• 디지털융복합연구
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• 제12권5호
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• pp.415-423
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• 2014

본 연구는 정부의 마리나항만 조성 사업, 저수지개발특별법 시행, 수상레저안전법의 개정 등으로 수상레저 스포츠가 확대될 것에 대비하고자 대학교양체육의 현황을 파악하고 그 역할을 재조명하고자 관련 문헌을 수집 분석하고 전국 12개 지역 17개 국공립대학의 대학교양체육 교과과정을 분석하였다. 대학의 교양체육은 평생스포츠의 실현능력을 양성하는 교양체육 본연의 목적을 달성하기 위하여 앞으로 다가올 수상레저스포츠 시대에 대비한 교육을 실시해야 한다. 이를 통해 모든 국민들이 수상레저스포츠를 접하면서 윤택한 삶을 살게 될 것으로 전망한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권5호
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• pp.2338-2356
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• 2019

Vehicular ad-hoc network (VANET) is the name of technology, which uses 'mobile internet' to facilitate communication between vehicles. The aim is to ensure road safety and achieve secure communication. Therefore, the reliability of this type of networks is a serious concern. The reliability of VANET is dependent upon proper communication between vehicles within a given amount of time. Therefore a new formula is introduced, the terms of the new formula correspond 1 by 1 to a class special ST route (SRORT). The new formula terms are much lesser than the Inclusion-Exclusion principle. An algorithm for the Source-to-Terminal reliability was presented, the algorithm produced Source-to-Terminal reliability or computed a Source-to-Terminal reliability expression by calculating a class of special networks of the given network. Since the architecture of this class of networks which need to be computed was comparatively trivial, the performance of the new algorithm was superior to the Inclusion-Exclusion principle. Also, we introduce a mobility metric called universal speed factor (USF) which is the extension of the existing speed factor, that suppose same speed of all vehicles at every time. The USF describes an exact relation between the relative speed of consecutive vehicles and the headway distance. The connectivity of vehicles in different mobile situations is analyzed using USF i.e., slow mobility connectivity, static connectivity, and high mobility connectivity. It is observed that $p_c$ probability of connectivity is directly proportional to the mean speed ${\mu}_{\nu}$ till specified threshold ${\mu}_{\tau}$, and decreases after ${\mu}_{\tau}$. Finally, the congested network is connected strongly as compared to the sparse network as shown in the simulation results.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제26권4호
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• pp.185-223
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• 2022

The classical equation of Jonathan Homer Lane and Robert Emden, a nonlinear second-order ordinary differential equation, models the isothermal spherical clouded gases under the influence of the mutual attractive interaction between the gases' molecules. In this paper, the Adomian decomposition method (ADM) is presented to obtain highly accurate and reliable analytical solutions of a class of generalised Lane-Emden equations with strong nonlinearities. The nonlinear term f(y(x)) of the proposed problem is given by the integer powers of a continuous real-valued function h(y(x)), that is, f(y(x)) = h^m(y(x)), for integer m ≥ 0, real x > 0. In the end, numerical comparisons are presented between the analytical results obtained using the ADM and numerical solutions using the eighth-order nested second derivative two-step Runge-Kutta method (NSDTSRKM) to illustrate the reliability, accuracy, effectiveness and convenience of the proposed methods. The special cases h(y) = sin y(x), cos y(x); h(y) = sinh y(x), cosh y(x) are considered explicitly using both methods. Interestingly, in each of these methods, a unified result is presented for an integer power of any continuous real-valued function - compared with the case by case computations for the nonlinear functions f(y). The results presented in this paper are a generalisation of several published results. Several examples are given to illustrate the proposed methods. Tables of expansion coefficients of the series solutions of some special Lane-Emden type equations are presented. Comparisons of the two results indicate that both methods are reliably and accurately efficient in solving a class of singular strongly nonlinear ordinary differential equations.

• 대한간호학회지
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• 제20권1호
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• pp.16-37
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• 1990

