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沃尔概率比重综合评价模型及实证研究 被引量:1
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作者 丁岳维 李海霞 张玖艳 《会计之友》 北大核心 2013年第3期25-28,共4页
文章在传统沃尔比重评分法的基础上,采用16家公路行业上市公司年报数据,选取11个具有行业特色和代表性的统计指标为信息样本,运用正态分布原理,测定客观的概率比重,建立沃尔概率比重综合评价模型,通过量化实证研究,评价公路上市公司的... 文章在传统沃尔比重评分法的基础上,采用16家公路行业上市公司年报数据,选取11个具有行业特色和代表性的统计指标为信息样本,运用正态分布原理,测定客观的概率比重,建立沃尔概率比重综合评价模型,通过量化实证研究,评价公路上市公司的财务状况和经营成果,为沃尔比重法的研究提供有参考价值的评价模型和新研究思路。 展开更多
关键词 沃尔比重 财务指标 概率测定比重
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^(230)Acβ-延发裂变概率的测定
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作者 袁双贵 杨维凡 +2 位作者 徐岩冰 肖永厚 罗亦孝 《中国科学(A辑)》 CSCD 北大核心 2002年第8期743-748,共6页
由60MeV/μ18O离子照射天然钍靶所引起的232Th-2p反应产生230Ra,通过放射化学分离方法从被照射的靶中提取出镭元素并制成薄源,经230Ra230Ac得到230Ac.用云母裂变径迹探测器和PHGeγ射线探测器对来自源中的裂变碎片和γ谱进行记录和测量... 由60MeV/μ18O离子照射天然钍靶所引起的232Th-2p反应产生230Ra,通过放射化学分离方法从被照射的靶中提取出镭元素并制成薄源,经230Ra230Ac得到230Ac.用云母裂变径迹探测器和PHGeγ射线探测器对来自源中的裂变碎片和γ谱进行记录和测量,借助于所测得的两个裂变事件和γ谱,鉴别了β-延发裂变核230Ac,得到了它的β-延发裂变概率为(1.19±0.85)×10-8. 展开更多
关键词 ^230Ac β-延发裂变概率 多核子转移反应 放射化学分离 核衰变过程 概率测定 核物理学 裂变事件
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随机不变测度的维数与维数分布
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作者 杨元启 《三峡大学学报(自然科学版)》 CAS 2002年第2期173-175,共3页
介绍了测度的维数和维数分布的概念,对随机不变测度μ*,获得了μ*的维数及其维数分布.
关键词 随机不变测度 统计自相似集 维数 维数分布 概率测定 概率空间
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高校国有资产绩效综合评价模型构建研究 被引量:6
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作者 丁岳维 张亚琴 郝晓春 《会计之友》 北大核心 2014年第2期119-122,共4页
高校国有资产按用途可分为经营性国有资产和非经营性国有资产,文章对其分别建立绩效评价指标体系,并基于主成分分析法,运用正态分布原理,测定客观的概率比重,构建概率权数综合评价模型,对高校国有资产进行全面、系统的评价,为教育资源... 高校国有资产按用途可分为经营性国有资产和非经营性国有资产,文章对其分别建立绩效评价指标体系,并基于主成分分析法,运用正态分布原理,测定客观的概率比重,构建概率权数综合评价模型,对高校国有资产进行全面、系统的评价,为教育资源的高效配置与利用提供量化的决策依据。 展开更多
关键词 高校国有资产 指标体系 主成分分析法 测定概率比重
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A generalization of exotic options pricing formulae 被引量:3
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作者 LI Shu-jin LI Sheng-hong 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2006年第4期584-590,共7页
Exotic options, or “path-dependent” options are options whose payoff depends on the behavior of the price of the underlying between 0 and the maturity, rather than merely on the final price of the underlying, such a... Exotic options, or “path-dependent” options are options whose payoff depends on the behavior of the price of the underlying between 0 and the maturity, rather than merely on the final price of the underlying, such as compound options, reset options and so on. In this paper, a generalization of the Geske formula for compound call options is obtained in the case of time-dependent volatility and time-dependent interest rate by applying martingale methods and the change of numeraire or the change of probability measure. An analytic formula for the reset call options with predetermined dates is also derived in the case by using the same approach. In contrast to partial differential equation (PDE) approach, our approach is simpler. 展开更多
关键词 Risk-neutral measure Compound options Change of probability measure NUMERAIRE Girsanov's theorem
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Keyword Confidence Evaluation Algorithm Based on Word Activation Forces
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作者 Li Baoxiang Chang Fengxiang +1 位作者 Liu Gang Guo Jun 《China Communications》 SCIE CSCD 2012年第11期54-62,共9页
Many Spoken Term Detection (STD) systems use query expansion to return an increased number of keyword candidates and make posterior probability a confidence feature to reject false alarms. However, some keyword candid... Many Spoken Term Detection (STD) systems use query expansion to return an increased number of keyword candidates and make posterior probability a confidence feature to reject false alarms. However, some keyword candidates hold high posterior probability although these are not recognized correctly. We investigate the Word Activation Force (WAF) model that compatibly encodes syntactical and semantic information into sparse coding directed networks. A high-level confidence feature Keyword Activation Force (KAF) based on WAF is proposed. KAF can be used for detecting false alarms by considering information about the neighbors to provide a more reliable and accurate keyword affinity. Compared with the baseline system, a relative reduction of 30.94% in average error rate could be achieved when KAF is combined with the posterior probability and the language model score. 展开更多
关键词 speech recognition STD KAF
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Determination Multipole Mixing Ratios and Transition Strengths of Gamma Rays from Level Studies of 93Mo (p, nγ) Reaction
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作者 Mayyada M. Hamarashid 《Journal of Physical Science and Application》 2012年第7期253-257,共5页
The multipole mixing ratios have been calculated by a2-ratio method, from levels of 93Mo(p, nγ) reaction. The branching ratios of such γ-transitions are used to calculate the total gamma widths. Besides, the trans... The multipole mixing ratios have been calculated by a2-ratio method, from levels of 93Mo(p, nγ) reaction. The branching ratios of such γ-transitions are used to calculate the total gamma widths. Besides, the transition strengths and probabilities have been calculated for γ-transitions from excited states whose life times have been reported previously. The results are found to be in general in good agreement with the previous results populated from the previous work. 展开更多
关键词 Moltipole mixing ratio mean lifetime gamma widths transitions strength transitions probabilities.
