• 대한공간정보학회지
• /
• 제12권2호
• /
• pp.17-28
• /
• 2004

본 연구에서는 기존 DRASTIC 모델에 구조선밀도, 토지이용 인자 등을 추가한 수정 DRASTIC 모델을 설정하여 경기도 화남2지구의 지하수오염 가능성을 예측하고자 하였다. 2가지 인자를 추가로 설정한 이유는 우리나라의 수리 지질학적 환경에서 대수층은 대부분 암반 대수층인 점을 고려할 때, 구조선밀도는 지하수 및 오염물질 유동에 직접적인 영향을 미치고, 토지이용은 점오염원 및 비점오염원의 영향을 간접적으로 반영할 수 있기 때문이다. 통계분석을 위하여 각 인자별 격자 레이어를 생성하고, 상관계수를 분석함으로서 신뢰도를 판단하였다. 최종 결과물인 지하수오염가능예측도는 '수정 DRASTIC 취약성'과 오염원의 발생 부하량 값을 논리적으로 비교함으로서 수리지질학적인 측면에서의 오염가능성 지역과 수질측면에서의 오염가능성 지역을 예측할 수 있는 방안을 제시할 수 있었다.

• 보건교육건강증진학회지
• /
• 제23권2호
• /
• pp.1-10
• /
• 2006

Purpose: This study was aimed to evaluate the effects of substance abuse prevention education for middle school students in Busan. Method: The data were collected by a self-administered questionnaire before education and one month later. The whole subjects were 458 students in first grade of middle school. The data were analyzed using frequencies and difference t-test after classifying the whole into potential drug abuse group and not potential group. Results: The substance abuse prevention education was ineffective in the whole group and the potential group. However, in the not potential group, the increasing rate of SPDA(Screening scale for Potential Drug-use Adolescents) score in experimental group was less than in control group. Conclusion: The substance abuse prevention education was effective for the not potential drug abuse group. On the other hand, intensive long-term drug abuse treatment program was needed for the potential group.

• 한국환경과학회지
• /
• 제15권5호
• /
• pp.493-501
• /
• 2006

The increase in environmental loads and energy consumptions has resulted in the need of developed new forms of energy for a sustainable use for the society. Recently, the viability of using unused energy has attracted a great deal of attention. From the view point of using unused energy, the most critical problem can be referred to as the distance between the heat source/sink and heat demand area. The water resource in the city water system was used to solve this distance problem with unused energy. The calculation method of the potential use unit was used to survey the potential of the water resource in the city water system. The amount of theoretical unused energy and energy savings in the model city were estimated using this method. It is estimated that the amounts of energy savings and $CO_2$ reduction correspond to 131.3 GWh and 29280[t-C], respectively, per annual basis.

• ALGAE
• /
• 제31권4호
• /
• pp.403-414
• /
• 2016

The use of ionizing radiation and radioactive elements is becoming increasingly popular with the rapid developments in nuclear technology, radiotherapy, and radio diagnostic methods. However, ionizing radiation can directly or indirectly cause life-threatening complications such as cancer, radiation burns, and impaired immunity. Environmental contamination with radioactive elements and the depletion of ozone layer also contribute to the increased levels of radiation exposure. Radioprotective natural products have particularly received attention for their potential usefulness in counteracting radiation-induced damage because of their reduced toxicity compared with most drugs currently in use. Moreover, radioprotective substances are used as ingredients in cosmetic formulations in order to provide protection against ultraviolet radiation. Over the past few decades, the exploration of marine algae has revealed the presence of radioprotective phytochemicals, such as phlorotannins, polysaccharides, carotenoids and other compounds. With their promising radioprotective effects, marine algae could be a future source for discovering potential radioprotective substances for development as useful in therapeutics.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
• /
• pp.432.1-432.1
• /
• 2014

Hydroxyapatite (Ca10(PO4)6(OH)2) is known as the main inorganic component of mature mammalian bones and teeth. Because of its biocompatibility, hydroxyapatite has attracted much attention due to its potential applications in many biomedical researches. Here, we tested a therapeutic potential for the use of hydroxyapatite as an anticancer drug delivery vector. We prepared various types of hydroxyapatite having different chemical contents and morphologies using hydrothermal synthesis. The capability of hydroxyapatite as drug delivery materials was examined by adsorption kinetics of 5-fluorouracil molecules, a common anticancer drug, in phosphate buffered saline. We find that hydroxyapatite with smaller crystal size and higher phosphate contents shows improved adsorption property. Given that hydroxyapatite provides a scaffold for bone regeneration, these results highlight a potential use of hydroxyapatite in therapies aimed at osteosarcoma.

