17,846 research outputs found
A remark on zeta functions of finite graphs via quantum walks
From the viewpoint of quantum walks, the Ihara zeta function of a finite
graph can be said to be closely related to its evolution matrix. In this note
we introduce another kind of zeta function of a graph, which is closely related
to, as to say, the square of the evolution matrix of a quantum walk. Then we
give to such a function two types of determinant expressions and derive from it
some geometric properties of a finite graph. As an application, we illustrate
the distribution of poles of this function comparing with those of the usual
Ihara zeta function.Comment: 14 pages, 1 figur
ニホンイヌワシの保全を目指した遺伝解析
京都大学0048新制・課程博士博士(理学)甲第21614号理博第4521号新制||理||1649(附属図書館)京都大学大学院理学研究科生物科学専攻(主査)教授 村山 美穂, 教授 幸島 司郎, 教授 平田 聡学位規則第4条第1項該当Doctor of ScienceKyoto UniversityDGA
Whole body counter surveys of Miharu-town school children for four consecutive years after the Fukushima NPP accident
Comprehensive whole-body counter surveys of Miharu town school children have
been conducted for four consecutive years, in 2011-2014. This represents the
only long-term sampling-bias-free study of its type conducted after the
Fukushima Dai-ichi accident. For the first time in 2014, a new device called
the Babyscan, which has a low Cs MDA of Bq/body, was used to
screen the children shorter than 130 cm. No child in this group was found to
have detectable level of radiocesium. Using the MDAs, upper limits of daily
intake of radiocesium were estimated for each child. For those screened with
the Babyscan, the upper intake limits were found to be <1 Bq/day for
Cs. Analysis of a questionnaire filled out by the children's parents
regarding their food and water consumption shows that the majority of Miharu
children regularly consume local and/or home-grown rice and vegetables. This
however does not increase the body burden.Comment: 11 pages, 10 figure
Associations of Benzodiazepine with Adverse Prognosis in Heart Failure Patients with Insomnia
博士(医学)福島県立医科大
An Infinite Number of Commuting Quantum Charges in the Coset Model
The conformal non-compact coset model in two dimensions has
been recently shown to embody a nonlinear current algebra,
consisting of currents of spin including the energy-momentum tensor.
In this letter we explicitly construct an infinite set of commuting quantum
charges in the model with . These commuting quantum
charges generate a set of infinitely many compatible flows (quantum KP flows),
which maintain the nonlinear current algebra invariant.Comment: 15
Genomic data reveals strong differentiation and reduced genetic diversity in island golden eagle populations
Understanding population structure and the extent and distribution of genetic diversity are recognised as central issues in endangered species research, with broad implications for effective conservation management. Advances in whole genome sequencing (WGS) techniques provide greater resolution of genome-wide genetic diversity and inbreeding. Subspecies of golden eagles (Aquila chrysaetos) in Scotland (A. c. chrysaetos) and Japan (A. c. japonica) are endangered; it is therefore important to understand genetic diversity and inbreeding of these small island populations to increase the chances of conservation success. We investigated this using WGS data from golden eagles in Scotland, continental Europe, Japan, and the USA. Following determination of population genetic structure, analysis of heterozygosity and nucleotide diversity revealed reduced levels of genetic diversity together with runs of homozygosity (ROH), suggesting evidence of inbreeding due to recent shared parental ancestry in the island populations. These results highlight the need to consider genetic reinforcement of small isolated golden eagle populations from neighbouring outbred populations, alongside existing efforts to boost population size through within-island conservation translocations and captive breeding programmes
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