Faces in the mirror: Exploring conflict styles of adults in school communities using the face -negotiation theory

This correlation study focused on the lack of understanding of the relationship between social self-image face and conflict styles among adult employees on school campuses. An individual\u27s social self-image may involve concerns for the social representation of oneself, another individual, or a relationship. Limited research pertaining to the degree face concerns affect conflict styles within school communities is a problem for school administrators because conflict styles can influence conflict outcomes and impact workplace quality on school campuses. This study relied on Ting-Toomey\u27s face-negotiation theory, which proposes that individuals prefer conflict styles based upon face concerns. Research questions explored correlations between self-face, other-face, and mutual-face concerns with dominating, emotional expressive, neglect, integrating, obliging, compromising, third-party help, and avoiding conflict styles. The sample consisted of 192 adults employed on 3 school campuses located in a large metropolitan region in the western region of the United States. Participants completed a survey by recalling a conflict with an adult coworker. Participants responded to items measuring social self-image and behavioral responses to conflict. Results were analyzed using multiple regression tests. Findings suggest that preferences for conflict styles were very different in the presence of self-face than in the presence of other-face and mutual-face, and face-concerns were either weak predictors or nonpredictors for avoiding and third-party help. This study has the potential to enhance workplace quality on school campuses in that it suggests mutual-face concerns for relationships associate with cooperative conflict styles that tend to promote constructive conflict outcomes

Offener Unterricht vs. Lehrerzentrierter Unterricht – Methodenvergleich anhand von tatsächlichem Lernzuwachs und Schülerreflexion

Gruppenarbeit, Lerntheke oder doch ein Lehrer-Schüler-Gespräch? Ziel dabei ist immer der Lernzuwachs bei den Schülern. Die hier vorgestellte Zulassungsarbeit thematisiert die Erreichung dieses Ziels in Abhängigkeit von der jeweils gewählten Methode im speziellen Fall der Prüfungsvorbereitung auf den Teil A der Mathematikprüfung des Qualifizierenden Hauptschulabschlusses in Bayern. Ein Vergleich zwischen zwei Klassen, die eine lehrerzentrierte bzw. eine offene Sequenz durchliefen, soll Aufschluss über die Wirkung der Methoden geben. Im Folgenden stellen wir die Hintergründe, die Vorbereitung, die Durchführung und die Ergebnisse mit ihrer Interpretation dar

Die heimische Pflanzenwelt bereichert Grünanlagen : kostbare und verdrängte Blumen

Bei der Erhebung der Wildpflanzen im Gebiet des Burghölzli-Hügels wurden überraschend viele spezielle und seltene Arten festgestellt. Es lohnt sich hier besonders, jedes Stück unversiegelter Fläche zu erhalten und naturfreundlich zu bewirtschaften – und es ausserdem vor der grossen Zahl aufkommender Neophyten zu schützen

The tax-inducible actin-bundling protein fascin is crucial for release and cell-to-cell transmission of human T-cell leukemia virus type 1 (HTLV-1)

