• The Korean Journal of Ecology
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• 제11권4호
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• pp.213-225
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• 1988

The plant communities of the eastern ridge in Mt. Cheonma, Central Korea, Quercus mongolica, Q mongolica-Acer pseudo-sieboldianum, and Q. mongolica-Rhododendron schlippenbachii communities in the northern slope and Q. variabilis and Q. cutissima communities in the southern slope were detected by Zurich-Montpellier method. The undergrowth of Q mongolica community in the northern slope was dominated by Ainsliaea acerifolia, Carex siderosticta, Astilbe chinensis var. davidii, Heloniopsis orientalis, Pseudostellaria palibiniana, ranging 3.3 to 2.2 in dominance-sociability, while the those of Q variabilis and Q acutissima in the southern slope were dominated by Spodiopogon cotulifer, Artemisia keiskeana, Carex humilis, Atractylodes japonica, Lysimachia clethroides and Disporum smilacinum with similar degree in dominance-sociability to that of Q mongolica community. The two communities were considered as regenerating forest after severe disturbance judging by their age structure. The relationship between Shannon's diversity index (H') and Simpson's dominance index (i) was in reciprocal proportion in both two communities. The Q. mongolica and Q. variabilis communities were showed 13 and 12 m respectively. Seasonal changes of undergrowth coverage in the two communities were seemed to be affected especially with soil moisture among environmental factors such as temperature, light intensity, relative humidity and organic matter.

• 한국잡초학회지
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• 제4권2호
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• pp.135-142
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• 1984

간척지(干拓地)의 개답년차(開沓年次) 진전(進展)에 따른 합리적(合理的) 잡초방제안(雜草防除案)을 구명(究明)하기 위한 기초자료(基礎資料)를 얻을 목적(目的)으로 계화도간척지(界火島干拓地) 지표분석(指標分析)을 하였다. 결과(結果)는 다음과 같이 요약(要約)할 수 있었다. 1. 조사지(調査地)의 토양염분온도(土壤鹽分濃度)는 대부분(大部分) 0.2% 이하(以下)로, pH는 5.5~6.5의 범위(範圍)로 변동(變動)되어 있었다. 2. 조사지(調査地)의 발생초종(發生草種)은 17종(種)으로서 매자기가 우점(優占)하고 있었으나 숙답화(熟畓化)와 함께 물달개비 쇠털골 알방동산이 등의 출현(出現)이 증가(增加)하는 경향(傾向)이었다. 3. 염온도(鹽溫度)가 낮아지고 pH가 5.5~6.5 범위(範圍)로 가까워질수록 발생초종수(發生草種數), 발생본수(發生本數), Biomass, 종다양도(種多樣度), 균재도(均在度), Sociability index가 커지는 반면에 군락특이도(群落特異度)는 작아지는 경향(傾向)이 있다. 4. 숙답화(熟沓化)가 진전(進展)될수록 온도잡초(溫度雜草), 다년생사초과(多年生莎草科), 근경횡주형(根 莖橫走型)의 잡초종(雜草種)이 줄고 일년생광엽잡초(一年生廣葉雜草)로서 풍수전파형(風水傳播型) 단립형(單立型)의 잡초종(雜草種)이 늘어가는 경향(傾向)이었다. 5. 숙답화(熟畓化)에 따른 잡초종(雜草種)의 천이(遷移) 다양화(多樣化) 다량화(多量化)가 예상되며 이에 대한 식생수준(植生水準) 및 유입전파(流入傳播)의 예방 대책이 요구(要求)될 것으로 판단(判斷)되었다.

