외국문 요약

Kuk,Min-Ho 동양사회사상학회 2002 사회사상과 문화 Vol.5 No.-

步速變化에 따른 미끄러짐의 생체역학적 연구

서국웅,윤양진,서국은,이중숙,김용재,이언석,이훈식 釜山大學校 附設 體育科學硏究所 1992 體育科學硏究所 論文集 Vol.8 No.-

The purpose of this study was to analyze walking steps to prevent unnecessary energy consuming and prevention of injury from sliding when someone was walking. The questionnaire, high speed video system, E.M.G. system, and force platform system were used to analyze sliding mechanism in biomechanical perspective. Several results were found as following: 1. According to questionnaire regarding sliding, 93.3% of participants have sliding experiences. People have sliding experiences by greasy floor(48.4%) and obstacle (22.5%). Sliding types were found from different kinds of shoes such as sneakers (48.8%) and boots (34.2%). The results were presented as following 44.6% of participants were fall down front direction and 40.3% of people fell down rear side. 2. According to the high speed video system analyzer, step sliding increased with increasing step speed from distance and acceleration speed experiment with 80 steps/min, 100 steps/min, 120 steps/min. Also, the most sliding were occurred with sneakers, boots, and bare feet as order. 3. According to E.M.G. test results, the vastus lateralis M., the vastus medialis m., and the tibialis anterior m. of electric action potential presented strongly when participants fell front, rear, and right side. The vastus lateralis m. and the tibialis anterior m. of electric action potential presented strongly when someone fell left side, but the vastus medialis m. and the gastrocnemius m. of electirc action potential presented as weaker. 4. According to the force platform test results, the most big change of floor antipower of x-axis presented when someone fell the left side. The most of big change of floor antipower of y-axis presented when someone fell down rear side. The most of big change of floor antipower of z-axis presented similarly when someone fell the front, rear, left, and right side.

6G-LEGO: A framework for 6G network slices

Slawomir Kukliński,Lechosław Tomaszews,Robert Kołakowski,Prosper Chemouil 한국통신학회 2021 Journal of communications and networks Vol.23 No.6

Network slicing is a relatively recent paradigmthat has become a subject of intensive research. Most of theexisting approaches follow the ETSI NFV MANO model withsome extensions related to multi-domain slicing, slice selection,etc. The framework is a part of the standalone variant ofthe 5G network standardized by 3GPP. However, the currentimplementation of network slicing in 5G has several limitations,especially regarding management and orchestration: The isolationof slice management is not appropriately addressed, the slicetenant management capabilities are limited, and the managementand orchestration centralization raises serious scalability andreliability issues. Moreover, the slice-level operations are notwell-separated from other processes due to a lack of properseparation of concerns. As a result, the overall network slicingarchitecture has complex interactions with many components ofthe 5G network. In this paper, we describe a new framework thatuses an approach to sustain self-managed and self-orchestratedslices. To that end, we propose a modular architecture in whichslices have embedded (in-slice) management and orchestrationsupport, and multi-domain slices rely on multiple slice-agnosticorchestrators. The framework enables the composition of newslices as a combination of single domain-slices in a relativelyeasy, technology-independent manner.

CUG에 의한 원거리정보통신망 구축과 활용:국제종합건설 사례

이국희,송수섭 한국데이타베이스학회 1994 Journal of information technology applications & m Vol.1 No.2

아동들의 태권도 수련활동참가에 따른 열등감 및 자아존중감의 관계

정재엽,정국현,김지영,김현철,이용국 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.2

The purpose of this study was to identify the relationship between children's Inferiority and self-esteem during Taekwondo practice. In order to achieve this purpose, 480 subject were selected among participants of Taekwondo activity programs in the Seoul area by using the stratified cluster random sampling method. Out of the 480 questionnaires responded to. only 414 were used for data analyses because 66 were responded to incompletely or incorrectly. The instrument for data collection was a questionnaire in which Inferiority and self-esteem consisted of items identified by Jun(1999) and Jun(1993), respectively. The statistical methods utilized in the study for analyzing the collected data were reliability analysis, descriptive statistics, one-way ANOVA, standard multiple regression analysis and the following results were obtained: First, both Inferiority and self-esteem differ statistically and significantly according to both sociodemographic variables. Second, both Inferiority and self-esteem differ statistically and significantly according to Taekwondo practice. Third, Inferiority statistically and significantly influences self-esteem.

임팩트시 테니스 라켓 재질의 차이에 따른 근전도 분석

윤양진,유국종,서국웅,정미라,강영택,이훈식,서국은 釜山大學校 附設 體育科學硏究所 1999 體育科學硏究所 論文集 Vol.15 No.-

The purpose of this paper is to select 7 male athletes and female athletes of high school, and to compare their active potential differences of upper arm muscles according to characteristic of a racket. the results obtained are as follows: 1. According to the accumulative distribution rate of racket material, graphite and wood material show better efficiency in case of brachio radialis muscle of male athletes, but the racket material shows no constant efficiency in brachii radialis muscle of female athletes. In case of flexor carpi radialis muscle, wood material provides better efficiency only for male athletes. In case of triceps brachii muscle, wood material gives better efficiency to males athletes and steel material gives better efficiency to females athletes. Especially in case of biceps brachii muscle, neither male nor female athletes are influenced by racket materials at impact. 2. In the muscle load rate according to racket material, wood has the highest muscle active potential and graphite has the lowest active potential. Therefore, graphite is thoght to be better in the efficiency of muscle load rate.

