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  1. No Access

    Article

    Mathematical Aspects of the Digital Annealer’s Simulated Annealing Algorithm

    The Digital Annealer is a CMOS hardware designed by Fujitsu Laboratories for high-speed solving of Quadratic Unconstrained Binary Optimization (QUBO) problems that could be difficult to solve by means of exist...

    Bruno Hideki Fukushima-Kimura, Noe Kawamoto, Eitaro Noda in Journal of Statistical Physics (2023)

  2. Article

    Open Access

    No increase in translocated chromosomal aberrations, an indicator of ionizing radiation exposure, in childhood thyroid cancer in Fukushima Prefecture

    To investigate the effects of radiation exposure due to the Fukushima nuclear power plant accident, following the disaster Fukushima Prefecture launched thyroid ultrasound examinations of residents who were ge...

    Akira Sakai, Naohiro Tsuyama, Tetsuya Ohira, Misaki Sugai-Takahashi in Scientific Reports (2023)

  3. Article

    Micro- and Nanostructure Analysis of Vapor-Phase-Grown AlN on Face-to-Face Annealed Sputtered AlN/Nanopatterned Sapphire Substrate Templates

    Micro- and nanostructures in vapor-phase-grown AlN on face-to-face annealed sputtered AlN (FFA Sp-AlN) templates formed on nanopatterned sapphire substrates (NPSS) were comprehensively analyzed using transmiss...

    Yudai Nakanishi, Yusuke Hayashi, Takeaki Hamachi in Journal of Electronic Materials (2023)

  4. No Access

    Article

    Mixing Time and Simulated Annealing for the Stochastic Cellular Automata

    Finding a ground state of a given Hamiltonian of an Ising model on a graph \(G=(V,E)\) ...

    Bruno Hideki Fukushima-Kimura, Satoshi Handa in Journal of Statistical Physics (2023)

  5. Article

    Open Access

    Comprehensive analysis of current leakage at individual screw and mixed threading dislocations in freestanding GaN substrates

    The electrical characteristics of Schottky contacts on individual threading dislocations (TDs) with a screw-component in GaN substrates and the structures of these TDs were investigated to assess the effects o...

    Takeaki Hamachi, Tetsuya Tohei, Yusuke Hayashi, Masayuki Imanishi in Scientific Reports (2023)

  6. Article

    Open Access

    High-temperature operation of gallium oxide memristors up to 600 K

    Memristors have attracted much attention for application in neuromorphic devices and brain-inspired computing hardware. Their performance at high temperatures is required to be sufficiently reliable in neuromo...

    Kento Sato, Yusuke Hayashi, Naoki Masaoka, Tetsuya Tohei, Akira Sakai in Scientific Reports (2023)

  7. Article

    Open Access

    ΔNp63α transcriptionally represses p53 target genes involved in the radiation-induced DNA damage response

    The DNA damage response (DDR) is a mechanism that protects cells against radiation-induced oxidative DNA damage by causing cell cycle arrest and apoptosis. TP63 is a member of the tumour suppressor TP53 gene fami...

    Ken-ichi Kudo, Naohiro Tsuyama, Kento Nagata, Tatsuhiko Imaoka in Radiation Oncology (2022)

  8. Article

    Open Access

    Loss of participation among evacuees aged 20–37 years in the disaster cohort study after the Great East Japan Earthquake

    The present study aimed to clarify the characteristics of young evacuees who had missed the Comprehensive Health Check of the Fukushima Health Management Survey (FHMS) after the Great East Japan Earthquake in ...

    Kana Yamamoto, Morihito Takita, Masahiro Kami, Yuta Tani in Scientific Reports (2022)

  9. No Access

    Article

    Impact of lifestyle and psychosocial factors on the onset of hypertension after the Great East Japan earthquake: a 7-year follow-up of the Fukushima Health Management Survey

    Natural disasters force many evacuees to change several aspects of their lifestyles. This longitudinal study aimed to investigate whether factors such as living environment and lifestyle factors were related t...

    Eri Kobari, Kenichi Tanaka, Masanori Nagao, Kanako Okazaki in Hypertension Research (2022)

  10. Article

    Open Access

    Changes in the proportion of anemia among young women after the Great East Japan Earthquake: the Fukushima health management survey

    This study aimed to evaluate the sequential changes in the proportion of anemia among young women over eight years after the Great East Japan Earthquake in 2011 using a prospective study of the Fukushima Healt...

