نتایج جستجو برای: levee construction
تعداد نتایج: 209878 فیلتر نتایج به سال:
The rapid deterioration of the environmental situation comes mainly from pollution by industrial and municipal wastes in form landfilled wastes. only way out this threatening is urgent utilization all these as valuable raw materials alternative to traditional natural materials. This article describes detail result complete replacement with four wastes—from iron ore processing, cellulose pulp pr...
For a given minimum cost of the electricity dispatch, multiple equivalent dispatch solutions may exist. We explore the sensitivity of networks to these dispatch solutions and their impact on the vulnerability of the network to cascading failure blackouts. It is shown that, depending on the heterogeneity of the network structure, the blackout statistics can be sensitive to the dispatch solution ...
Article history: Received 24 March 2014 Received in revised form 18 August 2014 Accepted 2 September 2014 Available online 29 September 2014 Editor: J. Brodholt
Reliability evaluation based on degradation is very useful in systems with scarce failures. In this paper a new degradation model based on Weibull distribution is proposed. The model is applied to the degradation of Light Emitting Diodes (LEDs) under different accelerated tests. The results of these tests are in agreement with the proposed model and reliability function is evaluated.
System restoration from cascading failures is an integral part of the overall defense against catastrophic breakdown in networked critical infrastructures. From the outbreak of cascading failures to the system complete breakdown, actions can be taken to prevent failure propagation through the entire network. While most analysis efforts have been carried out before or after cascading failures, r...
Different from the direct contact in epidemics spread, overload failures propagate through hidden functional dependencies. Many studies focused on the critical conditions and catastrophic consequences of cascading failures. However, to understand the network vulnerability and mitigate the cascading overload failures, the knowledge of how the failures propagate in time and space is essential but...
We measured the effects of sound and visual dynamic elements on user experience of a serious game, with special interest in engagement and arousal. Engagement was measured through questionnaires and arousal through the SAM and electromyography (EMG). We adopted the EMG of the corrugator (frown muscle) and the zygomatic muscle (smile muscle) as indicators for arousal and valence. We hypothesized...
The design code Eurocode 7 relies on semi-probabilistic calculation procedures, through utilization of the soil parameters obtained by in situ and laboratory tests, or means transformation models. To reach a prescribed safety margin, inherent parameter variability is accounted for application partial factors to either directly resistance. However, considering several sources geotechnical uncert...
Abstract. A natural levee is a typical wedge-shaped deposit adjacent to river channel. Given its location and distinctive features, the can serve as key revealing depositional processes of coupled channel floodplain system preserved in rock record. Levee–floodplain topographic evolution also closely linked avulsion which cause catastrophic floods. Nonetheless, geometry aggradation pattern on ha...
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