• Title/Summary/Keyword: function concept

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A Study on the Implementation of Global SCM(Supply Chain Management) Model using Electronic Commerce Infrastructure (전자상거래 인프라를 활용한 글로벌 SCM(Supply Chain Management) 모델 구현에 관한 연구)

  • ;;Ishiguro Eiji
    • The Journal of Society for e-Business Studies
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    • v.7 no.3
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    • pp.121-137
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    • 2002
  • SCM(Supply Chain Management) have been introduced in many companies for integrated management and improvement of business process. Recently, as internet and e-business concept are spread globally, the SCM concept is expanded from one internal company process to inter-company process, it makes a Global SCM concept. In this paper, we discuss the implementation of the Global SCM concept using e-business infrastructure, and propose SCM portal models. Four types of the SCM portal model are discussed, which are forecasting information sharing model, e-Marketplace-typed model, collaboration model and logistics information sharing model. The major concept of the SCM portal is to share information of supply chain process, it provide merits of scale to company. The result of this paper can be summarized as follows : First, the information sharing is very useful in the Global SCM. Second, the e-business infrastructure, especially e-Marketplace can be usefully used for implementation of SCM portal. Third, the M2M(Market to Market) function of e-Marketplace is a major function for implementing SCM portal.

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Development of Link Cost Function using Neural Network Concept in Sensor Network

  • Lim, Yu-Jin;Kang, Sang-Gil
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.5 no.1
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    • pp.141-156
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    • 2011
  • In this paper we develop a link cost function for data delivery in sensor network. Usually most conventional methods determine the optimal coefficients in the cost function without considering the surrounding environment of the node such as the wireless propagation environment or the topological environment. Due to this reason, there are limitations to improve the quality of data delivery such as data delivery ratio and delay of data delivery. To solve this problem, we derive a new cost function using the concept of Partially Connected Neural Network (PCNN) which is modeled according to the input types whether inputs are correlated or uncorrelated. The correlated inputs are connected to the hidden layer of the PCNN in a coupled fashion but the uncoupled inputs are in an uncoupled fashion. We also propose the training technique for finding an optimal weight vector in the link cost function. The link cost function is trained to the direction that the packet transmission success ratio of each node maximizes. In the experimental section, we show that our method outperforms other conventional methods in terms of the quality of data delivery and the energy efficiency.

Geographical Metacognition in the Reading Maps Inquiry Activity (중학생의 '지도 읽기' 탐구활동에서 나타나는 지리적 메타인지)

  • Kang, Chang-Sook
    • Journal of the Korean association of regional geographers
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    • v.11 no.2
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    • pp.263-277
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    • 2005
  • Since the 1980's, metacognition has been one of the core subjects in the studies on teaching-learning. There have been significant considerations about the metacognition in the reaching-learning become increasingly important in relation with learner's thinking. Though, metacognition has now become important concept used in learning process, there have not been sufficient researches in geographic education. The purpose of this parer is to define metacognition concept in geograpbic education. First, the concept of metacognition in geograpbic education, alike in the other education, can be classified as metacognitive knowledge and metacognitive function. Metacognitive knowledge can be categorized as knowledge about self, task, and strategy. Metacognitive function can be categorized as function about monitoring, evaluating and controling. Next, based on geographical metacognition concept, this paper is researched the characteristics of geographical metacognition in the students' reading maps inquiry activity.

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Using computer software as an instructional tool for enhancing relational understanding of function concept : three case studies (관계적 이해를 위한 수업 도구로서의 소프트웨어 활용에 관한 사례 연구 - 고등학교 1학년 함수 단원을 중심으로 -)

