共查询到19条相似文献,搜索用时 171 毫秒
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成晟 《上海立信会计学院学报》2003,17(1):22-24,29
医院的会计与统计属于医院经济管理信息系统 ,在 2 1世纪的今天 ,医院将面临各种新情况、新问题和新要求 ,医院的各项经济活动、各种经济信息、业绩分析评价、目标落实的措施、内部考核的各种数据等等 ,都与会计与统计有着紧密的联系 ,都要求会计与统计在管理上与之相适应。笔者试从二者的结合上谈谈自己的认识和看法。一、会计与统计在理论上的有机结合了解会计与统计的渊源关系的过程 ,我们可以发现 ,人类起初的统计行为 ,大体上是与会计行为同时产生的。在进入古代文明社会之后 ,统计工作又是“大会计”范畴中的一个组成部分 ,会计、统计… 相似文献
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雷曙光 《中小企业管理与科技》2011,(31)
传统的系统防御方法是基于特征库的被动防御,它们无法实时发现零日攻击。本文基于隐马尔科夫模型建立描述系统CPU行为的模型。该方法根据系统用户的行为习惯动态调整模型参数,利用观测序列相对于代表正常行为轮廓的模型的似然概率衡量系统CPU行为的正常度。由于该方法不需要特征库,可以更有效地应用于未知主机威胁的早期检测。 相似文献
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彩票与概率统计有着千丝万缕的联系,这是数学学科与社会生活实践相联系的一大典型。文章通过阐述概率统计、彩票的具体情况,分析概率统计在彩票中的应用依据,对概率统计在彩票中的应用展开探讨,旨在为如何促进概率统计在彩票中的科学合理应用研究提供一些思路。 相似文献
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维修性是产品使用阶段的设计属性,维修性好坏直接影响到产品的持续使用能力。产品维修性验证需要通过特定试验进行,本文基于概率统计的方法,论述了产品维修性试验开展的理论基础,并在某型产品维修性试验中进行了验证。 相似文献
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V. V. Shvyrkov 《Quality and Quantity》1988,22(4):393-401
The theory of probability employs a deductive method of thinking which traces effect from cause. Statistics uses an inductive method of thinking and tries to trace cause from effect. This noble goal can be successfully achieved if and only if a researcher deals with a homogeneous data set. A homogeneous data set is generated logically and then it is to be tested statistically. The homogeneity principle bridges the gap between probability theory and applied statistics and makes statistics as precise as the theory of probability. In this role statistics opens new horizons for estimating parameters when the central limit theorem is not applied. 相似文献
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《Human Resource Management Review》2017,27(2):306-315
We propose that the process of abduction is a useful tool for how management scholars can better develop new explanatory hypotheses and theories. In doing so, we differentiate abduction from the more commonly studied methods of deduction and induction. We briefly explain the various research streams on abductive reasoning and propose a version that is focused more on the process of abductive reasoning and less on the outcomes. We argue that by using contrastive reasoning and by recognizing different triggers of abduction, this process can help guide researchers to the types of causal explanations that are interesting. We conclude with some examples of abduction in the history of management research and a discussion of features of the reasoning processes involved. 相似文献
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Si studia una nozione di riassunto esaustivo, che diremo a fini predittivi e che è già stata oggetto d'indagine da parte di F. Spizzichino sotto diversa denominazione. Si pone in evidenza la naturalezza di questa nuova definizione che, senza alcuna restrizione, può essere applicata in ogni tipo di ragionamento induttivo. Nella prima parte della ricerca, dopo alcune esemplificazioni sull'applicazione in alcuni tipici problemi inferenziali con particolare riguardo alla costruzione di modelli ipotetici a partire da considerazioni squisitamente predittive del concentto di riassunto esaustivo a fini predittivi, se ne studiano le principali proprietà. Nella seconda parte (che apparirà in un prossimo numero di questa Rivista) se ne analizzeranno i rapporti con le più abituali nozioni di riassunto esaustivo.
