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Integral Cayley Graphs over Finite Groups

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Algebra Colloquium 2020年第1期27卷 131-136页

作者： Elena VKonstantinova daria Lytkinat Sobolev Institute of Mathematics Ak.Koptyug av.4Novosibirsk 630090Russia Novosibirsk State University Pirogovastr.2Novosibirsk 630090Russia Siberian State University of Telecommunications and Information Sciences Kirova str.86 Novosibirsk 630108Russia Novosibirsk State University Pirogova str.2Novosibirsk 630090Russia

We prove that the spectrum of a Cayley graph over a finite group with a normal generating set S containing with every its element s all generators of the cyclic group(s)is *** particular,a Cayley graph of a 2-group generated by a normal set of involutions is *** prove that a Cayley graph over the symmetric group of degree n no less than 2 generated by all transpositions is *** find the spectrum of a Cayley graph over the alternating group of degree n no less than 4 with a generating set of 3-cycles of the form(k i j)with fixed k,a s{-n+1,1-n+1,2^2-n+1,...,(n-1)2-n+1}.

关键词： Cayley graph symmetric group alternating group group algebra Star graph

Multifunctional 2D materials for antiviral protection and detection

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National Science Review 2022年第5期9卷 8-9页

作者： daria V.Andreeva Kostya S.Novoselov Department of Materials Science and Engineering National University of Singapore Chongqing 2D Materials Institute National Graphene Institute University of Manchester

Two-dimensional (2D) materials [1]with their high surface to volume ratio,flexibility,tunable electronic properties,and most importantly—the large variety of the properties covered by the members of the 2D family—have already found their way to many applications in very different areas of technology[2].One of the most promising areas of applications for 2D crystals remains healthcare [3],where such materials have been considered for drug delivery,

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Citation and bibliographic coupling between authors in the field of social network analysis

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Journal of Data and Information Science 2024年第4期9卷 110-154页

作者： daria Maltseva Vladimir Batagelj National Research University Higher School of Economics 101000 MoscowRussia Institute of Mathematics Physics and Mechanics1000 LjubljanaSlovenia University of Primorska Andrej MarušičInstitute6000 KoperSlovenia

Purpose:We analyzed the structure of a community of authors working in the field of social network analysis(SNA)based on citation indicators:direct citation and bibliographic coupling *** observed patterns at the micro,meso,and macro levels of ***/methodology/approach:We used bibliometric network analysis,including the“temporal quantities”approach proposed to study temporal *** a two-mode network linking publications with authors and a one-mode network of citations between the works,we constructed and analyzed the networks of citation and bibliographic coupling among *** used an iterated saturation data collection ***:At the macro-level,we observed the global structural features of citations between authors,showing that 80%of authors have not more than 15 citations from other *** the meso-level,we extracted the groups of authors citing each other and similar to each other according to their citation *** have seen a division of authors in SNA into groups of social scientists and physicists,as well as into other groups of authors from different *** found some examples of brokerage between different groups that maintained the common identity of the *** the micro-level,we extracted authors with extremely high values of received citations,who can be considered as the most prominent authors in the *** examined the temporal properties of the most popular *** limitations:The main challenge in this approach is the resolution of the author’s name(synonyms and homonyms).We faced the author disambiguation,or“multiple personalities”(Harzing,2015)*** remain consistent and comparable with our previously published articles,we used the same SNA data collected up to *** analysis and conclusions on the activity,productivity,and visibility of the authors are relative only to the field of *** implications:The proposed approach can be utilized for similar objectives and

关键词： Development of scientific fields Social network analysis Bibliographic network Temporal network Citation Bibliographic coupling

Gd^(3+) content optimization for mastering high light yield and fast GdxAl_(2)Ga_(3)O_(12):Ce^(3+) scintillation ceramics

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Journal of Rare Earths 2023年第12期41卷 1911-1918,I0004页

作者： Vasili Retivov Valery Dubov daria Kuznetsova Artem Ismagulov Mikhail Korzhik NRC"Kurchatov Institute" 1Kurchatov Sq123098MoscowRussia NRC"Kurchatov Institute" IREA3 Bogorodsiy val107076MoscowRussia Institute for Nuclear Problems of Belarus State University 11 Bobruiskaya220030MinskBelarus

Tailoring of the composition of the scintillation ceramics Gd_(x)Ce_(0.03)Al_(2)Ga_(3)O_(12)(x=2.89-3.07) heavily doped with Ce was *** co-precipitation is found to be quite a useful method to provide a purpo seful deviation of Gd content from the stoichio metric ratio in powders for their further compacting and sintering in the *** effect of the composition variations on microstructure,phase composition,luminescent and scintillation characteristics is *** is shown that Gd content below the stoichiometric composition leads to increasing the grain size but,quenching of the photoluminescence and the scintillation,whereas excess Gd leads to higher luminosity;the maximum value is obtained for the composition with an excess of Gd ~2%.Ceramics possess a light yield of -50000 ph/MeV,effective scintillation kinetics of 50 ns,and is a good candidate for application in a new generation of scanners utilizing pulsed X-ray sources.

