• 제목/요약/키워드: internal objects

검색결과 289건 처리시간 0.024초

다중상태 소나시스템을 적용한 표적반향음 연구 - Part I : 측정시스템 설계 (Investigation of Target Echoes in Multi-static SONAR System - Part I : Design for Acoustic Measuring System)

  • 배호석;지윤희;김완진;김우식;김재수;윤성웅
    • 한국해양공학회지
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    • 제28권5호
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    • pp.429-439
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    • 2014
  • The target echoes contain information on the target such as the orientation, kinematics, and internal structure, as well as the external geometrical shape of the target. In addition, the pattern of the target echoes depends on the arrangement of the transmitters and receivers in space. Therefore, the study of the target echoes in a multi-static SONAR system can be useful for detecting and tracking submerged objects using an underwater surveillance system. For this purpose, an acoustic measuring system for multi-static target echoes was designed and tested in an acoustic water tank. Some preliminary data are presented and discussed.

Reproducibility of the Isokinetic Joint Torque as a Rotator Cuff Weakness Test Protocol in Patients With Rotator Cuff Tendinitis

  • Kim, Soo-yong;Oh, Jae-seop
    • 한국전문물리치료학회지
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    • 제24권3호
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    • pp.21-29
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    • 2017
  • Background: The measurement of the strength of the shoulder muscles is an important element of the overall assessment of patients with various shoulder disorders. However, the clinical utilization of this measurement is dependent on its reproducibility. Objects: To explore the reproducibility of the measurements derived from testing of the isokinetic strength of shoulder muscles in patients with tendinitis of the rotator cuff. Methods: A total of 20 patients with tendinitis of the rotator cuff participated in this study and were assessed twice in 1 week. Isokinetic testing was performed concentrically for shoulder flexors, abductors, and external rotators and eccentrically for the shoulder extensors, adductors, and internal rotators. The relative and absolute reproducibility of the peak torque (PT) and ratios were assessed using intra-class correlation coefficients (ICC), standard error of measurement (SEM), and minimal clinically important difference (MCID), respectively. Results: Overall, high to excellent ICC, clinically acceptable SEM and MCID values were obtained for the PT (ICC: .83-.95, SEM: 1.2%-9%, MCID: 3.4%-25%) and ratios (ICC: .85-.93, SEM: 5.1%-10%, MCID: 14.2%-27.6%). Conclusion: These findings suggest that isokinetic tests may be effectively utilized for the determination of shoulder strength profiles and appropriate position are recommended to perform test without pain in patients with tendinitis of the rotator cuff.

공항주변 계획된 장애물에 의한 계기절차 및 전파간섭 연구 (A Preliminary Study on Instrument Procedures and Frequency Interference with a planned Obstacle around an Airport)

  • 김도현;홍승범
    • 한국항공운항학회지
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    • 제25권4호
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    • pp.24-30
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    • 2017
  • Obstacle defines all fixed and mobile objects, or parts thereof, that are located on an area intended for the surface movement of aircraft or extend above a defined surface intended to protect aircraft in flight or stand outside those defined surfaces and that have been assessed as being a hazard to air navigation. Aircraft operations are based on electronic supporting systems using radio frequencies to assist pilots. These frequencies can receive outside interference that change their courses or power, such as distortion, attenuation or reinforcements by an obstacle. This is a preliminary case study that shows the relation of instrument flight procedures and the degree of interferences introduced by a planned obstacle, which is a main bridge post, within the service volume of the radio navigation aids. For the purpose of this study, the case airport's data and it's VOR/DME and ILS systems' limitations are analyzed, as well as the relation of interferences between the obstacle and navigation aides were reviewed with the internal regulations in Korea.

