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Search Results: 1 - 10 of 80961 matches for " Zhiying Liu "
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A Study on Credit Appraisal System of C2C E-Commerce
—Based on the Analysis of Taobao
 [PDF]

Jiangang Pang, Zhiying Liu
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.412078
Abstract: In the virtual network environment, the C2C e-commerce has some problems in product quality, service, credit speculation. At present the credit appraisal system offered by domestic C2C e-commerce website ensures the network security to a certain extent while it has some problems in identity verification, evaluation rules and model, credit of buyers and sellers and so on. Focused on the largest national C2C shopping website—Taobao, this article mainly analyzes the present situations and problems of the credit appraisal system, puts forward some improved suggestions of the real-name authentication, credit and transaction appraisal rules and so forth, and then establishes improved credit appraisal system.
Empirical Research on the Industrial R & D Investment and “Two Oriented Society” Construction in China—On the Analysis of Anhui Industrial Sector  [PDF]
Shanshan Zheng, Biao Luo, Zhiying Liu, Wei Song
Journal of Service Science and Management (JSSM) , 2015, DOI: 10.4236/jssm.2015.81004
Abstract: In this paper, we estimated the level of “Two Oriented Society” of Anhui province industrial sector by Principal Component Analysis based on the data of 2000-2008, then we constructed a grey correctional degree model to analyze the relationship between R & D investment and “Two Oriented Society”. The empirical results showed that R & D investment would promote “Two Oriented Society” construction, especially the high-quality scientists.
The fractal dimensions of the spectrum of Sturm Hamiltonian
Qinghui Liu,Yanhui Qu,Zhiying Wen
Mathematics , 2013,
Abstract: Let $\alpha\in(0,1)$ be irrational and $[0;a_1,a_2,\cdots]$ be the continued fraction expansion of $\alpha$. Let $H_{\alpha,V}$ be the Sturm Hamiltonian with frequency $\alpha$ and coupling $V$, $\Sigma_{\alpha,V}$ be the spectrum of $H_{\alpha,V}$. The fractal dimensions of the spectrum have been determined by Fan, Liu and Wen (Erg. Th. Dyn. Sys.,2011) when $\{a_n\}_{n\ge1}$ is bounded. The present paper will treat the most difficult case, i.e, $\{a_n\}_{n\ge1}$ is unbounded. We prove that for $V\ge24$, $$ \dim_H\ \Sigma_{\alpha,V}=s_*(V)\ \ \ \text{and}\ \ \ \bar{\dim}_B\ \Sigma_{\alpha,V}=s^*(V), $$ where $s_*(V)$ and $s^*(V)$ are lower and upper pre-dimensions respectively. By this result, we determine the fractal dimensions of the spectrums for all Sturm Hamiltonians. We also show the following results: $s_*(V)$ and $s^*(V)$ are Lipschitz continuous on any bounded interval of $[24,\infty)$; the limits $s_*(V)\ln V$ and $s^*(V)\ln V$ exist as $V$ tend to infinity, and the limits are constants only depending on $\alpha$; $s^\ast(V)=1$ if and only if $\limsup_{n\to\infty}(a_1\cdots a_n)^{1/n}=\infty,$ which can be compared with the fact: $s_\ast(V)=1$ if and only if $\liminf_{n\to\infty}(a_1\cdots a_n)^{1/n}=\infty$(Liu and Wen, Potential anal. 2004).
