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Analysis of Secondary School Science Teacher's Concept on Atmospheric Pressure (중등학교 과학 교사들의 대기압에 관련된 개념 분석)

  • Lee, Jee-Hee;Jeong, Jin-Woo;Woo, Jong-Ok
    • Journal of The Korean Association For Science Education
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    • v.22 no.3
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    • pp.560-570
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    • 2002
  • This study was focused on whether secondary science teachers have consistent, integrative scheme on the definition of atmospheric pressure and phenomena caused by air pressure. We had made questionnaire and let 94 science teachers answer. We sorted the responses according to their major, school and compared them with the description in textbooks. The result can be summarized into three findings. First of all, teachers whose major is chemistry have strong tendency to understand that atmospheric pressure is caused by molecular motion though it, in textbooks, is defined as the pressure by weight of air mass. The half of respondents believed that decreasing of atmospheric pressure in high altitude is due to molecular motions, while most textbook says decrease in the weight of air mass. Secondly, many science textbooks show that air mass expands, rises, becomes less dense and the pressure of atmosphere becomes low when it receives heat. So, most of respondents explained low pressure is formed by lower density. Thirdly, they answered that they just teach the phenomena of air pressure by using the textbooks which mainly deal with the present state rather than a principle. In conclusion, the science textbooks should present the exact description and consolidated structures of those concepts to prevent students from having misconceptions on air pressure. In addition, training program for science teachers would be necessary to reconsider and explore the natural phenomena in various viewpoints.

Influence of Dental Hygiene Students' Personality Types on Bioethical Perception (치위생(학)과 학생의 성격유형이 생명윤리의식에 미치는 영향)

  • Ahn, Yong-Soon;Han, Ji-Hyoung;Kim, Ki-Eun
    • Journal of dental hygiene science
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    • v.13 no.3
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    • pp.347-353
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    • 2013
  • This study was conducted to provide dental hygiene students with an opportunity which let them learn and have responsibility on bioethical perception by carrying out a survey for bioethical perception by personality types targeting 519 dental hygiene students. The study results were as follows: 1. Generally, in personality types, gender affects friendliness. Also, significant difference was shown in conscientiousness by age and practical experience. From finance point of view, significant difference was shown in neuroticism, extroversion, conscientiousness and openness, however, they did not satisfy test for equality of variances. 2. Generally, in bioethical perception, gender affects embryos right to life significantly (p <0.001) and considerable difference was appeared in intrauterine insemination by age. Significant differences were shown in embryos right to life by grade and whether students have practical experiences or not was the key factor which lead considerable difference in abortion. 3. In correlation of variances for personality types and bioethical perception, only friendliness and embryos right to life had weak correlation of 0.119. 4. In personality types affecting bioethical perception, friendlier personality had strong influence on embryos right to life. From this study, it can be concluded that bioethical perception could be affected by five personality types although they are not conclusive indicators which provide all the information.

Vegetation Structure and Flora of Pinus thunbergii Forests in Western Coast of Korea - Focusing Gijipo, Chunjangdae, Janghang and Goosipo - (서해안 곰솔림의 구조분석과 식물상 - 기지포, 춘장대, 장항 및 구시포를 중심으로 -)

  • Kim, Min-Ha;Park, Chong-Min;Jang, Kyu-Kwan
    • Korean Journal of Environment and Ecology
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    • v.30 no.2
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    • pp.199-213
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    • 2016
  • This study aimed to analyze the vegetation characteristics of the coastal forests and to figure out if there is possibilities to develop the forests into mixed stand multistory forests and to suggest some sound management practices. The vegetat- ion structure and flora of four sites; Kijipo, Chunjangdae, Janghang and Kusipo in the west coastal forests in Korea were investigated and analyzed in the present study. In the every site, Pinus thunbergii was dominating the tree layer in the forests. And P. densiflora, Robinia pseudoacacia, Quercus serrata, Prunus sargentii var. sargentii, Q. acutissima and Castanea crenata were dominating the subtree layers in some sites. P. thunbergii stands in four sites would maintain for a while since the populat- ion density of middle aged group is higher than those of young and old groups. According to the geographical location conditions, there is a possibility that the coastal forests in Kusipo site would progress into oak tree stands in the long run. The biodiversity was quite high to have 205 taxa in the study sites. To induce the coastal forests into multistory forests, P. thunbergii stands need to be thinned. And then creating the environment including making some pathways and site usage rest-riction is needed to let new diverse plants could come in and grow for a success-ful multistory forests.

