To improve the recognition ability of communication jamming signals,Siamese Neural Network-based Open World Recognition(SNNOWR)is proposed.The algorithm can recognize known jamming classes,detect new(unknown)jamming c...To improve the recognition ability of communication jamming signals,Siamese Neural Network-based Open World Recognition(SNNOWR)is proposed.The algorithm can recognize known jamming classes,detect new(unknown)jamming classes,and unsupervised cluseter new classes.The network of SNN-OWR is trained supervised with paired input data consisting of two samples from a known dataset.On the one hand,the network is required to have the ability to distinguish whether two samples are from the same class.On the other hand,the latent distribution of known class is forced to approach their own unique Gaussian distribution,which is prepared for the subsequent open set testing.During the test,the unknown class detection process based on Gaussian probability density function threshold is designed,and an unsupervised clustering algorithm of the unknown jamming is realized by using the prior knowledge of known classes.The simulation results show that when the jamming-to-noise ratio is more than 0d B,the accuracy of SNN-OWR algorithm for known jamming classes recognition,unknown jamming detection and unsupervised clustering of unknown jamming is about 95%.This indicates that the SNN-OWR algorithm can make the effect of the recognition of unknown jamming be almost the same as that of known jamming.展开更多
The 2023 World Robot Conference was held at Beiren Etrong International Exhibition&Convention Centre of the Economic and Technological Development Zone in Beijing.Themed"Spurring Innovation for the Future&quo...The 2023 World Robot Conference was held at Beiren Etrong International Exhibition&Convention Centre of the Economic and Technological Development Zone in Beijing.Themed"Spurring Innovation for the Future",the Conference was hosted by the People's Government of Beijing Municipality,the Ministry of Industry and Information Technology of China and China Association for Science and Technology,organised by Bejing Institute of Electronics.展开更多
Xinjiang is a good place, with pastureland to the north and south of the Tianshan MountainThe Gobi Desert has been changed into fertile fields, irrigated by melting snows.
The goal of economic opening to the outside world is an important basis for formulating and implementing the policy of opening. Different economic development strategies have different requirements for the degree of e...The goal of economic opening to the outside world is an important basis for formulating and implementing the policy of opening. Different economic development strategies have different requirements for the degree of economic opening to the outside world. Guizhou should implement the open economy and adopt the export-oriented development strategy, which objectively requires Guizhou to gradually improve the degree of opening to the outside world.展开更多
Under the guidance of Deng Xiao-ping’s strategic think-ing of openning to the outside world, the structure of om-nibearing openness has basically taken shape in China. Follow-
Wenzhou obtained the right to handle import and export trade in 1988. In 1993 its export volume was US$ 100 million, including US$52 million earned by foreign trade corporations. It has established trade relations wit...Wenzhou obtained the right to handle import and export trade in 1988. In 1993 its export volume was US$ 100 million, including US$52 million earned by foreign trade corporations. It has established trade relations with over 60 countries and regions.展开更多
Mr. Li Lanqing, Vice Premier of the State Council, expounded on China’s economy heading towards the 21st century,at the 32nd ICC World Congress. He said: China is greeting the 19th year of its reform and opening to t...Mr. Li Lanqing, Vice Premier of the State Council, expounded on China’s economy heading towards the 21st century,at the 32nd ICC World Congress. He said: China is greeting the 19th year of its reform and opening to the outside world. In the past 18 years, especially in the 1990s,China’s economy, as an integral part of the world economy, has assumed three interrelated new features, under the circumstances of speeding up the development, deepening the reform, and expanding the opening. 1. Lasting trend for sustained and rapid economic growth. China has 1.2 billion people with everrising income and consumption levels and huge market demand, and the Chinese people have the habit of saving. So there are large amounts of bank deposits to展开更多
Expanding its opening is a major eventin the economic development ofSichuan, a big hinterland province inChina. Sichuan will adhere to the guidelineof promoting development by opening, andpromoting further progress by...Expanding its opening is a major eventin the economic development ofSichuan, a big hinterland province inChina. Sichuan will adhere to the guidelineof promoting development by opening, andpromoting further progress by exploitation,and make full use of two resources, twomarkets at home and abroad and becomeactively involved in exchange and competitionat home and abroad. It will further strengthenthe work of foreign trade, foreign capital,foreign economy, foreign affairs and tradingport, and by the turn of this century, moredevelopment will be made in the foreign-oriented economy of the whole province,creating a new way for the hinterland展开更多
Organized by the Standard Administration of China (SAC), the plenary meeting on publicity of the 2005 World Standards Day was held on October 14, 2005 at the Great Hall of People. Surrounding the theme of this year...Organized by the Standard Administration of China (SAC), the plenary meeting on publicity of the 2005 World Standards Day was held on October 14, 2005 at the Great Hall of People. Surrounding the theme of this year's World Standards Day - "Standards for a Safer World", the meeting made publicized the status of construction and implementation of the food safety and production safety standard system of our country,the result of clearance on national standards and the announcement of formal operation of the system for online free-of-charge access to the full text of national compulsory standards, and the system for online distribution and service of national standards. Attending the meeting were Li Changjiang, Director of AQSIQ, Li Chuanqing,Party Group Secretary of AQSIQ, Li Zhonghai, Director of SAC, high-ranking officers of relevant departments of the State Council, Chen Xiaohong, Vice-minister of Ministry of Health, Wang Xianzheng, Vice-director of the National General Bureau of Supervision and Administration on Production Safety, and representatives and experts from enterprises of various sectors with a total of over 300 people. The meeting was presided over by Zhang Yanhua, Standing Vice-director of SAC.展开更多
