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Federated Learning’s Role in Next-Gen TV Ad Optimization

Computers, Materials & Continua 2025年第1期82卷 675-712页

作者： Gabriela Dobrita simona-Vasilica Oprea Adela Bâra Department of Economic Informatics and Cybernetics Bucharest University of Economic StudiesBucharest010374Romania

In the rapidly evolving landscape of television advertising,optimizing ad schedules to maximize viewer engagement and revenue has become *** methods often operate in silos,limiting the potential insights gained from broader data analysis due to concerns over privacy and data *** article introduces a novel approach that leverages Federated Learning(FL)to enhance TV ad schedule optimization,combining the strengths of local optimization techniques with the power of global Machine Learning(ML)models to uncover actionable insights without compromising data *** combines linear programming for initial ads scheduling optimization with ML—specifically,a K-Nearest Neighbors(KNN)model—for predicting ad spot *** into account the diversity and the difficulty of the ad-scheduling problem,we propose a prescriptivepredictive approach in which first the position of the ads is optimized(using Google’s OR-Tools CP-sAT)and then the scheduled position of all ads will be the result of the optimization ***,this output becomes the target of a predictive task that predicts the position of new entries based on their characteristics ensuring the implementation of the scheduling at large scale(using KNN,Light Gradient Boosting Machine and random Forest).Furthermore,we explore the integration of FL to enhance predictive accuracy and s.rategic insight across different broadcasting networks while preserving data *** FL approach resulted in 8750 ads being precisely matched to their optimal category placements,showcasing an alignment with the intended diversity ***,there was a minimal deviation observed,with 1133 ads positioned within a one-category variance from their ideal placement in the original dataset.

关键词： Ad scheduling prescriptive-predictive approach federated learning KNN

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ROBUsT HIGH ORDER CONVERGENCE OF AN OVERLAPPING sCHWARZ METHOD FOR sINGULARLY PERTURBED sEMILINEAR REACTION-DIFFUsION PROBLEMs

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Journal of Computational Mathematics 2013年第5期31卷 509-521页

作者： s. Chandra sekhara ra~ sunil Kumar Department of Mathematics Indian Institute of Technology Delhi Hauz khas New Delhi-110016 India

In this article we propose an overlapping schwarz domain decomposition method for solving a singularly perturbed semilinear reaction-diffusion problem. The solution to this problem exhibits boundary layers of width O（√ε ln（1/√ε）） at both ends of the domain due to the presence of singular perturbation parameter ε. The method splits the domain into three overlapping subdomains, and uses the Numerov or Hermite scheme with a uniform mesh on two boundary layer subdomains and a hybrid scheme with a uniform mesh on the interior subdomain. The numerical approximations obtained from this method are proved to be almost fourth order uniformly convergent （in the maximum norm） with respect to the singular perturbation parameter. Furthermore, it is proved that, for small ε, one iteration is sufficient to achieve almost fourth order uniform convergence. Numerical experiments are given to illus.rate the theoretical order of convergence established for the method.

关键词： singular perturbation semilinear reaction-diffusion Overlapping schwarzmethod Robust convergence Numerov scheme.

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基于重复的美——raúl sánchez访谈录

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室内设计与装修 2021年第11期 91-93页

作者： raúl sánchez raúl sánchez建筑事务所巴塞罗那Elisava设计学院

id+c:请简单介绍一下您自己以及您的教育背景?raúl sánchez:我出生和成长在西班牙南部的一个小镇。在童年和青少年时期,我和建筑设计没有太大关系。实际上,学习建筑是一个很偶然的机会,所谓机缘巧合。我花了一段时间才意识到我在哪里... 详细信息

id+c:请简单介绍一下您自己以及您的教育背景?raúl sánchez:我出生和成长在西班牙南部的一个小镇。在童年和青少年时期,我和建筑设计没有太大关系。实际上,学习建筑是一个很偶然的机会,所谓机缘巧合。我花了一段时间才意识到我在哪里,我想要什么,并理解建筑;但一旦投入其中,建筑就让我产生了一种非常强烈的激情,直到今天仍在增长。建筑是能让我真正感受和享受的东西。

关键词：建筑设计机缘巧合青少年时期访谈录西班牙

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MgO-based adsorbents for CO2 adsorption:Influence of structural and textural properties on the CO_2 adsorption performance

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Journal of Environmental sciences 2017年第7期29卷 418-428页

作者： Gutiérrez-Bonilla Elvira Granados-Correa Francisco sánchez-Mendieta Víctor Morales-Luckie raúl Alberto National Institute of Nuclear Research Department of ChemistryA.P.18-1027Col.EscandonMigud Hidalgo DelegationZip Code 1180 Mexico D.F.Mexico Autonomous University of Mexieo state Faculty of ChemistryColon avenueintersection with ride Tollocan s/n TolucaMexicoMexico

