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    Erratum: An implementation of a CBIR system based on SVM learning scheme

    , Article Journal of Medical Engineering and Technology ; Volume 37, Issue 3 , 2013 , Pages 235- ; 03091902 (ISSN) Tarjoman, M ; Fatemizadeh, E ; Badie, K ; Sharif University of Technology
    2013

    Correction: Oncolytic paramyxoviruses-induced autophagy; A prudent weapon for cancer therapy (Journal of Biomedical Science (2019) 26 (48) DOI: 10.1186/s12929-019-0542-9)

    , Article Journal of Biomedical Science ; Volume 26, Issue 1 , 2019 ; 10217770 (ISSN) Keshavarz, M ; Solaymani Mohammadi, F ; Miri, S. M ; Ghaemi, A ; Sharif University of Technology
    BioMed Central Ltd  2019
    Abstract
    After publication of this article [1], it was brought to our attention that there are some errors in the section of 'Authors' contributions'. The correct Authors' contributions should be: MK, FS, and AG collected literature, designed and wrote the manuscript. FS and MM edited and prepared the manuscript for submission. All authors read and approved the final manuscript. © 2019 The Author(s)  

    Erratum to "Test-retest reliability of center of pressure measures of postural stability during quiet standing in a group with musculoskeletal disorders consisting of low back pain, anterior cruciate ligament injury and functional ankle instability" [Gait Posture 29 (2009) 460-464] (DOI:10.1016/j.gaitpost.2008.11.016)

    , Article Gait and Posture ; Volume 30, Issue 1 , 2009 , Pages 126- ; 09666362 (ISSN) Salavati, M ; Hadian, M. R ; Mazaheri, M ; Negahban, H ; Ebrahimi, I ; Talebian, S ; Jafari, A. H ; Sanjari, M. A ; Sohani, S. M ; Parnianpour, M ; Sharif University of Technology
    2009

    Developing inherently resilient software against soft-errors based on algorithm level inherent features

    , Article Journal of Electronic Testing: Theory and Applications (JETTA) ; Vol. 30, issue. 2 , 2014 , p. 193-212 Arasteh, B ; Miremadi, S. G ; Rahmani, A. M ; Sharif University of Technology
    Abstract
    A potential peculiarity of software systems is that a large number of soft-errors are inherently derated (masked) at the software level. The rate of error-deration may depend on the type of algorithms and data structures used in the software. This paper investigates the effects of the underlying algorithms of programs on the rate of error-deration. Eight different benchmark programs were used in the study; each of them was implemented by four different algorithms, i.e. divide-and-conquer, dynamic, backtracking and branch-and-bound. About 10,000 errors were injected into each program in order to quantify and analyze the error-derating capabilities of different algorithm-designing- techniques.... 

    A layout-based approach for multiple event transient analysis

    , Article Proceedings - Design Automation Conference ; 2013 ; 0738100X (ISSN) ; 9781450320719 (ISBN) Ebrahimi, M ; Asadi, H ; Tahoori, M. B ; Sharif University of Technology
    2013
    Abstract
    With the emerging nanoscale CMOS technology, Multiple Event Transients (METs) originated from radiation strikes are expected to become more frequent than Single Event Transients (SETs). In this paper, a fast and accurate layout- based Soft Error Rate (SER) estimation technique with consideration of both SET and MET fault models is pro- posed. Unlike previous techniques in which the adjacent MET sites are obtained from logic-level netlist, we perform a comprehensive layout analysis to extract MET adjacent cells. It is shown that layout-based technique is the only effective solution for identification of adjacent cells as netlist-based techniques significantly underestimate the overall SER.... 

    Manufacturing error compensation based on cutting tool location correction in machining processes

    , Article International Journal of Computer Integrated Manufacturing ; Vol. 27, Issue. 11 , 29 Oct , 2014 , pp. 969-978 ; ISSN: 0951192X Khodaygan, S ; Sharif University of Technology
    Abstract
    Inaccuracies in workpiece location lead to errors in position and orientation of machined features on the workpiece, and strongly affect the assemblability and the quality of the product. The accurate positioning of workpiece on a fixture is influenced by rigid body displacements and rotations of the workpiece due to several errors (e.g. geometric radial and position errors in locators and manufacturing tolerances of the workpiece). In this paper, an efficient approach is introduced for analysis and compensation errors in the workpiece-fixture-cutting tool system. A new mathematical formulation of workpiece-fixture modelling is proposed to establish the relationship between the locating... 

