변형을 동반한 족근 관절 관절염에 대한 관절 고정술 후 결과

박종혁,문승진,이주홍,Park, Jong-Hyuk,Moon, Seung-Jin,Lee, Ju-Hong 대한족부족관절학회 2005 대한족부족관절학회지 Vol.9 No.1

중등도 이상의 변형을 가진 족근 관절 관절염에 대해 관혈적 관절 고정술은 양호한 결과를 보였으며 경비골 도달법에 의한 관절 고정술이 이상적인 족근 관절의 고정 위치를 얻는데 보다 용이하였다. Purpose: We reviewed the results of ankle arthritis with advanced deformity treated with open arthrodesis. Materials and Methods: Seventeen patients who had painful ankle arthritis with advanced deformity underwent open arthrodesis using chevron osteotomy or transfibular approach and were followed for an average of 4.2 years (range, 1.5 to 9.7 years). The average age was 51.4 years and the most common cause was traumatic arthritis (13 patients). Postoperative outcome was evaluated using Mazur's grading system for ankle function. we also checked time to union, patient satisfaction, complications, position of arthrodesis and degenerative changes of adjacent joints. Results: Clinical score was improved to 76.4 points from 46.7 points. Average time to union was 4.3 months and the rate of satisfaction was 88%. Complications included 1 nonunion, 2 malunion, 1 superficial infection and 1 combined delayed union and malunion. There were 14 cases within $5^{\circ}$ valgus in frontal plane and 13 cases within neutral to $5^{\circ}$ dorsiflexion in sagittal plane. 3 cases in chevron osteotomy revealed valgus and plantarflexed position over $5^{\circ}$. Degenerative changes of adjacent joints was seen in 2 patients. Conclusion: Open arthrodesis for ankle arthritis with advanced deformity shows favorable clinical outcome. Transfibular approach shows more consistent results than chevron soteotomy for desired position of arthrodesis.

종업원의 주식보상시스템이 기업성과에 미치는 영향

박종혁,Park, Jong-Hyuk 대한경영정보학회 2009 경영과 정보연구 Vol.28 No.1

주식보상시스템의 도입으로 기업은 최소의 비용으로 유능한 인재를 확보함으로써 기업의 경쟁력을 강화할 수 있고, 특히 첨단산업과 같은 성장산업에서 고급인력을 양성하고 기술력을 확보함으로써 기업의 대내외적인 경쟁력을 확보할 수 있게 된다. 또한 종업원의 동기를 부여함으로써 임직원의 잠재적인 주주화를 통해 주인의식고취 및 책임경영을 실현 시킨다. 본 연구는 주식보상시스템의 도입에 따른 회계변수평가모형이 기업가치를 평가하는데 유용한지를 검증하였으며 현행 기업회계기준에 의해 작성된 주식매입선택권이기업 지식자산의 형태로 자산화되었을 경우 기업가치 평가를 검증하였다. 연구 결과 회계변수들은 기업가치를 평가하는데 유용한 측정치들이었으나 스톡옵션 부여와 관련된 주식매입선택권의 경우 현행 기업회계기준 방법에 의하였을 경우에는 주식매입선택권과 주식보상비용 모두 유의하지 않은 것으로 나타났다. 추가적으로 자산화 된 주식매입선택권의 경우 유의한 양(+)의 값으로서 기업 가치를 평가하는데 유의한 결과임을 지적하였다. 이는 투자자들이 기업 가치를 평가하는데 있어서 주식매입선택권을 현행 기업회계기준의 방법으로 처리하는 것보다 자산화 시킨 후 스톡옵션의 효익 지속기간 동안 상각하는 것이 기업가치를 평가하는데 더 유용한 방법이라는 점을 가지고 있다는 것을 나타낸다. In this study, I compare the ability of alternative accounting method for employee stock option to reflect firm value using the Ohlson's(1995) valuation model for 200 firms. The each methods, I compare are employee stock option expense recognition based on the K-GAAP disclosures, and asset recognition at the grant date based on the SFAS No. 123 Exposure Draft: Accounting for stock-based compensation. The model include: (1) a model that uses reported earnings, equity book value, and compensation expense based on the K-GAAP disclosures; (2) a model that uses pro-forma earnings, equity book value and adds a measure of the unrecognized asset arising form granting of employee stock options. Finding form estimating equations that the K-GAAP method for calculating compensation has no explanatory power, and the SFAS No.123 Draft Exposure method for arising asset and fair value compensation better captures than market's perception of the economic impact of stock options on firm values. However, the correlation of employee stock option compensation expense is positive. These results suggest that incentive benefits derived from employee stock option plans outweigh the cost associated with plan. In addition, I couldn't find evidence that company in KOSDAQ that have high growth potential benefit more from employee stock option plan compared to lager, more mature firm in SEC.

