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基于Web服务的分布式仿真系统的双重访问控制

陈学勤,吴慧中,朱耀琴

《中国工程科学》 2009年 第11卷 第8期   页码 72-78

摘要:

随着分布式仿真系统与Web服务技术的结合日益紧密,以及功能与资源分离的愈加明显,导致大量仿真资源暴露于网络中,传统、单一的访问控制模型已无法应对

关键词: Web服务安全     双重访问控制     分布式仿真系统    

基于JavaBeans与安全Cookie的Web应用安全中间件

蔡准,孔凡玉,李大兴

《中国工程科学》 2005年 第7卷 第3期   页码 74-77

摘要:

Web应用中涉及信息安全的操作进行了讨论,设计了中间件层次构架,并在此基础上使用了JavaBeans与安全Cookie技术实现了安全中间件,从而通过硬件设备提高Web应用的效率及降低了开发难度。

关键词: JavaBeans     安全Cookie     中间件     PMI     基于角色访问控制    

HLA 分布仿真扩展研究

吴泽彬,吴慧中,李蔚清

《中国工程科学》 2008年 第10卷 第7期   页码 141-146

摘要:

分析HLA 扩展研究现状,针对HLA分布仿真互操作和重用的两个典型问题,结合Web 服务技术,将 传统HLA仿真应用框架进行去耦处理,提出一个HLA 分布仿真扩展体系结构,基于pRTI 和AXIS 引擎实现原 型系统,通过实例详细说明RTI 服务的封装部署以及RTI API 调用到SOAP 消息的映射。

关键词: HLA/RTI     分布仿真     Web 服务     SOAP     体系结构    

工业互联网安全公共服务能力提升路径研究

周昊,李俊,王冲华,尹丽波,赵千

《中国工程科学》 2021年 第23卷 第2期   页码 74-80 doi: 10.15302/J-SSCAE-2021.02.010

摘要:

工业互联网安全公共服务作为工业互联网安全能力输出的重要表现形式,已成为保障工业互联网健康发展的有效手段之一。通过梳理工业互联网安全公共服务发展现状,本文阐述了工业互联网安全公共服务的重要性,剖析了工业互联网安全公共服务发展面临的挑战;围绕基础资源库建设、信息共享交流、态势感知能力、应急响应机制等提出了工业互联网安全公共服务基础能力提升的思路与建议,从信息技术应用创新的兼容性适配、安全服务能力组合编排、标准与评价机制等方面提出了工业互联网安全创新发展的提升路径。最后从智能化安全服务服务集成化公共服务平台、新一代信息技术赋能等方面展望了工业互联网安全公共服务的发展前景,以期为新一代工业互联网安全的发展提供参考。

关键词: 工业互联网安全安全公共服务,网络安全,工业信息安全,创新发展    

保持隐私信息流安全性的服务组合演化方法 None

Huan-feng PENG, Zhi-qiu HUANG, Lin-yuan LIU, Yong LI, Da-juan FAN, Yu-qing WANG

《信息与电子工程前沿(英文)》 2018年 第19卷 第5期   页码 626-638 doi: 10.1631/FITEE.1700359

摘要: 隐私信息流安全服务组合部署后,用户隐私需求与成员服务的信誉度等级均可能发生变化,保持隐私信息流安全性是非常重要的演化需求。提出一种保持隐私信息流安全性的服务组合演化方法。分析基于Petri网的隐私数据项依赖关系,计算各成员服务的隐私数据使用集及安全范围,最后提出保持隐私信息流安全性的演化操作集。通过操作实施演化,避免演化后隐私信息流安全性的完整验证过程,提高演化效率。结果表明,与完整安全性验证过程相比,该方法有较高演化效率,能大大降低演化代价。

关键词: 服务组合;隐私信息流安全服务演化;Petri网    

Finite element analysis and structural design of pretensioned inverted T-beams with web openings

Hock Tian CHENG, Bashar S. MOHAMMED, Kamal Nasharuddin MUSTAPHA

《结构与土木工程前沿(英文)》 2009年 第3卷 第2期   页码 148-157 doi: 10.1007/s11709-009-0030-5

摘要: This paper presents the results of a research project aimed at providing standard circular web openings to the popular precast pretensioned inverted T-beam. Opening size and placement and required materials strengths were investigated. In this paper the nonlinear analysis and design of simply supported pretensioned inverted T-beam with circular web openings are presented. Two design parameters are varied: opening location and number of openings. The results from nonlinear finite element analysis were substantiated by test results from five pretensioned inverted T-beams with web opening and one solid beam. Good agreement is shown between the theoretical and the experimental results. The test results obtained from this investigation show that the performance of the specimens with web openings is almost identical to that of the specimen without web openings. A simple design method for pretensioned inverted T-beam with circular web openings is proposed.

