市販試視力表와 韓式新試視力表의 正確度

韓天錫 大韓眼科學會 1967 大韓眼科學會雜誌 Vol.8 No.1

홍익인간의 문헌자료 비교 고찰

한용진 한국교육사학회 1993 한국교육사학 Vol.15 No.-

This study is to make clear and identify the meaning of Honglk-Ingan. In this study, all the literatures an the history of Tankun which include the word of HongIk-Ingan were divided into three patterns: the literatures of Confucian or toadyism, that of Buddhism, and that of nationalism. In which I dealed with the six literatures and divided it as three types. Six literatures are Taepaek-Ilsa, Samsungki vol. Ⅱ, Samkuk-Yusa, Samsungki vol. Ⅰ, Jewang-Woonki, and a true record of the Yi dynasty's King Sejong. Especially, the first three literatures have a strong resemblance even though the two are the literatures of nationalism and the other one is that of Buddhism. As a conclusion, I insist that Honglk-Ingan means the ruling philosophy of Hahn-In and Hahn-Woong not of Tangun. And it is also the spirit of loving all human beings and the actural practice of education from generation to generation.

Amazon’s Distribution Strategy: Doing the Right Things

Hahn,Yoonah,Youn,Myoung-Kil,Kim,Dongho 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-

The purpose of this paper is to analyze and illustrate Amazon’s distribution strategy and its success. This paper examines Amazon’s distribution strategy to demonstrate the importance of distribution strategy to the success and sustainability of its organization. The analysis indicates that the distribution strategy, including technology, shipping, and distribution infrastructure, is the most vital factor for the success of Amazon. Recognizing the importance of distribution systems, constantly innovating convenient and on-time delivery methods, and taking control of inventory and shipping activities have separated Amazon from its competitors and led Amazon to establish many different types of fulfillment facilities all over the world. Given Amazon’s continued growth that came with its constant strive for delivery and cost efficiency and customer satisfaction, it was inevitable that Amazon would eventually venture into the actual shipping business and emerge as the competitor of the traditionally well-known shipping companies such as DHL, FedEx, and UPS. The previous and current Amazon’s distribution strategies demonstrate that Amazon will continue to focus on developing and implementing new and creative distribution strategies to separate itself from the rest of the retail and e-businesses.

악성 갑상선 우연종의 임상상 및 초음파 소견의 진단적 가치

강한욱,김광원,이병완,강보현,김형훈,김범진,정재훈,민용기,이명식,이문규 대한내분비학회 2002 Endocrinology and metabolism Vol.17 No.5

