WorldWideScience

Sample records for hurst zc lunnon

  1. Zc(3900: What has been really seen?

    Directory of Open Access Journals (Sweden)

    Miguel Albaladejo

    2016-04-01

    Full Text Available The Zc±(3900/Zc±(3885 resonant structure has been experimentally observed in the Y(4260→J/ψππ and Y(4260→D¯⁎Dπ decays. This structure is intriguing since it is a prominent candidate of an exotic hadron. Yet, its nature is unclear so far. In this work, we simultaneously describe the D¯⁎D and J/ψπ invariant mass distributions in which the Zc peak is seen using amplitudes with exact unitarity. Two different scenarios are statistically acceptable, where the origin of the Zc state is different. They correspond to using energy dependent or independent D¯⁎D S-wave interaction. In the first one, the Zc peak is due to a resonance with a mass around the DD¯⁎ threshold. In the second one, the Zc peak is produced by a virtual state which must have a hadronic molecular nature. In both cases the two observations, Zc±(3900 and Zc±(3885, are shown to have the same common origin, and a D¯⁎D bound state solution is not allowed. Precise measurements of the line shapes around the DD¯⁎ threshold are called for in order to understand the nature of this state.

  2. Hurst Exponent Analysis of Financial Time Series

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Statistical properties of stock market time series and the implication of their Hurst exponents are discussed. Hurst exponents of DJ1A (Dow Jones Industrial Average) components are tested using re-scaled range analysis. In addition to the original stock return series, the linear prediction errors of the daily returns are also tested. Numerical results show that the Hurst exponent analysis can provide some information about the statistical properties of the financial time series.

  3. Radiative and dilepton decays of the hadronic molecule Zc(3900)+

    CERN Document Server

    Gutsche, Thomas; Lyubovitskij, Valery E

    2014-01-01

    The newly observed hidden-charm meson Zc(3900) with quantum numbers J(P) = 1(+) is considered as a hadronic molecule composed of DD*. We give detailed predictions for the decay modes Zc(+) -> J/psi + pi(+) + gamma and Zc(+) -> J/psi + pi(+) + l(+) + l(-) (l = e, mu) in a phenomenological Lagrangian approach.

  4. Hurst Parameter Estimation Using Artificial Neural Networks

    Directory of Open Access Journals (Sweden)

    S..Ledesma-Orozco

    2011-08-01

    Full Text Available The Hurst parameter captures the amount of long-range dependence (LRD in a time series. There are severalmethods to estimate the Hurst parameter, being the most popular: the variance-time plot, the R/S plot, theperiodogram, and Whittle’s estimator. The first three are graphical methods, and the estimation accuracy depends onhow the plot is interpreted and calculated. In contrast, Whittle’s estimator is based on a maximum likelihood techniqueand does not depend on a graph reading; however, it is computationally expensive. A new method to estimate theHurst parameter is proposed. This new method is based on an artificial neural network. Experimental results showthat this method outperforms traditional approaches, and can be used on applications where a fast and accurateestimate of the Hurst parameter is required, i.e., computer network traffic control. Additionally, the Hurst parameterwas computed on series of different length using several methods. The simulation results show that the proposedmethod is at least ten times faster than traditional methods.

  5. Using Digital Filtration for Hurst Parameter Estimation

    Directory of Open Access Journals (Sweden)

    J. Prochaska

    2009-06-01

    Full Text Available We present a new method to estimate the Hurst parameter. The method exploits the form of the autocorrelation function for second-order self-similar processes and is based on one-pass digital filtration. We compare the performance and properties of the new method with that of the most common methods.

  6. Analysis list: Zc3h11a [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Zc3h11a Blood,Pluripotent stem cell + mm9 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Zc3...h11a.1.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/target/Zc3h11a.5.tsv http://dbarch...ive.biosciencedbc.jp/kyushu-u/mm9/target/Zc3h11a.10.tsv http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Zc3...h11a.Blood.tsv,http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/colo/Zc3h11a.Plu

  7. The Hurst exponent in energy futures prices

    Science.gov (United States)

    Serletis, Apostolos; Rosenberg, Aryeh Adam

    2007-07-01

    This paper extends the work in Elder and Serletis [Long memory in energy futures prices, Rev. Financial Econ., forthcoming, 2007] and Serletis et al. [Detrended fluctuation analysis of the US stock market, Int. J. Bifurcation Chaos, forthcoming, 2007] by re-examining the empirical evidence for random walk type behavior in energy futures prices. In doing so, it uses daily data on energy futures traded on the New York Mercantile Exchange, over the period from July 2, 1990 to November 1, 2006, and a statistical physics approach-the ‘detrending moving average’ technique-providing a reliable framework for testing the information efficiency in financial markets as shown by Alessio et al. [Second-order moving average and scaling of stochastic time series, Eur. Phys. J. B 27 (2002) 197-200] and Carbone et al. [Time-dependent hurst exponent in financial time series. Physica A 344 (2004) 267-271; Analysis of clusters formed by the moving average of a long-range correlated time series. Phys. Rev. E 69 (2004) 026105]. The results show that energy futures returns display long memory and that the particular form of long memory is anti-persistence.

  8. Analysis of the X(3872), Zc(3900), and Zc(3885) as axial-vector tetraquark states with QCD sum rules

    Science.gov (United States)

    Wang, Zhi-Gang; Huang, Tao

    2014-03-01

    In this article, we distinguish the charge conjunctions of the interpolating currents, calculate the contributions of the vacuum condensates up to dimension 10 in a consistent way in the operator product expansion, study the masses and pole residues of the JPC=1+± hidden charmed tetraquark states with the QCD sum rules, and explore the energy-scale dependence in detail for the first time. The predictions MX=3.87-0.09+0.09 GeV and MZ=3.91-0.09+0.11 GeV support assigning the X(3872) and Zc(3900) [or Zc(3885)] as the 1++ and 1+- diquark-antidiquark type tetraquark states, respectively.

  9. $Z_c(3900)$: what has been really seen?

    CERN Document Server

    Albaladejo, Miguel; Hidalgo-Duque, Carlos; Nieves, Juan

    2015-01-01

    The $Z^\\pm_c(3900)/Z^\\pm_c(3885)$ resonant structure has been experimentally observed in the $Y(4260) \\to J/\\psi \\pi\\pi$ and $Y(4260) \\to \\bar{D}^\\ast D \\pi$ decays. This structure is intriguing since it is a prominent candidate of an exotic hadron. Yet, its nature is unclear so far. In this work, we simultaneously describe the $\\bar{D}^\\ast D$ and $J/\\psi \\pi$ invariant mass distributions in which the $Z_c$ peak is seen using amplitudes with exact unitarity. Two different scenarios are statistically acceptable, where the origin of the $Z_c$ state is different. They correspond to using energy dependent or independent $\\bar D^* D$ $S$-wave interaction. In the first one, the $Z_c$ peak is due to a resonance with a mass around the $D\\bar D^*$ threshold. In the second one, the $Z_c$ peak is produced by a virtual state which must have a hadronic molecular nature. In both cases the two observations, $Z^\\pm_c(3900)$ and $Z^\\pm_c(3885)$, are shown to have the same common origin, and a $\\bar D^* D$ bound state solutio...

  10. Electromagnetic Structure of the Z_c(3900)

    CERN Document Server

    Wilbring, E; Meißner, U -G

    2013-01-01

    The observation of the exotic quarkonium state Z_c(3900) by the BESIII collaboration supports the concept of hadronic molecules. Charmonium states interpreted as such molecules would be bound states of heavy particles with small binding energies. This motivates their description using an effective theory with contact interactions. In particular, we focus on the electromagnetic structure of the charged state Z_c(3900). Using first experimental results concerning spin and parity, we interpret it as an S-wave molecule and calculate the form factors as well as charge and magnetic radii up to next-to-leading order. We also present first numerical estimations of some of these observables at leading order.

  11. Study of the $Z_c^+$ channel in lattice QCD

    Energy Technology Data Exchange (ETDEWEB)

    Leskovec, Luka [Stefan Inst., Ljubljana; Prelovsek, Sasa [Stefan Inst., Ljubljana; Lang, C. B. [Graz U.; Mohler, Daniel [Fermilab

    2015-04-11

    Several charged charmonium-like hadrons called $Z_c$ have been recently discovered by different experiments. In contrast to conventional hadrons these contain at least two valence quarks and antiquarks ($\\bar{c}c\\bar{d}u$). We perform a lattice QCD simulation of the $I^G(J^{PC})=1^+(1^{+-})$ channel including all relevant two-meson operators under 4.3 GeV: $J/\\psi \\pi$, $\\psi_{2S}\\pi$, $\\psi_{1D}\\pi$, $D \\bar{D}^*$, $D^* \\bar{D}^*$, $\\eta_c \\rho$ as well as additional diquark anti-diquark operators. In our $N_f = 2$ simulation with pion mass at 266 MeV we are able to identify all two-meson levels within the energy region of interest. However we find no additional level identifiable as a candidate for $Z_c$.

  12. Fate of the Tetraquark Candidate Zc(3900) in Lattice QCD

    CERN Document Server

    Ikeda, Yoichi; Doi, Takumi; Gongyo, Shinya; Hatsuda, Tetsuo; Inoue, Takashi; Iritani, Takumi; Ishii, Noriyoshi; Murano, Keiko; Sasaki, Kenji

    2016-01-01

    The possible exotic meson $Z_{c}(3900)$, found in $e^+ e^-$ reactions, is studied by the method of coupled-channel scattering in lattice QCD. The interaction among $\\pi J/\\psi$, $\\rho \\eta_{c}$ and $\\bar{D}D^{*}$ channels is derived from (2+1)-flavor QCD simulations at $m_{\\pi}=410$-$700$ MeV. The interaction is dominated by the off-diagonal $\\pi J/\\psi$-$\\bar{D}D^{*}$ and $\\rho \\eta_{c}$-$\\bar{D}D^{*}$ couplings, which indicates that the $Z_{c}(3900)$ is not a usual resonance but a threshold cusp. Semi-phenomenological analyses with the coupled-channel interaction are presented to confirm this conclusion.

  13. Contribution of the LHT Model to Zc-c Coupling

    Institute of Scientific and Technical Information of China (English)

    WANG Ya-Bin; LI Xiang-Dong; HAN Jin-Zhong; YANG Bing-Fang

    2011-01-01

    In the littlest Higgs model with T-parity (LHT), some new particles, such as the T-odd mirror quarks and goldstone bosons, can contribute to various observables. We calculate their contribution to Ze(c) coupling. Some observables are related to Zc(c) coupling, for example, the effective vector and axial-vector Ze(c) coupling constants (9Vc,9Ac) and c-quark forward-backward asymmetry (AFBc). We give our predictions about 9Vc,9Ac in the LHT model and show the allowed regions of the mirror quark masses based on the experimental data of 9Vc-9Ac. Then, we present an explanation of AFBc.%In the littlest Higgs model with T-parity (LHT),some new particles,such as the T-odd mirror quarks and goldstone bosons,can contribute to various observables.We calculate their contribution to Zc-c coupling.Some observables are related to Zc-c coupling,for example,the effective vector and axial-vector Zc-c coupling constants (gVc,gAc) and c-quark forward-backward asymmetry (AcFB).We give our predictions about gVc,gAc in the LHT model and show the allowed regions of the mirror quark masses based on the experimental data of gVc - gAc.Then,we present an explanation of AcFB.The littlest Higgs (LH) model[1] is an economical implementation of the little Higgs model[2,3] which was proposed as a possible approach to solve the little hierarchy problem.[4] It was soon realized that such a model suffers severe constraints due to the precision electroweak measurements.[5-8] The most serious constraints resulted from the tree-level contributions to the precision electroweak observables by the exchange of additional heavy gauge bosons in the theory.

  14. Estimation of Hurst Exponent for the Financial Time Series

    Science.gov (United States)

    Kumar, J.; Manchanda, P.

    2009-07-01

    Till recently statistical methods and Fourier analysis were employed to study fluctuations in stock markets in general and Indian stock market in particular. However current trend is to apply the concepts of wavelet methodology and Hurst exponent, see for example the work of Manchanda, J. Kumar and Siddiqi, Journal of the Frankline Institute 144 (2007), 613-636 and paper of Cajueiro and B. M. Tabak. Cajueiro and Tabak, Physica A, 2003, have checked the efficiency of emerging markets by computing Hurst component over a time window of 4 years of data. Our goal in the present paper is to understand the dynamics of the Indian stock market. We look for the persistency in the stock market through Hurst exponent and fractal dimension of time series data of BSE 100 and NIFTY 50.

  15. Time-varying Hurst exponent for US stock markets

    Science.gov (United States)

    Alvarez-Ramirez, Jose; Alvarez, Jesus; Rodriguez, Eduardo; Fernandez-Anaya, Guillermo

    2008-10-01

    In this work, the dynamical behavior of the US stock markets is characterized on the basis of the temporal variations of the Hurst exponent estimated with detrended fluctuation analysis (DFA) over moving windows for the historical Dow Jones (1928-2007) and the S&P-500 (1950-2007) daily indices. According to the results drawn: (i) the Hurst exponent displays an erratic dynamics with some episodes alternating low and high persistent behavior, (ii) the major breakthrough of the long-term trend of the scaling behavior occurred in 1972, at the end of the Bretton Woods system, when the Hurst exponent shifted form a positive to a negative long-term trend. Other effects, such as the 1987 crisis and the emergence of anti-correlated behavior in the recent two years, are also discussed.

  16. Z_c(3900): confronting theory and lattice simulations

    Science.gov (United States)

    Albaladejo, Miguel; Fernandez-Soler, Pedro; Nieves, Juan

    2016-10-01

    We consider a recent T-matrix analysis by Albaladejo et al. (Phys Lett B 755:337, 2016), which accounts for the J/ψ π and D^*bar{D} coupled-channels dynamics, and which successfully describes the experimental information concerning the recently discovered Z_c(3900)^± . Within such scheme, the data can be similarly well described in two different scenarios, where Z_c(3900) is either a resonance or a virtual state. To shed light into the nature of this state, we apply this formalism in a finite box with the aim of comparing with recent Lattice QCD (LQCD) simulations. We see that the energy levels obtained for both scenarios agree well with those obtained in the single-volume LQCD simulation reported in Prelovsek et al. (Phys Rev D 91:014504, 2015), thus making it difficult to disentangle the two possibilities. We also study the volume dependence of the energy levels obtained with our formalism and suggest that LQCD simulations performed at several volumes could help in discerning the actual nature of the intriguing Z_c(3900) state.

  17. Clustering of Casablanca stock market based on hurst exponent estimates

    Science.gov (United States)

    Lahmiri, Salim

    2016-08-01

    This paper deals with the problem of Casablanca Stock Exchange (CSE) topology modeling as a complex network during three different market regimes: general trend characterized by ups and downs, increasing trend, and decreasing trend. In particular, a set of seven different Hurst exponent estimates are used to characterize long-range dependence in each industrial sector generating process. They are employed in conjunction with hierarchical clustering approach to examine the co-movements of the Casablanca Stock Exchange industrial sectors. The purpose is to investigate whether cluster structures are similar across variable, increasing and decreasing regimes. It is observed that the general structure of the CSE topology has been considerably changed over 2009 (variable regime), 2010 (increasing regime), and 2011 (decreasing regime) time periods. The most important findings follow. First, in general a high value of Hurst exponent is associated to a variable regime and a small one to a decreasing regime. In addition, Hurst estimates during increasing regime are higher than those of a decreasing regime. Second, correlations between estimated Hurst exponent vectors of industrial sectors increase when Casablanca stock exchange follows an upward regime, whilst they decrease when the overall market follows a downward regime.

  18. Amplitude analysis and the nature of the Zc(3900)

    Science.gov (United States)

    Pilloni, A.; Fernández-Ramírez, C.; Jackura, A.; Mathieu, V.; Mikhasenko, M.; Nys, J.; Szczepaniak, A. P.

    2017-09-01

    The microscopic nature of the XYZ states remains an unsettled topic. We show how a thorough amplitude analysis of the data can help constraining models of these states. Specifically, we consider the case of the Zc (3900) peak and discuss possible scenarios of a QCD state, virtual state, or a kinematical enhancement. We conclude that current data are not precise enough to distinguish between these hypotheses, however, the method we propose, when applied to the forthcoming high-statistics measurements should shed light on the nature of these exotic enhancements.

  19. $Z_c(3900)$: Confronting theory and lattice simulations

    CERN Document Server

    Albaladejo, M; Fernandez-Soler, P

    2016-01-01

    We consider a recent $T$-matrix analysis by Albaladejo {\\it et al.}, [Phys.\\ Lett.\\ B {\\bf 755}, 337 (2016)] which accounts for the $J/\\psi\\pi$ and $D^\\ast\\bar{D}$ coupled--channels dynamics, and that successfully describes the experimental information concerning the recently discovered $Z_c(3900)^\\pm$. Within such scheme, the data can be similarly well described in two different scenarios, where the $Z_c(3900)$ is either a resonance or a virtual state. To shed light into the nature of this state, we apply this formalism in a finite box with the aim of comparing with recent Lattice QCD (LQCD) simulations. We see that the energy levels obtained for both scenarios agree well with those obtained in the single-volume LQCD simulation reported in Prelovsek {\\it et al.} [Phys.\\ Rev.\\ D {\\bf 91}, 014504 (2015)], making thus difficult to disentangle between both possibilities. We also study the volume dependence of the energy levels obtained with our formalism, and suggest that LQCD simulations performed at several vo...

  20. Evaluating maximum likelihood estimation methods to determine the hurst coefficients

    Science.gov (United States)

    Kendziorski, C. M.; Bassingthwaighte, J. B.; Tonellato, P. J.

    1999-12-01

    A maximum likelihood estimation method implemented in S-PLUS ( S-MLE) to estimate the Hurst coefficient ( H) is evaluated. The Hurst coefficient, with 0.5long memory time series by quantifying the rate of decay of the autocorrelation function. S-MLE was developed to estimate H for fractionally differenced (fd) processes. However, in practice it is difficult to distinguish between fd processes and fractional Gaussian noise (fGn) processes. Thus, the method is evaluated for estimating H for both fd and fGn processes. S-MLE gave biased results of H for fGn processes of any length and for fd processes of lengths less than 2 10. A modified method is proposed to correct for this bias. It gives reliable estimates of H for both fd and fGn processes of length greater than or equal to 2 11.

  1. Pion-induced production of the $Z_c(3900)$ off nuclear target

    CERN Document Server

    Huang, Yin; Liu, Xiang; Zhang, Hong Fei; Xie, Ju Jun; Chen, Xu Rong

    2015-01-01

    We investigate the possibility to study the charmonium-like state $Z_c(3900)$ through the pion-induced production off nuclear target. By using high-energy pion beam, the $Z_c(3900)$ can be produced off proton or nucleus though the Primakoff effect. The production amplitude is calculated in an effective Lagrangian approach combined with the vector dominance model. The total cross sections of the $p(\\pi^-, Z^-_c(3900))$ and $p(\\pi^-, Z^-_c(3900)\\to J/\\psi\\pi^-)$ reactions are calculated, which order of magnitude is about 0.1 and 0.01nb, respectively, with an assumption of branch ratio 10\\% for the $Z_c(3900)$ decay in $J/\\psi\\pi$ channel. If proton target is replaced by nuclear target, the production of the $Z_c(3900)$ enhances obviously. The predicted total cross sections for the $A(\\pi^-, Z^-_c(3900))$ and $A(\\pi^-, Z^-_c(3900)\\to J/\\psi\\pi^-)$ reactions with $A=^{12}$C or $^{208}$Pb are on the order of magnitude of 100 and 10 nb, respectively, which is about one thousand times larger than the cross sections ...

  2. Reanalysis of the Zc(4020), Zc(4025), Z(4050) and Z(4250) as Tetraquark States with QCD Sum Rules

    Science.gov (United States)

    Wang, Zhi-Gang

    2015-04-01

    In this article, we calculate the contributions of the vacuum condensates up to dimension-10 in the operator product expansion, and study the Cγμ — Cγν type scalar, axial-vector and tensor tetraquark states in details with the QCD sum rules. In calculations, we use the formula to determine the energy scales of the QCD spectral densities. The predictions MJ=2 = ({4.02}+0.09-0.09)GeV, MJ=1 =(4.02+0.07-0.08)GeV favor assigning the Zc(4020) and Zc(4025) as the JPC = 1+- or 2++ diquark-antidiquark type tetraquark states, while the prediction MJ=0 = (3.85+0.15-0.09)GeV disfavors assigning the Z(4050) and Z(4250) as the JPC = 0++ diquark-antidiquark type tetraquark states. Furthermore, we discuss the strong decays of the 0++, 1+-, 2++ diquark-antidiquark type tetraquark states in details. Supported by National Natural Science Foundation of Chian under Grant No. 11375063, and Natural Science Foundation of Hebei Province under Grant No. A2014502017

  3. Revisiting the Decision of Death in Hurst v. Florida.

    Science.gov (United States)

    Cooke, Brian K; Ginory, Almari; Zedalis, Jennifer

    2016-12-01

    The United States Supreme Court has considered the question of whether a judge or a jury must make the findings necessary to support imposition of the death penalty in several notable cases, including Spaziano v. Florida (1984), Hildwin v. Florida (1989), and Ring v. Arizona (2002). In 2016, the U.S. Supreme Court revisited the subject in Hurst v. Florida Florida Statute § 921.141 allows the judge, after weighing aggravating and mitigating circumstances, to enter a sentence of life imprisonment or death. Before Hurst, Florida's bifurcated sentencing proceedings included an advisory sentence from jurors and a separate judicial hearing without juror involvement. In Hurst, the Court revisited the question of whether Florida's capital sentencing scheme violates the Sixth Amendment, which requires a jury, not a judge, to find each fact necessary to impose a sentence of death in light of Ring In an eight-to-one decision, the Court reversed the judgment of the Florida Supreme Court, holding that the Sixth Amendment requires a jury to find the aggravating factors necessary for imposing the death penalty. The role of Florida juries in capital sentencing proceedings was thereby elevated from advisory to determinative. We examine the Court's decision and offer commentary regarding this shift from judge to jury in the final imposition of the death penalty and the overall effect of this landmark case.

  4. File list: Oth.PSC.20.Zc3h11a.AllCell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.PSC.20.Zc3h11a.AllCell mm9 TFs and others Zc3h11a Pluripotent stem cell SRX1888...30 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.PSC.20.Zc3h11a.AllCell.bed ...

  5. Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c

    CERN Document Server

    Ablikim, M; Albayrak, O; Ambrose, D J; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Becker, J; Bennett, J V; Bertani, M; Bian, J M; Boger, E; Bondarenko, O; Boyko, I; Braun, S; Briere, R A; Bytev, V; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, J C; Chen, M L; Chen, S J; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Chu, Y P; Cronin-Hennessy, D; Dai, H L; Dai, J P; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; Ding, W M; Ding, Y; Dong, L Y; Dong, M Y; Du, S X; Fang, J; Fang, S S; Fava, L; Feng, C Q; Friedel, P; Fu, C D; Fu, J L; Fuks, O; Gao, Y; Geng, C; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, T; Guo, Y P; Han, Y L; Harris, F A; He, K L; He, M; He, Z Y; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Huang, G M; Huang, G S; Huang, J S; Huang, L; Huang, X T; Huang, Y; Hussain, T; Ji, C S; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, X S; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Jing, F F; Kalantar-Nayestanaki, N; Kavatsyuk, M; Kloss, B; Kopf, B; Kornicer, M; Kuehn, W; Lai, W; Lange, J S; Lara, M; Larin, P; Leyhe, M; Li, C H; Li, Cheng; Li, Cui; Li, D L; Li, D M; Li, F; Li, G; Li, H B; Li, J C; Li, K; Li, Lei; Li, N; Li, P R; Li, Q J; Li, W D; Li, W G; Li, X L; Li, X N; Li, X Q; Li, X R; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Lin, D X; Liu, B J; Liu, C L; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H B; Liu, H H; Liu, H M; Liu, J P; Liu, K; Liu, K Y; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, Y B; Liu, Z A; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, G R; Lu, H J; Lu, J G; Lu, X R; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lv, M; Ma, F C; Ma, H L; Ma, Q M; Ma, S; Ma, T; Ma, X Y; Maas, F E; Maggiora, M; Malik, Q A; Mao, Y J; Mao, Z P; Messchendorp, J G; Min, J; Min, T J; Mitchell, R E; Mo, X H; Moeini, H; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nikolaev, I B; Ning, Z; Nisa, S; Olsen, S L; Ouyang, Q; Pacetti, S; Park, J W; Pelizaeus, M; Peng, H P; Peters, K; Ping, J L; Ping, R G; Poling, R; Prencipe, E; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, X S; Qin, Y; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Ripka, M; Rong, G; Ruan, X D; Sarantsev, A; Schumann, S; Shan, W; Shao, M; Shen, C P; Shen, X Y; Sheng, H Y; Shepherd, M R; Song, W M; Song, X Y; Spataro, S; Spruck, B; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Toth, D; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, Q J; Wang, S G; Wang, X F; Wang, X L; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z H; Wang, Z Y; Wei, D H; Wei, J B; Weidenkaff, P; Wen, Q G; Wen, S P; Werner, M; Wiedner, U; Wu, L H; Wu, N; Wu, S X; Wu, W; Wu, Z; Xia, L G; Xia, Y X; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, Q J; Xu, Q N; Xu, X P; Xu, Z R; Xue, Z; Yan, L; Yan, W B; Yan, W C; Yan, Y H; Yang, H X; Yang, Y; Yang, Y X; Yang, Y Z; Ye, H; Ye, M; Ye, M H; Yu, B X; Yu, C X; Yu, H W; Yu, J S; Yu, S P; Yuan, C Z; Yuan, W L; Yuan, Y; Zafar, A A; Zallo, A; Zang, S L; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C B; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, LiLi; Zhang, S H; Zhang, X J; Zhang, X Y; Zhang, Y; Zhang, Y H; Zhang, Z P; Zhang, Z Y; Zhang, Zhenghao; Zhao, G; Zhao, J W; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, S J; Zhao, T C; Zhao, X H; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, Y H; Zhong, B; Zhou, L; Zhou, X; Zhou, X K; Zhou, X R; Zhu, K; Zhu, K J; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, J; Zou, B S; Zou, J H

    2013-01-01

    We study e+e- --> pi+pi-h_c at center-of-mass energies from 3.90 GeV to 4.42 GeV using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections are measured at 13 energies, and are found to be of the same order of magnitude as those of e+e- --> pi+pi-J/psi but with a different line shape. In the \\pi^\\pm h_c mass spectrum, a distinct structure, referred to as Z_c(4020), is observed at 4.02 GeV/c^2. The Z_c(4020) carries an electric charge and couples to charmonium. A fit to the \\pi^\\pm h_c invariant mass spectrum, neglecting possible interferences, results in a mass of (4022.9\\pm 0.8\\pm 2.7) MeV/c^2 and a width of (7.9\\pm 2.7\\pm 2.6) MeV for the Z_c(4020), where the first errors are statistical and the second systematic. No significant Z_c(3900) signal is observed, and upper limits on the Z_c(3900) production cross sections in \\pi^\\pm h_c at center-of-mass energies of 4.23 and 4.26 GeV are set.

  6. Markov vs. Hurst-Kolmogorov behaviour identification in hydroclimatic processes

    Science.gov (United States)

    Dimitriadis, Panayiotis; Gournari, Naya; Koutsoyiannis, Demetris

    2016-04-01

    Hydroclimatic processes are usually modelled either by exponential decay of the autocovariance function, i.e., Markovian behaviour, or power type decay, i.e., long-term persistence (or else Hurst-Kolmogorov behaviour). For the identification and quantification of such behaviours several graphical stochastic tools can be used such as the climacogram (i.e., plot of the variance of the averaged process vs. scale), autocovariance, variogram, power spectrum etc. with the former usually exhibiting smaller statistical uncertainty as compared to the others. However, most methodologies including these tools are based on the expected value of the process. In this analysis, we explore a methodology that combines both the practical use of a graphical representation of the internal structure of the process as well as the statistical robustness of the maximum-likelihood estimation. For validation and illustration purposes, we apply this methodology to fundamental stochastic processes, such as Markov and Hurst-Kolmogorov type ones. Acknowledgement: This research is conducted within the frame of the undergraduate course "Stochastic Methods in Water Resources" of the National Technical University of Athens (NTUA). The School of Civil Engineering of NTUA provided moral support for the participation of the students in the Assembly.

  7. Search for exclusive photoproduction of Zc±(3900 at COMPASS

    Directory of Open Access Journals (Sweden)

    C. Adolph

    2015-03-01

    Full Text Available A search for the exclusive production of the Zc±(3900 hadron by virtual photons has been performed in the channel Zc±(3900→J/ψπ±. The data cover the range from 7 GeV to 19 GeV in the centre-of-mass energy of the photon–nucleon system. The full set of the COMPASS data set collected with a muon beam between 2002 and 2011 has been used. An upper limit for the ratio BR(Zc±(3900→J/ψπ±×σγN→Zc±(3900N/σγN→J/ψN of 3.7×10−3 has been established at the confidence level of 90%.

  8. Tetra-Quark Interpretation of X(3872) and Z_c(3900) Revisited

    CERN Document Server

    Terasaki, Kunihiko

    2016-01-01

    In relation to the newly observed bottom-strange X^{+,-}(5568) mesons, we revisit our tetra-quark interpretation of X(3872) and Z_c(3900). It is discussed that our assignment of X^{+,-}(5568) to charged components of iso-triplet bottom partners of D_{s0}^+(2317) is compatible with the revised version of our tetra-quark interpretation of X(3872) and Z_c(3900).

  9. Hurst exponent and prediction based on weak-form efficient market hypothesis of stock markets

    Science.gov (United States)

    Eom, Cheoljun; Choi, Sunghoon; Oh, Gabjin; Jung, Woo-Sung

    2008-07-01

    We empirically investigated the relationships between the degree of efficiency and the predictability in financial time-series data. The Hurst exponent was used as the measurement of the degree of efficiency, and the hit rate calculated from the nearest-neighbor prediction method was used for the prediction of the directions of future price changes. We used 60 market indexes of various countries. We empirically discovered that the relationship between the degree of efficiency (the Hurst exponent) and the predictability (the hit rate) is strongly positive. That is, a market index with a higher Hurst exponent tends to have a higher hit rate. These results suggested that the Hurst exponent is useful for predicting future price changes. Furthermore, we also discovered that the Hurst exponent and the hit rate are useful as standards that can distinguish emerging capital markets from mature capital markets.

  10. Drive Strength Analysis of ZC1 Circular Cylindrical Worm%ZC1圆弧圆柱蜗杆传动强度分析∗

    Institute of Scientific and Technical Information of China (English)

    靳小马; 吉卫喜

    2016-01-01

    ZC1蜗杆传动强度进行了研究,基于啮合理论、赫兹理论和ZC1圆弧圆柱蜗杆的强度解析式,并结合有限元建立了蜗杆副的接触模型,将计算得到的应力结果与解析式计算的应力进行对比。解析式算法结果略大于有限元法结果的11.5%~15.5%,验证了有限元法的正确性,可以作为ZC1蜗杆副啮合的强度计算依据。并且研究了蜗杆啮合过程中的齿间载荷分配情况,得出第一对啮合齿的承受主要的扭矩,约占总负荷的60%~72.3%。接触应力沿蜗轮齿长方向的分布形状为U形。%Strength of ZC1 worm drive is studied. Based on meshing theory, hz theory and the intensity of ZC1 circular cylindrical worm, the contact model of worm pair is established combining with the finite ele-ment. The calculated stress results compare with analytical calculation of stress. Analytical algorithm results slightly bigger than the finite element method of 11. 5% ~15. 5%. The finite element method is validated the correctness and can be used as the strength calculation basis of ZC1 worm pair meshing. Load distribution a-mong gear teeth has been studied in the process of worm gearing, it is concluded that the first pair of mes-hing teeth under the main torque, accounts for about 60% ~72. 3% of total load . The distribution of contact stress along the direction of worm gear teeth shapes for U.

  11. Search for $Z_c(3900)^\\pm\\to\\omega\\pi^\\pm$

    CERN Document Server

    Ablikim, M; Ai, X C; Albayrak, O; Albrecht, M; Ambrose, D J; Amoroso, A; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Bennett, D W; Bennett, J V; Bertani, M; Bettoni, D; Bian, J M; Bianchi, F; Boger, E; Boyko, I; Briere, R A; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, H Y; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Cibinetto, G; Dai, H L; Dai, J P; Dbeyssi, A; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, L Y; Dong, M Y; Du, S X; Duan, P F; Eren, E E; Fan, J Z; Fang, J; Fang, S S; Fang, X; Fang, Y; Fava, L; Feldbauer, F; Felici, G; Feng, C Q; Fioravanti, E; Fritsch, M; Fu, C D; Gao, Q; Gao, X Y; Gao, Y; Gao, Z; Garzia, I; Geng, C; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, Y; Guo, Y P; Haddadi, Z; Hafner, A; Han, S; Han, Y L; Hao, X Q; Harris, F A; He, K L; He, Z Y; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Hu, Y; Huang, G M; Huang, G S; Huang, H P; Huang, J S; Huang, X T; Huang, Y; Hussain, T; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, L W; Jiang, X S; Jiang, X Y; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Johansson, T; Julin, A; Kalantar-Nayestanaki, N; Kang, X L; Kang, X S; Kavatsyuk, M; Ke, B C; Kiese, P; Kliemt, R; Kloss, B; Kolcu, O B; Kopf, B; Kornicer, M; Kühn, W; Kupsc, A; Lange, J S; Lara, M; Larin, P; Leng, C; Li, C; Li, C H; Li, Cheng; Li, D M; Li, F; Li, G; Li, H B; Li, J C; Li, Jin; Li, K; Li, Lei; Li, P R; Li, T; Li, W D; Li, W G; Li, X L; Li, X M; Li, X N; Li, X Q; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Lin, D X; Liu, B J; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H B; Liu, H H; Liu, H M; Liu, J; Liu, J B; Liu, J P; Liu, J Y; Liu, K; Liu, K Y; Liu, L D; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, X X; Liu, Y B; Liu, Z A; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, H J; Lu, J G; Lu, R Q; Lu, Y; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lv, M; Lyu, X R; Ma, F C; Ma, H L; Ma, L L; Ma, Q M; Ma, T; Ma, X N; Ma, X Y; Maas, F E; Maggiora, M; Mao, Y J; Mao, Z P; Marcello, S; Messchendorp, J G; Min, J; Min, T J; Mitchell, R E; Mo, X H; Mo, Y J; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nerling, F; Nikolaev, I B; Ning, Z; Nisar, S; Niu, S L; Niu, X Y; Olsen, S L; Ouyang, Q; Pacetti, S; Patteri, P; Pelizaeus, M; Peng, H P; Peters, K; Pettersson, J; Ping, J L; Ping, R G; Poling, R; Prasad, V; Pu, Y N; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, N; Qin, X S; Qin, Y; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Ren, H L; Ripka, M; Rong, G; Rosner, Ch; Ruan, X D; Santoro, V; Sarantsev, A; Savrié, M; Schoenning, K; Schumann, S; Shan, W; Shao, M; Shen, C P; Shen, P X; Shen, X Y; Sheng, H Y; Song, W M; Song, X Y; Sosio, S; Spataro, S; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Tiemens, M; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, B L; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, S G; Wang, W; Wang, X F; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z H; Wang, Z Y; Weber, T; Wei, D H; Wei, J B; Weidenkaff, P; Wen, S P; Wiedner, U; Wolke, M; Wu, L H; Wu, Z; Xia, L G; Xia, Y; Xiao, D; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, L; Xu, Q J; Xu, Q N; Xu, X P; Yan, L; Yan, W B; Yan, W C; Yan, Y H; Yang, H J; Yang, H X; Yang, L; Yang, Y; Yang, Y X; Ye, H; Ye, M; Ye, M H; Yin, J H; Yu, B X; Yu, C X; Yu, H W; Yu, J S; Yuan, C Z; Yuan, W L; Yuan, Y; Yuncu, A; Zafar, A A; Zallo, A; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J J; Zhang, J L; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, K; Zhang, L; Zhang, S H; Zhang, X Y; Zhang, Y; Zhang, Y N; Zhang, Y H; Zhang, Y T; Zhang, Yu; Zhang, Z H; Zhang, Z P; Zhang, Z Y; Zhao, G; Zhao, J W; Zhao, J Y; Zhao, J Z; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, Q W; Zhao, S J; Zhao, T C; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, W J; Zheng, Y H; Zhong, B; Zhou, L; Zhou, Li; Zhou, X; Zhou, X K; Zhou, X R; Zhou, X Y; Zhu, K; Zhu, K J; Zhu, S; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, J; Zotti, L; Zou, B S; Zou, J H

    2015-01-01

    The decay $Z_c(3900)^\\pm\\to\\omega\\pi^\\pm$ is searched for using data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies $\\sqrt{s}=4.23$ and $4.26$~GeV. No significant signal for the $Z_c(3900)^\\pm$ is found, and upper limits at the 90\\% confidence level on the Born cross section for the process $e^+e^-\\to Z_c(3900)^\\pm\\pi^\\mp\\to\\omega\\pi^+\\pi^-$ are determined to be $0.26$ and $0.18$ pb at $\\sqrt{s}=4.23$ and 4.26 GeV, respectively.

  12. Radially excited axial mesons and the enigmatic Zc and Zb in a coupled-channel model

    Science.gov (United States)

    Coito, Susana

    2016-07-01

    The enigmatic charged states Zc(3900 ), Zc(4020 ), Zc(4050 ), Zb(10610 ), and Zb(10650 ) are studied within a coupled-channel Schrödinger model, where radially excited quark-antiquark pairs, with the same angular momenta and isospin as the a1(1260 ) and b1(1235 ), are strongly coupled to their Okubo-Zweig-Iizuka-allowed decay channels D D¯*+D ¯D* and D*D¯*, or B B¯*+B ¯B* and B*B¯*, in S and D waves. Poles, matching the experimental mass and width of the above states, are found by varying only two free parameters. From the wave-function analysis of each resonance, the probability of each of the components contributing to the coupled system is estimated, and predictions can be made for the relative decay fractions among the coupled open-charm or open-bottom decay channels.

  13. Search for Zc+(3900) in the 1 channel on the lattice

    Science.gov (United States)

    Prelovsek, Sasa; Leskovec, Luka

    2013-11-01

    Recently three experiments reported a discovery of manifestly exotic Zc+(3900) in the decay to J/ψπ+, while J and P are experimentally unknown. We search for this state on the lattice by simulating the channel with JPC=1 and I=1, and we do not find a candidate for Zc+(3900). Instead, we only find discrete scattering states DD and J/ψπ, which inevitably have to be present in a dynamical QCD. The possible reasons for not finding Zc+ may be that its quantum numbers are not 1 or that the employed interpolating fields are not diverse enough. Simulations with additional types of interpolators will be needed to reach a more definite conclusion.

  14. Seismic Activity Seen Through Evolution of the Hurst Exponent Model in 3D

    Science.gov (United States)

    Patiño Ortiz, J.; Carreño Aguilera, R.; Balankin, A. S.; Patiño Ortiz, M.; Tovar Rodriguez, J. C.; Acevedo Mosqueda, M. A.; Martinez Cruz, M. A.; Yu, Wen

    2016-10-01

    The dynamics seismic activity occurred in the Cocos Plate—Mexico is analyzed through the evolution of Hurst exponent and 3D fractal dimension, under the mathematical fractal structure based on seismic activity time series, taking into account the magnitude (M) as the main parameter to be estimated. The seismic activity time series and, annual intervals are considered first for finding the Hurst exponent of each year since 1988 (the year in which the database is consistent) until 2012, and then the following years are accumulated describing the cumulative Hurst exponent. The seismic activity description is based on Cocos Plate data information; during a period conform from 1 January 1988 to 31 December 2012. Analyses were performed following methods, mainly considering that the Hurst exponent analysis provides the ability to find the seismicity behavior time-space, described by parameters obtained under the fractal dimension and complex systems.

  15. Simulation paradoxes related to a fractional Brownian motion with small Hurst index

    OpenAIRE

    Makogin, Vitalii

    2016-01-01

    We consider the simulation of sample paths of a fractional Brownian motion with small values of the Hurst index and estimate the behavior of the expected maximum. We prove that, for each fixed $N$, the error of approximation $\\mathbf {E}\\max_{t\\in[0,1]}B^H(t)-\\mathbf {E}\\max_{i=\\overline{1,N}}B^H(i/N)$ grows rapidly to $\\infty$ as the Hurst index tends to 0.

  16. Data of evolutionary structure change: 1CTMA-1E2ZC [Confc[Archive

    Lifescience Database Archive (English)

    Full Text Available M A 1CTMA IVDASNERQVI ...1CTMA-1E2ZC 1CTM 1E2Z A C YPIFAQQNYENPREATGRIVCANCHLASKPVDIEVPQAV...EEEEEE EEEEEEE - EEEEEEE EEE EEEEEEEEEE 0 1CT...M A 1CTMA KILRK--EKGGY ure>EEEEE-- EEure>

  17. Data of evolutionary structure change: 1B1ZC-2NTSA [Confc[Archive

    Lifescience Database Archive (English)

    Full Text Available 1B1ZC-2NTSA 1B1Z 2NTS C A DPDPSQLHRSSLVKNLQNIYFLYE-GDPVTHENVKSVDQ...ELDYKVRKYLTDNKQLYTNG--------------PSKYETGYIKFIPKNKESFWFDFFP-EPEFTQSKYLMIYKDNETLDSNTSQIEVYLTT-- ...e>THR CA 392 2NTS A 2NTS...CA 343 LYS CA 296 2NTS A 2NTS...208 PHE CA 276 THR CA 304 2NTS

  18. Estimation of time-dependent Hurst exponents with variational smoothing and application to forecasting foreign exchange rates

    Science.gov (United States)

    Garcin, Matthieu

    2017-10-01

    Hurst exponents depict the long memory of a time series. For human-dependent phenomena, as in finance, this feature may vary in the time. It justifies modelling dynamics by multifractional Brownian motions, which are consistent with time-dependent Hurst exponents. We improve the existing literature on estimating time-dependent Hurst exponents by proposing a smooth estimate obtained by variational calculus. This method is very general and not restricted to the sole Hurst framework. It is globally more accurate and easier than other existing non-parametric estimation techniques. Besides, in the field of Hurst exponents, it makes it possible to make forecasts based on the estimated multifractional Brownian motion. The application to high-frequency foreign exchange markets (GBP, CHF, SEK, USD, CAD, AUD, JPY, CNY and SGD, all against EUR) shows significantly good forecasts. When the Hurst exponent is higher than 0.5, what depicts a long-memory feature, the accuracy is higher.

  19. Searching for the $X(3872)$ and $Z_c^+(3900)$ on HISQ lattices

    CERN Document Server

    Lee, Song-haeng; Mohler, Daniel; Na, Heechang

    2014-01-01

    We present preliminary simulation results for the I = 0 charmonium state $X(3872)(1^{++})$ and the I = 1 charmonium state $Z_c^+(3900)(1^{+-})$. The study is performed on gauge field configurations with 2+1+1 flavors of highly improved staggered sea quarks (HISQ) with clover (Fermilab interpretation) charm quarks and HISQ light valence quarks. Since the $X(3872)$ lies very close to the open charm $D \\bar D^*$ threshold, we use a combination of $\\bar c c$ and $D \\bar D^* + \\bar D D^*$ interpolating operators. For the $Z_c^+(3900)$ we use a combination of $J/\\psi \\pi$ and $D \\bar D^* + \\bar D D^*$ channels. This is the first such study with HISQ sea quarks and light valence quarks. To this end, we describe a variational method for treating staggered quarks that incorporates both oscillating and non-oscillating components.

