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Aimed at improving poor performance of current network routing service in the way of scalability, a new scalable routing service model (SRSM) is proposed based on the core of network interconnection and principles of modern packet switching. Three basic elements, which are addressing mode, routing table and routing algorithm, are abstracted to establish Meta model (SRSM) of routing service and realize...
Due to lack of desired model for traditional network architecture, services which are newly deployed can't be analyzed and verified quickly or efficiently. To address this problem, this paper puts forward a description method for network architectures which includes two parts: the modeling method and the formal model. First of all, we give a modeling method from the essence of the service interactions...
Although cloud computing helps learners to access online learning content through commonly used devices, it can be difficult to collaborate in the mobile environment. We develop a service-oriented system, 'Teamwork as a Service' (TaaS), to facilitate learners' team learning activities. The five main services of TaaS facilitate a teamwork-enhanced learning flow associated with the theory of Kolb's...
We describe a generalization of the group testing problem termed symmetric group testing. Unlike in classical binary group testing, the roles played by the input symbols zero and one are “symmetric” while the outputs are drawn from a ternary alphabet. Using an information-theoretic approach, we derive sufficient and necessary conditions for the number of tests required for noise-free and noisy reconstructions...
Logistics information system (LIS) is a modern technology which takes use of computer and information technology. This study discussed the application of GIS (geographic information system), RS (remote sensing) and GPS (global position system) technologies in modern LIS respectively based on the introduction of GIS, RS and GPS technologies, then discussed the integration of 3S technologies in the...
The integer ambiguity needs re-computation when cycle slips occur in the carrier phase signal during attitude determination using global positioning system (GPS). This paper presents a new method for fast integer ambiguity repair for land vehicle application. The velocity vector is utilized to obtain the baseline vector when cycle slips occur. And then observation equations are solved with the obtained...
Carbon nanotubes (CNTs) doped vanadium pentoxide (V2O5) porous aerogels are a good kind of material as the cathode material in lithium batteries due to their layered structure, high energy density, good reversibility, high capacity for lithium ion insertion. V2O5-CNTs nanocomposites were synthesized by a sol-gel method, using the solvent exchange and ambient pressure drying technique. Electrochemical...
Sub-wavelength gratings (SWGs) have been widely used in many fields since the structure has the function of antireflection and increase the light transmittance. Many researchers are fabricating SWGs on the glass substrate hoping that it can be used in solar cells, display or light emit diodes (LEDs). Nanoimprint is an emerging lithographic technology that promises high resolution, high throughput,...
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