• Korean Journal of Plant Taxonomy
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• v.39 no.2
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• pp.89-99
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• 2009

We used Maximum parsimony and Neighbor-joining to investigate phylogenetic relationship of the genus Thalictrum in Korea with 39 morphological characters. The plant materials were used for ingroup 21 taxa and outgroup 1 taxon including a Korean endemic plant. This study confirmed that Sect. Thalictrum and Sect. Camptonotum formed monophyletic group by 100% and 83% bootstrap values respectively, and Sect. Camptonotum appeared to be Sect. Thalictrum's sister group. Sect. Erythrandra and Sect. Physocarpum formed paraphyletic groups. Sect. Physocarpum except T. osmorhizoides appeared to be polytomy. Sect. Tripterium and Sect. Omalophysa formed an independent clade. The shape of stamen is the important character representing the phylogenetic pattern of the genus Thalictrum; the bat and filiform types might be derived from clavate type. The pollination patterns (entomophily, anemophily), and presence of calyx at flowering time may also be related to the evolution of the Thalictrum flowers.

• Journal of the Korean housing association
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• v.21 no.1
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• pp.11-21
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• 2010

The house of the China Korean ethnic group in the countryside, kitchen is one of the most important rooms, which works for cooking, warming, and storage. Besides, it has some complementary functions such as washing and showering. The spatial structure of the kitchen is divided into three types, 'jeongji', 'walkway' and 'independent' one. Those houses which are near Korea peninsula mainly belong to the 'jeongji' type; whereas those houses which are in the inland of Jilin, Heilongjiang and Liaoning Provinces mainly are 'walkway' and 'independent' types. The main constituents of the kitchen include pots and pans, water supply and sewerage, fuel and storage etc. The differences among these constituents lead to the geographic differences in the aspect of cooking method and dietary culture, and finally the different kitchen spatial characters are manifested.

• Journal of Plant Biotechnology
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• v.30 no.3
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• pp.227-232
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• 2003

Radiation technique has been used to develope mutant rice. Suwon 345 rice seeds were irradiated with 250 Gy gamma ray. Morphological characteristics of the variants in M$_{8}$ generation were observed and random amplified polymorphic DNA(RAPD) analysis was carried out. Plant height, panicle length, 1,000 grain weight and lodging were very different in mutants compared with donor cultivar. RAPD analysis showed that polymorphic bands were presented in several primers of the mutants. In comparison with original variety, variants were classified into four group through UPGMA analysis. A group has mutation trait in panicle length, B group in plant height and C group in 1,000 grain weight. Among mutants, no. 46 and 147 was ranked as salt tolerance and the malonaldehyde content of these mutants was more increased than that of original variety. Valuable mutants obtained will be useful for developing new cultivars and for studing gene function in molecular level.l.

• Journal of Plant Biology
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• v.35 no.3
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• pp.205-210
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• 1992

Size>; and sculpture pattern of pollen grains in seven species and two varieties of the genus Lilium in Korea were examined by LM and SEM, and their evolutionary trends were discussed. Lilium species in Korea can be divided into two groups based on pollen morphology: one is small reticulate group with small pollen grains and lumens, which includes L. concolor var. pulchellum and L. callosum; the other is large reticulate group with large pollen grains and lumens, which includes remaining taxa. It is thought that small reticulate group is more primitive than large reticulate group on the basis of tectum coverage. According to the above results and some morphological characters of salles and perianth segments, L. concolor var. pulchellum and L. callosum are very closely related, and they would be treated under the same subsection.ection.

• Hwankyungkyoyuk
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• v.23 no.4
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• pp.32-43
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• 2010

This study was performed to know about the conformity tendencies of adolescent and adult groups based on lectures of the expert on the topic 'the cicada'. Characters of each lecture were 'he pure natural science', 'positiveness', 'negativeness' and 'neutrality,' and then attitude changes on the cicadas were investigated with a questionnaire. Consequently, half of the adolescent and adult groups thought of the cicadas' sounds as 'noise' through mass communications respectively. They had a neutral attitude, neither positive nor negative, on cicadas' sounds in the beginning. Attitudes of the people on the cicada, however, were changed positively only with a pure natural science lecture. In this case, the adolescent group was more prevalented by the lecture than the adult group. In other words, the positive-based lecture affected them positively, while the negative-based lecture affected them negatively. The conformity tendencies of adolescent groups participating in the positive-based lecture were substantial. In conclusion, as we can see from the so-called Kohlberg's 'stages of moral development', conformity tendencies of attitudes towards cicadas' sounds were generally much more prevalent in the adolescent group, compared with the adult group, even though there are some differences in subcategories.

