• Title/Summary/Keyword: $RRT^*$

Search Result 95, Processing Time 0.024 seconds

Overview of Pediatric Continuous Renal Replacement Therapy in Acute Kidney Injury (급성 신손상을 가진 소아의 지속적 신대체 요법)

  • Park, Se-Jin;Shin, Jae-Il
    • Childhood Kidney Diseases
    • /
    • v.15 no.2
    • /
    • pp.107-115
    • /
    • 2011
  • Acute kidney injury (AKI) is associated with mortality and may lead to increased medical expense. A modified criteria (pediatric RIFLE [pRIFLE]: Risk, Injury, Failure, Loss, and End-stage renal disease) has been proposed to standardize the definition of AKI. The common causes of AKI are renal ischemia, nephrotoxic medications, and sepsis. A majority of critically ill children develop AKI by the pRIFLE criteria and need to receive intensive care early in the course of AKI. Factors influencing patient survival (pediatric intensive care unit discharge) are known to be low blood pressure at the onset of renal replacement therapy (RRT), the use of vasoactive pressors during RRT, and the degrees of fluid overload at the initiation of RRT. Early intervention of continuous RRT (CRRT) has been introduced to reduce mortality and fluid overload that affects poor prognosis in patients with AKI. Here, we briefly review the practical prescription of pediatric CRRT and literatures on the outcomes of patients with AKI receiving CRRT and associations among AKI, fluid overload, and CRRT. In conclusion, we suggest that an increased emphasis should be placed on the early initiation of CRRT and fluid overload in the management of pediatric AKI.

Modified Adaptive Random Testing through Iterative Partitioning (반복 분할 기반의 적응적 랜덤 테스팅 향상 기법)

  • Lee, Kwang-Kyu;Shin, Seung-Hun;Park, Seung-Kyu
    • Journal of the Institute of Electronics Engineers of Korea CI
    • /
    • v.45 no.5
    • /
    • pp.180-191
    • /
    • 2008
  • An Adaptive Random Testing (ART) is one of test case generation algorithms that are designed to detect common failure patterns within input domain. The ART algorithm shows better performance than that of pure Random Testing (RT). Distance-bases ART (D-ART) and Restriction Random Testing (RRT) are well known examples of ART algorithms which are reported to have good performances. But significant drawbacks are observed as quadratic runtime and non-uniform distribution of test case. They are mainly caused by a huge amount of distance computations to generate test case which are distance based method. ART through Iterative Partitioning (IP-ART) significantly reduces the amount of computation of D-ART and RRT with iterative partitioning of input domain. However, non-uniform distribution of test case still exists, which play a role of obstacle to develop a scalable algerian. In this paper we propose a new ART method which mitigates the drawback of IP-ART while achieving improved fault-detection capability. Simulation results show that the proposed one has about 9 percent of improved F-measures with respect to other algorithms.

Quality Characteristics of Tarakjuk (Milk Porridge) prepared with Red Yeast-Rice (홍국쌀 첨가 타락죽의 품질특성)

  • Kim, Se-Han;Park, Beam-Woo;Kim, Jae-Hwan
    • The Korean Journal of Food And Nutrition
    • /
    • v.28 no.2
    • /
    • pp.313-319
    • /
    • 2015
  • This study encouraging the consumption of rice. The Tarakjuk in which red yeast rice was added showed the highest water content 78.31%. The viscosity of RRT20, which had the largest amount of red yeast rice, was the lowest for 4,125.50, and pH was the highest in RRT0 The sugar content of Tarakjuk with red yeast rice was the highest in RRT0 for. lightness (L) was lowest in RRT20 which had the largest amount of red yeast rice for, and its red and yellow lighteners were also the highest for respectively. storage at $4^{\circ}C$, no microorganism found for 0 to 1 day of storage but found in every group. The group showed the smallest of microorganism for $2.9{\times}10^2CFU/mL$. On the 7 day, microorganism also found 40% added showed the smallest of microorganism for $3.1{\times}10^4CFU/mL$. The color of the 20% added group, 6.74, was higher than that of the control group, 4.87, but the difference was not significant. The flavor was the in the 30% added group for 5.90, and taste was the in the 20% added group for 6.01 The control group showed the lowest preference for 4.91. The after taste was the in the 30% added group for 5.48. The viscosity of the 40% added group was higher for 5.39 than that of the control group for 5.06, no significant difference. The overall preference was rated highly, and the 20% added group showed the highest preference for 5.57.

Real-time Obstacle Detection and Avoidance Path Generation Algorithm for UAV (무인항공기용 실시간 장애물 탐지 및 회피 경로 생성 알고리즘)

  • Ko, Ha-Yoon;Baek, Joong-Hwan;Choi, Hyung-Sik
    • Journal of Advanced Navigation Technology
    • /
    • v.22 no.6
    • /
    • pp.623-629
    • /
    • 2018
  • In this paper, we propose a real-time obstacle detection and avoidance path generation algorithm for UAV. 2-D Lidar is used to detect obstacles, and the detected obstacle data is used to generate real-time histogram for local avoidance path and a 2-D SLAM map used for global avoidance path generation to the target point. The VFH algorithm for local avoidance path generation generates a real-time histogram of how much the obstacles are distributed in the vector direction and distance, and this histogram is used to generate the local avoidance path when detecting near fixed or dynamic obstacles. We propose an algorithm, called modified $RRT^*-Smart$, to overcome existing limitations. That generates global avoidance path to the target point by creating lower costs because nodes are checked whether or not straight path to a target point, and given arbitrary lengths and directionality to the target points when nodes are created. In this paper, we prove the efficient avoidance maneuvering through various simulation experiment environment by creating efficient avoidance paths.

