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Online since: January 2020
Authors: Chérifa Zekhnine, Nasr Eddine Berrached
Human-Robots Interaction by Facial Expression Recognition
ZEKHNINE Chérifa1,a, BERRACHED Nasr Eddine2
1,2University of Science and Technology of Oran Mohamed Boudiaf, PO Box 1505 El M’naouer
31 000, Oran, Algeria
aelnfi@yahoo.fr
Keywords: Facial Expression Recognition (FER), GVF Snake, MPEG-4 Description, Time Delay Neural Network (TDNN), Mobile and Arm Robot
Abstract.
In the research done by Ju and Kim [2] and Faria et al. [3], numerous systems were proposed to control a robot or a wheelchair using head or face movement.
GVF Snake Kass and al. [15] have introduced the active contours or snakes.
Semi-Automatic Initialization of GVF Snake The initialization procedure of the snake was automated by a geometric shape (ellipsis) that corresponds in its shape to the region of interest (eyes, eyebrow and mouth), in order to solve the problem of choosing the number of initial snake points in the classical algorithm proposed by Kass et al, (see Fig. 1).
In the research done by Ju and Kim [2] and Faria et al. [3], numerous systems were proposed to control a robot or a wheelchair using head or face movement.
GVF Snake Kass and al. [15] have introduced the active contours or snakes.
Semi-Automatic Initialization of GVF Snake The initialization procedure of the snake was automated by a geometric shape (ellipsis) that corresponds in its shape to the region of interest (eyes, eyebrow and mouth), in order to solve the problem of choosing the number of initial snake points in the classical algorithm proposed by Kass et al, (see Fig. 1).
Online since: August 2021
Authors: Nuta Supakata, Weerawan Chalermsakulkit
The chemical composition of WTS is mainly silica (Si), alumina (Al), and calcium (Ca), meaning it can be used in place of fine aggregate in the production of construction materials.
Therefore, using a material containing a large amount of CaO, Si, and Al causes the mortar to swell due to the increase in ettringite crystals and results in the deterioration of the mortar.
Al-Abed: J.
El-Halim and H.E.
Therefore, using a material containing a large amount of CaO, Si, and Al causes the mortar to swell due to the increase in ettringite crystals and results in the deterioration of the mortar.
Al-Abed: J.
El-Halim and H.E.
Online since: February 2026
Authors: Hawraa Abdulelah, Ali Lateef Tarish, Ahmed H. N. Al-Mudhafar
Al-Mudhafar1,c
1Thermal Mechanics Techniques Eng.
[15] Prakash D. et al. (2024) analyze the impact of design elements on quality characteristics using ANOVA.
El Ganaoui, and R.
Yu et al., “Thermal performance evaluation and optimal design of building roof with outer- layer shape-stabilized PCM,” Renew.
Al-Mudhafar, A.
[15] Prakash D. et al. (2024) analyze the impact of design elements on quality characteristics using ANOVA.
El Ganaoui, and R.
Yu et al., “Thermal performance evaluation and optimal design of building roof with outer- layer shape-stabilized PCM,” Renew.
Al-Mudhafar, A.
Online since: January 2010
Authors: Seshadri Seetharaman, H.M. Ahmed, M. Miś, A.H.A. El-Geassy
El-Geassy
2, c and S.
This is in disagreement with that reported earlier by Leclercq et al., [25].
Recently, Giraudon et al,.[26] noticed that the carburization of tungsten occurs only when all oxygen has been practically removed from the initial solid which is in agreement with the present work.
Also, Babutina et al., [34] reported that formation of tungsten carbide with reduction-carburization treatment of WO3 in a methane atmosphere is thermodynamically possible at 773 K.
The reaction sequence can be presented as follows: CH4 (adsorbed) à CHx or C atom formation and deposition à C diffusion and Carbide formation or free carbon deposition, Giraudon et al. [26] observed that the carburization steps were influenced differently by temperature and methane gas content in the gas mixture.
This is in disagreement with that reported earlier by Leclercq et al., [25].
Recently, Giraudon et al,.[26] noticed that the carburization of tungsten occurs only when all oxygen has been practically removed from the initial solid which is in agreement with the present work.
Also, Babutina et al., [34] reported that formation of tungsten carbide with reduction-carburization treatment of WO3 in a methane atmosphere is thermodynamically possible at 773 K.
The reaction sequence can be presented as follows: CH4 (adsorbed) à CHx or C atom formation and deposition à C diffusion and Carbide formation or free carbon deposition, Giraudon et al. [26] observed that the carburization steps were influenced differently by temperature and methane gas content in the gas mixture.
Online since: October 2018
Authors: G. Kumaran, N. Sandeep, Pallava Lakshminarayana, Bala Anki Reddy
Ahmed et al
Haq et al. [23] analyzed the hydromagnetic flow of nanofluid past a sensor sheet.
