인생 주기 소명 교육, 성경을 통해 보이신 신앙여정의 지도

신형섭 장로회신학대학교 기독교교육연구원 2024 교육교회 Vol.535 No.-

원격탐사 기술의 토사정보 활용방안 - 토사에 의한 탁수 환경을 중심으로 -

신형섭,박종화,김규호,Sin, Hyeong-Seop,Park, Jong-Hwa,Kim, Gyu-Ho 한국수자원학회 2010 물과 미래(한국수자원학회지) Vol.43 No.2

마그네슘합금(AZ31B) 판재의 마찰교반 점용접시 접합특성에 미치는 툴 속도의 영향

신형섭,정윤철,최광,Shin, Hyung-Seop,Jung, Yoon-Chul,Choi, Kwang 대한용접접합학회 2011 대한용접·접합학회지 Vol.29 No.2

In this study, the friction stir spot welding (FSSW) of Mg alloy sheets has been tried using an apparatus devised with a CNC milling machine to give the precise control of joining condition including tool speed. The probe tool used is made of hard metal and composed of cylindrical shoulder and pin parts. The variation of morphologies formed after the friction stir spot welding depending on the plunge speed of the tool were investigated at each rpm of tool. The history of the temperature distribution and the vertical load induced during the spot welding with friction time were measured by using an Infrared Thermal Imager (THERMA CAMTM SC2000) and a loadcell located below the specimen fixture, respectively. Tensile-shear tests were also performed to evaluate the fracture load of welded specimens. In order to characterize the friction stir spot welding of Mg alloy sheets, the variation of the fracture load was discussed on micrographic observations, temperature distribution during the FSSW according to the plunge speeds of tool.

스피넬 페라이트의 비이완 표면에너지 계산

신형섭,손정호,Shin, Hyung-Sup,Sohn, Jeongho 한국재료학회 2015 한국재료학회지 Vol.25 No.12

A new method is proposed for the calculation of the unrelaxed surface energy of spinel ferrite. The surface energy calculation consists of (1) setting the central and computational domains in the semi-infinite real lattice, having a specific surface, and having an infinite real lattice; (2) calculation of the lattice energies produced by the associated portion of each ion in the relative domain; and (3) dividing the difference between the semi-infinite lattice energy and the infinite lattice energy on the exposed surface area in the central domain. The surface energy was found to converge with a slight expansion of the domain in the real lattice. This method is superior to any other so far reported due to its simple concept and reduced computing burden. The unrelaxed surface energies of the (100), (110), and (111) of $ZnFe_2O_4$ and $Fe_3O_4$ were evaluated by using in the semi-infinite real lattices containing only one surface. For the normal spinel $ZnFe_2O_4$, the(100), which consisted of tetrahedral coordinated $Zn^{2+}$ was electrostatically the most stable surface. But, for the inverses pinel $Fe_3O_4$, the(111), which consisted of tetrahedral coordinated $Fe^{3+}$ and octahedral coordinated $Fe^{2+}$ was electrostatically the most stable surface.

CFRP적층판의 충격손상특성 및 손상거동에 미치는 초기굽힘의 영향

신형섭,서창민,황남성 대한기계학회 1994 대한기계학회논문집 Vol.18 No.5

Damage caused in CFRP laminates by low energy impact of steel ball are investigated ultrasonically. Two types of laminated specimens having different stacking sequence are used as a target material. The effects of pre-bending on the behaviors of impact damage are specifically discussed. The initiation and progagation behaviors of delamination were largely dependent upon the bending rigidity of each specimen. Specimen C having higher bending rigidity produced larger delamination damage than the Specimen D having relatively low bending rigidity, however it was little for the Specimen C. Application of pre-bending increased the apparent bending rigidity of target during impacting, it produced delamination at lower impact energy level compared to the case of no preload.

취성재료의 손상후 잔류강도 평가

신형섭,오상엽,서창민,Sin, Hyeong-Seop,O, Sang-Yeop,Seo, Chang-Min 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.5

In structural applications, brittle materials such as soda-lime glasses and ceramics are usually subjected to multiaxial stress state. Brittle materials with cracks or damage by foreign object impacts are apt to fracture abruptly from cracks, because of their properities of very high strength and low fracture toughness. But in most cases, the residual strength of structural members with damage has been tested under uniaxial stress condition such as the 4-point bend test. Depending upon the crack pattern developed, the strength under multiaxial stress state might be different from the one under uniaxial. A comparative study was carried out to investigate the influence of stress state on the residual strength evaluation. In comparable tests, the residual strength under biaxial stress state by the ball-on-ring test was greater than that under the uniaxial one by the 4-point bend test, when a small size indendation crack was introduced. In the case that crack having an angle of 90deg. to the applied stress direction, the ratio of biaxial to uniaxial flexure strength was about 1.12. The residual strength was different from crack angles to loading direction when it was evaluated by the 4-point bend test. The ratio of residual strength of 45deg. crack to 90deg. one was about 1.20. In the case of specimen cracked by a spherical impact, it was shown that an overall decrease in flexure strength with increasing impact velocity, and the critical impact velocity for formation of a radial and/or cone crack was about 30m/s. In those cases that relatively large cracks were developed as compared with the case of indented cracks, the ratio of residual strength under biaxial stress state to one uniaxial became small.

