PURPOSES : The number of snowfall and the amount of snowfall are gradually increasing, and due to the characteristics of Seoul, which has a lot of traffic, it is difficult to respond quickly with a snow removal method that relies on snow removal vehicles. Therefore, it is necessary to develop an IoT based eco-friendly snow removal system that can respond to unexpected heavy snow in winter. In this study, the low temperature operation and snow removal performance of the IoT road condition snow removal detector and the snow removal system using CNT and PCM are evaluated in the climatic environment chamber. METHODS : To make artificial snow, it consists of an climatic environment chamber that can simulate a low temperature environment and equipment that can supply compressed air and cold water. Depending on the usage characteristics of the climatic environment chamber, use an air-water type snow maker. In order to make artificial snow, wet temperature, which takes into account the actual air temperature and the amount of moisture in the air, acts as the most important variable and is suitable for making snow, below –1.5 ℃. The lower the water temperature, the easier it is to freeze, so the water source was continuously supplied at 0 ℃ to 4 ℃. One of the two different pipes is connected to the water tank to supply water, and the other pipe is connected to the compressor to supply high-pressure air. Water is dispersed by compressed air in the form of many small droplets. The sprayed microscopic water particles freeze quickly in the low temperature environmental climatic chamber air and naturally fall to the floor, forming snow. Based on the KS C IEC 60068-2-1 cold resistance test standard, an integrated environmental test procedure was prepared to apply to IoT-based snow removal systems and performance evaluation was performed accordingly. The IoT based eco-friendly snow removal system is needed to in winter, so visual check and inspect the operation at the climatic chamber before setting up it to the actual site. In addition, grid type equipment was manufactured for consistent and reliable snow removal performance evaluation under controlled environmental conditions. RESULTS : The IoT-based eco-friendly snow removal system normally carried out the task of acquiring data and images without damaging the appearance or freezing in a low temperature environment. It showed clear snow removal performance in areas where PCM and CNT heating technology were applied to the concrete slab. This experiment shows that normal snow removal tasks can be carried out in low temperature environments in winter. CONCLUSIONS : The integrated environmental test procedures and grid type evaluation equipment are applied to low temperature operation and snow removal performance evaluation of snow removal systems. In the climatic environment chamber, where low temperature environments can be simulated, artificial snow is created regardless of the season to derive quantitative experimental results on snow removal performance. PCM and CNT heating technology showed high snow removal performance. The system is expected to be applied to road site situations to preemptively respond to unexpected heavy snow in winter.

본 연구는 일반농산어촌개발사업의 사업내용 중 하나인 농촌중심지활성화사업으로 준공에 이른 농촌 커뮤니티 시설의 주민조직 직접 운영에 따른 운영성과와 농촌 커뮤니티 시설에 미치는 영향요인을 분석 하여 문제점을 도출하고 개선방안을 제시하는데 목적을 두고 있다. 또한 전라북도 농촌중심지활성화사 업으로 준공에 이른 농촌 커뮤니티 시설 중 주민조직에 의해 운영되고 예산이 비슷하며, 비교가 가능한 부안군 보안면, 김제시 금구면, 임실군 강진면을 대상으로 연구를 진행하였다. 설문지는 배포 후 회수하는 방법으로 수집하였으며, 일반현황과 독립변수의 측정지표에 근거한 리커트 7점 척도를 통해 분석한 결과는 다음과 같다. 설문결과는 설문에 대한 응답자의 일반현황, 빈도, 백분율 분석, 측정 문항의 신뢰 도 분석을 위해 크론바흐의 알파 값 계수법 분석, 세부 측정지표별 설문조사 분석, 연구가설 검증을 위한 다중회귀분석, 세부 운영성과의 차이를 분석하기 위한 일원배치 분산분석과 사후검정을 실시하였다. 연구가설과 리커트 7점 척도를 통한 연구의 결론은 측정문항의 신뢰성이 인정되었으며, 농촌 커뮤니티 시설의 주민조직 직접 운영은 시설의 운영성과에 영향을 미치고 있다. 성공적인 운영과 운영성과를 제 고 및 개선하기 위해서는 다양한 계층들의 이용에 있어 편리하도록 환경관리 및 시설의 설비에 최선의 노력을 기울여야 한다. 또한 시설 운영의 주체인 주민조직의 기능을 강화하여 지역의 공동체 교류공간 이 되도록 주민조직과 지역주민이 직접 관심을 가지고 참여하여 주민조직만의 공간을 확보하는 것이 중요하다. 이 연구를 통해 시설의 편리성과 개발의 유연성을 유지하여 다양한 계층의 주민들이 이용함 으로써 운영성과를 높일 수 있는 요인이 된다. 다양한 운영 주체 중 주민조직 직접 운영을 통한 주민들의 역량 강화 및 지역사회 발전과 공동체 의식을 공고히 할 수 있는 발판이 마련될 것이다.

