• Title/Summary/Keyword: Siberian

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Prospects for the use of Multiphase Inverter-fed Asynchronous Drives in the Field of Traction Systems of Railway Vehicles

  • Brazhnikov, Andrey V.;Belozerov, Ilya R.
    • International Journal of Railway
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    • v.5 no.1
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    • pp.38-47
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    • 2012
  • At present among the most important problems in the field of traction systems of railway vehicles are the following: 1) the minimization of the mass-and-overall dimensions of the drive systems; 2) the increase of the drive systems reliability and obtaining their higher fault-tolerance abilities; 3) the minimization of the motion speed pulsations and its oscillations, etc. The results of the researches received by the authors of this paper show that the use of the multiphase (i.e. having the number of phases more than four) inverter-fed induction motors in these traction systems is the most effective way of solving the above mentioned problems. In this case the motion speed oscillations can be decreased only by the increase of the drive phase number without any change in the inverter control algorithm. In addition, the application of some non-traditional control methods in the multiphase asynchronous traction drive system of a railway vehicle allows to decrease the mass-and-overall dimensions of the system and to improve its reliability and some other technical-and economic characteristics.

Melanoma Incidence Mortality Rates and Clinico-Pathological Types in the Siberian Area of the Russian Federation

  • Gyrylova, Svetlana Nikolaevna;Aksenenko, Mariya Borisovna;Gavrilyuk, Dmitriy Vladimirovich;Palkina, Nadezda Vladimirovna;Dyhno, Yuriy Alexandrovich;Ruksha, Tatiana Gennadievna;Artyukhov, Ivan Pavlovich
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.5
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    • pp.2201-2204
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    • 2014
  • Russian rates for melanoma incidence and mortality are relatively low as compared to some other white populations but the tumor is of increasing importance. In this paper, data are based on a retrospective descriptive analysis of melanoma epidemiology and clinicopathological characteristics in Krasnoyarsk Territory belonging to the Siberian Federal District of the Russian Federation. The age-adjusted incidence and mortality rates for the period 1996-2009 were determined with subsequent retrospective analysis of clinicopathological data of 103 primary melanoma cases. Our results showed that incidence and mortality rates in the region under consideration match the Russian national trends and correspond to epidemiological data of the countries of Eastern Europe. Stratification of melanoma cases by age, sex, clinicopathological state and localization revealed a prevalence of lesions on the trunk and lower extremities. Most melanomas diagnosed were of superficial spreading type and the third Clark's level of tumor invasion and stage II according to AJCC. In spite of comparatively low rates of incidence and mortality the trend to increase of melanoma cases in the region under consideration obviously calls for more attention and further investigation.

Competitiveness Analysis of TSR(Trans Siberian Railway) (시베리아횡단철도의 경쟁력 분석에 관한 연구)

  • Nam, Ki-Chan;Yoo, Ju-Young;Kim, Tae-Won
    • Journal of Navigation and Port Research
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    • v.31 no.5 s.121
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    • pp.395-401
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    • 2007
  • Recently, the government of Russia has been cooperating with developed countries such as Germany, which have an advanced railroad system. They have been establishing a strategy to activate the Siberia Trans Railway. Thus, it is possible that a part of cargo will be transported by TSR (Trans Siberia Railway) instead of shipping. If there is a railroad system, connecting the North and the South Korea via the Busan port, a new freight route linking to Europe will be reached. This paper aim to investigate the intention of shipping companies, shipper, forwarders, who are prospective customers and/or competitors of TSR. An analysis of the competitiveness between TSR system and the waterway transportation will be also mentioned.

