bluuebunny/crossref_metadata_2025 huggingface dataset:
A novel approach for the synthesis of C60 fullerenes containing strained 2,3-dimethylenebicyclo[2,2,0]hexane fragments
Authors: Tuktarov Airat R. , Chobanov Nuri M. , Ramazanov Ilfir R. , Tulyabaev Arthur R. , Akhmetov Arslan R. , Galimov Dim I. , Dzhemilev Usein M.
Published: January 2021

A novel approach for introducing strained 2,3-dimethylenebicyclo[2,2,0]hexane structures into the C60 fullerene molecule, based on the reaction of C60 with substituted propargylamines, promoted by the Ti(Oi-Pr)4 and EtMgBr system.
Molecular design principles of ionic liquids with a sulfonyl fluoride moiety
Authors: Siegel David J. , Anderson Grace I. , Cyr Noah , Lambrecht Daniel S. , Zeller Matthias , Hillesheim Patrick C. , Mirjafari Arsalan
Published: January 2021

New family of SO2F-functionalized ionic liquids.
MOF-derived fluorine and nitrogen co-doped porous carbon for an integrated membrane in lithium–sulfur batteries
Authors: Fang Xinzuo , Jiang Yu , Zhang Kailong , Hu Guang , Hu Weiwei
Published: January 2021

The F and N co-doped porous carbon derived from ZIF-8 is used as a membrane in Li–S batteries with enhanced capacity and cycling stability.
Functionalization induced quantum spin Hall to quantum anomalous Hall phase transition in monolayer jacutingaite
Authors: Luo Fangxue , Hao Xiamin , Jia Yizhen , Yao Junjie , Meng Qingling , Zhai Shuwei , Wu Jinge , Dou Wenzhen , Zhou Miao
Published: January 2021

Quantum spin Hall to quantum anomalous Hall phase transition in monolayer jacutingaite (Pt2HgSe3) induced by chalogen (S, Se, Te) functionalization.
Facile synthesis of MXene-supported copper oxide nanocomposites for catalyzing the decomposition of ammonium perchlorate
Authors: Li Keding , Lei Yuqing , Liao Jun , Zhang Yong
Published: January 2021

MXene-supported CuO nanocomposites were synthesized by ice crystal templating and could effectively reduce the HTD temperature and increase the heat release of AP. A possible mechanism for the excellent catalytic performance was also proposed.
Synthesis and stability of single-phase chalcopyrite – a potential reference material for key investigations in chemistry and metallurgical engineering
Authors: Frenzel Ninett , Mehne Marcel , Bette Sebastian , Kureti Sven , Frisch Gero
Published: January 2021

Single-phase chalcopyrite has been synthesised and its phase behaviour has been investigated. Results help to rationalise different findings in the literature about this important material.
First-principles prediction of structural stability and thermoelectric properties of SrGaSnH
Authors: Haque Enamul , Rahaman Mizanur
Published: January 2021

Weak anharmonicity: the weak anharmonicity leads to weak phonon scattering in SrGaSnH. Thus, SrGaSnH intrinsically possesses a high lattice thermal conductivity (kl).. Such large κl dramatically reduces the thermoelectric figure of merit.
Solution structure of zinc-seamedC-alkylpyrogallol[4]arene dimeric nanocapsules
Authors: Kumari Harshita , Wycoff Wei G. , M. Mayhan Collin , Kline Steven R. , So Joshua R. , Deakyne Carol A. , Adams John E. , Atwood Jerry L.
Published: January 2021

Solid-state core geometry of zinc-seamedC-propylpyrogallol[4]arene dimers is retained in solution; however, external ligands exchange with solvent molecules.
Characterization of NucPNP and NucV involved in the early steps of nucleocidin biosynthesis in Streptomyces calvus
Authors: Ngivprom Utumporn , Kluaiphanngam Surayut , Ji Wenjuan , Siriwibool Siriwalee , Kamkaew Anyanee , Ketudat Cairns James R. , Zhang Qi , Lai Rung-Yi
Published: January 2021

NucPNP and NucV involved in the early steps of nucleocidin biosynthesis were characterized in vitro. The results provide insight to study the biosynthesis of nucleocidin in the future.
Rhodium-catalysed selective C–C bond activation and borylation of cyclopropanes
Authors: Wang Yandong , Bai Jingyi , Yang Youqing , Zhao Wenxuan , Liang Yong , Wang Di , Zhao Yue , Shi Zhuangzhi
Published: January 2021

Transition metal (TM)-catalysed directed hydroboration of cyclopropanes which facilitates the construction of complex alkylboronates is an essential synthetic methodology.
An overview on Sb-based intermetallics and alloys for sodium-ion batteries: trends, challenges and future prospects from material synthesis to battery performance
Authors: Sarkar Shreya , Peter Sebastian C.
Published: January 2021

