Journal articles on the topic 'Abilité dynamique'

To improve the damage ability of the hollow-charge warhead, and the utilization of the dynamite, added the prefabricated fragments at the circumferential of the shaped warhead, used the finite element software to calculate the influence of different prefabricated fragments, different shell structure on warhead's EFP and fragments performance, and also the penetration capability of them. The results show that: the performance of the damage elements formed by this anti-armor composite warhead are very well, it can damage the armored vehicles, ships and other targets, the sphere fragment can penetrate 12mm thick armor steel in 60m, and damage personnel in the 240m, EFP can penetrate the armor steel more than 0.5 times of the charge's diameter, this research can provide reference for the further research on multi-using warhead.

This study was conducted in Agboville, Ivory Coast. The objective was (1) to characterize the floristic composition, dynamics, and structure of tree diversity of postcultural fallows; and (2) establish the relationship between the diversity and storage of carbon in timber biomass. The study relied on a network of 50 temporary plots. There were 31 postcultural fallows and 19 plots of primary forest. This study has identified 417 plant species distributed in 306 genera and 83 families. Tree density within postcultural fallows varied between 1025 to 5975 stems / ha, and the analysis showed that the density increases with the age of the postcultural fallows. Tree sampling was non-destructive and to estimate C storage, an allomectric models for above and belowground biomasses was used. Mean estimate of carbon (C) stocks in biomass were 80.25 tC / ha for groupe A (fallows from 4 to 8 years) and 256.5 tC / ha for group D (fallows from 14 to 24 years). These values remain far below those seen in the groups of primary forests with lateritic soil (1335.25 tC / ha). Results showed the ability of some postcultural fallows to store much C. It demonstrated that storage depends mainly on age and conserved species. This supports the idea of employing REDD+ processes in enhancing the ecological value associated with carbon.

Prendre la décision d’émigrer est un acte de transgression qui implique des processus de rupture, de remise en cause des normes traditionnelles. L’émigration déclenche une dynamique de transgressions plurielles qui met en jeu les capacités à agir des immigrés pour s’émanciper du groupe d’origine et réaliser le rêve «d’une vie autre» ailleurs. S’appropriant l’héritage parental des «compétences d’émigration», les enfants s’inscrivent dans la continuité en refusant la «condition immigrée». Fortement diplômés, ils occupent des «places» socialement valorisées. Immigrant transgression allowing access to other « roles » in society Abstract: Deciding to emigrate is an act of transgression that involves breaking away and challenging traditional norms. Emigrating triggers a multiple transgressions dynamic that jeopardizes the immigrants' ability to cut off ties with their group of origin and to realize the dream of “another life” elsewhere. Children appropriate the parental legacy of “emigration skills” which they are perpetuating by refusing the “immigrant condition”. Highly qualified, they occupy socially valued “roles”.

In the framework of the Paleoclimate Modelling Intercomparison Project (PMIP), simulations of the Last Glacial Maximum (LGM) have- been performed. More than 10 different atmospheric general circulation models (AGCMs) have been used with the same boundary conditions: sea-surface temperatures prescribed by CLIMAP (1981), ice-sheet reconstruction provided by Peltier (1994), change in insolation, and reduced CO2 content. One of the major questions is to investigate whether the simulations of the LGM are in equilibrium with the prescribed ice-sheet reconstruction. To answer this question, we have used two different approaches. First, we analyze the results of a sel of LGM simulations performed with different versions of the Laboratoire de Meteorolo-gie Dynamique (LMD) AGCM and study the hydrologic and snow- budgets over the Laurcntide and Fennoscandian ice sheets. Second, we use the AGCM outputs to force an ice-sheet model in order to investigate its ability to maintain the ice sheets as reconstructed by CLIMAP (1981) or Peltier (1994).

In the framework of the Paleoclimate Modelling Intercomparison Project (PMIP), simulations of the Last Glacial Maximum (LGM) have- been performed. More than 10 different atmospheric general circulation models (AGCMs) have been used with the same boundary conditions: sea-surface temperatures prescribed by CLIMAP (1981), ice-sheet reconstruction provided by Peltier (1994), change in insolation, and reduced CO2 content. One of the major questions is to investigate whether the simulations of the LGM are in equilibrium with the prescribed ice-sheet reconstruction. To answer this question, we have used two different approaches. First, we analyze the results of a sel of LGM simulations performed with different versions of the Laboratoire de Meteorolo-gie Dynamique (LMD) AGCM and study the hydrologic and snow- budgets over the Laurcntide and Fennoscandian ice sheets. Second, we use the AGCM outputs to force an ice-sheet model in order to investigate its ability to maintain the ice sheets as reconstructed by CLIMAP (1981) or Peltier (1994).

Abstract. An interactive sulphate aerosol chemistry module has been incorporated in the Laboratoire de Météorologie Dynamique General Circulation Model (LMD-GCM) to simulate the sulphur chemistry during the Indian Ocean Experiment (INDOEX) Intensive Field Phase-1999 (INDOEX-IFP). The originality of this module is its ability to predict particle mass and number concentration for the Aitken and accumulation modes. The model qualitatively reproduces the spatial patterns of observations on sulphate aerosol during INDOEX. On the basis of size distribution retrieved from the observations made along the cruise route during 1998 and 1999, the model successfully simulates the order of magnitude and the general north-south gradient in aerosol number concentration. The result shows the southward migration of minimum concentrations, which follows ITCZ (Inter Tropical Convergence Zone) migration. Sulphate surface concentration during INDOEX-IFP at Kaashidhoo (73.46° E, 4.96° N) gives an agreement within a factor of 2 to 3. Predicted sulphate aerosol optical depth (AOD) matches reasonably with measured values, indicating the capability of this model to predict the vertically integrated column sulphate burden. The Indian contribution to estimated sulphate burden over India is more than 60% with values upto 40% over the Arabian Sea.

