The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Modeling the emotional content of music is of great importance, since it is believed that music is capable of inducing different emotions. In this study we present an Autoregressive with Exogenous Input (ARX) model based on system identification theory for modeling the emotional content of music in a two dimensional emotion space and also a nonlinear Autoregressive with Exogenous Input (NARX) model...
Cerebrovascular accident (CVA) or stroke is one of the main causes of disability. It affects millions of people worldwide. One symptom of stroke is disabled arm function. Restoration of arm function is necessary to resuming activities of daily living (ADL). Along with traditional rehabilitation techniques, robot-aided therapy has emerged in recent years. Robot-aided arm therapy is more intensive,...
To relate electromyographic signals (EMG) to net joint torque, different approaches have been taken into account. In this regard, some researchers chose to use Principal Component Analysis (PCA). A Study in 2001 reported a linear relationship between the PCA-processed EMG data and the joint torque while investigating isometric movements. In this project we questioned the possibility to use this method...
Separation of nano-particles from the fluid in micro-channels has a wide application in industry and is the subject of a plenty of researches today. In the present paper, the flow of blood plasma which contains ions and is considered as nano-particles in a micro-channel has been studied. The channel inside wall is of a porous material which consists of amino functionalized group-type one that causes...
An abnormal narrowing of a blood vessel (stenosis) is investigated in this study. The present work provides a simulation of blood in a vessel with 50% stenosis. In addition, the effects of tissue surrounding the blood vessel on displacements and stresses in stenotic vessel wall are considered. The analysis consists of two distinct but coupled procedures: first, a fluid-dynamics analysis including...
Teeth segmentation is an important step in human identification and Content Based Image Retrieval (CBIR) systems. This paper proposes a new approach for teeth segmentation using morphological operations and watershed algorithm. In Cone Beam Computer Tomography (CBCT) and Multi Slice Computer Tomography (MSCT) each tooth is an elliptic shape region that cannot be separated only by considering their...
In this paper a nonlinear fuzzy model was introduced to reveal the dynamics of auditory brainstem response to one syllable speech stimuli /da/, in normal Persian speaking subjects. This model represents the input-output behavior of the brainstem in generating cABR (complex auditory brainstem response) to consonant-vowel /da/. Fuzzy models have been successfully applied to the identification of complex...
In this work we propose a model to describe impairment of Long-Term Potentiation (LTP) due to Amyloid Beta (Aβ) accumulation during Alzheimer's Disease (AD) in hippocampus. The model embeds astrocyte-neuron interactions and Spike Timing-Dependent Plasticity (STDP) in CA3-CA1 synapses. In our proposed model, considering physiological facts, each astrocyte has a bidirectional signaling with four neurons,...
Advanced medical imaging techniques require high performance segmentation algorithms. Extracting the structures of interest accurately is one of the main challenges in medical imaging segmentation. In this paper a methodological approach based on active contour is proposed for fully automated segmentation of radius bone. As soft tissues like tendons, muscles and fat around the bone have close intensities...
Flow Mediated Dilation (FMD) is a non-invasive method to assess vascular health. In this method cuff occlusion is used to create reactive hyperemia and measure the following dilation of brachial artery. Although many researches have been conducted in this area, there still exist many debates about the method as the position of the cuff, duration of the occlusion and the involved physiological procedures...
Analysis of the heart rate (HR) variation due to respiration, known as respiratory sinus arrhythmia (RSA), is a method to assess the autonomic nervous system (ANS) function. In this paper a physiologically-based mathematical model consisting of the cardiorespiratory system and ANS control has been used in order to study the cardiovascular response (mean arterial blood pressure and HR) to breathing...
Horizontal leg press is a basic weight training exercise to strengthen extensor muscles of knee joint. Considering the specific purpose of this training, it's performed with different techniques. One of the major debates about performing this task concerns foot placement on the foot-plate. In this study, in order to investigate the effect of foot placement on the muscle contraction of knee extensors,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.