Com o objetivo de analisar a rentabilidade econômica da produção de mudas de alface produzidas em bandejas com diferentes volumes de substrato e formato de célula, foram realizados levantamentos de custos de um produtor de mudas localizado no estado de São Paulo, nas safras de verão e de inverno. Para avaliar os custos de produção para cada safra de cultivo, foi usado a metodologia adotada pelo Centro de Estudos Avançados em Economia Aplicada (CEPEA), onde se calcula o Custo Total de produção pela soma entre o Custo Anual de Recuperação do Patrimônio (CARP) e o Custo Operacional (CO). O CARP é uma metodologia que considera o fator depreciação e custo de oportunidade do capital imobilizado para aquisição dos bens envolvidos, e o CO envolve todos os custos operacionais da atividade (viveiro de produção de mudas). O custo total de produção por área (m2), custo total de produção por muda e custo total de produção por bandeja foram superiores na safra de inverno em relação à safra de verão. Para o custo de produção por muda, os valores obtidos seguiram a seguinte ordem (R$): 84 células > 105 células > 128 células achatada alta > 128 células achatada baixa > 128 células cônicas > 200 células cônicas. Já para o custo de produção por bandeja, a ordem foi a seguinte: 84 células > 105 células > 128 células achatada alta > 128 células achatada baixa > 200 células cônicas > 128 células cônicas. Para o lucro da atividade, a ordem dos lucros foi (R$): 128 células achatada alta > 128 células achatada baixa > 84 células > 105 células > 200 células cônicas > 128 células cônicas. Além da rentabilidade econômica, dois experimentos foram conduzidos no viveiro especializado na produção de mudas, durante os períodos de 25 de dezembro de 2015 a 3 de fevereiro de 2016 e 26 de janeiro a 26 de fevereiro de 2016. Os períodos de cultivo foram de 28 e 40 dias para o primeiro ciclo (mudas convencionais e \"mudões\", respectivamente) e de 31 dias para todas as bandejas, no segundo ciclo. Os experimentos (primeiro e segundo ciclo) foram instalados em delineamento experimental inteiramente casualizado com quatro repetições, sendo os tratamentos constituídos por 6 diferentes tipos de bandejas para produção de mudas (128 células com formato cônico,128 células achatada baixa, 128 células achatada alta, 84 células, 105 células e 200 células com formato cônico). As mudas convencionais são destinadas para a produção hidropônica com uso de berçário, e os \"mudões\" para sistemas de cultivo hidropônico sem uso de berçário. As características agronômicas avaliadas foram massas frescas e secas das partes aéreas e das raízes, área foliar, comprimento total, área superficial, diâmetro médio, volume total e número total de raízes. Para mudões, que são destinados ao cultivo hidropônico sem a utilização da fase de berçário, as bandejas de 105 células resultaram em mudas com crescimento similar àquelas produzidas em bandejas de 84 células. Através desses resultados é possível recomendar as bandejas de 105 células por possibilitarem maior rendimento por área ao produtor de mudas. As mudas produzidas em bandejas de 84 e 105 células foram mais desenvolvidas, em geral, no primeiro ciclo do que no segundo ciclo. Para mudas convencionais, de maneira geral, as bandejas de 200 células cônicas resultaram em menor desenvolvimento das plântulas comparadas às bandejas de 128 células cônicas, achatadas baixas e achatadas altas. As bandejas de 200 células cônicas resultaram em maior massa fresca da parte aérea, área foliar, comprimento total das raízes e número total de raízes no segundo ciclo em relação ao primeiro, devido ao período de cultivo ter sido superior no segundo ciclo (31 dias após a semeadura). / The objective of this study was to analyze the economic profitability of lettuce seedling production in trays with different cell volume and format through cost survey of production related to a grower located at Sao Paulo State. In order to evaluate the production costs for each growth period, the methodology adopted by Center of Advanced Studies on Applied Economy (CEPEA) was used to calculate the Total Cost of Production by the sum between the Annual Cost of Recovery (CARP) and the Operating Cost (CO). The CARP is a methodology that considers the factor of depreciation and opportunity cost of immobilized capital to acquire the assets involved, and the CO involves all operational costs of the activity (nursery of seedling production). The total cost of production per square meter (m2), total cost of production per seedling and total cost of production per tray were higher in the winter season as compared to the summer season. For the production cost per seedling, the values obtained were in the following order (R $): 84 cells> 105 cells> 