Protecting the security of sensitive information has become a matter of great concern to everyone. Data hiding technique solves the problem to some extent, but still, some shortcomings remain for researching. To impro...Protecting the security of sensitive information has become a matter of great concern to everyone. Data hiding technique solves the problem to some extent, but still, some shortcomings remain for researching. To improve the capability of hiding huge data file in disk with high efficiency. In this paper, we propose a novel approach called CryptFS, which is achieved by utilizing the file access mechanism and modifying the cluster chain structure to hide data. CryptFS can quickly hide data file with G bytes size in less than 0.1s. The time used for hiding and recovering data is irrelevant to the size of data file, and the reliability of the hidden file is high, which will not be overlaid by new created file and disk defragment.展开更多
The research of cluster supply chains is a new direction and a hotspot of the industrial cluster theory. On the condition of the coordination game, the enterprises may be stuck on the non-efficient equilibrium status,...The research of cluster supply chains is a new direction and a hotspot of the industrial cluster theory. On the condition of the coordination game, the enterprises may be stuck on the non-efficient equilibrium status, which becomes an important problem that must be considered on cluster supply chains. A symmetrical coordination game model is constituted to describe the competition and cooperation relationship of the same-quality manufacturers on cluster supply chains. The methods of the non-cooperation game theory and the evolutionary game theory are respectively used to analyze the model, whose parameters＇ influences under each method are then compared. It can be concluded that the analysis of the evolutionary game theory is more realistic and practical. Finally, three approaches are considered to break away from being path-dependence locked-in non-efficient status during this coordination game evolutionary process, which provide the development of cluster supply chains with an effective forecasting and Pareto optimizing method.展开更多
A new heteropolytungstate, [H2bpy]3[SiMnW11O39]· 1.25H2O （1）, has been prepared under mild hydrothermal conditions and structurally characterized by single crystal X-ray diffraction. It is the first characteriz...A new heteropolytungstate, [H2bpy]3[SiMnW11O39]· 1.25H2O （1）, has been prepared under mild hydrothermal conditions and structurally characterized by single crystal X-ray diffraction. It is the first characterized compound containing ID zigzag chain of transition metal substituted Keggin heteropolytungstate, which is connected through a common oxygen atom. The elemental analysis and IR of it are also described.展开更多
A new complex K0.5[K（18-crown-6）]1.5Geg.1.5en （1） which contains unpreceden- ted ＂up＂ and ＂down＂ chain arrangement of unit [-（Ge9-K-Ge9）3-] has been prepared by the reaction of K4Ge9 with HgS in ethylenediam...A new complex K0.5[K（18-crown-6）]1.5Geg.1.5en （1） which contains unpreceden- ted ＂up＂ and ＂down＂ chain arrangement of unit [-（Ge9-K-Ge9）3-] has been prepared by the reaction of K4Ge9 with HgS in ethylenediamine （en） in the presence of 18-crown-6（1,4,7,10,13,16- hexaoxacyclooctadecane）, and characterized by X-ray structure analysis. The color of the title crystals （black）, which is darker than that of the reported three compounds with chains of germanium clusters, may result from the naked K＋ and their interactions with the chain. And the structure differences between 1 and the reported three compounds with chains of germanium have also been discussed.展开更多
Mathematical modeling for nanofiltration of ionic liquids(ILs) solutions could assist to understand transfer mechanism and predict experimental values. In this work, modeling by solution-diffusion model for nanofiltra...Mathematical modeling for nanofiltration of ionic liquids(ILs) solutions could assist to understand transfer mechanism and predict experimental values. In this work, modeling by solution-diffusion model for nanofiltration of long-alkyl-chain ILs aqueous solutions was proposed. Molecular simulations were performed to validate the existence of ion cluster in long-alkyl-chain ILs aqueous solution. Based on the results of simulations, parameters used in the solution-diffusion model were modified, such as concentration of ILs and diameter of ion cluster.The modeling process was developed for three long-alkyl-chain ILs aqueous solutions with different concentrations(1-alkyl-3-methylimidazolium chloride: [C6 mim]Cl, [C8 mim]Cl, [C10 mim]Cl). The calculated values obtained from modified solution-diffusion model could well match the experimental values.展开更多
This paper first applies the sequential cluster method to set up the classification standard of infectious disease incidence state based on the fact that there are many uncertainty characteristics in the incidence cou...This paper first applies the sequential cluster method to set up the classification standard of infectious disease incidence state based on the fact that there are many uncertainty characteristics in the incidence course.Then the paper presents a weighted Markov chain,a method which is used to predict the future incidence state.This method assumes the standardized self-coefficients as weights based on the special characteristics of infectious disease incidence being a dependent stochastic variable.It also analyzes the characteristics of infectious diseases incidence via the Markov chain Monte Carlo method to make the long-term benefit of decision optimal.Our method is successfully validated using existing incidents data of infectious diseases in Jiangsu Province.In summation,this paper proposes ways to improve the accuracy of the weighted Markov chain,specifically in the field of infection epidemiology.展开更多
