• Title/Summary/Keyword: Direct/indirect methods

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Procedures for Detecting Multiple Outliers in Linear Regression Using R

  • Kwon, Soon-Sun;Lee, Gwi-Hyun;Park, Sung-Hyun
    • Proceedings of the Korean Statistical Society Conference
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    • 2005.11a
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    • pp.13-17
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    • 2005
  • In recent years, many people use R as a statistics system. R is frequently updated by many R project teams. We are interested in the method of multiple outlier detection and know that R is not supplied the method of multiple outlier detection. In this talk, we review these procedures for detecting multiple outliers and provide more efficient procedures combined with direct methods and indirect methods using R.

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An Indirect Method to Monitor Plasma Status in a Transformer Coupled Plasma

  • Yu, Dae-Ho;An, Seung-Gyu;Kim, Ji-Hun;Jang, Hong-Yeong
    • Proceedings of the Korean Vacuum Society Conference
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    • 2011.02a
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    • pp.216-216
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    • 2011
  • There have been various direct or indirect methods to measure the characteristics of plasma. Comparing to direct method like Langmuir probe method, indirect measurements which give information as some external parameters like current, voltage, or phase are easier to obtain. In this research, an indirect method to measure averaged plasma density in a transformer coupled plasma(TCP) has been proposed and evaluated. With a simple analytic model connecting electrical characteristics to plasma impedance, direct measurement via double Langmuir probe has been performed. This result may play a meaningful role to diagnose TCP or similar plasma sources

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The Effects of Parent-Adolescent Communication and Friendship Quality on Adolescent Happiness (부-자녀 및 모-자녀 의사소통과 친구관계의 질이 중·고등학생의 행복감에 미치는 영향)

  • Yun, Kibong;Doh, Hyun-Sim
    • Korean Journal of Child Studies
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    • v.38 no.2
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    • pp.149-164
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    • 2017
  • Objective: The purpose of the study was to examine the direct effects of parent-adolescent communication and its indirect effects through adolescent friendship quality on happiness among both middle and high school students. Methods: Participants in this study were 1,126 adolescents (667 middle school students and 459 high school students) in Seoul and Gyoung-gi Do. Data were collected through self-report questionnaires for adolescents, which included measures of parent-adolescent communication, friendship quality and happiness. Data were analyzed by t-tests, correlations, and SEM using SPSS 22.0 and Mplus 6.0. Results: For middle school students, father-adolescent communication had direct and indirect effects on happiness. However, mother-adolescent communication did not directly or indirectly affect adolescent happiness. Specifically, only father-adolescent communication had an significant indirect effect through friendship quality on adolescent happiness. For high school students, father-adolescent communication had direct effects on happiness, while mother-adolescent communication had significant indirect effects on adolescent happiness via friendship quality. Conclusion: This study underscores the importance of parent-adolescent communication and friendship quality in predicting adolescent happiness with differences in direct and indirect paths between middle and high school students. These findings emphasize the role of parent-adolescent communication and friendship quality in developing programs to improve the happiness of adolescents.

Indirect Anthropometry on Cast Model of Cleft Lip Nose: Comparison with Direct Anthropometry (구순열비 석고모형에서 간접인체계측법: 직접인체계측법과의 비교)

  • Han, Ki Hwan;Jeong, Hoi Joon;Jin, Hyun Seok;Kim, Jun Hyung;Son, Dae Gu
    • Archives of Plastic Surgery
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    • v.34 no.1
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    • pp.18-23
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    • 2007
  • Purpose: Anthropometry can be divided into two methods, direct anthropometry and indirect anthropometry. The most ideal and accurate method is a direct anthropometry. However, it is difficult to measure in the case of children because of poor cooperation, and it lacks re-productivity. Cast model has advantages of three dimensional featuring, inexpensive and easy fabrication. This study is conducted to find out an accuracy of indirect anthropometry on cast model by comparing it with direct anthropometry. Methods: Total 48 cleft lip nasal deformity patients (unilateral, 40; bilateral, 8) were included in this study. Cast models were made before surgery under general anesthesia with alginate impression material and model plaster. Eleven linear measurements among 7 landmarks were taken as direct anthropometry before surgery with Castroviejo spreading caliper. At the same time, indirect anthropometry on cast model was done at the same linear distances as well. Results: Of the total 11 linear measurements, both ala lengths, both columella lengths, nose width, projective distance between facial insertion points of the ala, projective distance between the alar base points, right nostril floor width, and columella width were statistically correlated between indirect anthropometry on cast model and direct anthropometry. However, the nasal tip protrusion and the left nostril floor width were not statistically correlated. Conclusion: Accuracy of indirect anthropometry on cast model can be influenced by cast model fabrication techniques and correct identification of landmarks. Nasal tip protrusion could be reduced by compression of the nasal tip in the process of cast model fabrication and nostril floor width can be varied by muscle relaxation of anesthetics and incorrect identification of subalare in cleft lip nasal deformity. If sufficient care is taken to make cast model and to define landmarks exactly, indirect anthropometry on cast model can be a reliable method as direct anthropometry.

