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Tassano, Velaochaga Hebert Eduardo. "Competition and utility regulation." Pontificia Universidad Católica del Perú, 2016. http://repositorio.pucp.edu.pe/index/handle/123456789/116247.
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With the entry into force of the Constitution of Peru of 1993, the economic model of social market economy, which was accompanied by an institutional reform, creating four (4) regulators of utilities and one (1) competition agency, was established. The economic model of social market economy, guarantees free competition in the market as a general rule, establishing a regulatory framework for public services that before the reform, were managed directly by the State. Thus, in this paper we will learn how to set up the Peruvian institutional framework and what are the main similarities and differences between competition and regulation, for which we will detail the functions of the competition agency and regulatory bodies as well as interaction between the two.Con la entrada en vigencia de la Constitución Política del Perú de 1993, se estableció el modelo económico de economía social de mercado. Como parte del mismo, se realizaron una serie de reformas institucionales del Estado, creándose cuatro organismos reguladores de los servicios públicos y una agencia de competencia. El modelo económico de economía social de mercado garantiza la libre competencia en el mercado como regla general, estableciendo un marco regulatorio para los servicios públicos que, antes de la reforma, eran gestionados directamente por el Estado. Así, en el presente trabajo podremos conocer cómo se ha establecido el marco institucional peruano y cuáles son las principales similitudes y diferencias de la competencia y la regulación, para lo que detallaremos las funciones de la agencia de competencia y la de los organismos reguladores, así como la interacción que existe entre ambos.
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Lindholm, Maj-Lis. "Utility of bispectral index (BIS) monitoring during general anesthesia." Stockholm, 2009. http://diss.kib.ki.se/2009/978-91-7409-697-2/.
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Anderson, Jocelynn Marie. "A Cloud-Based GSSHA Index Map Editor Utility for Watershed Decision Support." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5292.
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Preventing damages from flooding is critically important for city managers and planners.Efforts in protecting infrastructure from flooding are often coupled with building hydrologicmodels to provide predictions of what is likely to happen during storm events. As land usechanges, these models must be updated, which is more challenging with sophisticated models. Ateam of researchers from universities in Utah and Wyoming have been developing tools forwater management in the Intermountain West as part of a collaborative NSF research grantcalled CI-WATER. In particular, a free and open source web platform called Tethys has beendeveloped to support the development and hosting of hydrologic web applications. Tethys wasused to develop a prototype application that uses a GSSHA runoff model and allows users tochange land-use inputs to simulate the impact on a watershed for any type of land use change.The application also provides a method to run the edited model and produces a comparisonreport of before-and-after runoff and water depth as part of a decision-support framework.
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Bembry, Karen L. "Establishing the utility of a classroom effectiveness index as a teacher accountability system." Thesis, University of North Texas, 2002. https://digital.library.unt.edu/ark:/67531/metadc3161/.
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How to identify effective teachers who improve student achievement despite diverse student populations and school contexts is an ongoing discussion in public education. The need to show communities and parents how well teachers and schools improve student learning has led districts and states to seek a fair, equitable and valid measure of student growth using student achievement. This study investigated a two stage hierarchical model for estimating teacher effect on student achievement. This measure was entitled a Classroom Effectiveness Index (CEI). Consistency of this model over time, outlier influences in individual CEIs, variance among CEIs across four years, and correlations of second stage student residuals with first stage student residuals were analyzed. The statistical analysis used four years of student residual data from a state-mandated mathematics assessment (n=7086) and a state-mandated reading assessment (n=7572) aggregated by teacher. The study identified the following results. Four years of district grand slopes and grand intercepts were analyzed to show consistent results over time. Repeated measures analyses of grand slopes and intercepts in mathematics were statistically significant at the .01 level. Repeated measures analyses of grand slopes and intercepts in reading were not statistically significant. The analyses indicated consistent results over time for reading but not for mathematics. Data were analyzed to assess outlier effects. Nineteen statistically significant outliers in 15,378 student residuals were identified. However, the impact on individual teachers was extreme in eight of the 19 cases. Further study is indicated. Subsets of teachers in the same assignment at the same school for four consecutive years and for three consecutive years indicated CEIs were stable over time. There were no statistically significant differences in either mathematics or reading. Correlations between Level One student residuals and HLM residuals were statistically significant in reading and in mathematics. This implied that the second stage of the model was consistent for all students. Much is still unknown concerning teacher effect on student achievement, especially when confined to teacher activity within one school year. However, results indicate the utility of using statistical modeling of student achievement within the context of teacher accountability.
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Ganesh, Srinivasan. "Investigation of the utility of the vegetation condition index (VCI) as an indicator of drought." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2517.
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Curwen, Tracey. "Utility of the Interpersonal Reactivity Index in measuring differences in empathy among adolescent male sex offenders." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28703.pdf.
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Holmes, Richard Roland. "The economics of stock index futures : theory and evidence." Thesis, Brunel University, 1993. http://bura.brunel.ac.uk/handle/2438/5391.
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This thesis aims to provide detailed investigation into the role and functioning of the FTSE-100 stock index futures contract, by examining four interrelated issues. Chapter 1 reviews the literature, demonstrating that stock index futures can increase investor utility by offering hedging and investment opportunities. Further, the price discovery role of futures is discussed. Chapter 2 investigates the risk return relationship for the FTSE-100 contract within a CAPM framework. While CAPM adequately explains returns prior to October 1987, post-crash the contract is riskier and excess returns and a day of the week effect are evident. Chapter 3 examines the impact of futures on the underlying spot market using GARCH, which allows examination of the link between information and volatility. While spot prices are more volatile post-futures, this is due to more rapid impounding of information. The view that futures destabilise spot markets and should be subject to further regulation is questioned. Chapter 4 examines futures market efficiency using the Johansen cointegration procedure and variance bounds tests which are developed here. Results suggest futures prices provide unbiased predictions of future spot prices for 1, 2 and 4 months prior to maturity of the contract. For 3, 5 and 6 months prior to maturity the unbiasedness hypothesis does not hold. Chapter 5 discusses the major role of futures; hedging. Hedge ratios and hedging effectiveness are examined in relation to duration and expiration effects. Hedge ratio stability is also examined. Finally, hedging strategies based on historical information are examined. Results show there are duration and expiration effect, hedge ratios are stationary and using historical information does not greatly reduce hedging effectiveness. The FTSE-100 contract is shown to be a highly effective means by which to hedge risk. Chapter 6 provides a summary and concluding remarks concerning the relevance of the research carried out here.
