独立CAN器件SJA1000的应用

CAN总线已在变电站自动化系统中得到了广泛应用 ,而SJA10 0 0作为PHILIPS公司最近推出的独立CAN器件也已得到了广泛关注。本文简要介绍了SJA10 0 0的基本原理和功能 ,并给出了SJA10 0 0的典型硬件连接原理图及初始化程序和部分通信程序     

RuCl2[P(C6H5)3]2(NH2CH2CH2NH2)催化苯乙酮加氢反应的研究

优化了以RuCl2[P(C6H5)3]2(NH2CH2CH2NH2)作催化剂催化苯乙酮加氢制备α-苯乙醇的反应条件,考察了反应温度、反应压力、碱的用量及不同的碱对反应的影响,得出了一个较好的反应条件.     

北仑区政协提案工作的新做法

文章从加大提案工作宣传力度、加大领导力度、加大督办力度三方面总结了近年北仑区政协提案工作的新做法、新举措     

EDF tests of goodness of fit for transform-both-sides models

Very often in regression analysis, a particular functional form connecting known covariates and unknown parameters is either suggested by previous work or demanded by theoretical considerations so that the deterministic part of the responses has a known form. However, the underlying error structure is often less well understood. In this case, the transform-both-sides (TBS) models are appropriate. In this paper we generalize the usual TBS models and develop tests to assess goodness of fit when fitting TBS or GTBS models. Parameter estimation is discussed, and tests based on the Cramér-von Mises statistic and the Anderson-Darling statistic are presented with a table suitable for finite-sample applications.     

Macroeconomic conditions, institutional factors and demographic structure: What causes welfare caseloads?

Some of the possible determinants of changes observed in welfare caseloads are analysed in this study. The paper attempts to explain variations in welfare caseloads on the basis of four different factors: macroeconomic conditions, interactions with other income maintenance programmes, changes in the programme's parameters and changes in the demographic structure. Different models are tested by applying time series techniques. The data employed are of an administrative nature and cover the whole period that the Madrid programme has been in operation. The results show that the effects of both unemployment and institutional variables are strong and significant. Macroeconomic effects on caseloads could be offset or reinforced by changes in unemployment protection and reforms of the programme's parameters. The significant effects found for the share of lone-parent applicants also show that demographic shifts could shape the trends of welfare rolls regardless of the changes in unemployment or the implementation of institutional reforms. The authors would like to thank Juan Gabriel Rodríguez, Minoru Kunizaki, Miguel Angel Malo and three anonymous referees for their comments and suggestions. Financial and technical support from the Spanish Institute for Fiscal Studies, the Inter-ministerial Commission on Science and Technology (SEC 2001-0746) and the Social Services Department of the Madrid Government is also gratefully acknowledged. Responsible editor: Christian Dustmann.     

C—代数的特征矩阵的性质

本主讨论了C-代数的特征矩阵的性质,并获得了求特征矩阵的逆的一个方法。     

以C语言为主线整合数字化技术课程群

文章阐述了以C语言程序设计方法为主线,将《C语言程序设计》、《EDA技术及应用》(EDA—E lec-tron ic Design Autom ation)、《虚拟仪器》(VI—V irtual Instrum entations)、《DSP技术与应用》(DSP—D igital S ig-nal Processor)等四门具有典型数字化特征的课程进行有机融合,以形成数字化专业技术课程群的思路、方法和措施。论述了课程的地位和可融合性、课程相关技术的先进性、整合与建设的必要性和可行性,提出了建设校级一类课程和省级优质课程的目标和相关措施。     

论《海商法》中实际承运人的相关法律问题

实际承运人是海上货物运输实践中的重要当事方 ,由于《海商法》对实际承运人的法律界定很不明晰 ,造成了实践中的混乱。本文以实际承运人的概念阐述为基础 ,对多种情况下实际承运人识别问题进行了划分 ,并探讨了实际承运人责任认定的相关法律问题。     

克孜尔石窟年代研究和碳十四测定数据的应用

本文介绍了克孜尔石窟年代分期的几种意见,碳十四测定为克孜尔石窟年代分期研究开辟了新的途径。科学技术的发展、科学测定方法的进步和完善,是解决石窟分期问题的希望所在。     

如何培养学生的软件开发经验

计算机软件的发展日新月异,对于初学者来说应该如何下手,这就需要教师们组织好教学内容和开设课程的顺序,教会学生们计算机软件编程的入门方法,培养他们软件编程的好习惯,丰富同学们实际开发软件的经验,为学好计算机打下良好的基础。