http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
유성(遊星) 김준곤 유성의 설교: 역사적 분석과 그 화두(話頭)
김정우(Jungwoo Kim) 신학지남사 2019 신학지남 Vol.86 No.3
The aim of this paper is to analzye the world of Late Rev. Joon Gon Kim’s Sermons published in CCC Letters (1964∼2005) from rhetorical perspective. The author finds three major characteristics of his sermon in terms of their originality in the history of sermons, the use of clear images and poetical reformulation of biblical narratives. The main genre of his sermon can be identified with a storytelling narrative preaching with preeminent characterization of biblical heroes and heroines. As a preacher who illuminated the word of God in his historical context with a widespread sensitivity of his times like Albert Camus and leap of faith like Soeren Kierkegaard, the author divides his preaching into three main periods such as (1) Incipient Period (1958∼1974): Missional preaching to college students and National Evangelism, (2) CCC Chapel Period (1976∼1989): Pastoral preaching to college students and the Whole counsel of God, (3) the Latter Period (1990∼2005): Engagement of Christian Charity to the North Korea and “One Single Answer to Hundred Questions” in Jesus. One major question of his sermon throughout his whole life has been “where does the river of spirit history (namely, religions, philosophies, literatures and cultures) flow?” The author summarizes the major distinguishing legacy of his sermon in terms of “Gospel preaching” in the stage of modern history of Korea, “Gospel meditation” narrated in the stage of intellectual history of humanity and “Visionary sermon” aiming at eschatological mission community in the context of historical upheavals.
An Immersed-Boundary Finite-Volume Method for Simulation of Heat Transfer in Complex Geometries
Kim, Jungwoo,Park, Haecheon The Korean Society of Mechanical Engineers 2004 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.18 No.6
An immersed boundary method for solving the Navier-Stokes and thermal energy equations is developed to compute the heat transfer over or inside the complex geometries in the Cartesian or cylindrical coordinates by introducing the momentum forcing, mass source/sink, and heat source/sink. The present method is based on the finite volume approach on a staggered mesh together with a fractional step method. The method of applying the momentum forcing and mass source/sink to satisfy the no-slip condition on the body surface is explained in detail in Kim, Kim and Choi (2001, Journal of Computational Physics). In this paper, the heat source/sink is introduced on the body surface or inside the body to satisfy the iso-thermal or iso-heat-flux condition on the immersed boundary. The present method is applied to three different problems : forced convection around a circular cylinder, mixed convection around a pair of circular cylinders, and forced convection around a main cylinder with a secondary small cylinder. The results show good agreements with those obtained by previous experiments and numerical simulations, verifying the accuracy of the present method.
An Immersed-Boundary Finite-Volume Method for Simulation of Heat Transfer in Complex Geometries
Jungwoo Kim,Haecheon Choi 대한기계학회 2004 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.18 No.6
An immersed boundary method for solving the Navier-Stokes and thermal energy equations is developed to compute the heat transfer over or inside the complex geometries in the Cartesian or cylindrical coordinates by introducing the momentum forcing, mass source/sink, and heat source/sink. The present method is based on the finite volume approach on a staggered mesh together with a fractional step method. The method of applying the momentum forcing and mass source/sink to satisfy the no-slip condition on the body surface is explained in detail in Kim, Kim and Choi (2001, Journal of Computational Physics). In this paper, the heat source/sink is introduced on the body surface or inside the body to satisfy the iso-thermal or iso-heat-flux condition on the immersed boundary. The present method is applied to three different problems: forced convection around a circular cylinder, mixed convection around a pair of circular cylinders, and forced convection around a main cylinder with a secondary small cylinder. The results show good agreements with those obtained by previous experiments and numerical simulations, verifying the accuracy of the present method.
