Loading...
Search for: model-and-simulation
0.007 seconds
Total 81 records

    Design, Simulation, and Evaluation of Automated Container Terminals

    , Article IEEE Transactions on Intelligent Transportation Systems ; Volume 3, Issue 1 , 2002 , Pages 12-26 ; 15249050 (ISSN) Liu, C. I ; Jula, H ; Ioannou, P. A ; Sharif University of Technology
    2002
    Abstract
    Due to the boom in world trade, port authorities are looking into ways of making existing facilities more efficient. One way to improve efficiency, increase capacity, and meet future demand is to use advanced technologies and automation in order to speed up terminal operations. In this paper, we design, analyze, and evaluate four different automated container terminal (ACT) concepts. These concepts include automated container terminals based on the use of automated guidance vehicles (AGVs), a linear motor conveyance system (LMCS), an overhead grid rail system (GR), and a high-rise automated storage and retrieval structure (AS/RS). We use future demand scenarios to design the characteristics... 

    Mathematical modeling and simulation of hollow fiber membranes for separation of gas mixtures: Case study with separation of H 2S/CH 4 by polyphenylene oxide (PPO) hollow fiber module

    , Article 19th International Congress of Chemical and Process Engineering, CHISA 2010 and 7th European Congress of Chemical Engineering, ECCE-7, Prague, 28 August 2010 through 1 September 2010 ; 2010 Niknejad, S. M. S ; Savoji, H ; Soltanieh, M ; Sharif University of Technology
    2010
    Abstract
    A mathematical model has been developed that is based the dual sorption in the dense layer and pore flow in the porous layer. In the porous layer a resistance model is applied where four mechanisms, i.e., Knudsen, Viscous, Slip, and Surface flows, are superimposed. Steady-state, constant pressure along the membrane and constant physical properties are assumed. Its application to the separation of H 2S/CH 4 gas mixtures as a sour gas in natural gas sweetening by using a PPO hollow fiber module is put forward. The Quasi Newton method is used to determine the parameters of membrane transport model for the case of H 2S/CH 4 separation. The H 2S and CH 4 permeances increased by increasing the... 

    Robust modeling, sliding-mode controller, and simulation of an underactuated rov under parametric uncertainties and disturbances

    , Article Journal of Marine Science and Application ; 2018 ; 16719433 (ISSN) Eslami, M ; Chin, C. S ; Nobakhti, A ; Sharif University of Technology
    Harbin Engineering University  2018
    Abstract
    A dynamic model of a remotely operated vehicle (ROV) is developed. The hydrodynamic damping coefficients are estimated using a semi-predictive approach and computational fluid dynamic software ANSYS-CFX™ and WAMIT™. A sliding-mode controller (SMC) is then designed for the ROV model. The controller is subsequently robustified against modeling uncertainties, disturbances, and measurement errors. It is shown that when the system is subjected to bounded uncertainties, the SMC will preserve stability and tracking response. The paper ends with simulation results for a variety of conditions such as disturbances and parametric uncertainties. © 2018, Harbin Engineering University and Springer-Verlag... 

    Robust modeling, sliding-mode controller, and simulation of an underactuated rov under parametric uncertainties and disturbances

    , Article Journal of Marine Science and Application ; Volume 18, Issue 2 , 2019 , Pages 213-227 ; 16719433 (ISSN) Eslami, M ; Chin, C. S ; Nobakhti, A ; Sharif University of Technology
    Harbin Engineering University  2019
    Abstract
    A dynamic model of a remotely operated vehicle (ROV) is developed. The hydrodynamic damping coefficients are estimated using a semi-predictive approach and computational fluid dynamic software ANSYS-CFX™ and WAMIT™. A sliding-mode controller (SMC) is then designed for the ROV model. The controller is subsequently robustified against modeling uncertainties, disturbances, and measurement errors. It is shown that when the system is subjected to bounded uncertainties, the SMC will preserve stability and tracking response. The paper ends with simulation results for a variety of conditions such as disturbances and parametric uncertainties. © 2018, Harbin Engineering University and Springer-Verlag... 

