• Title/Summary/Keyword: Samarkand

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Utilization of Some Industrial Wastes for Producing of Polymeric Composite Materials

  • Hojieva, Alohida;Rustamov, Abduvali;Ahmedov, Akmal
    • Proceedings of the Korean Environmental Sciences Society Conference
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    • 2003.11a
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    • pp.95-98
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    • 2003
  • Polymeric composite materials on the basis of some industrial wastes are obtained. Some physical parameters of experimental samples are determined. The analysis of exploitative properties of these polymer composite materials allows recommending them as a heat-insulating material in constructions.

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Prevalence of Intestinal Helminth Infections in Dogs and Two Species of Wild Animals from Samarkand Region of Uzbekistan

  • Yong, Tai-Soon;Lee, Kyu-Jae;Shin, Myeong Heon;Yu, Hak Sun;Suvonkulov, Uktamjon;Sergeevich, Turycin Bladimir;Shamsiev, Azamat;Park, Gab-Man
    • Parasites, Hosts and Diseases
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    • v.57 no.5
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    • pp.549-552
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    • 2019
  • This study aimed to determine the prevalence of intestinal helminth parasitic infections and associated risk factors for the human infection among the people of Samarkand, Uzbekistan. Infection status of helminths including Echinococcus granulosus was surveyed in domestic and wild animals from 4 sites in the Samarkand region, Uzbekistan during 2015-2018. Fecal samples of each animal were examined with the formalin-ether sedimentation technique and the recovery of intestinal helminths was performed with naked eyes and a stereomicroscope in total 1,761 animals (1,755 dogs, 1 golden jackal, and 5 Corsac foxes). Total 658 adult worms of E. granulosus were detected in 28 (1.6%) dogs and 1 (100%) golden jackal. More than 6 species of helminths, i.e., Taenia hydatigena, Dipylidium caninum, Diplopylidium nolleri, Mesocestoides lineatus, Toxocara canis, and Trichuris vulpis, were found from 18 (1.0%) dogs. Six (T. hydatigena, Toxascaris leonina, Alaria alata, Uncinaria stenocephala, D. caninum, and M. lineatus) and 2 (D. nolleri and M. lineatus) species of helminths were also detected from 5 Corsac foxes and 1 golden jackal, respectively. Taeniid eggs were found in 2 (20%) out of 10 soil samples. In the present study, it was confirmed that the prevalences of helminths including E. granulosus are not so high in domestic and wild animals. Nevertheless, the awareness on the zoonotic helminth infections should be continuously maintained in Uzbekistan for the prevention of human infection.

Central Asia and the Republic of Korea: A Sketch on Historical Relations

  • ABDUKHALIMOV, BAKHROM;KARIMOVA, NATALIA
    • Acta Via Serica
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    • v.4 no.2
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    • pp.119-128
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    • 2019
  • This paper attempts to reveal little-known pages from the history of relations between the peoples of Central Asia and Korea based on materials derived from written sources and modern scientific literature, as well as from medieval wall paintings from the early medieval Afrasiab Palace of Varhuman, the ruler of Samarkand, and from stone sculptures of Sogdian figures contained in Silla royal tombs. Korea's interest in the western lands led to its contact with Buddhism, which spread and later flourished in all three Korean kingdoms (Koguryo, Paekche and Silla). The spread of Buddhism in turn motivated a number of Korean monks to undertake pilgrimages to India via Central Asia. Hyecho, a young Silla pilgrim, left evidence of his journey via the South China Sea to India in 723 AD. Paul Pelliot discovered a report from Hyecho's journey entitled Notes on Pilgrimage to Five Regions in India (Wang Wu Tianzhuguo zhuan) in the Dunhuang caves in 1908. Hyecho's contributions are worthy of attention, substantially complementing knowledge available for this little-studied period in the history of South and Central Asia. The information contained in Hyecho's manuscript is, in fact, considered the most significant work of the first half of the 8th century. Research regarding the relationship between Central Asia and Korea remains underdeveloped. Existing historical evidence, however, including the above mentioned Samarkand wall paintings, depicts the visits of two Korean ambassadors to Samarkand, and evidence from Silla tombs suggests the presence of diplomatic relations in addition to trade between the two regions. Overall, the history of the relationship between Central Asia and Korea yields new insights into how and why these distant countries sustained trade and diplomatic and cultural exchange during this early period. Taking into account Korea's growing interest in Uzbekistan, especially in its history and culture, this article can act as a catalyst for studying the history of the two country's relations.

