M. W. Ahmed - York University, Toronto, Canada

M. W. Ahmed
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Name
M. W. Ahmed
Affiliation
York University, Toronto, Canada
City
Toronto
Country
Canada

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Computer Science - Software Engineering (4)
 
Computer Science - Networking and Internet Architecture (4)
 
Mathematics - Information Theory (4)
 
Computer Science - Information Theory (4)
 
Statistics - Machine Learning (3)
 
High Energy Physics - Phenomenology (3)
 
Computer Science - Computers and Society (3)
 
Nuclear Experiment (3)
 
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Physics - Chemical Physics (3)
 
Mathematics - Commutative Algebra (3)
 
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Mathematics - History and Overview (2)
 
Physics - Mesoscopic Systems and Quantum Hall Effect (2)
 
Mathematics - Optimization and Control (2)
 
Statistics - Theory (2)
 
Quantum Physics (2)
 
Physics - Biological Physics (2)
 
Computer Science - Computational Geometry (2)
 
Quantitative Biology - Biomolecules (2)
 
Mathematics - Statistics (2)
 
General Relativity and Quantum Cosmology (1)
 
Physics - Materials Science (1)
 
Nuclear Theory (1)
 
Physics - Instrumentation and Detectors (1)
 
Computer Science - Cryptography and Security (1)
 
Physics - Strongly Correlated Electrons (1)
 
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High Energy Physics - Theory (1)
 
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Physics - Optics (1)
 
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Publications Authored By M. W. Ahmed

This paper deals with a Euler type integral operator involving k-Mittag-Leffler function defined by Gupta and Parihar [8]. Furthermore, some special cases are also taken into consideration. Read More

In this paper, we investigate the detection problem of binary faster-than-Nyquist (FTN) signaling and propose a novel sequence estimation technique that exploits its special structure. In particular, the proposed sequence estimation technique is based on sphere decoding (SD) and exploits the following two characteristics about the FTN detection problem: 1) the cor- relation between the noise samples after the receiver matched filter, and 2) the structure of the intersymbol interference (ISI) matrix. Simulation results show that the proposed SD-based sequence estimation (SDSE) achieves the optimal performance of the maximum likelihood sequence estimation (MLSE) at reduced computational complexity. Read More

We use the concept of 2-absorbing ideal introduced by Badawi to study those commutative rings in which every proper ideal is a product of 2-absorbing ideals (we call them TAF-rings). Any TAF-ring has dimension at most one and the local TAF-domains are the atomic pseudo-valuation domains. Read More

In this paper, we study the quantitative behavior of a spatial risk measure corresponding to a damage function and a region, taking into account the spatial dependence of the underlying process. This kind of risk measure has already been introduced and studied for some max-stable processes in [Koch2015]. In this paper, we consider isotropic Gaussian processes and the excess damage function over a threshold. Read More

In this paper, we investigate the sequence estimation problem of binary and quadrature phase shift keying faster-than-Nyquist (FTN) signaling and propose two novel low-complexity sequence estimation techniques based on concepts of successive interference cancellation. To the best of our knowledge, this is the first approach in the literature to detect FTN signaling on a symbol-by-symbol basis. In particular, based on the structure of the self-interference inherited in FTN signaling, we first find the operating region boundary---defined by the root-raised cosine (rRC) pulse shape, its roll-off factor, and the time acceleration parameter of the FTN signaling---where perfect estimation of the transmit data symbols on a symbol-by-symbol basis is guaranteed, assuming noise-free transmission. Read More

We study those integral domains in which every proper ideal can be written as an invertible ideal multiplied by a nonempty product of proper radical ideals. Read More

We characterize the commutative rings whose ideals (resp. regular ideals) are products of radical ideals. Read More

Laser spectroscopy of the Lamb shift (2S-2P energy difference) in light muonic atoms or ions, in which one negative muon $\mu^-$ is bound to a nucleus, has been performed. The measurements yield significantly improved values of the root-mean-square charge radii of the nuclei, owing to the large muon mass, which results in a vastly increased muon wave function overlap with the nucleus. The values of the proton and deuteron radii are 10 and 3 times more accurate than the respective CODATA values, but 7 standard deviations smaller. Read More

In this paper, we study the operator equation $AB=\lambda BA$ for a bounded operator $A,B$ on a complex Hilbert space. We focus on algebraic relations between different operators that include normal, $M$-hyponormal, quasi $*$-paranormal and other classes. Read More

Numerous important problems can be framed as learning from graph data. We propose a framework for learning convolutional neural networks for arbitrary graphs. These graphs may be undirected, directed, and with both discrete and continuous node and edge attributes. Read More

