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Implicit Continuous User Authentication for mobile Devices based on Deep Reinforcement Learning

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Computer Systems Science & Engineering 2023年第2期44卷 1357-1372页

作者： Christy James jose m.S.Rajasree Government Engineering College Idukki685603India APJ Abdul Kalam Technological University Thiruvananthapuram695016India

The predominant method for smart phone accessing is conﬁned to methods directing the authentication by means of Point-of-Entry that heavily depend on physiological biometrics like,ﬁngerprint or *** continuous authentication initiating to be loftier to conventional authentication mechanisms by continuously conﬁrming users’identities on continuing basis and mark the instant at which an illegitimate hacker grasps dominance of the ***,divergent issues remain *** research aims to investigate the power of Deep Reinforcement Learning technique to implicit continuous authentication for mobile devices using a method called,Gaussian Weighted Cauchy Kriging-based Continuous Czekanowski’s(GWCK-CC).First,a Gaussian Weighted Non-local mean Filter Preprocessing model is applied for reducing the noise pre-sent in the raw input face *** Kriging Regression function is employed to reduce the ***,Continuous Czekanowski’s Clas-siﬁcation is utilized for proﬁcient classiﬁcation between the genuine user and *** this way,the proposed GWCK-CC method achieves accurate authen-tication with minimum error rate and *** assessment of the pro-posed GWCK-CC method and existing methods are carried out with different factors by using UmDAA-02 Face *** results conﬁrm that the proposed GWCK-CC method enhances authentication accuracy,by 9%,reduces the authen-tication time,and error rate by 44%,and 43%as compared to the existing methods.

关键词： Deep reinforcement learning gaussian weighted non-local meanﬁlter cauchy kriging regression continuous czekanowski’s implicit continuous authentication mobile devices

IKKβ overexpression together with a lack of tumour suppressor genes causes ameloblastic odontomas in mice

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International Journal of Oral Science 2020年第1期12卷 31-39页

作者： Angustias Page Ana Bravo Cristian Suarez-Cabrera Raquel sanchez-Baltasar marta Oteo miguel Angel morcillo mLlanos Casanova jose CSegovia manuel Navarro Angel Ramirez molecular Oncology Unit.Centro de Investigaciones Energéticas Medioambientales y Tecnológicas(CIEMAT)MadridSpain Instituto de Investigación 12 de Octubre i+12 MadridSpain Centro de Investigación Biomédica en Red de Cáncer(CIBERONC) MadridSpain Department of Anatomy Animal Production and Veterinary Clinical SciencesLaboratory of Pathology Phenotyping of Genetically Engineered MiceFaculty of Veterinary MedicineUniversity of Santiago de CompostelaLugoSpain Biomedical Applications and Pharmacokinetics Unit Centro de Investigaciones EnergéticasMedioambientales y Tecnológicas(CIEMAT)MadridSpain Hematopoietic Innovative Therapies Division.Centro de Investigaciones Energéticas Medioambientales y Tecnológicas(CIEMAT).Centro de Investigación Biomédica en Red de Enfermedades Raras(CIBERER)MadridSpain Unidad mixta de Terapias Avanzadas Fundación Instituto de Investigaciones Sanitarias Fundación Jiménez DíazMadridSpain

Odontogenic tumours are a heterogeneous group of lesions that develop in the oral cavity region and are characterized by the formation of tumoural structures that differentiate as teeth. Due to the diversity of their histopathological characteristics and clinical behaviour, the classification of these tumours is still under debate. Alterations in morphogenesis pathways such as the Hedgehog,mAPK and WNT/β-catenin pathways are implicated in the formation of odontogenic lesions, but the molecular bases of many of these lesions are still unknown. In this study, we used genetically modified mice to study the role of IKKβ(a fundamental regulator of NF-κB activity and many other proteins) in oral epithelial cells and odontogenic tissues. Transgenic mice overexpressing IKKβ in oral epithelial cells show a significant increase in immune cells in both the oral epithelia and oral submucosa. They also show changes in the expression of several proteins and mi RNAs that are important for cancer development. Interestingly, we found that overactivity of IKKβ in oral epithelia and odontogenic tissues, in conjunction with the loss of tumour suppressor proteins(p53, or p16 and p19), leads to the appearance of odontogenic tumours that can be classified as ameloblastic odontomas, sometimes accompanied by foci of secondary ameloblastic carcinomas. These tumours show NF-κB activation and increased β-catenin *** findings may help to elucidate the molecular determinants of odontogenic tumourigenesis and the role of IKKβ in the homoeostasis and tumoural transformation of oral and odontogenic epithelia.

