• 한국산학기술학회논문지
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• 제17권4호
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• pp.710-717
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• 2016

본 연구는 시뮬레이션을 활용한 외상환자 실습교육이 응급구조학과 학생들의 지식과 만족도 및 문제해결에 미치는 효과를 평가하고자 조사하였다. 이를 위해 2015년 3월 3일부터 3월 31일까지 진행하였다. 수집된 자료를 분석하기 위하여 SPSS Win 20.0을 사용하였으며, 대상자의 일반적 특성은 빈도분석 및 동질성 검사, 시뮬레이션을 활용한 외상환자 실습교육 후 지식 및 문제해결은 t-test와 수업만족도의 하위요인인 피어슨상관관계를 이용하였다. 일개 대학의 응급구조학과 학생들의 교육의 적절성을 규명하기 위하여 남녀 학생 28명을 대상으로 실험군 14명과 대조군 14명으로 두 집단으로 나누어 비교하였다. 실험군은 시뮬레이터를 적용한 외상환자 시뮬레이션을 실습교육을 대조군은 전통적인 강의식 수업을 통해 이론 및 실기교육을 실시하였다. 연구결과 4주간의 각각의 교육방식을 진행 후 사후 지식조사와 만족도에 있어서 대조군에 비해 실험군이 유의하게 더 높은 것을 알 수 있다(t=2.09, p<.05). 또한, 만족도 하위요인의 변수간의 상관관계 결과 흥미와 임상에 도움, 또는 흥미와 문제해결능력간의 상관관계를 보였다(p<.05, p<.01). 본 연구 결과를 기초로 응급구조학과의 시뮬레이션 실습교육이 필요하고 적절한 시나리오 개발을 통해 지속적으로 실습교육을 적용해야 할 것으로 사료된다.

• 대한수학회지
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• 제59권3호
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• pp.621-634
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• 2022

The scaled inverse of a nonzero element a(x) ∈ ℤ[x]/f(x), where f(x) is an irreducible polynomial over ℤ, is the element b(x) ∈ ℤ[x]/f(x) such that a(x)b(x) = c (mod f(x)) for the smallest possible positive integer scale c. In this paper, we investigate the scaled inverse of (xⁱ - x^j) modulo cyclotomic polynomial of the form Φ_p^s (x) or Φ_p^sq^t (x), where p, q are primes with p < q and s, t are positive integers. Our main results are that the coefficient size of the scaled inverse of (xⁱ - x^j) is bounded by p - 1 with the scale p modulo Φ_p^s (x), and is bounded by q - 1 with the scale not greater than q modulo Φ_p^sq^t (x). Previously, the analogous result on cyclotomic polynomials of the form Φ_2ⁿ (x) gave rise to many lattice-based cryptosystems, especially, zero-knowledge proofs. Our result provides more flexible choice of cyclotomic polynomials in such cryptosystems. Along the way of proving the theorems, we also prove several properties of {x^k}_k∈ℤ in ℤ[x]/Φ_pq(x) which might be of independent interest.

• 한국보건간호학회지
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• 제30권3호
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• pp.456-469
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• 2016

Purpose: The purpose of this study was to investigate the awareness of Korean unification and health care in healthcare professional students. Methods: Descriptive survey design was used, and self administered questionnaires were collected from 567 participants. The data were analyzed using descriptive statistics, chi-square test, ANOVA, and scheffe test. Results: A total of 279(54.4%) students answered that Korean unification is needed. The mean score of attentiveness to Korean unification was 5.27(${\pm}2.10$) out of 10, and the mean score of interest on health care for unification was 4.28(${\pm}2.26$). The degree of interest in Korean unification was significantly associated with the degree of health care for unification(p<.001). The mean score of necessity regarding health care education for unification was 5.59(${\pm}2.15$) out of 10, which was proportional to the degree of interest in the Korean unification(p<.001). The mean score of knowledge regarding North Korea's medical status was 2.35(${\pm}1.17$) out of 10. Conclusion: Based on the study results, continuous education about unification as well as health care for unification is required in order to increase awareness of Korean unification and healthcare in students. Furthermore, additional studies to better understand nursing care systems of North Korea and to identify the roles of nurses in the unification process and public healthcare of unified Korea are needed.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제27권1호
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• pp.111-127
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• 2024

There is an increasing concern in the United States regarding the workforce's ability to maintain a competitive position in the global economy. This has led to an increased interest in effective science, technology, engineering, and mathematics (STEM) education. The purpose of this study was to investigate the effect of STEM project-based learning (PBL) on students' self-regulation and motivation to learn. Secondary students (n = 60) participated in a STEM summer camp in which STEM PBL was utilized. Results showed that students increased their self-regulation skills (t = 2.83, df = 59, p = .004) and motivation (t = 2.25, df = 59, p =.004), with Cohen's d effect sizes of 0.395 and 0.404, respectively. Student-centered learning and peer collaboration while solving real-world problems were likely the greatest contributing factors to the outcomes. Educators should utilize the results to provide opportunities for students to experience STEM PBL.

