서포트벡터머신을 이용한 교육시설 초기 공사비 예측에 관한 연구

신재민,김광희,Shin, Jae-Min,Kim, Gwang-Hee 한국교육녹색환경연구원 2012 교육·녹색환경연구 Vol.11 No.3

The accuracy of cost estimation at an early stage in school building project is one of the critical factors for successful completion. So various of techniques are developed to predict the construction cost accurately and expeditely. Among the techniques, Support Vector Machine(SVM) has an excellent ability for generalization performance. Therefore, the purpose of this study is to construct the prediction model for construction cost of educational building project using support vector machine technique. And to verify the accuracy of prediction model for construction cost. The performance data used in this study are 217 school building project cost which have been completed from 2004 to 2007 in Gyeonggi-Do, Korea. The result shows that average error rate was 7.48% for SVM prediction model. So using SVM model on predicting construction cost of educational building project will be a considerably effective way at the early project stage.

한반도 지형에 적합한 SAR 위성의 운영모드 설계

신재민,임정흠,김응현,이상곤,이상률,Shin, Jae-Min,Im, Jeong-Heum,Kim, Eung-Hyun,Lee, Sang-Kon,Lee, Sang-Ryool 한국항공우주연구원 2004 항공우주기술 Vol.3 No.2

본 논문에서는 SAR 위성시스템 설계에서 위성의 임무를 적절히 수행할 수 있는 위성의 운영모드 설계를 수행하였다. strip mode, scan mode, fine mode 3가지 모드에 대한 기본적인 고찰이 이루어졌으며 위성의 Look angle 결정을 위해 Incidence angle을 고려한 한반도의 지형적인 고찰도 함께 이루어졌다. 결정된 운영 모드를 이용하기 위해서 위성의 임무 수행지역을 정의하였고 정의된 수행지역은 위성의 레이다 자료의 송수신을 고려하여 결정 되었다. 현재 구성된 사항들은 추후 더욱 상세한 요구사항들과 조건들을 고려하면서 연구될 것이다. In this paper, the SAR operational mode for achieving mission is designed. Each mode, which is the strip mode, scan mode, and fine mode, is basically considered. Based on the characteristics, which includes incidence angle, of the topography in Korean Peninsula, look angle for SAR satellite is determined. The limited region of operating the mission, which is considered to be able to receive and transmit the radar data, was defined to use determined operational mode. In the future, as considering full requirements and conditions for the SAR satellite, requirements and parameters will be discussed and studied.

노즐-플래퍼 서보밸브 이용 공압 제진대의 시스템 식별

신재민(Jae Min Shin),안형준(Hyeong-Joon Ahn) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.5

가장 푸른 눈(The Bluest Eye)의 주제 연구: 구술화법과 내면언어를 통한 정체성 추구

신재민(Shin, Jae-Min) 한국영어교육연구학회 2017 영어교육연구 Vol.- No.50

Toni Morrison has consistently dealt with searching for Afro-American self-identity in the face of slavery and constant racism from her first novel, The Bluest Eye(1970) to the latest work, Jazz(1992). Although the struggle for gaining selfhood for them (Afro-Americans) in the united States has been extremely difficult, Morrison discovers and celebrates the dynamic force and firm determination that have enabled generations of Afro-Americans to survive. In most of Morrison’s works, the problem of gaining self-identity is presented for characters to define themselves not by other people but by their views of life. Each of them comes to realize the power of his own voice in the process of narrating his life and defining himself as a subject. This thesis aims to explore how search for self-identity of each character in Morrison’s novel, The Bluest Eye is represented by way of narrative structures - Orality and Inner speech. Orality is a conceptual theory of language that scholars are using to describe, characterize and analyze the significance of orally based thought and expression. Orality which is represented as dialogue and blues in The Bluest Eye, makes Afro-Americans resist to the white-centered culture and preserve their cultural identities. Inner speech reflects the plurality of self, which represents the twoness of one self for Morrison. It also means heteroglossia, the dominant voice (authoritative discourse) and the muted voice (inner persuasive discourse) found in a society. Morrison’s novel deals with the relationship between these two discourses. Morrison points out that inner speech makes each character examine his life and develop his own view of life independent of the dominant ideology. The Bluest Eye deals with the success and failure of self-knowledge found in two African-American girls, Pecola and claudia. Pecola is victimized by internalizing the white-centered ideology about beauty, while Claudia’s resistance to assimilation is found in her involvement of orality and inner speech. Orality, which is represnted as dialogue and blues enables Claudia to gain psychological stability and to improve her own thought independent of people in general. Inner speech brings Claudia as well as Pauline into the recognition of their realities which are restricted by racism and other oppression. Especially Claudia shows the way one young girl is able to develop a positive sense of self-definition in the face of an oppressive and racist society.

