劳伦斯的小说《公主》

劳伦斯作为英国20世纪杰出的小说家,以描写人尤其是女性的性心理和性意识而闻名。小说《公主》“暴露了现代机械文明和原始主义情结之间的激烈冲突揭示了工业制度对性意识的严重摧残。”悲剧的结尾使人警醒,不要让文明麻痹了真实的情感,不要扭曲本能的渴望,不要拒绝和社会的沟通交流。作者呼吁人们回归真实．自然的本性．使精神和肉体达到平衡。     

刀具磨损在线监测技术的探讨

主要介绍刀具磨损产生的危害,在刀具加工过程中监测刀具磨损变化情况,举例多传感器中电机电流和声发射传感器获取刀具在磨损过程中的准确数据,对刀具的磨损信号进行信息反馈,并及时做出应对处理。     

Ultrasonic tomography and its applications in oilfield

INTRODUCTION Oil and water well is an important basic estab- lishment in oilfields. In many oilfields, there are many different damages in the well’s casing walls after its development for a period of time. They will affect the normal production of damaged wells and adversely influence the neighbouring wells and the block, and threaten steady production. There are different kinds of damages due to multiple problems in the casing walls, for example, corrosion, perforation, decreased diame…     

论线性受控电源的二重性

本文从电源性和负载性两方面来阐述线性受控电源的二重性 .在其电源性的阐述中 ,突破了应用叠加定理的禁区 ,并对同一应用实例从其电源性和负载性两方面阐述 ,得出相互一致、协调的结果 ,进而将受控电源的电源性和负载性辩证地统一起来 ,使受控电源的理论更加完美     

Exit cards: creating a dialogue for continuous evaluation

This study explored the use of Exit Cards, which are formative evaluations of student knowledge and instruction undertaken at every class meeting. Its results are based on Exit Card data from two undergraduate research methods courses. Thematic analysis indicated that students used Exit Cards to communicate (1) what they learned, (2) challenges with course material, (3) experiences with peers, (4) requests for help, (5) challenges with coping, and (6) successes. While the present study is an initial exploration of the use of Exit Cards, it contributes to knowledge on the utilization of informal formative assessments.     

基于支持向量机的数据挖掘技术

随着数据库技术的迅速发展以及数据库管理系统的广泛应用,人们积累的数据越来越多.激增的数据背后隐藏着许多重要的信息,人们希望能够对其进行更高层次的分析,以便更好地利用这些数据.将目前先进的机器学习技术支持向量机,与数据挖掘结合起来,提出了一个改进的支持向量机训练算法,进行了支持向量机自动分类的模拟试验.试验结果显示,新算法的训练速度明显提高,并获得了比较理想的分类结果.     

组成于平行机和批处理机的二阶段混合流水作业问题

A hybrid two-stage flowshop scheduling problem was considered which involves m identical parallel machines at Stage 1 and a burn-in processor M at Stage 2, and the makespan was taken as the minimization objective. This scheduling problem is NP-hard in general. We divide it into eight subcases. Except for the following two subcases： （1） b≥ an, max{m, B} 〈 n; （2） a1 ≤ b ≤ an, m ≤ B 〈 n, for all other subcases, their NP-hardness was proved or pointed out, corresponding approximation algorithms were conducted and their worst-case performances were estimated. In all these approximation algorithms, the Multifit and PTAS algorithms were respectively used, as the jobs were scheduled in m identical parallel machines.     

正循环钻孔灌注桩施工工艺及其工序质量控制

结合正循环钻孔灌注桩的施工实践，介绍了每道作业工序的施工关键，提出了应采取的质量预控措施。     

利用工控组态软件创建电气控制线路动态演示教案的方法

利用工控组态软件创建电气控制线路的原理图,模拟动态演示教案,不但可以直观地表述控制原理,还可以利用工控组态中的编程功能设置故障,使学生能尽快地理解控制线路原理,掌握故障分析和排除的能力。