Relevant bibliographies by topics / Retard fractionnel

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Retard fractionnel'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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Journal articles on the topic "Retard fractionnel"

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Pskhu, A. V., and S. Sh Rekhviashvili. "Retarded Potentials in Fractional Electrodynamics." Moscow University Physics Bulletin 75, no. 4 (2020): 316–19. http://dx.doi.org/10.3103/s0027134920040098.

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Schiavone, S. E. "Fractional powers of the retarded potential." Applicable Analysis 42, no. 1-4 (1991): 145–55. http://dx.doi.org/10.1080/00036819108840038.

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Sikora, Beata. "Controllability criteria for time–delay fractional systems with a retarded state." International Journal of Applied Mathematics and Computer Science 26, no. 3 (2016): 521–31. http://dx.doi.org/10.1515/amcs-2016-0036.

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Abstract The paper is concerned with time-delay linear fractional systems with multiple delays in the state. A formula for the solution of the discussed systems is presented and derived using the Laplace transform. Definitions of relative controllability with and without constraints for linear fractional systems with delays in the state are formulated. Relative controllability, both with and without constraints imposed on control values, is discussed. Various types of necessary and sufficient conditions for relative controllability and relative U-controllability are established and proved. Num
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Jiang, Wei, and Zheng Xia Wang. "Image Denoising New Method Based on Fractional Partial Differential Equation." Advanced Materials Research 532-533 (June 2012): 797–802. http://dx.doi.org/10.4028/www.scientific.net/amr.532-533.797.

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Current total variation method excels at denoising and keeping the characteristics of image edges. However, its ability to retain texture details of smoothing region of image is poor. By combining fractional-order differential theory with total variation method, a new image denoising method is proposed. The new method, while effectively inheriting these advantages, uses the fractional-order differential amplitude-frequency and effectively. Simulation results which we have got show that the new method, on the one hand, can better suppress noise, keep the characteristics of image edges, and reta
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Nguyen, Van Quang, and Suchin Arunsawatwong. "Stability and Stabilization of Retarded Fractional Delay Differential Systems." IFAC Proceedings Volumes 41, no. 2 (2008): 3928–33. http://dx.doi.org/10.3182/20080706-5-kr-1001.00661.

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Dhandapani, Prasantha Bharathi, Jayakumar Thippan, Dumitru Baleanu, and Vinoth Sivakumar. "On a novel fuzzy fractional retarded delay epidemic model." AIMS Mathematics 7, no. 6 (2022): 10122–42. http://dx.doi.org/10.3934/math.2022563.

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<abstract><p>The traditional compartmental epidemic models such as SIR, SIRS, SEIR consider mortality rate as a parameter to evaluate the population changes in susceptible, infected, recovered, and exposed. We present a modern model where population changes in mortality are also considered as the parameter. The existing models in epidemiology always construct a system of the closed medium in which they assume that new birth, as well as new death, will not be possible. But in real life, such a concept will not be assumed to not exist. From our wide observation, we find that the chan
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Tafesse, Simegne, and Nagarajan Sukavanam. "Approximate Controllability of Fractional Order Retarded Semilinear Control Systems." International Journal of Modern Nonlinear Theory and Application 02, no. 03 (2013): 153–60. http://dx.doi.org/10.4236/ijmnta.2013.23020.

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Subramanian, Shivaram, and Hanif D. Sherali. "A fractional programming approach for retail category price optimization." Journal of Global Optimization 48, no. 2 (2009): 263–77. http://dx.doi.org/10.1007/s10898-009-9491-2.

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Kim, Daewook, and Jin-Mun Jeong. "Controllability for Retarded Semilinear Neutral Control Systems of Fractional Order in Hilbert Spaces." Mathematics 9, no. 6 (2021): 671. http://dx.doi.org/10.3390/math9060671.

