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检索条件"任意字段=第四届国际计算机与计算技术在农业中的应用研讨会"

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Design and Simulation for Bionic Mechanical Arm in Jujube Transplanter

Design and Simulation for Bionic Mechanical Arm in Jujube Tr...

引用

第四届国际计算机与计算技术在农业中的应用研讨会

作者： Yonghua Sun Wei Wang Wangyuan Zong Hong Zhang Zibo in Shandong LecturerMechatronics

In this paper an automatic bionic mechanical arm of jujube transplanter has been designed and simulated with Pro/E and ADAMS *** device can achieve the work of clamping—sending—setting the sapling and support the sapling to guarantee it perpendicularity in setting *** the structure of manipulator utilizing the simulation of hand *** is5-DOF at the manipulator to achieve *** dynamics mathematical model and estimated inseminate error of bionic *** three dimensional model of the manipulator was build up and simulated by using Pro/E *** up build the virtual prototype and kinetics simulation in ADAMS software and chalk up the dynamics parameter curve of clamping force *** manipulator will establish theory and practice foundation to the cyber-identify and cyber-supervise of sapling translating.

关键词： ADAMS spring Design and Simulation for Bionic Mechanical Arm in Jujube Transplanter Arm

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Spatial and Temporal Variability of Annual Precipitation during 1958-2007 in Loess Plateau,China

Spatial and Temporal Variability of Annual Precipitation dur...

引用

第四届国际计算机与计算技术在农业中的应用研讨会

作者： Rui Guo Fengmin Li Wenying He Sen Yang Guojun Sun Ministry of Education Key Laboratory of And and Grassland Ecology Lanzhou University

The non-parametric Mann-Kendall method and Sliding t-test were applied in this study to analyze the spatial and temporal patterns of trends of the precipitation in the Loess Plateau from 1958 to *** main trends of the precipitation in this region is downward,only four upward time series have not reach the significant *** of the abrupt changes happened in northeast of Loess Plateau during 1980 s and 1990 ***,the abrupt changes happened in the northeast portion of the Loess Plateau were relatively later than those in the west portion of the Loess Plateau.

关键词： Trend analysis Abrupt change Mann-Kendall method Sliding t-test method

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Dynamic Study of Farmers’ Information Adoption in China

Dynamic Study of Farmers’ Information Adoption in China

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Jingjing Zhang Lu Liu Jian Zhang Jinyou Hu College of Engineering China Agricultural University Beijing Information Science & Technology University

Agriculture information has played an important part in recently *** adoption of agriculture information is a dynamic process and many factors have influences on farmers’ information usage motivation and *** main objective of this paper is to analyze and predict the variations of farmers’ decisions in order to make the information more reachable to *** this study,farmers are divided into three categories based on the style of risk preference,which are the risk evaders,risk likers and risk *** compare the difference of the information adoption rates across varied sections of farmers,we extend our research and the factor of time is added into the model.A sample of 34 farmers takes part in the continuous surveys with the duration of one *** the simulation and analysis in the light of the information usage intention equation,it is found that farmers’ information demand presents a characteristic of seasonality and keeps stable after a period.

关键词： Information Demand Adoption Risk Preference Dynamic Behavior

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Analysis of Factors Influencing the Off-Farm Employment Based on the Method of PLS

Analysis of Factors Influencing the Off-Farm Employment Base...

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Ying Huang Yizong Xu School of Economics and Management Beijing Forestry University

With the widening income gap between the urban and rural areas,off-farm employment has undergone rapid *** essay aims at analyzing the factors influencing the off-farm employment according to the statistics collected from Changle City in Fujian Province using the method of Partial Least-squares（PLS）.Since current statistical methods such as the least squares,Logistics and the principle component analysis can not avoid the existence of the problems such as multiple correlation,single dependent variable and poorly explanatory ***,these problems can be smoothed away by implementing the method of *** results show that training experience of the rural labor force,education level,vocational skills,and health status are main factors influencing the off-farm employment while working area only has a slight *** correspondent solutions and advice are available according to the analysis.

关键词： Off-farm Employment Partial Least-Squares（PLS） Fujian

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Study for Organic Soybean Production Information Traceability System Based on Web

Study for Organic Soybean Production Information Traceabilit...

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Xi Wang Chun Wang Xinzhong Wang Weidong Zhuang College of Engineering Heilongjiang Bayi Agrucultural University

The paper analyzes the mode of organic soybean production supply chain and identifies the information needed to be recorded in each step of producing organic soybean through surveying the actual situation of organic soybean on the Red Star Farm combined with the mode of operation among enterprises,then it ensures integrity and consistency of information flow *** the same time,it establishes organic soybean production information traceability system,which adopts B/S architecture,ASP dynamic web technology and SQL Server 2005 *** the system,enterprises can quickly inquire about the information of cultivation and processing of raw materials as well as the situation of products in ***,consumers can also inquire about the information of products by means of Internet quickly and easily,which enhances the transparency of production chain and ensures food safety.

