95 research outputs found

    Ya Quds Academic Cultural News Letter, Issue No. 1

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    In this issue, we introduce CJS and its programmes. The newsletter also contains short articles and essays in English and Arabic written by academics, researchers, students, and others interested in the city and society of Jerusalem. We do not focus on a specific theme but have rather left it up to individual contributors to decide upon topics of interest to them under the general rubric of Jerusalem. We would like to thank the President of the University, Prof. Dr. Imad Abu Kishek, for his support and introductory words presenting the various institutions of Al- Quds University in Jerusalem. We would also like to thank Dr. Safa Nassereldin, Vice President for Jerusalem Affairs for her constant support, as well as the staff of CJS for their assistance in making this issue possible. Finally, we would like to take this opportunity to thank all of those who have contributed to this first issue of Ya Quds!. Despite the tense situation reigning today in the Old City of Jerusalem, we at CJS are committed to maintaining our presence there as an academic and cultural institution in Suq Al-Qattanin (the Cotton Market) in the Old City of Jerusalem, on the hope that Ya Quds! will become a forum for the many voices of the city. We hereby send out a call for articles for the second issue of Ya Quds!. Articles may be in Arabic or English, should not exceed 1200 words, and should be dedicated to a topic on Jerusalem. The deadline for submission is May 20, 2016. We look forward to your contributions. The newsletter is available online at: www.jerusalem-studies.alquds.ed

    Asymmetric Imides as Electrolyte Additive for Lithium‐Ion Batteries with NCM111 Cathode

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    The synthesis, spectroscopic and electrochemical characterization of Li[N(SiMe3)(SO2RF)] (RF=CF3, n‐C4F9) as well their behavior as electrolyte additive in lithium ion batteries (LIBs) is reported. The lithium salts were obtained by deprotonation of the corresponding acids HN(SiMe3)(SO2RF) with n‐butyllithium in n‐pentane. The electrochemical investigations suggested potential as additives for LIBs. Thus, NCM111/graphite cells (NCM111=Li[Ni0.33Co0.33Mn0.33]O2) with LP57 as electrolyte (LP57=1.0 M LiPF6 in EC/EMC 3 : 7) were built to test the performance. Cells with Li[N(SiMe3)(SO2RF)] as additives show coulombic efficiencies of over 99.6 %, less capacity fading over 55 cycles and a significantly lower cell impedance built up

    Ein Referenzmodell fĂŒr Gemeinschaften und Medien - Case Study Amazon. com

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    Zusammenfassung: 'Medienmodell und Medienreferenzmodell beschreiben Informationssysteme als SphĂ€ren fĂŒr Gemeinschaften von Agenten und MĂ€rkte. Das Medium stellt die Mittel fĂŒr das Management einer Gemeinschaft von Agenten bereit. Die Modelle werden mit einer Modellierungsmethode, die insbesondere das Management der Gemeinschaft durch die Medien berĂŒcksichtigt, ergĂ€nzt. Der Ansatz wird mit einer Studie von Amazon.com illustriert

    Decay widths of three-impurity states in the BMN correspondence

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    We extend the study of the quantum mechanics of BMN gauge theory to the sector of three scalar impurities at one loop and all genus. The relevant matrix elements of the non-planar one loop dilatation operator are computed in the gauge theory basis. After a similarity transform the BMN gauge theory prediction for the corresponding piece of the plane wave string Hamiltonian is derived and shown to agree with light-cone string field theory. In the three-impurity sector single string states are unstable for the decay into two-string states at leading order in g_2. The corresponding decay widths are computed.Comment: 30 pages, 3 figures. v2: references adde

    New aspects of the BMN correspondence beyond the planar limit

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    Motivated by recent disagreements in the context of AdS/CFT, we study the non-planar sector of the BMN correspondence. In particular, we reconsider the energy shift of states with two stringy excitations in light-cone string field theory and explicitly determine its complete perturbative contribution from the impurity-conserving channel. Surprisingly, our result neither agrees with earlier leading order computations, nor reproduces the gauge theory prediction. More than that, it features half-integer powers of the effective gauge coupling λâ€Č\lambda' representing a qualitative difference to gauge theory. Based on supersymmetry we argue that the above truncation is not suited for conclusive tests of the BMN duality.Comment: 20 pages, 1 figur

    Genome-Wide Studies of Histone Demethylation Catalysed by the Fission Yeast Homologues of Mammalian LSD1