    Modelling, simulation and workspace analysis of a 3D cable based robot

    , Article Proceedings of the IASTED International Conference on Modelling and Simulation, 26 May 2008 through 28 May 2008, Quebec City, QC ; 2008 , Pages 127-132 ; 10218181 (ISSN); 9780889867420 (ISBN) Hamedi, J ; Zohoor, H ; Sharif University of Technology
    2008
    Abstract
    This article proposes modelling, simulation and applied wrench workspace analysis of a 3D cable based robots which are consist of six cables are studies. After modelling, the kinds of workspace are defined then an available static combined workspace for different geometric structures of fixed and moving platform is obtained. This workspace is defined as the situations of reference point of the moving platform (center of mass) which under external forces such as weight and with ignorance of inertial effects, the end effector should be in static equilibrium under conditions that length of all cables must not be exceeded from the maximum value and all of cables must be at tension (they must... 

    Effect of capillary tube's shape on capillary rising regime for viscos fluids

    , Article 2017 International Conference on Nanomaterials and Biomaterials, ICNB 2017, 11 December 2017 through 13 December 2017 ; Volume 350, Issue 1 , 2018 ; 17578981 (ISSN) Soroush, F ; Moosavi, A ; Sharif University of Technology
    Institute of Physics Publishing  2018
    Abstract
    When properties of the displacing fluid are considered, the rising profile of the penetrating fluid in a capillary tube deviates from its classical Lucas-Washburn profile. Also, shape of capillary tube can affect the rising profile in different aspects. In this article, effect of capillary tube's shape on the vertical capillary motion in presence of gravity is investigated by considering the properties of the displacing fluid. According to the fact that the differential equation of the capillary rising for a non-simple wall type is very difficult to solve analytically, a finite element simulation model is used for this study. After validation of the simulation model with an experiment that... 

    Model enrichment: Concept, measurement, and application

    , Article Journal of Simulation ; Volume 6, Issue 2 , 2012 , Pages 125-140 ; 17477778 (ISSN) Yavari, E ; Roeder, T ; Sharif University of Technology
    Abstract
    Simplicity and validity are recognized as important attributes of an effective simulation model. However, some disagreement exists both on the definitions of these concepts and on quantitative measures for them. This paper introduces Enrichment Level (EL) for (simulation) models. The EL is a quantitative measure to compare the effectiveness of alternative models when used in a particular project. While there is no conceptual restriction on expanding the EL, it currently captures the bias, speed, variance, and scope of a model as the main contributing enrichment factors. This paper explores these factors and suggests a utility-based method to combine them according to the relative importance... 

