7,535 research outputs found
Improving backward stability of Sakurai-Sugiura method with balancing technique in polynomial eigenvalue problem
No full textsummary:One of the most efficient methods for solving the polynomial eigenvalue problem (PEP) is the Sakurai-Sugiura method with Rayleigh-Ritz projection (SS-RR), which finds the eigenvalues contained in a certain domain using the contour integral. The SS-RR method converts the original PEP to a small projected PEP using the Rayleigh-Ritz projection. However, the SS-RR method suffers from backward instability when the norms of the coefficient matrices of the projected PEP vary widely. To improve the backward stability of the SS-RR method, we combine it with a balancing technique for solving a small projected PEP. We then analyze the backward stability of the SS-RR method. Several numerical examples demonstrate that the SS-RR method with the balancing technique reduces the backward error of eigenpairs of PEP
Development of Highly Functionalized Tetrahydropyran Rings Via Sakurai Reaction
No full textThe reactivity of aromatic and aliphatic aldehydes was evaluated under Sakurai reaction conditions. All aldehydes were subjected to the same reaction conditions and reaction times. The only variables in the reactions were the use of aliphatic or aromatic aldehydes or the choice of bulky protecting groups on the large silyl species. Reaction efficiencies were determined by use of 1H NMR and all compounds were purified by flash column chromatography. More optimization is needed on these compounds to develop this synthetic technology
Supporting Data for Laser ablated sub-wavelength structure anti-reflection coating on an alumina lens
No full textThe images are VK4 files generated by a Keyence VKX-3000 confocal microscope. The code "Pyramid stacking.py" is a custom code written by Calvin Firth with which the images were analyzed.These are images and the code that were used to analyze the data provided for the paper "Laser ablated subwavelength structure antireflection coating on an alumina lens."Hanany, Shaul; Cray, Scott; Dietterich, Samuel; Dusing, Jan; Firth, Calvin; Koch, Jurgen; Lam, Rex; Matsumura, Tomotake; Sakurai, Haruyuki; Sakurai, Yuki; Suzuki, Aritoki; Takaku, Ryota; Wen, Qi; Wienke, Alexander; Yan, Yan. (2025). Supporting Data for Laser ablated sub-wavelength structure anti-reflection coating on an alumina lens. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/X07S-DD66
Design of counseling robot for production by 3D printer
No full textNowadays, a lot of IT personnel have psychological distress. Meanwhile, counselors to help them are lack in number. To solve the problem, we proposed a counseling agent (CA) called CRECA (context respectful counseling agent). CRECA listens to clients and promotes their reflection context respectfully namely in a context preserving way. This agent can be enhanced using a body language called 'unazuki' in Japanese, a kind of 'nodding' to greatly promote dialogue, often accompanying 'un-un' (meaning 'exactly') of Japanese onomatopoeia. This body language is expected to significantly help represent empathy or entire approval. In this paper, the agent is integrated with such a 'unazuki' or 'dialog promotion nodding' robot to continue the conversation naturally or context respectfully towards clients' further reflection. To realize such 'unazuki', the robot nods twice at each end of dialog sentence input by clients. Here, we introduce our newly developed robot that behaves human-like by an appropriate nodding behavior. The main motivation for developing a more human-like robot was the extension of application fields from IT workers' counselling to people, who suffers from more social problems such as financial debt, or anxiety of victory or defeat. For such applications, it is often very important that the agent behaves as much as possible human-like. Finally, we present the experimental evaluation results that proves such nodding is effective in counseling
Project 7 Estimation for 3D Distribution of Biological and Chemical Doses for BNCT
No full textIn case that corrections are made, overwrite the modified version in the following web page: https://www.rri.kyoto-u.ac.jp/PUB/report/PR/ProgRep2024/ProgRep2024.htmlPR7-1 Establishment of Beam-quality Estimation Method in BNCT Irradiation Field using Dual Phantom Technique (VIII)/ Y. Sakurai et al. (R6P7-1) [48]PR7-2 Biological effects of BNCT on glioma cells in 3D culture/ N. Kondo et al. (R6P7-2) [49]PR7-3 The Response After BNCT on 3D Oral Cancer Model Using Patient-Derived Cancer-Associated Fibroblasts/ K. Igawa et al. (R6P7-3) [50]PR7-4 Verfication of BNCT Effect on Hematological Cancer Cells and Dosimetry for Expansion of BNCT Cases/ S. Yoshihashi et al. (R6P7-4) [51]PR7-5 Development and evaluation of 3D gel dosimeter for the measurement of dose distribution in BNCT/ S. Hayashi et al. (R6P7-7) [52]PR7-6 Establishment of Three-dimensional Dose Distribution Estimation Method for BNCT using Radiochromic Gel Dosimeter (II)/ Y. Sakurai et al. (R6P7-8) [53]PR7-7 Measurement of Neutron Depth Distribution for Quality Assurance in Boron Neutron Capture Therapy/ M. Takada et al. (R6P7-10) [54]PR7-8 Measurement of wavelength-dependent luminescence for beam quality assurance of BNCT/ K. Tanaka et al. (R6P7-11) [55]PR7-9 Feasibility of Water/Fat Decomposition Technique Using Multi-Energy X-ray Computed Tomography for BNCT Dose Calculation/ T. Takata et al. (R6P7-12) [56
Project 6 Advancement of integrated system for dose estimation in BNCT (R3P6)
