Results 41 to 50 of about 152,870 (324)

Enumeration of a dual set of Stirling permutations by their alternating runs

, 2015
In this paper, we count a dual set of Stirling permutations by the number of alternating runs. Properties of the generating functions, including recurrence relations, grammatical interpretations and convolution formulas are studied.Comment: 8 ...
Ma, Shi-Mei, Wang, Hai-Na
core   +1 more source

Two problems of binomial sums involving harmonic numbers

Advances in Difference Equations, 2021
Two open problems recently proposed by Xi and Luo (Adv. Differ. Equ. 2021:38, 2021) are resolved by evaluating explicitly three binomial sums involving harmonic numbers, that are realized mainly by utilizing the generating function method and symmetric ...
Nadia N. Li, Wenchang Chu
doaj   +1 more source

Restricted Stirling permutations

, 2016
In this paper, we study the generating functions for the number of pattern restricted Stirling permutations with a given number of plateaus, descents and ascents.
Callan, David, Ma, Shi-Mei, Mansour, Toufik   +2 more
core   +1 more source

Stirling numbers revisited

Discrete Mathematics, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Scurr, Raymond, Olive, Gloria
openaire   +1 more source

Comparative Neuromechanical Wing‐Actuation Architectures of Flapping Flight in Insects, Hummingbirds, and Robots

Advanced Intelligent Systems, EarlyView.
Natural fliers achieve remarkable aerial performance through diverse wing neuromechanical systems integrating actuation, sensing, and control. This study synthesizes neuromechanical architectures in insects and hummingbirds, identifying two key functional types‐Dual Neural‐Mechanical Oscillator and Neurally‐modulated Mechanical Oscillator‐ and ...
Suyash Agrawal, Jean‐Michel Mongeau, Bret W. Tobalske, Christopher Rahn, Bo Cheng   +4 more
wiley   +1 more source

Overview of free-piston Stirling engine technology for space power application [PDF]

, 1987
An overview is presented of free-piston Stirling engine activities, directed toward space power applications. One of the major elements of the program is the development of advanced power conversion.
Slaby, Jack G.
core   +1 more source

Confessions of a Poverty Researcher: My Journey Through the Foothills of Scholarship

Australian Journal of Social Issues, EarlyView.
ABSTRACT This paper describes the key events, experiences and ideas that influenced the author's career as a poverty researcher. He describes how his early disillusion with economics was replaced by a spark of interest in social issues and how his migration from the UK to Australia in the mid‐1970s provided the impetus to begin what became a lifetime ...
Peter Saunders
wiley   +1 more source

On the 2-adic order of Stirling numbers of the second kind and their differences [PDF]

Discrete Mathematics & Theoretical Computer Science, 2009
Let $n$ and $k$ be positive integers, $d(k)$ and $\nu_2(k)$ denote the number of ones in the binary representation of $k$ and the highest power of two dividing $k$, respectively.
Tamás Lengyel
doaj   +1 more source

Congruences for Stirling numbers and Eulerian numbers [PDF]

Acta Arithmetica, 2008
In this paper, we establish some Fleck-Weisman type and Davis-Sun type congruences for the Stirling numbers and the Eulerian numbers.
Cao, Hui-Qin, Pan, Hao
openaire   +2 more sources

Study on Natural Gas Decarbonization Process Based on CO2 Desublimation Characteristics

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Natural gas decarbonization is a crucial processing step. In this study, the snow separation technology for removal of carbon dioxide in natural gas based on CO2 desublimation characteristics was introduced. The phase equilibrium calculation of CH4‐CO2 and N2‐CO2 system was carried out by using cubic equations of states (EOSs), and identified ...
Haiqin Wang, Jushi Cai, Zubin Zhang, Qishen Wu   +3 more
wiley   +1 more source