如何解决时间旅行和因果关系之间的矛盾

本文在分别讨论了诺维柯夫的“自洽性原理”和霍金的“时序保护猜想”解决时间旅行和因果关系之间矛盾的具体方案后，指出两个方案中可能存在的问题，从而得出较为合理的结论。     

西安交通大学图书馆实时咨询系统的建设与服务

概述了西安交通大学图书馆实时咨询系统的开发过程以及实时咨询服务的开展情况,探讨了实时咨询系统中自动回答机制的可行性,提出实时咨询系统的本质特点是同步浏览,实时咨询不能代替其他异步的数字咨询方式,要重视系统的开发,但更要重视实时咨询服务的提供。     

A reconsidering chronos: Chronistic criticism and the first ‘Iraqi national calendar

Chronos is a traditionally marginalized term in rhetorical studies. Historically paired with kairos, chronos is commonly taken to refer to chronology, empty, homogenous, and external time. I argue for a reconsideration and redefinition of chronos that pairs the term with a critical materialist theory of time as change, immanent temporalities. Chronos understood as an entanglement of immanent temporalities informs chronistic criticism. Chronistic criticism is a conceptual criticism investigating the rhetorical arrangement, or synchronization, of multiple processes of change. Reconsidering chronos makes room for investigating time-related texts, like ‘Iraq's first national calendar. This calendar emerged after the establishment of the ‘Iraqi state under the League of Nation's Mandate System where British authorities were charged with building a modern nation state from territories of the former Ottoman Empire. I demonstrate chronistic criticism examining Gertrude Bell's digital archive for observations about successes, failures, and competitors with the national calendar. A vitalized chronos stands to make substantive contributions to the study of numerous rhetorical concepts. Specifically, for this investigation, chronos offers new insights into political myths, calendars, nation building, and the potential influences of nonhuman immanent temporalities.     

流程工业中基于混沌时间序列的成本预测研究

针对流程工业中连续性生产过程的时间序列特点,采用基于混沌时间序列的Lyapunov指数计算和预测方法对成本进行了预测研究。     

浅谈儿童在伊恩·麦克尤恩主要作品中的作用

大量关于"儿童"的描写贯穿了麦克尤恩文学创作的始终,其文学作品塑造了经典、丰富的儿童形象。本文试对麦克尤恩的三篇长篇小说《水泥花园》、《时间中孩子》及《赎罪》中儿童在叙述成人世界、观照生命哲学以及展现主题方面的作用进行了分析,并发现麦克尤恩对于儿童作用的创作是独特的,并且这种创作是和作者自身的经历、社会变迁等紧密相关的。     

庆历新政时期欧阳修政论文研究

本文从文体、内容、风格三个角度阐述了欧阳修政论文在庆历新政时期表现出的特点。庆历新政时期,欧阳修政论文文体主要为割、状,相应于这种文体,其政论文具有即时性等特点;内容方面,通过比较可以看出此时期欧阳修政论文密切联系时政、政治视角开阔;风格角度的研究成果很多,因此本文仅从欧阳修政论文体现出的形象、论点提出方式、论据来源和此一时期常用论证手法等角度展开论述。     

长江经济带生态环境压力、状态及响应耦合协调发展研究

论文基于压力-状态-响应模型(PSR)框架模型,构建生态环境综合评价指标体系,采用耦合协调度模型,对2010-2016年长江经济带各省市生态环境压力、状态和响应子系统耦合协调性进行探讨,并利用面板计量模型实证分析协调发展度各因素影响的显著性和差异性。研究结果表明：(1)从各省市看,耦合度除上海出现下降外,其余省市都呈现波动上升态势,耦合类型主要处于磨合阶段和高度耦合阶段;协调发展度除上海和云南出现下降外,其余省市也都呈现波动上升态势,协调发展等级主要集中在中度协调类。(2)从各区域看,协调发展总体上呈现“中部区域大于东部区域大于西部区域”的空间特征。(3)从区域整体看,耦合度和协调发展度都波动上升;协调发展主要制约因素为生态环境响应和压力。论文研究不仅丰富了生态环境耦合协调发展理论,也拓展了研究对象,主要结论对于生态环境子系统间协调发展,具有重要的理论和实践意义。     

SSTS: A syntactic tool for pattern search on time series

Nowadays, data scientists are capable of manipulating and extracting complex information from time series data, given the current diversity of tools at their disposal. However, the plethora of tools that target data exploration and pattern search may require an extensive amount of time to develop methods that correspond to the data scientist's reasoning, in order to solve their queries. The development of new methods, tightly related with the reasoning and visual analysis of time series data, is of great relevance to improving complexity and productivity of pattern and query search tasks. In this work, we propose a novel tool, capable of exploring time series data for pattern and query search tasks in a set of 3 symbolic steps: Pre-Processing, Symbolic Connotation and Search. The framework is called SSTS (Symbolic Search in Time Series) and uses regular expression queries to search the desired patterns in a symbolic representation of the signal. By adopting a set of symbolic methods, this approach has the purpose of increasing the expressiveness in solving standard pattern and query tasks, enabling the creation of queries more closely related to the reasoning and visual analysis of the signal. We demonstrate the tool's effectiveness by presenting 9 examples with several types of queries on time series. The SSTS queries were compared with standard code developed in Python, in terms of cognitive effort, vocabulary required, code length, volume, interpretation and difficulty metrics based on the Halstead complexity measures. The results demonstrate that this methodology is a valid approach and delivers a new abstraction layer on data analysis of time series.     

南非世界杯开启世界足球的“欧洲时代”

南非世界杯的核心价值是充分展现欧洲职业足球文明带给全世界的足球信仰、足球理念和思想。在本届世界杯中＂欧洲元素＂无所不在,从32支国家的参赛球员、教练到最后的比赛名次,从比赛技战术的总体走势到最佳阵容的评选,处处都有欧洲联赛、欧洲职业足球俱乐部的烙印。欧洲足球的强势摧毁了长期以来南美与欧洲抗衡的均势,欧洲足球与拉丁足球已经失去了明显的界限,拉丁足球一息尚存的技术优势在欧洲足球殖民主义的压迫下没有了往日的辉煌,南非世界杯从形式到实质都成了名副其实的欧洲世界杯。     

冲击损伤的增强X射线实时成像检测

对复合材料结构承载能力影响最严重、安全威胁最大的是冲击损伤,因此冲击损伤是复合材料损伤的主要研究对象。本文从增强剂四溴乙烷的浓度、施加方式与时间等方面的选定,进行了冲击损伤的增强X射线实时成像检测研究,其结果是对超声波C扫描检测结果的进一步验证与补充。