• Journal of applied mathematics & informatics
• /
• 제29권1_2호
• /
• 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.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2018년도 춘계학술대회
• /
• pp.140-140
• /
• 2018

• 한국식물생명공학회:학술대회논문집
• /
• 한국식물생명공학회 2005년도 추계학술대회 및 한일 식물생명공학 심포지엄
• /
• pp.185-185
• /
• 2005

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2018년도 춘계학술대회
• /
• pp.77-77
• /
• 2018

• Journal of applied mathematics & informatics
• /
• 제11권1_2호
• /
• 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
• /
• 제37권5호
• /
• 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.

• 한국의류학회지
• /
• 제22권7호
• /
• 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.

• 한국작물학회지
• /
• 제47권
• /
• 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.

• 한국잠사곤충학회지
• /
• 제25권1호
• /
• pp.21-26
• /
• 1983

全原一號 品種은 1920年代 後半에 全北 原蠶種製造所에서 選拔하였으며, 1970年代 中盤까지 湖南一部 地方에 栽培되였었다. 本 品種의 正確한 特性 究明을 위하여 1977年에 水原과 全州에 改良뽕을 對照品種으로 全原一號 品種을 植栽供試하고 1979年부터 1982年가지 4個年間 栽培試驗을 實施하여 究明된 特性은 다음과 같다. 1) 全原 1號는 白桑系에 屬하는 中生種이다. 2) 枝條는 展開性, 條數型으로 伸張力이 弱하다. 3) 枝條의 枯損長比率은 改良뽕보다 약간 높으나 큰차 없었으며, 뽕나무 오갈병저항성과 耐倒伏性은 改良뽕보다 弱하다. 4) 年間改量은 正葉量으로 10a當 1,474kg으로서 改良보다 14% 적었다.

• 대한수학회지
• /
• 제33권2호
• /
• 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.