In this paper, we are studied the problem of data associating in track-before detect (TBD) multiple radar system. The influence of trajectory parameters accuracy (errors) on the quality of work of TBD multiradar system is estimated. We suppose the Hough space discretization to be two times larger than max measure error of target co-ordinate.

S INCE ABOUT 1980 THERE HAS BEEN UNPRECEDENTED global economic integration. Globalization has happened before, but not like this. Economic integration occurs through trade, migration, and capital flows. Figure 1.1 tracks these flows. World trade is measured relative to world income. Capital flows are proxied by the stock of foreign capital in developing countries relative to their GDP. Migratio...

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...

BACKGROUND currently, assessment of outcomes after joint replacement is predominantly centred on impairment and activity limitation (e.g. walking), with little consideration of participation restriction. METHOD structured telephone interviews about participation in leisure activities were conducted with 56 total hip replacement (THR) and 60 total knee replacement (TKR) patients before and 1 y...

BACKGROUND Participation in sport and physical activity is reported to decline during adolescence, particularly for females. However we do not have a clear understanding of changes in the context (i.e., modes and settings) of participation throughout adolescence. This study investigated longitudinal changes in physical activity participation and the specific modes and settings of physical activ...

RATIONALE Nonadherence to prescribed medications is a significant barrier to the successful treatment of psychiatric disorders in clinical practice. It has been argued that patient participation in shared decision making improves adherence to treatment plans. PURPOSE To assess to what extent treatment adherence of psychiatric patients is influenced by the concordance between their preferred p...