Exploring Perceptions of Secondary Science Teachers and Their Students on Learning Environments

Shin,Myeong-Kyeong 이화여자대학교 교과교육연구소 2015 교과교육학연구 Vol.19 No.2

The purpose of this study was to investigate how science teachers perceived their learning environment compared to their students in Korea. This study involved 354 students in 9th and 10th grades and their 8 science teachers, and investigated their perceptions of constructivist learning environment. The perceptions of learning environment was measured by employing the instrument of Constructivist Learning Environment Survey(CLES). The main focus of the CLES was to evaluate to what extent the classroom was prepared for student centered learning in six domains; personal relevance, critical voice, shared control, student negotiation, scientific uncertainty, and attitude. This research found that both secondary science teachers and their students evaluated their science classes as lowest in the domain of shared control. That is, both teachers and students seemed to view students’ sharing control of the learning environment with the teacher as seldom found in their classrooms. In addition, both teachers and students showed a similar pattern in the scores in the domains of the CLES, while the scores in each domain of CLES were different from each other. It also lead to discussions on sociocultural constraints to limit students’ sharing control in their learning in science classrooms.

Ciprofloxacin 제제의 생물학적 동등성에 관한 연구

최철희,신재국,신완균,유호진,이경훈,정원석,장인진,신상구 대한화학요법학회 1991 대한화학요법학회지 Vol.9 No.1

국내 시판중인 ciprofloxacin 제제인 Citopcin®(250㎎ tablet)의 동등성을 검토하기 위해 제조원인 Bayer사의 Citopcin®(250㎎ tablet)를 기준제제로 하여 18명의 건강한 남성 피험자를 대상으로 500㎎ 1회 교차 경구 투여후 약동학적 성상을 분석비교한 결과는 다음과 같다. 시험제제의 생체 이용율의 지표인 AUC, C_(mao), T_(max) 및 MRT들의 평균치는 백분율차이에 있어 모든 기준제제 지표의 ± 20% 이내였으며, 이들 생체 이용율 지표들은 분산분석 검정에서 차이를 인지할 수 없었다.생체 이용율 지표들의 기준제제에 대한 백분율 90% 대칭 신뢰구간 검토시 모든 경수들에서 ± 20% 이내의 조건을 만족하였으며 AUC의 경우에는 대칭형 신뢰구간으로 변환시 95% 신뢰구간에서도 동등성의 조건을 만족하였다, 이상의 시험결과로 시험제제인 Citopcin®은 기준제제인 Ciprobay®와 생물학적 동등한 제제로 판단되었다. The pharmacokinetics of ciprofloxacin was studied for the evaluation of the bioequivalence of the generic ciproflocacin products. Two single doses of 500㎎ each of ciprofloxacin(Ciprobay® 250㎎ tablet as a reference compound and Citopcin® 250㎎ tablet s a test compound) were administered orally to ighteen male volunteers in a balanced, randomized crossover design. Pek plasma levels of ciprofloxacin were observed about 1 hour after the doses and the peak concentrations of both products were similar(Ciprobay®, 3.18㎍/㎖; Citopcin®, 2.89㎍/㎖). The values of other pharmacokinetic parameter of ciprofloxacin computed for Ciprobay® are presented in that order: AUC=13.53:12.47㎍·h/㎖, T_(max)=1.28:1.14 hours; MRT=5.30:5.08 hours; t_(1/2)β=3.65:3.47 hours. No satistically significant, differences were detected when AUC and the other parameters were compared with the method of ANOVA. Using the criteria of 90% confidence interval for the assessment of bioequivalence al the parameters were acceptable. The products were found to be equivalent on the premise that no significant difference was detected when the relevant pharmacokinetic parameters were compared, and the confidence limit analysis showed acceptable results.

신안 상서고분군 석재에 대한 암석학적 특성과 석재 유통 고찰

윤석태 ( Youn Seok-tai ),고영구 ( Koh Yeong-koo ),오강호 ( Oh Kang-ho ),김해정 ( Kim Hae-jung ),신자경 ( Shin Ja-kyeong ),김해경 ( Kim Hai-gyoung ) 한국도서(섬)학회 2018 韓國島嶼硏究 Vol.30 No.1

