• 한국지하수토양환경학회지:지하수토양환경
• /
• 제29권3호
• /
• pp.23-36
• /
• 2024

Miryang City, the study area, has a water supply rate of 87.4%, which is 12% lower than the national water supply rate of 99.4%, but has a high dependence on groundwater due to the high ratio of farms. In agricultural areas, contamination becomes relatively more critical, requiring significant attention to the management and conservation of groundwater resources. This study aims at estimate groundwater vulnerability of Miryang City using the DRASTIC index map, Piper diagram, and water quality data to correlated with the DRASTIC index. The results from DRASTIC map were divided into five classes: very high, high, moderate, low, and very low. The areas in central and southern part of study area, which are characterize by a very high index with [Ca-Cl] and [Na-Cl] water types, covering a large alluvium with the Miryang River and Nakdonggang River. In addition, a correlation analysis between groundwater quality parameters and the DRASTIC index was carried out. Chloride, sodium, and sulfate ions showed a weak relationship with DRASTIC index, with correlation coefficient was 0.507, 0.487 and 0.344, respectively. These results suggest that aquifer media, soil media, hydraulic conductivity, and chloride ion are important factors for groundwater vulnerability.

• 품질경영학회지
• /
• 제47권3호
• /
• pp.479-496
• /
• 2019

Purpose: The purpose of this research is to develop defense quality evaluation model in order to improve the problem of private sector quality evaluation model and propose the total integrated defense quality management model which enables to evaluate not only large defense industry, but also small-medium industry. Methods: This paper consider the characteristics on ISO 9001 Quality Management System, single PPM, PASS and defense quality and develop defense quality maturity model and index which enables to measure the current quality management level and characteristics and to evaluate operational characteristics in each maturity level for domestic defense industry. Results: From 176 DQMS certified defense industry, the defense quality maturity level is 68,2, C grade. The large defense industry shows, 80.9, A grade; medium industry 69.7, C grade; small-medium industry shows 54.1, D grade. Through the classified types of industries, the current level of quality management of defense industries was diagnosed and the areas to be supplemented for the total quality management were identified. Conclusion: Developed DQMI can be used as the basic information for spreading quality management activities in the defense industry by diagnosing the overall quality management of existing defense industries and quantifying the ambiguity of non-metric measurements and measurement standard that were presented as the threshold of the defense quality management system certification process.

• 품질경영학회지
• /
• 제48권2호
• /
• pp.309-328
• /
• 2020

Purpose: The purpose of this study is to find a way to improve the quality of medical tourism education services in Korea. Methods: This study used a method of conducting a survey of students who have completed medical tourism education and customer satisfaction coefficient and potential customer satisfaction index were calculated by applying the Kano model. Results: The results of this study are as follows; First, Eight medical tourism education service quality factors were classified as an attractive quality attribute. Second, Thirteen medical tourism education service quality factors were classified as an one-dimensional quality attribute. Third, Online education operation factor was classified as an indifferent quality attribute. Fourth, Instructor quality factor and physical environment quality factor showed relatively high better and high worse coefficients. Finally, According to the PCSI index, it was found that the scope of improvement was the largest when focusing intensively on the quality factors of instructors. Conclusion: This study suggests strategic implications for nurturing excellent professional manpower through quality improvement of education services by identifying the quality factors of major medical tourism education services perceived by students.

