期刊文献+
共找到381篇文章
< 1 2 20 >
每页显示 20 50 100
The Project “Study on Technology for Manufacture of High-Spheroidicity FCC Catalysts” Passed SINOPEC's Appraisal
1
《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2015年第1期23-23,共1页
On January 7, 2015 the project "Study on the technology formanufacture of high-spheroidicity FCC catalysts "undertakenby the SINOPEC Research Institute of Petroleum Processing(RIPP) has passed the technical apprai... On January 7, 2015 the project "Study on the technology formanufacture of high-spheroidicity FCC catalysts "undertakenby the SINOPEC Research Institute of Petroleum Processing(RIPP) has passed the technical appraisal organized by theScience and Technology Division of the Sinopec Corp. 展开更多
关键词 FCC The Project Passed sINOPEC’s appraisal study on Technology for Manufacture of High-spheroidicity FCC Catalysts
下载PDF
The Project “Development and Commercial Application of Technology for Ultra-deep HDS of Diesel(RTS)” Passed SINOPEC's Appraisal
2
《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2015年第1期47-47,共1页
On December 9, 2014 the scientific research project "Developmentand commercial application of technology forultra-deep HDS of diesel (RTS)" jointly performed bythe SINOPEC Research Institute of Petroleum Processin... On December 9, 2014 the scientific research project "Developmentand commercial application of technology forultra-deep HDS of diesel (RTS)" jointly performed bythe SINOPEC Research Institute of Petroleum Processing(RIPP), the Yanshan Petrochemical Branch Company(YPBC), the Maoming Petrochemical Branch Companyand the Guangzhou Petrochemical Branch Company haspassed in Beijing the technical appraisal organized by theScience and Technology Division of the Sinopec Corp. 展开更多
关键词 HDs The Project Development and Commercial Application of Technology for Ultra-deep HDs of Diesel Passed sINOPEC’s appraisal deep RTs
下载PDF
The Project “Development and Application of FCC Additive for Maximization of Propylene and Isobutylene” Passed SINOPEC's Appraisal
3
《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2014年第1期70-70,共1页
The research project'Development and application of FCC additive for maximization of propylene and isobutylene'jointly undertaken by RIPP,the Baling Petrochemical Company(BPC)and the SINOPEC
关键词 FCC Development and Application of FCC Additive for Maximization of Propylene and Isobutylene Passed sINOPEC’s appraisal The Project
下载PDF
Foreign Businessmen's Appraisal of China's Investment Environment
4
《China's Foreign Trade》 1999年第4期47-47,共1页
关键词 Foreign Businessmen’s appraisal of China’s Investment Environment
下载PDF
Discourse Prosody Analysis of Donald Trump's Victory Speech Based on Appraisal Theory
5
作者 闫开伦 《海外英语》 2017年第11期220-221,共2页
Presidential victory speeches are intentionally employed to achieve certain communicative goals.Based on Appraisal Theory,this paper attempts to reveal evaluation features and to explore realizations and functions of ... Presidential victory speeches are intentionally employed to achieve certain communicative goals.Based on Appraisal Theory,this paper attempts to reveal evaluation features and to explore realizations and functions of prosodies in Trump’s victory speech.The research results prove that an appreciation of the functioning of discourse prosodies can better facilitate our understanding of the stances of writers or speakers.The present study contributes to specifying features of appraisal resources in presidential victory speeches and sheds light on the function of discourse prosodies. 展开更多
关键词 PROsODY appraisal system attitude resources graduation resources Trump’s victory speech
下载PDF
Customization Product Design Based on User's Emotion and Needs 被引量:3
6
作者 金纯 张春林 刘文枝 《Defence Technology(防务技术)》 SCIE EI CAS 2005年第2期245-249,共5页
