特点

During the process of the fore mentioned analyses, some tentative works as follows were done.(1)On the basis of the fundamental of spatial analytic geometry, the basic method for displaceable block searching was put forward and the relevant program was written. With this program one can easily search out all the displaceable blocks and omitting of blocks, which is very common in searching blocks manually, can be avoided.(2)The coefficient of stability of blocks with failure mode II-2(that is, sliding on a single sliding surface, but confined by near intersecting line )was deduced.(3)The multi-cavern effect of Laxiwa underground caverns was studied on the assumption that all of the caverns were full face tunneled at the same time.(4)The stability classification scheme of rock mass surrounding large scale underground caverns was established. In addition to inherit the merits of the method of engineering geological

在完成上述工作的过程中，本论文主要在以下几个方面进行了一些探索：①基于空间解析几何原理，提出了块体搜索的基本思路并编制出相应的程序，基本实现了块体搜索的自动化，既大大缩短了块体搜索时间，又能防止因人工搜索引起的遗漏；②推导出Ⅱ-2型(单滑面滑动，但受侧限面约束)块体的稳定性系数计算公式；③以数值模拟方法论证了拉西瓦地下厂房洞室群全断面一次开挖时群洞效应的具体特点；④以岩体质量、开挖效应、群洞效应和次生灾害效应为评价指标，建立了&大型地下洞室群围岩稳定性分类&方案；该方案既继承了水电行业规范&围岩工程地质分类&法的优点，又综合考虑了大型地下洞室群的工程特点。

By time-varying filtering, we realize the signal selectivity and interference suppression, especially for the signals with time-varying power spectrum. It is shown herein that conventional eigenstructure based methods are lower dimensional special case of the time-frequency subspace fitting method. The closed-form array response estimation algorithms for blind source separation in wireless communication is also developed in the dissertation by exploiting the data structure of second-order statistics of the array output in the presence of multipath. The proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array utilized here can be of arbitrary geometry and even uncalibrated. Since the closed-form solution is obtained, no misconvergency may occur and large amount of computation can be saved. The equivalent feed model and corresponding optimization designation are proposed to realize the downlink multi-user selective transmission. By coherent and non-coherent superposition of the electromagnetical field, multiple beams can be formed using a single array, so that each co-channel user signal is transmitted in each beam and will not interfered with each other. The proposed system scheme implements the digital beamforming and the channel allocation in the base band, therefore is suitable for the utilization of the radio software technology. The feasibility and effectiveness of the proposed model are proved by the RF experiment.

在窄带条件下，GSC－SSF方法还可以提高阵列的虚拟孔径，从而提高估计的性能；可以证明，Cyclic DOA 和SC-SSF方法可看作该方法的特例或近似； 3、提出了二维GSC－SSF方法和宽带谱相关DOA矩阵方法，利用信号的循环平稳特性解决了宽带条件下二维 DOA 估计问题，并具有阵元数少、计算量较小的特点； 4、提出了时频子空间拟合和宽带时频DOA估计算法，将联合时频分析的理论和方法引入到阵列信号的空间谱估计研究中，利用时变滤波实现信号选择性测向和干扰抑制，特别适合于谱时变信号；可以证明传统特征结构法可看作是时频子空间拟合方法的特例； 5、提出了多用户环境下阵列响应的估计方法——CARE方法，该方法对信号结构和传播参数（主要是散射源分布与角度散布）的约束较少，适用于各种几何结构的阵列甚至未校准的阵列，能够直接得到阵列响应的闭式解，因此计算量小、稳健性好，不存在收敛问题； 6、提出了针对多用户下行选择性发送的阵列等效激励模型、优化设计方法及其系统实现方案，通过空间场的相干叠加与非相干叠加使得单一阵列能够形成多个波束，并保证各波束内的用户信号各不相同且相互干扰最小；其系统方案具有在基带实现数字波束成形、信道分配并便于软件无线电实现的特点，其有效性已得到外场实测数据的证实。

Based on plant morphological traits, some types of strategies could be divided. The regeneration strategies of three species, Eriocaulon buergerianum, Juncus articulatus and Sagittaria potamogetifolia, had characteristics of r-strategists, and Oryza rufipogon, Scirpus triangulatus and Eleocharis plantagineiformis had characteristics of K-strategists.

根据植物的功能形态学特征，可以分出一些生活史对策类型，如从种子特征来看，谷精草、小花灯心草和小慈姑等植物的更新对策具有明显的r-对策特点，粉被苔草、野荸荠和普通野生稻等具有一定的K-对策特点；依据成株特征也可以区分出竞争、躲避或耐压对策的定居对策类型。

At the beginning of the paper, a literature review on the domestic and abroad researches of Container Terminal logistics system is provided introducing some computer simulating model technology apply case on Container Terminal logistics system on the domestic and abroad; secondly this article introduce the element and characteristics of Container Terminal operation system ,specially operation flow , controlling principle (including gate testing principle, ship controlling principle , quay operating principle , yard I/O operating principle , yard running system),followed by quality evaluating index and empiristic formulas of Container Terminal .

