210 research outputs found
Other Media - Digital Video files - Proper Role of Religion in a Free Society, Round table discussion, 2011
No full textEpisode of 'The Global Freedom Report,' a radio program hosted by Brent Johnson. A round table discussion about the proper role of religion in a free society with panelists Constance Cumbey, Biblical Scholar, Dr. Imad-ad-Dean Ahmad, Imam and author, and Tanya Smith, Atheist Alliance International. Video features still images related to the program.http://deepblue.lib.umich.edu/bitstream/2027.42/107680/1/ProperRoleOfReligion.zip-
The Opinions of Imad Al-Kashi in the Science of Meanings
No full textThis research deals with an important topic about Imad al-Din al-Kashi, which is his views on the science of semantics when responding to the objections of al-Khatib al-Qazwini, in his book called (The Answers of al-Kashi to the objections of the author of the clarification on al-Sakaki fi Miftah al-Ulum). Including three models to be studied
The opinions of Imad Al-Kashi in the science of meanings
No full textThis research deals with an important topic about Imad al-Din al-Kashi, which is his views on the science of semantics when responding to the objections of al-Khatib al-Qazwini, in his book called (The Answers of al-Kashi to the objections of the author of the clarification on al-Sakaki fi Miftah al-Ulum). Including three models to be studied
Ahmed B. İmad El-Hanefi El-Ayıntabi’nin El-Hamdiyye adlı eserinin tahkiki
No full textvi, 127 sayfa : 29 cm 1 CDÖZETBu çalışma Ya'kûb b. Seyyid Alî el-Bursevî'nin (ö.931/1524) nahve dâir ŞerhuDîbâceti'l Misbâh adlı eserinin üzerine, Osmanlı ulemâsından Ahmed b. İmâd el-Hanefî el-Âyıntâbî tarafından yazılan el-Hamdiyye adlı şerhin tahkikidir.Müellif/Muhaşşî Ahmed b. İmâd el-Hanefî el-Ayıntâbî'nin taşrada yaşamasındanolsa gerek kiyapmış olduğumuz taramalarımızda hayatı hakkında herhangi bir bilgiyeulaşamadık. Bununla beraber taradığımız eserlerin listesini araştırmanın yöntemi başlığı altında zikretmiş bulunmaktayız. Müellifimiz hakkında bir bilgiye ulaşamadığımızdan tezimizin Türkçe bölümünde müellif için ayrıca bir başlık açmayı oluşturamadık.ABSTRACTThis study is the vertification of named el-Hamdiyye commentary work based on Ya'kûb b. Seyyid Alî el-Bursevî's (ö.931/1524) work named Şerhu Dîbâceti'l Misbâh. This vertification has been written by Ahmed b. İmâd el-Hanefî el-Âyıntâbî who is one of the Ottoman scholars.The subject of my thesis is about the verification of Hasiye, known as Hamdiyyewritten by Ahmed b. Imad el-Hanei el-Ayintabi, which explains Şerhu Dibaceti'l Misbah that was written by Yakup b. Seyyid elbursevi on el-Misbah which is belong to Mutarrize.We could not reach any information about him in our search, it is likely becauseof Author Ahmed b. Imad el-Hanefi being in rural area. However, we indicated the lists of books that we searched under the method of research. Since we could not access any information about our author, we did not consider opening any title for the author in Turkish section of our thesis
Islamization of Knowledge: A Methodology
No full textIslamization of Knowledge: A Methodology
By Imad al Din Khalil, Herndon, VA & London, UK: IIt, 1991, 28 pp., Occasional papers Series.
