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노희태,이장원 한국통신학회 2016 Journal of communications and networks Vol.18 No.6
The wireless mesh network (WMN) has attracted significantinterests as a broadband wireless network to provide ubiquitouswireless access for broadband services. Especially with incorporatingmultiple orthogonal channels and multiple directionalantennas into the WMN, each node can communicate with itsneighbor nodes simultaneously without interference between them. However, as we allow more freedom, we need a more sophisticatedalgorithm to fully utilize it and developing such an algorithm isnot easy in general. In this paper, we study a joint channel assignment,link scheduling, routing, and rate control problem for theWMN with multiple orthogonal channels and multiple directionalantennas. This problem is inherently hard to solve, since the problemis formulated as a mixed integer nonlinear problem (MINLP). However, despite of its inherent difficulty, we develop an algorithmto solve the problem by using the generalized Benders decompositionapproach [2]. The simulation results show the proposed algorithmprovides the optimal solution to maximize the network utility,which is defined as the sum of utilities of all sessions.
인성관련 동화책을 이용한 이야기나누기-협동적그룹게임 연결프로그램이 유아인성과 자기조절력에 미치는 영향
노희태,김미애 한국교원대학교 유아교육연구소 2018 한국유아교육연구 Vol.20 No.3
본 연구는 만5세 유아를 대상으로 인성관련 동화책을 이용한 이야기 나누기-협동적 그룹게임 연결프로그램이 유아인성과 자기조절력에 미치는 효과를 탐색하였다. 이를 위해 유아인성과 자기조절력에 대한 선행연구를 토대로 인성관련 동화책을 이용한 이야기나누기-협동적 그룹게임 연결프로그램을 개발하였다. 프로그램의 효과를 검증하기 위해 연구대상은 경상북도 K시에 위치한 M어린이집 만5세반 14명(실험집단)과 M어린이집 만5세반 14명(비교집단) 총28명이다. 유아인성을 측정하기 위해 나은숙과 김경희(2014)가 개발한 ⌜3~5세 유아용인성척도⌟검사 도구를 사용했으며, 자기조절력 측정을 위해 Kendall과 Wilcox(1979)가 개발한 측정도구를 유혜정(1998)이 번안하고 이지현(2001)이 수정·보완한 척도를 사용하였다. 본 프로그램은 주2회 총 18회의 실험 처치를 실시하였으며, 유아인성과 자기조절력의 효과 검증을 위해 사전·사후 검사를 실시하였다. 결과의 자료 분석은 SPSS 12 프로그램을 이용하여 공변량(ANCOVA)분석을 실시하였다. 연구결과 인성관련 동화책에 관한 이야기나누기-협동적 그룹게임 연결프로그램이 유아인성과 자기조절력 향상에 긍정적인 효과가 나타났으며, 유아인성과 자기조절력에 영향을 미치는 프로그램의 요인들을 중심으로 연구결과가 논의되었다. This study investigated effects of a coupled program of discussion on personality related storybooks with cooperative group games on young children’s personality and self-regulation. The program was designed based on literature and experimental studies on young children’s personality development and self-regulation. In order to verify its effects, the program was applied to twenty eight 5 year old children, fourteen for an experimental group and another fourteen for an comparative group. They participated in eighteen session activities for three months. After the eighteen session program was completed the pre-and post tests were conducted and the results were analyzed. For testing young children’s personality, a personality measurement for young children developed by Na and Kim(2014) was used. For testing young children’s self-regulation, self-regulation measurement was used which was invented by Kendall & Wilcox(1979), translated by Yoo(1998), and applied by Lee(2001) for her study. This study proved that the coupled program of discussions on personality related picture books with cooperative group games had a good effect on young children’s personality development and their self-regulation. Factors and detailed elements of the designed program that influenced young children’s personality and their self-regulation were discussed.
차세대 네트워크를 위한 네트워크 부호화 기반의 계층별 프로토콜 분석
노희태,김병국,변일무,전기준,김광순,이장원 에스케이텔레콤 (주) 2011 Telecommunications Review Vol.21 No.5
네트워크 부호화 기술은 통신 노드들이 전달해야할 다수의 데이터를 하나의 데이터로 부호화하여 전송하는 기술을일컫는다. 이러한 네트워크 부호화 기술을 활용하면 네트워크상에서의 데이터 전송 효율을 향상시킬 수 있다. 따라서WiMAX와 LTE-Advanced와 같이 사용자에게 대용량의 무선 멀티미디어 서비스를 제공하기 위한 차세대 네트워크의성능을 보다 향상시키기 위하여 네트워크 부호화 기술이 주요 후보 기술로 여겨지고 있다. 본 논문에서는 앞으로 출현할 4G 통신망에서 네트워크 부호화의 활용방안을 알아보고자 무선 네트워크에서 네트워크 부호화를 고려한 기존 연구들을 네트워크 프로토콜의 각 계층별로 정리하여 소개한다.
노희태,조수연,이형일 상명대학교 글로벌문화예술교육연구소 2023 Research in Dance and Physical Education Vol.7 No.2
This study aimed to investigate the fluid replacement effects of water or sports beverages on the peripheral markers of blood-brain barrier (BBB) integrity during endurance exercises at high ambient temperatures. Six healthy males were recruited and completed running trials in the following four conditions: 1) thermoneutral temperature at 18℃ (trial 18), 2) high ambient temperature at 32℃ without fluid replacement (trial 32), 3) high ambient temperature at 32℃ with water replacement (trial 32+W), and 4) high ambient temperature at 32℃ with sports beverage replacement (trial 32+S). Blood samples were collected pre-exercise, post-exercise, and 1-h post-exercise for each condition. In trial 32, hematocrit levels were significantly increased post-exercise than pre-exercise (p < 0.05). In all trials, the S100β levels were significantly increased post-exercise compared to pre-exercise (p < 0.05). Furthermore, the S100β levels were significantly decreased in all trials 1-h post-exercise than post-exercise (p < 0.05), and these levels were significantly higher 1-h post-exercise in trial 32 than in other trials (p < 0.05). In all trials, ammonia levels were significantly higher post-exercise than pre-exercise (p < 0.05). These results suggested that exercises at high ambient temperatures could damage the BBB more than exercises at thermoneutral temperatures. Additionally, water or sports beverage hydration during acute exercises at high ambient temperatures can effectively reduce BBB damage caused by exercise and thermal stress.