The design process of Web assignment system based on windows environment is introduced in this paper. It solves not only the problem of system overall design and the database management ,but the making program by using C++Builder 6.0 software. The contents of the course can be studied in the partial net.
This system is a kind of online homework system based on Web database, it adopts B/S schema on its system structure ,and it made the traditional homework can be done online by using ASP and other correlative development technology.
This paper presents a method based on Nios II soft-core processor embedded in Altera's Cyclone FPGA (Field Programmable Gate Array) and MicroC/OS-II RTOS (Real-Time Operation System).
At the same time, it also gives the basic hardware framework of implementing interconnection, the type of main components, and the real-time operation system supporting the embedded TCP/IP protocols and Web server.
The telecommunication interconnection among the over 350 heterogeneous machines and the heterogeneous operation system had been realized.
Role-based access control (RBAC) is an access control method that has been widely used in Internet, Operation System and Relation Data Base these 10 years.
According to this architecture, a new security module TCB (Trusted Computing Base) is added to the operation system kernel and two operation interface modes are provided for the sake of self-protection.
For each of these connectives we give a type assignment system, a realizability semantics, and a completeness theorem.
This form of completeness implies the semantic completeness of the type assignment system.
Subtyping in first order object calculi is studied with respect to the logical semantics obtained by identifying terms that satisfy the same set of predicates, as formalised through an assignment system.
We study the extension of these results to the Damas-Milner polymorphic type assignment system under both the call-by-value and call-by-name interpretations.
Nevertheless, the data rate of traffic classes in such single code assignment system should be powers of two of the basic rate, which is impractical and wastes the system capacity when the required rate is not powers of two of the basic rate.
Motivation, as reflected by the amount of self-regulated performance engaged in, was studied by offering students the opportunity to earn a grade bonus by writing test items as part of a Voluntary Homework System (VHS).
Incorporating the OWL on-line homework system in the teaching of organic chemistry at VCU.