Retrieving Semantic Information and Names of Proper and Common Nouns in People with and without Aphasia

신재민(Jae-Min Shin),하지완(Ji-Wan Ha),황유미(Yu Mi Hwang),편성범(Sung-Bom Pyun) 한국언어청각임상학회 2020 Communication Sciences and Disorders Vol.25 No.1

배경 및 목적: 본 연구에서는 좌반구 손상 실어증 환자와 정상 성인들을 대상으로 의미연결 과제와 이름대기 과제에서 고유명사와 보통명사에 따라 수행력에 차이가 있는지를 알아보았다. 방법: 좌반구 손상 실어증 환자와 정상 성인 각 20명을 대상으로, 고유명사 의미연결, 보통명사 의미연결, 고유명사 이름대기, 보통명사 이름대기 과제를 실시하여 정반응 점수를 비교하였고, 실어증 집단에서 각 과제의 수행력 간 상관관계가 어떠한지 분석하였다. 결과: 집단 간 차이 및 과제유형에 따른 차이는 통계적으로 유의하였으나, 명사종류에 따른 차이는 유의하지 않았다. 또한 명사종류와 집단 간 상호작용효과는 통계적으로 유의하지 않았으나, 과제유형과 집단 간, 명사종류와 과제유형 간, 그리고 명사종류, 과제유형과 집단 간 상호작용 효과가 모두 유의하였다. 실어증 집단에서 모든 과제 수행력 간 유의한 상관이 있었고, 그 중 고유명사 의미연결 과제와 보통명사 의미연결 과제의 상관계수가 매우 높은 것으로 나타났다. 논의 및 결론: 실어증 집단에서 의미연결 과제 수행 시 고유명사의 점수가 보통명사보다 유의하게 좋다는 것을 확인하였다. 본 연구는 고유명사의 경우 우반구의 기능, 즉 시각정보의 활성화가 의미처리에 관여할 가능성, 그로 인해 좌반구가 손상된 실어증 환자가 손상되지 않은 우반구를 활용하여 고유명사 의미처리에 도움을 받았을 가능성을 제시하고 있다. Objectives: The aim of this study was to determine whether performance differs between proper nouns and common nouns in semantic and naming tasks between patients with aphasia and normal adults. Methods: 20 patients with aphasia and 20 normal adults performed a proper noun semantic task, common noun semantic task, proper noun naming task, and common noun naming task. Following this, we compared the scores and analyzed the correlation among the four tasks. Results: The differences among the groups and the types of tasks were statistically significant, but not according to the noun types. Also, noun type and group interaction effect were not statistically significant; but task type and group, noun type and task type, and noun type, task type and group interaction effect were significant. In the aphasia group, there was a significant correlation between the performance of all tasks, and the correlation coefficient between the proper noun semantic task and the common noun semantic task was very high. Conclusion: In the aphasia group, we confirmed that the proper noun score was significantly better than the common noun when performing semantic tasks. This study suggests that in the case of proper nouns, the function of the right hemisphere; that is, the activation of visual information, may be involved in semantic processing. As a result, it suggests that aphasia patients with damaged left hemispheres were assisted in the process of proper noun semantics by using the uninjured right hemisphere.

공압 노즐-플래퍼 밸브 동특성에 대한 연구

신재민(Jae-Min Shin),안형준(Hyeong-Joon Ahn) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.11

SAR 위성 보정을 위한 지상장비 활용 개념

신재민(Jae-Min Shin),양도철(Do-Chul Yang),정호령(Ho-Ryung Jeong) 한국항공우주학회 2021 한국항공우주학회 학술발표회 논문집 Vol.2021 No.11

