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Now showing items 11-20 of 229
Dissertation
Zusammenhang der Nutzungshäufigkeit mit der Wirksamkeit eines angeleiteten Online-Selbsthilfeprogramms bei depressiven Patienten
(2022)
Zusammenhang der Nutzungshäufigkeit mit der Wirksamkeit eines angeleiteten Online-Selbsthilfeprogramms bei depressiven Patienten:
Die Deprexis-Studie, die Basis meiner Arbeit ist, hat gezeigt, dass eine webbasierte Selbsthilfe als Ergänzung zur multimodalen stationären psychotherapeutischen Behandlung den Verlauf der depressiven Symptome verringern kann und so die Wirkung der stationären Psychotherapie durch die Integration einer zusätzlichen Online-Intervention verbessert. Eine Stichprobe von 115 Patient*Innen, ...
Dissertation
Praktische Anwendung von aktiver Vormagnetisierung in transformatorlosen DC/DC-Konvertern
(2022)
Magnetic devices are used in almost every power electronic system. Therefore, their purpose and with that their requirements can vary in a wide range. The consequence is a large number of options regarding the priority of optimisation. In this work, the focus is on reducing the volume or weight of inductors in transformerless DC-DC converters. Active prmeagnetization is choosed as an optimisation approach. The technique enables an operation of the DC-DC-converter in the Triangular Current Mode (TCM), whereby ...
Aufsatz
Novel Class of Rhenium Borides Based on Hexagonal Boron Networks Interconnected by Short B₂ Dumbbells
(2022-09-06)
Transition metal borides are known due to their attractive mechanical, electronic, refractive, and other properties. A new class of rhenium borides was identified by synchrotron single-crystal X-ray diffraction experiments in laser-heated diamond anvil cells between 26 and 75 GPa. Recoverable to ambient conditions, compounds rhenium triboride (ReB₃) and rhenium tetraboride (ReB₄) consist of close-packed single layers of rhenium atoms alternating with boron networks built from puckered hexagonal layers, which link ...
Aufsatz
A new method for microscale cyclic crack growth characterization from notched microcantilevers and application to single crystalline tungsten and a metallic glass
(2022-06-22)
The lifetime of most metals is limited by cyclic loads, ending in fatigue failure. The progressive growth of cracks ends up in catastrophic failure. An advanced method is presented for the determination of cyclic crack growth on the microscale using a nanoindenter, which allows the characterization of > 10,000 loading cycles. It uses focused ion beam fabricated notched microcantilevers. The method has been validated by cyclic bending metallic glass and tungsten microcantilevers. The experiments reveal a stable crack ...
Video
PAISAJE Y TERRITORIO EN EL PERÚ
(2022-04-02)
Partiendo de la formación de una sensibilidad para con los paisajes culturales, se identifican y analizan los principales paisajes culturales y el desarrollo territorial en el Perú.
Siguen travesías teóricas dedicadas a la arquitectura y el paisaje: ¿qué hace allí la arquitectura? ¿Qué nos quieren decir las representaciones líticas del valle del Sondondo? ¿Qué es lo transcendental de la arquitectura del paisaje inca?
José Canziani Amico
Arquitecto y urbanista por la Universidad de Florencia, Italia
Doctor por ...
Aufsatz
Comparison of linear discriminant analysis, support vector machine and artificial neural network in classifying Nigerian local turkeys based on plumage colours using biometric traits
(2022-10-18)
The ability of linear discriminant analysis (LDA), support vector machine (SVM), and artificial neural network (ANN) models to differentiate biometric traits of Nigerian local turkeys was investigated in this study. The biometric traits (bodyweight, body length, breast girth, thigh length, shank length, keel length, wing length, and wingspan) in 200 (20-week-old) turkeys were measured. Seventy percent of the datasets were used to train the three models, with the remaining 30% being used to test their performance. All ...
Aufsatz
Use of corncob biochar and urea for pakchoi (Brassica rapa L.) cultivation: Short-term impact of pyrolysis temperature and fertiliser dose on plant growth and yield
(2022-10-18)
This study aimed to evaluate the effect of pyrolysis temperature of corncob biochar as a soil amendment and urea fertiliser on the growth and yield of pakchoi. Pakchoi was cultivated in pots
(13 cm height, 19 cm upper diameter, and 13.5 cm bottom diameter). Two factors including pyrolysis temperature of biochar and urea dose were combined with four levels each. Pyrolysis temperature factor consisted of B0 (no biochar), B1 (250 °C), B2 (300 °C), and B3 (350 °C). Urea dose consisted of F0 (no urea), F1 (0.6 g pot-¹), ...
Dissertation
Untersuchung von Gussporen in einer Aluminium-Gusslegierung mit der Computertomographie
(2022-04)
In dieser Arbeit wird das Schädigungsverhalten einer Aluminium-Gusslegierung anhand von zweidimensionalen und dreidimensionalen Verfahren untersucht. Dabei liegt das Hauptaugenmerk auf innenliegenden Gussdefekten wie Gas- und Schrumpfungsporen. Die Schädigungsentwicklung unter schwingender Belastung, sowie der Einfluss auf die Mikrostruktur und die mechanischen Eigenschaften sowie die Wechselwirkung verschiedener Gussdefekte werden dabei untersucht. Insbesondere wird der beim Versagensverhalten entscheidende Einfluss ...
Aufsatz
Agripreneurial drive among women shea butter processors in Kwara State, Nigeria: the motivating factors and efficiency
(2022-10-12)
This study examined agricultural entrepreneurship among women shea butter processors in Kwara State Nigeria. It assessed their motivation factors, level of efficiencies, determinants of output and challenges faced in the entrepreneurial drive by the women. Primary data, collected using a semi-structured questionnaire, were collected from randomly selected 120 shea butter women processors. The data obtained were analysed with descriptive statistics, index ranking and the stochastic frontier function. The results showed ...
Teil eines Buches
La cortesía verbal en textos medievales españoles: universalidad, historicidad y tradicionalidad
(Universidad de Sevilla, 2022)
La pragmática histórica y el análisis conversacional histórico exploran las tareas comunicativas y sus transformaciones en las comunidades lingüísticas y culturales de diferentes épocas (cf. Schrott 2011, 2012, 2016, Jucker/Taavitsainen 2010). Para cumplir con sus tareas comunicativas y, en particular, con las normas de cortesía los hablantes recurren a patrones y rutinas que moldean las interacciones verbales. Estas tradiciones discursivas, con su saber cultural, son una directriz cardinal para el habla cortés. La ...