2020 (has links)
[pt] Com a necessidade de uma maior diversificação da matriz energética mundial e a inevitabilidade de investimento em fontes de energia limpa, a energia solar fotovoltaica tem se mostrado uma fonte energética promissora. Seu crescimento hoje é exponencial e se revela cada vez mais presente na matriz energética da maioria dos países. No Brasil, já se vê um mercado fotovoltaico sólido com geração de milhares de empregos e investimentos de bilhões de reais. Sua intermitência e imprevisibilidade é razão de grande pesquisa, no intuito de obter dados confiáveis que estimam a geração de um sistema solar fotovoltaico ao longo de seu ciclo de vida. Sendo assim, este trabalho conduz uma extensa revisão bibliográfica, passando pelos fundamentos básicos, até o desenvolvimento de um algorítmico robusto, integrando modelos matemáticos presentes na literatura. Os dados de radiação solar global, velocidade do vento e temperatura, são obtidos de mapas gerados por 39 estações solarimétricas dentro e próximas das fronteiras do estado do Rio de Janeiro. O simulador, também conta com uma extensa base de dados atual de módulos solares e inversores. Após uma série de validações e análises de sensibilidade, apresentou resultados satisfatórios quanto a sua capacidade de previsão. Dessa forma, é possível simular e dimensionar sistemas solares fotovoltaicos, calculando indicadores e fluxo de caixa detalhado que refletem a viabilidade de um determinado projeto. Além disso, o simulador tem a capacidade de gerar mapas georreferencidos que contribuem para uma avaliação técnica, economia e ambiental, de uma região a ser analisada. Com isso, se torna uma ferramenta fundamental para investidores do setor. / [en] With the need for greater diversification of the world energy matrix and the inevitability of investment in clean energy sources, photovoltaic solar energy has proved to be a promising energy source. Its growth today is exponential and is increasingly present in the energy matrix of most countries. In Brazil, there is already a solid photovoltaic market with the generation of thousands of jobs and investments of billions of reais. Its intermittency and unpredictability is the reason for great research, in order to obtain reliable data that estimate the generation of a photovoltaic solar system throughout its life cycle. Therefore, this work conducts an extensive bibliographic review, going through the basic foundations, until the development of a robust algorithm, integrating mathematical models present in the literature. Global solar radiation, wind speed and temperature data are obtained from maps generated by 39 solarimetric stations within and near the borders of the state of Rio de Janeiro. The simulation tool also has an extensive current database of solar modules and inverters. After a series of validations and sensitivity analyzes, it presented satisfactory results in terms of its forecasting capacity. In this way, it is possible to simulate and size solar photovoltaic systems, calculating indicators and detailed cash flow that reflect the viability of a given project. In addition, the simulation tool has the ability to generate georeferenced maps that contribute to a technical, economic and environmental assessment of a region to be analyzed. As a result, it becomes a fundamental tool for investors in the sector.
469

Techno-economic Study of Hydrogen as a Heavy-duty Truck Fuel : A Case Study on the Transport Corridor Oslo – Trondheim

