New family of triangular norms for decreasing generators in the form of a logarithm of a linear fractional function

Author(s):  
Tatiana Ledeneva
2012 ◽  
Vol 1 (4) ◽  
pp. 298 ◽  
Author(s):  
Andrew Oyakhobo Odior

Linear fractional programming problems are useful tools in production planning, financial and corporate planning, health care and hospital planning and as such have attracted considerable research interest. The paper presents a new approach for solving a fractional linear programming problem in which the objective function is a linear fractional function, while the constraint functions are in the form of linear inequalities. The approach adopted is based mainly upon solving the problem algebraically using the concept of duality and partial fractions and an example is given to clarify the developed method.


2014 ◽  
Vol 996 ◽  
pp. 866-871
Author(s):  
Harri Lille ◽  
Jakub Kõo ◽  
Alexander Ryabchikov ◽  
Renno Reitsnik ◽  
Fjodor Sergejev ◽  
...  

The investigated brush-plated gold and silver coatings are used for repairing the commutators of generators and sliding contacts. Tensile residual stresses generated in the plated coatings were determined by the curvature method and by instrumented indentation testing of a thin-walled open ring substrate, as described in our earlier papers. These stresses relax over time and their dependence on relaxation time was approximated by a linear-fractional function. The Young ́s modulus and nanohardness of the coatings were determined. The surface structure and cross section of the coated substrates were studied.


2021 ◽  
pp. 123-138
Author(s):  
Татьяна Михайловна Леденева

Данная статья представляет результаты исследования аддитивных генераторов в форме дробно-линейных функций. Определены ограничения на коэффициенты возрастающих и убывающих генераторов. Показано, что обратные функции при выполнении определенных условий также являются аддитивными генераторами. Для каждого случая найдены соответствующие треугольные нормы или конормы. Установлено, что треугольные нормы и конормы, полученные на основе дробно-линейных функций, а также двойственные им имеют одинаковую структуру. Определены значения параметров, при которых получаются известные семейства. По сути, предложено новое семейства двойственных треугольных норм и конорм, которое обобщает известные семейства. This article presents the results of the study of additive generators in the form of fractional linear functions. Restrictions on the coefficients of increasing and decreasing generators are determined. It is shown that inverse functions under certain conditions are also additive generators. For each case, the corresponding triangular norms or conorms are found. It is established that triangular norms and conorms obtained on the basis of fractional linear functions, as well as dual ones, have the same structure. The values of the parameters at which the known families are obtained are determined. In fact, a new family of dual triangular norms and conorms is proposed, which generalizes the known families.


2010 ◽  
Vol 20 (07) ◽  
pp. 2045-2070 ◽  
Author(s):  
IRYNA SUSHKO ◽  
LAURA GARDINI

We recall three well-known theorems related to the simplest codimension-one bifurcations occurring in discrete time dynamical systems, such as the fold, flip and Neimark–Sacker bifurcations, and analyze these bifurcations in presence of certain degeneracy conditions, when the above mentioned theorems are not applied. The occurrence of such degenerate bifurcations is particularly important in piecewise smooth maps, for which it is not possible to specify in general the result of the bifurcation, as it strongly depends on the global properties of the map. In fact, the degenerate bifurcations mainly occur in piecewise smooth maps defined in some subspace of the phase space by a linear or linear-fractional function, although not necessarily only by such functions. We also discuss the relation between degenerate bifurcations and border-collision bifurcations.


2017 ◽  
Vol 267 (1-2) ◽  
pp. 135-151
Author(s):  
Wassila Drici ◽  
Fatma Zohra Ouail ◽  
Mustapha Moulaï

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