A series of MgO-based adsorbents were prepared through solution–combustion synthesis and ball-milling *** prepared MgO-based powders were characterized using X-ray diffraction,scanning electron microscopy,N_2 physisorption measurements,and employed as potential adsorbents for CO_2 *** influence of structural and textural properties of these adsorbents over the CO_2 adsorption behaviour was also *** results showed that MgO-based products prepared by solution–combustion and ball-milling processes,were highly porous,fluffy,nanocrystalline structures in nature,which are unique physico-chemical properties that significantly contribute to enhance their CO_2 *** was found that the MgO synthesized by solution combustion process,using a molar ratio of urea to magnesium nitrate（2：1）,and treated by ball-milling during 2.5 hr（MgO-BM2.5h）,exhibited the maximum CO_2 adsorption capacity of 1.611 mmol/g at 25℃ and 1 atm,mainly via *** CO_2 adsorption behaviour on the MgO-based adsorbents was correlated to their improved specific surface area,total pore volume,pore size distribution and *** reusability of synthesized MgO-BM2.5h was confirmed by five consecutive CO_2adsorption–desorption times,without any significant loss of performance,that supports the potential of MgO-based *** results confirmed that the special features of MgO prepared by solution–combustion and treated by ball-milling during 2.5 hr are favorable to be used as effective MgO-based adsorbent in post-combustion CO_2 capture technologies.

关键词： CO_2 adsorption MgO-based adsorbents Porous materials solution–combustion synthesis Ball-milling process Textural properties

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soil quality assessment for desertification based on multi-indicators with the best-worst method in a semi-arid ecosystem

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Journal of Arid Land 2023年第7期15卷 779-796页

作者： Orhan DENGİZ İnci DEMİraĞTUraN Department of soil science and Plant Nutrition Faculty of AgricultureOndokuz Mayıs UniversitySamsun-55139Turkey Department of Geography Faculty of EconomicAdministrative and Social SciencesSamsun UniversitySamsun-55030Turkey

since there are some signs of land degradation and desertification showing how soil sustainability is threatened, it is crucial to create a soil quality index(sQI) model in the semi-arid ?orum Basin, situated between the Black sea and Anatolia Region, Central Turkey. The primary aims of the study are:(1) to determine sQI values of the micro-basin in terms of land degradation and ***, the best-worst method(BWM) was used to determine the weighting score for each parameter;(2) to produce the soils' spatial distribution by utilizing different geostatistical models and GIs(geographic information system) techniques;and(3) to validate the obtained sQI values with biomass reflectance values. Therefore, the relationship of RE-OsAVI(red-edge optimized soil-adjusted vegetation index) and NDVI(normalized difference vegetation index) generated from sentinel-2A satellite images at different time series with soil quality was examined. Results showed that sQI values were high in the areas that had almost a flat and slight slope. Moreover, the areas with high clay content and thick soil depth did not have salinity problems, and were generally distributed in the middle parts of the basin. However, the areas with a high slope, poor vegetation, high sand content, and low water holding capacity had low sQI ***, a statistically high positive correlation of RE-OsAVI and NDVI indices with soil quality was found, and NDVI had the highest correlative value for June(R~2=0.802) compared with RE-OsAVI.

关键词： soil quality land degradation desertification best-worst method remote sensing

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Optically invariant InGaN nanowire light-emitting diodes on flexible subs.rates under mechanical manipulation

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npj Flexible Electronics 2019年第1期3卷 120-125页

作者： Mohsen Asad Renjie Wang Yong-Ho ra Pranav Gavirneni Zetian Mi William s.Wong Department of Electrical and Computer Engineering University of WaterlooWaterlooON N2L 3G1Canada Waterloo Institute for Nanotechnology University of WaterlooWaterlooON N2L 3G1Canada Department of Electrical and Computer Engineering McGill UniversityMontrealQC H3A 0E9Canada Department of Electrical and Computer Engineering University of MichiganAnn ArborMI 48109USA

The integration of GaN-based light-emitting diodes(LEDs)onto flexible platforms provides opportunities for conformal lighting,wearable electronics,and bendable *** this technology may enhance the functionality of the light source,the development of flexible GaN LEDs suffers from performance degradation,when mechanical bending is applied during operation.A unique approach to eliminate the degradation employs dot-in-wire structures,using cylindrical light-emitting heterostructures that protrude above the flexible platform,separating the active light-emitting region from the bending ***,we demons.rate the optical enhancement of nanowire light emitters by changing the geometric orientation within a 1×1 mm^(2) array of nanowires on a flexible platform through bending of the subs.rate *** flexible structures were achieved by transferring GaN nanowire LEDs from sapphire subs.rates onto flexible polyethylene terephthalate(PET)using a“paste-and-cut”integration *** I–V characteristics of the nanowire LEDs showed negligible change after integration onto the PET,with a turn-on voltage of 2.5 V and a forward current of 400μA at 4 V.A significant advantage for the nanowire devices on PET was demons.rated by tilting the LEDs through subs.rate bending that increased the electroluminescence(EL)intensity,while the I–V characteristics and the EL peak position remained *** finite-element analysis and three-dimensional finite-difference time-domain modeling,it was determined that tilting the protruding devices changed the effective distance between the structures,enhancing their electromagnetic coupling to increase light output without affecting the electrical properties or peak emission wavelength of the LEDs.

