Modelo AC para el despacho combinado de contratos bilaterales y bolsa de energía considerando restricciones de seguridad

Reliability is a key aspect in power system design and planning. Maintaining a reliable power system is a very important issue for their design and operation. Under the new competitive framework of the electricity sector, power systems find ever more and more strained to operate near their limits. Under this new scenario, it is crucial for the system operator to use tools that facilitate an energy dispatch that minimizes possible power cuts. This paper presents a mathematical model to calculate an energy dispatch that considers security constraints (single contingencies in transmission lines and transformers). The model involves pool markets and fixed bilateral contracts. Traditional methodologies that include security constraints are usually based in multistage dispatch processes. In this case, we propose a single-stage model that avoids the economic inefficiencies which result when conventional multi-stage dispatch approaches are applied. The proposed model includes an AC representation of the transport system and allows calculating the cost overruns incurred in due to reliability restrictions. We found that complying with fixed bilateral contracts, when they go above certain levels, might lead to congestion problems in transmission lines.

Uma pesquisa sobre a opinião pública sobre incentivos financeiros para doação de óvulos no Brasil

Objective: The objective of this study was to assess the opinions of the Brazilian population about incentives for oocyte donation. Methods: A cross-sectional descriptive approach was used to consult the Brazilian public. The data collection involved the use of a structured questionnaire about legal and ethical issues surrounding oocyte donation. Individuals were randomly selected from the general population using different e-mail lists. Potential participants were contacted by e-mail and invited to participate in the study by completing an online web survey. Results: A total of 1,565 people completed the survey, including 1,284 women(82%) and 281 men(18%). Among the respondents, 1,309(83.6%) were university graduates, 1,033(66%) had a personal income ≥1,250 US dollars/month, 1,346(86%) considered themselves to be religious and 518 (33.1%) were health professionals. While many participants believed that women may donate their oocytes for altruistic reasons, the majority believed that a lack of oocyte donations is due to the prohibition of payments(64.3%) and that incentives would facilitate the decision to donate oocytes(84.7%). The majority of the participants(65.3%) agreed that a financial incentive(i.e., paying the donor) would be the most practical solution for increasing the number of oocyte donations. These results tended to be independent of gender, age, income, religion, education level and profession. Conclusion: While the Brazilian Federal Council of Medicine prohibits payments for oocyte donation, the majority of study participants had no objection to compensating oocyte donors. Moreover, most of the participants agreed that a financial incentive is the most practical solution to increasing the number of oocyte donations.

Terminologia de contratos de locação de imóveis: estudo terminológico bilíngue e elaboração de glossário Português-Francês

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Tradução juramentada de contratos sociais: questões lexicais, terminológicas e fraseológicas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Revisão dos contratos no Código de Defesa do Consumidor

Pós-graduação em Direito - FCHS

Contratos de concessão entre o estado brasileiro e empresas transnacionais de telecomunicações: casos da EMBRATEL/MCI e TELESP/Telefônica Internacional

Pós-graduação em Direito - FCHS

Aspectos jurídicos da celebração de contratos pela Internet

Pós-graduação em Direito - FCHS

Contratos internacionais do comércio no direito brasileiro de lege lata de lege ferenda

Pós-graduação em Direito - FCHS

Tradução juramentada de contratos de compra e venda

Pós-graduação em Estudos Linguísticos - IBILCE

Questões comparadas do léxico da tradução juramentada de contratos de prestação de serviços português-francês

Pós-graduação em Estudos Linguísticos - IBILCE

A tradução juramentada de contratos de compra e venda de títulos executivos na direção inglês→português: semelhança e diferenças no uso de termos simples, expressões fixas e semifixas

Pós-graduação em Estudos Linguísticos - IBILCE

Unidades fraseológicas especializadas: colocações e colocações estendidas em contratos sociais e estatutos sociais traduzidos no modo juramentado e não-juramentado

Pós-graduação em Estudos Linguísticos - IBILCE

Análise crítica de contratos técnicos como ferramenta para melhoria da gestão da manutenção

Currently, due to the highly competitive search among industries are becoming more tools for managing product that provides higher availability and therefore profitability. Maintenance as a strategic sector and of fundamental importance in business, it seeks to maximize availability and available resources, minimizing costs and waste, which directly impacts the company's results. The present work has as main objective the review of contracts for maintenance services for companies contracted by a chemical company in the Paraíba Valley, since most of its maintenance services are outsourced, and raise these contracts which are more critical and higher risk to the company's success, thus creating a tool for decision-making by maintenance managers in the act of seeking renewals or new contracts to provide services. As a result after drawing up a standard procedure for contracting of services and a better structuring of the same, we developed a method for the calculation of the criticality of the contracts and based on these calculations, charts were prepared which showed that the current scenario of maintenance contracts the company studied. Thus it is possible to evaluate the contracts which are most critical to the success or failure of the company studied, and also pave the way for further studies on how this criticality of a contract can affect the relationship, the contractor x contracted

Estudo sobre os aspectos culturais da terminologia dos contratos de prestação de serviços em língua portuguesa e língua francesa

Pós-graduação em Estudos Linguísticos - IBILCE

O equilíbrio econômico-financeiro dos contratos de concessão de rodovias federais e estaduais sob a égide da Lei 8.987/95

Pós-graduação em Direito - FCHS