This study analyzes the management performance of environmentally-friendly rice farms using GCM method based on the multifaceted approach. This approach compares the management performance of GCM farms before and after the introduction of GCM, as well as the performance of GCM farms with the performance of conventional farms. It also compares the technical and managerial competence level of surveyed GCM farms with that of conventional farms based on the standard diagnosis table developed by Rural Development Adminstration. Results showed that average income has increased after the introduction of the GCM method and the average income of GCM farms was higher than that of conventional farms, while the level of rice production in farms using GCM method was lower than that of conventional farms. In addition, the technical and managerial competence score of surveyed farms using GCM method was higher than that of conventional farms. These results implies that the higher management performance of GCM farms compared to the conventional farms is attributed to not only the GCM method but also the competence level of farms using GCM method.

Purpose - With the worldwide aging problem and the development of globalization, customers prefer to seek affordable medical services with the higher quality overseas. This new trend has urged some destination countries to improve their services for the more competitive advantages over other countries. Literature research indicate that medical quality and cost may be the key factors influencing global patients’ decisions. In the international environment, however, medical tourism destinations are selected due to cultural similarity between the hosting country and the customers’ own country. The more similarity perceived between the two countries leads foreign patients to choose the considering country as the destination for medical tourism. However, little research has been conducted on this topic. Thus, we empirically investigate how cultural similarity influences Chinese medical customers’ choice of the destinations. We also consider the factors related to medical competency and travel attribute which might affect customers’ decisions along with some moderating roles of disease types. Research design, data, and methodology – We proposed a research model in order to confirm the relations among different variables of cultural similarity, medical competency, travel attractiveness, disease types, and destination choice. The questionnaire survey is processed in the more economically developed regions of China such as Beijing, Shanghai, and Jiangsu. Conditional logit regression is applied to analyze the data of 881. Results - Results indicate that cultural similarity is the important predictor of Chinese customers’ decision to select a medical country. However, the effects of cultural similarity vary according to the disease types. We also find that medical competency and travel attractiveness influence their decisions with the moderating role of disease types. Conclusions – Cultural similarity is the important factor that influences Chinese potential medical tourists’ decisions to select a destination. Marketing managers should consider the effects of cultural similarity when developing strategies for attracting Chinese medical tourists. Since medical competency and travel attractiveness are still the critical key elements for them to evaluate the destination countries, it is necessary to continuously improve medical service quality and facilities. The results also recommend that medical managers should sharpen their marketing strategies by segmenting Chinese potential customers in terms of disease types.

The paper introduce the experimental program of investigation on the performance of RC beams strengthened with Uni-Directional Narrow Fabric. A total of twelve shear-critical specimens were constructed and experimentally investigated through static loading tests. Experimental parameters include the shear rebar, the type of fiber, and spacing of the fiber. Testing data were analyzed to investigate the performance of the specimens retrofitted or strengthened with Uni-Directional Narrow Fabric compared to the behavior of the non-retrofitted RC beam.

This study proposed a seismic isolation system which uses the LM guide featuring high hardness and low frictional coefficient and a viscoelastic damper possessing high restitution force and damping force in order that existing seismic isolation systems using conventional sliding bearing way can be applied to a structure, and intended to analyze the proposed seismic isolation system's utilization possibility as a seismic isolation system for rescue through an experiment utilizing 6 earthquake waves being entered according to the reoccurrence cycle on the basis of performance-based design, and the case of Kyungju earthquake and to interpret the results of experiment.

Studies on the lattice girder of the cross sectional form and construction works through laboratory experiments have been performed. The numerical analysis for structural behavior such as deflection and stresses on the lattice girder, however, are insufficient. In this study the stiffness of a lattice girder was examined by using MIDAS.

This study proposed a seismic isolation system which uses the LM guide featuring high hardness and low frictional coefficient and a viscoelastic damper possessing high restitution force and damping force in order that existing seismic isolation systems using conventional sliding bearing way can be applied to a structure, and intended to analyze the proposed seismic isolation system's utilization possibility as a seismic isolation system for rescue through an experiment utilizing 6 earthquake waves being entered according to the reoccurrence cycle on the basis of performance-based design, and the case of Kyungju earthquake and to interpret the results of experiment.

