A class of distributions called Box-Cox symmetric was proposed for random variables with asymmetric distributions. This class allows through its structure an interpretation of the parameters in terms of quantiles (in ...A class of distributions called Box-Cox symmetric was proposed for random variables with asymmetric distributions. This class allows through its structure an interpretation of the parameters in terms of quantiles (in particular, the median), relative dispersion and skewness. This study presents the initial </span><span style="font-family:Verdana;">results of the computational development of basic functions of each of the</span><span style="font-family:Verdana;"> distributions that make up the Box-Cox symmetric class. Four functions have been developed to compose a routine in software R up to now. These functions are related to random numbers generation, probability density function, cumulative distribution function, and quantile function associated to a given probability. Examples of implemented functions were presented. The gamlss routine was used to check the performance of developed functions.展开更多
Function secret sharing(FSS)is a secret sharing technique for functions in a specific function class,mainly including distributed point function(DPF)and distributed comparison function(DCF).As an important basis for f...Function secret sharing(FSS)is a secret sharing technique for functions in a specific function class,mainly including distributed point function(DPF)and distributed comparison function(DCF).As an important basis for function secret sharing,DPF and DCF are the foundation for the extension of this technique to other more general and complex function classes.However,the function classes corresponding to the current DPF and DCF schemes are almost all unary function classes,and there is no efficient construction for multivariate function classes.The applications of FSS can be extended with the development of a multivariate scheme,e.g.,a multi-keyword private information retrieval scheme can be constructed.To solve this problem,this paper presents a binary DCF scheme based on the“two-layer binary tree”structure.In a binary tree structure,each node computes the seed of its child nodes based on its own seed.The key technique is to realize the transition transfer of seeds by using oblivious transfer,to connect two unary structures.Theoretical analysis and experimental results show that our binary scheme changes from single-round communication in the original definition to multiround communication,and has great advantages in communication cost and computation efficiency.For the security parameterλand input length n,the key size is reduced from to O(λn^(2))to O(λn)In addition,we explore the extensions and applications of the above method.In the batch computation,this paper uses oblivious transfer(OT)extension to realize the one-time transmission of multiple pairs of seeds and optimize its communication efficiency.By extending the structure from“two-layer”to“multi-layer”,a secret sharing scheme of multivariate mixed basic function is proposed based on the serial thought.Furthermore,by employing the parallel thought,a general 2-layer FSS structure from OT for multivariate mixed basic functions is explored to enhance the efficiency,where the first layer is composed of d parallel binary trees with d representing the input dimension,and the second layer is one binary tree of depth d.And the applications of our schemes in multi-keyword private information retrieval are presented.展开更多
The work presents the application of heat polynomials for solving an inverse problem. The heat polynomials form the Treffetz Method for non-stationary heat conduction problem. They have been used as base functions in ...The work presents the application of heat polynomials for solving an inverse problem. The heat polynomials form the Treffetz Method for non-stationary heat conduction problem. They have been used as base functions in Finite Element Method. Application of heat polynomials permits to reduce the order of numerical integration as compared to the classical Finite Element Method with formulation of the matrix of system of equations.展开更多
Basic function method is developed to treat the incompressible viscous flow. Artificial compressibility coefficient, the technique of flux splitting method and the combination of central and upwind schemes are applied...Basic function method is developed to treat the incompressible viscous flow. Artificial compressibility coefficient, the technique of flux splitting method and the combination of central and upwind schemes are applied to construct the basic function scheme of trigonometric function type for solving three-dimensional incompressible Navier-Stokes equations numerically. To prove the method, flows in finite-length-pipe are calculated, the velocity and pressure distribution of which solved by our method quite coincide with the exact solutions of Poiseuille flow except in the areas of entrance and exit. After the method is proved elementary, the hemodynamics in two-and three-dimensional aneurysms is researched numerically by using the basic function method of trigonometric function type and unstructured grids generation technique. The distributions of velocity, pressure and shear force in steady flow of aneurysms are calculated, and the influence of the shape of the aneurysms on the hemodynamics is studied.展开更多
