시간의 흐름에 따른 핸드폰의 품질동태성에 관한 연구

윤성필(Sung-Pil Yoon),임성욱(Sung-Uk Lim),박만희(Man-Hee Park),조인희(In-Hee Cho) 한국엔터테인먼트산업학회 2010 한국엔터테인먼트산업학회논문지 Vol.4 No.3

본 연구는 선행연구에서 조사된 핸드폰의 고객요구속성을 Kano 모델의 품질특성에 적용하여 시간의 흐름에 따라 어떤 변화가 있는지를 살펴보고자 한다. 또한 고객들의 새로운 요구속성이 나타났는지도 함께 살펴보고자 한다. 많은 문헌과 선행연구에서 나타나고 있는 시간에 따른 품질특성의 이동이 매력적 품질에서 일원적 품질로 일원적 품질에서 당연적 품질로 변화하는 진부화(陳腐化)현상이 나타나는지도 함께 살펴보고자 한다. In this study, previous research (Sung-Uk Lim, 2004) surveyed in customer demand for mobile phones the quality characteristics of properties applied to the Kano model, the flow of time, depending on whether any changes will be discussed. In addition, our customers" new requirements will be examined along with the property map appeared. The movement of time-dependent quality characteristics appeared in many previous studies Obsolescence Phenomenon - from Attactive Quality Element to One-Dimensional Quality Element, from One-Dimensional Quality Element to Must-Be Quality Element - may appear be examined together.

석골재자원 개발을 위한 균열제어 발파모델 연구

임한옥,김재동,김종훈,백승규 강원대학교 석재복합신소재제품연구센터 1998 석재연 논문집 Vol.3 No.-

본 연구에서는 석골재 자원개발에서 널리 사용되고 있는 발파 조건을 고려하여 암반의 변형 및 파괴거동에 대한 특성을 규명하기 위한 컴퓨터 모델링을 시도하였다. 현재까지 이루어진 몇몇 연구들은, 발파에 의한 암반의 거동을 실제 동하중이 적용되고 있는 상태와는 달리 정적 상태 하의 조건에서 주로 이루어져 왔다. 그러나 실제 발파 거동은 동적 거동을보이므로 동역학적 해석을 하지 않을 경우 많은 오차를 포함한 상태하의 개괄적인 특성의 추정에 그칠 수밖에 없는 단점을 지니고 있었다. 본 연구에서는 동하중 하에서의 탄소성 해석을 실시하여 채석시 발파 하중에 대한 암반의 하중 반응, 탄성 및 소성 변형의 발생 특성, 그리고 이로 인한 발파 균열의 성장 전파 특성을 규명함으로써 발파로 인한 균열의 능동적 제어와 보다 효율적인 발파가 이루어 질 수 있는 조건들을 규명하고자 하였다. 해석 결과 일반 발파공의 경우에서 탄성 모델의 경우 공반경의 약 3배인 6cm까지 집중된 응력의 크기가 파괴강도를 초과하는 것으로 나타났으며, 탄소성 모델의 경우 균열의 전파 거리는 공반경의 15배인 30cm까지 균열이 확장되었다. 또한 폭 5mm 길이 20mm의 노치가 가공된 발파공의 경우 공반경의 25배인 50cm까지 균열이 진전되었으며, 균열의 방향은 노치 첨단의 방향으로 생성되는 것을 알 수 있다. 노치의 폭과 길이에 의한 영향은, 폭은 10mm이하일 경우가 적합하다고 판단되며, 길이는 균열의 성장 길이에 비례하는 경향이 있는 것을 알 수 있었다. Conditions for developing an effective controlled blast model were studied using finite element method, analyzing elastic and elasto-plastic case under static and dynamic load for normal blast hole and notched blast hole. Results show that from the elastic analysis of normal blast hole with 2 cm radius, stress concentrated by blasting exceeds tensile strength for the region up to 6 cm from hole wall and in case of elasto-plastic analysis, it was expanded up to 30 cm. For the notched blast hole with its width of 5mm and length 20mm, crack due to blasting was propagated up to 50 cm.

