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Grupo de orienta??o profissional para jovens: uma proposta fenomenol?gica / Career consulting for teenagers: a phenomenological proposalBueno, Camila da Costa Olmos 12 February 2009 (has links)
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Previous issue date: 2009-02-12 / The intent of this paper was to study in an explicatory way the phenomenological group potential related to career choices, describing and comprehending teenagers as they present their experiences and feelings when choosing a career and university/college. The practice here presented is specifically structured through a non-directive work of career consulting as it is not a part of a pre-established program. The data meetings were built through the relationship between researcher and participants. The meetings were settled once a week, for ninety minutes each, totalizing five meetings. The group was facilitated by the researcher-psychologist, with another psychologist as co-facilitator. The data acquired in this study for analyzes were the felt sense reports written by the participants and the narratives of experiences written by the researcher in each meeting. In conclusion, the non-directive career consulting is a practice that allows the increase of self-knowledge, extending the potential of personal choices in this matter. / Este trabalho pretendeu fazer um estudo explorat?rio do potencial do grupo fenomenol?gico em rela??o ? escolha profissional, descrevendo e compreendendo como se apresenta a experi?ncia e os sentimentos de adolescentes frente ? etapa de vida em que se espera que escolham uma faculdade. Especificamente a pr?tica aqui apresentada se estrutura atrav?s de um trabalho n?o-diretivo de orienta??o profissional por n?o partir de um programa de pr?-estabelecido. Os encontros foram constru?dos na rela??o entre a pesquisadora e os participantes. Foram realizadas cinco sess?es de noventa minutos com o grupo, uma vez por semana. O grupo foi facilitado pela psic?loga-pesquisadora, auxiliada por outra psic?loga. Os registros para a an?lise foram as Vers?es de Sentido escritas pelas integrantes do grupo e os relatos das ocorr?ncias de cada encontro escritos pela pesquisadora. Concluise que o processo de orienta??o profissional n?o- diretivo ? uma pr?tica que permite a amplia??o do autoconhecimento, aumentando o potencial de escolhas pessoais.
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A concretização da privacidade do empregado no ambiente de trabalho / The employees privacy at workBurmann, Marcia Sanz 11 April 2011 (has links)
A preocupação com a preservação dos direitos da personalidade do empregado é um movimento característico do direito do trabalho moderno, que concebe o trabalhador como cidadão e titular de todos os direitos fundamentais garantidos constitucionalmente, mesmo que este trabalhador esteja vinculado a um contrato de trabalho. A privacidade, como um direito da personalidade que representa valores morais do ser humano, merece especial atenção no ambiente de trabalho, principalmente em razão da intensificação do uso da tecnologia por parte do empregador para o controle e a fiscalização do empregado, sendo considerada atualmente como elemento essencial para o estabelecimento de um meio ambiente do trabalho sadio. Entretanto, apesar desta preocupação, não há como negar, em razão de o empregado estar inserido na estrutura empresarial, ter a sua atividade subordinada ao empregador e poder praticar atos capazes de afetar direitos fundamentais dos seus colegas de trabalho e de terceiros, que poderão existir situações em que haverá necessidade de limitação da privacidade do trabalhador. Diante desse cenário, a grande discussão que se estabelece é se é possível garantir a concretização do direito à privacidade do trabalhador sem afastar a característica principal da relação de emprego e, principalmente, sem afrontar outros direitos fundamentais de maior ou igual relevância. O objetivo do presente estudo é imergir nessa discussão a fim de demonstrar ser possível a coexistência de todos os interesses envolvidos e garantir a concretização dos direitos da personalidade do trabalhador observando todos os aspectos que decorrem da relação de emprego. Para tanto, após o estudo do conceito e das características da privacidade e do poder diretivo, a dissertação irá propor o estabelecimento de premissas gerais para garantir a preservação da privacidade do empregado em harmonia com a dinâmica do contrato de trabalho. Essas premissas serão utilizadas para buscar a concretização do direito à privacidade no caso concreto, ou seja, nas diversas situações do dia a dia de uma empresa em que a privacidade do trabalhador é passível de ameaça ou violação. Com o estudo dos casos concretos, a dissertação buscará demonstrar ser possível o estabelecimento de regras para a preservação da privacidade do trabalhador, mesmo diante da ausência de previsão legislativa trabalhista específica sobre a matéria. / The concern with the preservation of employees personality rights is a characteristic movement of the modern labor law, which conceives the workers as a citizen and holder of all fundamental rights constitutionally assured, even if the worker is bound to an employment agreement. Privacy, as a right of the personality which represents the moral values of the human beings, deserves special attention at the workplace, especially due to the intensified use of technology by the employer to control and supervise the employee, being considered today as an essential element for the establishment of a healthy work environment. However, despite such concern, no one can deny - since the employee