디지털 CR시스템에서 Image plate의 화질 평가

곽병준,지태정 대한방사선방어학회 2011 방사선방어학회지 Vol.36 No.4

포스트코로나시대의 좋은 수업에 대한 초등학교 교사와 초등학교 고학년 학생의 인식 비교

곽병준,손은경,황지현,김대권 학습자중심교과교육학회 2022 학습자중심교과교육연구 Vol.22 No.20

Objectives The purpose of this study is to derive the characteristics of excellent classes through comparing the opinions of elementary school teachers and higher grade of a elementary school students on excellent classes. Methods n-depth interviews were conducted with teachers with experience in class research and professional development and students with excellent academic achievement and classes attitude, and network comparison analysis was conducted on the results. Based on the network comparison analysis conducted, the opinions of teachers and students were compared, and commonalities and differences were derived. Results As a result of the study, in opinions on excellent classes, teachers show efforts and methods to develop self-directed learning skills and literacy of students who have fallen to COVID-19, and students show methods and efforts to participate in classes and actively interact with teachers and other students. Studies on excellent class before COVID-19 and this study commonly said that interaction in class is important for both teachers and students in opinions on good classes. Conclusions In this study, the teacher emphasized more student-centered classes, saying that excellent class in the post-COVID-19 era are classes that develop self-directed learning skills of students who have fallen due to COVID-19. In addition, it was emphasized that students' literacy skills, which are lower than before due to online lectures, should also be improved. 목적 본 연구는 좋은 수업에 대한 초등학교 교사와 초등학교 고학년 학생의 의견 비교를 통해 포스트코로나시대의 좋은 수업에 대한인식을 연구하는 목적으로 수행되었다. 방법 이를 위하여 수업 연구 및 전문성 신장 경험이 있는 교사와 학업성취도 및 수업 태도가 우수한 학생을 대상으로 심층면접을실시한 후 그 결과에 대해 네트워크 비교 분석을 실시하였다. 실시한 네트워크 비교 분석을 기반으로 교사와 학생의 의견을 비교하고, 선행연구와 비교하여 코로나-19 이후 변화한 점과 유사점을 도출하였다. 결과 교사와 학생 그리고 학생과 학생간의 상호작용이 원활하게 이루어지고 학생이 학습에 재미를 느끼고 자신감과 성취감을 바탕으로 자기 주도적인 학습을 하도록 하는 것이 좋은 수업이라는 것은 기존의 좋은 수업에 대한 연구결과와 변함이 없었다. 하지만, 코로나-19 이후의 좋은 수업은 잦은 온라인 수업의 영향으로 떨어진 학생들의 자기주도 학습능력과 문해력을 키워주는 수업을 중요요인으로 인식하고 있었다. 결론 이를 세워주기 위해서 독서교육과 문해력 교육을 강조하며 학생들의 높은 참여도와 효율적인 상호작용이 학습 방법면에서 깊이있게 풀어져야 한다는 판단을 하고 있었다.

전산화 단층 촬영에서 검사 전 불안 수준과 신체적 변화 -외래환자를 중심으로-

곽병준,이정희,임인철,이재승,전은미,강세원 한국자료분석학회 2013 Journal of the Korean Data Analysis Society Vol.15 No.1