关键词: prestressed concrete     inverted-T beam     web opening    

Torsional behavior of triangular web profile (TRIWP) steel section by experimental study

Fatimah DE’NAN,Hazwani HASAN,Mohd Hanim OSMAN,Sariffudin SAAD

《结构与土木工程前沿(英文)》 2016年 第10卷 第4期   页码 409-419 doi: 10.1007/s11709-016-0358-6

摘要: A triangular web profile (TriWP) is a modified section where the flanges are connected to a web plate of triangular profile. This study examined the torsional behavior of TriWP steel sections and compared to that of the flat web (FW) steel sections. Three types of specimen sizes were used: 180 mm × 75 mm × 5 mm × 2 mm, 200 mm × 100 mm × 8 mm × 6 mm, and 200 mm × 100 mm × 6 mm × 5 mm. All the specimens were loaded vertically until the maximum load was achieved and then the load was released. For both types of specimens, it was observed that the torsional rotation for bigger size [200 mm × 100 mm × 8 mm × 6 mm] were smaller than that of smaller size [180 mm × 75 mm × 5 mm × 2 mm] of the specimens. At the maximum torsional loading, the experimental result was compared to the theoretical calculation. The comparison showed that the percentage difference ranged from 1.10% to 16.80%. From the graph of torsional load versus rotational angle, the torsional rotation for all TriWP steel sections were smaller than that of the FW steel section under the same torsional loading i.e., 0.2 kNm and 1 kNm. The range between FW and TriWP were 3.74 to 71.83 at 0.2 kNm while 14.5 to 75.1 at 1.0 kNm. The findings were shown that the TriWP steel sections had better resistance against torsion in comparison to FW steel section.

关键词: corrugated web     i-beam     non uniform steel section     torsion resistance     torsion angle     triangular web profile steel section    

网络安全审查制度研究及建议

陈晓桦,何德全,王海龙,徐克付

《中国工程科学》 2016年 第18卷 第6期   页码 39-43 doi: 10.15302/J-SSCAE-2016.06.008

摘要:

网络安全作为国家安全的一部分,其安全检查与评估所依循的规章制度分布在国家安全审查或网络空间管理的政策制度中。本文着眼于国际上现行的网络安全审查相关制度,重点分析各国在信息技术产品和服务安全评估、关键信息基础设施安全评估与管理、供应链安全和背景安全调查等方面的做法,从法律法规、组织体系、运行模式、审查方法和支撑技术等方面研究建立我国的网络安全审查制度

关键词: 网络安全审查     信息技术产品和服务     关键信息基础设施     供应链安全     背景安全    

秦巴山脉区域生态系统服务重要性评价及生态安全格局构建

宋婷,李岱青,张林波,王光镇,高艳妮,杨春艳,冯朝阳,马欢

《中国工程科学》 2020年 第22卷 第1期   页码 64-72 doi: 10.15302/J-SSCAE-2020.01.007

摘要:

秦巴山脉地区生态系统的生态安全格局对维护我国中部地区生态系统结构健康、控制生态过程起着关键性的作用,构建合理的生态安全格局是保障该地区生态安全的有效措施本研究在对秦巴山脉地区水源涵养、物种多样性、生态固碳和土壤保持服务功能重要性评估的基础上,根据这四项生态服务功能在生态资产价值中所占比重赋予权重,结合生态系统敏感性分析结果,采用景观生态的源汇理论,利用热点分析工具识别秦巴山脉地区生态源地在此基础上结合区域内河流水系、关键物种分布特征、自然保护区分布等要素形成带状生态廊道和踏脚石生态廊道;最终形成由6 大重要生态斑块、10 条河流廊道、2 条生物通道,以及26 处踏脚石廊道组成的秦巴山脉地区生态安全格局基于生态系统服务功能重要性的生态安全格局构建,是在生态服务现状基础上提出的规划策略,可为秦巴山脉地区国家公园规划布局,区域生态保护规划和生态文明建设提供重要依据。