Korea Atomic Energy Research Institute’s Post Irradiated Examination Facility safely stores spent nuclear fuel using a wet storage method to conduct research. Here, in order to remove the radioactivity released into the water, the stored water is passed through an ion exchange resin tower, and the radionuclides are exchanged with the bead-shaped ion exchange resin filled inside to lower the radioactivity concentration. At this time, because the stored water passes in one direction, clogging of the ion exchange resin occurs. If this phenomenon continues, the flow rate of the water treatment process decreases and operation efficiency decreases, so a backwashing process is necessary to re-mix the ion exchange resin and secure the flow rate again. In this study, the flow rate reduction trend according to the lifespan of the ion exchange resin and the flow rate recovery according to the backwash process operation amount were analyzed. The flow rate reduction trend of the ion exchange process was analyzed immediately after the backwashing process was started. In addition, the amount of flow recovery according to the backwash process operation amount was evaluated by the amount of waste generated during the backwash process and the number of days of operation until the backwash process was needed again. As a result, the flow rate of the ion exchange process decreased rapidly right after the backwash process until the position of the ion exchange resins was stabilized, and then stabilized. After that, it gradually decreased and reached the point where the backwash process was necessary. However, the decline trend was analyzed to be the same regardless of the lifespan of the ion exchange resin. In addition, the amount of waste generated during the operation of the backwash process was increased in the order of 400 L, 600 L, 1,100 L, 1,400 L, 3,500 L, and 4,200 L to increase the amount of operation of the backwash process. As a result, the number of days of ion exchange resin operation was 285 days, 338 days, and 342 days, was analyzed as 422 days, 322 days, and 720 days. Based on this study, it was confirmed that the flow rate reduction trend is the same regardless of the lifespan of the ion exchange resin, and as the backwash process operation increases, the number of days the ion exchange process can be operated increases, but there is a turning point where the waste treatment cost exceeds the number of days of operation.

Complaints about foul odors are emerging as an issue, and the number of complaints is steadily increasing every year. Biofiltration is known to remove harmful or odorous substances from the atmosphere by using microorganisms, and full-scale biofilters are being installed and operated in various environmental and industrial facilities. In this study, the current status and actual odor removal efficiency of full-scale biofilters installed in publicly owned treatment facilities such as sewage, manure, and livestock manure treatment plants were investigated. In addition, the effects of design and operating factors on their efficiency were also examined. As a result, it was found that odor prevention facilities with less than 30% odor removal efficiency based on complex odors accounted for 40%-50% of the biofilters investigated. In investigating the appropriate level of operating factors on odor removal efficiency, it was found that compliance with the recommended values p lays a significant role in improving odor removal efficiency. In the canonical correlation analysis for the on-site biofilter operation and design data, residence time and humidity were found to be the most critical factors. The on-site biofilter operation and design data were analyzed through canonical correlation analysis, and the residence time and humidity maintenance were found to be the most important factors in the design and operations of the biofilter. Based on these results, it is necessary to improve the odor removal efficiency of on-site biofilters by reviewing the effectiveness of the operation factors, improving devices, and adjusting operating methods.