멀티미디어 데이터를 지원하기 위한 SQL 확장 (SQL Extension for Supporting Multimedia Data)

  • 이중화;박유현;하창석;김경석
    • 한국멀티미디어학회논문지
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    • 제2권2호
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    • pp.109-119
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    • 1999
  • 멀티미디어 데이터의 중요성과 활용도가 증가됨에 따라 데이터베이스에서 멀티미디어 데이터를표현하고 처리하기 위한 연구가 필요하게 되었다. 데이터베이스에서 멀티미디어 데이터를 처리하기 위해서는 멀티미 디어 데이터를 정확히 모텔링하여 데이터 형 및 연산들을 정의하고 이를 지원하는 질의어를 만드는 것이 필요하다. 따라서 본 논문에서는 GMT로 멀티미디어 데이터를 모델링하여 데이터베이스에서 멀티미디어 데이터를 지원할 수 있도록 한다. 또한 SQL을 확장하여 멸티미디어 데이터를 위한 새로운 형을 정의하고 효과적으로 질의해 낼 수 있는 질의어인 MMSQL을 제안한다. 특히, MMSQL에서는 멸티미디어 데이터 안의 객체 사이 (내부적) 또는 여러 멀티미디어 데이터 사이(외부적)의 시.공간적 관계를 표현할 수 있는 방법을 제공한다.

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언어(특히 의미)와 인지과학 (Language (Meaning) and Cognitive Science)

  • 이정민
    • 한국인지과학회:학술대회논문집
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    • 한국인지과학회 2005년도 춘계학술대회
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    • pp.23-27
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    • 2005
  • 언어 특히 의미에 대한 연구와 마음의 구조를 연구하는 인지과학이 어떻게 중요한 관계를 가지고 발전하는가를 살펴보기로 한다. 언어의 구조는 마음의 구조의 일부라고 본 촘스키의 입장에 동조하면서도 의미의 구조에 대해서 소극적인 입장에 서는 그의 입장에서 자유롭게 벗어나 발전하고 있는 의미에 대한 연구를 조명하고 전망하기로 한다. 언어의 의미는 내면적(internal)인 것인가 외부적(external)인 것인가 의미 내용(content)과 맥락(context)의 관계는 어떠한가, 왜 정보구조가 중요한가 등을 점검한다.

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현대패션에 나타난 꽃 이미지의 표현특성 (Expressive Characteristics of Floral Images in Contemporary Fashion)

  • 김선영
    • 복식
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    • 제60권8호
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    • pp.1-14
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    • 2010
  • This study is a discussion of the expressive characteristics of contemporary fashion design with floral images. It aims to help understand the overall trends of contemporary fashion design and textile motif design and expand the potential expression fields of originative design to natural objects such as flowers. Methodologically the study analyzed 976 pieces of data gathered from Haute Couture and Pr$\hat{e}$t-$\grave{a}$-Porter collections of 2005S/S-2009F/W, according to their types of expression. The study results show a share of 42.7% for plane type expressions by printing or weaving and a share of 51.5% for relief type expressions, compared with 5.7% for solid type expressions. However, those expressions represented elegant femininity with emphasis on formative beauty and were applied to fashion accessories or hair adornments. The expressive characteristics found from the analysis were represented by natural images, feminine elegance, and decorative aesthetics of handicrafts. Flowers in the contemporary fashion purify the internal emotions of humankind stand for personality and beauty in many different ways of expression and serve as a means of expressing more artistic values breaking out of stereotype.

현대 머리장식에 표현된 맥시멀리즘의 표현기법과 미적 의미에 관한 연구 (A Study of Expression Methods and Aesthetic Meanings of Maximalism Appeared in Modern Hair Ornaments)

  • 문지애;권기영
    • 한국의류산업학회지
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    • 제15권4호
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    • pp.493-503
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    • 2013
  • This study analyzes expression methodology and aesthetic meanings in modern hair ornaments that adopt maximalism. Maximalism has appeared in various hair ornaments throughout history. Hair dresses are used for many reasons related to class, social position, religious beliefs, and occupation throughout the Eastern and Western hemispheres. A higher class and social position was often denoted by a fancier and bigger hairdress. In modern society maximalism is expressed in literature, expressionism, maxi-marketing, exaggerative advertisements, and symbolic architecture. Formative expression methodologies in modern hair ornaments that adopt maximalism are transform, overlapping & exaggeration, and mixing & edition. The aesthetic meanings of maximalism in hair ornaments are the reinterpretation of retro ornaments, the exaggeration of internal self-expression, humorous symbolic objects, and the conveyance of a social critical message. The advantages of maximalism help people communicate and co-provide an abundant life. These are expected to create significant and numerous positive impacts in society. In addition, the continued efforts on the investment in hair ornaments that express Maximalism well as a fashion trend shows that further study on the persistence, practicality and recognized design inconvenience in the aesthetic value are needed.

