Results 151 to 160 of about 187,295 (313)

High-tech clusters, technology spillovers, and trade secret laws. [PDF]

open access: yes
We analyze firms’ incentives to cluster in an industrial district to benefit from reciprocal technology spillovers. A simple model of cumulative innovation is presented, where technology spillovers arise endogenously through labor mobility.
Rønde, Thomas, Fosfuri, Andrea
core  

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

open access: yesDeep Underground Science and Engineering, EarlyView.
Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao   +5 more
wiley   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen   +5 more
wiley   +1 more source

L’archiviste, l’histoire et le secret : le cas exemplaire du secret Défense

open access: yesCahiers d’histoire, 2020
Nathalie Lopes, Jean-Philippe Legois
doaj   +1 more source

The Sorts and the Most Secret Method concert flier - Galaxy Hut, Arlington, VA, July 29, 1997

open access: yes, 1997
Flier advertising a concert by Washington, D.C. bands the Sorts and the Most Secret Method, both of whom were rooted in the D.C. punk subculture. The concert occurred at Galaxy Hut in Arlington, Virginia on July 29, 1997.
Nelson, Ryan C.
core  

Caving‐enhanced geothermal system overwhelms fracturing‐ and pipe‐enhanced geothermal system in heat extraction

open access: yesDeep Underground Science and Engineering, EarlyView.
Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang   +4 more
wiley   +1 more source

Experimentally Validated Quantum-Secure Federated Learning over a Multi-user Quantum Network. [PDF]

open access: yesResearch (Wash D C)
Liu ZP   +8 more
europepmc   +1 more source

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