In this paper, we break away from the method of removing and inspecting the GDI injector, measure the pressure change of the fuel rail pressure sensor when driving the GDI injector of a vehicle equipped with the GDI fuel system, and compare the results. analyzed.There was a pressure change in the fuel rail pressure sensor from the general drive GDI injector. There was no pressure change in the fuel rail pressure sensor when driving the GDI injector without injecting fuel. You can check the fuel injection status in the pressure change data of the fuel rail pressure sensor without removal the GDI injector.

The 37 indicators for performance evaluation of public sewage management agencies are divided into four major categories (agency manpower management ability, wastewater treatment plant operation and management, sludge and water reuse, service quality) in the first stage, and the necessity and score acquisition for the detailed indicators by each major category in the second stages. Priority was investigated through the Analytic Hierarchy Process (AHP) analysis technique for ease and relevance of company efforts. Also, based on the results of this analysis, integrated type weighting and relative importance were analyzed. As a result of the analysis, the weight and relative importance of the first stage classification were in the order of wastewater treatment plant operation and maintenance, operation agency manpower management ability, sludge and water reuse, and service quality. As a result of analyzing the weights and priorities of the detailed performance indicators in the second stage, it was found that operator’s career years, the percentage of certification holding rate in operators, compliance with the effluent water quality standards, training times for operators, and efforts to manage hazardous chemicals were important. Some of the indicators of operation agency performance evaluation may include indicators in which the performance of the company's efforts is underestimated or overestimated. In order to improve this, it is necessary to give weights in consideration of the necessity of the indicator, the relevance of the company's efforts, and the ease of obtaining scores.

Cooling operation characteristics of multi-A/C(air conditioner)s were experimentally investigated for combination of indoor units (A+B, A+C, B+C) and operating conditions (standard, overload, low temperature and low temperature freezing). The operating data and performance of the air conditioner were measured using a multi-calorimeter. We also observed compressor frequency and pressure variations. From the experimental results, it was found that the cooling performance and the operating characteristics depend on operation combination of indoor units, in the case of 2 room simultaneous operation. In the four types of cooling tests, the cooling capacity and COP of the 3 room simultaneous operation and 2 room simultaneous operation were similar. Through this experimental study, data on the simultaneous operation characteristics of 2 room simultaneous operation according to the changes of indoor and outdoor temperature of four kinds were obtained.

Water supply/intake pumps operation use 70~80% of power costs in water treatment plants. In the water treatment plant, seasonal and hourly differential electricity rates are applied, so proper pump scheduling can yield power cost savings. Accordingly, the purpose of this study was to develop an optimal water supply pump scheduling scheme. An optimal operation method of water supply pumps by using genetic algorithm was developed. Also, a method to minimize power cost for water supply pump operation based on pump performance derived from the thermodynamic pump efficiency measurement method was proposed. Water level constraints to provide sufficient disinfection performance in a clearwell and reservoirs were calibrated. In addition, continuous operation time constraints were calibrated to prevent frequent pump switching. As a result of optimization, savings ratios during 7 days in winter and summer were 4.5% and 5.1%, respectively. In this study, the method for optimal water pump operation was developed to secure disinfection performance in the clearwell and to save power cost. It is expected that it will be used as a more advanced optimal water pump operation method through further studies such as water demand forecasting and efficiency according to pump combination.

For economic evaluation of integrated operation to sewage facilities, benefit-cost analysis was performed to watershed sewage works project in 7 watershed areas, 156 facilities. In this study, the cost before and after integrated operation was compared and benefits are calculated from the reduction of operators, increasement treated pollution loads, reduction cost through operation convenience, reduction water consumption through effluent reuse, and improvement of life benefit. The result showed that cost was 8,500million won and benefit was 16,747million won, so benefit was 49% higher than cost. B/C analysis result showed that B/C ratio was 1.97 and it is similar to other researches. The benefits of integrated operation included convenience of data management, increase of emergency response, decrease of complains with sewage which was not reflected numerically, so the benefits of integrated operation were expected much greater than this result.

