Publications

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2005
Badr, Y., and M. A. Mahmoud, "On interaction of 193 nm excimer laser with acetone (3s Rydberg state)", Journal of Molecular Structure, vol. 748, no. 1-3, pp. 189-193, 2005. AbstractWebsite
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Badr, Y., and M. A. Mahmoud, "Optimization and photophysics of cadmium selenide nanoparticles", Physica B: Condensed Matter, vol. 369, no. 1-4, pp. 278-286, 2005. AbstractWebsite
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Badr, Y. A., M. A. Kereim, M. A. Yehia, O. O. Fouad, and A. Bahieldin, "Production of fertile transgenic wheat plants by laser micropuncture", Photochemical and Photobiological Sciences, vol. 4, no. 10, pp. 803-807, 2005. AbstractWebsite
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Samsonov, A. V., M. M. Bogina, E. V. Bibikova, A. Y. Petrova, and A. A. Shchipansky, "The relationship between adakitic, calc-alkaline volcanic rocks and TTGs: implications for the tectonic setting of the Karelian greenstone belts, Baltic Shield", Lithos, vol. 79, no. 1–2, pp. 83 - 106, 2005. AbstractWebsite

Two types of coeval acid-intermediate rocks with different petrological, geochemical and isotopic features have been discovered among volcanic rocks and surrounding synkinematic tonalite–trondhjemite–granodiorite (TTG) plutons of Late Archaean greenstone belts in the Karelian granite–greenstone terrane. Type-1 rocks comprise trondhjemites and sub-volcanic, occasionally volcanic dacite–rhyolite rocks. They are characterized by high Sr, low Y and \{HREE\} contents, high Sr/Y ratios, and strongly fractionated \{REE\} patterns with no significant positive or negative Eu anomaly. Initial ɛNd is positive, indicating a generation from juvenile source with little or no contribution of ancient continental crust. Type 2 is represented by diorite–granodiorites and calc-alkaline basalt–andesite–dacite–rhyolite (BADR) series. As compared to type 1, these rocks differ by their lower Sr, higher Y and \{HREE\} contents, lower Sr/Y ratios and less fractionated \{HREE\} patterns with negative Eu anomalies. Initial ɛNd varies from negative to positive values, thus indicating a variable contribution of sialic crust. Geochemistry of the two magmatic series suggests their formation in a convergent plate margin setting. The type-1 rocks resemble Phanerozoic adakites, which represent slab-derived melts contaminated by overlying mantle wedge. The type-2 rocks resemble \{BADR\} series, which were derived from a mantle wedge metasomatized by slab-derived fluids and melts, with subsequent variable crustal contamination. The spatial distribution of these two types of magmatic series defines the asymmetry of the studied granite–greenstone structures, which presumably reflects the primary lateral zoning of island arc formed under specific thermal conditions in the Archaean mantle. Adakite melts upraised to the surface in the frontal part of the island arc, where mantle wedge was thin, showing no or little interaction with metasomatized mantle, and formed adakite-type plutonic and sub-volcanic rocks. At greater depths, adakitic melts and fluids interacted with the overlying mantle wedge and caused its partial melting with generation of calc-alkaline \{BADR\} volcanic rocks and diorite–granodiorite plutons in the rear part of the island arc. Our data suggest that greenstone belt volcano-plutonic arcs were initiated on different types of crust, which presumably determined the petrogenetic and isotope variations of the studied BADR- and adakite-type island-arc complexes.

Badr, Y., and M. A. Mahmoud, "Size-dependent surface-enhanced Raman scattering of sodium benzoate on Silver nanoparticles", Journal of Molecular Structure, vol. 749, no. 1-3, pp. 187-192, 2005. AbstractWebsite
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Ouni, S., M. M. Cohen, and D. W. Massaro, "Training Baldi to be multilingual: A case study for an Arabic Badr", Speech Communication, vol. 45, no. 2, pp. 115 - 137, 2005. AbstractWebsite

In this paper, we describe research to extend the capability of an existing talking head, Baldi, to be multilingual. We use parsimonious client/server architecture to impose autonomy in the functioning of an auditory speech module and a visual speech synthesis module. This scheme enables the implementation and the joint application of text-to-speech synthesis and facial animation in many languages simultaneously. Additional languages can be added to the system by defining a unique phoneme set and unique phoneme definitions for the visible speech for each language. The accuracy of these definitions is tested in perceptual experiments in which human observers identify auditory speech in noise presented alone or paired with the synthetic versus a comparable natural face. We illustrate the development of an Arabic talking head, Badr, and demonstrate how the empirical evaluation enabled the improvement of the visible speech synthesis from one version to another.