On the basis of the introduction of the connotation of agricultural industrialized cluster,the thesis introduces the competitive advantages of agricultural industrialized cluster as follows:firstly,it makes the agricu...On the basis of the introduction of the connotation of agricultural industrialized cluster,the thesis introduces the competitive advantages of agricultural industrialized cluster as follows:firstly,it makes the agricultural production factors cluster and curtails the agricultural production costs;secondly it enhances the innovation abilities of industries;thirdly it improves the urbanization level of rural areas and increases farmers' income.The thesis also analyzes the status quo of agricultural industrialized cluster in Henan Province,points out the advantages of resources,cost,location and so on,and discuses the existing problems of the agricultural industrialized cluster in Henan Province as follows:firstly,the scale of agricultural industrialized cluster is small and the industrialized chain is short;secondly,there is a shortage of leading enterprises,and the radiating effect within industrialized cluster is not prominent;thirdly,the organization degree of agricultural industrialized cluster is weak,lacking scientific innovation ability.In order to solve the existing problems,the corresponding countermeasures are put forward as follows:firstly,take the market as the orientation,strengthen the policies formulation and accelerate the development of agricultural industrialized cluster in Henan by leaps and bounds;secondly,choose suitable developing models of agricultural industrialized cluster.展开更多
Through reviewing the viewpoints of former scholars, the connotation and features of supply chain of agricultural industrial cluster are introduced. The agricultural industrial cluster model constituted by core networ...Through reviewing the viewpoints of former scholars, the connotation and features of supply chain of agricultural industrial cluster are introduced. The agricultural industrial cluster model constituted by core network and supporting network is constructed. Three operation models of this kind of supply chain is described: the model takes wholesale market of agricultural products as the core; the model take pillar industries of agricultural industrialization as core; model takes the chains of retail enterprises as core. The competitiveness of agricultural industrial cluster is researched. The research assumes that the competiveness of supply chain of agricultural industrial cluster is mainly represented to make the agricultural industrial cluster to acquire more capabilities in terms of innovation and knowledge sharing capability, resource allocation capability, agile market adaptability and distinct value creation capability.展开更多
The syntheses and structures of a novel series of polynuclear coinage metal cluster compounds are discussed. The most fascinating structural characteristic of the Au-Ag alloy clusters with Au_18Ag_19 and Au_18Ag_19 co...The syntheses and structures of a novel series of polynuclear coinage metal cluster compounds are discussed. The most fascinating structural characteristic of the Au-Ag alloy clusters with Au_18Ag_19 and Au_18Ag_19 cores and phosphine ligands, which were prepared by the reduction of mononuclear coinage metal complexes R3PAuX and R3PAgX with NaBH4 in organic solution, is their construction from 13-atom gold-centred icosahedral Au_7Ag_6 building blocks. The structures of the polynuclear coinage metal clusters with R2dtc ligands are variable with either unlimited linear chain or triangular M3 units.展开更多
Molecular dynamics simulations of model polyethylene chains with various lengths up to 4000 CH2 units were performed. Our results verified that the modification of force fields to demonstrate the collapse stages in th...Molecular dynamics simulations of model polyethylene chains with various lengths up to 4000 CH2 units were performed. Our results verified that the modification of force fields to demonstrate the collapse stages in the folding process is not necessary. The transition between the stages of chain folding became sharp, and the clusters became stable as the chain became longer.展开更多
基金Supported by the National High Technology Research and Development Program of China (863 Program) (2009AA01Z434)the "Core Electronic Devices, High_End General Chip, and Fundamental Software" Major Project (2013JH00103)
文摘Protecting the security of sensitive information has become a matter of great concern to everyone. Data hiding technique solves the problem to some extent, but still, some shortcomings remain for researching. To improve the capability of hiding huge data file in disk with high efficiency. In this paper, we propose a novel approach called CryptFS, which is achieved by utilizing the file access mechanism and modifying the cluster chain structure to hide data. CryptFS can quickly hide data file with G bytes size in less than 0.1s. The time used for hiding and recovering data is irrelevant to the size of data file, and the reliability of the hidden file is high, which will not be overlaid by new created file and disk defragment.
