The delegating private quantum computation(DQC)protocol with the universal quantum gate set{X,Z,H,P,R,CNOT}was firstly proposed by Broadbent et al.[Broadbent(2015)],and then Tan et al.[Tan and Zhou(2017)]tried to put ...The delegating private quantum computation(DQC)protocol with the universal quantum gate set{X,Z,H,P,R,CNOT}was firstly proposed by Broadbent et al.[Broadbent(2015)],and then Tan et al.[Tan and Zhou(2017)]tried to put forward a half-blind DQC protocol(HDQC)with another universal set{H,P,CNOT,T}.However,the decryption circuit of Toffoli gate(i.e.T)is a little redundant,and Tan et al.’s protocol[Tan and Zhou(2017)]exists the information leak.In addition,both of these two protocols just focus on the blindness of data(i.e.the client’s input and output),but do not consider the blindness of computation(i.e.the delegated quantum operation).For solving these problems,we propose a full-blind DQC protocol(FDQC)with quantum gate set{H,P,CNOT,T},where the desirable delegated quantum operation,one of{H,P,CNOT,T},is replaced by a fixed sequence(H,P,CZ,CNOT,T)to make the computation blind,and the decryption circuit of Toffoli gate is also optimized.Analysis shows that our protocol can not only correctly perform any delegated quantum computation,but also holds the characteristics of data blindness and computation blindness.展开更多
To advance the field of science and technology,we need to revitalize the development of science and technology through innovation.The development of science and technology has many beneficial implications on the revit...To advance the field of science and technology,we need to revitalize the development of science and technology through innovation.The development of science and technology has many beneficial implications on the revitalization of the country.For this reason,universities in China should give full attention to their role as the main propeller of science and technology.“Streamlining administration,delegating powers,improving regulation,and strengthening services”is a policy issued by the Chinese government for the management of science and technology funds in colleges and universities.Based on the policy of“streamlining administration,delegating powers,improving regulation,and strengthening services,”colleges and universities must optimize the management of science and technology funds for their efficient use.In this paper,we analyzed the importance of the policy and put forward an effective management strategy,aiming to improve the management of science and technology funds in colleges and universities.展开更多
Prepared with concrete and pragmatic questions,members of a media delegation from the Republic of the Congo toured the cities of Yunfu and Zhaoqing in Guangdong Province from 16 to 22 November 2025.They visited produc...Prepared with concrete and pragmatic questions,members of a media delegation from the Republic of the Congo toured the cities of Yunfu and Zhaoqing in Guangdong Province from 16 to 22 November 2025.They visited production workshops,explored research institutes,toured beautiful villages and discovered archaeological sites,searching for the keys to Chinese modernisation in its many dimensions.展开更多
To solve the challenges of connecting and coordinating multiple platforms in the automotive industry and to enhance collaboration among different participants,this research focuses on addressing the complex supply rel...To solve the challenges of connecting and coordinating multiple platforms in the automotive industry and to enhance collaboration among different participants,this research focuses on addressing the complex supply relationships in the automotive market,improving data sharing and interactions across various platforms,and achieving more detailed integration of data and operations.We propose a trust evaluation permission delegation method based on the automotive industry chain.The proposed method combines smart contracts with trust evaluation mechanisms,dynamically calculating the trust value of users based on the historical behavior of the delegated entity,network environment,and other factors to avoid malicious node attacks during the permission delegation process.We also introduce strict control over the cross-domain permission granting and revocation mechanisms to manage the delegation path,prevent information leakage caused by malicious node interception,and effectively protect data integrity and privacy.Experimental analysis shows that this method meets the realtime requirements of collaborative interaction in the automotive industry chain and provides a feasible solution to permission delegation issues in the automotive industry chain,offering dynamic flexibility in authorization and scalability compared to most existing solutions.展开更多
At the invitation of the Friedrich Ebert Foundation(Friedrich-Ebert-Stiftung),the Thai-Chinese Culture and Economy Association and the Viet Nam Union of Friendship Organisations,a CAFIU delegation headed by President ...At the invitation of the Friedrich Ebert Foundation(Friedrich-Ebert-Stiftung),the Thai-Chinese Culture and Economy Association and the Viet Nam Union of Friendship Organisations,a CAFIU delegation headed by President Ji Bingxuan,also Vice-Chairperson of the Standing Committee of the 13th National People's Congress of China visited Germany,Thailand and Vietnam from 26 November to 5 December 2024.展开更多
