Computer and Computing Technologies in Agriculture

Name: Computer and Computing Technologies in Agriculture | 5th IFIP TC 5, SIG 5.1 International Conference, CCTA 2011, Beijing, China, October 29-31, 2011, Proceedings, Part II
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5th IFIP TC 5, SIG 5.1 International Conference, CCTA 2011, Beijing, China, October 29-31, 2011, Proceedings, Part II

Daoliang Li Yingyi Chen(Editor)

Springer (Publisher)

Published on 18. January 2012

XIV, 666 pages

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Content

Title
Preface
Organization
Table of Contents
GIS, GPS, RS and Precision Farming
Study on Soil Nutrients Spatial Variability in Yushu City
Materials and Methods
Study Area Description
Soil Sampling and Analyses of Nutrients
Geostatistical Analysis
Data Treatment with Computer Software
Results and Discussion
Descriptive Parameters of the Raw-Data Set
The Test of Soil Nutrient Content Normality
Semi-variogram Analysis
Analysis of Soil Spatial Distribution Maps
Conclusions
References
The Application of Classical Least Square Algorithm in the Quantitative Analysis of Lime in Wheat Flour by ATR-MIR Spectroscopy
Introduction
Experiment
Instrument and Materials
Method
Result and Discussion
Development of Calibration Models
External Validation
Conclusion
References
Study of Quantitative Analysis for Moisture Content in Winter Wheat Leaves Using MSC-ANN Algorithm
Instruction
The Algorithm
The Algorithm of MSC
The Algorithm of ANN
Experiment
Test Method and Instrument
The Information of Sample Spectra
The Results of Experiment and Analysis
Modeling for Winter Wheat Leaves in Booting Stage and Prediction Results
Modeling for Winter Wheat Leaves in Milk Stage and Prediction Results
Error Analysis and Model Evaluation
Conclusion
References
FT-NIR and Confocal Microscope Raman Spectroscopic Studies of Sesame Oil Adulteration
Introduction
Materials and Methods
Sample Description
FT-NIR Analysis
Raman Analysis
Discriminant Analysis
Results and Discussion
FT-NIR Spectra
Confocal Micro-Raman Spectra
Conclusions
References
Non-Point Source Pollution Characteristics of Agriculture-Derived Nitrogen in Groundwater in Suburban Area of Shanghai Based on Models
Introduction
Study Area
Material and Method
Data Collection
Model Parameters
Study Approach
Results and Discussion
The Analysis of Water Samples
Characteristics of NPS Soil Nitrogen Pollution
Conclusion and Discussion
References
Nondestructive Estimation of Total Free Amino Acid in Green Tea by Near Infrared Spectroscopy and Artificial Neural Networks
Introduction
Materials and Methods
Preparation of Samples
Reference Measurement
NIR Spectra Acquisition
Spectral Data Processing
ANN Description
Software
Results and Discussion
Reference Data Description
Models Evaluation
PLS Models
BP-NN Models
Discussion of the Results
Conclusion
References
Daily Reference Evapotranspiration Estimation Based on Least Squares Support Vector Machines
Introduction
Materials and Methods
Investigation Areas
Estimation of Reference Evapotranspiration
LSSVM and Models Evaluation [15, 16]
Data Normalization
Discussion of Results
Conclusions
References
Data Analysis of Cold Rice Blast Based on Near Infrared Spectroscopy
Introduction
Materials and Methods
Sample Selection
Experimental Apparatus
Healthy Plants and Infected Plants in Different Parts of Data Collection
Blast Leaves of Three Levels of Data Collection Disease
Five Diseased Levels of Infected Seed of Data Collection
Four Diseased Levels of Infected Stems of Data Collection
Error Sources
Summary
References
Study on Dynamic Variation Regularities of Regional Groundwater Depth Based on Complexity Diagnosis
Introduction
Research Area and Methods
Research Area
Data Sources
Diagnose Measurements of Hydrological Series Complexity
Modeling Principles of Hydrological Series Random Model Based on Wavelet Transform
Results and Analyses
Complexity Measures of Groundwater Level Series
Synthetical Complexity Measures of Groundwater Level Series
The Model of Complexity Groundwater Depth Series Combination Stochastic Forecasting Model Which Is Based on Wavelet Transform in Northern Region of Jiansanjiang Branch Bureau
