bluuebunny/crossref_metadata_2025_split huggingface dataset:
Manipulating electronic dynamics of 8-Pmmn borophene with surface optical phonons
Authors: Akay Defne 
Published: January 2021

Abstract
In this work, the effects of surface optical (SO) phonons on the electronic spectrum of 8-Pmmn phase borophene have been investigated. To describe the analytical model we used a Fröhlich-type Hamiltonian on a borophene system within the continuum limit. Then, by following the analytical model with the Lee–Low–Pines variational approximation method, including two successive unitary transformations, the system Hamiltonian has been diagonalized. Our theoretical analysis indicates that SO absorption of the system strongly depends on the substrate-induced effects of the system. Moreover, it is observed that the polaronic energy gap decreases when increasing the internal distance

z

between the 8-Pmmn borophene and the particular substrate. Also, the energy gap increases with increasing phonon energy (

ℏ
ω

). In addition, the resulting bandgap induced by the electron–SO phonon interaction can be tuned by the associated interaction strengths of the substrate. Furthermore, taking lattice vibrations into account, the surface phonon specific heat of the system has been evaluated as a function of temperature. The specific heat becomes constant at high temperatures, as in the Einstein model. We specifically evaluated the contribution from the lattice vibrations on specific internal distances, z. The increase in the internal distance z causes the peak to shift to lower thermal energy.
A novel traveling wave piezoelectric actuated wheeled robot: design, theoretical analysis, and experimental investigation
Authors: Jia Botao , Wang Liang , Wang Ruifeng , Jin Jiamei , Zhao Zhenhua , Wu Dawei 
Published: January 2021

Abstract
Traditional traveling wave robots have strict requirements on the operating interface due to the fact that they usually only work on smooth and flat surfaces, holding the disadvantages of poor load capacity and complex driving mode, and limiting their application range. In order to overcome the above problems, a novel traveling wave piezoelectric actuated wheeled robot is proposed in this study. The robot is composed of a bonded-type piezoelectric actuator and wheel mechanisms. Rotating traveling wave can be produced in the annular parts of the piezoelectric actuator to drive the wheel mechanisms. In order to study the dynamic characteristics of the piezoelectric actuator, an electromechanical coupling model is developed by using the transfer matrix method. Then the prototype of the piezoelectric actuator is fabricated and assembled, and its vibration characteristics are measured to confirm the feasibility of the developed transfer matrix model. Finally, performance evaluation investigations of the proposed traveling wave piezoelectric actuated wheeled robot are conducted. Under the excitation voltages of 350 V
pp and the phase difference of 90°, the robot prototype achieved a step climbing angle of 75°, a maximum no-load velocity of 136.8 mm s−1, and a maximum payload of 320 g. The proposed traveling wave piezoelectric actuated wheeled robot presents expected terrain adaptability and obstacle climbing capability.
Modulation instability, rogue waves and conservation laws in higher-order nonlinear Schrödinger equation
Authors: Dong Min-Jie , Tian Li-Xin 
Published: January 2021

Abstract
In this paper, the modulation instability (MI), rogue waves (RWs) and conservation laws of the coupled higher-order nonlinear Schrödinger equation are investigated. According to MI and the 2 × 2 Lax pair, Darboux-dressing transformation with an asymptotic expansion method, the existence and properties of the one-, second-, and third-order RWs for the higher-order nonlinear Schrödinger equation are constructed. In addition, the main characteristics of these solutions are discussed through some graphics, which are draw widespread attention in a variety of complex systems such as optics, Bose–Einstein condensates, capillary flow, superfluidity, fluid dynamics, and finance. In addition, infinitely-many conservation laws are established.
SiGoba - Learning Media Based on Android Applications for Introducing Medicine’s Classes and Functions
Authors: Mustafidah H , Prihardianto O , Fatimah V A N , Fitri A S , Fitriana Y A N , Suwarsito S 
Published: January 2021

Abstract
In this covid-19 era pandemic, people are required to use computer technology to run the wheel of life, including learning something. Internet users, including smartphone users in Indonesia, are more than half of the population. Meanwhile, the body must be protected so that the body’s immunity is not susceptible to disease. If you are already sick, you must immediately be treated with the right medicine. If the use of drugs is not proper, surely the pain will get worse. But there are still many people who do not understand the class and function of drugs as they should. Therefore, this research develops an android-based application called SiGoba, an information system as a learning medium to recognize the class and function of drugs according to the Indonesian Drug Specialist Information (ISO). Drug data used are drugs commonly consumed by Indonesian people to treat minor ailments. This system was built using the waterfall model, with black-box testing. The system test results show that SiGoba has a function as a learning medium for recognizing drug classes and functions. We hope that SiGoba can be a learning media for the community so they can learn about how to use drugs according to their groups and functions, so it does not cause medication wrong. If this happens, it will have an impact on the recovery of the illness.
Mitigating the impact of bad rainy seasons in poor agricultural regions to tackle deforestation
Authors: Leblois Antoine 
Published: January 2021