The Study of Application of Bio-Surfactant Producing Bacteria for Growing Crop in Oil Spilled Soil (기름으로 오염된 토양에서 작물생육을 위한 계면활성제 생산 Bacteria의 활용에 관한 연구)

  • Hwang, Cher-Won;Chang, Hae-Won;Choe, Yong-Rak
    • Journal of Life Science
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    • v.17 no.7 s.87
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    • pp.944-947
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    • 2007
  • Bacillus sp.LPO3 (producing emulsifying substances such as bio-surfactant) was used as a bio-control agent to degrade hydrocarbon (gasoline in oil spilled crop soil). The soil (brought from fertilizer store)was mixed with gasoline-spilled soil (made with Diatomaceous Earth, Sigma.U.S.A). The study was conducted for a period of 13 days, 13 days during which bacterial growth, hydrocarbon degradation and growth parameters of Bacillus sp.LP03 including shoot and root length were studied. We found that the effective of bacterial producing substance might bio-surfactants let the plants survive even more promote the growth of shoot and root length and showed antifungal activity against gray mold. Without the bacteria, they couldn't grow in oil-spilled soil not even survive. According to the results of the above experiments, we can see with following results, hydrocarbon in gasoline was reduced, day by day, then RNA dot blotting was done and it fit the results we had done. Finally, this Bacteria(producing bio-surfactant) were found to have effective bio-control agent for cropping in oil spilled soil and infected by gray mold.

Roles of Pride, Gratitude and Global Self-Corporate Brand Congruity in Corporate Association on Positive Behavior (기업연상의 기업제품에 대한 긍정행동효과에서 프라이드 및 고마움과 전체자아-기업브랜드 일치성의 역할)

  • Choi, Nak-Hwan;Ha, Koun-Su;Lim, Ah-Young
    • Journal of Distribution Science
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    • v.14 no.9
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    • pp.73-83
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    • 2016
  • Purpose - Previous studies have not paid attention to global self-corporate brand congruity and affective approach from the viewpoint of global self. This study explored an inducement of gratitude that, under the circumstance of corporate association, consumers feel toward corporate's responsible activities, pride related to corporate's ability, and global self congruity. Current researches also have examined positive behavior effects of global self-corporate brand congruity and the feelings on corporate products. Research design, data, and methodology - This research theoretically reviewed that corporate ability and social responsibility association would influence global self-corporate brand congruity, that corporate ability association could induce consumers' sense of pride, and that social responsibility association might induce gratitude. This study, furthermore, examined theoretically whether global self-corporate brand congruity, pride and gratitude could make consumers behave positively toward corporate products, and developed hypotheses. For the empirical analysis with the questionnaires, 231 employees and common people completed the questionnaires, and structural equation model of AMOS 18.0 was used. Results - From the empirical analysis, the outcomes are as followings. First, corporate ability association makes consumers feel proud. Second, corporate social responsible association makes consumers feel grateful. Third, both corporate ability association and social responsibility association let consumers be aware of global self-corporate brand congruity. Fourth, being conscious of each of pride, gratitude and global self-corporate brand congruity prompts consumers to behave positively toward corporate products. Fifth, mediation effects of pride and the congruity in the roles of corporate ability association on the positive behavior, and those of gratitude and the congruity in the roles of corporate social responsible association on the positive behavior are identified. Conclusions - Based on the results, it can be said that a marketing manager should endeavor to make consumers associate the corporate ability and social responsibility. However, the degree of consumers' feelings such as pride and gratitude can differ according to their cultural backgrounds. It is, therefore, needed to be explored by the types of feelings that can be caused more from the difference in cultural backgrounds by corporate association, and to be investigated differently and positively with behavioral effects on the corporate's products between the types.

