102 research outputs found
CLASSIFICATION OF T\TEUROMUSCIILAR DISORDERSI BASED ON ELECTROMYOGRAPTTY (EMG) SIGNALS
Electromyography (EMG) signals are the measune of activity in the muscles. The
motion of the muscles will be generated and recorded using skin surface electrodes.
EMG signals can be found from anywhere on the exterior of human's body such as
biceps, triceps, shoulder, arm, hand, leg. The aim of this project is to identifr the
neuromuscular diseases based on EMG signals by means of classification. The
ncuromuscular diseases that have been identified are healthy, myopathy and
neuropathy. The signals weIE taken and analyzed from EMG lab database to become
datasets for classification system. The classification was carried out using Artilicial
Neural Network. In this project, there are two techniques that used to classifr three
different types of muscular disorders such as Multilayer Perceptron (MLP) and
Wavelet Neural Network (WlIhI). And the input that applied to these systems using
feature extraction from EMC signals. In time domain, five feature extraction
techniques that used to exmct the sample of signal such as Autoregressive (AR),
Root mean square (RMS), Zero crossing (zc), waveform length (wL) and Mean
Absolute Value (MA$. The comparison between different techniques will be
included based on the accuracy of the result. The input data has been used in
Multilayer Perceptron (MtP) to train the classification system. Besides that,
frequency domain was used for extracting the useful information from EMG signal
for Wavelet neural network (wl[Nr) such as Power Spectrum Density (pSD), both
systems were hained and the test performances were examined after training to
provide the best result
CLASSIFICATION OF T\TEUROMUSCIILAR DISORDERSI BASED ON ELECTROMYOGRAPTTY (EMG) SIGNALS
Electromyography (EMG) signals are the measune of activity in the muscles. The
motion of the muscles will be generated and recorded using skin surface electrodes.
EMG signals can be found from anywhere on the exterior of human's body such as
biceps, triceps, shoulder, arm, hand, leg. The aim of this project is to identifr the
neuromuscular diseases based on EMG signals by means of classification. The
ncuromuscular diseases that have been identified are healthy, myopathy and
neuropathy. The signals weIE taken and analyzed from EMG lab database to become
datasets for classification system. The classification was carried out using Artilicial
Neural Network. In this project, there are two techniques that used to classifr three
different types of muscular disorders such as Multilayer Perceptron (MLP) and
Wavelet Neural Network (WlIhI). And the input that applied to these systems using
feature extraction from EMC signals. In time domain, five feature extraction
techniques that used to exmct the sample of signal such as Autoregressive (AR),
Root mean square (RMS), Zero crossing (zc), waveform length (wL) and Mean
Absolute Value (MA$. The comparison between different techniques will be
included based on the accuracy of the result. The input data has been used in
Multilayer Perceptron (MtP) to train the classification system. Besides that,
frequency domain was used for extracting the useful information from EMG signal
for Wavelet neural network (wl[Nr) such as Power Spectrum Density (pSD), both
systems were hained and the test performances were examined after training to
provide the best result
NOWJ1@ALQAC 2023: Enhancing Legal Task Performance with Classic Statistical Models and Pre-trained Language Models
This paper describes the NOWJ1 Team's approach for the Automated Legal
Question Answering Competition (ALQAC) 2023, which focuses on enhancing legal
task performance by integrating classical statistical models and Pre-trained
Language Models (PLMs). For the document retrieval task, we implement a
pre-processing step to overcome input limitations and apply learning-to-rank
methods to consolidate features from various models. The question-answering
task is split into two sub-tasks: sentence classification and answer
extraction. We incorporate state-of-the-art models to develop distinct systems
for each sub-task, utilizing both classic statistical models and pre-trained
Language Models. Experimental results demonstrate the promising potential of
our proposed methodology in the competition.Comment: ISAILD@KSE 202
Design of Mobile Manipulator for Fire Extinguisher Testing. Part I Key Specifications and Conceptual Design
All flames are extinguished as early as possible, or fire services have to
deal with major conflagrations. This leads to the fact that the quality of fire
extinguishers has become a very sensitive and important issue in firefighting.
Inspired by the development of automatic fire fighting systems, this paper
proposes key specifications based on the standard of fire extinguishers that is
ISO 7165:2009 and ISO 11601:2008, and feasible solutions to design a mobile
manipulator for automatically evaluating the quality or, more specifically,
power of fire extinguishers. In addition, a part of the mechanical design is
also discussed.Comment: 10 pages, 8 figures, the 7th International Conference on Advanced
Engineering, Theory and Application
Anatomical Characteristics and Variants of Prostatic Artery in Patients of Benign Hyperplasia Prostate by Digital Subtraction Angiography
AIM: This work is aimed to describe anatomical features and variants of the prostatic artery (PA) using digital subtraction angiography (DSA).
METHODS: This is a descriptive statistic study. We reviewed the DSA of 348 patients, who had a PA embolisation to reduce the benign prostatic hyperplasia (BPH) symptoms at Radiology Department of Bach Mai Hospital from Oct – 2014 to Oct – 2018.
RESULTS: PA was found at 660 pelvic halves, of which 30 pelvic halves (4.5%) had two PAs, 630 pelvic halves had one PA. In terms of the origin of PA, in total 690 PAs, the percentage of type 1, 2, 3, 4 and 5 was successively 33.9%, 13.9%, 18.3%, 23.9% and 10.4%, respectively. Atherosclerosis of PA observed in 20.9%. The ‘corkscrew’ pattern was found in 30.4%. The average diameter of PA was 1.5 ± 0.34mm. The anastomosis of PA with surrounding arteries was common. PA may supply rectum (6.1%), seminal vesical (9.6%), bladder (5.2%), contralateral prostatic parenchyma (13.0%), surrounding soft-tissues (3.5%).
