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Effects of Spatio-temporal Features of Dynamic Hand Gestures on Learning Accuracy in 3D-CNN (3D-CNN에서 동적 손 제스처의 시공간적 특징이 학습 정확성에 미치는 영향)

  • Yeongjee Chung
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.23 no.3
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    • pp.145-151
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    • 2023
  • 3D-CNN is one of the deep learning techniques for learning time series data. Such three-dimensional learning can generate many parameters, so that high-performance machine learning is required or can have a large impact on the learning rate. When learning dynamic hand-gestures in spatiotemporal domain, it is necessary for the improvement of the efficiency of dynamic hand-gesture learning with 3D-CNN to find the optimal conditions of input video data by analyzing the learning accuracy according to the spatiotemporal change of input video data without structural change of the 3D-CNN model. First, the time ratio between dynamic hand-gesture actions is adjusted by setting the learning interval of image frames in the dynamic hand-gesture video data. Second, through 2D cross-correlation analysis between classes, similarity between image frames of input video data is measured and normalized to obtain an average value between frames and analyze learning accuracy. Based on this analysis, this work proposed two methods to effectively select input video data for 3D-CNN deep learning of dynamic hand-gestures. Experimental results showed that the learning interval of image data frames and the similarity of image frames between classes can affect the accuracy of the learning model.

Inferring Transcriptional Interactions and Regulator Activities from Experimental Data

  • Wang, Rui-Sheng;Zhang, Xiang-Sun;Chen, Luonan
    • Molecules and Cells
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    • v.24 no.3
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    • pp.307-315
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    • 2007
  • Gene regulation is a fundamental process in biological systems, where transcription factors (TFs) play crucial roles. Inferring transcriptional interactions between TFs and their target genes has utmost importance for understanding the complex regulatory mechanisms in cellular systems. On one hand, with the rapid progress of various high-throughput experiment techniques, more and more biological data become available, which makes it possible to quantitatively study gene regulation in a systematic manner. On the other hand, transcription regulation is a complex biological process mediated by many events such as post-translational modifications, degradation, and competitive binding of multiple TFs. In this review, with a particular emphasis on computational methods, we report the recent advances of the research topics related to transcriptional regulatory networks, including how to infer transcriptional interactions, reveal combinatorial regulation mechanisms, and reconstruct TF activity profiles.

Adult Onset of Langerhans Cell Histiocytosis in the Rib - Report of 2 cases - (성인 늑골에 발생한 Langerhans 세포 조직구증 - 2예 보고 -)

  • 김성완;김덕실;배종엽;변경환;김병기
    • Journal of Chest Surgery
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    • v.36 no.7
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    • pp.539-543
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    • 2003
  • Langerhans cell histiocytosis (LCH), previously called histiocytosis X, refers to a spectrum of disease characterized by idiopathic proliferation of histiocytes producing focal or systemic manifestations. Causes and pathogenesis remain unclear The basic histopatholgic fndings are identical in the three well-established clinical syndromes (eosinophilic granuloma, Hand-Shuller-Christian disease, Letterer-Siwe disease). The disease has a predilection for children, although it may occur in adults. We experienced two cases of adult onset Langerhans cell histiocytosis in the ribs. One case was associated with diabetes insipidus and the other case had a solitary lesion.

Effect of Damping Coefficients in Earthquakes Resistant Design with Viscous Dampers for Bridges (교량의 내진설계에 있어서 점성감쇠기능받침의 감쇠계수 영향평가)

  • 정상모
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2000.10a
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    • pp.399-406
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    • 2000
  • Viscous dampers have been utilized as bearings and STU`s (Shock Transmission Unit) in earthquake resistant designs for bridges. Some viscous dampers are used as energy dissipators on one hand, but some dampers such as STU`s are used as fixing devices during an earthquake on the other hand. This paper discusses the effect of viscous dampers on the response of bridge with respect to the magnitude of damping coefficients. For this purpose, a typical bridge was taken as an example, and time-history dynamic analysis have been carried out. The input seismic data used in the analyses are relevant to the response spectra in the Koreans design code. The results show that there is an optimum value of coefficient considered most effective in the design. A STU with a large value of coefficient seems to make its support fixed. The response of the bridge is not much sensitive to the variation of the damping coefficients.

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Pneumatic circuit design and Performance test of Air balancer (에어밸런서 공압 회로의 설계 및 성능 실험)

  • Kim, D.S.;Bae, S.K.
    • Transactions of The Korea Fluid Power Systems Society
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    • v.3 no.3
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    • pp.20-24
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    • 2006
  • Air balancer is a conveyance cargo-handling machine, used in assembly and process lines of car and machining industries. This can lift up an object, the weight of which is from 5 to 200 kg, and moves it to a position. As industrial technologies evolve, it is required to move an object and fit it into a specified position with greater accuracy, rather than performing simple tasks such as lifting objects up and down as conventional ones do. There is also a demand to handle an object with one hand, rather than with two hands,. Through designs of manifold unit for an air balancer function, pilot regulator unit to keep pressure constant, hand unit for an accurate load perception function, and air balancer circuit, this study enables everybody to work it with ease and convenience. Experiments and comparisons were conducted for the performance evaluation of the circuit.

