Showing papers in "Eureka in 2014"
TL;DR: This work discusses Golay sequences as Golay himself defined them, presenting his results on their lengths and his direct and recursive constructions, and presents the basic extensions of Golay sequence: Golay sets, and multiple L-shift complementary sequences.
Abstract: First, I will discuss Golay sequences as Golay himself defined them, presenting his results on their lengths and his direct and recursive constructions. I will then discuss the broadest generalization yet defined, Golay array pairs. It is fruitful to understand complementary sequences as a special case of Golay array pairs, rather than Golay array pairs simply as an extension of the more fundamental complementary sequences. First, I will discuss their basic properties, and then the ways in which they can be transformed into higher or lower dimensional arrays. Secondly, within the context of Golay array pairs, I will discuss the other main generalizations and developments, beginning with Jedwab and Davis’ non-recursive structure, which led to the division of standard and non-standard Golay sequences, both of which I will discuss. Thirdly, I will present the basic extensions of Golay sequences: Golay sets, and multiple L-shift complementary sequences.
11 citations
TL;DR: In this article, a tapered hollow Bragg waveguide is used to observe the "trapped rainbow" in the visible, and vertical out-of-plane radiation is observed at wavelength dependant positions along the length of the waveguide.
Abstract: Experimental observation of the ‘trapped rainbow’ in the visible is demonstrated using tapered hollow Bragg waveguides. These waveguides spatially disperse an input spectrum into its various frequency components and vertical out of plane radiation was observed at wavelength dependant positions along the entire length of the waveguide. The experimental observation is corroborated by a brief theoretical analysis and simulation. These devices form the foundation for future work involving integration into a micro-spectrometer for eventual lab-on-chip use.
1 citations
Journal Article•
TL;DR: The carrera de Psicología was descalificada durante los gobiernos militares, principalmente de 1976 al 1983, a raíz de la ley 17132 sancionada bajo el gobierno de Onganía as discussed by the authors.
Abstract: En Argentina la carrera de Psicología fue descalificada durante los gobiernos militares, principalmente de 1976 al 1983, siendo cerrada la Facultad Filosofía y Letras donde se desarrollaban los estudios de la Licenciatura en Psicología, siendo el ejercicio de psicólogo reducido al de administrador de test, a raíz de la ley 17132 sancionada bajo el gobierno de Onganía. Fue en el gobierno de Alfonsín donde se llevó a revisión el ejercicio del psicólogo clínico, otorgándole la exclusividad conjuntamente con los médicos y médicos psiquiatras del ejercicio de la psicoterapia. Se ha observado –y que constituye la base de esta investigaciónque el psicólogo no cuelga su diploma, dando lugar, entonces, a que otras profesiones ejerzan ilegalmente la psicología clínica. Una muestra de 700 psicólogos fueron encuestados con resultados significativos. El 31% cuelga su diploma en el consultorio, mientras que un 69% no le resulta importante exhibir su título.
1 citations
TL;DR: In this article, the authors provide an introduction and general explanation of the essential premise of TMT, and explain in detail one of the most integral aspects of the theory, the projection of death-anxiety from an individual onto a person, object, or abstraction, known in TMT as transference.
Abstract: Terror Management theory is a refinement on Psychoanalytic theory that places the knowledge and resulting fear of mortality as the primary motivating factor in human behaviour. Based largely on the work of cultural anthropologist Ernest Becker, the theory seeks to examine human nature from an existential standpoint, and use psychoanalytic observation to create a comprehensive theory of the subconcious factors that comprise human behaviour. This paper seeks to provide an introduction and general explanation of the essential premise of Terror Management Theory, and explain in detail one of the most integral aspects of the theory, the projection of death-anxiety from an individual onto a person, object, or abstraction, known in TMT as transference. The ideas developed in the first part of the paper are then used to develop an existentialist psychoanalytic rationale behind the extremist behaviour of the radical Islamic terrorist organisation Al Qa'ida. The paper concludes by conducting a brief review of the scientific research studies that have in the past few decades succeeded in providing solid experimental data that supports the predictions made by Terror Managment Theory.
