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Laine B. Butler,Kate B. Nooner 대한정신약물학회 2023 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.21 No.3
As one of the leading causes of death globally, suicide has been researched extensively to better understand factors that confer risk or resilience for suicidality. Promising areas of the literature have focused on brain-based factors that might indicate susceptibility to suicide. Some studies have investigated the link between electroencephalography (EEG) asymmetry, referring to differences in electrical activity in the brain from the left to right hemisphere, and suicidality. The present study is a comprehensive review and meta-analysis of the literature to see if certain patterns in EEG asymmetry serve as a diathesis for suicidal thoughts and behaviors. The results of the current investigation found that EEG asymmetry was not systematically related to suicide based on the literature reviewed. While the present review does not rule out all brain-based factors, the findings suggest that EEG asymmetry may not be a biomarker for suicidality.
Zero distribution of some delay-differential polynomials
Ilpo Laine,Zinelaabidine Latreuch 대한수학회 2020 대한수학회보 Vol.57 No.6
Let $f$ be a meromorphic function of finite order $\rho$ with few poles in the sense $S_{\lambda}(r,f):=O(r^{\lambda +\varepsilon})+S(r,f)$, where $\lambda <\rho$ and $\varepsilon \in (0,\rho-\lambda)$, and let $g(f):=\sum_{j=1}^{k}b_{j}(z)f^{(k_j)}(z+c_{j})$ be a linear delay-differential polynomial of $f$ with small meromorphic coefficients $b_{j}$ in the sense $S_{\lambda}(r,f)$. The zero distribution of $f^{n}(g(f))^{s}-b_{0}$ is considered in this paper, where $b_0$ is a small function in the sense $S_{\lambda}(r,f)$.
Richard M. Laine,Min Kim 한양대학교 세라믹연구소 2007 Journal of Ceramic Processing Research Vol.8 No.2
We report here the synthesis of (ZrO2)1-x(Al2O3)x nanooxide powders with molar ratios that span the ZrO2-Al2O3 composition range. Liquid-feed flame spray pyrolysis (LF-FSP) of mixtures of N(CH2CH2O)3Al (alumatrane) and Zr(CH3CH2COO)2(OH)2 precursors dissolved in ethanol, were aerosolized with O2, combusted at temperatures of 1500-2000oC and rapidly quenched thereafter to provide (ZrO2)1-x(Al2O3)x nanopowders of selected compositions. All powders exhibit average particle sizes (APSs) < 20 nm and corresponding surface areas of ≈50 m2/g when produced at rates of 100-300 g/h. The as-processed powders were characterized in terms of phase, APS, specific surface area, composition, and morphology by BET, XRD, XRF, SEM, TEM, FT-IR, and TGA-DTA. The presence of δ-alumina and tetragonal zirconia is observed over most of the compositions studied. Furthermore, this phase segregation leads to the formation of core-shell materials. Evidence is presented suggesting the incorporation of Zr2+/3+ ions above the published solubility limit of ZrO2 in δ-alumina. We report here the synthesis of (ZrO2)1-x(Al2O3)x nanooxide powders with molar ratios that span the ZrO2-Al2O3 composition range. Liquid-feed flame spray pyrolysis (LF-FSP) of mixtures of N(CH2CH2O)3Al (alumatrane) and Zr(CH3CH2COO)2(OH)2 precursors dissolved in ethanol, were aerosolized with O2, combusted at temperatures of 1500-2000oC and rapidly quenched thereafter to provide (ZrO2)1-x(Al2O3)x nanopowders of selected compositions. All powders exhibit average particle sizes (APSs) < 20 nm and corresponding surface areas of ≈50 m2/g when produced at rates of 100-300 g/h. The as-processed powders were characterized in terms of phase, APS, specific surface area, composition, and morphology by BET, XRD, XRF, SEM, TEM, FT-IR, and TGA-DTA. The presence of δ-alumina and tetragonal zirconia is observed over most of the compositions studied. Furthermore, this phase segregation leads to the formation of core-shell materials. Evidence is presented suggesting the incorporation of Zr2+/3+ ions above the published solubility limit of ZrO2 in δ-alumina.