In this study, the use of natural raw material and an inorganic binder such as vermiculite, perlite board prepared by using the inorganic was to prepare a switchboard casing. The characteristics of the basic physical properties such as compression strength of a board made of the inorganic material to the pre-study evaluation therefor.

This study evaluates tensile strength and percentage extension of the four kinds reinforcement type for the development of continuous pavement technology road joints using geosynthetic reinforcement was to choose the best geosynthetic reinforcement to satisfied the target reference value.

In this paper, shear strain dependence of high hardness laminated rubber bearings were studied through tests. The shear strain dependency test is considered the changes by increase the shear strain by 50%, 100% and 150% based on 100% of total rubber thickness. As the test results shear strain increases were identified a tendency to decrease the shear stiffness.

Visibility and Automatic Weather System(AWS) data near Nakdong river were analyzed to characterize fog formation during 2012-2013. The temperature was lower than its nearby city – Daegu, whereas the humidity was higher than the city. 157 fog events were observed in total during the 2 year period. About 65% of the events occurred in fall (September, October, and November) followed by winter, summer, and spring. 94 early morning fog events of longer than 30 minutes occurred when south westerly wind speed was lower than 2 m/s. During these events, the water temperature was highest followed by soil surface and air temperatures due to the advection of cold and humid air from nearby hill. The observed fog events were categorized using a fog-type classification algorithm, which used surface cooling, wind speed threshold, rate of change of air temperature and dew point temperature. As a result, frontal fog observed 6 times, radiation 4, advection 13, and evaporation 66. The evaporation fog in the study area lasted longer than other reports. It is due to the interactions of cold air drainage flow and warm surface in addition to the evaporation from the water surface. In particular, more than 60% of the evaporation fog events were accompanied with cold air flows over the wet and warm surface. Therefore, it is needed for the identification of the inland fog mechanism to evaluate the impacts of nearby topography and land cover as well as water body.

This study presents an experimental study on compressive and flexural strengths of concrete reinforced by 3D Fiber Reinforced Polymer(FRP). This study is intended to investigate the potential of 3D FRP concrete composites against impact or explosive loadings. For the comparative study, non-reinforced specimen and specimens reinforced by 3D FRP are constructed and tested. 20mm×10mm 3D fiber and 25mm×20mm 3D fiber was set to be variable.

This research is in developing a seismic isolation system for protecting a structure such as small non-structural assets at this point of time where seismological observation is on the rise in internal and external. this seismic isolation system was produced by using the damper with restoring force and damping force, and the LM guide which enable linear behavior, and progressed performance test.

본 연구에서는 시각적 동요를 기반으로 하는 선박운항 시뮬레이터(ship handling simulator)에서 시뮬레이터 멀미 설문(SSQ, simulator sickness questionnaire)과 압력 중심(COP, Center Of Pressure)을 이용하여 시뮬레이터 멀미(simulator sickness)를 계측할 수 있는 기법을 제안한다. 실험을 위하여 선박운항시뮬레이터에서 피실험자가 시각적 동요에 노출되도록 하였고 해상상태(sea state)를 3단계로 바꾸어 가며 실험을 수행하였다. 시각적 동요 노출의 직후에 피실험자는 SSQ를 통하여 실험동안의 자각증상에 대한 설문을 작성하였고, 시각적 노출 중에는 지면반발력계를 이용하여 피실험자의 COP를 측정하였다. 시각적 동요, SSQ, 그리고 COP의 데이터 분석을 통하여 시뮬레이터 멀미와 피실험자의 COP 사이의 연관성을 고찰하였다. 실험 및 분석을 통하여 해상상태에 따른 SSQ 점수와 피실험자 COP에 대한 각각 관계식을 제 시하였고, 피실험자의 종방향 COP가 시뮬레이터 멀미 계측을 위한 지수로 활용될 수 있음을 보였다.

