Results 51 to 60 of about 69,082 (292)

The metric dimension and metric independence of a graph [PDF]

open access: yes, 2001
A vertex x of a graph G resolves two vertices u and v of G if the distance from x to u does not equal the distance from x to v. A set S of vertices of G is a resolving set for G if every two distinct vertices of G are resolved by some vertex of S. The
Currie, James, Oellerman, Ortrud R.
core  

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

A new model for solving fuzzy linear fractional programming problem with ranking function

open access: yesJournal of Applied Research on Industrial Engineering, 2017
In this paper, we studied fuzzy linear fractional programming (FLFP) problems with trapezoidal fuzzy numbers where the objective functions are fuzzy numbers and the constraints are real numbers.
Sapan Kumar Das, Tarni Mandal
doaj   +1 more source

Componentwise Fractional Programming with Application to Resource Allocation [PDF]

open access: yesModeling, Identification and Control, 1983
A fractional programming problem is considered of the maximization of the ratio of a concave and a convex function, with each variable occurring in a single convex component constraint.
Kåre M. Mjelde
doaj   +1 more source

An LFT/SDP approach to the uncertainty analysis for state [PDF]

open access: yes, 2002
A state estimator is an algorithm that computes the current state of a time-varying system from on-line measurements. Physical quantities such as measurements and parameters are characterised by uncertainty.
Nagar, A, Powell, R S
core  

SDP Duals without Duality Gaps for a Class of Convex Minimax Programs

open access: yes, 2013
In this paper we introduce a new dual program, which is representable as a semi-definite linear programming problem, for a primal convex minimax programming model problem and show that there is no duality gap between the primal and the dual whenever the ...
Jeyakumar, V., Vicente-Perez, J.
core   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Generalized Heptagonal Membership Function for Fully Fuzzy Linear Fractional Programming Problems

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences
    Identifying the optimum solution that satisfies the restrictions and maximizes or minimizes the objective function is the aim of fully fuzzy fractional programming (FFFLP). Due to the inclusion of both fuzzy parameters and fractional variables, this
Israa Hadi, Iden H. Al Kanani
doaj   +1 more source

The tolerance approach in multiobjective linear fractional programming [PDF]

open access: yes, 1997
When solving a multiobjective programming problem by the weighted sum ap- proach, weights represent the relative importance associated to the objectives.
Arévalo Quijada, María Teresa   +2 more
core  

The power of linear programming for general-valued CSPs

open access: yes, 2014
Let $D$, called the domain, be a fixed finite set and let $\Gamma$, called the valued constraint language, be a fixed set of functions of the form $f:D^m\to\mathbb{Q}\cup\{\infty\}$, where different functions might have different arity $m$.
Kolmogorov, Vladimir   +2 more
core   +3 more sources

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