A cost analysis for hospitalized patients was carried out based upon Patient Classification System(PCS) in order to determine an appropriate nursing fee. The data were collected from 21 nursing units of three teaching hospitals from April 1 to June 30, 1989. first, all of the 22,056 inpatients were classified into mildly ill(Class Ⅰ), moderately ill(Class Ⅱ), acutely ill(Class Ⅲ), and critically ill(Class Ⅳ) by the PCS which had been carefully developed to be suitable for the Korean nursing units. Second. PCS cost accounting was applied to the above data. The distribution of inpatients, nursing costs, and nursing productivity were as follows : 1) Patient distribution ranged from 45% to class Ⅰ, 36% to class Ⅱ, 15% to class Ⅲ, and 4% to class Ⅳ, the proportion of class Ⅳ in ‘H’ Hospital was greater than that of the other two hospitals. 2) The proportion of Class Ⅲ and Ⅳ in the medical nursing units was greater than that of surgical nursing units. 3) The number of inpatients was greatest on Tuesdays, and least on Sundays. 4) The average nursing cost per hour was W 3,164 for ‘S’ hospital, W 3,511 for ‘H’ hospital and W 4,824 for ‘K’ hospital. The average nursing cost per patient per day was W 14,126 for ‘S’ Hospital, W 15,842 for ‘H’ hospital and W 21,525 for ‘K’ hospital. 5) The average nursing cost calculated by the PCS was W 13,232 for class Ⅰ, W 18,478 for class Ⅱ, W 23,000 for class Ⅲ, and W 25,469 for class Ⅳ. 6) The average nursing cost for the medical and surgical nursing units was W 13,180 and W 13,303 respetively for class Ⅰ, W 18,248 and W 18,707 for class Ⅱ, W 22,303 and W 23,696 for class Ⅲ, and W 24,331 and W 26,606 for class Ⅳ. 7) The nursing costs were composed of 85% for wages and fringe benefits, 3% for material supplies and 12% for overhead. The proportion of wages and fringe benefits among the three Hospitals ranged from 75%, 92% and 98% for the ‘S’, ‘H’, ‘K’ hospitals respectively These findings explain why the average nursing cost of ‘K’ hospital was higher than the others. 8) According to a multi- regression analysis, wages and fringe benefits, material supplies, and overhead had an equal influence on determining the nursing cost while the nursing hours had less influence. 9) The productivity of the medical nursing units were higher than the surgical nursing units, productivity of the D(TS) - nursing units was the lowest while the K(Med) - nursing unit was the highest in 'S' hospital. In ‘H’ hospital, productivity was related to the number of inpatients rather than to the characteristics of the nursing units. The ‘K’ hospital showed the same trend as ‘S’ hospital, that the productivity of the medical nursing unit was higher than the surgical nursing unit. The productivity of ‘S’ hospital was evaluated the highest followed by ‘H’ hospital and ‘K’ hospital. Future research on nursing costs should be extended to the other special nursing areas such as pediatric and psychiatric nursing units, and to ICU or operating rooms. Further, the PCS tool should be carefully evaluated for its appropriateness to all levels of institutions(primary, secondary, tertiary). This study took account only of the quantity of nursing services when developing the PCS tool for evaluating the productivity of nursing units. Future research should also consider the quality of nursing services including the appropriateness of nursing activities.

• 한국초등상담교육학회:학술대회논문집
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• 한국초등상담교육학회 2004년도 학술대회
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• pp.17-40
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• 2004

This article tried to show a new paradigm for elementary school counseling in Korea. Counseling in Korean elementary school has focused on the individual child and/or group of the children without considering school circumstances. But school has some special features which have to be counted for the efficiency of child counseling. Take for an example, children have to spend most of their day time with a class teacher for 6 days a week. So the talks and behaviors of the class teacher have strong influence on the children. These factors should be included in the elementary school counseling to help children grow up and develop. : Six main topics discussed in this articles were as follows. 1. Developmental tasks of Korean children have to be searched and organized. 2. The concept of class management has to be combined with the concept of counseling. 3. Establishing the conditions to facilitate subject learning has to be emphasized in the school counseling. 4. Counseling instruments applicable to the children should be developed. 5. The proper knowledge of teacher's way cf talking and behaving in class life should be organized. 6. The resources of school counseling should be identified and interconnected to provide better counseling service to the children.

• 한국방재안전학회논문집
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• 제10권2호
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• pp.43-47
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• 2017

지난 22년 동안 '시설물안전관리에 관한 특별법'에 의해 관리된 1, 2종 시설물의 안전사고는 전무 하지만, 나머지 시설물인 소규모 시설물들에 대해서는 체계적인 관리를 하지 못하고 있어 이 시 설물의 안전사고는 매년 증가하고 있다. 이에 정부에서는 소규모 시설물의 일부를 3종 시설물로 정하여 안전점검을 법제화하여 시행 예정이다. 이 논문에서는 3종 시설물 중 건축물에 대한 안전 관리 현황을 분석하고 이를 바탕으로 소규모 건축물에 대한 안전성 향상을 위한 방안을 제안하고 자 한다.

