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基于灰色GM（1,1）的农业机械化水平预测模型（Prediction Model of Agricultural Mechanization Level in China Based on GM(1,1)）
农业机械化 机械化综合水平 灰色GM(1,1) 预测
2009/5/22
根据1986～2005年我国农业机械化综合水平统计数据，并对由于我国耕地面积统计滞后使得在机耕水平计算中存在误差进行了合理分析和修正，结合数据平滑处理，建立了基于灰色GM(1,1)的我国农业机械化综合水平预测模型。通过残差检验和后验差检验方法对预测结果进行了检验，模型拟合精度较好。采用模型对2006年我国农业机械化综合水平值进行预测，结果表现出较高的预测精度，进一步验证了所建模型的可行性。运用该模...
静电喷头雾化特性预测模型（Prediction Model for Atomization Performance of Electrostatic Spraying Nozzle）
静电喷头 雾化性能 预测模型
2009/5/22
将一种基于改进粒子群优化最小二乘支持向量机的预测模型引入静电喷雾雾化性能预测领域，并给出了相应的步骤和算法。该模型能方便地预测喷雾参数对喷头雾化性能的影响，有助于正确认识喷头雾化性能随喷雾参数的变化规律。通过具体实例及与其他几种预测方法的对比表明，在相同样本条件下，其模型构造速度比标准LS-SVM方法高近1个数量级，模型预测误差约为标准LS-SVM方法的50%，预测精度比常规BP模型高1个数量级。
A Prediction Method of Travel Demand of Cruise Ships in Japan
Tour Selection Model Characteristic Tours Potential Share Cruising Demand Economical Analysis
2009/5/19
In the present study, a new prediction method of travel demand of cruise ships is proposed in which the characteristic of each demand for choosing a tour, the characteristics of tours, and factors of ...
Prediction of Welding Distortion During the Assembly Process of Thin Plate Structures (1st Report)—Prediction of Welding Distortion Considering Gap and Misalignment—
Interface Element Welding Distortion Welding Sequence Gap Misalignment
2009/5/19
The welding distortion of a plate structure during the assembly process is influenced not only by the local shrinkage due to the welding thermal cycle but also by the root gap and the misalignment. Th...
An Efficient Coding Method for Intra Prediction Mode Information
Image/video coding H.264/AVC Intra prediction
2013/7/16
In H.264/AVC, the bits used for the Intra_4x4 prediction mode information usually occupy a high percentage in intra coding. Towards this issue, we present an efficient coding method for the Intra_4x4 ...
New Long-term Prediction of Ship Responses Considering Critical Standard Deviation
Long-term Prediction Critical Standard Deviation Ship Response Monitor Data Exceeding Probability Critical Value Critical Probability
2009/5/12
The conventional long-term prediction of responses estimates a higher value than that of real value, because it does not consider a ship operation and assumes the linearity between significant wave he...
Prediction of Propulsive Performance of High-Speed Boats using a CFD Simulation Method (1st Report)
CFD Simulation High-Speed Boat Running Attitude Resistance Coefficient
2009/5/12
The applicability of CFD simulations for the prediction of the propulsive performance characteristics of high-speed boats is examined. In this report, a CFD code, WIDSAN-VIII, is used for simulations ...
An Optimization Method for Full Form Ships Using a Simple Prediction of the Thrust Deduction Factor
Optimization Minimum Thrust Deduction Factor Nonlinear Programming
2009/5/12
Developing full form ship with maximum efficiency self-propulsion factors (t: Thrust deduction factor, ωs: Wake fraction, ηr: Relative rotative efficiency) is as important as developing one with light...
Sailing Performance Prediction of AC Boat by Use of CFD Analysis for Sails
Sail Velocity Prediction Program International America’s Cup Class CFD
2009/5/12
The optimization of the flying sail shape is performed for an International America’s Cup sailing boat by use of CFD code for the sails. After grid test is made to confirm the degree of accuracy, high...
Prediction of Maneuvering Hydrodynamic Forces and the Steering Motions Based on the Oblique Hydrodynamic Forces
Oblique Hydrodynamic Forces a Component-type Mathematical Model Hydrodynamic Characteristics Estimation of Hydrodynamic Forces Maneuvering Motion
2009/5/12
The authors had developed a component-type mathematical model of hydrodynamic forces acting on a ship hull in steering motion that is deduced from the simplified vortex model. This mathematical model ...
Prediction of future oil discoveries-An approach to “exploration simulator”-
binomial distribution fractal fluctuation Monte Carlo simulation
2009/5/6
Almost all sedimentary basins of the world have already been explored and field data have been accumulated. However, available statistical methods for predicting future discoveries (e.g. creaming cur...
A Design of the Liner Ship based on the Logistic Trend Prediction between China and Japan
Liner Ship Logistic Trend Prediction China and Japan
2009/4/29
Recently the amount of trade between China and Japan has been increasing. The trade value has grown by about 920% from 18.2 billion dollar in 1990 to 168 billion dollar in 2004. This paper presents a...
Fundamental study for prediction of productivity in oil/gas fractured reservoir based on flow-through experiment under confining pressure
tensile fracture permeability granite Rubber-Confining Pressure Vessel
2009/4/27
Flow-through experiments were performed for single tensile fractures artificially created in granite, using Rubber-Confining Pressure Vessel (R-CPV), which has been developed for the experiments und...
A neccesity for conceptual geological models in prediction of reservoir characteristics as a summary for the 2005 JAPT Geology and Exploration Symposium on “Recent progress in characterization and analysis for various types of reservoirs”
characterization reservoirs
2009/4/24
A neccesity for conceptual geological models in prediction of reservoir characteristics as a summary for the 2005 JAPT Geology and Exploration Symposium on “Recent progress in characterization and ana...
Prediction of useful casting structure applying Cellular Automaton method
Structure modelling Solidification Cellular Automaton Al-Si alloy
2011/3/31
The results of simulation investigations of primary casting’s structure made of hypoeutectic Al-Si alloy using the Calcosoft system with CAFE 3D (Cellular Automaton Finite Element) module are presente...