항상소득과 비인적자산이 주택점유에 미치는 영향

이채성,Lee, Chae-Sung 한국주거학회 2009 한국주거학회 논문집 Vol.20 No.4

The purpose of this study is to identify which is the better indicator to forcast housing tenureship between permanent income and current income, and study the effects of non-human capital asset on housing tenureship. To forcast permanent income, a statistic regression equation is used with current income as the dependent variable. Multi-nomial logistic model is used to forcast the housing tenureship Using current income as the dependent variable delivered a more accurate result than using permanent income. Current income is used as a dependent variable and sex, age, education and occupation are used as independent variables to forcast permanent income. Non-human capital asset is also used as an independent variable. Also, excluding non-human capital asset variable when forcasting bothe permanent income and housing tenureship proved to be more accurate. Because permanent income, the sum of future income and current asset, is a good indicator of current consumption including housing, the result with permanent income should be more accurate than the forcast using current income. This implies an underdevelopment of a housing mortgage system that enables people to consume now on the basis of their future income. The Korea's unique Chonsei housing rental system has also made it difficult to forcast housing tenureship based on people's permanent income and asset. While, the Key-money of Chonsei housing and the housing asset of homeowners with debt are very similar in their amount, the result is completely different. One is a renter and the other is a homeowner.

주거점유상태와 주택형태에 따른 기혼자의 주거 만족도

이채성,Lee, Chae-Sung 한국주거학회 2012 한국주거학회 논문집 Vol.23 No.1

The purpose of this study is to understand the factors that influence residents' satisfaction with their housing. Resident's satisfaction is mainly influenced by two factors - one that pertains to housing and the other as per characteristics of the individual. Housing-related factors include housing types, housing tenure types, and size of floor space. Individual-related factors include household income, size, and education level. This study shows how both factors influence residents' satisfaction. Residential satisfaction is affected by the type of housing tenure (own, chonsei and monthly rent) and housing (detached housing, apartment and multi-family housing). Residential satisfaction of home owners is greater than that of chonsei renters or monthly renters. Residential satisfaction of chonsei renters is greater than that of monthly renters. Satisfaction of apartment residents is far greater than that of detached housing residents or multi-family housing residents. There is no difference in residential satisfaction between detached housing and multi-family housing residents. As total household labor income, household member, and residential area increase, residential satisfaction increase. Residential satisfaction of countryside residents is greater than that of metropolitan residents.

