Results 11 to 20 of about 2,813,854 (249)

Research and application of pressure relief and permeability improvement in high gas outburst mines by directional drilling and hydraulic jet

open access: yesFrontiers in Earth Science, 2023
Efficient gas extraction technology is an important topic for low permeability and high gas outburst coal seam. Based on the engineering background of Hudi Coal Mine with the soft and hard coal seams and the existing hydraulic permeability enhancement ...
Dingqi Li   +3 more
doaj   +1 more source

Anti-Uplift Portal Frame in Control of Underlying Tunnel Deformation Induced by Foundation Pit Excavation

open access: yesShanghai Jiaotong Daxue xuebao, 2022
The excavation of foundation pit above the existing metro tunnel inevitably leads to the uplift of the tunnel. As an anti-uplift measure, the anti-uplift portal frame is still lack of research.
WU Huaina, FENG Donglin, LIU Yuan, LAN Ganzhou, CHEN Renpeng
doaj   +1 more source

Sharing indoor space: stakeholders’ perspectives and energy metrics

open access: yesBuildings & Cities, 2020
The sharing of indoor space can improve space and energy efficiency. The drivers and barriers to space-sharing initiatives are investigated from the perspectives of building users and building sector practitioners, based on interviews and a workshop. The
Nicolas Francart   +5 more
doaj   +1 more source

Risk Assessment for Shield Tunneling Beneath Buildings Based on Interval Improved TOPSIS Method and FAHP Method

open access: yesShanghai Jiaotong Daxue xuebao, 2022
In order to evaluate the impact of shield tunnel construction on adjacent buildings, a method based on the fuzzy analytic hierarchy process (FAHP) and the interval number improvement technique for order preference by similarity to ideal solution (TOPSIS)
CHEN Renpeng, WANG Zhiteng, WU Huaina, LIU Yuan, MENG Fanyan
doaj   +1 more source

Space Efficiency of Tall Buildings in Singapore

open access: yesApplied Sciences
Space efficiency in Singaporean tall buildings results from a complex interplay of historical, architectural, engineering, technological, socioeconomic, and environmental factors.
Özlem Nur Aslantamer   +1 more
doaj   +1 more source

Investigating Space Utilization in Skyscrapers Designed with Prismatic Form

open access: yesBuildings
The enduring appeal of prismatic shapes, historically prevalent in office building designs, persists in contemporary skyscraper architecture, which is attributed particularly to their advantageous aspects concerning cost-efficiency and optimal space ...
Hüseyin Emre Ilgın   +1 more
doaj   +1 more source

Conversion Efficiencies of Heteronuclear Feshbach Molecules [PDF]

open access: yes, 2001
We study the conversion efficiency of heteronuclear Feshbach molecules in population imbalanced atomic gases formed by ramping the magnetic field adiabatically. We extend the recent work [J. E. Williams et al., New J.
Bartlett, Paul   +2 more
core   +1 more source

Nonlinear self-phase matching of optical second harmonic generation in lithium niobate [PDF]

open access: yes, 1996
We show that the nonlinear index perturbation due to light-induced photovoltaic space-charge field in LiNbO3 can give rise to self-phase matching of second harmonic generation.
Orlov, Sergei   +2 more
core   +1 more source

COMFORT AND FUNCTIONALITY IN A CARAVAN DESIGN

open access: yesJournal of Industrial Design and Engineering Graphics, 2018
In this paper I will present the design of a caravan, taking into account the two main characteristics found in the description of such a product, namely functionality and comfort. With the ultimate goal of generating a lower cost, I will focus on making
Nicoleta Voineagu
doaj   +2 more sources

Transformational Leadership and Project Success: The Moderating Effect of Top Management Support

open access: yesSAGE Open, 2023
Great attention has been paid to the projects’ success, which is the core of project management. It is not surprising that much research is being done in this area, as several factors contribute to the project’s success. However, the moderating effect of
Muhammad Zeeshan Fareed   +4 more
doaj   +1 more source

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