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      • 특성화고등학교 학생들의 과학 수업에서의 흥미에 관한 내러티브 연구: 전공 교과목과의 비교를 중심으로

        장준규 ( Jun-kyu Chang ),이준기 ( Jun-ki Lee ) 전북대학교 과학교육연구소 2023 과학과 과학교육 논문지 Vol.48 No.1

        이 연구는 특성화 고등학교에 입학한 학생 4명의 자발적 참여를 통해 이루어 졌다. 이 연구 대상자들이 어떠한 부분에서 과학에 대한 흥미를 경험했고, 무엇이 과학에 대한 흥미를 잃게 되었는지에 대해 연구 참여자들의 관점에서 확인하고 분석하고자 내러티브 탐구 방법을 통해 깊이 있는 면담을 진행했다. 이 연구의 목적은 특성화 고등학교 학생들이 과학에 흥미를 잃게 하는 다양한 요인들을 파악하는데 있다. 본 연구의 주요 결론을 제시하면 다음과 같다. 첫째, 연구 참여 학생들은 초 · 중학교시기에 연구 참여 학생들은 과학에 대한 흥미를 어느 정도 가지고 있었지만 특성화 고등학교에 입학 후 잃게 되었다. 둘째, 학생들이 과학교과에 흥미를 느낄 수 있게 해주는 환경이 조성되지 못했다. 결론을 종합하면 연구 참여 학생들은 과학교과에 대한 필요성을 인지하고 있음에도 불구하고, 과학교과에 대한 흥미를 느끼지 못해 수업에 집중할 수 없었다. 또한 연구 참여학생들의 과학교과는 일관적인 이론수업으로 진행되었고, 그 과정에서 학생들의 이해도는 고려되지 않았다. 결국 학생들은 과학교과에 대해 어려움을 느꼈고 흥미를 잃게 되었다. This study was conducted through the voluntary participation of four students who entered a vocational high school. The purpose of this research was to identify various factors that cause students at vocational high schools to lose interest in science, by examining and analyzing from the perspectives of the research participants which parts of science they experienced an interest in and what caused them to lose interest. In-depth interviews were conducted using narrative inquiry method. The main findings of this study are as follows. First, the participating students had some interest in science during their elementary and middle school years, but lost it after entering the vocational high school. Second, the environment that allows students to develop an interest in science was not provided. In conclusion, although the participating students were aware of the importance of science, they could not focus on class because they did not have an interest in science. In addition, their science classes consisted of consistent theoretical lessons, without considering the students' level of understanding. As a result, the students found science classes difficult and lost interest.

      • 고요산혈증의 위험인자 : 아산시 지역 주민을 대상으로

        김용배,장원기,황보영,김화성,안규동,이병국,이용진,이종은,이준숙,이찬구,이한정,이성수 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

        Objective : Serum uric acid has now been identified as a marker for a number of metabolic and hemodynamic abnormalities. The aim of this study is to evaluate risk factors which influence hyperuricemia in the citizens of Asan. Method : The study design was cross-sectional and research subjects were 1086 citizens of Asan. General characteristics, cigarette smoking, alcohol consumption, and past history were obtained by interview using a structural questionnaire. Also, we measured height, weight and blood pressure, and serum uric acid of the subjects. Results : The mean serum uric acid level was 5.27 ㎎/㎗ in men and 4.01 ㎎/㎗, in women, In the multiple logistic regression analysis, statically significant risk factors of hyperuhcemia were gender, body mass index, blood lead concentration, and serum creatinine. Conclusion : Our results suggest that gender, body mass index, blood lead concentration, and serum creatinine might be the most important risk factors of hyperurcemia. Education program as well as routine check-up for serum uric acid was highly recommended for the effective prevention of hyperuricemia.

      • KCI등재

        Effect of Impact Velocity on Interface Characteristics of HT‑9 Steel Joints Fabricated by Magnetic Pulse Welding

        Jun‑Woo Song,Jin‑Ju Park,Gyoung‑Ja Lee,Min‑Ku Lee,Kyu‑Hyun Park,Soon‑Jik Hong,Jung Gu Lee 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.3

        The weldability window in magnetic pulse welding (MPW) is proposed for the end-closure joining of HT-9 steel tubularworkpieces. Based on both theoretical and experimental investigations, the impact velocity of the flyer tube at the momentof collision had a dominant effect on the bonding characteristics of the resultant joints and the optimal impact velocity wasestimated to be in the range of 265–290 m/s in this alloy system. Under the optimal process conditions, no leak was detectedduring helium leak testing. Moreover, the integrity of the joint interface was preserved until the tube section ruptured duringinternal pressure burst testing. For HT-9 steel, the ductile δ-ferrite phase produced by the localized interfacial melting duringMPW acted as an effective obstacle to crack propagation, thereby enhancing the fracture resistance of the joint interface. Allof the results demonstrated the high integrity and durability of the HT-9 steel tube assembly fabricated by the MPW process.

