text:
# zbMATH — the first resource for mathematics

## European Journal of Control

 Short Title: Eur. J. Control Publisher: Elsevier, Amsterdam; European Union Control Association ISSN: 0947-3580; 1435-5671/e Online: http://www.sciencedirect.com/science/journal/09473580http://ejc.revuesonline.com/ Comments: Indexed cover-to-cover
 Documents Indexed: 1,495 Publications (since 1995) References Indexed: 1,419 Publications with 38,088 References.
all top 5

#### Latest Issues

 61 (2021) 60 (2021) 59 (2021) 58 (2021) 57 (2021) 56 (2020) 55 (2020) 54 (2020) 53 (2020) 52 (2020) 51 (2020) 50 (2019) 49 (2019) 48 (2019) 47 (2019) 46 (2019) 45 (2019) 44 (2018) 43 (2018) 42 (2018) 41 (2018) 40 (2018) 39 (2018) 38 (2017) 37 (2017) 36 (2017) 35 (2017) 34 (2017) 33 (2017) 32 (2016) 31 (2016) 30 (2016) 29 (2016) 28 (2016) 27 (2016) 26 (2015) 25 (2015) 24 (2015) 23 (2015) 22 (2015) 21 (2015) 20, No. 6 (2014) 20, No. 5 (2014) 20, No. 4 (2014) 20, No. 3 (2014) 20, No. 2 (2014) 20, No. 1 (2014) 19, No. 6 (2013) 19, No. 5 (2013) 19, No. 4 (2013) 19, No. 3 (2013) 19, No. 2 (2013) 19, No. 1 (2013) 18, No. 6 (2012) 18, No. 5 (2012) 18, No. 4 (2012) 18, No. 3 (2012) 18, No. 2 (2012) 18, No. 1 (2012) 17, No. 5-6 (2011) 17, No. 4 (2011) 17, No. 3 (2011) 17, No. 2 (2011) 17, No. 1 (2011) 16, No. 6 (2010) 16, No. 5 (2010) 16, No. 4 (2010) 16, No. 3 (2010) 16, No. 2 (2010) 16, No. 1 (2010) 15, No. 6 (2009) 15, No. 5 (2009) 15, No. 3-4 (2009) 15, No. 2 (2009) 15, No. 1 (2009) 14, No. 6 (2008) 14, No. 5 (2008) 14, No. 4 (2008) 14, No. 3 (2008) 14, No. 2 (2008) 14, No. 1 (2008) 13, No. 6 (2007) 13, No. 5 (2007) 13, No. 4 (2007) 13, No. 2-3 (2007) 13, No. 1 (2007) 12, No. 6 (2006) 12, No. 5 (2006) 12, No. 4 (2006) 12, No. 3 (2006) 12, No. 2 (2006) 12, No. 1 (2006) 11, No. 6 (2005) 11, No. 4-5 (2005) 11, No. 3 (2005) 11, No. 2 (2005) 11, No. 1 (2005) 10, No. 6 (2004) 10, No. 5 (2004) 10, No. 4 (2004) ...and 39 more Volumes
all top 5

#### Authors

 18 Ortega, Romeo S. 15 Landau, Ioan Doré 8 Camacho, Eduardo Fernández 8 Krstić, Miroslav 7 Darouach, Mohamed 7 Efimov, Denis V. 7 Karimi, Alireza 7 Loria, Antonio 7 Zaccarian, Luca 6 Angeli, David 6 Colaneri, Patrizio 6 Dubljevic, Stevan S. 6 Galeani, Sergio 6 Kotta, Ulle 6 Mareels, Iven M. Y. 6 Morari, Manfred 6 Mosca, Edoardo 6 Ouzahra, Mohamed 6 Peaucelle, Dimitri 6 Pepe, Pierdomenico 6 Saberi, Ali 6 Scherpen, Jacquelien M. A. 6 Sinha, Arpita 6 Stoorvogel, Anton A. 6 Teel, Andrew Richard 6 Willems, Jan Camiel 5 Alamir, Mazen 5 Arzelier, Denis 5 Astolfi, Alessandro 5 Bandyopadhyay, Bijnan 5 Bobtsov, Alexey A. 5 Duan, Guangren 5 Edwards, Christopher 5 Garcia, Germain 5 Hammouri, Hassan 5 Jiang, Zhong-Ping 5 Lampe, Bernhard P. 5 Liu, Guoping 5 Ljung, Lennart 5 Lunze, Jan 5 Lygeros, John 5 Marino, Riccardo 5 Menini, Laura 5 Monaco, Salvatore 5 Normand-Cyrot, Dorothée 5 Postlethwaite, Ian 5 Rosenwasser, Efim N. 5 Savaresi, Sergio M. 5 Swevers, Jan 5 Tarbouriech, Sophie 5 Tornambè, Antonio 5 Tsinias, John 5 Turner, Matthew C. 5 Vivalda, Jean-Claude 5 Zhang, Meirong 5 Zhu, Yuanguo 4 Aranovskiy, Stanislav V. 4 Banavar, Ravi N. 4 Bemporad, Alberto 4 Bittanti, Sergio 4 Bokor, József 4 Bolzern, Paolo 4 Bonvin, Dominique 4 Boukhobza, Taha 4 Brogliato, Bernard 4 Casavola, Alessandro 4 Castellanos Silva, Abraham 4 Chisci, Luigi 4 Daafouz, Jamal 4 De Moor, Bart L. R. 4 De Nicolao, Giuseppe 4 do Valle Costa, Oswaldo Luiz 4 Fradkov, Aleksandr L’vovich 4 Frank, Paul Martin 4 Freiling, Gerhard 4 Fridman, Emilia 4 Germani, Alfredo 4 Geromel, Jose Claudio 4 Gevers, Michel R. 4 Guidorzi, Roberto P. 4 Guo, Bao-Zhu 4 Hagiwara, Tomomichi 4 Henrion, Didier 4 Hjalmarsson, Håkan 4 Jank, Gerhard 4 Johansson, Karl Henrik 4 Karafyllis, Iasson 4 Kinnaert, Michel 4 Kulcsár, Caroline 4 Kulikov, Gennady Yur’evich 4 Lam, James 4 Limon, Daniel 4 Liu, Zhenwei 4 Lobo Pereira, Fernando 4 Maciejowski, Jan M. 4 Mayne, David Q. 4 Mazenc, Frédéric 4 Nešić, Dragan 4 Nuño, Emmanuel 4 Panteley, Elena V. ...and 2,318 more Authors
all top 5

#### Fields

 1,437 Systems theory; control (93-XX) 119 Operations research, mathematical programming (90-XX) 95 Calculus of variations and optimal control; optimization (49-XX) 67 Biology and other natural sciences (92-XX) 65 Computer science (68-XX) 61 Mechanics of particles and systems (70-XX) 37 Ordinary differential equations (34-XX) 36 Probability theory and stochastic processes (60-XX) 33 Partial differential equations (35-XX) 30 Information and communication theory, circuits (94-XX) 28 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 27 General and overarching topics; collections (00-XX) 21 Linear and multilinear algebra; matrix theory (15-XX) 20 Optics, electromagnetic theory (78-XX) 17 Mechanics of deformable solids (74-XX) 16 History and biography (01-XX) 15 Combinatorics (05-XX) 11 Numerical analysis (65-XX) 9 Real functions (26-XX) 9 Operator theory (47-XX) 9 Statistics (62-XX) 8 Dynamical systems and ergodic theory (37-XX) 5 Difference and functional equations (39-XX) 5 Quantum theory (81-XX) 4 Mathematical logic and foundations (03-XX) 4 Fluid mechanics (76-XX) 2 Special functions (33-XX) 2 Classical thermodynamics, heat transfer (80-XX) 2 Geophysics (86-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Integral transforms, operational calculus (44-XX) 1 Functional analysis (46-XX) 1 Global analysis, analysis on manifolds (58-XX)

