bluuebunny/crossref_metadata_2025_split huggingface dataset:
Les différents visages de l’apprentissage
Authors: Kergoat Prisca 
Published: May 2013

Die verschiedenen Gesichter der Lehre -
Die Lehre erscheint als Analyselabor am Schnittpunkt zwischen Schule und Unternehmen, Erziehung und Arbeit. Sich Fragen zu stellen über die Funktionen dieser Ausbildung in den grossen Unternehmen, über die betroffenen Jugendbevölkerungen führt zu weiteren Fragen über die Entwicklung der Bedingungen des Zuganges zur Beschäftigung. Die Lehre erweist sich als ein guter Spiegel der Entwicklung der Ausbildung, der Beschäftigungspolitik der öffentlichen Hand, der Praktiken der grossen Unternehmen und der Art und Weise wie sie die Arbeitskräfte auswählen und die Arbeitsaufnahme verwalten.
Les "emplois-jeunes" : pour une autre lecture
Authors: Redjimi Goucem 
Published: May 2013

jeunes Die Arbeitsstellen für Jugendliche : für eine andere Auslegung. -
Die Überlegung über das Programm •Arbeitsstellen für Jugendliche” erzielt mehrere Ebenen... Im Prinzip sollte es "natürliche" (die Vereine) und "weniger natürliche" Akteure (die Jugendlichen) mobilisieren : aber wie sieht es wirklich aus ? Diese Massnahme stehtnicht im Zusammenhang mit Integration sondern beschäftigt sich mit den "Anstellbarsten" : was geschieht dann mit der Ausgrenzung deren Art und Weisen sich immer mehr verstärken und zwar durch die Ausdehnung der Auswahlverfahren auf neue Kategorien ? Abgesehen von dieser Massnahme steht heute die Demokratie in Frage als "Behauptung des Rechts" und darunter des "Rechts auf Integration" : muss man sie dann einer angeblich neuen Arbeitsbeziehung unterwerfen ? Dies würde die Ausgrenzungserscheinungen in Abwesenheit von sinnvollen Alternativen ausserhalb der "Teilnahme an der Arbeitsordnung" bestätigen.
Les activités sportives en milieu carcéral. Le cas des mineurs de la maison d’arrêt de Brest
Authors: Zanna Omar , Lacombe Philippe 
Published: May 2013

Puntos fuertes y debilidades de las pol’ticas de juventud.
Este articulo tiene como objetivo sacar a la luz las cualidades especialicas de las politicas locales y nacionales para la juventud, tanto del punto de vista de los recursos de la intervención pública como respeto a la estructuración de las puestas en obra. Intenta también poner en perspectiva este dominio de la intervención pública con el análisis de las politicas públicas. De esta forma intenta sobre todo destacar lo que constituye la caracteristica de las politicas para la juventud, a saber, la existencia de la permanencia, en el seno de los distintos dominios de la acción pública, de un campo de intervención pública, que sigue territorial, infrasectorial y transversal.
Intégration et délinquances : les avatars de la délégation chez les adolescents maghrébins
Authors: Guedah Mohamed 
Published: May 2013

Integración y delincuencias : los avatares de la delegación en los jóvenes magrebíes
La integración de los jóvenes magrebíes en una sociedad de acogida supone cierto grado de libertad y autonomía respecto a su origen cultural. Sin embargo estos jóvenes estarían sujetados por una larga correa de lealtad respecto a este origen, y por tanto surge no sólo un regreso espectacular hacia sus valores, sino sobre todo un enfrentamiento cada vez más claro con la ley del país de acogida. Tal enfrentamiento dejaría pensar que el origen cultural (Oumma) hubiera tomado en el imaginario de los adolescentes magrebies el relevo de la madre delegadora, protectora y captadora. Se asiste a un desplazamiento del conflicto conyugal hacia un conflicto intercultural y a la implantación de un mecanismo de delegación cultural.
"Entrer en couple" ou "sortir ensemble"
Authors: Maillochon Florence 
Published: May 2013

To make a couple or to date
How does the notion of couple come to young people ? At what time of their life or love relationships (first flirting, first sexual intercourse, etc) do young people consider they make a couple ? What are then the key features of the relationship they are committed to ? (in terms of length of time and visibility in their friendly and parental network) ? What types of partners are engaged in this relationship ?
Faire, défaire, refaire couple… une entreprise incertaine
Authors: Neyrand Gérard 
Published: May 2013