This well-Written book comprehensively outlines the basic precepts on which on concept and a program of Islamization of knowledge must, according to the author, rest. In his attempt to outline these directions, the author first defines the concept of Islamization as ... practing (i.e., discovering, compiling, piecing together, communicating and publishing) intellectual activity based on the Islamic concept of the universe” (p. 5). He further states that “Islamization‟ covers everthing within the realm of the true belief in the existence of Allah SWT” (p. 5). This definition is enhanced by Khalil‟ unequivocal reference to the Shariah and fiqh, the derivative of the Quran and the Sunnah, as being the principal background for the Islamization process. Another important aspect of Islamization
Study of the health effects and coils optimization of a wireless power transfer system designed for electric scooters
No full textLa transmission d'énergie sans fil est en plein essor depuis quelques années. Charger les véhicules électriques sans câbles encombrants est devenu une nécessité. De nombreux chercheurs et industriels s'engagent dans le développement de cette technologie, notamment pour les fortes puissances comme les voitures électriques. De plus, le secteur de la micromobilité électrique est en pleine expansion et nécessite également une infrastructure de recharge fiable.Dans cette thèse, nous nous intéressons au problème du transfert de puissance pour un véhicule de micromobilité, qui est un scooter électrique.Tout d'abord, un prototype de laboratoire de transfert de puissance sans fil a été conçu et mis en œuvre sur la base de ce chapitre.Ensuite, un modèle du transfert d'énergie sans fil construit a été conçu sous COMSOL Multi-physics pour étudier les effets du champ magnétique sur deux parties du corps d'une personne qui pourrait être exposée à ce champ, à savoir la tête et les mains. La densité du flux magnétique, le champ électrique induit, le débit d'absorption spécifique et l'augmentation de la température des tissus biologiques qui en résulte sont modélisés et comparés aux limites et aux directives prescrites dans la réglementation établie pour limiter l'exposition des personnes aux champs électromagnétiques. Les résultats obtenus sont inférieurs aux directives et aux limites d'exposition aux champs électromagnétiques spécifiées par les organisations internationales.De plus, nous avons illustré sous COMSOL la cartographie du champ magnétique généré par les bobines forfaitaires du prototype. Nous avons effectué une modélisation pour les optimiser en fonction de la taille du châssis du scooter. Ensuite, nous avons utilisé le coefficient de couplage et la méthode des facteurs de qualité pour trouver la meilleure forme de bobine pour une topologie de compensation série-série. Comme résultats, une forme circulaire avec un diamètre de 9,6 cm pour les bobines de transmission et de réception a la meilleure performance.Nous avons bouclé cette thèse en étudiant l'impact du blindage sur notre système de transfert d'énergie sans fil. Nous avons effectué une modélisation sous Comsol pour évaluer l'efficacité du blindage d'une plaque d'aluminium et l'augmentation de sa température lorsqu'elle est placée dans une zone de champ magnétique alternatif. Les résultats montrent une augmentation significative de la température de la plaque d'aluminium, ce qui doit être pris en compte lors du blindage du système.Wireless power transmission has been booming in recent years. Charging electric vehicles without bulky cables has become a necessity. Many researchers and industrials are engaging in developing this technology, especially for high powers like electric cars. Furthermore, the electric micromobility sector is increasing and needs reliable recharging infrastructure as well.In this thesis, we are interested in the power transfer problem for a micromobility vehicle, which is an electric scooter.First, a wireless power transfer laboratory prototype was designed implemented based on this chapter.Then a model of the built wireless power transfer was designed under COMSOL Multi-physics to study the effects of the magnetic field on two possible body parts of a person who might be exposed to this field, namely the head and the hands. The magnetic flux density, the induced electrical field, the specific absorption rate, and the resulting increase of temperature of biological tissues are modeled and compared to the limits and guidelines prescribed in the regulation established to limit people's exposure to electromagnetic fields. The obtained results are below the guidelines and limitations of exposure to the electromagnetic fields specified by the international organizations.Furthermore, we illustrated under COMSOL the cartography of the magnetic field generated by the prototype's lumped coils. We carried out a modelization to optimize them based on the size of the scooter Chassis. Then we used the coupling coefficient and the quality factors method to find the better coil's shape for a series-series compensation topology. As a result, a circular shape with a diameter of 9.6 cm for the transmitting and receiving coils has the best performanceWe buckled this thesis by studying the impact of shielding on our wireless power transfer system. We carried out modeling under Comsol to evaluate the shielding efficiency of an aluminum plate and the increase in its temperature when it is placed in an area of an alternating magnetic field. The results show a significant increase in the temperature of the aluminum plate, which must be taken into account when shielding the system
