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Piecewise affine(PWA) system can be used to model non-linear and non-smooth processes accurately and describe characteristics of hybrid system excellently. Explicit model predictive control is a control method which enables one to obtain an explicit control law for a range of interested operating conditions. In this paper, explicit model predictive control based on PWA model is investigated in depth...
Background The recent advance in nanomaterial research field prompts the development of diagnostics of infectious diseases greatly. Many nanomaterials have been developed and applied to molecular diagnostics in labs. At present, the diagnostic test of human papillomavirus (HPV) relies exclusively on molecular test. Hereon, we report a rapid and facile quantum dots (QDs) and superparamagnetic nanoparticle-based...
The steady advance and healthful development of new countryside construction must depend on the scientific planning. The planning must be based on the correct, complete and good-currency status maps. Aiming to the urgent needs in practice, four approaches to producing status base maps, including integrated approach, generalized approach, updated approach and real-surveyed approach, are comparatively...
Due to the asynchronous generator has many negative factors such as large power fluctuation, poor transient performance, low energy efficiency, etc. The doubly fed induction generator(DFIG) is becoming a popular concept and thus the modeling of DFIG becomes an interesting research topic. This paper develops the DFIG model of power flow and third-order transient in which the power converter is simulated...
With the development of the electricity market and the attention paid to energy problem, the mode by which power grid combines with distributed generation is in good graces. In this paper the performance after the connection of fuel cell generation system with traditional substation is simulated and analyzed. On the basis of power generation principle of fuel cell and its detailed mathematical model,...
A Chaotic Optimization Algorithm (COA) is applied to integrated AC/DC hybrid power system in which the multi-infeed DC power transmission system is included, and the research on coordination controls among the HVDC modulations has been investigated in this paper. Chaotic Optimization Algorithms, which have the features of easy implementation, short execution time and robust mechanisms of escaping...
In order to fully utilize the existing geospatial data resource, reduce the building costs and complexities of GIS project, two kinds of spatial data materialized and virtual integration approaches are contrastively analyzed. The conflicts between spatial databases and the corresponding harmonizing technologies are discussed and explained. As viewed from the current application and research status,...
Aiming to the limitations of the existing GIS software, such as the lack of the corresponding function modules, no supports of the bulk processing, the requirements of many man-machine interactions, the inability to automatically and efficiently implement the updates propagation, a special tool for updates propagation is designed and realized based the component technology of ArcEngine. This tool...
Diabetic Retinopathy (DR) is one of the most common complications of diabetes and a major cause of blindness worldwide. We studied the transcriptome of the diabetic retina using Series Analysis of Gene Expression (SAGE) technology and observed a 45.6% reduction in transcript levels of glutamine synthetase (GS) in streptozotocin-induced diabetic rats compared with normal rats. RT-PCR and colorimetric...
A 500 kW C-band klystron with broad bandwidth has been developed. The klystron is successfully built and met design specification and applied for microwave amplifier.
Okun's law postulates an inverse relationship between movement of the real gross domestic product (GDP) and movement of the unemployment. In the light of modern theoretical studies, this paper note investigates the relationship between GDP and unemployment in China through the implementation of Okun's law over the period 1978-2006. The empirical research results reveal that Okun's law can not be confirmed...
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