• 한국컴퓨터정보학회논문지
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• 제17권4호
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• pp.19-29
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• 2012

최근 PISA와 TIMSS 연구에 따르면 우리나라 학생들은 수학과 과학에 대한 높은 성취 결과에 비해 교과의 흥미는 매우 낮은 것으로 나타났다. 본 연구의 목적은 초등학교에서 로봇 활용 STEAM 교육이 수학 학습태도 및 과학 학습동기에 미치는 영향을 검증하는데 있다. 이러한 목적을 달성하기 위해 실험집단에는 과학, 수학, 미술교과를 '에너지'라는 주제로 로봇활용 융합적인 STEAM 수업을 실시하였고 통제집단은 세 교과를 분과적인 방식으로 수업하였다. 로봇활용 STEAM교육 수업을 위해 4학년 2학기 수학, 과학, 미술교육과정을 분석하였으며 선택된 '에너지' 주제를 중심으로 STEAM 수업모형을 설계하고 적용하였다. 과학수업은 로봇을 활용하여 열전달 실험을 실시하였으며 얻어진 실험결과는 수학수업의 꺾은선그래프 단원에 연계하였다. 미술수업에서는 열에너지의 느낌을 형과 색으로 표현해보고 상상 표현을 위해 로봇부품을 활용 하였다. 연구결과 로봇활용 STEAM 수업을 실시한 실험집단에서 전통적 교과수업보다 수학 학습태도 및 과학 학습동기가 높게 나타났다(p<.05). 이와 같은 결과는 초등학교에서 로봇활용 STEAM 수업이 수학 및 과학의 흥미 신장에 효과적임을 입증하였다.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2003년도 생물공학의 동향(XII)
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• pp.582-586
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• 2003

There has been interest in developing gene therapy based on naked plasmid DNA for treating serum protein deficiencies and human erythropoietin (hEPO) is one of the candidate for gene therapy being Investigated most enthusiastically. We constructed novel plasmid DNA vectors pVAC-hEPOI/II/III which contain one, two, three hEPO gene(s) respectively for producing high level expression and secretion of hEPO in vitro and in vivo. NIH3T3 and COS7 cells were transfected transiently with these vectors and increase in hEPO expression in medium reached 2-5 fold in comparison with pSecTagB-hEPO. Intra muscular administrations of pVAC-hEPOI/II/III vectors into mice resulted in high level secretion of hEPO in the serum and corresponding increases in hematocrit level. In conclusion the transduction efficiency of naked plasmid vectors is one of the critical factors of a gene delivery system and these novel plasmid vectors will contribute to various gene therapy based on naked plasmid DNA.

• Journal of Korean Biological Nursing Science
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• 제15권4호
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• pp.155-163
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• 2013

Purpose: The purpose of this study was to identify the mediating effect of confidence for drug calculation in the relationship between interest in medication and drug calculation competency using learning style. Methods: Participants in this study were 421 nursing students from Busan and Kyungnam province. The scales of learning style, interest in medication, importance of perception, confidence for drug calculation, and drug calculation competency for nursing students were used in this study. Descriptive statistics, $X^2$-test, t-test, Pearson correlation coefficient, and stepwise multiple regression were used for data analysis. Results: Learning styles of the participants were diverger 19.0%, accommodator 30.9%, converger 21.1%, and assimilator 29.0%. The drug dose calculation competency of participants was relatively low with a mean score 66.73. There were significant positive correlations among drug dose calculation competency, interest in medication (r=.31, p<.001), and confidence for drug calculation (r=.44, p<.001). Confidence for drug calculation was a moderator between interests in medication and drug calculation competency. Conclusion: Based on the result of this study, confidence for drug calculation promoting strategy such as medication reconciliation and various learning technology for improving drug calculation competency are needed.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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• pp.434.2-434.2
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• 2014