#### Citations contained in zbMATH Open

779 Publications have been cited 4,162 times in 3,562 Documents Cited by Year
Switched controller synthesis for the quadratic stabilisation of a pair of unstable linear systems. Zbl 0910.93062
Wicks, M.; Peleties, P.; DeCarlo, R.
1998
Adaptive nonlinear tracking with complete compensation of unknown disturbances. Zbl 1047.93550
Nikiforov, V. O.
1998
On the input-to-state stability property. Zbl 1177.93003
Sontag, Eduardo D.
1995
Interconnection and damping assignment passivity-based control: a survey. Zbl 1293.93615
Ortega, Romeo; García-Canseco, Eloísa
2004
Friction models and friction compensation. Zbl 0932.74052
Olsson, H.; Åström, K. J.; Canudas de Wit, C.; Gäfvert, M.; Lischinsky, P.
1998
LMI relaxations in robust control. Zbl 1293.93258
Scherer, C. W.
2006
Discussion on: “Parameter-dependent Lyapunov function approach to stability analysis and design for uncertain systems with time-varying delay”. Zbl 1293.93589
Peaucelle, Dimitri; Gouaisbaut, Frédéric
2005
Open- and closed-loop dissipation inequalities under sampling and controller emulation. Zbl 1293.93388
Laila, Dina S.; Nešić, Dragan; Teel, Andrew R.
2002
Tutorial on Lyapunov-based methods for time-delay systems. Zbl 1403.93158
Fridman, Emilia
2014
Analytical and qualitative model-based fault diagnosis — a survey and some new results. Zbl 0857.93015
Frank, P. M.
1996
Identification of hybrid systems. A tutorial. Zbl 1293.93219
Paoletti, Simone; Juloski, Aleksandar Lj.; Ferrari-Trecate, Giancarlo; Vidal, René
2007
State and output feedback nonlinear model predictive control: an overview. Zbl 1293.93288
Findeisen, Rolf; Imsland, Lars; Allgower, Frank; Foss, Bjarne A.
2003
Passification of non-square linear systems and feedback Yakubovich-Kalman-Popov lemma. Zbl 1293.93377
2003
A tutorial on modern anti-windup design. Zbl 1298.93164
Galeani, Sergio; Tarbouriech, Sophie; Turner, Matthew; Zaccarian, Luca
2009
On linear passive complementarity systems. Zbl 1293.93408
Çamlıbel, M. K.; Heemels, W. P. M. H.; Schumacher, J. M.
2002
On observability and pseudo state estimation of fractional order systems. Zbl 1264.93030
Sabatier, Jocelyn; Farges, Christophe; Merveillaut, Mathieu; Feneteau, Ludovic
2012
Dynamic programming and suboptimal control: a survey from ADP to MPC. Zbl 1293.49056
Bertsekas, Dimitri P.
2005
Control of constrained dynamic systems. Zbl 1293.93299
Mayne, D. Q.
2001
Issues on nonlinear digital control. Zbl 1293.93518
Monaco, S.; Normand-Cyrot, D.
2001
Scalable control of positive systems. Zbl 1360.93072
Rantzer, Anders
2015
Physical damping in IDA-PBC controlled underactuated mechanical systems. Zbl 1293.93679
Gómez-Estern, F.; van der Schaft, A. J.
2004
Identification for control: from the early achievements to the revival of experiment design. Zbl 1293.93206
Gevers, Michel
2005
A comparison of sliding mode and unknown input observers for fault reconstruction. Zbl 1293.93155
Edwards, Christopher; Tan, Chee Pin
2006
Dissipative dynamical systems. Zbl 1293.93035
Willems, Jan C.
2007
On the Noether theorem for optimal control. Zbl 1293.49051
Torres, D. F. M.
2002
Global output stability for systems described by retarded functional differential equations: Lyapunov characterizations. Zbl 1293.93667
Karafyllis, Iasson; Pepe, Pierdomenico; Jiang, Zhong-Ping
2008
The second Euler-Lagrange equation of variational calculus on time scales. Zbl 1248.49024
Bartosiewicz, Zbigniew; Martins, Natália; Torres, Delfim F. M.
2011
Stabilization of networked control systems with data packet dropout and transmission delays: continuous-time case. Zbl 1293.93622
Yu, Mei; Wang, Long; Chu, Tianguang; Hao, Fei
2005
Infinite dimensional backstepping-style feedback transformations for a heat equation with an arbitrary level of instability. Zbl 1293.93404
Balogh, Andras; Krstic, Miroslav
2002
Quantum control and quantum entanglement. Zbl 1293.81023
Ahn, C.; Wiseman, H. M.; Milburn, G. J.
2003
Nonsmooth optimization for multidisk $$H_\infty$$ synthesis. Zbl 1293.93310
Apkarian, Pierre; Noll, Dominikus
2006
Semidefinite programming relaxations and algebraic optimization in control. Zbl 1293.93302
Parrilo, Pablo A.; Lall, Sanjay
2003
Input-to-output stability for systems described by retarded functional differential equations. Zbl 1293.93668
Karafyllis, Iasson; Pepe, Pierdomenico; Jiang, Zhong-Ping
2008
On a small gain theorem for ISS networks in dissipative Lyapunov form. Zbl 1237.93160
Dashkovskiy, Sergey; Ito, Hiroshi; Wirth, Fabian
2011
Delay-dependent $$H_\infty$$ control of uncertain discrete delay systems. Zbl 1293.93672
Fridman, Emilia; Shaked, U.
2005
Sensor networks and cooperative control. Zbl 1293.93069
Cassandras, Christos G.; Li, Wei
2005
Estimating linear time-invariant models of nonlinear time-varying systems. Zbl 1293.93754
Ljung, Lennart
2001
The non-uniform in time small-gain theorem for a wide class of control systems with outputs. Zbl 1293.93629
Karafyllis, Iasson
2004
A spectral quadratic-SDP method with applications to fixed-order $$H_2$$ and $$H_\infty$$ synthesis. Zbl 1293.93324
Apkarian, Pierre; Noll, Dominikus; Thevenet, Jean-Baptiste; Duong Tuan, Hoang
2004
A generic strategy for fault-tolerance in control systems distributed over a network. Zbl 1293.93255
Patton, R. J.; Kambhampati, C.; Casavola, A.; Zhang, P.; Ding, S.; Sauter, D.
2007
An optimal control approach for hybrid systems. Zbl 1293.49059
Riedinger, P.; Iung, C.; Kratz, F.
2003
The zero dynamics of a nonlinear system: from the origin to the latest progresses of a long successful story. Zbl 1293.93666
Isidori, Alberto
2013
Some applications of Hamilton-Jacobi inequalities for classical and impulsive optimal control problems. Zbl 1248.49029
2011
A tutorial on chemical reaction network dynamics. Zbl 1298.92126
Angeli, David
2009
Dynamic sliding mode control for a class of systems with mismatched uncertainty. Zbl 1293.93172
Yan, Xing-Gang; Spurgeon, Sarah K.; Edwards, Christopher
2005
Molecular systems biology and control. Zbl 1293.93571
Sontag, Eduardo D.
2005
Fairness and stability of end-to-end congestion control. Zbl 1293.93689
Kelly, Frank
2003
Modeling, identification and compensation of complex hysteretic nonlinearities: a modified Prandtl-Ishlinskii approach. Zbl 1293.93213
Kuhnen, Klaus
2003
Robust adaptive dynamic programming for linear and nonlinear systems: an overview. Zbl 1293.49053
Jiang, Zhong-Ping; Jiang, Yu
2013
Observer synthesis for a class of nonlinear control systems. Zbl 0864.93018
Besançon, Gildas; Bornard, Guy; Hammouri, Hassan
1996
Advanced tools for nonlinear sampled-data systems’ analysis and control. Zbl 1293.93508
Monaco, Salvatore; Normand-Cyrot, Dorothée
2007
Benchmark on adaptive regulation – rejection of unknown/time-varying multiple narrow band disturbances. Zbl 1293.93453
Landau, Ioan Doré; Castellanos Silva, Abraham; Airimitoaie, Tudor-Bogdan; Buche, Gabriel; Noë, Mathieu
2013
A port-Hamiltonian approach to power network modeling and analysis. Zbl 1293.90007
Fiaz, S.; Zonetti, D.; Ortega, R.; Scherpen, J. M. A.; van der Schaft, A. J.
2013
Stability of stochastic delay hybrid systems with jumps. Zbl 1216.93095
Yuan, Chenggui; Mao, Xuerong
2010
Survey on the state of systems and control. Zbl 1177.93001
Blondel, Vincent; Gevers, Michel; Lindquist, Anders
1995
The complementarity class of hybrid dynamical systems. Zbl 1293.93412
Heemels, W. P. M. H.; Brogliato, B.
2003
Adaptive control design and experiments for LAAS “helicopter” benchmark. Zbl 1293.93444
Fradkov, A. L.; Andrievsky, B.; Peaucelle, D.
2008
Interval observer design for estimation and control of time-delay descriptor systems. Zbl 1360.93122
Efimov, Denis; Polyakov, Andrey; Richard, Jean-Pierre
2015
On active disturbance rejection control for nonlinear systems using time-varying gain. Zbl 1360.93212
Zhao, Zhi-Liang; Guo, Bao-Zhu
2015
Perturbation analysis and optimization of stochastic hybrid systems. Zbl 1216.93092
Cassandras, Christos G.; Wardi, Yorai; Panayiotou, Christos G.; Yao, Chen
2010
Linear and nonlinear system identification using separable least-squares. Zbl 0951.93020
Bruls, J.; Chou, C. T.; Haverkamp, B. R. J.; Verhaegen, M.
1999
Limitations on control system performance. With discussion by O. H. Bosgra, S. Engell and Richard H. Middleton and comments by the author. Zbl 1167.93348
Åström, K. J.
2000
System identification of complex and structured systems. Zbl 1298.93127
2009
Integral sliding mode control for a class of uncertain switched nonlinear systems. Zbl 1291.93077
Lian, Jie; Zhao, Jun; Dimirovski, Georgi M.
2010
Generalized LFT-based representation of parametric uncertain models. Zbl 1293.93333
Hecker, Simon; Varga, Andras
2004
Global tracking control of one degree of freedom Euler-Lagrange systems without velocity measurements. Zbl 0875.93156
Loria, A.
1996
Distributed strategies for generating weight-balanced and doubly stochastic digraphs. Zbl 1291.93290
Gharesifard, Bahman; Cortés, Jorge
2012
Force measurement time-delays and contact instability phenomenon. Zbl 0936.93031
Niculescu, S.-I.; Brogliato, B.
1999
Performance output tracking for one-dimensional wave equation subject to unmatched general disturbance and non-collocated control. Zbl 1380.93216
Zhou, Hua-Cheng; Guo, Bao-Zhu
2018
Control of nonlinear mechanical systems. Zbl 1293.93330
Fantoni, Isabelle; Lozano, Rogelio
2001
State-estimators for chemical reaction networks of Feinberg-Horn-Jackson zero deficiency type. Zbl 1293.93708
2002
Adaptive compensation of disturbances formed as sums of sinusoidal signals with application to an active vibration control benchmark. Zbl 1293.93232
Aranovskiy, Stanislav; Freidovich, Leonid B.
2013
Discussion on: “Robust $$H_\infty$$ control of networked control systems with parameter uncertainty and state-delay”. Zbl 1293.93272
Tipsuwan, Y.
2006
Stability of elastic transmission systems with a local Kelvin-Voigt damping. Zbl 1360.93600
Hassine, Fathi
2015
Min-max model predictive control of nonlinear systems: a unifying overview on stability. Zbl 1298.93291
Raimondo, Davide Martino; Limon, Daniel; Lazar, Mircea; Magni, Lalo; Camacho, Eduardo Fernández
2009
Development and experimental verification of a mobile client-centric networked controlled system. Zbl 1293.93077
Tzes, Anthony; Nikolakopoulos, George; Koutroulis, Ioannis
2005
Anti-windup design for time-delay systems subject to input saturation. An LMI-based approach. Zbl 1293.93678
Gomes da Silva, Joao Manoel jun.; Tarbouriech, Sophie; Garcia, Germain
2006
Multiparametric linear programming with applications to control. Zbl 1293.90039
Jones, C. N.; Barić, M.; Morari, M.
2007
Economic model predictive control with self-tuning terminal cost. Zbl 1293.93301
Müller, Matthias A.; Angeli, David; Allgöwer, Frank
2013
Robust control for Markovian jump delta operator systems with actuator saturation. Zbl 1293.93771
Yang, Hongjiu; Li, Hongbo; Sun, Fuchun; Yuan, Yuan
2014
Stabilization of unstable fixed points of chaotic fractional order systems by a state fractional PI controller. Zbl 1360.93624
2008
Approximate model checking of stochastic hybrid systems. Zbl 1216.93091
Abate, Alessandro; Katoen, Joost-Pieter; Lygeros, John; Prandini, Maria
2010
Optimal traffic light control for a single intersection. Zbl 1078.93557
De Schutter, B.; De Moor, B.
1998
Dwell time analysis of deterministic and stochastic switched systems. Zbl 1298.93126
Colaneri, Patrizio
2009
A state observer for a class of nonlinear systems with multiple discrete and distributed time delays. Zbl 1293.93111
Germani, A.; Pepe, P.
2005
A-ECMS: an adaptive algorithm for hybrid electric vehicle energy management. Zbl 1293.93462
Musardo, Cristian; Rizzoni, Giorgio; Guezennec, Yann; Staccia, Benedetto
2005
Monte Carlo and Las Vegas randomized algorithms for systems and control. An introduction. Zbl 1293.93698
Tempo, Roberto; Ishii, Hideaki
2007
Control design for autonomous vehicles: a dynamic optimization perspective. Zbl 1293.93556
Pereira, Fernando Lobo
2001
Positivity and linear matrix inequalities. Zbl 1293.93596
Genin, Y.; Hachez, Y.; Nesterov, Yu.; Ştefan, R.; Van Dooren, P.; Xu, S.
2002
Hybrid systems modeling and control. Zbl 1293.93421
Morari, Manfred; Baotic, Mato; Borrelli, Francesco
2003
Reconfigurable fault-tolerant control: a tutorial introduction. Zbl 1293.93248
Lunze, J.; Richter, J. H.
2008
Identification of frequency of biased harmonic signal. Zbl 1196.93016
Aranovskiy, Stanislav; Bobtsov, Alexey; Kremlev, Artem; Nikolaev, Nikolay; Slita, Olga
2010
Unified approach to the problem of full decoupling via output feedback. Zbl 1207.93021
Shumsky, Alexey; Zhirabok, Alexey
2010
Triangular systems: A global extension of the Coron-Praly theorem on the existence of feedback-integrator stabilisers. Zbl 0882.93071
Tsinias, J.
1997
Fault detection and isolation for state affine systems. Zbl 0910.93019
Hammouri, H.; Kinnaert, M.; El Yaagoubi, E. H.
1998
Nonlinear and adaptive control in biotechnology: a tutorial. Zbl 1177.93061
Bastin, G.; Van Impe, J. F.
1995
Observer design for continuous-discrete time state affine systems up to output injection. Zbl 1293.93118
Nadri, M.; Hammouri, H.; Astorga, C.
2004
Controlled Lagrangian systems with gyroscopic forcing and dissipation. Zbl 1293.93645
Woolsey, Craig; Reddy, Chevva Konda; Bloch, Anthony M.; Chang, Dong Eui; Leonard, Naomi Ehrich; Marsden, Jerrold E.
2004
Combined adaptive controller for UAV guidance. Zbl 1293.93445
2005
Adaptive learning control for feedback linearizable systems. Zbl 1293.93179
Del Vecchio, D.; Marino, R.; Tomei, P.
2003
Itô-Taylor-based square-root unscented Kalman filtering methods for state estimation in nonlinear continuous-discrete stochastic systems. Zbl 1458.93251
Kulikov, G. Yu.; Kulikova, M. V.
2021
Observer and controller design for a methane bioconversion process. Zbl 1455.93066
De Becker, Kobe; Michiels, Koen; Knoors, Stein; Waldherr, Steffen
2021
Feedforward boundary control of $$2\times 2$$ nonlinear hyperbolic systems with application to Saint-Venant equations. Zbl 1455.93083
Bastin, Georges; Coron, Jean-Michel; Hayat, Amaury
2021
Sliding mode active disturbance rejection control for uncertain nonlinear fractional-order systems. Zbl 1455.93018
Djeghali, Nadia; Bettayeb, Maamar; Djennoune, Said
2021
Asymptotic stability of fractional neutral stochastic systems with variable delays. Zbl 1455.93158
Lu, Ziqiang; Zhu, Yuanguo; Xu, Qinqin
2021
Finite-time decentralized event-triggering non-fragile control for fuzzy neural networks with cyber-attack and energy constraints. Zbl 1455.93175
Kanakalakshmi, S.; Sakthivel, R.; Karthick, S. A.; Leelamani, A.; Parivallal, A.
2021
Sensor fault detection for switched systems using interval observer with $$L_\infty$$ performance. Zbl 1455.93096
Zammali, Chaima; Van Gorp, Jérémy; Wang, Zhenhua; Raïssi, Tarek
2021
Improved robust gain-scheduling static output-feedback control for discrete-time LPV systems. Zbl 1458.93085
Peixoto, Márcia L. C.; Coutinho, Pedro H. S.; Palhares, Reinaldo M.
2021
Learning-based adaptive fault tolerant control for hypersonic flight vehicles with abrupt actuator faults and finite time prescribed tracking performance. Zbl 1458.93144
