328 research outputs found
Implementation of Graphical Pulse Sequence Design Using Eclipse Graphical Modeling Framework
采用Eclipse图形建模框架(Graphical Modeling; Framework,GMF)技术构建了一个图形化磁共振脉冲序列设计软件.软件具备所见即所得的特点,用户使用拖放方式所画出的脉冲序列与教科书和参考; 文献上的脉冲序列几乎一样.软件支持核磁共振(Nuclear Magnetic Resonance, NMR)波谱和磁共振成像(Magnetic; Resonance Imaging,; MRI)的脉冲序列设计,同时提供实验参数管理模块,实现脉冲序列基础上的NMR实验设计和执行预览.得益于GMF完善的模型-视图-控制器模式和强大的; 代码生成能力,软件开发周期大幅度缩短、扩展能力大幅度提高.This paper describes a new nuclear magnetic resonance (NMR) and magnetic; resonance imaging (MRI) graphical pulse sequence design software; utilizing Eclipse graphical modeling framework (GMF) technology. The; software has a what-you-see-is-what-you-get trait for users. Pulse; sequences drawing can simply be achieved by dragging and dropping the; elements, and the results look almost the same as those shown on the; textbooks and literatures. An experiment parameter management module is; also provided to make previews of NMR experiment design and execution; available. Due to the excellent model-view-controller pattern and strong; ability of code generation of the GMF, the software has significantly; improved expansion capacity, and the software development cycle was; shortened greatly.国家自然科学基金资助项
Study on the Role of Government for the Financing of SMEs in China
改革开放三十多年来,中国的市场经济体制已经初步建立起来,经济规模和总量大幅增长,其中中小企业的迅速成长有力地促进了我国经济的快速发展。现阶段,国家制定了转变经济增长方式、调整经济结构的经济发展策略,为中小企业的发展提供了政策土壤。这些年,中小企业无论在数量上还是质量上都实现了跨越式的发展,对我国经济社会的发展起到了极大的推动作用,尤其是在缓解就业压力、实现出口增长、加快科技创新等方面都起到不可替代的作用,成为我国经济发展的重要推动力。然而我国中小企业在快速发展的同时也面临着许多问题和困难,尤其是融资难的问题始终困扰着中小企业主们,使中小企业面临着比大企业更艰难的生存环境。渣打银行和中国社科院对...Since over 30 year’s reform and opening up, the system of market economy has been initially established in china, with economics scale and aggregate growing rapidly. Especially the rapid growths of the small and medium sized enterprises (SMEs) promote economic development of China greatly. Recently, the state developed a strategy of economic development about transformation of the mode of economic...学位:工商管理硕士院系专业:管理学院高级经理教育中心(EMBA项目)_高级管理人员工商管理硕士(EMBA)学号:X200615601
Harmonization of Preferential Rules of Origin within the WTO Regime
随着区域贸易协定的迅猛发展及其对多边贸易体制所带来的冲击,作为决定其能否顺利实现的关键要素之一,优惠性原产地规则引起了日益广泛的重视。生产的日益全球化使得决定一项产品的原产地变得不再那么容易与客观,加之相关有约束力的多边规则的缺位,使得优惠性原产地规则被注入很多其他方面政策考虑,并逐渐从一种中性的技术工具演化为隐蔽的非关税贸易壁垒。国际社会日益意识到复杂、混乱、限制性的优惠性原产地规则给自由贸易所带来的负面影响以及对之进行多边协调的必要性,并进行了一定的探索,然而所取得的实效不尽让人满意。有鉴于此,笔者在系统回顾既有文献的基础上,通过深入分析优惠性原产地规则的负面效应及其在区域与多边层面的协调...As one of the key elements affecting the effective application of a regional trade agreement, Preferential RoO is attracting more and more attention, as the proliferation of regional trade agreements and its huge impact on multilateral trade regime. Since the globalization of production make it not easy to determine the origin of a product anymore and the lack of binding multilateral rules, many o...学位:法学硕士院系专业:法学院法律系_国际法学(含国际公法、国际私法、国际经济法)学号:1292006115050
Microbial diversity and its roles in methane cycles in sediments from Jiulong River Estuary
九龙江位于福建的南部,是福建省第二大河,由北溪、西溪和南溪汇合而成,于厦门市海沧区南岸入海形成九龙江河口湾(简称九龙江口)。九龙江口水域位于陆海交汇处,沉积物中富含有机质,为微生物提供了充足的碳源。此次研究对九龙江口沉积物样品采用了分子生态学和地球化学元素分析的相结合的方法,探索沉积物中微生物群落与环境的相互关系,特别是采用提取沉积物RNA的方法,力图揭示在环境中真正参与甲烷循环过程的活性微生物。 对九龙江口沉积物各个深度的间隙水进行和甲烷和硫酸盐地球化学参数测定,在垂直剖面下存在以下特征:甲烷浓度梯度在硫酸盐还原带底部急剧增大,而间隙水硫酸盐浓度随深度呈线性降低。间隙水地球化学参数的变化特...Vertical sediments samples were collected in Jiulong River Estuary, located at Southern Fujian Province. In order to explore the relationships between microbial community and environments and get insight into microbes involved in methane cycles, we combined the molecular ecology methods and geochemical data analyses together. Especially, we extracted the total RNA of sediments, and constructed 16S...学位:理学硕士院系专业:生命科学学院生物学系_细胞生物学学号:2162007115187
Applications of intermolecular multiple-quantum coherence in high-resolution NMR spectra in inhomogeneous fields and function MRI of human olfaction
