• 문화경제연구
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• 제20권1호
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• pp.3-20
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• 2017

본 연구는 'Buy-One Give-One' 비즈니스모델이 규모의 경제가 높은 상품일수록 이윤 달성의 가능성이 높음을 밝힘으로써, 추가 소비자에 따른 한계비용이 거의 발생하지 않아 규모의 경제 효과가 매우 높은 디지털 재화, 공연 등 문화콘텐츠 산업에 'Buy-One Give-One' 비즈니스모델이 수익성 향상을 위해 매우 적합함을 제안하고자 한다. 최근 문화콘텐츠 기업들이 수익성 달성의 한계를 극복하지 못하고 공공자금의 지원을 받을 수 있는 사회적기업으로의 전환을 모색하고 있는 추세로 볼 때 이 제안은 문화콘텐츠 기업에게 매우 의미가 있다. 예를 들어 신발 한 켤레를 판매할 때마다 다른 한 켤레를 개발도상국의 아이들에게 기부하는 TOMS의 'Buy-One Give-One' 비즈니스모델을 수리모형으로 분석한 후 이윤 달성가능성이 높아 지속가능성 역시 높음을 밝히고 있다. 구체적으로 소비자의 기부효용과 사회적 기업의 내적동기에 의한 혁신 혹은 규모의 경제 효과를 수리모형에 반영하여, 1) 독점시장이면서 내적동기에 의한 혁신을 적용한 경우, 2) 독점시장이면서 규모의 경제를 적용한 경우, 3) 일반기업과 TOMS 두 기업으로 구성된 과점시장의 경우, 4) 'Buy-One Give-One' 비즈니스모델을 채택하고 있는 TOMS형 기업 2개로 구성된 과점시장의 경우를 분석한다. TOMS의 'Buy-One Give-One' 비즈니스모델이 많은 관심을 받고 있음에도 불구하고 학문적으로는 특히 수익성과 관련하여서는 선행연구가 거의 이루어져 있지 않다는 점에서 본 연구의 학문적 가치가 있다. 그리고 문화예술 사회적기업의 'Buy-One Give-One' 비즈니스모델에 정부가 지원을 한다면 이는 문화예술에 대한 소외계층의 향유자 지원과 생산자 지원을 동시에 한다는 점에서 새로운 형태의 매력적인 정책이 될 수 있음을 정책적 시사점으로 언급하고자 한다.

• 충청수학회지
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• 제18권2호
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• pp.117-129
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• 2005

We give a generalization of bilateral mock theta functions of order eight and show that they are $F_q$-functions. We also give an integral representation for these functions. We give a relation between mock theta functions of the first set and bilateral mock theta functions of the second set.

• 건축사
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• 통권524호
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• pp.15-15
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• 2012

• Bulletin of the Korean Chemical Society
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• 제20권4호
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• pp.422-426
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• 1999

The Grignard reactions of bis(chloromethyl)dimethylsilane (1) with trimethylchlorosilane (2) in THF give both the intermolecular C-Si coupling and intramolecular C-C coupling products. At beginning stage, 1 reacts with Mg to give the mono-Grignard reagent ClCH2Me2SiCH2MgCl (1) which undergoes the C-Si coupling reaction to give MC2Si(CH2SiMe3)2 3, or C-C coupling to a mixture of formula Me3SiCH2(SiMe2CH2CH2)nR1 (n = 1, 2, 3, ..; 4a, R1I = H: 4b, R1 = SiMe3). In the reaction, two reaction pathways are involved: a) Ⅰ reacts with 2 to give Me3SiCH2SiMe2CH2Cl 6 which further reacts with Mg to afford a Me2SiCH2Mel-SiCH2MgCl (Ⅱ) or b) I cyclizes intramolecularly to a silacyclopropane intermediate A, which undergoes a ring-opening polymerization by the nucleophilic attack of the intermediates I or Ⅱ, followed by the termination reaction with H2O and 2, to give 4a and 4b, respectively. As the mole ratio of 2/1 increased from 2 to 16 folds, the formation of product 3 increased from 16% to 47% while the formation of polymeric products 4 was reduced from 60% to 40%. The intermolecular C-Si coupling reaction of the pathway a becomes more favorable than the intramolecular C-C coupling reaction of the pathways b at the higher mole ratio of 2/1.

• 대한수학회보
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• 제34권3호
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• pp.421-436
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• 1997

In this paper we first give a simple proof of the analytic characterization theorems of the operator symbols by using the characterization theorem for white noise functionals. We next give a criterion for the convergence of operators on white noise functionals in terms of their symbols and then use this result to give a proof for the Fock expansion theorem of operators on white noise functionals.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1995년도 봄 학술발표회 논문집
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• pp.355-359
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• 1995

In this paper, the possibility of interferometric shows very good linearity to the strain. Fiber optic sensors have various merits for health monitoring systems. They are very small in diamerter. So, they don't give any disturbance in strength to the structures, Optical fiber sensors are innert to the electro-magnetic field. Therefore, fiber optic sensors give us a good solution to the electro-magnetic field. Therefore, fiber optic sensors give us a good solution to the maintainance systems of the structures, which are exposed to the electric fields, such as bridges, dams and buildings.

• 대한수학회보
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• 제50권4호
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• pp.1243-1259
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• 2013

In this paper, we study the root system of rank 2 hyperbolic Kac-Moody algebras. We give some sufficient conditions for the existence of imaginary roots of square length $-2k(k{\in}\mathbb{Z}_{>0}$. We also give several relations between the integral points on the hyperbola $\mathfrak{h}$ to show that the value of the symmetric bilinear form of any two integral points depends only on the number of integral points between them. We also give some generalizations of Binet formula and Catalan's identity.

• 대한수학회논문집
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• 제38권2호
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• pp.589-598
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• 2023

Magnetic curves are the trajectories of charged particals which are influenced by magnetic fields and they satisfy the Lorentz equation. It is important to find relationships between magnetic curves and other special curves. This paper is a study of magnetic curves and this kind of relationships. We give the relationship between β-magnetic curves and Mannheim, Bertrand, involute-evolute curves and we give some geometric properties about them. Then, we study this subject for γ-magnetic curves. Finally, we give an evaluation of what we did.

• 제어로봇시스템학회논문지
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• 제9권11호
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• pp.861-867
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• 2003

We propose a sliding surface design method for linear systems with mismatched uncertainties in the state space model. In terms of LMIs, we derive a necessary and sufficient condition for the existence of a linear sliding surface such that the reduced-order equivalent sliding mode dynamics restricted to the linear sliding surface is not only stable but completely invariant to mismatched uncertainties. We give an explicit formula of all such linear switching surfaces in terms of solution matrices to the LMI existence condition. We also give a switching feedback control law, together with a design algorithm. Additionally, we give some hints for designing linear switching surfaces guaranteeing pole clustering constraints or linear quadratic performance bound constraints. Finally, we give a design example in order to show the effectiveness of the proposed methodology.

• 제어로봇시스템학회논문지
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• 제9권8호
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• pp.616-622
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• 2003

This paper deals with the problem of estimating the asymptotic stability region(ASR) of uncertain variable structure systems with bounded controllers. Using linear matrix inequalities(LMIs) we estimate the ASR and show the exponential stability of the closed-loop control system in the estimated ASR. We give a simple LMI-based algorithm to get estimates of the ASR. We also give a synthesis algorithm to design a switching surface which will make the estimated ASR big. Finally, we give numerical examples in order to show that our method can give better results than the previous ones for a certain class of uncertain variable structure systems with bounded controllers.