이 연구는 전남 신안군 상태도에 위치한 상서고분군 축조에 사용된 석재들에 대한 암석학적 특성과 채석 등 유통과정에 대해 고찰하고자 하였다. 고분 축조에 사용된 석재들에 대한 암석학적 특성 연구는 외관적 관찰에 의한 암석기재적 연구와 편광현미경 하에서 암석의 광물조성과 조직특성에 대한 연구 및 암석의 주성분 함량조성을 통한 지구화학적 연구를 수행하였다. 이 연구들과 함께 주변지질들과 관련하여 고분석재들의 채석과 이송 등에 대한 연구도 병행하였다. 고대로부터 신안군 일대는 한국-중국-일본을 연결하는 고대 해상교통로에 중요한 위치를 점하는 것으로 알려져 고분 축조에 사용되었던 석재 연구는 고대 해양사 측면에서 의미를 지닌다고 할 수 있다. 기재적 관찰에서 석재들은 중성암맥 기원인 안산반암을 제외하고는 대부분이 응회암류에 해당한다. 이들은 라필리응회암과 세립질 응회암으로 구분되는데 대부분 세립질 응회암에 속한다. 응회암 구성입자들은 각상에서 초각상이고 분급도는 불량하다. 세립질 응회암들은 매우 치밀한 조직을 보유하고 특히 라필리응회암의 불규칙한 이탈흔들은 타포니(tafoni)와 관련될 가능성이 있다. 응회암의 입자들은 사장석편과 암편 등이 주를 이루며 크기 범위가 광범위하다. 사장석들은 알바이트 쌍정이 잘 나타나고 격자쌍정을 이루는 미사장석들도 출현한다. 응회암의 치밀한 조직은 부분적으로 속성작용과 관련되는 것으로 여겨지며 다양한 풍화정도를 보인다. 또한, 미세한 석영맥들이 응회암들을 종횡으로 관통하고 있다. 상기한 상서고분군 석재들에 대한 주성분 원소 함량에 대한 지구화학적 연구에 의하면, 이들 응회암은 화산암류 관점에서 산성암계열에 근접한 중성암 계열 및 산성암계열에 해당시킬 수 있다. 이러한 함량분포 특성 상, 이 응회암들은 두 가지 군으로 나눌 수 있다. 그리고 TAS(total alakali vs silica) 분류에서 이 응회암들은 저알칼리암 계열에 도시된다. 고분축조에 사용된 응회암들은 주변의 암석과 매우 유사하며 석재들 자체도 광물조상과 조직특성에서 서로 유사정도가 높다. 일반적으로 응회암들은 판상특성, 가공의 용이성 및 상대적인 견고성으로 고분과 건축 등에 많이 이용되어 왔다. 이러한 결과들을 기반으로 고분축조에 사용된 응회암들은 산성암계열에 근접한 중성암계열 및 산성암계열 기원을 가지며 주변 암석에서 채석·이송된 것으로 추정된다. This study considers on petrological characteristics and distribution to building stones of Sangseo tumuli in Santae Island, Shin-an, Jeonnam. The petrological study on the stones includes visually petrographical descriptions, textural study by polarized microscope and geochemical analysis. Along with the study, distribution routes of the stones were traced based on the regional geology of the island. Since ancient times, the study area is important as a base on international maritime traffic route. Therefore, studies on the tumuli are meaningful for ancient maritime history. In visual observation, above building stones are of tuffs except for an andesitic porphyry considered as intermediate dyke. The tuffs are assigned to lapilli and fine ones. Their grains are poorly sorted and angular to very angular in roundness. In particular, the fine tuffs show very dense textures and take up the most part of the building stones. In addition, the stones have irregularly removed depressions inferred as the linkage to tafoni, in lapilli tuffs particularly. The tuffs are mainly of plagioclases laths, rock fragments and matrices and ranges widely in grain size. The plagioclases show mostly unambiguous albite twin. And, microcline crystals are observed in the tuffs too. Matrices in the tuffs are considerably dense and weathered. Dense texture in the rocks are related to diagenesis in part. In addition, thin quartz veins irregularly intruded the rocks vertically and horizontally. According to the geochemical analysis of building stones of above tumuli, the stones might be intermediate rock series near acidic rock ones and acidic rock ones in the correspondence of volcanics. Therefore, the tuffs probably grouped as two types and are assigned to subalkaline rock series by TAS diagram. Most the building stones mutually resemble in visual and textural characteristics. Tuffs are generally platy, easy in use and relatively hard. In addition, rocks very similar to the building stones are widely distributed in surrounding area. Synthesizing above results, it is considered that tuffs used in tumuli building are corresponded to intermediate rock series near acidic rock ones and acidic rock, and got from surrounding rocks.

