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Search Results: 1 - 10 of 151703 matches for " HUANG Chen-Yang "
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Self-organization and phase transition in financial markets with multiple choices
Li-Xin Zhong,Wen-Juan Xu,Ping Huang,Chen-Yang Zhong,Tian Qiu
Quantitative Finance , 2013, DOI: 10.1016/j.physa.2014.05.039
Abstract: Market confidence is essential for successful investing. By incorporating multi-market into the evolutionary minority game, we investigate the effects of investor beliefs on the evolution of collective behaviors and asset prices. When there exists another investment opportunity, market confidence, including overconfidence and under-confidence, is not always good or bad for investment. The roles of market confidence is closely related to market impact. For low market impact, overconfidence in a particular asset makes an investor become insensitive to losses and a delayed strategy adjustment leads to a decline in wealth, and thereafter, one's runaway from the market. For high market impact, under-confidence in a particular asset makes an investor over-sensitive to losses and one's too frequent strategy adjustment leads to a large fluctuation in asset prices, and thereafter, a decrease in the number of agents. At an intermediate market impact, the phase transition occurs. No matter what the market impact is, an equilibrium between different markets exists, which is reflected in the occurrence of similar price fluctuations in different markets. A theoretical analysis indicates that such an equilibrium results from the coupled effects of strategy updating and shift in investment. The runaway of the agents trading a specific asset will lead to a decline in the asset price volatility and such a decline will be inhibited by the clustering of the strategies. A uniform strategy distribution will lead to a large fluctuation in asset prices and such a fluctuation will be suppressed by the decrease in the number of agents in the market. A functional relationship between the price fluctuations and the numbers of agents is found.
Analysis of internal transcribed spacer regions of main species of the genus Pleurotus

HUANG Chen-Yang,CHEN Qiang,GAO Shan,GAO Wei,ZHANG Jin-Xia,

菌物学报 , 2010,
Abstract: In this study, ITS of 38 strains belonging to 16 species of Pleurotus were sequenced, and the sequence divergences were analyzed intraspecifically and interspecifically. The results showed that sequence divergence was low for 16 Pleurotus species, ranging from 0 to 0.007. The sequence divergence was 0.007 for three P. djamor strains from different geographic locations. The 0.282 divergence was the largest, occurring between P. rattenburyi and P. djamor, and the 0.003 divergence was the smallest, occurring b...
Increased Risk of Dementia in Patients with Mild Traumatic Brain Injury: A Nationwide Cohort Study
Yi-Kung Lee, Sheng-Wen Hou, Ching-Chih Lee, Chen-Yang Hsu, Yung-Sung Huang, Yung-Cheng Su
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0062422
Abstract: Background It is known that the risk of dementia in patients with moderate to severe traumatic brain injury (TBI) is higher. However, the relationship between mild traumatic brain injury (mTBI) and dementia has never been established. Objectives We investigated the incidences of dementia among patients with mTBI in Taiwan to evaluate if there is higher risk compared with general population. Methods We utilized a sampled National Health Insurance (NHI) claims data containing one million beneficiaries. We followed all adult beneficiaries from January 1, 2005 till December 31, 2009 to see if they had been diagnosed with dementia. We further identify patients with mTBI and compared their risk of dementia with the general population. Results We identified 28551 patients with mTBI and 692382 without. After controlled for age, gender, urbanization level, socioeconomic status, diabetes, hypertension, coronary artery disease, hyperlipidemia, history of alcohol intoxication, history of ischemic stroke, history of intracranial hemorrhage and Charlson Comorbidity Index Score, the adjusted hazard ratio is 3.26 (95% Confidence interval, 2.69–3.94). Conclusions TBI is an independent significant risk factor of developing dementia even in the mild type.
A Collaborative Healthcare Service Framework and Performance Evaluation  [PDF]
John Jung-Woon Yoo, Krishnaveni Gnanasekaran, Chen-Yang Cheng
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.46035

While collaboration is becoming increasingly critical in many industries to maximize revenue and minimize cost by taking advantage of other’s expertise, healthcare industry has hardly utilized the advantages of collaboration. This paper proposes a framework for collaborative healthcare services. The proposed framework is based on Service Oriented Architecture using web services and utilizes a medical coding system, Current Procedure Terminology (CPT), for interoperability. The framework is designed to facilitate collaborations among healthcare service providers, and is expected to reduce medical expenditure of patients and increase revenue of healthcare service providers. In order to verify the performance of the proposed framework, a simulation study is conducted. The experimental results show that the framework contributes to utilization increase and treatment lead time decrease in healthcare services.