A self-powered time-temperature indicator (TTI) was optimized to enhance the performance of the TTI by modifying a biofuel cell using different immobilization, redox mediators, and status of electrode. The performance of the TTI was measured by output voltage of the TTI. The enzymes and combinations of lacasse mediators (HBT (1-hydroxybenzotriazole), Rupy (Bis-(bipyridine)-(5-aminophenanthroline) ruthenium bis (hexafluorophosphate)), MB (Methylene blue), SDP (4,4- sulfonyldiphenol)) and glucose oxidase mediators (FA (Ferroceneboxaldehyde), DBQ(2,5-dihydroxybenzoquinone), HQS (8-hydroxyquinoline-5sulfonic acid hydrate), FHFP (Ferrocenium hexafluorophosphate)) were immobilized with stabilizers (pyrrole) on a glassy carbon electrode by electrodeposition by applying a square wave, cross-linking and physical immobilization. MWCNTs were used to modify glassy carbon electrodes. MWCNTs coated electrodes produced higher output voltage than uncoated electrodes. The optimum and stable performance of the self-powered TTI was that the output voltage of 64 mV and duration time was 3hr at 25°C, when the combination of Rupy, MB for laccase mediators and HQS, FHFP for glucose oxidase mediators were immobilized on MWCNTs coated electrodes by applying a square wave method. In the application, the concentrations of enzyme and glucose were adjusted to prolong the shelf-life of TTI at much lower output voltage.

본 연구는 소각시설을 규모별, 유형별로 평가하기 위하여 이행지표를 설정한 후 설문조사를 실시하였다. 설문대상 수는 2012년 기준 전국 184개 중 약 15%인 28개를 선정하였다. 규모별로 대규모 (≥100 t/d), 중규모(50~<100 t/d), 소규모(<50 t/d)로 나누고, 유형별로는 스토커, 열분해, 유동층으로 분류하였다. 이행지표는 기술성, 경제성, 환경성으로 대별한 후 각각 6개, 10개, 30개의 세부항목을 설정 하고 5등급으로 나누어 점수를 부과하였다. 평가결과 소각시설 규모별로는 기술성, 경제성, 환경성 평가 에서 모두 대규모 시설이 소규모 시설 보다 높은 점수를 받았으며, 종합점수에서도 동일한 경향을 나타 내어 소각시설의 규모가 증가할수록 더 높은 평가 점수를 받는 것을 알 수 있었다. 소각시설 유형별로 는 기술성, 경제성, 환경성을 종합 평가한 결과에서 스토커식(65.3점)이 유동상(59.0점) 및 열분해(58.3 점) 보다 우수한 평가결과를 나타내었다. 특히 소각시설 평가시 기술성, 경제성, 환경성 중 경제성에서 뚜렷한 차이를 나타내었다.