韓國 地方自治의 經濟的 反省

신경훈 국제문화학회 1991 역사와 사회 Vol.5 No.-

광감지기를 위한 floating 게이트 MOSFET의 구조 개선

신경식,백경갑 대진대학교 정보통신연구소 1999 정보통신 논문집 Vol.2 No.-

1.5㎛ 표준 n-well CMOS 공정을 이용하여 floating 게이트 MOSFET을 설계하고 제작하였다. 그리고 floating 게이트 MOSFET의 구조를 변경하였고 구조의 변경에 따른 광특성의 변화를 조사하였다. 여기서 floating 게이트MOSFET의 게이트 수는 전류레멜에 영향을 주지 않고 포화전압에 영향을 주었다. 더욱이 소자의 채널 수가 전류레벨에 영향을 주는 것을 관찰하였다. 소자의 채널 수가 증가함에 따라 전류레벨은 표준구조의 약 60%까지 증가하였다.

성인여성의 사회교육 프로그램 이용실태 및 요구분석 : 광주지역을 중심으로

김경신 전남대학교 가정과학연구소 2000 生活科學硏究 Vol.10 No.-

The purposes of this research were to investigate adult women's use conditions and needs of social education programs, to examine the effects of related variables, and to propose the developmental alternatives. To study these objectives, the data were obtained through 1,024 adult women living in Kwangju. The major findings were as follows : 1) Adult women most frequently used the programs of interests topics and they mostly need the programs of child rearing and health topics. Also more practical methods and contents were demanded. 2) The frequency of participation and needs of further education were significantly related with demographic variables. Conclusively, the contents, methods, structure of social education program for adult women must be altered for development of women's status and consciousness.

모션 인식 기반 스마트 미러

김경진,백경동,신진우,박동규 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.1

The Internet of Things, the core of the Fourth Industrial Revolution, is growing by applying various technologies to various fields. Among them, smart home systems that apply IoT technology to home environments are actively being researched, and the home hub market, which is a communication medium for smart homes, is also developing at the same time. However, the security damage from cyber attacks, which are vulnerabilities in IoT technology, is also increasing in proportion to these developments. In this paper, mirror is implemented as an IoT service hub. It can be used in any space where a mirror is installed, and gesture recognition allows control of existing infrared-based devices as well as certain compatible devices. In addition, the system to solve security problems was implemented by applying AES algorithms between all data communications.

구순열 및 구개열 환자의 소아치과영역에서의 치료

신경미,양규호 大韓小兒齒科學會 1992 大韓小兒齒科學會誌 Vol.19 No.2

Cleft lip and palate are the common serious congenital anomalies to after the orofacial region. Because of the location, they are deformities that involve the dental specialities ghroughout their protracted course of treatment. The porblems encountered in rehabilitation of patients with cleft deformities are unique. Treatment must address patient appearance, speech, hearing, mastication and deglutition. The authors obtained results that pediatric dentist;s role as follows : 1. During the neonatal period, pediatric dentist should recommend the special milk bottle with long extension tube or Hotz appliance. 2. For preoperative correction and diminution of severity of facial deformity, pediatric dentist have applied orthopedic appliance and nasal retainer. 3. As primary teeth erupt, the preventive and restorative needs of cleft lip and palate child must be managed by pediatric dentist. 4. Orthopedic treatment during primary dentition consists of repositioning maxillary segments or correcting dental cross-bites in attempt to allow the dentition to develop in a normal relationship and during mixed dentition stage, orthodontic treatment consists of segment alignment and correction of traumatic occlusion. 5. Orthodontic treatments for permanent dentition require fixed type applinance.

자발성 뇌지주막하 출혈 환자에서 최초 뇌실 크기의 임상적 의의

신일영,윤일규,윤석만,도재원,이경석,배학근,최순관,변박장 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