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VILLELA, FLAVIA RIBEIRO. "MULTICRITERION ANALYSIS TO CREATE A QUALITY INDEX TO EVALUATE THE SERVICE PROVIDED BY A DISTRIBUTION ELECTRICITY UTILITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2009. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17404@1.
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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOREsta dissertação apresenta, via um estudo de caso, o desenvolvimento de um modelo de decisão multicritério para a definição do Índice de Qualidade de Fornecimento de Energia Elétrica por uma distribuidora. O estudo desenvolveu um processo interativo, apoiado pela abordagem multicritério e software MACBETH. Este trabalho apresenta as diferentes componentes deste processo interativo sociotécnico. MACBETH requer apenas julgamentos qualitativos sobre as diferenças de atratividade entre elementos para gerar pontuações e pesos em cada critério. Esse tipo de procedimento de julgamento motivou discussão e aprendizagem no âmbito do grupo de trabalho, contribuindo para o desenvolvimento de um sistema de valores em grupo. O modelo multicritério desenvolvido é suficientemente genérico para ser facilmente aplicável a outras distribuidoras de energia elétrica. O índice proposto pode ser adaptado e servir como medida de comparação da qualidade dos serviços prestados entre as diversas distribuidoras. Desta forma, o presente trabalho também se apresenta como uma contribuição ao órgão regulador, que vem estudando a possibilidade de se definir um indicador de qualidade que seja mais robusto e que leve em consideração outros aspectos dos serviços de fornecimento de energia.
This dissertation presents, through a case study, the development of a multicriterion decision model to create a Quality Index to evaluate the service provided by a distribution electricity utility. The study used an iterative process following the approach proposed by MACBETH software. The thesis shows the different components of this social-technical process adopted. MACBETH requires solely qualitative judgments about the attractiveness differences among the elements in order to generate the weights and the marks for each criterion. This type of judgment procedure motivates the discussion and the learning process among the members of the working group, which results in a real contribution to development of a group value system. The multicriterion model developed is general enough to allow its implementation to others distribution electricity utilities. This proposed index can be easily adapted and acts as a comparison measure of the quality of the services provided by utilities. Therefore, the present thesis also brings about a contribution to the regulator agent which is searching for quality index that is robust enough to be implemented in any distributing utility.
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O'Sullivan, Michelle. "Utility of the brain injury screening index in identifying female prisoners with a traumatic brain injury and associated cognitive impairment." Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/808753/.
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An estimated 60.25% of offenders have a history of traumatic brain injury (TBI). There is currently no established valid or reliable screening tool for identifying female prisoners with a TBI and associated cognitive impairment available in the UK. Using a cross-sectional design, this study aimed to investigate the retest reliability and construct validity of the Brain Injury Screening Index (BISI). Convergent validity was explored using self-report measures of mood and neurodisability, as well as a battery of neuropsychological assessments of cognitive functioning. Of a planned sample of 73 participants, preliminary data from 23 participants has been analysed. 69.56% of participants were identified as having a history of TBI, with a mean of 2.09 TBIs. Intraclass correlation coefficients reached statistical significance for six of 10 identified key clinical indicators on the BISI. The BISI variables did not reach statistically significant convergence with most of the test battery. Two of the four BISI summary variables demonstrated correlations in the hypothesised directions across the full assessment battery, however only one BISI variable reached statistical significance with one subscale in the battery. Analyses provide support for further investigation into the construct validity and retest reliability of the BISI with a larger sample. The implications of these findings, particularly in refining the BISI, and future research and practice are considered.
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Leisinger, Michael A. "Effects of the British Columbia public health officer's health determinants on the Health Utility Index and the Richardson-Zumbo Health Profile." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62482.pdf.
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Alayza, Sueiro Santiago. "Rupert Smith. “The Utility of the Force: The Art of War in the Modern World". Penguin Books Ltd. Allen Lane Londres, Gran Bretaña: 2005." Politai, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/92192.
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Lambert, Spencer Francis. "Examining Large Game Utility and Transport Decisions by Fremont Hunters: A Study of Faunal Bone from Wolf Village, Utah." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6832.
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This analysis of faunal bones from Wolf Village focuses on large game and its utility, as evidenced by what is known as the modified general utility index (MGUI). The MGUI proposes that bones at sites reflect transportation and butchering choices made by hunters at kill-butchering sites. According to the assumptions associated with the MGUI, hunters should select animal portions with high food value. The MGUI has been used in Fremont archaeology to provide a rough measure of site function. The expectation is that faunal bones would accompany the prized cuts of large game meat at habitation sites – and the animal parts with little food value would remain at kill-butchering sites because they are not worth the cost to carry them to the village. My analysis of large game animal bones found in excavations at Wolf Village counter these expectations. Fremont hunters at Wolf Village were returning to the site with low-caloric portions of large game, at least part of the time. Results from strontium isotope analysis suggest that many of the large game individuals hunted by the Fremont were not local to the immediate area. This suggests that hunters saw utility in low-caloric elements not related only to food value. Some low-caloric skeletal elements were used by the Fremont to construct bone tools and other objects, and as possible symbolic objects used in abandonment rituals. The results of this research suggests that the MGUI is not appropriate for measuring the utility of animal portions to the Fremont. Only when considering the social and non-caloric economic reasons for transporting low caloric elements, can archaeologists discover the true utility of large game animal parts to Fremont hunters.