  20. Realization of Resistorless Lossless Positive and Negative Grounded Inductor Simulators Using Single ZC-CCCITA

    Directory of Open Access Journals (Sweden)

    N. Herencsar

    2012-04-01

    Full Text Available This paper is in continuation with the very recent work of Prasad et al. [14], wherein new realizations of grounded and floating positive inductor simulator using current differencing transconductance amplifier (CDTA are reported. The focus of the paper is to provide alternate realizations of lossless, both positive and negative inductor simulators (PIS and NIS in grounded form using z-copy current-controlled current inverting transconductance amplifier (ZC-CCCITA, which can be considered as a derivative of CDTA, wherein the current differencing unit (CDU is reduced to a current-controlled current inverting unit. We demonstrate that only a single ZC-CCCITA and one grounded capacitor are sufficient to realize grounded lossless PIS or NIS. The proposed circuits are resistorless whose parameters can be controlled through the bias currents. The workability of the proposed PIS is validated by SPICE simulations on three RLC prototypes.

  1. Analysis of the Z(4430) as the First Radial Excitation of the Zc(3900)

    Science.gov (United States)

    Wang, Zhi-Gang

    2015-03-01

    In this article, we take the Zc(3900) and Z(4430) as the ground state and the first radial excited state of the axial-vector tetraquark states with JPC = 1+-, respectively, and study their masses and pole residues with the QCD sum rules by calculating the contributions of the vacuum condensates up to dimension-10 in a consistent way in the operator product expansion. The numerical result favors assigning the Zc(3900) and Z(4430) as the ground state and first radial excited state of the axial-vector tetraquark states, respectively. Supported by National Natural Science Foundation under Grant No. 11375063, and Natural Science Foundation of Hebei Province under Grant No. A2014502017

  2. Searching for the $X(3872)$ and $Z_c^+(3900)$ on HISQ Lattices

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Song-haeng [Utah U.; DeTar, Carleton [Utah U.; Na, Heechang [Utah U.; Mohler, Daniel [Fermilab

    2014-11-05

    We present preliminary simulation results for the I = 0 charmonium state $X(3872)(1^{++})$ and the I = 1 charmonium state $Z_c^+(3900)(1^{+-})$. The study is performed on gauge field configurations with 2+1+1 flavors of highly improved staggered sea quarks (HISQ) with clover (Fermilab interpretation) charm quarks and HISQ light valence quarks. Since the $X(3872)$ lies very close to the open charm $D \\bar D^*$ threshold, we use a combination of $\\bar c c$ and $D \\bar D^* + \\bar D D^*$ interpolating operators. For the $Z_c^+(3900)$ we use a combination of $J/\\psi \\pi$ and $D \\bar D^* + \\bar D D^*$ channels. This is the first such study with HISQ sea quarks and light valence quarks. To this end, we describe a variational method for treating staggered quarks that incorporates both oscillating and non-oscillating components.

  3. Stability analysis of titanium alloy milling by multiscale entropy and Hurst exponent

    Science.gov (United States)

    Rusinek, Rafał; Borowiec, Marek

    2015-10-01

    This paper discusses the problem of stability in a milling process for titanium super-alloy Ti6242. The phenomenon of chatter vibration is analysed by the multiscale entropy method and Hurst exponent. Although this problem is often considered based on stability lobe diagrams, theoretical findings do not always agree with experimental results. First, a stability lobe diagram is created based on parameters determined by impact testing. Next, cutting forces are measured in an experiment where the axial cutting depth is gradually increased. Finally, the obtained experimental signals are investigated with respect to stability using the multiscale entropy method and Hurst exponent.

  4. Can one make any crash prediction in finance using the local Hurst exponent idea?

    Science.gov (United States)

    Grech, D.; Mazur, Z.

    2004-05-01

    We apply the Hurst exponent idea for investigation of DJIA index time-series data. The behavior of the local Hurst exponent prior to drastic changes in financial series signal is analyzed. The optimal length of the time-window over which this exponent can be calculated in order to make some meaningful predictions is discussed. Our prediction hypothesis is verified with examples of 1929 and 1987 crashes, as well as with more recent phenomena in stock market from the period 1995 to 2003. Some interesting agreements are found.

  5. Four-quark structure of Zc(3900), Z(4430) and Xb(5568) states

    CERN Document Server

    Goerke, Fabian; Ivanov, Mikhail A; Korner, Jurgen G; Lyubovitskij, Valery E; Santorelli, Pietro

    2016-01-01

    We examine the four-quark structure of the recently discovered charged $Z_c(3900)$, $Z(4430)$ and $X_b(5568)$ states. We calculate the widths of the strong decays $Z_c^+ \\to J/\\psi \\pi^+$ ($\\eta_c\\rho^+$, $\\bar D^0D^{\\ast\\,+}$, $\\bar D^{\\ast\\,0}D^+$), $Z(4430)^+ \\to J/\\psi \\pi^+$ ($\\psi(2s) \\pi^+$), and $X^+_b\\to B_s\\pi^+$ within a covariant quark model previously developed by us. We find that the tetraquark-type current widely used in the literature for the $Z_c(3900)$ leads to a significant suppression of the $\\bar D D^\\ast$ and $\\bar D^\\ast D$ modes. Contrary to this a molecular-type current provides an enhancement by a factor of 6-7 for the $\\bar D D^\\ast$ modes compared with the $Z_c^+\\to J/\\psi\\pi^+$, $\\eta_c\\rho^+$ modes in agreement with recent experimental data from the BESIII Collaboration. In case of $Z(4430)$ state we test a sensitivity of the ratio $R_Z$ of the $Z(4430)^+ \\to \\psi(2s) \\pi^+$ and $Z(4430)^+ \\to J/\\psi \\pi^+$ decay rates to a choice of the size parameter $\\Lambda_{Z(4430)}$ of the ...

  6. Z_c(3900) as a D\\bar{D}^* Molecule from Pole Counting Rule

    CERN Document Server

    Gong, Qin-Rong; Meng, Ce; Tang, Guang-Yi; Zheng, Han-Qing

    2016-01-01

    A careful study on the nature of the Z_c(3900) resonant structure is carried out in this work. By constructing the pertinent effective Lagrangians and considering the important final-state-interaction effects, we first give a unified description to all the relevant experimental data available, including the J/\\psi\\pi and \\pi\\pi invariant mass distributions from the e^+e^-\\to J/\\psi\\pi\\pi process, the h_c\\pi distribution from e^+e^-\\to h_c\\pi\\pi and also the D\\bar{D}^{*} spectrum in the e^+e^-\\to D\\bar{D}^{*}\\pi process. After fitting the unknown parameters to the previous data, we search the pole in the complex energy plane and only find one pole in the nearby energy region in different Riemann sheets. Therefore we conclude that Z_c(3900) is of D\\bar{D}^* molecular nature, according to the pole counting rule method. We emphasize that the conclusion based upon pole counting method is not trivial, since both the D\\bar{D}^{*} contact interactions and the explicit Z_c exchanges are introduced in our analyses and ...

  7. Dynamical generalized Hurst exponent as a tool to monitor unstable periods in financial time series

    Science.gov (United States)

    Morales, Raffaello; Di Matteo, T.; Gramatica, Ruggero; Aste, Tomaso

    2012-06-01

    We investigate the use of the Hurst exponent, dynamically computed over a weighted moving time-window, to evaluate the level of stability/instability of financial firms. Financial firms bailed-out as a consequence of the 2007-2008 credit crisis show a neat increase with time of the generalized Hurst exponent in the period preceding the unfolding of the crisis. Conversely, firms belonging to other market sectors, which suffered the least throughout the crisis, show opposite behaviors. We find that the multifractality of the bailed-out firms increase at the crisis suggesting that the multi fractal properties of the time series are changing. These findings suggest the possibility of using the scaling behavior as a tool to track the level of stability of a firm. In this paper, we introduce a method to compute the generalized Hurst exponent which assigns larger weights to more recent events with respect to older ones. In this way large fluctuations in the remote past are less likely to influence the recent past. We also investigate the scaling associated with the tails of the log-returns distributions and compare this scaling with the scaling associated with the Hurst exponent, observing that the processes underlying the price dynamics of these firms are truly multi-scaling.

  8. David Hurst Thomas and the Historical Archaeology of the Spanish Borderlands.

    Science.gov (United States)

    Snead, James E.

    2000-01-01

    Discusses David Hurst Thomas' archaeological work on the Spanish borderlands, which integrates field archaeology and documentary history. Focuses on locating and studying the Santa Catalina de Guale. Addresses his project on the Pueblo San Marcos that will further test his ideas about the Spanish mission period. (CMK)

  9. An analysis of the financial crisis in the KOSPI market using Hurst exponents

    Science.gov (United States)

    Yim, Kyubin; Oh, Gabjin; Kim, Seunghwan

    2014-09-01

    Recently, the study of the financial crisis has progressed to include the concept of the complex system, thereby improving the understanding of this extreme event from a neoclassical economic perspective. To determine which variables are related to the financial event caused by the 2008 US subprime crisis using temporal correlations, we investigate the diverse variables that may explain the financial system. These variables include return, volatility, trading volume and inter-trade duration data sets within the TAQ data for 27 highly capitalized individual companies listed on the KOSPI stock market. During 2008 and 2009, the Hurst exponent for the return time series over the whole period was less than 0.5, and the Hurst exponents for other variables, such as the volatility, trading volume and inter-trade duration, were greater than 0.5. Additionally, we analyze the relationships between the variation of temporal correlation and market instability based on these Hurst exponents and the degree of multifractality. We find that for the data related to trading volume, the Hurst exponents do not allow us to detect changes in market status, such as changes from normal to abnormal status, whereas other variables, including the return, volatility and weekly inter-trade duration, indicate a significant change in market status after the Lehman Brothers' bankruptcy. In addition, the multifractality and the measurement defined by subtracting the Hurst exponent of the return time series from that of the volatility time series decrease sharply after the US subprime event and recover approximately 50 days after the Lehman Brothers' collapse. Our findings suggest that the temporal features of financial quantities in the TAQ data set and the market complexity perform very well at diagnosing financial market stability.

  10. Fractional Black–Scholes option pricing, volatility calibration and implied Hurst exponents in South African context

    Directory of Open Access Journals (Sweden)

    Emlyn Flint

    2017-03-01

    Full Text Available Background: Contingent claims on underlying assets are typically priced under a framework that assumes, inter alia, that the log returns of the underlying asset are normally distributed. However, many researchers have shown that this assumption is violated in practice. Such violations include the statistical properties of heavy tails, volatility clustering, leptokurtosis and long memory. This paper considers the pricing of contingent claims when the underlying is assumed to display long memory, an issue that has heretofore not received much attention. Aim: We address several theoretical and practical issues in option pricing and implied volatility calibration in a fractional Black–Scholes market. We introduce a novel eight-parameter fractional Black–Scholes-inspired (FBSI model for the implied volatility surface, and consider in depth the issue of calibration. One of the main benefits of such a model is that it allows one to decompose implied volatility into an independent long-memory component – captured by an implied Hurst exponent – and a conditional implied volatility component. Such a decomposition has useful applications in the areas of derivatives trading, risk management, delta hedging and dynamic asset allocation. Setting: The proposed FBSI volatility model is calibrated to South African equity index options data as well as South African Rand/American Dollar currency options data. However, given the focus on the theoretical development of the model, the results in this paper are applicable across all financial markets. Methods: The FBSI model essentially combines a deterministic function form of the 1-year implied volatility skew with a separate deterministic function for the implied Hurst exponent, thus allowing one to model both observed implied volatility surfaces as well as decompose them into independent volatility and long-memory components respectively. Calibration of the model makes use of a quasi-explicit weighted

  11. Search for exclusive photoproduction of $Z_c(3900)$ at COMPASS

    CERN Document Server

    Guskov, Alexey

    2015-01-01

    The $Z_{c}(3900)$ hadron state has been found by the BES-III and Belle experiments in the decay of the hadron state with higher mass. The first attempt to search for the direct exclusive production of the $Z_c^{\\pm}(3900)$ hadron by virtual photons has been performed in the reaction $\\mu^+ N \\rightarrow \\mu^+ N' Z_c(3900)^{\\pm} \\rightarrow \\mu^+ N' J/\\psi \\pi^{\\pm}$ at COMPASS \\cite{Adolph:2014hba}. The data cover the range from 7~GeV to 19~GeV in the centre-of-mass energy of the photon-nucleon system. The full COMPASS data set collected with a muon beam between 2002 and 2011 has been used. An upper limit for the ratio $BR(Z_c^{\\pm}(3900)\\rightarrow J/\\psi \\pi^{\\pm} )\\times (\\sigma_{ \\gamma~N \\rightarrow Z_c^{\\pm}(3900)~ N} /\\sigma_{ \\gamma~N \\rightarrow J/\\psi~ N})$ of $3.7\\times10^{-3}$ has been established at the confidence level of 90\\%.

  12. Zc(3900 ) as a resonance from the D DxAF* interaction

    Science.gov (United States)

    He, Jun

    2015-08-01

    In this paper it is proposed that the charged charmonium-like state Zc(3900 ) is a resonance above the threshold from the D D¯* interaction. The D D¯* interaction is described by the one-boson exchange model with light meson exchanges plus a short-range J /ψ exchange. The scattering amplitude is calculated within a Bethe-Salpeter equation approach, and the poles near the D D¯* threshold are searched. In the isoscalar sector, two poles found under the D D¯* threshold—i.e., bound states—have the quantum numbers IG(JPC)=0-(1+-) and 0+(1++). The latter can be related to the X (3872 ). In the isovector sector, a bound state with IG(JP)=1+(1+) is found with a large cutoff at about 3 GeV. If a cutoff at about 2 GeV is adopted with which a pole carrying the quantum number of the X (3872 ) is produced at an energy of about 3871 MeV, the pole for the bound state with 1+(1+) runs across the threshold to a second Riemann sheet and becomes a resonance above the D D¯* threshold, which can be identified with the Zc(3900 ). With such a cutoff, the D D¯* invariant mass spectrum is also investigated and the experimental results found by BESIII can be reproduced.

  13. ZC4H2, an XLID gene, is required for the generation of a specific subset of CNS interneurons.

    Science.gov (United States)

    May, Melanie; Hwang, Kyu-Seok; Miles, Judith; Williams, Charlie; Niranjan, Tejasvi; Kahler, Stephen G; Chiurazzi, Pietro; Steindl, Katharina; Van Der Spek, Peter J; Swagemakers, Sigrid; Mueller, Jennifer; Stefl, Shannon; Alexov, Emil; Ryu, Jeong-Im; Choi, Jung-Hwa; Kim, Hyun-Taek; Tarpey, Patrick; Neri, Giovanni; Holloway, Lynda; Skinner, Cindy; Stevenson, Roger E; Dorsky, Richard I; Wang, Tao; Schwartz, Charles E; Kim, Cheol-Hee

    2015-09-01

    Miles-Carpenter syndrome (MCS) was described in 1991 as an XLID syndrome with fingertip arches and contractures and mapped to proximal Xq. Patients had microcephaly, short stature, mild spasticity, thoracic scoliosis, hyperextendable MCP joints, rocker-bottom feet, hyperextended elbows and knees. A mutation, p.L66H, in ZC4H2, was identified in a XLID re-sequencing project. Additional screening of linked families and next generation sequencing of XLID families identified three ZC4H2 mutations: p.R18K, p.R213W and p.V75in15aa. The families shared some relevant clinical features. In silico modeling of the mutant proteins indicated all alterations would destabilize the protein. Knockout mutations in zc4h2 were created in zebrafish and homozygous mutant larvae exhibited abnormal swimming, increased twitching, defective eye movement and pectoral fin contractures. Because several of the behavioral defects were consistent with hyperactivity, we examined the underlying neuronal defects and found that sensory neurons and motoneurons appeared normal. However, we observed a striking reduction in GABAergic interneurons. Analysis of cell-type-specific markers showed a specific loss of V2 interneurons in the brain and spinal cord, likely arising from mis-specification of neural progenitors. Injected human wt ZC4H2 rescued the mutant phenotype. Mutant zebrafish injected with human p.L66H or p.R213W mRNA failed to be rescued, while the p.R18K mRNA was able to rescue the interneuron defect. Our findings clearly support ZC4H2 as a novel XLID gene with a required function in interneuron development. Loss of function of ZC4H2 thus likely results in altered connectivity of many brain and spinal circuits.

  14. Modified periodogram method for estimating the Hurst exponent of fractional Gaussian noise.

    Science.gov (United States)

    Liu, Yingjun; Liu, Yong; Wang, Kun; Jiang, Tianzi; Yang, Lihua

    2009-12-01

    Fractional Gaussian noise (fGn) is an important and widely used self-similar process, which is mainly parametrized by its Hurst exponent (H) . Many researchers have proposed methods for estimating the Hurst exponent of fGn. In this paper we put forward a modified periodogram method for estimating the Hurst exponent based on a refined approximation of the spectral density function. Generalizing the spectral exponent from a linear function to a piecewise polynomial, we obtained a closer approximation of the fGn's spectral density function. This procedure is significant because it reduced the bias in the estimation of H . Furthermore, the averaging technique that we used markedly reduced the variance of estimates. We also considered the asymptotical unbiasedness of the method and derived the upper bound of its variance and confidence interval. Monte Carlo simulations showed that the proposed estimator was superior to a wavelet maximum likelihood estimator in terms of mean-squared error and was comparable to Whittle's estimator. In addition, a real data set of Nile river minima was employed to evaluate the efficiency of our proposed method. These tests confirmed that our proposed method was computationally simpler and faster than Whittle's estimator.

  15. Modified periodogram method for estimating the Hurst exponent of fractional Gaussian noise

    Science.gov (United States)

    Liu, Yingjun; Liu, Yong; Wang, Kun; Jiang, Tianzi; Yang, Lihua

    2009-12-01

    Fractional Gaussian noise (fGn) is an important and widely used self-similar process, which is mainly parametrized by its Hurst exponent (H) . Many researchers have proposed methods for estimating the Hurst exponent of fGn. In this paper we put forward a modified periodogram method for estimating the Hurst exponent based on a refined approximation of the spectral density function. Generalizing the spectral exponent from a linear function to a piecewise polynomial, we obtained a closer approximation of the fGn’s spectral density function. This procedure is significant because it reduced the bias in the estimation of H . Furthermore, the averaging technique that we used markedly reduced the variance of estimates. We also considered the asymptotical unbiasedness of the method and derived the upper bound of its variance and confidence interval. Monte Carlo simulations showed that the proposed estimator was superior to a wavelet maximum likelihood estimator in terms of mean-squared error and was comparable to Whittle’s estimator. In addition, a real data set of Nile river minima was employed to evaluate the efficiency of our proposed method. These tests confirmed that our proposed method was computationally simpler and faster than Whittle’s estimator.

  16. An accurate algorithm to calculate the Hurst exponent of self-similar processes

    Energy Technology Data Exchange (ETDEWEB)

    Fernández-Martínez, M., E-mail: fmm124@ual.es [Department of Mathematics, Faculty of Science, Universidad de Almería, 04120 Almería (Spain); Sánchez-Granero, M.A., E-mail: misanche@ual.es [Department of Mathematics, Faculty of Science, Universidad de Almería, 04120 Almería (Spain); Trinidad Segovia, J.E., E-mail: jetrini@ual.es [Department of Accounting and Finance, Faculty of Economics and Business, Universidad de Almería, 04120 Almería (Spain); Román-Sánchez, I.M., E-mail: iroman@ual.es [Department of Accounting and Finance, Faculty of Economics and Business, Universidad de Almería, 04120 Almería (Spain)

    2014-06-27

    In this paper, we introduce a new approach which generalizes the GM2 algorithm (introduced in Sánchez-Granero et al. (2008) [52]) as well as fractal dimension algorithms (FD1, FD2 and FD3) (first appeared in Sánchez-Granero et al. (2012) [51]), providing an accurate algorithm to calculate the Hurst exponent of self-similar processes. We prove that this algorithm performs properly in the case of short time series when fractional Brownian motions and Lévy stable motions are considered. We conclude the paper with a dynamic study of the Hurst exponent evolution in the S and P500 index stocks. - Highlights: • We provide a new approach to properly calculate the Hurst exponent. • This generalizes FD algorithms and GM2, introduced previously by the authors. • This method (FD4) results especially appropriate for short time series. • FD4 may be used in both unifractal and multifractal contexts. • As an empirical application, we show that S and P500 stocks improved their efficiency.

  17. Experimental determination of Hurst exponent of the self-affine fractal patterns with optical fractional Fourier transform

    Institute of Scientific and Technical Information of China (English)

    FENG; Shaotong; HAN; Dianrong; DING; Heping

    2004-01-01

    By means of experimental technique of optical fractional Fourier transform,we have determined the Hurst exponent of a regular self-affine fractal pattern to demonstrate the feasibility of this approach. Then we extend this method to determine the Hurst exponents of some irregular self-affine fractal patterns. Experimental results show that optical fractional Fourier transform is a practical method for analyzing the self-affine fractal patterns.

  18. Hurst's Exponent Determination for Radial Distribution Functions of In, Sn and In-40 wt%Sn Melt

    Institute of Scientific and Technical Information of China (English)

    周永志; 李梅; 耿浩然; 杨中喜; 孙春静

    2011-01-01

    Hurst's exponent of radial distribution functions (RDFs) within the short-range scope of In, Sn and In-40wt%Sn melts are determined by the rescaled range analysis method. Hurst's exponents H are between 0.94 and 0.97, which display long-range dependence. Within short-range scope, the number of particles from a reference particle belongs to fractional Brownian motion. After RDF serials are randomly scrambled, Hurst's exponents all dramatically dropped, which proves long-range dependence. H irregularly varies as the temperature rises, but the change tendency is not consistent with the correlation radius rc.%Hurst's exponent of radial distribution functions(RDFs)within the short-range scope of In,Sn and In-40 wt%Sn melts are determined by the rescaled range analysis method.Hurst's exponents H are between 0.94 and 0.97,which display long-range dependence.Within short-range scope,the number of particles from a reference particle belongs to fractional Brownian motion.After RDF serials are randomly scrambled,Hurst's exponents all dramatically dropped,which proves long-range dependence.H irregularly varies as the temperature rises,but the change tendency is not consistent with the correlation radius rc.

  19. Multi-Body Dynamics Analysis and Low Noise Optimization of X6170ZC Diesel

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The multi-body dynamics model of the X6170ZC diesel is established to analyze vibration and acoustic noise. The high quality finite element and simulation models are developed, and nonlinear springs are used to imitate the joints of engine components. The acoustic behavior of the structure is evaluated by the velocity of surface vibration. The noise level is reduced by improving the structure of the engine. The result shows that the surface vibration velocity level is decreased about 3.7 dB (A) at 1 600 Hz after the optimization. Based on the contrast between the two structures, it is concluded that through structure design the combined noise can be reduced, and the virtual design mode of diesel engines is feasible.

  20. Low-energy $DD^{*+}$ Scattering and the Resonance-like Structure $Z_c(3900)$

    CERN Document Server

    Chen, Ying; Lei, Yu-Hong; Li, Ning; Liang, Jian; Liu, Chuan; Liu, Hang; Liu, Jin-Long; Liu, Liuming; Liu, Yong-Fu; Liu, Yu-Bin; Liu, Zhaofeng; Ma, Jian-Ping; Wang, Zhan-Lin; Yang, Yi-Bo; Zhang, Jian-Bo

    2014-01-01

    In this exploratory lattice study, low-energy scattering of $D$ and $D^*$ meson are analyzed using lattice QCD with $N_f=2$ twisted mass fermion configurations with three pion mass values. The calculation is performed within single-channel L\\"uscher's finite-size formalism. The threshold scattering parameters, namely the scattering length $a_0$ and the effective range $r_0$, for the $s$-wave scattering in $J^P=1^+$ channel are extracted. For the cases in our study, the interaction between the two charmed mesons is weakly repulsive. Our lattice results therefore do not support the possibility of a shallow bound state for the two charmed mesons for the pion mass values we studied. This calculation provides some useful information on the nature of the newly discovered resonance-like structure $Z_c(3900)$ by various experimental groups.

  1. Some comments on Hurst exponent and the long memory processes on capital markets

    Science.gov (United States)

    Sánchez Granero, M. A.; Trinidad Segovia, J. E.; García Pérez, J.

    2008-09-01

    The analysis of long memory processes in capital markets has been one of the topics in finance, since the existence of the market memory could implicate the rejection of an efficient market hypothesis. The study of these processes in finance is realized through Hurst exponent and the most classical method applied is R/S analysis. In this paper we will discuss the efficiency of this methodology as well as some of its more important modifications to detect the long memory. We also propose the application of a classical geometrical method with short modifications and we compare both approaches.

  2. 布氏锥虫未知CCCH-型锌指蛋白TbZC3H8功能特性的初步分析%Characterization of the hypothetical CCCH-type zinc-finger protein TbZC3H8 in Trypanosoma brucei

    Institute of Scientific and Technical Information of China (English)

    雷霁卿; 刘罗根; 郭学敏

    2013-01-01

    Objective To characterize the properties and functions of putative zinc-finger protein TbZC3H8 in Trypanosoma brucei.Methods Sequence analysis and motifs/domains prediction were performed through the protein database searches.An inducible RNAi cell line was generated to study the effect of TbZC3H8 repression on cell viability,and the RNAi knockdown efficiency was estimated by RT-QPCR and Western blot.The cell line ectopically expressing C-terminal mycTAP tagged TbZC3H8 was generated and used to identify the composition of TbZC3H8 protein complexes through the combination of tandem affinity purification and mass spectrometric analysis.Subcellular localization of the TbZC3H8 protein was determined by immunofluorescence microscopy.Results The CCCH zinc-finger motif of TbZC3H8 is highly conserved in kinetoplastid parasites.Repression of TbZC3H8 by RNAi resulted in the growth inhibition.The TbZC3H8 protein complex was found to contain both unknown proteins and RNA-binding proteins.TbZC3H8 was found to localize in the cytoplasm and the expression level was not changed upon the heat shock and serum starvation.Conclusion TbZC3H8 is essential for the growth of T.brucei.The binding of ZC3H8 with RNA-binding proteins suggested that ZC3H8 might play a role in RNA processing and metabolism.%目的 通过RNAi和蛋白复合物鉴定来初步分析布氏锥虫未知锌指蛋白TbZC3H8的特性及功能.方法 运用蛋白数据库和分析软件对TbZC3H8进行序列分析和结构域预测;构建RNAi诱导表达细胞株分析TbZC3H8经RNAi敲低后对锥虫生长的影响,并通过RT-QPCR和Western blot检测RNAi干扰效率;构建异位融合表达myc-TAP标签的TbZC3H8细胞株,采用串联亲和纯化合并质谱鉴定其蛋白复合物组成;采用免疫荧光分析蛋白定位.结果 TbZC3H8的CCCH结构域在动基体原虫中高度保守;RNAi下调TbZC3H8后明显抑制了锥虫复制;TbZC3H8蛋白复合物中包含多种未知蛋白和两种RNA结合蛋白;TbZC

  3. Algorithm and code for analyzing hyperspectral images using the Hurst exponent

    Directory of Open Access Journals (Sweden)

    Nicolae APOSTOLESCU

    2014-09-01

    Full Text Available The main goal of this paper is to present the implementation of an algorithm developed to calculate the Hurst exponent (H, applied here to characterize the pixel spectrum from hyperspectral image. Because a hyperspectral reflectance curve from each pixel may be regarded as a chaotic series that fact inspires us to treat a spectrum as a time series. Hyperspectral data are typical heteroscedastic variables, which makes it inappropriate to apply the normal/classic time series analysis, such as the autoregressive-integrated-moving-average model. Generally, the Hurst exponent is a measure used in nonlinear time series analysis to reveal local trend of series among adjacent successive terms. H can describe the local change in the ratio between the ranges of accumulated mean-removed values to the original standard deviation and thus represents the diversity of spectral values. Although H may be used to characterize regions of the image regarding persistence or antipersistence spectrum (highlighting noisy data, it does not directly address the separation between the classes of interest. The algorithm uses the rescaled range analysis method. This method introduces a measure of the variability of a time series using a ratio range/standard deviation (R/S. The algorithm was tested on hyperspectral data with spectra of various lengths and with persistence or antipersistence spectrum.

  4. Identifying major depressive disorder using Hurst exponent of resting-state brain networks.

    Science.gov (United States)

    Wei, Maobin; Qin, Jiaolong; Yan, Rui; Li, Haoran; Yao, Zhijian; Lu, Qing

    2013-12-30

    Resting-state functional magnetic resonance imaging (fMRI) studies of major depressive disorder (MDD) have revealed abnormalities of functional connectivity within or among the resting-state networks. They provide valuable insight into the pathological mechanisms of depression. However, few reports were involved in the "long-term memory" of fMRI signals. This study was to investigate the "long-term memory" of resting-state networks by calculating their Hurst exponents for identifying depressed patients from healthy controls. Resting-state networks were extracted from fMRI data of 20 MDD and 20 matched healthy control subjects. The Hurst exponent of each network was estimated by Range Scale analysis for further discriminant analysis. 95% of depressed patients and 85% of healthy controls were correctly classified by Support Vector Machine with an accuracy of 90%. The right fronto-parietal and default mode network constructed a deficit network (lower memory and more irregularity in MDD), while the left fronto-parietal, ventromedial prefrontal and salience network belonged to an excess network (longer memory in MDD), suggesting these dysfunctional networks may be related to a portion of the complex of emotional and cognitive disturbances. The abnormal "long-term memory" of resting-state networks associated with depression may provide a new possibility towards the exploration of the pathophysiological mechanisms of MDD.

  5. Liver fibrosis and tissue architectural change measurement using fractal-rectified metrics and Hurst's exponent

    Institute of Scientific and Technical Information of China (English)

    Nicola Dioguardi; Fabio Grizzi; Barbara Franceschini; Paola Bossi; Carlo Russo

    2006-01-01

    AIM: To provide the accurate alternative metrical means of monitoring the effects of new antiviral drugs on the reversal of newly formed collagen.METHODS: Digitized histological biopsy sections taken from 209 patients with chronic C virus hepatitis with different grade of fibrosis or cirrhosis, were measured by means of a new, rapid, user-friendly, fully computeraided method based on the international system meter rectified using fractal principles.RESULTS: The following were described: geometric perimeter, area and wrinkledness of fibrosis; the collation of the Knodell, Sheuer, Ishak and METAVIR scores with fractal-rectified metric measurements; the meaning of the physical composition of fibrosis in relation to the magnitude of collagen islets; the intra- and inter-biopsy sample variability of these parameters; the "staging"of biopsy sections indicating the pathway covered by fibrosis formation towards its maximum known value;the quantitative liver tissue architectural changes with the Hurst exponent.CONCLUSION: Our model provides the first metrical evaluations of the geometric properties of fibrosis and the quantitative architectural changes of the liver tissue.The representativeness of histological sections of the whole liver is also discussed in the light of the results obtained with the Hurst coefficient.

  6. Interaction profiling of human RNP complexes identifies ZC3H18 at the interface of RNA production and destruction decisions

    DEFF Research Database (Denmark)

    Winczura, Kinga

    ’–capping, splicing and 3’end formation. When processing is not efficient, various quality control mechanisms will direct the RNA molecule for degradation to prevent accumulation of error- bearing transcripts. RNA metabolism is therefore a complex process that relies upon the spatially and temporally....... Furthermore, functional analysis suggested that ZC3H18 is involved in transcriptional regulation of mRNAs, most likely, through interaction with the Cap-binding complex. Taken together, these data suggest new links of proteins involved in RNA processing and shed further light on the mechanisms by which ZC3H18......A thorough understanding of RNA metabolism is essential for determining how gene expression is regulated at the molecular level. All RNAs are subjected to various maturation events in order to become functional molecules. Maturation of eukaryotic RNAs transcribed by RNA polymerase II includes 5...

  7. A Limit on the Branching Ratio of the Flavor-Changing Top Quark Decay T→Zc

    Energy Technology Data Exchange (ETDEWEB)

    Paramonov, Alexander Andreevich [Univ. of Chicago, IL (United States)

    2009-06-01

    We have used the Collider Detector at Fermilab (CDF-II) to set upper limits on the branching ratio of the flavor-changing neutral-current (FCNC) top quark decay t → Zc using a technique employing ratios of W and Z production, measured in 1.52 fb-1 of p$\\bar{p}$ data. The analysis uses a comparison of two decay chains, p$\\bar{p}$ → t$\\bar{t}$ → WbWb → ℓvbjjb and p$\\bar{p}$ → t$\\bar{t}$ ZcWb → ℓ+- cjjb, to cancel systematic uncertainties in acceptance, efficiency, and luminosity. We validate the MC modeling of acceptance and efficiency for lepton identification over the multi-year dataset also using a ratio of W and Z production, in this case the observed ratio of inclusive production of W to Z-bosons, a technique that will be essential for precision comparisons with the standard model at the LHC. We introduce several methods of determining backgrounds to the W and Z samples. To improve the discrimination against SM backgrounds to top quark decays, we calculate the top mass for each event with two leptons and four jets assuming it is a t$\\bar{t}$ event with one of the top quarks decaying to Zc. The upper limit on the Br(t → Zc) is estimated from a likelihood constructed with the {ell}+- cjjb top mass distribution and the number of ℓvbjjb events. Limits are set as a function of the helicity of the Z-boson produced in the FCNC decay. For 100%-longitudinally-polarized Z-bosons we find a limit of 8.3% (95% C.L.).

  8. Observation of Z(c)(0) in e(+)e(-) -> pi(0)pi(0) J/Psi

    NARCIS (Netherlands)

    Ablikim, M.; Achasov, M. N.; Ai, X.C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Haddadi, Z.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Loehner, H.; Messchendorp, J.G.; Tiemens, M.

    2015-01-01

    Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observe a new neutral state Z(c)(3900)(0) with a significance of 10.4 sigma. The mass and width are measured to be 3894.8 +/- 2.3 +/- 3.2 MeV/c(2) and 29.6 +/- 8.2 +/- 8.2 MeV, respectively, where the

  9. Improved QCD sum rule study of $Z_{c}(3900)$ as a $\\bar{D}D^{*}$ molecular state

    CERN Document Server

    Zhang, Jian-Rong

    2013-01-01

    In the framework of QCD sum rules, we present an improved study of our previous work [Phys. Rev. D {\\bf80}, 056004 (2009)] particularly on the $\\bar{D}D^{*}$ molecular state to investigate that the possibility of the newly observed $Z_{c}(3900)$ as a $S$-wave $\\bar{D}D^{*}$ molecular state. To ensure the quality of QCD sum rule analysis, contributions of up to dimension nine are calculated to test the convergence of operator product expansion (OPE). We find that the two-quark condensate $$ is very large and makes the standard OPE convergence (i.e. the perturbative at least larger than each condensate contribution) happen at very large values of Borel parameters. By releasing the rigid OPE convergence criterion, one could find that the OPE convergence is still under control. We arrive at the numerical result $3.86\\pm0.27 {GeV}$ for $\\bar{D}D^{*}$, which agrees with the mass of $Z_{c}(3900)$ and could support the explanation of $Z_{c}(3900)$ in terms of a $S$-wave $\\bar{D}D^{*}$ molecular state.

  10. Radially excited axial mesons and the enigmatic $Z_c$ and $Z_b$ in a coupled-channel model

    CERN Document Server

    Coito, Susana

    2016-01-01

    The enigmatic charged states $Z_c(3900)$, $Z_c(4020)$, $Z_c(4050)$, $Z_b(10610)$, and $Z_b(10650)$ are studied within a coupled-channel Schr\\"odinger model, where radially excited quark-antiquark pairs, with the same angular momenta and isospin as the $a_1(1260)$ and $b_1(1235)$, are strongly coupled to their Okubo-Zweig-Iizuka - allowed decay channels $D\\bar{D}^*+\\bar{D}D^*$ and $D^*\\bar{D}^*$, or $B\\bar{B}^*+\\bar{B}B^*$ and $B^*\\bar{B}^*$, in $S$ and $D$-wave. Poles, matching the experimental mass and width of all the above states, are found by varying only two free parameters. From the wave-function analysis of each resonance, the probability of each of the components contributing to the coupled system is estimated, and predictions can be made for the relative decay fractions among the coupled open-charm or open-bottom decay channels.

  11. Fractality Evidence and Long-Range Dependence on Capital Markets: a Hurst Exponent Evaluation

    Science.gov (United States)

    Oprean, Camelia; Tănăsescu, Cristina

    2014-07-01

    Since the existence of market memory could implicate the rejection of the efficient market hypothesis, the aim of this paper is to find any evidence that selected emergent capital markets (eight European and BRIC markets, namely Hungary, Romania, Estonia, Czech Republic, Brazil, Russia, India and China) evince long-range dependence or the random walk hypothesis. In this paper, the Hurst exponent as calculated by R/S fractal analysis and Detrended Fluctuation Analysis is our measure of long-range dependence in the series. The results reinforce our previous findings and suggest that if stock returns present long-range dependence, the random walk hypothesis is not valid anymore and neither is the market efficiency hypothesis.

  12. Decrease in Hurst exponent of human gait with aging and neurodegenerative diseases

    Institute of Scientific and Technical Information of China (English)

    Zhuang Jian-Jun; Ning Xin-Bao; Yang Xiao-Dong; Hou Feng-Zhen; Huo Cheng-Yu

    2008-01-01

    In this paper the decrease in the Hurst exponent of human gait with aging and neurodegenerative diseases was observed by using an improved rescaled range (R/S) analysis method. It indicates that the long-range correlations of gait rhythm from young healthy people are stronger than those from the healthy elderly and the diseased.The result further implies that fractal dynamics in human gait will be altered due to weakening or impairment of neural control on locomotion resulting from aging and neurodegenerative diseases. Due to analysing short-term data sequences rather than long datasets required by most nonlinear methods, the algorithm has the characteristics of simplicity and sensitivity, most importantly, fast calculation as well as powerful anti-noise capacities. These findings have implications for modelling locomotor control and also for quantifying gait dynamics in varying physiologic and pathologic states.

  13. Decrease in Hurst exponent of human gait with aging and neurodegenerative diseases

    Science.gov (United States)

    Zhuang, Jian-Jun; Ning, Xin-Bao; Yang, Xiao-Dong; Hou, Feng-Zhen; Huo, Cheng-Yu

    2008-03-01

    In this paper the decrease in the Hurst exponent of human gait with aging and neurodegenerative diseases was observed by using an improved rescaled range (R/S) analysis method. It indicates that the long-range correlations of gait rhythm from young healthy people are stronger than those from the healthy elderly and the diseased. The result further implies that fractal dynamics in human gait will be altered due to weakening or impairment of neural control on locomotion resulting from aging and neurodegenerative diseases. Due to analysing short-term data sequences rather than long datasets required by most nonlinear methods, the algorithm has the characteristics of simplicity and sensitivity, most importantly, fast calculation as well as powerful anti-noise capacities. These findings have implications for modelling locomotor control and also for quantifying gait dynamics in varying physiologic and pathologic states.

  14. Influence of granulometry in the Hurst exponent of air liquid interfaces formed during capillary rising in a granular media

    Directory of Open Access Journals (Sweden)

    Gontijo Guilherme L.

    2017-01-01

    Full Text Available We report results concerning the fractal dimension of a air/fluid interface formed during the capillary rising of a fluid into a dense granular media. The system consists in a modified Hele-Shaw cell filled with grains at different granulometries and confined in a narrow gap between the glass plates. The system is then placed onto a water reservoir, and the liquid penetrates the medium due to capillary forces. We measure the Hurst exponent of the liquid/air interface with help of image processing, and follow the temporal evolution of the profiles. We observe that the Hurst exponent can be related with the granulometry, but the range of values are odd to the predicted values from models or theory.

  15. Improving autocorrelation regression for the Hurst parameter estimation of long-range dependent time series based on golden section search

    Science.gov (United States)

    Li, Ming; Zhang, Peidong; Leng, Jianxing

    2016-03-01

    This article presents an improved autocorrelation correlation function (ACF) regression method of estimating the Hurst parameter of a time series with long-range dependence (LRD) by using golden section search (GSS). We shall show that the present method is substantially efficient than the conventional ACF regression method of H estimation. Our research uses fractional Gaussian noise as a data case but the method introduced is applicable to time series with LRD in general.

  16. Hurst exponent of very long birth time series in XX century Romania. Social and religious aspects

    CERN Document Server

    Rotundo, G; Herteliu, C; Ileanu, B

    2015-01-01

    The Hurst exponent of very long birth time series in Romania has been extracted from official daily records, i.e. over 97 years between 1905 and 2001 included. The series result from distinguishing between families located in urban (U) or rural (R) areas, and belonging (Ox) or not (NOx) to the orthodox religion. Four time series combining both criteria, (U,R) and (Ox, NOx), are also examined. A statistical information is given on these sub-populations measuring their XX-th century state as a snapshot. However, the main goal is to investigate whether the "daily" production of babies is purely noisy or is fluctuating according to some non trivial fractional Brownian motion, - in the four types of populations, characterized by either their habitat or their religious attitude, yet living within the same political regime. One of the goals was also to find whether combined criteria implied a different behavior. Moreover, we wish to observe whether some seasonal periodicity exists. The detrended fluctuation analysis...

  17. Asymptotic scaling properties and estimation of the generalized Hurst exponents in financial data

    Science.gov (United States)

    Buonocore, R. J.; Aste, T.; Di Matteo, T.

    2017-04-01

    We propose a method to measure the Hurst exponents of financial time series. The scaling of the absolute moments against the aggregation horizon of real financial processes and of both uniscaling and multiscaling synthetic processes converges asymptotically towards linearity in log-log scale. In light of this we found appropriate a modification of the usual scaling equation via the introduction of a filter function. We devised a measurement procedure which takes into account the presence of the filter function without the need of directly estimating it. We verified that the method is unbiased within the errors by applying it to synthetic time series with known scaling properties. Finally we show an application to empirical financial time series where we fit the measured scaling exponents via a second or a fourth degree polynomial, which, because of theoretical constraints, have respectively only one and two degrees of freedom. We found that on our data set there is not clear preference between the second or fourth degree polynomial. Moreover the study of the filter functions of each time series shows common patterns of convergence depending on the momentum degree.

  18. Calculating Hurst exponent and neutron monitor data in a single parallel algorithm

    Science.gov (United States)

    Kussainov, A. S.; Kussainov, S. G.

    2015-09-01

    We implemented an algorithm for simultaneous parallel calculation of the Hurst exponent H and the fractal dimension D for the time series of interest. Parallel programming environment was provided by OpenMPI library installed on three machines networked in the virtual cluster and operated by Debian Wheeze operating system. We applied our program for a comparative analysis of week and a half long, one minute resolution, six channels data from neutron monitor. To ensure a faultless functioning of the written code we applied it to analysis of the random Gaussian noise signal and time series with manually introduced self-affinity features. Both of them have the well-known values of H and D. All results are in good correspondence with each other and supported by the modern theories on signal processing thus confirming the validity of the implemented algorithms. Our code could be used as a standalone tool for the different time series data analysis as well as for the further work on development and optimization of the parallel algorithms for the time series parameters calculations.

  19. ZC4H2 mutations are associated with arthrogryposis multiplex congenita and intellectual disability through impairment of central and peripheral synaptic plasticity.