• 대한가정학회지
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• 제39권2호
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• pp.131-146
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• 2001

The main purpose of this study, based on implicit personality theory and attribution theory, was to examine whether there exist the physical attractiveness stereotype, "what is beautiful is good," in the present Korea, and if exist, what is the content of it. The index of the physical attractiveness of this study was the facial attractiveness judged by 30 female university students. The appropriateness of clothing was manipulated by 4 types of clothing perceived appropriate for two assumed situations by female university students. Three female faces having high, medium, and low attractiveness were simulated with the same body dressed four types of clothing using CAD system, and a total of 12 stimulus persons were created. A total of 524 male and female(262 of male, 262 of female) university students from 3 universities in Kwangju, Korea were participated as subjects in this study. The design for the experiment was a 3$\times$4$\times$2 randomaized factorial, with three levels of facial attractiveness (high, medium, low), and four types attire(formal-masculine, formal-feminine, casual-masculine, casual-feminine), two kinds of context (job interview, dating) in which perceptions were occurred. The data were analysed using factor analysis, MANOVA, t-test and Duncan test. The results were as follows: 1. The facial attractiveness exerted significant positive effects on the evaluation of sociability, adjustment, and potency of her in both of two assumed situations (p<.001, respectively). 2. The appropriateness of stimulus person′s clothing had significant positive erect on the evaluation of sociability of stimulus person in dating context(p<.001). 3. The gender of subjects did not influenced the trait evaluations in both of two assumed situations.

• 한국환경복원기술학회지
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• 제11권2호
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• pp.55-65
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• 2008

This study was surveyed to analyze vegetation structure of mountainous wetlands in Chung-ju city and around area from September to November, 2006. 6 sites of total 15 potential mountainous wetlands were discriminated throughout field survey. By classification system of mountainous wetlands presented in manual of forest wetlands research, types of wetlands were classified into slant and a flat. Many sites were covered with land plants as Pueraria thunbergiana and so on. To understand vegetation structure of mountainous wetlands, Height, DBH (diameter at breast height), DI (Dominance Index), Sociability and Constancy were surveyed and Based on this result, a projection chart was drawn. As results, Salix koreensis in tree layer and Persicaria thunbergii and Impatiens textori in herb layer were surveyed as broadly distributed species. This study is mainly focused on vegetation condition of mountainous wetlands. But, it will be needed studying on classification system of mountainous wetland type and functional assessment for conservation or management of wetlands.

• 한국환경복원기술학회지
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• 제13권1호
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• pp.1-13
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• 2010

This study was accomplished to identify and analyze vegetation structure of Mountainous Wetlands in Dan-yang and around area, and surveyed from September to November, 2006. 6 sites of total 16 potential Mountainous Wetlands by GIS based wetland forecasting system (Korea National Arboretum, 2006) were identified as wetlands throughout field survey by the indicators such as hydrology, soil and vegetation. By classification system of Korea National Arboretum (2006), types of wetlands were classified into 3 slope-types and 3 flat-types. To understand vegetation structure of wetlands, height, DBH (diameter at breast height), DI (Dominance Index), sociability and constancy were surveyed and the projection diagram and charts ware drawn. As results, Salix koreensis in woody plant layer and Persicaria thunbergiiin and Juncus effusus var. decipiens in herb layer were surveyed as broadly distributed species. The wetlands of Dan-yang around area were similar to those of Chung-ju around area, but the species of plants and hydrology conditions were different. This study is mainly focused on vegetation condition of Mountainous Wetlands. But, further studies on functional assessment for management and restoration of wetlands were necessary.

• Journal of Korean Neurosurgical Society
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• 제66권5호
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• pp.511-524
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• 2023

