Sökresultat - "Tohoku University"

A k-twist-spun knot is an (n+1)-dimensional knot in the (n+3)-dimensional sphere that is obtained from an n-dimensional knot in the (n+2)-dimensional sphere by applying an operation called a k-twist-spinning. This construction was introduced by Zeeman (1965). In this paper, we show that the m2-twis...

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The Geo-social survey for Urban Lifestyle Preferences (GULP) is a large-scale social survey with detailed geographic information targeting major cities in Japan. The Metro Survey—the main component of the GULP targeting metropolitan residents—was conducted online using quota sampling to collect 30,0...

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Liquid metal dealloying (LMD) is a selective extraction method wherein miscible elements are removed from a precursor alloy to obtain a three-dimensional (3D) interconnected structure. This study presents a novel application of this method to fabricate heterostructured materials from a CoCrFeMnNi hi...

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This paper describes a method of estimation of concentration and temperature distribution in a packed-bed reactor with high exothermic reactions. One dimensional reactor model which was expressed as nonlinear partial differential equations was discretized to nonlinear lumped parameter system by use...

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Pathogenesis-related (PR) proteins participate in complex plant defense response to pathogens. It is known that members of two PR-proteins families (PR-4 and PR-10) exhibit ribonuclease activity in some cases. These proteins were found to be able to inhibit the growth of pathogenic fungi, and the ri...

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The journal’s Editorial Office and Editorial Board are jointly issuing a resolution and removal of the Journal Notice linked to this article [...]

This work provides a surprisingly simple demonstration that the quantized Hall conductivity of correlated insulators is given by the many-body Chern number, a topological invariant defined in the space of twisted boundary conditions. In contrast to conventional proofs, generally based on the Kubo fo...

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We investigate whether a novel method of quantum machine learning can identify anomalous events in X-ray light curves as transient events and apply it to detect such events from the XMM-Newton 4XMM-DR14 catalog. The architecture we adopt is a quantum version of long short-term memory (LSTM) where so...

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Collaborative filtering generates recommendations by exploiting user-item similarities based on rating data, which often contains numerous unrated items. To predict scores for unrated items, matrix factorization techniques such as nonnegative matrix factorization (NMF) are often employed. Nonnegativ...

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This study investigates the influence of sensory evaluation results on consumer preference, specifically focusing on salted rice balls made from low-amylose rice, which is suitable for chilled rice applications. Sensory evaluations were conducted through home-use tests, and consumer behavior data we...

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High-strength powder metallurgy superalloys often suffer from deformation non-uniformity, cracking, and adiabatic heating during thermomechanical processing. Traditional constitutive models, reliant on friction/adiabatic corrections, fail to address challenges, such as geometric deformation heteroge...

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As globalization deepens, concerns over global fragmentation have intensified, accompanied by rising expectations that the Global South will emerge as a key driver of innovation, competitiveness, advanced markets, and high-quality employment. The widespread diffusion of the Internet and smartphones...

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ABSTRACT Introduction Persistent descending mesocolon is a congenital fixation abnormality where the left‐sided colon deviates medially. When significantly displaced to the right, it may affect sacrocolpopexy. We report two cases of persistent descending mesocolon in which robot‐assisted sacrocolpop...

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We aim to measure circular polarization of γ-rays emitted from neutron capture reactions with a pulsed neutron source for nuclear data and nuclear physics studies. A γ-ray polarimeter was developed to measure the circular polarization. One of performance indicators for polarimeter is an analyzing po...

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This study investigated surface energy fluxes of the Huayna-Potosí Glacier in Bolivia to validate existing empirical melt estimates, including degree-day models and enhanced temperature-index models. A multilayer energy balance model of the snowpack was employed to estimate melt energy and analyze i...

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In this paper, we explored the role of intercultural competence programs in internationalization efforts as a means to move universities beyond traditional performative aspects of increasing international enrollments, exchanges, and competitiveness toward more transformative aspects of developing fa...

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Assessing available phosphorus (P) in paddy fields is challenging due to waterlogging-induced reducing conditions. This study tested the applicability of the Truog, Bray 2, and Mehlich 3 extraction methods in both air-dried and incubated soils, as well as the ascorbic-acid-reduced Bray 2 (AR Bray 2)...

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The Algorithm selection approach improves performance by dynamically choosing the optimal Algorithm for each input instance. While this selection strategy has been extensively studied, the amount of data and their nature have not yet been investigated with respect to meta-learning, particularly in s...

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Abstract We present the first P wave radial anisotropy tomography of the crust and upper mantle beneath the North China Craton (NCC), determined using a large number of high‐quality arrival‐time data of local earthquakes and teleseismic events. Our results show a prominent high‐velocity (high‐V) ano...

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