A celebração de negócios jurídicos é fundamental para a Administração Pública. Sem ela, não só sua interação com a sociedade seria precária, como também não conseguiria cumprir com a maior parte dos princípios que regem seu regime jurídico, pois não se mostra autossuficiente. Para formalizar tais negócios jurídicos, o instrumento utilizado é o contrato. Parte da doutrina defende que tais instrumentos não se enquadram adequadamente no conceito de contrato por conta das peculiaridades que os cingem quando uma das partes pertence à Administração Pública ou está a exercer função que lhe foi delegada pelo Poder Público. De outro lado, aqueles que concordam com a classificação desses instrumentos como contratos dividem-se entre os que acreditam existir um regime jurídico único para todos os contratos da Administração Pública e aqueles que defendem a existência de duas modalidades de contratos: os contratos administrativos, regidos predominantemente pelo direito público, e os contratos privados da Administração Pública, que, tendo como objeto negócios jurídicos característicos da vida privada, são regidos predominantemente pelo direito privado. Somos partidários desta última corrente e, diante da escassa literatura pátria sobre os contratos privados da Administração Pública, nos propomos a analisá-los mais detidamente no presente estudo. Assim, dividimos este trabalho em cinco capítulos. No primeiro deles, apresentaremos nossas considerações iniciais sobre a matéria, fornecendo um apanhado do que a doutrina nacional e estrangeira já produziu sobre o assunto e de como se dividem as opiniões. Tendo em vista que os contratos regidos primordialmente pelo direito privado apresentam grande parte dos traços dos contratos privados, no segundo capítulo analisaremos as características mais relevantes das cláusulas típicas de direito público que integram os contratos administrativos. O terceiro capítulo, por sua vez, é dedicado à verificação da legislação brasileira e os respectivos dispositivos normativos pertinentes aos contratos privados da Administração Pública. No quarto capítulo nos debruçaremos sobre as decisões jurisprudenciais estrangeiras que marcaram o início da distinção entre as duas modalidades de contratos da Administração Pública e no quinto capítulo apresentaremos nossas conclusões, conjuntamente com algumas sugestões que acreditamos sejam pertinentes ao aperfeiçoamento do tratamento da matéria no Brasil. / The execution of legal businesses is essential for the Public Administration. Without it, not only its interaction with society would be precarious, but also could not comply with most of the principles governing their legal regime, as it is not show selfsufficient. In order to formalize such legal transactions, the instrument to used is the agreement. Part of the doctrine sustains that such instruments do not fit properly on the concept of agreement because of its peculiarities when one of the parties belongs to the Public Administration or is exercising function that has been delegated by the Public Power. On the other hand, those who agree with the classification of such instruments as agreements are divided between those who believe that there is a single legal regime for all the agreements executed by the Public Administration and those who advocate the existence of two \"modalities\" of agreements: the administrative agreements, predominantly governed by public law, and private agreements of the Public Administration, which having as subject legal businesses that are typical of the private life, are governed mainly by private law. We agree with this latter view, and because of the scarce literature on private agreements of the Public Administration, we propose to examine them more closely in this study. We have divided this paper into five chapters. In the first one, we will present our initial thoughts on the subject, providing an overview of what the national and foreign doctrine has produced on the subject and how the opinions are divided. Given that agreements governed by private law primarily present most of the characteristics of private agreements, in the second chapter we will analyze the most relevant characteristics of the typical clauses that integrate the administrative agreements. The third chapter, on its turn, is devoted to the verification of the Brazilian legislation and the respective applicable normative provisions pertaining to the private agreements of the Public Administration. In the fourth chapter we will lean over the foreign court decisions that became the landmarks of the beginning of the distinction between the two modalities of agreements of the Public Administration and in the fifth chapter we will present our findings, together with some suggestions that we believe are relevant to improving the handling of this matter in Brazil

