• 대한지역사회작업치료학회지
• /
• 제4권1호
• /
• pp.85-92
• /
• 2014

목적 : 본 연구의 목적은 운동 강도에 따른 지속적인 운동습관이 수면장애 성인에게 어떠한 영향을 줄 수 있는지 알아보고 수면장애에 효과적인 운동 강도를 알아보고자 하였다. 연구방법 : 본 연구는 K시에 거주하는 수면장애를 가진 30, 40대 성인 남성 90명을 대상으로 하였다. 집단은 고강도 운동집단 30명, 중강도 운동집단 30명, 저강도 운동집단 30명으로 구성하였다. 세 집단의 총 수면지수와 멜라토닌 농도의 비교를 통하여 수면장애의 운동 강도별 효과를 비교하였다. 결론 : 수면장애의 운동 강도별 운동을 수행한 결과, 운동 수행 전, 후의 총 수면지수에서 고강도와 중강도의 운동이 유의성이 있었지만 수면장애에서는 중강도 운동이 효과적이었고, 운동수행 전, 후의 멜라토닌 농도 변화에서도 중강도 운동이 효과적이었다. 결론 : 본 연구의 결론은 성인의 수면장애는 지속적인 운동이 효과가 있지만 저강도 운동과 고강도 운동보다는 중강도 운동이 효과적임을 알 수 있었다.

• 한국식품저장유통학회:학술대회논문집
• /
• 한국식품저장유통학회 2003년도 제23차 추계총회 및 국제학술심포지움
• /
• pp.188.1-188
• /
• 2003

To examine the effect of vacuum packaging on the quality of chicken during storage, microbial (total bacterial counts, mold and yeast, E. coli, and Pseudomonas) changes and drip loss were determined. fresh chicken breasts were prepared and packaged using polyethylene film under vacuum and normal atmosphere, respectively. Samples were then stored at 4$^{\circ}C$ for two weeks. At various time intervals during storage, sample was taken homogenized, and diluted with 0.1% sterile peptone water, and followed by microbial counts. Microbial changes of total bacterial counts, mold and yeast, E. coli, and Pseudomonas during storage of chicken were significantly decreased by vacuum packaging. Drip loss was also significantly decreased. These results indicate that vacuum packaging of chicken should be recommended as a suitable storage method in terms of microbial safety as well as quality of chicken.

• 한국수자원학회논문집
• /
• 제46권8호
• /
• pp.873-884
• /
• 2013

우리나라는 몬순기후의 영향으로 여름철 강우가 집중되기 때문에 작은 기후변화에도 심각한 수자원의 문제를 야기시킬 수 있다. 이로 인해 기후변화에 대한 많은 관심이 집중되어 그에 따른 연구도 활발히 진행되고 있다. 본 연구는 남강유역에서의 미래 기후변화에 의한 하천의 흐름과 수질변화를 예측하기 위해 유역-하천모형을 연계하여 하고자 하였다. 인공신경망기법을 이용하여 기후시나리오를 예측한 후 유역수문 모형인 SWAT모형을 구축하였고 모형의 적용성 평가를 위해 환경부자료를 이용하여 검보정한 결과 $R^2$이 0.7 이상으로 적정수준으로 모의되었다. SWAT의 결과와 HEC-ResSIM을 이용한 미래 남강댐 방류량을 QUALKO의 입력 자료로 사용하였다. 그 결과 저수기에는 풍수기와는 달리 연도별 유량에 따라 BOD가 많게는 약 2mg/L의 차이를 보이는 등 변화 폭이 크게 나타났다. 강우와 유역의 유출이 하천의 수질에 큰 영향을 끼치기 때문에 풍수기에 비해 유량이 적은 저수기에 수질 농도가 높은 것을 알 수 있다. 그러므로 남강댐의 저수기의 용수확보를 통해 남강하류 하천의 유지용수를 확보하고 효율적인 관리를 통해 향상된 수질을 관리 할 수 있을 것으로 판단된다.

• 한국건축시공학회지
• /
• 제8권2호
• /
• pp.121-129
• /
• 2008

Domestic exoteric construction market by opening of world construction market with recent FTA of rapidly change. On these time, need quality increase of construction to possess government official and international competitiveness of customer satisfaction by offering consumer building of good quality. Therefore, must establish direction to inspects and must advance forward formation government official's present actual conditions for building company's QI. This study is as following if summarize studying result of formation government official to improve quality in construction spot. First, formation's CEO will for QI need side improvement the formation government official enemy by important thing. Second, at checking activity and systematic action that participate of responsible persons cooperation enterprise space-time by complete charge department organization should be achieved. Third, complete charge department for quality control operation large size construction firm substantially formation Organizational well operate, but heavy hydrogen building company was construed by greatly unprepared misgovernment. AHP analysis result complete charge department is serious necessity, and the CEO under direct control organizational structure was construed by thing which can bring excellent effect in operation management side of quality business side and formation. Therefore, heavy hydrogen building company should does to occupy competitive power high position with tissue at active quality complete charge deputy.

