• Elastomers and Composites
• /
• 제51권2호
• /
• pp.138-146
• /
• 2016

It is an inconvenience for silica nano-particles to dry again when using it in that they cohere each other through moisture in the air. Acrylamide groups were introduced to improve such inconvenience and copolymerized with silica nano-particles and then we copolymerized again with polyamic acid in order to increase thermal characteristic. Amide block copolymers were prepared using silica and (3-mercaptopropyl) trimethoxysilane (MPTMS) with a siloxane group, using 2,6-Lutidine as a catalyst. Amide block polymers and copolymers were synthesized via ATRP after brominating pyromellitic dianhydride (PMDA) and polyamic acid of methylene diphenyl diamine (MDA), using ${\alpha}$-bromo isobutyryl bromide. Characteristic peaks of copolymer with amide and imide groups and patterns of amorphous polymers were researched by FT-IR and XRD analyses and the analysis of surface characteristic groups was conducted via XPS. A change in thermal properties was examined through DSC and TGA and solubility for solvents was also researched.

• 한국실내디자인학회:학술대회논문집
• /
• 한국실내디자인학회 2002년도 춘계학술발표대회 논문집
• /
• pp.91-98
• /
• 2002

This thesis is aimed to suggest the efficiency at the education space for job-rehabilitation through grasping the characteristics of behavior and attitude of the handicapped and analyzing their loaming behavior as an employment promotion for the disabled. For that purpose, the demand of the handicapped and some overlooked space problems we searched by survey, interview, observation and investigation to offer basic data for interior design planning. It resulted firstly that the inconvenience of narrow space was pointed out in many responses implying users suffer from the stress and inconvenience caused by an unconsidered space planning to their behavior. And secondly further difficulties are added when medical appliances for the disabled are not appropriate to common furniture. Finally, without identification of the behavior and attitude of the handicapped the minimum or optimum space needed for them could not be suggested and it may cause to decrease the efficiency in their learning.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 1999년도 추계학술대회 논문집
• /
• pp.17-26
• /
• 1999

This paper studies on the benefit evaluation of urban railway construction project. We compares Korean Method with Japanese in calculating the generalized cost(GC) of a trip. In Japan, the disadvantage of transferring to another mode or line is included to calculate GC of trip. And environmental effects are contained directly as rail construction benefit. But in Korea, inconvenience of transferring facilities like stairways and passageway for riding a subway is not accounted to analyse benefit. As a result, there is a little investigate to improve and overcoming the inconvenience facilities of transfer, access, and egress. So, we suggest the containing the disadvantage measure of transferring facilities when subway riderships are forecasted. That will be reduced tile capital size of subway.

• 한국멀티미디어학회논문지
• /
• 제21권12호
• /
• pp.1370-1378
• /
• 2018

There is a problem to measure neutral bio-signals during sleep because of inconvenience of attaching lots of sensors. In this study, we measured single electrocardiogram(ECG) signal and analyzed the correlation with sleep. After R-peak detection from ECG signal, we extracted 9 features from time and frequency domain of heart rate variability(HRV). Mean of HRV, RR intervals differing more than 50ms(NN50), and divided by the total number of all RR intervals(pNN50) have significant differences in each sleep stage. Specially, the mean HRV has an average of 87.8% accuracy in classifying sleep and awake status. In the future, the measurement ECG signal minimizes inconvenience of attaching sensors during sleep. Also, it can be substituted for the standard sleep measurement method.

• 한국융합학회논문지
• /
• 제10권1호
• /
• pp.149-154
• /
• 2019

밸브를 생산하는 공장에서 사용하는 기존의 밸브시험기는 압력을 수동 조작함으로서 정밀압력을 측정 할 수 없었다. 이를 개선하기 위하여 기존의 밸브시험기에 대하여 CATIA를 활용하여 설계하고 3차원 유한요소 해석코드인 ANSYS를 활용하여 설계된 밸브시험기에 대하여 거동해석을 수행하고 고압의 내부압력에 따른 내부누수, 총변형량, 변형률, 응력 등을 구하였다. 이러한 해석결과는 새로운 고압용 밸브시험기를 개발하기 위한 초기자료로 활용되었다.

