Letteratura scientifica selezionata sul tema "Jpww"
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Articoli di riviste sul tema "Jpww"
Temple, Derry, Romain Denis, Marianne C. Walsh, Patrick Dicker e Annette T. Byrne. "Comparison of anthropometric-based equations for estimation of body fat percentage in a normal-weight and overweight female cohort: validation via air-displacement plethysmography". Public Health Nutrition 18, n. 3 (16 aprile 2014): 446–52. http://dx.doi.org/10.1017/s1368980014000597.
Testo completoAvery, Todd. "Nanoscience and Literature: Bridging the Two Cultures". NEW SOLUTIONS: A Journal of Environmental and Occupational Health Policy 15, n. 4 (febbraio 2006): 289–307. http://dx.doi.org/10.2190/9j5l-7dbx-cydl-jpww.
Testo completoSohtsinda, Hermann, Clency Perrine, Smail Bachir, Claude Duvanaud e Christian Chatellier. "Amplifier-Aware Content-Based Precoder Design for Hierarchical Image Transmission over a Realistic MIMO-OFDM Channel". Journal of Circuits, Systems and Computers 28, n. 12 (novembre 2019): 1950209. http://dx.doi.org/10.1142/s0218126619502098.
Testo completoCarlson, Mark, Sajjad K. Moghadam, Daniel D. Harabor, Peter J. Stuckey e Morteza Ebrahimi. "Optimal Pathfinding on Weighted Grid Maps". Proceedings of the AAAI Conference on Artificial Intelligence 37, n. 10 (26 giugno 2023): 12373–80. http://dx.doi.org/10.1609/aaai.v37i10.26458.
Testo completoAllen, James P. "The Pyramid Texts of Queens Jpwt and Wḏbt-n.(j)". Journal of the American Research Center in Egypt 23 (1986): 1. http://dx.doi.org/10.2307/40001088.
Testo completoLihong Cui e Wenguo Li. "Adaptive Multiwavelet-Based Watermarking Through JPW Masking". IEEE Transactions on Image Processing 20, n. 4 (aprile 2011): 1047–60. http://dx.doi.org/10.1109/tip.2010.2079551.
Testo completoDeng, Wenxue, Tianhong Yang, Honglei Liu, Feiyue Liu e HongLiang Xu. "Applicability of Anisotropic Failure Criteria and Associated Application with Layered Rocks". Advances in Civil Engineering 2021 (23 gennaio 2021): 1–21. http://dx.doi.org/10.1155/2021/6688946.
Testo completoEllett, Alberta J., e Rowena G. Wilson. "The Road to Excellence for JPCW: A Note to Subscribers and Contributors". Journal of Public Child Welfare 3, n. 2 (27 maggio 2009): 111–13. http://dx.doi.org/10.1080/15548730902914216.
Testo completoLowe, Adam, Romeo F. Esquivel e John T. Cunningham. "Pancreatic Duct (PD) Stenting with the Johlin Wedge Stent (JPWS) in Pancreatic Disease". American Journal of Gastroenterology 100 (settembre 2005): S89—S90. http://dx.doi.org/10.14309/00000434-200509001-00202.
Testo completoLowe, Adam, Brian Applebaum, Romeo Esquivel e John Cunningham. "Pancreatic Duct (PD) Stenting with the Johlin Wedge Stent (JPWS) in Pancreatic Disease". American Journal of Gastroenterology 101 (settembre 2006): S118. http://dx.doi.org/10.14309/00000434-200609001-00228.
Testo completoTesi sul tema "Jpww"
Koussa, Badreddin. "Optimisation des performances d'un système de transmission multimédia sans fil basé sur la réduction du PAPR dans des configurations réalistes". Thesis, Poitiers, 2014. http://www.theses.fr/2014POIT2260/document.
Testo completoIn this thesis, we are interested on the performances optimization of multimedia transmissions systems with an original contribution combining RF circuits' imperfections presented by the power amplifier (PA) nonlinearities and the transmission channel distortions. The studied system uses the OFDM technique which is the most widespread multicarrier modulation in recent radio communications systems. However, its major drawback is the high PAPR value, which degrades the transmission quality due to the PA nonlinearities. To reduce the PAPR, we first propose to improve the TR method in terms of convergence speed and PAPR reduction, by studying several optimization algorithms. We show that the conjugate gradient algorithm provides the best performance while respecting the frequency specifica-tions of the IEEE 802.11a standard. Thereafter, TR method has been evaluated experimentally in the presence of a commercial PA (SZP-2026Z) and using a measurement bench. It is shown that the TR method improves the quality of service (QoS), with 18% reduction in PA power consumption. The experimental study has resulted to choosing a realistic PA model consider-ing memory effects. This PA model has been integrated into a SISO simulation chain includ-ing also a realistic channel model. This chain is used to evaluate the TR method performances under realistic transmission conditions. Finally, we propose to apply the TR method in a closed-loop MIMO-OFDM chain dedicated to the transmission of scalable multimedia con-tent in a realistic context with the IEEE 802.1n standard. This study presents a new contribu-tion of the TR method evaluation to improve the visual quality of the JPWL transmitted imag-es, considering in the same time the multimedia content, the PA nonlinearity and the channel transmission distortions
Sohtsinda, Hermann. "Approche conjointe canal et amplificateur d'émission pour l'allocation dynamique de puissance dans les systèmes MIMO-OFDM". Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2260/document.