색채 감성의 위계 구조에 대한 탐구 (A Study on the Hierarchical Structure of Color Sensibility)

  • 박창호
    • 인지과학
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    • 제19권1호
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    • pp.41-56
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    • 2008
  • 감성에 대한 기존 연구들은 감성 요인들을 추출하는 데에 치중하여 왔으며, 감성의 내적 구조에 큰 관심을 보이지 않았다. 본 연구는 감성에 감각적 측면과 정서적 측면이 있으며, 이들이 대상의 속성을 묘사하는 객관형용사와 경험자의 심리를 묘사는 주관형용사에 각각 상응한다고 보았다. 국어학적 분류와 경험적 평정을 통해 최종 선별된 43 개의 객관형용사 군과 21 개의 주관형용사 군에 대해 요인분석을 하여, 감각적 측면(객관형용사)의 다섯 요인과 정서적 측면(주관형용사)의 세 요인을 추출하였다. 두 측면의 요인점수들에 대한 다중회귀분석을 통해, 감각적 측면과 정서적 측면 간의 위계 구조를 도출하였다. 그 결과 감성의 정서적 측면은 여러 감각적 요인의 결합으로 파악될 수 있었다. 본 연구의 제한점과 의의를 논의하였다.

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착용환경을 고려한 안테나 설계와 손 부착 시 HAC 지수의 관찰 (A Handset Antenna Design with the Real-Portable Mock-Up and Its HAC with the Hand-Effect)

  • 강승택;최동근;전진수;박정훈
    • 한국위성정보통신학회논문지
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    • 제9권1호
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    • pp.102-106
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    • 2014
  • 본 논문에서는, 이중대역 안테나를 가진, 인체 거치용 단말장치 모사구조의 HAC(보청기 EMC) 지수가 실재환경으로부터 받는 영향에 대한 관찰이 이뤄진다. 첫째, 부착형 이동통신 장치에 필수적인 인접 구조를 고려한 이중대역 내장형 안테나가 설계된다. 이 설계는 모사구조의 제작을 통해 실제의 모습을 갖춘다. 둘째, 이 장치의 HAC 지수는 손에 부착하기 전과 후에 대해 모의시험 및 측정을 통해 얻어진다. 특히, 실재 장치의 전자장 모의시험 결과는 표준 측정법에 의해 타당성이 확인된다. 마지막으로, HAC 기주는 대역, 실장환경, 손(인체) 효과의 관점에서 분석된다.

항바이러스 효과에 응용되는 한약의 연구 동향 (A tendency of herbal medicines on anti-viral effect)

  • 임성우
    • 대한한방종양학회지
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    • 제4권1호
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    • pp.199-209
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    • 1998
  • In order to find antiviral effect against Human immunodeficiency virus(HIV), Herpes simplex virus type I(HSV-1) and II(HSV-2) from herb medicines, publicated 29 paters on anti-viral effect of herbal medicines and a convenient virus-induced cytopathic effect (CEP) inhibition assay was introduced. The major virus on experiment are HIV, Hepatitis B virus and HSV-1,2. Those of other studies showed inhibition of infected virus DNA replication and screening test of herbal medicines. More than 15 extractions were prepared by pure water boiling from herbal medicines, and their toxicity of infected cell and anti-viral activities were evaluated. Among them, the major part of herbal medicines showed cell stability compared with the contrast. Cytotoxic concentration (CC) of the $H_2O$ extracts of Padoo against HIV was <4.0, Hyungbangpaedoksan against HIV was 9.3, Whangyonhaedoktang against HIV-1 and HSV-2 was 15.3. These are high level cytotoxic concentration compared with the contrast. But antiviral effect was unable to figure out for selective $index(SI)=CC_{50}/EC_{50}$. The other herbal medicines were unable to showed potent anti-HIV and anti-HSV activity. The antiviral activation using herbs in this thesis have unlimited objects, to select research object will help to show the direction of antiviral drug development that have less side effect and more excellent efficiency.

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