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In this paper, we discuss the approximate controllability for a class of retarded semilinear neutral control systems of fractional order by investigating the relations between the reachable set of the semilinear retarded neutral system of fractional order and that of its corresponding linear system. The research direction used here is to find the conditions for nonlinear terms so that controllability is maintained even in perturbations. Finally, we will show a simple example to which the main result can be applied.
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Wang, Ying, Jingxiao Jiang, Zhi Cai, and Kaifeng Zhang. "Fractional Prospect Theory-Based Bidding Strategy of Power Retail Company in the Uniform Pricing Electricity Market under Price Uncertainty." Fractal and Fractional 7, no. 3 (2023): 210. http://dx.doi.org/10.3390/fractalfract7030210.

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This paper first proposes a fractional prospect theory-based method for modeling the bidding strategy of a power retail company in the uniform pricing electricity market under price uncertainty. Different from the traditional methods which assume that the retail company always bids completely rationally to maximize its individual payoffs, this paper introduces the prospect theory (PT) into the bidding model to reflect the impacts of psychological factors and subjective perceptions. To address the partial uncertainties brought by the continuous probability distribution in the value function, th
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Dissertations / Theses on the topic "Retard fractionnel"

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Bouldja, Nacera. "Slow Light in a SPS Photorefractive Crystal." Electronic Thesis or Diss., CentraleSupélec, 2020. http://www.theses.fr/2020CSUP0005.

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La lumière lente est le domaine scientifique qui s’intéresse aux processus non linéaires quipeuvent réduire la vitesse du groupe d’une impulsion lumineuse lorsqu’elle se propage dansun milieu. Cette technologie a récemment suscité un grand intérêt pour ses larges domainesd’application tels que le router optique, la photonique non linéaire et la spectroscopie.L’efficacité des systèmes à lumière lente est généralement mesurée par deux paramètresclés : le retard ou la vitesse du groupe et la bande passante de l’impulsion lumineuse desortie. Ce dernier est défini par le retard dit fractionnel qui
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Myung, Young-soo, and Dong-wan Tcha. "Return on Investment Analysis for Facility Location." Massachusetts Institute of Technology, Operations Research Center, 1991. http://hdl.handle.net/1721.1/5306.

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We consider how the optimal decision can be made if the optimality criterion of maximizing profit changes to that of maximizing return on investment for the general uncapacitated facility location problem. We show that the inherent structure of the proposed model can be exploited to make a significant computational reduction.
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Nguyen, Le Ha Vy. "Stability and stabilization of several classes of fractional systems with delays." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112387/document.

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Nous considérons deux classes de systèmes fractionnaires linéaires invariants dans le temps avec des ordres commensurables et des retards discrets. La première est composée de systèmes fractionnaires à entrées multiples et à une sortie avec des retards en entrées ou en sortie. La seconde se compose de systèmes fractionnaires de type neutre avec retards commensurables. Nous étudions la stabilisation de la première classe de systèmes à l'aide de l'approche de factorisation. Nous obtenons des factorisations copremières à gauche et à droite et les facteurs de Bézout associés: ils permettent de con
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Fioravanti, André. "H∞ analysis and control of time-delay systems by methods in frequency domain." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00627352.

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This thesis addresses the H∞ analysis and control of continuous commensurate time-delay systems by frequential methods. First, the asymptotic behavior of the chains of poles are studied, and the conditions of stability for neutral systems with poles approaching the imaginary axis are given. The same analysis is done for fractional systems. In the sequel, a numerical method able to locate all the stability windows as well as the unstable root-locus for classical and fractional system is given. We conclude the analysis part by providing the stability crossing curves of a class of distributed del
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Tenoutit, Mammar. "Définition et réglage de correcteurs robustes d'ordre fractionnaire." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2268.