• 한국콘텐츠학회논문지
• /
• 제10권1호
• /
• pp.426-435
• /
• 2010

이 연구는 워터파크의 서비스품질 척도를 개발하여 타당도와 신뢰도를 검증하는데 목적을 두고 있다. 설문지의 타당도를 검증하기 위하여 전문가회의 및 패널조사, 탐색적 요인분석과 확인적 요인분석을 실시하였으며, 신뢰도를 검증하기 위하여 문항분석, 평가자간 신뢰도, 그리고 내적 일관성 신뢰도 검증을 실시하였다. 이상과 같은 연구방법 및 절차를 통하여 이 연구에서는 다음과 같은 결론을 도출하였다. 첫째, 서비스품질 척도의 타당도는 매우 높다. 즉, 서비스품질 척도는 쾌적성 청결성, 안전성, 종사원, 가격, 프로그램, 주시설, 부대시설, 접근성, 판촉으로 탐색 확인되었으며, 쾌적성 청결성 요인의 설명력이 가장 높다. 둘째, 서비스품질 척도의 신뢰도는 매우 높다. 즉, 서비스품질 척도는 문항과 영역간 문항과 총점간 상관정도가 높으며, 내적 일관성 신뢰도는 판촉 요인을 제외하고 Cronbach's $\alpha$값이 .603이상이다. 판촉 요인의 신뢰도는 .60이하이다. 이상의 내용을 종합해 보면, 서비스품질 척도는 경험적으로 매우 타당하고 신뢰할 수 있는 척도임을 알 수 있다. 워터파크의 서비스품질을 향상시키기 위해서는 서비스품질 주요 요인을 파악하여 경영혁신에 반영해야 할 것이다.

• 환경영향평가
• /
• 제30권6호
• /
• pp.380-392
• /
• 2021

어린 학생들에 대한 HQ (Hazard Quotient) 기반으로 학교교실 실내 공기질 지수 (IAQI-S)를 개발하였다. IAQI-S는 PM₁₀, PM_2.5, CO₂를 포함하며, IAQI-S의 기준농도는 지정된 HQ값을 통해 산출하였다. 본 연구에서 개발한 IAQI-S를 이용하여 2017년 11월부터 2020년 12월까지 실시간으로 측정한 전국 46개 학교 123개 학급을 평가해보았다. 종합지수 평가 결과, PM₁₀의 93.1%, PM_2.5의 94%가 '좋음'과 '보통' 등급에 포함되었다. 8시간 예측 이동 평균을 기반으로 한 IAQI-S는 CAI(Comprehensive Air-quality Index) 및 외국에서 발표되었던 IAQI와 비교하였다. IAQI-S는 CO₂를 포함하며 대기질지수 (CAI)에 비해 더 엄격한 수준으로 구성되어 있음을 알 수 있었다.

• 한국습지학회지
• /
• 제24권4호
• /
• pp.256-267
• /
• 2022

본 연구는 대청호 상류에 있는 서화천 유역을 대상으로 지난 5년간 측정된 장기간의 수질모니터링 자료를 이용하여 수질 현황 및 추세를 분석하였다. 서화천 유역은 대청호의 녹조 발생 감소 및 수질 개선을 위한 사업이 진행되고 있으며 상수원 수질 관리를 위해서 지속적 관리가 필요하다. 현재 수질 평가는 수질 관리 지점을 파악하는 것이 목적이며 좋은물 등급과 통합수질지수(Water Quality Index, WQI)를 사용하였다. 추세 평가는 Mann-Kendall test와 Sen's Slope를 이용하여 수질 개선사업을 통한 효과를 평가하였다. 평가결과, 현재는 수질지수를 통해 수질 관리가 필요한 유역과 시기를 확인하였으며 추세분석을 통해 개선사업으로 인한 효과를 확인하였다. 본 연구를 통해 장기 수질모니터링 자료를 이용한 수질 현황 및 개선 효과를 검토할 수 있어 향후 비슷한 유형의 유역에서 적용 가능하리라 판단된다.

• 산업경영시스템학회지
• /
• 제41권1호
• /
• pp.118-127
• /
• 2018

Recently, service quality must reflect several demands of customers who show rapid and various changes so as to be compared with the past. So, objective and rapid measuring methods for service quality are necessary. For them, first of all, service company must calculate their standard of service quality accurately by measuring service quality exactly. Kano classified the degree of influence that is the degree of correspondence of the quality attributes of products and services to the subjective satisfaction of customers. As a result, the types of qualities are classified as attractive, must be, one dimensional, and indifference attributes. They have been widely used quality attributes in various industrial fields up to now. However, Kano model has a limit that it ignores the characters of the next frequent numbers even though there are not much gap comparing to the most frequent number in the questionnaire answers. The limit is attributed to the character of Kano model that the most frequent number is accepted as the only quality character. Timko calculated the customer satisfaction coefficient by using Kano's method and studied the differences in quality character by classifying the quality characteristics in a graphical way through the relationship between the satisfaction and the dissatisfaction coefficient. In this study, we used the quality level determination method of the 7-point Likert scale, which takes the weight into account, to complement the deficiencies of the existing Kano model. We also developed and applied a Potential Satisfaction Level (P) and Potential Customer Demand Improvement (PCDI) Index to present a new approach to the determination of service quality attributes. To measure the level of potential service satisfaction and to understand the degree of improvement, we collected specimens of 51 participants who has been trained in the National Strategy Business Training Program, which has been managed by government agent, and analyzed the results.

