목적 : 본 연구에서는 임상 작업치료사들이 간헐적 구강식도관을 적절하게 적용할 수 있는 기준에 대한 근 거자료를 제공하고, 간헐적 구강식도관에 대한 인식을 높이고자 하였다. 연구방법 : 간헐적 구강식도관 적용이 의뢰된 자 57명을 대상으로 작업치료사가 간헐적 구강식도관을 적 용하였다. 의무기록 열람을 통해 대상자들의 특징을 조사하였고, 인지 기능 평가를 위해 한국형 간이 정 신상태 검사(Korean version of Mini Mental State Examination; K-MMSE)를 시행하였다. 훈련을 통해 간헐적 구강식도관 적용을 성공한 군과 실패한 군으로 나누어 두 군의 특징을 비교하였다. 결과 : 57명 중 45명(78.9%)은 간헐적 구강식도관을 적용하였으나, 12명(21.1%)은 간헐적 구강식도관 적 용을 실패하여 영양 섭취 방법을 변경하지 않았다. 실패 원인으로는 인지 저하 4명 (33.3%), 적용 방법에 대한 거부 3명(25.0%), 구역 반사 3명(25.0%), 폐렴 2명(16.7%)순으로 조사되었다. K-MMSE 점수에 서 간헐적 구강식도관 적용을 성공한 군의 점수가 실패한 군의 점수보다 유의하게 높았다. 그러나 각 군의 평균 연령, 발병일로부터 연하재활치료 시작일까지의 평균 기간, 발병일로부터 간헐적 구강식도관 훈련일까지의 평균 기간, 연하재활치료 시작일부터 간헐적 구강식도관 훈련일까지의 평균 기간, 간헐적 구강식 도관 훈련 기간에서는 유의한 차이가 없었다. 결론 : 간헐적 구강식도관 적용은 처치 방법과 관리에 대해 충분한 설명을 들은 환자 및 보호자가 동의하였을 경우 실시가능하다. 또한, 인지 기능과 구역 반사가 간헐적 구강식도관을 적용하기에 적합한 환자에게는 과도기적 영양 지원 방법으로 뿐만 아니라 치료적 목적으로 고려될 수 있다고 사료된다. 그러나 폐렴, 역류 등이 의심되는 경우 적용을 제한할 것을 권고하고 장기간 안전하게 적용하기 위해서는 환자 및 보호자의 철저한 관리가 요구된다.

The purpose of this study is to propose the information and idea that can be applied to color planning by investigating preferred color according to ages, items by distribution of 30s~50s women. As the survey method, questionnaire survey and one-to-one investigation by preparing the color table of basic color and trend color were conducted, and total of 280 questionnaires were used for statistical analysis. The results of this study areas follows. First, in basic color, there were significant differences in preferred hues and tones by age groups. The preferred hues were N, PB in all ages, and the higher the age, the more people preferred vivid tones. Second, in basic color, there was significant difference in preferred hues of jumpers, one-pieces by distribution, and the preferred hue was found to be N in the items except jumpers. There were significant differences in preference tones of all items according to distribution. Third, in trend color, there was no significant difference in preferred hues by age groups. Preferred tones had significant differences by distribution, and the higher the age, the more people preferred vivid tones. Fourth, in trend color, some items had significant differences in preferred hues and tones by distribution. B was preferred in all age groups, and vivid tones were more preferred in wholesaler than the department store. Based on these results, this study proposed 30s~50s women's wear color planning idea that applied consumers' preferred color according to ages and items by distribution.