The purpose of this study is to invesetigate the clinical significance of initial enlargement of ventricle in the patients who had aneurysmal SAH. Of the total 821 patients with aneursmal SAH who were registerd in SAH data bank system between 1989-1999, 307 patients who had been already measured in the size of ventricle at the time of admission, were studied retrospectively. The size of ventricle was calculated by bifrontal index. Normal size of ventricle was defined as 30% or less, mild enlargement was defined as 31 to 39%, and moderate enlargement of vertricle was defined as more than 39% in bifrontal index. The sizes of ventricle using bifrontal index were analysed according to the age, sex, blood pressure, consciousness at admission, medical history of hypertension, location of ruptured aneurysm, Fisher's grade on CT(computerized tomography) scan at the time of admission, cerebral vasospasm, intraventricular hemorrhage (IVH), performance of external ventricular drainage (EVD), and prognosis at discherge. Chi-square test and ANONA were used in the statistical evaluation. The results were as follows : 1) Of the 307 patients, 235(76.5%) had a mild to moderate enlargement of ventricle at the time of admission (more than 30% in bifrontal index). 2) The size of ventricle was enlarged according to the increase of age (p<0.05). 3) In the patients who had ruptured aneurysm on anterior cerebral artery, the size of ventricle significantly increased and showed a higher incidence in mild enlargement compared with moderate enlargement of ventricle (p<0.05). 4) The size of ventricle increased in th patients who had IVH and the EVD was more frequently performed in th patients who had the enlarged ventricle associated with IVH (p<0.05). 5) In the patients who had high Fisher's grade, the size of ventricle had a tendency to increase, but there was no statistical significance. 6) In the patients who had poor prognosis, the size of ventricle had a tendency to increase, but there was no statistical significance. Conclusively, the initial size of ventricle was enlarged in th aged patients, ruptured aneurysm on anterior communicating artery, high FIsher's grade, patients associated with IVH. Considering those factors, prediction for the enlargement of ventricle size may help to treat the patients suffering aneurysmal SAH.

Metallo-β-lactamase 생성 Pseudomonas aeruginosa 및 포도당 비발효그람음성간균의 검출방법에 관한 연구

신경섭,김원식,손재철,홍승복,최재운,형성민 충북대학교 의과대학 충북대학교 의학연구소 2003 忠北醫大學術誌 Vol.13 No.2

연구목적: Metallo-β-lactamse (MBL)는 carbepenem를 포함하는 대부분의 β-lactam 항균제를 가수분해할 수 있으므로 MBL 생성균의 확산은 이들 균에 의한 감염의 치료에 큰 문제를 야기할 수 있다. 따라서 MBL 생성균에 의한 감염의 확산을 막기 위해 이들 균의 조기 검출이 필요하다. 저자들은 MBL 생성균을 검출할 수 있는 세 가지 방법을 PCR 방법과 비교하여 보았다. 재료 및 방법: Imipenem의 MIC가 8 μg/mL 이상인 50개의 포도당 비발효 그람음성 간균을 대상으로 EDTA-double disk synergy test (EDTA-DDS), Etest MBL, Hodge 변법을 시행하였으며 대조 검사로 IMP-1, VIM-1, VIM-2에 대한 PCR을 시행하였다. 결과: 총 50 균주 중 MBL 생성균은 Pseudomonas aeruginosa 1 균주, Alcaligenens xylosxidans 7 균주 등 8 균주(16%)가 검출되었다. 이들 균주는 모두 VIM-2 형이었으며, EDTA-DDS, Etest MBL은 PCR 방법과 100% 일치하였다. Hodge 변법은 8 MBL 생성균주 중 2 균주를 검출하지 못했다. 결론: 50 균주 중 8 균주가 MBL 생성균이었고 모두 VIM-2 형이었다. Etest MBL은 가격이 비싸 검사실에서는 EDTA-DDS가 적당할 것으로 사료된다. Purpose: Because metallo-β-lactamase (MBL) has activity to hydrolysls against most β-lactam drugs, dissemination of MBL producing bacteria may cause problems of treatment of infection by their microorganisms. Early detection or screening for MBLs will contribute to prevent further spread of resistance. Authors compared three MBL detection methods with PCR for MBLs. Materials and Methods: For 50 isolates of g1ucose nonfermentative gram negative bacilli with reduced susceptability against imipenem (MIC≥8 μg/mL), EDTA-double disk synergy (EDTA-DDS), Etest MBL and modified Hodge test were compared with PCR detection method for MBLs. Results: Among 50 isolates of glucose nonfermentative microorganisms, eight MBL producers including a Pseudomonas aeruginosa and 7 Alcaligenes xylosoxidans were detected. Those isolates were VIM-2 producer. The results of EDTA-DDS and Etest MBL completely agreed with PCR for MBL detection. Two isolates among eight MBL Producers were not detected in modified Hodge test. Conclusion: All of MBL producing bacteria were VIM-2 genotype. In conclusion, EDTA-DDS may be useful method for MBL detection in clinical laboratory due to high cost of Etest MBL strip.