Výsledky vyhledávání

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Snap and Jump: How Elastic Shells Pop Out

Autor: Abe, Takara, Hashiguchi, Isamu, Nakahara, Yukitake, Kobayashi, Shunsuke, Tarumi, Ryuichi, Takahashi, Hidetoshi, Ishigami, Genya, Sano, Tomohiko G.

Grip, walk, crawl, and jump. Soft robots are integrated functional structures composed of compliant mechanisms, whose activity spans various industrial applications such as surgery, healthcare, surveillance, and even planetary exploration. One of the

Externí odkaz: http://arxiv.org/abs/2410.08525

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Probing electron trapping by current collapse in GaN/AlGaN FETs utilizing quantum transport characteristics

Autor: Abe, Takaya, Shinozaki, Motoya, Matsumura, Kazuma, Aizawa, Takumi, Kumasaka, Takeshi, Ito, Norikazu, Tanaka, Taketoshi, Nakahara, Ken, Otsuka, Tomohiro

Publikováno v: Applied Physics Letters 125, 253501 (2024)

GaN is expected to be a key material for next-generation electronics due to its interesting properties. However, the current collapse poses a challenge to the application of GaN FETs to electronic devices. In this study, we investigate the formation

Externí odkaz: http://arxiv.org/abs/2408.04109

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Measurement of $J/\psi$ and $\psi\left(2S\right)$ production in $p+p$ and $p+d$ interactions at 120 GeV

Autor: Leung, C. H., Nagai, K., Nakano, K., Nawarathne, D., Dove, J., Prasad, S., Wuerfel, N., Aidala, C. A., Arrington, J., Ayuso, C., Barker, C. L., Brown, C. N., Chang, W. C., Chen, A., Christian, D. C., Dannowitz, B. P., Daugherity, M., Fassi, L. El, Geesaman, D. F., Gilman, R., Goto, Y., Guo, R., Hague, T. J., Holt, R. J., Hossain, M. F., Isenhower, D., Kinney, E., Klein, A., Kleinjan, D. W., Kudo, Y., Lin, P. -J., Liu, K., Liu, M. X., Lorenzon, W., McClellan, R. E., McGaughey, P. L., Medeiros, M. M., Miyachi, Y., Miyasaka, S., Morton, D. H., Nakahara, K., Nara, S., Pate, S. F., Peng, J. C., Pun, A., Ramson, B. J., Reimer, P. E., Rubin, J. G., Sanftl, F., Sawada, S., Sawada, T., Scott, M. B. C., Shibata, T. -A., Tadepalli, A. S., Teo, M., Towell, R. S., Uemura, S., Wang, S. G., Wickes, A. B., Wu, J., Ye, Z. H.

Publikováno v: Phys. Lett. B 858, 139032 (2024)

We report the $p+p$ and $p+d$ differential cross sections measured in the SeaQuest experiment for $J/\psi$ and $\psi\left(2S\right)$ production at 120 GeV beam energy covering the forward $x$-Feynman ($x_F$) range of $0.5 < x_F <0.9$. The measured cr

Externí odkaz: http://arxiv.org/abs/2406.11459

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Observation of Declination Dependence in the Cosmic Ray Energy Spectrum

