난대림에서 생육하고 있는 상록활엽수를 자원화하기 위해서 참식나무의 조직적, 물리적, 역학적 특성 을 분석하였다. 조직적 특성은 방사조직의 크기, 너비, 수와 도관의 크기를 관찰하였다. 참식나무의 전 수축률은 접선방향 11.00%, 방사방향 4.64%를 나타내었고 기건수축률은 접선방향 8.00%, 방사방향 2.88%를 나타내었다. 평균연륜폭은 2.93mm, 기건밀도는 0.52g/cm3, 기본밀도는 0.39g/cm3이었다. 휨 강도는 76.97Mpa, 압축강도는 10.97Mpa, 전단강도는 10.13Mpa이었다. 참식나무의 평균연륜폭과 강도 와의 관계는 1% 수준에서 유의성이 인정되는 부의 상관관계가 나타났다. 참식나무는 평균연륜폭의 높은 증가에 반해 강도 감소율은 비교적 낮은 감소를 나타내어 생장률 증가에 따른 강도 감소가 낮아 대경재 의 이용이 경제적이라고 판단된다. 남부지역의 참식나무는 온대에서 난대로 기후가 변화하는 난대 지역 의 산림자원으로 본 목재재질특성 분석결과 유용한 산림자원으로 활용할 수 있을 것으로 생각된다.

이 논문은 2002년 개최된 《제4회 광주비엔날레 초청 국제 워크숍–공동체와 미술》에 참여 한 한국 작가들의 경험을 분석함으로써 90년대 말 이후 한국에서 대안적 미술 실천을 진행했던 작가들의 인식의 변화를 추적한다. 이 워크숍은 전지구화된 세계 속에서 미술과 사회의 관계, 미 술제도에 대한 비판적 접근을 시도하는 대안적 주체들의 상호 교류의 장으로 기획되었으며, 한 국 작가들은 워크숍의 과정을 통해서 자신들의 위치를 재맥락화하는 경험을 갖게 되었다. 그들 이 경험한 지역은 신자유주의와 국민국가의 개념 속에 복속된 지역이 아니라 혼종성과 이질성 속에서 새롭게 만들어지는 지역이며, 이를 통해 공동체의 의미를 재발명하고, 세계와 연대할 수 있는 기반을 마련할 수 있었으며, 비판적 예술실천의 가능성을 재발명하고자 했다.

The aim of this study is to examine profiles of consumers in Thai seaweed market segments. A total of 321 consumers were surveyed in bangkok, thailand. The multiple regression analysis performed indicates that consumer preference toward seaweed snack is significantly influenced by seaweed consumption frequency. The cluster analysis performed indicates that there are three segments based on consumer purchasing attributes toward seaweed snack : leading type, pursuing type, beginner type. The results show that there are consumer segment with different purchasing attributes level and seaweed preference. in this study Thai seaweed market’s biggest consumer is leading type consumer(n〓40.8%) that have high level of purchasing attributes toward seaweed snack when compared to other segments. pursuing type segment(n〓27.4%) consists of consumers who have low level of purchasing attributes but have high consumption frequency. beginner type segment(n〓31.8%) consists of consumers who rarely eat seaweed snack and have high price sensitivity. This study can inform Thai seaweed consumer’s behavior and effective segment market strategies and target consumer based on purchasing behavior toward seaweed snack.

The Air-shiter is a new product possible ventilation at the same time cooling or heating with combined refrigerator and heat recovery ventilator. And a key device of this system is the air shifter. The air shifter device is to convert the outdoor air, room air, supply air and exhaust air flow. Therefore, an experimental study has been carried out to investigate the operating performance for this system. The results, it is possible to ventilate at the same time of heating by outside air above 30℃ in summer. and of heating by outside air within 3℃ in winter. The indoor discharge temperature is over 40℃, and the coefficient of performance is 3.4 in winter.