In Canadian law, the concept of autonomy is individualistic in nature, manifest as the capacity, or legal ability of an individual to actively understand the purpose and consequences of their actions according to whether they have faculties to comprehend and weigh risks and benefits. Feminist scholars critique such conceptualizations of autonomy and, instead, argue the importance of “relational autonomy” which is predicated on the view that actions result from one’s own volition in combination with the influence of one’s social and relational connections. In this paper, we examine the dynamics and implications of relational autonomy in decision-making by adults with developmental disabilities by studying adults with developmental disabilities in interaction with their caregiving family members. Our purpose is to contribute understandings of how and in what ways family caregiving relational contexts both support and hinder decision-making by adults with developmental disabilities. We begin with an overview of conceptualizations and applications of autonomy, then illustrate relational autonomy dynamics through comparative analysis of data from two women with developmental disabilities who were interviewed together with their family caregivers about successes and struggles in giving and receiving care and making decisions. These two women, and their family caregivers (N=9) are selected from a larger sample of adults with developmental disabilities and their family caregivers (N = 26) because the contrasts, as well as the similarities, between their family care situations are striking, and taken together, illustrate a range of ways in which decision-making is supported and hindered. We conclude by upholding the importance of relational autonomy for legal understandings of decision-making, yet we caution that critical examination of relationship dynamics is vital. En droit canadien, le concept de l’autonomie est un concept individualiste de par sa nature et est perçu comme l’aptitude, physique ou juridique, d’une personne à comprendre activement l’objet et les conséquences de ses actes en fonction de la question de savoir si elle possède les facultés voulues pour apprécier et soupeser les risques et les avantages en jeu. Des universitaires féministes critiquent ces conceptualisations de l’autonomie et mettent plutôt l’accent sur l’importance de l’« autonomie relationnelle », qui repose sur l’interaction entre la volonté de la personne et l’influence de ses contacts sociaux et relationnels. Dans le présent document, nous nous penchons sur la dynamique et sur les incidences de l’autonomie relationnelle dans les décisions que prennent les adultes handicapés en étudiant l’interaction d’adultes handicapés avec leurs aidants familiaux. Notre but est de favoriser une meilleure compréhension de la mesure dans laquelle les contextes relationnels dans lesquels se trouvent les aidants familiaux peuvent à la fois appuyer et entraver le processus de prise de décisions chez les adultes handicapés. Après avoir présenté un bref aperçu des conceptualisations et des applications de l’autonomie, nous illustrons la dynamique de l’autonomie relationnelle au moyen d’une analyse comparative de données provenant de deux femmes handicapées qui ont été interrogées ainsi que leurs aidants familiaux au sujet des défis et des réussites liés à la prestation et à la réception de soins et à la prise de décisions. Ces deux femmes et leurs aidants familiaux (N=9) ont été choisis à partir d’un plus grand échantillon d’adultes handicapés et de leurs aidants familiaux (N=26), parce que les contrastes, tout comme les similitudes, entre leurs situations sont frappants et que, examinées ensemble, ces données illustrent différentes façons dont la prise de décisions est appuyée et entravée. Nous concluons en insistant sur l’importance de l’autonomie relationnelle pour la compréhension des aspects juridiques de la prise de décisions, tout en soulignant qu’un examen critique de la dynamique des relations est vital.

Social and economic changes in Poland force commercial banks to face new challenges. Fierce international competition forces them to search for new ways of increasing their competitiveness. Flexibility and responsiveness to the rapidly changing needs and expectations of customers seem to be a prerequisite for main- taining the market position and building competitive advantage. This reąuires banks to develop an ability to introduce changes such as innovative financial Solutions. The widespread presence of the Internet combined with dynamie development of payment services opens new possibilities for application of innovations in mobile payments. One of the examples of applying innovative Solutions in the sector of financial services is the launching of the BLIK mobile payments system

Abstract In this study, remotely sensed soil moisture data from the Advanced Scatterometer (ASCAT) on board the Meteorological Operational (MetOp) series of satellites are assimilated in the regional forecasting model, Aire Limitée Adaptation Dynamique Développement International (ALADIN-Austria), using a simplified extended Kalman filter. A pointwise bias correction method is applied to the ASCAT data as well as quality flags prepared by the data provider. The ASCAT assimilation case study is performed over central Europe during a 1-month period in July 2009. Forecasts of those assimilation experiments are compared to the control run provided by the operational ALADIN version of the Austrian Met Service, Zentralanstalt für Meteorologie und Geodynamik (ZAMG). Forecasts are furthermore verified versus in situ data. For a single-day case study the ability of the approach to improve precipitation forecast quality in the presence of high impact weather is demonstrated. Results show that 1) based on a one station in situ data evaluation, soil moisture analysis is improved, compared to the operational analysis, when ASCAT soil moisture data is assimilated; 2) pointwise bias correction of the satellite data is beneficial for forecast quality; 3) screen level parameter forecasts can be slightly improved as a result of this approach; and 4) convective precipitation forecast is improved over flatland for the investigation period while over mountainous regions the impact is neutral.

Abstract. The Antarctic and sub-Antarctic methanesulphonic acid (MSA) to non sea salt sulphate (nssSO4) ratio is simulated with the Laboratoire de Météorologie Dynamique Atmospheric General Circulation Model including an atmospheric sulphur chemistry module. Spatial variations of the MSA/nssSO4 ratio in different regions have been suggested to be mostly dependent on temperature or sulphur source contributions. Its past variations in ice cores have been interpreted as related to the DMS precursor source location. Our model results are compared with available field measurements in the Antarctic and sub-Antarctic regions. This suggests that the MSA/nssSO4 ratio in the extra-tropical south hemisphere is mostly dependent on the relative importance of various DMS oxidation pathways. In order to evaluate the effect of a rapid conversion of dimethyl sulphoxide (DMSO) into MSA, not implemented in the model, the MSA+DMSO to nssSO4 ratio is also discussed. Using this modified ratio, the model mostly captures the seasonal variations of MSA/nssSO4 at mid and high-southern latitudes. In addition, the model qualitatively reproduces the bell shaped meridional variations of the ratio, which is highly dependent on the adopted relative reaction rates for the DMS+OH addition and abstraction pathways, and on the assumed reaction products of the MSIA+OH reaction. MSA/nssSO4 ratio in Antarctic snow is fairly well reproduced except at the most inland sites characterized with very low snow accumulation rates. Our results also suggest that atmospheric chemistry plays an important role in the observed decrease of the ratio in snow between coastal regions and central Antarctica. The still insufficient understanding of the DMS oxidation scheme limits our ability to model the MSA/nssSO4 ratio. Specifically, reaction products of the MSIA+OH reaction should be better quantified, and the impact of a fast DMSO conversion to MSA in spring to fall over Antarctica should be evaluated. Direct measurements of MSA and nssSO4 dry deposition velocities on Antarctic snow would improve our ability to model MSA and nssSO4 in ice cores.

Abstract An ensemble of limited-area forecasts has been obtained by integrating the Aire Limitée Adaptation Dynamique Développement International (ALADIN) limited-area model, in cold-starting mode, from an ensemble of Action de Recherche Petite Echelle Grande Echelle (ARPEGE) global analyses and forecasts. This permits error covariances of the ALADIN 6-h forecast and of the ARPEGE analysis to be estimated. These two fields may be combined in a future ALADIN analysis. The evolution of dispersion spectra is first studied in a perfect model framework. The ARPEGE analysis reduces the large-scale dispersion of the ARPEGE background by extracting some information from observations. Then, the digital filter initialization reduces the small-scale dispersion by removing the noise caused by interpolation of the ARPEGE analysis onto the ALADIN grid. Finally, the ALADIN 6-h forecast strongly increases the small-scale dispersion, in accordance with its ability to represent small-scale processes. Some model error contributions are then studied. The variances of the differences between the ALADIN and ARPEGE forecasts, which are started from the same ARPEGE analysis, are of smaller scale than are the ALADIN and ARPEGE perfect model dispersions. The small-scale part of these ARPEGE–ALADIN model differences is shown to correspond to structures that are represented by ALADIN and not by ARPEGE. Therefore, this part may be added to the ARPEGE analysis dispersion. The residual large-scale part is more ambiguous, but it may be added to the ALADIN dispersion; this may reflect some effects of the coupling inaccuracies, and strengthen (in a future ALADIN analysis) the use of the large-scale information from the ARPEGE analysis.