Basic helix-loop-helix （bHLH） transcription factors regulate the differentiation of various tissues in a vast diversity of species. The bHLH protein Atonal was first identified as a proneural gene involved in the fo...Basic helix-loop-helix （bHLH） transcription factors regulate the differentiation of various tissues in a vast diversity of species. The bHLH protein Atonal was first identified as a proneural gene involved in the formation of mechanosensory cells and photoreceptor cells in Drosophila （larman et al., 1993, 1994）. Atonal is expressed in sensory organ precursors and is required and sufficient for the development of chordotonal organs （Jar- man et al., 1993）. Moreover, Atonal expression is observed in the developing eye and is essential for the differentiation of R8 photoreceptors, which are the first photoreceptors that appear during development. Atonal is not involved in the formation of other photoreceptors （R1-R7） directly. However, R8 photore- ceptors recruit other photoreceptors from the surrounding cells （Jarman et al., 1994）.展开更多
目的探析脑梗死患者髓鞘碱性蛋白(myelin basic protein,MBP)、S100钙结合蛋白B(S100 calcium-binding protein B,S100-B)水平与介入治疗后早期神经功能恶化的关联性。方法纳入2021年7月–2024年7月期间本院收治的258例脑梗死患者,采用...目的探析脑梗死患者髓鞘碱性蛋白(myelin basic protein,MBP)、S100钙结合蛋白B(S100 calcium-binding protein B,S100-B)水平与介入治疗后早期神经功能恶化的关联性。方法纳入2021年7月–2024年7月期间本院收治的258例脑梗死患者,采用美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分评估患者的神经功能状况,将死亡患者或介入治疗24 h后NIHSS评分增加4分及以上患者纳入早期神经功能恶化组,其余患者纳入未恶化组。测定所有患者MBP、S100-B水平,并分析其水平变化与介入治疗后神经功能恶化风险的关系。结果脑梗死患者早期神经功能恶化组血清MBP、S100-B水平高于未恶化组〔t=9.062(95%CI:2.348~3.663)、7.708(95%CI:0.221~0.375),P<0.001〕;Spearman相关性显示:恶化组血清MBP、S100-B水平与NIHSS评分增加情况呈正相关〔r=0.323(95%CI:0.095~0.542)、0.292(95%CI:0.066~0.488),P<0.05〕;分层回归分析显示:血清MBP〔比值比(odds ratio,OR)=1.996,95%CI:1.607~2.478〕、S100-B(OR=1.005,95%CI:1.003~1.007)水平是影响脑梗死患者早期神经功能恶化的危险因素(P<0.05),即使校正混杂因素后依然是其危险因素,此外入院NIHSS评分(OR=1.224,95%CI:1.142~1.310)及合并高血压(OR=2.542,95%CI:1.139~5.669)、高脂血症(OR=2.618,95%CI:1.101~6.228),其中入院NIHSS评分与MBP存在交互作用(OR=1.081,95%CI:1.034~1.130);受试者工作特征曲线显示:血清MBP、S100-B水平评估脑梗死患者早期神经功能恶化的曲线下面积分别为0.822(95%CI:0.764~0.879)、0.788(95%CI:0.724~0.853)。结论脑梗死患者介入治疗后血清MBP、S100-B水平较高与早期神经功能恶化风险相关,且对神经功能恶化风险有一定的评估价值。展开更多
文摘A class of distributions called Box-Cox symmetric was proposed for random variables with asymmetric distributions. This class allows through its structure an interpretation of the parameters in terms of quantiles (in particular, the median), relative dispersion and skewness. This study presents the initial </span><span style="font-family:Verdana;">results of the computational development of basic functions of each of the</span><span style="font-family:Verdana;"> distributions that make up the Box-Cox symmetric class. Four functions have been developed to compose a routine in software R up to now. These functions are related to random numbers generation, probability density function, cumulative distribution function, and quantile function associated to a given probability. Examples of implemented functions were presented. The gamlss routine was used to check the performance of developed functions.
基金supported by National Key R&D Program of China(No.2022ZD0161901)the National Natural Science Foundation of China(Grant No.62072023)+3 种基金Beijing Natural Science Foundation(No.4242024)the Open Project Fund of the State Key Laboratory of Cryptology,China(No.MMKFKT202120)the Exploratory Optional Project Fund of the State Key Laboratory of Complex&Critical Software Environment(No.SKLCCSE-2025ZX-XX)the Fundamental Research Funds of Beihang University,China(Nos.YWF-21-BJ-J-1041 and YWF-23-L-1033).
文摘Function secret sharing(FSS)is a secret sharing technique for functions in a specific function class,mainly including distributed point function(DPF)and distributed comparison function(DCF).As an important basis for function secret sharing,DPF and DCF are the foundation for the extension of this technique to other more general and complex function classes.However,the function classes corresponding to the current DPF and DCF schemes are almost all unary function classes,and there is no efficient construction for multivariate function classes.The applications of FSS can be extended with the development of a multivariate scheme,e.g.,a multi-keyword private information retrieval scheme can be constructed.To solve this problem,this paper presents a binary DCF scheme based on the“two-layer binary tree”structure.In a binary tree structure,each node computes the seed of its child nodes based on its own seed.The key technique is to realize the transition transfer of seeds by using oblivious transfer,to connect two unary structures.Theoretical analysis and experimental results show that our binary scheme changes from single-round communication in the original definition to multiround communication,and has great advantages in communication cost and computation efficiency.For the security parameterλand input length n,the key size is reduced from to O(λn^(2))to O(λn)In addition,we explore the extensions and applications of the above method.In the batch computation,this paper uses oblivious transfer(OT)extension to realize the one-time transmission of multiple pairs of seeds and optimize its communication efficiency.By extending the structure from“two-layer”to“multi-layer”,a secret sharing scheme of multivariate mixed basic function is proposed based on the serial thought.Furthermore,by employing the parallel thought,a general 2-layer FSS structure from OT for multivariate mixed basic functions is explored to enhance the efficiency,where the first layer is composed of d parallel binary trees with d representing the input dimension,and the second layer is one binary tree of depth d.And the applications of our schemes in multi-keyword private information retrieval are presented.
