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检索条件"任意字段=2nd IFIP International Conference on Computer and Computing Technologies in Agriculture"

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INTERNET USAGE IN THE FRESH PRODUCE SUPPLY CHAIN IN CHINA

INTERNET USAGE IN THE FRESH PRODUCE SUPPLY CHAIN IN CHINA

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Xiaoxiao Xu1, Yanqing Duan 1, *, Zetian Fu 2 , Xue Liu 2 1 University of Bedfordshire Business School, UK 2 China Agricultural University, PR China

Although effective implementation of the Internet technologies has a great potential for improving efficiency and reducing wastage within the fresh produce supply chain. the situation of the Internet usage by SMEs (small and medium sized enterprises) in the fresh produce supply chain is still unclear in China. As the main players, SMEs haven't been given enough attention from both academics and governments. Therefore, this research attempts to address this issue by, first, investigating the current usage of the Internet and related software by Chinese SMEs in the fresh produce supply chain, and then, by identifying enablers and barriers faced by SMEs to call government's attention. As a part of an EU-Asia IT&C funded project, a survey was carried out with SMEs in this industry from five major cities in China. The results reveal that in the relatively developed areas of China, SMEs in the fresh produce supply chain are rapidly adopting the Internet and software packages, but the level of adoption varies greatly and there is a significant lack of integration among the supply chain partners. Chinese SMEs are keen to embrace emerging technologies and have acted to adopt new software and tools. Given that cost of implementation is not a barrier, their concern over legal protection and online security must be addressed for further development.

关键词： Internet technologies, fresh produce supply chain, supply chain software and tools, small and medium sized enterprises (SMEs), China.

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FARMERS’ INFORMATION USAGE INTENTION IN CHINA BASED ON THE TECHNOLOGY ACCEPTANCE MODEL

FARMERS’ INFORMATION USAGE INTENTION IN CHINA BASED ON THE ...

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Jingjing Zhang 1,2 ,Xiaoshuan Zhang 2 ,Weisong Mu 2 ,Jian Zhang 2 , Zetian Fu2,* 1 College of Economics & Management,China Agricultural University,Beijing,P.R.China 100083 2 Key laboratory for modern precision agricultural integration Ministry of Education, China Agricultural University, Beijing,P.R.China 100083

Information technology acceptance has received much attention, but little research has been conducted to assess farmers' information adoption. Despite the importance of information, its value will not be realized if farmers are reluctant to accept it. This research aims to study farmers' information adoption in China, in order to provide some decision-making advice for the people and organization who supply the agriculture information. The model of information usage intention has been established based on the Technology Acceptance Model (TAM). A sample of 231 farmers participated in this study. The results show that the factors which influence the usage willingness for information are perceived usefulness, perceived ease of use, learning intention, risk preference and experience in information before. In addition, income and education may also affect the decision.

关键词： information demand, usage intention, technology acceptance model, perceived usefulness, perceived ease of use, perceived risk

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AUTOMATIC ASSEMBLY OF COMBINED CHECKING FIXTURE FOR AUTO-BODY COMPONENTS BASED ON FIXTURE ELEMENTS LIBRARIES

AUTOMATIC ASSEMBLY OF COMBINED CHECKING FIXTURE FOR AUTO-BOD...

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Jingtao Jiang1 , Rendong Sui1 , Yan Shi2 ,Furong Li1 , Caiqi Hu 1, * 1 College of Mechanical and Electrical Engineering, Qingdao Agricultrual University, Shandong Qingdao, 266109 2 Foodstuff Science and Engineering college, Qingdao Agricultural University, Qingdao, China, 266109

In this paper 3-D models of combined fixture elements are designed, classified by their functions, and saved in computer as supporting elements library, jointing elements library, basic elements library, localization elements library, clamping elements library, and adjusting elements library etc. Then automatic assembly of 3-D combined checking fixture for auto-body part is presented based on modularization theory. And in virtual auto-body assembly space, Locating constraint mapping technique and assembly rule-based reasoning technique are used to calculate the position of modular elements according to localization points and clamp points of auto-body part. Auto-body part model is transformed from itself coordinate system space to virtual assembly space by homogeneous transformation matrix. Automatic assembly of different functional fixture elements and auto-body part is implemented with API function based on the second development of UG. It is proven in practice that the method in this paper is feasible and high efficiency.

关键词： combined checking fixture automatic assembly auto-body part

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RESEARCH ON ASSESSMENT METHOD FOR RURAL INFORMATIZATION LEVEL BASED ON AHP

RESEARCH ON ASSESSMENT METHOD FOR RURAL INFORMATIZATION LEVE...

