• 제목/요약/키워드: Uzbekistan

검색결과 165건 처리시간 0.026초

Algorithm of solving the problem of small elastoplastic deformation of fiber composites by FEM

  • Polatov, Askhad M.;Khaldjigitov, Abduvali A.;Ikramov, Akhmat M.
    • Advances in Computational Design
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    • 제5권3호
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    • pp.305-321
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    • 2020
  • In this paper is presented the solution method for three-dimensional problem of transversely isotropic body's elastoplastic deformation by the finite element method (FEM). The process of problem solution consists of: determining the effective parameters of a transversely isotropic medium; construction of the finite element mesh of the body configuration, including the determination of the local minimum value of the tape width of non-zero coefficients of equation systems by using of front method; constructing of the stiffness matrix coefficients and load vector node components of the equation for an individual finite element's state according to the theory of small elastoplastic deformations for a transversely isotropic medium; the formation of a resolving symmetric-tape system of equations by summing of all state equations coefficients summing of all finite elements; solution of the system of symmetric-tape equations systems by means of the square root method; calculation of the body's elastoplastic stress-strain state by performing the iterative process of the initial stress method. For each problem solution stage, effective computational algorithms have been developed that reduce computational operations number by modifying existing solution methods and taking into account the matrix coefficients structure. As an example it is given, the problem solution of fibrous composite straining in the form of a rectangle with a system of circular holes.

Primary Renal Hydatid Cyst: Mis-Interpretation as a Renal Malignancy

  • Choi, Hoon;Park, Jae Young;Kim, Jae-Heon;Moon, Du Geon;Lee, Jeong-Gu;Bae, Jae Hyun
    • Parasites, Hosts and Diseases
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    • 제52권3호
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    • pp.295-298
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    • 2014
  • Primary renal echinococcosis, a rare disease involving the kidney, accounts for 2-3% of human echinococcosis. A 64-year-old female patient from Uzbekistan presented with complaints of left flank pain. A CT scan revealed a cystic mass in the upper to midpole of the left kidney. We regarded this lesion as a renal malignancy and hand-assisted laparoscopic radical nephrectomy was performed to remove the renal mass. The mass consisted of a large unilocular cyst and multiple smaller cysts without any grossly visible renal tissue. The final pathologic diagnosis was a renal hydatid cyst. For patients from endemic areas, hydatid cyst should be included in the differential diagnosis. Here, we present a case of renal hydatid cyst in a female patient who relocated from Uzbekistan to Korea.

A Study on Life Cycle Cost on Railway Locomotive Systems

  • Egamberdiev, Bunyod;Lee, Kookchan;Lee, Jongwoo;Burnashev, Shamil
    • International Journal of Railway
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    • 제9권1호
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    • pp.10-14
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    • 2016
  • Life cycle cost analysis is compulsively required for the system operation. System operation costs are consisted of acquisition, operation, maintenance and so on. In the beginning of the system planning, we need to take into account of various costs following the system operating. To implement LCC, we need to analyze system life cycle to identify all costs during system life. The costs can be divided into three parts. The first part is purchasing cost, the second for operating cost and the last for disposal cost. The second operating cost can be decomposed of operating cost included labor, energy consumption cost for system running, maintenance costs to keep systems healthy, delay cost caused from maintenance and hazard cost, and so on. In this paper, we carried out for railway locomotives which operate over more 30years and which cost about 10 million USD. We decompose the life cycle of the locomotives and break down the locomotives into subsystems to require maintenance or not, and subsystems to need energy or not. We showed how to decide optimal locomotives through cost identification and system breakdown.

Observation of transiting exoplanet TrES-2b at Maidanak Observatory in Uzbekistan

  • 양윤아;이상각;강원석
    • 천문학회보
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    • 제36권1호
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    • pp.28.1-28.1
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    • 2011
  • We observed the transiting exoplanet, TrES-2b, with 1.5m telescope at Maidanak Observatory in Uzbekistan. We observed TrES-2 system for six nights, which contained two orbital periods of the planet. Therefore, we obtained the entire light curve of TrES-2b, which covered not only the whole primary transit containing both ingress and egress part, but also non-transit region. We used both R and Y band filters. Especially, Y filter is used first for transit observation and covers relatively longer wavelength ($1.02{\mu}m$ of center wavelength), to provide the light curve less affected by limb darkening. By fitting best model light curve for the obtained one, we determined these observables, transit depth, transit length, and planet's orbital period, which led to the determination of five physical parameters, stellar radius R*, stellar mass M*, inclination i, semi-major axis a, and planetary radius Rp. We will discuss of these results.

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우즈베키스탄 유학생들의 의복 구매행동에 관한 연구(II) -패션 라이프스타일을 중심으로- (A Study on Clothing Purchasing Behavior of the Uzbekistan Students Staying in Korea(II): Focus on the Fashion Lifestyle)

  • 이옥희
    • 패션비즈니스
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    • 제23권5호
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    • pp.67-80
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    • 2019
  • This study analyzed the factors determining fashion lifestyle of Uzbek students in Korea and their clothing purchasing behavior and attitudes towards Hallyu, the Korean image, satisfaction, preferences and purchasing intentions for Korean fashion according to fashion lifestyle. The data collected from 260 Uzbekistan students in Korea were subjected to factor analysis, cluster analysis, ANOVA, Duncan test, and ${\chi}^2$-test using SPSS 25.0. The results were as follows: 1) Fashion lifestyle was analyzed based on brand orientation, tradition, fashion, and personality. The fashion lifestyle group was classified as follows: brand, fashion/personality, traditional, and fashion passive. 2) The evaluation criteria for fashion products, information sources, and store selection criteria were varied among the four groups of fashion lifestyle. 3) The attitude toward Hallyu and Korean image, the satisfaction, preference, and purchasing intention of KFP varied significantly between the fashion lifestyle groups. 4) The demographics of fashion lifestyle groups showed significant differences in sex and residential status. These results can be used as a basis for fashion companies targeting markets for Uzbek people in their 20s.

