• 한국수자원학회논문집
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• 제30권1호
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• pp.83-93
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• 1997

본 연구는 강우로 인한 도시 배수구역에서의 유출 및 수질 산정을 위한 주요인자들이 모의해석 결과치에 주는 영향을 분석하였다. 적용대상유역으로서 남가좌, 산본 배수구역과 미국의 Gray Haven, Kings Creek 배수구역 등의 4개 지역을 선택하였다. 실측치를 토대로 각 영향인자들의 최적치를 주요 유역영향인자들을 포괄적으로 수용하고 있는 SWMM모형으로 산정하고, 이를 기준값으로 하여 이들이 계산 결과치에 주는 민감도를 분석하였다. 유출영향 인자로서 불투수면적은 첨두유출량 및 유출용적에 가장 큰 영향을 줌을 알 수 있었다. 한편 지표면 저류 깊이는 완만한 경사의 유역에서 첨두유량 및 유출용적에 상당한 영향을 주었다. 한편, 오염농도 및 오탁부하량에 영향을 주는 주요매개변수로서는 단위면적, 오염축적의 정도를 나타내는 오염축적계수와 오염축적을 지속적으로 가능하게 하는 연속 무강우 일수 등이 큰 민감도를 보여주었다. 이는 비점원 오염물의 절대 축적량이 하천수질에 직접적인 영향을 주고 있음을 의미한다. 한편 강우초기의 수질에 영향을 주는 변수로서는 강우강도와 오염물질의 이송능력을 나타내는 이송계수 및 지수들의 영향이 상당하였다. 따라서 도시유역에서의 유출 및 수질 모의를 위하여서는 충분한 유역자료의 수집과 분석이 선행되어야 하며, 특히 불투수지역의 정확한 불리와 유역별 비점원 오염물의 축적량의 합리적 산정 과정에 많은 노력을 기울여야 할 것이다.

• 대기
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• 제24권3호
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• pp.445-456
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• 2014

A real-time quality control system for meteorological data (air temperature, air pressure, relative humidity, wind speed, wind direction, and precipitation) measured by an integrated meteorological sensor has been developed based on comparison of quality control procedures for meteorological data that were developed by the World Meteorological Organization and the Korea Meteorological Administration (KMA), using time series and statistical analysis of a 12-year meteorological data set observed from 2000 to 2011 at the Incheon site in Korea. The quality control system includes missing value, physical limit, step, internal consistency, persistence, and climate range tests. Flags indicating good, doubtful, erroneous, not checked, or missing values were added to the raw data after the quality control procedure. The climate range test was applied to the monthly data for air temperature and pressure, and its threshold values were modified from ${\pm}2{\sigma}$ and ${\pm}3{\sigma}$ to ${\pm}3{\sigma}$ and ${\pm}6{\sigma}$, respectively, in order to consider extreme phenomena such as heat waves and typhoons. In addition, the threshold values of the step test for air temperature, air pressure, relative humidity, and wind speed were modified to $0.7^{\circ}C$, 0.4 hPa, 5.9%, and $4.6m\;s^{-1}$, respectively, through standard deviation analysis of step difference according to their averaging period. The modified quality control system was applied to the meteorological data observed by the Weather Information Service Engine in March 2014 and exhibited improved performance compared to the KMA procedures.

• 한국콘텐츠학회논문지
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• 제17권12호
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• pp.617-627
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• 2017

본 연구는 종합병원 입원환자가 인지하는 의료서비스 품질이 만족도와 충성도에 어떠한 영향을 미치는지 알아보기 위하여 경기도 일개 지역에 소재한 종합병원 입원환자 310명을 대상으로 설문조사를 통하여 자료를 수집하여 분석하였다. 본 연구의 주요결과는 다음과 같다. 첫째, 의료서비스 품질이 만족도에 미치는 영향은 수속절차, 입원생활(의사, 간호사), 직원 친절성, 병원 환경 및 서비스가 만족도에 통계적으로 유의미하게 나타났다(p<.001). 둘째, 의료서비스 품질이 충성도에 미치는 영향은 입원생활(간호사), 입원생활(의사), 병원 환경 및 서비스가 통계적으로 유의미하게 나타났다(p<.05). 마지막으로, 입원환자 만족도가 충성도에 미치는 영향은 통계적으로 유의미하게 영향이 있는 것으로 나타났다(p<.001). 의료서비스 품질에 대한 만족도가 높을수록 충성도에 영향을 미치고, 향후 병원 재이용 및 타인에게 병원을 추천하는데 중요한 요인이 되기 때문에 경영진에서 입원환자의 만족도와 충성도를 향상시키기 위해서 의료서비스 품질에 대한 정책을 수립할 경우 반영하여야 할 것이다.