Zhu, Supeng; Xu, Tao; Wei, Caisheng; Wang, Zheng
2021
Strong structural input and state observability of linear time-invariant systems: graphical conditions and algorithms. Zbl 1458.93037
Garin, Federica; Gracy, Sebin; Kibangou, Alain Y.
2021
An asynchronous distributed and scalable generalized Nash equilibrium seeking algorithm for strongly monotone games. Zbl 1458.91017
Cenedese, Carlo; Belgioioso, Giuseppe; Grammatico, Sergio; Cao, Ming
2021
On unknown input observers designs for discrete-time LPV systems with bounded rates of parameter variation. Zbl 1458.93093
de Oliveira, Matheus Senna; Pereira, Renan Lima
2021
Periodic and homoclinic solutions of discontinuous Cohen-Grossberg neural networks with time-varying delays. Zbl 1466.93131
Kong, Fanchao; Zhu, Quanxin; Aouiti, Chaouki; Dridi, Farah
2021
Novel results on observer-based control of one-sided Lipschitz systems under input saturation. Zbl 1447.93127
2020
An exact $$l_1$$ penalty function method for multi-dimensional first-order PDE constrained control optimization problem. Zbl 1440.93109
Jayswal, Anurag; Preeti
2020
New results on stability analysis for a kind of neutral singular systems with mixed delays. Zbl 1447.93293
Chen, Wen-bin; Gao, Fang
2020
On a modified optimal control problem with first-order PDE constraints and the associated saddle-point optimality criterion. Zbl 07160400
Treanţă, Savin
2020
A state augmentation approach to interval fault estimation for descriptor systems. Zbl 1429.93378
Zhang, Wenhan; Wang, Zhenhua; Raïssi, Tarek; Wang, Ye; Shen, Yi
2020
Indirect adaptive fuzzy control of nonlinear descriptor systems. Zbl 1429.93199
Fakhr Shamloo, Naeimeh; Akbarzadeh Kalat, Ali; Chisci, Luigi
2020
A practical solution for the control of time-delayed and delay-free systems with saturating actuators. Zbl 1429.93268
Lima, Thiago A.; de Almeida Filho, Magno P.; Torrico, Bismark C.; Nogueira, Fabrício G.; Correia, Wilkley B.
2020
Robust prescribed performance control for Euler-Lagrange systems with practically finite-time stability. Zbl 1431.93054
Yin, Zeyang; Luo, Jianjun; Wei, Caisheng
2020
Robust exact filtering differentiators. Zbl 1451.93391
Levant, Arie; Livne, Miki
2020
Fast-convergent fault detection and isolation in a class of nonlinear uncertain systems. Zbl 1451.93181
Li, Peng; Boem, Francesca; Pin, Gilberto
2020
Eigenvalue assignment enabled control law for multivariable nonlinear systems with mismatched uncertainties. Zbl 1455.93071
Ma, Tong
2020
Finite time consensus of nonlinear multi-agent systems in the presence of communication time delays. Zbl 1447.93328
2020
A class of predefined-time controllers for uncertain second-order systems. Zbl 1447.93046
Sánchez-Torres, Juan Diego; Muñoz-Vázquez, Aldo Jonathan; Defoort, Michael; Jiménez-Rodríguez, Esteban; Loukianov, Alexander G.
2020
Uniformly semiglobally exponential stability of vector field guidance law and autopilot for path-following. Zbl 1447.93303
Xu, Haitong; Fossen, Thor I.; Guedes Soares, Carlos
2020
Optimal adaptive neural PI full-order sliding mode control for robust fault tolerant control of uncertain nonlinear system. Zbl 1447.93048
Van, Mien; Do, Xuan Phu
2020
Squared-down passivity-based $$H_\infty$$ and $$H_2$$ almost synchronization of homogeneous continuous-time multi-agent systems with partial-state coupling via static protocol. Zbl 1447.93336
Stoorvogel, Anton A.; Nojavanzadeh, Donya; Liu, Zhenwei; Saberi, Ali
2020
A fuzzy system based active set algorithm for the numerical solution of the optimal control problem governed by partial differential equation. Zbl 1447.93193
Azizi, Masoomeh; Amirfakhrian, Majid; Araghi, Mohammad Ali Fariborzi
2020
On generation of virtual outputs via signal injection: application to observer design for electromechanical systems. Zbl 1447.93129
Yi, Bowen; Ortega, Romeo; Siguerdidjane, Houria; Machado, Juan E.; Zhang, Weidong
2020
Discrete-time sliding mode protocols for leader-following consensus of discrete multi-agent system with switching graph topology. Zbl 1429.93053
Patel, Keyurkumar; Mehta, Axaykumar
2020
Intelligent fuzzy sliding mode control for complex robot system with disturbances. Zbl 1429.93211
Zheng, Kunming; Hu, Youmin; Wu, Bo
2020
Fractional order controllers for throughput and product quality control in a grinding mill circuit. Zbl 1429.93169
Aguila-Camacho, Norelys; Duarte-Mermoud, Manuel A.; Orchard, Marcos E.
2020
One-step ahead robust MPC for LPV model with bounded disturbance. Zbl 1431.93021
Hu, Jianchen; Ding, Baocang
2020
Prescribed-time estimation and output regulation of the linearized Schrödinger equation by backstepping. Zbl 1451.93172
Steeves, Drew; Krstic, Miroslav; Vazquez, Rafael
2020
Fixed-time estimation of parameters for non-persistent excitation. Zbl 1451.93334
Wang, Jian; Efimov, Denis; Aranovskiy, Stanislav; Bobtsov, Alexey A.
2020
Multi-target identity management with decentralized optimal sensor scheduling. Zbl 1455.93007
Zhang, Chiyu; Hwang, Inseok
2020
Robust filtered Smith predictor for processes with time-varying delay: a simplified stability approach. Zbl 1455.93148
Franklin, Taniel S.; Santos, Tito L. M.
2020
A general approach for designing the MWGS-based information-form Kalman filtering methods. Zbl 1455.93199
Tsyganova, Julia V.; Kulikova, Maria V.; Tsyganov, Andrey V.
2020
Regular path-constrained time-optimal control problems in three-dimensional flow fields. Zbl 1455.93081
Chertovskih, R.; Karamzin, D.; Khalil, N. T.; Lobo Pereira, F.
2020
A new design method for observer-based control of nonlinear fractional-order systems with time-variable delay. Zbl 1455.93060
Phat, Vu; Niamsup, Piyapong; Thuan, Mai V.
2020
Fault detection and isolation of gas turbine engine using inversion-based and optimal state observers. Zbl 1455.93067
2020
Discrete-time event-triggered higher order sliding mode control for consensus of 2-DOF robotic arms. Zbl 1455.93025
Patel, Keyurkumar; Mehta, Axaykumar
2020
Event-triggered sliding mode based consensus tracking in second order heterogeneous nonlinear multi-agent systems. Zbl 1405.93062
Mishra, Rajiv Kumar; Sinha, Abhinav
2019
Parametric control to a type of quasi-linear high-order systems via output feedback. Zbl 1412.93034
Gu, Da-Ke; Zhang, Da-Wei; Duan, Guang-Ren
2019
Event-triggered control of discrete-time 2-D switched Fornasini-Marchesini systems. Zbl 1415.93173
Yang, Rongni; Yu, Yaru
2019
Adaptive hierarchical formation control for uncertain Euler-Lagrange systems using distributed inverse dynamics. Zbl 1415.93148
Rosa, Muhammad Ridho; Baldi, Simone; Wang, Ximan; Lv, Maolong; Yu, Wenwu
2019
Event-triggered fault tolerant control for spacecraft formation attitude synchronization with limited data communication. Zbl 1415.93241
Yi, Hang; Liu, Ming; Li, Min
2019
Robust control of parabolic stochastic partial differential equations under model uncertainty. Zbl 1412.93026
Baltas, Ioannis; Xepapadeas, Anastasios; Yannacopoulos, Athanasios N.
2019
Tube-based robust output feedback MPC for constrained LTV systems with applications in chemical processes. Zbl 1412.93070
2019
Observer-based guaranteed cost control of cyber-physical systems under DoS jamming attacks. Zbl 1415.93042
Wang, Mufeng; Xu, Bugong
2019
Fuzzy sliding mode control with state estimation for velocity control system of hydraulic cylinder using a new hydraulic transformer. Zbl 1415.93162
Shen, Wei; Wang, Jiehao; Huang, Honglei; He, Junyi
2019
Observer-based state-feedback control design for LPV periodic discrete-time systems. Zbl 1418.93094
Agulhari, Cristiano M.; Lacerda, Márcio J.
2019
Robust observer-based sliding mode control for nonlinear uncertain singular systems with time-varying delay and input non-linearity. Zbl 1418.93070
2019
Computational method for estimating the domain of attraction of discrete-time uncertain rational systems. Zbl 1418.93090
Polcz, Péter; Péni, Tamás; Szederkényi, Gábor
2019
Analysis and behavior control of a modified singular prey-predator model. Zbl 1418.92085
Babaei, Behnam; Shafiee, Masoud
2019
Long baseline navigation with explicit pseudo-range clock offset and propagation speed estimation. Zbl 1418.93257
Batista, Pedro
2019
Model reduction of synchronized homogeneous Lur’e networks with incrementally sector-bounded nonlinearities. Zbl 1425.93060
Cheng, Xiaodong; Scherpen, Jacquelien M. A.; Zhang, Fan
2019
Performance boundary output tracking for a wave equation with control unmatched disturbance. Zbl 1425.93132
Jin, Feng-Fei; Guo, Bao-Zhu
2019
State and output feedback control for constrained discrete-time nonlinear systems. Zbl 1425.93111
Moussaoui, Lotfi; Aouaouda, Sabrina; Chadli, Mohammed; Bouhali, Omar; Righi, Ines
2019
Near-optimal control for a singularly perturbed linear stochastic singular system with Markovian jumping parameters. Zbl 1425.93305
Ren, Guoqiang; Liu, Bin
2019
Circulation algorithm for partial eigenstructure assignment via state feedback. Zbl 1425.93104
Duan, Guang-Ren
2019
Mixed therapy in cancer treatment for personalized drug administration using model reference adaptive control. Zbl 1425.92104
Babaei, Naser; Salamci, Metin U.
2019
Infinite horizon optimal control of mean-field forward-backward delayed systems with Poisson jumps. Zbl 1412.93096
Ma, Heping
2019
A switched and scheduled design for model recovery anti-windup of linear plants. Zbl 1412.93041
Cristofaro, Andrea; Galeani, Sergio; Onori, Simona; Zaccarian, Luca
2019
Solvability conditions and design for $$H_\infty$$ & $$H_2$$ almost state synchronization of homogeneous multi-agent systems. Zbl 1412.93032
Stoorvogel, Anton A.; Saberi, Ali; Zhang, Meirong; Liu, Zhenwei
2019
Aerial monitoring of slow moving convoys using elliptical orbits. Zbl 1412.93004
Borkar, Aseem V.; Borkar, Vivek S.; Sinha, Arpita
2019
A linear quadratic model based on multistage uncertain random systems. Zbl 1412.93049
Chen, Xin; Zhu, Yuanguo; Li, Bo; Yan, Hongyan
2019
Iterative method for estimating the robust domains of attraction of non-linear systems: application to cancer chemotherapy model with parametric uncertainties. Zbl 1412.93038
Riah, Rachid; Fiacchini, Mirko; Alamir, Mazen
2019
Event-triggered robust cooperative stabilization in nonlinearly interconnected multiagent systems. Zbl 1415.93194
Rezaei, Vahid; Stefanovic, Margareta
2019
Design of event-triggered sliding mode controller based on reaching law with time varying event generation approach. Zbl 1415.93078
Yesmin, Asifa; Bera, Manas Kumar
2019
Quasi-time-dependent asynchronous $$\mathcal{H}_\infty$$ control of discrete-time switched systems with mode-dependent persistent dwell-time. Zbl 1415.93218
Liu, Tianhe; Wang, Changhong
2019
Decentralized abstractions for multi-agent systems under coupled constraints. Zbl 1405.93012
Boskos, Dimitris; Dimarogonas, Dimos V.
2019
Performance output tracking for one-dimensional wave equation subject to unmatched general disturbance and non-collocated control. Zbl 1380.93216
Zhou, Hua-Cheng; Guo, Bao-Zhu
2018
On generalized KT-pseudoinvex control problems involving multiple integral functionals. Zbl 1402.49020
Treanţă, Savin; Arana-Jiménez, Manuel
2018
Robust interval observer for switched systems with unknown inputs: application to vehicle dynamics estimation. Zbl 1403.93110
Ifqir, Sara; Ichalal, Dalil; Ait Oufroukh, Naima; Mammar, Said
2018
Interval observers for global feedback control of nonlinear systems with robustness with respect to disturbances. Zbl 1380.93066
Ito, Hiroshi; Dinh, Thach Ngoc
2018
Guaranteed cost control for uncertain nonlinear systems with mixed time-delays: the discrete-time case. Zbl 1403.93123
Shen, Bo; Wang, Zidong; Tan, Hailong
2018
$$H_\infty$$ fault detection filter design for discrete-time nonlinear Markovian jump systems with missing measurements. Zbl 1403.93086
Li, Yueyang; Karimi, Hamid Reza; Zhao, Dong; Xu, Yuan; Zhao, Ping
2018
Stabilization of linear impulsive systems under dwell-time constraints: interval observer-based framework. Zbl 1403.93049
Degue, Kwassi H.; Efimov, Denis; Richard, Jean-Pierre
2018
Optimal switching control for drug therapy process in cancer chemotherapy. Zbl 1403.92110
Wu, Xiang; Liu, Qiaodan; Zhang, Kanjian; Cheng, Ming; Xin, Xin
2018
Relaxing the high-frequency gain sign assumption in direct model reference adaptive control. Zbl 1402.93154
Gerasimov, Dmitry N.; Ortega, Romeo.; Nikiforov, Vladimir O.
2018
Robust observer-based control designs for discrete nonlinear systems with disturbances. Zbl 1403.93051
Nguyen, Cuong M.; Pathirana, Pubudu N.; Trinh, Hieu
2018
Optimistic value model of multidimensional uncertain optimal control with jump. Zbl 1380.93286
Deng, Liubao; You, Zhiqiang; Chen, Yuefen
2018
A robust $$\delta$$-persistently exciting controller for leader-follower tracking-agreement of multiple vehicles. Zbl 1403.93020
Maghenem, Mohamed; Loria, Antonio; Panteley, Elena
2018
Bounded backstepping control and robustness analysis for time-varying systems under converging-input-converging-state conditions. Zbl 1403.93168
Mazenc, Frédéric; Malisoff, Michael; Burlion, Laurent; Weston, Jerome
2018
Attitude tracking with an adaptive sliding mode response to reaction wheel failure. Zbl 1403.93113
Bai, Yuliang; Biggs, James D.; Wang, Xiaogang; Cui, Naigang
2018
Robust nonovershooting tracking controller for descriptor systems. Zbl 1402.93097
Babu, Praveen S.; Xavier, Nithin; Bandyopadhyay, Bijnan
2018
Stabilization of the wave equation with moving boundary. Zbl 1379.35169
Ammari, Kaïs; Bchatnia, Ahmed; El Mufti, Karim
2018
Networked non-fragile $$H_\infty$$ static output feedback control design for vehicle dynamics stability: a descriptor approach. Zbl 1403.93085
Latrech, Chedia; Kchaou, Mourad; Guéguen, Hervé
2018
Stability of switched linear systems with possible Zeno behavior: a polytopic approach. Zbl 1403.93174
2018
Autonomous collision avoidance for wheeled mobile robots using a differential game approach. Zbl 1403.93142
Mylvaganam, Thulasi; Sassano, Mario
2018
Local null controllability of the control-affine nonlinear systems with time-varying disturbances. Zbl 1403.93047
Vrabel, Robert
2018
A relaxation approach to optimal control of Volterra integral equations. Zbl 06921145
Coletsos, John
2018
Almost-global tracking for a rigid body with internal rotors. Zbl 1403.93143
Nayak, Aradhana; Banavar, Ravi N.; Maithripala, Diogu Hennedige Sanjeeva
2018
H$$_\infty$$ generalized dynamic unknown inputs observer design for discrete LPV systems. Application to wind turbine. Zbl 1403.93087
Pérez-Estrada, Abraham-Jashiel; Osorio-Gordillo, Gloria-Lilia; Alma, Marouane; Darouach, Mohamed; Olivares-Peregrino, Víctor-Hugo
2018
A sequential LMI approach to design a BMI-based multi-objective nonlinear observer. Zbl 1403.93054
Wang, Yan; Zemouche, Ali; Rajamani, Rajesh
2018
Sliding mode observer design for fault and disturbance estimation using Takagi-Sugeno model. Zbl 1403.93066
Li, Shanzhi; Wang, Haoping; Aitouche, Abdel; Christov, Nicolai
2018
Passivity based state synchronization of homogeneous discrete-time multi-agent systems via static protocol in the presence of input delay. Zbl 1390.93055
Liu, Zhenwei; Zhang, Meirong; Saberi, Ali; Stoorvogel, Anton A.
2018
...and 679 more Documents
all top 5

