Author: ofo3_testiir

▶Category： Article ▶Author：Miyauchi, Yuhei：Kentaro Nakajima：Stephen J Redding ▶Institution：Quarterly Journal of Economics ▶Volume：Vol.140 ▶Number：Issue 4 ▶Page：pp.2507-2570 ▶Date：2025/11/01 ▶Article Title：The Economics of Spatial Mobility: Theory and Evidence Using Smartphone Data ▶Abstract：We develop a tractable quantitative framework for modeling the rich patterns of spatial mobility observed in smartphone data. We show that travel is frequently undertaken as part of a travel itinerary, defined as a journey starting and ending at home that can include more than one intermediate stop on a given day. We show that these travel itineraries provide microfoundations for consumption externalities and generate both complementarity and substitutability between locations. We show that the consumption externalities implied by travel itineraries are…

▶Category： Article ▶Author：Inoue, Hiroyasu：Kentaro Nakajima：Tetsuji Okazaki：Yukiko U. Saito ▶Institution：The Japanese Economic Review ▶Volume：Vol.76 ▶Number：No.3 ▶Page：pp. 795-820 ▶Date：2025/06/19 ▶Article Title：The role of human interaction in innovation: evidence from the 1918 influenza pandemic in Japan ▶Abstract：This study empirically investigates human interaction’s role in innovation by exploiting the 1918 influenza pandemic in Japan from 1918 to 1921, which prohibitively increased the cost of interactions between inventors. Using unique patent bibliographic data for this period, we estimate the pandemic’s impact on innovation in technologies requiring intensive human interaction for invention. Specifically, we define patent technology classes with large fractions of collaborative patents before the pandemic as collaboration-intensive technology, which requires intensive human interaction for…

▶Category： Article ▶Author：Ichikawa, Tagui ▶Institution：Center for Strategic & International Studies (CSIS) ▶Volume： ▶Number： ▶Page：pp. 1-13 ▶Date：2025/06/17 ▶Article Title：Norms in New Technological Domains:Japan’s AI Governance Strategy ▶Abstract：Artificial intelligence (AI) governance systems vary based on countries’ cultural and social attributes. Influenced by its culture and social background, Japan’s AI governance policy focuses on promoting innovation, taking an agile, “soft-law approach” to governance, and emphasizing international interoperability of AI systems. The Japanese government recently strengthened its legal efforts regarding AI by introducing legislation in the Diet (parliament) at a time of dramatically shifting debate on global AI governance policies in 2025. With the start of the second Trump administration in the United States…

▶Category： Article ▶Author：You, Kyoungmin：Hirofumi Tatsumoto ▶Institution：Organizational Science ▶Volume：Vol.57 ▶Number：Issue2 ▶Page：pp. 93-112 ▶Date：2023/09/01 ▶Article Title：Enabling Innovation Activities in Standardization: A Dynamic Interplay of Moderating Factors and Firm Innovation Activities in Standard-Setting Organizations ▶Abstract：Corporations initiate Standard-Setting Organizations (SSOs) and formulate technology standards across diverse sectors. Existing research has yielded contradictory conclusions between SSOs and firm innovation, engendering a complexity for both practitioners and academic researchers in thoroughly understanding this domain. This study investigates the influence of SSOs on solid innovation and moderating factors, such as network size, membership policy, and firm size. The dataset was collected from 339 firms of the HDMI Forum, coupled with 679,736 patents filed between 1998 and 2020….

▶Category： Article ▶Author：Takada, Naoki：Yaichi Aoshima：Kazunari Matsushima：Akira Izumi ▶Institution：International Journal of Technology Management ▶Volume：Vol.99 ▶Number：No.1-2 ▶Page：pp. 127-146 ▶Date：2026/02/25 ▶Article Title：Assessing international knowledge spillovers from government funded R&D: evidence from Japanese national projects ▶Abstract：This study investigates international knowledge spillovers arising from government-funded R&D projects (GFPs). While GFPs are often justified by their domestic benefits, their international effects remain less clear. We posit that GFPs amplify international spillovers by signalling technological promise: government selection legitimises priority fields and attracts foreign attention. Using patent data from Japanese GFPs and a matched sample of private R&D, we find that GFPs’ patents receive significantly more international forward citations, especially when projects are highlighted in national budget…