광산 폐석의 알칼리 반응성에 대한 광물.암석학적 연구

임한욱,최성범,백환조,김덕현 강원대학교 석재복합신소재제품연구센터 1997 석재연 논문집 Vol.2 No.-

석회암을 이용한 골재의 알칼리 반응성을 측정하기 위하여 한국공업규격의 표준시험 방법에 의한 팽창성을 측정하였다. 기존의 연구결과에 의하면 특히 백운석을 포함하는 석회암의 경우 골재-알칼리 반응이 상당한 것으로 알려지고 있으나, 본 연구에 사용된 석회암 시료의 경우는 알칼리 반응성이 매우 작은 것으로 나타났다. 또한, 역학적 특성의 결과도 매우 양호하며 골재로서의 활용성이 충분한 것으로 판단된다. An experimental program was undertaken to investigate the alkali-aggregate reaction of limestone aggregates, following the standard testing method for potential alkali reactivity of carbonate rocks for concrete aggregates. It is generally known tat dolomitic limestones may exhibit high potential of alkali-aggregate reaction. However, the limestone samples employed in this study showed negligible effect of the alkali reaction, even with substantial dolomite content. It is also concluded that the mechanical properties of the limestone aggregates are adaptable for concrete aggregates

心臟組織 S-Adenosyl-L-Methionine : Protein-Carboxyl O-Methyltransferase에 關한 硏究 Protein-Carboxyl O-Methyltransferase from Bovine Heart

林圭,郭相太,黃炳斗,張億奎 충남대학교 의과대학 지역사회의학연구소 1986 충남의대잡지 Vol.13 No.2

S-Adensoyl-L-methionine : Protein-carboxyl O-methyltransferase (E.C. 2.1. 1.24, protein methylase Ⅱ) was purified from bovine heart approximately 13,100-fold with a 17% yield by combination of ammonium sulfate precipitate, Sephadex G-75 chromatogrphy, S-adenosyl-L-homoeystein-sepharose 4B chromatography and hydroxyapatite chromatography, and then its properties and physiological roles were investigated. 1. The purified enzyme appeared single protein band by SDS/polyacrylamide gel electrophoresis. 2. The enzyme showed a pH optimum around 5.8-6.4. It was heat labile, inactivated by heat-treatment for 10 minutes at 60℃, and when stored at-20℃ in the presence 10% glycerol, approximately 40% of its activity has been lost in a year. 3. Copper ion (Cu^2+) was a potent inhibitor, the activity being inhibited upto 85% at 2mM and the inhibition was recovered 25% of its activity by addition of 4mM EDTA, and ferrous ion (Fe^2+) also inhibited up to 40% at 2 mM. The other ions did not almost inhibit. 4. The apparent Km value for S-adenosyl-L-methionine was 5×10 ∧(-6) M and kinetic analysis of the enzyme in the presence of 0.125 mM copper ion showed that the nature of the inhibition to the enzyme was uncompetitive, considering that Km and Vmax were decreased. 5. Histone IIA, immunoglobulin G and histone H3 were relatively good substrates for the enzyme. 6. The enzyme activity was completely inhibited by 0.5 mM of p-hydroxymercuribenzoic acid, but all of the activity was recovered in adding 10 mM mercaptoethanol. 7. The molecular weight of the enzyme was 24,000. 8. The methylate calmodulin inhibited about 20% of Ca^2+-calmodulin-induced activation of phosphodiesterase, compared with that of nomethylated calmodulin 9. Methylation rate of calmodulin was constant, independent of Ca^2+ -presence, and Ca^2+ -calmodulin-induced activation of phosphodiesterase by methylated calmodulin was completely inhibited in the presence of 1 mM EGTA. 10. The binding of calmodulin to TNS was inhibited by the methylation of calmodulin. 11. Ventricular plasma membrane was a good substrate for this enzyme and ^3H-CH_3 group was incorporated to 6 protein bands (M. W. : 100,000, 41,000, 22,000, below 14,000 etc) on SDS/polyacrylamide gel electrophoresis. 12. Phosphorylation of plasma membrane by endogenous protein kinase occurred in the protein of molecular weight 100,000 41,000, 22,000, below 14,400 and amomg these molecular weight 22,000 was strongly phosphorylated. 13. Endogenous cAMP-dependent phosphorylation was inhibited by carboxylmethylation of plasma membrane. These results suggest that protein methylase Ⅱ may play some role to regulate Ca^2+ -calmodulin-induced activation of phosphodiesterase and endogenous cAMP-dependent phosphorylation of plasma membrane.

