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Search Results: 1 - 10 of 14603 matches for " WeiHua Jia "
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The Rough Method for Spatial Data Subzone Similarity Measurement  [PDF]
Weihua Liao
Journal of Geographic Information System (JGIS) , 2012, DOI: 10.4236/jgis.2012.41006
Abstract: There are two methods for GIS similarity measurement problem, one is cross-coefficient for GIS attribute similarity measurement, and the other is spatial autocorrelation that is based on spatial location. These methods can not calculate subzone similarity problem based on universal background. The rough measurement based on membership function solved this problem well. In this paper, we used rough sets to measure the similarity of GIS subzone discrete data, and used neighborhood rough sets to calculate continuous data’s upper and lower approximation. We used neighborhood particle to calculate membership function of continuous attribute, then to solve continuous attribute’s subzone similarity measurement problem.
Study on Reserved Talents in Competition Sports in Henan Province during the Period of Post-Olympics  [PDF]
Weihua Yao
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.37B013
Abstract:

Utilizing the methods of documentation, questionnaire, and statistics and so on, this paper prosecutes an investigation of the current situation of reserved talents in competitive sports in Henan province to analyze the existing main problems and put forward the proper strategy for development aiming at providing theoretical basis and practice reference for its healthy development.

Lower Approximation Reduction in Ordered Information System with Fuzzy Decision  [PDF]
Xiaoyan Zhang, Weihua Xu
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.27125
Abstract: Attribute reduction is one of the most important problems in rough set theory. This paper introduces the concept of lower approximation reduction in ordered information systems with fuzzy decision. Moreover, the judgment theorem and discernable matrix are obtained, in which case an approach to attribute reduction in ordered information system with fuzzy decision is constructed. As an application of lower approximation reduction, some examples are applied to examine the validity of works obtained in our works..
Rough Computational Approach to UAR based on Dominance Matrix in IOIS  [PDF]
Xiaoyan Zhang, Weihua Xu
Intelligent Information Management (IIM) , 2011, DOI: 10.4236/iim.2011.34016
Abstract: Rough set theory is a new mathematical tool to deal with vagueness and uncertainty. The classical rough set theory based on equivalence relation has made a great progress, while the equivalence relation is too harsh to meet and is extended to dominance relation in real world. It is important to investigate rough computational methods for rough set theory, which is one of the bottleneck problems in the development of rough set theory. In this article, rough computational approach to upper ap-proximation reduction (UAR) is discussed based on dominance matrix in inconsistent ordered information systems (IOIS). The algorithm of upper approximation reduction is obtained, from which we can provide approach to upper approximation reduction operated simply in inconsistent systems based on dominance relations. Finally, an example illustrates the validity of this method, and shows the method is excellent to a complicated information system.
Methods for Lower Approximation Reduction in Inconsistent Decision Table Based on Tolerance Relation  [PDF]
Xiaoyan Zhang, Weihua Xu
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.41024
Abstract: It is well known that most of information systems are based on tolerance relation instead of the classical equivalence relation because of various factors in real-world. To acquire brief decision rules from the information systems, lower approximation reduction is needed. In this paper, the lower approximation reduction is proposed in inconsistent information systems based on tolerance relation. Moreover, the properties are discussed. Furthermore, judgment theorem and discernibility matrix are obtained, from which an approach to lower reductions can be provided in the complicated information systems.

Positive Solutions for Fractional Differential Equations with Multi-Point Boundary Value Problems  [PDF]
Lina Zhou, Weihua Jiang
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.25014
Abstract: In this paper, a fractional multi-point boundary value problem is considered. By using the fixed point index theory and Krein-Rutman theorem, some results on existence are obtained.
The Virtual Repeat Sale Model for the House Price Index for New Building in China  [PDF]
Weihua Jin, Shengping Jin
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.521320
Abstract: By using the characteristics of the new building in China, this article constructs the virtual repeat sale method to produce virtual repeat data which is similar to the repeat sale model on the house price index. Case-Shiller procedure and OFHEO method are used to calculate the house price index for new building in China. A discussion is given and furthering models are needed to take advantage of the virtual repeat sale data.
30Gbit/s Parallel Optical Receiver Module
Chen Hongd,Jia Jiuchun,Pei Weihua,Tang Jun,
Chen Hong
,Jia Jiuchun,Pei Weihu,Tang Jun

