York University

About: York University is a education organization based out in Toronto, Ontario, Canada. It is known for research contribution in the topics: Population & Poison control. The organization has 18899 authors who have published 43357 publications receiving 1568560 citations.

The Oxford Handbook Of Corporate Social Responsibility

Abstract: SECTION I: INTRODUCTION SECTION II: PERSPECTIVES ON CSR SECTION III: CRITIQUES OF CSR SECTION IV: ACTORS AND DRIVERS SECTION V: MANAGING CSR SECTION VI: CSR IN GLOBAL CONTEXT SECTION VII: FUTURE PERSPECTIVES AND CONCLUSIONS

First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies

Abstract: The IllustrisTNG project is a new suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics. Here we introduce the first two simulations of the series, TNG100 and TNG300, and quantify the stellar mass content of about 4000 massive galaxy groups and clusters ($10^{13} \leq M_{\rm 200c}/M_{\rm sun} \leq 10^{15}$) at recent times ($z \leq 1$). The richest clusters have half of their total stellar mass bound to satellite galaxies, with the other half being associated with the central galaxy and the diffuse intra-cluster light. The exact ICL fraction depends sensitively on the definition of a central galaxy's mass and varies in our most massive clusters between 20 to 40% of the total stellar mass. Haloes of $5\times 10^{14}M_{\rm sun}$ and above have more diffuse stellar mass outside 100 kpc than within 100 kpc, with power-law slopes of the radial mass density distribution as shallow as the dark matter's ( $-3.5 < \alpha_{\rm 3D} < -3$). Total halo mass is a very good predictor of stellar mass, and vice versa: at $z=0$, the 3D stellar mass measured within 30 kpc scales as $\propto (M_{\rm 500c})^{0.49}$ with a $\sim 0.12$ dex scatter. This is possibly too steep in comparison to the available observational constraints, even though the abundance of TNG less massive galaxies ($< 10^{11}M_{\rm sun}$ in stars) is in good agreement with the measured galaxy stellar mass functions at recent epochs. The 3D sizes of massive galaxies fall too on a tight ($\sim$0.16 dex scatter) power-law relation with halo mass, with $r^{\rm stars}_{\rm 0.5} \propto (M_{\rm 500c})^{0.53}$. Even more fundamentally, halo mass alone is a good predictor for the whole stellar mass profiles beyond the inner few kpc, and we show how on average these can be precisely recovered given a single mass measurement of the galaxy or its halo.

Discerning threats and opportunities.

Abstract: Support for this research was provided by New York University's Center for Entrepreneurial Studies. The authors thank James W. Dean, Jr., Janet Dukerich, William D. Guth, Ian C. MacMillan, Gerald R. Salancik, Charles Stubbart, and three anonymous ASQ reviewers for their valuable assistance and comments. This paper presents the results of two studies designed to investigate the characteristics of the concepts of threat and opportunity used by organizational decision makers to describe and understand issues. The first study identified the issue characteristics that managers associate with the concepts of threat and opportunity, and the second used an experimental design to demonstrate that the characteristics of issues lead to their being perceived as threats or opportunities. The results suggest the presence of a threat bias, which results in managers being more sensitive to issue characteristics associated with threats than to those associated with opportunities. The implications of the results for understanding how threats and opportunities are identified are discussed, and future research directions are indicated.'