5,899 research outputs found
Were the early years of the North American fur trade a golden age for indigenous communities? (1590-1701)
The trading of furs in the north eastern regions of the American continent during the 17th century brought Europeans and indigenous people into contact with one another on a level neither had experienced before. The Europeans wished to prosper from the abundance of furs in the region, while the indigenous population quickly grew to desire the European trade goods offered to them.
This exchange being so profitable for the native populations has led some scholars to label the early fur trade as a golden age for these communities. In exploring the idea that the trade was a golden age for the indigenous people involved, this study will look at not only the material aspect of the goods they received but also the ways in which these goods changed native society: how the trade shaped relationships between both indigenous groups and Europeans, the ways in which the proximity the trade caused resulted in changes to spirituality, the introduction of diseases, as well as changes in perspectives.
This thesis aims to look at some of changes caused by the fur trade of the 17th century and see if the resulting outcomes do indeed show a golden age for indigenous people
Acrylamide formation in potato products
End of Project ReportAcrylamide, a substance classified as a potential carcinogen, occurs in heated
starchy foods at concentrations many times in excess of levels permitted in
drinking water. Early surveys indicated that levels of acrylamide in potato
products such as French fries and potato crisps were the highest of the
foodstuffs investigated. The present project addressed this issue by
determining levels of acrylamide precursors (asparagine and reducing sugars)
in raw potatoes and levels of acrylamide in (i) potato products from different
storage regimes, (ii) spot-sampled potatoes purchased from a local
supermarket, (iii) samples that received pre-treatments and were fried at
different temperatures and (iv) French fries reheated in different ovens.A risk
assessment of the estimated acrylamide intake from potato products for
various cohorts of the Irish population was also conducted
Structure and structure relaxation
A discrete--dynamics model, which is specified solely in terms of the
system's equilibrium structure, is defined for the density correlators of a
simple fluid. This model yields results for the evolution of glassy dynamics
which are identical with the ones obtained from the mode-coupling theory for
ideal liquid--glass transitions. The decay of density fluctuations outside the
transient regime is shown to be given by a superposition of Debye processes.
The concept of structural relaxation is given a precise meaning. It is proven
that the long-time part of the mode-coupling-theory solutions is structural
relaxation, while the transient motion merely determines an overall time scale
for the glassy dynamics
Constrained multi-task learning for automated essay scoring
Supervised machine learning models for
automated essay scoring (AES) usually require
substantial task-specific training data
in order to make accurate predictions for
a particular writing task. This limitation
hinders their utility, and consequently
their deployment in real-world settings. In
this paper, we overcome this shortcoming
using a constrained multi-task pairwisepreference
learning approach that enables
the data from multiple tasks to be combined
effectively.
Furthermore, contrary to some recent research,
we show that high performance
AES systems can be built with little or no
task-specific training data. We perform a
detailed study of our approach on a publicly
available dataset in scenarios where
we have varying amounts of task-specific
training data and in scenarios where the
number of tasks increases.This is the author accepted manuscript. The final version is available from Association for Computational Linguistics at http://acl2016.org/index.php?article_id=71
Structural relaxation in orthoterphenyl: a schematic mode coupling theory model analysis
Depolarized light scattering spectra of orthoterphenyl showing the emergence
of the structural relaxation below the oscillatory microscopic excitations are
described by solutions of a schematic mode--coupling--theory model
Scene Coordinate Regression with Angle-Based Reprojection Loss for Camera Relocalization
Image-based camera relocalization is an important problem in computer vision
and robotics. Recent works utilize convolutional neural networks (CNNs) to
regress for pixels in a query image their corresponding 3D world coordinates in
the scene. The final pose is then solved via a RANSAC-based optimization scheme
using the predicted coordinates. Usually, the CNN is trained with ground truth
scene coordinates, but it has also been shown that the network can discover 3D
scene geometry automatically by minimizing single-view reprojection loss.
However, due to the deficiencies of the reprojection loss, the network needs to
be carefully initialized. In this paper, we present a new angle-based
reprojection loss, which resolves the issues of the original reprojection loss.
With this new loss function, the network can be trained without careful
initialization, and the system achieves more accurate results. The new loss
also enables us to utilize available multi-view constraints, which further
improve performance.Comment: ECCV 2018 Workshop (Geometry Meets Deep Learning
Generating-function method for tensor products
This is the first of two articles devoted to a exposition of the
generating-function method for computing fusion rules in affine Lie algebras.
The present paper is entirely devoted to the study of the tensor-product
(infinite-level) limit of fusions rules.
We start by reviewing Sharp's character method. An alternative approach to
the construction of tensor-product generating functions is then presented which
overcomes most of the technical difficulties associated with the character
method. It is based on the reformulation of the problem of calculating tensor
products in terms of the solution of a set of linear and homogeneous
Diophantine equations whose elementary solutions represent ``elementary
couplings''. Grobner bases provide a tool for generating the complete set of
relations between elementary couplings and, most importantly, as an algorithm
for specifying a complete, compatible set of ``forbidden couplings''.Comment: Harvmac (b mode : 39 p) and Pictex; this is a substantially reduced
version of hep-th/9811113 (with new title); to appear in J. Math. Phy
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