A comprehensive review on Sb-based intermetallics and alloys probed for sodium-ion batteries, which highlights the trends, challenges and future prospects from material synthesis to battery performances.
Tumor microenvironment-responsive multifunctional nanoplatform based on MnFe2O4-PEG for enhanced magnetic resonance imaging-guided hypoxic cancer radiotherapy
Authors: He Zhenhu , Yan Haixiong , Zeng Wenbin , Yang Kai , Rong Pengfei
Published: January 2021

A promising nanoplatform for the tumor microenvironment regulation, thus achieving magnetic resonance imaging precision-guided cancer radiotherapy sensitization.
Charge transport in phthalocyanine thin-film transistors coupled with Fabry–Perot cavities
Authors: Kang Evan S. H. , Chen Shangzhi , Đerek Vedran , Hägglund Carl , Głowacki Eric D. , Jonsson Magnus P.
Published: January 2021

We investigate charge transport in ambipolar organic thin-film transistors coupled to a Fabry–Perot cavity.
Highly thermally conductive liquid metal-based composites with superior thermostability for thermal management
Authors: Jia Li-Chuan , Jin Yi-Fei , Ren Jun-Wen , Zhao Li-Hua , Yan Ding-Xiang , Li Zhong-Ming
Published: January 2021

Mechanically strong and thermostable composites are prepared for thermal management based on soft liquid metal and rigid aramid nanofibers.
Spatial quasi-periodic variations of the plasma density and magnetic field in zebra radio sources
Authors: Karlický M. , Yasnov L. V.
Published: January 2021

Context.Radio bursts and their fine structures are an integral part of solar flares. Fine structures in particular are used for diagnostics of solar flare processes. The so-called zebras belong to the most important of such fine structures.

Aims.We analyze seven zebra events in order to search for spatial variations in the plasma density and magnetic field in zebra-stripe sources.

Methods.We used an improved method for estimating the gyroharmonic numbers of zebra-stripe frequencies. We compared observed zebra-stripe frequencies with those calculated in the zebra model. The differences in these frequencies vary and thus show spatial variations in the plasma density and magnetic field.

Results.In six out of seven analyzed zebras, we found a rather high correlation coefficient (about 0.7 and higher) between spatial variations in the density and magnetic field and a strictly periodic function. These density and magnetic field variations are explained by the torsional or sausage magnetoacoustic waves in the loop in which zebra-stripe sources are located. We present the wavelengths of these waves in dependence on the zebra frequency and estimate their periods.
The model of functioning of cargo transportation subsystem
Authors: Korchagin Viktor , Rizayeva Yulia
Published: January 2021

Developed the methodology for the organization and control of functioning of cargoes transportation system under real conditions of vehicle operation. The model management system allows you to maintain the biosphere-compatible equilibrium and the balanced interaction of all subsystems. The use of the created system of cargo delivery management taking into account the biosphere-compatible criterion is important and progressive in the created conditions, since it became possible to take into account the criteria when searching for the most economically and ecologically way of delivering goods.
Methods for absorbing kinetic energy with consideration of delay limit value
Authors: Rajczyk Jarosław , Rajczyk Marlena , Kalinowski Jarosław , Wydział Budownictwa
Published: January 2021

In this paper the potential of kinetic energy absorption by means of energy absorbing and storing mechanisms was discussed. The use of energy absorbers is intended to reduce the maximum working forces when stopping the body.
Forecasting the hazards of transport flows
Authors: Volkov Vladimir , Kastyrin Dmitriy , Lebedev Evgeniy
Published: January 2021

The analysis of the indicators of the danger of conflict points on the equivalent intersections of roads along two directions of traffic of cars is considered: directly and to the left. Information is provided on the calculation of the forecast characteristics of the danger formed at the intersection of conflicting points in the current time mode by the input values of the speed of cars moving straight and to the left. Variations in the intensity of movement of cars moving in these two directions along the hour intervals are taken into account. Using the proposed methodology allows you to make decisions about the limitations of speed regimes and directions of traffic along the lanes of the carriageway.
Technique for ensuring safety of transportation vehicles through the analysis of their structural reliability
Authors: Repin Sergei , Evtyukov Stanislav
Published: January 2021

The article is devoted to the development of a technique for the assessment of the influence of the structural reliability of transportation vehicles on their safety. This technique includes: an analysis of the automotive vehicle as a complex technical system, its structural elements greatly influencing road safety (RS); calculation of mean-time-between-failures and time for recovery of subsystems, assemblies and parts, probability of failure-free operation. As a result of the technique application, recommendations as to intervals of the replacement of automotive vehicle’s elements depending on the required probability of failure-free operation are released.
Diagnostic assessment of an impact of static and dynamic vehicle loads on covering of roadway
Authors: Kurakina Elena , Evtyukov Sergej , Rajczyk Jaroslav
Published: January 2021

The article presents diagnostic possibilities for testing covering of roadway through dynamic and static loading units. The article presents features, advantages and principal characteristics of the equipment: die unit, Dina-3M, UDN-NK, Dynatest unit. The main parameters of the dynamic impact units. The article also presents results of tests by dynamic and static loading, defines «flexural bowls», elastic module and the coefficients of reduction of the elastic modulus to the static modulus.
Selection of schemes for delivery of foreign trade cargoes using digital technologies
Authors: Efimova Olga , Vakulenko Sergey , Kurenkov Petr , Magomedova Naida , Rudakova Elena
Published: January 2021

