• Journal of Ecology and Environment
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• v.37 no.3
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• pp.123-129
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• 2014

Ant communities are well suited for monitoring changes in ecosystems. Although numerous studies have examined the responses of ant communities to environmental disturbance, relatively few long-term studies on ant communities have been undertaken in urban environments. We examined species richness in nine urban parks in Hiroshima, Japan, and compared the survey results with data collected at the same sites by using the same methods in 1999. In both surveys, total of 25 species was recorded: 23 species in 1999 and 20 species in 2012. Non-metric multidimensional scaling analysis revealed that the ant communities consisted of two distinct groups, which could in turn be characterized by three patterns of ant community changes in between the two groups. The first of these community change patterns was characterized by a shift within group 1, but the number of species remained constant (approx. 10 species). The second pattern was characterized by a shift within group 2, but the number of species remained low (approx. 4 species). The third pattern was characterized by a shift from group 1 to group 2 as the abundance of Linepithema humile (Mayr) increased over time. Unlike the first and second patterns, the number of ant species in communities of the third type decreased significantly. These findings suggest that L. humile has a marked effect on the species diversity of indigenous ant communities in urban environments.

• Korean journal of applied entomology
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• v.54 no.4
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• pp.327-333
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• 2015

In order to identify the post-fire changes of ant assemblages after a forest fire, ants were surveyed at three survey sites (artificial reforestation site, natural reforestation site, and unburned forest site) in a burned forest area for eight years from 2005 using pitfall traps. 24 species were collected, and Nylanderia flavipes was the most abundant. Ant species preferring forest habitats (e.g. Aphaenogaster japonica. Lasius spathepus, and Plagiolepis flavescens) more occurred at the unburned forest site and the natural reforestation site, whereas ant species preferring open habitat (e.g., Formica japonica, Camponotus japonicus, and Tetramorium caespitum) more occurred at the artificial reforestation site. Ordination analysis indicated that ant communities of the artificial reforestation site were more changed compared with those of the natural reforestation site after the fire. The communities of the natural reforestation site were restored to the pre-fire state in five to six years after fire, whereas those of the artificial forest site seemed to take about 25 years to restore.

• The Korean Journal of Community Living Science
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• v.22 no.3
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• pp.395-406
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• 2011

The purpose of this study was to identity the differences of creativity according to levels of attentional abilities in young children. The participants of this study were 204 5-year-old children from the kindergarten or daycare center in Busan. The tests was conducted by using ANT and TTCT for young children. The study used two independent t-tests to find out the differences of creativity between high and low young children of degrees of alertness, orientation and executive control. The results of the study are as follows; first, there was a significant difference in creativity, abstractness of titles, and elaboration between high and low young children of varying degrees of alertness. Second, there was not a significant difference in creativity between high and low young children of orientation. Third, there was a significant difference in creativity; fluency, originality, elaboration and resistance to premature closure between high and low young children of the executive control. Therefore, there was a close relation between attentional control abilities, especially the executive control and creativity of young children.

• Korean Journal of Environmental Biology
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• v.18 no.4
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• pp.411-424
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• 2000

In order to investigate the population structure and dynamics of halophilous springtails and ants at seashores in Korea, we made quantitative collection from three different sites having different vegetation and environment. The pH, salinity, and electric conductivity of the three sites were measured in order to find environmental factors influencing on their species composition and distribution. In view of the results so far obtained, the species composition and distribution of springtails seemed to depend not so much on pH and vegetation as on soil texture and salinity. On the other side, ant populations seemed to depend on vegetation in sand area and on inundation in both sand area and salt marshes. In all investigated sites, the species diversity in supra littoral zones was higher than in intertidal zones, and among intertidal zones of sand beach and salt marshes it was the highest at the upper zone of the sand beach.

• Korean Journal of Environment and Ecology
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• v.34 no.2
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• pp.115-120
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• 2020

This study investigated the dominant species and the population variation of the ant species, an indicator species of biodiversity, to obtain basic data on the changes of population according to the future climate change. The survey period was from June to September 2013, and we investigated the distribution of ants by square irradiation method (10m × 10m) using traps. The survey in each altitude identified a total of 14 species of 11 genera in 3 subfamilies and collected 15,466 individuals. We confirmed the distribution of 4,548 individuals of 13 species at low altitude (700m), and the dominant species was Aphaenogaster japonica (49.9%). At the middle altitude (900m), we collected 9,129 individuals of 8 species, and the dominant species was Pheidole fervida (57.7%). At high altitude (1,100m), we identified 1,789 individuals of 10 species, and Myrmica kotokui (43.3%) was the dominant species. It was confirmed that Aphaenogaster japonica, Nylanderia flavipes, and Pheidole fervida were widely distributed throughout the altitudes.