The paper presents a design method that ensures the ingenuity of the product form as well as the whole and exact expression of user’s needs. The key idea is to establish an automatic design system which can transform... The paper presents a design method that ensures the ingenuity of the product form as well as the whole and exact expression of user’s needs. The key idea is to establish an automatic design system which can transform the user’s language needs into the product features in real-time. A rifle was taken as a research instance and soldiers were chosen as evaluation customers. The theory of fuzzy set and semantic difference are adopted to evaluate the relationship between user’s needs and product features as well as their alternatives. FAHP (fuzzy analytic hierarchy process) is utilized to judge the user’s satisfactory forms. This method can also be applied to other product form designs. 展开更多
关键词 users needs product form CUsTOMIZATION fuzzy number
下载PDF
Use of methotrexate in inflammatory bowel disease in 2014: A User's Guide 被引量:4
7
作者 Arun Swaminath Raja Taunk Garrett Lawlor 《World Journal of Gastrointestinal Pharmacology and Therapeutics》 CAS 2014年第3期113-121,共9页
Methotrexate has been used an immunomodulator in many autoimmune diseases,including inflammatory bowel disease. However,many physicians are unfamiliar or uncomfortable with its use in the management of inflammatory bo... Methotrexate has been used an immunomodulator in many autoimmune diseases,including inflammatory bowel disease. However,many physicians are unfamiliar or uncomfortable with its use in the management of inflammatory bowel disease. We summarize the data for use of methotrexate in common clinical scenarios:(1) steroid dependant Crohn's disease(CD);(2) maintenance of remission in steroid free CD;(3) azathioprine failures in CD;(4) in combination therapy with Anti-TNF agents in CD;(5) decreasing antibody formation to Anti-TNF therapy in CD;(6) management of fistulizing disease in CD; and(7) as well as induction and maintenance of remission in ulcerative colitis. An easy to use algorithm is provided for the busy clinician to access and safely prescribe methotrexate for their inflammatory bowel disease patients. 展开更多
关键词 METHOTREXATE Inflammatory BOWEL DIsEAsE Crohn’s DIsEAsE ULCERATIVE colitis IMMUNOMODULATORs METHOTREXATE users GUIDE
下载PDF
Frequent Itemset Mining of User’s Multi-Attribute under Local Differential Privacy 被引量:2
8
作者 Haijiang Liu Lianwei Cui +1 位作者 Xuebin Ma Celimuge Wu 《Computers, Materials & Continua》 SCIE EI 2020年第10期369-385,共17页
Frequent itemset mining is an essential problem in data mining and plays a key role in many data mining applications.However,users’personal privacy will be leaked in the mining process.In recent years,application of ... Frequent itemset mining is an essential problem in data mining and plays a key role in many data mining applications.However,users’personal privacy will be leaked in the mining process.In recent years,application of local differential privacy protection models to mine frequent itemsets is a relatively reliable and secure protection method.Local differential privacy means that users first perturb the original data and then send these data to the aggregator,preventing the aggregator from revealing the user’s private information.We propose a novel framework that implements frequent itemset mining under local differential privacy and is applicable to user’s multi-attribute.The main technique has bitmap encoding for converting the user’s original data into a binary string.It also includes how to choose the best perturbation algorithm for varying user attributes,and uses the frequent pattern tree(FP-tree)algorithm to mine frequent itemsets.Finally,we incorporate the threshold random response(TRR)algorithm in the framework and compare it with the existing algorithms,and demonstrate that the TRR algorithm has higher accuracy for mining frequent itemsets. 展开更多
关键词 Local differential privacy frequent itemset mining users multi-attribute
下载PDF
User’s Relevance of PIR System Based on Cloud Models 被引量:1
9
作者 康海燕 樊孝忠 《Journal of Beijing Institute of Technology》 EI CAS 2006年第2期181-185,共5页
