Kodaira, Japan
Kodaira, Japan

Tsuda College is a private women's college in Kodaira, Tokyo. The college was founded in 1900 by Tsuda Umeko as Joshi Eigaku Juku.The name was later changed to Tsuda Eigaku Juku and then Tsuda Juku Senmon Gakko and finally Tsuda Juku Daigaku in 1948. It used to be called as women's Tokyo University and it has been well known as one of the oldest private women's college and has contributed to the high education of Japanese women in early modern Japan. Wikipedia.

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Akahori T.,University of Shizuoka | Ibrahim S.,University of Victoria | Kikuchi H.,Tsuda College | Nawa H.,Osaka University
Selecta Mathematica, New Series | Year: 2013

We study the energy-critical focusing nonlinear Schrödinger equation with an energy-subcritical perturbation. We show the existence of a ground state in the four or higher dimensions. Moreover, we give a sufficient and necessary condition for a solution to scatter, in the spirit of Kenig and Merle (Invent Math 166:645-675, 2006). © 2012 Springer Basel AG.

Fukuizumi R.,Tohoku University | Selem F.H.,University of Reims Champagne Ardenne | Selem F.H.,University Blaise Pascal | Kikuchi H.,Hokkaido University | Kikuchi H.,Tsuda College
Nonlinearity | Year: 2012

In this paper, we study the stability of standing waves for the nonlinear Schrödinger equation on the unit ball in R N with Dirichlet boundary condition. We generalize the result of Fibich and Merle (2001 Physica D 155 13258), which proves the orbital stability of the least-energy solution with the cubic power nonlinearity in two space dimension. We also obtain several results concerning the excited states in one space dimension. Specifically, we show the linear stability of the first three excited states and we give a proof of the orbital stability of the kth excited state, restricting ourselves to the perturbation of the same symmetry as the kth excited state. Finally, our numerical simulations on the stability of the kth excited state are presented. © 2012 IOP Publishing Ltd & London Mathematical Society.

Mori H.,Kyoto University | Mori H.,Tsuda College | Nakayama T.,Kyoto University
PLoS ONE | Year: 2013

Context: Although qualitative studies are becoming more appreciated in healthcare, the number of publications of quality studies remains low. Little is known about the frequency and characteristics of citation in qualitative studies. Objective: To compare the academic impact of qualitative studies to that of two quantitative studies: systematic reviews and randomized controlled trials. Methods: Publications in BMJ between 1997 and 2006 (BMJ's median impact factor was 7.04 during this period) employing qualitative methods were matched to two quantitative studies appearing the same year using PubMed. Using Web of Science, citations within a 24-month publication period were determined. Additionally, three hypotheses were examined: qualitative studies are 1) infrequently cited in original articles or reviews; 2) rarely cited by authors in non-English-speaking countries; and 3) more frequently cited in non-medical disciplines (e.g., psychology or sociology). Results: A total of 121 qualitative studies, 270 systematic reviews, and 515 randomised controlled trials were retrieved. Qualitative studies were cited a total of 1,089 times, with a median of 7.00 times (range, 0-34) for each study. Matched systematic reviews and randomized controlled trials were cited 2,411times and 1,600 times, respectively. With respect to citing documents, original articles and reviews exceeded 60% for each study design. Relative to quantitative studies, qualitative studies were cited more often by authors in English-speaking countries. With respect to subject area, medical disciplines were more frequently cited than non-medical disciplines for all three study designs (>80%). Conclusion: The median number of citations for qualitative studies was almost the same as the median of BMJ's impact factor during the survey period. For a suitable evaluation of qualitative studies in healthcare, it will be necessary to develop a reporting framework and include explicit discussions of clinical implications when reporting findings. Coordination between researchers and editors will be needed to achieve this goal. © 2013 Mori, Nakayama.

Toyama N.,Tsuda College
Infant Behavior and Development | Year: 2013

During the weaning period, infants are not skilled at self-feeding and caregivers play a prominent role in feeding. Therefore, solid feeding is an inherently collaborative and interactive process between caregivers and infants. The present study examined how caregivers and infants coordinate to construct solid feeding interactions, as an analysis of naturalistic longitudinal observations of three Japanese mother-infant dyads. The main results were as follows. After 2 or 3 months post-weaning, mothers' arm movements became non-fluid while feeding children. This non-fluidity was associated with rapid changes in the movement patterns of the mother's arms and the child's mouth. Compared to the development of children's mouth movements, mothers' arm movements developed quickly. This imbalance in the pace of change may have been one cause of non-fluency. While feeding, even though mothers did not eat the children's food, they frequently moved their mouths as if they were eating. The frequency of this maternal behavior differed according to their feeding styles, and mothers' movement patterns corresponded well with their babies' mouth movements. These findings clarify the importance of mothers' eating-like mouth movements for the weaning process. © 2013 Elsevier Inc.