Distinguished guests,Ladies and gentlemen,Dear friends,It gives me great pleasure to meet all of you in Beijing and join you in the 2013"Understanding and Cooperation"Dialogue.Please allow me to begin by ext...Distinguished guests,Ladies and gentlemen,Dear friends,It gives me great pleasure to meet all of you in Beijing and join you in the 2013"Understanding and Cooperation"Dialogue.Please allow me to begin by extending my warmest congratulations to the opening of this Dialogue,and my展开更多
基金supported by the National Natural Science Foundation of China(U19B2016)Zhejiang Provincial Key Lab of Data Storage and Transmission Technology,Hangzhou Dianzi University。
文摘To improve the recognition ability of communication jamming signals,Siamese Neural Network-based Open World Recognition(SNNOWR)is proposed.The algorithm can recognize known jamming classes,detect new(unknown)jamming classes,and unsupervised cluseter new classes.The network of SNN-OWR is trained supervised with paired input data consisting of two samples from a known dataset.On the one hand,the network is required to have the ability to distinguish whether two samples are from the same class.On the other hand,the latent distribution of known class is forced to approach their own unique Gaussian distribution,which is prepared for the subsequent open set testing.During the test,the unknown class detection process based on Gaussian probability density function threshold is designed,and an unsupervised clustering algorithm of the unknown jamming is realized by using the prior knowledge of known classes.The simulation results show that when the jamming-to-noise ratio is more than 0d B,the accuracy of SNN-OWR algorithm for known jamming classes recognition,unknown jamming detection and unsupervised clustering of unknown jamming is about 95%.This indicates that the SNN-OWR algorithm can make the effect of the recognition of unknown jamming be almost the same as that of known jamming.
文摘The 2023 World Robot Conference was held at Beiren Etrong International Exhibition&Convention Centre of the Economic and Technological Development Zone in Beijing.Themed"Spurring Innovation for the Future",the Conference was hosted by the People's Government of Beijing Municipality,the Ministry of Industry and Information Technology of China and China Association for Science and Technology,organised by Bejing Institute of Electronics.
文摘Xinjiang is a good place, with pastureland to the north and south of the Tianshan MountainThe Gobi Desert has been changed into fertile fields, irrigated by melting snows.
基金Supported by Guizhou Soft Science Project in 2015(2015LSK2012)Major Innovation Support Project of Guizhou Academy of Social Sciences(ZD02)
文摘The goal of economic opening to the outside world is an important basis for formulating and implementing the policy of opening. Different economic development strategies have different requirements for the degree of economic opening to the outside world. Guizhou should implement the open economy and adopt the export-oriented development strategy, which objectively requires Guizhou to gradually improve the degree of opening to the outside world.
文摘Under the guidance of Deng Xiao-ping’s strategic think-ing of openning to the outside world, the structure of om-nibearing openness has basically taken shape in China. Follow-
文摘Wenzhou obtained the right to handle import and export trade in 1988. In 1993 its export volume was US$ 100 million, including US$52 million earned by foreign trade corporations. It has established trade relations with over 60 countries and regions.
文摘Mr. Li Lanqing, Vice Premier of the State Council, expounded on China’s economy heading towards the 21st century,at the 32nd ICC World Congress. He said: China is greeting the 19th year of its reform and opening to the outside world. In the past 18 years, especially in the 1990s,China’s economy, as an integral part of the world economy, has assumed three interrelated new features, under the circumstances of speeding up the development, deepening the reform, and expanding the opening. 1. Lasting trend for sustained and rapid economic growth. China has 1.2 billion people with everrising income and consumption levels and huge market demand, and the Chinese people have the habit of saving. So there are large amounts of bank deposits to
文摘Expanding its opening is a major eventin the economic development ofSichuan, a big hinterland province inChina. Sichuan will adhere to the guidelineof promoting development by opening, andpromoting further progress by exploitation,and make full use of two resources, twomarkets at home and abroad and becomeactively involved in exchange and competitionat home and abroad. It will further strengthenthe work of foreign trade, foreign capital,foreign economy, foreign affairs and tradingport, and by the turn of this century, moredevelopment will be made in the foreign-oriented economy of the whole province,creating a new way for the hinterland
文摘Organized by the Standard Administration of China (SAC), the plenary meeting on publicity of the 2005 World Standards Day was held on October 14, 2005 at the Great Hall of People. Surrounding the theme of this year's World Standards Day - "Standards for a Safer World", the meeting made publicized the status of construction and implementation of the food safety and production safety standard system of our country,the result of clearance on national standards and the announcement of formal operation of the system for online free-of-charge access to the full text of national compulsory standards, and the system for online distribution and service of national standards. Attending the meeting were Li Changjiang, Director of AQSIQ, Li Chuanqing,Party Group Secretary of AQSIQ, Li Zhonghai, Director of SAC, high-ranking officers of relevant departments of the State Council, Chen Xiaohong, Vice-minister of Ministry of Health, Wang Xianzheng, Vice-director of the National General Bureau of Supervision and Administration on Production Safety, and representatives and experts from enterprises of various sectors with a total of over 300 people. The meeting was presided over by Zhang Yanhua, Standing Vice-director of SAC.
文摘Distinguished guests,Ladies and gentlemen,Dear friends,It gives me great pleasure to meet all of you in Beijing and join you in the 2013"Understanding and Cooperation"Dialogue.Please allow me to begin by extending my warmest congratulations to the opening of this Dialogue,and my
