• The Transactions of The Korean Institute of Electrical Engineers
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• 제60권8호
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• pp.1606-1616
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• 2011

The blood pressure measuring equipment, which is being supplied and used most widely by being recognized convenience and accuracy now generally, is oscillometric blood pressure monitor. However, a change in blood pressure is basically influenced by diverse elements such as each individual's physiological status and physical condition. Thus, the measurement of blood pressure, which used single element called oscillation in blood pressure of being conveyed to cuff, is not considered on physiological elements such as cardiovascular system status and blood vessel stiffness index, and on external elements, thereby being quite in error. Accordingly, this study detected diverse bio-signals and body informations in each individual as the measurement subject such as ECG, PPG, and Korotkoff Sound in order to enhance convenience and accuracy of measuring blood pressure in the complex measurement equipment, thereby having extracted regression method for compensation in error of oscillometric blood pressure measurement on the wrist, and having improved accuracy of measuring blood pressure. To verify a method of improving accuracy, the blood pressure value in each of SBP, DBP, MAP was acquired through 4-stage experimental procedure targeting totally 51 subjects. Prior to experiment, the subjects were divided into two groups such as the experimental group for extracting regression method and the control group for verifying regression method. Its error was analyzed by comparing the reference blood pressure value, which was obtained through the auscultatory method, and the oscillometric blood pressure value on the wrist. To reduce the detected error, the blood pressure compensation regression method was calculated through multiple linear regression analysis on elements of blood pressure, individual body information, PTT, HR, K-Sound PSD change. Verification was carried out on improving significance and accuracy by applying the regression method to the data of control group. In the experimental results, as a result of confirming error on the reference blood pressure value in SBP, DBP, and MAP, which were acquired through applying regression method, the results of $-0.47{\pm}7.45$ mmHg, $-0.23{\pm}7.13$ mmHg, $0.06{\pm}6.39$ mmHg could be obtained. This is not only the numerical value of satisfying the sphygmomanometer reference of AAMI, but also shows the lower result than the numerical value in SBP : $-2.5{\pm}12.2$ mmHg, DBP : $-7.5{\pm}8.4$ mmHg, which is the mean error in the experimental results of Brram's research for verifying accuracy of Omron RX-M, which shows relatively high accuracy among wrist sphygmomanometers. Thus, the blood pressure compensation could be confirmed to be made within significant level.

• Therapeutic Science for Rehabilitation
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• 제7권1호
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• pp.51-62
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• 2018

Objective : This study was to verify the effects of occupation-based training with errorless learning and spaced retrieval on task learning and satisfaction of elderly with mild vascular dementia. Methods : The subjects of this study were 3 geriatric individuals with mild vascular dementia, ABA' + follow-up design was used. Intervention period was provided occupation-based training with errorless learning and spaced retrieval. The dependent variable was converted to ability of task performance every session and satisfaction before and after intervention. Result analysis was suggested through visual analysis and bar graph. Results : After the occupation-based training with errorless learning and spaced retrieval, Ability of task performance and satisfaction improved for all subjects. Conclusions : From this study, occupation-based training with errorless learning and spaced retrieval training was found to be an effective mediation for improving independence of task and satisfaction for people with mild dementia. This study could provide evidence for clinical application for occupation-based training.

• Journal of Digital Convergence
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• 제11권4호
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• pp.383-389
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• 2013

The purpose of this study was to investigate evidence-based practice (EBP) for sensory integration (SI) intervention in children with cerebral palsy (CP) through a systematic review and meta analysis. The screening strategy was performed to select studies for analysis after that, a meta-analysis was implemented for calculating the effect size (ES) in group studies. Twenty-four studies were included for a systematic review and included seven case reports, three single-subject designs, and fourteen group experimental design studies(three randomized controlled trials, three two groups nonrandomized studies, and six one group nonrandomized studies). The ES of the experimental group studies was moderate size of 0.272. The results of the ES according to the dependent variables, the ES was the largest in the fine motor development. The effect size of the published papers was greater than the unpublished paper's and two groups nonrandomized studies' size effect was the largest in the design. The ES of the infants was larger than the children. The ES for a period of 8 weeks, the number of five times a week, and time in 90 minutes showed the biggest in SI program. Although the ES of SI intervention in children with CP showed moderate effect, accumulation of research well be needed.

• KSCE Journal of Civil and Environmental Engineering Research
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• 제12권2호
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• pp.43-54
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• 1992

For shallow arches with large dynamic loading, linear analysis is no longer considered as practical and accurate. In this study, a method is presented for the dynamic analysis of shallow arches in which geometric nonlinearity must be considered. A program is developed for the analysis of the nonlinear dynamic behavior and for evaluation of critical buckling loads of shallow arches. Geometric nonlinearity is modeled using Lagrangian description of the motion. The finite element analysis procedure is used to solve the dynamic equation of motion and Newmark method is adopted in the approximation of time integration. A shallow arch subject to radial step loads is analyzed. The results are compared with those from other researches to verify the developed program. The behavior of arches is analyzed using the non-dimensional time, load, and shape parameters. It is shown that geometric nonlinearity should be considered in the analysis of shallow arches and probability of buckling failure is getting higher as arches are getting shallower. It is confirmed that arches with the same shape parameter have the same deflection ratio at the same time parameter when arches are loaded with the same parametric load. In addition, it is proved that buckling of arches with the same shape parameter occurs at the same load parameter. Circular arches, which are under a single or uniform normal load, are analyzed for comparison. A parabolic arch with radial step load is also analyzed. It is verified that the developed program is applicable for those problems.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제18권10호
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• pp.634-641
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• 2017