Abstract. The Antarctic and sub-Antarctic methanesulphonic acid (MSA) to non sea salt sulphate (nssSO4) ratio is simulated with the Laboratoire de Météorologie Dynamique Atmospheric General Circulation Model including an atmospheric sulphur chemistry module. Spatial variations of the MSA/nssSO4 ratio in different regions have been suggested to be mostly dependent on temperature or sulphur source contributions. Its past variations in ice cores have been interpreted as related to the DMS precursor source location. Our model results are compared with available field measurements in the Antarctic and sub-Antarctic regions. This suggests that the MSA/nssSO4 ratio in the extra-tropical south hemisphere is mostly dependent on the relative importance of various DMS oxidation pathways. In order to evaluate the effect of a rapid conversion of dimethyl sulphoxide (DMSO) into MSA, not implemented in the model, the MSA+DMSO to nssSO4 ratio is also discussed. Using this modified ratio, the model mostly captures the seasonal variations of MSA/nssSO4 at mid and high-southern latitudes. In addition, the model qualitatively reproduces the bell shaped meridional variations of the ratio, which is highly dependent on the adopted relative reaction rates for the DMS+OH addition and abstraction pathways, and on the assumed reaction products of the MSIA+OH reaction. MSA/nssSO4 ratio in Antarctic snow is fairly well reproduced except at the most inland sites characterized with very low snow accumulation rates. Our results also suggest that atmospheric chemistry plays an important role in the observed decrease of the ratio in snow between coastal regions and central Antarctica. The still insufficient understanding of the DMS oxidation scheme limits our ability to model the MSA/nssSO4 ratio. Specifically, reaction products of the MSIA+OH reaction should be better quantified, and the impact of a fast DMSO conversion to MSA in spring to fall over Antarctica should be evaluated. A better understanding of BrO source processes is needed in order to include DMS + BrO chemistry in global models. Completing the observations of DMS, BrO and MSA at Halley Bay with DMSO measurements would better constrain the role of BrO in DMS oxidation. Direct measurements of MSA and nssSO4 dry deposition velocities on Antarctic snow would improve our ability to model MSA and nssSO4 in ice cores.

Abstract In the eastern Alpine region, subinversion cloudiness associated with elevated temperature inversions is a frequent phenomenon in autumn and winter, which often persists for several days. Although the prediction of fog and low stratus by numerical weather prediction (NWP) models has improved in recent years, these models still show deficiencies in the spatial and temporal evolution of such wintertime weather phenomena. In spite of sophisticated current assimilation schemes or simply due to unknown conditions, even the analysis shows large discrepancies compared to the true atmospheric state. Inversions are often “smeared out” and the moist layer below the inversion is too far from saturation. Model integration from such an initial state leads to strong biases in the total cloudiness and, due to erroneous radiative response, in 2-m temperature forecasts. In the present paper, an empirical enhancement scheme for subinversion cloudiness is introduced within the framework of Aire Limitée Adaptation Dynamique Développement International (ALADIN), the operational limited area model (LAM) at the Austrian Central Institute for Meteorology and Geodynamics (ZAMG). The scheme attempts to compensate for model deficiencies in the vertical temperature and humidity profiles in order to enhance or keep preexisting signals of inversions and associated low cloudiness. Thus, a positive feedback due to radiative reaction is activated, which finally leads to more realistic vertical profiles, low (and total) cloudiness, and improved 2-m temperature predictions. Case studies demonstrate the impacts of the scheme on predictions of the spatial distribution of low cloudiness and on the vertical profiles of temperature and humidity. Verification over stratus episodes within a 2-month period comparing a reference model run without the scheme with a modified model version with the subinversion cloudiness scheme confirms the ability of the scheme to improve stratus-related wintertime weather prediction.

Since shape is the most important feature for recognizing objects, it has to be extracted accurately in order to enhance the content based image retrieval system, but challenges prevailed in extracting shape features of an object in an image due to inability of shape descriptor which extracts a limited number of different shapes that are not invariant, alongside the inability to extracting features of overlapping objects, and the shape connotation gap problem between low level and high level features. In order to overcome these problems, this work proposes a Superintend Gross Silhouette Descriptor which uses pixel coordinates on spatial domain of the image for finding the real shape of the object by means of straight lines so it has the ability to detect the overlapped objects as well as the polygonal shapes. After being extracted, features would be trained using a random woodland classifier which classifies the features into a group of classes at maximum convergence for mitigating the shape connotation problem. At the time of retrieval, the features of the query image would be tested with trained features for measuring the similarity by the dynamite correlation coefficient method, which is a measure of the linear correlation so it would render the absolute value of the correlation coefficient which maintains the relationship strength among features.

Abstract Mass communication has become a daily feature of our technological civilisation. This is as true of cross-cultural or intercultural encounters as it is of intra-cultural communication, and mass media have facilitated effective international information flow. Bilingual editing becomes an important medium of mass communication. The effectiveness of such communication rests upon the grammatical, lexical, sociolinguistic, socio-cultural, discourse and strategic competence of participants (editors, writers, translators and readers). It rests upon their ability to use creatively and to respond sensitively to language. In this dynamic process of communication, a bilingual editor not only plays the role of translator but also acts as a mediator; as Hatim and Mason (1990:223) suggest, s/he "has not only a bilingual ability but also a bi-cultural vision". In view of the diversity of usage of bilingual editing in the media, this research delves into the bilingual editing of magazines in Hong Kong. The study focuses on translation only from English and Chinese, or vice versa. Inasmuch as there is very little academic attention to bilingual editing and its nature, processes and techniques, or to the role of translation in bilingual editing, it is believed that this research will help facilitate cross-cultural communication between Westerners and Chinese. Résumé Dans notre civilisation, marquée par le seau de la technologie, la communication de masse relève du quotidien. Cette remarque est valable tant en ce qui concerne les rencontres interculturelles que la communication intraculturelle. De plus, la communication de masse favorise l'échange efficace des informations à l'échelon international. Les publications bilingues sont devenues un important support de la communication de masse. L'efficacité de cette communication repose sur le discours grammatical, lexical, socio-linguistique, socio-culturel et sur la compétence stratégique de ceux qui y participent (rédacteurs, écrivains, traducteurs et lecteurs). Elle repose sur leur faculté d'utiliser le langage avec créativité et d'y réagir avec sensibilité. Dans ce processus de communication dynamique, le rédacteur bilingue joue non seulement le rôle de traducteur mais aussi de médiateur, comme le suggèrent Hatim et Mason (1990:223): il ou elle "dispose non seulement d'une capacité de bilinguisme mais aussi d'une vision biculturelle". Au vu de la diversité d'emploi de la rédaction bilingue dans les médias, cette recherche fouille dans l'univers de l'édition de magazines bilingues à Hong Kong. L'étude se concentre uniquement sur la traduction de l'anglais et du chinois et vice-versa. Dans la mesure où dans les milieux académiques, on attache très peu d'importance à l'édition bilingue, à sa nature, à ses processus et techniques, ou au rôle de la traduction dans le monde de l'édition bilingue, l'auteur estime que cette recherche facilitera la communication interculturelle entre les Occidentaux et les Chinois.

