Unconditional generosity in humans is a puzzle. One possibility is that individuals benefit from being seen as generous if there is competition for access to partners and if generosity is a costly-and therefore reliable-signal of partner quality [1-3]. The "competitive helping" hypothesis predicts that people will compete to be the most generous, particularly in the presence of attractive poten...

Compared to mature investment firms, first-time funds in private equity lack an investment and performance track record, and require alternative signals to establish initial trust with investors. The paper finds that investors allocate more capital to first-time funds if they have a higher share of managers with relevant experience, such as from another private equity group or a bank. In partic...

We give an explicit proof of the result that non trivial conserved n−2 forms for a spin 2 field on a background corresponding to a solution to Einstein’s equation (with or without cosmological constant) are characterized uniquely by the Killing vector fields of the background. ∗ Research Associate of the National Fund for Scientific Research (Belgium). In dimensions n > 2, a consistent theory f...

Starting up a new lab is of a course a great challenge, but few young PIs will realize that getting started is the easy part. Indeed, once the lab is up and running, and hopefully doing very well, a whole new set of challenges emerges on top of the typical ones like fund raising and paper publication. Perhaps most dauntingly, you’ll be expected to manage the different people in your group, buil...

Abstract The Income Stabilization Tool, a risk management scheme introduced within the Common Agricultural Policy (CAP) 2014–2020, could help European Union farmers manage income risks they face. This study assesses potential impact of implementing this tool through maximum level contribution to fund which determines an indifference participate in and its financial sustainability. relies on exp...

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Although many think campaign donations buy influence from legislators, scholars have difficulty determining whether and how much influence contributions have in the legislative process. Many studies seek to identify the influence of donors on roll call votes. After considerable debate most scholars have concluded that donors have little influence on these votes. What voting studies cannot detec...