121 research outputs found
Depth and regularity of tableau ideals
We compute the depth and regularity of ideals associated with arbitrary
fillings of positive integers to a Young diagram, called the tableau ideals
VFFINDER: A Graph-based Approach for Automated Silent Vulnerability-Fix Identification
The increasing reliance of software projects on third-party libraries has
raised concerns about the security of these libraries due to hidden
vulnerabilities. Managing these vulnerabilities is challenging due to the time
gap between fixes and public disclosures. Moreover, a significant portion of
open-source projects silently fix vulnerabilities without disclosure, impacting
vulnerability management. Existing tools like OWASP heavily rely on public
disclosures, hindering their effectiveness in detecting unknown
vulnerabilities. To tackle this problem, automated identification of
vulnerability-fixing commits has emerged. However, identifying silent
vulnerability fixes remains challenging. This paper presents VFFINDER, a novel
graph-based approach for automated silent vulnerability fix identification.
VFFINDER captures structural changes using Abstract Syntax Trees (ASTs) and
represents them in annotated ASTs. VFFINDER distinguishes vulnerability-fixing
commits from non-fixing ones using attention-based graph neural network models
to extract structural features. We conducted experiments to evaluate VFFINDER
on a dataset of 36K+ fixing and non-fixing commits in 507 real-world C/C++
projects. Our results show that VFFINDER significantly improves the
state-of-the-art methods by 39-83% in Precision, 19-148% in Recall, and 30-109%
in F1. Especially, VFFINDER speeds up the silent fix identification process by
up to 47% with the same review effort of 5% compared to the existing
approaches.Comment: Accepted by IEEE KSE 202
Role of Scientific Research for Lecturers of Current Universities
Scientific research for university lecturers plays an important role in training creative thinking ability, research capacity and scientific working style for researchers. This contributes to clarifying some scientific issues and solving practical problems that arise in order to improve the quality of teaching. This article focuses on analyzing some issues about the role of scientific research for university lecturers today
High Performance Direction Finding Algorithm Based on Phase Locked Loop
Using Phase Locked Loop based single channel Direction Finding (DF) system to estimate the bearing angle or the coordinates of an incoming radio signal(s) has much more advantages than multiple receiver system does in many practical scenarios such as mobile communication. This method utilizes a bank of Phase Locked Loops (PLLs) to calculate the differential phase of signal received by an M-element uniform circular antenna array with a commutative switch followed by single channel Software Defined Radio (SDR) receiver. One important factor when using conventional phase locked loop is the requirement of the small convergence rate of the algorithm compared to the switching cycle. In order to achieve small convergence rate, we propose a method for DOA estimation with low computation complexity that improves significantly the performance of conventional PLLs system. An analysis of the challenges of computation complexity in this algorithm is presented. The simulation results for DOA estimation using the proposed structure with low complexity are shown to verify the performance of the system
Formal accounting harmonization - A new measurement scheme demonstrated by Vietnam’s data and International Financial Reporting Standards
We are living in a “flat world” of international integration and adaptive trends. This requires countries to integrate their own regulations to those from other countries. Accounting regulations are no exception. It is necessary to measure how much a nation’s accounting regulations are the same or different from those of another country or from International Financial Reporting Standards (IFRS).