• 대한통합의학회지
• /
• 제3권2호
• /
• pp.29-37
• /
• 2015

Purpose: The purpose of this study was to investigate the factors that make the bathroom experience an inconvenient one for stroke patients, including the use of basic materials to provide an effective and individualized bathroom environment. Method: The survey was conducted from May 20 to June 20, 2014 on 81 stroke patients. The questionnaire is composed of the following: general factors of respondents, degree of inconvenience of general bathroom usage, and inconvenient factors. The questions on inconvenient factors of bathroom usage are comprised of 20 questions in a 5-point Likert scale. Result: The degree of inconvenience of bathroom usage results showed that the group of patients using wheelchairs experience more inconvenience than the group of patients without wheelchairs. The inconvenient factors between two groups are shown to have significant differences in the door sill, the location of the mirror, the chair for showering, transferring to the bathtub, slippery floor, the location of cabinets, door width, shower space, the location of shower booth, and the safety handle on the wall and toilet (p<.05). Conclusion: The result of this research shows that the inconvenient factors in the bathroom experience stroke patients vary depending on the use of wheelchair. The result may be utilized as therapeutic basic materials provide an effective bathroom environment to stoke patients in future.

• Archives of Plastic Surgery
• /
• 제39권6호
• /
• pp.612-617
• /
• 2012

Background Packing after closed reduction of a nasal bone fracture causes inconvenient nasal obstruction in patients. We packed the superior meatus with Vaseline gauze to support the nasal bone, and packed the middle nasal meatus with a Doyle Combo Splint consisting of an airway tube, a silastic sheet, and an expandable sponge to reduce the inconvenience. In addition, we aimed to objectively identify whether this method not only enables nasal respiration but also sufficiently supports the reduced nasal bone. Methods Nasal ventilation was measured via spirometry 1 day before surgery and compared to 1 day after surgery. To compare support of the reduced nasal bone by the 2 methods, 2 plastic surgeons assessed the displacementon X-rays taken after the surgery and after removing the packing. The extent of nasal obstruction, dry mouth, sleep disturbance, headache, and swallowing difficulty were compared with visual analog scales (VAS) on a pre-discharge survey. Results In the experimental group, the nasal respiration volume 1 day after surgery remained at $71.3%{\pm}6.84%$ on average compared to 1 day prior to surgery. Support of the reduced bone in the experimental group ($2.80{\pm}0.4$) was not significantly different from the control group ($2.88{\pm}0.33$). The VAS scores for all survey items were lower in the experimental group than in the control group, where a lower score indicated a lower level of inconvenience. Conclusions The nasal cavity packing described here maintained objective measures of nasal respiration and supported the reduced bone similar to conventional methods. Maintaining nasal respiration reduced the inconvenience to patients, which demonstrates that this packing method is useful.

• 한국의류산업학회지
• /
• 제10권2호
• /
• pp.228-235
• /
• 2008

The purpose of this study is to examine the functionality with material-improved working uniform(protocol, P) and current working uniform(control, C). Movement functionality evaluation of material-improved working uniform was carried out through sensory evaluation of working uniform. And Oxygen uptake was explored to different working uniform(P, C) in relation to a physiological functionality measurement. The results have been shown as follows: It was found that the workers feel uncomfortable with the parts of the wrist, the back width, the shoulder seam and the side in the current working uniform when they move their arms up and down, but the inconvenience has been reduced in the material-improved working uniform. And It was found that the workers feel uncomfortable with the parts of the back width, the wrist and the side seam of the jacket, and the waist, the hips and the thigh of the trousers in the current working uniform when they move their waist, but the inconvenience has been reduced in the material-improved working uniform. In the current working uniform, it was also found that they feel uncomfortable with the parts of the horse riding position in which they stand straight in their slightly bended knees, with the parts of the hips, the side seam, the thigh and the knees when they crouch down, and with the parts of the hips and the thigh when they put one of their legs onto a higher place. However, the inconvenience was reduced in the material-improved working uniform. Oxygen uptake, which was measured to assess physiological dressing functionality, was found to be higher when people work in an uncomfortable uniform than when they work in a uniform of better functionality by an increase in metabolic rate, which can be a cause of workers' inefficiency of fatigue.