Any physical system considered to study the QCD deconfinement phase transition certainly has a finite volume, so the finite size effects are inevitably present. This renders the location of the phase transition and the determination of its order as an extremely difficult task, even in the simplest known cases. In order to identify and locate the colorless QCD deconfinement transition point in finite volume $T_{0}(V)$, a new approach based on the finite-size cumulant expansion of the order parameter and the $\mathscr{L}_{m,n}$-Method is used. Read More

In a previous article, we reduced the unsolved problem of the convergence of Collatz sequences, to convergence of Collatz sequences of odd numbers, that are divisible by 3. In this article, we further reduce this set to odd numbers that are congruent to 21 mod 24. We also show that either the Collatz sequence of a given odd number or an equivalent Collatz sequence reverses to a multiple of 3. Read More

We present and analyze several strategies for improving the performance of stochastic variance-reduced gradient (SVRG) methods. We first show that the convergence rate of these methods can be preserved under a decreasing sequence of errors in the control variate, and use this to derive variants of SVRG that use growing-batch strategies to reduce the number of gradient calculations required in the early iterations. We further (i) show how to exploit support vectors to reduce the number of gradient computations in the later iterations, (ii) prove that the commonly-used regularized SVRG iteration is justified and improves the convergence rate, (iii) consider alternate mini-batch selection strategies, and (iv) consider the generalization error of the method. Read More

In this article, we reveal how Benjamin Franklin constructed his second $8 \times 8$ magic square. We also construct two new $8 \times 8$ Franklin squares. Read More

In this article, we reduce the unsolved problem of convergence of Collatz sequences to convergence of Collatz sequences of odd numbers that are divisible by 3. We give an elementary proof of the fact that a Collatz sequence does not increase monotonically. We define a unique reverse Collatz sequence and conjecture that this sequence always converges to a multiple of $3$. Read More

Benjamin Franklin constructed three squares which have amazing properties, and his method of construction has been a mystery to date. In this article, we divulge his secret and show how to construct such squares for any order. Read More

In the context of the Lamb shift measurement in muonic helium we developed a thin-disk laser composed of a Q-switched oscillator and a multi-pass amplifier delivering pulses of 150 mJ at a pulse duration of 100 ns. Its peculiar requirements are stochastic trigger and short delay time (< 500 ns) between trigger and optical output. The concept of the thin-disk laser allows for energy and power scaling with high efficiency. Read More

Due to the finite size effects, the localisation of the phase transition in finite systems and the determination of its order, become an extremely difficult task, even in the simplest known cases. In order to identify and locate the finite volume transition point $T_{0}(V)$ of the QCD deconfinement phase transition to a Colorless QGP, we have developed a new approach using the finite size cumulant expansion of the order parameter and the $L_{mn}$-method. The first six cumulants $C_{1,2,3,4,5,6}$ with the corresponding under-normalized ratios(skewness $\Sigma$, kurtosis $\kappa$ ,pentosis $\Pi_{\pm}$ and hexosis $\mathcal{H}_{1,2,3}$) and three unnormalized combinations of them ($\mathcal{O}={\mathcal{\sigma }^{2} \mathcal{\kappa } }{\mathbf{\Sigma }^{-1} }$, $\mathcal{U} ={\mathcal{\sigma }^{-2} \mathbf{\Sigma }^{-1} }$, $\mathcal{N} = \mathcal{\sigma }^{2} \mathcal{\kappa }$) are calculated and studied as functions of $(T,V)$. Read More

Magnonics is an emerging field with potential applications in classical and quantum information processing. Freely propagating magnons in two-dimensional media suffer from dispersion, which limits their effective range and fidelity. We show the design of controllable magnonic circuitry, that utilise surface current carrying wires to create magnonic waveguides. Read More

While substantial effort has been devoted to understand fraudulent activity in traditional online advertising (search and banner), more recent forms such as video ads have received little attention. The understanding and identification of fraudulent activity (i.e. Read More

We report new measurements of the doubly-polarized photodisintegration of $^3$He at an incident photon energy of 16.5 MeV, carried out at the High Intensity $\gamma$-ray Source (HI$\gamma$S) facility located at Triangle Universities Nuclear Laboratory (TUNL). The spin-dependent double-differential cross sections and the contribution from the three--body channel to the Gerasimov-Drell-Hearn (GDH) integrand were extracted and compared with the state-of-the-art three--body calculations. Read More

We apply stochastic average gradient (SAG) algorithms for training conditional random fields (CRFs). We describe a practical implementation that uses structure in the CRF gradient to reduce the memory requirement of this linearly-convergent stochastic gradient method, propose a non-uniform sampling scheme that substantially improves practical performance, and analyze the rate of convergence of the SAGA variant under non-uniform sampling. Our experimental results reveal that our method often significantly outperforms existing methods in terms of the training objective, and performs as well or better than optimally-tuned stochastic gradient methods in terms of test error. Read More

