MultiNet: Multi-Modal Multi-Task Learning for Autonomous Driving

Autonomous driving requires operation in different behavioral modes ranging from lane following and intersection crossing to turning and stopping. However, most existing deep learning approaches to autonomous driving do not consider the behavioral mode in the training strategy. This paper describes a technique for learning multiple distinct behavioral modes in a single deep neural network through the use of multi-modal multi-task learning. We study the effectiveness of this approach, denoted MultiNet, using self-driving model cars for driving in unstructured environments such as sidewalks and unpaved roads. Using labeled data from over one hundred hours of driving our fleet of 1/10th scale model cars, we trained different neural networks to predict the steering angle and driving speed of the vehicle in different behavioral modes. We show that in each case, MultiNet networks outperform networks trained on individual modes while using a fraction of the total number of parameters.Comment: Published in IEEE WACV 201

Digital Food Marketing to Children and Adolescents: Problematic Practices and Policy Interventions

Examines trends in digital marketing to youth that uses "immersive" techniques, social media, behavioral profiling, location targeting and mobile marketing, and neuroscience methods. Recommends principles for regulating inappropriate advertising to youth

The Social Relationships of Captive African Elephant (Loxodonta africana) Juveniles

In situ female African bush elephants (Loxodonta africana) live in a fission- fusion society comprised of “core groups” in which adult females associate with their dependent offspring (Archie, Moss, & Alberts, 2006). Most of the animals in a core group are related (Archie et al., 2006), but kinship is not the only contributor to elephant sociality.Pre-reproductive females (allomothers) often assist in the care of calves and juveniles (Lee, 1987). The concept of inclusive fitness (Riedman, 1982) is the favored hypothesis for the evolution of allomothering. Zoological settings, with varied social groupings, provide the perfect opportunity to test this hypothesis (Schulte, 2000). During the winter of 2017-2018, four female elephants at the Indianapolis Zoo were grouped together temporarily (one hour per day) and given access to an outside yard. The group included an adolescent (Zahara), her juvenile sister (Nyah), another female juvenile (Kalina) and the (unrelated) dominant elephant at the facility (Sophi). Video recordings of the animals moving freely in the yard were examined to document proximity, changes in proximity, and behavioral observations. Zahara spent more time close to the calves than did Sophi. Zahara and each of the juveniles made and broke contact equally often; however, the juveniles were primarily responsible for maintaining proximity to Sophi. Zahara, surprisingly, associated more with Kalina than with Nyah. Finally, Zahara displayed far more agonistic behaviors towards Kalina than towards Nyah. These results suggest that Zahara was an allomother to both juveniles, favoring Nyah over Zahara, but also interacted with Kalina as a peer

Prankvertising – Pranks as a New Form of Brand Advertising Online

A practical joke (i.e. a prank) belongs to a category of disparagement humor, as it is a playful act held to amuse, tease or even mock the victim, and to entertain the audience. Alt-hough humor has been long exploited in broadcast and print advertising, the use of practical jokes is a more recent phenomenon esp. in digital marketing. The development of the Inter-net and social media creates new opportunities for using pranks as disguised adverts embed-ded in online strategies and there is an increasing number of companies which exploit pranks as a creative content solution for their on-line presence. As there is little academic endeavor devoted to this subject, this paper forwards a theoretical and practical framework for pranks. It recognizes pranks as innovative forms of digital advertising and it analyses their potential in terms of branding effectiveness (e.g. in maximizing brand reach, exposure, brand visibility, drawing consumer attention, eliciting strong emotions etc.). Possible prank effects are inferred from the theory of humor and from the secondary data collected by the authors of this paper. Key challenges, risks and limitations are discussed and relevant exam-ples are provided. The paper concludes with several research areas and questions to be ad-dressed in future empirical studies

Evidence for DNA-mediated nuclear compartmentalization distinct from phase separation.

RNA Polymerase II (Pol II) and transcription factors form concentrated hubs in cells via multivalent protein-protein interactions, often mediated by proteins with intrinsically disordered regions. During Herpes Simplex Virus infection, viral replication compartments (RCs) efficiently enrich host Pol II into membraneless domains, reminiscent of liquid-liquid phase separation. Despite sharing several properties with phase-separated condensates, we show that RCs operate via a distinct mechanism wherein unrestricted nonspecific protein-DNA interactions efficiently outcompete host chromatin, profoundly influencing the way DNA-binding proteins explore RCs. We find that the viral genome remains largely nucleosome-free, and this increase in accessibility allows Pol II and other DNA-binding proteins to repeatedly visit nearby DNA binding sites. This anisotropic behavior creates local accumulations of protein factors despite their unrestricted diffusion across RC boundaries. Our results reveal underappreciated consequences of nonspecific DNA binding in shaping gene activity, and suggest additional roles for chromatin in modulating nuclear function and organization