关键词： soybean traceability system internet agriculture information

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An Inspection Method of Rice Milling Degree Based on Machine Vision and Gray-Gradient Co-occurrence Matrix

An Inspection Method of Rice Milling Degree Based on Machine...

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Peng Wan Changjiang Long College of Engineering Huazhong Agricultural University College of Biological and Agricultural Engineering Jilin University

A detection method of the rice milling degree was proposed based on machine vision with gray-gradient co-occurrence *** an experimental mill machine,different milling degree samples of rice were *** rice kernel image of the different milling degree was get by a machine vision detecting system,then the texture features of the rice image were obtained by using gray-gradient co-occurrence matrix,at last the Fisher discriminate functions constructed using stepwise discriminate analysis were used to detect the milling degree of the rice *** testing results show that the average accuracy rate of the different milling degree detected using the method of 4 rice samples is 94.00%.

关键词： Milling degree Machine vision Gray-gradient co-occurrence matrix Fisher discriminance Rice

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Research of Pest Diagnosis System Development Tools Based on Binary Tree

Research of Pest Diagnosis System Development Tools Based on...

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Yun Qiu Guomin Zhou Agricultural Information Institute of CAAS

A visual pests diagnosis system development tools based on binary tree(abbreviation:knowledge system development tools) was developed by techniques of computer visualization,binary tree,XML database and *** tool combined tree knowledge expression with rule-based reasoning machine,proposed the knowledge acquisition and the reasoning technique based on binary tree,and solved the problem of knowledge acquisition used for pests diagnosis with an expert system development tools—*** reasoning machine with stateless continuous reasoning technology can improve the efficiency of knowledge acquisition and system *** this article,we introduced the components and working principles of the pest diagnosis system development tools,and described its usage with a simple example.

关键词： pest diagnosis binary tree CLIPS system knowledge system knowledge expression

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An Agricultural Tri-dimensional Pollution Data Management Platform Based on DNDC Model

An Agricultural Tri-dimensional Pollution Data Management Pl...

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Lihua Jiang Wensheng Wang Xiaorong Yang Nengfu Xie Youping Cheng Agriculture Information Institute Chinese Academy of Agriculture Sciences Key Laboratory of Digital Agricultural Early-warning Technology Agriculture Information InstituteChinese Academy of Agriculture Sciences

DNDC is a computer simulation model of carbon and nitrogen biogeochemistry in *** is used in agricultural tri-dimensional pollution control *** from abroad advanced technologies and research methods,we have developed an agricultural tri-dimensional pollution data submission and management platform based on DNDC *** platform is very important for sharing and building our agricultural carbon and nitrogen chain database.

关键词： DNDC United Storage Format Conversion

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Computer-Aided Design System Development of Fixed Water Distribution of Pipe Irrigation System

Computer-Aided Design System Development of Fixed Water Dist...

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Mingyao Zhou Susheng Wang Zhen Zhang Lidong Chen College of Hydraulic Science and Engineering Yangzhou University

It is necessary to research a cheap and simple fixed water distribution device according to the current situation of the technology of low-pressure pipe *** article proposed a fixed water distribution device with round table based on the analysis of the hydraulic characteristics of low-pressure pipe irrigation *** simulation of FLUENT and GAMBIT software conducted that the flow of this structure was steady with a low head loss comparing to other types of *** order to improve the design efficiency,a program was made using Visual *** system was user-friendly,flexible operation,convenient and able to meet the needs of different users.

关键词： pipeline irrigation fixed water distribution device ComputerAided

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Design and Implementation of Automatic Control System for Rice Seed Tape Winding Units

Design and Implementation of Automatic Control System for Ri...

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第四届国际计算机与计算技术在农业中的应用研讨会

作者： Hongguang Cui Wentao Ren Benhua Zhang Yi Yang Lili Dai Quanli Xiang College of Engineering Shenyang Agricultural University

In order to adapt to the requirements of the development for precision agriculture technology,making the rice seed tape planting technology has been widely *** paper-making improved the design on the rice seed tape twisting machine especially the seed tape winding *** proposed seed tape winding automatic control system based on STC90C514 AD to realize the rotating speed adjustment of the seed tape disk,used an angular displacement sensor real-time detecting on the disk diameters during the winding *** system can make the rotating speed reduce when the diameters *** experimental results show that the machine performs *** of variation of the seed rope linear velocity was 4.64%,the tension uniformed during the seed tape winding *** working efficiency of the machine is 360m/*** shows that the machine and the control system meet the overall design requirements well.

关键词： The rice seed tape breaking force of seed tape winding machine sensor detection

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