The decolonial empathy of two Maya documentaries shown at the XIII CLACPI film festival : FicMayab

In this article, I analyze two short documentaries Kat at Kat’ex? (2017) and Sepur Zarco: la vida después de la sentencia (2018), both directed by the Maya-K’iche-Kaqchikel media maker from Guatemala, Eduardo Say, and shown at the XIII CLACPI Film Festival-FicMayab’. Both movies feature Mayan witnesses to and survivors of the violence of the civil war in Guatemala. They share their stories of loss and pain with the diverse audiences convened by the festival. I argue that these movies, in referring to the past, constitute platforms in which these witnesses enact forms of reproduction of life through embodied social practices and acts of care that, in turn, portray them as agents of the reconstitution of their own present. I contend that these movies extend an invitation to the Western(ized) viewer to relate to the Maya testimonios of pain and realities, both within the films’ frame and outside of it. I use the term “decolonial empathy” to refer to this invitation that considers the Maya peoples’ self-determination in the face of state violence and its legacies.peer-reviewe

Empirical Study of Intraday Option Price Changes using extended Count Regression Models

In this paper we model absolute price changes of an option on the XETRA DAX index based on quote-by-quote data from the EUREX exchange. In contrast to other authors, we focus on a parameter-driven model for this purpose and use a Poisson Generalized Linear Model (GLM) with a latent AR(1) process in the mean, which accounts for autocorrelation and overdispersion in the data. Parameter estimation is carried out by Markov Chain Monte Carlo methods using the WinBUGS software. In a Bayesian context, we prove the superiority of this modelling approach compared to an ordinary Poisson-GLM and to a complex Poisson-GLM with heterogeneous variance structure (but without taking into account any autocorrelations) by using the deviance information criterion (DIC) as proposed by Spiegelhalter et al. (2002). We include a broad range of explanatory variables into our regression modelling for which we also consider interaction effects: While, according to our modelling results, the price development of the underlying, the intrinsic value of the option at the time of the trade, the number of new quotations between two price changes, the time between two price changes and the Bid-Ask spread have significant effects on the size of the price changes, this is not the case for the remaining time to maturity of the option. By giving possible interpretations of our modelling results we also provide an empirical contribution to the understanding of the microstructure of option markets

Extreme value theory for moving average processes with light-tailed innovations

We consider stationary infinite moving average processes of the form $Y_n = \sum c_i Z_{n+i}$, where the sum ranges over the integers, (Z_i) is a sequence of iid random variables with ``light tails'' and (c_i) is a sequence of positive and summable coefficients. By light tails we mean that Z_0 has a bounded density $f(t)$ behaving asymptotically like $v(t) \exp (-g(t) )$, where v(t) behaves roughly like a constant as t goes to infinity, and g(t) is strictly convex satisfying certain asymptotic regularity conditions. We show that the iid sequence associated with Y_0 is in the maximum domain of attraction of the Gumbel distribution. Under additional regular variation conditions on g, it is shown that the stationary sequence (Y_n) has the same extremal behaviour as its associated iid sequence. This generalizes results of Rootz\'en (1986, 1987), where $g(t) = t^p$ and $v(t)=c t^d$ for p > 1, positive c and a real constant d

Coal and fuel burning effects on the atmosphere as mediated by the atmospheric electric field and galactic cosmic rays flux

Abstract: Emissions into the atmosphere of Greenhouse Gases (GHGs) and particulate matter resulting from fossil fuel burning are considered to be the main anthropogenic forcing on the global climate. We show here that the external cyclic influences of cosmic origin that modulate the earth’s climate may either reinforce or mitigate the ‘local’ terrestrial forcings. Among the external influences is cosmic radiation, whose intensity shows a cyclic variation of 11 years, accompanying the 11-year cycle of solar activity. We put forward a mechanism to explain how the emission of particulate matter into the atmosphere might influence global lightning activity. With respect to global lightning activity, we show why, during the 11-year cycle, the influence of an increase in particulate matter concentration in the atmosphere may be negligible in some years, while it will be reinforced in other years, depending on the place of the years in the cycle. We also remark that the effect on global warming of fossil fuel burning is also modulated by the cosmic ray flux, whose influence is mediated by the variation that it promotes on the cloud cover

