851 resultados para Development Underdevelopment Nation State
Resumo:
<p>The last three decades have seen social enterprises in the United Kingdom pushed to the forefront of welfare delivery, workfare and area-based regeneration. For critics, this is repositioning the sector around a neoliberal politics that privileges marketization, state roll-back and disciplining community groups to become more self-reliant. Successive governments have developed bespoke products, fiscal instruments and intermediaries to enable and extend the social finance market. Such assemblages are critical to roll-out tactics, but they are also necessary and useful for more reformist understandings of economic alterity. The issue is not social finance itself but how it is used, which inevitably entangles social enterprises in a form of legitimation crises between the need to satisfy financial returns and at the same time keep community interests on board. This paper argues that social finance, how it is used, politically domesticated and achieves re-distributional outcomes is a necessary component of counter-hegemonic strategies. Such assemblages are as important to radical community development as they are to neoliberalism and the analysis concludes by highlighting the need to develop a better understanding of finance, the ethics of its use and tactical compromises in scaling it as an alternative to public and private markets.</p>
Resumo:
Globalisation has led to a shift in world order with the rise of the corporate non-state actor. This rise has led to an assumption that Multi-National Corporations (MNCs) must assume responsibilities beyond profit maximisation for shareholders. With the rise of the MNC as a corporate non-state actor there have been discussions around the role of business with regard to human rights. <br/><br/>This article looks at the case of oil extraction in Nigeria. Focussing on the historical dependency of Nigeria and the evolution of the state into a resource-dependent country, it looks at the limitations of existing human rights obligations as they relate to business. This article proposes that corporate social responsibility (CSR) policies of MNCs can act as a preliminary stage in the quest for wider human rights protections. It is in motivating MNCs to design and implement effective CSR policies in dependent states like Nigeria, that the challenge lies. <br/>
Resumo:
Damage detection in bridges using vibration-based methods is an area of growing research interest. Improved assessment<br/>methodologies combined with state-of-the-art sensor technology are rapidly making these approaches applicable for real-world<br/>structures. Applying these techniques to the detection and monitoring of scour around bridge foundations has remained<br/>challenging; however this area has gained attraction in recent years. Several authors have investigated a range of methods but<br/>there is still significant work required to achieve a rounded and widely applicable methodology to detect and monitor scour.This<br/>paper presents a novel Vehicle-Bridge-Soil Dynamic Interaction (VBSDI) model which can be used to simulate the effect of scour<br/>on an integral bridge. The model outputs dynamic signals which can be analysed to determine modal parameters and the variation<br/>of these parameters with respect to scour can be examined.The key novelty of this model is that it is the first numerical model for<br/>simulating scour that combines a realistic vehicle loadingmodel with a robust foundation soil responsemodel.This paper provides a<br/>description of the model development and explains the mathematical theory underlying themodel. Finally a case study application<br/>of the model using typical bridge, soil, and vehicle properties is provided.
Resumo:
In this paper, a recursive filter algorithm is developed to deal with the state estimation problem for power systems with quantized nonlinear measurements. The measurements from both the remote terminal units and the phasor measurement unit are subject to quantizations described by a logarithmic quantizer. Attention is focused on the design of a recursive filter such that, in the simultaneous presence of nonlinear measurements and quantization effects, an upper bound for the estimation error covariance is guaranteed and subsequently minimized. Instead of using the traditional approximation methods in nonlinear estimation that simply ignore the linearization errors, we treat both the linearization and quantization errors as norm-bounded uncertainties in the algorithm development so as to improve the performance of the estimator. For the power system with such kind of introduced uncertainties, a filter is designed in the framework of robust recursive estimation, and the developed filter algorithm is tested on the IEEE benchmark power system to demonstrate its effectiveness.
