3,169 research outputs found
Building A Face Authentication System Using Face API In The Data Center System
In the era of strong development of technology along with artificial intelligence, face recognition algorithms are more and more accurate and widely applied to life. Researchers began to spend a lot of time studying facial recognition technology. The project building a face authentication system using Face API in the data center system is done through research on how Windows 10 IoT Core operating system works on Raspberry Pi 3 and experimenting with the Face API service toolkit for authentication and face recognition. Since then, the project has brought some results with highly practical applications such as bringing problems from theory to practice, specifically the face recognition door system with the accuracy on the physical door system model to be 90%; which makes opening or closing doors more secure; The product can be applied to the company, enterprise: exit and entrance to data center room, machine room, classroom, office...; Apply facial recognition technology to different purposes easily
EXTRACURRICULAR SPORTS: POPULAR CONTENTS AND FORMS AMONG STUDENTS IN THE DORMITORY OF VIETNAM NATIONAL UNIVERSITY HO CHI MINH CITY
This article is written to provide thorough information about popular contents and forms of extracurricular sports performed by university students at a dormitory of Vietnam National University Ho Chi Minh City (VNUHCMC). The study uses document references, surveys, and statistical mathematics to investigate what extracurricular sports are favored by the students and how they organize their practices. The results indicate that the majority of students choose to practice football, volleyball, badminton, athletics, and martial arts. They play with themselves and/or in teams, without instructors, from 30 minutes to 02 hours in the afternoon after school time and/or in the morning, at the dormitory and/or sports centers. Article visualizations
PHYSICAL CONDITION OF MALE STUDENTS AT VIETNAM NATIONAL UNIVERSITY OF HO CHI MINH CITY DORMITORY
The purpose of the study is to provide information about the current physical condition of 19-year-old male students of the Vietnam National University of Ho Chi Minh City (VNUHCMC) dormitory. The research used the methods of synthesizing sport-related documents, interviewing experts, applying pedagogical tests, and statistical analysis to determine appropriate physical fitness assessment tests. Afterward, the figures for the physical condition of male students at the VNUHCMC dormitory were compared with that of the average Vietnamese people, of Hanoi National University (HNU), University of Danang (UD), Can Tho University (CTU), and Ho Chi Minh City (HCMC) students at the same age and gender, and with the standard shown in Decision 53/2008/BGDDT of the Ministry of Education and Training. The results show that the “good” group accounts for 28.75%, the “acceptable” group for 23.19% and the “failed” group for 48.06%. It is notable that the agility, leg muscular strength, endurance, and motor skills of 19-year-old male students at the VNUHCMC dormitory are greater than the average physical fitness of Vietnamese people, as well as students of the same age and gender at HNU, UD, and CTU. Their endurance is also higher than that of male HCMC pupils of the same age, but their leg muscular strength and motor abilities are almost comparable. Article visualizations
Anti-DreamBooth: Protecting users from personalized text-to-image synthesis
Text-to-image diffusion models are nothing but a revolution, allowing anyone,
even without design skills, to create realistic images from simple text inputs.
With powerful personalization tools like DreamBooth, they can generate images
of a specific person just by learning from his/her few reference images.
However, when misused, such a powerful and convenient tool can produce fake
news or disturbing content targeting any individual victim, posing a severe
negative social impact. In this paper, we explore a defense system called
Anti-DreamBooth against such malicious use of DreamBooth. The system aims to
add subtle noise perturbation to each user's image before publishing in order
to disrupt the generation quality of any DreamBooth model trained on these
perturbed images. We investigate a wide range of algorithms for perturbation
optimization and extensively evaluate them on two facial datasets over various
text-to-image model versions. Despite the complicated formulation of DreamBooth
and Diffusion-based text-to-image models, our methods effectively defend users
from the malicious use of those models. Their effectiveness withstands even
adverse conditions, such as model or prompt/term mismatching between training
and testing. Our code will be available at
\href{https://github.com/VinAIResearch/Anti-DreamBooth.git}{https://github.com/VinAIResearch/Anti-DreamBooth.git}.Comment: Project page: https://anti-dreambooth.github.io
Universality in odd-even harmonic generation and application in terahertz waveform sampling
Odd-even harmonics emitted from a laser-target system imprint rich, subtle
information characterizing the system's dynamical asymmetry, which is desirable
to decipher. In this Letter, we discover a simple universal relation between
the odd-even harmonics and the asymmetry of the THz-assisted laser-atomic
system -- atoms in a fundamental mid-IR laser pulse combined with a THz laser.
