• The Korean Journal of Malacology
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• v.4 no.1
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• pp.17-29
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• 1988

The study had been carried out three times, from April 1987 for the purpose of analysis on the community structure and the distribution patterns of the Molluscan shells at the intertidal zone of Cheju Island. 1) The Molluscan shells collected and identified at all studied sites were composed of 3 classes, 10 orders, 23 families and 42 species.2) In all studied sites, individual numbers according to species were Nodilittorina exigua, Monodonta neritoides, Lunella coronata coreensis, Heminerita japonica in order. On the other hand, the dominant species of the rocky sits were N. exigua, M. neritoides and the rocky and silty-sand sites was Batillaris multiformis.3) In the vertical zonation, in the supralitorial zone, N. exigua was dominant species and the wpper-tidal zone, N. exigua, H. japonica and B. Multiformis were dominant species, but B. multiformis was dominant in the rocky and silty sand sites. In the middle tidal zone, M. neritodes, H. japonica, L. coronata coreensis were dominant and in the lower tidal zond, M. neritodes, L. coronata coreensis, Liolophura japonica were dominant.4)In the analysis on community of Molluscan shells, Chagwi, Pyoson an dAewol sites were more diverse than other sites in the species diversity and environmental inhibits were also favorable.5) Community similarities among the studied sites based on the similarities values were divided into two groups according to the difference of the ground: Hagwi, Chongdal and Sehwa sites group and the others sites group.

• Journal of Fisheries and Marine Sciences Education
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• v.29 no.1
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• pp.257-269
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• 2017

The occurrence variations of decapods by season and depth off Oryuk Islets, Busan were investigated at seven stations in April and October 2009, July 2010 and January 2011. Decapods were collected by SCUBA diving at 5 m and 10 m depths. 46 species belonging to 18 families in 3 orders were identified. Pilumnus minutus, Pugettia intermedia, Pachycheles stevensii, and Paguristes japonicus were dominant species, comprising 73.0% of total decapods. P. minutus and P. intermedia were abundant in all seasons (except summer) while P. stevensii and P. japonicus were abundant in fall and summer. Dominant species were divided into three groups (resident species, seasonal species and temporary species) on the basis of their occurrence patterns. P. minutus and P. intermedia were resident species while P. stevensii, P. japonicus were temporary species. The species number, density and biomass of decapods were fluctuated by seasons. They were highest in fall and lowest in winter. This study implied that the variations of species number and density of decapods were significantly related with seasonal change of water temperature.

• Korean Journal of Child Studies
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• v.15 no.2
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• pp.3-19
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• 1994

The purpose of this study was to investigate adolescents' coping strategies to various stressors, and to examine factors that related to their coping strategies. The subjects of the study were 355 middle school and 398 high school students. Adolescents' coping strategy was examined with a revision of the Family Crisis Oriented Personal Scale (McCubbin, Olson, & Larson, 1982). Quality of life was measured by an 11-item scale selected from Quality of Life (Olson & Barnes, 1982) in the areas of family, friend, relationship with relatives, and health and community. Parent-adolescent communication was divided into two dimensions of open communication and problem communication, using Parent-Adolescent Communication(Barnes & Olson, 1982). A measure of the self-esteem of adolescents was obtained by using selected items from the Self-Esteem Inventory(Coopersmith, 1967) and Self-Esteem Scale (Rosenberg, 1965). Five types of coping strategies were found. These are "help from relatives/neighbors", "help from families", "self-help", "help from friends", and "help from religion". Hierarchical regression analyses were conducted to examine significant predictor variables for adolescents' coping strategies. Sex, age, quality of parent-adolescent communication, family cohesion and adaptability, religion, and self-esteem were found important in predicting the types of coping strategies by adolescents.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.53 no.5
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• pp.761-772
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• 2020

In order to study about species composition and community structure of fish in the coastal water off Boryeong were investigated from January 2018 to December 2019. A total of 10,863 individuals of 87 species of 44 families were collected. The dominant species were Liparis tanakai accounted for 19.8 percent of the total with Amblychaeturichthys hexanema and Collichthys niveatus accounted for 12.4 percent and 11.0 percent of the total number. A cluster analysis based on the Bray-Curtis similarity revealed that the fish community divided into two groups, According to season. The fish species that appeared summer and autumn were mainly migratory, while the fish species that appeared in spring and winter were mainly resident species. Fish caught by stow net had a high percentage of immature fish. It presented that coastal water off Boryeong is located an important spawning and nursery for fisheries resource.

• Journal of Families and Better Life
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• v.19 no.2
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• pp.31-46
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• 2001

child relationships and school life through the in-depths interview with victims who have been victimized by peers for more than two years. For the selection of subjects, we administered questionnaires at three different times throughout a year. At both Time 1(July in 1998) and Time 2(December in 1998), 354 2nd grade junior high school students(169 boys and 185 girls) completed two kinds of questionnaires. And at Time 3(July in 1999), the subjects responded the questionnaires once more. Then 10 victims who has been victimized through Time 1, 2, and 3 were selected and interviewed. The victims were victimized for more than two years. Boys were more overt victimized, whereas girls were more related victimized. The victims were divided into four types by perception and reaction of victimization: (i) Passive victims who were afraid of and shrink from victimization, (ii) Aggressive victims who perceived seriously and reacted inappropriate aggression, (iii) Simple-minded victims who did not perceived seriously and reacted unconcernedly, and (iv) Ignorant victims who did not perceived seriously and reacted ignorant. The victims had been punitive frequently by parents at home. Also, they had no friends and teachers who supported for them in school.

