There has been considerable interest in the past in analyzing specific families of hyperplane arrangements from the perspective of freeness. Examples of such families have primarily included classes of subarrangements of Coxeter arrangements. The subarrangements of the braid arrangement An , the Weyl arrangement of type An−1, are known as the graphical arrangements. They correspond naturally to...

Background and Objectives: After the introduction of the pneumococcal vaccine, an increase has been observed in the disease due to nonspecific stereotypes of the vaccine. This study was conducted to determine the spatial distribution of pneumococcal vaccine coverage and common stereotypes of streptococcus pneumonia after vaccine introduction in the vaccine recipient countries.   Methods: The ...

We show that the free hyperplane arrangements form a Zariski-closed set in various parameter spaces. Given a geometric lattice L let V(L) be the parameter space of arrangements with intersection lattice isomorphic to L. Coupling our result with a theorem of Yuzvinsky, we conclude that in V(L) the free arrangements are parameterized by a union of connected components of V(L).

Abstract In recent decades, because of the vast socio-cultural changes which occurred in Iran, Iranian women have experienced new values and identities and they have achieved more advanced education and consciousness, so that they oppose the gender stereotypes which attribute inferior characteristics to women and cause inequalities and limitations in their everyday life. Although gender stereo...

While CSCW research has mostly been focusing on desktop applications there is a growing interest on ubiquitous and tangible computing. We present ethnographic fieldwork and prototypes to address how tangible computing can support collaboration and learning. The student projects at the Academy of Fine Arts in Vienna is a relevant case to study, for the variety and distributed character of the co...

In the present article, we investigate the influence of sociocultural stereotypes on the impression formation of basketball players and coaches. In Experiment 1 (n = 32), participants were shown a picture of a black or white basketball player prior to observation of a point-light video of a player executing a basketball free throw. The participant was informed that the player depicted in the pi...