The Privilege of the Medieval Universitiesfrom the Perspective of Game Theory

在欧洲中世纪大学诞生时,身处教会、王室以及市政当局三足鼎立的紧张局面.为了争取生存的空间和发展机会,其与三者展开了艰苦的博弈过程D 博弈中的中世纪大学能够利用三者之间的矛盾巧妙周旋,从中获得了居住权、罢课权、迁徙权、免税免役权以及独立颁发教学许可证等特权,诸多的特权为大学的未来发展壮大奠定了坚实的基础,至今仍产生深远影响.

Least Privileges and Role’s Inheritance of RBAC

The main advantages of role-based access control （RBAC） are able to support the well-known security principles and roles＇inheritance. But for there remains a lack of specific definition and the necessary formalization for RBAC, it is hard to realize RBAC in practical work. Our contribution here is to formalize the main relations of RBAC and take first step to propose concepts of action closure and deta closure of a role, based on which we got the specification and algorithm for the least privileges of a role. We propose that roles＇ inheritance should consist of inheritance of actions and inheritance of data, and then we got the inheritance of privileges among roles, which can also be supported by existing exploit tools.

Privilege Flow Oriented Intrusion Detection Based on Hidden Semi-MarkovModel

A privilege flow oriented intrusion detection method based on HSMM (Hidden semi-Markov Model) is discussed. The privilege flow model and HSMM are incorporated in the implementation of an anomaly detection IDS (Intrusion Detection System). Using the dataset of DARPA 1998, our experiment results reveal good detection performance and acceptable computation cost.

Effect of Vasocation Intestinal Peptide on Immune Privilege of the Rat Testis

Objective To study the effect of vasocation intestinal peptide （VIP） on immune privilege of the rat testis. Methods The UU infected SD rats and Leydig cells were intervened by VIP, the secretion of TGF-β and the expression of FasL in rat Leydig cells were compared between VIP-intervened group and control group to test the effect of VIP on immune privilege of the rat testis in vitro and in vivo. Results In vitro, the secretion of TGF-β in Leydig cells could be increased by low dosage of VIP while inhibitited by high dosage of VIP; expression of FasL mRNA in Leydig cells could be decreased by VIP In vivo, increased expression of TGF-β mRNA and decreased FasL mRNA were observed in VIP group in 2-3 weeks after infected by UU. In addition, the apoptosis of Jurkat cells mediated by Leydig cells could be prevented by VIP Conclusion When Leydig cells or testis infected by UU, VIP could regulate the immune function of rat Leydig cells and participate in the regulation of immune privilege of testis through the regulation of TGF-β secretion and FasL expression pattern of Leydig cells.

Fas ligand expression in colon cancer:A possible mechanism of tumor immune privilege

AIM: To detect the expression of Fas ligand (FasL) in colon cancer tissues and cell lines and analyze the function of FasL-expressing colon cancer cells in inducing Fas-sensitive T lymphocyte apoptosis. METHODS: Ninety surgically resected colon cancer tissues and 15 hepatic metastasis specimens were investigatedby immunohistochemical method with normal colon mucosa and colon adenoma as control. The relationship between FasL expression and pathologic features was also analyzed.FasL expression of 4 colon cancer cell lines, SW620, Lovo, LS-174T and SW1116, were detected by Western blotting assay. The function of FasL expressed on colon cancer cells was determined by coculture assay with Jurkat T lymphocytes, the apoptotic rate of which was detectedby flow cytometry assay.RESULTS: Fifty-six (62.22%) cases of all the 90 colon cancer tissues and all (100%) the liver metastasis specimens expressed FasL, significantly higher than normal colon mucosa and colonic adenoma. Higher expression of FasL was found in more advanced stage of colon cancer and in cancer tissues with lymphatic or hepatic metastasis.All the colon cancer cell lines were found to express FasL.After coculture with the SW1116 cells for 24 h with an effector: target ratio 10:1, the rate of apoptosis of Jurkat cells rose from 1.9% to 21.0%.CONCLUSION: The expression of FasL is upregulated in colon cancer and the functionally expressed FasL can induce apoptosis of Fas-expressing T lymphocytes.