Hacer, deshacer, rehacer pareja : una empresa incierta
A los 15 años, la pareja heterosexual fiel y estable se erige en norma de referencia para la vida amorosa futura. A la edad adulta, si la norma común permanece, la experiencia amorosa y de la vida en pareja hace a uno más circunspecto : los jóvenes adultos son menos estrictos en cuanto a la fidelidad ; las parejas de distintas nacionalidades, los padres separados, los padres que recomponen… conocen la dificultad que puede resultar de querer mantener la pareja en su duración y hablan de obstáculos psicológicos, relacionales, familiares, institucionales, sociales que hay superar para mantener el lazo. Un enfoque de las representaciones a distintas edades y en distintas situaciones amorosas permite poner en evidencia tanto la fuerza del modelo de conyugalidad moderna como la dificultad de alcanzarlo.
Les emplois jeunes de la médiation sociale
Authors: Gadrey Nicole , Pélage Agnès , Roquet Pascal , Verley Élise 
Published: May 2013

Los empleos jóvenes de la mediación social.
A partir de una encuesta llevada a cabo en 3 departamentos del norte, sureste y suroeste de Francia, los autores se interrogan sobre los efectos de la creación de los empleos jóvenes de la mediación social. Aparece así que la creación de los mediadores y de sus empleos desemboca menos en la consolidación de oficios que en la emergencia de una nueva forma de transición profesional.
Crise urbaine et citoyenneté
Authors: Perrineau Pascal , Rey Henri 
Published: May 2013

Crisis urbana y ciudadanía
Colectivo bajo la dirección de Pascal Perrineau y Henri Rey, CEVIPOF
Este artículo presenta una síntesis acerca de la relación de los jóvenes de los barrios llamados «sensibles» con la política. Esta síntesis se apoya en unos estudios coordinados por el CEVIPOF para el Centro de Estudios y de Previsión del Ministerio del Interior.
Geographic distribution and taxonomic circumscription of populations within Coryphantha section Robustispina (Cactaceae)
Authors: Baker Marc A. , Butterworth Charles A. 
Published: May 2013

• Premise of study: Taxonomic circumscription of subspecific taxa within Coryphantha robustispina was evaluated with morphological data and microsatellites. This study was the first to compare adequately sampled morphological and DNA analyses at the population level in the Cactaceae. This comparison was important to test reliability of both methods and to gain a better understanding of phytogeography, evolution, and systematics of the species, knowledge that could prove useful for other taxa as well. Populations of C. robustispina subsp. robustispina are listed as endangered by the U. S. Fish and Wildlife Service. Our primary goal was to explore correlations among geographical distribution, morphology, and genetics of selected populations throughout the range of the species and the outgroup, C. poselgeriana.• Methods: Stem characters were measured for 638 individuals among 16 populations. Flower characters were measured for 180 individuals among 12 populations. Ten microsatellite DNA loci were isolated and characterized for 204 individuals among 13 populations. Data were analyzed using various multivariate analyses.• Results: Our results indicated that, within Coryphantha robustispina, there were three morphologically, genetically, and geographically coherent groups represented by the names C. robustispina subsp. robustispina, C. robustispina subsp. uncinata, and C. robustispina subsp. scheeri. For most analyses, distinctions among the three groups were primarily not as great as those between any one of them and the outgroup.• Conclusions: Results suggested that the three subspecific taxa within Coryphantha robustispina are good subspecies but should not be elevated to species rank. The closely aligned results between morphology and microsatellite data support the design and utility of both methods.
La Grande Guerre et la déchéance du Père
Authors: Dingeon Caroline , Condamin Christine , Spoljar Philippe 
Published: May 2013

Les activités d’« historiens amateurs », suscitées, depuis quelques années, par le souvenir de la première guerre mondiale (recherches généalogiques, exhumations, identifications des lieux et des corps...), semblent concourir à une tentative de restauration de liens de filiation. Ce nouvel intérêt pose la question des effets de la Grande Guerre sur l’ordre généalogique. Particulièrement violent, ce conflit a provoqué de terribles blessures physiques et psychiques, rendant difficile le retour des hommes à la vie civile. Les rôles des hommes et des femmes ont été redistribués, et la fonction des pères auprès des enfants, habitués à vivre sans eux, a dû être redéfinie. Ces transformations subjectives et sociétales ont, ainsi, déstabilisé l’organisation et l’intimité des familles et bouleversé le statut du père, dans ses dimensions concrète, psychique et généalogique.
La SCOP, d'un idéal social à un modèle entrepreneurial
Authors: Bertrel Marina 
Published: May 2013