The G20 Youth Summit(Y20)took place in Johannesburg,South Africa,from 18 to 23 August.Sun Ruoshui,a research assistant from the Institute of Climate Change and Sustainable Development,Tsinghua University,was appointed...The G20 Youth Summit(Y20)took place in Johannesburg,South Africa,from 18 to 23 August.Sun Ruoshui,a research assistant from the Institute of Climate Change and Sustainable Development,Tsinghua University,was appointed by the All-China Youth Federation to represent China in the discussions on Climate and Environmental Sustainability.Specialising in global climate governance,international climate negotiation and climate policy,Sun has previously served as a member of the Chinese delegation to the 2023 United Nations Climate Change Conference(COP28)and 2024 Bonn Subsidiary Bodies Meeting.展开更多
In a peach orchard in Lyuxiang Town,Jinshan District,Shanghai,youth delegates from 13 countries,officials from the Food and Agriculture Organization of the United Nations(FAO),and agricultural heritage experts were im...In a peach orchard in Lyuxiang Town,Jinshan District,Shanghai,youth delegates from 13 countries,officials from the Food and Agriculture Organization of the United Nations(FAO),and agricultural heritage experts were impressed by sweet and juicy Jinshan flat peaches.Jinshan has a history of flat peach cultivation that spans hundreds of years dating back to the Yuan Dynasty(1271-1368).展开更多
On 22 January 2025,the delegation of Harvard Students'China Trek 2025 arrived in Hangzhou.Forty-six students from Harvard Kennedy School,representing 20 countries,engaged in in-depth exchanges with Chinese and int...On 22 January 2025,the delegation of Harvard Students'China Trek 2025 arrived in Hangzhou.Forty-six students from Harvard Kennedy School,representing 20 countries,engaged in in-depth exchanges with Chinese and international youth delegates,embarking on a journey promoting mutual learning and strengthening friendship.展开更多
From 9 to 12 March 2025,representatives of China NGO Network for International Exchanges(CNIE)attended the 69th Session of the United Nations Commission on the Status of Women(CSW 69)in New York,USA.
From May 14 to 17,2025,at the invitation of the Hellenic Clothing Industry Association and the Greek Enterprise Bureau,Sun Ruizhe,president of the China National Textile and Apparel Council(hereinafter referred to as ...From May 14 to 17,2025,at the invitation of the Hellenic Clothing Industry Association and the Greek Enterprise Bureau,Sun Ruizhe,president of the China National Textile and Apparel Council(hereinafter referred to as CNTAC),led a team to visit Greece to carry out industrial communication and economic cooperation.This visit not only deepened the mutual trust and cooperation in the textile industry between China and Greece but also opened up new pathways for bilateral industrial connections.展开更多
At the invitation of the Madagascar-China Friendship Group of the National Assembly of Madagascar,Li Jun,former Vice-Minister of the International Department of the CPC Central Committee and Vice-President of CNIE,led...At the invitation of the Madagascar-China Friendship Group of the National Assembly of Madagascar,Li Jun,former Vice-Minister of the International Department of the CPC Central Committee and Vice-President of CNIE,led a sixmember delegation to visit Madagascar from May 11th to 14th,2025.During the delegation's visit,Justin Tokely,Speaker of the National Assembly of Madagascar and Razafinarivo Augustin,Deputy Speaker met with the delegation.The delegation exchanged views with Rafidi,Director of the Madagascar Economic Development Bureau as well as leaders of local NGOs on Belt and Road cooperation and peopleto-people exchanges.展开更多
传统的MVC模式在表示层和业务逻辑层存在大量的数据交换,降低了系统的效率,讨论了在软件开发过程中具体存在的问题,分析了Session Fa ade和Business Delegate两种设计模式的特点,提出将这2种模式和MVC模式结合,形成完善的J2EE开发模式....传统的MVC模式在表示层和业务逻辑层存在大量的数据交换,降低了系统的效率,讨论了在软件开发过程中具体存在的问题,分析了Session Fa ade和Business Delegate两种设计模式的特点,提出将这2种模式和MVC模式结合,形成完善的J2EE开发模式.同时,对J2EE架构中的数据持久层进行分析和改进,提出用DAO类和DAO-Factory类实现数据持久层的方法,形成更完善的J2EE体系结构.展开更多
In recent years, opportunities for using cloud services as computing resources have increased and there is a concern that private information may be leaked when processes data. The data processing while maintaining co...In recent years, opportunities for using cloud services as computing resources have increased and there is a concern that private information may be leaked when processes data. The data processing while maintaining confidentiality is called secret computation. Cryptosystems can add and multiply plaintext through the manipulation of ciphertexts of homomorphic cryptosystems, but most of them have restrictions on the number of multiplications that can be performed. Among the different types of cryptosystems, fully homomorphic encryption can perform arbitrary homomorphic addition and multiplication, but it takes a long time to eliminate the limitation on the number of homomorphic operations and to carry out homomorphic multiplication. Therefore, in this paper, we propose an arithmetic processing method that can perform an arbitrary number of homomorphic addition and multiplication operations based on ElGamal cryptosystem. The results of experiments comparing with the proposed method with HElib in which the BGV scheme of fully homomorphic encryption is implemented showed that, although the processing time for homomorphic addition per ciphertext increased by about 35%, the processing time for homomorphic multiplication was reduced to about 1.8%, and the processing time to calculate the statistic (variance) had approximately a 15% reduction.展开更多