• Current Research on Agriculture and Life Sciences
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• v.7
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• pp.127-151
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• 1989

The ground beetles or carabids are essentially predaceous feeding on a wide variety of insects including forest pests, slugs and land snails containing those injurious to livestock or veterinary, thus many are predominantly beneficial and serve as natural enemies. In the present investigation, some morphometric multivariate analysis were done for 9 different populations in 5 subspecies of D. (C.) jankowskii, which are one of the most common ground beetles in Korea As the results, when the comparison was conducted between intraspecific groups regardless of subspecies in external morphological characters, the average group membership revealed 97.46% correct assignment For intersubspecific comparisons alone 96.3% were correctly classified. Between the groups of ssp. jankowskii an average of 100% individuals were classified in their known group. Thus the predict group membership was highly significant(P<0.001), exceeding so-called 'the 75% rule'. Whereas, the average group membership using the male genitalic characters represented less than the 75% assignment, except only in ssp. quelpartianus (85.6%). The population from Is. Chindo were described here as a new subspecies for qualitative as well as the resultant quantitative differences. Therefore, a total of 7 subspecies are represented in Korea. Among them, the nominate subspecies, ssp. jankowskii(sensu lato), revealed distinct intrasubspecific differences between different geographic populations. These differences can be as notable as intersubspecific variation which need substantial revision of the previous intuitional concepts on the infraspecific level.

• Journal of the Korean Society of Tobacco Science
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• v.26 no.2 s.52
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• pp.73-78
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• 2004

This study was conducted to find out the relationship among agronomic characteristics including midrib ratio in Burley tobacco(N.tabacum L.) Four cultrivars, Burley 21, KB108, KB111 and KB301, were grown at Suwon Experimental Station in 2001. Several agronomic characteristics of these cultivars were measured for the analysis of correlations among agronomic characteristics. Midrib ratio of KB301 was somewhat higher than those of the other cultivars, but there is no significant differences among cultivars at $5\%$ probability level. Among four stalk positions, midrib ratio of cutters was the highest. Midrib ratio was correlated positively with length of leaf at $1\%$ level and negatively with weight of lamina at $5\%$ level, respectively.

• Journal of the Korean Society of Costume
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• v.51 no.2
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• pp.27-42
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• 2001

The objectives of this study are to give a definition and to find out the background and the pursuits of Saenghwal Hanbok. Conclusions are described as follows : 1. Saenghwal Hanbok and Gaeryang Hanbok are used together at the same tome, but they are different the background and the pursuits. Gaeryang Hanbok was pursued practical aspects - activities, simplification, sanitation, courtesy, economy, and diversity. And then Saenghwal Hanbok was added the pursuits of Minjung's image, traditional image, modern esthetic. 2. The background of Saenghwal Hanbok is divided into two group. One is the Minjung Hanbok in University, and the other is the recreated Hanbok in mass fashion. The former was effected to youth culture, political quarrel of culture movement, anti-government group. The Latter was a tendency toward reviving the tradition. 3. The characters of Saenghwal Hanbok were a national tradition, a resistance. the image of poor Minjung, a revival of the tradition, and a diversity and negotiation of post-modernism.

• Communications of the Korean Mathematical Society
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• v.9 no.4
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• pp.773-782
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• 1994

Investigation of the number of representations as well as of projective representations of a finite group has been important object since the early of this century. The numbers are very related to the number of conjugacy classes of G, so that this gives some informations on finite groups and on group characters. A generally well-known fact is that the number of non-equivlaent irreducible representations, which we shall write as n.i.r. of G is less than or equal to the number of conjugacy classes of G, and the equality holds over an algebraically closed field of characteristic not dividing $\mid$G$\mid$. A remarkable result on the numbers due to Reynolds can be stated as follows.

• Journal of the Korean Mathematical Society
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• v.57 no.5
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• pp.1187-1237
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• 2020

Simply reducible groups are important in physics and chemistry, which contain some of the important groups in condensed matter physics and crystal symmetry. By studying the group structures and irreducible representations, we find some new examples of simply reducible groups, namely, dihedral groups, some point groups, some dicyclic groups, generalized quaternion groups, Heisenberg groups over prime field of characteristic 2, some Clifford groups, and some Coxeter groups. We give the precise decompositions of product of irreducible characters of dihedral groups, Heisenberg groups, and some Coxeter groups, giving the Clebsch-Gordan coefficients for these groups. To verify some of our results, we use the computer algebra systems GAP and SAGE to construct and get the character tables of some examples.