In the last few years, social networks like Twitter have been a very useful resource for tracking the events that happened before, during and after an earthquake. Several studies of this topic have applied different techniques like Clustering or Temporal models for extracting these events from Twitter. In this paper, however, we propose a new approach for extracting not only the events that hap...

Typical image feature trackers employ a detect-describe-associate (DDA) or detect-track (DT) paradigm. Intuitively, a hybrid of the two approaches inherits the benefits of each approach and possibly their defects, however this has never been demonstrated formally in a more general setting. In this paper, the stability and speed of DDA, DT, and hybrid trackers are compared and discussed using a ...

This study aims at developing a particle method to detect faint debris, which is hardly seen in single image, from an image sequence based on a track-before-detect (TBD) method. TBD methods try to track targets without explicitly detecting the signals followed by evaluation of goodness of each track and obtaining detection results. This study proposes a particle based TBD (P-TBD) method consist...

Several species of Phytophthora cause crown and root rot diseases of herbaceous and woody plants. Crown and root rot of pistachio trees cause significant damages in infected orchards. The effect of foliar application with Elite (fosetyl-Al) in 2 and 2.5 g/l was evaluated in greenhouse experiments. The frequency of mortality, fresh and dry weight of roots and shoots, height, intensity of crown r...

Background: Pesticide application before transplanting crops has been widely used in rice as an economical and effective method for reducing the use of chemical pesticides. This study focused on feasibility pesticides a fresh corn nursery to control Spodoptera frugiperda. Methods: Three pesticides, including 35% Chlorantraniliprole WDG, 6% Spinetoram SC, 3% Emamectin Benzoate combined with Poly...