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IVRO를 이용한 하악골 전돌증 환자의 수술전후 악관절 증상 변화에 대한 임상적 평가
김진권,박광호,김형곤,김상수,김기영,허종기,Kim, Jin-Kwon,Park, Kwang-Ho,Kim, Hyung-Gon,Kim, Sang-Soo,Kim, Ki-Young,Huh, Jong-Ki 대한악안면성형재건외과학회 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.1
Preoperative and postoperative TMJ symptoms were observed in mandibular prognathism of 30 patients operated on by Le Fort I osteotomy and intraoral vertical ramus osteotomy. The alterations of TMJ symptoms were investigated and the relationship between changes of TMJ symptoms and some cephalometric values including occlusal plane angle, mandibular plane angle, posteior ramal height and a degree of deviation of mandibular incisor midline to facial midline were observed. The results are as follows. The incidence of patient with TMJ symptoms before orthognathic surgery was 40% and after orthognathic surgery was 20%. The most frequetly encountered symptoms in orthognathic TMJ dysfunction patients were TMJ pain and/or clicking. After surgery 66% of the preoperative symptomatic patients reported improvement TMJ symptoms. On the orther hand 2 patient (6%) of the preoperative asymptomatic patients developed TMJ symptoms after surgery. Preoperatively, 60% of the facial asymmetric patients with mandibular prognathism had TMJ symptomas. The more severe facial asymmetry was, the higher incidence of TMJ symptoms was. The alteration of occlusal plane angle and mandibular plane angle seems to be one of the contributing factors which make to change TMJ symptoms in orthognathic patients. But its amount seems to be low significance. Increase or decrease of posterior ramal height have influence on the change of TMJ symptoms.
김진권,강신형,Kim, Jin-Kwon,Kang, Shin-Hyoung 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.1
Easy measurement method of orthogonal triple-sensor hot-wire anemometer is developed. Advantages of the new method is that it does not require either the exact orthogonality of the installed wires which cannot be kept during the probe manufacture and repair, nor the knowledge of the wire installation angles and the yaw and pitch coefficient of the wires. The new method introduced yaw and pitch calibration coefficients which are designed to increase monotonically with yaw and pitch angles. So the resulting calibration network is simple to recognize compared with that of the previously suggested calibration method. Verification experiments showed good accuracy and independency of the directional calibration on velocity.
김진권,강신형,Kim, Jin-Kwon,Kang, Shin-Hyoung 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.1
Performance and flow characteristics of a small forward swept propeller fan for home refrigerators are studied experimentally. An unusual discontinuity is observed in the performance curve of the fan. Mean flow fields measured with as-hole Pitot probe reveal that the flow is axial at the high flow rate and radial at the low flow rate. The flow structure changes abruptly across the discontinuity. Unsteady flow measurements with a set of hot-wire probes indicate that near the discontinuity a single-cell stall rotates at 40% speed of the fan speed, while away from the discontinuity the flow shows periodic variation corresponding to the blade passage frequency. Phase-lock averaged flow fields measured with a triple-sensor hot-wire probe show that there appears radially inward flow over the pressure side of the blade and the outward passage flow over the tip.
웨이블릿 변수화의 최적화를 통한 적응형 조기심실수축 검출 알고리즘
김진권,강대훈,이명호,Kim, Jin-Kwon,Kang, Dae-Hoon,Lee, Myoung-Ho 대한의용생체공학회 2009 의공학회지 Vol.30 No.4
The bio signals essentially have different characteristics in each person. And the main purpose of automatic diagnosis algorithm based on bio signals focuses on discriminating differences of abnormal state from personal differences. In this paper, we propose automatic ECG diagnosis algorithm which discriminates normal heart beats from premature ventricular contraction using optimization of wavelet parameterization to solve that problem. The proposed algorithm optimizes wavelet parameter to let energy of signal be concentrated on specific scale band. We can reduce the personal differences and consequently highlight the differences coming from arrhythmia via this process. The proposed algorithm using ELM as a classifier show high discrimination performance between normal beat and PVC. From the experimental results on MIT-BIH arrhythmia database the performances of the proposed algorithm are 98.1% in accuracy, 93.0% in sensitivity, 96.4% in positive predictivity, and 0.8% in false positive rate. This results are similar or higher then results of existing researches in spite of small human intervention.