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Les applications du calcul fractionnaire en automatique se sont considérablement développées ces dernières années, surtout en commande robuste. Ce mémoire est une contribution à la commande robuste des systèmes d'ordre entier à l'aide d'un correcteur PID d'ordre fractionnaire.Le conventionnel régulateur PID, unanimement apprécié pour le contrôle des processus industriels, a été adapté au cas fractionnaire sous la forme PInDf grâce à l'introduction d'un modèle de référence d'ordre non entier, réputé pour sa robustesse vis-à-vis des variations du gain statique.Cette nouvelle structure a été éten
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Bai, Jing. "Commande des Systèmes Multi-agent d'Ordre Fractionnaire." Thesis, Ecole centrale de Lille, 2015. http://www.theses.fr/2015ECLI0019/document.

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Ce travail concerne la commande des systèmes multi-agent d’ordre fractionnaire utilisant une topologie de communication fixe. Premièrement, la production en formation avec atténuation absolue et retard de communication est étudiée. Pour cela, une loi de commande et des conditions suffisantes sont proposées. Toutefois, dans certains scénarios, il est souhaitable que tous les agents atteignent la formation souhaitée tout en se déplacent en groupe, au lieu d’un rendez-vous à un point fixe. Ce cas sera traité en étudiant la production en formation avec atténuation relative et retard de communicati
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Karangwa, Innocent. "Comparing South African financial markets behaviour to the geometric Brownian Motion Process." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_4787_1363778247.

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<p>This study examines the behaviour of the South African financial markets with regards to the Geometric Brownian motion process. It uses the daily, weekly, and monthly stock returns time series of some major securities trading in the South African financial market, more specifically the US dollar/Euro, JSE ALSI Total Returns Index, South African All Bond Index, Anglo American Corporation, Standard Bank, Sasol, US dollar Gold Price , Brent spot oil price, and South African white maize near future. The assumptions underlying the&nbsp<br>Geometric Brownian motion in finance, namely the stationa
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Monteghetti, Florian. "Analysis and Discretization of Time-Domain Impedance Boundary Conditions in Aeroacoustics." Thesis, Toulouse, ISAE, 2018. http://www.theses.fr/2018ESAE0019.

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En aéroacoustique numérique, la condition aux limites d’impédance temporelle (TDIBC) peutêtre utilisée pour modéliser un matériau absorbant acoustique localement réactif. Elle permetde calculer l’effet d’un matériau sur le champ acoustique après une distance d’homogénéisation,ce qui s’avère suffisamment précis pour la prédiction de niveaux sonores. L’objectif général decette thèse est d’étudier les aspects physiques, mathématiques, et numériques des TDIBC, enpartant de la littérature physique.La première partie de cette thèse définit des conditions d’admissibilité pour une TDIBCnon-linéaire da
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Zamoum, Redouane. "Etude théorique des fluctuations de courant de l'admittance et de la densité d'états d'un nano-système en interaction." Phd thesis, Aix-Marseille Université, 2013. http://tel.archives-ouvertes.fr/tel-00881571.

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Dans notre thèse nous nous sommes intéressés à l'étude des fluctuations de courant, de l'admittance quantique ainsi que la densité d'états pour un nano système en interaction. Notre travail se divise en deux parties. Dans la première partie, nous avons étudié les fluctuations de courant et l'admittance pour un conducteur unidimensionnel, en décrivant le système par un liquide de Tomonaga-Luttinger. Nous avons utilisé les techniques de bosonisation et de refermionisation afin d'aboutir à des résultats exacts pour tous les régimes de température, toutes les valeurs de la tension appliquée et tou
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De, Brito Cardeliquio Caetano. "Contributions to the Theory of Time-Delay Systems : Stability and Stabilisation." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLC080/document.

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Le but de cette thèse est de présenter de nouveaux résultats sur l'analyse et la synthèse de systèmes à retard. Dans la première partie, nous étendons l'utilisation du système invariant d'ordre fini, appelé "système de comparaison", à la conception d'un contrôleur qui dépend non seulement de la sortie à l'heure actuelle et du délai maximum, mais également d'un nombre arbitraire de valeurs entre celles-ci. Cette approche nous permet d'augmenter le délai maximal stable sans exiger d'informations supplémentaires. Les méthodes présentées ici concernent la conception de systèmes de contrôle avec de
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Books on the topic "Retard fractionnel"

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Lameire, Norbert, Raymond Vanholder, and Wim Van Biesen. Clinical approach to the patient with acute kidney injury. Edited by Norbert Lameire. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199592548.003.0222_update_001.