Abstract
Land use changes are known to account for over 20% of human greenhouse gas emissions and tree cover losses can significantly influence land-climate dynamics. Land-climate feedbacks have been identified and evaluated for a long time. However, in addition to the direct effect of climate change on forest biomes, recent sparse evidence has shown that land use changes may increase as a result of weather shocks. In Western and Central Africa, agriculture is the main source of income and employment for rural populations. Economies rely on agricultural production, which is largely rainfed, and therefore dependent predominantly upon seasonal rainfall. In this article, I explore the impact of seasonal rainfall quality on deforestation, by combining high-resolution remotely-sensed annual tree cover loss, land cover, human activity and daily rainfall data. I show that in poor regions that are mainly reliant on rainfed agriculture, a bad rainy season leads to large deforestation shocks. These shocks notably depend on the proportion of agricultural land and on the remoteness of the areas in question, as remoteness determines the ability to import food and the existence of alternative income sources. In areas with significant forest cover, a short rainfall season leads to a 15% increase in deforestation. In unconnected areas with small proportions of crop area, the increase in deforestation reaches 20%. Findings suggest that a refined understanding of the land use changes caused by rainfall shocks might be used to improve the design and effectiveness of development, adaptation and conservation policies.
“Smart” city” concept for settlements in the Arctic zone of the Russian Federation
Authors: Didenko N I , Skripnuk D F , Kulik S V , Kosinski Eryk 
Published: January 2021

Abstract
The paper deals with issues related to the use of the concept of a “smart” city. It is concluded that the “smart” city concept is reviewed in the scientific literature and has practical achievements for large cities. The analysis of features of the Arctic zone of the Russian Federation in the context of innovative development is carried out. The analysis of the process of population distribution in the Arctic zone of the Russian Federation and its result - a network of settlements - is presented. The conclusion is made that the Arctic zone should be the place where, first of all, it is necessary to test the “smart” city concept, and the existing network of settlements and interrelation of various types of settlements in the Arctic zone should be used as the objects of using the technologies of the “smart” city concept and their applications. The technologies of the “smart” city concept, which can be used for different types of settlements in the Arctic zone, are determined. The methodological approach taken as the basis for this paper includes: a) an analytical review of literature, focused on the geographical, technological, and institutional characteristics and abilities to implement the concept of sustainable development of the AZRF on the basis of using information and communication technologies (ICT), robotics, and intelligent solutions in the projects of the “smart” city; b) conceptual construction of the real-world virtual cyberspace of the AZRF, or a complex of “socio-cyber-physical systems and intellectual space”, which could serve not only for the purposes of monitoring of the mentioned area but in the future could also become a flexible and multi-faceted tool for managing sustainable development of the AZRF. Keywords: Arctic zone of the Russian Federation, development drivers, real-virtual cyberspace, sustainable development, unmanned aerial vehicles.
BIORHYTHMOLOGICAL PORTRAIT OF WORKERS OF THE DRILLING CREW IN EXTREME NORTHERN LATITUDES
Authors: Anastasia Bashkireva , Tatiana Bashkireva , Nadezhda Fateeva , Alexander Severin 
Published: January 2021

Abstract
Each organism at an individual level builds its system of temporary relationships with the different amplitude of oscillations - an individual biorhythmological portrait. Using Holter monitoring in the AnnaFlash2000 software in the ISCIM6 statistical processing, the ultradian rhythms of the driller crew in extreme northern latitudes studied. It revealed that the individual rhythmic processes of acrophase and cardiac rhythm bathyphase, which testify to the leading role of hypoxia, hypercapnia in adaptive mechanisms, influence the joint professional activity of small labour groups. It established that working in different biological rhythms, the driller’s team has a low degree of compatibility. The synchronization of biological rhythms in the team is achieving by the general properties of temperament as phlegmatic. More successful in adaptation - phlegmatic sanguine.
How do Southeast Asian countries participate in the development of the Arctic
Authors: Krasnozhenova E E , Kulik S V , Chistalyova T , Yu Eidemiller K , Karabushenko P L 
Published: January 2021

Abstract
The Arctic has been of particular importance for a lot of countries, but circumpolar states, including Southeast Asia states, for many years. For Southeast Asia state it is very useful to take part in the Arctic development because they get the opportunity to sell their technologies and use their research results. The feature of Southeast Asia states policy is the intention to sell their equipment and to help to provide the region with the appropriate infrastructure. Thus, the economic interests are of the great importance in the cooperation with circumpolar states. For circumpolar states this cooperation is also very important because they may extend their opportunities in the region due to acquiring of the essential technologies.
The Arctic policy of the Republic of Korea
Authors: Krasnozhenova E E , Kulik S V , Chistalyova T , Yu Eidemiller K , Karabushenko P L 
Published: January 2021