本文首先回顾了国内外集装箱码头物流系统的研究动态，介绍了国内外计算机仿真技术在集装箱码头物流系统仿真中的应用情况，然后介绍了集装箱码头作业系统的组成和特点，以及其装卸工艺、作业流程、操作原则(包括大门检查箱作业原则、船舶调度管理原则、码头前沿操作原则、堆场存取箱作业管理原则、堆场管理系统)，接着介绍集装箱码头系统的性能评价指标和码头通过能力经验公式及出入口车道数计算，并结合天津港集装箱码头物流系统的特点，系统地介绍了天津港集装箱码头的基本组成、布局、装卸工艺、作业流程后，评估了集装箱码头物流系统的相关性能指标，并结合实际码头的历史数据，介绍一些相关的经验公式。

Objective To study the diagnostic and therapeutiic features of prolacfinoma in methods 23 male Patients with prolactinoma patienta in clinical manifestation, pathologic, endocrinological, radiographic andtherapeutic features.

目的 分析总结男性垂体泌乳素腺瘤的诊断和治疗特点：方法对10年间23例男性垂体泌乳素腺瘤患者的临床表现和肿瘤的病理学、内分泌学、影像学及治疗特点进行分析。

Molar tooth structures are episodically located in Precambrian subtidal shallow marine environment, and their temporal and spatial characteristics indicate incompatibility with stromatolites.

臼齿构造多产出于正常浅海潮下环境，并且呈幕式特点产出于前寒武纪地层记录中，其时空发育特点似乎表明与叠层石发育的不相容性。

Items and derived items copyright 2001 by Harcourt, Inc. The Different Kinds of Goods When thinking about the various goods in the economy, it is useful to group them according to two characteristics: u Is the good excludable?

不同类型的物品在考虑经济中的各种物品时，在考虑经济中的各种物品时，根据两个特点来对物品分类是有用的：个特点来对物品分类是有用的物品有排他性吗？

In the hardware circle design, the original measure signal is gained from the sensor, so it is critical to make a choice; In additional, a new type electronic component called True R MS-to-DC converter AD536A which can reduce the complex and expatiatory software transition is used to improve the system's response speed; This system is controlled by a single chip microcomputer which will processes the sampling signal.

在硬件电路中，由于原始的测量信号是从传感器获得的，因此传感器的选用比较关键。本仪表采用了新型电子芯片AD536，AD536真有效值芯片可以省去复杂冗长的软件换算过程，提高系统的响应速度，在此主要是介绍它的功能和应用特点；我们采用单片机对采样信号进行处理，选用凌阳16位单片机，着重介绍了它的性能特点；在采样和误差分析方面，对测量仪的数据转换系统进行了详细的分析，包括该系统的结构功能以及误差的来源，并提出了提高精度减小误差的措施。

According to the problem of complicate shceme with multi-grade decision in the engineering management, the Analytic Hierarchy Process was introduced, the matrix model based on AHP was built and the programm of Mathcad was done. This model can be appliedin multi-goal and multi-grade decision and fetures with clear physical concept, simpleness and feasibleness.

针对现代工程项目风险管理涉及面广、技术复杂的特点，存在大量的复杂方案多级风险决策问题，介绍了层次分析法的理论与算法，改进该算法建立层次分析矩阵计算模型，并编制相应的Mathcad程序；此模型特别适用于计算机进行复杂工程项目多方案多级决策，具有概念明确、实用简单的特点。

Ltd's 40 t/h boiler heating surface has been optimized based on the analysis of coal-fired boiler and gas-fired boiler's different characteristics and heat transfer technology. At the same time, combustion mode and measures of stable combustion are analyzed and discussed, for the flameless combustion technology characters such as combustion speed, high-temperature, combusting completely and the stability of combustion, easy to operate, with the different combustion characteristics of blast furnace gas, coke-oven gas, converter gas and the actual needs of Chongqing Iron and Steel Co. Ltd's gas balance, a suitable combustion device is designed to improve boiler's thermal efficiency, recovery efficient of by-product gas, and reducing gas emission.

本文通过对燃煤锅炉与燃气锅炉的不同特点对比分析以及受热面传热技术的探讨，对重钢40t/h锅炉受热面进行了优化改造；同时对燃气燃烧方式以及强化燃烧的技术措施进行了分析和讨论，利用无焰燃烧技术的燃烧速度快、燃烧温度高，燃烧完全及扩散燃烧技术的燃烧稳定、运行可靠、结构简单等特点，结合高、焦炉煤气的不同燃烧特性和重钢煤气平衡的实际需要，选择、设计了合适的燃烧装置，实现了提高锅炉热效率，高效回收利用副产煤气，降低煤气放散的目的。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。