906 resultados para Limits to Arbitrage
Resumo:
Los servicios de inteligencia en Colombia han operado durante casi sesenta años sin una regulación integral que demarque sus funciones y sus límites. Recientemente fue aprobado en el Congreso de la República, y en gran parte avalado por la Corte Constitucional, un proyecto de ley que pretende poner fin a esta omisión histórica. El presente artículo tiene como propósito revisar qué tan adecuada resulta la regulación que este proyecto de ley hace de dos aspectos relacionados con los servicios de inteligencia –el alcance del secreto y los controles a su funcionamiento– de cara a la protección de derechos como la intimidad, el acceso a la información y la verdad. La tesis que se defiende es que este proyecto de ley prevé aspectos positivos con relación a los dos temas mencionados, pero deja abiertos vacíos importantes que pueden llevar a que los servicios de inteligencia se aparten de sus funciones y sean utilizados para desconocer los derechos de las personas.
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Este trabajo tiene como objetivo hacer una revisión teórica desde los inicios de la Teoría General de Sistemas, hasta el desarrollo de la dinámica de sistemas, todo lo que estas dos teorías plantean, además de muchas otras teorías de las cuales estas se encuentran rodeadas y conectadas muy cercanamente, ya que partiendo del planteamiento que hizo el biólogo Ludwig Von Bertalanffy se derivaron diversas corrientes de pensamiento, todas alrededor del enfoque y pensamiento de sistemas, y de la cual se deriva la más importante para nosotros en este trabajo de la cual es padre el Ingeniero Jay Wright Forrester, la Dinámica de Sistemas. Muchas de estas otras teorías tienen como objetivo generar estrategias de cambio en las organizaciones mediante diferentes metodologías, pero todas con el fin de alcanzar un desempeño óptimo en los procesos que son realizados en las organizaciones. Este proyecto es planteado ante la necesidad de tener un amplio conocimiento teórico de todo lo que conllevan los planteamientos de la Dinámica de Sistemas los cuales van de la mano junto con el pensamiento sistémico y el modelamiento organizacional, el cual veremos cómo es desarrollado desde el enfoque de la Dinámica de Sistemas a través de distintos modelos y en la actualidad herramientas informáticas tales como software diseñados exclusivamente para el modelamiento desde la Dinámica de Sistemas.
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El consentimiento informado (CI) en medicina corre el riesgo de quedar reducido a un formalismo legal sin valor moral; esto puede suceder por dos cosas: 1) como consecuencia de que el paciente no comprenda con suficiencia el concepto de autonomía y 2) debido a la disminución de la autonomía práctica del paciente por efecto de la autoridad del personal médico o de las instituciones de salud. Este artículo tiene como fin mostrar bajo qué condiciones se puede evitar la reducción del CI a un formalismo legal desprovisto de valor moral. Para servir a este propósito, se considera el concepto de autonomía relacional como eje articulador que pone en relación al paciente con su comunidad moral y con el médico, lo que impulsa al personal de la salud a proporcionar las condiciones para tal fin. Así, se afirma que la valía moral del CI puede conservarse, primero, a partir de una concepción relacional de la autonomía y, segundo, mediante la aplicación, por parte del médico y de la institución, de un protocolo que disminuya la posibilidad de choque entre la autonomía y la autoridad.
