• Title/Summary/Keyword: In-su

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Frequency Allocation and Path Selection Scheme in Underlay Cognitive Radio Networks Using Network Coding (네트워크 코딩을 쓰는 언더레이 인지 무선 네트워크에서의 주파수 할당과 경로 선택 기법)

  • Lee, Do-Haeng;Lee, Won Hyoung;Kang, Sung-Min;Hwang, Ho Young
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.40 no.12
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    • pp.2372-2380
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    • 2015
  • In this paper, we propose frequency allocation and path selection scheme in underlay cognitive radio (CR) networks using network coding. In the proposed scheme, we choose the path with consideration of network coding and interference temperature in underlay CR networks and propose an optimization problem to maximize the system throughput of secondary users (SUs). Then, we represent the proposed optimization problem as the multi-dimensional multiple-choice knapsack problem and give the theoretical upper bound for the system throughput of SUs by using linear programming. Finally, we compute the system throughput of SUs by using brute-force search (BFS) and link quality first (LQF) scheme in underlay CR networks. Simulation results show that the system throughput of SUs with BFS is higher than that with LQF in underlay CR networks with and without application of network coding, respectively.

Kim Su-On's Work on the Compilation of 『Euibangyoochui(醫方類聚)』 (식우(拭疣) 김수온(金守溫)의 『의방유취(醫方類聚)』 편찬 사적(事蹟))

  • Ahn, Sang-Woo;Hong, Sae-Young
    • The Journal of Korean Medical History
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    • v.24 no.2
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    • pp.1-15
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    • 2011
  • Kim Su-On(1409~1481) was a editor in King Sejong's times who worked on the publication of "Euibangyoochui(醫方類聚)" and other major publications led by the royal family. This paper will review the works of Kim Su-On based on the medical background of early Joseon Dynasty and the medical book-reading officer system, and also evaluate his contribution to the development of medicine in early Joseon Dynasty, factoring in his life, ideas, and literary talent. By looking at the life of Kim Su-On, we can understand the role of Confucian doctors(儒醫) in the early Joseon Dynasty, how Confucian scholars who were learned in medicine supervised the compilation and correction of "Euibangyoochui(醫方類聚)". Especially, from the poetry of "Sikujip(拭疣集)", contents regarding the proofreading of "Euibangyoochui(醫方類聚)" between Im Won-jun and Kim Su-On shows the publication process of "Euibangyoochui(醫方類聚)" at the reign of King Sungjong. His outstanding achievements are largely due to the medical book-reading officer system implemented around the time "Euibangyoochui (醫方類聚)" was published. The medical book-reading officer system aimed to increase the knowledge of various matters for the civil service bureaucrats, allowing them to become high-ranking officials in the fields of technology. Its another purpose was to compile specialty publications. Many of the civil service bureaucrats who participated in the medical book publications arranged the theoretical basis of medicine and modified experience medicine to a new medical system. The first edition of "Euibangyoochui(醫方類聚)" at King Sejong's reign collected vast medical information into 365 books. Then it was corrected during King Sejo's reign then finally completed and published at King Seongjong's reign. During this period, the experience medicine inherited from Goryeo Dynasty was reestablished into a new form of theoretical interpretation.

Improving TCP Performance Over Cognitive Radio Networks (인지 무선 환경에서 TCP 성능 향상)

  • Byun, Sang-Seon
    • IEMEK Journal of Embedded Systems and Applications
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    • v.9 no.6
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    • pp.353-360
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    • 2014
  • In cognitive radio networks (CRNs), SU (secondary user)'s transmissions are frequently disrupted by PU (primary user)'s transmission. Therefore SU expereiences consecutive retransmission timeout and its exponential backoff, and subsequently, the TCP of SU does not proceed with the transmission even after the disruption is over or the SU succeeds to hold an idle channel. In order to solve this problem, we propose a cross-layer approach called TCP-Freeze-CR. Moreover we consider a practical scenario where either secondary transmitter (ST) or secondary receiver (SR) detects PU's transmission, which results in the need of spectrum synchronization mechanism. All of our proposals are implemented and verified with a real CRN testbed consisting of 6 software radios called USRP. The experimental results illustrate that standard TCP suffers from significant performance degradation and show that TCP-Freeze-CR greatly mitigates the degradation.

