물간법으로 제조된 부세굴비의 품질특성

최홍준,박시훈,이재준 한국지역사회생활과학회 2024 한국지역사회생활과학회지 Vol.35 No.2

This study measured the changes in moisture content, salinity, and sensory test of Larimichthys crocea (L. crocea) Gulbi manufactured by the brine soaking method, that is, by salting it with 10% salt water and drying it for 5 weeks. In addition, we compared the quality characteristics of L. crocea Gulbi prepared using the brine soaking method and the dry salting method. After 12 hours of salting with 10% brine prepared using sea salt, the moisture content of L. crocea Gulbi measured before and after salting was 76.84 ± 0.32% and 75.47 ± 0.16%, respectively, and the salinity was 1.28 ± 0.02% and 0.30 ± 0.01%, respectively. After the fifth week of drying, the salinity of L. crocea Gulbi was 2.75 ± 0.01% and the moisture content was 57.01 ± 0.59%. The moisture content of L. crocea Gulbi decreased as the drying period increased, and salinity increased. The weight of L. crocea Gulbi decreased by about 35% after drying. The sensory evaluation according to the drying period showed that the taste, aroma, texture, appearance, and overall preference increased in proportion to the drying period. The salinity of L. crocea Gulbi prepared using the brine soaking method was lower and the moisture content and pH value was higher than that of L. crocea Gulbi prepared using the dry salting method. The acid value, peroxide value, and volatile basic nitrogen content were lower in L. crocea Gulbi prepared using the brine soaking method compared to that prepared using the dry salting method. It was also found that the taste, aroma, texture, appearance, and overall preference of L. crocea Gulbi manufactured using the brine soaking method were all higher than that of the L. crocea Gulbi manufactured using the dry salting method. These results show that the brine soaking method for preparing L. crocea Gulbi may be useful in reducing the degree of lipid peroxidation and increasing the sensory quality characteristics during processing.

광중합 수지를 이용한 내열성 우수한 UV 경화형 아크릴 점착제의 제조

최홍준,김장순 한국고분자학회 2013 한국고분자학회 학술대회 연구논문 초록집 Vol.2013 No.10

The Effectiveness of Plantar Aponeurosis Release for the Limitation in First Metatarsophalangeal Joint Extension after Hallux Valgus Surgery

최홍준,김대욱,강영훈,박종호,손찬모,Choi, Hong-Joon,Kim, Dae-Wook,Kang, Yeong-Hun,Park, Jong-Ho,Son, Chan-Mo The Korean Foot and Ankle Society 2017 대한족부족관절학회지 Vol.21 No.2

Purpose: Stiffness in the first metatarsophalangeal joint after surgery for hallux valgus has been reported. The goal of this study was to test the efficacy of releasing plantar aponeurosis for improving the range of extension in the first metatarsophalangeal joint that was limited after hallux valgus surgery. Materials and Methods: Thirteen patients (1 man, 12 women [17 feet]; median age, 54.4 years; range, 44~69 years) with limited first metatarsophalangeal joint extension after hallux valgus surgery, who underwent an additional procedure of plantar aponeurosis release between March 2015 and August 2015, were included. Subsequently, the passive range of extension in the first metatarsophalangeal joint was evaluated via knee extension and flexion positions. Hallux valgus angle, inter-metatarsal angle, distal metatarsal articular angle, and talo-first metatarsal angle were measured on weightbearing dorsoplantar and lateral radiographs of the foot preoperatively. Results: The mean range of extension for the first metatarsophalangeal joint improved significantly, from $2.5^{\circ}$ to $40.9^{\circ}$ in the knee extension position (p<0.00). The mean extension range for the first metatarsophalangeal joint also improved, from $18.2^{\circ}$ to $43.2^{\circ}$ in the knee flexion position (p<0.00). In all patients, congruence of the first metatarsophalangeal joint was recovered. Conclusion: Plantar aponeurosis release is an effective additional procedure for improving the extension range of the first metatarsophalangeal joint after hallux valgus surgery.

