Mehrwert durch Qualität in der wissenschaftlichen Weiterbildung

Der vorliegende Beitrag zeigt auf, welche Qualitätsdimensionen aus Hochschul- und Unternehmenssicht bei der Entwicklung und Etablierung berufsbegleitender Studienprogramme relevant sind. Ziel ist es, die Erwartungen von Hochschulen und Unternehmen bezüglich der Qualität von berufsbegleitenden Studiengängen zu systematisieren und den gegenseitigen Mehrwert aufzuzeigen, der bei der Berücksichtigung beider Anspruchshaltungen entsteht. Die Ebene der Studierenden wird nicht berücksichtigt, um die institutionelle Sicht auf Kooperationen zu ermöglichen. Methodisch basiert die vorliegende Untersuchung auf der Analyse verschiedener Qualitätskonzepte sowie qualitativen Befragungen, die an ausgewählten Hochschulen und Unternehmen durchgeführt wurden. Die Ergebnisse werden vorgestellt und auf Basis bestehender Qualitätskriterien in der wissenschaftlichen Weiterbildung diskutiert. (DIPF/Orig.

Experimental determination of the glass transition temperature in a very narrow temperature range by Temperature Modulated Optical Refractometry

Latest since the landmark studies of Kovacs and co-workers on the glass transition of polymers, it is clear that thermally induced volume changes are of central importance for the understanding of the nature of the glass transition. Due to the kinetic background of the canonical (thermal) glass transition, it does not seem possible to derive a well-defined glass transition temperature T_g based on susceptibilities such as the thermal volume expansion coefficient, \beta(T), being strongly coupled to the glass transition process. Therefore, in practice, T_g is for example defined via the inflection point of the step-like \beta(T) curve. In this publication, we propose to use a thermo-optical feature, preceding the glass transition in the high-temperature phase, to determine the glass transition temperature T_g of a model polymer in a rather narrow temperature interval.Comment: Preprin

Solving Partial Differential Equations with Monte Carlo / Random Walk on an Analog-Digital Hybrid Computer

Current digital computers are about to hit basic physical boundaries with respect to integration density, clock frequencies, and particularly energy consumption. This requires the application of new computing paradigms, such as quantum and analog computing in the near future. Although neither quantum nor analog computer are general purpose computers they will play an important role as co-processors to offload certain classes of compute intensive tasks from classic digital computers, thereby not only reducing run time but also and foremost power consumption. In this work, we describe a random walk approach to the solution of certain types of partial differential equations which is well suited for combinations of digital and analog computers (hybrid computers). The experiments were performed on an Analog Paradigm Model-1 analog computer attached to a digital computer by means of a hybrid interface. At the end we give some estimates of speedups and power consumption obtainable by using future analog computers on chip.Comment: 9 pages, 7 figures. Proceeding for the MikroSystemTechnik Kongress 2023 (VDE Verlag MST Kongress 2023

Erwartungen an Qualität in der Weiterbildung aus Hochschul- und Unternehmensperspektive: eine vergleichende Untersuchung

Der vorliegende Beitrag zeigt auf, welche Qualitätsstandards aus Hochschul- und Unternehmenssicht bei der Entwicklung und Etablierung erfolgreicher berufsbegleitender Studiengänge relevant sind. Ziel ist es, die Erwartungen von Hochschulen und Unternehmen bezüglich der Qualität von berufsbegleitenden Studiengängen zu erfassen. Die Ebene der Studierenden wird bewusst nicht in das Zentrum gestellt, um die institutionelle Sicht auf Kooperationen zu ermöglichen. Methodisch basiert die vorliegende Untersuchung auf Leitfadeninterviews, die mit ausgewählten Hochschulen und Unternehmen durchgeführt wurden. Die Ergebnisse der Interviews werden vorgestellt und auf Basis bestehender Qualitätskriterien in der wissenschaftlichen Weiterbildung diskutiert. Die ermittelten Erwartungen der Hochschulen und Unternehmen werden verglichen und darauf aufbauend Qualitätsstandards für weiterbildende Studiengängen formuliert

Untersuchungen zum Einfluß von Getreideblattläusen auf die Ertragsbildung bei Winterweizen.

