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国外缄默知识研究述评

外国教育研究 2005年第9期32卷 16-20页

作者：吴晓义广东金融学院社会科学部广东广州510521

缄默知识既是近年来国外学术研究领域的热点问题,也是人类知识传承和学校教育改革面临的难点问题。为推进我国相关领域的理论研究和实践探索,文章在介绍国外缄默知识研究的历史进程和基本情况的基础上,对其中具有代表性的研究成果作了... 详细信息

缄默知识既是近年来国外学术研究领域的热点问题,也是人类知识传承和学校教育改革面临的难点问题。为推进我国相关领域的理论研究和实践探索,文章在介绍国外缄默知识研究的历史进程和基本情况的基础上,对其中具有代表性的研究成果作了较为详细的分析和评价。

关键词：国外缄默知识教育科学技术

Relationship Between Vegetation Restoration and Soil Microbial Characteristics in Degraded Karst Regions: A Case Study

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Pedosphere 2011年第1期21卷 132-138页

作者： WEI Yuan YU Li-Fei ZHANG Jin-Chi YU Yuan-Chun D. L. DEANGELIS School of Resources and Environmental Management Guizhou College of Finance and Economics Guiyang 550004 (China) College of Forestry Guizhou University Guiyang 550025 (China) College of Forest and Environment Nanjing Forestry University Nanjing 210037 (China) department of Biology University of Maimi P. O. Box 249118 Coral Gables FL 33124 (USA)

The mechanism of vegetation restoration on degraded karst regions has been a research focus of soil science and ecology for the last *** an attempt to preferably interpret the soil microbiological characteristic variation associated with vegetation restoration and further to explore the role of soil microbiology in vegetation restoration mechanism of degraded karst regions,we measured microbial biomass C and basal respiration in soils during vegetation restoration in Zhenfeng County of southwestern Guizhou Province,*** community level physiological profiles(CLPP) of the soil microbial community to were estimated determine if vegetation changes were accompanied by changes in functioning of soil microbial *** results showed that soil microbial biomass C and microbial quotient(microbial biomass C/organic C) tended to increase with vegetation restoration,being in the order arboreal community stage > shrubby community stage > herbaceous community stage > bare land *** trend was found in the change of basal respiration(BR).The metabolic quotient(the ratio of basal respiration to microbial biomass,qCO 2) decreased with vegetation restoration,and remained at a constantly low level in the arboreal community *** of the CLPP data indicated that vegetation restoration tended to result in higher average well color development,substrate richness,and functional *** utilization of specific substrate guilds was highest in the arboreal community *** component analysis of the CLPP data further indicated that the arboreal community stage was distinctly different from the other three *** conclusion,vegetation restoration improved soil microbial biomass C,respiration,and utilization of carbon sources,and decreased qCO 2,thus creating better soil conditions,which in turn could promote the restoration of vegetation on degraded karst regions.

关键词： basal respiratory community level physiological profile functional diversity metabolic quotient microbial biomass C

Common fixed point theorems for a family multivalued mapping in Banach spaces

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Common fixed point theorems for a family multivalued mapping...

2011 6th IEEE Joint International Information technology and Artificial Intelligence Conference(ITAIC 2011)

作者： Zhanfei Zuo department of Mathematics and statistics Chongqing Three Gorges university Wanzhou 404000 P.R.china

Let K be a nonempty closed convex subset of a real reflexive Banach space X that has weakly sequentially continuous duality mapping J for some *** T i:K → K be a multivalued nonexpansive mappings with F:= ∩∞ i=0 F（T i） = which is a sunny nonexpansive retract of K with Q a nonexpansive *** a contraction f on K and {α n },{β n } ∈（0,1）,we consider the algorithm be called multivalued version of the modified Mann iteration x n+1 = β n f（x n） + α n x n +（1 α n β n）y n,where y n ∈ T n x n such that y n+1 y n ≤ H（T n+1 x n+1,T n x n）.

关键词： Multivalued nonexpansive mapping Weakly sequentially continuous duality mapping Common fixed point.

On a robust and effcient maximum depth estimator

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science china Mathematics 2009年第6期52卷 1212-1232页

作者： ZUO YiJun1,2 & LAI ShaoYong1 1 School of Economic Mathematics,Southwestern university of finance and Economics,Chengdu 610074,china 2 department of statistics and Probability,Michigan State university,East Lansing,MI 48823,USA

The best breakdown point robustness is one of the most outstanding features of the univariate *** this robustness property,the median,however,has to pay the price of a low effciency at normal and other light-tailed *** equivariant multivariate analogues of the univariate median with high breakdown points were constructed in the past two *** the high breakdown robustness,most of them also have to sacrifice their effciency at normal and other models,*** affine equivariant maximum depth estimator proposed and studied in this paper turns out to be an *** the univariate median,it also possesses a highest breakdown point among all its multivariate *** the univariate median,it is also highly efficient relative to the sample mean at normal and various other distributions,overcoming the vital low-effciency shortcoming of the univariate and other multivariate generalized *** paper also studies the asymptotics of the estimator and establishes its limit distribution without symmetry and other strong assumptions that are typically imposed on the underlying distribution.

