• Journal of the Korean Society of School Health
• /
• v.8 no.2
• /
• pp.293-303
• /
• 1995

Health has occupied a position of importance in the human history, whether it be in the East or in the West, and it is a subject in which people have been constantly interested. The concept of health has changed continuously as the society has developed, industrialized and become more structured. The perception of health concept can be an esential factor which is to determine the health behaviors. This study is a descriptive inquiry done to identity high school students' perception of health and what they do as health behaviors. The subject consisted of 503 voctional high school seniors, 129 boys and 374 girls, from a school located in An-san Si, kyong-gi Do. The instruments used for this study were open-ended questionnaires and data were collected by having the students fill out the questionnaires which took 10 minutes, in their first class, April 6, 1995. The collected materials were classified and recorded on the cards according to each question using the terms which students had written. After putting statements which had common meanings together, the representative categories were labelled. The results obtained are as follows. 1. Categorizing and labelling of health concepts What high school students descripted as health concepts were classified as the absence of illness, physical comfort, strong physical strength and physique, not having a deformity, resisting power, self control mental-rest(or psychological comfort), wholesome ideas, self-control, harmony in body and in mind, maintenace of daily life, pleasant life, good friends, peaceful family life and realizing objectives. 2. Categorizing and labelling of health behaviors These were classified as preventive life, good dietary habits and regimen, maintenance of clean body, exercises, preventing obesity, rest, environmental balance or control of environment, limit one's tastes, making use of leisure, peaceful mind, sound thought and regular living habits. The result indicates that the health concepts were positive and included not only absence of illness but also harmony in body and in mind and pleasant life; health behaviors which had high frequency were good dietary habits and regimen, exercises and sound thought. It is hoped that these findings well serve as practical references for teachers when they counsel with, and provide the students with guidance programs which include health care.

• Journal of the Earthquake Engineering Society of Korea
• /
• v.15 no.2
• /
• pp.53-60
• /
• 2011

When designing building structures, dynamic serviceability is one of the most important items. Much research is being carried out on machine vibrations that affect inside residents and expensive equipment in the building structure. The vibration effect generally depends on the mass ratio, and an adequate mass ratio is determined by comparison with the serviceability limit according to the criteria. This study investigates the evaluation of vibration serviceability by using ISO 2631 to confirm the propriety of adequate mass ratios and it is verified that the application of a complicated FE model to model the real large shaking table facility with the mathematical model simulated as a SDOF system. The weighted RMS value is then compared with the comfort limit given by ISO 2631. As a result, the analysis of the numerical model is consistent with analysis of the FE model. Moreover, it is found that the adequate mass ratio of the concrete foundation and shake table, considering the self-weight of the real facility, should be less than 0.013. It is also confirm that the sample facility is satisfies the requirement of an adequate mass ratio.

• International journal of steel structures
• /
• v.18 no.4
• /
• pp.1252-1264
• /
• 2018

Long span bridges such as steel cable stayed and suspension bridges are usually more flexible than short to medium span bridges and expected to have large deformations. Deflections due to live load for long span bridges are important since it controls the overall heights of the bridge for securing the clearance under the bridge and serviceability for securing the comfort of passengers or pedestrians. In case of sea-crossing bridges, the clearance of bridges is determined considering the height of the ship master from the surface of the water, the trim of the ship, the psychological free space, the tide height, and live load deflection. In the design of bridges, live load deflection is limited to a certain value to minimize the vibrations. However, there are not much studies that consider the live load deflection and its effects for long span bridges. The purpose of this study is to investigate the suitability of live load deflection limit and its actual effects on serviceability of bridges for steel cable-stayed and suspension bridges. Analytical study is performed to calculate the natural frequencies and deflections by design live load. Results are compared with various design limits and related studies by Barker et al. (2011) and Saadeghvaziri et al. (2012). Two long span bridges are selected for the case study, Yi Sun-Sin grand bridge (suspension bridge, main span length = 1545 m) and Young-Hung grand bridge (cable stayed bridge, main span length = 240 m). Long-term measured deflection data by GNSS system are collected from Yi Sun-Sin grand bridge and compared with the theoretical values. Probability of exceedance against various deflection limits are calculated from probability distribution of 10-min maximum deflection. The results of the study on the limitation of live load deflection are expected to be useful reference for the design, the proper planning and deflection review of the long span bridges around the world.