본 연구는 시설원예 작물 재배 농가들을 대상으로 응답자들의 항목별 선호도를 분석하고, 농업현장에서 농민들이 체감하는 원예단지에 대한 만족도와 문제점을 파악하고 평가하고자 하였다. 분석 대상은 크게 생산관련 소모품 공동구입, 온실시설 기자재 공동구입, 공동 육묘 생산, 공동 냉난방시설 사용, 공동출하, 토양 검사 및 인증제도를 포함하는 공동 활동부분과 생산기술정보, 온실시설관리정보, 유통관련정보, 생산기술교육, 온실시설관리교육, 유통관련교육을 포함하는 정보교류 및 교육부분으로 나누었다. 공동활동 부분의 IPA분석결과 소모품 공동구입, 기자재 공동구입, 공동출하 항목이 중요도와 만족도가 모두 높아 지속적인 유지가 필요하며, 공동육묘 생산, 공동냉난방 시설 등 2개 항목은 중요도와 만족도가 모두 낮아 우선순위를 낮추어도 될 것으로 판단된다. 소모품 및 기자재 공동구입에 대한 단지별 생산자 니즈를 파악하고, 원예전문생산단지가 수출집중형인 경우에는 공동출하 체계를 적극 활용해 수출대상국별 경쟁력 있는 교섭권을 더욱 강화해 나가야 할 것이다. 한편, 육묘장과 냉난방시설의 경우, 정부지원을 받아 시설을 소유하고 있는 비율이 높기 때문에 중요도-만족도가 낮은 것으로 판단된다. 그러나 CO2 저감을 위한 환경친화적 신재생 에너지의 활용 및 지속가능한 농업의 관점에서 고찰해보면, 에너지 이용 효율성 제고 및 환경 친화적 원예단지 조성이 중요한 부분이라는 것을 인지해야 할 것이다. 또한, 토양 검증 및 인증 항목은 중요도에 비해 만족도가 높아 과잉관리가 개선될 필요성이 있는 것으로 나타났다. 이러한 결과는 원예전문생산단지 평가 지표에서 가점을 주는 평가항목들이기 때문에 이미 잘 관리가 되고 있는 것으로 설명할 수 있다. 정보교류 및 교육부문의 IPA분석결과 가장 집중적으로 관리되어야 할 요인으로 생산기술 교육이었으며, 원예전문단지교육을 실시하기 위해서는 생산기술 교육을 타 교육(온실관리 및 유통관련 교육) 보다 집중적으로 실시해야할 부분으로 평가할 수 있다. 생산기술 정보, 온실시설 관리정보, 유통관련 정보는 중요도와 만족도가 모두 높아 지속적으로 잘 유지해야 할 필요가 있는 요인들이다. 다양한 정보에 대한 응답자들의 중요도와 만족도가 높기 때문에, 농가들의 적극적인 정보 교류를 활성화 시키는 방안을 제시할 수 있을 것이다. 예를 들면, 구성원들의 정보교류 어플리케이션, SNS 활동 혹은 홈페이지 활용, 공식적인 정기모임 및 정보교류 회의를 위한 협의체를 구성 등을 들 수 있겠다. 온실관리 교육, 유통관련 교육의 2개 요인에 대해서는 우선순위를 낮추어도 좋은 것으로 판단된다. 마지막으로 생산성 향상 및 시설원예의 경쟁력 강화를 위해 정부 주도의 시설원예단지 규모는 더욱 확대될 것이므로, 본 연구의 결과가 원예전문생산단지의 운영에 효율적으로 적용되기를 기대한다.

For the sustainable development, companies are making a lot of efforts such as activities of sales increase and cost reduction. Among these, efforts to use limited resources efficiently and effectively is still being made steadily. And many methods for management innovation are being introduced and used. However there were partial or temporary effects only. So there are not enough to achieve operations performance to cover the entire system. Therefore, in order to maximize performance or to improve sustainability across the companies, it is necessary to rebuild the existing system with process perspective not with existing functional perspective. This study was performed to achieve the objective that is operation performance improvement of certification body. So literature review was researched and analyed about the process innovation and the process approach. And basic model which is compatible with ISO/IEC 17021 requirement for the certification body was established in this study. Based on this model, one of the certification body was selected and operation system for this organization was established, documented and implemented through the process approach method. In the result, operations performance of certification body on the side of efficiency and effectiveness is analyzed and the effect of reconstruction of system on operations performance was figu

소프트왜어 산업진흥볍 개정으로，공공부문 정보화 시장에 대기업 사업 참여가 제한되고 중소기업의 사업 참여가 증가될 것으로 예상된다. 이에 중소기업의 프로젝트 통합관리 및 소프트혜어 품질관리의 취약 부분을 보완하기 위한 조처로 PMO 제도를 법제화 하여，제도적，조직적 프로젝트관리를 통한 IS프로젝트의 성과를 향상을 하려는 것이다. IS 프로젝트 관리영역에 관련된 PMO에 대한 이론적 연구와 PMBOK 9 개 관리영역 중 3 개 핵심관리 영역 연관성 분석을 통해 PMO 업무 핵심 관리능력인 PMO 기능을 정의하였다. 또한 프로젝트 성과 및 영향 요인은 이론적 연구를 통해 성과 영향 요소 및 성과요소를 정의하였다. 제시한 연구모델의 실증적 검증은 공공부분 발주자，사업수행자，감리원을 대상으로 설문조사를 통하여 프로젝트의 성과 향상에 영향을 주는 PMO 활동의 기능 및 PMO운영 형태 상호관계를 실증적으로 검증하고자 연구모델을 수립한다.