关键词： IKKβ tumour suppressor

morphodynamics of sandy beaches under the influence of storm sequences:Current research status and future needs

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Water Science and Engineering 2019年第3期12卷 221-234页

作者： Sonja Eichentopf Harshinie Karunarathna jose m.Alsina Department of Civil and Environmental Engineering Imperial College London South Kensington Campus London SW7 2AZ UK College of Engineering Swansea University Bay Campus Swansea SA1 8EN UK Laboratori d'Enginyeria marítima Universitat Politecnica de Catalunya Barcelona 08034 Spain

This paper reviews and discusses the current research status, trends, and future needs in the field of beach morphodynamics under the influence of storm *** paper reviews how the three main research methods, field investigations, numerical modelling, and physical modelling, have been used to study beach morphodynamics during storm *** quantitative definitions of storm sequences at different sites are presented and *** is shown that the definition of storm sequences is site-specific and requires knowledge of the storm climate, beach characteristics, and the temporal scale of beach ***, the paper brings together currently available approaches aimed at describing the effect of storm sequences on beach erosion in a general *** importance of storm chronology and the effects of an extreme storm within a sequence of storms are *** that, the more poorly studied aspect of beach recovery in between storms within a sequence is *** indicators for defining beach recovery, namely the shoreline location, sediment volumes, and the beach state, are identified and ***, important research needs, including the need for detailed physical modelling, are identified.

关键词： Storm sequences Beach morphodynamics Beach erosion Extreme storms Return period Beach recovery

On a Classical Theorem on the Diameter and minimum Degree of a Graph

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Acta mathematica Sinica,English Series 2017年第11期33卷 1477-1503页

作者： Veronica HERNANDEZ Domingo PESTANA jose m. RODRIGUEZ Universidad CarlosⅢde madrid Avenida de la Universidad3028911 LeganesSpain

In this work, we obtain good upper bounds for the diameter of any graph in terms of its minimum degree and its order, improving a classical theorem due to Erdos, Pach, Pollack and Tuza. We use these bounds in order to study hyperbolic graphs （in the Gromov sense）. To compute the hyperbolicity constant is an almost intractable problem, thus it is natural to try to bound it in terms of some parameters of the graph. Let H（n, δ0） be the set of graphs G with n vertices and minimum degree 50, and J（n, Δ） be the set of graphs G with n vertices and maximum degree A. We study the four following extremal problems on graphs： a（n,δ0） = min{δ（G）｜ G ∈H（n, δ0）}, b（n, δ0） =- max{δ（G）｜ e ∈H（n, δ0）}, α（n, Δ） = min{δ（G） [ G ∈ J（n, Δ）} and β（n,Δ） = max{δ（G） ] G∈Π（n,Δ）}. In particular, we obtain bounds for b（n, δ0） and we compute the precise value of a（n, δ0）, α（n, Δ） and w（n, Δ） for all values of n, r0 and A, respectively.

关键词： Extremal problems on graphs diameter minimum degree maximum degree Gromov hyperbolicity hyperbolicity constant finite graphs

Influence of metal support in-plane symmetry on the corrugation of hexagonal boron nitride and graphene monolayers

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Nano Research 2018年第9期11卷 4643-4653页

作者： Antonio d. martinez-Galera jose m. Gomez-Rodriguez Departamento de Fisica de la matefia Condensada Universidad Autonoma de Madrid Madrid E-28049 Spain Condensed matter Physics Center (IFImAC) UniversidadAutdnoma de Madrid Madrid E-28049 Spain Instituto Nicolds Cabrera Universidad Autonoma de Madrid Madrid E-28049 Spain