The Tuwu deposit is one of a series of recently discovered porphyry copper deposits in the eastern Tian Shan range of Xinjiang, China. Since its discovery in 1997, more than ten boreholes have been drilled and a suite of geophysical surveys has been acquired to delineate the deposit. As part of the geophysical program, a set of eight seismic reflection profiles was acquired in 2000, followed by a physical rock-property study in 2001. The ores are characterized by slightly higher density (Δρ ∼ 0.1 g/cm[Formula: see text]) and significantly higher P-wave velocity ([Formula: see text] ∼ 1.0–1.5 km/s) than the dioritic host rocks. The seismic surveys used 0.6- to 0.9-kg shallow dynamite sources, with a 24-channel end-on spread and offsets up to 350 m. The orebody and associated igneous layers dip steeply (>45°) toward the south, so careful processing of the seismic data was required. Weak reflections from stratigraphic contacts are visible on most of the profiles, including the top of the intrusion and the base of the orebody. Since the observed reflections include a significant out-of-plane component, we developed a simple 2.5D migration procedure. This method was applied to line drawings of the seismic profiles, providing the basis for delineation of the orebody in three dimensions. Synthetic seismic sections computed using the inferred bounding surfaces of the ore deposit are in reasonable agreement with observed reflections, even for along-strike lines not used to build the model. The ability to verify interpreted reflections using line intersections was critical to the development of our model. The results of this work indicate that seismic methods may be useful as an aid for mapping the flanks of shallow, moderately dipping porphyry copper orebodies and associated strata, particularly for defining the structure of deeper sections of the mineralized zones in advance of drilling.

<p>Este artigo analisa os usos do(s) espaço(s) público(s) na vida urbana contemporânea, discutindo sua relevância e sua capacidade de expressar diversidade e engendrar intersubjetividades. Para isso, busca-se discutir a validade das teses que indicam a existência de um processo de diluição/restrição dos espaços públicos, analisando sua dinâmica na cidade do Salvador, Bahia, Brasil, e considerando as transformações urbanas recentes, através de revisão da literatura, coleta de dados secundários e realização de entrevistas com diversos citadinos. O artigo conclui que as transformações contemporâneas vêm favorecendo o avanço de formas de privatização e autossegregação, restringindo os usos dos espaços públicos. Porém, não se pode falar da morte desses espaços em Salvador, uma vez que seus usos sobrevivem, ainda que sejam premidos por seu caráter heterogêneo, desigual, segregado e fragmentado, situação ensejada por processos de privatização e mercantilização, violência e medo,<br />além de diferentes formas de disputas, distinções e competições.</p><p><strong>THE PUBLIC SPACE(S) IN AN UNEQUAL AND SEGREGATED CITY</strong><br /><br />This article analyzes the uses of the public spaces in the contemporary urban life, discussing their relevance and ability to express diversity and produce intersubjectivities. For that, it discusses the validity of the thesis indicating the existence of a dilution/restriction process of public spaces. Through literary review, secondary data collection, and interviews with city residents, this work sought to analyze the dynamics of public spaces in Salvador before the recent urban transformations in the city. The findings indicate that the contemporary ransformations favored privatization and selfsegregation, restricting the use of public spaces. However, one cannot speak of the “death” of public spaces in Salvador, for their uses survives – although pressed by several factors such as their heterogeneity and inequality, their segregated and fragmented character, and by privatization and commodification processes, violence and fear, forms of disputes, distinctions and competitions.</p><p>Keywords: Public space. Urban Sociability. Privatization. Segregation. Salvador.</p><p><strong>LE(S) SPACE(S) PUBLIC(S) DANS UNE VILLE INÉGALE ET SÉGRÉGÉE</strong><br /><br />Cet article analyse l’utilisation des espaces publics dans la vie urbaine contemporaine, en discutant sa pertinence actuelle et sa capacité d’exprimer la<br />diversité et créer d’intersubjectivités. Cela implique discuter la validité des thèses qui indiquent l’existence d’un processus de dilution/restriction des espaces publics, en analysant sa dynamique dans la ville de Salvador, et en considérant les récentes transformations urbaines, par l’examen de la littérature, la collecte des données secondaires et des entretiens avec plusieurs habitants. On conclut que les transformations contemporaines ont favorisé l’avancée des formes de privatisation et d’auto-ségrégation, restreignant les usages des<br />espaces publics. Cependant, ces espaces publics à Salvador ne sont pas mort ; leurs usages survivent, même s’ils sont pressé par leur caractère hétérogène,<br />inégal, ségrégé et fragmenté, situation causée par les processus de privatisation et de marchandisation, la violence et la peur, en plus de différentes formes de disputes, distinctions et compétitions.</p><p>Mots-clés: Espace public. Sociabilité urbaine. Privatisation. Ségrégation. Salvador.</p>