    Science.gov (United States)

    Hirata, Hiromi; Nanda, Indrajit; van Riesen, Anne; McMichael, Gai; Hu, Hao; Hambrock, Melanie; Papon, Marie-Amélie; Fischer, Ute; Marouillat, Sylviane; Ding, Can; Alirol, Servane; Bienek, Melanie; Preisler-Adams, Sabine; Grimme, Astrid; Seelow, Dominik; Webster, Richard; Haan, Eric; MacLennan, Alastair; Stenzel, Werner; Yap, Tzu Ying; Gardner, Alison; Nguyen, Lam Son; Shaw, Marie; Lebrun, Nicolas; Haas, Stefan A; Kress, Wolfram; Haaf, Thomas; Schellenberger, Elke; Chelly, Jamel; Viot, Géraldine; Shaffer, Lisa G; Rosenfeld, Jill A; Kramer, Nancy; Falk, Rena; El-Khechen, Dima; Escobar, Luis F; Hennekam, Raoul; Wieacker, Peter; Hübner, Christoph; Ropers, Hans-Hilger; Gecz, Jozef; Schuelke, Markus; Laumonnier, Frédéric; Kalscheuer, Vera M

    2013-05-02

    Arthrogryposis multiplex congenita (AMC) is caused by heterogeneous pathologies leading to multiple antenatal joint contractures through fetal akinesia. Understanding the pathophysiology of this disorder is important for clinical care of the affected individuals and genetic counseling of the families. We thus aimed to establish the genetic basis of an AMC subtype that is associated with multiple dysmorphic features and intellectual disability (ID). We used haplotype analysis, next-generation sequencing, array comparative genomic hybridization, and chromosome breakpoint mapping to identify the pathogenic mutations in families and simplex cases. Suspected disease variants were verified by cosegregation analysis. We identified disease-causing mutations in the zinc-finger gene ZC4H2 in four families affected by X-linked AMC plus ID and one family affected by cerebral palsy. Several heterozygous females were also affected, but to a lesser degree. Furthermore, we found two ZC4H2 deletions and one rearrangement in two female and one male unrelated simplex cases, respectively. In mouse primary hippocampal neurons, transiently produced ZC4H2 localized to the postsynaptic compartment of excitatory synapses, and the altered protein influenced dendritic spine density. In zebrafish, antisense-morpholino-mediated zc4h2 knockdown caused abnormal swimming and impaired α-motoneuron development. All missense mutations identified herein failed to rescue the swimming defect of zebrafish morphants. We conclude that ZC4H2 point mutations, rearrangements, and small deletions cause a clinically variable broad-spectrum neurodevelopmental disorder of the central and peripheral nervous systems in both familial and simplex cases of both sexes. Our results highlight the importance of ZC4H2 for genetic testing of individuals presenting with ID plus muscle weakness and minor or major forms of AMC.

  20. 大豆低植酸突变体Gm-lpa-ZC-2的精细定位%Fine mapping of the Gm-lpa-ZC-2 gene in a low phytic acid soybean mutant

    Institute of Scientific and Technical Information of China (English)

    李佰权; 姜莹; 付旭军; 朱申龙; 朱丹华; 袁风杰

    2011-01-01

    降低大豆植酸含量对于改善大豆营养品质极其重要.通过诱变的方法筛选到大豆低植酸突变体Gm-lpa-ZC-2,经典遗传学分析表明:其突变性状由隐性单基因所控制,并被定位在大豆连锁群B2上.试验在大豆低植酸突变体Gm-lpa-ZC-2初步定位的基础上,通过构建较大的遗传群体,运用生物信息学发展新的连锁标记,结合大豆基因组学和传统定位的方法,进行突变基因的精确定位.结果表明:位于大豆B2连锁群上的Gm-lpa-ZC-2突变基因,与连锁标记Satt168和Satt416的遗传距离远大于初步定位的结果,为18.2 cM;在此基础上,利用大豆基因组序列信息,在Satt168标记的上游序列与目的基因之间的染色体片段,4 900~8 200 kb的区域中,发掘到9对在遗传群体亲本间具有多态性的SSR引物;其中SSR位点psm lpa-224,psm lpa-225和psm lpa-226与目的基因的距离仅为0.8 cM,实现了突变基因的精细定位.

  1. a Comparison of Three Hurst Exponent Approaches to Predict Nascent Bubbles in S&P500 Stocks

    Science.gov (United States)

    Fernández-Martínez, M.; Sánchez-Granero, M. A.; Muñoz Torrecillas, M. J.; McKelvey, Bill

    Since the pioneer contributions due to Vandewalle and Ausloos, the Hurst exponent has been applied by econophysicists as a useful indicator to deal with investment strategies when such a value is above or below 0.5, the Hurst exponent of a Brownian motion. In this paper, we hypothesize that the self-similarity exponent of financial time series provides a reliable indicator for herding behavior (HB) in the following sense: if there is HB, then the higher the price, the more the people will buy. This will generate persistence in the stocks which we shall measure by their self-similarity exponents. Along this work, we shall explore whether there is some connections between the self-similarity exponent of a stock (as a HB indicator) and the stock’s future performance under the assumption that the HB will last for some time. With this aim, three approaches to calculate the self-similarity exponent of a time series are compared in order to determine which performs best to identify the transition from random efficient market behavior to HB and hence, to detect the beginning of a bubble. Generalized Hurst Exponent, Detrended Fluctuation Analysis, and GM2 algorithms have been tested. Traditionally, researchers have focused on identifying the beginning of a crash. We study the beginning of the transition from efficient market behavior to a market bubble, instead. Our empirical results support that the higher (respectively the lower) the self-similarity index, the higher (respectively the lower) the mean of the price change, and hence, the better (respectively the worse) the performance of the corresponding stock. This would imply, as a consequence, that the transition process from random efficient market to HB has started. For experimentation purposes, S&P500 stock Index constituted our main data source.

  2. Search for the Neutral Current Top Quark Decay t-->Zc Using Ratio of Z-Boson + 4 Jets to W-Boson + 4 Jets Production

    Energy Technology Data Exchange (ETDEWEB)

    Aaltonen, T.; /Helsinki Inst. of Phys.; Adelman, Jahred A.; /Chicago U., EFI; Akimoto, T.; /Tsukuba U.; Alvarez Gonzalez, B.; /Cantabria Inst. of Phys.; Amerio, S.; /INFN, Padua; Amidei, Dante E.; /Michigan U.; Anastassov, A.; /Northwestern U.; Annovi, Alberto; /Frascati; Antos, Jaroslav; /Comenius U.; Apollinari, G.; /Fermilab; Apresyan, A.; /Purdue U. /Waseda U.

    2009-05-01

    We have used the Collider Detector at Fermilab (CDF II) to search for the flavor-changing neutral-current (FCNC) top quark decay t {yields} Zc using a technique employing ratios of W and Z production, measured in p{bar p} data corresponding to an integrated luminosity of 1.52 fb{sup -1}. The analysis uses a comparison of two decay chains, p{bar p} {yields} t{bar t} {yields} WbWb {yields} {ell}{nu}bjjb and p{bar p} {yields} t{bar t} {yields} ZcWb {yields} {ell}{ell}cjjb, to cancel systematic uncertainties in acceptance, efficiency, and luminosity. We validate the modeling of acceptance and efficiency for lepton identification over the multi-year dataset using another ratio of W and Z production, in this case the observed ratio of inclusive production of W to Z bosons. To improve the discrimination against standard model backgrounds to top quark decays, we calculate the top quark mass for each event with two leptons and four jets assuming it is a t{bar t} event with one of the top quarks decaying to Zc. For additional background discrimination we require at least one jet to be identified as originating from a b-quark. No significant signal is found and we set an upper limit on the FCNC branching ratio Br(t {yields} Zc) using a likelihood constructed from the {ell}{ell}cjjb top quark mass distribution and the number of {ell}{nu}bjjb events. Limits are set as a function of the helicity of the Z boson produced in the FCNC decay. For 100% longitudinally polarized Z bosons we find limits of 8.3% and 9.3% (95% C.L.) depending on the assumptions regarding the theoretical top quark pair production cross-section.

  3. Production of a microcapsule agent of chromate-reducing Lysinibacillus fusiformis ZC1 and its application in remediation of chromate-spiked soil.

    Science.gov (United States)

    Huang, Jun; Li, Jingxin; Wang, Gejiao

    2016-01-01

    Lysinibacillus fusiformis ZC1 is an efficient Cr(VI)-reducing bacterium that can transform the toxic and soluble chromate [Cr(VI)] form to the less toxic and precipitated chromite form [Cr(III)]. As such, this strain might be applicable for bioremediation of Cr(VI) in soil by reducing its bioavailability. The study objective was to prepare a microcapsule agent of strain ZC1 for bioremediation of Cr(VI)-contaminated soil. Using a single-factor orthogonal array design, the optimal fermentation medium was obtained and consisted of 6 g/L corn flour, 12 g/L soybean flour, 8 g/L NH4Cl and 6 g/L CaCl2. After enlarged fermentation, the cell and spore densities were 5.9 × 10(9) and 1.7 × 10(8) cfu/mL, respectively. The fermentation products were collected and embedded with 1 % gum arabic and 1 % sorbitol as the microcapsule carriers and were subsequently spray-dried. Strain ZC1 exhibited viable cell counts of (3.6 ± 0.44) × 10(10) cfu/g dw after 50-day storage at room temperature. In simulated soil bioremediation experiments, 67 % of Cr(VI) was reduced in 5 days with the inoculation of this microcapsule agent, and the Cr(VI) concentration was below the soil Cr(VI) standard level. The results demonstrated that the microcapsule agent of strain ZC1 is efficient for bioremediation of Cr(VI)-contaminated soil.

  4. Observation of $e^+e^-\\to \\pi^0\\pi^0 h_c$ and a neutral charmoniumlike structure $Z_c(4020)^0$

    CERN Document Server

    Ablikim, M; Ai, X C; Albayrak, O; Albrecht, M; Ambrose, D J; Amoroso, A; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Bennett, D W; Bennett, J V; Bertani, M; Bettoni, D; Bian, J M; Bianchi, F; Boger, E; Bondarenko, O; Boyko, I; Briere, R A; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, H Y; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Chu, Y P; Cibinetto, G; Cronin-Hennessy, D; Dai, H L; Dai, J P; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, L Y; Dong, M Y; Du, S X; Duan, P F; Fan, J Z; Fang, J; Fang, S S; Fang, X; Fang, Y; Fava, L; Feldbauer, F; Felici, G; Feng, C Q; Fioravanti, E; Fu, C D; Gao, Q; Gao, Y; Garzia, I; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, T; Guo, Y; Guo, Y P; Haddadi, Z; Hafner, A; Han, S; Han, Y L; Harris, F A; He, K L; He, Z Y; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Hu, Y; Huang, G M; Huang, G S; Huang, H P; Huang, J S; Huang, X T; Huang, Y; Hussain, T; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, L W; Jiang, X S; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Johansson, T; Julin, A; Kalantar-Nayestanaki, N; Kang, X L; Kang, X S; Kavatsyuk, M; Ke, B C; Kliemt, R; Kloss, B; Kolcu, O B; Kopf, B; Kornicer, M; Kuehn, W; Kupsc, A; Lai, W; Lange, J S; Lara, M; Larin, P; Leyhe, M; Li, Cheng; Li, D M; Li, F; Li, G; Li, H B; Li, J C; Li, Jin; Li, K; Li, Q J; Li, T; Li, W D; Li, W G; Li, X L; Li, X M; Li, X N; Li, X Q; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Lin, D X; Liu, B J; Liu, C L; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H B; Liu, H H; Liu, H M; Liu, J; Liu, J P; Liu, J Y; Liu, K; Liu, K Y; Liu, L D; Liu, Q; Liu, S B; Liu, X; Liu, X X; Liu, Y B; Liu, Z A; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, H J; Lu, J G; Lu, R Q; Lu, Y; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lv, M; Lyu, X R; Ma, F C; Ma, H L; Ma, Q M; Ma, S; Ma, T; Ma, X N; Ma, X Y; Maas, F E; Maggiora, M; Malik, Q A; Mao, Y J; Mao, Z P; Marcello, S; Messchendorp, J G; Min, J; Min, T J; Mitchell, R E; Mo, X H; Mo, Y J; Moeini, H; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nerling, F; Nikolaev, I B; Ning, Z; Nisar, S; Niu, S L; Niu, X Y; Olsen, S L; Ouyang, Q; Pacetti, S; Patteri, P; Pelizaeus, M; Peng, H P; Peters, K; Ping, J L; Ping, R G; Poling, R; Pu, Y N; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, N; Qin, X S; Qin, Y; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Ren, H L; Ripka, M; Rong, G; Ruan, X D; Santoro, V; Sarantsev, A; Savrié, M; Schoenning, K; Schumann, S; Shan, W; Shao, M; Shen, C P; Shen, P X; Shen, X Y; Sheng, H Y; Shepherd, M R; Song, W M; Song, X Y; Sosio, S; Spataro, S; Spruck, B; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Tiemens, M; Toth, D; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, B L; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, Q J; Wang, S G; Wang, W; Wang, X F; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z H; Wang, Z Y; Wei, D H; Wei, J B; Weidenkaff, P; Wen, S P; Wiedner, U; Wolke, M; Wu, L H; Wu, Z; Xia, L G; Xia, Y; Xiao, D; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, L; Xu, Q J; Xu, Q N; Xu, X P; Xue, Z; Yan, L; Yan, W B; Yan, W C; Yan, Y H; Yang, H X; Yang, L; Yang, Y; Yang, Y X; Ye, H; Ye, M; Ye, M H; Yin, J H; Yu, B X; Yu, C X; Yu, H W; Yu, J S; Yuan, C Z; Yuan, W L; Yuan, Y; Yuncu, A; Zafar, A A; Zallo, A; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H T; Zhang, H Y; Zhang, J J; Zhang, J L; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, K; Zhang, L; Zhang, S H; Zhang, X J; Zhang, X Y; Zhang, Y; Zhang, Y H; Zhang, Z H; Zhang, Z P; Zhang, Z Y; Zhao, G; Zhao, J W; Zhao, J Y; Zhao, J Z; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, Q W; Zhao, S J; Zhao, T C; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, Y H; Zhong, B; Zhou, L; Zhou, Li; Zhou, X; Zhou, X K; Zhou, X R; Zhou, X Y; Zhu, K; Zhu, K J; Zhu, S; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, J; Zou, B S; Zou, J H

    2014-01-01

    Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of $\\sqrt{s}$=4.23, 4.26, and 4.36 GeV, we observe $e^+e^-\\to \\pi^0\\pi^0 h_c$ for the first time. The Born cross sections are measured and found to be about half of those of $e^+e^- \\to \\pi^+\\pi^-h_c$ within less than 2$\\sigma$. In the $\\pi^0h_c$ mass spectrum, a structure at 4.02~GeV/$c^2$ that is most likely the neutral isospin partner of the $Z_c(4020)^{\\pm}$ observed in the process of $e^+e^- \\to \\pi^+\\pi^-h_c$ is found. A fit to the $\\pi^0 h_c$ invariant mass spectrum with the width of the $Z_c(4020)^0$ fixed to that of its charged isospin partner and possible interferences with non-$Z_c(4020)^0$ amplitudes neglected, gives a mass of ($4023.9\\pm 2.2 \\pm 3.8$)~MeV/$c^2$ for the $Z_c(4020)^0$, where the first error is statistical and the second systematic.

  5. Trend Prediction for Stock Price Using Dynamic Hurst Index%动态Hurst指数对股票价格(指数)趋势的判断

    Institute of Scientific and Technical Information of China (English)

    赵仕军; 徐丙振

    2011-01-01

    Hurst Index is defined in fractal chaos theory and time series to determine groups of statistical parameters, which has been applied in marketing process. In this paper, we calculate the Hurst index based on the data collected from the real stock market price. Upon certain conditions, stock price movement does not fit the Brownian motion model, indicating the invalidity of the given stock market. The presented method is aimed to calculate the statistics for long-time Hurst index of a large cycle so as to calculate the'dynamic Hurst index.%采用长时间、大周期统计Hurst指数,进而计算出动态Hurst指数,从而判断实际股票市场的股票指数的趋势以及动态Hurst指数的适应范围,认为动态Hurst指数在证券投资中有一定的参考价值,可以对股票价格或指数的长时趋势进行预测.

  6. A Different Statistic for the Management of Portfolios - the Hurst Exponent: Persistent, Antipersistent or Random Time Series?

    Directory of Open Access Journals (Sweden)

    Ana-Maria CALOMFIR (METESCU

    2015-12-01

    Full Text Available In recent years, research in the capital markets and management of portfolios has been producing more questions than it has been answering: the need for a new paradigm or a new way of looking at things has become more and more concludent. The existing and classical view of capital markets, based on efficient market hypothesis, has a definite theory for the last six decades, but it is still not capable of significantly increase the understanding of how capital markets function. The purpose of this article is to theoretically describe a less used statistic coefficient, having a vast area of applicability due to its robustness, and which can easily divide the random series from a non-random series, even if the random series is non-Gaussian: the Hurst exponent.

  7. Hurst exponent used as a tool to differentiate between magmatic and fluid-induced processes as reflected in crystal geochemistry

    Science.gov (United States)

    Domonik, A.; Słaby, E.; Śmigielski, M.

    2012-04-01

    A self-similarity parameter, the Hurst exponent (H) (called also roughness exponent) has been used to show the long-range dependence of element behaviour during the processes. The H value ranges between 0 and 1; a value of 0.5 indicates a random distribution indistinguishable from noise. For values greater or less than 0.5, the system shows non-linear dynamics. H 0.5 corresponds to increasing persistence (less chaotic). Such persistence is characterized as an effect of a long-term memory, and thus by a large degree of positive correlation. In theory, the preceding data constantly affect the next in the whole temporal series. Applied to chaotic dynamics, the system shows a subtle sensitivity to initial conditions. The process can show some degree of chaos, due to local variations, but generally, the trend preserves its persistent character through time. If the exponent value is low, the process shows frequent and sudden reversals e.g. the trends of such a process show mutual negative correlation of the succeding values in the data series. Thus, the system can be described as having a high degree of deterministic chaos. Alkali feldspar megacrysts grown from mixed magmas and recrystallized due to interaction with fluids have been selected for the study (Słaby et al., 2011). Hurst exponent variability has been calculated within some primary-magmatic and secondary-recrystallized crystal domains for some elements redistributed by crystal fluid interaction. Based on the Hurst exponent value two different processes can easily be recognized. In the core of the megacrysts the element distribution can be ascribed to magmatic growth. By contrast, the marginal zones can relate to inferred late crystal-fluid interactions. Both processes are deterministic, not random. The spatial distribution of elements in the crystal margins is irregular, with high-H values identifying the process as persistent. The trace element distributions in feldspar cores are almost homogeneous and only

  8. Use and misuse of some Hurst parameter estimators applied to stationary and non-stationary financial time series

    Science.gov (United States)

    Serinaldi, Francesco

    2010-07-01

    The detection of long range dependence (LRD) is an important task in time series analysis. LRD is often summarized by the well-known Hurst parameter (or exponent) H∈[0,1], which can be estimated by a number of methods. Some of these techniques are designed to be applied to signals behaving as a stationary fractional Gaussian noise (fGn), whereas others imply that the analyzed time series behave as a non-stationary fractional Brownian motion (fBm). Moreover, some estimators do not yield the Hurst parameter but indexes related to H and ranging outside the unit interval. Therefore, the fGn or fBm nature of the studied time series has to be preliminarily analyzed before applying any estimation method, and the relationships between H and the indexes resulting from the analyses have to be taken into account to obtain coherent results. Since fGn-like series represent the increments of fBm-like processes and both the signals are characterized by the same H value by definition, estimators designed for fGn-like series can be applied to fBm-like sequences after preventive differentiation, and conversely estimators designed for fBm-like processes can be applied to fGn-like series after preventive integration. The signal characterization is particularly important when H is estimated on financial time series because the returns represent the first difference of price time series, which are often assumed to behave like self-affine sequences. The analysis of simulated fGn and fBm time series shows that all the considered methods yield comparable H values when properly applied. The reanalysis of several market price time series already studied in the literature points out that a correct application of the estimators (supported by a preventive signal classification) yields homogeneous H values allowing for a useful cross-validation of results reported in different works. Moreover, some conclusions reported in the literature about the anti-persistence of some financial series are

  9. ESTIMACIÓN DEL EXPONENTE DE HURST Y DIMENSIÓN FRACTAL PARA EL ANÁLISIS DE SERIES DE TIEMPO DE ABSORBANCIA UV-VIS

    Directory of Open Access Journals (Sweden)

    Leonardo Plazas Nossa

    2014-01-01

    Full Text Available El objetivo de este trabajo es estimar el exponente o parámetro de Hurst y la dimensión fractal para el análisis de series de tiempo de espectrometría UV-Vis, utilizando el análisis de componentes principales PCA (Principal Component Analysis. El análisis se realiza para comprender si las series de tiempo de absorbancia UV-Vis son persistentes, anti-persistentes, determinísticas o si son ruido blanco. Se utilizaron tres diferentes series de tiempo de absorbancia UV-Vis para tres diferentes sitios de estudio: (i Planta de tratamiento de aguas residuales Salitre (PTAR en Bogotá; (ii Estación elevadora de Gibraltar en Bogotá (EEG; y (iii Planta de tratamiento de aguas residuales San Fernando (PTAR en Itagüí (sur de Medellín. Cada una de las series de tiempo tiene igual número de muestras (5705. Se redujo la dimensionalidad de los espectros de absorbancia, dada su alta correlación, con PCA y se utilizó para cada sitio de estudio la primera componente principal. Esta componente principal explicó entre el 82% al 94% de la variabilidad para los tres sitios de estudio. Se determinaron los exponentes de Hurst: (i 0.8 para PTAR Salitre; (ii 0.85 para EEG; y (iii 0.89 para PTAR San Fernando. A partir de los valores de los exponentes de Hurst se determinan las dimensiones fractales para las tres series de tiempo de absorbancia UV-Vis en los tres sitios de estudio y se obtiene en promedio una dimensión fractal de 1153. Las tres series de tiempo de absorbancia UV-Vis son persistentes y con alta auto-similitud, dado que el exponente de Hurst es mayor a 0.5.

  10. Generalized Hurst exponent and multifractal function of original and translated texts mapped into frequency and length time series.

    Science.gov (United States)

    Ausloos, M

    2012-09-01

    A nonlinear dynamics approach can be used in order to quantify complexity in written texts. As a first step, a one-dimensional system is examined: two written texts by one author (Lewis Carroll) are considered, together with one translation into an artificial language (i.e., Esperanto) are mapped into time series. Their corresponding shuffled versions are used for obtaining a baseline. Two different one-dimensional time series are used here: one based on word lengths (LTS), the other on word frequencies (FTS). It is shown that the generalized Hurst exponent h(q) and the derived f(α) curves of the original and translated texts show marked differences. The original texts are far from giving a parabolic f(α) function, in contrast to the shuffled texts. Moreover, the Esperanto text has more extreme values. This suggests cascade model-like, with multiscale time-asymmetric features as finally written texts. A discussion of the difference and complementarity of mapping into a LTS or FTS is presented. The FTS f(α) curves are more opened than the LTS ones.

  11. Generalized Hurst exponent and multifractal function of original and translated texts mapped into frequency and length time series

    CERN Document Server

    Ausloos, Marcel

    2012-01-01

    A nonlinear dynamics approach can be used in order to quantify complexity in written texts. As a first step, a one-dimensional system is examined : two written texts by one author (Lewis Carroll) are considered, together with one translation, into an artificial language, i.e. Esperanto are mapped into time series. Their corresponding shuffled versions are used for obtaining a "base line". Two different one-dimensional time series are used here: (i) one based on word lengths (LTS), (ii) the other on word frequencies (FTS). It is shown that the generalized Hurst exponent $h(q)$ and the derived $f(\\alpha)$ curves of the original and translated texts show marked differences. The original "texts" are far from giving a parabolic $f(\\alpha)$ function, - in contrast to the shuffled texts. Moreover, the Esperanto text has more extreme values. This suggests cascade model-like, with multiscale time asymmetric features as finally written texts. A discussion of the difference and complementarity of mapping into a LTS or F...

  12. Review Article: On the relation between the seismic activity and the Hurst exponent of the geomagnetic field at the time of the 2000 Izu swarm

    Directory of Open Access Journals (Sweden)

    F. Masci

    2013-09-01

    Full Text Available Many papers document the observation of earthquake-related precursory signatures in geomagnetic field data. However, the significance of these findings is ambiguous because the authors did not adequately take into account that these signals could have been generated by other sources, and the seismogenic origin of these signals have not been validated by comparison with independent datasets. Thus, they are not reliable examples of magnetic disturbances induced by the seismic activity. Hayakawa et al. (2004 claim that at the time of the 2000 Izu swarm the Hurst exponent of the Ultra-Low-Frequency (ULF: 0.001–10 Hz band of the geomagnetic field varied in accord with the energy released by the seismicity. The present paper demonstrates that the behaviour of the Hurst exponent was insufficiently investigated and also misinterpreted by the authors. We clearly show that during the Izu swarm the changes of the Hurst exponent were strongly related to the level of global geomagnetic activity and not to the increase of the local seismic activity.

  13. Review "On the relation between the seismic activity and the Hurst exponent of the geomagnetic field at the time of the 2000 Izu swarm"

    Directory of Open Access Journals (Sweden)

    F. Masci

    2013-03-01

    Full Text Available Many papers document the observation of earthquake-related precursory signatures in geomagnetic field data. However, the significance of these findings is ambiguous because the authors did not adequately take into account that these signals could have been generated by other sources, and the seismogenic origin of these signals have not been validated by comparison with independent datasets. Thus, they are not reliable examples of magnetic disturbances induced by the seismic activity. Hayakawa et al. (2004 claim that at the time of the 2000 Izu swarm the Hurst exponent of the Ultra-Low-Frequency (ULF: 0.001–10 Hz band of the geomagnetic field varied in accord with the energy released by the seismicity. The present paper demonstrates that the behaviour of the Hurst exponent was insufficiently investigated and also misinterpreted by the authors. We clearly show that during the Izu swarm the changes of the Hurst exponent were strongly related to the level of global geomagnetic activity and not to the increase of the local seismic activity.

  14. Confirmation of a charged charmoniumlike state $Z_c(3885)^{\\mp}$ in $e^+e^-\\to\\pi^{\\pm}(D\\bar{D}^*)^\\mp$ with double $D$ tag

    CERN Document Server

    Ablikim, M; Ai, X C; Albayrak, O; Albrecht, M; Ambrose, D J; Amoroso, A; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Bennett, D W; Bennett, J V; Bertani, M; Bettoni, D; Bian, J M; Bianchi, F; Boger, E; Boyko, I; Briere, R A; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, H Y; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Cibinetto, G; Dai, H L; Dai, J P; Dbeyssi, A; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, L Y; Dong, M Y; Du, S X; Duan, P F; Eren, E E; Fan, J Z; Fang, J; Fang, S S; Fang, X; Fang, Y; Fava, L; Feldbauer, F; Felici, G; Feng, C Q; Fioravanti, E; Fritsch, M; Fu, C D; Gao, Q; Gao, X Y; Gao, Y; Gao, Z; Garzia, I; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, Y; Guo, Y P; Haddadi, Z; Hafner, A; Han, S; Hao, X Q; Harris, F A; He, K L; He, X Q; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Hu, Y; Huang, G M; Huang, G S; Huang, J S; Huang, X T; Huang, Y; Hussain, T; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, L W; Jiang, X S; Jiang, X Y; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Johansson, T; Julin, A; Kalantar-Nayestanaki, N; Kang, X L; Kang, X S; Kavatsyuk, M; Ke, B C; Kiese, P; Kliemt, R; Kloss, B; Kolcu, O B; Kopf, B; Kornicer, M; Kuehn, W; Kupsc, A; Lange, J S; Lara, M; Larin, P; Leng, C; Li, C; Li, Cheng; Li, D M; Li, F; Li, F Y; Li, G; Li, H B; Li, J C; Li, Jin; Li, K; Li, Lei; Li, P R; Li, T; Li, W D; Li, W G; Li, X L; Li, X M; Li, X N; Li, X Q; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Lin, D X; Liu, B J; Liu, C L; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H B; Liu, H H; Liu, H M; Liu, J; Liu, J B; Liu, J P; Liu, J Y; Liu, K; Liu, K Y; Liu, L D; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, Y B; Liu, Z A; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, H J; Lu, J G; Lu, Y; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lyu, X R; Ma, F C; Ma, H L; Ma, L L; Ma, Q M; Ma, T; Ma, X N; Ma, X Y; Maas, F E; Maggiora, M; Mao, Y J; Mao, Z P; Marcello, S; Messchendorp, J G; Min, J; Mitchell, R E; Mo, X H; Mo, Y J; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nerling, F; Nikolaev, I B; Ning, Z; Nisar, S; Niu, S L; Niu, X Y; Olsen, S L; Ouyang, Q; Pacetti, S; Patteri, P; Pelizaeus, M; Peng, H P; Peters, K; Pettersson, J; Ping, J L; Ping, R G; Poling, R; Prasad, V; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, N; Qin, X S; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Ripka, M; Rong, G; Rosner, Ch; Ruan, X D; Santoro, V; Sarantsev, A; Savrié, M; Schoenning, K; Schumann, S; Shan, W; Shao, M; Shen, C P; Shen, P X; Shen, X Y; Sheng, H Y; Song, W M; Song, X Y; Sosio, S; Spataro, S; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Tiemens, M; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, S G; Wang, W; Wang, X F; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z H; Wang, Z Y; Weber, T; Wei, D H; Wei, J B; Weidenkaff, P; Wen, S P; Wiedner, U; Wolke, M; Wu, L H; Wu, Z; Xia, L G; Xia, Y; Xiao, D; Xiao, H; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, L; Xu, Q J; Xu, X P; Yan, L; Yan, W B; Yan, W C; Yan, Y H; Yang, H J; Yang, H X; Yang, L; Yang, Y; Yang, Y X; Ye, M; Ye, M H; Yin, J H; Yu, B X; Yu, C X; Yu, J S; Yuan, C Z; Yuan, W L; Yuan, Y; Yuncu, A; Zafar, A A; Zallo, A; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J J; Zhang, J L; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, K; Zhang, L; Zhang, X Y; Zhang, Y; Zhang, Y N; Zhang, Y H; Zhang, Y T; Zhang, Yu; Zhang, Z H; Zhang, Z P; Zhang, Z Y; Zhao, G; Zhao, J W; Zhao, J Y; Zhao, J Z; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, Q W; Zhao, S J; Zhao, T C; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, W J; Zheng, Y H; Zhong, B; Zhou, L; Zhou, X; Zhou, X K; Zhou, X R; Zhou, X Y; Zhu, K; Zhu, K J; Zhu, S; Zhu, S H; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, J; Zotti, L; Zou, B S; Zou, J H

    2015-01-01

    We present a study of the process $e^+e^-\\to\\pi^{\\pm}(D\\bar{D}^*)^{\\mp}$ using data samples of 1092 pb$^{-1}$ at $\\sqrt{s}=4.23$ GeV and 826 pb$^{-1}$ at $\\sqrt{s}=4.26$ GeV collected with the BESIII detector at the BEPCII storage ring. With full reconstruction of the $D$ meson pair and the bachelor $\\pi^{\\pm}$ in the final state, we confirm the existence of the charged structure $Z_c(3885)^{\\mp}$ in the $(D\\bar{D}^*)^{\\mp}$ system in the two isospin processes $e^+e^-\\to\\pi^+D^0D^{*-}$ and $e^+e^-\\to\\pi^+D^-D^{*0}$. By performing a simultaneous fit, the statistical significance of $Zc(3885)^{\\mp}$ signal is determined to be greater than 10$\\sigma$, and its pole mass and width are measured to be $M_{\\rm{pole}}$=(3881.7$\\pm$1.6(stat.)$\\pm$2.1(syst.)) MeV/$c^2$ and $\\Gamma_{\\rm{pole}}$=(26.6$\\pm$2.0(stat.)$\\pm$2.3(syst.)) MeV, respectively. The Born cross section times the $(D\\bar{D}^*)^{\\mp}$ branching fraction ($\\sigma(e^+e^-\\to\\pi^{\\pm}Z_{c}(3885)^{\\mp}) \\times Br(Z_{c}(3885)^{\\mp}\\to(D\\bar{D}^*)^{\\mp})$) is ...

  15. Observation of a neutral charmoniumlike state $Z_c(4025)^0$ in $e^{+} e^{-} \\to (D^{*} \\bar{D}^{*})^{0} \\pi^0$

    CERN Document Server

    Ablikim, M; Ai, X C; Albayrak, O; Albrecht, M; Ambrose, D J; Amoroso, A; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Bennett, D W; Bennett, J V; Bertani, M; Bettoni, D; Bian, J M; Bianchi, F; Boger, E; Boyko, I; Briere, R A; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, H Y; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Cibinetto, G; Dai, H L; Dai, J P; Dbeyssi, A; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, L Y; Dong, M Y; Du, S X; Duan, P F; Eren, E E; Fan, J Z; Fang, J; Fang, S S; Fang, X; Fang, Y; Fava, L; Feldbauer, F; Felici, G; Feng, C Q; Fioravanti, E; Fritsch, M; Fu, C D; Gao, Q; Gao, X Y; Gao, Y; Gao, Z; Garzia, I; Geng, C; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, Y; Guo, Y P; Haddadi, Z; Hafner, A; Han, S; Han, Y L; Hao, X Q; Harris, F A; He, K L; He, Z Y; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Hu, Y; Huang, G M; Huang, G S; Huang, H P; Huang, J S; Huang, X T; Huang, Y; Hussain, T; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, L W; Jiang, X S; Jiang, X Y; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Johansson, T; Julin, A; Kalantar-Nayestanaki, N; Kang, X L; Kang, X S; Kavatsyuk, M; Ke, B C; Kiese, P; Kliemt, R; Kloss, B; Kolcu, O B; Kopf, B; Kornicer, M; Kühn, W; Kupsc, A; Lange, J S; Lara, M; Larin, P; Leng, C; Li, C; Li, C H; Li, Cheng; Li, D M; Li, F; Li, G; Li, H B; Li, J C; Li, Jin; Li, K; Li, Lei; Li, P R; Li, T; Li, W D; Li, W G; Li, X L; Li, X M; Li, X N; Li, X Q; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Lin, D X; Liu, B J; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H B; Liu, H H; Liu, H M; Liu, J; Liu, J B; Liu, J P; Liu, J Y; Liu, K; Liu, K Y; Liu, L D; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, X X; Liu, Y B; Liu, Z A; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, H J; Lu, J G; Lu, R Q; Lu, Y; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lv, M; Lyu, X R; Ma, F C; Ma, H L; Ma, L L; Ma, Q M; Ma, T; Ma, X N; Ma, X Y; Maas, F E; Maggiora, M; Mao, Y J; Mao, Z P; Marcello, S; Messchendorp, J G; Min, J; Min, T J; Mitchell, R E; Mo, X H; Mo, Y J; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nerling, F; Nikolaev, I B; Ning, Z; Nisar, S; Niu, S L; Niu, X Y; Olsen, S L; Ouyang, Q; Pacetti, S; Patteri, P; Pelizaeus, M; Peng, H P; Peters, K; Pettersson, J; Ping, J L; Ping, R G; Poling, R; Prasad, V; Pu, Y N; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, N; Qin, X S; Qin, Y; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Ren, H L; Ripka, M; Rong, G; Rosner, Ch; Ruan, X D; Santoro, V; Sarantsev, A; Savrié, M; Schoenning, K; Schumann, S; Shan, W; Shao, M; Shen, C P; Shen, P X; Shen, X Y; Sheng, H Y; Song, W M; Song, X Y; Sosio, S; Spataro, S; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Tiemens, M; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, B L; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, S G; Wang, W; Wang, X F; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z H; Wang, Z Y; Weber, T; Wei, D H; Wei, J B; Weidenkaff, P; Wen, S P; Wiedner, U; Wolke, M; Wu, L H; Wu, Z; Xia, L G; Xia, Y; Xiao, D; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, L; Xu, Q J; Xu, Q N; Xu, X P; Yan, L; Yan, W B; Yan, W C; Yan, Y H; Yang, H J; Yang, H X; Yang, L; Yang, Y; Yang, Y X; Ye, H; Ye, M; Ye, M H; Yin, J H; Yu, B X; Yu, C X; Yu, H W; Yu, J S; Yuan, C Z; Yuan, W L; Yuan, Y; Yuncu, A; Zafar, A A; Zallo, A; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J J; Zhang, J L; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, K; Zhang, L; Zhang, S H; Zhang, X Y; Zhang, Y; Zhang, Y N; Zhang, Y H; Zhang, Y T; Zhang, Yu; Zhang, Z H; Zhang, Z P; Zhang, Z Y; Zhao, G; Zhao, J W; Zhao, J Y; Zhao, J Z; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, Q W; Zhao, S J; Zhao, T C; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, W J; Zheng, Y H; Zhong, B; Zhou, L; Zhou, Li; Zhou, X; Zhou, X K; Zhou, X R; Zhou, X Y; Zhu, K; Zhu, K J; Zhu, S; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuan, J; Zotti, L; Zou, B S; Zou, J H

    2015-01-01

    We report a study of the process $e^{+} e^{-} \\to (D^{*} \\bar{D}^{*})^{0} \\pi^0$ using $e^+e^-$ collision data samples with integrated luminosity of $1092 \\rm{pb}^{-1}$ at $\\sqrt{s}=4.23 \\rm{GeV}$ and $826 \\rm{pb}^{-1}$ at $\\sqrt{s}=4.26 \\rm{GeV}$ collected with the BESIII detector at the BEPCII storage ring. We observe a new neutral structure near the $(D^{*} \\bar{D}^{*})^{0}$ mass threshold in the $\\pi^0$ recoil mass spectrum, which we denote as $Z_{c}(4025)^{0}$. Assuming a Breit-Wigner line shape, its pole mass and pole width are determined to be $(4025.5^{+2.0}_{-4.7}\\pm3.1) \\rm{MeV}/c^2$ and $(23.0\\pm 6.0\\pm 1.0) \\rm{MeV}$, respectively. The statistical significance of the observation is $7.4\\sigma$. The Born cross sections of $e^{+}e^{-}\\to Z_{c}(4025)^{0} \\pi^0\\to (D^{*} \\bar{D}^{*})^{0}\\pi^0$ are measured to be $(61.6\\pm8.2\\pm9.0) \\rm{pb}$ at $\\sqrt{s}=4.23 \\rm{GeV}$ and $(43.4\\pm8.0\\pm5.4) \\rm{pb}$ at $\\sqrt{s}=4.26 \\rm{GeV}$. The first uncertainties are statistical and the second are systematic.

  16. Low-energy Scattering of $(D^{*}\\bar{D}^{*})^\\pm$ System and the Resonance-like Structure $Z_c(4025)$

    CERN Document Server

    Chen, Ying; Lei, Yu-Hong; Li, Ning; Liang, Jian; Liu, Chuan; Liu, Jin-Long; Liu, Yong-Fu; Liu, Yu-Bin; Liu, Zhaofeng; Ma, Jian-Ping; Wang, Zhan-Lin; Zhang, Jian-Bo

    2015-01-01

    In this paper, low-energy scattering of the $(D^{*}\\bar{D}^{*})^\\pm$ meson system is studied within L\\"uscher's finite-size formalism using $N_{f}=2$ twisted mass gauge field configurations. With three different pion mass values, the $s$-wave threshold scattering parameters, namely the scattering length $a_0$ and the effective range $r_0$, are extracted in $J^P=1^+$ channel. Our results indicate that, in this particular channel, the interaction between the two vector charmed mesons is weakly repulsive in nature hence do not support the possibility of a shallow bound state for the two mesons, at least for the pion mass values being studied. This study provides some useful information on the nature of the newly discovered resonance-like structure $Z_c(4025)$ observed in various experiments.

  17. Coating formation by plasma electrolytic oxidation on ZC71/SiC/12p-T6 magnesium metal matrix composite

    Science.gov (United States)

    Arrabal, R.; Matykina, E.; Skeldon, P.; Thompson, G. E.

    2009-02-01

    Plasma electrolytic oxidation (PEO) of a ZC71/SiC/12p-T6 magnesium metal matrix composite (MMC) is investigated in relation to coating growth and corrosion behaviour. PEO treatment was undertaken at 350 mA cm -2 (rms) and 50 Hz with a square waveform in stirred 0.05 M Na 2SiO 3.5H 2O/0.1 M KOH electrolyte. The findings revealed thick, dense oxide coatings, with an average hardness of 3.4 GPa, formed at an average rate of ˜1 μm min -1 for treatment times up to 100 min and ˜0.2 μm min -1 for later times. The coatings are composed mainly of MgO and Mg 2SiO 4, with an increased silicon content in the outer regions, constituting PEO treatment.

  18. On the relationship between the Hurst exponent, the ratio of the mean square successive difference to the variance, and the number of turning points

    Science.gov (United States)

    Tarnopolski, Mariusz

    2016-11-01

    The long range dependence of the fractional Brownian motion (fBm), fractional Gaussian noise (fGn), and differentiated fGn (DfGn) is described by the Hurst exponent H. Considering the realizations of these three processes as time series, they might be described by their statistical features, such as half of the ratio of the mean square successive difference to the variance, A, and the number of turning points, T. This paper investigates the relationships between A and H, and between T and H. It is found numerically that the formulae A(H) = aebH in case of fBm, and A(H) = a + bHc for fGn and DfGn, describe well the A(H) relationship. When T(H) is considered, no simple formula is found, and it is empirically found that among polynomials, the fourth and second order description applies best. The most relevant finding is that when plotted in the space of (A , T) , the three process types form separate branches. Hence, it is examined whether A and T may serve as Hurst exponent indicators. Some real world data (stock market indices, sunspot numbers, chaotic time series) are analyzed for this purpose, and it is found that the H's estimated using the H(A) relations (expressed as inverted A(H) functions) are consistent with the H's extracted with the well known wavelet approach. This allows to efficiently estimate the Hurst exponent based on fast and easy to compute A and T, given that the process type: fBm, fGn or DfGn, is correctly classified beforehand. Finally, it is suggested that the A(H) relation for fGn and DfGn might be an exact (shifted) 3 / 2 power-law.

  19. Recognizing Ventricular Tachycardia and Fibrillation with Hurst Index%以Hurst指标识别室性心动过速与心室纤颤

    Institute of Scientific and Technical Information of China (English)

    赵晴; 赵捷

    2008-01-01

    Objective To recognize normal sinus rhythm (NSR), ventricular tachycardia (VT) and ventricular fibrillation (VF) from each other accurately and promptly. Methods A nonlinear descriptor based on multi-scale analysis, Hurst index, as a feature to quantify the nonlinear dynamics behavior of the ECG signal, was quoted in this paper. Results The nonlinear technique, Hurst index was examined and evaluated with ECG signals extracted from MIT-BIH Arrhythmia Database, MIT-BIH Malignant Ventricular Ectopy Database, and CU Ventricular Tachyarrhythmia Database under a specific moving-window length. The experiment showed good performance of this nonlinear descriptor. When the window length was 5 s long, the recognition accuracy for each of NSR, VT and VF was 100%. Besides, the computing speed was much faster than the speed obtained with a traditional non-linear technique, the complexity measure algorithm. Conclusion The Hurst index has a strong potential for life-threatening ventricular arrhythmia recognition in clinical applications.%目的 为了准确、快速地识别出窦性心律(NSR)、室性心动过速(VT)与心室纤颤(VF).方法 本文引入基于多尺度分析的非线性算法--Hurst index,来量化ECG信号的非线性动力学特征.结果 从MIT-BIH Arrhythmia Database、 MIT-BIH Malignant Ventricular Ectopy Database与 CU Ventricular Tachyarrhythmia Database典型数据库中引用数据,并对该算法进行验证与评价,结果表明:当滑动窗长度是5 s时,NSR、VT与VF被完全正确地检出;另外,该算法的运算速率远高于经典的非线性算法--复杂度算法.结论 在临床应用中,用Hurst指标识别室性心律失常具有极大的潜力.

  20. Visual information and expert’s idea in Hurst index estimation of the fractional Brownian motion using a diffusion type approximation

    Science.gov (United States)

    Taheriyoun, Ali R.; Moghimbeygi, Meisam

    2017-02-01

    An approximation of the fractional Brownian motion based on the Ornstein-Uhlenbeck process is used to obtain an asymptotic likelihood function. Two estimators of the Hurst index are then presented in the likelihood approach. The first estimator is produced according to the observed values of the sample path; while the second one employs the likelihood function of the incremental process. We also employ visual roughness of realization to restrict the parameter space and to obtain prior information in Bayesian approach. The methods are then compared with three contemporary estimators and an experimental data set is studied.

  1. Dynamics of stochastic non-Newtonian fluids driven by fractional Brownian motion with Hurst parameter $H \\in (1/4,1/2)$

    CERN Document Server

    Li, Jin

    2011-01-01

    In this paper we consider the Stochastic isothermal, nonlinear, incompressible bipolar viscous fluids driven by a genuine cylindrical fractional Bronwnian motion with Hurst parameter $H \\in (1/4,1/2)$ under Dirichlet boundary condition on 2D square domain. First we prove the existence and regularity of the stochastic convolution corresponding to the stochastic non-Newtonian fluids. Then we obtain the existence and uniqueness results for the stochastic non-Newtonian fluids. Under certain condition, the random dynamical system generated by non-Newtonian fluids has a random attractor.

