• Journal of Forest and Environmental Science
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• 제30권4호
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• pp.315-321
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• 2014

Forest timber production potential of any site is oftentimes measured quantitatively by site index, which is defined as dominant height of a particular stand at a specified age. A site index was developed for estimating site quality of monoculture Pinus caribaea plantations in southwestern Nigeria using a base age of 25 years. Dominant height data were collected from 60 Temporary Sample Plots (TSPs) of $20{\times}20m$ in plantations of 15 to 37 years. Linear and non-linear models as been widely applied in quantitative forest measurements were fitted to dominant height-age data and the best site index equation is : $SI=Exp^{(InHd-23.495(A^{-2}-0.04)}$. The site index curves constructed for the three sites (Omo Forest Reserve - OFR (J4), Oluwa Forest Reserve - OLFR and Shasha Forest Reserve - SFR) across the southwestern Nigeria using the chosen equation revealed that a 15 year old Pinus caribaea in the study area attained average dominant heights of 25, 22 and 21 m in OFR (J4), OLFR and SFR respectively. The site index equation and curves proffer veritable insight into better silvicultural options and management practices for the future plantations suitable sites.

• Asian Journal of Business Environment
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• 제12권1호
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• pp.17-24
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• 2022

Purpose: This study aims to determine the effect of economic agents, such as the amount of government expenditure on the environment, households, manufacturing industry, and shipping activities; on environmental degradation in Indonesia. Research design, data, and methodology: This study is conducted with 264 observations from panel data of 33 provinces during 2010-2017. Environmental degradation is measured by using the environmental quality index collected from Indonesian Ministry of Forestry and Indonesian Central Bureau of Statistics. Three testing models are used to test the panel data, namely Common Effect Model (CEM), Fixed Effect Model (FEM), and Random Effect Model (REM). Results: The research findings show that the amount of government expenditure on the environment, households, and shipping activities have a negative and significant effects on environmental degradation, while the number of manufacturing industry has positive and significant effect on environmental degradation. Unlike the previous studies, the result also shows that government expenditure on environmental has a positive and significant effect on environmental quality index. Conclusion: It can be concluded that even though Indonesian government spent a low budget on environment, their environmental regulation has succeeded both in reducing environmental degradation and increasing the environmental quality as indicated by Indonesian environmental quality index.

• 보건행정학회지
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• 제7권1호
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• pp.155-182
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• 1997

Objectives : This study was designed to compare North Korea and South Korea in measures of the quality of life (physical quality of life index and human development index) and to investigate the impact of selected medical and socioeconomic factors on PQL variables. Data and Methods : The World Bank, the United Nations Development Programme, and Population Reference Bureau were the principal sources of statistical data of 121 countries. Variables included infant mortality, life expectancy at birth, literacy rate, secondary school enrollment (male and female), GNP per capita, population per doctor, daily calorie supply per capita, and a composite PQL index. The Ordinary Least Square model was employed for cross-countries analysis. Findings : Both countries under quite different political and economic systems saw big improvememts in the quality of life, reducing mortality and prolonging life expectancy during the past three decades. In recent decad, however, North Korea has experienced abrupt exacerbation in the quality of life. Significant improvements in infant mortality of the population wer attributable mainly to GNP per capita and the secondary school enrollemt of female. The principal predictors of life expectancy at birth were population per doctor, infant mortality, and literacy rate. The secondary school enrollment of female and population per doctor were significantly associated with improvements in the physical quality of life index (PQLI). Conclusion : The results of this study confirmed a point illustrated by other studies : The association between quality of life as a measure of health status and socioeconomic factors was strong and positive. The important contribution of educational attainment in general, female education level in particular to improvements in the quality of life deserves good news for building an integrated health care system in the reunified Korea, taking into account the high level of education two koreas are enjoying. Meanwhile, when a sharp drop in the quality of life has been observed in North Korea under serious economic difficulties and food shortage in recent decade, the significant contribution of economic development to improvements in the quality of life poses bad nows for reunifying Korean health care in economic terms.

• 대한교통학회지
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• 제33권4호
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• pp.417-429
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• 2015

본 연구에서는 고속도로에서 수집되는 차량검지기 자료를 대상으로 자료의 품질에 영향을 미치는 요인을 분석하여, 신뢰성 있는 교통자료의 관리 및 활용을 위한 교통자료 품질 통합평가지표를 개발하였다. 이를 위하여 국내외 자료품질평가에 대한 현황 조사 및 분석을 수행하여 시사점을 도출하였다. 품질관리지표는 기존의 고속도로 검지자료 품질평가에 사용되고 있는 평가지표인 완전성과 유효성뿐만 아니라, 이를 수정 보완한 지표들을 제시하였으며, 교통자료의 특성을 반영한 시공간 일관성 지표와 결측심각성 지표를 신규지표로 제시하였다. 또한, 개별 품질 평가지표들을 통합적으로 관리할 수 있는 통합 평가지표를 개발하고 평가 프레임워크를 제시하였다. 통합 품질평가지표는 쌍대비교를 통한 설문조사 방법으로 가중치를 산출하는 AHP기법과 자료의 변동성을 고려하여 가중치를 산출하는 엔트로피방법을 통합하는 혼합가중치 산출 방안을 적용하여 도출하였다. 본 연구의 결과물은 교통자료의 효율적 관리를 가능하게 하고, 교통자료의 품질을 높일 수 있는 품질관리체계의 중요 구성요소로 활용될 것으로 기대된다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.353-356
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• 2005

In Taiwan, there are more the one hundred GPS tracking stations maintained by Ministry of the Interior (MOI), Academia Sinica, Central Weather Bureau and Central Geological Survey. In the further, they may be instead of the GPS controlling points after giving the lawful status. In other words, the engineers don't need to survey on the reference points when they are surveying in the field. They only need to download the GPS data via internet and process the observations in their company. The precise coordinates of the unknown points will be obtained. Therefore, the data qualities of the tracking stations are more and more important. In this study, six data quality indexes were adopted as follows: observations, cycle slips, multipath on L1, multipath on L2, clock offset and frequency stability. Besides, the relationships of the indexes and the positioning precision were found. The frequency stability of GPS receiver is the most important index, the cycle slip is the second index and the mutlipath is the third index. According to the results, the auto-analytical system of GPS data quality was established and the tracking stations were monitored. When the receiver got some problem or the station's environment changed, we hope to find and resolve the problems earlier to make sure the high data quality of the tracking stations. Moreover, we try to design a data quality verification to help users and let the engineers have more and more confidence when they use the data of GPS tracking stations.

