从中国文学史的背景看赵树理的“三农”文学

自《诗经》始,中国文学素有"兴农"、"乐农"、"悯农"的传统,尤其是五四新文化运动以来,描写农业、农村、农民的"三农"文学在表现农民苦难、农村凋敝、乡村批判、农民的觉醒与反抗、农民进城等五个方面有了长足的发展。在此背景下,赵树理创作的个性特征可以得到清晰的体认:始终立足于黄土地,与农村、农民保持着血脉相连的关系;致力于表现农村错综复杂的社会关系,表现农业生产方式、乡村社会结构的变迁以及这一过程中农民的命运与心态的变化;反映出带有晋东南特征的农村社会伦理状况,表明了国民性批判线索的历史性超越;执著地追求乡野风格,其作品带有浓郁的乡土趣味。赵树理是现代文学史上从精神内涵到文体形式、审美风格整体上最能代表农民的作家。赵树理对于当今文学创作仍有启迪意义。     

A Specification—Based Case Study from Test Class Framework

Testing is a standard method for verification of software performance.Producing efficinet and appropriate test case is an important aspect in testing.Specification-based testing presents a method to derive test data from software specification.Because of the precision and concision of specification.the test data derived from specification can test the software efficiently and entirely.This paper demonstrates a test class framework(TCF) on a file reading case study,specifiec using Z notation,This class framework defines test case sets,providing structure to the testing process.Flexbility is preserved so that many testing strategies can be used.     

Federated Search Tools

Summary

The emergence of federated search tools for the library market represents a significant step toward the longstanding goal of a common searching interface in the reference environment. These systems aim to provide integrated access to library resources of all types. This article describes and evaluates federated search tools from four vendors. It suggests criteria that may be useful for libraries attempting to compare and contrast this type of access tool.     

Z350 纳米树脂修复前牙切角缺损的临床观察

为探讨使用Z350纳米树脂修复前牙切角缺损的疗效,将100例患者220颗患牙需要前牙切角缺损修复的病例随机分为2组,即实验组与对照组。实验组使用Z350纳米树脂修复前牙切角缺损;对照组使用普通复合树脂加自攻自断螺纹钉修复前牙切角缺损。分别于修复完成结束时医患满意度及术后1年复查进行,临床疗效评价。两组修复完成结束后医生和患者满意度差异无统计学意义P〉0．05;修复完成1年后复查两组临床疗效差异有统计学意义P〈0．05。使用Z350纳米树脂修复前牙切角缺损成功率高,医患满意度高,临床疗效好,值得推广。     

四元拟循环码的代数结构

本文研究了Z4上的拟循环码,证明了Z4上的长度为mn的拟循环码等价于一个An的A-子模,其中A=Z4[x]/(xm-1),在m为奇数的时候,所有的拟循环码均可以分解为一些有限数目的循环不可约A-子模的直和。     

基于Z87200的直接序列扩频短波Modem的设计

介绍了一种以直接序列扩频芯片Z87200和AVR系列MCU为核心的短波Modem系统。详细阐述了短波Modem的硬件结构和软件的设计要点,给出了Z87200结合ATmega128具体的硬件电路和关键配置参数。     

《萨拉辛》中“Z”的哲学分析

本文以巴尔扎克《萨拉辛》为背景,从当代哲学的虚无主义思潮出发,从实践、阶级关系、人的解放三个方面对其进行分析,试图在“对象”缺位的状态下,寻找存在的合理性。在实践方面,强调通过人的置之死地而后生的选择,通过灵性的生活实现对罪恶社会的改造。     

Defining and measuring innovation in all sectors of the economy

This paper combines general definitions of innovation applicable in all economic sectors with a systems approach, to develop a conceptual framework for the statistical measurement of innovation. The resulting indicators can be used for monitoring and evaluation of innovation policies that have been implemented, as well as for international comparisons. The extension of harmonised innovation measurement to all economic sectors has implications for innovation research and for policy learning.     

Z变换的应用

阐述了Z变换的基本性质,讨论了它在复变函数积分、递推公式、传递函数三个方面的应用。