  2. “Sık” Sözcüğünün Kökeni Üzerine On The Root Word Of ‘Sık’

    Directory of Open Access Journals (Sweden)

    Serkan ŞEN

    2012-12-01

    Full Text Available In this article, one the most used modifier in Turkish sık “dense ( opposite of wide apart” will be discussed. The word firstly appear in Mukaddimetü‟l-Edep, which is a Khorezmian Turkish text in the history of the Turkish Language. İt is also remarkable the word included in Divanü Lûgat-it-Türk by stressing that it is from Oghuz Dialect and means “little”. At first glance, by considering Turkish way of articulation, it is possible to say that the word sık derived from sı- by adding this verb -k affix. It has not been ascertained that the verb sı- has a meaning that enable to lexicalize „sık‟. In a study we have conducted on a unpublished manuscript from Uyghur Turkish period,the verb sı- means gather, come together. At first we ascertained theplace of „sık‟ in the development and range in Turkish in our article aimshow this finding, which can illuminate other words derived from „sı-‟ tothe authorities. After different views were given the views werecriticized. We focused the „sı-‟ verb which is in Berlin Turfan collectionnumbered Mainz 752 (T III 84-74 which means to „gather‟ then weshow the word context in old Turkish. FormDaśakarmapathāvādanamālā genre in Buddhist translation corpus atfirst „sık‟ means to pressure, it can be derived from „sı‟ means to gatherdiscussed comparatively. Bu makalede Türkçenin yaygın niteleyicilerinden biri olan sık “seyrek karşıtı; kesif, yoğun” sözcüğü üzerinde durulacaktır. Sözcük, belirtilen anlamıyla Türk dili tarihi içinde ilk kez Harezm Türkçesi metinlerinden Mukaddimetü‟l-Edep‟te karşımıza çıkar. Divanü Lûgat-it-Türk‟te sık‟a Oğuzca olduğu belirtilerek “az” anlamının verilmiş olması dikkate değer bir durumdur. İlk bakışta, Türkçenin eklemlenme yapısını göz önünde tutarak, sözcüğün sı- fiiline getirilen –k ekiyle türetildiğini düşünmek mümkündür. Ancak sı- fiilinin sık sözc

  3. Roughness Analysis On Micro-faults In Chelung-pu Fault, Taiwan: Change In Power Spectrum Density And Hurst Exponent With Seismic Cycles

    Science.gov (United States)

    Hashimoto, Y.; Shimizu, C.; Kishi, S.; Chao, Y. E.; Wan-Chung, L.

    2016-12-01

    Changes in stress state with seismic cycles are significant to understand the magnitude and nature of earthquakes. 1999 Chi-Chi earthquake occurred along the Chelung-pu fault, Taiwan. Structural data was obtained from core samples from Taiwan Chelung-pu fault Drilling Project (TCDP). Paleo-stress analysis revealed that the paleo-stress changes between horizontal compression and horizontal extension, which possibly corresponds to stress change before and after earthquake (Hashimoto et al., 2015). The microfault inversion analysis provided an opportunity to classify the micro-faults corresponding to the stress state before and after earthquake. In this study, we have analyzed roughness of micro-faults using power spectrum density and Hurst exponent to understand the roughness change with seismic cycles. Micro-faults were classified into two groups related to stress state before and after earthquake using misfit angle. Misfit angle is the angle between calculated slip direction and observed slip direction for each estimated stress state. Microfaults were sampled from TCDP core. 12 of each samples for horizontal compression and horizontal extension stress state were analyzed. 3D surface data of the slip surface of microfaults were obtained by 3D macro scope (Keyence, VR-3200). Three lines in a surface were analyzed to get power spectrum density-wave number relationships. Hurst exponent is a parameter related to a slope of a log-linear decreasing line in power spectrum density-wave number relationship. Power spectrum density before earthquake is smaller than that after earthquake. Hurst exponent is constant around 0.73-0.75 both in the stress states before and after earthquake. The differences between the directions parallel or vertical to the slip direction were not observed. These results suggest that amplitude decreases with slip at the time of horizontal compression (stress state before earthquake) at to keep the slope in power spectrum density-wave number

  4. Improvement of Instruction in Critical Foreign Languages: A Report on the 1987 Languages for Communication Workshops at Tarrant County Junior College Northeast Campus (Hurst, Texas, July 13-August 6, 1987).

    Science.gov (United States)

    Harper, Jane; And Others

    Since 1985, Tarrant County Junior College, Northeast Campus, in Hurst, Texas has offered workshops and classes for secondary school teachers of foreign languages. The series of 10 16-hour workshops held during summer 1987 were intended primarily as in-service training for secondary school foreign language teachers and secondarily as a retraining…

  5. Analysis of the flickering in the visual light curve of the declining old nova RW UMi (1956) with wavelets and Hurst analysis

    Science.gov (United States)

    Saygac, A. Talat; Balman, Solen; Esenoglu, Hasan H.; Gulsecen, Hulusi; Alis, Sinan; Bianchini, Antonio; Tamburini, Fabrizio

    2016-07-01

    We characterize the flickering observed in the optical light curve of the old nova RW UMi (1956) by determining its position in the α-Σ diagram of Fritz and Bruch (1998) classification scheme. The strength of flickering on a given timescale is represented by Σ, while α is the energy distribution of the flickering at different timescales. Here α is derived independently with both the wavelets and the Hurst R/S analysis. The flickering shows self-similarity on a timescale ranging from tens of minutes down to few minutes and, in the future, we plan to check whether stochastic persistent memory can be seen also down to time scales of seconds. In the α-Σ diagram, RW UMi occupies the region of magnetic systems. Since the old nova shows QPOs we conclude that this method can be used to characterize CV subtypes especially when their classification is uncertain.

  6. Semilinear Backward Doubly Stochastic Differential Equations and SPDEs Driven by Fractional Brownian Motion with Hurst Parameter in (0,1/2)

    CERN Document Server

    Jing, Shuai

    2010-01-01

    We study the existence of a unique solution to semilinear fractional backward doubly stochastic differential equation driven by a Brownian motion and a fractional Brownian motion with Hurst parameter less than 1/2. Here the stochastic integral with respect to the fractional Brownian motion is the extended divergence operator and the one with respect to Brownian motion is It\\^o's backward integral. For this we use the technique developed by R.Buckdahn to analyze stochastic differential equations on the Wiener space, which is based on the Girsanov theorem and the Malliavin calculus, and we reduce the backward doubly stochastic differential equation to a backward stochastic differential equation driven by the Brownian motion. We also prove that the solution of semilinear fractional backward doubly stochastic differential equation defines the unique stochastic viscosity solution of a semilinear stochastic partial differential equation driven by a fractional Brownian motion.

  7. Streamflow trend analysis by considering autocorrelation structure, long-term persistence, and Hurst coefficient in a semi-arid region of Iran

    Science.gov (United States)

    Zamani, Reza; Mirabbasi, Rasoul; Abdollahi, Sajjad; Jhajharia, Deepak

    2017-07-01

    Due to the substantial decrease of water resources as well as the increase in demand and climate change phenomenon, analyzing the trend of hydrological parameters is of paramount importance. In the present study, investigations were carried out to identify the trends in streamflow at 20 hydrometric stations and 11 rainfall gauging stations located in Karkheh River Basin (KRB), Iran, in monthly, seasonal, and annual time scales during the last 38 years from 1974 to 2011. This study has been conducted using two versions of Mann-Kendall tests, including (i) Mann-Kendall test by considering all the significant autocorrelation structure (MK3) and (ii) Mann-Kendall test by considering LTP and Hurst coefficient (MK4). The results indicate that the KRB streamflow trend (using both test versions) has decreased in all three time scales. There is a significant decreasing trend in 78 and 73 % of the monthly cases using the MK3 and MK4 tests, respectively, while these percentages changed to 80 and 70 % on seasonal and annual time scales, respectively. Investigation of the trend line slope using Theil-Sen's estimator showed a negative trend in all three time scales. The use of MK4 test instead of the MK3 test has caused a decrease in the significance level of Mann-Kendall Z-statistic values. The results of the precipitation trends indicate both increasing and decreasing trends. Also, the correlation between the area average streamflow and precipitation shows a strong correlation in annual time scale in the KRB.

  8. On the correlation between the Hurst exponent, the ratio of the mean square successive difference to the variance, and the number of turning points

    CERN Document Server

    Tarnopolski, Mariusz

    2015-01-01

    The long range dependence of the fractional Brownian motion (fBm), fractional Gaussian noise (fGn), and differentiated fGn (DfGn) is described by the Hurst exponent $H$ (HE). Considering these three processes in terms of time series, they might be described by their statistical features, such as half of the ratio of the mean square successive difference to the variance, $\\mathcal{A}$, and the number of turning points, $T$. This paper investigates the correlations between $\\mathcal{A}$ and $T$ on $H$. It is found that the formulas $\\mathcal{A}=a{\\rm e}^{bH}$ in case of fBm, and $\\mathcal{A}=a+bH^c$ for fGn and DfGn, describe the $\\mathcal{A}(H)$ relationship. When $T(H)$ is considered, no simple formula is found, and it is empirically found that among polynomials, the fourth and second order description applies. When plotted in the space of $(\\mathcal{A},T)$, the three process types form separated branches. Hence, it is examined whether $\\mathcal{A}$ and $T$ may serve as HE indicators. Some real world data are...

  9. El coeficiente de Hurst y el parámetro a-estable para el análisis de series financieras. Aplicación al mercado cambiario mexicano

    Directory of Open Access Journals (Sweden)

    Román Rodríguez Aguilar

    2014-01-01

    Full Text Available Este trabajo aborda la utilidad de estimar, previo a cualquier análisis, el parámetro de la distribución -estable y el coe - ficiente de Hurst para una serie financiera en periodos de alta volatilidad. Mediante la estimación del coeficiente de Hurst y el parámetro se busca explorar la violación de dos grandes supuestos en la modelación de series financieras: suponer que las series presentan una distribución normal y que los rendi - mientos sucesivos son independientes; asimismo, se analiza el caso del tipo de cambio Fix peso-dólar en México en el perio - do 1992-2011. Uno de los principales resultados es la identi - ficación de características fractales y colas pesadas en la serie para algunos periodos en magnitudes diferenciadas; dichas diferencias se acentúan en periodos de crisis. Caracterizar la serie mediante estos parámetros a través de un índice permitirá mejorar la toma de decisiones sobre el tipo de análisis que es metodológicamente correcto aplicar en una ventana de tiempo específica, ya sea para valuación de activos o para la gestión de riesgos.

  10. Türkçe Öğretmeni Adaylarının Farklı Türlerdeki Cümlelerde Vurgulu Sözcükleri Belirleyebilme Becerilerine Yönelik Bir Araştırma Investigation On Skills Of Turkish Teacher Candidates For Determination Of Stressed Words In Different Types Of Sentences

    Directory of Open Access Journals (Sweden)

    Burak TÜFEKÇİOĞLU

    2013-07-01

    Full Text Available In relation to comprehensible and fluent speaking skills, the professional qualifications, which Turkish teacher candidates need to improve, also include emphatic speaking/reading. In professional sense, particularly Turkish teacher candidates engaged in improving speaking/reading skills of primary school second stage students are required to be aware of their above-mentioned primary duty. Therefore, the subject of our investigation comprises the skills of Turkish teacher candidates for determining the words need to be stressed in different types of sentences. This investigation was conducted on 30 teacher candidates studying in Turkish Language Department, Teacher Training Faculty of Mersin University. As a result of this investigation, it has been demonstrated that the participants do not predominantly stress the words, theoretically deemed as stressed words, in Turkish language, and focus stress on semantically related last phrase in elliptical sentence, and further focus stress mostly on prepositions, conjunctions and exclamations in the sentences, and that the ratios of the participants who are able to determine stressed words in loud readings are ranked low, and that in the cases that the words theoretically required to be stressed are proper names, the ratios of the listeners who are able to determine stressed words both in sentences and in loud readings increase. Anlaşılır ve akıcı konuşma becerisine bağlı olarak vurgulu konuşma/okuma Türkçe öğretmeni adaylarının kazanması gereken mesleki nitelikleri arasındadır. Bu nedenle araştırma konumuzu, Türkçe öğretmeni adaylarının farklı türlerdeki cümlelerde vurgulu söylenmesi gereken sözcükleri belirleyebilme becerileri oluşturmaktadır. Araştırma, 2010 – 2011 eğitim-öğretim yılında Mersin Üniversitesi Eğitim Fakültesi Türkçe Eğitimi Bölümünde okuyan 31 öğretmen adayı üzerinde gerçekleştirilmiştir. Katılımcıların Türkiye T

  11. From Constructive Field Theory to Fractional Stochastic Calculus. (II) Constructive Proof of Convergence for the Lévy Area of Fractional Brownian Motion with Hurst Index ${{alpha} {in} ((1)/(8),(1)/(4))}$

    Science.gov (United States)

    Magnen, Jacques; Unterberger, Jérémie

    2012-03-01

    {Let $B=(B_1(t),...,B_d(t))$ be a $d$-dimensional fractional Brownian motion with Hurst index $\\alphacalculus with respect to $B$, or to solving differential equations driven by $B$. We intend to show in a series of papers how to desingularize iterated integrals by a weak, singular non-Gaussian perturbation of the Gaussian measure defined by a limit in law procedure. Convergence is proved by using "standard" tools of constructive field theory, in particular cluster expansions and renormalization. These powerful tools allow optimal estimates, and call for an extension of Gaussian tools such as for instance the Malliavin calculus. After a first introductory paper \\cite{MagUnt1}, this one concentrates on the details of the constructive proof of convergence for second-order iterated integrals, also known as L\\'evy area.

  12. Türkçe Öğretmeni Adaylarının Yabancı Kökenli Sözcük Kullanımlarına İlişkin Bir İnceleme A Research on the Use of Foreign Origin Words by Turkish Language Teacher Candidates

    Directory of Open Access Journals (Sweden)

    Esra LÜLE MERT

    2012-12-01

    tothe 46 words of these. Amacı Türkçe öğretmeni adaylarının yazılı anlatımlarında kullandıkları sözcükleri Türkçe ya da yabancı kökenli olmaları bağlamında değerlendirmek olan çalışmanın problem tümcesi “Türkçe öğretmenliği son sınıf öğrencilerinin sözcük kullanımında Türkçe kökenli olanları seçme / seçmeme oranları nedir?” olarak belirlenmiştir. Bu araştırma, üretilmiş bir yapı üzerinde tarama modelinde betimsel bir araştırmadır. Var olan bir durumu, var olduğu hâliyle betimlemeyi amaçlayan bu yaklaşımda, incelenecek sınav kâğıtlarının dilsel bütünlüğü içinde yer alan yabancı kökenli (doğu-batı sözcükler ile Türkçe kökenli sözcükle ele alınmıştır. Tarama modeline dayalı bu çalışmanın veri kaynağı, 2011-2012 eğitim-öğretim yılında İnönü Üniversitesi Eğitim Fakültesi Türkçe Öğretmenliği Programının 4. sınıfında öğrenim gören 1. öğretimden 25 ve 2. öğretimden 25 olmak üzere toplam 50 öğretmen adayının “Tiyatro ve Drama Uygulamaları” dersinin dönem sonu sınav sorularına verdikleri yazılı yanıtlardır. Kâğıtlarda toplam 4 açık uçlu soru yer almaktadır. 50 öğrencinin 4 soruya verdikleri yanıtlar incelenmiştir. Çalışmada, kaynak olarak “TDK Türkçe Sözlük” (TDK 2005 temel alınmıştır. Kâğıtlar, “içerik çözümlemesi” yöntemiyle incelenmiştir. İncelenen 50 sınav kâğıdında 13.130 sözcük belirlenmiştir. Bu sözcüklerin 4000’i terim olarak nitelendirilmiştir. 9130 sözcük Türk Dil Kurumunun (2005 Türkçe Sözlüğüne bağlı kalınarak yabancı kökenli, Türkçe kökenli başlıklarında sınıflandırılmıştır. Bu bağlamda Türkçe öğretmeni adaylarının yazılı anlatımda kullandıkları sözcüklerin % 12’si yabancı kökenli sözcüklerden oluşmuştur. Belirlenen yabancı kökenli sözcüklerin 157’sinin Türkçe karşılığı Türk Dil Kurumunun (2005 Türkçe S

  13. Türkiye Türkçesindeki Alıntı Sözcüklerde Görülen Ses Olayları Üzerine Bir İnceleme An Analysis On Phonetic Occurrences Which Of Loaned Words In Turkey Turkish

    Directory of Open Access Journals (Sweden)

    Veysel İbrahim KARACA

    2012-12-01

    Full Text Available A society can not live without making contact with other communities. Every community must interact with each other except the non-primitive societies which have been isolated from the world. It is inevitable for languages of communities that have cultural,commercial and social connection not to effect one another.This interaction, taken place from upper culture to sub-culture,producer to consumer, provides the exchange of words through theloaned words. These loaned words as outcomes of communication andmodernity, exist more or less in every languages.Turkish is a language have an interaction with various languagesthrough its history. As in every language, socially, economically,diplomatically and culturally had an interaction, in Turksih also, thereare loaned words from the first written texts to today.In this study, we undertake phonetic occurrences of loaned wordsin Turkish. This study is an synchronic work, based on 10th edition ofTürkçe Sözlük (Türkish Dictionary published by Türk Dil Kurumu (TheInstitution of Turkish Language. The total loaned words which arebelonged to east languages (Arabic, Chines, Ermenian, Iranian,Georgian, Indian, Hebrew, Japanese, Malaysian, Mongolian, Russian,Sudgish, Tibetan and compose the scope of the study, is 8.991. Thedetermination of source of the loaned words are done based on theinformation in Türkçe Sözlük. Our study, limited geographically oneastern languages, is an analyze on %58.63 of total loaned words. Bir toplumun diğer toplumlarla herhangi bir ilişki kurmadan yaşaması mümkün değildir. Dünyadan izole olmuş ilkel toplumlar dışındaki her toplum birbiriyle etkileşimde bulunmak zorundadır. Siyasi, ticari, kültürel ve sosyal ilişkilerle birbirini tanıyan toplumların dillerinin de belli bir ölçüde birbirini etkilemesi kaçınılmazdır.Üst kültürden alt kültüre, üretenden tüketene doğru bir yol izleyen bu etkileşim alıntı sözcükler yoluyla sözcük alış veri

  14. Resim Arama Motorlarının Sorgu Sözcük Sayısına Göre Performans Değerlendirmeleri / Performance Evaluation of Image Search Engines Based on the Number of Query Words

    Directory of Open Access Journals (Sweden)

    Erkan Emirzade

    2008-04-01

    Full Text Available [Turkish abstract]Bu çalışmada, sorgu sözcük sayısının bilgi erişim etkinliği açısından resim arama motorları üzerindeki etkisi araştırılmıştır. Öncelikle, üç popüler resim arama motoru (Google, Yahoo ve MSN seçilmiş ve Wordtracker’ın yayımlamış olduğu en sık aranan sorgular listesinden alınan 40 sorgu bir, iki, üç ve dört sözcüklü sorgu grupları şeklinde sınıflandırılmıştır. Seçilen sorgu sözcükleri resim arama motorlarında ayrı ayrı çalıştırılmış ve erişim çıktıları üzerinde ilgililik değerlendirmeleri yapılmıştır. Daha sonra arama motorlarının iki farklı kesme noktası (ilk 10 ve ilk 20 üzerinden farklı sorgu sözcük sayılarına göre erişim performansları duyarlılık ve normalize sıralama ölçütleri kullanılarak değerlendirilmiş ve genelde sorgu sözcük sayısı arttıkça resim arama motorlarının bilgi erişim etkinliklerinde düşüş gözlenmiştir. Resim arama motorlarının geliştirilmesine ihtiyaç vardır. [English abstract]In this article, the impact of the number of query words on information retrieval effectiveness of image search engines was investigated. First of all, three popular search engines, namely, Google, Yahoo and MSN, were selected. Then, 40 queries were extracted from the list of Wordtracker and categorized in four groups as one-, two-, three- and four-word queries. After every query was run on the selected image search engines and binary human relevance judgments were done, the performance evaluation of image search engines was carried out on two cut-off points (first 10 and first 20 retrievals in terms of precision and normalized recall. In general, the information retrieval effectiveness of image search engines decreases as the number of query words increases. Retrieval performance of image search engines needs to be improved.

  15. Hurst exponents for short time series

    Science.gov (United States)

    Qi, Jingchao; Yang, Huijie

    2011-12-01

    A concept called balanced estimator of diffusion entropy is proposed to detect quantitatively scalings in short time series. The effectiveness is verified by detecting successfully scaling properties for a large number of artificial fractional Brownian motions. Calculations show that this method can give reliable scalings for short time series with length ˜102. It is also used to detect scalings in the Shanghai Stock Index, five stock catalogs, and a total of 134 stocks collected from the Shanghai Stock Exchange Market. The scaling exponent for each catalog is significantly larger compared with that for the stocks included in the catalog. Selecting a window with size 650, the evolution of scaling for the Shanghai Stock Index is obtained by the window's sliding along the series. Global patterns in the evolutionary process are captured from the smoothed evolutionary curve. By comparing the patterns with the important event list in the history of the considered stock market, the evolution of scaling is matched with the stock index series. We can find that the important events fit very well with global transitions of the scaling behaviors.

  16. Türk Dili Edebiyatı ve Türkçe Öğretmeni Adaylarının Sözcük Dağarcıklarının Değerlendirilmesi ve Günlük Yaşamlarına Yansımaları Evaluation of Turkish Literature and Turkish Language Teaching Majors’ Vocabulary Knowledge and Its Effect on Their Daily Life

    Directory of Open Access Journals (Sweden)

    Fatma SUSAR KIRMIZI

    2012-12-01

    Full Text Available Vocabulary knowledge includes all the words one acquires duringhis or her lifetime. In terms of first language education, the active wordsused improve vocabulary knowledge. One has the ability to expresshim/herself as much as his or her vocabulary allows. The aim of thisstudy is to evaluate university students‟ vocabulary knowledge and todetermine how their vocabulary knowledge affects their daily life. In thisstudy, qualitative and quantitative research methods were usedtogether. The study was conducted with 3rd and 4th year students(n=204 at the Turkish Language and Literature Department of theFaculty of Science and Literature and the Turkish Language TeachingDepartment of the Faculty of Education, Pamukkale University, Denizli.To measure the students‟ vocabulary knowledge on Republican periodliterature, five texts of the period were used. For identifying the sample,convenient sampling was employed in the study. Firstly, a vocabularypool was created including the words in the texts and the ones that thestudents should know, then it was tried to determine to what extentthey know these words. In addition to this, to identify the effect ofstudents‟ vocabulary knowledge on their daily life, “semi-structuredinterview form” was used. The written forms including the students‟opinions were evaluated in the study as the qualitative data set. In thestudy, three most frequent unknown words are „şekva‟ (complaint,„müstevlî‟ (occupant, and „müsavat‟ (equality. The students at theFaculty of Education think that vocabulary knowledge is, in general,necessary for having a respectable social status. The students use thenew words they have learnt in poetry, prose, exams or a different type ofwriting, or even writing online. Sözcük dağarcığı yaşam boyunca edinilen kelimelerin tümüdür. Ana dili eğitimi açısından önemli olan öğrenende, kullanılan aktif sözcük dağarcığı geliştirmektir. Kişi kullandığı sözc

  17. The Propulsive Strategy and Practice of Maker Space Based Maker Education:A Case Study on the Implementation of K12 Maker Education in ZC Space%基于“创客空间”的创客教育推进策略与实践*--以“智创空间”开展中小学创客教育为例

    Institute of Scientific and Technical Information of China (English)

    王同聚

    2016-01-01

    在互联网+时代背景下,创客运动席卷全球,各种创客空间如雨后春笋,创客教育也逐渐步入中小学校。在创客教育的推进过程中,需要依托创客空间、创客文化、创客教师、创客课程、创客学习、创客资源和创客环境等进行相互融合与协同发展。该文基于“智创空间”开展创客教育实践,提出了以智能机器人设计制作、3D打印技术应用和Scratch与机器人融合的创客教育“三剑客”,构建了“ZC Space创客教育模型”,引入了“微课导学”教学模式,探索了中小学创客教育的推进策略,通过面向教师开展创客教育继续教育课程、面向学生开展创客教育体验活动课程和面向家长开展创客教育亲子活动课程等方式,让创客们通过玩中做、做中学、学中做、做中创,践行“实践、创新、协作和分享”的创客精神,依托“智创空间”,集众人智、汇创客流、搭分享台、结创新果,为中小学创客教育和STEAM教育开启创新之门。%In the current “Internet Plus” era, “Maker” have become an internet hot word. With the tide of Maker Movement sweeping the globe, the Maker Spaces gradually built all over the world, as well as the development of Maker Education in K12. The advancing process of Maker Education needs mutual mergence and coordination between Maker Spaces, Maker Culture, Maker Teacher, Maker Course, Maker Learning, Maker Resources, Maker Environment, etc. Based on the practical experience of Maker Education in ZC Space, this paper presented the “Three Musketeers” of Maker Education that included intelligence robot making, application of 3D printing technology and the convergence between Scratch and robot, structuring the “ZC Space's Maker Education Model”, introducing the “Micro-lecture-Guided Learning” Instructional Mode and exploring the propulsive strategy of Maker Education in K12. Through

  18. Study of the $Z_c^+$ channel using lattice QCD

    Energy Technology Data Exchange (ETDEWEB)

    Prelovsek, Sasa [Stefan Inst., Ljubljana; Lang, C. B. [Graz U.; Leskovec, Luka [Stefan Inst., Ljubljana; Mohler, Daniel [Fermilab

    2015-01-15

    Recently experimentalists have discovered several charged charmoniumlike hadrons Zc+ with unconventional quark content c¯cd¯u. We perform a search for Zc+ with mass below 4.2 GeV in the channel IG(JPC)=1+(1+-) using lattice QCD. The major challenge is presented by the two-meson states J/ψπ, ψ2Sπ, ψ1Dπ, DD¯*, D*D¯*, ηcρ t

  19. Grupos Nil de Bass de Z[C p2 ] y para Z[C p × C p].

    OpenAIRE

    2012-01-01

    Buscar dar una definición inmediata, clara y precisa de lo que es K-teoría sería pretencioso y por demás limitante para una teoría que ha permeado muchas y variadas ramas de la matemáticas, por mencionar algunas: topología, geometría algebraica y teoría de números. La K-teoría algebraica, rústicamente dicho, asocia a cada anillo R grupos abelianos Ki (R), i ∈ Z, vamos que la K-teoría “luce”, para fijar ideas, como una teoría de homología de anillos . Nosotros abarcaremos solamente...

  20. Obituary: Ernest Hurst Cherrington, Jr., 1909-1996

    Science.gov (United States)

    Osterbrock, Donald E.

    2003-12-01

    Ernest H. Cherrington, Jr., a long-time member of the AAS, died in San Jose, California on 13 July 1996, following a long illness. He had a short but active career as a research astronomer at Perkins Observatory at Ohio Wesleyan University in Delaware, Ohio before World War II, in which he served as an officer in the Army Air Force. After the war ended he turned to full-time teaching and administration at the University of Akron, and then at Hood College in Frederick, Maryland. Ernest was born on 10 September 1909 in Westerville, Ohio, where his father, Ernest H. Cherrington, Sr., was a leader in the temperance movement and publisher of "American Issue", a Prohibitionist magazine. Ernest Jr.'s mother, Betty Clifford (née Denny) Cherrington, was a homemaker. He was an outstanding student in high school and at Ohio Wesleyan University, which he entered in 1927. The little university's Perkins Observatory with its 69-inch reflector, briefly the second largest telescope in the United States, had just been built and gone into operation. After graduating with a BA magna cum laude in astronomy in 1931, Ernest stayed on one more year and earned his MS with a thesis on the motion of material in the tail of Comet Morehouse, supervised by Nicholas T. Bobrovnikoff. In 1932 Ernest entered the University of California at Berkeley as a graduate student, with a one-year teaching assistantship in the Astronomical Department. This was followed by a two-year Lick Observatory Fellowship. In June 1933 he married Ann McAfee Naylor, who had been a classmate at Delaware High School and Ohio Wesleyan. Ernest did his PhD thesis on spectrophotometry of the Mg I b lines in the solar spectrum, using a high-resolution grating spectrograph on the Berkeley campus, designed by C. Donald Shane, his adviser. In this thesis, Ernest tested and improved the then current theory of strong absorption lines in stellar atmospheres. He also spent several short periods at Lick Observatory on Mount Hamilton, working in stellar spectroscopy with Joseph H. Moore. After earning his PhD in 1935, Ernest taught mathematics and astronomy for one year at Syracuse University, and then in 1936 returned to Ohio Wesleyan as an assistant astronomer and instructor in physics and astronomy. In 1940 he was promoted to assistant professor. He did good spectroscopic research on Be stars, especially a long study of the variations in the spectrum of γ Cas, an unusually active star of this class which he followed as it threw off several shells. It was a program well suited to the telescope, spectrograph, and site available to him. Ernest attended several meetings of the AAS, reported on his research in oral papers, and published them. However after America entered World War II he went into the Army Air Force in 1942, serving as a Captain in the Air Force Training Command. He had an important job directing ground training of officers, cadets, and enlisted men at various fields in California and New Mexico. After the war, although he could have returned to Perkins Observatory, he realized that the future was not hopeful for astronomical research there, and decided to switch to academic administration. He was at Centenary College, Louisiana for two years, 1946--48, and then went to the University of Akron as professor of astronomy and dean of the College of Liberal Arts from 1948 to 1960, then of its Graduate Division from 1960 to 1967. He loved teaching astronomy and continued to do so while holding these deanships. Ernest was a good writer, and he published several articles on astronomy and science in the "New York Times Sunday Magazine" and other mass-circulation magazines in those years. Ernest retired at Akron in 1967 but moved to Hood College in Frederick, Maryland, as professor of astronomy, a full-time teaching position with no administrative duties. Soon after arriving there he published "Exploring the Moon with Binoculars", a very popular book in the early days of the NASA program of lunar photography from unmanned space vehicles. All the ground-based photographs in his book came from Lick Observatory, most of them taken by Moore and Fred Chappell, with whom he had worked. About 1979 he retired from Hood College and he and his wife moved to San Jose, near the home of their surviving son, Robert N. Cherrington. Ernest was always a good family man, devoted to his wife and children. I met Ernest at his home in San Jose and interviewed him several times in preparation for the Lick centennial in 1988; he had warm memories of Lick and the Berkeley Astronomical Department. In 1984 he had updated his book to "Exploring the Moon through Binoculars and Small Telescopes", with additional photographs from lunar orbiting vehicles and one taken by Neil Armstrong of Buzz Aldrin on the moon's surface. Ernest's wife Ann died in 1988 and he followed her eight years later. There are about one hundred letters to, from, or about Ernest, written in the years 1931 to 1948, in the Mary Lea Shane Archives of the Lick Observatory, McHenry Library, University of California. These letters, his published papers and book, and Perkins Observatory annual reports, together with information provided by Robert N. Cherrington and my own notes and memories of conversations with Ernest and Ann formed the basis of this obituary article.

  1. The effect of the underlying distribution in Hurst exponent estimation.

    Directory of Open Access Journals (Sweden)

    Miguel Ángel Sánchez

    Full Text Available In this paper, a heavy-tailed distribution approach is considered in order to explore the behavior of actual financial time series. We show that this kind of distribution allows to properly fit the empirical distribution of the stocks from S&P500 index. In addition to that, we explain in detail why the underlying distribution of the random process under study should be taken into account before using its self-similarity exponent as a reliable tool to state whether that financial series displays long-range dependence or not. Finally, we show that, under this model, no stocks from S&P500 index show persistent memory, whereas some of them do present anti-persistent memory and most of them present no memory at all.

  2. Observation of a Charged Charmoniumlike Structure Z(c) and Search for the Z(c) in e(+)e(-) -> pi(+) pi(-)h(c)

    NARCIS (Netherlands)

    Ablikim, M.; Achasov, M. N.; Albayrak, O.; Ambrose, D. J.; An, F. F.; An, Q.; Bai, J. Z.; Ferroli, R. Baldini; Ban, Y.; Becker, J.; Bennett, J. V.; Bertani, M.; Bian, J. M.; Boger, E.; Bondarenko, O.; Boyko, I.; Braun, S.; Briere, R. A.; Bytev, V.; Cai, H.; Cai, X.; Cakir, O.; Calcaterra, A.; Cao, G. F.; Cetin, S. A.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, S. J.; Chen, X. R.; Chen, Y. B.; Cheng, H. P.; Chu, X. K.; Chu, Y. P.; Cronin-Hennessy, D.; Dai, H. L.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; Ding, W. M.; Ding, Y.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Fang, J.; Fang, S. S.; Fava, L.; Feng, C. Q.; Friedel, P.; Fu, C. D.; Fu, J. L.; Fuks, O.; Geng, C.; Goetzen, K.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A. Q.; Guo, L. B.; Guo, T.; Guo, Y. P.; Han, Y. L.; Harris, F. A.; He, K. L.; He, M.; He, Z. Y.; Held, T.; Heng, Y. K.; Hou, Z. L.; Hu, C.; Hu, H. M.; Hu, J. F.; Hu, T.; Huang, G. M.; Huang, G. S.; Huang, J. S.; Huang, L.; Huang, X. T.; Huang, Y.; Hussain, T.; Ji, C. S.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Jiang, L. L.; Jiang, X. S.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Jing, F. F.; Kalantar-Nayestanaki, N.; Kavatsyuk, M.; Kloss, B.; Kopf, B.; Kornicer, M.; Kuehn, W.; Lai, W.; Lange, J. S.; Lara, M.; Larin, P.; Leyhe, M.; Li, C. H.; Li, Cheng; Li, Cui; Li, D. L.; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, K.; Li, Lei; Li, N.; Li, P. R.; Li, Q. J.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. N.; Li, X. Q.; Li, X. R.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Lin, D. X.; Liu, B. J.; Liu, C. L.; Liu, C. X.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. H.; Liu, H. M.; Liu, J. P.; Liu, K.; Liu, K. Y.; Liu, P. L.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lou, X. C.; Lu, G. R.; Lu, H. J.; Lu, J. G.; Lu, X. R.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lv, M.; Ma, F. C.; Ma, H. L.; Ma, Q. M.; Ma, S.; Ma, T.; Ma, X. Y.; Maas, F. E.; Maggiora, M.; Malik, Q. A.; Mao, Y. J.; Mao, Z. P.; Messchendorp, J. G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Moeini, H.; Morales, C. Morales; Moriya, K.; Muchnoi, N. Yu.; Muramatsu, H.; Nefedov, Y.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Park, J. W.; Pelizaeus, M.; Peng, H. P.; Peters, K.; Ping, J. L.; Ping, R. G.; Poling, R.; Prencipe, E.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, L. Q.; Qin, X. S.; Qin, Y.; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Redmer, C. F.; Ripka, M.; Rong, G.; Ruan, X. D.; Sarantsev, A.; Schumann, S.; Shan, W.; Shao, M.; Shen, C. P.; Shen, X. Y.; Sheng, H. Y.; Shepherd, M. R.; Song, W. M.; Song, X. Y.; Spataro, S.; Spruck, B.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, X.; Tapan, I.; Thorndike, E. H.; Toth, D.; Ullrich, M.; Uman, I.; Varner, G. S.; Wang, B.; Wang, D.; Wang, D. Y.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, Q. J.; Wang, S. G.; Wang, X. F.; Wang, X. L.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. H.; Wang, Z. Y.; Wei, D. H.; Wei, J. B.; Weidenkaff, P.; Wen, Q. G.; Wen, S. P.; Wiedner, U.; Wu, L. H.; Wu, N.; Wu, S. X.; Wu, W.; Wu, Z.; Xia, L. G.; Xia, Y. X.; Xiao, Z. J.; Xie, Y. G.; Xiu, Q. L.; Xu, G. F.; Xu, Q. J.; Xu, Q. N.; Xu, X. P.; Xu, Z. R.; Xue, Z.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, Y. H.; Yang, H. X.; Yang, Y.; Yang, Y. X.; Yang, Y. Z.; Ye, H.; Ye, M.; Ye, M. H.; Yu, B. X.; Yu, C. X.; Yu, H. W.; Yu, J. S.; Yu, S. P.; Yuan, C. Z.; Yuan, W. L.; Yuan, Y.; Zafar, A. A.; Zallo, A.; Zang, S. L.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C.; Zhang, C. B.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, LiLi; Zhang, S. H.; Zhang, X. J.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhang, Zhenghao; Zhao, G.; Zhao, J. W.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, S. J.; Zhao, T. C.; Zhao, X. H.; Zhao, Y. B.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, Y. H.; Zhong, B.; Zhou, L.; Zhou, X.; Zhou, X. K.; Zhou, X. R.; Zhu, K.; Zhu, K. J.; Zhu, X. L.; Zhu, Y. C.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zou, B. S.; Zou, J. H.; Werner, M.J.; Zheng, J.P.

    2013-01-01

    We study e(+)e(-) -> pi(+) pi(-)h(c) at center-of-mass energies from 3.90 to 4.42 GeV by using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections are measured at 13 energies and are found to be of the same order of magnitude a

  3. Research on spectrographic oil analysis of 12VE-230ZC diesel engine

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    With the spectrographic analysis, this paper analyzes the concentration of elements inoil, such as Fe, Cu, Cr, Al, Si etc. In order to monitor conditions and diagnose faults, the correlationcoefficient of main elements in oil has been used to study wear characteristics of friction pairs inrunning-in and working periods.

  4. AFSC/RACE/FBEP/Hurst: Resiliency of juvenile walleye pollock to projected levels of ocean acidification

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is from a study examining the growth responses of juvenile walleye pollock at ambient and 3 elevated CO2 levels.

  5. Investigating the Hurst-Kolmogorov behavior of Sicily's climatological time series

    Science.gov (United States)

    Giglioni, M.; Lombardo, F.; Mineo, C.

    2017-07-01

    There is evidence that many geophysical processesexhibit long-term persistence(LTP, also calledlong-range dependence). Overlooking this type of behaviorcan lead to wrong inferences and false claims about the properties of processes studied in the fields of hydrology, hydraulics, meteorology, and engineering. In this light, the present study investigates the statistical properties of precipitation and temperature datasets from Sicily (Italy),in order to analyzethe presence of LTP. The case study region(i.e., the largest island in the Mediterranean)is characterized by typical Mediterranean climate with mild winter and severe drought conditions in summer time. The latter have become one of the most challenging issuesall over the Mediterranean region due to the growth of population, contamination of water supplies, and expansion of agricultural, energy and industrial sectors. The severity and duration of the drought eventsare clearly influenced by the presence of LTP in precipitation and temperature processes. Improving understanding ofsuch phenomenonis therefore central to new research challenges related to the estimation and management of water resources.

  6. Inference on the hurst parameter and the variance of diffusions driven by fractional Brownian motion

    CERN Document Server

    Berzin, Corinne; León, José R

    2014-01-01

    This book is devoted to a number of stochastic models that display scale invariance. It primarily focuses on three issues: probabilistic properties, statistical estimation and simulation of the processes considered. It will be of interest to probability specialists, who will find here an uncomplicated presentation of statistics tools, and to those statisticians who wants to tackle the most recent theories in probability in order to develop Central Limit Theorems in this context; both groups will also benefit from the section on simulation. Algorithms are described in great detail, with a focus on procedures that is not usually found in mathematical treatises. The models studied are fractional Brownian motions and processes that derive from them through stochastic differential equations. Concerning the proofs of the limit theorems, the “Fourth Moment Theorem” is systematically used, as it produces rapid and helpful proofs that can serve as models for the future. Readers will also find elegant and new proof...

  7. ZC4H2, an XLID gene, is required for the generation of a specific subset of CNS interneurons

    NARCIS (Netherlands)

    M. May (Melanie); K.-S. Hwang (Kyu-Seok); J. Miles (Judith); C. Williams (Charlie); T. Niranjan (Tejasvi); S.G. Kahler (Stephen G.); P. Chiurazzi (Pietro); K. Steindl (Katharina); P.J. van der Spek (Peter); S.M.A. Swagemakers (Sigrid); J. Mueller (Jennifer); S. Stefl (Shannon); E. Alexov (Emil); J.-I. Ryu (Jeong-Im); J.-H. Choi (Jung-Hwa); H.-T. Kim (Hyun-Taek); P.S. Tarpey (Patrick); G. Neri (Giovanni); L. Holloway (Lynda); C. Skinner (Cindy); R.E. Stevenson (Roger E.); R.I. Dorsky (Richard I.); T. Wang (Tao); C.E. Schwartz; C.-H. Kim (Cheol-Hee)

    2015-01-01

    textabstractMiles-Carpenter syndrome (MCS) was described in 1991 as an XLID syndrome with fingertip arches and contractures and mapped to proximal Xq. Patients had microcephaly, short stature, mild spasticity, thoracic scoliosis, hyperextendable MCP joints, rocker-bottom feet, hyperextended elbows a

  8. ZC4H2, an XLID gene, is required for the generation of a specific subset of CNS interneurons

    NARCIS (Netherlands)

    M. May (Melanie); K.-S. Hwang (Kyu-Seok); J. Miles (Judith); C. Williams (Charlie); T. Niranjan (Tejasvi); S.G. Kahler (Stephen G.); P. Chiurazzi (Pietro); K. Steindl (Katharina); P.J. van der Spek (Peter); S.M.A. Swagemakers (Sigrid); J. Mueller (Jennifer); S. Stefl (Shannon); E. Alexov (Emil); J.-I. Ryu (Jeong-Im); J.-H. Choi (Jung-Hwa); H.-T. Kim (Hyun-Taek); P.S. Tarpey (Patrick); G. Neri (Giovanni); L. Holloway (Lynda); C. Skinner (Cindy); R.E. Stevenson (Roger E.); R.I. Dorsky (Richard I.); T. Wang (Tao); C.E. Schwartz; C.-H. Kim (Cheol-Hee)

    2015-01-01

    textabstractMiles-Carpenter syndrome (MCS) was described in 1991 as an XLID syndrome with fingertip arches and contractures and mapped to proximal Xq. Patients had microcephaly, short stature, mild spasticity, thoracic scoliosis, hyperextendable MCP joints, rocker-bottom feet, hyperextended elbows

  9. AFSC/RACE/FBEP/Hurst: Effects of ocean acidification on hatch size and larval growth of walleye pollock (Theragra chalcogramma)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is from laboratory experiments that examined the direct effects of projected levels of ocean acidification on the eggs and larvae of walleye pollock.

  10. AFSC/RACE/FBEP/Hurst: Contrasting coastal and shelf nursery habitats of Pacific cod in the southeastern Bering Sea

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is from a study examining the use of demersal and pelagic habitats in the southeast Bering Sea by age-0 Pacific cod, based on 4 years of demersal trawl...

  11. ¿Es el coeficiente de Hurst un buen indicador de extinción de especies?

    Directory of Open Access Journals (Sweden)

    Adela Salvador Alcaide

    2011-04-01

    Full Text Available La dimensión fractal de las fluctuaciones de los tamañospoblacionales se puede utilizar como un estimador del riesgo deextinción de una especie. El problema en la medición de esta dimensión fractal suele ser la longitud de la serie temporal, normalmente demasiado corta para que los resultados sean concluyentes. En este trabajo se ha analizado esta hipótesis con los datos obtenidos a partir de un modelo iterativo de competencia en diferentes regímenes de perturbación entre dos estrategias de germinación diferentes: germinación de todas las semillas vs. dormición de la mitad de las semillas. Esto permite disponerde series temporales largas, de mil años y de diferentes riesgos de extinción.

