• Communications of the Korean Mathematical Society
• /
• v.33 no.2
• /
• pp.619-630
• /
• 2018

In this paper, we obtain a (p, q)-extension of the Whittaker function $M_{k,{\mu}}(z)$ together with its integral representations, by using the extended confluent hypergeometric function of the first kind ${\Phi}_{p,q}(b;c;z)$ [recently extended by J. Choi]. Also, we give some of its main properties, namely the summation formula, a transformation formula, a Mellin transform, a differential formula and inequalities. In addition, our extension on Whittaker function finds interesting connection with the Laguerre polynomials.

• Journal of Fisheries and Marine Sciences Education
• /
• v.18 no.2
• /
• pp.122-136
• /
• 2006

The purpose of this study is to explore the features and features of causes of communicative deficits in high-functioning autistic children in order to intervene educational programs. When communicating with others, high-functioning autistic children have difficulties in the aspects of syntax and semantics, especially pragmatics. These causes of communicative deficits of high-functioning autistic children can be explained respectively by theory of mind, executive function, and central coherence theory. According to theory of mind, qualitative impairment of interaction and communication accounts for communicative deficits. Executive function argues that communicative deficits of high-functioning autistic children be caused by limited concern. Central coherence theory suggests that communicative deficits be caused by the inappropriate integration of cues. Considering these causes of communicative deficits in high-functioning autistic children, we proposed educational strategies order to intervene educational programs.

• The Pure and Applied Mathematics
• /
• v.21 no.4
• /
• pp.271-279
• /
• 2014

Let $T_l$ be a transformation on the interval [-1, 1] defined by Chebyshev polynomial of degree $l(l{\geq}2)$, i.e., $T_l(cos{\theta})=cos(l{\theta})$. In this paper, we consider $T_l$ as a measure preserving transformation on [-1, 1] with an invariant measure $\frac{1}{\sqrt[\pi]{1-x^2}}dx$. We show that If f(x) is a nonconstant step function with finite k-discontinuity points with k < l-1, then it satisfies the Central Limit Theorem. We also give an explicit method how to check whether it satisfies the Central Limit Theorem or not in the cases of general step functions with finite discontinuity points.

• Journal of Agricultural Extension & Community Development
• /
• v.30 no.2
• /
• pp.103-118
• /
• 2023

This study aims to develop the living SOC function index and classified classes using the GIS-based spatial analysis method by applying the "Central Place Theory" as basic data for classifying living areas necessary for establishing rural spatial strategies in Boryeong. Boryeong-si is classified as a southern living area in the northern living area, centering on Daecheon-dong, the first class, and it is analyzed that living services such as used car service procurement and education are needed, and the southern living area needs a mid- and high-vehicle service delivery system in Ungcheon-eup. It is believed that this study can provide important clues to the classification of central functional facilities suitable for rural centers, reinforcement of vulnerable functional facilities by living area, and provision of living services.

• Journal of the Korean Society of Tobacco Science
• /
• v.27 no.2
• /
• pp.163-170
• /
• 2005

A theoretical model for predicting the capability curve of cellulose acetate filter is derived. The pressure drop is expressed as a function of the filter dimensions, the tow fiber characteristics, the filter weight, the fluid flow rate, and a filter fiber factor. Where, the filter fiber factor is affected by the distribution of the tow fibers within the filter, the relative orientations of the tow fibers, and their cross-sectional shapes. The minimum and maximum fraction of solids in capability curves determined from experimental data. Also, the filter fiber factor is expressed as a function of the filter length, tow fiber length, and tow fiber diameter. Capability curves predicted by the suggested model in this work correspond well with capability curves by experimental data.

• Journal of Family Resource Management and Policy Review
• /
• v.13 no.3
• /
• pp.1-16
• /
• 2009

The purpose of this study were to establish the concrete function of Metro Healthy-Families-Center and to find out the function of evaluation for Healthy-Families-Center. For this study the data was collected from the 10 interviewees. The findings were: 1) the major functions of Metro Healthy-Families-Center are the connection between the Central and Basic Center of Healthy Families, support for the Basic Center. 2) the evaluation for Metro and Basic Center is referred as the function of Central Center of Healthy Families. 3) the evaluation-support function of Metro Healthy-Families Center is emphasized. To the further related studies the development of programs corresponding to the functions is suggested.

• Structural Engineering and Mechanics
• /
• v.25 no.4
• /
• pp.423-444
• /
• 2007

By using the incremental form of the endochronic theory of plasticity, a model of material function is proposed in this paper to investigate plastic behavior. By comparing the stress-strain hysteresis loop, the theory is shown to agree well with the experimental results, especially in the evolution of peak stress values of SAE 4340 steel loaded by cyclic loading with various amplitudes. Depending on the choice of material parameters, the present model can substantially result in six categories of material function, each of which can behave differently with respect to an identical deformation history. In addition, the present model of material function is shown to be capable of describing the behavior of erasure of memory of materials, as experimentally observed by Lamba and Sidebottom (1978).

• Journal of environmental and Sanitary engineering
• /
• v.20 no.4 s.58
• /
• pp.31-37
• /
• 2005

The objective of this study is to analyze and suggest the policy on devolution of environmental administrative function between central and local government in Korea. This study also research to make the prospect of power from central government to local government's officers by analyzing the characteristics and contents, standards of local devolution and the attitudes of central and local governments on its process from September 2001 to April 2003. The date collected from the more than 675 questionnairs of government officers included as the Ministry of Environment and local government. The date also collected from interview and field survey. The questionnaire had collected in two times between 2001 and 2003. The environmental administrative function has reallocated from central government to local government since 2001. The devolution focused on simple implemental services and institutional delegated services might result in the lack of initiative and locality of local governments. Therefore, devolution should be proceed towards reinforcing the decision-making capacity and financial and manpower of local government. This paper also showed the weakness on speciality and experience on local bureaucratic in Korean society. This study announced that local government's officer has appeared the negative impact on environmental regulation and the conflict between central and local government.

• Journal of the Korean Society for Industrial and Applied Mathematics
• /
• v.17 no.1
• /
• pp.29-45
• /
• 2013

Central schemes offer a simple and versatile approach for computing approximate solutions of nonlinear systems of hyperbolic conservation laws. However, there are large numerical dissipation in case of contact discontinuity. We study semi-discrete central upwind scheme by changing flux functions to reduce the numerical dissipation and we perform numerical computations for various problems in case of contact discontinuity.

• Proceedings of the KIEE Conference
• /
• 2004.11b
• /
• pp.211-213
• /
• 2004

실시간 데이터를 대상으로 하는 전력 계통응용 프로그램을 개발하기 위해서는 SCADA 시스템이 다루는 Point Data를 Device Level의 속성으로 해석할 수 있어야 한다. 본 논문에서는 이러한 관계를 나타낼 수 있는 Mapping 기법을 제안하고 실제 응용 프로그램에 적용한 사례를 소개하고자 한다.