Resumo:
<p>Research in the field of sports performance is constantly developing new technology to help extract meaningful data to aid in understanding in a multitude of areas such as improving technical or motor performance. Video playback has previously been extensively used for exploring anticipatory behaviour. However, when using such systems, perception is not active. This loses key information that only emerges from the dynamics of the action unfolding over time and the active perception of the observer. Virtual reality (VR) may be used to overcome such issues. This paper presents the architecture and initial implementation of a novel VR cricket simulator, utilising state of the art motion capture technology (21 Vicon cameras capturing kinematic profile of elite bowlers) and emerging VR technology (Intersense IS-900 tracking combined with Qualisys Motion capture cameras with visual display via Sony Head Mounted Display HMZ-T1), applied in a cricket scenario to examine varying components of decision and action for cricket batters. This provided an experience with a high level of presence allowing for a real-time egocentric view-point to be presented to participants. Cyclical user-testing was carried out, utilisng both qualitative and quantitative approaches, with users reporting a positive experience in use of the system.</p>
Resumo:
Ao longo das ltimas trs dcadas, o envolvimento das comunidades na formulao de polticas locais tem vindo a ganhar cada vez mais ateno como uma abordagem sustentvel para o desenvolvimento rural na Unio Europeia (UE) e no mundo. Emergendo da globalizao, novas estruturas de governao tm desafiado a base territorial restricta da autoridade do Estado soberano atravs do envolvimento de uma rede complexa e de autoorganizao de atores governamentais e no-governamentais na tomada de decises coletivas. A reestruturao territorial e institucional das zonas rurais, associada expanso da governana rural, ganhou ateno considervel na literatura. No entanto, o potencial de empregar princpios de governana como fatores que determinam as direes de desenvolvimento rural atravs de desempenho organizacional e apoio no turismo no tem sido amplamente explorado na literatura. Deste modo, o principal objetivo desta tese consiste no emprego de integrao, participao e empowerment como fatores crticos que influenciam os rumos do desenvolvimento rural (1) atravs do desempenho organizacional das organizaes de governana rural e (2) apoio no turismo de organizaes de desenvolvimento rural tendo em vista a validao da abordagem de governana para o turismo integrado. Ao longo deste duplo objectivo geral, a tese dividida numa componente qualitativa de desempenho e numa componente quantitativa de apoio. Seguindo uma abordagem sistemtica baseada num sistema conceptual, foram realizadas 38 entrevistas em profundidade com pessoas chave envolvendo gestores do programa LEADER da UE na Hungria (34% do nmero total de Grupos de Ao Local [GAL]), seguido por um levantamento de campo transversal realizado atravs de um sistema de recolha de dados na Internet, tendo resultado em 662 questionrios vlidos para uma taxa de resposta de 63.6%. Os resultados da componente desempenho revelaram padres na implementao dos princpios de governana, que por sua vez permitiram a identificao de fatores que permitem e restringem o desempenho organizacional. Os resultados da componente apoio permitiram destacar que o ponto de vista de redes de desenvolvimento local nos princpios de governana no homogneo. Diferenas significativas foram encontradas entre organizaes responsveis pelo planeamento e os grupos de aconselhamento. Contudo, os resultados sugeriram que a dimenso sustentvel de turismo rural integrado um prognosticador da contribuio do turismo para o desenvolvimento global da comunicade e para o apoio do turismo ao longo das redes de desenvolvimento local. Este estudo responde a uma necessidade crescente de investigao, que resulta da proliferao escala mundial de formaes de governana em sistemas de administrao pblica, tanto no lado dos investigadores como no lado dos praticantes.
Resumo:
The exponential growth of the world population has led to an increase of settlements often located in areas prone to natural disasters, including earthquakes. Consequently, despite the important advances in the field of natural catastrophes modelling and risk mitigation actions, the overall human losses have continued to increase and unprecedented economic losses have been registered. In the research work presented herein, various areas of earthquake engineering and seismology are thoroughly investigated, and a case study application for mainland Portugal is performed. Seismic risk assessment is a critical link in the reduction of casualties and damages due to earthquakes. Recognition of this relation has led to a rapid rise in demand for accurate, reliable and flexible numerical tools and software. In the present work, an open-source platform for seismic hazard and risk assessment is developed. This software is capable of computing the distribution of losses or damage for an earthquake scenario (deterministic event-based) or earthquake losses due to all the possible seismic events that might occur within a region for a given interval of time (probabilistic event-based). This effort has been developed following an open and transparent philosophy and therefore, it is available to any individual or institution. The estimation of the seismic risk depends mainly on three components: seismic hazard, exposure and vulnerability. The latter component assumes special importance, as by intervening with appropriate retrofitting solutions, it may be possible to decrease directly the seismic risk. The employment of analytical methodologies is fundamental in the assessment of structural vulnerability, particularly in regions where post-earthquake building damage might not be available. Several common methodologies are investigated, and conclusions are yielded regarding the method that can provide an optimal balance between accuracy and computational effort. In addition, a simplified approach based on the displacement-based earthquake loss assessment (DBELA) is proposed, which allows for the rapid estimation of fragility curves, considering a wide spectrum of uncertainties. A novel vulnerability model for the reinforced concrete building stock in Portugal is proposed in this work, using statistical information collected from hundreds of real buildings. An analytical approach based on nonlinear time history analysis is adopted and the impact of a set of key parameters investigated, including the damage state criteria and the chosen intensity measure type. A comprehensive review of previous studies that contributed to the understanding of the seismic hazard and risk for Portugal is presented. An existing seismic source model was employed with recently proposed attenuation models to calculate probabilistic seismic hazard throughout the territory. The latter results are combined with information from the 2011 Building Census and the aforementioned vulnerability model to estimate economic loss maps for a return period of 475 years. These losses are disaggregated across the different building typologies and conclusions are yielded regarding the type of construction more vulnerable to seismic activity.
