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Search Results: 1 - 10 of 88526 matches for " Xia Chen "
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Relationship among Satisfaction with Life, Family Care Degree, Psychological Dependency and Subjective Bias of Senior High School Student  [PDF]
Ying Guo, Xia Chen
Psychology (PSYCH) , 2016, DOI: 10.4236/psych.2016.73044
Abstract:

The purpose of the present study was to learn the relationship among satisfaction with life, family care degree, psychological dependency and subjective bias of senior high school student. We are using the Life Satisfaction Scale (LSIB), Family Care Scale (APGAR), Dependent Scale (Dy), Prejudice Scale (Pr), for 300 high school students in the school randomly sampling survey. Life satisfaction was investigated with the APGAR test, psychological dependence, prejudice relationship personality. Through this study, we have drawn the following results: 1) Life satisfaction was significantly positively correlated with the degree of care to the family (r = 0.311, p < 0.01), and psychological dependence (r = -0.399, p < 0.01), subjective bias negative correlation (r = -0.328, p < 0.01). APGAR and dependence (r = -0.147, p < 0.05), biased were negatively correlated (r = -0.134, p < 0.05). Dependence and prejudice were positive correlation (r= 0.661, p < 0.01); 2) as for high school students of different gender within life satisfaction, family care degree, dependency and prejudice score comparison, APGAR t test

The Application and Perspective of Multimedia Technology in Chemistry Experimental Instruction in China  [PDF]
Dimei Chen, Xia Chen, Wenxia Gao
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.44035
Abstract:

The paper elaborates the features and superiority of applying multimedia technology to chemistry experiment instruction in details, and introduces the practical application of multimedia technology in demonstration experiment. The application of multimedia technology in chemistry experimental instruction has its own features, namely enjoyment, great information capacity, sharing network, easy operation and flexibility. The paper concludes the superiority of applying multimedia technology to the chemistry experiment instruction from nine perspectives. Meanwhile, the paper elaborates its disadvantages. Simulated experiments cannot take place of real experiments. The relationship among teachers, students and multimedia needs to be dealt with properly, and the multimedia courseware should be scientific. Prospective forecast of multimedia technology in chemistry experimental instruction is also demonstrated.

