• Journal of the Korean School Mathematics Society
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• v.8 no.3
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• pp.343-356
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• 2005

The purpose of this study is to search whether mathematical beliefs have changed when new social norms are formed in math classroom through research using survey papers about mathematical beliefs and math class video photographing. In addition, it would search for social norms of mathematical classroom which affects to students' mathematical beliefs by analyzing culture of mathematical classroom. The result was that the class focusing only general social norms wasn't enough to change students' mathematical beliefs. And as we have examined sociomathematical norms of math classroom through analyzing culture of mathematics classroom, it has affected students' mathematical beliefs.

• Bulletin of the Korean Mathematical Society
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• v.36 no.2
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• pp.259-272
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• 1999

In [6], Godefroy defined octahedral norms to give an isomorphic characterization of spaces containing $\ell_1$. Here we will show that such norms can be defined by using "average distances" as introduced in[1]. Also, we indicate some other properties of average distances : in particular, we give some estimates for their values in the product of two spaces, furnished with the max or the sum norm.

• Journal of applied mathematics & informatics
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• v.38 no.1_2
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• pp.99-112
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• 2020

The study is about the bounds of the spectral norms of r-circulant and geometric circulant matrices with the sequences called biperiodic Jacobsthal numbers. Then we give bounds for the spectral norms of Kronecker and Hadamard products of these r-circulant matrices and geometric circulant matrices. The eigenvalues and determinant of r-circulant matrices with the bi-periodic Jacobsthal numbers are obtained.

• Journal of the Korean housing association
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• v.14 no.2
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• pp.31-40
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• 2003

This study was intended to examine the effects of socioeconomic status on housing values, norms, and behaviors of young households. The purpose was accomplished using the Life Style Survey of 2001 in Ulsan, and the data from 370 households were analyzed. The importance of household income and current housing size which are used as a proxy for socioeconomic status in explaining housing values, norms, and behaviors were once again confirmed in this study, even if there were some other significant variables. This implies that housing values, norms, and behaviors tend to change according to the socioeconomic characteristics of the households under the conditions of controlling demographic ones.

• Journal of Distribution Research
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• v.1 no.1
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• pp.197-222
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• 1996

The objective of this study is to investigate the determinants of trust between the producer and the distributor, focusing on relational norms (mutuality, flexibility, and solidarity) and environmental munificence, in agricultural marketing channels. More specifically, followings are investigated in cucumber marketing channels ; (a) the effects of environmental munificence on relational norms, and (b) tile effects of relational norms on trust. The major findings of this study are as follows ; (1) The cucumber producers' perceived output sector munificience positively affected the mutuality and solidarity of the relational norms. (2) The mutuality and solidarity of the relational norms positively affected the trust. Therefore, the efficient marketing transaction system, mutual efforts for a fair regard between producers and middlemen, and the development of sound moral and trading custom are required in the Korean agricultural market. And also the active roles of government to develop the infrastructure of agricultural marketing and the proper roles of agricultural cooperatives to keep transaction activity fair should be clarified and proactively conducted.

• Journal of the Korean Mathematical Society
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• v.56 no.2
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• pp.523-537
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• 2019

We estimate the essential norms of Volterra-type integral operators $V_g$ and $I_g$, and multiplication operators $M_g$ with holomorphic symbols g on a large class of generalized Fock spaces on the complex plane ${\mathbb{C}}$. The weights defining these spaces are radial and subjected to a mild smoothness conditions. In addition, we assume that the weights decay faster than the classical Gaussian weight. Our main result estimates the essential norms of $V_g$ in terms of an asymptotic upper bound of a quantity involving the inducing symbol g and the weight function, while the essential norms of $M_g$ and $I_g$ are shown to be comparable to their operator norms. As a means to prove our main results, we first characterized the compact composition operators acting on the spaces which is interest of its own.

• Journal of applied mathematics & informatics
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• v.25 no.1_2
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• pp.85-107
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• 2007

In this paper, we develop a fairly large number of sets of global semiparametric sufficient efficiency conditions under various generalized (${\theta},{\eta},{\rho}$)-V-invexity assumptions for a multiobjective fractional programming problem involving arbitrary norms.

• Journal of the Korean School Mathematics Society
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• v.17 no.2
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• pp.207-234
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• 2014

There has been an increasing concern of how mathematical idea indicates and shares in a way to promote students' mathematical development. Such ideas highlighting need of the culture of mathematics classroom in mathematical education. The culture of mathematics classroom was constructed classroom social norms, sociomathematical norms, and classroom mathematical practice. This paper investigated how sociomathematical norms were constructed in two elementary mathematics classrooms by two different teachers.

• Research in Community and Public Health Nursing
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• v.32 no.1
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• pp.12-23
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• 2021

Purpose: This study explored how and why young and middle-aged adults disclose depressive feelings to others. In particular, we investigated the role of social norms to see whether using mobile instant messaging (MIM) could lower the perceived barriers of emotional disclosure. Furthermore, the motivations of emotional disclosure via MIM were compared between young and middle-aged adults. Methods: A total of 255 Koreans (128 middle-aged people, 127 young adults) participated in an online survey. Pearson's correlation coefficients, paired t-tests, SPSS PROCESS macro, and exploratory factor analysis were used to examine the relationships among the key variables. Results: The perceived social norms were found to be a significant deterrent in disclosing depressive feelings to others. However, there was a significant interaction effect between generations and perceived social norms. Although young adults with low social norm awareness were more likely to disclose depressive feelings via MIM, emotional disclosure among middle-aged adults increased with higher levels of perceived social norms. Also, different motivations were observed. Conclusion: The results confirmed the significant effect of social norms as well as generational differences when using MIM as a channel of emotional disclosure.

• Journal of Families and Better Life
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• v.11 no.1
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• pp.35-45
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• 1993

The purpose of this study is to investigate the changes of housing characteristics and the degree of attainment of housing norms. The major findings are as follows: 1) There are significant differences in changes of housing characteristics. A size of house and the number of room have been improved according to hosing experience and housing expects. Type of tenure has been improved according to housing experience and housing expects. Type of tenure has been improved gradually according to moving. The family with higher socio-economic status prefers apartments. Although about a half of household hopes to live in a high-rising apartments. more than 40 persentage of the household still hopes to live in single detached houses. As a result apartment are though not to satisfy their housing well-being 2) As socio-economic status is higher and family life cycle is longer the degree of their attainment of housing norms appear higher. The household attaining higher housing norms has the higher housing satisfaction but needs to move is lower The family attains housing norms as the following orders: type of tenure\longrightarrowtype of house\longrightarrowthe nmber of rooms\longrightarrowa size of house.