我国压铸行业及压铸机制造业的情况介绍

压力铸造（简称压铸）是金属成型技术中的一种。由于压铸生产技术的生产效率高、产品质量好、经济效益好，因此，用压铸方法生产出的零件（即压铸件）得到广泛的应用，遍及各个工业领域。其中，汽车和摩托车等交通工具作为支柱产业成为压铸零件的最大用户。航空、航天、兵器、电子等工业都是压铸零件的重要用户；还有五金、灯具、玩具、家电、电动及风动工具等行业也都大量地加以采用。     

AB活性污泥法污水处理技术的消化和创新

本文介绍漳州市东区污水处理厂AB法设计、运行的特点，总结了安装、运行的效果，提出了今后改进方法。     

Time-Space Label Switching Protocol (TSL-SP)—A New Paradigm of Network Resource Assignment

In this paper we propose a new protocol called time-space label switching protocol (TSL-SP) in optical burst switching (OBS), and define the terms time-space label (TSL) and time-space routing (TSR). An important concept of response time is introduced in the time label mechanism. The TSL-SP is a new technology that can quickly and efficiently forward data with a label on the optical networks. A two-dimension label switched path (TD-LSP) can be set up, that is maintained and deleted by the TSL-SP. For clearly illuminating the operation principles of the TSL-SP, we propose a new approach of orthogonal time-space coordinates in which the vertical coordinate is the space label and the horizontal coordinate is the time label. The proposed TD-LSP can dramatically reduce the routing failure probability and greatly improve the link network efficiency compared with other signaling protocols. Moreover, we define the time-space label control plane that can achieve the higher efficiency. When the TSL-SP is applied to networks, switching performance can be improved by two orders compared to the switching performance with the conventional OBS signaling protocols. The fundamental goal of TSL-SP is to band the signaling and routing functions together closely. Also, the TSL-SP can reduce the complexity of the network, support automatic service offering, and provide traffic engineering.     

An efficient BIST method for non-traditional faults of embedded memory arrays

In this work, a built-in self-testing (BIST) method is proposed to detect nontraditional faults of embedded memory arrays for a system-on-chip (SoC) design. The nontraditional faults include single-cell read-sensitive faults and read coupling faults. The BIST method can efficiently deal with embedded memory arrays spatially distributed on the entire SoC chip. The concept of redundant read-write operations is applied to detect all embedded memory arrays with different sizes simultaneously. The redundant operations do not affect the fault coverage of all nontraditional faults discussed in this paper. The method has the advantages of low hardware overhead, short test time, and high fault coverage for nontraditional memory defects.     

基于协方差矩阵变换的相干源个数估计

正确地估计信号源个数是高分辨阵列信号处理的一个重要组成部分,本文提出了一种相干源个数估计的方法。这种方法是先采用空间平滑技术对信号源去相关,然后对阵列协方差进行酉变换,最后用基于协方差矩阵变换的信息论准则和盖氏半径(Gerschgorin Radii)两种方法估计信号源个数。计算机仿真结果证实了方法的可行性。     

Hankel transform-domain analysis of scattered fields in multilayer planar waveguides and lasers with circular gratings

Radiation patterns of scattered fields with arbitrary azimuthal orders in multilayer planar waveguides and laser cavities with circularly symmetric gratings are formulated based on the volume current method. Full-wave Green's function analysis based on the integral transform method lies at the heart of this approach. Unlike the conventional approach, the dyadic Green's function relates some auxiliary fields to some auxiliary sources in the spectral domain. These auxiliary functions are defined to facilitate the spectral domain formulation in the cylindrical coordinate system and the use of transfer matrix method for obtaining a closed-form solution of the spectral Green's function in multilayer planar structures. More importantly, it is shown that the far-field pattern of the scattered field can be expressed directly in terms of the auxiliary fields in the Hankel transform domain.     

己二酸二乙酯合成新工艺的研究

本文以离子交换树脂作为液固相酯化反应的催化剂 ,甲苯作为带水剂 ,合成己二酸二乙酯。应用本法 ,酯化反应产率高达 78%。同时对影响产率的诸因素进行了考察 ,其最佳反应条件为 :酸醇摩尔比 1∶4 ,催化剂用量为酸质量的 2 5 % ,反应时间为 10小时 ,反应温度 86～ 87℃ ,催化剂重复使用 4次 ,未出现活性明显下降 ,此工艺操作简单 ,反应条件温和 ,产率高 ,具有显著的工业应用价值。     

微波功率放大器预失真线性化技术分析

给出了两种基本形式的预失真线性化电路,对其工作原理和技术特点进行了分析。     

Dangerous liaisons? Component-based development and organizational subcultures

This paper presents an exploratory case study of the investment banking arm of a multinational banking corporation (Invebank) and its attempt to introduce component-based development (CBD). Based on a logic of opposition and utilizing literature on organizational culture and metaphors as an analytical device, issues confronting Invebank in CBD adoption are identified. In particular, problems in CBD implementation were encountered because, while CBD requires extensive knowledge sharing and collaboration, subcultural differences in Invebank meant that this proved difficult to enact. Thus, the paper considers the complexities of subcultural differences in firms and provides a salutary reminder that the implementation of corporate-wide integrative "solutions" such as CBD, may be problematic. Further, there is more to the issue of organizational subcultural differences than the oft-cited business-information technology (IT) divide. Nevertheless, the case demonstrates that subcultural differences should not simply be viewed as a threat. Rather, the recognition and discussion of these differences can provide a stimulus for identifying limitations of the policies surrounding technology implementation and use that if changed could help to maximize the benefits of the technology. Simplistic entreaties to knowledge sharing and the nurture of collaboration and consensus are, thus, brought into question. Implications for further research into the implementation of integrative software solutions like CBD in multifunctional and multifarious organizations are also considered.     

高压旋喷注浆法在高层建筑地基处理工程中的应用

通过四川双流某公司科研办公大楼采用高压旋喷注浆法复合地基的工程实例，介绍了高压旋喷注浆法在高层建筑地基处理工程中的成功应用，简述了高压旋喷注浆法的工作机理、设计计算、施工过程和检测结果。针对工程地质情况复杂，持力层埋置较深，场地有无规律的软弱下卧层，地基承载力要求又高的高层建筑，提出一种确实可行的地基处理方法——高压旋喷注浆法。