汽车电控系统线路图的使用

随着汽车上普遍采用电控系统,电控系统线路图已成为汽车电控系统维修重要依据.以桑塔纳2000型时代超人电控燃油系统为例,介绍了电控系统线路图的使用方法,并阐述了电控系统线路故障回路的判断方法.     

神经网络方法对非线性系统的作用

本文对非线性系统研究方法作了简要介绍，重点分析了神经网络方法在非线性系统研究领域应用的可能性和方法，指出神经网络在非线性系统中的广阔前景     

变系数线性微分方程组求解一例

本文补充和完善了［1］中关于交系数线性做公系统的求解方法,指出了该方法的局限性,利用［1］中方法,得到了系统：的通解表达式,并阐明了该系统的重复性。     

复杂系统方法在教育研究中的运用探索

本文在介绍了复杂系统方法的主要内容和特点的基础上探讨教育研究中运用复杂系统方法的由来、依据和主要方式,着重探讨了三类复杂系统即耗散系统、复杂适应性系统和开放的复杂巨系统的共同的特点：开放性、非线性,并以此为例说明复杂系统方法可在思想指导、复杂系统仿真技术、研讨厅体系等方面综合运用于教育研究中,并且可结合其他方法如“被研究者自述”等在实践中更好地解决复杂性难题。     

系统备课方法创立的理论基础

本文认为,系统理论的整体观点,科学知识的整体化,自然界的统一性,重视人的因素等基本观点和整体功能大于并优于部分功能之总和的基本原理完全适用于指导教师系统备课.基于此,本文研究了我国古代的系统思想对创立系统备课方法的启示,一般系统论的产生,系统理论向社会的各个领域的广泛渗透,系统的定义,系统备课方法的哲学依据,教师系统备课方法中的系统特征,系统备课方法的概念.     

浅析工程力学实验试题库系统的设计

阐述了工程力学实验课程建设中的试题库系统的设计方法,介绍了系统架构、组卷算法及其流程、系统功能等关键技术及其实现方式.试题库系统采用合理的数据库设计方法,运用面向对象的程序设计技术,实现了试题库的实时管理;系统利用遗传算法提高了组卷的成功率和速度.     

一个新的混沌系统的自适应控制与同步

对于一个新的混沌系统,分析它的稳定性,采用自适应的方法实现了混沌系统的同步。用Lyapunov第二方法从理论上证明了该同步方法的有效性,接着又用Mlatlab软件对该同步系统进行仿真验证了同步方法的有效性,结果表明这种方法是快速有效的。     

利用单片机系统的显示功能设计多功能键盘

介绍了利用单片机系统的显示功能设计多功能键盘的方法,此方法可以普遍应用在单片机接口资源紧张的系统中,并结合开发过程,详细的阐述了键盘系统硬件组成和软件的设计方法。     

用OOA方法做工程软件系统设计

讨论了系统建模思想与建模方法。采用OOA方法 ,以三峡安全决策支持系统为例 ,构造了系统的静态模型、动态模型和功能模型 ,以此完成了系统的总体功能设计。     

采用模糊脉冲控制实现离散混沌系统的同步

利用模糊脉冲技术研究一类离散混沌系统的同步控制问题,建立离散混沌系统的离散T-S模糊动态模型,结合脉冲微分方程稳定理论,提出了一种新的离散混沌系统同步的模糊脉冲控制方法,把该方法应用到Henon映射系统中,仿真结果表明了该方法的有效性.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

胡主席在印度,我却在中国

Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer.