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Management of Associations in the IRBAC 2000 Model

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Wuhan University Journal of Natural Sciences 2006年第5期11卷 1262-1266页

作者： LIAO Junguo HONG Fan zhang zhaoli LIU Ming College of Computer Science and Technology Huazhong University of Science and Technology Wuhan411201 Hubei China College of Computer Science and Technology HunanUniversity of Science and Technology Xiangtan 411201Hunan China

Secure interaction and interoperability between two or more administrative domains is a major concern. The IRBAC 2000 model accomplishes secure interaction and interoperability by flexibly dynamic inter-domain role translations. Associations are the key element of the IRBAC 2000 model, which have a great impact on security and efficiency of dynamic role translations. Therefore, it is a crucial problem how to manage the associations in the IRBAC 2000 model. There are two cases under which some matters will emerge. One is where conflicting associations may result in a security hazard. Another is where redundant associations may reduce the efficiency of dynamic role translations and increase the difficulty of management of associations. The formal definitions on conflicting associations and redundant associations are given, and the methods are discusses to judge whether there are conflicting associations or redundant associations in IRBAC 2000 model. The protective mechanism is presented, which utilizes prerequisite conditions to prevent conflicting or redundant associations from appearing in IRBAC 2000 model.

关键词： IRBAC 2000 model conflicting associations redundant associations prerequisite conditions

Blind spectral deconvolution algorithm for Raman spectrum with Poisson noise

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Photonics Research 2014年第6期2卷 168-171页

作者： Hai Liu zhaoli zhang Jianwen Sun Sanya Liu National Engineering Research Center for E-Learning Central China Normal UniversityWuhan 430079China

A blind deconvolution algorithm with modified Tikhonov regularization is *** improve the spectral resolution,spectral structure information is incorporated into regularization by using the adaptive term to distinguish the spectral structure from other *** proposed algorithm can effectively suppress Poisson noise as well as preserve the spectral structure and detailed ***,it becomes more robust with the change of the regularization *** results on simulated and real degraded Raman spectra are *** recovered Raman spectra can easily extract the spectral features and interpret the unknown chemical mixture.

关键词： parameter. regularization spectral

Identification of MUC1 as a Novel Oncogene of Fusobacterium nucleatum-Associated Colorectal Cancer by a Combined Bioinformatics and Experimental Approach

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Journal of Cancer Therapy 2024年第10期15卷 362-380页

作者： Xinli Ye Shouru zhang zhaoli zhang Jie Zou Xiaojie Gao Department of Gastrointestinal Tumor Center Chongqing University Cancer Hospital Chongqing China Nursing Department Chongqing Cancer Hospital Chongqing China Department of Hepatobiliary Surgery Childrens Hospital of Chongqing Medical University Chongqing China

Background: Fusobacterium nucleatum can cause opportunistic and chronic infections and has recently been shown to be involved in colorectal cancer. However, the speciﬁc mechanism by which F. nucleatum induces colorectal carcinoma remains unclear. Methods: We downloaded the GSE110223, GSE110224, GSE113513 and GSE122183 microarray datasets from the Gene Expression Omnibus (GEO) database. Identification of differentially expressed genes (DEGs) related to F. nucleatum in CRC by overlapping data sets was performed. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genome pathway (KEGG) analyses were used for enrichment analysis. Moreover, Cytoscape software constructed a protein-protein interaction (PPI) network of differentially expressed genes. Finally, western blot and RT-qPCR analysis identified the relative protein and mRNA expression of hub genes in the cell model. Results: In total, 118 DEGs in F. nucleatum-associated CRC were screened from nonoverlapping microarray data, among which 20 upregulated and 98 downregulated DEGs were identified. The 118 DEGs were significantly correlated with diverse functions and pathways. The hub gene MUC1 had higher centrality scores in the PPI network, and the top 5 closely interacting hub genes, SLC7A11, AGR2, KRT18, CARTPT and TSPYL5, were identified. Conclusion: Our evidence suggests that the identified DEGs associated with F. nucleatum enhance our comprehension of the molecular Mechanisms underlying the tumorigenesis and development of CRC and might be used as molecular targets and diagnostic biomarkers for the treatment of CRC.

关键词： CRC F. nucleatum DEGs MUC1

Effects of Poisonous and Harmful Elements Brought about by Coal Mining on Water Environment in Zibo Coal Mine, Shandong Province, China

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Journal of Earth Science 2000年第3期19卷 81-86页

作者： Shen zhaoli zhang Jianli He Jiangtao Zhong Zuoshen Tang Minggao Department of Water Resources and Environments, China University of Geosciences, Beijing 100083, China

Coal resources are very abundant in Zibo, Shandong Province, China. A lot of mining sewages are discharged during the coal mining. The mining sewage is characterized by high ρ (SO 2- 4 ), hardness and totally dissolved solids (TDS). Mining sewage in the southern Zibo is acidic, where heavy metals and benzene are detected. The Xiaofu River is polluted when mining sewage flows into it, so that the Mengshan Reservoir is polluted by Xiaofu River. The groundwater is polluted in Zichuan by the leaking of the Xiaofu River. The polluted Xiaofu River is thus used to irrigate the farmland in Mashang Mengshui zone. The irrigation water affects the quality of shallow groundwater. The laboratory soil column test shows that SO 2- 4, Cl -, Ca 2+ and Mg 2+ can migrate through vadose soil, especially SO 2- 4 and Cl -.

关键词： mining sewage surface water pollution groundwater pollution.

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敦煌莫高窟北朝兽面图像浅议

敦煌研究 2022年第3期 21-30页

作者：张兆莉兰州大学敦煌学研究所甘肃兰州730020

敦煌莫高窟北朝后期第248、249、285窟所出现的兽面图像,是在中原新风影响下,不同文化背景的工匠在已有佛教艺术传统上,融合河西地区魏晋十六国壁画墓的照墙兽面构成法则和墓室壁画创作传统,产生的具有敦煌地域特色的新样式,其本质是以... 详细信息

敦煌莫高窟北朝后期第248、249、285窟所出现的兽面图像,是在中原新风影响下,不同文化背景的工匠在已有佛教艺术传统上,融合河西地区魏晋十六国壁画墓的照墙兽面构成法则和墓室壁画创作传统,产生的具有敦煌地域特色的新样式,其本质是以汉代艺术语言组织画面的方式来改造外来的佛教主题图像,在信仰的形式和内容方面体现了向中原及本土转化的历史性变革。

关键词：莫高窟兽面中原新风魏晋墓壁画

核桃楸皮提取物对人肝癌细胞SMMC-7721的增殖抑制作用及对细胞周期的影响（英文）

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林产化学与工业 2017年第3期37卷 136-140页

作者：梁启超刘爽张朝立牡丹江医学院黑龙江牡丹江157011 牡丹江心血管病医院黑龙江牡丹江157011

研究核桃楸皮提取物(EMBJM)对人肝癌细胞SMMC-7721的增殖抑制作用及对细胞周期的影响。体外培养SMMC-7721细胞,并用不同浓度核桃楸皮甲醇提取物处理。通过MTT法研究EMBJM对SMMC-7721细胞增殖活性的影响;采用流式细胞仪分析EMBJM对SMMC-7... 详细信息

研究核桃楸皮提取物(EMBJM)对人肝癌细胞SMMC-7721的增殖抑制作用及对细胞周期的影响。体外培养SMMC-7721细胞,并用不同浓度核桃楸皮甲醇提取物处理。通过MTT法研究EMBJM对SMMC-7721细胞增殖活性的影响;采用流式细胞仪分析EMBJM对SMMC-7721细胞周期的影响。EMBJM可以显著抑制SMMC-7721细胞生长,具有时间和计量依赖性。细胞周期实验表明EMBJM将SMMC-7721细胞阻滞在G2/M和S期,并具有剂量依赖性。EMBJM质量浓度为8和16mg/L时,G2/M期细胞所占百分比分别为13.89%±2.46%和14.35%±2.68%,与空白对照组(8.34%±1.42%)比较,差异均有统计学意义(P<0.05);同等浓度范围内S期细胞所占百分比分别为39.87%±2.83%和44.81%±2.93%,与空白对照组(26.80%±1.76%)比较,差异均有统计学意义(P<0.05)。桃楸皮甲醇提取物可以影响SMMC-7721细胞周期分布和有效抑制SMMC-7721细胞生长。

关键词：核桃楸皮细胞毒性细胞周期 SMMC-7721细胞

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基于Petri网的保密性策略建模与验证

华中科技大学学报（自然科学版） 2007年第10期35卷 28-31页

作者：张昭理洪帆廖俊国华中科技大学计算机科学与技术学院湖北武汉430074

为了对实施了具体保密性策略的系统、进程或工作流的保密性进行严格有效的分析与验证,提出了一种基于Petri网的保密性策略建模与验证方法.首先给出保密性策略基于Petri网的形式化描述,为系统建立Petri网模型;然后在此模型下利用保密性... 详细信息

为了对实施了具体保密性策略的系统、进程或工作流的保密性进行严格有效的分析与验证,提出了一种基于Petri网的保密性策略建模与验证方法.首先给出保密性策略基于Petri网的形式化描述,为系统建立Petri网模型;然后在此模型下利用保密性策略基于Petri网的形式化描述以及覆盖图对系统的保密性进行分析与验证,以判断系统是否符合保密性策略的要求.由于给定的系统Petri网模型覆盖图可以自动生成,因此可以利用其对系统的保密性进行自动分析与验证.通过一个进程实例阐述了该方法的原理和实施过程.

关键词：保密性策略 Petri网模型验证

无损检测中基于模糊逻辑的多传感器数据融合(英文)

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控制理论与应用 1999年第6期16卷 924-927页

作者：张兆礼王祁孙圣和哈尔滨工业大学自动化测试与控制系哈尔滨150001

模糊逻辑在多传感器数据融合中得到广泛的应用，但是基于模糊逻辑的多传感器数据融合在无损检测中的应用还是一个崭新的课题．本文给出了一种新的用于无损检测数据融合的模糊逻辑结构，并且给出了隶属度函数以及运算符的定义方法．

关键词：多传感器数据融合模糊逻辑无损检测

敦煌美术技艺传承的知识积累——以“反弹琵琶”画塑为例

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美术研究 2023年第6期 45-51页

作者：马德张兆莉敦煌研究院兰州大学历史文化学院 730000

民族地区的大量民间反弹乐器表演的场景,表明了敦煌壁画中反弹琵琶的合理性。然而大量以此图像为基础创作的艺术作品,未能真正体悟和考虑壁画的整体性和乐理知识的常识性,导致出现琵琶的正、反朝向问题,未能真正传承敦煌美术技艺的精髓... 详细信息

民族地区的大量民间反弹乐器表演的场景,表明了敦煌壁画中反弹琵琶的合理性。然而大量以此图像为基础创作的艺术作品,未能真正体悟和考虑壁画的整体性和乐理知识的常识性,导致出现琵琶的正、反朝向问题,未能真正传承敦煌美术技艺的精髓。因此,从事反弹琵琶壁画的艺术再创作,不仅要遵循基本常识,还需要纠正前人作品中的不合理之处,让作品更加有生命力。

关键词：敦煌壁画反弹琵琶技艺传承知识积累