输美产品应循供应链安全新规

美国市场经济比较成熟,政府对企业的经营范围与经营方式很少限制,但对各行业产品进出口、批发、零售均有极为详尽的法规与执照要求,而且执法十分严厉。如美国对于产品责任的规定,使得外国制造商任何不慎的举动均可能导致巨额损失。     

Asymptotic behaviour of mean-quantile efficient portfolios

In this paper we investigate portfolio optimization in the Black–Scholes continuous-time setting under quantile based risk measures: value at risk, capital at risk and relative value at risk. We show that the optimization results are consistent with Merton’s two-fund separation theorem, i.e., that every optimal strategy is a weighted average of the bond and Merton’s portfolio. We present optimization results for constrained portfolios with respect to these risk measures, showing for instance that under value at risk, in better markets and during longer time horizons, it is optimal to invest less into the risky assets.This research was partially supported by the National Science and Engineering Research Council of Canada, and the Mathematics of Information Technology and Complex Systems (MITACS) Network of Centres of Excellence.     

Inequality is not Injustice

The American sciologist John Rawls of Harvard has influenced academic discussion by his argument that justice requires equality as a primary purpose of governent policy. The British philosopher Antony Flew, formerly of the University of Reading and currently teaching at the Social Philosophy and Policy Center of Bowling Green State University in Ohio, questions Rawls reasoning. He affirms that equality is not justice, a truth seen and expounded by the classical philosophers, but neglected by egalitarians.     

Organizational buying in the offshore oil industry

A model of organizational buying is advanced based on interview data from the offshore oil industry. The variable linking complexity and organizational participation was the criteria of evaluation in the buying process.