First, we demonstrate numerically and then analytically formulize the harmonic
even-to-odd ratio as a function of the THz electric field, the source of the
system's asymmetry. Notably, we suggest a scaling that makes the obtained rule
universal, independent of the parameters of both the fundamental pulse and
atomic target. This universality facilitates us to propose a general pump-probe
scheme for THz waveform sampling from the even-to-odd ratio, measurable within
a conventional compact setup
In Operando Study of High-Performance Thermoelectric Materials for Power Generation:A Case Study of β-Zn<sub>4</sub>sb<sub>3</sub>
Experiences from a rural water supply and sanitation programme, Vietnam
Experiences from a rural water supply and sanitation programme, Vietna
A Spitzer high resolution mid-infrared spectral atlas of starburst galaxies
We present an atlas of Spitzer/IRS high resolution (R~600) 10-37um spectra
for 24 well known starburst galaxies. The spectra are dominated by
fine-structure lines, molecular hydrogen lines, and emission bands of
polycyclic aromatic hydrocarbons. Six out of the eight objects with a known AGN
component show emission of the high excitation [NeV] line. This line is also
seen in one other object (NGC4194) with, a priori, no known AGN component. In
addition to strong polycyclic aromatic hydrocarbon emission features in this
wavelength range (11.3, 12.7, 16.4um), the spectra reveal other weak
hydrocarbon features at 10.6, 13.5, 14.2um, and a previously unreported
emission feature at 10.75um. An unidentified absorption feature at 13.7um is
detected in many of the starbursts. We use the fine-structure lines to derive
the abundance of neon and sulfur for 14 objects where the HI 7-6 line is
detected. We further use the molecular hydrogen lines to sample the properties
of the warm molecular gas. Several basic diagrams characterizing the properties
of the sample are also shown. We have combined the spectra of all the pure
starburst objects to create a high S/N template, which is available to the
community.Comment: 25 pages (emulate apj), 6 tables, 14 figures, Accepted for
publication in ApJ
Post-starburst galaxies: more than just an interesting curiosity
From the VIMOS VLT DEEP Survey (VVDS) we select a sample of 16 galaxies with
spectra which identify them as having recently undergone a strong starburst and
subsequent fast quenching of star formation. These post-starburst galaxies lie
in the redshift range 0.510^9.75Msun. They have a number
density of 1x10^-4 per Mpc^3, almost two orders of magnitude sparser than the
full galaxy population with the same mass limit. We compare with simulations to
show that the galaxies are consistent with being the descendants of gas rich
major mergers. Starburst mass fractions must be larger than ~5-10% and decay
times shorter than ~10^8 years for post-starburst spectral signatures to be
observed in the simulations. We find that the presence of black hole feedback
does not greatly affect the evolution of the simulated merger remnants through
the post-starburst phase. The multiwavelength spectral energy distributions of
the post-starburst galaxies show that 5/16 have completely ceased the formation
of new stars. These 5 galaxies correspond to a mass flux entering the
red-sequence of rhodot(A->Q, PSB) = 0.0038Msun/Mpc^3/yr, assuming the defining
spectroscopic features are detectable for 0.35Gyr. If the galaxies subsequently
remain on the red sequence, this accounts for 38(+4/-11)% of the growth rate of
the red sequence. Finally, we compare our high redshift results with a sample
of galaxies with 0.05<z<0.1 observed in the SDSS and UKIDSS surveys. We find a
very strong redshift evolution: the mass density of strong post-starburst
galaxies is 230 times lower at z~0.07 than at z~0.7.Comment: 18 pages, 12 figures, to match version accepted to MNRAS. Minor
reordering of text in places and Sec 2.2 on SPH simulation comparisons
expande
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