• Korea journal of population studies
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• v.29 no.3
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• pp.159-188
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• 2006

This study attempts to create a longitudinal dataset by linking tdata on the identical individuals across the monthly sample household management lists of the Economically Active Population Survey(EAPS) and the Household Income and Expenditure Survey(HIES). Using the data constructed through such process, the study also tryies to analyze the duration of longitudinal responses and the characteristics of nonrespondents. Between 1998 and 2002, longitudinal response rates had declined to 46% of total EAPS and 34% of total HIES. The fact that nonresponse was not a random phenomenon leads to concerns about the representativeness of the remaining sample. Using Cox's proportional hazard model the study revealed that the duration of longitudinal responses is affected by the ownership of house and the age of the respondent.

• Pediatric Infection and Vaccine
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• v.10 no.1
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• pp.127-131
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• 2003

Hyperimmunoglobulin E syndrome(HIES) is a primary immunodeficiency characterized by severe recurrent soft-tissue infections, pneumonias, pruritic dermatitis and markedly elevated serum IgE levels. Pneumatocele and empyema develop as result of recurrent pneumonias. It is inherited in an autosomal dominant fashion, with variable expressivity. We experienced the case of a 10 month old girl with hyper IgE syndrome. Patient was admitted for local ulceration and muscle soreness at the site of BCG inoculation. The diagnosis of hyper IgE syndrome was made because she had a coarse facial appearance, pruritic dermatitis, pneumatocele and markedly elevated serum IgE level with a past history of frequent skin abscess and pneumonia.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.460-462
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• 2001

국내외적으로 의료 데이터의 전산 자동화 처리에 관심과 노력이 기울여 진 후 대부분의 병원에 의료 정보 시스템이 보급되었다. 의료 데이터가 컴퓨터 시스템에 저장되어 병원 내 각 부서별 자원의 공유가 가능하거나 병원 간 자료 전송이 원활하게 이루어진다면 오프라인으로 처리 및 보관하는데서 발생하는 자료의 관리 노력과 비용을 절감할 수 있다. 또한 인터넷 전용선과 광케이블의 보급으로 인하여 원격 시스템 사용이 원활하게 진행될 전망이며, 치료 정도 시스템의 경우 원격 진료 및 환자 정보 검색이 가능하게 된다. 하지만 의료 데이터가 인터넷을 통해 전송될 경우 환자의 사생활 침해 및 의사와 환자 간의 비밀 보장이 파괴될 우려가 남아있게 된다. 데이터 접근 권한 및 데이터 전송에서 오는 보안 기법이 확립되어야 하나, 국내의 경우 의료 정보 유출에 대한 법령과 체계적인 지침 등이 미흡한 상태이다. 이에 본 논문에서는 전자 문서 교환 표준으로 제안되고 있는 XML을 이용하여 의료 데이터가 전송 공유 가능한 병원 정보 교환 시스템(Hospital Information Exchange System : HIES)을 구축하고 데이터 접근 및 전송에 적용 가능한 보안 기법을 소개하고 있다.

• The Korean Journal of Applied Statistics
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• v.23 no.2
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• pp.325-333
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• 2010

Protection against disclosure of survey respondents' identifiable and/or sensitive information is a prerequisite for statistical agencies that release microdata files from their sample surveys. Coarsening is one of popular methods for protecting the confidentiality of the data. Grouped data can be released in the form of microdata or tabular data. Instead of releasing the data in a tabular form only, having microdata available to the public with interval codes with their representative values greatly enhances the utility of the data. It allows the researchers to compute covariance between the variables and build statistical models or to run a variety of statistical tests on the data. It may be conjectured that the variance of the interval data is lower that of the ungrouped data in the sense that the coarsened data do not have the within interval variance. This conjecture will be investigated using the uniform and triangular distributions. Traditionally, midpoint is used to represent all the values in an interval. This approach implicitly assumes that the data is uniformly distributed within each interval. However, this assumption may not hold, especially in the last interval of the economic data. In this paper, we will use three distributional assumptions - uniform, Pareto and lognormal distribution - in the last interval and use either midpoint or median for other intervals for wage and food costs of the Statistics Korea's 2006 Household Income and Expenditure Survey(HIES) data and compare these approaches in terms of the first two moments.

