鋼纖維補强 모르터의 特性에 관한 實驗的 硏究

洪益杓 건국대학교 1978 論文集 Vol.7 No.1

The use of fibrous reinforcement to improve the strength and deformation properties of lobe cement matrix is being studied. The purposes of this study are to apply steel fibers within the plain mortar, to improve the properties of the plain mortar, and to extend to the applicability of the fibrous reinforcement to other cement matrix structures. The studies described herein were carried out experimentally to check the effect of steel fibers in determining consistency in the 7esh state, to improve the properties in the hardened state, and to compare the properties of fibrous and plain mortar. In the study, the size of test specimen was used a □ 10 cm × 20 cm, the fibre sizes used for the entire project were 0.3 mm × 0.3 mm × 30 mm (aspect ratio: 100) and 0.5 mm × 0.5 mm × 30 mm (aspect ratio :60) steel fiber manufactured, the fiber volume percentages were used 0.25, 0,50, 0.75, 1.00 (aspect ratio :100) and 0.5, 1.0, 1.5, 2.0 (aspect ratio :60) percentage by volume of cement, fine aggregate, and water, and to define water cement ratio effects, three different water cement ratios were applied 50, 55, 60 percentage. The results of this study are concluded as follows ; 1.The effect of Consistency of the steel fibrous mortar is worse than that of the plain mortar. 2.The effect of water cement ratio upon the compressive and tensile strength of the steel fibrous mortar is definitely lower due to the increased water cement ratio. 3.The addition of steel fibers to mortar increases the compressive and tensile strength significantly. 4.The ultimate cracking strain of the fibrous mortar is increased to many times greater than that of the unreinforced mortar. 5.The role of steel fibres is essentially to arrest any advancing cracks by applying pinching forces at the crack tips.

정신보건법의 주요 쟁점 조항에 대한 선진국과의 사례 비교

홍진표,황순찬,박수빈,서동우,정은기,김진학,박종익,안주연,김수정,장홍석 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.2

Objectives The Mental Health Act is an initiative aimed at changing and shaping mental health services and protecting human rights of persons with mental disorders. Since the Mental Health Act was legislated in 1995, four amendments have been made according to the issues that arose from public concerns. However, there are still many debates about the human rights protection of the mentally iII. This study aimed to provide information regarding major aspects of the Mental Health Act by comparing them among several developed countries. Methods Current Mental Health Acts of the state of Michigan in the United States, Scotland in England, the state of Victoria in Australia, and Japan were reviewed. Issues regarding the Korean Mental Health Act were collected from seminar materials, news media contents, and mental health professionals Results The definition of subjects in Korean Mental Health Act was more inclusive than other countries and was derived from a medical classification of mental illness. Family members or guardians were granted important responsibilities for deciding the involuntary admission of mentally ill patients in Korea and Japan. In Western countries, Mental Health Review Tribunals or courts have the primary responsibility for important decisions about mentally ill patients. The regulation of immediate dis- charge after request by voluntarily admitted patients was not enacted in all countries except Korea. The mandatory procedure for involuntary admission in Western countries includes an individual case review with personal interview by a Mental Health Review Tribunal or court. Conclusion The Korean Mental Health Act appears to meet the basic standards of Guidelines from international organizations. Our traditional culture and inherent health systems seem to influence the legal regulation of mental health service and might be related to the problems of human rights protection of mentally ill patients in Korea.

인접평균 알고리즘과 웨이블릿 변환을 이용한 워터마킹 방법

홍익표,김인택,한승수 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

A new and efficient blind watermarking technique is proposed in this paper. The original image is transformed to frequency domain using wavelet transform, and the watermark is embedded to mid-frequency area via neighbor's meal value algorithm. This algorithm is a kind of blind watermarking technique, and embeds watermark using neighbor's mean value. According to the mean value, the watermark is embedded selectively and a flag is generated. We tested the robustness of this technique using JPEG compression, collusion, noise addition, and resize attacks. The results show the proposed method have good characteristics such as good watermarked image quality, robustness to various attacks.