Advertising Media and the Green Environmental Aspect

Previous research has shown that consumer trust in advertising is low and continues to diminish. Researchers have also found that a big share of advertising investments is placed in less favorable media which can contribute to consumers’ increasing disbelief towards advertising. The results of the present study add to these previous findings by showing that the consumers’ trust levels in advertising vary among the 11 different media studied and that the marketing managers’ beliefs about consumers are not consistent with the consumers’ attitudes toward and usage of advertising media. Ignoring this phenomenon may have consequences for companies investing in less favorable media and thereby adding to consumers’ increasing disbelief towards advertising. The greatest discrepancy was found for ads on TV. The marketing managers seem to believe incorrectly that ads on TV are not only more trusted but also more used by consumers than the consumers claim. The consumers were found to have more negative attitudes toward TV advertising than what the marketing managers believe about consumers. TV is also perceived by the consumers as more harmful for the green environment than the marketing managers believe about consumers. The results show that the consumers have more positive attitudes toward direct marketing than the marketing managers believe about them. The consumers perceive direct marketing as better, less irritating and less harmful for the environment compared to the marketing managers’ beliefs about them. In addition, the consumers claim to make more use of ads in many of the paper-based media than TV advertising when they want to buy different products. This was found to be not consistent with the marketing managers’ beliefs about consumers. The consumers were found to have more negative attitudes toward advertising through the mobile phone than the marketing managers believe about consumers. Advertising through the mobile phone is considered by the consumers as one of the worst, most irritating and least trusted medium among the 11 advertising media studied. Moreover, the consumers consider the mobile phone to be more harmful for the green environment compared to the marketing managers’ beliefs about consumers. The results also show that the marketing managers feel more personal responsible towards caring for the green environment than the consumers. In addition, both the marketing managers and the consumers were found to have equally high demands and expectations of organizations to act responsibly toward the green environment. This contradicts previous findings that showed that the green environmental aspect is among the factors that are the least considered when marketing managers work with marketing communication in general and advertising media selection in particular. Furthermore, this study found that green environmental responsibility attitude (GERA) is weakly related to the perception on the green environmental aspect of advertising media. Thus, the discrepancies found in this study between the consumers and marketing managers regarding their green environmental perceptions on the 11 different advertising media should be explained by other factors.Advertising Media; Attitudes; Consumers; Marketing Managers; Green Environment; Green Environmental Responsibility Attitude (GERA);

The Effects of Students’ Middle-School and High-School Experiences on Completion of the Bachelor’s Degree: How Can School Counselors Make a Difference?

Trusty and Hutchinson present a brief overview and analysis of the Research Monograph, Effects of Students’ Middle-School and High-School Experiences on Completion of the Bachelor’s Degree. They offer a discussion of the association between certain middle and high school student variables on the completion or non-completion of the bachelor\u27s degree. In addition, they provide best practices and suggestions for school counselors to apply the findings to their own contexts

GeV-scale dark matter: production at the Main Injector

Assuming that dark matter particles interact with quarks via a GeV-scale mediator, we study dark matter production in fixed target collisions. The ensuing signal in a neutrino near detector consists of neutral-current events with an energy distribution peaked at higher values than the neutrino background. We find that for a $Z'$ boson of mass around a few GeV that decays to dark matter particles, the dark matter beam produced by the Main Injector at Fermilab allows the exploration of a range of values for the gauge coupling that currently satisfy all experimental constraints. The NO$\nu$A detector is well positioned for probing the presence of a dark matter beam, while future LBNF near-detectors would provide more sensitive probes.Comment: 25 pages, 9 figure