• 한국수학사학회지
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• 제18권4호
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• pp.17-28
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• 2005

본 논문은 수학에서 수학사와 수학철학이 가지는 기능과 역할을 소개하려는데 있다. 역사적인 예들을 통하여 수학사와 수학철학은 수학을 이해하고 평가하는 기능과 실제로 수학을 형성하는 역할을 함을 보인다

• International journal of advanced smart convergence
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• 제13권2호
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• pp.80-87
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• 2024

This paper focuses on improving accuracy in constrained computing settings by employing the ReLU (Rectified Linear Unit) activation function. The research conducted involves modifying parameters of the ReLU function and comparing performance in terms of accuracy and computational time. This paper specifically focuses on optimizing ReLU in the context of a Multilayer Perceptron (MLP) by determining the ideal values for features such as the dimensions of the linear layers and the learning rate (Ir). In order to optimize performance, the paper experiments with adjusting parameters like the size dimensions of linear layers and Ir values to induce the best performance outcomes. The experimental results show that using ReLU alone yielded the highest accuracy of 96.7% when the dimension sizes were 30 - 10 and the Ir value was 1. When combining ReLU with the Adam optimizer, the optimal model configuration had dimension sizes of 60 - 40 - 10, and an Ir value of 0.001, which resulted in the highest accuracy of 97.07%.

• Child Health Nursing Research
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• 제11권1호
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• pp.54-62
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• 2005

Purpose: This study was done to examine the relationship between sexual permissiveness, family function and parent-adolescent communication among adolescents. Method: A descriptive correlation approach was used and the participants were 956 male and female students. Data were collected by questionnaire survey using convenience sampling. The instruments were the Family APGAR Questionnaire by Smilkstein(1978), PAC by Olson and Barnes(1982), and the Premarital Sexual Permissiveness Questionnaire by Reiss(1967). Data were analyzed using the SPSS 10.0 program with descriptive statistics, Pearson correlation coefficients, t-test, and ANOVA. Results: Family function was significant according to school record, economic status, living arrangement of parent. Parent-Adolescent Communication was significant according to religion, economic status, having a boy/girl friend, and experience of sexual intercourse. Sexual permissiveness was significant for all except economic status. Correlation among the variables showed that parent-adolescent communication was negatively correlated to sexual permissiveness(r=-.127, p=.000) and positively to family function(r=.368, p=.000). Conclusion: The findings suggest that parent-adolescent communication and family function are associated with sexual permissiveness, and the findings of this study are expected to make a contribution to creating an ideal sexual culture for youth.

• 대한수학회보
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• 제47권3호
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• pp.633-643
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• 2010

In this paper, the concept of maximal ideals relative to a filter on posets is introduced and examined. An intrinsic characterization of distributive lattices is obtained. In addition, we also give a characterization of pseudo primes in semicontinuous lattices and a characterization of semicontinuous lattices. Functions of semicontinuous lattices which are order preserving and semicontinuous are studied. A new concept of semiarithmetic lattices is introduced and examined.

• 대한수학회지
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• 제31권4호
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• pp.619-628
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• 1994

The multiplicity theory initiated by C. Chevalley was the one with respect to ideals generated by a system of parameters of a local ring containing a field [3] and [4]. Samuel generalized the definition to primary ideals belonging the maximal ideal of a local ring which contains a field by a device which used the Hilbert characteristic function [9]. Furthermore Samuel defined multiplicity also in local rings which contain no field [10].

• 대한전자공학회논문지
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• 제25권8호
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• pp.867-873
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• 1988

The degradation due to channel distortion in a quadrature modulation system from the ideal constant values over the bandwidth of a direct sequence spread spectrum signal are considered. Through using series expansion for the channel gain and phase response, the degradation in the correlator output at the receiver is found as a function of the parameters involved , including phase error, delay error, linear gin variation, quadratic gain variation, and quadratic phase variation.

• Journal of information and communication convergence engineering
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• 제7권4호
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• pp.545-550
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• 2009

A method fully utilizing multiscale line filter responses is presented to estimate the point spread function(PSF) of a CT scanner and diameters of small tubular structures based on the PSF. The estimation problem is formulated as a least square fitting of a sequence of multiscale responses obtained at each medical axis point to the precomputed multiscale response curve for the ideal line model. The method was validated through phantom experiments and demonstrated through phantom experiments and demonstrated to accurately measure small-diameter structures which are significantly overestimated by conventional methods based on the full width half maximum(FWHM) and zero-crossing edge detection.

• Journal of applied mathematics & informatics
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• 제4권1호
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• pp.249-261
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• 1997

We find a necessary and sufficient condition for a $\kappa$-confi-guration $\mathbb{X}$ in $\mathbb{P}^2$ to be in generic position. We obtain the number and degrees of minimal generators of some Gorenstein ideals of codimension 3 and so obtain their minimal free resolution s of these ideals.

• 전기학회논문지
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• 제56권12호
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• pp.2173-2178
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• 2007

Dynamics of plasma sheath was analyzed using simple ion fluid model with poison equation. Incident ion current, energy, potential distribution and space charge density profile were calculated as a function of time. The effects of initial floating sheath on the evolution of biased sheath were compared with ideal matrix sheath. The effects of finite rising time of pulse bias voltage on the ion current and energy was studied. The influence of surface charging on the evolution of sheath was also investigated

• Journal of applied mathematics & informatics
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• 제29권1_2호
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• pp.443-450
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• 2011

In this paper, we construct a Gorenstein Artinian algebra R/J with non-unimodal Hilbert function h = (1, 13, 12, 13, 1) to investigate the algebraic structure of the ideal J in a polynomial ring R. For this purpose, we use a software system Macaulay 2, which is devoted to supporting research in algebraic geometry and commutative algebra.