• Title/Summary/Keyword: E122

Search Result 466, Processing Time 0.027 seconds

A Proposal of the Maximum Allowable Off-axis e.i.r.p. Level of HAPS Ground Station for Frequency Sharing with 47/48GHz FSS system (47/48GHz FSS 위성 시스템과의 주파수 공유를 위한 HAPS 지상국의 최대 허용 off-axis e.i.r.p. 레벨 제안)

  • Kang, Young-Heung;Choi, Mun-Hwan
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.11 no.3
    • /
    • pp.459-464
    • /
    • 2007

  • Resolution 122 requires to study power limitation applicable for HAPS ground stations to facilitate sharing with space station receivers in 47/48GHz bands. ITU-R Recommendation 1481-1 recommends to improve the side lobe characteristics of HAPS ground station antenna for frequency sharing between FSS system and HAPS system. In this paper, we propose the maximum allowable off-axis e.i.r.p. level of HAPS ground station antennas by considering power limitation to HAPS ground station in Resolution 122, and by improving the side lobe characteristics of HAPS ground station antennas in Recommendation SF.1481-1. The simulation results show that the unfeasible sharing distance between HAPS ground station and FSS earth station can be reduced remarkably, and give the possibility of frequency sharing between two above systems.

  • https://doi.org/10.6109/jkiice.2007.11.3.459 인용 PDF KSCI

Implementation of Java Bytecode Framework (자바 바이트코드 프레임워크 구현)

  • Kim, Ki-Tae;Kim, Je-Min;Yoo, Weon-Hee
    • The Journal of the Korea Contents Association
    • /
    • v.10 no.3
    • /
    • pp.122-131
    • /
    • 2010

  • In this paper, we design and implement CTOC, a new bytecode analysis and translation tool. We also propose E-Tree, a new intermediate code, to efficiently deal with intermediate codes translated from bytecodes. E-Tree is expressed in a tree form by combining relevant bytecode instructions in basic blocks of eCFG to overcome the weaknesses of bytecodes such as complexity and analytical difficulty. To demonstrate the usefulness and possible extensibility of CTOC, we show the creation process of eCFG and E-Tree through practical bytecode analysis and translation and shows the optimization process of a bytecode program as an example of possible extensibility.

  • https://doi.org/10.5392/JKCA.2010.10.3.122 인용 PDF KSCI

국립해양측위정보원 e-Nav 시대 무엇을 해야할까?

  • Park, Gwon-Il
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 2018.11a
    • /
    • pp.122-124
    • /
    • 2018

  • e-Nav시대를 맞이하여 국립해양측위정보원이 무엇을 준비하고 어떻게 준비하여 새로운 업무 분야를 개척하고 더 나아가 해양안전정보의 중추적 역할을수행하기 위한 신규 업무 발굴에 본연구의 목적이 있다.

  • PDF

Combined Detection of Serum MiR-221-3p and MiR-122-5p Expression in Diagnosis and Prognosis of Gastric Cancer

  • Zhang, Yan;Huang, Huifeng;Zhang, Yun;Liao, Nansheng
    • Journal of Gastric Cancer
    • /
    • v.19 no.3
    • /
    • pp.315-328
    • /
    • 2019

  • Purpose: To investigate the clinical value of serum miR-221-3p and miR-122-5p expression levels in the diagnosis and prognosis of gastric cancer. Materials and Methods: Serum samples from 141 gastric cancer cases (gastric cancer group), 110 gastric polyps (gastric polyp group), and 75 healthy people (healthy control) were used to detect miR-221-3p and miR-122-5p expression using real-time reverse transcription polymerase chain reaction. Results: Serum miR-221-3p expression was significantly higher in the gastric cancer group than in the gastric polyp group, and it was significantly lower than that before operation. The miR-221-3p expression was significantly higher in the death group than in the survival group. The proliferation and migration ability significantly increased and the apoptosis rate significantly decreased by miR-221-3p transfection in gastric cancer cells. In contrast, the function of miR-122-5p in gastric cancer cells was opposite of miR-221-3p. Serum miR-221-3p expression was negatively correlated with that of miR-122-5p in gastric cancer. Serum miR-221-3p and miR-122-5p expressions were significantly correlated with the degree of differentiation, tumor, node, metastasis stage, lymph node metastasis, and invasion depth. miR-221-3p and miR-122-5p expression levels were independent prognostic factors for postoperative gastric cancer. In the diagnosis and predicting prognosis of gastric cancer, receiver operating characteristic analysis revealed that the area under curve of combined detection of serum miR-221-3p and miR-122-5p expression had a greater diagnostic effect than either single maker. Conclusions: The miR-221-3p and miR-122-5p are involved in the development of gastric cancer, and they have important clinical values in gastric cancer diagnosis and prognosis.

  • https://doi.org/10.5230/jgc.2019.19.e28 인용 PDF KSCI