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Search Results: 1 - 10 of 18936 matches for " Song Xiaoqiu "
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Some General Inequalities for Choquet Integral  [PDF]
Xiuli Yang, Xiaoqiu Song, Leilei Huang
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.614201
Abstract: With the development of fuzzy measure theory, the integral inequalities based on Sugeno integral are extensively investigated. We concern on the inequalities of Choquuet integral. The main purpose of this paper is to prove the H?lder inequality for any arbitrary fuzzy measure-based Choquet integral whenever any two of these integrated functions f, g and h are comonotone, and there are three weights. Then we prove Minkowski inequality and Lyapunov inequality for Choquet integral. Moreover, when any two of these integrated functions f1, f2, , fn are comonotone, we also obtain the Hölder inequality, Minkowski inequality and Lyapunov inequality hold for Choquet integral.
The Weakly Asymptotically Almost Periodic Motions of C-Semigroups
C-半群的弱渐近概周期运动

CHEN Chuang,SONG Xiaoqiu,
陈闯
,宋晓秋

系统科学与数学 , 2009,
Abstract: The weakly asymptotically almost periodic(WAAP) motions of C-semigroups in Banach space is considered, the corresponding theorems of presentation and perturbation are obtained.
Banach空间中 GC(0,e) 类广义发展算子的一致指数不稳定性
On uniform exponential instability of?GC(0,e) generalized evolution operator in Banach space

岳田,宋晓秋
YUE Tian
, SONG Xiaoqiu

- , 2018,
Abstract: 研究Bananch 空间中GC(0,e) 类广义发展算子的一致指数不稳定性。基于GC(0,e) 类广义发展算子的定义,应用数学分析与算子理论得到了一致指数不稳定的若干充要条件刻画。所得结果推广和完善了指数稳定性理论中一些已有结果,这对于研究广义发展算子的不稳定性具有重要的理论价值
Banach空间中发展算子一致指数稳定的新标准
New criteria for uniform exponential stability of evolution operators in Banach spaces

岳 田,宋晓秋
YUE Tian
,SONG Xiaoqiu

- , 2017,
Abstract: 利用Lyapunov范数给出了Banach空间中发展算子的一致指数稳定性的新的Datko型标准,所得结果推广了指数稳定性理论中的已有结果.
一阶柯西问题的 Lp最大正则性特征
Characterizations of Lp-maximal regularity for first order Cauchy problems

吴尚伟,宋晓秋,张琬迪
WU Shangwei
,SONG Xiaoqiu,ZHANG Wandi

- , 2018,
Abstract: 首先介绍了一阶柯西问题的 Lp最大正则性的概念.在二阶问题的基础上,创新使用了不同于传统的研究一阶初值问题的存在性、唯一性以及正则性的方法.此外,证明了非齐次柯西问题的 Lp最大正则性与 T和p的选取无关.
Horizontal transfer generates genetic variation in an asexual pathogen
Xiaoqiu Huang
PeerJ , 2015, DOI: 10.7717/peerj.650
Abstract: There are major gaps in the understanding of how genetic variation is generated in the asexual pathogen Verticillium dahliae. On the one hand, V. dahliae is a haploid organism that reproduces clonally. On the other hand, single-nucleotide polymorphisms and chromosomal rearrangements were found between V. dahliae strains. Lineage-specific (LS) regions comprising about 5% of the genome are highly variable between V. dahliae strains. Nonetheless, it is unknown whether horizontal gene transfer plays a major role in generating genetic variation in V. dahliae. Here, we analyzed a previously sequenced V. dahliae population of nine strains from various geographical locations and hosts. We found highly homologous elements in LS regions of each strain; LS regions of V. dahliae strain JR2 are much richer in highly homologous elements than the core genome. In addition, we discovered, in LS regions of JR2, several structural forms of nonhomologous recombination, and two or three homologous sequence types of each form, with almost each sequence type present in an LS region of another strain. A large section of one of the forms is known to be horizontally transferred between V. dahliae strains. We unexpectedly found that 350 kilobases of dynamic LS regions were much more conserved than the core genome between V. dahliae and a closely related species (V. albo-atrum), suggesting that these LS regions were horizontally transferred recently. Our results support the view that genetic variation in LS regions is generated by horizontal transfer between strains, and by chromosomal reshuffling reported previously.
Association between Experiences and Representations: Memory, Dreaming, Dementia and Consciousness
Xiaoqiu Huang
Quantitative Biology , 2013,
Abstract: The mechanisms underlying major aspects of the human brain remain a mystery. It is unknown how verbal episodic memory is formed and integrated with sensory episodic memory. There is no consensus on the function and nature of dreaming. Here we present a theory for governing neural activity in the human brain. The theory describes the mechanisms for building memory traces for entities and explains how verbal memory is integrated with sensory memory. We infer that a core function of dreaming is to move charged particles such as calcium ions from the hippocampus to association areas to primary areas. We link a high level of calcium ions concentrations to Alzheimer's disease. We present a more precise definition of consciousness. Our results are a step forward in understanding the function and health of the human brain and provide the public with ways to keep a healthy brain.
Severe Maternal Hyperglycemia Exacerbates the Development of Insulin Resistance and Fatty Liver in the Offspring on High Fat Diet
Yong Song,Jibin Li,Yong Zhao,Qijuan Zhang,Zhiguo Liu,Jingna Li,Xiaoyi Chen,Zhu Yang,Chao Yu,Xiaoqiu Xiao
Experimental Diabetes Research , 2012, DOI: 10.1155/2012/254976
Abstract: Background. Adverse maternal environments may predispose the offspring to metabolic syndrome in adulthoods, but the underlying mechanism has not been fully understood. Methods. Maternal hyperglycemia was induced by streptozotocin (STZ) injection while control (CON) rats received citrate buffer. Litters were adjusted to eight pups per dam and then weaned to standard diet. Since 13 weeks old, a subset of offspring from STZ and CON dams were switched to high fat diet (HFD) for another 13 weeks. Glucose and insulin tolerance tests (GTT and ITT) and insulin secretion assay were performed; serum levels of lipids and leptin were measured. Hepatic fat accumulation and islet area were evaluated through haematoxylin and eosin staining. Results. STZ offspring exhibited lower survival rate, lower birth weights, and growth inhibition which persisted throughout the study. STZ offspring on HFD showed more severe impairment in GTT and ITT, and more profound hepatic steatosis and more severe hyperlipidemia compared with CON-HFD rats. Conclusions. Offspring from diabetic dams would be prone to exhibit low birth weight and postnatal growth inhibition, but could maintain normal glucose tolerance and insulin sensitivity. HFD accelerates development of insulin resistance in the offspring of diabetic dams mainly via a compensatory response of islets.
THE CONVERGENCE OF A CLASS OF TWO-STEP CONTINUITY RUNGE-KUTTA METHODS FOR SOLVING SINGULAR DELAY DIFFERENTIAL EQUATIONS
一类求解奇异延迟微分方程的两步连续Runge-Kutta方法的收敛性