The article deals with the problem of transport management in all types of communication in the context of digitalization. Possible schemes of interaction between the subjects of the transport services market and various modes of transport in foreign trade transportations in mixed messages are presented. It is recommended that when choosing a route for transport and freight flows, take into account all types of interaction and coordination of activities of various types of transport, as well as subjects of transport and other markets.
Increasing the Durability of Asphalt Pavement - the Road to Road Safety
Authors: Yadykina Valentina , Sharapov Rashid , Pashkova Christina , Gridchin Anatoly , Trautvain Anna
Published: January 2021

Based on literature data, the paper analyzed the impact of transport operational indicators related to the quality of road surface coverage on road safety. It presented the results of experimental studies on the effect of the road adhesion cationic thermostable additive on the properties of bitumen and asphalt concrete. The authors identified that the introduction of this additive leads to an increase in the viscosity and softening temperature of bitumen, its adhesion to mineral materials, which has a positive effect on strength, water resistance, shear stability, crack resistance, fatigue durability of asphalt concrete. The conclusion was made about the regularity of improving road safety, related to the improvement of the quality of the pavement, arranged from asphalt concrete with the application of the tested additive.
Innovative Approach to Sustainable Mobility and Transport Through Big Data From ICT – Pilot Study in Cracow, Poland
Authors: Zakowska Lidia , Bryniarska Zofia
Published: January 2021

New challenges of urban transport are connected to sustainability, the growing urban population globally, life quality and quality of urban environment, reduction of pollution and energy consumption. Sustainable urban mobility is no more dependent only on passenger transport efficiency, but also on transport accessibility of commuting services, acceptable level of comfort, safety and security of urban public transport and many more. Although a huge amount of data are available from modern communication services, the question of how to use those big data efficiently to improve urban mobility is unknown. Positive changes of mobility attitudes and travel behavior of citizens are going slowly, which means that personal motivation do not follow big data availability. This motivation is dependent on quality of public transport offer and services, among which information services are suspected to play a crucial role. Modern ICT methods of transport information delivery are based on Internet and social media, which through commonly used mobile devices are available at every stage of journey. In this article authors try, based on the pilot survey, to check how young Krakow citizens use social media in every day travels and commuting. The overall goal of the author’s study is to answer the question: how to use big data coming from ICT in order to upgrade urban transport sustainability.
Information Support of Efficiency of the Transportation Process
Authors: Baskov Vladimir , Isaeva Ekaterina
Published: January 2021

The use of information technology affects the congestion of the transport network. Coordinated control is designed to ensure non-stop passage of a group of cars through all the regulated intersections of the highway at a certain speed. As part of the application of the latest information technologies, the following indicators of the quality of transportation can be improved: timeliness of transportation, transportation safety, economic indicators, transportation speed, information services.
Using Data of Control Public Points for Obtaining Values of Speeds on Ribs of the Roads
Authors: Borovskoy Alexey , Lukyanov Alexandr , Borovskaya Olga , Kravchenko Andrey
Published: January 2021

A new developed scheme of public transport of the Belgorod agglomeration was introduced into the GIS system. This system allows to create a complete graph of roads with directions of public transport, as well as various information necessary to compile a full database. The data of dispatching points of public transport for obtaining velocity values on the edges of the graph of the roads of the city roads was surveyed.
Evolution of the “Ecology” of the Transport Complex
Authors: Chebotaev Alik , Ivakhnenko Andrey M. , Belyaev Vladimir , Ivakhnenko Andrey A. , Faddeeva Ekaterina
Published: January 2021

The article is devoted to the interaction between the transportation sector and the environment in terms of global emission of greenhouse gas CO2 during combustion of various types of motor fuels. We offer a closed-tech recycling CO2 cycle by natural environment without using non-renewable oil fuels. Offered rate principles of green, characterized a complex level of vehicle impact on human environment.
Does magnitude of deformity correlate with functional outcome following closed reduction in unilateral condylar fracture?
Authors: Nabil Syed , Nazimi Abdul Jabar
Published: January 2021