  12. AFSC/RACE/FBEP/Hurst: Effects of elevated CO2 levels on eggs and larvae of a North Pacific flatfish

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is from a laboratory study that examined the growth responses of northern rock sole eggs and larvae across a range of CO2 levels to evaluate the...

  13. Davidson Christopher (dir., Power and Politics in the Persian Gulf Monarchies, Londres, Hurst, 2011, 203 p.

    Directory of Open Access Journals (Sweden)

    Laurent Bonnefoy

    2012-06-01

    Full Text Available Après avoir été pendant longtemps le parent pauvre des études sur le Moyen-Orient contemporain, le Golfe arabo-persique fait aujourd’hui l’objet d’un nombre important de publications, tout particulièrement en langue anglaise. La présence croissante d’institutions universitaires américaines, Georgetown et NYU en premier lieu, ainsi qu’européennes avec la Sorbonne, mais aussi la création de centres de recherche telle l’antenne de la Rand Corporation au Qatar, favorisent indéniablement le dévelo...

  14. ¿Es el coeficiente de Hurst un buen indicador de extinción de especies?

    OpenAIRE

    Adela Salvador Alcaide; Alfonso Garmendia Salvador; Luis Garmendia Salvador

    2011-01-01

    La dimensión fractal de las fluctuaciones de los tamañospoblacionales se puede utilizar como un estimador del riesgo deextinción de una especie. El problema en la medición de esta dimensión fractal suele ser la longitud de la serie temporal, normalmente demasiado corta para que los resultados sean concluyentes. En este trabajo se ha analizado esta hipótesis con los datos obtenidos a partir de un modelo iterativo de competencia en diferentes regímenes de perturbación entre dos estrategias de g...

  15. Modelling of sea floor spreading initiation and rifted continental margin formation

    Science.gov (United States)

    Tymms, V. J.; Isimm Team

    2003-04-01

    SIMM investigators are V Tymms, NJ Kusznir, RS White, AM Roberts, PAF Christie, N Hurst, Z Lunnon, CJ Parkin, AW Roberts, LK Smith, R Spitzer, A. Davies and A. Surendra, with funding from NERC, DTI, Agip UK, BP, Amerada Hess Ltd., Anadarko, Conoco, Phillips, Shell, Statoil, and WesternGeco.

  16. Význam světových hotelových řetězců na rozvoj a modernizaci hotelnictví v Rusku

    OpenAIRE

    Skrebkova, Kristina

    2013-01-01

    The aim of the thesis is to analyze the current state of the international hotel industry and possibility of using international experience for the development of the hotel industry in Russia. The thesis is divided into three chapters. In the first chapter the hotel industry is examined from a theoretical point of view. The second chapter examines the trends of the international hotel industry, including the role of international hotel chains in the world. The third chapter is focused on the ...

  17. Observation of a Neutral Charmoniumlike State Z(c)(0) in e(+)e(-) -> (D*(D)over-bar*)(0)pi(0)

    NARCIS (Netherlands)

    Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Ferroli, R. Baldini; Ban, Y.; Bennett, D. W.; Bennett, J. V.; Bertani, M.; Bettoni, D.; Bian, J. M.; Bianchi, F.; Boger, E.; Boyko, I.; Briere, R. A.; Cai, H.; Cai, X.; Cakir, O.; Calcaterra, A.; Cao, G. F.; Cetin, S. A.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, H. Y.; Chen, J. C.; Chen, M. L.; Chen, S. J.; Chen, X.; Chen, X. R.; Chen, Y. B.; Cheng, H. P.; Chu, X. K.; Cibinetto, G.; Dai, H. L.; Dai, J. P.; Dbeyssi, A.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; De Mori, F.; Ding, Y.; Dong, C.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Du, S. X.; Duan, P. F.; Eren, E. E.; Fan, J. Z.; Fang, J.; Fang, S. S.; Fang, X.; Fang, Y.; Fava, L.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fioravanti, E.; Fritsch, M.; Fu, C. D.; Gao, Q.; Gao, X. Y.; Gao, Y.; Gao, Z.; Garzia, I.; Geng, C.; Goetzen, K.; Gong, W. X.; Gradl, W.; Greco, M.; Gu, M. H.; Gu, Y. T.; Guan, Y. H.; Guo, A. Q.; Guo, L. B.; Guo, Y.; Guo, Y. P.; Haddadi, Z.; Hafner, A.; Han, S.; Han, Y. L.; Hao, X. Q.; Harris, F. A.; He, K. L.; He, Z. Y.; Held, T.; Heng, Y. K.; Hou, Z. L.; Hu, C.; Hu, H. M.; Hu, J. F.; Hu, T.; Hu, Y.; Huang, G. M.; Huang, G. S.; Huang, H. P.; Huang, J. S.; Huang, X. T.; Huang, Y.; Hussain, T.; Ji, Q.; Ji, Q. P.; Ji, X. B.; Ji, X. L.; Jiang, L. L.; Jiang, L. W.; Jiang, X. S.; Jiang, X. Y.; Jiao, J. B.; Jiao, Z.; Jin, D. P.; Jin, S.; Johansson, T.; Julin, A.; Kalantar-Nayestanaki, N.; Kang, X. L.; Kang, X. S.; Kavatsyuk, M.; Ke, B. C.; Kiese, P.; Kliemt, R.; Kloss, B.; Kolcu, O. B.; Kopf, B.; Kornicer, M.; Kuehn, W.; Kupsc, A.; Lange, J. S.; Lara, M.; Larin, P.; Leng, C.; Li, C.; Li, C. H.; Li, Cheng; Li, D. M.; Li, F.; Li, G.; Li, H. B.; Li, J. C.; Li, Jin; Li, K.; Li, K.; Li, Lei; Li, P. R.; Li, T.; Li, W. D.; Li, W. G.; Li, X. L.; Li, X. M.; Li, X. N.; Li, X. Q.; Li, Z. B.; Liang, H.; Liang, Y. F.; Liang, Y. T.; Liao, G. R.; Lin, D. X.; Liu, B. J.; Liu, C. X.; Liu, F. H.; Liu, Fang; Liu, Feng; Liu, H. B.; Liu, H. H.; Liu, H. H.; Liu, H. M.; Liu, J.; Liu, J. B.; Liu, J. P.; Liu, J. Y.; Liu, K.; Liu, K. Y.; Liu, L. D.; Liu, P. L.; Liu, Q.; Liu, S. B.; Liu, X.; Liu, X. X.; Liu, Y. B.; Liu, Z. A.; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H.; Lou, X. C.; Lu, H. J.; Lu, J. G.; Lu, R. Q.; Lu, Y.; Lu, Y. P.; Luo, C. L.; Luo, M. X.; Luo, T.; Luo, X. L.; Lv, M.; Lyu, X. R.; Ma, F. C.; Ma, H. L.; Ma, L. L.; Ma, Q. M.; Ma, T.; Ma, X. N.; Ma, X. Y.; Maas, F. E.; Maggiora, M.; Mao, Y. J.; Mao, Z. P.; Marcello, S.; Messchendorp, J. G.; Min, J.; Min, T. J.; Mitchell, R. E.; Mo, X. H.; Mo, Y. J.; Morales, C. Morales; Moriya, K.; Muchnoi, N. Yu.; Muramatsu, H.; Nefedov, Y.; Nerling, F.; Nikolaev, I. B.; Ning, Z.; Nisar, S.; Niu, S. L.; Niu, X. Y.; Olsen, S. L.; Ouyang, Q.; Pacetti, S.; Patteri, P.; Pelizaeus, M.; Peng, H. P.; Peters, K.; Pettersson, J.; Ping, J. L.; Ping, R. G.; Poling, R.; Prasad, V.; Pu, Y. N.; Qi, M.; Qian, S.; Qiao, C. F.; Qin, L. Q.; Qin, N.; Qin, X. S.; Qin, Y.; Qin, Z. H.; Qiu, J. F.; Rashid, K. H.; Redmer, C. F.; Ren, H. L.; Ripka, M.; Rong, G.; Rosner, Ch.; Ruan, X. D.; Santoro, V.; Sarantsev, A.; Savrie, M.; Schoenning, K.; Schumann, S.; Shan, W.; Shao, M.; Shen, C. P.; Shen, P. X.; Shen, X. Y.; Sheng, H. Y.; Song, W. M.; Song, X. Y.; Sosio, S.; Spataro, S.; Sun, G. X.; Sun, J. F.; Sun, S. S.; Sun, Y. J.; Sun, Y. Z.; Sun, Z. J.; Sun, Z. T.; Tang, C. J.; Tang, X.; Tapan, I.; Thorndike, E. H.; Tiemens, M.; Ullrich, M.; Uman, I.; Varner, G. S.; Wang, B.; Wang, B. L.; Wang, D.; Wang, D. Y.; Wang, K.; Wang, L. L.; Wang, L. S.; Wang, M.; Wang, P.; Wang, P. L.; Wang, S. G.; Wang, W.; Wang, X. F.; Wang, Y. D.; Wang, Y. F.; Wang, Y. Q.; Wang, Z.; Wang, Z. G.; Wang, Z. H.; Wang, Z. Y.; Weber, T.; Wei, D. H.; Wei, J. B.; Weidenkaff, P.; Wen, S. P.; Wiedner, U.; Wolke, M.; Wu, L. H.; Wu, Z.; Xia, L. G.; Xia, Y.; Xiao, D.; Xiao, Z. J.; Xie, Y. G.; Xiu, Q. L.; Xu, G. F.; Xu, L.; Xu, Q. J.; Xu, Q. N.; Xu, X. P.; Yan, L.; Yan, W. B.; Yan, W. C.; Yan, Y. H.; Yang, H. J.; Yang, H. X.; Yang, L.; Yang, Y.; Yang, Y. X.; Ye, H.; Ye, M.; Ye, M. H.; Yin, J. H.; Yu, B. X.; Yu, C. X.; Yu, H. W.; Yu, J. S.; Yuan, C. Z.; Yuan, W. L.; Yuan, Y.; Yuncu, A.; Zafar, A. A.; Zallo, A.; Zeng, Y.; Zhang, B. X.; Zhang, B. Y.; Zhang, C.; Zhang, C. C.; Zhang, D. H.; Zhang, H. H.; Zhang, H. Y.; Zhang, J. J.; Zhang, J. L.; Zhang, J. Q.; Zhang, J. W.; Zhang, J. Y.; Zhang, J. Z.; Zhang, K.; Zhang, L.; Zhang, S. H.; Zhang, X. Y.; Zhang, Y.; Zhang, Y. N.; Zhang, Y. H.; Zhang, Y. T.; Zhang, Yu; Zhang, Z. H.; Zhang, Z. P.; Zhang, Z. Y.; Zhao, G.; Zhao, J. W.; Zhao, J. Y.; Zhao, J. Z.; Zhao, Lei; Zhao, Ling; Zhao, M. G.; Zhao, Q.; Zhao, Q. W.; Zhao, S. J.; Zhao, T. C.; Zhao, Y. B.; Zhao, Z. G.; Zhemchugov, A.; Zheng, B.; Zheng, J. P.; Zheng, W. J.; Zheng, Y. H.; Zhong, B.; Zhou, L.; Zhou, Li; Zhou, X.; Zhou, X. K.; Zhou, X. R.; Zhou, X. Y.; Zhu, K.; Zhu, K. J.; Zhu, S.; Zhu, X. L.; Zhu, Y. C.; Zhu, Y. S.; Zhu, Z. A.; Zhuang, J.; Zotti, L.; Zou, B. S.; Zou, J. H.

    2015-01-01

    We report a study of the process e(+)e(-) -> (D*(D) over bar*)(0)pi(0) using e(+)e(-) collision data samples with integrated luminosities of 1092 pb(-1) at root s = 4.23 GeV and 826 pb(-1) at root s = 4.26 GeV collected with the BESIII detector at the BEPCII storage ring. We observe a new neutral st

  18. AFSC/RACE/FBEP/Hurst: Distributional patterns of 0-group Pacific cod (Gadus macrocephalus) in the eastern Bering Sea under variable recruitment and thermal conditions

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is from a study that analyzed the late summer distribution of juvenile Pacific cod in the eastern Bering Sea for 6 cohorts (2004-2009), based on catches...

  19. Green functions and Langevin equations for nonlinear diffusion equations: A comment on ‘Markov processes, Hurst exponents, and nonlinear diffusion equations’ by Bassler et al.

    Science.gov (United States)

    Frank, T. D.

    2008-02-01

    We discuss two central claims made in the study by Bassler et al. [K.E. Bassler, G.H. Gunaratne, J.L. McCauley, Physica A 369 (2006) 343]. Bassler et al. claimed that Green functions and Langevin equations cannot be defined for nonlinear diffusion equations. In addition, they claimed that nonlinear diffusion equations are linear partial differential equations disguised as nonlinear ones. We review bottom-up and top-down approaches that have been used in the literature to derive Green functions for nonlinear diffusion equations and, in doing so, show that the first claim needs to be revised. We show that the second claim as well needs to be revised. To this end, we point out similarities and differences between non-autonomous linear Fokker-Planck equations and autonomous nonlinear Fokker-Planck equations. In this context, we raise the question whether Bassler et al.’s approach to financial markets is physically plausible because it necessitates the introduction of external traders and causes. Such external entities can easily be eliminated when taking self-organization principles and concepts of nonextensive thermostatistics into account and modeling financial processes by means of nonlinear Fokker-Planck equations.

  20. Testing the Effectiveness of Estimation Method of H Index%H指数估计方法的有效性检验

    Institute of Scientific and Technical Information of China (English)

    邹新月; 许涤龙

    2004-01-01

    Significance testing for the Hurst Exponent resulting from R/S analysis method is applied. Theconfidence intervals of the Hurst exponent is shown by Monte Carlo simulations and the influence of thescale factors on Hurst Exponent is also discussed.

  1. [3+2] Cycloadditions of 1-halo-1-nitroethenes with (Z-C-(3,4,5-trimethoxyphenyl-N-methyl-nitrone as regio- and stereocontrolled source of novel bioactive compounds: preliminary studies

    Directory of Open Access Journals (Sweden)

    Radomir Jasiński

    2016-07-01

    Full Text Available Preliminary experiments shows, that [3+2] cycloadditions reactions proceeds with full regioselectivity and high stereoselectivity. In consequence, 3,4-trans-2-methyl-3-(3,4,5-trimethoxyphenyl-4-halo-4-nitroisoxazolidines are forming as predominantly (or sole products. Additionally, prognosis for the synthesized compounds to be potential ingredients of drugs is good.

  2. Google Scholar ve Scirus Arama Motorlarında Türkçe Anahtar Sözcüklerle Yapılan Aramalar Üzerine Bir Değerlendirme

    National Research Council Canada - National Science Library

    ŞENOL, Canan; KESEN, Seda; YANAR, Zehra

    2008-01-01

    Bilgi miktarının hızla arttığı İnternet'te, farklı dillerde yaratılmış belgelerdeki bilgilere erişmek için arama motorları kullanılmaktadır. Bu çalışmanın amacı açık erişim bilgi kaynaklarına erişim...

  3. Quantifying Seagrass Light Requirements Using an Algorithm to Spatially Resolve Depth of Colonization-Conf Abstract

    Science.gov (United States)

    Depth of colonization (Zc) is a useful seagrass growth metric that describes seagrass response to light attenuation. Similarly, percent surface irradiance (% SI) at Zc is a measure of seagrass light requirements with applications in seagrass ecology and management. Methods for ...

  4. Electronic and magnetic properties of zigzag C2N-h2D nanoribbons: Edge and width effects

    Science.gov (United States)

    Yu, H. L.; Jiang, X. F.; Cai, M. Q.; Feng, J. F.; Chen, X. S.; Yang, X. F.; Liu, Y. S.

    2017-10-01

    Based on first-principles calculations, we have systematically investigated the structural stability, electronic and magnetic properties of zigzag C2N nanoribbons (ZC2NNRs). Different from zigzag graphene nanoribbons (ZGNRs), the ground states of ZC2NNRs present ferromagnetic metal, antiferromagnetic semiconductor and spin semiconductor dependently on the edge configuration and width of nanoribbons. Our results suggest the ZC2NNRs have great potential applications in spintronic, thermoelectric and optoelectronic devices.

  5. Gene : CBRC-PTRO-08-0056 [SEVENS

    Lifescience Database Archive (English)

    Full Text Available ED: similar to ZC178.1, partial [Macaca mulatta] 9e-74 64% MLTGILVNGVLPSLGVEVGMLVPSAVVGDELAAVEVVTSMLVSTGVVER...VLASELATGVVLTGILLNVVLPSLRVEVGMLLPSAVVGEELASPEVVTGVLLSSGVVERVLASEPATGMVLTSILVNGVLTSLGVEIGMLVPSAVVGEELPSVEVVTGMLVLTGVVER...VLASELATSMVLTGILVNGVLLSLGVEVGMLLPSAVVGDEWASVEVVTALLVSTGVVERVLIAELATGVVLTSILVNGMLPS ...

  6. Analysis and Solutions of the Damnification of Turbocharger for Exhaust Collector leaking in a type 8300ZC Marine Diesel Engine%8300ZC主机排气总管漏水导致增压器故障的分析和排除

    Institute of Scientific and Technical Information of China (English)

    侯彪; 章炜; 田野; 仇远旺

    2008-01-01

    针对8300ZC柴油机转速降低、排温升高、冒黑烟及增压器轻微喘振的故障现象进行分析判断,确定了排气总管漏水导致增压器喷嘴阻塞的真正原因,并为防止出现类似故障提出了几点主机管理和维护需注意的事项.

  7. Google Scholar ve Scirus Arama Motorlarında Türkçe Anahtar Sözcüklerle Yapılan Aramalar Üzerine Bir Değerlendirme / An Evaluation of Google Scholar and Scirus Search Engines Using Turkish Search Queries

    Directory of Open Access Journals (Sweden)

    Seda Kesen

    2008-04-01

    Full Text Available [Turkish abstract]Bilgi miktarının hızla arttığı İnternet’te, farklı dillerde yaratılmış belgelerdeki bilgilere erişmek için arama motorları kullanılmaktadır. Bu çalışmanın amacı açık erişim bilgi kaynaklarına erişim sağlayan Google Scholar ve Scirus arama motorlarının özel Türkçe karakterleri (ç, ğ, ı, ö, ş, ü doğru görüntüleyip görüntülemediklerini saptamak ve bu arama motorlarını erişilen belge sayısı yönünden değerlendirmektir. Her iki arama motorunda da özel karakterler alfabeye uygun olarak görüntülenmiş, fakat Türkçe karakterler farklı yorumlanmıştır. Bu farklılıklar bilgi erişim açısından büyük sorunları da beraberinde getirmektedir. Türkçe açık erişim kaynaklarının üst verileri (metadata Türkçe özel karakterlere uygun bir şekilde oluşturul-malı ve arama motorları Türkçe karakterleri destekleyecek biçimde geliştirilmelidir. [English abstract]Due to the rapid growth of information on the Internet, search engines are used to getting information included in documents created in different languages. This paper aims to find out if the two search engines providing access to Open Access information sources, Google Scholar and Scirus, display the search results appropriately for special Turkish characters (ç, ğ, ı, ö, ş, ü and to evaluate them on the basis of the total number of retrieved documents. Both search engines displayed the Turkish special characters correctly, but the search results differed. These differences create information retrieval problems for Turkish queries. Metadata of the Open Access Turkish information sources should be created using special Turkish characters and search engines should be developed to support them.

  8. Finalizing the Dtag: implementation and testing of design improvements for reliability and availability

    Science.gov (United States)

    2016-10-14

    PROJECT NUMBER K. Alex Shorter, University of Michigan 13039100 Tom Hurst, Woods Hole Oceanographic Institution Se. TASK NUMBER Mark Johnson...uu 18. NUMBER OF PAGES 10 19a. NAME OF RESPONSIBLE PERSON Tom Hurst 19b. TELEPHONE NUMBER (Include area code) 508-289-2906 Standard Form 298...of design improvements for reliability and availability K. Alex Shorter, University of Michigan, Ann Arbor, Ml481 04 Tom Hurst, Woods Hole

  9. The Aorta: Built to Last a Lifetime?

    Science.gov (United States)

    2007-11-02

    downstream from that point. The input impedance (Zc) depends on arterial distensibility and cross sectional area according to the relation: Zc = k1...The increased pulse pressure is amplified as the pulse propagates towards peripheral muscular arteries contributing to their hypertrophy and a

  10. Examining the role of tuber biochemistry in the development of zebra chip in stored potato tubers

    Science.gov (United States)

    Zebra chip disease (ZC), associated with infection by the bacterium ‘Candidatus Liberibacter solanacearum’ (Lso), is an emerging problem for potato growers in the United States, Mexico, and New Zealand. Although potato tubers exhibiting ZC symptoms will be rejected by processors, it remains possible...

  11. Zebra Chip disease and potato biochemistry: Tuber physiological changes in response to ‘Candidatus Liberibacter solanacearum’ infection over time

    Science.gov (United States)

    Zebra chip disease (ZC), putatively caused by ‘Candidatus Liberibacter solanacearum’ (Lso), is of increasing concern to potato production in Mexico, the United States, and New Zealand. However, little is known about host tuber physiological changes that result in ZC symptom formation. This study exp...

  12. A 10-year analysis of the "Amsterdam" protocol in the treatment of zygomatic complex fractures

    NARCIS (Netherlands)

    Forouzanfar, T.; Salentijn, E.; Peng, G.; van den Bergh, B.

    2013-01-01

    Despite many publications on the epidemiology, incidence and aetiology of zygomatic complex (ZC) fractures there is still a lack of information about a consensus in its treatment. The aim of the present study is to investigate retrospectively the Amsterdam protocol for surgical treatment of ZC

  13. AcEST: DK959154 [AcEST

    Lifescience Database Archive (English)

    Full Text Available fadin OS=Rattus norvegicus GN=Mllt4 PE=1 SV=1 33 0.57 sp|Q80ZC9|PS1C2_MOUSE Psoriasis susceptibility 1 candi...APPPPPQRNASYLKTQVLSPDSLF 1731 >sp|Q80ZC9|PS1C2_MOUSE Psoriasis susceptibility 1 candidate gene 2 protein hom

  14. Quantifying Seagrass Light Requirements Using an Algorithm to Spatially Resolve Depth of Colonization

    Science.gov (United States)

    The maximum depth of colonization (Zc) is a useful measure of seagrass growth that describes response to light attenuation in the water column. However, lack of standardization among methods for estimating Zc has limited the description of habitat requirements at spatial scales m...

  15. Observation of a charged (DD*)± mass peak in e+ e- → πDD* at sqrt[s] = 4.26  GeV.

    Science.gov (United States)

    Ablikim, M; Achasov, M N; Albayrak, O; Ambrose, D J; An, F F; An, Q; Bai, J Z; Baldini Ferroli, R; Ban, Y; Becker, J; Bennett, J V; Bertani, M; Bian, J M; Boger, E; Bondarenko, O; Boyko, I; Braun, S; Briere, R A; Bytev, V; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, J C; Chen, M L; Chen, S J; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Chu, Y P; Cronin-Hennessy, D; Dai, H L; Dai, J P; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; Ding, W M; Ding, Y; Dong, L Y; Dong, M Y; Du, S X; Fang, J; Fang, S S; Fava, L; Feng, C Q; Friedel, P; Fu, C D; Fu, J L; Fuks, O; Gao, Y; Geng, C; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, T; Guo, Y P; Han, Y L; Harris, F A; He, K L; He, M; He, Z Y; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Huang, G M; Huang, G S; Huang, J S; Huang, L; Huang, X T; Huang, Y; Hussain, T; Ji, C S; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, X S; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Jing, F F; Kalantar-Nayestanaki, N; Kavatsyuk, M; Kloss, B; Kopf, B; Kornicer, M; Kuehn, W; Lai, W; Lange, J S; Lara, M; Larin, P; Leyhe, M; Li, C H; Li, Cheng; Li, Cui; Li, D L; Li, D M; Li, F; Li, G; Li, H B; Li, J C; Li, K; Li, Lei; Li, N; Li, P R; Li, Q J; Li, W D; Li, W G; Li, X L; Li, X N; Li, X Q; Li, X R; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Lin, D X; Liu, B J; Liu, C L; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H B; Liu, H H; Liu, H M; Liu, J P; Liu, K; Liu, K Y; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, Y B; Liu, Z A; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, G R; Lu, H J; Lu, J G; Lu, X R; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lv, M; Ma, F C; Ma, H L; Ma, Q M; Ma, S; Ma, T; Ma, X Y; Maas, F E; Maggiora, M; Malik, Q A; Mao, Y J; Mao, Z P; Messchendorp, J G; Min, J; Min, T J; Mitchell, R E; Mo, X H; Moeini, H; MoralesMorales, C; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nikolaev, I B; Ning, Z; Nisar, S; Olsen, S L; Ouyang, Q; Pacetti, S; Park, J W; Pelizaeus, M; Peng, H P; Peters, K; Ping, J L; Ping, R G; Poling, R; Prencipe, E; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, X S; Qin, Y; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Ripka, M; Rong, G; Ruan, X D; Sarantsev, A; Schumann, S; Shan, W; Shao, M; Shen, C P; Shen, X Y; Sheng, H Y; Shepherd, M R; Song, W M; Song, X Y; Spataro, S; Spruck, B; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Toth, D; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, Q J; Wang, S G; Wang, X F; Wang, X L; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z H; Wang, Z Y; Wei, D H; Wei, J B; Weidenkaff, P; Wen, Q G; Wen, S P; Werner, M; Wiedner, U; Wu, L H; Wu, N; Wu, S X; Wu, W; Wu, Z; Xia, L G; Xia, Y X; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, Q J; Xu, Q N; Xu, X P; Xue, Z; Yan, L; Yan, W B; Yan, W C; Yan, Y H; Yang, H X; Yang, Y; Yang, Y X; Yang, Y Z; Ye, H; Ye, M; Ye, M H; Yu, B X; Yu, C X; Yu, H W; Yu, J S; Yu, S P; Yuan, C Z; Yuan, W L; Yuan, Y; Zafar, A A; Zallo, A; Zang, S L; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C B; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J L; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, LiLi; Zhang, S H; Zhang, X J; Zhang, X Y; Zhang, Y; Zhang, Y H; Zhang, Z P; Zhang, Z Y; Zhang, Zhenghao; Zhao, G; Zhao, J W; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, S J; Zhao, T C; Zhao, X H; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, Y H; Zhong, B; Zhou, L; Zhou, X; Zhou, X K; Zhou, X R; Zhu, K; Zhu, K J; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, J; Zou, B S; Zou, J H

    2014-01-17

    We report on a study of the process e+ e- → π± (DD*)∓ at sqrt[s] = 4.26  GeV using a 525 pb(-1) data sample collected with the BESIII detector at the BEPCII storage ring. A distinct charged structure is observed in the (DD*)∓ invariant mass distribution. When fitted to a mass-dependent-width Breit-Wigner line shape, the pole mass and width are determined to be Mpole = (3883.9±1.5(stat)±4.2(syst))  MeV/c2 and Γpole = (24.8±3.3(stat)±11.0(syst))  MeV. The mass and width of the structure, which we refer to as Zc(3885), are 2σ and 1σ, respectively, below those of the Zc(3900) → π± J/ψ peak observed by BESIII and Belle in π+ π- J/ψ final states produced at the same center-of-mass energy. The angular distribution of the πZc(3885) system favors a JP = 1+ quantum number assignment for the structure and disfavors 1- or 0-. The Born cross section times the DD* branching fraction of the Zc(3885) is measured to be σ(e+ e- → π± Zc(3885)∓)×B(Zc(3885)∓ → (DD*)∓) = (83.5±6.6(stat)±22.0(syst))   pb. Assuming the Zc(3885) → DD* signal reported here and the Zc(3900) → πJ/ψ signal are from the same source, the partial width ratio (Γ(Zc(3885) → DD*)/Γ(Zc(3900) → πJ/ψ)) = 6.2±1.1(stat)±2.7(syst) is determined.

  16. 75 FR 23642 - Proposed Flood Elevation Determinations

    Science.gov (United States)

    2010-05-04

    ... Havana. Approximately 600 feet north of Hurst Street/ East boundary: Approximately 125 feet west of... 330 feet east of Pearl Street extended. Ponding North boundary: None +460 City of Havana... Street and Hurst Street. Ponding North boundary: None +460 City of Havana. Approximately 100 feet south...

  17. Clausewitz’s Trinity: Dead or Alive?

    Science.gov (United States)

    2013-05-23

    Hitler’s racial and anti-Semetic ideas see Adolf Hitler, Mein Kampf , trans. Murphy James (London: Hurst and Blanckett Ldt., 1925/1939), Vol. II, ch...Hitler, Adolf. Mein Kampf . Translated by Murphy James. London: Hurst and Blanckett Ldt., 1925/1939. Hoffman, Bruse. Inside Terrorism. New York, NY

  18. 77 FR 17548 - Self-Regulatory Organizations; Municipal Securities Rulemaking Board; Notice of Filing of...

    Science.gov (United States)

    2012-03-26

    ... violated Rule G-17 by accepting bids after bid deadline); SEC v. Wolfe & Hurst Bond Brokers, Inc. et al... proposed rule change.\\9\\ Comments were received from Bond Dealers of America (``BDA''); Tom Dolan (``Mr.... (``TMC''); Vista Securities, Inc. (``Vista Securities''); and Wolfe & Hurst Bond Brokers, Inc....

  19. Elucidating novel dysfunctional pathways in Alzheimer's disease by integrating loci identified in genetic and epigenetic studies

    Directory of Open Access Journals (Sweden)

    Adam R. Smith

    2016-06-01

    Full Text Available Alzheimer's disease is a complex neurodegenerative disorder. A large number of genome-wide association studies have been performed, which have been supplemented more recently by the first epigenome-wide association studies, leading to the identification of a number of novel loci altered in disease. Twin studies have shown monozygotic twin discordance for Alzheimer's disease (Gatz et al., 2006, leading to the conclusion that a combination of genetic and epigenetic mechanisms is likely to be involved in disease etiology (Lunnon & Mill, 2013. This review focuses on identifying overlapping pathways between published genome-wide association studies and epigenome-wide association studies, highlighting dysfunctional synaptic, lipid metabolism, plasma membrane/cytoskeleton, mitochondrial, and immune cell activation pathways. Identifying common pathways altered in genetic and epigenetic studies will aid our understanding of disease mechanisms and identify potential novel targets for pharmacological intervention.

  20. 75 FR 48934 - Coral Reef Conservation Program Implementation Guidelines

    Science.gov (United States)

    2010-08-12

    ... National Oceanic and Atmospheric Administration RIN 0648-ZC19 Coral Reef Conservation Program... Implementation Guidelines for the Coral Reef Conservation Program. SUMMARY: This document provides NOAA's revised Grant Program Implementation Guidelines (Guidelines) for the Coral Reef Conservation Program (CRCP or...

  1. XYZ physics at BESIII experiment

    CERN Document Server

    Liu, Zhiqing

    2015-01-01

    With the ability to run above 4~GeV, the BESIII experiment located in the Beijing Electron Positron Collider (BEPCII), has becoming a pioneer in searching and studying charmoniumlike states ($XYZ$ particles). In 2013, BESIII Collaboration discovered a charged charmoniumlike state $Z_c(3900)$, which is confirmed immediately experimentally, and provides the best candidate for a four quark state by now. Continuous studies by BESIII Collaboration show new decay behavior of $Z_c(3900)$, and there are possible partner particle $Z_c(4020)/Z_c(4025)$ existing. By scanning above 4~GeV, BESIII also reveals the potential connection between $Y(4260)$ and $X(3872)$ for the first time, which may help us understand $XYZ$ particles in a new sight.

  2. Evolution of spherical over-densities in tachyon scalar field model

    Science.gov (United States)

    Setare, M. R.; Felegary, F.; Darabi, F.

    2017-09-01

    We study the tachyon scalar field model in flat FRW cosmology with the particular potential ϕ-2 and the scale factor behavior a (t) =tn. We consider the spherical collapse model and investigate the effects of the tachyon scalar field on the structure formation in flat FRW universe. We calculate δc (zc), λ (zc), ξ (zc), ΔV (zc), log ⁡ [ νf (ν) ] and log ⁡ [ n (k) ] for the tachyon scalar field model and compare the results with the results of EdS model and ΛCDM model. It is shown that in the tachyon scalar field model the structure formation may occur earlier, in comparison to the other models.

  3. The prime graph conjecture for integral group rings of some alternatings groups

    Directory of Open Access Journals (Sweden)

    Mohamed Salim

    2013-03-01

    Full Text Available We investigate the classical Zassenhaus Conjecture (ZC for integral group rings of alternating groups A9 and A10. Even the question (ZC remains open as no counterexample is known up to date, it been confirmed for special types of groups such as nilpotent groups by Roggenkamp, Scot and Weiss. However, a new method based on the partial augmentation of torsion units been established by Luthar and Passi to confirm the (ZC for A5. Later a weaker version of (ZC was proposed in 2007, we call it the Prime Graph Conjecture (PGC about the Gruenberg-Kegel (prime graph of the group of all normalized units of the integral group ring of a finite group. Recently, the (PGC has a positive answer for solvable groups, Frobenius groups and several simple groups. Here, as a consequence of our results, we confirm the (PGC for integral group rings of alternating groups An for all n<11.

  4. Zebra chip disease incidence on potato is influenced by timing of potato psyllid infestation,but not by the host plants on which they were reared

    Institute of Scientific and Technical Information of China (English)

    Feng Gao; John Jifon; Xiangbing Yang; Tong-Xian Liu

    2009-01-01

    The Zebra chip (ZC) syndrome is an emerging disease of potato and a major threat to the potato industry.The potato psyllid,Bactericerca cockerelli (Sulc) is believed to be a vector of the ZC pathogen,which is now thought to be Candidatus Liberibacter,a bacterium.To further understand the relationship between potato psyllid infestation and ZC disease expression,healthy potato plants at different growth stages (4,6 and 10 weeks after germination) were exposed separately to potato psyllids that were separately reared on four solanaceons hosts plants (potato,tomato,eggplant or bell pepper) for more than 1 year.ZC symptoms,leaf rates and total nonstructural carbohydrate accumulation in leaves and tubers of healthy and psyllid-infested plants were monitored and recorded.Typical ZC symptoms were observed in leaves and tubers of all plants exposed to potato psyllids regardless of the host plant on which they were reared.This was also accompanied by significant reductions in net photosynthetic rate.Caged potato plants without exposure to potato psyllids (uninfested controls) did not show any ZC symptom in both foliage and in harvested tubers.Foliage damage and ZC expression were most severe in the potato plants that were exposed to potato psyllids 4 weeks after germination compared to plants infested at later growth stages.Tubers from potato psyllid-infested plants had significantly higher levels of reducing sugars (glucose) and lower levels of starch than those in healthy plants,indicating that potato psyllid infestation interfered with carbohydrate metabolism in either leaves or tubers,resulting in ZC expression.

  5. Charmonia and exotics from BESIII

    CERN Document Server

    Kornicer, Mihajlo

    2015-01-01

    Several states that couple to one light-meson and a heavy-charmonium are recently reported, including the $Z_c(3900)$ and $Z_c(4020)$. These states cannot be interpreted within the constituent quark-model of mesons, and are good candidates for a new form of quark matter, four-quark matter. A review of recent results on new charmonium-like states studied at BESIII is presented.

  6. Local regularity analysis of strata heterogeneities from sonic logs

    Directory of Open Access Journals (Sweden)

    S. Gaci

    2010-09-01

    Full Text Available Borehole logs provide geological information about the rocks crossed by the wells. Several properties of rocks can be interpreted in terms of lithology, type and quantity of the fluid filling the pores and fractures.

    Here, the logs are assumed to be nonhomogeneous Brownian motions (nhBms which are generalized fractional Brownian motions (fBms indexed by depth-dependent Hurst parameters H(z. Three techniques, the local wavelet approach (LWA, the average-local wavelet approach (ALWA, and Peltier Algorithm (PA, are suggested to estimate the Hurst functions (or the regularity profiles from the logs.

    First, two synthetic sonic logs with different parameters, shaped by the successive random additions (SRA algorithm, are used to demonstrate the potential of the proposed methods. The obtained Hurst functions are close to the theoretical Hurst functions. Besides, the transitions between the modeled layers are marked by Hurst values discontinuities. It is also shown that PA leads to the best Hurst value estimations.

    Second, we investigate the multifractional property of sonic logs data recorded at two scientific deep boreholes: the pilot hole VB and the ultra deep main hole HB, drilled for the German Continental Deep Drilling Program (KTB. All the regularity profiles independently obtained for the logs provide a clear correlation with lithology, and from each regularity profile, we derive a similar segmentation in terms of lithological units. The lithological discontinuities (strata' bounds and faults contacts are located at the local extrema of the Hurst functions. Moreover, the regularity profiles are compared with the KTB estimated porosity logs, showing a significant relation between the local extrema of the Hurst functions and the fluid-filled fractures. The Hurst function may then constitute a tool to characterize underground heterogeneities.

  7. What Kind of Initial Errors Cause the Severest Prediction Uncertainty of EI Nino in Zebiak-Cane Model

    Institute of Scientific and Technical Information of China (English)

    XU Hui; DUAN Wansuo

    2008-01-01

    With the Zebiak-Cane (ZC) model, the initial error that has the largest effect on ENSO prediction is explored by conditional nonlinear optimal perturbation (CNOP). The results demonstrate that CNOP-type errors cause the largest prediction error of ENSO in the ZC model. By analyzing the behavior of CNOP- type errors, we find that for the normal states and the relatively weak EI Nino events in the ZC model, the predictions tend to yield false alarms due to the uncertainties caused by CNOP. For the relatively strong EI Nino events, the ZC model largely underestimates their intensities. Also, our results suggest that the error growth of EI Nino in the ZC model depends on the phases of both the annual cycle and ENSO. The condition during northern spring and summer is most favorable for the error growth. The ENSO prediction bestriding these two seasons may be the most difficult. A linear singular vector (LSV) approach is also used to estimate the error growth of ENSO, but it underestimates the prediction uncertainties of ENSO in the ZC model. This result indicates that the different initial errors cause different amplitudes of prediction errors though they have same magnitudes. CNOP yields the severest prediction uncertainty. That is to say, the prediction skill of ENSO is closely related to the types of initial error. This finding illustrates a theoretical basis of data assimilation. It is expected that a data assimilation method can filter the initial errors related to CNOP and improve the ENSO forecast skill.

  8. Transcriptome Analysis of an Anthracnose-Resistant Tea Plant Cultivar Reveals Genes Associated with Resistance to Colletotrichum camelliae.

    Science.gov (United States)

    Wang, Lu; Wang, Yuchun; Cao, Hongli; Hao, Xinyuan; Zeng, Jianming; Yang, Yajun; Wang, Xinchao

    2016-01-01

    Tea plant breeding is a topic of great economic importance. However, disease remains a major cause of yield and quality losses. In this study, an anthracnose-resistant cultivar, ZC108, was developed. An infection assay revealed different responses to Colletotrichum sp. infection between ZC108 and its parent cultivar LJ43. ZC108 had greater resistance than LJ43 to Colletotrichum camelliae. Additionally, ZC108 exhibited earlier sprouting in the spring, as well as different leaf shape and plant architecture. Microarray data revealed that the genes that are differentially expressed between LJ43 and ZC108 mapped to secondary metabolism-related pathways, including phenylpropanoid biosynthesis, phenylalanine metabolism, and flavonoid biosynthesis pathways. In addition, genes involved in plant hormone biosynthesis and signaling as well as plant-pathogen interaction pathways were also changed. Quantitative real-time PCR was used to examine the expression of 27 selected genes in infected and uninfected tea plant leaves. Genes encoding a MADS-box transcription factor, NBS-LRR disease-resistance protein, and phenylpropanoid metabolism pathway components (CAD, CCR, POD, beta-glucosidase, ALDH and PAL) were among those differentially expressed in ZC108.

  9. Relationship between efficiency and predictability in stock price change

    Science.gov (United States)

    Eom, Cheoljun; Oh, Gabjin; Jung, Woo-Sung

    2008-09-01

    In this study, we evaluate the relationship between efficiency and predictability in the stock market. The efficiency, which is the issue addressed by the weak-form efficient market hypothesis, is calculated using the Hurst exponent and the approximate entropy (ApEn). The predictability corresponds to the hit-rate; this is the rate of consistency between the direction of the actual price change and that of the predicted price change, as calculated via the nearest neighbor prediction method. We determine that the Hurst exponent and the ApEn value are negatively correlated. However, predictability is positively correlated with the Hurst exponent.

  10. The use of copula functions for modeling the risk of investment in shares traded on the Warsaw Stock Exchange

    Science.gov (United States)

    Domino, Krzysztof; Błachowicz, Tomasz

    2014-11-01

    In our work copula functions and the Hurst exponent calculated using the local Detrended Fluctuation Analysis (DFA) were used to investigate the risk of investment made in shares traded on the Warsaw Stock Exchange. The combination of copula functions and the Hurst exponent calculated using local DFA is a new approach. For copula function analysis bivariate variables composed of shares prices of the PEKAO bank (a big bank with high capitalization) and other banks (PKOBP, BZ WBK, MBANK and HANDLOWY in decreasing capitalization order) and companies from other branches (KGHM-mining industry, PKNORLEN-petrol industry as well as ASSECO-software industry) were used. Hurst exponents were calculated for daily shares prices and used to predict high drops of those prices. It appeared to be a valuable indicator in the copula selection procedure, since Hurst exponent’s low values were pointing on heavily tailed copulas e.g. the Clayton one.

  11. The Portuguese Language on the Gold Coast, 1471-1807

    African Journals Online (AJOL)

    mary

    local people, but acknowledging that Europeans of various nationalities used it too, .... wordlist of local Portuguese, and we can imagine that most of them did not think such ..... Longman, Hurst, Rees, Orme, and Brown. ... V: Vogt, John, 1979.

  12. Efficiency of Thai stock markets: Detrended fluctuation analysis

    Science.gov (United States)

    Sukpitak, Jessada; Hengpunya, Varagorn

    2016-09-01

    The evolution of Hurst exponent of SET index over time, as a measure of market efficiency, is examined by DFA method. It is found that, during the study period, Hurst exponent tends to decrease to the ideal value 0.5, i.e., the market becomes more efficient. This finding readily conforms to the assertion that emerging markets are becoming more efficient. Additionally, the development of Hurst exponent during November 2006 to March 2015 of SET index compared to MAI index is investigated. The result shows that the deviation of the Hurst exponent from 0.5 for the MAI index is larger than that of the SET index. This implies that SET is more efficient than MAI and thus supports the assumption that market capitalization has significant influence on market efficiency.

  13. Characterization of turbulence stability through the identification of multifractional Brownian motions

    Directory of Open Access Journals (Sweden)

    K. C. Lee

    2013-02-01

    Full Text Available Multifractional Brownian motions have become popular as flexible models in describing real-life signals of high-frequency features in geoscience, microeconomics, and turbulence, to name a few. The time-changing Hurst exponent, which describes regularity levels depending on time measurements, and variance, which relates to an energy level, are two parameters that characterize multifractional Brownian motions. This research suggests a combined method of estimating the time-changing Hurst exponent and variance using the local variation of sampled paths of signals. The method consists of two phases: initially estimating global variance and then accurately estimating the time-changing Hurst exponent. A simulation study shows its performance in estimation of the parameters. The proposed method is applied to characterization of atmospheric stability in which descriptive statistics from the estimated time-changing Hurst exponent and variance classify stable atmosphere flows from unstable ones.

  14. PESTICIDE RESIDUES IN THE WATER AND FISH (LAGOON ...

    African Journals Online (AJOL)

    Preferred Customer

    The sampling sites involve areas in Ghana where most industries are ... Solvents used were ethyl acetate, dichloromethane, acetonitrile, and hexane. ..... Hurst, P.; Alistair, H.; Nigel, D. The Pesticide Handbook, Journeyman Press: London;.

  15. Characterization of turbulence stability through the identification of multifractional Brownian motions

    Science.gov (United States)

    Lee, K. C.

