Journal of Internet and Information Systems

Networking and Information Systems Journal

Object relational and object database (distributed) systems are used more and more in real applications due to their rich and extensible data types and query language mixing declarative assertions and navigations. Queries may frequently involve multiple collection traversais (i.e., path expression), possibly distributed. Moreover, predicates with quantifiers can also be included inside path exp...

Internet Supportive Systems and Rehabilitation of Addicts Under Maintenance Treatment

International Journal of Cooperative Information Systems

We claim that a dynamic agent infrastructure can provide a shift from static distributed computing to dynamic distributed computing, and we have developed an infrastructure to realize such a shift. We shall compare this infrastructure with other distributed computing infrastructures such as CORBA and DCOM, and demonstrate its value in highly dynamic system integration, service provisioning and ...

investigation of single-user and multi-user detection methods in mc-cdma systems and comparison of their performances

در این پایان نامه به بررسی روش های آشکارسازی در سیستم های mc-cdma می پردازیم. با توجه به ماهیت آشکارسازی در این سیستم ها، تکنیک های آشکارسازی را می توان به دو دسته ی اصلی تقسیم نمود: آشکارسازی سیگنال ارسالی یک کاربر مطلوب بدون در نظر گرفتن اطلاعاتی در مورد سایر کاربران تداخل کننده که از آن ها به عنوان آشکارساز های تک کاربره یاد می شود و همچنین آشکارسازی سیگنال ارسالی همه ی کاربران فعال موجود در...

Internet-based information and retrieval systems

There is limited reliability of internet-based information systems. For example, Internet search engines provide results that have limited reliability and data available on the Internet is limited in its reliability. As a result, the purpose of this paper is to elicit sources of the lack of reliability, develop a model that can be used to study the impact of reliability and propose some solutio...