• 제목/요약/키워드: An exclusive program

검색결과 64건 처리시간 0.024초

A Parameter Selection Method for Multi-Element Resonant Converters with a Resonant Zero Point

  • Wang, Yifeng;Yang, Liang;Li, Guodong;Tu, Shijie
    • Journal of Power Electronics
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    • 제18권2호
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    • pp.332-342
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    • 2018
  • This paper proposes a parameter design method for multi-element resonant converters (MERCs) with a unique resonant zero point (RZP). This method is mainly composed of four steps. These steps include program filtration, loss comparison, 3D figure fine-tuning and priority compromise. It features easy implementation, effectiveness and universal applicability for almost all of the existing RZP-MERCs. Meanwhile, other design methods are always exclusive for a specific topology. In addition, a novel dual-CTL converter is also proposed here. It belongs to the RZP-MERC family and is designed in detail to explain the process of parameter selection. The performance of the proposed method is verified experimentally on a 500W prototype. The obtained results indicate that with the selected parameters, an extensive dc voltage gain is obtained. It also possesses over-current protection and minimal switching loss. The designed converter achieves high efficiencies among wide load ranges, and the peak efficiency reaches 96.9%.

ATmega16 마이크로컨트롤러를 이용한 전력선통신용 가시광 무선통신 시스템 구현 및 수신 특성 분석 (A Study on Realization and Receiving Characteristic Analysis of Visible Light Wireless Communication System for Power Line Communications Using ATmega16 Microcontroller)

  • 윤지훈;홍근빈;김용갑
    • 전기학회논문지
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    • 제59권11호
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    • pp.2043-2047
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    • 2010
  • This study is to solve problems of depletion of RF bandwidth frequency, confusion possibility, security that current wireless communications system have and is to confirm possibility of applying next generation network. To solve problems of current wireless communications system, visible light communications system for power line communications using ATmega16 Microcontroller is was realized and receiver property was analyzed. PLC exclusive chip APLC-485MA, Microcontroller ATmega16, 5pi bulb type LED and high flux LED, visible light receiving sensor LLS08-A1 were used for transmitter and receiver. Performance was analyzed by designed program and an oscilloscope. It was showed average 20% improved receiver rate rather than bulb type LED in the case of high flux LED through voltage change rate on communication distance and LED type of distance between 10 to 50 cm. The blue LED showed the best performance among measured LED types with above 10% of voltage decreasing rate. But As it gradually becomes more distant, the precise date was difficult to obtain due to weak light. To overcome these sort of problems, specific values such as changing conditions and efficiency value relevant to light emitting parts and visible light receiving sensor should be calculated and continuous study and improvements should also be accomplished for the better communications condition.

인공지능 기반 작곡 프로그램 현황 및 제언 (Artificial Intelligence Applications to Music Composition)

  • 이성훈
    • 문화기술의 융합
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    • 제4권4호
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    • pp.261-266
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    • 2018
  • 본 연구는 인공지능 기반 작곡 프로그램 현황을 살펴보고 실정을 고려한 제언을 제공하고자 한다. 인공지능 기반 작곡 프로그램은 기존의 '전문가 시스템' 방식의 알고리즘을 벗어나 심층신경망 이론의 발전 및 빅데이터 처리 기술 향상과 더불어 눈부신 성장을 보이고 있다. 이에 따라 클래식 음악과, 팝음악을 작곡하는데 있어 인공지능 기반 작곡 프로그램이 학계와 산업계에서 다양하게 제안되고 있으며, 최근 수년 사이 대중의 평가도 달라지고 있다. 다만 해당 기술 개발과 관련하여 여전한 한계점들이 분명히 존재하는 바, 대중의 인식 문제, 데이터베이스화되지 않은 가치 있는 사료들의 누락, 관련 법규의 미비, 음악적인 부분보다는 기술적 관점에서 해당 산업이 주도되는 점 등을 개선할 필요가 있겠다. 이 같은 점이 보완된다면, 인공지능 기반 기술은 국가 경쟁력 확보와 유지에 있어 중요한 역할을 해낼 것으로 보인다.