    A novel video temporal error concealment algorithm based on moment invariants

    , Article 9th Iranian Conference on Machine Vision and Image Processing, 18 November 2015 through 19 November 2015 ; Volume 2016-February , 2015 , Pages 20-23 ; 21666776 (ISSN) ; 9781467385398 (ISBN) Marvasti Zadeh, S. M ; Ghanei Yakhdan, H ; Kasaei, S ; Sharif University of Technology
    IEEE Computer Society 
    Abstract
    Nowadays, the use of multimedia services such as video sequences is constantly growing. Unfortunately, due to the lack of reliable communication channels and video data sensitivity to transmission errors, the quality of received video might decrease. Therefore, decoder error concealment methods have been developed to retrieve the damaged or lost data. In this paper, a novel temporal error concealment (TEC) algorithm based on moment invariants is presented. It includes three main stages of: designation of candidate motion vectors (MVs) set, adaptive determination of block size in the current and reference frames for feature extraction, and error function calculation based on moment... 

    Toward calibration of low-precision MEMS IMU using a nonlinear model and TUKF

    , Article IEEE Sensors Journal ; Volume 20, Issue 8 , 2020 , Pages 4131-4138 Ghanipoor, F ; Hashemi, M ; Salarieh, H ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2020
    Abstract
    MEMS-IMUs have an extensive application in multifarious studies, as well as industrial and commercial areas. It is crucial to diminish their intrinsic errors in a suitable calibration procedure. In this paper, a novel calibration procedure was proposed for Inertial Measurement Units (IMUs) on a turntable. A general nonlinear model of the IMU output including the effects of bias, scale factor, misalignment, and lever arm was derived. Transformed Unscented Kalman Filter (TUKF) was utilized to perform the estimation of error parameters for gyroscopes and accelerometers. The calibration maneuvers were applied using a tri-axis turntable to create input signals. In addition, assuming the sensors... 

    Phase-change memory architectures

    , Article Advances in Computers ; Volume 118 , 2020 , Pages 29-48 Asadinia, M ; Sarbazi Azad, H ; Sharif University of Technology
    Academic Press Inc  2020
    Abstract
    Some of the recent approaches regarding leverage PCM will be reviewed in this chapter. The chapter starts with a discussion regarding future main memory systems that includes hybrid architecture schemes using both PCM and DRAM arrays. Later, we focus on PCM only approaches and this section will help describe some techniques for reducing the increased read latency because of slow writes in PCMs. In this chapter, we also illustrate wear-leveling approaches and review the security problems of this memory approach which are lifetime limited. This section includes an overview of the recent security aware wear-leveling techniques, whose methods help detect attacks, and their issues during the... 

    Determination of active sliding mode controller parameters in synchronizing different chaotic systems

    , Article Chaos, Solitons and Fractals ; Volume 32, Issue 2 , 2007 , Pages 583-591 ; 09600779 (ISSN) Tavazoei, M. S ; Haeri, M ; Sharif University of Technology
    2007
    Abstract
    In this paper, we propose an algorithm to determine the active sliding mode controller parameters in synchronizing different chaotic systems. The resulted control parameters not only secure stability of the error systems, they can also be adjusted to obtain the desired rate of error convergence. Numerical simulations are presented to evaluate effectiveness of the proposed algorithm where the Lü system is implemented as the response (slave) system. © 2005 Elsevier Ltd. All rights reserved  

    An algorithm for geometrical uncertainty analysis in planar truss structures

    , Article Structural and Multidisciplinary Optimization ; Vol. 49, issue. 2 , February , 2014 , pp. 225-238 ; Online ISSN: 1615-1488 Aghabeigi, M ; Movahhedy, M. R ; Sharif University of Technology
    Abstract
    An algorithm is proposed for description of error accumulation during assembly process of planar truss structures. Specifically, given the tolerances of pre-fabricated members, the uncertainty in the position of nodes is calculated in terms of variances and covariances. Twoconstituent elements of planar trusses (i.e. two-bar unit cell and redundant member) are formulated based on linear models of kinematics and deformation mechanics. Subsequently, these models are combined together in a single algorithm to construct a suitable procedure for estimation of uncertainty zone of each node. Accuracy of the developed method is verified by comparing its results with outcomes of Monte Carlo... 

