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주기 및 비주기 태스크의 효율적인 관리를 위한 실시간 센서 노드 플랫폼의 설계
김병훈,정경훈,탁성우,Kim, Byoung-Hoon,Jung, Kyung-Hoon,Tak, Sung-Woo 한국정보처리학회 2007 정보처리학회논문지 C : 정보통신,정보보안 Vol.14 No.4
본 논문에서는 주기 및 비주기 태스크의 효율적인 관리를 제공하는 실시간 센서 노드 플랫폼을 설계하고 구현하였다. 기존 센서 노드의 소프트웨어 플랫폼은 제한된 센서 노드의 자원을 효율적으로 사용하기 위하여 메모리 및 전력 소비량의 최소화에만 초점을 두었기 때문에 태스크의 실시간성과 빠른 평균 응답시간을 보장하는 실시간 센서 노드의 소프트웨어 플랫폼에는 적합하지 않다. 이에 본 논문에서는 센서 노드의 소프트웨어 플랫폼으로 많이 사용되고 있는 TinyOS 기반에서 태스크의 실시간성과 빠른 평균 응답시간을 보장할 수 있는 기법과 한계를 분석하였으며, 모든 주기 태스크가 마감시한 내에 실행이 완료되는 것을 보장하고 비주기 태스크의 응답시간을 최소화하는 실시간 센서 노드 플랫폼을 제안하였다. 본 논문에서 제안한 플랫폼은 Atmel사의 초경량 8비트 마이크로프로세서인 Atmega128L이 탑재된 센서 보드에서 구현되었다. 구현된 실시간 센서 플랫폼의 성능을 분석한 결과, 모든 주기 태스크의 마감시한 보장을 제공함과 동시에 향상된 비주기 태스크의 평균 응답시간과 낮은 시스템의 평균 처리기 이용률을 확인할 수 있었다. In this paper, we propose a real-time sensor node platform that efficiently manages periodic and aperiodic tasks. Since existing sensor node platforms available in literature focus on minimizing the usage of memory and power consumptions, they are not capable of supporting the management of tasks that need their real-time execution and fast average response time. We first analyze how to structure periodic or aperiodic task decomposition in the TinyOS-based sensor node platform as regard to guaranteeing the deadlines of ail the periodic tasks and aiming to providing aperiodic tasks with average good response time. Then we present the application and efficiency of the proposed real-time sensor node platform in the sensor node equipped with a low-power 8-bit microcontroller, an IEEE802.15.4 compliant 2.4GHz RF transceiver, and several sensors. Extensive experiments show that our sensor node platform yields efficient performance in terms of three significant, objective goals: deadline miss ratio of periodic tasks, average response time of aperiodic tasks, and processor utilization of periodic and aperiodic tasks.
PHEV용 통합 충전 시스템의 운용 알고리즘에 관한 연구
김병훈(Byoung-Hoon Kim),이백행(Back-Haeng Lee),신동현(Dong-Hyun Shin),정진범(Jin-Beom Jeong),송현식(Hyun-Sik Song),김태훈(Tae-Hoon Kim),김상대(Sang-Dae Kim),허훈(Hoon-Heo),유지윤(Ji-Yoon Yoo) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Recently, there is developing the charging management system for supplying a power to a battery of PHEVs. But, it is inefficient and expensive to install for charging several vehicles because it could utilize one to a vehicle. Then, this paper suggests the operating algorithm of the integration charging management system with a main and many posts and explains the process to charge with vehicles at the same time. Therefore, the main system should have central control(or monitoring) functions with the GUI. And a post only have to connect a vehicle.
김병훈(Byoung-Hoon Kim) 연세대학교 신과대학(연합신학대학원) 2015 신학논단 Vol.81 No.-
Complex is a problem for everyone. From the perspective of psychoanlaysis, it has to do with issues like shame and guilt. And they are the ones for producing diseases and accidents for people. How can we deal with them? Christians believe that faith can help a person to transform the complex into the energy of success and creation. Psychoanalysts argue the same thing. According to them, complex can be transformed into the source of energy. In general, complex brings about the tensions, which result in all the problems physical and social. However, once a person work out the shame and guilt issues, the use of complex energy can be changed from malfunctioning to good-functioning. How to do that? This work is an attempt to find out the ways of making such transformation possible. By reviewing the works of psychoanalysts and philosophers, this paper lists all the ‘know-hows’. First, analysts like Freud, Klein, Bion and others uses the technique of “making the unconscious conscious with free association,” “the working through of mourning about one’s losses,” and “Alpha function.” Especially, Bionists like Grostzein put an emphasis on the work of discovering “symbols, concepts and truths” about one’s complex- related incidents, which would help the person to establish a sense of order and peace in the midst of confusion and entropy originated by one’s complex. Arnold Mindell wellknown for his work of integration between quantum physics and analytical psychology explains the transformation of complex through the metaphor of “Black hole” and “Conjugational work.” Philosophers like Lacan, Christeva, and Zizek regards as imprtant the concepts like “identification with symptoms,” “a sublime object of ideology,” “catharsis of tragedy,” and “understading of perplexed codes.” Deleuz and Guattari introduce the concepts like “rizzome,” ‘deterrritorialization,“ and ”schizoanalysis“ for explaining the transcendental change of complex energy tension. And Kohut explains the power of ”bipolar self“ and ”tension-arc“ which create on-going spiritual energy. Finally, I propose a concept of ”the marriage between signifiers and affects“ for increasing the spirit. The pathological tension energy originated from shame and guilt turns out to be the productive energy like gratitude and ideals if one go through these inner psychological working-outs. Complex is a problem for everyone. From the perspective of psychoanlaysis, it has to do with issues like shame and guilt. And they are the ones for producing diseases and accidents for people. How can we deal with them? Christians believe that faith can help a person to transform the complex into the energy of success and creation. Psychoanalysts argue the same thing. According to them, complex can be transformed into the source of energy. In general, complex brings about the tensions, which result in all the problems physical and social. However, once a person work out the shame and guilt issues, the use of complex energy can be changed from malfunctioning to good-functioning. How to do that? This work is an attempt to find out the ways of making such transformation possible. By reviewing the works of psychoanalysts and philosophers, this paper lists all the ‘know-hows’. First, analysts like Freud, Klein, Bion and others uses the technique of “making the unconscious conscious with free association,” “the working through of mourning about one’s losses,” and “Alpha function.” Especially, Bionists like Grostzein put an emphasis on the work of discovering “symbols, concepts and truths” about one’s complex- related incidents, which would help the person to establish a sense of order and peace in the midst of confusion and entropy originated by one’s complex. Arnold Mindell wellknown for his work of integration between quantum physics and analytical psychology explains the transformation of complex through the metaphor of “Black hole” and “Conjugational work.” Philosophers like Lacan, Christeva, and Zizek regards as imprtant the concepts like “identification with symptoms,” “a sublime object of ideology,” “catharsis of tragedy,” and “understading of perplexed codes.” Deleuz and Guattari introduce the concepts like “rizzome,” ‘deterrritorialization,“ and ”schizoanalysis“ for explaining the transcendental change of complex energy tension. And Kohut explains the power of ”bipolar self“ and ”tension-arc“ which create on-going spiritual energy. Finally, I propose a concept of ”the marriage between signifiers and affects“ for increasing the spirit. The pathological tension energy originated from shame and guilt turns out to be the productive energy like gratitude and ideals if one go through these inner psychological working-outs.