• 한국지하수토양환경학회지:지하수토양환경
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• 제29권2호
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• pp.1-10
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• 2024

With industrial development, the inevitable increase in both organic and inorganic waste necessitates the exploration of waste treatment and utilization methods. This study focuses on co-pyrolyzing lignin and red mud to generate metalbiochar, aiming to demonstrate their potential as effective adsorbents for water pollutant removal. Thermogravimetric analysis revealed mass loss of lignin below 660℃, with additional mass loss occurring (>660℃) due to the phase change of metals (i.e., Fe) in red mud. Characterization of the metal-biochar indicated porous structure embedded with zero-valent iron/magnetite and specific functional groups. The adsorption experiments with 2,4-dichlorophenol and Cd(II) revealed the removal efficiency of the two pollutants reached its maximum at the initial pH of 2.8. These findings suggest that copyrolysis of lignin and red mud can transform waste into valuable materials, serving as effective adsorbents for diverse water pollutants.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2005년도 학술발표논문집
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• pp.74-79
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• 2005

Many reservoirs have been constructed for sustainable utilization of water resources in Korea. Effective management of water resources in Korea becomes very important in resent years. Especially, the dredging in reservoirs is important for effective water resources management and one in easy water resources security methods. According to "The reservoir dredging mid-long term planning investigation report", it was investigated that 1221 reservoirs need to dredge among 3,288 reservoirs managed by KARICO. And, KARICO made a survey of reservoirs for the sediment and storage change in $2002{\sim}2004$. In results, it was investigated total storage $1,406{\pm}10^6m^3$, effective storage $1,344{\pm}10^6m^3$ in mid-small 2,748 reservoirs and the storage ratio decreased total storage ratio 15.7%, effective storage ratio 4.4%.

• 대한예방한의학회지
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• 제14권2호
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• pp.43-56
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• 2010

Objectives : This study aimed to investigate the attitude of healthcare consumers toward the East-West Collaborative Medical Practices(hereafter EWCMP). Method : The participants were 245 healthcare consumers who visited outpatient clinic of an university hospital, and attended at an emergency rescue educational program held by an emergency medical center, Busan. Data were collected by interviewing or self-reporting with questionnaires and analyzed with descriptive statistics and $X^2$ test with SPSS win 14.0. Results : 53.1 percent of 245 participants has heard, 13.9 percent has ever used, and 82.4 percent wanted to use EWCMP in the future. For participants who has used EWCMP, the decision to use it was made by themselves(58.8%), 26.5% of them was satisfied with EWCMP, and 79.4% showed the intention to introduce EWCMP to others. The use of EWCMP was significantly different by gender($X^2$=4.702, p=0.030) and having job or not($X^2$=14.305, p<0.001). Preferred type of EWCMP was to use both medical and Korean medical treatment at the same time(42.4%). Musculoskeletal disease(51.0%) and circulatory disease(51.0%) were expected to be the most effective when the EWCMP applied to them. Utilization of EWCMP was expected to be effective in disease treatment(88.2%), diagnosis(83.3%), and prevention(75.1%), and to increase medical cost(66.1%). Intention to use of EWCMP was not significantly different by demographic characteristics. Conclusion : Considering low proportion of utilization of and positive attitude toward the EWCMP among general populations, it is needed to introduce or advertise EWCMP to them.

• 농촌의학ㆍ지역보건
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• 제17권1호
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• pp.17-24
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• 1992

The medical care insurance system has been adopted in rural areas in 1988, since then, the utilization of medical care services has increased rapidly in rural areas. The government has restructured the 15 health centers, which are located in remoted rural areas and these 15 health centers were strengthend to provide the curative care to the residents in order to meet the curative can demand of the residents. Besides the reorganization of the health centers, the government has implemented the oriental medical care demonstration project at the health center in a designated rural areas. This study was aimed to analyze the utilization and expenses of medical and oriental medical care services in a designated rural areas. Number of annual visits of residents to health centers in 1991 showed slightly decreased compared with that in 1989. However number of annual visits to the hospitalized health centers was an increase of 49.3%~64.5%. Regarding the coverage of curative care for the residents in rural areas, the hospitalized health centers are functioning more effective than that of health center. Expenses per case of medical care rendered by health center was lower than that of oriental medical care, while the expenses of the medical care was quit higher than that of oriental medical care in the hospitalized health centers. According to the above mentioned study results, the hospitalized health centers were more effective and suitable to provide a curative care to the residents than the health centers, and also the oriental medical care could be needed to be provided by public health network in the near future.

