• 성인간호학회지
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• 제13권2호
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• pp.291-304
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• 2001

The purpose of this study was to develop Intensive Care Unit (ICU) admission and discharge criteria that would lead to the appropriate utilization of ICU resources and nursing services. For this study, a conceptual framework was developed through a review of the literature. Then in order to identify the overall health condition of patients in the ICU, and to draw up preliminary criteria, the medical records of 58 patients who were admitted to the ICU of Y Medical Center in Seoul between March, 1999 to February, 2000 of were analyzed. Two expert validity tests were done for the preliminary criteria for admission and discharge with 21 patients over 18 years of age who were admitted patients and for 12 patients who were discharged between May 30, 2000 and June 5, 2000 a clinical validity test was also done. After this process, the final admission and discharge criteria were developed. The results of this study are summarized as follows: 1. After a review of the literature, there were 9 categories for admission criteria cardiologic, gastrointestinal, neurologic, endocrine, post-op care of major surgery, vital signs, laboratory values, and a category of miscellaneous items. Discharge criteria had 3 categories which were vital signs, laboratory values, and a category of miscellaneous items. 2. From the medical records of the 58 patients who were admitted to the ICU, 45 items for preliminary criteria for admission and 17 for discharge were identified. 3. The two expert validity tests showed that of the 45 items 29 admission items received over 75 percent agreement. The 16 admission items which received less than 75 percent agreement were revised or deleted from the admission criteria. Of the 17 discharge items, 11 had over 75 percent agreement and 6 less then 75 percent agreement. These were revised or deleted from the discharge criteria. 4. In the clinical validity test, 14 admission items showed more than 75 percent agreement and 11 discharge items more than 83 percent agreement. 5. The final criteria consisted of 29 items for admission and 11 items for discharge. Since patients being considered for admission to the ICU have complex problems, there is a need to make the decision based on more than a single issue. This tool will insure that the ICU nursing care and treatment resources are appropriately used by allowing a multi-professional health team to make admission and discharge decisions.

• 자원리싸이클링
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• 제18권2호
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• pp.39-50
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• 2009

포틀랜드 시멘트 제조 시 다량의 $CO_2$ 가스 배출로 많은 문제가 발생하고 있다. 그리고 화력발전소에서 발생하는 산업부산물인 플라이애시를 시멘트와 일부 대체하여 콘크리트에 재활용하고 있으나, 50% 이상을 해안 및 육상에 매립함으로써 환경적인 문제를 유발하고 있다. 최근 결합재로 시멘트를 사용하지 않은 알칼리 활성 콘크리트에 대한 연구가 활발히 진행되고 있다. 이 알칼리 활성 콘크리트는 시멘트 대신에 Si와 Al이 풍부한 플라이애시를 사용하여 알칼리 용액으로 활성화시킨 시멘트 ZERO 콘크리트로서 $CO_2$ 가스를 저감하는데 효과적이다. 본 논문에서는 시멘트를 전혀 사용하지 않고 결합재로서 플라이애시를 100% 사용한 알칼리 활성 콘크리트를 개발할 목적으로 알칼리 활성화제와 양생조건 등이 모르타르의 압축강도에 미치는 영향에 대해 검토하였다. 그 결과, 9M NaOH과 쇼듐실리케이트(Sodium Silicate)를 1:1의 비율로 제조한 알칼리 활성화제를 사용하고, $60^{\circ}C$에서 48시간 동안 앙생을 한 다음 기건양생을 실시할 경우 재령 28일에서 압축강도 70MPa의 알칼리 활성 모르타르를 제조할 수 있는 것으로 나타났다.

• 한국엔터테인먼트산업학회논문지
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• 제15권7호
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• pp.145-158
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• 2021

