본 연구는 변화하는 도시 및 환경 문제, 기후변화 문제에 대응하기 위한 방법 중 하나인 바람길숲 조성과 관련하여 바람길숲의 실효성을 높이기 위한 제도화 방안 및 부처별 연계 방안을 제안하였다. 이를 위해 바람길 관련 용어를 포함하고 있는 법·제도를 검토하여 관련 계획 내에서 요구되는 바람길의 역할 및 상호관계를 파악하였으며, 바람길숲 관련 상위계획 및 바람길숲 기본계획에 대한 검토를 통해 현재 조성되고 있는 바람길숲의 문제점을 파악하여 바람길숲 관련 주요 쟁점을 도출하였다. 이러한 결과를 바탕으로 바람길숲 활성화를 위한 제도화 방안은 크게 바람길숲 법제화를 위한 제도화 방안과 바람길숲의 실효성 있는 활성화를 위한 제도화 방안으로 나누어 법률 정비 및 보완 사항을 제안하였 다. 먼저 바람길숲 법제화를 위한 제도화 방안으로는 1)용어의 정립 및 법적·제도적 근거 마련, 2)관련 계획과의 위계 정립 및 바람길숲 기본계획의 법적 근거 마련 방안을 제시하였으며, 바람길숲의 실효성 있는 활성화를 위한 제도화 방안으로는 1)지도화 된 공간자료 구축에 대한 법‧제도적 근거 마련 방안, 2)바람길숲 기본계획 수립지침 및 바림길숲 조성‧관리 가이드라인 마련의 필요성과 그 내용적 범위 등에 대해 제안하였다. 본 연구자료는 바람길숲 관련 법·제도 마련을 위한 기초자료로 활용될 수 있을 것으로 기대되며, 바람길숲 기본계획의 제도화 연구에 활용될 수 있을 것으로 판단된다. 또한 체계적인 바람길숲 조성과 관련하여 기초자료로 활용될 수 있기를 기대한다.

The recent increase in earthquake activities has highlighted the importance of seismic performance evaluation for civil infrastructures. In particular, the container crane essential to maintaining the national logistics system with port operation requires an exact evaluation of its seismic response. Thus, this study aims to assess the seismic vulnerability of container cranes considering their seismic characteristics. The seismic response of the container crane should account for the structural members’ yielding and buckling, as well as the crane wheel’s uplifting derailment in operation. The crane’s yielding and buckling limit states were defined using the stress of crane members based on the load and displacement curve obtained from nonlinear static analysis. The derailment limit state was based on the height of the rail, and nonlinear dynamic analysis was performed to obtain the seismic fragility curves considering defined limit states and seismic characteristics. The yield and derailment probabilities of the crane in the near-fault ground motion were approximately 1.5 to 4.7 and 2.8 to 6.8 times higher, respectively, than those in the far-fault ground motion.

This study was conducted to provide basic data for product development and marketing strategies for the Thai home meal replacement (HMR) market, to reflect the changing trends in household sizes in Thailand. The results of analyzing the characteristics and differences of HMR consumption behavior between single-person households and multi-person households in Thailand were as follows: It was found that single-person households use HMR to save money and for the convenience in cooking and preparation. In the preference by HMR type, multi-person households showed a higher preference for all types of products than single-person households. Thai consumers, regardless of their household size, mainly use department stores and large shopping malls to purchase HMR, and they most prefer to get information through Internet advertisements. The shelf life, quality, taste, hygiene, and freshness of HMR were the main considerations for their selection. Based on the results of this study, the Thai market requires the development of HMR products that are reasonable in terms of cost and preparation time. In addition, it is necessary to develop products that can satisfy consumer needs, such as nutritional enhancement and therapeutic foods, products that are organic, eco-friendly, cater to various menus, and address the premium segment.

When compact HVAC is applied to a building, various variables exist in performing the functions of air conditioning, ventilation, and hot water supply of the building, and various experimental and empirical evaluations according to the energy performance evaluation method of the building occur. We are going to present research data for preparing domestic evaluation standards for energy evaluation methods for compact HVAC and zero-energy buildings to be applied in the future.

Purpose: This study compares the chest compression quality, and the willingness and confidence to perform cardiopulmonary resuscitation (CPR) before and after education between the compression only CPR (COCPR) group and the standard CPR (STCPR) group using manikins. Method: This study employs a randomized controlled trial design. A total of 219 and 214 individuals were randomly assigned to the COCPR and STCPR groups, respectively. Both groups were asked to perform CPR for 2 min before and after education. The willingness and confidence to perform CPR were surveyed through a questionnaire. Results: Before education, the STCPR group had a significantly higher mean chest compression depth and accuracy than the COCPR group for the entire 2 min. After education, the STCPR group had a significantly higher mean chest compression depth for 2 min and higher compression accuracy for late 1 min than the COCPR group. However, no significant difference in the willingness and confidence to perform CPR according to the compression method was evident. Conclusion: Repeated training is required to maintain chest compression quality. CPR education improves willingness and confidence to perform CPR.

