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검색결과 634건 처리시간 0.028초

도자기용 단가마에서 CO2분석기를 사용한 효율적 소성방법 연구 I. 도자기 유약개발에 관한 연구 (Efficient Firing Using CO2 Analyzer in Single Ceramic Kilns Part I. Development of Ceramic Glazes)

  • 한상목
    • 산업기술연구
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    • 제3권
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    • pp.65-68
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    • 1983
  • There are chief concerns every ceramist must keep in mind when firing a single kiln : Being able to read and control the kilns temperature as the firing progresses and as the kiln cools after firing. Controlling the atmosphere of the kiln in order to create desired glaze and clay body effects. Getting the most efficient use from the fuel-the most heat possible from the least fuel possible. The more exactly, author can control these factors with some result.

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Undercut양에 따른 Clasp유지력의 비교연구 (AN EXPERIMENTAL STUDY ON RETENTIVE CAPACITIES OF CLASPS CHANCED BY THE DIFFERENT AMOUNTS OF UNDERCUT)

  • 이호용
    • 대한치과보철학회지
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    • 제25권1호
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    • pp.243-252
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    • 1987
  • The purpose of this experimental study is to investigate the relationship between the retentive capacity of clasp and the different undercuts. The author measured the retentive power of Aker's clasp and I-bar clasp of chromium cobalt alloy and gold alloy, varying the undercut depth of 0.125mm, 0.25mm and 0.5mm, and then analyzed statistically. The results were followings. 1. The retentive capacity of chromium cobalt alloy clasps were almost twice as much of gold alloy in each undercut. 2. The retention power of I-bar clasp were higher than Aker's clasp in each undercuts. 3. Increasing the depth of undercut in 0.125mm, 0.25mm and 0.5mm, the clasps did not always exert the multiple amount of the retentive power.

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수산동물육에 관한 연구 (I) -제주도산 어패류의 무기성분에 대하여- (STUDIES ON THE MUSCLES OF MARINE ANIMALS ( I ) CONTENTS OF INORGANIC SUBSTANCES IN THE MUSCLES OF FISH AND SHELLFISH FROM CHEJU ISLAND)

  • 하봉석
    • 한국수산과학회지
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    • 제7권4호
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    • pp.229-233
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    • 1974
  • 1. 옥돔, 자리돔, 전복의 육질에 대한 무기질 성분을 정량하여 Table. 3과 같은 결과를 얻었다. 2. Copper, Phosphorus, Iron, Sodium, Calcium의 함량은 자리돔(정어), 옥돔(저어), 전복(패류)간에 뚜렷한 함량차이가 인정된다. 끝으로 이 실험은 1972연도 문교부 학술 연구 조성비로서 실시하였으며, 실험을 하는데 지도와 협조를 하여 주신 필현 교수와 허 종화 교수에 감사하는 바이다.

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개인용 컴퓨터에 의한 방사선기술학 논문의 검색 및 데이터베이스 구축에 관한 고찰 (A Study on Retrieval of Article and Making Database in Radio Technology with Personal Computer)

  • 김성환
    • 대한방사선기술학회지:방사선기술과학
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    • 제20권1호
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    • pp.85-90
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    • 1997
  • Although many useful arfticles appear in the journals published in Korea, they are not always cited by researchers mainly due to absence of efficient searching system. The author made a program with 4 predefined filtering forms to detect published articles rapidly and accurately. The program was coded using database management system CA-Clipper VER 5.2. I used 486DX-II (8 Mbyte Ram, VGA, 560 Mbyte Hard Disk), desk-jet printer(HP-560k), and MS-DOS VER 5.0. I inputed twenty articles in the journal of Korean Society Radiotechnological Technology. And this program test for retrive article and made database.

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천측계산의 전산화에 관한 연구(I) (A Study on Computerization of the Sight Reduction(I))

  • 윤여정
    • 한국항해학회지
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    • 제8권2호
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    • pp.1-13
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    • 1984
  • This paper concerns computerization of the altitude correction in the sight reduction process. To obtain observed altitude, the factors such as refraction, parallx, semidiameter, phase etc, are corrected to sextant altitude. The factors are the arguments into the nautical almanac table from which are extracted values to add to or substract from the raw sight to obtain corrected value. If the altitude correction is to be done by sophisticated calculator, each factors must be formulated. The author studies the formulation of above factors, and simply from the date and ephemeris time of the sighting calculate the values of the factors. The calculated values are compared with that from nautical almanac, and it is confirmed that the formulae are practically used.

