O Estado do Tocantins possui a totalidade do território inserido na Amazônia Legal, sendo o baixo curso da Bacia do Ribeirão Taquaruçu Grande em Palmas, uma região de agroecossistemas de produção familiar com diversidade biocultural. Todavia, esses agroecossistemas sofreram grandes transformações ocasionadas pela criação de Palmas, que desencadearam reorganização e adaptabilidade nos sistemas. O objetivo geral do presente estudo foi analisar as transformações bioculturais desses agroecossistemas que propiciam a manutenção da diversidade biocultural e a resiliência para a sustentabilidade. Baseou-se numa integração de métodos qualitativos e quantitativos, com arcabouço teórico metodológico da dialética da complexidade sistêmica, resiliência de sistemas socioecológicos, etnoecologia e transdisciplinaridade. Os resultados indicaram os fatores desencadeantes de mudanças ao longo da trajetória da área estudada e os impactos de fatores externos de uma escala maior (regional e nacional) com a qual o sistema focal se relaciona em escalas maiores e menores, alterando sua capacidade adaptativa e a aprendizagem dos sistemas. Foi identificado no complexo biológico-cultural as diversidades: biológica, cultural, agrícola e paisagística que configura a riqueza em sociobiodiversidade dessa região. O sistema de uso da terra é caracterizado por uma longa persistência histórica e uma forte conexão com os sistemas sociais e ambientais que o produzem. Os processos produtivos e os saberes locais que levaram à construção das paisagens são responsáveis pela manutenção da diversidade dos ambientes locais. A estrutura complexa do mosaico de paisagem nessas áreas é uma ilustração exemplar da diversidade biocultural. A avaliação de resiliência apontou indicadores bioculturais nos quais o sistema se manteve resiliente na manutenção da diversidade biocultural apesar das transformações ocorridas após a urbanização, todavia, essa resiliência não levou à sustentabilidade dos agroecossistemas com risco de perda de saberes locais não transmitidos intergeracionalmente. Para a sustentabilidade é necessária uma gestão adaptativa que inclua o uso racional dos bens comuns e os saberes para a criação de políticas públicas voltadas para as necessidades locais. / The Tocantins State has the totality of its territory inserted into the Brazilian Legal Amazon and it has in it the small stream of Taquaruçu Grande Basin in the city of Palmas, a region of agroecosystems of familiar production and biocultural diversity. However, these agroecosystems suffered such important modifications with the creation of Palmas that caused reorganization and systems adaptability. The main goal of this study was to analyse the biocultural modifications of these agroecosystems which provide the maintenance of the biocultural diversity and the resilience for the sustainability. This study was based on an integration of qualitative and quantitative with the theoretical methodology of dialectics of systemic complexity, resilience of socioecological systems, ethnoecology and transdisciplinarity. The data collected indicated the triggering events of the changes over the trajectory of the studied area and the impacts of external factors of a higher scale (regional and national) in which the focal system is related to higher and lower scales, changing its capability of adaptability and the system learning. In the complex of biologic-cultural, it was also noticed the following diversities: biological, cultural, agricultural and landscape which figure the wealth in socio-biodiversity of this region. The using system of the land is characterized by a long historical persistence and strong connection with the social and environmental system that it can produce. The productive processes and the local knowledge which leaded to the building of the landscape are responsible for the maintenance of local environmental diversity. The complex structure of the mosaic of the landscapes in these areas is an exemplar illustration of biocultural diversity. The resilience evaluation pointed out biocultural indicators in which the system kept itself resilient in the maintenance of biocultural diversity even after the occurred modifications caused by the urbanization, but, this resilience did not lead to sustainability of the agroecosystems with losing risk of local knowledge which were not transmitted across generations. For the sustainability it is necessary an adaptative management which includes the rational using of common goods and knowlege in order to create public policies towards local needs.

