Results 11 to 20 of about 868,338 (290)

Modeling of Price Changes for Standard Rooms in Polish Hotels (Krakow) [PDF]

open access: yesBìznes Inform, 2023
The tendencies in the development of the hotel industry in Europe and in Poland in particular are analyzed. Extensive and relevant statistical material was taken from booking sites as of November 2022.
Lysenko Olena V.
doaj   +1 more source

Periodic solutions in multivariate invariance arguments [PDF]

open access: yesOpuscula Mathematica, 2013
Inspired by the recent results of A. E. Abbas we determine continuous multivariate utility functions invariant with respect to a wide family of transformations related to the shift transformations.
Jacek Chudziak, Sebastian Wójcik
doaj   +1 more source

On Coefficient Inequalities of Starlike Functions Related to the q-Analog of Cosine Functions Defined by the Fractional q-Differential Operator

open access: yesFractal and Fractional, 2023
This article extends the study of q-versions of analytic functions by introducing and studying the association of starlike functions with trigonometric cosine functions, both defined in their q-versions.
Yusra Taj   +5 more
doaj   +1 more source

Sum of Exponential Model for Fitting Data

open access: yesEngineering Proceedings, 2023
As an approach to feature estimation, exponential fitting has attracted research interests in mathematical modeling. Semantic networks are used for numerous applications in computers, physics, and biology.
Ting-Cheng Chang, Min-Hao Wu, Ying Lin
doaj   +1 more source

Practical challenges in data‐driven interpolation: Dealing with noise, enforcing stability, and computing realizations

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley   +1 more source

A Novel Measure of Uncertainty in the Dempster-Shafer Theory

open access: yesIEEE Access, 2020
In the Dempster-Shafer theory, how to quantitatively evaluate the quality of information is an essential issue and also an open issue. Many of measures of uncertainty have been proposed in previous work, whereas some measures among them had been proved ...
Ke Wen   +3 more
doaj   +1 more source

Data‐driven performance metrics for neural network learning

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView., 2023
Summary Effectiveness of data‐driven neural learning in terms of both local mimima trapping and convergence rate is addressed. Such issues are investigated in a case study involving the training of one‐hidden‐layer feedforward neural networks with the extended Kalman filter, which reduces the search for the optimal network parameters to a state ...
Angelo Alessandri   +2 more
wiley   +1 more source

Improved Convolutional Neural Network Based on Fast Exponentially Linear Unit Activation Function

open access: yesIEEE Access, 2019
The activation functions play increasingly important roles in deep convolutional neural networks. The traditional activation functions have some problems such as gradient disappearance, neuron death and output offset, and so on.
Zheng Qiumei, Tan Dan, Wang Fenghua
doaj   +1 more source

Exponential-Based Testability Index Allocation and Feasibility Analysis Method

open access: yesIEEE Access, 2021
Existing mainstream testability index allocation (TIA) methods have the problem that the allocation value cannot reflect the index changes with the failure rate. One of the main reasons is that most of the existing methods use linear allocation functions,
Yixin Hu, Yigang Sun, Jiao Xue
doaj   +1 more source

Digital Light Processing of 2D Lattice Composites for Tunable Self‐Sensing and Mechanical Performance

open access: yesAdvanced Engineering Materials, EarlyView., 2023
The study presents the mechanical and in situ sensing performance of digital light processing‐enabled 2D lattice nanocomposites under monotonic tensile and repeated cyclic loading, and provides guidelines for the design of architectures suitable for strain sensors and smart lightweight structures.
Omar Waqas Saadi   +3 more
wiley   +1 more source

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