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Magnúsdóttir, Bergrún Tinna. "Estimation and optimal designs for multi-response Emax models." Doctoral thesis, Stockholms universitet, Statistiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-102888.
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This thesis concerns optimal designs and estimation approaches for a class of nonlinear dose response models, namely multi-response Emax models. These models describe the relationship between the dose of a drug and two or more efficacy and/or safety variables. In order to obtain precise parameter estimates it is important to choose efficient estimation approaches and to use optimal designs to control the level of the doses administered to the patients in the study. We provide some optimal designs that are efficient for estimating the parameters, a subset of the parameters, and a function of the parameters in multi-response Emax models. The function of interest is an estimate of the best dose to administer to a group of patients. More specifically the dose that maximizes the Clinical Utility Index (CUI) which assesses the net benefit of a drug taking both effects and side-effects into account. The designs derived in this thesis are locally optimal, that is they depend upon the true parameter values. An important part of this thesis is to study how sensitive the optimal designs are to misspecification of prior parameter values. For multi-response Emax models it is possible to derive maximum likelihood (ML) estimates separately for the parameters in each dose response relation. However, ML estimation can also be carried out simultaneously for all response profiles by making use of dependencies between the profiles (system estimation). In this thesis we compare the performance of these two approaches by using a simulation study where a bivariate Emax model is fitted and by fitting a four dimensional Emax model to real dose response data. The results are that system estimation can substantially increase the precision of parameter estimates, especially when the correlation between response profiles is strong or when the study has not been designed in an efficient way.At the time of the doctoral defence the following papers were unpublished and had a status as follows: Paper 1: Manuscript; Paper 2: Manuscript; Paper 3: Manuscript; Paper 4: Manuscript.
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Paladino, JoDe Berk Laura E. "Private speech in children with autism developmental course and functional utility /." Normal, Ill. : Illinois State University, 2006. http://proquest.umi.com/pqdweb?index=0&did=1276398691&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1181312973&clientId=43838.
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Thesis (Ph. D.)--Illinois State University, 2006.Title from title page screen, viewed on June 8, 2007. Dissertation Committee: Laura E. Berk (chair), Karla Doepke, Stacey Jones Bock, Dawn McBride. Includes bibliographical references (leaves 168-175) and abstract. Also available in print.
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Samuel, Theresa. "The utility of occlusion of the pulse oximeter trace in the estimation of systolic blood pressure during spinal anaesthesia for caesarean section: the effect of body mass index." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/23653.
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Background: We compared the accuracy and precision of estimation of the systolic blood pressure (SBP) by disappearance of the pulse oximeter trace (DOT), with noninvasive blood pressure (NIBP) measurement, across the range of body mass index (BMI), during spinal anaesthesia (SA) for caesarean section (CS). Methods: Three groups of 25 parturients were recruited, with BMI of < 30- (Group 1), 30-40- (Group 2), and > 40 kg/m2 (Group 3) respectively. SBP was measured using the DASH® 3000 monitor (GE Health Care, UK) NIBP monitor, placed on the same arm as the pulse oximeter probe. Estimations of SBP were done before- and 5 minutes after induction of SA, during cuff inflation and deflation. The times taken for the estimations and the actual NIBP measurements were noted. Bland and Altman analysis was performed and the correlation coefficient estimated. Results: Concerning the most clinically relevant estimation, namely SBP during inflation post-SA: For Groups 1, 2 and 3, r = 0.56, 0.74 and 0.91; bias = -0.4, -2.9 and 0.8 mmHg, and limits of agreement = -27.7 to 26.9, -27.7 to 21.9 and -15.9 to 17.5 mmHg respectively. The mean (SD) time required for estimation of the SBP during inflation post- SA was 7.5 (1.1) s, 11.8 (3.8) s and 16.8 (4.2) s in the Groups 1, 2 and 3 respectively. The mean (SD) time required for measurement of post-SA SBP during inflations in Groups 1, 2 and 3, was 30.3 (13.1) s, 41.3 (10.2) s and 49.8 (14.6) respectively. In the post-SA period, mean time saved by estimating SBP during inflation was approximately 28.5 seconds, compared with 9 seconds during deflation. The time saved in Groups 1, 2 and 3 was 22.8 (13.2) s, 30.0 (11.6) s and 33.0 (15.6) s respectively. In the BMI > 40 kg/m2 group, the percentage error is ±13% of the mean systolic blood pressure observed, and the absolute error is ±16 mmHg, compared to ±27 mmHg in the normal BMI group. Conclusion: Post-SA estimation of SBP during cuff inflation in morbidly obese patients is more accurate and precise than in the other BMI Groups. Time to estimation is shorter than measurement by a clinically relevant period (33 s). This should improve patient safety in morbidly obese parturients.
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Maletta, Héctor. "La evolución del Homo economicus: problemas del marco de decisión racional en Economía." Economía, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/117557.
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Since its beginnings, and more clearly since the mid 1800, Economics has been resting on the assumption that economic agents make rational decisions, maximizing their utility or well-being according to their own preferences and interests. The economic order resulting from that plurality of rational decisions is regarded as an efficient and Pareto-optimum one. Several authors have questioned the validity of those assumptions, and this has entailed a gradual transformation of the assumptions. This paper discusses the problems faced by the idea of a fully rational Homo economicus, the adjustments and defensive measures adopted by various tendencies within Economics to overcome those problems and counter various related theoretical and methodological criticisms. The paper also discusses more recent conceptions of economic reality that are at variance with the traditional view, especially those linked to behavioural, institutional and evolutionary Economics.Desde sus inicios, y más claramente desde mediados del siglo XIX, la Economía se ha basado en el supuesto de que los agentes económicos toman decisiones racionales, maximizando su utilidad o bienestar de acuerdo a sus propias preferencias e intereses. El orden económico resultante de esa pluralidad de decisiones es considerado óptimo o eficiente. Diversos autores han cuestionado la validez de estos supuestos y ello ha motivado una gradual transformación de esos mismos supuestos. En este artículo se examinan los problemas que enfrenta la noción de un Homo economicus completamente racional, las correcciones y medidas defensivas adoptadas por distintas tendencias dentro del análisis económico a fin de resolver esos problemas y contrarrestar críticas teóricas y metodológicas, y el desarrollo reciente de algunas concepciones de la realidad económica que se apartan de aquella concepción tradicional, en especial las vinculadas a la economía conductual, a la economía institucional y a la economía evolucionaria.