    2013-02-01

    Multifractional Brownian motions have become popular as flexible models in describing real-life signals of high-frequency features in geoscience, microeconomics, and turbulence, to name a few. The time-changing Hurst exponent, which describes regularity levels depending on time measurements, and variance, which relates to an energy level, are two parameters that characterize multifractional Brownian motions. This research suggests a combined method of estimating the time-changing Hurst exponent and variance using the local variation of sampled paths of signals. The method consists of two phases: initially estimating global variance and then accurately estimating the time-changing Hurst exponent. A simulation study shows its performance in estimation of the parameters. The proposed method is applied to characterization of atmospheric stability in which descriptive statistics from the estimated time-changing Hurst exponent and variance classify stable atmosphere flows from unstable ones.

  16. Harnack Inequalities and Applications for Stochastic Differential Equations Driven by Fractional Brownian Motion

    CERN Document Server

    Fan, Xi-Liang

    2012-01-01

    In the paper, Harnack inequalities are established for stochastic differential equations driven by fractional Brownian motion with Hurst parameter $H<1/2$. As applications, strong Feller property, log-Harnack inequality and entropy-cost inequality are given.

  17. Stochastic Volterra Equation Driven by Wiener Process and Fractional Brownian Motion

    Directory of Open Access Journals (Sweden)

    Zhi Wang

    2013-01-01

    Full Text Available For a mixed stochastic Volterra equation driven by Wiener process and fractional Brownian motion with Hurst parameter H>1/2, we prove an existence and uniqueness result for this equation under suitable assumptions.

  18. Pride, Prejudice, and Pejoratives at Peenemunde: Interservice Rivalry and Terror Weapons in the Third Reich

    Science.gov (United States)

    2010-06-01

    God, Adolph Hitler (New York: De Capo Press, 1977), 87. 83 comments regarding Hamburg and his writing In Mein Kampf : ―I found it difficult to defend...head 60 Adolf Hitler, Mein Kampf Translated by James Murphy (London: Hurst and Blackett, original...Adolf. Mein Kampf Translated by James Murphy, London: Hurst and Blackett, original published in 1925. 109 Hoffman, Bruce. Inside Terrorism. New

  19. On the interplay between short and long term memory in the power-law cross-correlations setting

    CERN Document Server

    Kristoufek, Ladislav

    2014-01-01

    We focus on emergence of the power-law cross-correlations from processes with both short and long term memory properties. In the case of correlated error-terms, the power-law decay of the cross-correlation function comes automatically with the characteristics of the separate processes. The bivariate Hurst exponent is then equal to an average of the separate Hurst exponents of the analysed processes. Strength of the short term memory has no effect on these asymptotic properties.

  20. Scaling and long-range dependence in option pricing III: A fractional version of the Merton model with transaction costs

    Science.gov (United States)

    Wang, Xiao-Tian; Yan, Hai-Gang; Tang, Ming-Ming; Zhu, En-Hui

    2010-02-01

    A model for option pricing of fractional version of the Merton model with ‘Hurst exponent’ H being in [1/2,1) is established with transaction costs. In particular, for H∈(1/2,1) the minimal price Cmin(t,St) of an option under transaction costs is obtained, which displays that the timestep δt and the ‘Hurst exponent’ H play an important role in option pricing with transaction costs.

  1. Vasodilation effect of 2-benzyl-5-hydroxy-6-methoxy-3, 4-dihydroisoquinolin-1-one.

    Science.gov (United States)

    Xu, Wei-Qi; Xiong, Zhi-Zheng; Chen, Ting-Ting; Gao, Xiao-Yan; Yu, Hang; Zhang, San-Qi; Cao, Yong-Xiao

    2012-08-01

    A 2-Benzyl-5-hydroxy-6-methoxy-3, 4-dihydroisoquinolin-1-one (ZC2) is a newly synthesized isoquinolinone compound. Its effect on vasodilation was evaluated in the present study. Isometric tension of rat artery rings was recorded by a sensitive myography system in vitro. The results showed that ZC2 relaxed rat mesenteric arteries pre-contracted by KCl, phenylephrine and 9, 11- dideoxy- 11α, 9α-epoxymethano-prostaglandin F2α (U46619), and abdominal aorta pre-contracted by KCl in a concentration-dependent manner. The ZC2-induced vasodilation was not affected by an endothelium denudation. ZC2 rightwards shifted the concentration-contraction curves, induced by KCl, phenylephrine, and 5-hydroxytryptamine (5-HT) in a non-parallel manner, which suggests that the vasodilation effects are most likely via voltage-dependent calcium channel (VDCC) and receptor-operated calcium channel (ROCC). Moreover, in Ca(2+)-free medium, ZC2 concentration-dependently depressed the vasoconstrictions induced by phenylephrine and CaCl(2), and decreased a contractile response induced by caffeine, which indicates a role of extracellular Ca(2+) influx inhibition through VDCC and ROCC, and intracellular Ca(2+) release from Ca(2+) store via the ryanodine receptors. Glibenclamide did not affect the vasodilation induced by ZC2, suggesting that ATP sensitive potassium channel is not involved in the vasodilation. The results indicate that ZC2 induces vasodilation by inhibiting the VDCC and ROCC, and receptormediated Ca(2+) influx and release. The inhibition of intracellular Ca(2+) release may be mediated via the ryanodine receptors.

  2. Molecular and physiological properties associated with zebra complex disease in potatoes and its relation with Candidatus Liberibacter contents in psyllid vectors.

    Directory of Open Access Journals (Sweden)

    Veria Y Alvarado

    Full Text Available Zebra complex (ZC disease on potatoes is associated with Candidatus Liberibacter solanacearum (CLs, an α-proteobacterium that resides in the plant phloem and is transmitted by the potato psyllid Bactericera cockerelli (Šulc. The name ZC originates from the brown striping in fried chips of infected tubers, but the whole plants also exhibit a variety of morphological features and symptoms for which the physiological or molecular basis are not understood. We determined that compared to healthy plants, stems of ZC-plants accumulate starch and more than three-fold total protein, including gene expression regulatory factors (e.g. cyclophilin and tuber storage proteins (e.g., patatins, indicating that ZC-affected stems are reprogrammed to exhibit tuber-like physiological properties. Furthermore, the total phenolic content in ZC potato stems was elevated two-fold, and amounts of polyphenol oxidase enzyme were also high, both serving to explain the ZC-hallmark rapid brown discoloration of air-exposed damaged tissue. Newly developed quantitative and/or conventional PCR demonstrated that the percentage of psyllids in laboratory colonies containing detectable levels of CLs and its titer could fluctuate over time with effects on colony prolificacy, but presumed reproduction-associated primary endosymbiont levels remained stable. Potato plants exposed in the laboratory to psyllid populations with relatively low-CLs content survived while exposure of plants to high-CLs psyllids rapidly culminated in a lethal collapse. In conclusion, we identified plant physiological biomarkers associated with the presence of ZC and/or CLs in the vegetative potato plant tissue and determined that the titer of CLs in the psyllid population directly affects the rate of disease development in plants.

  3. Ammonia-treated porous carbon derived from ZIF-8 for enhanced CO{sub 2} adsorption

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Xiancheng [School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan (China); Li, Liqing, E-mail: liqingli@hotmail.com [School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan (China); Wang, Shaobin [Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth 6845, WA (Australia); Lu, Mingming [Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221 (United States); Li, Hailong; Ma, Weiwu [School of Energy Science and Engineering, Central South University, Changsha 410083, Hunan (China); Keener, Tim C. [Department of Civil and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221 (United States)

    2016-04-30

    Graphical abstract: The role of nitrogen species in increasing CO{sub 2} adsorption capacity has been explained with the mechanisms of base–acid interaction, as well as hydrogen bonds interaction. - Highlights: • A porous carbon (ZC) was prepared at 900 °C using ZIF-8 as a solid template for CO{sub 2} adsorption. • The ZC was further treated by ammonia functionalization to improve CO{sub 2} uptake. • The detailed interaction mechanism between N-containing groups and CO{sub 2} molecules is elucidated. - Abstract: A porous carbon (ZC) was prepared at 900 °C using zeolitic imidazolate framework-8 (ZIF-8) as a solid template for CO{sub 2} adsorption. The ZC was further treated by ammonia functionalization to improve CO{sub 2} uptake. The textural and surface characteristics of ZC samples were determined by X-ray diffraction (XRD), N{sub 2} adsorption, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). It was revealed that ammonia treatment at 600 °C considerably enhanced the specific surface area and N-content of ZC. However, the pyrrolic-N group was decreased, yet the pyridinic-N group was increased with an increased temperature. The pyrrolic-N significantly enhanced CO{sub 2} adsorption. The ammonia treatment, on the one hand, increases the alkalinity of ZC sample and the base–acid interaction between N-containing functional groups with CO{sub 2}. On the other hand, the ammonia treatment increased pyrrolic-N group (NH) into carbon surface facilitating the hydrogen-bonding interactions between proton of pyrrolic-N and CO{sub 2} molecules.

  4. Administration of Zinc plus Cyclo-(His-Pro) Increases Hippocampal Neurogenesis in Rats during the Early Phase of Streptozotocin-Induced Diabetes

    Science.gov (United States)

    Choi, Bo Young; Kim, In Yeol; Kim, Jin Hee; Lee, Bo Eun; Lee, Song Hee; Kho, A Ra; Sohn, Min; Suh, Sang Won

    2017-01-01

    The effects of zinc supplementation on hippocampal neurogenesis in diabetes mellitus have not been studied. Herein, we investigated the effects of zinc plus cyclo-(His-Pro) (ZC) on neurogenesis occurring in the subgranular zone of dentate gyrus after streptozotocin (STZ)-induced diabetes. ZC (27 mg/kg) was administered by gavage once daily for one or six weeks from the third day after the STZ injection, and histological evaluation was performed at 10 (early phase) or 45 (late phase) days after STZ injection. We found that the proliferation of progenitor cells in STZ-induced diabetic rats showed an increase in the early phase. Additionally, ZC treatment remarkably increased the number of neural progenitor cells (NPCs) and immature neurons in the early phase of STZ-induced diabetic rats. Furthermore, ZC treatment showed increased survival rate of newly generated cells but no difference in the level of neurogenesis in the late phase of STZ-induced diabetic rats. The present study demonstrates that zinc supplementation by ZC increases both NPCs proliferation and neuroblast production at the early phase of diabetes. Thus, this study suggests that zinc supplemented with a histidine/proline complex may have beneficial effects on neurogenesis in patients experiencing the early phase of Type 1 diabetes. PMID:28045430

  5. Extreme diving of beaked whales.

    Science.gov (United States)

    Tyack, Peter L; Johnson, Mark; Soto, Natacha Aguilar; Sturlese, Albert; Madsen, Peter T

    2006-11-01

    Sound-and-orientation recording tags (DTAGs) were used to study 10 beaked whales of two poorly known species, Ziphius cavirostris (Zc) and Mesoplodon densirostris (Md). Acoustic behaviour in the deep foraging dives performed by both species (Zc: 28 dives by seven individuals; Md: 16 dives by three individuals) shows that they hunt by echolocation in deep water between 222 and 1885 m, attempting to capture about 30 prey/dive. This food source is so deep that the average foraging dives were deeper (Zc: 1070 m; Md: 835 m) and longer (Zc: 58 min; Md: 47 min) than reported for any other air-breathing species. A series of shallower dives, containing no indications of foraging, followed most deep foraging dives. The average interval between deep foraging dives was 63 min for Zc and 92 min for Md. This long an interval may be required for beaked whales to recover from an oxygen debt accrued in the deep foraging dives, which last about twice the estimated aerobic dive limit. Recent reports of gas emboli in beaked whales stranded during naval sonar exercises have led to the hypothesis that their deep-diving may make them especially vulnerable to decompression. Using current models of breath-hold diving, we infer that their natural diving behaviour is inconsistent with known problems of acute nitrogen supersaturation and embolism. If the assumptions of these models are correct for beaked whales, then possible decompression problems are more likely to result from an abnormal behavioural response to sonar.

  6. Easy on-demand single-pass self-assembly and modification to fabricate gold@graphene-based anti-inflammatory nanoplatforms

    Science.gov (United States)

    Byeon, Jeong Hoon; Park, Jae Hong

    2016-10-01

    Zwitterionic chitosan (ZC) was modified by fully (both for lateral dimension and thickness) nanodimensional gold-graphene oxide (Au@GO) flakes under visible light and the potential of the resulting materials as biomedical nanoplatforms was investigated. Fully nanodimensional GO flakes floating in nitrogen gas were incorporated with Au nanoparticles to form Au@GO nanoflakes, and the Au@GO was then incorporated with ZC droplets to form the Au@GO-ZC hybrid nanoparticles. The collected particles were exposed to visible light to induce the photocatalytic activity of the Au@GO nanoflakes towards the ZC derivatives. The visible-light-exposed particles show different chemical and surface properties from the unexposed particles, while there were no significant differences in cytotoxicity and macrophage inflammatory protein production. This work suggests that incorporating fully nanodimensional Au@GO flakes with ZC is a suitable technique for ambient photo-modification of the chitosans’ surface property without significant changes in size and shape and increases in cytotoxicity and inflammatory response.

  7. Administration of Zinc plus Cyclo-(His-Pro Increases Hippocampal Neurogenesis in Rats during the Early Phase of Streptozotocin-Induced Diabetes

    Directory of Open Access Journals (Sweden)

    Bo Young Choi

    2017-01-01

    Full Text Available The effects of zinc supplementation on hippocampal neurogenesis in diabetes mellitus have not been studied. Herein, we investigated the effects of zinc plus cyclo-(His-Pro (ZC on neurogenesis occurring in the subgranular zone of dentate gyrus after streptozotocin (STZ-induced diabetes. ZC (27 mg/kg was administered by gavage once daily for one or six weeks from the third day after the STZ injection, and histological evaluation was performed at 10 (early phase or 45 (late phase days after STZ injection. We found that the proliferation of progenitor cells in STZ-induced diabetic rats showed an increase in the early phase. Additionally, ZC treatment remarkably increased the number of neural progenitor cells (NPCs and immature neurons in the early phase of STZ-induced diabetic rats. Furthermore, ZC treatment showed increased survival rate of newly generated cells but no difference in the level of neurogenesis in the late phase of STZ-induced diabetic rats. The present study demonstrates that zinc supplementation by ZC increases both NPCs proliferation and neuroblast production at the early phase of diabetes. Thus, this study suggests that zinc supplemented with a histidine/proline complex may have beneficial effects on neurogenesis in patients experiencing the early phase of Type 1 diabetes.

  8. THE IMPACT OF INITIAL FORCED WIND ON THE PREDICTABILITY OF THE ZEBIAK-CANE COUPLED OCEAN-ATMOSPHERE MODEL

    Institute of Scientific and Technical Information of China (English)

    YUE Cai-jun; LU Wei-song; LI Qing-quan

    2006-01-01

    With simultaneous observed sea surface temperature anomaly (SSTA), the difference between NCEP/NCAR 925hPa reanalysis wind stress anomaly (NCEPWSA) and FSU wind stress anomaly (FSUWSA) is analyzed, and the prediction abilities of Zebiak-Cane coupled ocean-atmosphere model (ZC coupled model) with NCEPWSA and FSUWSA serving respectively as initialization wind are compared. The results are as follows.The distribution feature of NCEPWSA matches better with that of the observed SSTA than counterpart of FSUWSA both in 1980s and in 1990s; The ZC ocean model has a better skill under the forcing of NCEPWSA than that of FSUWSA, especially in 1990s. Meanwhile, the forecast abilities of the ZC coupled model in 1990s as well as in 1980s have been improved employing NCEPWSA as initialization wind instead of FSUWSA.Particularly, it succeeded in predicting 1997/1998 El Ni(n)o 6 to 8 months ahead; further analysis shows that on the antecedent and onset stages of the 1997/1998 El Ni(n)o event, the horizontal cold and warm distribution characteristics of the simulated SSTA from ZC ocean model, with NCEPWSA forcing compared to FSUWSA forcing, match better with counterparts of the corresponding observed SSTA, whereby providing better predication initialization conditions for ZC coupled model, which, in turn, is favorable to improve the forecast ability of the coupled model.

  9. THE EFFICIENCY OF VOCABULARY TEACHING METHODS IN TURKİSH LANGUAGE TEACHING

    OpenAIRE

    Şükran DİLİDÜZGÜN

    2014-01-01

    İletişimin tam olarak gerçekleşebilmesi göndericinin düşüncelerini alıcıya tam olarak aktarabileceği sözcükleri bilme/kullanma yeterliliğini gerektirir. Sözcük dağarcığı ne kadar genişse insanın kendini anlatma ve iletileri anlayabilme yetisi o kadar gelişmiştir. Günlük yaşamda hayatı devam ettirebilecek sayıda sözcük kullanılır. İnsanlar; bilişsel gelişimleri ve entelektüel düşünebilmeleri için kurumsal boyutta, kavram alanlarını genişletici bir eğitime gereksinim duyarlar. Dil derslerinde d...

  10. Study of baryon acoustic oscillations with SDSS DR12 data and measurement of $\\Omega_\\textrm{DE}(a)$

    CERN Document Server

    Hoeneisen, B

    2016-01-01

    We define Baryon Acoustic Oscillation (BAO) distances $\\hat{d}_\\alpha(z, z_c)$, $\\hat{d}_z(z, z_c)$, and $\\hat{d}_/(z, z_c)$ that do not depend on cosmological parameters. These BAO distances are measured as a function of redshift $z$ with the Sloan Digital Sky Survey (SDSS) data release DR12. From these BAO distances alone, or together with the correlation angle $\\theta_\\textrm{MC}$ of the Cosmic Microwave Background (CMB), we constrain the cosmological parameters in several scenarios. We find $4.3 \\sigma$ tension between the BAO plus $\\theta_\\textrm{MC}$ data and a cosmology with flat space and constant dark energy density $\\Omega_\\textrm{DE}(a)$. Releasing one and/or the other of these constraints obtains agreement with the data. We measure $\\Omega_\\textrm{DE}(a)$ as a function of $a$.

  11. Phenomenological implications of the intrinsic charm in the $Z$ boson production at the LHC

    CERN Document Server

    Bailas, G

    2015-01-01

    In this paper we study the $Z$, $Z+$ jet, $Z+c$ and $Z+c+$ jet production in $pp$ collisions at the LHC considering different models for an intrinsic charm content of the proton. We analyse the impact of the intrinsic charm in the rapidity and transverse momentum distributions for these different processes. Our results indicated that differently from the other processes, the $Z+c$ cross section is strongly affected by the presence of the intrinsic charm. Moreover, we propose the analysis of the ratios $R(Z+c/Z) \\equiv \\sigma(Z+c)/\\sigma(Z)$ and $R(Z+c/Z+\\mbox{jet}) \\equiv \\sigma(Z+c)/\\sigma(Z+\\mbox{jet})$ and demonstrate that these observables can be used as a probe of the intrinsic charm.

  12. 紫外交联合并串联亲和纯化高效鉴定蛋白复合物组分的RNA结合活性%Efficient Assay of The RNA-binding Activities in a Protein Complex by UV Cross-linking and Tandem Affinity Purification

    Institute of Scientific and Technical Information of China (English)

    岳莎; 周淑如; 郭学敏

    2014-01-01

    RNA结合蛋白在RNA的生成与代谢中发挥着重要作用.我们在近年报道的PAR-CLIP (photoactivatableribonucleoside-enhanced crosslinking and immunoprecipitation)技术的基础上建立了一套快速、有效鉴定RNA结合蛋白的实验方法:以串联亲和纯化替代一步免疫沉淀获得高纯度蛋白-RNA复合物;将Sypro Ruby蛋白染色与RNA放射自显影相结合判断复合物中哪种或哪些组分为RNA结合蛋白,该方法命名为紫外交联合并的串联亲和纯化(cross-linking and tandem affinity purification,CLiTAP).运用该方法对布氏锥虫的三种锌指蛋白ZC3H7、ZC3H34和ZC3H5进行分析,发现ZC3H7作为帽结合蛋白复合物的核心组分具有很强的RNA结合能力;ZC3H34结合RNA能力较弱,但其互作蛋白具有强的RNA结合活性;相比之下,ZC3H5及其复合物组分皆无RNA结合活性.这些结果表明,CLiTAP与蛋白质鉴定方法相结合,能够有效鉴定靶蛋白复合物中的RNA结合蛋白种类,也为进一步定位RNA结合位点、研究RNA结合蛋白的结构及作用机制奠定了基础.%RNA-binding proteins (RBPs) function importantly in RNA synthesis and metabolism by interacting with specific RNAs.The identification of RNA-protein interactions is required for understanding the cellular function mechanisms.A new technique,PAR-CLIP (photoactivatable-ribonucleoside-enhanced crosslinking and immunoprecipitation),has been used to determine the target transcripts of a few RBPs and map the RNA binding sites in a genome-wide fashion.In this study,a rapid and effective method was developed on the basis of PAR-CLIP to detect the RNA binding activity of putative RBPs and their complexes,termed UV cross-linking and tandem affinity purification (CLiTAP).The improvements include:(1) Tandem affinity purification was performed to purify RNA-protein complexes efficiently; (2) Sypro Ruby staining and autoradiography were used sequentially to determine which protein(s) possessing RNA

  13. Observation of a new charged charmonium-like state in B -> J/psi K pi decays

    CERN Document Server

    Chilikin, K; Adachi, I; Aihara, H; Said, S Al; Arinstein, K; Asner, D M; Aulchenko, V; Aushev, T; Ayad, R; Aziz, T; Bakich, A M; Bansal, V; Bondar, A; Bonvicini, G; Bozek, A; Bračko, M; Browder, T E; Červenkov, D; Chekelian, V; Chen, A; Cheon, B G; Chistov, R; Cho, K; Chobanova, V; Choi, S -K; Choi, Y; Cinabro, D; Danilov, M; Doležal, Z; Drásal, Z; Drutskoy, A; Dutta, K; Eidelman, S; Epifanov, D; Farhat, H; Fast, J E; Ferber, T; Frost, O; Gaur, V; Gabyshev, N; Ganguly, S; Garmash, A; Gillard, R; Goh, Y M; Golob, B; Grzymkowska, O; Haba, J; Hara, T; Hayasaka, K; Hayashii, H; He, X H; Hou, W -S; Huschle, M; Hyun, H J; Ishikawa, A; Itoh, R; Iwasaki, Y; Jaegle, I; Joo, K K; Julius, T; Kawasaki, T; Kiesling, C; Kim, D Y; Kim, H J; Kim, J H; Kim, M J; Kim, Y J; Kinoshita, K; Ko, B R; Korpar, S; Križan, P; Krokovny, P; Kuhr, T; Kuzmin, A; Kwon, Y -J; Lange, J S; Li, Y; Gioi, L Li; Libby, J; Liu, Y; Liventsev, D; Lukin, P; Miyabayashi, K; Miyata, H; Mohanty, G B; Moll, A; Mori, T; Mussa, R; Nakano, E; Nakao, M; Nanut, T; Natkaniec, Z; Nedelkovska, E; Nisar, N K; Nishida, S; Ogawa, S; Okuno, S; Pakhlov, P; Pakhlova, G; Park, C W; Park, H; Pedlar, T K; Petrič, M; Piilonen, L E; Ribežl, E; Ritter, M; Rostomyan, A; Sakai, Y; Sandilya, S; Santelj, L; Sanuki, T; Sato, Y; Savinov, V; Schneider, O; Schnell, G; Schwanda, C; Seon, O; Shebalin, V; Shen, C P; Shibata, T -A; Shiu, J -G; Shwartz, B; Sibidanov, A; Simon, F; Sohn, Y -S; Sokolov, A; Solovieva, E; Starič, M; Steder, M; Sumisawa, K; Sumiyoshi, T; Tamponi, U; Tanida, K; Tatishvili, G; Teramoto, Y; Thorne, F; Trabelsi, K; Uchida, M; Uehara, S; Uglov, T; Unno, Y; Uno, S; Urquijo, P; Van Hulse, C; Vanhoefer, P; Varner, G; Vinokurova, A; Wagner, M N; Wang, C H; Wang, M -Z; Wang, P; Wang, X L; Watanabe, Y; Wehle, S; Williams, K M; Won, E; Yamaoka, J; Yashchenko, S; Zhang, Z P; Zhilich, V; Zhulanov, V; Zupanc, A

    2014-01-01

    We present the results of an amplitude analysis of B0 -> J/psi K+ pi- decays. A new charged charmonium-like state Zc(4200)+ decaying to J/psi pi+ is observed with a significance of 6.2 sigma. The mass and width of the Zc(4200)+ are 4196 +31-29 +17-13 MeV/c^2 and 370 +70-70 +70-132 MeV, respectively; the preferred assignment of the quantum numbers is J^P = 1^+. In addition, we find evidence for Zc(4430)+ -> J/psi pi+. The analysis is based on a 711 fb^-1 data sample collected by the Belle detector at the asymmetric-energy e+ e- collider KEKB.

  14. Identification and characterization of the soybean IPK1 ortholog of a low phytic acid mutant reveals an exon-excluding splice-site mutation.

    Science.gov (United States)

    Yuan, Feng-Jie; Zhu, Dan-Hua; Tan, Yuan-Yuan; Dong, De-Kun; Fu, Xu-Jun; Zhu, Shen-Long; Li, Bai-Quan; Shu, Qing-Yao

    2012-11-01

    Phytic acid (myo-inositol 1, 2, 3, 4, 5, 6 hexakisphosphate) is an important constituent of soybean meal. Since phytic acid and its mineral salts (phytates) are almost indigestible for monogastrics, their abundance in grain food/feed causes nutritional and environmental problems; interest in breeding low phytic acid has therefore increased considerably. Based on gene mapping and the characteristics of inositol polyphosphates profile in the seeds of a soybean mutant line Gm-lpa-ZC-2, the soybean ortholog of inositol 1,3,4,5,6 pentakisphosphate (InsP(5)) 2-kinase (IPK1), which transforms InsP(5) into phytic acid, was first hypothesized as the candidate gene responsible for the low phytic acid alteration in Gm-lpa-ZC-2. One IPK1 ortholog (Glyma14g07880, GmIPK1) was then identified in the mapped region on chromosome 14. Sequencing revealed a G → A point mutation in the genomic DNA sequence and the exclusion of the entire fifth exon in the cDNA sequence of GmIPK1 in Gm-lpa-ZC-2 compared with its wild-type progenitor Zhechun No. 3. The excluded exon encodes 37 amino acids that spread across two conserved IPK1 motifs. Furthermore, complete co-segregation of low phytic acid phenotype with the G → A mutation was observed in the F(2) population of ZC-lpa x Zhexiandou No. 4 (a wild-type cultivar). Put together, the G → A point mutation affected the pre-mRNA splicing and resulted in the exclusion of the fifth exon of GmIPK1 which is expected to disrupt the GmIPK1 functionality, leading to low phytic acid level in Gm-lpa-ZC-2. Gm-lpa-ZC-2, would be a good germplasm source in low phytic acid soybean breeding.

  15. Zadoff-Chu sequence-based hitless ranging scheme for OFDMA-PON configured 5G fronthaul uplinks

    Science.gov (United States)

    Reza, Ahmed Galib; Rhee, June-Koo Kevin

    2017-05-01

    A Zadoff-Chu (ZC) sequence-based low-complexity hitless upstream time synchronization scheme is proposed for an orthogonal frequency division multiple access passive optical network configured cloud radio access network fronthaul. The algorithm is based on gradual loading of the ZC sequences, where the phase discontinuity due to the cyclic prefix is alleviated by a frequency domain phase precoder, eliminating the requirements of guard bands to mitigate intersymbol interference and inter-carrier interference. Simulation results for uncontrolled-wavelength asynchronous transmissions from four concurrent transmitting optical network units are presented to demonstrate the effectiveness of the proposed scheme.

  16. On the (In)Equivalence of Impossible Differential and Zero-Correlation Distinguishers for Feistel- and Skipjack-Type Ciphers

    DEFF Research Database (Denmark)

    Blondeau, Celine; Bogdanov, Andrey; Wang, Meiqin

    2014-01-01

    significant.At EUROCRYPT'13, a link between these two distinguishers has been presented. However, though being independent of the underling structure of the cipher, it is usually not useful for most known ID or ZC distinguishers. So despite the relevance of those attacks, the question of their equivalence...... or inequivalence has not been formally addressed so far in a constructive practical way.In this paper, we aim to bridge this gap in the understanding of the links between the ID and ZC properties. We tackle this problem at the example of two wide classes of ciphers, namely, Feistel- and Skipjack-type ciphers...

  17. Variables related to surgical and nonsurgical treatment of zygomatic complex fracture.

    Science.gov (United States)

    Olate, Sergio; Lima, Sergio Monteiro; Sawazaki, Renato; Moreira, Roger William Fernandez; de Moraes, Márcio

    2011-07-01

    The aim of this retrospective research was to establish the association between variables for the surgical treatment of zygomatic complex (ZC) fractures. In a 10-year period, 532 patients were examined for ZC fractures. The medical records of patients were analyzed to obtain information related to sociodemographic characteristics, trauma etiology, sign and symptoms of patients, and surgical or nonsurgical treatment. Statistical analysis was performed using χ test with statistical significance of P complex variables can be associated to surgical treatment; however, variables as comminuted fracture and alteration of occlusion were associated to surgical treatment indications.

  18. A direct probe of the intrinsic charm content of the proton

    CERN Document Server

    Boettcher, Tom; Williams, Mike

    2015-01-01

    Measurement of $Z$ bosons produced in association with charm jets $(Zc)$ in proton-proton collisions in the forward region provides a direct probe of a potential non-perturbative (intrinsic) charm component in the proton wave function. We provide a detailed study of the potential to measure $Zc$ production at the LHCb experiment in Runs 2 and 3 of the LHC. The sensitivity to valence-like (sea-like) intrinsic charm is predicted to be $\\langle x \\rangle_{\\rm IC} \\gtrsim 0.3\\%(1\\%)$. The impact of intrinsic charm on Higgs production at the LHC, including $Hc$, is also discussed in detail.

  19. Statistical mechanics of two hard spheres in a box.

    Science.gov (United States)

    Uranagase, Masayuki; Munakata, Toyonori

    2006-12-01

    We investigate some statistical mechanical properties of a system consisting of two hard spheres in a D-dimensional rectangular box (D=1, 2, ...). We give a theoretical method for computing a configurational partition function Zc,D of this system and compare the equation of state obtained from Zc,D with molecular dynamics simulations. Especially in D=3, we give a fully analytic expression for the pressure which turns out to have one or more negative compressibility regions when the box size is small.

  20. The long memory and the transaction cost in financial markets

    Science.gov (United States)

    Li, Daye; Nishimura, Yusaku; Men, Ming

    2016-01-01

    In the present work, we investigate the fractal dimensions of 30 important stock markets from 2006 to 2013; the analysis indicates that the Hurst exponent of emerging markets shifts significantly away from the standard Brownian motion. We propose a model based on the Hurst exponent to explore the considerable profits from the predictable long-term memory. We take the transaction cost into account to justify why the market inefficiency has not been arbitraged away in the majority of cases. The empirical evidence indicates that the majority of the markets are efficient with a certain transaction cost under the no-arbitrage assumption. Furthermore, we use the Monte Carlo simulation to display "the efficient frontier" of the Hurst exponent with different transaction costs.

  1. Inhomogeneous scaling behaviors in Malaysian foreign currency exchange rates

    Science.gov (United States)

    Muniandy, S. V.; Lim, S. C.; Murugan, R.

    2001-12-01

    In this paper, we investigate the fractal scaling behaviors of foreign currency exchange rates with respect to Malaysian currency, Ringgit Malaysia. These time series are examined piecewise before and after the currency control imposed in 1st September 1998 using the monofractal model based on fractional Brownian motion. The global Hurst exponents are determined using the R/ S analysis, the detrended fluctuation analysis and the method of second moment using the correlation coefficients. The limitation of these monofractal analyses is discussed. The usual multifractal analysis reveals that there exists a wide range of Hurst exponents in each of the time series. A new method of modelling the multifractal time series based on multifractional Brownian motion with time-varying Hurst exponents is studied.

  2. Decomposing intraday dependence in currency markets: evidence from the AUD/USD spot market

    Science.gov (United States)

    Batten, Jonathan A.; Ellis, Craig A.; Hogan, Warren P.

    2005-07-01

    The local Hurst exponent, a measure employed to detect the presence of dependence in a time series, may also be used to investigate the source of intraday variation observed in the returns in foreign exchange markets. Given that changes in the local Hurst exponent may be due to either a time-varying range, or standard deviation, or both of these simultaneously, values for the range, standard deviation and local Hurst exponent are recorded and analyzed separately. To illustrate this approach, a high-frequency data set of the spot Australian dollar/US dollar provides evidence of the returns distribution across the 24-hour trading ‘day’, with time-varying dependence and volatility clearly aligning with the opening and closing of markets. This variation is attributed to the effects of liquidity and the price-discovery actions of dealers.

  3. Long-range correlations and nonstationarity in the Brazilian stock market

    Science.gov (United States)

    Costa, Rogério L.; Vasconcelos, G. L.

    2003-11-01

    We report an empirical study of the Ibovespa index of the São Paulo Stock Exchange in which we detect the existence of long-range correlations. To analyze our data, we introduce a rescaled variant of the usual detrended fluctuation analysis that allows us to obtain the Hurst exponent through a one-parameter fitting. We also compute a time-dependent Hurst exponent H( t) using 3-year moving time windows. In particular, we find that before the launch of the Collor Plan in 1990 the curve H( t) remains, in general, well above {1}/{2}, while afterwards it stays close to {1}/{2}. We thus argue that the structural reforms set off by the Collor Plan has lead to a more efficient stock market in Brazil. We also suggest that the time dependence of the Ibovespa Hurst exponent could be described in terms of a multifractional Brownian motion.

  4. Some stylized facts of the Bitcoin market

    Science.gov (United States)

    Bariviera, Aurelio F.; Basgall, María José; Hasperué, Waldo; Naiouf, Marcelo

    2017-10-01

    In recent years a new type of tradable assets appeared, generically known as cryptocurrencies. Among them, the most widespread is Bitcoin. Given its novelty, this paper investigates some statistical properties of the Bitcoin market. This study compares Bitcoin and standard currencies dynamics and focuses on the analysis of returns at different time scales. We test the presence of long memory in return time series from 2011 to 2017, using transaction data from one Bitcoin platform. We compute the Hurst exponent by means of the Detrended Fluctuation Analysis method, using a sliding window in order to measure long range dependence. We detect that Hurst exponents changes significantly during the first years of existence of Bitcoin, tending to stabilize in recent times. Additionally, multiscale analysis shows a similar behavior of the Hurst exponent, implying a self-similar process.

  5. AN INTELLIGENT METHOD FOR REAL-TIME DETECTION OF DDOS ATTACK BASED ON FUZZY LOGIC

    Institute of Scientific and Technical Information of China (English)

    Wang Jiangtao; Yang Geng

    2008-01-01

    The paper puts forward a variance-time plots method based on slide-window mechanism to calculate the Hurst parameter to detect Distribute Denial of Service (DDoS) attack in real time. Based on fuzzy logic technology that can adjust itself dynamically under the fuzzy rules, an intelligent DDoS judgment mechanism is designed. This new method calculates the Hurst parameter quickly and detects DDoS attack in real time. Through comparing the detecting technologies based on statistics and feature-packet respectively under different experiments, it is found that the new method can identify the change of the Hurst parameter resulting from DDoS attack traffic with different intensities, and intelligently judge DDoS attack self-adaptively in real time.

  6. Has the 2008 financial crisis affected stock market efficiency? The case of Eurozone

    Science.gov (United States)

    Anagnostidis, P.; Varsakelis, C.; Emmanouilides, C. J.

    2016-04-01

    In this paper, the impact of the 2008 financial crisis on the weak-form efficiency of twelve Eurozone stock markets is investigated empirically. Efficiency is tested via the Generalized Hurst Exponent method, while dynamic Hurst exponents are estimated by means of the rolling window technique. To account for biases associated with the finite sample size and the leptokurtosis of the financial data, the statistical significance of the Hurst exponent estimates is assessed through a series of Monte-Carlo simulations drawn from the class of α-stable distributions. According to our results, the 2008 crisis has adversely affected stock price efficiency in most of the Eurozone capital markets, leading to the emergence of significant mean-reverting patterns in stock price movements.

  7. İNGİLİZCE’NİN YABANCI DİL OLARAK ÖĞRETİMİ BAĞLAMINDA ORTAÖĞRETİM 10. SINIF ÖĞRENCİLERİNİN RASTLANTISAL VE ÖĞRETİM YOLUYLA SÖZCÜK ÖĞRENME SÜREÇLERİNE İLİŞKİN BİR UYGULAMA

    OpenAIRE

    DEBBAĞ ERGİN, Derya

    2008-01-01

    Debbağ Ergin, Derya, İngilizce’nin Yabancı Dil Olarak Öğretimi Bağlamında Ortaöğretim 10. Sınıf Öğrencilerinin Rastlantısal ve Öğretim Yoluyla Sözcük Öğrenme Süreçlerine İlişkin Bir Uygulama, Yüksek Lisans Tezi, Danışman Yrd. Doç. Dr. Seda Gökmen, 121 s. TÜRKÇE ÖZET Çalışmamızın konusunu, rastlantısal ve öğretim yoluyla sözcük öğrenmenin nasıl gerçekleştiğinin incelendiği kuramsal bir çerçeve ve rastlantısal ve öğretim yoluyla sözcük öğrenme süreçleri sonunda 10. sınıf öğrencilerinin sözcük b...

  8. ABSTRACTS

    Institute of Scientific and Technical Information of China (English)

    2012-01-01

    Effect of Coolant Temperature on Fuel Consumption and Emissions in YC6A220C Diesel Engine;Optimizing NOx emission performance for 16V280ZC diesel engine;CA3-13 coupler of DFsBI diesel locomotive exported to Iran;Mixed traction technology with LOCOTROL system;

  9. New results on the XYZ states from Belle experiment

    CERN Document Server

    ,

    2015-01-01

    We review the results on the XYZ states from the Belle experiment, including the measurement of inclusive hadronic cross sections and exclusive cross sections in e+e- annihilation and the Z_b states in the bottomonium energy region; and the study of the Y states and the Z_c states in charmonium energy region.

  10. MCPIP1 RNase Is Aberrantly Distributed in Psoriatic Epidermis and Rapidly Induced by IL-17A.

    Science.gov (United States)

    Ruiz-Romeu, Ester; Ferran, Marta; Giménez-Arnau, Ana; Bugara, Beata; Lipert, Barbara; Jura, Jolanta; Florencia, Edwin F; Prens, Errol P; Celada, Antonio; Pujol, Ramon M; Santamaria-Babí, Luis F

    2016-08-01

    ZC3H12A, which encodes the RNase monocyte chemotactic protein-induced protein 1 (MCPIP1), is up-regulated in psoriatic skin and reduced to normal levels after clinical treatments with anti-IL-17A/IL-17R neutralizing antibodies. In IL-17A-stimulated keratinocytes, MCPIP1 is rapidly increased at the transcript and protein levels. Also, IL-17A was found to be the main inducer of ZC3H12A expression in keratinocytes treated with supernatants derived from a Streptococcus pyogenes-activated psoriatic ex vivo model based on the co-culture of psoriatic cutaneous lymphocyte-associated antigen (CLA(+)) T cells and lesional epidermal cells. Moreover, MCPIP1 was aberrantly distributed in the suprabasal layers of psoriatic epidermis. In psoriatic samples, IL-17A-stimulated epidermal cell suspensions showed an increased MCPIP1 expression, especially in the mid-differentiated cellular compartment. The knockdown of ZC3H12A showed that this RNase participates in the regulation of the mRNAs present in suprabasal differentiated keratinocytes. Furthermore, JAK/STAT3 inhibition prevented the IL-17A-dependent induction of MCPIP1. In the mouse model of imiquimod-induced psoriasis, Zc3h12a expression was abrogated in Il17ra(-/-) mice. These results support the notion that IL-17A-mediated induction of MCPIP1 is involved in the regulation of local altered gene expression in suprabasal epidermal layers in psoriasis.

  11. Effect of the catalyzing combustion of coke breeze on the energy saving in sinter process

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The mechanism of additive ZC-1 for catalyzing combustion of coke breeze in sintering of iron one fines was studied by using X-ray Diffraction, TGA and GC (Gas Chromatographer), by which energy saving was achieved on sinter pot test. The results show that the distance between cleavage planes is enlarged and the π-electrons are re-distibuted because of the insertion of cations/molecules of ZC-1 into the cleavage planes of carbon , resulting in the weakening of C-C bond, improving the adsorption of oxygen and lowering the activation energy of gasification of carbon from 25.8 kJ/mol to 18.9 kJ/mol , and the burning rate being increased and combustion residual reduced, all of which can lead to lower solid fuel consumption . Compared with the sintering test without addition of additives , the solid fuel consumption is reduced by 16.0%, meanwhile, the rate of finished sinter, the output of finished sinter and the tumbling index are increased by 2.03%, 7.0% and 3.71%, respectively, with incorporating 0.2% of additive ZC-1 in the sintering mixture, which is in agreement with the catalyzing mechanism of ZC-1.

  12. A preliminary evaluation of lake morphometric traits influence on the maximum growing depth of macrophytes

    Directory of Open Access Journals (Sweden)

    Mattia M. Azzella

    2014-03-01

    Full Text Available Underwater light regime is widely considered the principal determinant of aquatic plant depth distribution. The majority of previous studies dealing with macrophytes in lakes have singled out Secchi disk transparency (SD values as the key empirical proxy to explain the maximum depth of macrophyte colonization (Zc. Few studies have investigated the role played by lake morphometry in structuring macrophyte beds. Using a balanced dataset including 20 Italian lakes (10 shallow and 10 deep lakes, we analysed transparency and lake morphometric traits to investigate their possible effects on Zc. Our results demonstrate that lake area plays a significant role, and confirm a direct influence of SD values on Zc. Considering lakes with an equal degree of transparency, smaller lakes may yield a lower Zc than larger ones. Morphology has a great influence on lake ecological characteristics especially on water thermal conditions and mixing depth. Based on our data, we argue that the thermal stratification plays a non negligible role in explaining macrophytes zonation, due to its influence on macrophytes life cycles and phytoplankton vertical distribution. Therefore, the present data suggest the need to enhance and refine our knowledge about the relationship between aquatic plants distribution and lake thermal conditions to better model the response of macrophytes to climate change and eutrophication.

  13. AcEST: BP919062 [AcEST

    Lifescience Database Archive (English)

    Full Text Available ... 34 0.39 sp|Q11DY9|SECA_MESSB Protein translocase subunit secA OS=Mesorhi... 33 0.87 sp|Q5T200|ZC3HD_HUMA...EEEWALAKKQELEAAKKQNAEKRKLIFNRAKQYSKEY 57 >sp|Q11DY9|SECA_MESSB Protein translocase subunit secA OS=Mesorhizo

  14. A simple and efficient procedure to enhance artemisinin content in ...

    African Journals Online (AJOL)

    SERVER

    2007-06-18

    Jun 18, 2007 ... harvesting of A. annua can influence artemisinin produc- tion in A. annua ... watered by normal nutrient solution (33 mg/l NH4NO3, 38 mg/l. KNO3, 8.8 mg/l ..... Res. 1: 15-25. Xie DY, Zou ZR, Ye HC, Li GF, Guo ZC (2001).

  15. 汽车零件

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Application of tube hydroforming to automotive parts,Applied investigation of Bio-Plastics,Automotive applications of magnesium alloys, AZ80 and ZC71/SiC/12p closed die forgings for automotive applications: technical and economic assessment of possible mass production,Burnishing versus grinding for automotive parts,CAD-Guided Sensor Planning for Dimensional Inspection in Automotive Manufacturing。

  16. Non-destructive NIR detection of Zebra Chip disease in whole potatoes (abstract)

    Science.gov (United States)

    Potatoes are the 4th biggest food crop worldwide and the leading vegetable crop in the U.S., accounting for 15 percent of vegetable sales. Over 50% of potatoes are consumed as processed products such as French fries and chips. Zebra Chip (ZC) is a disease of potatoes that causes brown discoloration ...

