• Title/Summary/Keyword: Mimic

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Diagnosis of neonatal seizures (신생아 경련의 진단)

  • Chung, Hee Jung;Hur, Yun Jung
    • Clinical and Experimental Pediatrics
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    • v.52 no.9
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    • pp.964-970
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    • 2009
  • Neonatal seizures are generally not only brief and subtle but also not easily recognized and are usually untreated. In sick neonates, seizures are frequently not manifested clinically but are detected only by electroencephalography (subclinical EEG seizures). This phenomenon of electroclinical dissociation is fairly common in neonates. On the other hand, neonates frequently show clinical behaviors such as stiffening, apnea, or autonomic manifestations that mimic seizures, which is usually associated with underlying encephalopathy and non-epileptic seizures. Therefore, it might be difficult to confirm the diagnosis of neonatal seizures. Early recognition of neonatal seizures is important to minimize poor neurodevelopmental outcomes, including cognitive, behavioral, and learning disabilities, as well as the development of postnatal epilepsy. EEG is a reliable tool in the determination of neonatal seizures. Continuous EEG monitoring is essential for the identification of seizures, evaluation of treatment efficacy, and prediction of the neurodevelopmental outcome. However, there is not yet a wide consensus on the optimal "standard" lead montage for the continuous EEG monitoring.

Resource Allocation Algorithm for Differentiated Multimedia Services Using Came Theory (게임이론을 이용한 멀티미디어 서비스의 차별적 자원 할당 알고리즘)

  • Shin, Kwang-Sup;Jung, Jae-Yoon;Suh, Doug-Young;Kang, Suk-Ho
    • Journal of the Korean Operations Research and Management Science Society
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    • v.34 no.1
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    • pp.39-59
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    • 2009
  • Game theory is adapted to a variety of domains such as economics, biology, engineering, political science, computer science, and philosophy in order to analyze economic behaviors. This research is an application of game theory to wireless communication. In particular, in terms of bargaining game we dealt with a multimedia resource allocation problem in wireless communication, which is rapidly spreading such as Wibro, WCDML, IPTV, etc. The algorithm is assumed to allocate multimedia resources to users who can choose and access differentiated media services. For this purpose, 3 utility function of users is devised to reflect quality of service (QoS) and price. We illustrated experimental results with synthesis data which were made to mimic real multimedia data, and analyzed differentiated service providing and the effect of the utility function.

Estrogenic Activity Assessment of Alkylphenolic chemicals using in vitro assays : III. Rcombinant Yeast Transcriptional Assay

  • Park, Hyo-Joung;Lee, Ho-Ja;Park, Kyunghee;Ryu, Jae-Chun
    • Proceedings of the Korea Society of Environmental Toocicology Conference
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    • 2001.05a
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    • pp.127-127
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    • 2001
  • There is a concern that chemicals in our environment are affecting human health by disrupting a normal endocrine function. Much of the concern has focused on chemicals that can interact directly with steroid hormone receptors. The ability of certain man-made chemicals to mimic the effects of natural steroid hormones and their potential to disrupt the delicate balance of the endocrine system in animals are of increasing concern. (omitted)

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Finite Element-Based Fatigue Assessment of Engine Connecting-Rod Bolts (엔진 커넥팅 로드 볼트의 유한요소 피로 평가)

  • Cho, Sung-San;Chang, Hoon;Lee, Kyung-Woo
    • Transactions of the Korean Society of Automotive Engineers
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    • v.16 no.4
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    • pp.14-20
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    • 2008
  • Fatigue fracture of engine connecting-rod bolts is encountered frequently during the developement of high-speed engines. Only the engine dyno test is a currently reliable fatigue durability assessment method. It is because the available rig tests cannot mimic the engine running condition completely, and because the finite element analysis cannot provide realistic stresses near the bolt thread that is modeled as a cylinder. This paper introduces a methodology to assess the fatigue durability of the connecting-rod bolts using the finite element analysis. The methods to contruct the bolt model, to extract the critical bolt stresses for the fatigue analysis, and to obtain the bolt fatigue endurance limit experimentally are discussed. Reliability of the method is verified indirectly.

Resource Allocation Algorithm for Differentiated Multimedia Services using Game Theory (게임이론을 이용한 멀티미디어 서비스의 차별적 자원 할당 알고리즘)

  • Sin, Gwang-Seop;Jeong, Jae-Yun;Seo, Deok-Yeong;Gang, Seok-Ho
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2008.10a
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    • pp.164-178
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    • 2008
  • Game theory is adapted to a variety of domains such as economics, biology, engineering, political science, computer science, and philosophy in order to analyze economic behaviors. This research is an application of game theory to wireless communication. In particular, in terms of bargaining game we dealt with a multimedia resource allocation algorithm in wireless communication, which is rapidly spreading such as Wibro, WCDML, IPTV, etc. The algorithm is assumed to allocate multimedia resources to users who can choose and access differentiated media services. For this purpose, a utility function of users is devised to reflect quality of service (QoS) and price. We illustrated experimental results with synthesis data which were made to mimic real multimedia data, and analyzed differentiated service providing and the effect of the utility function.

