다중 송수신 안테나 시스템 기반에서 오차 전달을 고려한 효율적인 K-BEST 복호화 알고리듬

이성호,신명철,서정태,이충용,Lee Sungho,Shin Myeongcheol,Seo Jeongtae,Lee Chungyong 대한전자공학회 2005 電子工學會論文誌-TC (Telecommunications) Vol.42 No.7

K-Best 알고리듬은 일정한 최대 복잡도를 가지기 때문에 ML (Maximum Likelihood) 수신기나 sphere decoding 수신기에 비해 실시간 구현에 적합한 알고리듬으로 알려져 있다. 그러나 ML 수신기에 가까운 성능을 내기 위해 충분히 큰 K값을 적용할 경우 여전히 높은 복잡도를 가지게 되며, 구현에 좀 더 적합하도록 작은 K값을 적용할 경우, 최대 복잡도는 낮아지는 반면오차 전달(error propagation)에 의해 높은 SNR 영역에서 에러 플로링(error flooring)이 발생하는 문제점이 있다. 본 논문에서는 이러한 오차 전달 문제를 해결하기 위해 각 레벨 별로 K값을 감소시키는 K-reduction 기법을 제안하였으며, 모의 실험을 통해 연산량 및 비트 오차 확률 측면에서 이득이 있음을 확인하였다. A K-Best algerian is known as optimal for implementing the maximum-likelihood detector (MLD), since it has a fixed maximum complexity compared with the sphere decoding or the maximum-likelihood decoding algorithm. However the computational complexity of the K-Best algrithm is still prohibitively high for practical applications when K is large enough. If small value of K is used, the maximum complexity decreases but error flooring at high SNR is caused by error propagation. In this paper, a K-reduction scheme, which reduces K according to each search level, is proposed to solve error propagation problems. Simulations showed that the proposed scheme provides the improved performance in the bit error rate and also reduces the average complexity compared with the conventional scheme.

제품디자인에서 미적 표현형식으로서 움직임의 사례 -모리스 메를로 풍티의 지각에 근거하여-

이성호,Lee, Sungho 한국스마트미디어학회 2014 스마트미디어저널 Vol.3 No.3

메를로 퐁티의 지각에 근거하여 본 연구자는 움직임을 제품에 구조화된 고유한 미적 성질과 표현 그리고 가치가 통합되어 의미, 즐거움을 체험하는 형식으로 규정했다. 본 연구의 목적은 웨어러블, 유비쿼터스, 인터랙션, 놀이, D.I.Y, 유니버셜, 에콜로지는 이 움직임이 다양하게 제품디자인에 주제화된 형식, 양상임을 주장하는 것이다. 이는 움직임과 모든 디자인형식들 사이의 다음과 같은 유비추론의 방법과 형식에 따라 판단된 결과이다. 첫 번째, 움직임은 미적 표현과 가치의 통합으로써 미적 판단의 근본적, 보편적 명제, 공리다. 두 번째, 모든 디자인형식들은 미적 표현체계에 근거한 가치가 주제화된 사례다. 세 번째, 따라서 모든 디자인형식들은 미적 가치에 의거한 표현의 양상이다. 이상과 같은 판단, 추론의 확실성은 미적 표현으로서 움직임과 디자인형식 사이의 일치가 사실이라는 증명이다. 즉, 미적 가치가 연구된 모든 디자인형식들에서 주제로 성립하여 사용자가 실제로 미적 의미, 즐거움을 체험하였음에 대한 증명이다. 이에 대한 보증은 사용자의 생활 속에서 개개인의 체험이 유일하다. 움직임은 제품의 존재, 사용자의 당위를 미적(실천적) 차원에서 통합함과 동시에 이에 근거해 성립한다. 본 연구의 모든 연구사례에서 강조되는 것은 제품이 아니라 움직임이다. 따라서 제품디자인은 이러한 움직임을 제품에 구조화하는 활동으로 전환된다. Based on the perception of Maurice Merleau Ponty, This study defines that Moving is a form lively to experience meaning, pleasure as the aesthetic attribute structured to a product, expression and value are synthesized into. The purpose of study is to argue that Wearable, Ubiquitous, Interaction, Play, D, I, Y, Universal, Ecology are the forms, modalities that the moving is variously subjected to the product design. Above This is the result reasoned according to analogical form as below between the moving and all design forms. First, The moving as the aesthetic expression and value are synthesized into is the intrinsic, general proposition, maxim for the value judgement. Second, All design forms are the cases which the values based on the aesthetic expression system are subjected to Third, Thus All design forms are the modalities of the aesthetic expression based on the values. The certainty of this judgement, reasoning is the proof that the correspondence between the moving as the aesthetic expression and design form is the fact. That is to say, It is the proof that Users lively experience the aesthetic meaning, pleasure in fact as the aesthetic values are subjected to all design forms. The lived experience of each user in their daily life itself is the only method or assurance for this. The moving integrates the existence of a product and what should be of users into the aesthetic dimension and at the same time, is realized based on this. The emphasized theme in all cases of this study is not the product but the moving. So, The product design is changed into the action which structures the moving like above to a product.