The purpose of this study was to verify the effect of drive swing on multiple functional wear wearing in golf. The subjects were 6 men (22.67±0.82 yrs, 175.42±3.42cm, 78.75±4.78kg), who had career each with at least 8 yers golf experience with right-hander. For kinemetical analysis, this study used equipments with 7 motion capture cameras (300Hz) and analysis program (Nexus1.5). The total time of the club head, displacement magnitude of the COM and swing plane were compared of according to functional wear wearing and non-weraing during golf drive swing. The results of the study are as follows. The total time of the club on wearing (2.18±0.06sec) was faster than non-wearing (2.52±0.15 sec). Displacement magnitude of the COM on wearing (4.06±0.67cm) was shorter than non-wearing (5.79±0.72cm). Also, swing plane was found to be significantly different of 3 phase excepted BST-DS (back swing top-down swing) phase. AD-BST (address-back swing top) phase on wearing (13.86±3.08cm) decrease more than non-wearing (20.82±3.99cm), DS-IP (down swing-impact) phase on wearing (6.25±1.35cm) decrease more than non-wearing (7.18±1.52cm) and IP-FT (impact-follow though) phase on wearing (7.93±2.09cm) decrease more than non-wearing(9.68±2.02cm). The multiple functional wear wearing was contribution to come close for one-plane, a long with consistency and accuracy on golf drive swing.

On-line detection system of the abnormal states in a machining process needs to be developed to implement the IMS(Intelligent Manufacturing System). High productivity and efficient quality control can be achieved through the on-condition maintenance for normal tool condition. Generally it is difficult to determine the exact point of time for a tool change because a tool wear grows gradually on the contrary to other abnormal states such as tool fracture, chattering etc. In this article, the shape variation of cutting force signal generated by a insert during face milling was investigated along with a tool wear. The variance, skewness and kurtosis were used as the shape parameters to describe the shape variation and, consequently, utilized as the features to monitor a tool wear. Experimental results showed that the shape parameters could discriminate the tool condition reliably between a fresh tool and a worn tool. As a result, we proposed the method to diagnose a tool wear by combining these parameters with a neural network algorithm.

In this article, to predict the wear amount of nano particles in a worn nano composite, computational analysis pre/post-processor were developed using ABAQUS and visual basic programs. The abrasion, which is one of nano particles release scenarios, was applied in the computational analysis. Moreover, reciprocation, which is the abrasion type, was selected and incarnated in abrasion computational analysis. Also, to predict wear amount of nano composite in computational analysis, archard equation was applied and the predicted wear amount was evaluated compare with experimental value. The predicted wear amount of nano composite was increased in accordance with increasing force and was similar to result of experimental value.

The friction and wear characteristics of the rubber matrix composites filled with nano sized silica particles were investigated at ambient temperature by pin-on-disc friction test. The volume fraction of silica particles was 19%. The cumulative wear volume and wear rate of these materials on counterpart roughness were determined experimentally. The major failure mechanisms were lapping layers, deformation of matrix, ploughing, debonding of particles, fracture of particles and microcracking by scanning electric microscopy photograph of the tested surface. The cumulative wear volume showed a tendency to increase with increase of sliding distance. The wear rate of these composites tested indicated low value as increasing the sliding distance.

목적: 중·고등학생 및 대학생들의 미용칼라 콘택트렌즈 착용실태를 조사하여 올바른 착용 및 관리를 위한 가이드라인을 제시하는 데 기초 자료를 제공하고자 하였다. 방법: 2012년 6월부터 2013년 5월까지 콘택트렌즈를 구매하고자 안경원에 내원한 고객 중 설문에 응한 여자 중·고등학생 및 대학생 500명(중학생: 186명, 고등학생: 158명, 대학생: 156명)을 대상으로 실시하였다. 결과: 총 대상자 500명 중 316명(63.2%)이 미용칼라렌즈를 착용하였으며, 그 중 191명(60.45%)이 2조 이상의 렌즈를 보유하였다. 처음 착용 시기는 중학교 1학년 때가 149명(47.15%)으로 가장 많았고, 친구의 영향이 236명(74.68%)으로 가장 많았다. 미용칼라 콘택트렌즈 선택의 기준은 색상이 140명(43.06%)으로 가장 많았고, 하루 착용시간은 4~6시간이 86명(27.22%)으로 가장 많았으며, 렌즈 교체주기는 1~3개월이 81명(25.63%)으로 나타났다. 친구와 함께 미용칼라 콘택트렌즈를 착용한 경험은 102명(32.28%)이 ‘있다’로 응답하였으며, 보관용기에 대한 소독은 ‘한다’가 220명(69.62%)이었으며, 용기의 교체주기는 1~3개월이 76명(47.27%)으로 가장 높게 나타났다. 미용칼라 콘택트렌즈에 대한 가장 큰 부작용은 건조감(빈도: 2.72±1.05, 정도: 2.79±1.24), 불편감(빈도: 2.43±0.89, 정도: 2.39±1.15) 순으로 나타났다. 결론: 미용칼라 콘택트렌즈의 착용이 점점 증가하고 있으며 처음 착용시기도 어려지고 있으나, 관리방법 및 취급에 대한 지도가 미흡한 실정이다. 따라서 보관용기를 포함한 콘택트렌즈 관리와 교체주기에 대한 충분한 지도 및 지속적인 사후관리가 필요한 것으로 생각된다.

