49,344 research outputs found
q-Differential equations for q-classical polynomials and q-Jacobi-Stirling numbers
Full text linkWe introduce, characterise and provide a combinatorial interpretation for the so-called q-Jacobi–Stirling numbers.
This study is motivated by their key role in the (reciprocal) expansion of any power of a second order
q-differential operator having the q-classical polynomials as eigenfunctions in terms of other even order operators,
which we explicitly construct in this work. The results here obtained can be viewed as the q-version of
those given by Everitt et al. and by the first author, whilst the combinatorics of this new set of numbers is a
q-version of the Jacobi–Stirling numbers given by Gelineau and the second author
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Network Q
No full textA press release from Network Q announcing that they will begin featuring Brian McNaught, a gay columnist and author, for a monthly segment
Network Q
No full textA press release from Network Q announcing that they will begin featuring Brian McNaught, a gay columnist and author, for a monthly segment
Tobin's Q and Financial Policy
Full text linkRecent research in macroeconomics has emphasized the importance of linking the financial and real sectors and the need for working with optimizing models. Tobin’s Q model of investment would appear to provide a framework that can satisfy these two criteria. In contrast to the original presentation of the Q model, the formal development has not recognized that the firm actively participates in a number of financial markets; in this broader context, we show that Q is likely to be an uninformative and possibly misleading signal for investment expenditures . We then endeavor to turn this negative theoretical result to positive advantage in resolving a number of empirical problems with Q models, but the modifications dictated by the theory receive little support from the data.
sj-docx-1-han-10.1177_15589447231160211 – Supplemental material for Opioid Consumption After Upper Extremity Surgery: A Systematic Review
No full textSupplemental material, sj-docx-1-han-10.1177_15589447231160211 for Opioid Consumption After Upper Extremity Surgery: A Systematic Review by Minh N. Q. Huynh, Morgan Yuan, Lucas Gallo, Oluwatobi R. Olaiya, Jouseph Barkho and Matthew McRae in HAND</p
Faces and Places in Fashion: Han Feng
No full textPart presentation, part Q&A, FIT's "Faces & Places in Fashion" lecture series is an opportunity to connect students and the public alike to the pulse of the fashion industry in an open and conversational setting.Chinese-born, FIT graduate Han Feng briefly describes her career in fashion design and then discusses her assignment as costume designer for Anthony Minghella's production of Madame Butterfly. Her talk is accompanied by slides of the Butterfly production
Polinomios ortogonales respecto a medidas q-discretas. Aplicaciones
Full text linkLa Teoría de funciones especiales y, más concretamente, la Teoría de polinomios ortogonales constituyen unas de las fuentes más apreciadas por la cantidad de aplicaciones tanto en la matemática y como en la física con la que éstas aparecen relacionadas. Entre ellas se encuentran la teoría de números, el análisis numérico, la teoría de operadores, la teoría de representación de grupos y la mecánica cuántica, por citar algunas. En esta memoria se han desarrollado, dentro de la variedad de problemas que se pueden encontrar relacionados con dichas teorías, los siguientes problemas que están íntimamente vinculados con algunas de las áreas antes mencionadas: 1) Estudio del problema de factorización de la ecuación de Nikiforov y Uvarov y su aplicación a la construcción de distintos modelos de q- osciladores armónicos y sus correspondientes álgebras dinámicas. 2) Estudio y desarrollo de distintos aspectos de la teoría de polinomios ortogonales clásicos y semiclásicos en redes no uniformes. En particular el estudio de ciertas propiedades que permitan caracterizar a dichas familias. 3) Finalmente se estudian algunos ejemplos concretos de q-polinomios de especial interés como los q-polinomios de Racah y los q-polinomios de tipo Kral
A Q-learning based multi-strategy integrated artificial bee colony algorithm with application in unmanned vehicle path planning
No full textArtificial bee colony (ABC) is a prominent algorithm that offers great exploration capabilities among various meta-heuristic algorithms. However, its monotonous and one-dimensional search strategy limits its searching performance in the solving process. Thus, to address this issue, a Q-learning based multi-strategy integrated ABC algorithm (QMABC) is proposed. In the QMABC, multiple search strategies are proposed to utilize different individual experiences and search approaches for solution updates. Then, Q-learning is employed for strategy selection. In comparison to previous studies, this paper introduces more effective state and action configurations within the framework of Q-learning. To evaluate the performance of the QMABC, CEC 2017 benchmark functions are adopted to compare it to different meta-heuristic algorithms including ABC based and non-ABC based algorithms. Moreover, applications in path planning are implemented to further verify the effectiveness of the QMABC. Overall, it should be highlighted that the proposed QMABC demonstrates superiority in both numerical and practical experiments.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Discrete Mathematics and Optimizatio
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