ストークス流れ中のカプセルの移動現象

要約のみTohoku University石川拓司課

Enron and the California Energy Crisis: The Role of Networks in Enabling Organizational Corruption

We provide an analytically structured history of Enron's involvement in the California energy crisis, exploring its emergence as a corrupt organization and its use of an interorganizational network to manipulate California's energy supply markets. We use this history to introduce the concept of network-enabled corruption, showing how corruption, even if primarily enacted by a single dominant organization, is often highly dependent on the support of other organizations. Specifically, we show how Enron combined resources from partner firms with its own capabilities, manipulating the energy market and capitalizing on the crisis. From a methodological point of view, our study emphasizes the growing importance of digital sources for historical research, drawing particularly on telephone and email records from the period to develop a rich, fly-on-the-wall understanding of a phenomenon that is otherwise hard to observe

Coupling between dynamic 3D tissue architecture and BMP morphogen signaling during Drosophila wing morphogenesis

At the level of organ formation, tissue morphogenesis drives developmental processes in animals, often involving the rearrangement of two-dimensional (2D) structures into more complex three-dimensional (3D) tissues. These processes can be directed by growth factor signaling pathways. However, little is known about how such morphological changes affect the spatiotemporal distribution of growth factor signaling. Here, using the Drosophila pupal wing, we address how decapentaplegic (Dpp)/bone morphogenetic protein (BMP) signaling and 3D wing morphogenesis are coordinated. Dpp, expressed in the longitudinal veins (LVs) of the pupal wing, initially diffuses laterally within both dorsal and ventral wing epithelia during the inflation stage to regulate cell proliferation. Dpp localization is then refined to the LVs within each epithelial plane, but with active interplanar signaling for vein patterning/differentiation, as the two epithelia appose. Our data further suggest that the 3D architecture of the wing epithelia and the spatial distribution of BMP signaling are tightly coupled, revealing that 3D morphogenesis is an emergent property of the interactions between extracellular signaling and tissue shape changes.Peer reviewe

Creating and Sharing Digital Instructional Activities: A Practical Tutorial

BCBAs may encounter situations, such as the current COVID-19 pandemic, that preclude them from providing traditional in-person ABA services to clients. When conditions prevent BCBAs and behavior technicians from working directly with clients, digital instructional activities designed by BCBAs and delivered via a computer or tablet may be a viable substitute. Google applications, including Google Slides, Google Forms, and Google Classroom, can be particularly useful for creating and sharing digital instructional activities. In the current paper, we provide task analyses for utilizing basic Google Slides functions, developing independent instructional activities, developing caregiver-supported instructional activities, and sharing activities with clients and caregivers. We also provide practical recommendations for implementing digital instructional activities with clients and caregivers

壁周囲のストークス流れ中の生物学的カプセルの振る舞いについて

Tohoku University今井陽