• 품질경영학회지
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• 제41권3호
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• pp.327-335
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• 2013

Purpose: The purpose of this study is to suggest the modified 'Korean Standard-Quality Excellence Index' model and analyze the improvement effect with survey data by comparing the properness between current and suggested model result. Methods: The collected data through the survey were analyzed using paired t-test and unbalanced ANOVA method for testing the consistency of two customer satisfaction evaluating categories and comparing the current model to suggested model for confirming the improvement of performance. Results: The statistical analysis result shows that adjusted model using prior information improves the consistency between two customer satisfaction in case of short life-cycle product. Also long life-cycle product case, the result shows difference gap decreasing with same direction. Conclusion: Considering statistical model for QEI reflecting the characteristic of product group such as life cycle seems to be meaningful. Since index may be compared yearly base for checking the trend, careful approaching without big change should be considered for application.

• 경영정보학연구
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• 제13권1호
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• pp.1-11
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• 2011

본 연구는 한국 금융산업에서의 기업 데이터 품질이 경제적인 성과에 주는 영향을 2008년과 2009년 자료를 이용하여 실증적으로 분석하였다 데이터 품질은 한국데이터베이스진흥원에서 측정한 데이터 품질관리 프로세스 지수와 데이터 품질기준을 이용하였으며, 기업의 재무 성과는 금융감독원의 금융 통계정보시스템을 이용하여 수집하였다. 분석 결과, 데이터 품질은 기업의 매출액, 영업이익, 부가가치에 통계적으로 유의한 영향을 주었다. 데이터 품질관리 프로세스 지수가 1만큼 증가하면, 부가가치는 약 2.3%가 증가한다. 또한 데이터 품질기준이 1만큼 증가하면, 부가가치는 약 72.6%가 증가한다. 기업의 경영자는 데이터 품질을 개선시키도록 노력해야 하고, 경제정책 입안자들은 기업들이 데이터 품질에 관심을 갖고 데이터 품질을 개선시키도록 하는 유인책과 정책 방향을 수립해야 한다.

• 복식
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• 제61권1호
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• pp.34-46
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• 2011

The purposes of this study are to classify apparel service quality elements using the Kano's model, and to identify how much service quality can increase the degree of customer satisfaction when the service quality is fully fulfilled. Women over 20 years-old from metropolitan areas participated in the study. Data from 254 questionnaires were used for the statistical analysis. The results were as follows: First, 17 service quality elements were categorized into one-dimensional quality which could lead to both satisfaction and dissatisfaction, and 3 services quality elements were categorized into indifferent quality which neither result in satisfaction nor dissatisfaction. Second, potential customer satisfaction improvement(PCSI) Index was developed using Kano model and CS coeffient. Findings of this study provide both industry and academic researchers with a guide to increase customer satisfaction in fashion retail store.

• 정보화정책
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• 제18권2호
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• pp.85-98
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• 2011

이 논문에서는 OECD 주요국의 이동통신사업자 통계자료를 이용하여 이동통신 통화품질을 지표화하고자 하였다. 먼저 각국의 이동통신 1위 사업자의 최근 5년간의 자본지출(CapEx) 합계를 통화품질을 나타내는 대리변수로 설정하였다. 이 CapEx를 피설명변수로 하고 인구, 면적, 3G 커버리지, 이동통신시장의 허핀달-허쉬만 지수(HHI), 사업자평균 EBITDA 마진율, 1위사업자의 매출액점유율을 설명변수로 하여 회귀분석을 수행하였다. 이 회귀분석에서 CapEx 중 인구와 면적에 의해 설명되지 않는 부분을 통화품질지표로 간주하였다. 이렇게 구한 각국의 통화품질지표를 비교한 결과, 한국과 일본의 통화품질이 프랑스, 영국, 독일에 비해 높을 것이라는 점을 유추할 수 있었다.

• 한국지역지리학회지
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• 제14권5호
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• pp.553-572
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• 2008

1990년대 중반 국제금융위기를 계기로 경제협력개발기구, 국제통화기금, 유럽연합통계국 등 국제기구와 개별국가의 통계작성기관에서 통계품질관리 운동이 활발하게 전개되고 있다. 한국에서도 2006년부터 정부승인통계에 대한 품질상태를 정밀 진단하는 국가통계품질 제고일정을 추진하고 있다. 통계품질에 대한 이러한 움직임은 전사적 통계품질 관리 접근에 입각하고 있다. 본 논문에서는 정확성, 시의성 / 정시성, 관련성 접근성 / 편의성, 비교성 / 일관성, 서비스성 / 해석성, 효율성이라는 품질평가 차원을 중심으로 통계작성환경, 작성절차의 적합성, 현장조사의 정확성, 공표자료의 충실성, 이용자 만족도, 품질개선노력 등 5개 부문에 걸쳐 평가하는 통계청 품질관리 시스템에 근거하여 지가변동률 통계를 대상으로 전사적 품질관리 접근에 의한 통계품질을 평가한다.