关键词： Scintillation ceramics Complexgarnet Composition Stoichiometry Light yield Scintillation kinetics

Transcriptional regulation analysis reveals the complexity of metamorphosis in the Pacific oyster(Crassostrea gigas)

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Marine Life Science & Technology 2023年第4期5卷 467-477页

作者： Fei Xu Shaoxi Deng daria Gavriouchkina Guofan Zhang CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laoshan Laboratory Qingdao 266237China Shandong Technology Innovation Center of Oyster Seed Industry Qingdao 266105China School of Energy and Environment and State Key Laboratory of Marine Pollution City University of Hong KongHong Kong 999077China Molecular Genetics Unit Okinawa Institute of Science and Technology Graduate UniversityOkinawa 904-0495Japan UK Dementia Research Institute University College LondonLondon WC1E 6BTUK

Many marine invertebrate phyla are characterized by indirect *** animals transit from planktonic larvae to benthic spats via settlement and metamorphosis,which contributes to their adaption to the marine *** the biological process of metamorphosis is,thus,key to understanding the origin and evolution of indirect *** numerous studies have been conducted on the relationship between metamorphosis and the marine environment,microorganisms,and neurohormones,little is known about gene regulation network(GRN)dynamics during ***-competent pediveligers of the Pacific oyster Crassostrea gigas were assayed in this *** assaying gene expression patterns and open chromatin region changes of different samples of larvae and spats,the dynamics of molecular regulation during metamorphosis were *** results indicated significantly different gene regulation networks before,during and *** encoding membrane-integrated receptors and those related to the remodeling of the nervous system were upregulated before the initiation of *** biogenesis,e.g.,of various enzymes and structural proteins,occurred during metamorphosis as inferred from the comprehensive upregulation of the protein synthesis system post epinephrine *** downstream gene networks were then *** transcription factors,including homeobox,basic helix–loop–helix and nuclear receptors,showed different temporal response patterns,suggesting a complex GRN during the transition *** receptors,as well as their retinoid X receptor partner,may participate in the GRN controlling oyster metamorphosis,indicating an ancient role of the nuclear receptor regulation system in animal metamorphosis.

关键词： Gene regulation network Indirect development Lophotrochozoa Nuclear receptors Neurohormones Protein synthesis Transcription factors

Mixed phase sodium manganese oxide as cathode for enhanced aqueous zinc-ion storage

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Chinese Journal of Chemical Engineering 2020年第8期28卷 2214-2220页

作者： Xinyu Wang Xinghua Qin Qiongqiong Lu Mingming Han Ahmad Omar daria Mikhailova Institute of Materials and Technology Dalian Maritime UniversityDalian 116026China Leibniz Institute for Solid State and Materials Research(IFW)Dresden e.V. Helmholtzstraße 2001069 DresdenGermany School of Materials Science and Engineering Central South UniversityChangsha 410083China

Aqueous zinc-ion batteries have been regarded as a promising alternative to large-scale energy storage, due to associated low-cost, improved safety and environmental friendliness. However, a high-performance cathode material for both rate capability and specific capacity is still a challenge. One kind of the more promising candidates are sodium manganese oxide(NMO) materials, although they suffer from individual issues and need to be further improved. Herein, we present a novel mixed phase NMO material composed of nearly equal amounts of Na(0.55)Mn2O4 and Na(0.7)MnO(2.05). The structured configuration with particle size of 200–500 nm is found to be beneficial towards improving the ion diffusion rate during the charge/discharge process. Compared with Na(0.7)MnO(2.05) and Na(0.55)Mn2O4, the mixed phase NMO demonstrates an enhanced rate capability and excellent long-term cycling stability with a capacity retention of 83% after 800 cycles. More importantly, the system also delivers an impressive energy density and power density, as 378 W·h·kg^-1 at 68.7 W·kg^-1, or 172 W·h·kg^-1 at 1705 W·kg^-1. The superior electrochemical performance is ascribed to the fast Zn^2+ diffusion rate because of a large ratio of capacitive contribution(63.9% at 0.9 m V·s^-1). Thus, the mixed phase route provides a novel strategy to enhance electrochemical performance, enabling mixed phase NMO as very promising material towards large-scale energy-storage applications.

