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| Articles
by
Zhang Qi |
Total Records (
4 ) for
Zhang Qi |
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Ma Lei
,
Zhang Qi
,
Jia Qi-Nan
,
Zhang Jun
,
Yi Qing-Qing
and
He Jian-Feng
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Liver diseases such as Hepatitis B has seriously affected humans’ health. According to the previous reports, gene mutation occurs as an essential factor of sustained infection. Technically, the detection of single nucleotide polymorphism loci can help study risk of infection and degree of disease evaluation. However, regular single nucleotide polymorphism selection methods such as Single-strand conformation polymorphism and Denaturing gradient gel electrophoresis are restricted by time consuming, technical difficulty and high costing. In this study, a computing method based on optimal risk and preventive pattern algorithm is applied to analyze the genetic mutation from perspective of SNPs in Hepatitis B virus Deoxyribonucleic acid sequence which illustrates the characteristics of low costing and simplified operation process. Moreover the proposed method may uncover specific unknown single nucleotide polymorphism loci from Hepatitis B virus gene sequence data. The experiment releases 18 potential single nucleotide polymorphisms locus that demonstrate the transition from Acute to Chronic, where five of them have been reported in previous research, the remaining 13 are potential locus. In addition, 3 potential single nucleotide polymorphisms locus that demonstrated the transition to Cirrhosis are discovered. It may provide valuable reference for the clinic prevention and diagnostics. |
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Bo Li
,
Tengfei Ding
,
Xiling Wang
and
Zhang Qi
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Rock fragmentation process by drilling rig is accomplished
by the simultaneous effects of drill pipe rotation and axial downwards motions.
Hydraulic chuck transfers engine power to drill pipe during the drilling and
sampling process suchthatit’s one of the most important components of drilling
rig. Chuck available on the market, design is not considered clamping force
and drilling capacity matching, resulting in slipped drill, injury drill or
chuck destruction. This study designs a maximum clamping diameter 73 mm hydraulic
chuck, focuses on the interaction mechanism of the gripper slips and drill pipe.
A model to simulate and optimize the clamp mechanism and slips has been developed
by the finite element analysis method, conclude the structure of the optimal
size of the hydraulic chuck. This research may be a better suggestion on resolving
the problems of pipe damage and slipping down. The study method would also be
a reference for the design of other kinds of chucks. A model to simulate and
optimize rainwater-harvesting systems for irrigation has been developed. |
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Zhao Zhe
,
Xiang Yang
,
Zhang Bo
,
Zhang Qi
and
Pan Tao
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Microblog has been an important platform for expression of
public opinion towards policy decisions. One key challenge for policymakers
is to mine public opinions from microblog platforms as soon as possible. In
order to deal with the challenge, this paper proposes a Topic Detection and
Tracking (TDT) algorithm based on self-adjusting vector space model (VSM) and
an opinion mining method based on comments. Furthermore, an innovative opinion
mining system is developed, using mciroblog as the opinion mining platform and
combining natural language processing techniques with similarity calculation
and polarity calculation. A series of related experiments are employed to verify
the efficiency and maneuverability of the algorithm. |
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Zhang Qi
,
Zheng Hao
,
Zhang Jianping
and
Peng Hong
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The investment of centralized traffic information system
is large and data processing is too concentrate, the autonomous traffic information
system based on vehicle-to-vehicle communication is mostly limited to information
on safe driving, less involved with the research of the whole road network congestion
information collection and transmission. This study puts forward an autonomous
intelligent vehicle traffic information system mode which is for the whole urban
road network and can collect and transmit information by itself. And then, based
on the original information and integration processing model, it builds the
corresponding self-diffusion transmission model for different roads, different
driving direction vehicles and different information integration results. It
also creates autonomous generation and dynamic update models of traffic congestion
information for the whole road network. The traffic simulation and the evaluation
results in a variety of situations show that IVTIS mode and models are reasonable
and basically adapted to autonomous collection and quick transmission for traffic
congestion information in urban road network. |
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