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.

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

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.

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)

AIA 및 CMAA의 CM 분석을 통한 국내 CM 적용 시안

박종혁,박홍태,Park, Jong-Hyuk,Park, Hong-Tae 한국건축시공학회 2007 한국건축시공학회지 Vol.7 No.4

This study tries to provide concept on establishment of CM license basis, CM selection procedure and CM contract documents through a comparative study of CM services in several CM contract documents in the America. This results of study are summarized as follows; Establishment of basis on the work scopes and legal license of CM company. Establishment of CM selection and contract procedure. Preparation of CM contract documents. Preparation of CM manual.

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)

B. subtilis JM3 Pretense로 제조한 멸치액젓의 품질특성

박종혁,유상권,김영명,김동수,김상무,Park, J.H.,You, S.G.,Kim, Y.M.,Kim, D.S.,Kim, S.M. 한국식품영양과학회 2006 한국식품영양과학회지 Vol.35 No.5

본 연구는 멸치액젓의 풍미를 유지시키면서, 발효 속도를 향상시키기 위하여 숙성된 멸치액젓에서 단백분해능이 뛰어난 미생물이 생산하는 효소를 분리 정제한 다음 숙성초기의 멸치액젓에 첨가하여, 멸치액젓의 품질특성을 분석하였으며 그 결과는 다음과 같다. pH는 B. subtilis JM3 단백분해효소 첨가량 및 가수분해시간에 따른 변화는 없었고, 젖산량은 4% 단백분해효소 첨가구가 제일 높았다. 아미노질소, 휘발성염기질소 및 가수분해도는 단백분해효소 첨가구가 대조구에 비해 높았으며, 갈변도는 4% 효소첨가구에서 높게 측정되었다. 가수분해가 가장 높게 나타난 2시간째에 관능검사를 실시한 결과 단백분해효소 첨가구가 향 및 맛에서 좋은 평가를 얻었다. B. subtilis JM3 pretense from naturally fermented anchovy sauce was purified in $40{\sim}60%$ ammonium sulfate fraction. In order to accelerate the fermentation of anchovy sauce,2% and 4% of crude B. subtilis JM3 protease were added to 6 month-fermented anchovy sauces, respectively and then the various quality characteristics such as pH, lactic acid, amino-nitrogen, VBN, browning and hydrolysis degree, VBN, and sensory evaluation were analyzed at different storage times. pH was constant during storage time in all samples, whereas lactic acid contents of anchovy sauces hydrolyzed by 2% and 4% proteases were higher than that of control. The amino-nitrogen and volatile basic nitrogen contents of anchovy sauce with 2% and 4% proteases were twice higher than those of control. Anchovy sauces with 2% and 4% pretense increased the hydrolysis rate by 27% and 32%, respectively. Browning degree of anchovy sauce with 4% was higher than those of 2% and control. Anchovy sauce with 2% and 4% proteases was good in sensory evaluation of color, aroma, and taste attributes.

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.

고분자 전해질 연료전지 및 수전해용 촉매층의 이오노머 바인더

박종혁,마하무다아크테르,김범석,정다혜,이민영,신지윤,박진수,Park, Jong-Hyeok,Akter, Mahamuda,Kim, Beom-Seok,Jeong, Dahye,Lee, Minyoung,Shin, Jiyun,Park, Jin-Soo 한국전기화학회 2022 한국전기화학회지 Vol.25 No.4

Polymer electrolyte fuel cells and water electrolysis are attracting attention in terms of high energy density and high purity hydrogen production. The catalyst layer for the polymer electrolyte fuel cell and water electrolysis is a porous electrode composed of a precious metal-based electrocatalyst and an ionomer binder. Among them, the ionomer binder plays an important role in the formation of a three-dimensional network for ion conduction in the catalyst layer and the formation of pores for the movement of materials required or generated for the electrode reaction. In terms of the use of commercial perfluorinated ionomers, the content of the ionomer, the physical properties of the ionomer, and the type of the dispersing solvent system greatly determine the performance and durability of the catalyst layer. Until now, many studies have been reported on the method of using an ionomer for the catalyst layer for polymer electrolyte fuel cells. This review summarizes the research results on the use of ionomer binders in the fuel cell aspect reported so far, and aims to provide useful information for the research on the ionomer binder for the catalyst layer, which is one of the key elements of polymer electrolyte water electrolysis to accelerate the hydrogen economy era.

항공기 도입과 관련된 항공기 인증제도에 대한 이해

박종혁,Park, Jong-Hyeok 한국항공우주산업진흥협회 2006 航空宇宙 Vol.91 No.-

어느 나라에서든지 항공기를 운용하려면 그 나라 항공당국의 관리와 감독을 받아야 한다. 이러한 관리와 감독은 공공의 안전을 위하여 국가기관인 항공당국에서 법적으로 위임받아 수행하는 것이다. 우리나라의 경우 건설교통부산하 항공안전본부와 지방항공청에서 그 기능을 담당한다. 이러한 관리와 감독은 주로 항공기, 항공종사자, 운항조직, 정비조직 등을 대상으로 이루어지며 등록, 제증명, 면허 등과 같은 증명활동, 감독활동, 위반 사항에 대한 법적 제재 등과 같은 수단을 통해 이루어진다. 따라서 항공기를 도입하여 운항하려는 자는 사업계획 단계에서부터 우리나라의 항공안전 관리감독과 관련된 제반 법규와 절차를 사전에 충분히 이해하고 대비하여야 시행착오를 줄이고 시간과 금전적인 손실을 예비할 수 있을 것이다. 여기에선 항공기에 국한하여 항공기 도입과 관련된 항공기 인증제도와 그에 따른 법절차에 대해 설명하고자 한다.