128 flattened high cell> 128 flattened low cell> 128 conic cells > 200 conic cells. For the cost of production per tray, the order was as follows: 84 cells> 105 cells> 128 flattened high cells> 128 flattened low cells > 200 conic cells > 128 conic cells. For the profit of the activity, the order of profits was (R $): 128 flattened high cells > 128 flattened low cells > 84 cells> 105 cells> 200 conic cells> 128 conic cells. Besides the economic profitability, two experiments were conducted in the nursery specialized in the seedling production of lettuce during the periods of December 25, 2015 to February 3, 2016 and January 26 to February 26, 2016. The growing periods were 28 And 40 days for the first cycle (conventional seedlings and \"large seedlings\", respectively) and 31 days for all trays in the second cycle. The experiments (first and second cycle) were installed in a completely randomized experimental design with four replicates, and the treatments consisted of 6 different types of trays for seedlings production (128 cells with conical shape, 128 flattened low cells, 128 flattened high cells, 84 cells, 105 cells and 200 cells with conical shape). The conventional seedlings are destined for hydroponic production with the use of nursery phase and the \"large seedlings\" are used to hydroponic systems without of nursery phase. The agronomic characteristics evaluated were fresh and dry masses of the aerial parts and roots, leaf area, total length, surface area, mean diameter, total volume and total number of roots. For \"large seedlings\", trays of 105 cells resulted in seedlings with growth similar to those produced in trays of 84 cells. Through these results, it is possible to recommend the trays of 105 cells because they allow greater yield per square meter to the grower of seedlings. The seedlings produced in trays of 84 and 105 cells, in general, were more developed in the first cycle than in the second cycle. For conventional seedlings, the trays of 200 conical cells resulted in lower seedling development as compared to trays of 128 conical cells, flattened low and flattened tall cells. The trays of 200 conical cells resulted in higher fresh shoot mass, leaf area, total root length and total number of roots in the second cycle as compared to the first, because the growing period was higher in the second cycle (31 days after sowing).

Com o objetivo de analisar a rentabilidade econômica da produção de mudas de alface produzidas em bandejas com diferentes volumes de substrato e formato de célula, foram realizados levantamentos de custos de um produtor de mudas localizado no estado de São Paulo, nas safras de verão e de inverno. Para avaliar os custos de produção para cada safra de cultivo, foi usado a metodologia adotada pelo Centro de Estudos Avançados em Economia Aplicada (CEPEA), onde se calcula o Custo Total de produção pela soma entre o Custo Anual de Recuperação do Patrimônio (CARP) e o Custo Operacional (CO). O CARP é uma metodologia que considera o fator depreciação e custo de oportunidade do capital imobilizado para aquisição dos bens envolvidos, e o CO envolve todos os custos operacionais da atividade (viveiro de produção de mudas). O custo total de produção por área (m2), custo total de produção por muda e custo total de produção por bandeja foram superiores na safra de inverno em relação à safra de verão. Para o custo de produção por muda, os valores obtidos seguiram a seguinte ordem (R$): 84 células > 105 células > 128 células achatada alta > 128 células achatada baixa > 128 células cônicas > 200 células cônicas. Já para o custo de produção por bandeja, a ordem foi a seguinte: 84 células > 105 células > 128 células achatada alta > 128 células achatada baixa > 200 células cônicas > 128 células cônicas. Para o lucro da atividade, a ordem dos lucros foi (R$): 128 células achatada alta > 128 células achatada baixa > 84 células > 105 células > 200 células cônicas > 128 células cônicas. Além da rentabilidade econômica, dois experimentos foram conduzidos no viveiro especializado na produção de mudas, durante os períodos de 25 de dezembro de 2015 a 3 de fevereiro de 2016 e 26 de janeiro a 26 de fevereiro de 2016. Os períodos de cultivo foram de 28 e 40 dias para o primeiro ciclo (mudas convencionais e \"mudões\", respectivamente) e de 31 dias para todas as bandejas, no segundo ciclo. Os experimentos (primeiro e segundo ciclo) foram instalados em delineamento experimental inteiramente casualizado com quatro repetições, sendo os tratamentos constituídos por 6 diferentes tipos de bandejas para produção de mudas (128 células com formato cônico,128 células achatada baixa, 128 células achatada alta, 84 células, 105 células e 200 células com formato cônico). As mudas convencionais