Developmental Stages of Perception and Language Acquisition in a Perceptually Grounded Robot

The objective of this research is to develop a system for language learning based on a minimum of pre-wired language-specific functionality, that is compatible with observations of perceptual and language capabilities in the human developmental trajectory. In the proposed system, meaning (in terms of descriptions of events and spatial relations) is extracted from video images based on detection of position, motion, physical contact and their parameters. Mapping of sentence form to meaning is performed by learning grammatical constructions that are retrieved from a construction inventory based on the constellation of closed class items uniquely identifying the target sentence structure. The resulting system displays robust acquisition behavior that reproduces certain observations from developmental studies, with very modest “innate” language specificity

How perilous are broad-scale correlations with environmental variables?

Many studies correlate geographic variation of biotic variables (e.g., species ranges, species richness, etc.) with variation in environmental variables (climate, topography, history). Often, the resulting correlations are interpreted as evidence of causal links. However, both the dependent and independent variables in these analyses are strongly spatially structured. Several studies have suggested that spatially structured variables may be significantly correlated with one another despite the absence of a causal link between them. In this study we ask: if two variables are spatially structured, but causally unrelated, how strong is the expected correlation between them? As a specific example, we consider the correlations between broad-scale variation in gamma species richness and climatic variables. Are these correlations likely to be statistical artefacts? To answer these questions, we randomly generated pseudo-climatic variables that have the same range and spatial autocorrelation as temperature and precipitation in the Americas. We related mammal and bird species richness both to the real and the pseudo-climatic variables. We also observed the correlations among pseudo-climate simulations. Correlations among randomly generated, spatially unstructured, variables are very small. In contrast, the median correlations between spatially structured variables are near r2=0.1 – 0.3, and the 95% confidence limits extend to r2=0.6 – 0.7. Viewing this as a null expectation, given spatially structured variables, it is worth nothing that published richness–climate correlations are typically marginally stronger than these values. However, many other published richness–environment correlations would fail this test. Tests of the “predictive ability” of a correlation cannot reliably distinguish correlations due to spatial structure from causal relationships. Our results suggest a three-part update of Tobler’s “First Law of Geography”: #1) Everything in geography that is spatially structured will be collinear. #2) Near things are more related than distant things. #3) The more strongly spatially structured two variables are, the stronger the collinearity between them will be

Alien Registration- Boucher, David (Lewiston, Androscoggin County)

https://digitalmaine.com/alien_docs/30555/thumbnail.jp

Invoking a world of ideas : theory and interpretation in the justification of colonialism

Abstract: In this article I want to draw upon examples from European settlement in the Americas, Australasia and South Africa in order to argue that modern colonisation and imperialism, despite considerable variation, drew upon a range of justificatory principles which constituted a background theory, or worldview, that was invoked in part or in its entirety in justifying the civilising mission which was viewed by its proponents as both a right and a duty. I begin by showing how the infamous ‘Requirement’ (‘Requerimiento’) of 1513 becomes intelligible as a performative utterance when connected to the constellation of ideas which makes it warrantably assertible, to use John Dewey’s terminology. It is not so much about the land or its use in conceptual terms but instead about the larger value judgements the colonists were applying. It is contended that despite the variation in emphases and conclusions, and the different levels of discourse at which justifications are offered, the efficacy and veracity of colonial and imperialist justifications invoke the authority of the world of ideas in which the assertions alone have intelligibility

Mooselookmeguntic Lake Fishery Management

March, 2008, Fishery Interim Summary Series No. 08-03https://digitalcommons.usm.maine.edu/maine-ifw/1003/thumbnail.jp

Multilateral cooperation behind the trade war headlines. CEPS Policy Contribution 08 Feb 2021.

This paper highlights the importance of multilateral cooperation as an avenue for tackling technical barriers to trade (TBTs). These non-tariff barriers are some of the most prevalent affecting global trade. While the US-China trade war and its tariff escalation was grabbing headlines, multilateral cooperation was happening behind the scenes. The World Trade Organisation (WTO) TBT Committee has spent the past decade removing €80 billion worth of unnecessary trade costs affecting EU exports. This paper advocates the need for a renewed multilateral impetus in addressing TBT concerns as part of our post-Covid global recovery

The Roles of Labor and Profitability in Choosing a Grazing Strategy for Beef Production in the U.S. Gulf Coast Region

Comparisons are made concerning labor required and profitability associated with continuous grazing at three stocking rates and rotational grazing at a high stocking rate in the U.S. Gulf Coast region. A unique data set was collected using a time and motion study method to determine labor requirements. Profits are lowest for low stocking rate– continuous grazing and high stocking rate–rotational grazing. Total labor and labor in three specific categories are greater on per acre and/or per cow bases with rotational-grazing than with continuous-grazing strategies. These results help to explain relatively low adoption rates of rotational grazing in the region.labor requirements, rotational grazing, stocking rate, time and motion study, Agribusiness, Food Consumption/Nutrition/Food Safety, Industrial Organization, Labor and Human Capital, Livestock Production/Industries, Q12, Q24,