• 대한치과기공학회지
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• 제34권4호
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• pp.403-412
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• 2012

Purpose: This study is conducted to evaluate the job stressors for dental technicians in Ulsan city. Methods: The Korean standard job stressors assessment tool developed by Korea Occupational Safety and Health Agency (KOSHA) was used to compare the survey result with Korean reference value. The questionnaire on the social, demographic and job characteristics of dental technicians was also used to find the factors affecting to job stressors by using multiple linear regression analysis. Results: A total of 155 questionnaire was collected from 2010 to 2011. Among the eight fields of stressors, the physical environment (men 50.0, women; 58.3) and job demands (men 57.1, women 57.1) were higher than the median value of the Korean Workers. By multiple linear regression analysis, the significant factors to the physical environment were the satisfaction degree of indoor odor, number of employee, duty and working hours. In terms of the job demand, duty, working hours, age, and the satisfaction to the efficiency of space utilization were significantly associated to the score of job demand. Conclusion: Based on these results, it is necessary to manage appropriate workload, control indoor odor and design an efficient work space for prevention of job stress of dental technicians.

• 동의신경정신과학회지
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• 제18권2호
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• pp.89-100
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• 2007

Objective : The purpose of this study is to examine relationship between cognitive function and sasang constitution by analyzing EEG status of company workers in Cheon-An. Method : 59 company workers were tested with cognitive assessment EEG program and questionaire for the Sasang Constitution Classification II. They were assorted by Sasang Constitutions, and we analyzed its correlation with cognitive assessment score and EEG data. Results : 1. According to mean active EEG rhythm of Alpha. H-Beta, Gamma wave, there were no significant difference among Sasang Constitution. 2. According to mean success, error, concentration, response, workload and left/right brain activity score, there were no significant difference among Sasang Constitution. 3. According to mean active EEG rhythm of Theta, SMR, M-Beta wave, Soyangin(少陽人)'s value was significantly higher than that of Taeumin(太陰人) 4. According to mean cognitive strenghth score, Soyangin(少陽人)'s value was significantly higher than that of Taeumin(太陰人). Conclusion : In conclusion, Sasang Constitutional difference has no relevance with cognitive abilities However, Soyangin(少陽人) showed higher mean active EEG rhythm of Theta, SMR, M-Beta wave than that of Taeumin(太陰人). In addition, Soyangin(少陽人) also showed higher mean cognitive strenghth score than that of Taeumin(太陰人).

• Safety and Health at Work
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• 제2권4호
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• pp.328-335
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• 2011

Objectives: Depressive disorder (DD) is a complex disease, and the assessment of work ability in patients with DD is also complicated. The checklist depression (CDp) has recently been developed to support such work ability assessments and has been recommended for implementation in insurance medicine, starting with an analysis of the organisational and social contexts. The aim of this study was to identify the potential facilitators and barriers in the use of the CDp by insurance physicians (IPs) during work ability assessments of employees on sick leave due to DD. Methods: A qualitative research was conducted based on semi-structured interviews. The participants were IPs with at least one year of work experience in performing work ability assessments. The interviews were audiotaped, transcribed and analysed qualitatively. Results: Ten IPs (7 males, 3 females; mean 53 years) were interviewed. Important facilitators, which emerged for use of the CDp, were an oral introduction for colleagues and staff, support from management, valuing the increased transparency in work ability assessments with using the CDp, having adequate time for assessments as well as modification of the appearance (colour, plasticised form) and content (clarifying aspects of the examples) of the assessment tool. The fear of the loss of autonomy, lack of added value of the CDp, high workload, inadequate instructions and lack of time were mentioned as barriers. Conclusion: Adequate introduction to the use of CDp and the fear of the loss of autonomy of IPs need special attention in planning its implementation.

• 대한인간공학회지
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• 제23권4호
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• pp.45-56
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• 2004

The purpose of this study is to evaluate perceived discomfort of working postures in terms of upper body (back, shoulder, and elbow) flexions when an external load varies. Eighteen subjects participated in an experiment of appraising perceived discomfort of varying upper body postures with three levels of external loads given. The ANOVA results showed that the perceived discomfort of upper body postures was significantly affected by the external load. It was also apparent that the interactions between external load and upper body posture were significant (p< 0.001). The result implies that a new posture classification scheme for workload assessment methods may be in need to reflect such interactions between external load and upper body posture. In order to support the statement, a regression model of perceived discomfort of upper body postures obtained from the experiment was developed and compared to that of perceived discomfort of seven work-related postures found in automobile assembly operations. The correlation coefficient between predicted and actual values of perceived discomfort was about 0.96. It is expected that the result help to properly estimate the body stress resluting from worker's postures and external loads and can be used as a valuable design guideline on preventing work-related musculoskeletal diseases in industry.

