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Search Results: 1 - 10 of 2260 matches for " Chieko Kato "
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Color Barrier Free Displays in Disaster Situations  [PDF]
Kensei Tsuchida, Chieko Kato, Toshiaki Nagshima
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.42005

Concerning color barrier free, there have been many research studies and an increasing interest in it. For example, to expand activities for the promotion of colorblind-friendly designs not only among scientists but also among industrial products and public facilities, the non-profit organization CUDO (Color Universal Design Organization) was established in 2004. However, there has been very little research of this type focusing on disaster situations. From their experiences volunteering in reconstruction support for victims of the 2011 tsunami, the authors came to recognize the importance for both non-colorblind and colorblind people to notice and distinguish emergency escape notifications, cautions and passage maps quickly and accurately. Therefore this research is aimed at the realization of color barrier free displays in disaster situations. Initially, requirements for color barrier free displays in disaster situations were analyzed. Four desirable criteria were derived as a result: “eye-catching”, “instantly-readable”, “unmistakable” and “stable”. In order to evaluate given signs from the viewpoint of the above criteria, evaluation experiment systems for displays in disaster situations were developed. With the evaluation experiment systems it would be possible to design effective signs and maps as color barrier free displays in disaster situations.

Evaluation of Rugby Players’ Psychological-Competitive Ability by Utilizing the Analytic Hierarchy Process  [PDF]
Koichiro Aoki, Minoru Uehara, Chieko Kato, Hiroyuki Hirahara
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.412010
Abstract: The Analytic Hierarchy Process (AHP) is a decision-making support method for selecting a solution from alternatives based on a number of evaluation criteria. This method has also been utilized in recent years to evaluate athletes’ competitive ability regarding their physical, technical, and mental aspects. Therefore, this study has sought to develop an evaluation index of rugby players’ psychological-competitive ability as their mental aspects. Initially, a survey on sixty-seven male university rugby players was conducted using the Diagnostic Inventory of Psychological-Competitive Ability (DIPCA.3) for Athletes. Next, a rugby coach was asked in an interview coach’s to rank five factors of DIPCA.3. After that, total evaluation values of each rugby player were calculated using the DIPCA.3 scores, the coach’s ranking, and AHP. The rugby players were divided into two groups, those with high or low DIPCA3 scores. Then, members in each of these two groups were divided again into two groups, for high or low total evaluation values of AHP. Comparing the high and low groups from the total evaluation values, the proportion of rugby players in the high level group, who were regular players and had much experience participating in national competitions, was significantly larger among the high group than the low group. The results of this study suggested that the total evaluation value calculated with AHP was more effective than the total scores of DIPCA.3 for evaluation of rugby players’ mental aspects.
A Consideration on Emotional Topology: Verbal Data Processing and Representation Applied to Athlete Statements  [PDF]
Koichiro Aoki, Hiroyuki Hirahara, Chieko Kato, Kensei Tsuchida
Psychology (PSYCH) , 2018, DOI: 10.4236/psych.2018.94054
Abstract: In order to analyze emotional state and movement for desirable life, we considered a topological analysis of mind for the representative people whom were, in this case, athletes. The utterances were acquired from online articles that included statements they made during interviews. The sampled data was processed with TF-IDF, BLSOM, and fuzzy clustering technique. The resultant mapping provides a typical emotional state and movement in the extracted axes so that one can discuss the athletes’ psychological transition on this map. The proposed procedure was significantly effective at presenting the player’s emotional interest and motivation.