우리나라 항공인력양성 사업의 평가지표 개발에 관한 연구 (A Study on the Development of Evaluation Indicators for the Korea Government-Sponsored Program Fostering Aviation Personnel)

  • 최미선;김형성
    • 항공우주정책ㆍ법학회지
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    • 제27권2호
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    • pp.167-192
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    • 2012
  • 항공 산업은 고용창출 효과가 크고 고부가 가치인 선진국 형 지식기반 산업으로 평가되는 대표적 산업이다. 이러한 시대흐름에 따라 전 세계가 잠재적 경제력의 한축인 항공 산업에 눈을 돌리고 있는 것도 어찌 보면 당연한 일이 아닐 수 없다. 이와 같은 배경 하에 본 연구는 국토해양부에서 범정부적으로 추진 중인 항공인력양성사업의 중요성을 인식하고 급속히 발전하는 항공기술에 대처할 수 있는 항공우주기술 인력 및 잠재적 경제력의 한 축인 항공시장의 전문지식과 실무능력을 겸비한 국제항공 전문가를 석사급 인력을 국내 특성화 대학을 선정 지원하여 항공인력을 양성하는 사업의 평가지표를 개발하는 데 그 필요성을 인식하고, 항공전문가의 검토를 통한 타당성 검증 결과를 도출하였다.

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TV 리얼리티 오디션 프로그램에 표현된 모방 연구 : JTBC<히든 싱어>와 Mnet<너의 목소리가 보여>를 중심으로 (A Study of Imitation within TV Reality Audition Program : Focused on the JTBC and Mnet)

  • 오서현;나건
    • 한국콘텐츠학회논문지
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    • 제19권8호
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    • pp.389-398
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    • 2019
  • 모방은 인간의 역사와 함께 시작된 중요한 문화적 행위이며, 21세기에 들어서는 혁신과 창의성을 위한 필수적인 전략이 되고 있다. 현대 사회에서 지적 재산권의 개념의 등장으로, 모방과 디자인의 이슈는 떼려야 뗄 수 없는 관계가 되었다. 본 연구는 디자인 연구를 위해 시대의 문화정체성을 이해할 필요가 있다는 점에서, '모창'과 '립싱크'를 소재로 한 리얼리티 오디션 프로그램, JTBC<히든 싱어>와 Mnet<너의 목소리가 보여>에 나타난 모방의 의미를 분석하였다. 연구결과는 다음과 같다. 첫째, 모방의 행위 자체는 공정하고 즐거움을 주는 행위이다. 둘째, 모방은 역설적으로 독창성의 힘을 표현하고 있다. 셋째, 모방은 결국 혼합과 변형으로 확장되고 있다. 이러한 일련의 과정들을 통해 모방의 행위가 일방적인 추종을 넘어서서 그것을 창의적으로 개선하려는 의도로 이어지는 과정을 보여준다. 따라서 모방은 창의성의 이슈와 떼려야 뗄 수 없는 개념으로서 서로 배타적인 관계가 아니라 상호보완적인 관계로 다루어져야 한다.

고속도로 TCS 자료를 활용한 동적노선배정의 네트워크 정산과 검증 (Network Calibration and Validation of Dynamic Traffic Assignment with Nationwide Freeway Network Data of South Korea)

