• Current Optics and Photonics
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• 제4권1호
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• pp.1-8
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• 2020

We research a system of compressed-sensing computational ghost imaging (CSCGI) based on the intensity fluctuation brought by turbulence. In this system, we used the gamma-gamma intensity-fluctuation model, which is commonly used in transmission systems, to simulate the CSCGI system. By setting proper values of the parameters such as transmission distance, refractive-index structure parameter, and sampling rates, the peak signal-to-noise ratio (PSNR) performance and bit-error rate (BER) performance are obtained to evaluate the imaging quality, which provides a theoretical model to further research the ghost-imaging algorithm.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2011년도 제40회 동계학술대회 초록집
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• pp.72-72
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• 2011

Recently, Zinc oxide (ZnO) nano-structures have been received attractive attention because of their outstanding optical and electrical properties. It might be a promising material considered for applications to photonic and electronic devices such as ultraviolet light emitting diode, thin film transistor, and gas sensors. ZnO nano-structures can be typically synthesized by the VLS growth mode and self-assembly. In the VLS growth mode using various growth techniques, the noble metal catalysts such as Au and Sn were used. However, the growth of ZnO nano-structures on nano-crystalline Au seeds using radio frequency (RF) magnetron sputtering might be explained by the profile coating, i.e. the ZnO nano-structures were a morphological replica of Au seeds. Ga doped ZnO (ZnO:Ga) nano-structures using this concept were synthesized and characterized by XRD, AFM, SEM, and TEM. We found that surface morphology is drastically changed from initial islands to later sun-flower typed nano-structures. We will present the structural evolution of ZnO:Ga nano-structures with increasing the film thickness.

• Journal of Ginseng Research
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• 제41권3호
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• pp.373-378
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• 2017

Ocotillol-type saponins are one kind of tetracyclic triterpenoids, sharing a tetrahydrofuran ring. Natural ocotillol-type saponins have been discovered in Panax quinquefolius L., Panax japonicus, Hana mina, and Vietnamese ginseng. In recent years, the semisynthesis of 20(S/R)-ocotillol-type saponins has been reported. The biological activities of ocotillol-type saponins include neuroprotective effect, antimyocardial ischemia, antiinflammatory, antibacterial, and antitumor activities. Owing to their chemical structure, pharmacological actions, and the stereoselective activity on antimyocardial ischemia, ocotillol-type saponins are subjected to extensive consideration. In this review, we sum up the discovery, semisynthesis, biological activities, and metabolism of ocotillol-type saponins.

• 품질경영학회지
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• 제39권1호
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• pp.155-166
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• 2011

In this research, we study on to find the inter-relation among education service quality and customer satisfaction and re-use focusing on E life-long education center. Education service quality consists of four factors such as training center's facility, trainer, employee's service and operating service. As like the results of this research, we found that three factors of education service quality such as facility, trainer and operating service give a positive effect to customer satisfaction and also we found that customer satisfaction gives a positive effect to re-use.

• 한국운동역학회지
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• 제21권5호
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• pp.645-652
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• 2011

The purpose of this study was to analyze, in real time, the glide motion and release motion of domestic athletes and gold and bronze medalists employing the glide technique for the men's shot put at the Daegu World Athletic Championship in 2011. In the glide motion, the Korean athletes had a relatively high body center and shot put heights and lager stretching angles for their hips and knees. In the delivery phase, which shifts to the release phase, the Korean athletes showed slower vertical body center and shot put speeds, and they changed the phase, to the release phase by using a small body angle. In the release phase, the Korean athletes showed differences in their projection speeds and vertical body center speeds. The world-famous players showed high angle speeds, which refer to the composition of the rotation force at the moment of release (body, hip, and shoulder line). In the release phase, the Korean athletes did not have fully stretched hip and knee angles, which might have negatively influenced the vertical speed. Because the Korean athletes showed relatively low projection heights and projection angles. it was found that they need to enhance the muscular power of their, throwing arms and lower limbs.

• 대한통합의학회지
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• 제12권2호
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• pp.167-176
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• 2024

Purpose: This study aimed to verify the effectiveness of suicide prevention education using the "Life Charger" program for older adults. Methods: This study conducted the "Life Charger"suicide prevention education with 95 older adults in the experimental group. Participants were recruited from a senior welfare center and a senior citizen center in D metropolitan city, and their attitudes toward suicide and sense of competence in providing help before and after the education were investigated. While no measures were taken for the control group, their attitudes toward suicide and help-giving competence were surveyed during the same period. Statistics were analyzed using SPSS 23.0, demographic variables of the experimental and control groups were calculated as percentiles, and Chi-square analysis and paired-sample t-test were performed to verify the homogeneity of the experimental and control groups. Results: To verify the effectiveness of the "Life Charger"suicide prevention education, the effectiveness of attitude toward suicide before and after the education was verified. The experimental group showed a significantly higher level (t=-6.34, p<.000). Their competence in providing help was also at a significantly higher level (t=-10.20, p<.000). Upon verifying the effectiveness of the program, the experimental group's attitude toward suicide was found to be significantly higher; however, the control group showed no change in attitude toward suicide and competence in providing help. Conclusion: This study verified that the "Life Charger"suicide prevention education for older adults was effective in increasing attitudes toward suicide and sense of competence in providing help. To increase the effectiveness of suicide prevention education for older adults, follow-up research should determine whether there are any actual changes after the training, and attitudes toward suicide and help-providing competence should be increase d through universal and repetitive education to prevent suicide among older adults.