    On the error in phase transition computations for compressed sensing

    , Article IEEE Transactions on Information Theory ; Volume 65, Issue 10 , 2019 , Pages 6620-6632 ; 00189448 (ISSN) Daei, S ; Haddadi, F ; Amini, A ; Lotz, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2019
    Abstract
    Evaluating the statistical dimension is a common tool to determine the asymptotic phase transition in compressed sensing problems with Gaussian ensemble. Unfortunately, the exact evaluation of the statistical dimension is very difficult and it has become standard to replace it with an upper-bound. To ensure that this technique is suitable, [1] has introduced an upper-bound on the gap between the statistical dimension and its approximation. In this work, we first show that the error bound in [1] in some low-dimensional models such as total variation and ell _{1} analysis minimization becomes poorly large. Next, we develop a new error bound which significantly improves the estimation gap... 

    RAW-Tag: Replicating in altered cache ways for correcting multiple-bit errors in tag array

    , Article IEEE Transactions on Dependable and Secure Computing ; Volume 16, Issue 4 , 2019 , Pages 651-664 ; 15455971 (ISSN) Farbeh, H ; Mozafari, F ; Zabihi, M ; Miremadi, S. G ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2019
    Abstract
    Tag array in on-chip caches is one of the most vulnerable components to radiation-induced soft errors. Protecting the tag array in some processors is limited to error detection using the parity check, since the overheads of error correcting codes are not affordable in this component. State-of-The-Art tag protection schemes combine the parity check with replication to provide error correction capability. Classifying these replication-based schemes into partial-replication and full-replication, the former offers a low overhead protection in which a large fraction of detectable errors remain uncorrectable, whereas the latter imposes a significant overhead to correct all of the errors. This... 

    A low energy soft error-tolerant register file architecture for embedded processors

    , Article 11th IEEE High Assurance Systems Engineering Symposium, HASE 2008, Nanjing, 3 December 2008 through 5 December 2008 ; December , 2008 , Pages 109-116 ; 15302059 (ISSN); 9780769534824 (ISBN) Fazeli, M ; Ahmadian, S. N ; Miremadi, S. G ; Nanjing University; IEEE Computer Society; IEEE Reliability Society ; Sharif University of Technology
    2008
    Abstract
    This paper presents a soft error-tolerant architecture to protect embedded processors register files. The proposed architecture is based on selectively duplication of the most vulnerable registers values in a cache memory embedded beside the processor register file so called register cache. To do this, two parity bits are added to each register of the processor to detect up to three contiguous errors. To recover the erroneous register value, two distinct cache memories are utilized for storing the redundant copy of the vulnerable registers, one for short lived registers and the other one for long lived registers. The proposed method has two key advantageous as compared to fully ECC protected... 

    Wide-range single-ended CMOS track-and-hold circuit

    , Article IEICE Electronics Express ; Volume 4, Issue 12 , 2007 , Pages 400-405 ; 13492543 (ISSN) Movahedian, H ; Sedighi, B ; Sharif Bakhtiar, M ; Sharif University of Technology
    2007
    Abstract
    This paper investigates the performance of a MOS track-and-hold circuit as the front end of a wide input range and high-speed single-sided ADC. In order to reduce charge injection and clock feedthrough errors, a new technique for employing a dummy transistor in the bootstrapped switch of the track and hold circuit is introduced. Performance of the proposed circuit for the two cases of constant and non-linear hold capacitor is studied. It is also shown that how and when dummy switch and bulk switching method can improve the accuracy of theT/H. © IEICE 2007  

