诊断试验的一种类似于信息分析的方法

由信息论,诊断试验前后关于病人真实患病情况的不肯定度均可用Shannon熵来表示,两者之差(即不肯定度的减少量)表示由该试验所提供的信息量。本文对不肯定度采用一种不同于Shannon熵的测度,给出了诊断试验的一种类似于信息分析的方法。根据这一方法,本文提出了一种可用于评价试验有效性的指标,并给出了该指标的方差计算公式。

克劳修斯熵、玻尔兹曼熵与信息熵

本文阐述了克劳修斯熵、玻尔兹曼熵与信息熵的概念及相互关系。并介绍了信息熵公式的一些简单应用。

多种因素下的旅游投资博弈探讨

作为一项新兴的产业,旅游业与其他行业有很大的不同,因此,旅游投资与其他行业的投资也存在很多的差异.本文主要探讨了多种因素下的旅游投资博弈.

熵的性质及其应用

介绍了随机试验熵的定义及其主要性质,从不肯定性的角度揭示随机试验的另一重要特征,最后举出熵的应用实例。

统计学与随机性

一、统计研究的特点 什么是统计?统计就是对客观事物量的方面所进行的调查与研究,它是人类的一项实践活动。借助于这项实践活动,人们对客观事物量的方面有了认识。 统计不同于一般的调查研究的主要之点就在于:统计不研究客观事物质的方面,只对客观事物量的方面进行调查研究;一般的调查研究具有广泛的内容与含义,而统计的内容与含义没有那么广泛,它狭窄得多,但也明确得多。 我们知道,任何事物都是由质与量两方面的统一所组成的。

The Relationship Between Credit Risk Management and Profitability Among the Commercial Banks in Kenya

Banks operate in an environment of considerable risks and uncertainty. Credit risk has always been a vicinity of concern not only to bankers but to all in the business world because the risks of a trading partner not fulfilling his obligations in full on due date can seriously jeopardize the affairs of the other partner. Credit risk management in banks has become more important not only because of the series of financial crisis that the world has experienced in the recent past, but also the introduction of Basel II Accord. The objective of the study was to establish the relationship between credit risk management and profitability in commercial banks in Kenya, Both qualitative and quantitative methods were used in order to fulfill the main purpose of the study. A regression model was used to do the empirical analysis. The results obtained from the regression model show that there is an effect of credit risk management on profitability at a reasonable level. The findings and analysis reveal that credit risk management has an effect on profitability in all the commercial banks analyzed.