To assess the performance of caching systems, the definition of a proper process describing the content requests generated by users is required. Starting from the analysis of traces of YouTube video requests collected inside operational networks, we identify the characteristics of real traffic that need to be represented and those that instead can be safely neglected. Based on our observations, we introduce a simple, parsimonious traffic model, named Shot Noise Model (SNM), that allows us to capture temporal and geographical locality of content popularity. Read More

High fidelity quantum information transport is necessary for most practical models of quantum computation. By analogy with optical wave guides, a spatio-temporally varying magnetic potential on a one dimensional spin chain can achieve high fidelity transport of spin excitations. By comparing different potential shapes, we establish the effects of potential shape on the fidelity and transport speed. Read More

Transmission Control Protocol (TCP) carries most of the traffic on the Internet these days. There are several implementations of TCP, and the most important difference among them is their mechanism for controlling congestion. One of the methods for determining type of a TCP is active probing. Read More

Data will soon become one of the most precious treasures we have ever had, 43 trillion gigabytes of data will be created by 2020 according to a study made by Mckinsey Global Institute, it is estimated that 2.3 trillion gigabytes of data is created each day and most companies in the US have 100.000 gigabytes of data stored. Read More

2014Jun
Authors: A. J. Bevan, B. Golob, Th. Mannel, S. Prell, B. D. Yabsley, K. Abe, H. Aihara, F. Anulli, N. Arnaud, T. Aushev, M. Beneke, J. Beringer, F. Bianchi, I. I. Bigi, M. Bona, N. Brambilla, J. B rodzicka, P. Chang, M. J. Charles, C. H. Cheng, H. -Y. Cheng, R. Chistov, P. Colangelo, J. P. Coleman, A. Drutskoy, V. P. Druzhinin, S. Eidelman, G. Eigen, A. M. Eisner, R. Faccini, K. T . Flood, P. Gambino, A. Gaz, W. Gradl, H. Hayashii, T. Higuchi, W. D. Hulsbergen, T. Hurth, T. Iijima, R. Itoh, P. D. Jackson, R. Kass, Yu. G. Kolomensky, E. Kou, P. Križan, A. Kronfeld, S. Kumano, Y. J. Kwon, T. E. Latham, D. W. G. S. Leith, V. Lüth, F. Martinez-Vidal, B. T. Meadows, R. Mussa, M. Nakao, S. Nishida, J. Ocariz, S. L. Olsen, P. Pakhlov, G. Pakhlova, A. Palano, A. Pich, S. Playfer, A. Poluektov, F. C. Porter, S. H. Robertson, J. M. Roney, A. Roodman, Y. Sakai, C. Schwanda, A. J. Schwartz, R. Seidl, S. J. Sekula, M. Steinhauser, K. Sumisawa, E. S. Swanson, F. Tackmann, K. Trabelsi, S. Uehara, S. Uno, R. van der Water, G. Vasseur, W. Verkerke, R. Waldi, M. Z. Wang, F. F. Wilson, J. Zupan, A. Zupanc, I. Adachi, J. Albert, Sw. Banerjee, M. Bellis, E. Ben-Haim, P. Biassoni, R. N. Cahn, C. Cartaro, J. Chauveau, C. Chen, C. C. Chiang, R. Cowan, J. Dalseno, M. Davier, C. Davies, J. C. Dingfelder, B. Eche