経営情報学科における情報処理技術者資格取得支援の取組み

本稿では，経営情報学科における情報処理技術者試験の受験推進および合格支援の取組みと実績について報告する。まず，試験の概要と本学科の人材育成目標との関連を明確にする。次に，受験推進および合格支援のために行ってきた各取組みについて整理する。さらに，受験状況ならびに合格状況を示し，今後の課題についても明らかにする

树木年轮揭示的东灵山主要树种间干旱耐受性差异

近年来北京地区的森林随极端干旱加剧表现出脆弱性特征,为了解气候变化下不同树种的干旱耐受性,选择北京东灵山森林内3个乔木树种(华北落叶松、油松和辽东栎),利用树木年轮生态学方法分析了径向生长与气候的关系,以及对极端干旱事件的抵抗力和弹性。结果表明:华北落叶松和油松与5—6月气温呈显著负相关,辽东栎与5月气温呈显著负相关;华北落叶松与6月降水量、5—6月和8—9月相对湿度呈显著正相关,油松与6—8月降水量和相对湿度呈显著正相关,辽东栎与2月和5月降水量、5月相对湿度呈显著正相关;所有树种均与当年5—7月标准化降水蒸散指数(SPEI)呈显著正相关。华北落叶松是干旱耐受性最弱的树种,径向生长在所选极端干旱事件中(1994年、2001—2002年和2007年)下降幅度最大(46.6%～69.6%),抵抗力(0.534、0.304、0.530)和弹性(0.686、0.570、0.753)显著低于辽东栎和油松,辽东栎在2007年抵抗力显著高于油松,弹性无显著差异。生长季持续的高温或降水减少引起的极端干旱是树木径向生长下降的主要原因,树种间各异的生理生态策略是干旱耐受性差异的可能原因。研究结果可为未来造林树种选择和森林管护措施制定提供新依据,以在气候压力持续增加背景下维持森林生态系统功能和服务

Association of dynamic functional connectivity with bilateral precuneus at resting-state with obsessive-compulsive disorder

目的:探讨强迫症患者在静息状态下双侧楔前叶动态功能连接（dynamic functional connectivity，dFC）的模式。方法:对符合ICD-10诊断标准的50例强迫症患者（患者组）和50名健康对照者（对照组）进行全脑静息态功能磁共振成像（functional magnetic resonance imaging，fMRI）扫描。采用基于全脑体素的dFC分析强迫症患者静息状态下双侧楔前叶dFC模式；采用皮尔逊相关分析方法，探讨强迫症患者异常dFC值与临床症状之间的关系；采用支持向量机分析方法，探索异常的dFC值是否可以用于识别强迫症。结果:与健康对照组比较，患者组左侧楔前叶与左侧内侧前额叶皮质（0.23&plusmn;0.02与0.26&plusmn;0.03， t=-6.23， P&lt;0.05，GRF校正）、左侧楔叶（0.24&plusmn;0.03与0.28&plusmn;0.04， t =-5.30， P&lt;0.05，GRF校正）、左侧中央旁小叶（0.23&plusmn;0.03与0.27&plusmn;0.04， t =-5.36， P&lt;0.05，GRF校正）dFC值降低，右侧楔前叶与左侧中央后回（0.23&plusmn;0.04与0.27&plusmn;0.04， t =-5.12， P&lt;0.05，GRF校正）dFC值降低；患者组降低的左侧楔前叶与左侧内侧前额叶皮质dFC值（ r=0.289， P&lt;0.05，未校正）与Y-BOCS总分呈正相关，降低的右侧楔前叶与左侧中央后回dFC值与Y-BOCS总分（ r=0.292， P&lt;0.05，未校正）、强迫思维因子分（ r=0.304， P&lt;0.05，未校正）呈正相关；降低的右侧楔前叶与左侧中央后回dFC值的受试者操作特征曲线的曲线下面积为0.856，约登指数为0.52，敏感度为100%，特异度为52%。 结论:静息状态下，强迫症患者双侧楔前叶dFC降低；降低的右侧楔前叶与左侧中央后回dFC值可能对于强迫症的识别有提示作用。</p

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies