• International Journal of Highway Engineering
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• v.5 no.3 s.17
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• pp.21-29
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• 2003

The management of existing airfield pavement information has currently become difficult and the maintenance cost has increased over time due to the long-term performance. It is needed to develop the method for effective budget allocation and systematic airfield pavement management services. The objectives of this paper are to introduce Micro PAVER, one of the popular pavement management systems, into our management system and customize Micro PAVER based on our environment and pavement management level. This study focused on the analysis on logics and structures of Micro PAVER and customization of important parts in the program using the existing pavement evaluation data and survey method. Customized items selected in this study included the pavement deterioration prediction models, critical PCI, maintenance cost by PCI, maintenance or rehabilitation method and unit cost, and PCI rank.

• Annals of Laboratory Medicine
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• v.38 no.6
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• pp.538-544
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• 2018

Background: Serum copeptin has been demonstrated to be useful in early risk stratification and prognostication of patients with acute myocardial infarction (AMI). However, the prognostic value of copeptin after percutaneous coronary intervention (PCI) for clinical outcomes remains uncertain. We investigated the prognostic role of serum copeptin levels immediately after successful PCI as a prognostic marker for major adverse cardiac events (MACE; comprising death, repeat PCI, recurrent MI, or coronary artery bypass grafting) in patients with AMI. Methods: A retrospective study was performed in 149 patients with AMI who successfully received PCI. Serum copeptin levels were analyzed in blood samples collected immediately after PCI. The association between copeptin levels and MACE during the follow-up period was evaluated. Results: MACE occurred in 34 (22.8%) patients during a median follow-up of 30.1 months. MACE patients had higher copeptin levels than non-MACE patients did. Multiple logistic regression analysis showed that the increase in serum copeptin levels was associated with increased MACE incidence (odds ratio=1.6, P =0.005). Conclusions: A high level of serum copeptin measured immediately after PCI was associated with MACE in patients with AMI during long-term follow-up. Serum copeptin levels can serve as a prognostic marker in patients with AMI after successful PCI.

• Journal of the Korea Concrete Institute
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• v.13 no.1
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• pp.46-53
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• 2001

Two full scale precast pretensioned dapped ended rectangular beams designed by PCI design handbook for a major domestic live load of market and parking building - 500kgf/㎡ and 1,200kgf/㎡ were investigated experimentally. The bottom length of beams was 60cm which was same to the length of rectangular column in the base of five-story market or parking buildings. The height of dap was web hight plus half of the flange height within the allowable limit of PCI method. Shear tests were performed on four beam ends. Followings were obtained from the experimental study. All of the specimens were fully complied with the PCI design handbook. Two of four specimens which were designed for live load of 1,200kgf/㎡ showed crackings at the re-entrant corner of dap before the full service loadings, and failed by direct shear at the load level much less than their calculated nominal strength. The specimens designed for live load of 1,200kgf/㎡ failed at 772 tonf and 78.36tonf by direct shear crackings. This strength was less than PCI limit of 81.9 tonf and higher than ACI limit of 65.62tonf. Thus, the limit suggested by ACI seems more reasonable in regard of safety in view of this test results. According to load-strain curves, the strain of hanger reinforcement reached almost yield strain. It is recommended to use more inclined hanger reinforcement of improve the strength and serviceability.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.44 no.1
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• pp.84-89
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• 2007

In order to design and test an SoC modem for high speed communication, the platform with the architecture of such high speed communication is needed. That platform is needed for testing large data in speed of 500Mbps. This paper shows that transmission data can be uploaded and downloaded by 250Mbps between a virtual modem target board and a PC through the AHB-PCI IP and the speed of based on DPRAM and PCI.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.43 no.4 s.310
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• pp.39-49
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• 2006

This paper proposes an efficient verification environment of PCI Express controller that is the future I/O interface. This verification environment consists of a test vector generator, a test bench, and two abstract memories. We also define the assembler set to generate the verification scenarios. In this paper, we propose the random test environment which consists of a random vector generator, a .simulator part, and a compare engine. This verification methodology is useful to find the special errors which are not detected by the basic-behavioral test and hardware-design test.