<p>We have examined the stock development of acquired listed Swedish companies - from the years 1995 to 2005 - upon the official publication of the bid. Thereafter we further investigated if there is a difference in the stock development between companies that are acquired by foreign investorscompared to Swedish investors. Also, a difference in the stock development could be due to the acquired firms’ industry classification and its company size, which we have been looking at.</p><p>In order to study the bid news impact on the share price, a quantitative study in the form of an event study has been done, where the abnormal return associated with the news has been measured.</p><p>The research shows that there indeed is a difference between companies acquired by foreign investors versus Swedish. As for industry classification, we find one out of six different industries standing out. The comparisons within the remaining industries shows similar results to the comparison of Swedish and foreign companies we mentioned before. In terms of company size,larger companies have shown a lower cumulative abnormal return compared to smaller companies. Furthermore the research also shows that larger the acquired companies are smaller the difference is in the cumulative abnormal return.</p> / <p>Vi har undersökt aktieutvecklingen hos uppköpta börsnoterade svenska företag, mellan 1995 till 2005, vid offentliggörandet av budet. Därefter undersöker vi även om det finns en skillnad i aktieutvecklingen mellan företag som blir uppköpta av utländska aktörer jämfört med de som blir uppköpta av svenska. Vidare skulle en visad skillnad i aktieutvecklingen kunna bero på de uppköpta företagens branschtillhörighet respektive företagens storlek, vilket vi har tittar närmare på.För att studera budnyhetens inverkan på börskursen har en kvantitativ undersökning i form av en event studie gjorts, där den abnormala avkastningen i samband med budnyheten mätts.Resultatet visar att det finns en skillnad mellan företag som blivit uppköpta av utländska aktörer och svenska. Vad gäller branschindelningen finner vi en bransch som utmärker sig gentemot de andra. Resterande branscher sammanfaller med jämförelsen av svenska och utländska företag. Storleksmässigt visade större företag allmänt en lägre kumulativ avkastning än mindre. Vidare är skillnaden mindre, mellan företag köpta av svenska aktörer och utländska, ju större företagen är.</p>

We have examined the stock development of acquired listed Swedish companies - from the years 1995 to 2005 - upon the official publication of the bid. Thereafter we further investigated if there is a difference in the stock development between companies that are acquired by foreign investorscompared to Swedish investors. Also, a difference in the stock development could be due to the acquired firms’ industry classification and its company size, which we have been looking at. In order to study the bid news impact on the share price, a quantitative study in the form of an event study has been done, where the abnormal return associated with the news has been measured. The research shows that there indeed is a difference between companies acquired by foreign investors versus Swedish. As for industry classification, we find one out of six different industries standing out. The comparisons within the remaining industries shows similar results to the comparison of Swedish and foreign companies we mentioned before. In terms of company size,larger companies have shown a lower cumulative abnormal return compared to smaller companies. Furthermore the research also shows that larger the acquired companies are smaller the difference is in the cumulative abnormal return. / Vi har undersökt aktieutvecklingen hos uppköpta börsnoterade svenska företag, mellan 1995 till 2005, vid offentliggörandet av budet. Därefter undersöker vi även om det finns en skillnad i aktieutvecklingen mellan företag som blir uppköpta av utländska aktörer jämfört med de som blir uppköpta av svenska. Vidare skulle en visad skillnad i aktieutvecklingen kunna bero på de uppköpta företagens branschtillhörighet respektive företagens storlek, vilket vi har tittar närmare på.För att studera budnyhetens inverkan på börskursen har en kvantitativ undersökning i form av en event studie gjorts, där den abnormala avkastningen i samband med budnyheten mätts.Resultatet visar att det finns en skillnad mellan företag som blivit uppköpta av utländska aktörer och svenska. Vad gäller branschindelningen finner vi en bransch som utmärker sig gentemot de andra. Resterande branscher sammanfaller med jämförelsen av svenska och utländska företag. Storleksmässigt visade större företag allmänt en lägre kumulativ avkastning än mindre. Vidare är skillnaden mindre, mellan företag köpta av svenska aktörer och utländska, ju större företagen är.