Retention Time Prediction form Molecular Structure of Sulfur Compounds by Gas Chromatography (기체크로마토그래피에서 황화합물의 구조를 통한 용리시간 예측)

  • Kim, Young Gu;Kim, Won Ho;Pak, Hyung Suk
    • Journal of the Korean Chemical Society
    • /
    • v.42 no.6
    • /
    • pp.646-651
    • /
    • 1998
  • The molecular structure of sulfur compounds and the retention relationship are studied by gas chromatography. Analyzed sulfur compounds are, hydrogen sulfide, sulfur dioxide, carbon disulfide, ethyl mercaptan, dimethyl sulfide, iso-propyl mercaptan, normal propyl mercaptan, ethyl methyl sulfide, tert-butyl mercaptan, tetrahydrothiophene, thiophene, and 2-chlorothiophene. Multiple linear regression explains the retention relationship of molecular descriptors. In GC the temperature program is 30$^{\circ}C$ held for 10.5 min, and then increased to 150$^{\circ}C$ at a rate 15$^{\circ}C$/min. Predicted equation for relative retention time (RRT) using SAS program is as follows; $RRT=0.121bp+14.39dp-8.94dp^2+0.0741sqmw-35.78\; (N=8,\; R^2=0.989, \;Variance=0.175,\;F=66.21)$. RRTs are function of boiling point, the square root of molecular weight, molecular dipole moment, and boiling point effects mostly on RRT. The RRT is maximized at the molecular dipole moment of 0.805D, when using nonpolar columns. The planar and highly symmetric compounds are eluted slowly. The square, of correlation coefficient $(R^2)$ using SAS program, is 0.989, and the variance is 0.175 in training sets. For three sulfur compounds, the variance between observed RRTs and predicted RRTs is 0.432 in testing sets.

  • PDF

Changes of Fatty acids and Free Amino Acids in Raw and Salted-dried Red Tongue Sole During Cooking (생.건 참서대의 조리방법별 지방산과 유리아미노산 함량변화)

  • 신애숙;홍정훈;김경자
    • Korean journal of food and cookery science
    • /
    • v.14 no.5
    • /
    • pp.535-540
    • /
    • 1998
  • Changes in fatty acids and free amino acids of raw .ed tongue sole (RRT) and dried red tongue sole (SRT). were analyzed after steaming, boiling, or baking. 1. RRT was composed of moisture 78.4%, ash 1.2%, crude lipid 1.1%, and crude protein 18.3%. 2. The main fatty acid of RRT and SRT were palmitic acid (21.5%) and lignoceric acid (43.1%) which cover 64.5% of total fatty acid. Steamed RRT or SRT had higher content of fatty acids than boiled or baked ones. 3. The main free amino acids of RRT or SRT were glutamic acid (14.9%), aspartic acid (12.2%), Iysine (10%), leucine (8.4%), and arginine (6.8%) covering more than 52.3% of total free amino acids.

  • PDF

초음파탐상 PD-RR Test의 통계적 신뢰도 평가(I)

  • 박익근;김현묵;박은수;박윤원;강석철;최영환
    • Proceedings of the Korean Reliability Society Conference
    • /
    • 2001.06a
    • /
    • pp.245-255
    • /
    • 2001
  • 원전 가동전/가동중검사 결과의 신뢰도(reliability)는 원전 배관기기의 건전성에 직결되는 것으로써 결함 발견 시 적용되는 파괴역학해석(FMA)은 비파괴검사 결과에 대한 100%의 신뢰를 전제하고 있다. 그러나 비파괴검사가 어느 정도 신뢰성을 가지고 있는지에 대한 평가가 국내에서는 거의 수행된 바가 없었다. 따라서, 본 연구에서는 원전의 비파괴검사 규제 요건의 기술적 근거를 확보하고, 원전 기기 건전성 평가 및 안전성 향상을 위한 합리적 규제지침을 수립하기 위하여 국내 원전 가동중검사(ISI)에 적용되거나 일반 산업계에 적용되고 있는 초음파탐상검사에 대하여 기량검증 Round Robin Test에 의한 통계적 신뢰도를 평가하고자 한다. 이를 위해 초음파검사 PD-RRT 결과의 통계적 신뢰도 평가 모델을 고찰하고, 결함검출성능 평가, 결함크기 측정 평가, 팀 오차 분석 등 초음파검사 PD-RRT 결과의 통계적 신뢰도를 평가하였다.

  • PDF

Round Robin Test for Reliability Evaluation of Ultrasonic Thickness Measurement Results in Nuclear Power Plant Pipelines (원전감육배관 UT 두께측정 결과의 신뢰도 평가를 위한 다자비교시험)

  • Lee, Seung-Joon;Yi, Won-Geun;Lee, Joon-Hyun;Lee, Sung-Ho
    • Proceedings of the KSME Conference
    • /
    • 2007.05a
    • /
    • pp.1702-1707
    • /
    • 2007
  • The reduction of pipe-thickness induced by flow accelerated corrosion (FAC) is one of the most serious problems on the maintenance of piping system in nuclear power plants (NNP). If the thickness of a pipe component is reduced below the critical level, it cannot sustain pressure and consequently results in leakage or rupture. For this reason, wall thinning by FAC has been inspected in secondary side piping systems in NPPs. In this research Round Robin Test (RRT) was conducted to verify confidence of wall thinning measurement system in NPP. 12 inspectors from 3 companies participated and 23 specimens were used according to standard practice in RRT. The gage R&R analysis was introduced in regard to repeatability and reproducibility that are affected to measurement system errors. Confidence intervals of thickness measurement system were obtained.

  • PDF