본 연구는 피부미용샵의 양적 확대와 병행하여 고객의 기대와 요구에 부응하는 질적 수준을 함께 향상시켜야 할 필요성이 절실한 현 시점에서 고객이 어떤 요인에 근거하여 피부미용샵을 선택하고, 어떤 속성을 고려하는지 중요도-만족도 분석을 통해 고객이 요구하는 중요 요인을 도출하고자 하였다. 연구의 대상은 피부미용샵 서비스를 이용해본 경험이 있는 광주·전남지역의 20대 이상인 217명을 대상으로 실시하였고, 수집된 자료의 통계처리는 SPSS v. 21.0 통계 패키지 프로그램을 활용하여 분석하였으며 주요 결과는 다음과 같다. 피부미용샵 선택 요인에 대한 중요도-만족도 차이를 토대로 피부미용샵 선택 요인의 항목별로 각 하위요인에 대한 중요도가 어느 정도이고, 이에 부응한 만족도는 어느 정도 되는지 그 현상을 파악하고자 IPA 격자도 분석을 실시한 결과는 유지강화의 1사분면에 해당하는 항목은 '도구 및 제품의 위생관리'로 분석되었으며, 지속유지의 2사분면에 해당하는 항목은 '기본현황(법적 준수사항)'으로 분석되었고, 점진개선의 3사분면에 해당하는 항목은 '종사자의 위생관리'와 '피부미용샵 내부 위생관리', '종사자의 전문성과 기술)', '서비스의 질'로 분석되었다. 본 연구의 결과를 활용함으로써 피부미용샵의 효율적 운영에 근거를 삼고자 하며 더 나아가서는 피부미용 산업의 양적·질적 저변 확대를 기대해본다.

• 대한지역사회영양학회지
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• 제17권3호
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• pp.341-352
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• 2012

It is well established that excessive sodium intake is related to a higher incidence of chronic diseases such as hypertension, stroke, coronary heart disease, cardiovascular disease and gastric cancer. Although the upper limit of the current sodium intake guideline by WHO is set at 2,000 mg/day for adults, sodium intake of Koreans is well over 4,700 mg/capita/day implying an urgent need to develop and implement sodium intake reduction policy at the national level. This study investigated the cost-effectiveness of the sodium intake reduction policy, for the first time, in Korea. Analyses were performed using most recent and representative data on national health insurance statistics, healthcare utilization, employment information, disease morbidity/mortality, etc. The socioeconomic benefits of the policy, resulting from reduced morbidity of those relevant diseases, included lower medical expenditures, transportation costs, caregiver cost for inpatients and income losses. The socioeconomic benefits from diminished mortality included reductions in earning losses and welfare losses caused by early deaths. It is estimated that the amount of total benefits of reducing sodium intake from 4.7 g to 3.0 g is 12.6 trillion Korean Won; and the size of its cost is 149 billion Won. Assuming that the effect of sodium intake reduction would become gradually evident over a 5-year period, the implied rate of average return to the sodium reduction policy is 7,790% for the following 25 years, suggesting a very high cost-effectiveness. Accordingly, development and implementation of a mid-to-long term plan for a consistent sodium intake reduction policy is extremely beneficial and well warranted.

• 산경연구논집
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• 제10권1호
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• pp.59-67
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• 2019

Purpose - The Millennial Generation, which grew in the wake of the spread of the Internet and rapid changes in the media environment, is rapidly moving from the traditional broadcasting environment to the Internet-broadcasting environment in terms of content acceptance. With the emergence of UGC (User-generated content), the change in the status of single-person content creators enables the growth of multi-channel networks (MCN), a new content-distribution platform and an agency concept for single creators. Youtube-based MCN produces multiple single star producers and casts and provides its own video series through Youtube. It is also emerging as a major M&A target for global media providers in terms of providing content to a wide range of consumers with the same interests and consumption characteristics. In addition, for the Millennials generation, which are part of their lives, MCN is becoming the most suitable media for TGIF (Twitter, Google, i-phone, Facebook). Accordingly, this study defines newly emerging MCNs and analyzes the factors for accepting MCN-produced content based on the push-pull-mooring (PPM) model. Research design, data, and methodology - An empirical analysis is performed through a questionnaire survey. For this purpose, 204 people who have experience of watching MCN were studied. Collected data is processed through analysis of a structural equation model using R to test the hypothesis. Results - For the MCN service to become an alternative to existing media, it is necessary to continuously promote cultural diversity and diversity of attempts that conventional media cannot provide. It is the attractiveness of the alternative that has the greatest influence on the intention to switch to a MCN service. When we look at MCN content so far, certain patterns such as game progress, introduction, food, and chat rooms have already appeared. We need to overcome this and develop a completely new conceptual content that we have never seen before. This requires a more generous viewer perception of the topics covered. For diversity, linguistic and verbal violence should be tolerant in common sense to provide a foundation for securing cultural diversity. Conclusions - In this study, we tried to develop a comprehensive approach to the substitution effect of MCN. In terms of academic achievement, the PPM model is used to enhance the utilization of media and broadcasting. Practical implications are to provide an analytical framework for verifying alternative or complementary effects when viewers switch to MCN.

