Existence of An Infinitely Sequence of Independent Random Variables

由给出的n(n∈Z+,n≥2)个分布函数,首先在可测空间(Rn,Rn)上构造概率测度Pn,接着构造n个随机变量,使之在概率空间(Rn,Rn,Pn)上是独立的,最后由科尔莫戈罗夫扩张定理得到在无穷维乘积空间(R)N,RN,μ(N={1,2,?})上无穷个独立的随机变量.We construct probability measure with given n(n ∈ ?+,n ≥ 2) distribution functions, on the measurable space(Rn,?n), then construct n random variables on the probability space(Rn,?n,Pn), which are independent, and finally get an infinitely sequence of independent random variables on the infinite product space(R)N,?N,μby the Kolmogorov's extension theorem

产业链、产业聚集与区域经济发展—对厦门产业发展问题的思考

本文阐述产业的相关性、产业链的形成以及产业聚集效应对区域经济发展的影响，旨在探索厦门发展海湾型城市的产业发展策略。通过分析厦门的产业发展现状、存在问题及主要原因和国家政策对厦门产业发展的影响,以及产业发展对城市经济发展的影响,提出现阶段厦门产业发展需要解决的一个重要问题是如何延伸发展产业链，形成产业聚集,壮大产业群，形成规模经济,以第二产业的发展带动第三产业的发展，这是增大厦门经济总量，增强厦门经济的集聚及辐射能力,成为东南沿海重要中心城市的必要途径。 本文的结构是： 引言：从产业配套能力对外资的吸引作用引出发展产业配套能力必须发展产业链。 第一章：从理论上对产业的相关性、产业链的形成与...学位：经济学硕士院系专业：经济学院经济研究所_产业经济学学号：20001600

Study and Application of Data Processing Techniques for SERS Spectrum

拉曼光谱特征峰的位置、强度和峰宽度可以提供分子震动、转动等信息，且检测方法具有不受水分子干扰、设备轻便、所需样品量少且无需预处理等特点，因此，拉曼光谱技术已发展为一种强有力的快速检测工具。表面增强拉曼光谱(surface-enhancedRamanspectroscopy,SERS)技术采用经特殊处理的表面粗糙金属(如金、银、铜等)作为活性基底，使得拉曼散射信号提高倍，在食品安全、环境监测、表面科学、材料分析、生物、医学等领域的痕量快速检测方面显示出巨大的潜力。然而，由于增强效应的稳定性、复杂体系中共存物特征峰的干扰等因素的影响，SERS谱图自动识别存在很大的挑战。本文就表面增强拉曼光谱信息处...Raman spectroscopy (RS), a technique with advantages of label-free, non-invasive, high molecular selective and insensitive to water, is capable of providing molecular fingerprint information of biological systems with high spatial and temporal resolution. RS has become a powerful potential method in fast detection. The Raman intensity can be increased by with the substrates of roughened metal (g...学位：工学硕士院系专业：物理与机电工程学院_测试计量技术及仪器学号：1992011115274

运输结构调整政策的国际比较及启示

在保证经济社会正常发展的前提下,抑制运输业碳排放的过度增长已经成为保证环境可持续发展的关键问题。国际经验和教训表明,运输结构调整政策是降低运输业碳排放和改善运输业发展所带来的环境问题的重要手段。通过对欧盟,以及法国、美国、日本运输结构调整政策进行国际比较分析,分析其实施运输结构调整政策进行碳减排的经验。在此基础上,提出我国运输结构调整政策启示,即:加强铁路市场化经营,构筑公平竞争的市场环境,发展以铁路为骨干的多式联运。中国国际工程咨询公司咨询项目(B15JB00230

海峡两岸会计合作交流、准则趋同与等效互认:机遇与挑战——第三届海峡论坛之两岸会计论坛观点综述

在第三届海峡论坛召开之际,财政部和厦门市政府于2011年6月12日至13日在厦门国际会议中心隆重联合主办“首届海峡两岸会计论坛“。论坛开幕式由财政部会计司司长杨敏主持,财政部副部长王军发表重要讲话。两岸会计界的专家学者围绕“加强两岸会计准则趋同研究,促进

Empirical Discrimination of the Survival Prospect of Start-up High Technology Firms

如何判别初创科技型企业未来的生存前景是各种投资机构和理论界都极为关注的问题。运用非条件Logistic回归模型,对厦门留学人员创业园内初创企业的生存状态进行了经验判别。在12个影响因素中,发现有3个因素与初创企业的生存状况密切相关。其中,既有的销路和明确的目标市场是促进初创企业成活率提高的因素,而产品适用范围的扩大反而会降低初创企业的生存概率。How to discriminate the survival and development prospect of start-up hi-tech firms is an issue highly concerned by both venture capital institutions and theoretical circles.The research paper uses non-conditional logistic regression model to make empirical discrimination about the survival and development status of start-up hi-tech enterprises registered in Xiamen Pioneering Park for Overseas Chinese Scholars.It is found that among the 12 factors of empirical discrimination,there are three key factors that are closely related to the survival status of start-up businesses.Ready-to-use Marketing and sales channels and clearly defined target market can effectively increase the survival ratio of start-ups,whereas the extension of the product's application scope can also decrease the survival probability of them.国家软科学研究计划项目“科技企业孵化器发展模式及运行机制研究”的阶段成果之一,项目编号:2004DGQ1D11