#### Cited by 5,370 Authors

 42 Ortega, Romeo S. 28 Jiang, Zhong-Ping 28 Karafyllis, Iasson 23 Pepe, Pierdomenico 20 Fradkov, Aleksandr L’vovich 20 Fridman, Emilia 19 Kotta, Ulle 19 Krstić, Miroslav 19 Lam, James 18 Astolfi, Alessandro 17 Hjalmarsson, Håkan 17 Noll, Dominikus 17 Xu, Shengyuan 16 Efimov, Denis V. 16 Mazenc, Frédéric 15 Apkarian, Pierre 15 Bobtsov, Alexey A. 15 Edwards, Christopher 15 Huang, Jie 15 Tan, Chee Pin 14 Loria, Antonio 14 Petersen, Ian Richard 14 Pyrkin, Anton A. 14 Tarbouriech, Sophie 14 Tomei, Patrizio 14 Torres, Delfim Fernando Marado 14 Trinh, Hieu Minh 13 Brogliato, Bernard 13 Nešić, Dragan 13 Raissi, Tarek 13 Shi, Peng 12 Ahmed-Ali, Tarek 12 De Schutter, Bart 12 van der Schaft, Arjan J. 12 Verrelli, Cristiano Maria 12 Zhirabok, Alexey N. 11 Allgower, Frank 11 Cassandras, Christos G. 11 Colaneri, Patrizio 11 Espinosa-Pérez, Gerardo 11 Hagiwara, Tomomichi 11 Heemels, W. P. Maurice H. 11 Kulikov, Gennady Yur’evich 11 Landau, Ioan Doré 11 Peaucelle, Dimitri 11 Szederkényi, Gábor 11 Turner, Matthew C. 11 van de Wouw, Nathan 11 Zaccarian, Luca 10 Abate, Alessandro 10 Arana-Jiménez, Manuel 10 Daafouz, Jamal 10 Isidori, Alberto 10 Martins, Natália F. 10 Mayne, David Q. 10 Scherer, Carsten W. 10 van Schuppen, Jan H. 10 Wang, Long 10 Wang, Zidong 10 Zhang, Qingling 10 Zhong, Shou-Ming 9 Bolzern, Paolo 9 Christofides, Panagiotis D. 9 Feng, Gang 9 Geromel, Jose Claudio 9 Grüne, Lars 9 Han, Qinglong 9 Jiang, Bin 9 Ljung, Lennart 9 Marino, Riccardo 9 Morari, Manfred 9 Nijmeijer, Henk 9 Ouzahra, Mohamed 9 Panteley, Elena V. 9 Pietrabissa, Antonio 9 Prieur, Christophe 9 Rehan, Muhammad 9 Schiffer, Johannes 9 Su, Hongye 9 Teel, Andrew Richard 9 Van den Hof, Paul M. J. 9 Yang, Jung-Min 9 Zhou, Tong 9 Zhu, Yuanguo 8 Álamo, Teodoro 8 Anderson, Brian David Outram 8 Andrievskiĭ, Boris Rostislavich 8 Besançon, Gildas 8 Camlibel, M. Kanat 8 Fridman, Leonid M. 8 Gao, Huijun 8 Giri, Fouad 8 Huang, Ming 8 Kaldmäe, Arvo 8 Karimi, Alireza 8 Komenda, Jan 8 Lamnabhi-Lagarrigue, Françoise 8 Liu, Xinzhi 8 Mahmoud, Magdi Sadik Mostafa 8 Moreno, Jaime A. ...and 5,270 more Authors
all top 5

#### Cited in 288 Journals

 685 Automatica 379 European Journal of Control 277 International Journal of Control 237 Systems & Control Letters 173 Journal of the Franklin Institute 157 International Journal of Robust and Nonlinear Control 81 International Journal of Adaptive Control and Signal Processing 74 Asian Journal of Control 65 Mathematical Problems in Engineering 62 Applied Mathematics and Computation 60 Nonlinear Analysis. Hybrid Systems 59 Nonlinear Dynamics 46 Automation and Remote Control 43 SIAM Journal on Control and Optimization 39 International Journal of Systems Science. Principles and Applications of Systems and Integration 35 International Journal of Applied Mathematics and Computer Science 28 International Journal of Systems Science 25 Journal of Mathematical Analysis and Applications 21 Journal of Optimization Theory and Applications 21 Circuits, Systems, and Signal Processing 20 Optimal Control Applications & Methods 20 Linear Algebra and its Applications 18 Information Sciences 18 Journal of Systems Science and Complexity 17 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 17 Discrete Event Dynamic Systems 16 International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 15 Fuzzy Sets and Systems 15 Journal of Computational and Applied Mathematics 15 European Series in Applied and Industrial Mathematics (ESAIM): Control, Optimization and Calculus of Variations 14 European Journal of Operational Research 13 MCSS. Mathematics of Control, Signals, and Systems 13 Mathematical Programming. Series A. Series B 13 Complexity 12 Kybernetika 12 Applied Mathematics Letters 12 Multidimensional Systems and Signal Processing 12 Journal of Vibration and Control 12 Abstract and Applied Analysis 12 Communications in Nonlinear Science and Numerical Simulation 11 Chaos, Solitons and Fractals 11 Applied Mathematical Modelling 10 Journal of Global Optimization 10 Journal of Control Theory and Applications 10 Journal of Control Science and Engineering 9 Discrete Dynamics in Nature and Society 9 Control Theory and Technology 8 Journal of Mathematical Physics 8 Formal Methods in System Design 8 Multibody System Dynamics 7 Journal of Differential Equations 7 Numerical Functional Analysis and Optimization 7 Theoretical Computer Science 7 Fractional Calculus & Applied Analysis 7 Discrete and Continuous Dynamical Systems. Series B 7 Advances in Difference Equations 7 Journal of Industrial and Management Optimization 6 Acta Mechanica 6 Applicable Analysis 6 Computers & Mathematics with Applications 6 Applied Mathematics and Optimization 6 Mathematics and Computers in Simulation 6 Optimization 6 SIAM Journal on Optimization 6 Journal of Nonlinear Science 6 Journal of Computer and Systems Sciences International 6 SIAM Journal on Scientific Computing 6 Discrete and Continuous Dynamical Systems 6 Journal of Mathematical Chemistry 6 SIAM Journal on Applied Dynamical Systems 6 Numerical Algebra, Control and Optimization 5 Mathematical and Computer Modelling 5 Computational Optimization and Applications 5 Computational and Applied Mathematics 5 Chaos 5 Nonlinear Analysis. Real World Applications 5 Journal of Applied Mathematics 5 Mathematical Biosciences and Engineering 5 Set-Valued and Variational Analysis 5 Symmetry 5 Mathematical Control and Related Fields 4 Journal of Mathematical Biology 4 Meccanica 4 Physica D 4 SIAM Review 4 Journal of Mathematical Sciences (New York) 4 Journal of Applied Mathematics and Computing 4 Science in China. Series F 4 Proceedings of the Steklov Institute of Mathematics 4 Optimization Letters 4 Proceedings of the Estonian Academy of Sciences 4 Algorithms 4 Science China. Information Sciences 4 Evolution Equations and Control Theory 4 Journal of Mathematics 3 Statistics & Probability Letters 3 Stochastic Analysis and Applications 3 Acta Applicandae Mathematicae 3 International Journal of Production Research 3 Information and Computation ...and 188 more Journals
all top 5

