Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics...Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control mechanism.However,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal contexts.This transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of RBAC.In this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal contexts.Our discussion is on two lines of inquiry.We present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.展开更多
Let C be the Cantor triadic set and let Ca= C+a = The authors give the dimensions of and Hp. In addition the characteristic of Hp is described by means of some measure supported on C.
Abstract In this paper the derivative and its exceptional set according to the alternatively jumping function and self similar function respectively are discussed. And in the appendix, a proof of the statement 1.2(2) ...Abstract In this paper the derivative and its exceptional set according to the alternatively jumping function and self similar function respectively are discussed. And in the appendix, a proof of the statement 1.2(2) of “Calculus on Cantor triadic set (Ⅰ)_derivative” which is important to the discussion of exceptional set is given.展开更多
Cluster deletion and strong triadic closure are two important NP-complete problems that have received sig-nificant attention due to their applications in various areas,including social networks and data analysis.Altho...Cluster deletion and strong triadic closure are two important NP-complete problems that have received sig-nificant attention due to their applications in various areas,including social networks and data analysis.Although cluster deletion and strong triadic closure are closely linked by induced paths on three vertices,there are subtle differences be-tween them.In some cases,the solutions of strong triadic closure and cluster deletion are quite different.In this paper,we study the parameterized algorithms for these two problems.More specifically,we focus on the kernels of these two prob-lems.Instead of separating the critical clique and its neighbors for analysis,we consider them as a whole,which allows us to more effectively bound the number of related vertices.In addition,in analyzing the kernel of strong triadic closure,we introduce the concept of edge-disjoint induced path on three vertices,which enables us to obtain the lower bound of weak edge number in a more concise way.Our analysis demonstrates that cluster deletion and strong triadic closure both admit 2k-vertex kernels.These results represent improvements over previously best-known kernels for both problems.Further-more,our analysis provides additional insights into the relationship between cluster deletion and strong triadic closure.展开更多
This work is devoted to the experimental study of inertial wave regimes in a non-uniform rotating cylinder with antiparallel inclined ends.In this setting,the cross-section of the cylinder is divided into two regions ...This work is devoted to the experimental study of inertial wave regimes in a non-uniform rotating cylinder with antiparallel inclined ends.In this setting,the cross-section of the cylinder is divided into two regions where the fluid depth increases or decreases with radius.Three different regimes are found:inertial wave attractor,global oscillations(the cavity’s resonant modes)and regime of symmetric reflection of wave beams.In linear wave regimes,a steady single vortex elongated along the rotation axis is generated.The location of the wave’s interaction with the sloping ends determines the vortex position and the vorticity sign.In non-linear regimes several pairs of the triadic resonance subharmonics are detected simultaneously.The instability of triadic resonance is accompanied by the periodic generation of mean vortices drifting in the azimuthal direction.Moreover,the appearance frequency of the vortices is consistent with the low-frequency subharmonic of the triadic resonance.The experimental results shed light on the mechanisms of the inertial wave interaction with zonal flow and may be useful for the development of new methods of mixing.展开更多
文章基于新黎曼理论三和弦进行提出一个理论框架,以“平行”和“导音转换”两种仅涉及半音进行的三和弦变换架构六音系统和超六音系统,并通过在这一理论框架下分析瓦格纳、弗朗克、理查·施特劳斯等作曲家作品中的半音化和声,演示...文章基于新黎曼理论三和弦进行提出一个理论框架,以“平行”和“导音转换”两种仅涉及半音进行的三和弦变换架构六音系统和超六音系统,并通过在这一理论框架下分析瓦格纳、弗朗克、理查·施特劳斯等作曲家作品中的半音化和声,演示晚期浪漫主义音乐中三和弦在六音空间及自然音级空间中独特的进行方式。该理论框架的完整与自洽性、其与浪漫主义晚期创作实践的紧密联系,及其对游离于传统调性理论边缘的和声进行引发的思考,使该文成为新黎曼理论最具开创性的研究之一,以及该领域迄今引用量最高的文章(据web of science及谷歌学术数据)。展开更多
基金the financial support from Department of Science and Technology,Government of India under the grant:SR/CSRI/118/2014
文摘Role based access control is one of the widely used access control models.There are investigations in the literature that use knowledge representation mechanisms such as formal concept analysis(FCA),description logics,and Ontology for representing access control mechanism.However,while using FCA,investigations reported in the literature so far work on the logic that transforms the three dimensional access control matrix into dyadic formal contexts.This transformation is mainly to derive the formal concepts,lattice structure and implications to represent role hierarchy and constraints of RBAC.In this work,we propose a methodology that models RBAC using triadic FCA without transforming the triadic access control matrix into dyadic formal contexts.Our discussion is on two lines of inquiry.We present how triadic FCA can provide a suitable representation of RBAC policy and we demonstrate how this representation follows role hierarchy and constraints of RBAC on sample healthcare network available in the literature.
