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An Explanatory Study Approach,Using Machine Learning to Forecast Solar Energy Outcome

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Journal of Energy and Power Engineering 2022年第2期16卷 81-89页

作者： Agada Ihuoma Nkechi nagata Yasunori Department of Electrical and Electronics Engineering University of the RyukyusOkinawa 903-0213Japan

AI(artificial intelligence)techniques play a crucially important role in predicting the expected energy outcome and its performance,analysis,modeling and control of renewable *** energy usage has grown exponentially over the *** the face of global energy consumption and increased depletion of most fossil fuel,the world is faced with the challenges of meeting the ever-increasing energy demands,also utility companies who provide solar energy have a challenge of unstable input of solar energy to the grid due to its intermittent nature,unlike other sources,hence the difference between expected generation and actual generation,demand and supply can lead to an unbalanced ***,incorporating accurately machine learning technology to predict the expected outcome of solar energy from the intermittent solar radiation will be crucial to keep a balance grid operation between supply and demand,production planning and energy management especially during installations of a photovoltaic power ***,one of the major problems of forecasting is the algorithms used to control,model,and predict performances of the energy systems which are complicated and involve large computer power,differential equations,and time *** having unreliable data(poor quality)for solar radiation over a geographical location as well as insufficient long series can be a bottleneck to *** overcome these problems,we employ the Anaconda Navigator(Jupyter Notebook)for machine learning which can combine large amounts of data with fast,iterative processing and intelligent algorithms allowing the software to learn automatically from patterns or features to predict the performance and outcome of Solar Energy which in turn enables the balance between supply and demand on loads,efficient operation of the utility company as well as enhances power production planning and management.

关键词： AI backward elimination data mining machine learning linear regression solar energy.

Exposure of Phosphatidylserine to the Cell Surface

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Exposure of Phosphatidylserine to the Cell Surface

Growth factors recovering alveolar bone defects in periodontitisToshihiko nagata

第十一届全国免疫学学术大会

作者： Shigekazu nagata Biochemistry & Immunology Immunology Frontier Research Center Osaka University

Phosphatidylserine(Ptd Ser),one of most abundant phospholipids in eukaryotic plasma membranes,is usually kept at the inner leaflets of plasma membranes by the action of ATP-dependent enzyme called"flippase".Ptd Ser is scrambled by a scramblase(s)between the inner and outer leaflets of the plasma membranes in various biological processes such as apoptosis and activation of *** Ptd Ser,thus exposed to the cell surface,works

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Growth factors recovering alveolar bone defects in periodont...

Direct Observation of Thermoelectric Magnetic Convection in Unidirectionally Solidified Al-Cu Alloys

第十次全国牙周病学学术会议

作者： Toshihiko nagata Department of Periodontology and Endodontology Institute of Health BiosciencesUniversity of Tokushima Graduate School

Periodontitis is a chronic inflammatory disease with alveolar bone *** the process of bone destruction,increase of osteoclast activity and/or decrease of osteoblast activity may progress with the change of RANKL-OPG r...

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Journal of Iron and Steel Research International 2012年第S1期19卷 34-39页

作者： Hideyuki Yasuda Keisuke Inoue Yudai Minami tomoya Nagira Masato Yoshiya Kentaro Uesugi Keiji Umetani Department of Adaptive Machine Systems Osaka UniversityOsaka 565-0871Japan Japan Synchrotron Research Institute/SPring-8 Hyogo 679-5198Japan

This study performed the time-resolved and in-situ observation of unidirectional solidification of A1-Cu and Sn-Bi alloys under a static magnetic field up to 0.45 *** the case of Sn-Bi alloy,the static magnetic field reduced the local convection around the primary dendrite *** thermoelectric convection was *** the other hand,the thermoelectric convection was clearly observed in Al-Cu *** observed convection was consistently explained by the thermoelectric magnetic *** to a simplified model,the thermoelectric magnetic convection can be induced if the difference in the thermoelectric power between the solid and the liquid phases is in the order of 1 μV/K and temperature gradient is several K/mm.

关键词： static magnetic field natural convection thermoelectric effect dendrite

At wavelength coherent scatterometry microscope using high-order harmonics for EUV mask inspection

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International Journal of Extreme Manufacturing 2019年第3期1卷 1-12页

作者： Yutaka nagata Tetsuo Harada Takeo Watanabe Hiroo Kinoshita Katsumi Midorikawa RIKEN Center for Advanced Photonics RIKEN2-1 HirosawaWako Saitama 351-0198Japan Center for EUV Lithography Laboratory of Advanced Science and Technology for IndustryUniversity of HyogoKamigoriHyogo 678-1205Japan

