• The Journal of Korean Academy of Prosthodontics
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• v.56 no.4
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• pp.278-286
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• 2018

Purpose: The purpose of this study was to evaluate the effect of healing abutment height and measurement angle on implant stability when using Periotest and AnyCheck. Materials and methods: 60 implants were placed into artificial bone blocks. After implant insertion, 2, 3, 4 and 5 mm healing abutments were installed on 15 specimens, respectively. Insertion torque value, implant stability test, Periotest value were measured. Insertion torque value was controlled between 45 - 55 Ncm. AnyCheck was used for measuring implant stability test and Periotest M was used for measuring Periotest value. Implant stability test and Periotest value were measured at the angles of 0 and 30 degrees to the horizontal plane. Measured values were analyzed statistically. Results: Insertion torque value had no significant difference among groups. When healing abutment height was higher, implant stability test and Periotest value showed lower stability. Also when measurement angle was decreased, implant stability test and Periotest value showed lower stability. Conclusion: When measuring stability of implants with percussion type devices, measured values should be evaluated considering height of healing abutments and measurement angle.

• The monthly packaging world
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• s.118
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• pp.110-116
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• 2003

• The Magazine for Energy Service Companies
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• s.13
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• pp.62-63
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• 2001

• Journal of Korean Academy of Nursing
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• v.21 no.2
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• pp.204-217
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• 1991

The purpose of this study is to verify the effect of lateral position and chest percussion on gas exchange in the decreased level of conscious patients. The Subjects for this study were 21 patients' admitted in ICU of CNUH from Dec 18th, 1989 to Aug 4th, 1990. The Data was analyzed by paired t - test. The results of this study as follows ; 1) In comparison of supine position, good -lung dependent position and good - lung dependent with chest percussion, the difference of PaO ㆍ was statistically significant (P＜0.05). 2) In comparison of supine position, good -lung dependent position and good - lung dependent with chest percussion, the difference of A-a Do ㆍ was statistically significant (p＜0.05). En conclusion, the use of good -lung dependent position and chest percussion was effective nursing intervention on decreased level of conscious patients in ICU.

• Journal of Preventive Medicine and Public Health
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• v.30 no.3 s.58
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• pp.577-584
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• 1997

Validation and Standardization of neurobehavioral instrument in Korean occupational setting has not been studied ever. This study tried to validate the newly developed computerized psychomotor tests, Neurobehavioral Tests for Occupational Screening (NTOS). Male patients with Parkinson's disease(n=12) and male workers who never exposed to occupational neurotoxic materials and didn't have neurologic disease(n=21), performed some tests from NTOS; simple reaction time, choice reaction time(2 choice), and finger tapping(both hands). In simple analysis, difference between patient group and worker group was significantly great. Adjusted for age and education years, simple reaction time and finger tapping(both hand) were statistically significantly different between two groups(p<.05). Choice reaction time was also different(p<.1) but error frequency of choice reaction time test was not. Generally, this results showed NTOS could detect impairment of psychomotor function. But insensitive results of choice reaction time was partly due to small sample size and confounding variables and so required future study and refinement at improvement of NTOS.

• The tire
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• s.48
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• pp.21-21
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• 1973

안전차의 조기개발은 바야흐로 세계의 자동차기술계의 성급한 사명이다. 연이나 안전차는 자동차만의 연구로 해결되는 것은 아니다. 중요부품의 하나인 타이어도 당연이에 일역을 수행 하지 않으면 안된다. 물론 자동차 메이커어에 병행 타이어메이커어도 일야 그에의 노력을 거듭하고 있다. 그래서 안전차의 타이어개발이 가장 진보되어 있다는 소문이 높은 브릿지스톤 타이어에 그뜻을 타진해 봤던바 다음과 같은 회답이 왔다.

• The Optical Journal
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• v.12 no.6 s.70
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• pp.56-60
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• 2000

IMF 이후 해외 전시회 참가 등 광학업체들의 해외 시장 진출 노력이 눈에 띄게 증가하고 있다. 이에 도움을 주기 위해서 오스트리아, 프랑스, 중국의 디지털카메라와 미국의 앨범 및 디지털 인화, 방글라데시의 CCTV 시장 등 각국의 관련 시장을 분석하고 진출 가능성을 타진해 본다. 대한무역투자진흥공사에서 올해 들어 조사한 다양한 해외시장 보고서를 간추린 것이다.

• Digital Contents
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• no.8 s.123
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• pp.26-27
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• 2003

BCD포럼이 열린 지난 7월초는 그라비티의 온라인게임인 '라그나로크'가 미국에서 정식으로 유료서비스를 시작한지 1달이 약간 넘는 시점이었다. 미국 온라인게임시장의 가능성을 타진하기 위해 BCD포럼에 참여했으므로, 현지에서 독자서비스라는 검으로 승부수를 던진 그라비티의 미국현지법인을 방문해 성공의 비결과 에로사항, 향후의 과제 등에 대해 자세히 들어봤다.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2006.11a
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• pp.289-289
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• 2006

• 프린팅코리아
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• s.17
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• pp.98-101
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• 2003

21세기 디지털 패러다임은 우리 기업으로 하여금 '한강의 기적'에 이어 '디지털 신화'라고 하는 새로운 '기적'을 향해 나아가도록 몰아붙이고 있다. 어떻게 이러한 기적을 이룰 것인가. 소니(Sony)를 추월해 세계를 놀라게 한 삼성전자의 사례를 통해 그 가능성을 타진해 보자. 지난해 <뉴스위크>, <포브스> 등 유수 언론들은 삼성전자의 눈부신 성장을 대서특필했다. 세계 초일류 브랜드의 상징으로 글로벌 시장을 석권했던 소니를 삼성전자가 앞섰다는 점을 집중부각하면서, 소니가 아날로그 시대의 강자였다면 삼성전자는 디지털 강자라고 평가했다.