Results 101 to 110 of about 9,502,067 (333)
Refinements of the Bell and Stirling numbers [PDF]
Transactions on Combinatorics, 2017 We introduce new refinements of the Bell, factorial, and unsigned Stirling numbers of the first and second kind that unite the derangement, involution, associated factorial, associated Bell, incomplete Stirling, restricted factorial, restricted Bell, and $r$-derangement numbers (and probably more!).
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European Eating Disorders Review, EarlyView.ABSTRACT Objective The association between eating disorders (EDs) and both trauma exposure and posttraumatic stress disorder (PTSD) is well established. Existing evidence is inconclusive about the impact of trauma exposure and/or comorbid PTSD on ED treatment outcomes and if comorbid ED affects PTSD treatment outcomes.
Rachel E. Liebman +4 more
wiley +1 more source
Reciprocity for multirestricted Stirling numbers
Journal of Combinatorial Theory, Series A, 2006 AbstractMultirestricted Stirling numbers of the second kind count the number of partitions of a given set into a given number of parts, each part being restricted to at most a fixed number of elements. Multirestricted numbers of the first kind are then defined as elements of the matrix inverse to the matrix of corresponding multirestricted numbers of ...
Ji Young Choi +3 more
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Energy Science &Engineering, EarlyView.ABSTRACT The provision of drinking water as one of the basic human needs is of great importance now. Today, many people in different parts of the world, especially in remote and rural areas, do not have access to fresh water. These areas usually have a high potential for using renewable energy.
Saeed Ramazanian +3 more
wiley +1 more source
Study of Stirling Engine Efficiency Coefficient under Conditions Being Close to Real Ones
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2013 An absolute internal efficiency coefficient of the Stirling engine has been obtained without regenerator and with regenerator under conditions when van der Waals gas serves as a working medium.
R. M. Abramian
doaj
Search trees and Stirling numbers
Computers & Mathematics with Applications, 2004 AbstractSearch trees, specially binary search trees, are very important data structures thatcontributed immensely to improved performance of different search algorithms. In this paper, we express certain parameters of search trees in terms of Stirling numbers.
Mohammad Kaykobad +3 more
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Parametric Study on the Performance of Gas Springs in FPSE With Pneumatic Supporting System
Energy Science &Engineering, EarlyView.ABSTRACT The introduction of a pneumatic supporting system composed of gas springs and hydrostatic bearings in the free‐piston Stirling generator (FPSG) can effectively increase the power density of the nuclear space power plant. In this paper, a 1 kW FPSG with pneumatic supporting system was developed, and the working characteristics of dual gas ...
Lingxuan Kong +3 more
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Entropy, 2017 The configurational entropy of nanoscale solutions is discussed in this paper. As follows from the comparison of the exact equation of Boltzmann and its Stirling approximation (widely used for both macroscale and nanoscale solutions today), the latter ...
Andras Dezso, George Kaptay
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Test results of a Stirling engine utilizing heat exchanger modules with an integral heat pipe [PDF]
The Heat Pipe Stirling Engine (HP-1000), a free-piston Stirling engine incorporating three heat exchanger modules, each having a sodium filled heat pipe, has been tested at the NASA-Lewis Research Center as part of the Civil Space Technology Initiative ...
Brusk, Kevin D. +3 more
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The Group of Generalized Stirling Numbers
Advances in Applied Mathematics, 2001 AbstractIn this paper we provide an algebraic approach to the generalized Stirling numbers (GSN). By defining a group S that contains the GSN, we obtain a unified interpretation for important combinatorial functions like the binomials, Stirling numbers, Gaussian polynomials. In particular we show that many GSN are products of others.
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