• 한국환경과학회지
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• 제23권6호
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• pp.1121-1130
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• 2014

This study aims to find the perception and utilization of the citizen about the dryness watch warning (DWW) among special weather reports. For this we have made up a descriptive questionnaire including the perception, utilization of special weather reports. Using the SPSS 17.0 program, descriptive statistics, t-test, ANOVA and Scheffe test were used to analyze the collected data. The results are as follows; The perception of DWW is measured by 4 point Likert scale and the average is $15.97{\pm}3.70$ (percentile=57.0). This value shows that the awareness level is not that high and according to the occupation, college students show the lowest awareness and housewives show the highest awareness. According to the age, the teens and twenties show the lowest awareness and fifties and sixties show the highest awareness. Although the perception of the teens and college students are rather poor, there were many positive answers that it is necessary to establish the advanced disaster prevention plan according to the questionnaire about the utilization of DWW. Therefore, if we come up with an effective plan to improve the perception than we can expect a large-effect in terms of fire and forest fire prevention. The perception of DWW can be improved by providing weather information and weather related education program on TV or internet which have the high level of preference. Also, it is necessary to provide online and offline program of advertising education and disaster management education through the weather forecast bureau which is the host organization of delivering weather information.

• 복식
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• 제66권4호
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• pp.111-127
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• 2016

The study aims to examine the forms of 'image expression' and utilization of model poses in fashion photos, and to delve into the characteristics and the intents that make certain model poses effective in expressing an image. The study used the fashion photos in the fashion magazine, Vogue, to analyze the different model poses used to express different images. The results are as follows. First, image expression forms in fashion photos were categorized into 'direct product suggestion expression form', 'sensual image expression form', 'sexual image expression form', 'story telling expression form', 'everyday situation expression form', and 'fantastic image expression form'. The different utilization types of model poses were categorized into 'type utilizing intangible elements', 'type utilizing complicated elements', 'type utilizing living organisms', 'type utilizing props', 'type utilizing clothes', 'type utilizing location', 'type utilizing accessories', and 'type utilizing products'. Second, the most common expression form for fashion photos used in advertisements was the 'direct product suggestion expression form', which was followed by the sensual image expression form. The most popular form used in the editorial fashion photos was the direct suggestion product expression form, which was followed by the story telling expression form. Third, the most common model pose type for direct product suggestion form was the 'type utilizing product'. Fourth, 'direct product suggestion expression form' was mostly used in editorial fashion photos. The most common utilization types of model poses were 'type utilizing clothes', 'type utilizing props', and 'type utilizing place'.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2000년도 THE THIRD INTERNATIONAL CONFERENCE ON AGRICULTURAL MACHINERY ENGINEERING. V.II
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• pp.446-459
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• 2000

This study was carried out in order to find out an effective machinery utilization strategy by conducting a survey on utilization and maintenance of agricultural machinery. The survey showed that the no. of utilization hours for power tiller in a year was 190.2hrs, 208.6hrs for tractor, 59.1hrs for rice transplanter, 74.0 hrs for combine, 44.6 cultivator and 254.4hrs for 4.4hrs for grain dryer. The period covered the time the machine was until it became unserviceable. The results are as follows: 10.0yrs for power tiller, 7.5yrs for tractor, 7.4yrs for rice transplanter and 5.4yrs for combine. This indicate that the actual period of use for power tiller and rice transplanter was longer than the expected period of duration years so there is a need for adjustment. The factors considered by the farmers for purchasing agricultural machine were: farm size(32%), machine operation (26.0%), performance(l4.0%) and post or after sales service(12.6%), according to the survey. It showed that repair cost rate in a year was classified into major agricultural machine; 4.8% for combine; 3.9% for tractor; 3.5% for rice transplanter; 2.0% for power tiller; 1.6% for grain dryer; and 1.2% for cultivator. The reasons for poor maintenance were insufficient after sales service(25%) and difficulty in buying parts(75%) because of the unavailability of parts in local shops(55%), imported models(30%) and outmoded model(15%).

