• KSII Transactions on Internet and Information Systems (TIIS)
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• v.7 no.5
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• pp.949-966
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• 2013

Recently, Wireless Body Area Network (WBAN) has promise to revolutionize human daily life. The need for multiple sensors and constant monitoring lead these systems to be energy hungry and expensive with short operating lifetimes. In this paper, we offer a review of existing work of WBAN and focus on energy-aware management in it. We emphasize that nodes computation, wireless communication, topology deployment and energy scavenging are main domains for making a long-lived WBAN. We study the popular power management technique Dynamic Voltage and Frequency Scaling (DVFS) and identify the impact of slack time in Dynamic Power Management (DPM), and finally propose an enhanced dynamic power management method to schedule scaled jobs at slack time with the goal of saving energy and keeping system reliability. Theoretical and experimental evaluations exhibit the effectiveness and efficiency of the proposed method.

• KIEAE Journal
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• v.8 no.6
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• pp.27-38
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• 2008

Sunlighting offers the high quality of life and has potential to improve environment, economy and human comfort. Especially mirror sunlighting system has competitive power in price, saving energy and solving problems of sunshine lack. This study aims to analyze the adequate applications of mirror type sunlighting systems available in Korea to enhance the living environment. For the purpose, contemporary applications were analyzed by spatial characteristics, size and usage in Germany, Switzerland, Australia, Japan and Korea. As the results, they are being applied for the place with lack of sunshine in housings. For culture complex, they are usually applied for atrium. Nowadays, application of complex systems is increasing to solve sunshine lack and make uniform illuminance. Therefore both aesthetic and technical consideration is needed to apply the advanced mirror sunlighting systems in various spaces.

• Journal of The Korean Association For Science Education
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• v.15 no.2
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• pp.158-163
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• 1995

The 40th Annual Southern Arizona Regional Science and Engineering Fair was analyzed in terms of contents of exhibits and research methods. Elementary school students like to choose first, biology; secondly. physics; thirdly, chemistry; fourthly. consumer science; fifthly, S.T.S; sixthly. earth science area topics. Chemistry area topics are 20 %, which are much more than rates appeared in American elementary science textbooks. Elementary school students like topics such as pollutions, energy saving materials and characteristics/selection of products required in every-day life. In the most preferential area, biology, students do experiments or survey about plants growth, microbiology, learning/behavior of animals, health/exercise, which are reconcile with the analysis of American elementary science contents.

• Journal of Families and Better Life
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• v.20 no.2
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• pp.21-28
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• 2002

The purpose of this study was to investigate how the financial satisfaction of housewives was related with the financial condition of households and the performance evaluation of household financial management behavior. In order to examine this relationship, internet questionnaire survey was conducted with 598 housewives. Results showed that household income and monthly debt repayment had only indirect effects on the financial satisfaction while monthly saving had both of the direct and indirect effects. It indicates that financial satisfaction level varies with the perceived performance of financial management behavior even though they have the same level of financial resources. Specifically, the division of financial roles and problem solving style between husband and wife affected the financial satisfaction of housewives.

• Journal of Families and Better Life
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• v.18 no.2
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• pp.175-190
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• 2000

The purpose of this study is to investigate variables affecting on rationality of consumption behavior of adolescent consumers. The findings from data analysis can be summarized as follows: 1) The degree of the rationality of whole consumption behavior, buying behavior, using behavior and disposing behavior is not so high. Especially the degree of making a buying plan before they buy gathering information according to buying plan and applying gathered information is low but presenting a claim for inferior goods is high. Adolescent consumers don't tend to use products to the end and to exchange or donate disusing products. 2) According to the result of multiple regression analysis, sex, grade, application of advertisement, influence of parents, saving value, conspicuous value, pro-environmental value, aesthetic value, enjoyable value are variables affecting on the rationality of consumption behavior of adolescent consumers.

• Journal of Families and Better Life
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• v.26 no.6
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• pp.143-158
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• 2008

The purpose of the study was to investigate the wife and husband role division in household financial management between dual-income household and single-income household. Household financial management included the following five categories: financial planning, consumption/expenditure management, savings/investment management, risk management and credit management. Data for this research was collected through 610 married women living in Seoul, Korea. Using SAS-PC program, Chi-square and t-test Analyses were executed. The results showed that dual- and single-income households tend to have different perspectives on marital role division in household management. Wives of dual-income households had more significant roles in financial management rather than wives of single income households. Especially, wives of dual-income managed more active credit management and saving/investment management. On the other hand, wives of single-income households played a major role in making decision over cheap items than that of wives of dual-income household.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.2142-2143
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• 2011

Amphibious possible, and good fuel economy, so as leisure and transport has increased the use of hovercraft. Fire started in Korea, the prevalence is increasing in demand as the trend has been increasing steadily. In this paper, the hovercraft's forward and backward direction can be controlled in order to free the reverse bucket control system was developed. Control due to development by promoting the flow of air and turn right, turn left and easy to reverse the life-saving and stable at high speed, etc. has made possible the operation of hovercraft. To prove the validity of the proposed controller in Matlab simulation and the actual delivery at the firehouse, built into a model for the demonstration test was performed.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2001.11a
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• pp.31-34
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• 2001

Changing to a 24-hour urbanistic life style, a night time activities constituted for a major portion. Important of a beautiful exterior lighting as well as safety, and security concerns become increasingly. However, the removal or control of the excessive lighting is considered more important then increasing the brightness of the lamps to achieve bother safety and security. Representing a cheerful and leisure environment from the exterior lighting can also harmonize two aspects of energy saving and sustaining green environment. Designing of exterior lighting at the ＯＯ Agricultural & Fishery Circulation center symbolizes the suitability, convenience and production. It's design and analysis represent the optimum urban night time environment.

• Journal of Trauma and Injury
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• v.32 no.4
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• pp.252-257
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• 2019

Hyperbaric oxygen therapy (HBOT) is used to treat carbon monoxide (CO) poisoning. However, untreated pneumothorax is an absolute contraindication for HBOT. More caution is needed with regard to monoplace hyperbaric chambers, as patient monitoring and life-saving procedures are impossible inside these chambers. Central catheterization is frequently used for various conditions, but unnecessary catheterization must be avoided because of the risk of infection and mechanical complications. Herein, we describe a case of CO poisoning in which iatrogenic pneumothorax developed after unnecessary subclavian central catheterization. The patient did not need to be catheterized, and HBOT could not be performed because of the pneumothorax. Hence, this case reminds us of basic-but nonetheless important-principles of catheterization.

• Journal of Chest Surgery
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• v.15 no.1
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• pp.73-76
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• 1982

For the treatment of acute respiratory failure and emergency care of an urgent patient, tracheostomy in itself may have been a life saving procedure. But, among the variable complications following tracheostomy, the tracheal stenosis gives serious clinical manifestation which can only be corrected by surgical intervention in many occasions. At the Dept. of thoracic surgery, CAFGH, we have experienced one case of tracheal stenosis following tracheostomy for assisted ventilation. Tracheogram showed a 2.5 cm segmental narrowing 5 cm below the tracheostoma. Before recon-struction, we tried to dilate the stenotic segment for about 2 months, but the result was not satisfactory to relieve dyspnea. So, we resected the narrowed segment and tracheal reconstruction was performed with an excellent result in postoperative periods till now.