한국판 분열형 성격척도의 타당화 예비연구

함웅,김묘은,이흥표,양익홍,문희옥 大韓神經精神醫學會 1997 신경정신의학 Vol.36 No.2

In order to product and develop questionnaire which can assess the schizotypal personality by model of criteria in DSM-Ⅲ-R, it was presented following question in this study. First, for the validation and manufacture of scale and sub-subscale that assess overall feature, nine characteristics of the schizotypal personality disorder, this study was concerned with validity, reliability and factor-analysis results of schizotypal personality questionnaire. Second, we would by present how schizotypal personality disorder trend is connected with trait-anxiety, hopelessness and self-concept. Also the difference is compared with. Finally, 396(male 216 Ss/53,8%, female 180 Ss/45.5%) college students with mean age 21.2 years were sampled. Raine(1991)'s schizotypal personality questionnaire(SPQ) which assess nine characterisitics of schizotypal personality disorder in DSM-Ⅲ-R was translated and used. In this results, Raine's schizotypal personality questionnaire was appeared to have high internal validity, split-half reliability and test-retest reliability. Also, 6 factors were affirmed by empirical confirmation through factor-analysis. 6 factors have been very reliable internal validity that ranges from .78 to .83. In these 6 factors, idea of reference, odd or eccentric behavior and odd speech were corresponded to the category model after DSM-Ⅲ-R in Raine's scale. 'Cognitive, perceptive' dimension was centered of factor 1, 'Emotive, affective' dimension was centered of factor 2, social anxiety and constricted affect were constituted to 2nd factor. No close friends, schizoid trend and suspiciousness of schizotypal characteristics were constituted to 3rd factor by 'interpersonal relationship' dimension. These empirical outcomes which confirmed through factor-analysis were very valid and connected much to Raine's scale which assessed schizotypal personality disorder, thus possibility of development and manufacture of schizotypal personality disorder scale through item revision was lighten. In 2nd study the higher schizotypal personality disorder trend, trait-anxiety and hoplessness were higher. But on the contrary, self-concept was lower. The group of high score in schizotypal personality questionnaire had more trait-anxiety and hopelessness than the group of low score in schizotypal personality questionnaire. Contrastly, positive self-concept was high in the group of low score. Also the most predictable variable to the trait-anxiety was factor 2, predictable power R²of factor 2 was 29.1%. To the hopelessness, factor 2 was the most powerful predictable variable. Predictable power of factor 2 was 11.2%, also. In self-concept, factor 2 explained 20.8% of self-concept, thus it was presented that factor 2 had the most powerful explanatory quantity. In these consequences, the factors which have meaningful connection to the trait-anxiety, hopelessness and low self-concept within 6 factors were really factor 2, 3, 1. Among these factors, "Emotive' feature of factor 2 including social anxiety and constricted affect have the most effect on trait-anxiety, hopelessness and self-concept. And next to factor 2, the isolated interpersonal relation which include no close friends and schizoid trend was some influential variable. Also peculiar, unusual preceptual experience, eccentric belief and magical thinking had some effect though small. The college students who had strong schizotypal personality trend had more social anxiety and more constricted emotional empathic ability, less self-expression, less social skill than common college sudents. These elements threaten, interrupt and retard identity establishment and intimacy-seeking which are important developmental tasks within this period. These experiences is accepted to ego-dystonic to schizotypal college students who have some or moderate reality testing, adaptive ability. Moreover, These peoples would feel locus of contol externally, not internally and would have more control-failure experiences. All these elemets elevate anxiety level, give rise to low self-concept and low expectation to the future. These outcomes all confirmed questions which presented in this study.