Verification of drag-reduction capabilities of stiff compliant coatings in air flow at moderate speeds

  • Boiko, Andrey V.;Kulik, Victor M.;Chun, Ho-Hwan;Lee, In-Won
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.3 no.4
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    • pp.242-253
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    • 2011
  • Skin frictional drag reduction efficiency of "stiff" compliant coating was investigated in a wind tunnel experiment. Flat plate compliant coating inserts were installed in a wind tunnel and the measurements of skin frictional drag and velocity field were carried out. The compliant coatings with varying viscoelastic properties had been prepared using different composition. In order to optimize the coating thickness, the most important design parameter, the dynamic viscoelastic properties had been determined experimentally. The aging of the materials (variation of their properties) during half a year was documented as well. A design procedure proposed by Kulik et al. (2008) was applied to get an optimal value for the coating thickness. Along with the drag measurement using the strain balance, velocity and pressure were measured for different coatings. The compliant coatings with the thickness h = 7mm achieved 4~5% drag reduction within a velocity range 30~40 m/s. The drag reduction mechanism of the attenuation of turbulence velocity fluctuations due to the compliant coating was demonstrated. It is envisioned that larger drag reduction effect is obtainable at higher flow velocities for high speed trains and subsonic aircrafts.

A Phylogenetic Study of Korean Rodents (Muridae, Sciuridae) Based on Mitochondrial and Nuclear DNA

  • Jung, Gi-La;Lee, Seo-Jin;Kim, Chuel-Kyu;Lee, Hang;Kim, Chang-Bae
    • Animal Systematics, Evolution and Diversity
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    • v.26 no.2
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    • pp.99-104
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    • 2010
  • The subfamily Murinae is a very controversial group concerning their phylogenetic relationship. Previous studies could not resolve phylogeny among four genera Apodemus, Micromys, Mus and Rattus of the Muridae. In the present study, eight rodent species resident in South Korea were collected and phylogenetically analyzed based on sequence data of five mitochondrial and nuclear DNA regions: 12S rRNA, cytochrome b gene (cyt b), cytochrome oxidase II (COII), control region of mitochondrial DNA, and a thyroglobulin (Tg) of nuclear DNA. According to the phylogeny of the concatenated data, M. musculus separated early in Murinae (ML 100%; BA 1.00 pp) and the genus Rattus grouped with the harvest mouse, M. minutes; these were separated from the genus Apodemus with relatively strong support (ML 74%; BA 0.76 pp). The Siberian chipmunk population was also examined using the five genes to obtain better resolution. The phylogeny for Korean rodents determined using the 12S rRNA, cyt b, COII and control regions discriminated the Siberian chipmunk populations from Korea, Russia, and China.

Surgical Reconstruction of the Severe Tongue Laceration with Mandibular Fracture in a Siberian Husky Dog

  • Lee, Jae-Hoon;Kim, Tae-Hoon;Yang, Wo-Jong;Kang, Eun-Hee;Chang, Hwa-Seok;Chung, Dai-Jung;Choi, Chi-Bong;Lee, Jeong-Ik;Kim, Hwi-Yool
    • Journal of Veterinary Clinics
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    • v.25 no.6
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    • pp.545-548
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    • 2008
  • A 3-year-old castrated male Siberian husky was presented for evaluation after being hit by a car. On physical examination, the dog showed open-mouth, displacement of mandible and hypersalivation with blood ting. The base of tongue was transected almost 80% on the bias from right dorsal side to the left ventral side. Radiography demonstrated separation of mandible symphysis, and fracture of right condyle and vertical ramus. After debridement of the necrotic tissue, tongue apposition with simple interrupted suture was performed. Mandibular symphysis, condyle and mandibular vertical ramus fractures were fixed using pin, cerclage wire, T-plate, and K-wires. The mouth was irrigated daily using chlorhexidine after surgery. The sutures that were loose here or untied at tongue were re-sutured under sedation. The transected tongue was healed and recovered its normal movement after 6 weeks.