In this study, we fabricate a thin- and dense-BCuP-5 coating layer, one of the switching device multilayers, through a plasma spray process. In addition, the microstructure and macroscopic properties of the coating layer, such as hardness and bond strength, are investigated. Both the initial powder feedstock and plasma-sprayed BCuP-5 coating layer show the main Cu phase, Cu-Ag-Cu3P ternary phases, and Ag phase. This means that microstructural degradation does not occur during plasma spraying. The Vickers hardness of the coating layer was measured as 117.0 HV, indicating that the fine distribution of the three phases enables the excellent mechanical properties of the plasma-sprayed BCuP-5 coating layer. The pull-off strength of the plasma-sprayed BCuP-5 coating layer is measured as 16.5 kg/cm2. Based on the above findings, the applicability of plasma spray for the fabrication process of low-cost multi-layered electronic contact materials is discussed and suggested.

경기도농업기술원에서는 2016년 백색 대형 스탠다드 장미 ‘Fascinar’을 육성하였다. 2011년 ‘Splash’ 품종을 모본으로, 향기가 강한 연보라색 장미 ‘Charming Easies’ 품종을 부본으로 교배하였고 5개월 후에 성숙한 꼬투리를 획득하여 암면배지에 파종하여 후대를 얻었다. 2012년 화색, 화형, 향기 유무 등의 특성검정을 통하여 G11-338 계통을 선발하였다. 선발된 계통을 2013년부터 2016년까지 1차, 2차, 3차 특성검정을 통하여 품종의 안정성과 균일성을 확인하여 ‘Fascinar’로 명명하였고 2017년에 국립종자원에 품종보호출원(제2017-198호) 한 후 2019년에 품종보호권이 등록(제7795호)되었다. 화색은 백색(RHS, N155D)으로 대조품종보다 짙은 백색이며, 화형은 스탠다드이며 고심형인 대형 장미이다. 향기는 대조품종 ‘화이트라임’ 보다 매우 강하며 주요향기 성분은 GERMACRENE-D, Nerol 등 테르펜류와 phenylethyl Alcohol이다. 잎의 형태는 타원형이고 가시가 적은 편이다. 연간 절화수량은 172.2본이고, 꽃잎수는 38.4매이며 절화품질 중 절화장은 75.0cm 절화경경은 6.2mm 절화중은 10.6g 이다. 절화수명은 11일, 화폭 9.2cm, 화고 5.2cm이다. 기존에 육성된 품종에 비해 향기 성분 함량이 높고 화형과 화색이 우수 하여 품종으로서 가치가 높은 품종이다.

본 연구는 농업용 호소의 녹조발생을 간편하고, 효율적으로 진단할 수 있는 도구를 개발하고자 하였다. 2018년 4월~10월 동안 15개 농업용 호소에서 채취된 182개의 시료를 이용하여 식물플랑크톤 현존량을 반영할 수 있는 수질 이화학적 항목을 살펴보고자 식물플랑크톤과 TN, TP, Chl-a, SD 등의 상관계수 (r)를 분석한 결과, 총 식물플랑크톤 현존량은 Chl-a (r=0.666), SD (r= -0.351)와 높은 상관관계, 남조류와 유해 남조류 현존량 역시 Chl-a과 각각 r=0.664, r=0.353, SD와 각각 r= - 0.340, r= -0.338로 유의성 있는 상관관계를 보여주었으나 TN, TP의 항목과는 유의한 상관관계가 나타나지 않았다. Chl-a 농도는 SD와 r= -0.434의 상관관계를 보여주어 식물플랑크톤 현존량 보다 높은 유사성을 나타냈으므로, 조류경보제에서 사용하는 유해 남조류 현존량 분석을 대신하여 녹조예찰을 위한 진단 요소항목으로 Chl-a와 SD를 선정하고 실시간 SD 실측 값을 이용하여 진단을 할 경우 그 결과에 대한 유의성이 있는 것으로 판단되었다. 녹조진단 도구는 SD와 탁도 측정 방법을 변형한 역원뿔 모양의 용기와 녹조판단조견표로 구성되어 있으며, 현장수를 채취하여 녹조발생 정도에 따라 용기 내에 보이는 원형환의 개수 또는 각 원형환에 표시 된 숫자를 관찰하고, 조류의 색도를 녹조판단조견표와 비교하여 최종 녹조단계를 판별할 수 있도록 하였다. 또한, 정확한 진단을 위해 Chl-a 농도와 원형환의 수에 근거한 4단계 진단 기준과 Hexa 코드명이 표기된 부채모양의 조견표를 제시하여 한가지 방법에 따른 변수와 오차를 보완하고 판단의 편리성을 함께 제공하였다. 이를 통해 농업용 호소의 녹조진단을 용이하게 할 수 있을 것으로 기대되며, 녹조 관리방안 수립을 효율화하여 녹조로부터 안전하고 건강한 농업용수 확보가 가능할 것으로 판단된다.

