Results 51 to 60 of about 3,594,731 (231)

Operations research and development

open access: yesORiON, 2007
The paper begins with a discussion of the concepts "operations research" and "development." An overview is next given of the RDP (Reconstruction and Development Programme), which still embodies the vision of development in South Africa associated with ...
PduT Fourie
doaj   +1 more source

Operator inequalities dealing with operator equations [PDF]

open access: yesarXiv, 2011
In this paper, we study the existence of solutions of some kinds of operator equations via operator inequalities. First, we investigate characterizations of operator order $A\geqslant B >0$ and chaotic operator order log $A \geqslant$ log $B$ for positive definite operators $A$, $B$ in terms of operator equations, and generalize the results in \cite ...
arxiv  

On some algebras of truncated Hankel and asymmetric truncated Hankel operators [PDF]

open access: yesarXiv, 2021
In the last decade, a large amount of research has been concentrated on the operators living on the model space. Asymmetric truncated Toeplitz operators and asymmetric truncated Hankel operators are the natural generalization of truncated Toeplitz operators and truncated Hankel operators respectively.
arxiv  

The principle of local reflexivity for operator ideals and its implications [PDF]

open access: yesarXiv, 2001
We present a survey of past research activities and current results in constructing a mathematical framework describing the principle of local reflexivity for operator ideals and reveal further applications involving operator ideal products consisting of operators which factor through a Hilbert space.
arxiv  

Disrupting Illicit Supply Networks: New Applications of Operations Research and Data Analytics to End Modern Slavery [PDF]

open access: yes, 2018
Report from a 2017 National Science Foundation workshop on promising research directions for applications of operations research and data analytics toward the disruption of illicit supply networks like human trafficking.
Busch-Armendariz, Noël   +2 more
core   +1 more source

Approach to solve multi-criteria group decision-making problems by exponential operational law in generalised spherical fuzzy environment

open access: yesCAAI Transactions on Intelligence Technology, 2020
The construction of generalised spherical fuzzy number (GSFN) is a reliable philosophy to design and understanding of vagueness and impreciseness. In this study, at first, the authors have defined the generalised spherical fuzzy set and discussed its ...
Tipu Sultan Haque   +3 more
doaj   +1 more source

La Nova Scientia: Rewriting the History of Operational Research [PDF]

open access: yesarXiv, 2017
The accepted lore is that Operational Research traces its roots back to the First and Second World Wars, when scientific research was used to improve military operations. In this essay we provide a different perspective on the origins of Operational Research by arguing that these are deeply intertwined with the impressive technological advances in ...
arxiv  

Spectral Bounds for Polydiagonal Jacobi Matrix Operators [PDF]

open access: yesarXiv, 2013
The research on spectral inequalities for discrete Schrodinger Operators has proved fruitful in the last decade. Indeed, several authors analysed the operator's canonical relation to a tridiagonal Jacobi matrix operator. In this paper, we consider a generalisation of this relation with regards to connecting higher order Schrodinger-type operators ...
arxiv  

Health care operations management [PDF]

open access: yes, 2012
Health care operations management has become a major topic for health care service providers and society. Operations research already has and further will make considerable contributions for the effective and efficient delivery of health care services ...
Carter, M.W., Hans, E.W., Kolisch, R.
core   +3 more sources

A comparative study of the capability of alternative mixed integer programming formulations

open access: yesTechnological and Economic Development of Economy, 2018
In selecting the best mixed integer linear programming (MILP) formulation the important issue is to figure out how to evaluate the performance of each candidate formulation in terms of selected criteria.
Baris Kececi   +3 more
doaj   +1 more source

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