• 제목/요약/키워드: knowing

검색결과 880건 처리시간 0.031초

CPC와 ZWSC를 이용한 무선 망에서의 TCP 성능 향상 방안 (TCP Performance Enhancement over the Wireless Networks by Using CPC and ZWSC)

  • 이명섭;박영민;장주석;박창현
    • 대한임베디드공학회논문지
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    • 제1권1호
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    • pp.24-30
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    • 2006
  • With the original Transmission Control Protocol(TCP) design, which is particularly targeted at the wired networks, a packet loss is assumed to be caused by the network congestion. In the wireless environment where the chances to lose packets due to transmission bit errors are not negligible, though, this assumption may result in unnecessary TCP performance degradation. In these days, many papers describe about wireless-TCP which has suggested how to avoid congestion control when packet loss over the wireless network. In this paper, an enhancement scheme is proposed by modifying SNOOP scheme. To enhance the original SNOOP scheme, CPC(Consecutive Packet Control) and ZWSC(Zero Window Size Control) are added. The invocation of congestion control mechanism is now minimized by knowing the cause of packet loss. We use simulation to compare the overhead and the performance of the proposed schemes, and to show that the proposed schemes improve the TCP performance compares to SNOOP by knowing the cause of packet loss at the base station.

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Intraoperative Neurophysiological Monitoring in Cerebello Pontine Angle Tumor

  • Park, Sang-Ku
    • 대한임상검사과학회지
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    • 제46권1호
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    • pp.38-45
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    • 2014
  • Intraoperative Neurophysiological Monitoring (INM) inspection has a very important role. While preserving the patient's neurological function be sure to safe surgery, neurological examination should thank. Cerebello pontine angle tumor surgery, especially in the nervous system is more important to the meaning of INM. In cochlear nerve, facial nerve, trigeminal nerve, which are intricate brain surgery, doctors are only human eye and brain to the brain that it is virtually impossible to distinguish the nervous system. They receives a lot of help from INM. In this paper, we examined six kinds broadly. First, the methods of spontaneous EMG and Free-running EMG, which can instantly detect a damage inflicted on a nerve during surgery. Second, methods of triggered EMG and direct nerve electrical stimulation, which directly stimulate a nerve using electricity to distinguish between nerves and brain tumors. Third, the method of knowing a more accurate neurologic status by informing neurological surgeons about Free-running EMG wave forms that are segmetalized into four. Fourth, three ways of knowing when a patient will be awaken from intraoperative anesthesia, which happens due to a weak anesthetic. Fifth, a method of understanding the structures of a brain tumor and a facial nerve as five dividend segments. Sixth, comparisons between cases normal facial nerve recovery and occurrence of a facial nerve paralysis during the postoperative course.

국내외 고속철도차량 소음기준 분석 (Analysis on the noise standards of high-speed trains)

  • 이찬우;김재철;최성훈
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2004년도 추계학술대회 논문집
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    • pp.393-398
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    • 2004
  • From the research which it sees the noise of the high-speed railroad use nation it gave and the vehicle sound arresting tile masturbation which is a sound arresting unit standard it slept and in an environment noise standard side from it classified. The case foreign nation vehicle of the KTX vehicle where vehicle sound arresting from the side the high speed railroad use nations from the open ground with 64-68 dBA are used first of all from domestic and it compares and the efficiency almost is a possibility of knowing the beginning of history box from the interior sound arresting side. Also it will be developed from domestic and to case of the position KHST vehicle the speed 50 km/h is more speed up the KTX vehicle than in spite of the standard which is equal will pay with 350 km/h and it will be having and the possibility the strong point is knowing very from the interior sound arresting side it was. For railroad area along resident at the comfort improvement of the second the environment noise standard which it presents from the nation of most the patronage standard inland conforms in the law standard and the case high speed railroad of the place comparing domestic which is presented is not in spite of still prepared 2004 April commerce is operated standard easily not to be, it appeared with the fact that the speed governing one standard establishment by law is necessary.

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Enhancing the Awareness of Decentralized Cooperative Mobile Robots through Active Perceptual Anchoring

  • Guirnaldo, Sherwin A.;Watanabe, Keigo;Izumi, Kiyotaka
    • International Journal of Control, Automation, and Systems
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    • 제2권4호
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    • pp.450-462
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    • 2004
  • In this paper, we describe a system for controlling the perceptual processes of two cooperative mobile robots that addresses the issue of enhancing perceptual awareness. We define awareness here as knowing the location of other robots in the environment. The proposed system benefits from a formalism called perceptual anchoring. Here, perceptual anchoring enhances the awareness of the system by employing an anchor-based active gaze control strategy or active perceptual anchoring to control the perceptual effort according to what is important at a given time. By anchoring we extend the notion of awareness as knowing what the symbols in the control module represent to by connecting them to the objects or features in the environment. We demonstrate the present system through a simulation of two nonholonomic mobile robots performing a cooperative transportation by carrying a cargo to a target location where there are two other robots moving about. The system is able to efficiently focus the perceptual effort and thus able to safely carry the cargo to the target position.

