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Search Results: 1 - 10 of 4446 matches for " Alain Fleury "
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Assessing Sustainability of Logging Practices in the Congo Basin's Managed Forests: the Issue of Commercial Species Recovery
Alain Karsenty,Sylvie Gourlet-Fleury
Ecology and Society , 2006,
Abstract: Traditionally, sustained yield (SY) has been viewed as a pillar of sustainable forest management (SFM), but this has been increasingly questioned. Ensuring SY of some species, i.e., a "strong sustainability" paradigm, could be an inadequate criterion if consideration of the social and economic components of the SFM concept are desired. SFM was translated into the ATO/ITTO set of principles, criteria, and indicators (PCI) for forest management in the Congo Basin; it resulted in the necessity for a certified logging company to ensure that no significant change in structure and floristic composition would result from logging operations. Besides raising the question of where to place the change threshold, we argue that sustainability must be considered from three indissociable viewpoints: ecological, social, and economic. The issue is how to balance these criteria, knowing that this assessment will involve potential conflicts of representations and beliefs. To discuss these questions, we used the example of two heavily logged timber species in the Congo Basin, sapelli (Entandrophragma cylindricum) and ayous (Triplochiton scleroxylon). Using long-term data collected from permanent sample plots in M'Ba ki, Central African Republic, we calibrated a matrix model and performed short- and long-term simulations to examine (1) the potential effect of repeated logging of the species under the current national regulation system and (2) the rules that should be set to reach long-term SY. Ensuring long-term SY would require a 22% and 53% decrease in the felling intensity of E. cylindricum and T. scleroxylon, respectively, at first cut, together with an increase in overall logging intensity targeted toward less-used species. Light-demanding E. cylindricum and T. scleroxylon require open forests to regenerate and grow. This new set of rules is probably economically unsustainable for the current African forest industry, and will not meet the ecological requirements encapsulated in the ATO/ITTO PCI. We thus stress the following points: (1) the importance of most exploited species for the current industry may change as wood processing capacities become more efficient and markets change, potentially providing conditions for harvesting a greater number of species; (2) floristic change is unavoidable in these conditions, but this problem should be addressed at a broad scale, notably by ensuring a network of protected areas; (3) as long as the timber industry remains one of the few sources of employment and revenues in marginalized countries, reducing SFM to SY of the most expl
CLUSS: Clustering of protein sequences based on a new similarity measure
Abdellali Kelil, Shengrui Wang, Ryszard Brzezinski, Alain Fleury
BMC Bioinformatics , 2007, DOI: 10.1186/1471-2105-8-286
Abstract: To show the effectiveness of CLUSS, we performed an extensive clustering on COG database. To demonstrate its ability to deal with hard-to-align sequences, we tested it on the GH2 family. In addition, we carried out experimental comparisons of CLUSS with a variety of mainstream algorithms. These comparisons were made on hard-to-align and easy-to-align protein sequences. The results of these experiments show the superiority of CLUSS in yielding clusters of proteins with similar functional activity.We have developed an effective method and tool for clustering protein sequences to meet the needs of biologists in terms of phylogenetic analysis and prediction of biological functions. Compared to existing clustering methods, CLUSS more accurately highlights the functional characteristics of the clustered families. It provides biologists with a new and plausible instrument for the analysis of protein sequences, especially those that cause problems for the alignment-dependent algorithms.With the rapid burgeoning of protein sequence data, the number of proteins for which no experimental data are available greatly exceeds the number of functionally characterized proteins. To predict a function for an uncharacterized protein, it is necessary not only to detect its similarities to proteins of known biochemical properties (i.e., to assign the unknown protein to a family), but also to adequately assess the differences in cases where similar proteins have different functions (i.e., to distinguish among subfamilies). One solution is to cluster each family into distinct subfamilies composed of functionally related proteins. Subfamilies resulting from clustering are easier to analyze experimentally. A subfamily member that attracts particular interest need be compared only with the members of the same subfamily. A biological function can be attributed with high confidence to an uncharacterized protein, if a well-characterized protein within the same cluster is already known. Conversel
Meningioma secretório: relato de dois casos
Stávale, Jo?o Norberto;Malheiros, Suzana Maria Fleury;Gabbai, Alberto Alain;
Arquivos de Neuro-Psiquiatria , 1997, DOI: 10.1590/S0004-282X1997000300021
Abstract: two surgically removed meningotheliomatous meningiomas with hyaline inclusions or pseudopsammoma bodies were studied. both meningiomas showed expression of carcinoembryonic antigen and cytokeratin in the cells surrounding the hyaline bodies. there was widespread vimentin and epithelial membran antigen except in the cells with hyaline inclusions. clinically both had a severe cerebral edema. one of the cases showed multiple tumors, problably meningiomas. it is important not to misinterpret this variant of meningioma as metastatic neoplasm which may result in palliative treatment of a potentially curable tumor.