This case study investigated the effects of sensory integration therapy on social behaviors and feeding of children with intellectual disabilities who lack sensory processing abilities. The study was conducted done from September to December, 2016, and an ABA(two sessions, nine sessions, two sessions/total 13 sessions) design was used among Single Subject Research Design. Nine sessions of sensory integration program were conducted for 50 minutes each, and Wilbarger's Protocol was employed 2-3 times per day. To understand children's basic development levels, observation evaluation of each area and social maturity scale were conducted in the early stage. To Understand the children's sensory processes ability, a Sensory Profile(SP) was developed, while the activities of daily living and task performance ability scale were evaluated using the Functional Independence Measure for children(WeeFIM) and Canadian Occupational Performance Measure(COPM), respectively. Search behavior and feeding, which are social behaviors of children, were evaluated through observation. The results showed that the sensory integration program improves social behaviors of children and enables them to eat. The children's feeding was stable from the 5th session after the intervention, and the search behaviors started to change from 3 weeks after the intervention and became stable after 7 weeks. These results indicate that the sensory integration program is effective in mediating difficulties that children with intellectual disabilities who lack sensory processing ability experience in daily living.

• Journal of the Korean School Mathematics Society
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• 제16권4호
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• pp.745-770
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• 2013

In the knowledge-based society today, most knowledge is the integrated one which is difficult to be classified into subjects rather than the knowledge of a single subject. Thus, integrated thinking, which integrated knowledge is preferentially acquired first and then can be also associated with imagination and artistic sensitivity, is simultaneously required in order that we have a problem-solving capability in our daily life. STEAM education(science, technology, engineering, arts and mathematics) is one of the educational methods to improve this problem-solving capability as well as integrated thinking. This research developed materials for STEAM education which can be applied to the 6th grade curriculum of elementary school mathematics, then input it, and analyzed how it impacts with students' attitudes toward mathematics. Unit 3 'Prism' and Pyramid' were restructured and replaced by classes such as 'Spaghetti Project' or 'Paper Craft'. Unit 4 'Several Solid Figure' was taught as a class of 'EDUCUBE'. Unit 6 'Proportional Graph' was taught as a class of 'Creating my own bracelet'. After having this class, we found that mathematics class applied STEAM also has a positive effect on the mathematical attitude of students. Many students said that math is fun and gets more interesting after having math class applied STEAM and we come to know that they have positive awareness of mathematics.

• Journal of Life Science
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• 제22권10호
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• pp.1428-1433
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• 2012

Longevity is an exciting but difficult subject to study because it is determined by complex processes that require the coordinated action of several genetic factors as well as physiological and environmental influences. Genetic approaches have been applied to animal models to identify the molecular mechanism responsible for longevity. Several experimental model organisms obtained over the last decades suggest that the complete deletion of a single gene by gene targeting has proven to be an invaluable tool for the discovery of the mechanisms underlying longevity. The first discovery of long-lived mutants came from Caenorhabditis elegans research, which identified the insulin/IGF-1 pathway as responsible for longevity in this worm. IGF-1 is a multifunctional polypeptide that has sequence similarity to insulin and is involved in normal growth and development of cells. Several factors in the IGF-1 system have since been studied by gene targeting in the control of longevity in lower species, including nematode and fruit fly. In addition, significant progress has been made using mice models to extend the lifespan by targeted mutations that interfere with growth hormone/IGF-1 and IGF-1 signaling cascades. A recent finding that IGF-1 is involved in aging in mice was achieved by using liver-specific knockout mutant mice, and this clearly demonstrated that the IGF-1 signal pathway can extend the lifespan in both invertebrates and vertebrate models. Although the underlying molecular mechanisms for the control of longevity are not fully understood, it is widely accepted that reduced IGF-1 signaling plays an important role in the control of aging and longevity. Several genes involved in the IGF-1 signaling system are reviewed in relation to longevity in genetically modified mice models.