nard, D. Epifanov, B. G. Fulsom, A. M. Gabareen, J. W. Gary, R. Godang, M. T. Graham, A. Hafner, B. Hamilton, T. Hartmann, K. Hayasaka, C. Hearty, Y. Iwasaki, A. Khodjamirian, A. Kusaka, A. Kuzmin, G. D. Lafferty, A. Lazzaro, J. Li, D. Lindemann, O. Long, A. Lusiani, G. Marchiori, M. Martinelli, K. Miyabayashi, R. Mizuk, G. B. Mohanty, D. R. Muller, H. Nakazawa, P. Ongmongkolkul, S. Pacetti, F. Palombo, T. K. Pedlar, L. E. Piilonen, A. Pilloni, V. Poireau, K. Prothmann, T. Pulliam, M. Rama, B. N. Ratcliff, P. Roudeau, S. Schrenk, T. Schroeder, K. R. Schubert, C. P. Shen, B. Shwartz, A. Soffer, E. P. Solodov, A. Somov, M. Starič, S. Stracka, A. V. Telnov, K. Yu. Todyshev, T. Tsuboyama, T. Uglov, A. Vinokurova, J. J. Walsh, Y. Watanabe, E. Won, G. Wormser, D. H. Wright, S. Ye, C. C. Zhang, S. Abachi, A. Abashian, K. Abe, K. Abe, N. Abe, R. Abe, T. Abe, T. Abe, G. S. Abrams, I. Adam, K. Adamczyk, A. Adametz, T. Adye, A. Agarwal, H. Ahmed, M. Ahmed, S. Ahmed, B. S. Ahn, H. S. Ahn, I. J. R. Aitchison, K. Akai, S. Akar, M. Akatsu, M. Akemoto, R. Akhmetshin, R. Akre, M. S. Alam, J. N. Albert, R. Aleksan, J. P. Alexander, G. Alimonti, M. T. Allen, J. Allison, T. Allmendinger, J. R. G. Alsmiller, D. Altenburg, K. E. Alwyn, Q. An, J. Anderson, R. Andreassen, D. Andreotti, M. Andreotti, J. C. Andress, C. Angelini, D. Anipko, A. Anjomshoaa, P. L. Anthony, E. A. Antillon, E. Antonioli, K. Aoki, J. F. Arguin, K. Arinstein, K. Arisaka, K. Asai, M. Asai, Y. Asano, D. J. Asgeirsson, D. M. Asner, T. Aso, M. L. Aspinwall, D. Aston, H. Atmacan, B. Aubert, V. Aulchenko, R. Ayad, T. Azemoon, T. Aziz, V. Azzolini, D. E. Azzopardi, M. A. Baak, J. J. Back, S. Bagnasco, S. Bahinipati, D. S. Bailey, S. Bailey, P. Bailly, N. van Bakel, A. M. Bakich, A. Bala, V. Balagura, R. Baldini-Ferroli, Y. Ban, E. Banas, H. R. Band, S. Banerjee, E. Baracchini, R. Barate, E. Barberio, M. Barbero, D. J. Bard, T. Barillari, N. R. Barlow, R. J. Barlow, M. Barrett, W. Bartel, J. Bartelt, R. Bartoldus, G. Batignani, M. Battaglia, J. M. Bauer, A. Bay, M. Beaulieu, P. Bechtle, T. W. Beck, J. Becker, J. Becla, I. Bedny, S. Behari, P. K. Behera, E. Behn, L. Behr, C. Beigbeder, D. Beiline, R. Bell, F. Bellini, G. Bellodi, K. Belous, M. Benayoun, G. Benelli, J. F. Benitez, M. Benkebil, N. Berger, J. Bernabeu, D. Bernard, R. Bernet, F. U. Bernlochner, J. W. Berryhill, K. Bertsche, P. Besson, D. S. Best, S. Bettarini, D. Bettoni, V. Bhardwaj, W. Bhimji, B. Bhuyan, B. Bhuyan, M. E. Biagini, M. Biasini, K. van Bibber, J. Biesiada, I. Bingham, R. M. Bionta, M. Bischofberger, U. Bitenc, I. Bizjak, F. Blanc, G. Blaylock, V. E. Blinov, E. Bloom, P. C. Bloom, N. L. Blount, J. Blouw, M. Bly, S. Blyth, C. T. Boeheim, M. Bomben, A. Bondar, M. Bondioli, G. R. Bonneaud, G. Bonvicini, M. Booke, J. Booth, C. Borean, A. W. Borgland, E. Borsato, F. Bosi, L. Bosisio, A. A. Botov, J. Bougher, K. Bouldin, P. Bourgeois, D. Boutigny, D. A. Bowerman, A. M. Boyarski, R. F. Boyce, J. T. Boyd, A. Bozek, C. Bozzi, M. Bračko, G. Brandenburg, T. Brandt, B. Brau, J. Brau, A. B. Breon, D. Breton, C. Brew, H. Briand, P. G. Bright-Thomas, V. Brigljević, D. I. Britton, F. Brochard, B. Broomer, J. Brose, T. E. Browder, C. L. Brown, C. M. Brown, D. N. Brown, D. N. Brown, M. Browne, M. Bruinsma, S. Brunet, F. Bucci, C. Buchanan, O. L. Buchmueller, C. Bünger, W. Bugg, A. D. Bukin, R. Bula, H. Bulten, P. R. Burchat, W. Burgess, J. P. Burke, J. Button-Shafer, A. R. Buzykaev, A. Buzzo, Y. Cai, R. Calabrese, A. Calcaterra, G. Calderini, B. Camanzi, E. Campagna, C. Campagnari, R. Capra, V. Carassiti, M. Carpinelli, M. Carroll, G. Casarosa, B. C. K. Casey, N. M. Cason, G. Castelli, N. Cavallo, G. Cavoto, A. Cecchi, R. Cenci, G. Cerizza, A. Cervelli, A. Ceseracciu, X. Chai, K. S. Chaisanguanthum, M. C. Chang, Y. H. Chang, Y. W. Chang, D. S. Chao, M. Chao, Y. Chao, E. Charles, C. A. Chavez, R. Cheaib, V. Chekelian, A. Chen, A. Chen, E. Chen, G. P. Chen, H. F. Chen, J. -H. Chen, J. C. Chen, K. F. Chen, P. Chen, S. Chen, W. T. Chen, X. Chen, X. R. Chen, Y. Q. Chen, B. Cheng, B. G. Cheon, N. Chevalier, Y. M. Chia, S. Chidzik, K. Chilikin, M. V. Chistiakova, R. Cizeron, I. S. Cho, K. Cho, V. Chobanova, H. H. F. Choi, K. S. Choi, S. K. Choi, Y. Choi, Y. K. Choi, S. Christ, P. H. Chu, S. Chun, A. Chuvikov, G. Cibinetto, D. Cinabro, A. R. Clark, P. J. Clark, C. K. Clarke, R. Claus, B. Claxton, Z. C. Clifton, J. Cochran, J. Cohen-Tanugi, H. Cohn, T. Colberg, S. Cole, F. Colecchia, C. Condurache, R. Contri, P. Convert, M. R. Convery, P. Cooke, N. Copty, C. M. Cormack, F. Dal Corso, L. A. Corwin, F. Cossutti, D. Cote, A. Cotta Ramusino, W. N. Cottingham, F. Couderc, D. P. Coupal, R. Covarelli, G. Cowan, W. W. Craddock, G. Crane, H. B. Crawley, L. Cremaldi, A. Crescente, M. Cristinziani, J. Crnkovic, G. Crosetti, T. Cuhadar-Donszelmann, A. Cunha, S. Curry, A. D'Orazio, S. Dû, G. Dahlinger, B. Dahmes, C. Dallapiccola, N. Danielson, M. Danilov, A. Das, M. Dash, S. Dasu, M. Datta, F. Daudo, P. D. Dauncey, P. David, C. L. Davis, C. T. Day, F. De Mori, G. De Domenico, N. De Groot, C. De la Vaissière, Ch. de la Vaissière, A. de Lesquen, G. De Nardo, R. de Sangro, A. De Silva, S. DeBarger, F. J. Decker, P. del Amo Sanchez, L. Del Buono, V. Del Gamba, D. del Re, G. Della Ricca, A. G. Denig, D. Derkach, I. M. Derrington, H. DeStaebler, J. Destree, S. Devmal, B. Dey, B. Di Girolamo, E. Di Marco, M. Dickopp, M. O. Dima, S. Dittrich, S. Dittongo, P. Dixon, L. Dneprovsky, F. Dohou, Y. Doi, Z. Doležal, D. A. Doll, M. Donald, L. Dong, L. Y. Dong, J. Dorfan, A. Dorigo, M. P. Dorsten, R. Dowd, J. Dowdell, Z. Drásal, J. Dragic, B. W. Drummond, R. S. Dubitzky, G. P. Dubois-Felsmann, M. S. Dubrovin, Y. C. Duh, Y. T. Duh, D. Dujmic, W. Dungel, W. Dunwoodie, D. Dutta, A. Dvoretskii, N. Dyce, M. Ebert, E. A. Eckhart, S. Ecklund, R. Eckmann, P. Eckstein, C. L. Edgar, A. J. Edwards, U. Egede, A. M. Eichenbaum, P. Elmer, S. Emery, Y. Enari, R. Enomoto, E. Erdos, R. Erickson, J. A. Ernst, R. J. Erwin, M. Escalier, V. Eschenburg, I. Eschrich, S. Esen, L. Esteve, F. Evangelisti, C. W. Everton, V. Eyges, C. Fabby, F. Fabozzi, S. Fahey, M. Falbo, S. Fan, F. Fang, F. Fang, C. Fanin, A. Farbin, H. Farhat, J. E. Fast, M. Feindt, A. Fella, E. Feltresi, T. Ferber, R. E. Fernholz, S. Ferrag, F. Ferrarotto, F. Ferroni, R. C. Field, A. Filippi, G. Finocchiaro, E. Fioravanti, J. Firmino da Costa, P. -A. Fischer, A. Fisher, P. H. Fisher, C. J. Flacco, R. L. Flack, H. U. Flaecher, J. Flanagan, J. M. Flanigan, K. E. Ford, W. T. Ford, I. J. Forster, A. C. Forti, F. Forti, D. Fortin, B. Foster, S. D. Foulkes, G. Fouque, J. Fox, P. Franchini, M. Franco