关键词： diodes sapphire light

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AAsLD practice guidance on drug,herbal,and dietary supplement-induced liver injury:also useful for hepatobiliary surgeons

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Hepatobiliary surgery and Nutrition 2023年第5期12卷 746-751页

作者： Jose María Pinazo-Bandera Miren García-Cortés.raúl J.Andrade service of Gastroenterology and Hepatology University Hospital Virgen de la VictoriaInstituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BionandUniversidad de MálagaMálagaSpain Centro de Investigación Biomédico en Red Enfermedades Hepáticas y Digestivas(CIBERehd) MadridSpain

Drug-induced liver injury(DILI)is a term used to describe an unexpected liver reaction to drugs,but also to herbal products and dietary supplements(HDs).In the current therapeutic armamentarium,only a small number of available drugs are still capable of causing liver damage in *** include,in addition to paracetamol-the prototypical example of this group-niacin(now rarely used to treat hypercholesterolaemia),intravenous methotrexate and probably ketamine(an intravenous hypnotic used in critically ill patients for rapid sequence induction)(1).

关键词： Drug-induced liver injury(DILI) hepatotoxicity causality assessment Revised Electronic Causality Assessment Method(RECAM)

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Periodic solutions of Evolution Variational Inequalities—a Method of Guiding Functions

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Chinese Annals of Mathematics,series B 2009年第3期30卷 261-272页

作者： samir ADLY Daniel GOELEVEN Michel THra Département de Math'ematiques et Informatique Laboratoire XLIM(Unité Mixte 6172 du CNRS)Université de Limoges123 Avenue A.Thomas87060 Limoges CedexFrance. Laboratoire d' Informatique et de Mathématiques Université de La Réunion97400 Saint-DenisFrance.

This paper focuses on a part of the presentation given by the third author at the shanghai Forum on Industrial and Applied Mathematics(shanghai 2006).It is related to the existence of a periodic solution of evolution ... 详细信息

关键词： Variational inequality Differential inclusion Topological degree Guiding function Periodic solution

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Existence Results for a Class of Periodic Evolution Variational Inequalities

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Chinese Annals of Mathematics,series B 2007年第6期28卷 629-650页

作者： samir ADLY Daniel GOELEVEN Michel THra DMI-XLIM UMR-CNRS 6172Université de Limoges123 Avenue A.Thomas87060 Limoges CedexFrance. IREMIA Université de La Réunion97400 Saint-DenisFrance.

In this paper, using the Brouwer topological degree, the authors prove an existence result for finite variational inequalities. This approach is also used to obtain the existence of periodic solutions for a class of e... 详细信息

关键词： Variational inequalities Differential inclusions Topological degree Guiding functions Periodic solutions

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Hölder,sobolev,weak-type and BMO estimates in mixed-norm with weights for parabolic equations

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science China Mathematics 2021年第1期64卷 129-154页

作者： Pablo raúl stinga José L.Torrea Department of Mathematics Iowa State UniversityAmesIA50011USA Departamento de Matemáticas Universidad Autónoma de MadridMadrid28049Spain

We prove weighted mixed-norm Lqt(W2,px)and Lqt(C2,αx)estimates for 10,x∈Rn.x∈Rn,The coefficients a(t)=(aij(t))are just bounded,meas.rable,symmetric and uniformly ***,we show strong,weak type and BMO-sobolev estimat... 详细信息

We prove weighted mixed-norm Lqt(W2,px)and Lqt(C2,αx)estimates for 1stimates for q=1,L∞t(Lpx)−BMOt(W2,px)and L∞t(Cαx)−BMOt(C2,xx),and *** formulas for derivatives,for the solutions u=u(t,x)to parabolic equations of the form∂tu−aij(t)∂iju+u=f,t∈,x∈n and for the Cauchy problem{∂tv−aij(t)∂ijv+v=fv(0,x)forfort>0,x∈Rn.x∈Rn,The coefficients a(t)=(aij(t))are just bounded,meas.rable,symmetric and uniformly ***,we show strong,weak type and BMO-sobolev estimates with parabolic Muckenhoupt *** is quite remarkable that most of our results are new even for the classical heat equation∂tu−Δu+u=f.

关键词： Calderón-Zygmund parabolic singular integrals weak type and BMO estimates representation formulas parabolic equations mixed-norm sobolev and schauder estimates

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