• Proceedings of the PSK Conference
• /
• 2001.10a
• /
• pp.155.2-156
• /
• 2001

• Proceedings of the KIPE Conference
• /
• 2012.07a
• /
• pp.319-320
• /
• 2012

극한 조건을 요구하는 오토모티브 어플리케이션은 일반 산업용 제품으로 접근 어려운 분야 이다. 세미크론은 오랜 경험을 통하여 고객의 요구에 맞는 솔루션을 가지고 있다. 전력모듈만을 필요로 하는 고객에게는 SKiM을 추천하며, 제어기와 DC 링크를 포함 전력변환 장치를 원한다면 SKAI를 추천한다.

• Proceedings of the Membrane Society of Korea Conference
• /
• 1993.06a
• /
• pp.97-119
• /
• 1993

폐수처리 분야에 대한 막분리기술의 적용은 산업 전분야에서 그 성능을 입증받고 널리 활용되고 있는 단계이다. 막분리 기술은 단순히 폐수를 처리한다는 개념이 아니라 폐수중에 함유된 유효물질을 회수하여 재사용한다는 점과 폐수중의 물을 높은 수율로 회수하여 재사용한다는 측면, 폐수 오염원의 부하를 크게 줄여준다는 측면에서 많은 잇점을 가지고 있다. 이러한 특징은 각 분야의 제조공정을 "Closed-loop system화" 및 "Zero Discharge" 개념으로 운전함으로써 환경오염의 방지와 더불어 자원의 재활용에 의한 원가절감 효과를 가져올 수 있게 하였다.절감 효과를 가져올 수 있게 하였다.

• Proceedings of the PSK Conference
• /
• 2001.10a
• /
• pp.141.1-141.1
• /
• 2001

• Steel and Composite Structures
• /
• v.21 no.2
• /
• pp.249-266
• /
• 2016

The interest of this article lies in the proposition of using bionic method to develop a new sound absorber and analyze the efficient of this absorber in a ski cabin. Inspired by the coupling absorption structure of the skin and feather of a typical silent flying bird - owl, a bionic coupling multi-layer structure model is developed, which is composed of a micro-silt plate, porous fibrous material and a flexible micro-perforated membrane backed with airspace. The finite element simulation method with ACTRAN is applied to calculate the acoustic performance of the multi-layer absorber, the vibration modal of the ski cabin and the sound pressure level (SPL) near the skier's ears before and after pasting the absorber at the flour carpet and seats in the cabin. As expected, the SPL near the ears was significantly reduced after adding sound-absorbing material. Among them, the model 2 and model 5 showed the best sound absorption efficiency and the SPL almost reduced 5 dB. Moreover, it was most effctive for the SPL reduction with full admittance configuration at both the carpet and the seats, and the carpet contribution seems to be predominant.

• Journal of rehabilitation welfare engineering & assistive technology
• /
• v.11 no.1
• /
• pp.9-14
• /
• 2017

Preschool children to do production and acquisition of phonological system from birth to 8 years of age. If a child has hearing loss, he/she has a lot of difficulties to hear sound. The problem of auditory perception can causes limited speech acquisition, delayed language development, and communication disorders. It also affects learning, social and emotional development. Early detection and diagnosis of hearing loss are important for intervention. However, it may be difficult to detect if the degree of hearing loss are slight and/or it appears only on some frequencies. In cases of these kinds of hearing losses, it is often difficult to provide aural intervention. The goal of this study is to discuss the interpretation of audiological evaluation in case of mild-to-moderately severe asymmetric ski-slop sensorineural hearing loss, analyze communication problems, and concerning about audiological, and speech-language pathological rehabilitation.

• Journal of Preventive Medicine and Public Health
• /
• v.2 no.1
• /
• pp.81-87
• /
• 1969

Three Combinations of cloths were evaluated for the protective effects of different kinds of clothings in cold environments. Table 1 shows the components of the three models of clothings. A prototype was made by putting a sheet of vinyl at the middle layer of raw cotton in a fabric-quilt cloths. A glove mannequin was covered by each of these cloths. The globes contained 1,000 cc of hot water about $40^{\circ}C$. Tele-thermistors were fixed in order to check the temperature of cloths space and water temperature for evaluation of calorie-loss and climate of clothings. Results are summarized as follows: 1) Without wind, there is no significant difference of air temperatures between sti-parka and quilt-wear clothing. 2) The prototype with vinyl sheet best protects against wind, the next is the ski-parka. Quilt-wear protects the least. 3) It is well-known that a working-clothing needs not have any separate liners nor outers. 4) For innermost layer of a clothing preventing cold, a cotton-fabrics is recommended and a water-proof cloths for outer layer. 5) Heat-loss was calculated from the cooling degrees of water. Calorie-loss was $910cal/m^2/hr$. when bared, but with the prototype of vinyl sheets the calorie-loss was $350cal/m^2/hr$. (38.5% of bared). Quilt-wear and ski-parka were 380(41.8%) and $440cal/m^2/hr$. (48.4%) respectively.