스마트폰 App 개발 플랫폼 평가항목 도출

이국헌, 신숙조, 조인준 배재대학교 공학연구소 2011 공학논문집 Vol.13 No.1

The proportion of smart phones in the mobile life has become an indispensable presence. Activation of these smart phones, one of the driving force App market is showing steady growth in the different day of the new App is being developed. Depending on the activation of these App Market App development platform and drive his big issues are superior to each manufacturer to support App development platform, but the user perspective, is difficult to determine which platform is superior, for developers it comes to fit a variety of OS App require a development platform that does not include verification of the criteria is Free. In this paper, App development platform for smart phones, software quality assessment for the ISO / IEC 9126 smart phone App Development Using the model performance evaluation was devised.

경기적 Sports 클럽의 경영요인 분석

정국현,이신언,이명섭 한국스포츠리서치 2001 한국 스포츠 리서치 Vol.12 No.4

Analysis of Management Elements in Athletic Sports Club. The purose of this study was to analyze the management elements in athletic sports club and to clarify the relation between the results in competitions and the intermedialte variables such as the aim of their activity and the morale chments. The main results were summarised as follows : 1. High competitive level group showed higher morale point and higher argreement rate concerning the aim of activity than low level group. 2. The following four patterns were categorized according to the results in competitions and the aim of activity. P1: competitive and high performance level P2: competitive and low performance level P3: recreational and high performance level P4: recreational and low performance level 1) Applying Hayashi's quantification theory Ⅱ, P1 and P4 were found to be the most contrastive pair. (correlation ratio=0.697, discriminant power=97.9%) 2) The secondary contrastive pair was P2 and P1(0.474, 88.9%) 3) The least contrastive pair was P3 and P4 (0.237, 73.4%) 3. Analysing by partial correlation coefficient, the main distinctive items may be the elements concerned with a coach and morale(especially, the factors of membership) It is very important for the administrators to control these elements. At the same thime the administrators should take the leadership or organizational behavior in consideration of the four different patterns.

이산 웨이브릿 워터마킹을 이용한 디지털 이미지 보호

김국세,이정기,박찬모,조애리,류천열 조선대학교 전자정보통신연구소 2003 電子情報通信硏究所論文誌 Vol.6 No.1

정보통신의 비약적인 발전에 힘입어 멀티미디어 데이터는 언제 어디서든 전송 받거나 공유할 수 있게 되었다. 아날로그 형태에서 디지털의 아날로그를 형태로 빠르게 대체되고 있으며, 디지털로 신호를 표현하는 방법은 기존 사용하여 표현하는 방법에 비해 많은 장점을 가지고 있다. 하지만 디지털로 된 데이터는 언제 어디서든 대단위 복제가 가능하다. 디지털 영상 정보의 보호를 위해 디지털 워터마크(Digital Watermark)가 있다. 디지털 워터마크는 공개키 알고리즘이나 방화벽 등으로 해독된 영상에 대하여 부가적인 보호를 제공한다. 디지털 영상에 대한 저작권 정보, 배포자 정보 그리고 사용자 정보를 영상에 삽입함으로써 훗날 법적인 문제가 발생하였을 때 해결책을 제시할 수 있다. 본 논문에서는 디지털 영상 데이터의 정보 보호를 위해 주파수 영역에서의 웨이브릿 변환(Wavelet Transform)을 이용한 이미지 적용 디지털 워터마킹(Image-Adaptive Digital Watermarking) 방법을 제안한다. 이미지 적응 웨이브릿(Image-Adaptive Wavelet)은 영상을 주파수적으로 분해하면서 각 대역들의 공간 영역에서의 정보를 함께 지닌고 JND긯(Just noticeable difference)을 포함한다. 이미지 적응 웨이브릿의 이러한 특성을 이용하여 다해상도 분해하고, 손실 압축(Loss Compression)이나 필터링(Fitering), 잡음(Noise)등에 크게 영향받는 저주파 성분과 인간의 시각적으로 큰 의미를 갖는 고주파 성분의 특성을 이용하여 워터마크를 삽입한다.

유사체액에서의 전기화학적 처리가 티타늄 표면의 인산갈슘 흡착에 미치는 영향

조국현,김문영,송광엽,배태성,이민호 大韓齒科器材學會 2002 대한치과재료학회지 Vol.29 No.3

This study was performed to examine the effect of electrochemical treatment on the precipitation of apatite-like calcium phosphate in a simulated body fluid. Titanium plates of 20×20×1 ㎣ in dimensions were polished sequentially from #600 to #2,000 emery paper and one surface of each specimen was received an additional polishing sequence through 0.1㎛ alumina paste. To improve the bioactivity of titanium plates, they were electrochemically treated at 100 mA for 20 min in an electrolyte containing the calcium and phosphate ions, and the Hanks' solution with pH 7.4 at 36.5℃ for 30 days, and the surfaces were examined with X-ray diffractometer(XRD), scanning electron microscope(SEM) and X-ray photoemission spectroscopy(XPS). Precipitation of calcium phosphate and CaO were observed on the electrochemically treated titanium surface in a simulated body fluid after treatment at 600℃. Precipitation of calcium phosphate was densified and coarsened with increasing the temperature of the electrolyte solution in the range of 20-80℃. The calcium phosphate contained phosphate in the form of Po₄^3-, HPO₄^2-, and H₂PO₄^-.