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Articles 1 - 12 of 12
Full-Text Articles in Engineering
Agricultural Applications For Electromagnetic Exposure, H. Aliakbarian, A. Enayati, Hossein Ameri Mahabadi, M. Ashayer Soltani
Agricultural Applications For Electromagnetic Exposure, H. Aliakbarian, A. Enayati, Hossein Ameri Mahabadi, M. Ashayer Soltani
Hossein Ameri Mahabadi
Despite the advances in bug controlling and antifreezing operations of agricultural products, the devastation of Sunne pests and freezing is still enormous. Traditional treatments such as chemical insecticides for bug controlling and covering to avoid freezing have not been sufficient. In the presented paper, new ideas of using electromagnetic treatment for anti-freezing operation, pre-harvest Sunne pest control, and Orchid flower control are introduced.
Localisation Of Production Placement And Reduction Of Energy Transfer, Tarak Mesbah, Kamel Bounaya, Boukhemis Chetate
Localisation Of Production Placement And Reduction Of Energy Transfer, Tarak Mesbah, Kamel Bounaya, Boukhemis Chetate
Boukhemis Chetate
The first step in the planning of the electrical supply networks consists in defining the optimum placement of one or more power stations; this can be done by the centre of gravity method, or by the minimal reduced costs. The first method take in account only the optimisation of investments, tended that the second in addition to the investments holds operating statement "production cost, cooling and transport." In this study, we show also the strategy and the criteria of delimitation of the zones to electrify by the same departure and to reduce the transfer of power between zones, which has …
Engineering: Beyond Ears In Pre-College Years, Uchechukwu O. Ofoegbu, Ananth N. Iyer, John Helferty, Joseph Fischgrund
Engineering: Beyond Ears In Pre-College Years, Uchechukwu O. Ofoegbu, Ananth N. Iyer, John Helferty, Joseph Fischgrund
Ananth N Iyer
A 12-week program was developed in which electrical engineering concepts, in form of robotics projects, are taught to students at a secondary educational institution for the deaf and hearing impaired. The robotics course was originally designed for, and has been taught for about a decade to freshmen at the Temple University college of Engineering. The objectives of this project range from eliminating existing boundaries of engineering education to increasing the anticipation of success amongst the physically impaired. A prior breakthrough in the extension of engineering education beyond assumed “limits” was achieved when a young man who was both sight and …
Speaker Recognition In Adverse Conditions, Ananth N. Iyer, Uchechukwu O. Ofoegbu, Robert E. Yantorno, Stanley J. Wenndt
Speaker Recognition In Adverse Conditions, Ananth N. Iyer, Uchechukwu O. Ofoegbu, Robert E. Yantorno, Stanley J. Wenndt
Ananth N Iyer
Recognizing speakers from their voices is a challenging area of research with several practical applications. Presently speaker verification (SV) systems achieve a high level of accuracy under ideal conditions such as, when there is ample data to build speaker models and when speaker verification is performed in the presence of little or no interference. In general, these systems assume that the features extracted from the data follow a particular parametric probability density function (pdf), i.e., Gaussian or a mixture of Gaussians; where a form of the pdf is imposed on the speech data rather than determining the underlying structure of …
Unsupervised Indexing Of Noisy Conversations With Short Speaker Utterances, Uchechukwu O. Ofoegbu, Ananth N. Iyer, Robert E. Yantorno, Stanley J. Wenndt
Unsupervised Indexing Of Noisy Conversations With Short Speaker Utterances, Uchechukwu O. Ofoegbu, Ananth N. Iyer, Robert E. Yantorno, Stanley J. Wenndt
Ananth N Iyer
Two speaker indexing system for conversations are presented in this paper. The first method involves indexing two-speaker conversations. In this method, two reference models are judiciously chosen from the conversation such that they represent the two different speakers. Models are then matched to the reference speakers using distance-based comparisons. The second technique is based on first determining the number of participants in the conversation using a speaker count method termed the “Residual Ratio Algorithm” (RRA), and then indexing based on this count. The RRA involves an elimination process in which speech segments matching a chosen set of reference models are …
Ut-Scope: Speech Under Lombard Effect And Cognitive Stress, Ayako Ikeno, Vaishnavi Varadarajan, Sanjay A. Patil, John Hl Hansen
Ut-Scope: Speech Under Lombard Effect And Cognitive Stress, Ayako Ikeno, Vaishnavi Varadarajan, Sanjay A. Patil, John Hl Hansen
Sanjay A. Patil
This paper presents UT-scope data base, and automatic and perceptual an evaluation of Lombard speech in in-set speaker recognition.