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Determination of Credit Risk Charges for Malaysian Life Insurance Industry: An Application of Default Probability
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作者 Norhana Abd Rahim Fauziah Hanim Tafri 《Journal of Modern Accounting and Auditing》 2012年第3期435-444,共10页
The objective of this paper is to measure the risk charge for credit risk as one of the components in the risk based capital of the capital adequacy framework. Currently, the risk charge for credit risk is measured by... The objective of this paper is to measure the risk charge for credit risk as one of the components in the risk based capital of the capital adequacy framework. Currently, the risk charge for credit risk is measured by referring it to the credit rating of a company. Following the subprime crisis in 2007, the markets start to question the soundness of the credit rating issued as it has resulted in an inadequate risk charge. Therefore, this study attempts to determine the risk charge for credit risk using the probability of default (PD) for life insurers in Malaysia. The credit risk has been categorized into several types of debt obligations. Whereby, the KMV-Merton model has been used to measure the distance to default and estimate the probability of default. The estimation of default probability is based on the movement in the price index of several debt obligations. The price index of debt obligations from year 2004 to 2009 is collected inclusive of the subprime crisis period during the crisis period. Therefore, Malaysia insurance industry is The results found that the risk charges are lower not affected by the subprime crisis in 2007. 展开更多
关键词 credit risk risk charge probability of default (PD) KMV-Merton
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Consistent Criteria for checking Hypotheses
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作者 Laura Eliauri Malkhaz Mumladze Zurab Zerakidze 《Journal of Mathematics and System Science》 2013年第10期514-518,共5页
This paper we study a consistent criterion for checking Hypotheses. Given definition of consistent criterion for checking hypotheses for family probability measures which were defined by Z. Zerakidze (see 5). We pro... This paper we study a consistent criterion for checking Hypotheses. Given definition of consistent criterion for checking hypotheses for family probability measures which were defined by Z. Zerakidze (see 5). We prove the necessary and sufficient conditions are obtained for the existence of consistent criteria of hypotheses. For example we clearly build of a consistent criteria for checking hypotheses. 展开更多
关键词 Consistent criterion ORTHOGONAL SEPARABLE hypotheses.
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期刊信息的概率权数综合评价模型及应用 被引量:1
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作者 丁岳维 雷蕾 +1 位作者 李苏 屈清慧 《情报杂志》 CSSCI 北大核心 2010年第1期82-85,共4页
在研究现有文献的基础上,发现期刊信息的定量评价模型大部分是利用统计评价指标进行分析与研究,采用综合定量评价模型甚至概率测定权数评价模型研究的还不多见。因此,以2003-2007年版《中国科技期刊引证报告》收录药学期刊的统计资... 在研究现有文献的基础上,发现期刊信息的定量评价模型大部分是利用统计评价指标进行分析与研究,采用综合定量评价模型甚至概率测定权数评价模型研究的还不多见。因此,以2003-2007年版《中国科技期刊引证报告》收录药学期刊的统计资料为信息样本,提出概率测定权数建立综合评价模型,做了量化的实证研究分析,以此模型评价中国药学期刊的质量和影响力,结论与医药类15种核心期刊的资料基本吻合。建立的模型和研究方法可为期刊信息的综合定量评价参考应用。 展开更多
关键词 评价指标 综合定量评价模型 概率测定权数 信息样本
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PRICING CONVERTIBLE BONDS AND CHANGE OF PROBABILITY MEASURE
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作者 JIA Zhaoli ZHANG Shuguang 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2013年第6期968-977,共10页
The changes of numeraire can be used as a very powerful tool in pricing contingent claims in the context of a complete market.By using the method of numeraire changes to evaluate convertible bonds when the value of fi... The changes of numeraire can be used as a very powerful tool in pricing contingent claims in the context of a complete market.By using the method of numeraire changes to evaluate convertible bonds when the value of firm,and those of zero-coupon bonds follow general adapted stochastic processes in this paper,using Ito theorem and Gisanov theorem.A closed-form solution is derived under the stochastic volatility by using fast Fourier transforms. 展开更多
关键词 Convertible bonds European option numeraire changes stochastic volatility model.
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