본 연구에서는 파일럿 및 상용급 규모에서 UF 분리막을 결합한 혐기성 소화 공정을 장기간 운영하여 분리막의 성능, 소화효율, 바이오가스 생산량과 수질 등의 다양한 인자를 도출하였다. 파일럿 규모에서 막의 투과 플럭스는 15∼20 LMH, 막간 차압은 1∼3 kgf/cm2로 운전되었다. 유입수의 TCOD 와 SCOD 는 각각 113 g/L, 62 g/L 이었고, 유출수의 TCOD 와 SCOD는 UF 공정 이후 제거효 율이 93% 및 86% 로 나타났다. 상용급 규모의 운전 결과, 분리막의 투과 플럭스는 12∼15 LMH로 나타났다. 유입수의 CODcr, TS, VS는 각각 236 g/L, 62.5 g/L, 50.2 g/L였으며, 농축여과분리막을 통과 후 제거율은 각각 99%, 94% 및 98%로 조사되었다.

Domestic fishing villages' net profit has consistently dropped down in recently, and currently it is down to 16.4%.This paper develop and increase fishing profit as this project will decrease 20% of the operation cost and eventually vitalize the fishing villages' economy. Especially, it could be an alternative solution to the constant requests of WTO (World Trade Organization) and UN ECOSOC (UN Economic and Social Council) to stop cross subsidization of marine products. IMO (International Maritime Organization) is concerned about air pollution caused by carbon dioxide production, and it strongly suggests on decreasing carbon dioxide discharge level. This paper will help protect ocean ecology as it will not only decrease various types of oil usage but also promote alternative technology solution. Also Increase business' profit by selling ocean and other related business parts and factors. Low speed electric car applies high performance level of motor and motor control devices. Among those, about 20% is the original cost of motor and motor control devices. Therefor entering low speed electric car market, parts sales and sales will increase.

Companies are reluctant to disclose information because of trade secret and corporate identity For the same reasons, logistics companies do not want to operate in the form of a community In urban areas, the loading of vehicles is 100% as the quantity of goods transported is too much. In mountain areas, however, the load condition of the vehicle is not 100% because of the low quantity of goods transported Therefore, the transportation costs will increase as the cost of transport increase, the competitiveness of firms will also decline In this paper, we studied a simulation to measure driving time and volume of cargo according to the change of the quantity of goods transported in the mountain area According to the research results, we got a conclusion that the proposed method makes the operation time be less and the volume of cargo increase compared with the existing operation method

This study introduces the comparison of efficiency levels of photovoltaics systems by analyzing various installation systems of photovoltaics systems and optimization techniques and proposes a system using techniques In this study, the generation time and power generation of two types of photovoltaic power generation system were measured and compared. Comparing the monthly power generation time with the power generation amount, it is found that there are many fixed variable photovoltaic power generation systems with a large average daily power generation time of 0.8h and an average power generation capacity of 2,871kw from November to December. Total Fixed Variable Total Daily Power Generation Time 2.4h The power generation amount is 23,184kw, showing a large amount of electric power generation.

Warpage of injection molded product is caused by non-uniform shrinkage and residual stress. A method of removing uneven molding shrinkage and residual stress is to remove the defective factor to Uniform cooling of products. Warpages for part designs have been investigated in this study according to the injection molding conditions for amorphous ABS and crystalline PP by the rapid cooling and heating system. Experimental results showed that the crystalline resin was more warped than amorphous resin, Warpages have been observed in the regions of the part, near gate region and flow direction region.

중·저준위 방사성폐기물 처분시설의 운영 중 사고로 인한 방사선적 영향을 평가하기 위해서는 운영 중 발생 가능한 사고 에 대한 타당성이 입증되어야 한다. 본 논문에서는 처분시설의 운영 중 사고분석 체계를 처분시설의 구성요소에 대한 안전 기능분석, 잠재위험요소분석, 위험도분석, 그리고 향후 조치대안으로 사고평가체계를 개선하였다. 이를 위하여 위험도분석 에 필요한 설계대안과 관리대안을 추가하여 설계-운영-평가가 연계되도록 하였다. 또한 운영 중 사고의 발생확률과 평가결 과의 심각성에 따라 운영중 사고에 대한 분류기준을 제안하여 처분시설 운영 중 대표 사고시나리오에 대한 정당성을 확보 하였다. 본 논문의 개선된 평가체계를 우리나라의 2단계 중·저준위 방사성폐기물 표층처분시설에 대한 처분시설 운영 중 사고분석의 사례에 대해 적용하였다.

