低溫 燒成用Vitrified硏削 숫돌 제조에 관한 硏究

李秉夏,노태준 명지대학교 1984 明大論文集 Vol.15 No.-

The manufacturing method of the abrasive grinding wheels fired at low temperature (1000˚C) was developed, and the major crystal phase of the frits in the binders of the abrasive grinding wheels was Li_2SiO_3. The abrasive grinding wheels with 28 various binders examined pill tset, fired at 1000˚C with two hours' duration time at the same temperature, were investigated by measurements of the bonding strength and destruction strength. The optimum weight percent of the frit in the binders was found to be 50 wt% and the heating rate was 200˚C per hour from the room temperature to 500˚C and 120˚C per hour above 500˚C. Since the bonding strength depends upon the weight ration of clay, silicate, alumina and frit, it can be arbitrarily controlled by variation of the compositions.

가구모델링 교육에 관한 예시 및 연구

이병하 전남도립대학교 2004 전남도립대학교 논문집 Vol.6 No.-

While design process is accounted in the first place in the education of furniture design in college, and outputs of students' practical work are actually repeated trials and errors; design process - composed of design, planning, drawing, modelling - is worthwhile especially in furniture design where such factors like productivity, consuming patterns, fashion and market of that time should be considered. Deduction of modelling in education of furniture design, as a convenient method to verify the outcomes of developing approach and plan of various furniture designs, could be altrnative measures to reduce time, expenses, and manpower efficiently. So some valuable results could be found out through courses of modelling based on design process in college education.

π-type 압전 하베스터의 출력 특성 연구

이병하,정성수,천성규,하용우,박태곤,Lee, Byeong-Ha,Jeong, Seong-Su,Cheon, Seong-Kyu,Ha, Yong-Woo,Park, Tae-Gone 한국전기전자재료학회 2015 전기전자재료학회논문지 Vol.28 No.1

Generating output characteristics of a ${\pi}$-type piezoelectric harvester depending on size of the ceramic and the elastic body were studied. The ${\pi}$-type piezoelectric harvester consists of a rectangular piezoelectric ceramic and a ${\pi}$ shaped elastic body. If the tensions is applied at both ends of an elastic body legs, the piezoelectric effect occurs at the ceramics through the form change of the elastic body. The structure of this ${\pi}$-type harvester can be used in a various area than an existing type generator, because it prevent from direct pressure to the ceramic. Generating characteristics of the harvester were analyzed by using finite element method program. The piezoelectric harvester was fabricated on the basis of analyzed results and attached on a frequency controllable vibrator to measure the output characteristics. And generating characteristics were defined by comparing analysis results and experimental results. The highest output voltage was obtained when the ceramic length, thickness were 20 mm, 0.5 mm in the analysis result. And experiment was performed by analysis results at low frequency region, output voltage was generated about 6 V.

기획특집_전(電)력질주 - UAE 브라카 원자력발전소

이병하,Lee, Byeong-Ha 대한전기협회 2012 전기저널 Vol.- No.425

글로벌 이주 거버넌스 2.0의 등장: GCM 사례를 중심으로

이병하 연세대학교 동서문제연구원 2019 동서연구 Vol.31 No.4

This paper aims to examine ‘Global Compact for Migration,’ which was adopted by the UN Assembly in December, 2018. It also focuses on institutional change of global migration governance, and its characteristics by utilizing theoretical framework drawn from historical institutionalism. Although the issues of international migration have become more complex due to its linkage with other IR issues, global migration governance is quite underdeveloped. This research pays attention to the emergence of GCM, and analyzes the historical development of global migration governance. From those analyses, this paper tries to assess the characteristics of GCM, and to prospect its future. This paper regards the characteristics of institutional change shown in the case of GCM as ‘layering,’ and it pays attention to what the new elements were added to the previous institutional settings such as the institutional changes within the UN. Finally, this research expects that GCM will provide a variety of actors in the area of international migration with the common norms and an institutionalized space for discussion. 본 연구의 목적은 2018년 12월 유엔 총회에서 채택된 ‘이주에 관한 글로벌 컴팩트’의 등장을 글로벌 이주 거버넌스의 제도적 변화로 이해하고, 그 성격을 역사적 제도주의의 이론적 틀을 활용하여 분석하는 것이다. 국제이주 문제가 다른 국제관계적 이슈와 연계되면서 그 복합성이 증대되어 글로벌 거버넌스적인 해결방식이 중요해졌음에도 불구하고, 글로벌 이주 거버넌스는 저발전된 상태였다. 본 연구는 ‘이주에 관한 글로벌 컴팩트’의 등장에 주목하여 글로벌 이주 거버넌스의 역사적 발전과정을 분석함으로써 ‘이주에 관한 글로벌 컴팩트’의 성격과 전망을 도출하고자 한다. 또한 글로벌 이주 거버넌스의 제도적 변화의 유형을 ‘중첩’으로 파악하고, 기존 제도의 중심성이 지속되는 가운데 유엔 내 제도적 변화와 같은 새로운 요소가 추가된 것에 주목하고자 한다. 마지막으로 본 연구는 ‘이주를 위한 글로벌 컴팩트’는 향후 국제이주와 관련된 다양한 행위자들에게 공통의 규범을 제시하고, 제도화된 토론의 장을 제공할 것으로 전망한다.