Techniques de synchronisation aveugles pour les systèmes codés
No full textThe past few years have seen an increasing demand for efficient and reliable digital communication systems. In order to protect the transmitted data from noise, error correcting codes should be used in the transmission scheme. LDPC (Low Density Parity Check) codes, product codes and turbocodes have proven their efficiency in detecting and correcting errors, even at low SNR (Signal to Noise Ratio). However, a degradation in the performance of these codes is expected in the case of a bad synchronization. Therefore, the use of efficient synchronization methods is essential to keep the system in a good working order. Conventional synchronization techniques involve the insertion of pilot bits in the transmitted sequence of data. The detection of these bits at the reception enables us to carry out synchronization. However, applying these methods decreases the spectral efficiency of the transmission especially when error correcting codes of small sizes are used in the system. For that reason, we are interested in this thesis by the design of novel methods of blind synchronization, which are able to synchronize even on low SNR. We consider in this thesis the problem of frame synchronization, CFO (Carrier Frequency Offset) estimation and phase estimation. We propose powerful synchronization techniques that involve the calculation and the minimization of functions of the LLR (Log-Likelihood Ratio) of the syndrome calculated from the parity check matrix of the error correcting code. Simulation results have shown that the proposed techniques are very powerful and their performance clearly exceeds those of several existing methods.Les dernières années ont vu une augmentation dans la demande de systèmes de communications numériques efficaces et fiables. Afin de protéger les données transmises contre le bruit, les codes correcteurs d'erreurs doivent être introduits dans le système de transmission. Les codes LDPC (Low Density Parity Check), les codes produits et les turbocodes ont prouvé leur efficacité dans la détection et la correction des erreurs, même à des faibles SNR (Signal to Noise Ratio). Cependant, une dégradation importante dans les performances de ces codes est atteinte dans le cas d'une mauvaise synchronisation au niveau du récepteur. Ainsi, l'utilisation de méthodes de synchronisation efficaces est nécessaire pour le bon fonctionnement d'un système de transmission. Les techniques classiques de synchronisation sont basées sur le rajout de bits pilotes dans la séquence de données à transmettre. La détection de ces bits à la réception nous permet de réaliser la synchronisation. Cependant, ces méthodes ont pour effet de diminuer l'efficacité spectrale de la transmission surtout quand des codes correcteurs d'erreurs de petite taille sont utilisés dans le système. Pour cela, nous sommes intéressés dans cette thèse par la conception de nouvelles techniques de synchronisation aveugles, qui sont capables de synchroniser à des faibles SNR. Nous considérons dans cette thèse le problème de la synchronisation trame, de l'estimation du résidu de porteuse et de l'estimation du déphasage. Nous proposons des techniques de synchronisation originales qui sont basées sur le calcul et la minimisation de fonctions du LLR (Log-Likelihood Ratio) du syndrome calculées à partir de la matrice de contrôle de parité du code correcteur d'erreurs. Les résultats des simulations ont montré que les techniques proposées sont très efficaces et leurs performances surpassent celles de plusieurs méthodes existant dans la littérature
Techniques de synchronisation aveugles pour les systèmes codés
No full textThe past few years have seen an increasing demand for efficient and reliable digital communication systems. In order to protect the transmitted data from noise, error correcting codes should be used in the transmission scheme. LDPC (Low Density Parity Check) codes, product codes and turbocodes have proven their efficiency in detecting and correcting errors, even at low SNR (Signal to Noise Ratio). However, a degradation in the performance of these codes is expected in the case of a bad synchronization. Therefore, the use of efficient synchronization methods is essential to keep the system in a good working order. Conventional synchronization techniques involve the insertion of pilot bits in the transmitted sequence of data. The detection of these bits at the