Development of Acoustic Positioning System for ROV using SBL System (SBL방식을 이용한 무인잠수정의 수중초음파 위치측정시스템 개발)

  • Yu, Son-Cheol;Byun, Seung-Woo;Kim, Joon-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.3
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    • pp.808-814
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    • 2010
  • In this paper we executed a SBL(Short Baseline) underwater acoustic positioning system that is a kind of underwater position estimation system to estimates the 3-dimensional position of ROV(Remotely Operated Vehicle) using hydrophones and DAQ(Data Acquisition) system in the basin which dimensions are $3{\times}3{\times}1.7(m)$. For this experiment, we let 4 hydrophones in different positions of the basin for receiver and 1 hydrophone is fixed on the underwater vehicle for transmitting sensor(pinger). These five hydrophones are communicated with each other to find the 3-D positions of the moving ROV in the basin. The measured signals are collected by DAQ system and the positions of the ROV are plotted by LabView program in real-time. To estimate the position of the ROV we used a trigonometric method. In X and Y plane the estimated data has a small errors but in Z plane the estimated data has large errors so we cannot use this data for position control. One solution of this problem is using depth sensor that implemented of the underwater vehicle. Hereafter, we will test in the ocean using designed SBL system.

Using Balanced Scorecard to Explore Learning Performance of Enterprise Organization

  • Chiu, Chung-Ching;Tsai, Chih-Hung;Chung, Yi-Chan
    • International Journal of Quality Innovation
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    • v.8 no.1
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    • pp.40-75
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    • 2007
  • In the early industrial age which with high intensity of machine and labor, using financial measurement index was good enough to tie in company's mechanization and philosophy of management and been in efficiency. But being comply with "New Economic age," a new economic environment is full of knowledge and information, the enterprise competition had changed from tangible assets, plants to intangible innovation ability of knowledge. As recognizing the new tendency by enterprise, they value gradually the growth and influence from learning. Practice of organization learning not only needs firm structure and be in coordination with both hardware and software, but also needs an affect measurement model to offer enterprise to estimate learning performance. It's a good instrument of financial performance measure mold in the past years, But it's for measuring the past, couldn't formulate enterprise trend to future, hard to estimate investment for future, such as development of products, organization learning, knowledge management etc, as which intangible assets and knowledge ability just the key factors of being win around competition environment in the future. In 1992, Kaplan and Norton brought up Balance Scorecard (BSC) on Harvard Business Review, as an instrument helping enterprise to measure performance, which is being considered to be a most influence management instrument. It added non-financial index such as customer, internal process and learning growth besides traditional financial index, as offering enterprise an index to measure and manage intangible assets and intellectual property. As being aware of organization learning is hard to be ignored in the new economic age, this research is based on learning and growth of BSC, and citing one national material company try to let the most difficult measurement performance of organization learning, to be estimate through BSC, analyze of factor and individual case, to discuss the company how to make the related strategy and vision of organization learning to develop learning and growth of the structure of BSC, subject the matter of out put factors to be discussed, and measure the outcomes as a result of research. The research affect offers (1) the base implement procedure of carrying out BSC; (2) the reference of formulating measurement index while enterprise using BSC to estimate performance of organization learning; (3) the possibility bottleneck maybe forcing while carrying out BSC, to be an improvement or preventive for enterprise.

A study of the elderly housing type development plan considering the Preconsumer Housing Characteristic -focused on Seoul metropolitan area- (예비 수요자 주택선호특성을 고려한 유형별 고령자주택 개발방안에 관한 연구 -수도권을 중심으로-)

  • Kim, Min-Chang;Won, You-Ho;Lee, Joo-Hyung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.5
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    • pp.2844-2858
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    • 2014
  • The society experiencing the industrialization and urbanization has got over the socio-demographic change. these changes make the number of the population around the world, and this phenomenon is flowing into the whole country. Korea has became a Aging Society since 2000 and will be turned into the aged society by the 2018. therefore, the importance of preparing elderly living life such as silver town is getting emphasized. the purpose of this study is aimed at analyzing the decision elements of the preliminary demanders' intention who selecting Elderly Housing. Based on this study, it was broken down by the type much more. Binary Logistic Regression Analysis of Factors affecting the Elderly housing choices were subdivided. Through this process, improvement and the implications of this study was derived. this study deducts 3 kinds of implications. First, the preference for the development of elderly housing are different with each type of characteristics. Second, the indicators along with the individual characteristics account for the most part of the surface. so the specific investigation for the demand must be required to check the indicators. Third, when it comes to development of urban elderly housing, it requires to have a part of a local government plans securing the land. Fourth, when it comes to development of suburb elderly housing, it is required to arrange the living environment around the suburbs to let user classes living in Gyeonggi-do flow into elderly housing and live their new-life in the suburbs. Finally, when it comes to development of rural elderly housing, a variety of production, leisure and other programs should be made and put into there.