  • 최윤녕;권오남;황혜정
    • School Mathematics
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    • v.1 no.2
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    • pp.637-660
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    • 1999
  • Although ‘to understand mathematics’ is an important educational purpose, most student do not have a relational understanding of the basic concept of mathematics but have a instrumental understanding. This paper will investigate the possibility of using computers for enhancing relational understanding. In the ‘Qualitative case study’, three students who are in the first grade at E-High school took part in 7 activities during four weeks, and were later interviewed and engaged in informal discussion and were observed. This is the result of this study. 1. The three students were passive participants in mathematics problem solving situation at school. Therefore, student B just applied formulas which she had memorized, and student C would forgot the formulas occasionally. These common students needed to participate actively in doing mathematics. 2. The activities utilized two software healing with connection between graphs and function, giving the students the opportunity to plan, practice, and test by themselves. As a result, they understood the mathematical formulas and rules more deeply through their own trial and error, and then they gained thinking abilities necessary for doing mathematics. In addition, the activities boosted their confidence. 3. The understanding type of students was slightly different. Student A who received a high score, understood the most relationally, but student B who received a very high score, understood instrumentally and so couldn't app1y her knowledge to solving problems related to function concept. Student C who received a middle score lacked knowledge of mathematics but thought more creatively. The result is that students need an opportunity to think rotationally regardless of score. Therefore, this study concludes that using computer software will provide a positive effect for relational understanding in loaming function concept.

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An Exploratory Study on Home Concept through Verbal Expression of Middleclass Apartment Residents (언어적 표현을 통해 본 주거의 개념에 대한 탐구적 연구 - 중산층 아파트 거주주부를 대상으로 -)

  • 이연숙
    • Journal of the Korean housing association
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    • v.1 no.1
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    • pp.49-64
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    • 1990
  • Studies on housing concept currently activated by environmental psychology are in its early stage of developement. The trends can be characterized as case oriented, phenomenological, and exploratory. The purpose of this research was to explore empirically the housing concept from residents living in multi family housing complex through their verbal expressions. Subjects were 63 housewives of middle class households in Junggae area. Interview technique with open questions about housing concept and images was used. The responses were analyzed using content analysis in which episode was the analysis unit. Relaxation appeared the most important aspect of housing concept This seemed to imply the need for escaping from the modern city life with too much stimulus or stress. Answers on specific images considered desirable to keep and continue from past traditional housing to future housing showed their strong need for natural green environment such as garden and park. This supported the concept of relaxation as a major function of modern housing and showed a specific alternative mean to satisfy the relaxation concept.

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Chaotic Phenomena in Addiction Model for Digital Leisure

  • Bae, Youngchul
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.13 no.4
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    • pp.291-297
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    • 2013
  • Chaotic dynamics have been studied by many researchers in the fields of biology, physics, and engineering. Interest in chaos is also expanding to the social sciences such as politics, economics, and others, including the prediction of societal events. The concept of leisure has developed from a passive concept correlated with relaxation, entertainment, and ideology formation into a positive concept that assumes a more active role. As information and communications technology develops, digital leisure activity is expected to continue spreading. This expansion of digital leisure function correctly, as well as. Traditional leisure activity functions correctly more, whereas digital leisure activity is predicted to function incorrectly more often. In this paper, we propose a mathematical addiction model of digital leisure that deals with its dysfunctions such as addiction to digital leisure, including computer games, internet search, internet chatting, and social media. Herein, to solve addiction to digital leisure, we propose a model derived from a nicotine addiction.

Buckling Loads of Tapered Columns due to Dynamic Concept (동적개념에 의한 변단면 기둥의 좌굴하중)

  • 이병구;우정안
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.34 no.4
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    • pp.97-105
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    • 1992
  • The main purpose of this paper is to present the buckling loads of tapered columns due to dynamic concept. The ordinary differential equation governing the bucking loads for tapered columns is derived on the basis of dynamic concept. Three kinds of cross sectional shape are considered in the governing equation. The Improved Euler method and Determinant Search method are used to perform the integration of the differential equation and to determine the buckling loads, respectively. The hinged-hinged, hinged-clamped, clamped-clamped and free-clamped end constraints are applied in numerical examples. The buckling loads are reported as the function of section ratio, and the effects of cross-sectional shapes are investigated. The buckling load equation, which are fitted by numerical data, are proposed as a function of section ratio. It is expected that these equations can be utilized in structural engineering field.

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CRITERIA FOR A NEW CPNTEPT OF STABILITY

  • Lakshmikanthan, V.
    • Journal of the Korean Mathematical Society
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    • v.37 no.5
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    • pp.657-664
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    • 2000
  • A new concept of stability that includes Lyapunov and orbital stabilities and leads to concepts in between them is discussed in terms of a given topology of the function space. The criteria for such new concepts to hold are investigted employing suitably Lyapunov-like functions and the comparison principle.

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