Browsing by Issue Date
Now showing items 21-40 of 1516
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Unique Solution to Periodic Boundary Value Problems
(1991)Existence of unique solution to periodic boundary value problems of differential equations with continuous or discontinuous right-hand side is considered by utilizing the method of lower and upper solutions and the monotone ... -
On Modulated Random Measures
(1991)In this paper the author introduces the notion of a modulated marked random measure, Zξ on the class of locally compact and σ-compact spaces with countable bases. As special cases, are marked processes modulated by ξ are ... -
A first passage problem and its applications to the analysis of a class of stochastic models
(1991)A problem of the first passage of a cumulative random process with generally distributed discrete or continuous increments over a fixed level is considered in the article as an essential part of the analysis of a class of ... -
UV observations of the cool DBQA5 white dwarf LDS 678A: Limits on the atmospheric composition, pressure shift, and gravitational redshift derived from C I 2479
(1991-02)We present a high-resolution ultraviolet spectrum of the helium-rich degenerate LDS 678A, obtained with the International Ultraviolet Explorer (IUE) satellite. LDS 678A is the coolest metallic line degenerate (DQ or DZ) ... -
The physical properties of double degenerate common proper motion binaries
(1991-04)We present spectral types and spectrophotometry for 21 double degenerate (DD) common proper motion binaries and provide estimates of their colors, absolute visual and bolometric magnitudes, and cooling ages. The most typical ... -
Simultaneous light and radial velocity curve solutions for U Cephei
(1991-08-10)The light-curve synthesis approach of Wilson & Devinney has been used to solve simultaneously light and radial velocity curves of the Algol-type eclipsing binary star U Cephei. We have performed eight new differential ... -
A queueing system with a fixed accumulation level, random server capacity and capacity dependent service time
(1992)This paper introduces a bulk queueing system with a single server processing groups of customers of a variable size. If upon completion of service the queueing level is at least r the server takes a batch of size r and ... -
On a first passage problem in general queueing systems with multiple vacations
(1992)The author studies a generalized single-server queueing system with bulk arrivals and batch service, where the server takes vacations each time the queue level falls below r(≥1) in accordance with the multiple vacation ... -
A First Passage Problem and its Applications to the Analysis of a Class of Stochastic Models
(1992)A problem of the first passage of a cumulative random process with generally distributed discrete or continuous increments over a fixed level is considered in the article as an essential part of the analysis of a class of ... -
Extremal Solutions to a Class of Multivalued Integral Equations in Banach Space
(1992)We consider a nonlinear Volterra integral inclusion in a Banach space. We establish the existence of extremal integral solutions, and we show that they are dense in the solution set of the original equation. As an important ... -
On a multilevel controlled bulk queueing system MX/Gr,R/1
(1992)The authors introduce and study a class of bulk queueing systems with a compound Poisson input modulated by a semi-Markov process, multilevel control service time and a queue length dependent service delay discipline. ... -
Generalized Two Point Boundary Value Problems. Existence and Uniqueness
(1992)An algorithm is presented for finding the pseudo-inverse of a rectangular matrix. Using this algorithm as a tool, existence and uniqueness of solutions to two point boundary value problems associated with general first ... -
Existence of Approximate Solution to Abstract Nonlocal Cauchy Problem
(1992)The aim of the paper is to prove a theorem about the existence of an approximate solution to an abstract nonlinear nonlocal Cauchy problem in a Banach space. The right-hand side of the nonlocal condition belongs to a locally ... -
On Solvability of Mixed Monotone Operator Equations with Applications to Mixed Quasimonotone Differential Systems Involving Discontinuities
(1992)In this paper we shall first study solvability of mixed monotone systems of operator equations in an ordered normed space by using a generalized iteration method. The obtained results are then applied to prove existence ... -
Lyapunov Stability Theory for Dynamic Systems on Time Scales
(1992)By use of the necessary calculus and the fundamental existence theory for dynamic systems on time scales, in this paper, we develop Lyapunov’s second method in the framework of general comparison principle so that one can ... -
Existence of a Solution of a Fourier Nonlocal Quasilinear Parabolic Problem
(1992)The aim of this paper is to give a theorem about the existence of a classical solution of a Fourier third nonlocal quasilinear parabolic problem. To prove this theorem, Schauder’s theorem is used. The paper is a continuation ... -
First passage processes in Queuing system MX/Gr/1 with service delay discipline
(1992-02-01)This article deals with a general single-server bulk queueing system with a server waiting until the queue will reach level r before it starts processing customers. If at least r customers are available the server takes a ... -
On applications of Little's formula
(1993)In classical Little's formula L=λW used in queueing, the parameter λ serves as the intensity of the input process. In various applications this parameter may not be known. The author discusses important classes of modulated ... -
A Bulk Queueing System Under N-Policy With Bilevel Service Delay Discipline and Start-Up Time
(1993)The author studies the queueing process in a single-server, bulk arrival and batch service queueing system with a compound Poisson input, bilevel service delay discipline, start-up time, and a fixed accumulation level with ... -
Mathtype Version 3.0 A Software Review
(1993)Math Type is a mathematical equation editor in the Windows 3.1 environment. It lets you build up any kind of mathematical expression by using simple point-and-click techniques and then insert them into any Windows 3.1 ...