    Performance of τ-lepton reconstruction and identification in CMS

    , Article Journal of Instrumentation ; Volume 7, Issue 1 , 2012 ; 17480221 (ISSN) Chatrchyan, S ; Khachatryan, V ; Sirunyan, A. M ; Tumasyan, A ; Adam, W ; Bergauer, T ; Dragicevic, M ; Erö, J ; Fabjan, C ; Friedl, M ; Frühwirth, R ; Ghete, V. M ; Hammer, J ; Hünsel, S ; Hoch, M ; Hörmann, N ; Hrubec, J ; Jeitler, M ; Kiesenhofer, W ; Krammer, M ; Liko, D ; Mikulec, I ; Pernicka, M ; Rahbaran, B ; Rohringer, H ; Schöfbeck, R ; Strauss, J ; Taurok, A ; Teischinger, F ; Trauner, C ; Wagner, P ; Waltenberger, W ; Walzel, G ; Widl, E ; Wulz, C. E ; Mossolov, V ; Shumeiko, N ; Gonzalez, J. S ; Bansal, S ; Benucci, L ; De Wolf, E. A ; Janssen, X ; Luyckx, S ; Maes, T ; Mucibello, L ; Ochesanu, S ; Roland, B ; Rougny, R ; Selvaggi, M ; Van Haevermaet, H ; Van Mechelen, P ; Van Remortel, N ; Blekman, F ; Blyweert, S ; D'Hondt, J ; Gonzalez Suarez, R ; Kalogeropoulos, A ; Maes, M ; Olbrechts, A ; Van Doninck, W ; Van Mulders, P ; Van Onsem, G. P ; Villella, I ; Charaf, O ; Clerbaux, B ; De Lentdecker, G ; Dero, V ; Gay, A. P. R ; Hammad, G. H ; Hreus, T ; Marage, P. E ; Raval, A ; Thomas, L ; Vander Marcken, G ; Vander Velde, C ; Vanlaer, P ; Adler, V ; Cimmino, A ; Costantini, S ; Grunewald, M ; Klein, B ; Lellouch, J ; Marinov, A ; Mccartin, J ; Ryckbosch, D ; Thyssen, F ; Tytgat, M ; Vanelderen, L ; Verwilligen, P ; Walsh, S ; Zaganidis, N ; Basegmez, S ; Bruno, G ; Caudron, J ; Ceard, L ; Cortina Gil, E ; De Favereau De Jeneret, J ; Delaere, C ; Favart, D ; Giammanco, A ; Grégoire, G ; Hollar, J ; Lemaitre, V ; Liao, J ; Militaru, O ; Nuttens, C ; Ovyn, S ; Pagano, D ; Pin, A ; Piotrzkowski, K ; Schul, N ; Beliy, N ; Caebergs, T ; Daubie, E ; Alves, G. A ; Brito, L ; De Jesus Damiao, D ; Pol, M. E ; Souza, M. H. G ; Aldé Jénior, W. L ; Carvalho, W ; Da Costa, E. M ; De Oliveira Martins, C ; Fonseca De Souza, S ; Matos Figueiredo, D ; Mundim, L ; Nogima, H ; Oguri, V ; Prado Da Silva, W. L ; Santoro, A ; Silva Do Amaral, S. M ; Sznajder, A ; Anjos, T. S ; Bernardes, C. A ; Dias, F. A ; Fernandez Perez Tomei, T. R ; Gregores, E. M ; Lagana, C ; Marinho, F ; Mercadante, P. G ; Novaes, S. F ; Padula, S. S ; Darmenov, N ; Genchev, V ; Iaydjiev, P ; Piperov, S ; Rodozov, M ; Stoykova, S ; Sultanov, G ; Tcholakov, V ; Trayanov, R ; Vutova, M ; Dimitrov, A ; Hadjiiska, R ; Karadzhinova, A ; Kozhuharov, V ; Litov, L ; Mateev, M ; Pavlov, B ; Petkov, P ; Bian, J. G ; Chen, G. M ; Chen, H. S ; Jiang, C. H ; Liang, D ; Liang, S ; Meng, X ; Tao, J ; Wang, J ; Wang, J ; Wang, X ; Wang, Z ; Xiao, H ; Xu, M ; Zang, J ; Zhang, Z ; Ban, Y ; Guo, S ; Guo, Y ; Li, W ; Mao, Y ; Qian, S. J ; Teng, H ; Zhu, B ; Zou, W ; Cabrera, A ; Gomez Moreno, B ; Ocampo Rios, A. A ; Osorio Oliveros, A. F ; Sanabria, J. C ; Godinovic, N ; Lelas, D ; Lelas, K ; Plestina, R ; Polic, D ; Puljak, I ; Antunovic, Z ; Dzelalija, M ; Kovac, M ; Brigljevic, V ; Duric, S ; Kadija, K ; Luetic, J ; Morovic, S ; Attikis, A ; Galanti, M ; Mousa, J ; Nicolaou, C ; Ptochos, F ; Razis, P. A ; Finger, M ; Finger Jr., M ; Assran, Y ; Ellithi Kamel, A ; Khalil, S ; Mahmoud, M. A ; Radi, A ; Hektor, A ; Kadastik, M ; Müntel, M ; Raidal, M ; Rebane, L ; Tiko, A ; Azzolini, V ; Eerola, P ; Fedi, G ; Voutilainen, M ; Czellar, S ; Hürkönen, J ; Heikkinen, A ; Karimüki, V ; Kinnunen, R ; Kortelainen, M. J ; Lampén, T ; Lassila Perini, K ; Lehti, S ; Lindén, T ; Luukka, P ; Müenpüü, T ; Tuominen, E ; Tuominiemi, J ; Tuovinen, E ; Ungaro, D ; Wendland, L ; Banzuzi, K ; Karjalainen, A ; Korpela, A ; Tuuva, T ; Sillou, D ; Besancon, M ; Choudhury, S ; Dejardin, M ; Denegri, D ; Fabbro, B ; Faure, J. L ; Ferri, F ; Ganjour, S ; Givernaud, A ; Gras, P ; De Monchenault, G. H ; Jarry, P ; Locci, E ; Malcles, J ; Marionneau, M ; Millischer, L ; Rander, J ; Rosowsky, A ; Shreyber, I ; Titov, M ; Baffioni, S ; Beaudette, F ; Benhabib, L ; Bianchini, L ; Bluj, M ; Broutin, C ; Busson, P ; Charlot, C ; Dahms, T ; Dobrzynski, L ; Elgammal, S ; De Cassagnac, R. G ; Haguenauer, M ; Miné, P ; Mironov, C ; Ochando, C ; Paganini, P ; Sabes, D ; Salerno, R ; Sirois, Y ; Thiebaux, C ; Veelken, C ; Zabi, A ; Agram, J. L ; Andrea, J ; Bloch, D ; Bodin, D ; Brom, J. M ; Cardaci, M ; Chabert, E. C ; Collard, C ; Conte, E ; Drouhin, F ; Ferro, C ; Fontaine, J. C ; Gelé, D ; Goerlach, U ; Greder, S ; Juillot, P ; Karim, M ; Le Bihan, A. C ; Mikami, Y ; Van Hove, P ; Fassi, F ; Mercier, D ; Baty, C ; Beauceron, S ; Beaupere, N ; Bedjidian, M ; Bondu, O ; Boudoul, G ; Boumediene, D ; Brun, H ; Chasserat, J ; Chierici, R ; Contardo, D ; Depasse, P ; El Mamouni, H ; Fay, J ; Gascon, S ; Ille, B ; Kurca, T ; Le Grand, T ; Lethuillier, M ; Mirabito, L ; Perries, S ; Sordini, V ; Tosi, S ; Tschudi, Y ; Verdier, P ; Viret, S ; Lomidze, D ; Anagnostou, G ; Beranek, S ; Edelhoff, M ; Feld, L ; Heracleous, N ; Hindrichs, O ; Jussen, R ; Klein, K ; Merz, J ; Mohr, N ; Ostapchuk, A ; Perieanu, A ; Raupach, F ; Sammet, J ; Schael, S ; Sprenger, D ; Weber, H ; Weber, M ; Wittmer, B ; Zhukov, V ; Ata, M ; Dietz Laursonn, E ; Erdmann, M ; Hebbeker, T ; Heidemann, C ; Hinzmann, A ; Hoepfner, K ; Klimkovich, T ; Klingebiel, D ; Kreuzer, P ; Lanskey, D ; Lingemann, J ; Magass, C ; Merschmeyer, M ; Meyer, A ; Papacz, P ; Pieta, H ; Reithler, H ; Schmitz, S. A ; Sonnenschein, L ; Steggemann, J ; Teyssier, D ; Bontenackels, M ; Cherepanov, V ; Davids, M ; Flügge, G ; Geenen, H ; Giffels, M ; Haj Ahmad, W ; Hoehle, F ; Kargoll, B ; Kress, T ; Kuessel, Y ; Linn, A ; Nowack, A ; Perchalla, L ; Pooth, O ; Rennefeld, J ; Sauerland, P ; Sharif University of Technology
    2012
    Abstract
    The performance of τ-lepton reconstruction and identification algorithms is studied using a data sample of proton-proton collisions at s = 7 TeV, corresponding to an integrated luminosity of 36 pb-1 collected with the CMS detector at the LHC. The τ leptons that decay into one or three charged hadrons, zero or more short-lived neutral hadrons, and a neutrino are identified using final-state particles reconstructed in the CMS tracker and electromagnetic calorimeter. The reconstruction efficiency of the algorithms is measured using τ leptons produced in Z-boson decays. The τ-lepton misidentification rates for jets and electrons are determined  

