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Warum wir tun, was andere wollen: Psychologische Determinanten informeller Macht in Organisationen
(2012)
Transient up-regulation of P2 receptors influence differentiation of human mesenchymal stem cells
(2012)
The relative contributions of radial and laminar optic flow to the perception of linear self-motion
(2012)
When illusory self-motion is induced in a stationary observer by optic flow, the perceived distance traveled is generally overestimated relative to the distance of a remembered target (Redlick, Harris, & Jenkin, 2001): subjects feel they have gone further than the simulated distance and indicate that they have arrived at a target's previously seen location too early. In this article we assess how the radial and laminar components of translational optic flow contribute to the perceived distance traveled. Subjects monocularly viewed a target presented in a virtual hallway wallpapered with stripes that periodically changed color to prevent tracking. The target was then extinguished and the visible area of the hallway shrunk to an oval region 40° (h) × 24° (v). Subjects either continued to look centrally or shifted their gaze eccentrically, thus varying the relative amounts of radial and laminar flow visible. They were then presented with visual motion compatible with moving down the hallway toward the target and pressed a button when they perceived that they had reached the target's remembered position. Data were modeled by the output of a leaky spatial integrator (Lappe, Jenkin, & Harris, 2007). The sensory gain varied systematically with viewing eccentricity while the leak constant was independent of viewing eccentricity. Results were modeled as the linear sum of separate mechanisms sensitive to radial and laminar optic flow. Results are compatible with independent channels for processing the radial and laminar flow components of optic flow that add linearly to produce large but predictable errors in perceived distance traveled.
Software testing in web services environment faces different challenges in comparison with testing in traditional software environments. Regression testing activities are triggered based on software changes or evolutions. In web services, evolution is not a choice for service clients. They have always to use the current updated version of the software. In addition test execution or invocation is expensive in web services and hence providing algorithms to optimize test case generation and execution is vital. In this environment, we proposed several approach for test cases' selection in web services' regression testing. Testing in this new environment should evolve to be included part of the service contract. Service providers should provide data or usage sessions that can help service clients reduce testing expenses through optimizing the selected and executed test cases.
Sicherheit im Fährverkehr
(2012)
In this work, preceramic papers containing 85 wt% Al2O3 were heat-treated at 1600 °C to obtain paper-derived ceramics. In order to increase the preceramic paper density prior to sintering, the papers were calendered at different roll temperatures and pressures. The influences of the calendering parameters on the microstructure and mechanical properties of the preceramic papers and the paper-derived ceramics were investigated. It was expected that especially the mechanical properties of the papers and derived ceramics would be improved by calendering.
People with type 2 Diabetes have an elevated risk for developing cardiovascular disease (CVD) for which dyslipidemia is the major contributor. Diabetic patients have characteristic pattern of dyslipidemia with decreased level of high density lipoprotein cholesterol (HDL-C) and elevated triglycerides (TG) level. However, in diabetes mellitus, low density lipoprotein cholesterol (LDL-C) which is used as one of the markers for the risk of CVD, is underestimated so in such cases the levels of non-High density lipoprotein cholesterol (non-HDL-C) can be a stronger predictor of CVD as it strongly correlates with atherogenic lipoproteins. Therefore, an attempt has been made to evaluate the level of non-HDL-C as a newer marker for the risk of cardiovascular disease and to fi nd out the pattern of dyslipidemia in diabetes mellitus. The present study comprised of 82 type 2 Diabetic cases and 81 non-diabetic controls. Among the diabetics, the majority of the subjects (61.0%) were HDL-C dyslipidemic. However, among the controls, the maximum numbers of individuals (40.7%) were TG dyslipidemic. Diabetics have signifi cantly elevated ratio of total cholesterol to high density lipoprotein cholesterol (TC/HDL-C) and the signifi cant increased levels of non-high density lipoprotein cholesterol (non-HDL-C) compared to controls which can be used as markers of dyslipidemia and can also be used to predict the risk of cardiovascular disease in type 2 Diabetes Mellitus.
Open Source ERP-Systeme
(2012)
Mit Free and Open Source Software können die IT-Kosten in erheblichem Umfang gesenkt werden. Wegen ihres hohen Durchdringungsgrades in Unternehmen und des damit verbundenen Kostenblocks gilt dies insbesondere für Free and Open Source (FOS-) ERP-Systeme. Zwar sind die Verbreitung und die Akzeptanz von FOS-ERP-Systemen in den letzten Jahren schon stark angewachsen, durch eine verbesserte Markttransparenz lassen sich aber noch weitere Potenziale erschließen. Bestehende Marktübersichten für FOS-ERP-Systeme sind jedoch wenig umfassend. Vor diesem Hintergrund wurde ein Marktspiegel mit detaillierten Angaben zu den verschiedenen FOS-ERP-Systemen erstellt.
ERP systems are being used throughout the whole enterprise and are therefore responsible for a high percentage of IT expenses. The use of Free and Open Source ERP systems (FOS ERP systems) can help to reduce these IT costs. Though the acceptance of FOS ERP systems has increased enormously in the last years, even more entreprises would use FOS ERP systems to support their order processing, if the FOS ERP market was more transparent. Existing market surveys are less comprehensive. Therefore, a detailed market guide was developed.
Jede Führungskraft hat ein bestimmtes Menschenbild, das ihre Arbeit und den Umgang mit den Mitarbeitern prägt. Diese Menschenbilder sind auch einem historischen Wandel unterworfen. Denn im Lauf der Jahrzehnte haben sich unsere Vorstellungen vom Menschen als Mitarbeiter grundlegend gewandelt. Welche Konsequenzen dieser Wandel für die Mitarbeiterführung hat, untersucht der folgende Artikel.
Handlungsspielräume zur Gestaltung nachhaltiger Mobilität werden unzulänglich genutzt. Wissenschaftliche Erkenntnisse aus Gesundheit, Umwelt und Verkehr finden zögerlich Eingang in Verkehrspolitik. Konkurrenz der Ministerien für Wirtschaft, Verkehr, Umwelt und Gesundheit hindert an der Wahrnehmung der Wertschöpfung nachhaltiger Mobilität. Bemühungen um eine Entlastung der Innenstädte sind von effizienter Prävention weit entfernt, externe Kosten werden ignoriert. Biokraftstoffpflanzungen (mit Raubbau an Regenwäldern) erhöhen die Emissionen der industrialisierten Landwirtschaft und ruinieren Wasserressourcen. Diese Verschiebung in andere klimagasrelevante Produktionsbereiche verschlimmert die globalen CO2-Bilanzen. Wenige Einzelfälle sind verkehrs-ökologisch am Verursacherprinzip orientiert (z. B. in Österreich). Die WHO stellt Wissen bereit, unerwünschte Effekte vermeidbar zu machen. Über vermeidbare Gesundheitsfolgekosten (Atemwegserkrankungen, Übergewicht) liegt zwar genügend Material vor. Transdisziplinäre Betrachtungen der Wertschöpfung werden aber als nicht umsetzbar abqualifiziert.