Leng Xin,Liu Degui,Song Xiaoqiu,Chen Lirong,
冷欣
,刘德贵,宋晓秋,陈丽容

计算数学 , 2006,
Abstract: In this paper, a class of two-step continuity Runge-Kutta(TSCRK) methods for solving delay differential equations where delay lies in the span of the current step is presented. Under certain conditions, we prove the convergence property of the method. Some examples show the efficiency of the method.
Severe Maternal Hyperglycemia Exacerbates the Development of Insulin Resistance and Fatty Liver in the Offspring on High Fat Diet
Yong Song,Jibin Li,Yong Zhao,Qijuan Zhang,Zhiguo Liu,Jingna Li,Xiaoyi Chen,Zhu Yang,Chao Yu,Xiaoqiu Xiao
Journal of Diabetes Research , 2012, DOI: 10.1155/2012/254976
Abstract: Background. Adverse maternal environments may predispose the offspring to metabolic syndrome in adulthoods, but the underlying mechanism has not been fully understood. Methods. Maternal hyperglycemia was induced by streptozotocin (STZ) injection while control (CON) rats received citrate buffer. Litters were adjusted to eight pups per dam and then weaned to standard diet. Since 13 weeks old, a subset of offspring from STZ and CON dams were switched to high fat diet (HFD) for another 13 weeks. Glucose and insulin tolerance tests (GTT and ITT) and insulin secretion assay were performed; serum levels of lipids and leptin were measured. Hepatic fat accumulation and islet area were evaluated through haematoxylin and eosin staining. Results. STZ offspring exhibited lower survival rate, lower birth weights, and growth inhibition which persisted throughout the study. STZ offspring on HFD showed more severe impairment in GTT and ITT, and more profound hepatic steatosis and more severe hyperlipidemia compared with CON-HFD rats. Conclusions. Offspring from diabetic dams would be prone to exhibit low birth weight and postnatal growth inhibition, but could maintain normal glucose tolerance and insulin sensitivity. HFD accelerates development of insulin resistance in the offspring of diabetic dams mainly via a compensatory response of islets. 1. Introduction Metabolic syndrome (MetS) is a clustering of metabolic disorders including hyperglycemia, hypertension, dyslipidemia, overweight, and central obesity, with insulin resistance as the central feature of this syndrome [1]. A global increase in the prevalence of MetS has been found in the last decades due to the worldwide epidemic of obesity [2, 3]. The risk of the MetS depends on genetic susceptibility but is modulated by pre- and postnatal environmental factors. A growing body of evidence suggests that adverse environmental conditions during crucial periods of development may predispose individuals to develop different components of the MetS in adulthood [4]. Of particular note is maternal diabetes, including type 1 and type 2 diabetes and gestational diabetes mellitus (GDM). An overall increasing prevalence of diabetes indicates an emergence of diabetes among childbearing women. During pregnancy, especially during critical window periods for organogenesis and fetal development, unsatisfactory glycemic control is known to increase the incidence of severe obstetrical complications, including preeclampsia, macrosomia, and Caesarean section. Additionally, intrauterine exposure to a hyperglycemic environment predisposes
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