• The Korean Journal of Ecology
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• 제27권1호
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• pp.27-33
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• 2004

Cryptomeria japonica plantation was monitored every year during 15 years from 1983 to 1997 for stem diameter and volume. The reciprocal equation, 1/Y = A + B/N, was applied to the relationship between cumulative volume Y and cumulative number N from the largest tree in the stand each year. The parameters A and B, which means respectively the reciprocal of an asymptotic value of total stand stem volume and the reciprocal of the maximum stem volume, are related by a power function. The power functional relationship between A and B derived a linear relationship of B-points ( $N_{B}$, $V_{B}$; $N_{B}$ = B/A, $Y_{B}$ = 1/2A) of each Y-N curve on log-log coordinates. The gradient of B-point line was so steep that the Y-N curve moved parallel upward year by year. The time trajectory of mean stem volume (W) and density ($\rho$) provided evidence in favor of the 3/2 power law of self-thinning, because the gradient of W - $\rho$ trajectory on log-log coordinates approximated to -3/2 at the final stage of stand development. On the basis of the results of Y-N curves and W - $\rho$ trajectory, the time trajectory of maximum stem volume $W_{max obs}$ and $\rho$ was derived theoretically. The gradient of $W_{max obs}$ - $\rho$ trajectory on log-log coordinates is calculated to be -0.6105 at the final stage. The gradient of $W_{max obs}$ - $\rho$ trajectory was steeper than that of W - $\rho$ trajectory at the early stage, while the former is gentler than the latter at the later stage.stage.e.age.e.

• 대한간호학회지
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• 제23권4호
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• pp.649-663
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• 1993

A long life is the desire of many people. The purpose of this study was to describe the thoughts that are held by elderly people about long life as the elderly are approaching the end of life. The research was conducted using an ethnographic method to add understanding to this subject. The field work for this study was done from July, 1991 to August, 1993 in third phases in Chun Buk province. The results of the present study show the following : The thoughts of the elderly about chang su showed three important concepts : In Myoung Sae Chun(lived as life), Su Cheuk Dah Yok(long life is a disgraces, and Transcendence of life: In Myoung Sae Chun showed the thought of limitation of man’s life and realistic thought about the life through free oneself from death and life. Su Cheuk Dah Yok meant experience of physical difficulty, experience of sons and daughter’s death ahead one’s own self. Senility was the most afraid problem for the elderly. Transcendence of life showed pursuit of a continuing life through connected with sons and the family. The conditions promoting chang su were described as clear water, fresh air, adequate eating, deep sleeping, gender(female). In addition it showed that ecological and environmental conditions (heavy work, starvation, vegetable food, physical environment, respection for the elderly). These results showed that the elderly was recognized one’s own self as living being rather than adhered to the life, and will promote understanding the elderly’s desire for long life. Also, suggested to nursing practice that should maintain self-esteem and respect for the elderly, Therefore, these results can be used nursing practice for the elderly.

• 한국콘텐츠학회논문지
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• 제12권1호
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• pp.234-243
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• 2012

본 연구는 국내 최초로 배우를 대상으로 무대불안을 극복하기 위한 체계적인 심리기술훈련 프로그램을 구성하고, 이를 바탕으로 심리상담을 실시하여 그 현장 적용의 가능성과 효과성을 분석하고자 하였다. 이를 위해 직업극단 연기자로 활동하고 있는 배우 2명을 목적적 표본추출법으로 선정하였다. 심리기술훈련 프로그램을 크게 5단계 12회기로 구성하였으며, 기초 교육, 호흡 조절법, 점진적 이완법, 집단상담, 심박수 바이오피드백훈련, 자기집중훈련, 루틴훈련, 행동수정 및 자기강화훈련, 심상훈련 등으로 내용화되었다. 무대불안 극복을 위한 심리기술훈련과 상담을 적용한 결과, 신체적 인지적 상태불안요인 모두 훈련 적용 전보다는 긍정적인 변화를 보였으며, 내적 변화 역시 긍정적으로 유발되어 무대불안을 극복하는데 도움을 준 것으로 나타났다. 또한 배우의 자기발견, 배우와 배우간의 앙상블, 배우와 관객 사이의 교감 증진에 긍정적인 변화가 있었다. 결론적으로 배우의 무대불안 극복을 위한 심리기술훈련 및 상담은 현장 적용성과 효과성이 있는 것으로 나타났다.

