662 research outputs found
Nonexistence of multi-dimensional solitary waves for the Euler-Poisson system
No full textWe study the nonexistence of multi-dimensional solitary waves for the Euler-Poisson system governing ion dynamics. It is well-known that the one-dimensional Euler-Poisson system has solitary waves that travel faster than the ion-sound speed. In contrast, we show that the two-dimensional and three-dimensional models do not admit nontrivial irrotational spatially localized traveling waves in the L-1 space for any traveling velocity and for general pressure laws. Our results provide theoretical evidence for the stability of line solitary waves in multi-dimensional Euler-Poisson flows. We derive some Pohozaev type identities associated with the energy and density integrals. This approach is extended to prove the nonexistence of irrotational multi-dimensional solitary waves for the two-species Euler-Poisson system for ions and electrons.
A successful model of regional healthcare information exchange in Japan: Case Study in Kagawa Prefecture
No full textIn this study, we focused on analysis of healthcare data exchange over the network. For the advance of broadband capability development, many governments expect online medical information exchange between medical institutions. Japanese government also has tried to deploy ICT in the healthcare field. In Japan, many healthcare ICT projects started, but almost of all the projects face many issues and failed to continue. This situation caused us to clarify the success factor of healthcare information exchange network. For inspecting the success factors, we analyzed information access of healthcare systems in Kagawa prefecture of Japan. Kagawa prefecture is one of the most advance areas for healthcare information technology. We analyzed four medical ICT projects in Kagawa prefecture: K-MIX, Critical Pathway for Diabetes, E-prescription, and PHR. In addition, we inspected characteristics of exchanged data in the network, and stakeholder involved in these projects. This analysis lets us find various types of healthcare ICT projects. Characteristic of data processed in the projects caused differences of characteristic of the projects. On the other hand, multiple systems process same data, though the project does not share the data itself. Considering various types of medical information exchanges projects, we propose classification and standard format of exchanged data according to their characteristic are critical for efficient business deployment. --e-Health,regional healthcare information exchange,EHR
A Study on Chamberlain (侍衞) Position in the Northern Zhou in Association with the Nomadic Bureaucratic System
No full textRecent studies have pointed out the limits of understanding the history of the Northern and Southern to Sui-Tang dynasties solely within the framework of Chinese history, and there has been an academic tendency to reassess this period from the more comprehensive, Eurasian perspective. Along these lines, one should note that within the bureaucratic systems of the Northern Dynasties, there are elements that originate in nomadic bureaucratic systems. Kawamoto Yoshiaki has already pointed out the similarities between the inner court official position, neichaoguan 內朝官, of the early Northern Wei and the Mongolian keshig. On the other hand, the Western Wei and the Northern Zhou, the origin of Sui and Tang ruling classes, implemented the Six Ministries System based on the Rites of Zhou, and here, influence of the nomadic administrative system cannot be observed. However, Hirata Yōichirō has reconsidered the Twenty-four Armies System of the Western Wei, and has concluded that it descended from the nomadic military system. Furthermore, Hirata also pointed out that the close advisors, qinxin 親信, who served the authorities of the Western Wei and the Northern Zhou, were derived from the inner court bureaucrats of the early Northern Wei. Taking these points into account, one should consider the possibility that the Northern Zhou Six Ministries System also involved elements of the nomadic bureaucratic system. This paper attempts to explain the relationship between the Northern Zhou Six Ministries System and the nomadic bureaucratic system, by focusing on the imperial chamberlains (侍衞) of the Northern Wei, their development, duties, and those appointed to the position. The position of chamberlain in the Northern Zhou was not directly derived from the early Northern Wei inner court official position. Rather, it was based on elements such as the Rites of Zhou, and the imperial guard positions of the Western Wei. The main duties of the Northern Zhou chamberlains were as imperial guardsmen, and thus they were more limited than those of the Northern Wei inner court officials. However, the position also included aspects of the nomadic bureaucratic system, firstly in that the chiefs of the chamberlains consisted only of non-Chinese, and secondly, in that the children and siblings of meritorious subjects were appointed as chamberlains, who then advanced onto higher bureaucratic ranks. This shows that the Northern Zhou administered the Six Ministries System through a deft mix of the Rites of Zhou and the nomadic bureaucratic system. In addition, it became clear that the Northern Zhou prepared a career path starting with the chamberlain position for the children and siblings of meritorious subjects and that this was passed on as the Sui-Tang career path starting with the position of Weiguan 衞官. Such findings invoke the need to also consider nomadic influence within the Sui-Tang bureaucratic system