• 한국물환경학회지
• /
• 제39권4호
• /
• pp.269-287
• /
• 2023

The genus-level biotic index of benthic macroinvertebrates (Benthic Macroinvertebrates Genus Index, BMGI) was developed and applicated based on the data collected from 13,347 sampling units of 814 sites from 2010 to 2021 in Korea. Tolerant values of 274 indicator taxa were established by analyzing the relationship between the relative frequency and abundance of indicator taxa and the water quality index considering biochemical oxygen demand (BOD₅), total suspended solids (TSS), and total phosphorus (T-P). BMGI showed a slightly higher correlation with water quality than the species-level biotic index (Benthic Macroinvertebrates Index, BMI) that was developed and applied in Korea. Although the BMGI does not contain species-level information, the reason why BMGI shows higher applicability than BMI seems to be due to the increase in the number of indicator taxa and the decrease in the misidentification of immature aquatic insects. The coefficient of determination in multiple regression with BOD₅, TSS, and TP for BMGI was 0.62 in the long-term averaged data of 814 sites, and the standardized coefficient of BOD₅ was -0.46, TSS was -0.17 and T-P was -0.21, respectively. As a result of the evaluation by BMGI, of the 814 sites, 38% were in good, 25% in fair, and 37% in poor condition.

• 한국소음진동공학회논문집
• /
• 제22권4호
• /
• pp.318-327
• /
• 2012

The operating sound radiated from a laser printer includes tonal noise components caused by the rotating mechanical parts such as gear, shaft, motor, fan, etc. The negative effects of the tonal noise components need to be considered in the process of developing a sound quality index for the quantitative evaluation of the emotional satisfaction in terms of psycho-acoustics. However, in a previous paper, it was confirmed that the Aures tonality did not have enough correlation with the results of jury evaluation. The sound quality index based on loudness, articulation index, fluctuation strength has a little problem in considering the effects of rotating mechanical parts on the sound quality. In this paper, to solve the tonality evaluation problem, the calculation algorithm of Aures tonality was investigated in detail to find the cause of decreasing the correlation. The new tonality evaluation model was proposed by modifying and optimizing the masking effect, loudness ratio, and shape of weighting curve based on the basic algorithm of Aures tonality, and applied to two kinds of operating sound groups in order to verify the usefulness of proposed model. As a result, it is confirmed that the proposed tonality evaluation model has enough correlation and usefulness for expressing the tonalness in the operating sounds of laser printers. In the following paper, this results will be used to model the sound quality index as the input data by using the classification algorithm.

• 한국산학기술학회논문지
• /
• 제11권8호
• /
• pp.2835-2839
• /
• 2010

본 논문에서는 특허자료의 분석을 통해 무인 항공기 관련기술의 기술력을 살펴보고자 한다. 이를 위해 국가별 출원인수, 기술별 출원인수, 연도별 출원인수, 피인용 건수를 활용한다. 기술력을 분석하기 위해 현시기술비교우위지수를 변형한 현시특허우위지수(RPA)와 특허분석에서 사용하는 특허영향력지수(PII)를 활용하기로 한다. 현시특허우위지수는 특허의 양적인 비교지수로써 0을 기준으로 "+"일때는 경쟁력이 비교 우위에 있으며, "-"일때는 경쟁력이 비교 열위에 있다. 특허영향력지수는 다른 특허가 해당 특허를 얼마나 인용하였는가를 나타내는 비율로 1 이상 일때는 질적 수준이 높고 1이하 일때는 질적 수준이 낮다. 이러한 두 가지 지표를 활용하여 국가별, 기술별 경쟁력을 비교하였다.