This article presents a new method to test on whether a parametric model is capable of describing data properly. It also introduces a simple procedure to generate simultaneous prediction bands based on independent copies of a process. The performance of these prediction bands, e.g. in a leave-one-out cross-validation, will also be used as another indication of whether data is modeled properly. Both methods are applied to data from fatigue experiments on prestressed concrete beam girders....

Recent research indicates that pro-environmental behavior may be driven by concerns about one’s moral identity. Using identification with the environmentalist movement Fridays for Future, this paper develops and empirically tests a straightforward model of self-signaling. We assume that pro-environmental behavior, here taking the train rather than the plane for a journey, serves as a means of self-signaling. On the basis of a large-scale survey experiment with revealed preferences, we find evid...

Zur umfassenden Identifizierung und Quantifizierung aller in einer komplexen Probe befindlichen Analyten steht die analytische Chemie derzeit im Bereich der Massenspektrometrie vor großen Herausforderungen. Grund ist eine fehlende, geeignete Probenzufuhr-und Ionisierungsmethode. In den letzten Jahren hat sich hier die Elektrosprayionisierung durchgesetzt, da sie Probenzufuhr und Ionisierung in einem Aufbau vereint. Zudem arbeitet sie unter Umgebungsbedingungen und eignet sich deshalb besonder...

Understanding of the spin and exciton properties in colloidal nanostructures paves the way for their applications in a variety of fields, such as spintronics and quantum science and technology. Using magneto-optical experimental techniques, the fundamental properties such as polarization, g-factor, spin dynamics in three kind of semiconductor nanocrystals (NCs), i.e. CdSe, CuCl and all-inorganic perovskite (CsPbBr3, CsPbI3) are studied, which help to understand the exciton fine structures and...

Das „three-dimensional reference interaction site model“ (3D RISM) erlaubt es die Solvensverteilung, und somit die damit verbundenen thermodynamischen Eigenschaften, um ein gegebenes Solvat zu berechnen. Dies kann ein kleines, wirkstoffartiges Molekül sein oder ein Protein mit tausenden Atomen. Zusammen mit Methoden, wie Molekulardynamik- (MD) Simulationen und Kraftfeldern, ist es möglich, die Unterschiede in der freien Energie zwischen Konformeren, Molekülen und Komplexen in biologisch relev...

The entrepreneurial journey is an emotional rollercoaster with unpredictable ups and downs, and entrepreneurial actions are performed in an ill-defined environment. For educational psychologists, the strengthening of students’ abilities to solve and reflect on ill-defined situations of the venturing process is the main learning objective. The discipline of entrepreneurship can benefit from research that enables clarification towards the entrepreneurial context and understanding of the individ...

Magnetic pulse welding involves the application of a controlled electromagnetic impulse and consequent high velocity impact between two overlapped parts, which leads to plastic deformation and consolidation between the parts along the interface without melting. The key variables in magnetic pulse welding include a high magnitude discharge energy of damped sinusoidal nature, the coil type and geometry and the materials, thicknesses and geometry of the overlapped metallic sheets. A com...

Forming processes of sheet metals require knowledge of the material behaviour up to large levels of plastic deformation. To this purpose, biaxial bulge tests are often used. In present paper, a dynamic bulge test is presented. The testing principle relies on conventional split Hopkinson bar testing. Though, as opposed to existing setups, a different positioning of the bars leaves the sample fully accessible for optical measurements. The pressure imposed to a circular sample, togethe...