First introduced to the West by Vygotsky’s colleague, Luria (1961), the zone of proximal development (ZPD) has inspired an approach to evaluating learning potential known as dynamic assessment (DA). However, Vygotsky (1986) also conceived of the ZPD as a guiding principle for teaching to optimally affect learner development, a notion that has been enthusiastically researched in education. The field of applied linguistics takes as its point of departure a dialectical reading of Vygotsky, understanding assessment of the ZPD and teaching in the ZPD to be a unified process. To date, this work has focused on classroom contexts where the provision of mediation during teacher–learner interactions may simultaneously illuminate learner abilities and promote development. Examples are presented involving learners of French. D’abord introduite à l’Ouest par un collègue de Vygotsky, Luria (1961), la Zone Proximale de Développement (ZPD) a inspiré une approche visant à évaluer le potentiel d’apprentissage connue sous le nom d’Évaluation Dynamique (DA). Pourtant, Vygotsky (1986) concevait aussi la ZPD comme un principe capable de guider un enseignement visant à influencer de manière optimale le développement de l’élève, une notion qui a été explorée avec enthousiasme dans le domaine de l’éducation. Le champ de la linguistique appliquée prend comme point de départ une lecture dialectique de Vygotsky, comprenant l’évaluation de la ZPD et l’enseignement dans la ZPD dans un même processus. Jusqu’au présent, ce travail s’est centré sur les contextes de classe où l’offre de médiation au cours des interactions enseignant-élè ve peut simultanément éclairer des capacités de l’élève et promouvoir leur développement. Les exemples présentés concernent des élèves qui apprennent le français langue seconde. Zunächst von Vygotskys Kollegen Luria (1961) in der westlichen Welt vorgestellt, hat die Zone der proximalen Entwicklung (ZPE) einen Ansatz zur Untersuchung des Lernpotentials inspiriert, der als dynamische Diagnostik (Dynamic Assessment, DA) bekannt geworden ist. Vygotsky (1986) hat jedoch die ZPE auch als Leitprinzip für ein Lehren konzipiert, das optimalen Einfluss auf die Entwicklung des Lerners haben soll, eine Idee, die enthusiastisch im pädagogischen Feld untersucht wurde. Der Bereich der angewandten Linguistik nimmt als ihren Ausgangspunkt eine dialektische Auslegung von Vygotsky, bei dem die Erfassung der ZPE und das Unterrichten in dieser Zone als einheitlicher Prozess aufgefasst werden. Derzeit fokussiert diese Arbeit auf Klassenraumkontexten, wo die Bereitstellung von Mediation während Lehrer-Lerner-Interaktionen in simultaner Weise die Fähigkeiten der Lerner aufhellen kann und gleichzeitig Entwicklung fördert. Beispiele von Schülern aus dem Fremdsprachenunterricht werden vorstellt. La Zona de Desarrollo Próxima, introducida primeramente en occidente por Luria (1961), que fue discípulo de Vygotsky, ha inspirado un enfoque para evaluar el potencial de aprendizaje, entendido como una Evaluación Dinámica. Sin embargo, Vygotsky (1986) concibió la Zona de Desarrollo Próxima como una guía para la enseñanza y para optimizar el impacto del desarrollo del aprendiz, una noción que ha sido investigada de forma enfática en educación. El campo de la lingüística aplicada toma como punto de partida una lectura dialéctica de Vygotsky, una evaluación comprensiva de la Zona de Desarrollo Próxima y una enseñanza en dicha Zona para convertirlo en un proceso unificado. Este trabajo se ha focalizado en el contexto del aula, donde la provisión de la mediación se ha producido durante las interacciones entre el profesor y los estudiantes, lo cual permite iluminar simultáneamente las habilidades de los estudiantes e incrementar su desarrollo. Se presentan ejemplos relativos a estudiantes de Francés. La Zona di Sviluppo Prossimale (ZPD), sin dalla sua prima presentazione in Occidente da parte di Luria (1961) collega di Vygotsky, ha ispirato l’approccio di valutazione del potenziale di apprendimento noto come Valutazione Dinamica (DA). Tuttavia Vygotsky (1986) aveva anche concepito la ZPD come un principio guida per un insegnamento che abbia un impatto ottimale sullo sviluppo dello studente, una idea che è stata oggetto di ricerche entusiastiche in educazione. Il campo della linguistica applicata considera come punto di partenza una lettura dialettica di Vygotsky, intendendo la valutazione della ZPD e l’insegnamento nella ZPD come un processo unificato. Finora questo lavoro si è focalizzato sui contesti di classe, in cui la mediazione durante le interazioni docente-studente pu ò nello stesso tempo mettere in luce le abilit à dello studente e promuovere lo sviluppo. Vengono presentati esempi che coinvolgono studenti francesi.

ESTÉTICAS DE COMUNICACIÓN Y POLÍTICAS DE LA MEMORIARESUMENLa crisis en las categorías de interpretación de la realidad implica hoy un desplazamiento de aquellos determinantes del cambio social basados en las tecnologías, para situarlos con mayor capacidad de comprender sus consecuencias en los cuerpos y su dimensión política. La explicación de la densa y paradójica convivencia de innumerables opuestos en los contextos sociales actuales se basa en el complejo y dinámico entrelazamiento de modos de simbolización y ritualización del lazo social con el espesor sociocultural adquirido por las redes y los flujos tecnodigitales que han redefinido las fronteras espaciales y temporales entre razón e imaginación, saber e información, naturaleza y artificio, ciencia y arte, saber experto y experiencia profana. Un nuevo lugar es necesario para las prácticas y experiencias en las que alumbra un saber-sentir que reduce la capacidad del hecho tecnológico como determinante de la restructuración social. Estas prácticas y experiencias se debaten en tres tensiones: la temporalidad: entre la amnesia y la memoria; el territorio: entre el espacio y el lugar; y el arte: entre el museo y las performancias ciudadanas.PALABRAS CLAVESFlujos tecnodigitales, globalización, memoria, aceleración modernizadora, des-tiempos, sociedad-red. PARLUKUNAIACHAIKUNA MANA WAÑUNGAPA MAILLALLACHISKASUGLLAPIKunaura kawanakunchi amasan tukuchinaku Ñugpamanda kaugsakuna, Kunaura kawanchi, vianchi subrigchakuna kawaipi, kaugsaipi nukanchipa atun llagtapi. Ministinchimi Chasallata muso luarkuna ikute kallaringapa Ruraikuna. Iachaikuna kawachingapa Iachai- kaugsai Tukuikunata kausachingapa maillapas tukuikunamanda Kai ruraikuna iachaikuna parlanchimi kimsapi achaka llullapi- atun llagtapi- maipi kaskapi Ima ruradirupi, kawaringapa, tukuikunamanda.IMA SUTI RIMAI SIMI:Achakukuna, lluia- lijirú, allichiska, unaimanda, tukuikuna. THEAESTHETICS OF COMMUNICATION AND THE POLITICS OF MEMORYABSTRACTThe crisis in the categories of interpretation of reality implies today a shift of those determinants of social change that are based on technologies, in order to make them more able to understand their impact on the body and its political dimension. The explanation for the dense and paradoxical coexistence of opposites in many current social contexts is founded upon the complex and dynamic interweaving of modes of symbolization and ritualizing of social ties, with the sociocultural thickness acquired by the techno-digital networks and flows that have redefined the spatial and temporal boundaries between reason and imagination, knowledge and information, nature and artifice, art and science, expert knowledge and worldly experience. A new place is necessary for practices and experiences that give birth to a form of knowing-feeling that reduces the ability of the technological fact as a determining factor of societal restructuring. These practices and experiences are discussed within three tensions: Temporality: between amnesia and memory; the territory: between space and place; and art: between the museum and citizen performances. KEYWORDSTechnodigital flows, globalization, memory, modernizing acceleration, un-time, net worked society.ESTHÉTIQUES DE LA COMMUNICATION ET POLITIQUES DE LA MÉMOIRERÉSUMÉLa crise dans les catégories d’interprétation de la réalité implique aujourd’hui un déplacement de ces déterminants du changement social basés sur les technologies, pour les placer en mesure de mieux comprendre leur impact sur le corps et sa dimension politique. L’explication de la coexistence dense et paradoxale d’éléments opposés dans de nombreux contextes sociaux actuels répose dans l’imbrication de modes complexes et dynamiques de symbolisation et de ritualisation de liens sociaux avec l’épaisseur socioculturel acquise par les réseaux et les flux techno-numériques qui ont redéfini les frontières spatiales et temporelles entre la raison et l’imagination, entre la connaissance et l’information, entre la nature et l’artifice, entre l’art et la science, entre la connaissance experte et l’expérience profane. Un nouveau lieu est nécessaire pour les expériences et pratiques d’où surgit un savoir-sentir qui réduit la capacité de l’événement technologique comme seul fait déterminant de la restructuration sociale. Ces pratiques et expériences sont discutées à l’intérieur de trois tensions : la temporalité : entre l’amnésie et la mémoire ; le territoire : entre l’espace et le lieu ; et l’art : entre le musée et les performances citoyennesMOTS-CLEFSFlux techno-numériques, mondialisation, mémoire, accélération modernisatrice, contretemps, société-réseauESTÉTICAS DE COMUNICAÇÃO E POLÍTICAS DA MEMÓRIARESUMOA crise nas categorias de interpretação da realidade implica hoje um deslocamento daqueles determinantes da mudança social baseada nas tecnologias, para situá-los com maior capacidade de compreender suas conseqüências, nos corpos e sua dimensão política. A explicação sobre a densa e paradoxal convivência de inumeráveis opostos nos contextos sociais atuais do laço social com a espessura sócio-cultural adquirido pelas redes e os fluxos tecnos-digitais que hão redefinido as fronteiras espaciais e temporais dos saberes entre razão e imaginação, saber e informação, natureza e artifício, ciência e arte, saber experto e experiência profana. Um novo lugar é necessário para as práticas e experiências nas que iluminam um saber-sentir que reduz a capacidade do fato tecnológico como determinante da reestruturação social. Estas práticas e experiências se debatem em três tensões: a temporalidade: entre a amnésia e a memória; o território: entre o espaço e o lugar; e a arte: entre o museu e as performances cidadãs.PALAVRAS CHAVESFluxo técno-digitáis, globalização, memoria, aceleração modernizadora, dês-tempos, sociedade-rede.

