Tạp chí khoa học và công nghệ
2354-0575
Việt Nam
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Các bài báo tiêu biểu
VIETNAMESE DIALECT IDENTIFICATION ON EMBEDDED SYSTEM
Tập 24 - Trang 82-87 - 2020
Many factors affect speech recognition including dialect factors. Vietnamese is
a tone language with many different dialects. Therefore, spoken Vietnamese
identification is also significantly influenced by dialect. If the information
about dialects is known during the speech recognition process, the performance
of recognition systems will be better because the corpus of these systems is
normally o...
#Vietnamese dialects identification #embedded systems #GMM #MFCC #F0 #VDSPEC
Influence of composition, doping concentration and annealing temperatures on optical properties of Eu3+-doped ZnO-SiO2 nanocomposites
Tập 9 - Trang 69-72 - 2016
We have stupied structure and optical properties of ZnO - SiO2 nanocomposites
doped with Eu3+ ions with varied concentrations of ZnO and the annealing
temperatures. The thin films containing ZnO - SiO2 nanocomposites doped Eu3+
ions were preparedby sol – gel method and spin-coating process. The stuctures
and morphologies of the thin films are studied by X- ray diffraction ( XDR) and
scanning elect...
#ZnO-SiO2 nanocomposite #Eu3 ions #photoluminescence #energy transfer #thermal quenching.
IMPLEMENTATION OF BLACK HOLE ATTACK ON AODV ROUTING PROTOCOLS IN MANET USING NS2
Tập 25 - Trang 45-51 - 2020
One of the major challenges of Mobile Ad hoc Network (MANETs) is how to
implement and avoid of different kind of security attack such as Denial of
service (DoS), wormhole, replay, masquerade, black hole etc. MANETs use routing
protocol to communicate the data packet from one node to another and each node
acts as a host or router, which can choose suitable paths for transmission of
packet. AODV is ...
#Security threats #Routing Protocols #AODV #MANET #Black hole attack #Network Simulator
RESEARCH ON EXAMINING THE REQUIREMENTS FOR SHOES FOR FEMALE DIABETIC IN VIETNAM NGHIÊN CỨU KHẢO SÁT YÊU CẦU
Tập 11 - Trang 96-101 - 2016
This article presents the studying results of surveying 301 female diabetics
about the request of their shoes into: shoe type, shoe kind and shape, the
dimension and shapes of shoe’s details, the bottoming assembly method, the
materials and the comfort of the shoes. The study results show that: popular
shoes for female diabetics are open shoes, low-necked with Velcro, low heel from
20mm to 25mm, h...
#Diabetics #diabetics shoe #diabetics female shoe
SỬ DỤNG BERT CHO TÓM TẮT TRÍCH RÚT VĂN BẢN
Tập 26 - Trang 74-79 - 2020
Bài báo này giới thiệu một phương pháp tóm tắt trích rút các văn bản sử dụng
BERT. Để làm điều này, các tác giả biểu diễn bài toán tóm tắt trích rút dưới
dạng phân lớp nhị phân mức câu. Các câu sẽ được biểu diễn dưới dạng vector đặc
trưng sử dụng BERT, sau đó được phân lớp để chọn ra những câu quan trọng làm bản
tóm tắt. Chúng tôi thử nghiệm phương pháp trên 3 tập dữ liệu với 2 ngôn ngữ
(Tiếng Anh...
#Tóm tắt văn bản #xử lý ngôn ngữ #học máy #học sâu #học không giám sát
THE USE OF EXPERIENTIAL LEARNING IN TEACHING PHYSICS
Tập 12 - Trang 143-149 - 2017
This article make scientific arguments asserted: experiential learning is the
solution to innovate teaching physics for learner amid Vietnam education reform
today. In the article, we focus on analyzing methods of physical science,
proposed model of physical learning based on experience. Given the organization
of teaching physics. Pedagogic practice to assess the impact of teaching physics
based o...
#Physics #Methods of physical science #Experiential Learning
OPTIMIZINGON SURFACE ROUGHNESS AND MATERIALS RATE FOR MILLING SKD61 HARDENING STEEL WITH TAGUCHI METHODS AND RESPONSE SURFACE METHODOLOGY
Tập 15 - Trang 22-26 - 2017
The paper presents optimization of process parameters on surface roughness (Ra)
and material removal rate (MRR) during hardening of SKD61 steel milling using
Taguchi method combined with surface response (RSM). The experiment was designed
by Taguchi method, the Ra surface was measured by Mitutoyo Surftest SJ-400
machine and then analyzed by ANOVA to determine the influence of the input
parameters ...
#Surface roughness; SKD61; Taguchi; RSM; optimization.
REFLECTIONS ON USING SOME COMMUNICATIVE ACTIVITIES IN TEACHING ENGLISH GRAMMAR
Tập 13 - Trang 79-82 - 2017
Grammar is undoubtedly part of a language. Therefore, teaching and learning
English grammaris indispensable to teaching and learning English. Poor English
grammar will definitely make learners fail to communicate effectively in
English. However, English grammar will only help if it is communicatively
taught. That is to say, teachers should introduce English grammar in contexts
and create practice ...
#English grammar #communicative activities #communication tasks #Information-gap activities #Jigsaw activities #Board games.
SIMULATION AND EVALUATION ABOUT MAC PROTOCOLS IN WIRELESS SENSOR NETWORK USING NS2
Tập 23 - Trang 39-45 - 2019
One of the major challenges of wireless sensor networks (WSN) is how to utilize
efficiently battery energy resource to extend the lifetime of the entire network
because of power constrained devices. Many MAC (Medium Access Control) protocols
have been taken to decrease the energy consumption of sensor nodes such as IEEE
802.11, 802.15.4 MAC or sensor MAC (S-MAC) protocols. In this paper, we provid...
#Wireless Sensor Networks #energy-efficient #S-MAC #IEEE 802.15.4 #IEEE 802.11
EFFECTS OF INDENTER RADIUS ON MECHANICAL PROPERTIES AND DEFORMATION BEHAVIOR OF Cu50Zr50 METALLIC GLASSES IN INDENTATION AND SCRATCHING PROCESS
Tập 23 - Trang 7-12 - 2019
In this paper, a combination between the indentation and scratching process was
developed to analyze the deformation mechanisms and mechanical properties of
Cu50Zr50 metallic glasses (MGs) using molecular dynamics (MD) simulation. The
deformation mechanisms and mechanical properties of Cu50Zr50 MGs are appraised
through the surface morphology, pile-up height, hardness, machining forces, and
resist...
#Cu50Zr50 MGs #indentation #scratching #resistance coefficient