- Systems Engineering Methodologies and Applications
- Interactive and Immersive Displays
- Indoor and Outdoor Localization Technologies
- Disaster Management and Resilience
- Sports Performance and Training
- Complex Systems and Decision Making
- Context-Aware Activity Recognition Systems
- Sports injuries and prevention
- Evacuation and Crowd Dynamics
- GNSS positioning and interference
- Modular Robots and Swarm Intelligence
- Augmented Reality Applications
- Software Reliability and Analysis Research
- Infrastructure Maintenance and Monitoring
- Technology Assessment and Management
- Geographic Information Systems Studies
- COVID-19 impact on air quality
- Space exploration and regulation
- Space Satellite Systems and Control
- Human Mobility and Location-Based Analysis
- Exercise and Physiological Responses
- Imbalanced Data Classification Techniques
- Infrastructure Resilience and Vulnerability Analysis
- Asphalt Pavement Performance Evaluation
- Software Engineering Techniques and Practices
Keio University
2016-2025
Japan External Trade Organization
2014
Software Research Associates (Japan)
2013
Japan Aerospace Exploration Agency
2008-2009
Keio University Shonan Fujisawa
2005
From August to October 2024, severe flooding in Northern Thailand, triggered by heavy rains and Typhoon Yagi, caused deaths, injuries, extensive damage. This preliminary report outlines the disaster timeline, impact, response actions, including operations center establishment. The inundation areas are presented using satellite data news, with visuals like imagery some photographs highlighting flood’s severity. Despite relief efforts, challenges management emerged. study informs future...
Alternative data is increasingly utilized for credit evaluation of financially excluded persons. However, requirements, such as reliability, which gain new importance when alternative employed evaluation, have not been considered part the scoring process. This research proposes an approach incorporating context-specific stakeholder requirements in Two hybrid heuristics are proposed a feature selection process that simultaneously optimizes all requirements. The first multiple objective,...
Introduction The fencing lunge (lunge), characterized by minimal body rotation, offers a movement well-suited for 2D video analysis. However, to the best of our knowledge, validity analysis has not been verified. This study aimed validate comparing lower limb joints (hip, knee, and ankle joints) angles during using both 3D motion methods. Methods Twenty-two male fencers performed trials that were simultaneously recorded eight capture cameras (Qualisys Miqus M1) two digital (Sony AX-450...
Abstract A noninvasive, immediate, and convenient method for assessing muscle tissue status during exercise-induced damage (EIMD) has not been established. This study was designed to assess determine parameters suitable measuring EIMD after eccentric exercise, using multi-frequency bioimpedance analysis (BIA). Thirty-five young male participants performed dumbbell exercises with their left arm, BIA were measured at various time points up 168 h post exercise a device. At all-time points,...
The purpose of this study was to examine the feasibility an intervention program focused on career transition psychological support for retired Olympic athletes in Japan. It expected that would significantly enhance knowledge about and also attitudes towards seeking support. 24 Japanese female who had competed Olympics between 1996 2016 participated study. content delivered a three-part workshop, focusing transitions sport, post-retirement adjustment difficulties, coping strategies....
SUMMARY In January 2011, a new standard ISO/IEC 29110 was published. To evaluate effectiveness of the assessment using 29110, we have performed series lightweight assessment. The method taken in this trial task checklist based on 29110‐5 with customized procedures 15504‐2. Through trial, found that required little effort to project. Moreover, an acceptable way for project extract issues and risks urge awareness. Regarding one aforementioned, has two benefits. Firstly, it is useful readiness...
The installation process of numerous Bluetooth Low Energy (BLE) beacons in the indoor positioning environment usually requires manual measurement beacon's physical coordinates which tends to be a labor-intensive process. In this work, we aim create BLE beacon map by obtaining their from situ Received Signal Strength (RSS) observations on smartphone short period time. This paper proposes method automatic localization for twin based Range-Only Simultaneous Localization and Mapping (RO-SLAM)...
A health information system is a of systems that serves as foundation used for the evidence-based decision making public actions. Since practical solutions addressing transformation and its effect on management have not been extensively discussed, this study examines an approach to model analyze transforming systems. The process architecture in case Cambodian malaria surveillance were modeled using engineering multiple-domain matrix modeling framework. By attributes process, architecture,...
This study aimed to investigate the relationship between muscle shear modulus of biceps brachii, urinary titin N-terminal fragment (UTF), and other damage markers after eccentric exercise. Seventeen healthy males performed five sets ten exercises with dumbbells weighing 50% maximum voluntary contraction (MVC) at elbow joint. Muscle range interest set only brachii measured by ultrasound wave elastography, UTF, MVC, motion (ROM), soreness (SOR) were recorded before, immediately after, 1, 24,...
This study aimed to evaluate the effects of different target distances on various leg joints in fencing lunge (lunge). Fifteen fencers performed lunges from three (normal, short, and long). Joint angle data sagittal plane hip, knee, ankle front rear legs were measured using a 3D motion analysis system (Miqus M3). variables compared between each distance one-way repeated-measures variance Friedman tests (p < 0.05). The results showed significant differences extensions, ranges motion,...
Location-Based Services (LBS), an emerging new business based on smartphone and mobile networks, are becoming more popular. Most of these LBSs, however, only offer non-seamless indoor/outdoor applications simple without giving stakeholders the chance to play active role. Our specific aim is solve issues. This paper presents concepts issues by expanding Open Location Interface Standard (OpenLS) allow seamless positioning extend content services include information recommended stakeholders.
Road pavements need to be efficiently maintained under budget constraints. A pavement management system supports a road administrator's decision making based on the prediction of deterioration. However, deterioration is complicated and uncertain because there are many unobservable variables, highly accurate difficult. For administrators use such predictions in making, it necessary quantify reliability prediction. This paper proposes interval estimation method by applying bootstrap with...
Due to the associated and substantial efforts of many stakeholders involved in malaria containment, disease burden has dramatically decreased endemic countries recent years. Some decades after past global eradication program, elimination again featured on health agenda. While risk distribution modeling a mapping approach are effective tools assist with efficient allocation limited healthcare resources, these methods need some adjustment reexamination accordance changes occurring relation...
Financial exclusion has a major socio-economic impact on the poor and unbanked. Financially excluded smallholder farmers face challenges accessing credit facilities to fund their farming activities because they lack financial history data required create scores for risk evaluations. Non-financial sources such as mobile applications have been proposed development of scoring models. However, context-specific alternative factors which are independent information, must be developed decision...
This paper describes a method of predicting the rutting depth by introducing Adam and dropout into MLP neural network GRU recurrent net that can handle time series data. We built model to predict current from past 3 years ago. compared RMSE with multiple regression (MLR), which is most frequently used as problem for variation depth. As result, decreased in order MLR, MLP, GRU. The difference between MLR was about 10%.
Ice slurry ingestion enhances exercise performance by lowering the core body temperature. However, an operational issue related to this is requirement for a high intake of 7.5 g·kg -1 produce desired effects. We investigated effects low amounts ice at −2°C on tympanic temperature and during repeated high-intensity intermittent exercises in hot environment. This study was randomized, crossover study, with 6-day washout period. Twelve university rugby union players performed two 30-min...
The disease burden of malaria has decreased as elimination efforts progress. mapping approach that uses spatial risk distribution modeling needs some adjustment and reinvestigation in accordance with situational changes. Here we applied a mathematical for standardized morbidity ratio (SMR) calculated by annual parasite incidence using routinely aggregated surveillance reports, environmental data such remote sensing data, non-environmental anthropogenic to create fine-scale maps western...