• 지역사회간호학회지
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• 제27권2호
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• pp.183-192
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• 2016

Purpose: The purpose of this study was to seek the direction of community health nursing practice education focus on the nursing education accreditation criteria. Methods: We collected data through e-mail survey to all of 202 Korean nursing baccalaureate education institute in April, 2016. The 93 professors teaching community health nursing was responded about their affiliated institute (response rate 46.0%). Results: The Korean nursing graduates in Feb. 2016 was practiced 3.01 credits, 131.6 hours in community health nursing course. Community health nursing practice agency was public health center (98.9%), Public health center post (43.0%), Public health center branch (32.3%) in order. The possibility to achieve the course objectives up to national examination was recognised Public health center (3.4), Public health center post (3.3), Public health center branch and school (3.2) from 5 score likert scale. A lot of nursing education institute have difficulty in clinical placement in community health nursing practice agency that meet eligibility of preceptor and space gaining for only nursing students. Conclusion: The nursing education accreditation criteria in 3rd cycle have to be considered real community health nursing practice situation and newly emerging community health nursing fields.

• 한국식품영양학회지
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• 제23권3호
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• pp.342-351
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• 2010

This study was conducted to investigate the dietary behavior of day-care center teachers and their meal attitudes during meal time in Jeonju area. Self administered questionnaires were collected from 266 day-care center teachers who worked in a national(public) or private day-care center. The Statistical data analysis was conducted using SPSS v. 12.0. All subjects were women, and 64.7% were married(p<0.001), over more than 60% were junior college graduates(p<0.05), and 73.7% had salaries greater than 1,000,000 won(p<0.001). The breakfast skipping ratio of the subjects was very high, and about 66.5% of the respondents had irregular meals. The snack intake ratios of the subjects in private day-care centers were higher than the subjects in national(public) day-care centers(p<0.001). Approximately 56% of the subjects responded that education about eating is very important for providing balanced nutrition to young children. About 84% of subjects had no experience with the continuing-education program for teachers(p<0.01), and they wanted to know more about balanced nutrition. The meal attitude education score during meal time was $4.53{\pm}0.36$. The relationship between meal attitude education and the dietary behavior of day-care teachers was significantly different based on the "frequency of overeating"(p<0.05) and "self-recognition of eating habit"(p<0.05). These findings suggest that a nutrition education program for day-care center teachers should be developed so that they can effectively manage meal attitude education for young children and provide good nutrition for themselves.

• 임상간호연구
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• 제26권3호
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• pp.285-295
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• 2020

Purpose: The purpose of this study was to develop and validate a education nurse specialist-led educational satisfaction scale for nurses working at comprehensive nursing care service wards. Methods: A methodological study was conducted. A total of 237 nurses working at comprehensive nursing care service wards in a general hospital participated in this study. The scale was developed through literature reviews, in-depth interview, development of preliminary items, verification of content validity, development of secondary items, evaluation of construct validity, and extraction of final items. Analysis included exploratory factor analysis, pearson's analysis, and reliability analysis using cronbach's α. Results: The education nurse specialist-led educational satisfaction scale for nurses working at comprehensive nursing care service ward consisted of 21 items. Two factors (critical thinking disposition and clinical competency) were identified which explained 63.5% of the total variance. Cronbach's α of each factors were >.95. Conclusion: The results suggested that the education nurse specialist-led educational satisfaction scale for nurses working at comprehensive nursing care service wards demonstrated acceptable validity and reliability. Items of the instrument can assess the level of satisfaction with regards to education led by education nurse specialist among nurses working at comprehensive nursing care service wards.

• 한국문헌정보학회지
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• 제32권2호
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• pp.277-294
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• 1998

본 논문에서는 우리나라 학교교육의 문제점과 학교도서관의 문제점을 살펴 본후 학교교육을 정상화시키기 위한 방안으로 학교도서관의 발전을 주장하였다. 현대 사회에서 요구되어지는 창의성 개발교육, 평생교육, 열린교육 등에 있어서 우리나라 교육현장의 문제점을 살펴보았으며 학교도서관이 이러한 학교교육의 요구에 어떻게 적합한가를 논하였다. 또한 이상적인 학교도서관의 역할과 관련하여 우리나라 학교도서관 현장의 문제점을 살펴보았으며 특히 사서교사의 심각한 부족현상을 가장 중요한 요인으로 지적하고 앞으로의 개선 방안을 제시하였다.