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Abayateye, Julius. "Study of bundling reactive power and transaction charges with generation cost in an interconnected power system a thesis presented to the faculty of the Graduate School, Tennessee Technological University /." Click to access online, 2009. http://proquest.umi.com/pqdweb?index=0&did=1759989191&SrchMode=1&sid=2&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1268411282&clientId=28564.
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Grigas, Domantas. "Aukšto pravažumo (4x4) šarvuotų taktinių automobilių rinkos tyrimas techniniu, patikimumo, taktiniu ir ekonominiu požiūriais." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100609_125454-02313.
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Šiame baigiamajame darbe buvo nagrinėjami aukšto pravažumo (4x4) šarvuoti taktiniai automobiliai ir jų specifika. Apžvelgti, apskaičiuoti ir palyginti automobilių rodikliai. Nagrinėjamas G. Bekker metodas automobilių mobilumui nustatyti. Naudojantis BDTM metodika apskaičiuojami automobilių mobilumo parametrai. Nagrinėjamas prioritetų skirstymo ir parinkimo (MPSP) metodas. Šio metodo pagrindu sudaroma metodika, su kuria galima palyginti su kitais ir išrinkti optimalų automobilį, atsižvelgiant į prioritetines automobilio charakteristikas, bei ekspertų vertinimus.In this final thesis gives an overview of the high utility (4x4) armored tactical vehicles and their specifications. Reviewed, calculated and compared the vehicles parameters. Was examined G. Bekker equations and method of determination vehicles mobility. Calculated vehicle mobility parameters using the BDTM methodology. Examined the modificated allocation of priorities and selection (MPSP) method. Developed high-utility (4x4) tactical vehicle selection method that allows you to compare with others and choose the optimum car, depending on the vehicle's performance, and expert assessment. This method is based on the method of MPSP and gives an opportunity to evaluate the high utility (4x4) tactical vehicle to different partial criteria and their meaning of importance.
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Faria, J??nior Jos?? Raymundo de. "Diversifica????o internacional de investimentos com a utiliza????o de Exchange-Traded Fund e Purchasing Managers' Index." FECAP - Faculdade Escola de Com??rcio ??lvares Penteado, 2014. http://132.0.0.61:8080/tede/handle/tede/362.
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Previous issue date: 2014-02-18The objective of this research is to propose for high income Brazilian investors a model of dynamic allocation with international diversification that uses ETFs and the PMI manufacturing index. ETFs were selected from twelve countries, including the ETF equities in Brazil, EWZ. The portfolios were created with and without the EWZ and two procedures were adopted to weight the assets: (1) maximization of the Sharpe ratio and (2) allocation based on the proportion of GDP. An alternative method of selection of assets was presented, using the PMI manufacturing index as a decision filter for the allocation of the resources. The PMI is usually published on the first business day of each month, is researched in the major countries and is one of the first, if not the first, leading indicator of the economic cycle. When the PMI signaled economic growth, the portfolio consisted of a higher proportion of equities. To evaluate the performance of the proposed portfolio, it was compared to other three global portfolios that followed classical allocation strategies, and one of these was considered a benchmark. The proposed portfolio was also compared to a benchmark created exclusively with brazilian assets. The result suggests that the use of PMI as a decision filter in an active and internationally diversified portfolio using only foreign ETFs and weighted according to the techniques of Modern Portfolio Theory presented higher total return and Generalized Sharpe Ratio than the international and brazilian benchmarks. This result suggests that Brazilian and foreign investors and managers who adopt active management of their portfolios should include PMI as one of the indicators to be observed in the allocation strategy
O objetivo desta pesquisa ?? propor para os investidores brasileiros de alta renda um modelo de aloca????o din??mica com diversifica????o internacional que utiliza ETFs e o ??ndice PMI da manufatura. Foram selecionados ETFs de doze pa??ses, incluindo o ETF de renda vari??vel do Brasil, o EWZ. Foram criadas carteiras com e sem o EWZ e adotados dois procedimentos para ponderar os ativos: (1) maximiza????o do ??ndice de Sharpe e (2) aloca????o com base na propor????o do PIB. Foi apresentado um m??todo alternativo de sele????o de ativos, utilizando o ??ndice PMI da manufatura como filtro de decis??o para a aloca????o dos recursos. O PMI ?? divulgado, em geral, no primeiro dia ??til de cada m??s, ?? pesquisado nos principais pa??ses e ?? um dos primeiros, se n??o o primeiro, indicador antecedente do ciclo econ??mico. Quando o PMI sinalizou crescimento econ??mico, a carteira foi composta por maior propor????o de ativos de renda vari??vel. Para avalia????o da performance da carteira proposta, a mesma foi comparada a outras tr??s carteiras globais que seguiram estrat??gias cl??ssicas de aloca????o, sendo que uma destas foi considerada benchmark. A carteira proposta tamb??m foi comparada a um benchmark criado com ativos exclusivamente brasileiros. O resultado obtido sugere que o uso do PMI como filtro de decis??o em uma carteira ativa e diversificada internacionalmente usando somente ETFs estrangeiros e ponderados de acordo com as t??cnicas da Moderna Teoria de Portf??lio apresentou retorno total e ??ndice de Sharpe generalizado superiores ao benchmark internacional e ao benchmark brasileiro. Este resultado sugere que os investidores e os gestores brasileiros e estrangeiros que adotam a gest??o ativa de seus portf??lios poderiam incluir o PMI como um dos indicadores a serem observados na estrat??gia de aloca????o
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Aybar, Chávez Víctor Alfredo. "Modelación matemática de un motor de encendido por chispa que utiliza gas natural como combustible." Universidad Nacional de Ingeniería. Programa Cybertesis PERÚ, 2005. http://cybertesis.uni.edu.pe/uni/2005/aybar_cv/html/index-frames.html.