Leakage Flow Influence on SHF pump model performances
Dupont, Patrick,Bayeul-Laine, Annie-Claude,Dazin, Antoine,Bois, Gerard,Roussette, Olivier,Si, Qiaorui Korean Society for Fluid machinery 2015 International journal of fluid machinery and syste Vol.8 No.3
This paper deals with the influence of leakage flow existing in SHF pump model on the analysis of internal flow behaviour inside the vane diffuser of the pump model performance using both experiments and calculations. PIV measurements have been performed at different hub to shroud planes inside one diffuser channel passage for a given speed of rotation and various flow rates. For each operating condition, the PIV measurements have been trigged with different angular impeller positions. The performances and the static pressure rise of the diffuser were also measured using a three-hole probe. The numerical simulations were carried out with Star CCM+ 9.06 code (RANS frozen and unsteady calculations). Some results were already presented at the XXth IAHR Symposium for three flowrates for RANS frozen and URANS calculations. In the present paper, comparisons between URANS calculations with and without leakages and experimental results are presented and discussed for these flow rates. The performances of the diffuser obtained by numerical calculations are compared to those obtained by the three-holes probe measurements. The comparisons show the influence of fluid leakages on global performances and a real improvement concerning the efficiency of the diffuser, the pump and the velocity distributions. These results show that leakage is an important parameter that has to be taken into account in order to make improved comparisons between numerical approaches and experiments in such a specific model set up.
Leakage Flow Influence on SHF pump model performances
Dupont, Patrick,Bayeul-Laine, Annie-Claude,Dazin, Antoine,Bois, Gerard,Roussette, Olivier,Si, Qiaorui Korean Society for Fluid machinery 2015 International journal of fluid machinery and syste Vol.8 No.4
This paper deals with the influence of leakage flow existing in SHF pump model on the analysis of internal flow behaviour inside the vane diffuser of the pump model performance using both experiments and calculations. PIV measurements have been performed at different hub to shroud planes inside one diffuser channel passage for a given speed of rotation and various flow rates. For each operating condition, the PIV measurements have been trigged with different angular impeller positions. The performances and the static pressure rise of the diffuser were also measured using a three-hole probe. The numerical simulations were carried out with Star CCM+ 9.06 code (RANS frozen and unsteady calculations). Some results were already presented at the XXth IAHR Symposium for three flowrates for RANS frozen and URANS calculations. In the present paper, comparisons between URANS calculations with and without leakages and experimental results are presented and discussed for these flow rates. The performances of the diffuser obtained by numerical calculations are compared to those obtained by the three-holes probe measurements. The comparisons show the influence of fluid leakages on global performances and a real improvement concerning the efficiency of the diffuser, the pump and the velocity distributions. These results show that leakage is an important parameter that has to be taken into account in order to make improved comparisons between numerical approaches and experiments in such a specific model set up.
Database Designs for u-Healthcare System and Magi Network Traffic Management System
용기택(Ki-Tak Yong),Teemu H. Laine,이채우(Chae-Woo Lee) 대한전자공학회 2008 電子工學會論文誌-CI (Computer and Information) Vol.45 No.3
본 논문에서는 u-healthcare system과 트래픽 모니터링 및 분석 시스템인 MAGI의 시스템에 대해 설명하고 각각의 데이터베이스를 분석한다. u-healthcare system은 생체 신호 센서 네트워크와 모바일 게이트웨이를 이용하여 환자의 생체 신호를 환자의 장소와 시간에 관계없이 모니터링하고 분석하는 시스템이다. MAGI는 기존의 트래픽 모니터링 툴의 문제점을 보완한 실시간 트래픽 모니터링 및 분석 시스템이다 MAGI 실시간 트래픽을 분석을 통하여 다이나믹한 방화벽을 구현 할 수 있다. 본 논문은 구현한 시스템의 분석은 물론 데이터베이스의 스키마 및 저장된 데이터를 자세히 분석 하였다. 또한 본 논문은 이론적인 전개와 실제 테스트를 통한 정성적인 성능 분석을 통하여 시스템의 적절성을 평가하였다. In this paper we present two databases for two different systems each having novel implementation ideas: a u-Healthcare system with a mobile gateway and MAGI network monitoring system. u-Healthcare system is capturing and monitoring vital sign data without restrictions of location and time using body sensor network and a mobile gateway. MAGI is a system which has a dynamic firewall function and solves problems of existing traffic monitoring tools. In addition to presenting the design principles behind these two systems, we describe the respective database schemas together with detailed information of the data stored within the databases. We will also show and discuss performance measurements and calculations for both systems. Based on the performance data we will discuss the systems’ suitability for their intended uses.