職務態度와 組織員의 動機

韓駿相(한준상) 한국마케팅연구원 1975 마케팅 Vol.9 No.4

광고의 사회교육적 기능과 효과

韓駿相(한준상) 한국광고홍보학회 1989 광고연구 Vol.0 No.3

중 · 노년기 우울이 인지기능에 미치는 영향: 거주지역의 조절효과

한준식,이규호 가정과삶의질학회 2021 한국가정관리학회 학술발표대회 자료집 Vol.2021 No.5

초등 학생들의 필기 능력 개선을 위한 딥러닝 기반 광학 문자인식 도구 개발

한준구,김귀훈 학습자중심교과교육학회 2024 학습자중심교과교육연구 Vol.24 No.3

목적 본 연구의 목적은 딥러닝 기반 광학문자인식(OCR) 도구가 학생들의 필기 개선에 어떠한 영향을 미치는지 조사하는 것이다. 디지털화의 가속화로 인한 악필 증가 현상을 대응하기 위해 손글씨 검사 도구를 개발하고 그 효과를 검증하고자 한다. 방법 본 연구는 젯슨 나노와 NAVER CLOVA OCR을 활용한 알림장 검사 도구 개발로 시작하였다. 이후 초등학교 5학년 학생 20명을 대상으로 약 두 달 동안 이 도구를 적용하였고, 사전과 사후의 시지각 발달 검사를 통해 훈련 전후의 변화를 측정하였다. 결과 연구 결과는 딥러닝 기반 광학 문자인식 도구의 활용이 학생들의 필기 능력에 긍정적인 영향을 미쳤음을 입증하였다. 일부시지각 발달 검사 항목에서 성과 향상이 관찰되었으며, 필기에 대한 자신감 향상과 실질적인 변화도 관찰되었다. 결론 본 연구는 딥러닝 기반 OCR 도구가 학생들의 필기 능력 개선에 중요한 도구로서의 가능성을 확인하였다. 그러나 한정된 샘플그룹에 대한 연구이므로 추가 연구가 필요하며, 이 연구의 축적된 한국어 손글씨 데이터를 활용하면 더욱 효과적인 도구로 발전할수 있을 것을 기대한다. 본 연구에서 개발된 도구는 깃허브(https://github.com/jkf87/autostampper)에서 확인할 수 있다. Objectives The purpose of this study is to investigate how a deep learning-based optical character recognition (OCR) tool can improve students' handwriting. We aim to develop and validate the effectiveness of a handwriting checking tool to counteract the increase in bad handwriting due to the acceleration of digitalization. Methods This study began with the development of a notification letter checker tool using Jetson Nano and NAVER CLOVA OCR. The tool was then applied to 20 fifth-grade students for about two months, and pre- and post-training visuoperceptual development tests were conducted to measure changes before and after training. Results The results of the study demonstrated that the use of a deep learning-based optical character recognition tool had a positive impact on students' handwriting skills. Improvements in performance were observed in some of the visuoperceptual developmental test items, and substantial changes in handwriting confidence were also observed. Conclusions This study confirms the potential of deep learning-based OCR tools as an important tool for improving students' handwriting skills. However, since the study was conducted on a limited sample group, further research is needed, and the accumulated Korean handwriting data from this study can be developed into a more effective tool. The tools developed in this study are available on GitHub at https://github.com/jkf87/autostampper.

간암절제술후 재발한 간암의 간동맥 화학색전술

한준구 대한영상의학회 1991 대한영상의학회지 Vol.27 No.4

Many patients with hepatocellualr carcioma(HCC) treated by surgical resectio experience recurrence sooner or later. The authors analyzed the angiographic features and survival data of patients treated by transarterial chemoembokization(TAE) after recurrence to evaluated the effectiveness of TAE on postoperative recurrent HCC, Sixty-nine patients with HCC were operated on before September 1989 and had recurrence. All were treated by TAE with a Lipiodol-Adriamycin mixture with or without Gelfoam embolization. Angiographic types of the recurrent HCC were the multinodular type in 57.1%, single nodular type in 27%, diffuse type in 12.7% and single nodular type with perinodal extension in 3.2%. One and two-year survival rates after recurrence were 65.8% and 43.4%, respectively, and were not significantly different from the 310 patients who were not operated on but had good liver function. A 2 year survival rate after surgery was 68.7% and significantly better than that of patients who were not operated on. With transarterial chemoembolization, the survival rate after recurrence was the same as that of patients who were not operated on. TAE can be the effective means of treating recurrent hepatocellular carcinoma.

