161 research outputs found
Choose Exercises to Improve Official Efficiency with Left Cup Technique for Left Cuple Asters of Hanoi
Interview results have selected 61 exercises belonging to 6 groups of exercises to improve attacking efficiency with the left-hand cup technique for Hanoi men\u27s soccer players, including: Group 1: Unused exercises instrument has 18 exercises; Group 2: Exercises with equipment and bridge with 10 exercises; Group 3: Movement exercises have 9 exercises; Group 4: The exercises to kick the shuttlecock into the standard object have 11 exercises; Group 5: Exercises with a waiter have 5 exercises and Group 6: Exercises with bridge have 8 exercises with approval at the level of agreement > 70% or more and have an average score of > 3.41 - 4.20 point
Choose Test Assessment Effectiveness of Left - Hand Cup Technique for Male Hanoi Shuttlecock Athletes
Using routine methods, 8 tests were selected to evaluate the attack efficiency with the left-hand cup technique for male Hanoi shuttlecock athlete with sufficient reliability after 2 tests, and at the same time determined that there was a relationship between the two. strongly correlated with the performance of Hanoi shuttlecock athlete r > 0.789 (probability threshold P < 0.05)
Selection of Exercises to Improve the Effectiveness of Physical Education under the Project of Elective Sports Cockpitching for Female Students K2023 Hanoi Metropolitan University
The interview results have selected 36 exercises belonging to 5 exercise groups to improve the effectiveness of physical education according to the project for female Hanoi Metropolitan University students studying the optional sport of shuttlecock, including Group 1: Exercises to develop strength quickly has 7 exercises; Group 2: Strength development exercises have 6 exercises; Group 3: Exercises to develop endurance has 5 exercises; Group 4: Exercises to develop flexibility and coordination has 5 exercises; Group 5: Exercises with the bridge has 13 exercises with an agreement level of > 70% or more and an average score of > 3.41 - 4.20 points.
 
On a viscoelastic heat equation with logarithmic nonlinearity
This work deals with the following viscoelastic heat equations with logarithmic nonlinearity ut â âu + Z t 0 g(t â s)âu(s)ds = |u| pâ2u ln |u|. In this paper, we show the effects of the viscoelastic term and the logarithmic nonlinearity to the asymptotic behavior of weak solutions. Our results extend the results of Peng and Zhou [Appl. Anal. 100(2021), 2804â2824] and Messaoudi [Progr. Nonlinear Differential Equations Appl. 64(2005), 351â356.]
A Design of Similar High-gain and Dual-band Frequency/Polarization Reconfigurable Antenna for ISM Band Applications
This paper proposes a frequency/polarization reconfigurable antenna (RA) incorporating with Frequency Selective Surface (FSS) to achieve dual-band and similar high-gain characteristics. The proposed RA-FSS design using 4 PIN Diodes can switch between circular polarization (CP) at 1.8 GHz and linear polarization at 2.45 GHz. The fabricated prototype shows good CP performance at 1.8 GHz while the measured peak broadside gains are about 7.2 dBi at 1.8 GHz and 8.5 dBi at 2.45 GHz when PIN diode ON and OFF, respectively
Multisensor Data Fusion for Reliable Obstacle Avoidance
In this work, we propose a new approach that combines data from multiple
sensors for reliable obstacle avoidance. The sensors include two depth cameras
and a LiDAR arranged so that they can capture the whole 3D area in front of the
robot and a 2D slide around it. To fuse the data from these sensors, we first
use an external camera as a reference to combine data from two depth cameras. A
projection technique is then introduced to convert the 3D point cloud data of
the cameras to its 2D correspondence. An obstacle avoidance algorithm is then
developed based on the dynamic window approach. A number of experiments have
been conducted to evaluate our proposed approach. The results show that the
robot can effectively avoid static and dynamic obstacles of different shapes
and sizes in different environments.Comment: In the 11th International Conference on Control, Automation and
Information Sciences (ICCAIS 2022), Hanoi, Vietna
Slip Resistance Test Apparatus of Synthetic Rubber Trackpad on Photovoltaic Surface
The increasing development of the solar energy industry in many countries has
led to a rising frequency of human and robot presence in this area. To ensure
occupational safety, various protective equipment, including rubber material,
is commonly used for slip resistance while moving on the surface of solar PV
panels. Therefore, the slip resistance test apparatus is built for testing the
slip resistance between the synthetic rubber trackpad and the photovoltaic
panel (PV) surface. Synthetic rubber is a man-made material, so it is difficult
to control the parameters of its mechanical and chemical properties absolutely.
Variations in wet/dry working conditions or Shore hardness are factors that
make slip computation more challenging. Therefore, an apparatus with the
principle of converting the reciprocating motion of the screw and the casters
into the rotation of the hinge is introduced to adjust the tilt angle of the
upper surface, detect and evaluate the slippage of the rubber trackpad by
sensors. Some parameters related to accuracy such as vibration and
theoretical-empirical assessment, are also mentioned. In addition to designing
a reliable apparatus, the article also succeeded in providing a safety standard
for synthetic rubber with Shore A30-A40 when moving on PV surfaces.Comment: 4 pages, 10 figures, The 20th International Conference on Ubiquitous
Robots (UR 2023
Trajectory Tracking Control Design for Dual-Arm Robots Using Dynamic Surface Controller
This paper presents a dynamic surface controller (DSC) for dual-arm robots (DAR) tracking desired trajectories. The DSC algorithm is based on backstepping technique and multiple sliding surface control principle, but with an important addition. In the design of DSC, low-pass filters are included which prevent the complexity in computing due to the âexplosion of termsâ, i.e. the number of terms in the control law rapidly gets out of hand. Therefore, a controller constructed from this algorithm is simulated on a four degrees of freedom (DOF) dual-arm robot with a complex kinetic dynamic model. Moreover, the stability of the control system is proved by using Lyapunov theory. The simulation results show the effectiveness of the controller which provide precise tracking performance of the manipulator
VulCurator: A Vulnerability-Fixing Commit Detector
Open-source software (OSS) vulnerability management process is important
nowadays, as the number of discovered OSS vulnerabilities is increasing over
time. Monitoring vulnerability-fixing commits is a part of the standard process
to prevent vulnerability exploitation. Manually detecting vulnerability-fixing
commits is, however, time consuming due to the possibly large number of commits
to review. Recently, many techniques have been proposed to automatically detect
vulnerability-fixing commits using machine learning. These solutions either:
(1) did not use deep learning, or (2) use deep learning on only limited sources
of information. This paper proposes VulCurator, a tool that leverages deep
learning on richer sources of information, including commit messages, code
changes and issue reports for vulnerability-fixing commit classifica- tion. Our
experimental results show that VulCurator outperforms the state-of-the-art
baselines up to 16.1% in terms of F1-score. VulCurator tool is publicly
available at https://github.com/ntgiang71096/VFDetector and
https://zenodo.org/record/7034132#.Yw3MN-xBzDI, with a demo video at
https://youtu.be/uMlFmWSJYOE.Comment: accepted to ESEC/FSE 2022, Tool Demos Trac
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