极点配置广义最小方差控制器

本文对多变量系统给出了一种具有极点配置的广义最小方差控制器。它能够消除稳态偏差且有扰可测干扰能力，可在线亦可离线配置闭环极点，可用于非最小相位系统的控制。     

钢筋混凝土简支深梁受剪承载力的极限分析

本文讨论了钢筋混凝土简支深梁的剪切破坏形态和主要影响因素,假定钢筋和混凝土均为刚塑性材料,引用混凝土双向受压的破坏条件,求出了集中和均布荷载作用下钢筋混凝土简支深梁受剪承载力的塑性解。根据试验结果给出了考虑混凝土强度和剪跨比影响的深梁混凝土塑性有效抗压系数,所获得的理论公式与国内外试验结果符合良好。     

A New Construction of Signature Waveforms for Multi-rate Multi-cell QS-CDMA Systems

In this paper, we propose a new construction of signature waveform sets based on Generalized Loosely Synchronization (GLS) sets and different chip waveforms. The new signature sets are applied into the multi-rate multi-cell quasi-synchronous CDMA (QS-CDMA) system where each cell is assigned with a GLS set; different users in the same cell are assigned with different GLS sequences in the same GLS set; user’s different streams are assigned with the same GLS sequence but different chip waveforms. According to the properties of GLS sets, the inter-cell interference (ICI) and the multi-user interference (MUI) in the same cell can be reduced significantly. The interferences among different streams of the same user are handled by an optimal (or suboptimal) multi-stream detector(s), notice that the multi-stream detector mentioned here is also named as multi-user detector in other references. We compare the performance of the multi-rate multi-cell QS-CDMA system employing the proposed sets with that of multi-rate system employing well-known concatenated orthogonal/PN sets and that of single-rate system employing GLS sets. The results show that the multi-rate system employing the proposed sets can achieve significant interference reduction. Meanwhile the performance of multi-rate system is similar to that of single-rate system due to the inclusion of multi-user detection.

发射管螺旋阴极下垂的分析及控制措施

本文通过引入阴极下垂的分析模型、寻找到阴极下垂的一些理论根据，从而在发射管的设计中可对阴极下垂进行事前控制。     

工业锅炉正压燃烧故障原因分析

本文对工业锅炉正压燃烧故障形成原因进行了分析、探讨，并通过一起典型实例来说明正压燃烧故障的分析、处理方法。     

循环水场补充水量异常的分析和处理方法

以中国石油吉林石化公司电石厂441C循环水场补水量异常问题处理过程为例,通过对循环水运行过程中各种损失因素和计量检测系统的排查,找到了441C循环水场补水量异常的原因并进行了相应的处理,为今后该类问题的解决,提供了行之有效的分析和处理方法。     

Update survey on aroyl substituted thioureas and their applications

The literature on synthesis and applications of aroyl substituted thioureas is updated to 2006. Emphasis is placed on the relationship of structural features of the thioureas to their applications, which are in such diverse areas as the trace analysis of metals, materials science and agriculture. The review contains 93 references.     

On controlled invariance in nonlinear systems

The notion of Generalized Controlled Invariance (GCI) is introduced to allow for the loss of degrees of freedom in control that may be the necessary price for achieving a desired invariance. It is shown that subject to some technical rank restrictions, controlled invariance implies GCI. A sequential procedure that definitively establishes for a given system pair (Δ, χ), whether Δ is a GCI of χ is introduced, and through it, a verdict o the solvability of the controlled invariance problem (CIP) is reached.     

大溶腔内补救井技术经济分析

针对岩盐水溶开采后期生产不稳定的状况，在大面积连通采区溶腔内钻成了一眼补救井-146井。解决了井位选择、井身结构选择、完井方式选择、井控技术、大排量涌水条件下的下管和固井等技术关键，挖掘了老区生产潜力，提高了资源利用率，取得了良好的经济和社会效益，对其它水溶开采企业具有借鉴意义。     

钻柱应力波频谱分析技术的应用

钻柱应力波频谱分析技术是一个崭新的技术领域。该文针对石油钻井中在线识别钻头工况和地层岩性的客观需要,叙述了钻柱应力波的成因、其各频段的特征、应力波各频段信息的分离技术、以及频谱技术在石油工程中的应用。着重阐述了频谱高频段岩性信息的分离技术,提供了一个能量归一化公式,对井深、井径和钻进措施等干扰因素进行了分析和排除,并给出了用人工神经网络识别岩性的初步方法。