• Journal of applied mathematics & informatics
• /
• v.29 no.1_2
• /
• pp.135-143
• /
• 2011

As a zero set of some multivariate splines, the piecewise algebraic variety is a kind of generalization of the classical algebraic variety. This paper presents an algorithm for isolating real roots of the zero-dimensional piecewise algebraic variety which is based on interval evaluation and the interval zeros of univariate interval polynomials in Bernstein form. An example is provided to show the proposed algorithm is effective.

• Proceedings of the Korean Society of Crop Science Conference
• /
• 2018.04a
• /
• pp.140-140
• /
• 2018

• Proceedings of the Korean Society of Plant Biotechnology Conference
• /
• 2005.11a
• /
• pp.185-185
• /
• 2005

• Proceedings of the Korean Society of Crop Science Conference
• /
• 2018.04a
• /
• pp.77-77
• /
• 2018

• Journal of applied mathematics & informatics
• /
• v.11 no.1_2
• /
• pp.437-444
• /
• 2003

A toric variety is defined by a certain collection of cones. Especially a toric Fano variety is obtained from a special nonsingular fan. In this paper, we define the f-vectors of toric Fano varieties as the numbers of faces of the corresponding fans, and investigate the f-vectors of some toric Fano varieties.

• East Asian mathematical journal
• /
• v.37 no.5
• /
• pp.585-590
• /
• 2021

This paper consider the Jacobian variety of a hyperelliptic curve over a finite field with the formal structure of the mixed type. We present the Newton polygon of the characteristic polynomial of the Frobenius endomorphism of the Jacobian variety. It gives an useful tool for finding the local decomposition of the Jacobian variety into isotypic components.

• Journal of the Korean Society of Clothing and Textiles
• /
• v.22 no.7
• /
• pp.901-910
• /
• 1998

The purposes of this study were 1) to verify the theoretical model of the influential factors of brand variety seeking tendency in clothing products by identifying the relationships among optimum stimulation level, fashion leadership, fashion innovativeness, brand variety seeking attitudes and brand variety seeking behavior and 2) to identify the relationships among research variables according to clothing items(suits, jeans, casual jackets, T-shirts, panties, stocking) and the level of clothing involvement. The data was collected from 457 female college students living in Seoul and suburban areas, and was analyzed by frequency, one-way ANOVA, SNK test, multiple regression and path analyses. The results of this study were as follows: 1) There were significant effects of optimum stimulation level and fashion leadership on fashion innovativeness, significant effects of optimum stimulation level, fashion leadership and fashion innovativeness on brand variety seeking attitudes, and significant effects of brand variety seeking attitudes on brand variety seeking behavior 2) There were significant relationships among the research variables in case of suits and jeans. The relationships between variables were differed according to clothing items and the level of clothing involvement.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.47
• /
• pp.200-215
• /
• 2002

There are some international standards and organization controling the quality characteristics of varieties and seeds such as UPOV, OECD, ISTA, AOSA. The National List system to check variety performance such as quality characteristics of plant varieties and seeds was established by each countries. The UPOV (International Union for the Protection of New varieties of Plant) regulates the requirement of plant variety protection that is distinctness (D), uniformity (U), stability (S) (here in after called DUS), Novelty and Denomination, and some quality characteristics are used to examine the requirement of plant variety protection by each crops. OECD (Organization for Economic Cooperation Development) seed scheme regulates the seed certification for seed trade between countries. ISTA (International Seed Testing Association) and AOSA(Association for Official Seed Analyst) regulates the seed analysis standard and methods. Most of the countries in Europe has the National List system, which check the value for cultivation and use(VCU), that is to say, variety performance such as yield, quality and stress to environment. All the seeds should be enlisted in the National List before sell the seed in their country. All the quality characteristics checked variety performance are for instance, amylose and amylopectin content in rice, molting quality, $\beta$-glucan, protein in barley, protein and sugar content in soybean, sugar and amylopectin content in corn etc. Conditions for the protection of new variety of plant are DUS. Quality characteristics may be the important characteristics and used to check DUS in crop by crop. It is very important to develop a new characteristics and establish standard method fur examine the VCU and DUS test for each crop.

• Journal of Sericultural and Entomological Science
• /
• v.25 no.1
• /
• pp.21-26
• /
• 1983

The mulberry variety, Jeonweon No. 1, has been cultivated in some parts of Ho-Nam District since the variety was selected at the Jeonbuk Provincial Silkworm Egg Production Station in the latter half of 1920s. However, the characteristics of the ariety have not been reported. Therefore, the cultivation experiment on the variety was carried out to investigate the characteristics of the variety at Jeonju and Suweon for four years from 1979 to 1982. 1. The mulberry variety, Jeonweon No. 1, belongs to the Morus alba L. and the sprouting stage is medium. 2. The branch growth of the variety was rather slow, however the number of branches was more and the posture of branches opened wide. 3. The rate of cold injury of shoot tips was a little high, but resistance to disease and the lodging of branches was weaker, compared with the Gaeryangbbong variety. 4. The annual yield of leaves of the variety per 10a was 1,474kg, 14% less than that of the Gaeryangbbong variety.

• Journal of the Korean Mathematical Society
• /
• v.33 no.2
• /
• pp.439-453
• /
• 1996

In R. McKenzie[12], it is shown that the cardinality of the lattice variety is $2^\aleph_0$ and K. Baker[1] contains the stronger result that M, the variety of all modular lattices, has $2^\aleph_0$ subvarieties. It follows that there exists a variety of modular lattices that is not finitely based. In fact, K. Baker[2] gave an example of such a variety. And it was proved by K. Baker [2] and B. Jonsson [8] that join of two finitely based lattice varieties is not always finitely based. K. Baker[2] gave an explicit example of case of nonmodular lattice variety. Then it is proposed whether the join of two finitely based varieties if finitely based under certain conditions. The answer to the question is not affirmative.