The extractives industry is crucial to Africa’s economy. Mineral resources play an important role in the economic growth of many nations on the continent. The extraction of mineral resources is done by mining companies, most of which are transnational corporations (TNCs). The manner in which these mining TNCs handle waste from the mining process is usually not environmentally friendly, resulting in serious damage to the sustainability of natural resources such as land, water and the ecosystem at large. The states in which these TNCs operate fail to regulate the activities of the TNCs for a number of reasons. Apart from political factors, such reasons include a lack of strong domestic and international laws to address environmental pollution by mining TNCs. The public trust doctrine (PTD) has been celebrated as the ultimate environmental protection tool. Its ability to conform to changing public interests is evidenced by its development. Traditionally, the PTD’s original trustee was the sovereign state. However, this paper will argue that the rise of TNCs – particularly mining TNCs – in Africa has led to the transfer of public roles from the state to the mining TNCs. The conduct of these TNCs has resulted in huge environmental damage on the continent. There is therefore a need for a paradigm shift in environmental law by imposing the PTD on such TNCs. This paper argues that, bearing in mind the fundamental dynamics of the relationship between mining TNCs and the countries in which they operate on the continent, these TNCs have emerged as the dominant governance institutions. The largest of them reaches virtually every country of the world and exceeds most governments in size and power. As a result, the corporate interest rather than the human interest defines the policy agendas of states and international bodies, including the policy agendas and processes of environmental protection. Invariably, TNCs have assumed some of the crucial public roles that were historically the basis for the sovereign state to be the trustee of natural resources. This paper therefore examines the PTD as a legal phenomenon and isolates the concepts that make it an effective legal environmental protection tool on the African continent. It then discusses the characteristics that make the sovereign state an ‘automatic’ trustee of the PTD. The paper then identifies the emerging characteristics of mining TNCs and considers the justifications for advocating the use of the PTD on the international law platform to hold these TNCs accountable for environmental damage on the continent. L’industrie extractive est cruciale pour l’économie de l’Afrique. Les ressources minérales jouent un rôle important pour le développement de beaucoup de pays sur le continent. L’extraction des ressources minérales se fait par des compagnies minières dont la plupart sont des sociétés multinationales (SMs). La manière avec laquelle ces sociétés minières SMs manipulent les résidus miniers n’est très souvent pas respectueux de l’environnement, entraînant ainsi de graves dommages quant à la durabilité des ressources naturelles telle que la terre, l’eau et de manière générale l’écosystème. Les États dans lesquels ces SMs opèrent, sont incapable pour diverses raisons de réguler les activités des SMs. Hormis les facteurs politiques, ces raisons incluent une carence de lois nationales et internationales qui adressent de façons efficaces la pollution de l’environnement by les sociétés minières SMs. La doctrine de la confiance publique (DCP) a été célébrée comme l’ultime arsenal de protection de l’environnement. Sa capacité de s’adapter au changement des intérêts du public justifie son essor. Traditionnellement, la souveraineté de l’État était le garant de la DCP. Cet article soutient toutefois que la montée des SMs – sociétés minières SMs en particulier- en Afrique a donné lieu à un transfert des rôles publics de l’État aux sociétés minières SMs. L’action de ces SMs a conduit à un désastre environnemental sur le continent. Il y a donc une nécessité d’un changement de la loi sur l’environnement en imposant la DCP aux SMs. Cet article argumente que considérant les dynamiques fondamentales de la relation entre les sociétés minières SMs et les pays dans lesquels elles opèrent sur le continent, ces SMs ont émergé comme des institutions de gouvernance dominantes. La plus grande d’entre elles sont pratiquement dans tous les pays du monde et dépassent la plupart des gouvernements en grandeur et puissance. De ce fait, l’agenda politique des États et les agences internationales incluant les agendas politiques et les processus de protection de l’environnement sont définis par les intérêt de l’entreprise et non l’intérêt humain. Invariablement, les SMs ont assumé certains des rôles publics cruciaux qui jadis étaient dévolus à l’État souverain comme gardien/garant des ressources naturelles. Cet article examine donc les SMs comme un phénomène juridique en dissociant les concepts qui font d’elles un outil juridique de protection de l’environnement sur le continent africain. Il examine ensuite les caractéristiques qui font de l’État souverain un gardien/garant « automatique » de la DCP. Se faisant, l’article identifie les caractéristiques émergeantes des sociétés minières SMs et préconise comme justificatif l’utilisation de la DCP en droit international pour tenir responsables ces SMs des dommages causés sur l’environnement sur le continent.

