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Dissertation
High temperature-stable InGaAs QDs for the monolithic integration in external-cavity surface-emitting lasers
(2021)
Optically pumped vertical external-cavity surface-emitting lasers (VECSELs), also called semiconductor disk lasers (SDLs), benefit from the flexibility and versatility of the semiconductor material. With a simple cavity layout, fundamental transverse mode operation with a circular output beam and high beam quality is possible. They have excellent heat-sink properties and only require inexpensive multimode diode lasers for pumping. The complete VECSEL structure is only a few micrometers thick which leads to a strong ...
Dissertation
Antecedents, Interpretations and Consequences of Strategic Change: A Business Model Perspective
(2020-10-15)
Firms increasingly face challenges caused by changes in their environment like shifts in custom-er preferences, the development of new (digital) technologies, or threats by new, disruptive business models (BM). Firm survival and achieving long-term success often require a firm’s reaction to these challenges. Therefore, firms mostly engage in and initiate strategic change like business model innovation (BMI), a dynamic process that alters strategies, structures, and iden-tities and involves various actors. Due to the ...
Aufsatz
Optimization of cassava dried noodle using hydrocolloid and protein isolates: a tropical noodle
(2020-11-29)
Cassava flour has the potential to be used as a substituent of flour in making dry noodles. This study aims to obtain the optimum formulation of flour, hydrocolloid content and protein isolate content. Formula optimization of cassava noodle has been done by using two types of cassava flour: native and pre-gelatinization, adding additional food additives such as hydrocolloid (xanthan gum and konjac glucomannan) and pea protein isolate. The design of the formulation and optimization is done by D-optimal combined design ...
Buch
Statik und Einflussfunktionen - vom modernen Standpunkt aus
(2021-03-01)
Den Anstoß zu dem Buch gab die Erkenntnis, dass die Methode der finiten Elemente ein Rechnen mit genäherten Einflussfunktionen ist. Ein klassisches Thema der Baustatik ist mit den finiten Elementen wieder auferstanden. Das war zunächst überraschend, aber es war dann Anlass die Grundlagen der Statik aus der Sicht der computational mechanics neu zu überdenken. Mit computational mechanics meinen wir die grundlegenden Strukturen der Gleichungen: Symmetrie, selbst-adjungiert, positiv definit, Lösungsbedingung, virtuelle ...
Video
MICROCOSMOS – Visión andina de los espacios prehispánicos
(2021-03-13)
MICROCOSMOS - Visión andina de los espacios prehispánicos
La miniaturización que reproduce la idea de un espacio monumental, poderoso o cósmico, forma parte de la mirada indígena andina, acostumbrada a reconocer principios mayores en elementos menores de la biodiversidad. Cada piso ecológico genera su universo biótico y cada organismo una red de micro elementos animados.
Las sociedades prehispánicas han depositado en sus artefactos miniaturizados, los conjuntos de nociones que derivan de esta particular mirada de ...
Working paper
Die Politisch-Administrative Elite der BRD unter Angela Merkel (2005-2018)
(2021)
Diese Randauszählung wurde im Rahmen des Forschungsprojektes „Neue Eliten – etabliertes Personal? (Dis-)Kontinuitäten deutscher Ministerien in Systemtransformationen“ am Fachgebiet Public Management der Universität Kassel erstellt. Die hier präsentierten Tabellen und Abbildungen fassen die Ergebnisse deskriptiver Auswertungen der im Forschungsprojekt erhobenen Daten zur Politisch-Administrativen Elite in der BRD unter Bundeskanzlerin Merkel (bis März 2018) zusammen und veranschaulichen die Häufigkeitsverteilungen ...
Aufsatz
On the Trail of Creativity: Dimensionality of Divergent Thinking and its Relation with Cognitive Abilities, Personality, and Insight
(2020-12-02)
Divergent thinking (DT) is an important constituent of creativity that captures aspects of fluency and originality. The literature lacks multivariate studies that report relationships between DT and its aspects with relevant covariates, such as cognitive abilities, personality traits (e.g. openness), and insight. In two multivariate studies (N = 152 and N = 298), we evaluate competing measurement models for a variety of DT tests and examine the relationship between DT and established cognitive abilities, personality ...
Aufsatz
Seasonal variation in mycoflora associated with asymptomatic maize grain from small-holder farms in two provinces of South Africa
(2020-11-27)
Seed quality plays an important role in the establishment of healthy crop stands. The aim of this study was to identify the mycoflora associated with maize grain collected over two growing seasons, one experiencing severe drought, from small-holder farms across KwaZulu-Natal (KZN) and the Eastern Cape (EC), two important provinces with maize producing small-holder farmers in South Africa. Asymptomatic maize ears were collected at harvest during two maize growing seasons from farms located in Hlanganani (KZN), ...
Aufsatz
A comparison of individual and group behavior in a competition with cheating opportunities
(2020)
While it is well established that individuals and groups make different economic decisions, the reasons for the behavioral differences are still not fully understood. We experimentally compare individual and group behavior in a competitive setting where cheating can be used to outperform the competitor. Our design allows us to exogenously control for the type of the decision maker, the type of the competitor, and whether the competitor is able to cheat or not. The results show that there is much more cheating in ...
Zeitschrift
Vol. 9 No. 5 (2021)
(Specialized Partnerships in Sustainable Food Systems and Food Sovereignty, Faculty of Organic Agricultural Sciences, the University of Kassel, Germany and the Federation of German Scientists (VDW), 2021-12-30)