Calcium Distribution in the Stigma and Germinating Pollen of Lycium barbarum

用焦锑酸钾沉淀法对宁夏枸杞柱头和花粉中的钙离子分布进行了研究.结果显示,宁夏枸杞柱头表皮有一覆盖层,其中有许多含钙沉淀颗粒的小泡,当花粉落到柱头后从覆盖层中吸水,在萌发孔的表面上聚集了较多的钙沉淀颗粒.同时,花粉内部出现许多含钙的小液泡,使花粉体积增大,内部产生膨压,花粉萌发;生长在覆盖层中的花粉管顶端穿过覆盖层小泡时,附近聚集了较多的钙沉淀颗粒,在花粉管壁上也附着较多的细小钙沉淀颗粒.萌发的花粉粒中由大液泡占据,在其亚顶端的细胞质中,聚集较多钙沉淀颗粒的线粒体膨大形成了一些含钙沉淀颗粒的小液泡,由这些小液泡融合形成的大液泡,将花粉管细胞质挤到其顶端,使其极性生长.这是首次发现在植物柱头覆盖层中有钙离子的现象,从体内证明了钙离子在花粉萌发过程中的现象.讨论了枸杞柱头组织中钙的分布和花粉管的萌发与生长的关系.The stigma of Lycium barbarum is wet type and some material to be secreted to the surface of stigma to form a layer of tectum at anthesis.There were many vesicles in the tectum and numerous calcium precipitated grana were accumulated in the tectum vesicles.When pollen grains landed onto the stigma they began to hydrate and form many small vacuoles in which some calcium precipitated grana located,which made a swelling pressure in pollen.During pollen germinating in the tectum,the pollen tubes often traversed tectum vesicles and displayed many calcium precipitated grana on the tube wall,suggesting it to absorb calcium of the tectum vesicles.In the base of pollen tube some mitochondria with calcium precipitated grana swelled to form small vacuoles which fused to form a large vacuole.The pollen tube cytoplasm was pushed into the top of tube to make sure directional growth.This is first time to report that stigma tectum containing rich calcium in flowering plants.The calcium distribution in the stigma and pollen germination and tube growth were also discussed.国家自然科学基金项目(30670126

Screening, Identifying of Cellulose-Decomposing Strain L-06 and Its Enzyme-Producing Conditions

从用于堆肥的水稻秸秆中初筛出一株高效纤维素降解菌L-06,根据18SrRNA基因序列和菌株形态分析,初步鉴定该菌为斜卧青霉(Penicillium decumbens)。研究了液体发酵培养基中氮源、碳源、表面活性剂、培养温度、起始pH以及接种量对该菌株各纤维素酶活力的影响。在最适条件下,该菌的β-葡萄糖苷酶(BGL)、外切纤维素酶(CBH)于培养第3天酶活力分别达到1662u/mL和2770u/mL;内切纤维素酶(EG)、滤纸糖化力(FPase)于培养第4天酶活力分别达到18064u/mL和4035u/mL。在产酶优化实验中,该菌的EG和CBH在pH10的培养条件下分别保持了70%和43%的酶活性;在50oC培养条件下EG和CBH分别保持了68%和59%的酶活性。表现出了耐热,耐碱的特性。Cellulases are relatively costly enzymes that are sold in large volumes for use in different industrial applications, and a significant reduction in cost will be important for their commercial use in biorefineries. The production of cellulase is a major factor in the hydrolysis of cellulosic materials. Hence it is essential to make the process economically viable. A strain (L-06) with high cellulase activity was screened from rice straw compost and classified as Penicillium decumbens by the analysis of its morphology and 18S rRNA gene sequences. Different conditions of liquid fermentation medium including nitrogen source, carbon source, surfactant, temperature, initial pH, inoculation quantity for the production of cellulase had been studied. The maximal β-1, 4-glucosidase(BGL) activity was 1662 u/mL which is 1.49 times of the previous and the maximal exo-β-1, 4-glucanases(CBH) activity was 2770 u/mL which is 1.36 times of the previous, cultured in the optimal condition for three days. And the maximal endo-β-1, 4-glucanases (EG) activity was 18064 u/mL which is 1.87 times of the previous and the maximal filter paper enzyme(FPase) activity was 4035 u/mL which is 1.47 times of the previous , cultured in the optimal condition for four days. In the optimization experiments, the EG and CBH in the culture condition (pH10) maintained 70% and 43% activity. In the culture condition(50oC) EG and CBH maintained 59% and 68% activity, which showed heat and alkali resistant characteristics.国家高技术研究与发展项目(No.2006AA05Z111);; 广东省自然科学基金(No.06300998);; 福建省科技平台项目(No.2006H0091)资助~

药品零差价政策对公立医院财务运行的影响及对策

本文对厦门市公立医院2012(医改前)~2015年经济运行各项指标的变化以及药品零差价销售损失的补偿情况进行分析与探讨。结果显示:改革后公立医院收入结构逐步趋向合理且稳步增长,药占比控制初见成效,患者均次药品费用下降明显;但仍存在收入结构有待进一步优化,价格补偿不到位且财政补助欠灵活等问题需要完善。厦门市社科学会2016年十个重点调研课题专项基金项

天然淡水冰单轴压缩强度及其温度和应变率效应

本文报道了在不同温度和不同应变率下天然淡水冰单轴压缩强度的实验结果。指出S—l型柱状晶粒冰的压缩强度随着温度的降低而增加,极限压缩强度在应变率为10~(-4)S(-1)时有一个最大值。本实验的应变率范围是10~(-5)—10~0s~(-1)。10~(-1)—10~0s~(-1)的应变率范围是在冲击速度lm/s左右的实验条件下获得的,这个速度接近于浮冰与海上结构物相撞的情况。以本实验为基础,有希望发展对海冰的实验技术