본 연구는 전산화 단층 촬영 검사 환자를 대상으로 검사 전 환자의 심리적 불안상태를 파악하고 검사 전․후 환자의 신체적 변화와 신체적 변화에 영향을 미칠 수 있는 특성들을 파악하기 위한 서술적 조사연구이다. 자료 수집은 2012년 1월부터 2012년 8월까지 부산지역 S병원 영상의학과 CT 검사실 환자 300명을 대상으로 수행되었다. 연구 도구는 Spielberger의 상태-특성 불안 척도를 사용하였으며, 신체적 변화로는 생리학적 변수로서 체온, 수축기혈압, 이완기 혈압과 심장박동수를 측정하였다. 대상자의 검사 전 불안의 평균 점수는 상태불안 46.78±6.60점, 특성불안 45.57±7.56점으로 나타났다. CT 검사 전후의 대상자의 신체적 변화는 체온, 수축기혈압, 이완기 혈압, 심장박동수에 유의한 차이가 있었다(p<0.001). 신체적 변화는 검사전 상태불안(t=-2.003, p= 0.046), 연령(F=4.446, p=0.039), 조영제 사용량(F=3.368, p=0.036)에 의해 혈압과 맥박에 차이가 있었다. 전산화 단층 촬영 후의 신체적 변화의 특성으로 검사 전 불안 정도와 연령, 조영제 사용량 등이 고려될 필요가 있다. This study used a descriptive design to investigate pre-procedural anxiety state of patients undergoing CT (computer tomography) examination and their physical changes before and after the procedure. Data collection was performed for 300 patients in a CT examination room of radiology department, S hospital in Busan from Jan. 2012. through Aug. 2012. For anxiety, Spielberger's state-trait anxiety scale was used and for physical changes, biological variables such as body temperature, systolic blood pressure, diastolic blood pressure, and heart beat were measured. The average scores of pre-procedural anxiety of the participants were shown as 46.78±6.60 for state anxiety and 45.57±7.56 for trait anxiety. As for physical changes before and after the CT procedure, body temperature, systolic blood pressure, diastolic blood pressure, and heart beat showed significant differences (p<0.001). As for physical changes, pre-procedural state anxiety (t=-2.003, p= 0.046), age (F=4.446, p=0.039), and dosage of contrast media (F=3.368, p=0.036) made differences in blood pressure and pulse. Factors such as pre-procedural anxiety, age, and dosage of contrast media need to be considered as traits of a patient’ physical changes related to CT examination.

F-18 FDG를 이용한 핵의학 검사에서 주변 선량의 안전성 평가

곽병준,지태정,민병인 한국안전학회 2009 한국안전학회지 Vol.24 No.6

Radioactive medicines are used a lot owing to the increase of a PET-CT examination using glucose metabolism useful for the early diagnosis of diseases. Therefore, the spatial dose that is generated from patients and their surroundings causes the patients' guardians and health professional to be exposed to radiation. However, they get unnecessarily exposed to radiation because medical institutions lack in space for isolation and recognition of the examination. This research intended to examine the spatial dose rates by measuring the dose emitted from the patient for 48 hours to whom F-18 FDG was administered. The spatial dose rates that were measured 100cm away from the patient's body after F-18 FDG was injected were 65.88μSv/hr at 60-minute point, 45.13μSv/hr at 90-minute point, 9.88 μSv/hr at 6-hour point, and 1.24μSv/hr at 12-hour point. When the dose that the guardian and health professional got was converted into the annual(240-day working) accumulative dose, it was examined that the guardian received 81.56 mSv/yr and health professional received 49.36mSv/yr. In addition, the result has revealed that the dose that the patient received from one time of PET-CT examination was 3.75mSv/yr, which is 1.5 times more when compared with the annual natural radiation exposure dose.

경옥고(瓊玉膏)가 노화유발 흰쥐의 항산화능에 미치는 영향

곽병준,이송실,백진웅,이상재,김광호,Kwak Byung-Jun,Lee Song-Shil,Baek Jin-Woong,Lee Sang-Jae,Kim Kwang-Ho 대한예방한의학회 2003 대한예방한의학회지 Vol.7 No.2

