디지털정보기기의 메뉴 설계 방법에 관한 연구 : Navigation Media menu를 중심으로

천정은(Jeong-Eun Cheon),이명구(Myeong-Goo Lee),정의태(Eui-Tay Jung),연명흠(Myeong-Heum Yeoun) 한국디자인학회 2010 한국디자인학회 학술발표대회 논문집 Vol.2010 No.10

Lately, digital devices are widely used and the functions of digital devices are becoming more various and intelligent for human's convenient life due to advancing technology. Therefore, users still have trouble using digital devices even though technology is developed. One of the solutions for this problem is to structuralize the contents of digital devices based on user experiences and mental models. The purpose of this study is to understand structuralized car navigation media menu that has Hierarchical structure among the contents classification method through Card Sorting Test method. Structuralizing was possible through Open card sorting test and Close card sorting test on 17 subjects, and found how users classify the contents when there's more than two categories overlap. Also, we found that Card sorting test is appropriate for classifying categories or structuralizing menus. Therefore, in further studies, we will study about appropriate test method including Card sorting test when structuralizing menu through case study for each devices that has various structures.

구순열 수술 후 인중의 변형과 구륜근 결손

김석화,정연우,천정은,박찬영,오명준,김정홍,최태현,Kim, Suk-Wha,Jeong, Yeon-Woo,Cheon, Jung-Eun,Park, Chan-Young,Oh, Myung-June,Kim, Jung-Hong,Choi, Tae-Hyun 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.4

Purpose: The purpose of this study is to estimate muscle defect by ultrasonography in the patients with secondary deformities of the lip. We investigated the association between the muscle defect in the repaired cleft lip and the philtral appearance not only at resting state but also maximal puckering. Methods: From December 2006 to November 2007, 52 children were evaluated after primary or secondary cheiloplasty. Digital photographs were taken both from the front and both three quarter views in repose and at maximal pucker. Video clips were also taken in repose and at maximal pucker. A panel of four, scored the philtral ridge and dimple seen on these photographs and videos by using two visual analog scales. Eminence of the philtral ridge was scored by a 5 point grading scale, from "conspicuous groove" to "normal philtral ridge" and the philtral dimple was scored by 3 point grading scale, from "no dimple" to "prominent dimple". Ultrasound images of the upper lip were made using a linear array transducer at the resting position of the lip and evaluated by a single radiologist. Results: The philtral ridge eminence scored $2.79{\pm}0.54$ and $1.40{\pm}0.53$ at resting and maximal pucker, correlating with "flat" and "conspicous groove". The philtral dimpling scored $1.44{\pm}0.53$ and $2.27{\pm}0.66$ at resting and maximal pucker, correlating with "no dimple" and "slight dimple". Ultrasound imaging showed the average muscle dehiscence to be $3.78{\pm}2.14$ mm at resting position. Correlation between the muscle defect in ultrasound imaging and philtral ridge eminence at rest was statistically significant (p<0.050), but was not significant (p=0.756) at maximal pucker using Spearman's rank correlation. Correlation between the muscle defect in ultrasound imaging and philtral dimpling was not statistically significant both at rest (p=0.920) and at maximal pucker (p=0.815) using Spearman's rank correlation. Conclusion: Quantitative assessment of the muscle defect using ultrasonography correlates with the static philtral appearance, but does not correlate with the dynamic appearance. Also, the size of the muscle defect does not show any correlation with the philtral dimpling. Our findings reveal that ultrasound imaging partially reflect static appearance of philtrum but cannot reflect dynamic appearance and suggest the need for further research to evaluate dynamic appearance.

Modified Chloroprene Rubber를 이용한 Primer 제조 및 특성평가

임경은 ( Gyeong Eun Lim ),정부영 ( Boo Young Jeong ),천정미 ( Jung Mi Cheon ),최민지 ( Min Ji Choi ),천제환 ( Jae Hwan Chun ) 한국접착및계면학회 2018 접착 및 계면 Vol.19 No.1

본 연구에서는 부착력 향상 및 모바일 기기용 toluene-free 프라이머를 제조하기 위해 클로로프렌 고무 (CR)에 실리카 나노입자를 분산시켜 CR/silica 복합체를 제조하였다. CR/silica 복합체는 FT-IR, SEM, EDS 등을 이용하여 물성을 평가하였다. SEM을 통해 실리카 나노입자의 함량이 4 phr일때 가장 균일하게 분산되어 있는 것을 확인하였다. 접촉각과 연필경도측정을 통해 실리카 함량이 증가할수록 소수성을 띠는 것과, 연필경도가 증가함을 나타내었다. 부착력 결과 역시 실리카 함량이 4phr일때 가장 높았으며, 실리카가 함유되지 않은 P-0에 비해 50% 증가함을 확인하였다. Water In this study, CR/silica nanocomposites were produced by dispersing nanosilica on chloroprene rubber (CR) to apply toluene-free primers for mobile devices. The properties of the modified chloroprene rubber using nanosilica was evaluated through FT-IR, SEM, EDS, Contact angle. The SEM images indicated that P-4 (4 phr) was the most homogenously dispersed. Pencil hardness measurements and Contact angle indicated that the hardness of the CR/silica nanocomposite and the hydrophobicity increased with increase in the silica content. The peel strength of P-4 (4phr) was the highest and the initial peel strength of P-4 sample (2.9 kg_f/inch) was 50% higher than that of the P-0 sample.

