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1.
Internet key exchange (IKE) is an automated key exchange mechanism that is used to facilitate the transfer of IPSec security associations (SAs). Public key infrastructure (PKI) is considered as a key element for providing security to new distributed communication networks and services. In this paper, we concentrate on the properties of the protocol of Phase 1 IKE. After investigating IKE protocol and PKI technology, we combine IKE protocol and PKI and present an implementation scheme of the IKE based on PKI. Then, we give a logic analysis of the proposed protocol with the BAN-logic and discuss the security of the protocol. The result indicates that the protocol is correct and satisfies the security requirements of Internet key exchange. 相似文献
2.
Chu Chao-Hsien 《东南大学学报》2008,(Z1)
To address security and privacy issues in radio frequency identification (RFID) traceability networks, a multi-layer privacy and security framework is proposed, which includes four facets: a security model, a communication protocol, access permission and privacy preservation. According to the security requirements that are needed in an RFID system, a security model that incorporates security requirements that include privacy of tag data, privacy of ownership, and availability of tag identity is introduced. Using this model, a secure communication protocol that can be used for anti-counterfeiting, automatic identification and privacy preservation is then developed. In order to manage the number of parties, data records of items, and complicated transitions of access permissions in an item-level traceability context, a well-designed access control protocol is proposed to parties that can prove the physical possession of an item;meanwhile, to address the privacy issues during data sharing in an RFID network, a vision of database systems that take responsibility for the privacy of the data they manage is also presented. 相似文献
3.
The subject of this work is the assessment on the stability of an excavated high slope in order to insure the security of the building site adjacent to the slope,which is frequently encountered in town construction in mountainous areas due to terrain limit.On the base of some typical engineering cases in Chongqing,several crucial problems on security assessment of building site adjacent to an excavated high slope,including the natural geological conditions and man-destroyed degree,engineering environment,potential failure pattern of the high slope,calculation parameters and analysis methods,are roundly discussed.It is demonstrated that the conclusion of security assessment can be determined according to the aspects above-mentioned,and the security assessment is one of the fundamental data to insure the safety of the related construction,site and buildings. 相似文献
4.
The ongoing Ukraine crisis is believed to be the most significant geopolitical incident after the fall of Berlin Wall.It deeply influences,among others,the future development of NATO （North Atlantic Treaty Organization）,which is the world＆#39;s largest military alliance and western countries＆#39;ace in the hole in case of security emergency.The crisis enhances the status and influence of NATO on the international arena,as well as impacts NATO＆#39;s transition process since the end of Cold War.The old question of Where will NATO go again becomes a hot topic. 相似文献
5.
International factoring is an alternative method of international settlement and financing provided by factors to exporters or importers. In terms of its particular advantages, international factoring is now widely used in effectively improving cash flow, avoiding bad debts, reducing operation expenses and increasing financing capital. This article starts with the background of international factoring, then goes deep into the meaning and relative merits of it. Finally, it is attempting to stress the significant use of international factoring again. 相似文献
6.
Chinese President Jiang Zemin said on Friday that China and the United States, two influential countries in the world, have common responsibilities and interests in safeguarding peace and security (安全) in the Asia-Pacific region and the world, promoting(促进) regional and global economic development and prosperity(繁荣), and combating terrorism(恐怖主义)together with the international community.China values its relations with the United States and is willing to work 相似文献
7.
JENG Fuh-gwo WANG Chung-ming 《浙江大学学报(A卷英文版)》2006,7(3):296-301
INTRODUCTIONThe access control problem in an arbitrary par-tially ordered user hierarchy is defined below. In an organization, the users and their authorized data are organized into a group of disjoint sets of security classes, and each user is assigned to a certain security class called his security clearance. Let C1, C2, …, Cn, n∈ù, be n disjoint security classes and ‘≤’ be a binary partial-order relation over the set C={C1, C2, …, Cn}. For the set (C, ≤), Cj≤Ci (i, j∈ù) … 相似文献
8.
INTRODUCTION Automatic face recognition has become a very active research area in the last decade due to the new interest in, and need for, surveillance and security, telecommunication and digital libraries, hu-man-computer intelligent interaction, and smart en-vironments. The small sample size (SSS) problem is often encountered because the number of the samples is much smaller than the dimension of the sample space in face recognition. It results in the singularity of the within-class … 相似文献
9.
William Faulkner is one of the most imaginative and intelligent American novelists who enjoys a growing international reputation. His novel The Sound and the Fury is one of his most famous novels that have achieved great success throughout the world. This paper is organized to analyze the bitterness and tears of Compson family through the relation between the mother and daughter in The Sound and the Fury. 相似文献
10.