Objectives : In order to examine the antioxidant activities of Kyungohkgo(瓊玉膏), the study was done through measurement of parameters such as Thiobarbituric acid reactive substance(TBARS), Superoxide dismutase(SOD), Catalase(CAT), Glutathione peroxidase(GSH-px), Plasma total lipid, Plasma total triglyceride, Plasma total cholesterol, HDL-cholesterol concentrations in rat erythrocytes and plasma. Methods : Sprague-Dawley rats divided into 3 groups, Normal group(l2 weeks old), pathologically induced group(injected D-galatose 50mg/kg, 1time/day for 6 weeks, CONTROL) and Kyungohkgo(瓊玉膏) administered group(D-galactose 50mg/kg and Kyungohkgo extracts 1125.0mg/kg 1time/day for 6 weeks, KOG). Rats were sacrificed and TBARS, SOD, CAT, Plasma total lipid, Plasma triglyceride, Plasma total cholesterol, Plasma HDL-cholesterol concentrations and GSH-px were measured in rat erythrocytes and plasma. Results : Plasma TBARS concentrations of KOG group were significantly lower than those of control. Red blood cell(RBC) SOD activities of KOG group was increased(F=3.619, p=0.052, ANOVA test), and RBC catalase activities of all experimental group were not significantly different. RBC GSH-px activities of KOG group was increased(F=6.844, p=0.008, ANOVA test). The changes of Plasma triglyceride was not significantly different. Plasma total lipid of KOG group showed significant decrease compared to the control group(F=19.337, p=0.0001, ANOVA test). Plasma total cholesterol and HDL-cholesterol concentrations of all experimental groups were not significantly different. Conclusions : According to the above results, it is considered that Kyungohkgo(瓊玉膏) is effective in inhibiting lipid peroxidation and increasing antioxidative enzyme activities in D-galactose induced aging rat.

중학교 『역사』교과서 집필과정에 대한 반성적 고찰

곽병준,안형주(토론) 청람사학회 2012 靑藍史學 Vol.20 No.-

일부지역 유방검사의 질환별 발생 빈도에 관한 연구

곽병준(Byung-Joon Kwak),임인철(In-Chul Im),지태정(Tae-Jeong Ji) 대한방사선과학회(구 대한방사선기술학회) 2007 방사선기술과학 Vol.30 No.4

  본 연구는 2005년 통계청의 전국 인구비율에 대한 발표를 기준으로 노인 인구 비율이 가장 낮고 광역도시 중 유방암의 조발생률과 연령표준화발생률이 가장 낮은 지역을 중심으로 외래에 내원하여 검사한 유방촬영술과 유방초음파 검사에서 질환별 발생빈도와 검사 분포를 조사하였다. 연중 유방검사 빈도는 7월과 8월에서 가장 많은 검진을 한 것으로 조사되었으며, 연령별 분포는 40대가 39.8%, 30대가 32.4%의 순으로 조사되었다. 외래에 내원하여 검진한 환자 중 질환별 분포는 유방초음파 검사에서 43%가 비정상 소견을 보였다. 그 중 치밀조직과 소결절이 21.5%, 섬유낭종이 8.3%의 순으로 진단 소견을 보였다. 유방촬영술에서는 치밀조직과 소결절이 41.3%, 양성석회화가 6.4%의 순으로 조사되었다. 검사 유형별 조사에서는 유방초음파 검사가 8개 질환으로 세분되어 판독되었고 유방촬영술은 6개 질환에서 진단 소견을 보여 구체적인 질환의 명시가 부족한 것으로 나타났다. 이 지역에서 외래 진료로 유방검사를 실시한 검사자 중 46%가 비정상 소견을 보인 것으로 나타났다.   The breast cancer occurrence have been increase yearly. Consequently the effort for early discovery or prevention is necessary. The study investigated the age distribution rate and a disease distribution occurrence rate in the breast medical examination of Ulsan city area. Breast medical examination distribution ratio it preferred the breast ultrasound with mamography 38.8% breast-ultrasonogrphy 61.2% to be investigated. The disease categories distribution was various from breast-ultrasound medical examination and it was investigated with becomes ramification. The reading find was many most infiltrating duct carcinoma from 40 age stage. The ductal carcinoma in situ was many from 50 age stage. The most many disease was investigated HP(Heterogenous dense nodule or mass parenchyma pattern) with 29.2%. Also the breast abscess or mastitis disease is confirmed only the breast-ultrasonography examination, even from the outside disease it was investigated with the fact that the breast-ultrasound raises the discrimination.