목적 : 국내 작업치료 임상실습교육의 운영에 대한 현황을 알아보고, 임상실습교육자의 관점에서 살펴 본 문제점 및 해결방안을 살펴보고자 한다. 연구방법 : 임상실습교육자 99명을 대상으로 2016년 5월 9일∼5월 17일까지 이메일과 스마트폰을 이용하여 설문조사를 실시하였고, 설문지 내용을 분석하였다. 결과 : 임상실습교육기관 형태로는 재활병원이 가장 높은 비율을 보였다. 임상실습교육 내용은 임무 중 중 재계획에서 실습생의 직접 수행이 가장 많았다. 학교차원에서 임상실습의 문제점은 학생들의 기초학력 및 전공필수 지식의 부족, 임상실습교육 내용의 가이드라인 부재에서 높게 나타났고 실습기관차원에서는 실습생 지도를 위한 시간 부족, 기관 규정상 실제 평가와 치료 실습 제공이 어려움에서 높게 나타났다. 학교차원의 문제점에 대한 해결방안은 협회수준에서 임상실습 교육내용의 가이드라인 제시, 임상실습 유 형에 따라 학생들의 전공 필수 역량제시 하는 것에서 높게 나타났다. 실습기관 차원에서는 협회수준에서 실습교육자를 위한 정규적인 교육과 임상실습교육자간의 모임 활성화, 임상실습교육자에게 일정시간에 대한 보수교육 면제(대체)에서 높게 나타났다. 결론 : 본 연구는 현재 작업치료임상실습교육에 대한 현황 및 문제점을 알아보았고, 앞으로 해결할 수 있는 다양한 해결방안을 제시하였다. 본 연구를 기초로 대한작업치료사협회와 대학, 임상실습기관의 조율을 통한 다양한 제도마련을 기대해본다.

The purpose of this study is to investigate the effects of oxides (caryophyllene oxide, eucalyptol and linalool oxide), one of the major ingredients of essential oils, on odor intensity, electroencephalography (EEG) response and emotional response. The subjects were women in their twenties. Inhalation concentrations of oxides were varied from 0.01 to 10%, and EEGs were collected by Quantitative EEG. The odor intensity and average preference index (API) of the oxides were ranked in the order of eucalyptol > linalool oxide > caryophyllene oxide. Eucalyptol is a refreshing and pleasant substance that activates the brain (activation of β and γ waves and spectral edge frequencies (SEF50 and SEF90)). Linalool oxide has a calm and soft substance (activation of θ, inactivation of α, β, and γ waves) at a low concentration (<0.1%), and a fresh smell at high concentration (inactivation β and activation of θ and γ). Caryophyllene oxides were evaluated as a substance that is comfortable, soft, calm and sedating, which deactivates the brain (activation of α, inactivation of β and γ). Oxide materials showed a positive correlation between the odor intensity and the SEFs. Each of the oxides showed unique characteristics in the areas of odor intensity, emotional response, API, and EEG. These results give us a better understanding of the properties of the pure materials that make up a fragrance, and provide useful information for the manufacture of fragrance products or aroma oil blends with enhanced specific functions.

In this study, the homogeneity and stability of standard samples for proficiency testing in indoor air quality within the country (formaldehyde, benzene, toluene, ethylbenzene, p-xylene, styrene, TVOC) were evaluated. The procedures and statistical analysis methods applied in ISO/IEC 13528 (2009) and KS A ISO Guide 35 (2005) were applied as evaluation methods. The homogeneity evaluation was a statistical analysis of repeated measurements of each of the 11 ports and between the 11 ports concentration data. As a result, the coefficient of variation (CV) was within the range of 1.9%~5.9%. The difference between the ports was found to be insignificant and met the statistical standard specified in KS Q ISO 13528. The stability evaluation was assessed by the change in concentration over the long-term stability of the standard samples stored for 90 days. The coefficient of variation (CV), which was within the range of 2.6%~9.0%, exhibited changes in the concentration of the long-term stored standard samples. However, the results satisfy the statistical standard specified in KS A ISO Guide 35. Overall, there is no significant difference between the homogeneity of the standard samples by the port and the stability of the long-term stored samples. Therefore, it is considered to be an appropriate method to supply standard samples in an indoor air quality proficiency test.

