Some Homotopy Groups of Homogeneous Spaces

The symplectic group is embedded in the rotation group and the quotient set equipped with the identification topology is a homogeneous space. The purpose of this paper is to determine some homotopy groups of the homogeneous space. Exact sequences induced from fibrations are frequently used, and homotopy groups of Lie groups and other homogeneous spaces which are obtained by several authors are referred heavily.</p

The 2-components of the 31-stem homotopy groups of the 9 and 10-spheres

Group structures of the 2-primary components of the 31-stem homotopy groups of spheres were studied by Oda in 1979. There are,however, two incompletely determined ｇroups. In this paper,our investigation with Toda's composition method gives structures of them.ArticleJournal of the Faculty of Science Shinshu University 46: 1-19(2015)departmental bulletin pape

Factors influencing improvement in individuals with selective mutism: Effectiveness of hierarchical cluster analysis using text mining techniques

This study investigated the factors that facilitate improvement in people with selective mutism. We carried out a hierarchical cluster analysis using text mining techniques on 35 case papers dealing with selective mutism. Six clusters were found to promote the improvement of the disorder. Of the six clusters, two were psychological factors, and the remaining four were considered social factors. The results indicate that interventions for psychological factors and environmental adjustments for social factors are needed to promote improvement in patients with selective mutism. It is also suggested that educational support programs be provided for teachers and parents of people with selective mutism. The results demonstrate the effectiveness of a hierarchical cluster analysis to extract new factors for aiding improvement in people with disorders in studies employing the psychosocial approach

On the Soil Moisture Characteristic Curve of Sandy Soil and Its Temperature Dependence

The soil moisture characteristic curves of sandy soils were determined by using the soil column method and their temperature dependence was examined. An analytical expression fitting the observed data is: Sℯ＝1/{1+(αh)ⁿ} m where Sℯ is the effective saturation，h is the matric suction head，and α，m，n are the parameters to be determined experimentally. The temperature coefficient of matric suction，which was calculated from the experimentally determined expression，greatly exceeded the values expected from the c1assical surface tension-temperature relationship. Larger values of temperature coefficient were obtained in decomposed granite in comparison to dune sand. The trapped air in the unsaturated soi1 system was considered to have resulted in the discrepancy between the observed and calculated temperature coefficients

Role of Gut Microbiota in Bile-Acid Metabolism

The role of the gut microbiota in modifying the pathophysiology of various diseases, including neurodegenerative diseases, is increasingly becoming clear. Bile acids have been shown to be endogenous factors that affect gut microbiota, and bile-acid metabolites directly or indirectly affect host physiology and pathophysiology. The development of metagenomic analysis for gut microbiota and systematic bile-acid measurement using LC–MS/MS has triggered a breakthrough for research in this field. Clinically, an inhibitor of the ileal bile-acid transporter (Elobixibat) was used as a therapeutic agent for chronic constipation, which also paved the way for progress in bile-acid signal research. Additionally, this review emphasizes the importance of gut microbiota-bile acid-receptor signals when considering nutritional approaches to promote healthy longevity

Decomposing the Spectrum of Ultra-Luminous X-ray Pulsar NGC 300 ULX-1

A phase-resolved analysis on the X-ray spectrum of Ultra-Luminous X-ray Pulsar (ULXP) NGC 300 ULX-1 is performed with data taken with XMM-Newton and NuSTAR on 2016 December 16th. In addition to the classical phase-restricting analysis, a method developed in active galactic nuclei studies is newly employed for ULXP. It has revealed that the pulsation cycle of the source can be divided into two intervals in terms of X-ray variability. This suggests the rotating flow consists of at least two representative emission regions. Furthermore, the new method successfully decomposed the spectrum into an independent pair in each interval. One is an unchanging-component spectrum that can be reproduced by a standard disk model with a $720^{+220}_{-120}$ km inner radius and a $0.25\pm0.03$ keV peak temperature. The other is the spectrum of the component that coincides with the pulsation. This was explained with a Comptonization of a $0.22^{+0.2}_{-0.1}$ keV blackbody and exhibited a harder photon index in the brighter phase interval of two. The results are consistent with a picture that the pulsating emission originates from a funnel-like flow formed within the magnetosphere, and the inner flow exhibiting a harder continuum is observed exclusively when the opening cone points to the observer.Comment: 27 pages, 15 figures, accepted for publication in Ap