初步地

Based on this idea, the author has chosen two typical loess sections of Luochuan, and Xifeng for this study, collected the successive loess columns; To probe the conditional experiments of BeO sample preparation and measurement, and improve the existing method; On the basis of the technology improvement, the author has finished 402 samples' BeO preparation and AMS measurement; Also at the same time, to separate quartz from samples at 1 cm interval for both Luochuan and Xifeng sections systematically, to carry out measurements of quartz grain-size, SUS, grey scale, carbonate content and bulk sample density; By using the grain size model, the author has set up the chronological framework for both Luochuan, and Xifeng sections and the time sequence of millennial scale abrupt climate events recorded in loess strata, and reconstructed the East Asian monsoon history over 130ka by using multi proxies; Finally, to discuss the possible mechanisms of palaeoclimatic changes tentatively.

详细地球科学的发展离不开高精度和高分辨率的研究。运用长寿命核素如〓Be作为环境过程的示踪，已成为不可替代的有效工具。本论文选择洛川、西峰两个典型的黄土剖面，连续采集柱状样；探索了BeO样品制备、测量的条件实验，改进了原有的方法，完成了402个BeO样品的制备和AMS测量；同时还系统地分离洛川、西峰剖面高分辨率（1cm）黄土、古土壤样品中的碎屑石英，测量了碎屑石英粒度，以及全样的磁化率、灰度、碳酸盐含量和容重等古气候代用指标；采用粒度年代模式建立了洛川剖面和西峰剖面的年代标尺，建立了黄土地层记录的千年尺度的气候突变事件的时间序列，多指标重建了最近130ka东亚季风变迁史；初步讨论了古气候变迁的可能机制。

In this paper, we utilize both measured and paleoclimatic proxy data as much as possible, conduct wavelet analysis technique, analyze the past climatic characteristics of various areas in China and their relationship, and the cause of climatic variation has been studied.

本文尽可能多地利用器测资料和各种古气候代用资料，运用子波分析等统计方法，分析中国不同地区过去气候变化的特征和相互关系，同时对其变化原因进行了初步研究。

The characteristics of density bands of Porites coral from Meiji reef in Nansha area are revealed by X-radiography of coral slabs and periodical changes of δ^18 O and δ^13 C in the skeletons.

结合珊瑚骨骼X射线照片和δ^18O、δ^13C的年际变化，对南沙群岛美济礁滨珊瑚骨骼岩心的密度条带进行了分析，发现其密度带变化模式多样，初步可归纳为如下3种类型：(1)宽度相近的高低密度条纹均匀、相间地排列，一对高低密度条带平均宽约4mm；(2)在骨骼主生长轴上由近于均匀分布的细密度条带组成。

It's very difficult to accurately determine the mechanics parameters of the caves, the boundary and initial conditions, the best construction scheme and support parameters before the caves are excavated, so there are a lot of blindness, diseconomy and hidden risks in the predesign of the caves.

由于在地下洞室开挖之前较准确地确定围岩的地质条件及相关的基本参数往往是很难的，故开挖方案和支护参数初步设计也存在许多盲目性，不经济性或安全隐患。

In this thesis, based on the study of software/hardware co-design methodolgy, a new more perfect software/hardware co-design method combining with UML and SystemC for embedded systems is put forword, furthermore, a software/hardware co-design system using UML and SystemC is preparatorily implemented.

本文通过对软硬件协同设计的研究，将UML和SystemC有机地结合起来应用在软硬件协同设计中，提出一种新的、较为完整的嵌入式系统软硬件协同设计的方法，并初步实现基于UML和SystemC的软硬件协同设计的设计系统。

First, the performance of the conventional single-user detector、the optimal multiuser detector、the decorrelating detector and MMSE blind multiuser detectors have been analyzed in this paper, via simulation confirmation, an effective blind multiuser detector that can solve MAI and near-far problem is attained, its implementation is introduced preparatorily in this paper.

首先，本文较为系统地分析了传统检测器CD、最优检测器OMUD、解相关检测器DD及MMSE盲多用户检测器(基于子空间的盲算法及基于CMOE准则的盲算法)的性能，通过仿真验证，得出一种能有效解决多址干扰和远近问题的盲多用户检测器，并初步给出其实现方案。

This paper brings forward a network based injection mold development system framework. The system's founder has analyzed the disadvantages of Engineering's conventional exploitation mode of injection mold. It takes the structure of Client/Server which can support collaborative work effectively. And the key technologies of cooperative exchange tools and information share are analyzed. By use of the technology, a prototypal system is set up.

在分析传统注塑模承接式串行开发过程的不足基础上，提出了基于网络的注塑模具协同并行开发系统框架，其采用的基于客户/服务器原理的系统结构可以有效地支持协同工作，并分析了协同交互工具和信息共享等系统关键技术；最后初步实现了注塑模协同设计与仿真服务器端。

This research has proved that an artificial neural network is capable to differentiate the reactional enhancement of malignant intracranial gliomas in postoperative MR images and the enhancement caused by tumor residual. As a innovative differentiation approach, it requires further studies and researches to determine its applicability in practice, including the increase of training samples, image description standardization, effects to doctoral diagnosis, as well as parameter optimization. With improvements in these elements, the performance of the network will be optimized.

本研究成功地证明了人工神经网络能够鉴别颅内恶性胶质瘤术后磁共振图像的反应性强化与肿瘤残存所致的强化，为解决二者的鉴别这一复杂问题提供了一个新的方法，但是本研究只是初步的应用探讨，能否在实际中应用，还有待于进一步的研究，如训练样本的增加、图像描述的规范化、对医师诊断影响程度、参数的优化等，网络的性能会不断完善和提高。

This research has proved that an artificial neural network is capable to differentiate the reactional enhancement of malignant intracranial gliomas in postoperative MR images and the enhancement caused by tumor residual. As a innovative differentiation approach, it requires further studies and researches to determine its applicability in practice, including the increase of training samples, image de脚本ion standardization, effects to doctoral diagnosis, as well as parameter optimization. With improvements in these elements, the performance of the network will be optimized.

本研究成功地证明了人工神经网络能够鉴别颅内恶性胶质瘤术后磁共振图像的反应性强化与肿瘤残存所致的强化，为解决二者的鉴别这一复杂问题提供了一个新的方法，但是本研究只是初步的应用探讨，能否在实际中应用，还有待于进一步的研究，如训练样本的增加、图像描述的规范化、对医师诊断影响程度、参数的优化等，网络的性能会不断完善和提高。

ABSTRACT Explained to reading the goal with teaching of writing like this in the full-time compulsory education ' course standard of Chinese ': Can understand, appreciate the literary works tentatively, receive noble sentiment and interesting edifying, develop the individual character, enrich one's own inner world, can express one's own meaning concretely and clearly, readably and fluently.

全日制义务教育《语文课程标准》中对初中阅读和写作教学的目标是这样阐述的：能初步理解、鉴赏文学作品，受到高尚情操与趣味的熏陶，发展个性，丰富自己的精神世界，能具体明确、文从字顺地表达自己的意思。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。