사료의 선택과 사료교체시 주의할점

이병하,Lee, Byeong-Ha 대한양돈협회 1994 養豚 Vol.16 No.5

유극수신도비

이병하,송기면 전북역사문화학회 2007 전라북도금석문대계 Vol.1 No.-

이주에 관한 국제협력과 동아시아 이주 거버넌스 구축의 가능성

이병하 한국사회역사학회 2019 담론 201 Vol.22 No.1

This paper aims to examine the current status of international cooperation on migration at the global and regional levels, and to explore how to construct migration governance in East Asia. Although international migration as a significant transnational issue requires global governance system, global migration governance is quite underdeveloped. While global migration governance is gradually enhanced, Regional Consultative Processes(RCPs) have developed as a multilateral form of international cooperation on migration. With recognition of the weakness of migration governance in East Asia, this paper aims to propose the principles of the migration governance such as adherence to global standards, discussion using objective data, and strong partnerships. It also argues that migration governance in East Asia needs to be built as a multilayered architecture. I suggest that East Asian states should consider establishing so-called East Asian Migration Network for creating objective data on migration in East Asia. Finally this paper claims that the states need to adopt an incremental approach to constructing migration governance in East Asia. 본 논문은 이주에 관한 국제협력의 현황을 글로벌 수준과 지역 수준으로 나누어 살펴보고, 동아시아 이주 거버넌스의 형성 방안을 모색 하고 있다. 초국가적 이슈인 국제이주의 문제를 해결하기 위한 글로벌 거버넌스의 필요성이 증가하고 있음에도 불구하고, 국제이주 분야의 글로벌 거버넌스 체제는 저발전된 상황이다. 이주에 관한 글로벌 수준의 협력이 서서히 가시화하고 있는 동안, 지역 수준에서는 지역협의체 방식이 발전하고 있다. 본 논문은 동아시아 지역의 이주 거버넌스가 취약하다는 문제의식 하에 동아시아 이주 거버넌스의 형성 방안을 제시하고자 하였다. 본 논문은 동아시아 이주 거버넌스의 원칙으로 글로벌 기준과의 정합성, 객관적 데이터에 근거 한 논의, 강한 파트너십을 제시하고 있다. 또한 동아시아 이주 거버넌스는 다층적 거버넌스 체제를 지향하고, 객관적 정보를 공유하기 위한 동아시아 이주 네트워크를 구축해야 하며, 의제 설정 단계, 합의 구축 단계 등 단계별로 점진적 접근법이 필요하다고 주장한다.

공침법에 의한 $Ba_2Ti_9O_{20}$ 합성과 $ZrO_2$ 첨가효과에 관한 연구

이병하,이경희,이헌식,전성용 한국세라믹학회 1993 한국세라믹학회지 Vol.30 No.12

To obtain a single phase of Ba2Ti9O20 at lower temperature than previious other researches. We investigated the effect of Zr substitution for predetermined portions of Ti in Ba2Ti9O20. In this study, the four compounds(x=0, 0.028, 0.048, 0.068) of Ba2(Ti1-xZrx)9O20 were prepared by coprecipitation reaction of BaCl2, TiCl4 and ZrOCl2 with (NH4)2CO3 and NH4OH as the coprecipitating agents and pH regulators, in queous solution. Owing to 4.8 mol% addition, the single phase of Ba2Ti9O20 showing high Q was obtained at 115$0^{\circ}C$ which is lower by 25$0^{\circ}C$ than the temperature in case of mechanical mixtures of BaCO3 and TiO2.

동축형 공진기용 $(PbCa)ZrO_3$ 분말의 합성

이병하,이경희,윤성화 한국세라믹학회 1993 한국세라믹학회지 Vol.30 No.8

To obtain a higher dielectric constant material, we investigated Ca substitution for Pb in PbZrO3. In this study, the four mixtures of (Pb0.68Ca0.32)ZrO3, (Pb0.65Ca0.37)ZrO3, (Pb0.63Ca0.37)ZrO3, and (Pb0.60Ca0.40)ZrO3 were prepared by coprecipitation reaction of Pb(NO3)2, ZrOCl2, and CaCl2 with (NH4)2CO3 and NH4OH in aqueous solution. The (Pb1-xCax)ZrO3 with different x mole fractions (x=0.35, 0.37) showed not only high dielectric constant, but also high Q values and low temperature coefficient of the capacitance.