são destinadas para a produção hidropônica com uso de berçário, e os \"mudões\" para sistemas de cultivo hidropônico sem uso de berçário. As características agronômicas avaliadas foram massas frescas e secas das partes aéreas e das raízes, área foliar, comprimento total, área superficial, diâmetro médio, volume total e número total de raízes. Para mudões, que são destinados ao cultivo hidropônico sem a utilização da fase de berçário, as bandejas de 105 células resultaram em mudas com crescimento similar àquelas produzidas em bandejas de 84 células. Através desses resultados é possível recomendar as bandejas de 105 células por possibilitarem maior rendimento por área ao produtor de mudas. As mudas produzidas em bandejas de 84 e 105 células foram mais desenvolvidas, em geral, no primeiro ciclo do que no segundo ciclo. Para mudas convencionais, de maneira geral, as bandejas de 200 células cônicas resultaram em menor desenvolvimento das plântulas comparadas às bandejas de 128 células cônicas, achatadas baixas e achatadas altas. As bandejas de 200 células cônicas resultaram em maior massa fresca da parte aérea, área foliar, comprimento total das raízes e número total de raízes no segundo ciclo em relação ao primeiro, devido ao período de cultivo ter sido superior no segundo ciclo (31 dias após a semeadura). / The objective of this study was to analyze the economic profitability of lettuce seedling production in trays with different cell volume and format through cost survey of production related to a grower located at Sao Paulo State. In order to evaluate the production costs for each growth period, the methodology adopted by Center of Advanced Studies on Applied Economy (CEPEA) was used to calculate the Total Cost of Production by the sum between the Annual Cost of Recovery (CARP) and the Operating Cost (CO). The CARP is a methodology that considers the factor of depreciation and opportunity cost of immobilized capital to acquire the assets involved, and the CO involves all operational costs of the activity (nursery of seedling production). The total cost of production per square meter (m2), total cost of production per seedling and total cost of production per tray were higher in the winter season as compared to the summer season. For the production cost per seedling, the values obtained were in the following order (R $): 84 cells> 105 cells> 128 flattened high cell> 128 flattened low cell> 128 conic cells > 200 conic cells. For the cost of production per tray, the order was as follows: 84 cells> 105 cells> 128 flattened high cells> 128 flattened low cells > 200 conic cells > 128 conic cells. For the profit of the activity, the order of profits was (R $): 128 flattened high cells > 128 flattened low cells > 84 cells> 105 cells> 200 conic cells> 128 conic cells. Besides the economic profitability, two experiments were conducted in the nursery specialized in the seedling production of lettuce during the periods of December 25, 2015 to February 3, 2016 and January 26 to February 26, 2016. The growing periods were 28 And 40 days for the first cycle (conventional seedlings and \"large seedlings\", respectively) and 31 days for all trays in the second cycle. The experiments (first and second cycle) were installed in a completely randomized experimental design with four replicates, and the treatments consisted of 6 different types of trays for seedlings production (128 cells with conical shape, 128 flattened low cells, 128 flattened high cells, 84 cells, 105 cells and 200 cells with conical shape). The conventional seedlings are destined for hydroponic production with the use of nursery phase and the \"large seedlings\" are used to hydroponic systems without of nursery phase. The agronomic characteristics evaluated were fresh and dry masses of the aerial parts and roots, leaf area, total length, surface area, mean diameter, total volume and total number of roots. For \"large seedlings\", trays of 105 cells resulted in seedlings with growth similar to those produced in trays of 84 cells. Through these results, it is possible to recommend the trays of 105 cells because they allow greater yield per square meter to the grower of seedlings. The seedlings produced in trays of 84 and 105 cells, in general, were more developed in the first cycle than in the second cycle. For conventional seedlings, the trays of 200 conical cells resulted in lower seedling development as compared to trays of 128 conical cells, flattened low and flattened tall cells. The trays of 200 conical cells resulted in higher fresh shoot mass, leaf area, total root length and total number of roots in the second cycle as compared to the first, because the growing period was higher in the second cycle (31 days after sowing).

