Results 111 to 120 of about 850,462 (296)

Multiple solutions for semilinear elliptic boundary value problems at resonance

Electronic Journal of Differential Equations, 1995
successful in proving the existence of weak solutions for semilinear elliptic boundary value problems at resonance. One technique involves a variational approach where solutions are characterized as saddle points for a related functional.
Steve B. Robinson
doaj  

Effects of Elevation Changes and Multilevel Structures on Vehicular Signal Propagation

Future Transportation
Reliable Vehicle-to-Everything (V2X) evaluation requires propagation models that represent terrain and multilevel infrastructure. Most integrated vehicular simulators still rely on planar models, but the magnitude of the resulting bias is unclear.
Vitaly G. Stepanyants, Andrey V. Fizulin, Artem R. Chibirov, Aleksandr A. Amerikanov, Aleksandr Y. Romanov   +4 more
doaj   +1 more source

Greenwashing in the Spotlight: Synthesising Evidence on Unethical Environmental Claims and Future Pathways

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Firms are experiencing mounting pressure to report their environmental impact. Rather than disclosing their actual performance, however, some are engaging in unethical business (i.e., greenwashing) practices. Prior studies have contributed significantly to the greenwashing literature from varied perspectives, but a comprehensive understanding ...
Sher Jahan Khan, Norah Albishri, Bhumika Gupta, Piera Centobelli, Manlio Del Giudice   +4 more
wiley   +1 more source

Tommy Viele snowboarding at Red Mountain Pass, CO, 1998.

, 1998
Photograph of Tommy Viele snowboarding at Red Mountain Pass, Colorado ...
Nate Christenson
core  

Mountain pass type solutions for quasilinear elliptic inclusions

, 2002
We establish the existence of weak solutions to the inclusion problem[GRAPHICS]where Omega is a bounded domain in R-N, g is an element of C((&UOmega;) over bar x R, R), and psi is an element of R x R is a maximal monotone odd graph.
Clement, P, Garcia Huidobro, M, Manasevich, R   +2 more
core   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

High atmospheric pressure rescues plant growth under humidity stress: A model for climate‐resilient deep underground agriculture

Deep Underground Science and Engineering, EarlyView.
High atmospheric pressure (120 kPa) in deep underground counteracts humidity‐induced physiological stress in plants, stabilizing water balance and enhancing antioxidative defenses. This synergy boosts biomass despite elevated humidity, demonstrating sustainable deep underground agriculture potential under climate uncertainty.
Yuxin He, Linglu Xu, Xiao Tan, Wenhua Zhuang, Naiwen Li, Chao Liu, Bo Tan   +6 more
wiley   +1 more source

Homoclinic orbits for a class of symmetric Hamiltonian systems

Electronic Journal of Differential Equations, 1994
of Hamiltonian systems that are symmetric with respect to independent variable (time). For the scalar case we prove existence and uniqueness of a positive homoclinic solution. For the system case we prove existence of symmetric homoclinic orbits.
Philip Korman, Alan C. Lazer
doaj  

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

A critical elliptic equation with a logarithmic type perturbation

Electronic Journal of Qualitative Theory of Differential Equations
In this note, we consider a critical elliptic equation perturbed by a logarithmic type subcritical term in $\mathbb{R}^4$, and investigate how the logarithmic term affects the existence of weak solutions to such a problem. Since the logarithmic term does
Haixia Li, Yuzhu Han
doaj   +1 more source