• Proceedings of the IEEK Conference
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• 2005.11a
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• pp.113-118
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• 2005

Softswitch is the core BcN equipment which voice and multimedia switching based on the IP Technologies. It is designed to replace the Class 5(local Exchange) and Class 4(Toll Exchange) switch based on the circuit wired and wireless switching network technologies. Softswitch gets its name because typically it is a software based solution implemented on general purpose computers/servers. While the traditional PSTN switches are rely on dedicated facilities for T and S inter-connection and are designed primarily for voice communications. Packet based Softswitch is divided the control of call and bearer, very different from Public telephone network. Sometimes Call Agent or Media Gateway Controller, a key component in the VoIP solution, is also called Softswitch. This paper will suggest the software architecture of softswitch for performance in call processing part, also suggest the session management model to cover call setup latency.

• Electronics and Telecommunications Trends
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• v.4 no.1
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• pp.35-43
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• 1989

The evolution of telecommunications has raised the profile of many segments of the network that were not previously considered important. Until recently, basic telephony existed with the extension of passive cables without any particular user network interface. In the area of data communications, the introduction of flexible packet switching has allowed the network to evolve in a far more efficient manner. To overcome such separated network problems and business needs of both users and network providers, the integrated narrowband ISDN concept is being developed in most countries for implementation in the public switched telephone network (PSTN). The targets of ISDN, in my opinion, can be explained as follows : To the user, ISDN should provide the services at any time, at any place, through any media. To the business customer using PABX or LAN applications, ISDN should introduce customized services rapidly and also, ISDN should be developed by the modular hardware and software design approach in order for new services to be introduced rapidly and effectively. Software can be also developed by non-expert local staff to cater for adopting new user's service requirements immediately. Finally, ISDN will be able to increase business chances and benefit both users and operating companies.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2008.02a
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• pp.7-11
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• 2008

최근의 로봇에 대한 연구를 살펴보면 인간-로봇 상호작용과 시스템의 통합에 관련된 연구가 증가하고 있음을 알 수 있다. 또한 인식 및 인지에 관련된 요소기술들은 이미 상당한 수준에 올라서 있다. 이를 바탕으로 전 세계적인 로봇연구의 추세는 요소기술들의 통합을 통하여 완전한 개체로서의 로봇을 만들려고 하고 있으며 상업화된 시장으로 끌어내려는 쪽으로 변화하고 있다. 그러나 로봇을 상업화된 시장으로 끌어내기 위한 다양한 연구와 노력에도 불구하고 많은 부분에서 부족한 것이 현실이며, 지금까지 개별적으로 개발된 각 요소기술의 통합 또한 필수적이다. 특히 인간과 비슷한 인지능력의 확보를 위한 불확실성 극복능력과 개별적인 요소기술의 성능에만 의지하지 않는 인식능력의 확보는 서비스로봇의 신뢰성 향상을 위하여 필수적이다. 본 논문에서는 이러한 문제를 해결하기 위해서 행위적 인지 개념을 제안하였으며 Cognitive Robotic Engine을 통하여 이를 구현하여 상용화된 서비스로봇 플랫폼에 적용하여 실험하였다.

• Journal of Information Technology and Architecture
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• v.11 no.2
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• pp.131-141
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• 2014

Refining the monitoring and evaluation reporting is an important thing in e-Government. Indonesia which has had e-Government roadmap since 2000, has not had the systematic mechanism to monitor and evaluate e-Government in which the report can be easily accessed by the public and used to be the best practice to improve other e-Government implementation. Enterprise architecture (EA) has the major objective to straighten an enterprise to its necessary requirements. It can be used to propose the required system and that was the purpose of this paper. It was started by reviewing the literature about e-Government monitoring and evaluation, using quality of service as the means, and understanding TOGAF as one of EA framework. The second step was comparing EA and the evaluation of e-Government in Korea and Indonesia to get the best practices. And the last step was creating EA for the monitoring and evaluation reporting system based on Korea and the literature reviewed. It is expected that the formulized EA can be a tool to improve e-Government implementation in Indonesia.

• Journal of the Korean Society for Library and Information Science
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• v.16
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• pp.243-279
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• 1989

Public library effectiveness is determined by a complexity of the internal and external environments of the library. The purpose of this article is to investigate community environments and library resources as determinants of the output measures of the 15 municipal libraries in Seoul and to cope with changes in the environments for the improvement of their performance. This study is based on the hypotheses that the library's output would be proportioned to the size of budget and library collection, and to the relationships between the characteristics of the library and of the community in which the library develops. The variables identified in this .study are population density, family size, institutions (social, cultural, financial and educational), presence of the mass media, size of service area, and economic level of the community. The output measures employed for analysis are: number of professional staff, expenditures, number of books in the collection, number of books added annually, total circulation, number of library visits, circullation per capita, library visits per capita, .and registration as a percentage of population. The recommendation made in this study is the innovation of the 15 libraries in organization.

