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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.
21

An energy return on investment for a geothermal power plant on the Texas Gulf Coast

Kampa, Kyle Benjamin 25 October 2013 (has links)
This thesis examines the energy return on investment (EROI) of a model 3 MW hybrid gas-geothermal plant on the Texas Gulf Coast. The model plant uses a design similar to the DOE Pleasant Bayou No. 2 test geothermal plant, and uses a gas engine to harness entrained methane and an Organic Rankine Cycle turbine to harness thermal energy from hot brines. The indirect energy cost was calculated using the Carnegie Mellon University Economic Input-Output Life Environmental Life Cycle Analysis (EIO-LCA) model. The EROI of the plant using the 1997 EIO-LCA energy data is 12.40, and the EROI of the plant using 2002 EIO-LCA energy data is 14.18. Sensitivity analysis was run to determine how the plant parameters affect the EROI. A literature review of the EROI of different power sources shows that the EROI of the hybrid geothermal plant is greater than the EROI of flash steam geothermal and solar, but is lower than the EROI of dry steam geothermal, wind power, nuclear, coal, gas, and hydroelectric plants. An analysis of the EROI to financial return on investment (FROI) shows that the FROI for a hybrid geothermal plant could be competitive with wind and solar as a viable renewable resource in the Texas electricity market. / text
22

Constraints on algal biofuel production

Beal, Colin McCartney 31 May 2011 (has links)
The aspiration for producing algal biofuel is motivated by the desire to replace conventional petroleum fuels, produce fuels domestically, and reduce greenhouse gas emissions. Although, in theory, algae have the potential to produce a large amount of petroleum fuel substitutes and capture carbon emissions, in practice, profitable algal biofuel production has proven quite challenging. This dissertation characterizes the production pathways for producing petroleum fuel substitutes from algae and evaluates constraints on algal biofuel production. Chapter 8 provides a summary of the entire dissertation. The first chapter provides a framework for reporting the production of renewable diesel from algae in a consistent way by using data that are specific and by presenting information with relevant metrics. The second chapter presents a review of analytical tools (i.e., microscopy, spectroscopy, and chromatography) that can be used to analyze the structure and composition of intermediate products in an algal biofuel production pathway. In chapters 3 through 6, the energy return on investment, water intensity, and financial return on investment are presented for three cases: 1) an Experimental Case in which data were measured during five batches of algal biocrude production with a combined processed volume of about 7600 L, 2) a hypothetical Reduced Case that assumes the same energy output as the Experimental Case, with reduced energy and material inputs, and 3) a Highly Productive Case that assumes higher energy outputs than the Experimental Case, with reduced energy and material inputs, similar to the Reduced Case. For all three cases, the second-order energy return on investment was determined to be significantly less than 1, which means that all three cases are energy negative. The water intensity (consumption and withdrawal) for all cases was determined to be much greater than that of conventional petroleum fuels and biofuels produced from non-irrigated crops. The financial return on investment was also found to be significantly less than 1 for all cases, indicating production would be unprofitable. Additionally, it was determined that large-scale algal biofuel production would be constrained by the availability of critical energy and material inputs (e.g., nitrogen and carbon dioxide). The final part of this dissertation presents a first-principles thermodynamic analysis that represents an initial attempt at characterizing the thermodynamic limits for algal biofuel production. In that analysis, the energy, entropy, and exergy is calculated for each intermediate product in the algal biofuel production pathway considered here. Based on the results presented in this body of work, game-changing technology and biotechnology developments are needed for sustainable and profitable algal biofuel production. / text
23