Conclusions
References
Comparison of Spectral Indices and Principal Component Analysis for Differentiating Lodged Rice Crop from Normal Ones
Introduction
Methodology
Study Sites and Materials
Hyperspectral Measurement
Hyperspectral Data Preprocessing
Analytical Techniques
Results and Discussions
Canopy Hyperspectral Reflectance
Results of Probabilistic Neural Network (PNN) Classifier
Conclusions
References
Sustainable Fertilizer Level for Winter Wheat in Different Rainfall Regions on the Loess Plateau of China
Introduction
Materials and Methods
Field Experiment
EPIC Model
Methods
Design for the Simulation
Results
Evaluation Results of the EPIC Model
Simulation Results of Winter Wheat Yield and Soil Water
Discussions
Fertilizer, Dry Soil Layer and Rainfall
Fertilizer, WUEG and IRFG
Sustainable Fertilizer Level for Winter Wheat Field
Conclusions
References
Based on Vague Sets of Strawberry Varieties Resistance Comparison
Introduction
Basic Concepts
Vague Sets Definition
Creating Vague Environment
A Kind Vague Membership Data Mining
Similarity Measures between Vague Membership
New Theorem and New Method
Strawberry Varieties Resistance Comparison
Establishing Comprehensive Characters Set
Screening Excellent Varieties Set
Extracting Theory Optimal Varieties Set
The Single-Value Date Transformed into Vague Date, Obtaining Different Varieties Vague Sets
Vague Resistance Analysis 1
Vague Resistance Analysis 2
Conclusion
References
Evaluating New Varieties of Wheat with the Application of Vague Optimization Methods
Introduction
Basic Concept
Vague Environmental Construction
The New Similarity Measures between Vague Values
Vague Similarity Measures between the New Vague Sets of Metrics
Vague Optimization
Optimal Assessment of New Varieties of Wheat
To Establish the Evaluation Set of Traits
To Set Up the Optimal Set of New Varieties of Wheat
To Extract the Ideal Project
Enter the Vague Environment
Vague Optimization
Conclusion
References
Research on Effect of Ventilated Region to Grape Rain Shed Performance Based on CFD
Introduction
Material and Method
Grape Multi-span Greenhouse
CFD Numerical Simulation Method
Results and Discussion
Airflow Distribution Simulation of Multi-span Grape Rain Shed Based on CFD
Temperature and Rainproof Performance Simulation of Multi-span Grape Rain Shed Based on CFD
Summary
References
Research on Evaluation of Agricultural Planting Security in Hebei Province
Introduction
Model Design
Specification of a Model
Build Judgment Matrix
Weight Calculation of Single Hierarchy and Consistency Test
Weight Calculation of Overall Hierarchy and Consistency Test
Conclusions and Recommendations
References
Evaluation of Temporal Resolution Effect in Remote Sensing Based Crop Phenology Detection Studies
Introduction
Data Description
Study Sites
Datasets Description and Preprocessing
Methodologies
Curve Fitting Strategy for Daily Data
Phenology Stage Estimation Based on NDVI Curve Feature Points
Evaluation Methods
Results and Discussion
Conclusion
References
Agricultural Landscape Dynamics and Its Response in Seasonal Vegetation Activities in the Loess Plateau, Northern Shaanxi, China
Introduction
Study Area and Materials
Study Area
Data Used
Methods
Data Pre-processing
Classification of the 1987 and 2007 Landsat TM Images
Classifications of Landscape Dynamics
Characteristics of Seasonal Vegetation Activities
Results
Changes of the Landscape Pattern between 1987 and 2004
Landscape Dynamics and Landscape Classes
Landscape Dynamics and Spatial Distribution
Seasonal Vegetation Activities of Landscape Subclasses
Seasonal Vegetation Activity of Landscape Dynamics
Discussion
Conclusion
References
Shape Feature Extraction of Wheat Leaf Disease Based on Invariant Moment Theory
Introduction
Shape Feature Extraction
Invariant Moment
Definition of New Shape Feature
Result and Discussion
Conclusion
References
Nitrogen Status Estimation of Winter Wheat by Using an IKONOS Satellite Image in the North China Plain
Introduction
Material and Methods
The Experiments
Field Survey and Agronomic Measurements