Geographical aspects of soccer players' origin - football academies: Comparison of Czechia and Serbia Abstract The goal of this thesis is to identify football academies in Czechia and Serbia since 1993. That accomplishes through presenting theoretical approaches of sport geography, then documents the globalisation of sport and especially the diffusion of football in space and time. It submits also characteristics of the successful football academy and finds out positive economical effects, which are generated by production of professional football players. The thesis researches in analytical part not only regional divide of the football academies, which are identified based on the place of birth, first youth and professional clubs and transfer value of the individual players, but the influence of different factors on success of club in national league as well. Key words: geographical aspects, origin, football academies, transfers, economic profitability Powered by TCPDF (www.tcpdf.org)

Landstinget Blekinge är en av Blekinge Läns största fastighetsägare och har idag ett stort elbehov på grund av sin energiintensiva verksamhet. I enlighet med organisationens miljöplan finns önskemål om att utreda möjligheterna att producera egen el med solceller. Denna utredning har som syfte att analysera egenproducerad solel utifrån lönsamhet och långsiktig hållbarhet.Rapporten utgår från att beskriva potential och ekonomiska förutsättningar för installation och drift av solcellsanläggningar i Sverige, framtida energisystem, samt hur en installation skulle förändra förutsättningarna för den dagliga verksamheten för Landstinget utifrån underhåll och säkerhet. Därefter presenteras en teoretisk projektering som resulterade i två olika solcellsanläggningar för att påvisa eventuell lönsamhet, kostnad för producerad el och en uppskattad årsproduktion i förhållande till Landstingets årliga elbehov. För att genomföra en adekvat projektering och få kunskap gällande underhåll och säkerhet genomfördes intervjuer med sakkunniga och företag som investerat i solcellsanläggningar. Resultatet presenteras som två olika anläggningar vilka skiljer sig åt map storlek och montering. Placeringsalternativ A) har en installerad toppeffekt på 101 kW med en investeringskostnad på 1 100 00 – 1 260 000 kr och placeringsalternativ B) en installerad toppeffekt på 145 kW till en kostnad av 1 500 000 – 1 740 000 kr. Trots dessa skillnader blev divergensen i återbetalningstid och kostnad för producerad el marginell, både med och utan solcellsstöd. Lönsamheten är mest fördelaktig vid ett beviljat solcellsstöd och ger större ekonomisk hållbarhet med en återbetalningstid på 9,8 – 11,3 år för placeringsalternativ A) och 10 – 11,5 år för placeringsalternativ B). I förhållande till en livslängd för anläggningarna på 25 – 30 år är det en lönsam investering.Med en större årsproduktion och lättare montering i förhållande till vindlast drogs en slutsats om att anläggningen på 145 kW skulle gynna Landstinget mest både ur ett ekonomiskt och hållbart perspektiv. Det genom att anläggningen efter återbetalningstiden genererar en högre kostnadsbesparing, samt resulterar i en större minskning av av koldioxidutsläpp till följd av en av högre årsproduktion. Flera källor visar att solceller är en del av ett framtida energisystem och långsiktigt hållbart pga fördelar gentemot minskade utsläpp av växthusgaser. Genom en eventuell investering i solceller kan Landstinget Blekinge stärka och utveckla ett grönt varumärke med en förnybar energiförsöjning i form av en solcellanläggning som bidrar till hållbar utveckling i enlighet med organisationes miljöplan, samt nationella och europeiska klimat- och miljömål. / The County Council of Blekinge is one of the county’s largest property owner and has today a great need of external distribution och electricity due to the organization’s energy intensive operations. According to the County Council’s environmental plan there is a desire to investigate the possibilities of producing electricity with solar cells. Therefore this feasibility study has the purpose of analyzing its profitability anf long-term sustainability following a possible future investment.The report proceeds to describe potential and economic prerequisites for solar cells in Sweden, future energy systems, as well as changing conditions for the daily operations regarding maintenance and safety with a solar cell plant. Thereafter, with the use of a theoretical projection of a solarplant that resulted in two different, the study determines possible profitability, cost of produced electricity and an estimated yearly production relative to the County Council’s need of external electricity. To perform an adequate projection and receive knowledge about maintenance and safety interviews with special advisers and organizations which have invested in solar cell plants interviews was performed. The result is presented as two solar plants that differs in size and mounting. Alternative A) has an installed power of 101 kW with a cost of investment of 1 100 00 – 1 260 000 SEK, and alternative B) har an installed power of 145 kW to the cost of 1 500 000 – 1 740 000 SEK. Despite the differences was the disparity in pay-back-time and cost of produced electricity fractional, with our without subsidies. The profitability is the most benefitial with an issued subsidy for solar cells and implicates a shorter pay-back-period of 9,8 – 11,3 years for alternative A) and 10 – 11,5 years for alternative B). Relative to the economic lifespan of a solar plant of 25 – 30 years it is a profitable investment.With a higher estimated yearly production and easier mounting considering wind load a conclusion was drawn that alternative B) with an installed power 145 kW would benefit the County Council the most from an economic and sustainable perspective. Because after the pay-back-period has ended it would generate more savings of money and a greater lowering of carbon dioxide emissions as a result of the higher annual production of electricity. Several sources show that solar cells are a aprt of a future energy system and is long-term sustainable due to benefits considering lowered carbon dioxide emissions. At an investment the County Council of Blekinge could strengthen and develop a green brand with a renewable energy supply with a solar cell plant which would contribute to sustainable development according to the organization’s environmental plan, as well as national and European climate and environmental goals.