Predicting the properties of two-dimensional （2D） materials as graphene and hexagonal boron nitride （h-BN） monolayers after their growth on any given substrate is a major challenge. While the influence of the electron configuration of the atoms of the underlying surface is well-understood, the effect of substrate geometry still remains unclear. The structural properties of h-BN monolayers grown on a rectangularly packed Rh（110） surface were characterized in situ by ultrahigh vacuum scanning tunneling microscopy and were compared to those that this material exhibits when grown on substrates showing different crystallographic orientations. Although the h-BN monolayer grown on Rh（110） was dominated by a unique quasiunidimensional moir6 pattern, suggesting considerable interface interaction, the moir6 corrugation was unexpectedly smaller than those reported for strongly interacting interfaces with hexagonal-terminated substrates, owing to differences in the possible binding landscapes at interfaces with differently oriented substrates. moreover, a rule was derived for predicting how interface corrugation and the existence and extent of subregions within moir6 supercells containing favorable sites for orbital mixing between h-BN monolayers and their supports depend on substrate symmetry. These general symmetry considerations can be applied to numerous 2D materials, including graphene, thereby enabling the prediction of how substrate choice determines the properties of these materials. Furthermore, they could also provide new routes for tuning 2D material properties and for developing nanotemplates showing different geometries for Krowing adsorbate superlattices.

关键词： hexagonal boron nitride graphene two-dimensional materials scanning tunneling microscopy moire superstructures nanotemplates

Generalization of the linguistic aggregation operator and its application in decision making

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Journal of Systems Engineering and Electronics 2011年第4期22卷 593-603页

作者： jose m. merigo Anna m. Gil-Lafuente Ligang Zhou Huayou Chen Department of Business Administration University of Barcelona Av. Diagonal 690 08034 Barcelona Spain School of mathematical Science Anhui University Hefei 230601 P. R. China

A generalization of the linguistic aggregation functions （or operators） is presented by using generalized and quasiarithmetic means. Firstly, the linguistic weighted generalized mean （LWGm） and the linguistic generalized ordered weighted averaging （LGOWA） operator are introduced. These aggregation functions use linguistic information and generalized means in the weighted average （WA） and in the ordered weighted averaging （OWA） function. They are very useful for uncertain situations where the available information cannot be assessed with numerical values but it is possible to use linguistic assessments. These aggregation operators generalize a wide range of aggregation operators that use linguistic information such as the linguistic generalized mean （LGm）, the linguistic OWA （LOWA） operator and the linguistic or- dered weighted quadratic averaging （LOWQA） operator. We also introduce a further generalization by using quasi-arithmetic means instead of generalized means obtaining the quasi-LWA and the quasi-LOWA operator. Finally, we develop an application of the new approach where we analyze a decision making problem regarding the selection of strategies.

关键词： linguistic aggregation function linguistic orderedweighted averaging (OWA) operator generalized mean linguis-tic decision making strategic decision making uncertainty.

Lympho-SPECT/CT as a tool to evaluate postoperative outcomes after LVA for lymphedema repair

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Plastic and Aesthetic Research 2020年第6期7卷 12-23页

作者： jose m.Lasso Plastic and Reconstructive Surgery Hospital General Universitario Gregorio MarañónMadrid 28007Spain

Aim:To describe findings when comparing lympho-SPECT-CT images before and after lymphovenous anastomosis(LVA)surgeries and to correlate these results with pre-and post-operative volume changes in the limbs of ***:An observational,prospective,longitudinal study was designed.20 consecutive patients were treated for lymphedema by means of LVA between 2015 and *** were affected by secondary lymphedema(ISGⅡ-Ⅲ)following lymphadenectomy,radiation or *** patients received preoperative rehabilitation as well as radiotherapy after oncological *** volume was measured before surgery and at one year *** was performed under general anesthesia with ICG *** was also used to evaluate postoperative ***-SPECT-CT was performed in all subjects at their first consultation and at one year after every surgical *** of findings included an absence of lymph nodes,new lymph node activity in anatomical areas and new lymphatic activity in extra-anatomical ***:Limb volume decreased in 19 patients after *** patients showed preoperative linear ICG patterns,combined with areas presenting with another type of *** LVA,the linear pattern was observed in 11 ***-CT/lymphoscintigraphy before surgery showed a total absence of lymph nodes,except in two cases,in whom small nodes in anatomical locations were *** LVA,we observed new landmarks in 16 patients corresponding to lymphatic circulation that was not present in preoperative *** six cases,newlymphatic activity compatible with lymph nodes was detectable after *** Spearman correlation coefficient was negative when circumferences and lympho-SPECT-CT were tested(P=0.02).Conclusion:Results showed a postoperative decrease in volume that correlated inversely with lympho-SPECT/CT ***-SPECT/CT provided additional information related to accurate identification and the anatomical location of lymphatic structures that