Analysis of the Relationship between Workers' Personal Goals and Perceptions of Calling (재직자의 개인목표와 소명의식 관계 분석)

  • An, Yoon-Jung;Seo, Ji-Yoon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.7
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    • pp.3263-3274
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    • 2013
  • This study purposed to examine the relationship between personal goals and perceptions of calling. For the purpose, this study conducted a questionnaire survey of 371 workers(finance, educational service, IT service sector) in Metropolitan area. Data were analyzed by t-test, Pearson's correlation, correlation analysis. The results were as follows. The individuality of personal goals and presence-transcendent summons and purpose & meaning, prosocial orientation of perceptions of calling were significantly different according to school career and the social responsibility, resource provision of personal goals and all sub-factors concerning perceptions of calling according to religion existence. Also, the individuality of personal goals and all sub-factors concerning perceptions of calling were significantly different according to organization type and according to their job, the presence-transcendent summons and purpose & meaning, prosocial orientation of perceptions of calling were significantly different. According to groups which have high or low integrative social relationship goals, perceptions of calling were significantly different. There was a correlation between the integrative social relationship goals and the perceptions of calling. Therefore, in order to encourage workers' perceptions of calling, the importance of integrative social relationship goals were verified. And it is necessary to have supporting systems to let workers design their life goals through their job in their organization.

Somatic Cell Counts in Milk of Buffaloes Administered Oxytocin During Early Lactation

  • Prasad, Jyotsna;Singh, Mahendra
    • Asian-Australasian Journal of Animal Sciences
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    • v.14 no.5
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    • pp.684-692
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    • 2001
  • To find out the effect of oxytocin on somatic cell count and milk production, 12 primiparous and multiparous Murrah buffaloes were selected, immediately after the parturition, from the Institute's buffalo herd. These were divided into two groups of 6 each. Buffaloes of group I did not receive oxytocin injection (control); whereas, buffaloes of group II were administered oxytocin during early lactation (av. 42.50 days). The oxytocin injection was given in doses of 2.5 IU i.m. before the start of milking, to let down the milk, for a period of 5 days. Samples of milk from individual buffaloes were collected for 5 days before (Period I), during (Period II) and after (Period III) from both the group of buffaloes. Milk samples of A. M. and P. M. milking were composited in proposition to milk yields for analysis of milk constituents. Normal values of somatic cell counts in group I of buffaloes varied from 0.54 to $0.75{\times}10^{5}cells/ml$. Mean cytoplasmic particles and epithelial cells varied from 3.68 to $7.19{\times}10^{5}cells/ml$ and 0.13 to $0.54{\times}10^{5}cells/ml$. On percentage basis the epithelial and the total leucocyte count were 60 and 40. Total leucocyte count, in the study varied from 0.17 to $0.69{\times}10^{5}cells/ml$. The differential cell count of milk indicated presence of lymphocytes (16.50 to $61.16{\times}1000$), neutrophil (0.00 to $2.00{\times}1000$) and monocyte (0.00 to $18.16{\times}1000$). Somatic cell count (p<0.01) and epithelial cells (p<0.05) varied between buffaloes and between periods of study. Total leucocyte counts of milk were also significantly varied between periods (p<0.05). The change in fat, lactose, chloride, EC and NEFA concentrations during different periods of study, were highly significant, indicated diurnal variations in different buffaloes during different days of experiment. Administration of oxytocin resulted in increase in somatic cell counts of milk (p<0.01) due to the increases in total leucocyte count (p<0.01) during the treatment period. The differential cell count indicated that oxytocin administration increased lymphocyte number significantly (p<0.01). However, secretion of neutrophil, monocyte and cytoplasmic particles were not affected by oxytocin. Eosinophil and basophil cell, though present in few samples, remain unaffected by oxytocin administration. There was no effect of oxytocin on milk production, composition, pH, EC and NEFA concentration.