• 수산해양교육연구
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• 제25권5호
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• pp.1110-1122
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• 2013

The purpose of this study was to study on realities and teachers' perception of Integrated-subject essay education in high school. Based upon teachers' perception, literature research and interview on integrated-subject essay education, measures to promote integrated-subject essay education in high school as follows. First, focused on realities of integrated-subject essay education, it is desirable that integrated-subject essay start from the first grade. Second, focused on objectives of integrated-subject essay education, it is desirable that integrated-subject essay education and assessment be executed to meet students' demand. Third, focused on contents of integrated-subject essay education, if high school teachers participate in essay examination questions and marking exams and essay examination questions is set within range of high school curriculum, it will contribute to normalizing public education. Fourth, focused on methods of integrated-subject essay education, teachers have to reconsider active perceptions to take a specialized essay training and to reduce a heavy workload to teachers, to develop guide book for integrated-subject essay education, to consult integrated-subject essay class, to develop specialized essay training program liking universities, to construct a specialized classroom for team teaching and debate class, to reduce students per class etc. are required. Fifth, focused on effects of integrated-subject essay education, it is desirable that integrated-subject essay education be executed for all students and in all subjects.

• International Journal of Computer Science & Network Security
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• 제21권7호
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• pp.341-349
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• 2021

Many emerging mobile ad-hoc network application communications are group-oriented. Multicast supports group-oriented applications efficiently, particularly in a mobile environment that has a limited bandwidth and limited power. Energy effectiveness along with safety are 2 key problem in MANET design. Within this paper, MANET is presented with a stable, energy-efficient clustering technique. In this proposed work advanced clustering in the networks with ticket ID cluster manager (TID-CMGR) has formed in MANET. The proposed routing scheme makes secure networking the shortest route possible. In this article, we propose a Cluster manager approach based on TICKET-ID to address energy consumption issues and reduce CH workload. TID-CMGR includes two mechanism including ticket ID controller, ticketing pool, route planning and other components. The CA (cluster agent) shall control and supervise the functions of nodes and inform to TID-CMGR. The CH conducts and transfers packets to the network nodes. As the CH energy level is depleted, CA elects the corresponding node with elevated energy values, and all new and old operations are simultaneously stored by CA at this time. A simulation trial for 20 to 100 nodes was performed to show the proposed scheme performance. The suggested approach is used to do experimental work using the NS- simulator. TIDCMGR is compared with TID BRM and PSO to calculate the utility of the work proposed. The assessment shows that the proposed TICKET-ID scheme achieves 90 percent more than other current systems.

• Journal of Chest Surgery
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• 제32권2호
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• pp.124-129
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• 1999

배경: 심실 중격 결손으로 인한 좌우 단락은 폐정맥 환류의 증가로 인한 좌심방 및 좌심실의 비대를 유발할 뿐만 아니라, 폐동맥압이나 폐혈관 저항을 증가 시키므로 우심실의 후부하에 간접적인 영향을 미친다. 따라서 폐동맥 고혈압을 추정하는 하나의 지표로 사용되고 있는 우심실 수축기 시간 간격의 변화를 추적하여 우심실 부하의 변화 정도를 확인하고, 이를 심실 중격 결손 환아의 술 후 관리 지침에 반영하고자 본 연구를 시도하였다. 대상 및 방법: 1995년 1월부터 1996년 12월까지 영남대학교 의과대학 부속병원에서 다른 심기형이나 증후군을 동반하지 않은 단순형 심실중격결손으로 진단받고, 봉합술을 전후하여 어떠한 전신 질환이나 합병증을 동반하지 않은 12명을 대상으로, M-mode 및Doppler 심초음파도를 이용하여 봉합술 전, 술후 3개월 그리고 술후 6개월에서 1년 사이(평균9.5$\pm$1.8개월)의 심박수, 좌심방/대동맥 내경비(LA/Ao), 우심실 박출 전기(right ventricular pre-ejection period : RVPEP)와 우심실 박출 기간(right ventricular ejection time : RVET)을 구하여 그 비(RVPEP/RVET)의 변화를 알아 보았다. 결과:심박수는 술후 실시한 두 차례의 검사에서 유의한 감소를 보였다(137.1$\pm$13.7 vs 114.4$\pm$21.1 and 104.1$\pm$10.2, p<0.01). 좌심방/대동맥 내경비는 술후 실시한 두 차례의 검사에서 유의한 감소를 보였다(1.71$\pm$0.32 vs 1.47$\pm$0.33 and 1.390.23, p<0.05). RVPEP/RVET는 술후 두 차례의 검사에서 유의한 감소를 보였으며(0.38$\pm$0.09 vs 0.32$\pm$0.08 and 0.29$\pm$0.09, p<0.01) 각각을 심박수로 교정한 RVPEP/RVET는 술후 3개월에는 유의한 감소를 보이지 않았으나 술후 6개월에서 1년 사이에는 유의한 감소를 보였다(0.32$\pm$0.03 vs 0.30$\pm$0.05 and 0.28$\pm$0.06, p<0.05). 결론: 심실중격결손으로 인한 좌우 단락은 폐동맥압의 증가를 유발하여 우심실의 후부하에 영향을 미친다는 사실을 우심실 수축기 시간 간격의 변화를 통하여 간접적으로 확인할 수 있었으며, 우심실의 과부하 상태가 수술적 교정 직후부터 정상으로 회복되기 시작하나, 단순형 심실중격결손이라 할지라도 술후 6개월 이상까지 지속되는 것을 확인할 수 있었다.

