With the rapid advancement in exploring perceptual interactions and digital twins,metaverse technology has emerged to transcend the constraints of space-time and reality,facilitating remote AI-based collaboration.In t...With the rapid advancement in exploring perceptual interactions and digital twins,metaverse technology has emerged to transcend the constraints of space-time and reality,facilitating remote AI-based collaboration.In this dynamic metasystem environment,frequent information exchanges necessitate robust security measures,with Authentication and Key Agreement(AKA)serving as the primary line of defense to ensure communication security.However,traditional AKA protocols fall short in meeting the low-latency requirements essential for synchronous interactions within the metaverse.To address this challenge and enable nearly latency-free interactions,a novel low-latency AKA protocol based on chaotic maps is proposed.This protocol not only ensures mutual authentication of entities within the metasystem but also generates secure session keys.The security of these session keys is rigorously validated through formal proofs,formal verification,and informal proofs.When confronted with the Dolev-Yao(DY)threat model,the session keys are formally demonstrated to be secure under the Real-or-Random(ROR)model.The proposed protocol is further validated through simulations conducted using VMware workstation compiled in HLPSL language and C language.The simulation results affirm the protocol’s effectiveness in resisting well-known attacks while achieving the desired low latency for optimal metaverse interactions.展开更多
Background: When continuous scale measurements are available, agreements between two measuring devices are assessed both graphically and analytically. In clinical investigations, Bland and Altman proposed plotting sub...Background: When continuous scale measurements are available, agreements between two measuring devices are assessed both graphically and analytically. In clinical investigations, Bland and Altman proposed plotting subject-wise differences between raters against subject-wise averages. In order to scientifically assess agreement, Bartko recommended combining the graphical approach with the statistical analytic procedure suggested by Bradley and Blackwood. The advantage of using this approach is that it enables significance testing and sample size estimation. We noted that the direct use of the results of the regression is misleading and we provide a correction in this regard. Methods: Graphical and linear models are used to assess agreements for continuous scale measurements. We demonstrate that software linear regression results should not be readily used and we provided correct analytic procedures. The degrees of freedom of the F-statistics are incorrectly reported, and we propose methods to overcome this problem by introducing the correct analytic form of the F statistic. Methods for sample size estimation using R-functions are also given. Results: We believe that the tutorial and the R-codes are useful tools for testing and estimating agreement between two rating protocols for continuous scale measurements. The interested reader may use the codes and apply them to their available data when the issue of agreement between two raters is the subject of interest.展开更多
In recent decades, international trade has evolved into a complex system of trade barriers to ensure the protection of domestic industry and its workers interests. However as tariffs have fallen and international trad...In recent decades, international trade has evolved into a complex system of trade barriers to ensure the protection of domestic industry and its workers interests. However as tariffs have fallen and international trade tends to be free trade, countries have found another way of protecting domestic industries from foreign competition—non-tariff protection. Among them anti-dumping is the most controversial subject that is involved in the foreign trade. This theme will analyze the reason and effect of growing use anti-dumping measures by countries in recent decades and try to give some possible solutions.展开更多
Although the benefits of China’s trade expansion have been distributed much more broadly than those of some early industrialized nations,China has become the primary target of anti-dumping activities.Being a new and ...Although the benefits of China’s trade expansion have been distributed much more broadly than those of some early industrialized nations,China has become the primary target of anti-dumping activities.Being a new and relatively efficient new rival in the global market may be an important reason for this.On the other hand,China’s development stage and her trade structure also place her in a disadvantageous position when it comes to anti-dumping activities.展开更多
In the run up to the expiry of quota restrictions that had long regulated much of global trade in textiles and clothing, many a pundit predicted widespread recourse to anti-dumping actions.