Effect of Wine and Vinegar Processing of Rhizoma Corydalis on the Tissue Distribution of Tetrahydropalmatine, Protopine and Dehydrocorydaline in Rats
Zhiying Dou,Kefeng Li,Ping Wang,Liu Cao
Molecules , 2012, DOI: 10.3390/molecules17010951
Abstract: Vinegar and wine processing of medicinal plants are two traditional pharmaceutical techniques which have been used for thousands of years in China. Tetrahydropalmatine (THP), dehydrocorydaline (DHC) and protopine are three major bioactive molecules in Rhizoma Corydalis. In this study, a simple and reliable HPLC method was developed for simultaneous analysis of THP, DHC and protopine in rat tissues after gastric gavage administration of Rhizoma Corydalis. The validated HPLC method was successfully applied to investigate the effect of wine and vinegar processing on the compounds’ distribution in rat tissues. Our results showed that processing mainly affect the Tmax and mean residence time (MRT) of the molecules without changing their Cmax and AUC0–24 h Vinegar processing significantly increased the Tmax of DHC in heart, kidney, cerebrum, cerebrellum, brain stem and striatum and prolonged the Tmax of protopine in brain. No significant changes were observed on the Tmax of THP in rat tissues after vinegar processing. Wine processing reduced the Tmax of protopine and DHC in liver and spleen and Tmax of protopine in lung, but increased the Tmax of THP in all the rat tissues examined. To our knowledge, this is the first report on the effects of processing on the tissue distribution of the bioactive molecules from Rhizoma Corydalis.
The Seismic-Geological Comprehensive Prediction Method of the Low Permeability Calcareous Sandstone Reservoir  [PDF]
Hongyan Jiao, Zhiying Ding
Open Journal of Geology (OJG) , 2016, DOI: 10.4236/ojg.2016.68058
Abstract: Currently in Niu-zhuang sub-sag, the seismic reflection amplitude of the newly discovered turbidite sandstone is stronger in the third Segment. The main reason is that Calcareous components accounts for a large part and physical properties is relatively poor, which results in no corresponding relation between reservoir and seismic attributes, and effective reservoir is difficult to predict and describe. Therefore, using the method of geological statistics, we firstly study the distribution of calcareous matters, secondly study the contribution to seismic reflection amplitude made by Calcareous high impedance component; thirdly analyze its influence on actual seismic reflection amplitude and determine the lithology thickness of Calcareous via replacement forward modeling. At last, we characterize the reservoir using the amplitude of calcareous matters. It proves that the method of seismic-geological comprehensive prediction is reliable. It has good guidance for exploration and development of the calcareous sand lithologic reservoir in similar areas.
Transcriptomic Analysis of the Rice White Tip Nematode, Aphelenchoides besseyi (Nematoda: Aphelenchoididae)
Feng Wang, Danlei Li, Zhiying Wang, Airong Dong, Lihong Liu, Buyong Wang, Qiaoli Chen, Xiaohan Liu
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0091591
Abstract: Background The rice white tip nematode Aphelenchoides besseyi, a devastating nematode whose genome has not been sequenced, is distributed widely throughout almost all the rice-growing regions of the world. The aims of the present study were to define the transcriptome of A. besseyi and to identify parasite-related, mortality-related or host resistance-overcoming genes in this nematode. Methodology and Principal Findings Using Solexa/Illumina sequencing, we profiled the transcriptome of mixed-stage populations of A. besseyi. A total of 51,270 transcripts without gaps were produced based on high-quality clean reads. Of all the A. besseyi transcripts, 9,132 KEGG Orthology assignments were annotated. Carbohydrate-active enzymes of glycoside hydrolases (GHs), glycosyltransferases (GTs), carbohydrate esterases (CEs) and carbohydrate-binding modules (CBMs) were identified. The presence of the A. besseyi GH45 cellulase gene was verified by in situ hybridization. Given that 13 unique A. besseyi potential effector genes were identified from 41 candidate effector homologs, further studies of these homologs are merited. Finally, comparative analyses were conducted between A. besseyi contigs and Caenorhabditis elegans genes to look for orthologs of RNAi phenotypes, neuropeptides and peptidases. Conclusions and Significance The present results provide comprehensive insight into the genetic makeup of A. besseyi. Many of this species' genes are parasite related, nematode mortality-related or necessary to overcome host resistance. The generated transcriptome dataset of A. besseyi reported here lays the foundation for further studies of the molecular mechanisms related to parasitism and facilitates the development of new control strategies for this species.