关键词: 秦巴山脉区域     生态系统服务     生态安全格局     生态源地     生态廊道    

Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

《结构与土木工程前沿(英文)》 2014年 第8卷 第4期   页码 325-336 doi: 10.1007/s11709-014-0080-1

摘要: In determining the shear capacity of reinforced concrete beams, current codes do not provide any calculation method to evaluate the influence of web horizontal reinforcement, although they exist as structural reinforcements (or skin reinforcement). The present paper comprises results of 11 reinforced concrete beams in an effort to investigate the influence of web horizontal reinforcement on the shear behavior of reinforced concrete beams. The primary design variables are the shear-span-depth ratio, different reinforcement ratio of stirrups and web horizontal reinforcement. Influence of web horizontal reinforcement on crack patterns and failure mode was studied. It was found that web horizontal reinforcement can increase the shear capacity of the beams and restrain growth of inclined cracks effectively. Test results are very valuable, as very few references of shear tests can be found focusing on the effect of web horizontal reinforcement on the shear capacity of the beams.

关键词: reinforced concrete beam     shear strength     web horizontal reinforcement     experiments    

Robust optimization of the billet for isothermal local loading transitional region of a Ti-alloy rib-web

Ke WEI, Xiaoguang FAN, Mei ZHAN, Miao MENG

《机械工程前沿(英文)》 2018年 第13卷 第3期   页码 376-384 doi: 10.1007/s11465-018-0500-3

摘要:

Billet optimization can greatly improve the forming quality of the transitional region in the isothermal local loading forming (ILLF) of large-scale Ti-alloy rib-web components. However, the final quality of the transitional region may be deteriorated by uncontrollable factors, such as the manufacturing tolerance of the preforming billet, fluctuation of the stroke length, and friction factor. Thus, a dual-response surface method (RSM)-based robust optimization of the billet was proposed to address the uncontrollable factors in transitional region of the ILLF. Given that the die underfilling and folding defect are two key factors that influence the forming quality of the transitional region, minimizing the mean and standard deviation of the die underfilling rate and avoiding folding defect were defined as the objective function and constraint condition in robust optimization. Then, the cross array design was constructed, a dual-RSM model was established for the mean and standard deviation of the die underfilling rate by considering the size parameters of the billet and uncontrollable factors. Subsequently, an optimum solution was derived to achieve the robust optimization of the billet. A case study on robust optimization was conducted. Good results were attained for improving the die filling and avoiding folding defect, suggesting that the robust optimization of the billet in the transitional region of the ILLF was efficient and reliable.

关键词: isothermal local loading forming     rib-web component     transitional region     robust optimization     dual response surface method    

共享信息的第二类网络

李幼平

《中国工程科学》 2002年 第4卷 第8期   页码 8-11

摘要:

基于Internet的万维网是当代共享信息的原创网络(primary web) ,它是一种隐含冲突的系统,难以摆脱带宽瓶颈的困扰,不支持用户数量的自由增长。提出的第二类信息共享网络(secondary web),通过广播镜像把许多网站的完整内容收存于家庭,然后按内容的语义直接提取满足个性需求的读物。

关键词: 万维网     第二类共享网络     内容的语义     带宽瓶颈    

使用信息流分析检测Web服务组合隐性信息泄露 None

Jia-xin JIANG, Zhi-qiu HUANG, Wei-wei MA, Yan CAO

《信息与电子工程前沿(英文)》 2018年 第19卷 第4期   页码 494-502 doi: 10.1631/FITEE.1601371

摘要: 信息泄露会破坏Web服务组合业务流程对某些策略的遵从性,是Web服务组合中的一个主要问题。提出一种基于信息流分析的有效的自动化方法用于检测业务流程执行语言(BPEL)中的隐性信息泄露。以Petri网中基于库所的无干扰性概念为基础,使用Petri网可达图分析Petri网干扰性,检测Web服务组合中的隐性信息泄露,并通过一个案例说明该方法在具体BPEL工作流中的应用。

