58 research outputs found
Letter from Setsuo Horita to Toshiko Horita
No full textA letter from Setsuo Horita to his sister, Toshiko Horita. He recounts receiving a baseball batt and ball from their father, Chitoshi, as well as going to Japanese school.The Horita Family Papers (1940-2010, undated) collection contains documents from the Horita family, a Japanese American family from the Los Angeles area. The collection focuses on married couple Chitoshi "Harry" Horita (1896-1990) and Marue Nakashima Horita (1901-1982) and their extended family and includes records of the family's incarceration at the Poston (Colorado River) incarceration camp, research into the family's history, photographs, and correspondence
Inter-application communication during LHD consecutive short pulse discharge experiment
No full textLHD short pulse experiments are executed every three minutes. After the end of the discharge, the scientists must collect, analyze, visualize the last acquired data of the discharge, and prepare for the next discharge. From the beginning, the computer environment of the LHD (Large Helical Device) experiment has been built as a network distributed system, and various computers have been used for data acquisition or physical analysis. When one program is finished on one computer, that computer must send the results in order to the other computers to run programs. Smooth communication is required in order to finish all the tasks before the next discharge. To exchange the information among the applications running on the different computers, the authors have tried various methods, such as a commercial software to share the memory over the network, simple network file sharing method, IP multicast, web interfaces, and others. The purpose of this paper is to share our experiences of trial and error to build the network distributed systems for the consecutive plasma discharge experiments.journal articl
Application of container technology in LHD analysis system
No full textThe authors have developed AutoAna, an automatic registration system for physics data in LHD experiments. AutoAna has increased the number of data registrations and reduced the time required to complete them, making it possible to provide key data during three-minute intervals of short pulse experiments. The time reduction was achieved by running several analysis programs in parallel. However, problems arose due to this process, which could be solved by containerizing the execution environment of the analysis programs.journal articl
Automated recognition of wood used in traditional Japanese sculptures by texture analysis of their low-resolution computed tomography data
No full textThe identification of wood species used in the cultural artifacts is important in terms of their preservation and inheritance. However, a nondestructive method is required, and wood samples must be partly cut off in conventional methods such as microscopy. In this study, we constructed a novel system for wood identification using image recognition of X-ray computed tomography images of eight major species used in Japanese wooden sculptures. Texture analyses of the computed tomography images were carried out using the gray-level co-occurrence matrix, from which 15 textural features were calculated. The k-nearest-neighbor algorithm combined with cross validation was applied for classification and evaluation of the system. Input datasets with a variation in image qualities (resolution, gray level, and image size) were investigated using this novel system, and the accuracy was greater than 98 % when the input images had a certain quality level. Although there are still technical problems to be overcome, progress in the development of automated identification is extremely encouraging in that such an approach has the potential to make a valuable contribution in adding scientific species notion to the artifacts; otherwise, only the literal documents are available
Measurement of sulfur isotopes in the ore of cinnabar mine in Japan
No full textVermillion made from cinnabar ore was used for decorating the physical remains and the inner surfaces of burial facilities in ancient times. For this purpose, we measured the ratio of sulfur isotopes in the vermillion and compared the measurements with cinnabar ore collected from four mines in Japan and China, and to try and find the source of the vermillion used in ancient times. There are many cinnabar mines in Japan. Therefore, the aim of the present study is to measure the ratio of sulfur isotope of cinnabar ore in Japanese mines and to compare the ratio with mines in China. Sulfur isotope ratios in cinnabar ore collected in north, east and center regions in Hokkaido is about −4％, while the ratios of ＋4 to ＋9％ are measured in the Hidaka and south regions of Hokkaido. While the ratio of ore from the Niu mine in Mie measured −8.9％. While, the ratio of ore collected in the Kamio and Yamato mines in Nara are −3.0 and −3.1％, respectively. The ore from Tokushima mines measured −3.6 to −4.0％, with −5.3 to −5.8％ from the Ehime mines, and −2.4％ from the Kochi mines. In Kyushu, the ratios are -3.5 to -6.3 from the Oita mine, ＋1.9 from the Nagasaki mine, and -3.6 from the Kagoshima mine. From the present study, the ratio of sulfur isotopes in the cinnabar ore collected from Hokkaido mines is dependant on the mine. In contrast, the ratio in ore collected from the Niu mine shows significantly different from the ore in other mines. Therefore, it is concluded that the vermillion made from cinnabar ore collected from Niu mine can be determined from the measurement of the sulfur isotope ratio.application/pdfdepartmental bulletin pape