Traditional Chinese medicine constitution types in 127 elderly patients with insomnia: an investigation in communities of Yangpu District, Shanghai
Chen Xia
Zhong Xi Yi Jie He Xue Bao , 2012,
Abstract: OBJECTIVE: To analyze the distribution of traditional Chinese medicine constitution types in elderly patients with insomnia.METHODS: The epidemiological data were collected from communities in the Yangpu District, Shanghai via a cross-sectional field survey. The elderly participants were enrolled by using the Pittsburgh Sleep Quality Index (PSQI) scale and the TCM Constitution Questionnaire.RESULTS: (1)The distribution of imbalanced constitutions between the elderly with insomnia and normal subjects showed statistical difference (P<0.01) and the elderly with insomnia tend to be of imbalanced constitutions. Among these unbalanced constitutions, deficient constitutions were more frequent than others in the elderly with insomnia, and yang-deficiency and qi-deficiency occurred mostly in unbalanced and simple constitutions. (2) Blood-stasis and qi-stagnation constitutions were more frequent in females than in males among the elderly with insomnia. Frequency of deficiency constitutions in the elderly increased as the age increases. (3) The frequency of composite constitutions was higher than that of simple constitutions in elderly patients with insomnia (74.8%), among which qi-deficiency was more likely to be composite with other constitutions.CONCLUSION: Identification and classification of traditional Chinese medicine constitution types will provide further information for devising projects with systematic intervention for insomnia management.
Large deviations and laws of the iterated logarithm for the local times of additive stable processes
Xia Chen
Mathematics , 2006, DOI: 10.1214/009117906000000601
Abstract: We study the upper tail behaviors of the local times of the additive stable processes. Let $X_1(t),...,X_p(t)$ be independent, d-dimensional symmetric stable processes with stable index $0<\alpha\le 2$ and consider the additive stable process $\bar{X}(t_1,...,t_p)=X_1(t_1)+... +X_p(t_p)$. Under the condition $d<\alpha p$, we obtain a precise form of the large deviation principle for the local time \[\eta^x([0,t]^p)=\int_0^t...\int_0^t\delta_x\bigl(X_1(s_1)+... +X_p(s_p)\bigr) ds_1... ds_p\] of the multiparameter process $\bar{X}(t_1,...,t_p)$, and for its supremum norm $\sup_{x\in\mathbb{R}^d}\eta^x([0,t]^p)$. Our results apply to the law of the iterated logarithm and our approach is based on Fourier analysis, moment computation and time exponentiation.
Moderate deviations and laws of the iterated logarithm for the local times of additive Lévy processes and additive random walks
Xia Chen
Mathematics , 2007, DOI: 10.1214/009117906000000520
Abstract: We study the upper tail behaviors of the local times of the additive L\'{e}vy processes and additive random walks. The limit forms we establish are the moderate deviations and the laws of the iterated logarithm for the L_2-norms of the local times and for the local times at a fixed site.
Quenched asymptotics for Brownian motion of renormalized Poisson potential and for the related parabolic Anderson models
Xia Chen
Mathematics , 2012, DOI: 10.1214/11-AOP655
Abstract: Let $B_s$ be a $d$-dimensional Brownian motion and $\omega(dx)$ be an independent Poisson field on $\mathbb{R}^d$. The almost sure asymptotics for the logarithmic moment generating function [\log\math bb{E}_0\exp\biggl{\pm\theta\int_0^t\bar{V}(B_s) ds\biggr}\qquad (t\to\infty)] are investigated in connection with the renormalized Poisson potential of the form [\bar{V}(x)=\int_{\mathbb{R}^d}{\frac{1}{|y-x|^p}}[\omega(dy)-dy],\qquad x\in\mathbb{R}^d.] The investigation is motivated by some practical problems arising from the models of Brownian motion in random media and from the parabolic Anderson models.
Exponential asymptotics and law of the iterated logarithm for intersection local times of random walks
Xia Chen
Mathematics , 2005, DOI: 10.1214/009117904000000513
Abstract: Let \alpha ([0,1]^p) denote the intersection local time of p independent d-dimensional Brownian motions running up to the time 1. Under the conditions p(d-2)
Limit laws for the energy of a charged polymer
Xia Chen
Mathematics , 2008, DOI: 10.1214/07-AIHP120
Abstract: In this paper we obtain the central limit theorems, moderate deviations and the laws of the iterated logarithm for the energy \[H_n=\sum_{1\le j
Moderate deviations and law of the iterated logarithm for intersections of the ranges of random walks
Xia Chen
Mathematics , 2005, DOI: 10.1214/009117905000000035
Abstract: Let S_1(n),...,S_p(n) be independent symmetric random walks in Z^d. We establish moderate deviations and law of the iterated logarithm for the intersection of the ranges #{S_1[0,n]\cap... \cap S_p[0,n]} in the case d=2, p\ge 2 and the case d=3, p=2.
Quenched asymptotics for Brownian motion in generalized Gaussian potential
Xia Chen
Mathematics , 2014, DOI: 10.1214/12-AOP830
Abstract: In this paper, we study the long-term asymptotics for the quenched moment \[\mathbb{E}_x\exp \biggl\{\int_0^tV(B_s)\,ds\biggr\}\] consisting of a $d$-dimensional Brownian motion $\{B_s;s\ge 0\}$ and a generalized Gaussian field $V$. The major progress made in this paper includes: Solution to an open problem posted by Carmona and Molchanov [Probab. Theory Related Fields 102 (1995) 433-453], the quenched laws for Brownian motions in Newtonian-type potentials and in the potentials driven by white noise or by fractional white noise.
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