616 research outputs found
Dr. Gerd J. Horten Professor of History - Concordia University Portland
No full textGerd Horten, author of the book \u27Radio Goes to War: The Cultural Politics of Propaganda during World War II\u27, discusses World War II propaganda and censorship. Recorded by Phil Sedgwick.
Video uploaded by Phil Sedgwick under Standard YouTube Licensehttps://commons.cu-portland.edu/humfacultymedia/1000/thumbnail.jp
Endogenous Fixprices and Sticky Price Adjustment of Risk-averse Firms
No full textA risk-averse price-setting firm which knows the quantity demanded at the status quo price but has imperfect information otherwise may choose not to change it although an otherwise identical risk-neutral firm would do so, provided the variance of the firm's subjective probability distribution over quantities demanded as a function of price displays a kink at the status quo. This is equivalent to risk aversion of order one. When no such endogenous fixprice exists, the size of price adjustment still tends to zero as risk aversion tends to infinity, and to any arbitrarily small menu cost there exists a degree of risk aversion so that the firm will not adjust.fixed prices, price adjustment, risk aversion, menu cost
Treating gastro-oesophageal reflux disease (GERD) with sense
No full textGastro-esophageal reflux disease (GERD) is a common disorder that affects an estimated 5 % to 7 % of the global population. Management of GERD often poses a number of challenges. In this article, the author presents a number of management modalities for this condition.peer-reviewe
La place de la guerre de 1914-1918 dans l'histoire culturelle de l'Allemagne
No full textThe place of the 1914-1918 war in the cultural history of Germany, Gerd Krumeich.
Through his study of war accounts and memories, the author analyses the impact of the war experience on German culture in its individual as well as its collective aspects. That impact brought about the continuation and the diffusion of militarism and nationalism in much of the German society of the 1920s and 1930s.Krumeich Gerd. La place de la guerre de 1914-1918 dans l'histoire culturelle de l'Allemagne. In: Vingtième Siècle, revue d'histoire, n°41, janvier-mars 1994. La guerre de 1914-1918. Essais d'histoire culturelle. pp. 9-17
Differences in cerebral response to esophageal acid stimuli and psychological anticipation in GERD subtypes-An fMRI study
No full textBackground: To evaluate whether there are differences in the cerebral response to intraesophageal acid and psychological anticipation stimuli among subtypes of gastroesophageal reflux disease (GERD)
Embedding Approaches to Combining Rules and Ontologies into Autoepistemic Logic
No full textThe combination of rules and ontologies has a central role
in the ongoing development of the Semantic Web. In previous
work, autoepistemic logic (AEL) was advocated as a
uniform host formalism to study different such combinations,
enabling comparisons on a common basis. In this paper, we
continue this line of research and investigate different embeddings
of major proposals to combine rules and ontologies
into first-order autoepistemic logic (FO-AEL). In particular,
we present embeddings for dl-programs, r-hybrid knowledge
bases, and hybrid MKNF knowledge bases, which are representatives
of different combination types. We study the embeddings
in the context of FO-AEL under the standard-names
assumption, but we also discuss variants using the any- and
all-names semantics. Our results provide interesting insights
into the properties of the discussed combination formalisms
Notions of Strong Equivalence for Logic Programs with Ordered Disjunction
No full textOrdered disjunctions have been introduced as a simple, yet
expressive approach for representing preferential knowledge
by means of logic programs. The semantics for the resulting
language is based on the answer-set semantics, but comes in
different variants, depending on the particular interpretation
of preference aggregation associated to the ordered disjunction
connective. While in standard answer-set programming
the question of when a program is to be considered equivalent
to another received increasing attention in recent years, this
problem has not been addressed for programs with ordered
disjunctions so far. In this paper, we discuss the concept of
strong equivalence in this setting. We introduce different versions
of strong equivalence for programs with ordered disjunctions
and provide model-theoretic characterisations, extending
well-known ones for strong equivalence between ordinary
logic programs. Furthermore, we discuss the relationships
between the proposed notions and study their computational
complexity
Augmenting a pH Medical Study with Wearable Video for Treatment of GERD
No full textIn this paper we present an augmentation to the wearable computers typically used to determine if a patient is a candidate for surgery to correct problems associated with Gastroesophageal Reflux Disease (GERD). A wearable camera was used by the first author while participating in a 24–hour stomach acid pH study. After the study’s conclusion, an examination of the captured video and pH record revealed some results that allowed the first author to avoid many of the activities that result in symptoms related to GERD. 1 GERD and Medical Testing Gastroesophageal Reflux Disease is a medical condition that affects 2 % of the adult population of the United States. GERD refers to the reflux of stomach acid into the esophagus and can lead to complications such as esophageal cancer and lung damage. The most common symptom of GERD is heartburn. Typical treatments for GERD include diet modification and medication; however, for some patients these treatments may prove ineffective, and the patient may be evaluated for more drastic measures such as surgery. If surgery to correct GERD is considered an option, the patient usually undergoes a 24 – or 48–hour pH study to measure the percentage of time that the patient is in reflux during normal daily activities. In the 24–hour study, a pH probe is inserted into the subject’s nose and lowered through the esophagus to a position above the stomach. Since the probe is attached to a line that is retained in the patient’s nose and throat, several pH sensors can be placed at varying locations along the patient’s esophagus. The probe is attached to a wearable computer which records the patient’s pH levels for 24 hours. The patient typically uses the wearable computer to record times of meals, periods spent in a supine position (e.g. sleeping), and occurrences of symptoms. The first author suffered from severe and relatively un
Belief Revision of Logic Programs under Answer Set Semantics
No full textWe address the problem of belief revision in (nonmonotonic)
logic programming under answer set semantics: given logic
programs P and Q, the goal is to determine a program R that
corresponds to the revision of P by Q, denoted P ∗ Q. Unlike
previous approaches in logic programming, our formal
techniques are analogous to those of distance-based belief revision
in propositional logic. In developing our results, we
build upon the model theory of logic programs furnished by
SE models. Since SE models provide a formal, monotonic
characterisation of logic programs, we can adapt well-known
techniques from the area of belief revision to revision in logic
programs. We investigate two specific operators: (logic program)
expansion and a revision operator based on the distance
between the SE models of logic programs. It proves to be the
case that expansion is an interesting operator in its own right,
unlike in classical AGM-style belief revision where it is relatively
uninteresting. Expansion and revision are shown to
satisfy a suite of interesting properties; in particular, our revision
operators satisfy the majority of the AGM postulates for
revision. A complexity analysis reveals that our revision operators
do not increase the complexity of the base formalism.
As a consequence, we present an encoding for computing the
revision of a logic program by another, within the same logic
programming framework
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