자매에서 발생한 전신성 홍반성 루푸스 2예

박종혁,조대영,김성진,이승철,원영호,전인기 ( Jong Hyuk Park,Dae Young Cho,Seong Jin Kim,Seung Chul Lee,Young Ho Won,Inn Ki Chun ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.6

The pathogenesis of systemic lupus erythematosus (SLE) appears to be multifactorial, including both genetic and environmental influences. The genetic factor of SLE is well known to have an important role in the pathogenesis based on epidemiological analysis and studies of monozygotic twins. The disease occur. more commonly in first degree relatives and may affect multiple persons in single families. We report a family in which two sisters developed systernic lupus erythematosus. The clinical, laboratory and histopat,hological findings showed characteristic features of systemic lupus erythematosus. HLA testing revealed that the two sisters shared common HLA-DR15(2)and HLA-A2. (Korean J Dermatol 1997;35(6): 1220-1224)

악성 연부조직 종양의 광범위 절제 후 전외측 대퇴부 유리 피판을 이용한 재건술

박종혁,이형석,김정렬,Park, Jong-Hyuk,Lee, Hyung-Seok,Kim, Jung-Ryul 대한근골격종양학회 2008 대한골관절종양학회지 Vol.14 No.2

서론: 악성 연부 조직의 광범위 절제술 후 발생한 연부 조직 결손에 대해 전외측 대퇴부 유리 피판 이식술로 재건술을 시행한 7예에 대해서 치료 결과 및 그 유용성에 대해 알아 보고자 한다. 대상 및 방법: 2003년 1월부터 2007년 6월까지 연부조직 악성 종양으로 광범위 절제술 후 전외측 대퇴부 유리 피판을 이용한 재건술을 시행 받은 7예를 대상으로 하였다. 연구 방법은 임상 기록의 검토를 통해 후향적으로 시행하였으며, 종양의 종류, 크기, 종양의 절제연, 종양 절제 후 연부 조직 결손의 크기, 피판의 성공여부, 수술 시간, 합병증 등을 조사하였다. 결과: 악성 연부 조직 종양은 활막 육종이 3예, 악성 섬유성 조직구종이 2예, 평활근 육종이 1예, 섬유육종이 1예였다. 종양의 크기는 $3{\times}5\;cm$부터 $7{\times}8\;cm$로 다양하였고, 모든 예에서 광범위 절제연을 얻을 수 있었다. 종양 절제 후 피부 연부 조직 결손의 크기는 $6{\times}8\;cm$부터 $15{\times}10\;cm$였고, 평균 수술 시간은 3.6시간이었다. 모든 예에서 이식된 피판은 생존하였다. 결론: 악성 연부 조직의 수술적 치료에 있어 전외측 대퇴부 유리 피판술은 종양의 광범위한 절제술 후에도 적절한 크기와 길이의 혈관경을 확보할 수 있으며, 공여부의 합병증을 최소화하며, 미용적으로 우수하여 종양 절제 후 연부조직의 재건에 유용한 술식으로 사료된다. Purpose: To present our experience with soft tissue reconstruction using anterolateral thigh free flap after resection of soft tissue sarcoma. Materials and Methods: Between January of 2003 and June of 2007, we treated 7 patients with soft tissue reconstruction using anterolateral thigh free flap after wide resection for soft tissue sarcoma. We retrospectively analyzed type and size of tumors, resection margin, size of defect after resection, time of operation, flap survival and complication. Results: The type of sarcoma was 3 synovial sarcoma, 2 malignant fibrous histiocytoma, 1 leimyosarcoma and 1 fibrosarcoma. The size of tumor varied from $3{\times}5\;cm$ to $7{\times}8\;cm$. The resection margins of tumors were negative in all cases. The size of soft tissue defect after resection varied from $6{\times}8\;cm$ to $15{\times}10\;cm$. The mean time of operation was 3.6 hours. All flaps were survived. Conclusion: Anterolateral thigh free flap appear to be ideal for reconstruction after wide resection of soft tissue sarcoma.

Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 DRM 설계 및 구현

박종혁,이상진,홍인화,안태원,이덕규,Park Jong-Hyuk,Lee Sang-Jin,Hong In-Hwa,Ahn Tae-Won,Lee Deok-Gyu 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.3C

본 논문에서는 Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 콘텐츠 보호 및 관리 시스템(UHSMS-DRM: Ubi-Home Smart Multimedia Streaming-Digital Right Management)을 설계 및 구현하였다. 제안 시스템은 Ubi-Home에서 디지털 콘텐츠의 저작권 보호 및 관리를 위한 유연한 유통 플랫폼을 제공하며, PC, STB, PDA, Portable device 등 다양한 디바이스의 인증을 통해 정당한 사용자에게 Multimedia Steaming Service를 제공한다. 그리고, 도메인 인증개념을 적용하여 Ubi-Home의 모든 디바이스에 대한 라이센스 관리의 효율성을 높인다. 또한, Ubi-Home에서 intelligent Service를 위해 사용자의 위치를 인지하기 위한 알고리즘을 제안 및 적용한다. In this paper, we design and implement the UHSNS-DRM(Ubi-Home Smart Multimedia Streaming-Digital Right Management) in Ubi-Home. The proposed system support flexible distribution platform for digital content copyright protection and management in Ubi-Home. This system also can provide multimedia streaming service to authorized users who are using PC, STB, PDA, and Portable Device, etc. Furthermore, we adopt concept of domain authentication and it help to improve the efficiency of license management for all devices in Ubi-Home. We design user's location recognition algorithm in order to provide intelligent services. Of course, this algorithm is applied for the proposed system. Start after striking space key 2 times.

정상안압녹내장의 시야손상 진행과 각막생체역학인자의 관련성

박종혁,최규룡.Jong Hyuk Park. MD. Kyu-Ryong Choi. MD 대한안과학회 2013 대한안과학회지 Vol.54 No.11

Purpose: To evaluate the association between corneal biomechanical properties and progression of visual field loss in normal tension glaucoma. Methods: This study enrolled 73 eyes of 73 patients with normal tension glaucoma who were undergoing medical treatment, and classified them into progressing and nonprogressing groups by visual field trend analysis. The corneal biomechanical properties measured by the Ocular Response Analyzer (ORA; Reichert Instruments, Depew, NY, USA), central corneal thickness, and Goldmann applanation tonometry were comparatively analyzed between the 2 groups. Results: Twenty-six eyes reached a progression endpoint. The prevalence of hypertension was higher in the progressing group (42.3%, progressing, 17.0%, nonprogressing; p = 0.03). Progressing eyes had lower corneal hysteresis (9.1 ± 1.3 vs. 9.8 ± 1.5 mm Hg, p = 0.03) and lower corneal resistance factor (9.5 ± 1.5 vs. 10.4 ± 1.4 mm Hg, p = 0.01) compared with nonprogressing eyes. Upon multivariate analysis, the presence of hypertension (odds ratio [OR] = 3.46, p = 0.03) and corneal hysteresis (CH) (OR = 0.66 per mm Hg lower, p = 0.02) remained statistically significant. Conclusions: The CH measurement with ORA was significantly associated with risk of visual field progression in normal tension glaucoma. Eyes with lower CH had a greater risk of progression of visual field loss than those with higher CH. J Korean Ophthalmol Soc 2013;54(11):1757-1766