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Dural Marginal Zone Lymphoma Confused with Meningioma en Plaque

  • Kim, Min-Young;Kim, Seong-Min;Chung, Seung-Young;Park, Moon-Sun
    • Journal of Korean Neurosurgical Society
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    • v.42 no.3
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    • pp.220-223
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    • 2007
  • We report a case of dural marginal zone lymphoma which showed the usual radiological findings resembling meningioma. A 59-year-old woman presented with headache. Initial computed tomography and magnetic resonance images showed a frontal convexity meningioma. The patient underwent a craniotomy and subtotal (simpson grade II) resection of tumor was done. Pathological examination confirmed an extranodal marginal zone B-cell lymphoma of Mucosa-Associated Lymphoid Tissue (MALT). The lesion was composed of a lymphoid mass with irregularly shaped follicles surrounded by many monomorphic small lymphocytes and a stained marginal zone for B-cell markers CD20 and CD29a. The natural history of primary CNS lymphoma and MALT type lymphoma are different. B-cell MALT lymphoma can mimic meningioma in its radiological features. Accordingly, MALT lymphoma of the CNS must be considered in the differential diagnosis of meningioma.

Particle System Graphics Library for Generating Special Effects

  • Kim Eung-Kon
    • International Journal of Contents
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    • v.2 no.2
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    • pp.1-5
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    • 2006
  • The modeling and animation of natural phenomena have received much attention from the computer graphics community. Synthetic of natural phenomena are required for such diverse applications as flight simulators, special effects, video games and other virtual realty. In special effects industry there is a high demand to convincingly mimic the appearance and behavior of natural phenomena such as smoke, waterfall, rain, and fire. Particle systems are methods adequate for modeling fuzzy objects of natural phenomena. This paper presents particle system API(Application Program Interfaces) for generating special effects in virtual reality applications. The API are a set of functions that allow C++ programs to simulate the dynamics of particles for special effects in interactive and non-interactive graphics applications, not for scientific simulation.

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Cytotoxicological Effect of Tebufenozide, an Insect Growth Regulator (IGR): Stimulation of Filamentous Actin Reorganization and Enhancement of Hsp27 Expression in Drosophila Kc Cells

  • Hwang, Jee-Na;Jung, Hwa-Jin;Seo, Young-Rok
    • The Korean Journal of Physiology and Pharmacology
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    • v.8 no.6
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    • pp.351-354
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    • 2004
  • The cytotoxicological responses to insect growth regulator (IGR), using tebufenozide as ecdysteroid mimic, were investigated in Drosophila Kc cells. Treatment of Kc cells with tebufenozide showed significant growth inhibition and striking morphological changes including aggregation and elongation of the cells. In order to understand the cellular mechanism underlying the response of Drosophila cells to tebufenozide, immunofluorescence microscopy was performed. We found that treatment of Kc cells with tebufenozide enhanced the reorganization of f-actin and stimulated the expression of hsp27. These data suggest a possible association of filamentous actin (f-actin) and hsp27 in the cytotoxicological mechanisms of growth regulators in Drosophila cells.

Development of Finger Robot for Simulating Fingers with Contracture and Spasticity (환자의 손가락 특성을 모사하는 로봇 개발)

  • Ha, D.K.;Song, M.;Park, H.S.
    • Journal of rehabilitation welfare engineering & assistive technology
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    • v.8 no.4
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    • pp.233-238
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    • 2014
  • In this paper, we developed a finger robot simulating spasticity and contracture which can be used as a testing bed for evaluating performance of hand rehabilitation devices while it can be also used to train clinicians for improving reliability of clinical assessment. The robot is designed for adult finger size and for independent control of Metacarpophalangeal Joint and Proximal Interphalangeal Joint. Algorithm for mimicking spasticity and contracture is implemented. By adjusting the parameters related to contracture and spasticity, the robot can mimic various patterns of responses observed in fingers with spasticity and contracture.

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Gaussian process approach for dose mapping in radiation fields

  • Khuwaileh, Bassam A.;Metwally, Walid A.
    • Nuclear Engineering and Technology
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    • v.52 no.8
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    • pp.1807-1816
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    • 2020
  • In this work, a Gaussian Process (Kriging) approach is proposed to provide efficient dose mapping for complex radiation fields using limited number of responses. Given a few response measurements (or simulation data points), the proposed approach can help the analyst in completing a map of the radiation dose field with a 95% confidence interval, efficiently. Two case studies are used to validate the proposed approach. The First case study is based on experimental dose measurements to build the dose map in a radiation field induced by a D-D neutron generator. The second, is a simulation case study where the proposed approach is used to mimic Monte Carlo dose predictions in the radiation field using a limited number of MCNP simulations. Given the low computational cost of constructing Gaussian Process (GP) models, results indicate that the GP model can reasonably map the dose in the radiation field given a limited number of data measurements. Both case studies are performed on the nuclear engineering radiation laboratories at the University of Sharjah.