• 에너지공학
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• 제6권1호
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• pp.26-33
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• 1997

유기주형물질을 첨가하지 않고 순수하고 결정성이 좋은 구리이온이 교환된 Cu-ZSM5 제올라이트 촉매를 제조하여 NO 분해반응 실험에 사용하였다. 구리이온교환 정도의 증가에 따라 NO 분해 활성은 점차로 증가하였고 100% 이상으로 구리이온교환 시에도 지속적으로 증가하였다. 산소의 존재하에서 NO의 분해 활성은 $O_2$양이 증가할수록 저하되었고, NO, $O_2$TPD실험 결과 NO의 분해 활성점과 $O_2$의 흡착점은 같은 것으로 판명되었다. 또한 50$0^{\circ}C$에서 전처리 후에도 촉매 표면의 $O_2$는 완전히 탈착되지 않았으며, 50$0^{\circ}C$에서 수소 처리를 하였을 경우 반응 활성이 초기에 상당량 향상되는 현상으로 보아 촉매 표면에 흡착된 산소가 NO의 분해반응 활성을 저하시키는 요인이 된다는 것을 알 수 있었다.

• 디지털융복합연구
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• 제15권1호
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• pp.329-338
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• 2017

본 연구의 목적은 소득수준에 따른 암 검진 이용 현황과 암 검진 이용에 영향을 미치는 요인을 살펴보는데 있다. 2014년 국민건강영양조사 자료를 이용하였으며, 설문에 응답한 만 40세 이상 3,393명을 분석대상자로 하였다. 분석대상자의 일반적인 특성과 생활양식, 건강관련변수, 소득수준에 따른 암 검진 이용 현황을 파악하기 위하여 기술통계를 실시하였으며, 암 검진 이용에 영향을 미치는 요인을 파악하기 위하여 로지스틱 회귀분석을 실시하였다. 연구 결과, 소득수준에 따른 암 검진 이용 현황에는 유의한 차이가 있었으며, 암 검진 이용에 영향을 미치는 변수는 성, 연령, 배우자 유무, 교육수준, 경제활동 유무, 민간보험 가입 유무, 흡연상태, 중강도 신체활동 유무, 만성질환 개수, 가구소득 수준 등으로 나타났다. 이는 소득이 낮은 계층, 만성질환자 등을 위해 디지털 시대에 적합한 보다 효과적인 암 검진 프로그램의 개발이 필요함을 시사해준다. 이러한 결과들은 향후 소득수준에 따른 암 검진 이용의 형평성과 보건의료 정책 수립에 기초자료로 의미 있게 활용되어질 수 있으리라 여겨진다.

• 디지털융복합연구
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• 제19권3호
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• pp.89-97
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• 2021

본 연구는 고령층의 디지털 정보역량과 정보활용의 상호 관련성에 주목하면서 하나의 모형 속에서 이들의 영향요인을 동시적으로 분석하며 관계의 양상들을 종합적으로 파악하는데 초점을 둔다. 분석자료는 「2019 디지털정보격차 실태조사」를 사용하였고, 분석대상은 만55에 이상 고령층 1,703명 이었다. 분석방법은 SUR(seemingly unrelated regression)을 사용하였다. 분석결과 인지된 유용성, 자기효능감, 자신감과 같은 심리적 변수가 정보역량에 정적인 영향을 미치는 것으로 나타났고, 자기효능감과 자신감과 같은 심리적 요인과 함께 디지털 조력과 같은 사회적 요인이 정보활용에 정적인 영향을 미치는 것으로 나타나 정보역량과 정보활용 간 영향요인에서 차이가 있음을 확인하였다. 본 연구는 고령층의 정보역량과 정보활용 영향요인을 보다 세밀하게 분석함으로써 고령층 정보격차 해소 관련 이해의 확장에 기여하고, 이를 토대로 고령층 정보격차 해소 전략 방향을 제시하였다.