A Consideration of Emotional Topology: Representing Psychological Transitions on a Two-Dimensional Map  [PDF]
Koichiro Aoki, Hiroyuki Hirahara, Chieko Kato, Kensei Tsuchida
Psychology (PSYCH) , 2018, DOI: 10.4236/psych.2018.97111
Abstract: Qualitative verbal and text data such as narrations and descriptions can include additional information about a subject’s spiritual response or deep psyche than questionnaires as quantitative data. Therefore, in the previous studies, various analysis methods have been developed to clarify and visualize the subject’s mental state based on these data. The present study focuses on the sequential transitions of the visualization results from our previous study. The purpose of this study was to reveal and visualize the transition patterns of the subjects’ mental states by analyzing their utterances. The mental changes were expressed with trajectories in two-dimensional space in which the relationship between various emotions was represented with self-organizing maps (SOM) as analyzed in the previous study. The present study demonstrated the modal patterns of mental changes among the subject groups by clustering the subjects. These patterns were visualized on the two-dimensional space composed of psychological evaluation axes, thus the visualization results were interpreted in terms of psychology. It was concluded that the group’s tendencies in terms of mental changes can be comprehended by noting on the transition of the mental states.
Mental Health for Japanese People Posted Overseas  [PDF]
Chieko Kato, Satoshi Yoshinuma, Koichiro Aoki, Fumiko Goto, Toshihiro Yoshizumi, Takehide Goto, Kensei Tsuchida
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.42006

There are an increasing number of Japanese workers living in foreign countries these days, due to globalization. The purpose of this study is to find out what kind of stress people are facing when working in China, and how they go about coping with it. Even if a person experiences stress, what is important is how he copes and deals with it in a positive way. Changing a person’s cognitive thinking and how one reacts to different situations is important for people working in foreign countries. Communication, becoming involved in various activities and opening up to others will help people to cope with stress and be able to accept the culture and customs of the country in which they are living.

Evaluation of Layouts for Braille Guidance Blocks under Different Situations in Sports Facilities  [PDF]
Chieko Kato, Toshiaki Nagashima, Shogo Komatsu, Shogo Matsumoto, Hideo Shibutani, Koichiro Aoki, Kensei Tsuchida
Psychology (PSYCH) , 2019, DOI: 10.4236/psych.2019.104038
Abstract: This study made pedestrian models and layouts of Braille guidance blocks based on an interview with a goalball player and previous studies in order to determine appropriate arrangements in sports facilities. A simulation on walking efficiency was conducted under different conditions combining different situations of spectators’ moving with different layouts. There are two types of patterns of moving objects: Pattern-A, in which only visually impaired athletes are allowed to move on the floor, and Pattern-A+B, in which both visually impaired athletes and sighted spectators are allowed to move on the floor. In addition, there are two types of layouts of Braille guidance blocks: Layout-1 is a linear arrangement of them, and Layout-2 is a rounded linear arrangement of them. The results of the simulation showed that there were no significant differences of walking efficiency between Layout-1 and Layout-2 under the conditions of Pattern-A or Pattern-A+B. Furthermore, there were no significant differences of walking efficiency between Pattern-A and Pattern-A+B under Layout-1 or Layout-2. These results show the effectiveness of the linear arrangement of Braille guidance blocks in sports facilities for visually and non-visually impaired people.
Development of Online Counseling System and Usability Evaluation
Chieko Kato,Yasunori Shiono,Takaaki Goto,Kensei Tsuchida
Journal of Emerging Technologies in Web Intelligence , 2011, DOI: 10.4304/jetwi.3.2.146-153
Abstract: Rising prevalence of mental health diseases is a serious problem for society. Some areas in Asia have no medical facilities and proper mental health care is unavailable. To cope with these problems, application of ICT for mental health services has been recognized as one of the effective approaches. Therefore, we have been studying and putting into practice online counseling for people assigned overseas. We constructed a system using agile software development for those assigned overseas in Asia. The first step involved developing a prototype system based on system requirements after we repeatedly discussed system development with people in charge of a clinic. Next, we conducted interviews about the online counseling system. We also discussed and analyzed the interviews. Finally, we completed the online Web counseling system by repeatedly discussing possible improvements with the clinic and then incorporating the changes in the system. Moreover, we evaluated the system by conducting a survey in the form of a questionnaire. Since we developed an effective online counseling system using statistical methods, this paper reports on the construction and usability evaluation of the system.