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Este trabalho de investigação consiste num estudo empírico sobre uma nova ciência - a Biblioterapia, e a situação mais específica, a sua aplicação em contexto prisional. Para alcançar este objetivo formulámos a seguinte hipótese: “o livro exerce sobre as pessoas em geral e, de uma forma mais particular, sobre indivíduos em contexto de detenção institucional uma função terapêutica”. A metodologia adotada para esta investigação assenta essencialmente em fontes documentais textuais e digitais, sobre autores especialistas na matéria, que de uma forma mais precisa se identificam e citam especificamente no capítulo referente à revisão da literatura. Para atingir o nosso propósito começámos por definir os conceitos de leitura, de leitura terapêutica, de fenomenologia da linguagem, de terapia e de diálogo assim como procurámos saber quais os fundamentos filosóficos e os componentes biblioterapêuticos, público-alvo e áreas com maiores potencialidades de aplicação, benefícios e limitações que norteiam à aplicação da Biblioterapia, nomeadamente, para fins de desenvolvimento pessoal e de alterações comportamentais. Fez-se igualmente uma análise da evolução do conceito, desde Aristóteles até aos nossos dias. Só com o conhecimento efetivo desta realidade seria possível prosseguir o nosso objeto de estudo. Entendemos ainda ser importante perceber qual é a situação da leitura em Portugal e as políticas desenvolvidas nesta área pelo Estado, para promover a leitura junto dos estudantes e da população em geral. Apenas assente nestas duas realidades que se entrecruzam, no processo de leitor/livro é possível identificar e relacionar esta problemática em estudo. Constatamos a existência de dois tipos de Biblioterapia, a Biblioterapia-arte e a Biblioterapia-ciência, identificando algumas das suas características, principalmente o que as aproxima e o que as separa. Apresentamos um exemplo de uma área reconhecidamente bem sucedida na aplicação da Biblioterapia não-clínica, em instituições prisionais, efetuando uma abordagem às questões mais pertinentes neste campo: os seus aspetos institucionais, os psicossociais e os de reinserção social. Considerámos ainda as recomendações da IFLA para este setor populacional – Guidelines for Library Services to Prisoners. Ao longo do trabalho e de uma forma transversal realçamos as interrelações biblioterapêuticas entre pacientes, bibliotecários e outros intervenientes no processo biblioterapêutico, tais como médicos e orientadores de leitura. Finalizamos o trabalho concluindo que a prática de leitura de temas específicos, em qualquer campo de atuação e sob orientação de um elemento profissional com conhecimentos aprofundados tanto em relação às personalidades e problemas dos destinatários como aos materiais que tem à sua disposição – o livro, em sentido lato - pode efetivamente desencadear benefícios terapêuticos nos leitores.
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Introduction The medicines use review (MUR), a new community pharmacy ‘service’, was launched in England and Wales to improve patients’ knowledge and use of medicines through a private, patient–pharmacist appointment. After 18 months, only 30% of pharmacies are providing MURs; at an average of 120 per annum (maximum 400 allowed).1 One reason linked to low delivery is patient recruitment.2 Our aim was to examine how the MUR is symbolised and given meaning via printed patient information, and potential implications. Method The language of 10 MUR patient leaflets, including the NHS booklet,3 and leaflets from multiples and wholesalers was evaluated by discourse analysis. Results and Discussion Before experiencing MURs, patients conceivably ‘categorise’ relationships with pharmacists based on traditional interactions.4 Yet none of the leaflets explicitly describe the MUR as ‘new’ and presuppose patients would become involved in activities outside of their pre-existing relationship with pharmacists such as appointments, self-completion of charts, and pharmacy action plans. The MUR process is described inconsistently, with interchangeable use of formal (‘review meeting‘) and informal (‘friendly’) terminology, the latter presumably to portray an intended ‘negotiation model’ of interaction.5 Assumptions exist about attitudes (‘not understanding’; ‘problems’) that might lead patients to an appointment. However, research has identified a multitude of reasons why patients choose (or not) to consult practitioners,6 and marketing of MURs should also consider other barriers. For example, it may be prudent to remove time limits to avoid implying patients might not be listened to fully, during what is for them an additional practitioner consultation.
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For much of the 1990s and 2000s, the emphasis of urban policy in many global cities was on managing and mitigating the social and environmental effects of rapid economic growth. The credit crunch of 2008 and the subsequent recession have undermined some of the core assumptions on which such policies were based. It is in this context that the concept of resilience planning has taken on a new significance. Drawing on contemporary research in London and Hong Kong, the paper shows how resilience and recovery planning has become a key area of political debate. It examines what is meant by conservative and radical interpretations of resilience and how conservative views have come to dominate ‘recovery’ thinking, with élite groups unwilling to accept the limits to the neo-liberal orthodoxies that helped to precipitate the economic crisis. The paper explores the implications of such thinking for the politics of urban development.
