W present a dynamic factor-analytic choice model to capture evolution of brand positions in latent attribute space. Our dynamic model allows researchers to investigate brand positioning in new categories or mature categories affected by structural change such as entry. We argue that even for mature categories not affected by structural change, the assumption of stable attributes may be untenabl...

Die von mehreren Autoren nach Einwirkung von Röntgenstrahlen (ca. 25 kr) und H20 2 auf Suspen­ sionen von Ascites-Tumorzellen gefundene Hem­ mung der aeroben und anaeroben Glykolyse31,32 wird von diesen auf den gleichzeitig beobachtbaren Rückgang in der stationären DPN®-Konzentration zurückgeführt. Diese Vorgänge haben vielleicht auch neben dem Kaliumverlust eine Bedeutung für die nach Bestrahl...

Morphology is the aspect of language concerned with the internal structure of words, and languages vary in the extent to which they rely on morphological structure. Consequently, it is not clear whether morphology is a basic element of a linguistic structure or whether it emerges from systematic regularities between the form and meaning of words. Here, we looked for evidence of morphological st...

We provide a selective review of recent progress in the analysis of several physiological and physiologically inspired fluid-structure interaction problems, our aimbeing to explain the underlying physicalmechanisms that cause the observed behaviors. Specifically, we discuss recent studies of self-excited oscillations in collapsible tubes, focusing primarily on studies of an idealized model syst...

objective: the most commonly used instrument for the research and treatment of excessive internet use is young’s internet addiction test (iat). while the iat has been translated to several languages (including persian) and has demonstrated good psychometric properties across several independent studies, there is still a room for alternative assessment instruments. this study reports a validatio...

in this study, we have theoretically investigated the effect of electron stopper layer on internal temperature distribution of high performance vertical cavity surface-emitting laser emitting at 1305 nm.  simulation software pics3d, which self-consistently combines the 3d simulation of carrier transport, self-heating, gain computation and wave-guiding, was used. simulation results show that cha...