نتایج جستجو برای: concentrated force
تعداد نتایج: 229291 فیلتر نتایج به سال:
Peridynamics (PD) is a reformulation of the classical continuum mechanics. Its core consists in that weighted integral relative displacement over spatial domain used instead derivative governing equations deformation. Based on an improved technique exerting traction boundary surface, peridynamic motion equation has been proposed within framework peridynamic(PD) theory. It more natural and easie...
A one-dimensional model of classical diffusion in a random force field with a weak concentration ρ of absorbers is studied. The force field is taken as a Gaussian white noise with 〈φ(x)〉 = 0 and 〈φ(x)φ(x)〉 = g δ(x− x′). Our analysis relies on the relation between the FokkerPlanck operator and a quantum Hamiltonian in which absorption leads to breaking of supersymmetry. Using a Lifshits argument...
Abstract Sediment flows generate ground vibrations by exerting force fluctuations on the riverbed. Linking to properties of highly concentrated sediment flows, however, remains particularly challenging due complexities arising from grain‐to‐grain interactions. Here, we conduct downscaled flume experiments in which specifically measure and local seismic together with flow at high spatial tempora...
Lower socioeconomic status (SES) is associated with higher levels of life stress, which in turn affect stress physiology. SES is related to basal cortisol and diurnal change, but it is not clear if SES is associated with cortisol reactivity to stress. To address this question, we examined the relationship between two indices of SES, parental education and concentrated neighborhood disadvantage,...
Scholars have become increasingly interested in how social environments condition the relationships between individual risk-factors and adolescent behavior. An appreciable portion of this literature is concerned with the relationship between impulsivity and delinquency across neighborhood settings. The present article builds upon this growing body of research by considering the more nuanced pat...
Drawing from cumulative inequality theory, we examine the relationship between childhood disadvantage and health problems in adulthood. Using two waves of data from Midlife Development in the United States, we investigate whether childhood disadvantage is associated with adult disadvantage, including fewer social resources, and the effect of lifelong disadvantage on health problems measured at ...
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