Analysis of Library Website Users' Behavior to Optimize Virtual Information and Library Services

  • Shevchenko, Lyudmila
    • Journal of Information Science Theory and Practice
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    • v.8 no.1
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    • pp.45-55
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    • 2020
  • The purpose of this work was to study library website users' actions by tracking their behavior, determining popular content, and identifying browsing patterns and subsequent improvement of access to popular content. The study of behavior models and the use of web analytics has led to the emergence of solutions that improve the usability and functionality of the State Public Scientific-Technological Library of the Siberian Branch of the Russian Academy of Sciences (SPSTL SB RAS) website. These are: identifying user tasks as they are developed, conducting user testing to better understand the event. tracking data and collecting additional data to verify the effectiveness of the changes made. Examining data on the duration of the session and the number of visits will help determine the goals of user visits and develop new recommendations. Usability analysis and testing will make it possible to compare the data obtained using web analytics and the perception of the library site by the users themselves. Recommendations are offered to libraries on the use of data on the real behavior of the target audience of the library website to improve access to library resources and services, increase their relevance and improve information services.

The literature of Catherine II and the image of freemason in the late 18th century Russia: the case of anti-freemason trilogy from Catherine II (예카테리나 2세의 문학과 18세기 후반 러시아 프리메이슨의 형상: 예카테리나 2세의 '안티-프리메이슨 삼부작'을 중심으로)

  • Seo, Kwang jin
    • Cross-Cultural Studies
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    • v.37
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    • pp.131-156
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    • 2014
  • This article attempts to explore the literature of Catherine the second, focusing on her comedies in the light of anti-freemasonry in the late 18th-centuryof Russia. Her main idea towards social morals was consistently expressed from in her early comedies during 1770s, such as 'Oh! times!'(1772), to her late counterparts during 1880s, such as so called 'anti-freemason trilogy,' which includes 'the deceiver'(1785), 'the deceived one'(1785) and 'Siberian shaman'(1786). By depicting antagonists-freemasons in her own trilogy, only as alchemists, shamans, fallacious chemists, hypocritical medical doctors, and so on, Caterine the second intended to undermine the mason influence against Russian Empire, which had ideationally attracted Russian nobles and intellectuals and furthermore to reinforce her political control over the intellectuals as well as the public. The above literacy attempts by Catherine can be said to aim to found morals of her own era through the utilization of social discourse, rather than through the political or governmental control.

First detection of a G1-like H9N2 virus in Russia, 2018

  • Sharshov, Kirill;Kurskaya, Olga;Sobolev, Ivan;Leonov, Sergey;Kabilov, Marsel;Tatyana, Alikina;Alekseev, Alexander;Derko, Anastasiya;Yushkov, Yuriy;Saito, Takehiko;Uchida, Yuko;Mine, Junki;Irza, Victor;Shestopalov, Alexander
    • Korean Journal of Veterinary Research
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    • v.59 no.1
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    • pp.37-42
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    • 2019
  • Worldwide, avian influenza H9N2 viruses of different lineages are the most widespread viruses in poultry. However, to date, cases in Russia have not been documented. In this study, we report the first detection of a G1-like H9N2 virus from poultry sampled at live-bird markets in Russia (Far East region) during the winter of 2018 (isolate A/chicken/Amur_Russia/17/2018). We assume there has been further circulation of the A/chicken/Amur_Russia/17/2018 H9N2 virus in the Russian Far East with possible distribution to other regions or countries in 2018-2019.

The Features of Restricted Access to Information at European and East Asian Libraries

  • Makhotina, Natalya;Pshenichnaya, Evgeniya
    • Journal of Information Science Theory and Practice
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    • v.9 no.3
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    • pp.31-41
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    • 2021
  • The growing number of threats to society through the uncontrolled distribution of information is forcing library communities in many countries to reconsider their views on free access to collections. Based on the content of numerous documents of international importance, it can be concluded that in any democratic country access to information is one of the most important human rights, along with the right to life, liberty, and security of person. However, the state has the right to restrict citizens' access to information within the framework of existing legislation. Constantly, restrictions on access to information are established in order to protect the ethical foundations of the constitutional order, morality, health, rights, and legitimate interests of others, to ensure the country's defense and state security. It goes without saying that each country has the right to independently decide where the boundaries lie between permitted and prohibited information, including printed information, contained in library collections. This article describes three levels of access restriction: foreign, state, and regional. The authors have analyzed the legal and regulatory documents that govern libraries, as well as the reasons and methods of limitation. A comparative analysis of the restriction of access to information in the countries of Europe and Asia is presented.