#### Cited in 46 Fields

 3,021 Systems theory; control (93-XX) 342 Operations research, mathematical programming (90-XX) 298 Ordinary differential equations (34-XX) 295 Calculus of variations and optimal control; optimization (49-XX) 185 Mechanics of particles and systems (70-XX) 172 Computer science (68-XX) 142 Biology and other natural sciences (92-XX) 139 Probability theory and stochastic processes (60-XX) 110 Partial differential equations (35-XX) 103 Numerical analysis (65-XX) 90 Information and communication theory, circuits (94-XX) 89 Dynamical systems and ergodic theory (37-XX) 73 Linear and multilinear algebra; matrix theory (15-XX) 66 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 43 Mechanics of deformable solids (74-XX) 38 Real functions (26-XX) 33 Statistics (62-XX) 29 Operator theory (47-XX) 29 Quantum theory (81-XX) 26 Combinatorics (05-XX) 22 Difference and functional equations (39-XX) 19 Optics, electromagnetic theory (78-XX) 15 Classical thermodynamics, heat transfer (80-XX) 14 Fluid mechanics (76-XX) 10 Mathematical logic and foundations (03-XX) 7 History and biography (01-XX) 7 Integral equations (45-XX) 6 General and overarching topics; collections (00-XX) 6 Statistical mechanics, structure of matter (82-XX) 5 Differential geometry (53-XX) 5 Global analysis, analysis on manifolds (58-XX) 4 Functional analysis (46-XX) 4 Convex and discrete geometry (52-XX) 3 Algebraic geometry (14-XX) 3 Category theory; homological algebra (18-XX) 3 Topological groups, Lie groups (22-XX) 3 Approximations and expansions (41-XX) 3 Integral transforms, operational calculus (44-XX) 3 Relativity and gravitational theory (83-XX) 1 Number theory (11-XX) 1 Field theory and polynomials (12-XX) 1 Functions of a complex variable (30-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Special functions (33-XX) 1 General topology (54-XX) 1 Mathematics education (97-XX)


text:
# Thread: Solving This Indefinite Integral

1. ## Solving This Indefinite Integral

It's the integral of sin(5t)/(1+(cos(5t))^2), it seems like there's no plausible substitutions or anything that can be made here, could someone clue me in as to what to do about this problem?

2. Originally Posted by fattydq
It's the integral of sin(5t)/(1+(cos(5t))^2), it seems like there's no plausible substitutions or anything that can be made here, could someone clue me in as to what to do about this problem?
$u = \cos(5t)$

integral will be a form of arctangent.

format: plain


text:
19 بهمن 1401

# محسن نژاد اصغر

مرتبه علمی: دانشیار
نشانی: گروه فیزیک دانشگاه مازندران
تحصیلات: دکترای تخصصی / فیزیک
تلفن: 09355892196
دانشکده: دانشکده علوم پایه

## مشخصات پژوهش

 عنوان Non-isothermal effects on the static equilibria of magnetized layers of molecular clouds نوع پژوهش مقاله چاپ شده کلیدواژه‌ها ISM: structure -- ISM: clouds -- ISM: magnetic fields -- stars: formation -- (Galaxy:) local interstellar matter مجله Bulgarian Astronomical Journal شناسه DOI — پژوهشگران a { color: #4f98b0; } a:hover { color: #ffab00; } a:link:visited { text-decoration: none; } ناهید بهمنی (نفر اول) ، محسن نژاد اصغر (نفر دوم)

## چکیده

The molecular gases in the interstellar medium are observed as Giant Molecular Clouds, isolated Bok globules and/or Infrared Dark clouds. The substructure of the molecular clouds have complex morphologies from layers to filaments and spheres. On the other hand, the molecular clouds are affected by the heating and cooling mechanisms. Nejad-Asghar~(2019) showed that by consideration of the heating due to ambipolar diffusion in the molecular clouds, the local thermal balance leads to a local loosely constrained power-law relation between the pressure and density as $P \propto \rho^{1+\chi}$, where $-0.4\leq \chi\leq 0.05$ depends on the functional form of the net cooling function. Physically, the value of $\chi$ depends on the power of dependence of magnetic field to the density, and also on the value of magnetic field gradient. For strong magnetic field and/or large field gradient, the value of $\chi$ decreases, and vice versa. For simplicity, here, we use stratified layer approximation to investigate the effect of the non-isothermal parameter $\chi$ on the substructure of the molecular clouds. The results show that considering the non-isothermal equation of state with smaller $\chi$ (i.e., stronger magnetic field and/or larger field gradient) will transfer the magnetic field lines to the outer cloud regions, and hence will decrease the density in the central regions of the cloud. We conclude that the stronger magnetic field and/or larger field gradient can disperse the density fluctuations through the molecular clouds.


text:
Satisfy vs Fulfill - What's the difference?

satisfy | fulfill |

As verbs the difference between satisfy and fulfill

is that satisfy is to do enough; to meet (needs); to fulfill (wishes, requirements) while fulfill is (archaic) to fill full; fill to the utmost capacity; fill up.

satisfy

English

Verb

(en-verb)
• To do enough for; to meet the needs of; to fulfill the wishes or requirements of.
• I'm not satisfied with the quality of the food here.
• * Milton
• Death shall with us two / Be forced to satisfy his ravenous maw.
• To cause (a sentence) to be true when the sentence is interpreted in one's universe.
• The complex numbers satisfy $\exists x:x^2+1=0$.
• (dated, literary, transitive) To convince by ascertaining; to free from doubt.
• * Atterbury
• The standing evidences of the truth of the gospel are in themselves most firm, solid, and satisfying .
• * 1851 ,
• I was resolved to satisfy myself whether this ragged Elijah was really dogging us or not, and with that intent crossed the way with Queequeg, and on that side of it retraced our steps.
• To pay to the extent of what is claimed or due.
• to satisfy a creditor
• To answer or discharge (a claim, debt, legal demand, etc.); to give compensation for.
• to satisfy a claim or an execution

* (l) * (l)

fulfill

English

* (UK)

Verb

(en verb)
• (archaic) To fill full; fill to the utmost capacity; fill up.
• To satisfy, carry out, bring to completion (an obligation, a requirement, etc.).
• To emotionally or artistically satisfy; to develop one's gifts to the fullest.
• To obey, follow, comply with (a rule, requirement etc.).
• Derived terms

* fulfilled * fulfilling * fulfillable * fulfillment


text:
# Homework Help: Poission Bracket of Angular Momentum

1. Mar 23, 2008

### cstalg

1. The problem statement, all variables and given/known data
Parts vii and viii of problem 2 of the attached file "hw5.pdf". It's too long and I'm too lazy to type it here.

2. Relevant equations
A useful equality of Levi-Civita symbol:

$\epsilon_{ijk}\epsilon_{i'j'k}=\delta_{ii'}\delta_{jj'} - \delta_{ij'}\delta_{ji'}$

3. The attempt at a solution
I calculated the Poission brackets of those two expressions and none of them satisfies the definition of a rank two tensor given in the problem, although they are tensors according to the usual definition. The file "solutions5.pdf" contains the solution by the instructor or TAs. But I think the last equality of the proof of "fact 4" is incorrect: How can the following expression holds?

$-\delta_{ji}f_k + \delta_{ki}f_j = \epsilon_{ijk}f_i$

If this is wrong, the solutions of parts vii and viii will be meaningless.

In quantum mechanics, scalars and vectors are defined using commutators $[L_i, V_j]=i\hbar\epsilon_{ijk}V_k$, exactly the same algebra as in our problem. But no one defines Cartesian tensors using commutators/Poission brackets. I think Cartesian rank-two tensors could not be defined by simply generalizing the definition of a vector like in this problem.

#### Attached Files:

File size:
59.6 KB
Views:
95
• ###### solutions5.pdf
File size:
73 KB
Views:
89
Last edited: Mar 24, 2008


text:
# Clifford Algebra and Gamma matrices: is this relation generally true for any dimension?

I expect the following relation to be vanishing. But it seems not that obvious.

$\Gamma_{ab}^{\lambda}t^at^b \Gamma_{\lambda c(d)}t^c=0$

where $t^a$ are even ghosts, "$ab$" are indices for matrix element, and $\lambda$ denote different Gamma matrices. The Einstein summation convention is used above, i.e. we will sum over all indices except $d$.

I checked for both 3D and 4D Clifford algebra. The relation above seems to be right. But not sure whether it is generally true.

Does the following equation also vanishes?

$\Gamma_{\lambda a b}t^a t^b C^{\lambda} C^{\alpha}C^{\beta}=0$

where $C^{\lambda}$ are odd ghosts, i.e. $C^{\alpha}C^{\beta}=-C^{\beta}C^{\alpha}$.

The left hand side of the equation above is supposed to be something in $\wedge^2 V$, where $V=\{ C^{\lambda}|\lambda=1,2,\cdots,D \}$. $D$ is the dimension of the space.

-
I question some of the tags. I think that the first and third are appropriate, but not the others. If my answer is indeed correct, the division-algebras might also be appropriate. – José Figueroa-O'Farrill Nov 3 '10 at 1:37
retagged. ${ }$ – userN Nov 3 '10 at 2:40
Thank you for that. – José Figueroa-O'Farrill Nov 3 '10 at 12:06
@Osiris: Would it be possible to add some words of context? Where do you meet/need this identity, if different from supersymmetric Yang-Mills? – José Figueroa-O'Farrill Nov 3 '10 at 12:07
@José: Thanks a lot. Yes, that's what I really want. It is for SUSY Yang-Mills. – Osiris Nov 3 '10 at 22:50

It's not clear to me what you mean by "even ghosts". Do you mean perhaps that $t^a t^b = t^b t^a$?
It is no accident that those dimensions are 2 plus the dimensions of the real division algebras: $\mathbb{R}$, $\mathbb{C}$, $\mathbb{H}$ and $\mathbb{O}$. In fact, the identities are well-known identities for these algebras. In particular, when the dust clears, the ten-dimensional identities are the celebrated Moufang identities.


text:
# Physics of fundamental Symmetries and Interactions - PSI2019

20-25 October 2019
PSI
Europe/Zurich timezone

## Status of the neutron lifetime experiment $\tau$SPECT

22 Oct 2019, 16:54
1m
WHGA/001 - Auditorium (PSI)

Poster

### Speakers

Jan Kahlenberg Kim Ulrike Ross (Johannes-Gutenberg-University Mainz)

### Description

The $\tau$SPECT experiment aims to measure the neutron lifetime $\tau_n$ using a 3D magnetic storage technique. Due to the neutron’s magnetic moment, very low-energetic neutrons (ultracold neutrons, UCN) with a maximum energy of $\approx 50\,\mathrm{neV}$ can be stored in the magnetic trap with a volume of $\approx 8$ litres. $\tau$SPECT is designed to determine $\tau_n$ using two independent measurement methods. In phase I, surviving UCN in the storage volume after varying storage times are counted. Phase II involves the in-situ detection of decay protons.
A proof-of-principle measurement using the magnetic field of the former $a$SPECT spectrometer (double hump structure) for longitudinal confinement and a fused silica tube for radial storage has been performed in July 2015 [1]. Since then, besides the successful upgrade of the UCN D source at the pulsed research reactor Mainz [2], the 3D magnetic trap using a magnetic octupole for the radial confinement has been installed and commissioned. Other relevant components are a movable neutron guide system with an adiabatic fast passage (AFP) spin flipper as well as a custom-designed UCN detector (boron-coated ZnS:Ag scintillator).
We will present the current status of the experiment and the progress of the initial commissioning runs.