The trucking industry is vitally important to the economy, providing an essential service by transporting goods between businesses and consumers. The less-than-truckload (LTL) industry is an important segment, serving businesses that ship quantities between 150 lbs and 10,000 lbs. Large LTL carriers use thousands of drivers to move loads between terminals in their network, and each driver may be used for multiple dispatches between rest periods. Driver wages are a major component of transportation costs. Consequently, cost-effective driver management is of crucial importance for the profitability of LTL carriers. This thesis investigates a variety of issues related to driver management. In this thesis, we describe a dynamic driver scheduling scheme developed for a large U.S. LTL carrier. Dynamic driver scheduling is challenging because drivers must abide by a complex set of rules, including government and union regulations, and trucking moves are not pre-scheduled. The technology developed combines greedy search with enumeration of time-feasible driver duties, and is capable of generating cost-effective schedules covering 15,000 20,000 loads in minutes. One of the key tactical questions faced by an LTL carrier is how many drivers to locate at each terminal. Unionized carriers have bid drivers that can only move loads between their domicile and a designated region. The developed allocation technology determines the number of drivers to allocate to each terminal as well as the designated region for bid drivers. Computational experiments based on real-life dispatch data demonstrate the effectiveness of our domiciling methodology, and show that union rules may result in substantially larger driver fleets, in some cases up to 50% larger. Finally, we investigate a fundamental question related to driver management in order to obtain some fundamental insights: determining the minimum number of drivers required to cover a set of loaded moves. The problem is shown to be polynomially solvable without any restrictions on driver schedules. For variants with restrictions, several easily computable lower bounds are derived, integer programming formulations are presented, and fast heuristics are designed and analyzed. A computational study provides insights into the quality of the lower bounds and heuristic solutions.

Το πρόβλημα της βελτιστοποίησης ερωτημάτων πολλαπλών κριτηρίων σε βάσεις δεδομένων είναι ένα αρκετά δύσκολο και ενδιαφέρον ερευνητικά πρόβλημα, διότι χαρακτηρίζεται από αντικρουόμενες απαιτήσεις. Κάθε βήμα στην απάντηση ενός ερωτήματος μπορεί να εκτελεστεί με παραπάνω από έναν τρόπους. Για την επίλυση τέτοιου είδους ερωτημάτων έχουν προταθεί διάφοροι αλγόριθμοι, με πιο πρόσφατους τους: Mariposa, M' και Generate Partitions. Ο Mariposa και ο Μ' εφαρμόζονται στην βάση δεδομένων Mariposa, η οποία δίνει την δυνατότητα στον χρήστη να καθορίζει την επιθυμητή εξισορόπηση (tradeoff) καθυστέρησης/κόστους για κάθε ερώτημα που θέτει. Ο αλγόριθμος Mariposa ακολουθεί μία προσέγγιση απληστίας (greedy approach) προσπαθώντας σε κάθε βήμα να μεγιστοποιήσει το «κέρδος» ενώ ο Μ' χρησιμοποιεί σύνολα βέτιστων κατά Pareto λύσεων για την επιλογή του επόμενου βήματος στην θέση του κριτηρίου απληστίας. Τέλος, ο αλγόριθμος Generate Partition χρησιμοποιεί έναν διαχωρισμό του χώρου απαντήσεων χρησιμοποιώντας δομές R-trees πετυχαίνοντας πολύ καλή απόδοση. / The optimization of queries in distributed database systems is known to be subject to delicate trade-offs. For example, the Mariposa database system allows users to specify a desired delay-cost tradeoff (that is to supply a decreasing function u(d) specifying how much the user is willing to pay in order to receive the query results within time d) Mariposa divides a query graph into orizontal strides analyzes each stride, and uses a greedy heuristic to find the best plan for all strides.

Universiẗat, FB Wirtschaftswiss., Diss.--Hamburg, 2000. / Literaturverz. S. [229] - 254.

abstract: Horizontal Directional Drilling (HDD) is a growing and expanding trenchless method utilized to install pipelines from 2 to 60 inch diameters for lengths over 10,000 foot. To date, there are not many public documents where direct costs and bid prices incurred by HDD installations are available and analyzed. The objective is to provide a better understanding of the factors affecting the bid prices of these projects. The first section of the thesis analyzes how project parameters such as product diameter, bore length and soil conditions affect the bid price of water and wastewater pipeline installations using HDD. Through multiple linear regressions, the effect of project parameters on bid prices of small, medium and large rigs projects is extracted. The results were further investigated to gain a better understanding of bid factors that influence the relationship between total cost and the project parameters. The second section uses unit cost, based on bid prices, to compare the costs incurred by defined categories. Parameters such as community type, product type, soil conditions, and geographical region were used in the analysis. Furthermore, using average unit cost from 2001 to 2009, HDD project cost trends are briefly analyzed against the main variations of the US economy from the same time horizon by using economic indicators. It was determined that project geometric factors influence more the bid price of small rig projects than large rig projects because external factors including market rates and economic situation have an increasing impact on bid prices when rig size increases. It was observed that bid price variation of HDD projects over years followed the same trend as the US economic variation described by economic indicators. / Dissertation/Thesis / M.S. Construction 2010