IKONOS Image Processing
Data Analysis
Results
Nitrogen Status of Wheat at Shooting Stage
Correlations of Vegetation Indices with Wheat N Status at Shooting Stage
Nitrogen Uptake Estimation of Winter Wheat for Farmers' Fields
Discussion
References
Assessment of Potential Risk in Soil and Early Warning Analysis in Four Counties, Northeast China
Introduction
Data and Methods
Study Area and Data
Potential Risk Assessment
Early Warning Analysis
Results and Discussion
Characteristic Analysis of the Content of Heavy Metal in Farmland Soil
Single and Comprehensive Potential Risk Assessment of Heavy Metal in Soil
Forecast and Early Warning Analysis
Conclusions
References
The Comparative Analysis of Spatial Structure of Ji Wheat 22 Yield Based on Different Stochastic Samplings
Introduction
Material and Methodology
Study Area and Ji Wheat 22 Cultivar
Experimental Sites and Data Acquisition
Inverse Distance Weighting Method
Results and Analysis
Spatial Autocorrelation Characteristics
Spatial Structure Analysis of Wheat Yield
Conclusions and Discussion
References
Research on Throwing Soil Regular Pattern of Reversal Cultivated Land and Fertilization Seeder
Introduction
Pattern of Reversal Cultivated Land Soil Grain Distribution Calculation
No Collision Soil Particle Movement Analysis
The First Meeting with Cover Shell Collisions Motion Situation Analysis
Determine Trajectory of Soil Particle Flow Which Collision with Spin PlowK nife Again
Decorate Sowing Tub
Conclusion
References
A Research about the Application of Information Technology in the Precision Agriculture: Taking the Operating System of Shanghai Agriculture Economy as an Example
Introduction
The Definition of "Precision Agriculture"
The Present Situation and Problems in Precision Farming in Shanghai
The Present Situation
Advantages and Disadvantages
The Relationship between "the Operating System of Shanghai Agricultural Economy" and "Precision Agriculture"
Technical Framework and Workflow of "the Operating System of Shanghai Agricultural Economy"
Technical Framework of the System
The Workflow of the System
Database Design of "the Operating System of Shanghai Agricultural Economy"
Basic Space Database
Service Database
Data Description
The Goal of "the Operating System of Shanghai Agricultural Economy"
References
Research on the Data Conversion Specification for Chinese Agricultural Product Quantity Safety
Problem Statement
The Current Main Methods of Data Conversion
Conversion Based on the Timeliness of Data
Conversion Based on Different Data Structure
The Functional Structure of Agricultural Product Quantity Safety Data Conversion
The Functional Structure of Data Conversion of Agricultural Product Quantity Safety Management System
The Main Functional Module Features of Data Conversion
The Basic Data Conversion Process of Agricultural Product Quantity Safety
The Exchange Format Design for Basic Data and Shared Data of Agricultural Product Quantity Safety
Extraction and Standardization of Data Elements
Data Classification and Coding
The Composition of Data Exchange Format
Summary
References
Small-Scale Evaluation of Tobacco Planting Suitability Based on Spatial Information Technology
Introduction
Materials and Method
Study Area
Data Source
Geostatistics Method
Comprehensive Suitability Evaluation
Results
Descriptive Analysis of Soil Nutrients
The Spatial Analysis of Soil Nutrients
Evaluation Result
Discussion and Conclusion
References
Study on Spatial Model and Service Radius of Rural Areas and Agriculture Information Level in Yellow-River Delta
Introduction
Material and Methodology
Study Area and Indices System Establishment
Moran's I Coefficient and Radial Basis Function
Results and Analysis
Moran's I Coefficient Analysis
Service Radius Surface
Conclusions and Discussion
References
The Effect of Intercropping of Maize and Soybean on Microclimate
Materials and Methods
Results and Discussion
The Difference of Temperature and Relative Humidity Beside Maize Plant at Heading Stage in the Monocropping and Intercropping
The Change of Light Intensity Beside Maize Plants above the Ground 30cm and 70cm in Monocropping and Intercropping at Heading Stage
