A risk-based system to penalize and reward line management for occupational safety and health performance

Penalizing line management for the occurrence of lost time injuries has in some cases had unintended negative consequences. These are discussed. An alternative system is suggested that penalizes line management for accidents where the combination of the probability of recurrence and the maximum reasonable consequences such a recurrence may have exceeds an agreed limit. A reward is given for prompt effective control of the risk to below the agreed risk limit. The reward is smaller than the penalty. High-risk accidents require independent investigation by a safety officer using analytical techniques. Two case examples are given to illustrate the system. Continuous safety improvement is driven by a planned reduction in the agreed risk limit over time and reward for proactive risk assessment and control.

A monolithic smoothing-gap algorithm for contact-impact based on the signed distance function

A new algorithm has been developed for smoothing the surfaces in finite element formulations of contact-impact. A key feature of this method is that the smoothing is done implicitly by constructing smooth signed distance functions for the bodies. These functions are then employed for the computation of the gap and other variables needed for implementation of contact-impact. The smoothed signed distance functions are constructed by a moving least-squares approximation with a polynomial basis. Results show that when nodes are placed on a surface, the surface can be reproduced with an error of about one per cent or less with either a quadratic or a linear basis. With a quadratic basis, the method exactly reproduces a circle or a sphere even for coarse meshes. Results are presented for contact problems involving the contact of circular bodies. Copyright (C) 2002 John Wiley Sons, Ltd.

A yield architecture framework to explain adaptation of pearl millet to environmental stress

Functional knowledge of the physiological basis of crop adaptation to stress is a prerequisite for exploiting specific adaptation to stress environments in breeding programs. This paper presents an analysis of yield components for pearl millet, to explain the specific adaptation of local landraces to stress environments in Rajasthan, India. Six genotypes, ranging from high-tillering traditional landraces to low-tillering open-pollinated modern cultivars, were grown in 20 experiments, covering a range of nonstress and drought stress patterns. In each experiment, yield components (particle number, grain number, 100 grain mass) were measured separately for main shoots, basal tillers, and nodal tillers. Under optimum conditions, landraces had a significantly lower grain yield than the cultivars, but no significant differences were observed at yield levels around 1 ton ha(-1). This genotype x environment interaction for grain yield was due to a difference in yield strategy, where landraces aimed at minimising the risk of a crop failure under stress conditions, and modem cultivars aimed at maximising yield potential under optimum conditions. A key aspect of the adaptation of landraces was the small size of the main shoot panicle, as it minimised (1) the loss of productive tillers during stem elongation; (2) the delay in anthesis if mid-season drought occurs; and (3) the reduction in panicle productivity of the basal tillers under stress. In addition, a low investment in structural panicle weight, relative to vegetative crop growth rate, promoted the production of nodal tillers, providing a mechanism to compensate for reduced basal tiller productivity if stress occurred around anthesis. A low maximum 100 grain mass also ensured individual grain mass was little affected by environmental conditions. The strategy of the high-tillering landraces carries a yield penalty under optimum conditions, but is expected to minimise the risk of a crop failure, particularly if mid-season drought stress occurs. The yield architecture of low-tillering varieties, by contrast, will be suited to end-of-season drought stress, provided anthesis is early. Application of the above adaptation mechanisms into a breeding program could enable the identification of plant types that match the prevalent stress patterns in the target environments. (C) 2003 E.J. van Oosterom. Published by Elsevier Science B.V. All rights reserved.