침지식 막결합형 연속회분식 생물반응기에서 폐수의 도입단계가 제거효율과 여과성능에 미치는 영향을 조사하였다. 호기성 단계의 초기에 공급할 경우(Mode-1)와 무산소 단계의 초기에 공급할 경우(Mode-2)에 대하여 89일 동안 동시에 운전하였다. COD 제거효율과 여과성능은 2가지 운전방식 간에 큰 차이가 없었다. 그러나 영양염류(총질소와 총인)의 제거효율에 있어서 Mode-2가 Mode-1에 비해 보다 효과적이었다. Mode-2의 경우 COD, 총질소 및 총인의 제거율은 각각 99.1, 73.3 및 77.7%이었다.

본 연구는 온실 운영에 필요한 전력량을 확보함으로서 온실경영비 절감을 목적으로 우선 태양광발전시스템을 온실의 인접한 건물의 옥상에 설치하여 기상상태에 따른 발전량을 실험적으로 검토하였다. 연구결과를 요약하면 다음과 같다. 실험기간 동안 최고, 평균 및 최저온도는 각각 0.4~34.1, -6.1~22.2 및 -14.1~16.7℃ 정도의 범위에 있었다. 그리고 일사량의 경우, 최대, 평균 및 최저값은 각각 28.8MJ·m-2, 14.9MJ·m-2 및 0.6MJ·m-2 정도였고, 전력은 일사량에 비례해서 증가하지 않고 약 750W 전후에서 거의 일정한 것을 알 수 있었다. 일일 최대, 평균 및 최소 소비전력량은 각각 약 5.2kWh, 2.5kWh및 0kWh정도였다. 본 실험에 사용된 시스템의 평균 소비전력량을 기준으로 보면, 온풍기의 용량 및 작동시간이 작은 경우는 충분하지만 큰 경우는 부족한 것으로 나타났다. 온풍기의 용량이 큰 경우, 어레이 면적이 현재의 약 3배인 약 21m2 정도이면 평균 전력량으로 충분할 것으로 판단되었다. 물론 어레이의 온도가 높아지는 한 여름철에는 일사량에 비례해서 발생 전력이 증가하지 않은 것으로 나타났지만, 현재까지 실험결과로 보면, 두 인자간에 상관계수가 0.84 정도로 상관관계가 높은 것으로 나타났다.

Many corporations are accepting various kinds of business reform techniques to be adapted and overcome in this e-Business period. Among these techniques, team-organization is selected most in person/organization field. The introduction of team-organization is more needed and spread, so many corporations actually constructed team-organization formation form. But the result has not been active. Therefore after team-organization is introduced to improve the performance evaluation of team management, the result of team management performance should be correctly measured to find out and settle the problems of team-organization. The purpose of this research presents the development of the model of team-management performance evaluation and the method of the proper measurement based on BSC.

As the basic study about improvement of yellow croaker drift gill net fishing implement and development of the fishing system, this study drew problem after synthetically analyzing hauling system of yellow croaker drift gill net used in the coast of Chuja Island and tested several characters and analyzed in hauling process with 5 step net hauler model for improving the problem. The analysis results are as follows. When the angle between axises of drum centers was small, it showed the tendency that hauling time was fast. Hauling time was faster when drum was 5 step rather than 3 step. When drum was 5 step, slippery phenomenon was small and hauling was stable. Tension was larger when drum was 5 step rather than 3 step. When drum was 5 step, the range of change of the maximum and minimum value was small and hauling was stable. When drum was 3 step, there was following formula between hauling time (Ht3) and angle between axises of drum centers (Ag) Ht3 : (7.15Hs-0.81) Ag-0.81, when drum was 5 step there was following formula.Ht5 : (6.45Hs-0.75) Ag0.10, here, Hs is hauling speed. When drum was 3 step and hauling speed was 28cm/sec, tension was T=0.08A83-1.60Ag3-0.49Ag+369.56(r=0.99), when drum was 5 step, tension was, T=-0.01Ag3+1.96Ag2-34.05Ag+414.58 (r-0.99), here, T was tension(g).