• Journal of Broadcast Engineering
• /
• v.18 no.3
• /
• pp.401-408
• /
• 2013

In this paper, we propose a method that automatically detects organs having similar appearances in medical images by learning both context and appearance features. Since only the appearance feature is used to learn the classifier in most existing detection methods, detection errors occur when the medical images include multiple organs having similar appearances. In the proposed method, based on the probabilities acquired by the appearance-based classifier, new classifier containing the context feature is created by iteratively learning the characteristics of probability distribution around the interest voxel. Furthermore, both the efficiency and the accuracy are improved through 'region based voting scheme' in test stage. To evaluate the performance of the proposed method, we detect femur and tibia which have similar appearance from SKI10 knee joint dataset. The proposed method outperformed the detection method only using appearance feature in aspect of overall detection performance.

• Journal of the Korean Institute of Landscape Architecture
• /
• v.22 no.3
• /
• pp.151-162
• /
• 1994

This is a comparative study on the use pattern and satisfaction of skiers between the suburban skiing ground and the resort one. The purpose of this study is to provide basic data for the planning and the management of skiing ground. The sites of case study are Yong Pyung Ski Resort (Resort type) and Bears Town(Suburban type). Data were collected from questionaire. A total of 420 questionaires were completed. And data were subjected to following analysis: First, the descriptive statistics(mean, chi-square analysis etc.) were used to compare the characteristics of the users and the use pattern of two sites. Second, factor analysis was utilized to reduce 22 satisfaction items into the smaller number of factors. Third, regression analysis was used to find the factors affecting users' overall satisfaction in each skiing ground. The findings of this study are as follows: First, it was proved that the characteristics of users between tow sites were different in terms of age, income, and skill level. Second, it was proved that the use pattern between two sites were different in terms of travel distance from home, traffic mode, length of stay, accommodation type, and the money spent per day. Third, By a principal component factor analysis several factors of satisfaction are found: In physical terms, they are 'slope and life facilities', 'recreation and lodge facilities', 'accessibility', 'crowding', and 'landscape'. In psychological terms, they are 'skiing skills and thrills', and 'relaxation and freedom'. Forth, As the result of the stepwise regression analysis, it was yielded that 'relaxation/and freedom' was most important factor to predict the overall satisfaction in both skiing ground. And it was proved that not only physical factors but also phychological(need gratifying) factors were important sources of the satisfaction.

• Korean Journal of Applied Biomechanics
• /
• v.27 no.4
• /
• pp.257-262
• /
• 2017

Objective: This study aimed to investigate the differences in skiing time and vertical ground reaction force (vGRF) between the basic parallel turn and short turn. Method: Eleven alpine ski instructors (age: $28.73{\pm}4.29yrs$, height: $172.36{\pm}6.30cm$, body mass: $71.45{\pm}9.16kg$, career: $11.09{\pm}2.70yrs$) participated in this study. Each skier was asked to perform a basic parallel turn and short turn on a $16^{\circ}$ groomed slope. A foot pressure measurement system was used to measure the skiing time and vGRF under the three plantar regions (forefoot, midfoot, rearfoot). Results: Skiing time decreased significantly in all three phases during the short turn (p<.05). In the initiation phase, the vGRF showed a greater decrease on the midfoot and rearfoot during the short turn (p<.05). In the steering phase 1, the vGRF showed a greater increase on the forefoot and decreased on the midfoot during the short turn (p<.05). In the steering phase 2, the vGRF showed a greater increase on the forefoot and rearfoot during the short turn (p<.05). Conclusion: Our findings proved that the skiing time and vGRF changed during the short turn. Consequently, we suggest that recreational skiers should decrease the skiing time of the steering phase compared to that of the initiation phase and increase the vGRF on the forefoot and rearfoot in the steering phase.