The characteristics of abrasive wear of the rubber matrix composites filled with nano sized silica particles were investigated at ambient temperature by pin-on-disc friction test. The range of volume fraction of silica particles tested are between 11% to 25%. The cumulative wear volume and friction coefficient of these materials on particle volume fraction were determined experimentally. The major failure mechanisms were lapping layers, deformation of matrix, ploughing, deboding of particles and microcracking by scanning electric microscopy photograph of the tested surface. The cumulative wear volume showed a tendency to increase nonlinear with increase of sliding distance. As increasing the silica particles of these composites indicated higher friction coefficient.

This paper studied why middle-aged group is using active wear as casual wear. First, we can think of 'comfort', 'ideal body shape', 'trend', 'functionality', 'economy' for the reasons. We categorized the incentives as 'comfort/functionality pursuits', 'trend/economy pursuits', and 'ideal body shape pursuits'. Studies showed that statistically significant number of men pursue comfort and functionality, and statically significant number of women pursue trend and economy. Second, this study shows that the number of consumers who use the active wear in daily lives is greater than that of those who use it only for outdoor activities. The difference was statistically significant in T-shirts and pants. The most frequent usage was in social activities, and the next frequent usage was in cultural activities. The reason is that currently, middle-aged consumers are actively participating in social gatherings than any other activities. Especially, considering that the men wear active wear more than the women do, development of the product as men's casual wear that is compatible with other apparels will be necessary. We expect this study will be used as the preliminary data for a marketing strategy targeting the middle-ages.

Materials design and processing development proposed in this study, aims at contributing to high wear resistant and friction characteristics. To find wear resistant and friction with inner elbow pipe, it is needed hardness and frictional condition test to be capable of supplying with high Cr casting steel. The result of HTV(heat treatment in vacuum) shows that hardness increased with increasing Cr content in % carbide phase. It was about 7∼10% of hardness improvement compared to original casting elbow pipe. This behavior of the hardness of Cr casting steel was explained by the types of chemical bonds that hold atoms together in Cr carbide phase. Through the friction coefficient and wear loss test, with the increasing of Cr wt% reduction in the coefficient of friction and wear loss.

Cleanroom could be largely classified into industrial cleanroom that can be contaminated by particles and bio-cleanroom that can be contaminated by biological particles. Electrical manufacturing companies producing precision machines and electrical parts essentially have industrial cleanroom facilities and clean technologies to produce defects free products due to particles. Industrial cleanroom should be controlled in respect of 4M1E to prevent from foreign materials of sub-micro unit and to keep out contamination sources from outside. In this paper, a concept for a quantitative methodology to measure the particles from running components was suggested by combining both newly making clean booth such as wear tester and laser particle counter.

The types, properties, and processes for wear resistance are reviewed from the viewpoints of material properties, metallurgy, and tribology. Though materials such as ceramics and polymers are used as the wear resistances materials to provide various useful properties, they can offer excellent corrosion and wear resistances as well as mechanical, physical and chemical properties when combined with metal materials. This paper presents, first of all, the concept of surface, kinds of wear resistances and methods based on the characteristics of surface. For that reason classifies wear resistances followed by each surface modification. This, combined with numerous sophisticated wear resistances processes recently developed, makes them the choice of modifications in a large number of applications. This review has been written with an emphasis on wear resistance consisting materials as opposed to metals, ceramics and polymers. It is hoped that this review will serve as a useful source for literature survey as well as an introduction to the subject of wear resistance with materials.