The president of the National Council of Textile Organizations(NCTO )has written a letter to the Mexican Economic Secretary Hugo Diaz strongly endorsing his country’s decision to seek a World Trade Organization(WTO)
In order to make the quantum key agreement process immune to participant attacks, it is necessary to introduce the authentication in the communication process. A quantum key agreement protocol with identity authentica...In order to make the quantum key agreement process immune to participant attacks, it is necessary to introduce the authentication in the communication process. A quantum key agreement protocol with identity authentication that exploits the measurement correlation of six-particle entangled states is proposed. In contrast to some recently proposed quantum key agreement protocols with authentication, this protocol requires neither a semi-trusted third party nor additional private keys in the authentication process. The entire process of authentication and key agreement can be achieved using only n six-particle entangled states, which saves communication costs and reduces the complexity of the authentication process.Finally, security analysis shows that this scheme is resistant to some important attacks.展开更多
Internet of Medical Things(IoMT)plays an essential role in collecting and managing personal medical data.In recent years,blockchain technology has put power in traditional IoMT systems for data sharing between differe...Internet of Medical Things(IoMT)plays an essential role in collecting and managing personal medical data.In recent years,blockchain technology has put power in traditional IoMT systems for data sharing between different medical institutions and improved the utilization of medical data.However,some problems in the information transfer process between wireless medical devices and mobile medical apps,such as information leakage and privacy disclosure.This paper first designs a cross-device key agreement model for blockchain-enabled IoMT.This model can establish a key agreement mechanism for secure medical data sharing.Meanwhile,a certificateless authenticated key agreement(KA)protocol has been proposed to strengthen the information transfer security in the cross-device key agreement model.The proposed KA protocol only requires one exchange of messages between the two parties,which can improve the protocol execution efficiency.Then,any unauthorized tampering of the transmitted signed message sent by the sender can be detected by the receiver,so this can guarantee the success of the establishment of a session key between the strange entities.The blockchain ledger can ensure that the medical data cannot be tampered with,and the certificateless mechanism can weaken the key escrow problem.Moreover,the security proof and performance analysis are given,which show that the proposed model and KA protocol are more secure and efficient than other schemes in similar literature.展开更多
Under the pressure of the anti- dumping investigations on silk fabrics launched by the Indian government, the China Chamber of Commerce for Import & Export of Textiles (CCCT) announced that it has decided not to h...Under the pressure of the anti- dumping investigations on silk fabrics launched by the Indian government, the China Chamber of Commerce for Import & Export of Textiles (CCCT) announced that it has decided not to hold the Silk Trade Fair (Autumn) this year, in order to avoid the negative effects the case might bring.展开更多
With the exponential growth of intelligent Internet of Things(IoT)applications,Cloud-Edge(CE)paradigm is emerging as a solution that facilitates resource-efficient and timely services.However,it remains an underlying ...With the exponential growth of intelligent Internet of Things(IoT)applications,Cloud-Edge(CE)paradigm is emerging as a solution that facilitates resource-efficient and timely services.However,it remains an underlying issue that frequent end-edgecloud communication is over a public or adversarycontrolled channel.Additionally,with the presence of resource-constrained devices,it’s imperative to conduct the secure communication mechanism,while still guaranteeing efficiency.Physical unclonable functions(PUF)emerge as promising lightweight security primitives.Thus,we first construct a PUF-based security mechanism for vulnerable IoT devices.Further,a provably secure and PUF-based authentication key agreement scheme is proposed for establishing the secure channel in end-edge-cloud empowered IoT,without requiring pre-loaded master keys.The security of our scheme is rigorously proven through formal security analysis under the random oracle model,and security verification using AVISPA tool.The comprehensive security features are also elaborated.Moreover,the numerical results demonstrate that the proposed scheme outperforms existing related schemes in terms of computational and communication efficiency.展开更多
The past years saw an increased cases of anti-dumping on China mostly from the developed countries,some from developing countries.But Pakistan,a friendly neighbor to China,recently adds up to that list of ranks for an...The past years saw an increased cases of anti-dumping on China mostly from the developed countries,some from developing countries.But Pakistan,a friendly neighbor to China,recently adds up to that list of ranks for an anti-dumping investigation on China.It is the national interests that count most,after all. It gives out a signal that anti-dumping would be a frequent tool to defend or to attack. Evidences show China is a target for this trade remedy,but is also targeting others.展开更多
Based on 1995-2008 data, the author researched China and India’s anti-dumping situations, examining the level ofinternational status and countries and industries involved, and analyzed the symmetry between China and ...Based on 1995-2008 data, the author researched China and India’s anti-dumping situations, examining the level ofinternational status and countries and industries involved, and analyzed the symmetry between China and India’sinitiation and the encounter of anti-dumping cases using the index of accusation symmetry (IA) and the index ofsanction symmetry (IS); based on this, the author surveyed India’s successful anti-dumping experiences and analyzedwhy China is frequently accused of anti-dumping, yet loses most anti-dumping petitions initiated against othercountries.The author then put forward policy suggestions regarding how to reduce the intensity of anti-dumpingaccusations filed against China and intensify the strength of its own anti-dumping actions filed against other dumpingnations.展开更多
基金This work has received funding from National Natural Science Foundation of China(No.42275157).
