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Core structure and secondary breakdown of an exploding wire in the current-pause regime

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Matter and Radiation at Extremes 2019年第2期4卷 43-51页

作者： V.M.Romanova A.R.Mingaleev A.E.ter-oganesyan T.A.Shelkovenko G.V.Ivanenkov S.A.Pikuz P.N.Lebedev Physical Institute of the Russian Academy of Sciences 53Leninskiy pr.119991MoscowRussia

The results of experiments with rapidly exploding thin conductors inthe current-pause regime are *** wires 25mmin diameter and 12 mm in length serve as loads for a GVP pulsed generator based on a low-inductance *** generator produces current pulses of up to 10 kA with dI/dt up to 50 A/ns.A 100–800-ns current-pause regime is obtained for charging voltages of 10–15 *** discharge channel structure is studied by shadow photography using 0.53-mm,10-ns second-harmonic pulses from aNd31:YAG *** the experiments,three types of secondary breakdown are observed,with different symmetry types,different current-pause durations,and different dependences on the energy deposited into the wire during its resistive *** of these breakdown types develop inside a tubular core that is produced in the current-pause stage and that remains almost undamaged by the breakdown.

关键词： breakdown regime structure

A Sufficient Degree Condition for a Graph to Contain All Trees of Size k

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Acta Mathematica Sinica,English Series 2011年第1期27卷 135-140页

作者： Camino BALBUENA Alberto MARQUEZ Jose ramon PORTILLO Departament de Matemhtica Aplicada III Universitat Politecnica de Catalunya C/ Jordi Girona 1-3 (Edifici C2 Despatx 302) 08034 Barcelona Spain Departamento de Matemdtica Aplicada I Universidad de SeviUaE.T.S. de Informdtica Avda. Reina Mercedes s//n 41012 SeviUa Spain

The Erdos-Sos conjecture says that a graph G on n vertices and number of edges e（G）〉 n（k - 1）/2 contains all trees of size k. In this paper we prove a sufficient condition for a graph to contain every tree of size k formulated in terms of the minimum edge degree ξ（G） of a graph G defined as {（G） = min{d（u）＋ d（v） - 2 ： uv ∈ E（G）}. More precisely, we show that a connected graph G with maximum degree △（G） ≥ k and minimum edge degree {（G）〉 2k - 4 contains every tree of k edges if dG（x）＋ dG（y） ≥ 2k - 4 for all pairs x, y of nonadjacent neighbors of a vertex u of dG（u） ≥ k.

关键词： Erdos-Sos conjecture

Some Comments on Zonal Polynomials and Their Expected Values with respect to ***

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Acta Mathematicae Applicatae Sinica 2017年第3期33卷 567-574页

作者： Jose A.Diaz-Garcia ramon Gutierrez-Jaimez Department of Statistics and Computation Universidad Autonoma Agraria Antonio Narro25350 BuenavistaSaltilloCoahuilaMexico Department of Statistics and O.R University of GranadaGranada 18071Spain

In this paper, we give alternative proofs of some results in [15] （Li R.,1997） about the expected value of zonal polynomials.

关键词： elliptical matrix distributions random matrices zonal polynomials generalised Wishart distribution

Tumor organoids to study gastroesophageal cancer: a primer

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Journal of Molecular Cell Biology 2020年第8期12卷 593-606页

作者： ramon U.Jin Jason C.Mills Division of Oncology Department of Internal MedicineWashington University School of MedicineSt.LouisMO 63130USA Division of Gastroenterology Department of Internal MedicineWashington University School of MedicineSt.LouisMO 63130USA Department of Developmental Biology Washington University School of MedicineSt.LouisMO 63130USA Department of Pathology and Immunology Washington University School of MedicineSt.LouisMO 63130USA

Gastroesophageal cancers are leading causes of cancer *** attempts at adopting molecularly based treatment approaches have been slow and ineffective even though we begin to identify specific targetable gene mutations and *** is dear that we should no longer treat all gastroesophageal cancers as a homogeneous disease,which is what we do when we use nonspecific ***,we currently cannot monitor successful gene/pathway targeting,nor understand how/when tumors develop resistance,nor predict which patients will derive maximal *** improve outcomes,we must precisely detail the heterogeneity of these tumors to then individualize cancer therapy as well as develop novel avenues to study and predict treatment effects in individual *** this end,patient-derived organoids,in which tumor cells from individual patients are grown in a Petri dish,are a new versatile system that allows for timely expandability,detailed molecular characterization,and genetic manipulation with the promise of enabling predictive assessment of treatment *** this review,we will explore the development and basic techniques for organoid generation,and discuss the current and potential future applications of this exciting technology to study the basic science of carcinogenesis and to predict/guide cancer patient care in the clinics.

