• 사회경제평론
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• 제31권3호
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• pp.307-346
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• 2018

스웨덴의 경제학자 군나르 뮈르달(Gunnar Myrdal)은 학문적 생애 전체에 걸쳐 사회과학에서 가치판단의 역할 문제와 씨름했다. 이 문제에 관한 그의 초기 입장은 사실관계에 대한 과학적 분석과 가치판단을 완전히 분리해야 한다는 것이었다. 그러나 나중에 입장을 완전히 바꾸어, 사회과학 연구의 모든 과정에 가치판단이 개입할 수밖에 없으므로 사회과학자는 자신의 연구의 배후에 있는 가치판단을 드러내야 한다고 주장했다. 가치판단의 내용들을 체계적이고 정합성 있게 정리해낸 것이 가치전제인데, 사회과학자는 이 가치전제를 미리 명시하고 이 가치전제에 입각하여 분석과 규범적 평가를 수행해야 한다는 것이다. 그리고 이 가치전제는 사회과학자 자신의 가치판단이 아니라 연구대상 사회의 주요 집단의 가치판단으로부터 도출해야 한다는 것이다. 본 논문에서는 이러한 후기 뮈르달의 주장이 난점에 봉착할 수밖에 없다는 점을 보이고자 했다. 즉 다양한 사회집단 중에서 특정 집단의 가치판단을 선택하는 과정에서, 그리고 그 집단의 가치판단으로부터 가치전제를 도출하고 재구성하는 과정에서 사회과학자 자신의 가치판단이 개입될 수밖에 없다는 것이다. 그리고 뮈르달이 이런 난점에 봉착하게 된 것은 그가 가치 문제에 관한 해거스트룀(Axel $H{\ddot{a}}gersr{\ddot{o}}m$)의 '정서주의(emotivism)' 입장을 수용한 데 기인한다고 해석했다. 그리고 뮈르달의 문제의식의 긍정적 측면을 살리면서도 뮈르달이 봉착한 난점을 피해갈 수 있는 방법론적 해결책을 제안했다.

• 호남수학학술지
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• 제32권2호
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• pp.217-226
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• 2010

Using the Bu$\c{s}$neag's model ([1, 2, 3]), the notion of pseudo-valuations (valuations) on a ${\mathbf{BCK/BCI}}$-algebra is introduced, and a pseudo-metric is induced by a pseudo-valuation on ${\mathbf{BCK/BCI}}$-algebras. Based on the notion of (pseudo) valuation, we show that the binary operation in ${\mathbf{BCK/BCI}}$-algebras is uniformly continuous.

• Korean Journal of Mathematics
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• 제27권1호
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• pp.131-140
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• 2019

In this paper we have introduced the concept of pseudo-metric which we induced from a pseudo-valuation on KU-algebras and investigated the relationship between pseudo-valuations and ideals of KU-algebras. Conditions for a real-valued function to be a pseudo-valuation on KU-algebras are provided.

• 한국환경과학회지
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• 제15권3호
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• pp.243-252
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• 2006

The emergy concept was used to valuate the contributions of a tidal flat ecosystem included in the fourth stage reclamation plan for the Youngsan River area to the Korean economy. Emergy contributions of the ecosystem were compared with those of economic valuations performed on the same ecosystem. The tidal flat ecosystem contributed 3.55 million EmW/ha annually. This, however, cannot be compared directly with those of the economic valuations because both methodologies approach the valuation of ecosystems in different perspectives. The emergy methodology is a donor-based valuation in which what goes into making a product or service is measured, while the economic valuation is a receiver-based approach in which human receivers determine the value of an ecosystem product or service. An emergy valuation was conducted for the three ecosystem functions included in the economic valuations to compare the results of both methodologies on the same basis. Fishery production and pollutants removal contributed 9.86 million EmW/ha/yr and 0.88 million EmW/ha/yr, respective1y. The conservation value of the tidal flat ecosystem was 3.55 million EmW/ha/yr. Overall, the emergy valuation that try to include works of both human and nature on the same basis resulted in higher economic contribution of the tidal flat ecosystem than that calculated by the economic methodologies in which only human works are measured based on the willingness-to-pay of people. This study showed that the emergy concept could provide an alternative tool for policy decision-making regarding utilization and conservation of ecosystems by approaching the ecosystem valuation from a different perspective than that of economic methodologies.

