• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.3
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• pp.1296-1301
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• 2012

This paper deals with development of the driving-will control system in power-assisted electric wheelchair. Nowadays, population of elderly people has been increased rapidly, and also an electric wheelchair has been considered as the device for the elderly. Especially, power-assisted electric wheelchair can overcome problems that a conventional electric wheelchair holds, such as lack of movement of wheelchair user. In this paper, we propose the sensors system to measure the driving-will force and perform the control action for a power-assisted electric wheelchair. And motion performance of the proposed system is verified through the experiment.

• Proceedings of the KSRS Conference
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• v.2
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• pp.732-735
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• 2006

Downtown cities in Japan are facing sharp fall in customers and continued shut down of shops due to decrease of population, increase in family cars and flowing of customers into the suburban large-scale retail stores. Omura City in Nagasaki Prefecture, Japan is no exception to this. For the revitalization of the downtown, many actions have been taken to open the vacant shops. However, transportation problem is the most important one to be solved for the citizens including the elderly people having difficulty in movement. Accordingly, this study was aimed at the revitalization of the downtown by substantiality public transportation. We have attempted to develop routes from the view-point of convenience by using Analytic Hierarchy Process (AHP) and Geographic Information Systems (GIS). As a result of the study, we were able to select three bus transportation areas by incorporating qualitative factors into the analysis. Finally, the study concluded that, revitalization activities of the downtown city itself is required in addition to re-structuring of bus transportation system for the revitalization of the downtown city.

• Korean Journal of Remote Sensing
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• v.33 no.1
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• pp.97-109
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• 2017

Green tides that developed along the coast of China in 2015 were detected and tracked using vegetation indices from GOCI and Landsat images. Green tides first appeared near the Jiangsu Province on May 14 before increasing in size and number and moving northward to the Shandong Peninsula in mid-June. Typhoon Cham-hom passed through the Yellow Sea on July 12, significantly decreasing the algal population. An algae patch moved east toward Korea and on June 18 and July 4, several masses were found between the southwestern shores of Korea and Jeju Island. The floating masses found in Korean waters were concentrated at the boundary of the open sea and the Jindo cold pool, a phenomenon also observed at the boundary of coastal and offshore waters in China. Sea surface temperatures, derived from NOAA SST data, were found to play a role in generation of the green tides.

• Journal of architectural history
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• v.29 no.5
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• pp.41-50
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• 2020

Architecture is the historical record of a society. Residential culture is one of the cultures, and includes all the living and customs of people living in the current society. In particular, the Native residence has the research value of changing the living culture because it contains the lives of farmers. The residential culture of the Korean-chinese people contains the poor, agricultural, and immigrant life that began as a livelihood. Therefore, residential culture is an important part of the Korean-chinese culture. However, due to population movement and urbanization, the deepening and aging of the rural community caused the destruction of the residential culture, and the residentials that had been vacant for many years were destroyed, and a large number of risky residential reconstructions are underway. At the point of progress from a voluntary personal building culture to a public building culture built by the government, a study on Renovation of dilapidated Building and a more reasonable residential reform plan is needed. Our housing culture should not only improve the living environment of current life, but also inherit the housing culture contained in history.

• Journal of the Korean Institute of Rural Architecture
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• v.16 no.2
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• pp.55-63
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• 2014

Cities of China have been expanding rapidly during the last 10 years and the living environment of urban population developed highly making little difference with the developed nations. However, in the case of rural area, situation is totally different from the urban area. There are some cases where the quality of life in rural areas is retreating compared to the past. Agrarian cultures of the past are remained in the rural area with only older generations and no younger generations. The difference between the rural and the urban and the movement to the cities are increasing in a rapid speed. This led to the recognition of potential danger that lies on the agricultural societies which can demolish the economic development's sustainability. Therefore, in this study, basic information about the current Chinese elderly's house circumstances and to build new houses suited for the older generations will be provided. This can not only enhance the quality of the elder citizen's life, but also can be a meaningful research for the ideal construction of future Chinese agriculture.

• Journal of the Korea Fashion and Costume Design Association
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• v.9 no.1
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• pp.203-219
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• 2007

The education chance and job opportunity of women have increased in the 19th century. Also, women tried to get the right and chance equal to men in this period. Therefore, the population of women participating in the sports have increased. And comfortable and practical pantaloons which men have been wearing were suggested to women. This study investigated the characteristics and change of women's sports wear relating to social change in the 19th century. The results of this study were as follows: 1. According to the social change, women participated in the sports activities with the opportunity equal to men, and the appropriate women's sports wear was needed. 2. Pantaloons which were suggested as the clothing reform movement became popular with the development of sports wear. 3. Simple, effective, comfortable and easy style sports wear was preferred. 4. Women accepted men's sports wear positively. 5. The women's sports wear varied according to the various kinds of sports. 6. The healthful design was preferred and harmful design was excluded. 7. Underwear was improved functionally and simplified. 8. The main materials were flannel, wool, tweed, homespun and serge, and the mail colors were brown, dark blue, gray and black.