  17. Characterization of management and environmental factors associated with regional variations in potato zebra chip occurrence

    Science.gov (United States)

    Potato zebra chip (ZC) disease, putatively caused by the bacterial pathogen ‘Candidatus Liberibacter solanacearum’, which is vectored by the potato psyllid (Bactericera cockerelli), has caused widespread damage to the US potato production ever since its first discovery in south Texas in 2000. In t...

  18. Test and Evaluation Enhancements for Cognitive Radio Technologies

    Science.gov (United States)

    2015-05-13

    Speed Logic Analyzer o CAD SW: Matlab / Simulink , Agilent ADS & SystemVUE, Ansoft HFSS, Altium o 6-GHz VNA, Spectrum Analyzers, Signal Generators, Noise...ModelSim, Matlab /Simlink o Development Platforms: Kintex KC705, Zynq ZC706, Zedboard, Spartan SP601   RESEARCH IMPACT This instrumentation had a

  19. Variations in Zebra Chip disease expression and tuber biochemistry in response to vector density

    Science.gov (United States)

    This study examined effects of the number of ‘Candidatus Liberibacter solanacearum’ (Lso)-positive psyllids feeding on potatoes to Lso titers, zebra chip disease (ZC) symptom severity, and levels of amino acids, carbohydrates, and phenolics in tubers harvested weeks later. Red La Soda and Russet Nor...

  20. MRSA

    African Journals Online (AJOL)

    Ilse Wittig

    2013-04-24

    Apr 24, 2013 ... Manumycin from a new Streptomyces strain shows antagonistic effect ... cancer cell lines (A549 from lung, HepG2 from liver, MCF-7 from breast, and .... Zhou JM, Zhu XF, Pan QC, Liao DF, Li ZM, Liu ZC (2003). Manumycin.

  1. Binding energies of the lithium isoelectronic sequence approaching the critical charge

    Science.gov (United States)

    Katriel, Jacob; Puchalski, Mariusz; Pachucki, Krzysztof

    2012-10-01

    The Simon-Zhislin-Hunziker theorem implies that Zc, the critical charge below which the three electron atom is not bound, is at most 2. The vanishing electron affinity of He implies that Zc is not less than 2. Hence, Zc=2. To elucidate the approach to the critical charge, we calculated nonrelativistic binding energies for the third electron in the ground state, 1s22s2S, and in the first and second excited states, 1s22p2P and 1s23s2S, for nuclear charges approaching Zc. At this limit the quantum defects for both 2S states are found to approach unity. This implies that the orbital specifying the outer (ns,n=2,3) electron becomes a very diffuse (n-1)s-type orbital, except within the relatively tiny space occupied by the inner two-electron shell. For the 2P state the quantum defect approaches zero both as Z→∞ and as Z→2. An expression for the s-p splitting at Z→2 is suggested, that improves upon earlier results based on energies computed (or measured) at integer values of Z. Rigorous large Z asymptotic expressions for the quantum defects in the 1s2ns2S states are presented, exhibiting the expected mild dependence on the principal quantum number.

  2. General Electromagnetic Model for the Analysis of Complex Systems (GEMACS) Computer Code Documentation (Version 3). Volume 3, Part 3.

    Science.gov (United States)

    1983-09-01

    NII I ,- V *m w m5 \\I ~ SPWDRV (MOM() RINP In-plane reflection coefficient ROUT Out-of-plane reflection coefficient RS Location of wave excitation...SPWDRV (MM) YW Y Component of ZC Z coordinate of field point ZR Z coordinate of specular point ZRSQRT Intermediate value in calculation of RINP and

  3. Modeling the Pollution of Pristine Gas in the Early Universe

    CERN Document Server

    Pan, Liubin; Scalo, John

    2013-01-01

    We conduct a comprehensive theoretical and numerical investigation of the pollution of pristine gas in turbulent flows, designed to provide new tools for modeling the evolution of the first generation of stars. The properties of such Population III (Pop III) stars are thought to be very different than later generations, because cooling is dramatically different in gas with a metallicity below a critical value Z_c, which lies between ~10^-6 and 10^-3 solar value. Z_c is much smaller than the typical average metallicity, , and thus the mixing efficiency of the pristine gas in the interstellar medium plays a crucial role in the transition from Pop III to normal star formation. The small critical value, Z_c, corresponds to the far left tail of the probability distribution function (PDF) of the metallicity. Based on closure models for the PDF formulation of turbulent mixing, we derive equations for the fraction of gas, P, lying below Z_c, in compressible turbulence. Our simulation data shows that the evolution of ...

  4. Pyrosequencing analyses of endophytic bacterial populations in tomato leaves infected by ‘Candidatus Liberibacter solanacearum’

    Science.gov (United States)

    ‘Candidatus Liberibacter solanacearum’ (CLso) is associated with zebra Chip (ZC) disease of potato. The bacterium is currently not culturable and commonly maintained in plant hosts for characterization. In this study, CLso was graft-transmitted to tomato plants. A maximum of over 200-fold increase i...

  5. Quasiuniversal Connectedness Percolation of Polydisperse Rod Systems

    NARCIS (Netherlands)

    Nigro, B.; Grimaldi, C.; Chatterjee, A.P.; van der Schoot, P. P. A. M.

    2013-01-01

    The connectedness percolation threshold (ηc) and critical coordination number (Zc) of systems of penetrable spherocylinders characterized by a length polydispersity are studied by way of Monte Carlo simulations for several aspect ratio distributions. We find that (i) ηc is a nearly universal functio

  6. Recent empirical developments in the study and understanding of XYZ states

    Science.gov (United States)

    Shen, Chengping

    2016-07-01

    Exotic hadronic states beyond the conventional quark model (called charmoniumlike/bottomoniumlike states or XYZ particles) have been searched for and many candidates were proposed including glueballs, hybrids, multi-quark states, hadron molecules, etc. Dramatic progress was made in the study of the exotic states after the running of the two B-factories, i.e., Belle at KEK and BaBar at SLAC. In my review report, I present the most recent results on the study of the XYZ states from the BESIII, Belle, BaBar, LHCb, CMS experiments, etc., including (1) X states: the observation of the X(3872) in e+e- → γX(3872) at around 4.26 GeV; searches for the Xb state; (2) Y states including the updated results for the Y(4008), Y(4260), Y(4360), Y(4660), etc; (3) Z states including the observations of the Z(4430), Z1(4050), Z2(4250), Zc(3900), Zc(4020), Zc(4200); the evidence for the Zc(4050)± → π±ψ(2S); search for the Zcs in e+e- → K+K-J/ψ.

  7. The Conserved, Disease-Associated RNA Binding Protein dNab2 Interacts with the Fragile X Protein Ortholog in Drosophila Neurons

    Directory of Open Access Journals (Sweden)

    Rick S. Bienkowski

    2017-08-01

    Full Text Available The Drosophila dNab2 protein is an ortholog of human ZC3H14, a poly(A RNA binding protein required for intellectual function. dNab2 supports memory and axon projection, but its molecular role in neurons is undefined. Here, we present a network of interactions that links dNab2 to cytoplasmic control of neuronal mRNAs in conjunction with the fragile X protein ortholog dFMRP. dNab2 and dfmr1 interact genetically in control of neurodevelopment and olfactory memory, and their encoded proteins co-localize in puncta within neuronal processes. dNab2 regulates CaMKII, but not futsch, implying a selective role in control of dFMRP-bound transcripts. Reciprocally, dFMRP and vertebrate FMRP restrict mRNA poly(A tail length, similar to dNab2/ZC3H14. Parallel studies of murine hippocampal neurons indicate that ZC3H14 is also a cytoplasmic regulator of neuronal mRNAs. Altogether, these findings suggest that dNab2 represses expression of a subset of dFMRP-target mRNAs, which could underlie brain-specific defects in patients lacking ZC3H14.

  8. Effects of Zn Content on Crystal Structure, Cytocompatibility, Antibacterial Activity, and Chemical Stability in Zn-Modified Calcium Silicate Coatings

    Science.gov (United States)

    Li, Kai; Yu, Jiangming; Xie, Youtao; Huang, Liping; Ye, Xiaojian; Zheng, Xuebin

    2013-08-01

    In our previous study, Zn-modified calcium silicate coatings possess not only excellent chemical stability but also well antibacterial activity. Still, effects of zinc content on these properties and cytocompatibility remain unclear. In this paper, two kinds of Zn-modified calcium silicate coatings (ZC0.3, ZC0.5) were fabricated on Ti-6Al-4V substrates via plasma spraying technology. X-ray diffraction results and transmission electron microscopy observations showed that the ZC0.5 coating was composed of pure hardystonite (Ca2ZnSi2O7) phase, while, besides Ca2ZnSi2O7 phase, the amorphous CaSiO3 phase was also detected in the ZC0.3 coating. Chemical stability in Tris-HCl buffer solution and antibacterial activity of the Zn-modified calcium silicate coatings increased with an increase in zinc content. In vitro cytocompatibility evaluation demonstrated that the proliferation and alkaline phosphatase activity and collagen type I (COLI) secretion of osteoblast-like MC3T3-E1 cells on Zn-modified coatings were significantly enhanced compared to the Zn-free coating and Ti-6Al-4V control, and no cytotoxicity appeared on Zn-modified coatings. The better antibacterial activity and the enhanced capability to promote MC3T3-E1 cells differentiation of Zn-modified coatings should be attributed to the slow and constant Zn2+ releasing from the coatings.

  9. 航天诱变混菌生抽发酵研究%Mixed fermentation of soy sauce with space mutant strains

    Institute of Scientific and Technical Information of China (English)

    陈志梅; 张宗舟; 薛林贵; 石小霞; 褚可成

    2011-01-01

    在低盐固态发酵的理论基础上,在传统生抽生产的前提下,利用Aspergillusoryzae 3.045和航天诱变菌株Aspergillus ZM-8、Mucor ZC-11、Rhizopus ZC-6,按不同比例混菌共酵生产生抽.结果表明:100 kg干料、Aspergillus oryzae 3.045添加量1 kg、Aspergillus ZM-8添加量1.5 kg、Mucor ZC-11添加量2 kg、Rhizopus ZC-6添加量2 kg做小曲接种,生抽产量最高为590 kg,高于单菌做小曲接种的生抽产量;同时将产量较高的3个小曲接种配比进行色、香、味、体模糊综合评价,结果表明该配方生产的生抽产品色、香、味、体均好.

  10. The Challenge of Cross-Cultural Assessment--The Test of Ability to Explain for Zulu-Speaking Children

    Science.gov (United States)

    Solarsh, Barbara; Alant, Erna

    2006-01-01

    A culturally appropriate test, The Test of Ability To Explain for Zulu-speaking Children (TATE-ZC), was developed to measure verbal problem solving skills of rural, Zulu-speaking, primary school children. Principles of "non-biased" assessment, as well as emic (culture specific) and etic (universal) aspects of intelligence formed the theoretical…

  11. An Intrusion Alarming System Based on Self- Similarity of Network Traffic

    Institute of Scientific and Technical Information of China (English)

    YU Fei; ZHU Miao-liang; CHEN Yu-feng; LI Ren-fa; XU Cheng

    2005-01-01

    Intrusion detection system can make effective alarm for illegality of network users, which is absolutely necessarily and important to build security environment of communication base service. According to the principle that the number of network traffic can affect the degree of self-similar traffic, the paper investigates the variety of self-similarity resulted from unconventional network traffic. A network traffic model based on normal behaviors of user is proposed and the Hurst parameter of this model can be calculated. By comparing the Hurst parameter of normal traffic and the self-similar parameter, we can judge whether the network is normal or not and alarm in time.

  12. Scattering from Rough Surfaces with Extended Self-Similarity

    Institute of Scientific and Technical Information of China (English)

    张延冬; 吴振森

    2002-01-01

    An extended self-similarity (ESS) model is developed by extending the self-similarity condition in fractional Brownian motion (FBM), then the incremental Fourier synthesis algorithm is introduced to generate ESS rough surfaces, and an estimation algorithm is presented to extract the generalized multiscale Hurst parameter, which can also be modified to estimate the Hurst parameter for FBM more accurately. Finally, the scattering coefficient from ESS rough surfaces is calculated with the scalar Kirchhoff approximation, and its variation with the parameters in the ESS model is obtained. Compared with experimental measurements, it can be concluded that the ESS model provides a good tool to model natural rough surfaces.

  13. On the interplay between short and long term memory in the power-law cross-correlations setting

    Science.gov (United States)

    Kristoufek, Ladislav

    2015-03-01

    We focus on emergence of the power-law cross-correlations from processes with both short and long term memory properties. In the case of correlated error-terms, the power-law decay of the cross-correlation function comes automatically with the characteristics of separate processes. Bivariate Hurst exponent is then equal to an average of separate Hurst exponents of the analyzed processes. Strength of short term memory has no effect on these asymptotic properties. Implications of these findings for the power-law cross-correlations concept are further discussed.

  14. THE WORD düzen IN TERMS OF MORPHOLOGY YAPI BİLGİSİ AÇISINDAN düzen SÖZCÜĞÜ

    Directory of Open Access Journals (Sweden)

    Hakan ÖZDEMİR

    2011-06-01

    Full Text Available In this study the word düzen ‘system’ which is used in Turkey Turkish is discused in terms of morphology. Firstly the situation of word in the grammars is discussed. After denoting of the differents in these sources, it is quested that if there is a relationship between the word and the forms in Old Turkish period. After all of these process the formation of the word is tried to be explained by using the forms which are used in old texts and Anatolian dialects and in light of the foregoing of semantics Bu çalışmada Türkiye Türkçesi alanında kullanılan düzen ‘nizam’ sözcüğü yapı bilgisi açısından ele alınmıştır. Sözcük öncelikle dil bilgisi çalışmalarında nasıl değerlendirilmiş bunun üzerinde duruldu. Bu kaynaklardaki farklılıklar gösterildikten sonra Eski Türkçe döneminde karşılaşılan şekillerle sözcüğün ilgisinin olup olmadığı araştırıldı. Daha sonra anlam bilgisinden de faydalanılarak sözcüğün metinlerde ve ağızlarda karşılaşıldığı şekillerinden hareketle sözcüğün yapısı aydınlığa kavuşturulmaya çalışıldı.

  15. Functional and structural characterization of EnvZ, an osmosensing histidine kinase of E. coli.

    Science.gov (United States)

    Yoshida, Takeshi; Phadtare, Sangita; Inouye, Masayori

    2007-01-01

    EnvZ is an osmosensing histidine kinase located in the inner membrane, and one of the most extensively studied Escherichia coli histidine kinases. Because of its structural complexity, functional and structural studies have been quite challenging. It is a multidomain transmembrane protein consisting of 450 amino acid residues. In addition, it must form a dimer to function as a histidine kinase like all the other histidine kinases. EnvZ consists of the 115-residue periplasmic domain, two transmembrane domains (TM1 and TM2), and the cytoplasmic domain consisting of the 43-residue linker (HAMP) domain and the 228-residue kinase domain. It has been shown that the kinase domain of EnvZ, responsible for its enzymatic activities, contains all of the conserved regions of histidine kinases such as H, F, N, G1, G2, and G3 boxes. Therefore, the 271-residue cytoplasmic domain of EnvZ (termed EnvZc) has been used as a model system to establish fundamental characteristics of histidine kinases. The DNA fragment encoding EnvZc was cloned in pET vector and EnvZc was expressed and purified. It is highly soluble and retains all the enzymatic activities of EnvZ. We demonstrated that it consists of two functional domains, domain A and domain B. NMR spectroscopic studies of these two domains revealed, for the first time, the structure of a histidine kinase. Domain A is responsible for dimerization of EnvZc forming a four-helical bundle containing two alpha-helical hairpin structures, while domain B is a monomer and has an ATP-binding pocket formed by regions conserved among the histidine kinases. In this chapter, we describe functional and structural studies of EnvZc, which can be applied to characterize other histidine kinases.

  16. The application of Nonlinear Local Lyapunov Vectors to the Zebiak-Cane Model and their performance in the Ensemble Prediction

    Science.gov (United States)

    Hou, Zhaolu; Li, Jianping; Ding, Ruiqiang; Feng, Jie

    2017-04-01

    Nonlinear local Lyapunov vectors (NLLVs) have been developed to indicate orthogonal directions in phase space with different error growth rates. Comparing to the breeding vectors (BVs), NLLVs can span the fast-growing perturbation subspace efficiently and may gasp more components in analysis errors than the BVs in the nonlinear dynamical system. Here, NLLVs are employed in the Zebiak-Cane (ZC) atmosphere-ocean coupled model and represent a nonlinear, finite-time extension of the local Lyapunov vectors of the ZC model. The statistical properties of NLLVs is not very sensitive to the choice of the breeding parameter. However, the non-leading NLLVs have some randomness, which increase the diversity of NLLVs. Not only the leading NLLV but also the non-leading NLLVs are flow-dependent and related to the background ENSO evolution of the ZC model in the aspect of spatial structure and error growth rate. the non-leading NLLVs also are the instability direction related to the ENSO process in the ZC model. Due to the non-leading NLLVs, the subspace of the first few NLLVs can describe better the analysis error than that of the same number BVs in the ZC model. NLLVs as initial ensemble perturbations are applied to the ensemble prediction of ENSO and the performance are systematically compared to those of the random perturbation (RP) technique, and the BV method in the prefect environment. The results demonstrate that the RP technique has the worst performance and the NLLVs method is the best in the ensemble forecasts. In particular, the NLLV technique can reduce the "spring barrier" for ENSO prediction further than the other ensemble method.

  17. Metabolite profiling of two novel low phytic acid (lpa) soybean mutants.

    Science.gov (United States)

    Frank, Thomas; Nörenberg, Svenja; Engel, Karl-Heinz

    2009-07-22

    A GC-based approach was applied to compare the metabolite profiles of two low phytic acid (lpa) soybean mutants and their respective wild-types. The lpa mutants (Gm-lpa-TW75-1 and Gm-lpa-ZC-2) were grown together with the wild-types (Taiwan 75 and Zhechun no. 3) in three and four field trials, respectively. HPLC analysis revealed a phytic acid reduction of -53% for Gm-lpa-TW75-1 and of -46% for Gm-lpa-ZC-2. For Gm-lpa-TW75-1, no accumulation of lower inositol phosphates was observed, whereas Gm-lpa-ZC-2 exhibited significantly increased contents of the lower inositol phosphates InsP(3), InsP(4), and InsP(5) compared to the corresponding wild-type. The metabolite profiling revealed that compared to the wild-types, 40% (Gm-lpa-TW75-1) and 21% (Gm-lpa-ZC-2) of the detected peaks were statistically significantly different in the lpa mutants grown at one field trial. However, the majority of these differences were shown to be related to environmental impact and natural variability rather than to the mutation event. Identification of consistent metabolic changes in the lpa mutants revealed decreased contents of myo-inositol, galactinol, raffinose, stachyose, and the galactosyl cyclitols galactopinitol A, galactopinitol B, and fagopyritol B1 compared to the wild-type. These consistently pronounced changes in Gm-lpa-TW75-1 confirmed the suggested mutation target. Consideration of the metabolic changes observed for Gm-lpa-ZC-2 (accumulation of lower inositol phosphates and increased myo-inositol contents) indicated a mutation event affecting the latter biosynthetic steps leading to phytic acid. The study demonstrated the applicability of metabolite profiling for the detection of changes in the metabolite phenotype induced by mutation breeding and its power in assisting in the elucidation of mutation events.

  18. The inhibitory effect of antimicrobial zeolite on the biofilm of Acidithiobacillus thiooxidans.

    Science.gov (United States)

    Haile, Tesfaalem; Nakhla, George

    2010-02-01

    The inhibitory effect of antimicrobial zeolite coated concrete specimens (Z2) against Acidithiobacillus thiooxidans was studied by measuring biomass dry cell weight (DCW), biological sulphate generation, and oxygen uptake rates (OURs). Uncoated (UC), and blank zeolite coated without antimicrobial agent (ZC) concrete specimens were used as controls. The study was undertaken by exposing inoculated basal nutrient medium (BNM) to the various specimens. The coating material was prepared by mixing zeolite, epoxy and cure with ratios, by weight of 2:2:1. Concrete specimens were characterized before and after exposure to inoculated or sterile BNM by field emission-scanning electron microscopy (FE-SEM). Gypsum, which was absent in the other test concrete specimens, was detected in uncoated specimens exposed to the bacterium. In UC and ZC, the growth of the bacteria increased throughout the duration of the experiment. However, significant biomass inhibition was observed in experiments where Z2 was used. The overall biomass growth rate in suspension before the specimens were placed ranged from 3.18 to 3.5 mg DCW day(-1). After the bacterium was exposed to UC and ZC, growth continued with a corresponding value of 4 + or - 0.4 and 5.5 + or - 0.6 mg DCW day(-1), respectively. No biomass growth was observed upon exposure of the bacterium to Z2. Similarly, while biological sulphur oxidation rates in UC and ZC were 88 + or - 13 and 238 + or - 25 mg SO(4)(2-) day(-1), respectively, no sulphate production was observed in experiments where Z2 concrete specimens were used. Peak OURs for UC and ZC ranged from 2.6 to 5.2 mg l(-1) h(-1), and there was no oxygen uptake in those experiments where Z2 was used. The present study revealed that the antimicrobial zeolite inhibits the growth of both planktonic as well as biofilm populations of Acidithiobacillus thiooxidans.

  19. Lumisterol to Tachysterol Photoisomerization in EPA Glass at 77 K. A Comparative Study.

    Science.gov (United States)

    Bayda, Malgorzata; Redwood, Christopher E; Gupta, Shipra; Dmitrenko, Olga; Saltiel, Jack

    2017-03-30

    We present a comparative study of the photoisomerizations of lumisterol (Lumi), previtamin (Pre), and provitamin D3 (Pro) to tachysterol (Tachy) at 77 K in EPA (5:5:2 ether, isopentane, and ethanol by volume) glass. Fluorescence, fluorescence excitation, and UV spectra, measured in the course of these reactions, were analyzed using singular value decomposition with self-modeling (SVD-SM). This represents an extension of previous work that led to the conclusion that in the EPA glass Pre exists as an s-cis,s-cis-conformer (cZc-Pre) which gives, exclusively, an unstable s-cis,s-cis-conformer of Tachy (cEc-Tachy) and Pro gives mainly the tEc-Tachy, that corresponds to a stable s-trans,s-cis-conformer. ( Redwood , C. ; et al. J. Phys. Chem. Lett. 2013 , 4 , 716 - 721 . ) The surprising result was that the major Pre photoproduct from Pro also has a tZc-Pre conformation instead of the expected cZc-Pre conformation. Accordingly, the Pre to Tachy cis-trans photoisomerization proceeds via a conformer specific one-bond-twist (OBT) process as proposed by Havinga ( Maessen , P. A. ; et al. Angew. Chem. Int. Ed. Engl. 1983 , 22 , 718 - 719 . Maessen , P. A. ; et al. Angew. Chem. Int. Ed. Engl. 1983 , 22 , 994 - 1004 . Maessen , P. A. Ph.D. Thesis, State University at Leiden, Leiden, The Netherlands, 1983. ). The role of the EPA glass in controlling conformer distributions and reaction outcomes is further explored by the extension of the studies to Lumi, whose structure differs substantially from that of its stereoisomer, Pro. Initially, the light-induced conrotatory ring openings of Pro and Lumi are expected to give cZc-Pre conformers that differ in the relative orientation of the double bond dihedral angles that define the chiral axis of the triene moiety: (-)cZ(-)c-Pre and (+)cZ(+)c-Pre, respectively. In the case of Pro, much of the cZc-Pre proceeds to tZc-Pre, the precursor of tEc-Tachy. In contrast, we show that under the same conditions most cZc-Pre formed from Lumi retains

  20. A least square-type procedure for parameter estimation in stochastic differential equations with additive fractional noise

    CERN Document Server

    Neuenkirch, Andreas

    2011-01-01

    We study a least square-type estimator for an unknown parameter in the drift coefficient of a stochastic differential equation with additive fractional noise of Hurst parameter H>1/2. The estimator is based on discrete time observations of the stochastic differential equation, and using tools from ergodic theory and stochastic analysis we derive its strong consistency.

  1. Linear filtering with fractional Brownian motion in the signal and observation processes

    Directory of Open Access Journals (Sweden)

    M. L. Kleptsyna

    1999-01-01

    Full Text Available Integral equations for the mean-square estimate are obtained for the linear filtering problem, in which the noise generating the signal is a fractional Brownian motion with Hurst index h∈(3/4,1 and the noise in the observation process includes a fractional Brownian motion as well as a Wiener process.

  2. Aplicación de la Teoría de Fragmentación/Transporte secuencial a los depósitos de las erupciones de 1723 y 1963-65 del Volcán Irazú, Costa Rica: Caso de dispersión positiva y modelo fractal

    National Research Council Canada - National Science Library

    José Brenes; Guillermo E. Alvarado

    2013-01-01

    ... volcánica, al incorporar el coeficiente de Hurst y el exponente de la ley de potencias. De igual modo, la existencia de valores de dispersión cercanos a cero, podrían ser indicadores de un proceso efusivo, como lo serían las piscinas de lava. Los resultados deducidos del modelo concuerdan con las observaciones de campo.

  3. 75 FR 32343 - Debt Collection and Administrative Offset for Monies Due the Federal Government

    Science.gov (United States)

    2010-06-08

    ..., Minerals Revenue Management, P.O. Box 25165, MS 61013B, Denver, Colorado 80225. Hand-carry comments or use... questions on procedural issues, contact Hyla Hurst, Regulatory Specialist, Minerals Revenue Management (MRM... Minerals Management Service 30 CFR Part 218 RIN 1010-AD36 Debt Collection and Administrative Offset...

  4. Magnetization direction in the Heisenberg model exhibiting fractional Brownian motion

    DEFF Research Database (Denmark)

    Zhang, Zhengping; Mouritsen, Ole G.; Zuckermann, Martin J.

    1993-01-01

    The temporal magnetization-direction fluctuations in the three-dimensional classical ferromagnetic Heisenberg model have been generated by Monte Carlo simulation and analyzed by the rescaled-range method to yield the Hurst exponent H. A value of H congruent-to 1 has been found to apply...

  5. The long-term memory analysis of industrial indices of the Chinese stock market

    Energy Technology Data Exchange (ETDEWEB)

    Yong, L [Renmin University of China, Information School (China); Department of Mathematics, Beijing 100872 (China)], E-mail: linyong01@ruc.edu.cn

    2008-02-15

    The main work of this paper is to apply the fractional market theory and time series analysis for analyzing various industrial indices of the Chinese stock market by rescaling range analysis. Hurst index and the long-term memory of price change in Chinese stock market are studied.

  6. Adaptive and Optimal Control of Stochastic Dynamical Systems

    Science.gov (United States)

    2015-09-14

    games that does not require finding solutions to nonlinear partial differential equations or solv- ing backward stochastic differential equations ...for stochastic partial differential equations with fractional Brownian motions having the Hurst parameter in the interval (1/2,1), which includes the...Linear exponential-quadratic control problems for stochastic partial differential equations are explicitly solved. Discrete time linear quadratic

  7. Survival Mode: The Stresses and Strains of Computing Curricula Review

    Science.gov (United States)

    Tan, Grace; Venables, Anne

    2008-01-01

    In an ideal world, review and changes to computing curricula should be driven solely by academic concerns for the needs of students. The process should be informed by industry accreditation processes and international best practice (Hurst et al., 2001). However, Australian computing curricular review is often driven by the need for financial…

  8. LEBANON AFTER THE CEDAR REVOLUTION/ARE KNUDSEN AND MICHAEL KERR (eds; LEBANON: A HISTORY, 600--2011/by WILLIAM HARRIS

    Directory of Open Access Journals (Sweden)

    Franck Salameh

    2013-05-01

    Full Text Available LEBANON AFTER THE CEDAR REVOLUTION, ARE KNUDSEN AND MICHAEL KERR (eds; London: C. Hurst & Company, 2012. 323 pp. $29.95. LEBANON: A HISTORY, 600--2011, WILLIAM HARRIS; Oxford, New York: Oxford University Press, 2012. 360 pp. $34.95.

  9. Comparative study of nonlinear properties of EEG signals of a normal person and an epileptic patient

    CERN Document Server

    Nurujjaman, Md; Iyengar, A N Sekar

    2007-01-01

    Electroencephalography (EEG) for a normal person is different from an epileptic patient. We have studied EEG of normal men and epileptic patients for different mental conditions using nonlinear techniques like the surrogate analysis and the estimations of the correlation dimensions and Hurst exponents.

  10. Evaluation of serum Vitamin B12 level and related nutritional status ...

    African Journals Online (AJOL)

    2016-03-29

    Mar 29, 2016 ... fish and mushrooms‑one portion of sea foods, mainly fish,. 2–3 times .... with polycystic ovary syndrome, and they found that level of vitB12 in .... Gammon CS, von Hurst PR, Coad J, Kruger R, Stonehouse W. Vegetarianism,.

  11. The long-term memory analysis of industrial indices of the Chinese stock market

    Science.gov (United States)

    Yong, L.

    2008-02-01

    The main work of this paper is to apply the fractional market theory and time series analysis for analyzing various industrial indices of the Chinese stock market by rescaling range analysis. Hurst index and the long-term memory of price change in Chinese stock market are studied.

  12. Miss Chocolate and Messrs Ice-eream

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Aroti was an Indian girl. She went to school in England. She was put in a class where all the children were white, and she suddenly found herself surrounded by a gang of boys all shouting,“Miss Chocolate! Miss Chocolate!” They expectedher to hurst into tears.

  13. What lessons can operational planners infer from the NATO Partnership for Peace Program for the execution of contemporary US Regionally Aligned Force and UK Adaptable Force Security Cooperation missions

    Science.gov (United States)

    2016-05-26

    Politics (United Kingdom: C Hurst & Co Publishers, 2012), 211-213. 114 Lukas Milevski , “Revisiting J.C. Wylie”s Dichotomy of Strategy: The Effects of...European Strategic Culture: Changing Norms on Security and Defence in the European Union. 1st ed. BASINGSTOKE: Palgrave Macmillan, 2007. Milevski

  14. Upwardly Mobile: Attitudes toward the Class Transition among First-Generation College Students

    Science.gov (United States)

    Hinz, Serena E.

    2016-01-01

    First-generation, working-class college students are on the path to upward mobility and may have social and psychological problems related to cultural differences between the working class and the middle class. In her study, Hurst (2007, 2010) reports that students of working-class origin often choose loyalty to one class. However, I revise…

  15. Note on Studying Change Point of LRD Traffic Based on Li's Detection of DDoS Flood Attacking

    Directory of Open Access Journals (Sweden)

    Zhengmin Xia

    2010-01-01

    Full Text Available Distributed denial-of-service (DDoS flood attacks remain great threats to the Internet. To ensure network usability and reliability, accurate detection of these attacks is critical. Based on Li's work on DDoS flood attack detection, we propose a DDoS detection method by monitoring the Hurst variation of long-range dependant traffic. Specifically, we use an autoregressive system to estimate the Hurst parameter of normal traffic. If the actual Hurst parameter varies significantly from the estimation, we assume that DDoS attack happens. Meanwhile, we propose two methods to determine the change point of Hurst parameter that indicates the occurrence of DDoS attacks. The detection rate associated with one method and false alarm rate for the other method are also derived. The test results on DARPA intrusion detection evaluation data show that the proposed approaches can achieve better detection performance than some well-known self-similarity-based detection methods.

  16. Fractional Brownian motion of director fluctuations in nematic ordering

    DEFF Research Database (Denmark)

    Zhang, Z.; Mouritsen, Ole G.; Otnes, K.

    1993-01-01

    to determine the Hurst exponent H. Theory and experiment are in good agreement. A value of H congruent-to 1 was found for the nematic phase, characterizing fractional Brownian motion, whereas H congruent-to 0.5, reflecting ordinary Brownian motion, applies in the isotropic phase. Field-induced crossover from...... fractional to ordinary Brownian motion was observed in the nematic phase....

  17. Aplicación del análisis de rango reescalado R/S para la predicción de genes en el genoma vegetal

    National Research Council Canada - National Science Library

    Martha Isabel Almanza Pinzón; Karina López López; Carlos Eduardo Téllez Villa

    2010-01-01

    ... de búsqueda en las bases de datos. Un procedimiento estadístico con base en el análisis R/S y el coeficiente de Hurst fue desarrollado para caracterizar y predecir genes y los componentes estructurales de estos (exones e intrones...

  18. Length Requirement of Self-Similar Network Traffic

    Institute of Scientific and Technical Information of China (English)

    RAOYunhua; XUZhongyang; LIUZhenglin

    2004-01-01

    It is important to study the second-order character of self-similar network traffic in performance evaluation. Especially in real-time applications, traffic autocorrelation is a useful analysis tool, so how to estimate it quickly and reliably is a significant problem. In this paper,we studied the estimation and evaluation of self-similar network traffic autocorrelation structure. With the model of Fractional Gaussian noise (FGN) process, we obtained a simple variance expression of estimated autocorrelation,which is the function of Hurst parameter (H) and traffic data length. The relationship among Hurst parameter, accuracy of the estimated autocorrelation and required data length of self-similar traffic shows that the accuracy of estimated autocorrelation decreases with the increasing Hurst parameter and with the decreasing data length too. But over-long sampled data could not improve the accuracy of estimated autocorrelation remarkably. Furthermore, a sharp variety of accuracy is discovered between H > 0.75 and H < 0.75. It is a very interesting phenomenon that had not been reported before. This shows that Hurst parameter could reflect the second-order character of selfsimilarity, but it is not enough to capture all the traffic features. Experiments, which were performed with synthetical FGN traffics, confirmed the validity of our results.It can also be a reference in estimating the autocorrelation function of other self-similar processes.

  19. Work-Life Conflict and Social Inequality in Western Europe

    Science.gov (United States)

    McGinnity, Frances; Calvert, Emma

    2009-01-01

    Recent debates on time-use suggest that there is an inverse relationship between time poverty and income poverty (Aguiar and Hurst in Q J Econ C(3):969-1006, "2007"), with Hammermesh and Lee (Rev Econ Stat 89(2):374-383, "2007") suggesting much time poverty is "yuppie kvetch" or "complaining". Gershuny (Soc…

  20. Tay-Sachs disease

    Science.gov (United States)

    ... MF, eds. Creasy and Resnik's Maternal-Fetal Medicine: Principles and Practice . 7th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 30. Review Date 10/30/2016 Updated by: Anna C. Edens Hurst, MD, MS, Assistant Professor in Medical Genetics, The University of Alabama at Birmingham, Birmingham, AL. ...

  1. Riley-Day syndrome

    Science.gov (United States)

    ... MF, eds. Creasy and Resnik's Maternal-Fetal Medicine: Principles and Practice . 7th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 30. Review Date 10/30/2016 Updated by: Anna C. Edens Hurst, MD, MS, Assistant Professor in Medical Genetics, The University of Alabama at Birmingham, Birmingham, AL. ...

  2. In-flight measurements of space count in the AVHRR solar reflectance bands

    Science.gov (United States)

    Ignatov, Alexander; Cao, Changyong; Sullivan, Jerry T.; Levin, Robert H.; Wu, Xiangqian; Galvin, Roy P.

    2005-01-01

    The solar reflectance bands (SRB) of the Advanced Very High Resolution Radiometers (AVHRR) flown onboard NOAA satellites are often referred to as non-calibrated in-flight. In contrast, the Earth emission bands (EEB) are calibrated using two reference points, deep space and the internal calibration target. In the SRBs, measurements of space count (SC) are also available, however, historically they are not used to specify the calibration offset ("zero count", ZC), which does not even appear in the calibration equation. A regression calibration formulation is used instead, equivalent to setting the ZC to a constant, whose value is specified from pre-launch measurements. Our analyses supported by a review of the instrument design and a wealth of historical SC information show that the SC varies in-flight and it differs from its pre-launch value. We therefore suggest that (1) the AVHRR calibration equation in the SRBs be re-formulated to explicitly use the ZC, consistently with the EEBs, and (2) the value of ZC be specified from the onboard measurements of SC. This study emphasizes the importance of clear discrimination between the SC (which is a measured quantity and therefore takes on a range of values, characterized by the empirical probability density function, PDF), from the ZC (which is a parameter in the calibration equation, i.e. a number whose value needs to be estimated from the measured SC as a mean, median or other statistic of the measured PDF). The ZC-formulation of the calibration equation is physically solid, and it minimizes human-induced calibration errors resulting from the use of a regression formulation with an un-constrained intercept. Specifying the calibration offset improves radiances, most notably at the low end of radiometric scale, and subsequently provides for more accurate vicarious determinations of the calibration slope (inverse gain). These calibration improvements are important for the products derived from the AVHRR low-radiances, such

  3. Generation and characterization of two novel low phytate mutations in soybean (Glycine max L. Merr.).

    Science.gov (United States)

    Yuan, Feng-Jie; Zhao, Hai-Jun; Ren, Xue-Liang; Zhu, Shen-Long; Fu, Xu-Jun; Shu, Qing-Yao

    2007-11-01

    Phytic acid (PA, myo-inositol 1, 2, 3, 4, 5, 6 hexakisphosphate) is important to the nutritional quality of soybean meal. Organic phosphorus (P) in PA is indigestible in humans and non-ruminant animals, which affects nutrition and causes P pollution of ground water from animal wastes. Two novel soybean [(Glycine max L. (Merr.)] low phytic acid (lpa) mutations were isolated and characterized. Gm-lpa-TW-1 had a phytic acid P (PA-P) reduction of 66.6% and a sixfold increase in inorganic P (Pi), and Gm-lpa-ZC-2 had a PA-P reduction of 46.3% and a 1.4-fold increase in Pi, compared with their respective non-mutant progenitor lines. The reduction of PA-P and increase of Pi in Gm-lpa-TW-1 were molar equivalent; the decrease of PA-P in Gm-lpa-ZC-2, however, was accompanied by the increase of both Pi and lower inositol phosphates. In both mutant lines, the total P content remained similar to their wild type parents. The two lpa mutations were both inherited in a single recessive gene model but were non-allelic. Sequence data and progeny analysis indicate that Gm-lpa-TW-1 lpa mutation resulted from a 2 bp deletion in the soybean D: -myo-inositol 3-phosphate synthase (MIPS1 EC 5.5.1.4) gene 1 (MIPS1). The lpa mutation in Gm-lpa-ZC-2 was mapped on LG B2, closely linked with microsatellite loci Satt416 and Satt168, at genetic distances of approximately 4.63 and approximately 9.25 cM, respectively. Thus this mutation probably represents a novel soybean lpa locus. The seed emergence rate of Gm-lpa-ZC-2 was similar to its progenitor line and was not affected by seed source and its lpa mutation. However, Gm-lpa-TW-1 had a significantly reduced field emergence when seeds were produced in a subtropic environment. Field tests of the mutants and their progenies further demonstrated that the lpa mutation in Gm-lpa-ZC-2 does not negatively affect plant yield traits. These results will advance understanding of the genetic, biochemical and molecular control of PA synthesis in soybean. The

  4. Phenomenological implications of the intrinsic charm in the Z boson production at the LHC

    Energy Technology Data Exchange (ETDEWEB)

    Bailas, G. [Universite Blaise Pascal, CNRS/IN2P3, Laboratoire de Physique Corpusculaire, Aubiere Cedex (France); Universidade Federal de Pelotas, High and Medium Energy Group, Instituto de Fisica e Matematica, Pelotas, RS (Brazil); Goncalves, V.P. [Lund University, Department of Astronomy and Theoretical Physics, Lund (Sweden); Universidade Federal de Pelotas, High and Medium Energy Group, Instituto de Fisica e Matematica, Pelotas, RS (Brazil)

    2016-03-15

    In this paper we study the Z, Z+jet, Z+c, and Z+c+jet production in pp collisions at the LHC considering different models for the intrinsic charm content of the proton. We analyze the impact of the intrinsic charm in the rapidity and transversemomentum distributions for these different processes. Our results indicated that differently from the other processes, the Z+c cross section is strongly affected by the presence of the intrinsic charm. Moreover, we propose the analysis of the ratios R(Z +c/Z) ≡ σ(Z+c)/σ(Z) and R(Z+c/Z+jet) ≡ σ(Z+c)/σ(Z+jet) and we demonstrate that these observables can be used as a probe of the intrinsic charm. (orig.)

  5. An Iterative Technique for Designing Finite Impulse Response Chebyshev MTI Filters with Nonlinear Delay

    Science.gov (United States)

    1978-03-01

    Passband Ripple Passband Lower Passbaisd Ripple Passband Lower in Passband Weights N Edge IHz) fPASS (d8) RPe Edge ( Hzj fPASS (dB) RpB Edge (Hz) Ripple (dB...NN IIV 24 THIS PAGE IS BtST QUALITY MR&QXCABLE RhM COrY R±albH.Md TD DDC . w u- w F-ii W _jL 4 0 W X Z-C :1[M (’ ’ ’ 𔃻(4C z z3 z 11 z k-i I 1’ t...L~ THIS PAGE IS BEST QUALITY PRACTICABLE 31 EFOM OPY FUlRNISIE TD DDQ .~ x z S. < w W, w r -c N 0 r z~’ Nr Z-C14c;L ciw I-- ED w w. w’ ;= ’L 0 to CC

  6. THE POETIC DISCOURSE CONVERSION OF OBJECT’S DENIAL AND THEME OF THE MEANING’S REPRESSION IN THE ANDAY’S POEM ANDAY ŞİİRİNDE NESNENİN YADSINMASI VE ANLAMIN İTİLMESİ İZLEĞİNİN POETİK SÖYLEME DÖNÜŞÜMÜ

    Directory of Open Access Journals (Sweden)

    Mitat DURMUŞ

    2009-12-01

    Full Text Available In this study I try to analyze the relations between words and objects in the poetry of Melih Cevdet Anday, and I try to analyze the relations between poetry and words, and poetry and meaning; some intertextual points have been discussed. Bu çalışmada, Melih Cevdet Anday’ın şiirlerinde sözcüklerin nesnelerle olan ilişkisine ve nihayet oradan da kalkarak sözcüklerin şiirle, şiirin anlamla kurduğu ilişki üzerinde nasıl durulduğu konusu çözümlenmeye çalışılmış, metinlerarası kimi noktalara işaret edilmiştir.

  7. Study of the XYZ states at the BESIII

    CERN Document Server

    Yuan, Chang-Zheng

    2015-01-01

    With its unique data samples at energies of 3.8--4.6 GeV, the BESIII experiment made a significant contribution to the study of charmonium and charmonium-like states, i.e., the XYZ states. We review the results for observations of the Zc(3900) and Zc(4020) states, the X(3872) in e+e- annihilation, and charmonium psi(1^3D_2) state, as well as measurements of the cross-sections of omega chi_cJ and eta J/psi, and the search for e+e- to gamma chi_cJ and gamma Y(4140). We also present data from BESIII that may further strengthen the study of the XYZ and conventional charmonium states, and discuss perspectives on future experiments.

  8. DETECTION AND ASSESSMENT OF ABIOTIC STRESS OF CONIFEROUS LANDSCAPES CAUSED BY URANIUM MINING (USING MULTITEMPORAL HIGH RESOLUTION LANDSAT DATA

    Directory of Open Access Journals (Sweden)

    Lachezar Filchev

    2012-01-01

    Full Text Available Remote sensing have become one of decisive technologies for detection and assessment of abiotic stress situations, such as snowstorms, forest fires, drought, frost, technogenic pollution etc. Present work is aiming at detection and assessment of abiotic stress of coniferous landscapes caused by uranium mining using high resolution satellite data from Landsat. To achieve the aim, ground-based geochemical data and were coupled with the satellite data for two periods, i.e. prior and after uranium mining decommissioning, into a file geodatabase in ArcGIS/ArcInfo 9.2, where spatial analyses were carried out. As a result, weak and very weak relationships were found between the factor of technogenic pollution—Zc and vegetation indices NDVI, NDWI, MSAVI, TVI, and VCI. The TVI performs better compared to other indices in terms of separability among classes, whereas the NDVI and VCI correlate well than other indices with Zc.