• Journal of Korean Physical Therapy Science
• /
• v.27 no.3
• /
• pp.35-44
• /
• 2020

Background: This study was to confirm the effect and feasibility of knee extension assist orthosis (KEAO) on balance and gait in subacute stroke patients. Design: Case study. Methods: The subjects of the study were 4 subacute stroke patients, who had an onset period of less than 6 months. The limit of stability (LOS) and berg balance scale (BBS), timed up and go test (TUG) were used to verify the dynamic balance ability, static balance ability, and gait ability pre and post and after wearing the knee extension assist orthosis (KEAO). In addition, the satisfaction survey was to confirm the feasibility of the knee extension assist orthosis (KEAO) through the to Korean quebec user evaluation of satisfaction assistive technology 2.0 (K-QUEST 2.0). Results: After the wearing on KEAO, the distance for the limit of stability decreased by mean 541.25±240.46 mm2, and the score on the berg balance scale improved by mean 5±2.71 point, and the time for the timed up and go test deceased by mean 3.75±1.71 second. The stability and durability were found to be full score, and the control, ease, effectiveness were some high score, and the size, weight, comfort were some low score in the satisfaction and feasibility. Conclusion: The knee extension assist orthosis (KEAO) produce in this study was improved the static balance ability, dynamic balance ability and gait ability of subacute stroke patients, and the satisfaction and feasibility were high in the stability, durability and effectiveness of the user.

• The Journal of the Korea Contents Association
• /
• v.22 no.8
• /
• pp.200-210
• /
• 2022

The purpose of this paper is to analyze Hirata Oriza's three plays, "Scientific Minds," "Monkeys on the Northern Limit Line" and "Balkan Zoo" with Lyotard's postmodern scientific view. Liotar, who claims that science and narratives follow the rules of their own pragmatic use, talks about the incommensurable parallelism between the two. Hirata Oriza points out that humans rely on narratives in the postmodern world. This paper analyzes Hirata Oriza's plays in three aspects. First, in the postmodern world where the master narrative has disappeared, it identifies the point where the boundaries that define the identity of human beings under the lost and developing science technology are fading. Second, we look at the pattern in which the parallelism between scientific knowledge and narrative knowledge is constantly diluted due to the characteristics of humans who understand the world by leaning on narrative. Finally, the aspects of small narratives are idetified, raised by individuals to comfort themselves toward a world where the master narrative disappears and is justified only by maximizing performance.

• International Journal of High-Rise Buildings
• /
• v.5 no.1
• /
• pp.1-12
• /
• 2016

The 1100 foot [335 m] tall Wilshire Grand Center tower under construction in Los Angeles illustrates many key outrigger issues. The tower has a long, narrow floor plan and slender central core. Outrigger braces at three groups of levels in the tower help provide for occupant comfort during windy conditions as well as safety during earthquakes. Because outrigger systems are outside the scope of prescriptive code provisions, Performance Based Design (PBD) using Nonlinear Response History Analysis (NRHA) demonstrated acceptability to the Los Angeles building department and its peer review panel. Buckling Restrained Brace (BRB) diagonals are used at all outrigger levels to provide stable cyclic nonlinear behavior and to limit forces generated at columns, connections and core walls. Each diagonal at the lowest set of outriggers includes four individual BRBs to provide exceptional capacities. The middle outriggers have an unusual 'X-braced Vierendeel' configuration to provide clear hotel corridors. The top outriggers are pre-loaded by jacks to address long-term differential shortening between the concrete core and concrete-filled steel perimeter box columns. The outrigger connection details are complex in order to handle large forces and deformations, but were developed with contractor input to enable practical construction.