Introduction: Condyle fracture can be treated surgically (ORIF) or conservatively (CTR). When treated by CTR, the fracture might not heal in a morphologically ideal shape. The severity of the deformity and its effects on the functional outcome is not known. This study would investigate the anatomical outcome of CTR and its effect on the functional outcome. Methods: Using a cross-sectional study design, we enrolled patients identified from our trauma census that meets the pre-determined inclusion criteria. Patient underwent assessment which involves clinical and radiographic evaluation. Clinical examination was done by using Helkimo Index. Radiographic evaluation by using cone beam computed tomography (CBCT) scan were traced and digitized, and the position and morphology of the fractured mandibular condyle was measured and compared with those of the contralateral non-fractured condyle in the axial, coronal and sagittal planes. Radiographic data was then compared with data from clinical examination. Results: 25 patients with unilateral condyle fracture and met the inclusion criteria were identified. Eight patients were successfully recalled and included in the study. Assessment was done on average of 40 months post-treatment. Clinical assessment with Helkimo Index showed that 63% had at least mild temporomandibular symptoms or dysfunction. CBCT examinations revealed that most patients had morphologically deformed healed condyle. No pattern can be seen in the magnitude of deformity with functional outcome. Conclusions: Following CTR, condyle fracture would heal in a morphologically deformed shape. Satisfactory functional outcome is still attainable despite this. The magnitude of the deformity does not appear to influence the functional outcome.
An elastic higher-order topological insulator based on kagome phononic crystals
Authors: Wang Zhen , Wei Qi
Published: January 2021

Recently, the novel bulk–edge–corner correspondence of higher-order topological states had attracted increasing attention. Past research studies on higher-order topological insulators, however, have mainly concentrated on the topological multipole states within the low-frequency bandgap for airborne sound waves. In this paper, we propose a higher-order topological insulator with kagome symmetry based on two-dimensional elastic phononic crystals (PNCs), which can operate in the high-frequency bandgap. Topological corner and edge states are both achieved in well-designed finite PNCs. In addition, we demonstrate the robust characteristics of elastic topological corner and edge states in PNCs with different defects (e.g., cavities, disorders, and bends). As the analog counterpart for classical waves, the proposed PNCs provide an alternative scheme for research into the topological phases of matter in macroscopic systems.
Synthesis of reduced graphene oxide/cobalt ferrite composite particles and their magnetorheological characteristics
Authors: Dong Yu Zhen , Choi Hyoung Jin
Published: January 2021

The reduced graphene oxide/cobalt ferrite (rGO/Co-Fe) magnetic composite particle was synthesized via a solvothermal process and employed as the magnetorheological (MR) material. The morphology of rGO/Co-Fe was observed by SEM, the chemical structure was confirmed by FT-IR, and the rheological properties of rGO/Co-Fe when suspended in silicone oil were studied by a rotational rheometer under different magnetic field strengths. Along with shear stress curves of rGO/Co-Fe based MR fluid tested in a controlled shear rate mode, their magnetic field strength-dependent yield stresses were observed to fit the universal yield stress function well.
Uniform

-stability modulo a subgroup
Authors: Li Y. , Tian G. , Zhu X.
Published: January 2021

In this paper, we prove a version of uniform

-stability for a pair

with respect to a reductive Lie group

modulo a subgroup

of

.

Bibliography: 7 titles.
Cylinders in rational surfaces
Authors: Cheltsov I. A.
Published: January 2021

We answer a question of Ciliberto’s about cylinders in rational surfaces obtained by blowing up the plane at points in general position.

Bibliography: 13 titles.
Macrostructure in the narratives of Indonesian-Dutch bilinguals
Authors: Tribushinina Elena , Irmawati Mila , Mak Pim
Published: January 2021

There is no agreement regarding the relationship between narrative abilities in the two languages of a bilingual
child. In this paper, we test the hypothesis that such cross-language relationships depend on age and language exposure by
studying the narrative skills of 32 Indonesian-Dutch bilinguals (mean age: 8;5, range: 5;0–11;9). The narratives were elicited by
means of the Multilingual Assessment Instrument for Narratives (MAIN) and analysed for story structure, episodic complexity and
use of internal state terms (ISTs) in the home language (Indonesian) and majority language (Dutch). The results demonstrate that
story structure scores in the home language (but not in the majority language) were positively related to age. Exposure measures
(current Dutch/Indonesian input, current richness of Dutch/Indonesian input, and length of exposure to Dutch) did not predict the
macrostructure scores. There was a significant positive cross-language relationship in story structure and episodic complexity,
and this relationship became stronger as a function of length of exposure to Dutch. There was also a positive cross-lingual
relation in IST use, but it became weaker with age. The results support the idea that narrative skills are transferable between
languages and suggest that cross-language relationships may interact with age and exposure factors in differential ways.
Bouncing scenario of general relativistic hydrodynamics in extended gravity
Authors: Shaikh A Y , Mishra B
Published: January 2021

In this paper, we have framed bouncing cosmological model of the Universe in the presence of general relativistic hydrodynamics in an extended theory of gravity. The metric assumed here is the flat Friedmann–Robertson–Walker space–time and the stress energy tensor is of perfect fluid. Since general relativity (GR) has certain issues with late time cosmic speed up phenomena, here we have introduced an additional matter geometry coupling that described the extended gravity to GR. The dynamical parameters are derived and analyzed. The dynamical behavior of the equation of state parameter has been analyzed. We have observed that the bouncing behavior is mostly controlled by the coupling parameter.
Remote weak-signal measurement via bound states in optomechanical systems
Authors: Li Xun , Xiong Biao , Chao Shilei , Zhao Chengsong , Tan Hua-Tang , Zhou Ling
Published: January 2021

