Geomechanics and TunnellingVolume 16, Issue 3 Cover PictureFree Access Picture: Tunnelling 3/2023 First published: 13 June 2023 https://doi.org/10.1002/geot.202370301AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text full-text accessPlease review our Terms Conditions of Use check box below share version article.I have read accept ...

We propose a new method to estimate and isolate the localization of knowledge spillovers due physical presence person, using after-application but pre-grant deaths differently located coinventors same patent. The approach estimates differences in local citations between deceased still-living inventors at increasingly distant radii. Patents receive 26 percent fewer from within radius 20 miles ar...

The use of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) has been widely restricted. They have been replaced with hydrofluorocarbons (HFCs) in order to protect the ozone layer. However, the leakage of refrigerant into air from active or end-of-life air conditioners has been a serious environmental issue owing to the high global warming potential (GWP) of HFCs. It has therefore...

A systematic computational study on the crystal structure of n-diamond has been performed using first-principle methods. A novel carbon allotrope with hexagonal symmetry R32 space group has been predicted. We name it as HR-carbon. HR-carbon composed of lonsdaleite layers and unique C3 isosceles triangle rings, is stable over graphite phase above 14.2 GPa. The simulated x-ray diffraction pattern...

The interrelationship between house prices and mortgage credit has been one of the more compelling issues to warrant attention after the recent financial crisis. Considerable financial innovation and liberalisation of wholesale international funding markets over the past 20 years greatly increased the ability of banking sectors to extend credit to the real economy. Almost inevitably many countr...

In present study, the two phase flow boiling heat transfer coefficient and pressure drop of R410A, R32 and R290 in microchannels are demonstrated. The experimental data were conducted in horizontal stainless steel tubes with the inner diameter of 0.3 mm and 1.5 mm. The testing conditions were performed with the mass fluxes range from 200 to 500 kg/m2s, the heat fluxes from 10 to 20 kW/m2, the s...

In this paper, we discuss the formation of collaboration networks among …rms that are located in a circular city. The model is a two-stage game. In the …rst stage, …rms form collaboration links, and in the second stage the …rms engage in price competition. The model in the second stage is a generalization of Salop’s (1979) model. We examine pairwise stability of networks and a stochastic networ...

We investigate the effects of restricting locations of firms into Hotelling duopoly models. In the standard location-price models, the equilibrium distance between firms is too large from the viewpoint of consumer welfare. Thus, restricting locations of firms and reducing the distance between firms improve consumer welfare, through lower prices and smaller transportation costs for consumers. We...