The aim of this diploma thesis is to introduce the issues of evaluating public tenders generally and in a specific organization, to orientate in methods of multicriteria assessment analysis and by their means, to suggest suitable method of evaluating public tenders for the chosen organization. The theoretical part of this thesis deals with the description of the process of evaluating public tenders in the Czech Republic, as well as the explanation of multicriteria decision making concept and the description of methods of multicriteria assessment analysis according to the types of information required. The practical part provides the characteristic of the chosen organization, more precisely its divisions. It also provides the regulation that is followed by the organization when realizing competitive tendering. The analysis itself involves the overview of the tenders realized in the scope of activity of the chosen division in the period of five years, as well as the information on the used evaluating criteria. Out of this overview, the sample of the typical tenders is defined, on which the chosen methods of multicriteria assessment analysis are applied. The aim of this process is to assess the order of the variations after the application of the methods of multicriteria assessment analysis and the newly determined evaluating criterion, as well as compare the results with the originally given basic evaluating criterion. Point method, WSA method and TOPSIS method are used for the assessment. In the final part of this thesis, the recommendation on more frequent utilization of multicriteria assessment is suggested to the contract owner, more precisely using such criteria that would be more effective when using public funds.

Uppsatsen tar sikte på att undersöka hur dagens aktörer arbetar med grön fastighetsförädling och vilka olika incitament som finns för aktörer att arbeta med detta. Vidare analyserar vi konkret vilka incitament som finns för ägaren av bostadsrättsfastigheter respektive hyresrättsfastigheter att investera i solceller. Vad finns det för likheter och skillnader mellan dessa två upplåtelseformer? Uppsatsen konkretiserar undersökningen genom en fallstudie i samarbete med HSB MälarDalarna. Där genomförs investeringar genom montering av solceller på fastigheten Adils 17 i Borlänge för att öka den ekonomiska lönsamheten. Målet är att uppnå självförsörjning av energiförbrukningen för fastigheten samtidigt som det skall vara ekonomiskt hållbart med återbetalningstid och nettonuvärde i åtanke. Grönfastighetsförädling är något som ligger i tiden för de flesta fastighetsbolagen idag. Flertalet av aktörerna och bolagen på fastighetsmarknaden blir mer och mer medvetna om miljövänliga investeringar och har högt satta miljömål. Där kommer bland annat investeringar i solceller som ett alternativ in vilket idag är något som såväl privatpersoner som kommersiella aktörer antingen redan arbetar med att montera eller strävar mot att investera i. Uppsatsen visat att incitamenten för att arbeta med grön fastighetsförädling för olika aktörer är många. Där de flesta incitamenten är av likartad karaktär även om det finns olikheter för de olika upplåtelseformerna vid grönförädling av befintliga fastigheter. Incitamenten för investeringar i solceller beror till stor del på upplåtelseformerna, vilket uppsatsen påvisar. Det föreligger såklart likheter och skillnader kring incitamenten även för solceller beroende på om det är en bostadsrättsfastighet eller hyresrättsfastighet. Detta utreder och förklara uppsatsen också. För fallstudien beräknades olika alternativa monterings möjligheter på Adils 17 där de mest lönsamma sedan tagits vidare och analyseras ytterligare innan någon slutsats och rekommendation kring montering av solceller på fastigheten har givits. Återbetalningstiderna varierar något beroende på vilket val av montering som väljs, samma gäller för nettonuvärdet. Viktigt är att båda dessa nyckeltal är inom ramen för vad en fastighetsägare likt HSB kan tänka sig för att det skall vara värt att investera, då besparingarna på just denna fastighet från solcellerna tillfaller fastighetsägaren i sin helhet. Två av monterings möjligheterna har i denna uppsats genom fallstudien funnits ligga inom ramen för vad som är en god investering. / The thesis aims to investigate how today's actors work with green property refinement and what different incentives are there for actors to work with this. This is then to analyse in concrete terms what incentives are available for tenant-owner properties and tenant-owner properties to invest in solar cells. What are the similarities and differences between these two forms of lending. The thesis furthermore concretises investments in solar cells in the form of a case study in collaboration with HSB where the financial profitability for the installation of solar cells on the Adils 