• Proceedings of the KSRS Conference
• /
• 2003.11a
• /
• pp.978-980
• /
• 2003

This study explores the temporal and spatial features near 67years (1934 ?2001) and landcover change in last 14 years (1987-2001) in Shijiazhuang, China, based on 67-year time series data edited from historical maps, TM and ETM+ imageries by integrating GIS and remote sensing method. An index named Annual Growth Rate (AGR) is used to analyze the spatial features of urban sprawl, and Maximum Likelihood classification method is utilized to detect the land cover types change. At last, the relationship between urbanization and factors is analyzed.

• Current Research on Agriculture and Life Sciences
• /
• v.30 no.2
• /
• pp.97-104
• /
• 2012

Over the last century, drainage systems have become an integral component of agriculture. Climate observations and experiments using General circulation models suggest an intensification of the hydrologic cycle due to climate change. This study presents hydrologic simulations assessing the potential impact of climate change on subsurface drainage in Daegu, Republic of Korea. Historical and Long Ashton Research Station weather generator perturbed future climate data from 15 general circulation models for a field in Daegu were ran into a water management simulation model, DRAINMOD. The trends and variability in rainfall and Soil Excess Water ($SEW_{30}$) were assessed from 1960 to 2100. Rainfall amount and intensity were predicted to increase in the future. The predicted annual subsurface drainage flow varied from -35 to 40 % of the baseline value while the $SEW_{30}$ varied from -50 to 100%. The expected increases in subsurface drainage outflow require that more attention be given to soil and water conservation practices.

• Korean Journal of Social Welfare Studies
• /
• v.41 no.3
• /
• pp.349-378
• /
• 2010

The Life-Course perspective is a theoretical orientation that views the life-course as the age structure embedded in social institutions and history and understands the life-course of individual and group in the contextual perspective. The life-course perspective studies were developed in Germany and North America. They study social and historical effects and the effect of institutions and the state on the life-course, the pathway of the work career and differences of labour outcomes, and the inequality that is developed in the life-course. In Korea, the life-course perspective studies were tried in various fields and cumulated. However, it didn't established as a theoretical orientation. For applying the life-course perspective to connect the individual life-course with social and historical event, I describe the historical location of individuals born between 1930 and 1979 and analyse the change of their transitions to adulthood exploratorily. On results, the extension of education made the structural change of their life-course, and in young cohort the timing of leaving school, entering workforce, marriage and childbirth was delayed and transitions were made in narrower spread. It means the standardization of the life-course as appears in modern society. The 1970s birth cohort has the differenciated life-course pattern, however I cannot verify that change because of the right censoring.

• Journal of Korea Water Resources Association
• /
• v.54 no.2
• /
• pp.93-104
• /
• 2021

Due to climate change the sustainable water resources management of agricultural reservoirs, the largest number of reservoirs in Korea, has become important. However, the DIROM, rainfall-runoff model for calculating agricultural reservoir inflow, has used regression equation developed in the 1980s. This study has optimized the parameters of the DIROM using the genetic algorithm (GA) based on historical inflow data for some agricultural reservoirs that recently begun to observe inflow data. The result showed that the error between the historical inflow and simulated inflow using the optimal parameters was decreased by about 80% compared with the annual inflow with the existing parameters. The correlation coefficient and root mean square error with the historical inflow increased to 0.64 and decreased to 28.2 × 103 ㎥, respectively. As a result, if the DIROM uses the optimal parameters based on the historical inflow of agricultural reservoirs, it will be possible to calculate the long-term reservoir inflow with high accuracy. This study will contribute to future research using the historical inflow of agricultural reservoirs and improvement of the rainfall-runoff model parameters. Furthermore, the reliable long-term inflow data will support for sustainable reservoir management and agricultural water supply.