A scheme for remote weak-signal sensors is proposed, in which a coupled-resonator optical waveguide (CROW), as a transmitter, couples to a hybrid optomechanical cavity and an observing cavity at its two ends. Non-Markovian theory is employed to study the weak-force sensor by treating the CROW as a non-Markovian reservoir of cavity fields. The dissipationless bound states in the non-Markovian regime are conducive to remotely transmitting a signal in the CROW. Our results show that a sensor with ultrahigh sensitivity can be achieved with the assistance of bound states under certain parameter regimes.
Arctic tourism in the Barents Sea Region: current status and boundaries of the possible
Authors: Sevastyanov D V , Grigoryev A A , Paranina A N , Obyazov V A , Kiseleva M V
Published: January 2021

Russia faces a promising task of integrated use of various resources of the Arctic, including tourism and recreation. In order to provide a sustainable socio-economic development of the polar regions and the country as a whole, it is necessary to conduct interdisciplinary studies of the resources and assimilation capacity of geographical systems based on methods used in socio-economic and physical geography, as well as in cultural geography. In the article the present conditions and trends in the tourism development of the Arctic Zone of the Russian Federation (AZRF) are considered as well as the features of its organization in the Barents Sea Region. The existing problems and prospects of the tourism development in the Arctic under modern conditions are discussed on the example of actively increasing cruise tourism in the region. Moreover, the factors limiting the development of Arctic tourism in the Russian Federation are considered. Conclusions based on comprehensive analysis of current opportunities and constraints in the Barents Sea region are drawn about the need for reconstruction and development of maritime transport and navigation infrastructure throughout the planned ship corridor along the Northern Sea Route (NSR) and the resumption of the ports of Dudinka, Dikson, Tiksi, Pevek and Provideniya. Further progress of mass ecological and cruise tourism in the Barents Sea basin requires scientific rationing of visits to protected areas and the organization of environmental events in places of excursions.
Comprehensive socio-economic development of Arctic territories of the Russian Federation: case of risks in the coordinate plane.
Authors: Voronina E P
Published: January 2021

Nowadays the development of Russian Arctic territories became a paramount problem of socio-economic development of our country and technical growth. Such a breakthrough can come true because of an effective state politics (rising of life grade, high standard investment protection by the law, strict requirement of protecting nature) and attracting of investment to comprehensive development of Arctic regions, including risk projects in long. However, the provisions of the state policy about the Arctic region is not completed today. The comprehensive way of region development is not shown. The specific Arctic conditions and especially a commerce control not completed too. The possibility of comprehensive socio-economics growth of the region is addicted to its potential, ability of adaptation for innovations and well risk management. All these factors define a relevance of risk research. In this article presented a risk analysis, defined and systemized the risk factors, on the base of spatial structuring in the coordinate plane, including trends of development and area features with region own potential and quality of socio-economic region development control. The case of risk and accounting have to become a part of the making an administration decisions to decrease the risk influents with using an integrated risk management.
Proving the Pasteurization Mode of the Canned Fish Using culture of Enterococcus Faecium
Authors: Demid A , Kuranova L , Grohovsky V , Volchenko V , Glazunov Y
Published: January 2021

This article considers the questions of developing the pasteurization modes of the canned foods of D group which is an actual direction in the modern food technology. The culture of Enterococcus faecium has been chosen in quantity of 1 107 CFU/g. The possibility of using these microorganisms as a test culture during scientific proving the developed mode of pasteurization of canned foods called “Trout in olive oil with the addition of pickled pineapple” has been proven in this article. The test results have proven the microbiological safety of used semi-product (fish and canning mass) before pasteurization: QMAFAnM is 6.2 103 CFU/g for trout and 9.0 103 for canning mass; pathogenic and conditionally pathogenic microorganisms haven’t been found.The thermostability constant of D have been determined experimentally by heating the culture of Enterococcus faecium in capillaries at the temperature of 80 – 95 º? during the prefixed time followed by calculating the number of survived cells and data processing using graphical method and least square method. The normative pasteurization effect has been calculated using previously determined thermostability constants, it is of 52.9 conditional minutes. This value has been used for determining the optimal duration (60 minutes) of pasteurization process of canned foods at the temperature of 85 º?. The effective and scientifically proved pasteurization mode of canned foods of D group called “Trout in olive oil with the addition of pickled pineapple” has been chosen.
Life Cycle Management of the 3D-printer Technology to Design an Underwater Drone Hull to Study the Arctic
Authors: Kozlova E V , Yakinchuk V V , Starikov K A , Bolshakova A V , Bocharov A A
Published: January 2021