reception enables us to carry out synchronization. However, applying these methods decreases the spectral efficiency of the transmission especially when error correcting codes of small sizes are used in the system. For that reason, we are interested in this thesis by the design of novel methods of blind synchronization, which are able to synchronize even on low SNR. We consider in this thesis the problem of frame synchronization, CFO (Carrier Frequency Offset) estimation and phase estimation. We propose powerful synchronization techniques that involve the calculation and the minimization of functions of the LLR (Log-Likelihood Ratio) of the syndrome calculated from the parity check matrix of the error correcting code. Simulation results have shown that the proposed techniques are very powerful and their performance clearly exceeds those of several existing methods.Les dernières années ont vu une augmentation dans la demande de systèmes de communications numériques efficaces et fiables. Afin de protéger les données transmises contre le bruit, les codes correcteurs d'erreurs doivent être introduits dans le système de transmission. Les codes LDPC (Low Density Parity Check), les codes produits et les turbocodes ont prouvé leur efficacité dans la détection et la correction des erreurs, même à des faibles SNR (Signal to Noise Ratio). Cependant, une dégradation importante dans les performances de ces codes est atteinte dans le cas d'une mauvaise synchronisation au niveau du récepteur. Ainsi, l'utilisation de méthodes de synchronisation efficaces est nécessaire pour le bon fonctionnement d'un système de transmission. Les techniques classiques de synchronisation sont basées sur le rajout de bits pilotes dans la séquence de données à transmettre. La détection de ces bits à la réception nous permet de réaliser la synchronisation. Cependant, ces méthodes ont pour effet de diminuer l'efficacité spectrale de la transmission surtout quand des codes correcteurs d'erreurs de petite taille sont utilisés dans le système. Pour cela, nous sommes intéressés dans cette thèse par la conception de nouvelles techniques de synchronisation aveugles, qui sont capables de synchroniser à des faibles SNR. Nous considérons dans cette thèse le problème de la synchronisation trame, de l'estimation du résidu de porteuse et de l'estimation du déphasage. Nous proposons des techniques de synchronisation originales qui sont basées sur le calcul et la minimisation de fonctions du LLR (Log-Likelihood Ratio) du syndrome calculées à partir de la matrice de contrôle de parité du code correcteur d'erreurs. Les résultats des simulations ont montré que les techniques proposées sont très efficaces et leurs performances surpassent celles de plusieurs méthodes existant dans la littérature
The business, economic and policy implications of e-commerce: Lessons for MENA countries
No full textThe Business, Economic, and Policy Implications of E-Commerce: Lessons for MENA Countries, by Imad Moosa, identifies the likely effects of the development of e-commerce on the countries of the region. The author disaggregates these effects into the institutional and organizational changes that are required in terms of: networked firms and consumers, interactive markets, advertising, consumer search, product choice and pricing, and the emergence of new competitive, product, price, and communication strategies. He then underlines the economic effects of e-commerce in terms of output, prices, productivity, and interaction with a more globalized world. The author also points out some of the illusions pertaining to the impact of the ?new economy? animated by the spectacular developments in the Internet, informatics, and telecommunications services. He argues that the potential increase in productivity generated by the ?new economy? has been exaggerated.
The policy implications of the development of e-commerce cover a wide range of areas, notably, technology, trade, regulation, society, finance, and the relationship between government and business. All these implications are important for MENA countries, but the best lesson for the countries of the region, Moosa argues, is that e-commerce is not a magic cure for their economic problems
Carrier phase recovery of LDPC-coded systems based on the likelihood difference algorithm
No full textInternational audienceThe problem of blind phase offset recovery of low density parity-check (LDPC)-coded systems is considered in this paper. We propose a new algorithm of phase offset estimation that involves the computation and maximization of a likelihood difference (LD)-based cost function calculated from the parity-check matrix of the code. We show in this paper that the new cost function has a simplified form compared to another algorithm proposed in the literature and presents similar estimation performance. Mean squared error (MSE) curves show very good performance of the proposed phase offset estimation algorithm, even at low signal-to-noise ratios
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