• 한국항만경제학회지
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• 제28권2호
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• pp.95-111
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• 2012

광양항 이용고객을 대상으로 2005년 이후 광양항 컨테이너부두 서비스품질 조사가 수행되었다. 광양항 조사의 분석결과는 서비스 평가체계 중 가장 중요한 서비스차원간의 가중치 산정절차가 수립되지 않아 연차별 또는 경쟁항만 간 정확한 비교가 어려웠다. 특히 가중치 산정에 전문적으로 활용되는 계층분석법에 의한 산정결과가 연차별로 특정 평가항목에 대해서는 90%이상씩 변동하는 등 안정성이 매우 낮아 비교가 불가능했다. 이에 본 연구는 광양항 항만 서비스기업의 품질평가체계를 발전시켜 비용 및 시간 효과적인 품질평가 및 관리 체계의 수립을 지원하는데 목적이 있다. 이를 위해 광양항 이용고객들을 대상으로 2007년~2009년 설문 자료에 확인적 요인분석을 적용하여 서비스품질 평가를 위한 연차별로 안정적이며 비교 가능한 가중치를 사후적으로 산정하는 방법을 제시하고 산정하였다. 새롭게 제안된 방법은 설문항목을 줄이면서 보다 과학적이고 정확한 서비스품질 평가체계를 구축할 수 있게 해주었다. 이 연구를 활용하여 서비스품질을 정확하게 측정할 수 있게 되면, 기간별 및 선도기업과 비교를 통해 항만기업의 경쟁력을 높일 수 있을 것이다.

• 보건교육건강증진학회지
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• 제20권4호
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• pp.67-78
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• 2003

This investigation was performed to summarize a few prominent features of smoking prevention program studies and to evaluate the quality of smoking prevention program studies using the Quality of Study Rating Form (QSRF). 24 school-based smoking prevention programs were subjected to an evaluation of study quality using QSRF. Study quality was 57.29 points out of 100 points on average, so it cannot be said that study quality was good. Most of the studies described the subjects and the intervention contents and intervention time. 50% stated where the intervention occurred specifically, 50% of the studies either discussed a specific theory that justified the use of one or more intervention methods, or they cited literature said to support the chosen intervention method. Only one study assigned subjects randomly to experimental groups or control groups and 50.0% of the studies showed baseline equality. There was no study where subjects were blind to being in the treatment or control group or where subjects were selected randomly by random sampling procedure. 79.2% of the studies had non-treated control groups and 20.8% of the studies had comparison groups with other treatments in the form of either other delivery methods or other contents. Sample sizes were larger than 21 in the experimental group for all studies. 75% of the studies stated face validity of outcome measure or cited from previous literature. 58.3% of the studies tested reliability and 45.8% reported the reliability measure was a figure of .70 or greater. There was no study where those rating outcomes were rated blind, because researchers generally collected data by themselves. Outcome measures were taken only after the intervention was completed and tests of statistical significance were generally referred to statistical method and p value in all studies. All studies met the criteria that follow-up was greater than 75%. The implications for the future studies were discussed.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2007년도 정기학술발표대회 논문집
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• pp.441-445
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• 2007

정부의 대량주택공급정책 등으로 인한 고객중심으로의 시장변화는 자연히 주택 공급업체로 하여금 품질의 경쟁시대를 맞이하도록 하였다. 이러한 품질경쟁시대에서 빠르게 변화하는 고객의 요구품질에 부응하는 주택상품기획 방향을 모색하기위한 선행연구로서 현재 우리 주택시장에서 이루어지는 주택상품의 단위세대 품질의 차별화 사례유형에 대한 실태분석을 실시하였다. 조사 및 분석 결과 많은 사례들이 단순히 마감자재의 고급화나 일시 유행적인 친환경자재의 사용과 부분적이고 단속적인 생활편의품과 설비시스템의 건축요소와의 결합 등을 통한 상품풀질의 차별화를 꾀하고 있었다. 본 연구결과 주택상품의 차별화 기획은 고객을 중심으로 하여 단위세대의 품질 요소 중 건축지향적인 평면 및 인테리어요소와 기술지향적인 설비 및 제품요소의 유기적인 융합을 통합 품질의 차별화가 이루어져야 할 것으로 판단된다. 향후 주택상품기획단계에서는 고객 개념의 재정립을 통한 사람중심의 지속가능한 차별화 계획요소에 대한 연구 및 고객 지향적 주택상품기획 절차의 마련이 필요한 것으로 연구되었다.

