• Proceedings of the Korea Contents Association Conference
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• 2005.05a
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• pp.295-299
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• 2005

The object of this study is the business form between the consumer and the enterprise having a rapid growth nowadays. We classified enterprises' characteristic factors in internet shopping mall into product's characteristic factors on shopping mall, characteristic factors of the system on shopping mall and characteristic factors of the interaction between customers and shopping mall in the internet shopping mall. And then we investigated how these classified characteristic factors on shopping mall could influence on customer loyalty.

• Journal of Educational Research in Mathematics
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• v.12 no.2
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• pp.213-228
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• 2002

We know that curriculum is, first of all, related to teaching materials, namely, contents. Therefore, when we think of mathematics curriculum, we must take account of characteristic of mathematics. Vygotsky has studied the development of scientific concepts and everyday concepts. According to Vygotsky, scientific concepts grow down through spontaneous concepts; spontaneous concepts grow upward through scientific concepts. And mathematics is a representative of subjects dealing with scientific or theoretical concept. Therefore, his study provides scientific basis for mathematics curriculum design. In this context, Davydov notes that everyday concepts are developed through empirical abstraction, while scientific concepts require a theoretical abstraction. And Davydov constructed the curriculum materials for the teaching of number concept. Davydov's curriculum is an example of reflecting Vygotsky' theoretical view and his view about the types of abstraction. In particular, it represents mathematical characteristic of a 'science' by introducing number concept through quantitative relationship and use of signs. In conclusion, stance mathematical concepts have scientific characteristic, mathematics curriculum reflects this characteristic.

• Journal of Digital Convergence
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• v.10 no.5
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• pp.143-154
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• 2012

In this study, Entrepreneurial Intentions of the factors influence the Entrepreneurial Performance and Entrepreneurial Characteristic also was Investigated. Entrepreneurial Characteristic of the each Dimension in the Process of Entrepreneurial Intentions and Entrepreneurial Performance on the Influence of the Mediation Effect was Carried out to Examine. The test results used in this Study Established Entrepreneurial Characteristic of Entrepreneurial Performance and Entrepreneurial Intentions to the Positive Effect was Found. also Verifying the results of the Mediating Effect of Entrepreneurial Performance and Entrepreneurial Performance the Mediation Effect was Verification. These Factors Result in the Entrepreneurial Performance and also in Sales and net profit of Entrepreneurial Intentions Influences. especially, Entrepreneurial Characteristic Specific Need for Achievement, Risk taking and Business Strategy of Entrepreneurial Intentions also the relationship between the Impact is Significant. For this Study K national Institute of Technology, K university, Daegu Y College, J Companies Surveyed Workers and the Findings Were Derived. Specifically, Entrepreneurial in terms of those who have no Experience in Entrepreneurial Characteristic, Entrepreneurial Performance, Entrepreneurial Intentions the Impact on the Relationship Between Entrepreneurial and Provide Suggestions to Determine.

• Communications of the Korean Mathematical Society
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• v.12 no.4
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• pp.829-839
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• 1997

We study the Betti numbers, the Bass numbers and the resolution of modules under the change of rings. For modules of finite homological dimension, we study the Euler characteristic of them.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.11
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• pp.5587-5594
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• 2012

Determination of the soil-water characteristic curve is one of the most important things to solve geotechnical engineering problems. Expecially, convenient and reliable method to measure the soil-water characteristic curve during drying and wetting cycles is required with lower labor input, more independence from operator experience, and shorter testing time than other available methods. Many measurement methods including the flow pump system have been developed to characterize the soil-water characteristic curve for the several decades. This study measured the soil-water characteristic curve during drying and wetting cycles using a suction control technique with the flow pump system. Two test materials were used for determination of the soil-water characteristic curve, and it is concluded that suction control technique is suitable for determination of the soil-water characteristic curve and characterization of the hydraulic hysteresis with varying test conditions. Especially, the suction control technique can reduce error of measurement and save time in measuring the soil-water characteristic curve due to automated system and high degree of precision.

• Journal of Korea Water Resources Association
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• v.43 no.4
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• pp.399-408
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• 2010

The sensitivity of Nash model parameters is analyzed about characteristic velocities considering geomorphological dispersion in the present study. And changing shape of IUH compared and analyzed as variation of characteristic velocities through numerical experiment. Application watersheds are selected 4 subwatersheds which are located at main stream of Bocheong basin. The mean and variance of hillslope and stream path length are estimated in each watershed with GIS. And Nash model parameters are estimated with moments of path lengths and characteristic velocities. The changing trend about IUH which is derived Nash model parameters are compared as variation of characteristic velocities. The Major results of this study are summarized as follows. The Nash model parameters sensitively present changes about hillslope characteristic velocity. And the effect of the peak discharge and shape of recession in IUH dominate with hillslope's characteristic velocity, the effect of the peak time and shape of ascension in IUH dominate with channel's characteristic velocity.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.11a
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• pp.692-692
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• 2007

• Korean Journal of Mathematics
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• v.9 no.1
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• pp.1-7
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• 2001

In this paper, we define and study Gauss sums over Galois rings of characteristic 4. In particular, we give the absolute value of Gauss sum over Galois rings of characteristic 4.

• Korean Journal of Mathematics
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• v.11 no.2
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• pp.161-167
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• 2003

The purpose of this paper is to study and characterize the notions of characteristic 0 and weakly almost periodicity in flows. In particular, we give sufficient conditions for the weakly almost periodic flow to be almost periodic.

• Communications of the Korean Mathematical Society
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• v.32 no.1
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• pp.107-118
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• 2017

In this paper we study CR-submanifolds of maximal CR-dimension by investigating extrinsic behaviors of integral curves of characteristic vector field on them. Also we consider the notion of ruled CR-submanifold of maximal CR-dimension which is a generalization of that of ruled real hypersurface and find some characterizations of ruled CR-submanifold of maximal CR-dimension concerning extrinsic shapes of integral curves of the characteristic vector field and those of CR-Frenet curves.