    Synchronizability of dynamical scale-free networks subject to random errors

    , Article Physica A: Statistical Mechanics and its Applications ; Volume 390, Issue 23-24 , 2011 , Pages 4588-4595 ; 03784371 (ISSN) Jalili, M ; Sharif University of Technology
    Abstract
    In this paper the robustness of network synchronizability against random deletion of nodes, i.e. errors, in dynamical scale-free networks was studied. To this end, two measures of network synchronizability, namely, the eigenratio of the Laplacian and the order parameter quantifying the degree of phase synchrony were adopted, and the synchronizability robustness on preferential attachment scale-free graphs was investigated. The findings revealed that as the network size decreases, the robustness of its synchronizability against random removal of nodes declines, i.e. the more the number of randomly removed nodes from the network, the worse its synchronizability. We also showed that this... 

    PSP-Cache: A low-cost fault-tolerant cache memory architecture

    , Article Proceedings -Design, Automation and Test in Europe, DATE ; 2014 ; ISSN: 15301591 ; ISBN: 9783981537024 Farbeh, H ; Miremadi, S. G ; Sharif University of Technology
    Abstract
    Cache memories constitute a large fraction of processor chip area and are highly vulnerable to soft errors caused by energetic particles. To protect these memories, most of the modern processors employ Error Detection Codes (EDCs) or Error Correction Codes (ECCs). EDCs/ECCs impose significant overheads in terms of area and energy; these overheads increase as a function of interleaving EDCs/ECCs to detect/correct multiple errors. This paper proposes a new cache architecture to minimize the area and energy overheads of EDCs/ECCs in set-associative L1-caches. Simulation results for a 4-way set-associative cache show that the proposed architecture reduces both the area and static power overheads... 

    Geometrical analysis of localization error in stereo vision systems

    , Article IEEE Sensors Journal ; Volume 13, Issue 11 , 2013 , Pages 4236-4246 ; 1530437X (ISSN) Fooladgar, F ; Samavi, S ; Soroushmehr, S. M. R ; Shirani, S ; Sharif University of Technology
    2013
    Abstract
    Determining an object location in a specific region is an important task in many machine vision applications. Different parameters affect the accuracy of the localization process. The quantization process in charge-coupled device of a camera is one of the sources of error that causes estimation rather than identifying the exact position of the observed object. A cluster of points, in the field of view of a camera are mapped into a pixel. These points form an uncertainty region. In this paper, we present a geometrical model to analyze the volume of this uncertainty region as a criterion for object localization error. The proposed approach models the field of view of each pixel as an oblique... 

    Topological code autotune

    , Article Physical Review X ; Volume 2, Issue 4 , October , 2012 ; 21603308 (ISSN) Fowler, A. G ; Whiteside, A. C ; McInnes, A. L ; Rabbani, A ; Sharif University of Technology
    2012
    Abstract
    Many quantum systems are being investigated in the hope of building a large-scale quantum computer. All of these systems suffer from decoherence, resulting in errors during the execution of quantum gates. Quantum error correction enables reliable quantum computation given unreliable hardware. Unoptimized topological quantum error correction (TQEC), while still effective, performs very suboptimally, especially at low error rates. Hand optimizing the classical processing associated with a TQEC scheme for a specific system to achieve better error tolerance can be extremely laborious. We describe a tool, AUTOTUNE, capable of performing this optimization automatically, and give two highly... 

    An algebraic gain estimation method to improve the performance of HMM-based speech enhancement systems

    , Article Proceedings - 2010 18th Iranian Conference on Electrical Engineering, ICEE 2010, 11 May 2010 through 13 May 2010 ; 2010 , Pages 336-339 ; 9781424467600 (ISBN) Mariooryad, S ; Sameti, H ; Veisi, H ; Sharif University of Technology
    Abstract
    An extension to conventional Hidden Markov Model (HMM)-based speech enhancement method is developed. An algebraic method is proposed to estimate gain of speech and noise in order to improve the quality of the estimated speech. Different pronunciations and intonations may affect speech gain. Besides, gain of noise may vary remarkably from one environment to the other one. This may lead in a mismatch between energy contour of trained models and energy contour of noisy speech signal. In this work, speech gain and noise gain are estimated based on an algebraic method simultaneously in order to match gain of noisy speech and noisy model. To carry out this procedure an extension of least square...