Alors que le contexte de crise laisse sceptiques les repreneurs d’entreprises et frileux les créateurs potentiels, la communauté internationale a décidé de mettre en avant, pour l’année 2012, le modèle coopératif qui sera très certainement, d’après les analystes, une alternative dans les années à venir pour les entrepreneurs, qu’il s’agisse de créer ou de reprendre une société. Cet article propose une analyse juridique – historique et prospective – de la forme coopérative et participative la plus utilisée en France : la « Société coopérative et participative » (anciennement appelée « Société Coopérative Ouvrière de Production » et ci-après désignée « SCOP ») méconnue du grand public et présentant pourtant, dans un climat de crise financière, économique et sociale, des atouts incontestables pour les porteurs de projet.
An Evaluation Model of Digital Educational Resources
Authors: El Mhouti Abderrahim , Erradi Mohamed , Nasseh Azeddine 
Published: May 2013

Abstractâ??Today, the use of digital educational resources in teaching and learning is considerably expanding. Such expansion calls educators and computer scientists to reflect more on the design of such products. However, this reflection exposes a number of criteria and recommendations that can guide and direct any teaching tool design be it campus-based or online (e-learning).
Our work is at the heart of this issue. We suggest, through this article, examining academic, pedagogical, didactic and technical criteria to conduct this study which aims to evaluate the quality of digital educational resources.
Our approach consists in addressing the specific and relevant factors of each evaluation criterion. We will then explain the detailed structure of the evaluation instrument used : â??evaluation gridâ?. Finally, we show the evaluation outcomes based on the conceived grid and then we establish an analytical evaluation of the state of the art of digital educational resources.
Chromatin Architecture, CCCTC-Binding Factor, and V(D)J Recombination: Managing Long-Distance Relationships at Antigen Receptor Loci
Authors: Shih Han-Yu , Krangel Michael S. 
Published: May 2013

Abstract
The rearrangement of T and B lymphocyte Ag receptor loci occurs within a highly complex chromosomal environment and is orchestrated through complex mechanisms. During the past decade, a large body of literature has highlighted the significance of chromatin architecture at Ag receptor loci in supporting the genomic assembly process: in preparation for recombination, these loci tend to contract and form multiple loops that shorten the distances between gene segments and facilitate recombination events. CCCTC-binding factor, CTCF, has received much attention in this regard since it has emerged as an important regulator of chromatin organization and transcription. In this review, we summarize recent work outlining conformational dynamics at Ag receptor loci during lymphocyte development and we discuss the role of CTCF in Ag receptor locus conformation and repertoire development.
Carrier Selection:
Authors: Williams, Zachary , Garver, Michael S. , Taylor, G. Stephen 
Published: May 2013

AbstractThere is a substantial body of research devoted to the processes shippers use in selecting motor carriers. Using data collected from 222 less-than-truckload (LTL) shippers, the current study attempts to further extend knowledge in this area in three ways by (1) examining additional carrier selection variables that heretofore have not been investigated, (2) employing a research method that has not been used in previous studies, and (3) conducting segmentation analyses of LTL shippers in their selection of motor carriers. In addition, this study identified five distinct need-based segments of LTL shippers that assigned differential importance to the variables considered in the selection process. The authors also describe the basic demographic characteristics of each segment. Recommendations for managerial actions and future research on carrier selection are provided.
Simple output feedback adaptive control based on passification principle
Authors: Bobtsov A.A. , Pyrkin A.A. , Kolyubin S.A. 
Published: May 2013

SUMMARYThis paper deals with the output stabilization of time‐delay systems with sector‐bounded nonlinearity and disturbance. In this paper, we will consider the problem of absolute stability for a time‐delay systems class, which can be represented as a feedback connection of a linear dynamical system with unknown parameters and an uncertain nonlinearity satisfying a sector constraint. Control algorithm providing exponential stability of equilibrium position without disturbance and L ∞ ‐stability for disturbed systems is proposed for a class of output. Obtained results are validated with the aid of computer simulation of the two‐stage chemical reactor control. Copyright © 2013 John Wiley & Sons, Ltd.
Synthesis and Evaluation of Carboxy‐Terminated Poly(trimethylene propane trifumarate)–Poly(ethylene glycol) as a Biodegradable Mucoadhesive Resin
Authors: Jency P. J. , Thomas Vinoy , Jayabalan M. 
Published: May 2013