• Journal of Families and Better Life
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• v.24 no.3 s.81
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• pp.27-41
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• 2006

The purpose of this study is to investigate the general tendencies and casual relations of demographic variables, consumer alienation, materialism and impulse buying among college students. Three hundred and forty one undergraduate students in Daejeon were participated in this study. Factor analysis, Multiple regression and Path analysis were used as statistical analysis. The major findings are as follows: 1. Consumer alienation of college students was divided into 4 types such as Powerlessness, Meaningless, Normlessness, Cultural Estrangement. The overall level of consumer alienation was 3.36. Normlessness(M=3.70) was the highest, and the lowest was powerlessness(M=2.82). Consumer alienation was influenced by gender, age, subjective level of living. Specifically, the lower the age and the subjective level of living were the higher meaningless and powerlessness respectively. And cultural estrangement was higher in male than female. However, normlessness was not affected by demographic variables. 2. The level of materialism of college students was relatively high(M=3.71). The materialism was affected by gender, age, allowance adequacy. 3. The level of impulse buying was higher than middle point(M=3.29). The results of path analysis showed that gender, age, allowance, allowance adequacy, socio-economic status, subjective level of living, powerlessness, materialism influence on impulse buying direct and indirect.

• Journal of Families and Better Life
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• v.26 no.3
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• pp.79-99
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• 2008

Nowadays, social circumstances have changed rapidly due to the decreasing birthrate and increasing number of senior citizens. Therefore, it is necessary to investigate past research for presenting the direction of future research and for improvement of welfare for the elderly. For this study a total of 231 articles within four kinds of major home economics journals are used. The articles were published from 2000 to 2007. Specific research topics (subjects) are investigated for this study. Results from this study are as follows. Research topics are divided into the following fields: facilities for the elderly, family relationships in later life, quality of life, economical aspects of the elderly, physical and metal health, leisure, awareness and the attitudes about elderly people, clothing, death and welfare services for elders. According to this study, 'facilities for the elderly' and 'relationships in later life' are the most frequent topics of interest. Based on the results of this research and the governmental aging society plan, SEROMAZI PLAN 2010, the directions of future research about senior citizens and later life in our home economics major science field are presented.

• Korean Journal of Environment and Ecology
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• v.21 no.2
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• pp.176-185
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• 2007

This study investigated native Rubus coreanus community in Korea(Ulleung island and Jeju island excepted). The quadrates were located in the middle of the native Rubus coreanus habitats. As the result of the research, the patter of native habitats were found to be divided into mountain roadsides, second-transition rents, severely damaged rents in the mountain, strictly protected regions, and environmentally harsh regions. The research revealed 218 taxa in total, in which 71 families, 165 genera, 18 varieties,1 forma and 199 species were checked in the flora of the native Rubu coreanus habitats. In this flora, the perennial plants appeared in as much as 80.74% proportion and appearance-frequency of the compositae was highest, accounting for 7.80%.

• International Journal of High-Rise Buildings
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• v.9 no.1
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• pp.95-104
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• 2020

Recently, robotic technologies have significantly improved, bringing considerable enhancements in many sectors; the main objective of this paper is to figure out if these innovations have also involved the building industry. To achieve this purpose, it has been considered crucial to first reshape and clarify some concepts, incorporating a much more flexible understanding of the term "robot", as well as the formulation of its future potential. Subsequently, it has been carried out an analysis of the various advanced devices that are currently available to be employed in the construction processes; the review includes a thorough classification of construction robots, divided into 18 families reflecting their purpose of use, and a dissection based on the term used to define them. The attention has been focused on the most updated and recent robots and, in their absence, on the most advanced machines prevailing. This operation has been achieved taking into account the development history of construction robots, as well as the analyses and classifications previously conducted, reconsidering them according to the just mentioned reflections. Furthermore, an in-depth exploration of the exoskeletons, as well as on a sophisticated robot recently developed by Schindler Group has been executed.

• Journal of Korean Elementary Science Education
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• v.33 no.3
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• pp.524-535
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• 2014

The purpose of this study was to develop the creative hands-on activities using EM (effective microorganisms) that can enhance the environmental literacy of learners, and to examine the effect of its application. The program was composed of 10 sessions, including biological knowledge and ecosystem status of microorganisms, practical activities that stimulate the environmental behavior and emotion of elementary school students, and career design related to their aptitude and occupation in future. This program can also be connected to the domains of creative hands-on activities, that is, career activities, club activities, self-regulated activities and voluntary service activities. In this study, two classes of 3th grades of elementary school in Seoul were selected and divided into two groups. The experimental group to undergo the program of creative hands-on activities using EM showed higher environmental literacy than the control group. In the concrete, it is proven that this program contributed to the improvement of learners' environmental emotion, skill, and behavior. When interviewed with experimental group, we found that sustained EM hands-on activities were conducted in collaboration with their families, and they became more aware of the utilities of EM and could participate in the activities more interestingly. In conclusion, the creative hands-on activities program was very effective and helped elementary students to change their environmental literacy in positive ways.