半导体学报 , 2006,
Abstract: A 30Gbit/s receptor module is developed with a CMOS integrated receiver chip(IC) and a GaAs-based 1×12 photo detector array of PIN-type.Parallel technology is adopted in this module to realize a high-speed receiver module with medium speed devices.A high-speed printed circuit board(PCB) is designed and produced.The IC chip and the PD array are packaged on the PCB by chip-on-board technology.Flip chip alignment is used for the PD array accurately assembled on the module so that a plug-type optical port is built.Test results show that the module can receive parallel signals at 30Gbit/s.The sensitivity of the module is -13.6dBm for 1E-13BER.
Evidence for association between Disrupted-in-schizophrenia 1 (DISC1) gene polymorphisms and autism in Chinese Han population: a family-based association study
Fanfan Zheng, Lifang Wang, Meixiang Jia, Weihua Yue, Yan Ruan, Tianlan Lu, Jing Liu, Jun Li, Dai Zhang
Behavioral and Brain Functions , 2011, DOI: 10.1186/1744-9081-7-14
Abstract: We genotyped seven tag single nucleotide polymorphisms (SNPs) in DISC1, spanning 338 kb, in 367 autism trios (singleton and their biological parents) including 1,101 individuals. Single SNP association and haplotype association analysis were performed using the family-based association test (FBAT) and Haploview software.We found three SNPs showed significant associations with autism (rs4366301: G > C, Z = 2.872, p = 0.004; rs11585959: T > C, Z = 2.199, p = 0.028; rs6668845: A > G, Z = 2.326, p = 0.02). After the Bonferroni correction, SNP rs4366301, which located in the first intron of DISC1, remained significant. When haplotype were constructed with two-markers, three haplotypes displayed significant association with autism. These results were still significant after using the permutation method to obtain empirical p values.Our study provided evidence that the DISC1 may be the susceptibility gene of autism. It suggested DISC1 might play a role in the pathogenesis of autism.Autism is a severe neurodevelopmental disorder mainly characterized by impairment in social interaction, communicative deficits, and repetitive and stereotyped patterns of behaviors or interests [1]. Since autism was first described as a disorder by Dr. Leo Kanner in 1943 [2], the speculation about its etiology has become an intriguing field which attracts a large number of scientists. To date, compelling evidence from twin and family studies has indicated a strong genetic involvement in the etiology of autism and the estimated heritability is over 90% [3-7]. However, the genetic etiology remains elusive.Several lines of evidence from postmortem [8-10] and structural magnetic resonance imaging (MRI) [11-16] supported the existence of brain abnormality in autism. It indicated that brain abnormalities in autism are not limited to a single brain area but involve different structures within a globally affected neuronal network. Furthermore, functional MRI studies in autism patients have indicated tha
Sequencing ASMT Identifies Rare Mutations in Chinese Han Patients with Autism
Lifang Wang, Jun Li, Yanyan Ruan, Tianlan Lu, Chenxing Liu, Meixiang Jia, Weihua Yue, Jing Liu, Thomas Bourgeron, Dai Zhang
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0053727
Abstract: Melatonin is involved in the regulation of circadian and seasonal rhythms and immune function. Prior research reported low melatonin levels in autism spectrum disorders (ASD). ASMT located in pseudo-autosomal region 1 encodes the last enzyme of the melatonin biosynthesis pathway. A previous study reported an association between ASD and single nucleotide polymorphisms (SNPs) rs4446909 and rs5989681 located in the promoter of ASMT. Furthermore, rare deleterious mutations were identified in a subset of patients. To investigate the association between ASMT and autism, we sequenced all ASMT exons and its neighboring region in 398 Chinese Han individuals with autism and 437 healthy controls. Although our study did not detect significant differences of genotypic distribution and allele frequencies of the common SNPs in ASMT between patients with autism and healthy controls, we identified new rare coding mutations of ASMT. Among these rare variants, 4 were exclusively detected in patients with autism including a stop mutation (p.R115W, p.V166I, p.V179G, and p.W257X). These four coding variants were observed in 6 of 398 (1.51%) patients with autism and none in 437 controls (Chi-Square test, Continuity Correction p = 0.032, two-sided). Functional prediction of impact of amino acid showed that p.R115W might affect protein function. These results indicate that ASMT might be a susceptibility gene for autism. Further studies in larger samples are needed to better understand the degree of variation in this gene as well as to understand the biochemical and clinical impacts of ASMT/melatonin deficiency.
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