AbstractCarboxy‐terminated poly(trimethylene propane trifumarate) (CT‐TPF) oligomers were prepared as a mucoadhesive resin using different process variables. The process variables influence the condensation and molecular size and reactivity of the resin leading to different resins with variation in reactivity and molecular size. Four oligomers were prepared by refluxing at different temperatures, TPF1 (refluxing at 70–80°C for 15 min), TPF2 (refluxing at 80–100°C for 60 min), TPF3 (refluxing at 120–140°C for 15 min), and TPF4 (refluxing at 120–140°C for 30 min). A process parameter with refluxing at 120–140°C for 30 min resulted in a higher molecular weight fast setting resin, TPF4 (Mn2700,Mw2920 and polydispersity 1.08). Hydrogel adhesives were prepared using TPF4 resin, poly(ethylene glycol) dimethacrylate (PEGDMA,Mn750), andn‐vinyl pyrrolidone. TPF4 undergoes setting with setting time 8 ± 0.55 min with PEGDMA andn‐vinyl pyrrolidone. The present hydrogel adhesive has higher shear holding time, 105 ± 3 s and peel strength 13 ± 0.002 kg/m at the speed of 0.022 m/s. The aging of the cured adhesive in the simulated biological fluids reveals gradual degradation due to the cross‐linked nature of the cured adhesive. The cured hydrogel adhesive is cytocompatible with L929 fibroblast cells. © 2013 Wiley Periodicals, Inc. Adv Polym Technol 2013, 32, 20200; View this article online atwileyonlinelibrary.com. DOI 10.1002/adv.20200
Blood‐based gene‐expression predictors of PTSD risk and resilience among deployed marines: A pilot study
Authors: Glatt Stephen J. , Tylee Daniel S. , Chandler Sharon D. , Pazol Joel , Nievergelt Caroline M. , Woelk Christopher H. , Baker Dewleen G. , Lohr James B. , Kremen William S. , Litz Brett T. , Tsuang Ming T. ,   Marine Resiliency Study Investigators
Published: May 2013

AbstractSusceptibility to PTSD is determined by both genes and environment. Similarly, gene‐expression levels in peripheral blood are influenced by both genes and environment, and expression levels of many genes show good correspondence between peripheral blood and brain. Therefore, our objectives were to test the following hypotheses: (1) pre‐trauma expression levels of a gene subset (particularly immune‐system genes) in peripheral blood would differ between trauma‐exposed Marines who later developed PTSD and those who did not; (2) a predictive biomarker panel of the eventual emergence of PTSD among high‐risk individuals could be developed based on gene expression in readily assessable peripheral blood cells; and (3) a predictive panel based on expression of individual exons would surpass the accuracy of a model based on expression of full‐length gene transcripts. Gene‐expression levels were assayed in peripheral blood samples from 50 U.S. Marines (25 eventual PTSD cases and 25 non‐PTSD comparison subjects) prior to their deployment overseas to war‐zones in Iraq or Afghanistan. The panel of biomarkers dysregulated in peripheral blood cells of eventual PTSD cases prior to deployment was significantly enriched for immune genes, achieved 70% prediction accuracy in an independent sample based on the expression of 23 full‐length transcripts, and attained 80% accuracy in an independent sample based on the expression of one exon from each of five genes. If the observed profiles of pre‐deployment mRNA‐expression in eventual PTSD cases can be further refined and replicated, they could suggest avenues for early intervention and prevention among individuals at high risk for trauma exposure. © 2013 Wiley Periodicals, Inc. © 2013 Wiley Periodicals, Inc.
Novel phenyl‐POSS/polyurethane aqueous dispersions and their hybrid coatings
Authors: Hu Jiankun , Li Lian , Zhang Siwei , Gong Linbo , Gong Shuling 
Published: May 2013

ABSTRACTA facile and rapid preparation of 3‐(2‐aminoethylamino)propylheptaphenylPOSS (AA‐POSS), a special phenyl‐POSS that contains two functional amino groups (Scheme 1), is demonstrated by the corner‐capping method. Then AA‐POSS forms a series of novel phenyl‐POSS/PU aqueous dispersions. The structure of AA‐POSS has been confirmed by 1H, 13C, 29Si NMR, and ESI‐MS. The POSS/PU hybrid films are studied by Fourier transform infrared spectrometer (FT‐IR), gel permeation chromatography (GPC), scanning electron microscope (SEM), X‐ray diffraction (XRD) spectra, differential scanning calorimetry (DSC) analysis, and thermal gravimetric analyzer (TGA). FT‐IR and GPC are conducted to validate the chemical structure of the hybrid PU. The properties of hybrid films display significant changes with notable increases in Tg, thermal properties, tensile strength, as well as surface hydrophobicity. These changes are attributed to the incorporation of novel POSS into PU. Moreover, these significant material property enhancements are achieved at low levels of POSS incorporation (only 4%). © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1611–1620, 2013
Microwave irradiated synthesis of grafted cationic starch: Synthesis, characterization, application, and biodegradation
Authors: Zhang Hao , Wang Jian‐kun , Wang Rui , Dong Yong‐chun 
Published: May 2013