At the current stage of social and economic development of Ukraine, the processes of globalization, integration and informatization of society raise qualitatively new challenges in the field of higher education. Ukraine has recently been focusing on European countries, which consider the tourism sector as a priority area for their economic development. This area of ​​investment is very attractive, creates new jobs and is characterized by a high level of efficiency. Therefore, the socio-economic success of the country as a whole depends on the professional training of future tourists. The basis for the development of specialist-tourist skills is mathematical disciplines, including the discipline "Higher and Applied Mathematics". There is an intensive process of mathematization of knowledge, involving mathematical apparatus in the study of natural sciences, humanities, economics and social sciences, which in turn forms a certain level of mathematical culture of students of universities. The purpose of teaching the course "Higher and Applied Mathematics" is to provide students with basic knowledge of mathematics, which enable them to further master the professional disciplines based on mathematical concepts. In this case, considerable attention should be paid to the formation of practical skills, the ability to apply mathematical methods when solving the tasks of professional activity. One of the tools for improving the quality of mathematical education for students-tourists is to update the content of courses that are read in the context of the future profession and modern socio-economic order. When considering a particular material, the idea of ​​its connection with the future profession should be put on the foreground. In this regard, the course "Higher and Applied Mathematics" for students-tourists VNAU contains several critical sections covering all the main areas of application of mathematical methods in the tourism sector. Teaching is carried out in accordance with the typical curriculum for higher education institutions in the discipline "Higher and Applied Mathematics" for the specialty "Tourism", developed by the teachers of the Department of Mathematics, Physics and Computer Technologies, VNU taking into account the principle of professional orientation. Given the fact that for students the most important is the practical aspect of mathematics, the purpose of the course is to familiarize with the basic concepts and methods of studying modern mathematics necessary for further study of professional disciplines, as well as the formation of skills for the correct mathematical formulation of applied problems and the construction of simple mathematical models. The solution of many applications is due to cumbersome mathematical calculations, the need to visually present the results of calculations, check them, so it is advisable to use computer mathematical systems, in particular, Maccats, in practical classes in mathematics. Teachers of the Department of Mathematics of Physics and Computer Technologies are the ones who prefer it. To work with Mathcad, there are basic elementary skills in working with Windows applications, so you need to implement this environment from the first lessons when studying topics such as Linear Algebra, Differential and Integral Computing, Elements of Probability Theory and Mathematical Statistics. The use of information and communication technologies (ICT) in the educational process greatly enhances the opportunities of both the teacher and the student's cognitive abilities. ICTs allow to visualize and dynamize the process of studying the discipline "Higher and Applied Mathematics", to personalize and direct the educational process for the comprehensive development of personality, to substantially increase the volume, sources of receipt and the nature of the information necessary for a person, the means of its processing. They can have a significant impact on the methodology of holding higher and applied mathematics classes, requiring the teacher to use electronic textbooks, lecture notes, practical work, the testing system for assessing student knowledge, and global sources of information. They also facilitate the organization of effective independent work in non-attendance time for students. It should be noted that to date there are quite a few tutorials, collections of tasks that contain applied tasks that can be considered at lectures and practical classes on higher and applied mathematics. Work on the creation of such methodological materials is conducted, in particular, at the Department of Mathematics, Physics and Computer Technologies. Thus, changing requirements for a specialist in the field of tourism, which is conditioned by modernity, requires a permanent rearrangement of the structural elements of its preparation. Fundamental disciplines to a large extent are applied, and therefore a qualitative assimilation of basic and basic concepts of mathematical disciplines will contribute to the competitiveness and qualitative training of the future specialist.

Summary Time-lapse three-dimensional (3D) seismic, which geophysicists often abbreviate to four-dimensional (4D) seismic, has the ability to image fluid flow in the interwell volume by repeating a series of 3D seismic surveys over time. Four-dimensional seismic shows great potential in reservoir monitoring and management for mapping bypassed oil, monitoring fluid contacts and injection fronts, identifying pressure compartmentalization, and characterizing the fluid-flow properties of faults. However, many practical issues can complicate the simple underlying concept of a 4D project. We address these practical issues from the perspective of a reservoir engineer on an asset team by asking a series of practical questions and discussing them with examples from several of Chevron's ongoing 4D projects. We discuss feasibility tests, technical risks, and the cost of doing 4D seismic. A 4D project must pass three critical tests to be successful in a particular reservoir: Is the reservoir rock highly compressible and porous? Is there a large compressibility contrast and sufficient saturation changes over time between the monitored fluids? and Is it possible to obtain high-quality 3D seismic data in the area with clear reservoir images and highly repeatable seismic acquisition? The risks associated with a 4D seismic project include false anomalies caused by artifacts of time-lapse seismic acquisition and processing and the ambiguity of seismic interpretation in trying to relate time-lapse changes in seismic data to changes in saturation, pressure, temperature, or rock properties. The cost of 4D seismic can be viewed as a surcharge on anticipated well work and expressed as a cost ratio (seismic/wells), which our analysis shows ranges from 5 to 35% on land, 10 to 50% on marine shelf properties, and 5 to 10% in deepwater fields. Four-dimensional seismic is an emerging technology that holds great promise for reservoir management applications, but the significant practical issues involved can make or break any 4D project and need to be carefully considered. Introduction Four-dimensional seismic reservoir monitoring is the process of repeating a series of 3D seismic surveys over a producing reservoir in time-lapse mode. It has a potentially huge impact in reservoir management because it is the first technique that may allow engineers to image dynamic reservoir processes1 such as fluid movement,2 pressure build-up,3 and heat flow4,5 in a reservoir in a true volumetric sense. However, we demonstrate that practical operational issues easily can complicate the simple underlying concept. These issues include requiring the right mix of business drivers, a favorable technical risk assessment and feasibility study, a highly repeatable seismic acquisition survey design, careful high-resolution amplitude-preserved seismic data processing, and an ultimate reconciliation of 4D seismic images with independent reservoir borehole data and history-matched flow simulations. The practical issues associated with 4D seismic suggest that it is not a panacea. Four-dimensional seismic is an exciting new emerging technology that requires careful analysis and integration with traditional engineering data and workflows to be successful. Our objective in this paper is to provide an overview of the 4D seismic method and illuminate the practical issues important to an asset team reservoir engineer. For this reason, we do not present a comprehensive case study of a single 4D project here, but instead draw examples from several Chevron 4D projects to illustrate each of our points. We have structured this paper as a series of questions an engineer should ask before undertaking any 4D seismic project: What is 4D seismic? What can 4D seismic do for me? Will 4D seismic work in my reservoir? What are the risks with 4D seismic? What does 4D seismic cost? We answer these questions, highlight important issues, and offer lessons learned, rules of thumb, and general words of advice. What Is 4D Seismic? To describe the basic concepts underlying 4D seismic, we briefly review the seismic method in general6 and then consider the advantages of the time-lapse aspect of 4D seismic. In a single 3D seismic survey, seismic sources (dynamite, airguns, vibrators, etc.) generate seismic waves at or near the earth's surface. These source waves reflect off subsurface seismic impedance contrasts that are a function of rock and fluid compressibility, shear modulus, and bulk density. Arrays of receivers (geophones or hydrophones) record the reflected seismic waves as they arrive back at the earth's surface. Applying a wave-equation-imaging algorithm7 to the recorded wavefield creates a 3D seismic image of the reservoir rock and fluid property contrasts that are responsible for the reflections. Four-dimensional seismic analysis involves simply repeating the 3D seismic surveys, such that the fourth dimension is calendar time,8 to construct and compare seismic images in time-lapse mode to monitor time-varying processes in the subsurface during reservoir production. The term 4D seismic is usually reserved for time-lapse 3D seismic, as opposed to other time-lapse seismic techniques that do not have 3D volumetric coverage [e.g., two dimensional (2D) surface seismic, and the borehole seismic methods of vertical seismic profiling and crosswell seismic9,10]. Four-dimensional seismic has all the traditional reservoir characterization benefits of 3D seismic,11 plus the major additional benefit that fluid-flow features may be imaged directly. To first order, seismic images are sensitive to spatial contrasts in two distinct types of reservoir properties: time-invariant static geology properties such as lithology, porosity, and shale content; and time-varying dynamic fluid-flow properties such as fluid saturation, pore pressure, and temperature. Fig. 1 shows how the seismic impedance of rock samples with varying porosity changes as the pore saturation changes from oil-full to water-swept conditions. Given a single 3D seismic survey, representing a single snapshot in time of the reservoir, the static geology and dynamic fluid-flow contributions to the seismic image couple nonuniquely and are, therefore, difficult to separate unambiguously. For example, it may be impossible to distinguish a fluid contact from a lithologic boundary in a single seismic image, as shown in Frames 1 and 2 of Fig. 2. Examining the difference between time-lapse 3D seismic images (i.e., 4D seismic) allows the time-invariant geologic contributions to cancel, resulting in a direct image of the time-varying changes caused by reservoir fluid flow (Frame 3 of Fig. 2). In this way, the 4D seismic technique has the potential to image reservoir scale changes in fluid saturation, pore pressure, and temperature during production.