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The prognosis of acute kidney injury (AKI) depends on early diagnosis and therapy. A multitude of causes are classified according to their origin as prerenal, intrinsic (intrarenal), and post-renal.Prerenal AKI means a loss of renal function despite intact nephrons, for example, because of volume depletion and/or hypotension.There is a broad spectrum of intrinsic causes of AKI including acute tubular necrosis (ATN), interstitial nephritis, glomerulonephritis, and vasculitis. Evaluation includes careful review of the patient’s history, physical examination, urinalysis, selected urine chemistrie
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Book chapters on the topic "Retard fractionnel"

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Matušů, Radek, Bilal Senol, Baris Baykant Alagoz, and Abdullah Ates. "Value Set-Based Numerical Analysis of Robust Stability for Fractional-Order Retarded Quasi-Polynomials with Uncertain Parameters and Uncertain Fractional Orders." In Lecture Notes in Networks and Systems. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-90321-3_3.

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Avanessoff, David, André R. Fioravanti, Catherine Bonnet, and Le Ha Vy Nguyen. "H ∞ -Stability Analysis of (Fractional) Delay Systems of Retarded and Neutral Type with the Matlab Toolbox YALTA." In Delay Systems. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-01695-5_21.

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Mazroa, Omnia Reda, and Mohamed Hassan Gadallah. "Branch and Bound Combined Design of Experiment Algorithm." In Practice, Progress, and Proficiency in Sustainability. IGI Global, 2024. https://doi.org/10.4018/979-8-3693-7117-6.ch006.

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The chapter introduces a novel hybrid approach that integrates orthogonal arrays and strong branching rules to solve Mixed Integer Problems using the branch-and-bound technique. For low to medium size problems, full orthogonal arrays are employed without the need to apply the strong branching rule because full-size arrays yield optimum solution consistently. For higher size problems, which return large number of continuous variables, the user uses fractional orthogonal arrays to simplify the solution process of the problem. Fractional arrays result in low number of function evaluations and pro
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El-Sayed, Ahmed M. A. "Nonlinear retarded functional differential equations of arbitrary (fractional) orders." In Equadiff 99. World Scientific Publishing Company, 2000. http://dx.doi.org/10.1142/9789812792617_0258.

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Bora, Onur, M. Sedat Kabdaşlı, Nuray Gedik, and Emel İrtem. "Floating Object Induced Hydro-morphological Effects in Approach Channel." In Fractional Calculus: New Applications in Understanding Nonlinear Phenomena. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815051933122030013.

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Transversal and diverging waves, return flows, propeller induced jet flows, and other hydrodynamic effects induced by a floating object may cause significant movement and/or suspension of bottom and bank sediments in the marine environment, especially in approach channels. Using the CFD (Computational Fluid Dynamics) process, the hydro-morphodynamic effects induced by a non-powered floating object navigating in an approach channel are investigated in this study. The approach channel dimensions depth, width, and channel slope are determined according to PIANC (2014) [1]. The floating object loc
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Jayananda Singh, Samom, Rajesh Kumar, and M. M. Dixit. "Study Analysis of Printed Monopole Antenna for C and X Band Application." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2022. http://dx.doi.org/10.3233/faia220525.

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In this design, dimension of the proposed antenna is 20 × 25 × 1.6 mm3 with FR4 substrate having circular patch fed with co-planar waveguide (CPW) that operates at numerous resonance frequencies between 5 and 10 GHz. The proposed antenna can be used well for low range communication transceivers in the C and X bands, according to simulation results. The optimal parameters for UWB antenna are the fractional bandwidth, which should be greater than 85%, and VSWR, which is another parameter. For the best and most efficient technique of using printed monopole antenna, the range of Ultra wideband (UW
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Nwajana, Augustine O., Emenike Raymond Obi, Gerald Kelechi Ijemaru, Emmanuel U. Oleka, and Destiny Chidi Anthony. "Fundamentals of RF/Microwave Bandpass Filter Design." In Handbook of Research on 5G Networks and Advancements in Computing, Electronics, and Electrical Engineering. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-6992-4.ch005.