The paper deals with life cycle management of a 3-D printer technology to design an underwater drone hull to study the Arctic. The Arctic region is of strategic importance for the Russian Federation and the entire world community. Due to harsh climatic conditions the scientists started to search for more efficient ways of not only using resources of the territory but also retaining sustainable development of the region. The paper presents a graph that includes activities involved in a 3-D printer life cycle design. A 3-D printer is used for a layer growth of an underwater drone’s hull. The authors took into consideration all the existing options of development, operation and disposal of a particular 3D printer and identified eight variants of its life cycle design based on various financial resources and timing budgets. The study helped to identify a number of effective options. Information and mathematical systems support the implementation of the life cycle management of technology. We selected the following mathematical tools: mathematical programming methods, mathematical statistics, process simulation tools, routine problems, queuing theories. The paper focuses on such information management tools as systems programs, development programs and application software.
Tourism branding of the Russian Arctic destinations
Authors: Timoshenko D S
Published: January 2021

The purpose of the study is to identify the main conditions for the tourism destinations formation in the Russian Arctic and to develop theoretical, methodological and practical recommendations for promotion and branding. The crucial principles of Russian state policy in the Arctic, aimed at protecting national interests, including tourism, have been determined. The factors of tourism destinations branding and the multidimensionality of tourism space in the Russian Arctic are analysed. The tourism identity of the Russian Arctic is revealed. The factors that determine the promotion and branding of tourism destinations in the Russian Arctic are considered in correlation with the fundamental principles of Arctic tourism sustainability. The research uses a dialectical method, as well as general logical, theoretical and empirical methods. The article defines the conditions for increasing the competitiveness of the domestic tourist product in the Arctic, lists tourist sites and attractors, territories and tourist products that are of the most pronounced interest for domestic and foreign tourists. The article presents the components of the image of tourism destinations in the Russian Arctic, which can become the basis for tourism branding strategy. The necessity of creating conditions in the Arctic regions of Russia for the professional implementation of tourist personnel and the influx of labour resources from urbanised and oversaturated territories is substantiated.
Vessel movement velocity as the integral parameter of ice navigation conditions
Authors: Yu Tretyakov V , Sarafanov M I , Fediakov V E , Frolov S V
Published: January 2021

The publication is considered methodology and preliminary results of computer processing of vector ice charts and simulation of ice navigation by empirical statistical model, which was designed in the AARI. The model is result of generalization of multi-year special ship ice observations, produced by the AARI scientists. The Institute has unique archive of ice charts, which were made by recognition of satellite images, their composition and vectorization. The archive covers the period since 1997. Average navigation velocity and total time expenditure for sailing along a route can be used as the objective indexes of the ice navigation conditions. In the article is presented detailed description of the technique for preparing data for numerical experiments with the empirical statistical model by applying the ice charts from the archive. The data preparing is processed in ArcGIS by means of specially designed computer programs. The numerical experiments simulate ice navigation of “Arctica” nuclear icebreaker. The comparison between the average navigation velocity and time expenditure for sailing along the route “Sabetta Port – Kara Gate Strait” at simulation of ice conditions in the first ten-day interval of May 1998 and the same temporal interval of 2019 indicates significant improve of the ice navigation conditions.
Management of the design and construction process of a thermal power plant under conditions of permafrost instability
Authors: Didenko N I , Skripnuk D F , Bobodzhanova L K , Hazov V K
Published: January 2021

The key issues of the process of the design and construction of a thermal power plant and the life cycle management of a thermal power plant under conditions of permafrost instability are considered. The article aims to develop information, mathematical and software support for the design and construction process supervising and testing of construction objects of a thermal power plant and life cycle management of a thermal power plant under conditions of permafrost instability. The following tasks arising in the process of achieving the given goal are presented: to study the characteristics of the constructed thermal power plant; to present the design and construction process of a thermal power plant in the form of an alternative graph; to identify alternatives and risks in the life cycle management system; to develop an investment project for a thermal power plant located in the Arctic region of the Russian Federation and to choose an effective option for the project implementation. It is shown that the design and implementation of projects for the construction of thermal power plants under conditions of instability of permafrost is characterized by the complexity of planning, large costs and a large number of operations. The practical significance of the work is determined by the possibility to apply the presented procedure for managing the design and construction process of a thermal power plant under conditions of permafrost instability when it is necessary to construct new thermal power plants in the Arctic region of the Russian Federation.
Experimental measurements of deflation in steppe landscapes of Priol’khonie (Lake Baikal region)
Authors: Solodyankina S V , Vanteeva Yu V , Znamenskaya T I , Opekunova M Yu
Published: January 2021

The quantitative value of the deflation processes in the steppe landscapes of Priolkhonie was obtained during field experimental studies in the summer seasons of 2017-2019 years. The quantity and properties of the transported particles were determined and statistical analysis of factors (parameters of test sites and weather conditions) affecting the erosion advancing was identified. The measurements were made with a set of dust traps at different heights from the surface, as well as a particle counter and a digital thermo-anemometer. Also, we surveyed the size (fractions) of trapped particles as well as soil samples from the upper soil horizon at the test sites. A comparative analysis of the native and transformed landscapes is carried out. According to results of multiple regression analysis, the main landscape factors that positively affect the deflation are: the quantitative ratio of the fractions of the granulometric composition of the upper horizon of the soil (the positive relationship with silt and dust content is most often expressed) and the steepness of the slope, and the negative relationship is most pronounced with rockiness soil and a projective cover of herbaceous vegetation. We found out that the development of deflation processes in the study area is primarily due to natural factors (features of the soil cover) and increases with anthropogenic impact, which affects the state of the vegetation cover and the particle-size composition of soils.
Reproductive health and environment at the Russian Far East: objective conditions and subjective assessments
Authors: Sukhoveeva A B , Grigorieva E A
Published: January 2021