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Du Jing1,3 , Daoliang Li2 , Hongwen Li1,*, Yanjun Zhang2 1 College of Engineering, China Agricultural University, Beijing, P. R. China 100083 2 College of Information and Electrical Engineering, China Agricultural University, Beijing, P. R. China 100083 3 China Agricultural University Library, Beijing, P. R.China, 100083

Based on rural informatization connotation and five essential elements that affect rural informatization assessment, which are development environment, information infrastructure, information resource, information service system and application of information technology in rural areas, This paper designs an indicator system for rural informatization level assessment. Through AHP method, it sets up the hierarchical construction model of rural informatization assessment and weight of each indicator is calculated. Thus the evaluation method for assessment on rural informatization level is proposed in this paper. It combines subjective evaluation with objective appraisal and will help direct rural informatization management departments with jobs and promotes rural informatization development.

关键词： Rural informatization Assessment, Analytic Hierarchy Process(AHP) Indicator system

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NOndESTRUCTIVE DETECTION OF THE INTERNAL QUALITY OF APPLE USING X-RAY And MACHINE VISION

NONDESTRUCTIVE DETECTION OF THE INTERNAL QUALITY OF APPLE US...

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Fuzeng Yang 1,2, *,Liangliang Yang1 , Qing Yang1 , Likui Kang1 1 College of Mechanical and Electronic Engineering, Northwest agriculture and Forestry University, Yangling, China, 712100 2 Department of computer Science and Technology, Northwestern Polytechnical University, Xi'an, China, 710072

The internal quality of apple is impossible to be detected by eyes in the procedure of sorting, which could reduce the apple's quality reaching market. This paper illustrates an instrument using X-ray and machine vision. The following steps were introduced to process the X-ray image in order to determine the mould core apple. Firstly, lifting wavelet transform was used to get a low frequency image and three high frequency images. Secondly, we enhanced the low frequency image through image's histogram equalization. Then, the edge of each apple's image was detected using canny operator. Finally, a threshold was set to clarify mould core and normal apple according to the different length of the apple core's diameter. The experimental results show that this method could on-line detect the mould core apple with less time consuming, less than 0.03 seconds per apple, and the accuracy could reach 92%.

关键词： X-ray machine vision detection apple internal quality.

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EFFICIENT BAR-CODE WATERMARK SYSTEM TO PROTECT AGRICULTURAL PRODUCTS INFORMATION And COPYRIGHT

EFFICIENT BAR-CODE WATERMARK SYSTEM TO PROTECT AGRICULTURAL ...

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Lin Deng 1, *, Xiaoming Wen2 1 China Patent Information Center, State Intellectual Property Office of P.R.China, Beijing, P. R. China, 100088 2 Shandong University Library , Jinan , Shandong Province, P. R. China, 250100

In order to protect agricultural product information and copyright, this paper proposes an efficient bar-code watermark system with digital signature. The proposed system adopts digital signature to prevent a buyer from unauthorized copies and to prevent a seller from forged unauthorized copies. The proposed system also encodes the signature with bar-code and embeds the bar-code image into the original image. As long as the similarity of watermark extracts from the damaged image over a threshold, the signature can be fully recovered. It is a novel idea to bring the bar-code concept into watermark system to protect agricultural product information and copyright. Detailed simulation results show that the proposed system gets much better results than that with error correcting code scheme, and prove that the proposed system can protect agricultural product information and copyright effectively.

关键词： bar-code, digital signature, agricultural product, copyright protection

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PARAMETERIZED computer AIDED DESIGN OF STUBBLE CLEANER

PARAMETERIZED COMPUTER AIDED DESIGN OF STUBBLE CLEANER

引用

computer and computing technologies in agriculture——First ifip TC 12 international conference(CCTA2007) Volume I

作者： Lige Wen Jianqiao Li Xiuzhi Zhang Benard Chirende The Key Laboratory for Terrain-Machine Bionics Engineering Ministry of EducationJilin University College of Mechanical Science and Engineering Jilin University

The traditional agricultural machine design were represented as 2D drawing,which is difficult to modify,and also not intuitive in the solid way for the form and ***,software,UG-NX3,was used to conduct parameterized design of stubble cleaner *** parts were designed associatively and assembled *** structure of the whole machine and the spatial distribution of parts can be seen and analyzed *** UG-NX3 circumstance,the designed 3D model can be transformed automatically to 2D drafting which is used in fabrication and *** result proved that computer aided parameterized design can allow dynamical operation,preview and repeated modification of the design,reliably and ***,the optimum design efficiency of stubble cleaner is improved;3D modeling time and 2D drafting time is greatly decreased.