선박 기술 발전에 따라 다양한 장비가 개발되고 있지만 인적요인에 의한 해양사고는 여전히 지속적으로 발생하고 있다. 이러한 상황에서 인적요인에 의한 사고 감소를 위하여 선교 내 항해장비의 인간공학적 설계가 많은 관심의 대상이 되고 있다. 선교에는 항해 및 통신장비로부터 나오는 음향 신호 등 항해사에게 정보를 전달하기 위한 다양한 청각 신호들이 존재한다. 하지만 이러한 청각 신호, 청각 경고음에 대한 인간의 인지능력에 관한 연구는 미흡한 실정이다. 청각 경고음은 크게 음성(speech), 함축적 소리(abstract sound), 청각 아이콘(auditory icon)으로 구분 할 수 있다. 본 연구에서는 청각 경고음 중 청각아이콘을 활용하여 5가지의 경보상황(엔진, 화재, 조타, 전기, 충돌)에서 청각아이콘에 대한 감성평가를 통해 각 상황에 적합한 청각아이콘을 선별하였다. 5가지 경보상황 중 뚜렷한 경향이 나타난 2가지 경보상황(엔진, 충돌)에 대하여 분석을 하였다. 본 연구 결과는 선교 내 청각표시장치와 통합선교알람관리시스템을 위한 기초자료로 활용될 수 있을 것으로 기대된다.

The purpose of this study was to examined the antioxidant activities by water and 70% ethanol extract from durian (Durio zibethinus.) seed, sarcocarp and peel. Durian extract were studied for reducing sugar content, polyphenol content, superoxide dismutase (SOD) like activity, electron donating ability, nitrite scavenging ability, flavonoid content, hydroxy radical scavenging activity. Reducing sugar content were increased peel 〉 sarcocarp 〉 seed. Total polyphenol, flavonoid content, DPPH radical scavenging ability and SOD like activity were increased seed 〉 peel 〉 sarcocarp. Total polyphenol content was relatively high as 21.90±0.50mg/g in the ethanol extract of the seed. DPPH radical scavenging ability was relatively high as 62.08±2.63% in the water extract of the seed. Nitrite scavenging ability was no significant difference. Hydroxy radical scavenging activity was increased seed 〉 peel 〉 sarcocarp, was relatively high as 58.27±1.13% in the water extract of the seed.

Although antioxidant activities of Korean traditional fermented foods were reported by many researchers, study on antioxidant activity of microorganism originated from Korean traditional fermented foods was little. Therefore, we improved condition for antioxidant production by a bacterium isolated from home-made Chungkookjang. We selected a bacterial strain, which showed the highest antioxidative activity, from Chungkookjang and then named GJ. The selected GJ strain was identified as Bacillus methylotrophicus by alignment data of 16S rRNA gene nucleotide sequences. Improved medium compositions for DPPH radical scavenging activity were 0.25% sucrose, 1% peptone, 0.01% MgSO4·7H2O and initial pH 6.5, respectively. Optimal culture conditions were 30℃, 200 rpm and 4% inoculum volume, respectively. In improved conditions, DPPH radical scavenging activity of GJ reached to 91% in a short time. The strain GJ also possessed ACE inhibition and other antioxidative activities; ACE inhibition activity (49.4%), ABTS radical scavenging activity (99.8%), metal chelating activity (67.9%), SOD-like activity (36.5%) and reducing power (A700 = 5.982) were observed, respectively. Therefore, our results suggest that B. methylotrophicus GJ strain may be potential candidate for functional foods, cosmetic products for anti-aging and medicine for diseases caused by oxidative stress.

최근 발생한 대규모 지진으로 구조물의 내진보강에 대한 사회적 관심도가 높아지고 있다. 내진성능 향상을 목적으로 FRP 복합재료의 사용성에 대한 연구 및 개발이 활발히 진행되고 있다. 복합재료를 사용한 내진보강재는 강성과 연성을 가진 재료이어야 하므로 복합재료 보강재 설계 시 강성재와 섬유의 선택이 중요한 변수이다. 내진성능 향상을 위한 섬유보강 복합재료의 최적조합을 인장 테스트를 통하여 선정하였다. 선정된 섬유보강 복합재료 보강재를 실제 구조물에 적용하기 위하여 실제 기둥부재에 보강하는 것을 가정하여 유한요소 해석하였다. 유한요소 해석을 통하여 구조물의 내진성능 향상효과를 변위-하중 관계를 통하여 평가하였다. 섬유보강 복합재료 보강재를 사용할 경우 구조물의 내진성능이 증가한다는 해석적인 연구 결과를 도출하였다.