Tidsvinster med automatiserade regressionstester

Ström, Marcus, Kjessler, Oskar January 2022 (has links)
Denna studie undersöker tidsvinsterna med en investeringen av automatiserade regressionstester i förhållande till manuellt genomförande. Syftet med detta är att skapa ett beslutsunderlag av ROI och break-even beräkningar med avsikten att minska osäkerheten ifall investeringen kommer resultera i en tidsvinst under systemets livslängd samt hur stora dessa vinster kan bli. För att undersöka detta har automatiska regressionstester utvecklats, där en mätning av tidsåtgången för detta användes som den investerade tiden. De automatiska testernas tid för genomförandet av studiens testfall jämfördes med den manuella motsvarigheten. Detta har tillsammans med empiriskt material från intervjuer stått som grund för ROI och break-even beräkningar gällande investeringen av automatiska regressionstester. Det empiriska materialet bidrog till beräkningarna med parametrarna testfrekvens, testmängd och livslängd. Till skillnad från tidigare forskning genomför studien beräkningar med flera testfrekvenser, vilket resulterade i att även vid en relativt låg testfrekvens har automatiska regressionstester goda förutsättningar för ett positivt ROI. Vid en medel till hög testfrekvens kunde break-even punkten uppnås inom ett år med möjligheter för stora tidsvinster. Det empiriska materialet har även påvisat att uppstartsfasen, systemtypen, testfallens komplexitet och återanvändning är faktorer som kan påverka tidsvinsterna. / This study examines the time savings of an investment in automated regression tests relative to a manual approach. The purpose of this is to produce an underlay for decision making consisting of ROI and break-even calculations which has the intention of reducing uncertainty in case the investment will result in time savings within the systems life span as well as how big these savings can become. To examine this, automated regression tests have been developed where time spent was measured to be used as the invested time. The time it took for the automated tests to execute the studies test cases were compared with the manual counterpart. This has, together with the empirical material from the interviews, formed the basis for ROI and break-even calculations regarding the investment of automated regression tests. The empirical material contributed to the calculations with parameters for test frequency, test amount and life span. Unlike previous research, this study uses calculations with a higher amount of test frequencies which showed that even with a relatively low test frequency, automated regression tests have good opportunities for a positive ROI. With a medium to high test frequency, the break-even point was reached within one year with possibilities for great time savings. The empirical material has also shown that the start-up phase, system type, test case complexity and reusability are factors that can affect the time savings.
24

<em>ROI -</em>  <em>Effekten av kompetensutveckling inom IT-området </em> : <em> </em>

Kraft, Jakob January 2010 (has links)
<p><strong>Syfte:</strong> Det är idag få större investeringar som företag gör utan att göra någon form av investeringskalkylering. Därför är det ett problem att det idag inte finns något enkelt sätt att kalkylera på en investering i kompetensutveckling inom IT-området. Studien undersöker därför:</p><ul><li>Om det på ett trovärdigt sätt är möjligt att mäta ROI (Return on Investment) på en sådan investering?</li><li>Hur en sådan mätning genomförs?</li><li>Är det i så fall möjligt standardisera sättet att mäta?</li></ul><p>Förutom ROI beräknas återbetalningstiden (Pay-Back) för respektive grupp: IT-användare, IT-tekniker samt systemutvecklare.</p><p><strong>Metod:</strong> Studien har genomförts som en kvantitativ studie (webbenkätundersökning). ROI har beräknats och övriga svar verbalt diskuterats. Data har även presenterats i diagramform.</p><p><strong>Resultat & slutsats:</strong> ROI är möjligt att beräkna för denna typ av investeringar och för tidsperioden ett år beräknats ROI baserat på medelvärdet till 87 % för IT-användare, 67 % för systemutvecklare och 41 % för IT-tekniker. Detta motsvarar en genomsnittlig återbetalningstid på 0,53 år för IT-användare, 0,60 år för systemutvecklare och 0,71 år för IT-tekniker. Spridningen i ROI och återbetalningstid för olika grupperna beror på skillnader i enkätsvar samt skillnad i investeringsstorlek. Om ROI beräknas på medianen istället för medelvärdet blir ROI lägre. Det finns osäkerhetsfaktorer som inte går att ta hänsyn till i denna typ av generella beräkningar.</p><p><strong>Förslag till fortsatt forskning:</strong> Upprepning av studien samt en jämförande studie där datainsamling sker på annat sätt skulle vara intressant. Denna studie har endast samlat in data på ett sätt.</p><p><strong>Uppsatsens bidrag:</strong> Uppsatsen bör vara intressant för organisationer som arbetar med kompetensutveckling samt enskilda individer.</p> / <p><strong>Aim:</strong> There are currently few investments that firms do without making any investment calculation. Det därför är ett problem att det idag inte finns något enkelt sätt att kalkylera på en investering i <em>kompetensutveckling inom IT-området</em> . It’s therefore a problem that there is no simple way to calculate on an investment in <em>skills development in the IT field.</em> Studien undersöker därför: The study is examining if:</p><ul><li>There is a credible way to measure ROI (Return on Investment) on such an investment?</li><li>How is it done? </li><li>Is it possible to standardize the way to measure?</li></ul><p>In addition to ROI estimated Pay-Back are calculated for each group: IT-users, IT-professionals and system developers.</p><p><strong>Method:</strong> The study was conducted as a quantitative study (web survey). ROI was calculated, and other verbal responses discussed. Data are also presented in graph form.</p><p><strong>Result & Conclusions: </strong>ROI is possible to calculate for this type of investment and for the time period of one year ROI is calculated to 87% of IT users, 67% for system designers and 41% of IT professionals. The Pay-Back time is calculated to 0,53 years for IT users, 0,60 years for system designers and 0,71 years for IT professionals. The difference of ROI and Pay-Back for different groups is due to differences in survey responses and the difference in investment size. If ROI is calculated on the median instead of average ROI is lower. There are uncertainties that can not be taken into account in this type of general computing.</p><p><strong>Suggestions for future research: </strong>Repetition of the study together with a comparative study with data collection by other means. Denna studie har endast samlat in data på ett sätt.</p><p><strong>Contribution of the thesis: </strong>The essay should be interesting for organizations working on skills development.</p>
25