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This chapter presents the basic approach of microwave bandpass filter design for 5G network applications. The chapter serves as a reference source to microwave stakeholders with little or no filter design experience. It should help them to design and implement their first filter device using microstrip technology. A three-pole Chebyshev bandpass filter with centre frequency of 2.6 GHz, fractional bandwidth of 3%, passband ripple of 0.04321 dB, and return loss of 20 dB has been designed. The designed filter implementation is based on the Rogers RT/Duroid 6010LM substrate with a 10.7 dielectric
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Vasistha, Anup Raju, Chandramouli H. Mahadevaswamy, Solomon H. Ebenuwa, and Augustine O. Nwajana. "Investigating Single- to Dual-Band Bandpass Filter Transformation for Wireless Communication Systems." In Advances in Wireless Technologies and Telecommunication. IGI Global, 2025. https://doi.org/10.4018/979-8-3693-8799-3.ch003.

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A simple technique for transforming a single-band bandpass filter (BPF) into a dual-band BPF is presented in this chapter. The method starts with a 2nd-order single-band BPF design, giving rise to a 4th-order dual-band BPF after the proposed transformation. Both filters are implemented using compact U-shaped microstrip resonator for improved device miniaturization. The proposed work features a centre frequency of 1.4 GHz for the single-band BPF, with a 3.4% fractional bandwidth. The dual-band BPF operates at 1.35 and 1.45 GHz for the first and second bands, respectively. The design implementat
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Chen, Fangfang, Huashu Hu, and Xingzhen Tang. "Fractional-Order Total Variation Image Restoration Based on Alternating Direction Method of Multiplier Algorithm." In Advances in Transdisciplinary Engineering. IOS Press, 2024. http://dx.doi.org/10.3233/atde240461.

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The application of computer image processing technology is more and more extensive, such as geological survey, disaster inspection, urban planning medical imaging, industry, agriculture, military and other fields. In the method of image denoising, the restoration model based on variational principle has been the focus of research in the field of digital image. In order to take into account the recovery of image edge and texture information and a more efficient optimization algorithm, a fractal-order total variational denoising method based on shearlet regularization terms is proposed in this p
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Pestovska, Zoia, and Mariia Rahulina. "MANAGEMENT OF THE INVESTMENT PORTFOLIO OF INDIVIDUALS DURING INFLATION." In The scientific paradigm in the context of technological development and social change. Publishing House “Baltija Publishing”, 2023. http://dx.doi.org/10.30525/978-9934-26-297-5-10.

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Inflation is usually defined as a constant increase in the average prices of goods and services in a certain region. Searching for ways to take inflation into account when choosing investment areas and developing an investment portfolio is an urgent problem today. The purpose of the study is to develop a methodology for choosing and improving an investment portfolio in the period of inflation. The following research methods are used in the work: analysis – when considering existing strategies for forming an investment portfolio and increasing its profitability, synthesis – when formulating the
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Conference papers on the topic "Retard fractionnel"

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Futas, Peter, Alena Pribulova, Jozef Petrik, Peter Peter Blasko, and Maria Mihalikova. "USE OF REGRESSION ANALYSIS AND SIMULATION TO OPTIMIZE THE COMPOSITION OF THE CAST IRON CHARGE." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/1.1/s04.58.

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Cast iron GG30 (EN-GJL-300C) has excellent mechanical properties and good machinability. It can be used in many industries such as hydraulics, engineering, automotive, oil and gas mining, and processing. It is suitable for the production of compressor and pump components. Return material, technological residue, iron scrap, fractional cast iron, liquid metal, and alloying components can be used as input raw materials in the production of cast iron, the first three were taken into account in the analysis. In practice, it is possible to choose their different ratio. At the same time, their chemic
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Lorenzo, Carl F., and Tom T. Hartley. "Energy Considerations for Fractional Elements." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-13247.

