专利技术主题分析:基于SAO结构的LDA主题模型方法

[目的/意义]改善现有专利技术主题分析方法主题辨识度低、主题词二义性、无法识别技术信息中的"问题"与相应"解决方案"等问题。[方法/过程]本文通过抽取专利文本中的SAO结构,并从SAO结构中识别"问题和解决方案"（P&S）模式,基于"bag of P&S"假设,构建基于"主语-行为-宾语"（subject-action-object,SAO）结构的LDA主题模型,实现对专利文献主题结构的识别和分析。[结果/结论]案例研究表明,该方法能够有效识别主题分布,并在主题辨识度和语义消岐方面较传统LDA模型具有较大优势。     

Baecklund Transformation and Localized Coherent Structure for the （2＋1）—Dimensional Asymmetric Nizhnik—Novikov—Veselov Equation

This article is concerned with the extended homogeneous balance method for studying the abundant lacalized solution structure of the (2 1)-dimensional asymmetric Nizhnik-novikov-Veselov equation.A Baecklund transformation was first obtained.and then the richness of the localized coherent structures was found,which was caused by the entrance of two variable-separated arbitrary functions,in the model.For some spectial choices of the arbitrary functions,it is shown that the localized structures of the model may be dromions,lumps,and rinmg solitons.     

高校学报拓展优质稿源的途径

高校学报要提高学术质量,必须加强组稿工作,坚持组稿原则,更新编辑理念,增强组稿意识,建立一支稳定的高水平的核心作者队伍,充分发挥编委会的作用,争取学校的政策支持,这是组织高质量稿件的关键和保证。     

Curriculating Powerful Knowledge for Public Managers and Administrators

Abstract

Public Management and Public Administration are important professions for an emerging democracy such as South Africa. They operate as the interface between state and public and are responsible for enacting many of the government's policies and social initiatives. Concerns about a lack of capacity in the sector suggest that those in these roles may be unable to meet the demands of the workplace. This article reports on a study that responded to calls for the curriculum to address such concerns by interrogating the knowledge structures of Public Management and Public Administration programmes in higher education. Interviews, textbooks and course guides were analysed to illuminate the forms of knowledge being legitimated in curricula. The study found that the focus on knowledge, skills and processes might be at the expense of a focus on the development of particular attributes or dispositions in the knowers. Furthermore, the knowledge level focus was limited in that it was highly contextualised and “light” on theory, raising questions about the acquisition of powerful knowledge needed for good governance and critical engagement in the public sector. The study recommends that both programmes include more conceptual knowledge; exposure to critical powerful forms of knowledge; and the development of particular attributes and dispositions.     

英文社论语篇人际功能分析

运用韩礼德系统功能语法理论,从情态系统中的三个方面对六篇英文社论语篇进行了人际功能分析,揭示了该语体人际意义的特点。大量运用情态动词和带主观色彩的评论附加语、语气附加语和褒贬词语,体现了社论的语旨,即体现某种立场、观点,评述社会上的重大事件或问题。     

Optimal sizing of piezo-actuators for minimum-deflection design of frames under uncertain loads

Optimal piezo-actuator sizes and locations for a frame structure under bending load uncertainty are determined with the objective of minimizing the deflection under worst case of loading. The bending moments generated by the piezo-actuators are used for deflection control, i.e., to minimize the maximum deflection. The frame is subjected to a tip load which lies in an uncertainty domain with regard to its magnitude and direction. The specific uncertain loading studied in the present paper involves a load of given magnitude but of unknown direction, which should be determined to produce the highest deflection. The worst case of loading depends on the size and location of the actuators leading to a nested problem of optimization (design) and anti-optimization (uncertainty problem). Results are given for deterministic and uncertain loading conditions.     

浅议英语轭式修辞格

轭式修辞格(Zeugma)是一种用法较为独特的修辞手法。由于其使用不如其它的修辞方法那么普遍，所以很少有人去注意它。本文将对这一修辞格的分类及结构作一初步探讨。     

An Ode to Imre Lakatos: Quasi-Thought Experiments to Bridge the Ideal and Actual Mathematics Classrooms

This paper explores the wide range of mathematics content and processes that arise in the secondary classroom via the use of unusual counting problems. A universal pedagogical goal of mathematics teachers is to convey a sense of unity among seemingly diverse topics within mathematics. Such a goal can be accomplished if we could conduct classroom discourse that conveys the Lakatosian (thought-experimental) view of mathematics as that of continual conjecture-proof-refutation which involves rich mathematizing experiences. I present a pathway towards this pedagogical goal by presenting student insights into an unusual counting problem and by using these outcomes to construct ideal mathematical possibilities (content and process) for discourse. In particular, I re-construct the quasi-empirical approaches of six!4-year old students’ attempts to solve this unusual counting problem and present the possibilities for mathematizing during classroom discourse in the imaginative spirit of Imre Lakatos. The pedagogical implications for the teaching and learning of mathematics in the secondary classroom and in mathematics teacher education are discussed.     

世纪之交—出版高等教育的辨析与前瞻

从上个世纪的七十年代开始，我国的编辑出版高等教育在坎坷中不断发展，不论在理论上还是在实践中都为编辑出版学的学科建设作出了积极的贡献。但同时在理论体系、学科性质、师资力量等方面也存在着一些不容忽视的问题。因此，编辑出版学作为一门新兴的应用学科和一种复合型的学问，教学中要十分注重对学生实际操作能力的培养，注重知识的细化与合理，注重学生经营管理能力的养成，只有这样，才能面对新世纪的挑战，适应社会的需要与发展。     

如何提高英语四、六级的作文分数

写作是大学英语教学的难点之一,也是四、六级考试的重点之一。笔者认为在考试中,书写工整漂亮、词汇标新立异、造句与众不同以及布局独树一帜可以帮助考生提高四、六级的作文分数。