A Globally Convergent Algorithm for Nonlinear Programming

A new globally convergent algorithm was presented for a continuous differen-tiable nonlinear programming by defining a measure function deviating from the Kuhn-Tucker point. With this algorithm which can be used to get the optimum solution of the problem,the optimal lagrangian multiplier corresponding the optimal solution of the problem was also obtained. A new iterative algorithm for quadratic programming is obtained when applying the general algorithm to quadratic programming. Finally,a numerical example was given.     

Prediction of the Economic Development for the Circumjacent Reservoir Region of the Longtan Hydropower Project Using Grey Quantitative Analog

In order to overcome some technical difficulties,we adopt ingenously the grey models combined with the quantitative analog method,and select the Dan Jiangkou Project which has accumulated practical operation data for a long time as the analog project to predict the economic influence for the circumjacent reservoir region of the Longtan hydropower project.On the basis of analog we have built various industrial economic grey models,and compare them with the corresponding predictions for the unconstructed reservoir case.The predictions of the former are greatly larger than the later ones.and hence provides a certain scientific basis for the central leaders to make a decision for constructing the huge hydropower project ultimateiy.     

Region Study on Sciences of Human Settlements in China

By review of region study in recent development of history science, geography and Sciences of Human Settlements, this paper points out that material collecting without interrelated analyzing as well as focusing on main question and assumption without enough argumentation are main problems in this field now. The method renovation & combination with related subjects are discussed, this paper concludes that strengthen interdisciplinary study with Geography is a key issue in the future development of region study in Sciences of Human Settlements and possible approach to "technical development' and "humanity concern'.     

Optimum Planting System for Energy Saving and Healthy Demanded

It is proved that planting is effective to improve environment both indoor and outdoor resulted from the functions of plants to clean air and save energy. So the contradiction between saving energy and comfort,healthy demanded by people can be solved by planting. The planting have being emphasized and expanded during recent years,but in the planting plan,just the function of beautifying the environment is concerned and the function of ecological and saving energy are neglected. The analysis on the ooptimum system of planting is to make the planting system as an organic composition in the effectiveness structure and space layout of the city. Based on the study on equivalent relation of different effects on environment, the optimum system of planting structure will be determined in order to achieve the integrated effects of planting on environment.     

Around Body Flow Computation with Vortex-Flow-streamFunction in Boundary Fitted Coordinates

In this paper, partial differential equations of vortex flow-stream function in boundary fitted coordinates and related ADI equations were listed. The flow around a cylinder in quadrilateral area by auto control boundary was computed. The diagram of distribution of speed arrow, constant lines of flow-stream function, vortex, two speed parts and pressure were studied.     

TRUST REGION METHOD FOR UNCONSTRAINED OPTIMIZATION

A new trust region algorithm is proposed for solving unconstrained optimization problems. According to the quadratic approximate model of the original optimization problem,the trust region algorithm uses directions,a convex combination of the quasi-newton direction and the steepest descent direction. This algorithm with new strategy is analyzed and the global and local quadratic convergent theorems are proved. At last,the implementation and computational results of the algorithm are demonstrated.     

酿酒葡萄延迟栽培方式的研究

利用西昌地区丰富的光热资源，以3年生真芳德和梅尔诺为试材，2000年在西昌正大葡萄试验园进行了酿酒葡萄延迟栽培的研究。摘除一次花序，对新梢分别在花后20、40、60、80d进行中梢修剪，逼迫冬芽萌发结果。结果表明：真芳德具有较强的冬芽副梢结果能力。在延迟栽培条件下，两品种的果实成熟期可推迟到11月上中旬。单株产量、果实可溶性固形物含量和总糖的最大值均出现在花后60d的处理中；各处理滴定酸均高于对照；出汁率随处理时间延迟而降低。两品种花后40、60和80d处理的果实黑痘病和白腐病的发生均低于对照。冬芽副梢成熟度良好。结果表明，延迟栽培能够有效调节葡萄成熟期并改善原料质量，但同时也造成产量的下降和生产周期的加长。     

北方粳稻“植生带”育秧设备定向排种装置的研制

为满足超级稻每穴(2±1)粒种子精量播种的特殊农艺要求,在纸夹定位水稻精密育秧设备研究基础上,研发出一种新型超级稻定向排种装置。初步排种试验表明,该装置可将种箱中杂乱无章的稻种分离出来后,在组合滑道上逐渐沿其长轴方向排列成连续的种子流,为超级稻植生带育秧设备的研制提供理论与实践依据。     

走系统工程之路加快玉米联合收获发展步伐

对玉米联合收获机推广应用较多的山东、山西及河北等省的玉米联合收获机试验情况进行了研究分析．其结果表明，影响玉米联合收获机推广的诸多因素中，最为关键的因素就是行距的适应性问题。为此，结合小麦联合收获机推广经验，指出了加快玉米联合收获机推广应用速度的关键是实现玉米生产过程机械化，而在小麦玉米一年两熟地区则要从小麦的种植规格入手，即实现小麦玉米全过程的机械化；并将系统工程的方法运用于种植收获的全过程，真正实现优质与高效的现代化农业生产。     

双环带种肥穴播器的设计

针对目前穴播机械的现状,设计了一种新型的双环带种肥穴播器,介绍了其基本结构和工作原理.从结构上分析了种肥穴播合理性,并推导出了穴播器的入土端方程.试验证明,机速在1.0m/s时,该穴播器投放种子与肥料可靠,穴粒数、穴距和播深合格率都能满足要求.鸭嘴强制后开式设计有效解决了堵土问题,播种精度较高,可广泛应用于花生、棉花、玉米与小麦等农作物的播种.