• Journal of the Korean Wood Science and Technology
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• v.12 no.4
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• pp.36-46
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• 1984

In order to investigate the inhibitory index (I) and the effects of hot water extraction treatments and addition of accelerators on the index in hardening of Korean lignocellulosics, portland cement (Type I) and water system, hydration tests were carried out on 8 Korean lignocellulosics, namely, Pinus densiflora, Pinus rigida, Pinus koraiensis, Abies holophylla, Larix leptoiepis, Populus alba-glandulosa, rice husk and rice stalk with or without hot water extraction or chemical additives. The inhibitory index of Pinus densiflora and Pinus rigida found to be suitable under limited conditions for composite without any treatment. With hot water treatment rice husk, Pinus koraiensis, Larix leptolepis, and A hies holophylla were reclassified from not suitable to suitable under limited conditions. Combining hot water extraction with chemical addition of accelerator, calcium chloride of magnesium chloride, Populus alba-glandulosa, Larix leptolepis, and Pinus rigida became highly suitable.

• Journal of Ubiquitous Convergence Technology
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• v.1 no.1
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• pp.23-27
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• 2007

Fruition for a diverse uIT(Ubiquitous Information Technology) service is currently required through the convergence of what is known as ubiquitous computing technology. In recent years, with the rapid growth of the need for information services, heavier demands have been made upon the supply of high-quality multimedia services that require a high bandwidth. Today, various home network solutions have been proposed to manage these service smoothly and a system able to deal with various types of network traffic without delays. In addition, in established home network environments that mix wired and wireless networks, along with the steady evolution of wireless network technology and the earnest development of ubiquitous computing technology, sensor-based wireless networks have emerged as a core solution for home networks. In this paper, a sensor network-based home control system supporting the next generation home gateway system for ubiquitous home environments is designed and implemented.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2003.05a
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• pp.338-346
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• 2003

Information Technology (IT) and the internet have been major drivers the changes in all aspects of the business processes and activities. They have brought major changes to the financial statements audit environment as well, which in turn has required modifications in audit procedures. There exist, however, certain difficulties with current audit procedures especially for the assessment of the level of control risk. This assessment is primarily based on the auditors' professional judgment and experiences, not based on the objective hies or criteria. To overcome these difficulties, this paper proposes a prototype decision support model named CRAS-CBR using case based reasoning (CBR) to support auditors in making their professional judgment on the assessment of the level of control risk of the general accounting system in the manufacturing industry. To validate the performance, we compare our proposed model with benchmark performances in terms of classification accuracy for the level of control risk. Our experimental results showed CRAS-CBR outperforms a statistical model (MDA) and staff auditor performance in average hit ratio.

• Journal of the Korean association of regional geographers
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• v.12 no.2
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• pp.189-201
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• 2006

The aim of this paper is to examine the development of regional geography (including regional studies) in Germany since 1945 in the context of its traditions and changes. From 1945 to the end of 1960s, in spite of many hies of renovation regional geography has faced critics and fall into a serious crisis. After the 1970s many geographers intensively have searched for the new conception and broadly accepting methodological way of regional geography, and in the advent of 1980s regional geography is regarded as a special form of collecting and presenting spatial informations in terms of the addressee. But in the after-era of german unification and through the new establishment of the Institut for the Regional Geography in Leipzig, a discussion on the research aim and future of regional geography was resumed, and its future direction is open.

• The Bulletin of The Korean Astronomical Society
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• v.36 no.2
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• pp.115.1-115.1
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• 2011

We analyzed the line profiles of the planetary nebula (PN) NGC 7009 secured with the Keck I HIES and BOES's spectral data. The 5 positions were taken over the nebular image, 4 points on the bright rim plus 1 point at the central position. The covered spectral wavelength range was $3250{\AA}-8725{\AA}$ in these observations. We decomposed the lines of HI, HeI, HeII, CII, NIII, [ClIII], [NII], [OII], [OIII], [SII], [SIII], [ClIII], and [ArIII] using the IRAF and StarLink/Dipso. After correcting the Earth's movement and the PN's radial velocities, -48.6 & -48.9 km/s, respectively, for the Keck & BOES, we produced the line profiles in a velocity scale. The zero velocity at each line profile clearly indicates which part of the components is approaching or receding, giving a general information of the kinematical structure. Almost all of the low-to-medium excitation lines, such as [NII], [SII], [O III], and [ArIII], secured at the central position and four positions along the major & minor axes, showed 3 components, double peak + a wide wing component, suggesting the fast outflow structures are present. The overall geometry is a prolate shell which also has a fainter outer shell in the halo zone, but there appears to be some peculiar sub-structures inside the main shell. The high excitation He I, HeII, NIII lines which might be formed close to the inner boundary of the shell show unusual features, completely different from the other lines. The HeII and these high excitation lines may be indicative of a relative recent fast outflow from the central star and the permitted lines such as NIII might be affected by the innermost structure. We discuss a possible presence of a jet-like fast outflow structure in an out-flow axis different from the main axis of the spheroid shell.