ActiveX技术在海洋声信号处理中的应用

在Visual Basic6．0中应用ActiveX技术与Matlab混合编程，来处理海洋水声信号及海洋环境噪声实测数据，能够发挥各自的软件优势，既实现软件运行的无缝联接，又能大大简化繁琐的数据计算。     

编绘软件网络化的WinSock方法

探讨了windows编程环境下，编绘软件的网络实现方法。通过对WinSock编程方法的讨论，表明了编绘软件电子图板实现网络化编辑的可行性。     

VC、VB与FORTRAN的混合编程技术及其实现

在探讨高级编程语言之间混合编程技术的基础上,通过实例在Visual C 6．0、Visual Basic 6．0和Fortran Power Station4．0开发平台上演示了VC、VB和FORTRAN之间动态连接库(DLL)模式混合编程的实际应用,为使用不同开发平台的程序员和涉及知识产权保护的单位之间协作开发高质量的软件提供了技术途径。     

基于MapObjects组件的海岸带地理信息系统开发最佳技术

本文采用组件式 GIS软件 Map Objects2 .1和编程工具 Visual Basic6 .0对海岸带地理信息系统的开发思路、对象类型、系统结构和主要功能等做出讨论 ,并对海岸带地区的矢量与栅格数据在 Map Objects2 .1中的配准以及编程方法等进行分析。结果表明 ,Map Objects2 .1由于其灵活、高效、独立性强、兼容性强等特点可以有效管理海岸带数据 ,为海岸带管理提供有力的支撑     

一种新型海洋环境监测系统的静力分析和姿态计算

介绍了将浮标与潜标相结合的一种新型海洋环境监测系统的静力分析和姿态计算方法,结合MAT-LAB编程给出了在0～2 m/s流速范围内主浮标、主潜标和缆绳的受力、倾角情况,为确保系统能在水下长期可靠地工作提供了理论依据.     

空间目标轨道预报及望远镜观测实现

分析了空间目标两行轨道根数（TLE）的格式及构成;阐述了相应的SGP4／SDP4轨道近似解析模型算法;提供了轨道坐标系与J2000．0坐标系及观测地平坐标系之间的转换关系。研究了ASCOM控件的用法,并结合TLE数据计算结果编程实现了用Meade望远镜对空间目标的自动搜索与跟踪观测。     

海域使用管理信息系统的建立

通过分析海域使用管理信息系统的需求与现状，提出了建立海域管理信息系统的方案。根据数据量和共享需求，可建立两种海域管理系统：基于单机的系统和基于网络的系统。对两种系统进行了比较，利用GIS、关系型数据库和编程工具实现了该方案。     

VC++与Matlab混合编程的图像处理

主要讨论了VC 与M atlab混合编程的两种常规方式,给出了利用M atlab数学函数库混合编程的实现方法,指出了常规方式存在不足的同时,提出了另外两种方法,实现了利用M atlab数学函数库和编译器结合VC 混合编程的新方法,充分发挥了VC 有效运算速率与M atlab强大矩阵运算的优点。实验结果说明本文所提方案可行,适用于图像处理。     

一种海洋环境数据存储模型设计与应用

海洋环境数据种类繁多且数量巨大,多数以文档数据集形式存在,这使得海洋环境大规模数据的存储和访问变得困难。针对当前海洋环境大数据存储方法不足和编程访问的局限性,提出了一种面向应用编程的数据存储访问模型。该模型将文件数据模型结构信息映射到虚拟数据库中,提供基于SQL语法的访问接口,降低数据访问复杂度,提高软件编程效率。     

基于ArcObjects的地形三维可视化分析系统的研制

利用ESRI公司的ArcObjects组件工具和可视化开发语言的集成二次开发方式，开发出了基于ArcObjects的地形三维可视化分析系统。既充分利用了ArcGIS专业工具软件强大的空间数据库管理功能和三维空间分析功能，又利用其他可视化开发语言具有的高效、方便等编程特点，大大提高了应用系统的开发效率和技术水平。     

CFD approach to roll damping of ship with bilge keel with experimental validation

The most common method of reducing roll motion of ship-shaped floating systems is the use of bilge keel which act as damping elements. The estimation of the damping introduced by bilge keel is still largely based on empirical methods. The present work adopts the CFD approach to the estimation of roll damping, both without and with bilge keel and validates the results with experiments conducted in a wave flume. Specifically, free oscillation tests are conducted at model scale to obtain roll damping, both by experiments and CFD simulation and reasonably good comparisons are obtained. The experiments also include PIV study of the flow field and attempt has been made to correlate the measured flow field with that obtained by CFD. The CFD methodology has the potential to determine rationally the size and orientation of bilge keels in design with reasonably accurate estimate of the additional roll damping that it provides to ship's roll motion.     