CONCLUSION: The common trunk with SVA superior vesical artery was the most common origin of PA. Anastomoses of PA with surrounding tissues were complex
Clinical Characteristics and Histopathology of Idiopathic Epiretinal Membrane in Vietnam
BACKGROUND: Idiopathic epiretinal membrane (iERM) is an avascular proliferation of different types of cells between the posterior vitreous cortex and the internal limiting membrane. That causes visual impairment including blurry, distortion, scotoma. Many studies of iERM were done to describe the clinical characteristics and investigate the histopathology of this disease. Nonetheless, there has not been a study of iERM histopathology in Vietnam.
AIMS: To describe clinical characteristics and histopathological results of idiopathic retinal membrane and the association between them.
METHODS: A cross sectional decriptive study of 35 iERMs (33 patients) in Vietnam National Institute of Ophthalmology (VNIO).
RESULTS: High morbidity incidence was in group age >50 years (32/35), female gender (26/35), limited movement works (27/35), and high educational levels (28/35). Distortion was the highest (77.14%), scotoma and floater was less frequent (28.5%, 45.7%). Macular edema in all cases and PVD and exudate were high frequent (65.7%, 62.8%). Symptom duration was 8.2 ± 4.7 months, (1-21 months). Mean of central macular thickness was 468.51 ± 97.24 µm (656-274 µm). Six types of cell were detected, including glial cell (35/35), fibroblast (23/35), myofibroblast (23/35), macrophage (13/35), lymphocyte (5/35) and neutrophil (2/35). The number of cell types in one sample ranged from 1-5 types (2.85 ± 1.28 cell types). Number of cell types were correlated to symptom duration (r = 0.47, p = 0.004, Pearson's test) and central macular thickness (r = 0.72, p < 0.001, Pearson's test).
CONCLUSION: There were 6 types of cells in iERM. Glial cell was the most frequent cell, inflammatory cells (macrophage, lymphocyte, neutrophil) was also detected. The number of cell types was stastitically correlated to symptom duration and CMT
A modern purification by accelerated solvent extraction and centrifugal partition chromatography and biological evaluation of capsaicin from Capsicum chinense
A special alkaloid compound known as capsaicin, which can only be found in the fruit of the Capsicum plant, was isolated and tested for its anti-inflammatory activity. The purpose of this work is to establish a simple and quick approach for capsaicin purification utilizing centrifugal partition chromatography (CPC) as well as an effective method - accelerated solvent extraction (ASE), for extracting capsaicin from Capsicum chinense. After purification, capsaicin was validated by HPLC-DAD at 281 nm to be > 90% purity. The in vivo anti-inflammatory activity of the isolated capsaicin was also investigated, and the IC50 value of the capsaicin was determined to be 57.61 µg/mL. The current work emphasizes how an ASE and CPC system may combine to extract high-purity capsaicin from Capsicum chinense, which have the anti-inflammatory activity, as we evaluated in the experiment
Red light emission of Mn doped beta-tricalcium phosphate -Ca3(PO4)2
This paper is the first report on the red light emission of manganese (Mn) doped beta-tricalcium phosphate (b-Ca3(PO4)2, TCP) synthesis by co-precipitation method followed by thermal annealing. The annealed Mn doped TCP phosphor showed dominant spheres with a diameter of about 500 nm. The influences of the Mn concentration, annealing temperature, and atmospheres on the photoluminescence intensities of the phosphors were investigated and the results indicate that the annealing temperatures and Mn concentrations are the main factors. The phosphor showed visible emission peaks appeared at about 660 nm and 580 nm results in from the 4T1-6A1 transitions within Mn2+ ion. The Mn-TCP phosphor may serve as a candidate for light-emitting diode application in agriculture lighting. Keywords. Hydroxyapatite; manganese; luminescence; tricalcium phosphate
TextANIMAR: Text-based 3D Animal Fine-Grained Retrieval
3D object retrieval is an important yet challenging task, which has drawn
more and more attention in recent years. While existing approaches have made
strides in addressing this issue, they are often limited to restricted settings
such as image and sketch queries, which are often unfriendly interactions for
common users. In order to overcome these limitations, this paper presents a
novel SHREC challenge track focusing on text-based fine-grained retrieval of 3D
animal models. Unlike previous SHREC challenge tracks, the proposed task is
considerably more challenging, requiring participants to develop innovative
approaches to tackle the problem of text-based retrieval. Despite the increased
difficulty, we believe that this task has the potential to drive useful
applications in practice and facilitate more intuitive interactions with 3D
objects. Five groups participated in our competition, submitting a total of 114
runs. While the results obtained in our competition are satisfactory, we note
that the challenges presented by this task are far from being fully solved. As
such, we provide insights into potential areas for future research and
improvements. We believe that we can help push the boundaries of 3D object
retrieval and facilitate more user-friendly interactions via vision-language
technologies.Comment: arXiv admin note: text overlap with arXiv:2304.0573
Investigation of Sodium Manganese Oxide Nanowires Synthesized by Hydrothermal Method for Alkaline Ion Battery
Sodium Manganese Oxide (NaxMnO2) has attracted much attention as cathode materials for alkaline ion battery due to the ability of fast charge and discharge ion Na+, in particular in nanoscale. We report on the synthesis of NaxMnO2 nanowires via hydrothermal synthesis route from Mn2O3 and NaOH solution. The morphological observation indicates that the obtained Na0.44MnO2 nanowires with diameters of about 20-30 nm, length up to several micrometers were formed by this process. The electrochemical properties of fabricated materials were investigated by means of cyclic voltammetry technique and show that Sodium Manganese Oxide (NaxMnO2) is a promising material in the field of research and fabrication alkaline ion battery
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