With the global development and integration of economy,Business English has become one of the most essential components in international business activities.However,as far as the traditional teaching approach of Business English Reading is concerned,there exist some limitations.How to improve the students’ reading comprehension and help them become proficient in English and business is a big task for the teachers.Therefore,Collaborative Strategic Reading(CSR) is applied in the class and it proves efficient and applicable. 相似文献
11.
Different countries have different cultures.Currently,the world is developing quickly in the age of economic globalization.Business contacts among nations get increasingly close,which has brought more and more opportunities to deal with businesses.Actually,international business negotiation is the most important part of international business,meanwhile,cultural differences have many influence on international business negotiation,such as languages,manners,time,thinking,value and attitudes and so on.Analyzing their differences is a good way to find out some effective ways to avoid or mitigate the adverse impacts the cross-cultural elements might produce on international business negotiation. 相似文献
12.
正Aim Journal of Zhejiang University-SCIENCE B(Biomedicine Biotechnology)(JZUS-B) is edited by the international board of distinguished Chinese and foreign scientists, and is aimed to present the latest developments and achievements in scientific research in China and overseas to the world's scientific circles, especially to stimulate and promote academic exchange between Chinese and foreign scientists everywhere. 相似文献
13.
正Aim Journal of Zhejiang University-SCIENCE B(Biomedicine Biotechnology)(JZUS-B) is edited by the international board of distinguished Chinese and foreign scientists, and is aimed to present the latest developments and achievements in scientific research in China and overseas to the world's scientific circles, especially to stimulate and promote academic exchange between Chinese and foreign scientists everywhere. 相似文献
14.
正Aim Journal of Zhejiang University-SCIENCE B(Biomedicine Biotechnology)(JZUS-B) is edited by the international board of distinguished Chinese and foreign scientists, and is aimed to present the latest developments and achievements in scientific research in China and overseas to the world's scientific circles, especially to stimulate and promote academic exchange between Chinese and foreign scientists everywhere. 相似文献
15.
《浙江大学学报(A卷英文版)》2021,(2)
正Aim Journal of Zhejiang University-SCIEIVCE A (Applied PhysicsEngineering)(JZUS-A) is edited by the international board of distinguished Chinese and foreign scientists,and is aimed to present the latest developments and achievements in scientific research in China and overseas to the world's scientific circles,especially to stimulate and promote academic exchange between Chinese and foreign scientists everywhere. 相似文献
16.
《高等教育与学术研究》2007,(4)
With the development and transportation and telecommunication,the world becomes smaller and smaller,but there still exist culture differences in the world.Different cultural backgrounds lead to distinct needs and wants(what people buy,when they buy,why they buy and how many they buy,etc).Meanwhile,cultures have great influence on business activities.International marketing,a typical business activity,is not only concerned about economy,but also related to cultures.Therefore,if a market-oriented company wants to meet the needs of foreign customers and survive the fierce competition in international market,it is wise for their stuff to understand different cultures.This is the key for any company to make successful strategies in the light of real cultural situation.That is to say,culture is one of the most important factors in international marketing,unaware of which,corporate may loss out.In my thesis,I'll probe into the importance of understanding different cultures. 相似文献
17.
Shopping online has become a fashionable and convenient pattern of consumption in China,and the percentage of Chinese cyber-shopping is on the growth.At the same time,many international chain supermarkets are also taking up enormous market share.Should they follow the trend of online shopping? This paper tries to analyze from three aspects that it is not the right time for those international chain supermarkets to alter their business conception of entity sales to electronic commerce and online business in China. 相似文献
18.
The supercontinuum （SC） generation at the repetition rate of 10 GHz is presented. The SC is generated in a 4.2 km conventional dispersion-shifted fiber （ DSF）, which is produced with nonlinear effects and group velocity dispersion. The DSF is pumped by an actively mode-locked Er^3＋ -doped fiber laser with pulse width of 7. 97 ps. A novel SC pulse source with a bandwidth up to 125 nm is obtained, which covers the whole C, L bands and part of S band. The stable, narrow pulses with mean pulse-width of 9.7 ps and time-bandwidth product of 0. 48 are filtered out across the whole SC bandwidth. This supercontinuum pulse source is suitable for future high-speed optical communications. 相似文献
19.
《海外英语》2006,(3):27
It is International Education Week in the United States,a time to think about and celebrate international education and exchange.The special week is a project of the State Department and the Department of Education. Officials of these agencies say Americans need to leam more about the world outside 相似文献
20.
<正>A new international organization consisting of partners from 15 countries and 44 aquariums, is challenging the diminishing shark statistics. According to National Geographic, Re Shark’s goal is to release 500 endangered zebra sharks in Indonesian waters to revive a self-sustaining wild population that is on the brink of extinction. 相似文献