文摘With the rapid advancement in exploring perceptual interactions and digital twins,metaverse technology has emerged to transcend the constraints of space-time and reality,facilitating remote AI-based collaboration.In this dynamic metasystem environment,frequent information exchanges necessitate robust security measures,with Authentication and Key Agreement(AKA)serving as the primary line of defense to ensure communication security.However,traditional AKA protocols fall short in meeting the low-latency requirements essential for synchronous interactions within the metaverse.To address this challenge and enable nearly latency-free interactions,a novel low-latency AKA protocol based on chaotic maps is proposed.This protocol not only ensures mutual authentication of entities within the metasystem but also generates secure session keys.The security of these session keys is rigorously validated through formal proofs,formal verification,and informal proofs.When confronted with the Dolev-Yao(DY)threat model,the session keys are formally demonstrated to be secure under the Real-or-Random(ROR)model.The proposed protocol is further validated through simulations conducted using VMware workstation compiled in HLPSL language and C language.The simulation results affirm the protocol’s effectiveness in resisting well-known attacks while achieving the desired low latency for optimal metaverse interactions.
文摘Background: When continuous scale measurements are available, agreements between two measuring devices are assessed both graphically and analytically. In clinical investigations, Bland and Altman proposed plotting subject-wise differences between raters against subject-wise averages. In order to scientifically assess agreement, Bartko recommended combining the graphical approach with the statistical analytic procedure suggested by Bradley and Blackwood. The advantage of using this approach is that it enables significance testing and sample size estimation. We noted that the direct use of the results of the regression is misleading and we provide a correction in this regard. Methods: Graphical and linear models are used to assess agreements for continuous scale measurements. We demonstrate that software linear regression results should not be readily used and we provided correct analytic procedures. The degrees of freedom of the F-statistics are incorrectly reported, and we propose methods to overcome this problem by introducing the correct analytic form of the F statistic. Methods for sample size estimation using R-functions are also given. Results: We believe that the tutorial and the R-codes are useful tools for testing and estimating agreement between two rating protocols for continuous scale measurements. The interested reader may use the codes and apply them to their available data when the issue of agreement between two raters is the subject of interest.
文摘In recent decades, international trade has evolved into a complex system of trade barriers to ensure the protection of domestic industry and its workers interests. However as tariffs have fallen and international trade tends to be free trade, countries have found another way of protecting domestic industries from foreign competition—non-tariff protection. Among them anti-dumping is the most controversial subject that is involved in the foreign trade. This theme will analyze the reason and effect of growing use anti-dumping measures by countries in recent decades and try to give some possible solutions.
文摘Although the benefits of China’s trade expansion have been distributed much more broadly than those of some early industrialized nations,China has become the primary target of anti-dumping activities.Being a new and relatively efficient new rival in the global market may be an important reason for this.On the other hand,China’s development stage and her trade structure also place her in a disadvantageous position when it comes to anti-dumping activities.
文摘In the run up to the expiry of quota restrictions that had long regulated much of global trade in textiles and clothing, many a pundit predicted widespread recourse to anti-dumping actions.
文摘The president of the National Council of Textile Organizations(NCTO )has written a letter to the Mexican Economic Secretary Hugo Diaz strongly endorsing his country’s decision to seek a World Trade Organization(WTO)
基金the National Science Foundation of Sichuan Province, China (Grant No. 2022NSFSC0534)Major Science, and Techonolgy Application Demonstration Project in Chengdu (Grant No. 2021-YF09-0116-GX)。
文摘In order to make the quantum key agreement process immune to participant attacks, it is necessary to introduce the authentication in the communication process. A quantum key agreement protocol with identity authentication that exploits the measurement correlation of six-particle entangled states is proposed. In contrast to some recently proposed quantum key agreement protocols with authentication, this protocol requires neither a semi-trusted third party nor additional private keys in the authentication process. The entire process of authentication and key agreement can be achieved using only n six-particle entangled states, which saves communication costs and reduces the complexity of the authentication process.Finally, security analysis shows that this scheme is resistant to some important attacks.