基金This work is supported by the National Nature Science Foundation of China(Grant Nos.61502101 and 61501247)the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20171458)+4 种基金the Six Talent Peaks Project of Jiangsu Province,China(Grant No.2015-XXRJ-013)the Natural science Foundation for colleges and universities of Jiangsu Province,China(Grant No.16KJB520030)the Research Innovation Program for College Graduates of Jiangsu Province,China(Grant No.KYCX17_0902)the Practice Innovation Training Program Projects for the Jiangsu College Students(Grant No.201810300016Z)and the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).
文摘The delegating private quantum computation(DQC)protocol with the universal quantum gate set{X,Z,H,P,R,CNOT}was firstly proposed by Broadbent et al.[Broadbent(2015)],and then Tan et al.[Tan and Zhou(2017)]tried to put forward a half-blind DQC protocol(HDQC)with another universal set{H,P,CNOT,T}.However,the decryption circuit of Toffoli gate(i.e.T)is a little redundant,and Tan et al.’s protocol[Tan and Zhou(2017)]exists the information leak.In addition,both of these two protocols just focus on the blindness of data(i.e.the client’s input and output),but do not consider the blindness of computation(i.e.the delegated quantum operation).For solving these problems,we propose a full-blind DQC protocol(FDQC)with quantum gate set{H,P,CNOT,T},where the desirable delegated quantum operation,one of{H,P,CNOT,T},is replaced by a fixed sequence(H,P,CZ,CNOT,T)to make the computation blind,and the decryption circuit of Toffoli gate is also optimized.Analysis shows that our protocol can not only correctly perform any delegated quantum computation,but also holds the characteristics of data blindness and computation blindness.
文摘To advance the field of science and technology,we need to revitalize the development of science and technology through innovation.The development of science and technology has many beneficial implications on the revitalization of the country.For this reason,universities in China should give full attention to their role as the main propeller of science and technology.“Streamlining administration,delegating powers,improving regulation,and strengthening services”is a policy issued by the Chinese government for the management of science and technology funds in colleges and universities.Based on the policy of“streamlining administration,delegating powers,improving regulation,and strengthening services,”colleges and universities must optimize the management of science and technology funds for their efficient use.In this paper,we analyzed the importance of the policy and put forward an effective management strategy,aiming to improve the management of science and technology funds in colleges and universities.
文摘Prepared with concrete and pragmatic questions,members of a media delegation from the Republic of the Congo toured the cities of Yunfu and Zhaoqing in Guangdong Province from 16 to 22 November 2025.They visited production workshops,explored research institutes,toured beautiful villages and discovered archaeological sites,searching for the keys to Chinese modernisation in its many dimensions.
基金funded by the Sichuan Science and Technology Program,Grant Nos.2024NSFSC0515,2024ZHCG0182 and MZGC20230013.
文摘To solve the challenges of connecting and coordinating multiple platforms in the automotive industry and to enhance collaboration among different participants,this research focuses on addressing the complex supply relationships in the automotive market,improving data sharing and interactions across various platforms,and achieving more detailed integration of data and operations.We propose a trust evaluation permission delegation method based on the automotive industry chain.The proposed method combines smart contracts with trust evaluation mechanisms,dynamically calculating the trust value of users based on the historical behavior of the delegated entity,network environment,and other factors to avoid malicious node attacks during the permission delegation process.We also introduce strict control over the cross-domain permission granting and revocation mechanisms to manage the delegation path,prevent information leakage caused by malicious node interception,and effectively protect data integrity and privacy.Experimental analysis shows that this method meets the realtime requirements of collaborative interaction in the automotive industry chain and provides a feasible solution to permission delegation issues in the automotive industry chain,offering dynamic flexibility in authorization and scalability compared to most existing solutions.