A Study on the Ceneration of Simulated High-Resolution Satellite Images (고해상도 모의위성영상 제작에 관한 연구)

  • 윤영보;조우석;박종현;이종훈
    • Korean Journal of Remote Sensing
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    • v.18 no.6
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    • pp.327-336
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    • 2002
  • Ever since high resolution satellites were launched, high-resolution satellite images have been utilized in many areas. This paper proposed methods of generating simulated satellite image using DEM(Digital Elevation Model) and digital image such as aerial photograph. There are two methods proposed in the paper: one is Direct-Indirect method and the other Indirect-Indirect, method. It is assumed that satellite attitude is not changing and perspective center is moving in the direction of flight while image is captured. The proposed methods were implemented with aerial photograph, DEM data, arbitrary orbit parameters and attitude parameters of high resolution satellite image under generation. Furthermore, for the stereo viewing, different orientation parameters and perspective center were tested for generating simulated satellite image. In addition, the quality and accuracy of the simulated satellite image generated by the proposed methods were analyzed.

The Effects of Mother's Self-Efficacy and Parenting Behavior and Children's Achievement Motivation on Children's Self-Efficacy (어머니의 자기효능감과 양육행동 및 아동의 성취동기가 아동의 자기효능감에 미치는 영향)

  • Park, Hyun-Jung;Lee, Kyung-Nim
    • Korean Journal of Human Ecology
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    • v.14 no.4
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    • pp.547-559
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    • 2005
  • The purpose of this study was to explore the effects of mothers' self-efficacy, parenting behaviors, and children's achievement motivation on children's self-efficacy. Subjects were 591 fifth- and sixth-graders and their mothers in Busan. Statistics and methods used for data analysis were Cronbach's alpha, Pearson's correlation, Multiple Regression, and Path Analysis. Several major findings of this study were as follows: 1) Any difference was not found by sex in children's general and total self-efficacy. Girls' social efficacy, however, was higher than boys'. 2) Achievement motivation had a direct positive effect and was the first positive contribution factor to the self-efficacy of both sexes. 3) On boys' self-efficacy, mothers' own had an indirect positive effect through achievement motivation, and their parental role efficacy had a positive effect, direct or indirect, through their affective parenting behaviors and the boys' achievement motivation; also mothers' affective parenting behaviors had an indirect positive effect through achievement motivation, and their controlling parenting had a direct negative effect. 4) On girls' self-efficacy, mothers' own had a direct positive effect, and their parental role efficacy had an indirect positive effect through their affective and controlling parenting behaviors and the girls' achievement motivation; also mothers' affective parenting behaviors had a positive effect, direct or indirect, through achievement motivation, and the controlling parenting had a negative effect, direct or indirect.