References
[1] J. Karch, PhD thesis, Johannes Gutenberg University Mainz, 2017
[2] J. Kahlenberg et al., Eur. Phys. J. A 53, 226 (2017)

Funding acknowledgement
This work has been supported by the Cluster of Excellence ''Precision Physics, Fundamental Interactions, and Structure of Matter'' (PRISMA+ EXC 2118/1) funded by the German Research Foundation (DFG) within the German Excellence Strategy (Project ID 39083149)

### Primary authors

Kim Ulrike Ross (Johannes-Gutenberg-University Mainz)

### Co-authors

Dr Peter Bluemler (Johannes-Gutenberg-University Mainz) Prof. Martin Fertl (Johannes Gutenberg Universitaet Mainz) Werner Heil (Institute of Physics) Dieter Ries (Johannes Gutenberg Universitaet Mainz) Christian Schmidt (Johannes Gutenberg-Universität Mainz)


text:
# Tag Info

## Hot answers tagged celestial-mechanics

27

You've used the gravitational constant with only three significant digits. So it's no surprise that your answer isn't accurate to five significant digits. Instead of $G$ and $M_\odot$ separately, you should use the product $GM_\odot$, known as the standard gravitational parameter. Its value is known very accurately: in the link, you'll find $$GM_\odot = ... 20 The effective gravity inside the ISS is very close to zero, because the station is in free fall. The effective gravity is a combination of gravity and acceleration. If you're standing on the surface of the Earth, you feel gravity (1g, 9.8 m/s2) because you're not in free fall. Your feet press down against the ground, and the ground presses up against your ... 16 This web page has a nice discussion on it: http://archive.ncsa.illinois.edu/Cyberia/NumRel/EinsteinTest.html Basically the orbit's eccentricity would precess around the sun. Classical stellar mechanics (or Newtonian gravity) couldn't account for all of that. It basically had to do with (and forgive my crude wording) the sun dragging the fabric of ... 15 To some extent the universe exhibits something called self-organized criticality where a dynamic, non-linear system with many degrees of freedom (the gas after the Big Bang but before the emergence of structure) eventually forms a system with a notable degree of scale invariance (moons orbiting planets, planets orbiting stars, stars orbiting galactic ... 14 This is not that there is no exact solution, only the exact solutions for x(t) and y(t) use elliptic functions. The problem whether elliptic functions (which are defined by inverse of some integrals) are "good" functions is a bit philosophical one; one can on one hand state that sine is not a real function because one must integrate or sum a infinite ... 13 The Moon moves at about a thousand metres per second, but it's a long way away so it only appears to move slowly. Most of the apparent movement of the Moon is actually due to the rotation of the Earth. We see it appearing to go round the Earth once a day, but it actually takes about 28 days to complete an orbit. The Wikipedia article on the Moon's orbit has ... 13 First, you state a few things that aren't quite right in your question. While the view that's generally talked about is that Phobos and Deimos are likely captured asteroids, dynamically it's a pretty difficult problem (you generally need a third (in this case fourth?) body to take away the extra energy, and it's hard to get a circular orbit around the ... 12 The excitement behind various claims is somewhat excessive. First, the Mayan astronomers, see e.g. Mayan astronomy at this page, didn't use any armillary spheres or sextants as others did. Their observations were made with naked eye and they were depicting positions of planets with crosses. The accuracy of the Venus' position after a synodic 584-day cycle ... 11 It's possible, but it seems like it'd be rare. The planets with the most moons are giant, and very far away from the sun. That means the moons will be very strongly bound to the planet and not get disturbed much by the sun. If our moon had a moon, it'd have to be just the right distance from it that it wouldn't collide with it (the moon's gravity is far from ... 11 There are two elements to why the universe appears to be so orderly: the physical laws of that govern the universe are the same everywhere, and astronomical objects are very, very, very far from each other. Consider two objects, one much larger than the other, and both very far from anything else. Because of gravity (which works the same everywhere), the ... 11 To expand on Prahar's answer, let me run some numbers to try and convince you this is reasonable. Your answer is correct to within one part in 104:$$ \frac{365.256363004}{365.2075}\approx 1.000133795. $$The main perturbing influence on Earth's orbit is the gravitational pull of Jupiter, whose mass is about 1000 times smaller than the Sun, and which orbits ... 10 Kepler's 3rd law assumes that the Earth travels in a perfect ellipse with the only gravitational force on it being from the Sun. Further, Kepler's laws are derived from Newtonian gravitation. In reality, the orbit of the Earth is affected by the gravitational pull of other planets, and by the effects of General Relativity and is therefore not quite ... 10 The horseshoe orbit shape does occur only in the reference frame of the Earth’s orbit. It is a manifestation of a third body problem, and the orbit is in an accelerated reference frame. The loop, which is this distended horseshoe shape, has no central gravitational source inside the loop. As a result the orbit is a “pseudo-orbit.” From the perspective of an ... 10 The spiral arms don't mean that the mass is getting sucked to the center. They're just wave-like density patterns. The bodies in orbit around the center of the galaxy are in stable orbit; just like the Earth around the Sun and the Moon around the Earth. What happens is that gravity accounts for the centripetal force (in the orbiting frame, gravity is ... 9 No "large bodies" that I know of. Certainly it is physically possible for something to orbit a moon; lots of spacecraft have been orbited around the Moon and other moons in the solar system. As long as we're simply discussing hierarchies of orbits, the Sun orbits the galactic center and the Milky Way is gravitationally bound to the Local Group. [EDIT: ... 9 In his lecture The Cosmic Distance Ladder (video), mathematician Terence Tao describes the history of how mankind has successfully mapped the solar system and beyond. In particular, he describes why Copernicus put the sun in the center (reason: he discovered that the sun is dozens of times bigger than the earth) and how Kepler found his laws of planetary ... 8 The force you experience is of the form \vec{F} = - Gmr\vec{u_r}, and we also know that in the surface, r=R, it is \vec{F}=- gm\vec{u_r}, so$$\vec{F} = -gm\frac{r}{R}\vec{u_r}$$This is a conservative force that can be derived from a potential$$U = \frac{1}{2}gm\frac{r^2}{R} Because this is a central force, angular momentum will be conserved, ...

7

The main problem with being near a large planet are the tidal forces produced by its gravity. The Moon is pretty small compared to the Earth, and it's a quarter of a million miles away, but it still produces large movements in sea level i.e. the tides. If you imagine the moon getting bigger and closer the tidal effects would increase. The land feels the same ...

7

This was previously a comment to space_cadet's answer but became long (down-vote wasn't me though). I don't understand space_cadet's talk about unstable orbits. Recall that two-body system with Coulomb interaction has an additional $SO(3)$ symmetry and has a conserved Laplace-Runge-Lenz vector which preserves the eccentricity. Because interactions between ...

7

Mercury's orbit is elliptical. The orientation of this ellipse's long axis slowly rotates around the sun. This process is known as the "precession of the perihelion of Mercury" in astronomical jargon. It's a total of 5600 arcseconds of rotation per century. The precession is mostly a result of totally classical behavior; almost all of the movement of the ...

6

Geostationary satelites are essentially for ever. This is becoming a problem since there are a limited number of places you want to put a geostationary satelite and most of them are full. Any collisions/explosions in geostationary mean debris will also stay there for a long long time. For low earth orbit satelites it depends on their shape, altitude and the ...

6

Forgetting about the specifics of your problem, you say you want to work in the Newtonian regime for gravitation on a toroidal space. The way this differs from a non-toroidal space is that you can "unroll" the torus into an infinite lattice of duplicates. This is a lot like the lattice of mirror charges if you were doing electrostatics on a torus (the ...

6

Beauty is in the eye of the beholder. So is order. What is a gigantic orderly mechanism for you, might be a horrible entropic mess for me. And we'd both be right.

6

The direction in which the celestial bodies are located is seen directly in the telescopes (two angular coordinates); the distance from the Earth is the hard part. For planets, we may measure the distance by waiting for a radar echo. Aristarchus has invented a useful method to get a third piece of information: when the Moon is exactly half-full, ...

6

I think it is basically a coincidence at the current time. Earth's axis of rotation precesses with a period of about 26,000 years, and according to Wikipedia, its orbital axis precesses with a period of about 112,000 years. So the winter solstice and perihelion will have all possible relative phases over a long time period.

6

Century First, you'd have to watch through a night to see if Polaris wobbles - currently, the radius is about 1° I think, but that changes with precession (and nutation, but that's small enough to ignore). Once you know that, you can try to find a point in the sky that stays still all the time (like Polaris nearly does in our time). This is celestial pole, ...

5

This is likely stretching your requirements a little bit, but I find this related method ingenious and surprising. You can actually find your longitude as well as the other data from @Pharoh's answer if you can remember very well how the night sky looked at your original position on Earth. The method is the Lunar Distance Method (see Wiki page with this ...

5

A small portion of any smooth curve looks the same as a small piece of a parabola in the limit. Choose a coordinate system so that the tangential direction in the middle of the segment is along the $x$ axis and choose a translation for the middle of the segment to sit at $(0,0,0)$, the origin of the coordinates. Then $y,z$ on the curve (ellipse etc.) may be ...

4

This is possible. For example, this post provides a good explanation of the math involved. The key point is whether an object lies in the planet's Hill sphere or the moon's Hill sphere: Can the Moon have a moon? Yes, the Moon could have a sub-satellite. If we look at a system of the Earth, Moon, and a sub-satellite, the same idea as above ...

4

The faster you go, the less velocity you theoretically can gain from a gravity assist. The reason for this is that the faster you go the harder it is to bend the orbit. To proof this we have to use the patched conics approximation, which means that while within a sphere Kepler orbits can be used. The sphere can be simplified to be infinitely big, since the ...

Only top voted, non community-wiki answers of a minimum length are eligible


text:
talking_points

# Differences

This shows you the differences between two versions of the page.

 — talking_points [2018/07/23 11:49] (current) Line 1: Line 1: + \\ \\ + ====== Talking points for folks who talk to the public or the media about PassMassAmendment ====== + \\ - Monied interests have corrupted our democratic process.\\ \\ - Corporations were originally intended to serve the community, and were allowed to organize and own property **only** for the purposes of specific projects that would end, like building a bridge. But they were limited dramatically in their scope to prevent them from becoming too powerful.\\ \\ - The power of wealthy people as well as foreign interests are increasingly dominating our democratic process, through direct donations to our electoral process, as well as through Dark Money, that is, money from SuperPACs and "social welfare" organizations that either do not have to disclose their donors or have found ways to hide their donors' identities and/or the real nature of their actions. (For more on Dark money, [[faqs_disclose_dark_money|here's our FAQ]].) We believe that this was not what the framers of our constitution intended! \\ \\ - The people have been urging Legislators to **do something** to ensure that corporations and wealthy/foreign interests do not dominate our government.\\ \\ - **Citizens have the right to petition to alter government here in Massachusetts**. Where did this come from? To prevent monied interests from taking over our government, the 1917 Massachusetts Constitutional Convention put in place the Initiative & Referendum process (I&R), referred to as "the petition process." When ratified, the I&R process put in place the legal process for groups of people to gather signatures and make law via the ballot. The I&R Amendment's purpose was to give a voice to the people, who felt that their elected officials were not representing their views.\\ \\ - PassMassAmendment is using the right to petition as part of **a two-pronged strategy**: We have filed bills in the statehouse, but we also are using the official petition process, because every voter signatures helps us pressure legislators into helping.\\ \\ We have[[state_senate_house_bills| three bills ]]currently in the Statehouse, which we have also petitioned the state:\\ \\ One bill amends the Massachusetts Constitution, based on "Corporations Are Not People."\\ Constitutional legal scholars have suggested that it will help us if we "clarify" the Massachusetts Constitution based on "Corporations Are Not People, Money Is Not Speech"\\ \\ Two bills make Massachusetts Law. They would:\\ - increase disclosure of "dark money"\\ - reduce campaign donations by out of state people\\ \\ - We are proceeding to promote these bills through the Massachusetts legislature and via petition. We'd be happy if the legislature would do this work for us, but we are not counting on it. Therefore we are proceeding with the petition process. Every signatures helps put pressure on the legislature to do it for us.\\ \\ - The movement is growing: Only a few years ago, we were a group of 4 people. We now have hundreds of people working with us in one way or another.\\ \\ - We hope you will join us, petitioning will start in the fall, training will start this summer, and organizing has already begun.\\ \\  www.PassMassAmendment.org\\ [[mailto:PassMassAmendment@gmail.com|PassMassAmendment@gmail.com]]\\  PassMassAmendment on Facebook, and Twitter


text:
# Show that $\sin(\arctan x) < x < \tan(\arcsin x)$

Tags:
1. Aug 17, 2016

### Rectifier

The problem
For $0 < x < 1$ . Show that
$$\sin(\arctan x) < x < \tan(\arcsin x)$$

The attempt

I know that $\sin x < x < \tan x$ is true for $0 < x < \ \pi / 2$

x - is by definition the length DA (in radians)

I draw a right triangle with sides x and 1 and with hypotenuse $\sqrt{x^2+1}$

$\sin v = \frac{x}{\sqrt{x^2+1}}$

$\tan v = \frac{x}{1} \Rightarrow v = \arctan \ x$

$\sin (\arctan \ x) = \frac{x}{\sqrt{x^2+1}}$

I am trying to write an expression for $\tan(\arcsin(x))$

$\sin v = \frac{x}{\sqrt{x^2+1}} \Rightarrow v = \arcsin \left( \frac{x}{\sqrt{x^2+1}} \right)$

$\tan v = x \Rightarrow \tan \left( \arcsin \left( \frac{x}{\sqrt{x^2+1}} \right) \right) = x$

But I fail. Please Help me write an expression for $\tan(\arcsin(x))$.