편평 사마귀에 대한 DNCB와 DPCP 면역요법의 치료 효과에 대한 비교 연구

박종혁,김성진,이승철,원영호,전인기 ( Jong Hyuk Park,Seong Jin Kim,Seung Chul Lee,Young Ho Won,Inn Ki Chun ) 대한피부과학회 1997 대한피부과학회지 Vol.35 No.6

This stuc1y was conducted to evaluate the therapeutic effect of immunotherapy on verruca plana. Forty-four patients with verruca plana were tried with dinitrochlorobenzene(DNCB) and diphenylcyclopropenone(DPCP) by topical application on the norinal uninvolved skin of the inner arms for sensitization and challenge. The lesions were challenged in weekly intervals after sensitization. The results obtained in this study are as follows. 1. Mean age of our patients was 20-year-old and sex ratio was about 1:2 (14 of male, 30 of female). 2. Tbe sites of the lesion weve face (60.9%), neck (7.2%), trunk (2.9%), arm (li3.0%), hand (11.6% ), leg (4.3% ). 3. Thirty two patients (72.7%) from 44 cases were completely cured after DNCB (81.3%) and DPCP (67%) treatment and iesions on younger patients showed a better response than those of of older patients(p<0.05). 4. There were no statistic relationship between duration of the lesions and therapeutic response. 5. Average challenge number after sensitization was 3.77 in DNCB, 2.26 in DPCP, respectively. 6. Sensitization rates in the cured patients were to treat verruca plana 94.7% (18/19) in DNCB, 76.9% (10/13) in DPCP, respectively. (Korean J Dermatol 1997;35(6): 1082-1087)

창의성 증진에 있어서 내.외재동기의 차별적 효과에 관한 연구

박종혁,김윤중,Park, Jong-Hyuk,Kim, Yoong-Joong 대한경영정보학회 2007 경영과 정보연구 Vol.20 No.-

This study explored how intrinsic and extrinsic motivation relates to achieving creativity at project work. We were interested in differences in how motivational factors relate to creativity. Using data from the 98 engineers and researchers employed by a variety of companies, principal components factor analysis with marimax rotation was performed on the data. We examined effects of the moderate variables the intrinsic and extrinsic motivation and creativity relationship. The results indicate of positive mental involvement, the time and the resource constraints relates positively to creativity in organizations and that the relationship is a simple linear one. These outcomes are significantly related to intrinsic motivation and the creativity. In additions, extrinsic motivation is related to less the creativity. Our survey findings are also consistent with other sources of knowledge on the topic. Our results suggest that there are two different role: mental involvement, time and resources constraints, both of which predict creativity, and external control and extrinsic motivations reduce to creativity.

전방십자인대 재건술 후 스포츠 활동 복귀

박종혁,이준모,배현경,임종한,이주홍,Park, Jong-Hyuk,Lee, Jun-Mo,Bae, Hyun-Kyung,Im, Jong-Han,Lee, Ju-Hong 대한정형외과스포츠의학회 2009 대한정형외과스포츠의학회지 Vol.8 No.2