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This paper considers the energy aspects of fractional elements defined by the equation Ft=kλDtλ0xt. In contrast to the typically conservative assumption of classical physics that lead to the potential and kinetic energy expressions, a number of important non-conservative differences are exposed. Firstly, the considerations must be time-based rather than displacement or momentum based variables. Time based equations for energy behavior of fractional elements are presented and example applications are considered. The effect of fractional order on the energy requirements and energy return of thes
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Harrington, Mark W., Nicolas Fontaine, Mikael Mazur, and Daniel J. Blumenthal. "Optical Frequency Transfer Stability of 1E-15 at 1 Second Over Correlated Core Pairs in a 40 km 7-core Fiber Link." In Optical Fiber Communication Conference. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ofc.2023.m3j.3.

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We demonstrate a 40km stabilized optical frequency transfer system with fractional frequency stability of 1e-15 at 1s without single-core bidirectional propagation. Highly correlated cores of a 7-core fiber are used for signal transmission and return, mitigating uncorrelated phase fluctuations found in duplex approaches.
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Busher, Victor, Vasily Horoshko, Anatoly Shestaka, and Lubov Melnikova. "Fractional Integrated Dual Electromagnetic Retarder Controller for Tuning Internal Combustion Engines." In 2020 IEEE Problems of Automated Electrodrive. Theory and Practice (PAEP). IEEE, 2020. http://dx.doi.org/10.1109/paep49887.2020.9240785.

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Hristova, Snezhana, and Cemil Tunc. "On the stability properties of retarded Volterra integro-fractional differential equations with Caputo derivative." In SEVENTH INTERNATIONAL CONFERENCE ON NEW TRENDS IN THE APPLICATIONS OF DIFFERENTIAL EQUATIONS IN SCIENCES (NTADES 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0040076.

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Papoulia, Katerina D., Vassilis P. Panoskaltsis, and Igor Korovajchuk. "Some Equivalences in the Theory of Linear Viscoelasticity and Their Implications in Modeling and Simulation." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1191.

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Abstract A class of linear viscoelastic models is examined which accurately represent the response of many materials in a wide frequency range. These include power law and logarithmic type models, such as those of fractional order, the Kuhn model of linear viscoelasticity and generalizations thereof. An equivalence between the fractional element and the generalized Kuhn model is established. A continuous representation of these models is naturally available. It is shown that a discrete rheological representation, in the form of series of springs and dashpots, is also possible. This allows an i
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Yaşar, Aysu, and Kenan Terzioğlu. "Long Memory in Exchange Rate Volatility." In International Conference on Eurasian Economies. Eurasian Economists Association, 2021. http://dx.doi.org/10.36880/c13.02560.

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Considering rapidly evolving technology and effective markets, wherein information and news are quickly and effectively reflected in financial asset prices, the positions of investors trading in financial markets regarding financial asset prices vary according to the continuous stream of information coming to the market. However, markets are not fully efficient in terms of maintaining a long memory that enables future pricing estimates based on the past market price of the financial asset. Revealing the existence of a long memory structure is essential to the development of monetary policies s
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Reports on the topic "Retard fractionnel"

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Picciotto, Sol. The Contested Shaping of International Tax Rules: The Growth of Services and the Revival of Fractional Apportionment. Institute of Development Studies (IDS), 2021. http://dx.doi.org/10.19088/ictd.2021.014.

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The digitalisation of the economy has spotlighted fundamental flaws in international tax rules, which have been exacerbated since the 1970s with the wider shift to the services economy and the growth of international services. These systemic flaws have been more evident from the perspective of countries that are mainly importers of services that have tried to retain rights to tax profits at the source from which they derive. While they succeeded in retaining a wider scope for source taxation, key provisions have been subject to continuing conflicts and contestation over their formulation and i
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