OSC기반 PC구조 공동주택의 보급 및 활성화 방안과 핵심 성과 지표 개발 - 주체별 설문조사 분석결과를 중심으로 -

이성호,차희성,Lee, Sungho,Cha, Heesung 한국건설관리학회 2021 한국건설관리학회 논문집 Vol.22 No.1

최근 국내 건설 산업에는 많은 변화들이 있다. OSC는 이러한 문제점들을 해결해 줄 것이라는 기대를 받고 있으며, 국내 건설생산시스템의 혁신을 불러일으킬 방안으로 대두되고 있다. 과거의 연구가 실패로 돌아간 뒤, 최근에서야 다시금 주목을 받고 있는 OSC는 해외에 비해 인식 조사와 맞춤형 성과 측정에 대한 연구는 부족하다. 본 연구는 설문조사를 통해 건설 산업 종사자들의 OSC에 대한 인식을 파악하고, 주체별 인식 차이, 성과 지표의 상대적 중요도에 대한 인식을 분석하였다. 대체적으로 OSC의 도입 필요성과 발전의 필요성은 인지하고 있었으며, 장려하는 이유와 활성화를 위해 극복해야 할 장애요인을 분석하였다. 성과 지표의 상대적 중요도와 주체별 인식차이를 확인하였으며, 이를 통해 OSC PC 공동주택의 보급 및 활성화 방안과 핵심 성과 지표를 제시한다. Recently, there have been many changes in the domestic construction industry. OSC (Off-Site Construction) is expected to solve these problems, and it is emerging as a way to inspire innovation in the domestic construction production system. OSC, which has only recently attracted attention again after previous studies have failed, is lacking in research on preception surveys and customized performance measurements compared to overseas. This study investigated the perceptions of construction industry workers on OSC through a survey, and examined differences in perceptions of each subject and the relative importance of performance indicators. In general, the need for introduction and development of OSC was recognized. Also, drivers and obstacles inhibiting more use of OSC were analyzed. The relative importance for performance indicators and differences in perceptions of each subject were identified. Then, this study suggests plans for diffusion and revitalization of OSC, and key performance indicator for OSC based PC structure apartment housing.

