基于实验语音学的英语元音偏误分析

英语语音学是高校英语专业的基础课。对中国学生来说,掌握好英语基本音素的发音是学好英语的关键．其中对英语元音的掌握又是英语语音学习中的难点。对英语元音的描述,以往是根据传统的耳听法归纳出正确的和错误的元音发音．但随着实验语音学相关知识及语谱图在分析语音中的普及．则使语言学习者在语音方面出现的问题更能直观地表现出来。     

Hierarchical recursive generalized extended least squares estimation algorithms for a class of nonlinear stochastic systems with colored noise

This paper considers the parameter identification problem of a bilinear state space system with colored noise based on its input-output representation. An input-output representation of a bilinear state-space system is derived for the parameter identification by eliminating the state variables in the model, and a recursive generalized extended least squares algorithm is presented for estimating the parameters of the obtained model. Furthermore, a three-stage recursive generalized extended least squares algorithm is proposed for reducing the computational cost. The validity of the proposed method is evaluated through a numerical example.     

高校开展论文收录检索服务时应注意的几点细节

本文主要阐述了在高校开展论文收录检索服务时应注意的几点细节.首先是接受用户委托时应做的工作,包括耐心地说服教师填写委托单和指导教师填写完整的委托单.然后重点谈面对特殊委托情况时的对策,包括只提供中文题名、只提供姓名和单位时的做法,以及填写了完整的委托单、需要检索SCI引用情况和团体委托检索时的做法,最后还谈了如何最快区分EI数据库中核心数据库和非核心数据.本文所谈及的具体做法将为信息检索人员提供参考.     

我国"十一五"海洋资源科技发展的战略选择

海洋资源是我国新世纪经济社会发展的重要依托,海洋资源科技是我国支撑和引领海洋经济发展的优先科技领域。在分析总结国内外海洋资源科技发展和问题的基础上,文章就“十一五”期间海洋资源科技发展的总体目标、重点领域、优先选题、前沿技术等进行了讨论,就加强海洋资源科技创新能力建设给出了政策建议。     

北京奥运会的绿色遗产研究

北京奥运会是一个"无与伦比"的奥运会,这不仅体现在取得辉煌比赛成绩上,更体现在给奥林匹克历史传承留下的遗产上.北京奥运会的遗产是多层面的,绿色遗产是它的最丰厚核心价值,绿色场馆、绿色体育、绿色意识是推动奥林匹克体育运动和谐、可持续发展的不竭动力,也我们建设和谐社会伟大的宝贵财富.     

文化因素对翻译的影响

翻译的过程不仅涉及语言问题,也涉及文化问题。源语和目的语之间的文化差异影响着翻译的成功与否。本文从两种语言发展的生态环境、文化观念、宗教信仰、历史背景、思维模式以及物质生产活动等方面的差异进行探讨,从而证明在翻译过程中应正确有效地认识和处理文化差异。     

Osteoinduction by Ca-P biomaterials implanted into the muscles of mice

The osteoinduction of porous biphasic calcium phosphate ceramics (BCP) has been widely reported and documented, but little research has been performed on rodent animals, e.g., mice. In this study, we report osteoinduction in a mouse model. Thirty mice were divided into two groups. BCP materials (Sample A) and control ceramics (Sample B) were implanted into the leg muscle, respectively. Five mice in each group were killed at 15, 30, and 45 d after surgery. Sample A and Sample B were harvested and used for hematoxylin and eosin (HE) staining, immunohistochemistry (IHC) staining, and Alizarin Red S staining to check bone formation in the biomaterials. Histological analysis showed that no bone tissue was formed 15 d after implantation (0/5) in either of the two groups. Newly-formed bone tissues were observed in Sample A at 30 d (5/5) and 45 d (5/5) after implantation; the average amounts of newly-formed bone tissues were approximately 5.2% and 8.6%, respectively. However, we did not see any bone tissue in Sample B until 45 d after implantation. Bone-related molecular makers such as bone morphogenesis protein-2 (BMP-2), collagen type I, and osteopontin were detected by IHC staining in Sample A 30 d after implantation. In addition, the newly-formed bone was also confirmed by Alizarin Red S staining. Because this is the report of osteoinduction in the rodent animal on which all the biotechnologies were available, our results may contribute to further mechanism research.     

论商务英语信函中的合作与礼貌原则

语言学中的合作原则和礼貌原则不仅适用于日常交际领域,同样适用于商务英语信函。商务英语信函写作的7c原则反映了合作原则和礼貌原则的并存与互补。在商务活动中,应该具体问题具体分析,综合考虑各种因素和需要,根据实际情况采取不同的策略,才能达到预期的交际效果。     

新时期维护高校稳定工作的思考与实践

新时期维护高校稳定工作,应把握“三个范畴”（学生、教师和员工“三个群体”的人员范畴,招生、培养和就业“三个过程”的时间范畴,校内、校外和网络“三个领域”的空间范畴）,切实做好抵御渗透、治安防控和矛盾纠处的“三个重点”工作,不断完善沟通协调机制、考核评估机制以及相关保障机制的“三个机制”,从而保障师生人身财产安全,实现高校平安和谐。     

On the relationship between download and citation counts: An introduction of Granger-causality inference

Studies on the relationship between the numbers of citations and downloads of scientific publications is beneficial for understanding the mechanism of citation patterns and research evaluation. However, seldom studies have considered directionality issues between downloads and citations or adopted a case-by-case time lag length between the download and citation time series of each individual publication. In this paper, we introduce the Granger-causal inference strategy to study the directionality between downloads and citations and set up the length of time lag between the time series for each case. By researching the publications on the Lancet, we find that publications have various directionality patterns, but highly cited publications tend to feature greater possibilities to have Granger causality. We apply a step-by-step manner to introduce the Granger-causal inference method to information science as four steps, namely conducting stationarity tests, determining time lag between time series, establishing cointegration test, and implementing Granger-causality inference. We hope that this method can be applied by future information scientists in their own research contexts.