Information services to industry by industrial su n.0, pporting organizations (산업지원기관의 산업체 정보봉사)

  • 김용근
    • Journal of Korean Library and Information Science Society
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    • v.21
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    • pp.117-138
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    • 1994
  • This study attempts to provide the foundation for a possibility that industrial su n.0, pporting organization can be strong information centers if they fortify their information dissemination activities, along with the basic functions. The following conclusions are resulted from the analysis in the operations of libraries, service methods and their publications of the information activities provided by the industrial su n.0, pporting organizations. First, the organizations have not be acquiring enough information materials. The services for bibliographic information should guarantee the uses of original documents. Second, the number of organizations providing on-line information services has been increasing, but the provided materials are nothing but their own materials produced during performing the basic functions. Third, the speedy information provision and efficient information dissemination for the end-users in the distance may be possible through on-line service, but it requires information analysis function to select the necessary information in our industrial environment. Forth, th information activities provided by the libraries of industrial su n.0, pporting organizations should be fortified.

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Cloning and Characterization of Ribosome-associated Membrane Protein 4 (RAMP4) gene in silkworm Bombyx mori

  • Yao Qin;Hu Zhigang;Xu Jiaping;Chen Keping
    • International Journal of Industrial Entomology and Biomaterials
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    • v.10 no.2
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    • pp.125-129
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    • 2005
  • Ribosome-associated membrane protein 4 (RAMP4) is a membrane protein that exposes its N-terminal hydrophilic portion on the cytoplasmic side and spans the membrane close to the C-terminal end. RAMP4 has previously been reported to belong to the set of proteins that remains associated with membrane-bound ribosomes, and controls the glycosylation of major histocompatbility complex class II-associated invariant chain. RAMP4 also may be relative to the stabilization of membrane proteins in response to stress, with other components of translocon, and molecular chaperons in ER. Application of 5'-RACE technique with specially designed primer, we cloned a 715 bp cDNA fragment which contains a 195 bp ORF, termed RAMP4. The deduced protein has 64 amino acid residues and contains a putative transmembrane-spanning domain at the COOH terminus.

A Study on the Undrained Characteristics of Highly plastic soils II: Factors on Strength (고소성토의 비배수 특성에 관한 연구 II: 비배수강도 영향요소)

  • Kim, Dae-Kyu
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.9
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    • pp.4253-4258
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    • 2012
  • The investigation of the undrained strength and the important several undrained geotechnical properties was, in detail, made for highly plastic soils using the field and laboratory testing results. The plastic index, activity, water content, and effective unit weight did not show the notable relationship with both Su and normalized Su. The OCR, sensitivity, and undrained elastic modulus presented remarkable tendency with normalized Su. It could be concluded that the use of the normalized Su may lead to the reasonable results then the normalized Su needs further research.

The bibliographical study on the cause, symptom and treatment of Ju-Su(酒嗽) (주수(酒嗽)에 대(對)한 문헌적(文獻的) 고찰(考察))

  • Lee, Seung-Woo;Kim, Seong-Hyeon
    • The Journal of Internal Korean Medicine
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    • v.13 no.1
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    • pp.21-25
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    • 1992
  • This study has been carried out to investigate the cause, symptom and treatment of Ju-Su (酒嗽) by referring to 10 literatures. The results were as follows; 1. The factors causing Ju-Su(酒嗽) are drinking, gastric fever and damyeum(痰飮) made by drinking. 2. The symptom of Ju-Su(酒嗽) is as follows. stimulus feeling in throat cough pain of sub-ribs vomiting blood 3. The drugs of Ju-Su(酒嗽) is as follows. gwaruhangyunhwn (瓜蔞杏運丸) gaejungjawanyongtang (改定紫莞茸湯) bongganghwan (蜂薑丸) bakchulsan (白朮散) hyangbugwaruchungdaehwn (香附瓜蔞靑黛丸) bakyonghwan (白龍丸)

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After Hemorrhoidectomy Korean Medicine Treatment with Whidam's SuGi Therapy: A Case Report (치핵근치술 후 휘담식 수기요법을 병행한 한방관리 증례 1)

  • Hyungil Choi;Na Young Kim;Hun Mo Ahn
    • Journal of Korean Medical Ki-Gong Academy
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    • v.22 no.1
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    • pp.72-82
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    • 2023
  • Objective : The purpose of this study is to report about a 50's female patient after Hemorrhoidectomy, whose symptoms were relieved after Korean medicine treatment with Whidam's SuGi Therapy. Methods : The patient in this study received Korean medicine treatment such as herbal medication, acupuncture treatment, cupping therapy and specially Whidam's SuGi therapy. Results : After the treatment, the symptoms of pains were relieved. Vas fell from 9 to 2 and overall, the body condition has improved. Conclusions : This study showed that Whidam's SuGi therapy added with Korean Medicine treatment can be an effective choice for after Hemorrhoidectomy.