본 연구는 몇가지 전처리제 및 보존용액 처리가 국내 육성 절화 프리지아 ‘Gold Rich’의 수확후 절화수명과 개화 품질에 미치는 영향을 구명하고자 수행하였다. 10% sucrose, 200mg･L-1 Al2(SO4)3, 200mg･L-1 GA3, 150mg･L-1 citric acid가 혼용된 전처리 용액에서 절화 관상 기간 동안 수분 흡수량과 생체중은 유의적으로 증가한 것으로 조사되었지만 절화수명에는 큰 영향을 미치지 않았다. 보존용액으로 5% sucrose와 살균제인 300mg･L-1 8-HQ를 혼용 처리하였을 때 절화수명 연장(1일 이상), 높은 개화율(82.3~89.1%) 및 만개율(71.5~84.2%) 등의 개화 품질이 향상되었다. 이러한 결과들을 통해 10% sucrose, 200mg･L-1 Al2(SO4)3, 200mg･L-1 GA3, 150mg･L-1 citric acid를 혼합한 전처리제와 5% sucrose, 300mg･L-1 8-HQ를 혼합한 보존용액 처리는 절화수명 연장, 개화율 및 만개율 증가에 효과적일 것이라고 판단된다. 특히, sucrose가 포함된 보존용액은 절화 프리지아 ‘Gold Rich’ 의 상품성 향상에 있어 매우 유용할 것이다.

This study is to investigate the improvement of quality and cost reduction of welding materials for combat vehicles through localization. The existing imported welding wires and localized welding wires were evaluated. The evaluation of the welding wires was performed for the feedability, chemical/mechanical properties, macro testing, and weldability. As a result of evaluation, the localized welding material met all the evaluation standard values. In addition, it showed excellent performance in terms of weldability and feedability. It is judged that the welding quality is improved thanks to the improvement of feeding characteristics through the localization of the welding material, and the fatigue of the worker is also expected to be relieved.

Worldwide plant market keeps maintaining steady growth rate and along with this trend, domestic plant market and its contractors also maintain such growing tendency. However, in spite of its external growth, win-win growth of domestic material industry that occupies the biggest share in plant industry cost portion is extremely marginal in reality. Domestic plant material suppliers are required to increase awareness of domestic material brand by securing quality and reliability of international standard through improvement of design quality superior to that of overseas material suppliers. Improvement of design quality of plant material becomes an essential element, not an option, for survival of domestic plant industry and its suppliers. Under this background, in this study, priority and importance by each evaluation index was analyzed by materializing plant design stage through survey of experts and defining evaluation index by each design stage and based on this analysis result, evaluation index of stage-gate based decision-making process that may improve design quality of plant material was suggested. It is considered that by utilizing evaluation index of stage-gate based decision-making process being suggested in this study, effective and efficient decision-making of project decision-makers would be enabled and it would be contributory to improve design quality of plant material.

최근 식품 소비패턴 변화로 과실 무게 2~3kg 내외의 소형과 수박에 대한 관심과 이용이 증가하는 추세이다. 호박 대목을 이용한 수박 접목재배는 덩굴쪼김병 등 토 양 전염성 병 관리에 유용하나, 왕성한 생육으로 과실 품질이 저하하는 문제가 제기되고 있다. 본 연구에서는 덩굴쪼김병 저항성 수박 공대를 이용한 접목재배시 소형과 수박의 생육 및 착과 특성, 과실의 품질을 검토하였다. 덩굴쪼김병에 저항성이 있는 것으로 평가된 야생종 수박 5종(Galactica, IT 208441, PI 482322, PI 500303, PI 593358)을 대목으로 이용하여, 편엽합접으로 접목한 뒤 비닐하우스에서 재배, 수확하여 생육과 과실 품질을 조사하였다. 접수는 소과형 전용 수박품종 ‘미니스타’를 이용하였으며, 시판 대목 참박 ‘불로장생’과 호박 ‘신토 좌’을 대조로 비교하였다. 수박 대목 ‘PI 593358’에 접목한 처리구가 ‘신토좌’ 대목에 접목한 처리구와 함께 우수한 뿌리 발달 등 왕성한 생육을 보이며 빠른 착과가 이루어졌으나, 과실 품질에 있어 ‘total soluble solids(TSS)’ 값과 관능평가 값이 낮았다. 반면 수박 대목 ‘PI 482322’에 접목한 수박의 관능평가 값은 높은 편이었다. 따라서 소형과 수박 접목재배시 야생종 수박 ‘PI 482322’ 등을 대목으로 이용함으로써 안정적인 생육 및 과실 품질 확보가 가능함을 확인할 수 있었다. 검토 된 야생종 수박은 호박 및 박 대목을 대체하는 대목 개발에 활용될 수 있을 것으로 기대된다.