17 a property in Borlange is carried out. The goal is to achieve self-sufficiency of the energy consumption of the property while being financially sustainable with repayment time and net present value in mind. Green property refinement is something that lays within the time and modern thinking of most real estate companies today. Where most of the actors and companies become more and more aware of environmentally friendly investments and have high environmental goals. There, among other things, investments in solar cells come as an alternative, which today is something that both private individuals and commercial actors are either already working on to assemble or strive to invest in. The thesis has shown that the incentives for working with green property refinement for various actors are many. Where most of the incentives are of a similar character, although there are differences for different forms of tenure in green refinement of existing properties. The incentives for investments in solar cells largely depend on the which form of tenure the property is, as the thesis demonstrates. Of course, there are similarities and differences regarding the incentives for solar cells, depending on whether it is a condominium or rental property. This is also something the thesis will straighten out and explain more in detail. For the case study, various alternative mounting options were calculated on Adils 17 where the most profitable options where further analysed before any conclusion and recommendation regarding the installation of solar cells on the property could be given. The repayment times vary slightly depending on the choice of assembly chosen, the same applies to the net present value. It is important that both of these key figures are within the scope of what a property owner, like HSB MalarDalarna, expects them to be to invest. As the savings on this particular property from the solar cells are due to the property owner. Two of the mounting possibilities in this essay have been calculated to lay within the scope of what could be considered a good investment through the fall study.

El presente estudio de investigación buscó determinar el impacto de la toma de decisiones frente al Covid-19 en la rentabilidad de las estaciones de servicio en el distrito de Villa María del Triunfo, año 2020. En ese sentido, este estudio se divide en cinco capítulos. El capítulo I se concentra en el marco teórico, el cual abarca los antecedentes, la descripción situacional, la base teórica y su terminología en base a las palabras clave que se utilizaron en este escudriñamiento; el capítulo II es el plan de investigación, en el cual se encuentra la problemática y su formulación mediante interrogantes, la justificación y relevancia del trabajo, los objetivos, las limitaciones del estudio y las hipótesis; en el capítulo III se presenta la metodología de la investigación, la cual se conforma por la operacionalización de las variables, el diseño metodológico, la población y muestra y su realización y aplicación de sus instrumentos; el capítulo IV concierne al desarrollo de la investigación en el que se planteó el desarrollo de las entrevistas en profundidad y la encuesta. El capítulo V es el análisis de los resultados de la investigación en el que se agruparon el análisis de los hallazgos con la finalidad de validar las hipótesis junto con la discusión de dichos resultados. Finalmente se describieron las conclusiones y recomendaciones de los resultados encontrados. / The present research study sought to determine the impact of Covid-19 decision making on the profitability of taps in the district of Villa María del Triunfo, year 2020. In that sense, this study is divided into five chapters. Chapter I focuses on the theoretical framework, which covers the background, the situational description, the theoretical basis and its terminology based on the keywords used in this study; Chapter II is the research plan in which the problem and its formulation through questions, the justification and relevance of the work, the objectives, the limitations of the study and the hypotheses are found; Chapter III presents the research methodology, which consists of the operationalization of the variables, the methodological design, the population and sample and its implementation and application of its instruments; Chapter IV concerns the development of the research in which the development of the in-depth interviews and the survey were proposed. Chapter V is the analysis of the research results in which the analysis of the findings was grouped in order to validate the hypotheses together with the discussion of these results. Finally, the conclusions and recommendations of the results found were described. / Tesis