성인의 유연성 편평족에 대한 종골 연장술

최홍준,조재호,왕배건,Choi, Hong Joon,Cho, Jae Ho,Wang, Bae Gun 대한족부족관절학회 2013 대한족부족관절학회지 Vol.17 No.2

Purpose: Calcaneal lengthening osteotomy is one option for the treatment of symptomatic flexible flatfoot in adults. The aim of the study was to evaluate the short term clinical and radiologic results and analyze its complications. Materials and Methods: Twelve feet who had undergone calcaneal lengthening osteotomy without flexor digitorum longus transfer between December 2009 and July 2011 were included. The mean age was 40.6 years (23~75 years). The mean followup was 17.3 months (13~25 months). Clinical outcome were assessed using American Orthopadics Foot ans Ankle Society (AOFAS) score and visual analogue scale (VAS) for pain. Four radiologic parameters were measured from weightbearing radiographs to evaluate the difference between preoperatively and postoperatively measures. To analyze the complications, calcaneocuboid joint subluxation and degenerative change were measured postoperatively. Results: The mean AOFAS score improved from 55.3 points preoperatively to 82.2 points at lastest follow-up (p=0.000). The mean VAS improved from 6.3 points preoperatively to 3.2 points postoperatively (p=0.002).All radiologic parameters, the mean talonavicular coverage angle on AP view, the mean talo-1st metatarsal angle on AP and lateral view and the mean calcaneal pitch angle, significantly improved after calcaneal lengthening osteotomy. Nine feets (75%) were shown the degenerative change in the calcaneocuboid joint at latest follow-up radiographs. Conclusion: Calcaneal lengthening osteotomy for the symptomatic flexible flatfoot in adults produced significant improvement in clinical and radiologic parameters, but calcaneocuboid joint osteoarthritis occurred postoperatively remained a major problem.

Preparation and characterization of electron beam-cured pressure-sensitive adhesives