• 생태와환경
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• 제42권3호
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• pp.303-316
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• 2009

Benthic macroinvertebrate communities collected from eight different streams in South Korea were analyzed to compare community and biological indices across different levels of water pollution. The Self-Organizing Map (SOM) was utilized to provide overview on association of the proposed indices. The sample sites were accordingly clustered according to the gradient of pollution on the SOM. While the general trends of the indices were commonly observable according to different levels of pollution, the detailed differences among the indices were also illustrated on the SOM. The conventional diversity and evenness indices tended to be high even though the water quality state was poor representing relatively weak gradient at polluted sites, while the index presenting the saprobic degree such as family biotic index showed the stronger gradient at the polluted area and was robust to present the gradient. Our results also confirmed the general characterization of two indices: The Shannon index is more strengthened by the number of species occurring at the sample sites, while the Simpson index is more influenced by the degree of evenness among the species. The patterning based on the SOM was efficient in comparatively characterizing the proposed indices to present ecological states and water quality.

• KIEAE Journal
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• 제10권5호
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• pp.131-137
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• 2010

The building industry must aim at high-durability and sustainability. A holistic life cycle based approach is recommended to reduce the environmental load. In recent years, technical innovations in the construction industry have advanced to a great extent, and caused the active research and development of high-performance and multifunctional construction materials. Nowadays, various polymer powders have been commercialized to manufacture construction materials in the form of prepackaged-type products, which have rapidly been developed for lack of skilled workmen in construction sites. Recently, terpolymer powders of improved quality have been developed and commercialized as cement modifiers. And, hydrocalumite is a material that can adsorb the chloride ions (Cl-) causing the corrosion of reinforcing bars and liberate the nitrite ions (NO2-) inhibiting the corrosion in reinforced concrete, and can provide a self-corrosion inhibition function to the reinforced concrete. The purpose of this study is to ascertain the self-corrosion inhibition function of polymer-modified mortars using redispersible powders with hydrocalumite. Polymer-modified mortars using VA/E/MMA and VAE redispersible powders are prepared with various calumite contents and polymer-binder ratios, and tested for chloride ion penetration depth, corrosion inhibition. As a result, regardless of the polymer-binder ratio, the replacement of ordinary portland cement with hydrocalumite has a marked effect on the corrosion-inhibiting property of the polymer-modified mortars. Anti-corrosion effect of polymer-modified mortars using VA/E/MMA terpolymer powder with hydrocalumite is higher than that of VAE copolymer powder.

• 한국콘텐츠학회논문지
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• 제8권6호
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• pp.130-139
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• 2008

본 연구는 국내 최초로 배우를 대상으로 무대불안을 극복하기 위한 체계적인 심리기술훈련 프로그램을 구성하고, 이를 바탕으로 심리상담을 실시하여 그 현장 적용의 가능성과 효과성을 분석하고자 하였다. 이를 위해 직업극단 연기자로 활동하고 있는 배우 2명을 목적적 표본추출법으로 선정하였다. 심리기술훈련 프로그램을 크게 5단계 12회기로 구성하였으며, 기초 교육, 호흡 조절법, 점진적 이완법, 집단상담, 심박수 바이오피드백훈련, 자기집중훈련, 루틴훈련, 행동수정 및 자기강화훈련, 심상훈련 등으로 내용화되었다. 무대불안 극복을 위한 심리기술훈련과 상담을 적용한 결과, 신체적 인지적 상태불안요인 모두 훈련 적용전보다는 긍정적인 변화를 보였으며, 내적 변화 역시 긍정적으로 유발되어 무대불안을 극복하는데 도움을 준 것으로 나타났다. 또한 배우의 자기발견, 배우와 배우간의 앙상블, 배우와 관객 사이의 교감 증진에 긍정적인 변화가 있었다. 결론적으로 배우의 무대불안 극복을 위한 심리기술훈련 및 상담은 현장 적용성과 효과성이 있는 것으로 나타났다.