In this review,we describe our research on the development of the 13.5 nm coherent microscope using high-order harmonics for the mask inspection of extreme ultraviolet(EUV)*** lithography is a game-changing piece of technology for high-volume manufacturing of commercial *** top manufacturers apply EUV technology for fabricating the most critical layers of 7 nm *** and inspection of defect-free masks,however,still remain critical issues in EUV ***,in our pursuit for a resolution,we have developed the coherent EUV scatterometry microscope(CSM)system with a synchrotron radiation(SR)source to establish the actinic metrology,along with inspection *** intensity and phase images of patterned EUV masks were reconstructed from diffraction patterns using ptychography *** expedite the practical application of the CSM,we have also developed a standalone CSM,based on high-order harmonic generation,as an alternative to the *** the application of a coherent 13.5 nm harmonic enabled the production of a high contrast diffraction pattern,diffraction patterns of sub-100 ns size defects in a 2D periodic pattern mask could be *** of intensity and phase images from diffraction patterns were also performed for a periodic line-and-space structure,an aperiodic angle edge structure,as well as a cross pattern in an EUV mask.

关键词： high-order harmonics coherent EUV light EUV lithography coherent EUV scatterometry microscope synchrotron radiation EUV mask inspection

NF-κB and ERK-signaling pathways contribute to the gene expression induced by cag PAI-positive-Helicobacter pylori infection

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World Journal of Gastroenterology 2005年第39期11卷 6134-6143页

作者： Wataru Shibata Yoshihiro Hirata Haruhiko Yoshida Motoyuki Otsuka Yujin Hoshida Keiji Ogura Shin Maeda tomoya Ohmae Ayako Yanai Yuzo Mitsuno Naohiko Seki Takao Kawabe Masao Omata Department of Gastroenterology Graduate School of Medicine University of TokyoJapan Department of Functional Genomics Graduate School of Medicine University of ChibaJapan

AIM： To elucidate the sequential gene expression profile in AGS cells co-cultured with wild-type Helicobacter pylori （H pylon） as a model of Hpylori-infected gastric epithelium, and to further examine the contribution of cag-pathogenicity islands （cagPAI）-coding type IV secretion system and the two pathways, nuclear factor kappa B （NF-κB） and extracellular signal-regulated kinases （ERK） on wild-type Hpylori-induced gene expression. METHODS： Gene expression profiles induced by Hpylori were evaluated in AGS gastric epithelial cells using cDNA microarray, which were present in the 4600 independent clones picked up from the human gastric tissue. We also analyzed the contribution of NF-κB and ERK signaling on H pylori-induced gene expression by using inhibitors of specific signal pathways. The isogenic mutant with disrupted cagE （△cagE） was used to elucidate the role of cagPAI-encoding type IV secretion system in the gene expression profile. RESULTS： According to the expression profile, the genes were classified into four clusters. Among them, the clusters characterized by continuous upregulation were most conspicuous, and it contained many signal transducer activity-associated genes. The role of cagPAI on cultured cells was also investigated using isogenic mutant cagE, which carries non-functional cagPAI. Then the upregulation of more than 80% of the induced genes （476/566） was found to depend on cagPAI. Signal transducer pathway through NF-κB or ERK are the major pathways which are known to be activated by cagPAI-positive H pylori. The role of these pathways in the whole signal activation by cagPAI-positive H pyloriwas analyzed. The specific inhibitors against NF-κB or ERK pathway blocked the activation of gene expression in 65% （367/566） or 76% （429/566） of the genes whose activation appealed to depend on cagPAI. CONCLUSION： These results suggest that more than half of the genes induced by cayPAI-positive H pylori depend on NF-κB and ERK signaling activation, and thes

关键词： Helicobacter pylort, Cag-pathogenicity islands cDNA microarray, Cluster analysis Signal transduction

Structures of Stoichiometric Sodium Oxide Cluster Cations Studied by Ion Mobility Mass Spectrometry

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Chinese Journal of Chemical Physics 2019年第2期32卷 193-199,I0002页

作者： Motoyoshi Nakano Yudai Ishimura Riki Hotta Daiki Hebiguchi Toshiaki nagata Fuminori Misaizu Institute for Excellence in Higher Education Tohoku University 41 Kawauchi Aoba-ku Sendai 980-8576 Japan Department of Chemistry Graduate School of Science Tohoku University 6-3 Aoba Aramaki Aoba-ku Sendai 980-8578 Japan