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Hamdi, Haykel. "Théorie des options et fonctions d'utilité : stratégies de couverture en présence des fluctuations non gaussiennes." Thesis, Paris 2, 2011. http://www.theses.fr/2011PA020006/document.
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L'approche traditionnelle des produits dérivés consiste, sous certaines hypothèses bien définies, à construire des stratégies de couverture à risque strictement nul. Cependant,dans le cas général ces stratégies de couverture "parfaites" n'existent pas,et la théorie doit plutôt s'appuyer sur une idée de minimisation du risque. Dans ce cas, la couverture optimale dépend de la quantité du risque à minimiser. Dans lecadre des options, on considère dans ce travail une nouvelle mesure du risque vial'approche de l'utilité espérée qui tient compte, à la fois, du moment d'ordre quatre,qui est plus sensible aux grandes fluctuations que la variance, et de l'aversion aurisque de l'émetteur d'une option vis-à-vis au risque. Comparée à la couverture endelta, à l'optimisation de la variance et l'optimisation du moment d'ordre quatre,la stratégie de couverture, via l'approche de l'utilité espérée, permet de diminuer lasensibilité de la couverture par rapport au cours du sous-jacent. Ceci est de natureà réduire les coûts des transactions associéesThe traditional approach of derivatives involves, under certain clearly defined hypothesis, to construct hedging strategies for strictly zero risk. However, in the general case these perfect hedging strategies do not exist, and the theory must be rather based on the idea of risk minimization. In this case, the optimal hedging strategy depends on the amount of risk to be minimized. Under the options approach, we consider here a new measure of risk via the expected utility approach that takes into account both, the moment of order four, which is more sensitive to fluctuations than large variance, and risk aversion of the investor of an option towards risk. Compared to delta hedging, optimization of the variance and maximizing the moment of order four, the hedging strategy, via the expected utilitiy approach, reduces the sensitivy of the hedging approach reported in the underlying asset price. This is likely to reduce the associated transaction costs
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Figueiredo, Lucia Mara. "An?lise da salubridade do meio urbano com base na utiliza??o de ?ndices ambientais: aplica??o na bacia de drenagem XII da cidade do Natal-RN." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15983.
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Previous issue date: 2011-11-04The growing accumulation of people in urban centers caused chronic problems of the cities to begin to take an increasingly unsustainable. Primarily related to lack of infrastructure coupled with sanitation and lack of investment in critical sectors such as health, education, housing and transportation, these problems start to deteriorate markedly the quality of life of city dwellers and put into test management policies of the spaces urbanized. To reverse this situation, shows is essential to the use of tools (highlighting this harvest rates and environmental indicators) that help in assessing the current conditions and may assist in predicting future scenarios. From the information listed above, now put the research seeks to present an index called ISBA Environmental (Sanitation Index) which looks at the four urban systems (water, sewer, solid waste and urban drainage) from the viewpoint of application in a geographical cutout specific - in this case the Drainage Basin XII, defined by the Plan of Urban Drainage Stormwater in the city of Natal, capital of Rio Grande do Norte. This index, together with analysis of other factors sought to trace the current conditions of the basin and thus, assist in proposing the best solutions. For the preparation of the index was applied a questionnaire with a sample of 384 (three hundred eighty-four) households that aimed to study two variables: access to services and satisfaction of the population in relation to these. The ISBA has shown that the system is the most deficient collection and disposal of effluents (ICE = 47.66%), followed by the drainage of rainwater (IDAP = 54.17%), water supply (AAI = 61, 36) and solid waste collection (IRS = 78.28). With the ISBA was possible to verify that the qualitative data shows whose subjectivity is evident (as is the case of user satisfaction) can be of great importance when an assessment, since we obtained the correlation coefficient between the variables "Access" and " Satisfaction "equal to 0.8234, showing a strong correlation between the existence / quality of service offered and the impressions of the population that receives them
O crescente ac?mulo de pessoas nos centros urbanos fez com que problemas cr?nicos das cidades passassem a tomar propor??es cada vez mais insustent?veis. Relacionados principalmente a falta de infra-estrutura de saneamento e somadas a falta de investimentos em setores cr?ticos como sa?de, educa??o, habita??o e transporte, estes problemas passam a degradar acentuadamente a qualidade de vida dos citadinos e colocam em teste as pol?ticas de gest?o dos espa?os urbanizados. Para reverter tal quadro, mostra-se imprescind?vel o uso de ferramentas que auxiliem na avalia??o das atuais condi??es e possam auxiliar na predi??o de cen?rios futuros. A partir das informa??es elencadas supra, a presente pesquisa busca apresentar um instrumento ambiental denominado ?ndice de Saneamento B?sico (ISBA) que visa a analise dos quatro sistemas urbanos (?gua, esgoto, res?duos s?lidos e drenagem urbana) sob a ?tica de aplica??o em um recorte geogr?fico especifico no caso a Bacia de Drenagem XII, definida pelo Plano de Drenagem Urbana de ?guas Pluviais da cidade do Natal, capital do Rio Grande do Norte. Este ?ndice, juntamente com an?lises de outros fatores ajuda a tra?ar as atuais condi??es da bacia e com isso, auxiliar na proposi??o das melhores solu??es. Para a aplica??o do ?ndice foram utilizados obtidos atrav?s de um question?rio com uma amostra de 384 (trezentos e oitenta e quatro) resid?ncias que objetivava estudar duas vari?veis: acesso e a satisfa??o da popula??o aos servi?os de saneamento. O ISBA mostrou que o sistema mais deficit?rio ? o de coleta e destina??o final de efluentes (ICE=47,66%), seguido pela drenagem de ?guas pluviais (IDAP=54,17%), o abastecimento de ?gua (IAA=61,36) e a coleta de res?duos s?lidos (IRS=78,28). Com o ISBA foi poss?vel verificar que dados qualitativos cuja subjetividade mostra-se evidente (como ? o caso da satisfa??o dos usu?rios) podem ser de grande import?ncia quando de uma avalia??o, visto que se obteve coeficiente de correla??o entre as vari?veis Acesso e Satisfa??o igual a 0,8234, mostrando grande correla??o entre a exist?ncia/qualidade de servi?o oferecido e as impress?es da popula??o que os recebe
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Sindi, Hatem. "Unified Reliability Index Development for Utility Quality Assessment." Thesis, 2013. http://hdl.handle.net/10012/7204.