코끼리조개의 인공종묘생산에 관한 연구 II. 난발생과 유생의 발달

이채성,노섬,Lee, Chae-Sung,Rho, Sum 한국양식학회 1997 韓國養殖學會誌 Vol.10 No.1

코끼리조개의 인공종묘생산 기술개발의 일환으로 성숙된 모패를 절개법에 의하여 인공수정시켜 난 발생 및 유생의 발달과정을 관찰한 결과를 요약하면 다음과 같다. 코끼리조개의 난은 분리침성란으로 나타났으며, 방란직후 알의 모양은 타원형이나 수정이 되면 직경 $70\mu$m의 구형으로 된다. 수정난의 발생은$ 11^{citc}C$에서 4시간 후 4세포기로 되고, 2일이 지나면 담륜자 유생(trochophore larvae), 수정 후 3일째에는 D상 유생, 23일째에는 각정기, 36일째에는 성숙유생으로 되었다. 수온(w)에 따른 각 단계별 소요시간(t)의 관계를 보면, 8세포 : 1/t=0.0209 w-0.1167 (r=0.9967) 포배기 : 1/t=0.0055 w-0.0192 (r=0.9825) 담륜자기 : 1/t=0.0034 w-0.0155 (r=0.9907) D상 유생기 : 1/t=0.0014 w-0.0023 (r=0.9843) 상기 식에서 산출된 코끼리조개의 생물학적 기초수온은 3.82$^{\circ}C$였다. Develoment precess and characteristics of eggs of the geoduck clam, Panope japonica are reporting in this study. Eggs and sperm were excised from gonad, artificially fertilized in an aquarium, reared under various temperature regimes, and record and record the larval period and the time need to reach a certain larval stage from ferilization. Unfertilized eggs of P. japonica appeared to be oval with a mean diameter of $70\mu$m and they became spherical after fertilization. The eggs of P. japonica can be classified as demersal. At a constant water temperature of $ 11^{citc}C$, it took 4 hours form fertilization to become four-cell stage, two days to become trochophore larvae, three days to become D-shape larvae, twenty-three days to become umbo stage, and thirty-six days to become fully grown veliger ready form settlement. A negative correlation was observed between the water temperature and the larval period of P. japonica. From fertilization to D-shape larvae, it took five days at 8$^{\circ}C$, while it was only two days to become D-shape larvae at $ 17^{citc}C$. Time required to D-shape larvae from fertilization was proportional to temperature, and the relationships were expressed as follows : To 8-cell stage, 1/t=0.0209 w-0.1167 (r=0.9967) To blastula stage, 1/t=0, 0055 w-0.0192 (r=0.9825) To trochophore stage, 1/t=0.0034 w-0.0155 (r=0.9907) To D-shape larvae stage, 1/t=0.0014 w-0.0023 (r=0.9843) (t, time in hours ; w, water temperature) Bioligical minimum temperature for egg development was calculated as 3.82$^{\circ}C$ in average.

코끼리조개의 인공종묘생산에 관한 연구 I. 산란유발 및 부화

이채성,노섬,박영제,Lee, Chae-Sung,Rho, Sum,Park, Young-Je 한국양식학회 1997 韓國養殖學會誌 Vol.10 No.2

강원연안에 서식하는 코끼리조개의 인공종묘생산 기술개발을 목적으로 산란유발 방법 및 수정과 부화를 위한 수온과 염분농도의 최적조건 등을 연구한 결과를 요약하면 다음과 같다. 코끼리조개의 산란유발은 간출자극과 자외선조사해수자극에서는 전혀 반응이 없었다. 수온자극에서는 5월에 15.0-25.0%의 반응을 보였고, 6월에는 10.0%의 반응을 보였다. 그러나 생식소를 절개한 것은 15.0-45.0%로 가장 높은 반응을 보였다. NH 하(4) OH 용액을 해수에 첨가하는 자극에서는 8/1000N-10/1000N에서 15.0%의 반응율을, 그리고 NH 하(4) OH 용액을 생식소에 주사하는 자극은 5/100N-7/100N에서 5.0-10.0%의 반응율을 보였다. 코끼리조개의 수온에 따른 수정율은 수온 11-17$^{\circ}C$범위에서 74.2-89.2%였고, 부화율은 수온 8-$14^{\circ}C$에서 84.3-90.5%로 가장 높았다. 염분 농도에 의한 수정율은 염분 25-$35tetperthousand$범위에서 72.5-88.5%, 부화율은 염분 30-$35tetperthousand$에서 82.7-86.9%였다. 수정과 부화를 위한 수온과 염분농도의 최적조건은 수온 11-$14^{\circ}C$, 염분농도 30-$35tetperthousand$로 나타났다. In order to developed the techniques for artificial seedling production of geoduck clam, Panope japonica, various stimulution for spawning induction and hatching condition were studied. Spawning induction by the air day or UV-irradiation stimulus were not effective. Water temperature stimulus was responsed 15.0~25.0% in May and 10.0% in June. But spawning induction by the gonad incision was highest with 15.0~45.0%. Ammonium hydroxide (NH4OH) stimulus adding in seawater were responsed 15.0% at 8/1000N~10/1000N, and ammonium hyhroxide solution injected in the gonads were responsed 5.0~10.0% at 5/100N~7/100N. The highest fertilization and hatching rate at various water temperature were ranged 74.5~89.2% in 11~$17^{\circ}C, \;84.3~89.5%\;in\;8~14^{\circ}C$, respectively. the highest fertilization rate and hatching rate in various salinity were ranged 72.5~88.5% in 25~$35tetperthousand$, 82.7~86.9% in 30~$35tetperthousand$, respectively. The optimum water temperature and salinity for fertilization and hatching to the 11~14$^{\circ}C$ and 30~$35tetperthousand$, respectively.