정신보건관련시설 입원(소)자의 주요 정신장애 유병률 : 전국 20개 시설의 입원(소)자를 대상으로

조성진,조맹제,서동우,함봉진,홍진표,배재남,이준영,이동우,박종익,전홍진,김성주,김용익 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.6

Objectives : One of the objectives of this study is to estimate the prevalence rates of psychiatric diagnoses in the combined populations of psychiatric hospitals, psychiatric nursing facilities and homeless asylums using the Korean version of the Composite International Diagnostic Interview (K-CIDI), which is a comprehensive and fully standardized interview schedule to assess psychiatric disorders for diagnosis. The Other objective is to compare with previously studied prevalence rates of Psy-chiatric diagnoses using the results of this study. Methods : The study subjects, aged from 181o 64 years, were randomly selected from 64,582 institutionalized population of psychiatric hospitals, Psychiatric nursing facilities and homeless asylums as of 30, June, 2001. Twelve trained interviewers administered the K-CIDI to the selected respondents. A total of 1,875 respondents (male 1,194, female 681) completed the interview. Results : The lifetime and one year prevalences of any diagnosis excluding nicotine dependence · withdrawal, anxiety disorder, eating disorder, somatoform disorder were 88.2% (male 88.1%, female 88.3%), and 65.8% (male 62.7%, female 73.7%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were 78.5% (male 75.3%, female 83.7%), and 56.8% (male 51.9%, female 64.8%), respectively. The lifetime and one year prevalences of alcohol use disorder (dependence/abuse) were 26.7% (male 37.9%, female 8.3%), and 8.7% (male 12.8%, female 2.1%), respectively. The lifetime and one year prevalences of mood disorder were 18.1% (male 13.5%, female 25.8%), and 10.4% (male 7.2%,female 16.9%), respectively. The lifetime and one year prevalences of schizophrenia and other psychotic disorders were comparable with the 2001 community survey by 1.19% to 1.32%, and 0.51% to 0.61%, respectively. The lifetime and one year prevalences of schizophrenia were also comparable by 0.16% to 0.28%, and 0.16% to 0.25%, respectively. There were no significant changes of prevalence rates when correction were applied to other psychiatric diagnosis. Conclusion : The results of this study could be used for evaluating the distribution of psychiatric diagnoses in mental health related facilities and for planning mental health policies.

Preparation and Application of ACFs Derived from the Petroleum Pitch and the Organometallic Compounds

Hong, Ik-Pyo,Ha, Baik-Hyon 한국탄소학회 2002 Carbon Letters Vol.3 No.3

Activated carbon fibers were prepared from the petroleum isotropic pitch and organometallic compounds. The metalsvwere dispersed uniformly in the ACFs. The specific surface area and pore size distributions of metal containing ACFsvwere measured. The mesopores of ACFs were developed by Co, Ni, and Mn metals addition and the catalytic reactivityvof ACFs'SOx removal was increased by adding Ni and Pd metals. It was found that the mesopores did not work forvthe improvement of catalytic reactivity of ACFs' SOx removal with the blank experiment using the metal removedvACFs.

The Perception of Robots in Everyday Life through Diary Method and Network Analysis

( Ik Pyo Hong ),( Ji Hyoun Lim ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-

Recently robots have been developed for various purposes, and are expected to become an important part of human society. Therefore, Human-Robot Interaction (HRI), the study of the relationship between humans and robots, needs to be applied to various fields. However, criteria to specify types of robots are not clear, so interaction between humans and robots remains unspecified. In this study, we investigated the types of robots which currently exist as physical or functional prototypes, then classified them using two aspects (degree of substitution of humans, range of functions). Further, on the basis of the classification criteria, we investigated situations in which human would find potential needs for robot in everyday human activities. Utilizing the technique of the diary method, a qualitative research method, participants in six different jobs freely wrote about when, why, and how they needed robots in everyday activity. Using the data obtained from the diary method we conducted a time-series analysis, a classification analysis using the International Classification of Activities for Time-Use Statistics (ICATUS) of the UN Statistics Department, and Semantic Network Analysis.

