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박정하(Jung Ha Park) 한국관광연구학회 2012 관광연구저널 Vol.26 No.2
The purpose of this study visit theme park visitor`s motivations to investigate the differences in satisfaction by who had visited Expo Science Park in Daejeon from October 1st to October 15th of 2011 for empirical analysis to clarify the difference in visitors` satisfaction based on their motivation to visit the park. The research was executed by self-answering subjective method and 265 copies, out of 300 copies deployed then 287 collected from which inappropriate ones were removed, were used to run factor analysis for the motivation to visit and satisfaction and the dimensions of motivation and satisfaction were computed by SPSS Win Ver, 17.0 statistical package. In order to run a cluster analysis and to verify the validity of clustering discriminant analysis was performed and to validate the hypothesis multivariate analysis of variance (MANOVA) was performed. To summarize the results of the analysis, it was found that there is the difference in satisfaction factors by the type of motivation to visit. Based on these results, a useful implication was suggested.
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3차원 가속도를 고려한 도로곡선부 유형별 설계기준 제시
박정하,박제진,박태훈,하태준,Park, Jung-Ha,Park, Je-Jin,Park, Tae-Hoon,Ha, Tae-Jun 한국도로학회 2008 한국도로학회논문집 Vol.10 No.4
현행 도로설계의 기준이 되는 "도로의 구조 시설 기준에 관한 규칙 해설 및 지침"에서는 설계속도에 따라 도로 선형별 최소 설계기준을 정하고 있으며, 이 기준을 만족시키면 교통안전성 이 확보되는 것으로 규정하고 있다. 이러한 설계기준에 적용되고 있는 개별 설계요소들은 원칙적으로 차량 및 운전자 특성을 감안하여 설치기준이 정립되었으나, 설계요소간의 연관성 또는 일관성에 대한 깊이 있는 연구를 통해 제반 기준이 정립된 것은 아니다. 결과적으로, 현재의 도로설계기준이 개별 설계 요소들의 조합에 의해 결정되는 도로의 안전성, 일관성 문제를 모두 고려하지는 못하였다. 따라서, 본 연구에서는 기존의 설계기준에 내재된 문제점을 인지하고 해결을 위해 우선적으로 3차원 가속도를 고려한 선형 설계방안에 대한 연구를 수행하였으며, 이를 통해 더욱 안전하고 조화로운 도로건설을 유도하고자 한다. According to "A guide Book to Highway Design", most road elements are chosen based on a certain design speed in order to ensure obtaining safe and smooth traffic operating. However, road safety in practical way is corelative to not only all element of roads but also road shape, for example, between straight line and curves line and between curved lines. Also, it is relates to alignments such as horizontal alignment, vertical alignment, and cross section. That is, the practical road design should be examined in both sides of 3 dimension and consecutiveness as the practical road is a 3-dimensional successive object. The paper presents a concept for acceleration to evaluate consistency of road considering actual road shape on 3-dimension. Acceleration of vehicle is influential to road consistency based on running state of vehicle and state of drivers. Especially, the magnitude of acceleration is a quite influential element to drivers. Based on above, the acceleration on each point 3-D road can be calculated and then displacement can be done. Computation of acceleration means total calculation on each axis.