文摘At the invitation of the Friedrich Ebert Foundation(Friedrich-Ebert-Stiftung),the Thai-Chinese Culture and Economy Association and the Viet Nam Union of Friendship Organisations,a CAFIU delegation headed by President Ji Bingxuan,also Vice-Chairperson of the Standing Committee of the 13th National People's Congress of China visited Germany,Thailand and Vietnam from 26 November to 5 December 2024.
文摘The G20 Youth Summit(Y20)took place in Johannesburg,South Africa,from 18 to 23 August.Sun Ruoshui,a research assistant from the Institute of Climate Change and Sustainable Development,Tsinghua University,was appointed by the All-China Youth Federation to represent China in the discussions on Climate and Environmental Sustainability.Specialising in global climate governance,international climate negotiation and climate policy,Sun has previously served as a member of the Chinese delegation to the 2023 United Nations Climate Change Conference(COP28)and 2024 Bonn Subsidiary Bodies Meeting.
文摘In a peach orchard in Lyuxiang Town,Jinshan District,Shanghai,youth delegates from 13 countries,officials from the Food and Agriculture Organization of the United Nations(FAO),and agricultural heritage experts were impressed by sweet and juicy Jinshan flat peaches.Jinshan has a history of flat peach cultivation that spans hundreds of years dating back to the Yuan Dynasty(1271-1368).
文摘On 22 January 2025,the delegation of Harvard Students'China Trek 2025 arrived in Hangzhou.Forty-six students from Harvard Kennedy School,representing 20 countries,engaged in in-depth exchanges with Chinese and international youth delegates,embarking on a journey promoting mutual learning and strengthening friendship.
文摘From 9 to 12 March 2025,representatives of China NGO Network for International Exchanges(CNIE)attended the 69th Session of the United Nations Commission on the Status of Women(CSW 69)in New York,USA.
文摘From May 14 to 17,2025,at the invitation of the Hellenic Clothing Industry Association and the Greek Enterprise Bureau,Sun Ruizhe,president of the China National Textile and Apparel Council(hereinafter referred to as CNTAC),led a team to visit Greece to carry out industrial communication and economic cooperation.This visit not only deepened the mutual trust and cooperation in the textile industry between China and Greece but also opened up new pathways for bilateral industrial connections.
文摘At the invitation of the Madagascar-China Friendship Group of the National Assembly of Madagascar,Li Jun,former Vice-Minister of the International Department of the CPC Central Committee and Vice-President of CNIE,led a sixmember delegation to visit Madagascar from May 11th to 14th,2025.During the delegation's visit,Justin Tokely,Speaker of the National Assembly of Madagascar and Razafinarivo Augustin,Deputy Speaker met with the delegation.The delegation exchanged views with Rafidi,Director of the Madagascar Economic Development Bureau as well as leaders of local NGOs on Belt and Road cooperation and peopleto-people exchanges.
文摘传统的MVC模式在表示层和业务逻辑层存在大量的数据交换,降低了系统的效率,讨论了在软件开发过程中具体存在的问题,分析了Session Fa ade和Business Delegate两种设计模式的特点,提出将这2种模式和MVC模式结合,形成完善的J2EE开发模式.同时,对J2EE架构中的数据持久层进行分析和改进,提出用DAO类和DAO-Factory类实现数据持久层的方法,形成更完善的J2EE体系结构.
文摘In recent years, opportunities for using cloud services as computing resources have increased and there is a concern that private information may be leaked when processes data. The data processing while maintaining confidentiality is called secret computation. Cryptosystems can add and multiply plaintext through the manipulation of ciphertexts of homomorphic cryptosystems, but most of them have restrictions on the number of multiplications that can be performed. Among the different types of cryptosystems, fully homomorphic encryption can perform arbitrary homomorphic addition and multiplication, but it takes a long time to eliminate the limitation on the number of homomorphic operations and to carry out homomorphic multiplication. Therefore, in this paper, we propose an arithmetic processing method that can perform an arbitrary number of homomorphic addition and multiplication operations based on ElGamal cryptosystem. The results of experiments comparing with the proposed method with HElib in which the BGV scheme of fully homomorphic encryption is implemented showed that, although the processing time for homomorphic addition per ciphertext increased by about 35%, the processing time for homomorphic multiplication was reduced to about 1.8%, and the processing time to calculate the statistic (variance) had approximately a 15% reduction.