Comparing Biological Characters of Maize in Monocropping and Intercropping
Conclusions
References
Estimating Foliar Pigment Concentration of Rice Crop Using Integrated Hyperspectral Index
Introduction
Materials and Methods
Field Experiment
Hyperspectral Reflectance Data Acquisition
Foliar Pigment Concentration Acquisition
Data Analysis
Results
Leaf Hyperspectral Reflectance
Relationship between Hyperspectral Reflectance and Leaf Pigment Concentration
Regression between Pigment Concentration and Integrated Hyperspectral Index
Discussion and Conclusion
References
Identifying Leaf-Scale Wheat Aphids Using the Near-Ground Hyperspectral Pushbroom Imaging Spectrometer
Introduction
Materials and Method
Near-Ground Hyperspectral Imaging Device
Data Acquisition and Preprocessing
Results and Discussion
Analysis of Spectral Characteristics of Leaf-Scale Wheat Aphids
Identifying Aphids Using the PIS Image
Conclusion
References
Research on Application of Web Log Analysis Method in Agriculture Website Improvement
Introduction
Materials and Methods
Web Log of the Agricultural Scientific Data Center Collection
Web Log Data Processing
Log Data Mining and User Information Behavior Analysis
Experiments and Analysis
Conclusions
References
Spatial Pattern of Plant Specimen and Its Implications in Conservation Biology in Hengduan Mountains of Southwest China
Introduction
Data Collection and Methods
Results
Frequency Distribution of Specimen Density and the Discreteness Analysis
Spatial Pattern of Specimen Density and Its Interpretation
Correlation between Specimen Density and Species Density
The Implications in Conservation Biology
Conclusions
References
Determination of Corn Nutrient Status under N&K Stressed Condition Using Hyperspectral Analysis
Introduction
Materials and Methods
Experiment Design
Spectra
Determination of Chlorophyll and Total Nitrogen Content
PLSR Analysis and Multiple Linear Regression
Result and Discussion
Chlorophyll and Total Nitrogen Content
Correlation between Total N Content and Chlorophyll Content
Leaf Spectrum
Wavelength Selection and VIs Regression
PLSR for Total N and Chlorophyll Content
MLR Analysis for Total N and Chlorophyll Content
Conclusion
References
Research in Crop Land Suitability Analysis Based on GIS
Introduction
Research Methods
Evaluation Factors Selected
The Experiment
Data Preparation
Suitability Analysis Process
Soil Pollution Analysis
Land Comprehensive Evaluation Analysis
Conclusion
References
Research on WSN Channel Fading Model and Experimental Analysis in Orchard Environment
Introduction
Principles and Methods
Path Loss Model
Experimental Device
Experimental Methods
Results and Discussions
Path Loss Model
The Effects of Different Antenna Heights on the 2.4GHz Band
The Effects of Different Antenna Heights on 433MHz Channel
Comparison between Different Channels
Conclusions
The Impact of the Antenna Height
The Suitable Antenna Height
Wireless Channel Frequency Selection
Suggestions on Wireless Node Localization
References
Analysis of Trace Elements in Leaves Using Laser-Induced Breakdown Spectroscopy
Introduction
Experimental Setup
Experimental Results and Analysis
Conclusion
References
Land Use/Land Cover Classification Based on Multi-resolution Remote Sensing Data
Introduction
Overview of Land Use/Land Cover Classification with Remote Sensing
Land Use/Land Cover Classification Based on High Spatial Resolution [1]~[3]
Land Use/Land Cover Classification Based on Medium Spatial Resolution [4]~[8]
Land Use/Land Cover Classification Based on Low Spatial Resolution [9]~[20]
Land Use/Land Cover Classification Based on Multi Spatial Resolution
The Land Use/Land Cover Classification in Study Area
The Overview of Study Area
Land Use/Land Cover Classification System in Study Area
Conclusions
References
Study on Quick Identify of the Brand of Seabuckthorn Juice Based on PCA and SVM
Introduction
Experiment Material
Experimental Device
Source of Experimental Samples
Spectral Data Pretreatment
Results and Analyses
Spectrum Curve Analysis
Main Component Qualitative Cluster Analysis
The Principal Component Analysis Results
