加强土地整理,推进新农村建设

建设社会主义新农村是党中央统筹城乡发展的战略决策,是我国现代化进程中的重大历史任务,也是解决"三农"问题的切入点。土地整理是社会经济发展到一定阶段解决土地利用问题的必然选择,是指在农村区域内,通过行政、经济、法律和技术等手段,对田、水、路、林、村等的综合整治,是新农村建设目标的重点,也是促进新农村建设的重要保障手段。在分析土地整理概念及其对社会主义新农村建设重要作用的基础上,提出了推进新农村建设中我国土地整理的着眼点。     

五轴数控加工叶片无干涉刀位轨迹的计算

根据微分几何特性，提出五坐标数控加工叶片时对叶片的工作面和背面的刀位轨迹计算分开予以讨论，对工作面而言，利用平头立铣刀加工时不存在干涉，而对背面而言，可能存在干涉。根据干涉的种类，分别对全局干涉和局部刀具干涉提出了快速判定依据，并对干涉点进行了修正。指出利用Iso-scallop法可获得最优的轨迹和蔗，并给出了实例。     

基于Petri网的产品拆卸过程规划

引用拆卸优先矩阵来描述产品零件间的物理特性,并以优先矩阵为基础,以Petri网为工具,建立了包括零部件回收价值及拆卸成本在内的产品拆卸Petri网模型,采用Petri网基于不变量的性能分析方法,对模型进行求解,得到了满足需求约束的最佳拆卸序列。     

The River Wadu role play — ten years experience

This paper describes a role playing planning exercise that has been used for training agriculturists, engineers and agricultural economists for more than ten years. It sets out the objectives and key features of the exercise and the experience that has been gained in its use. The exercise has been found to successfully test and integrate subject matter expertise acquired from formal teaching. It also highlights the multiple and often conflicting objectives of irrigation planning, and the need for full evaluation of alternatives and sound technical judgements under conditions of inadequate data and time pressure. The exercise is also successful in developing professional personal skills such as group working, interviewing and presentation, and is recommended as an effective training aid.     

喷灌工程规划设计多方案选优的语言化与定量化相结合模糊综合评判数学模型

本文提出了喷灌工程规划设计多方案选优的语言化与定量化相结合的模糊综合评判数学模型,从而可得到比传统喷灌工程规划设计方案选优方法更为合理、满意的结果。     

基于GIS技术的小型水库规划方法

在小流域治理中，为了提高水库规划的精确度和速度，提出了基于GIS技术来实现小型水库规划的方法。主要是基于GIS技术的库客曲线的制作方法；小型水库规划的可视化。在GIS中，真实地形在计算机中的表达用数字高程模型(DEM)表示，水库规划的三维可视化环境的实现需利用0penGL技术。     

降低车用柴油机排放的新技术

分析了柴油机排放及其危害,阐明了通过采用新结构和新技术可以有效控制柴油机的排放,为降低车用柴油机排放提供了可靠的理论依据。     

黑龙江省农业资源配置现状及调整方向

资源配置从来都处于调整之中，稳定不变的资源配置是没有的。黑龙江省资源相对丰度较高，农业资源环境较好，但资源配置仍存在着不容忽视的问题。形势发展要求应立足于黑龙江省特有的自然、经济以及社会条件，调整农业资源配置方向。     

Determining crop-water production functions using yield–irrigation gradient algorithms

Crop-water production functions (CWPFs) are a useful tool for irrigation planning, but derivation of CWPFs by field experimentation is expensive, and traditional analytical techniques are not well suited to derivation of CWPFs. Physiologically based crop models provide a useful tool for simulation of agricultural experiments, but they have not been extensively applied to the task of CWPF determination. A new algorithm type based upon differential crop yield response to irrigation (“yield–irrigation gradients” [YIG]) is presented that uses these crop models to determine planning-level irrigation schedules and CWPFs. Three specific algorithms are developed within this type, varying in complexity, performance, and computational costs. Performance of the YIG methods is compared against a standard reference evapotranspiration method. In particular, the randomized iterative YIG (RIYIG) algorithm provides near-optimal results but at the highest computational costs of all the methods specified. All of the techniques presented have general applicability and are not limited to any one crop or location.     

湖南省节水灌溉分区与规划

将模糊聚类方法用于湖南省节水灌溉分区，建立了湖南省节水灌溉区划模型，将系统动力学的动态仿真原理用于节水灌溉发展规划，建立了节水灌溉发展规划的动态仿真模型。据此，提出了湖南省节水灌溉区划，并对各分区及全省“九五”期间节水浇灌发展作了详细规划。