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| 1 | Wood particle/high- density polyethylene composites: Thermal sensitivity and nucleating ability of wood particles 显示文摘 | Bouafif H Koubaa A Perre P | 2009 | J Appl Polym Sci2009，113，1： | 1 |
| 2 | Effects of fi- ber characteristics on the physical and mechanical properties of wood plastic composites 显示文摘 | BOUAFIF H KOUBAA A PERREP | 2009 | Composites Part A2009，40，12： | 1 |
| 3 | The State of Hepatitis B and C in the Mediterranean and Balkan Countries: Report from a Summit Conference显示文摘 | A. Hatzakis P. Damme K. Alcorn C. Gore M. Benazzouz S. Berkane M. Buti M. Carballo H. Cortes Martins S. Deuffic‐Burban A. Dominguez M. Donoghoe A‐N. Elzouki N. Ben‐Alaya Bouafif G. Esmat R. Esteban M. Fabri K. Fenton D. Goldberg I. Goulis T. Hadjichristod | 2013 | J Viral Hepat2013，，： | 1 |
| 4 | Implementation of a Biometric Interface in Voice Controlled Wheelchairs显示文摘In order to assist physically handicapped persons in their movements,we developed an embedded isolated word speech recognition system(ASR)applied to voice control of smart wheelchairs.However,in spite of the existence in the industrial market of several kinds of electric wheelchairs,the problem remains the need to manually control this device by hand via joystick;which limits their use especially by people with severe disabilities.Thus,a significant number of disabled people cannot use a standard electric wheelchair or drive it with difficulty.The proposed solution is to use the voice to control and drive the wheelchair instead of classical joysticks.The intelligent chair is equipped with an obstacle detection system consisting of ultrasonic sensors,a moving navigation algorithm and a speech acquisition and recognition module for voice control embedded in a DSP card.The ASR architecture consists of two main modules.The first one is the speech parameterization module(features extraction)and the second module is the classifier which identifies the speech and generates the control word to motors power unit.The training and recognition phases are based on Hidden Markov Models(HMM),K-means,Baum-Welch and Viterbi algorithms.The database consists of 39 isolated speaker words(13 words pronounced 3 times under different environments and conditions).The simulations are tested under Matlab environment and the real-time implementation is performed by C language with code composer studio embedded in a TMS 320 C6416 DSP kit.The results and experiments obtained gave promising recognition ratio and accuracy around 99%in clean environment.However,the system accuracy decreases considerably in noisy environments,especially for SNR values below 5 dB(in street:78%,in factory:52%). | Lamia Bouafif Noureddine Ellouze | 2020 | Sound & Vibration2020，54，1： | 1 |
| 5 | Naturally Nitrogen-Doped Biochar Made from End-of-Life Wood Panels for SO_(2) Gas Depollution显示文摘Reconstituted wood panels have several advantages in terms of ease of manufacturing,but their shorter life span results in a huge amount of reconstituted wood panels being discarded in sorting centers yearly.Currently,the most common approach for dealing with this waste is incineration.In this study,reconstituted wood panels were converted into activated biochar through a two-step thermochemical process:(i)biochar production using pilot scale fast pyrolysis at 250 kg/h and 450℃;and(ii)a physical activation at three temperatures(750℃,850℃ and 950℃)using an in-house activation furnace(1 kg/h).Results showed that the first stage removed about 66% of the nitrogen from the wood panels in the form of NO,NH3,and trimethylamine,which were detected in small amounts compared to emitted CO_(2).Compared to other types of thermochemical conversion methods(e.g.,slow pyrolysis),isocyanic acid and hydrogen cyanide were not detected in this study.The second stage produced activated biochar with a specific surface area of up to 865 m^(2)/g at 950℃.The volatile gases generated during activation were predominantly composed of toluene and benzene.This two-step process resulted in nitrogen-rich carbon in the form of pyrrolic and pyridinic nitrogen.Activated biochars were then evaluated for their SO_(2) retention performance and showed an excellent adsorption capacity of up to 2140 mg/g compared to 65 mg/g for a commercial activated carbon(889 m^(2)/g).End-of-life reconstituted wood panels and SO_(2) gas are problematic issues in Canada where the economy largely revolves around forestry and mining industries. | Hamdi Hachicha Mamadou Dia Hassine Bouafif Ahmed Koubaa Mohamed Khlif Flavia Lega Braghiroli | 2023 | Journal of Renewable Materials2023，11，11： | 0 |
| 6 | Speech-Music-Noise Discrimination in Sound Indexing of Multimedia Documents显示文摘Sound indexing and segmentation of digital documentsespecially in the internet and digital libraries are very useful tosimplify and to accelerate the multimedia document retrieval. Wecan imagine that we can extract multimedia files not only bykeywords but also by speech semantic contents. The maindifficulty of this operation is the parameterization and modellingof the sound track and the discrimination of the speech, musicand noise segments. In this paper, we will present aSpeech/Music/Noise indexing interface designed for audiodiscrimination in multimedia documents. The program uses astatistical method based on ANN and HMM classifiers. After preemphasisand segmentation, the audio segments are analysed bythe cepstral acoustic analysis method. The developed system wasevaluated on a database constituted of music songs with Arabicspeech segments under several noisy environments. | Lamia Bouafif Noureddine Ellouze | 2018 | Sound & Vibration2018，52，6： | 0 |
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