The quality of the living environment of the population as an external, objective factor, determines the level of comfort, affects its quality, health, reproduction and decision-making on migration. The quality of the environment is of a potential nature, serving as a basis for the socio-economic development of the region; it has a comparative nature in its original content and assumes a comparison of the specific indicators in spatial terms. Given the significant contrasts in environment at the Russian Far East (RFE), even small changes in natural and climatic conditions are crucial for determining quality of life of the population. Differences of environmental: natural, demographic, economic and social quality – were studied for regions at the southern part of the RFE. Sociological survey of women of reproductive age (17-45 years old) within both urban in rural areas in the Nanai District of Khabarovsk Krai, and Smidovichsky District of the Jewish Autonomous Region, gives a whole picture of their self-assessment of ecological, social and economic environment. Disproportions in the development, the main issues specific to individual areas, and spatial behavior of the residents are analyzed. Social and economic divergences are reflected in subjective estimates of native and non-indigenous women of reproductive age.
Optimization of environmentally-oriented resource management
Authors: Tsibulnikova M R , Sharf I V
Published: January 2021

Environmentally-oriented natural resource management is associated with the concept of sustainable development, which is based on the balance of interests between economic industry development and ecosystem conservation that gives greater urgency to the task of considering the regional development and the effect of mineral extraction on long-term regional development. The research purpose is comparative analysis of the contemporary development trends of oil-producing regions. The research hypothesis suggests that depletion rate of non-renewable resources, if not supported by institutional mechanisms of stimulating economic regional growth, results in development of conditions for “resource curse” as evidenced by the dynamics of different socio-economic indicators of regional development. The research areas are Tomsk and Irkutsk Oblasts and Krasnoyarsk Krai. The research is based on the evaluation methods of mineral resource depletion (oil) allowing for necessary magnitudes of rental income re-investment as well as economic-statistical methods of socio-economic dynamics to reveal the trends of regional development. The research results have shown that the regions do not receive the necessary amount of investments for economic diversification. Tomsk Oblast is characterized by impressive demonstration of “resource curse”, whereas Irkutsk Oblast is just at the early stage of that journey. The Krasnoyarsk Krai economy is more diversified. Calculation of socially dangerous depletion of oil reserves can serve as information for adequate justification of compensation approach towards sharing oil revenue taking into account re-investment of natural resource rent into socio-economic regional development.
Transformation of the ethnic cultural landscape of the Barguzin Cis-Baikal region (late 19th–early 21st centuries): resettlement and population dynamics
Authors: Tsydypova L S
Published: January 2021

The article presents the results of the study of the settlement of local communities and changes in the cultural landscape of the Barguzin Cis-Baikal region in the 19th-early 21st centuries. We discuss the formation and development of ties within local groups and the formation of settlements. The research is based on archival and literary sources as well as field materials of the author. Using the historical-geographical approach, we reveal the features of the formation of the population in the Barguzin Cis-Baikal region confined to the cattle breeding, hunting, and agricultural complexes. We determine the factors for the formation of cultural traditions of local groups, which continue to be a reference point in the habitation of territory. The research methodology takes into account the features of the convergence of time and territorial stages of change in ethnic and territorial identification. We consider the role of migrations, natural conditions and the economic specifics of new settlements, continuity, geographical and social mobility of the local population reflected in archival sources. Qualitative methods of cultural geography allow us to identify the ratio of ethnic composition in settlements in dynamics. The historically formed areas of geocultural complexes of local communities are a prerequisite for the sustainable development of unique landscapes. Most of them arose from a rethinking of the name by a native speaker.
Cooperation in the countries of North-East Asia (environmental aspect)
Authors: Zabortseva T I
Published: January 2021

The article deals with the deep analysis of current cooperation of the countries of North-East Asia (NEA) on the formation of environmental policy in order to regulate further relationships, improve the ecological, socio-economic well-being of the population living in global instability. This consolidation includes geographically six states: China, Democratic People’s Republic of Korea, Mongolia, the Republic of Korea, Russian Federation and Japan). The format of subregional geographic approach in the comprehensive activities of the UNESCAP (Economic and Social Commission for Asia and the Pacific of UN), including the environmental sphere, turned out to be successful. Thus, the Subregional Program of North-East Asia for Cooperation in the Field of Environmental Protection (NEASPEC) became the most important and effective policy instrument in the 21st century. The development of sub-regional cooperation in the field of low-carbon urban spaces continues as a promising platform to address the challenges of global climate change and rapid urbanization – NEA LCCP (North East Asia Low Carbon City Platform). The article presents the results of the initiated Russian research on the example of the administrative center of the subject of the Siberian Federal District – Irkutsk – a large cultural, historical and economic city of the Baikal natural territory.
Transformation of geosystems of the Baikal natural territory (research and mapping)
Authors: Konovalova T I
Published: January 2021

