Trường Đại học Bách khoa - Đại học Quốc gia Thành phố Hồ Chí Minh
Công bố khoa học tiêu biểu
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On the performance of cooperative cognitive networks with selection combining and proactive relay selection
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 18 Số 3 - Trang 29-38 - 2015
This paper proposes an outage analysis framework for cooperative cognitive
networks with proactive relay selection and selection combining (SC) under
licensed outage constraint, maximum transmit power constraint, independent
non-identical (i.n.i) fading distributions, erroneous channel information, and
licensed users’ interference. Towards this end, we firstly suggest power
allocation for unlicens...
Depth estimation of the absorbing structure in a slab turbid medium using point spread function
Tạp chí Kỹ thuật và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 3 Số SI3 - Trang SI10-SI21 - 2020
Nowadays, transillumination imaging is more popular used in the medical field
with the development of the vein finder and the non-invasive diagnosis
applications. Near-infrared light with a wavelength of 700 - 1200 nm has
relatively high transmission through biological tissue. Using near-infrared
light, we can able to obtain a two dimensional (2D) transillumination image of
the internal absorption...
#transillumination imaging #scattering suppression #convolution #Point spread function (PSF) #depth estimation
STUDY ON THE AERODYNAMIC DRYING TECHNOLOGY WIT PARTICLE CLASSIFICATION FOR PASTE MATERIALS
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 11 Số 11 - Trang 49-56 - 2021
Nowadays, we often meet the problem of paste materials drying in the industries
of chemistry, pharmacy, agricultural product processing, Differentiating normal
particles, paste materials are often agglutinate and difficult to be dried.
Besides, agglutinated material mass after drying, in many cases, need further
crushing and classification, which makes the process high cost. The integration
of aer...
HEATS OF FORMATION OF COMPOUNDS: QUANTUM CALCULATIONS INSTEAD OF EXPERIMENTAL METHODS
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 2 Số 4&5 - Trang 84-89 - 2021
Using ab initio molecular orbital theory or Density Functional Theory to
calculate standard-heats of formation of compounds instead of experimental
methods which are expensive, needing high educational experts on spectro-scopic
methods and in several cases are not been able to measure. Calculations can also
be used to predict heats of formation for compounds for which these quantities
are not expe...
Measurement-based electrical parameters of power transformers for Frequency Response Analysis interpretation-Part II: Winding Part II: Winding analysis
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 20 Số K3 - Trang 11-17 - 2017
For a practical Frequency Response Analysis (FRA) interpretation applicable to
power transformers, frequency dependent electrical parameters of the core and
windings in broad frequency range should be identified through non-destructive
measurements. Since the core parameters are determined in Part I, electrical
parameters of windings (resistances, capacitances) and leakage paths surrounding
windin...
Effects of aromatic on soot characteristics of aviation fuel surrogates in diffusion flames
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 18 Số 4 - Trang 55-64 - 2015
Co-annular smoke-free laminar diffusion wick-fed flames of dodecane and its
blended with various amounts of propylbenzene of 10, 20, 25 vol.% have been used
to study soot formation characteristics. Dodecane and propylbenzene are selected
as the surrogates for paraffin class and aromatic class of aviation fuel. A
light extinction method is adopted to determine the total soot volume (TSV) as a
funct...
CONTROL TELE-MANIPULATOR
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 13 Số 4 - Trang 5-19 - 2020
All most interactive problems between humans and the environment such as
dangerous, toxic, infectious or sterile in the world can be solved by robot
technology. In particular, one of feasible and stability solution is
Tele-Manipulator Technology. By using the master arm to record the movements and
behavior of the driver in a safe environment, then transmits these parameters
over a LAN to the slave...
ON THE INVESTIGATION OF UPSCALING METHODS WITH THE PURPOSE OF RETAINING THE GEOLOGICAL HETEROGENEITY IN THE SIMULATION MODEL FOR TE GIAC TRANG FIELD
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 14 Số 2 - Trang 25-37 - 2020
Geological model is normally built with huge number of grid cells (106 – 107
cells) in order to model in details the geological heterogeneity of an oil
field. Although increasingly developed nowadays, modern computers would be faced
with substantial problems size in reservoir simulation. Upscaling the geological
model before running numerical simulation, therefore, is greatly important to
reduce t...
FOREIGN EXCHANGE MANAGEMENT
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 4 Số 5&6 - Trang 47-51 - 2021
How to manage effectively the foreign exchange is very crucial issue in order to
promote or encourage all foreign activities such as: international trade and
invesment. This paper analyses the current foreign exchange management in VN and
then recommend some criteria which is considered as guideline for banking
administrator as following: Ensuiring legal environment for foreign exchange
activities...
A COMPUTER ALGORITHM FOR ESTABLISHING THE SURFACE COORDINATE PARAMETRIC EQUATION AND GEOMETRIC MODEL OF THE COMPLEX SURFACE OBJECTS
Tạp chí Phát triển Khoa học và Công nghệ Đại học Quốc gia Thành phố Hồ Chí Minh - Tập 3 Số 5&6 - Trang 107-114 - 2021
An algorithm is developed successfully in this paper to present the method for
establishing the coordinate parametric equation of all points on the complex
surface and automatically creating the 3 D geometric model of the objects. This
model will be a base in surface analysis, tool selection, kinetics parameter
calculation of tool, optimal toolpath algorithm building and this basic model
will be u...
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