We observe enhanced pH response of solution-gated field-effect transistors (SG-FET) having 1D-2D hybrid channel of vertical grown ZnO nanorods grown on CVD graphene (Gr). In recent years, SG-FET based on Gr has received a lot of attention for biochemical sensing applications, because Gr has outstanding properties such as high sensitivity, low detection limit, label-free electrical detection, and so on. However, low-defect CVD Gr has hardly pH responsive due to lack of hydroxyl group on Gr surface. On the other hand, ZnO, consists of stable wurtzite structure, has attracted much interest due to its unique properties and wide range of applications in optoelectronics, biosensors, medical sciences, etc. Especially, ZnO were easily grown as vertical nanorods by hydrothermal method and ZnO nanostructures have higher sensitivity to environments than planar structures due to plentiful hydroxyl group on their surface. We prepared for ZnO nanorods vertically grown on CVD Gr (ZnO nanorods/Gr hybrid channel) and to fabricate SG-FET subsequently. We have analyzed hybrid channel FETs showing transfer characteristics similar to that of pristine Gr FETs and charge neutrality point (CNP) shifts along proton concentration in solution, which can determine pH level of solution. Hybrid channel SG-FET sensors led to increase in pH sensitivity up to 500%, compared to pristine Gr SG-FET sensors. We confirmed plentiful hydroxyl groups on ZnO nanorod surface interact with protons in solution, which causes shifts of CNP. The morphology and electrical characteristics of hybrid channel SG-FET were characterized by FE-SEM and semiconductor parameter analyzer, respectively. Sensitivity and sensing mechanism of ZnO nanorods/Gr hybrid channel FET will be discussed in detail.

• 한국지구과학회지
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• 제25권8호
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• pp.748-753
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• 2004

;이 연구의 목적은 SF(Science Fiction)영화를 활용한 교육용 웹 콘텐츠를 개발하여 과학 수업에 적용함으로서 학습 효과를 알아보는 데 있다. 중학교 2학년 과학 교과 중 “지구와 별” 단원수업에 활용할 수 있는 SF영화 3종류, “아마겟돈”, “아폴로13”, “토탈리콜”을 선정하고 영화의 내용 중 과학 하습 자료로 활용할 수 있는 WBI용 웹 콘텐츠를 제작하였다. 개발된 학습 자료를 2대 학습 학생들을 대상으로 수업에 적용하고 ‘SF영화를 수업에 활용하는 데 대한 학생들의 인식 변화’와 ‘과학과 관련된 태도 변화’를 조사하였다. 그 결과 수업 전보다 수업 후에 ‘SF영화는 과학 교과 내용과 관련된 것이 많고 웹을 이용한 과학 수업이 효과가 있다’고 응답하였으나(p<0.05), ‘과학과 관련된 태도 변화’에는 유의미한 차이를 보이지 않았다(p>0.05). 그러나 학생들에게 과학에 대한 흥미를 높이고 학습 효과를 증진시키는 데 기여할 수 있음을 알 수 있었다. 또 웹을 이용한 학습은 시간과 장소에 구애받지 않고 보다 쉽게 과학에 접근할 수 있는 효율적인 학습방법이라는 것도 알 수 있었다.

• Smart Structures and Systems
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• 제2권2호
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• pp.115-126
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• 2006

The Terra-Scope system is an affordable 4-D down-hole seismic monitoring system based on independent, microprocessor-controlled sensor Pods. The Pods are nominally 50 mm in diameter, and about 120 mm long. They are expected to cost approximately $6000 each. An internal 16-bit, extremely low power MCU controls all aspects of instrumentation, eight programmable gain amplifiers, and local signal storage. Each Pod measures 3-D acceleration, tilt, azimuth, temperature, and other parametric variables such as pore water pressure and pH. Each Pod communicates over a standard digital bus (RS-485) through a completely web-based GUI interface, and has a power consumption of less than 400 mW. Three-dimensional acceleration is measured by pure digital force-balance MEMS-based accelerometers. These accelerometers have a dynamic range of more than 115 dB and a frequency response from DC to 1000 Hz with a noise floor of less than $30ng_{rms}/{\surd}Hz$. Accelerations above 0.2 g are measured by a second set of MEMS-based accelerometers, giving a full 160 dB dynamic range. This paper describes the system design and the cooperative shared-time scheduler implemented for this project. Restraints accounted for include multiple data streams, integration of multiple free agents, interaction with the asynchronous world, and hardened time stamping of accelerometer data. The prototype of the device is currently undergoing evaluation. The first array will be installed in the spring of 2006.