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The scope of the reducing emissions from deforestation and forest degradation (REDD) mechanism has broadened REDD+ to accommodate different country interests such as natural forests, protected areas, as well as forests under community-based management. In Tanzania the REDD+ mechanism is still under development and pilot projects are at an early stage. In this paper, we seek to understand how local priorities and needs could be met in REDD+ implementation and how these expectations match with global mitigation benefits. We examine the local priorities and needs in the use of land and forest resources in the Angai Villages Land Forest Reserve (AVLFR) in the Liwale District of Lindi Region in Tanzania. Primary data was collected in two villages, Mihumo and Lilombe, using semistructured key informant interviews and participatory rural appraisal methods. In addition, the key informant interviews were conducted with other village, district, and national level actors, as well as international donors. Findings show that in the two communities REDD+ is seen as something new and is generating new expectations among communities. However, the Angai villagers highlight three key priorities that have yet to be integrated into the design of REDD+: water scarcity, rural development, and food security. At the local level improved forest governance and sustainable management of forest resources have been identified as one way to achieve livelihood diversification. Although the national goals of REDD+ include poverty reduction, these goals are not necessarily conducive to the goals of these communities. There exist both structural and cultural limits to the ability of the Angai villages to implement these goals and to improve forestry governance. Given the vulnerability to current and future climate variability and change it will be important to consider how the AVLFR will be managed and for whose benefit?
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As we enter an era of ‘big data’, asset information is becoming a deliverable of complex projects. Prior research suggests digital technologies enable rapid, flexible forms of project organizing. This research analyses practices of managing change in Airbus, CERN and Crossrail, through desk-based review, interviews, visits and a cross-case workshop. These organizations deliver complex projects, rely on digital technologies to manage large data-sets; and use configuration management, a systems engineering approach with mid-20th century origins, to establish and maintain integrity. In them, configuration management has become more, rather than less, important. Asset information is structured, with change managed through digital systems, using relatively hierarchical, asynchronous and sequential processes. The paper contributes by uncovering limits to flexibility in complex projects where integrity is important. Challenges of managing change are discussed, considering the evolving nature of configuration management; potential use of analytics on complex projects; and implications for research and practice.
Video stimuli reduce object-directed imitation accuracy: a novel two-person motion-tracking approach
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Imitation is an important form of social behavior, and research has aimed to discover and explain the neural and kinematic aspects of imitation. However, much of this research has featured single participants imitating in response to pre-recorded video stimuli. This is in spite of findings that show reduced neural activation to video vs. real life movement stimuli, particularly in the motor cortex. We investigated the degree to which video stimuli may affect the imitation process using a novel motion tracking paradigm with high spatial and temporal resolution. We recorded 14 positions on the hands, arms, and heads of two individuals in an imitation experiment. One individual freely moved within given parameters (moving balls across a series of pegs) and a second participant imitated. This task was performed with either simple (one ball) or complex (three balls) movement difficulty, and either face-to-face or via a live video projection. After an exploratory analysis, three dependent variables were chosen for examination: 3D grip position, joint angles in the arm, and grip aperture. A cross-correlation and multivariate analysis revealed that object-directed imitation task accuracy (as represented by grip position) was reduced in video compared to face-to-face feedback, and in complex compared to simple difficulty. This was most prevalent in the left-right and forward-back motions, relevant to the imitator sitting face-to-face with the actor or with a live projected video of the same actor. The results suggest that for tasks which require object-directed imitation, video stimuli may not be an ecologically valid way to present task materials. However, no similar effects were found in the joint angle and grip aperture variables, suggesting that there are limits to the influence of video stimuli on imitation. The implications of these results are discussed with regards to previous findings, and with suggestions for future experimentation.