[pt] É constante o desafio das refinarias de petróleo na busca pela maximização da rentabilidade diante da natureza dinâmica das variáveis que afetam seus processos, como: demanda e especificações de produtos, qualidade de carga e preços de matéria-prima e derivados. Com a expectativa de mudanças nestas variáveis, um planejamento estratégico integrado para definir as necessidades de investimento em novas unidades de processo e ampliação de capacidade de unidades existentes pode contribuir para os melhores resultados do negócio de refino. Em face destas oportunidades e desafios, este trabalho propõe uma análise do planejamento de investimentos em refino, considerando o crescimento da demanda de diesel com ultra baixo teor de enxofre (S10) e também o crescimento plurianual da demanda de derivados, tendo como estudo de caso uma das maiores refinarias brasileiras. Como ferramenta de análise, foi utilizado um modelo matemático para planejamento integrado de refino de petróleo, que considera a otimização do planejamento operacional para definir as necessidades de investimento na refinaria, uma integração temporal, resultando em um modelo não linear inteiro misto (MINLP), cuja resolução utiliza uma lógica de decomposição em dois problemas integrados. Foi analisado o planejamento estratégico de refino, no horizonte de 19 anos e foram feitos vários cenários de demanda, com análises de sensibilidade para preços de petróleo e produtos, limite de importação e restrição de investimentos. Os resultados mostraram alinhamento com situação atual do mercado de derivados, com importação favorecida e com a expectativa de investimento mínimo em refino. / [en] It is a constant challenge for oil refineries the profitability maximization considering the dynamic nature of variables that affect their processes, such as demand and product specifications, feed quality and prices of raw materials and products. Expecting changes in such variables, an integrated strategic planning to define the needs for investment in new process units and capacity expansion of existing units can contribute to better results of the refining business. Given these opportunities and challenges, this dissertation proposes an analysis of refining investment planning, considering the increasing demand for ultralow sulfur diesel (S10) and also the multi-year growth of demand for oil products, performing a case study for one of the largest Brazilian refineries. As an analysis tool, it was used a mathematical model for integrated planning of oil refining, which considers the optimization of operational planning to set the investment needs in the refinery, a temporal integration, resulting in a mixed integer nonlinear model (MINLP), which resolution is based on a logic decomposition in two integrated problems. The strategic refining planning was analyzed on the 19 years horizon for different demand scenarios and some sensitivity analyses were carried out for oil and product prices, import limit and investment restrictions. The results were consistent with the current situation of the Brazilian derivatives market, characterized by favorable import and the minimum investment expected for refining.

Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-11-06T14:31:07Z No. of bitstreams: 1 PAULO CÉSAR DA SILVA LIMA - TESE (PPGRN) 2011.pdf: 2310870 bytes, checksum: e809895ded4befc59a0d2dfb97dc367c (MD5) / Made available in DSpace on 2018-11-06T14:31:07Z (GMT). No. of bitstreams: 1 PAULO CÉSAR DA SILVA LIMA - TESE (PPGRN) 2011.pdf: 2310870 bytes, checksum: e809895ded4befc59a0d2dfb97dc367c (MD5) Previous issue date: 2011-09-05 / O presente trabalho objetivou avaliar a influência da cobertura plástica de filme de polietileno de baixa densidade (PEBD), de 160 μm de espessura, transparente e de largura de 3 m, nas condições microclimáticas de parreirais cobertos na Região do Submédio São Francisco - RSMSF, na produtividade e rentabilidade econômica da viticultura de mesa da região. A pesquisa constou de quatro etapas experimentais conduzidas em parreirais produtivos de uva de mesa das variedades Festival e Itália Muscat em Petrolina, PE (09º 06’ 14’’ S; 40º 29’ 52” W; altitude 360 m) no período de outubro de 2009 a novembro de 2010. O período de cobertura ocorreu somente durante a fase de maturação e colheita da uva, como tradicionalmente é usada pelos produtores da região. Foram estudados três tratamentos: tratamento 1 – dossel sem cobertura plástica (SCob); tratamento 2 – cobertura plástica posicionada a 50 cm acima do dossel (CP50); e tratamento 3 - cobertura plástica posicionada a 100 cm acima do dossel (CP100). Cada parcela foi composta por sete plantas úteis e consecutivas de uma fileira de plantio. O monitoramento microclimático foi realizado através de sensores de temperatura e umidade relativa do ar, velocidade do vento e fluxos radiativos, instalados em três posições: abaixo do dossel na altura dos cachos, entre o dossel e a cobertura plástica e acima da cobertura na atmosfera. Os