Allyl 3-(trimethoxy silyl)propyl ether를 이용한 수성 폴리우레탄 아크릴레이트 실란의 합성 및 물성 연구

박큰별(Kuenbyeol Park),천정미(Jung Mi Cheon),정부영(Boo Young Jeong),정일두(Ildoo Chung),최민지(Min Ji Choi),임경은(Gyeong Eun Lim),천제환(Jae Hwan Chun) 한국고분자학회 2018 폴리머 Vol.42 No.3

수성접착제의 접착특성을 향상시키기 위하여 allyl 3-(trimethoxy silyl)propyl ether(ATSE)를 합성하고 이를 waterborne polyurethane acrylate에 적용하여 접착제를 제조하였다. FTIR과 ¹H NMR을 사용하여 ATSE의 합성을 확인하였다. 또한 FTIR을 통해 수성 폴리우레탄 아크릴레이트 실란(WPAS)의 합성을 확인하였고 DSC와 TGA를 사용하여 WPAS의 열적특성을 확인하였다. DSC와 TGA 분석을 통하여 ATSE의 함량이 증가할수록 soft segment의 열용량이 감소하고, 열안정성이 향상되는 것을 확인하였다. 또한 ATSE 함량에 따른 접착특성을 평가한 결과, ATSE 의 함량이 2.91 wt%일 때에 상태접착력 및 내수성이 가장 우수하였다. In order to improve adhesion properties and water resistance of waterborne polyurethane adhesives, allyl 3-(trimethoxy silyl)propyl ether (ATSE) was prepared. Waterborne polyurethane acrylate silanes (WPAS) was synthesized using ATSE. Their chemical structures were confirmed by FTIR and ¹H NMR, and their thermal properties were characterized by DSC and TGA. Analyses of DSC and TGA confirmed that heat capacity of soft segment decreased and thermal stability improved with increasing ATSE. Also, adhesion properties and water resistance were evaluated by UTM. In the adhesion properties and water resistance test, the maximum values were obtained by WPAS containing 2.91 wt% ATSE.

슬관절 퇴행성 관절염에 대한 글루코사민의 효과

이도영,조규형,문호생,천정은 대한슬관절학회 2001 대한슬관절학회지 Vol.13 No.1

Purpose: To assess the efficacy of glucosamine sulfate in the treatment of patients with knee osteoarthritis. Materials and Methods: Using a double blind, randomized controlled trial design, patients with clinical and radiographic evidence of knee osteoarthritis were recruited into 3 groups, The glucosamine group of 43 patients was treated with glucosamine 550mg capsule and the placebo group of 27 patients with rice powder 250mg and lactose 250mg capsule, three times daily for 12 weeks. The NSAID group of 26 patients was treated with etodolac(lodineⓡ) 200mg capsule three times daily for 6 weeks. Clinical and radiographic change was evaluated by assessing the Lysholm knee score, pain score, passive range of knee motion, deformity of the knees, Kellgren-Lawrence radiographic scale and width of the tibiofemoral joint space in weight bearing radiography. Results: In the glucosamine group, significant improvement was found in Lysholm knee score since 6 weeks of treatment and in pain score since 9 weeks compared with the placebo group, but not in radiographic indices. In the NSAID group, both Lysholm knee score and pain score were significantly improved than other groups since 3 weeks of treatment. In both glucosamine and NSAID groups, significant improvement was not found in passive range of motion and deformity of the knees. Conclusion: The effect of glucosamine was lower and slower than NSAlD in the treatment of the patients with knee osteoarthritis and improvement of Lysholm knee score was expected with long-term use of glucosamine over 6 weeks and pain-relief over 9 weeks.

갑상선 중독증과 이상 동루를 동반한 급성 화농성 갑상선염 1예

김경원,박영주,김태용,문민경,한세원,천정은,김영아,진태훈,정희순,박도준,조보연 대한내분비학회 2004 Endocrinology and metabolism Vol.19 No.1

본 증례는 갑상선 중독증과 이상동루를 동반한 급성 화농성 갑상선염의 국내최초의 예이다. 환자는 평소 건강하던 17세 여자로, 내원 2주전 감기증상과 함께 경부 통증이 있어서 외래를 방문하였다. 해열제 치료에 반응이 없고 점점 환자상태가 악화되어 입원 후급성 화농성 갑상선염을 진단 받았다. 배농액에서 group D Streptococcus가 동정되었으며 항생제 및 절개/배농 후 임상양상이 호전되었다. 급성 갑상선염의 호전 후 바륨 조영검사에서 이상 동루를 확인하였으며, 이에 대한 화학적 소작술을 시행하였다. 본 증례에서와 같이, 갑상선의 동통과 갑상선중독증을 동반한 경우 급성 갑상선염을 아급성 갑상선염과의 감별 진단하는 것은 매우 중요한 반면 그 구별이 어려운 경우가 있다. 그러므로 본 논문에서는 저자들이 경험한 증례를 통하여 급성 갑상선염과 아급성 갑상선염을 감별 진단 과정을 문헌 고찰과 함께 보고하는 바이다. This is the first case report about acute suppurative thyroiditis with thyrotoxicosis and pyriform sinus in Korea. A female patient, who was previously healthy, visited our hospital for the treatment of common cold symptoms and neck pain which developed 2 weeks before the visit. The condition of the patient did not improve through the use of antipyretics and even worsened. The patient was admitted to the hospital and was diagnosed with acute suppurative thyroiditis. The culture result of the drained fluid revealed group D Streptococcus. The patients condition was improved after using antibiotics and drainage. After recovery from acute thyroiditis, esophagography was performed and the pyriform sinus was found to be obliterated by chemical cauterization. It is very important yet difficult to differentiate acute thyroiditis with thyrotoxicosis from subacute thyroiditis. In this study, we discussed the differential diagnosis between acute thyroiditis and subacute thyroiditis with a review of literature (J Kor Soc Endocrinol 19:69∼75, 2004).