It has been recently shown that in rat liver there are two enzymes which phosphorylate glucose to glucose 6-phosphate. One of them is a hexokinase with a great affinity for glucose and, like those of other animal tissues it is inhibited by glucose 6phosphate; the other one, named glucokinase, has a low affinity for glucose, is not inhibited by glucose 6phosphate, and appears to be responsible f...

We study hypercyclicity properties of functions of Banach space operators. Generalizations of the results of Herzog-Schmoeger and Bermudez-Miller are obtained. As a corollary we also show that each non-trivial operator commuting with a generalized backward shift is supercyclic. This gives a positive answer to a conjecture of Godefroy and Shapiro. Furthermore, we show that the norm-closures of t...

We assess the Neumark, Salas and Wascher (NSW) critique of our minimum wage findings. Recent studies, including one by NSW, obtain small employment elasticities for restaurants, -0.06 or less in magnitude. The substantive critique in NSW thus centers primarily upon teens. Using a longer (19792014) sample than used by NSW and in our own previous work, we find clear evidence that teen minimum wag...

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This shark has been listed among Chilean species based on Randall and Cea-Egaña (1984), who gave a listing of vernacular names for the fishes of Easter Island (Pequeño 1989). Grove and Lavenberg (1997) record having photographed Carcharhinus galapagensis (Snodgrass and Heller 1905) at Salas y Gomez Is. There are no data to our knowledge of anyone examining specimens captured at either Easter Is...

MANUEL A. OTERO, PABLO R. GRENAT, JULIAN A. VALETTI, NANCY E. SALAS & ADOLFO L. MARTINO Ecología, Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto. Ruta Nacional N° 36 km 601, (X5804BYA) Río Cuarto, Argentina. E-mails: manuelalejandrootero@gmail.com, pgrenat@exa.unrc.edu.ar, jvaletti@exa.unrc.edu.ar, nsalas@exa.unr...

Vargas, López, Salas, and Thinus-Blanc showed that goldfish (Carassius auratus) can use both geometric and featural cues in relocating a target corner in a rectangular enclosure. When featural cues (arrangement of striped walls) were put in conflict with geometric cues, results differed according to target location during training. Vargas, López, et al. explained the results of their cue confli...

Current Operating Systems and user applications provide several security tools that are designed to automatically handle a set of well-known events and threats, whereas they inform the user that something potentially dangerous is happening an ask her to take a decision. Since we believe that this learning process could have a relevant educational value for children, we present, in this paper, a...

As the role of teams becomes more important in organizations, developing and maintaining high performance teams has been the goal of several researchers (Decker, Sycara, & Williamson 1997; Beyerlein, Johnson, & Beyerlein, 2001, Cannon-Bowers & Salas, 1998; McNeese, Salas & Endsley, 2001; Salas, Bowers, & Edens, 2001) . One major question is how to turn a team of experts into an expert team. Sev...