Moralidade e plágio : um estudo com alunos do ensino médio

Nosso objetivo foi compreender o juízo da representação da ação de plágio de estudantes do segundo e terceiro anos do ensino médio, provenientes de escolas públicas e particulares de Vitória, Espírito Santo. Participaram 40 discentes entre 16 a 18 anos, que frequentavam três escolas públicas e duas privadas da cidade de Vitória-ES, divididos igualmente quanto a sexo e tipo de instituição. Nosso instrumento de pesquisa foi a um roteiro de entrevista semiestruturado, contendo uma história-fictícia que envolveu o comportamento de plágio. As entrevistas foram realizadas individualmente, em consonância com o método clínico piagetiano e, como procedimento de análise dos protocolos, utilizamos a sistematização de categorias proposta por Delval. Avaliamos os juízos dos adolescentes com relação a representação da ação de plágio do personagem da história-fictícia contada, nos seguintes aspectos: se consideravam a ação certa ou errada, se o plagiário deve ou não ser punido e qual (is) a (s) penalidade (s) sugerida (s). Foram solicitadas as justificativas de todos os aspectos anteriormente mencionados. A partir dos dados encontrados, constatamos que a maior parte dos estudantes: 1) considerou que o plágio é uma atitude errada; 2) justificou ser errado, principalmente pela “negligência do aluno no cumprimento do trabalho”, pela “possibilidade de consequência negativa” e pela “ação ser incorreta”; 3) afirmou que o personagem “deve ser punido”; 4) analisou, como castigo para este ato, “fazer um novo trabalho”, uma “conversa” e “receber nota zero no trabalho” plagiado e, por fim, 5) justificou as sanções sugeridas em virtude da “oportunidade de aprendizado e/ou reflexão do aluno com a punição” da “adequabilidade da punição” e da “possibilidade de consequência negativa para o aluno”. Por outro lado, as razões dos poucos escolares que consideravam que o personagem da história “não deve ser penalizado” foram a favor da “ausência de especificação e/ou proibição pelo docente” e por causa do plágio ser um “fato rotineiro”. De maneira geral, os dados de nossa pesquisa mostram que os participantes sabem que é errado plagiar, reconhecem que não se deve fazer este ato e a maioria dos estudantes penalizou a conduta investigada. Esse trabalho pode contribuir para a ampliação dos estudos na área da moralidade e colaborar com subsídios teóricos para a elaboração de projetos de educação em valores morais que contemplem, de uma forma geral, o enfrentamento da desonestidade acadêmica e, especificamente, o plágio. Consideramos que a inserção desse conteúdo nas propostas de educação em valores morais contemporâneas poderá enriquecer a formação moral dos estudantes. Assim, esperamos, a partir dos resultados encontrados na presente pesquisa, subsidiar e promover a realização de outros estudos e propiciar discussões e ações sobre o referido tema, principalmente na Psicologia e na Educação.

Prisão de Sócrates é contra a Constituição?

O decretar da prisão preventiva, mal fundamentada, leva a dizermos que estamos perante uma violação constitucional dos princípios da proporcionalidade, adequação, necessidade e da intervenção mínima em Direito penal. São violados os art.s 18º e 28º da Constituição, os art.s 193º e art.s 202º e ss. do Código de Processo Penal. É violado o art. 40º do Código Penal, quanto às finalidades do próprio Direito Penal, como a ressocialização ou restauração num ordenamento jurídico como o português, onde a pena máxima é apenas de 25 anos mais os descontos do Código de Execução de Penas! § Abstract: The decree of preventive detention, ill-founded, leads to say that this is a constitutional violation of the principles of proportionality, appropriateness, necessity and minimum intervention in criminal law. The art.s 18 and 28 of the Constitution are violated, the art.s 193 and art.s 202 ff. the Criminal Procedure Code. It violated art. 40 of the Penal Code, for the purposes of own criminal law, such as rehabilitation or restoration in a legal system like the Portuguese, where the maximum penalty is only 25 years plus discounts of Implementing Sentencing Code!

INFIDELIDADE: um crime de gestão contra o património

Diz o art. 224º do Código Penal português (CP): “1 - Quem, tendo-lhe sido confiado, por lei ou por acto jurídico, o encargo de dispor de interesses patrimoniais alheios ou de os administrar ou fiscalizar, causar a esses interesses, intencionalmente e com grave violação dos deveres que lhe incumbem, prejuízo patrimonial importante é punido com pena de prisão até 3 anos ou com pena de multa. § 2 - A tentativa é punível. § 3 - O procedimento criminal depende de queixa. § 4 – É correspondentemente aplicável o disposto nos n.os 2 e 3 do artigo 206.º e na alínea a) do n.º 1 do artigo 207º. Redacção da Lei nº 19/2013, de 21/2 – vigente a partir de 23/3/13. Referem, por um lado, os n.os 2 e 3 do artigo 206º: “Restituição ou reparação: (…) 2 - Quando a coisa furtada ou ilegitimamente apropriada for restituída, ou tiver lugar a reparação integral do prejuízo causado, sem dano ilegítimo de terceiro, até ao início da audiência de julgamento em 1ª instância, a pena é especialmente atenuada. § 3 - Se a restituição ou a reparação forem parciais, a pena pode ser especialmente atenuada”. § Says the art. 224 of the Portuguese Penal Code (PC): "1 - Who, having been entrusted by law or legal act, the disposal charge of other people's property interests or to manage or supervise, cause to those interests, intentionally and with serious breach of his duties, important material damage is punished with imprisonment up to three years or a fine. § 2 - The attempt is punishable. § 3 - The criminal proceedings on a complaint. § 4 - It is accordingly applicable the provisions of paragraphs 2 and 3 of Article 206 and paragraph a) of paragraph 1 of Article 207. Wording of Law No. 19/2013, of 21/2 - effective from 03.23.13. Refer on the one hand, paragraphs 2 and 3 of Article 206: "Restitution or repair: (...) 2 - When the stolen or illegally appropriate thing is restored, or have rise to full compensation for financial loss, no illegitimate damage Third, until the beginning of the trial, in 1st instance, the penalty is mitigated. § 3 - If the refund or repair are partial, the penalty can be mitigated. "

