网络安全与防火墙技术

防火墙是网络安全的关键技术 ,其核心思想是在不安全的网络环境中构造一个相对安全的子网环境。本文讨论了实现防火墙的主要技术手段 ,重点阐述了现行防火墙的功能、类型、安全措施以及防火墙技术的发展     

The web proxy location problem in general tree of rings networks

The Web proxy location problem in general networks is an NP-hard problem. In this paper, we study the problem in networks showing a general tree of rings topology. We improve the results of the tree case in literature and get an exact algorithm with time complexity O(nhk), where n is the number of nodes in the tree, h is the height of the tree (the server is in the root of the tree), and k is the number of web proxies to be placed in the net. For the case of networks with a general tree of rings topology we present an exact algorithm with O(kn ²) time complexity.This research has been supported by NSF of China (No. 10371028) and the Educational Department grant of Zhejiang Province (No. 20030622).     

基于C／S和B／S混合模式的多媒体电子阅览室管理系统设计

高职院校多媒体电子阅览室是用户获取信息和学习的重要场所,如何能进一步完善和发展它需要有效的管理系统和具有更高素质的管理队伍。从网络化、一体化、多元化的理念出发,采用三层C/S和B/S两种混合模式,在用户管理,资源管理,安全管理三个方面展开论述,为现代多媒体电子阅览室提出了方便实用、安全有效的管理系统设计方案,以供大家探讨。     

Proxy communication in crisis response

This study analyzes the role of third party crisis communication during the expansive food contamination crisis caused by Peanut Corporation of America (PCA). The information void caused by PCA's mismanagement of the crisis and subsequent reticence was filled by third party organizations serving as proxy crisis communicators. The need for organizations to plan for and engage in proxy communication when organizations in affiliated industries fail to communicate effectively during crises is demonstrated.     

沙特与伊朗在地区博弈中的代理人战略

近年来,沙特与伊朗在中东地区经常利用代理人战略开展竞争和博弈,具体表现为支持内战国家的代理人来改变战争进程与结果、扶植代理人进行权力竞争、利用代理人进行外交角力等。沙伊之间运用代理人进行博弈,既是两国的地缘政治对抗、教派纷争等结构性矛盾使然,也是由于代理方本身需借助外部力量实现政治与宗教目的。不过,受直接冲突与战争高成本及外部环境的约束,两国之间的博弈不会走向正面军事冲突。截至目前,沙伊的代理人战略加剧了中东政治生态的恶化,加快了地区阵营化、冷战化格局的演进,加深了中东国家政治的对抗性烈度。可以预见,施动方、代理方以及域内外大国关系的演绎将会对沙伊的代理人战略走向产生重大影响。     

Munchausen Syndrome by Proxy: Some Practice Implications for Social Workers

The medical and psychosocial complexities involved in cases of Munchausen Syndrome by Proxy typically necessitate carefully organized interdisciplinary responses. The role of social work in the effectiveness of such responses is both crucial and historically under-considered in the existing literature. This article presents the historical and specific diagnostic components of this complex and perplexing condition, along with practice guidelines for clinical responses, with information relevant to child protection issues across multiple settings.     

唐人刚勇意志力表现与豪侠时代精神

唐人乐于谈论前代豪勇之士如何忍痛带伤立功,充满了对这类豪勇之士的钦敬仰慕。唐人自己的忍痛事迹,也常流播于当时人们的谈论中,不少故事异文很多,一再被复述和转录。自伤忍痛往往还为某一具体目的进行,当事人侠烈气概的外现,具有一种让人钦敬的自我牺牲精神。唐代后期,作为一种固化的民俗,自伤还往往被恶人无赖用来炫示勇力,成为团伙內部考验个体成员忠诚与否的标志。     

股东大会委托表决制度的几点思考

本文就股东大会委托表决制度价值、信息披露、股东提案、代理人资格、可征求股数和委托书收购等有关方面进行讨论,主张我国应尽快建立一个公正、公开、私法自治的股东大会委托表决制度.     

Proxy reporting in education surveys: factors influencing accurate reporting in the 2012 Qatar Education Study

Abstract

Proxy reporting is a common practice during survey data collection to increase response rates while reducing fieldwork costs, and agreement between proxies and self-reports is critical to make reliable and valid inferences. This study is the first to unpack what influences proxy accuracy in a non-Western setting using data from the 2012 Qatar Education Study. We find that agreement is a function of a student’s grade in school, grades, a parent’s level of education, and the interaction between immigration status and parent education. These findings suggest in multicultural contexts, agreement may vary based on factors beyond what is typically accounted when examining the components of reporting error as a result of using proxies over self-reports.     

伊朗介入中东地区事务的动力及限度

近年来,伴随中东变局的演化以及伊朗与域内外国家间关系的复杂变化,代理人战争成为伊朗地区战略的重要政策工具。为应对不同对手,伊朗在海湾地区、阿拉伯半岛南部和地中海东岸地区分别扶持不同的代理人,并形成了三个次级战略板块。伊朗推行代理人战争的动力主要包括通过代理人战争制衡与掣肘美国、以色列、沙特等全球及地区对手;巩固与扩大本国在中东地区的战略影响力;避免与对手直接开战,实现以最低成本获取最大化收益的战略目标。然而,受代理人能力与战略意愿的改变、国内政局以及民众支持度变化、对手反制和新冠疫情等因素的影响,伊朗推行代理人战争存在明显限度,代理人战争的效果不应被过度夸大。