Objective : This animal model aimed to compare the rat group that received brain irradiation and did not receive additional treatment (only saline) and the rat group that underwent brain irradiation and received Granulocyte colony stimulating factor (G-CSF) treatment. In addition, the effects of G-CSF on brain functions were examined by magnetic resonance (MR) imaging and histopathologically. Methods : This study used 24 female Wistar albino rats. Drug administration (saline or G-CSF) was started at the beginning of the study and continued for 15 days after whole-brain radiotherapy (WBRT). WBRT was given on day 7 of the start of the study. At the end of 15 days, the behavioral tests, including the three-chamber sociability test, open field test, and passive avoidance learning test, were done. After the behavioral test, the animals performed the MR spectroscopy procedure. At the end of the study, cervical dislocation was applied to all animals. Results : G-CSF treatment positively affected the results of the three-chamber sociability test, open-space test and passive avoidance learning test, cornu Ammonis (CA) 1, CA3, and Purkinje neuron counts, and the brain levels of brain-derived neurotrophic factor and postsynaptic density protein-95. However, G-CSF treatment reduced the glial fibrillary acidic protein immunostaining index and brain levels of malondialdehyde, tumor necrosis factor-alpha, nuclear factor kappa-B, and lactate. In addition, on MR spectroscopy, G-CSF had a reversible effect on brain lactate levels. Conclusion : In this first designed brain irradiation animal model, which evaluated G-CSF effects, we observed that G-CSF had reparative, neuroprotective and anti-neurodegenerative effects and had increased neurotrophic factor expression, neuronal counts, and morphology changes. In addition, G-CSF had a proven lactate-lowering effect in MR spectroscopy and brain materials.

• 한국간호교육학회지
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• 제20권1호
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• pp.118-128
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• 2014

Purpose: The purpose of this study was to investigate perceived stressor, the characteristics of personality and stress responses of college students and to compare their gender differences. Method: This study was cross-sectional survey and participants were 146 college students. Data was collected by Perceived Daily Life Stressor Scale of college students, Lim's Character Style Inventory, Vulnerability of Personality, and Stress Response Index, demographic questionnaire from May to September, 2012 in two cities. Results: Friend relationship stressor(p=.024) and professor relationship stressor(p=.032) among daily life stressors of female students were significantly higher than male students. Fatigue(p=.009), anger(p=.046), somatization(p<.001) and total stress response(p=.049) of female students were significantly higher than male student. Challenge(p=.034) of LCSI of female students was significantly higher than male student and stability(p=.018) of male students was significantly higher than female students. Regression model of stress response in male college students was significant(F=35.18, p<.001) and influencing factors were vulnerability of personality and challenge($R^2$=.544). Regression model of stress response in female college students was significant(F=39.38, p<.001) and influencing factors were vulnerability of personality, perceived stress type, and sociability($R^2$=.612). Conclusion: These findings need to be reflected to develop stress management programs and mental health promotion programs for college students.

• 한국컴퓨터정보학회논문지
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• 제27권2호
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• pp.145-151
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• 2022

본 연구는 현대를 살아가는 사람들이 생애주기별로 받는 스트레스 해소와 사회성 증진을 돕는 소셜미디어 플랫폼에 대해 알아보고자 하였다. 연구방법은 생애주기별 스트레스 특성과 사회성 그리고 소셜미디어에 대해 문헌적 연구를 하였다. 결과 현대를 살아가는 사람들은 생애주기별로 청소년기 중년기 노년기 등 다양한 스트레스 상황에 놓여 있으며, 특히 우리나라의 스트레스 지수는 점점 높아 지고 있다. 그 스트레스를 해결하기 위한 대처 방안으로 인터넷 기반의 소셜미디어 플랫폼을 활용하여 다양한 정보제공 및 접근이 필요하다고 보았으며, 복잡하고 다양한 개인 성향들과 개인주의적 활동에 각각의 성향과 욕구에 발맞춰 성향별 플랫폼 개발과 접근성이 용이하도록 해야 할 것이며, 관련 연구가 지속적으로 이뤄져야 한다고 제언한다.