Submitted by Lucas Soares (lucas.sfsoares@gmail.com) on 2017-06-29T16:45:38Z No. of bitstreams: 1 Dissertação EPGE Lucas Furtado - Versão Final.pdf: 6628875 bytes, checksum: 83adc4fb440993af6ad3fc9d9348eb74 (MD5) / Approved for entry into archive by GILSON ROCHA MIRANDA (gilson.miranda@fgv.br) on 2017-07-04T13:32:35Z (GMT) No. of bitstreams: 1 Dissertação EPGE Lucas Furtado - Versão Final.pdf: 6628875 bytes, checksum: 83adc4fb440993af6ad3fc9d9348eb74 (MD5) / Made available in DSpace on 2017-07-05T19:27:19Z (GMT). No. of bitstreams: 1 Dissertação EPGE Lucas Furtado - Versão Final.pdf: 6628875 bytes, checksum: 83adc4fb440993af6ad3fc9d9348eb74 (MD5) Previous issue date: 2017-05-12 / The Oil industry is known to be one of the most profitable industries in the world. A key challenge for all oil-production country is to stay attractive for business without giving up the extreme large oil rents. Designing a good fiscal system is a necessary condition in order to maintain the balance between companies and Government goals or requirements. In 2013, Brazil legislation changed in other to implement a new production share fiscal system that would coexist with the 1998 concession system. This type o change is easily seen in the regulatory framework history of other countries. There is a dedicated section with examples of regulatory mechanisms for rent capture. This work focus on the study of a country oil and gas fiscal system and its influence on the E&P project attractiveness. An engineering development model is designed for a presalt carbonate reservoir located at ultra deep waters (the type of reservoir covered by the new partition share contract). It is also discussed that the difference among all the fiscal system is, majorly, the oil property and the payment method. Apart from that, one can make the outputs of a concession system become equivalent to a production sharing system simply by changing the inputs. A cash flow curve is calculated for each engineering model for different field volumes in each type of contract. This mean that the cash flow curve is more than a simple mathematical function, its is modeled in order to reflect the operational reality of an oil field. Each cash flow, and its net present value, are linked with its fiscal system characteristics. Finally, the differences between the cash flow net present value are the base for a critical analysis about the each fiscal system. At the final section, an analysis is performed in order to compare different fiscal systems on an exploratory framework. Finally, it is discussed the exploratory risks and its influence on the attractiveness of private capital in public bids. / O montante financeiro advindo das atividades de exploração e produção (E&P) de petróleo tornam esta indústria uma das rentáveis do mundo. Manter um ambiente de negócios atrativos para o investimento privado no país sem prejudicar a captura de renda do Governo é um desafio atual de todos os países produtores. Desenhar um bom regime fiscal é condição primordial para equilibrar a balança de objetivos do Governo e da indústria. Recentemente o Brasil passou por uma mudança nos termos do seu regime fiscal. Em 2013 foi realizado o primeiro leilão de partilha. Mudanças no regime fiscal são comuns na história de diversos países. Há um capítulo dedicado à descrição de exemplo de mecanismos utilizados no Brasil e no mundo. Esta dissertação tem como foco o estudo do regime fiscal e sua influência na atratividade de projetos de E&P. Mais especificamente, modelou-se a concepção de engenharia para desenvolvimento de um campo de produção em reservatório carbonático pré-sal localizados em águas ultraprofundas (província abrangida pelo novo marco regulatório). Também é discutido o fato de que a maior diferença entre os regimes fiscais é a propriedade do óleo e a forma de remuneração da empresa. Fora isto, é possível desenhar um contrato de concessão que produza os mesmos resultados financeiros esperados de um contrato de partilha. A partir da concepção da curva de produção gerada pelo modelo de engenharia, foi possível construir um fluxo de caixa em cada cenário de volume disponível. Ou seja, o fluxo de caixa, mais do que ser uma simples função financeira, foi modelada para refletir a realidade operacional de um campo real de produção. Este fluxo de caixa, e seu valor presente líquido, está diretamente ligado às características do regime fiscal. É através das diferenças entre as análises que se faz uma reflexão crítica acerca dos regimes. Por fim, é feita a comparação entre regimes fiscais com diferentes características levando-se em conta algumas premissas de portfólio eficiente. Para tal aborda-se o tema de risco exploratório e sua influência na atratividade de investimento privado em leilões de blocos exploratórios.

