THERMODYNAMICS AND PHASE EQUILIBRIUM OF Cu－Y－O，Cu－Y－S，Cu－Y－O－S LIQUID SOLUTIONS

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网络磁盘阵列中基于任务排队的多用户请求动态调度策略

在存储系统中,底层I/O调度策略十分重要,它决定了整个存储系统的效率.一个良好的调度策略可以有效地提高系统的性能.结合网络磁盘阵列的工作特点,提出了一种基于任务排队的动态调度算法,其基本思想是充分利用多个网络用户的请求数据在网络磁盘阵列上的空间连续性,最大限度地减小磁头寻道延迟和旋转延迟,从而降低系统的响应时间.     

并行测试技术及在导弹测试中的应用研究

并行测试技术是将并行处理技术引进自动测试领域形成的一种先进的测试技术和方法,拥有减少测试时间、降低测试成本的强大优势,正成为研究热点之一;首先介绍了并行测试的基本概念,分析对比了几种实现并行测试的软硬件方法及基本结构体系;然后结合导弹传统串行测试方法的不足及未来战场快速测试的要求,设计了一种导弹的网络化并行测试的基本结构;最后,针对并行测试技术在导弹测试中的应用,提出了需要注意的任务调度、死锁预防及并行测试接口设计等几点关键技术和导弹并行测试系统组建原则。     

一种新结构的DM-multipath与动态负载平衡

对于存储设备,Linux 在多路径 I/O方面主要有两种类型的解决方案：位于I/O调度器之上的顶层方案(BIO映射器)和位于底层的子系统具体方案(如IDE,SCSI)。因为实施它们的所在存储堆栈中的位置不同,每种方案各有优势。通过与第一种方案比较,介绍具体硬件子系统之上的另一种解决方案,新结构中重点实现移动内核当前多路径层——多路径设备映射器 (dm-multipath)到I/O调度层之下,这种方案能够有效地支持动态的负载平衡。     

2D Bi2O2Te Semiconductor with Single-Crystal Native Oxide Layer

Following logic in the silicon semiconductor industry, the existence of native oxide and suitable fabrication technology is essential for 2D semiconductors in planar integronics, which are surface-sensitive to typical coating technologies. To date, very few types of integronics are found to possess this feature. Herein, the 2D Bi₂O₂Te developed recently is reported to possess large-area synthesis and controllable thermal oxidation behavior toward single-crystal native oxides. This shows that surface-adsorbed oxygen atoms are inclined to penetrate across [Bi₂O₂]_n²ⁿ⁺ layers and bond with the underlying [Te]_n²ⁿ⁻ at elevated temperatures, transforming directly into [TeO₄]_n²ⁿ⁻ with the basic architecture remaining stable. The oxide can be adjusted to form in an accurate layer-by-layer manner with a low-stress sharp interface. The native oxide Bi₂TeO₆ layer (bandgap of ≈2.9 eV) exhibits visible-light transparency and is compatible with wet-chemical selective etching technology. These advances demonstrate the potential of Bi₂O₂Te in planar-integrated functional nanoelectronics such as tunnel junction devices, field-effect transistors, and memristors.     

纳米Fe_2O_3作为润滑油添加剂的摩擦磨损性能

采用烧结方法制备得到纳米α-Fe_2O_3,利用X射线衍射仪(XRD)和透射电镜(TEM)对样品进行了表征,研究了纳米α-Fe_2O_3作为液体石蜡添加剂的摩擦磨损性能。结果表明,添加纳米添加剂后,润滑油摩擦系数改变不明显,但磨损率显著降低。磨损率与纳米α-Fe_2O_3添加剂的表面积和添加量密切相关,当纳米材料的表面积为47m~2/g时磨损率最低,磨损率值降低为3.78×10~(-15) m~2/g;添加量为1.0wt%,润滑油磨损率最低。     

Prevalence and personality correlates of Facebook bullying among university undergraduates

The purpose of the present study was to examine the prevalence of cyber-bullying through Facebook in a sample of 226 Greek university undergraduates, and to explore whether big five personality characteristics, narcissism, as well as attitudes toward Facebook, technological knowledge and skills were predictive of such behavior. Participants completed a self-report questionnaire measuring the above constructs. Results indicated that almost one third of the sample reported Facebook bullying engagement at least once during the past month, with male students reporting more frequent involvement than females. Bullying through Facebook was predicted by low Agreeableness and more time spent on Facebook only for males, whereas for females none of the studied variables predicted engagement in Facebook bullying. Findings are discussed in terms of prevention and intervention strategies.     

PLC在高浓度冲稀自动控制系统的应用

本文在介绍高浓度冲稀自动控制系统的工作原理、特点、系统调校及日常维护要点的基础上,探讨了PLC在这种类型的系统中的应用。     

基于.NET2.0串行端口资源的PC机与FCS实验系统串口通信的设计

.NET2.0新增Serial Port类为串口通信提供了强大的工具。该文重点阐述将DCS改造为FCS实验装置后,上位机是如何利用这一工具实现与控制系统之间的数据通信,从而证明采用C#串行通信类可以使串行通信程序的设计具有更强的实用性和灵活性,使串口数据传输变得更方便和可靠。     

“老无所依”:奥康纳小说中的老人形象再探

奥康纳小说刻画了一群在社会转型中丧失财产和地位的南方老白人,他们的物质生活每况愈下,精神上经历着错位和失落,终日沉醉在过往的幸福时光之中,对当下世风大加批评。这种美化过去生活、消极反抗现实的处世态度使得他们的生存日益边缘化,甚至还会引发极为惨重的后果。对那些固守传统、恋旧讽今的长者,奥康纳在善意嘲讽的同时,也表达出真挚的理解和同情。