• 제목/요약/키워드: sampling points

검색결과 638건 처리시간 0.027초

독거노인 당뇨병 환자의 건강정보이해능력과 당뇨지식이 자가간호 이행에 미치는 영향 (Effects of Health Literacy and Knowledge on Diabetic Self-care in the Elderly with DM Living Alone)

  • 김난희;양영란;이명하
    • 지역사회간호학회지
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    • 제27권4호
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    • pp.370-379
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    • 2016
  • Purpose: The aim of this study was to evaluate the level of self-care adherence in the elderly with diabetes mellitus (DM) who have lived alone, and to investigate the association between health literacy, diabetic knowledge and self-care adherence. Methods: Descriptive research using the cross-sectional approach was conducted. Data was collected by using a convenience sampling of 201 participants who aged sixty-five years old or more and have lived alone. Statistical analysis was conducted by using an independent t-test, one-way ANOVA, $Scheff{\acute{e}}$ test, Pearson correlation coefficient and stepwise multiple regression analysis. Results: Mean scores of health literacy, diabetic knowledge and adherence of self-care were $4.41{\pm}3.54$ points out of a possible $12, 6.22{\pm}2.55$ points out of a possible $15, 58.56{\pm}17.28$ points out of a possible 112, respectively. Adherence of self-care showed a statistical association with health literacy (r=.26, p<.001) and diabetic knowledge (r=.30, p<.001). Statistically significant factors in the regression model were monthly income, diabetic knowledge and exercise. Conclusion: The level of self-care adherence in the elderly with diabetes living alone was relatively low. Diabetic knowledge was an important factor to improve the level of self-care adherence for the elderly with diabetes living alone.

개선된 Shrink-wrapping 알고리즘을 이용한 비조직 3차원 데이터로부터의 표면 재구성 (Surface Reconstruction from unorganized 3D Points by an improved Shrink-wrapping Algorithm)

  • 박은진;구본기;최영규
    • 정보처리학회논문지A
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    • 제14A권3호
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    • pp.133-140
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    • 2007
  • SWBF(shrink-wrapped boundary face) 알고리즘은 조직되지 않은 3차원 측정점으로부터 표면을 재구성하기 위해 최근에 제안된 방법이다. 본 논문에서는 SWBF 알고리즘의 표면 중복문제를 제기하고, 이를 해결하기 위한 개선된 표면 재구성 방법을 제안한다. 제안된 방법은 경계셀이 아닌 모든 셀들을 내부셀과 외부셀로 구분하고, 개선된 경계면의 정의를 이용해 초기메쉬에서 표면의 중복이 발생하지 않도록 하였다. 또한, 측정 방향에 따라 표면 샘플링의 조밀도가 차이가 나는 일반적인 3차원 스캐너로부터 추출된 데이터의 처리를 위해 셀 영상에서 2차원 연결성을 정의하여 사용하였다. 실험을 통해 제안된 방법이 SWBF 알고리즘의 표면중복문제를 극복하는데 매우 유용함을 알 수 있었다.

암 환자의 긍정적 가족관계가 외상 후 성장에 미치는 영향 - 영적민감성의 조절효과- (The effect of positive family relationship on post-traumatic growth in cancer patients - moderating effect of spiritual sensitivity -)

  • 김재엽;황호경;최유일;이현
    • 한국가족관계학회지
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    • 제22권4호
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    • pp.223-238
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    • 2018
  • Objectives: The purpose of this study was a) to examine the effect of positive family relationships on post-traumatic growth in cancer patients, and b) to verify the moderating effect of spiritual sensitivity. Methods: The subjects were cancer patients, both outpatients and inpatients selected from major hospitals specialized in cancer treatment using judgement sampling. A self-administered questionnaire survey was given to cancer patients, and a total of 208 cases were collected but only 201 cases were used in the final analysis due to seven unclear and inadequate questionnaires. We performed descriptive statistics to identify the prevalence for each variable, and the moderating effect was verified through multiple regression analysis. Results: The main results are as follows. First, the average post-traumatic growth of the subjects was 3.01 (0-5 points). Second, the positive family relations of the subjects were 2.58 (0-5 points) and the average of spiritual sensitivity was 2.93 (1-5 points). Third, positive family relationship of cancer patients was positively correlated to post-traumatic growth, and spiritual sensitivity was verified as a moderator to positive family relationship enhancing the post -traumatic growth. Conclusion: These findings imply the importance of post-traumatic growth in cancer patients as a key intervention point to overcome pain and frustration from cancer. We suggest to develop family therapy programs and services aimed at fostering positive family relationships and meeting the needs of spiritual sensitivity for cancer patients and their families. This study also provides ways to promote post-traumatic growth in social welfare facilities in medical institutions and religious foundations.