Testo completoThis thesis focuses on the optimization of multimedia transmissions in MIMO-OFDM systems by jointly taking into account the power amplifier non-linearity and the wireless channel distortions. The OFDM modulation generates a high peak fluctuation, measured by the PAPR, which is affected by the RF non-linearity such as the power amplifier, reducing the transmission quality. We first propose a new method to improve the Tone Reservation method performances in terms of PAPR reduction gain and convergence speed, by including the samples of the Guard Interval Signal in the optimization algorithm. Simulations results using a power amplifier model with memory effects and a radio channel based on a realistic propagation model show that the new method offers the better performances, while respecting the IEEE 802.11a spectrum mask. Secondly, we propose to study the impact of power amplifier nonlinearity on the transmission of scalable image contents over a precoded Closed-Loop MIMO-OFDM system. The simulations in a realistic context, under the standard IEEE 802.11n standard show that the RF non-linearity affects the robustness against transmission errors and highly degrades the visual quality of the received JPWL images. Finally, we propose a new precoding strategy which jointly takes into account the power amplifier, the radio channel and the image content to be transmitted. This strategy successively allocates power between the SISO sub-channels obtained from the MIMO channel decomposition in order to maximize the visual quality of the received images, while reducing the total output power. Simulations with a realistic power amplifier model, associated with a realistic channel model show that this new strategy ensures a robust transmission and improves the visual quality of the received images
Mhamdi, Maroua. "Méthodes de transmission d'images optimisées utilisant des techniques de communication numériques avancées pour les systèmes multi-antennes". Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2281/document.
Testo completoThis work is devoted to improve the coding/ decoding performance of a transmission scheme over noisy and realistic channels. For this purpose, we propose the development of optimized image transmission methods by focusing on both application and physical layers of wireless networks. In order to ensure a better quality of services, efficient compression algorithms (JPEG2000 and JPWL) are used in terms of the application layer enabling the receiver to reconstruct the images with maximum fidelity. Furthermore, to insure a transmission on wireless channels with a minimum BER at reception, some transmission, coding and advanced modulation techniques are used in the physical layer (MIMO-OFDM system, adaptive modulation, FEC, etc). First, we propose a robust transmission system of JPWL encoded images integrating a joint source-channel decoding scheme based on soft input decoding techniques. Next, the optimization of an image transmission scheme on a realistic MIMO-OFDM channel is considered. The optimized image transmission strategy is based on soft input decoding techniques and a link adaptation approach. The proposed transmission scheme offers the possibility of jointly implementing, UEP, UPA, adaptive modulation, adaptive source coding and joint decoding strategies, in order to improve the image visual quality at the reception. Then, we propose a robust transmission system for embedded bit streams based on concatenated block coding mechanism offering an unequal error protection strategy. Thus, the novelty of this study consists in proposing efficient solutions for the global optimization of wireless communication system to improve transmission quality
Libri sul tema "Jpww"
Baumann, Max-Otto. Chapter 11 Funding the UN: Support or Constraint? Taylor & Francis, 2020.
Cerca il testo completoCapitoli di libri sul tema "Jpww"
Xie, Xinwen, Philippe Carré, Clency Perrine, Yannis Pousset, Jianhua Wu e Nanrun Zhou. "A Global Decoding Strategy with a Reduced-Reference Metric Designed for the Wireless Transmission of JPWL". In Advanced Concepts for Intelligent Vision Systems, 496–505. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01449-0_42.
Testo completoPaschotta, R. "fiber amplifiers". In RP Photonics Encyclopedia. RP Photonics AG, 2004. http://dx.doi.org/10.61835/jpw.
Testo completoAtti di convegni sul tema "Jpww"
Dufaux, Frederic, e Didier Nicholson. "JPWL: JPEG 2000 for wireless applications". In Optical Science and Technology, the SPIE 49th Annual Meeting, a cura di Andrew G. Tescher. SPIE, 2004. http://dx.doi.org/10.1117/12.564836.
Testo completoRhayma, Hanen, Achraf Makhloufi e Ahmed ben Hmida. "Robust watermarking scheme integrated into JPWL based on Turbo-Trellis-Coded quantization". In 2018 4th International Conference on Advanced Technologies for Signal and Image Processing (ATSIP). IEEE, 2018. http://dx.doi.org/10.1109/atsip.2018.8364456.
Testo completoXiang, Wei, Andrew Clemence, John Leis e Yafeng Wang. "Error resilience analysis of wireless image transmission using JPEG, JPEG 2000 and JPWL". In Signal Processing (ICICS). IEEE, 2009. http://dx.doi.org/10.1109/icics.2009.5397742.
Testo completoFiorucci, Federico, Giuseppe Baruffa, Paolo Micanti e Fabrizio Frescura. "A real-time, DSP-based JPWL implementation for wireless High Definition video transmission". In 2011 IEEE International Conference on Multimedia and Expo (ICME). IEEE, 2011. http://dx.doi.org/10.1109/icme.2011.6012054.
Testo completoAbot, J., M. Nauge, C. Perrine, C. Larabi, C. Bergeron, Y. Pousset e C. Olivier. "A robust content-based JPWL transmission over a realistic MIMO channel under perceptual constraints". In 2011 18th IEEE International Conference on Image Processing (ICIP 2011). IEEE, 2011. http://dx.doi.org/10.1109/icip.2011.6116360.
Testo completoAlajel, Khalid Mohamed, Wei Xiang e John Leis. "Error resilience performance evaluation of H.264 I-frame and JPWL for wireless image transmission". In 2010 4th International Conference on Signal Processing and Communication Systems (ICSPCS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icspcs.2010.5709766.
Testo completo