ROI -  Effekten av kompetensutveckling inom IT-området :

Kraft, Jakob January 2010 (has links)
Syfte: Det är idag få större investeringar som företag gör utan att göra någon form av investeringskalkylering. Därför är det ett problem att det idag inte finns något enkelt sätt att kalkylera på en investering i kompetensutveckling inom IT-området. Studien undersöker därför: Om det på ett trovärdigt sätt är möjligt att mäta ROI (Return on Investment) på en sådan investering? Hur en sådan mätning genomförs? Är det i så fall möjligt standardisera sättet att mäta? Förutom ROI beräknas återbetalningstiden (Pay-Back) för respektive grupp: IT-användare, IT-tekniker samt systemutvecklare. Metod: Studien har genomförts som en kvantitativ studie (webbenkätundersökning). ROI har beräknats och övriga svar verbalt diskuterats. Data har även presenterats i diagramform. Resultat &amp; slutsats: ROI är möjligt att beräkna för denna typ av investeringar och för tidsperioden ett år beräknats ROI baserat på medelvärdet till 87 % för IT-användare, 67 % för systemutvecklare och 41 % för IT-tekniker. Detta motsvarar en genomsnittlig återbetalningstid på 0,53 år för IT-användare, 0,60 år för systemutvecklare och 0,71 år för IT-tekniker. Spridningen i ROI och återbetalningstid för olika grupperna beror på skillnader i enkätsvar samt skillnad i investeringsstorlek. Om ROI beräknas på medianen istället för medelvärdet blir ROI lägre. Det finns osäkerhetsfaktorer som inte går att ta hänsyn till i denna typ av generella beräkningar. Förslag till fortsatt forskning: Upprepning av studien samt en jämförande studie där datainsamling sker på annat sätt skulle vara intressant. Denna studie har endast samlat in data på ett sätt. Uppsatsens bidrag: Uppsatsen bör vara intressant för organisationer som arbetar med kompetensutveckling samt enskilda individer. / Aim: There are currently few investments that firms do without making any investment calculation. Det därför är ett problem att det idag inte finns något enkelt sätt att kalkylera på en investering i kompetensutveckling inom IT-området . It’s therefore a problem that there is no simple way to calculate on an investment in skills development in the IT field. Studien undersöker därför: The study is examining if: There is a credible way to measure ROI (Return on Investment) on such an investment? How is it done? Is it possible to standardize the way to measure? In addition to ROI estimated Pay-Back are calculated for each group: IT-users, IT-professionals and system developers. Method: The study was conducted as a quantitative study (web survey). ROI was calculated, and other verbal responses discussed. Data are also presented in graph form. Result &amp; Conclusions: ROI is possible to calculate for this type of investment and for the time period of one year ROI is calculated to 87% of IT users, 67% for system designers and 41% of IT professionals. The Pay-Back time is calculated to 0,53 years for IT users, 0,60 years for system designers and 0,71 years for IT professionals. The difference of ROI and Pay-Back for different groups is due to differences in survey responses and the difference in investment size. If ROI is calculated on the median instead of average ROI is lower. There are uncertainties that can not be taken into account in this type of general computing. Suggestions for future research: Repetition of the study together with a comparative study with data collection by other means. Denna studie har endast samlat in data på ett sätt. Contribution of the thesis: The essay should be interesting for organizations working on skills development.
26

Utvärdering av personalutbildning : En studie om organisationers utvärdering av utbildningsprogram / Evaluation of training and development programs : A study of organizations evaluation of training and development programs

