• 한국노년학
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• 제29권3호
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• pp.1087-1105
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• 2009

본 연구는 황혼이혼이 점차 증가하고 있는 현 시점에서 황혼이혼을 한 여성노인들의 이혼결정과 이혼 이후의 적응과정 및 내용을 살펴보고, 황혼이혼 여성 노인들의 구체적 삶에 대한 이해의 기반을 조성해 그들의 적응을 도울 수 있는 실천적 개입 프로그램 마련에 기여하고자 수행되었다. 연구는 질적 연구 방법론들 중 하나 인 생애사 연구로 접근했다. 연구에는 3명의 황혼이혼여성 노인들이 참여했고 일대일 심층면담을 통해 자료를 수집했다. 수집된 자료는 Denzin(1989)이 제시한 분석방법을 원용하여 범주적 내용분석을 했다. 연구결과에서는 참여자들의 이혼 전·후의 주요 생애주제와 이혼 이후의 삶 적응을 분석하여 공통의 주제를 발견했는데 그것은 '문화체계로 굳어진 가부장제'와 '편견과 억압속의 분절된 삶'이다. 이를 통해 본 연구에서는 황혼이혼 여성노인들을 위한 자조모임과 특화된 개입프로그램의 필요성을 제언하고자 하였다.

• 한국수학사학회지
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• 제12권1호
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• pp.45-52
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• 1999

This study is an analysis on the Arithmetic education curriculum of elementary school in Japan that will become effective from April 1, 2002. In new curriculum, loaming are highly reduced and mediated. This curriculum is characterized by the slow and interesting Arithmetic education focusing on creativity, student-based Arithmetic education, and real life-related Arithmetic education.

• 한국주거학회논문집
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• 제6권2호
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• pp.213-223
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• 1995

The purpose of this study is to investigate the housing behavior through the code's housing history. The data were collected by open descriptive answering of 28 students in Y.University. The major findings are as follows: The characteristics of code's housing history were changed by stages of family life. The greastes changes are in the stage of elementary school(3rd stage). Before the 3rd stage, living in out of town, detached house, rental house is to superior than town(Dae Gu). Apt.. own house. And housing adaptation is to superior than housing adjustment. After 3rd stage go by contraies.

• 한국수학사학회지
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• 제32권5호
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• pp.233-240
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• 2019

In the history of Chinese mathematics, Xu Guang-qi (徐光啓) is a person who translated and published Western mathematics in China and used it to reconstruct Chinese calendrical system. In this paper, we explored his thoughts on the background of his accomplishments and the circumstances under which such thoughts were made.

• 한국주거학회논문집
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• 제26권2호
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• pp.89-101
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• 2015

The purpose of this study is to explore the housing pathways of middle-class married women toward owning a first home. In doing so, an in-depth interview as a qualitative method was conducted, life history was utilized to track down the path to first-home owning, and all the interviews were transcribed for analysis. The research participants were well-educated middle-class full-time housewives owning a home. The findings indicated that family formation through marriage and child birth was a primary driving force to buy a home. It was shown that owning a home was perceived not just as a stepping stone for building both family wealth and social capital but as one of the most important pillars to reinforcing traditional family values. In spite of some intergenerational distinctions on the path toward home owning, commonalities across generations included that home owning was considered to be a social icon for middle-class, it became almost impossible for younger generations without parental support which stimulated the intergenerational transfer of wealth, and it was greatly determined by both family income (affordability) and home finance options(borrowing capacity). This research implies that the changing social landscape transforms the value on homeownership and could undermine the socioeconomic strengths of home owning. Nonetheless, it's of importance to strategically assist first homebuyers who are likely to be a member of middle-class.

• ALGAE
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• 제26권1호
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• pp.61-71
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• 2011

Thirty populations of Chondrus crispus Stackhouse from Nova Scotia were collected during the years 1993 to 2011. Taken from estuaries, wave exposed open coasts, high intertidal rock pools and shallow subtidal habitats, the populations were evaluated for relative abundance of tetrasporophytic and gametophytic life history phases. Over 2,800 thalli were characterized using the resorcinol-acetal test to distinguish the kappa- and lambda-carrageenan containing fronds of gametophytes and tetrasporophytes, respectively. These populations had $77{\pm}5%$ gametophytes (mean ${\pm}95%$ confidence interval), with most populations having gametophyte : sporophyte ratios ranging from 2 : 1 to 9 : 1. No population had a dominance of tetrasporophytes, although two populations had 1 : 1 ratios. A meta-analysis of our data along with previously published accounts showed no significant changes in gametophyte dominance with respect to hypothesized gradients of wave exposure, salinity, or water depth. Significant changes occurred in ratios at five sites where replicate sampling occurred in different years. We conclude that C. crispus in Maritime Canada has a natural ratio of 3 : 1 or greater in stable conditions, and that lower ratios represent recovery from disturbance in which bare substratum is created that is subsequently colonized by carpospores from remaining gametophytic thalli.