• Korean Journal of Child Studies
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• v.27 no.4
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• pp.55-64
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• 2006

The purpose of this study was to investigate the effects of bilingualism on children's selective attentional ability by comparing Korean-Chinese bilingual with Chinese monolinguals in China. The subjects were 71 children, 4 and 5 years of age, 38 of whom were bilingual while 33 were monolingual. Bilingual children spoke Korean at home but Chinese in the community and at preschool. The instrument used to measure children's selective attentional ability was DCCST (Dimensional Change Card Sorting Task) and ANT (Attentional Network Test). Results showed that bilingual children were more advanced than monolingual in selective attentional ability.

• Journal of Korean Society of Rural Planning
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• v.12 no.4 s.33
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• pp.33-42
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• 2006

Recently, Korean government has been initiating various schemes for reactivation of the marginal farmland use. However, although about ten years have passed from the introduction of the marginal farmland redevelopment projects in 1995, there have been very few research works on their systematic and objective appraisal. Therefore, this study checked the statutory concept and development schemes of the marginal farmland, firstly. Ant through case studies on 5 completed project sites and questionnaire/interview surveys on local government officers/private developers, problems and suggestions on project implementation were analysed. Finally, in consideration with analysed results and suggestions together, tentative project directions and reaction schemes on marginal farmland development were proposed.

• Ocean and Polar Research
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• v.23 no.4
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• pp.379-388
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• 2001

Ch1 a abundance, Ch1 a-specific productivity and phytoplankton growth rate in each size fraction (pico, $<2{\mu}m$; nano, $2-10{\mu}m$; micro, > $10{\mu}m$) in the waters around the South Shetland Islands (Ant-arctic Peninsula Area) were analysed. Although Ch1 a-specific productivity and growth rate were highest in micro-size fractions, ChI a abundance was highest in pico-size fractions. Selective removal of nano- and micro-size phytoplankton especially by krill and salp grazing, but not limitation of phytoplankton growth, seemed to be the major reason to explain this miss match between productivity and abundance of the phytoplankton community.

• Journal of International Academy of Physical Therapy Research
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• v.8 no.2
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• pp.1182-1189
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• 2017

The purpose of this study was conducted with senior women of ages 65 in Community Center to identify effective exercise methods for preventing falling accidents by enhancing balancing skills through aerobic and foam roller exercise programs. There were 24 subjects : 11 aerobics group and 13 foam roller group. 30 minute exercise programs were conducted against both groups 12 times 6 weeks. Various tests, including Time up and go test, Forward reach test, One-leg standing with eyes open/closed and Y-Balance were conducted prior to commencing the exercise program. Wilcoxon's Signed-ranks test was executed to analyze the changes in balance of the aerobic and foam roller exercise group prior to and after the experiment, and Mann-Whitney test was executed to compare the difference between the two groups. The Y-Balance(post. medial) show statistically significant differences in the amount of change before and after exercise between the two groups, except for Timed up and go test, Forward reach test, Y-Balance(ant.), and Y-Balance(post. lateral), which did not showed statistically significant difference (p<0.05). Foam roller exercises are effective methods to enhance the balancing skills in senior women to prevent falling accidents.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.47
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• pp.175-185
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• 2002

Rapeseed(Brassica napus L.) is an important oil crop as a vegetable oil, concentrated feed and industrial materials. The name "canola" was registered in 1979 by the Western Canadian Oilseed Crushers Association to describe "double-low" varieties. Double low indicates that the processed oil contains less than 2% erucic-acid and the meal less than 3mg/g of glucosinolates. Today annual worldwide production of rapeseed is approximately 35 million tons on 24 million hectares. China accounts for 33% of the world production and the European Economic Community for nearly 32%. Canola ranks 3rd in production among the world's oilseed crops following soybeans, sunflowers, peanuts and cottonseed. The recent advances in genomics and in gene function studies has allowed us to understand the detailed genetic basis of many complex traits, such as flowering time, height, and disease resistance. The manipulation of seed oil content via transgene insertion has been one of the earliest successful applications of modern biotechnology in agriculture. For example, the first transgenic crop with a modified seed composition to be approved for unrestricted commercial cultivation in the US was a lauric oil, rape-seed, grown in 1995. There were also some significant early successes, mostly notably the achievement of 40% to 60% lauric acid content in rapeseed oil, which normally accumulates little or no lauric acid. The name "$\textrm{Laurical}^{TM}$" was registered in 1995 by Calgene Inc. Nevertheless, attempts to achieve high levels of other novel fatty acids in seed oils have met with much less success and there have been several reports that the presence of novel fatty acids in transgenic plants can sometimes lead to the induction of catabolic pathways which break down the novel fatty acid, i.e. the plant recognizes the "strange" fatty acid and, far from tolerating it, may even actively eliminate it from the seed oil. It is likely that, in the future, transgenic oil crops and newly domesticated oil crops will both be developed in order to provide the increased amount and diversity of oils which will be required for both edible and industrial use. It is important that we recognize that both approaches have both positive and negative points. It will be a combination of these two strategies that is most likely to supply the increasing demands for plant oils in the 21st century and beyond.ant oils in the 21st century and beyond.