• Title, Summary, Keyword: 대체

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Comparisons of Imputation Methods for Wave Nonresponse in Panel Surveys (패널조사 웨이브 무응답의 대체방법 비교)

  • Kim, Kyu-Seong;Park, In-Ho
    • Survey Research
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    • v.11 no.1
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    • pp.1-18
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    • 2010
  • We compare various imputation methods for compensating wave nonresponse that are commonly adopted in many panel surveys. Unlike the cross-sectional survey, the panel survey is involved a time-effect in nonresponse in a sense that nonresponse may happen for some but not all waves. Thus, responses in neighboring waves can be used as powerful predictors for imputing wave nonresponse such as in longitudinal regression imputation, carry-over imputation, nearest neighborhood regression imputation and row-column imputation method. For comparison, we carry out a simulation study on a few income data from the Korean Welfare Panel Study based on two performance criteria: predictive accuracy and estimation accuracy. Our simulation shows that the ratio and row-column imputation methods are much more effective in terms of both criteria. Regression, longitudinal regression and carry-over imputation methods performed better in predictive accuracy, but less in estimation accuracy. On the other hand, nearest neighborhood, nearest neighbor regression and hot-deck imputation show higher performance in estimation accuracy but lower predictive accuracy. Finally, the mean imputation shows much lower performance in both criteria.

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Factors Affecting the Intention of Nurses and Caregivers to Use Alternative Medicine (간호사와 요양보호사의 대체요법 이용의사에 영향을 미치는 요인)

  • Jeong, Ok Min;Kim, Meong ju
    • Journal of Digital Convergence
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    • v.16 no.3
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    • pp.533-542
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    • 2018
  • The purpose of this study was to identify the perception of alternative medicine and factors affecting the intention to use for nurses and caregiver. In order to achieve the purpose of the study, this study was conducted to examine the awareness of alternative medicine, use experience, and intention to use for 400 workers in hospitals and nursing homes. The results of the analysis are summarized as follows. Recognition of alternative medicine effected on reliability of alternative medicine, awareness and use experience. In addition, experience with alternative medicine has a negative impact on the intention to use alternative medicine. In conclusion, this study suggested that the development of alternative medicine requires efforts to improve the therapeutic effect of alternative medicine.

A Study for the Institutionalization of Alternative Medicine (대체의학의 제도화를 위한 연구 - 법률정보와 공인화 중심으로 -)

  • Kang, Kyung-Su
    • Proceedings of the Korean Society of Computer Information Conference
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    • pp.155-158
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    • 2013
  • 사회 전반에 의료의 다원화 혹은 다변화를 요구하는 열망이 높아져 가고 있다. 이는 '대체의학'의 도입과 직결된 문제라 할 수 있다. 본 연구에서는, 최근 법률정보에 따르면 헌법재판소의 의료법에 대한 합헌결정으로 불거진 대체의학의 제도화 움직임을 시작으로 향후 대체의학의 제도화 모델을 결론으로 그 내용을 담았다. 이는 대체의학을 '왜' 도입하여야 하는 가의 논의단계를 지나 '어떻게' 대체의학을 도입할 것인가의 문제로 논의의 방향성을 제시함과 동시에 선행연구들을 면밀히 분석하여 재조명하므로 써 지금까지 축적되어온 연구 자료들을 충분히 고찰 하고자 하였다. 헌법재판소 판결 및 대법원 판례를 바탕으로 대체의학으로 야기되는 법적 쟁점 사항을 분석하고 대체의료행위가 제도화 되기 위한 선결요건을 도출하였다. 또한 무분별하게 사용되고 있는 대체의학에 관한 용어 사용을 재정립하고 향후 대체의학을 공인화 한다면 그 방법은 어떻게 되어야 하는지 그 방안을 제시, 방안 별 장단점을 분석하였다.

