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양당리굴내 생성물의 분포 및 특성

  • 오종우
    • Proceedings of the Speleological Society Conference
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    • 2002.11a
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    • pp.19-30
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    • 2002
  • 카르스트 지형과 관련된 동굴생성물(Speleothems)의 발달과정은 [그림 1]에서 요약되어 있듯이 일정한 규칙의 발달과정을 거치면서 형성되는 동굴수문학적 (Speleo-hydology)인 속성을 가지고 있다(Ford, 1989). 동굴생성물은 주로 기반암으로부터 침식되는 용해물질에 의하여 다양한 생성물을 제공하거나 외부 하천의 유입에 따른 외래산 퇴적물질 등이 상호 교차되어 집적되어있다. (중략)

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Aaerodynamic design of advanced concept car (고급개념 자동차의 공기역학설계)

  • 정인석;김현우
    • Journal of the korean Society of Automotive Engineers
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    • v.10 no.6
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    • pp.13-24
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    • 1988
  • 본 해설에서는 공기저항을 감소하기 위하여 위에서 열거한 점들을 고려한 공기역학적인 연구를 행함으로써 항력계수를 0.153까지 낮게한 Ford사의 프루우브IV 개발과 그 결과에 대하여 서술하고자 한다. 우선 일반적인 공기역학적 설계를 위한 연구에 대하여 서술하고 풍동실험을 반복한 결과로 보완된 부분에 대하여 설명한후 최종적인 차에 대한 풍동실험 결과를 서술하는 순서로 한다.

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SECOND BEST TEMPORALLY REPEATED FLOWS

  • Eleonor, Ciurea
    • Journal of applied mathematics & informatics
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    • v.9 no.1
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    • pp.77-86
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    • 2002
  • Ford and Fulkerson have shown that a stationary maximal dynamic flow can be obtained by solving a transhipment problem associated with the static network and thereby finding the maximal temporally repeated dynamic flow. This flow is known to be an optical dynamic flow. This paper presents an algorithm for second best temporal1y repeated flows. A numerical example is presented.

A Study of Multiplex RE Monitoring Method of Low-Price for Stand-Alone PV Power Generation System (독립형 태양광 발전 시스템을 위한 저가의 다중 무선 모니터링 기법에 관한 연구)

  • Oh Jin-Seok;Kwak Jun-Ho
    • Journal of Advanced Marine Engineering and Technology
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    • v.29 no.5
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    • pp.579-586
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    • 2005
  • Recently, it has demanded to the wireless monitoring system in stand-alone PV power generation system. We propose the multiplex monitoring method using RF unit of low-price. RF unit consists of RF modem and communication controller. It is also able to use by repeater to communicate long distance. In this paper. two algorithms were programmed by CCS-C and C++ for multiplex monitoring method, The algorithm of choosing unit was used 'select and poll method' and the course assignment algorithm was embodied with 'Bellman-Ford algorithm'. The good result was achieved in the actual test without communication-data lose. The proposed method will be applied such as monitoring system of PV light on the wayside, monitoring system of unmanned lighthouse, monitoring system of refrigeration container on vessel and so on. It can be applied in the field that various ocean energy system.

Fabrication of Double-layered Porous Materials (이중 기공구조를 갖는 다공질체의 제조)

  • Yun, Jung-Yeul;Kim, Hai-Doo;Park, Chun-Hong
    • Journal of the Korean Ceramic Society
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    • v.39 no.10
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    • pp.919-927
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    • 2002
  • In order to fabricate double-layered porous materials powders of different particle sizes were pressed stepwise. Ford's equation which predicts the fired density with the change in pressed density was employed in order to adjust the difference in sintering shrinkage of the green body with double-layered porous structure. Double-layered porous materials were characterized by investigating microstructures and permeability. SEM micrographs showed the distinct difference in pore sizes of double-layered porous material. Permeability of single-layered porous material increased by increasing the starting particle sizes and porosity as well. Permeability of the double-layered porous material depends largely on the layer of small pore diameter.

Differential Pulse Polarographic Studies on the Mixed Ligand Complexes of Cadmium-Oxalate-Citrate Systems (카드뮴-Oxalate-Citrate계의 혼합 리간드 착물에 대한 미분펄스폴라로그라피적 연구)

  • Se Chul Sohn;Tae Yoon Eom;Jung Key-Suk
    • Journal of the Korean Chemical Society
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    • v.33 no.6
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    • pp.596-600
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    • 1989
  • The simple and mixed ligand complexes of cadmium-oxalate-citrate systems have been studied with differential pulse polarography at 25${\circ}$C, in the solution with constant ionic strength, ${\mu}$= 1.0 ($NaNO_3$) and pH 8.0. Using the graphical methods by DeFord-Hume and Schaap-McMasters, the overall stability constants for the mixed ligand complexes, $\beta_{ij}$, were found to be: $log\beta_{11}$ = 4.91, $log\beta_{12}$ = 4.99, and log $log\beta_{21}$ = 5.18, respectively. Various equilibria involved in the mixed system have also been discussed.