Sevilla, B. Franek, E. D. Frank, K. B. Fransham, S. Fratina, K. Fratini, A. Frey, R. Frey, M. Friedl, M. Fritsch, J. R. Fry, H. Fujii, M. Fujikawa, Y. Fujita, Y. Fujiyama, C. Fukunaga, M. Fukushima, J. Fullwood, Y. Funahashi, Y. Funakoshi, F. Furano, M. Furman, K. Furukawa, H. Futterschneider, E. Gabathuler, T. A. Gabriel, N. Gabyshev, F. Gaede, N. Gagliardi, A. Gaidot, J. -M. Gaillard, J. R. Gaillard, S. Galagedera, F. Galeazzi, F. Gallo, D. Gamba, R. Gamet, K. K. Gan, P. Gandini, S. Ganguly, S. F. Ganzhur, Y. Y. Gao, I. Gaponenko, A. Garmash, J. Garra Tico, I. Garzia, M. Gaspero, F. Gastaldi, C. Gatto, V. Gaur, N. I. Geddes, T. L. Geld, J. -F. Genat, K. A. George, M. George, S. George, Z. Georgette, T. J. Gershon, M. S. Gill, R. Gillard, J. D. Gilman, F. Giordano, M. A. Giorgi, P. -F. Giraud, L. Gladney, T. Glanzman, R. Glattauer, A. Go, K. Goetzen, Y. M. Goh, G. Gokhroo, P. Goldenzweig, V. B. Golubev, G. P. Gopal, A. Gordon, A. Gorišek, V. I. Goriletsky, R. Gorodeisky, L. Gosset, K. Gotow, S. J. Gowdy, P. Graffin, S. Grancagnolo, E. Grauges, G. Graziani, M. G. Green, M. G. Greene, G. J. Grenier, P. Grenier, K. Griessinger, A. A. Grillo, B. V. Grinyov, A. V. Gritsan, G. Grosdidier, M. Grosse Perdekamp, P. Grosso, M. Grothe, Y. Groysman, O. Grünberg, E. Guido, H. Guler, N. J. W. Gunawardane, Q. H. Guo, R. S. Guo, Z. J. Guo, N. Guttman, H. Ha, H. C. Ha, T. Haas, J. Haba, J. Hachtel, H. K. Hadavand, T. Hadig, C. Hagner, M. Haire, F. Haitani, T. Haji, G. Haller, V. Halyo, K. Hamano, H. Hamasaki, G. Hamel de Monchenault, J. Hamilton, R. Hamilton, O. Hamon, B. Y. Han, Y. L. Han, H. Hanada, K. Hanagaki, F. Handa, J. E. Hanson, A. Hanushevsky, K. Hara, T. Hara, Y. Harada, P. F. Harrison, T. J. Harrison, B. Harrop, A. J. Hart, P. A. Hart, B. L. Hartfiel, J. L. Harton, T. Haruyama, A. Hasan, Y. Hasegawa, C. Hast, N. C. Hastings, K. Hasuko, A. Hauke, C. M. Hawkes, K. Hayashi, M. Hazumi, C. Hee, E. M. Heenan, D. Heffernan, T. Held, R. Henderson, S. W. Henderson, S. S. Hertzbach, S. Hervé, M. Heß, C. A. Heusch, A. Hicheur, Y. Higashi, Y. Higasino, I. Higuchi, S. Hikita, E. J. Hill, T. Himel, L. Hinz, T. Hirai, H. Hirano, J. F. Hirschauer, D. G. Hitlin, N. Hitomi, M. C. Hodgkinson, A. Höcker, C. T. Hoi, T. Hojo, T. Hokuue, J. J. Hollar, T. M. Hong, K. Honscheid, B. Hooberman, D. A. Hopkins, Y. Horii, Y. Hoshi, K. Hoshina, S. Hou, W. S. Hou, T. Hryn'ova, Y. B. Hsiung, C. L. Hsu, S. C. Hsu, H. Hu, T. Hu, H. C. Huang, T. J. Huang, Y. C. Huang, Z. Huard, M. E. Huffer, D. Hufnagel, T. Hung, D. E. Hutchcroft, H. J. Hyun, S. Ichizawa, T. Igaki, A. Igarashi, S. Igarashi, Y. Igarashi, O. Igonkina, K. Ikado, H. Ikeda, H. Ikeda, K. Ikeda, J. Ilic, K. Inami, W. R. Innes, Y. Inoue, A. Ishikawa, A. Ishikawa, H. Ishino, K. Itagaki, S. Itami, K. Itoh, V. N. Ivanchenko, R. Iverson, M. Iwabuchi, G. Iwai, M. Iwai, S. Iwaida, M. Iwamoto, H. Iwasaki, M. Iwasaki, M. Iwasaki, T. Iwashita, J. M. Izen, D. J. Jackson, F. Jackson, G. Jackson, P. S. Jackson, R. G. Jacobsen, C. Jacoby, I. 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Zheng, Z. P. Zheng, V. Zhilich, P. Zhou, R. Y. Zhu, Y. S. Zhu, Z. M. Zhu, V. Zhulanov, T. Ziegler, V. Ziegler, G. Zioulas, M. Zisman, M. Zito, D. Zürcher, N. Zwahlen, O. Zyukova, T. Živko, D. Žontar