Abstract
Nowadays the Arctic attracts a lot of countries all over the world, including Asian ones, due to its features, especially its abundant resources and research potential. In the paper the authors consider the Arctic policy of the Republic of Korea. Shipping and sea trade, oil and gas prospection, scientific research are of particular importance for South Korea. International cooperation with the circumpolar states and protection of indigenous people and nature preservation are also essential for the country. To achieve these goals the government of the state has designed several policy documents which provide the authors with the information for this research.
MILITARY-GEOGRAPHICAL DESCRIPTIONS OF THE ARCTIC AND SUBARCTIC TERRITORIES OF THE RUSSIAN NORTH DURING THE CIVIL WAR AND IN THE 1920-30s
Authors: Mikhailov A A , Abakumova V , Aladishkin I V 
Published: January 2021

Abstract
The article considers the activities of the military bodies of Soviet Russia (USSR) in the military-geographical study of the Arctic and Arctic territories of the Russian North during the Civil War and a decade afterwards. It analyzes some particular descriptions and reviews of the region, as well as reveals the view of military professionals on the natural environment characteristics and economy of the northern territories.
Features of the population settlement system in the regions of the China – Mongolia – Russia economic corridor
Authors: Osodoev P V , Zhamyanova Y B 
Published: January 2021

Abstract
The article presents an analysis of the existing objective conditions and patterns of population distribution on the territory of the China – Mongolia – Russia economic corridor. The study area covers the Inner Mongolia Autonomous Region of China (Inner Mongolia), the central aimags of Mongolia and the Baikal region (Russia). The settlement system of adjacent regions is highly differentiated in terms of natural and geographical conditions, the level of production development, socioeconomic development, and the state of infrastructure. The average population density of the study area is 10.1 people per km2: there are relatively low indicators in the Baikal region, 2.8 people per km2; 4.2 people per km2 are in the central regions of Mongolia, and 21.2 people per km2 are in Inner Mongolia. The highest population density is observed in areas where highways and railways pass. During the period under review (from 2000 to 2018), the indices of population change in adjacent regions amounted to 93.7% in Russia, 129.0% in Mongolia and 106.7% in China. In the study regions, the population lives mainly in cities and large settlements. In the Baikal region, the level of urbanization is 68.6%, in Mongolia – 67.8% and in Inner Mongolia – 62.7%. The growth of cities is mainly due to internal migration, especially in the Russian and Mongolian territories; the process of depopulation of the countryside is taking place.
Transient process modeling in micrologistic transport systems
Authors: Zharkov M L , Kazakov A L , Lempert A A 
Published: January 2021

Abstract
Micrologistic transport systems are ports, transport hubs, railway terminals (railway stations and marshalling yards), and other micro-level transport objects. Such systems are dynamic ones, whose parameters are time-dependent. Consequently, transient processes appear. These processes last for some time and then subside. Then the system goes into a stationary mode of operation. To solve most engineering problems, it is sufficient to find the stationary characteristics of the system. However, some problems require knowledge of the properties of transients. In this paper, we use the previously presented technology for modeling the operation of micrologistic transport systems to study transients in various transport objects. We consider two types of micrologistic transport systems, such as passenger and cargo, and design their models in the form of two-phase and three-phase queuing systems with BMAP flows. For these queuing systems, we compile Kolmogorov systems of ordinary differential equations. Their analytical study is difficult; therefore, to solve such systems, we use numerical methods. Overall, we find the transition probabilities of system states. We compare the obtained probabilities with stationary characteristics, which allows us to draw conclusions about the properties of transients in the considered systems.
Large projects and small communities: the influence of industrial development on remote villages in Eastern Siberia
Authors: Krasnoshtanova N E 
Published: January 2021

Abstract
Nowadays, the development of oil and gas extractive activities and logging industry are occurring actively in Eastern Siberia. These industrial activities transform the habitat of indigenous and other local peoples in Eastern Siberia, who live in remote areas and are engaged in traditional activities. Therefore, the issue of sustainable development of these remote areas acquires special relevance. This article examines the issues of sustainability of such areas in the theoretical framework of the concept of social-ecological systems and their adaptive abilities in changing conditions. On the example of the northern municipality in the Irkutsk Region, we consider the influence of industrial activities on remote small communities and study their adaptive abilities. On the one hand, these communities adapt to changing conditions, continuing to be engaged in traditional activities, but, on the other hand, the growing impact of industrial activities on the natural environment limits these opportunities in the future, as it reduces the reproductive functions of local ecosystems.
Social, economic and ecological characteristics of suburbanization development
Authors: Emelyanova N V , Dugarova G B , Dorjgotov B , Antipina Yu V 
Published: January 2021