A Study on the Dress of the Period of the Three States From the Wall Painting of Afrasiab's Palace in Samarkand (사마르칸트 아프라시압궁전 벽화에 나타난 삼국시대복식연구)

  • Lee, Sang-Eun;Kim, Ae-Ryeon
    • Journal of the Korea Fashion and Costume Design Association
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    • v.8 no.2
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    • pp.183-199
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    • 2006
  • This study aims to estimate the nationality of two envoys by examining their dresses and appearances depicted on the wall painting of Afrasiab's Palace in Samarkand with the concentration on the history of the international exchange between three states and the countries in Central Asia. The international exchange between three states and the countries in Central Asia are examined with the concentration on the literature review. And what are related to the dresses during the period of the three states are examined with the concentration on the literature review and the wall painting of Goguryeo tomb. The followings results were identified. The dresses of envoys were comprised of Jowugwan, the soft hat shaped like a peaked hat, the upper garment reaching a hip line with Jikryeong Gyoim and Tongsu, narrow trousers, black belt with a hook, front-pointed shoes and big sword with a round ring. The items of dressing are very similar to those during the Goguryeo period as observed on the wall paintings and excavated articles from the tombs from the Goguryeo period and literature. The next examination is estimated that Goguryeo had the official relationship with the countries in Central Asia before the invasion of Tang in mid-7 century when the wall painting, in our estimation, was produced, and to this end, Goguryeo sent the envoys to those countries. The envoys on the wall painting were estimated to be from Goguryeo as discussed above.

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On a Model of Forming the Optimal Parameters of the Recognition Algorithms

  • Hudayberdiev, Mirzaakbar Kh.;Akhatov, Akmal R.;Hamroev, Alisher Sh.
    • Journal of information and communication convergence engineering
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    • v.9 no.5
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    • pp.607-609
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    • 2011
  • In this work, we present solutions of two problems. First, the representation of pattern recognition problem in the standard $T_{nml}$ table of the algorithm estimate calculation was considered. Second, the problem of finding the model, consisting of the optimal parameters of an algorithm was considered. Such procedure is carried out by the selection optimal values of the parameters of extreme algorithms. This serves to reduce the number of calculations in the algorithms of estimate calculation and to increase the quality of recognition process. The algorithmic data base of the developed system was based on mathematical apparatus of pattern recognition.

Triangle Method for Fast Face Detection on the Wild

  • Malikovich, Karimov Madjit;Akhmatovich, Tashev Komil;ugli, Islomov Shahboz Zokir;Nizomovich, Mavlonov Obid
    • Journal of Multimedia Information System
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    • v.5 no.1
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    • pp.15-20
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    • 2018
  • There are a lot of problems in the face detection area. One of them is detecting faces by facial features and reducing number of the false negatives and positions. This paper is directed to solve this problem by the proposed triangle method. Also, this paper explans cascades, Haar-like features, AdaBoost, HOG. We propose a scheme using 12-net, 24-net, 48-net to scan images and improve efficiency. Using triangle method for frontal pose, B and B1 methods for other poses in neural networks are proposed.

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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    • v.5 no.3
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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.

Infection Status of Hydatid Cysts in Humans and Sheep in Uzbekistan

  • Hong, Sung-Tae;Jin, Yan;Anvarov, Khikmat;Khadjibaev, Abdukhakim;Hong, Samin;Ahmedov, Yusufjon;Otaboev, Utkir
    • Parasites, Hosts and Diseases
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    • v.51 no.3
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    • pp.383-385
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    • 2013
  • Uzbekistan is endemic of cystic echinococcosis (CE). In order to estimate endemicity of CE, we collected data from emergency surgery due to CE in 2002-2010 and also investigated the prevalence of hydatid cysts in the liver and lungs of sheep at an abattoir in Uzbekistan from July 2009 to June 2010. In 14 emergency hospitals, 8,014 patients received surgical removal or drainage of CE during 2002-2010, and 2,966 patients were found in 2010. A total of 22,959 sheep were grossly examined of their liver and lungs, and 479 (2.1%) and 340 (1.5%) of them were positive for the cyst in the liver and lungs, respectively. Echinococcus granulosus is actively transmitted both to humans and sheep, and CE is a zoonotic disease of public health priority in Uzbekistan.

Rmap+: Autonomous Path Planning for Exploration of Mobile Robot Based on Inner Pair of Outer Frontiers

  • Buriboev, Abror;Kang, Hyun Kyu;Lee, Jun Dong;Oh, Ryumduck;Jeon, Heung Seok
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.16 no.10
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    • pp.3373-3389
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    • 2022
  • Exploration of mobile robot without prior data about environments is a fundamental problem during the SLAM processes. In this work, we propose improved version of previous Rmap algorithm by modifying its Exploration submodule. Despite the previous Rmap's performance which significantly reduces the overhead of the grid map, its exploration module costs a lot because of its rectangle following algorithm. To prevent that, we propose a new Rmap+ algorithm for autonomous path planning of mobile robot to explore an unknown environment. The algorithm bases on paired frontiers. To navigate and extend an exploration area of mobile robot, the Rmap+ utilizes the inner and outer frontiers. In each exploration round, the mobile robot using the sensor range determines the frontiers. Then robot periodically changes the range of sensor and generates inner pairs of frontiers. After calculating the length of each frontiers' and its corresponding pairs, the Rmap+ selects the goal point to navigate the robot. The experimental results represent efficiency and applicability on exploration time and distance, i.e., to complete the whole exploration, the path distance decreased from 15% to 69%, as well as the robot decreased the time consumption from 12% to 86% than previous algorithms.