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A Study of Garlic-Yackwa Development 1. Quality Characteristics of Garlic-Yackwa Substituted with Different Amounts of Garlic Juice (마늘약과의 개발에 관한 연구 1. 마늘즙 대체량을 달리한 마늘약과의 품질특성)

  • 문숙임
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.32 no.8
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    • pp.1285-1291
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    • 2003
  • This study was carried out to find optimum substitution amounts of garlic juice for the purpose of garlic-Yackwa development. Five experimental groups containing 0 t.s, 1/2 t.s, 1 t.s, 1 and 1/2 t.s, and 2 t.s of garlic juice per 1 cup of flour were compared with basic group containing 2 t.s of ginger juice per 1 cup of flour (ginger-Yackwa), by Hunter's colorimetry, texture profile analysis and sensory evaluation. In Hunter's color value, Yackwa, substituted garlic juice from 1/2 t.s to 2 t.s per 1 cup of flour for ginger juice, were lower than ginger-Yackwa. The higher amounts of garlic juice in garlic-Yackwa showed the lower tendancy of L and a values. The b value of garlic-Yackwa containing from 0 t.s to 2 t.s of garlic juice was higher than that of ginger-Yackwa. The higher amounts of garlic juice in garlic-Yackwa showed the higher tendancy of b value. In the texture characteristics, hardness, adhesiveness, springiness and chewiness of all garlic-Yackwa were significantly lower than those of ginger-Yackwa. Cohesiveness of garlic-Yackwa containing from 1 t.s to 2 t.s of garlic juice was significantly higher than that of ginger-Yackwa. Gumminess of Yackwa with garlic juice was higher ($1_{1/2}$ t.s, 2 t.s) than that of ginger-Yackwa, or lower (0 t.s∼l t.s) than that of ginger-Yackwa. The higher amounts of garlic juice in garlic-Yackwa showed the higher tendancies of hardness, cohesiveness and gumminess, while springiness and chewiness showed vice versa. In sensory evaluation, the higher amounts of garlic juice in garlic-Yackwa showed the better color, appearance, flavor, taste and overall acceptability. Especially garlic-Yackwa with 2 t.s of garlic juice showed the best color, appearance, taste, overall acceptability among them. Garlic-Yackwa with 2 t.s of garlic juice evaluated the best, while ginger-Yackwa evaluated the worst. In conclusion, these results indicated that 2 t.s of garic juice per 1 cup of flour could be very useful as a substitute for ginger juice in developing garlic-Yackwa.

Defensive strategy against FMS on telecommunication (유무선 대체에 따른 통신사업자의 대응 전략)

  • 송연경
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.525-528
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    • 2004
  • 세계 각국에서 무선전화가 유선전화를 추월하는 유무선 대체현상이 나타나고 있다. 이러한 유무선 대체는 크게 엑세스 대체와 호 대체로 나눌 수 있다. 최근에는 엑세스 대체현상도 활발해 유럽의 경우 가정의 12%정도가 이동전화만을 사용함으로써 고정전화의 호 사용빈도가 줄어들고 있는 추세이다. 따라서 본 고에서는 이러한 유무선 대체 현상이 발생하는 원인 및 사례를 살펴보고 그를 통해 각 사업자가 유무선 대체를 방지 또는 지연시킬 수 있는 전략을 제시하고자 한다.

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An Imputation for Nonresponses in the Survey on the Rural Living Indicators (농촌생활지표조사에서 무응답 대체 : 사례)

  • Cho, Young-Sook;Chun, Young-Min;Hwang, Dae-Yong
    • The Korean Journal of Applied Statistics
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    • v.21 no.1
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    • pp.95-107
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    • 2008
  • Survey on the rural living indicators was the statistic approved from National Statistical Office and the survey executed by rural resources development institute. This study was used the raw data of survey on the rural living indicators in 2005. After editing procedure for raw data, we were studied 1,582 households which is acquired through elimination of case included nonresponses, and imputed a nonresponses of 15 item selected from 146 item. The imputation methods and efficiency of imputation for simulation was adapted differently from type of data. For continuous data, we imputed the nonresponses with mean imputation, regression imputation, adjusted grey-based k-NN imputation(DU, DW, WU, WW) and compared the results with RMSE. For categorical data, we imputed the nonresponses with mode method, probability imputation, conditional mode method, conditional probability method, hot-deck imputation, and compared the results with Accuracy. By the results, regression imputation and adjusted grey-based k-NN imputation appropriated for continuous data and hot-deck imputation appropriated for categorical data.