악성 담도 폐색의 치료에서 팽창성 금속 스텐트의 효용성

한준구 대한영상의학회 1993 대한영상의학회지 Vol.29 No.3

Self expandable metallic stent is a good alternative of percutaneous transhepatic biliary drainage because it can eliminate numerous problems caused by external draingage catheter, such as tube dislodgement, bile leakage and psychotic problems. Authors analyzed initial results of self expandable metallic stents used in the patients with malignant biliary obstruction to evaluate the efficacy of the procedure and to find the technical problems in the procedure. Self expandable metallic stents were inserted in 14 patients : three with recurrent stomach cancer : three with gallbladder cancer : seven with Klatskin tumor : one with common duct cancer. Gianturco type stent was used in 9 cases ans Wallstent was used in 2 cases. In remaining three cases, both Z-stent and Wallstent were used in the same patient. The average period of follow up was 104 days (4-409 days). In 13 cases, the patency of the bile duct was restored by the stent (technical success : 92.9%) Occlusions of the stent were found in tow cases, after two재 and 13 months, respectively. Causes of failure and stent occlusion were associated duodenal obstruction, tumor overgrowth and shortening of Wallstent. In remaining 11 patients, one patient was lost to follow up an 10patients did not show recurrent jaundice until death or last follow up. There was no major complication related to the procedure. The insertion of self expandable metallic stent is a safe procedure and can eliminate major disadvantages of PTBD. Overstenting, overlapping and evaluation of associated GI tract obstruction is crucial for obtaining technical success and long-term patency.

담낭담석의 압전방식 체외 충격파 쇄석술 : 새로운 환자적응 기준

한준구 대한영상의학회 1994 대한영상의학회지 Vol.31 No.2

합의회의를 통한 시민의 의식변화

한준,김두환 한국과학기술학회 2004 한국과학기술학회 학술대회 Vol.- No.-

폐 및 종격동을 침범한 유육종증 1례 보고 및 경과에 따른 임파적의 전산화단층촬영 소견과 병리조직 소견과의 비교고찰

한준구 대한영상의학회 1989 대한영상의학회지 Vol.25 No.3

Incidence of Sarcoidosis in Korea has been believed to be very low but recently there are sharp increase in number of case reports fo the sarcoidosis in Korea. And recent advance in CT made the differentiation of some kind of mediastinal lymph node disease possible on the base of lymph node enhancement pattern, Authors experienced a case of sarcoidosis involving the mediastinum the lung and the eye with tyupical radiologic pathologic & clinical features but which showed an unexpected lymph node enhancement patten on CT scan mimicking tubercu-lous lymphadenitis and characteristic histophologic features of healing sarcoid granuloma during the steroid treatment. So authors present the case with literature review and radiologic pathologic correlation with emphasis on the differentiation from tuberculous lymphadenitis.

무수 에타놀의 백서 대동맥주입에 있어서 주입속도에 따른 초기색전기전의 차이에 관한 실험적 연구

한준구 대한영상의학회 1990 대한영상의학회지 Vol.26 No.4

In order to clarify the early mechanism of action of the tissue necrosis induced by intraarterially infused absolute ethanol, abdominal aortography and histopathologic examination after absolute ethanol infusion into aorta at fast(0.4$m\ell$/sec) and slow speed(0.04$m\ell$/sec) were performed on 22 rats(2 controls, 7 in fast infusion group, 7 in slow infusion group, 3 in fast and 3 in slow infusion groups during aorta compression, respectively). Histopathologic features under the light and scanning electron microscope were correlated with the angiographic findings within 30 minutes after ethanol infusion. The results are as follows ; 1. In fast infusion group, histopathologic examination of the kidney showed severe glomerular and tubular damage. Extensive damage on endothelial and medial layer was noted in arteries, and fresh thrombi originated from the damaged arterial wall were seen. 2. Angiographic findings in the fast infusion group were luminal irregularity and early obstruction of large arteries. And circulation time was prolonged. 3. In slow infusion group, histopathologic examination of the kidney showed focal area of severe glomerular and tubular damage on relatively normal background. endothelial and muscular damage was noted in arteries, but the degree of the damage was less severe than that of the fast infusion group. 4. Angiographic findings in the slow infusion group were focal perfusion defect of the kidney, delayed circulation time, and mild luminal irregularity, but obstruction of the major arteries was not seen. 5. Aorta compression group had only minima angiographic and histopathologic alteration compared with uncompressed fast infusion group, although hemorrhage and cast of desquamated cells in renal pelvis noted in compression group suggested the possibility of severe tubular damage and venous thrombosis. 6. In conclusion, there was difference in angiographic and histopathologic features between fast and slow infusion group. It is suggested that thrombus formation from the damaged vessel walls is the initial process leading to the obstruction of the arteries and necrosis of the target organ as well as the damage on the endothelium and perivascular tissue. The amount of the fresh platelet thrombi originated form the damaged endothelial surface and the mechanical occlusion of the arteries with the secondary emboli are the factors which determine the initial angiographic features of the ethanol infused organ. secondary emboli formed in slow infusion group might obstruct the proximal arteries so that protect the cells in distal area from the toxic effect of absolute ethanol. Therefore, the fast infusion of the ethanol is preferred to the slow one for the condition which requires complete ablation of the distal organ. 7. effect of absolute ethanol in aorta compression group needs further investigation.