A Preliminary Study on Structure of the Wooden Printing Blocks in Japan - Based on the 3D Measurement Method ‐
No full textRemote device control and monitor system for the LHD deuterium experiments
No full text0000-0001-6388-4489Upon beginning the LHD deuterium experiment, the opportunity for maintenance work in the torus hall will be conspicuously reduced such that all instruments must be controlled remotely. The LHD data acquisition (DAQ) and archiving system have been using about 110 DAQ front-end, and the DAQ central control and monitor system has been implemented for their remote management. This system is based on the “multi-agent” model whose communication protocol has been unified. Since DAQ front-end electronics would suffer from the “single-event effect” (SEE) of D-D neutrons, software-based remote operation might become ineffective, and then securely intercepting or recycling the electrical power of the device would be indispensable for recovering from a non-responding fault condition. In this study, a centralized control and monitor system has been developed for a number of power distribution units (PDUs). This system adopts the plug-in structure in which the plug-in modules can absorb the differences among the commercial products of numerous vendors. The combination of the above-mentioned functionalities has led to realizing the flexible and highly reliable remote control infrastructure for the plasma diagnostics and the device management in LHD.journal articl
Brownian sheet and reflectionless potentials
No full textIn this paper, the investigation into stochastic calculus related with the KdV equation, which was initiated by S. Kotani [Construction of KdV-flow on generalized reflectionless potentials, preprint, November 2003] and made in succession by N. Ikeda and the author [Quadratic Wiener functionals, Kalman-Bucy filters, and the KdV equation, Advanced Studies in Pure Mathematics, vol. 41, pp. 167-187] and S. Taniguchi [On Wiener functionals of order 2 associated with soliton solutions of the KdV equation, J. Funct. Anal. 216 (2004) 212-229] is continued. Reflectionless potentials give important examples in the scattering theory and the study of the KdV equation; they are expressed concretely by their corresponding scattering data, and give a rise of solitons of the KdV equation. Ikeda and the author established a mapping [psi] of a family of probability measures on the one-dimensional Wiener space to the space [Xi]0 of reflectionless potentials. The mapping gives a probabilistic expression of reflectionless potential. In this paper, it will be shown that [psi] is bijective, and hence and [Xi]0 can be identified. The space [Xi]0 was extended to the one [Xi] of generalized reflectionless potentials, and was used by V. Marchenko to investigate the Cauchy problem for the KdV equation and by S. Kotani to construct KdV-flows. As an application of the identification of and [Xi]0 via [psi], taking advantage of the Brownian sheet, it will be seen that convergences of elements in realizes the extension of [Xi]0 to [Xi].Brownian sheet Reflectionless potential Ornstein-Uhlenbeck process
Where Are We Now and Where Should We Head for? A Reflection on the Place of East Asia on the Map of Socio-Legal Studies
No full textCollaborative Research Networks (“CRNs”) developed to encourage and facilitate and collaboration between scholars with shared academic interests. CRN33 (East Asia) is fairly new. This article, which is based on a speech given by the author, examines the status of East Asia in socioeconomic literature, explores the growing prevalence of East Asia as a topic in general theory-building in socio-legal studies, and suggests methods for placing East Asia in a more central position for future socio-legal scholarship. The author emphasizes that scholars in the field of East Asian legal studies should work harder to introduce those outside the field to the work being done on East Asia, and that part of this can be accomplished by engaging in theory-building inside the field. Scholars in the East Asia field ought to present works in terms of concepts and theories not bound by regional boundaries so that outside scholars can better recognize the relevance of our works to theirs. Scholars in the field should also seek to present our works to non-area specialists and try to expand their own group
- …
