[in Japanese]

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Japan's economy is currently undergoing a crucial moment in its future strategic direction. In May 2023, the Society of Integrated Management for Risk and Crisis organized its 7th academic conference, covering a wide range of topics and discussing numerous crisis management issues. The outcomes highlighted the urgent need to address crisis management measures comprehensively, with a special focus on advanced research topics such as logistics crisis countermeasures for 2024. The severity of the labor shortage in logistics is paralleled by a similarly critical situation in the construction industry. The impending 2024 problem, involving regulations on overtime limits, is exacerbating the rise in construction costs. Since August 2022, the Consumer Price Index (CPI) has consistently shown a yearon-year growth rate exceeding 3%. However, the escalating costs in sectors like logistics and construction will have a cascading effect on overall prices. Some companies are navigating these challenges by collaborating with competitors in non-competitive fields, allowing for more efficient allocation of management resources in competitive sectors. Conversely, companies that develop their own products are increasing their competitive advantage and reducing environmental impact by managing all aspects in-house, from raw material procurement to planning, production, distribution, and sales. For these companies, logistics is emerging as a strategically significant area. While businessperson adopt diverse approaches based on their handled products and business models, the political, industrial, academic and individual parties must collectively strive to identify optimal solutions through the application of comprehensive risk and crisis management sciences.

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[in Japanese]

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[in Japanese]

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This study aimed to analyze the background information of suicide cases with a history of psychiatric consultations using postmortem data from the Osaka Prefectural Medical Examiner's Office. The goal was to explore the relationship between psychiatric consultations and the timing of suicide. Methods: A retrospective analysis was conducted on 191 suicide cases recorded in 2017. Background data such as gender, age, occupation, method of suicide, and the time interval between the last psychiatric consultation and suicide were analyzed. Descriptive statistics and correlation analysis were used to examine trends. Results: Females accounted for 55% of the cases, with most individuals being middle-aged (56%) and unemployed (70.7%). Hanging (44%) was the most common suicide method, while Mondays (24.1%) had the highest suicide frequency. The median time between the last psychiatric consultation and suicide was 9 days, and a strong negative correlation (r = -0.79) was observed between this interval and the number of suicides. Conclusion: The findings suggest that suicides often occur shortly after psychiatric consultations, emphasizing the need for timely intervention. Postmortem data can offer critical insights into suicide risks. However, further research is needed to better understand psychiatric consultation details and their link to suicide prevention

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Effective disaster response within the Incident Command System (ICS) depends on rapid and diverse situational information. This study quantitatively compared disaster information obtained by a Human observation group and a Drone observation group using entropy-based metrics and an integrated information quality (IQ) score. A simulated disaster field experiment was conducted in Indonesia. The Human observation group (n=20) recorded events through on-site patrol reports, while the Drone observation group (10 flights) recorded events based on aerial observation. Detected disaster events were categorized and analyzed using Shannon entropy, entropy weight method (EWM), and a time-normalized IQ score. Group differences were tested using Welch’s t-test. The Drone observation group detected more disaster events across all major categories and showed higher entropy values, indicating greater information diversity. The mean IQ score was significantly higher in the Drone observation group (10.6) than in the Human observation group (2.5) (p<0.01, large effect size), indicating substantially greater operational information efficiency under aerial observation.

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