1,079 research outputs found
Virtual reality as an educational tool in interior architecture
Ankara : The Department of Interior Architecture and Environmental Design and the Institute of Fine Arts of Bilkent Univ., 1997.Thesis (Master's) -- Bilkent University, 1997.Includes bibliographical references.This thesis discusses the use of virtual reality technology as an educational tool in interior architectural design. As a result of this discussion, it is proposed that virtual reality can be of use in aiding three-dimensional design and visualization, and may speed up the design process. It may also be of help in getting the designers/students more involved in their design projects. Virtual reality can enhance the capacity of designers to design in three dimensions. The virtual reality environment used in designing should be capable of aiding both the design and the presentation process. The tradeoffs of the technology, newly emerging trends and future directions in virtual reality are discussed.AktaĹź, OrkunM.S
The phylogeny of pholcid spiders: a critical evaluation of relationships suggested by molecular data (Araneae, Pholcidae)
With almost 600 species, the latest molecular phylogeny of pholcid spiders (Eberle et al. 2018, BMC Evolutionary Biology) more than triples the largest previously available molecular phylogeny of the family. At the level of genera, the coverage is high (86%, i.e., 75 of the 87 named genera), and at the level of subfamilies it is complete. The present paper is an effort to critically evaluate the implications of this phylogeny for pholcid systematics. The analyses largely support the division of Pholcidae into five subfamilies: Ninetinae, Arteminae, Modisiminae, Smeringopinae, and Pholcinae. Their compositions are largely unchanged except that Chisosa Huber, 2000 is moved from Ninetinae to Arteminae. The positions of Artema Walckenaer, 1837 and Priscula Simon, 1893 in this system remain dubious. Relationships among subfamilies remain weakly supported, except for the sister group relationship between Smeringopinae and Pholcinae. Several major clades within subfamilies are separated from each other along geographical boundaries; for example within Modisiminae a South American clade and a Central + North American + Caribbean clade, and within Smeringopinae a Sub-Saharan clade and a clade ranging from the Mediterranean to Central Asia. Central + North American + Caribbean clades in both Ninetinae and Modisiminae may originate from South American ancestors.publishedVersio
Statistical Analysis and Stochastic Modelling of Foraging Bumblebees.
PhDIn the analysis of movement patterns of animals, stochastic
processes play an important role, providing us with a variety of tools to examine, model and simulate
their behaviour. In this thesis we focus on the foraging of specific animals - bumblebees - and analyse experimental data to understand the influence of changes in
the bumblebees’ environment on their search flights. Starting with a discussion of
main classes of stochastic models useful for the description of foraging animals,
we then look at a multitude of environmental factors influencing the dynamics of
animals in their search for food. With this background we examine flight data of
foraging bumblebees obtained from a laboratory experiment
by stochastic analyses. The main point of interest of this analysis is the description, modelling and
understanding of the data with respect to the influence of predatory threats on the
bumblebee’s foraging search flights. After this detail-oriented view on interactions of bumblebees with food sources and predators in the experimental data, we
develop a generalized reorientation model. By extracting the necessary information from the data, we arrive at a generalized correlated random walk foraging
model for bumblebee flights, which we discuss and compare to the experimental
data via simulations. We finish with a discussion of anomalous fluctuation relations and some results on spectral densities of autocorrelation functions. While
this part is not directly related to the analysis of foraging, it concerns a closely
related class of stochastic processes described by Langevin equations with non-
trivial autocorrelation functions analyse experimental data to understand the influence of changes in
the bumblebees’ environment on their search flights. Starting with a discussion of
main classes of stochastic models useful for the description of foraging animals,
we then look at a multitude of environmental factors influencing the dynamics of
animals in their search for food. With this background we examine flight data of
foraging bumblebees obtained from a laboratory experiment by stochastic analyses.
The main point of interest of this analysis is the description, modelling and
understanding of the data with respect to the influence of predatory threats on the
bumblebee’s foraging search flights. After this detail-oriented view on interactions
of bumblebees with food sources and predators in the experimental data, we
develop a generalized reorientation model. By extracting the necessary information
from the data, we arrive at a generalized correlated random walk foraging
model for bumblebee flights, which we discuss and compare to the experimental
data via simulations. We finish with a discussion of anomalous fluctuation relations
and some results on spectral densities of autocorrelation functions. While
this part is not directly related to the analysis of foraging, it concerns a closely
related class of stochastic processes described by Langevin equations with nontrivial
autocorrelation functions
Towards the Chalonge 16th Paris Cosmology Colloquium 2012: Highlights and Conclusions of the Chalonge 15th Paris Cosmology Colloquium 2011
The Chalonge 15th Paris Cosmology Colloquium 2011 was held on 20-22 July in
the historic Paris Observatory's Perrault building, in the Chalonge School
spirit combining real cosmological/astrophysical data and hard theory
predictive approach connected to them in the Warm Dark Matter Standard Model of
the Universe: News and reviews from Herschel, QUIET, Atacama Cosmology
Telescope (ACT), South Pole Telescole (SPT), Planck, PIXIE, the JWST, UFFO,
KATRIN and MARE experiments; astrophysics, particle and nuclear physics warm
dark matter (DM) searches and galactic observations, related theory and
simulations, with the aim of synthesis, progress and clarification. Philippe
Andre, Peter Biermann, Pasquale Blasi, Daniel Boyanovsky, Carlo Burigana,
Hector de Vega, Joanna Dunkley, Gerry Gilmore, Alexander Kashlinsky, Alan
Kogut, Anthony Lasenby, John Mather, Norma Sanchez, Alexei Smirnov, Sylvaine
Turck-Chieze present here their highlights of the Colloquium. Ayuki Kamada and
Sinziana Paduroiu present here their poster highlights. LambdaWDM (Warm Dark
Matter) is progressing impressively over LambdaCDM whose galactic scale crisis
and decline are staggering. The International School Daniel Chalonge issued an
statement of strong support to the James Webb Space Telescope (JSWT). The
Daniel Chalonge Medal 2011 was awarded to John C. Mather, Science PI of the
JWST. Summary and conclusions are presented by H. J. de Vega, M. C. Falvella
and N. G. Sanchez. Overall, LambdaWDM and keV scale DM particles deserve
dedicated astronomical and laboratory experimental searches, theoretical work
and simulations. KATRIN experiment in the future could perhaps adapt its set-up
to look to keV scale sterile neutrinos. It will be a a fantastic discovery to
detect dark matter in a beta decay. Photos of the Colloquium are included.
(Abridged)Comment: 65 pages, 21 figure
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