• 디지털융복합연구
• /
• 제20권4호
• /
• pp.279-290
• /
• 2022

코로나 19로 인해 라이브 스트리밍 서비스 시장의 성장이 가속화되고 있어 라이브 스트리밍 모바일 애플리케이션의 다운로드와 리뷰의 수도 급격히 증가하고 있다. 본 연구에서는 게임 스트리밍 서비스 기업 중 하나인 트위치(Twitch)의 모바일 애플리케이션을 대상으로 하여 텍스트마이닝 기법 중 LDA 토픽모델링을 통해 총 8개의 토픽을 추출하였는데 그중 7가지 불편요인들이 추출되고, 공기어 분석 방법을 활용해 사용자 리뷰를 분석하여 사용자가 주로 느끼는 5가지 불편요인들을 탐지하여, 최종, 광고, UI 디자인, 기술문제를 해결하는 동시에 디지털 경쟁력도 강화할 수 있는 솔루션을 제공하였다. 본 연구에서 제공한 솔루션은 향후 트위치(Twitch)뿐만 아니라 타 라이브 스트리밍 서비스 기업에도 디지털 경쟁력을 향상할 수 있는 기회를 제공할 수 있을 것이다. 향후 본 연구에서 제공한 솔루션의 유용성 및 신뢰성을 판단하기 위해 진일보 연구할 가치가 있다.

• 치위생과학회지
• /
• 제13권1호
• /
• pp.105-114
• /
• 2013

본 연구는 교정 진료를 받은 경험이 있는 교정이 완료된 환자의 대상으로 치열교정환자의 교정치료에 따른 진료인식이 교정치료를 하는데 만족과 추천에 미치는 영향을 조사하여 교정환자를 전문으로 하는 의료기관에 정보를 제공하고자 2010년 2월부터 8월까지 조사한 것으로 SAS ver. 9.1 분석결과 다음과 같은 결론을 얻었다. 1. 조사대상자의 치과의료기관 이용특성으로는 삐뚤어진 치아교정이 43.9%로 가장 많았으며, 교정치료예상기간으로는 1년 6개월~2년이 53.3%로 과반수 이상으로 나타났으며, 교정이 완료 후 경과시간은 23.5%인 6~12개월이 지난 환자들이 많았고, Angle의 부정교합으로는 I급이 63.4%로 가장 많았고, 임상적 부정교합으로는 42.4%인 총생이 가장 많았다. 2. 대상자의 치과진료 협조도와 진료서비스 만족도, 본 의원 추천도, 편의시설 만족도들의 상관분석 결과에서는 각각의 항목들 간에 모두 유의한 양의 상관관계가 나타났다. 3. 교정치료에 대한 진료인식에 있어서는 교정치료 장치의 불편이 79.3%로 대상자의 대부분이 인식하고 있었으며, 교정치료 중 불편사항에 대해서도 69.8%로가 인식하고 있으며, 61.6%가 예상한 만큼 교정치료비가 나왔으며, 교정치료 중 내원횟수가 72.8%가 적절했다고 나타났으며, 교정치료의 기간도 61.2%로가 적절하다고 나타났고, 교정치료 중 진료내용의 이해에서도 62.6%가 이해하는 것으로 나타났다. 4. 일반적 특성에 따른 교정치료에 대한 진료인식도 비교에서는 남자보다 여자가 교정치료 장치의 불편인식도(p<0.05), 교정치료 중 불편사항이(p<0.05) 높은 것으로 나타났다. 이에 교정환자는 교정치료 시작 전에서 교정치료를 하는 동안에 여러 가지 필요한 사항들은 미리 인식함으로써 좀 더 만족스럽고, 효율적으로 교정치료를 받을 수 있음은 물론이고, 지인들에게 의료기관을 추천할 것으로 사료된다.