Danebergs, Janis January 2019 (has links)
Norway has already an almost emission-free power production and its sales of zero-emission light-duty vehicles surpassed 30% in 2018; a natural next challenge is to identify ways to reduce emissions of heavyduty vehicles. In this work the possibilities to deploy Fuel Cell Electric Trucks (FCET) on the route Oslo-Trondheim are analyzed by doing a techno-economic analysis. The literature study identified that in average 932 kton goods where transported between the cities. The preferred road choice goes through Østerdalen and that an average load for a long-distance truck is 16 tons. The methodology used in the study is based on cost curves for both truck and infrastructure, and a case study with various scenarios is evaluated to find a profitable business case for both an FCET fleet and its infrastructure. The cost curves for trucks are based on total cost of ownership (TCO) as a function of hydrogen price, while the levelized cost of hydrogen (LCOH) is used to present the cost of infrastructure. An analysis was made to identify the trucks component sizes and a FCET for this route would require an onboard hydrogen storage of 46 kg, a fuel cell stack with a nominal power of 200 kW, a battery of 100 kWh (min SOC 22%), and an electric motor with a rated power of 402 kW. TCO was calculated both for an FCET based on the dimensioned components and a biodiesel truck. The results show that an FCET purchased in 2020 can be competitive with biodiesel with a hydrogen price of 38.6 NOK/kgH2. While the hydrogen price can increase to 71.8 NOK/ kgH2 if the FCET is purchased in 2030. To identify the most suitable infrastructure, four different designs of hydrogen refueling stations (HRS) were compared. Furthermore, hydrogen production units (HPUs) with both alkaline or PEM type water electrolyzer were compared. The analysis in this study showed that the most cost competitive option was a 350-bar HRS without cooling, which only can serve type III onboard storage tanks. A HPU with alkaline electrolyzer was the most price competitive alternative. In case each HRS is refueling more than 7 FCETs per day, an HPU in direct connection to HRS is the preferred infrastructure setup. Three HRS are required along the route to ensure a minimum service level for the FCETs. When the TCO of the fuel cell truck and LCOH of the hydrogen infrastructure were compared for a 2020 scenario, no feasible solution was identified. The cost of installing three HRS in 2020, serving a fleet of 14-24 trucks, would cost 16.0 – 17.6 million NOK/year more than a fleet based on biodiesel trucks. In a future scenario, where both the FCET and infrastructure costs decrease due to expected learning curves, a business case can be found if at least 5 FCETs were refueling at each HRS on daily basis, which corresponds to a total fleet of approx. 24 FCETs. Finally, a set of clear recommendations on how to improve the techno-economic analysis in future studies are provided. Both by identifying areas lacking sufficient documentation and by providing steps how the tecno-economic model could be enhanced. / Norge har redan en nästintill utsläppsfri elproduktion och nollutsläppsbilar stod för mer än 30% av nybilsförsäljningen under år 2018. En naturlig nästa utmaning är att finna sätt att minska utsläpp från lastbilar. I detta examensarbete analyseras möjligheterna att introducera bränslecellslastbilar (FCET) efter dess engelska förkortning) på sträckan Oslo - Trondheim genom att göra en teknisk-ekonomisk bedömning. Litteraturstudien visade att i genomsnitt 932 kton gods fraktas mellan städerna, att vägen genom Østerdalen är att föredra och att genomsnittlig last för en långtradare är 16 ton. Arbetets metod bygger på att identifiera kostnadskurvor för både lastbilar och infrastruktur. Dessa kurvor kombineras i olika scenarier för att finna omständigheter där både en FCET-flotta och dess infrastruktur är lönsamma. Kostnadskurvorna för lastbilar baseras på den totala ägandekostnaden (TCO) efter dess engelska förkortning) som en funktion av vätgaspriset, medan den utjämnade kostnaden för vätgas (LCOH) efter dess engelska förkortning) används för att presentera kostnaden för infrastruktur. En analys gjordes för att finna passande storlek på FCET drivlina. För den specifika sträckan krävs en hydrogentank på 46 kg, en bränslecellstack med nominell effekt på 200 kW, ett batteri på 100 kWh (min SOC 22%) och en elmotor med nominell effekt på 402 kW. TCO beräknades både för en FCET baserat på de dimensionerade komponenterna och en lastbil som går på biodiesel. En FCET som köps 2020 blir konkurrenskraftig om vätgaspriset är 38,6 NOK/kgH2, medan vätgaspriset kan öka till 71,8 NOK/kgH2 om FCET köps 2030. Skillnaden är baserad på en framtida prisnedgång för FCET. För att finna den mest lämpliga lösningen på infrastruktur; analyserades fyra olika utformningar av vätgaspåfyllningsstationer (HRS). I tillägg jämfördes vätgasproduktionsenheter (HPU) baserat på antingen alkalisk eller PEM-typ av elektrolysator. Resultaten visade at en 350 bar HRS utan kylning, som endast kan fylla typ III lagringstankar, som det billigaste alternativet. Den alkaliska elektrolysatorn kunde producera vätgas för något lägre kostnad. Det billigaste alternativet för infrastruktur av de olika framtagna scenarios var att placera HPU bredvid HRS om minst 7 FCET tankar dagligen på varje station. Minst 3 HRS krävs längs rutten för att tillhandahålla en minsta servicenivå för FCET. När TCO för bränslecellslastbil och LCOH för infrastruktur jämfördes för ett 2020-scenario så fanns det ingen lönsam lösning. Kostnaden för att installera 3 HRS år 2020 som betjänar en lastbilflotta mellan 14-24 lastbilar skulle kosta 16,0 - 17,6 miljoner NOK/år mer än en lastbilsflotta som går på biodiesel. I ett framtida scenario där både FCET- och infrastrukturkostnaderna minskar på grund av större produktionsvolymer så kan vätgassatsning bli lönsam om minst 5 FCET tankar dagligen på varje HRS. Det motsvarar en lastbilsflotta på omkring 24 lastbilar för hela rutten. Till slut finns en rad klara rekommendationer om hur den tekno-ekonomiska analysen kan förbättras. Det upptäcktes både områden med otillräcklig dokumentation och summerades hur den teknoekonomiska modellen kan förbättras.
470