Last edited: Aug 17, 2016
2. Aug 17, 2016

### Staff: Mentor

I don't think this is necessary. You can compare arctan(x) and arcsin(x) with x.


text:
# Tag Info

14

These are completely different things: Man-in-the-middle is an active attack to a cryptographic protocol, where the attacker is, effectively, in between the communications of two users, and is capable of intercepting, relying, and (possibly) altering messages. In this case, the meaning of "in the middle" is direct: the attacker is in the middle of two ...

3

Any shared secret can be used. Securely distributed passwords and symmetric keys, for example. Alternatively, you can use asymmetric cryptography, such as public keys. For one example, SSH has for years authenticated servers using public key cryptography and users typically using either public keys or passwords. Only recently had SSH added support for ...

3

However, Eve has a copy of Alice's key pair and intercepted the outgoing message. She uses crypto_box_open and passes in pKb and sKa, the same keys that were used to encrypt the message. This yields the plain text message. She changes the message, re-encrypts it, and sends it on to Bob. As you correctly observed, Eve having Alice's private key is ...

2

What you observed here is a "special" and "unusual" behavior of the NaCl interface in the way it handles the crypto_box. What the crypto_box does is basically perform a static Diffie-Hellman key-exchange (using your secret and the recipient's public key) between you and the receiver and derive keys from that. So you get the same symmetric encryption key for ...

2

The reason Lamport's scheme is secure against a passive attacker is that even if they see $H^{n-1}(p)$ for a given $n$, the server would require the preimage of that hash, $H^{n-2}(p)$ on the next login. The active attack, in comparison, allows Trudy to find an earlier iteration than the server is expecting. That allows calculating several login hashes by ...

2

in diffie-hellman key exchange algorithm vulnerability's is good defined by RSA lab : "The Diffie-Hellman key exchange is vulnerable to a man-in-the-middle attack. In this attack, an opponent Carol intercepts Alice's public value and sends her own public value to Bob. When Bob transmits his public value, Carol substitutes it with her own and sends it to ...

1

Simply put, there are two key-pairs for DHE_RSA instead one key-pair of RSA_RSA. For example, for AES128_CBC_SHA(long name is RSA_RSA_AES128_CBC_SHA), you have one key-pair for both key-exchange and authentication. for ECDHE_RSA_AES_CBC_SHA, you have two key-pairs. The ECC key-pair is temporary for key-exchange. The RSA key-pair from cert is used for ...

1

When I sign a message (which has potentialy low entropy) using a private key and i send it without the original message, can the original message be retrieved from the Signaturen? It depends. If you use a signature scheme with appendix it will be impossible to recover the message using other ways than brute-force (so the answer would be "yes" for ...

1

TLSv1.1 doesn't have a different treatment of the key-exchange parameters than TLSv1.2 has. It's just a little less obvious. Let's dig into TLSv1.1 specification. On page 44 you'll find that ServerKeyExchange consists of ServerXXXParams params and Signature signed_params. Now on page 44 you'll actually find a definition of Signature. This definition signs ...

1

Suppose the server does not check the Client Finished value. This means that the MITM could change some handshake messages and the server would not know this (e.g., downgrade, as you mentioned). So, you could use this to fool a server that doesn't check the Client Finished value. If n bits are checked by the server, you have a 1/2^n chance of getting ...

1

Saying that ECDH does not do authentication is not entirely accurate. If you use ECDH with static, known public keys and both sides prove knowledge of the shared secret, then you do get authentication. However, with ephemeral keys you need some way to authenticate the exchange of public keys. That could be ECDSA or it could be any other authentication. So ...

Only top voted, non community-wiki answers of a minimum length are eligible


text:
# MonthOfJulia Day 11: Metaprogramming

2015-09-10 Andrew B. Collier

Metaprogramming in Julia is a big topic and it’s covered extensively in both the official documentation as well as in the Introducing Julia wikibook. The idea behind metaprogramming is to write code which itself will either generate or change other code. There are two main features of the language which support this idea:

• code representation (expressions and symbols) and
• macros.

## Code Representation

A symbol (data type Symbol) represents an unevaluated chunk of code. As such, symbols are a means to refer to a variable (or expression) itself rather than the value it contains.

julia> n = 5 # Assign to variable n.
5
julia> n # Refer to contents of variable n.
5
julia> typeof(n)
Int64
julia> :n # Refer to variable n itself using quote operator.
:n
julia> typeof(:n)
Symbol
julia> eval(:n)
5
julia> E = :(2x + y) # Unevaluated expression is also a symbol.
:(2x + y)
julia> typeof(E)
Expr

The quote operator, :, prevents the evaluation of its argument.

Expressions are made up of three parts: the operation (head), the arguments to that operation (args) and finally the return type from the expression (typ).

julia> names(E)
3-element Array{Symbol,1}:
:args
:typ
:call
julia> E.args
3-element Array{Any,1}:
:+
:(2x)
:y
julia> E.typ
Any

We can evaluate an expression using eval(). Not only does eval() return the result of the evaluated expression but it also applies any side effects from the expression (for example, variable assignment).

julia> x = 3; y = 5; eval(E)
11
julia> eval(:(x = 4))
4
julia> eval(E)
13

No real surprises there. But the true potential of all this lies in the fact that the code itself has an internal representation which can be manipulated. For example, we could change the arguments of the expression created above.

julia> E.args[3] = :(3y) # 2x + y becomes 2x + 3y
:(3y)
julia> E
:(2x + 3y)
julia> eval(E)
21

That still seems a little tame. What about manipulating a function?

julia> F = :(x -> x^2)
:(x->begin # none, line 1:
x^2
end)
julia> eval(F)(2) # Evaluate x -> x^2 for x = 2
4
julia> F.args[2].args[2].args[3] = 3 # Change function to x -> x^3
3
julia> eval(F)(2) # Evaluate x -> x^3 for x = 2
8

## Macros

Macros are a little like functions in that they accept arguments and return a result. However they are different because they are evaluated at parse time and return an unevaluated expression.

julia> macro square(x)
:($x *$x)
end
julia> @square(5)
25
julia> @square 5
25
julia> macroexpand(:(@square(x)))
:(x * x)
julia> macroexpand(:(@square(5)))
:(5 * 5)
julia> macroexpand(:(@square(x+2)))
:((x + 2) * (x + 2))

macroexpand() is used to look at the code generated by the macro. Note that parentheses were automatically inserted to ensure the correct order of operations.

Julia has a plethora of predefined macros which do things like return the execution time for an expression (@time), apply an assertion (@assert), test approximate equality (@test_approx_eq) and execute code only in a UNIX environment (@unix_only).

The fact that one can use code to build and edit other code made me start thinking about self-replicating machines, self-reconfiguring modular robots, grey goo and utility fog. If we can do it in software, why not in hardware too? More evidence of my tinkering with metaprogramming in Julia can be found on github. No self-reconfiguring modular robots though, I’m afraid.

Next: MonthOfJulia Day 12: Parallel Processing.
Previous: A ggplot2 oddity.


text:
## Practical Activity: Big Data Ecosystem

• Perform the installation of RHadoop's rmr and rhdfs packages as in section 5.9.A.

• Run the examples on squaring the numbers 1 to 100, firstly using a simple R script, and, secondly using the MapReduce function of the RHadoop rmr package. In the console, observe the number of splits and the mapping and reducing processes.

• You will now perform Data Analysis using RHadoop

• Run the example in section 5.9.C and see the generated pie chart.

• Make a copy of the above script given for MapReduce function. Modify the new script so that it uses the MapReduce function to determine the percentage of countries falling under each of the following classification:

• The expected outputs should be as follows:

$key GNI 1 "Low-Income Economies" 5 "High-Income Economies" 4 "Lower Middle-Income Economies" 2 "Upper Middle-Income Economies"$val

[1] 27 49 50 52


text:
# Variational techniques for breathers in nonlinear wave equations

Kohler, Simon

##### Abstract (englisch):
In this thesis we investigate the quasilinear wave equation
\begin{align*}
g(x)w_{tt}-w_{xx}+h(x)(w_t^3)_t=0 \quad \text{for } (x,t)\in\mathbb{R}\times\mathbb{R},
\end{align*}
and the semilinear wave equation
\begin{align}
where $\Delta$ denotes the Laplacian acting only on the variable $x$. Most of the time we refer to $x$ as $\textit{space}$ and to $t$ as $\textit{time}$. We are specially interested in spatially localized and time-periodic solutions, so-called $\textit{breathers}$.


text:
# The Unapologetic Mathematician

## Representable Functors

Now that we have a handle on hom functors, we can use them to define other functors.

Since $\hom_\mathcal{C}$ is a functor from the product category $\mathcal{C}^{\rm op}\times\mathcal{C}$ to sets, it is functorial in each variable separately. This means that we can take any object $A$ of $\mathcal{C}$ and build the covariant functor $B\mapsto\hom_\mathcal{C}(A,B)$ and the contravariant functor $B\mapsto\hom_\mathcal{C}(B,A)$. We call $A$ the representing object of these functors.

Now not every functor $\mathcal{C}\rightarrow\mathbf{Set}$ is exactly of this form, but a good many of them are naturally isomorphic to such a functor. We call such a functor “representable”. Representable functors turn out to be extremely useful, as we’ll see.

As an example, consider the “underlying set” functor $U:\mathbf{Grp}\rightarrow\mathbf{Set}$. This takes a group to its underlying set, and a homomorphism of groups to its underlying function. You should check that it is, indeed, a covariant functor. I say that it is represented by the group $\mathbb{Z}$. That is, $U(\underline{\hphantom{X}})\cong\hom_\mathbf{Grp}(\mathbb{Z},\underline{\hphantom{X}})$.

Given an element $g$ of a group $G$, there is a unique homomorphism $\phi_g:\mathbb{Z}\rightarrow G$ so that $1\mapsto g$. Conversely, every homomorphism sends $1$ to some element of $G$, so this sets up a bijection between the set of elements of $G$ and the set of homomorphisms from $\mathbb{Z}$ to $G$. These bijections $\eta_G:U(G)\rightarrow\hom_\mathbf{Grp}(\mathbb{Z},G)$ are the components of the natural isomorphism we’re looking for. We need to check that for any group homomorphism $f:G\rightarrow H$ we have naturality: $\eta_H\circ U(f)=\hom(\mathbb{Z},f)\circ\eta_G$.

Since $U(f)$ is just the function (forgetting that it preserves a group structure), the left side of the naturality equation sends an element $g\in G$ to the unique homomorphism $\phi_{f(g)}:\mathbb{Z}\rightarrow H$ with $\phi_{f(g)}(1)=f(g)$. On the right, we first send $g$ to the homomorphism $\phi_g:\mathbb{Z}\rightarrow G$, and then compose with $f$. This also satisfies $f(\phi_g(1))=f(g)$, so $f\circ\phi_g=\phi_{f(g)}$, and the naturality equation is satisfied.

Now, we have a bunch of other “forgetful” functors sitting around. All of the algebraic structures we’ve considered — semigroups, monoids, abelian groups, rings, $R$-modules (left and right), and even quandles — they all have an “underlying set”. First you should be able to verify that each assignment of an underlying set is actually a covariant functor. Then, try to find a representing object for each functor.

This particular use of representable functors to describe forgetful functors to the category of sets is the first solid step towards moving away from viewing algebraic concepts as “sets with extra structure”. For instance, we now see that we don’t really need to describe a group as a set with a multiplication function, inverse function, and identity. A group is just an object in the category of groups, and within the category it has all sorts of interrelationships with all the other groups. We can reconstruct the older picture of a group from these relationships, and here we’ve seen how to recover the set of elements of $G$ as $\hom_\mathbf{Grp}(\mathbb{Z},G)$.


text:
Package for pie charts

I want to create a pie chart in LaTeX. Do you know a package which manages that? I tried datatool which uses tikz as backend but seems to be unusable due to mysterious floating point errors.

-
I recommend asking about the problems with datatool. –  Will Robertson Nov 21 '10 at 3:21
This is really a non-answer, so I’ll just add it as a comment: I strongly recommend not creating a pie chart at all; there are far better alternatives. See the article ‘Save the Pies for Dessert’ at perceptualedge.com/articles/08-21-07.pdf for a thorough discussion. –  Karl Ove Hufthammer Dec 14 '11 at 10:39
@KarlOveHufthammer A pie chart has two advantages: people like it and you can see with one glance whether the pieces of the pie add up to 100%. All other charts force me to start my own calculation, instead of listening to the speech. –  Keks Dose May 21 at 9:39

Use the package pgf-pie, which is not on CTAN, but on Google Code.

\begin{tikzpicture}
\pie{10/A, 20/B, 30/C, 40/D}
\end{tikzpicture}

Note however that there are conflicts with this package and any other package that introduces the command \text—e.g.: amstext. In order to mediate these effects edit pgf-pie.sty, replacing all occurrences of: \text with: \textASDF.