최홍준,박정진,고환순,강현욱,육지호 한국고분자학회 2011 한국고분자학회 학술대회 연구논문 초록집 Vol.2011 No.1

GPU 코어에 할당된 CTA 수에 따른 GPGPU 구조의 성능 및 전력 효율성 분석

최홍준,손동오,김종면,김철홍 한국차세대컴퓨팅학회 2014 한국차세대컴퓨팅학회 논문지 Vol.10 No.6

최근에는 컴퓨터 시스템의 성능을 향상시키기 위하여 많은 연구자들이 그래픽스 관련 작업을 위해 개발된 프로세서 인 GPU를 활용하는 GPGPU에 관심을 가지고 있다. GPGPU 구조에서 성능을 향상시키기 위해서는 병렬성 증가를 통하여 연산자원을 가능한 많이 활용해야 한다. 이를 위해서, GPGPU는 수천개의 스레드들을 포함한 스레드 블록, 즉 CTA를 GPU 코어인 스트리밍 멀티프로세서에 할당한다. CTA를 스트리밍 멀티프로세서에 할당하는 CTA 스케 쥴링 기법은 GPGPU 컴퓨팅 시스템의 성능에 상당한 영향을 준다. 이상적인 CTA 스케쥴링 기법은 수행되는 벤치 마크 프로그램의 특성을 반영하여 CTA들을 적절하게 각 스트리밍 멀티프로세에 할당시킴으로써 GPGPU 성능을 향 상시킬 것이다. 하지만, 현재의 CTA 스케쥴링 기법은 GPGPU의 병렬성과 자원활용률을 증가시키기 위하여 가능한 많은 CTA를 스트리밍 멀티프로세서에 할당하고 있다. 그러므로 본 논문에서는 스트리밍 멀티프로세서에 할당되는 CTA의 숫자에 따른 GPGPU 컴퓨팅 시스템의 성능을 평가해보고자 한다. GPGPU 컴퓨팅 시스템에서 소모되는 전 력의 상당 부분을 GPGPU가 차지하고 있기 때문에 우수한 CTA 스케쥴링 기법 개발을 위해서는 GPGPU의 성능과 더불어 전력 소모량 또한 고려해야 한다. 이와 같은 이유로 본 논문에서는 GPUWattch 시뮬레이터를 사용하여 소모 전력 또한 정량적으로 분석한다. 실험결과는 스트리밍 멀티프로세에 가능한 많은 CTA를 할당하는 현재의 CTA 스케 쥴링 기법이 항상 우수한 GPGPU의 성능을 보장하지 않는다는 것을 보여준다. 우리는 실험 결과를 활용하여 향후에 응용프로그램의 특성을 고려한 고성능, 저전력의 CTA 스케쥴링 기법을 개발하고자 한다. 본 연구의 분석결과는 GPGPU 구조에 효과적인 CTA 스케쥴링 기법을 개발하는 방향 설정에 필요한 정보로 활용될 것으로 기대된다. Recently, many research groups have focus on GPGPU by exploiting GPU, which is developed to execute graphics-related operations, has been focused in order to improve performance of computing systems. GPGPU architecture fully utilizes computational resources by increasing parallelism to improve performance. To achieve this, in GPGPU, the thousands of threads are grouped into thread blocks, called CTA (Cooperative Thread Arrarys) and the CTA is assigned to one GPU core, called SM (Streaming Multiprocessors). The CTA scheduling scheme to assign CTAs to SMs has influence on overall GPGPU performance, significantly. Ideal CTA scheduling scheme, which consider the characteristics of benchmarks, can assign CTAs to each SM properly, leading to performance improvement. However, current CTA scheduling scheme assigns the maximum number of CTAs to each SM, so as to improve parallelism and resource utilization. Therefore, this paper analyzes the GPGPU performance according to various number of CTAs assigned to SMs. Since GPGPU accounts for a considerable portion of total power consumption on computing system, power efficiency as well as performance should be considered to enhance the competitiveness of computing systems when designing CTA scheduling scheme. For this reason, this paper also analyzes the power consumption on GPGPU by using GPUWattch simulator. Simulation results show that current CTA scheduling scheme, which assigns the maximum number of CTAs to each SM, does not guarantee better performance. At future work, we will investigate high performance and low power CTA scheduling scheme considering the characteristics of workload. This results can provide the guideline to research the efficient CTA scheduling scheme for GPGPU.

[Letter 1] ‘산타브로스’ 친구들과 즐기는 등산

최홍준 샘터사 2022 월간 샘터 Vol.623 No.-

무지 외반증에 동반된 중족 설상 관절염의 방사선학적 특징과 수술적 치료 결과

최홍준,Choi, Hong-Joon 대한족부족관절학회 2013 대한족부족관절학회지 Vol.17 No.2

Purpose: To evaluate the radiographic characteristics of the tarsometatarsal osteoarthritis with hallux valgus deformity and report the clinical results of the operative treatment. Materials and Methods: This is a retrospective study of 20 patients, 22 feet who had been operated for non-traumatic tarsometatarsal osteoarthritis with hallux valgus (TMT group) and control group of hallux valgus patients without tarsometatarsal osteoarthritis (26 patients, 28 feet) from April 2004 to July 2011. Radiographic characteristics were compared between the groups, using hallux valgus angle, $1^{st}-2^{nd}$ intermetatarsal angle, metatarsal length ratio, metatarsus adductus angle, talonavicular coverage angle, talus-$1^{st}$ metatarsal angle, calcaneal pitch angle and medial cuneiform height. Pre- and postoperative difference of $1^{st}-2^{nd}$ metatarsal declination angle and distance between the $1^{st}-2^{nd}$ metatarsal head were evaluated. The clinical results were evaluated by American Orthopaedics Foot and Ankle Society (AOFAS) midfoot scale and visual analogue scale (VAS). Results: Metatarsal length ratio was significantly larger in TMT group (p<0.001). Metatarsus adductus angle, talonavicular coverage angle, talus-$1^{st}$ metatarsal angle on lateral radiograph, calcaneal pitch angle and medial cuneiform height were different from control group (p<0.001, p<0.001, p=0.001, p=0.010, p=0.006). Postoperative declination of the $2^{nd}$ metatarsal and distance between the $1^{st}-2^{nd}$ metatarsal head were increased (p=0.009, p=0.001). The AOFAS and VAS score were improved (p<0.001, p<0.001). Conclusion: Non-traumatic osteoarthritis of the tarsometatarsal joints seems to be associated with long 2nd metatarsal length, metatarsus adductus and flatfoot deformity. Spur excision may be successful to relieve symptoms when the arthritis was diagnosed in early stage.