Autor: The Telescope Array Collaboration, Abbasi, R. U., Abu-Zayyad, T., Allen, M., Belz, J. W., Bergman, D. R., Buckland, I., Campbell, W., Cheon, B. G., Endo, K., Fedynitch, A., Fujii, T., Fujisue, K., Fujita, K., Fukushima, M., Furlich, G., Gerber, Z., Globus, N., Hanlon, W., Hayashida, N., He, H., Hibino, K., Higuchi, R., Ikeda, D., Ishii, T., Ivanov, D., Jeong, S., Jui, C. C. H., Kadota, K., Kakimoto, F., Kalashev, O., Kasahara, K., Kawachi, Y., Kawata, K., Kharuk, I., Kido, E., Kim, H. B., Kim, J. H., Kim, S. W., Kobo, R., Komae, I., Komatsu, K., Komori, K., Koyama, C., Kudenko, M., Kuroiwa, M., Kusumori, Y., Kuznetsov, M., Kwon, Y. J., Lee, K. H., Lee, M. J., Lubsandorzhiev, B., Lundquist, J. P., Matsuzawa, A., Matthews, J. A., Matthews, J. N., Mizuno, K., Mori, M., Murakami, M., Nagataki, S., Nakahara, M., Nakamura, T., Nakayama, T., Nakayama, Y., Nonaka, T., Ogio, S., Ohoka, H., Okazaki, N., Onishi, M., Oshima, A., Oshima, H., Ozawa, S., Park, I. H., Park, K. Y., Potts, M., Przybylak, M., Pshirkov, M. S., Remington, J., Rott, C., Rubtsov, G. I., Ryu, D., Sagawa, H., Sakaki, N., Sakamoto, R., Sako, T., Sakurai, N., Sakurai, S., Sato, D., Sato, S., Sekino, K., Shibata, T., Shikita, J., Shimodaira, H., Shin, B. K., Shin, H. S., Shinozaki, K., Smith, J. D., Sokolsky, P., Stokes, B. T., Stroman, T. A., Takagi, Y., Takahashi, K., Takeda, M., Takeishi, R., Taketa, A., Takita, M., Tameda, Y., Tanaka, K., Tanaka, M., Thomas, S. B., Thomson, G. B., Tinyakov, P., Tkachev, I., Tomida, T., Troitsky, S., Tsunesada, Y., Udo, S., Urban, F., Vaiman, I. A., Vrábel, M., Warren, D., Yamazaki, K., Zhezher, Y., Zundel, Z., Zvirzdin, J.

We report on an observation of the difference between northern and southern skies of the ultrahigh energy cosmic ray energy spectrum with a significance of ${\sim}8\sigma$. We use measurements from the two largest experiments$\unicode{x2014}$the Tele

Externí odkaz: http://arxiv.org/abs/2406.08612

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Variational Bayesian Methods for a Tree-Structured Stick-Breaking Process Mixture of Gaussians by Application of the Bayes Codes for Context Tree Models

Autor: Nakahara, Yuta

The tree-structured stick-breaking process (TS-SBP) mixture model is a non-parametric Bayesian model that can represent tree-like hierarchical structures among the mixture components. For TS-SBP mixture models, only a Markov chain Monte Carlo (MCMC)

Externí odkaz: http://arxiv.org/abs/2405.00385

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Self-adaptive Traffic Anomaly Detection System for IoT Smart Home Environments

Autor: Watanabe, Naoto, Yamazaki, Taku, Miyoshi, Takumi, Yamamoto, Ryo, Nakahara, Masataka, Okui, Norihiro, Kubota, Ayumu

With the growth of internet of things (IoT) devices, cyberattacks, such as distributed denial of service, that exploit vulnerable devices infected with malware have increased. Therefore, vendors and users must keep their device firmware updated to el

Externí odkaz: http://arxiv.org/abs/2403.02744

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On-Premises Superconducting Quantum Computer for Education and Research

Autor: Rönkkö, Jami, Ahonen, Olli, Bergholm, Ville, Calzona, Alessio, Geresdi, Attila, Heimonen, Hermanni, Heinsoo, Johannes, Milchakov, Vladimir, Pogorzalek, Stefan, Sarsby, Matthew, Savytskyi, Mykhailo, Seegerer, Stefan, Šimkovic IV, Fedor, Sriluckshmy, P. V., Vesanen, Panu T., Nakahara, Mikio

With a growing interest in quantum technology globally, there is an increasing need for accessing relevant physical systems for education and research. In this paper we introduce a commercially available on-site quantum computer utilizing superconduc

Externí odkaz: http://arxiv.org/abs/2402.07315

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An Algorithmic Framework for Constructing Multiple Decision Trees by Evaluating Their Combination Performance Throughout the Construction Process

Autor: Tajima, Keito, Ichijo, Naoki, Nakahara, Yuta, Matsushima, Toshiyasu

Predictions using a combination of decision trees are known to be effective in machine learning. Typical ideas for constructing a combination of decision trees for prediction are bagging and boosting. Bagging independently constructs decision trees w

Externí odkaz: http://arxiv.org/abs/2402.06452

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Boosting-Based Sequential Meta-Tree Ensemble Construction for Improved Decision Trees

Autor: Maniwa, Ryota, Ichijo, Naoki, Nakahara, Yuta, Matsushima, Toshiyasu

A decision tree is one of the most popular approaches in machine learning fields. However, it suffers from the problem of overfitting caused by overly deepened trees. Then, a meta-tree is recently proposed. It solves the problem of overfitting caused

Externí odkaz: http://arxiv.org/abs/2402.06386

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