2,335 research outputs found
Autoencoder-based Online Data Quality Monitoring for the CMS Electromagnetic Calorimeter
The online Data Quality Monitoring system (DQM) of the CMS electromagnetic
calorimeter (ECAL) is a crucial operational tool that allows ECAL experts to
quickly identify, localize, and diagnose a broad range of detector issues that
would otherwise hinder physics-quality data taking. Although the existing ECAL
DQM system has been continuously updated to respond to new problems, it remains
one step behind newer and unforeseen issues. Using unsupervised deep learning,
a real-time autoencoder-based anomaly detection system is developed that is
able to detect ECAL anomalies unseen in past data. After accounting for spatial
variations in the response of the ECAL and the temporal evolution of anomalies,
the new system is able to efficiently detect anomalies while maintaining an
estimated false discovery rate between to , beating existing
benchmarks by about two orders of magnitude. The real-world performance of the
system is validated using anomalies found in 2018 and 2022 LHC collision data.
Additionally, first results from deploying the autoencoder-based system in the
CMS online DQM workflow for the ECAL barrel during Run 3 of the LHC are
presented, showing its promising performance in detecting obscure issues that
could have been missed in the existing DQM system.Comment: Submitted to the Proceedings of 21st International Workshop on
Advanced Computing and Analysis Techniques in Physics Research ACAT 2022
conferenc
Searching for Intelligent Life in Gravitational Wave Signals Part I: Present Capabilities and Future Horizons
We show that the Laser Interferometer Gravitational Wave Observatory (LIGO)
is a powerful instrument in the Search for Extraterrestrial Intelligence
(SETI). LIGO's ability to detect gravitational waves (GWs) from astrophysical
sources, such as binary black hole mergers, also provides the potential to
detect extraterrestrial mega-technology, such as Rapid and/or Massive
Accelerating spacecraft (RAMAcraft). We show that LIGO is sensitive to
RAMAcraft of 1 Jupiter mass accelerating to a fraction of the speed of light
(e.g. 30\%) from kpc or a Moon mass from pc. While existing
SETI searches can probe on the order of ten-thousand stars for human-scale
technology (e.g. radio waves), LIGO can probe all 10 stars in the Milky
Way for RAMAcraft. Moreover, thanks to the scaling of RAMAcraft
signals, our sensitivity to these objects will increase as low-frequency
detectors are developed and improved, allowing for the detection of smaller
masses further from Earth. In particular, we find that DECIGO and the Big Bang
Observer (BBO) will be about 100 times more sensitive than LIGO, increasing the
search volume by 10, while LISA and Pulsar Timing Arrays (PTAs) may
improve sensitivities to objects with long acceleration periods. In this paper,
we calculate the waveforms for linearly-accelerating RAMAcraft in a form
suitable for LIGO, Virgo, and KAGRA searches and provide the range for a
variety of masses and accelerations. We expect that the current and upcoming GW
detectors will soon become an excellent complement to the existing SETI
efforts.Comment: 20 pages, 12 figures, submitted to MNRAS, comments welcom
Development and evaluation of a didactic tool with augmented reality for Quechua language learning in preschoolers
"It is important to preserve our cultural identity through the preservation of our
mother tongue, contributing to its dissemination. Augmented reality (AR) is a
great ally of education that provides efficiency, and productivity and increases
the interest of students in their academic activities. An AR application was
developed for learning Quechua in preschool children, thus improving their
learning, satisfaction, and preference compared to traditional teaching.
Previously, learning styles were identified for better coverage of the
application; the design thinking methodology was applied for the
development of the application, then the respective tests were conducted
where it was obtained that the children's performance improved by 28.3%
more compared to traditional teaching, with an average satisfaction of 89% of
the classrooms, and 81% of students' preference. It was concluded that the
proposed application considerably favors the written and audiovisual learning
of the Quechua language in preschool students.