• 한국보육학회지
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• 제18권1호
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• pp.103-123
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• 2018

본 연구는 영아의 인지능력 및 의사소통능력에 영향을 미치는 영아기질, 영아-교사상호작용, 모의 양육스트레스 간의 구조적 관계를 밝히는데 그 목적이 있었다. 연구대상은 S시에 거주하는 만 2세 영아 249명으로 평균월령은 30.21개월이었다. 'K-ASQ', '영아의 기질 평정도구', '부모 스트레스 척도 축소판, '영아교사 상호작용 평가도구'를 사용하여 연구자료를 수집하였으며 수집된 자료는 Pearson 적률 상관계수와 구조방정식 모형 분석을 통해 검증하였다. 연구결과 첫째, 영아의 인지 및 의사소통능력과 사회성 기질, 영아-교사 상호작용간의 정적인 상관이 나타났으며, 영아의 인지 및 의사소통 능력과 정서성 기질, 모의 양육스트레스 간의 부적 상관이 나타났다. 둘째 영아의 인지 및 의사소통 능력에 발달을 미치는 관련변인들의 구조적 관계를 살펴본 결과, 사회성 기질은 모의 양육스트레스에 직접적으로 영향을 주지만 모의 양육스트레스를 매개하여 인지능력에 영향을 주기보다는 주로 직접적인 경로로 인지능력에 영향을 미치는 것으로 나타났다. 영아의 정서성 기질은 모의 양육스트레스를 매개하여 영아의 인지능력에 영향을 미치는 것으로 나타났다. 영아의 기질은 영아-교사의 상호작용에 영향을 주지 않았지만 영아-교사 상호작용은 영아의 인지능력에 직접적인 효과가 있는 것으로 나타났다. 마지막으로 영아의 의사소통 능력에 관한 경로는 유의미하지 않은 것으로 나타났다.

• Asia pacific journal of information systems
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• 제20권1호
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• pp.57-79
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• 2010

In a virtual community, one can possess multiple identities and pretend to be different by creating self-identity in contrast with his or her actual self. Does false identity undermine the qualitative growth of a virtual community by reducing members' accountability? Or does it stimulate their contributive behaviors by ensuring freedom of speech? It is imperative to understand the effects of multi-identity considering the distinct properties of a virtual community in which people easily change their identities at little or no cost. To answer these questions, we adopted the concept of self-discrepancy from the social psychology theory rooted in the concept of the self and developed a theoretical model to predict quality of contribution of the individual member in virtual communities. Based on the self-discrepancy theory, we first identified two different domains of the self: (1) an "actual self" that consists of attributes that the person believes he or she currently possesses in real life and (2) a "cyber self" that consists of attributes the person believes he or she possesses in a virtual community. Next, we derived an index for two different types of self-discrepancy by using the differences between the actual and the cyber identities: Personal Self-discrepancy and Social Self-discrepancy. Personal Self-discrepancy reflects the degree of discrepancy between actual and cyber identity regarding a person's intelligence, education, and expertise. Social Self-discrepancy reflects the degree of discrepancy between actual and cyber identity regarding a person's morality, sociability, and accordance with social norms. Finally, we linked them with sense of virtual community, perceived privacy rights, and quality of contribution to examine how having a multi-identity influences an individual's psychological state and contributive behaviors in a virtual community. The results of the analysis based on 266 respondents showed that Social Self-discrepancy negatively influenced both the Sense of Virtual Community and Perceived Privacy Rights, while Personal Self-discrepancy negatively influenced only Perceived Privacy Rights, thereby resulting in reduced quality of contribution in virtual communities. Based on the results of this analysis, we can explain the dysfunctions of multi-identity in virtual communities. First, people who pretend to be different by engaging in socially undesirable behaviors under their alternative identities are more likely to suffer lower levels of psychological wellbeing and thus experience lower levels of sense of virtual community than others. Second, people do not perceive a high level of privacy rights reflecting catharsis, recovery, or autonomy, even though they create different selves and engage in socially undesirable behaviors in a virtual community. Third, people who pretend to be different persons in terms of their intelligence, education, or expertise also indirectly debase the quality of contribution by decreasing perceived privacy rights. The results suggest that virtual community managers should pay more attention to the negative influences exercised by multi-identity on the quality of contribution, thereby controlling the need to create alternative identities in virtual communities. We hope that more research will be conducted on this underexplored area of multi-identity and that our theoretical framework will serve as a useful conceptual tool for all endeavors.