    Kana Yamamoto, Morihito Takita, Masahiro Kami, Yoshinobu Takemoto in Scientific Reports (2022)

  11. No Access

    Article

    Correct Bounds on the Ising Lace-Expansion Coefficients

    The lace expansion for the Ising two-point function was successfully derived in (Sakai in Commun Math Phys 272:283–344, 2007, Proposition 1.1). It is an identity that involves an alternating series of lace-exp...

    Akira Sakai in Communications in Mathematical Physics (2022)

  12. Article

    Open Access

    A case of Schnitzler’s syndrome without monoclonal gammopathy successfully treated with canakinumab

    Schnitzler’s syndrome (SchS) is a rare autoinflammatory syndrome with diagnostic challenge and be characterized by chronic urticaria, a monoclonal gammopath, periodic fever and bone pain. In addition to the mo...

    Yuya Fujita, Tomoyuki Asano, Akira Sakai, Natsumi Norikawa in BMC Musculoskeletal Disorders (2021)

  13. Article

    Open Access

    The association between body mass index and recovery from post-traumatic stress disorder after the nuclear accident in Fukushima

    Post-traumatic stress disorder (PTSD) and obesity share common risk factors; however, the effect of obesity on recovery from PTSD has not been assessed. We examined the association between body mass index (BMI...

    Masato Nagai, Tetsuya Ohira, Masaharu Maeda, Seiji Yasumura in Scientific Reports (2021)

  14. Article

    Open Access

    Chromosomal translocation t(11;14) and p53 deletion induced by the CRISPR/Cas9 system in normal B cell-derived iPS cells

    Multiple myeloma (MM) cells are derived from mature B cells based on immunoglobulin heavy chain (IgH) gene analysis. The onset of MM is often caused by a reciprocal chromosomal translocation (cTr) between chr 14 ...

    Yusuke Azami, Naohiro Tsuyama, Yu Abe, Misaki Sugai-Takahashi in Scientific Reports (2021)

  15. Article

    Open Access

    Influence of post-disaster evacuation on incidence of hyperuricemia in residents of Fukushima Prefecture: the Fukushima Health Management Survey

    After the Great East Japan Earthquake, over 160,000 residents in Fukushima Prefecture were forced to evacuate the area around the Fukushima Daiichi power plant following nuclear accident there. Health problems...

    Shigeatsu Hashimoto, Masato Nagai, Tetsuya Ohira in Clinical and Experimental Nephrology (2020)

  16. No Access

    Article

    Critical Two-Point Function for Long-Range Models with Power-Law Couplings: The Marginal Case for \({d\ge d_{\rm c}}\)

    Consider the long-range models on \({\mathbb{Z}^d}\)Zd of random walk, self-avoiding walk, percolation and the Ising model, whose translation-invariant 1-step distribution/coupling coefficient decays as $${|x|^{-...

    Lung-Chi Chen, Akira Sakai in Communications in Mathematical Physics (2019)

  17. Article

    Open Access

    Author Correction: Gate Tuning of Synaptic Functions Based on Oxygen Vacancy Distribution Control in Four-Terminal TiO2−x Memristive Devices

    An amendment to this paper has been published and can be accessed via a link at the top of the paper.

    Zenya Nagata, Takuma Shimizu, Tsuyoshi Isaka, Tetsuya Tohei in Scientific Reports (2019)

  18. Article

    Open Access

    Gate Tuning of Synaptic Functions Based on Oxygen Vacancy Distribution Control in Four-Terminal TiO2−x Memristive Devices

    Recent developments in artificial intelligence technology has facilitated advances in neuromorphic computing. Electrical elements mimicking the role of synapses are crucial building blocks for neuromorphic com...

    Zenya Nagata, Takuma Shimizu, Tsuyoshi Isaka, Tetsuya Tohei in Scientific Reports (2019)

  19. Article

    Open Access

    Demonstrative operation of four-terminal memristive devices fabricated on reduced TiO2 single crystals

    Resistive switching (RS) was demonstrated in four-terminal planar memristive devices fabricated on reduced TiO2 (TiO2−x) single crystal substrates. In the device, a pair of diagonally opposing electrode terminals...

    Shotaro Takeuchi, Takuma Shimizu, Tsuyoshi Isaka, Tetsuya Tohei in Scientific Reports (2019)

  20. No Access

    Chapter and Conference Paper

    Mean-Field Bound on the 1-Arm Exponent for Ising Ferromagnets in High Dimensions

    The 1-arm exponent \(\rho \) for the ferromagnetic Ising model on ...

    Satoshi Handa, Markus Heydenreich in Sojourns in Probability Theory and Statist… (2019)

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