ABSTRACTA biodegradable copolymer was synthesized by grafting copolymerization of acrylamide, β‐hydroxyethyl methacrylate, and n‐butyl acrylate onto corn cationic starch (CS) by microwave irradiation. The grafted cationic starch (GCS) was characterized by Fourier‐transform infrared spectroscopy, scanning electron microscopy, and X‐ray diffraction. The optimum conditions on graft copolymerization with respect to reaction temperature, exposure time, and initiator concentration were investigated. Physicochemical properties of GCS, such as swelling power, solubility, intrinsic viscosity, and apparent viscosity, were studied, and its application performances as textile sizing agent were tested. Results showed that compared with CS, physicochemical properties of GCS were significantly improved, including decreased crystallinity, weakened granular, increased hydration capacity, and rheological property. Polyester/cotton blended yarns sized with GCS obtained more reinforced mechanical properties than samples sized with CS and exhibited higher tensile strength and abrasion resistance than polyvinyl alcohol (PVA) sized yarns. The mechanisms that the starch physicochemical properties affected on the sizing performances were discussed as well. Biodegradation analysis on these sizing agents showed that BOD5/CODcr of GCS was 0.263, which outclasses that of PVA (BOD5/CODcr = 0.009). This novel biomaterial could be expected to have promising applications especially in textile industry and be an ideal substitute for PVA. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1645–1652, 2013
Effect of solid‐state stress induced reaction on morphology and structure of metallocene polyethylene
Authors: Zou Huawei , Chen Yang , Liang Mei , Liu Pengbo 
Published: May 2013

ABSTRACTMetallocene‐catalyzed polyethylene (mPE) powder was prepared through a mechanochemical reactor in solid state at ambient temperature. The changes of morphology and structure of mPE were investigated by SEM, FTIR, DSC, viscosimetry, GPC, WAXD, dynamic rheometer, and high pressure capillary rheometer methods. FTIR measurement illustrated that the branching degree of mPE increased after mechanochemical reaction. Combined with the dynamic rheological analysis, it was proved that the rupture and combination of macromolecular chain undergo strong shear resulted in the formation of long chain branches. X‐ray diffraction analysis showed that the crystal form of mPE transferred from rhombic to monoclinic system partly, and the crystalline degree increased slightly in the initial mechanochemical reaction period. Viscometer test results exhibited that molecular weight of mPE dropped during the mechanochemical treatment. Rheology measurement indicated that the critical shear rate of the shark‐skin failure enhanced and the extruded stands exhibited smooth face for the mPE after mechanochemical treatment. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1691–1699, 2013
Synthesis and Pharmacological Evaluation of Some Novel Thebaine Derivatives: N‐(Tetrazol‐1H‐5‐yl)‐6,14‐endoethenotetrahydrothebaine Incorporating the 1,3,4‐Oxadiazole or the 1,3,4‐Thiadiazole Moiety
Authors: Yavuz Serkan , Ünal Yusuf , Pamir Özgür , Yılmazer Demet , Kurtipek Ömer , Kavutçu Mustafa , Arslan Mustafa , Ark Mustafa , Yıldırır Yılmaz 
Published: May 2013

AbstractIn this study, we synthesized some novel N‐(tetrazol‐1H‐5‐yl)‐6,14‐endoethenotetrahydrothebaine 7α‐substituted 1,3,4‐oxadiazole and 1,3,4‐thiadiazole derivatives as potential analgesic agents. The structures of the compounds were established on the basis of their IR, 1H NMR, 13C NMR, 2D NMR, and high‐resolution mass spectral data. The analgesic activity was evaluated by a rat‐hot plate test model and a rat tail‐flick model. Compound 12 showed analgesic activity higher than that of morphine. In addition to a histopathological and biochemical evaluation, the LD50 dose for the most active compound 12 was determined.