A new method to evaluate fuzzily user's relevance on the basis of cloud models has been proposed. All factors of personalized information retrieval system are taken into account in this method. So using this method f... A new method to evaluate fuzzily user's relevance on the basis of cloud models has been proposed. All factors of personalized information retrieval system are taken into account in this method. So using this method for personalized information retrieval (PIR) system can efficiently judge multi-value relevance, such as quite relevant, comparatively relevant, commonly relevant, basically relevant and completely non-relevant, and realize a kind of transform of qualitative concepts and quantity and improve accuracy of relevance judgements in PIR system. Experimental data showed that the method is practical and valid. Evaluation results are more accurate and approach to the fact better. 展开更多
关键词 personalized information retrieval (PIR) cloud model user's relevance fuzzy evaluation
下载PDF
A Dynamic Bandwidth Allocation Solution Based on User Behavior and Software Defined EPS
10
作者 Bo Zhu Hao Jiang +2 位作者 Lihua Wu Shuwen Yi Hai Wang 《China Communications》 SCIE CSCD 2016年第9期80-90,共11页
For telecommunication operators, how to improve the utilization of bandwidth resources is always a problem which worthy of study, nowadays, this issue has become more and more important, since the traffic load burstin... For telecommunication operators, how to improve the utilization of bandwidth resources is always a problem which worthy of study, nowadays, this issue has become more and more important, since the traffic load bursting in the mobile Internet. So the key to solving this problem is that we need to find a kind of traffic model to predict the traffic load that users need. According to the predicted traffic load to allocate bandwidth to each base station dynamically.But the traffic consumption behavior of a single base station is random, it is difficult to predict[ 1 ]. For this reason, we based on reality that, when the user moves, it may get traffic load from different base stations, therefore, there will have some kind of relationship between those base stations.We use this relationship to establish a kind of Spatial Collaborative Network.consequently, we make use of stability algorithm to divided those base station cluster into different communities, According to the traffic load usage rules which these communities indicated to us, we get a traffic model.At the same time, we studied bow to use this traffic model in the future networks to dynamically allocate bandwidth resources, then we propose a new kind of EPS architecture based on SDN, on this platform, we can deploy our strategy through it's programmable interface.Finally, we designed an experiment to test the performance of our dynamic strategy, and the result shows that our method enables bandwidth utilization has been greatly improved. 展开更多
关键词 bandwidth utilization user's behaviour traffic module sDN
下载PDF
Method of Consistency Judgment for App Software’s User Comments
11
作者 Meng Ran Ying Jiang +1 位作者 Qixin Xiang Jiaman Ding 《国际计算机前沿大会会议论文集》 2016年第1期121-123,共3页
With the popularity of mobile intelligent terminal, user comments of App software is viewed as one of the research interests of social computing. Faced with the massive App software, most users usually view the other ... With the popularity of mobile intelligent terminal, user comments of App software is viewed as one of the research interests of social computing. Faced with the massive App software, most users usually view the other users’ comments and marks to selecting the desired App software. Due to the freedom and randomness of the network comments, the inconsistence between the user’s comment and mark makes it difficult to choose App software. This paper presents a method by analyzing the relationships among user’s comment information, the user’s mark and App software information. Firstly, the consistency between user’s comment information and App software information is judged. Then, through analyzing the grammar relationships among the feature-words, adverbs and the feature-sentiment-words in App software’s feature-sentimentword- pairs, the user’s emotional tendency about App software is quantified quantified combining with the dictionary and the network sentiment words. After calculating the user’s comprehensive score of App software, the consistency of App software’s user comment is judged by comparing this score and the user’s mark. Finally, the experimental results show that the method is effective. 展开更多
