http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
확공성과 비확공성 대퇴골 금속정 사용에 따른 치료결과의 비교
조수현,조형진,김범수,박태우,조성도,류석우,조용선 대한골절학회 2001 대한골절학회지 Vol.14 No.2
Purpose : To evaluate the effectiveness between reamed and unreamed nailing in the treatment of femoral shaft fracture. Materials and Methods: Among the patients of femoral shaft fracture who were treated with reamed and unreamed nail, we reviewed 49 patients whose follow-up was possible for more than 1 year. The patients were divided into two groups: the reamed and the unreamed group. We reviewed union time, nonunion rate, complication and operation time and compared the effectiveness. Results: The average union time was 30.6 weeks in unreamed group and 27.8 weeks in reamed group, which was not different statistically. There were 5 cases of nonunion in 22 unreamed cases and 3 cases in 27 reamed cases, which meant no statistical difference. There was no significant difference of complications between the two groups. The mean operation time was 141 minutes in reamed group and 110 minutes in unreamed group, which meant statistical difference. Conclusion: There was no significant difference in union time, nonunion rate and comlication between reamed and unremed group. The operation time was shorter in unreamed group, so unreamed nailing can be preferred in the treatment of multiply injured patient.
後続母音の長短による日本語摩擦音の音声的な長さの実現 ― 遅延反復課題を用いた生成実験と聴覚的評定に基づいて ―
조수현 한국일본어교육학회 2019 日本語敎育 Vol.0 No.88
The purpose of this study is to investigate how Korean learners control the length of Japanese fricatives and long and short vowels following the fricatives. This Experiment was conducted using a reading paradigm and the delay repetition technique with 36 meaningful words. 40 students learning Japanese pronounced these words using two different methods and were judged for the naturalness in terms of length. The results revealed that there was a strong effect of two production methods on the voicing and length of fricatives. The factors that significantly affect the naturalness of the length of the fricatives were voicing of the fricatives, the length of the following vowel, the correctness of the single sound of fricatives, and two different methods. Depending on different stimuli such as visual and auditory, learners were influenced by the voicing of the fricative. In the reading paradigm, the voiced fricative [ʑ] preceding a short vowel /o/ and the voiced fricative [ʑ] preceding a long vowel /oo/ were rated highly unnatural. On the other hand, the unvoiced fricative[s], [ɕ] preceding a long vowel /oo/ at the end of the word increased the difficulty in producing the correct length in the delayed repetition technique. In conclusion, this study offers the factors of timing control for the length of fricatives and also can contribute to the improvement of Japanese language education.
Effect of foaming processes on the reduction of warpage in glass fiber reinforced plastic composites
조수현,김현근,손주성,유영재,차성운 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.9
In the injection molding process, dimensional stability of the product is an important factor. Because reinforced plastic composites show shrinkage and warpage that are different from non-reinforced plastics, it is necessary to compensate for these differences. In this study, two foaming methods, microcellular foaming injection molding and chemical foaming injection molding, were applied to achieve dimensional stability in the molding process of glass fiber reinforced plastic (GFRP) composites. Both microcellular foaming and chemical foaming showed a warpage reduction effect. Therefore, if a selective foaming process is applied to achieve weight reduction and necessary material properties, microcellular foaming and chemical foaming can be used to achieve dimensional stability in reinforced plastic composite materials.
Rate Adaptation with Q-Learning in CSMA/CA Wireless Networks
조수현 한국정보처리학회 2020 Journal of information processing systems Vol.16 No.5
In this study, we propose a reinforcement learning agent to control the data transmission rates of nodes in carriersensing multiple access with collision avoidance (CSMA/CA)-based wireless networks. We design areinforcement learning (RL) agent, based on Q-learning. The agent learns the environment using the timeoutevents of packets, which are locally available in data sending nodes. The agent selects actions to control thedata transmission rates of nodes that adjust the modulation and coding scheme (MCS) levels of the data packetsto utilize the available bandwidth in dynamically changing channel conditions effectively. We use the ns3-gymframework to simulate RL and investigate the effects of the parameters of Q-learning on the performance ofthe RL agent. The simulation results indicate that the proposed RL agent adequately adjusts the MCS levelsaccording to the changes in the network, and achieves a high throughput comparable to those of the existingdata transmission rate adaptation schemes such as Minstrel.
加耶墓制의 龕室 再檢討-咸安 道項·末山里古墳群을 中心으로-
曺秀鉉 영남고고학회 2004 嶺南考古學 Vol.- No.35
이 글은 함안 도항말산리고분군의 무덤에서 확인된 들보시설(감실)을 대상으로 그 기능과 계통에 대해서 재검토한 글이다. 분석대상은 들보시설이 확인되었거나 추정되었던 10기를 대상으로 이루어졌으며 그 결과, 석곽내부의 양장벽에 설치된 들보시설은 내부의 주피장자를 안치한 목관을 1차적으로 보호하는 들보(梁)를 끼우기 위한 시설로 판단되었다. 또한 그 설치지점에 의해 주피장자, 유물부장, 순장자공간의 3개의 공간으로 분리되는 공간분할의 기능도 함께 갖추고 있었던 것으로 파악되었다. 양단벽에 설치된 들보시설은 양장벽의 들보시설에 끼워진 들보와 맞닿아 목개의 기능을 가미한 목관의 2차 보호시설로 파악되었다. 이 뿐만 아니라 상부개석의 붕괴를 대비한 순장자공간과 유물부장공간을 보호하기 위한 기능도 겸하고 있었던 것으로 생각된다. 이 외에도 日本의 和歌山縣의 橫穴式石室墳에서 확인된 石梁시설과 같이 강도가 약한 벽석의 붕괴를 방지하기 위한 기능도 생각해 볼 수 있다. 이러한 들보시설의 계통은 묘제형태, 규모, 시기, 기능 등 다양한 측면에서 고구려와 백제지역과는 많은 차이가 있으므로 기존에 제기된 함안지역 자체발생설이 가장 타당하다고 할 수 있다. 이 들보시설은 석곽의 규모가 약 7~9m정도의 초대형수혈식석곽묘에서만 설치되었고, 무덤의 조영시기가 5세기 3/4~6세기 1/4분기의 한정된 시기에만 확인된다. 이 시기는 신라가야지역의 무덤축조기술이 가장 발전된 시기이다. 들보시설은 이 시기에 함안지역을 무대로 성장한 안라국(아라가야)의 숙련된 무덤축조기술력과 매장방법이 결합해서 창안된 독특한 구조로 볼 수 있다.