关键词： Lymphedema supermicrosurgery lymphovenous anastomosis LVA lympho-SPECT/CT ICG

Decoupled Photovoltaic Power Ramp-rate Calculation method for Perturb and Observe Algorithms

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Journal of modern Power Systems and Clean Energy 2022年第4期10卷 932-940页

作者： jose miguel Riquelme-Dominguez Francisco m.Gonzalez-Longatt Sergio martinez Electrical Engineering Department Escuela Tecnica Superior de Ingenieros IndustrialesUniversidad Politecnica de Madrid28006 MadridSpain Department of Electrical Engineering Information Technology and CyberneticsUniversity of South-Eastern Norway3918 PorsgrunnNorway

As photovoltaic energy increasingly penetrates in power systems,transmission system operators have started to request its participation in providing ancillary *** of the demanded services is the power ramp-rate control(PRRC),which attempts to limit the power ramps produced by intermittent irradiance *** order to achieve the desired objective,solutions based on storage systems or modifying the maximum power point tracking(mPPT)in perturb and observe(P&O)algorithms are commonly *** starting point in PRRC is the determination of the instantaneous power ramprate,and different methods have been proposed in the literature for its ***,the accuracy and computational speed of existing procedures can be improved,which may be critical in situations with rapid irradiance *** this paper,a decoupled photovoltaic power ramp-rate calculation method is presented,in which the effect of variable irradiance and the P&O algorithm are computed *** proposed method has been theoretically demonstrated and tested through simulation and experimental *** results show that it can improve the previous methods in terms of accuracy and computation *** validation with hardware-inthe-loop demonstrates the suitability of the proposed method for real-time applications,even in presence of noisy measurements.

关键词： Hardware-in-the-loop maximum power point tracking perturb and observe photovoltaic power ramp-rate control ramp-rate calculation method

Effects of antibiotics on hydrogen production and gut symbionts in the Formosan subterranean termite Coptotermes formosanus （Isoptera： Rhinotermitidae）

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Insect Science 2012年第3期19卷 346-354页

作者： Yueqing Cao Jian-Zhong Sun jose m.Rodriguez College of Bioengineering Chongqing UniversityChongqingChina Coastal Research&Extension Center Mississippi State UniversityPoplarvilleMSUSA School of the Environment Jiangsu UniversityZhenjiangJiangsu ProvinceChina mississippi State Chemical Laboratory Petroleum Production DivisionMississippi State UniversityStarkvilleMSUSA

Symbiotic microorganisms that inhabit the gut of Coptotermes formosanus enable this termite to degrade lignocelluloses and further produce hydrogen as an important intermediate to be recycled in its hindgut or as a byproduct to be emitted to the atmosphere. Both symbiotic protists and prokaryotes in the guts of termites demonstrated some different roles with respect to hydrogen production. In this study, the effects of two antibiotics, ampicillin and tetracycline, on hydrogen emission and the gut symbionts of C. formosanus were investigated. Hydrogen emission from termite guts was significantly enhanced when termites fed on wood diets treated with either ampicillin or tetracycline. The greatest H2 emission rates, 2 519 4- 74 and 2 080 ＋ 377 nmol/h/g body weight, were recorded with the treatments of ampicillin and tetracycline, respectively, which showed 6-7 times more H2 production than that of controls. Antibiotic-treated diets negatively affected the prokaryotic communities and reduced their abundances, particularly on those ectosymbionts inhabiting the gut walls or in the gut fluid of C. formosanus, such as spirochetes. However, no signif- icant reductions in the cotmts of gut cellulolytic protists, Pseudotrichonympha grassii and Holomastigotoids hartmanni, were recorded; and with a further observation by confocal laser scanning microscopy, the endosymbionts inhabiting P. grassii generally survived the antibiotic treatments. These results suggest that some prokaryotes may serve as the main hydrogen consumers, while P. grassii, together with its endosymbionts, may function as the main contributors for hydrogen production in the hindgut of C. formosanus.

关键词： antibiotics hydrogen symbiotic microorganisms wood-feeding termites