Resumo:
The development of a new instrument for the measurement of convective and radiative is proposed, based on the transient operation of a transpiration radiometer. Current transpiration radiometers rely on steady state temperature measurements in a porous element crossed by a know gas mass flow. As a consequence of the porous sensing elements intrinsically high thermal inertia, the instruments time constant is in the order of several seconds. The proposed instrument preserves established advantages of transpiration radiometers while incorporating additional features that broaden its applicability range. The most important developments are a significant reduction of the instruments response time and the possibility of separating and measuring the convective and radiative components of the heat flux. These objectives are achieved through the analysis of the instruments transient response, a pulsed gas flow being used to induce the transient behavior.
Resumo:
The development of computed tomography systems with energy resolving detectors is a current challenge in medical physics and biomedical engineering. A computed tomography system of this kind allows getting complementary informations relatively to conventional systems, that can help the medical diagnosis, being of great interest in medicine. The work described in this thesis is related to the development of a computed tomography system using micropattern gaseous detectors, which allow storing, simultaneously, information about the interaction position and the energy of each single photon that interacts with the detector. This kind of detectors has other advantages concerning the cost and characteristics of operation when compared with solid state detectors. Tomographic acquisitions were performed using a MicroHole & Strip Plate based detector, which allowed reconstructing cross-sectional images using energy windows, applying the energy weighting technique and performing multi-slice and tri-dimensional reconstructions. The contrast-to-noise ratio was improved by 31% by applying the energy weighting technique, comparing with the corresponding image obtained with the current medical systems. A prototype of a computed tomography with flexibility to change the detector was developed, making it possible to apply different detectors based on Thick-COBRA. Several images acquired with these detectors are presented and demonstrate their applicability in X-ray imaging. When operating in NeCH4, the detector allowed a charge gain of 8 104, an energy resolution of 20% (full width at half maximum at 8 keV), a count rate of 1 106 Hz/mm2, a very stable operation (gain fluctuations below 5%) and a spacial resolution of 1.2 mm for an energy photon of 3.6 keV. Operating the detector in pure Kr allowed increasing the detection efficiency and achieving a charge gain of 2 104, an energy resolution of 32% (full width at half maximum at 22 keV), a count rate of 1 105 Hz/mm2, very stable operation and a spatial resolution of 500 m. The software already existing in the group was improved and tools to correct geometric misalignments of the system were also developed. The reconstructions obtained after geometrical correction are free of artefacts due to the referred misalignments.
Resumo:
The main goal of this thesis is to propose a conceptual theoretical model of critical success factors of International Development Cooperation programmes that are based in knowledge transfer approaches in the context of tourism development. The research was structured around three main theoretical pillars: international development cooperation (IDC), tourism as a tool for development, and knowledge transfer (KT). By exploring these pillars main interrelations, it was possible to gather the necessary background to develop the theoretical model and apply it to a real context. It was adopted a qualitative research approach using as a case study an IDC programme in tourism - the UNWTO.Volunteers programme. The key contribution of this thesis in the theoretical realm is the bridging of fields of study that are insufficiently covered in the scientific literature. The resulting model proposal applied to a real context of an IDC programme implementation permitted to test it partially providing useful insights for future research. It is postulated that IDC programmes in these contexts constitute a process rather than an end in itself. Therefore, they should be seen as a way of changing the state of the art of the tourism system in a sustainable manner so that it potentially generates positive development changes. This study suggested that it is not possible to achieve positive results if, instead of encouraging a KT and learning environment, it is simply disseminated knowledge in a linear, static, north-south approach. The characteristics of these interventions should be reviewed in that it was found that it is very difficult to guarantee the maintenance of the development changes induced by them if it is not safeguarded the necessary conditions and accountability to implement the recommended actions. While it was perceived a great potential for development changes to be induced by some IDC programmes in tourism destinations, it was concluded that these processes are too much dependent on the local political systems and existing power relations, as well as on the level of tourism development of the destination. However, more research is needed to examine the ability to generalise the findings to other IDC programmes and different destinations of developing countries.
