• 한국재료학회지
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• 제26권12호
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• pp.704-708
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• 2016

The unique characteristics of graphene make it an optimal material for crucial studies; likewise, its potential applications are numerous. Graphene's characteristics change with the number of total layers, and thus the rapid and accurate estimation of the number of graphene layers is essential. In this work, we review the methods till date used to identify the number of layers but they incorporate certain drawbacks and limitations. To overcome the limitations, a combination of these methods will provide a direct approach to identify the number of layers. Here we correlate the data obtained from Raman spectroscopy, optical microscopy images, and atomic force microscopy to identify the number of graphene layers. Among these methods, correlation of optical microscopy images with Raman spectroscopy data is proposed as a more direct approach to reliably determine the number of graphene layers.

• 동서간호학연구지
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• 제23권2호
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• pp.180-189
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• 2017

Purpose: This study was conducted to identify the perception of and attitude toward dementia and depression among residents in a community. Methods: Data were collected using the questionnaire from 226 residents in Incheon city from February to May, 2017. The data were analyzed using t-test, ANOVA and Scheffe's test to identify differences in perception of and attitude toward dementia and depression. Pearson correlation coefficients were used to identify the correlation between the study variables, and multiple regression was used to identify factors affecting depression. Results: There were significant differences in perception of dementia according to age, education, marital status, and exercise. Also, significant differences in attitude toward dementia were found in occupation, family history of dementia and education about dementia. Depression was significantly different depending on the type of health insurance coverage and alcohol drinking. The scores of perception of dementia and depression were 11.09, 2.37, respectively on a 2-point scale and for attitude toward dementia was 85.94 on a 7-point Likert scale. The perception of dementia was positively correlated with the attitude toward dementia and there were negative correlations between perception of dementia and age and between depression and attitude toward dementia. Conclusion: The results of this study suggest that we should improve perception of and attitude toward dementia and reduce depression to prevent and manage dementia effectively.

• 한국소음진동공학회논문집
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• 제20권11호
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• pp.1089-1096
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• 2010

The relation between the vibration induced from machinery and the radiated sound is complicated. Acoustic intensity method is widely used to obtain the accuracy of noise measurement and noise identification. In this study, as groundwork, the complex acoustic intensity method is performed to identify noise source and transmission path on different free space point source fields. As an industrial application, the complex acoustic intensity method is applied to HVAC to identify sound radiation characteristics in the near field. Experimental complex acoustic intensity method was applied to HVAC, it is possible to identify noise sources in complicated sound field characteristics which noise sources are related with each other, and certificate the validity of complex acoustic intensity. Especially, it can be seen that complex acoustic intensity method using both of active and reactive intensity is vital in devising a strategy for identification of noise. Also, the vector flow of acoustic intensity was investigated to identify sound intensity distributions and energy flow in the near field of HVAC.

• 한국전자통신학회논문지
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• 제10권2호
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• pp.157-164
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• 2015

본 논문은 낙동강 하류 지역 부유쓰레기에 대한 실시간 이동 경로 추적과 수문기상환경 분석을 통해 구체적인 하구 유출 특성을 파악하고자 하였다. 부유쓰레기의 이동 및 하구 유출 경로를 파악하기 위해 위성 위치발신기를 장착한 소형 부이를 활용하였다. 그리고 수문기상환경을 파악하기 위해 하천 유량 및 하구둑 방류량변화, 하구역의 풍향에 대한 분석을 수행하였다. 향후 본 연구 결과는 집중호우시 낙동강 부유쓰레기의 연안유출 여부와 피해 범위를 파악하는데 기초 자료로 활용할 수 있을 것으로 기대된다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2018년도 학술발표회
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• pp.499-499
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• 2018