    Determination of jet energy calibration and transverse momentum resolution in CMS

    , Article Journal of Instrumentation ; Volume 6, Issue 11 , 2011 ; 17480221 (ISSN) Chatrchyan, S ; Khachatryan, V ; Sirunyan, A. M ; Tumasyan, A ; Adam, W ; Bergauer, T ; Dragicevic, M ; Ero, J ; Fabjan, C ; Friedl, M ; Fruhwirth, R ; Ghete, V.M ; Hammer, J ; Hansel, S ; Hoch, M ; Hormann, N ; Hrubec, J ; Jeitler, M ; Kiesenhofer, W ; Krammer, M ; Liko, D ; Mikulec, I ; Pernick, M ; Rahbaran, B ; Rohringer, H ; Schöfbeck, R ; Strauss, J ; Taurok, A ; Teischinger, F ; Wagner, P ; Waltenberger, W ; Walzel, G ; Widl, E ; Wulz, C. E ; Mossolov, V ; Shumeiko, N ; Suarez Gonzalez, J ; Bansal, S ; Benucci, L ; De Wolf, E. A ; Janssen, X ; Maes, T ; Mucibello, L ; Ochesanu, S ; Roland, B ; Rougny, R ; Selvaggi, M ; Van Haevermaet, H ; Van Mechelen, P ; Van Remortel, N ; Blekman, F ; Blyweert, S ; D'Hondt, J ; Devroede, O ; Gonzalez Suarez, R ; Kalogeropoulos, A ; Maes, M ; Van Doninck, W ; Van Mulders, P ; Van Onsem, G. P ; Villella, I ; Charaf, O ; Clerbaux, B ; De Lentdecker, G ; Dero, V ; Gay, A. P. R ; Hammad, G. H ; Hreus, T ; Marage, P. E ; Raval, A ; Thomas, L ; Vander Velde, C ; Vanlaer, P ; Adler, V ; Cimmino, A ; Costantini, S ; Grunewald, M ; Klein, B ; Lellouch, J ; Marinov, A ; McCartin, J ; Ryckbosch, D ; Thyssen, F ; Tytgat, M ; Vanelderen, L ; Verwilligen, P ; Walsh, S ; Zaganidis, N ; Basegmez, S ; Bruno, G ; Caudron, J ; Ceard, L ; Cortina Gil, E ; De Favereau De Jeneret, J ; Delaere, C ; Favart, D ; Giammanco, A ; Grégoire, G ; Hollar, J ; Lemaitre, V ; Liao, J ; Militaru, O ; Nuttens, C ; Ovyn, S ; Pagano, D ; Pin, A ; Piotrzkowski, K ; Schul, N ; Beliy, N ; Caebergs, T ; Daubie, E ; Alves, G. A ; Brito, L ; De Jesus Damiao, D ; Pol, M. E ; Souza, M. H. G ; Aldá Júnior, W. L ; Carvalho, W ; Da Cost, E. M ; De Oliveira Martins, C ; Fonseca De Souz, S ; Mundim, L ; Nogim, H ; Oguri, V ; Prado Da Silv, W. L ; Santoro, A ; Silva Do Amaral, S. M ; Sznajder, A ; Bernardes, C. A ; Dias, F. A ; Dos Anjos Costa, T ; Fernandez Perez Tomei, T. R ; Gregores, E. M ; Lagan, C ; Marinho, F ; Mercadante, P. G ; Novaes, S. F ; Padula, S. S ; Darmenov, N ; Genchev, V ; Iaydjiev, P ; Piperov, S ; Rodozov, M ; Stoykov, S ; Sultanov, G ; Tcholakov, V ; Trayanov, R ; Dimitrov, A ; Hadjiisk, R ; Karadzhinov, A ; Kozhuharov, V ; Litov, L ; Mateev, M ; Pavlov, B ; Petkov, P ; Bian, J. G ; Chen, G. M ; Chen, H. S ; Jiang, C. H ; Liang, D ; Liang, S ; Meng, X ; Tao, J ; Wang, J ; Wang, J ; Wang, X ; Wang, Z ; Xiao, H ; Xu, M ; Zang, J ; Zhang, Z ; Ban, Y ; Guo, S ; Guo, Y ; Li, W ; Mao, Y ; Qian, S.J ; Teng, H ; Zhu, B ; Zou, W ; Cabrer, A ; Gomez Moreno, B ; Ocampo Rios, A. A ; Osorio Oliveros, A. F ; Sanabria, J. C ; Godinovic, N ; Lelas, D ; Lelas, K ; Plestina, R ; Polic, D ; Puljak, I ; Antunovic, Z ; Dzelalija, M ; Brigljevic, V ; Duric, S ; Kadij, K ; Luetic, J ; Morovic, S ; Attikis, A ; Galanti, M ; Mous, J ; Nicolaou, C ; Ptochos, F ; Razis, P. A ; Finger, M ; Finger Jr., M ; Assran, Y ; Ellithi Kamel, A ; Khalil, S ; Mahmoud, M. A ; Radi, A ; Hektor, A ; Kadastik, M ; Müntel, M ; Raidal, M ; Rebane, L ; Tiko, A ; Azzolini, V ; Eerol, P ; Fedi, G ; Czellar, S ; Harkonen, J ; Heikkinen, A ; Karimai, V ; Kinnunen, R ; Kortelainen, M. J ; Lampén, T ; Lassila Perini, K ; Lehti, S ; Linden, T ; Luukk, P ; Mäenpa, T ; Tuominen, E ; Tuominiemi, J ; Tuovinen, E ; Ungaro, D ; Wendland, L ; Banzuzi, K ; Karjalainen, A ; Korpel, A ; Tuuva, T ; Sillou, D ; Besancon, M ; Choudhury, S ; Dejardin, M ; Denegri, D ; Fabbro, B ; Faure, J. L ; Ferri, F ; Ganjour, S ; Gentit, F. X ; Givernaud, A ; Gras, P ; Hamel De Monchenault, G ; Jarry, P ; Locci, E ; Malcles, J ; Marionneau, M ; Millischer, L ; Rander, J ; Rosowsky, A ; Shreyber, I ; Titov, M ; Verrecchia, P ; Baffioni, S ; Beaudette, F ; Benhabib, L ; Bianchini, L ; Bluj, M ; Broutin, C ; Busson, P ; Charlot, C ; Dahms, T ; Dobrzynski, L ; Elgammal, S ; Granier De Cassagnac, R ; Haguenauer, M ; Miné, P ; Mironov, C ; Ochando, C ; Paganini, P ; Sabes, D ; Salerno, R ; Sirois, Y ; Thiebaux, C ; Wyslouch, B ; Zabi, A ; Agram, J. L ; Andre, J ; Bloch, D ; Bodin, D ; Brom, J. M ; Cardaci, M ; Chabert, E. C ; Collard, C ; Conte, E ; Drouhin, F ; Ferro, C ; Fontaine, J. C ; Gele, D ; Goerlach, U ; Greder, S ; Juillot, P ; Karim, M ; Le Bihan, A. C ; Mikami, Y ; Van Hove, P ; Fassi, F ; Mercier, D ; Baty, C ; Beauceron, S ; Beaupere, N ; Bedjidian, M ; Bondu, O ; Boudoul, G ; Boumediene, D ; Brun, H ; Chasserat, J ; Chierici, R ; Contardo, D ; Depasse, P ; El Mamouni, H ; Fay, J ; Gascon, S ; Ille, B ; Kurc, T ; Le Grand, T ; Lethuillier, M ; Mirabito, L ; Perries, S ; Sordini, V ; Tosi, S ; Tschudi, Y ; Verdier, P ; Lomidze, D ; Anagnostou, G ; Beranek, S ; Edelhoff, M ; Feld, L ; Heracleous, N ; Hindrichs, O ; Jussen, R ; Klein, K ; Merz, J ; Mohr, N ; Ostapchuk, A ; Perieanu, A ; Raupach, F ; Sammet, J ; Schael, S ; Sprenger, D ; Weber, H ; Weber, M ; Wittmer, B ; At, M ; Dietz Laursonn, E ; Erdmann, M ; Hebbeker, T ; Heidemann, C ; Hinzmann, A ; Hoepfner, K ; Klimkovich, T ; Klingebiel, D ; Kreuzer, P ; Lanske, D ; Lingemann, J ; Magass, C ; Merschmeyer, M ; Meyer, A ; Papacz, P ; Piet, H ; Reithler, H ; Schmitz, S. A ; Sonnenschein, L ; Steggemann, J ; Teyssier, D ; Bontenackels, M ; Davids, M ; Dud, M ; Flügge, G ; Geenen, H ; Giffels, M ; Haj Ahmad, W ; Heydhausen, D ; Hoehle, F ; Kargoll, B ; Kress, T ; Kuessel, Y ; Linn, A ; Nowack, A ; Perchall, L ; Pooth, O ; Rennefeld, J ; Sauerland, P ; Stahl, A ; Tornier, D ; Zoeller, M. H ; Aldaya Martin, M ; Behrenhoff, W ; Behrens, U ; Sharif University of Technology
    Abstract
    Measurements of the jet energy calibration and transverse momentum resolution in CMS are presented, performed with a data sample collected in proton-proton collisions at a centre-of-mass energy of 7TeV, corresponding to an integrated luminosity of 36pb-1. The transverse momentum balance in dijet and γ/Z+jets events is used to measure the jet energy response in the CMS detector, as well as the transverse momentum resolution. The results are presented for three different methods to reconstruct jets: a calorimeter-based approach, the "Jet-Plus-Track" approach, which improves the measurement of calorimeter jets by exploiting the associated tracks, and the "Particle Flow" approach, which attempts... 

