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Dividend Maximization when Cash Reserves Follow a Jump-diffusion Process

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Communications in Mathematical Research 2009年第2期25卷 143-158页

作者： li li-li FENG jing-hai SONG li-XIN Department of Applied Mathematics Dalian University of Technology Dalian 116024

This paper deals with the dividend optimization problem for an insurance company, whose surplus follows a jump-diffusion process. The objective of the company is to maximize the expected total discounted dividends paid out until the time of ruin. Under concavity assumption on the optimal value function, the paper states some general properties and, in particular, smoothness results on the optimal value function, whose analysis mainly relies on viscosity solutions of the associated Hamilton-Jacobi-Bellman （HJB） equations. Based on these properties, the explicit expression of the optimal value function is obtained. And some numerical calculations are presented as the application of the results.

关键词： jump-diffusion model dividend payment Hamilton-Jacobi-Bellmanequation viscosity solution

Expression and Emmprin Regulated Function of Aquaporinl in SMMC7221 Cells

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Chemical Research in Chinese Universities 2010年第4期26卷 578-582页

作者： li Jiang ZHANG Ai-li TONG Qian ZHANG Jun-fang li hai-jing ZHAO Bing MA Tong-hui li Xiao-men School of life Sciences Northeast Normal University Changchun 130024 P. R. China Dental Hospital First Hospital Jilin University Changehun 130021 P. R. China Department of Cardiology First Hospital Jilin University Changehun 130021 P. R. China

Herein lie the crosstalk and regulation between AQP1 and Emmprin in SMMC7221 cells by means of siRNA technology and deglycosylation method. Firstly, HAQP1, rather than hAQP3, was selectively upregulated in SMMC7221 cells by FBS, flollowed by the upregulated expression of Emmprin. Emmprin gene silencing caused a remarkable change in the expression ofAQP1 gene, just like its downstream gene, MMP9, meanwhile the water permeability and cell migration were also descended prominently. Furthermore, when treated with tunicamycin, Emmprin was deglycosylated, which made the expression of AQP 1 significantly declined, followed by remarkably decreased cell membrane water permeability and cell migration. Taken together, all the data indicates the expression level and the modification of Emmprin by glycosylation are the key factors in regulating the expression of AQP1.

关键词： Aquaporinl Emmprin Cell migration

Genome-wide association study for numbers of vertebrae in Dezhou donkey population reveals new candidate genes

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Journal of Integrative Agriculture 2023年第10期22卷 3159-3169页

作者： SUN Yan li Yu-hua ZHAO Chang-heng TENG Jun WANG Yong-hui WANG Tian-qi SHI Xiaoyuan liU Zi-wen li hai-jing WANG Ji-jing WANG Wen-wen NING Chao WANG Chang-fa ZHANG Qin Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention College of Animal Science and TechnologyShandong Agricultural UniversityTai’an 271018P.R.China liaocheng Research Institute of Donkey High-Efficiency Breeding and Ecological Feeding Liaocheng UniversityLiaocheng 252059P.R.China National Engineering Research Center for Gelatin-Based Traditional Chinese Medicine Dong-E E-Jiao Co.Ltd.Liaocheng 252200P.R.China Shandong Provincial Key Laboratory of Animal Disease Control and Breeding Institute of Animal Science and Veterinary MedicineShandong Academy of Agricultural SciencesJinan 250100P.R.China

Numbers of vertebrae is an important economic trait associated with body size and meat productivity in ***,the genetic basis of vertebrae number in donkey remains to be well *** aim of this study was to identify candidate genes affecting the number of thoracic(TVn)and the number of lumbar vertebrae(LVn)in Dezhou donkey.A genome-wide association study was conducted using whole genome sequence data imputed from low-coverage genome *** TVn,we identified 38 genome-wide significant and 64 suggestive SNPs,which relate to 7 genes(NLGN1,DCC,SLC26A7,TOX,WNT7A,LOC123286078,and LOC123280142).For LVn,we identified 9 genome-wide significant and 38 suggestive SNPs,which relate to 8 genes(GABBR2,FBXO4,LOC123277146,LOC123277359,BMP7,B3GAT1,EML2,and LRP5).The genes involve in the Wnt and TGF-βsignaling pathways and may play an important role in embryonic development or bone formation and could be good candidate genes for TVn and LVn.

关键词： numbers of vertebrae GWAS genotype imputation Dezhou donkey

Diagnosis of chest pain with foregut symptoms in Chinese patients

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World Journal of Gastroenterology 2009年第6期15卷 742-747页

作者： Bo Deng Ru-Wen Wang Yao-Guang Jiang Qun-You Tan Xiang-li liao jing-hai Zhou Yun-Ping Zhao Tai-Qian Gong Zheng Ma Thoracic Surgery Department Institute of Surgery Research Daping Hospital The Third Military Medical University Chongqing 400042 China

AIM:To evaluate the diagnosis of chest pain with foregut symptoms in Chinese patients. METHODS:Esophageal manometric studies, 24-h introesophageal pH monitoring and 24-h electrocardiograms(Holter electrocardiography)were performed in 61 patients with chest pain. RESULTS:Thirty-nine patients were diagnosed with non-specific esophageal motility disorders(29 patients with abnormal gastroesophageal reflux and eight patients with myocardial ischemia).Five patients had diffuse spasm of the esophagus plus abnormal gastroesophageal reflux(two patients had concomitant myocardial ischemia),and one patient was diagnosed with nutcracker esophagus. CONCLUSION:The esophageal manometric studies, 24-h intra-esophageal pH monitoring and Holter electrocardiography are significant for the differential diagnosis of chest pain,particularly in patients with foregut *** cases of esophageal motility disorders,pathological gastroesophageal reflux may be a major cause of chest pain with non-specific esophageal motility *** of the esophageal smooth muscle might affect the heart-coronary smooth muscle,leading to myocardial ischemia.

