Takafumi Shimada
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View article: EXPERIMENTAL STUDY ON INFLUENCE OF GROUND NONLINEARITY ON SEISMIC STRAIN TRANSFER CHARACTERISTICS OF UNDERGROUND STRUCTURES
EXPERIMENTAL STUDY ON INFLUENCE OF GROUND NONLINEARITY ON SEISMIC STRAIN TRANSFER CHARACTERISTICS OF UNDERGROUND STRUCTURES Open
View article: Evaluating the indicators of a heart rate variability analysis in dogs using Poincaré plots
Evaluating the indicators of a heart rate variability analysis in dogs using Poincaré plots Open
Heart rate variability analyses using Poincaré plots can be useful for evaluating the autonomic nervous system function. However, the interpretation of the quantitative indicators of Poincaré plots remains controversial. Thus, few studies …
View article: FE analysis of the influence of sliding on the seismic strain transfer ratio between the ground and cut and cover tunnels in contact with bearing stratum
FE analysis of the influence of sliding on the seismic strain transfer ratio between the ground and cut and cover tunnels in contact with bearing stratum Open
View article: De novo mutations in bipolar disorder implicate neurodevelopment, immunity, and synaptic signaling
De novo mutations in bipolar disorder implicate neurodevelopment, immunity, and synaptic signaling Open
Bipolar disorder (BD) is a debilitating disorder affecting ~ 1% of the world’s population. Although many common and some rare alleles are associated with this complex disorder, little is known about the role of de novo variation. For the f…
View article: On the relation between active population and infection rate of COVID-19
On the relation between active population and infection rate of COVID-19 Open
The relation between the number of passengers in the main stations and the infection rate of COVID19 in Tokyo is empirically studied. Our analysis based on conventional compartment model suggests: 1) Average time from the true day of infec…
View article: Sensitivity to gene dosage and gene expression affects genes with copy number variants observed among neuropsychiatric diseases
Sensitivity to gene dosage and gene expression affects genes with copy number variants observed among neuropsychiatric diseases Open
View article: EFFECTIVE COUNTERMEASURES TO PREVENT SOFT GROUND DEFORMATION CAUSED BY CONSTRUCTING WIDENING EMBANKMENT
EFFECTIVE COUNTERMEASURES TO PREVENT SOFT GROUND DEFORMATION CAUSED BY CONSTRUCTING WIDENING EMBANKMENT Open
本研究では，軟弱粘性土地盤上の盛土に腹付け盛土を施工した場合の軟弱粘性土地盤および既設盛土の挙動の評価，さらに偏荷重を受ける軟弱粘性土地盤内で高い安定性を発揮する対策工の検討を行うために系統的な遠心模型実験を実施した．実験の結果，腹付け盛土の施工により，既設盛土のり尻付近で鉛直・水平方向に大きな変形が生じ，それに伴い腹付け盛土前面地盤の隆起および既設盛土の連れ込み沈下が確認された．これらの変状に対して柱状改良を施工した場合，水平方向の変形に抵抗する効果が限定的であることが分…
View article: A randomised controlled trial of repeated filmed social contact on reducing mental illness-related stigma in young adults
A randomised controlled trial of repeated filmed social contact on reducing mental illness-related stigma in young adults Open
Aims. Public stigma alters attitudes towards people with mental illness, and is a particular concern for young people since most mental health problems occur in adolescence and young adulthood. However, little is known about the long-term …
View article: The First Pilot Genome-Wide Gene-Environment Study of Depression in the Japanese Population
The First Pilot Genome-Wide Gene-Environment Study of Depression in the Japanese Population Open
Stressful events have been identified as a risk factor for depression. Although gene-environment (G × E) interaction in a limited number of candidate genes has been explored, no genome-wide search has been reported. The aim of the present …
View article: <b>Proposal of Constructional Countermeasures for the Widening of Embankments with a Focus on Their High Stability</b>
<b>Proposal of Constructional Countermeasures for the Widening of Embankments with a Focus on Their High Stability</b> Open
The improvement rate of countermeasures adopted in constructing a second track on an embankment on soft ground is determined empirically due to unknown factors such as the deformation properties of soft ground. In this study, centrifuge mo…
View article: Erratum: Neuroimaging-Aided Prediction of the Effect of Methylphenidate in Children with Attention-Deficit Hyperactivity Disorder: A Randomized Controlled Trial
Erratum: Neuroimaging-Aided Prediction of the Effect of Methylphenidate in Children with Attention-Deficit Hyperactivity Disorder: A Randomized Controlled Trial Open
View article: Neuroimaging-Aided Prediction of the Effect of Methylphenidate in Children with Attention-Deficit Hyperactivity Disorder: A Randomized Controlled Trial
Neuroimaging-Aided Prediction of the Effect of Methylphenidate in Children with Attention-Deficit Hyperactivity Disorder: A Randomized Controlled Trial Open
View article: SHAKING TABLE MODEL TEST FOR DEVELOPMENT OF ASEISMIC COUNTERMEASURE OF MASONRY WALL IN NARROW SITE
SHAKING TABLE MODEL TEST FOR DEVELOPMENT OF ASEISMIC COUNTERMEASURE OF MASONRY WALL IN NARROW SITE Open
都市部鉄道沿線の地山前面に構築された石積み壁は，壁体背面近傍に用地境界が存在することが多く，用地の制約により耐震補強の実施が困難となっている．本研究では，用地制約のため棒状補強材を鉛直に近い角度で配置し，崩壊防止ネットを併用した既設石積み壁の耐震補強法を提案した．提案工法における補強効果・メカニズムの確認を目的とした振動台実験により，崩壊防止ネットの引き留めによる積み石の抜け出し防止効果と，地山補強材の抵抗力を全体に伝達し壁体を拘束する効果を確認した．また，壁体変位の増加に…