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커버곡 검색 정확도 향상을 위한 적합도 기반 크로마그램 쌍별 유사도
서진수 한국음향학회 2024 韓國音響學會誌 Vol.43 No.2
Computing music similarity is an indispensable component in developing music search service. This paper proposes a relevance weight of each chromagram vector for cover song identification in computing a music similarity function in order to boost identification accuracy. We derive a music similarity function using the relevance weight based on the probabilistic relevance model, where higher relevance weights are assigned to less frequently-occurring discriminant chromagram vectors while lower weights to more frequently-occurring ones. Experimental results performed on two cover music datasets show that the proposed music similarity improves the cover song identification performance.
서진수,유창동 대한전자공학회 2003 電子工學會論文誌-CI (Computer and Information) Vol.40 No.3
대표적인 비대칭 워터마킹 방법의 하나의 파워스펙트럼을 이용한 비대칭 워터마킹 방법의 성능을 분석하였다. 파워스펙트럼 도메인의 특성 분석을 통해 간단하면서도 성능 분석에 용이한 상관 검출기를 활용할 수 있음을 보였다. 제안된 상관 검출기를 이용하여 정보량을 늘려가면서 비트 검출 오류율 (bit error rate)을 구하였다. 실험 및 이론 분석 결과는 거의 일치하였으며, 파워스펙트럼 도메인 비대칭 워터마킹 방법은 삽입되는 데이터양이 증가할수록 급격히 그 성능이 나빠지는 것을 확인할 수 있었다. This paper proposes a novel method to detect Furon's asymmetric watermark by using a correlation detector that is mathematically tractable and simple. The performance of the proposed method is tested under various conditions. The experimental results matched the theoretical results well, showing that the correlation detector can indeed be used for the detection of asymmetric watermark. The proposed detector is aplied to both single and multiple bit embedded watermark. Bit error rate (BER), obtained from the experiment, was compared to the one obtained from the theory. As the embedded information increases, the BER of the Furon's asymmetric watermarking method also increases rapidly.
전족부에 발생한 골격외 점액양 연골육종 - 1례 보고 -
서진수,조진호,김진환,박성혜,Suh, Jin-Soo,Cho, Jin-Ho,Kim, Jin-Hwan,Park, Seong-Hye 대한족부족관절학회 2002 대한족부족관절학회지 Vol.6 No.1
Extraskeletal myxoid chondrosarcoma is an unusual soft tissue sarcoma with distinctive histologic features. It once was called chordoid sarcoma because it resembles chordoma histologically. The lesion has been shown to be of chondroblastic origin. This lesion shown to have ultrastructural and molecular features distinct from that of myxoid chondrosarcoma of bone. We report a case of extraskeletal myxoid chondrosarcoma in forefoot.
서진수,김진환,주석규,Suh, Jin-Soo,Kim, Jin-Hwan,Choo, Suk-Gyu 대한족부족관절학회 2002 대한족부족관절학회지 Vol.6 No.2
Ossification of the Achilles tendon is a rare condition to be distinguished from the more frequently occuring tendon calcification. It is characterized by the presence of an ossific mass contained within the fibrocartilaginous substance of the tendon and is usually associated with prior surgery or trauma to the tendon. We treated a 13 year old girl with ossification of the Achilles tendon after sprain-like injury. We excised it one year later and the microscopic finding of the extirpated bony mass revealed fully maturated lamellar bone.
재발된 신경내 결절종에 의한 비골신경마비 - 1례 보고 -
서진수,Suh, Jin-Soo 대한족부족관절학회 2002 대한족부족관절학회지 Vol.6 No.2
A case of a peroneal nerve palsy caused by repeatedly recurred intraneural ganglion cyst is presented. A 19 year old male suffered from tingling sensation on the foot dorsum more than one year and underwent two times of mass excision and nerve palsy was recorvered. But it was recurred once more after 10 months after the second excision. The mass was located in the fibro-osseous tunnel against the fibular neck and the origin of the peroneus longus. The third complete excision was done and full recovery was obtained in 6 months.
서진수,주석규,정현욱,이우천,Seo, Jin-Soo,Choo, Suk-Kyu,Chung, Hyun-Wook,Lee, Woo-Chun 대한족부족관절학회 2003 대한족부족관절학회지 Vol.7 No.1
Purpose: We evaluate the clinical, radiologic and pathologic features of giant cell tumor of tendon sheath (GCTTS) in the foot Materials and Methods: Twelve cases of GCTTS excised from foot region, at our hospital from 1999 to 2002, were analyzed. The mean duration of follow up was 19 months. The age and sex of the patient, location and size of the lesion, symptom as well as radiologic findings were evaluated. Results: The most common symptom was painless mass in 7 patients. Three patients had pain sympton and 2 patients had tenderness. The mean duration from identification of the mass to excision was 14 months. Seven cases were located in the forefoot, most commonly in the big toe with 4 cases, 2 cases in the midfoot and 3 cases in the hindfoot. The average diameter along the long axis was 2.8cm. Conclusion: GCTTS in the foot was more common in the big toe and also plantar side same as in the hand. But bony erosion and pain were more frequent than in the hand.