표고버섯가루와 지방대체제를 첨가한 저지방 소시지의 품질특성

  • Bang, Ju-Hwa;Jeon, Sun-Sil;Jin, Gu-Bok
    • Proceedings of the Korean Society for Food Science of Animal Resources Conference
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    • pp.204-208
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    • 2004
  • 표고버섯가루 첨가량과 지방대체제의 첨가 유무에 따른 저지방 소시지의 이화학적 및 조직학적인 성상에 대하여 조사하였고 기존의 유화형 소시지와 유사한 성상을 갖는 저지방 처리구를 선별하기 위하여 본 연구를 실시하였다. 지방대체제를 첨가한 경우 수분함량이 높았으나 적색도는 낮았다. 표고버섯 첨가량이 증가함에 따라 명도는 낮았으나 황색도는 증가하였다. 경도의 경우 지방대체제 첨가와 표고버섯 첨가량에 따라 상관관계를 보였으며 각각의 표고버섯 첨가량에서 지방대체제의 첨가는 저지방 소시지의 경도를 낮추었다. 한편 지방대체제를 첨가하지 않은 경우 경도는 표고버섯가루의 첨가량이 증가할수록 유의적으로 낮았으나, 지방대체제를 첨가한 경우 표고버섯 첨가량이 1% 이하에서는 감소하였으나 그 이상 첨가시 변화가 없었다. 관능검사결과 지방대체제와 표고버섯가루 1% 이상 첨가 시 비 선호경향을 보였다. 결론적으로 지방대체제를 첨가하지 않을 경우 표고버섯 1% 첨가는 기존의 유화형 소시지와 유사한 경도를 보였으나, 지방대체제를 첨가한 경우 표고버섯가루 1% 이상 첨가는 불필요한 것으로 판단된다.

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Case Study : Hydrological Function Evaluation of Replacement Wetlands in the River (하천에 대한 대체습지의 수문학적 평가)

  • Choi, Youngjoo;Kim, Jungwook;Hong, Seungjin;Kim, Jaegeun;Kim, Hungsoo
    • Proceedings of the Korea Water Resources Association Conference
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    • pp.172-172
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    • 2016
  • 지난 2008년부터 2013년까지 우리나라는 홍수방어 및 가뭄을 대비하기 위하여 하천정비사업인 4대강 사업을 실시하였다. 또한, 4대강 사업은 환경적인 측면을 고려하기 위해 하천변에 대체습지를 조성하였다. 하지만, 대체습지 조성 이후 대체습지에 대한 평가가 제대로 이루어지지 않아 관리하는데 있어 문제가 발생하고 있다. 따라서 대체습지에 대해 기능을 평가하고 평가 결과를 통해 관리방안을 수립하는 것이 필요하다. 현재 습지의 기능은 수문학적, 생태학적, 지형학적으로 구분하여 평가하고 있다. 본 연구에서는 대체습지의 수문학적 평가를 위해 필요한 대체습지 제원 및 수리수문요소 등 관련자료를 수집하였다. 빈도해석과 수문모형을 통해 침수빈도, 침수심 등을 분석하여 수문학적 측면으로 대체습지를 평가하였다. 본 연구의 결과는 4대강 사업으로 조성된 대체습지의 관리방안을 수립하는데 기초자료로 활용될 것으로 기대된다.

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Imputation Methods for Nonresponse and Their Effect (무응답 대체 방법과 대체 효과)

  • 김규성
    • Proceedings of the Korean Association for Survey Research Conference
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    • pp.1-14
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    • 2000
  • We consider statistical methods for nonresponse problem in social and economic sample surveys. To create a complete data set, which does not include item nonresponse data, imputation methods are generally used. In this paper, we introduce some imputation methods and compare them with one another. Also, we consider some problems, which occur when an imputed data set is treated as a response data set. Due to the imputed values, the true variance of the estimator after imputation is increased by the imputation variance. However, since usual naive variance estimator constructed from the imputed data set does not estimate the imputation variance, the true variance of the estimator after imputation tends to be underestimated. Theoretical reason is investigated and serious results are explained through a simulation study. Finally, some adjusted variance estimation methods to compensate for underestimation are presented and discussed.

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Imputation Methods for Nonresponse and Their Effect (무응답 대체 방법과 대체 효과)

  • Kim, Kyu-Seong
    • Survey Research
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    • v.1 no.2
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    • pp.1-14
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    • 2000
  • We consider statistical methods for nonresponse problem in social and economic sample surveys. To create a complete data set, which does not include item nonresponse data, imputation methods are generally used. In this paper, we introduce some imputation methods and compare them with one another. Also, we consider some problems, which occur when an imputed data set is treated as a response data set. Due to the imputed values, the true variance of the estimator after imputation is increased by the imputation variance. However, since usual naive variance estimator constructed from the imputed data set does not estimate the imputation variance, the true variance of the estimator after imputation tends to be underestimated. Theoretical reason is investigated and serious results are explained through a simulation study. Finally, some adjusted variance estimation methods to compensate for underestimation are presented and discussed.

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