Cleanroom could be largely classified into industrial cleanroom that can be contaminated by particlesand bio-cleanroom that can be contaminated by biological particles. Electrical manufacturing companies such as precision machines and electrical parts essentially have industrial cleanroom facilities and clean technologies to produce defects free products due to particles.Industrial cleanroom should be controlled in respect of 4M1E to prevent from foreign materials of submicro unit and to keep out contamination sources from outside. In this paper, a concept for a quantitative methodology to measure the particles from running components was suggested by combining both newly making clean booth such as wear tester and laser particle counter.

Diamond-like carbon (DLC) films have been widely used in many industrial applications because of their outstanding mechanical and chemical properties like hardness, wear resistance, lubricous property, chemical stability, and uniformity of deposition. Also, DLC films coated on paper, polymer, and metal substrates have been extensively used. In this work, in order to improve the printing quality and plate wear of polymer printing plates, different deposition conditions were used for depositing DLC on the polymer printing plates using the Pulsed DC PECVD method. The deposition temperature of the DLC films was under 100˚C, in order to prevent the deformation of the polymer plates. The properties of each DLC coating on the polymer concave printing plate were analyzed by measuring properties such as the roughness, surface morphology, chemical bonding, hardness, plate wear resistance, contact angle, and printing quality of DLC films. From the results of the analysis of the properties of each of the different DLC deposition conditions, the deposition conditions of DLC + F and DLC + Si + F were found to have been successful at improving the printing quality and plate wear of polymer printing plates because the properties were improved compared to those of polymer concave printing plates.

The characteristics of abrasive wear on sliding speed of glass fiber reinforcement (GF/PUR) composites were investigated at ambient temperature by pin-on-disc friction test. The cumulative wear volume, friction coefficient and surface roughness of these materials on sliding speed were determined experimentally. The major failure mechanisms were lapping layers, deformation of resin, ploughing, delamination, and cracking by scanning electric microscopy (SEM) photograph of the tested surface. As increasing the sliding speed the GF/PUR composites indicated higher friction coefficient. The surface roughness of the GF/PUR composites was increased as the sliding speed was higher in wear test.

High hardness steel generally means its hardness over HRC45. This using CBN tools for turning. Tool breakage and damage during turning process cause material loss and additional tool cost. If it is predicted during the process and accumulate this data as a turning parameter it will be of help to turning mechanism understanding. For this purpose neural technology give beneficial as prediction, categorization, searching and enable nolinear function for pre-diagnosis algorithm. In this study we appraise the accuracy of prediction by applying backpropagation neural networks (BPNs) method in the high hardness steel turning.

Carbon/epoxy woven composites are prominent wear-resistant materials due to the strength, stiffness, and thermal conductivity of carbon fabric. In this study, the effect of oilabsorption on the wear behaviors of carbon/epoxy woven composites was investigated. Wear tests were performed on dry and fully oil-absorbed carbon/epoxy woven composites. The worn surfaces of the test specimens were examined via scanning electron microscopy to investigate the wear mechanisms of oil-absorbed carbon/epoxy woven composites. It was found that the oil absorption rate was 0.14% when the carbon/epoxy woven composites were fully saturated. In addition, the wear properties of the carbon/epoxy woven composites were found to be affected by oilabsorption. Specifically, the friction coefficients of dry and oil-absorbed carbon/epoxy woven composites were 0.25-0.30 and 0.55-0.6, respectively. The wear loss of the oilabsorbed carbon/epoxy woven composites was 3.52×10-2 cm3, while that of the dry carbon/epoxy woven composites was 3.52×10-2 cm3. SEM results revealed that the higher friction coefficient and wear loss of the oil-absorbed carbon/epoxy woven composites can be attributed to the existence of broken and randomly dispersed fibers due to the weak adhesion forces between the carbon fibers and the epoxy matrix.