Structures of stable compositions of sodium oxide cluster cations (NanOm+,n≤11) have been investigated by ion mobility mass spectrometry. Stoichiometric compositions series, Na(Na2O)(n-1)/2^+(n=3, 5, 7, 9, and 11), were observed as stable composition series, and NaO(Na2O)(n-1)/2^+ series (n=5, 7, 9, and 11) were observed as secondary stable series in the mass spectra. To assign the structures of these cluster ion series, collision cross sections between the ions and helium buffer gas were determined experimentally from the ion mobility measurements. Theoretical collision cross sections were also calculated for optimized structures of these compositions. Finally, the structures of Na(Na2O)(n-1)/2^+ and NaO(Na2O)(n-1)/2^+ were assigned to those having similar structural frames for each n except for n=9. All bonds in the assigned structures of Na(Na2O)(n-1)/2^+ were between sodium and oxygen. On the other hand, there was one O-O bond in addition to Na-O bonds in NaO(Na2O)(n-1)/2^+. This result indicates that NaO(Na2O)(n-1)/2^+ have a peroxide ion (O22-) as a substitute for an oxide ion (O2-) of Na(Na2O)(n-1)/2^+. As a result, both stable series, Na(Na2O)(n-1)/2^+ and NaO(Na2O)(n-1)/2^+, are closed-shell compositions. These closed-shell characteristics have a strong influence on the stability of sodium oxide cluster cations.

关键词： Sodium oxide cluster Structure Ion mobility mass spectrometry

An Adaptive Response Compensation Technique for the Constant-Current Hot-Wire Anemometer

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Open Journal of Fluid Dynamics 2013年第2期3卷 95-108页

作者： Soe Minn Khine tomoya Houra Masato Tagawa Department of Mechanical Engineering Nagoya Institute of Technology Nagoya Japan

An adaptive response compensation technique has been proposed to compensate for the response lag of the constant-current hot-wire anemometer (CCA) by taking advantage of digital signal processing technology. First, we have developed a simple response compensation scheme based on a precise theoretical expression for the frequency response of the CCA (Kaifuku et al. 2010, 2011), and verified its effectiveness experimentally for hot-wires of 5 μm, 10 μm and 20 μm in diameter. Then, another novel technique based on a two-sensor probe technique—originally developed for the response compensation of fine-wire thermocouples (Tagawa and Ohta 1997;Tagawa et al. 1998)—has been proposed for estimating thermal time-constants of hot-wires to realize the in-situ response compensation of the CCA. To demonstrate the usefulness of the CCA, we have applied the response compensation schemes to multipoint velocity measure- ment of a turbulent wake flow formed behind a circular cylinder by using a CCA probe consisting of 16 hot-wires, which were driven simultaneously by a very simple constant-current circuit. As a result, the proposed response compensation techniques for the CCA work quite successfully and are capable of improving the response speed of the CCA to obtain reliable measurements comparable to those by the commercially-available constant-temperature hot-wire anemometer (CTA).

关键词： Flow Measurement Hot-Wire Anemometer Turbulent Flow Constant-Current Hot-Wire Anemometer Response Compensation Frequency Response Time-Constant Multipoint Measurement Digital Signal Processing

Combining Motor Imagery and Action Observation with Vibratory Stimulation Increases Corticomotor Excitability in Healthy Young Adults

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Journal of Behavioral and Brain Science 2022年第5期12卷 177-195页

作者： Nodoka Kimura tomoya Furuta Gen Miura Eiichi Naito Center for Information and Neural Networks (CiNet) Advanced ICT Research Institute National Institute of Information and Communications Technology (NICT) Osaka Japan Graduate School of Frontier Biosciences Osaka University Osaka Japan

Vibratory stimulation but also motor imagery and action observation can induce corticomotor modulation, as a bottom-up stimulus and top-down stimuli, respectively. However, it remains unknown whether the combination of motor imagery, action observation, and vibratory stimulation can effectively increase corticomotor excitability. This study aimed to investigate the effect of motor imagery and/or action observation, in the presence or absence of vibratory stimulation, on the corticomotor excitability of healthy young adults. Vibratory stimulation was provided to the palm of the right hand. Action observation consisted in viewing a movie of someone else’s finger flexion and extension movements. The imagery condition required the participants to imagine they were moving their fingers while viewing the movie and attempting to move their fingers in accordance with the movie. Eleven right-handed healthy young adults were asked to perform six conditions randomly: 1) vibratory stimulation, imagery, and action observation, 2) vibratory stimulation and action observation, 3) vibratory stimulation and viewing of a blank screen, 4) imagery and action observation, 5) action observation, and 6) viewing of a blank screen. Single-pulse transcranial magnetic stimulation was conducted to assess corticomotor excitability and the peak-to-peak amplitude of the motor evoked potentials. The results showed that vibratory stimulation increases corticospinal excitability. The findings further revealed that performing motor imagery while viewing finger movement is more effective at inducing an augmentation of corticomotor excitability compared to action observation alone. Thus, the combination of motor imagery, action observation, and vibratory stimulation can effectively augment corticomotor excitability.

关键词： Motor Evoked Potential Transcranial Magnetic Stimulation Vibratory Stimulation Motor Imagery Action Observation