제조부문의 6시그마 개선도구 사용에 관한 연구

이상근,임성욱,박영택 한국경영과학회 2003 한국경영과학회 학술대회논문집 Vol.- No.1(1)

6시그마가 소개된 이후 우리나라에서는 6시그마 추진 단계별로 많은 품질개선도구를 기업에서 사용하여 왔다. 그러나 지금까지 많은 품질개선도구들이 언제, 어떠한 도구들을 사용되는 것이 좋은 것인지 명확히 정의하지 못하였다. 본 연구는 MBB와 BB를 대상으로 6시그마 프로젝트를 시행하면서 사용하였던 도구의 사용시기와 사용성과를 설문조사하여 제조분야에서 6시그마 추진 단계별로 사용해야 할 도구를 제시하였다.

암반내 A.E 계측 자료의 처리를 위한 신경 회로망의 적용성 연구

이상은,임한욱 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.A

To determine the source location of acoustic emission in rock, the least square method has been used until lately but it needs much time and efforts. In this study, neural network system is applied to above model instead of least square method. This system has twenty seven input processing elements and three output processing element. The source locations calculated by above two methods are similarly concordant. The new method using neural network system is relatively simple and easy for calculating source location compared with traditional method.

조명광원의 색온도와 조도 및 스펙트럼 측정

최대욱,박성진,임춘우,석성수,오철한 慶北大學校 師範大學 科學敎育硏究所 1999 科學敎育硏究誌 Vol.23 No.-

The peak wavelength and temperatures of W-Halogen standard light source were measured by using the modified Wien's Law. In the case of graybody, the emissivity ε should be taken into account in using the Wien's Law. In the experiment, PDA spectroscope was used for the measurement of peak wavelength of intensity distribution of spectrum. As the current of light source increases from 5A to 7.4A, the peak wavelength of intensity distribution of the spectrum decreased from 717nm to 690nm, and temperature increased from 3127K to 3330K. Illuminations of three-wavelength lamps and light source were also measured. It was found that irradiation spectrum of those three-wavelength lamps are not coincident to blue(450nm), green(550nm) and red(610nm).

근로자의 화학물질 노출관련 기록 보존에 관한 연구

오상민 ( Sang Min Oh ),박동욱 ( Dong Uk Park ),유성재 ( Seoung Jae Yu ),정진우 ( Jin Woo Jung ),임경택 ( Kyung Taek Lim ),이재환 ( Jae Hwan Lee ),하권철 ( Kwon Chul Ha ) 한국산업위생학회 2013 한국산업보건학회지 Vol.23 No.4

Objectives: Employee exposure record refers to a record containing information about environmental(workplace) monitoring or measuring of a toxic substance or harmful physical agent. The aims of this study were to examine problems related to exposure records and provide some amendments to the Korean Industrial Safety & Health Act for the effective management of chemical substances under the law. Methods: This study performed a literature search and review on legal provisions related to exposure records of a number of different countries, including Korea, the USA, Japan, EU, Germany, and the UK. They were compared and investigated and the amendment of articles was suggested. Results: The results of this study were provided as suggested amendments to the related act. There were a variety of ways of improvement, including a 30-year retention period and the introduction of new access methods, contents, transfer, and maintenance methods. All exposure data elements have to be standardized, including reference to a similar exposure group(SEG), sampling strategy, and circumstances of exposure(e.g., date, shift length, use of personal protective equipment, etc.). The SEGs are described by process, job, task, and environmental agent. Conclusions: This study is expected to provide for the amendment of the related act in order to ensure effective management of exposure records and is helpful for solving the cause and result of occupational disease by keeping exposure records according to the Industrial Safety & Health Act.

문양콘크리트의 광택화에 따른 성능평가의 관한 실험적 연구

김재은,조상영,임남기,정재욱,정상진 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

Contemporary, architecture calls for a wide range of surface textures and treatments. A surface compatible with the architecture's design may vary from a glass-smooth finish to one requiring special sculptured ornamentation. These surface require many different types of form sheathing and lining. The purpose of study development new design form and made elaborateness shape. Easy to used in field that architecture finish material not used expect effective reduce of working hours, personnel expenses, architecture finish material, cost, through this study, we have figured out the best mix proportion for durability and gloss ability of glossing exposure concrete.

심방조동과 특발성 심실빈맥 환자의 의식소실을 위해 사용한 Propofol 에 의한 정상 동성리듬으로의 전환

김태정,이춘수,이홍식,차영덕,정종권,임현경,이성근,한정욱,허이희 대한마취과학회 2002 Korean Journal of Anesthesiology Vol.42 No.2