소도읍의 재래시장 활성화를 위한 환경개선에 대한 연구 -충북 옥천재래시장을 중심으로- (Environment Improvement for the Traditional Market Activation of the Small Capital - Focused on Okcheon Traditional Market-)

  • 한상호;최효승
    • 한국농촌건축학회논문집
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    • 제6권3호
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    • pp.1-14
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    • 2004
  • Around the rural village area the traditional markets which are center the small capital it was active at the strong-point and the possibility the fact that it is developed. With this the same small capital currently as the city and the area where the quality of the rural village coexists, has the regional quality which belongs in guard of the capital region or strong-point city. With relative estrangement from the support process against this result past falling behind farming village it does not illustrate the possibility of knowing the fact that the duplex point who is falling behind as guard territory of reverse appears. Selects the small capital of the each area from like this point of view and the possibility of knowing center role of traditional market the possibility which is various is the possibility of doing in the process which propels an activation. Currently it is planned from the multi local self-governing group and the result which investigates the traditional market activation contents which are in the process of propelling, it will be able to discover the multi branch problem points against a traditional market activation.

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Knowing the Level of Information Security Awareness in the Usage of Social Media Among Female Secondary School Students in Eastern Makkah Al-Mukarramah- Saudi Arabia

  • Gharieb, Magdah Ezat
    • International Journal of Computer Science & Network Security
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    • 제21권8호
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    • pp.360-368
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    • 2021
  • This study aims at knowing both the level of information security awareness in the use of social media among female secondary school students in Makkah Al-Mukarramah, and the procedures that students follow when exposed to hacking or other security problems. The study relied on the descriptive survey approach. The results showed a high percentage of social media use among the study sample, and the most used applications by the students are snapchat and Instagram applications successively. In fact, 48% of the study sample have awareness of information security, the majority of the students memorize the password in the devices, most of them do not change them, and they have knowledge of fake gates and social engineering. However, their knowledge of electronic hacking is weak, and students do not share passwords with anyone at a rate of 67%. At the same time, they do not update passwords. Moreover, most of the procedures followed by students when exposed to theft and hacking is to change the e-mail data and the password, and the results varied apart from that, which reflects the weak awareness of the students and the weakness of procedures related to information security. The study recommends the necessity to raise awareness and education of the importance of information security and safety, especially in light of what the world faces from data electronic attacks and hackings of electronic applications.

Normative Issues in Next Generation Sequencing Gene Testing

  • Na-Kyoung Kim
    • 한국발생생물학회지:발생과생식
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    • 제27권1호
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    • pp.47-56
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    • 2023
  • Despite the commercialization of Next generation sequencing (NGS) gene testing, only a few studies have addressed the various ethical and legal problems associated with NGS testing in Korea Here, we reviewed the normative issues that emerged at each stage of the wet analysis and bioinformatics analysis of NGS gene testing. In particular, it was in mind to apply various international guidelines and the principles of bioethics to actual clinical practice. Considering the characteristics of NGS testing, wet analysis of additional testing can be justified if presumptive consent is recognized. Furthermore, the medical relationship between diseases needs to be established and it should be clear that the patient would have given consent if the patient had been aware of the correlation between genes. At the stage of bioinformatics analysis, the question of unsolicited findings arises. In case of unsolicited and relevant findings, according to American College of Medical Genetics and Genomics (ACMG), a recognized relationship between genes and diseases needs to be established. In case of unsolicited and not-relevant findings, it is almost impossible to determine whether knowing or not knowing the findings is more beneficial to the patient. However, it seems to be certain that the psychological harm an individual may suffer from such information is likely to be greater if the disease is severe and if there is no cure. The list of genes for which the ACMG guidelines impose reporting obligations is a good reference for judgment.

칸트의 관점에서 본 왕양명과 불교의 인간관 (An Investigation on the human nature in philosophy of Wang Yang-Ming and Buddhism from a Kantian point of view)