This article aims to discuss, from a critical theory perspective, the apparent paradox between the ability to monitor and control made possible by Big Data and the belief in the latter’s emancipatory potential. The goal is to assess to what extent the data, tools and methods characteristic of Big Dataconstitute self-regulation processes that are similar to a dynamics of governance and surveillance. We will analyze this phenomenon on the basis of two concepts inherited from the critical tradition in social science, namely that of the administered world as formulated by the Frankfurt School theorists, and that of governmentality as developed by Michel Foucault.Cet article a pour objectif de discuter, du point de vue de la théorie critique, de cet apparent paradoxe entre les capacités de contrôle et de surveillance rendues possibles par le Big Data et la croyance en son potentiel émancipateur. Il s’agit d’évaluer dans quelle mesure les données, outils et méthodes caractéristiques du Big Data constituent des processus d’autorégulation qui s’assimilent à une dynamique de gouvernance et de surveillance. Nous allons analyser ce phénomène à partir de deux notions héritées de la tradition critique en science sociale, soit celle de monde administré formulée par les théoriciens de l’École de Francfort, et celle de gouvernementalité développée par Michel Foucault.

Abstract: With the rise of the Internet, fans have engaged in a variety of online discussions related to their interests: newsgroups in the “alt.music” and “alt.fan” categories are full of groups devoted to specific music genres and individual Abstract: With the rise of the Internet, fans have engaged in a variety of online discussions related to their interests: newsgroups in the “alt.music” and “alt.fan” categories are full of groups devoted to specific music genres and individual stars. But what is of interest in this context is the transformation of those other, more-or-less organized, “official” fan clubs, where the tensions between fandom and organized consumption are most evident. In this regard, online fan clubs have taken on a new dynamic: marked by the appearance of a more direct form of dialogue between artist and fans and a more regular, even daily, ability to connect both artists with fans and fans with one another, fan clubs are now regarded as a new kind of “community” by some and a new source of revenue by others. This paper discusses how Internet fan clubs have become an important mediating factor in relationships between fans and artists, and between fans themselves. Resumé : Depuis la montée d’Internet, les fans participent à une diversité de discussions en ligne associées à leurs intérêts : à ce titre, des groupes de nouvelles comme « alt.music » ou « alt.fan » rassemblent pleins de groupes consacrés à des vedettes ou genres musicaux particuliers. Ce qui est intéressant dans ce contexte, c’est la transformation de ces autres clubs prétendument officiels d’admirateurs plus ou moins organisés, où les tensions entre fans et la consommation organisée sont les plus en évidence. Ces clubs en ligne ont dû adopter une nouvelle dynamique : ils sont marqués par une forme plus directe de dialogue entre artistes et admirateurs et des échanges plus fréquents — voire quotidiens — entre artistes et admirateurs ainsi que parmi ces derniers. Certains perçoivent ces clubs comme une nouvelle sorte de « communauté » tandis que d’autres les perçoivent comme une nouvelle source de revenus. Cet article explique comment les clubs d’admirateurs en ligne sont devenus un facteur médiateur important dans les rapports entre artistes et fans ainsi que parmi ces derniers.

Abstract Humpback and blue whales are large baleen-bearing cetaceans, which use a unique prey-acquisition strategy—lunge feeding—to engulf entire patches of large plankton or schools of forage fish and the water in which they are embedded. Dynamically, and while foraging on krill, lunge-feeding incurs metabolic expenditures estimated at up to 20.0 MJ. Because of prey abundance and its capture in bulk, lunge feeding is carried out at high acquired-to-expended energy ratios of up to 30 at the largest body sizes (∼27 m). We use bio-logging tag data and the work-energy theorem to show that when krill-feeding at depth while using a wide range of prey approach swimming speeds (2–5 m/s), rorquals generate significant and widely varying metabolic power output during engulfment, typically ranging from 10 to 50 times the basal metabolic rate of land mammals. At equal prey field density, such output variations lower their feeding efficiency two- to three-fold at high foraging speeds, thereby allowing slow and smaller rorquals to feed more efficiently than fast and larger rorquals. The analysis also shows how the slowest speeds of harvest so far measured may be connected to the biomechanics of the buccal cavity and the prey’s ability to collectively avoid engulfment. Such minimal speeds are important as they generate the most efficient lunges. Sommaire Les rorquals à bosse et rorquals bleus sont des baleines à fanons qui utilisent une technique d’alimentation unique impliquant une approche avec élan pour engouffrer de larges quantités de plancton et bancs de petits poissons, ainsi que la masse d’eau dans laquelle ces proies sont situés. Du point de vue de la dynamique, et durant l’approche et engouffrement de krill, leurs dépenses énergétiques sont estimées jusqu’à 20.0 MJ. À cause de l’abondance de leurs proies et capture en masse, cette technique d’alimentation est effectuée à des rapports d’efficacité énergétique (acquise -versus- dépensée) estimés aux environs de 30 dans le cas des plus grandes baleines (27 m). Nous utilisons les données recueillies par des capteurs de bio-enregistrement ainsi que le théorème reliant l’énergie à l’effort pour démontrer comment les rorquals s’alimentant sur le krill à grandes profondeurs, et à des vitesses variant entre 2 et 5 m/s, maintiennent des taux de dépenses énergétiques entre 10 et 50 fois le taux métabolique basal des mammifères terrestres. À densités de proies égales, ces variations d’énergie utilisée peuvent réduire le rapport d’efficacité énergétique par des facteurs entre 2x et 3x, donc permettant aux petits et plus lents rorquals de chasser avec une efficacité comparable à celle des rorquals les plus grands et rapides. Notre analyse démontre aussi comment des vitesses d’approche plus lentes peuvent être reliées à la biomécanique de leur poche ventrale extensible, et à l’habilitée des proies à éviter d’être engouffrer. Ces minimums de vitesses sont importants car ils permettent une alimentation plus efficace énergétiquement.