-
The latest version of the package doesn't seem to redefine \text. –  Torbjørn T. Nov 21 '12 at 7:05
This is a great package! The manual is really clear and easy. What a pity that this package is not on CTAN. –  Keks Dose May 21 at 9:42

An piechart example with pgf/tikz from texample.net by Robert Vollmert is a good starting point. I'll just quote it here for completeness:

% Pie chart
% Author: Robert Vollmert
\documentclass{article}

\usepackage{calc}
\usepackage{ifthen}
\usepackage{tikz}
\begin{document}
\newcommand{\slice}[4]{
\pgfmathparse{0.5*#1+0.5*#2}
\let\midangle\pgfmathresult

% slice
\draw[thick,fill=black!10] (0,0) -- (#1:1) arc (#1:#2:1) -- cycle;

% outer label
\node[label=\midangle:#4] at (\midangle:1) {};

% inner label
\pgfmathparse{min((#2-#1-10)/110*(-0.3),0)}
\let\temp\pgfmathresult
\pgfmathparse{max(\temp,-0.5) + 0.8}
\let\innerpos\pgfmathresult
\node at (\midangle:\innerpos) {#3};
}

\begin{tikzpicture}[scale=3]

\newcounter{a}
\newcounter{b}
\foreach \p/\t in {20/type A, 4/type B, 11/type C,
49/type D, 16/other}
{
\setcounter{a}{\value{b}}
\slice{\thea/100*360}
{\theb/100*360}
{\p\%}{\t}
}

\end{tikzpicture}

\end{document}

which looks like

-
This is a good start. I would like to be able to enter 49.5 instead of 49 percent as well as be able to set the colors. –  The Dude Sep 30 '11 at 17:07

Here's an example taken from the datatool manual:

\documentclass{article}

\usepackage{datapie}

\begin{filecontents}{test.csv}
Name,Quantity
"Apples",30
"Pears",25
"Lemons,Limes",40.5
"Peaches",34.5
"Cherries",20
\end{filecontents}

\begin{document}

\begin{figure}[htbp]
\centering
\DTLpiechart{variable=\quantity,outerlabel=\name}{fruit}{%
\name=Name,\quantity=Quantity}
\caption{A pie chart}
\end{figure}

\end{document}

-

Run with xelatex

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{bera}

\begin{document}

\begin{pspicture}(-3,-3)(3,3)
\psChart[userColor={red!30,green!30,blue!40,gray,cyan!50,
\psset{nodesepA=5pt,nodesepB=-10pt}
\ncline{psChartO1}{psChart1}\nput{0}{psChartO1}{1000 (34.5\%)}
\ncline{psChartO2}{psChart2}\nput{150}{psChartO2}{500 (17.2\%)}
\ncline{psChartO3}{psChart3}\nput{-90}{psChartO3}{600 (20.7\%)}
\ncline{psChartO4}{psChart4}\nput{0}{psChartO4}{450 (15.5\%)}
\ncline{psChartO5}{psChart5}\nput{0}{psChartO5}{150 (5.2\%)}
\ncline{psChartO6}{psChart6}\nput{0}{psChartO6}{200 (6.9\%)}
\bfseries%
\rput(psChartI1){Taxes}\rput(psChartI2){Rent}\rput(psChartI3){Bills}
\rput(psChartI4){Car}\rput(psChartI5){Gas}\rput(psChartI6){Food}
\end{pspicture}

\end{document}

-


text:
# Start a new discussion

## Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

## Discussion Tag Cloud

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeMay 7th 2015

gave Atiyah-Hirzebruch spectral sequence a minimum of an Idea-section and added a minimum paragraph with pointers to applications to D-brane charges in string theory here, also on the D-brane charge page itself here

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeFeb 10th 2016
• (edited Feb 10th 2016)

Often the terminology “Atiyah-Hirzebruch spectral sequence” is taken to refer to only this case with $F = \ast$, while the general case is then referred to as “Serre spectral sequence for generalized cohomology” or similar. In (Atiyah-Hirzebruch 61,p. 17) the case $F = \ast$ is labeled “Theorem”, while the general case, stated right after the theorem, is labeled “2.2 Remark”.

The proof of the theorem that is given is very short, it just says that since topological K-theory satisfies the exactness axiom of a generalized cohomology theory, it is immediate that the conditions for a spectral sequence stated as Axioms (SP.1)-(SP.5) in (Cartan-Eilenberg 56, section XV.7) are met. Indeed Example 2 in (Cartan-Eilenberg 56, section XV.7) observes that the spectral sequence in question exists for $E$ “some fixed cohomology theory” because “Axioms (SP.1)-(SP.4) are consequences of usual properties of cohomology groups”.

In view of this, the contribution of (Atiyah-Hirzebruch 61) would not be so much the observation of what is now called the AHSS, rather than the proof that K-theory indeed satisfies the axioms of a generalized cohomology theory. Indeed, according to (Adams 74, p. 127-128, 215), the AHSS was earlier observed by George Whitehead and “then became a folk-theorem” which was “eventually published by Atiyah and Hirzebruch”.

Maybe it should be called the “Cartan-Eilenberg-Whitehead spectral sequence”.

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeFeb 11th 2016

Started spelling out the proof (of the existence and second page of the AHSS).

• CommentRowNumber4.
• CommentAuthorUrs
• CommentTimeApr 19th 2016

In the proof of the Atiyah-Hirzebruch spectral sequence I have fixed the statement that the $E_1$-page is the cochain complex for singular cohomology to the statement that it is the cochain complex for cellular cohomology. Of course the cohomology groups coincide (which led to the previous glitch), but at this point of the proof the cochain complex itself matters.

I have also spelled out the proof in more detail, including the actual argument that $d_1$ is the cellular coboundary operator. But for the moment I did this in another entry (here) and added just a pointer to that from the previous page.

(Eventually, once my edits have stabilized a bit more, I’ll port it over. )

• CommentRowNumber5.
• CommentAuthorUrs
• CommentTimeApr 29th 2016
• (edited Apr 29th 2016)

I have filled in text much expanding (with respect to the previous version)

Then I added a section on

because I finally found (thanks to Hisham Sati!) an article that proves that the two constructions indeed give isomorphic spectral sequences:

It’s ancient: Maunder 63.

I haven’t checked in full detail, but it seems clear that what Maunder checks is isomorphic to the traditional AHSS is just what Mike observed follows neatly from a perspective of HoTT (in his writeup at spectral sequences (homotopytypetheory))


text:
# Kelvin

Kelvin is the SI base unit of temperature.[1] It is given the symbol . Since temperature measures the energy of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of absolute zero. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important quantum mechanics). A degree Kelvin and a degree Celsius are the same unit, as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).

Kelvin is usually avoided for everyday use, instead it is always used for temperatures in physics (and also often in chemistry), in equations such as the ideal gas law. If a gas had a temperature of -52.15°C (220 K) the negative number would make no sense in the ideal gas law.

Temperature is a measure of the kinetic energy of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the Boltzmann constant. This constant is derived from the ideal gas law, given by the equation where is the Boltzmann constant, J/K.


text:
4 months ago

## 10 Ways To Get Out Of Homework music quisiera tiest

10 Ways To Get Out Of Homework

ways homework causes stress

why homework is good

ways homework harmful

ways to make homework fun

ways to focus on homework

ways to practice spelling words for homework

ways to get out of homework

ways to present homework

ways to stop procrastinating homework

ways to do homework faster

ways to finish homework faster

ways to do homework

ways to make homework more fun

Cum sociis natoque penatibus et magnis part masa urient montes, nascetur ridiculus mus.. Kids are more successful in school when parents take an active interest in homework - here are ways to help.. iemjornacion comic strip o essay? :) ap language and composition synthesis essays steps on how to write a research paper keshavn importance of college ethics essay .. Find Where Get Out Is Available To Stream Now. Yidio is the premier streaming guide for TV Shows & Movies on the web, phone, tablet or smart tv.. Make everything your kids need to complete their homework readily accessible. How to do homework fast 10 helpful tips.. If you find yourself struggling to do well in your math class, then read these math study tips to find out how you can become a better math student.. How to do homework fast: 10 helpful tips. . and other people, can get in the way of completing homework . myhomeworkdone.com - Homework help; Get the best writing .. Child Not Doing Homework? . Best Ways to Get Your Kids to Do Homework Without All the . she loves to tune people out. She is 7 now and has been this way since .. This lesson plan gives parents insight into the 10 benefits of homework so they can . students are not excited about the homework they get assigned because they .. These ten best homework excuses . Find out if your teacher . Funny Homework Excuses to Replace your Boring Excuses for not Doing Homework; The 10 Most Common .. Is anyone in wrd that has to do this rhetorical analysis essay that wants to help me understand this prompt? a bolt from the blue and other essays on love academy british centenary english. Find Where Get Out Is Available To Stream Now. Yidio is the premier streaming guide for TV Shows & Movies on the web, phone, tablet or smart tv.. 10 ways to get out of doing your homework March 4, 2018 / in Media Releases / by . Mf#sgnp is a genius programe no 2nd thought #mumbai #leopards have a look at the .. #academic-writing essay 2000 words of global financial strategy $250 usd post your bid with confidence or retweet ;) faire une intro de dissertation abstracts research paper on cell phones. 10 ways to get out of doing your homework. How my morals & values came to be -uc essay prompt regarding what world i come from: it was late in the afternoo.. Homework: A Guide for Parents BY PEG . of homework see it as a way to ensure practice and mastery of critical . Helping your student get the most out of homework.. Get the most out of your Cobb portable barbecue with this new 104-page recipe book.. The Top 10 Ways Of Getting out Of Homework!! Subscribe!. Yeah. im not gonna do yhe siddhartha essay lol! oxford university modern languages extended essay word argumentative essay on texting and driving quote culture development essays.. My Daughters Homework . You get parents demanding their children get more homework because . My wife and I decide to go out to dinner, and on our way up .. 10 ways to get out of doing your homework.. 10 Ways To Get Out Of Doing Your Homework, - Good pandora stations for doing homework. We have a highly professional and qualified writing staff. Our writers have .. The Pros and Cons of Homework. . Top 10 Excuses for Getting Out of P.E . Have you ever made up an excuse to get out of P.E. class? Kidzworld your ways of ditching .. Drake motion essay, 10 ways to get out of doing your homework, homework helper vocabulary. 7 Best Excuses for Missing Your Homework . the 7 best sure fire excuses to get you out of homework. . 10 Ways to Get Out of Chores with Alexa .. Planning your Holiday Trip? We at CeylaanHolidays assure you the best quality services of Hotels & Buddhist tours in Sri Lanka. Get in touch with us today.. How to Excuse Yourself from Unfinished Homework. . life gets in the way and you . perhaps like you are filling out a homework planner and you forgot to put the .. Preserving nature essayists, 10 ways to get out of doing your homework, ways to not do your homework; I spent the last hour reflecting on life. my essay isn't finished.. Find Where Get Out Is Available To Stream Now. Yidio is the premier streaming guide for TV Shows & Movies on the web, phone, tablet or smart tv.. #academic-writing essay 2000 words of global financial strategy$250 usd post your bid with confidence or retweet ;) faire une intro de dissertation abstracts .. 10b5 analysis essay, 10 ways to get out of doing your homework, woodlands junior homework help history ww2. Strona gwna > Bez kategorii > 10 ways to get out of doing your homework. Bez kategorii. 10 ways to get out of doing your homework.. Homework: A Guide for Parents BY PEG . of homework see it as a way to ensure practice and mastery of critical . Helping your student get the most out of homework.. I was asked by SImpleK12 to do a webinar on how to get rid of homework . of homework or at the very least limit it, . To Get Rid of Homework in 11 Steps Or .. Experts say there may be real downsides for young kids who are pushed to do more homework than the 10 . schools can get burned out . ways your body responds to .. What a surefire way to get kids . We say no to homework and . Maybe the schools really feel they have to give out homework because they cant teach .. There's no doubt these academic aids can complete your homework, . out of real conceptual . a way for students to access real-time .. If homework battles have become a nightly power . Now the battle for autonomy is getting played out around homework and . 2. 10 Ways to Motivate Your Child to .. Visual kids will get a kick out of seeing where they are in the week, . things to do > indoor fun > 8 Ways to Make Homework Fun . 15 Ways to Goof Off with the .. I probably should have worked on my reflection and essay tonight but guess what didn't happen. dagger scene macbeth essay introduction julius caesar argumentative . cd4164fbe1
1.2 evaluate homework and practice