Gunnarsson, Eric, Högberg, Henrik January 2015 (has links)
This study examines how and why organizations evaluate training and development within the organizations. The study has a qualitative approach based on semi-structured interviews, with office and organization development managers. The purpose of the study is to contribute with knowledge about how three large Swedish organizations evaluates training and development programs for staff members. Another purpose is to describe why the organizations evaluate training and development programs and to research if there is a further need to develop the organization evaluation methods. Therefore the research questions are Why and how do organizations evaluate training programs? What further need is there to develop organizations evaluation methods? The conclusion of this study shows that evaluation of the training and development programs are not a high priority among the selected organizations. Although the organizations believe that evaluation on training and development programs may exhibit legitimacy to their customers and improve future training and development programs, the selected organization chooses to focus more on developing and implementing the training programs. This results in difficulties for the organization to comprehend exactly how programs affect the organizations. Therefor proper evaluations methods could help the selected organizations to create more profitable programs.
27

Return and risk analysis in multinational firms /

Mayr, Dominik Stephan, January 2008 (has links)
St. Gallen, Univ., Diss., 2007.
28

Vilka faktorer påverkar framgången i CRM-satsningar / What factors influence the success of CRM initiatives

Sandström, Mattias, Lundberg, Ted January 2015 (has links)
This study is intended to identify which factors that influence the success of initiatives in Customer Relationship Management, usually abbreviated as CRM. In the course of this study we have been in contact with forty-two companies operating in Sweden within eleven different sectors in order to find out how they operate regarding CRM initiatives, particularly initiatives within marketing and promotions.  Against the data collected during the study it was concluded that the companies working with CRM believed that the CRM initiatives resulted in higher profitability and created more loyal customers. At the same time it was evident that the companies had different views on CRM as a method and its benefits. The majority of the companies could not present any tangible results from CRM-initiatives. It was also revealed that decisions regarding CRM initiatives were based on subjective assessments and without theoretical foundation. Based on the data collected nine factors were identified to affect the success of CRM initiatives. By placing the identified factors in a theoretical context a model could be developed which demonstrates the complexity that needs to be considered when applying CRM. Our hope is that the developed model can be used by companies before deciding on new investments in CRM initiatives or when evaluating existing initiatives. Future studies will have to show if this work contributed to a better understanding of CRM initiatives potential and impact. / Detta arbete söker identifiera vilka faktorer som påverkar framgången i ett företags satsning på Customer Relationship Management, vanligtvis förkortat som CRM. I samband med arbetet har vi varit i kontakt med fyrtiotvå företag verksamma i Sverige inom elva branscher för att ta reda hur de arbetar med CRM inom marknadsföring och utformning av kampanjer till kunder. Mot bakgrund av datainsamlingen kunde det konstateras att tron på CRM som verktyg för att nå en högre lönsamhet och skapa lojalare kunder var stor hos företagen. Samtidigt framkom en bild av att företagen hade väldigt olika syn på hur CRM ska användas och dess fördelar. Majoriteten av företagen kunde inte visa vilka konkreta resultat CRM-satsningar gett. Beslut fattades utifrån subjektiva värderingar och utan teoretisk förankring. Utifrån resultaten av datainsamlingen kunde nio olika faktorer identifieras vilka påverkar CRM-satsningars framgång. Genom att placera de identifierade faktorerna i en teoretisk kontext kunde en modell utarbetas vilken påvisar komplexiteten som måste beaktas vid användning av CRM. Vår förhoppning är att den framtagna modellen kan användas inför beslut om nya investeringar i CRM-lösningar eller för att utvärdera befintliga investeringar. Framtida studier får visa om detta arbete bidragit till en ökad förståelse om CRM:s potential och genomslagskraft.
29

Analysing higher-value wildlife as an investment alternative / Gysbert Johannes van Wyk

