浅谈单片机系统的可靠性技术

根据单片机系统在工业测控领域中易受干扰而失控的分析，从硬件和软件两方面祥细论述了在单片机系统设计中抗干扰设计的重要性及其方法。     

电火花快走丝线切割DK单片机指令格式的扩展

论述了电火花线切割的控制和格式指令生成的原理,总结了DK单片机型的指令格式的变化规律.有效地扩展了各机型控制系统的功能,降低了生产成本,提高了设备的使用率,为电火花线切割加工提供了一种便捷的途径.     

用映射的观点分析排列组合问题

本文用映射的观点对排列组合问题进行了分析与思考 ,论述了单射个数与满射个数的计算公式及其在一些排列组合问题中的应用     

使用AT89C2051单片机处理红外控制信号

介绍红外编码芯片SM5021A的工作原理,AT89C2051单片机处理红外控制信号的接口电路和软件的设计方法。     

对单变量三次函数求极值的一种简便判别法

本文给出单变量三次函数是否存在极值的一种简便判别法，由稳定点的个数来判别单变量三次函数是否存在极值，并求其极大(小)值。     

从文体学的角度看统一效果理论在《一桶白葡萄酒》中的体现

埃德加·爱伦·坡在19世纪美国文坛占有重要地位,他提出了小说创作方面的“统一效果”理论。本文从文体学的角度探讨坡是如何在《一桶白葡萄酒》中成功运用这一理论实现预期效果的。     

Effects of single‐case reading interventions for students with and at‐risk of emotional and behavioral disorders in grades K–12: A quantitative synthesis

This study examined the effects of reading interventions from single‐case design studies for students with and at‐risk of emotional and behavioral disorders in grades K–12 using a quantitative synthesis. Seventeen studies met the selection criteria of having one more dependent variables meeting what works clearinghouse (WWC) design standards with or without reservations. Although students’ reading performance significantly improved from baseline to intervention phases (p < 0.001), the overall weighted average effect size was weak (Tau‐U = 0.58, 95% confidence interval = [0.54, 0.63]; d = 0.29); smaller effects were found on reading comprehension. Interventions were less effective for students in secondary grades, students with a comorbid disability, and students in substantially separate settings. While no studies meeting the selection criteria were conducted in inclusive settings, the teacher provided interventions were more effective than those provided by researchers suggesting the importance of the student–teacher relationship for reading instruction. Study limitations, areas for future research, and implications for school practices are discussed.     

高校实施国库集中收付制度的认识误区及负面影响

国库集中收付制度作为我国财政改革与友腐倡廉的治本措施,从2001年在我国试点以来就受到各级政府的高度重视与广泛推行,高等学校也被纳入国库集中收付改革的行列。从高等教育“准公共产品”属性与高等学校的“第三部门”组织性质的角度,剖析了目前高等学校实施国库集中收付制度改革过程中存在的几个认识误区,阐述了在高等学校全面实施国库集中收付制度存在的问题及其产生的负面效应。     

In the interests of the child: psychiatry,adoption, and the emancipation of the single mother and her child – the case of the Netherlands (1945–1970)

ABSTRACT

This paper discusses illegitimacy and single motherhood in the postwar period in the Netherlands from the perspective of what was considered to be in the interests of the child: being adopted by a married couple or being raised by the birthmother. It focuses particularly on the impact of psychiatry and the legalization of adoption in 1956 on the emancipation of the single mother and her child. The paper argues that the release of single motherhood and illegitimacy from the moral-religious stigmata of a “sinful fallen woman” and a “damned” or “degenerated” child has, in the Dutch case, not proceeded as a linear process. The process of emancipation toward proud and independent lone motherhood stagnated in the 1950s and 1960s because, when adoption was legalized, illegitimacy became an issue over which scientists, especially psychiatrists, gained the power of expert control. Guided by dynamic psychology and what they conceived of as the best interests of the child they declared single mothers to be victims of “sociopathology” and, consequently, unfit for motherhood. Adoption became the preferred option. This medicalised approach continued to dominate until the reawakening of feminism in the late 1960s made self-sufficient lone motherhood once more a respectable choice.     

单片机课程实验教学改革初探

分析了单片机课程实验教学存在的问题.在实验改革过程中应优化教学内容,将实验分为基础层次、设计层次和综合层次3部分.要打实基础实验,做好设计实验,加强综合实验,同时在理论考核中渗透实验内容,使学生重视实验课.