• 한국환경과학회지
• /
• 제28권11호
• /
• pp.1027-1032
• /
• 2019

This study aimed to analyze the prioritized area for the functional change of agricultural reservoir according to the rapid urbanization and social changes through the mapping method. Changwon-si, Gimhae-si, and Jinju-si in Gyeongnam province were selected as the study area, considering the results of land-use and cluster analysis. As the planning unit of management area, watershed was used and land coverage map from 1975 to 2015 were analyzed for changes of land use. The reduction ratio (%) of farmland was calculated for identifying the changes in 2013 compared to 1975. As a result, the reduction ratio was 11.9% for Changwon-si, 12.2% for Gimhae-si and 9.3% for Jinju-si, and the number of watershed having functionally reduced potential-area was relatively high in the proportion to the city size.

• International Journal of Computer Science & Network Security
• /
• 제22권4호
• /
• pp.408-416
• /
• 2022

The new millennium is characterized by an unprecedented breakthrough in knowledge and information and communication technologies, and the challenges of the XXI century require modernized paradigms of interaction in all spheres of life. Education continues to play a key role in national and global growth. The key role of education and its leadership in developing creative potential, as the main paradigm of the countries' stability, have significantly influenced educational centers. The developers of educational programs use information technologies as an incentive to develop creative potential of educational process. Professional training of the educational candidate is enhanced by the use of information technologies, so the educational applicants should develop technological skills to be productive members of society. Using the latest achievements in the field of information technologies for the organization of the educational process helps to form the operational style of education applicants' thinking, which provides the ability to acquire skills of processing information, that is presented in the text, graphic, tabular form, and increase the level of general and informational culture necessary for better orientation in the modern information space. The purpose of the research is to determine the effectiveness of information technologies as an incentive to develop creative potential of educational process on the basis of the survey, to establish advantages and ability to provide high-quality education in the context of using information technologies. Methods of research: comparative analysis; systematization; generalization, survey. Results. Based on the survey conducted among students and teachers, it has been found out that the teachers use the following information technologies for the development of creative potential of the educational process: to provide video and audio communication process (100%), Moodle (95,6%), Duolingo (89,7%), LinguaLeo (89%), Google Forms (88%) and Adobe Captivate Prime (80,6%). It is determined that modular digital learning environments (97,9%), interactive exercises tools (96,3%), ICT for video and audio communication (96%) and interactive exercises tools (95,1%) are most conducive to the development of creative potential of the educational process. As a result of the research, it was revealed that implementation of information technologies for the development of creative potential of educational process in educational institutions is a complex process due to a large number of variables, which should be taken into account both on the educational course and on the individual level. It has been determined that the using the model of implementation information technologies for the development of creative potential in educational process, which is stimulated due to this model, benefits both students and teachers by establishing a reliable bilateral connection between teacher and education applicant.

• KSBB Journal
• /
• 제26권4호
• /
• pp.267-276
• /
• 2011

There is a growing worldwide interest in the potential of marine biomass as an environmentally friendly and economically sustainable resource. Due to the great lack of comprehensive information about domestic seaweed resources, this study aimed to analyze the existing literature on the production and types of domestic seaweed species. Based on this data the possibilities of industrial use of domestic seaweed for the production of biofuels and bioplastics had been assessed. Our review took into account the seaweed species on domestic coasts as well as the species currently in great production via seaweed farming. Due to their wide distribution, their status as farmed crops, and the likelihood of securing their reliable supply, Codium fragile, Hizikia fuciformis, and Gelidium amansii were deemed to be the most appropriate candidates for domestic industrial use. The industrial potential of seaweed biomass was also explored by comparing the predicted amount of biomass necessary to replace current gasoline and plastics use with currently available farming space. The results of our study imply that once a steady and adequate supply of the proper kinds of seaweed can be secured through seaweed farming, there is a great potential for the development of new seaweed-based biofuels and bioplastics industries in Korea.

• 한국인공지능학회지
• /
• 제11권3호
• /
• pp.7-15
• /
• 2023

Purpose: The purpose of this study is to investigate how consumers perceive electric vehicles and factors that affect attitude, satisfaction, and intention to use electric vehicles and to explore policy issues regarding climate change and global environment. By classifying actual and potential users, this study developed the following research questions: i) factors including economic feasibility, sociality, environmental sustainability, inefficiency, inconvenience, convenience, and uncertainty affect attitude to electric vehicles; ii) attitude to electric vehicles affects actual consumers' satisfaction; and iii) attitude to electric vehicles affects potential users' intention to use. Research design, data and methodology: This study conducted an online survey and applied factor and regression analyses and ANOVA to test hypotheses. Results: The results of this study found that economic feasibility and convenience factors significantly affect attitude in both cases of actual and potential users. How actual users perceive efficiency of electric vehicles negatively and uncertain issues such as battery technology affect attitude to electric vehicles. Conclusions: This study provides policy implications that foster promotional policies for the adoption of electric vehicles for environment and regulate negative aspects. This study also provides managerial implications for manufacturers to develop better technology competences to enhance reliability on electric vehicles.