Full textAbstract:
With the great potential smart distribution systems have to cause a paradigm shift in conventional distribution systems, many areas need investigation. Throughout the past few decades, many distribution systems reliability indices have been developed. Varying in their calculation techniques, burden, and purpose of calculation, these indices covered wide range of reliability issues that face both utilities and regulators. The major purpose of the continuous development of reliability indices is to capture a comprehensive idea of systems performance. While systems are evolving to a much more smarter and robust ones, so do the assessment tools need to be improved. The lack of consensus among utilities and regulators on which indices should be used complicate the problem more. Furthermore, regulators still come short when it comes to standard implementation because no final standard have been developed. However, regulators tend to advice or impose certain numbers on utilities based on historic performances. Because of the inevitable comparisons made by regulators on the routinely practiced process of utilities’ reporting of some of their indices, adequate and fair process needs to be implemented. The variation in utilities perspective on the advice or imposed indices cause an additional burden to achieving fair and adequate designs, upgrade requirements, and public goodwill. Some utilities consider these regulators recommendations guidelines; others treat them as strict standards, and yet others consider them goals. In this work, a development of a unified reliability index, which can yield proper performance assessment, fair comparisons, and reflection of all the knowledge imbedded within all current indices, will be developed. The developed unified index provides several benefits, among which is adequate standards design, improved tools for planning and design optimization, and less technical burden on operators. In addition, the development of a unified reliability index required the development of a standard normalization methodology.
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Shen, DaJiun, and 沈大鈞. "Using Utility-based method to measure the mutual fund Performance index." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/75n2kp.
Full textAbstract:
碩士銘傳大學
財務金融學系碩士班
94
This study combines stochastic dominance rule and prospect theory to form one mutual fund performance measure index which different with the traditional one. And then this study analyzes the relation between different risk sensitive levels of investor and stochastic dominance index. This results summarized as followed. First, under the performance difference between the stochastic dominance index and the traditional index. If the weighted style of investor is traditional, the consistence of performance which resulted from the first stochastic dominance index and traditional one is higher. It is because of the factors affect performance is determined by the first and second conditions. After considering the third and forth conditions, the consistence is lower. Second, under the persistence of performance, this study apply the year and quarter to be the time interval to test if the mutual fund have the persistence in the short-term and long-term. The result is that the mutual fund have persistence in the short-term and have not in the long-term.
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"Diagnostic Utility of WISC-IV General Abilities Index and Cognitive Proficiency Index Difference Scores among Children with ADHD." Master's thesis, 2010. http://hdl.handle.net/2286/R.I.8638.
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abstract: The Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) General Abilities Index (GAI) and Cognitive Proficiency Index (CPI) have been advanced as possible diagnostic markers of Attention-Deficit Hyperactivity Disorder (ADHD). Diagnostic utility statistics were used to test the ability of GAI-CPI difference scores to identify children with ADHD. Participants included an ADHD sample (n = 78), a referred but non-diagnosed hospital sample (n = 66), and a simulated sample with virtually identical psychometric characteristics as the WISC-IV 2,200 child standardization sample. Receiver Operating Characteristic (ROC) analyses were computed to determine the utility of GAI-CPI difference scores to identify children with ADHD. The GAI-CPI discrepancy method had an AUC of .64, 95% CI [0.58, 0.71] for the ADHD sample compared to the simulated normative sample and an AUC of .46, 95% CI [0.37, 0.56] for the ADHD sample compared to the referred but non-diagnosed hospital sample. These AUC scores indicate that the GAI-CPI discrepancy method has low accuracy.Dissertation/Thesis
M.A. Educational Psychology 2010
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Jacoby, James Derek. "Collaborative and automatic annotations to improve the utility of recorded meetings." Thesis, 2010. http://hdl.handle.net/1828/3155.
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In this thesis I present a collaborative annotation strategy to improve the usability of audio/visual meeting recordings. Meeting records are inherently difficult to navigate without structure, and even full transcripts do not always address this problem. Through the use of collaborative annotations some structure can be provided. The current study examines the use of a scalable classroom response system to allow groups to conveniently and easily provide these annotations during a class or meeting and presents a web-based video browser that uses these annotations to greatly improve the efficiency and satisfaction in a later information retrieval task. The applicability of this annotation strategy is discussed in a range of situations across formal meetings, classroom situations, and online audio and video.
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Rathore, Akshay Kumar. "High-frequency transformer isolated power conditioning system for fuel cells to utility interface." Thesis, 2008. http://hdl.handle.net/1828/2871.
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This thesis presents interfacing of fuel cells to a single-phase utility line using a high-frequency transformer isolated power converter. This research contributes towards selecting a suitable utility interfacing scheme and then designing a power conditioning system along with its control for connecting fuel cells to a single-phase utility line that can achieve high efficiency and compact size. The power conditioning system, designed and built in the research laboratory is connected with the utility line and the experimental results are presented.
