Prospect Theory and Limit Lines

Risk acceptance criteria in the form of limit lines are investigated in the context of prospect theory. This theory departs from utility theory in several respects, an important one being the use of weights other than probabilities in the evaluation of the expected impact of uncertain outcomes. Hypothetical functions reflecting certain attitudes toward consequences and rare events are developed and combined to produce several limit lines.     

On rates of convergence to infinitely divisible laws for dependent random variables

Large O and small o approximations of the expected value of a class of functions (modified K-functional and Lipschitz class) of the normalized partial sums of dependent random variables by the expectation of the corresponding functions of infinitely divisible random variables have been established. As a special case, we have obtained rates of convergence to the Stable Limit Laws and to the Weak Laws of Large Numbers. The technique used is the conditional version of the operator method of Trotter and the Taylor expansion.     

论哲学范畴与思维方式的内在关系--兼论"效益"范畴与当代思维方式

哲学范畴与思维方式之间存在着内在的联系,一个时代的思维方式就是由当时的哲学范畴结成的"网",范畴的特点决定和体现着思维方式的特点,范畴系统的演变决定和体现着思维方式的变革.优化哲学范畴系统对优化思维方式具有重要意义.     

试论推进中心商务区(CBD)改造与建设的价值取向

推进中心商务区(CBD)改造与建设是当今世界国际大都市、区域中心城市功能转变的必然要求。从20世纪90年代以后,我国特大城市区域中心城市纷纷在原有基础上改造或者选择新址规划建设中心商务区,凸显现代性、国际性、功能复合性、交通规划的超前性等规划价值取向。文章在考察国内外经验的基础上,明确提出忽视城市历史文脉的保护、不珍惜民力、一哄而上、资源超强度利用、重复建设,将是对CBD改造建设价值取向的扭曲。最后讨论了建设"大大连"与中心商务区的定位和优先选择。     

设立中央政府投资基金 建立国土整治基地

中国西部地区尤其是大西北是我国三大经济带中经济发展相对落后的地域,由于历史和众多因素的制约,决定了开发西部是一项规模宏大、影响长远的系统工程,正基于此,各种开发方案的设计必须立足于这一区情.因此,设立中央政府投资基金,建立国土整治基地是非常必要,也是切实可行的.     

A Bivariate Generalization of Gamma Distribution

In this article, a bivariate generalisation of the gamma distribution is proposed by using an unsymmetrical bivariate characteristic function; an extension to the non central case also receives attention. The probability density functions of the product and ratio of the correlated components of this distribution are also derived. The benefits of introducing this generalized bivariate gamma distribution and the distributions of the product and the ratio of its components will be demonstrated by graphical representations of their density functions. An example of this generalized bivariate gamma distribution to rainfall data for two specific districts in the North West province is also given to illustrate the greater versatility of the new distribution.     

论哲学基本问题与马克思主义哲学中心问题的关系

思维和存在的关系问题是哲学的基本问题 ,它通过时代哲学的主要问题和哲学派别的中心问题表现出来 ,是一般和个别、共性和个性的关系。在坚持哲学基本问题的基础上勇敢地去解决时代哲学的主要问题 ,以克服简单化、教条化和否定哲学基本问题的倾向。     

慢直播的互动仪式建构与融合传播

新媒体疫情慢直播通过虚拟的身体在场,共同的关注焦点以及受众共同的情绪、情感基础,建构起互动仪式.受众在这种互动仪式中,形成对"云监工"等群体身份的认同,创造和共享符号资本,并获得抗疫信心等情感能量回报.新媒体疫情慢直播活动中,形成的情感传播模式及其收编兼纳青年亚文化的行为对主流媒体的融合传播具有借鉴意义.     

一种新的求极限方法

本文将不动点原理应用于极限问题中,得到一种求极限的方法。     

限幅自保护高温超导接收机前端研究

提出了一种新型的、具有限幅自保护功能的新型高温超导高性能接收机前端系统方案。采用将高温超导限幅滤波器前置于低噪放进行混合集成,利用高温超导限幅滤波器优异的滤波和限幅特性实现同时具有高灵敏度和自保护功能的接收机前端。实验结果表明该滤波器可以有效地保护后端的低噪放不被烧毁或阻塞。采用超导-常规电路混合集成工艺研制而成的限幅自保护高温超导接收机前端具有优异的接收灵敏度,总噪声系数小于0.7dB。