• The Korean Journal of Rehabilitation Nursing
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• v.16 no.2
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• pp.100-111
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• 2013

Purpose: The purpose of this study was to identify the effectiveness of back pain prevention intervention program on reducing back pain of patients undergoing percutaneous coronary intervention (PCI). Methods: The patients were divided into two groups as the experimental group and control group. In the experimental group, the participants took bedrest for 4 hours after PCI and then received back pain prevention intervention program (BPPIP). Total of 5 times BPPIP with 1 hour interval for 5-10 minutes per each intervention was administered to the patients taking bedrest for 4 hours after PCI. In the control group, total of 5 times routine nursing care with 1 hour interval was administered to the patients taking bedrest for 4 hours after PCI. The data were collected on admission in the ICU and after the 5 exercise sessions. The collected data were analyzed using SPSS/WIN program. Results: No significant differences in the occurrence of hemorrhage after the BPPIP were observed between the experimental group and the control group. After the BPPIP, back pain outcomes were significantly low in the experimental group. However, urination disorder and cortisol level did not show a statistically significant differences between two groups. Conclusion: It is clear that BPPIP is a useful nursing intervention for reducing back pain of patients undergoing PCI.

• Journal of Communications and Networks
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• v.13 no.4
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• pp.367-376
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• 2011

In this paper, we propose self-organizing schemes for the initial configuration of the neighbor cell list (NCL), maintenance of the NCL, and physical cell identifier (PCI) allocation in heterogeneous networks such as long term evolution systems where lower transmission power nodes are additionally deployed in macrocell networks. Accurate NCL maintenance is required for efficient PCI allocation and for avoiding handover delay and redundantly increased system overhead. Proposed self-organizing schemes for the initial NCL configuration and PCI allocation are based on evolved universal terrestrial radio access network NodeB (eNB) scanning that measures reference signal to interference and noise ratio and reference symbol received power, respectively, transmitted from adjacent eNBs. On the other hand, the maintenance of the NCL is managed by adding or removing cells based on periodic user equipment measurements. We provide performance analysis of the proposed schemes under various scenarios in the respects of NCL detection probability, NCL false alarm rate, handover delay area ratio, PCI conflict ratio, etc.

• International Journal of Highway Engineering
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• v.15 no.6
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• pp.49-60
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• 2013

PURPOSES : The evaluation of the pavement condition of the asphalt concrete pavement of No. 2 runway of Inchon International Airport through PMS, a supporting system for making a decision of pavement, maintenance and repair, was made, and the proper time for repair according to the PCI reduction rate was suggested. METHODS : By comparing and analyzing the evaluation results of pavements built in 2009, 2010, 2011, PCI change in each facility (No. 2 runway, C parallel taxiway, connection taxiway) was calculated. By applying the calculated change to PCI deduction rate model, the pavement condition of the target sections was estimated, and then the necessary section and time for repair were chosen. RESULTS : After careful consideration of the time for pavement and maintenance, based on the result of PCI prediction, it was estimated that the southern takeoff and landing section of No. 2 runway was required to be repaired in 2012; connection taxiway in 2013; and C parallel taxiway in 2014; however, the section which is the main moving route of connection taxiway and C parallel taxiway was needed to be repaired in 2012. CONCLUSIONS : For maintenance and repair of airport pavements, the optimal alternative should be chosen by considering economics and operability, via examining the time for repair and the aspect of management all together on the basis of this study.

• Proceedings of the Korea Society for Simulation Conference
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• 2002.05a
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• pp.81-87
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• 2002

본 논문은 RAID 시스템의 몇 가지 구성에 대해 시뮬레이션을 통해 그 성능을 분석한다. 대용량의 RAID를 구성하기 위해서는 다수의 디스크가 필요한데 반해, 하나의 PCI의 버스에 연결될 수 있는 장치의 개수 제한되어 있어 이 경우 확장 PCI 버스가 필요하다. 본 논문에서는 RAID 시스템의 하드웨어 구조, 특히 각 구성요소를 연결하는 PCI버스의 부하에 초점을 맞춘다. 버스 트랜잭션을 세 가지로 분류하고, 각각의 경우를 분석하고 평가한다. 이 분석으로부터 RAID 시스템의 두 가지 구조에 대해 성능을 계산하고 시뮬레이션 한 결과를 비교한다.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.36.4-36
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• 2002

$\textbullet$ A FPGA-based One-chip position controller with the PCI interface was developed. $\textbullet$ The peripherals of the existent controller can be implemented in one FPGA device. $\textbullet$ For this purpose, the high capacity FPGA device was used. $\textbullet$ PCI controller was merged into the position controller by using the PCI controller of core form. $\textbullet$ The developed position controller used only one FPGA device to achieve the required function. $\textbullet$ By doing this, the overall system can be simplified. $\textbullet$ The noise and power dissipation problems can be minimized and it has the advantage in the price.