A Cache Considering Role-Based Access Control and Trust in Privilege Management Infrastructure

PMI （privilege management infrastructure） is used to perform access control to resource in an E-commerce or E-government system. With the ever-increasing need for secure transaction, the need for systems that offer a wide variety of QoS （quality-of-service） features is also growing. In order to improve the QoS of PMI system, a cache based on RBAC （Role-based Access control） and trust is proposed. Our system is realized based on Web service. How to design the cache based on RBAC and trust in the access control model is deseribed in detail. The algorithm to query role permission in cache and to add records in cache is dealt with. The policy to update cache is introduced also.

Use and Abuse of Privileged Information in Italian Listed Companies

Privileged information has significant importance to listed companies, given both the extent of the markets in which it is used and the relevant effects that it can produce on the prices of financial instruments. The term “privileged information” means information that has not yet been made known to the public, which, if disclosed, is able to affect significantly the prices of the securities of listed issuers. This article aims to prove that in many cases, the effects of privileged information can be adequately represented in financial statements, despite their “confidential” nature. For this purpose, this research proposes the existence of a relationship—which can be virtuous or vicious—between financial statements and privileged information. In order to demonstate this thesis, the author carried out an empirical survey concerning both the economic and the legal sector. For the first one, the research considered the price-sensitive information published by companies listed on the Italian Stock Exchange during the first half of 2018, and the result shows that a lot of privileged information is able to generate accounting effects;for the second one, the empirical survey analyzed some significant judgments passed by the Italian Court of Cassation in the 2000s which confirm the companies’ violation of the duty to present privileged information in financial statements.

Farmers' Privilege under the Protection of New Plant Varieties

This paper studies farmers'privilege under the protection of new plant varieties,and points out that farmers'privilege is given to balance interests of plant breeders and relevant public.Based on this,it analyzes shortcomings of farmers'privilege regulations,and puts forward that it is required to improve farmers'privilege regulations in subjects,objects and contents of rights on the basis of learning from advanced legislation experience of foreign countries,and build the interest sharing mechanism between breeders and farmers.

Identity Governance Framework for Privileged Users

Information technology companies have grown in size and recognized the need to protect their valuable assets.As a result,each IT application has its authentication mechanism,and an employee needs a username and password.As the number of applications increased,as a result,it became increasingly complex to manage all identities like the number of usernames and passwords of an employee.All identities had to be retrieved by users.Both the identities and the access rights associated with those identities had to be protected by an administrator.Management couldn’t even capture such access rights because they couldn’t verify things like privacy and security.Identity management can help solve this problem.The concept behind identity management is to centralize identity management and manage access identity centrally rather than multiple applications with their authentication and authorization mechanisms.In this research work,we develop governance and an identity management framework for information and technology infrastructures with privileged access management,consisting of cybersecurity policies and strategies.The results show the efficiency of the framework compared to the existing information security components.The integrated identity and access management and privileged access management enable organizations to respond to incidents and facilitate compliance.It can automate use cases that manage privileged accounts in the real world.

Chinese-Language Software-A Privilege for Chinese

Since China has had more than 10 years of experience in the tech-nology for Chinese-language com-puter systems,one American firm,Microsoft,has started cooperation with Chinese software manufachur-ers to develop a Chinese edition of Windows 4.0.Microsoft will also support the Legend Group in devel-oping the Chinese edition of DOS 6.0,a new system that will hopeful-ly be on computer store shelves be-fore very long.

Genius Is Not a Privilege of the Few

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“调解不成无损于现状”机制的功能与法理基础

为促进诚信调解,“调解不成无损于现状”机制要求如果调解不成,当事人不得单方公开调解交流以改变调解前原有的权利状态。“调解不成无损于现状”机制的功能,在于促进调解程序的顺利进行、维持调解员的中立地位、保证调解程序和后续争议解决程序的独立性和完整性,但如何保证其实施,则存在多种选择路径。若借助于保密合同,则合同之外的主体难受约束;若借助于排除规则,则与仲裁规则的合同性质相悖;若借助于无损于现状特免权,特免权之外的自然人和法人都将成为特免权的义务主体。因此,以无损于现状特免权为基础,根据调解交流是否与促成调解这一目标有关,可以在提供主体、产生时间和信息类型三个方面有效构建调解交流的保护机制。