关键词： Stubble cleaner computer aided design parameterized design

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STUDIES ON THE RAPID METHODS FOR EVALUATING SEED VIGOR OF SWEET CORN

STUDIES ON THE RAPID METHODS FOR EVALUATING SEED VIGOR OF SW...

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Guangwu Zhao 1, *, Linlin Yang2 , Jianhua Wang3, Zhujun Zhu1 1 School of agriculture and Food Science, Zhejiang Forestry College, Lin’an, China, 311300 2 College of Foreign Languages, Wenzhou University, Wenzhou, China, 325027 3 Department of Seed Science and Technology, China Agricultural University, Beijing, China, 100094

Since the germination test is still the main method for evaluating seed vigor of sweet corn, it is necessary to study the rapid methods for evaluating their vigor. First, two vigor levels of 9 super sweet corn and 9 sugar enhanced corn hybrids were distinguished by accelerated ageing treatment. Next, their vigor statuses were tested by rapid methods such as electrical conductivity (EC), soluble sugar (SS), volatile aldehyde (VA), dehydrogenase activity (DA) and Q2 oxygen sensing technology. Correlation relationship was analyzed between the above tested values and vigor performances. The results showed that EC, SS, VA, DA, oxygen metabolism rate (OMR), critical oxygen pressure (COP) were all suitable to evaluate seed vigor of sweet corn. Furthermore, VA was optimal for evaluating seed vigor of super sweet corn. DA was optimal for evaluating sugar enhanced corn.

关键词： super sweet corn, sugar enhanced corn, seed vigor, rapid evaluation methods

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APPLICATION OF SUPPORT VECTOR MACHINE BASED ON TIME SERIES FOR SOIL MOISTURE And NITRATE NITROGEN CONTENT PREDICTION

APPLICATION OF SUPPORT VECTOR MACHINE BASED ON TIME SERIES F...

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Shaoe Yang 1, 2, Yuanfang Huang 1, * 1 Key laboratory of plant-soil interactions, MOE Key laboratory of soil and water, MOA College of Resources and Environment, China agriculture University, Beijing, P. R. China 100193 2 Institute of remote sensing applications Chinese academy of sciences, Beijing, P. R. China 100101

Support Vector Machine based on Time Series (SVM-TS) was applied to predict soil moisture and nitrate nitrogen (NO3--N) content. For the prediction of soil moisture, the statistical result (t-test) indicate that there is no obvious difference between predicted and observed values in 0-20cm and 20-60cm soil layers, and that SVM-TS is capable for soil moisture prediction. For the prediction of NO3--N content, there is no obvious difference between predicted and observed values in 0-30cm soil layer, although the difference in 30-60cm soil layer is obviously, compared to the variability of observed value, a large predicted error is acceptable, SVM-TS is applicable for NO3--N content prediction.

关键词： support vector machine, time series, soil moisture, nitrate nitrogen

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ON-LINE SORTING MATURITY OF CHERRY TOMATO BY MACHINE VISION

ON-LINE SORTING MATURITY OF CHERRY TOMATO BY MACHINE VISION

引用

The Second ifip international conference on computer and computing technologies in agriculture (CCTA2008)

作者： Yinglong Zhang1, Xiaoping Yin 2 , Xiaobo Zou 2 ,*, Jiewen Zhao2 1 Industry Center, Jiangsu University, Zhenjiang, Jiangsu 212013, China 2 Agricultural Product Processing and Storage Lab, Jiangsu University, Zhenjiang, Jiangsu 212013, China

The cherry tomatoes online sorting according to their maturity is an important procedure after harvest. This research proposed an automated cherry tomato grading system base on machine vision. Three images of different angles are obtained from each cherry tomato, allowing the inspection of approximately 90% of the fruit surface. 9 features were extracted from the one cherry tomato images. In order to distinguish into three grades (immature, half ripe and ripe), Principal component analysis (PCA) and linear discrimination analysis (LDA) were used to analyze the features. The PCA results show that ripe cherry tomatoes are distinguished from immature and half ripe ones. 414 cherry tomatoes were tested by the online sorting system. The overall accuracy was up to 94.9%. Furthermore, the grading speed of the sorting line reaches 7 cherry tomatoes per second which meet the actual demand of many farms.

关键词： Cherry tomato Machine Vision On-line Sorting maturaty

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