本工作报告由两部分组成:分子间多量子相干在液体NMR高分辨率谱中的应用及大脑嗅觉功能磁共振成像研究。分子间多量子相干(IntermolecularMultiple-QuantumCoherence,iMQC)作为核磁共振的一种新现象,其本质是远程偶极相互作用。iMQC在MRI上提供一种新的成像对比度机理,在NMR上消除磁场不均匀性获得高分辨率谱,引起NMR界的极大兴趣。本报告在我们先前的IDEALiMQC方法获得高分辨率一维NMR谱(ChenZ,ChenZWZhongJ.J.Am.Chem.Soc.2004,126:446-447)的基础上,提出了两种更有效的方法——IDEAL-II和IDEA...This report consists of two parts: high-resolution NMR spectra in inhomogeneous fields via intermolecular multiple-quantum coherence(iMQC) and function MRI of human olfaction. The iMQC, resulted from intermolecular dipole-dipole interaction, is a new phenomena in highly polarized nuclear spin systems and has attracted great interest in NMR research community. It provides new contrasts in MRI and...学位:博士后院系专业:物理与机电工程学院物理学系_物理学学号:BH1700011
Intermolecular Multiple-Quantum Coherences in Liquid NMR and Their Applications
1990年当简单的CRAZED脉冲序列作用于简单的高极化核自旋体系时,在一维实验时间域中发现了多自旋回波现象(MultipleSpinEcho,MSE),在二维实验频率域中发现了令人诧异的分子间多量子相干现象(IntermolecularMultipleQuantumCoherence,iMQC),这引起了核磁共振工作者极大的研究兴趣,同时也给核磁共振界带来争论。随着研究的深入,理论和实验均表明这两种现象的本质是一样的,都是由远程偶极相互作用引起的。本论文采用经典的偶极场和量子力学的密度矩阵理论方法,并利用脉冲梯度场与选择激发相结合的实验手段,对iMQC的性质和机理进行了系统的研究,还建立了利...Over the past decade or so, the multiple spin echo (MSE) or intermolecular multiple quantum coherence (iMQC) phenomena in highly polarized nuclear spin systems have seemed to contradict conventional NMR theory and drawn great attention in NMR research community. In the subsequent deliberate research, these experimental phenomena were referred to be resulted from intermolecular dipole-dipole intera...学位:理学博士院系专业:化学化工学院化学系_物理化学(含化学物理)学号:B20002503
我国普通高校高水平运动员职业期望研究与就业指导建议
运动员的就业问题一直是饱受热议的社会问题,运动员的职业期望则是研究运动员就业问题的基本点。笔者运用文献资料法、问卷调查法和数理统计法对我国普通高校360名在校高水平运动员的职业期望进行了调查研究。研究结果表明:1.我国普通高校在校高水平运动员最期望从事的职业为体育教师与教练;2.运动员的职业期望与性别、生源地和社会阶层背景不存在显著性差异,与运动等级和运动项目存在高度显著性差异。基于对运动员职业期望的研究,运动员的就业指导需要注重:(1)开设职业指导课程;(2)完善课程体系设置;(3)促进信息有效交流;(4)加大就业扶持力度。厦门大学中央高校基本科研业务费项目(T2013221039
Study on the Changes of Physical Health Status of Students from P.E.Teaching Reform
运用文献资料法、测试法、比较分析法、数理统计法等研究方法,以厦门大学三学期制为背景,以概括总结近8年来我校体育教学深化改革为出发点,对我校2005、2007、2009、2012年学生体质健康监测结果进行比较分析,以期了解我校学生体质健康水平的变化情况,为大学体育教学改革指明方向。结果表明:我校实行三学期制以来,体育教学改革不断深化,学生体质健康状况整体良好,不仅总体水平逐年提高,而且学生的身体形态、机能、素质均得到不同程度的改善;身体形态方面,我校学生肥胖率有所下降,但超重和营养不良的比例有所提高,其中女生变化幅度明显大于男生;身体机能方面,我校学生总体上处于良好以上,女生的整体水平好于男生。身体素质方面,我校学生上下肢力量处于“失衡“状态,这种现象应引起高度重视。The paper is using the method of literature,test method,comparative analysis,mathematical statistics and other research methods to analyze the students,physical health monitoring result of our school in the years of 2005,2007,2009 and2012,taking the three-semester system of Xiamen University as the background and summarizing the recent 8 years of the P.E.teaching reform as the starting point.This is to understand the change of physical health level of students of our school.It can become the direction of the university sports teaching reform.The results show that:our school deepens the reform of P.E.teaching after the three-semester system,students' physical health condition is good and improved in different degrees not only the overall level but also the body shape,function and quality;our students,obesity rate has declined in body shape,but the overweight and malnutrition has increased.The proportion of girls was significantly more than boys;our students,physical function is more than good and the girl's overall level is better than boy's;physical fitness,our students,upper and lower extremity strength is in the"imbalance"state.The phenomenon should cause height to take seriously.2011年福建省教育厅A类社会科学研究项目(JA11008S
MODIFICATION OF THE DEAD BODY SEGMENT PARAMETERS FROM LIVING SUBJECTS
活体测定人体环节参数至今仍是运动生物力学研究中的一个困难问题。该文描述了一种简单而易行的方法对人体环节参数进行个体修正 ,得到一套有效的环节重心比 ,以替代目前在运动技术分析中所使用的数据In the studying of biomechanics of sports, it is still a subtle problem to determine human body segment parameters from living subjects. We are trying to provide a simple and convenient method to modify the given segment mass center parameters for specific objects. The induced segment mass center proportions may be applied to take technical analysis for different sports activities
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