• Korean Chemical Engineering Research
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• 제50권3호
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• pp.391-397
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• 2012

기존 경질 원유 자원의 매장량 고갈과 중국, 인도 등 개발도상국에서의 에너지 수요가 급증하면서 원유 자원의 공급이 수요를 감당하지 못하는 상황이 벌어지고 있고, 따라서 상대적으로 활용도가 낮았던 중질유를 효율적으로 이용하는 방안이 대두되고 있다. 중질유를 활용하기 위해서는 경질화 과정을 거쳐야하는데, 특히 공정이 단순하고 경제적인 열분해 기술이 적합하다고 할 수 있겠다. 본 연구에서는 중질유의 열분해 특성 분석의 기초 자료를 얻기 위해 중질유에서 아스팔텐이 제거된 deasphalted oil(DAO)의 열분해 실험을 수행하였다. DAO는 solvent deasphalting 공정을 통하여 얻어지며 주로 탄소수가 20~40인 물질들로 이루어져 있는데, DAO의 열분해 반응 속도론적 분석 결과와 비교 분석하기 위해 DAO의 평균 탄소수를 갖는 탄소수 30의 단일 물질들($C_{30}H_{62}$, $C_{30}H_{58}O_4S$, $C_{30}H_{63}O_3P$)을 선택하여 추가적인 열분해 실험을 수행하였다. 열분해 실험에서는 열중량 분석기를 이용하여 비등온 열분해 방법(10, 50, $100^{\circ}C$/min)으로 실험을 진행하였고, 열분해 반응을 분석하는 방법으로는 가장 기초적인 Arrhenius 방법을 비롯하여 Ingraham and Marrier 방법, Coats and Redfern 방법, Ozawa-Flynn-Wall 방법을 이용하였다. Arrhenius, Ingraham and Marrier, Coats and Redfern 방법으로 계산된 DAO의 열분해 반응 평균 활성화에너지 값은 72~99 kJ/mol이었다. 그리고 Ozawa-Flynn-Wall 방법으로 분석된 활성화에너지에서는 전환율의 증가에 따라 DAO의 경우 그 상승 폭이 단일 물질들에 비해 크게 나타났다.

• 한국건설관리학회논문집
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• 제21권3호
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• pp.28-38
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• 2020

최근 건설구조물의 대형화, 고층화로 인해 고소작업이 증가하며 떨어짐 사고(이하 사고)가 증가하고 있다. 근로자의 불안전한 행동이 산업재해의 주요 원인으로 밝혀지며, 불안전한 행동 예측 및 관리의 필요성이 제기되었다. 이 연구는 건설 현장에서 근로자의 불안전한 행동과 사고의 관계를 확률로 제시하여 불안전한 행동의 개선 효과를 산출하는 것을 목적으로 수행되었다. 재해사례를 분석하여 근로자의 불안전한 행동을 도출하고, 설문조사를 통하여 불안전한 행동으로 인한 사고의 발생 확률(이하 사고 확률)을 산출하였다. 사건수 분석 기법(Event Tree Analysis; ETA)을 활용하여 불안전한 행동의 조합에 따른 최종 사고 확률과 개선 효과를 확인하였다. 불안전한 행동별 사고 확률은 음주 후 작업 수행(95.41%)이 가장 높았고, 장비 및 기계 활용(65.70%)이 가장 낮았다. 불안전한 행동의 조합에 따른 사고 확률은 불안전한 행동을 모두 수행한 경우(13.23%)가 가장 높았고, 불안전한 행동을 수행하지 않은 경우(0.00%)가 가장 낮았다.

