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전술 엣지 클라우드에서의 컨테이너 이미지 및 상태 관리 기법
임호근,김영한 한국통신학회 2022 韓國通信學會論文誌 Vol.47 No.7
The tactical edge cloud architecture is provided by using container technology to deploy various functions required in the tactical environment as lightweight workloads. In the tactical cloud, physical resource optimization and disaster recovery must be supported, which can be solved by workload migration that moves workloads elsewhere. Container images and status information are required to support workload migration. However, in a tactical edge cloud environment where the performance of the network is limited, the link to the upper node is unstable, which affects the download speed. Although it can be solved by preparing container images for deploy workload to all nodes, this creates a waste of resources. In this paper, we propose a technique to download the container images and status information of Stateful workloads required for migration from neighboring nodes by applying P2P distributed systems in the aforementioned edge cloud, and verify the speed and storage capacity reduction effect during workload migration through feature implementation. 전술 엣지 클라우드 아키텍처는 컨테이너 기술을 활용하여 전술 환경에서 필요한 다양한 기능들을 경량 워크로드로 배포함으로써 제공한다. 전술 엣지 클라우드에서는 물리 자원의 최적화 및 장애 복구를 지원해야 하며 이는워크로드를 다른 곳으로 이전 시키는 워크로드 마이그레이션으로써 해결이 가능하다. 워크로드 마이그레이션을 지원하기 위해서는 컨테이너 이미지와 상태 정보가 필요하다. 하지만 네트워크의 성능이 제약된 전술 엣지 클라우드환경에서는 상위 노드로의 링크가 불안정하기 때문에 다운로드 속도에 영향을 준다. 워크로드를 배포하기 위한 컨테이너 이미지를 모든 노드에 미리 준비시키는 것으로 해결될 수 있지만 이는 자원의 낭비를 발생시킨다. 본 논문에서는 전술 엣지 클라우드에서 P2P 분산 시스템을 적용하여 마이그레이션 시 필요한 컨테이너 이미지 및Stateful 워크로드의 상태를 이웃 노드에서 가져오는 기법을 제안하고 기능 구현을 통해 워크로드 마이그레이션 시의 지연시간 및 저장 용량 감소 효과를 검증했다.
완전 비트 순차 구조에 근거한 2차원 DCT/IDCT VLSI 구현
임호근,류근장,권용무,김형곤 대한전자공학회 1994 전자공학회논문지-A Vol.31 No.6
The distributed arithmetic approach has been commonly recognized as an efficient method to implement the inner-product type of computation with fixed coefficients such as DCT/IDCT. This paper presents a novel architecture and the implementation of 2-D DCT/IDCT VLSI chip based on distributed arithmetic. The main feature of the proposed architecture is a fully 2-bit serial pipeline and parallel structure with memory-based signal processing circuitry, which is efficient to the implementation of the bit-serial operation of distributed arithmetic. All modules of the proposed architecture are designed with NP-dynamic circuitry to reduce the power consumption and to increase the performance. This chip is applicable in HDTV systems working at video sampling rate up to 75 MHz.
임호근 公州大學校스포츠科學硏究所 1987 스포츠科學硏究所論文集 Vol.- No.1
A two-dimensional film analysis was performed on three women finalists in the Javelin throw of the Los Angeles Olympic Games of 1984 and one woman finalists in the Javelin throw of the Seoul Asian Games 1986. In addition to the great inter individual variation in the measured kinematic and kinetic parameters, the results indicated, despite great variation in throwing distance in group(55.88m - 69.56m) the reaeare velocities were in relatively small range(20.73m ×??,-23.62m×??). High impact loadiong was specific to the last on the ground. It was characterized by a short duration(0.032,) and high velocity knee flexion(12.66±2.66±2.11 and 12.27±3.81 rad × S¹, respevtively,for women). The respective knee extension velocitities averaged 5.80±2.00 and 7.60±5.17 rad × S¹, Despite the fact that a small number of analyzed worlr class throws revealed only some biomechanical differences between good and poored performance, the result can be used to identify some new criteria for successful performance in Javein throw.
SPORTS 外傷에 關한 調査硏究 : Centering around 88 Olympic with representative player '88서울올림픽男子代表選手를 中心으로
盧日煥,姜忠植,金達永,金興植,朴贊弘,元忠熙,姜信一,金正洙,朴晶來,李哲遠,林鎬根 公州大學校스포츠科學硏究所 1988 스포츠科學硏究所論文集 Vol.- No.2
According to the investigation made by analyzing cause of the detail about sports injury. We make this things an object of all the male representative players 254 out of 286 (88.81%) that took part in the whole event from April 15, 1988 to September 16, 1988 in Seoul Olympic Games. The results are as follows. 1. The representative players in Korea started in the athlete life at age 13.1 on the average. Gymnast early started at age 8.4 and yachtist was later at age 18 in the athlete life. 2. There are about 5.7 cases on the outbreak of the sports trauma per person of player a year. This came into existence near the ankle at the high rate of damage formed 11.90%. 3. A sort of sports injury in analysis muscular bruise broke out at the highest rate of occurrence formed 15.70%. 4. The greater part of representative players themselves the injury of trauma by massage (12.53%). Some of them undergo medical treatment to the specialist hospital once a year on the average. Most of hockey players have had experience in this kind of injury treatment three times one year to per person of players. A few of them showed 0.15 times per person a year. 5. Most of representative players have been periodically to the orthopedist formed 27.59 (732) out of all 2653 cases at the high rate of fact. Especially a sort of injury in analysis, the injury of ankle region showed the percentage 11.86 (704) out of all 5,937 cases at the highest rate. 6. The period of medical treatment of the representative players in Korea came out about 14.7 days. Besides period of the other player's treatment came out mostly from one to five days formed 44.82%(935 cases) 7. Manyof them have been roughly treated with muscular bruise in analysis of sports injury. They were taking pains with muscular bruise formed 15.65% (1003) out of all 6408 case. 8. In major cause of sports injury came into existence during the training with waste of physical stamina formed 35.89% and were beyond their power with practicing the game formed 48.09%. Also, a sort of those were brought about the cause of sports injury with desire of outcome too much during in the game formed 44.20%