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압력센서가 내장된 보행 분석기를 통한 아치 형성 보행의 생역학적 변수의 특성
이배열 ( Bae Youl Lee ),유승돈 ( Seung Don Yoo ),이승아 ( Seung Ah Lee ),전진만 ( Jinmann Chon ),김동환 ( Dong Hwan Kim ),정용설 ( Yong Seol Jeong ),노성규 ( Seong Gyu Noh ),이미애 ( Mi Ae Lee ),이우진 ( Woo Jin Lee ),김은혜 ( Eun 대한스포츠의학회 2016 대한스포츠의학회지 Vol.34 No.1
The objective of study was to compare biomechanical parameters between normal and arch building gait in healthy subjects. A total of 40 feet from 20 healthy adults were evaluated in this study. The participants were asked to walk on a treadmill comfortably at 2 km/hr for 30 seconds. Then, they were asked to walk after making arch building through raising arches with their feet by pulling the big toe toward the heel. Gait parameters such as geometry, center of pressure, maximum force, and maximum pressure were measured in normal and the arch building gait using a gait analysis system equipped with pressure sensor. Arch building gait demonstrated significantly (p<0.01) decreased forefoot maximum force but significantly (p=0.024) increased heel maximum force compared to normal gait. Maximum pressures of the midfoot and heel were also significantly (both p<0.01) increased. However, the maximum pressures of the forefoot were not significantly (p>0.05) different between the two conditions. Geometry, phase, and time parameters were not significantly (p>0.05) different between the two conditions, either. Although forefoot and midfoot maximum force were significantly decreased in arch building gait compared to those in normal gait, the maximum pressure of forefoot was not significantly changed, indicating decreased area of forefoot contact during arch building gait. The arch building gait moves the center of presser to the hind foot and redistributes the contact area, thus changing the distribution of maximum pressure.
이상진,황만하,이배성,고익환,Lee Sang Jin,Hwang Man Ha,Lee Bae Sung,Ko Ick Hwan 한국농공학회 2006 한국농공학회논문집 Vol.48 No.1
In this study, we developed a program to estimate discharge efficiently considering major hydraulic characteristic including water level, river bed, water slope and roughness coefficient in a natural river. Stream discharge was measured at Gongju gauge station located in the down stream of the Daechung Dam during normal and dry seasons from 2003 to 2004. The developed model was compared with the results from the existing rating curve at T/M gage stations, and was used for runoff analyses. Evaluating the developed river discharge estimation program, it was applied during 1983-2004 that base flow separation method and RRFS (Rainfall Runoff Forecasting System) which is based on SSARR (Streamflow Synthesis And Resevoir Regulation). The result presents the stage-discharge curve creator range at the Gong-ju is overestimated by approximately $10-20\%$, especially at the low stage. It is attributed to the hydraulic characteristics at the study. The discharge simulated by the RRFS and base flow separation, which is calibrated using the measurement at the early spring and late fall season during relatively d]v season, shows the least errors. The coefficient of roughness at Gongju station varied with the high and low water level.
Mobile IPv6 환경에서 동적 분기 라우터를 이용한 효율적인 자원 예약 방법
차우석,김은미,배호영,이배호,조기환,Cha, Woo-Suk,Kim, Eun-Mi,Bae, Ho-Young,Lee, Bae-Ho,Cho, Gi-Hwan 한국정보처리학회 2007 정보처리학회논문지 C : 정보통신,정보보안 Vol.14 No.3
RSVP(Resource reSerVation Protocol)는 송신노드와 수신노드 사이에 네트워크 자원을 예약하여 QoS(Quality of Service) 요구사항을 지원하는 인터넷 표준 프로토콜이다. 무선 이동환경에 RSVP를 적용하기 위해 공유경로 식별 문제와 자원 선-예약 문제가 해결되어야 한다. 본 논문은 후보 라우터와 분기 라우터를 이용하여 공유경로 식별 문제와 자원 선-예약 문제를 해결하는 DBRA(Dynamic Branch Router Approach) 기법을 제안한다. DBRA는 송신노드와 분기 라우터 사이에는 일대일의 RSVP 자원예약 관계를 갖으며, 분기 라우터와 후보 라우터들 사이에는 일대다의 RSVP 자원예약 관계를 갖도록 하여 많은 네트워크 자원 소모를 줄인다. 제안하는 DBRA 기법의 효율성을 분석하기 위해서 시뮬레이션을 이용하여 평균 패킷 전송율과 대역폭 이용률, RSVP 자원 예약 실패율 관점에서 RSVP와 MRSVP(Mobile RSVP), HMRSVP (Hierarchical MRSVP)를 비교대상으로 비교 분석하였다. RSVP (Resource reSerVation Protocol) is the Internet standard protocol for supporting QoS (Quality of Service) requirements by reserving network resources between the sender and the receiver. Several problems, such as common path identification and resource pre-reservation, should be solved to apply RSVP in wireless mobile environments. To resolve these problems, this paper proposes DBRA (Dynamic Branch Router Approach) based on two designated entities, candidate access routers and a branch router. While several RSVP sessions between a branch router and candidate routers are managed, DBRA makes use of only one RSVP session between the sender and a branch router. Based on a network simulation, the proposed scheme has been compared with MRSVP (Mobile RSVP) and HMRSVP (Hierarchical MRSVP) in terms of the average packet transmission rate, bandwidth utilization and RSVP session failure rate.
발효굴 섭취가 중년 여성의 신체조성, 근력 및 혈중 근성장 인자에 미치는 영향
박정현(Joung-Hyun park),김동석(Dong-Seok Kim),이배진(Bae-Jin Lee),허정수(Jung-Soo Her),전병환(Byeong Hwan Jeon) 한국해양바이오학회 2021 한국해양바이오학회지 Vol.13 No.2
Crassostrea gigas were fermented using L. brevis BJ20 to prepare fermented oyster extract (FO). The participants of this study were randomly assigned to FO and placebo (CON) groups. The FO group was given 1.0 g of FO supplementation and the CON group was given sucrose each day for eight weeks. The effects of FO supplementation on body composition, muscular r strength, and blood factors associated with muscle growth were assessed. The FO supplement was enriched with arginine (6,183.3 mg), phenylalanine (217.9 mg), leucine (122.6 mg), isoleucine (59.8 mg), valine (16.4 mg), and γ-amino butyric acid (GABA, 1,053.7 mg). The total fat was significantly decreased in the FO group compared with the CON group (p < 0.05). 60D/S Ext.T/Work and 60D/S Flex.T/Work concomitantly with 60D/S Flex.PeakTQ/BW were significantly increase d by FO treatment compared to CON group (p < 0.05). However, posture stability was not significantly different between the groups. The levels of angiotensin-converting enzyme were significantly decreased within the FO group (p < 0.05). The FO group showed significantly decreased levels of tumor necrosis factor-α and increased levels of human growth hormone compared with the CON group (p < 0.01). The levels of insulin-like growth factor-1 increased (p < 0.01) in the FO group while that of creatine kinase and triglyceride decreased significantly compared with the CON group (p < 0.05). These results demonstrated that FO supplementation is effective in preventing sarcopenic obesity and maintaining and strengthening muscular function in elderly women. Hence, FO supplements can be used as functional ingredients for these benefits.