is inserted in the corporate structure, having his/her activity subordinated to the employer and being able to perform actions that can affect the fundamental rights of his/her coworkers and third parties - that there may be situations where the privacy of the worker will have to be restrained. In face of this scenario, the main discussion that takes place is if it would be possible to ensure the realization of the workers right to privacy, without alienating the main characteristics of the employment relationship and, especially, without offense to the other fundamental rights of equal or grater relevance. The purpose of this study is to immerse in this discussion, in order to demonstrate the possibility of coexistence among all the interests involved and to assure the achievement of workers personality rights, taking in consideration all the aspects arising from the employment relationship. Therefore, after an analysis of the concept and characteristics of privacy and directive power, the thesis will propose the establishment of general premises to ensure the preservation of employees privacy, in harmony with the dynamics of the employment agreement. Such premises will be used to seek the realization of the right to privacy, in this specific case, that is, in the different situations of the everyday life of a company where the workers privacy is subject to threats or breaching. By studying real cases, the thesis will seek to demonstrate the possibility of establishing rules to preserve the workers privacy, eve in face of the absence of specific provisions of the labor law on the matter.
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Comparação das emissões de gases de efeito estufa no ciclo de vida do etanol de cana-de-açúcar e os critérios da diretiva européia para energias renováveis / Comparison of Greenhouse Gases Emissions in the Life Cycle of Brazilian Sugar Cane Ethanol and the Renewable Energy DirectiveGrisoli, Renata Patricia Soares 13 May 2011 (has links)
A busca por energias renováveis no setor de transportes fez com que os biocombustíveis se destacassem. No entanto, a preocupação com a sustentabilidade na produção dessas fontes alternativas motivou diversas iniciativas na proposição de critérios com o intuito de reduzir os impactos ambientais e garantir os benefícios desses biocombustíveis, principalmente relacionados à redução da emissão de gases de efeito estufa (GEE). Países como os Estados Unidos e membros da União Européia criaram legislação específica com a finalidade de direcionar esses critérios tanto para a produção interna, quanto para a importação dessas fontes de energia. A principal metodologia presente nessas legislações e utilizada na caracterização da cadeia dos biocombustíveis é a Avaliação do Ciclo de Vida (ACV). Este trabalho teve por objetivo comparar os resultados da Diretiva Européia para Energias Renováveis, para as emissões de GEE no ciclo de vida do etanol de cana-de-açúcar, com os estudos nacionais de maior relevância, a fim de verificar se há diferenças significativas entre eles. A partir desta análise, foi possível concluir que há diferenças entre os estudos, principalmente relacionadas à etapa agrícola, mas que, no entanto, foram pontuais, sendo balanceadas entre os processos e atingindo, em sua maioria, um resultado final semelhante de emissões de GEE entre eles. Neste trabalho também foram discutidas as incertezas existentes nos estudos de ACV do etanol de cana-de-açúcar, principalmente relacionadas às emissões pelo uso de fertilizantes nitrogenados e a mudança indireta do uso do solo. Além disso, a partir das contribuições de instituições brasileiras no estabelecimento de diretrizes para que o etanol fosse aceito como importante combustível na redução dos GEE, este trabalho apresentou a relevância em se discutir as normativas internacionais de sustentabilidade, para que os critérios não sejam considerados como mais uma barreira protecionista ao comércio de biocombustíveis. / The search for renewable energy to be used in the transportation sector emphasized the role of biofuels as an alternative to fossil fuels. However, concerns about the sustainability in the production of alternative sources stimulated several initiatives aiming to reduce environmental impacts and ensure the benefits of biofuels, mainly related to the reduction of greenhouse gases emission (GHGs). In order to address such question, countries such as United States and European Union members have designed specific legislation establishing social and environmental criteria for domestic production and imports of biofuels. The main methodology adopted in these laws and used to characterize the biofuels chain is the Life Cycle Assessment. Thus, this study aimed to compare the results on GHG emission of the Renewable Energy Directive (RED) in the lifecycle of sugar cane ethanol to most relevant studies developed within the country in order to verify differences between them. From the analysis, it was concluded that there were differences, mainly related to the agricultural phase, but they were specific, and balanced between the processes; resulting, in most cases, in quite similar final GHG emissions. In this work, it were also indicated the uncertainties in sugar cane ethanol LCA studies, mainly associated to emissions due the use of nitrogen fertilizer and indirect land use change. Furthermore, based on the contributions of Brazilian organizations in establishing guidelines for the acceptance of ethanol as an important fuel to GHG emissions reduction, this study showed the relevance of discussing international standards of sustainability, considered another protectionist barrier to biofuels trade.