Hydroelastic analysis of floating structures with liquid tanks and comparison with experimental tests

In this study, we develop a numerical method for a 3D linear hydroelastic analysis of floating structures with liquid tanks subjected to surface regular water waves and compare the numerical results with experimental tests. Considering direct couplings among structural motion, sloshing, and water waves, a mathematical formulation and a numerical method extended from a recent work [1] are developed. The finite element method is employed for the floating structure and internal fluid in tanks, and the boundary element method is used for the external fluid. The resulting formulation completely incorporates all the interaction terms including hydrostatic stiffness and the irregular frequency effect is removed by introducing the extended boundary integral equations. Through various numerical tests, we verify the proposed numerical method. We also performed 3D hydroelastic experimental tests of a floating production unit (FPU) model in an ocean basin. The measured dynamic motions are compared with the numerical results obtained using the proposed method.     

Interaction of waves with non-colinear currents

The present paper reports on a study of the interaction of a current-free monochromatic surface wave field with a wave-free uniform current field in a three-dimensional flow frame. The wave and the current fields are not necessarily collinear with each other. The formulation of the wave-current field is done under the assumption of irrotational and inviscid flow. We have developed the three dimensional expressions describing the characteristics of the combined flow in terms of mass, momentum and energy transport conservation. These equations are found efficient to describe the sought-for combined wave-current field. The parameters describing the wave-current field after the interaction are the surface disturbance amplitude and length, mean water depth, mean current-like parameter and direction of the combined flow, which would be calculated from a set of equations that satisfy conservation of mean mass, momentum and energy flux and a dispersion relation on the free surface before and after the interaction. The results are shown in terms of relative changes in wave heights and lengths, current-like parameters and final directions obtained for the combined wave-current field with respect to current-free wave and wave-free current pre-interaction parameters.     

斜向波与带填料开孔板式防波堤相互作用的研究

基于线性势流理论,对斜向波与消浪室内带部分填料的开孔板式防波堤结构的相互作用进行了理论研究.利用匹配特征函数展开法给出了开孔防波堤结构反射系数和波浪力系数的理论计算方法,在极限情况下的计算结果与已有结果一致.利用数值算例分析了开孔结构反射系数和波浪力系数的主要影响因素.增加消浪室内填料厚度通常可以降低开孔墙结构的波浪力系数,加大结构的反射系数.随着波浪入射角度的增加,带填料防波堤结构的反射系数值先减小,达到最小值后又单调增加.     

肺复方联合顺铂对气阴两虚Lewis肺癌荷瘤小鼠的影响

目的：研究气阴两虚Lewis肺癌荷瘤模型小鼠的行为学特征、饮水量、摄食量、体质量及肺复方对上述指标及脏器指数的影响。方法：取C57BL/6J小鼠40只,将其随机分为空白组8只、造模组32只。造模组灌服热性中药水煎液合并烟熏制备气阴两虚模型（造模第一阶段,共14 d）,于第15天移植Lewis肺癌细胞（造模第二阶段,共14 d）,按性别、体质量分层随机分为模型组、顺铂组、肺复方组及顺铂+肺复方组（联用组）,连续进行药物干预14 d。以造模每阶段及药物干预第1天的体质量、饮水量和摄食量分别作为基础体质量、基础饮水量和基础摄食量。并于固定时间,每2 d记录动物饮水量和摄食量,每3 d记录动物体质量,药物干预结束后处理动物,测量、计算其去瘤体质量和肝、脾及胸腺的脏器指数。结果：造模第一阶段小鼠饮水量和摄食量减少,造模第二阶段小鼠体质量增加,气阴两虚Lewis肺癌荷瘤模型小鼠脾脏和肝脏指数升高,胸腺指数降低（P<0.05或P<0.01）。药物干预后各组小鼠活动量增加,肺复方组饮水量、体质量增加,顺铂组小鼠摄食量、体质量减少,脾脏指数、去瘤体质量降低,联用组小鼠饮水量增加、摄食量减少,脾脏、胸腺指数升高（P<0.05或P<0.01）。结论：气阴两虚Lewis肺癌荷瘤模型小鼠的饮水量和摄食量减少,体质量增加;肺复方可缓解模型动物口干少饮、形体羸瘦等症状,改善顺铂引起的不良反应,增加模型小鼠脾脏和胸腺指数;肺复方干预肺癌的作用机制可能与其增强机体免疫功能有关。     

