• Title, Summary, Keyword: inclusion measure

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INEQUALITIES FOR CHORD POWER INTEGRALS

  • Xiong, Ge;Song, Xiaogang
    • Journal of the Korean Mathematical Society
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    • v.45 no.2
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    • pp.587-596
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    • 2008
  • For convex bodies, chord power integrals were introduced and studied in several papers (see [3], [6], [14], [15], etc.). The aim of this article is to study them further, that is, we establish the Brunn-Minkowski-type inequalities and get the upper bound for chord power integrals of convex bodies. Finally, we get the famous Zhang projection inequality as a corollary. Here, it is deserved to mention that we make use of a completely distinct method, that is using the theory of inclusion measure, to establish the inequality.

Computing Semantic Similarity between ECG-Information Concepts Based on an Entropy-Weighted Concept Lattice

  • Wang, Kai;Yang, Shu
    • Journal of Information Processing Systems
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    • v.16 no.1
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    • pp.184-200
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    • 2020
  • Similarity searching is a basic issue in information processing because of the large size of formal contexts and their complicated derivation operators. Recently, some researchers have focused on knowledge reduction methods by using granular computing. In this process, suitable information granules are vital to characterizing the quantities of attributes and objects. To address this problem, a novel approach to obtain an entropy-weighted concept lattice with inclusion degree and similarity distance (ECLisd) has been proposed. The approach aims to compute the combined weights by merging the inclusion degree and entropy degree between two concepts. In addition, another method is utilized to measure the hierarchical distance by considering the different degrees of importance of each attribute. Finally, the rationality of the ECLisd is validated via a comparative analysis.

Chaotic Evaluation of Slag Inclusion Welding Defect Time Series Signals Considering the Hyperspace (초공간을 고려한 슬래그 혼입 용접 결함 시계열 신호의 카오스성 평가)

  • Yi, Won;Yun, In-Sik
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.12
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    • pp.226-235
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    • 1998
  • This study proposes the analysis and evaluation of method of time series of ultrasonic signal using the chaotic feature extraction for ultrasonic pattern recognition. The features are extracted from time series data for analysis of weld defects quantitatively. For this purpose, analysis objectives in this study are fractal dimension, Lyapunov exponent, and strange attractor on hyperspace. The Lyapunov exponent is a measure of rate in which phase space diverges nearby trajectories. Chaotic trajectories have at least one positive Lyapunov exponent, and the fractal dimension appears as a metric space such as the phase space trajectory of a dynamical system. In experiment, fractal(correlation) dimensions and Lyapunov exponents show the mean value of 4.663, and 0.093 relatively in case of learning, while the mean value of 4.926, and 0.090 in case of testing in slag inclusion(weld defects) are shown. Therefore, the proposed chaotic feature extraction can be enhancement of precision rate for ultrasonic pattern recognition in defecting signals of weld zone, such as slag inclusion.

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The Influence of Likert Scale Format on Response Result, Validity, and Reliability of Scale -Using Scales Measuring Economic Shopping Orientation-

  • Kim, Sae-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.34 no.6
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    • pp.913-927
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    • 2010
  • This study investigates the influence of Likert scale formats such as the number of response categories and the inclusion of a mid-point from a methodological point of view using instruments that measure a fashionmarketing-related subject. Using a self-administered questionnaire, 201 respondents rated their economic clothing shopping orientation on three formats of scales that differed only in the number of response categories (ranging from 5 to 7) from February 8 to February 12, 2010. Descriptive statistics, Spearman's rank order correlation, t-test, exploratory factor analysis, confirmatory factor analysis, Pearson's correlation, and Cronbach's alpha were used in the analysis. The results are as follows. First, three scale formats were generally suitable for use due to validity and reliability. Second, the response results varied with the number of categories and the inclusion of a mid-point, although the differences were statistically insignificant (with only a few cases that differed). Third, construct validity was more secure in scales with fewer categories, whereas convergent and discriminant validity was generally good in all scale formats. Fourth, reliability coefficients were higher in scales with more categories. Fifth, the number of categories was of greater importance to instrument design than the inclusion of a mid-point. Implications for appropriate scale designs are suggested in this study.

Spray and Atomization Technologies in Pesticides Application: A Review

  • No, Soo-Young
    • Journal of ILASS-Korea
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    • v.6 no.4
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    • pp.1-13
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    • 2001
  • In the pesticides sprays, spray and atomization technologies to increase the deposition and reduce the drift are briefly reviewed. Further research is needed to deduce a measure of drift risk in sprays with different structures, velocity profiles. For flat fan nozzles, the data of breakup length and thickness of liquid sheet are essential to understand the atomization processes and develop the transport model to target. In the air-assisted spray technology to reduce drift, further works on the effect of application height on drift and air assistance on droplet size should be followed. In addition, methods for quantifying included air in the air inclusion techniques are required. A few researches on the droplet size of fallout can be found in the literature. A combined technology with electrostatic method into one of method for the reduction of drift may be an effective strategy for increasing deposition and reducing drift.