• Journal of Life Science
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• v.9 no.6
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• pp.646-652
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• 1999

The effect of temperature on the structure change of the SH of myosin head have been investigated with improved resolution by x-ray diffraction using synchrotron radiation. The movement of myosin head and conformational change of contractile molecules were occurred in the muscle contraction. IASL (iodo acetamide) and MSL (maleimide) disordered the orderly helix arrangement of myosin in the rest state of spin level. The temperature effect on the structure change was great at the UL in the equatorial reflection. But those of IASL and MSL were minor. Equatorial reflection (10, 11) change inferred that myosin head was moved to the vicinity of actin filament by temperature change (from $25^{\circ}C$ to $0^{\circ}C$) at UL, but spin level was not changed. The intensity change of 143 $\AA$ and 72 $\AA$ could offer information of the mass profection of population of myosin heads along the filament axis. The slope of intensity profile of the mass profection of 143$\AA$ and reflection of MSL is appeared sharply and those of UL and IASL were not changed. The decrease of MSL actin reflection at 51 $\AA$ and 59 $\AA$ in the actin reflection change refers that the shifted myosin head binds a certain actin or changes an actin structure. From these results, we could conclude that IASL and MSL were spin labeled on SH of myosin head and disordered the helix arrangement of actin.

• Korean Journal of Applied Biomechanics
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• v.28 no.3
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• pp.193-197
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• 2018

Objective: The relationship between the rest intervals during physical tasks and performance enhancement has been studied. However, whether or not different rest intervals would result in altered multiplanar ankle kinematics during performance of the Star Excursion Balance Test (SEBT) is unknown. Method: Fifteen healthy subjects (7 males and 8 females) without a history of ankle injuries were participated in this study. 3 rest intervals of 10, 20, and 40 seconds were used during the current study. Three visits were required in order to complete the 3 rest intervals. Variables of interest included dorsiflexion (DF) excursion, tibial internal rotation (TIR), and eversion (EV) excursions. The means of ankle angular excursions were compared across the 3 directions in the 3 rest interval groups. Results: There were no significant main effects for any variables between restintervals. However, DF excursion in the anteromedial (AM) direction was greaterthan in both the medial (M) and posteromedial (PM) directions and was greater in the M direction compared to the PM direction. TIR excursion in the AM direction was less than in both the M and PM directions. Conclusion: Different rest intervals ranging from 10 to 40 seconds did not influence ankle angular excursions during the SEBT in a healthy population. However, our results suggest that multiplanar motion is necessary during the SEBT and differs depending on the direction of movement.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2004.09a
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• pp.186-190
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• 2004

The electrokinetic bioremediation employing electrolyte circulation method was carried out for the cleanup of phenanthrene-contaminated kaolinite, and microorganism used in the biodegradation of phenanthrene was Sphingomonas sp. 3Y. The electrolyte circulation method supplied ionic nutrientsand the microorganism into soil, and inhibited the significant pH change of soil by increasing the soil buffering capacity by providing phosphate buffer compounds. When the remediation process was conducted without surfactant, the removal efficiency of phenanthrene, at the initial concentration of 200 ppm, was 69% for only 7 days. Higher microbial population and lower phenanthrene concentration were observed in the anode and middle regions of soil specimen than in the cathode region. The higher density of microorganism was because the microbial movement was in the direction of the anode part due to the negative surface charge. When Triton X-100 and APG of 20 g/1 were used to improve the bioavailability of phenanthrene strongly adsorbed onto soil surface, about 90 and 39% of phenanthrene removal were obtained. Consequently, it was confirmed that the microorganism preferred APC to phenanthrene as carbon source and so the removal efficiency with APG decreased less than that without APG.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.20 no.4
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• pp.333-344
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• 2013

Purpose: The purpose of this study was to investigate prevalence and factors influencing constipation in school age children in order to help prevent and manage this problem. Methods: The participants were 618 elementary school students (4th, 5th, and 6th grade) selected from five elementary schools. Data were gathered using questionnaires and analyzed using $x^2$ test, independent t-test and binary logistic regression with the PASW 18.0 program. Results: The prevalence of constipation was 15.2% for these school age children. Factors influencing constipation in this population were high stress (OR: 5.77), daily intake of meat (OR: 5.42), more than 3 hours using the internet (OR: 4.50), more than 3 hours of private academy classes (OR: 2.83), obesity (OR: 2.34), and negative perceptions of school toilet environment (OR: 2.26). Conclusion: Psychological factors and physical activities have an important effect on constipation in school age children. Thus, there is a need to educate both children and their parents on prevention of constipation by decreasing stress, decreasing meat intake, increasing active movement and increasing positive perception of school toilet environment.