Cognitive dimensions of predator responses to imperfect mimicry?

Many palatable insects, for example hoverflies, deter predators by mimicking well-defended insects such as wasps. However, for human observers, these flies often seem to be little better than caricatures of wasps – their visual appearance and behaviour are easily distinguishable. This imperfect mimicry baffles evolutionary biologists, because one might expect natural selection to do a more thorough job. Here we discuss two types of cognitive processes that might explain why mimics distinguishable mimics might enjoy increased protection from predation. Speed accuracy tradeoffs in predator decision making might give imperfect mimics sufficient time to escape, and predators under time constraint might avoid time-consuming discriminations between well-defended models and inaccurate edible mimics, and instead adopt a “safety first” policy of avoiding insects with similar appearance. Categorization of prey types by predators could mean that wholly dissimilar mimics may be protected, provided they share some common property with noxious prey

Early Greek Thought and Perspectives for the Interpretation of Quantum Mechanics: Preliminaries to an Ontological Approach

It will be shown in this article that an ontological approach for some problems related to the interpretation of Quantum Mechanics could emerge from a re-evaluation of the main paradox of early Greek thought: the paradox of Being and non-Being, and the solutions presented to it by Plato and Aristotle. Plato's and Aristotle's systems are argued here to do on the ontological level essentially the same: to introduce stability in the world by introducing the notion of a separable, stable object, for which a principle of contradiction is valid: an object cannot be and not-be at the same place at the same time. After leaving Aristotelian metaphysics, early modern science had to cope with these problems: it did so by introducing ``space'' as the seat of stability, and ``time'' as the theater of motion. But the ontological structure present in this solution remained the same. Therefore the fundamental notion `separable system', related to the notions observation and measurement, themselves related to the modern concepts of space and time, appears to be intrinsically problematic, because it is inextricably connected to classical logic on the ontological level. We see therefore the problems dealt with by quantum logic not as merely formal, and the problem of `non-locality' as related to it, indicating the need to re-think the notions `system', `entity', as well as the implications of the operation `measurement', which is seen here as an application of classical logic (including its ontological consequences) on the material world.Comment: 18 page

Key Success Factors in Health-related Food Marketing: A Case Study Approach

Every now and then, astonishing success stories can be observed on the food market. Many of the recent examples make reference to health characteristics and arguments. In order to analyse the possibly underlying success factors, an empirical case study approach was chosen. 27 successful European Union food marketing cases were purposively sampled from the database of renowned marketing effectiveness awards as well as following a series of food market expert interviews. Success factors were analyzed in a two-step approach, first for each case and then in a case-by-case comparison structured with a card sorting method. Six groups of success factors emerged from the analysis and named "data and knowledge", "emotions", "endorsement", "media", "community" and "why and how". Several success factors appeared to be of specific importance for the issue of health characteristics and arguments. It is concluded that considering the applicability of these case derived success factors might be a recommendable way of improving food marketing campaigns, especially when referencing to health in the communication.Health Economics and Policy, Marketing,

IMPROVING SPEAKING SKILL OF THE TENTH GRADE STUDENT THROUGH MINGLE MODEL

The purposes of this study are to unveil the application of Mingle Model to enhance students’ speaking skill at tenth grade of Vocational High School Number 1 Simpangkatis, Bangka and to clarify whether there was or not a significance difference of student mastery of speaking skills between two classes; experimental class where Mingle Model was implemented and non-experimental class where there was no new model given by teacher. This study used quantitative approach with quasi experimental design. There were 72 students from two classes taken as the sample purposively; TKI 1 and TKI 2. This research applied Mingle Model as the treatment given to the experimental class. This study considers some aspects in speaking; comprehension, pronunciation, vocabulary, grammar, and fluency. From the finding, it showed that the students who were given Mingle Model treatment reached better or higher score in the post test than the students who were taught by Non-Mingle Model. In this case, the alternative hypothesis (Ha) was accepted as t-obtained, 3.56, was higher than the critical value of t-table, 2.00. Based on the evidence above, the research concluded that between the experimental and control group there was a considerable difference of students’ speaking performances. Therefore, the findings of this study confirmed that

The Rise of Innovation Districts: A New Geography of Innovation in America

As the United States slowly emerges from the great recession, a remarkable shify is occurring in the spatial geogrpahy of innovation. For the past 50 years, the landscape of innovation has been dominated by places like Silicon Valley - suburban corridors of spatially isolated corporate campuses, accessible only by car, with little emphasis on the quality of life or on integrating work, housing, and recreation. A new complementary urban model is now emerging, giving rise to what we and others are calling "innovation districts." These districts, by our definition, are geographic areas where leading-edge anchor institutions and companies cluster and connect with start-ups, business incubators, and accelerators. They are also physically compact, transit-accessible, and technicall

Estimating self-assessed personality from body movements and proximity in crowded mingling scenarios

ArtículoThis paper focuses on the automatic classi cation of self- assessed personality traits from the HEXACO inventory du- ring crowded mingle scenarios. We exploit acceleration and proximity data from a wearable device hung around the neck. Unlike most state-of-the-art studies, addressing per- sonality estimation during mingle scenarios provides a cha- llenging social context as people interact dynamically and freely in a face-to-face setting. While many former studies use audio to extract speech-related features, we present a novel method of extracting an individual's speaking status from a single body worn triaxial accelerometer which scales easily to large populations. Moreover, by fusing both speech and movement energy related cues from just acceleration, our experimental results show improvements on the estima- tion of Humility over features extracted from a single behav- ioral modality. We validated our method on 71 participants where we obtained an accuracy of 69% for Honesty, Consci- entiousness and Openness to Experience. To our knowledge, this is the largest validation of personality estimation carried out in such a social context with simple wearable sensors