• Fisheries and Aquatic Sciences
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• 제1권1호
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• pp.147-151
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• 1998

The reproductive phenology of Gracilaria verrucosa was studied in Cheongsapo near Pusan, Korea. Among the life history phases, tetrasporic plants occurred dominantly in varying degrees of abundance throughout the year except from July to September. Cystocarpic plants increased rapidly during summer, and then recorded maximum abundance in July. Whereas, seasonal peaks of spermatangial plants were observed in April and September. However, they were less than cystocarpic plants in abundance. Vegetative plants dominated from December to May for long period, with a occurrence peak in February. Even though fertile plants in both gametophytes and tetrasporophytes occurred throughout the year, their seasonal abundance suggests that the positive correlation between reproduction and water temperature is basically found in the reproductive pattern of Gracilaria verrucosa. The distributional aspect of life history phases appears to be related with differences of their longevity, fecundity or survivorship.

• 건축역사연구
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• 제11권1호
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• pp.65-84
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• 2002

This study has main purpose to understand and interpret the house Nok-U-dang, an upper class built in Chosun dynasty, not by outsider researcher's view but insider dweller's view. To interpret correctly, dweller's everyday life in the space and form is examined on a microscale beyond the physical space and form of the house, main object of architectural history To understand the present form exactly, the study restore traditional life in past era, 1940s. Main method of restoration is the ethnographic interview, based on cultural anthropology. Like any other upper-class house, the house has been influenced under ruling Confucian ideology in Chosun dynasty: separation of man's and woman's quarters and hierachical arrangement by generation, and worshipping ceremony for ancestor. However, it is by practical management for agricultural production that every court and building of the Noku-Dang can be explained correctly; preparing seed for sowing, tool storing, preparing and serving meal for laborers, making manure, harvesting, threshing grain, storing grain and so on. Precedent studies interpreted the house by the Confucian principle too much and made conclusion of dignity and austerity of ritual: woman's quarter, is closed and serene space. However this study shows that the space is semi-opened and composite space by agricultural works. And the Sarangchae, master's quarter, is located properly at visual center to control every agricultural activity.

• 대한기계학회논문집A
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• 제20권5호
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• pp.1392-1400
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• 1996

The need of companies shorten the design-to-manufacturing process for new products with improved quality in cost effective manner places increasing demends on engineers to simulate the performance characteristics of a design before it is built of a prototype is developed. For theses demands CAE(Computer-Aided Engineering) offers engineers not only giving confidence of their design but also eliminating potential errors due totesting prototypes in small numbers. This paper present the method to predict the fatigue life using dynamics simulation and FEA(Finite Element Analysis) for construciton equipment in the computer before building prototype. The dynamicsimulatio is to get the load-time history corresponding to the maneuvering and driving of the construction equipment. The FEA is to build a model of the structure and then analyse to define the local stress response to applied loadings using linear static analysis.

• ALGAE
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• 제32권3호
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• pp.223-233
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• 2017

Kelp forests and the many vital ecosystem services they provide are threatened as the severity of climate change and other anthropogenic stressors continues to mount. Particularly in the North Pacific, sea surface temperature is warming and glacial melt is decreasing salinity. This study explored the resiliency of early life-history stages of these foundation species through a factorial laboratory experiment. The effects of rising sea surface temperature under low salinity conditions on kelp spore settlement and initial gametophyte growth in Eualaria fistulosa, Nereocystis luetkeana, and Saccharina latissima were investigated. Decreased settlement and growth were observed in these species at elevated temperatures and at low salinity. Eualaria fistulosa spores and gametophytes were the most negatively impacted, compared to the more widely distributed N. luetkeana and S. latissima. These results suggest that N. luetkeana and S. latissima could potentially outperform E. fistulosa under projected conditions. However, despite decreased performance among all species, our findings indicate that these species are largely resilient to temperature changes when exposed to a low salinity, even when the temperature changes are immediate and extreme. By exploring how early life-history stages of several key kelp species are impacted by dual stressors, this research enhances our understanding of how kelp forests will respond to projected and extreme changes in temperature when already stressed by low salinity.