The execution process of satellite-ground clock synchronization and ephemeris uploading in the system is analyzed,as well as their characterized operation and their relationship.Based on the analysis of the scheduling...The execution process of satellite-ground clock synchronization and ephemeris uploading in the system is analyzed,as well as their characterized operation and their relationship.Based on the analysis of the scheduling goal and constraint character,a heuristics rule-based multi-stage link scheduling algorithm was put forward.The algorithm distinguishes the on-off-frontier satellites from the others and schedules them by turns.The paper presented the main flow as well as the detailed design of the rule.Finally based on the current COMPASS global system,some typical resources and constraints are selected to generate an instance.Then the comparison analysis between the heuristics scheduling algorithm and three other traditional scheduling strategies are carried out.The result shows the validity and reasonability of the multi-stage strategy.展开更多
This article firstly described the related definition and technology of Ajax. Combined with Freemarker template engine with Spring and Hibernate framework technology to generate a page view, put forward the FSH the fr...This article firstly described the related definition and technology of Ajax. Combined with Freemarker template engine with Spring and Hibernate framework technology to generate a page view, put forward the FSH the framework of a complete program, and realize upload with progress bar display.展开更多
REMEMBER the days when people used to have a phone, a computer and a camera？ I do - simply because it wasn＇t that long ago. However, as technology hurtles along at the speed of light, it might have escaped some peo...REMEMBER the days when people used to have a phone, a computer and a camera？ I do - simply because it wasn＇t that long ago. However, as technology hurtles along at the speed of light, it might have escaped some people＇s attention that all these three devices now come together in the form of a smartphone, There＇s no need to carry all three devices when visiting a tourist site or monument - your handy smartphone can take a picture, log on to the Internet to post your picture on social media, and then use the calling function to tell your friends about the pictures you＇ve just posted.展开更多
Currently,knowledge-based systems are generally updated manually,resulting in long cycles,low efficiency,and difficulty in ensuring comprehensive and systematic supplementary content.To address this issue,a knowledge-...Currently,knowledge-based systems are generally updated manually,resulting in long cycles,low efficiency,and difficulty in ensuring comprehensive and systematic supplementary content.To address this issue,a knowledge-based system automatic updating method based on webpage information and user files is proposed for combine harvesters.The knowledge storage structure in an electronic warehouse is analyzed,and knowledge and data types are determined.A crawler designed to locate the combine harvester-related information in the target webpage realizes the acquisition and sorting of webpage knowledge and data.The type of file uploaded by the user is set based on the knowledge base and data type;the content of the user file is extracted and filtered,and the knowledge and data of the knowledge-based system are user-defined.The organized knowledge and data are stored or updated in the knowledge base to achieve automatic updating of the knowledge-based system based on webpage information and user files.The test results show that based on user file updates,the knowledge and data of the knowledge-based system can be customized according to user needs.This meets user requirements and allows for effective automatic updates based on webpages after automatic updating of the knowledge base based on webpages.After the automatic updating of the knowledge base based on webpage information is triggered,the knowledge and data from the three webpages that were initially crawled and read are automatically updated to the knowledge base in 5.265 s.Realizing the automatic updating of knowledge and data can shorten the updating period,maintain the effectiveness and practicability of the knowledge-based system,ensure the scientific and advanced nature of the intelligent design process,and provide technical models and methods for the knowledge collection of similar knowledge-based systems.展开更多
基金National Natural Science Foundations of China(Nos.71201171,71501179)
文摘The execution process of satellite-ground clock synchronization and ephemeris uploading in the system is analyzed,as well as their characterized operation and their relationship.Based on the analysis of the scheduling goal and constraint character,a heuristics rule-based multi-stage link scheduling algorithm was put forward.The algorithm distinguishes the on-off-frontier satellites from the others and schedules them by turns.The paper presented the main flow as well as the detailed design of the rule.Finally based on the current COMPASS global system,some typical resources and constraints are selected to generate an instance.Then the comparison analysis between the heuristics scheduling algorithm and three other traditional scheduling strategies are carried out.The result shows the validity and reasonability of the multi-stage strategy.
文摘This article firstly described the related definition and technology of Ajax. Combined with Freemarker template engine with Spring and Hibernate framework technology to generate a page view, put forward the FSH the framework of a complete program, and realize upload with progress bar display.
文摘REMEMBER the days when people used to have a phone, a computer and a camera？ I do - simply because it wasn＇t that long ago. However, as technology hurtles along at the speed of light, it might have escaped some people＇s attention that all these three devices now come together in the form of a smartphone, There＇s no need to carry all three devices when visiting a tourist site or monument - your handy smartphone can take a picture, log on to the Internet to post your picture on social media, and then use the calling function to tell your friends about the pictures you＇ve just posted.
基金supported by the"Suqian Talent"Xiongying Program for Educational Innovation Talents Project(Grant No.SQXY202431)the National Key Research and Development Program of China(Grant No.2017YFD0700100).
文摘Currently,knowledge-based systems are generally updated manually,resulting in long cycles,low efficiency,and difficulty in ensuring comprehensive and systematic supplementary content.To address this issue,a knowledge-based system automatic updating method based on webpage information and user files is proposed for combine harvesters.The knowledge storage structure in an electronic warehouse is analyzed,and knowledge and data types are determined.A crawler designed to locate the combine harvester-related information in the target webpage realizes the acquisition and sorting of webpage knowledge and data.The type of file uploaded by the user is set based on the knowledge base and data type;the content of the user file is extracted and filtered,and the knowledge and data of the knowledge-based system are user-defined.The organized knowledge and data are stored or updated in the knowledge base to achieve automatic updating of the knowledge-based system based on webpage information and user files.The test results show that based on user file updates,the knowledge and data of the knowledge-based system can be customized according to user needs.This meets user requirements and allows for effective automatic updates based on webpages after automatic updating of the knowledge base based on webpages.After the automatic updating of the knowledge base based on webpage information is triggered,the knowledge and data from the three webpages that were initially crawled and read are automatically updated to the knowledge base in 5.265 s.Realizing the automatic updating of knowledge and data can shorten the updating period,maintain the effectiveness and practicability of the knowledge-based system,ensure the scientific and advanced nature of the intelligent design process,and provide technical models and methods for the knowledge collection of similar knowledge-based systems.