关键词： Aqueous zinc-ion battery Sodium manganese oxide Mixed phase High energy density

The Application of Web-based Content Analysis in Rganizational Culture Research:An External Analysis of Enterprises in Video Gaming Industry

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The Application of Web-based Content Analysis in Rganization...

作者： Chevanina daria 华中师范大学

学位级别：硕士

Scholars in the organizational culture domain were striving for several decades to create the most reliable tool for quantitative assessment of organizational *** the "paradigm wars" in the 80s',researchers proposed multiple tools and scales for assessing organizational *** several frameworks were accepted by the majority of scholars as adequate methods,they still possess certain *** content analytic exploratory study aims to propose a new approach to organizational culture research by combining a very classical method--Organizational Culture Profile instrument-and web-based content *** transforming OCP values set to a coding scheme and implementing it for analysis of video game industry online job advertisements was discovered that,this approach will allow to explore organizational culture values using external *** study introduces new approach of using classical culture assessment instrument which creating opportunities for further research.

关键词： Organizational culture OCP web-based content analysis

Internalization Startegy,Conduct and Perfomance: The Case of Prada Group in China and Russia

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Internalization Startegy,Conduct and Perfomance: The Case of...

作者： Zonova daria 浙江工商大学

学位级别：硕士

At present,internationalization is becoming an increasingly important and significant *** before have had the economies of different countries affected each other in this way: most of the companies are trying to expand their field of activity and go beyond the domestic market,mastering more extensive areas and following the trends of the constantly changing global *** paper will explore the process of expanding an international company,especially all the main steps and challenges associated with completing the internationalization process that any company entering the international market may face with the focus on the luxury segment of the fashion *** research aim of the thesis is defined as follows: to analyze the efficiency of traditional internationalization strategies and their applicability for high-fashion retailers with the help of empirical research and the case study of PRADA group international expansion into Chinese and Russian *** the help of theoretical material,the concept of internationalization,its main models,the tactics of their application and the motives of the company's entry into the international market were *** key elements of the internationalization strategy process were identified and in detail *** the review of the main internalization patterns specific for retailers in fashion industry,it became obvious that some traditional theoretical approaches are not quite suitable for this *** the end of the research useful considerations and suggestions about the theoretical framework of internalization process within the fashion context were introduced.

关键词： internalization strategy Uppsala model Born-Globals fashion retailers luxury fashion market e-coomerce

Three-dimensional crystal plasticity and HR-EBSD analysis of the local stress-strain fields induced during twin propagation and thickening in magnesium alloys

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Journal of Magnesium and Alloys 2023年第2期11卷 657-670页

作者： Filip Siska daria Drozdenko Kristian Mathis Jan Cizek Tingting Guo Matthew Barnett Institute of Physics of Materials The Czech Academy of SciencesZizkova 513/22Brno 61662Czech Republic Department of Physics of Materials Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 5Prague 12116Czech Republic Institute of Plasma Physics The Czech Academy of SciencesZa Slovankou 1782/3Prague 18200Czech Republic Institute for Frontier Materials Deakin UniversityGeelongVictoria 3216Australia

Present work focuses on analysis of the stress and strain fields inside and around the individual {10–12} twin in magnesium alloy. The 3D crystal plasticity model represents twin as an ellipsoidal inclusion surrounded by the matrix. Five different twin thicknesses and three different lateral twin lengths are used for stress/strain analysis. The simulations are complemented with experimental observations using high-resolution electron backscattered diffraction. The simulations and experiments show a similar distribution of the shear stress and the spatial activity of individual slip systems(basal, prismatic, pyramidal). Plasticity induced inside the twin is dominantly caused by the prismatic dislocations slip and does not influence twin back stress which is identical to pure elastic twin. The twin with larger lateral dimension requires lower equilibrium stress which suggests anisotropic twin propagation and increased thickness of such twins. The lateral twin propagation is mostly influenced by prismatic and pyramidal slip in the twin vicinity. The twin thickness can reach a maximal level that is driven by the critical resolved shear stress values for dislocation slip with the significant influence of basal slip.

关键词： Magnesium alloy Twinning FEM Crystal plasticity HR-EBSD