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Cross sections for \nuc{6}{Li}($\gamma$,$\gamma$)\nuc{6}{Li} have been measured at the High Intensity Gamma-Ray Source (\HIGS) and the sensitivity of these cross sections to the nucleon isoscalar polarizabilities was studied. Data were collected using a quasi-monoenergetic 86 MeV photon beam at photon scattering angles of 40$^{\circ}$--160$^{\circ}$. These results are an extension of a previous measurement at a lower energy. Read More

Analytic evaluation of heteroskedasticity consistent covariance matrix estimates (HCCME) is difficult because of the complexity of the formulae currently available. We obtain new analytic formulae for the bias of a class of estimators of the covariance matrix of OLS in a standard linear regression model. These formulae provide substantial insight into the properties and performance characteristics of these estimators. Read More

Map construction methods automatically produce and/or update road network datasets using vehicle tracking data. Enabled by the ubiquitous generation of georeferenced tracking data, there has been a recent surge in map construction algorithms coming from different computer science domains. A cross-comparison of the various algorithms is still very rare, since (i) algorithms and constructed maps are generally not publicly available and (ii) there is no standard approach to assess the result quality, given the lack of benchmark data and quantitative evaluation methods. Read More

The benefits that can be derived from reusing software include accelerated development, reduced cost, reduced risk and effective use of specialists. Reuse of software artifacts during the initial stages of software development increases reuse benefits, because it allows subsequent reuse of later stage artifacts derived from earlier artifacts. UML is the de facto modeling language used by software developers during the initial stages of software development such as requirements engineering, architectural and detailed design. Read More

Software is typically modeled from different viewpoints such as structural view, behavioral view and functional view. Few existing works can be considered as applying multi-view retrieval approaches. A number of important issues regarding mapping of entities during multi-view retrieval of UML models is identified in this study. Read More

Software reuse allows the software industry to simultaneously reduce development cost and improve product quality. Reuse of early-stage artifacts has been acknowledged to be more beneficial than reuse of later-stage artifacts. In this regard, early-stage reference models have been considered as good tools to allow reuse across applications within the same domain. Read More

Analysis and design phases are the most crucial part of the software development life-cycle. Reusing the artifacts of these early phases is very beneficial to improve the productivity and software quality. In this paper we analyze the literature on the automatic transformation of artifacts from the problem space (i. Read More

Energy-efficient communication is an important issue in wireless sensor networks (WSNs) consisting of large number of energy-constrained sensor nodes. Indeed, sensor nodes have different energy budgets assigned to data transmission at individual nodes. Therefore, without energy-aware transmission schemes, energy can deplete from sensor nodes with smaller energy budget faster than from the rest of the sensor nodes in WSNs. Read More

We have investigated the volume collapse occurring in LaMnO3 unit cell using the anisotropic Potts model modified by two types of anisotropic interactions which has been used to study the change of Mn-O bonds lengths as function of temperature. The bond lengths are related to the occupation of the orbits. The lattice parameters and the distortion modes have been investigated as well. Read More

Conventional block-based multicast authentication schemes overlook the heterogeneity of receivers by letting the sender choose the block size, divide a multicast stream into blocks, associate each block with a signature, and spread the effect of the signature across all the packets in the block through hash graphs or coding algorithms. The correlation among packets makes them vulnerable to packet loss, which is inherent in the Internet and wireless networks. Moreover, the lack of Denial of Service (DoS) resilience renders most of them vulnerable to packet injection in hostile environments. Read More

The rate of disability is increase day by day all over the world .There are various type of Disabilities but the deaf persons are on second number among all types of disabilities.. Read More

2013Oct
Affiliations: 1York University, Toronto, Canada, 2York University, Toronto, Canada, 3York University, Toronto, Canada, 4York University, Toronto, Canada