    Molecular dynamics study of 'success evaluation' for metallic nanoparticles manipulation on gold substrate

    , Article Micro and Nano Letters ; Volume 5, Issue 5 , 2010 , Pages 286-290 ; 17500443 (ISSN) Mahboobi, S. H ; Meghdari, A ; Jalili, N ; Amiri, F ; Sharif University of Technology
    2010
    Abstract
    One of the key factors in the assembly of nanoparticles and controlled construction of such systems is their positioning by a manipulation system. The response of clusters that are subjected to this process is of great importance. In this study, the behaviour of metallic nanoparticles during the manipulation process on an Au substrate is investigated using molecular dynamics. Two criteria are proposed for the evaluation of success in a pushing process regarding the intactness of a nanoparticle/substrate pair. The effects of cluster material, temperature and manipulation speed on the success of the process are investigated based on the simulation results  

    Formation of traveling liquid bridges between matrix blocks: modeling and simulation

    , Article 1st International Petroleum Conference and Exhibition2009 ; 4 May , 2009 Dejam, M ; Masihi, M ; Sharif University of Technology
    European Association of Geoscientists and Engineers, EAGE  2009
    Abstract
    It is widely accepted that under reservoir conditions there exists some degree of block to block interaction that may result in capillary continuity. The formation of liquid bridges causing capillary continuity between blocks will significantly affect ultimate recovery. In this work a mechanistic model with original thought from hydrology for a given steady feeding volumetric flow rate from an upper block (under both gravity and matrix capillary pressure effects) is developed which considers the formation, growth and detachment of pendant liquid droplets perpendicular to the horizontal fracture (assuming to be smooth and parallel walled) between blocks. The length of detached liquid droplet... 

    Modeling and simulation of graspers force in minimally invasive surgery

    , Article 2009 International Association of Computer Science and Information Technology - Spring Conference, IACSIT-SC 2009, Singapore, 17 April 2009 through 20 April 2009 ; 2009 , Pages 475-479 ; 9780769536538 (ISBN) Hortamani, R ; Zabihollah, A ; Sharif University of Technology
    2009
    Abstract
    In Minimally Invasive Surgery (MIS) the operation is performed through introducing surgery instruments, graspers, scissor into the body. In the present work, a novel smart grasper is presented in which the surgeon can virtually acquire a feeling of force/momentum experienced by the organ/tissue. The smart grasper uses piezoelectric sensors bonded at desired locations to detect the applied force/momentum by surgeon and to measure the transmitted response to the tissue/organ. © 2009 IEEE  

    Comparative study of environmental impact assessment methods along with a new dynamic system-based method

    , Article African Journal of Biotechnology ; Volume 8, Issue 14 , 2009 , Pages 3267-3275 ; 16845315 (ISSN) Nouri, J ; Jassbi, J ; Jafarzadeh, N ; Abbaspour, M ; Varshosaz, K ; Sharif University of Technology
    2009
    Abstract
    Environmental Impacts Assessment has been developed as a critically substantial approach to determine, predict and interpret the ecological impact on the environment, public hygiene and healthy ecosystems. This study aims to introduce and systematically investigate the environmental issues during important decision-making stages. Meanwhile, impacts of development on the environmental components will be also analyzed. This research studies various methods of predicting the environmental changes and determining the impacts through both qualitative and quantitative methods. Qualitative approaches rely fully upon the expert's decisions, while quantitative ones are entirely based on mathematical... 

    Towards a model for inferring trust in heterogeneous social networks

    , Article 2nd Asia International Conference on Modelling and Simulation, AMS 2008, Kuala Lumpur, 13 May 2008 through 15 May 2008 ; 2008 , Pages 52-58 ; 9780769531366 (ISBN) Akhoondi, M ; Habibi, J ; Sayyadi, M ; Sharif University of Technology
    2008
    Abstract
    People usually use trust and reputation to cope with uncertainty which exists in the nature and routines. The existing approaches for inferring trust rely on homogeneous relations. In other words, trust is just inferred by a homogeneous relation. In this paper, we present a new model for inferring trust using heterogeneous social networks; we use relation extraction to make a trust relation from the other relation such as friendship and the college relation and then introduced an algorithm to infer trust using extracted relation. In order to get higher performance, we extend relation extraction problem by proposing a genetic algorithm. This algorithm is more scalable, interpretable and... 

    Numerical modeling of die filling of semi-solid A356 aluminum alloy

    , Article Semi-Solid Processing of Alloys and Composites 10 - Selected, peer reviewed papers from the 10th International Conference on Semi-Solid Processing of Alloy and Composites, S2P 2008, Aachen, 16 September 2008 through 18 September 2008 ; Volume 141-143 , 2008 , Pages 605-610 ; 10120394 (ISSN); 9771012039401 (ISBN) Foroughi, A ; Aashuri, H ; Narimannezhad, A ; Khosravani, A ; Kiani, M ; Sharif University of Technology
    Trans Tech Publications Ltd  2008
    Abstract
    Computer base and simulation technique have been applied for modeling the semi-solid die filling and part of the solidification process of aluminum A356 alloy. A fairly simple one-phase rheological model has been implemented into a fluid flow finite element software Procast, to solve the partial differential equations. This model is purely viscous nature and is implemented in the power law cut-off model of Procast. The constitutive parameters of this model were determined for a rheocast A356 alloy. Using these parameters and comparing the simulation results with experimental data showed good correlation with the model prediction. The designed die for rheocasting was applied for the... 

