• 대한임베디드공학회논문지
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• 제12권1호
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• pp.35-41
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• 2017

We propose a face recognition and notification system that can transform visual face information into tactile signals in order to help visually impaired people. The proposed system consists of a glasses type camera, a mobile computer and an electronic cane. The glasses type camera captures the frontal view of the user, and sends this image to mobile computer. The mobile computer starts to search for human's face in the image when obstacles are detected by ultrasonic sensors. In a case that human's face is detected, the mobile computer identifies detected face. At this time, Adaboost and compressive sensing are used as a detector and a classifier, respectively. After the identification procedures of the detected face, the identified face information is sent to controller attached to a cane using a Bluetooth communication. The controller generates motor control signals using Pulse Width Modulation (PWM) according to the recognized face labels. The vibration motor generates vibration patterns to inform the visually impaired person of the face recognition result. The experimental results of face recognition and notification system show that proposed system is helpful for visually impaired people by providing person identification results in front of him/her.

• 말소리와 음성과학
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• 제2권4호
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• pp.229-238
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• 2010

This study investigates the differences in acoustic parameters in vowel space across hearing loss, gender and vowels. The parameters include F1, F2, Euclidean Distance between vowels, and vowel triangular area comprised of /i/, /a/ and /u/. For this study, 20 hearing-impaired and normal hearing adults as a control group were asked to read 7 Korean vowels (/a, $\wedge$, o, u, w, i, $\varepsilon$/). Subjects' readings were recorded by NasalView and analyzed by Praat. Results showed that F1 were significantly higher in the hearing impaired group than in the normal hearing group, higher in the female group than in male group, and higher in low vowels than in high vowels. And the means of F2 was significantly higher in the hearing impaired group than in normal hearing group, higher in high vowels than in low vowels, and there was no difference between male and female group. Secondly, Euclidean distance between vowels was significantly shorter in the hearing-impaired group than in the normal group. Finally, acoustic vowel space area was significantly smaller in the hearing-impaired group than in the normal hearing group. The hearing-impaired group showed that front vowels tended to be backed and back vowels to be fronted.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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• pp.59-61
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• 2013

The purpose of this study was to present the necessary data concerning the selection and development of floor-coverings in view of slipperiness by comparing the relationship between CSR measured with O-Y·PSM and RCOF calculated from the result of gait analysis. CSR was calculated from maximum tensile load(Pmax) divided by perpendicular load(785N) when pulled 18 degrees upward the moment the bottom of the slip piece contacted the surface of the test piece. RCOF was calculated based on Fy/Fz from when horizontal load reached the maximum point within the sections from the moment the front of outsole touched the test piece to when pulled off the test piece. The results from the research were as follows: (1) Range of CSR was 0.15-1.02, which meant the differences of slipperiness of the test pieces definitely showed up. (2) RCOF are inadequate to express the characteristic about the slipperiness of the floors, since there were no differences between the test pieces.

• 한국해양공학회지
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• 제11권3호
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• pp.200-211
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• 1997

Most recently, offshore Engineering & Construction field is concerned about integration management technology such as CIM(Computer Integrated Manufacturing), PDM(Product Data Management) and Enterprise Information Engineering in order to cope with the rapid change of engineering and manufacturer specification as per owner's requirement during construction stage of the project. System integration and integrated data modeling with relational database in integration management technology improve the quality of product and reduce the period of the construction project by reason of owing design information jointly. This paper represents the design methodology of system integration using Business Process Reengineering by the case study. The case study is about the offshore plant material information process from front end engineering design to detail engineering for the construction and the basis of monitoring system by integrating and sharing the design information between the 2D intelligent P&ID and 3D plant modeling using relational database. As a result of the integrated data modeling and system integration, it is possible to maintain the consistency of design process in point of view of the material balancing and reduce the design assumption/duration. Near future, this system will be expanded and connected with the MRP(Material Requirement Planing) and the POR (Purchase Order Requisition) system.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.481-484
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• 2005

직접 변환 방식은 혼합기를 사용하는 구조와 6-단자 회로를 사용하는 구조를 갖는다. 6-단자 회로를 사용하는 방식은 혼합기를 이용하는 방식보다 회로 구조가 간단하고 집적화도 쉬운 장점을 가지고 있다. 그리고 다이오드 작동을 위한 전압이 혼합기를 작동시키기 위한 전압보다 낮은 장점을 가지고 있으며 LO에서의 소비전력이 낮고 광대역으로 구현하기 유리한 점을 보이고 있다. 본 논문에서는 branch-line 결합기로 구성되는 6-단자 회로와 ring hybrid 결합기로 구성되는 6-단자 회로를 설계하고 성능을 비교분석하였다.

