Traditional system based on the current form of distance education network technology does not support the existence of dynamic multimedia data and real-time streaming data,as well as the existence of streaming media ...
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Traditional system based on the current form of distance education network technology does not support the existence of dynamic multimedia data and real-time streaming data,as well as the existence of streaming media technology in the server bottleneck *** key technologies of streaming media digital resources transmission based on CDN(Content Delivery Network) and P2P(peer-to-peer) is discussed in the paper,and the P2 P core algorithm is optimized,the CDN network deployment of the program and the edge server deployment strategies are discussed,which can address the situation of network congestion and improve user access to video and web site response time.
In this paper,we adopt the QGWA-03 plant audio apparatus to investigate the sound effects on strawberry in the leaf area,the photosynthetic characteristics and other physiological *** was found that when there were no...
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In this paper,we adopt the QGWA-03 plant audio apparatus to investigate the sound effects on strawberry in the leaf area,the photosynthetic characteristics and other physiological *** was found that when there were no significant differences between the circumstances of the two sunlight greenhouses,the strawberry after the sound wave stimulation grew stronger than in the control and its leaf were deeper green,and shifted to an earlier time about one week to blossom and bear *** was also found that the resistance of strawberry against disease and insect pest were *** experiment results show that sound wave stimulation can certainly promote the growth of plants.
The industry of dried tofu products wants to achieve breakthrough,the key lies in developing efficient processing *** equipment of dried tofu has been mostly designed according to the line- "manual design(some wi...
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The industry of dried tofu products wants to achieve breakthrough,the key lies in developing efficient processing *** equipment of dried tofu has been mostly designed according to the line- "manual design(some with a CAD)- prototype production- prototype testing- design modification".However this way not only gets a high cost of research,but also a long *** used virtual prototyping technology,at first,according to the design requirements,created three-dimensional modeling by using Pro/E software;at last,made the feasibility analysis of kinematics and dynamics by using of ADAMS *** optimization design,analysis and control of cost,it had several characters as follows,simple machine,low cost,high productivity,it had great significance to mechanization and industrialization of pressing equipment of dried tofu.
This article analyzes the Internet basic theory,the network foundation environment and the user behavior change and so on,Which analyzes the development tendency of existing partial Internet products in the future Int...
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This article analyzes the Internet basic theory,the network foundation environment and the user behavior change and so on,Which analyzes the development tendency of existing partial Internet products in the future Internet *** article also hot on the concept of cloud computing,Demonstrates the relation between Cloud Computing and Web 2.0 from the angle of Cloud-based end-user applications,The possibly killing application in the future was discussed.
According to the features of headland turning,new path planning and headland turning control algorithms for autonomous agricultural machine were presented in this *** turning path planning considered both the minimum ...
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According to the features of headland turning,new path planning and headland turning control algorithms for autonomous agricultural machine were presented in this *** turning path planning considered both the minimum turning radius and headland space was created by applying three straight lines.A path tracking algorithm based on the improved pure pursuit model was also *** study used the BP neutral network to implement the dynamical look-ahead distance control for the improved pure pursuit *** on simplified bicycle kinematics model parameters,MATLAB/Simulink simulation results showed that the path planning algorithm were simple,occupied smaE headland space while still had a high tracking *** control method is feasible and practical.
After several significant food safety incident,global food industry and governments in many countries are putting increasing emphasis on establishment of food traceability *** traceability has become an effective way ...
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After several significant food safety incident,global food industry and governments in many countries are putting increasing emphasis on establishment of food traceability *** traceability has become an effective way in food quality and safety *** traceability system for quality safety of cereal and oil products was designed and implemented with HACCP and FMECA method,encoding,information processing,and hardware R&D technology etc,according to the whole supply chain of cereal and oil *** indicated that the system provide not only the management in origin,processing,circulating and consuming for enterprise,but also tracing service for customers and supervisor by means of telephone,internet,SMS,touch machine and mobile terminal.
Wetland is a multifunctional ecosystem in the earth,wetlands possess irreplaceable and enormous ecological functions and serve as an essential life supporting system,how to apply the new and high technology to the stu...
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Wetland is a multifunctional ecosystem in the earth,wetlands possess irreplaceable and enormous ecological functions and serve as an essential life supporting system,how to apply the new and high technology to the study of wetland has become the key point in wetland study area in our ***,GIS and GPS technology provide a new method for resource and ecological environment *** this paper,the problem and development trend of 3S technology are *** of 3S technique in the study of wetland environment of Dongting Lake are *** wetland monitor ways and technique route are *** beach and water area information were *** dynamic changes of water were evaluated objective and ***,we point out the difficulties of wetland monitor of Dongting Lake.
Geostatistics combined with GIS spatial technology was applied to analyze the time and spatial variability of pH in topsoil(0-20cm) for planted tobacco region in Sanmenxia *** results indicated that the pH value ran...
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Geostatistics combined with GIS spatial technology was applied to analyze the time and spatial variability of pH in topsoil(0-20cm) for planted tobacco region in Sanmenxia *** results indicated that the pH value range form 6.5 to 8.8 and meet to the need of produce high quality tobacco,but the pH value of partial region is *** pH value accord with logarithm normal distribution,variance coefficient is 15.2%and 4.5%of 2002 and 2007 year *** semivariogram of pH was best described by the exponential model and spatial heterogeneity of pH were 55.77 km and 92.39 *** Kriging interpolated method was applied to calculated the unobserved points and was used to generate the spatial and discrepancy map,analyzed the reason of the pH value increase and the method to improve *** research supply important method of the Sanmenxia high quality tobacco produce.
A novel nozzle controller of spraying robot aiming toward crop-rows based on fuzzy control theory was studied in this paper to solve the shortcomings of existing nozzle control system,such as the long regulation time,...
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A novel nozzle controller of spraying robot aiming toward crop-rows based on fuzzy control theory was studied in this paper to solve the shortcomings of existing nozzle control system,such as the long regulation time,the higher overshoot and so *** new fuzzy controller mainly consists of fuzzification interface,denazification interface,rule-base and inference *** the actual application,the fuzzy controller was designed as a 2-inputs&1-output closed-loop *** inputs are the distance from nozzle to crop row and its change rate,the output is the control signal to the execution *** on the design project,we selected the FMC chip NLX230,the EMCU chip AT89S52 and the EEPROM chip AT93C57 to make the fuzzy *** results show that the project is workable and efficient,it can solve the shortcomings of existing controller perfectly and the control efficiency can be improved greatly.
In the process of realization Internet-based visualization system of the protein molecules,system needs to allow users to use the system to observe the molecular structure of the local computer,that is,customers can g...
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In the process of realization Internet-based visualization system of the protein molecules,system needs to allow users to use the system to observe the molecular structure of the local computer,that is,customers can generate the three-dimensional graphics from PDB file on the client *** requires Applet access to local file,related to the Applet security restrictions *** this paper include two realization methods:*** such as signature tools,key management tools and Policy Editor tools provided by the JDK to digital signature and authentication for Java Applet,breakthrough certain security restrictions in the *** the use of Servlet agent implement indirect access data methods,breakthrough the traditional Java Virtual Machine sandbox model restriction of Applet *** two ways can break through the Applet's security restrictions,but each has its own strengths.
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