基金the National Natural Science Foundation of China (60374023)the Natural ScienceFoundation of Guangdong Province (011629).
文摘The research of cluster supply chains is a new direction and a hotspot of the industrial cluster theory. On the condition of the coordination game, the enterprises may be stuck on the non-efficient equilibrium status, which becomes an important problem that must be considered on cluster supply chains. A symmetrical coordination game model is constituted to describe the competition and cooperation relationship of the same-quality manufacturers on cluster supply chains. The methods of the non-cooperation game theory and the evolutionary game theory are respectively used to analyze the model, whose parameters＇ influences under each method are then compared. It can be concluded that the analysis of the evolutionary game theory is more realistic and practical. Finally, three approaches are considered to break away from being path-dependence locked-in non-efficient status during this coordination game evolutionary process, which provide the development of cluster supply chains with an effective forecasting and Pareto optimizing method.
基金This work was supported by the National Natural Science Foundation of China(20371011).
文摘A new heteropolytungstate, [H2bpy]3[SiMnW11O39]· 1.25H2O （1）, has been prepared under mild hydrothermal conditions and structurally characterized by single crystal X-ray diffraction. It is the first characterized compound containing ID zigzag chain of transition metal substituted Keggin heteropolytungstate, which is connected through a common oxygen atom. The elemental analysis and IR of it are also described.
基金Supported by the National Natural Science Foundation of China(No.21003125,21073190)the Natural Science Foundation of Fujian Province(2010 J01057)
文摘A new complex K0.5[K（18-crown-6）]1.5Geg.1.5en （1） which contains unpreceden- ted ＂up＂ and ＂down＂ chain arrangement of unit [-（Ge9-K-Ge9）3-] has been prepared by the reaction of K4Ge9 with HgS in ethylenediamine （en） in the presence of 18-crown-6（1,4,7,10,13,16- hexaoxacyclooctadecane）, and characterized by X-ray structure analysis. The color of the title crystals （black）, which is darker than that of the reported three compounds with chains of germanium clusters, may result from the naked K＋ and their interactions with the chain. And the structure differences between 1 and the reported three compounds with chains of germanium have also been discussed.
基金financially supported by National Key Research and Develop Program of China (2017YFA0206803)National Science Fund for Excellent Young Scholars (21722610)+2 种基金National Natural Science Foundation of China (21676277)Key Program of National Natural Science Foundation of China (91434203)CAS-SAFEA International PartnershipProgramforCreativeResearchTeams (20140491518)
文摘Mathematical modeling for nanofiltration of ionic liquids(ILs) solutions could assist to understand transfer mechanism and predict experimental values. In this work, modeling by solution-diffusion model for nanofiltration of long-alkyl-chain ILs aqueous solutions was proposed. Molecular simulations were performed to validate the existence of ion cluster in long-alkyl-chain ILs aqueous solution. Based on the results of simulations, parameters used in the solution-diffusion model were modified, such as concentration of ILs and diameter of ion cluster.The modeling process was developed for three long-alkyl-chain ILs aqueous solutions with different concentrations(1-alkyl-3-methylimidazolium chloride: [C6 mim]Cl, [C8 mim]Cl, [C10 mim]Cl). The calculated values obtained from modified solution-diffusion model could well match the experimental values.
