Existence and Nash implementation of efficient sharing rules for a commonly owned technology

Suppose that a group of individuals owns collectively a technology which produces a consumption good by means of a (possibly heterogeneous) input. A sharing rule associates input contributions with a vector of consumptions that are technologically feasible. We show that the set of allocations obtained by any continuous sharing rule contains Pareto efficient allocations. We also present a mechanism that implements in Nash equilibrium the Pareto efficient allocations contained in an arbitrary sharing rule. Received: 29 June 1998/Accepted: 15 November 2000     

Social choice with analytic preferences

Arrow's axioms for social welfare functions are shown to be inconsistent when the set of alternatives is the nonnegative orthant in a multidimensional Euclidean space and preferences are assumed to be either the set of analytic classical economic preferences or the set of Euclidean spatial preferences. When either of these preference domains is combined with an agenda domain consisting of compact sets with nonempty interiors, strengthened versions of the Arrovian social choice correspondence axioms are shown to be consistent. To help establish the economic possibility theorem, an ordinal version of the Analytic Continuation Principle is developed. Received: 4 July 2000/Accepted: 2 April 2001     

“读图时代”新闻摄影真实性的坚守

随着照相手机、数码相机以及网络的盛行,人们已经进入了"读图时代",由此产生了各种失实图片.对新闻摄影行业和新闻真实性原则造成了巨大冲击.为此,在"读图时代"只有坚持和维护新闻摄影的真实性原则,强化新闻从业人员的职业道德修养和专业素养,建立健全完善的行业相关机制,以法律人,才能创造一个良好的媒体环境.     

中国式现代化生态文明创造及时代超越性

西方资本主义生态现代化之路向是以全球性生态空间修复策略、时间修复策略掺杂生态霸权主义谋划而展现自身的生态叙事合法性的。它所证成的合理性,实质上不过是资本逻辑的生态隐性呈现及非正义剥夺。拒斥“资本丛林”成为新的生态文明创造的基本方向。从实践的生态本体论、认识论以及价值论出发,以构建“地球生命共同体”为鹄的,中国式现代化生态文明创造构筑了一个“人与自然是生命共同体”“人类命运共同体”“人与自然的生态伦理共同体”逐次展开的新路径。它摒弃人与自然对立关系的思维模式,建构了作为对象性的本质力量的生态主体性,塑造了以总体性环境正义为特征的伦理样态,实现了对资本主义生态空间生产的时代超越。中国式现代化生态文明创造的包容性与发展性为其能持续引领全球生态文明提供了可能。