• Journal of Science Education
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• v.38 no.2
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• pp.231-243
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• 2014

The purpose of this study was to compare the duplication problem of achievement standards between science and other subjects in the 2009 Revised National Curriculum and to search for solutions and implications for this problem. From the results of this study, we found that the achievement standards of practical arts, social studies, physical education and ethics were overlapped with science's ones. The duplication of content elements for 'our body and health', 'living things and environment', 'biodiversity' and 'natural disaster' categories was not high, that is, their achievement standards were relatively well-differentiated and reflected the intrinsic characteristic of each subject under common topics. But, in case of 'reproduction and development' and 'world of technology' categories, the problem of duplications was serious. In order to cope with this problem, we need to consider solutions such as merging or integrating the achievement standards of related subjects. The relevant experts should conduct in-depth discussion and negotiation, and develop achievement standards more consistent with the identity of each subject.

• Progress in Superconductivity
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• v.4 no.1
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• pp.42-47
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• 2002

Measuring magnetic fields with a SQUID sensor always requires preliminary adjustments such as optimum bas current determination and flux-locking point search. A conventional magnetoencephalography (MEG) system consists of several dozens of sensors and we should condition each sensor one by one for an experiment. This timeconsuming job is not only cumbersome but also impractical for the common use in hospital. We had developed a serial port communication protocol between SQUID sensor controllers and a personal computer in order to control the sensors. However, theserial-bus-based control is too slow for adjusting all the sensors with a sufficient accuracy in a reasonable time. In this work, we introduce programmatic control sequence that saves the number of the control pulse arrays. The sequence separates into two stages. The first stage is a function for searching flux-locking points of the sensors and the other stage is for determining the optimum bias current that operates a sensor in a minimum noise level Generally, the optimum bias current for a SQUID sensor depends on the manufactured structure, so that it will not easily change about. Therefore, we can reduce the time for the optimum bias current determination by using the saved values that have been measured once by the second stage sequence. Applying the first stage sequence to a practical use, it has taken about 2-3 minutes to perform the flux-locking for our 37-channel SQUID magnetometer system.

• Journal of Families and Better Life
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• v.30 no.1
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• pp.29-40
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• 2012

The purpose of this study is to find out the problems of current housing construction standards related to community facilities and to suggest the vitalizing strategies that enhance the sense of community among the residents living in apartment housing complexes. For the purpose, three times small group workshops were executed during April 26~May 3, 2010 for 14 professionals in construction company, university, research institute, and housing management company. Based on the results of small group workshops, questionnaire survey for the 10 professionals was done during August 13~23, 2010 to find out the additional opinions about the revision of housing construction standards related to community facilities in apartment housing complexes. Respondents indicated that the current housing standards related to the types and the area of community facility are too strict to respond to the diverse characteristics and needs of residents. Professionals suggested the newly revised standards that sum up the whole area of community facilities instead of the existing standards that regulate the area of each community facility in an apartment housing complex. Also, they recommended the regional community center that include several facilities in one common community building.

• Proceedings of the KIEE Conference
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• 1992.07b
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• pp.626-628
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• 1992

GCB(Gas Circuit Breaker) and GIS(Gas Insulated Switchgear) using $SF_6$ are worldwidely applied over 72.5KV classes. It Is known that $SF_6$ gas has the most superior characteristics among the extingushing and insulating media. Our Company has produced GCB and GIS from early 1980's and at present, we are producing 362KV 40KA class which is the highest voltage in our country. According to change KEPCO's standards (ESB standards), our company has redeveloped and tested for all productions type from 1989. During redeveloping, we largely contribute raise reliability of power system, through all the more improvement for performance and quality of manufactures. One of them, we developed 170KV 50KA GCB with common three-pole operating mechanism and sucessfully completed test of KERI under KEPCO presence, at first in our country. Thus, we announce the outline of it.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.6
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• pp.2354-2376
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• 2020

SmartThings is one of the most popular open platforms for home automation IoT solutions that allows users to create their own applications called SmartApps for personal use or for public distribution. The nature of openness demands high standards on the quality of SmartApps, but there have been few studies that have evaluated this thoroughly yet. As part of software quality practice, code reviews are responsible for detecting violations of coding standards and ensuring that best practices are followed. The purpose of this research is to propose systematically designed quality metrics under the well-known Goal/Question/Metric methodology and to evaluate the quality of SmartApps through automatic code reviews using a static analysis. We first organize our static analysis rules by following the GQM methodology, and then we apply the rules to real-world SmartApps to analyze and evaluate them. A study of 105 officially published and 74 community-created real-world SmartApps found a high ratio of violations in both types of SmartApps, and of all violations, security violations were most common. Our static analysis tool can effectively inspect reliability, maintainability, and security violations. The results of the automatic code review indicate the common violations among SmartApps.