• International Journal of Contents
• /
• v.11 no.1
• /
• pp.21-30
• /
• 2015

A simulated realistic virtual environment is inhabited by autonomous cyber-humans who play the roles of agents in events. A key element, which enables this realism, is the historical context formed by time and space. A knowledge-representation scheme, composed of both spatial and temporal aspects needed by the agent to respond to dynamically changing situations, is essential for the design of a realistic virtual agent. In this work, spatial and temporal aspects of dynamic situations in the virtual environment have been formalized as a key component of our knowledge-representation scheme. This scheme provides a mathematical framework to construct realistic virtual situations that change with time, and background knowledge for agents in the simulated environment to deduce new pieces of information and plan against changing situations.

• Journal of The Korean Association For Science Education
• /
• v.5 no.2
• /
• pp.139-145
• /
• 1985

This study was undertaken to analyze the research trends on science education in Korea. In this study the analysis for of trends of researches on science education, nine areas such as historical change of science Education, Processes of science learning science curriculum, science instruction, teaching-learning materials and equipment for science education, valuation on science education, survey on Korean science education, policy and management of science education, and natural science, were chosen for the analysir. All science education. thesis and dissertations in Korea, papers of science education published by the science center of the Seoul National University and the papers of the Journal of the Korean Association of Res Search in science Education were analyzed. The findings of this study are as follows: 1. Seventy percentile of science educational thesis and dissertations are on natural science areas. 2. About 14% of all papers being sampled is in science curriculum research category. There are few research studies on historical changes of science education, and teaching-learning materials and equipments for science education.

• Journal of architectural history
• /
• v.27 no.1
• /
• pp.29-42
• /
• 2018

Mugiyeondang(舞沂蓮塘) is the garden that the provincial noble family in Yeongnam(嶺南) has constructed since the late Joseon period. Mugiyeondang is well known as a typical case of traditional garden in Joseon period. But it is also an exceptional case because of its informal layout that infers gradual space transition. This study aims to establish the historical story of the garden beyond the superficial description about existing spatial status and literature materials. Mugiyeondang had been constructed by seven generations of the family during two hundred years, and there were significant events at every transition points. The figure and name of elements reflects each historical change of the family. Mugiyeondang is an important case to notice that a garden was not just a subsidiary space for mere leisure life of the gentry of Joseon period, But it was an important for some families as their representative and symbolic space.

• Proceedings of the Korea Contents Association Conference
• /
• 2005.11a
• /
• pp.75-80
• /
• 2005

The purpose of this research is to verify what factors change a cultural heritage into a tourist product. And how to create tourist products through Korean world cultural heritage items in a way it contributes to the Korean tourism industry. To develope this theory of tourism product resources development we should organize a competitive strategy with concerted efforts to develop and maintain the cultural image of the historical site and devote great efforts for the preservation, development and creation of its own unique historical tradition and culture.

• Journal of the Korea Safety Management & Science
• /
• v.14 no.2
• /
• pp.253-263
• /
• 2012

Although the national technical qualification scheme has a historical background for thirty-five years, it hasn't any study of an obvious cause analysis, effective counterplan and analysis relation to its historical changes. This paper analyses the internal and external factors of technical qualification policy of the Human resources development service of Korea using PEST and SWOT and surveys the influence on its environment and the variation cause of the ratio of successful applicants to the qualification scheme. This paper also suggests systematically the direction for development of the technical qualification scheme using FMEA. Thus, this study assists to construct rapidly a correspondence system to the environment change simultaneously to determine decision making to the marketing policy.

• Journal of the Korea Furniture Society
• /
• v.23 no.4
• /
• pp.440-448
• /
• 2012

The historical consciousness of furniture is one of the crucial elements that become the medium for initiating design. Also, it is an important task of the science to figure out the headstream of furniture being used these days. From this purpose, this study intends to understand the bureau that has not been studied much in terms of the headstream and changes based on historical facts centering around England, France, or America regarding the forms or terms. These points are expected to be used as the foundational research data to develop the science and products.