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How to best 'sell' the 'best-seller' clause? : a review on whether the contract adjustment mechanism proposed by the EU draft Digital Single Market Directive can secure fair (additional) remuneration for authors and performersStechova, Katerina January 2018 (has links)
The current - and very relevant - debate about the way authors and performers lose control over exploitation, and more importantly, revenue generated through use of their works and performances in the digital world somewhat overshadows the fact that there are existing scenarios arising from the normal course of dealings in such works where the same occurs and were remedy of any such "injustice" has not been fully enshrined in law. A right to additional fair remuneration is a concept recognised to various degrees in some Member States of the EU but not all, scaling from (seemingly) zero in the UK to quite an elaborate regulation in Germany. Where they are recognised, application and enforcement of relevant provisions also vary. The EU sought to harmonise the issue of author's and performer's access to fair share of revenue generated from exploitation of their work or performance (for normal dealings and in digital spheres of copyright exploitation) in its new draft Directive. The Proposal for a Directive on Copyright in the Digital Single Market published in September 2016 dedicates its Chapter 3 of Title IV to Fair remuneration in contracts of authors and performers; contract adjustment mechanism introduced in Article 15 attempts to tackle the issue by proposing a statutory right to additional remuneration being introduced throughout the EU Member States. Or, was the aim of this provision originally even broader? In this work, three main areas are addressed: (i) the background and justification of inclusion of such provisions into the Draft DSM Directive; (ii) current applicable law in Germany, Czech Republic and the UK; three countries each representing different historical and doctrinal approach to copyright law and thus providing unique benchmarks for the analysis, (iii) reconciliation of the first two parts: analysing what - if any - change in the national legislation would be needed for the three Member States to transpose the provision into the national laws. By way of conclusion, recommendations to amend Article 15 of the draft Directive is based on the analysis made in the third part.
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A conveniência da implementação da Diretiva Quadro da Água no ordenamento jurídico brasileiro como medida efetiva de justiça ambiental: o caso da exploração do Nióbio em CatalãoBranco Filho, Thelmo de Carvalho Teixeira 09 May 2017 (has links)
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Previous issue date: 2017-05-09 / This thesis will address the convenience of implementing the Water Framework Directive
(WFD) in the Brazilian legal system, as a measure of effective environmental justice. In line
with the focus of this investigation, it is also considered damages, benefits and conflicts that
take place in the Municipality of Catalão, State of Goiás, Brazil, where Niobium is extracted.
One of the major sources of conflict therein is water, since the extraction of minerals causes
the silting of springs, among other problems.
This study has the purpose of contributing to the improvement of the regulation and
effectiveness of environmental protection, departing from a popular conflict, which basically
involves water. This research leads us to contemplate how the pressure related to social
conflicts in Catalao has helped to redefine protection strategies that would secure greater
effectiveness of environmental laws. The research hypothesis will be grounded on legal and
other scientific theories, including environmental, social and legal diagnoses, which ensure
the interdisciplinary nature of the study.