      • SCOPUSKCI등재

        화학적 요부 교감신경절 차단에서 한 분절 차단과 두 분절 차단의 비교

        김종일,이규종,이상곤,민병우,반종석,문철준 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.41 No.4

        Chemical Lumbar Sympathetic Block: Comparison of One- Versus Two-needle Techniques Chul-Jun Mun, M.D., Kyu-Jong Lee, M.D., Sang-Gon Lee, M.D., Jong-Il Kim, M.D.^* Jong-Suk Ban, M.D., and Byung-Woo Min, M.D. Department of Anesthesiology, Fatima Hospital, Daegu, Korea ^*Kim Jong Il Pain Clinic, Daegu, Korea Background: It was frequently noticed in the course of performing a two-needle sympathectomy, that satisfactory spread of contrast solution could be produced by injection through only one of the needles. This led to a closer examination of the merits of single-needle technique. Methods: Forty patients were randomized into two groups. Patients in the single-needle group (n = 20) were injected at the second or third lumbar sympathetic ganglia, while patients in the two-needle group (n = 20) were injected at the second and thired lumbar sympathetic ganglia. Lumbar sympathetic blocks were performed using 3 ml of alcohol and the spread of injectate was verified with C-arm fluoroscopy. The indicators of a successful sympathetic block are increasing skin temperature, decreasing pain, and anhidrosis in the distal extremity. Results: The duration of anhidrosis was 12.2 ?? 2.6 months (mean ?? SD) in the single-needle group versus 13.6 ?? 3.6 months (mean << SD) in the two-needle group. Conclusions: As these results were not significantly different from those obtained in patients having considered to be effective for a neurolytic ;i,bar sympathectomy. (korean J Anesthesiol 2001; 41: 439~443)

      • KCI등재

        한국 정신장애의 역학 조사 연구[I] : 각 정신장애의 유병률

        조맹제,함봉진,김장규,박강규,정은기,서동우,김선욱,조성진,이준영,홍진표,최용성,박종익,이동우,이기철,배재남,신정호,정인원,박종한,배안,이충경 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4

        Objectives : This study aims to estimate the prevalence of the DSM-IV psychiatric disorders in Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI). Methods : Subjects were selected by taking multi-stage, cluster samples of 7,867 adult household residents, 18 to 64 years of age, in ten catchment areas. Total 78 trained interviewers administered the K-CIDI to the selected respondents, from June 1 to November30,2001. Results : Total 6,275 respondents completed the interview. Some 33.5% of respondents reported at least one lifetime disorder, 20.6% reported at least one-year disorder, and 16.7% reported at least one-month disorder. The most common lifetime disorders were alcohol abuse/dependence (17.24%), nicotine dependence/withdrawal (11.19%), specific phobia (5.16%), and major de-pressive disorder (4.25%). The lifetime prevalence of substance abuse/dependence (0.25%) and schizophrenia (0.16%) was very low. Nicotine and alcohol use disorder showed very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among female than male. Conclusion : The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in distributions of psychiatric disorders across the areas and times were observed.

      • 척추관 협착증에 대한 연구 : 요추관 협착증 환자에서 협착 부위에 따른 수술적 치료의 결과 Results of the Operative Treatments by the Level of Lumbar Spinal Stenosis

        이준규,안재성,양준영 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.2

        Spinal stenosis is any type of narrowing of the main spinal canal, nerve canal or foramina from structural abnormality of bony components. Posterior decompression only provide relief of pain and restoration of neurologic function, and simultaneous posterolateral fusion is needed for prevention of spinal instability after wide posterior decompression. The degree of decompression (focal or wide), instrumentation and bone graft is dependent to the level of stenosis and instability. The purpose of this study is to compare the operative results clinically and radiologically by the level of spinal stenosis. We reviewed 73 patients of lumbar spinal stenosis who had undergone operations with posterior decompression or posterolateral fusion with spinal instrumentation at our hospital, From January 1987 to October 1997. We classified the level of stenosis into one level, two level and multi-level(above three level) stenosis, and on the last follow up, radiological bony union, clinical results, and complications were compared. The following results were obtained. I. The one level was 42 cases(57.6%), two level 24 cases(32.9%), and multi-level stenosis 7 cases(9.6%) and the most common stenotic level was at LA-5, 31 cases(42.5%). 2. Posterior decompression only were carried out on 20 patients(27.4%), and simultaneous posterolateral fusion with instrumentation were 53 patients(72.6%), CD 4 cases, CCD 11 cases, PWB 2 cases, and Diapason 36 cases. 3. The radiologic union rate was 41 cases(97.6%) in one level, 22 cases(87.5%) in two level, 6cases(85.7%) in multi-level spinal stenosis. 4. The excellent or good clinical results(by the Kikaldy-Willis criteria) were 40 cases (95.2%) in one level, 22 cases(91.8%) in two level, 6 cases(85.7%) in multi-level spinal stenosis. 5. The postoperative complications such as infection, metal failure, neurologic deficit or death were 6 cases(14.3%) in one level, 4 cases(21%) in two level, 3 cases(44.3%) in multi-level stenosis.