• International Journal of Advanced Culture Technology
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• v.10 no.4
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• pp.226-227
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• 2022

The most dangerous and safest place, the busiest and most serene place, the DMZ where the wounds of the bitter war melt away, but at the same time contain life and healing. In this space of paradox, we now want to look at 'peace'. The KTV documentary 'DMZ Coexistence' is made in the form of a human road documentary that consists of various perspectives looking at the DMZ, various characters, and the most unknown Korean story materials, and the stories related to the performers in UHD 4K. In this study, we will show the process of creating an 'opening title' of 'DMZ Coexistence' captured in 4k and make it usable in academia and industry in the future.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2021.06a
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• pp.123-124
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• 2021

이 연구에서는 국내 재난문자와 미국 WEA의 법령과 표준의 관계를 비교하였다. 국내 재난문자 재난 및 안전관리 기본법을 상위법으로 두는 법령이 있으나 기술적 내용은 대부분 민간 표준단체(TTA)의 표준으로만 제정되어 있다. 따라서 이동통신사와 단말기 제조사는 의무적으로 준수해야 하는 법적 근거가 없다. 한편, 미국은 WEA 연방 규칙에서 기술적 내용을 포함하고 있어서 이동통신사와 단말기 제조사는 의무적으로 해당 내용을 준수해야 한다. 이에, 국내는 이동통신사와 단말기 기종별로 재난문자 서비스의 차이가 발생하고 있지만 미국에서는 이러한 차이를 발견하기 어렵다.

• Journal of Korea Multimedia Society
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• v.19 no.5
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• pp.957-969
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• 2016

The corporate image is one of the key elements improving competitiveness of the business, and is conveyed to the public through a design management strategy and its activities with design identity. Therefore, it is important to enhance the corporate image through systematic design management. Recently, in the field of communication services, as a technical gap between corporations has been narrowed, and the importance of design has been magnified, more and more corporations have adopted the design management. It is, however, not easy to build and convey the corporate image to the public systematically, because not only do the corporations run a communication service, the corporations face various business areas and targets. In this study, we analyzed the relationship between the intended image of the corporate and users' visual experiences based on the surveys on the case of KT, which pioneered design management and has made outstanding design results. According to the result, KT's strategic image concepts have positive effects on users' visual experience in each subarea of its design identity. In conclusion, it is necessary to narrow the gap between users' experiences and images that a corporate intends to convey through continuous research on users' experiences and improvement in a design management system.

• Nutrition Research and Practice
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• v.11 no.3
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• pp.240-246
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• 2017

BACKGROUND/OBJECTIVES: Folic acid supplementation before pregnancy is known to significantly reduce the risk of having a baby with neural tube defects (NTDs). Therefore, it is important for women to be aware of the effects of folic acid supplementation before pregnancy. The purpose of this study was to investigate the awareness and preconceptional use of folic acid and to assess the current knowledge about folic acid among low-income pregnant women in Korea. SUBJECTS/METHODS: A questionnaire survey was conducted in 2012. Five hundred pregnant women were selected from the waiting list for the Nutriplus program implemented in public health centers using a multistage clustered probability sampling design. Data from 439 women were analyzed after excluding ones with incomplete answers. RESULTS: Among women who responded to the questionnaire, 65.6% had heard of folic acid before pregnancy, and 26.4% reported on the preconceptional use of folic acid. Women with a university degree or higher education were more likely to be aware of folic acid and to take folic acid in the preconception period. In a multivariate logistic regression, when age, education level, household income, employment status, gravidity, parity, and folic acid awareness were included in the model, folic acid awareness was a strong predictor of preconceptional folic acid use. As of interview, 85.4% and 77.7% of women were aware of the NTD-preventive role of folic acid and the appropriate time to take folic acid, respectively. The main sources of information on folic acid were healthcare professionals (41.2%), friends and family members (31.2%), and the media (26.5%). CONCLUSIONS: Our results suggest that public health strategies are needed to increase the preconceptional use of folic acid among Korean women.

• Journal of Korean society of Dental Hygiene
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• v.3 no.1
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• pp.1-12
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• 2003

The purpose of this study was to verify the reliability of the instrument and to analyze the contents of the humor. This study was conducted from December 16th, 2002 to January 13th, 2003, centering on Busan Dental Hospital & public health service. A total of 193 questionnaires was distributed for the survey. The result were as followings: 1. There were significant differences in humor values concerning age(F=1l.44, p=0.000), marriage(t= -3.556, p=0.000), education(F=14.83, p=0.000), clinical carrier(F=9.99, p=0.000), status(F=5.83, p=0.001), working place(F=7.39, p=0.000), and living parents(F=3.65, p=0.014). Humor values were higher for over-forties, married dental hygienists, public health service worker and no living parents. 2. There were no Significant correlation between stress and the dental hygienist's humor values. 3. There were significant differences in humor values concerning sources of the dental hygienist's humor. Data related "book/mass media"(t=-6.32, p=0.000), "conversation" (t=-12.05, p=0.000) and "daily life"(t=-10.33, p=0.000) are examples of these sources. 4. There were no significant differences in humor values concerning the dental hygienist's humor degree related frequency of used humor. 5. There were significant differences in humor values concerning the type of humor used, "word humor"(t=-7.00, p=0.000), "imitation"(t=2.68, p=0.008), "adequate situation" (t=-8.03, p=0.000), "technical terms"(t=6.65, p=0.000) pertain to this. 6. There were Significant differences in humor values concerning the time of using humor expression, "loose situation"(t=-3.75, p=0.000), "tired situation"(t=4.01, p=0.000), "tense situation"(t=5.37, p=0.000), "adequate situation"(t=-16.03, p=0.000) pertain to this.