企业影响政府/行业的能力与新产品绩效关系研究

 转型时期的中国,高度不确定的环境往往是因为政府政策和干预行为的连续变化以及高度的行业竞争带来的。基于动态能力的资源观点,企业影响政府的能力和影响行业的能力是企业适应外部环境的动态能力之一,这两种能力可以降低政治环境和市场环境的不确定性,从而提高新产品开发绩效;并且政府干预对两种能力与新产品绩效的关系具有一定的调节作用。应用分层多元回归模型,对陕西省178家企业的问卷调研数据进行分析。研究结果表明,这两种能力对新产品绩效都有积极的促进作用,且两者的交互也将促进新产品绩效;政府干预对两种能力与新产品绩效关系的调节是倒U型的,即适量的政府干预可以促进两种能力与绩效之间的积极关系,而当干预过多,则降低了企业的柔性,削弱了企业对环境的敏感度,从而对两种能力与新产品绩效之间的积极关系产生消极作用。     

用场效应管放大电路测量可逆电池的电动势

本文介绍应用场效应管放大电路来测量电池电动势的新原理与新方法.该测量原理与方法简单、实用,不但更新了传统的测量原理,而且也提高了测量精度和学生的学习兴趣及动手能力.     

Young Children, Questions and Nonfiction Books

This article discusses the use of nonfiction as a powerful antecedent for success in the types of reading required later on in the intermediate grades. Recent trends in informational (nonfiction) books, values of bringing together young children, and informational books and criteria for selecting high quality informational books are identified. Several question types are highlighted and incorporated into three strategies for bringing together young children, informational books, and questions. Also, a bibliography of high quality informational books is provided.     

Student performance in Introductory Microeconomics at an African open and distance learning institution

Abstract

Introductory Microeconomics as offered by the University of South Africa (Unisa) is a compulsory module for a Bachelor of Commerce, a Bachelor of Accountancy or a Bachelor of Administration degree. Success or failure in Introductory Microeconomics directly impacts on the number of years students take to complete their degrees, and eventually also on the throughput subsidy to Unisa.

A number of exceptional institutional rules and regulations impact on the teaching of Introductory Microeconomics at Unisa, as an open and distance learning (ODL) institution. Unlike many residential institutions, Unisa does not require Mathematics at school level for registration for Introductory Microeconomics. This article reports on research done at Unisa to determine how student success in Introductory Microeconomics is influenced by variables such as race, home language, whether the students passed mathematics at matriculation level, matriculation exemption1 1. Matriculation (“matric”): In South Africa, the final school exit certificate, which is awarded with or without university exemption (“endorsement”). , gender and the passing of assignments. Although this research confirms previous research that home language and age do impact on student success, it finds that the successful passing of assignments has the greatest impact on student success.     

信息化会计与电子凭证业务

信息化会计工作的初始阶段是由电子凭证制作业务开始的。促进信息化会计进程走向中国经济纵深领域的信息化技术难点,是信息化会计的工作系统标准化问题越来越显得突出。本文对信息化会计的电子凭证业务及标准化工作做了一些探讨,有利于扩大中国信息化会计实践的运用范围。     

关于叶燮《原诗》笺注的几个问题——《原诗笺注》前言

叶燮《原诗》作为古典诗学的重要文本,迄今虽已有两种评注本,但在还原其诗学语境,揭示其话语背景——大背景是明末到康熙前期的两次宋诗潮带来的唐宋之争,小背景则是昊中地区叶燮与汪琬两家讲学宗旨不同带来的诗学之争——方面。还有不少工作可做。文章就笔者笺注所及诸问题,对《原诗》整理的要点和体例作了说明。同时对学界关于《原诗》写作过程及理论渊源的新说,提出了自己的看法。     

Dimensions of Socio-economic Status and their Relationship to Mathematics and Science Achievement at Individual and Collective Levels

Applying two-level structural equation modelling techniques, the current study examined the dimensionality of socio-economic status (SES) and its relationship with mathematics and science performance at student and school levels. Data were drawn from population 2 (13-year-olds) of 17 countries in the Third International Mathematics and Science study (TIMSS). A set of items about the ownership of household materials was used to measure the dimensions of SES. For most of the countries, a general economic dimension and a cultural dimension were identified at the student level. The cultural dimension had the greatest impact on students' mathematics and science achievement. At the school level, however, only a general economic dimension was found in most countries. This dimension was interpreted to represent community wealth. It was found to be highly related to school mean maths-science achievement, except for the countries where an additional cultural dimension is identified. This cultural dimension can be interpreted as the community cultural resources and atmosphere, and is strongly related to average school mathematics and science achievement. The current study confirmed that the ownership of a set of household materials can be used as SES indicators in exploring its multifaceted feature at both individual and school levels. A similar model structure is found in different countries by applying these indicators, despite the fact that the content of the set of household possessions is different. The findings show that the latent structure of SES at individual level is different from that at the school level, and that SES dimensions have different effects on mathematics and science achievement at individual and school levels.     

用Authorware构建多媒体软件框架的三种方法

文章介绍了在Authorware多媒体软件中实用性很好的组建整体结构的三种方法：常见交互图标应用法、导航图标应用法、文字超级链接法。将课件中的多种信息模块化地组织在一起，为课件制作者带来很大的方便性和灵活性，且在媒体软件制作方面有着广泛的应用。     

哲学批判概念阐释

从批判的前提,批判的依据或尺度,批判的实质内容,批判的目的,批判的基本特性等层面,对批判概念作了初步的阐释。在此基础上,讨论了批判和哲学的关系,认为,批判是哲学的本性,批判精神是哲学的本真精神;马克思主义哲学无疑是当代最具深度的批判性哲学。在今天,阐扬哲学主要是马克思主义哲学的批判性和批判精神,具有特别重要的现实意义。     

2001 年至2010 年三峡库区重庆段植被活动时空特征及其影响因素

利用2001年-2010年的MODIS陆地产品MODl3A3NDVI数据对三峡库区重庆段近10年来的植被生长状况及其影响因素进行分析,结果表明：①三峡库区重庆段东部、中南部中高山区NDVI较高,西部川东平行岭谷区,长江干流及其支流谷地NDVI较低;地形和人类建设活动成为主要的影响因素;②近10年来三峡库区重庆段植被活动总体上呈逐渐增强的趋势;③研究区植被活动出现极化的趋势,植被稀疏的区域植被活动进一步减小,植被茂密的区域植被活动保持稳定或增强,夏季最为明显;（D研究区6种植被类型中,阔叶林的NDVI最高,为0．6904;水生植被的NDVI最低,为0．5710。草甸和灌丛、灌草丛两种植被类型增长最为迅速,分别为0．6％和0．48％;⑤地形、坡度和地形起伏度是影响三峡库区重庆段植被生长状况最为重要的因素,三个因素从根本上决定了植被的空间分布与变化轨迹。其中,地形起伏是坡度与地形起伏度形成的充分条件,成为最根本的决定性影响因素,同时,人类活动已经成为该区植被退化的主要因素。