• Journal of Agricultural Extension & Community Development
• /
• v.22 no.2
• /
• pp.117-133
• /
• 2015

This study explored at marital conflict in multicultural families, a type of families formed through international marriages, from husbands perspectives. For the purpose of this study, in-depth interviews were used with husbands in multicultural families to ask about marital conflict, and then, conducted a qualitative case analysis. In summary, results of this study are as follows; First, among the decisive events that husbands in multicultural families often experienced in marital conflict with their wives were disrespect toward husbands and parents-in-law, husbands with a low level of trust, feelings of pressure due to financial support for wives' families and children and lack of practical sense about marriage. Second, development of marital conflict that husbands often experienced included aggravated cultural conflict between a couple and between members of the family, difficulty in managing blame and anger, signs of separation or divorce and wives leaving home and limitations in conversation and communication. Third, as to how husbands tried to deal with marital conflict, they tried to be patient and comfort wives, engage in economic activities together, find something that they could focus on, turn to religion or gatherings, use service from government organizations, have trust and develop rules and limit the range of their wives activities.

• Biomaterials and Biomechanics in Bioengineering
• /
• v.2 no.4
• /
• pp.237-248
• /
• 2015

"Dynamic stabilization" systems have been developed in recent years to treat degenerative disorders of the spinal column. In contrast to arthrodesis (fusion), the aim here is to conserve intervertebral mobility to maximize comfort. When developing innovative concepts, many mechanical tests need to be carried out in order to validate the different technological solutions. The present study focuses on the B Dyn$^{(R)}$ "dynamic stabilization" device (S14$^{(R)}$ Implants, Pessac, France), the aim being to optimize the choice of polymer material used for one of the implant's components. The device allows mobility but also limit the range of movement. The stiffness of the ring remains a key design factor, which has to be optimized. Phase one consisted of static tests on the implant, as a result of which a polyurethane (PU) was selected, material no.2 of the five elastomers tested. In phase two, dynamic tests were carried out. The fatigue resistance of the B Dyn$^{(R)}$ system was tested over five million cycles with the properties of the polymer elements being measured using dynamic mechanical analysis (DMA) after every million cycles. This analysis demonstrated changes in stiffness and in the damping factor which guided the choice of elastomer for the B Dyn$^{(R)}$ implant.

• The Transactions of the Korean Institute of Electrical Engineers P
• /
• v.64 no.4
• /
• pp.199-206
• /
• 2015

A rising attention is paid to the railway system in many countries. KOREA is also of the opinion that the railway has to play a more important role in the near future to face up to the problems that increase gradually in the transport sector. To attract more traffic to the rail networks, it is important for rail modes to have running time competitiveness. Tilting trains, where it is possible to tilt the car-body towards the center of the curve, are a less expensive alternative to shorten travelling times on existing lines. Running time for tilting train is one of the most important factors, with which passenger demand forecasting or economic feasibility analysis will be done. This paper evaluates the speed limitation of tilting train around curves and also presents calculation process of its simulated possible running time. Then the adequacy of estimated time is verified with running time for Korean protype tilting train TTX (Tilting Train eXpress) by actual test run. As a case study, the estimated running time for the production version of tilting train and its time saving are presented compared with 2012's conventional Saemaul trains and non-tilting trains on the Gyeongbu line in the Korean rail network.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
• /
• v.49
• /
• pp.89-109
• /
• 2011

Among various export financing, forfaitng and factoring give a comfort to exporters as those special financing schemes are extended to them on a without recourse basis. This is good for the exporters in terms of financing and risk cover of buyer or LC issuing banks. To enjoy this benefit, the SME exporters should, however, know the risks involved in sales contract. For example, if the export and importer set Korean law as governing law in the sales contract especially for open account exports, the exporter's receivables might be not welcome by factors according to provisions of Korean Conflict Law and it's application. Those regulations tell that the factor's position would be unstable when the sales contact limit exporter's assignment of receivables to the factor when the sales contract is subject to Korean law. Also the exporters should know related regulation of importer which might affect the assignment of receivables as well. This paper suggests the Korean exporters take internationally recognized agreement/convention such as UNI|DROIT Convention on International Factoring, UN Convention on the Assignment of Receivables in International Trade.