沉管隧道水下最终接头施工技术初探

简述了沉管隧道水下最终接头施工技术的应用现状，结合具体隧道工程实例，从外模工程、混凝土结构两方面介绍了最终接头施工技术，表明了该技术具有运用价值。     

A goal-striving life event and the onset of hypomanic and depressive episodes and symptoms: Perspective from the Behavioral Approach System (BAS) dysregulation theory.

On the basis of the behavioral approach system (BAS) dysregulation theory of bipolar disorder, this study examined the relation between occurrence of a BAS activation-relevant life event--goal striving--and onset of hypomanic and depressive episodes and symptoms. In particular, the authors examined the relation between preparing for and completing final exams (a goal-striving event) and onset of bipolar spectrum episodes and symptoms in college students with bipolar II disorder or cyclothymia (i.e., "soft" bipolar spectrum conditions). One hundred fifty-nine individuals with either a bipolar spectrum disorder (n=68) or no major affective psychopathology (controls; n=91) were further classified on the basis of whether they were college students (i.e., completed final exams). Consistent with the BAS dysregulation theory, preparing for and completing final exams was associated with an increase in hypomanic but not depressive episodes and symptoms in individuals with a soft bipolar spectrum diagnosis. Furthermore, self-reported BAS sensitivity moderated the presence of certain hypomanic symptoms during final exams. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

实行工程预决算审计 严格控制投资成本

针对目前企业固定资产投资中存在的投资超概算问题 ,论述了实行工程预决算审计的必要性 ,结合江西铜业股份有限公司的实践阐明了如何实行工程预决算审计 ,以达到提高投资效益的目的。     

20CrMo棒材带状组织的控制研究

通过Gleeble-1500热模拟机对20CrMo轧材精轧阶段轧制过程及冷却过程的模拟,研究了终轧温度、冷却速度对室温组织的影响,分析了形成带状组织的条件,最终得出了理想室温组织的终轧温度和冷却速度。     

静压桩终压力及单桩竖向承载力的相关性

以苏南软土地区的静压桩施工实测资料为依据,着重分析了静压桩的终压力与单桩竖向承载力之间的相互关系,并按照静压桩的入土深度,提出两者之间的相关性估算方法,为静压桩的安全、合理施工提供参考。     

水泥混凝土路面板固化温差对翘曲和应力的影响

实测硬化中水泥混凝土路面板内的温度分布,确定混凝土的终凝时间,提出固化温差及有效温差的计算方法,并计算两种施工环境条件下路面板的固化温差和有效温差,进行固化温差对板的翘曲和应力影响分析计算。研究结果表明：春季和秋季施工在水泥混凝土路面板中产生负的固化温差,将会导致路面板在1 d中的大部分时间处于板中脱空的状态,在板中临界荷位处板底产生拉应力,而采用小尺寸板,相比较大尺寸板更能降低路面板翘曲及耦合应力,降低疲劳破坏。     

含碳球团—铁浴熔融还原法关键技术的应用基础研究

系统研究了以非焦煤粉和铁精矿粉为基础的含碳球团－铁浴熔融还原新流程的关键技术。解决了冷固结含碳球团高温强度问题，提出了含碳球团自还原动力学模型，再氧化机理和提高球团预还原速度，抗氧公有力的技术措施和参数，研制出了具有高配碳量，高强度，高自还原速度，高预还原速度，高抗氧化能力的新型含碳球团。同时，研究了含碳球团在铁浴中熔化还原动力学参数，优化得到了控制还原速度，终还原率，熔渣中最低ＦｅＯ含量，泡沫渣     

统考下的“计算机组成原理”教学方法探讨

"计算机组成原理"课程是计算机专业本科阶段一门极其重要的课程,历来是计算机专业教学中的重点,同时也是考研统考中所占比例很大的一门课程。文章分析"计算机组成原理"课程的考研大纲及其考点分布,探讨"计算机组成原理"教学与学生能力培养之间的关系,提出一种研究性的教学方法。根据笔者的长期从事计算机硬件教学的经验,针对统考下的计算机组成原理教学方法进行了一些有益的探讨。实践证明,这样的方法也的确收到了良好的效果。     

ADRC Law of Spacecraft Rendezvous and Docking in Final Approach Phase

This article addresses the high-precision coordinated control problem of spacecraft autonomous rendezvous and docking, which couple the relative position and attitude in the final approach phase. The coupled dynamics equations of the tracking-target spacecrafts is derived by using dual quaternions. Then, a cascade Active Disturbance Rejection Controller is proposed, by which the extended state observer and nonlinear error feedback law is designed, the virtual value on which the actual control volume tracking is calculated to ensure the finite time convergence of the relative position and attitude tracking errors in spite of parametric uncertainties and external disturbances. Finally, numerical simulations are performed to demonstrate that the proposed approaches, which can avoid the coupling effect and restrain the interference, can track the target spacecraft in a relatively short period of time, and the control precision can satisfy the requirements of docking.     

二种夹套结构聚酯终缩聚釜有限元分析比较

为考察和比较整体夹套结构与半圆管夹套结构聚酯终缩聚釜内筒的径向变形,用ANSYS进行设计工况下的强度和变形分析．结果表明,虽然整体夹套结构聚酯终缩聚釜耗材较多,但内筒径向变形较小．建议采用T形加强圈提高半圆管夹套结构聚酯终缩聚釜中内筒刚度,减小内筒径向变形．