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The Life Protection by Criminal Law (형법을 통한 생명의 보호)

  • Park, Moo-Won
    • The Korean Society of Law and Medicine
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    • v.11 no.1
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    • pp.297-329
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    • 2010
  • The bioethics as a comprehensive and normative control method of life sciences including the technology of advanced medical care, on the one hand, it has modified the conditions for allowing the progress of life sciences. On the other hand, it has put the brakes on attempts of life sciences violating the dignity and value of human beings, natural order. Positively, bioethics presents ethical bases, suggests organization of the legal and institutional conditions, and enables elimination of the legal and institutional obstacles, for the progress of life sciences. Negatively, it has presented justifiable prospects and road maps of life sciences, not to take indiscreet and intemperate turn of violating the dignity and value of human beings, natural order, and its such roles must be carried on.

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Sensory and Mechanical Characteristics of Ssuck-injulmi Supplemented by Mugworts (쑥인절미의 제조방법에 따른 텍스쳐 특성)

  • 이효지;윤혜영
    • Korean journal of food and cookery science
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    • v.11 no.5
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    • pp.463-471
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    • 1995
  • "Suck-injulmi" is one of the Korean traditional rice cake made from glutinous rice and mugworts. The optimun conditions for the preparation of "Ssuck-injulmi" were investigated. The best recipe of "Ssuck-injulmi" was 1) adding 240 g (80%) glutinous rice flour and 60 g (20%) raw or boiled mugworts by hand milling, or boiled mugworts after steaming glutinous rice by hand milling. 2) adding 210 g (70%) glutinous rice and 90 g (30%) boiled mugworts by mechanical method. The Moisture of "Ssuck-injulmi" was 43.39%-51.33%. The Hardness of "Ssuck-injulmi" was high in the order of 54,53, 52, 51 and The Cohesiveness was 53, 54,51,52 and The Elasticity was 51,53,54,52 and The Gumminess and The Chewiness were 54, 53, 51, 52 and The Adhesiveness was 52, 53, 51, 54. The value of ′L′ was high in the 52, the value of ′a′ was 54 and the value of ′b′ was 53.

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Dealing with Unruly Behavior on Board Aircraft: A Chinese Perspective

  • Qin, Huaping
    • The Korean Journal of Air & Space Law and Policy
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    • v.27 no.2
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    • pp.193-209
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    • 2012
  • China's airline industry is experiencing a booming development as one hand, on the other hand the incidents involving unruly behaviour on board aircraft also becomes a growing concern for the whole industry. The thesis examines the basic issues concerning the unruly behaviour, such as definition of unruly behaviour, the impact and root causes of unruly behaviour. Then it focuses on the China's legal sources governing the problem of unruly behaviour. Generally speaking, China's legislation with this respect is systematic and self-contained, except some minor shortcomings which need to be revised. Finally the thesis holds the view that the preventative measures jointly contributed by all the parties concerned are something more important than the legislation itself.

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Contribution of institutional shocks to Tunisian macroeconomic fluctuations: Structural VAR approach

  • Zouhaier, Hadhek
    • East Asian Journal of Business Economics (EAJBE)
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    • v.1 no.1
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    • pp.8-16
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    • 2013
  • Purpose: The objective of this paper is to identify and assess the contribution of budgetary, monetary and institutional shocks affecting the Tunisian economy over the period 1976-2003. The methodology used is vector autoregressive models and structural recent techniques for the analysis of time series related. The empirical results show a significant relationship between the supply shock and institutions on the one hand, and between institutional shocks and economic activity on the other hand. Research Design, Data and Methodology: As part of this section we will try to identify and assess the contribution of various shocks to macroeconomic variables' fluctuations for the Tunisian economy. The study period is: 1976-2003 and observations are annual. Results: The real business cycle theory argues that fluctuations in aggregate economic activity are the result of the interaction of the only real factors namely agents' preferences, technological opportunities, factor endowments and possibly certain institutional constraints. Conclusions: The lowest contribution to the variability of these rights is the monetary shock. As for "civil liberties", the largest share of their variability is the shock relating to the "political rights" during the first four periods .

A Simple Dual-Antenna Diversity Gain Measurement System at 2.4GHz

  • Kim, Jin-Gyong;Chung, Kyung-Ho;Ho, Yo-Choul;Kim, Moon-Il
    • Journal of IKEEE
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    • v.13 no.2
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    • pp.220-223
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    • 2009
  • A simple measurement system is built to estimate the dual-antenna diversity gain at 2.4GHz easily in open lab environment. To obtain multipath fading propagation channel, the system consists of two transmission horn that placed on opposite direction and a rotating stage mechanically changing the position of test dual-antenna with time over distance greater than one wavelength. Estimated diversity is nearly same as theoretical value such that measured diversity gain of 30mm separated is about 6dB similar to theoretical value of 5.7dB and increases monotonically with the increasing separation distance as predicted by the theory. Proposed measurement system that is simple enough to fit in a small space can evaluate the performance of various dual-antennas with a reasonable accuracy with lower 5% difference between the ten sets of measured waveform distribution and theoretical Rayleigh cumulative distribution.

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