基金supported by the National Natural Science Foundation of China under Grant 92046001,61962009,the JSPS KAKENHI Grant Numbers JP19K20250,JP20H04174,JP22K11989Leading Initiative for Excellent Young Researchers (LEADER),MEXT,Japan,and JST,PRESTO Grant Number JPMJPR21P3+1 种基金Japan.Mianxiong Dong is the corresponding author,the Doctor Scientific Research Fund of Zhengzhou University of Light Industry under Grant 2021BSJJ033Key Scientific Research Project of Colleges and Universities in Henan Province (CN)under Grant No.22A413010.
文摘Internet of Medical Things(IoMT)plays an essential role in collecting and managing personal medical data.In recent years,blockchain technology has put power in traditional IoMT systems for data sharing between different medical institutions and improved the utilization of medical data.However,some problems in the information transfer process between wireless medical devices and mobile medical apps,such as information leakage and privacy disclosure.This paper first designs a cross-device key agreement model for blockchain-enabled IoMT.This model can establish a key agreement mechanism for secure medical data sharing.Meanwhile,a certificateless authenticated key agreement(KA)protocol has been proposed to strengthen the information transfer security in the cross-device key agreement model.The proposed KA protocol only requires one exchange of messages between the two parties,which can improve the protocol execution efficiency.Then,any unauthorized tampering of the transmitted signed message sent by the sender can be detected by the receiver,so this can guarantee the success of the establishment of a session key between the strange entities.The blockchain ledger can ensure that the medical data cannot be tampered with,and the certificateless mechanism can weaken the key escrow problem.Moreover,the security proof and performance analysis are given,which show that the proposed model and KA protocol are more secure and efficient than other schemes in similar literature.
文摘Under the pressure of the anti- dumping investigations on silk fabrics launched by the Indian government, the China Chamber of Commerce for Import & Export of Textiles (CCCT) announced that it has decided not to hold the Silk Trade Fair (Autumn) this year, in order to avoid the negative effects the case might bring.
基金supported by the National Key Research and Development Program of China,“Joint Research of IoT Security System and Key Technologies Based on Quantum Key,”under project number 2020YFE0200600.
文摘With the exponential growth of intelligent Internet of Things(IoT)applications,Cloud-Edge(CE)paradigm is emerging as a solution that facilitates resource-efficient and timely services.However,it remains an underlying issue that frequent end-edgecloud communication is over a public or adversarycontrolled channel.Additionally,with the presence of resource-constrained devices,it’s imperative to conduct the secure communication mechanism,while still guaranteeing efficiency.Physical unclonable functions(PUF)emerge as promising lightweight security primitives.Thus,we first construct a PUF-based security mechanism for vulnerable IoT devices.Further,a provably secure and PUF-based authentication key agreement scheme is proposed for establishing the secure channel in end-edge-cloud empowered IoT,without requiring pre-loaded master keys.The security of our scheme is rigorously proven through formal security analysis under the random oracle model,and security verification using AVISPA tool.The comprehensive security features are also elaborated.Moreover,the numerical results demonstrate that the proposed scheme outperforms existing related schemes in terms of computational and communication efficiency.
文摘The past years saw an increased cases of anti-dumping on China mostly from the developed countries,some from developing countries.But Pakistan,a friendly neighbor to China,recently adds up to that list of ranks for an anti-dumping investigation on China.It is the national interests that count most,after all. It gives out a signal that anti-dumping would be a frequent tool to defend or to attack. Evidences show China is a target for this trade remedy,but is also targeting others.
基金funded by the state social science project of Research on the Relationship Between Chinas Financial Development and Trade Structure Optimization (No. 07CGJ00)
文摘Based on 1995-2008 data, the author researched China and India’s anti-dumping situations, examining the level ofinternational status and countries and industries involved, and analyzed the symmetry between China and India’sinitiation and the encounter of anti-dumping cases using the index of accusation symmetry (IA) and the index ofsanction symmetry (IS); based on this, the author surveyed India’s successful anti-dumping experiences and analyzedwhy China is frequently accused of anti-dumping, yet loses most anti-dumping petitions initiated against othercountries.The author then put forward policy suggestions regarding how to reduce the intensity of anti-dumpingaccusations filed against China and intensify the strength of its own anti-dumping actions filed against other dumpingnations.