• 복식
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• 제56권1호
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• pp.131-142
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• 2006

This research has been done based on the Jeon Si Gwa(田柴科) regulation, the monumental inscription material and the former studies. The background of adapting the official uniform regulation in the early Goryeo Dynasty has been surveyed. Differentiating criterion in the official uniform color like purple(紫衫), red(丹衫), red(緋衫), and green(綠衫) has been studied. The official rank had been classified by the color of the official uniform in the early Goryeo uniform regulation. The lower class had worn purple(紫衫). The purple wearing class had not been the government post but the official rank. Those who worked for the Palace had worn purple color since purple color represented the Imperial Palace on which TAI-IL(太一), that is, the highest one of gods dwelt. Those who had worn red(丹色) in the monumental inscription had worked for the job associated with the military service or Hanlim savant(翰林學士) of Kwangmun Academy(光文院) and Hanlim Academy(翰林元). Dan Seo(丹書) which recorded King's commands also means the monumental inscription. In the Goryeosa(高麗史), the military class had been only in Dan Sam(丹衫). That means those class worn Dan Sam(丹衫) could have been as the strong supportive class for the Dynasty. In the early Goryeo Dynasty, the four colored uniform regulation had followed the enforcing policy of the royal authority. It has been assumed that the uniform regulation had been used as a way of enrolling the new supporting class into the existing official system. Dan Sam(丹衫) which had been worn only in the early Goryeo can be seen as the special class for strengthening the royal authority.

• 한국융합학회논문지
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• 제12권2호
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• pp.155-162
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• 2021

이 연구의 목적은 가상현실 기반 중재가 지적장애 학생의 일상생활 기술과 수업태도에 미치는 영향을 파악하는 것이었다. 전남지역에 거주하는 중학교 2-3학년 지적장애학생 30명을 연구대상으로 선정하였고, 중재방법에 따라 세 집단으로 배치하였다. A집단은 가상현실 프로그램을 이용하는 중재, B집단은 직접 체험 활동을 중심으로 하는 중재, C집단은 가상현실 프로그램과 직접 체험 활동을 결합한 중재에 참여하였다. 중재는 7월 4주부터 8월 3주까지 4주 동안 진행되었고, 일주일에 4회씩 총 16회기의 중재가 이루어졌다. 평가는 사전 평가와 사후 평가를 실시하였다. 수집된 자료는 일원분산분석으로 분석하였고, 사후 분석으로는 scheffe'를 사용하였다. 연구 결과, C집단이 A집단과 B집단보다 일상생활 기술을 유의미하게 향상시켰고, C집단은 B집단보다 수업태도를 유의미하게 향상시켰다. 이를 통해 가상현실 프로그램과 체험활동을 결합한 중재가 일상생활 기술 및 수업태도를 향상시킬 수 있는 효과적인 방법 중에 하나라는 것을 확인하였다.

• 디지털융복합연구
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• 제19권1호
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• pp.1-10
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• 2021

본 연구의 목적은 고등 수학교육에 있어서 스마트러닝기반의 수업이 학업성취도가 낮은 학생들에게 어떤 영향을 미치고 효과성은 어떠한지 분석하는 것이다. 본 연구는 2018년 G대학에서 공학인증 과목인 미적분학II를 수강하는 학생들 중 이전 학기 미적분학I에서 C학점 이하이고, 성취수준이 아주 낮은 학생들로 구성된 '특별반'에 속했던 학생들 중 미적분학II를 공학인증으로 받아야만 하는 16명의 학생들로 구성하여 진행되었다. 스마트폰의 앱에서 3D와 증강현실(AR)을 수업시간에 적극적으로 활용하였으며, 연구결과에 따르면 SNS와 중간고사와 기말고사의 문제분석 결과와 강의평가 결과를 통하여 공간에 대한 시각적 이해가 이루어졌음을 알 수 있었다. 또한 스마트폰의 앱을 활용한 스마트러닝기반 수학수업이 사전 학업성취도에 관계없이 학업성취도 증진 및 수학적 흥미와 태도에 긍정적인 영향을 미쳤음을 알 수 있었다.

• 대한건축학회논문집:구조계
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• 제35권12호
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• pp.137-148
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• 2019

Korean piloti-type buildings are comprised of pilotis in the first story and shear walls in the upper stories. This vertical irregularity causes excessive lateral plastic deformation on the first story while the upper stories stay elastic. Meanwhile, asymmetric position of structural components such as core walls and columns of RC piloti-type buildings tends to produce torsional irregularities of the structures. Korean Building Code(KBC2016) requires the special seismic load and torsional amplification factor to apply to the piloti-type buildings lower than six-story or 20m if it has vertical and torsional irregularities when the building corresponds to seismic design category C or D. Many Korean low-rised RC buildings fall into the class. Therefore, the special earthquake load and torsional amplification factor are often applied to a building simultaneously. However, it has not been studied enough how much influence each parameter has on buildings with vertical and torsional irregularities at the same time. The purpose of this study is to evaluate the effect of factor special seismic load and torsional amplification on seismic performance of irregular buildings. In this study, a damaged 4^th story piloti-type building by the Pohang earthquake was selected and the earthquake response analysis was carried out with various seismic design methods by the KBC 2016. The effect of the design parameters on seismic performance was analyzed by the dynamic analysis of models with special seismic load and torsional amplification factor based on the selected building. It was concluded that the application of the torsional amplification factor to the reference model to which special seismic design was applied, does not significantly affect the seismic performance.