Van Wyk, Gysbert Johannes January 2015 (has links)
Recent developments in the breeding of higher-value wildlife have seen the emergence of an alternative investment opportunity being offered to potential investors. Through this opportunity, investors can enter a lucrative market which has proven to date to be a highly profitable alternative, generating even higher than above average returns. The objective of this study can be summarized as three-fold: to determine whether higher-value wildlife can be considered as an investment alternative, to contextualize higher-value wildlife as an investment alternative and finally to establish guidelines for investment in this new asset class by means of a case study approach and the analysis of the methodology of two ranchers/investment providers offering higher-value wildlife as an investment opportunity. As this investment initiative continues to develop and new investment opportunities arise, the need for contextualization and analysis of investments in higher-value wildlife, based on sound financial management principles, is becoming more apparent. In order to address this need for contextualization, a literature review is undertaken where the background of higher-value wildlife is discussed. However, contextualization of a new asset class cannot be completed in isolation. The nature of investments is analysed, followed by a discussion of the most commonly used investment options and techniques utilized in investment analysis. However, contextualization of a new asset class based purely on literature, would disregard the practical application that is utilized within the higher-value wildlife investment sector. Therefore an industry relevant context is presented by analysing the practices and methodology employed by two ranchers/investment providers who offer higher-value wildlife as an investment option. In order to validate investment in higher-value wildlife and factually classify the economic activity as an investment alternative, a set of criteria and characteristics are established. Based on a literature review regarding the nature of investments, the conclusion is made that higher-value wildlife is a valid tangible alternative investment option, adhering to investment principles such as risk and return. Through the analyses of information gathered by means of two case studies, the theory and criteria is applied and further conclusions are drawn in order to establish guidelines for investment in the higher-value wildlife industry. This is done by an analysis of the business model and the modus operandi of the case studies. The advantages and inherent disadvantages regarding the manner in which the case studies approach higher-value wildlife investment is highlighted. By incorporating and analysing the information gathered (by means of semi-structured interviews and literature reviews) conclusions are drawn which could provide information and guidelines for potential future investors. As stated, this research is based on a case study approach, whereby specific industry insights are gained from established high-value wildlife ranchers/investment providers. The investment principles discussed in the literature review are applied to each case study for a comprehensive analysis of investment in higher-value wildlife. This acts as an important aid in the contextualization of higher-value wildlife as a viable investment alternative within the broader investment landscape. Creating context and establishing the validity of a new asset class of investments is of utmost importance. This study aims to address the above and provide guidelines for future investment by analysing higher-value wildlife as an investment alternative. / MCom (Management Accountancy), North-West University, Potchefstroom Campus, 2015
30

Analysing higher-value wildlife as an investment alternative / Gysbert Johannes van Wyk

Van Wyk, Gysbert Johannes January 2015 (has links)
Recent developments in the breeding of higher-value wildlife have seen the emergence of an alternative investment opportunity being offered to potential investors. Through this opportunity, investors can enter a lucrative market which has proven to date to be a highly profitable alternative, generating even higher than above average returns. The objective of this study can be summarized as three-fold: to determine whether higher-value wildlife can be considered as an investment alternative, to contextualize higher-value wildlife as an investment alternative and finally to establish guidelines for investment in this new asset class by means of a case study approach and the analysis of the methodology of two ranchers/investment providers offering higher-value wildlife as an investment opportunity. As this investment initiative continues to develop and new investment opportunities arise, the need for contextualization and analysis of investments in higher-value wildlife, based on sound financial management principles, is becoming more apparent. In order to address this need for contextualization, a literature review is undertaken where the background of higher-value wildlife is discussed. However, contextualization of a new asset class cannot be completed in isolation. The nature of investments is analysed, followed by a discussion of the most commonly used investment options and techniques utilized in investment analysis. However, contextualization of a new asset class based purely on literature, would disregard the practical application that is utilized within the higher-value wildlife investment sector. Therefore an industry relevant context is presented by analysing the practices and methodology employed by two ranchers/investment providers who offer higher-value wildlife as an investment option. In order to validate investment in higher-value wildlife and factually classify the economic activity as an investment alternative, a set of criteria and characteristics are established. Based on a literature review regarding the nature of investments, the conclusion is made that higher-value wildlife is a valid tangible alternative investment option, adhering to investment principles such as risk and return. Through the analyses of information gathered by means of two case studies, the theory and criteria is applied and further conclusions are drawn in order to establish guidelines for investment in the higher-value wildlife industry. This is done by an analysis of the business model and the modus operandi of the case studies. The advantages and inherent disadvantages regarding the manner in which the case studies approach higher-value wildlife investment is highlighted. By incorporating and analysing the information gathered (by means of semi-structured interviews and literature reviews) conclusions are drawn which could provide information and guidelines for potential future investors. As stated, this research is based on a case study approach, whereby specific industry insights are gained from established high-value wildlife ranchers/investment providers. The investment principles discussed in the literature review are applied to each case study for a comprehensive analysis of investment in higher-value wildlife. This acts as an important aid in the contextualization of higher-value wildlife as a viable investment alternative within the broader investment landscape. Creating context and establishing the validity of a new asset class of investments is of utmost importance. This study aims to address the above and provide guidelines for future investment by analysing higher-value wildlife as an investment alternative. / MCom (Management Accountancy), North-West University, Potchefstroom Campus, 2015

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