时序逻辑电路中两个问题的简化处理

根据数字电路分析和设计的经验 ,对时序电路分析和设计中的两个问题提出了简化处理方案 ,并举例作了详细的讨论     

组合计数的几个典型方法

在研究图的着色和树的计数问题中,遇到大量的复杂的计数问题,这些问题都不能用常规的计数方法来解决.交叉分类、发生函数以及Polya方法是解决这类问题的典型和有效方法,本文以代数学的视角阐述了这些方法的具体应用和解决技巧.     

项目团队绩效考核的新方法-平衡计数法

项目团队考核绩效考核有很多方法,有各方面的优劣,其中平衡计数法的优劣都有,但是从各种比较来看,平衡计数法是对绩效考核相对较好的方法。而且从财务管理、经营管理、顾客满意度、市场占有率等方面来进行绩效考核效果很好。     

用汇编语言程序实现数制转换

主要谈了用汇编语言程序实现十进制数转换为十六进制数和十六进制数转换为十进制数的方法、过程并给出实现数制变换的两个程序段。     

Relating Math Words,Visual Images,and Math Symbols for Understanding and Competence

ABSTRACT

This paper briefly overviews my research in supporting children to learn number concepts by relating number words, research-based visual supports, and math symbols. I first outline my approach to helping children build relationships between the use of concrete materials and the building of abstract concepts. I then focus on two crucial early aspects of building meanings for numbers: (1) understanding break-apart partners such as 5=3+2 that support addition and subtraction with small numbers and children’s moving on to Level 2 counting on and algebraic problem representations, and (2) the use of visual five-groups in understanding numbers 1–1000 and in drawings to support multi-digit computations. The research-based learning path of visual-spatio supports is shown and discussed for each topic, including examples of children’s math drawings for representing word problems algebraically and for multi-digit computations. I have found math drawings to be a key visual support that helps children transition to working meaningfully with symbols and words alone. I close with a brief discussion of the difficulties children have with the number line. This overview can provide a framework within which future research on number learning by individuals with trisomy 21/Down syndrome can proceed.     

How to consider fractional counting and field normalization in the statistical modeling of bibliometric data: A multilevel Poisson regression approach

The numerical-algorithmic procedures of fractional counting and field normalization are often mentioned as indispensable requirements for bibliometric analyses. Against the background of the increasing importance of statistics in bibliometrics, a multilevel Poisson regression model (level 1: publication, level 2: author) shows possible ways to consider fractional counting and field normalization in a statistical model (fractional counting I). However, due to the assumption of duplicate publications in the data set, the approach is not quite optimal. Therefore, a more advanced approach, a multilevel multiple membership model, is proposed that no longer provides for duplicates (fractional counting II). It is assumed that the citation impact can essentially be attributed to time-stable dispositions of researchers as authors who contribute with different fractions to the success of a publication’s citation. The two approaches are applied to bibliometric data for 254 scientists working in social science methodology. A major advantage of fractional counting II is that the results no longer depend on the type of fractional counting (e.g., equal weighting). Differences between authors in rankings are reproduced more clearly than on the basis of percentiles. In addition, the strong importance of field normalization is demonstrated; 60% of the citation variance is explained by field normalization.     

Biblioranking fundamental physics

Counting of number of papers, of citations and the h-index are the simplest bibliometric indices of the impact of research. We discuss some improvements. First, we replace citations with individual citations, fractionally shared among co-authors, to take into account that different papers and different fields have largely different average number of co-authors and of references. Next, we improve on citation counting applying the PageRank algorithm to citations among papers. Being time-ordered, this reduces to a weighted counting of citation descendants that we call PaperRank. We compute a related AuthorRank applying the PageRank algorithm to citations among authors. These metrics quantify the impact of an author or paper taking into account the impact of those authors that cite it. Finally, we show how self- and circular-citations can be eliminated by defining a closed market of Citation-coins. We apply these metrics to the InSpire database that covers fundamental physics, presenting results for papers, authors, journals, institutes, towns, countries for all-time and in recent time periods.     

会计收益与应税收益的比较研究

企业财务会计与所得税会计相分离具有很现实的意义,其能够适应全球化的要求,有利于会计核算,贯彻稳健性原则,能适应多元化的投资主体的需要。对永久性差异和时间性差异的形成以及会计收益与应税收益的比较,有利于企业正确地申报纳税和税务部门准确审核。     

浅谈谨慎性原则在我国的运用

文章从企业生存与发展的需要和对会计信息客观性原则、相关性原则的必要补充等方面来论述运用谨慎性原则的必要性，并通过谨慎性原则在我国的具体运用，来说明谨慎性原则对我国经济产生的双重影响。同时指出了运用谨慎性原则应注意的几个问题。