• 동의생리병리학회지
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• 제21권1호
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• pp.126-135
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• 2007

This study was conducted to identify the effects of the oriental medicine Qigong Exercise on the brain power, HRV, pulsation, live blood condition among young boys and girls. The study was performed with two group(control group and experimental group) in a pre-test/post-test design. The subjects were 44 young boys and girls selected by a some middle school in Busan. The oriental medicine Qigong Exercise program consists of 80-minute sessions three times a week over 5 months. All of the subjects were examined on the congnition assessment tool, stress assessment tool, oriental medicine pulsation 3-D MAC, live blood condition analyzer Prior and post surveys were measured before and after the experiment. In the cognition assessment, the amplitude of ERS were increased afer Qigong Exercise. The Success and the Concentration were significantly increased afer Qigong Exercise, the Error was significantly decreased afer Qigong Exercise. The Cognition strength was significantly increased, but the Reponse time was not significantly decreased afer Qigong Exercise. And the Workload was not significantly decreased, the Total Score was not significantly increased afer Qigong Exercise. Among the stress assessment, RRV tachogram's ‘mean RR’ was significantly increased, ‘mean HRV’ was significantly decreased afer Qigong Exercise. SDNN was not significantly increased, Complexity was not significantly increased afer Qigong Exercise. And TP(RRV power's total power) was not significantly increased, VLF and HF was significantly increased, and LF was significantly decreased afer Qigong Exercise. ANS's norm LF was not significantly decreased, but norm HF was significantly increased afer Qigong Exercise. In the RRV's Phase Plot, RMSSD and SDSD were not significantly increased, pnn50 was not significantly decreased afer Qigong Exercise. On the whole, Parasympathetic Activity and Stress Endurance were significantly increased, but Cardiac Activity and Physical Arousal were not significantly increased afer Qigong Exercise. Cardiac Aging was not significantly decreased afer Qigong Exercise. Sympathetic Activity, Autonomic Nervous System Balance and Heart-load were not significantly decreased afer Qigong Exercise. In the pulsation, press power was increased(15%), and w/t(pressurization time / pulsation time) was decreased(20%) afer Oigong Exercise. And the live blood condition was not changed afer Qigong Exercise. As mentioned above; the oriental medicine Qigong Exercise program was identified the effects of the inspiration of the brain power, heart rate and anti-stress.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제34권3호
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• pp.215-234
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• 2020

AI 시대의 함께 교육에서도 AI 활용의 필요성이 제기된다. 본 연구의 목적은 예비수학교사가 인식하는 미래 수학교육에서 AI의 필요성과 AI 활용에서 교사의 역할을 조명하는 것이다. 연구 결과, 교수 측면에서 예비교사들은 학교 수학에 AI 활용이 시대적 요구이며, 다양한 유형의 수업 구현과 정확한 지식 및 정보를 전달할 수 있지만, 인지적·감정적 상호작용에 한계가 있다고 하였다. 학습 측면에서 AI는 개별화 학습을 제공하고, 학교 수업 외 보충학습에 활용할 수 있고, 학습 흥미를 자극할 수 있지만, 학생들의 주체적 사고 능력을 저해할 수 있다고 하였다. 평가의 측면에서 AI는 객관적이고 공정하며 교사의 업무를 감소할 수 있지만 서·논술형 문항과 과정 중심 평가에서 한계가 있다고 하였다. AI 활용에서 예비교사들이 생각하는 교사의 역할은 수업, 감정적 상호작용, 비정형화된 평가, 상담이었고, AI의 역할은 개별화 학습, 기계적 학습, 정형화된 평가와 행정 업무로 나타났다.

• 대한임상검사과학회지
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• 제51권4호
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• pp.495-503
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• 2019

본 연구는 채혈실의 적정인력에 대한 표준산출모형을 제시하기 위하여 임상병리사의 채혈 업무량 평가에 따른 적정인력 규모를 산정하였다. 연구대상으로 600에서 2,000병상 사이의 11개 대학병원을 선정하였다. 표준산출모형을 위한 채혈 관련 주요 인자를 선정하고 국내현황조사, 인자의 병원 간 분석, 표준채혈시간을 제시하여 채혈 적정인력을 산정하였다. 연구대상으로 600에서 2,000병상 사이의 11개 대학병원을 선정하였다. 소아와 노인을 제외한 20세 이상~60세 미만의 성인 외래채혈환자를 대상으로 측정한 14단계 표준채혈시간은 4분 8초이었다. 하루 8시간 기계적 채혈을 한다고 가정할 경우 1명의 임상병리사가 채혈 할 수 있는 최대건수는 100건으로 분석되었다. 결론적으로 채혈에 종사하는 임상병리사의 1일 적정채혈 환자 건수는 100건 이하로 하는 것이 적정할 것으로 사료된다. 그리고 채혈적정인력은(채혈업무 100% 비중)=연간적정건수/((1일 근로시간/건당 소요시간)×연간 근무일수)이므로 채혈 적정인력(채혈업무 100%비중)=연간적정건수/(100×연간 근무일수)라 할 수 있다.