목적: 전방 십자 인대 재건술을 시행한 환자에서 수상 전 스포츠 활동으로의 복귀 정도와 관여 인자를 알아보았다. 대상 및 방법: 2003년 9월부터 단일 다발 전방십자인대 재건술을 시행받은 109명의 환자 중 스포츠 손상으로 2년 이상 추시 가능한 43예를 대상으로 수상 전 스포츠 활동으로의 복귀 여부를 조사하였다. 평균 나이는 26세(17~45세)였고, 추시 기간은 평균 31.2 개월(24~53개월)이었다. 수술 전과 최종 추시에서의 임상적 결과는 Lysholm 점수, Tegner 활동 수준 척도, 객관적 및 주관적 International Knee Documentation Committee questionnaires (IKDC 평가표), KT-1000 관절계를 이용하여 평가하였다. 결과: 임상적 결과는 술 전에 비해 최종 추시에서 모두 유의하게 호전되었다(P<0.001). 43예 중 25예(58%)는 수상 전 운동으로 복귀하였으나 18예(42%)는 복귀에 실패하였다. 복귀에 실패한 환자에서 11예(61%)는 재부상에 대한 두려움, 나머지 7예(39%)는 불안정과 통증을 이유로 복귀하지 못하였다. ANOVA test상 세 환자 군의 Lysholm 점수, 주관적 IKDC 평가표, 및 KT-1000 검사에서 통계적으로 유의하였다(P<0.001). 그러나 수상 전 스포츠 활동으로 복귀한 군과 재부상에 대한 두려움 때문에 복귀하지 못한 두 군에서는 Lysholm점수와 KT-1000 검사 상 유의한 차이가 없음에도 불구하고 Tegner 활동 수준, 주관적 IKDC 평가표에서 유의한 차이를 보였다(P<0.001). 결론: 스포츠 손상으로 전방십자인대 재건술을 받은 환자들 중 약 25%에서 재손상에 대한 두려움으로 인해 수상 전 스포츠 활동으로 복귀하지 못했다. 전방십자인대 재건술의 성공적인 결과를 위해서는 재건술 술기 향상과 체계적인 재활 방법이 여전히 요구되지만 심리적인 요인에 대한 고려 역시 필요할 것으로 생각된다. Purpose: The purpose of this study was to determine how many of our patients who had had anterior cruciate ligament (ACL) reconstruction returned to their previous levels of sports and to identify why not doing so. Material and Methods: We evaluated 43 knees with a minimum of two years follow-up among whom undergoing 109 ACL reconstruction from September 2003. The mean age of patients was 26 years (17 to 45 years) Clinical results was evaluated according to the Lysholm Knee scores, Tegner activity score, subjective IKDC questionnaires, objective IKDC evaluation form and KT-1000 arthrometer. Results: The overall clinical results demonstrated significant improvement at the final follow-up comparing to preoperative data (P<0.05). Among 43 patients, 25 patients (58%) returned to their previous level of sports and 18 patients (42%) did not. Of whom, 11 patients (61%) were not able to return to sports due to fear to re-injury and 7 patients (39%) suffered from instability and pain. The differences in the Lysholm Scores, KT-1000 arthrometer and subjective IKDC in the 3 groups of patients by ANOVA test were found to be statistically significant (P<0.001). Although there is no difference in objective IKDC and KT-1000 arthrometer, the difference was observed in Tegner activities, subjective IKDC obtained by those who returned to sport and those who had fear to reinjury (P<0.001). Conclusion: This study showed that a quater of patients could not return to their previous level of sport after ACL reconstruction because of fear to reinjury. We thought that not only improving the technique of ACL reconstruction and systemic rehabilitation but also considering psychological factor of patients could allow more patients to return to the previous level of sports.

외안근에 발생한 고립형 근농양 1예

박종혁,전루민,Jong Hyuk Park,Roo Min Jun 대한안과학회 2014 대한안과학회지 Vol.55 No.4

Purpose: To report the case of an isolated abscess in an extraocular muscle. Case summary: We report a case of an isolated abscess in an extraocular muscle in a patient who was treated with systemic chemotherapy for precursor B lymphoblastic leukemia. A 54-year-old female who had undergone systemic chemotherapy for precursor B lymphoblastic leukemia presented with right ocular pain and limited eye movements. On ophthalmic examination, she had elevated intraocular pressure (IOP) and limited upward and downward gaze. MRI (magnetic resonance imaging) examination revealed an isolated abscess in right inferior rectus muscle. Although the patient was treated with empirical intravenous antibiotics and IOP-lowering agents, the size of the abscess increased, as confirmed by MRI findings. Therefore, we performed a pus drainage procedure by the transconjunctival approach. We were not able to find any residual abscess lesions on CT scans 3 months postoperatively. The patient's ocular pain disappeared and the limited eye movements improved significantly 6 months postoperatively. Conclusions: There have been no case reports of an isolated abscess in an extraocular muscle in Korea. For immunocompromised patients unresponsive to systemic empirical antibiotic treatment, an early pus drainage procedure by the transconjunctival approach may be a useful and effective therapeutic method in the management of an idiopathic isolated abscess in an extraocular muscle. J Korean Ophthalmol Soc 2014;55(4):616-622