본 연구는 비시장평가법인 조건부가치평가법을 통해 수질개선을 위한 지불용의액을 추정 하였다. 연구 지역은 심각한 수질오염으로 직·간접적인 피해를 입고 있는 베트남의 하노이 To Lich 강 유역이며, To Lich 강 주변의 거주민들을 대상으로 설문조사를 실시하였다. 이중양분선택형 질문을 통해 설문 내용을 디자인하였고, 설문조사를 통해 얻어진 표본으로 이변 량프로빗모형을 사용하였다. 그 결과, 베트남 하노이지역의 거주민이 수질개선을 위하여 연간 지불용의액은 약 VND 202,560원으로 나타났다. 또한 지불용의액에 영향을 주는 중요한 변수는 사회경제적 변수로 나이, 소득으로 나타났고, 거주민의 건강에 대한 관심도 통계적으로 유의한 변수로 나타났다. 본 연구는 하노이의 To Lich 강에 조사 지역을 한정하여 진행하였기 때문에, 연구 지역 범위를 확대시켜 향후 연구가 진행 되어야 할 것이다. 본 연구의 결과는 지속 가능한 수질 관리의 중요성을 강조하며, 추후 베트남 수질 개선 정책에 환경적 편익 정보를 제공하는데 도움을 줄 것으로 기대된다.

We examined the efficacy of various pretreatment solutions on the postharvest longevity and quality of ‘Hessa’ cut spray roses (Rosa hybrida L.) to develop an inexpensive and innocuous preservative solution for the cut flower industry. Cut flowers were pretreated with 4 preservatives for 10 hours: Scutellaria baicalensis Georgi extract (SC) at 300 μL·L-1, hydrosol (H), S. baicalensis Georgi extract 300 μL·L-1 + sucrose 1% (SC + Suc), and H + sucrose 1% (H + Suc). The results showed that pretreatment with all the solutions except H + Suc improved the postharvest longevity and extended the longevity of cut rose flowers. We found that 300 μL·L-1 of SC was the most effective preservative, which significantly prolonged the postharvest longevity in cut flowers from 9.7 days (control) to 14.1 days. The beneficial effects of 300 μL·L-1 SC pretreatment were associated with inhibition of bacterial accumulation at the basal portion of cut stems, enhanced water uptake, improved fresh weight, and a positive water balance. SC also effectively maintained chlorophyll fluorescence ratios in the leaves and reduced water stress in cut roses. The results demonstrate the potential of SC as an alternative preservative in the cut rose flower industry.

The environmental changes in the Korean cosmetic medical service industry in the 21st century are forming intense competition among medical institutions due to the quantitative expansion of its market. For stable growth of the cosmetic medical service industry, continuous quality improvement is necessary based on empirical research on the quality of cosmetic medical services rather than external expansion. The purpose of this study is to classify the quality attributes of cosmetic medical service using Kano model and to derive the degree of satisfaction and dissatisfaction of each quality attributes through Customer Satisfaction Coefficient (CSC). Through this, the study identified strategic priorities and suggested specific step-by-step approaches and quality improvement priorities that can increase customer satisfaction using the Potential Customer Satisfaction Improvement Index (PCSI Index). Based on SERVPERF, this study used measurement tools consisting of five dimensions : tangibles, reliability, responsiveness, assurance, and empathy. In addition, it was used of measurement items reconstructed into positive, negative, and satisfaction questions for Kano model analysis, CSC analysis, and PCSI Index analysis. A total of 300 medical consumers who experienced cosmetic medical services for the past one year in medical institutions such as plastic surgery and dermatology were collected with convenient sampling. As a result, urgent items for improving the quality of service using the PCSI Index, ‘Consideration for customer benefits’ in empathy category was followed by ‘Immediate help’ and ‘Sincere response’ in responsiveness category, and ‘Understanding customer needs’ in empathy category, respectively. That is, it is required to improve human service quality attributes such as empathy and responsiveness rather than physical service quality attributes. This study contributes practically in that it provides specific and discriminatory approaches to improve customer satisfaction on cosmetic medical service quality and suggests improvement priorities.

