Search results for "ERROR"
showing 10 items of 1643 documents
Terrorism, homeland safety and event management
2014
As the last attacks on Boston showed terrorism is based not only on speculation but also on surprise. Terrorists do not want to destroy or to kill everybody, their goal is aimed to inflict and administrate fear to the witnesses. The fact is that tourism and mega-events represented a fertile source to perpetrate terrorist attacks, not only for the casualties but also by the psychological effects on citizenry. This paper explores the nature of terrorism in the context of leisure as well as proposing a valid model to understand the connection among tourism, event management and terrorism.
The Inefficiency of Knowledge and the Limits of Explanations; the Necessity of Critique
2013
July 22nd 2011 Norway experienced the deadliest terror attack in the country since World War II. One man, Anders Behring Breivik, ABB (33), blew up the Governmental Headquarters in our capital Oslo, killing eight people. Later that day he shot and killed, one by one, 69 youths attending a summer camp at Utøya, and wounded many others. His target was the Norwegian Labour Party, its most prominent and influential members, and those who one day might be. His country is dying he says, because of multiculturalism. He is a commander and knight—future leader and even king. His actions were political, compulsory—necessary. . . he says. He regrets nothing.
Spurious source generation in mapping from noisy phase-self-calibrated data
2008
Phase self-calibration (or selfcal) is an algorithm often used in the calibration of interferometric observations in astronomy. Although a powerful tool, this algorithm presents strong limitations when applied to data with a low signal-to-noise ratio. We analyze the artifacts that the phase selfcal algorithm produces when applied to extremely noisy data. We show how the phase selfcal may generate a spurious source in the sky from a distribution of completely random visibilities. This spurious source is indistinguishable from a real one. We numerically and analytically compute the relationship between the maximum spurious flux density generated by selfcal from noise and the particulars of th…
(No) son sólo imágenes: iconoclasia y yihad 2.0 / They Are (not) just Images: Iconoclasm and Jihad 2.0
2017
The terrorist group Daesh has broadcast worldwide shocking videos of heritage destruction and human beheadings. This paper analyses both practices as iconoclastic gestures within the context of the so-called “war of images” that defines our present days. The paper focuses on iconoclastic theories, the use of social media by terrorists and the role of images in the virtual war waged by Daesh.
L’antimafia come risorsa politica
2019
In questo saggio si discute un momento particolare della storia dell’antimafia. Si tratta degli anni 1985-1994, che hanno come figura principale Leoluca Orlando, sindaco di Palermo. In quel periodo storico, per la prima volta, il discorso politico dell’antimafia viene fatto proprio da questo giovane leader della Democrazia cristiana. Il partito era stato al governo di Palermo e dell’Italia dal secondo dopoguerra senza porsi il problema della lotta alla mafia. Sin all’inizio del 1980, erano state le forze di opposizioni, in particolare il Partito comunista e i sindacati, a portare avanti la lotta antimafia. Con l’omicidio di Piersanti Mattarella, presidente della Regione siciliana, e poi di …
Reproducibility of Skin Temperature Response after Cold Stress Test Using the Game Ready System: Preliminary Study
2021
The objective of this preliminary study was to determine the reproducibility of lower limbs skin temperature after cold stress test using the Game Ready system. Skin temperature of fourteen participants was measured before and after cold stress test using the Game Ready system and it was repeated the protocol in four times: at 9:00, at 11:00, at 19:00, and at 9:00 h of the posterior day. To assess skin temperature recovery after cold stress test, a logarithmic equation for each region was calculated, and constant (β0) and slope (β1) coefficients were obtained. Intraclass correlation coefficient (ICC), standard error (SE), and within-subject coefficient of variation (CV) were determined. No …
Suppression of phase ambiguity in digital holography by using partial coherence or specimen rotation
2008
In this paper we present two approaches for extracting the surface profile as well as obtaining 3D imaging of near field objects by usage of partial coherence and digital holography. In the first approach a light source with given temporal partial coherence is used to illuminate a near field object. The reflected light is interfered with the reference source. By computing the local contrast of the generated fringes one may estimate the 3D topography and the profile of the object. This approach extracts the 3D information from a single image, and its accuracy does not depend on triangulation angle like in fringe projection methods. The second approach is tomography based. There we illuminate…
Estimating Heart Rate, Energy Expenditure, and Physical Performance With a Wrist Photoplethysmographic Device During Running
2017
BackgroundWearable sensors enable long-term monitoring of health and wellbeing indicators. An objective evaluation of sensors’ accuracy is important, especially for their use in health care. ObjectiveThe aim of this study was to use a wrist-worn optical heart rate (OHR) device to estimate heart rate (HR), energy expenditure (EE), and maximal oxygen intake capacity (VO2Max) during running and to evaluate the accuracy of the estimated parameters (HR, EE, and VO2Max) against golden reference methods. MethodsA total of 24 healthy volunteers, of whom 11 were female, with a mean age of 36.2 years (SD 8.2 years) participated in a submaximal self-paced outdoor running test and maximal voluntary exe…
Effectiveness of tDCS at Improving Recognition and Reducing False Memories in Older Adults
2021
Background: False memories tend to increase in healthy and pathological aging, and their reduction could be useful in improving cognitive functioning. The objective of this study was to use an active–placebo method to verify whether the application of transcranial direct current stimulation (tDCS) improved true recognition and reduced false memories in healthy older people. Method: Participants were 29 healthy older adults (65–78 years old) that were assigned to either an active or a placebo group