Amélioration Des Performances D’Un Variateur De Vitesse Contrôlé Par La Méthode À Flux Orienté, Aissa Kheldoun
Amélioration Des Performances D’Un Variateur De Vitesse Contrôlé Par La Méthode À Flux Orienté, Aissa Kheldoun
Boukhemis Chetate
The present work is an attempt to improve the efficiency and the robustness of vector controlled induction motor drives. In fact, the efficiency of these latter, decrease for two main raisons: rotor resistance variation and light load operating; if the flux level is maintained constant. For this reason, a method is suggested to select the optimal flux which leads to minimum power loss. In another hand, to address the effect of the rotor resistance variation, a fuzzy logic-based mechanism is proposed to maintain the decoupling and avoiding consequently extra power loss. The last part of this thesis is dedicated to …
Speech Under Stress: Analysis, Modeling And Recognition, Sanjay A. Patil, John Hl Hansen
Speech Under Stress: Analysis, Modeling And Recognition, Sanjay A. Patil, John Hl Hansen
Sanjay A. Patil
In this chatpter, we consider a range of issues associated with analysis, modeling, and recognition of speech under stress.
Blackouts In Electric Power Transmission Systems, Ioannis Karamitsos, Konstadinos Orfanidis
Blackouts In Electric Power Transmission Systems, Ioannis Karamitsos, Konstadinos Orfanidis
John P. Karamitsos
No abstract provided.
Very High Bit Rate Digital Subscriber Line (Vdsl2) Technology For Triple Play Services, Ioannis Karamitsos, Athanassios Mavroidis
Very High Bit Rate Digital Subscriber Line (Vdsl2) Technology For Triple Play Services, Ioannis Karamitsos, Athanassios Mavroidis
John P. Karamitsos
No abstract provided.
Contrôle D’Une Éolienne En Fonctionnement Autonome Basée Sur Une Génératrice Asynchrone, Djamila Rekioua Pr
Contrôle D’Une Éolienne En Fonctionnement Autonome Basée Sur Une Génératrice Asynchrone, Djamila Rekioua Pr
REKIOUA Djamila Dr
Cet article présente le contrôle de la tension à la sortie d’une génératrice asynchrone excitée par un onduleur/redresseur à ML1 relié à un condensateur du côté continu du convertisseur pour une utilisation dans les régions éloignées et isolées. Elle est contrôlée en utilisant la commande vectorielle à flux rotorique orienté lorsque la vitesse du rotor et la charge électrique sont variables
Adaptive Control Of Induction Motor With Unknown Motor Resistance, Boukhemis Chetate, Nadir Kabache, Rafik Bradai
Adaptive Control Of Induction Motor With Unknown Motor Resistance, Boukhemis Chetate, Nadir Kabache, Rafik Bradai
Nadir Kabache
In this paper, a new approach for induction motor rotor resistance variation estimate is presented by using adaptive neural networks. Indeed, the proposed neural networks are endowed with adaptive rules that allow them to estimate the true values of the necessary nonlinear state feedbacks for the input-output feedback linearization control of an induction motor. A comparison between the nonlinear state feedbacks provided by neural networks and those calculated through the nominal model of the induction motor with nominal parameters allows us to estimate the variation in the rotor resistance.