1 citations
TL;DR: In this paper, a discussion on the many positive aspects of undergraduate research to students considering involvement that are often under-presented is presented. And the authors highlight new initiatives at the University of Alberta as well as showcasing the excellence of research that is presently being performed by students at our institution.
Abstract: On November 17, 2011 I had the great pleasure of presenting to some 200 students, parents, and faculty at the first every University of Alberta Undergraduate Research Symposium. This Letter to the Editor addresses my discussion on the many positive aspects of undergraduate research to students considering involvement that are often under-presented. Beyond the assigned research, multiple potentially beneficial opportunities exist including course/elective credit, monetary remuneration, development of contacts and references, academic and personal development, and more. In addition, this letter highlights new initiatives at the University of Alberta as well as showcasing the excellence of research that is presently being performed by students at our institution.
1 citations
TL;DR: A dichotomous hair key to differentiate between adult and juvenile ungulates seen in summer wolf diets is created, however it is stressed that this key can also be used for other large carnivore diets, as it has shown merit in the identification of cougar and coyote prey items.
Abstract: We have created a dichotomous hair key to differentiate between adult and juvenile ungulates seen in summer wolf diets; however we would like to stress that this key can also be used for other large carnivore diets, as it has shown merit in the identification of cougar and coyote prey items. To our knowledge there is no mammalian hair key that is able to sufficiently differentiate between juvenile and adults of the major species in the North American Wolf’s (Canis lupus) diet, specifically, mule deer, white-tailed deer, elk, moose and bighorn sheep. We acquired juvenile hair samples starting at birth at bi-weekly to monthly intervals from various zoos, wildlife parks and rehabilitation centres over North America for all the major prey species except bighorn sheep. Main characters used to classify ungulate hair were basal scale margin distance, hair diameter and hair color. Scale margin distance and basal hair diameter was measured via a microscope ocular micrometer, with t-tests completed to assess differences between species. We were successful at differentiating between all juvenile ungulates, however juvenile deer species hair maybe very difficult to differentiate between and may only be accurately done with experience. Juvenile ungulate hair is usually smaller in diam- eter then the guard hair of adults and is more delicate in appearance. As observed in other study by De Marinis et al 2006, we too were able to differentiate juvenile ungulates by a scalloped medulla (Figure 1). We were able to distinguish juvenile moose by their ginger color appearance, large medial hair cuticle scales, and large basal hair diameter compared to other ungulate species (Figure 2). We also found the juvenile elk had smaller hair diameters then juvenile deer and appear less ridged compared to juvenile deer.
1 citations
TL;DR: This paper shows that the interpretation of the internal structure of a musical network can provide new formalisms for representing musical regularities, and can suggest new directions for representational research on musical cognition.
Abstract: We first introduce the notion of chord progressions by describing a particular example (the II-V-I) that is related to the Coltrane changes. Second, we describe the Coltrane changes using a formalism derived from previous musical investigations with neural networks (Yaremchuk & Dawson, 2005, 2008). Finally, we describe how we trained a neural network to generate the Coltrane changes, how we analyzed its internal structure, and the implications of this interpretation. In particular, we discovered that a network represented transitions between chords in a fashion that could be described in terms of a new musical formalism that we had not envisioned. In short, this paper shows that the interpretation of the internal structure of a musical network can provide new formalisms for representing musical regularities, and can suggest new directions for representational research on musical cognition.
1 citations
TL;DR: In this issue of Eureka, I am proud to share with you the exciting and innovative research projects that are being lead by undergraduate students at the University of Alberta as discussed by the authors.
Abstract: In this issue of Eureka , I am proud to share with you the exciting and innovative research projects that are being lead by undergraduate students at the University of Alberta. While I will let their work speak for themselves, I also would like to take this opportunity to reflect on the beginnings of my research career and the broad reaching effects I have found research to have.