  • 정상미;김익기
    • 대한교통학회지
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    • 제26권4호
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    • pp.205-215
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    • 2008
  • 1980년대 후반부터 선진외국에서 ITS 정책과 연구에 대해 관심을 갖기 시작한 이후 정적 노선배정(Static Traffic Assignment)의 현실 정책 응용에 한계에 직면하면서 동적노선배정(Dynamic Traffic Assignment)에 대한 연구가 초점을 받기 시작하였으며 그 결과 급속한 연구 발전이 있게 되었다. 본 연구에서는 현실적인 정책분석 가능성을 고려하여 노선선택행태(route choice behavior)는 거시적 모형이고, 차량의 네트워크 상 동적위치배정(dynamic network loading)은 미시적 모형 그리고 교통류는 단순화된 미시적 모형(microscopic model)이 적용된 시뮬레이션 기반의 Dynameq 프로그램을 활용한 연구를 수행하였다. 본 연구의 핵심 내용은 우리나라 전국 고속도로 네트워크와 동적 O/D자료로 동적노선배정 분석 한 결과인 추정치와 관측 링크 교통량과의 차이를 비교 검증하는 연구를 수행함으로써 모형의 현실적 정책분석 가능성에 대한 판단 기준을 제시하는 것이다. 이를 위하여 우리나라의 고속도로 체계에 있어 영업소에서 영업소 간의 동적 O/D자료가 TCS(Toll Collection System)자료를 통해 정확하게 확보할 수 있다는 점을 이용하였으며, 순수하게 동적노선배정 모형 자체의 현실적 묘사능력을 시간대별 관측 교통량과 비교 검증함으로써 정책응용 가능성을 확인하고자 한 것이다. 또한 동적노선배정 분석 예제로 버스전용차로 정책에 대한 동적 분석과 정책 효과를 분석하였다.

도로안전시설의 사고감소효과 메타분석 : 신호교차로를 대상으로 (A Meta Analysis of the Effects of Road Safety Facilities on Accident Reduction: Focusing on Signalized Intersection)

  • 최지혜;임준범;이수범
    • 대한교통학회지
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    • 제34권4호
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    • pp.291-303
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    • 2016
  • 교차로에서 발생한 교통사고건수는 최근 10년간 지속적으로 증가하였고, 2014년 전체 교통사고의 44%를 차지하면서 교차로는 교통안전에 취약한 도로형태로 주목되고 있다. 특히 선정된 사고다발지점 대다수가 신호교차로를 포함하고 있어, 신호교차로의 안전개선 노력이 우선적으로 필요한 실정이다. 이에 정부는 주로 도로안전시설 개선사업을 시행하여 주어진 예산 내에서 단기간에 높은 효과를 얻을 수 있는 안전개선사업을 수행하고자 한다. 이를 위하여 도로안전시설의 사고감소효과를 확인하는 연구가 지속적으로 등장하고 있으나 독립적으로 수행된 연구별 특성은 종합하기 어렵고, 각 연구결과가 대표성을 갖는데 한계가 있기 때문에 여전히 한정된 예산과 불확실한 도로안전시설 설치효과로 인해 선뜻 안전개선사업을 진행하지 못하고 있다. 따라서 본 연구에서는 메타분석을 통해 기존의 신호교차로 교통사고발생에 영향을 미치는 변인을 활용한 여러 사고예측연구 결과를 종합적으로 검토하고, 각 변인이 대표할 수 있는 개선효과를 도출하고자 하였다. 본 연구에서는 신호교차로 전체 사고건수를 종속변수로 하는 연구 중 19건의 논문을 선정하고 8개 변인에 대한 34개의 개별효과크기(effect size)를 산출하였다. 메타분석 결과, 도로안전시설 설치와 신호교차로 교통사고의 관계는 좌회전 전용차로를 제외하고는 모두 통계적으로 유의하게 감소한 사고영향을 나타내어, 도로안전시설이 사고감소에 영향을 준다는 통계적인 결과자료를 도출하였다. 그 중 도류화설치의 효과크기가 가장 높았으며, 좌회전차로 가속구간, 조명시설, 횡단보도, 우회전 전용차로, 중앙분리대 순으로 효과가 높은 것으로 나타났다.