At first blush, what appears to be a purely physical question to measure any velocity: how to measure the velocity on a one-way trip? However, due to the debates of the clock-synchronization and the successes of Special Relativity (SR), searching of the possibility of one-way speed of light measurement did not receive wider attention since the declaration of the constancy of the speed of light in vacuum by Maxwell's Electrodynamics in 1864. However, our analysis suggests that the debates of the clock synchronization are insignificant when one uses a one-way experiment to test the isotropy of the speed of light - the fundamental postulate of SR. Searching of the possibility of one-way speed of light to test SR is introduced by reviewing recent one-way tests. Read More

2013Oct
Affiliations: 1York University, Toronto, Canada, 2York University, Toronto, Canada, 3York University, Toronto, Canada, 4York University, Toronto, Canada

This paper presents the outcome of an experiment based on an improved version of Fizeau's coupled-slotted-discs that tests the fundamental postulates of Special Relativity for the one-way speed of light propagation. According to our methodology, important phenomena - a limit on and the diurnal regularity of the variation of the speed of light due to the movements of the Earth (assuming that the speed of light follows a Galilean transformation) - can be tested by the present experiment. However, these measurements do not indicate any significant diurnal variation. Read More

Comparing two geometric graphs embedded in space is important in the field of transportation network analysis. Given street maps of the same city collected from different sources, researchers often need to know how and where they differ. However, the majority of current graph comparison algorithms are based on structural properties of graphs, such as their degree distribution or their local connectivity properties, and do not consider their spatial embedding. Read More

We discuss the scientific motivation, possible experiments, and beam requirements for measurements of parity violation in photonuclear reactions at an intensity upgraded HIGS facility, HIGS2. Read More

In this work the tight binding model calculations are carried out for AA-Bilayer Graphene nanoribbons as an example of bilayer systems. The effects of edges, NNN hopping, and impurities of a single layer are introduced numerically as a change in the elements of the relevant block diagonal matrix appearing in the direct diagonalization method. The direct interlayer hopping between the top and the bottom single layers is constructed in the generalized direct diagonalization method by the off-diagonal block matrices in which the strength of the interlayer hopping is included. Read More

The electronic structures and properties of 2-oxazolidinone and the related compound cycloserine (CS) have been investigated using core and valence photoelectron spectroscopy and theoretical calculations. Isomerization of the central oxazolidine heterocycle and the addition of an amino group yields cycloserine. Theory correctly predicts the C, N and O 1s core spectra, and additionally we report theoretical natural bond orbital (NBO) charges. Read More

The dimensioning of caching systems represents a difficult task in the design of infrastructures for content distribution in the current Internet. This paper addresses the problem of defining a realistic arrival process for the content requests generated by users, due its critical importance for both analytical and simulative evaluations of the performance of caching systems. First, with the aid of YouTube traces collected inside operational residential networks, we identify the characteristics of real traffic that need to be considered or can be safely neglected in order to accurately predict the performance of a cache. Read More

The conformational and vibrational properties of 6-azaCytidine (6-azaC) and Cytidine (Cyt) have been studied in gas phase and aqueous environment. The two most stable conformers of each molecule have been identified and investigated in more details. The stability order of the two most stable conformers of both molecules is changing going from gas phase to solution. Read More

Starting from the lead structure we have identified in our previous works, we are extending our insight understanding of its potential inhibitory effect against both EGFR and HER2 receptors. Herein and using extended molecular dynamic simulations and different scoring techniques, we are providing plausible explanations for the observed inhibitory effect. Also, we are comparing the binding mechanism in addition to the dynamics of binding with two other approved inhibitors against EGFR (Lapatinib) and HER2 (SYR). Read More

The adsorption of cytosine on the Au(111) and Au(110) surfaces has been studied using both aqueous deposition and evaporation in vacuum to prepare the samples. Soft X-ray photoelectron spectroscopy (XPS) and near edge X-ray absorption fine structure spectroscopy (NEXAFS) were used to determine the electronic structure and orientation of the adsorbates. In addition, three derivatives of cytosine, 6-azacytosine, 6-azacytidine and 5- azacytidine, were studied. Read More

In the present study, the origin of the anti-quorum sensing (QS) activities of several members of a recently synthesized and in vitro tested class of lactone and thiolactone based inhibitors were computationally investigated. Docking and molecular dynamic (MD) simulations and binding free energy calculations were carried out to reveal the exact binding and inhibitory profiles of these compounds. The higher in vitro activity of the lactone series relative to their thiolactone isosteres was verified based on estimating the binding energies, the docking scores and monitoring the stability of the complexes produced in the MD simulations. Read More

We address the distributed estimation of an unknown scalar parameter in Wireless Sensor Networks (WSNs). Sensor nodes transmit their noisy observations over multiple access channel to a Fusion Center (FC) that reconstructs the source parameter. The received signal is corrupted by noise and channel fading, so that the FC objective is to minimize the Mean-Square Error (MSE) of the estimate. Read More