No full textIn case that corrections are made, an errata will be provided in the following webpage: https://www.rri.kyoto-u.ac.jp/PUB/report/PR/ProgRep2021/ProgRep2021.htmlPR6-1 Establishment of characterization estimation method in BNCT irradiation field using Bonner sphere and ionization chamber (V)/ Y. Sakurai et al. (R3P6-1) [53]PR6-2 Study on New Type of Neutron Energy Spectrometer for BNCT/ K. Watababe et al. (R3P6-2) [54]PR6-3 Development and demonstration of Bonner sphere spectrometer for intense neutrons/ A. Masuda (R3P6-3) [55]PR6-4 Improvement of the SOF detector system for energy-dependent discrimination and long-term stability/ M. Ishikawa et al. (R3P6-4) [56]PR6-5 First Direct Observation of Boron Dose Distribution with a Boron-added Liquid Scintillator/ A. Nohtomi et al. (R3P6-5) [57]PR6-6 Development of Absolute Epi-thermal Neutron Flux Intensity Monitor for BNCT/ I. Murata et al. (R3P6-6) [58]PR6-7 Study for microdosimetry using silicon-on-insulator microdosimeter in the BNCT irradiation field (V)/ Y. Sakurai et al. (R3P6-8) [59]PR6-8 Measurement of BNCT beam component fluence with multi imaging plate system./ K. Tanaka et al. (R3P6-10) [60]PR6-9 Development of 2D Real-Time Neutron Imaging System in the BNCT Irradiation Field/ S. Uno et al. (R3P6-11) [61]PR6-10 Measurements of Neutron Fluence and Gamma ray Distribution using Thermoluminescence Slabs/ K. Shinsho et al. (R3P6-12) [62]PR6-11 Development and evaluation of 3D gel dosimeter for the measurement of dose distribution in BNCT/ S. Hayashi, et al. (R3P6-14) [63]PR6-12 Establishment of beam-quality estimation method in BNCT irradiation field using dual phantom technique (V)/ Y. Sakurai et al. (R3P6-15) [64]PR6-13 Development of real-time thermal neutron monitor for BNCT/ H. Tanaka et al. (R3P6-16) [65]PR6-14 Quantitative Measurement of 478 keV Prompt Gamma-rays of Boron-neutron Capture Reaction with the ETCC/ T. Mizumoto et al. (R3P6-17) [66]PR6-15 Evaluation of neutron irradiation fields for semiconductor device irradiation/ H. Tanaka et al. (R3P6-19) [67]PR6-16 Optimization of Bolus Shape for Boron Neutron Capture Therapy --Examination Using Simple Shaped Phantom for Experimental Verification--/ T. Takata et al. (R3P6-20) [68]PR6-17 Annealing properties of boric acid infused PVA-GTA-I gel irradiated with neutrons/ H. Yasuda et al. (R3P6-22) [69]PR6-18 Three dimentional model for pre-clinical assessments in BNCT/ K. Igawa et al. (R3P6-23) [70
High diastereoselectivity in Hosomi-Sakurai reaction on metal-complexed acyclic enones: Role of out-of-plane coordination of Lewis acid†
No full text1063-1071Efficient diastereocontrol is achieved in
Hosomi-Sakurai reaction of flexible acyclic enones anchored on arenetricarbonylchromium
template. Relative stereochemistry of groups in the products is compared with those
obtained by allylmagnesium bromide addition followed by an anionic oxy-Cope rearrangement.
The results indicate an endo-selective conjugate addition dictated by an
out-of-plane bound Lewis acid in the Hosomi-Sakurai reaction, similar to the trend
established earlier for rigid substrate structures
Efficient and rich context representation for Web applications
No full textBringing sensor- and context-awareness to the Web promises to open new, tremendous business opportunities. However, context-awareness involves difficult problems such as modeling social / human affairs (e.g. law, personal preferences, etc.), handling incomplete information, and managing uncertainty of sensor data. We argue that fully-fledged, Semantic-Web-style reasoning in presence of uncertainty is neither always feasible, nor always necessary for a context-based Web. As an alternative, this paper proposes a highly expressive, simple, and efficient context representation for sensor-enabled Web services. Our representation is based on a syntax inspired by standard Semantics of Business Vocabulary and Business Rules (SBVR), enriched by annotations expressing prioritized modality and trust values. Using a simple example, we explain the feasibility of this approach for developing context/ambient-aware applications that adapt to changes in the environment
Embodiment matters : toward culture-specific robotized counselling
No full textIn this paper, we propose adding the traditional Japanese nodding behavior to the repertoire of social movements to be used in the context of human–robot interaction. Our approach is motivated by the notion that in many cultures, trust-building can be boosted by small body gestures. We discuss the integration of a robot capable of such movements within CRECA, our context-respectful counseling agent. The frequent nodding called “unazuki” in Japan, often accompanying the “un-un” sound (meaning “I agree”) of Japanese onomatopoeia, underlines empathy and embodies unconditioned approval. We argue that “unazuki” creates more empathy and promotes longer conversation between the robotic counsellor and people. We set up an experiment involving ten subjects to verify these effects. Our quantitative evaluation is based on the classic metrics of utterance, adapted to support the Japanese language. Interactions featuring “unazuki” showed higher value of this metrics. Moreover, subjects assessed the counselling robot’s trustworthiness and kindness as “very high” (Likert scale: 5.5 versus 3—4.5) showing the effect of social gestures in promoting empathetic dialogue to general people including the younger generation. Our findings support the importance of social movements when using robotized agents as a therapeutic tool aimed at improving emotional state and social interactions, with unambiguous evidence that embodiment can have a positive impact that warrants further exploration. The 3D printable design of our robot supports creating culture-specific libraries of social movements, adapting the gestural repertoire to different human cultures
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