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The evolution of object-oriented databases (OODBs) has not been accompanied by an equivalent evolution of theoretical models, leaving the foundations for OODBs ill-defined. Design of OODBs has been hampered by the lack of design techniques/tools which correspond to the theoretical model. This paper defines a core conceptual object oriented database (COODB) model providing a foundation and frame...

A novel automated spectral measurement system is presented. Special attention has been focused on the design in order to obtain rapid measurement facilities, minimize hardware and simplify serial communications between the different subsystems involved, resulting in a low-cost measurement system. It is controlled by an HP-9000 computer, through a fully menu-driven interface, and the primary mea...

This paper deals with the detailed VLSI implementation of a fast bit-serial operator designed to perform very high precision (600 decimal digits) additions, multiplications and divisions, and some of the applications of the circuit.

This paper studies a low-cost computerbased 3D laser radar collection system. First, the control of actuator is realized by serial communication and the 2D image is captured from lines to surface, then denoise processing calibration is carried out by using Open CV. By using Irrlicht3D engine, the point cloud data is to be rendered to convert the 2D images to the 3D effect. Robot’s collection on...

We analyze parallel-to-serial transmitters and serial-to-parallel receivers that use ultrashort optical pulses to increase the bandwidth of a fiber-optic communication link. This method relies on real-time holographic material for conversion of information between spatial and temporal frequencies. The analysis reveals that the temporal output of the pulses will consist of chirped pulses, which ...

Virtual machines provide a promising platform for computational Grids. By their very nature -virtualization of underlying hardware -they enable instantiation of a new, independently configured guest environment on a host resource. In addition, they offer the benefits of isolation and fine-grain enforcement and, given the ability to serialize their state and migrate, offer increased flexibility ...

Fast algorithms for high-speed divider design in finite fields GF(2) are very crucial in applications like cryptosystems. In this paper, we reformulated the conventional iterative division algorithm by changing the pre-defined variable and then updating its initial value accordingly. The reformulated division algorithm allows a restructuring of the divider architecture to further improve its op...

According to statistic data of China in recent years, gas explosion accounted for above 70% in all coal mine accidents. Frequent gas explosion accidents have caused great losses of lives and property. Therefore gas detection and monitoring system is needed to serve as a safety device in coal production. In this paper, an intelligent gas detecting system is designed. This detection instrument ad...

This paper elucidates the experience and thinking behind our new web-based environment for asynchronous group deliberation: Deme (pronounced "deem"). Deme grew out of participation in and observations of group decision making and community democracy, and is being developed within a university-community partnership to enhance civic participation and to bridge digital divides. Civic decisions in ...