  • 박종식
    • 철학연구
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    • 제131권
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    • pp.165-197
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    • 2014
  • 칸트, 왕양명, 불교의 핵심 취지는 모든 인간에게 내재한 가능성을 스스로 실천할 때 인간은 비로소 진정한 자유인이 될 수 있다는 것이다. 칸트, 왕양명과 불교는 자유를 통해서, 자신에 대한 반성과 관조를 통해서 자신의 존재의 본질을 올바로 인식할 때 자신을 넘어설 수 있는 능력이 있다고 주장한다. 이것이 바로 내재적 초월이다. 외면적 지식이나 차이, 이해관계, 집착을 버리고 내면으로 되돌아갈 때 진정한 자신의 모습을 볼 수 있는 것이다. 선천적으로 존재하는 이러한 내면적 본성을 되돌이키는 것, 내재적 도덕법칙을 존경하는 것이 자신을 스스로 넘어서는 것이며 그렇게 될 때 성인이 되고 부처가 되는 것이다. 이러한 방법 이외에 따로 성인이나 부처가 있는 것이 아니다. 그럼에도 자신에게 불성, 양지, 도덕심이 있음을 알지 못하는 것은 집착에, 인욕에, 경향성에 가려져 있기 때문이다. 자신에게 불성이 있음을 아는 순간 범부는 부처가 되는 것이다. 허망하게 집착하고 있는 경험적 자아의 분별의식을 제거하게 되면 심층의 마음이 저절로 드러나게 된다. 따라서 자신을 보고 있는 자신을 되돌이키는 것, 자신 속에 있는 자신을 반성하는 것이 바로 불성이며, 양지이며, 도덕심인 것이다. 부처가 되고 성인이 되고 도덕군자가 된다는 것은 자신의 모습을 올바로 보는 것이다. 이처럼 심층에 갖추어져 있는 도덕법칙, 양지, 불성을 오롯이 파악하는 순간 우리는 깨달음에 이르게 된다. 따로 부처가 있는 것이 아니라, 자신의 본 마음을 자각하는 것이 부처라는 것을 알게 된다. 이것이 바로 즉견여래(卽見如來)이다. 여래란 따로 있는 것이 아니라 자신의 본모습을 보는 것이 바로 여래인 것이다. 이처럼 외부적인 것에 집착하거나 현혹되지 말고 자신의 근원적 본성을 아는 것이 바로 깨달음의 길이다. 이런 측면에서 칸트, 왕양명, 불교는 스스로 자신의 한계를 극복하고 자유를 획득할 수 있으며, 이것이 바로 내재적 초월인 것이다.

대학생의 활동중심 진로교육을 위한 웹기반 인터페이스 설계 (The Web-Based Interface Design for University Students' Activity-Oriented Career Education)

  • 이용희;오동주;박수홍
    • 정보교육학회논문지
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    • 제19권3호
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    • pp.345-360
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    • 2015
  • 본 연구는 대학생의 진로교육을 활동중심으로 구현할 수 있는 웹기반 인터페이스를 설계하는 것을 목적으로 하고 있다. 연구목적의 실현을 위하여 래피드프로토타이핑에 의하여 웹 인터페이스 초안을 설계하고 이를 전문가에게 검토 받아 설계안을 확정하도록 하였다. 전체적인 설계방향은 첫째, 진로교육의 활동 순서는 체계적 액션러닝의 순서에 준하여 실행한다. 둘째, 학습의 순환이 발생할 수 있도록 선순환 구조로 설계한다. 두 가지 큰 설계 방향에 따라 구안된 인터페이스는 학습환경 플랫폼 위에 자기이해, 타인이 보는 나 찾기, 직업세계 알기, 진로결정하기, 진로실행 계획하기, 활동설계하기, 개인, 공동 평가 및 성찰하기 등의 단계가 상호작용성이 강한 위키 및 웹 2.0의 설계 방식에 따라 구현될 수 있도록 설계하였다. 이와 같은 연구결과를 통하여 대학 현장에서 학습자들의 활동을 중심으로 한 경험 중심의 진로교육을 구현할 수 있을 뿐만 아니라 웹을 기반으로 하여 진로교육에의 접근성을 높일 수 있을 것으로 기대한다.

글로벌 리더십 역량 모형의 재구성 (Reframing The Global Leadership Competencies Models)

  • 김범성
    • 디지털융복합연구
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    • 제10권1호
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    • pp.215-228
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    • 2012
  • 본 연구의 질문은 다음과 같다. 글로벌 리더십 역량들은 무엇인가? 그리고 글로벌 리더십 역량들의 통합적 프레임은 무엇인가? 이 연구질문에 답하기 위하여 다음과 같은 구체적인 연구목표를 설정하였다. 첫째, 글로벌 리더십 역량(GLC)의 범위를 확인한다. 둘째, 연구자들의 동의를 얻을 수 있는 차원들을 추출한다. 셋째, 재구성된 글로벌 리더십 역량 모형을 제시한다. 글로벌 리더십 역량 및 글로벌 마인드에 관한 문헌연구와 내용분석을 통하여, 기존의 GLC들을 분류하기 위한 두가지 차원 -주체와 객체- 이 드러났다. 도출된 객체는 자신, 타인, 문화, 사업, 글로벌 세계이며, 글로벌 리더인 주체의 차원은 보다 구체적으로 인간활동의 앎/실행 과정과 인지적, 정서적, 행동적 측면으로 세분화되었다. 기존의 GLC는 두가치 차원에 따라 다시 틀지워지고 재정렬되었다. 그 결과, 11개의 무리로 분류된 새로운 GLC틀이 제시되었다. 앎에 관련된 GLC군으로서 개인적, 사회적, 문화적, 사업적 감각과 글로벌 마음가짐이 포함되었고, 실행에 관련된 GLC군으로서 개인적, 사회적, 문화적 사업적 탁월함과 글로벌 변화가 포함되었다. 그리고 개인의 특성은 앎과 실행 과정의 핵심에 위치하였다. 마지막으로, 본 연구의 의의와 시사점, 그리고 향후 연구에 관한 제언이 제시되었다.