152 research outputs found

    Ein Rahmenwerk für kooperativen Informationsaustausch

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    In der Region Aachen wollen eine Reihe von Softwareherstellem durch Austausch von Softwarekomponenten und durch Austausch von Erfahrungen beim Einsatz von kommerziellen Softwarekomponenten kooperieren. In Zusammenarbeit mit diesen Partnern aus dem Regionalen Industrieclub Informatik Aachen wurde daher ein Intemet-basiertes Informationssystem für kooperative Softwarewiederverwendung entwickelt, das wir in diesem Beitrag vorstellen. Wir gehen auf die Aspekte der Kooperation, den Klassifikationsansatz und das zugrundeliegende SYNERGIERahmenwerk ein und erläutern, warum mit diesem Rahmenwerk auch andere Informationssysteme zur Unterstützung untemehmensübergreifender Kooperation entwickelt werden können

    Correlative Microscopy of Morphology and Luminescence of Cu porphyrin aggregates

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    Transfer of energy and information through molecule aggregates requires as one important building block anisotropic, cable-like structures. Knowledge on the spatial correlation of luminescence and morphology represents a prerequisite in the understanding of internal processes and will be important for architecting suitable landscapes. In this context we study the morphology, fluorescence and phosphorescence of molecule aggregate structures on surfaces in a spatially correlative way. We consider as two morphologies, lengthy strands and isotropic islands. It turns out that phosphorescence is quite strong compared to fluorescence and the spatial variation of the observed intensities is largely in line with the amount of dye. However in proportion, the strands exhibit more fluorescence than the isotropic islands suggesting weaker non-radiative channels. The ratio fluorescence to phosphorescence appears to be correlated with the degree of aggregation or internal order. The heights at which luminescence saturates is explained in the context of attenuation and emission multireflection, inside the dye. This is supported by correlative photoemission electron microscopy which is more sensitive to the surface region. The lengthy structures exhibit a pronounced polarization dependence of the luminescence with a relative dichroism up to about 60%, revealing substantial perpendicular orientation preference of the molecules with respect to the substrate and parallel with respect to the strands

    Julie Williams crowned Miss OBU 2019

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    Ouachita Baptist University hosted the 51st annual Miss Ouachita Baptist University Pageant on Saturday, Feb. 2, and crowned Arkadelphia, Ark., native Julie Williams as Miss OBU 2019

    The Grizzly, February 25, 1983

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    USGA Plans Communication Revision • Foley, D\u27Alesio First Place Winners at Talent Show • College Union Holds Tenth Anniversary • Ritter Production Opens: Skin of Our Teeth • Mass is Popular: Newman Society Links U.C. • Small Heads Alcohol Committee • SPC Seeks Editors • Union Calendar • Grizzly Looks For New Business Manager • Winterfest 1983: International Desserts Festival Tonight • Winterfest Schedule • Letters to the Editor: Admissions Dean Corrects Errors; Hoop Club President Responds; Student Reacts Negatively • Social Life at Ursinus Should be Improved • In the Gates • Registrar Announces Pre-Registration • President\u27s Corner • Roving Reporter: Do You Think the New Alcohol Policy Proposed by the Administration was the Correct Way to Handle the Situations That Occurred on Campus? • Bears Drown Monarchs • Women\u27s Swimming Ends 10-1 • MAC Competition: Wrestlers Take Seventh • Gymnasts Move up a Rank • Lady Hoopsters Finish With Victoryhttps://digitalcommons.ursinus.edu/grizzlynews/1095/thumbnail.jp

    Social justice in a market order: graduate employment and social mobility in the UK

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    Framed within a Gramscian analytical perspective, this article contrasts the ‘transparent neoliberalism’ of one of its leading organic intellectuals, Friederich Hayek, with one of the key discourses of ‘euphemized neoliberalism’ in the UK: higher education’s promise of social justice through social mobility. The article discusses the disjunctions between ideology and discourse but also between discourse and the reality of class-based unequal graduate employment outcomes in the UK. I then consider some recent policy proposals to redress such inequalities and scrutinize these in the light of Hayek’s views on social justice within a market economy. In the final section, I return to Gramsci to re-evaluate the continuing relevance of the concept of organic intellectuals in the light of debates around the shifting position of intellectuals within contemporary society

    Effect of Co-60 gamma-ray irradiation on electrical properties of Ti/Au/GaAs1-xNx Schottky diodes

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    Current-voltage (I-V), capacitance-voltage-frequency (C-V-f) and conductance-voltage-frequency (G/ω-V-f) measurements at room temperature are used to study 50 kGy 60Co γ-ray electrical properties irradiation dependence of Ti/Au/GaAs1−xNx Schottky diodes with 0.2%; 0.4%; 0.8% and 1.2% nitrogen dilution. This γ-ray irradiation induces a permanent damage that has increased ideality factor and series resistance for all samples. It was accompanied by a decrease in Schottky barrier height with nitrogen content up to 0.4%N and remained constant thereafter. Radiation was also found to degrade the reverse leakage current. At high frequency (1 MHz), capacitance and conductance decreased after radiation due to a decrease in net doping concentration. Interface state density and series resistance were determined from C-V-f and G/ω-V-f characteristics using Hill-Coleman methods. Interface states density exponentially decreased with increasing frequency confirming the behavior of interface traps response to ac signal. Series resistance increases after irradiation is attributed to carrier's removal effect and mobility degradation. It has two peaks in the accumulation and inversion region for some diodes (0.4%N, 0.8%N). γ-ray irradiation produced traps levels and recombination centers that reduce relaxation time. An increase in %N content can impede irradiation damage with even some compensation when the percent of diluted nitrogen is high (1.2%N)

    Doing synthetic biology with photosynthetic microorganisms

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    The use of photosynthetic microbes as synthetic biology hosts for the sustainable production of commodity chemicals and even fuels has received increasing attention over the last decade. The number of studies published, tools implemented, and resources made available for microalgae have increased beyond expectations during the last few years. However, the tools available for genetic engineering in these organisms still lag those available for the more commonly used heterotrophic host organisms. In this mini-review, we provide an overview of the photosynthetic microbes most commonly used in synthetic biology studies, namely cyanobacteria, chlorophytes, eustigmatophytes and diatoms. We provide basic information on the techniques and tools available for each model group of organisms, we outline the state-of-the-art, and we list the synthetic biology tools that have been successfully used. We specifically focus on the latest CRISPR developments, as we believe that precision editing and advanced genetic engineering tools will be pivotal to the advancement of the field. Finally, we discuss the relative strengths and weaknesses of each group of organisms and examine the challenges that need to be overcome to achieve their synthetic biology potential.Peer reviewe
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