基金The present work is an effect of work within KBN 8T10B01913 Grant cooperation with the Chair of Steam-Gas Turbines of TU Dresden supported by the Humboldt-Foundation.
文摘The work presents the application of heat polynomials for solving an inverse problem. The heat polynomials form the Treffetz Method for non-stationary heat conduction problem. They have been used as base functions in Finite Element Method. Application of heat polynomials permits to reduce the order of numerical integration as compared to the classical Finite Element Method with formulation of the matrix of system of equations.
基金Supported by the National Natural Foundation of China (Grant Nos.40874077,40504020,and 40536029)the National Basic Research Program of China (Grant No.2006CB806304)
文摘Basic function method is developed to treat the incompressible viscous flow. Artificial compressibility coefficient, the technique of flux splitting method and the combination of central and upwind schemes are applied to construct the basic function scheme of trigonometric function type for solving three-dimensional incompressible Navier-Stokes equations numerically. To prove the method, flows in finite-length-pipe are calculated, the velocity and pressure distribution of which solved by our method quite coincide with the exact solutions of Poiseuille flow except in the areas of entrance and exit. After the method is proved elementary, the hemodynamics in two-and three-dimensional aneurysms is researched numerically by using the basic function method of trigonometric function type and unstructured grids generation technique. The distributions of velocity, pressure and shear force in steady flow of aneurysms are calculated, and the influence of the shape of the aneurysms on the hemodynamics is studied.
基金supported by grants from the Ministry of Education,Culture,Sports,Science and Technology in Japan and Naito Foundation to TCthe Japan Society for the Promotion of Science to MO and TC
文摘Basic helix-loop-helix （bHLH） transcription factors regulate the differentiation of various tissues in a vast diversity of species. The bHLH protein Atonal was first identified as a proneural gene involved in the formation of mechanosensory cells and photoreceptor cells in Drosophila （larman et al., 1993, 1994）. Atonal is expressed in sensory organ precursors and is required and sufficient for the development of chordotonal organs （Jar- man et al., 1993）. Moreover, Atonal expression is observed in the developing eye and is essential for the differentiation of R8 photoreceptors, which are the first photoreceptors that appear during development. Atonal is not involved in the formation of other photoreceptors （R1-R7） directly. However, R8 photore- ceptors recruit other photoreceptors from the surrounding cells （Jarman et al., 1994）.
文摘目的探析脑梗死患者髓鞘碱性蛋白(myelin basic protein,MBP)、S100钙结合蛋白B(S100 calcium-binding protein B,S100-B)水平与介入治疗后早期神经功能恶化的关联性。方法纳入2021年7月–2024年7月期间本院收治的258例脑梗死患者,采用美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分评估患者的神经功能状况,将死亡患者或介入治疗24 h后NIHSS评分增加4分及以上患者纳入早期神经功能恶化组,其余患者纳入未恶化组。测定所有患者MBP、S100-B水平,并分析其水平变化与介入治疗后神经功能恶化风险的关系。结果脑梗死患者早期神经功能恶化组血清MBP、S100-B水平高于未恶化组〔t=9.062(95%CI:2.348~3.663)、7.708(95%CI:0.221~0.375),P<0.001〕;Spearman相关性显示:恶化组血清MBP、S100-B水平与NIHSS评分增加情况呈正相关〔r=0.323(95%CI:0.095~0.542)、0.292(95%CI:0.066~0.488),P<0.05〕;分层回归分析显示:血清MBP〔比值比(odds ratio,OR)=1.996,95%CI:1.607~2.478〕、S100-B(OR=1.005,95%CI:1.003~1.007)水平是影响脑梗死患者早期神经功能恶化的危险因素(P<0.05),即使校正混杂因素后依然是其危险因素,此外入院NIHSS评分(OR=1.224,95%CI:1.142~1.310)及合并高血压(OR=2.542,95%CI:1.139~5.669)、高脂血症(OR=2.618,95%CI:1.101~6.228),其中入院NIHSS评分与MBP存在交互作用(OR=1.081,95%CI:1.034~1.130);受试者工作特征曲线显示:血清MBP、S100-B水平评估脑梗死患者早期神经功能恶化的曲线下面积分别为0.822(95%CI:0.764~0.879)、0.788(95%CI:0.724~0.853)。结论脑梗死患者介入治疗后血清MBP、S100-B水平较高与早期神经功能恶化风险相关,且对神经功能恶化风险有一定的评估价值。