Based on the literature available on photovoltaic (PV) array and fuel cell based utility interactive inverters with high-frequency transformer isolation, the interfacing schemes for connecting a DC source, in particular fuel cells, to a single-phase utility line are classified. Based on the fuel cell characteristics and properties, performance and the comparison of these utility interfacing schemes, a suitable scheme for the present application is selected.
Because of low voltage fuel cells, the system takes higher current from the fuel cell and results in lower efficiency of the system. The inverter stage of the selected scheme deals with the higher voltage (lower current) and therefore, its efficiency is higher. In this sense, the efficiency of the whole system depends mainly on the efficiency of the front-end DC-DC converter. To realize a low cost, small size and light weight system, soft-switching is required. Various soft-switched DC-DC converter topologies are compared for the given specifications. Based on the soft-switching range, efficiency and other merits and demerits, a current-fed DC-DC converter configuration is selected. The performance of the selected topology is evaluated for the given specifications. Detailed analysis, a systematic design, simulation and the experimental results of the converter (200 W, operating at 100 kHz) are presented.
To achieve soft-switching for wide variation in input voltage and load while maintaining high efficiency has been a challenge, especially for the low voltage higher input current applications. The variation in pressure/flow of the fuel input to the fuel cells causes the variation in fuel cell stack voltage and the available power supplied to the load/utility line. It causes the converter to enter into hard switching region at higher input voltage and light load. A wide range soft-switched active-clamped current-fed DC-DC converter has been proposed, analyzed and designed and the experimental results (200 W, operating at 100 kHz) are presented.
The fuel-cell voltage varies with fuel pressure and causes the variation in the output voltage produced by the front-end DC-DC converter at the input of the next inverter stage and will affect the inverter operation. Therefore, the front-end DC-DC converter should be controlled to produce a constant voltage at the input of the inverter at varying fuel pressure. Small signal modeling and closed loop control design of the proposed wide range L-L type active-clamped current-fed DC-DC converter has been presented to adjust the duty cycle of the converter switches automatically with any variation in fuel pressure to regulate the output voltage of the converter at a specified constant value.
To convert the DC voltage output of the front-end DC-DC converter into utility AC voltage at line frequency and feeding current into utility line with low THD and high line power factor, an average current controlled inverter is designed. The complete power conditioning unit is connected to the single-phase utility line (208 V RMS, 60 Hz) and experimental results are presented. The system shows stable operation at varying reference power level.
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Vanderster, Daniel Colin. "Resource allocation and scheduling strategies using utility and the knapsack problem on computational grids." Thesis, 2008. http://hdl.handle.net/1828/328.
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Computational grids are distributed systems composed of heterogeneous computing resources which are distributed geographically and administratively. These highly scalable systems are designed to meet the large computational demands of many users from scientific and business orientations. This dissertation address problems related to the allocation of the computing resources which compose a grid.
First, the design of a pan-Canadian grid is presented. The design exploits the maturing stability of grid deployment toolkits, and introduces novel services for efficiently allocating the grids resources. The challenges faced by this grid deployment motivate further exploration in optimizing grid resource allocations.
The primary contribution of this dissertation is one such technique for allocating grid resources. By applying a utility model to the grid allocation options, it is possible to quantify the relative merits of the various possible scheduling decisions. Indeed, a number of utility heuristics are derived to provide quality-of-service policies on the grid; these implement scheduling policies which favour efficiency and also allow users to intervene with urgent tasks. Using this model, the allocation problem is then formulated as a knapsack problem. Formulation in this manner allows for rapid solution times and results in nearly optimal allocations.
The combined utility/knapsack approach to grid resource allocation is first presented in the allocation of single resource type, processors. By evaluating the approach with novel utility heuristics using both random and real workloads, it is shown to result in efficient schedules which have characteristics that match the intended policies.
Additionally, two design and analysis techniques are performed to optimize the design of the utility/knapsack scheduler; these techniques play a significant role in practical adoption of the approach.
Next, the utility/knapsack approach is extended to the allocation of multiple resource types. This extension generalizes the grid allocation solution a wider variety of resources, including processors, disk storage, and network bandwidth. The general technique, when combined with new heuristics for the varied resource types, is shown to result in improved performance against reference strategies.
This dissertation concludes with a novel application of the utility/knapsack approach to fault-tolerant task scheduling. Computational grids typically feature many techniques for providing fault tolerance to the grid tasks, including retrying failed tasks or replicating running tasks. By applying the utility/knapsack approach, the relative merits of these varied techniques can be quantified, and the overall number of failures can be decreased subject to resource cost considerations.
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Sanders, Adrian. "Exploring the utility of computer technologies and human faculties in their spatial capacities to model the archaeological potential of lands: Holocene archaeology in northeast Graham Island, Haida Gwaii, British Columbia, Canada." Thesis, 2009. http://hdl.handle.net/1828/1821.
Full textAbstract:
Search strategies have been a central activity within archaeology, varying with the
types of questions being addressed, technological tools available, and theoretical proclivity of
the investigator. This thesis will test the utility of LiDAR remote sensing and GIS spatial
technologies against a phenomenological field methodology. Modeled lands include select
areas within Northeast Graham Island, Haida Gwaii, located off the northern Pacific coast of
Canada. The time scale in question includes the entire Holocene.
A history of the landscape concept is evaluated, fleshing out a decisive working term.
An Interdisciplinary Multilogical Framework is devised, linking the two modeling methods
with a breadth of information sources on the physical and cultural attributes of landscapes.
This dialectic approach culminates in a holistic anthropological practice, and grounds for
interpretive analysis of the archaeological record. The role of archaeological predictive
modeling in the contemporary socio-political context of heritage management in British
Columbia is discussed.
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Liu, Xuan. "Essays in agricultural business risk management." Thesis, 2021. http://hdl.handle.net/1828/13258.
