نتایج جستجو برای: early warning signal

تعداد نتایج: 1093961  

2015
Xin Yin Xu Chen Ertao Lei Jinrui Tang Hong Wang Minghao Wen

This paper proposes an online early warning technique and the probability distribution function (PDF) based icing image recognition for overhead power transmission lines. The main functionality of the online early warning system for overhead transmission lines firstly suggested in this paper is the early warning of icing, forest fire, lighting, insulator flashover, conductor galloping and invas...

2011
Fengshan Wang Yan Cao Meng Liu

Risk early-warning of natural disasters is a very intricate non-deterministic prediction, and it was difficult to resolve the conflicts and incompatibility of the risk structure. Risk early-warning factors of natural disasters were differentiated into essential attributes and external characters, and its workflow mode was established on risk early-warning structure with integrated Entropy and D...

2006
Jillian H Fecteau Douglas P Munoz

5 Figures 28 Pages (including references and figure captions) Summary When observers initiate responses to visual targets, they do so sooner when a preceding stimulus indicates that the target will appear shortly. This consequence of a warning signal may change neural activity in one of four ways. On the sensory side, the warning signal may speed up the rate at which the target is registered by...

2012
Matthias Lendholt Martin Hammitzsch

The delivery of user-tailored warning messages for heterogeneous user groups is a challenge rarely covered by hazard monitoring and Early Warning Systems (EWS) even though it is one of the four key elements of early warning systems identified by the United Nations International Strategy for Disaster Reduction (UN/ISDR). This article describes the concepts of generic information logistics develo...

Journal: :Physical review research 2022

Complex dynamical systems have tipping points and exhibit nonlinear dynamics. It is difficult to predict prevent the onset progression of tumors, mainly due complexity interactions between tumor growth tumor-immune cells involved. Moreover, previous models were based on influence zero-dimensional did not consider spatiotemporal fluctuation in microenvironment. We here extend model a two-dimensi...

2013
Maarten C. Boerlijst Thomas Oudman André M. de Roos

Catastrophic and sudden collapses of ecosystems are sometimes preceded by early warning signals that potentially could be used to predict and prevent a forthcoming catastrophe. Universality of these early warning signals has been proposed, but no formal proof has been provided. Here, we show that in relatively simple ecological models the most commonly used early warning signals for a catastrop...

2012
S. Auclair A. Lemoine B. Colas J. A. Jara

In the frame of the SISPyr project the feasibility of an Earthquake Early Warning system (EEW) covering Pyrenees is being studied. First of all, the analysis of the existing seismic stations shows that the SISPyr realtime network may be used as a base of a Pyrenean EEW despite that some difficulties exist to its implementation that should be solved. The exploration of an important Pyrenean wave...

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