Resumo:
O presente trabalho comea por analisar a evoluo dos sistemas ao longo de vrios perodos histricos, bem como os conceitos e tipologias que os sustentam, no quadro da problemtica e da conceptualizao terica do ensino superior. A origem da universidade na idade mdia, na Europa e em outras partes do mundo, fundamenta-se, principalmente, na procura do saber e nas condicionantes socioeconmicas da poca. A evoluo da universidade sustentada pela narrativa da modernidade, resultou em modelos diferenciados de ensino superior, que mantinham, no entanto, a razo e a epistemologia do conhecimento acadmico, como fatores unificadores. O modelo utilizado para traduzir a referida evoluo, proposto por Scott (1995) e configura a relao que se estabelece entre a universidade e outras formas de ensino superior. Na sequncia do desenvolvimento dos sistemas, suscitados pelas relaes entre os diversos atores envolvidos no ensino superior, procurou-se evidenciar a relao entre o Estado o mercado e os acadmicos, bem como outros atores sociopolticos, institucionais e da sociedade civil. O quadro de anlise dos mecanismos de coordenao destas envolventes, baseou-se no Tringulo de Clark, complementado com o modelo da Metfora da Flutuao. Desde o incio da dcada de 80 do sculo XX, que a misso, o modo de organizao e o funcionamento das IES tm vindo a ser questionadas, como resultado das mudanas econmicas de cariz neoliberal. Este cenrio, propiciador de crises e de transformaes, no tem impedido, porm, de manter o papel fundamental da universidade como produtora e difusora do conhecimento. No contexto da globalizao e da cada vez maior influncia do mercado no ensino superior, procura-se impor um modelo hegemonizado de racionalidade econmica, competitividade e eficincia - o managerialismo. No obstante alguns xitos, esta ideologia no tem sido completamente bem-sucedida. Alis, tentativa da globalizao de gerar uma ordem uniformista, tm sido contrapostos modelos de recontextualizao que procuram refletir as realidades locais. Embora num reduzido nmero de pases, frica, registou formas de ensino superior endgenas, no perodo pr-colonial. Depois do espectro colonial que mantm, ainda hoje, a sua influncia, os sistemas debatem-se na atualidade com diferentes dilemas, originados pelas correntes da globalizao. Porm, o ensino superior em frica assume um papel central no contexto do desenvolvimento dos diferentes pases contribuindo, igualmente, para a construo da Nao e da sua identidade. Esta dimenso, no impeditiva do seu envolvimento, nos desafios da sociedade e da economia do conhecimento, buscando, ao mesmo tempo, modelos e prticas equilibradoras, que proporcionem uma resposta satisfatria s necessidades sociais e econmicas, nacionais e regionais. Ao enquadrar o sistema de ensino superior em Moambique merecem destaque as etapas do processo histrico, nomeadamente o surgimento dos estudos gerais universitrios como primeira forma de ensino superior mais tarde transformada em universidade, a mudana de paradigma aps a independncia nacional, a abertura ao setor privado e, ainda, a expanso do sistema. A discusso sobre polticas e estratgias sustentada pela anlise dos respetivos planos estratgicos bem como, pela compreenso das leis fundamentais e respetivos documentos reguladores. Este conjunto de instrumentos concorre para a reforma do sistema, que se procura implementar em Moambique. Nesta sequncia, de salientar o debate pblico realizado em torno das qualificaes e graus oficialmente estabelecidos, que parece constituir uma problemtica ainda no completamente resolvida. Numa outra parte do trabalho, procede-se apresentao e anlise dos resultados de uma investigao sobre o ensino superior em Moambique. Seguindo uma metodologia de anlise qualitativa, foi possvel estruturar a informao obtida, em diferentes dimenses e categorias. A informao foi recolhida e tratada, a partir de entrevistas efetuadas a diferentes grupos de atores, direta ou indiretamente relacionados com o ensino superior em Moambique. Os resultados da anlise conduziram sistematizao de um conjunto de linhas de fora e ao traar de concluses, contributivas para a melhoria do quadro de referncia sobre polticas, concees e prticas do ensino superior em Moambique.