Performance of thermally excited resonators

A study of electrothermal excitation of micromachined silicon beams is reported. The temperature distribution is calculated as a function of the position of the transducer, resulting in stress in the structure which reduces the resonance frequency. Test samples are realized and measurements of resonance frequency, vibration shape and vibration amplitude are carried out. There is a satisfactory agreement between theory and experiment at small thermal stresses. Near the buckling load we find distinct deviations from theory which are ascribed to mechanical imperfections of the beams

Schadenfreude as a mate-value-tracking mechanism. Replication and extension of Colyn and Gordon (2013).

The present research provides a replication and extension of L. A. Colyn and A. K. Gordon's (2013) study on gender differences in schadenfreude. An experiment-in which both the gender of the unfortunate other and the dimension on which the misfortune occurred were manipulated-showed that female participants reported more schadenfreude when a same-gender other (vs. an opposite-gender other) experienced a misfortune on the dimension of physical attractiveness (vs. social status), whereas male participants reported more schadenfreude when a same-gender other (vs. an opposite-gender other) experienced a misfortune on the dimension of social status (vs. physical attractiveness). In the discussion, differences between our results and those of Colyn and Gordon are discussed

The role of self-evaluation and envy in schadenfreude

In this article we address why and when people feel schadenfreude (pleasure at the misfortunes of others) in both interpersonal and intergroup contexts. Using findings from our own research programmes we show that schadenfreude is intensified when people are chronically or momentarily threatened in their self-worth, whereas it is attenuated when their self-evaluation is boosted; that malicious envy, but not benign envy, intensifies pleasure at the misfortunes of others; that these emotional responses are manifested in intergroup contexts via the same mechanisms; and that mere stereotypes, in the absence of any interaction or overt competition, are sufficient to elicit schadenfreude via such mechanisms. Together, these findings suggest that self-evaluation and envy both play an important role in evoking schadenfreude; people feel pleasure at the misfortunes of others when these misfortunes provide them with social comparisons that enhance their feelings of self-worth or remove the basis for painful feelings of envy

Ureumprocessen, Chemico, SNAM, DSM, Toyo Koatsu

Document(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science