      • Fluoroquinolone계 항균제의 penicillin 내성 폐렴구균(Streptococcus pneumoniae)에 대한 항균력 비교

        이광준,배송미,황규잠,이영희,김기상 대한화학요법학회 2002 대한화학요법학회지 Vol.20 No.3

        목적 : 최근들어 penicillin 내성 폐렴구균의 급속한 증가와 전세계로의 확산은 심각한 문제를 야기하고 있다. 1990년대 들어 그람음성 세균뿐 아니라 그람 양성 세균에 대한 항균력이 향상된 많은 fluoroquinolones계 항균제의 개발에 힘입어 폐렴구균성 감염질환 치료시 사용이 증대되고 있으며 한편, 이와 더불어 이미 fluoroquinolone계 항균제에 대한 내성을 보이는 폐렴구균에 대한 보고가 증가하고 있는 실정이다. 이에 본 실험에서는 국내 임상 분리 폐렴구균 중 penicillin에 고도내성을 보이는 균주를 대상으로 하여 fluoroquinolones계 항균제에 대한 감수성 여부를 확인하고자 하였다. 방법 : 항균제 감수성 검사는 3% 말혈액이 첨가된 Mueller-Hinton broth를 사용한 액체배지 미량희석법을 이용하여 NCCLS에서 제시한 방법에 준하여 실시하였다. 결과 : MIC_90를 기준으로 하였을 때 본 실험에서 사용한 5가지의 fluoroquinolones계 한균제 중 gatifloxacin과 moxifloxacin(MIC_90, 0.5㎍/㎖)이 ciprofloxacin (MIC_90, 4㎍/㎖), levofloxacin (mic_90, 2㎍/㎖) sparfloxacin (MIC_90, 1㎍/㎖)에 비해 penicillin 내성 폐렴구균에 대한 항균력이 높게 나타났다. 결론 : 5가지의 fluoroquinolones계 항생제 중 최근들어 새로이 개발된 항생제인 moxifloxacin과 gatifloxacin이 ciprofloxacin, levofloxacin, sparfloxacin보다 폐렴구균에 대한 더 우수한 항균력을 가지고 있음을 확인하였다. 한편, 국내 페니실링 고도 내성 폐렴구균에서 fluoroquinolones에 대한 고도 내성을 보이는 균주의 출현은 fluoroquinolones 내성 균주의 급속한 증가와 확산에 대한 지속적인 감시와 대책 마련이 요구된다. Background : Recently the rapid increase and global spread of penicillin-resistant S. pneumoniae has become a serious problem. In the 1990s, a varisty of novel fluoroquinolones with enhanced activity against gram-positive bacteria have been developed and used for the treatment of pneumococcal infections. In such situations, the fluoroquinolone-resistance in S. pneumonaie has been reported from many countries. In this study, we compared the activity of ciprofloxacin, levofloxacin, sparfloxacin, gatifloxacin and moxifloxacin against 93 isolates of S. pneumoniae which were highly- resistant to penicillin (MIC 2~8㎍/㎖). methods : Antimicrobial susceptibilities were determined by the broth microdilution method in cation-adjusted Muller-Hinton broth supplemented with 3% lysed horse blood according to the guidelines of the National Committee for Laboratory Standards (NCCLS). Results : Based on MIC_90s, sparfloxacin and moxifloxacin were the most potent fluoroquinolone tested against penicillin-resistant S. pneumoniae and retained excellent activity comparable with ciprofloxacin and levofloxacin. The rank order of bactericidal activity was ciprofloxacin (least active)《 levofloxacin 〈 sparfloxacin 〈 gatifloxacin and moxifloxacin (most active). Conclusion : In this study, the newer fluoroquinolones (moxifloxacin, sparfloxacin)showed improved activity over that observed with ciprofloxacin, levofloxacin, and sparfloxacin. The emergence of highly resistance to fluoroquinolones among penicillin-resistant pneumococci in Korea call for continuous attention and strategies to prevent rapid increase and spread of these strains.

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