• Kyungpook Mathematical Journal
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• 제32권1호
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• pp.125-130
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• 1992

• 대한수학회지
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• 제54권4호
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• pp.1345-1356
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• 2017

For a given number field K, we show that the ranks of elliptic curves over K are uniformly finitely bounded if and only if the weak Mordell-Weil property holds in all (some) ultrapowers $^*K$ of K. We introduce the nonstandard weak Mordell-Weil property for $^*K$ considering each Mordell-Weil group as $^*{\mathbb{Z}}$-module, where $^*{\mathbb{Z}}$ is an ultrapower of ${\mathbb{Z}}$, and we show that the nonstandard weak Mordell-Weil property is equivalent to the weak Mordell-Weil property in $^*K$. In a saturated nonstandard number field, there is a nonstandard ring of integers $^*{\mathbb{Z}}$, which is definable. We can consider definable abelian groups as $^*{\mathbb{Z}}$-modules so that the nonstandard weak Mordell-Weil property is well-defined, and we conclude that the nonstandard weak Mordell-Weil property and the weak Mordell-Weil property are equivalent. We have valuations induced from prime numbers in nonstandard rational number fields, and using these valuations, we identify two nonstandard rational numbers.

• Asian Journal of Innovation and Policy
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• 제11권3호
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• pp.277-292
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• 2022

This study examines the implications on the valuations of privately held firms when stakes are acquired by venture capitalists in India. In addition, the effect of fund size and revenue multiple is considered as a determinant of firm value. The study is based on a sample of 1229 rounds of funding during the period 2007-2015. The data was obtained from Venture Intelligence. Three major observations emerged based on an OLS regression. Firstly, it is observed that the stake acquired by venture capitalists has a negative effect on firm value. It supports the belief that when a firm reaches its maximum valuation from the promoter's perspective, there is a tendency to liquidate additional stakes. Secondly, a positive association between the revenue multiple and valuation is recognized. Thirdly, the convex relationship (U-shaped) between the fund size and firm valuations as seen in the case of developed economies, appears to be non-existent in India.

• The Journal of Asian Finance, Economics and Business
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• 제9권1호
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• pp.1-11
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• 2022

The study incorporates model uncertainty into the private equity (PE) valuation model (SWY model) (Sorensen et al., 2014) to evaluate how model uncertainty distorts the leverage and valuations of PE funds. This study applies a continuous-time model to PE project valuation, modeling the LPs' goal as multiplier preferences provided by Anderson et al. (2003), and assuming that LPs' aversion to model uncertainty causes endogenous belief distortions with entropy as a measure of model discrepancies. Concerns regarding model uncertainty, according to the theoretical model, have an unclear effect on LPs' risk attitude and GPs' decision, which is based on the value of the PE asset. It also demonstrates that model uncertainty lowers the certainty-equivalent valuation of the LPs. Finally, we compare the outcomes of the Full-spanning risk model with the Non-spanned risk model, and they match the intuitive economic reasoning. The most important implication is that model uncertainty will have negative effects on the LPs' certainty-equivalent valuation but has ambiguous effects on the portfolio allocation choice of liquid wealth. Our works contribute to two literature streams. The first is the literature that models the PE funds. The second is the literature introduces model uncertainty into standard finance models.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제1권1호
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• pp.7-11
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• 1994

Classically, valuation theory is closely related to the theory of divisors and conversely. If D is a Dedekined ring and K is its quotient field, then we can clearly construct the theory of divisors on D (or K), and then we can induce all the valuations on K ([3]). In particular, if K is a number field and A is the ring of algebraic integers, then since Z is Dedekind, A is a Dedekind rign and K is the field of fractions of A.(omitted)

• Kyungpook Mathematical Journal
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• 제62권1호
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• pp.57-67
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• 2022

In the present study, we introduce a valuation of ternary semiring on an ordered abelian group. Motivated by the construction of valuation rings, we study some properties of ideals in ternary semiring arising in connection with the valuation map. We also explore ternary valuation semirings for a noncommuative ternary division semiring. We further consider the notion of convexity in a ternary semiring and how it is reflected in the valuation map.