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Economic globalization and rapid development worldwide has brought about great differences among different socioeconomic classes. It seems that the lower socioeconomic classes need more attention in order to prevent all kind of diseases and to promote their health status. Using a mobile questionnaire survey, 584 unemployed persons, in Hainan and Hubei(More)
In order to efficiently optimize degree distribution of high-rate structured QC-LDPC (SQC-LDPC), based on analysis to the special structure of SQC-LDPC, this paper modifies previous degree distribution optimization method. At first, it proposes a new set of global optimization constraints for Differential Evolution (DE) algorithm. Furthermore, when Gaussian(More)
Power consumption and communication distance have become crucial challenges for SIM card RFID (radio frequency identification) applications. The combination of long distance 2.45 GHz radio frequency (RF) technology and low power 2 kHz near distance communication is a workable scheme. In this paper, an ultra-low frequency 2 kHz near field communication (NFC)(More)
While various demands from end market wind off quickly, with flexible essence in organization supply chain can match them, which is the destination of related companies and also the base of supply chain. The goal of this paper is to explore the capability of SC encountering various demands from end users. It sets the whole process into decision, execution(More)
while e-commerce is developing dramatically.it become promising and profitable for businessman.But it is significant to set up proper business model and information system based on internet, which ensure the distributed entities will running smoothly and efficiently as in the same organization.This essay explored the mode and characteristics of e-commerce(More)
In order to improve error performance of data storage, this paper presents a code-design algorithm for a class of structured quasi-cyclic low-density parity-check (SQC-LDPC) codes with high rate ( R >= 0.9 ) and long-length (104 < n). In the design of parity-check matrix, optimized degree distribution pairs are obtained based on the(More)
An output-capacitorless low-dropout regulator (OCL-LDO), which is based on flipped-voltage-follower (FVF) using damping-factor-control (DFC) frequency compensation for SOC application, is presented in this paper. The proposed LDO with 1.2V supply, 100mA load current was designed by SMIC 0.13um standard CMOS process. Simulation results have shown that the(More)
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