차세대 해양생명공학사업 추진 전략수립 연구 (A study on Strategic Planning of Marine Biotechnology for Next Generation)

  • 강길모;장덕희;최용진
    • 한국해양바이오학회지
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    • 제6권2호
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    • pp.84-101
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    • 2014
  • The aim of this project is to develop an adaptive and collective National Marine Biotechnology Plan for the next decade(2014~2023) which is able to reflect current and future changing environment. This effective strategy targets to foster marine-derived active bio-materials, marine bioenergy production technology and many promising technologies in order to promote marine biotechnology industry as a next-generation growth engine. Marine biotechnology industry based on R&D activities since 1980 has been growing as an emerging industry. This new field enables to secure exclusive patent rights and to find new potential bio-active materials from the ocean that requires long-term aggressive R&D investments. The current policy direction is to raise appropriate level of R&D investment because the current Korea's national marine biotechnology R&D fund ratio is less than 2% of the total national biotechnology R&D budget. The result shows three major strategies. First, it recommended a research implementation system and supporting policy that includes establishment of open innovation framework for the 'Industry-Academia-Research Institute Collaborations', strategic research planning and enhanced policy making process. Second, it derived state-of-the-art or new technology in many areas. Third, it formulated more detailed execution plans for successful R&D support and set up performance indicator system in related R&D program.

국가필수예방접종 보장범위 확대 시범사업의 정책 내용분석 - 국가필수예방접종 공급방식을 중심으로 - (Policy Content Analysis of the Expanded National Immunization Program in the Republic of Korea)

  • 김춘배;안양희;차병호;김효열;이석구;이중정;박혜숙;신택수;현숙정;고운영
    • 보건행정학회지
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    • 제18권3호
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    • pp.58-89
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    • 2008
  • The purpose of this study was to evaluate comparatively the content of the Expanded National Immunization Program according to the provision method between 2005 and 2006 in Korea. We assessed the impact of the mutually exclusive vaccination policy using the result reports of the 2005 and 2006 Demonstration Project and the related references by the content analysis. The public health centers paid vaccination fees to the private clinic and hospital in the 2005 Demonstration Project in Daegu metropolitan city and Gunpo city. But, the public health centers directly supplied free vaccination services to the children in the 2006 Demonstration Project in Gangneung city, Yangsan city, and Yeongi-gun. The total budgets of 2005 and 2006 Demonstration Project were 6.57 billion won and 0.65 billion won, respectively. The computerized registration rates and timeliness rates of administration of each vaccination had improved all in the 5 Demonstration Project regions. However, the computerized registration rates of most vaccination in Gunpo city were higher than those in the 2006 Demonstration Project regions except hepatitis B. Especially, the computerized registration rate of BCG was 48.3%, but the BCG coverage rate by the follow-up telephone survey was 99.8% in Daegu metropolitan city. The community parents in all the regions were satisfied because of expanding financial and geographical access to immunization coverage. In conclusions, from the aspect of the main outcomes, the implementation of two different financial immunization aids appears to be widely accepted among these parents and to have had an impact on vaccination coverage. In the future, the government must try to enact that the national immunization policy including under-immunised or incompletely immunised groups would be achieved by the affordable method of the public-private dynamics.

가정간호 사업에 대한 의사, 간호사, 진료관련부서 직원 및 환자의 인식 비교 (A Study on Differences of Opinions on Home Health Care Program among Physicians, Nurses, Non-medical personnel, and Patients.)