基金supported in part by"National S&T Major Project Foundation of China"(2009ZX10004-904)Universities Natural Science Foundation of Jiangsu Province(09KJB330004),National Science Foundation Grant DMS-9971405National Institutes of Health Contract N01-HV-28183
文摘This paper first applies the sequential cluster method to set up the classification standard of infectious disease incidence state based on the fact that there are many uncertainty characteristics in the incidence course.Then the paper presents a weighted Markov chain,a method which is used to predict the future incidence state.This method assumes the standardized self-coefficients as weights based on the special characteristics of infectious disease incidence being a dependent stochastic variable.It also analyzes the characteristics of infectious diseases incidence via the Markov chain Monte Carlo method to make the long-term benefit of decision optimal.Our method is successfully validated using existing incidents data of infectious diseases in Jiangsu Province.In summation,this paper proposes ways to improve the accuracy of the weighted Markov chain,specifically in the field of infection epidemiology.
文摘On the basis of the introduction of the connotation of agricultural industrialized cluster,the thesis introduces the competitive advantages of agricultural industrialized cluster as follows:firstly,it makes the agricultural production factors cluster and curtails the agricultural production costs;secondly it enhances the innovation abilities of industries;thirdly it improves the urbanization level of rural areas and increases farmers' income.The thesis also analyzes the status quo of agricultural industrialized cluster in Henan Province,points out the advantages of resources,cost,location and so on,and discuses the existing problems of the agricultural industrialized cluster in Henan Province as follows:firstly,the scale of agricultural industrialized cluster is small and the industrialized chain is short;secondly,there is a shortage of leading enterprises,and the radiating effect within industrialized cluster is not prominent;thirdly,the organization degree of agricultural industrialized cluster is weak,lacking scientific innovation ability.In order to solve the existing problems,the corresponding countermeasures are put forward as follows:firstly,take the market as the orientation,strengthen the policies formulation and accelerate the development of agricultural industrialized cluster in Henan by leaps and bounds;secondly,choose suitable developing models of agricultural industrialized cluster.
基金Supported by Youth Foundation for Humanity and Social Science Research of Minitary of Education (10YJC30255)Foundation for Humanity and Social Science Research of Colleges and Universities in Jiangxi (GL0911)
文摘Through reviewing the viewpoints of former scholars, the connotation and features of supply chain of agricultural industrial cluster are introduced. The agricultural industrial cluster model constituted by core network and supporting network is constructed. Three operation models of this kind of supply chain is described: the model takes wholesale market of agricultural products as the core; the model take pillar industries of agricultural industrialization as core; model takes the chains of retail enterprises as core. The competitiveness of agricultural industrial cluster is researched. The research assumes that the competiveness of supply chain of agricultural industrial cluster is mainly represented to make the agricultural industrial cluster to acquire more capabilities in terms of innovation and knowledge sharing capability, resource allocation capability, agile market adaptability and distinct value creation capability.
文摘The syntheses and structures of a novel series of polynuclear coinage metal cluster compounds are discussed. The most fascinating structural characteristic of the Au-Ag alloy clusters with Au_18Ag_19 and Au_18Ag_19 cores and phosphine ligands, which were prepared by the reduction of mononuclear coinage metal complexes R3PAuX and R3PAgX with NaBH4 in organic solution, is their construction from 13-atom gold-centred icosahedral Au_7Ag_6 building blocks. The structures of the polynuclear coinage metal clusters with R2dtc ligands are variable with either unlimited linear chain or triangular M3 units.
文摘Molecular dynamics simulations of model polyethylene chains with various lengths up to 4000 CH2 units were performed. Our results verified that the modification of force fields to demonstrate the collapse stages in the folding process is not necessary. The transition between the stages of chain folding became sharp, and the clusters became stable as the chain became longer.
