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다중 네트워크 아키텍처 지원을 위한 객체지향 게임 네트워크 엔진의 설계 및 구현
형대진,이재윤,박경환 동아대학교 정보기술연구소 2007 情報技術硏究所論文誌 Vol.14 No.2
Online game that based on network communication, use various type of communication and network architecture for each character and genre of game. In this paper, we investigated and analyzed communication types used in online games and, based on the results, introduced a method of developing an object-oriented network engine supporting various types of network architecture. The developed network engine not only supports the development of games using various types of communication applicable to online games but also is easily expandable because of its hierarchical structure based on the object-oriented concept. Moreover, since it can support dead reckoning make up for network latency problem, we use very usefully for development of game.
원형빌렛으로부터 인볼루트 헬리컬 핀을 가진 제품의 비틀림 압출가공공정에 관한 연구
박대윤,진철호,진인태 釜慶大學校 1999 釜慶大學校 論文集 Vol.4 No.1
The twisting and extrusion process of the product with involute helical fin from the round billet is developed by the upper bound analysis. The twisting of extruded product is caused by the twisted die surface connecting the die entrance section and the die exit section linearly. In the analysis, the internal shear surface is defined as the curved twisted plane from the taisting of die surface and the shear work is calculated by the consumption of shear energy The increase rate of angular velocity is determined by the minimization of plastic work. The results of the analysis. It is shown that the angular velocity of the extruded product increases with the die twisting angle, the reduction of area, and decreases with the die length, the friction condition.
공유버스 멀티프로세서시스템을 위한 버스 시뮬레이터의 설계
윤현진,박길철,황대준 成均館大學校 科學技術硏究所 1994 論文集 Vol.45 No.2
In this paper, we develop the simulation environment for evaluating the performance of multiprocessor systems using Futurebus^+ as shared bus with various configurations. The environment is constructed into three stages. The first is devoted to the preprocessing stage in which the parallel work- loads, multiple threads, are generated from single- thread codes traced on the benchmarks. The second stage includes the engine of the bus simulator. The results from the simulation include cache hit ratio, processor utilization and bus congestion ratio according to changes of the number of processors, and cache coherency protocols. Based on the analysis of the simulation results, we noticed that the processor utilization and the bus congestion ratio are heavily depend on cache hit ratio. The write-broadcast protocol is shown as the most effective scheme in comparison with other cache coherence protocols experimented.
朴一男,金栢起,郭允植,李大寧 慶熙大學校 1991 論文集 Vol.20 No.-
In this paper, a fingerprint recognition system for identification and classification of fingerprint is described. To develop an efficient fingerprint identification system, modified algorithms are proposed in this thesis. The recognition algorithm consists of preprocessing(acquisition, binarization, thinning, restoration), classification and matching. Experimental thinning show that identification rate is about 91% for 80 file fingerprints and classification rate is more than 98% for 80 input fingerprints.
박철연,권정석,정진욱,이충기,현대성,최정윤 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2
Dermatomyositis is characterized by progressive, symmetric, Proximal muscle weakness and a nonsuppurative inflammatory myopathy of unknown etiology involving predominantly skeletal muscles. It is also characterized by typical skin lesions. Interstitial lung disease has a poor prognosis when it is associated with dermatomyositis. Organizing pneumonia is a disease in which granulation tissue fills the lumina of terminal and respiratory bronchioles and extends into the distal airspaces. The cryptogenic nature of the process is appreciated in that organizing pneumonia patterns of injury can be seen in secondary forms of the disease (secondary organizing pneumonia). Organizin pneumonia has been reported to occur in 5~10% in dermatomyositis-polymyositis patients Anti-histidyl tRNA synthetase antibody (anti-Jo-1) is a Predictive disease marker that is reported to occur in up to 70% of patients. We describe a 49-year-old male dermatomyosits patient who presented with organizing pneumonia and was found to have negative anti-Jo-1 antibody.
결핵성 육아종에서 Thioredoxin peroxidase-2 의 발현
박근호,유형륜,정영진,윤기중,한원철,유대열,문형배 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.2
Background: Thioredoxin peroxidase(TPX) is a kind of recently discovered antioxidant enzyme which react as rapid hydrogen ion donor for the removal of hydroperoxide. The action and distribution of the TPX was poorly understood in the human diseases. This experiments were designed for the study about the distribution of the TPX in the chronic granulomatous inflammation and about the correlation between the expression of TPX and the site of inflammation, histological activities of tuberculous inflammation or existence of mycobacterium in the inflammatory foci. Methods: The immunohistochemical stains were performed for the localization of the TPX-2 in the epithelioid cells, giant cells and lymphocytes in the chronic granulomatous inflammation. The tissue sections were obtained from the paraffin blocks of the 54 cases of tuberculosis (lung 21 cases, lymph node 12 cases, bone and soft tissue 12 cases, kidney 9 cases; active 33 cases, inactive 21 cases by the histologic classification; presence of mycobacterium 15 cases, no mycobacterium 39 cases by PCR reaction). Results: The expression of TPX-2 was 16.7% in the giant cells, 27.8% in the epithelioid cells and 100% in the lymphocytes of tuberculous inflammations. The expression of TPX-2 in the giant cells and epithelioid cells of the tuberculosis were 28.6% and 57.1% of the pulmonary tuberculosis; 33.3% in each cells of the renal tuberculosis; 0% in each cells of the lymph node or bone and soft tissue tuberculosis. The expression of TPX-2 in the giant cells and epithelioid cells were 9.1% in each cells of the active tuberculosis and were 28.6% and 57.1% in each cells of the inactive tuberculosis by histologic classification. The expression of TPX-2 in the giant cells and epithelioid cells was 40% in each cells of tuberculosis which mycobacteria were detected and the expression of TPX-2 was 7.7% and 23.1% in each cells which mycobacteria were not detected by PCR reaction in the paraffin embedded tissue. Conclusions: The above results were summarized that the TPX-2 in the giant cells and epithelioid cells were more frequently expressed in the inactive tuberculosis than in the active tuberculosis. These results suggest that the TPX-2 is a kind of regulating or suppressing factors in the activity of the tuberculosis.
1-Arylpyrrole로부터 9-Arylcarbazole의 합성
朴유미,金寅植,李龍均,成大東,金東賢,金倫瑛,鄭大一 東亞大學校附設基礎科學硏究所 1997 基礎科學硏究論文集 Vol.14 No.1
Carbazoles were discovered in anthracene oil of coal tar, and are the parent structure of a number of heterocyclic compounds. Much attention has been paid to carbazole derivatives recently as the materials for semiconductors and photoconductive compounds. Many conventional methods for synthesis of carbazoles were known such as Grabe-Ullmann methods and the Tauber methods. In the course of the investigation for the synthesis of pyrrole derivatives 3. We have found the formation of 9-arylcarbazoles 4 under refluxing glacial acetic acid. Thus we report the results here.
포스트-텐션 프리캐스트 외부 넓은 보-기둥 접합부의 비탄성 거동
박상욱,최윤철,김영찬,김대중,임재형,권기혁,문정호,이리형 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
Experimental results from the cycle lateral load tests for post-tensioned precast wide beam-column connections were presented. Six exterior beam-column assemblages of half scale were tested in the laboratory. The specimens consist of U-shaped precast wide beams and concrete columns. The continuity at the beam-column joint is achieved with the topping concrete and post-tensioning. The specimens were designed with parameters of the beam-to-column depth ration and the number of tendons within column core. The test results showed that the post-tensioned precast wide beam-column connection satisfied the provisional standard by ACI of acceptance criteria for concrete special moment frames.