Hydro-meteorological extremes are trivial in these days. Therefore, it is important to identify extreme hydrological events in advance to mitigate the damage due to the extreme events. In this context, exploring temporal distribution of sub-daily extreme rainfall at multiple rain gauges would informative to identify different states to describe severity of the disaster. This study proposehidden Markov chain model (HMM) based rainfall analysis tool to understand the temporal sub-daily rainfall patterns over South Korea. Hourly and daily rainfall data between 1961 and 2017 for 92 stations were used for the study. HMM was applied to daily rainfall series to identify an observed hidden state associated with rainfall frequency and intensity, and further utilized the estimated hidden states to derive a temporal distribution of daily extreme rainfall. Transition between states over time was clearly identified, because HMM obviously identifies the temporal dependence in the daily rainfall states. The proposed HMM was very useful tool to derive the temporal attributes of the daily rainfall in South Korea. Further, daily rainfall series were disaggregated into sub-daily rainfall sequences based on the temporal distribution of hourly rainfall data.

• 융합보안논문지
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• 제17권5호
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• pp.71-76
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• 2017

오늘날은 다수의 정보자산 내 중요 데이터를 다수의 사용자가 필요에 의해, 필요한 만큼 접근하여 열람하고 있는 정보화 사회이다. 이러한 복잡함 속에서 중요 정보 자산에 대해 허가된 사용자의 접근을 확인하고, 사용 이력을 관리하기 위해 계정관리 관련 기술이 적용되고 있다. 그러나 계정을 이용해 중요/민감 정보를 열람할 수 있다는 점은 이것이 탈취 당했을 때 공격자에게 정보 절취의 길을 열어줄 수 있게 된다는 단점이 있다. 따라서 본 논문에서는 계정 소유주의 근태에 기반하여 계정의 사용 유무를 통제할 수 있으면서도, 보안성은 높였고, 편의성 저해도 없는 안전한 계정관리시스템을 제안하였다. 제안된 시스템은 계정 소유주가 업무 목적으로만 계정을 사용할 수 있도록 허가된 기간 내에 2-Factor 인증을 통해 로그인을 허용한다. 이를 통해 계정 유휴 기간 내 발생할 수도 있는 정보 유출을 사전에 차단할 수 있다.

• 대한안전경영과학회지
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• 제24권1호
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• pp.11-19
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• 2022

In order to find out the management and sanitation status of protective gear provided at the construction site, a case study and survey were conducted by visiting the site. As a result of the case study, inspection and management, disinfection, and storage of protective equipment were insufficient in both workplaces with less than 50 employees and workplaces with more than 100 employees. As a result of the survey, workers(66.2%), said they did not know how to identify hard hats(67.6.%), how to identify bad hard hats(60.8%), and how to identify bad safety belts (73.0%), even though workers(66.2%) were educated on protective gear, and those in charge of protective gear Non-specified(56.8%), regular inspection of the provided protective equipment was not performed(82.4%), and disinfection was not performed(90.5%). Therefore, as a management plan to maintain the performance of personal protective equipment, educational aspects, regular training on protective equipment, training on how to identify defective protective equipment, management of recording papers, technical aspects, strengthening of standards for placement of dedicated safety managers in small workplaces, participation of workers' representatives when selecting protective equipment, and selection of protective equipment for workers Providing opportunities, administrative aspects of protective equipment regulation and management, introduction of sanitary and cleanliness system, and selection of personnel in charge of protective equipment management were suggested.

• 정보교육학회논문지
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• 제14권4호
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• pp.637-649
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• 2010

지금 학교에서는 소품종 다량 생산이라는 시대의 변화에 발맞추어 학생 개개인의 재능을 진단하고 육성하기 위한 다양한 시도가 지속적으로 이루어지고 있다. 그러나 현장에서는 학생 개별 재능을 파악하는데 도움을 주는 시스템이 개발되어 활용되고 있지 않다. 본 연구에서는 학생 개별 재능 진단 육성에 도움을 주고자 혼합형 종합재능기록시스템을 설계 및 구현하여 효과를 검증해 보았다. 교사와 학부모는 관찰, 검사지, 수상기록 분석, 방과후 활동 분석 등의 방법으로 학생 개별 재능을 파악하였고 학생은 다중지능검사를 통하여 자신의 재능을 파악하였다. 본 시스템을 개발하여 적용한 결과, 교사는 개별 아동의 재능을 발견할 수 있는 기회가 되었으며, 학부모 또한 학생 개별 재능을 파악하는데 도움을 주었으며 이를 활용한 다양한 교육활동으로 다중지능이 육성되었다.