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Cycloinulooligosaccharide fructanotransferase의 결손변이효소에 의한 cyclofructan의 고효율 생산
박정하,권현주,김병우,Park Jung-Ha,Kwon Hyun-Ju,Kim Byung-Woo 한국생명과학회 2006 생명과학회지 Vol.16 No.1
본 연구는 Penibacillus polymyxa 균주의 CFTase 유전자를 결손 변이시킨 고효율 효소 CFT108을 이용하여 cyclofructan (CF)의 대량생산 조건을 검토하고 생산된 CF의 순수 분리 정제 공정을 개발하였다. CF의 대량생산 조건은 $2\%$의 inulin 기질과 40 unit/g inulin의 기질에서 3시간 반응시켰을 때 최대 생산량 9.5 g/l의 수율을 달성할 수 있었으며, 이때의 in-ulin의 CF 전환율은 $47.5\%$였다. 생산된 CF를 순수 분리 정제하기 위해서 CFTase 반응액 을 exoinulinase 1 unit/ml로 6시간 처리하여 미 반응 inulin을 단당화시켰으며, 유리된 fructose는 $3\%$ CaO로 $CO_2$가스 하에서 $80^{\circ}C$, 10분간 3회 흡착제거 시킴으로써 순수 정제하였다. 정제된 CF를 HPLC로 확인한 결과 정제도는 $95\%$ 이상이였으며, $CF_6,\;CF_7,\;CF_8$ 비율이 72 : 27 : 1 이였다. This study investigated the optimal conditions of high yield production of cyclofructan (CF) using recombinant deletion mutant enzyme CFT108 which is constructed by N-terminal deletion from cycloinulooligosaccharide fructanotransferase (CFTase) gene of Penibacillus polymyxa. The production yield was dependent on reaction time, substrate concentration and enzyme concentration. The optimum reaction time for industrial purpose was achieved at 3 hr reaction. The optimal concentrations of substrate and enzyme were found to be $2\%$ inulin and 40 unit/ g inulin, respectively. At optimum condition, 9.5 g/l of maximum yield and $47.5\%$ of conversion efficacy were achieved. For purification of CF produced, the reaction mixture was treated with 1 unit/ml exoinulinase and then added $3\%$ CaO three times with blowing $CO_2$ gas, resulted in $95\%$ purity.
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간호대학생의 자기주도적 학습능력과 고위험약물 지식의 관계
박정하(Jung-Ha Park) 학습자중심교과교육학회 2017 학습자중심교과교육연구 Vol.17 No.23
본 연구의 목적은 간호대학생의 자기주도적 학습능력과 고위험약물 지식의 관계를 조사하기 위함이다. 대상자는 부산과 울산의 4개 대학에서 132명의 간호대학생이다. 조사연구가 실시되었고, 자료는 2013년 8월 28일부터 9월 2일까지 수집되었다. 자료는 SPSS 18.0. 프로그램을 사용하여 기술통계, x²-test, ANOVA, Pearson correlation으로 분석되었다. 대상자의 자기주도적 학습능력은 대부분 중간 수준이었다. 자기주도적 학습능력에 따른 고위험약물 지식에는 유의한 차이가 있었다(F=3.79, p=.025). 학습계획과 학습실행은 고위험약물 지식과 양의 상관관계가 있었다(r=.20,p=.022; r=.20, p=.022). 그러나, 학습평가와 고위험약물 지식은 유의한 상관이 없었다 (r=.13, p=.126). 본 연구를 기반으로 간호대학생의 자기주도적 학습능력과 고위험약물지식을 향상 시킬 수 있는 효과적인 교육전략이 수립될 필요가 있겠다. The purpose of this study was to investigate the relation between self-directed learning ability and knowledge of high alert medications in nursing students. Participants were 132 nursing students at four universities in Pusan and Yansan. A descriptive survey was conducted and data were obtained from August 28 to September 2 in 2013. Data were analyzed using descriptive statistics, x²-test, ANOVA, and Pearson correlation with the SPSS 18.0. Self-directed learning ability of the most subjects was middle level. According to the self-directed learning ability, knowledge of high alert medications was significant difference(F=3.79, p=.025). Learning plan and learning practice were positively correlated to knowledge of high alert medications(r=.20, p=.022; r=.20, p=.022). However, there was no significant correlation between learning evaluation and knowledge of high alert medications(r=.13, p=.126). The results suggest that effective education strategies for improving self-directed learning ability and knowledge of high alert medications in nursing students should be implemented.
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호텔부문 : 컨조인트 분석을 이용한 호텔 연회상품의 선호도에 관한 연구
박정하 ( Jung Ha Park ) 한국호텔리조트카지노산학학회 2006 호텔리조트연구 Vol.5 No.1
This study practiced theoretical research on the products selective theory in order to recognize what the ideal product composition about the optimum product of hotel banquet product was and set up 9 simulated product mixture to be analyzed by conjoint analysis. It was calculated partial value and important level on the individual attributes and property level after execution of conjoint analysis used by selected product and the result was made in a conclusion as an optimum product. And also the research practiced conjoint analysis including the market segmentation using procurement character and demographic variance. This study proved that customer satisfaction can be increased and product competitiveness through the banquet products development would be considered to the customer preference customer preference rather than the products developed by hotel itself. As a result of this study, the development of applicable banquet products should be considered to the customer preference in each product.
