从语法隐喻的角度看英文歌词

歌词的创作常常通过利用隐喻的突出优势,以音乐为载体将有相似性或连续性的事物展现出来,从而达到美好的艺术效果,给听众带来听觉及心灵的双重享受。本文从认知的角度对英文歌曲歌词中的隐喻进行浅析,试图对其进行归类,并分析隐喻给歌词带来的独特的表达效果。     

欠发达资源富集区产业结构演进及其目标取向与主体效应

在国家、省域及案例地区等区域尺度上,通过计量经济模型,利用SPSS15.0软件测算了各主体收入变化及其主要影响因素,对比分析了经济发展程度和资源富集程度不同的区域其产业结构对主体收入的影响差异,以探寻欠发达资源富集区产业结构演进与主体收入间相互作用规律,以及不同发展阶段的结构演进目标取向差异。通过比较分析得出：发展中国家和发达国家间产业结构演进与主体收入水平差异显著;欠发达资源富集省域与沿海经济发达省域产业结构差异显著;案例区（贵州省毕节地区）产业结构演进中目标取向及结构效应呈阶段性特征,且经济发展已到转型临界点。     

A novel dependency language model for information retrieval

This paper explores the application of term dependency in information retrieval (IR) and proposes a novel dependency retrieval model. This retrieval model suggests an extension to the existing language modeling (LM) approach to IR by introducing dependency models for both query and document. Relevance between document and query is then evaluated by reference to the Kullback-Leibler divergence between their dependency models. This paper introduces a novel hybrid dependency structure, which allows integration of various forms of dependency within a single framework. A pseudo relevance feedback based method is also introduced for constructing query dependency model. The basic idea is to use query-relevant top-ranking sentences extracted from the top documents at retrieval time as the augmented representation of query, from which the relationships between query terms are identified. A Markov Random Field (MRF) based approach is presented to ensure the relevance of the extracted sentences, which utilizes the association features between query terms within a sentence to evaluate the relevance of each sentence. This dependency retrieval model was compared with other traditional retrieval models. Experiments indicated that it produces significant improvements in retrieval effectiveness.     

近十年我国智慧图书馆研究综述

[目的/意义]结合我国智慧图书馆研究活动的早期过程,把握我国智慧图书馆研究的现状及发展趋势。[方法/过程]本文利用中国知网、万方数据知识服务平台、维普中文科技期刊等资源对我国2008-2017年关于智慧图书馆的研究论文进行检索,对结果进行总结分析。[结果/结论]研究发现,我国目前针对智慧图书馆研究和建设虽然发展迅速,并取得一定的成果,但仍处于探索及初步发展阶段,理论体系尚不成熟,研究领域有待进一步拓宽。     

Social networks and coordination performance of distributed software development teams

In this study, we explore the coordination performance of the geographically distributed software development teams by exploring OSS (Open Source Software) development dataset available through SourceForge.com. OSS team structures have traditionally been geographically dispersed and therefore, the coordination of post release activities such as testing efforts have been carried out by means of communication via electronic forms, such as email or message boards and forums. In our current communication-enriched environment, best practices for coordination are adopted by all software projects yet some still fail to achieve their target performance. Does team structure have any bearing on the performance outcome of the project? How does the communication between teams and their external parties affect ultimate success or failure of projects? We seek to answer above questions by applying existing theories and analytical methods from social networks for exploring the coordination performance of defect management activities found in OSS projects. We propose social networks based theoretical model for exploring distributed coordination structure and apply that for the case of OSS defect management process for exploring the structural properties, which induce the greatest coordination performance. The outcome of our suggest that there is correlation between certain network measures such as density, centrality and betweenness and coordination performance measures of defect management systems such as quality and timeliness.     

土壤-植被-大气系统水和热传输机理及区域蒸散模型

在不同空间和时间尺度上建立了估算土壤 植被 大气系统水、热传输的模型 ,并且在华北平原中国科学院两个农业生态试验站设计了 3个试验 ,验证模型的精度和有效性 .第一个模型是基于瞬时通量观测基础上建立的植被冠层光合 导度 蒸散耦合模型 ,它模拟的结果与涡度相关系统测定结果比较一致 ;第二个模型为一维 3层的土壤水量平衡模型 ,此模型成功用于模拟 1 998— 2 0 0 3年度太行山山前平原不同灌溉条件下的土壤水分深层入渗和蒸散过程 ;第三个模型为区域能量通量和日蒸散模型 ,它基于卫星遥感数据和地面同步观测而建立 ,本模型可以监测区域地表的干旱状况 ,用于估算区域能量通量和日蒸散 .     

生成学习理论视角下翻译在二语习得中的作用研究

翻译与二语习得关系的研究普遍受到我国外语教师及学者们的关注,基于不同角度的研究给我们呈现了这一课题的潜在研究价值。本文拟从建构主义生成学习理论视角,分析翻译在二语习得中的作用：为学习者通过翻译更好地习得二语提供理论支撑。也为该课题的研究展示一个新的切入点.     

面向交通运输体系构建的货运量定量预测方法研究

文中研究面向交通运输体系构建的交通货运量的定量预测方法,分别对货运量预测中常用的时间序列预测法、趋势外推预测法、相关回归预测法和灰色预测法进行了简要的介绍说明,时间序列预测法假设预测对象仅与时间有关,是对外部因素复杂作用的简化;趋势外推法比较适合中、长期预测。使用回归分析等预测方法要考虑到各种影响因素;灰色预测法多适用于近期货运量预测,对于远期预测偏差较大。     

信息与计算科学专业代数学课程教学的探讨

代数学是信息与计算科学专业的一门重要专业课,自1998年我校成立信息与计算科学专业以来,我们一直给学生开设了该课程.本文我们根据自己多年的教学和科研积累,就代数学这门课程的教学问题阐述自己的一些观点.     

绿色供应链管理与绿色创新——基于中国制造业企业的实证研究

通过将企业绿色供应链管理分为内部环境管理、生态设计、绿色采购、投资回收和消费者协作五类,将绿色创新分为绿色产品创新和绿色流程创新,研究了绿色供应链管理与绿色创新之间的关系。以中国210家制造业企业为研究样本,通过调查问卷的方式收集数据,研究发现企业绿色供应链管理活动中的内部环境管理、生态设计和企业与消费者的协作对企业的绿色产品创新和绿色流程创新具有显著的正向影响作用。