• Reproductive and Developmental Biology
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• 제37권4호
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• pp.263-267
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• 2013

Pig producers have been shown keen interest of the number of spermatozoa in a semen dose since pig artificial insemination introduce. However, determining the minimal number of spermatozoa need per AI without detrimental effect on overall reproductive performances is not an easy question to answer. To increase the efficiency of semen utilization in pig AI, optimum number of spermatozoa per dose needed to determine. The objective of this study was to determine the reproductive performance and factors that affect on-farm application of low-dose semen insemination in sows. Data were collected from Darby Genetics AI studs from 4th of June to 7th of July, 2012 (n=401). The numbers of parturition were 84, 234 and 83 in sows inseminated with doses of $1.5{\times}10^9$, $2.0{\times}10^9$ and $2.5{\times}10^9$ spermatozoa in 100ml extender, respectively. There were no significant differences on reproductive performances such as gestation period, total born, total born alive, stillbirth and mummy in sows inseminated with different semen doses. The average number of born alive was 10.5, 11.0 and 10.4 from sows inseminated with $1.5{\times}10^9$, $2.0{\times}10^9$ and $2.5{\times}10^9$ sperms, respectively. Also, number of spermatozoa per dose did not affect litter size (p>0.10). There were no significant differences of maternal genetic line difference on gestation period, total number born, number born alive, born dead and mummy. The estimated correlation coefficients of the different semen doses with total number born, number born alive, born dead and mummy were r=-0.00, -0.01, 0.02 and 0.02, respectively. Taken together, the result of this study suggested that when semen was appropriately inseminated after induced ovulation, insemination with low-dose ($1.5{\sim}2.0{\times}10^9$) semen dose not adversely affect sow's fertility.

• 한국식품영양학회지
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• 제30권5호
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• pp.973-982
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• 2017

Gastrodia elata Blume often has been used for the treatment of headaches, convulsions, hypertension, and neurodegenerative diseases. The main active constituents are gastrodin, 4-hydroxybenzyl alcohol, vanillyl alcohol, 4-hydroxybenzylaldehyde and parishin A, B, C and E. Because Gastrodia elata has also unacceptable off-odor (swine barnyard-like) for food, there is a need to reduce it as well as allow for greater utilization as a functional food materials. In this study, a major off-odor producing substance of Gastrodia elata was fractionated by steam distillation and silica gel column chromatography. The substance was identified as p-cresol(4-methyl phenol) by GC-MS analysis and comparison of the retention time with that of an authentic compound in GC. The content of p-cresol in fermented Gastrodia elata was decreased. A fermented sample of Latobacillus sakei for 2 days was reduced to 54.7%, when compared with a unfermented sample. The five parishin derivatives in Gastrodia elata were identified by HPLC-MS analyses, and a comparison of HPLC retention times with those of authentic compounds. When compared with parishin derivatives of an unfermented Gastrodia elata, those of Gastrodia elata fermented by L. sakei, increased to 18.3% for 2 days. Increases of about 14.0~38.4% of the total phenolic compounds and 57.4~77.3% total flavonoids were found in fermented extracts, by 3 lactic acid bacteria strains. They were compared with $97.1{\pm}2.9{\mu}g/g$ and $40.9{\pm}2.0{\mu}g/g$ in the unfermented control, respectively. The extracts of Gastrodia elata Blume that were fermented by lactic acid bacteria had higher DPPH free radical scavenging activity and FRAP reducing power than the unfermented control.

• 융합정보논문지
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• 제9권12호
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• pp.302-312
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• 2019

본 연구는 미용사(메이크업) 국가기술자격증 응시 경험자 및 취득자 220명을 대상으로 자격증 취득을 위한 교육인식 하위요인(필요성, 효용성, 가치, 비용, 적절성)이 현장활용성 및 만족도에 미치는 영향과 각 요인간의 상관관계를 분석하였다. 메이크업자격증 실기 과정 중 활용도 높은 종목은 뷰티메이크업으로 선택하였다. 자격증 교육인식에서 필요성이 높게 나타났고 비용, 연간 시험 횟수에 대한 인식이 낮게 나타나 개선이 필요한 것을 알 수 있었다. 현장활용성에서 뷰티메이크업 활용을 높게 인식하였고 자격증 취득에 대해서 높게 만족하였으며 급여에 대해서는 낮게 인식되었다. 국가기술자격증 교육인식 하위요인 중 필요성, 비용, 적절성이 현장활용성과 만족도에 유의한 정(+)의 영향을 미쳤고 그 중 적절성이 현장활용성에, 비용이 만족도에 가장 큰 영향을 미치는 것으로 나타났다. 따라서 메이크업 자격증 분야의 세분화 및 전문화와 취득을 위한 비용 절감 및 활용성이 높은 이론 및 테크닉 개선을 위한 노력이 필요하다.