关键词 social computing APP software The CONsIsTENCY of user COMMENT users COMMENT information users mark Featuresentiment-word-pairs Network sentiment WORD
下载PDF
Changes in the Structure of China's Net Users
12
《China's Foreign Trade》 2000年第5期44-44,共1页
关键词 Changes in the structure of China’s Net users
下载PDF
Analyzing and Appraising Country Risks What we should know when talking about China Textile's Going abroad Strategy
13
作者 JIN, Bo 《China Textile》 2007年第10期52-63,共12页
The new millennium has witnessed the stunning growth of Chinese textile industry, China has become the largest textile producer and textile exporter in the world. With exports of Chinese textile products outnumbered t... The new millennium has witnessed the stunning growth of Chinese textile industry, China has become the largest textile producer and textile exporter in the world. With exports of Chinese textile products outnumbered those of all the other nations, various forms of trade frictions against Chinese textile products have arisen. 展开更多
关键词 Analyzing and appraising Country Risks What we should know when talking about China Textile’s Going abroad strategy
下载PDF
Analysis of New Senior English for China Student’s Book 1
14
作者 Xia Qian 《语言与文化研究》 2024年第4期128-132,共5页
This article will firstly discuss the context overview of English teaching and learning in China. Under thiscircumstance, a problematic element will be examined of the New Senior English for China Student’s Book 1 an... This article will firstly discuss the context overview of English teaching and learning in China. Under thiscircumstance, a problematic element will be examined of the New Senior English for China Student’s Book 1 and critical appraisal ofhow this element relates to other elements of curriculum development will be analyzed. The recommended changes and demonstrationmechanisms for evaluating the changes are put forward in the last two parts. 展开更多
关键词 New senior English for China student’s Book 1 Assessment Critical appraisal Curriculum development CHANGEs
下载PDF
B/S模式下OA系统的权限控制设计与实现 被引量:25
15
作者 宋维平 曾一 +2 位作者 涂争光 高旻 李颖 《计算机工程与应用》 CSCD 北大核心 2004年第35期199-201,210,共4页
通过分析现有权限控制模型,结合B/S模式的特征,论文提出了改进的权限控制模型,与在OA系统中的具体实现方法。
关键词 用户管理 权限控制模型 B/s模式 OA系统
下载PDF
一种基于树型结构的B/S系统权限控制方法 被引量:17
16
作者 李南妮 张璟 李军怀 《计算机应用研究》 CSCD 北大核心 2005年第10期128-130,共3页
在应用RBAC技术的基础上研究了基于树型结构下的B/S系统中权限控制方法,通过系统资源树的生成,提出了用户权限数据报的概念及其设计思想,并在实践中加以应用。实现了系统全局资源的安全访问控制,增加了系统的灵活性。
关键词 基于角色的访问控制 B/s 系统资源树 用户权限
下载PDF
基于B/S架构的多用户在线程序评判系统设计与实现 被引量:8
17
作者 乔少杰 杨燕 +2 位作者 葛永明 张翠芳 戴齐 《计算机工程与科学》 CSCD 北大核心 2011年第S1期58-61,共4页
针对现有在线程序评判系统存在的判题效率和安全性问题,本文在分析多用户在线评判系统的功能需求基础上,提出了一种基于B/S架构采用Struts+Spring+Hibernate(SSH)组合框架的多用户在线程序评判系统,介绍了系统的程序评判原理及采用的安... 针对现有在线程序评判系统存在的判题效率和安全性问题,本文在分析多用户在线评判系统的功能需求基础上,提出了一种基于B/S架构采用Struts+Spring+Hibernate(SSH)组合框架的多用户在线程序评判系统,介绍了系统的程序评判原理及采用的安全机制。该系统不但可以用于ACM程序设计等比赛,而且可以为程序设计课程教学提供很好的辅助实验平台支持。 展开更多
关键词 在线程序评判 B/s架构 多用户 安全机制
下载PDF
B/S模式的电厂耗差分析系统权限管理的实现 被引量:11
18
作者 杨官平 陈鸿伟 李永华 《计算机工程与设计》 CSCD 北大核心 2006年第3期497-499,503,共4页
采用ASP.NET技术,应用用户/岗位角色/权限的模型,实现了B/S模式的电厂耗差分析系统权限管理。阐述了权限管理的设计原则和设计方法、权限管理的数据库设计、用户授权的实现和用户权限控制的实现。在开发过程中,使用C#语言,开发了权限管... 采用ASP.NET技术,应用用户/岗位角色/权限的模型,实现了B/S模式的电厂耗差分析系统权限管理。阐述了权限管理的设计原则和设计方法、权限管理的数据库设计、用户授权的实现和用户权限控制的实现。在开发过程中,使用C#语言,开发了权限管理组件,提高了开发效率,简化了权限管理,用户使用灵活方便。 展开更多
关键词 权限管理 耗差分析 AsRNET技术 B/s模式 角色 用户
下载PDF
基于技术扩散S曲线的3G技术市场推广策略研究 被引量:7
19
作者 黄梦璇 宋艳 +1 位作者 刘峰 蒋冲雨 《研究与发展管理》 CSSCI 北大核心 2011年第2期26-32,共7页
3G技术市场快速推广是电信运营商目前需着力解决的现实问题.从技术扩散S曲线出发,通过问卷调查结果,分析论证我国3G技术扩散还处在初期阶段,需要精确定位初期阶段的目标用户并按照其特征来制定推广策略,指出运营商的现有推广策略针对性... 3G技术市场快速推广是电信运营商目前需着力解决的现实问题.从技术扩散S曲线出发,通过问卷调查结果,分析论证我国3G技术扩散还处在初期阶段,需要精确定位初期阶段的目标用户并按照其特征来制定推广策略,指出运营商的现有推广策略针对性不强,并在此基础上对这些方案提出改进建议,为3G技术市场的发展提供参考借鉴. 展开更多
关键词 技术扩散s曲线 3G技术 初期目标用户 推广策略
下载PDF
一种改进的CSGC频谱分配算法 被引量:3
20
作者 滕志军 李可 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2014年第11期119-122,共4页
基于图论着色的频谱分配算法未充分考虑用户实际带宽需求,针对这一问题,本文在原算法基础上提出了一种改进的CSGC频谱分配算法.该算法引入了空闲频谱和用户请求两个时间因子,通过设置用户优先级函数,在进行二次频谱分配时最大限度地满... 基于图论着色的频谱分配算法未充分考虑用户实际带宽需求,针对这一问题,本文在原算法基础上提出了一种改进的CSGC频谱分配算法.该算法引入了空闲频谱和用户请求两个时间因子,通过设置用户优先级函数,在进行二次频谱分配时最大限度地满足用户需求.仿真结果表明,该算法不仅保留了原CSGC算法的性能,而且大幅度提高了频谱利用率. 展开更多
关键词 图论 频谱 分配 用户优先级
下载PDF
上一页 1 2 20 下一页 到第
使用帮助 返回顶部