A Morte Saiu À Rua…

Diz a Lei 53/03, com última versão da Lei 60/15: “1 ‐ Quem praticar os factos previstos no n.º 1 do artigo 2.º, com a intenção nele referida, é punido com pena de prisão de 2 a 10 anos, ou com a pena correspondente ao crime praticado, agravada de um terço nos seus limites mínimo e máximo, se for igual ou superior àquela, não podendo a pena aplicada exceder o limite referido no n.º 2 do artigo 41.º do Código Penal”. § Says the Law 53/03, with the latest version of Law 60/15: "1 - Whoever commits the acts referred to in paragraph 1 of article 2, with the intention that it shall be punished with imprisonment from 2 to 10 years, or the penalty corresponding to the crime committed, increased by one third in its minimum and maximum limits, if it is equal or superior to, the penalty may not exceed the limit referred to in paragraph 2 of Article 41 of Penal code ".

Improving The Robustness Of Interventional 4D Ultrasound Segmentation Through The Use Of Personalized Shape Priors

While fluoroscopy is still the most widely used imaging modality to guide cardiac interventions, the fusion of pre-operative Magnetic Resonance Imaging (MRI) with real-time intra-operative ultrasound (US) is rapidly gaining clinical acceptance as a viable, radiation-free alternative. In order to improve the detection of the left ventricular (LV) surface in 4D ultrasound, we propose to take advantage of the pre-operative MRI scans to extract a realistic geometrical model representing the patients cardiac anatomy. This could serve as prior information in the interventional setting, allowing to increase the accuracy of the anatomy extraction step in US data. We have made use of a real-time 3D segmentation framework used in the recent past to solve the LV segmentation problem in MR and US data independently and we take advantage of this common link to introduce the prior information as a soft penalty term in the ultrasound segmentation algorithm. We tested the proposed algorithm in a clinical dataset of 38 patients undergoing both MR and US scans. The introduction of the personalized shape prior improves the accuracy and robustness of the LV segmentation, as supported by the error reduction when compared to core lab manual segmentation of the same US sequences.

Os Crimes fiscais: em especial, o crime de abuso de confiança (fiscal)

Dissertação para obtenção do Grau de Mestre em Contabilidade e Finanças Orientador: Professor Dr. António da Costa Oliveira

Optimal dispatch with reactive power compensation by Genetic Algorithm

This paper presents a Unit Commitment model with reactive power compensation that has been solved by Genetic Algorithm (GA) optimization techniques. The GA has been developed a computational tools programmed/coded in MATLAB. The main objective is to find the best generations scheduling whose active power losses are minimal and the reactive power to be compensated, subjected to the power system technical constraints. Those are: full AC power flow equations, active and reactive power generation constraints. All constraints that have been represented in the objective function are weighted with a penalty factors. The IEEE 14-bus system has been used as test case to demonstrate the effectiveness of the proposed algorithm. Results and conclusions are dully drawn.

Derivative-free optimization and filter methods to solve nonlinear constrained problems

In real optimization problems, usually the analytical expression of the objective function is not known, nor its derivatives, or they are complex. In these cases it becomes essential to use optimization methods where the calculation of the derivatives, or the verification of their existence, is not necessary: the Direct Search Methods or Derivative-free Methods are one solution. When the problem has constraints, penalty functions are often used. Unfortunately the choice of the penalty parameters is, frequently, very difficult, because most strategies for choosing it are heuristics strategies. As an alternative to penalty function appeared the filter methods. A filter algorithm introduces a function that aggregates the constrained violations and constructs a biobjective problem. In this problem the step is accepted if it either reduces the objective function or the constrained violation. This implies that the filter methods are less parameter dependent than a penalty function. In this work, we present a new direct search method, based on simplex methods, for general constrained optimization that combines the features of the simplex method and filter methods. This method does not compute or approximate any derivatives, penalty constants or Lagrange multipliers. The basic idea of simplex filter algorithm is to construct an initial simplex and use the simplex to drive the search. We illustrate the behavior of our algorithm through some examples. The proposed methods were implemented in Java.

Derivative-free nonlinear optimization filter simplex

The filter method is a technique for solving nonlinear programming problems. The filter algorithm has two phases in each iteration. The first one reduces a measure of infeasibility, while in the second the objective function value is reduced. In real optimization problems, usually the objective function is not differentiable or its derivatives are unknown. In these cases it becomes essential to use optimization methods where the calculation of the derivatives or the verification of their existence is not necessary: direct search methods or derivative-free methods are examples of such techniques. In this work we present a new direct search method, based on simplex methods, for general constrained optimization that combines the features of simplex and filter methods. This method neither computes nor approximates derivatives, penalty constants or Lagrange multipliers.