HRI 경험의 유무에 따른 로봇에 대한 인식 변화에 대한 연구

Ik-pyo Hong,Jung Rim Oh,Ji Hyoun Lim 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.11

Objective: 로봇과의 상호작용 경험은 로봇에 대해 느끼는 긍정적, 혹은 부정적 인식에 변화를 준다. 이러한 인식의 변화를 검증하기 위하여 로봇에 대한 경험을 조건화하여 이에 따른 로봇에 대한 인식을 정량화하여 그 변화를 살펴보고자 한다. Background: HRI 분야에서 로봇과 사람 사이의 정서적인 상호작용에 대한 연구는 활발히 진행되고 있으며, 선행연구에서 로봇의 행동을 통해 정서가 전달됨을 확인하였다. 본 연구에서는 로봇과 상호작용한 경험이 이후 사람의 행동에 영향을 미친다는 기존 연구를 기반으로, 로봇과의 상호작용 경험 유무에 따라 사람이 로봇에 대하여 느끼는 인식에 차이가 존재하는지 알아보았다. Method: 20대 남녀 52명에게 인사하기, 부인하기, 칭찬하기, 부르기, 파이팅 등의 기본적인 행동에 대한 사람, 로봇의 움직임 영상을 보여주었다. 사전에 로봇을 경험했던 그룹과 그렇지 않은 그룹으로 나누어 영상을 보기 전과 후에 느껴지는 인식에 대한 설문을 진행하였다. Results: 구간척도를 사용하여 수집한 응답에 대한 분석 결과 그룹 간에 통계적으로 유의한 차이는 발견되지 않았으나, 주관식으로 수집한 응답에 대하여 진행한 의미망 분석에서 그룹 간에 차이점과 네트워크 구조 간 차이를 확인하였다. Conclusion: 의미망 분석 결과 로봇과의 상호작용은 사람의 인식 변화에 영향을 끼친다고 할 수 있다. 경험 그룹은 로봇을 파트너로 인식한 반면 미경험 그룹은 친구로 인식하는 등 분명한 차이를 보이고 있으며 이는 단순 설문 분석방법 보다 보완적 분석의 필요성을 나타낸다. Application: .본 연구 결과를 통해 로봇 설계 단계에서 로봇에 대한 인식 변화를 제공하는 요인을 고려할 수 있는 사용자 조사의 기반 자료로 활용될 수 있으리라 기대한다.

The Perception of Robots in Everyday Life through the Diary Method and Network Analysis

Ik-pyo Hong,Ji Hyoun Lim 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5

Recently robots have been developed for various purposes, and are expected to become an important part of human society. Therefore, Human-Robot Interaction (HRI), the study of the relationship between humans and robots, needs to be applied to various fields. However, criteria to specify types of robots are not clear, so interaction between humans and robots remains unspecified. In this study, we investigated the types of robots which currently exist as physical or functional prototypes, then classified them using two aspects (degree of substitution of humans, range of functions). Further, on the basis of the classification criteria, we investigated situations in which human would find potential needs for robot in everyday human activities. Utilizing the technique of the diary method, a qualitative research method, participants in six different jobs freely wrote about when, why, and how they needed robots in everyday activity. Using the data obtained from the diary method we conducted a time-series analysis, a classification analysis using the International Classification of Activities for Time-Use Statistics (ICATUS) of the UN Statistics Department, and Semantic Network Analysis. The result of this research was that we were able to find how people perceive and recognize the usefulness of robots.

Preparation and Application of ACFs Derived from the Petroleum Pitch and the Organometallic Compounds

Ik-Pyo Hong,Baik-Hyon Ha 한국탄소학회 2002 Carbon Letters Vol.3 No.3

Activated carbon fibers were prepared from the petroleum isotropic pitch and organometallic compounds. The metalsvwere dispersed uniformly in the ACFs. The specific surface area and pore size distributions of metal containing ACFsvwere measured. The mesopores of ACFs were developed by Co, Ni, and Mn metals addition and the catalytic reactivityvof ACFs'SOx removal was increased by adding Ni and Pd metals. It was found that the mesopores did not work forvthe improvement of catalytic reactivity of ACFs' SOx removal with the blank experiment using the metal removedvACFs.