  • 김용순;임영신;전춘영;이정자;박지원
    • 대한간호
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    • 제29권2호
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    • pp.48-65
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    • 1990
  • The government has adopted a policy to introduce Home Health Care Program, and has established a three stage plan to implement it. The three stage plan is : First, to amend Article 54 (Nurses for Different Types of Services) of the Regulations for Implementing the Law of Medical Services; Second, to tryout the new system through pilot projects established in public hospitals and clinics; and third, to implement at all hospitals and equivalent medical institutions. In accordance with the plan, the Regulation has been amend and it was promulgated on January 9,1990, thus establishing a legal ground for implementing the policy. Subsequently, however, the Medical Association raised its objection to the policy, causing a delay in moving into the second stage of the plan. Under these circumstances, a study was conducted by collecting and evaluating the opinions of physicians, nurses, non-medical personnel and patients on the need and expected result from the home health care for the purpose of help facilitating the implementation of the new system. As a result of this study, it was revealed that: 1. Except the physicians, absolute majority of all other three groups - nurses, non-medical personnel and patients -gave positive answers to all 11 items related to the need for establishing a program for Home Health Care. Among the physicians, the opinions on the need for the new services were different depending on their field of specialty, and those who have been treating long term patients were more positive in supporting the new system. 2. The respondents in all four groups held very positive view for the effectiveness and the expected result of the program. The composite total of scores for all of 17 items, however, re-veals that the physicians were least positive for the- effectiveness of the new system. The people in all four groups held high expectation on the system on the ground that: it will help continued medical care after the discharge from hospitals; that it will alleviate physical and economic burden of patient's family; that it will offer nursing services at home for the patients who are suffering from chronic disease, for those early discharge from hospital, or those who are without family members to look after the patients at home. 3. Opinions were different between patients( who will receive services) and nurses (who will provide services) on the types of services home visiting nurses should offer. The patients wanted "education on how to take care patients at home", "making arrangement to be admitted into hospital when need arises", "IV injection", "checking blood pressure", and "administering medications." On the other hand, nurses believed that they can offer all 16 types of services except "Controlling pain of patients", 4. For the question of "what types of patients are suitable for Home Health Care Program; " the physicians, the nurses and non-medical personnel all gave high score on the cases of "patients of chronic disease", "patients of old age", "terminal cases", and the "patients who require long-term stay in hospital". 5. On the question of who should control Home Health Care Program, only physicians proposed that it should be done through hospitals, while remaining three groups recommended that it should be done through public institutions such as public health center. 6. On the question of home health care fee, the respondents in all four groups believed that the most desireable way is to charge a fixed amount of visiting fee plus treatment service fee and cost of material. 7. In the case when the Home Health Care Program is to be operated through hospitals, it is recommended that a new section be created in the out-patient department for an exclusive handling of the services, instead of assigning it to an existing section. 8. For the qualification of the nurses for-home visiting, the majority of respondents recommended that they should be "registered nurses who have had clinical experiences and who have attended training courses for home health care". 9. On the question of if the program should be implemented; 74.0% of physicians, 87.5% of non-medical personnel, and 93.0% of nurses surveyed expressed positive support. 10. Among the respondents, 74.5% of -physicians, 81.3% of non-medical personnel and 90.9% of nurses said that they would refer patients' to home health care. 11. To the question addressed to patients if they would take advantage of home health care; 82.7% said they would if the fee is applicable to the Health Insurance, and 86.9% said they would follow advises of physicians in case they were decided for early discharge from hospitals. 12. While 93.5% of nurses surveyed had heard about the Home Health Care Program, only 38.6% of physicians surveyed, 50.9% of non-medical personnel, and 35.7% of patients surveyed had heard about the program. In view of above findings, the following measures are deemed prerequisite for an effective implementation of Home Health Care Program. 1. The fee for home health care to be included in the public health insurance. 2. Clearly define the types and scope of services to be offered in the Home Health Care Program. 3. Develop special programs for training nurses who will be assigned to the Home Health Care Program. 4. Train those nurses by consigning them at hospitals and educational institutions. 5. Government conducts publicity campaign toward the public and the hospitals so that the hospitals support the program and patients take advantage of them. 6. Systematic and effective publicity and educational programs for home heath care must be developed and exercises for the people of medical professions in hospitals as well as patients and their families. 7. Establish and operate pilot projects for home health care, to evaluate and refine their programs.

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