The methods employed were the case study and the inductive method, since this research
relies on specific data on mining exploration in the Municipality of Catalão, although aiming
at looking for premises that could be applied wherever this type of activity may occur. We are
seeking answers to "how" and/or "why" the social phenomena combined with the legal one
are operating. Mineral resources are the passion of the 21st century, since they are closely
associated with the technological age and exacerbated consumption. This fact should be
observed with caution, since there is a need for concern with future generations, since those
are non-renewable goods.
The major challenge of the WFD is the access to information, transparency and participation
of citizens as well as all stakeholders in the various stages of the decision-making process, as
well as the control on diffuse emissions based on best environmental practices, which in
Brazil leave to be desired. Consequently, the existence of this tool in national territory will
strengthen other institutes such as environmental responsibility, environmental licensing and
the use of best available techniques / A presente tese abordará a conveniência da implementação da Diretiva Quadro da Água
(DQA), no ordenamento jurídico brasileiro, como medida de efetiva justiça ambiental, bem
como a respeito de danos, benefícios e conflitos ocorridos no município de Catalão, Estado de
Goiás, onde se extrai o Nióbio, foco desta investigação. Um dos maiores eixos de conflito é a
água, já que a extração dos minerais ocasiona o assoreamento de nascentes, dentre outros
problemas. Este estudo visa contribuir para melhorar a regulamentação e a eficácia da
proteção ambiental, a partir do conflito popular, envolvendo essencialmente a água. O estudo
leva-nos a refletir sobre como a pressão e os conflitos sociais em Catalão têm colaborado para
redefinir as estratégias de proteção, a fim de garantir maior efetividade às leis ambientais. A
hipótese de pesquisa será edificada pelas teorias jurídicas e demais teorias científicas,
perpassando por diagnósticos ambientais, sociais e jurídicos, salvaguardando o viés
interdisciplinar do estudo. Os métodos utilizados nesta pesquisa serão o estudo de caso e o
método indutivo, uma vez que partimos de dados particulares, como a exploração da
mineração no município de Catalão, em busca de premissas que possam ser aplicadas onde
ocorrer este tipo de atividade. A metodologia será aplicada visando investigar “como” e/ou
“por que” os fenômenos sociais agregados aos jurídicos são atuantes. Os recursos minerais
são a coqueluche do século XXI, já que estão intimamente ligados à era tecnológica e ao
consumo exacerbado, o que deve ser observado com certa cautela, haja vista a preocupação
com as futuras gerações e por se tratar de bens não renováveis. O grande desafio da DQA é o
acesso à informação, a transparência e a participação dos cidadãos e de todas as partes
interessadas nas várias fases do processo de decisão, além dos controles nas emissões difusas
baseados nas melhores práticas ambientais, o que no Brasil deixa a desejar. Por conseguinte, a
existência desta ferramenta em território nacional reforçará outros institutos como a
responsabilidade ambiental, os licenciamentos ambientais e a utilização das melhores técnicas
disponíveis
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Impacts de l'anthropisation sur la diversité odonatologique au sein des cours d'eau : vers une meilleure prise en compte des espèces de la directive habitats faune flore / Anthropisation impacts on dragonfly diversity within streams : towards better assessement of anthropogenic impacts upon riverine species of European community interestDenis, Alice S 26 June 2018 (has links)
Dans un contexte d'effondrement global de la biodiversité, concilier le développement des activités industrielles et agricoles, génératrices de richesses, avec la préservation du patrimoine naturel constitue un enjeu majeur. Les acteurs économiques de nos sociétés sont ainsi légalement astreints à éviter, réduire et compenser leurs impacts sur les espèces protégées. Ils se trouvent cependant démunis lorsque les connaissances mobilisables sur ces espèces sont insuffisantes pour évaluer l'ampleur de ces impacts ou pour mettre en place des mesures d'évitement et de compensation réellement efficaces. C'est notamment le cas sur les cours d'eau, écosystèmes soumis à de nombreuses pressions du fait de leurs usages par les sociétés humaines (i.e. ressource en eau et nourriture, transport, production d'énergie, loisirs). L'objet de ce travail de thèse est donc d'améliorer la connaissance de trois espèces d'Odonates protégées par la Directive Habitats Faune Flore et inféodées aux cours d'eau : la Cordulie à corps fin Oxygastra curtisii (Dale, 1834), le Gomphe de Graslin Gomphus graslinii Rambur, 1842 et la Cordulie splendide Macromia splendens (Pictet, 1843), afin de mieux appréhender les impacts de l'anthropisation des cours d'eau sur leurs populations. Nous avons cherché en particulier à (1) améliorer la prise en compte de ces espèces dans les études d'impacts, la gestion des cours d'eau et au sein des sites Natura 2000 où elles sont présentes