Support Vector Machine Model
Conclusion
References
Research and Application of Space-Time Evolution of Soil Fertility Data Mining Based on Visualization
Introduction
Materials and Methods
Study Area
Data Acquisition and Processing
Method Description
Results and Analysis
Three-Dimensional Spatial Variation of Soil Nutrient Spatial Map
Visualization of Spatial Data Mining
Space-Time Evolution of Soil Fertility
Conclusion and Discussion
References
Spatial Information Sharing Technology Based on Grid
Introduction
Present Situation and Analysis of Geospatial Information Sharing
Present Situation of Sharing Geospatial Information
Existed Problems
Traditional Geospatial Information Sharing
Analysis of Implementation Technology
Grid Technology
Spatial Information Sharing Service Based on Grid
Technical Line
Sharing Platform Frame
Key Technologies
Results
References
A Robust Graph Based Learning Approach to Agricultural Data Classification
Introduction
Graph-Based Semi-Supervised Learning
Graph-Based Learning Theory
The Robustness of Graph-Based Learning
The Proposed Classification Approach Based on Graph-Based Learning
Graph Construction
Label Propagation
The Proposed Key Algorithm
Experimental Results and Discussion
Experimental Data Sets
Performance Measures
Experimental Results and Discussion
Conclusion
References
Wheat Grain Protein Content Estimation Based on Multi-temporal Remote Sensing Data and Generalized Regression Neural Network
Introduction
Material and Method
Research Region
Data Acquisition and Preprocessing
Data Analysis
Results
Conclusion and Discussion
References
Study on the GPS Data De-noising Method Based on Wavelet Analysis
Introduction
Principle of Wavelet Threshold De-noising
Select Threshold Function
Select Threshold
The Application of Wavelet Analysis in GPS Signal Noise
Conclusion
References
Forest Cover Classification from Multi-temporal MODIS Images in Southeast Asia Using Decision Tree
Introduction
Study Area and Data
Material and Method
Data
Forest Classification Method
The Choice of Sample Set of Forest Types
Decision Tree Classification Algorithm
Sample Precision Analysis
Results
Discussions
References
Large-Scale Microwave Remote Sensing of Retrieving Surface Multi-parameters Using Active and Passive Satellite Data: In the Tibetan Plateau Region of Maqu
Introduction
Study Region and Data
Physical Models and Retrieval Algorithm
Applicability of the Radiation Model
Scattering Parameters of the Model Sensitivity Analysis
Datainversion
Forward Modeling and Calibration of Radiation
Scatter Meter to Estimate Roughness
Scatter Meter Soil Moisture Inversion
Conclusions
References
Grading Method of Crop Disease Based on Image Processing
Introduction
Materials and Method
Materials
Testing Device
Methods
Results and Analysis
Disease Image Preprocess
Image Segmentation
Grading Method of Crop Disease Based on Image Processing
System Realization
Conclusion
References
Evolution Characteristics for Water Eco-Environment of Baiyangdian Lake with 3S Technologies in the Past 60 Years
Introductions
General Situation of Baiyangdian Lake-Basin
Materials and Methods
Monitoring on Water Quality and Water Level in Baiyangdian Lake
Monitoring on Landscape Pattern of Water Ecosystem with Remote Sensing and Its Analysis Methods
Meteorological Data
Evolution Trend for Water Eco-Environment in the Past 60 Years
Dynamic Water Level in Lakes
Space-Time Evolution Trend of Water Ecological Landscape Pattern
Spatiotemporal Variation of Water Environmental Quality
Analysis on Driving Mechanism of Water Eco-Environment Evolution
Climatic Changes in Baiyangdian Lake
Human Activity
Results
References
Application and Evaluation of Wavelet-Based Denoising Method in Hyperspectral Imagery Data
Introduction
Materials and Methods
Hyperspectral Data Collection
Data Pre-processing
Denoising Methods
Evaluating Methods
Results and Analysis
Discussion and Conclusions
References
Estimation of Maize Planting Area through the Fusion of Multi-source Images
Introduction
Study Area and Data Preprocess
Study Area
Data Preprocess
Method and Technical Process
Fusion Model of Wavelet Transform