• 한국지형학회지
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• 제17권3호
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• pp.17-30
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• 2010

대구를 대표하는 하천인 신천과 금호강에 발달하는 문화지형을 발굴하여 이야기 꺼리를 구성하였고 그것의 활용방안에 대해 다음과 같이 요약하였다. 1) 신천에서 볼 수 있는 대표적인 문화지형으로는 용두바위(하식애), 하식애, 바위그늘(암음), 판상절리지형, 하식동, 토르 등이다. 2) 금호강변에 발달하는 대표적인 문화지형으로는 습지, 나루터, 포인트바, 하식애, 화담(소), 동화천, 무태, 침산, 연암산, 상화대(하식애) 등이다. 3) 신천변과 금호강변에 발달하는 문화지형의 보존을 위해서는 방치되어 있는 문화지형의 발굴과 복원이 절실하며, 가치 있는 문화지형은 문화재로 지정하여 멸실이나 훼손으로부터 보호할 필요가 있다. 4) 활용방안의 경우 신천에서는 문화, 역사, 생태환경 체험을 위한 자연관찰학습장 조성이 필요하다. 금호강의 경우 '대구 금호강 문화지형 탐방로'를 조성하여 탐방객 스스로 찾아갈 수 있도록 하는 '자기주도형 탐방(self-guided tour)' 방식을 도입하는 것이 효과적이다.

• 한국조리학회지
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• 제23권6호
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• pp.153-160
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• 2017

This study was intended to examine the influence of health consciousness on health/taste inferences, affect-based inferences, and perceived conflict between taste and health in food decision making. Seven hundred and fifty-four participants completed the survey. Structural equation modeling with a maximum likelihood method was used to test the relationships among constructs, following the two-step approach. The results of this study showed that more health-conscious consumers have a higher perceived healthfulness of food items but lower anticipated taste. In addition, this study also found consumers' cognitive responses influenced affective responses. Results suggested that when restaurants promote menu items as both healthy and tasty, consumers' positive hedonic emotions (such as pleasure) increased and negative self-conscious emotions (such as guilt) decreased, and consumers' efforts to balance health and taste were supported. At last, the implications both for academia and marketing were also established and discussed.

• KIEAE Journal
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• 제8권6호
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• pp.63-70
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• 2008

Slim floor construction is becoming used throughout many countries. It combines the advantages of flat slab construction with significant inherent resistance to fire. The slim floor system with web openings leads to the reduction of its self-weight. Although the system has enough strength and stiffness, it is necessary to evaluate and improve the effects of dynamic vibration to be able to annoy the residents. Thus, this study evaluates the serviceability of vibration effects based on the dynamic test of five slim composite beams. Based on the experimental results, the initial stiffness and natural frequency of all specimens exhibit the similar trend regardless of the opening and the shape of cross section. The decrease in natural frequency is deeply related to the reduction in the stiffness of specimens and thus, it can be concluded that the damage of slim composite floor can be detected by the measurement of natural frequency instead of the load-carrying capacity and the stiffness.

• The Korean Journal of Ecology
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• 제9권1호
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• pp.73-78
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• 1986

The effects of density and soil nutrient regime on competition between individuals in pure and mixed populations of two annuals. Chenopodium album and Digitaria sanguinalis were investigated at the level of enegy allocation. Seedling emergence of two species was extremely high (>90%) in both pure and mixed culture irrespective of the density and nutrient regime, but percentage of seedling establishment or fertile plant became gradually low with increasing density owing to 'self-thinning'. The mean plant dry weight was significantly reduced with increasing density and decreasing soil fertility. The dry matter production of D. sanguinalis in mixture was markedly greater than in pure culture under medium and high density. Also, as considered the number of seed production as reproductive allocation, relationship between them and the number of seed production per plant showed a similar tendency. Therefore, these results indicated that D. sanguinalis had a greater competitive advantage than C. album and energy allocations to variious organs were regulated by plastic response rather than determined genetically.