基于COM组件的农业灌溉优化决策软件的开发

利用对象模型生成器将优化灌溉模型、作物需水量及灌水量模型做成组件,然后利用知识工程对生成的组件进行有机集成,应用面向对象的高级语言把各组件进行有机融合,编制一套作物灌水量长期、短期优化分配的可视化软件,把有限水资源在不同作物以及作物的不同生育阶段进行合理的分配。     

MATLAB和VB在温室环境模型构建中的混合编程研究

旨在找到一种MATLAB和VB混合编程的方法,实现日光温室热环境模拟模型软件的可视化编写。采用基于组件对象模型COM（component object module）的方法,研究了MATLAB和VB在模型构建中的混合编程。采用MATLAB软件编写M.源函数文件,实现理论模型中的工程计算和图像图形处理功能,M.源函数文件编译成功后,通过COM方法转换为可被独立调用的组件;采用VB软件编写主程序文件,实现良好的人机交互功能。在主程序中完成模型各项参数的赋值后,再调用COM组件进行理论模型的计算与绘图。COM组件方法可以实现MATLAB和VB的混合编程。以此构建的日光温室热环境模拟模型软件,可在主程序输入各项参数：室外气象条件,温室结构、热性能等,模拟室内热环境的变化。     

Predicting the spatio‐temporal distributions of pelagic sharks in the western and central North Pacific

Spatio‐temporal modeling estimates a species distribution function that represents variation in population density over space and time. Recent studies show that the approach may precisely identify spatial hotspots in species distribution, but have not addressed whether seasonal hotspots are identifiable using commonly available fishery data. In this study, we analyzed the seasonal spatio‐temporal distribution of pelagic sharks in the western and central North Pacific using fishery catch rates and a generalized linear mixed model with spatio‐temporal effects. Different spatial distribution patterns were observed between two shark species. The hotspots of shortfin mako (SFM) appeared in the vicinity of the coastal and offshore waters of Japan and the Kuroshio‐Oyashio transition zone (TZ), whereas the hotspots of blue shark (BSH) were widely distributed in the areas from the TZ to the waters of the Emperor Seamount Chain. Shortfin mako distribution changes seasonally with clear north‐south movement, which follows higher sea surface temperatures (SST). However, preferred spring and summer water temperature was still colder than those in fall and winter, but not as cold as for BSH, which did not show seasonal north‐south movement. BSH exhibits seasonal east‐west movement apparently unrelated to temperature. The spatial fishing effort by season generally follows the seasonal movement of temperature possibly making SFM more vulnerable to the fishery than BSH. These findings could be used to reduce the capture risk of bycatch sharks and to better manage the spatial distribution of fishing for targeted sharks.     

ArcGIS在林地年度变更调查成果与森林资源普查成果转换中的应用

为保证林地数据真实性、准确性和时效性,降低林地年度变更及森林图斑复位调查数据配发工作量,在2016年度林地变更调查成果和贵州省第四次森林资源普查成果基础上,利用ArcGIS建模技术和Python语言完成小班图形边界衔接、数据结构和代码之间的转换工作,实现了全省林地变更调查期初数据配发以及森林资源图斑复位调查数据配发,较常规数据处理方法效率有一定地提高,为其它数据之间的转换提供可借鉴的经验。     

基于B/S的ICAI课件开发平台的设计思想

介绍了基于B／S的ICAI课件开发平台的结构和特性。教师使用这一平台，可方便地在课件中嵌入文字、图形、声音、动画和视频等教学素材，由课作生成器生成具有独特教学策略的课件。学生使用浏览器在异地和本地上网点击任一所需内容，都可完成相应的测试和反馈。     

氨基酸——金属螯合物添加剂对虹鳟幼鱼生长的影响

本文研究了蛋氨酸—金属螯合物添加剂对虹鳟幼鱼生长的影响。结果表明,该添加剂组增重比基础饵料组和市售无机盐组略高,饵料系数比其它两组略低。经t测验检验,三组之间的差异不显著,还需要对杂食性或植食性鱼类进一步的实验。