Reconstruction and Analysis of the Time-Series NDVI
Minimum Distance Classifier
Accuracy Evaluation
Results
Conclusion and Discussion
References
Discriminant Analysis of Red Wines from Different Aging Ways by Information Fusion of NIR and MIR Spectra
Introduction
Experimental
Wine Samples
Instruments and Procedures
Results and Discussion
Data Level Fusion
Feature Level Fusion
Conclusions
References
Study on Automatic Composition of Semantic Geospatial Web Service
Introduction
The Basis of Semantic Geospatial Services Technology
Web Services
Semantic Web Services
Geospatial Services
Integration Framework Design of Semantic Geospatial Services
An Example of Application
Conclusions
Reference
The Estimation of Winter Wheat Yield Based on MODIS Remote Sensing Data
Introduction
Study Area and Data Processing
Study Areas
Data Processing
Estimation Methods and Results Analysis
Estimation Methods
Result Analysis
Implementation of Web Publishing System
Discussion and Conclusions
References
Prediction of Wheat Stripe Rust Based on Neural Networks
Introduction
Materials and Methods
Materials
Methods
Results and Analysis
Conclusion and Discussion
References
Research on Surface Sampling for Determination of Pesticide Residues in Pome Fruit
Introduction
Materials and Methods
Chemicals and Reagents
Apparatus
Sample Preparation
Determination of Phoxim in Apple by GPC-GC/MS
Quality Assurance/Quality Control
Results and Discussion
Determine of the Parameters for Surface Sampling
Study of the Weight Coefficient of Pesticide Residues in Pericarp
Formula for Calculating the Amount of Pesticide Residues in the Epidermis
Application of the Surface Sampling Method on Rapid Detector of Pesticides
Discussion
References
Hyperspectral Discrimination and Response Characteristics of Stressed Rice Leaves Caused by Rice Leaf Folder
Introduction
Methodology
Study Sites
Foliar Hyperspectral Reflectance Measurement
Foliar Pigment Concentration Measurement
Data Preprocessing
Analytical Techniques
Results
Hyperspectral Response Characteristics of Paddy Rice Leaves
Principal Component Analysis
Results of Support Vector Classification Machine
Discussions
Conclusions
References
Image Segmentation of Pseudo-foreign Fibers in Cotton on the Basis of Improved Genetic Algorithm
Introduction
Samples and Methods
Sample Preparation
Image Acquisition
Method Selection
Traditional Genetic Algorithm
Improved Genetic Algorithm
Image Segmentation Steps on the Basis of Improved Genetic Algorithm
Results and Analysis
Conclusion
References
Research and Design of an Agricultural Scientific Instruments Classification and Code Management System
Introduction
Research Status
System Design and Architecture
Agricultural Scientific Instruments Classification Method
Agricultural Scientific Instruments Coding Method
System Implementation
Development Operation Environment
Hardware Environment
Software Environment
Key Algorithm
Agricultural Scientific Instruments Names Fuzzy Query
Chinese Characters Automatically Converts Spell Brief-Code Algorithm
Conclusions
References
The Self-adaptive Adjustment Method of Clustering Center in Multi-spectral Remote Sensing Image Classification of Land Use
Introduction
Multi-Spectral Remote Sensing Image Analyses
Distribution of Within-Class Distance
The Analysis of the Land Use Classification of Multi-spectral
Adaptive Method of Cluster Centers
The Accuracy Analysis of the Effects of the Phenomenon of the " Same Objects in Different Spectral"
Adaptive Step
Experiment
Common Method of Classification
Adaptive Process of Cluster Centers and the Results of Classification
Conclusions
References
A Review of Measurement Methods of Dissolved Oxygen in Water
Introduction
Methods and Principle of DO Measurement
Iodometric Method (GB7489-87)
Current Determination Method (Clark OXYSENS)
Fluorescence Quenching
Other Detection Methods
The Present Situation of the Research on DO in Water at Home and Abroad
Conclusion
References
Study on the Walnut Mechanical Characteristics and Shucking Technology Based on Finite Element Analysis
Introduction
Geometry Size and Mechanical Characteristics of Walnut
