The age of formation of the mirabilite and sand wedges in the Hexi Corridor and their paleoclimatic interpretation

The Hexi Corridor is located at the transition zone of the Asian summer monsoon and westerly airflow, and lies in an important position in terms of its ecological fragility and climatic sensitivity. During a recent field expedition to this region, we found a sedimentary mirabilite layer in a number of localities including Suwushan, Yanchi, Baitujing, Yanchi Gaotai, Huahai, Yumen, Halanuo扙r, and Dunhuang (Fig. 1), which have the potential to provide important information about environmenta…     

临汾凹陷区主要活动断裂卫星影像分析

论述了活动断裂的一般影像特征，对临汾凹陷区主要活动断裂构造的卫星影像进行了分析，从而论证了应用卫星影像可以查明活动断裂的具体特征、力学性质及活动方式等，使人类进一步认识断裂构造的活动规律，将其所造成的自然灾害损失降至最低。     

经纬解析建国以来科技规划的基本特点

概括出60年中国科技规划简史的时序图。从历史与现实的经度和利益与协同的维度研究得出建国以来科技规划的6个基本特点,同时指出规划科技和自由研究的悖论。     

量子测量中的多世界理论及其意义分析

多世界解释理论作为量子测量解释的一种,已经存在了半个多世纪。它从相关态解释开始,经过漫长的沉默期、发展期逐渐成为主流物理学家和哲学家关注的热点。该理论的确立为量子测量问题提出了一致的解释,更为量子理论谋求到坚实的、另类的实在论基础。它捍卫了科学理论的真理性,并揭示了现代量子理论的发展趋势。本文分析多世界理论的哲学根源,概述其在量子测量中的研究路径,探讨其哲学意义,期望有助于人们全面了解多世界理论。     

英汉口译中文化因素的传达

英汉口译是通过口头表达,将信息由英语转换成汉语的语言交际行为.英汉口译所涉及的因素颇多,其中文化因素的传达尤为重要.不同的文化背景决定了语言的表达方式,因此,译者在口译过程中要采取转换、解释等技巧将文化内涵传达给听众.本文主要探讨口译过程中文化因素传达的内涵、技巧及意义.     

李白《梦游天姥吟留别》的象征解读

《梦游天姥吟留别》是李白的代表诗作之一,这首诗想象丰富,意象奇特,意境雄浑,变幻莫测,带着浓厚的理想色彩。深度解读天姥山的象征意味,可以感受、体会诗人梦中攀越天姥山的情感经历,从而获得独到的理想感悟和人生体验。     

从逻辑图式看马克思主义与人道主义的真实关系

马克思主义与人道主义关系问题一直是国内学界热议的理论问题之一,尤其是近年来,随着以人为本科学发展观的提出,二者之间的肯定性或积极性关系越来越受到学界的重视。但关于马克思主义与人道主义肯定性关系的讨论长期停留在语言和概念的表述性使用层面,模糊含混,缺乏清晰的概念界定和逻辑分析。从逻辑上看,马克思主义与人道主义积极性关系的具体内容可以通过四种逻辑图式完备地表现出来。通过对这四种逻辑图式的分析,我们可以发现,马克思主义与人道主义的真实关系应当是一种交集关系,这一交集的重合点在于马克思主义与人道主义在最终目标上的一致性——人的价值的全面实现和人的自由的全面发展。     

基于结构自适应模糊神经网络的前列腺癌诊断方法

前列腺癌是近年来严重危害男性健康的疾病.利用模糊神经网络方法可以实现前列腺癌诊断,并将诊断模型表示为模糊规则集合.针对模糊神经网络所提取规则解释性差的问题,提出结构自适应模糊神经网络方法,通过改进损失函数,在训练中控制相似隶属度函数的合并,实现模糊神经网络模型结构自适应调整,减少模糊规则数量,在保证诊断准确性情况下,提取出容易理解的可解释性规则.同时该方法在模型的训练过程中引入粒子群优化(PSO)算法进行结构和参数学习,有效减少计算量,提高训练效率.最后,使用临床医学科学数据中心提供的前列腺疾病检查数据进行数值实验,验证了所提出方法在前列腺癌诊断和可解释性规则提取中的有效性.     

Why the Afshar experiment does not refute complementarity

A modified version of Young's experiment by Shahriar Afshar demonstrates that, prior to what appears to be a “which-way” measurement, an interference pattern exists. Afshar has claimed that this result constitutes a violation of the Principle of Complementarity. This paper discusses the implications of this experiment and considers how Cramer's Transactional Interpretation easily accommodates the result. It is also shown that the Afshar experiment is analogous in key respects to a spin one-half particle prepared as “spin up along x”, subjected to a nondestructive confirmation of that preparation, and post-selected in a specific state of spin along z. The terminology “which-way” or “which-slit” is critiqued; it is argued that this usage by both Afshar and his critics is misleading and has contributed to confusion surrounding the interpretation of the experiment. Nevertheless, it is concluded that Bohr would have had no more problem accounting for the Afshar result than he would in accounting for the aforementioned pre- and post-selection spin experiment, in which the particle's preparation state is confirmed by a nondestructive measurement prior to post-selection. In addition, some new inferences about the interpretation of delayed choice experiments are drawn from the analysis.