강릉 안목의 형성과 변천 과정

이채성 ( Lee Chae Sung ) 강원대학교 강원문화연구소 2023 강원문화연구 Vol.47 No.-

Recently, Gangneung Anmok has a beach and a port, and it is a representative hot place as a famous coffee street. Anmok was originally called 'front neck (Apmok)'. Apmok is a wide field in the north of the mouth of Namdaecheon Stream and is called Jeonju, and it is said that the Japanese changed it to Anmok because it was difficult to pronounce it. In Anmok, there is an estuary where Namdaecheon Stream, the lifeline of Gangneung, flows and meets the sea. Namdaecheon Stream originally passed Gangmun Bridge and entered Gyeongho, then went out to the sea. However, in 1580, Gangmungyo Bridge was not used. Before that, the Namdaecheon Stream estuary was already formed in the current waterway, and the biggest change in the Namdaecheon Stream flow path in pre-modern times can be said to be that the estuary was moved from Gangmun to Anmok. In addition, Anmok Port was a stopover when operating between Busan and Wonsan. In 2010, a passenger ship between Gangneung and Ulleungdo was established, and in 2011, Gangneung Port was transformed into the most popular place on the east coast as the fishing port function was activated, allowing visitors to enjoy marine leisure such as marinas and coffee streets

북쪽말똥성게(Strongylocentrotus intermedius)의 난발생과 유생의 발달

이채성(Chae-Sung Lee),김완기(Wan-Ki Kim),김두호(Doo-Ho Kim),정세한(Se-Han Jeong),박기영(Kie-Young Park) 한국수산과학회 양식분과 2003 韓國養殖學會誌 Vol.16 No.2

코끼리조개의 인공종묘생산에 관한 연구 Ⅱ. 난발생과 유생의 발달

이채성(Chae Sung Lee),노섬(Sum Rho) 한국수산과학회 양식분과 1997 韓國養殖學會誌 Vol.10 No.1

횡형과 주형의 접합부에서 횡형단부의 경계조건에 관한 연구

이채성(Chae Sung Lee),김우기(Woo Gi Kim),이기범(Ki Bum Lee),윤순종(Soon Jong Yoon),윤종열(Chong Yul Yoon),이원복(Won Bok Lee) 한국강구조학회 1996 韓國鋼構造學會誌 Vol.8 No.2

In a beam-to-girder connection system, the boundary condition of the cross beam is assumed as a fixed support and the cross beam is welded to the web of a girder in practice. But, in general, the torsional rigidity of I-shape girder arid the out-of-plane bending rigidity of slender-web plate are small. Hence the interaction behavior between the cross beam and the girder must be considered in the connection design. In this paper, cross beam ends are assumed as a fixed support and the moment reduction effects, caused by the torsion of a main girder and the out-of-plane deformation of the web, are evaluated, respectively. Based on this practical example, it was found that the moment reduction is significant and therefore it is recommended to design the cross beam as a simply supported beam.

해삼, Stichopus japonicus 유생의 성장과 생존에 미치는 먹이 및 수용밀도의 영향

이채성(Chae Sung Lee),박영제(Young Je Park) 한국수산과학회 양식분과 1999 韓國養殖學會誌 Vol.12 No.1

코끼리조개, Panope japonica의 서식생태에 관한 연구

이채성(Chae Sung Lee),백국기(Kook Ki Baik),홍관의(Kwan Eui Hong) 한국수산과학회 양식분과 1998 韓國養殖學會誌 Vol.11 No.1