Study on explicit solutions to embedding problems

横浜国立大学博士（理学）この学位論文の全文は、中央図書館で平日17時までに申請することで閲覧が可能です。thesi

[Articles]New Technologies and Transport Contract Law

本研究はJSPS 科研費24K00207 の助成を受けたものです。departmental bulletin pape

The Road to Electric Vehicle Supremacy : China's Strategic Ascent and Its Global Implications

Between 2020 and 2023, China surged from being the fifth-largest to the largest exporter of passenger cars, including electric vehicles (EVs). This paper examines the factors behind China’s rapid rise in the global EV market, arguing that while state subsidies provided local producers with cost advantages, they are not the sole drivers of China’s dominance. Strategic investments in critical mineral supply chains, refining, and battery production, alongside intense domestic competition, have also played a significant role. The paper explores the implications of China’s rise for the global automotive industry, particularly for Western economies. While trade tensions and tariffs aimed at countering China's market practices have arisen, these may not significantly hinder China's progress. Instead, the paper highlights the potential opportunities for automakers in Japan and other Western nations, who must adapt to stay competitive and explore new partnerships in the evolving market.departmental bulletin pape

A Literature Review on Value Creation in Product Development

departmental bulletin pape

A Comparative Analysis of End-of-Life Care for Older Adults in East Asia, the U.S. and Europe : With a Particular Focus on Family Involvement, Advance Directives and ACP

This article addresses the urgent challenges of an ageing population and rising dementia rates in East Asia, focusing on Japan, South Korea, Taiwan, and Singapore. It highlights the need for proactive measures due to increased deaths, declining birth rates, increasing single-living elderly, and weakening familial bonds. The question is how law and policy can respond to these challenges to ensure fulfilling end-of-life care for older adults. The article compares social characteristics and law and policy strategies from the U.S., Europe, and East Asia, noting the prevalence of family involvement in East Asia. It calls for a balance between respecting individual autonomy and societal values. Inspired by the European Law Institute, it proposes the project for “Advance Decision-Making for Future Disability in the East Asian Context" for comprehensive research. The article examines the social and legal influences on advance directives (ADs) and advance care planning (ACP). It suggests that each country should be respected in its unique traits. It argues for integrating healthcare and asset management, legal and practical approaches, and individual and relational autonomy. The proposed East Asian model for advance decision-making aims to promote a supportive approach to ADs and ACP, guided by principles of human rights, diversity, and mutual benefit.departmental bulletin pape

TOKIWA Forest of Yokohama National University Road to Registration as an OECM

2022年12月に行われた生物多様性条約第15回締約国会議（COP15）では，2030年までに陸域・海域それぞれで保護地域および保護に資する地域（OECM）を30％にするという目標（30 by 30）が掲げられた。日本でも2023年3月，この目標が閣議決定され，環境省が認定する「自然共生サイト」として運用が開始された。横浜国立大学では，「人と自然の共生」，「ふるさとの木によるふるさとの森づくり」をコンセプトに，1970年代後半から潜在植生を活用した混植・密植方式で環境保全林が造成され，都市部には珍しい緑豊かなキャンパスが成立している。そこでは多様な生態系が見られ，多くの動植物，希少種が生育・生息している。2023年，このキャンパスの一部を自然共生サイトに登録するための調査が行われ，2024年4月に登録申請，9月に自然共生サイトに認定された。今後，都市部に成立した森林の管理とモニタリングを通して，生物多様性保全活動や次世代教育の場として，また生態学的研究に資する場として活用していくことが望まれる。departmental bulletin pape

2024 年度横浜ELSI 研究会活動記録

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Direct Physical Vapor Deposition of Liquid Metal on Treated Metal Surface

Liquid metal has garnered significant interest as a potential stretchable wiring material for next-generation stretchable electronics. The operation of substrates within these electronics necessitates adherence to three primary criteria for the wiring of electronic substrates to facilitate the integration of stretchable circuits in society. First, the wiring’s top surface must remain exposed to allow for the straightforward attachment of electronic components following the wiring fabrication. Second, the design of the wiring pattern should not be subject to significant constraints. Third, the substrate’s top surface needs to be clean and devoid of excess conductive material to mitigate the risk of unintended short-circuits. Previous studies have not introduced a liquid metal patterning method that meets all of these criteria. Physical vapor deposition (PVD) is commonly employed for depositing hard metals on nonstretchable substrates such as silicon and glass. However, when subjected to direct PVD, liquid metal forms independent nanoparticles, losing conductivity due to its exceptionally high surface tension and the presence of surface oxide films. Consequently, the direct deposition of liquid metals without subsequent physical stimulation, such as the application of pressure, has been deemed challenging. In our study, we enhanced the substrate surface’s wettability by treating it with copper chloride, thereby facilitating the direct deposition of liquid metals onto the substrate surface. The oxide film on the liquid metal’s surface is disrupted upon contact with the copper chloride-treated substrate, enabling the nanoparticles to coalesce and establish electrical connectivity, thereby preserving conductivity even when stretched. The resultant stretchable wiring exhibited a fine line width of approximately 50 μm and a thin film thickness of approximately 1 μm, ensuring a robust bond with the substrate surface. Consequently, this wiring technique supports diverse patterning designs when combined with processing methods such as photolithography.journal articl

The analysis of the Impact of Japanese enterprises in Asia-Creation of an international inter-regional input-output table that separates Japanese enterprises-

横浜国立大学博士（経済学）doctoral thesi

Estimation Methods of Seismic Design Margins for Piping Systems in Nuclear Power Plants

横浜国立大学博士（工学）Dissertation title from dissertation abstract: Estimation Methods of Seismic Design Margin for Piping Systems in Nuclear Power Plantsこの学位論文の全文は、中央図書館で平日17時までに申請することで閲覧が可能です。The full text of this thesis is available for viewing at the Central Library upon request by 5:00 p.m. on weekdays.thesi