Sulochana et al. [30] numerically discussed the Carreau fluid flow past a stretching sheet with Brownian motion.
Nadeem et al. [34] investigate the comparative studies of various nanofluid models for stagnation point flow.
Abd El-Aziz, Dual solutions in hydromagnetic stagnation point flow and heat transfer towards a stretching/shrinking sheet with non-uniform heat source/sink and variable surface heat flux, Journal of the Egyptian Mathematical society, 24 (2016), 479-486
Haq et al. [23] analyzed the hydromagnetic flow of nanofluid past a sensor sheet.
Sulochana et al. [30] numerically discussed the Carreau fluid flow past a stretching sheet with Brownian motion.
Nadeem et al. [34] investigate the comparative studies of various nanofluid models for stagnation point flow.
Abd El-Aziz, Dual solutions in hydromagnetic stagnation point flow and heat transfer towards a stretching/shrinking sheet with non-uniform heat source/sink and variable surface heat flux, Journal of the Egyptian Mathematical society, 24 (2016), 479-486
Online since: January 2013
Authors: Yu Lin Hao, Fan Sun, Philippe Vermaut, Richard Portier, Frédéric Prima, Laurence Jordan, Wafa El May, Pascal Laheurte, T. Gloriant
OPTIMIZATION OF SUPERELASTIC PROPERTIES IN TITANIUM-NIOBIUM ALLOYS USING SHORT-TIME THERMAL TREATMENTS
Frédéric Prima1, a, Fan Sun1, b, Wafa El May2,c, Thierry Gloriant3,d,
Pascal Laheurte2,e, Laurence Jordan1, f, Philippe Vermaut1, g,Richard Portier 1, h and Yulin Hao4,i
1 Laboratoire de Physico-Chimie des Surfaces, (CNRS-UMR 7045) Groupe de Métallurgie Structurale, ENSCP Paris, France
2 Laboratoire d’Etude des Textures et Application aux Matériaux LETAM (CNRS-FRE 3143), Université de Metz, France
3 Laboratoire de Science Chimique SCR/CM (CNRS-UMR 6226) Groupe Chimie Métallurgie, INSA Rennes, France.
3 Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
afrederic-prima@chimie-paristech.fr, bsunfan82@gmail.com, cwafa.elmay@univ-metz.fr, dthierry.gloriant@insa-rennes.fr, epascal.laheurte@univ-metz.fr, flaurence.jordan@univ-paris-diderot.fr, gphilippe-vermaut@chimie-paristech.fr, hrichard-portier@chimie-paristech.fr
Ta, Zr, Sn, Al, or O on the mechanical properties of Ti-Nb alloys.
Ta, Zr, Sn, Al, or O on the mechanical properties of Ti-Nb alloys.
Online since: March 2025
Authors: Ivna Kavre Piltaver, Robert Peter, Kresimir Salamon, Ivana Jelovica Badovinac, Ales Omerzu, Karlo Velican, Matejka Podlogar, Daria Jardas, Mladen Petravic
The XPS measurements were performed with a SPECS instrument equipped with a monochromatic x-ray source of 1486.74 eV (Al Kα line) and a hemispherical electron analyzer (Phoibos MCD 100).
Al-Shahry, W.B.
El-Sheshtawy, A.A.
El-Shafi, S.I.
[19] A.L.
Al-Shahry, W.B.
El-Sheshtawy, A.A.
El-Shafi, S.I.
[19] A.L.
Online since: April 2021
Authors: Payal Baitule, R. Manivannan
[39] N.Hassan, S.M.Ali, A.Ebrahim and H.El-Adwy, Performance evaluation and optimization of Camellia sinensis extract as green corrosion inhibitor for mild steel in acidic medium, Materials Research Express. 6(2019)1-15
[41] M.T.Saeed, M.Saleem, A.H.Niyazi, F.A.Al-Shamrani, N.A.Jazzar and M.Ali ,Carrot (Daucus Carota L.)
El Bouari and H.Hannache, Punica granatum leave extract as green corrosion inhibitor for mild steel in Hydrochloric acid ,Web of Conferences. 5(2013)1-3 [45] A.M.Al-Fakih, M.
[54] S.R.Al-Mhyawi,Inhibition of mild steel corrosion using Juniperus plants as green inhibitior,African journal of pure and applied chemistry.8 (2014) 9-22
[41] M.T.Saeed, M.Saleem, A.H.Niyazi, F.A.Al-Shamrani, N.A.Jazzar and M.Ali ,Carrot (Daucus Carota L.)
El Bouari and H.Hannache, Punica granatum leave extract as green corrosion inhibitor for mild steel in Hydrochloric acid ,Web of Conferences. 5(2013)1-3 [45] A.M.Al-Fakih, M.
[54] S.R.Al-Mhyawi,Inhibition of mild steel corrosion using Juniperus plants as green inhibitior,African journal of pure and applied chemistry.8 (2014) 9-22