Simulation of a Daily Precipitation Time Series Using a Stochastic Model with Filtering  [PDF]
Chieko Gomi, Yasuhisa Kuzuha
Open Journal of Modern Hydrology (OJMH) , 2013, DOI: 10.4236/ojmh.2013.34025
Abstract: After we modified raw data for anomalies, we conducted spectral analysis using the data. In the frequency, the spectrum is best described by a decaying exponential function. For this reason, stochastic models characterized by a spectrum attenuated according to a power law cannot be used to model precipitation anomaly. We introduced a new model, the e-model, which properly reproduces the spectrum of the precipitation anomaly. After using the data to infer the parameter values of the e-model, we used the e-model to generate synthetic daily precipitation time series. Comparison with recorded data shows a good agreement. This e-model resembles fractional Brown motion (fBm)/fractional Lévy motion (fLm), especially the spectral method. That is, we transform white noise Xt to the precipitation daily time series. Our analyses show that the frequency of extreme precipitation events is best described by a Lévy law and cannot be accounted with a Gaussian distribution.
Functional Alterations in Neural Substrates of Geometric Reasoning in Adults with High-Functioning Autism
Takashi Yamada, Haruhisa Ohta, Hiromi Watanabe, Chieko Kanai, Masayuki Tani, Taisei Ohno, Yuko Takayama, Akira Iwanami, Nobumasa Kato, Ryuichiro Hashimoto
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0043220
Abstract: Individuals with autism spectrum condition (ASC) are known to excel in some perceptual cognitive tasks, but such developed functions have been often regarded as “islets of abilities” that do not significantly contribute to broader intellectual capacities. However, recent behavioral studies have reported that individuals with ASC have advantages for performing Raven's (Standard) Progressive Matrices (RPM/RSPM), a standard neuropsychological test for general fluid intelligence, raising the possibility that ASC′s cognitive strength can be utilized for more general purposes like novel problem solving. Here, the brain activity of 25 adults with high-functioning ASC and 26 matched normal controls (NC) was measured using functional magnetic resonance imaging (fMRI) to examine neural substrates of geometric reasoning during the engagement of a modified version of the RSPM test. Among the frontal and parietal brain regions involved in fluid intelligence, ASC showed larger activation in the left lateral occipitotemporal cortex (LOTC) during an analytic condition with moderate difficulty than NC. Activation in the left LOTC and ventrolateral prefrontal cortex (VLPFC) increased with task difficulty in NC, whereas such modulation of activity was absent in ASC. Furthermore, functional connectivity analysis revealed a significant reduction of activation coupling between the left inferior parietal cortex and the right anterior prefrontal cortex during both figural and analytic conditions in ASC. These results indicate altered pattern of functional specialization and integration in the neural system for geometric reasoning in ASC, which may explain its atypical cognitive pattern, including performance on the Raven's Matrices test.
Selective Translation of the Measles Virus Nucleocapsid mRNA by La Protein
Chieko Kai
Frontiers in Microbiology , 2011, DOI: 10.3389/fmicb.2011.00173
Abstract: Measles, caused by measles virus (MeV) infection, is the leading cause of death in children because of secondary infections attributable to MeV-induced immune suppression. Recently, we have shown that wild-type MeVs induce the suppression of protein synthesis in host cells (referred to as “shutoff”) and that viral mRNAs are preferentially translated under shutoff conditions in infected cells. To determine the mechanism behind the preferential translation of viral mRNA, we focused on the 5′ untranslated region (UTR) of nucleocapsid (N) mRNA. The La/SSB autoantigen (La) was found to specifically bind to an N-5′UTR probe. Recombinant La enhanced the translation of luciferase mRNA containing the N-5′UTR (N-fLuc), and RNA interference of La suppressed N-fLuc translation. Furthermore, recombinant MeV lacking the La-binding motif in the N-5′UTR displayed delayed viral protein synthesis and growth kinetics at an early phase of infection. These results suggest that La induced predominant translation of N mRNA via binding to its 5′UTR under shutoff conditions. This is the first report on a cellular factor that specifically regulates paramyxovirus mRNA translation.
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