Moran sets and Moran classes
Zhiying Wen
Chinese Science Bulletin , 2001, DOI: 10.1007/BF02901155
Abstract: The purpose of this survey is to present Moran sets and Moran classes which generalize the classical selfsimilar sets from the following points: (i) The placements of the basic sets at each step of the constructions can be arbitrary; (ii) the contraction ratios may be different at each step; and (iii) the lower limit of the contraction ratios permits zero. In this discussion we will present geometrical properties and results of dimensions of these sets and classes, and discuss conformai Moran sets and random Moran sets as well.
Impact of Climate Change on the Global Environment and Associated Human Health  [PDF]
Zhiying Shi
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104934
Abstract:
As an important part of the natural environment on which human beings live, any change in climate will affect the natural ecosystem, social economy and human health. The impact of global climate change on human beings will be comprehensive, multi-scale and multi-layered. This paper mainly explores the research progress on the direct and indirect impacts of climate change on human health. It considers that the impacts of climate change on human health mainly include the following aspects: 1) heat wave effects; 2) extreme weather events; 3) insect-borne infectious disease; 4) hunger and malnutrition. In the end, the paper puts forward some suggestions about how to confront with the prevention of various diseases in the context of climate change. The impact of climate change on human health will be the focus of future research, which deserves much attention both at home and abroad.
Mining cotton fiber strength candidate genes based on transcriptome mapping
HengWei Liu,XingFen Wang,YuXin Pan,RuiFeng Shi,GuiYin Zhang,ZhiYing Ma
Chinese Science Bulletin , 2009, DOI: 10.1007/s11434-009-0708-z
Abstract: Cotton fiber strength is mainly determined during the secondary cell wall (SCW) thickening stage. In 24–25 days post anthesis (DPA) of SCW thickening stage, cDNA-amplified fragment length polymorphism (AFLP) was carried out to construct fiber transcriptome groups. Based on these groups, cotton fiber strength candidate genes were detected by composite interval mapping (CIM) through quantitative trait locus (QTL) scanning. The mapping population was the interspecific backcross BC1 of Gossypium hirsutum × G. barbadense. One hundred and fifteen BC1 plants were used for group construction with 102 qualified absence/presence polymorphic transcript-derived fragments (TDFs) from G. barbadense, and 78 TDFs were assigned into eight transcriptome groups that gave a total length of 462.63 centimorgans (cM). Two significant QTLs, FS1 and FS2, were detected and explained 16.08% and 15.87% of fiber strength variance, respectively. Of the six TDFs co-segregating with FS1 and FS2, except one encoding an unknown protein, five targeted putative phosphatidylinositol kinase, trehalose-6-phosphate synthase, MADS transcription factor, cellulose synthase-like protein and phenylalanine ammonia lyase, respectively. These functional genes were involved in plant cell wall morphogenesis or cellulose synthesis metabolism processes, and were considered as the candidate genes controlling cotton fiber strength.
Improved electrical resistance-pressure strain sensitivity of carbon nanotube network/polydimethylsiloxane composite using filtration and transfer process
Qiang Lü,Hui Cao,XiaoHui Song,Han Yan,ZhiYing Gan,Sheng Liu
Chinese Science Bulletin , 2010, DOI: 10.1007/s11434-009-0562-z
Abstract: The electrical resistance-pressure strain sensitivity of carbon nanotube network (NTN)/polymer composite is investigated. In this research, polydimethylsiloxane (PDMS) is used as the polymer matrix. The composite of NTN embedded in PDMS matrix has been fabricated by using filtration and transfer process. The thickness of NTN/PDMS composite can be controlled. Electrical resistance and pressure strain of the NTN/PDMS composite are measured simultaneously. Electrical resistance of NTN/PDMS composite has been obtained as a function of pressure strain. The NTN/PDMS composite exhibits linear change in electrical resistance as a result of pressure strain and has improved electrical resistance-pressure strain sensitivity. The NTN/PDMS composite has 90.6% resistance change at 6% pressure strain. The electrical resistance-pressure strain sensitivity of NTN/PDMS composite using filtration and transfer process is 2.13 times of the traditional NTN/PDMS composite. The characteristic in electrical resistance change implies that NTN/PDMS composite can be used as pressure strain sensors and applied to sensor systems.
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