연구배경: 최근 갑상선 초음파 검사의 빈번한 시행으로 갑상선 우연종의 발견이 증가하고 있다. 이러한 갑상선 우연종은 임상적으로 어떻게 접근하고 치료를 해야 하는지 적지 않은 문제가 되고 있다. 본 연구에서는 직경 1.5㎝ 이하의 갑상선 우연종의 유병률, 입상적 특징 및 초음파 특성, 그리고 가장 효율적인 진단적 접근에 대해 알아 봤다. 방법: 1999년 1월부터 2000년 12월까지 삼성서울병원 내과 및 일반외과로 갑상선 결절을 주소로 내원한 1457명을 대상으로 후향적 연구를 시행하였다. 우연히 발견된 직경 1.5㎝ 이하의 갑상선 결절을 가지는 환자들에서 갑상선 결절의 촉지 유무, 갑상선 기능검사, 항갑상선 항체, 갑상선 초음파 및 미세침 흡인세포검사, 99m^Tc 갑상선 스켄, 수술 조직검사 및 병기를 검토하였다. 결과: 분석한 갑상선 결절 1475예 중 갑상선 우연종의 유병률은 13.4%(198예)였다. 갑상선 우연종에서 악성률은 28.8%(57예)으로 나왔다. 양성 및 악성 갑상선 우연종에서 나이, 성별, 갑상선 기능검사, 결절 크기에는 의미 있는 차이는 없었다. 갑상선 스켄은 갑상선 우연종의 감별에 적합하지 않았다. 갑상선 결절의 초음파 지표 점수만이 양성 및 악석 갑상선 우연종의 감별에서 초음파 지표 점수의 민감도는 88.9%, 특이도는 74.4%, 양성 예측률은 92.4%로 나왔고 진단적 정환도는 85.5%였다. 갑상선암으로 수술을 받은 50명중 stage 1은 34명, stage 2는 6명, stage 3은 10명으로 대부분의 악성 갑상선 우연종은 낮은 TNM 병기로 나타났으나, 상당수에서는 국소 침범의 소견을 보였다. TNM 병기의 3기 환자 전부는 45세 이상이였고, 주로 갑상선암의 피막 침범에 의한 것이었다. 임파절 전이는 6명의 환자에서 나왔다. 결론: 악성 갑상선 우연종은 비교적 흔히 접할 수 있는 질환이며 양성 우연종과는 임상적으로 구별이 안 된다. 악성 갑상선 우연종은 발견 당시 대부분 낮은 병기이나, 갑상선의 피막 침범 및 임파절 전이가 상당수에서 발견되었다. 갑상선 우연종의 초음파 소견은 향후의 진단 방향을 제시하는 중요한 길잡이가 될 수 있다. 초음파 지표 점수 2점 이상의 갑상선 우연종에서만 초음파 유도 미세침 흡입검사를 권장한다. Background: High-resolution ultrasonography has made the detection of asymptomatic small thyroid possible. Recent increases in the detection of incidentalomas have created a clinical dilemma on how to properly manage such incidental nodules. We investigated the prevalence, clinical and ultrasonographic characteristics, and optimal diagnostic approach toward incidentally detected benign and malignant thyroid nodules of less than 1.5㎝ in size. Methods: A retrospective review was undertaken on the 1,475 patients who had visited Samsung Medical Center, Seoul Korea between January 1999 and December 2000. The review consisted of a physical examination of the thyroid gland, thyroid function test, antithyroid antibodies, thyroid ultrasonography, fine-needle aspiration biopsy, pathology and TNA staging of the incidentally detected thyroid nodules of less than 1.5㎝ in size. Results: The prevalence of thyroid incidentalomas was 13.4% and the malignancy rate within them was 28.8%. There were no significant differences in age, sex, thyroid function test and size between the benign and malignant incidentalomas. Ultrasonographic characteristics showed meaningful diagnostic value for the detection of malignancy in incidentalomas. Most malignant incidentalomas were of a low stage. Conclusion: Occult thyroid cancers are fairly common finding. There are no clinical difference between benign and malignant thyroid nodules less than 1.5㎝; however, ultrasonographic findings can be used to decision of optimal management strategies (J Kor Soc Endocrinol 17:649∼656, 2002).

Quark Model의 群論的 背景에 關한 硏究

洪翰植 慶北大學校 1977 論文集 Vol.23 No.-

Elementary particle physics has made a long stride scince the introduction of the quark model, but it has many theoretical liabilities yet. This paper gives brief survey of the group theoretical back-ground of the theory, and looks forward for the improvement of the mathematical methods.