关键词: 信息流分析;业务流程执行语言;Petri网;干扰性    

A sampling method based on URL clustering for fast web accessibility evaluation

Meng-ni ZHANG,Can WANG,Jia-jun BU,Zhi YU,Yu ZHOU,Chun CHEN

《信息与电子工程前沿(英文)》 2015年 第16卷 第6期   页码 449-456 doi: 10.1631/FITEE.1400377

摘要: When evaluating the accessibility of a large website, we rely on sampling methods to reduce the cost of evaluation. This may lead to a biased evaluation when the distribution of checkpoint violations in a website is skewed and the selected samples do not provide a good representation of the entire website. To improve sampling quality, stratified sampling methods first cluster web pages in a site and then draw samples from each cluster. In existing stratified sampling methods, however, all the pages in a website need to be analyzed for clustering, causing huge I/O and computation costs. To address this issue, we propose a novel page sampling method based on URL clustering for web accessibility evaluation, namely URLSamp. Using only the URL information for stratified page sampling, URLSamp can efficiently scale to large websites. Meanwhile, by exploiting similarities in URL patterns, URLSamp cluster pages by their generating scripts and can thus effectively detect accessibility problems from web page templates. We use a data set of 45 web sites to validate our method. Experimental results show that our URLSamp method is both effective and efficient for web accessibility evaluation.

关键词: Page sampling     URL clustering     Web accessibility evaluation    

Ultimate load analysis of pretensioned inverted T-beams with circular web openings

Hock Tian CHENG , Bashar S. MOHAMMED , Kamal Nasharuddin MUSTAPHA ,

《结构与土木工程前沿(英文)》 2009年 第3卷 第3期   页码 262-271 doi: 10.1007/s11709-009-0031-4

摘要: The provision of transverse openings in floor beams to facilitate the passage of utility pipes and service ducts not only results in a more systematic layout of pipes and ducts, it also translates into substantial economic savings in the construction of a multi-storey building. In this paper, ultimate load analysis of statically loaded simply supported pretensioned inverted T-beams with circular web openings is presented. Major findings relevant to ultimate load analysis of pretensioned beams with circular web openings are summarized. An attempt has been made to answer the frequently asked questions related to ultimate load analysis on multiple circular web openings. It has been shown that the analysis method for pretensioned beams with multiple large circular web openings can be further simplified without sacrificing rationality.

关键词: pretensioned inverted T-beam     web opening    

标题 作者 时间 类型 操作

基于Web服务的分布式仿真系统的双重访问控制

陈学勤,吴慧中,朱耀琴

期刊论文

基于JavaBeans与安全Cookie的Web应用安全中间件

蔡准,孔凡玉,李大兴

期刊论文

HLA 分布仿真扩展研究

吴泽彬,吴慧中,李蔚清

期刊论文

工业互联网安全公共服务能力提升路径研究

周昊,李俊,王冲华,尹丽波,赵千

期刊论文

保持隐私信息流安全性的服务组合演化方法

Huan-feng PENG, Zhi-qiu HUANG, Lin-yuan LIU, Yong LI, Da-juan FAN, Yu-qing WANG

期刊论文

Finite element analysis and structural design of pretensioned inverted T-beams with web openings

Hock Tian CHENG, Bashar S. MOHAMMED, Kamal Nasharuddin MUSTAPHA

期刊论文

Torsional behavior of triangular web profile (TRIWP) steel section by experimental study

Fatimah DE’NAN,Hazwani HASAN,Mohd Hanim OSMAN,Sariffudin SAAD

期刊论文

网络安全审查制度研究及建议

陈晓桦,何德全,王海龙,徐克付

期刊论文

秦巴山脉区域生态系统服务重要性评价及生态安全格局构建

宋婷,李岱青,张林波,王光镇,高艳妮,杨春艳,冯朝阳,马欢

期刊论文

Experimental study on shear behavior of reinforced concrete beams with web horizontal reinforcement

Dong XU,Yu ZHAO,Chao LIU

期刊论文

Robust optimization of the billet for isothermal local loading transitional region of a Ti-alloy rib-web

Ke WEI, Xiaoguang FAN, Mei ZHAN, Miao MENG

期刊论文

共享信息的第二类网络

李幼平

期刊论文

使用信息流分析检测Web服务组合隐性信息泄露

Jia-xin JIANG, Zhi-qiu HUANG, Wei-wei MA, Yan CAO

期刊论文

A sampling method based on URL clustering for fast web accessibility evaluation

Meng-ni ZHANG,Can WANG,Jia-jun BU,Zhi YU,Yu ZHOU,Chun CHEN

期刊论文

Ultimate load analysis of pretensioned inverted T-beams with circular web openings

Hock Tian CHENG , Bashar S. MOHAMMED , Kamal Nasharuddin MUSTAPHA ,

期刊论文