Full textAbstract:
Insurance has been considered as a useful tool for farmers to mitigate income volatility. However, there remain concerns that insurance may distort crop production decisions. Positive mathematical programming (PMP) models of farmers’ cropping decisions can be applied to study the effect of agricultural business risk management (BRM) policies on farmers’ decisions on land use and their incomes. Before being used to examine agricultural producer responses to policy changes under the expected utility framework, the models must first be calibrated to obtain the values of the risk aversion coefficient and the cost function parameters. In chapter 2, three calibration approaches are compared for disentangling the risk parameter from the parameters of the cost function. Then, in chapter 3, to investigate the impacts on production incentives of changes in Canada’s AgriStability program, farm management models are calibrated for farms with different cost structures for three different Alberta regions. Results indicate that farmers’ observed attitudes towards risk vary with cost structure. After joining the program, all farmers alter their land allocations to some extent. The introduction of a reference margin limit (RML) in the AgriStability program under Growing Forward 2 (2013-2018), which was retained in the replacement legislation until 2020, has the most negative impact on farmers with the lowest costs. The removal of RML significantly increases the benefits to low-cost farmers.
Traditional insurance products provide financial support to farmers. However, for fruit farmers, the products’ quality can be greatly affected by the weather conditions during the stage of fruit development and ripening, which may lead to quality downgrade and a significant loss in revenue with little impacts on yields. Hence, chapters 4 and 5 investigate the conceptual feasibility of using weather-indexed insurance (WII) to hedge against non-catastrophic, but quality-impacting weather conditions to complement existing traditional insurance.
Prospect theory is applied to analyze a farmer’s demand for WII. The theoretical model demonstrates that an increase in the volatility of total revenue and the revenue proportion from blueberries increases the possibility of farmers’ participation in WII. On the other hand, the increase in the value loss aversion coefficient and WII’s basis risk leads to less demand for WII.
To design a WII product for blueberry growers to hedge against quality risk, a quality index must be constructed and the relationship between key weather conditions, such as cumulative maximum temperature and cumulative excess rainfall, and the quality index should be quantified. The results from a partial least squares structural equation modeling (PLS-SEM) show that the above goals are achievable. Further, rainfall and temperature can be modelled via a time-series model and statistical distributions, respectively, to provide reasonable estimates for calculating insurance premia.Graduate
2022-08-05
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Gagnon, Stéphanie. "Utilité de pictogrammes pour améliorer la santé bucco-dentaire et le comportement des enfants autistes." Thèse, 2013. http://hdl.handle.net/1866/10076.
Full textAbstract:
Introduction : Les soins dentaires des enfants autistes représentent un défi pour les parents et les dentistes. Des efforts doivent être faits afin d’améliorer les mesures préventives et l’éducation des parents.
Recension des écrits : L’autisme se définit comme un désordre qualitatif de l’interaction sociale et de la communication, par des comportements ou activités répétitifs et stéréotypés et par de l’hypersensibilité aux stimuli corporels. Le manque de coopération pour le brossage des dents constitue un obstacle au maintien d’une bonne hygiène bucco-dentaire chez l’enfant autiste.
Problématique : L’enfant autiste représente un défi pour le dentiste, mais aussi pour ses parents lors des mesures quotidiennes d’hygiène. Peu d’études cliniques se sont penchées sur l’utilité des pictogrammes dans la dispensation des soins dentaires quotidiens et professionnels de cette clientèle.
Hypothèse de recherche : L’utilisation de pictogrammes améliore la coopération des enfants autistes pour les soins dentaires quotidiens et chez le dentiste, leur procurant une meilleure hygiène bucco-dentaire.
Matériels et méthodes : Selon un devis d’étude expérimentale randomisée, 17 participants expérimentaux (avec pictogrammes) et 18 participants contrôles ont été recrutés au CHU Sainte-Justine, puis évalués à 6 reprises sur 12 mois. L’hygiène fut notée par l’indice de plaque et le comportement par l’échelle de Frankl.
Résultats : Aucune différence significative n’a été notée entre le groupe expérimental et contrôle pour l’indice de plaque et l’échelle de Frankl. Globalement, une baisse de l’indice de plaque et une amélioration du comportement ont été notées pour les deux groupes et ce, pendant la période d’étude de 12 mois.
Conclusion : Les résultats de la présente étude ne permettent pas d’affirmer que les pictogrammes contribuent à améliorer l’hygiène bucco-dentaire et le comportement des enfants autistes lors des soins dentaires quotidiens et professionnels.Introduction : Dental care for children with autism is a challenge for parents and dentists. Efforts should be made to improve preventive measures and education of parents. Literature review : Autism is defined as a qualitative disorder of social interaction and communication, repetitive and stereotyped behaviors or activities and by a hypersensitivity to physical stimuli. The lack of cooperation for brushing teeth prevents good oral hygiene in autistic children. Problem : The autistic child is a challenge for the dentist, but also for his parents during daily hygiene. Few clinical studies have examined the utility of pictograms in the delivery of daily dental care and professional. Hypothesis : The use of pictograms improves cooperation of autistic children at the dentist and at home for daily dental care, giving them a better oral hygiene. Materials and methods : According to an experimental randomized design, 17 experimental subjects (with pictograms) and 18 control subjects were recruited at the CHU Sainte-Justine, then reassessed six times over a period of 12 months. Hygiene was marked by a plaque index and the behavior by the Frankl scale. Results : No significant difference was observed between the experimental and control group for the plaque index and the Frankl scale. Overall, lower plaque index and improved behavior were noted for both groups over the 12-months study period. Conclusion : The results of this study do not confirm that the pictograms help to improve oral health and behavior of children with autism in daily and professional dental care.
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Lefebvre, Judith. "Évolution de la qualité des années vécues entre 45 et 70 ans : espérance de vie partielle sans incapacité au Canada, de 1994 à 2014." Thèse, 2018. http://hdl.handle.net/1866/20102.
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