Comparative Study of Health Care System in Three Central Asian Countries: Kazakhstan, Kyrgyzstan, Uzbekistan

  • Dronina, Yuliya;Nam, Eun Woo
    • 보건행정학회지
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    • 제29권3호
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    • pp.342-356
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    • 2019
  • Background: The objectives of the study are to find out the effect of the implementing reform in three Central Asian countries, identify its impact on health status and health care delivery systems. This study address to identify strong and weak points of the health systems and provide a recommendation for further health care organization. Methods: A comparative analysis was conducted to evaluate the effects of implemented policy on health care system efficiency and equity. Secondary data were collected on selected health indicators using information from the World Health Organization Global Health Expenditure Database, European Health Information Platform, and World Bank Open Data. Results: In terms of population status, countries achieved relatively good results. Infant mortality and under-5 mortality rate decreased in all countries; also, life expectancy increased, and it was more than 70 years. Regulations of the health systems are still highly centralized, and the Ministry of Health is the main organ responsible for national health policy developing and implementation. Among the three countries, only Kyrgyzstan was successful in introducing a national health system. Distribution of health expenditure between public expenditure and out-of-pocket payments was decreased, and out-of-pocket payments were less the 50% of total health expenditure in all countries, in 2014. Conclusion: After independent, all three countries implemented a certain number of the policy reform, mostly it was directed to move away from the old the Soviet system. Subsequent reform should be focused on evidence-based decision making and strengthening of primary health care in terms of new public health concepts.

The Legacy Goes on: Ethnobotanical Knowledge of Uzbekistan Koryoin (ethnic Koreans)

  • Aleksey L. Kim;Hyeon Jin Jeong;Ju Eun Jang;Hyeok Jae Choi;Chang-Gee Jang;Hee-Young Gil
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2022년도 추계학술대회
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    • pp.48-48
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    • 2022
  • Ethnobotany is an interdisciplinary science at the intersection of botany and ethnology. Currently, there is a sharply increasing need for the study and conservation of traditional knowledge about plants. The loss of traditional sources, knowledge, and practices in using plants is caused by the growth of technologies in all branches of production, widespread urbanization, and globalization of the economy. This study was been conducted to collect and analyze the Koryoins (Koryo saram) traditional ethnobotanical knowledge, living in Uzbekistan, whose number 174,200 people. They are the descendants of Korean immigrants to the Russian Far East, who ended up in Central Asia as a result of the forced resettlement in 1937. In the processing of collected data, four main categories of uses were defined - Alimentary, Medicinal, Household/Handicraft, and Others. For quantitative data analysis, synthetic indices were used - RFC (Relative Frequency of Citation) and CI (Cultural Importance Index), which are commonly applied to assess the importance of plants. The respondents mentioned 72 plants belonging to 28 botanical families. A significant part of them was cultivar plants. The category that had the largest number of plants mentioned by the respondents was the Alimentary use category (51). According to quantitative indices rates, the most important plants are traditionally used for food. A comparison of ethnobotanical knowledge was made with the collected data of this study and Korean traditional knowledge.

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우즈베키스탄 악토시티 금광화대 자원량 평가 (Resource Estimation of Actosity Gold Mineralized Belt, Uzbekistan)

  • 지세정;박성원;김인준;허철호
    • 자원환경지질
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    • 제47권2호
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    • pp.169-180
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    • 2014
  • 우즈베키스탄 중북부의 나오이주(州)에 소재하는 구즉타우 금(Au) 광화대 내의 악토시티광구($0.96km^2$)에 대한 신규 광체 확보를 위해 지표 지질 광상 조사, 트렌치탐사 및 시추탐사(총 1,100 m, 9개 시추공)를 수행하였다. 새로운 광체들이 지표 노두에서 확인되었으며, 함-금 광체들은 판상 혹은 렌즈상으로 발달되었고, $N40{\sim}70^{\circ}\;W$ 방향으로 50~120 m 정도 단속적으로 연장되며, $70{\sim}90^{\circ}$로 SW 혹은 NE 방향으로 경사져 있다. 광체 폭의 범위는 0.5~35 m 로써 심한 변화를 하고 있다. 2011-2012년에 9개 시추공 1,100 m에 대한 시추탐사 결과 대부분의 시추공에서 광체를 착맥하였으며, 금의 품위는 0.25~3.52 mg/kg 이고, 추정 자원량 2,382톤이 신규로 확보되었으며, 금의 금속량으로는 2.5톤에 해당된다. 현재까지 확보된 악토시티 광구에 대한 자원량과 금의 품위로는 개발 경제성이 낮은 것으로 판단되나 향후 추가 정밀 탐사의 추진으로 금의 자원량 확보가 가능하고, 최소 중규모의 광상으로 경제적 가치가 상승할 것으로 기대된다.

ON AN EQUATION CONNECTED WITH THE THEORY FOR SPREADING OF ACOUSTIC WAVE

  • Zikirov, O.S.
    • East Asian mathematical journal
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    • 제27권1호
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    • pp.51-65
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    • 2011
  • In the paper, we study questions on classical solvability of nonlocal problems for a third-order linear hyperbolic equation in a rectangular domain. The Riemann method is applied to the Goursat problem and solution is obtained in the integral form. Investigated problems are reduced to the uniquely solvable Volterra-type equation of second kind. Influence effects of coefficients at lowest derivatives on correctness of studied problems are detected.