abstract: Research literature were reviewed regarding the land-use economic theory of bid-rent curves and the modern emergence of polycentric cities. Two independent Geographic Information System (GIS) analyses were completed to test the hypothesis that bid-rent methodology could be used to tease out trends in residential locations, and hence contribute to present-day urban planning efforts. Specifically, these analyses sought to address the relationships between place of work and place of residence in urban areas. A generalizable set of benchmarks for identifying urban employment centers were established for 10 study cities in the United States, and bid-rent curves were calculated under separate monocentric assumptions and polycentric assumptions. The results presented wide variations in real bid-rent curves that a) overall deviated dramatically from the hypothetical distribution of rent, and b) spoke to the unique residential patterns in individual U.S. cities. The implications of these variations were discussed with regard to equitable housing for marginalized groups and access to centers of employment. / Dissertation/Thesis / M.U.E.P. Geography 2014

nÃo hà / O objetivo da presente dissertaÃÃo à medir os impactos da introduÃÃo da modalidade do PregÃo EletrÃnico na PolÃtica de Compras Governamentais do Estado do CearÃ, buscando verificar se o fato resultou em economia para os cofres pÃblicos, como tambÃm estimar a agilidade do tempo de conclusÃo dos processos licitatÃrios. Para tanto se buscou estabelecer uma comparaÃÃo entre a economia gerada pelas modalidades de Carta Convite e Tomada de PreÃo em perÃodo anterior ao PregÃo (1994/1999) e apÃs este (2007/2010). Para estimar a eficÃcia do pregÃo eletrÃnico com as supracitadas modalidades de licitaÃÃo foram utilizados dados obtidos com a aquisiÃÃo de bens da mesma natureza nos ÃrgÃos pÃblicos estaduais, e tambÃm pesquisa nos sites do MinistÃrio do Planejamento, OrÃamento e GestÃo, e do Sistema do Banco do Brasil. Utilizou-se para anÃlise, estatÃstica de regressÃo simples linear. O modelo proposto utilizou trÃs variÃveis: preÃo de aquisiÃÃo, tempo de permanÃncia do processo e nÃmero de participantes, e uma dummy de qualidade. Analisando estas variÃveis, verifica-se que o tempo de permanÃncia e que o nÃmero de participantes nÃo sÃo estatisticamente relevantes para o preÃo de aquisiÃÃo, demonstrando que a modalidade da licitaÃÃo nÃo aparece como fator determinante da eficiÃncia. Jà a dummy de qualidade mostrou efeito positivo sobre a aquisiÃÃo de bens de tecnologia. / The purpose of this paper is to measure the impact of the introduction of Electronic Auction mode in Government Procurement Policy of the State of CearÃ, seeking to verify the fact resulted in savings for the public coffers, but also estimate the speed of the completion time of processes bidding. For that we sought to establish a comparison between the savings generated by the modalities of Invitation Letter and Decision-Price in the period prior to Auction (1994/1999) and after that (2007/2010). To estimate the efficiency of electronic trading with the above methods of procurement used data obtained with the purchase of the same nature in the public state, and also research in sites, the Ministry of Planning, Budget and management and System of the Bank of Brazil. Was used for analysis, simple linear regression statistics. The proposed model used three variables: purchase price, length of stay and number of process participants, and a dummy of quality. Analyzing these variables, it appears that the length of stay and the number of participants are not statistically significant for the purchase price, showing that the mode of bidding does not appear as determinant of efficiency. Since the dummy showed positive effect of quality on the acquisition of property.