Conway M.,Japan National Institute of Information and Communications Technology | Kawazoe A.,Tsuda College | Chanlekha H.,Japan National Institute of Information and Communications Technology | Collier N.,Japan National Institute of Information and Communications Technology
Journal of Medical Internet Research | Year: 2010

Background: In recent years, there has been a growth in work on the use of information extraction technologies for tracking disease outbreaks from online news texts, yet publicly available evaluation standards (and associated resources) for this new area of research havebeen noticeably lacking. Objective: This study seeks to create a "gold standard" data set against which to test how accurately disease outbreak information extraction systems can identify the semantics of disease outbreak events. Additionally, we hope that the provision of an annotation scheme (and associated corpus) to the communitywill encourage open evaluation in this new and growing application area. Methods: We developed an annotation scheme for identifying infectious disease outbreak events in news texts. An event-in the context of our annotation scheme-consists minimally of geographical (eg, country and province) and disease name information. However, the scheme also allows for the rich encoding of other domain salient concepts (eg,international travel, species, and food contamination). Results: The work resulted in a 200-document corpus of event-annotated disease outbreak reports that can be used to evaluate the accuracy of event detection algorithms (in this case, for the BioCaster biosurveillance online news information extraction system). In the 200 documents, 394 distinct events were identified (mean 1.97 events per document, range 0-25 events per document). We also provide a download script and graphical user interface (GUI)-based event browsing software to facilitatecorpus exploration. Conclusion: In summary, we present an annotation scheme and corpus that can be used in the evaluation of disease outbreak event extraction algorithms. The annotation scheme and corpus were designed both with the particular evaluation requirements of the BioCaster system in mind as well as the wider need for further evaluation resources in this growing research area.

Miyakoda H.,Tsuda College
Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH | Year: 2013

In this demonstration, we present the auditory-visual pronunciation system that we have developed. One of the key features of this system is that it employs easy-to-understand visuals of the speech organ that can be seen from different angles. In addition, the internal organs in movement can also be presented by changing the mode to transparent. Furthermore, unlike most systems that can present only the ideal model movements of the speech organs, our system allows users to freely adjust the tongue and jaw movements by controllers. This allows instructors, for example, to visually indicate and point out the deviant movement(s) of the learners so that the learners themselves can understand their present state (i.e. problems) with the help of visual information and feedback. Copyright © 2013 ISCA.

Miyakoda H.,Tsuda College
Clinical Linguistics and Phonetics | Year: 2014

There is general agreement in the literature that the ability to recognize that words are made up of "smaller phonological units" within the phonological hierarchy is a prerequisite for reading, however, there is still much debate as to which specific units are important. Many studies dealing with Japanese phonological development have been conducted, but most deal mainly with the mora unit, and few actually focus on other prosodic levels. In this paper, we will focus on the prosodic development of Japanese, with particular attention to the relationship of the different prosodic levels, namely, that of the foot, syllable and mora. The result of the reversal tasks seems to imply that the relationship between the foot and syllable units plays a role in the phonological processing of Japanese, implying the importance of focusing on phonological units other than the mora in order to correctly assess a child's phonological processing ability. © 2014 Informa UK Ltd. All rights reserved: reproduction in whole or part not permitted.

Nakano F.,Gakushuin University | Sadahiro T.,Tsuda College
Fundamenta Informaticae | Year: 2012

This paper studies the dimer model on the dual graph of the square-octagon lattice, which can be viewed as the domino tilings with impurities in some sense. In particular, under a certain boundary condition where only one impurity is contained, we give an exact formula representing the probability of finding an impurity at a given site in a uniformly random dimer configuration in terms of simple random walks on the square lattice.

Kurihara K.,Tsuda College
ACM International Conference Proceeding Series | Year: 2015

Gamification is the use of game elements and game design techniques in non-game contexts. Serious games is the use of complete games for non-entertainment purposes. A major criticism of them is that it is difficult to realize an appropriate game balance and fun experience due to including non-game contexts. Here we propose the peripheral concept of toolification of games (ToG) defined as "achieving non-game purposes in the redundant spaces of existing games." ToG includes branded, hot-start, avoidable, performable, and contextualisable features, which allow us to avoid the aforementioned problem. We discuss the characteristics and the potential of ToG with self-produced examples including Tetris 3D Modeler, with which the user can design 3D models simply by playing 3D Tetris, as well as Coins for Two, which allows the user to raise money for charity simply by playing Super Mario Bros.

Shigyo Y.,Tsuda College
Journal of Physics A: Mathematical and Theoretical | Year: 2016

We study the series expansion of the tau function of the BKP hierarchy applying the addition formulae of the BKP hierarchy. Any formal power series can be expanded in terms of Schur functions. It is known that, under the condition τ (x) ≠ 0, a formal power series τ(x) is a solution of the KP hierarchy if and only if its coefficients of Schur function expansion are given by the so called Giambelli type formula. A similar result is known for the BKP hierarchy with respect to Schurs Q-function expansion under a similar condition. In this paper we generalize this result to the case of τ (0) = 0. © 2016 IOP Publishing Ltd Printed in the UK.

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