关键词： Chest pain Esophageal manometric Twenty-four-hour intra-esophageal pH monitoring Holter electrocardiography

A Class of Analytic Functions of Complex Order

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Chinese Quarterly Journal of Mathematics 2010年第3期25卷 414-421页

作者： li Shu-hai YANG jing-yu Department of Mathematics Chifeng College Chifeng 024001 China

In this paper,the integral expression,coefficient inequality and distortion theorems are given for the class of analytic functions L（λ,b,A,B） which defined by making use of Ruscheweyh *** paper spreads the result o... 详细信息

关键词： starlike convex complex order

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自主创新能力与可持续发展

中国流通经济 2007年第10期21卷 4-6页

作者：李静海中国科学院北京市100864

一个国家的自主创新能力与其科技创新体系密切相关。科技创新体系由政府、科研机构和大学、企业、市场四个部分组成,每个部分之间都存在效率问题,各环节的效率共同决定了该国的自主创新能力。对于科技界来说,重要的是评价现有的科技体... 详细信息

一个国家的自主创新能力与其科技创新体系密切相关。科技创新体系由政府、科研机构和大学、企业、市场四个部分组成,每个部分之间都存在效率问题,各环节的效率共同决定了该国的自主创新能力。对于科技界来说,重要的是评价现有的科技体系是不是最优,而科技体系不能以工业布局为依据来构建,应该找出各工业之间的共性技术,开发共性能力。可持续发展涉及经济、社会和自然及其相互关系,不能忽视任何一个方面。保持可持续发展必须使资源的供应量与消耗量相等,充分利用可再生能源,循环经济的重要作用就是在物质的循环和能量利用方面达到平衡,同时,实现可持续发展的一个重要条件是政府、企业、金融等方面密切合作。

关键词：自主创新科技创新体系可持续发展循环经济

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自由主义与政府干预

经济问题 2007年第8期336卷 15-18页

作者：李景海暨南大学经济学院广州510632

政府在国家经济发展中的作用非常重要。在自由主义和政府干预的演变历程中,在不同的时期、不同的条件下,政府干预发挥的作用、手段和方式也不相同,自由主义要求构建的是一个好的市场经济和一个有边界的政府,这对中国经济的改革发展具有... 详细信息

政府在国家经济发展中的作用非常重要。在自由主义和政府干预的演变历程中,在不同的时期、不同的条件下,政府干预发挥的作用、手段和方式也不相同,自由主义要求构建的是一个好的市场经济和一个有边界的政府,这对中国经济的改革发展具有重要意义。

关键词：自由主义政府干预竞争边界

产业集聚与区域产业升级的互动机制研究——以虎门服装产业集聚为例

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广东商学院学报 2011年第1期26卷 70-75页

作者：李景海南方医科大学经济学系广东广州510515

产业集聚具有地域空间性和市场自组织性。产业集聚有助于本地产业化和企业家精神的培育,能促进产业链的专业化分工和产业专业化配套服务的完善,助推区域产业结构、技术结构和产品结构的调整,从而推动地方产业升级。虎门服装产业集聚的... 详细信息

产业集聚具有地域空间性和市场自组织性。产业集聚有助于本地产业化和企业家精神的培育,能促进产业链的专业化分工和产业专业化配套服务的完善,助推区域产业结构、技术结构和产品结构的调整,从而推动地方产业升级。虎门服装产业集聚的发展历程印证了产业集聚和产业升级的互动关系,为其他地区的产业升级提供了借鉴和思路。

关键词：产业集聚产业升级区域经济虎门服装产业

准分子激光角膜上皮瓣下磨镶术治疗准分子激光原位角膜磨镶术后残留近视及散光

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中华眼科杂志 2005年第11期41卷 981-985页

作者：李艳李镜海周芳山东省立医院眼科激光中心济南250021 山东大学齐鲁医院眼科

目的探讨准分子激光角膜上皮瓣下磨镶术(LASEK)治疗准分子激光原位角膜磨镶术(LASIK)后残留近视及散光的疗效。方法对我院自2000年4月至2004年1月间用LASEK治疗LASIK术后残留近视及散光患者34例(66只眼)进行随访,观察术后症状、角膜上... 详细信息

目的探讨准分子激光角膜上皮瓣下磨镶术(LASEK)治疗准分子激光原位角膜磨镶术(LASIK)后残留近视及散光的疗效。方法对我院自2000年4月至2004年1月间用LASEK治疗LASIK术后残留近视及散光患者34例(66只眼)进行随访,观察术后症状、角膜上皮瓣愈合时间、视力、屈光度数、波阵面像差及角膜上皮下雾状混浊(haze)形成情况。随访时间平均13.2个月。结果34例(66只眼)平均等效球镜为(-3.20±0.32)D,所有患者均一次完成手术,有3只眼上皮瓣周边部有破损,其余完好。术后1d上皮瓣基本透明者55只眼,11只眼有轻度的水肿。取镜时间平均为(3.35±0.49)d。术后3个月有56只眼(85%)屈光度数介于±0.50D之间,64只眼(97%)屈光度数介于±1.00D之间。有3只眼最佳矫正视力较术前提高1行,2只眼提高2行,无最佳矫正视力下降者。术后3个月高阶像差较术前增大。术后3个月haze0.5级者10只眼(15%),1级者2只眼(3%)。结论LASEK治疗LASIK术后残留近视及散光的预测性好,疗效确定,安全可靠。(中华眼科杂志,2005,41:981-985)

关键词：角膜磨镶术,激光原位角膜切削术,上皮下,激光近视散光