생태계교란 생물 미국가재(Procambarus clarkii)의 국내 서식과 분포 연구 (Distribution of Invasive Alien Species Red Swamp Crawfish (Procambarus clarkii) in Korea)

  • 박철우;김종욱;조윤정;김재구;이민지;김수환
    • 생태와환경
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    • 제53권4호
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    • pp.331-335
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    • 2020
  • 미국가재는 멕시코 북동부 및 미국 중남부가 원산지로, 전 세계에 유입되어 서식처 파괴와 토착종과의 경쟁 등 많은 문제를 야기하고 있다. 본 조사에서 영산강 6개 지점, 만경강 5개 지점, 섬진강 2개 지점 금강 1개 지점에서 확인되었으며, 주요 수계에서 정착 서식하는 것으로 나타났다. 완주군 서봉리와 함평군 모산리는 20개체 이상이 확인되어 비교적 큰 개체군을 형성하고 있을 것으로 추정된다. 높은 이동성과 환경적응력으로 보아 확인된 지점에서 타수계로의 유입 가능성이 매우 높을 것으로 생각되며, 이에 지속적인 확산 현황 파악과 생태계 피해 예방을 위한 지속적 제거 노력이 필요하다.

한국 성인의 근감소증 위험도 평가점수 모형 개발 (Developing the Sarcopenia Risk Assessment Model in Korean Adults)

  • 배은정;박일수
    • 한국학교ㆍ지역보건교육학회지
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    • 제23권4호
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    • pp.81-93
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    • 2022
  • Objectives: The purpose of this study was to develop a model for comprehensively evaluating the risk of sarcopenia in Korean adults and to generate the sarcopenia risk scorecard model based on the results. Methods: The participants of the study were 7,118 adults without sarcopenia in the first basic survey, and a longitudinal analysis was conducted using data from the 1st to 8th survey (2006-2020) of the Korean Longitudinal Study of Aging (KLoSA). The data were analyzed using Rao-Scott chi-square test and weighted Cox proportional hazards regression of complex sampling design. The sarcopenia risk scorecard model was developed by Cox proportional hazards regression using points to double the odds (PDO) method. Results: The findings show that the risk factors for sarcopenia in Korean adults were gender, age, marital status, socioeconomic status, body mass index (BMI), regular exercise, diabetes and arthritis diagnosis. In the scorecard results, the case of exposure to the highest risk level was 100 points. The highest score range were given in the order of age over 65, low BMI, and low socioeconomic status. Conclusions: The significance of this study is that the causal relationship between various factors and the occurrence of sarcopenia in Korean adults was identified. Also, the model developed in this study is expected to be useful in detecting participants with risk of sarcopenia in the community early and preventing and managing sarcopenia through appropriate health education.

평면곡선에 대한 Hausdorff 거리 계산의 가속화 기법에 대한 연구 (Efficient Hausdorff Distance Computation for Planar Curves)

  • 김용준;오영택;김명수
    • 한국CDE학회논문집
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    • 제15권2호
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    • pp.115-123
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    • 2010
  • We present an efficient algorithm for computing the Hausdorff distance between two planar curves. The algorithm is based on an efficient trimming technique that eliminates the curve domains that make no contribution to the final Hausdorff distance. The input curves are first approximated with biarcs within a given error bound in a pre-processing step. Using the biarc approximation, the distance map of an input curve is then approximated and stored into the graphics hardware depth-buffer by rendering the distance maps (represented as circular cones) of the biarcs. We repeat the same procedure for the other input curve. By sampling points on each input curve and reading the distance from the other curve (stored in the hardware depth-buffer), we can easily estimate a lower bound of the Hausdorff distance. Based on the lower bound, the algorithm eliminates redundant curve segments where the exact Hausdorff distance can never be obtained. Finally, we employ a multivariate equation solver to compute the Hausdorff distance efficiently using the remaining curve segments only.

