With the increasingly prominent problem of food safety,the quality traceability of characteristic agricultural products has become a pressing issue.This study focuses on the application of blockchain technology in the...With the increasingly prominent problem of food safety,the quality traceability of characteristic agricultural products has become a pressing issue.This study focuses on the application of blockchain technology in the traceability of characteristic agricultural products,aiming to explore its potential and practical value in improving the efficiency and transparency of the traceability system of agricultural products.Through the combination of case analysis and model construction,a blockchain-based traceability system for characteristic agricultural products was established.The results showed that the traceability system could effectively record the whole process information of agricultural products from production and processing to sales,and greatly improve the immutability and traceability of data.Lastly,this paper also points out that the use of blockchain technology can improve the market trust in characteristic agricultural products,provide consumers with authentic and reliable product information,and provide new technical means for the quality management of agricultural products.展开更多
The structure of a power energy system is becoming more distributed than before.It becomes challenging to manage such a system in a centralized way,because a central authority may not exist or may not be trusted by al...The structure of a power energy system is becoming more distributed than before.It becomes challenging to manage such a system in a centralized way,because a central authority may not exist or may not be trusted by all parties.Blockchain is a promising tool to address this challenge,by enabling trusted collaboration in the absence of a trusted central authority.Its use in the energy sector has been pioneered by several pilot projects.However,to date the energy sector has not seen large-scale deployment of blockchain,partly because the founders of those pilot projects,the public,and utilities have not reached consensus on the values and limitations of blockchain in energy.This perspective aims to bridge this gap.First,the philosophy and unique values of blockchain are discussed.Second,some promising blockchain-based applications in energy systems are presented.Third,some common misunderstandings of blockchain in energy are discussed.Last,some frequently-asked questions from utilities are discussed.Hopefully this perspective can help advance large-scale deployment of blockchain in energy systems.展开更多
Chinese Buddhist texts come with a copious amount of Taoist terminology. And many of these technical terms areantonyms, such as motion and rest, existence and inexistence, delusion and truth, and so on. However, there...Chinese Buddhist texts come with a copious amount of Taoist terminology. And many of these technical terms areantonyms, such as motion and rest, existence and inexistence, delusion and truth, and so on. However, there is unityand internal connections among those seemingly opposite concepts. According to Seng-chao, there is motion withinrest and rest within motion. The three temporal phases, the past, the present, and the future, are not flux and flowinglike a river. The entities of the world are not physical and tangible. All the intangible and the imperceptible alsodeserve a place in the world. The reason why common people confuse illusion with truth is that they have notattained sage-knowledge. And their ignorance of sage-knowledge destines them to live forever in suffering in thecircle of birth and life, which is also known as Samsara. Nirvana is the sole escape. To reach Nirvana, one isrequired to be enlightened with absolute truth.展开更多
The signifier and signified of symbol representation in art works can generate and reflect reality.However,it can never produce the absolute truth.This paper mainly discusses the relationship between immutability with...The signifier and signified of symbol representation in art works can generate and reflect reality.However,it can never produce the absolute truth.This paper mainly discusses the relationship between immutability with arbitrariness,sociality,and continuity in art education,both online and in outline.Overall,it is recommended that practical art teaching should be guided by artistic achievements.In addition,we clarify immutability of network teaching mode in art education,and recommend exploration of conscious,independent and self-discipline modes.展开更多
文摘With the increasingly prominent problem of food safety,the quality traceability of characteristic agricultural products has become a pressing issue.This study focuses on the application of blockchain technology in the traceability of characteristic agricultural products,aiming to explore its potential and practical value in improving the efficiency and transparency of the traceability system of agricultural products.Through the combination of case analysis and model construction,a blockchain-based traceability system for characteristic agricultural products was established.The results showed that the traceability system could effectively record the whole process information of agricultural products from production and processing to sales,and greatly improve the immutability and traceability of data.Lastly,this paper also points out that the use of blockchain technology can improve the market trust in characteristic agricultural products,provide consumers with authentic and reliable product information,and provide new technical means for the quality management of agricultural products.
基金supported by the National Key R&D Program of China(No.2021YFC2100100)the National Natural Science Foundation of China(No.21901157)the Shanghai Science and Technology Project of China(No.21JC1403400).
文摘The structure of a power energy system is becoming more distributed than before.It becomes challenging to manage such a system in a centralized way,because a central authority may not exist or may not be trusted by all parties.Blockchain is a promising tool to address this challenge,by enabling trusted collaboration in the absence of a trusted central authority.Its use in the energy sector has been pioneered by several pilot projects.However,to date the energy sector has not seen large-scale deployment of blockchain,partly because the founders of those pilot projects,the public,and utilities have not reached consensus on the values and limitations of blockchain in energy.This perspective aims to bridge this gap.First,the philosophy and unique values of blockchain are discussed.Second,some promising blockchain-based applications in energy systems are presented.Third,some common misunderstandings of blockchain in energy are discussed.Last,some frequently-asked questions from utilities are discussed.Hopefully this perspective can help advance large-scale deployment of blockchain in energy systems.
文摘Chinese Buddhist texts come with a copious amount of Taoist terminology. And many of these technical terms areantonyms, such as motion and rest, existence and inexistence, delusion and truth, and so on. However, there is unityand internal connections among those seemingly opposite concepts. According to Seng-chao, there is motion withinrest and rest within motion. The three temporal phases, the past, the present, and the future, are not flux and flowinglike a river. The entities of the world are not physical and tangible. All the intangible and the imperceptible alsodeserve a place in the world. The reason why common people confuse illusion with truth is that they have notattained sage-knowledge. And their ignorance of sage-knowledge destines them to live forever in suffering in thecircle of birth and life, which is also known as Samsara. Nirvana is the sole escape. To reach Nirvana, one isrequired to be enlightened with absolute truth.
基金This paper is one of the phased achievements of Beijing scientific research project:Capacity building of science and technology for innovation service--Research on the path of integrated development to support the construction of four centers in Beijing.(Project No.:12213991920010465)。
文摘The signifier and signified of symbol representation in art works can generate and reflect reality.However,it can never produce the absolute truth.This paper mainly discusses the relationship between immutability with arbitrariness,sociality,and continuity in art education,both online and in outline.Overall,it is recommended that practical art teaching should be guided by artistic achievements.In addition,we clarify immutability of network teaching mode in art education,and recommend exploration of conscious,independent and self-discipline modes.