The delta-retrovirus Human T-cell leukemia virus type 1 (HTLV-1) preferentially infects CD4(+) T-cells via cell-to-cell transmission. Viruses are transmitted by polarized budding and by transfer of viral biofilms at the virological synapse (VS). Formation of the VS requires the viral Tax protein and polarization of the host cytoskeleton, however, molecular mechanisms of HTLV-1 cell-to-cell transmission remain incompletely understood. Recently, we could show Tax-dependent upregulation of the actin-bundling protein Fascin (FSCN-1) in HTLV-1-infected T-cells. Here, we report that Fascin contributes to HTLV-1 transmission. Using single-cycle replication-dependent HTLV-1 reporter vectors, we found that repression of endogenous Fascin by short hairpin RNAs and by Fascin-specific nanobodies impaired gag p19 release and cell-to-cell transmission in 293T cells. In Jurkat T-cells, Tax-induced Fascin expression enhanced virus release and Fascin-dependently augmented cell-to-cell transmission to Raji/CD4(+) B-cells. Repression of Fascin in HTLV-1-infected T-cells diminished virus release and gag p19 transfer to co-cultured T-cells. Spotting the mechanism, flow cytometry and automatic image analysis showed that Tax-induced T-cell conjugate formation occurred Fascin-independently. However, adhesion of HTLV-1-infected MT-2 cells in co-culture with Jurkat T-cells was reduced upon knockdown of Fascin, suggesting that Fascin contributes to dissemination of infected T-cells. Imaging of chronically infected MS9 T-cells in co-culture with Jurkat T-cells revealed that Fascin's localization at tight cell-cell contacts is accompanied by gag polarization suggesting that Fascin directly affects the distribution of gag to budding sites, and therefore, indirectly viral transmission. In detail, we found gag clusters that are interspersed with Fascin clusters, suggesting that Fascin makes room for gag in viral biofilms. Moreover, we observed short, Fascin-containing membrane extensions surrounding gag clusters and clutching uninfected T-cells. Finally, we detected Fascin and gag in long-distance cellular protrusions. Taken together, we show for the first time that HTLV-1 usurps the host cell factor Fascin to foster virus release and cell-to-cell transmission

Actes de la conférence BDA 2014 : Gestion de données - principes, technologies et applications

International audienceActes de la conférence BDA 2014 Conférence soutenue par l'Université Joseph Fourier, Grenoble INP, le CNRS et le laboratoire LIG. Site de la conférence : http://bda2014.imag.fr Actes en ligne : https://hal.inria.fr/BDA201

Photocatalytic hydrogen production using polymeric carbon nitride with a hydrogenase and a bioinspired synthetic Ni catalyst.

Solar-light-driven H2 production in water with a [NiFeSe]-hydrogenase (H2ase) and a bioinspired synthetic nickel catalyst (NiP) in combination with a heptazine carbon nitride polymer, melon (CN(x)), is reported. The semibiological and purely synthetic systems show catalytic activity during solar light irradiation with turnover numbers (TONs) of more than 50,000 mol H2(mol H2ase)(-1) and approximately 155 mol H2 (mol NiP)(-1) in redox-mediator-free aqueous solution at pH 6 and 4.5, respectively. Both systems maintained a reduced photoactivity under UV-free solar light irradiation (λ>420 nm).This is the final version. It was first published in Angewandte Chemie International Edition at http://onlinelibrary.wiley.com/doi/10.1002/anie.201406811/abstract

Mating still disrupted: Future elevated CO2 concentrations are likely to not interfere with Lobesia botrana and Eupoecilia ambiguella mating disruption in vineyards in the near future

The successful, area-wide application of the mating disruption (MD) technique, an insect sex pheromone-based biotechnological pest control method, against the European grapevine moth Lobesia botrana and the European grape berry moth Eupoecilia ambiguella, has led to drastic reductions in insecticide application in vineyards. However, since insect pheromone perception and emission can be affected by abiotic conditions, the future success of MD may be affected by climate change. At the same time, politics and society are calling for drastic and sustainable reductions in pesticide application, making highly specific, efficient, and environmentally friendly pest control techniques like MD more important than ever. To anticipate whether climate change factors will interfere with the MD of L. botrana and E. ambiguella in vineyards, we conducted field experiments in the Geisenheim VineyardFACE (Free-Air Carbon dioxide Enrichment) facility. The insects were raised at ambient or elevated temperatures in the lab and male moths were released in cages installed in the VineyardFACE facility. Trap recapture rates obtained by pheromone lures or female moths under elevated or ambient CO2 in areas with and without MD were evaluated. Our results did not indicate a reduced efficacy of L. botrana or E. ambiguella MD at elevated CO2 concentrations, irrespective of the temperature the moths were raised under. From a practical point of view-and especially from an ecological one-our results are good news. They indicate that MD will not be negatively affected by future elevated CO2 concentrations