2004
Badr, Y. A., I. M. Taher, M. M. Bahgat, and D. F. Ghoneim, "Deep sclerectomy using Erbium: YAG laser in pig's eyes", Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 5, no. 3, pp. 253-261, 2004. Abstract
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Badr, Y., A. S. Elwanees, and M. A. Mahmoud, "The effect of delay time on the CO and CH3 radicals resulting from the photolysis of acetone by 193 nm excimer laser", Journal of Photochemistry and Photobiology A: Chemistry, vol. 165, no. 1-3, pp. 187-191, 2004. AbstractWebsite
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Badr, Y., M. A. Elkhodary, and I. Annan, "Evaluation of some properties of dental ceramic as affected by different types of lasers and gamma radiations", Proceedings of SPIE - The International Society for Optical Engineering, vol. 5313, pp. 72-90, 2004. Abstract
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Badr, Y. A., K. M. Abd El-Kader, and R. M. Khafagy, "Raman spectroscopy study of CdS, PVA composite films", Journal of Applied Polymer Science, vol. 92, no. 3, pp. 1984-1992, 2004. AbstractWebsite
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Badr, Y., and S. HassabElnaby, "Raman, Mid and Nir FTIR absorption spectra of breast cancer reveal a good diagnosis tool", Proceedings of SPIE - The International Society for Optical Engineering, vol. 5325, pp. 78-88, 2004. Abstract
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Badr, Y., S. Abd El-wanees, and M. A. Mahmoud, "The ro-vibrational spectra of CO molecule resulting from the photolysis of acetone", Journal of Photochemistry and Photobiology A: Chemistry, vol. 167, no. 2-3, pp. 159-162, 2004. AbstractWebsite
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Badr, Y., S. Abd El-wanees, and M. A. Mahmoud, "Spectroscopic and dynamic studies of the photolysis reaction of acetone by 193 nm excimer laser", Journal of Photochemistry and Photobiology A: Chemistry, vol. 168, no. 1-2, pp. 31-38, 2004. AbstractWebsite
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2002
Khalil, G. E., G. Abdel Fattah, M. Salali Shafik, and Y. A. Badr, "Comparison of CW laser performance of Nd:YAG and Nd:YLF under laser diode pumping", 3rd Workshop on Photonics and its Application at Egyptian Engineering Faculties and Institutes, pp. 123-140, 2002. Abstract
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Abdel Sattar, A. M., I. M. Azzouz, M. Salah Shafik, and Y. A. Badr, "Effect of synthecizers on the optical properties of Er3+ions in erbium glass lasers", 3rd Workshop on Photonics and its Application at Egyptian Engineering Faculties and Institutes, pp. 76-106, 2002. Abstract
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Solouma, N. H., A. - B. M. Youssef, Y. A. Badr, and Y. M. Kadah, "A new real-time retinal tracking system for image-guided laser treatment", IEEE Transactions on Biomedical Engineering, vol. 49, no. 9, pp. 1059-1067, 2002. AbstractWebsite
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Battisha, I. K., H. H. Afify, and Y. Badr, "Structural and photoluminescence behaviors of nano-structure thin film and bulk silica gel derived glasses", Journal of Sol-Gel Science and Technology, vol. 25, no. 1, pp. 5-15, 2002. AbstractWebsite
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El-Dakrouri, A., J. Yan, M. C. Gupta, M. Laroussi, and Y. Badr, "VUV emission from a novel DBD-based radiation source", Journal of Physics D: Applied Physics, vol. 35, no. 21, pp. L109-L114, 2002. AbstractWebsite
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2001
Elmahdy, A. M., A. M. Azzam, Y. A. Badr, M. F. Hassan, and M. S. Aly, "Laser beam scattering from metallic sphere embedded in aerosol cloud", National Radio Science Conference, NRSC, Proceedings, vol. 2, pp. 599-607, 2001. Abstract
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Solouma, N. H., A. - B. M. Youssef, Y. A. Badr, and Y. M. Kadah, "Real-time retinal tracking for laser treatment planning and administration", Proceedings of SPIE - The International Society for Optical Engineering, vol. 4322, no. 3, pp. 1311-1321, 2001. Abstract
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Solouma, N. H., A. - B. M. Youssef, Y. A. Badr, and Y. M. Kadah, "Robust computer-assisted laser treatment using real-time retinal tracking", Annual Reports of the Research Reactor Institute, Kyoto University, vol. 3, pp. 2499-2502, 2001. Abstract
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2000
Badr, Y., Z. I. Ali, A. H. Zahran, and R. M. Khafagy, "Characterization of gamma irradiated polyethylene films by DSC and X-ray diffraction techniques", Polymer International, vol. 49, no. 12, pp. 1555-1560, 2000. AbstractWebsite
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Badr, Y. A., M. S. Aly, M. F. Hassan, A. M. Elmahdy, and A. M. Azzam, "Far field scattering of Gaussian beam by an infinitely long conducting circular cylinder", 2nd Workshop on Teaching Photonics at Egyptian Engineering Faculties and Institutes, pp. 68-83, 2000. Abstract
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Azzam, A. M., A. M. Elmahdy, Y. A. Badr, M. S. Aly, and M. F. Hassan, "Laser beam scattering on metallic sphere immersed in a medium of aerosols", 2nd Workshop on Teaching Photonics at Egyptian Engineering Faculties and Institutes, pp. 84-103, 2000. Abstract
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Badr, Y., Z. I. Ali, and R. M. Khafagy, "On the mechanism of low temperature glass transition in low density polyethylene films", Radiation Physics and Chemistry, vol. 58, no. 1, pp. 87-100, 2000. AbstractWebsite
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