The objective of this study was to investigate the effect of shoe dust on the indoor environment, and the effectiveness of shoe dust control on indoor air quality. Test dust was resuspended to reach a mass concentration of particles (2.5-10 μm size) more than 3 times compared to background level, and 1.5 times for particles less than 1 μm in size. The shoes, which were used for actual walking purposes in the outdoor environment, increased indoor PM10 concentration by 118±9%. The removal of shoe dust by water washing and mechanical suction brought about an improvement of indoor air quality. In particular, in circumstances where 27 people walked for one hour into the indoor environment, the mechanical suction of shoe dust decreased PM10 concentration by about 17% (based on the mass balance analysis).

간장게장은 우리나라 전통 식품 중의 하나로 생 꽃게를 세척한 후 간장소스를 첨가하고 저온에서 숙성시켜 포장 하여 상업적으로 판매하고 있다. 하지만, 간장게장 제조 특성 상 열처리를 하지 않기 때문에, 간장게장의 미생물학적 품질을 유지하는데 어려움이 따른다. 따라서 본 연구에서는 원물 꽃게의 초기 미생물 저감화를 위해 여러 살균세척제의 효능을 비교하고 저장 중 간장게장 제품의 미생물학적 품질을 유지하기 위해 키토산의 항균 효능을 평가하였다. 먼저, 상온에서 생 꽃게를 염소수(50 mg/L), 과초산(40 mg/L), acetic acid (5%), lactic acid(5%)에 각각 10분간 침지시켜 일반세균수를 분석하였다. 결과를 살펴보면, 여러 살균세척제 중 5% acetic acid 세척이 생 꽃게에 존재하는 일반세균수를 약 1.5 log CFU/g까지 감소시켜 가장 효과적인 것으로 나타났다. 키토산 효능을 평가하기 위해 현재 상업적으로 제조되고 있는 간장게장(방법 1; 전해수 세척), 5% acetic acid로만 세척된 꽃게(방법 2), 5% acetic acid로 세척된 꽃게에 0.5%(방법 3)와 1%(방법 4)의 수용성 키토산이 첨가된 간장으로 제조된 간장게장을 각각 4oC와 12oC에서 최대 30일까지 저장하면서 일반세균수, 대장균군 및 대장균수를 측정하였다. 12oC에서 저장된 간장게장의 일반세균 수는 7일이 지났을 때 약 8 log CFU/g까지 증가하였다. 4oC의 경우, 1% 키토산이 첨가된 군(방법 4)에서 20 일 동안 약 2.9 log CFU/g까지만 증가한 것으로 나타나 키 토산 무첨가군(방법 1과2)과 0.5% 첨가군(방법 3)(4.2~4.5 log CFU/g)에 비하여 훨씬 효과적이었다. 본 결과에 따라, 생 꽃게를 5% acetic acid로 세척한 후 간장게장에 1% 키토산을 첨가하여 냉장온도에서 저장한다면 간장게장 제품의 미생물학적 품질 향상에 큰 도움이 될 것으로 여겨진다.

Among service industries of knowledge based economic era, the roles of educational service field are becoming more important and standard of educational service makes a direct effect on economic development and social growth. Therefore, accurate measurement of service quality is the most important assignment and the measurement of the service quality remains difficult assignment. So, this researcher classified quality attributes applying weighted value and found potential satisfaction level(PSL) and potential customer demand improvement index(PCDI) for trainees participating in national manpower business so as to suggest measurement of service quality and easiness of use and then, calculated satisfaction position and opportunity cost by quality factor with Taguchi’s loss fraction. And, improvable satisfaction level was measured, opportunity cost by degree of customer dissatisfaction was quantitatively measured, and a model that can indicate with economic factors was suggested. In addition, methodology of measuring quality cost that can be reduced by quality improvement and direction of strategic decision-making for deciding items to be improved preferentially were suggested with qualitative index that can indicate the degree of customers’ dissatisfaction by loss.