• 디지털산업정보학회논문지
• /
• 제7권2호
• /
• pp.173-183
• /
• 2011

The business is faced with the situation must improve a power in an increasingly competitive environment due to the recent rapid advance in information technology and the opening and expansion of global market, fast technological change, and various customer demand. The rapid change in information technology is having an effect on not only all the processes to develop products, but information contents that is provided for the purpose of customer value, and the appearance of products. In other words, the information technology is being recognized as a very important factor among other factors for companies to enhance their competitiveness. In addition, it is more efficient to focus on key factor to maintain the competitive advantage on the using of information technology by outsourcing information systems, rather than by operating the systems under their own. Since the global financial crisis, the long-term recession has been increasing companies who is ready to adopt outsourcing or adopted already. This study is to understand the environment and unique characteristics of outsourcing services and related industries focusing on information system operation and management in information outsourcing services, and is to set the concept needed through my theory that is connected to the service quality and customer satisfaction. A lot of business wiew the improvement of service quality and ensuring customer satisfaction as the major factors of business growth, and lots of ongoing studies have focused on service management in the Information outsourcing service industry. Yet few studies have ever concentrated on the quality of information system operation management service. This study, moreover, is to define the quality of service related with customer satisfaction from customer's viewpoint, measuring effects on customer satisfaction. The quality of outsourcing service on information system in this study is a great help to companies who are offering information outsourcing service, and company's managers and staffs who outsourcedto specialized company.

• 수산해양교육연구
• /
• 제22권3호
• /
• pp.388-401
• /
• 2010

This research aims at analyzing impacts of climate change on fisheries. Climate change is an additional pressure on top of the many which fish stocks already experience. This implies that the impact of climate change must be evaluated in the context of other anthropogenic pressures, which often have a much greater and more immediate effect. Conversely, it is evident that fish stocks will be more resilient to climate impacts if the stresses due to other factors, such as over-fishing and pollution, are minimized. Improved management of fisheries and of marine ecosystems can undoubtedly play an important role in adapting to the impacts of climate change. Most of the improvements which are needed do not require new science or understanding, they require patient development of acceptable, effective, responsive social institutions and instruments for achieving adaptive management. Management advices must include complete and transparent information on risks and uncertainties which arise from data quality and from structural deficiencies in the assessment models. Well-designed and reliable monitoring of fish stocks and the marine ecosystem is essential in order to detect changes and give warning in advance of alterations in the productivity of individual species and of the structure and functioning of the ecosystem and fishery economy on which they depend.

• 대한가정학회지
• /
• 제29권3호
• /
• pp.209-226
• /
• 1991

This study aimed at providing the basic data for the measurement of the attitude for socialization of household work by analysis of the attitude for socialization of houselhold work according to demographic variables, the degree of acceptance for living change. This study was composed of the attitude for the socialization of household work was based on time, quality, cost factor. The results of this study were as follows: 1. The attitude for socialization of household work was influenced by sex, age, marriage, sex $\times$ marriage and the degree of acceptance for living change. 2. The variables which affected the attitude for socialization of household work independently had influence on it in the following order : the degree of acceptance for living change, sex, house type. 3. The result of path analysis had confirmed that sex, age, income marriage, house type variable indirectly influenced the attitude for socialization of household work through the degree of acceptance for living change. Sex, and marriage variable directly influenced on the attitude for socialization of household work. Through the this study. The attitude for socialization of houselhold work was influnced by the degree of acceptance for living change. Change of household work is socialization of household work and right attitude to the socialization fof household work is necessary for satisfaction of variouse needs. for saving of time and money through the socialization of household work.

• 한국축산식품학회지
• /
• 제34권6호
• /
• pp.777-783
• /
• 2014

This study investigated the effect of various freezing and thawing techniques on the quality of beef. Meat samples were frozen using natural convection freezing (NF), individual quick freezing (IQF), or cryogenic freezing (CF) techniques, followed by natural convection thawing (NCT) or running water thawing (RT). The meat was frozen until the core temperature reached $-12^{\circ}C$ and then stored at $-24^{\circ}C$, followed by thawing until the temperature reached $5^{\circ}C$. Quality parameters, such as the pH, water binding properties, CIE color, shear force, and microstructure of the beef were elucidated. Although the freezing and thawing combinations did not cause remarkable changes in the quality parameters, rapid freezing, in the order of CF, IQF, and NF, was found to minimize the quality deterioration. In the case of thawing methods, NCT was better than RT and the meat quality was influence on the thawing temperature rather than the thawing rate. Although the microstructure of the frozen beef exhibited an excessive loss of integrity after the freezing and thawing, it did not cause any remarkable change in the beef quality. Taken together, these results demonstrate that CF and NCT form the best combination for beef processing; however, IQF and NCT may have practical applications in the frozen food industry.

• International Journal of Air-Conditioning and Refrigeration
• /
• 제15권3호
• /
• pp.101-107
• /
• 2007

Indoor air quality becomes of a concern recently in view of human health. This study investigates the air diffusion performance and the air change efficiency of a classroom, when outdoor air is introduced in two different ways in addition to the heating/cooling operation of a ceiling-mounted heat pump. A CFD analysis has been performed to investigate the effect of the discharge angle of the air jets from the heat pump for both parallel and series types of outdoor air system. It is observed that the series type creates more uniform indoor environment compared to the parallel type in general. It can be concluded the discharge angle should not be larger than 40o for the parallel type, in order not to generate thermal stratification in the room.

• 한국정밀공학회지
• /
• 제22권9호
• /
• pp.188-193
• /
• 2005

To provide the various machining materials with excellent quality and dimensional accuracy, high -speed machining is very useful tool as one of the most effective rapid manufacturing processes. However, high-speed machining is not suitable for microscale thin-walled structures because of the lack of the structure stiffness to resist the cutting force. A new method which is able to make a very thin-walled structure rapidly will be proposed in this paper. This method is composed two processes, high-speed machining and filling process. Strong workholding force comes out of the solidification of filling materials. Low-melting point metal alloys are used in order to minimize the thermal effect during phase change and to hold arbitrary shape thin-walled structures quickly during high-speed machining. To verify the usefulness of this method, we will show some applications, for examples thin -wall cylinders and hemispherical shells, and compare the experimental results to analyze the dimensional accuracy of typical parts of the structures.