• 동력기계공학회지
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• 제22권6호
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• pp.51-57
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• 2018

In Korea, the Air Quality Conservation Act and the Petroleum and Petroleum Substitute Fuel Business Act stipulate certain quality standards for fuels distributed in Korea, thereby striving to reduce vehicle performance and emissions. Domestic petroleum products import and produce all the crude oil from each oil refiner so that the quality of the petroleum product is different according to the characteristics of the crude oil. As a result, vehicles have been improved by using the physical properties calculated through the physical property measurement that has tried to improve the accuracy of the measurement of the energy consumption efficiency of the automobile by using standard fuel from abroad. In this study, the same test procedure and method as the test method of domestic gasoline vehicle emission are applied using four samples of gasoline and the latest gasoline vehicle which are actually distributed, and the performance evaluation is performed. The purpose of this study is to contribute to improvement of vehicle technology and fuel quality by collecting necessary basic data and obtaining data on the effect of differences in gasoline property on vehicle emissions. The results of the test showed that the emission of gases (NMOG, CO) from gasoline vehicles was the most influenced by the sulfur content, unlike the previous studies that the vehicles emission had the greatest influence on the distillation characteristics and the specific gravity of aromatic compounds. The catalytic reaction such as the poisoning action of the three-way catalyst which is the abatement device was interfered and the emission was increased. The distillation characteristics and specific gravity of aromatic compounds were found to affect the emission of vehicles. According to the physical properties of the fuel, the emission difference was 28.0% in the urban mode and 17.6 % in the highway mode.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권6호
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• pp.3074-3091
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• 2019

With the widespread use of the Internet, services for providing large-capacity multimedia data such as video-on-demand (VOD) services and video uploading sites have greatly increased. VOD service providers want to be able to provide users with high-quality keyframes of high quality videos within a few minutes after the broadcast ends. However, existing keyframe extraction tends to select keyframes whose quality as a keyframe is insufficiently considered, and it takes a long computation time because it does not consider an HD class image. In this paper, we propose a keyframe selection method that flexibly applies multiple keyframe quality metrics and improves the computation time. The main procedure is as follows. After shot boundary detection is performed, the first frames are extracted as initial keyframes. The user sets evaluation metrics and priorities by considering the genre and attributes of the video. According to the evaluation metrics and the priority, the low-quality keyframe is selected as a replacement target. The replacement target keyframe is replaced with a high-quality frame in the shot. The proposed method was subjectively evaluated by 23 votes. Approximately 45% of the replaced keyframes were improved and about 18% of the replaced keyframes were adversely affected. Also, it took about 10 minutes to complete the summary of one hour video, which resulted in a reduction of more than 44.5% of the execution time.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제25권6호
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• pp.489-499
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• 2022

Purpose: The survival rate of pediatric patients undergoing liver transplantation has increased considerably. Despite this, the period after transplantation is still complex and poses several challenges to the recipient's family, which is responsible for care management. Recently, more attention has been paid to the impact of this complex procedure on the quality of life of caregivers. Hence, this study is aimed at assessing the quality of life of caregivers of patients who have undergone liver transplantation and the aspects that influence it. Methods: This was an observational and cross-sectional study. From November 2020 to January 2021, short-form-36 questionnaires and additional questions were given to the main caregivers of children and adolescents who underwent pediatric liver transplantation. Results: Thirty-eight questionnaires were completed and the results revealed a lower quality of life in comparison to Brazilian standards, primarily in the mental domains (41.8±14.1 vs. 51.1±2.8; p<0.001). It did not show a significant association with socioeconomic or transplant-related factors, but it did show a negative impact on parents' perception of the child's health. Parents who reported worse health status for their children had a lower mental quality of life (44.1±13.8 vs. 33.3±12.6; p<0.05). Conclusion: The caregivers of transplanted children have a lower quality of life than those of the local population. Psychological assistance should be routinely provided to parents for long-term follow-up to mitigate potential negative effects on the transplanted child's care.

• 한국한의학연구원논문집
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• 제1권1호
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• pp.471-476
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• 1995

Natural products used for oriental medicine often come from various geographical sources, after several different distribution channels. Therefore some form of quality control procedure is required to safeguard naturl products for prescriptions purposes. To achieve this, systematic apprroaches such as morphological examination, microscopic analysis of powdered herbs and chemical analysis can be carried out. However, to ensure absolute criteria for quality assurance of natural products, DNA fingerprinting method such as RAPD(Random amplified polymorphism DNA) analysis can be used for authentication of natural products for authenticatin of natural products. In this study, warious oligonucleotide primers will be synthesized for the detection of RAPD markers and also parameters of affecting PCR(Polymerase Chain Reaction) in the detection of RAPD markers of rare and high-priced natural products will be studied with genomic DNA of chosen samples.