via la proposition d'un protocole standardisé de suivi, (2) évaluer les conséquences de l'artificialisation de leurs habitats, notamment le réchauffement de l'eau, sur leur phénologie et leur morphologie, et (3) caractériser et évaluer l'impact des ouvrages hydrauliques présents sur les cours d'eau, considérant d'une part les petits ouvrages que sont les chaussées liées à d'anciennes minoteries ou à d'autres usages et, d'autre part, les ouvrages hydroélectriques de plus grandes dimensions. Ce travail est centré sur la région Midi-Pyrénées, région qui héberge encore des populations de ces trois espèces. Il a été réalisé en partenariat étroit entre le Conservatoire d'Espaces Naturels de Midi-Pyrénées, structure animatrice du Plan régional d'actions en faveur des Odonates, et le laboratoire d'Ecologie fonctionnelle EcoLab afin d'assurer un transfert direct des connaissances scientifiques acquises vers les gestionnaires, les aménageurs et les services de l'état en charge de la préservation de la biodiversité. / In a context of global biodiversity crisis, reconciling the development of wealth-generating industry and agriculture with nature conservation is a crucial issue. Economic stakeholders are legally obliged to apply the mitigation hierarchy doctrine and thus "avoid, mitigate, and compensate" for their project's impacts. However, for invertebrate protected species, and particularly dragonfly species, basic knowledge on their ecology and population dynamics is lacking. It is thus difficult to accurately anticipate the impacts and propose efficient avoidance and compensation measures. This is particularly true on rivers, which are ecosystems under high pressure owing to their utility for human beings (e.g. water and food resources, transport, energy production, leisure). The aim of this work is to improve knowledge of three protected riverine species of dragonflies: the Orange-spotted emerald Oxygastra curtisii (Dale, 1834), the Pronged clubtail Gomphus graslinii Rambur, 1842, and the Splendid cruiser Macromia splendens (Pictet, 1843), and to provide better assessment methods to evaluate the impacts of the anthropisation of streams on their populations. We sought in particular (1) to improve environmental impact assessments and management of these species within Natura 2000 sites by proposing a standardised survey protocol, (2) to assess the consequences of habitat change, especially water temperature warming, on their phenology and morphology, and (3) to describe and evaluate the impacts of weirs and hydroelectric dams on their populations. This work took place in the Midi-Pyrénées region in southern France, where populations of these three species are still present. It was carried out in close partnership with the Conservatoire d'Espaces Naturels de Midi-Pyrénées, which coordinates the Regional Action Plan for Odonata, and the Functional Ecology Laboratory EcoLab to ensure direct transfer of the scientific knowledge acquired to the ecosystems managers, economic stakeholders and public authorities responsible for biodiversity conservation.
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Effective judicial protection and damages in EU law : the case for the deterrent effectWeingerl, Petra January 2017 (has links)
The aim of the thesis is to examine whether the prohibition of overcompensation in the Antitrust Damages Directive is compatible with the EU legal and normative framework. To this end, the analysis is carried out on two levels. First, the rationale for damages in the selected jurisdictions (England, France and Germany) and in the EU is examined to test the main underpinning justification for the prohibition of overcompensation in the Antitrust Damages Directive, i.e. the 'European legal tradition argument'. Second, the thesis addresses broader constitutional implications that underpin the debate on the desirability of the pursuit to prohibit overcompensation in the EU. These entail questions pertaining to the adoption of such measures and, thus, exploring whether the EU has the legitimacy to legislate and the related question of competence and the choice of the appropriate legal basis. The argument to be advanced in this thesis is that the aim of achieving a sufficient level of deterrence with awarding damages for EU competition law infringements stems from the very conceptual basis in which the right to damages is grounded - the principle of effective judicial protection and the principle of effectiveness. Thus, as the analysis reveals, the prohibition of overcompensation is inconsistent with the EU legal framework, since it has potential to jeopardise the deterrent or dissuasive function of antitrust damages actions. The prohibition of overcompensation has significantly contributed to the business-biased gist of the Directive, and thus to breaking the link between the rationale for the right to damages for EU competition law infringements, the legal basis and the content of the Directive. The thesis ultimately argues that the Directive's prohibition is incompatible with the principles of conferral, subsidiarity and proportionality, and to a considerable extent inconsistent with the EU's legal and normative framework.
