海洋生物医药产业集聚“新”模式:一个理论模型及应用

海洋生物医药产业集聚是促进该产业发展的重要举措。文章梳理了海洋生物医药产业集聚发展相关文献,在分析海洋生物医药产业集聚因素构成的基础上,指出该产业集聚的特征,构建了海洋生物医药产业集聚理论模型,并以广东省海洋生物医药产业为例,分析了该产业集聚的“新”模式,在理论模型作用下,广东省海洋生物医药产业集聚遵循以丰富的海洋生物资源为基础、以各高校、科研院所为依托、以国家针对性政策和相关制度为推动力、以优越的地理位置为重要条件、紧紧抓住发展机遇。     

地形图数字化测绘成果质量检查与评定的实施

本文主要介绍了测绘生产单位对地形图数字化测绘成果最终质量检查与评定的实现方法。笔者通过生产检查实践,对地形图数字化测绘成果样本检查与内业数据检查的实施、检查项的选取、检查方法的选择和图幅扣分值调整系数的确定进行了探讨,供生产部门实施最终检查时参考。     

基于南黄海海相油气勘探的地震采集技术研究

南黄海盆地中部隆起区前第三系油气储层主要为中一古生代海相碳酸盐岩地层,厚度大、分布广,具有良好的油气前景.由于厚度小于1000 m的新近系低速地层直接覆盖在高速碳酸盐岩地层之上,对地震波的向下传播起到了强烈的屏蔽作用,使之深部目的层地震资料品质差,影响了油气勘探的进程.根据区域地质、地球物理特征,进行了基于AV0(Am...     

我国个人所得税制度完善的法律思考

个人所得税是与每个人联系都很紧密的税种．它的完善与否，直接体现了我国法制建设的完善程度及居民素质的高低。但现行税制由于内外原因，存在各种缺陷。因此有必要在理论中找到对策，并在实践中寻求答案逐步完善个人所得税制度。     

乡村振兴视角下地质文化村建设的理论框架构建与实践模式

地质文化村建设是积极响应“乡村振兴”等国家战略的地质实践,其理论体系构建与实践模式探索具有重要意义。本文基于乡村振兴视角,以“生态振兴”、“文化振兴”、“产业振兴”、“人才振兴”和“组织振兴”五个方面为总纲,以“两山理论”、“乡村治理理论”等为指导,提出地质文化村建设应以“地质保护优先”+“科学合理利用”为核心宗旨,以“讲好地质故事”+“传承乡村文化”为发展动力,以“产业体系构建”+“村民增收致富”为重点内容,以“人才队伍建设”+“共建共享共赢”为建设方式,以“地质价值认同”+“基层组织建设”为根本保证,形成地质文化村的理论框架体系。在实践模式方面,体现了“三生一体”、“近景、近园”、“多元融合发展”、“村支两委+村民”主导等模式。在未来发展中,应大力开展全国创建试点,加大地质文化村理论研究的广度和深度,构建服务地方工作机制。     

基于谱学的成像光谱遥感技术发展与应用

成像光谱遥感技术是80年代初发展起来的新型遥感技术。近20年来,该技术发展很快,已成为遥感技术发展的3大趋势之一(成像光谱遥感,微波遥感及3S技术系统)。由于成像光谱具有高光谱分辨率的图像与光谱合二为一的特点,它的发展不仅使遥感技术能有效地直接识别地表物质,而且还能更深入地研究地表物质的成分及结构。本文综述成像光谱遥感技术的发展,理论基础,方法技术及其应用。     

重力固体潮理论值导数的封闭公式

本文基于计算重力固体潮理论值的天顶距法，通过严格的理论推导，给出了计算重力固体潮理论值的导数的封闭公式．     

Practical applicability of high frequency correction theories to CO<Subscript>2</Subscript> flux measured by a closed-path system

The theoretical correction of CO₂ fluxes for high frequency attenuation in closed-path systems was re-summarized and its applicability examined using both measurements obtained at an Asiaflux forest site and empirical transfer functions used in previous studies. For our measurement system, the theoretical transfer function was applicable to high frequency correction, even when condensation occurred in the sampling line. Further, in respect to some measurement systems described in previous studies, it was found that the theoretical function was potentially applicable along with the empirical functions used. Meanwhile, in some systems significant errors could not be resolved by re-estimation of the theories. In these systems, because of undefined buffering effects, the actual response lag time decided by the maximum covariance method or by measurement of the system response time using tracer gas was significantly different from the lag time calculated from the tube dimensions and the measured flow rate. If the average flow rate calculated by the actual lag time was used to determine the theoretical function, the theoretical function became closer to, and sometimes agreed with, the empirical function. Any remaining deviation from each function might be associated with pressure fluctuations, but this problem was unable to be examined here. The results suggested that an empirical formulation for each site is considered applicable rather than a theoretical approach, although the theories are being developed to practical application.     

Wave trapping and flow around an irregular near circular island in a stratified sea

Wave trapping and induced flow around an island is examined. The exactly circular island solutions are reprised and the solutions extended, and shown to apply to a stratified sea. The homogeneous solutions are then used to deduce the wave trapping and flow around a near circular island. It turns out that the cotidal pattern for a perfectly circular island is relatively immune to variations in geometry and radially dependent depth variations. This helps explain the similarity in the behaviour of the tides around various islands (the Pribilof Islands near Alaska, Oahu in Hawaii, Cook Island off north west Australia, Bermuda off the eastern coast of the USA, and Bear Island in the Norwegian Sea). The dominant steady drift and its rate of decay off-shore is also calculated.     

物理场多重分形谱理论模型的数值模拟研究

利用二维双标度三分非空集对物理场多重分形谱进行了理论模型的数值模拟研究。模拟结果表明：随着物理量空间分布不均匀性的增大，不同模型参数下的理论分形谱曲线变陡，Dq值域范围变宽。利用多重分形谱曲线的形态特征，可进一步了解是“稀疏区”还是“密集区”起主导作用，这对于从理论上把握物理和化学场分布特性具有重要意义。