SNP analysis of the fragments of three functional genes of the mushroom Lentinula edodes

WANG Da-Li,ZHANG Jin-Xi,BIAN Yin-Bing,CHEN Qiang,HUANG Chen-Yang,

菌物学报 , 2013,
Abstract: 以15个香菇栽培品种为材料,对尿嘧啶核苷酸-胞嘧啶核苷酸激酶基因(UMP-CMP kinase gene,uck1)、分裂原活化蛋白激酶基因(mitogen-activated protein kinase gene,mapk)和外切β-1,3葡聚糖酶基因(exo-β-1,3-glucanase-encoding gene,exg1)进行了部分序列的单核苷酸多态性(single nucleotide polymorphism,SNP)分析。结果表明,测序中出现的双峰,是菌丝双核体细胞中两细胞核之间的差异造成的。在采用uck1、mapk和exg1的3,126bp中,共发现48处多态性位点,发生频率为1/65bp,其中36个属于转换、12个为颠换。从群体发生频率上,38个属于超过10%的常见SNP,10个属于罕见SNP。不同基因的SNP发生频率不同,uck1、mapk和exg1的SNP发生频率分别为1.40%、0.82%和2.41%。外显子区SNP数量高于内含子,3个基因在外显子区域分布28个,内含子分布20个。外显子的28个SNP位点中,11个为错义突变,17个为同义突变。错义突变引起了编码氨基酸的改变。对SNP位点的聚类分析表明,15个栽培品种间存在的多态性位点在1–36之间,15个品种的SNP类型不同。uck1,mapk,exg1的SNP可用于香菇栽培品种的鉴别。
Incompatibility factor analysis of Pleurotus nebrodensis

HUANG Chen-Yang,QU Shao-Xuan,GAO Wei,CHEN Qiang,ZHANG Jin-Xia,

菌物学报 , 2009,
Application of CO1 for rapid identification of Pleurotus species

SONG Chi,CHEN Qiang,XU Jing-Yu,ZHANG Jin-Xia,BIAN Yin-Bing,HUANG Chen-Yang,

菌物学报 , 2011,
Abstract: 15 strains belonging to 15 species of Pleurotus were used. Primer CO332F and CO332R were designed by the cytochrome c oxidase subunit 1 gene (CO1) sequence of Pleurotus downloaded from GenBank. Results of the first-step PCR amplification showed that all the strains can get one band. The 15 strains were divided into four groups by the band size. Species-specific primers were designed accordingly. Results of the second-step PCR amplification showed that each species can get one band by the species-specific primers. In conclusion, the 15 species of Pleurotus can be identified by two-step PCR in accordance with the band size and the presence or absence of the band.
Analysis of the mating type factors in natural populations of Pleurotus eryngii var. tuoliensis in China

LI He-Jing,CHEN Qiang,BAU Tolgor,HUANG Chen-Yang,ZHAO Meng-Ran,ZHANG Jin-Xia,

菌物学报 , 2013,
Abstract: In order to investigate the genetic diversity and estimate the genetic abundance of natural populations of Pleurotus eryngii var. tuoliensis, mating type factors in 84 protoplast monokaryons derived from 51 isolations collected from Xinjiang were analyzed. There were 54 different A factors and 59 different B factors in the 84 monokaryons. Chi-square test indicated that A and B factors were distributed with equal probability. Therefore there would be 79 different A factors and 100 distinct B factors in natural populations of P. eryngii var. tuoliensis in Xinjiang, China, and the putative mating type factors from monokaryon are 7,900, and for dikaryon, there would be 31,201,050 in nature. In conclusion, genetic diversity of P. eryngii var. tuoliensis is very high in Xinjiang, and Xinjiang is a valuable wild P. eryngii var. tuoliensis germplasm resource pool.

ZHANG Jin-Xia HUANG Chen-Yang,ZHANG Rui-Ying GUAN Gui-Ping,

菌物学报 , 2004,
Abstract: The genetic diversity of Pleurotus nebrodensis was studied by RAPD and IGS analysis. The RAPD profiles shows a polymorphism among the tested cultivars. IGS1 region keeps conservative and steady, and is no appearance in the diversity. IGS2 region displays an abundant diversity with more evolution. It is recognized that IGS2-RFLP can be used in identification and discrimination of strains in P. nebrodensis. The results of IGS2-RFLP are more steady, more handle and more differentiation than those of RAPD analysis.
Tunable Channel Drop Filter in a Two-Dimensional Photonic Crystal Modulated by a Nematic Liquid Crystal
Chen-Yang Liu,Lien-Wen Chen
Journal of Nanomaterials , 2006, DOI: 10.1155/jnm/2006/52946
Abstract: Photonic crystals (PCs) have many potential applications because of their ability to control light-wave propagation and because PC-based waveguides may be integrated into optical circuits. We propose a novel tunable PC channel drop filter based on nematic liquid crystals and investigate its properties numerically by using the finite-difference time-domain (FDTD) method. The refractive indices of liquid crystals can be actively modulated after infiltrating nematic liquid crystals into the microcavity in PC waveguides with square lattices. Then we can control light propagation in a PC waveguide. We analyze the Q-factors and resonance frequencies of a tunable PC channel drop filter by considering various indices modulation of liquid crystals. The novel component can be used as wavelength division multiplexing in photonic integrated circuits.
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