Notes on optimality conditions using Newton diagrams and sums of squares

We consider relationships between optimality conditions using Newton diagrams and sums of squares of polynomials and power series.Comment: Corrected version of the article [Serdica Math. J.(2015) 41, pp. 431-456

Career Development of College Students through Part-Time Work: The Role of Leader-Member Exchange and Taking Charge Behavior

This study examines the potential benefit of college students' part-time work on their career development by focusing on leader-member exchange (LMX) and taking charge behavior in the workplace. Using a sample of Japanese college students, results from this study indicate that taking charge behavior in part-time work mediates the relationship between LMX quality with supervisors and career development (focus of career exploration, self-efficacy toward postcollege employment and proactive career behavior). The results also indicate that proactive personality and conscientiousness moderate the relationship between LMX quality and taking charge behavior, and that job autonomy and skill variety moderate the relationship between taking charge behaviors and career development. Implications for theory and practice are discussed.part-time work, leader-member exchange, taking charge behavior, career development, college student

"A Characterization of the Plurality Rule"

We consider an axiomatic characterization of the plurality rule, which selects the alternative(s) most preferred by the largest number of individuals. We strengthen the characterization result of Yeh (Economic Theory 34: 575{583, 2008) by replacing effciency axiom by the weaker axiom called faithfulness . Formally, we show that the plurality rule is the only rule satisfying anonymity, neutrality, reinforcement, tops-only , and faithfulness .

IRAS observations of starburst galaxies

Far infrared properties of Starburst galaxies were analyzed using IRAS observations at 25, 60, and 100 micrometers. Seventy-nine of 102 Starburst galaxies from the list of Balzano were detected. These galaxies have high IR luminosities of up to a few 10 to the 12th power L sub 0 and concentrate in a small area of the IR color - color diagram. The IR power law spectral indices, alpha, lie within the ranges -2.5 <alpha(60,25)< -1.5 and -1.5 <alpha(100,60)< 0. These observed indices can be interpreted in terms of a cold disk component and a warm component. More than 80% of the 60 micrometer emission comes from the warm component. The fraction of the 60 micrometer emission attributable to the warm component can be used as an activity indicator