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Evaluation of Multicenter Multielectron Integrals Using One-range Addition Theorems in Terms of STOs for STOs and Coulomb-Yukawa Like Correlated Interaction Potentials with Integer and Noninteger Indices

  • Guseinov, I. I.
    • Bulletin of the Korean Chemical Society
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    • 제30권7호
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    • pp.1539-1542
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    • 2009
  • Using one-range addition theorems for Slater type orbitals (STOs) and Coulomb-Yukawa like correlated interaction potentials (CIPs) introduced by the author, the series expansion formulae are derived for the multicenter multielectron integrals. The expansion coefficients occurring in these relations are presented through the overlap integrals of two STOs. The convergence of series expansion relations is tested by calculating concrete cases. The accuracy of the results is quite high for quantum number, screening constants and location of orbitals. The final results are especially useful in the calculation of multielectron properties for atoms and molecules when Hartree-Fock-Roothaan (HFR) and explicitly correlated methods are employed.

小兒斜視 10例의 臨床的 硏究 (A Clinical Study of Ten Cases of Strabismus in Children by Oriental Medicine)

  • 김중호
    • 한방안이비인후피부과학회지
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    • 제8권1호
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    • pp.133-142
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    • 1995
  • The author performed in 10 cases under the age of 13 years who were visited to hospital from July 1994 to July 1995. I have assessed information such as type of deviation, detected time of strabismus, past history, family history. The most of patient were esotropia. I have experienced good improvement to recover strabismus by the Oriental Medicine. The acupuncture points of B2, TE23. S1, G14, E36 were mainly used. Herbal medicine was treated GAMIBOJOONGYKGI-TANG. It was supposed to encourage digestive system and to continue elastic capacity. From the results of this study, it is effective to change of correct position at the deviational eyeball and to treat amp1yopia with strabismus. It was reported possble to treat strabismus without operation and glasses.

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Smart Solid State Syntheses of Well-Crystallized Phase Pure Mixed Oxides for Electroceramics

  • Sennat, Mamoru
    • 한국세라믹학회지
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    • 제43권11호
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    • pp.680-687
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    • 2006
  • An overview is given to optimize the solid state processes toward phase pure and well-crystallized fine particulates of mixed oxides, serving as electroceramic materials in various genres. Elevation of the reactivity and preservation of stoichiometry of the starting mixture are of universal importance. Mechanical activation is versatile for these purposes, particularly when an oxygen atom as a hinge promotes formation of hetero-bridging bonds between dissimilar cationic species prior to calcination. Case studies carried out recently in the author's laboratory are displayed and compared for ferroelectric materials, i.e. $PbMg_{1/3}Nb_{2/3}O_3$ $xPbTiO_3$(PMN-PT), $(1-y)Pb(Zn_xMg{1-x})_{1/3}$ $yNb_{2/3}O_3$ (PZN-PMN), $BaBi_2Ta_2O_9$ (BBT), $Ba(Mg_{1/3}Ta_{2/3})O_3$ (BMT), and ferromagnetics, i.e. M-, Y-, and Z-phases of Ba-hexaferrites.

Problems of Gender Parity in the State Administration System: Conceptual and Empirical Aspects

  • Kireieva, Zoia;Sardaryan, Karinna;Voytsekhovska, Yuliya;Britchenko, Igor;Samoilenko, Viktoria;Popova, Yuliia
    • International Journal of Computer Science & Network Security
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    • 제22권2호
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    • pp.369-375
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    • 2022
  • The article is timed to coincide with the thirtieth anniversary of Ukraine's independence. Based on the generalization of fundamental and applied studies of scientists, the author's vision of such category as the gender parity is conceptualized. Based on the analysis of historical events related to the development of the state, the formation of cultural and social values in determining the gender identity of modern society is substantiated. Based on the analysis of literary and regulatory sources, the structure of the state administration of Ukraine is visualized, which has become the basis for the diagnosis of gender aspects. Based on the analysis, the problems of gender parity in the public administration system of Ukraine are identified.

Determining the Relative Importance of Quality Dimensions Using the Kano Model and IPA

  • Hae-Geun Song
    • 한국산업융합학회 논문집
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    • 제27권4_1호
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    • pp.759-769
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    • 2024
  • The Kano model, a two-dimensional quality theory, is widely used as a useful tool for measuring potential customer requirements by utilizing the concept of the Potential Customer Satisfaction Coefficient (PCSC). There is growing evidence that the PCSC, comprising the Potential Satisfaction Coefficient (PSC) and Potential Dissatisfaction Coefficient (PDC) and utilizing Kano's four quality dimensions (A, O, M, and I), can be particularly useful in determining the relative importance of quality characteristics in IPA. Despite prior studies utilizing the PCSC concept for characterizing importance, attempts to determine the relative significance among quality dimensions have been relatively scarce. This study aims to use PCSC and IPA to demonstrate which quality dimension is more significant than the others. The author analysed 32 Kano related articles, encompassing 34 cases, using IPA. The results indicate that the proposed equations are valid for assessing characteristic importance, with O or M is perceived as more important than A or I.