• Korean Institute of Interior Design Journal
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• v.25 no.4
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• pp.113-124
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• 2016

This research examines domestic and oversea's barrier-free design guidelines provided exclusively for children and their implementations in the common spaces of the outpatient clinics in two pediatric rehabilitation hospitals in Seoul. Based on literature review, a checklist was developed to compare various barrier-free design guidelines in consideration of children's accessibility in space. In addition, four spatial areas in the outpatient clinics of the two hospitals were investigated based on the checklist. As a result, the domestic and Japanese guidelines were aiming primarily to all user groups regardless of ages. Whereas in other oversea's guidelines, a number of barrier-free design standards exclusive for children were found in the facility items such as handrail, sink, urine, toilet, water fountain, chair, table, shelve, and so on, throughout the indoor waiting and sanitary spaces. Concerning implementations, most of the items in the indoor passage, waiting, and sanitary spaces of the two hospitals were not sufficiently facilitated enough to meet with the barrier-free design standards exclusive for children. As such, it is recommended to review and improve the current domestic barrier-free design guideline to accommodate various physical and spatial needs of children in all age groups and regardless of disability types, in the design of a pediatric rehabilitation hospital in the future.

• Wind and Structures
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• v.15 no.5
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• pp.423-439
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• 2012

Three common medium- rise building forms were physically tested to study their overall wind induced structural response. Emphasis was placed on the torsional response and its correlation with other peak responses. A higher correlation was found between the peak responses than between the general fluctuating parts of the signals. This suggests a common mechanism causing the peak event, and that this mechanism is potentially different to the mechanism causing the general load fluctuations. The measurements show that about 80% of the peak overall torsion occur simultaneously with the peak overall along wind drag for some generic building shapes. However, the peak torsional response occurs simultaneously with only 30%-40% of the peak overall drag for the rectangular model. These results emphasise the importance of load combinations for building design, which are often neglected in the design of medium sized rigid buildings for which the along-wind drag is dominant. Current design wind loading standards from around the world were evaluated against the results to establish their adequacy for building design incorporating wind-induced torsion effects. Although torsion is frequently neglected, for some structural systems it may become more important.

• Journal of the Korean Society for Library and Information Science
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• v.49 no.4
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• pp.53-73
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• 2015

This study aims at developing standardized needs assessment tool for school library facilities. To find common properties of school library facilities, this study explored KLA's Standards for Korean Libraries, IFLA's The School Library Guidelines and AASL's Empowering Learners. Through these standards 10 common properties are selected to include in the assessment tool. As the result, this study proposed needs assessment tool for school library facilities in form of survey and several ways to apply it according to each library situation.

• Journal of ILASS-Korea
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• v.9 no.1
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• pp.15-20
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• 2004

The post injection effect to enhance aftertreatment devices' performance is essential to meet future stringent emission standards by controlling exhaust gas temperature and emission pollutants. The test has been made with commercial common rail diesel engine by post injection manipulation, to optimize exhaust gas temperature while guarantee low fuel penalty. The optimization was done at 1500, 2000 and 2500[rpm] for 2, 4[bar] condition which show low exhaust gas temperature. The main purpose of this test is dedicated to understand mechanism of exhaust gas temperature rise while optimizing

• The Journal of Korean Institute of Communications and Information Sciences
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• v.15 no.2
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• pp.81-87
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• 1990

International time comparisons using a commercial GPS receiver, with the common-view program of GPS satellite time links, have been carried out between Korea Standards Research Institute(KSRI) and Communications Research Laboratory(CRL) of Japan, and also between KSRI and United Stated Neval Observatory(USNO). The frequency stability is about 1.5 parts in $10^-13$ for the averaging time of 1day. The result of time comparisons obtained by the GPS common-view technique was about 10 times better than that by the LORAN-C(Long Range Navigation) ground wave technique.