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온라인 중금속 측정기기(MONI-HM)의 상대정확도 산정방법 연구
박정하 ( Jung-ha Park ),김성옥 ( Sung-ok Kim ),이진필 ( Jin-phil Lee ) 한국환경기술학회 2015 한국환경기술학회지 Vol.16 No.2
본 논문은 「글로벌탑환경기술개발사업」을 수행하여 개발된 온라인 중금속 측정기기(MONI-HM)를 실제 테스트베드에 적용한 후 중금속 측정항목별 배출허용기준 및 실제 배출되는 배출수에서의 농도를 고려하여 저농도 및 고농도에서도 유효성 및 적합성을 보여줄 수 있는 상대정확도 산정방법을 제안하였다. 기존 상대정확도 산정방법은 배출허용기준 값과 기준이 되는 주시험 방법에 의한 측정값의 분포에 따라 적합범위의 폭이 달라지며, 주시험 방법에 의한 측정값이 배출허용기준의 50% 미만일 경우 배출허용기준이 높은 측정항목이 상대적으로 넓은 범위의 적합범위를 갖게 된다. 또한 배출허용기준의 50% 이하에서는 측정항목별로 일정한 적합범위의 폭을 나타내지만 50% 이상일 경우에는 주시험 농도값이 높을수록 적합범위의 폭이 넓어지게 된다. 본 논문에서 제안된 방법은 측정항목별 배출허용기준농도 차이에서 비롯되는 측정항목별 적합범위의 격차를 줄이고자 측정항목별 가중치를 두어 측정항목별 적합범위를 재설정하였다. 측정항목별 배출허용기준농도에 따라 4개의 Part로 구분하였고 각 Part별로 동일한 적합범위를 가지도록 측정항목별 가중치를 설정하였다. Zn, Cu, Cr은 25%, As는 100%, Cr은 125%, Cd는 250%, Hg는 500%의 가중치를 가지며, 측정항목별로 Zn, Cu는 ± 0.05 mg/L, Cr, Pb은 ± 0.025 mg/L, As, Cd은 ± 0.01 mg/L, Hg는 ± 0.001 mg/L의 적합범위를 가진다. 배출허용기준농도가 상대적으로 높은 Zn, Cu, Cr은 기존의 적합범위에 비해 상대적으로 적합범위가 좁혀졌고 배출허용기준농도가 상대적으로 낮은 Cd, Hg은 상대적으로 적합범위가 넓어졌다. 또한 고농도로 갈수록 적합범위가 넓어지는 현상을 해결하여 저농도 및 고농도 모두 동일한 적합범위를 갖는다. We have developed MONI-HM for the "Global Top Environment Technology Development". Considering the concentration of heavy mentals measured in itemized emission standards and wastewater discharged, we use MONI-HM in the test bed in low and high concentrations to demonstrate the effectiveness and suitability in the relative accuracy of the proposed calculation method. Existing method of it changes the range of suitable standards by distribution of data derived from the main analysis method and water quality standards(blue belt). If data derived from the main analysis method is 50% or less of water quality standards(blue belt), analysis items having high water quality standards have suitable standards of a relatively wide range. Also, Under 50% of water quality standards(blue belt) has a constant range of suitable standards of analysis items. However, above 50% of it has the higher data derived from the main analysis method, the wider a range of suitable standards. The application technology of this research is to reset a suitable range of analysis items by giving its a weighted value in order to reduce a gap of suitable ranges of analysis items due to concentration differences of water quality standards of analysis items. It was to divide up 4 parts into water quality standards of analysis items and it was set up its a weighted value, respectively. Analysis items have a weighted value such as Zn 25%, Cu 25%, Cr 25%, As 100%, Cr 125%, Cd 250%, and Hg 500%. Also, analysis items have a suitable range such as Zn ± 0.05 mg/L, Cu ± 0.05 mg/L, Cr± 0.025 mg/L, Pb ± 0.025 mg/L, As ± 0.01 mg/L, Cd ± 0.01 mg/L and Hg ± 0.001 mg/L. Water quality standards of analysis items such as Cu, Zn and Cr became narrow a gap of suitable ranges compared to the existing it. And water quality standards of analysis items such as Cd and Hg became wide a gap of suitable ranges compared to the existing it. Also, as concentration increases, the gap for suitable ranges widen. As this problem solves, it has become a same range of suitable standards regardless of high and/or low concentrations.
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