199 research outputs found
Improving the Efficiency of the State Budget Balance in Vietnam
The state budget balance is always an extremely important issue for each government. In 2020, Vietnam has a relatively small-scale economy. Its economic scale and GDP per capita reached 271.2 billion USD and 2,779 USD respectively. Budget revenue is still limited, but the need for recurrent spending and development investment is still very large now and in many years to come. In the past time, budget revenue and expenditure are in a situation of not having the necessary balance, the state budget deficit has been still around 4.5 percent of GDP. The actual state budget revenue and expenditure balance have been revealing several disadvantages. Faced to such a situation, the author would like to present some important issues about the state budget revenue and expenditure and propose key solutions to increase the efficiency of state budget revenue and expenditure in Vietnam
Factors Affecting the Profitability of Cement Manufacturing Enterprises in Tuyen Quang Province
This study focuses on analyzing the factors affecting the production and business efficiency of cement manufacturing enterprises in Tuyen Quang province. Production and business efficiency is measured by profitability ratios including return on assets (ROA), return on equity (ROE) and return on sales (ROS). Using a quantitative research method through estimating a linear regression model based on data of two cement manufacturing companies in the period 2019-2021, the research results show that the factors affecting business efficiency of cement manufacturing enterprises in Tuyen Quang province include size of enterprise, cost ratio, average collection period, inventory turnover, fixed assets turnover and debt ratio
Federated Few-shot Learning for Cough Classification with Edge Devices
Automatically classifying cough sounds is one of the most critical tasks for
the diagnosis and treatment of respiratory diseases. However, collecting a huge
amount of labeled cough dataset is challenging mainly due to high laborious
expenses, data scarcity, and privacy concerns. In this work, our aim is to
develop a framework that can effectively perform cough classification even in
situations when enormous cough data is not available, while also addressing
privacy concerns. Specifically, we formulate a new problem to tackle these
challenges and adopt few-shot learning and federated learning to design a novel
framework, termed F2LCough, for solving the newly formulated problem. We
illustrate the superiority of our method compared with other approaches on
COVID-19 Thermal Face & Cough dataset, in which F2LCough achieves an average
F1-Score of 86%. Our results show the feasibility of few-shot learning combined
with federated learning to build a classification model of cough sounds. This
new methodology is able to classify cough sounds in data-scarce situations and
maintain privacy properties. The outcomes of this work can be a fundamental
framework for building support systems for the detection and diagnosis of
cough-related diseases.Comment: 21 pages, 5 figure
Fear of travelling after COVID-19: The moderation effect of social distancing
COVID-19 has caused unparalleled public dread, which will most certainly impede tourist business recovery once the epidemic is gone. This research investigates the causes of the general public's epidemic travel anxiety, as well as how individuals impose self-protection, coping, and resilience with travel. The study blends theories such as protection motive theory, coping theory, and resilience theory to achieve the research goal. The primary data came from an online poll of 322 Southeast Asian travelers. According to the findings, the magnitude and vulnerability of the danger might induce "travel dread," which leads to protection motivation and precautionary travel behaviors during the pandemic. The findings also demonstrate that social distancing has memory consequences. In other words, individuals who willingly engaged in social separation during the pandemic are more likely to continue doing so in the post-COVID period since their long-term behavior has been influenced.Tomas Bata University in Zlín, TBU; Finance Authority of Maine, FAM
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
Pneumococcal infections and homelessness
Objectif. To assess the prevalence of pneumococcal nasopharyngeal carriage, the role of potential risk factors, and vaccination against invasive pneumococcal diseases (IPD) among sheltered homeless persons (HP) in Marseille, France.
Methods. In 2015–2018, we enrolled 571 sheltered homeless males and 54 non-homeless controls. Streptococcus pneumoniae was directly searched form nasal/pharyngeal samples using PCR.
Results. The HPs were predominantly middle-aged, mostly migrants originating from African countries. Pneumococcal vaccination rate was low (3.1%). The overall pneumococcal carriage rate was 13.0% and was significantly higher in HPs (15.3% in 2018) than in controls (3.7%), with p=0.033. Among HPs, being aged ≥65 years (OR=1.97, p=0.048), living in one specific shelter (OR=1.80, p=0.028), and presenting respiratory symptoms and signs at the time of enrolment (OR=2.55, p<10-4) were independent factors associated with pneumococcal carriage.
Conclusion. Pneumococcal vaccination should be systematically considered for sheltered HPs in France, as has been the case in Canada since 2008
Abietane diterpenoids and neolignans from the roots of Pinus kesiya
The phytochemical investigation of the ethyl acetate extract of Pinus kesiya Royle ex Gordon roots led to the isolation of two abietane diterpenes, 7-oxo-15-hydroxy-dehydroabietic acid (1) and dehydroabietic acid (2) as well as two neolignans, cedrusin (3) and cedrusin-4-O-β-D-glucopyranoside (4). Their structures were determined by combination of spectral analysis and comparison with reported data. Among them, compound 1 was isolated from the genus Pinus for the first time. Keywords. Pinus kesiya, abietane diterpenes, neolignans, dehydroabietic acid, cedrusin
Detailed analysis of distorted retinal and its interaction with surrounding residues in the K intermediate of bacteriorhodopsin
The K intermediate of proton pumping bacteriorhodopsin is the first intermediate generated after isomerization of retinal to the 13-cis form. Although various structures have been reported for the K intermediate until now, these differ from each other, especially in terms of the conformation of the retinal chromophore and its interaction with surrounding residues. We report here an accurate X-ray crystallographic analysis of the K structure. The polyene chain of 13-cis retinal is observed to be S-shaped. The side chain of Lys216, which is covalently bound to retinal via the Schiff-base linkage, interacts with residues, Asp85 and Thr89. In addition, the Nζ-H of the protonated Schiff-base linkage interacts with a residue, Asp212 and a water molecule, W402. Based on quantum chemical calculations for this K structure, we examine the stabilizing factors of distorted conformation of retinal and propose a relaxation manner to the next L intermediate
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