과립백혈구 및 림프구 단핵구 세포의 방사선에너지에 의한 손상기전 연구

지태정,곽병준 대한방사선방어학회 2010 대한방사선방어학회 학술발표회 논문요약집 Vol.2010 No.04

방사선 선량이 생체 내 조직에서 미량원소에 미치는 영향

지태정(Tae-Jeong Ji),곽병준(Byung-Joon Kwak) 한국콘텐츠학회 2011 한국콘텐츠학회논문지 Vol.11 No.8

방사선에너지가 생체에 미치는 영향 중 물질대사에 관여하는 미량원소의 함량을 알아보았다. 실험 방법은 mouse에 1Gy, 5Gy, 10Gy의 X선을 전신 조사한 후 간 조직에서 분석하였다. 그 결과, 일부 원소에서 대조군과 비교하여 함량 변화가 확인되었다. 선량에 따른 변화에서는 1Gy에서는 크게 차이를 보이지 않았으나 5Gy, 10Gy의 높은 선량에서는 Ca, Mn의 함량이 감소되었다. 그 중 Ca의 함량이 가장 많이 감소되었으며, 근육 긴장과 만성 두통 등의 증후군을 유발하는 것으로 판단된다. 함량 증가를 보인 원소는 Al으로 100% 증가된 것으로 조사되었다. 방사선 조사 후 기간 경과에 따른 함량 변화에서는 Fe, Ba 등에서 감소하는 경향을 보였다. 유해원소는 Cd 함량이 25% 증가 되었는데 이는 칼슘대사에 관여하는 것으로 알려졌다. 따라서 방사선에너지에 의한 세포 손상이 미량원소 함량 변화에 영향을 주는 것으로 판단되며, 전구증상을 유발하는데 일정부분 관련이 있는 것으로 사료된다. We looked into the content change of microelements participating in the metabolism among the impacts of radiation energy on living bodies. We irradiated X-rays of 1 Gy, 5 Gy and 10 Gy to the whole bodies of mice, and then analyzed the liver tissues. We found that the microelement content had changed in some elements compared with the control group. When it came to changes by radiation dose, there was no significant change with the absorbed level of 1 Gy, but the higher absorbed levels of 5 Gy and 10 Gy reduced the content of Ca and Mn. In particular, the Ca content was reduced the most, apparently causing symptoms such as muscle tension and chronic headache, etc. The increased element was Al, which was found to have increased by 100%. In regard to the content change according to the time elapsed after irradiation, the contents of Fe, Ba, etc. showed the tendency of reduction. The content of Cd, a harmful element, increased by 25%, and it seemed that the element was involved in the calcium metabolism. Therefore, cell damage by radiation energy is determined to have an impact on the content change of microelements and considered to be partly related to a cause of precursor symptoms.

아라천 수질변화 예측 및 수리거동 특성 연구

김윤정,박천홍,남세희,곽병준,권소현,이가람,한인섭 한국수처리학회 2019 한국수처리학회지 Vol.27 No.2

The purpose of this study is predicting water quality change of Ara River depeding on the case of hypothetic scenario that all Gulpo River flow inflow to Ara River. In-addition, Suggesting minimization method by effect of Gulpo River inflow by understanding hydraulic flow properties in streams are performed. The hypothetic scenario of Gulpo River's inflow are consisted as removal of rubber-weir of Gyulhyeon-weir with elimination of concrete-weir(S2) on not(S1) and compare with current condition(S0) of Gyulhyeon-weir. As a result of prediction of water quality change by scenario as follows, range of variation of S1 : TOC -1.1 ~ 19.1%, Chl-a -2.8 ~ 21.0%. range of variation of S2 : TOC -1.1 ~ 18.9%, Chl-a -2.6 ~ 20.8%. As a result of Drifter experience, Operating condition of flowing in and out at once a day are showed distance of surface layer are increased 1~2 km/day to 5~12 km/day. but inflow rater of Seawater are decreased average 14.5 m3/s to 10.4 m3/s(about 28%) then condition of flowing continually twice a day. In conclusion, The maintaing method of transport time of kinetic energy as same direction even less water-flow are effective for reducing retention time on surface layer containing high contamination rate by maximizing influence of density current as Ara River salinity layer. Examination of watershed connection for minimizing effect of water quality of both water-shed by a various water flowing method within improvement of water quality of Gulpo River is possible by this study.