Geometry Size
Mechanical Characteristics
Finite Element Model of Walnut
Geometry Model
Element Type Selection and Division
Definition of Load and Constraint
Finite Element Analysis of Walnut
Stress and Strain Analysis of Walnut Applied with the Concentrated Load in the Long Axis
Stress and Strain Analysis of Walnut Applied with the Uniform and Linear Load in the Long Axis
Stress and Strain Analysis of Walnut Applied with the Uniform Surface Load in the Long Axis
Stress and Strain Analysis of Walnut Applied with the Concentrated Load in the Short axis
Stress and Strain Analysis of Walnut Applied with the Uniform and Linear Load in the Short Axis
Stress and Strain Analysis of Walnut Applied with the Uniform Surface Load in the Short Axis
Conclusions
References
Experimental Study on Forced-Air Precooling of Dutch Cucumbers
Introduction
Materials and Methods
Materials
Experimental Conditions
Data Acquisition System
Results and Discussions
The Effect of the Air Velocity on the Falling Temperature of the Center
The Effect of the Initial Temperature of Cold Air during the Precooling Process
The Effect of the Initial Temperature on the Final Temperature for the Cucumber
The Temperature Changes in Different Section for the Whole Precooling Process
Conclusions
References
Experimental Study on the Effects of Mechanical and Physical Characteristics on Walnut Shucking
Introduction
Materials and Methods
Materials
Devices
Methods
Results and Discussion
Analysis of the Cracking Process of Walnut Shell
Analysis of the Influence Factors of Walnut Cracking
Conclusions
References
Research on the Effects of Mechanical and Physical Characteristics on Peanut Shucking
Introduction
Materials and Methods
Materials
Devices
Methods
Results and Discussion
Analysis of the Cracking Process of Peanut Shell
Analysis of the Influence Factors of Peanut Cracking
Conclusions
References
Preliminary Study on Soil Moisture Forecast of Winter Wheat
Introduction
The Monitor and Frequency for Soil Moisture
The Method of Soil Moisture Monitor
Soil Moisture, the Content and Frequency of Meteorological
Method and Model for Soil Moisture Forecast
Experimentation Design and Results Analysis
Experimentation Design
Result of Analysis
Conclusion and Epilogue
References
Qualitative Analysis of Age and Brand of Unblended Brandy by Electronic Nose
Introduction
Experimental
Samples
Electronic Nose
Data Analysis
Results and Discussion
Principal Component Analysis Results
Clustering Analysis Result
Conclusions
References
The Measurement of the Agricultural Informatization Contribution Rate Based on the Analysis of the Composite Index and the C-D Production Function
Introduction
Establishing the Agricultural Informatization Evaluation Index System
The Infrastructure of Agricultural Informatization (F)
Resources of Agricultural Informatization (R)
The Application of Agricultural Informatization (A)
Personnel in Agricultural Informatization (H)
The Policy Environment of Agricultural Informatization (E)
Testing Indices of Agricultural Informatization
Measuring the Indices
Measuring the Overall Index
Measuring the Agricultural Informatization Contribution Rate by C-D Production Function
Model Establishment
Model Regression
Conclusion
References
Estimation of Soil Total Nitrogen and Soil Moisture Based on NIRS Technology
Introduction
Materials and Methods
Experiments and Collection
Modeling
Results and Discussion
Data Preprocessing
Estimation of Soil Moisture
Estimation of Soil Total Nitrogen by SVM
Estimation of TN by BP Neural Network
Conclusions
References
The Improved DBSCAN Algorithm Study on Maize Purity Identification
Feature Extraction and Analysis of Image
Image Acquisition and Processing
Color Feature Extraction and Characteristic Vector Selection
The Corn Purity Identification Based on the Farthest First Traversal (FFT) Optimization DBSCAN
Data Optimization
DBSCAN Algorithm
Local Clustering Merger
Experimental Results and Analysis
Conclusions
References
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Computer and Computing Technologies in Agriculture

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