近代日本对鸦片问题的认识及对中国台湾鸦片殖民特权的构建

继以英国为首的西方殖民列强向中国倾销鸦片,并以坚船利炮促使国门洞开进而催生鸦片问题后,作为后发的帝国主义国家,日本对鸦片战争的经验教训及鸦片本身的认识不断发生变化,一方面为免遭鸦片毒害,通过颁布禁止鸦片进口的法令规避鸦片威胁,另一方面又难掩对鸦片利润的贪婪及对扩大资本市场的追逐。日本对鸦片问题这种由“危机”到“获利”的认识转变,促使其于甲午战争后在中国台湾建立鸦片殖民特权,不仅通过聚敛大量财富巩固其殖民统治,而且成为其进一步扩大对中国鸦片侵略的恶例。

RISC-V特权架构配置的硬件实现影响研究

RISC-V指令集的模块化设计,能够适用于从低功耗设备到高性能处理器等多个领域.RISC-V特权架构涵盖了系统中除非特权指令集以外的所有内容,包括特权指令以及运行操作系统和连接外部设备所需的附加功能.基于特权架构,分为32位和64位两类,涵盖特权等级、异常处理、物理内存保护、基于页面的虚拟内存和性能计数器等模块的32种配置,探索特权架构配置在不同应用场景下对功能和硬件资源开销的影响.在实现方式上,采用参数化配置来选择系统的特权架构.实验结果表明,根据配置的特权架构不同,在采用相同非特权体系结构的情况下,最多会有28.63%的面积和40.83%的功耗差异.

云计算中属性基数据与权限混合访问控制方案

云计算的出现使得从任何位置访问应用程序和数据成为可能,由于其灵活、高效和资源共享的特性,云计算迅速应用于各个行业和领域。云计算中的安全细粒度数据访问控制、隐私保护和权限控制已成为学术界和工业界研究的热点问题。为了解决这些问题,提出一种基于SM9属性加密的数据与权限混合访问控制方案,在需要加密大量具有层次结构的数据的场景下,该方案比传统的属性基加密方案更加灵活高效,匿名的特点可以限制用户隐私泄露,层次权限控制使得更细粒度地管理云数据的操作权限成为可能。安全分析和实验结果表明,该方案在判定性双线性Diffie-Hellman假设下是安全的,在加解密等方面具有良好的工作效率。

寒门子弟的高等教育经历研究——寒门幸运儿和双重贫困生的异质性视角

寒门子弟的高等教育经历表现话题长期存在二元对立的观点。本研究追溯高中教育经历,并分析其与高等教育环境间的连续性,丰富寒门背景对大学生综合表现的影响机制,以示范性普通高中机会获得将寒门子弟区分为寒门幸运儿和双重贫困生两类群体,同时与非寒门子弟在大学期间的学业成就、人际交往和毕业预期去向等高等教育经历方面进行全面比较。结果显示,寒门幸运儿和双重贫困生的学业成绩排名均显著优于非寒门大学生;寒门幸运儿有着不亚于非寒门大学生的人际交往表现,能尽快适应融入高校生活,而双重贫困生对人际交往更可能感到不适应,人际交往能力水平也更低;寒门幸运儿与非寒门大学生的毕业规划类似,即毕业后更可能继续深造,而双重贫困生则更可能直接就业。本研究的结论验证了寒门大学生内部的异质性,并肯定了通过家庭之外的文化资本补偿对寒门子弟突破家庭资本劣势的重要意义。

论艾兹奥尼对学校道德领导思想的贡献及启示

萨乔万尼学校道德领导思想的诞生,固然与其独特的学习和工作经历高度相关,但也深受其他一些思想家及其理论的影响,其中艾兹奥尼及其组织社会学理论的影响至关重要。艾兹奥尼对社会生活抱有共同体价值观和道德激励信念,他将社会学研究责任与社会公共事务相关联,其组织社会学理论对学校管理有重要价值。艾兹奥尼的观点是西方学校管理的理论基础之一,分析艾兹奥尼的顺从理论、共同体价值观、共同体结构等,对于深刻认识和理解萨乔万尼学校道德领导思想很有必要。基于艾兹奥尼理论中蕴涵的学校道德领导思想所提出的道德参与是教育领导的核心、学校是具有道德契约的“共同体”、把学校建设成为“生活世界的共同体”等理念和主张,不仅影响了萨乔万尼学校道德领导思想,而且对中国高校管理实践同样具有指导意义。