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The electrostatic geodesic mode oscillations are investigated in rotating large aspect ratio tokamak plasmas with circular isothermal magnetic surfaces. The analysis is carried out within the magnetohydrodynamic model including heat flux to compensate for the non-adiabatic pressure distribution along the magnetic surfaces in plasmas with poloidal rotation. Instead of two standard geodesic modes, three geodesic continua are found. The two higher branches of the geodesic modes have a small frequency up-shift from ordinary geodesic acoustic and sonic modes due to rotation. The lower geodesic continuum is a newzonal flowmode (geodesic Doppler mode) in plasmas with mainly poloidal rotation. Limits to standard geodesic modes are found. Bifurcation of Alfven continuum by geodesic modes at the rational surfaces is also discussed. Due to that, the frequency of combined geodesic continuum extends from the poloidal rotation frequency to the ion-sound band that can have an important role in suppressing plasma turbulence.
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The current system of controlling oil spills involves a complex relationship of international, federal and state law, which has not proven to be very effective. The multiple layers of regulation often leave shipowners unsure of the laws facing them. Furthemore, nations have had difficulty enforcing these legal requirements. This thesis deals with the role marine insurance can play within the existing system of legislation to provide a strong preventative influence that is simple and cost-effective to enforce. In principle, insurance has two ways of enforcing higher safety standards and limiting the risk of an accident occurring. The first is through the use of insurance premiums that are based on the level of care taken by the insured. This means that a person engaging in riskier behavior faces a higher insurance premium, because their actions increase the probability of an accident occurring. The second method, available to the insurer, is collectively known as cancellation provisions or underwriting clauses. These are clauses written into an insurance contract that invalidates the agreement when certain conditions are not met by the insured The problem has been that obtaining information about the behavior of an insured party requires monitoring and that incurs a cost to the insurer. The application of these principles proves to be a more complicated matter. The modern marine insurance industry is a complicated system of multiple contracts, through different insurers, that covers the many facets of oil transportation. Their business practices have resulted in policy packages that cross the neat bounds of individual, specific insurance coverage. This paper shows that insurance can improve safety standards in three general areas -crew training, hull and equipment construction and maintenance, and routing schemes and exclusionary zones. With crew, hull and equipment, underwriting clauses can be used to ensure that minimum standards are met by the insured. Premiums can then be structured to reflect the additional care taken by the insured above and beyond these minimum standards. Routing schemes are traffic flow systems applied to congested waterways, such as the entrance to New York harbor. Using natural obstacles or manmade dividers, ships are separated into two lanes of opposing traffic, similar to a road. Exclusionary zones are marine areas designated off limits to tanker traffic either because of a sensitive ecosystem or because local knowledge is required of the region to ensure safe navigation. Underwriting clauses can be used to nullify an insurance contract when a tanker is not in compliance with established exclusionary zones or routing schemes.
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This paper studies the production and trade patterns that may arise between two different countries if plant location is introduced as a first step in the producers' decision making. A three-stage game is used: the first deals with location and the next two with capacity and final sales decisions. Demand and cost structures differ by country, and the latter contain specific elements related to the foreign operation. The structure of possible Nash-equilibria is examined and an analysis of the changes in the solution, if the countries engage in an integration process, is made. As in previous models, though global welfare gains may not be very high, single country ones may be considerable, due to changes in the location of the plants. However, even if full integration takes place, global Marshallian welfare may decrease. Conditions which determine a tendency towards multinationalisation are obtained. Assuming a move toward integration, conditions are also provided to characterize when exporting will be preferred to local production. The fact that producers may retain a certain discriminating power, notwithstanding the elimination of barriers to arbitrage, creates a tendency to locate production in the country where prices are higher. This explains why welfare gains may not be obvious. An empirical illustration, with real data from two MERCOSUL countries (Brazil and Argentina) illustrates the possible outcomes.