In Kleinstparzellenversuchen zum Schadausmass von Macrosiphum avenae (Fabricius) bei Ährenbefall an Winterweizen liss sich die Ertragsbeeinflussung bei Abundanzmaxima von 40 Aphiden/Ähre zur Zeit der Milchreife und bei Blattlausindices von > 600 betrugen die Ausfälle mit hoher statistischer Wahrscheinlichkeit > 20%. ...Tests on very small plots to determine the damage caused by Macrosiphum avenae (Fabricius) attacing the ears of winter wheat showed that the yield was not significantly influenced by a maximum abundance of less than 30 aphids per inflorescence or by aphid indices (which are based on the density of population throughout the attack) of less than 400. Whith a maximum abundance of more than 40 aphids per ear in the milk stage or with aphid indices higher than 600 there was a hihgt statistical probability of losses gerater than 20 per cent. ..

Seismotectonic study of the Fergana region (Southern Kyrgyzstan): distribution and kinematics of local seismicity

We present new seismicity and focal-mechanism data for the Fergana basin and surrounding mountain belts in western Kyrgyzstan from a temporary local seismic network. A total of 210 crustal earthquakes with hypocentral depths shallower than 25 km were observed during a 12-month period in 2009/2010. The hypocenter distribution indicates a complex net of seismically active structures. The seismicity derived in this study is mainly concentrated at the edges of the Fergana basin, whereas the observed rate of seismicity within the basin is low. The seismicity at the dominant tectonic feature of the region, the Talas-Fergana fault, is likewise low, so the fault seems to be inactive or locked. To estimate the uncertainties of earthquake locations derived in this study, a strong explosion with known origin time and location is used as a ground truth calibration event which suggests a horizontal and vertical accuracy of about 1 km for our relocations. We derived 35 focal mechanisms using first motion polarities and retrieved a set of nine moment tensor solutions for earthquakes with moment magnitude (Mw) ranging from 3.3 to 4.9 by waveform inversion. The solutions reveal both thrust and strike-slip mechanisms compatible with a NW-SE direction of compression for the Fergana region. Two previously unknown tectonic structures in the Fergana region could be identified, both featuring strike-slip kinematics. The combined analysis of the results derived in this study allowed a detailed insight into the currently active tectonic structures and their kinematics where little information had previously been available

Green bionanocomposites based on polyhydroxybutyrate and filled with cellulose nanocrystals: melting processing and characterization

Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG[Abstract]: This article contributes to the understanding of biobased and biodegradable polyhydroxybutyrate (PHB) bionanocomposites melt processed by pre-industrial methods such as extrusion and injection molding and reinforced by weight contents of 1 and 3 wt% of cellulose nanocrystals (CNC) derived from waste streams of the paper industry. Ultrasonic treatment was used for dispersion of the CNC, which was followed by transmission electron microscopy. The thermal properties and the crystallization behavior of bionanocomposites were studied by thermogravimetric analysis, differential scanning analysis, X-ray diffraction and polarized optical microscopy. Investigations on the bending properties were carried out in conjunction with the analysis of their dynamic mechanical behavior. Scanning electron microscopy was used to characterize the fracture surface. All these analyses give a deep insight into their structure-property relationship. The moisture absorption measurements and gas barrier properties analysis made to the processed bionanocomposites have provided an insight into their behavior under environmental conditions. The PHB bionanocomposites with a low content of 1 wt% CNC were found to have the best dispersion quality, which had a positive effect on almost all mechanical and thermal properties. The increase in crystallinity with the incorporation of CNC also contributed to an improvement in mechanical properties. In ddition, the bionanocomposites show a slightly lower tendency to absorb moisture and better barrier properties to oxygen and water vapor. These findings showed that these bionanocomposites are suitable for use in the packaging industry.Xunta de Galicia. Consellería de Cultura, Educación, Formación Profesional e Universidades; : ED-431 C 2019/