• Korea Journal of Hospital Management
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• 제9권4호
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• pp.87-100
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• 2004

The main objective of this paper is to investigate the burnout state, coping types, and their relationship with organizational citizenship behavior, and based on the investigation, to provide some reference materials for effective management of burnout and appropriate methods of coping. For this purpose, employees of Korean Red Cross Blood Center were selected as the subject of the research. Data for empirical analysis were obtained through mail survey using structured and self-administered questionnaire for 282 employees of five Red Cross Blood Centers across the nation. Following is the summary of the results: 1) Degree of organizational citizenship behavior was higher among the married, the forties in age, and the employees whose major reason for choosing to work at the Center was 'to help other people.' On the other hand, degree of burnout was higher among the single but lower among the forties in age and the employees who chose to work at the Center because of suitable abilities and interests. As for the types of coping, problem-oriented coping method was more frequently used by the married, older, relatively more-educated and higher-grade employees. 2) Among the three kinds of burnout, 'achievement burnout' was found to have the greatest influence on the organizational citizenship behavior, negatively affecting organizational citizenship behavior as a whole and all of its components except for 'sportsmanship.' Next was 'impersonality burnout,' which also had negative effect on organizational citizenship behavior as a whole, and altruism, conscientiousness and sportsmanship among the components. Finally, 'emotion burnout' appeared to have positive effect on altruism and courtesy but negative effect on sportsmanship. 3) Among the various types of coping, 'problem-oriented' and 'positive perspective' coping methods were found to positively influence overall organizational citizenship behavior, whereas 'stress dissolution' had negative effect. These results imply that special management, counselling and education are needed for sociodemographic groups with high burnout to utilize problem-oriented and positive perspective coping methods which are considered to have desirable effects in coping with burnout problems. In addition, some methods should be devised to prevent and manage the 'achievement burnout' that was found to have great negative influence on organizational citizenship behavior.

• Archives of design research
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• 제12권4호
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• pp.182-190
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• 1999

There has been the rapid change of paradigm with the overflow of terms related to computers such as information, digital, cyber, virtual world and the change of time concept on the ground that it is common to change the world into virtual time. This study is about cybercharacters working in air-broadcasting with rapidly-developing internet, The cybercharacters including 3D animation developed from 2D animation are know to be manufactured with use of electronic mediun and computers and to exist in electronics. Though the emergence of the cybercharacters has a lot of gflnetic roots according to their objectives, they have in common that they are made by 3D graphics and they work in the virtual space, The great traits of the cybercharaters lie in the extension of interfacial function and ecological growth. In the cyberspace the interface, the meeting point between a computer and its users is the most important, The cybercharacters as medium providing new ruman interface become effective with growing interest in virtual reality, The cybercharacters also keep the ecological traits, They can also bring about added value with infusion of image and development of the network, These cybercharacters can also play the important parts in the continually developing cyberspace, The successful birth of the cybercharacter are based on, the technological power. assistance of fund and the ctrltural background, The information-entertainment of the cybercharacters functions well with the accompinimene of these three things, The cybercharacters can make a subject which keeps single issue as a central point of the virtual realty, The cybercharacters can also be connected with equity of "Korean knowledge information society" in the cultural rule of the internet and sociocul tural identity, identity.

• Journal of Distribution Science
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• 제12권8호
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• pp.91-102
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• 2014

Purpose - Today, the importance of the service industry has increased. Social welfare businesses that follow the non-profit principle have neglected the distribution of the service. However, an intangible service, when produced and consumed, has a similar service delivery system to common service distribution and social welfare. Therefore, the author has assumed the efficiency of the service delivery system of social welfare to be equivalent to the service distribution industry. Hence, various kinds of social welfare services for the prevention of elderly suicide, from the perspective of distribution, are discussed. Studies on generational relations have thus far investigated depression from parent-children conflict, and satisfaction with their lives. Studies on the relationship between family solidarity and elderly suicide by analyzing existing social problems are rare. This study investigated the effects of family solidarity between old parents and adult children upon elderly suicide by analyzing serious psychological and social problems. This study revealed basic measures for elderly suicide prevention through services that could elevate family solidarity from the perspective of social welfare service distribution. Research design, data, and methodology - The subjects were 468 elderly, 65 years or older, at 18 senior welfare centers and halls for the elderly at Seoul and Gyeonggi-do. Questionnaire surveys, excluding invalid answers, were analyzed. Convenience sampling was used from February 5, 2014 to March 5, 2014. The findings were: First, women and those having spouses with advanced educational backgrounds and social activities had primary solidarity such as contact solidarity, affectionate solidarity, functional solidarity (giving help), and functional solidarity (receiving help). In addition, those who had good health, from a subjective point of view, had more solidarity. Second, the elderly who were men and single, and who had poorer educational backgrounds thought of suicide, lacked social activities, and had poor health, from a subjective point of view. Third, family solidarity between old parents and adult children had significantly negative influence on the suicidal ideation of the elderly. Results - The study revealed the following implications. First, the preparation for old age should consider not only economic welfare but also the psychological welfare due to the relationship with children. Second, the phenomenon of elderly suicide because of a lack of family solidarity could increase national loss and have great influence upon welfare in old age. Therefore, planning of welfare services for the elderly should consider the value of relationships with children to improve the psychological welfare of the elderly. Third, the social expenses of government-oriented support for parents should be discussed from the people's point of view. Conclusions - The subjects of the study comprised the elderly at Seoul and Gyenggi-do; therefore, it would be difficult to extrapolate the findings to all the elderly in the nation. The subject visited senior welfare centers as well as halls for the elderly; therefore, it would be difficult to assume that the trends were representative of the elderly in the nation.