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    In order to gain a more global view of the activity of histone demethylases, we report here genome-wide studies of the fission yeast SWIRM and polyamine oxidase (PAO) domain homologues of mammalian LSD1. Consistent with previous work we find that the two S. pombe proteins, which we name Swm1 and Swm2 (after SWIRM1 and SWIRM2), associate together in a complex. However, we find that this complex specifically demethylates lysine 9 in histone H3 (H3K9) and both up- and down-regulates expression of different groups of genes. Using chromatin-immunoprecipitation, to isolate fragments of chromatin containing either H3K4me2 or H3K9me2, and DNA microarray analysis (ChIP-chip), we have studied genome-wide changes in patterns of histone methylation, and their correlation with gene expression, upon deletion of the swm1+ gene. Using hyper-geometric probability comparisons we uncover genetic links between lysine-specific demethylases, the histone deacetylase Clr6, and the chromatin remodeller Hrp1. The data presented here demonstrate that in fission yeast the SWIRM/PAO domain proteins Swm1 and Swm2 are associated in complexes that can remove methyl groups from lysine 9 methylated histone H3. In vitro, we show that bacterially expressed Swm1 also possesses lysine 9 demethylase activity. In vivo, loss of Swm1 increases the global levels of both H3K9me2 and H3K4me2. A significant accumulation of H3K4me2 is observed at genes that are up-regulated in a swm1 deletion strain. In addition, H3K9me2 accumulates at some genes known to be direct Swm1/2 targets that are down-regulated in the swm1Âż strain. The in vivo data indicate that Swm1 acts in concert with the HDAC Clr6 and the chromatin remodeller Hrp1 to repress gene expression. In addition, our in vitro analyses suggest that the H3K9 demethylase activity requires an unidentified post-translational modification to allow it to act. Thus, our results highlight complex interactions between histone demethylase, deacetylase and chromatin remodelling activities in the regulation of gene expression

    Basale Kompetenzen vermitteln – Bildungschancen sichern. Perspektiven fĂŒr die Grundschule. Gutachten der StĂ€ndigen Wissenschaftlichen Kommission der Kultusministerkonferenz (SWK)

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    Die Ergebnisse des IQB-Bildungstrends (2021) zeigen, dass eine bedeutende Zahl an GrundschĂŒler:innen die Mindeststandards in Deutsch und Mathematik verfehlt (18-22 Prozent). Diesen Kindern fehlt die Voraussetzung fĂŒr erfolgreiches Weiterlernen und damit eine wichtige Grundlage fĂŒr gesellschaftliche und berufliche Teilhabe. Das Gutachten „Basale Kompetenzen vermitteln – Bildungschancen sichern. Perspektiven fĂŒr die Grundschule“ der StĂ€ndigen Wissenschaftlichen Kommission der Kultusministerkonferenz (SWK) gibt Handlungsempfehlungen hin zu einer systemischen VerĂ€nderung der Grundschule. Auf der Grundlage eines Kapitels zur Gestaltung frĂŒhkindlicher Bildungsprozesse werden Maßnahmen zur Förderung der basalen sprachlichen und mathematischen Kompetenzen in der Grundschule beschrieben und – korrespondierend – wird die Notwendigkeit der systematischen Implementation der Bildungsstandards begrĂŒndet. Daran schließen sich Kapitel zur Förderung sozial-emotionaler Kompetenzen, zur Entwicklung von Lern- und Bildungspartnerschaften mit Eltern und zur Zusammenarbeit multiprofessioneller Teams, zur Qualifizierung von LehrkrĂ€ften, zur Schulentwicklung sowie zur Reduktion und Kompensation von Segregationseffekten an. Die Handlungsempfehlungen lassen sich vier ĂŒbergeordneten strategischen Ansatzpunkten zuordnen: (1) Fokussierung der Zielperspektiven auf das Erreichen der Mindeststandards und Förderung dafĂŒr erforderlicher basaler Kompetenzen, (2) Fokussierung der Bildungs- und Unterrichtspraxis auf die Förderung basaler Kompetenzen und das Erreichen der Mindeststandards, (3) Qualifizierung des pĂ€dagogischen Personals fĂŒr die Diagnose und Förderung insbesondere basaler Kompetenzen und (4) Schaffung organisatorischer Voraussetzungen als Grundlagen fĂŒr das Erreichen der Mindeststandards. (DIPF/Orig.

    Entwicklung von Leitlinien fĂŒr das Monitoring und die Evaluation von Förderprogrammen im Bildungsbereich. Impulspapier der StĂ€ndigen Wissenschaftlichen Kommission der Kultusministerkonferenz (SWK)

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    Förderprogramme sind ein wichtiges Instrument, um politische Strategien umzusetzen. Im Bildungsbereich verfolgen sie hĂ€ufig das Ziel, den Bildungserfolg von Kindern und Jugendlichen zu steigern und soziale Ungleichheiten zu reduzieren. In Deutschland existieren zahlreiche Programme. Jedoch wird deren Wirkung hĂ€ufig kaum geprĂŒft. Die StĂ€ndige Wissenschaftliche Kommission der Kultusministerkonferenz (SWK) empfiehlt daher, Leitlinien fĂŒr das Monitoring und die Evaluation von Förderprogrammen im Bildungsbereich zu entwickeln. Das Impulspapiere skizziert die aus wissenschaftlicher Sicht wesentlichen Bestandteile und Anforderungen. (DIPF/Orig.
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