Modeling Human Behavior in Human-Robot Interactions
No full textThis interdisciplinary workshop aims to break boundaries between the researchers who develop human models (e.g., from the fields of human factors, cognitive psychology, and computational neuroscience) and roboticists who use human models in different human-robot interaction (HRI) contexts. The keynote talks, contributed submissions, and interactive discussions will focus on the questions such as: How can modeling humans help us understand and design human-robot interactions? What kinds of models are useful for which HRI contexts (physical/cognitive interactions) and purposes (behavior prediction/personalization/theory-of-mind/etc.)? What common lessons can be learned from human behavior modeling in HRI across different application domains? How can modeling humans in HRI tasks help us to better understand human cognition/behavior? By stimulating an interdisciplinary conversation around these questions, we aim to raise awareness of the benefits of modeling and expose the wider HRI community to a variety of different modeling approaches, and facilitate the HRI researchers who already engage in modeling to exchange views on methodology of modeling and best practices from diverse fields.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Human-Robot InteractionInteractive Intelligenc
Who Uses Free Trade Agreements?
No full textIt is noted that utilization of ASEAN Free Trade Agreements (FTAs) is low by international standards. In order to clarify the reasons for such low utilization, this paper investigates what kinds of Japanese affiliates in ASEAN are more likely to use FTAs in their exporting, by employing unique affiliate-level data. Our findings are as follows. First, the larger the affiliate is, or the more diversified the origins of its procurements, the more likely it is to utilize an FTA scheme in its exporting. Second, affiliates that export actively to countries with higher general tariffs are more likely to use FTAs. Third, there are clear differences in FTA utilization depending affiliates, locations and sectors.
Correction: Opportunities to implement a sustainable genomic medicine program: lessons learned from the IGNITE Network
No full textCorrection to: Genetics in Medicine 21:2019; 10.1038/s41436-018-0080-y; published online 12 July 2018
The original version of this Article contained an error in the spelling of the author Daisuke Goto, which was incorrectly given as Diasuke Goto. This has now been corrected in both the PDF and HTML versions of the Article
Changing process of projected image of Canada in Japanese package tour brochures
No full textNot peer reviewedpackage tourJALPAKprojected imageJapanese overseas travelerCanad
Motion Tracking Hands-Free HMI of Electric Wheelchair
No full textThe rise in mobility challenges due to aging populations has increased the need for innovative wheelchair technologies. Many users struggle with traditional power wheelchairs, finding them unusable and experiencing difficulties in steering. The solution, proposed by the author, is a novel side-by-side and hands-free Human-Machine Interface (HMI) for an omnidirectional electric wheelchair. It is designed to use a vision-based interface, with cameras capturing the head and torso movements of both the rider and a caregiver. Their motion intentions are interpreted and combined through shared control to produce velocity commands, enabling intuitive and collaborative navigation. This paper focuses on the hands-free HMI working principle. It analyzes how detects and processes the movements of the rider. The inputs are translated into linear and angular velocities relative to the wheelchair base, allowing navigation without using hands. Simulations validate the interface’s ability to drive the wheelchair smoothly around obstacles, aligning commands with user intentions. The system offers adjustable sensitivity to accommodate different movement thresholds to generate velocities
Changing process of projected image of Canada in Japanese package tour brochures
No full textNot peer reviewedpackage tourJALPAKprojected imageJapanese overseas travelerCanad
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