In South Korea, low fertility rate has become a big social issue, making the term ‘ultra low fertility rate’ common. Currently, South Korea, like many other leading industrialized countries, is coping with the problem of low fertility with a focus on the work-life balance policy. Unfortunately, South Korea’s work-life balance policy has been criticized as not so successful. Especially, it has been pointed out that the policy effects are being compromised because ‘it is not because there is no system, but the existing system does not work properly.’ This means that work-life balance policy in South Korea has a structural and fundamental problem. In this regard, it is necessary to reflect on policy discourses and instruments that determine the goals, directions and content of the policy. The result of the analysis in this paper reveals that South Korea’s work-life balance policy consists of the discourse of ‘raising the fertility rate’ and its policy instruments. It mobilizes citizens for the national goals of social reproduction and sustainable growth. It could be said that this reversal of purpose and means was because the policy makers and executives were buried in developmentalist thinking―in pursuit of materialistic social development. In this respect, in order for South Korea’s work-life balance policy to be on its way, it is urgently required that it should shift its policy paradigm to change practices and cultures. This paper argues that such a paradigm shift should be based on a ‘Social Quality Approach’. Only when we pursue humanistic social development in the planning and implementation of policies and continue to monitor and supplement related systems under this stance, can we achieve a stable and effective work-life balance policy.

A steering knuckle for a car is a key part of a corner module and is a functional part connected to steering, suspension, and braking devices. Steering knuckles are used for various types of forging and machining methods such as casting forging, aluminum forging, etc. to perform productivity and quality. Therefore, in this study, we study about the development of the overall design of the steering knuckle in the production and supply of the steering knuckle for the product processing method, quality, assembly inspection, etc. through the modeling and analysis of the steering knuckle.

Along with industrial development, various architectural structures have become bigger and higher, leading to an expansion in the size and capacity of construction equipment. And with the development of public transportation, the use of subways as a means of transportation in the city center is increasing, so that vibrations and structural noises are emerging as a new environmental issue. Considering that architectural structures may be used from several decades to hundreds of years after the time of construction, they can be seen as semi-permanent. Due to changes in the vibration-proof polyurethane mats installed in the foundation of these structures, settling may occur and vibration reduction may become inadequate. Therefore, in view of service life, it is necessary to have a high-level standard of reliability and stability. In accordance with this, the Floating Floor System, which uses soft polyurethane foam and can be constructed within a relatively short period of time, has excellent vibration resistant characteristics. It is presented as a great alternative solution to the issue of vibrations caused by subways, railways and building structures. At present, vibration-proof polyurethane mats have been developed up to the same product level as in other advanced countries. However, in the construction of structure foundations, the physical properties of this product and its shape incur changes. If they are installed as such in the structure of a building, it may cause significant impact on stability, requiring that this cause be urgently identified and improved.

Aspergillus luchuensis 34-1 was inoculated into wheat pellets with different conditions of raw materials to produce nuruk. The degree of substrate reactivity improvement of steam treated raw materials compared with that of non-heat treated was analyzed. The water content of the pellet was adjusted to 25% and 35%, and steam treatment for 10 minutes improved the substrate reactivity at 2.1-fold and 3.1-fold, and sterilization was also possible. The characteristics of improvement pellet nuruk were investigated according to the degree of crushing and water content of raw materials according to the temperatures and humidities (23°C, 30°C and RH 60%, RH 80%). The pH of the pellet nuruk was higher depending on the temperature, humidity and moisture content of the koji were lower, and the pH of the flour-pellet nuruk was lower than that of 2 mm milling wheat-pellet nuruk according to milling degree. It can be seen that the milling degree affects the growth of mold. The acidity and amino acid were generally higher as fermentation time increased. Also, the higher the incubation temperature, humidity and moisture content, the higher the value. Glucoamylase activity was significantly the highest in moisture content 35% D2b nuruk, cultured at 30 °C and 80% RH for 38 hours. This is higher than the previous reports on glucoamylase of rice-koji or commercial nuruk using fungi isolated from traditional nuruk. From these study, it is expected that making of improvement pellet nuruk would save the fermentation time considerably compared with traditional nuruks.

Accompanied with the industrial development, and enlarging and heightening buildings, building equipments are also enlarging. These changes are serious to the cause of structure noises. The Floating Floor System which uses the soft foam polyurethane are becoming popular in construction areas for its short construction period and well vibration proof ability, hence it is becoming wide in the marketing volume. We were able to enhance the physical characteristics of the vibration proof polyurethane mat with this study. As a result, we were also able to secure material competitiveness by meeting the requirements of customer satisfaction through enhancement in estimated material lifetime and physical characteristics.