• 대한간호
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• 제37권1호
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• pp.107-115
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• 1998

There is an important concern regarding the First-line nurse manager's leadership because of the recognition that effectiveness of Leadership in this position results in benefits for the whole health care organization. So knowledge and practice of effective leadership behavior are now more essential to nursing than ever before. First-line Nurse Managers must be effective leaders to meet today's challenge because staff nurse, patient are affected by them. So the purpose of this study was to identify and to analyse the need for Leadership program of First-Line nurse managers in university hospitals. There were three major purposes of this study. First, identify First-line nurse managers general characteristic, second, identify their experience of leadership training, third, identify and analysis their demands for leadership training program. The subjects for this study was 167 First-line nurse manager randomly from 18 university hospitals in Korea. The data were collected through questionnaires from Oct. 13th to Nov. 20th, 1997, data was analysed using frequencies and percentages. Especially the steps of analysis of descriptions were as follows: Initial analysis centered on the identification of the demands of first-line nurse managers. Later analysis collapsed the demands into broad categories. From the collect data, 283 demands of first-line nurse managers were identified. These demands were then sorted into 3 broad categories that included : Self development as first-line nurse managers, relationship with others, and practice. The result of the study were as follows ; 1) Most of nurse managers(79.6%) had leadership training course and had good experience to improve self leadership. 2) Their demands of leadership training course are as follows First, for self as first-line nurse managers, they want to learn leadership theory, identify their leadership style and then develop their leadership skill. Second, for others as first-line nurse managers, they want to improve their communication skill, empowering others, relationship with others. Third, for patients as first-line nurse managers, improve their knowledge of practice. From the above finding, this study can be suggested the following; 1. Develope a leadership training course to improve first- line nurse manager's leadership skill according to their demands, so they will be better able to lead staff nurses for organization purposes. 2. When develope leadership training program, it must be contained the factors which first-line nurse managers want to learn.

• 한국임상수의학회지
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• 제34권2호
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• pp.146-151
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• 2017

Six major outbreaks of highly pathogenic avian influenza (HPAI) occurred from 2003 to 2016 in Korea. Epidemiological investigations of each outbreak revealed that migratory birds were the primary source of the HPAI virus. During the last five years, the geographic transmission pattern of domestic HPAI seems to have extended from local to nationwide; therefore, it is necessary to identify specific locations in which poultry farms are at elevated risk for HPAI outbreak to enable targeted surveillance and other mitigation strategies. Here, a geographical information system (GIS)-based analysis was used to identify geographic areas at high risk for future HPAI incidents in Korea based on historical outbreak data collected between December 2003 and April 2016. To accomplish this, seven criteria were used to identify areas at high-risk for HPAI occurrence. The first three criteria were based on defined spatial criteria buffering of 200 bird migration sites to some defined extents and the historical incidence of HPAI outbreaks at the buffering sites. The remaining criteria were based on combined attribute information such as number of birds or farms at district levels. Based on the criteria established for this study, the most-likely areas at higher risk for HPAI outbreak were located in Chungcheong, Jeolla, Gyeonggi, and Gyeongnam provinces, which are densely populated poultry regions considered major poultry-production areas that are located along bird migration sites. The proportion of areas at risk for HPAI occurrence ranged from 4.5% to 64.9%. For the worst criteria, all nine provinces, including Jeju Island, were found to be at risk of HPAI. The results of this study indicate that the number of poultry farms at risk for HPAI outbreaks is largely underestimated by current regulatory risk assessment procedures conducted for biosecurity authorization. The HPAI risk map generated in this study will enable easy use of information by policy makers to identify surveillance zones and employ targeted surveillance to reduce the impact of HPAI transmission.