Assessment of Operating Condition Dependent Reliability Indices in Microgrids

Reliability analysis has been in place for decades, and its results are important for proper planning and operation of utility companies. Engineers must be able to quantify the current reliability of a system, as well as its potential improvement facing different modifications, in order to make informed planning decisions. Meanwhile, system operation has its performance measured through yearly reliability indices. The base of this method of analysis is the failure rate of the system components. In the traditional method, this probability of failure is determined by the components\u27 manufacturer and is considered to be constant. However, it is reasonable to assume that the operation of the system has an effect on the likelihood of random failures to happen to the components. This study proposes a different modeling of failure rate, taking the system state variables into consideration. The probability of having system voltages or currents beyond the acceptable limits is added to the random probability of failure. With this new consideration, an IEEE test system has seven of its reliability indices quantified for comparison. The inclusion of the newly modeled failure rate lead to a worsening of 11.07% in the indices, on average. A second analysis is performed considering a third scenario, with PV and wind based micro sources present in the microgrid system, and an improvement of 0.71% on the indices is noticed, compared to the second scenario. Finally, the effects of storage systems in the microgrid are investigated through a fourth scenario, in which two 2MWh battery systems are introduced, and an improvement of 3.05% is noticed in the reliability indices

A Framework for Efficient Adaptively Secure Composable Oblivious Transfer in the ROM

Oblivious Transfer (OT) is a fundamental cryptographic protocol that finds a number of applications, in particular, as an essential building block for two-party and multi-party computation. We construct a round-optimal (2 rounds) universally composable (UC) protocol for oblivious transfer secure against active adaptive adversaries from any OW-CPA secure public-key encryption scheme with certain properties in the random oracle model (ROM). In terms of computation, our protocol only requires the generation of a public/secret-key pair, two encryption operations and one decryption operation, apart from a few calls to the random oracle. In~terms of communication, our protocol only requires the transfer of one public-key, two ciphertexts, and three binary strings of roughly the same size as the message. Next, we show how to instantiate our construction under the low noise LPN, McEliece, QC-MDPC, LWE, and CDH assumptions. Our instantiations based on the low noise LPN, McEliece, and QC-MDPC assumptions are the first UC-secure OT protocols based on coding assumptions to achieve: 1) adaptive security, 2) optimal round complexity, 3) low communication and computational complexities. Previous results in this setting only achieved static security and used costly cut-and-choose techniques.Our instantiation based on CDH achieves adaptive security at the small cost of communicating only two more group elements as compared to the gap-DH based Simplest OT protocol of Chou and Orlandi (Latincrypt 15), which only achieves static security in the ROM

Urban Cargo Transport UAV Final Design Review

Delivery of goods to homes and offices over the last decades has seen a significant increase as more people and businesses need or want items sent directly to them. With the increase in demand, technology has also experienced a rapid growth, specifically in the field of unmanned aerial vehicles (UAVs). Many major companies are currently researching UAVs as the future of their delivery operations. With this ever-growing demand, NASA has issued a design competition of a UAV developed for urban deliveries. This unmanned aircraft system (UAS) would need to be able to deliver small packages, in a timely manner, within the city they operate. They must be able to drop off two lightweight packages to destinations without human intervention. They must be safe for the citizens of the cities they operate in and output low levels of sound as to not add to the noise pollution (4.4 Design Requirements and Specifications:). Various areas of development needed to be considered and analyzed. The UAV body has fixed wings with a boom-tail design and a multi-rotor configuration for the motors (Figure 7). The body of the aircraft underwent analysis in SolidWorks to gather data of its aerodynamics (5.3 Computational Fluid Simulation). With this analysis, the MH-83-iL airfoil was chose to best suit the needs of this craft (3.2.1 Main Airfoil). Through wing loading analysis, NRT’s UAV would be able to fly at cruising speed of 27 knots and have a 0.08 thrust. Other aspects to consider included control systems, budgetary analysis, and government regulations. Controls systems provide data and insurance for collision avoidance, altitude readings, thermal sensors, and GPS guidance. These systems as well as a safety parachute allow for maximum performance and precaution to help integrate it into urban life. The cost of the aircraft (4.7 Budget) comes out to roughly $1700 given our required body, systems, and propulsion systems. Lastly, government regulations with the Federal Aviation Administration (FAA) provide guidelines for registering and flying UAVs in urban environments. Working closely with the FAA would be required to ensure all federal laws are abided by. The development of and advancement of the urban air mobility (UAM) can provide a more efficient and cost-effective means of delivering packages for companies throughout the nation. This can be achieved with computational and budgetary analysis that best optimize UAV, along with proper safety and government regulations, for company use

PDC 234/2011 : a "cura gay" e a interferência do Legislativo na liberdade científica no contexto da preservação das minorias dentro da sociedade democrática

Trabalho de conclusão de curso (graduação)—Universidade de Brasília, Faculdade de Direito, 2015.O presente trabalho tem por intuito analisar o Projeto de Decreto Legislativo nº 234/2011 apresentado na Câmara dos Deputados, que trata da sustação de itens da Resolução 1/1999 do Conselho Federal de Psicologia, normativa essa que regula a atuação da/o psicóloga/o acerca da questão da orientação sexual. Dessa maneira, problematiza-se a interferência do Poder Legislativo na competência técnica e científica da autarquia profissional, justificada pelo autor do projeto como afronta à liberdade de expressão, o que na prática resulta em discurso discriminatório que reforça preconceitos em relação a lésbicas, gays, bissexuais e transexuais e atua em sentido contrário a normativas da área da psicologia, a dispositivos constitucionais referentes a competência autárquica, a dignidade da pessoa humana e a resoluções internacionais da área da saúde. Aferem-se então as questões relativas à liberdade científica e a consolidação de um paradigma de proibição de discurso discriminatório referente às terapias e métodos utilizados na tentativa de reverter a homossexualidade nas pessoas. De outra parte, efetua-se uma análise da proposição legislativa e sua recorrência temática como uma reação aos direitos de pessoas LGBTs que no contexto pátrio apresenta-se fundamentado em um discurso de ódio.This study explores the legislative proposal PDC 234/201 introduced in Brazilian Parliament, which deals to suspend items from the Resolution 1/1999 of the Brazilian Federal Council of Psychology, which regulates the professional activity of psychologists in the issue of sexual orientation. Thus, it discusses the interference of National Congress in the technical and scientific competence of the professional authority, justified by the project author as an affront to freedom of expression, which in practice leads to discriminatory speech that reinforces prejudices against lesbians, gay, bisexual and transgender people and acts in the opposite direction to the normative of psychology area, the constitutional provisions regarding professional authority, human dignity and international resolutions of healthcare. If gauge then the issues of scientific freedom and the consolidation of a paradigm in banning discriminatory speech referring to sexual reverse therapies and methods used in an attempt to change homosexuality in heterosexuality. Furthermore, performs an analysis of recurring presentation of legislative projects in this theme as a reaction against LGBT rights in the context of hate speech

Tabagismo em pacientes hospitalizados no Hospital Universitário Professor Polydoro Ernani de São Thiago

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Medicina. Departamento de Clinica Medica