Side information creation for efficient Wyner-Ziv video coding: Classifying and reviewing

Video coding technologies have played a major role in the explosion of large market digital video applications and services. In this context, the very popular MPEG-x and H-26x video coding standards adopted a predictive coding paradigm, where complex encoders exploit the data redundancy and irrelevancy to 'control' much simpler decoders. This codec paradigm fits well applications and services such as digital television and video storage where the decoder complexity is critical, but does not match well the requirements of emerging applications such as visual sensor networks where the encoder complexity is more critical. The Slepian Wolf and Wyner-Ziv theorems brought the possibility to develop the so-called Wyner-Ziv video codecs, following a different coding paradigm where it is the task of the decoder, and not anymore of the encoder, to (fully or partly) exploit the video redundancy. Theoretically, Wyner-Ziv video coding does not incur in any compression performance penalty regarding the more traditional predictive coding paradigm (at least for certain conditions). In the context of Wyner-Ziv video codecs, the so-called side information, which is a decoder estimate of the original frame to code, plays a critical role in the overall compression performance. For this reason, much research effort has been invested in the past decade to develop increasingly more efficient side information creation methods. This paper has the main objective to review and evaluate the available side information methods after proposing a classification taxonomy to guide this review, allowing to achieve more solid conclusions and better identify the next relevant research challenges. After classifying the side information creation methods into four classes, notably guess, try, hint and learn, the review of the most important techniques in each class and the evaluation of some of them leads to the important conclusion that the side information creation methods provide better rate-distortion (RD) performance depending on the amount of temporal correlation in each video sequence. It became also clear that the best available Wyner-Ziv video coding solutions are almost systematically based on the learn approach. The best solutions are already able to systematically outperform the H.264/AVC Intra, and also the H.264/AVC zero-motion standard solutions for specific types of content. (C) 2013 Elsevier B.V. All rights reserved.

Funções penalidade para o tratamento das variáveis discretas do problema de fluxo de potência ótimo reativo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Energy resource management in smart grids considering an Intensive use of electric vehicles

The introduction of electricity markets and integration of Distributed Generation (DG) have been influencing the power system’s structure change. Recently, the smart grid concept has been introduced, to guarantee a more efficient operation of the power system using the advantages of this new paradigm. Basically, a smart grid is a structure that integrates different players, considering constant communication between them to improve power system operation and management. One of the players revealing a big importance in this context is the Virtual Power Player (VPP). In the transportation sector the Electric Vehicle (EV) is arising as an alternative to conventional vehicles propel by fossil fuels. The power system can benefit from this massive introduction of EVs, taking advantage on EVs’ ability to connect to the electric network to charge, and on the future expectation of EVs ability to discharge to the network using the Vehicle-to-Grid (V2G) capacity. This thesis proposes alternative strategies to control these two EV modes with the objective of enhancing the management of the power system. Moreover, power system must ensure the trips of EVs that will be connected to the electric network. The EV user specifies a certain amount of energy that will be necessary to charge, in order to ensure the distance to travel. The introduction of EVs in the power system turns the Energy Resource Management (ERM) under a smart grid environment, into a complex problem that can take several minutes or hours to reach the optimal solution. Adequate optimization techniques are required to accommodate this kind of complexity while solving the ERM problem in a reasonable execution time. This thesis presents a tool that solves the ERM considering the intensive use of EVs in the smart grid context. The objective is to obtain the minimum cost of ERM considering: the operation cost of DG, the cost of the energy acquired to external suppliers, the EV users payments and remuneration and penalty costs. This tool is directed to VPPs that manage specific network areas, where a high penetration level of EVs is expected to be connected in these areas. The ERM is solved using two methodologies: the adaptation of a deterministic technique proposed in a previous work, and the adaptation of the Simulated Annealing (SA) technique. With the purpose of improving the SA performance for this case, three heuristics are additionally proposed, taking advantage on the particularities and specificities of an ERM with these characteristics. A set of case studies are presented in this thesis, considering a 32 bus distribution network and up to 3000 EVs. The first case study solves the scheduling without considering EVs, to be used as a reference case for comparisons with the proposed approaches. The second case study evaluates the complexity of the ERM with the integration of EVs. The third case study evaluates the performance of scheduling with different control modes for EVs. These control modes, combined with the proposed SA approach and with the developed heuristics, aim at improving the quality of the ERM, while reducing drastically its execution time. The proposed control modes are: uncoordinated charging, smart charging and V2G capability. The fourth and final case study presents the ERM approach applied to consecutive days.