基金a grant from the National Science Foundation of China.
文摘Let C be the Cantor triadic set and let Ca= C+a = The authors give the dimensions of and Hp. In addition the characteristic of Hp is described by means of some measure supported on C.
文摘Abstract In this paper the derivative and its exceptional set according to the alternatively jumping function and self similar function respectively are discussed. And in the appendix, a proof of the statement 1.2(2) of “Calculus on Cantor triadic set (Ⅰ)_derivative” which is important to the discussion of exceptional set is given.
文摘Cluster deletion and strong triadic closure are two important NP-complete problems that have received sig-nificant attention due to their applications in various areas,including social networks and data analysis.Although cluster deletion and strong triadic closure are closely linked by induced paths on three vertices,there are subtle differences be-tween them.In some cases,the solutions of strong triadic closure and cluster deletion are quite different.In this paper,we study the parameterized algorithms for these two problems.More specifically,we focus on the kernels of these two prob-lems.Instead of separating the critical clique and its neighbors for analysis,we consider them as a whole,which allows us to more effectively bound the number of related vertices.In addition,in analyzing the kernel of strong triadic closure,we introduce the concept of edge-disjoint induced path on three vertices,which enables us to obtain the lower bound of weak edge number in a more concise way.Our analysis demonstrates that cluster deletion and strong triadic closure both admit 2k-vertex kernels.These results represent improvements over previously best-known kernels for both problems.Further-more,our analysis provides additional insights into the relationship between cluster deletion and strong triadic closure.
基金supported by the Ministry of Education of the Russian Federation(Project KPZU-2023-0002).
文摘This work is devoted to the experimental study of inertial wave regimes in a non-uniform rotating cylinder with antiparallel inclined ends.In this setting,the cross-section of the cylinder is divided into two regions where the fluid depth increases or decreases with radius.Three different regimes are found:inertial wave attractor,global oscillations(the cavity’s resonant modes)and regime of symmetric reflection of wave beams.In linear wave regimes,a steady single vortex elongated along the rotation axis is generated.The location of the wave’s interaction with the sloping ends determines the vortex position and the vorticity sign.In non-linear regimes several pairs of the triadic resonance subharmonics are detected simultaneously.The instability of triadic resonance is accompanied by the periodic generation of mean vortices drifting in the azimuthal direction.Moreover,the appearance frequency of the vortices is consistent with the low-frequency subharmonic of the triadic resonance.The experimental results shed light on the mechanisms of the inertial wave interaction with zonal flow and may be useful for the development of new methods of mixing.
文摘文章基于新黎曼理论三和弦进行提出一个理论框架,以“平行”和“导音转换”两种仅涉及半音进行的三和弦变换架构六音系统和超六音系统,并通过在这一理论框架下分析瓦格纳、弗朗克、理查·施特劳斯等作曲家作品中的半音化和声,演示晚期浪漫主义音乐中三和弦在六音空间及自然音级空间中独特的进行方式。该理论框架的完整与自洽性、其与浪漫主义晚期创作实践的紧密联系,及其对游离于传统调性理论边缘的和声进行引发的思考,使该文成为新黎曼理论最具开创性的研究之一,以及该领域迄今引用量最高的文章(据web of science及谷歌学术数据)。