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Remote Sensing Monitoring and Loss Estimated System of Flood Disaster based on GIS

  • Wenqiu, Wei
    • Proceedings of the KSRS Conference
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    • 2002.10a
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    • pp.507-515
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    • 2002
  • Remote Sensing Monitoring and Loss Estimated System of Flood Disaster based on GIS is an integrated system comprised flood disaster information receiving and collection, flood disaster simulation, and flood disaster estimation. When the system receives and collects remote sensing monitoring and conventional investigation information, the distributional features of flood disaster on space and time is obtained by means of image processing and information fusion. The economic loss of flood disaster can be classified into two pus: direct economic loss and indirect economic loss. The estimation of direct economic loss applies macroscopic economic analysis methods, i.e. applying Product (Industry and Agriculture Gross Product or Gross Domestic Product - GDP) or Unit Synthetic Economic Loss Index, direct economic loss can be estimated. Estimating indirect economic loss applies reduction coefficient methods with direct economic loss. The system can real-timely ascertains flood disaster and estimates flood Loss, so that the science basis fur decision-making of flood control and relieving disaster may be provided.

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SUBARU EXPLORATIONS OF EXO-SOLAR PLANETS AND DISKS

  • TAMURA MOTOHIDE
    • Journal of The Korean Astronomical Society
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    • v.38 no.2
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    • pp.319-324
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    • 2005
  • To date, more than 150 exo-solar planets have been observed by various methods such as spectroscopic, photometric, astrometric, gravitational lensing, pulsar timing methods. However, all these are indirect methods; they do not directly image the planets. Only free-floating planets or their 'ana-log' have been directly detected so far. Thus the next milestone is the direct imaging of any kinds of planetary mass objects orbiting around normal (young) stars, which might have been associated with protoplanetary disks, the sites of planet formation. I will describe some SUBARU efforts to detect self-luminous young giant planets as companions as well as direct imaging of the protoplanetary disks of ${\~}$100 AU size. The results of near-infrared coronagraphic imaging with adaptive optics are briefly presented on AB Aur, HD 142527, T Tau, and DH Tau. Our results demonstrate the importance of high-resolution (${\~}$0.1 arcsec) direct imaging over indirect observations such as modeling based on spectral energy distributions. The SUBARU observations are a prelude to ALMA from the morphological point of view.

Diagnostic Evaluation Methods in TMJ Balancing Medicine (턱관절균형의학의 기본 진단검사법)

  • Lee, Young-Jun;Yin, Chang Shik
    • Journal of TMJ Balancing Medicine
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    • v.3 no.1
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    • pp.27-30
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    • 2013
  • Diagnostic evaluation methods frequently adopted in Temporomandibular Balancing Medicine (TBM) are briefly reviewed as to their basic concepts and procedures. TBM diagnostic evaluation methods may be classified into direct and indirect ones. Indirect methods are to observe any change in the manifestations with regard to the (1) posture, (2) pain, (3) muscle strength, and (4) stretching. Direct methods are to evaluate through (1) cervical palpation test, (2) restricted cervical rotation test, and (3) lateral cervical tension test. These methods may provide clinicians valuable information on the current yinyang balance and potential therapeutic factors in relation with the temporomandibular joint, a meridian system, and the whole body.

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The Socioeconomic Cost of Diseases in Korea (질병의 사회.경제적 비용 추계)

  • Ko, Suk-Ja;Jung, Young-Ho
    • Journal of Preventive Medicine and Public Health
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    • v.39 no.6
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    • pp.499-504
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    • 2006
  • Objectives : The aim of the study was to estimate the annual socioeconomic cost of diseases in Korea. Methods : We estimate both the direct and indirect costs of diseases in Korea during 2003 using a prevalence-based approach. The direct cost estimates included medical expenditures, traffic costs and caregiver's cost, and the indirect costs, representing the loss of production, included lost workdays due to illness and lost earnings due to premature death, which were estimated based on the human capital theory. The cost estimates were reported at three different discount rates (0, 3 and 5%). Results : The cost of diseases in Korea during 2003 was 38.4 trillion won based on 0% discount rate. This estimate represents approximately 5.3% of GDP The direct and indirect costs were estimated to be 22.5 trillion (58.5% of total cost) and 15.9 trillion won (41.5%), respectively. It was also found that the cost for those aged $40\sim49$ accounted for the largest proportion (21.7%) in relation to age groups. The cost of diseases for males was 23.5% higher than that for females. For major diseases, the total socioeconomic costs were 16.0, 13.4, 11.3 and 11.19% for neoplasms, and diseases of the digestive, respiratory and circulatory systems, respectively. Conclusions : This study can be expected to provide valuable information for determining intervention and funding priorities, and for planning health policies.