关键词： targeted therapy precision oncology cancer model tumor heterogeneity cancer evolution personalized medicine

Fast-Constructed Marine and Port Structures

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Journal of Shipping and Ocean Engineering 2019年第1期9卷 8-13页

作者： Doubrovsky Michael Poizner Mikhail oganesyan Virginia oganesyan Anett Odessa National Maritime University Odessa 65029 Ukraine State R&D Institute of Marine Transport Odessa 65058 Ukraine Ukrainian Sea Ports Authority Odessa 65026 Ukraine

In order to provide short construction period and to avoid bulky technologies in maritime conditions some rational structures and installation methods are worked out. These methods may be applied for erection of temporary (seasonable) near-shore constructions;they are comparatively cheap and do not involve heavy construction equipment and mechanisms.

关键词： Temporary berth structure shore protection maritime construction

Regular Global Attractors of Type Ⅲ Thermoelastic Extensible Beams

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Chinese Annals of Mathematics,Series B 2010年第5期31卷 619-630页

作者： Michele COTI ZELATI Vittorino PATA ramon QUINTANILLA Mathematics Department Indiana UniversityRawles Hall Dipartimento di Matematica "F. Brioschi" Politecnico di Milano Matemtica Aplicada 2 ETSEIAT-UPC terrassa

For β∈ R,the authors consider the evolution system in the unknown variables u and ααttu+αxxxxu+αxxtα-(β+αxu L22)αxxu=f,αttα-αxxα-αxxtα-αxxtu=0 describing the dynamics of type III thermoelastic extensible beams,where the dissipation is entirely contributed by the second equation ruling the evolution of the thermal displacement α.Under natural boundary conditions,the existence of the global attractor of optimal regularity for the related dynamical system acting on the phase space of weak energy solutions is established.

关键词： Type III thermoelastic extensible beam Lyapunov functional Global attractor

Machine Learning-Based Radio Access Technology Selection in the Internet of Moving Things

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China Communications 2021年第7期18卷 13-24页

作者： ramon Sanchez-Iborra Luis Bernal-Escobedo Jose Santa Dept.Engineering and Applied Techniques University Centre of Defence at the Spanish Air Force Academy30729 San JavierSpain Dept.Information and Communication Engineering University of Murcia30100 MurciaSpain Dept.of Electronics Computing Technology and ProjectsTechnical University of Cartagena30202 CartagenaSpain

The Internet of Moving Things(IoMT)takes a step further with respect to traditional static IoT *** this line,the integration of new eco-friendly mobility devices such as scooters or bicycles within the Cooperative-Intelligent Transportation Systems(C-ITS)and smart city ecosystems is crucial to provide novel *** this end,a range of communication technologies is available,such as cellular,vehicular WiFi or Low-Power Wide-Area Network(LPWAN);however,none of them can fully cover energy consumption and Quality of Service(QoS)***,we propose a Decision Support System(DSS),based on supervised Machine Learning(ML)classification,for selecting the most adequate transmission interface to send a certain message in a multi-Radio Access Technology(RAT)set *** ML algorithms have been explored taking into account computing and energy constraints of IoMT enddevices and traffic ***,a real implementation of a decision tree-based DSS for micro-controller units is presented and *** attained results demonstrate the validity of the proposal,saving energy in communication tasks as well as satisfying QoS requirements of certain urgent *** footprint of the real implementation on an Arduino Uno is 444 bytes and it can be executed in around 50µs.

关键词： internet of moving things multi-RAT CITS classification personal mobility

WEALTHY KOANS AROUND 200 BC IN THE CONTEXT OF HELLENISTIC SOCIAL HISTORY

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Journal of Ancient Civilizations 2021年第2期36卷 235-267,300,301页

作者： Péter Kató Eötvös Loránd University Budapest

This paper aims to evaluate the data relating to the Koan elite around 200 BC,in the light of general trends of the post-Classical polis’s social *** article first presents prosopographical information regarding the top contributors of the famous wartime subscription list(IG XII 4,1,75–77),their relatives,as well as other contributors with more modest amounts of money who can nevertheless be identified as rich,influential,and prominent members of the local *** paper demonstrates the existence of an influential elite which exercised its power mostly outside the framework of political offices(archai),through religious activities and priesthoods,patronage in associations,and interstate ***,the paper identifies those factors that limited the influence of the elite:the instability of these families,the sustainment of democratic political institutions,and the tendency to emphasize communal efforts over individual benefactions–what is attested primarily by the specific Koan epigraphic habit.

关键词： outside elite religious

Hardy spaces on Lie groups of polynomial growth

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Science China Mathematics 2010年第1期53卷 23-40页

作者： ter ELST A F M ROBINSON Derek W Department of Mathematics University of Auckland Center for Mathematics and its Applications Mathematical Science Institute

We give several characterizations of Hardy spaces associated with complex, second-order,subelliptic operators on Lie groups with polynomial growth.

关键词： Lie groups Hardy spaces heat kernel