1,721,233 research outputs found
Les relations entre acteurs associatifs et Etat, clé de compréhension des Révolutions arabes
No full textLe développement, une affaire d’ONG ? Associations, Etats et bailleurs dans le monde arabe
No full textLa plupart des régimes arabes subissent aujourd'hui une pression extrême de leur population. Leur autoritarisme est mis en cause, mais également leur capacité à produire du développement et du bien-être collectif, alors que le chômage, l'insécurité sociale et la pauvreté fragilisent leurs sociétés. Comment les associations de développement, qui se sont multipliées ces dernières années, participent-elles à la nouvelle donne créée par le "printemps arabe" de 2011 ?
Les auteurs de cet ouvrage cherchent à comprendre les dynamiques qui ont amené des associations très diverses à s'investir de missions qui, pendant plusieurs décennies, avaient incombé aux Etats. Quels sont en particulier les rapports complexes qui les lient à "la fabrique de l'action publique" dans les pays arabes étudiés (Maroc, Yémen, Liban, Syrie, Jordanie et, dans une moindre mesure, Palestine) ?
Ce livre analyse les relations à géométrie variable que les acteurs associatifs entretiennent avec le politique, la chose publique, le pouvoir étatique et les bailleurs de fonds internationaux. Ses auteurs prêtent attention pour cela aux histoires "réelles" de certains projets de développement, sans céder aux sirènes des théories en usage sur les vertus de la société civile et sans considérer le monde associatif comme un ensemble monolithique
Projets, relations et fabrique des politiques publiques. Une (nouvelle) introduction aux associations et ONG dans le monde arabe
No full textDroplet-induced optical effects in an opto-microfluidic cross-configuration system
Full text linkA comprehensive description of all the optical phenomena occurring when light interacts with a moving dispersed phase in a constrained environment such as a real microfluidic channel is needed to perform a quantitative analysis as well as predictive one. This requires identifying fingerprints in the detected optical signal that are doubtlessly correlated with the shape and content type of the dispersed phase from those connected to uncertainties of the optical detection systems and/or instabilities in the microfluidics apparatus leading to dispersed phase size distribution. This article aims to model all the droplet-induced optical effects in an opto-microfluidic cross-configuration system and quantify how diffraction, transmission, absorbance, and reflection contribute to the overall response in the detected intensity after light-matter interaction. The model has been tested in the case of water droplets dispersed in hexadecane continuous phase as generated in an opto-microfluidic platform where optical waveguides are fully integrated with the microfluidic channels, so that light illuminates the flowing droplets from the channel wall and collected on the opposite side. A critical discussion of the impact of geometry and constrains is proposed as well as the impact of each contribute in terms of fingerprints in the detected signal. The good agreement obtained demonstrates the potentialities of both the derived model and the cross-configuration, getting information on droplet characteristics from the intensity arising from its light interaction
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Opto-Microfluidic Integration of the Bradford Protein Assay in Lithium Niobate Lab-On-A-Chip
Full text linkThis paper deals with the quantification of proteins by implementing the Bradford protein assay method in a portable opto-microfluidic platform for protein concentrations lower than 1.4 mg/mL. Absorbance is measured by way of optical waveguides integrated to a cross-junction microfluidic circuit on a single lithium niobate substrate. A new protocol is proposed to perform the protein quantification based on the high correlation of the light absorbance at 595 nm, as commonly used in the Bradford method, with the one achieved at 633 nm with a cheap commercially available diode laser. This protocol demonstrates the possibility to quantify proteins by using nL volumes, 1000 times less than the standard technique such as paper-analytical devices. Moreover, it shows a limit of quantification of at least 0.12 mg/mL, which is four times lower than the last literature, as well as a better accuracy (98%). The protein quantification is obtained either by using one single microfluidic droplet as well by performing statistical analysis over ensembles of several thousands of droplets in less than 1 min. The proposed methodology presents the further advantage that the protein solutions can be reused for other investigations and the same pertains to the opto-microfluidic platform
Thiol-ene hybrid organic-inorganic nanostructured coatings based on thiol-functionalised zirconium oxocluster
No full textVariations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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