快速1.3μm InGaAsP/InP台面边发光二极管

本文介绍了快速1.3μm InGaAsP/InP台面边发光二极管(ELED)的研制过程,通过有源区重掺Zn杂质和引进台面结构,提高了器件的调制频率,使-3dB调制带宽达500MHz,70mA电流下输出功率为130μW。     

三维三分量Walk-away VSP处理方法及效果分析

针对三维三分量Walk-awayVSP数据的特点,从观测系统定义、数据提取方法、抽道集、波场分离、纵波和转换波的一维深度域成像等方面进行了研究,初步形成了一套间接的三维VSP处理方法。在对垦71井区VSP数据的处理中,利用三分量处理和线性滤波、F—K滤波及基于τ—P变换和偏振分析的联合波场分离方法有效地分离出上行纵波和转换波;根据速度分析和一维速度模型在深度域对上行纵波和转换波进行成像,分别得到了两个成像剖面,其中转换波成像具有更高的分辨率和信噪比,显示出其良好的应用前景。     

Theoretical Studies of the Output Pulse with Variation of the Pumping Pulse for RF Excited CO2 Pulsed Waveguide Laser

The behavior of a RF-excited waveguide CO2 laser in the pulse regime is studied theoretically. The output pulse evolution is studied by applying three types of pulses namely the square, sine and the triangular ones as the excitation pulses. The frequency dependence behavior of the output pulse is also presented.     

速度建模的影响因素与技术对策

叠前深度偏移速度建模是一种基于模型的迭代修正过程。影响速度模型精度的因素，除了速度反演算法之外，还包括复杂近地表条件下的静校正处理和观测系统的不规则性。从地震资料处理解释一体化的研究思路出发，针对不同的地震地质条件，提出了建立精确速度模型的对策。在地震勘探程度较高的地区，首先采用测井约束法建立初始宏观层速度模型，然后利用多域双重迭代法进行优化更新，以达到满足叠前成像精度要求的目的。另外，针对我国西部山地冲断带地区速度建模存在的问题，提出了速度建模的思路和对策，并对该项技术的发展趋势进行了展望。     

The organizational fit of information systems

Abstract. One can expect that the fit, match or congruence between an information system and its organizational context will be of increasing importance as information systems become more and more integral parts of organizations. Existing IS research has largely neglected the theoretical analysis of the concept 'fit', however, even though it has been widely used in a 'pre-theoretical' sense. The analysis of the concept of 'organizational fit of an information system' put forward in this article is essentially based on the recent analysis of 'fit' in contingency theory, suggesting three interpretations for the concept: a selection approach, an interaction approach and a systems approach. A review of the IS literature on the organizational fit of information systems indicates a lack of any cumulative tradition in existing empirical contingency research into information systems and dominance of the selection approach. Because of the two limitations, this paper regards any definite assessment of the potential prospects of contingency research into information systems as overhasty and proposes a framework for future research into the situation dependence and organizational fit of information systems which integrates contingency research into information systems, contingency research into IS impacts and contingency research into the IS adoption (development/implementation) process.     

Accounting for Subordinate Perceptions of Supervisor Power: An Identity-Dependence Model.

The authors present a model that explains how subordinates perceive the power of their supervisors and the causal mechanisms by which these perceptions translate into subordinate outcomes. Drawing on identity and resource-dependence theories, the authors propose that supervisors have power over their subordinates when they control resources needed for the subordinates' enactment and maintenance of current and desired identities. The joint effect of perceptions of supervisor power and supervisor intentions to provide such resources leads to 4 conditions ranging from highly functional to highly dysfunctional: confirmation, hope, apathy, and progressive withdrawal. Each of these conditions is associated with specific outcomes such as the quality of the supervisor-subordinate relationship, turnover, and changes in the type and centrality of various subordinate identities. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

主井延深岩柱中深孔凿岩爆破

在主井延深岩柱工程中，采用中深孔凿岩和光面控制爆破工艺。有利于安全施工，而且使爆破后的周边孔痕率平均达90%，减少爆破对井筒围岩的有效破坏，使井筒成型规整，稳定，有利于支护。     

切削深度对铝合金加工过程影响的数值仿真

采用Lagrange质点坐标系描述方法，利用有限元分析软件，建立了二维热-力耦合正交直角切削有限元模型．通过网格自适应技术，模拟切屑的形成，仿真切削深度对铝合金加工变形的影响。结果表阴，切削深度对切削力的影响呈线性正比例关系。切削深度越大，切削面积和切削宽度相应增加，切削力也越大。切削深度影响切削加工产生的残余应力大小及分布，残余应力分布在工件表面以下的0．2mm以内很薄的金属层，这对于厚度较小的薄壁件加工后的变形有很大的影响。加工时，为了提高工件表面的精加工精度，降低工件表面的残余应力，在精加工时尽量采用小的切削深度。     

应力场的变化与卸荷影响深度的关系

该文模拟基坑开挖过程 ,由应力场变化方面入手分析开挖面以下粘性土体残余强度和静止土压力的规律性 ,以期确定土体开挖卸荷的影响深度     

陕西深部找矿进展及找矿建议

陕西对深部找矿十分重视，并取得较好的找矿成果。陕西也要加强从地表找矿转向500m以深的“第二找矿空间”找矿。我们建议对已有矿山深部、凤太铅锌矿田、南郑马元铅锌矿带东延、镇（安）旬（阳）沉积盆地铅锌汞锑矿、洛南斑岩型钼（铜）矿地区等作为深部找矿的重要靶区，加强对鄂尔多斯盆地深部煤炭、岩盐、金剐石、油页岩、砂岩型铀矿的勘查，在小秦岭金矿之下再找一个“小秦岭”是可能的，在前寒武纪隐伏基底上深部找矿。