关键词： data depth maximum depth estimator median location estimator breakdown point asymptotic distribution robustness effciency

A Feedback Scheme for Fountain Codes Based Transport Protocol in Space Communications

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china Communications 2015年第8期12卷 62-72页

作者： XING Yanling GE Ning Tsinghua National Laboratory for Information science and technology department of Electronic Engineering Tsinghua University Aerospace Communications and Terminal Application Technologies Engineering Laboratory in Shenzhen

This paper proposed a practical- feedback scheme for fountain codes based transportprotocol in space communications. In the proposed scheme, the sender is signaled by two types of acknowledgment （ACK） *** decoding, packet loss probability isestimated on the receiver side and encapsulated intoa soft ACKand sent to the *** decoding,decoding results are encapsulated into hard ACKsandsent to the sender. There are two contributionsin the proposed scheme： 1. Empl layer calculation instead layer statistics to estimate oying physical of application the packet loss probability of space channel, which can improvethe accuracy and practicality. 2. A cascade overhead-failure probability relationship between the sender and the receiver has been analyzed to help determine the exact numberof packetsneeded byfountain *** show that for space communications,compared with the existing space transport protocols, fountain codes based transport protoeolwith the proposed schemecan not only ensure transmission reliability, but also greatly improvelink utilization.

关键词： fountain code feedback spacecommunication packet loss probabilityestimation transport protocol

The Statistical Research of Human Dynamics on Correspondence

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The Statistical Research of Human Dynamics on Correspondence

2011 International Conference on Modelling,Identification and Control(ICMIC 2011)

作者： Shaocheng Qu is a full professor in Control Systems and communication system at department of Information and technology,Central china Normal university .Qinqin Wang and Li Wang received their Bachelor degree in 2011 and 2010,respectively,at department of Information & technology,Central china Normal university,P R china.Now they are studying toward M.Sc.in department of Information and technology,Central china Normal university,Wuhan,china.

Studies on temporal statistics of human behavior not only contribute to a profound understanding of complexity of socio-economic system and human beings,but they are also crucial for better resource allocation and pricing plans for phone companies,to improve inventory and service allocation in both online and street *** recent years,some statistical research on human correspondence has proven that the inter-event time distribution satisfies a power law,but the judgment for scaling exponent is still *** this paper,we collect communications data from Sui Gu and Van Gogh and find the inter-event time distribution fits a power law with exponent 1.5,which is in accordance with Barabási's *** addition,the inter-event time distribution about two men's letters for 5 consecutive years also follows Power-law distribution with the same exponent.

关键词： human dynamics,Power-law distribution,inter-event time distribution

The Reliability of a Stochastically Complex Dynamical System

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The Reliability of a Stochastically Complex Dynamical System

第一届动力系统与现代应用数学国际会议

作者： Wei LIa Jiaorui LIb Weisheng CHENa Wei XUc (a department of Mathematics Xidian university Xi’an Shaanxi 710071 P. R. china) (b School of statistics Xi’an university of finance & Economics Xi’an 710061 P. R. china) (c department of Applied Mathematics Northwestern Polytechnical university Xi’an Shaanxi 710072 P.R. china)

First-passage failure is an important issue in the theory of dynamical system, which determines whether the system is safe and reliable or destroyed. Therefore, taking a suitable control force to control first-passage failure is very significant for the systems. In this paper, we studied the reliability on a stochastically complex dynamical system by using stochastic averaging method. The reliability results show that reliability function is a monotonously decreased with respect to time and the reliability of system is relatively worse with external and parametric white-noise excitations. Bang-Bang feedback control is taken to improve the reliability for the original system. Numerical results display that even a small control force can highly enhance the reliability of the original system.

关键词： Complex Dynamical System Reliability Stochastic Averaging Method

The Relative Diathesis Evaluation Research Based on Balanced Scorecard

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The Relative Diathesis Evaluation Research Based on Balanced...

2010 2nd IEEE International Conference on Advanced Management science（IEEE ICAMS 2010）

作者： Bin Xu School of Accountancy Central university of finance & Economic P. R. china Beijing 100081 Jing Yu Research Center on Fictitious Economy & Data science CAS P. R. china Beijing 100190 university of Graduate china Academy of science P. R. china Beijing 100190 Jinqin Sun School of Management and Engineering Central university of finance & Economic P. R. china Beijing 100081

In this paper, a new idea on the enterprise relative diathesis evaluation approach has been proposed based on the other evaluation theory and approach, which is based on balanced scorecard and together with diathesis-decided dynamic principle, and thus combined the operation surroundings with the enterprise relative diathesis evaluation effectively. Then the evaluation model is proposed with the weighted-numbers decided by the entropy. In the last, a positive research about information public listed corporation has been employed during 2000 through 2006, and illustrating the application of relative diathesis evaluation model.

关键词： Balanced Scorecard relative diathesis evaluation surveyor’s pole entropy

Design of Purchase-Sales-Inventory Business Software Based on Excel

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Design of Purchase-Sales-Inventory Business Software Based o...

2012 National Conference on Information technology and Computer science

作者： Wang Shunjin Accounting and finance department of Chongqing College of Electronic Engineering Chongqing,china

Purchase-sales-inventory software is a common tool of small business enterprise information and can be designed by using *** paper focuses on the idea of "fool" business software design with Excel sequence,record pointer and ActiveX control,and introduces the skills in invoking development tool,setting Macro security,using name and sequence,using Excel function,eliminating loop computation,designing record pointer,and designing "Reset" and "Confirm" control buttons in software design.

关键词： Software design ActiveX control VBA code record pointer purchase-sales-inventory