토머스 모어의 『유토피아』: 해독하기 어려운 인문주의 텍스트

이성호 ( Lee Sungho ) 영미문학연구회 2016 안과 밖 Vol.0 No.41

This article reviews criticism on Thomas More`s Utopia, focusing on critics who read the work as a Renaissance humanist text. Fredric Jameson sheds new light on the text by defining it as a working prototype of literary utopianism in general. According to Jameson, Utopia`s “narrative praxis” unconsciously figures the social and ideological contradictions of the era, contradictions it intensively desires to resolve. To Jameson, social restructuring reformulates such contradictions instead of expunging them; Utopia`s utopian “figuration” reflects “a desperate final attempt” to envision a society without social contradictions. One can understand the value of such “extreme gesture” by considering how it enables the human mind to encounter the limitations imposed by the dominant ideology and look to new horizons of thinking. On the other hand, literary scholars invested in identifying More`s work as humanist highlight formal and semantic ambiguities within the text― especially those stemming from the tension between rivaling approaches of Morus and Hythloday―as its distinguishing characteristics. Reading Utopia as embodying Christian humanism, for instance, requires one to sympathize with More who is struggling to balance the Christian notion of man`s original sin and natural depravity with the emergent belief in human potential for progress and enlightenment. Likewise, understanding how More appropriates classical rhetoric leads one to appreciate Utopia as upholding humanist desires for unbiased and non-partisan thinking. As Stephen Greenblatt suggests, it is necessary to discern the parallel between competing value systems that splits Utopia and its author`s internal conflicts rooted in his ambivalence towards the real-world politics of the court and the church.

이중 성형 강판 합성보 접합부에 대한 주기하중 실험

이성호(Lee, Sungho),박형철(Park, Hyungchoel) 대한건축학회 2019 대한건축학회 학술발표대회 논문집 Vol.39 No.2

소형 쓰레기 소각시설의 문제점과 개선방안

이성호(Sungho Lee) 계명대학교 낙동강환경원 2001 環境科學論集 Vol.6 No.1

Interrogating the Color Line: A Critique of Two-Race Culture and the Possibility of an Inclusive Blackness in “The Wife of His Youth”

이성호(Sungho Lee) 한국비평이론학회 2023 비평과이론 Vol.28 No.3

비평가들은 찰스 체스넛의 작품이 남북전쟁 이후 미국사회에 만연한 이분법적 인종구분개념을 거부하고 문화적·인종적 혼종성의 문제에 천착한다는 점에 주목해 왔다. 체스넛은 흑인 문제를 다루면서 문화적·인종적 혼종화의 과정에서 발생하는 내적 모순과 생산적 상호교류의 가능성을 보여준다. 그는 인종 개념이 문화적 산물에 불과하다는 비판적 관점을 견지하면서, 이분법적 인종 구분, 백인 주류 사회로의 동화, 소수민족 문화 구축과 같은 개념을 넘어서는 인종적 세계관 제시한다. 이 논문은 체스넛의 「젊은 시절의 아내」의 주인공인 라이더가 중산층 지식인이자 혼혈인으로서 미국 북부와 남부, 검은 피부 흑인과 흑백 혼혈인들 간에 존재하는 분열양상을 인식하고 이를 극복해 나가는 과정을 분석한다. 라이더는 신분 상승을 위해 흑인을 주변화시키는 백인사회의 규범을 내면화하면서 정체성 혼란에 빠지게 된다. 이러한 라이더의 문화적 동화주의에 대한 체스넛의 비판적 입장은 그가 흑인 멸종 이론과 짐크로우 법을 맹렬하게 비판하면서 본질주의적 인종 개념을 해체하는 데에서 드러난다. 작품의 결말에 이르러 라이더는 남부에서 자신을 찾아온 아내를 받아들임으로써 흑인 사회 내부에 존재하는 차이와 간극을 해소할 수 있는 포용적 미래를 탐색한다. 이를 통해 체스넛은 라이더의 정체성 안에 존재했던 내적분열의 양상—북부와 남부, 부르주아지와 하층민에 대한 소속감, 사회적 성공에 대한 열망과 아픈 개인사 사이의 긴장—이 포용적이고 통합적인 흑인공동체 형성을 통해 극복되고 화해될 수 있음을 전망하면서도, 동시에 이러한 미래의 성취가 녹록지 않은 과정임을 암시하고 있다. Charles Chesnutt’s works have been extensively studied for their exploration of cultural and racial hybridity, as they demonstrate a radical impulse to reject the postbellum American notion of a Manichaean racial divide. Chesnutt’s discussion of the black question revolves around cross-fertilization and inner conflicts that stem from cultural, racial amalgamation. In challenging the notion of race as a cultural construct, Chesnutt opposes two-race politics, envisioning a racial landscape that goes beyond both cultural assimilation and ethnic enclave-building. This paper explores Chesnutt’s “The Wife of His Youth”, analyzing how the protagonist, Mr. Ryder, a literate upper-middle-class mulatto, navigates cultural divides between the North and the South, and between dark-skinned blacks and mulattoes. He undergoes an identity crisis, having implicitly internalized white codes for social ascension that stigmatize blackness, and Chesnutt’s critique of such an assimilationist drive is made evident when he fiercely repudiates the black extinction theory and Jim Crow legislation with his non-essentialist concept of race. Ultimately, Mr. Ryder turns to bridging the intra-racial gaps by acknowledging his wife from a slave marriage, heralding a new direction for cultural convergence. Through such a move—his sense of belonging to both the North and the South, his affiliation with both the bourgeoisie and the lower class, and the tensions between his future aspirations and personal history—Chesnutt suggests, all might advance toward the possibility of reconciliation through inclusive black community building, though not without struggles.