단층대내(斷層帶內)의 면(面) 및 선구조(線構造)의 도식화(圖式化)를 위한 전산처리(電算處理) (Computational Treatment for Plotting of the Planar and the Linear Structures in Fault Zone)

  • 선우춘;이병주
    • 자원환경지질
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    • 제23권3호
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    • pp.359-366
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    • 1990
  • Field sampling requires statistical description to draw inferences from data. Field data, or linear structures, are commonly analyzed by the graphical presentations, such as streonets and rose diagrams. For this purpose the DROPOL program is developed to analyze the data more efficiently with personal computer. DROPOL program written in FORTRAN 77 plots the structural data in points, poles or great circle on equalarea (Schmidt net) or equal-angle (Wulff net) projection surface. It is also capable to project the data from upper or lower hemisphere of stereonet and to draw pole contour diagrams from the plotted data. The rose diagram, representing the frequency of the strike and dip angle, can also be drawn in general or smooth type using $5^{\circ}$ or $10^{\circ}$ degrees interval.

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스펙트럼차에 기초한 LSP 추출방법 (An LSP Extraction Method Based on the Spectral Difference)

  • 김홍국
    • 한국음향학회:학술대회논문집
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    • 한국음향학회 1993년도 학술논문발표회 논문집 제12권 1호
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    • pp.253-258
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    • 1993
  • In this paper, we propose a new method to extract the line spectrum pair (LSP) frequencies. When speech signal is analyzed by the autocorrelation method, the spectral difference in the logarithmic spectra of the model at steps p and p-1 oscillates. There are p-1 frequency points where the values of the spectral dfference take on either maximum or minimum between 0 and half sampling frequency. We show that these frequencies are excatly the LSP frequencies of order p-1, which can be found by searching the frequencies where the spectral difference reaches either maxima or minima. also, the LSP frequencies of order p can be obtained from this spectral difference. In this case, we derive the expression governing the pth order LSP frequencies. The efficient search for finding the LSP frequencies of order p can be done by proving the property that the LSP frequencies of order p and p-1 are interlaced with each other.

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대용량 필기체 문자 인식을 위한 비선형 형태 정규화 방법의 정량적 평가 (Quantitative Evaluation of Nonlinear Shape Normalization Methods for the Recognition of Large-Set Handwrittern Characters)

  • 이성환;박정선
    • 전자공학회논문지B
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    • 제30B권9호
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    • pp.84-93
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    • 1993
  • Recently, several nonlinear shape normalization methods have been proposed in order to compensate for the shape distortions in handwritten characters. In this paper, we review these nonlinear shape normalization methods from the two points of view : feature projection and feature density equalization. The former makes feature projection histogram by projecting a certain feature at each point of input image into horizontal-or vertical-axis and the latter equalizes the feature densities of input image by re-sampling the feature projection histogram. A systematic comparison of these methods has been made based on the following criteria: recognition rate, processing speed, computational complexity and measure of variation. Then, we present the result of quantitative evaluation of each method based on these criteria for a large variety of handwritten Hangul syllables.

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유전 알고리듬과 분산처리기법을 이용한 스파이럴 인덕터의 고속설계 기법 (Fast Algorithm for Design of Spiral Inductor using Genetic Algorithm with Distributed Computing)

  • 사기동;안창회
    • 전기학회논문지
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    • 제57권3호
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    • pp.446-452
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    • 2008
  • To design a spiral inductor a genetic algorithm is applied with fast computing technique. For the inductance extraction of the given geometry the fast multipole method is used, also the distributed computing technique using 10 personal computers is introduced for the massive computation of the genetic algorithm. A few important design parameters are used as genes for the optimization in the genetic algorithm. The target function is chosen as mean square error of the inductance at several sampling frequency points. A large-scaled inductor is fabricated and compared with the simulated data.