흰쥐에서 출혈량에 따른 비장세포 증식력과 말초임파구 아형의 변화

이한식,정성필,김욱진,조영순,장석준 대한응급의학회 2000 대한응급의학회지 Vol.11 No.3

Background: Hemorrhage itself has been shown to produce abnormalities in immunity, particularly depression of the lymphocyte function. In order to better examine the amount of hemorrhage required to suppress the lymphocyte function, we determined the effect of graded fixed-volume hemorrhage on splenocyte proliferation and the lymphocyte subpopulation. Methods: Male Sprague-Dawley rats(weight,350∼400 g) were anesthetized, subjected to hemorrhages of 7.5 ㎖/㎏, 15 ㎖/㎏, and 22.5 ㎖/㎏ by percutaneous cardiac puncture with ㎖/㎏ needles, After 1, 2, 4, and 7 days, animals were killed to obtain the blood and spleen. The splenocyte proliferative capacity was measured by using the tritiated thymidine incorporation technique, and the peripheral lymphocyte subpopulation was determined using flow cytometry with the following monoclonal antibodies: T cell(CD3+), T helper cell(CD4+),7 cytotoxic cell(CD8+), and B cell(CD45RA+). Results: Hemorrhage of 7.5 ㎖/㎏ did not induce depression of splenocyte proliferation. However, for hemorrhage greater than 15 ㎖/㎏, the splenocyte proliferative capacity was significantly depressed at 2 days after hemorrhage and recovered at 4 days. Hemorrhage induced no changes in the relative percentage of lymphocyte subpopulations and in the number of each cell in peripheral blood. Conclusion: This study suggests that cellular immunity is depressed at 48 hrs after a hemorrhage greater than 15 ㎖/㎏ without any change in the peripheral lymphocyte subpopulation.

서비스 産業의 6시그마 構策

한한수 경희대학교 사회과학대학 1999 社會 科學 論叢 Vol.17 No.-

時空構造에 關한 考察

洪翰植 慶北大學校 1965 論文集 Vol.9 No.-

In deriving Einstein's fundamental equation of gravitation, R_μν-1/2 g_μνR=-KT_μν, firstly a brief survey of important tensor relations is given. Secondly Einstein's curvature tensor R_μν, curvature scalar R=g^μνR_μν and scalar density √-gR are introduced, and the Hamiltonian derivatives δ(√-gR)/δoj^ik, δ(√-gR)/δg^ik, δ(√-gR)/δg_ik are sought. It was shown that their invariant divergences vanish. On the other hand the "energy tensor of matter" T_μν which combines the enrgy density of the electromagnetic field and that of ponderable matter was introduced, and it was shown that the divergence of the corresponding mixed tensor vanishes. In analogue of Poisson's equation, these two quantities were equated. Lastly the important implications of this equation were enumerated.

미국미술의 다양성에 관한 연구 : 1994-95년도 New York 지역을 중심으로

朴漢鎭 서울市立大學校 1996 論文集 Vol.30 No.-

American art has a diversity. I can confirm it on viewing 17 exhibitions held in the New York area in 1994-95. And I make an analysis of it focusing on affinity, experimentation and conservatism of the art world. American art is vigorous throughout the country on account of the affinity between artist, populace, critic and museum(gallery). There are various supporting system to the art, for example, the national endowment for the arts, art foundation and patron etc. Non-profit and profit galleries are centers of art activities. There is experimentation of art on a diversity. First of all American art constantly persue the meaning of the human body. The body seems to be expressed an actual proof without spiritual significances. Another experimentation is also possible to develop incessantly a new plastic form. It is exemplified in the case of Ma가 Tansey's <representation> and <pseudorealistic imitation> of Peter Fischli and David Weiss. The exclusive mindedness comes into question in the republic of American art critics. It is undesirable to make an issue of the <third world> tradition at the works of Byron Kim owing to his native Korean parents. This is a case of prejudice anainst the minority in order to make a discrimination between two art world. American art is different from ours. The <others> is mixed in <ours>. We must understand clearly the truth and false of the diversity in American art. The presence of the <others> serves as a momentum to discover and develop the <ours>.

Covariant Harmonic-oscillator 波動函數의 直交關係

洪翰植,金英子 慶北大學校 文理科大學 1978 文理學叢 Vol.5 No.-

Orthogonality relations for the Kim-Noz covariant harmonic-oscillator wave function are discussed. It is shown that the wave functions belonging to different Lorentz frames satisfy an orthogonality relation. That is Φ_0^n(x)Φ^n'_η(x)d^4x=σ^nn'(1-β^2)^n+1/2 can be given following physical interpretalion: If η=0, the inner product becomes the three-dimensional inner product of non-relativistic quantum mechanics. If η≠0, this means that the rest-frame wave function should see the Lorentz contraction.