Lavoro eseguito nell'ambito del GNAFA-CNR. 相似文献
In this paper (first part of a wider work; the second part will appear in the next issue of this journal) we support the idea that the major objective of inductive reasoning is the distribution for outcomes of any sample not jet observed (predictive distribution) Parameters are a secondary device that can ultimately be justified and can lend some simplification.According to this point of view, we study a notion of prediction sufficiency introduced by F. Spizzichino (1978). Many of the results true for classical sufficient statistics apply to our predictive sufficient statistics as we demonstrate in Section 3.In the second part we analyse sequences of predictive sufficient statistics and their relations with classical sufficient statistics for the parameters which are limits of these sequences. The examples of Section 2 represent a first limited approach to this problem.
Lavoro eseguito nell'ambito del GNAFA-CNR. 相似文献
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独立学院作为我国高等教育大众化的产物,是一种新的办学模式。开拓独具特色的"应用型人才培养"模式是三本院校持续发展的保障。而概率论与数理统计作为应用性广泛的数学分支是一门重要的基础课程,那么对当前三本院校的概率论与数理统计如何改革,才能既符合独立学院的办学模式。探索一些改革措施,对提高教学质量具有重要的意义。文章从教学方法,教学内容,教学结构以及教材选取等多方面探讨了独立学院概率论与数理统计的改革。 相似文献
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微观交通仿真技术是解决城市交通网络拥塞问题的有效工具,情感是人类具有智能的一个重要体现,然而如何通过情感来提高Agent的智能性已成为亟待解决的关键问题。文章结合生理和认知对情感的影响,提出了情感计算的建模方法,建立与Agent相结合的情感结构,以产生具体、真实的情感行为。 相似文献
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W. S. Kendall 《Statistica Neerlandica》1993,47(1):9-25
This paper discusses the uses of computer algebra within statistics and probability. A distinction is drawn between the use of computer algebra packages to support investigations, by performing calculations, ankl their use to implement structure; to build in elements of a theory (such as stochastic calculus or the Taylor string theory of Barndorff Nielsen and others) as a preliminary to research investigations. Brief surveys are given of instances in the literature of use of computer algebra in probability and statistics. Two examples of implementations of structure are discussed, both drawn from the author's own work with the computer algebra package REDUCE. One is a simple demonstration using moments of the Poisson distribution. The other is itovsn3 , an implementation of the semimartingale stochastic calculus. It is described how itovsn3 may be used to derive the characteristic function of the Lévy stochastic area, following a proof due to S. Janson. Prospects for future work and for work in progress are discussed. 相似文献
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Two studies were carried out to analyze whether learning technical drawing improves a person’s ability for spatial visualization.
Visualization and inductive reasoning tests were applied at the beginning and end of a course in technical drawing in samples
of first year engineering students. In both studies it was observed that a moderate percentage of students improved their
Visualization test execution. The improvement was similar in men and women. There was no improvement on the inductive reasoning
test. The results support the conclusion that the spatial visualization ability can be improved with training. 相似文献
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Concepts,contexts, and mindsets: Putting human resource management research in perspectives 下载免费PDF全文
Fang Lee Cooke 《Human Resource Management Journal》2018,28(1):1-13
Why is context important in human resource management (HRM) research? What and how contextual factors may be studied when investigating an organisational phenomenon? Against a positivist trend of decontextualisation in HRM research, this paper addresses these questions by situating them in an international context. It argues that context is important in making sense of what is happening at workplaces in order to provide relevant solutions. It also outlines three layers of context and draws on an empirical story to illustrate how the utilisation and conceptualisation of context may be underpinned by the researcher's intellectual and social upbringing and theoretical orientation. The paper calls for more qualitative studies to redress the imbalance in HRM research. It also calls for a more open‐minded, inductive, and inclusive approach to indigenous research that may present very different contexts, ways of contextualising, and knowledge paradigms from the dominant discourses prevailing in HRM research. 相似文献
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信贷配给:从理论模型到中国实际 总被引:4,自引:0,他引:4
信贷配给是各国资金配置中常见的现象,在中国更是普遍存在“中小企业贷款难”的问题。这究竟是一种短期行为还是长期均衡现象,究竟是政府的干预造成还是商业银行自身理性行为使然?本文将利用信息经济学知识对信贷配给做出均衡分析,并进行模型的扩展,结合中国实际探讨如何减少因信息不对称带来的信贷配给。 相似文献