1 citations
TL;DR: In this paper, a study was conducted from 0-20 weeks with a total of 8,500 Ross 308 females placed at two separate commercial farms to verify the estimates of metabolizable energy of maintenance (MEm).
Abstract: Feed restriction is a common tool utilized in broiler breeder production. The period of most severe feed restriction is during the rearing phase. In order to feed at the proper requirements the maintenance requirements of the birds must be estimated. Biometric models have been previously developed, however these estimates may loose accuracy due to changes in genetic selection criteria. In order to verify the estimates of metabolizable energy of maintenance (MEm), a study was conducted from 0-20 weeks with a total of 8,500 Ross 308 females placed at two separate commercial farms. The study also examined the effect of temperature on maintenance requirements of commercial broiler breeders. Although the effect of temperature was inconclusive, the estimates of maintenance requirements were consistent with other experimental findings in the literature.
TL;DR: In this article, the authors examined the relationship between the average x-ray luminosity and the orbital period of X-ray binaries using the All-Sky Monitor (ASM) data collected by the Rossi X-Ray Timing Explorer.
Abstract: The goal of this project was to examine the relationship between the average x-ray luminosity and the orbital period of x-ray binaries. Using the data gathered by the All-Sky Monitor instrument aboard the Rossi X-ray Timing Explorer, 29 sources were selected for investigation based on the intensity of the x-rays emitted from each of the sources. A literature search was then performed to gather further details on each of the sources, including orbital period, distance, hydrogen column density, and classification of each source as either low- or high-mass x-ray binaries with either neutron star or black hole companions. Sufficient data for 22 of the sources was known in order to create plots of the average luminosity versus the period, which allowed for the period-luminosity relationships for x-ray binaries to be further examined.
TL;DR: Arturo as discussed by the authors spent three months at the University of Alberta, hosted by Dr. Michael Dawson and the Biological Computation Project (BCP), exploring the BCP approach to using simple robots to explore basic ideas in embodied cognitive science.
Abstract: Arturo Pe rez is a senior undergraduate psychology student at Universidad Diego Por-tales in Santiago, Chile. In the Fall term of 2012, Arturo spent 3 months at the Universi-ty of Alberta, hosted by Dr. Michael Dawson and the Biological Computation Project (BCP). The general goal of his visit was to establish collaborative ties between this U of A laboratory and the Centro de Estudios de la Argumentacio n y el Razonamiento (CEAR) at UDP. A more specific purpose was to explore the BCP’s approach to using simple robots to explore basic ideas in embodied cognitive science. Arturo’s explora-tions involved creating, programming, and testing a new robot designed to sort ele-ments in an arena. The purpose of the current paper is to report on Arturo’s robotics research at the BCP.
TL;DR: This article examined the relationship between parenting styles, eating and dieting behaviors, and self-esteem in undergraduate psychology students and found that the influence of mother care and father control on potential eating disorder diagnosis and selfesteem were discovered.
Abstract: The current study examined the relationship between parenting styles, eating and dieting behaviors, and self-esteem in undergraduate psychology students. Standardized assessments of eating and dieting behaviors, parent care and control, and self-esteem were collected from 99 undergraduate psychology students in November 2012. Expected associations of parent care and control with undergraduate students’ eating and dieting habits and self-esteem were not found; however, results indicating the influence of mother care and father control on potential eating disorder diagnosis and self-esteem were discovered. Together, these results suggest that more research is needed to explore other characteristics of parenting that may be more related to unhealthy eating and dieting behaviours and self-esteem.
TL;DR: In this article, a research paper written in Spring 2012 about wind energy being the best energy alternative to fossil fuel energy is presented, which puts forward the different advantages, benefits and pros of shifting towards wind energy while still comparing with other alternatives.
Abstract: This is a research paper written in Spring 2012 about Wind Energy being the best energy alternative to fossil fuel energy. It puts forward the different advantages, benefits and pros of shifting towards wind energy while still comparing with other alternatives.