Hongping Yang

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Magnetoresistance exhibited by non-magnetic semiconductors has attracted much attention. In particular, Wan et al. reported roomtemperature magnetoresistance in silicon to reach 10% at 0.07 T and 150,000% at 7 T—‘‘an intrinsically spatial effect’’. Their supply voltage was approximately 10V (ref. 12), which is low and approaches the industrial requirement.(More)
Ag-modified In2O3/ZnO bundles with micro/nano porous structures have been designed and synthesized with by hydrothermal method continuing with dehydration process. Each bundle consists of nanoparticles, where nanogaps of 10-30 nm are present between the nanoparticles, leading to a porous structure. This porous structure brings high surface area and fast gas(More)
Doppler radar reflectivity and radial velocity data are added directly each hour to the mesoscale model ARPS (The Advanced Regional Prediction System) in numerical simulation by its data processing system ADAS (ARPS Data Analysis System). By simulating the Typhoon Chanthu (1003) process, we analyzed the impact of improving the initial field and forecasting(More)
Taking the retailerpsilas default in supply chain for example, in this paper, using the theory of credit default swap, the writer intends to make a research on the shift of default risk in supply chain. On the condition of insured interest rate and recovery rate, a supposition is made that the default rate of supply chain depends on the doubly stochastic(More)
In a two-echelon supply chain system with one retailer and one manufacturer, the mathematical model of retailer's inventory level and operation cost by sharing the manufacturer 's supply capacity information on time is constructed when the market demand refers to AR(1) model. Based on the order-up-to S level policy, without sharing supplier's capacity(More)
In this paper, a calculation method of the fractal dimensions by wavelets transform coefficients is proposed to characterize topography surface fractal characteristics. Surface profile is simulated based on the Majumdar-Bhushan function. The calculation fractal dimensions are analyzed adapting Daubechies wavelet in different decomposition scales and order.(More)
This paper mainly compares with the implementation technology based on the WAP and J2ME solution. It especially emphasizes the differences among the application architect, the access ability of local saving space, the design of the interface, the technology of security, etc. And the author puts forward some suggestions. The author wishes that it could bring(More)
CAI plays a more and more important role in education by introducing the technology of artificial intelligence and knowledge of engineering. Pivotal technology and purpose for application of ICAI based on web are discussed in this paper. The methods of composition and realizing are also analyzed and a possible model of ICAI is set up.(More)
Food and feed contamination by aflatoxin (AF)B₁ has adverse economic and health consequences. AFB₁ degradation by microorganisms or microbial enzymes provides a promising preventive measure. To this end, the present study tested 43 bacterial isolates collected from maize, rice, and soil samples for AFB₁-reducing activity. The higher activity was detected in(More)