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Weil Modules and Gauge Bundles

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Acta Mathematica Sinica,English Series 2006年第1期22卷 271-278页

作者： miroslav KURES Institute of Mathematics Brno University of Technology Technicka 2 61669 Brno Czech Republic

Finite dimensional modules over Weft algebras are investigated and corresponding gauge bundle functors, from the category of vector bundles into the category of fibered manifolds, are determined. The equivalence of the two definitions of gauge Well functors is proved and a number of geometric examples is presented, including a new description of vertical Well bundles.

关键词： Weil algebra product preserving bundle gauge bundle functor jet

Hybrid Power Supply System with Fuzzy Logic Controller: Power Control Algorithm, Main Properties, and Applications

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Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 923-931页

作者： dragana J.Petrović miroslav M.Lazić Bojana V.JovanovićLazić Branko d.Blanuša Stanko O.Aleksić department of Power Electronics Iritel a.d.BelgradeBelgradeSerbia department of Power Electronics Faculty of Electrical Engineering University of Banja LukaBanja LukaSerbian

This paper presents a novel power supply system based on the use of fuzzy inference logic to improve the power control of renewable energy *** system comprises renewable solar and wind sources,and an accumulator battery is used as an additional power *** procedure for the parallel connection of multiple energy sources provides a stable power supply and optimal charging of the accumulative *** energy sources are connected in parallel using two serial converters and controlled by the controller based on the fuzzy *** reference voltage control of the serial converter enables an optimal use of available energy *** accumulative element is connected in parallel to compensate for the shortage of solar and wind energies,whereas if the available renewable energy exceeds the needs of the consumers,the surplus energy is accumulated in the *** measurements are conducted on the prototype of the hybrid power system under real conditions and compared with the applied systems of this *** novel system is mainly used in remote telecom locations where there is no power distribution network.

关键词： Fuzzy logic hybrid power source power supply parallel operation serial converter

SATI algorithm - the calculation of stress aligned HTI stiffness tensor for sandstone reservoir from wireline data

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Science China(Physics,Mechanics & Astronomy) 2011年第11期54卷 1937-1942页

作者： BRAJANOVSKI miroslav State Key Laboratory of Acoustics Institute of AcousticsChinese Academy of Science

I present an algorithm that uses cross-dipole wireline data only in order to estimate the HTI stiffness tensor for sandstone formations under in-situ asymmetric lateral (azimuthal) stress *** algorithm is based on the generalization of terms "excess compliance" and "fracture weakness" developed within the linear slip interface theory for fractured rocks and is applied here to describe the effect of grain contacts in loose sandstones.I introduce the term "plane of weakness" being oriented (aligned) orthogonal to theminimal horizontal principal stress direction in order to describe the overall effective weakness of sandstone caused by the different principal *** the quantification of this phenomenon I use the anisotropic Gassmann *** a result I am able to calculate a HTI stiffness tensor for the interval length of a saturated sandstone formation and the respective Thomsen's *** input data required for these calculations have to be provided by wireline logging and will consist of porosity,density,P-wave velocity,fast and slow shear wave velocities and oil-water saturation *** algorithm in its current form is applicable to sandstone reservoirs *** limitation is based on two assumptions,which state that all the measured anisotropy is induced by the present stress in sandstone and that the unstressed sandstone would be nearly *** a technical viewpoint this algorithm can be implemented fairly easily in data acquisition and interpretation software relying on correct estimation of anisotropy *** is also cheap because it does not require any additional measurements apart from the cross-dipole logging.

关键词： rock physics poroelasticity fractures stress anisotropy S-waves

Prescribed-Time Control of Stochastic Nonlinear Systems with Reduced Control Effort

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Journal of Systems Science & Complexity 2021年第5期34卷 1782-1800页

作者： LI Wuquan KRSTIC miroslav School of Mathematics and Statistics Science Ludong UniversityYantai 264025China department of Mechanical and Aerospace Engineering University of CaliforniaSan DiegoLa JollaCA 92093USA

A new prescribed-time state-feedback design is presented for stochastic nonlinear strictfeedback *** from the existing stochastic prescribed-time design where scaling-free quartic Lyapunov functions or scaled quadratic Lyapunov functions are used,the design is based on new scaled quartic Lyapunov *** designed controller can ensure that the plant has an almost surely unique strong solution and the equilibrium at the origin of the plant is prescribed-time mean-square *** that,the authors redesign the controller to solve the prescribed-time inverse optimal mean-square stabilization *** merit of the design is that the order of the scaling function in the controller is reduced dramatically,which effectively reduces the control *** simulation examples are given to illustrate the designs.

关键词： Control effort prescribed-time design stochastic nonlinear strict-feedback systems

Case of rectal angioleiomyoma in a female patient

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World Journal of Gastroenterology 2013年第13期19卷 2114-2117页

作者： Goran Z Stanojevi dragan S Mihailovi Milica d Nestorovi Milan d Radojkovi Milan M Jovanovi miroslav P Stojanovi Branko B Brankovi General Surgery Clinic Ni Clinical CentreFaculty of MedicineUniversity of Ni18000 NiSerbia Institute of Pathology NiClinical CentreFaculty of MedicineUniversity of Ni18000 NiSerbia

Angioleiomyoma represents a benign stromal tumor, which usually occurs in the subcutaneous tissue of the extremities, although its occurrence in the gastrointestinal tract is very rare. A case of rectal angioleiomyoma in a 40 year-old female patient is described here. Six months earlier, the patient suffered from periodical prolapse of an oval tumor from the anus, along with difficulties in bowel movement. A transanal extirpation of the tumor was performed. This is the first reported case in the English literature of a patient presenting with prolapsed angioleiomyoma of the rectum. during the immediate postoperative period, as well as 6 mo later, the patient had an unremarkable postoperative recovery.