여성의 일-삶 균형과 주관적 경력성공 관계에서 자아탄력성의 매개효과

신재민(Shin Jae Min),이희수(Lee Hee Su) 학습자중심교과교육학회 2017 학습자중심교과교육연구 Vol.17 No.19

이 연구는 여성의 ‘일-삶 균형’인 일-가족 균형, 일-여가 균형, 일-성장 균형이 ‘주관적 경력성공’인 경력만족, 고용가능성에 미치는 영향을 살펴보고, 이 관계에서 ‘자아탄력성’인 낙관성, 스트레스 대처능력과의 매개효과를 검증하고자 한다. 연구 대상은 서울·경기지역의 공공기관, 병원, 기업 등에 일하는 여성 313명이며, 2012년 10월 15일부터 10월 30일까지 눈덩이표집방식으로 설문조사를 실시하였다. 수집한 자료는 구조방정식 모형을 설정해 모형의 적합도를 평가하고, 부트스트래핑을 실시해 매개 효과를 검증하였다. 연구결과, 여성의 일-가족 균형은 낙관성의 매개를 통해서만 경력만족과 고용가능성에 영향을 미치는 완전매개효과를 보였다. 여성의 일-성장 균형은 경력만족과 고용가능성에 직접적인 영향을, 낙관성의 매개를 통해서도 경력만족과 고용가능성에 영향을 미치는 부분매개효과를, 스트레스 대처능력의 매개를 통해 고용가능성에 영향을 미치는 부분매개효과를 보였다. 따라서 여성은 일-가정 균형뿐만 아니라 교육과 자기계발 등 평생학습으로 경력만족과 고용가능성을 높이고, 경력단절 예방차원에서 역경을 유연하게 대처하는 자아탄력성에 관심을 제고해야 한다. This study investigated the effects of ‘work-life balance,’ i.e.,work-family balance, work-leisure balance, and work-growth balance, on ‘subjective career success,’ i.e., career satisfaction and employability and attempted to verify the mediation effect of ‘ego-resiliency,’ i.e., optimism and stress coping on the relationship between the two. The subjects of this study were 313 women working at public institution, hospital, corporation, etc. in Seoul and Gyeonggi-do. From October 15 until October 30, 2012, a survey was conducted based on snowball sampling. The collected data were evaluated for their goodness of fit by using a structural equation model, and the mediation effect was verified by using bootstrapping. The result of this study showed that the work-family balance of women had effects on career satisfaction and employability only via mediation of optimism, implying complete mediation. The work-growth balance of women had direct effects on career satisfaction and employability and also had effects on career satisfaction and employability via mediation of optimism, implying partial mediation. It also had an effect on employability via mediation of stress coping, implying partial mediation. Therefore, women need to pay attention not only to work-family balance but to lifelong learning in order to improve their career satisfaction and employability and to resilience that allow them to respond to difficulties more flexibly and prevent career discontinuity.

MyotonPRO 시스템을 이용한 여러 근 수축 수준이 천지굴근의 기계적 속성에 미치는 영향 연구

신재민(Jae-Min Shin),공용구(Yong-Ku Kong),이주희(Ju-Hee Lee),심현호(Hyun-Ho Shim),김재경(Jae-Kyeong Kim),조민욱(Min-Uk Cho),박채원(Chae-Won Park),최경희(Kyeong-Hee Choi) 대한인간공학회 2019 大韓人間工學會誌 Vol.38 No.3

Objective: The purposes of this study were to understand the effects of various levels of force exertions on the mechanical properties of hand muscles and to evaluate the correlation between the changes of mechanical properties and muscle fatigue. Background: Understanding mechanical properties of human muscles for any types of activities is very important to prevent muscle damages and injuries. Although electromyography (EMG) has been widely used to investigate the muscle activity and fatigue for human movements, EMG system may need a lot of effort and time to install, measure, and analysis. MyotonPRO which is a very simple and fast measurement device has been developed to understand muscle"s mechanical properties for various activities. There is few study for investigation of the mechanical properties such as stiffness, frequency, and decrement using a MyotonPRO. Method: Twenty healthy young men without orthopedics diseases participated in this study. The mechanical properties (stiffness, frequency, and decrement) of flexor digitorum superficialis were measured by using the MyotonPRO system for various muscle contraction (20%, 40%, 60%, and 80% MVCs) levels. The mechanical properties in resting condition was also measured before and after to understand the fatigue effects. Gender, handedness, pre/post and four-contraction level were assigned as independent variables in this study. Results: Statistical analysis revealed that the effects of gender, force exertion level, and interaction of gender and force exertion level were statistically significant on the both stiffness and frequency of mechanical properties of the flexor digitorum superficialis. Stiffness and frequency also showed generally increased as muscle fatigued based on the study of pre/post analysis. Conclusion: Stiffness and frequency, mechanical properties of flexor digitorum superficialis, showed a positive correlation with gender and force exertion level using a MyotonPRO system. These mechanical properties were also related with muscle fatigue. Application: MyotonPRO would be a good method for evaluating muscle activities of the muscles according to the levels of muscle contractions.

IEEE802.11g를 이용한 차량간 통신 성능 분석

신재민(Jae-min Shin),이덕환(Deok-Hwan Lee),고학림(Hak-lim Ko),오현서(Hyun-Seo Oh),이종현(Jong-heon Lee) 한국통신학회 2005 한국통신학회 학술대회논문집 Vol.2005 No.6