• Journal of Power Electronics
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• 제12권5호
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• pp.813-820
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• 2012

This paper presents the development of a software supported acquisition system for metrological verification and testing of the equipment for monitoring and analysis of the basic electrical power quality parameters. The described procedure consists of two functionally connected segments. The first segment involves generation of the reference three-phase voltage signals, including the possibility of simulation of the various power quality disturbances, typical for electrical power distribution networks. The second part of this procedure includes the real-time recording of power quality disturbances in three-phase distribution networks. The procedure is functionally supported by the virtual instrumentation concept, including a software application developed in LabVIEW environment and data acquisition boards NI 6713 and NI 9215A. The software support of this system performs graphical presentation of the previously generated and recorded signal waveforms. A number of the control functions and buttons, implemented on the virtual instrument front panels, are provided to adjust the basic signal acquisition, generation and recording parameters.

• 한국해양환경ㆍ에너지학회지
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• 제5권1호
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• pp.11-18
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• 2002

방향 및 주파수 성분을 포함하는 파랑집중에 의해 다방향 쇄파를 생성하였으며, 등기울기 및 등진폭 스펙트럼 모델을 적용하였다. 생성된 다방향 쇄파는 초기쇄파, 단일쇄파 다중쇄파로 구분된다. 다방향 쇄파의 특성을 파정 기울기 및 비대칭성으로 정의되는 파형인자들의 함수로 고찰하였다. 또한 파랑집중의 효율성 관점에서 쇄파 파랑특성의 전개를 분석하였다. 파정 전면 기울기 및 연직 비대칭성은 쇄파과정에 영향을 미치는 중요한 인자이나, 파정후면 기울기 및 수평 비대칭성은 쇄파 과정에서 거의 상수 값을 갖는다. 방향 성분의 중첩은 파랑집중의 효율성을 크게 강화하며, 이는 다방향파의 쇄파 특성이 일방향파의 쇄파 특성과 상이함을 나타낸다.

• 대한한의학원전학회지
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• 제21권1호
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• pp.153-162
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• 2008

Three Eum and Three Yang[三陰三陽] is a way of studying the changing of nature from a Eum(陰) and Yang(陽) point of view, Juhakhae(周學海) divides this into two dimensions. The first is the concept of dividing the exterior part of the body excluding the organ into 6 divisions as Eumyang(陰陽) of front and rear characteristic. The second is the concept of dividing the systematic bio-activity of the central organ into another 6 dimensions. The former concept is illustrated in the body as a certain meridian controlling a certain field of the body, while the latter is presented as a certain organ performing an activity of Gi(氣). Three Eum and Three Yang[三陰三陽] is not based on fixed substances. but it is a thought process model of observing the structural-functional changes of the body in disease state. Therefore, by understanding Three Eum and Three Yang[三陰三陽] of field and activity of Gi(氣) respectively and comprehensively putting these into practice, we will be able to approach the essence of the disease state in a more precise manner.

• Wind and Structures
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• 제24권6호
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• pp.565-578
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• 2017

The meteorological model WRF is used to investigate the wind circulation in Valle Camonica, Italy, an alpine valley that includes a large subalpine lake. The aim was to obtain the information necessary to evaluate the wind potential of this area and, from a methodological point of view, to suggest how numerical modeling can be used to locate the most interesting spots for wind exploitation. Two simulations are carried out in order to analyze typical scenarios occurring in the valley. In the first one, the diurnal cycle of thermally-induced winds generated by the heating-cooling of the mountain range encircling the valley is analyzed. The results show that the mountain slopes strongly affect the low-level winds during both daytime and nighttime, and that the correct setting of the lake temperature improves the quality of the meteorological fields provided by WRF significantly. The second simulation deals with an event of strong downslope winds caused by the passage of a cold front. Comparisons between simulated and measured wind speed, direction and air temperature are also shown.

• 비교문화연구
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• 제24권
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• pp.19-31
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• 2011

This article examines the historical view of Benito $P{\acute{e}}rez$ $Gald{\acute{o}}s$ in his historical novel named "Zaragoza" and "$C{\acute{a}}novas$" by comparing with Numancia of Cervantes. In front of the national survival crisis, $Gald{\acute{o}}s$ recognizes that it is necessary that Spain should recover humanity and morality on basis of the krausist ideal. The krausists warned subjective idealism, stressing on free-will and moral conscience in a harmonious balance of rationality. Without refusing patriotism, they warned egoistic patriotism deformed by national selfishness or nationalism. Giner de los Ríos insisted on a necessity of harmonizing national inclination and universal one. $Gald{\acute{o}}s$ emphasizes that the identity of Spain is not possession of privileged class but sweat and tears of the mass of people in daily life. He represents Efemera as the ideal history on the basis of Unamuno's 'intrahistoria', by which, instead of $Luk{\acute{a}}cs^{\prime}$ progressive history, we can peep into a historical poetics of human free nature and vividness of discontinuous and endless shifting. According to the sub-history, we come to the conclusion that $Gald{\acute{o}}s$ and Cervantes would lay emphasis on sub-history, aiming to essence of Spanish soul originated from national landscape and people's daily life.