Changing Mathematical Paradigms at the University Level: Feedback from a Flipped Classroom at a Peruvian University
The university-level mathematics teaching adopted by many professors is still a traditional classroom, and many students’ perception of mathematics is that it is a complicated subject. The operationality of the flipped classroom proposal implemented at a university has a poten tial that can be used to change the perception that university students and teachers have towards the mathematics course, as well as to change the methodology of many teachers on how they teach their courses in the classroom. This research is the result of the implementa tion of the flipped classroom methodology in the basic mathematics course that is part of the professional careers of the engineering faculty of a Peruvian university. The aim of this study was to analyze the impact of applying the flipped classroom on academic results and atti tudes towards mathematics, with an experimental group of 227 students and a control group of 215 students. The academic results were measured at each of the stages indicated in the course syllabus, T1, partial exam, T2 and final exam; attitudes towards mathematics were also assessed at cognitive, procedural and affective levels at the end of the university semester. The Kolmogorov-Smirnov normality test was applied and yielded a value of p = 0.00, indicating that the grades obtained by the students did not follow a normal distribution. With the data obtained, the Mann-Whitney U test was performed, obtaining a p = 0.00 value (α = 0,052 tails). p < α makes us conclude that there are statistically significant differences between the scores of the experimental group compared to the control group. The results show a significant improvement in the academic performance and positive attitudes of students who took the course using the flipped classroom compared to those who did not use this methodolog
Convolutional Neural Networks with Transfer Learning for Pneumonia Detection
"Pneumonia is a type of acute respiratory infection
caused by microbes, and viruses that affect the lungs. Pneumonia
is the leading cause of infant mortality in the world, accounting
for 81% of deaths in children under five years of age. There are
approximately 1.2 million cases of pneumonia in children under
five years of age and 180 000 died in 2016. Early detection of
pneumonia can help reduce mortality rates. Therefore, this paper
presents four convolutional neural network (CNN) models to
detect pneumonia from chest X-ray images. CNNs were trained
to classify X-ray images into two types: normal and pneumonia,
using several convolutional layers. The four models used in this
work are pre-trained: VGG16, VGG19, ResNet50, and
InceptionV3. The measures that were used for the evaluation of
the results are Accuracy, recall, and F1-Score. The models were
trained and validated with the dataset. The results showed that
the Inceptionv3 model achieved the best performance with 72.9%
accuracy, recall 93.7%, and F1-Score 82%. This indicates that
CNN models are suitable for detecting pneumonia with high
accuracy.
Contributions of the 5G Network with Respect to Decent Work and Economic Growth (Sustainable Development Goal 8): A Systematic Review of the Literature
Decent work and economic growth are fundamental elements for the sustainable development of a society, with Sustainable Development Goal 8 (SDG8) being one of the key objectives
of the United Nations’ 2030 Agenda. The 5G network has great potential to contribute significantly
to the achievement of SDG8, offering faster and more reliable connectivity, which opens up new
possibilities for innovation, operational efficiency, and job creation. The present study aimed to
investigate the role of 5G technologies concerning decent work and economic growth (SDG8). As
part of the method, 265 articles extracted from main databases such as Scopus, IEEExplore, and
ScienceDirect were analyzed using the PRISMA methodology, resulting in 74 relevant articles after
applying the inclusion and exclusion criteria. As a result, a greater contribution to the use of the
5G network was identified in sectors such as manufacturing, health, and transportation, generating
greater economic growth and job creation. It was also found that the technological applications
with the greatest contributions are “Internet of Things” and “Artificial intelligence”. Finally, it was
concluded that the results of this review are useful for future research on technologies that support
5G networks, contributing to economic growth and equitable and sustainable decent work in a wide
range of sectors and rural areas
Neural Control of Sensory Acquisition: The Vestibulo-Ocular Reflex
We present a new hypothesis that the cerebellum plays a key role in actively
controlling the acquisition of sensory infonnation by the nervous
system. In this paper we explore this idea by examining the function of
a simple cerebellar-related behavior, the vestibula-ocular reflex or
VOR, in which eye movements are generated to minimize image slip
on the retina during rapid head movements. Considering this system
from the point of view of statistical estimation theory, our results suggest
that the transfer function of the VOR, often regarded as a static or
slowly modifiable feature of the system, should actually be continuously
and rapidly changed during head movements. We further suggest
that these changes are under the direct control of the cerebellar cortex
and propose experiments to test this hypothesis
WormBase - Annotating many nematode genomes
WormBase (www.wormbase.org) has been serving the scientific community for over 11 years as the central repository for genomic and genetic information for the soil nematode Caenorhabditis elegans. The resource has evolved from its beginnings as a database housing the genomic sequence and genetic and physical maps of a single species, and now represents the breadth and diversity of nematode research, currently serving genome sequence and annotation for around 20 nematodes. In this article, we focus on WormBase’s role of genome sequence annotation, describing how we annotate and integrate data from a growing collection of nematode species and strains. We also review our approaches to sequence curation, and discuss the impact on annotation quality of large functional genomics projects such as modENCODE
Text prediction recurrent neural networks using long shortterm memory-dropout
"Unit short-term memory (LSTM) is a type of recurrent neural network (RNN)
whose sequence-based models are being used in text generation and/or
prediction tasks, question answering, and classification systems due to their
ability to learn long-term dependencies. The present research integrates the
LSTM network and dropout technique to generate a text from a corpus as
input, a model is developed to find the best way to extract the words from the
context. For training the model, the poem ""La Ciudad y los perros"" which is
composed of 128,600 words is used as input data. The poem was divided into
two data sets, 38.88% for training and the remaining 61.12% for testing the
model. The proposed model was tested in two variants: word importance and
context. The results were evaluated in terms of the semantic proximity of the
generated text to the given context.
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