Abstract
This study is devoted to the suburbanization as an important stage of agglomeration development. Foreign research into suburbanization has almost a century-old tradition. In Russia the degree of previous study on these themes is low and very few investigations on this problem have been carried out to date. Therefore, the current relevance of the topic presented remains beyond any doubt. The novelty of this research implies that suburbanization is regarded as one of the main trends in the development of the settlement structure of the Irkutsk agglomeration and a new way of life of a large peripheral city. This study permitted us to identify specific features of suburbanization in the Irkutsk agglomeration. The main trends in suburban development are determined, which are due to the economic, social and ecological factors. Of particular importance in this investigation are mapping and geoinformation methods which have great potential for integral real-time presentation and analysis of the suburbanization process. For this purpose, a series of maps displaying different aspects of the study territory (change in population size, dynamics of construction, etc.) has been compiled. We identified five groups of municipalities of the Irkutsk agglomeration according to the development factors of the territory. The findings indicate a sufficiently dynamic process of change in the suburban territory of the Irkutsk agglomeration. The main conclusions are of great practical significance for administrative bodies considering that the development of the network of suburban settlements and its delimitation are most relevant to date.
Assessment of recreational load on the social environment (as exemplified by the Lake Baikal shore)
Authors: Evstropyeva O V , Shekhovtsova T N 
Published: January 2021

Abstract
The prospects for socio-economic development in the regions of Cisbaikalia are associated with the development of tourism industry. The harmonious development of the territory, taking into account the interests of the local population and needs of guests of the territory, is essential to ensure security and satisfaction with the facility services, as well as the well-being of the local population. The article presents a typological approach for assessing the recreational load on the social environment of settlements. The optimal ratio of tourist number to the permanent residents, close to 1: 3 (0.3), was taken as a basis. Noted, that this ratio is a guarantee of the atmosphere of hospitality, and the local population does not experience a significant tourist pressure. Environmental models are also used and contribute to the most complete research of the adaptation processes of the local population to changes in the system of life, introduced as a result of recreational development of the territory. The waterside at Lake Baikal was selected as a model within the boundaries of the central ecological zone of the Baikal natural territory (CEZ BNT). We revealed five types of territories according to the level of recreational load on the social environment.
Ecological state of soils and water resources of the central cities of the urbanized territories of Irkutsk oblast, Buryatia and Mongolia
Authors: Belozertseva I A , Gagarinova O V , Vorobyeva I B , Sorokovoi A A , Emelianova N V , Dorzhgotov D , Enkh-Amgalan S , Lopatina D N 
Published: January 2021

Abstract
As the pace of urbanization accelerates, the quality of life in large cities is becoming increasingly determined by the level of preservation of the components of the natural environment. One of the main ecological living-standard criteria is the quality of water resources and soils. The article analyses statistical and published materials on soil and water pollution of the Baikal region. Soils and surface water samples taken in the central cities of urbanized territories (Irkutsk, Ulan-Ude and Ulan-Bator), as well as in adjacent territories were analyzed for the content of macro-and microelements. It was revealed that the most contaminated soils are in the city of Irkutsk due to the presence of a large technogenic load and high sorption capacity of soils. Soil degradation and pollution in the Baikal region has been mapped. The map shows actual pollution and possible potential, taking into account environmental conditions. The highest pollution of surface waters is observed in the Tuul river, downstream of Ulan-Bator due to the high technogenic load and the fact that natural waters of steppe regions initially have high content of chemical elements, and the soils are fine textured, therefore, pollutants can easily migrate through surface and ground waters. A map of surface water quality of the Baikal natural territory has been compiled.
Differentiation of dependency ratio in Irkutsk oblast
Authors: Dmitrieva Yu N 
Published: January 2021

Abstract
The article determines the dependency ratio among municipalities of Irkutsk oblast. We designed scales with ratio gradation for mapping the results for different types of dependency burdens. We revealed that the youth population less than 400 per 1,000 people is typical for northern peripheral districts of the region and for the well-developed industrial and multifunctional central cities. The connection between the long-term mean birthrate within the main settlement zone in the region and mean indices of youth dependency burden from 400 to 600 is determined. Minimal old dependency burden (less than 400) have been revealed in the regional center Irkutsk and the Irkutsk district with higher working-age population, in most other districts the old dependency burden has mean values 400 to 500 per 1,000. Maximal value of the old dependency ratio is typical for the north of the region and they are determined by migration outflow, low birthrate and aging population. We have summarized the values of youth dependency ratio and the old dependency ratio and revealed a significant differentiation of indicators of the total dependency load in the region within the values up to 800 and more than 1,000. The northern regions with a considerate proportion of pensioners in the total population and the regions of the main settlement zone with mean values of both ratios and the regions of Ust’-Orda Buryat okrug with traditionally high birthrates experience the greatest dependency load on the workforce.