Kim, Taehyo,Heo, Jungwoo,Lee, Ji Young,Yoon, Yung Jin,Lee, Tack Ho,Shin, Yun Seop,Kim, In-Sik,Kim, Hyojung,Jeong, Mun Seok,Hwang, In-Wook,Walker, Bright,Jo, Pil Sung,Lim, Bogyu,Kim, Jin Young American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.7
<P>In the field of organic solar cells, it has been generally accepted until recently that a difference in band energies of at least 0.3 eV between the highest occupied molecular orbital (HOMO) level of the donor and the HOMO of the acceptor is required to provide adequate driving force for efficient photoinduced hole transfer due to the large binding energy of excitons in organic materials. In this work, we investigate polymeric donor:non-fullerene acceptor junctions in binary and ternary blend polymer solar cells, which exhibit efficient photoinduced hole transfer despite negligible HOMO offset and demonstrate that hole transfer in this system is dependent on morphology. The morphology of the organic blend was gradually tuned by controlling the amount of ITIC and PC<SUB>70</SUB>BM. High external quantum efficiency was achieved at long wavelengths, despite ITIC-to-PC<SUB>70</SUB>BM ratio of 1:9, which indicates efficient photoinduced hole transfer from ITIC to the donor despite an undesirable HOMO energy offset. Transient absorption spectra further confirm that hole transfer from ITIC to the donor becomes more efficient upon optimizing the morphology of the ternary blend compared to that of donor:ITIC binary blend.</P> [FIG OMISSION]</BR>
복잡한 형상에서의 열유동장 해석을 위한 가상 경계 방법
김정우(Jungwoo Kim),최해천(Haecheon Choi) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.9
A new immersed boundary method for solving the Navier-Stokes and thermal energy equations is developed to compute the flow and temperature fields over or inside complex geometries by introducing momentum forcing, mass source/sink, and heat source. The present method is based on a finite volume approach on a staggered mesh. The method of applying momentum forcing and mass source/sink is explained in detail in Kim, Kim and Choi (2001, Journal of Computational Physics). The heat source is applied on the body surface or inside the body to satisfy the constant temperature or the constant heat flux condition on the immersed body. This method is applied to the problems such as oscillatory flow with heat transfer in a square cavity, forced convection from a circular cylinder, and heat transfer by a pair of circular cylinders under the influence of buoyancy, resulting in good agreements with the existing results obtained by experiments and numerical simulations.
남한강 본류 3개 보의 저서성 대형무척추동물의 공간적 분포
권용주 ( Yongju Kown ),김진영 ( Jin-young Kim ),김필재 ( Piljae Kim ),김정우 ( Jungwoo Kim ),민정기 ( Jeong-ki Kim ),공동수 ( Dongsoo Kong ) 한국물환경학회(구 한국수질보전학회) 2020 한국물환경학회지 Vol.36 No.1
Three large scale weirs were constructed 2010 - 2011 in the Namhan river, Korea. The purpose of this study was to investigate the spatial distribution of benthic macroinvertebrates and the influence of environmental factors at the weirs 2014 - 2015. The number of species was higher in the riparian zone than in the transition or the limnetic zone. This seems to be because of the diversification of microhabitats and food sources according to the development of littoral zones. From the riparian zone to the limnetic zone, the individual abundance proportion of gathering collectors among functional feeding groups decreased, and that of filtering collectors increased. In the limnetic zone, sprawlers and climbers among habitat orientation groups decreased, and burrowers increased. This means that coarse particulate organic matter originated from land or riparian zone was transformed to fine particulate organic matter in the limnetic zone. Asian clam (Corbicula fluminea) and chironomids were dominant species based on individual abundance. Asian clam, a major taxon considering biomass, was abundant toward the limnetic zone. This is becasue of the shallow depth, suitable water current, slightly coarse substrate, and good water quality. There was no significant relationship between the water quality and the characteristics of the benthic macroinvertebrate community because the water quality was spatially not heterogenous. The more influential factors for benthic community were physical factors, especially water depth. Water depth showed a markedly significant correlation with Shannon-Weaver’s species diversity (r=-0.90), Margalef’s species richness (r=-0.82), and McNaughton’s dominance (r=0.86). Water depth showed a positive correlation (r=0.68) with the Kong and Kim BMSI (Bentic Macroinverebrates Streambed Index), and this may be related to the coarse substrate of the limnetic zone.