51 research outputs found
Emerging from the ‘worst’: An ethnography of the modern Filipino commuting culture behind the Metro Manila traffic crisis
Metropolitan Manila has become the world’s ‘worst’ in terms of its traffic scenarios and such crisis left an impact to the commuters which has led to the emergence of the modern Filipino commuting culture. The ethnography utilized covert participant observation in which the researchers immersed themselves in the culture and experience the activities of the commuting culture. They also conducted personal and synchronous interview to the participants involved. The findings of the study are summarized through five emergent themes which represent the roots of the culture’s existence, the commuters’ preferences on public transit modes, the features of Metro Manila commuting experiences, the coping mechanisms and adjustments done by commuters, and the desires and decisions for commuting experiences, respectively. Also, the mentioned culture reflected the Filipino values such as patience, crab mentality, and the misused value of resilience. The findings ended with a concrete recommendation to establish an Internet-based platform for Metro Manila commuters and a summary report intended for public transport stakeholders and public officials
The AFLOW Fleet for Materials Discovery
The traditional paradigm for materials discovery has been recently expanded
to incorporate substantial data driven research. With the intent to accelerate
the development and the deployment of new technologies, the AFLOW Fleet for
computational materials design automates high-throughput first principles
calculations, and provides tools for data verification and dissemination for a
broad community of users. AFLOW incorporates different computational modules to
robustly determine thermodynamic stability, electronic band structures,
vibrational dispersions, thermo-mechanical properties and more. The AFLOW data
repository is publicly accessible online at aflow.org, with more than 1.7
million materials entries and a panoply of queryable computed properties. Tools
to programmatically search and process the data, as well as to perform online
machine learning predictions, are also available.Comment: 14 pages, 8 figure
Exportation of MDR TB to europe from setting with actively transmitted persistent strains in peru
We performed a cross-border molecular epidemiology analysis of multidrug-resistant tuberculosis in Peru, Spain, and Italy. This analysis revealed frequent transmission in Peru and exportation of a strain that recreated similar levels of transmission in Europe during 2007–2017. Transnational efforts are needed to control transmission of multidrug-resistant tuberculosis globally
Data processing on simulated data for SHARK-NIR
A robust post processing technique is mandatory to analyse the coronagraphic
high contrast imaging data. Angular Differential Imaging (ADI) and Principal
Component Analysis (PCA) are the most used approaches to suppress the
quasi-static structure in the Point Spread Function (PSF) in order to revealing
planets at different separations from the host star. The focus of this work is
to apply these two data reduction techniques to obtain the best limit detection
for each coronagraphic setting that has been simulated for the SHARK-NIR, a
coronagraphic camera that will be implemented at the Large Binocular Telescope
(LBT). We investigated different seeing conditions () for stellar
magnitude ranging from R=6 to R=14, with particular care in finding the best
compromise between quasi-static speckle subtraction and planet detection.Comment: 9 pages, 8 figures, proceeding for the fifth Adaptive Optics for
Extremely Large Telescopes (AO4ELT5) meeting in 201
Properties of Graphene: A Theoretical Perspective
In this review, we provide an in-depth description of the physics of
monolayer and bilayer graphene from a theorist's perspective. We discuss the
physical properties of graphene in an external magnetic field, reflecting the
chiral nature of the quasiparticles near the Dirac point with a Landau level at
zero energy. We address the unique integer quantum Hall effects, the role of
electron correlations, and the recent observation of the fractional quantum
Hall effect in the monolayer graphene. The quantum Hall effect in bilayer
graphene is fundamentally different from that of a monolayer, reflecting the
unique band structure of this system. The theory of transport in the absence of
an external magnetic field is discussed in detail, along with the role of
disorder studied in various theoretical models. We highlight the differences
and similarities between monolayer and bilayer graphene, and focus on
thermodynamic properties such as the compressibility, the plasmon spectra, the
weak localization correction, quantum Hall effect, and optical properties.
Confinement of electrons in graphene is nontrivial due to Klein tunneling. We
review various theoretical and experimental studies of quantum confined
structures made from graphene. The band structure of graphene nanoribbons and
the role of the sublattice symmetry, edge geometry and the size of the
nanoribbon on the electronic and magnetic properties are very active areas of
research, and a detailed review of these topics is presented. Also, the effects
of substrate interactions, adsorbed atoms, lattice defects and doping on the
band structure of finite-sized graphene systems are discussed. We also include
a brief description of graphane -- gapped material obtained from graphene by
attaching hydrogen atoms to each carbon atom in the lattice.Comment: 189 pages. submitted in Advances in Physic
The Enhanced Resolution Imager and Spectrograph for the VLT
ERIS, the Enhanced Resolution Imager and Spectrograph, is an instrument that
both extends and enhances the fundamental diffraction limited imaging and
spectroscopy capability for the VLT. It replaces two instruments that were
being maintained beyond their operational lifetimes, combines their
functionality on a single focus, provides a new wavefront sensing module for
natural and laser guide stars that makes use of the Adaptive Optics Facility,
and considerably improves on their performance. The observational modes ERIS
provides are integral field spectroscopy at 1-2.5 {\mu}m, imaging at 1-5 {\mu}m
with several options for high contrast imaging, and longslit spectroscopy at
3-4 {\mu}m, The instrument is installed at the Cassegrain focus of UT4 at the
VLT and, following its commissioning during 2022, has been made available to
the community.Comment: 19 pages with 29 figures; submitted to A&
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