In this paper we present mathematical model of well known Delta-Notch signaling system in form of nonlinear, singular, impulsive and singularly impulsive dynamical systems. This example is interesting since it posses ...
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The expected number of interchanges and comparisons in Floyd's well-known algorithm to construct heaps and derive the probability generating functions for these quantities are considered. From these functions the ...
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The expected number of interchanges and comparisons in Floyd's well-known algorithm to construct heaps and derive the probability generating functions for these quantities are considered. From these functions the corresponding expected values are computed.
A nonlinear stochastic model accommodating heterogeneous risk behavior and recruitment was fit to Philadelphia public health data adjusted for delays in reporting. The methodological study that was performed resulted ...
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A nonlinear stochastic model accommodating heterogeneous risk behavior and recruitment was fit to Philadelphia public health data adjusted for delays in reporting. The methodological study that was performed resulted in a finding of significant clinical importance. Namely, that the variable time from infection with HIV to seroconversion may be longer than reported in the literature. The finding challenges our understanding of the progression of HIV disease and has profound public health implications. Although the model and the software incorporated several risk categories, such as heterosexual males and females among others, those examined in this paper are confined to white male homosexual/bisexual intravenous drug users and white male homosexual/bisexual nonintravenous drug users. The results of this paper demonstrate that it is possible to fit a rather complex stochastic model to public health data, using computer intensive methods, and thus, more completely reflect the diversity of human behavior represented by the defined risk groups of the data.
Temporal ontologies allow to represent not only concepts,their properties,and their relationships,but also time-varying information through explicit versioning of definitions or through the four-dimensional perduranti...
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Temporal ontologies allow to represent not only concepts,their properties,and their relationships,but also time-varying information through explicit versioning of definitions or through the four-dimensional perdurantist *** are widely used to formally represent temporal data semantics in several applications belonging to different fields(e.g.,Semantic Web,expert systems,knowledge bases,big data,and artificial intelligence).They facilitate temporal knowledge representation and discovery,with the support of temporal data querying and ***,there is no standard or consensual temporal ontology query *** a previous work,we have proposed an approach namedτJOWL(temporal OWL 2 from temporal JSON,where OWL 2 stands for"OWL 2 Web Ontology Language"and JSON stands for"JavaScript Object Notation").τJOWL allows(1)to automatically build a temporal OWL 2 ontology of data,following the Closed World Assumption(CWA),from temporal JSON-based big data,and(2)to manage its incremental maintenance accommodating their evolution,in a temporal and multi-schema-version *** this paper,we propose a temporal ontology query language forτJOWL,namedτSQWRL(temporal SQWRL),designed as a temporal extension of the ontology query language—Semantic Query-enhanced Web Rule Language(SQWRL).The new language has been inspired by the features of the consensual temporal query language TSQL2(Temporal SQL2),well known in the temporal(relational)database *** aim of the proposal is to enable and simplify the task of retrieving any desired ontology version or of specifying any(complex)temporal query on time-varying ontologies generated from time-varying big *** examples,in the Internet of Healthcare Things(IoHT)domain,are provided to motivate and illustrate our proposal.
In this paper the Hasse-Minkowski theorem is used over a number field to give necessary and sufficient conditions for the orthogonal similarity of two symmetric matrices over the field of rational numbers.
In this paper the Hasse-Minkowski theorem is used over a number field to give necessary and sufficient conditions for the orthogonal similarity of two symmetric matrices over the field of rational numbers.
By reinterpreting a result due to Ursell (Proc. Camb. phil. Sec. 53 (1957) 115) for convex objects a foundation is provided for high-frequency approximations such as physical optics and surface radiation conditions.
By reinterpreting a result due to Ursell (Proc. Camb. phil. Sec. 53 (1957) 115) for convex objects a foundation is provided for high-frequency approximations such as physical optics and surface radiation conditions.
We show that existence of a non-coercive Lyapunov function is sufficient for uniform global asymptotic stability (UGAS) of infinite-dimensional systems with external disturbances provided an additional mild assumption...
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Let phi be a univariate 2pi-periodic function. Suppose that s greater-than-or-equal-to 1 and f is a 2pi-periodic function of s real variables. We study sufficient conditions in order that a neural network having a sin...
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Let phi be a univariate 2pi-periodic function. Suppose that s greater-than-or-equal-to 1 and f is a 2pi-periodic function of s real variables. We study sufficient conditions in order that a neural network having a single hidden layer consisting of n neurons, each with an activation function phi, can be constructed so as to give a mean square approximation to f within a given accuracy epsilon(n), independent of the number of variables. We also discuss the case in which the activation function phi is not 2pi-periodic.
This study investigated the effects of demographic and socio-economic factors on youth non-participation in Yala province using data from the 2000 Population and Housing Census of Thailand. The study sample comprised ...
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In this paper we aim to construct piecewise-linear (PWL) approximations for functions of multiple variables and to build compact mixed-integer linear programming (MILP) formulations to represent the resulting PWL func...
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