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34 results on '"Bando, Yuya"'

1. Spatio-Temporal Differences in Bike Sharing Usage: A Tale of Six Cities

Author

Kinoshita, Shu-ichi, Bando, Yuya, and Sayama, Hiroki

Subjects
Statistics - Applications
Abstract

This study investigates the spatio-temporal patterns of Bike Sharing System (BSS) usage in six major cities: New York, London, Tokyo, Boston, Chicago and Washington D.C. By analyzing data over a 30-day period with comparable climate and average temperatures, we explored differences in BSS usage between weekdays and weekends in those cities using Jensen-Shannon divergence (JSD) and rank distribution analysis. Our findings reveal significant temporal differences in BSS usage that were commonly observed in all cities, with weekday patterns dominated by commute peaks and weekend patterns reflecting recreational activities. Friday emerges as a transitional day, sharing the characteristics of both weekdays and weekends. Meanwhile, docking station usage rank distributions show remarkable consistency between weekdays and weekends for most cities, with London being a unique anomaly. This study highlights the potential of BSS data to uncover urban mobility patterns and the underlying structures of cities. The results suggest that BSS usage reflects both intrinsic user behavior and external influences such as urban planning., Comment: 16pages, 5figures

Published
2024

7. Development CRISPR-Cas12-based rapid EGFR mutation detection kit.

Author

Kunimasa, Kei, primary, Bando, Yuya, additional, Shiraishi, Miyako, additional, Aizawa, Emi, additional, Nishino, Kazumi, additional, Tamiya, Motohiro, additional, Inoue, Takako, additional, Kuhara, Hanako, additional, Kawachi, Hayato, additional, Kuno, Kika, additional, Imamura, Fumio, additional, Iwai, Shigenori, additional, Kumagai, Toru, additional, and Suzuki, Keiichiro, additional

Published
2020
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10. 2D-shear wave elastography in the prediction of type II endoleaks after endovascular aneurysm repair.

Author

Bando, Yuya, Kitase, Masanori, Shimohira, Masashi, Honda, Junichi, Furuta, Yoshiteru, Kasuya, Akihiro, Imada, Hidenao, Mizutani, Masaru, and Shibamoto, Yuta

Subjects
*ENDOVASCULAR aneurysm repair, *ABDOMINAL aortic aneurysms, *ULTRASONIC imaging, *CONTRAST media, *SURGICAL complications, *BLOOD vessel prosthesis, *RISK assessment, *COMPARATIVE studies, *COMPUTED tomography, SURGICAL complication risk factors
Abstract

To evaluate the usefulness of 2D-shear wave elastography (2D-SWE) in the prediction of type II endoleaks after endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms (AAA). Twenty-nine patients underwent EVAR for AAA, and 2D-SWE was performed after EVAR. Follow-up contrast-enhanced CT and ultrasonography were performed to evaluate endoleaks in all patients. The median follow-up period was 12 months (range, 3–12 months). Patients were divided into two groups: one with an endoleak (endoleak group) and another without it (control group). We compared the elasticity index (EI) of intraluminal thrombus (ITL) and fresh thrombus (FT) between the two groups. Type II endoleaks were confirmed in five of the 29 patients (endoleak group), and there were no endoleaks in the other 24 (control group). ILT was observed in 21 patients of the control group and in all patients of the endoleak group. There was a difference only in EI of ILT; the mean EI (± standard deviation) of ILT was 89 ± 16 kPA in the control group and 113 ± 25 kPA in the endoleak group (p=.037). High EI of ILT may predict the occurrence of type II endoleaks after EVAR of AAA. [ABSTRACT FROM AUTHOR]

Published
2021
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32. Synthesis, properties, and solid-state assemblies of β-alkyl-substituted dipyrrolyldiketone BF2 complexes

Author

Maeda, Hiromitsu, Haketa, Yohei, Bando, Yuya, and Sakamoto, Shohei

Subjects
*COMPLEX compounds, *ORGANIC synthesis, *ANIONS, *MOLECULAR structure, *SOLID state electronics, *PYRROLES, *X-ray crystallography
Abstract

Abstract: In this paper, the synthesis and solid-state structures of β-alkyl-substituted dipyrrolyldiketone BF2 complexes are discussed; these complexes can function as π-conjugated acyclic anion receptors (“molecular flippers”) and are potential building subunits of anion-responsive π-conjugated oligomers or polymers. Modes of the solid-state assemblies in these complexes determined by performing single-crystal X-ray analysis are found to depend on the lengths of the alkyl chains at the β-positions. A β-methyl-substituted receptor has a highly planar structure, which efficiently forms stacking assemblies in the core π-plane in the solid state, while a β-ethyl-substituted receptor shows no stacking assemblies due to the presence of bulky ethyl moieties, which form only dimeric structures by hydrogen bonding. β-Alkyl-substituted anion receptors can be used not only as monomer units of stimuli-responsive polymeric macromolecules but also as components of solid-state electronic materials. [Copyright &y& Elsevier]

Published
2009
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33. Ion‐Pairing Assemblies of Porphyrin–AuIII Complexes in Combination with π‐Electronic Receptor–Anion Complexes.

Author

Tanaka, Hiroki, Haketa, Yohei, Bando, Yuya, Yamakado, Ryohei, Yasuda, Nobuhiro, and Maeda, Hiromitsu

Abstract

Anion complexes of anion‐responsive π‐electronic molecules can behave as pseudo π‐electronic anions providing various ion pairs in combination with countercations. In this study, single crystals of ion‐pairing assemblies comprising porphyrin–AuIII complexes and Cl− complexes of dipyrrolyldiketone BF2 complexes were prepared from 1:1 mixtures of anion receptors and the Cl− salts of cationic porphyrins in solution. In the solid state, the ion pairs formed characteristic assemblies, depending on the substituents of the anion receptors and porphyrin–AuIII complexes. Theoretical calculations on the ion pairs revealed that the stacking structures are stabilized by compensating positive and negative charges as well as π–π interactions. [ABSTRACT FROM AUTHOR]

Published
2020
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34. Electronic and optical properties in the solid-state molecular assemblies of anion-responsive pyrrole-based π-conjugated systems.

Author

Maeda H, Bando Y, Haketa Y, Honsho Y, Seki S, Nakajima H, and Tohnai N

Subjects
Crystallography, X-Ray, Electronics, Models, Molecular, Molecular Structure, Solutions, Anions chemistry, Boron Compounds chemistry, Heterocyclic Compounds chemistry, Pyrroles chemistry
Abstract

On the basis of the chemistry in solution, the solid-state structures and the corresponding electronic and optical properties of dipyrrolyldiketone boron complexes as π-conjugated acyclic anion receptors have been investigated. Solid-state assemblies of the receptors exhibit anion-dependent properties that are in sharp contrast to those in the solution state. Anion complexation, along with structural differences in the pyrrole subunits such as a benzo-fused pyrrole, plays an essential role not only in the formation of the assembled modes but also in determining electronic and optical properties, as well as the charge-carrier mobilities. In addition, by anion complexation, inclusion of the counter cations into the crystals has also been found to be one of the essential factors to determine the properties.

Published
2010
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