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Explore the Mystery of the Origin of the Double Helix and the Biomembrane
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作者 xiangchen yin 《Journal of Biosciences and Medicines》 2015年第3期1-5,共5页
In nature, the most possible reason that helix is chosen as the basic structure of life molecule is based on its simplest chiral three-dimensional structure. The process of the conversion from chemical molecules to do... In nature, the most possible reason that helix is chosen as the basic structure of life molecule is based on its simplest chiral three-dimensional structure. The process of the conversion from chemical molecules to double helical molecules is completed by the topology effect which belongs to the simplest way to form helix, and no external power is needed;moreover, the energy of double helix has fixed drive direction [1]. The dual-branch loop helix (II)—the transition state of double helix has many uses, for example, it can be turned to double helix, and it may be broken into two fragments of a and b which can construct more complicated structures. So the dual- branch loop helix (II) can provide special "building block" of assembling biomembrane and other life molecules. 展开更多
关键词 Topology Double HELIX Dual-Branch Loop HELIX Building Block BIOMEMBRANE
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Optimal Pricing Model of IoT Data Market Based on Profit Maximization
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作者 Chunmei HU Jian YANG xiangchen yin 《Journal of Systems Science and Information》 CSCD 2024年第6期758-774,共17页
The growth of the Internet of Things(IoT)equipment business encourages the collection of large sizes of data.IoT data is being regarded as a new digital asset which contains valuable information.As a result,IoT data t... The growth of the Internet of Things(IoT)equipment business encourages the collection of large sizes of data.IoT data is being regarded as a new digital asset which contains valuable information.As a result,IoT data transactions are gaining in popularity,and data markets are starting to emerge.To support the smooth flow of data transactions,several academics offer market models and pricing techniques from various perspectives.However,the factors considered in the pricing model are still not comprehensive enough,and the willingness to sell of data providers has been ignored.Therefore,this paper investigates the pricing and profit maximization problems for the IoT data market who considers the willingness of data providers as well as data quality when purchasing data.Firstly,we analyze the factors that impact data providers’willingness to sell and give a definition of the willingness function.Secondly,we propose a data quality evaluation method and define a joint utility function based on data size and data quality.In addition,we build the profit function model of data market and give theoretical analysis.Finally,numerical experiments demonstrate that the suggested pricing mechanism can benefit the data market participants the most. 展开更多
关键词 IoT data market utility function pricing model
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