使用MATLAB绘制常用海洋要素图件

利用MATLAB软件强大的图形制作功能,结合海洋水文资料的特点,介绍了海洋水文资料的检查、处理、分析及应用中常用图形的快捷绘制方法。     

Comparisons between the characteristics of ichthyofaunas in nearshore waters of five estuaries with varying degrees of connectivity with the ocean

The characteristics of the fish faunas in nearshore, shallow (<1.2 m) waters of the basins of estuaries along the same coastline, but which were open to the ocean for varying periods, have been determined and compared. The fish faunas of the permanently-open Oyster Harbour, the seasonally-open Broke, Irwin and Wilson inlets and the normally-closed Wellstead Estuary on the south coast of Western Australia were sampled by seine net seasonally for 2 years. Irrespective of the frequency and duration that the estuary mouth was open, the ichthyofauna of each estuary was numerically dominated by three atherinid species and three gobiid species (92.9–99.7%), each of which completes its life cycle within these estuaries. The ichthyofaunal compositions of each estuary differed significantly, however, from that of each other estuary. These differences were largely attributable to the relative abundances of the above six species varying between estuaries, which, in turn, reflected differences in such factors as estuary mouth status, macrophyte cover and salinity. For example, Favonigobius lateralis and Leptatherina presbyteroides, which are also represented by marine populations, were most abundant in the permanently-open estuary (Oyster Harbour), which, in terms of substrate and salinity, most closely resembled the nearshore marine environment. In contrast, Leptatherina wallacei made its greatest contribution in the only estuary to exhibit a protracted period of greatly reduced salinities, which is consistent with its distribution in permanently-open estuaries on the lower west coast of Australia, while Atherinosoma elongata and Pseudogobius olorum were particularly numerous in estuaries containing dense stands of the seagrass Ruppia megacarpa. Marine species made the greatest contribution to species richness in the permanently-open estuary and least in the normally-closed estuary. Species richness was greatest in summer and least in winter in each estuary, but differed markedly between years only in Wilson Inlet. Density of fishes was greatest in the most eutrophic estuary (Wellstead Estuary) and least in the most oligotrophic estuary (Broke Inlet) and only underwent marked seasonal variations in Wilson Inlet and Wellstead Estuary, in which densities fell to their minima in winter. Ichthyofaunal composition varied between years in the Broke and Wilson inlets and Wellstead Estuary, in which there was little or no connection with the ocean in one of those years. Species composition underwent progressive seasonal changes throughout the year in Wellstead Estuary, due to the abundance of certain species peaking at different times of the year.     

Interactions of cnoidal waves with cylinder arrays

The three-dimensional scattering of cnoidal waves by cylinder arrays are studied numerically by using the generalized Boussinesq equations. The boundary-fitted coordinate transformation and a dual-grid technique are used to simplify the finite-difference computation. Also, a set of open boundary conditions and an incident cnoidal wave are incorporated for time-domain simulation. The free-surface elevation and hydrodynamic forces on each cylinder are calculated to illustrate the evolution of nonlinear waves and their interactions with large cylinder arrays. Comparisons are made between the present nonlinear wave loads and those obtained from linear diffraction theory. The sheltering role played by the neighboring cylinders and the feature of wave interference are discussed.     

基于Kriging算法实现等高线制式转换

地图上等高线的等高距主要有英美制（英尺、码）和公制（米）两种制式,不同制式间的等高线转换,其实质是等高线重构。克里金（Kriging）算法是对空间分布的离散数据进行无偏、线性最优内插估计的一种较理想的插值方法。论述了Kriging算法的基本原理,并以VB＋Surfer为二次开发环境,实现了等高线制式由码至米的转换,分析了该方法应用的主要特点。     

黑潮的涡分辨率数值模拟

本文利用涡分辨率的HYCOM模式,以NCEP月平均再分析资料(1979—1993)为驱动场,并采用单向数值嵌套的方式对黑潮流域进行数值模拟,成功模拟了黑潮流域的高分辨率流场特征。模拟结果显示:黑潮路径符合前人对黑潮的认识;在地形和流量的共同作用下,黑潮对吕宋海峡的入侵呈现多平衡态的特征;日本以南的黑潮路径发生多种时间尺度的摆动(从季节内到年际)。黑潮在PN断面上流速跟同期观测十分相符,流轴集中在陆架破折处,季节变化较弱。台湾岛以东黑潮,东海黑潮以及吐噶喇海峡黑潮的流量符合对应时期观测,并且各自呈现出不同的变化特点。