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Bilel Hassen,Monia El Bour 한국해양과학기술원 2022 Ocean science journal Vol.57 No.4
Antibiotics are a growing contaminant of substantial concern, principally in the aquatic environment, because of their pseudo-persistence and biological activity, and they have received a lot of attention in the recent decade. The spread of antibiotic-resistant bacteria and their antibiotic-resistant genes have showed expansion in most natural surroundings, including water, soil, and sediments, causing and presenting health problems for humans and animals. The ecological impact and environmental concerns of antibioresistance in aquatic and littoral habitats are highlighted in this review. Antibiotic pollution levels in marine, coastal water lakes, and river water flowing into the Mediterranean Sea were reported in all gathered data. Likewise, this paper showed that there was a significant lack of data and information about this pollution in seawater and general aquatic environments, revealing a substantial difficulty in following and studying these new qualities of pollutants and their main fates in natural environments. Also, their impact on the marine and lake environment in terms of the emergence of drug-resistant bacteria and drug-resistant genes was described.
A note on the multifractal Hewitt-Stromberg measures in a probability space
Bilel Selmi 강원경기수학회 2020 한국수학논문집 Vol.28 No.2
In this note, we investigate the multifractal analogues of the Hewitt-Stromberg measures and dimensions in a probability space.
TCAD Simulations of Graphene Field-effect Transistors Based on the Quantum Capacitance Effect
Bilel Hafsi,A¨ımen Boubaker,Naoufel Isma¨ıl,Adel Kalboussi,Kamal Lmimouni 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.67 No.7
In this paper, the results of a comparative study between experimental measurements and technology computer-aided design (TCAD) simulations of graphene field-effect transistors (GFET) are presented. Our simulations were performed to study the electrical properties of few-layer graphene, and the physical approach to the simulation tools is described by using the basics of band theory, Poisson’s equation, the continuity equation and the drift diffusion equations that are suitable for devices with small active regions. A correct formulation of the carrier density was performed to take into account the quantum capacitance. The modeled current was compared to the measured results for a prototype and was shown to be accurate and to have a predictive behavior.
Pseudo Colorization Using CNN Model For X-ray Baggage Scan Image
Bilel Yagoub,Hyun Soo Kang 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.11
The X-ray scanner displays an image that contains the different levels of radiation absorbed by the materials based on atomic numbers, so it forms a grayscale image that shows the shapes of the items being examined. For that, we use a convolutional neural network (CNN) to separate the material by colorization such as organic, non-organic, and metal to facilitate the process of inspections for luggage or cargoes. in this paper we propose a CNN network for pseudo-colorization, we use a dataset of Rapiscan scanner which contain 129275 images with encoder-decoder CNN architecture.
SOME RESULTS ABOUT THE REGULARITIES OF MULTIFRACTAL MEASURES
Selmi, Bilel The Kangwon-Kyungki Mathematical Society 2018 한국수학논문집 Vol.26 No.2
In this paper, we generelize the Olsen's density theorem to any measurable set, allowing us to extend the main results of H.K. Baek in (Proc. Indian Acad. Sci. (Math. Sci.) Vol. 118, (2008), pp. 273-279.). In particular, we tried through these results to improve the decomposition theorem of Besicovitch's type for the regularities of multifractal Hausdorff measure and packing measure.
PROJECTIONS AND SLICES OF MEASURES
Selmi, Bilel,Svetova, Nina Korean Mathematical Society 2021 대한수학회논문집 Vol.36 No.2
We consider a generalization of the L<sup>q</sup>-spectrum with respect to two Borel probability measures on ℝ<sup>n</sup> having the same compact support, and also study their behavior under orthogonal projections of measures onto an m-dimensional subspace. In particular, we try to improve the main result of Bahroun and Bhouri [4]. In addition, we are interested in studying the behavior of the generalized lower and upper L<sup>q</sup>-spectrum with respect to two measures on "sliced" measures in an (n - m)-dimensional linear subspace. The results in this article establish relations with the L<sup>q</sup>-spectrum with respect to two Borel probability measures and its projections and generalize some well-known results.
C. Bilel,M.M. Habchi,A. Ben Nasr,I. Guizani,A. Rebey,B. El Jani 한국물리학회 2016 Current Applied Physics Vol.16 No.3
We present a self-consistent calculation combined with the 16-band anticrossing model in order to investigate the electronic and optical properties of n-doped GaNAsBi/GaAs multiple-QWs operating at 1.55 mm. Optoelectronic features of these quantum structures seem advantageous for the design of photodetector devices. We have found that doping induces a blue shift of the fundamental transition energy for the uncoupled double-QWs with the barrier width Lb ¼ 12 nm. This transition energy shows a red shift when the doped DQWs are coupled (Lb ¼ 2 nm). An applied electric field favors further this shift. The coupling and Stark effects on the spatial distribution of confined electrons density are discussed. The absorption coefficient for the coupled 4 nm GaN.04As.89Bi.07/GaAs DQWs is enhanced compared to the undoped or uncoupled DQWs. Finally, we have examined the dependence of the absorption magnitude on the doping density and electric field for different values of wells number.
The measurability of Hewitt-Stromberg measures and dimensions
Zied Douzi,Bilel Selmi,Haythem Zyoudi 대한수학회 2023 대한수학회논문집 Vol.38 No.2
The aim of this paper is to study the descriptive set-theoretic complexity of the Hewitt-Stromberg measure and dimension maps.