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EU's Private Damages Directive : sufficiently framed to achieve its underlying aims and objectives?Stirling, Grant January 2018 (has links)
This thesis seeks to address the question: to what extent is the EU Directive on Antitrust Damages Actions sufficiently framed in its terms to achieve its underlying aims and objectives? It is argued that the Directive has one overriding goal: to make it easier for the victims of infringements of EU competition law - typically end-consumers - to claim compensation from the infringers. It is also argued that the authors of the Directive present a convincing case that one of the main reasons for the lack of victims claiming - let alone being awarded - compensation, prior to the adoption of the Directive, is weaknesses with the existing legal framework governing competition law damages actions at national level. The thesis examines four of the main areas covered by the Directive: disclosure of evidence; the effect of NCA decisions; limitation periods; and indirect purchaser standing and the passing-on defence. In each case, the relevant rules from the Directive are set out and an assessment is carried out. A crucial part of this assessment consists of seeking to ascertain the problems facing potential claimants prior to the adoption of the Directive and asking whether the Directive appears well-framed in terms of addressing those problems. As well as considering case law of the EU courts, the legal rules and jurisprudence of two leading Member States - the United Kingdom and Italy - are used as primary case studies in carrying out this assessment. The assessment of the measures considered in this thesis is a nuanced one. It is argued that the measures set out in Chapter II of the Directive on disclosure of evidence are generally well-framed and beneficial for claimants, crucially showing a keen understanding of the relationship between private and public enforcement. The assessment of Article 9, on the effect of NCA decisions is much less positive. It is argued that the measures are drafted in vague terms and compare unfavourably with existing rules and practices in the two case-study Member States. It is argued that while the measures set out in Article 10 on limitation periods do represent an improvement for claimants in certain respects, there are a number of key issues that they fail to address. Finally, the assessment of Articles 12 to 15 on indirect purchaser standing and the passing-on defence is positive in some respects, but it is argued that many of the measures do not adequately address the issues that they purport to tackle. It is also argued that these measures are unlikely to bear fruit, without certain issues which are not covered by the Directive, being addressed. Ultimately it is concluded that the Directive makes some important strides towards the realisation of its underlying aims and objectives, but that many of the measures examined are found to be too vague, too weak or too incomplete to fully address the key issues and that the Directive also fails to address some important issues at all.
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Základní kvalifikační předpoklady v zadávacím řízení / Basic Qualifying Requirements in Public TendersKročilová, Zuzana January 2012 (has links)
Basic Qualifying Requirements in Public Tenders The purpose of this thesis is to analyse the Basic Qualifying Requirements in the public tenders, as enacted in the Section 53 of the Act no. 137/2006 Coll., on Public Procurement, as amended. The initial reasons for my research are constantly changing legal rules in this branch of law that often do not reflect the European enactment in the Directive 2004/18/EC. The thesis is composed of an Introduction, 3 separate Chapters and a Conclusion. The Introduction outlines the aim of the thesis, its structure and arrangement of the Chapters are shown in this part as well. The Introduction is than followed by the first Chapter called Qualification, in which the topic of criteria for qualitative selection is discussed in the context of the general provisions concerning qualification in the public tenders. This Chapter is subdivided into two parts separately dealing with the requirements of the bodies governed by public law and entities operating in the water, energy, transport and postal services sectors. The second Chapter examines the European enactment of the Public Procurement in the Directive 2004/18/EC, as well as in the Directive 2004/17/EC concerning the entities operating in the above mentioned special sectors. The core of this part lies in a complex...