뇌컴퓨터접속(BCI) 무경험자에 대한 EEG-BCI 알고리즘 성능평가
김진권,강대훈,이영범,정희교,이인수,박해대,김은주,이명호,Kim, Jin-Kwon,Kang, Dae-Hun,Lee, Young-Bum,Jung, Hee-Gyo,Lee, In-Su,Park, Hae-Dae,Kim, Eun-Ju,Lee, Myoung-Ho 대한의용생체공학회 2009 의공학회지 Vol.30 No.5
The Performance research about EEG-BCI algorithm in BCI-naive subjects is very important for evaluating the applicability to the public. We analyzed the result of the performance evaluation experiment about the EEG-BCI algorithm in BCI-naive subjects on three different aspects. The EEG-BCI algorithm used in this paper is composed of the common spatial pattern(CSP) and the least square linear classifier. CSP is used for obtaining the characteristic of event related desynchronization, and the least square linear classifier classifies the motor imagery EEG data of the left hand or right hand. The performance evaluation experiments about EEG-BCI algorithm is conducted for 40 men and women whose age are 23.87${\pm}$2.47. The performance evaluation about EEG-BCI algorithm in BCI-naive subjects is analyzed in terms of the accuracy, the relation between the information transfer rate and the accuracy, and the performance changes when the different types of cue were used in the training session and testing session. On the result of experiment, BCI-naive group has about 20% subjects whose accuracy exceed 0.7. And this results of the accuracy were not effected significantly by the types of cue. The Information transfer rate is in the inverse proportion to the accuracy. And the accuracy shows the severe deterioration when the motor imagery is less then 2 seconds.
항만터미널운영자의 권리에 관한 고찰;대법원 2007.4.27.선고 2007다4943 판결 평석
김진권,Kim, Jin-Kwon 한국항해항만학회 2008 한국항해항만학회지 Vol.32 No.1
선박의 대형화 및 해상사업의 기업화 등에 따라 해상운송에 있어 화물의 하역, 보관 등의 전문적인 부분을 담당하고 있는 항만하역업자, 항만터미널운영자, 창고업자 등 독립계약자의 역할은 점점 증대되어 가고 있는 추세이다. 하지만 국제해상운송은 해상운송인과 화주를 중심으로 체결한 운송계약을 중심으로 이루어져 왔으므로, 영국 보통법상의 직접계약관계의 원칙에 의해 계약당사자가 아닌 자는 계약상의 이익을 원용할 수 없다는 입장을 유지하여 왔다. 이에 대해 이를 완화하고자 하는 다양한 방안이 적용되고 있으며, '히말라야약관'도 그러한 방안중의 하나이다. 본 논문은 최근 대법원판결을 통해 우리나라 법원의 히말라야약관의 유효성 인정에 대한 내용을 재검토하고 독립계약자, 특히 항만터미널운영자의 운송계약상 제3자의 권리인정에 관한 문제에 대한 각국의 경향에 대해 살펴본다. According to the trend of a large-sized vessel and a industrial carrier, the role of the independent contractors such as transport terminal operators, stevedores and warehousemen is increasing the base of cargo distribution that include the function of storage, warehousing, loading, unloading, trimming, dunnaging and lashing. But the common law doctrine of privity of contract has been a perennial source of difficulty for litigants seeking to enforce rights and obligations arising under a bill of lading contract. When carriage contract is negotiated, the concerned parties will be aware that some portion of obligations arising from the contract will be performed by the independent contractors engaged to carry out a particular function. It is reasonable for the independent contractors to be allowed the benefit of the carrier under the contract of carriage. As a part of the alleviating measures for the liability of independent contractors has been allowed various schemes, specially including 'Himalaya Clause'. Therefore, this study performed the validity of 'Himalaya Clause' by means of a recent judicial precedent by the Supreme Court and analyzed the rights of third parties, specially transport terminal operators, under the contract of carriage.
김진권(Jin-Kwon Kim),김상열(Sang-Yeol Kim) 한국해사법학회 2010 해사법연구 Vol.22 No.3
세계 선진경제국들은 지속 성장 가능한 물류체계 형성을 위해 물류와 환경을 조화시킨 환경친화적, 안전 지향적인 수송수단인 연안해운을 재평가하고 국가물류체계에서 그 역할을 증가시키고 있는 실정이며, 우리나라 연안해운도 2009년 기준 연간 약 118백만톤을 수송하고 있는 중요한 운송수단중의 하나이다. 이러한 연안해운의 활성화를 위하여 현행 우리나라 내항화물운송사업과 관련하여 제기되고 있는 각종 민원을 검토하고 입법목적을 달성시키기 위한 방안을 검토할 필요성이 있다. 특히 법 시행의 관점에서 해운법 및 관련 법령이 가지고 있는 문제점의 검토를 통하여 연안해운 발전방향 및 개선방안을 도출해 볼 필요성이 있다. 이에 이 논문에서는 현행 내항화물운송사업의 법제와 관련된 사안에 대한 검토하여 향후 내항화물운송사업의 합리성 확보에 도움이 되고자 한다. Most developed countries have revaluated the importance of cabotage in terms of the sustainable growth in logistics field with balance of logistics and environment by eco-friendly and safety-oriented system. The importance of cabotage has been increased in Korea and approximately 118 million tons transported in 2009. Since the civil complaints have raised about the current coastal freight transportation, there is a need for reviewing problems related to the marine transportation act and relevant maritime law to invigorate the cabotage. Thus, this study will examine the current law related to coastal cargo transportation business to secure the rationality for the prospective future.