关键词： Prolapsed tumor Angioleiomyoma Rectum Leiomyoma

Primary colorectal lymphoma:An overview

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World Journal of Gastrointestinal Oncology 2011年第1期3卷 14-18页

作者： Goran Z Stanojevic Milica d Nestorovic Branko R Brankovic miroslav P Stojanovic Milan M Jovanovic Milan d Radojkovic Clinic for General Surgery Clinical Center NisBul Zorana Djindjica 4818000 NisSerbia

Lymphomas represent common hematological malignancies with increasing incidence in recent *** major site of extranodal non-Hodgkin lymphoma is the gastrointestinal *** of the large intestine is rare in comparison to the stomach or small *** disease appears later in life,predominantly in the male *** are nonspecific,requiring a high index of suspicion in order to establish the *** treatment varies from chemotherapy alone to multimodal therapies combining surgery,chemotherapy and *** small number of patients with various histological subtypes and different stage at presentation results in unclear protocol for the treatment of primary colorectal *** purpose of this paper is to review current data on primary lymphoma of the colon and rectum while analyzing reported case series and published material on the subject.

关键词： Lymphoma non-Hodgkin Extranodal lympho-ma Large intestine Colorectal surgery Chemotherapy

Effects of sampling frequency on node mobility prediction in dynamic networks: A spectral view

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digital Communications and Networks 2023年第4期9卷 1009-1022页

作者： Peppino Fazio Miralem Mehic miroslav Voznak dSMN Ca’Foscari University of VeniceVia Torino 15530172MestreVEItaly department of Telecommunications Faculty of Electrical EngineeringUniversity of Sarajevo Zmaja od Bosne bb71000SarajevoBosnia and Herzegovina VSB–Technical University of Ostrava 17.listopadu 2172/1570800OstravaCzech Republic

The field of mobility prediction has been widely investigated in the recent past,especially the reduction of the coverage radius of cellular networks,which led to an increase in hand-over *** the cell coverage very frequently,for example,may lead to service disruptions if a predictive approach is not deployed in the *** several works examined mobility prediction in the new-generation mobile networks,all of these studies focused on studying the time features of mobility traces,and the spectral content of historical mobility patterns was not considered for prediction purposes as *** the present study,we propose a new approach to mobility prediction by analyzing the effects of a proper mobility sampling *** proposed approach lies in the mobility analysis in the frequency domain,to extract hidden features of the mobility ***,we proposed a new methodology to determine the spectral content of mobility traces(considered as signals)and,thus,the appropriate sampling frequency,which can provide numerous *** considered several types of mobility models(***,urban,and vehicular),containing important details in the time and frequency *** simulation campaigns were performed to observe and analyze the characteristics of mobility from real traces and to evaluate the effects of sampling frequency on the spectral content.

关键词： Mobile networking Frequency domain Mobility spectrum

Higher Laplace–Beltrami Operators on Bounded Symmetric domains

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Acta Mathematica Sinica,English Series 2018年第8期34卷 1297-1312页

作者： miroslav ENGLIS Hao XU Mathematics Institute Zitnd 25 11567 Prague 1 Czech Republic and Mathematics Institute Na Rybnicku 1 74601 Opava Czech Republic Center of Mathematical Sciences Zhejiang University Zhejiang 310027 P. R. China

It was conjectured by the first author and Peetre that the higher Laplace-Beltrami opera- tors generate the whole ring of invariant operators on bounded symmetric domains. We give a proof of the conjecture for domains of rank 〈 6 by using a graph manipulation of Kahler curvature tensor. We also compute higher order terms in the asymptotic expansions of the Bergman kernels and the Berezin transform on bounded symmetric domain.

关键词： Higher Laplace-Beltrami operators bounded symmetric domains Bergman Kernel

Photometric and Spectroscopic Study of Two Low Mass Ratio Contact Binary Systems:CRTS J225828.7-121122 and CRTSJ030053.5+230139

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Research in Astronomy and Astrophysics 2023年第11期23卷 1-6页

作者： Surjit S.Wadhwa Jelena Petrović Nick F.H.Tothill Ain Y.de Horta miroslav d.Filipović Gojko djurašević School of Science Western Sydney UniversityLocked Bag 1797PenrithNSW 2751Australia Astronomical Observatory Volgina 711060 BelgradeSerbia

The study reports photometric and spectroscopic observations of two recently recognized contact binary *** systems show total eclipses and analysis of the light curves indicates both have very low mass ratios of less than *** derive absolute parameters from color and distance based calibrations and show that,although both have low mass ratios,they are likely to be in a stable orbit and unlikely to *** other respects,both systems have characteristics similar to other contact binaries with the secondary larger and brighter than their main sequence counterparts and we also find that the secondary is considerably denser than the primary in both systems.

关键词： (stars:)binaries:eclipsing stars:mass-loss techniques:photometric