Odor emission factors (OEFs) are important parameters in characterizing odor sources, understanding emission patterns, designing abatement facilities, and providing appropriate control methods. In this study, OEFs for complex odor from grit removal chambers in publicly-owned wastewater treatment plants were determined, and the major operating conditions affecting the emission factors were investigated. In the main study site of “S” wastewater treatment plant, the averaged OEFs from the grit chamber were found to be 466.2, 162.6, and 54.7 OU/m2/min in summer, spring, and winter, respectively. OEFs from two other grit chambers in different wastewater plants were independently measured for comparison, and the values were in the same range as the OEF from S-site at a 95% confidence level. Nevertheless, the OEFs could differ depending on the types of wastewater and the sizes of wastewater treatment plants. Using the multi-variable linear regression method, correlations between OEFs and operating conditions, i.e. activities, from grit chambers were statistically analyzed. The analyses showed that operating conditions, including total suspended solids, water temperature, and temperature difference between water and air, were the most significant parameters affecting the OEF. A linear equation using these three parameters was proposed to estimate the OEF, and can be used to predict an OEF for another grit chamber, without odor measurement.

This study aims to analyze the effects of 4 directions of wind, wind speed, year of construction of slate roofs, installation area and other factors on the concentration and size distribution of airborne fiber particles in farmhouses with a slate roof containing asbestos. Airborne fiber particle samples were collected from the air in six houses with a slate roof containing asbestos using a high flow rate pump (10 L/min) for 2 hours, three times a day with a different condition, 72 times in total. The airborne fiber particle concentrations were measured using a phase contrast microscope, and the size of fiber particles of 72 samples in total was estimated using the mean value of those in each sample measured at 100 with a field of view. The total average concentration of fiber particles collected from in the air in four directions of the targeted farmhouses was 2.83 fiber/L, and its maximum concentration was 5.75 fiber/L, which means that among all samples there was no place that exceeded 10 fiber/L, a recommended indoor air quality standard. The average size of the fiber particles was 11.55 μm, and the maximum size was 40 μm. A multiple regression analysis of factors affecting the concentration and size of fiber particles in the air collected from the farmhouses with a slate roof containing asbestos found that the closer to the main wind direction (p<0.001) and the faster the average wind speed (p<0.05), the fiber particles concentration became significantly higher. In this case, the coefficient of determination was 52.8%. It was also found that the wider the total area of the slate roof (p<0.001) and the slower the average wind speed (p<0.05), the longer the fiber particles; the coefficient of determination for this finding was 19.6%. The concentration of fiber particles in the air of farmhouses with a slate roof appeared to be the highest under the main wind direction, and became significantly higher as the wind speed became faster. This proved that fiber particles were leaked from the slate roof. The size of the fiber particles became significantly longer as the area of the slate roof became wider and the wind speed became slower.

For scientific research, a number of acoustic surveys using commercial echosounders equipped in fishing vessels were conducted throughout the world; however, few studies were performed in South Korea. Hence, this research is an preliminary study for presenting the application of a sounder from a fishing vessel. The fishing operations using a pair trawler (7 Cheonghae) was conducted in the Northwest-Western sea of Jeju Island from 20 to 23 April, 2016. Substantial impulse noises and attenuated signals were eliminated by the latest algorithms. Acoustic signals were grouped into the fish aggregations and long layer-like signals. The fish aggregations appeared between 30 and 60 m, and long layer-like signals showed the diurnal vertical migration. Energetic, morphological and positional properties of the fish aggregations and layer-like signals were described. The fish aggregations appeared mainly between sunrise and sunset; however layer-like signals tended to be presented regardless of time in consideration of the time series analysis. On the basis of the consignment sales, Scomberomorus niphonius, the target species of F/V 7 Cheonghae, was the highest catch with 4,280 kg (74.6%) and might have appeared in fish aggregations and layer forms.