Развитие методики анализа эффективности управления финансовыми ресурсами предприятий IT- сектора : магистерская диссертация / Development of the technique of analysis of the efficiency of managing the financial resources of IT-enterprises

Азнабаева, Г. Р., Aznabaeva, G. R. January 2019 (has links)
Актуальность темы подтверждается высоким спросом на финансовые ресурсы, и специализированные финансовые компании готовы его удовлетворить, предлагая новые формы финансирования. В то же время руководители стали задумываться не только о том, как привлечь капитал, но и о том, как его сэкономить и преумножить. Целесообразность изучения управления финансовых ресурсов предприятий IT-сектора обусловлена еще и тем, что последние, как материальные носители финансовых отношений, опосредуют практически всю производственно-хозяйственную деятельность коммерческой организации, а их применение основано на знании экономической природы и законов функционирования, что позволяет наиболее эффективно достигать поставленных целей и реализовывать функциональное назначение финансовых ресурсов хозяйствующего субъекта. Целью исследования является развитие методики анализа управления финансовыми ресурсами предприятий IT сектора. Для достижения вышеуказанной цели поставлены следующие задачи: изучить теоретические аспекты управления финансовыми ресурсами предприятий IT сектора; провести анализ применяемых методик управления финансовыми ресурсами и разработать рекомендации по оптимизации методики управления финансовыми ресурсами предприятий IT-сектора; внедрить методику управления финансовыми ресурсами в деятельность предприятия IT сектора и оценить эффективность данной методики. Объект исследования - предприятия IT-сектора. Предмет исследования - методики управления финансовыми ресурсами предприятий. / The relevance of the topic is confirmed by the high demand for financial resources, and specialized financial companies are ready to satisfy it by offering new forms of financing. At the same time, leaders began to think not only about how to raise capital, but also about how to save and increase it. The feasibility of studying the management of financial resources of enterprises of the IT sector is also due to the fact that the latter, as material carriers of financial relations, mediate almost all production and economic activities of a commercial organization, and their application is based on knowledge of the economic nature and laws of functioning, which allows to achieve the most efficient set goals and implement the functional purpose of financial resources of an economic entity. The aim of the study is to develop a methodology for analyzing the management of financial resources of enterprises in the IT sector. To achieve the above goal, the following tasks: to study the theoretical aspects of financial management of enterprises of the IT sector; to analyze the applied methods of managing financial resources and develop recommendations for optimizing the methods of managing financial resources of enterprises in the IT sector; introduce a methodology for managing financial resources in the activities of an enterprise in the IT sector and assess the effectiveness of this methodology. The object of study is the IT-sector enterprises. The subject of the study - methods of management of financial resources of enterprises.

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