Extant literature reveals a rich discussion about this topic. Many measurement schemes have been initiated and employed. However, it is argued that data classification processes in those works contain some flaws. This paper contends the data specifically used to evaluate accounting measurement issues. The data will be divided into initial and subsequent recognition because such partition collectively affects the financial report figures. Therefore, the similarity of accounting regulations as a whole should be the multiplication of initial and subsequent recognition similar degree. To this extend, this work contributes to the research theme
NetFPGA Based OpenFlow Switch Extension for Energy Saving in Data Centers
The increasing demand for data centers in both scale and size has led to huge energy consumption. The cost and environmental impact of data centers increases due to large amounts of carbon emissions. One solution to this problem is to intelligently control the power consumption of switches used in data centers. This paper proposes an extension to OpenFlow switches to support different power saving modes. The extension includes defining new messages in the OpenFlow protocol stack and designing an OpenFlow Switch Controller (OSC) that is able to turn on/off switches and disable/enable ports. To prove the soundness of the proposed extension, the functions of an OSC has been integrated in a NetFPGA based OpenFlow switch used in the ECODANE framework. The results presented in this paper can also be used by the OpenFlow compliant switches manufacturer or by power aware research community
Capsule network with shortcut routing
This study introduces "shortcut routing," a novel routing mechanism in
capsule networks that addresses computational inefficiencies by directly
activating global capsules from local capsules, eliminating intermediate
layers. An attention-based approach with fuzzy coefficients is also explored
for improved efficiency. Experimental results on Mnist, smallnorb, and affNist
datasets show comparable classification performance, achieving accuracies of
99.52%, 93.91%, and 89.02% respectively. The proposed fuzzy-based and
attention-based routing methods significantly reduce the number of calculations
by 1.42 and 2.5 times compared to EM routing, highlighting their computational
advantages in capsule networks. These findings contribute to the advancement of
efficient and accurate hierarchical pattern representation models.Comment: 8 pages, published at IEICE Transactions on Fundamentals of
Electronics Communications and Computer Sciences E104.A(8
Characterization of pig farms in Hung Yen, Hai Duong and Bac Ninh provinces
peer reviewedIn order to characterization of pig farms in the Red River Delta, a study was conducted on 90 pig farms in Hung Yen, Hai Duong and Bac Ninh provinces from June to December 2006. Results show that most of the pig farms had been built for five years with a small size (0.5 hectare per farm). The invested capital was about 300-400 millions VND per farm. Four main sow groups used in the farms included crossbred exotic sows (51.1%), crossbred sow between local and exotic breeds (14.4%), purebred Landrace and Yorkshire breeds (15.6 and 18.9%, respectively). The boars were various (Duroc 30%, Yorkshire 21%, Landrace 13%, PiÐtrain × Duroc 36% and others). The pigs farms were faced with several difficulties such as limited land, lack of invested capital, uncontrolled quality of breeding pigs, high costs of feed, poor hygiene condition and diseases
A Combination of Artificial Neural Network and Artificial Immune System for Virus Detection
In this paper, we propose an Artificial Neural Immune Network (ANIN) for virus detection. ANIN is a combination of Artificial Neural Network (ANN) and Artificial Immune Network (AiNet). In ANIN, each ANN is considered as a detector. A pool of initial detectors then undergoes a mature process, called AiNet, to improve its recognizing ability. Thus, more than one ANN objects can cooperate to detect malicious code. The experimental results show that ANIN can achieve a detection rate of 87.98% on average with an acceptable false positive rate
Academic Anxiety of Vietnamese Secondary School Students as a Reason for Applying Online Learning
Academic anxiety is one of the major problems in student psychology across the world. It applies equally to students of all ages, from elementary school to college and university students. Research shows that learning online is an effective way to defuse feelings of academic anxiety. Elimination of anxiety is clearly visible regardless of age, gender, or prior online learning experience. The study aims to identify academic anxiety as one of the most important reasons for moving to online learning or blended learning in secondary school. The study investigated academic anxiety among secondary school students in Vietnam. After surveying 677 students in classroom learning, the results showed that 13.7% of secondary students suffered from frequent anxiety, and 3.0% of them suffered from very frequent anxiety. Lower anxiety was observed among students actively participated in-class activities, and students with excellent academic performance. These factors can be optimally enhanced through blended and online learning. There were no differences in academic anxiety among male and female students, urban and rural students. There was a moderate correlation between a student's anxiety level and pressure of the school, parental expectations, students' motivation for high performance, and especially, among students who have the melancholic temperament. And the influence of these negative factors can also be optimally reduced with the help of online learning. Regression model could provide useful suggestions for parents, teachers and students in reducing academic anxiety for students, including the use of full or blended online learning
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