The business process of global third party logistics company is defined as a network of logistics activities which involves the products that are manufactured in the developing countries, such as Vietnam, China and so on, and delivered to North or South American countries via intermediate stopover sites. The third party logistics company usually uses proprietary logistics information system to support the related logistics activities. However, each consignor sometimes may require different business process based on the customer type or characteristics of their products. Therefore, the third party logistics company need to modify their business process to reflect customer’s requirements, resulting in the modification of logistic information systems and additional costs. Therefore, a flexible mechanism is required to efficiently support the various types of requirements by the owners of the products. In this paper, first, we figured out various business rules related to third party global logistics activities. Second, we grouped the identified business rules into business processes, objects, relations, dependency, policy, representations, execution, and resources and further into precondition, postcondition, and invariant based on checking point in time. Furthermore, the categorized rules are classified into inter-activity and intra-activity rules based on the execution range. Third, we proposed a rule syntax to describe the defined rules into scripts which are understood by user and information system together. When each activity is executed, the rule manager checks whether there are rules related with the activity execution. Finally, we developed a prototype rule management system to show the feasibility of our proposed methodology and to validate it with an example.

MBR(membrane bioreactor)공정에서 막 오염이 진행되면 막간차압압력(TMP, transmembrane pressure)가 증가한다. 일반적으로는 막분리 공정에서 운전/휴지(F/R, Filtration/Relaxation) 방식을 적용하여 TMP의 증가를 억제하고 있다. 본 연구에서는 활성 슬러지 용액과 밀도가 유사한 구형 비드를 제작하여 MBR 하부에서 산기되는 공기와 함께 자연적으로 순환되도록 하였다. 그리고 이러한 장치의 운전에 따른 막간차압압력의 변화를 운전/휴지 방식 및 사인파형 연속 투과운전(SFCO, Sinusoidal Filtration Continuous Operation)방식을 이용하여 확인하고자 하였다.

The aims: This study aims to elucidate workers’ compensatory accident insurance purchasing behavior, as well as proposing a model to explain the behavioral intentions of front-line workers to purchase compensatory accident insurance. The scope: The workers of the container terminal in the Kaohsiung port were used as the sample in this study. Methodology: A questionnaire survey was administered to collect workers’ perceptions of accident insurance. The analysis methods of EFA, CFA and SEM were employed for further analysis. Conclusions: According to a primary component factor analysis, three dimensions of insurance perception were found: perceived risk; perceived need for accident insurance; and perceived usefulness of accident insurance. The findings indicate that perceived risk, perceived need, and perceived usefulness of accident insurance positively affect the intention to purchase accident insurance. It is also found that perceived need constitutes the major factor affecting the intention of front-line workers to purchase accident insurance. However, perceived need is determined to play both a mediating and modulating role in the insurance behavior evaluation process model.

The purpose of this study is to find methods of enhancing arboretum’s competitiveness and suggest efficient ways in making other arboretum afterwards by grasping decision factors that make people visit an arboretum operating in Korea. For this study it was conducted monova and discriminant analysis, multiple regression analysis. I researched the relationship between satisfaction and visitor’s characteristic, and then found there are some differences only in revisitors, though other factors had nothing to do with results. The satisfaction of facility and tour effect is higher in revisitors compared with first visitors. In the gender aspect, women were satisfied with the distinctive things more highly than men among five lower factors of satisfaction. Also, in the age group aspect, the overall satisfaction and satisfaction in the scenary were ranked higher from 20 to 30 than from 40 to 50. The findings will provide imformation on the satisfaction of the arboretum visitors and enhance arboretum’s competitiveness.