Le e-learning, et plus particulièrement l’enseignement à distance, est ici appréhendé comme terrain d’étude pour le chercheur en sciences de l’information et de la communication (SIC). La problématique adopte une démarche pluridisciplinaire; ancrée sur les Sciences de l’Information et de la Communication, elle intègre, sous une forme systémique, des apports heuristiques des sciences de l'éducation, de l’épistémologie, des sciences cognitives et des sciences humaines. Elle questionne la pertinence du système de communication au sein des dispositifs d’enseignement et de formation à distance.Les technologies numériques de l’information et de la communication (TNIC) intégrées dans des environnements d’apprentissage ouvrent de nouveaux horizons pour l’éducation à travers le développement de l'enseignement à distance (EAD) permettant de dépasser les contraintes d’espace et de temps souvent imposées par le système éducatif traditionnel. Nous proposons d'étudier ces dispositifs en insistant sur la pertinence et l'importance de la communication dans leur performance et réussite car nous constatons, à travers une étude empirique menée sur un centre de télé-enseignement en sciences, qu’il ne suffit pas d’inscrire les apprenants sur une plateforme dédiée à l’enseignement et à la transmission de savoirs pour que ces derniers s’accrochent à leur formation, atteignent leurs objectifs et acquièrent des compétences. / Elearning has been chosen as a field study on Information and Communication Sciences (ICS). The problem takes a multidisciplinary approach: anchored on Information and Communication Sciences, it integrates, in a systemic form, heuristic contributions of educational sciences, epistemology, cognitive sciences and humanities. It questions the relevance of the communication system within distance systems of education and training.Integrating numerical technologies of information and communication in learning environments open up new horizons for education by developing distance education to overcome space and time constraints often imposed by the traditional education system. We propose to study these devices with an emphasis on the relevance and the importance of communication on their performance and success. As we see, through an empirical study on a distance education center, that it is not enough to register learners on a platform dedicated to teaching and transmitting knowledges to make them cling to their training, achieve their goals and get skills.

Dans ses documents officiels, le Magistère de l’Église catholique qualifie souvent la contraception artificielle intraconjugale d’acte intrinsèquement mauvais. Le recours à cette notion semble considérer la nature biologique comme l’index impératif d’une norme morale sans autre considération. De quoi dépend alors la moralité d’un acte ? Une technique, prise en elle-même, comporte-t-elle une valeur morale définie ? Pour répondre à ces questions, nous avons retracé l’évolution de cette notion à travers une relecture de ses enjeux théologiques en les fondant sur la circulation de plusieurs pôles de réflexion (Écriture, Tradition, raison, sciences, vécu). Pour dissiper les ambiguïtés liées à cette notion, nous avons estimé qu’il serait préférable d’employer l’expression d’acte injustifiable plutôt que celle d’acte intrinsèquement mauvais. La notion d’acte injustifiable a l’avantage de faire droit à l’herméneutique et à l’exercice de la raison pratique dans le discernement éthique. Ainsi, on peut faire droit à la pluralité et articuler au mieux la temporalité et la complexité systémique dans le jugement moral des actes humains / In its official documents, the Magisterium of the Catholic Church often refers to intra-marital artificial contraception as an intrinsically evil act. The use of this concept seems to consider the biological nature as an imperative index of a moral standard without other considerations. If artificial contraception is wrong in itself, then what place do we give to conscience and freedom of couples in birth control? Is there an irreducible opposition between the natural law and contraceptive techniques? Does a technique, if taken by itself, hold a defined moral value? To answer these questions, we have traced back the evolution of this concept through a rereading of its anthropological-theological issues based on the circulation of several poles of thought (Scripture, Tradition and Reason, Humanities, Experience, etc.). To dispel any equivocities and ambiguities related to this concept, we believe it is better to use the term unjustifiable act rather than that of an intrinsically evil act. The concept of unjustifiable act has the advantage of granting hermeneutics and the use of practical reason in ethical discernment. In this way, we can honor otherness (recognition of particularities and subjectivities, while searching for the universal), grant the plurality of actions, norms and systems of legitimation of standards and allow regulation to better enable the regulation of historicity, temporality and systemic complexity in moral judgment of human actions.