Revision Surgery for Recurrent Pain after Excision of the Accessory Navicular and Relocation of the Tibialis Posterior Tendon

최홍준,이우천 대한정형외과학회 2017 Clinics in Orthopedic Surgery Vol.9 No.2

Background: The results of operative treatments for symptomatic accessory navicular are debatable. In some cases, recurrent pain may develop after the Kidner procedure. The purpose of this study is to review the reasons for recurrent pain after the Kidner procedure and to suggest possible options for revision surgery. Methods: We reviewed the clinical and radiological outcomes in 9 patients who underwent revision surgery for recurrent pain after the Kidner procedure. During the revision surgery, the tibialis posterior tendon was reattached to the navicular either by advancing the tendon in 4 patients or by lengthening the tendon in another 4 patients. In the other 1 patient, the flexor digitorum longus tendon was transferred. Surgeries for the accompanying deformities were performed simultaneously in all patients. The results were evaluated using the American Orthopaedic Foot and Ankle Society ankle-hindfoot score and a visual analog scale. The mean follow-up was 2.3 years (range, 1 to 5 years). Results: The mean American Orthopedic Foot and Ankle Society ankle-hindfoot score improved from 71.25 to 81.50 in the advancement group, and 71.75 to 90.00 in the lengthening group. The mean visual analog scale improved from 7.75 to 4.25 in the advancement group and from 7.50 to 1.75 in the lengthening group. Conclusions: Recurrent pain after the Kidner procedure was associated with pes planovalgus or hindfoot valgus deformity. In revision surgery, correction of the associated deformities and reattachment of the tibialis posterior tendon after lengthening may need to be considered.

거골 골연골 병변의 자가 골연골 이식술의 임상 결과

최홍준,문정석,이우천,고한석,Choi, Hong-Joon,Moon, Jeong-Seok,Lee, Woo-Chun,Ko, Han-Seok 대한족부족관절학회 2007 대한족부족관절학회지 Vol.11 No.2

Purpose: To evaluate clinical results of autologous osteochondral graft in osteochondral lesions of the talus. Materials and Methods: Twenty feet in twenty patients underwent osteochondral autologous transfer in the osteochondral lesions of the talus. Sixteen were men and four were women. The mean age was 40.8 years old. The mean follow up was 2 years 9 months. Eighteen cases were medial, one case was lateral and one case was both, respectively. The average duration of symptom was 4 years 3 months. AOFAS ankle/hindfoot score (AOFAS score), visual analogue scale (VAS), Lysholm knee score were evaluated preoperatively and at the final follow up. Results: Postoperative AOFAS score was 87.3 (range, 69-100), which was significantly improved from preoperative AOFAS score of 62.0 (p=0.000). Postoperative VAS was 2.9 (range, 0-7), which was significantly improved from preoperative VAS of 7.5 (p=0.000). Postoperative Lysholm knee score was 92.4 (range, 80-100). All osteotomy of medial malleolus was united by the 4th month after surgery. Postoperative VAS was conversely correlated with the follow up period (p=0.024). There was no complications associated with surgery. Conclusion: Autologous osteochondral grafts in osteochondral lesion of the talus demonstrated excellent results with a short-term follow up.