• 디지털융복합연구
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• 제12권8호
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• pp.211-217
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• 2014

본 논문은 지오펜싱 기술을 이용하여 관광객이 이동하려는 지역을 설정하고 설정된 지오펜스 영역 안에 관광객의 스마트폰이 들어가면 스마트폰의 메일 또는 SMS로 알람을 보내고 해당지역의 상세한 지도를 표시하여 찾아 가는 가이드 역할을 한다. 목적지의 박물관 또는 전시물에 도착하면 전시물들마다 NFC 태그를 부착하여 해당 전시물에 대한 자세한 설명을 웹서버로 부터 다운받아서 기존의 단순 전시물에 대한 설명을 멀티미디어 콘텐츠를 이용하여 전시 공간의 미디어화 및 관광객 사이의 상호작용을 할 수 있는 관광안내시스템을 구축하였다.

• 보건의료산업학회지
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• 제9권3호
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• pp.211-219
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• 2015

Objectives : The aim of this study is to suggest a direction for sexual education suitable for the aged by analyzing senior citizens' perception level and analyzing the demand for sexual education among the elderly, such as their feelings on the necessity of sexual education and the patterns of sex education. Methods : The population of this survey targeted elderly residents aged over 60 who are taking lectures at 4 university lifelong education centers that are located in Busan. The period of data collection was from May 10, 2013 to May 30, 2013. The methods of analyzing data were frequency analysis, t-test, and correlation analysis. Results : The general characteristic of the survey were that it included 60 men (41.1%) and 86 women(58.9%). As a result of the comparison of sexual perceptions and sexual-education demand according to gender, it was found that men had greater sexual perception and greater need for sexual education than did women. A correlation according to sexual-life perception and sexual-education demand showed a positive relationship and was statistically significant as well. Conclusions : This study will form a basis for formation of a direction for the development of sexual education programs.

• Geomechanics and Engineering
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• 제11권2호
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• pp.211-234
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• 2016

A total of 99 full-scale field load tests at 22 sites were compiled for this study to elucidate several issues related to the load-displacement behaviour of belled piers under axial uplift loading, including (1) interpretation criteria to define various elastic, inelastic, and "failure" states for each load test from the load-displacement curve; (2) generalized correlations among these states and determinations to the predicted ultimate uplift resistances; (3) uncertainty in the resistance model factor statistics required for reliability-based ultimate limit state (ULS) design; (4) uncertainty associated with the normalized load-displacement curves and the resulting model factor statistics required for reliability-based serviceability limit state (SLS) design; and (5) variations of the combined ULS and SLS model factor statistics for reliability-based limit state designs. The approaches discussed in this study are practical and grounded realistically on the load tests of belled piers with minimal assumptions. The results on the characterization and uncertainty of uplift load-displacement behaviour of belled piers could be served as to extend the early contributions for reliability-based ULS and SLS designs.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2015년도 제49회 하계 정기학술대회 초록집
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• pp.211.2-211.2
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• 2015

In order to investigate the effect of front channel in DAL (dual active layer) TFT (thin film transistor), we successfully fabricated DAL TFT composed of ITZO and IGZO as active layer using the solution process. In this structure, ITZO and IGZO active layer were used as front and back channel, respectively. The front channel was changed from 0.05 to 0.2 M at fixed 0.3 M IGZO of back channel. When the mol concentration of front channel was increased, the threshold voltage (VTH) was increased from 2.0 to -11.9 V and off current also was increased from 10-12 to 10-11. This phenomenon is due to increasing the carrier concentration by increasing the volume of the front channel. The saturation mobility of DAL TFT with 0.05, 0.1, and 0.2 M ITZO were 0.45, 4.3, and $0.65cm2/V{\cdot}s$. Even though 0.2 M ITZO has higher carrier concentration than 0.05 and 0.1 M ITZO, the 0.1 M ITZO/0.3 M IGZO DAL TFT has the highest saturation mobility. This is due to channel defect such as pores and pin-holes. These defect sites were created during deposition process by solvent evaporation. Due to these defect sites, the 0.1 M ITZO/0.3 M IGZO DAL TFT shows the higher saturation mobility than that of DAL TFT with front channel of 0.2 M ITZO.

• 한국환경과학회지
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• 제15권3호
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• pp.211-219
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• 2006

An experimental study on the removal of VOCs gas using a biomembrane reactor were carried out at various inlet gas concentration, specific loading rate, retention time and gas flow rate of volume. The variations of efficiency and various parameters, which are relevant to gas removal, with mixing of soluble gas and without have been discussed. More than 95% of the toluene and methanol present in the feed was successfully removed in each study. The elimination of methanol with mixture of soluble compound of about 300 mg/h corresponds to a portion of 21% if there is a feed stream of 1400 mg/h. On the contrary the maximum efficiency of about 72% of toluene was reached. This is to be rated as a treatment of sorption that the limiting factor of the dismantling speed could be represented by this difficult degradable component. Nevertheless the elimination capacities for this reactor for toluene were on a very high level. For substances which show a very high solubility in silicon rubber an advantage of a bio membrane is clearly shown. Therefore a similarly good result is expected for n-hexane, because of its relatively good permeability which was distinguished during permeation experiments.

• 한국건축시공학회지
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• 제16권3호
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• pp.211-217
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• 2016

본 연구에서는 2015년 가을철 실제 시공중인 고층 아파트를 대상으로 1중 백색 버블시트로 타설된 콘크리트의 표면을 덮어주는 버블시트 피복양생 공법과 표면을 노출한 채로 양생없이 유지하는 표면노출 방법간을 비교하여 소성 및 건조수축균열의 저감정도를 분석하였다. 실험 결과, 버블시트를 시공하였을 경우, 수화열 및 적산온도는 표면노출보다 약간 높았고, 바닥 균열의 갯수, 길이, 최대 균열폭, 균열 면적 모두 현저하게 적은 값이 측정되었다. 따라서 가을철 버블시트를 타설된 콘크리트 표면에 적용 할 경우에는 소성 및 건조수축균열을 획기적으로 방지할 수 있는 효과적인 표면피복 양생공법인 것으로 판단되었다.

• KSBB Journal
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• 제26권3호
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• pp.211-216
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• 2011

To study the effects of ethanol extract of the Rhodiola Sachalinensis on the anti-oxidation and blood pressure and skeletal muscles contractility in rats. The ethanol extracts and fractions of Rhodiola Sachalinensis were determinated the anti-oxidation effects by DPPH(1,1-dipenyl-2-picrylhydrazyl) method and comparing with the BHA (Butylated hydroxyanisole) and AA(Ascorbic acid). The gastrocnemius and soleus muscle contractility were observed by stimulating the sciatic nerve with electricity after affusing stomach with ethanol extract of the 200 mg/kg dosage of Rhodiola Sachalinensis for 4 weeks. The ethanol extract of the Rhodiola Sachalinensis could shorten latent period, increase maximal contractive extent and time and relaxative time at the twitch and complete tetanus of gastrocnemius and soleus muscles. The ethanol extract of the Rhodiola Sachalinensis shows high anti-oxidation effect and can enhance skeletal muscles contractility in rats.

• 센서학회지
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• 제15권3호
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• pp.211-215
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• 2006

Conducting polymer (Polypyrrole) and Tin oxide ($SnO_{2}$) composite films have been fabricated with layer-by-layer technique. $SnO_{2}$ layer was screen-printed on $Al_{2}O_{3}$ substrate and then was dip-coated with polypyrrole (Ppy). The microstructures of composite films were evaluated by a field emission scanning electron microscope (FE-SEM) and FTIR spectral analysis. The change in sensitivity to various VOCs was observed. The target VOCs were methanol, ethanol, benzene and toluene. The sensitivities of the $Ppy/SnO_{2}$ sensor to benzene and toluene were very low at 1000 ppm (2.1 %, 1.5 %), while the sensitivities to methanol and ethanol was high (9 %, 11 %). It indicates that the sensors have selectivity to alcoholic gases such as methanol and ethanol.

• 디지털산업정보학회논문지
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• 제6권1호
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• pp.211-223
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• 2010

Since its conception, the Internet has been exponentially growing and recent forecasts state that by the year 2011 almost one-quarter of the world's population will have internet access and few places have seen the radical effects of this new technology as strongly as south Korea which currently has the highest percentage of broadband users in the world with over 70% of its homes running at over 2Mbit/s. This explosion has revolutionized the way the industries, including that of the hospitality industry have conducted their businesses. The main challenge of this study was to explore how customers are currently using the Internet when developing purchase intentions. Customers were asked, through surveys, to evaluate four specific factors: format, accuracy, content and timeliness (FACT) in terms of their importance when making a restaurant choice. The findings of this study were as follows: content influenced the customer satisfaction, as well as timeliness influenced the customer satisfaction. But the other factor of the information didn't have interaction with the customer satisfaction. Customer satisfaction influenced the loyalty.

• 한국대기환경학회지
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• 제25권3호
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• pp.211-218
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• 2009

Feasibility study of using $Ti0_2$ mist generated by ultrasonic atomization for photocatalytic degradation of gaseous toluene was attempted in this study. For this, the photocatalytic reactor consisting of mist generator and photo-reactor was designed. Most of experimental results showed that steady state reached about 30 minutes after the start of experiments. The effects of $Ti0_2$ concentration, toluene concentration, and UV wavelength on toluene removal ratio were investigated. It was found that the highest removal efficiency was obtained when $Ti0_2$ concentration was 0.6 g/L in slurry. At this condition, it was found that the toluene removal efficiency increased as toluene concentration in feed decreased. In order to investigate the effect of UV wavelength, experiments were carried out using three UV lamps with different UV wavelength. The results showed that the highest removal efficiency was achieved when the lamp with the shortest wavelength were employed.