고정자 코어의 조립용 홀이 유도전동기 성능에 미치는 영향 분석

이성호(Sungho Lee),윤장호(Jangho Yun) 대한전기학회 2018 대한전기학회 학술대회 논문집 Vol.2018 No.-

중학생들의 건강증진행위, 삶의 질에 대한 구조모형

이성호 ( Lee Sungho ) 대한통합의학회 2020 대한통합의학회지 Vol.8 No.4

Purpose : Middle school students in the early stages of adolescents need balanced growth and development, and they are in the process of forming healthy lifestyles and are in an important period when they need to lay the foundation for a healthy life through active health management and guidance. Through systematic health-related policies and education, I intend to lay the groundwork for them to form healthy lifestyles in their high schools and adulthood. Methods : For this study, a survey was conducted from September 1 to October 30, 2019, and 300 middle school students based in Busan Metropolitan City were surveyed. Based on the analysis and results of preceding studies, a research model was set up to find out the effect of family support, health control activities and self-efficacy on health promoting behaviors and how health promoting behaviors affect the quality of life. Results : First, if family support is high, health promotion behavior and quality of life are analyzed to be high, so family support is affecting health promotion behavior and quality of life. Second, health control behavior had a significant effect on health promotion behavior, but did not affect the quality of life. Third, self-efficacy was having a significant effect on health promotion behavior and quality of life. Fourth, health promotion behavior was affecting the quality of life. Conclusion : In order to improve the quality of life, middle school students should first increase their health promotion behavior, and it is important to be supported by their family members and strengthen their self-efficacy as variables that increase their health promotion behavior. First of all, they should be given the infinite trust of the family and the strong belief that the family always supports them, and based on this, the student himself will be able to strengthen his or her self-efficacy. In addition, the process of physical and mental change of students comes to everyone, but during this process, members of society, such as families and schools, should send them support and trust so that they can grow up to be the decent members of society.

무선통신 기술 활용 구조물 내구성 모니터링 기술 개발 현황 및 과제

이성호 ( Lee Sungho ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.2

With recent increasing interest from both safe society expectation and technological advancement in fields of sensors, microelectonics, and wireless communication, nondestructive monitoring technologies based on wireless solutions have been researched in many structures for construction performance evaluation and infrastructure durability inspection. To support robust wireless monitoring system, there are still technical barriers to overcome, such as low power consumption, battery-less operation, robust wiress communication and small system size. In this paper, recent research trends and challenges in infrastructure durability monitoring technology with wireless communication will be reviewed.