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Exploitation socio-économique de la modélisation souterraine du transfert des nitrates à l'échelle du bassin de la SeineViavattene, Christophe 02 1900 (has links) (PDF)
Avec les lois sur l'eau de 1964 et 1992, la France s'est dotée d'une gestion intégrée et décentralisée de la ressource en eau, organisée autour de six bassins hydrographiques. Sans remettre en cause les fondements de cette organisation, la Directive Cadre sur l'Eau (DCE), adoptée le 22 décembre 2000, renforce cette gestion en fixant des objectifs environnementaux planifiés, en l'organisant au sein de sous entités hydrographiques, les masses d'eau, et en prônant l'utilisation de l'analyse économique. Dès 2009, les Agences de l'Eau doivent définir un plan de gestion fixant les objectifs à atteindre en 2015, première échéance de la DCE, et un programme de mesures nécessaires à leur réalisation. Parmi les objectifs de reconquête de la qualité des eaux, la réduction des contaminations nitriques des ressources en eau souterraine du bassin de la Seine constitue un des grands enjeux auxquels doivent faire face les gestionnaires. La principale source de cette contamination est une pollution diffuse d'origine agricole étendue à l'ensemble du bassin. Depuis plusieurs années, des efforts ont déjà été initiés en instaurant la mise en place de mesures agro-environnementales. Mais en raison de l'efficacité partielle de ce type de mesure et des temps de réponse souvent longs des aquifères, on est en droit de se demander si ce type de mesures suffira à remplir l'objectif de bon état chimique des eaux souterraines à l'horizon 2015. La première étape de notre travail a donc consisté en une exploitation prospective du modèle agro-hydrologique MODSUR-STICS-NEWSAM, développé dans le cadre du programme PIREN-Seine pour simuler l'impact des pollutions diffuses azotées d'origine agricole sur les trois principaux aquifères du bassin de la Seine. Sur la base d'un recensement des pratiques agricoles observées à l'échelle de grandes régions agricoles sur la période 1992-1998, deux scénarios ont été élaborés: continuité de ces pratiques en "laisser-faire" et application de mesures agro-environnementales. L'évolution de la médiane de la distribution des concentrations mesurées en nitrates, indice statistique caractérisant chaque aquifère, permet d'estimer l'impact des mesures à diverses échéances. Par confrontation entre données simulées avec données observées sur une période de 30 ans, le risque de dépassement d'une valeur seuil est évalué pour chaque cellule du modèle et agrégé à l'échelle des masses d'eau souterraines du bassin. Chaque masse d'eau peut alors être caractérisée par sa probabilité de franchissement des seuils de concentration de 25, 40, 50 et 100 mgNO3/l. La seconde partie de ce mémoire a pour objectif de mettre en œuvre l'exploitation socio-économique des résultats du modèle en déterminant les coûts et les bénéfices attendus des mesures agricoles préventives. Les surcoûts supportés par les agriculteurs tiennent compte des variations de rendements simulés par STICS et des coûts imputables à la mise en place des mesures. L'évaluation des bénéfices se limite à l'estimation des dommages évités pour la production domestique d'eau potable depuis les ressources en eau souterraine. Deux méthodes ont été employées. La première est basée sur l'approche de R.L. Raucher appliquée à l'ensemble du bassin en supposant qu'un traitement curatif systématique des eaux brutes est mis en œuvre dès que la probabilité de dépassement du seuil de 50 mgNO3/l devient trop grande. La seconde approche simule à l'aide s'un système multi-agents (SMA), le comportement des unités de gestion et d'exploitation (UGE) face à une pollution avérée de leur ressource. Ce modèle, baptisé WATER-RUSH, est appliqué sur plusieurs décennies au territoire de trois masses d'eau du bassin de la Seine couvrant 612 UGE, soit 1 027 communes. Cet outil permet de tester les différentes solutions pouvant être adoptées par les UGE suivant un critère de moindre coût et la prise en compte des conditions locales d'exploitation: mélange au sein du réseau, approfondissement des captages, traitement des eaux brutes, abandon et recherche de nouvelle ressource intra ou extra UGE. Sur cette base, le surcoût de chaque solution est calculé annuellement sur toute la période simulée et rapporté au mètre cube produit.
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