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Este trabalho se propõe a ser um fio na teia de reflexões que tecem o debate sobre a participação infantil a partir do ponto de vista das crianças em co-operação com adultos. Sua trama se compõe de campos distintos e autônomos - infância, direito social e participação -, que se cruzam e inter-relacionam, investigados no âmbito de uma experiência realizada na organização social Fundação Xuxa Meneghel, que tem como eixo central de suas ações a promoção e a proteção de crianças e adolescentes que vivem em situação de vulnerabilidade social na Zona Oeste do município do Rio de Janeiro. Trata-se de uma micro-experiência, que pretende compreender o ser criança em relação aos seus direitos humanos e sociais, observando sua influência nas práticas sociais presentes na nossa cultura. O direito à participação infantil - entendida como ferramenta para a auto-proteção e a promoção das crianças como sujeitos plenos exercitando a cidadania - se materializou numa investigação em que as concepções metodológicas convencionais foram se re-construindo por meio das vozes infantis em diálogo com seus pares e com os adultos. As crianças apresentaram seus pontos de vista e as significações que atribuem ao seu entorno e a suas possibilidades e limites de participar de forma genuína nas suas principais instâncias de socialização: família, escola e comunidade. A experiência se constitui numa provocação do olhar para as identidades e as culturas das crianças que dela participaram, para suas vivências expressas por representações de ações e emoções contextualizadas no tempo e no espaço, numa tentativa de compor com elas - e ampliando para todas as crianças da instituição - uma compreensão do que significa o direito de participar, ensinado e apreendido em perspectiva social e cultural.
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The concern with the environment is not a recent phenomenon, however, during some time the quarrel over ambient elements did not succeed to reach similar importance as subjects like productivity and quality. The diagnosis of ambient problems with serious consequences in the whole world contributed to renew the concern with the environment and the ambient element acquired high importance in daily activities and in the activities of manufacture and commerce. During many years the ambient politics and regulations were seen as limits to the production or expansion of the productive activities. In the present work we developed a study which demonstrates, in fact this picture is not real. Therefore it is possible to act in efficient considering ambient and economics. A concept that searchs to add efficiency in operations, productiveness and economics to the respect with the environment is the ecoefficiency. In the present work a study of case in the area of ecoefficiency was developed and presents some innovations developed and adopted in the oil industry that had contributed for the company to reach greater efficiency using natural resources, with lesser losses and greater production of demanded derivatives of oil and thus contributing for higher productive, economic and ambient efficiency.
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Este trabalho de conclusão tem como tema a relação entre as especificações de resinas alquídicas e de tintas preparadas com estas resinas, com foco nas características de teor de sólidos e viscosidade, fazendo uso das técnicas projeto de experimentos, superfície de resposta e análise de regressão. O objetivo principal é o estudo dos limites de especificação ideais para a resina alquídica, de forma que os lotes de tinta apresentem propriedades dentro da especificação já ao final do processamento, reduzindo a incidência de lotes fabris com necessidade de ajuste. Como conseqüência, temos redução de retrabalho e lead time fabril, adequação de custo de produtos, maior qualidade intrínseca e maior confiança na sistemática de desenvolvimento, produção e controle de qualidade. Inicialmente, foi realizada uma revisão bibliográfica sobre a tecnologia de tintas e resinas alquídicas, conceitos de controle de qualidade, planejamento de experimentos, análise por superfície de resposta e análise de regressão. Na seqüência, foi conduzido o estudo de caso, realizado na empresa Killing S.A. Tintas e Adesivos, planta localizada na cidade de Novo Hamburgo. Os resultados experimentais indicaram modelos de regressão polinomial válidos para as propriedades avaliadas. Foram tomadas as propriedades teor de sólidos e viscosidade Copo Ford #2 da mistura A+B como parâmetros para análise dos limites de especificação da resina alquídica, onde se comprovou que a variabilidade atualmente permitida é excessiva. A aplicação dos modelos de regressão indicou novos limites de especificação para a resina alquídica, mais estreitos, viabilizando a obtenção de tintas com propriedades especificadas.