sensores foram conectados a sistemas automáticos de aquisição de dados CR23X e CR1000, programados para efetuar leituras a cada 2 segundos, gerar médias horárias e diárias e valores extremos diários. Os resultados indicaram que a cobertura plástica posicionada a 50 cm e 100 cm acima do dossel alterou o microclima do parreiral, aumentando a temperatura do ar e umidade relativa e reduzindo a velocidade do vento e reduzindo em até 40% a disponibilidade de radiação no seu interior. A transmissividade da cobertura plástica permitiu a passagem de 67% da radiação global (Rg); 55% da radiação ultravioleta (UV); 58% da radiação fotossinteticamente ativa (PAR), e 76% da radiação infravermelha (IR). No período de abril e maio, época do ano em que na região ocorrem maior nebulosidade e temperatura do ar mais amena, a cobertura plástica alterou o microclima do interior dos parreirais de uva Itália Muscat, com aumento de até 2 °C na temperatura do ar, aumento da umidade relativa em relação ao ambiente externo (com maior diferença sendo observado no dossel CP50), redução significativa da velocidade do vento, principalmente sobre o dossel, e da quantidade de cachos com defeitos no dossel CP50, em relação aos dosséis SCob e CP100. No período de setembro e outubro a produtividade física sob o dossel foi influenciada positivamente e contribuiu para uma maior disponibilidade de radiação quando comparado à cobertura do dossel CP50. O aumento da produtividade comercial, seja pela redução do número de cachos com defeitos observada no período de abril a maio no dossel CP50 ou pela maior disponibilidade de radiação no período de setembro a outubro no dossel CP100, foi determinante para a rentabilidade econômica positiva, mantendo a relação Benefício/Custo sempre maior do que 1, ampliando a margem de segurança da atividade. / This study aimed to evaluate the influence of the plastic cover film of low density polyethylene (LDPE), 160 mm thick, transparent and width of 3 m, the microclimatic conditions of the vineyards covered in the region Submédio São Francisco - RSMSF, productivity and economic profitability of viticulture table in the region. The research consisted of four experimental stages conducted in vineyards production of table grape varieties Festival and Italy Muscat in Petrolina, Pernambuco (09 ° 06 '14''S, 40 º 29' 52 "W, altitude 360 m) during October 2009 to November 2010. The coverage period occurred only during the ripening and harvesting of the grapes, as traditionally used by local farmers. Was studied three treatments: treatment 1 - no plastic cover canopy (SCob), treatment 2 - plastic cover positioned 50 cm above the canopy (CP50) and treatment 3 - plastic cover positioned 100 cm above the canopy (CP100). Each research plot consisted of seven consecutive useful plants and a row of planting. The microclimatic monitoring was performed by temperature sensors and relative humidity, wind speed and radiative flows, installed in three locations: beneath the canopy at the time of the clusters between the canopy and the plastic cover over the cover and the atmosphere. The sensors were connected to automatic data acquisition CR23X and CR1000, programmed to perform readings every 2 seconds to generate hourly and daily averages and extreme values daily. The results indicated that the plastic cover positioned at 50 cm and 100 cm above the canopy changed the microclimate of the vineyard, increasing the air temperature and relative humidity and reducing wind speed and reducing up to 40% availability of radiation inside. The transmissivity of the plastic cover allowed the passage of 67% of global radiation (Rg), 55% of the ultraviolet (UV), 58% of photosynthetic active radiation (PAR), and 76% of infrared radiation (IR). Between April and May, time of year that occur in the region increased cloudiness and air temperature more gently, the plastic has changed the microclimate of the interior of Italy Muscat grape vineyards, with up to 2 ° C in air temperature , increased relative humidity in relation to the external environment (with the main difference being observed in the canopy CP50, a significant reduction in wind speed, especially on the canopy, and the amount of defect clusters with CP50 in the canopy compared to canopies Scob and CP100. During September and October the physical productivity under the canopy was positively influenced and contributed to a greater availability of radiation when compared to canopy cover CP50. The increased business productivity, whether by reducing the quantity of clusters with defects observed during the April and May in the canopy CP50 or by increased availability of light in September and October period in canopy CP100, was decisive to positive economic return of the activity, making the benefit / cost ratio remained always greater than 1 widening of the margin of safety activity.