극저온에서 고강도 실용 초전도복합선재의 임계전류에 미치는 횡방향압축응력효과 ( Effects of Transverse Compressive Stress on Critical Current in High Strength Practical Superconducting Composite Wires at Cryogenic Temperature )

신형섭,이해무,K. Katagiri 대한기계학회 1996 대한기계학회 춘추학술대회 Vol.- No.-

A Study on the Implications of Christian Education on the Relationship between the Formation of Faith and Digital Literacy

신형섭,Shin, Hyoung-Seop The Korean Society of Christian Religious Educatio 2021 기독교교육논총 Vol.- No.65

The purpose of this study is to find the implications of Christian education on the relationship between the formation of faith and digital literacy in the Korean society, which is rapidly changing within the fourth Industrial Revolution today through critical conversations on educational contexts. Over the past decade, Korean society has lived in an era of rapid and radical change more than any other time through a new way of life called the Fourth Industrial Revolution. The Korean church is also facing the reality that it must fulfill its urgent mission to deliver the unchanging truth in an ever-changing era. With this in mind, this study (1) identifies digital literacy as an essential competency requested in the era of the fourth industrial revolution by examining the relationship with congregation's life as well as its definition and contents, (2) discovers educational rationale for the relationship between faith formation and digital literacy by applying educational context of Christian education with attention to the educational efficiency of digital literacy, and (3) finds educational implications of digital literacy by re-conceptualizing the contents, context, role of teachers and students, and evaluation in the context of Christian education. I hope that this study will help Christian education serve for the spread of the Gospel of Christ and the realization of the kingdom of God on this earth through digital media in the future more time-responsively and mission-practically.

회중론적 관점에서 이해한 3040세대에 대한 교육목회의 함의점 연구

신형섭 한국기독교교육학회 2023 기독교교육논총 Vol.- No.74

연구 목적 : 본 연구는 회중론적 관점에서 한국교회의 3040세대에 대한 보다 비판적이고 통전적인 이해를 통하여 3040세대 회중을 향한 보다 합당한 목양를 실천할 수 있는 교육목회적 함의점들을 발견하는데 목적이 있다. 연구 내용 및 방법 : 먼저, 회중론과 교육목회와의 연계성에 대한 성서적, 신학적, 교육적 근거들을 살펴보았다. 그리고 3040세대에 대한 연령 발달적, 신앙발달적, 사회문화적 접근을 통해 3040세대의 회중론적 이해와 특징들을 기술하였고, 회중론적 관점에서 본 3040세대에 대한 교육목회적 함의점들을 제시하였다. 결론 및 제언 : 본 연구는 한국교회 3040세대의 특징과 세대간 역동성을 주목하며 회중론적 관점에서 네가지 교육목회적 함의로서 1) 다양한 가정유형을 고려한 가정친화적 교육목회로의 전환, 2) 복음과 삶의 이슈가 만나는 전생애주기적 제자양육으로의 강화, 3) 올라인 목회(all-line ministry)를 기반으로 하는 협업형 소그룹의 강화, 4) 더 나은 세상을 향한 창의적이고 복음적인 ESG 사역의 개발과 실천을 제언하였다.

계장화한 긴 바를 사용한 세라믹판의 충격 파괴 거동

신형섭,오상엽,최수용,서창민,장순남,Sin, Hyeong-Seop,O, Sang-Yeop,Choe, Su-Yong,Seo, Chang-Min,Jang, Sun-Nam 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.4

In this study, a bar impact test of low velocity was carried out to gain an insight into the damage mechanism and sequence induced in alumina plates(AD 85 and AD 90) under impact conditions. An experimental setup utilizing an instrumented long bar impact was devised, that can measure directly the impact force applied to the specimen and supply a compressive contact pressure to the specimen. During the bar impact testing, the influences of the contact pressure applied along the impact direction to the specimen on the fracture behavior were investigated. The measured impact force profiles explained well the damage behavior induced in alumina plates. The higher contact pressure to the specimen led to the less damage due to the suppression of radial cracks due to the increase in the apparent flexural stiffness of plate. It had produced the change of damage pattern developed in the specimen; from the radial cracks to the local contact stress dominant damage. It would contribute to the improvement of the ballistic property in ceramic plates. The observed results showed the following sequence in damage developed: The development of cone crack at impact region, the formation of radial cracks from the rear surface of plate depending on the plate thickness, the occurrence of crushing within the cone envelope and the fragmentation.