The article deals with modern ideas about the transformation of geosystems and offers methodological foundations of its study. We considered the geosystem transformation in the context of changes in essential properties as a result of manifestation of transformative dynamics and geosystem evolution. It was revealed that the main trend of their transformations is largely determined by the impact of neotectonic processes. Singularities in the changes are assessed against the background of natural transformations of geosystems in the Late Cenozoic, when systemic connections, similar to modern ones, began to form. We noted that in most of plains and low-mountain areas of the area under study, a potential analogue of the natural complexes transformation in the Pliocene is currently being formed due to the development of aridization processes. We cite an instance of geosystem transformation of the Baikal natural territory. The methodology of mapping the transformation of geosystems, which is based on the mapping of system connections, transforming dynamics and evolution of geosystems, is considered. The research is based on information synthesis of data about the territory of Siberia, on the results of long-term ground route observations using the methods of complex physical and geographical research, comparative geographical, genetic, cartographic and GIS.
Analysis of the Influence of Differential Consolidation Settlement of Foundation on Redistribution of Internal Forces in Superstructure of Buildings
Authors: Huang Jianglong
Published: January 2021

In order to explore the influence of differential settlement of foundation on the internal force and deformation of super-frame structure, the stress and deformation of the traditional fixed support model and the elastic support model under the local effect of the differential settlement of the two columns are compared. The model without considering the settlement of the structure (Model 1), the traditional fixed support model (Model 2), and the vertical elastic support model (Model 3) are respectively constructed for analysis. The left end of the frame column and A/1-2 beam are taken as an example, the axial force of the frame column in Model 3 significantly decreases from -817.8kN to -415.3kN compared with Model 1, with a reduction of 49%; the shear force at the left end of the lower A/1-2 beam increases from 42.3kN to 43.5kN with an increase of 3%; and the bending moment increases from -27.2kN⋅m to 152.7kN⋅m. Those indicate the shear force and bending moment of the beam directly connected with the subsidence column under the action of the elastic support model are smaller than that under the action of the fixed support model. It is hoped that these change rules can provide reference for the design and reinforcement of similar projects in the future.
Study on Reservoir Heterogeneity of Putaohua Oil Layer in Gulongnan Area
Authors: Lv Yajuan
Published: January 2021

Putaohua oil layer is the main target layer in gulongnan area. The reservoir is mainly sheet sand with thin thickness, heavy mud content and poor physical properties. In recent years, the development effect of different blocks in this area is quite different. In this paper, the reservoir heterogeneity in Gulongnan area and each block is studied to provide reliable geological basis for improving oilfield development effect. Through the analysis of intra-layer, inter-layer and plane heterogeneity, it is considered that the overall reservoir heterogeneity in Gulongnan area is strong. In terms of deposition units, the heterogeneity of PI1, PI3 and PI6 is relatively strong, while the heterogeneity of PI2 and PI7 is relatively weak, and the remaining units are in between. In terms of zoning, the heterogeneity in G6 block is weak, the heterogeneity in M1 and A1 blocks is strong, and the heterogeneity in D1 block is the strongest. The application of heterogeneity analysis results provides strong support for promoting oil well effectiveness and delaying water breakthrough time.
Study on spatial-temporal dynamic change of vegetation coverage and its influencing factors in blue economic zone of Shandong Peninsula: taking Qingdao as a case
Authors: Liu Fangyu , Xiao Xingyuan , Shang Luxiang , Huang Xiao
Published: January 2021

The vegetation cover of Qingdao city has changed significantly under the dual influence of climate change and the implementation of blue ocean strategy. The spatial- temporal dynamic change characteristics of vegetation coverage in Qingdao were quantitatively studied on the county-level scale and the man-made and natural driving factors were analysed spatial-statistically by using the dichotomy pixel model Based on Landsat remote sensing data of Qingdao in 2000, 2008 and 2016. The results suggest that: (1) the overall evolution of vegetation coverage declines from 65% to 63% from 2000 to 2016. (2) Significant spatial difference of vegetation coverage is found at the county scale. The vegetation coverage of Jiao Nan increased, while that of Jimo decreased from 2000 to 2008. Jiao Nan had the highest vegetation coverage between 2008 and 2016, while Jiao Nan, western Jimo and Pignut all increased significantly. The vegetation coverage of eastern coastal urban area dropped dramatically to reach the lowest record in each phase of the three-year data. (3) The influence of climate factors on vegetation coverage is not significant, while the human activity is the leading factor causing the evolution of vegetation coverage in Qingdao where urbanization is negatively correlated with the change in vegetation coverage. Furthermore, population migration also has an impact on the vegetation coverage.