This study investigates passenger-authored online reviews of airline services using social network analysis to compare the differences in customer perceptions between full service carriers (FSCs) and low cost carriers (LCCs). While deriving words with high frequency and weight matrix based on the text analysis for FSCs and LCCs respectively, we analyze the semantic network (betweenness centrality, eigenvector centrality, degree centrality) to compare the degree of connection between words in online reviews of each airline types using the social network analysis. Then we compare the words with high frequency and the connection degree to gauge their influences in the network. Moreover, we group eight clusters for FSCs and LCCs using the convergence of iterated correlations (CONCOR) analysis. Using the resultant clusters, we match the clusters to dimensions of two types of service quality models (Grönroos, Brady & Cronin (B&C)) to compare the airline service quality and determine which model fits better. From the semantic network analysis, FSCs are mainly related to inflight service words and LCCs are primarily related to the ground service words. The CONCOR analysis reveals that FSCs are mainly related to the dimension of outcome quality in Grönroos model, but evenly distributed to the dimensions in B&C model. On the other hand, LCCs are primarily related to the dimensions of process quality in both Grönroos and B&C models. From the CONCOR analysis, we also observe that B&C model fits better than Grönroos model for the airline service because the former model can capture passenger perceptions more specifically than the latter model can.

경기도농업기술원에서는 2016년도에 고온기 생육 및 개화 특성이 우수한 절화용 스프레이 국화 ‘Perky Star’ 품종을 개발 하였다. 2012년도에 화색이 진한 노란색이면서 좁고 긴 설상화를 가진 ‘Sei-vista’ 품종을 모본(♀)으로, 화형이 좋은 ‘Amisa’ 품종을 부본(♂)으로 인공교배를 하였고 2014년부터 2016년까지 억제재배, 촉성재배, 가을재배 작형에서 생육 및 개화특 성을 검정하였다. 2016년 기호도 조사를 통해 최종적으로 GCS12-81-150계통을 선발하여 ‘Perky Star’로 명명하였고 2017 년에 국립종자원에 품종보호출원(제2017-64호)한 후 2018년에 품종보호권이 등록(제7465호)되었다. ‘Perky Star’ 품종은 노란 색 홑꽃형으로 고온에서 화색발현과 생육이 좋았으며 꽃잎이 두꺼워 여름철 수출품종으로 적합하다고 판단되었다. 가을재 배작형, 억제작형, 촉성작형에서 단일처리 후 개화소요일 수는 각각 49, 49, 53일, 절화장은 88.3, 84.2, 103.3cm, 꽃의 직경은 5.1, 4.8, 4.8cm, 줄기당 착화수는 25.0, 21.5, 38.8개로 고온에서 절화장과 착화수가 증가하는 경향을 보였다. 흰녹병 에 완전한 저항성을 갖지는 못한 품종이며, 자연개화 작형에서 절화수명은 21.3일로 대조품종 20.2일에 비해 조금 길었고, 5점 척도로 기호도를 조사한 결과 4.2점으로 대조품종 4.1과 비슷한 선호도를 보였다.

During indoor air conditioning, cold condensate is generated. But until recently, this condensate has not been recycled. This experiment and research is on the technology of the condensed water recycling in air conditioning. This study demonstrates the effect of condensate recycling, contributes to energy saving and water use reduction. For this purpose, the test equipment was installed to measure the temperature of the condensate generated in the fan-coil unit, and the performance of the high-pressure pump to be applied to the cooling pipe was examined. As a result, the water quality and energy saving effect.

A nationwide survey of 8 N-nitrosamines in finished water samples from drinking water treatment plants (DWTPs) in Korea was conducted. The samples were pre-treated by solid-phase extraction (SPE) and analyzed using a gas chromatography coupled with tandem mass spectrometry (GC-MS/MS). According to the study results, four N-nitrosamines (NDMA, NDEA, NMOR, NDBA) were detected for three consecutive years, NMEA and NPYR were only found in samples collected in 2013. Two of these N-nitrosamines, N-nitrosodimethylamine (NDMA) and N-nitrosodiethylamine (NDEA), have received attention and were the most commonly detected. The concentration of NDMA and NDEA in this study ranged from 0.002 μg/L to 0.013 μg/L and in 0.001 μg/L to 0.008 μg/L, respectively. In comparison to studies performed in EPA(UCMR2), the concentrations of NDMA (from 0.002 μg/L to 0.630 μg/L) and NDEA (from 0.005 μg/L to 0.100 μg/L) observed in the this study were low.

Corrosion inhibitors including calcium hydroxide have been used to prevent corrosion in the pipes for tap water supply. The corrosion index (i.e., Langelier Index) differs by area and water quality. The corrosion indices of the areas studied differed by more than 2.0. The ‘homogenized’ calcium hydroxide was added to the treated water at the K water treatment plant, in order to increase the value of the corrosion index and the concentration of calcium. As the result, the concentration of calcium was increased while the turbidity and pH changed little. The corrosion rate of the tap water with the 'homogenized' calcium hydroxide could be slowed down pretty much. The results suggested that the technology of 'homogenization' of calcium hydroxide can applied to tap water and desalinated water to prevent corrosion in water pipes even in corrosive pipes.