Mental health network governance and coordination: comparative analysis across Canadian regions
Mary E. Wiktorowicz,Marie-Josée Fleury,Carol E. Adair,Alain Lesage
International Journal of Integrated Care , 2010,
Abstract: Objective: Modes of governance were compared in ten local mental health networks in diverse contexts (rural/urban and regionalized/non-regionalized) to clarify the governance processes that foster inter-organizational collaboration and the conditions that support them. Methods: Case studies of ten local mental health networks were developed using qualitative methods of document review, semi-structured interviews and focus groups that incorporated provincial policy, network and organizational levels of analysis. Results: Mental health networks adopted either a corporate structure, mutual adjustment or an alliance governance model. A corporate structure supported by regionalization offered the most direct means for local governance to attain inter-organizational collaboration. The likelihood that networks with an alliance model developed coordination processes depended on the presence of the following conditions: a moderate number of organizations, goal consensus and trust among the organizations, and network-level competencies. In the small and mid-sized urban networks where these conditions were met their alliance realized the inter-organizational collaboration sought. In the large urban and rural networks where these conditions were not met, externally brokered forms of network governance were required to support alliance based models. Discussion: In metropolitan and rural networks with such shared forms of network governance as an alliance or voluntary mutual adjustment, external mediation by a regional or provincial authority was an important lever to foster inter-organizational collaboration.
Acidente vascular cerebral isquêmico após quimioterapia com cisplatina, etoposide e bleomicina: relato de caso
Santos, Adrialdo José;Malheiros, Suzana Maria Fleury;Borges, Lia Raquel Rodrigues;Dzik, Carlos;Nalli, Darcio G;Gabbai, Alberto Alain;
Arquivos de Neuro-Psiquiatria , 2003, DOI: 10.1590/S0004-282X2003000100027
Abstract: a 20-year-old man with a germ cell tumor who experienced an ischemic stroke as a complication of cisplatin/etoposide/bleomycin based chemotherapy is reported. the previously reported cases are reviewed as well as the different physiopathologic mechanisms associated with vascular toxicity of this regimen.
Germinoma localizado nos núcleos da base e tálamo com invas?o do tronco cerebral: relato de caso
Arquivos de Neuro-Psiquiatria , 1998, DOI: 10.1590/S0004-282X1998000400025
Abstract: we report an unusual case of germinoma arising from the basal ganglia and thalamus with brain stem invasion, with emphasis on computed tomography and magnetic resonance findings. diagnosis was confirmed by histopathologic examination. early detection of this tumor is important due to its potential response to treatment.
Estratégias, organiza??o e gest?o de empresas em mercados globalizados: a experiência recente do Brasil
Fleury, Afonso;
Gest?o & Produ??o , 1997, DOI: 10.1590/S0104-530X1997000300002
Abstract: this study analyses the changes that are taking place in the brazilian industry, recently involved in the process of productive globalization. it shows that drastic changes in terms of strategies, organization and management are in course, both in terms of transnational and brazilian enterprises. the main conclusion is that knowledge intensive functions such as r&d, strategic management and management systems are being transferred abroad by the tncs and the logistics function is becoming the most "strategic" function in the operation of their subsidiaries. the brazilian enterprises which succeed in operating in globalized productive chains are adopting similar structures. in the long run, those changes will be detrimental for the formation of local capabilities and consequently, for the maintenance of the competitive position of brazilian industry.
Reforma sanitária brasileira: dilemas entre o instituinte e o instituído
Ciência & Saúde Coletiva , 2009, DOI: 10.1590/S1413-81232009000300010
Abstract: the article presents the trajectory of social policies in brazil and identifies, at each stage, the existing social protection model. it affirms that the federal constitution of 1988, when it introduced the concept of social security and created the national health care system, represented a rupture with what came before. the subordination of the principles of justice and social inclusion, which guided the design of this new social protection model, to a liberal and monetarist policy had important impacts in the phase of implementation of the social policies. however, the dilemma that such policies go through and, in particular, the construction of the national health care system must be analyzed from a theoretical perspective that encompasses the agreements and disagreements between the three movements that characterize brazilian sanitary reform, which are: subjectivation, constitutionalization and institutionalization.
Desigualdades injustas: o contradireito à saúde
Fleury, Sonia;
Psicologia & Sociedade , 2011, DOI: 10.1590/S0102-71822011000400007
Abstract: the brazilian federal constitution of 1988 has assured health as a universal citizen right and created a national health care system - sus. nowadays, the brazilian society has an advanced legal construction assuring social protection trough universal social policies, but a very precarious health care services network. the aim of this paper is to analyze data from a research in public hospitals in rio de janeiro, using different qualitative techniques in order to identify the perceived factors that determine the existence of avoidable inequalities in the access and health services utilization. the results sign the poor material conditions of health services, associated with discriminatory practices as well as the use of personal relationships as a criterion to access the health system as the material forms of the counter right to health care.
Iniqüidades nas políticas de saúde: o caso da América Latina
Revista de Saúde Pública , 1995, DOI: 10.1590/S0034-89101995000300013
Abstract: four points relating to the iniquities of the health services are brought out. in the first, the economic crisis the region has been going through during recent decades, is discussed and the contention that the tendency to an overall improvement of the living conditions has not been deeply affected by this crisis is questioned. in the second the characteristics of the latin-american process of development, marked by the deenpeing of iniquities is examined. in the third an analysis of the pattern of social protection in the region is presented and in the last two polar models for the reformation of this pattern are discussed.
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