    A history-dependent stochastic predator-prey model: Chaos and its elimination

    , Article European Physical Journal B ; Volume 13, Issue 3 , 2000 , Pages 601-606 ; 14346028 (ISSN) Gerami, R ; Ejtehadi, M. R ; Sharif University of Technology
    Springer New York  2000
    Abstract
    A non-Markovian stochastic predator-prey model is introduced in which the prey are immobile plants and predators are diffusing herbivors. The model is studied by both mean-field approximation (MFA) and computer simulations. The MFA results a series of bifurcations in the phase space of mean predator and prey densities, leading to a chaotic phase. Because of emerging correlations between the two species distributions, the interaction rate alters and if it is chosen to be the value which is obtained from the simulation, then the chaotic phase disappears  

    Semi-active vibration control of a marine structure with magnetorheological (MR) dampers utilizing LQR method

    , Article Proceedings of the ASME Design Engineering Technical Conference, 15 August 2010 through 18 August 2010 ; Volume 5 , 2010 , Pages 651-659 ; 9780791844137 (ISBN) Daneshfard, M. S ; Zabihollah, A ; Sharif University of Technology
    Abstract
    The developing of technology has discovered new materials which have been applied to improve the performance of structures. The researchers have recently increased the attention in controllable fluids and its applications. Magnetorheological (MR) dampers are devices that employ rheological fluids to modify their mechanical properties. Their mechanical simplicity, high dynamic range, lower power requirements, large force capacity, robustness and safe manner operation in case of fail have made them attractive devices to passive, semi-active and active control in mechatronic, civil, aerospace and automotive applications. The characteristics of the MR damper change when the rheological fluid is... 

    Design of a Diffuser for a Subsonic Wind Tunnel Equipped with Three Axial Fans Using CFD

    , M.Sc. Thesis Sharif University of Technology Saboohi, Zoheir (Author) ; Darbandi, Masoud (Supervisor)
    Abstract
    Nowadays, a wind tunnel is a tool used in aerodynamic research to study the effects of air moving past solid objects. By employing a wind tunnel, we can compeletely control the conditions of aerodynamic testing on specific models. In this research, the design of a diffuser for the subsonic wind tunnel has been taken into account by CFD. The wind tunnel is of suction type and is powered by three axial fans which are manufactured by LTG Inc. The tunnel test section has a 140 cm height and 195cm width which can provide a necessary Mach number. Considering the setting of the three axial fans, located at the end of the diffuser and parallel to each other, it’s necessary to take into consideration... 

    Joint multi-objective master production scheduling and rolling horizon policy analysis in make-to-order supply chains

    , Article International Journal of Production Research ; Vol. 52, issue. 9 , Feb , 2014 , pp. 2767-2787 ; ISSN: 00207543 Nedaei, H ; Mahlooji, H ; Sharif University of Technology
    Abstract
    This research studies multi-objective master production schedule (MPS) and advanced order commitment (AOC) in two-stage supply chains. Simulation-based experimental analysis evaluates the impact of environmental and MPS design factors on schedule cost and instability. The results provide insight into multi-objective MPS design considerations through rolling schedule policies. The study reveals that the manufacturers production smoothness utility coefficient and its interaction with other experimental factors considerably impact on the systems performance. In addition, it introduces a simulation framework with embedded mixed integer programming models that could be used as a framework for... 

    Nonlinear dynamic modeling and simulation of an insect-like flapping wing

    , Article Applied Mechanics and Materials ; Vol. 555, issue , 2014 , p. 3-10 Banazadeh, A ; Taymourtash, N ; Sharif University of Technology
    Abstract
    The main objective of this paper is to present the modeling and simulation of open loop dynamics of a rigid body insect-like flapping wing. The most important aerodynamic mechanisms that explain the nature of the flapping flight, including added mass, rotational lift and delayed stall, are modeled. Wing flapping kinematics is described using appropriate reference frames and three degree of freedom for each wing with respect to the insect body. In order to simulate nonlinear differential equations of motion, 6DOF model of the insect-like flapping wing is developed, followed by an evaluation of the simulation results in hover condition