SGX技术的分析和研究

安全性是云计算中一项极为重要的需求,然而如何保护云计算中关键应用程序和数据的安全、防止云平台管理员泄露用户隐私,仍然是目前没有解决的难题.2013年,Intel公司提出了新的处理器安全技术SGX,能够在计算平台上提供一个可信的隔离空间,保障用户关键代码和数据的机密性和完整性.作为系统安全领域的重大研究进展,SGX对系统安全,尤其是云计算安全保护方面具有非常重要的意义.该文介绍了SGX的原理和特性,分析了SGX的关键技术以及针对SGX的侧信道攻击及防御方法.同时,总结和归纳了该技术的研究成果,分析了SGX技术与其他可信计算技术的异同,并指出了SGX技术的未来研究挑战和应用需求.     

Gated communities as new forms of segregation in post-socialist Budapest

In the cities of East Central Europe high-status gated residential enclaves emerged after the collapse of communism symbolizing the new dimensions of social segregation brought about by the post-socialist transition. Due to the highly liberalised housing market and the infiltration of global capital the proliferation of gated neighbourhoods became possible. The aim of this paper is to analyse the role of gated communities in Hungary in general and in Budapest in particular. To find out the driving forces behind the gating phenomenon we apply the case study approach analysing the development of a typical gated neighbourhood in one of the suburban settlements of Budapest. During the research special emphasis has been placed on the attitude and behaviour of three types of stakeholders: the developers, local government and the homeowners. The Magdolna-völgy gated community reflects the contradictions that have characterised the transition of Hungary from single-party communist system to neo-liberal capitalism since 1990. The weak position of local municipalities as opposed to real estate developers can be related to the decentralised, deregulated public administration system and the laissez fair attitude of neo-liberal state. Gated neighbourhoods became symbols of polarisation and conflict within local societies. The case study demonstrates that the affluent section of society can efficiently segregate themselves from the rest of people, and can successfully privatise public spaces and create safe and privately controlled spaces behind the fences.     

蓝图中的飞地——南沙科学博物馆点评

在南沙经济开发区的整体建设中．由建筑师刘珩设计的南沙科学博物馆回应了基地的特定性并紧密地与本地艺术家合作,在准工业化经济的条件下，创建了一个内向性的场所。