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Clinical Effects of ByeolGab Pharmacopuncture for Primary Headache in Three Case Reports (원발성 두통에 대한 별갑약침의 임상적 효과 3례 보고)

  • Hwang, Yun-kyeong;Kim, Won-ill;Kim, Koang-lok
    • The Journal of Internal Korean Medicine
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    • v.38 no.5
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    • pp.834-841
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    • 2017
  • Objectives: To report the clinical application and effects of ByeolGab (Trionycis Carapax) pharmacopuncture in patients with primary headache. Method: Three patients who suffered from primary headache were treated with ByeolGab pharmacopuncture and acupuncture for 2 weeks. We used the Henry Ford Headache Disability Inventory (HDI), a six point scale, and a visual analogue scale (VAS) three times and analyzed the results. Result: After treatment with ByeolGab pharmacopuncture, the VAS, HDI, and six point scale scores were improved in all three patients. The symptoms of headache and other symptoms were also improved. Conclusion: ByeolGab pharmacopuncture is an effective treatment for patients complaining of primary headache.

A Case Report of a Patient with a Tension-Type Headache Treated by Korean Medical Treatment with ByeolGab Pharmacopuncture (긴장형 두통을 주소로 입원한 환자의 별갑약침을 포함한 한방치료에 대한 임상 보고 1례)

  • Kim, Yoon-jung;Kang, Eun-jin;Kim, Koang-lok
    • The Journal of Internal Korean Medicine
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    • v.39 no.5
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    • pp.870-878
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    • 2018
  • Objectives: The aim of this study is to report the effects of Korean medical treatment with ByeolGab pharmacopuncture on a patient with a tension-type headache. Methods: We treated a tension-type headache using Korean medical treatment including ByeolGab pharmacopuncture for 6 days a week for 2 weeks. As a measurement, the numerical rating scale (NRS), the Henry Ford Headache Disability Inventory (HDI), and a six point Likert scale were used to confirm pharmacopuncture therapy efficacy. Results: After treatment, symptoms related to tension-type headache and other complaints were decreased and evaluation using the NRS, HDI, and six-point scale showed improvement in the patient. Conclusions: This study shows that Korean medical treatment with ByeolGab pharmacopuncture has beneficial effects on control of tension-type headache and improvement in quality of life for patients.

Consideration of Ambiguties on Transmission System Expansion Planning using Fuzzy Set Theory (애매성을 고려한 퍼지이론을 이용한 송전망확충계획에 관한 연구)

  • Tran, T.;Kim, H.;Choi, J.
    • Proceedings of the KIEE Conference
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    • 2004.11b
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    • pp.261-265
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    • 2004
  • This paper proposes a fuzzy dual method for analyzing long-term transmission system expansion planning problem considering ambiguities of the power system using fuzzy lineal programming. Transmission expansion planning problem can be formulated integer programming or linear programming with minimization total cost subject to reliability (load balance). A long-term expansion planning problem of a grid is very complex, which have uncertainties fur budget, reliability criteria and construction time. Too much computation time is asked for actual system. Fuzzy set theory can be used efficiently in order to consider ambiguity of the investment budget (economics) for constructing the new transmission lines and the delivery marginal rate (reliability criteria) of the system in this paper. This paper presents formulation of fuzzy dual method as first step for developing a fuzzy Ford-Fulkerson algorithm in future and demonstrates sample study. In application study, firstly, a case study using fuzzy integer programming with branch and bound method is presented for practical system. Secondly, the other case study with crisp Ford Fulkerson is presented.

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Novel biological strategies to enhance the radiation therapeutic ratio

  • Kim, Jae Ho;Jenrow, Kenneth A.;Brown, Stephen L.
    • Radiation Oncology Journal
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    • v.36 no.3
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    • pp.172-181
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    • 2018
  • Successful anticancer strategies require a differential response between tumor and normal tissue (i.e., a therapeutic ratio). In fact, improving the effectiveness of a cancer therapeutic is of no clinical value in the absence of a significant increase in the differential response between tumor and normal tissue. Although radiation dose escalation with the use of intensity modulated radiation therapy has permitted the maximum tolerable dose for most locally advanced cancers, improvements in tumor control without damaging normal adjacent tissues are needed. As a means of increasing the therapeutic ratio, several new approaches are under development. Drugs targeting signal transduction pathways in cancer progression and more recently, immunotherapeutics targeting specific immune cell subsets have entered the clinic with promising early results. Radiobiological research is underway to address pressing questions as to the dose per fraction, irradiated tumor volume and time sequence of the drug administration. To exploit these exciting novel strategies, a better understanding is needed of the cellular and molecular pathways responsible for both cancer and normal tissue and organ response, including the role of radiation-induced accelerated senescence. This review will highlight the current understanding of promising biologically targeted therapies to enhance the radiation therapeutic ratio.