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A Study on the Initiation of Pitting Corrosion of Fe-17Cr Alloy Using Micro-Droplet Cell Technique (Micro-droplet cell을 이용한 Fe-17Cr 합금의 공식 발생에 대한 연구)

  • Kim, Jae-Jung;Lee, Jae-Bong
    • Korean Journal of Metals and Materials
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    • v.46 no.12
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    • pp.809-816
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    • 2008
  • The influences of various parameters such as inclusions, surface roughness, exposed areas and chloride ion concentrations on the initiation of pitting of Fe-17Cr alloy were investigated, using micro-droplet cell technique. Micro-droplet cell allows one to align the micro-electrode to the desired spot of the working electrode and measure directly local currents with the potentiodynamic polarization. Micro electrochemical tests were carried out at the inclusions after EDX analysis of inclusion. EDX analysis identified inclusions as Cr-oxides. It was found that some active inclusions among Cr-oxide inclusions acted as initiation sites for pitting corrosion. In addition, the rougher surface and the denser chloride ion concentration offered easier pit initiation sites, causing the more susceptible to pitting corrosion.

Assessment Tools of Sensory Processing for Preschool-Aged Children: A Systematic Review (학령전기 아동을 위한 감각처리 평가도구의 체계적 고찰)

  • Kim, Myung-Hee;Shin, Hyeon-Hui;Kim, Kyeong-Mi
    • The Journal of Korean Academy of Sensory Integration
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    • v.13 no.1
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    • pp.1-12
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    • 2015
  • Objective : The purpose of the study was to investigate the characteristics and psychometric properties of assessments which were developed to measure sensory processing functions of preschool-aged children. Method : Comprehensive search for assessments measuring sensory processing functions was administered by using multiple electronic databases, including PubMed, Cochrane, CINAHL and PsycINFO. The titles and abstracts from the retrieved papers were screened. Then assessment tools that met all of the inclusion criteria were selected. Results : Thirty-eight assessments were identified. There were eight assessment tools that met the pre-defined inclusion criteria. Sensory Processing Measure-Preschool (SPM-P) was verified to be the most reliable and valid assessment tool, whereas Sensory Experiences Questionnaire (SEQ), Sense & Self-Regulation Checklist (SSRC), and Sensory Processing Scale Assessment (SPSA) showed inadequate reliability and validity. Conclusion : Based on the results from this systematic review, it would be useful for clinicians and researchers to select assessment tools of sensory processing for preschool-aged children.

The political issue on women's unpaid work I : Imputing the Value of Household Work (가사노동의 정책과정 개발에 대한 연구 I :가사노동의 측정을 위한 제안)

  • 문숙재
    • Journal of the Korean Home Economics Association
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    • v.36 no.4
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    • pp.35-48
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    • 1998
  • The imputation of monetary value of women's contribution to the informal economy for inclusion in satellite accounts to the formal System of National Accounts has been attempted along many methods. This is bases on official laborforce statistics and time-use survey. In this statistical system, household work is not an economic activity(or productive labor). Also, the clssification of activities involved in household work is different from that of sampling survey relating evaluation. The measurement of women's unpaid work is one of the important tasks for the improvement of women's status and the establishment of a development policy. To measure unpaid work in the economic terms, we should take following measures; 1) develop satellite or other official accouts to measure unpaid work outside national accounts. 2) conduct a nation-wide time-use survey to measure the unpaid work. 3) develp a proper classificaition of activities for time-use statistics. 4) reexamine the minimum time criterion. 5) determine a proper method of valuing along the law system.

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Time delay estimation algorithm for measurement of muscle fiber conduction velocity (근섬유 전도 속도 측정을 위한 시지연 추정 알고리즘)

  • Jung, Jung-Gyun;Lee, Jin;Lee, Young-Seok;Kim, Deok-Young;Kim, Sung-Hwan
    • 제어로봇시스템학회:학술대회논문집
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    • pp.1635-1638
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    • 1997
  • A measurement of conduction veloctiy of the action potentials along the muscle fibres has been applied to various diagnosis. When we measure muscle fiber conduction velocity, it occurs that not only change of conduction velocity but alos inclusion of mipulse component by physiological and experimental reason. So, robuster time delay estimation algorithm than general methods[1] is needed to find correct time delay form these signals. In this paper we, propose new time delay estimation algorithms, robust in impulsive noise, by using characteristic of .alpha.-stable distribution whcih defines impulsive noise well. Then we apply proposed algorthms to measure muscle fiber conduction velocity and compare them with other studies.

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