  9. Exact dynamics of a class of aggregation models

    Science.gov (United States)

    Majumdar, Satya N.; Sire, Clément

    1993-11-01

    The dynamics of a class of aggregation models proposed by Takayasu and co-workers are solved exactly in one dimension and in the mean field limit. These models describe the aggregation of positive and negative charges. In one dimension, we find the dynamical cluster-size exponents z=3/2 and zc=3/4 when the average flux of injected charges is nonzero and zero, respectively. We also find the crossover exponent near the transition to be φ=4/3. Within mean field theory, we find these exponents to be z=2, zc=1, and φ=1. Assuming dynamic scaling, we show that in any dimension, these exponents are related to one single static exponent.

  10. Exploring finite density QCD phase transition with canonical approach -Power of multiple precision computation-

    CERN Document Server

    Oka, Shotaro

    2015-01-01

    The canonical approach for finite density lattice QCD has a numerical instability. This instability makes it difficult to use the method reliably at the finite real chemical potential region. We studied this instability in detail and found that it is caused by the cancellation of significant digits. In order to reduce the effect of this cancellation, we adopt the multiple precision calculation for our discrete Fourier transformation (DFT) program, and we get the canonical partition function Zc(n,T) with required accuracy. From the obtained Zc(n,T), we calculate Lee--Yang zero distribution varying the number of significant digits. As a result, some curves surround the origin in the fugacity plane, but they are moved by varying the number of significant digits. Hence, we conclude that these curves are pseudo phase transition lines, and not real ones.

  11. Detection of a common chimeric transcript between human chromosomes 7 and 16

    Directory of Open Access Journals (Sweden)

    Fang Wenwen

    2012-12-01

    Full Text Available Abstract Interchromosomal chimeric RNA molecules are often transcription products from genomic rearrangement in cancerous cells. Here we report the computational detection of an interchromosomal RNA fusion between ZC3HAV1L and CHMP1A from RNA-seq data of normal human mammary epithelial cells, and experimental confirmation of the chimeric transcript in multiple human cells and tissues. Our experimental characterization also detected three variants of the ZC3HAV1L-CHMP1A chimeric RNA, suggesting that these genes are involved in complex splicing. The fusion sequence at the novel exon-exon boundary, and the absence of corresponding DNA rearrangement suggest that this chimeric RNA is likely produced by trans-splicing in human cells. Reviewers This article was reviewed by Rory Johnson (nominated by Fyodor Kondrashov; Gal Avital and Itai Yanai

  12. Similar Marginal Precision of Zirconia- and Metal-Ceramic Fixed Dental Prostheses

    DEFF Research Database (Denmark)

    Nicolaisen, Maj Høygaard; Bahrami, Golnosh; Schropp, Lars

    Similar Marginal Precision of Zirconia- and Metal-Ceramic Posterior Fixed Dental Prostheses Objective: An increased gap between restoration and prepared tooth causes more luting material to be exposed to the oral environment resulting in increased deterioration, leading to bacterial accumulation...... which can cause marginal periodontitis and secondary caries. The purpose of this randomized clinical study was to compare the marginal precision of CAD/CAM Zirconia-ceramic (ZC) and cast gold alloy metal-ceramic (MC) posterior fixed dental prostheses. Methods: As part of an ongoing randomized controlled...... clinical trial, 34 patients were randomized into two groups to receive a 3-unit fixed dental prosthesis (FDP) replacing a second premolar or a first molar. 17 ZC FDPs (BeCe CAD Zirkon, BEGO with Vita VM9, VITA ) and 17 MC FDPs (Bio PontoStar, BEGO with Vita VM13, VITA). All FDPs were made in accordance...

  13. Some studies on strongly regular rings%关于强正则环的一些研究

    Institute of Scientific and Technical Information of China (English)

    崔顺

    2009-01-01

    利用ZC-环和自一-射环的性质来刻画强正则环.证明了下列结果:1设R是ZC-环,下列条件等价:(1)R是强正则环;(2)R的每一个极大本质左理想是GP-内射的;(3)R中存在一个忠实左R-模K,使得当k∈K且l(k)本质时,l(k)是GP-内射的.2设R是ELT-环,且对于R的每一个本质左理想M,(R/M)是平坦模,R的每一个补左理想是GW-理想,如果R是左MI-环,那么R是左自-内射强正则环.

  14. The hidden-charm pentaquark and tetraquark states

    CERN Document Server

    Chen, Hua-Xing; Liu, Xiang; Zhu, Shi-Lin

    2016-01-01

    In the past decade many charmonium-like states were observed experimentally. Especially those charged charmonium-like $Z_c$ states and bottomonium-like $Z_b$ states can not be accommodated within the naive quark model. These charged $Z_c$ states are good candidates of either the hidden-charm tetraquark states or molecules composed of a pair of charmed mesons. Recently, the LHCb Collaboration discovered two hidden-charm pentaquark states, which are also beyond the quark model. In this work, we review the current experimental progress and investigate various theoretical interpretations of these candidates of the multiquark states. We list the puzzles and theoretical challenges of these models when confronted with the experimental data. We also discuss possible future measurements which may distinguish the theoretical schemes on the underlying structures of the hidden-charm multiquark states.

  15. Document Image Compression and Analysis

    Science.gov (United States)

    1997-04-01

    jN]CZCwCiCwCC�CCC�CC�CC�CCwCiCwCC B¡ {ZC(¡ ¢�HJ^jH9N;^cUc\\k[h^c\\@UXMOUc`lHVT@SD£ JHV ^XS_OT C9CC�CC�CCwCiCwCC�CCC�CC�CC�CCwCiCwCC BV...yZCDB EGF@HJI9K@LDM�OVQ�K HY$YZS_T@`$C�C�CC�CCC�CC�CCwCiCwCC�CCC�CC�CC�CCwCiCwCC {y yZC({ ¥�MJ[h^XOU*¦q\\ HVT&^cSD£ JHV ^XS_OT§UXM... Jh (" 6*Fk/+G =B"J!HF&)*G,%’t6$$/k7K&43=(L&D +G 9t6 "!?!-GFG*3=; +E #$;FG* "k’Gល=G -@6F;&4

  16. Design of the Remote Monitoring System Based on Embedded Linux%基于嵌入式Linux远程监控系统设计

    Institute of Scientific and Technical Information of China (English)

    刘滨; 朱雁祥; 姜天淇

    2013-01-01

      该系统采用ARM内核的S3C2410芯片作为处理器,以嵌入式Linux平台作为服务端,通过ZC301摄像头采集图像,将嵌入式Linux操作系统与图像处理技术及网络传输相结合,设计出一种基于嵌入式web服务器的C/S模式的远程监控系统。%This system adopts ARM kernel S3C2410 as its CPU, the server program runs under the embedded Linux system plat-form, images is captured by ZC301 camera. In this paper, a C/S remote monitoring system based on embedded web server is de-signed with combining embedded Linux OS and image disposing technology transport by the web.

  17. Similar Marginal Precision of Zirconia- and Metal-Ceramic Fixed Dental Prostheses

    DEFF Research Database (Denmark)

    Nicolaisen, Maj Høygaard; Bahrami, Golnosh; Schropp, Lars

    clinical trial, 34 patients were randomized into two groups to receive a 3-unit fixed dental prosthesis (FDP) replacing a second premolar or a first molar. 17 ZC FDPs (BeCe CAD Zirkon, BEGO with Vita VM9, VITA ) and 17 MC FDPs (Bio PontoStar, BEGO with Vita VM13, VITA). All FDPs were made in accordance......Similar Marginal Precision of Zirconia- and Metal-Ceramic Posterior Fixed Dental Prostheses Objective: An increased gap between restoration and prepared tooth causes more luting material to be exposed to the oral environment resulting in increased deterioration, leading to bacterial accumulation...... which can cause marginal periodontitis and secondary caries. The purpose of this randomized clinical study was to compare the marginal precision of CAD/CAM Zirconia-ceramic (ZC) and cast gold alloy metal-ceramic (MC) posterior fixed dental prostheses. Methods: As part of an ongoing randomized controlled...

  18. Mutually exclusive CBC-containing complexes determine RNA fate

    DEFF Research Database (Denmark)

    Giacometti, Simone; Benbahouche, Nour El Houda; Domanski, Michal

    2016-01-01

    The cap-binding complex (CBC) stimulates processing reactions of capped RNAs, including their splicing, 3'end formation, degradation and nuclear transport. CBC effects are particular for individual RNA families, but how such selectivity is achieved remains elusive. Here, we map in vivo RNA binding...... specificities of CBC partners: PHAX, which functions in pre-sn(o)RNAs transport; ZC3H18, which associates with the nuclear exosome targeting (NEXT) complex to trigger RNA degradation and ARS2, which stimulates 3' end-formation/transcription termination of several transcript types. Surprisingly, these proteins...... all bind capped RNAs without strong preferences for given families or individual transcripts. Despite this, PHAX and ZC3H18 compete for CBC-binding, which is functionally relevant, since depletion of one factor sensitizes RNAs to the presence of the other. This suggests that interactions of factors...

  19. The Effects of Behavioral Change in Response to Acoustic Disturbance on the Health of the Population of Blainville’s Beaked Whales (Mesoplodon densirostris) in the Tongue of the Ocean

    Science.gov (United States)

    2014-09-30

    Whales (Mesoplodon densirostris) in the Tongue of the Ocean David Moretti Navy Undersea Warfare Center (NUWC) Newport, RI Phone: (401) 832-5749...population health of Blainville’s beaked whale (Mesoplodon densirostris, Md) in the Tongue Of The Ocean (TOTO), Bahamas, using data from passive...in the Tongue Of The Ocean (TOTO), Bahamas [3], and a population of Zc has been documented on the Southern California Offshore Range (SCORE) off San

  20. COCLEFT EXTENSIONS OF HOPF ALGEBRAS

    Institute of Scientific and Technical Information of China (English)

    祝家贵

    2006-01-01

    Let B and H be finitely generated projective Hopf algebras over a commutative ring R,with B cocommutative and H commutative. In this paper we investigate cocleft extensions of Hopf algebras, and prove that the isomorphism classes of cocleft Hopf algebras extensions of B by H are determined uniquely by the group C(B, H) = ZC(B, H)/d(B, H) .

  1. Ungari kunst Pärnus

    Index Scriptorium Estoniae

    1999-01-01

    Ungari kaasaegse kunsti näitus 16. jaan.-st Pärnus Uue Kunsti Muuseumis ja mudaravilas. Väljas on István Nádleri, András Hټberi (1949), Péter Balázc Kovacsi (1955), Anna Pauli (1944) ja Pärnu lähedal maal töötava Eestimaa ungarlase Urmas Bereczki (1957) tööd

  2. Ungari kunst Pärnus

    Index Scriptorium Estoniae

    1999-01-01

    Ungari kaasaegse kunsti näitus 16. jaan.-st Pärnus Uue Kunsti Muuseumis ja mudaravilas. Väljas on ungari maalikunstnik István Nádleri, ungari skulptor András Húberi (1949), ungari kunstnik Péter Balázc Kovacsi (1955), ungari tekstiilikunstnik Anna Pauli (1944) ja Pärnu lähedal maal töötava eesti-ungari keraamik Urmas Bereczki (1957) tööd

  3. The Ruben Collection

    DEFF Research Database (Denmark)

    Nielsen, Steen Kaargaard

    2009-01-01

    Engelsksproget informationsvideo (4:20) udarbejdet i samarbejde med Statsbiblioteket, Århus (Ole Bisbjerg, Maria Hvid Stenalt), og tilgængelig på følgende web-adresser: http://www.pia.gov.ph/wdavh2009/?m=3&i=denmark&sm=events (Unesco World Day for Audio-Visual Heritage 27 October 2009) http://www.youtube.......com/watch?v=edqr0SlScZc (youtube.com)...

  4. Integrated Defense Occupational Stratification System.

    Science.gov (United States)

    1978-03-29

    XadOe~ a ZId A.~ ~~ ~~ ~~ w ZZ. .ZC4. UCJi CUL uiA.O2 Z -C~~~~LL ZZ r K--AA A4A w4-9. . eI 64 a ai Ol ( , P O - I pa a. &8 0 t CP 1.81 N A . C a e.C w

  5. Proceedings: Ejector Workshop for Aerospace Applications

    Science.gov (United States)

    1982-06-01

    SECTIONAL VIEWS OF AN AUGMENTOR 530 00 Wi I- L(I C= 0 IL :w I = -r : e C I LU) C) 0U 0 - 7-- LUZ : C) U)w C) C) 0.. C3 <- I CKCO0 04 LU a > ZC/) tu a. 0 Ix C...16mm Cine camera were used. In order to get a better picture of the entrainment processes, some runs were taken with laser sheet illumination. The

  6. Ungari kunst Pärnus

    Index Scriptorium Estoniae

    1999-01-01

    Ungari kaasaegse kunsti näitus 16. jaan.-st Pärnus Uue Kunsti Muuseumis ja mudaravilas. Väljas on István Nádleri, András Hټberi (1949), Péter Balázc Kovacsi (1955), Anna Pauli (1944) ja Pärnu lähedal maal töötava Eestimaa ungarlase Urmas Bereczki (1957) tööd

  7. Ungari kunst Pärnus

    Index Scriptorium Estoniae

    1999-01-01

    Ungari kaasaegse kunsti näitus 16. jaan.-st Pärnus Uue Kunsti Muuseumis ja mudaravilas. Väljas on ungari maalikunstnik István Nádleri, ungari skulptor András Húberi (1949), ungari kunstnik Péter Balázc Kovacsi (1955), ungari tekstiilikunstnik Anna Pauli (1944) ja Pärnu lähedal maal töötava eesti-ungari keraamik Urmas Bereczki (1957) tööd

  8. Lubbock Regional Airport, Texas. Revised Uniform Summary of Surface Weather Observations (RUSSWO). Parts A-F.

    Science.gov (United States)

    1982-11-12

    FREQUENCY OF WIND DIRECTION AND SPEED (FROM HOURLY OBSERVATIONS) 7 267 LUBOCK REGIONAL ARPT TX 73-81 ALUG ALL WEATHER 1 ]0-ZC02 SPEED MEAN IN’S) 5.- 4.-6 7.10...VISIBILITYA!;- EAITHER SF0VlCF/-AC :-’ LUBOCK ;ZE IONAL Af T T - C PERCENTAGE FREQUENCY OF OCCURRENCE FROM HOURLY OBSERVATIONS 672- 6 0. T 6 67 69.1~ 64

  9. Interaction between essential trace and toxic elements in the scalp hair samples of smokers and alcohol user diabetics

    OpenAIRE

    Afridi, Hassan Imran; Gul Kazi, Tasneem; Brabazon, Dermot; Naher, Sumsun

    2012-01-01

    In the present study, trace and toxic elements were determined in the Scalp Hair (SH) samples of patients diagnosed with diabetes mellitus (DM) who were smokers and habitual alcohol drinkers living in Dublin, Ireland. The concentrations of elements were measured by inductively coupled plasma atomic emission spectrophotometer after microwave-assisted acid digestion. The validity and accuracy of the methodology was checked using Certified Reference Material (CRM) (NCS ZC 81002b) and by the conv...

  10. A comparison of the effect of certain inorganic salts on suppression acute skin irritation by human biometric assay: A randomized, double-blind clinical trial

    Directory of Open Access Journals (Sweden)

    Sayedali Fatemi

    2016-01-01

    Full Text Available Background: Strontium, zinc, and potassium salts have been demonstrated to inhibit irritation and inflammation when applied topically. Particularly, strontium chloride (SC and potassium nitrate (KN are reported to reduce skin and tooth sensitivity. The aim of the present study was to compare the anti-irritant effects of four inorganic salts and assign the ingredient which can suppress skin irritation due to chemical or environmental exposure, more effectively. We compared the anti-inflammatory effects of SC, strontium nitrate (SN, KN, and zinc chloride (ZC. Materials and Methods: This double-blind trial was conducted on 32 healthy volunteers with sensitive skin. Irritation was induced by 24 h exposure with 1.0% sodium lauryl sulfate on arms.. Treatments were applied by an ointment of SN, SC hexahydrate, KN, and ZC and their 1%, 3%, and 5% (w/v concentrations were prepared. The dosage was twice daily for 6 days to the irritated areas. Skin reactions were evaluated instrumentally. Results: SC had a beneficial effect that was significant overall. All other treatments exert a protective effect in skin barrier function but not significantly. With the exception of ZC, all test substances improved skin hydration but the effect of SC was significant. In respect of colorimetric assessment, all treatments, excluding ZC, reduced erythema significantly compared with an untreated control 7 days after treatment start. There was no support for a dose-response effect. Conclusion: Analysis of the biometric measurements revealed that the strontium salts are best, not treating is worst, and there is little difference between the other treatments. Hence, the skin care products containing SC and SN may reduce the signs and symptoms of irritant contact dermatitis.

  11. Compressive strength and the effect of duration after photo-activation among dual-cure bulk fill composite core materials.

    Science.gov (United States)

    Alkhudhairy, Fahad; Vohra, Fahim

    2016-01-01

    To assess compressive strength and effect of duration after photoactivation on the compressive strength of different dual cure bulk fill composites. Seventy-two disc shaped (4x10mm) specimens were prepared from three dual cure bulk fill materials, ZirconCore (ZC) (n=24), MulticCore Flow (MC) (n=24) and Luxacore Dual (LC) (n=24). Half of the specimens in each material were tested for failure loads after one hour [MC1 (n=12), LC1 (n=12) & ZC1 (n=12)] and the other half in 7 days [MC7 (n=12), LC7 (n=12), ZC7 (n=12)] from photo-polymerization using the universal testing machine at a cross-head speed of 0.5 cm/minutes. Compressive strength was calculated using the formula UCS=4f/πd(2). Compressive strengths among different groups were compared using analysis of variance (ANOVA) and Tukey's multiple comparisons test. Maximum and minimum compressive strengths were observed in ZC7 (344.14±19.22) and LC1 (202.80±15.52) groups. Specimens in LC1 [202.80 (15.52)] showed significantly lower compressive strength as compared to MC1 [287.06 (15.03)] (pstrengths compared to LC7 [324.56 (19.47)] and MC7 [315.26 (12.36)]. Compressive strengths among all three materials were significantly higher (pstrength compared to MC and LC. Increasing the post photo-activation duration (from one hour to 7 days) significantly improves the compressive strengths of dual cure bulk fill material.

  12. Distribution, Abundance and Population Structuring of Beaked Wales in the Great Bahama Canyon, Northern Bahamas

    Science.gov (United States)

    2012-09-02

    Figure 5. The number of years that individual, distinctive non- calf Blainville’s beaked whales were photo-identified from high quality photographs...individual (Zc027) was pushed off the beach by rescuers in SW Abaco on March 15. 2000. It was later re-sighted with a dependent calf off NW...among the three species of beaked whales (Figure 7), suggesting that they feed on largely different prey. Stable isotopes ratios also differed among

  13. Erosive cola-based drinks affect the bonding to enamel surface: an in vitro study

    Directory of Open Access Journals (Sweden)

    Leslie Caroll CASAS-APAYCO

    2014-10-01

    Full Text Available Objective: This study aimed to assess the impact of in vitro erosion provoked by different cola-based drinks (Coke types, associated or not with toothbrushing, to bonding to enamel. Material and methods: Forty-six bovine enamel specimens were prepared and randomly assigned into seven groups (N=8: C- Control (neither eroded nor abraded, ERO-RC: 3x/1-minute immersion in Regular Coke (RC, ERO-LC: 3x/1-minute immersion in Light Coke (LC, ERO-ZC: 3x/1-minute immersion in Zero Coke (ZC and three other eroded groups, subsequently abraded for 1-minute toothbrushing (EROAB-RC, EROAB-LC and EROAB-ZC, respectively. After challenges, they were stored overnight in artificial saliva for a total of 24 hours and restored with Adper Single Bond 2/Filtek Z350. Buildup coronal surfaces were cut in 1 mm2 -specimens and subjected to a microtensile test. Data were statistically analyzed by two-way ANOVA/Bonferroni tests (α=0.05. Failure modes were assessed by optical microscopy (X40. The Interface of the restorations were observed using Confocal Laser Scanning Microscopy (CLSM. Results: All tested cola-based drinks significantly reduced the bond strength, which was also observed in the analyses of interfaces. Toothbrushing did not have any impact on the bond strength. CLSM showed that except for Zero Coke, all eroded specimens resulted in irregular hybrid layer formation. Conclusions: All cola-based drinks reduced the bond strength. Different patterns of hybrid layers were obtained revealing their impact, except for ZC.

  14. Measurement of soluble solids content in watermelon by Vis/NIR diffuse transmittance technique

    Institute of Scientific and Technical Information of China (English)

    TIAN Hai-qing; YING Yi-bin; LU Hui-shan; FU Xia-ping; YU Hai-yan

    2007-01-01

    Watermelon is a popular fruit in the world with soluble solids content (SSC) being one of the major characteristics used for assessing its quality. This study was aimed at obtaining a method for nondestructive SSC detection of watermelons by means of visible/near infrared (Vis/NIR) diffuse transmittance technique. Vis/NIR transmittance spectra of intact watermelons were acquired using a low-cost commercially available spectrometer operating over the range 350~1000 nm. Spectra data were analyzed by two multivariate calibration techniques: partial least squares (PLS) and principal component regression (PCR)methods. Two experiments were designed for two varieties of watermelons [Qilin (QL), Zaochunhongyu (ZC)], which have different skin thickness range and shape dimensions. The influences of different data preprocessing and spectra treatments were also investigated. Performance of different models was assessed in terms of root mean square errors of calibration (RMSEC), root mean square errors of prediction (RMSEP) and correlation coefficient (r) between the predicted and measured parameter values.Results showed that spectra data preprocessing influenced the performance of the calibration models. The first derivative spectra showed the best results with high correlation coefficient of determination [r=0.918 (QL); r=0.954 (ZC)], low RMSEP [0.65 °Brix(QL); 0.58 °Brix (ZC)], low RMSEC [0.48 °Brix (QL); 0.34 °Brix (ZC)] and small difference between the'RMSEP and the RMSEC by PLS method. The nondestructive Vis/NIR measurements provided good estimates of SSC index of watermelon, and the predicted values were highly correlated with destructively measured values for SSC. The models based on smoothing spectra(Savitzky-Golay filter smoothing method) did not enhance the performance of calibration models obviously. The results indicated the feasibility of Vis/NIR diffuse transmittance spectral analysis for predicting watermelon SSC in a nondestructive way.

  15. Hemodynamic and Mechanical Properties of the Proximal Aorta in Young and Middle-Aged Adults With Isolated Systolic Hypertension: The Dallas Heart Study.

    Science.gov (United States)

    Yano, Yuichiro; Neeland, Ian J; Ayers, Colby; Peshock, Ronald; Berry, Jarett D; Lloyd-Jones, Donald M; Greenland, Philip; Mitchell, Gary F; Vongpatanasin, Wanpen

    2017-07-01

    The aim of this study was to assess characteristic impedance (Zc) of the proximal aorta in young and middle-aged individuals with isolated systolic hypertension (ISH). Zc is an index of aortic stiffness relative to aortic size. In the Dallas Heart Study, 2001 untreated participants 18 to 64 years of age (mean age: 42.3 years; 44% black race) were divided into the following groups based on office blood pressure (BP) measurements: (1) optimal BP (systolic BP [SBP] hypertension (SBP hypertension (SBP ≥140 mm Hg and DBP ≥90 mm Hg; n=178). Zc, aortic arch pulse wave velocity, and minimum ascending aortic size were quantified using cardiovascular magnetic resonance. In multivariable-adjusted linear models, Zc was highest in the ISH group compared with the optimal BP, isolated diastolic hypertension, or systolic-diastolic hypertension groups (103.2±4.0 versus 68.3±2.1, 75.4±6.0, and 88.9±4.8 dyne*seconds/cm(5), respectively; all Phypertension, or systolic-diastolic hypertension groups (6.3±0.3 versus 4.3±0.1, 4.4±0.4 and 5.5±0.3 m/s, respectively; all P0.2). Results were similar in a subgroup of 1551 participants 18 to 49 years of age. In a multiracial population-based sample, we found evidence of a mismatch between proximal aortic stiffness and diameter in young and middle-aged adults with ISH. © 2017 American Heart Association, Inc.

  16. Planning for a Department of Defense Mail Service Pharmacy System

    Science.gov (United States)

    1991-12-01

    USERS UNCLASSIFIED 22a NAME OF RESPONSrBE INDIVIDUAL 22b TELEPHONE (include Area Code) 22( OFFICE SYMBOL Dr. Keebom Kant (408) 646-3106 AS/Kk DD Form...number of prescriptions to be filled by a MSP system shows an Increase of 6.8% over FY 1991 demand. 30 The de-and fo: ind- vidu phaarm a- etica ! Z...c

  17. Observation of a neutral structure near the $D\\bar{D}^{*}$ mass threshold in $e^{+}e^{-}\\to (D \\bar{D}^*)^0\\pi^0$ at $\\sqrt{s}$ = 4.226 and 4.257 GeV

    CERN Document Server

    Ablikim, M; Ai, X C; Albayrak, O; Albrecht, M; Ambrose, D J; Amoroso, A; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Bennett, D W; Bennett, J V; Bertani, M; Bettoni, D; Bian, J M; Bianchi, F; Boger, E; Boyko, I; Briere, R A; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, H Y; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, X R; Chen, Y B; Cheng, H P; Chu, X K; Cibinetto, G; Dai, H L; Dai, J P; Dbeyssi, A; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; De Mori, F; Ding, Y; Dong, C; Dong, J; Dong, L Y; Dong, M Y; Du, S X; Duan, P F; Eren, E E; Fan, J Z; Fang, J; Fang, S S; Fang, X; Fang, Y; Fava, L; Feldbauer, F; Felici, G; Feng, C Q; Fioravanti, E; Fritsch, M; Fu, C D; Gao, Q; Gao, X Y; Gao, Y; Gao, Z; Garzia, I; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, Y; Guo, Y P; Haddadi, Z; Hafner, A; Han, S; Hao, X Q; Harris, F A; He, K L; He, X Q; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Hu, Y; Huang, G M; Huang, G S; Huang, J S; Huang, X T; Huang, Y; Hussain, T; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, L W; Jiang, X S; Jiang, X Y; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Johansson, T; Julin, A; Kalantar-Nayestanaki, N; Kang, X L; Kang, X S; Kavatsyuk, M; Ke, B C; Kiese, P; Kliemt, R; Kloss, B; Kolcu, O B; Kopf, B; Kornicer, M; Kuehn, W; Kupsc, A; Lange, J S; Lara, M; Larin, P; Leng, C; Li, C; Li, Cheng; Li, D M; Li, F; Li, F Y; Li, G; Li, H B; Li, J C; Li, Jin; Li, K; Li, Lei; Li, P R; Li, T; Li, W D; Li, W G; Li, X L; Li, X M; Li, X N; Li, X Q; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Lin, D X; Liu, B J; Liu, C L; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H B; Liu, H H; Liu, H M; Liu, J; Liu, J B; Liu, J P; Liu, J Y; Liu, K; Liu, K Y; Liu, L D; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, Y B; Liu, Z A; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, H J; Lu, J G; Lu, Y; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lyu, X R; Ma, F C; Ma, H L; Ma, L L; Ma, Q M; Ma, T; Ma, X N; Ma, X Y; Maas, F E; Maggiora, M; Mao, Y J; Mao, Z P; Marcello, S; Messchendorp, J G; Min, J; Mitchell, R E; Mo, X H; Mo, Y J; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nerling, F; Nikolaev, I B; Ning, Z; Nisar, S; Niu, S L; Niu, X Y; Olsen, S L; Ouyang, Q; Pacetti, S; Patteri, P; Pelizaeus, M; Peng, H P; Peters, K; Pettersson, J; Ping, J L; Ping, R G; Poling, R; Prasad, V; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, N; Qin, X S; Qin, Z H; Qiu, J F; Rashid, K H; Redmer, C F; Ripka, M; Rong, G; Rosner, Ch; Ruan, X D; Santoro, V; Sarantsev, A; Savrié, M; Schoenning, K; Schumann, S; Shan, W; Shao, M; Shen, C P; Shen, P X; Shen, X Y; Sheng, H Y; Song, W M; Song, X Y; Sosio, S; Spataro, S; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Tiemens, M; Ullrich, M; Uman, I; Varner, G S; Wang, B; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, S G; Wang, W; Wang, X F; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z H; Wang, Z Y; Weber, T; Wei, D H; Wei, J B; Weidenkaff, P; Wen, S P; Wiedner, U; Wolke, M; Wu, L H; Wu, Z; Xia, L G; Xia, Y; Xiao, D; Xiao, H; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, L; Xu, Q J; Xu, X P; Yan, L; Yan, W B; Yan, W C; Yan, Y H; Yang, H J; Yang, H X; Yang, L; Yang, Y; Yang, Y X; Ye, M; Ye, M H; Yin, J H; Yu, B X; Yu, C X; Yu, J S; Yuan, C Z; Yuan, W L; Yuan, Y; Yuncu, A; Zafar, A A; Zallo, A; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J J; Zhang, J L; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, K; Zhang, L; Zhang, X Y; Zhang, Y; Zhang, Y N; Zhang, Y H; Zhang, Y T; Zhang, Yu; Zhang, Z H; Zhang, Z P; Zhang, Z Y; Zhao, G; Zhao, J W; Zhao, J Y; Zhao, J Z; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, Q W; Zhao, S J; Zhao, T C; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, W J; Zheng, Y H; Zhong, B; Zhou, L; Zhou, X; Zhou, X K; Zhou, X R; Zhou, X Y; Zhu, K; Zhu, K J; Zhu, S; Zhu, S H; Zhu, X L; Zhu, Y C; Zhu, Y S; Zhu, Z A; Zhuang, J; Zotti, L; Zou, B S; Zou, J H

    2015-01-01

    A neutral structure in the $D\\bar{D}^{*}$ system around the $D\\bar{D}^{*}$ mass threshold is observed with a statistical significance greater than 10$\\sigma$ in the processes $e^{+}e^{-}\\rightarrow D^{+}D^{*-}\\pi^{0}+c.c.$ and $e^{+}e^{-}\\rightarrow D^{0}\\bar{D}^{*0}\\pi^{0}+c.c.$ at $\\sqrt{s}$ = 4.226 and 4.257 GeV in the BESIII experiment. The structure is denoted as $Z_{c}(3885)^{0}$. Assuming the presence of a resonance, its pole mass and width are determined to be ($3885.7^{+4.3}_{-5.7}$(stat.)$\\pm 8.4$(syst.))~MeV/$c^{2}$ and ($35^{+11}_{-12}$(stat.)$ \\pm 15$(syst.))~MeV, respectively. The Born cross sections are measured to be $\\sigma(e^{+}e^{-}\\to Z_{c}(3885)^{0}\\pi^{0}, Z_{c}(3885)^{0} \\to D\\bar{D}^{*})=(77 \\pm 13$(stat.)$\\pm 17$(syst.)) pb at 4.226 GeV and ($47 \\pm 9$(stat.)$ \\pm 10$(syst.)) pb at 4.257 GeV. The ratio of decay rates $\\frac{\\mathcal{B}({Z_{c}(3885)^{0} \\to D^{+}D^{*-}+c.c.})}{\\mathcal{B}({Z_{c}(3885)^{0} \\to D^{0}\\bar{D}^{*0}+c.c.})}$ is determined to be $0.96 \\pm 0.18$(stat.)$\\pm 0.1...

  18. Preparation of Calcined Zirconia-Carbon Composite from Metal Organic Frameworks and Its Application to Adsorption of Crystal Violet and Salicylic Acid

    Directory of Open Access Journals (Sweden)

    Zubair Hasan

    2016-03-01

    Full Text Available Zirconia-carbon (ZC composites were prepared via calcination of Zr-based metal organic frameworks, UiO-66 and amino-functionalized UiO-66, under N2 atmosphere. The prepared composites were characterized using a series of instrumental analyses. The surface area of the ZC composites increased with the increase of calcination temperature, with the formation of a graphite oxide phase observed at 900 °C. The composites were used for adsorptive removal of a dye (crystal violet, CV and a pharmaceutical and personal care product (salicylic acid, SA. The increase of the calcination temperature resulted in enhanced adsorption capability of the composites toward CV. The composite calcined at 900 °C exhibited a maximum uptake of 243 mg·g−1, which was much greater than that by a commercial activated carbon. The composite was also effective in SA adsorption (102 mg·g−1, and N-functionalization of the composite further enhanced its adsorption capability (109 mg·g−1. CV adsorption was weakly influenced by solution pH, but was more dependent on the surface area and pore volume of the ZC composite. Meanwhile, SA adsorption showed strong pH dependence, which implies an active role of electrostatic interactions in the adsorption process. Base-base repulsion and hydrogen bonding are also suggested to influence the adsorption of CV and SA, especially for the N-functionalized composite.

  19. CBC bound proteins and RNA fate

    DEFF Research Database (Denmark)

    Giacometti, Simone

    ) complex (CBCN), were recently shown to target capped RNA either toward export or degradation, but the mechanisms by which they can discriminate between different RNA families and route them toward different metabolic pathways still remain unclear. A major question to be answered is how and when...... analysed NEXT-component RBM7. We report that: (i) CBP20, ARS2, PHAX and ZC3H18 bind close to the cap, while RBM7 and MTR4 bind throughout the mRNA body; (ii) CBP20, ARS2, PHAX and ZC3H18 associate with a broad set of RNA polymerase II (PolII)-derived RNAs and have only mild species preferences; (iii......) binding varies with the RNA maturation stage, with the CBC being highly enriched on mature mRNA, ARS2/PHAX/ZC3H18/MTR4 less so, and RMB7 preferentially bound to pre-mRNAs; (iv) MTR4 and RBM7 show different specificities, with RBM7 being highly enriched on introns and promoter upstream transcripts (PROMPTs...

  20. Estimation of subcriticality with the computed values. 3. Application of `indirect estimation method for calculation error` to exponential experiment

    Energy Technology Data Exchange (ETDEWEB)

    Sakurai, Kiyoshi; Arakawa, Takuya; Yamamoto, Toshihiro; Naito, Yoshitaka [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment

    1996-08-01

    Estimation accuracy for subcriticality on `Indirect Estimation Method for Calculation Error` is expressed in form of {rho}{sub m} - {rho}{sub C} = K ({gamma}{sub zc}{sup 2} - {gamma}{sub zm}{sup 2}). This expression means that estimation accuracy for subcriticality is proportional to ({gamma}{sub zc}{sup 2} - {gamma}{sub zm}{sup 2}) as estimation accuracy of buckling for axial direction. The proportional constant K is calculated, but the influence of the uncertainty of K to estimation accuracy for subcriticality is smaller than in case of comparison for {rho}{sub m} = -K ({gamma}{sub zm}{sup 2} + B{sub z}{sup 2}) with calculated {rho}{sub c}. When the values of K were calculated, the estimation accuracy is kept enough. If {gamma}{sub zc}{sup 2} equal to {gamma}{sub zm}{sup 2}, {rho}{sub c} equal to {rho}{sub m}. Reliability of this method is shown on base of results in which are calculated using MCNP 4A for four subcritical cores of TCA. (author)

  1. Relationship between abnormal sperm morphology induced by dietary zinc deficiency and lipid composition in testes of growing rats.

    Science.gov (United States)

    Merrells, Krystal J; Blewett, Heather; Jamieson, Jennifer A; Taylor, Carla G; Suh, Miyoung

    2009-07-01

    The present study investigated the effect of dietary Zn deficiency during sexual maturation on sperm integrity and testis phospholipid fatty acid composition. Male weanling Sprague-Dawley rats were randomised into four dietary groups for 3 weeks: Zn control (ZC; 30 mg Zn/kg); Zn marginally deficient (ZMD; 9 mg Zn/kg); Zn deficient (ZD; rats fed the ZD diet had a lower testis weight (P Rats fed the ZD diet, but not the ZMD diet, had 34-35 % more abnormal spermatozoa and 24 % shorter sperm tail length than the ZC and PF rats (P rats compared with the ZC and PF rats (P rats, whereas 18 : 2n-6 was higher compared with the rats in the other diet groups. These results demonstrate that severe Zn deficiency adversely affects sperm integrity and modulates testis fatty acid composition by interrupting essential fatty acid metabolism. This suggests that Zn deficiency-associated abnormal testicular function is perhaps preceded by altered membrane fatty acid composition, especially of a major fatty acid, 22 : 5n-6.

  2. Three-body quantum Coulomb problem: Analytic continuation

    Science.gov (United States)

    Turbiner, A. V.; Lopez Vieyra, J. C.; Olivares Pilón, H.

    2016-08-01

    The second (unphysical) critical charge in the three-body quantum Coulomb system of a nucleus of positive charge Z and mass mp, and two electrons, predicted by Stillinger has been calculated to be equal to ZB∞ = 0.904854 and ZBmp = 0.905138 for infinite and finite (proton) mass mp, respectively. It is shown that in both cases, the ground state energy E(Z) (analytically continued beyond the first critical charge Zc, for which the ionization energy vanishes, to ReZ <Zc) has a square-root branch point with exponent 3/2 at Z = ZB in the complex Z-plane. Based on analytic continuation, the second, excited, spin-singlet bound state of negative hydrogen ion H- is predicted to be at -0.51554 a.u. (-0.51531 a.u. for the finite proton mass mp). The first critical charge Zc is found accurately for a finite proton mass mp in the Lagrange mesh method, Zcmp = 0.911069724655.

  3. Study of baryon acoustic oscillations with SDSS DR12 data and measurements of $\\Omega_k$ and $\\Omega_\\textrm{DE}(a)$. Part II

    CERN Document Server

    Hoeneisen, B

    2016-01-01

    We define Baryon Acoustic Oscillation (BAO) observables $\\hat{d}_\\alpha(z, z_c)$, $\\hat{d}_z(z, z_c)$, and $\\hat{d}_/(z, z_c)$ that do not depend on any cosmological parameter. From each of these observables we recover the BAO correlation length $d_\\textrm{BAO}$ with its respective dependence on cosmological parameters. These BAO observables are measured as a function of redshift $z$ with the Sloan Digital Sky Survey (SDSS) data release DR12. From the BAO measurements alone, or together with the correlation angle $\\theta_\\textrm{MC}$ of the Cosmic Microwave Background (CMB), we constrain the curvature parameter $\\Omega_k$ and the dark energy density $\\Omega_\\textrm{DE}(a)$ as a function of the expansion parameter $a$ in several scenarios. These observables are further constrained with external measurements of $h$ and $\\Omega_\\textrm{b} h^2$. We find some tension between the data and a cosmology with flat space and constant dark energy density $\\Omega_\\textrm{DE}(a)$.

  4. Cooperative Caching in Mobile Ad Hoc Networks Based on Data Utility

    Directory of Open Access Journals (Sweden)

    Narottam Chand

    2007-01-01

    Full Text Available Cooperative caching, which allows sharing and coordination of cached data among clients, is a potential technique to improve the data access performance and availability in mobile ad hoc networks. However, variable data sizes, frequent data updates, limited client resources, insufficient wireless bandwidth and client's mobility make cache management a challenge. In this paper, we propose a utility based cache replacement policy, least utility value (LUV, to improve the data availability and reduce the local cache miss ratio. LUV considers several factors that affect cache performance, namely access probability, distance between the requester and data source/cache, coherency and data size. A cooperative cache management strategy, Zone Cooperative (ZC, is developed that employs LUV as replacement policy. In ZC one-hop neighbors of a client form a cooperation zone since the cost for communication with them is low both in terms of energy consumption and message exchange. Simulation experiments have been conducted to evaluate the performance of LUV based ZC caching strategy. The simulation results show that, LUV replacement policy substantially outperforms the LRU policy.

  5. Relationship between the density of supercritical CO2 +ethanol binary system and its critical properties

    Institute of Scientific and Technical Information of China (English)

    张敬畅; 张建军; 曹维良

    2003-01-01

    The dependent relation between temperature and pressure of supercritical CO2 + ethanol binary system under the pressure range from 5 to 10 MPa with the variety of densities and mole fractions of ethanol that range from 0 to 2% was investigated by the static visual method in a constant volume. The critical temperature and pressure were experimentally determined simultaneously. The PTρ figures at different ethanol contents were described based on the determined pressure and temperature data, from which pressure of supercritical CO2 + ethanol binary system was found to increase linearly with the increasing temperature. P-T lines show certain convergent feature in a specific concentration of ethanol and the convergent points shift to the region of higher temperature and pressure with the increasing ethanol compositions. Furthermore, the effect of density and ethanol concentration on the critical point of CO2 + ethanol binary system was discussed in details. Critical points increase linearly with the increasing mole fraction of ethanol in specific density and critical points change at different densities. The critical compressibility factors Zc of supercritical CO2 + ethanol binary systems at different compositions of ethanol were calculated and Zc-ρ figure was obtained accordingly. It was found from Zc-ρ figure that critical compressibility factors of supercritical CO2 unitary or binary systems decline linearly with the increasing density, by which the critical point can be predicted precisely.

  6. Synthesis, biocompatibility and mechanical properties of ZrO2-Al2O3 ceramics composites.

    Science.gov (United States)

    Nevarez-Rascon, Alfredo; González-Lopez, Santiago; Acosta-Torres, Laura Susana; Nevarez-Rascon, Martina Margarita; Orrantia-Borunda, Erasmo

    2016-01-01

    This study evaluated cell viability, microhardness and flexural strength of two ceramic composites systems (ZA and AZ), pure alumina and zirconia. There were prepared homogeneous mixtures of 78wt%Al2O3+20wt%3Y-TZP+2wt%Al2O3w (AZ) and 80wt%3YTZP+18wt%Al2O3+2wt%Al2O3w (ZA), as well as 3Y-TZP (Z), pure Al2O3 (A) and commercial monolithic 3Y-TZP (Zc). Also mouse fibroblast cells 3T3-L1 and a MTT test was carried out at 24, 48 and 72 h. The surfaces were observed with SEM and the microhardness and three-point flexural strength values were estimated. The absolute microhardness values were: A>AZ>Z>Zc>ZA. Flexural strength of Zc, Z, and ZA were around double than AZ and A. All groups showed high biocompatibility trough cell viability values at 24, 48 and 72 h. Factors like grain shape, grain size and homogeneous or heterogeneous grain distributions may play an important role in physical, mechanical and biological properties of the ceramic composites.

  7. Effect of zinc-deficient diet on oral tissues and periodontal indices in rats.

    Science.gov (United States)

    Seyedmajidi, Seyed Ali; Seyedmajidi, Maryam; Moghadamnia, Aliakbar; Khani, Zohreh; Zahedpasha, Samir; Jenabian, Niloofar; Jorsaraei, Gholamali; Halalkhor, Sohrab; Motallebnejad, Mina

    2014-01-01

    Zinc (Zn) as a nutritional factor affects the health of the oral tissues. This study was done for the evaluation of the effects of zinc deficiency on the oral tissues of rats. The study was carried out on 14 male Wistar rats, cessation of lactation on the 24(th) day after birth. The rats were randomly divided into two groups. Zinc deficient (ZD) diet was used for one group and another group was fed with a zinc-containing (ZC) diet. The alterations of the oral tissues in both groups were evaluated clinically after four weeks. Also the gingival index and periodontal pocket depth were recorded. The measurement of serum zinc level was done by atomic absorption spectrophotometry. The microscopic slides of oral tissue specimen were evaluated quantitatively. The serum zinc level of the ZD rats was lower than the ZC group (pkeratin thickening between two groups. This study indicated that oral and periodontal health was better in ZC rats than in ZD rats. Aphthous lesions were more prominent in ZD rats. This study confirmed that zinc deficiency may endanger oral and periodo ntal structures.

  8. Proteomic indicators of oxidation and hydration state in colorectal cancer

    Directory of Open Access Journals (Sweden)

    Jeffrey M. Dick

    2016-07-01

    Full Text Available New integrative approaches are needed to harness the potential of rapidly growing datasets of protein expression and microbial community composition in colorectal cancer. Chemical and thermodynamic models offer theoretical tools to describe populations of biomacromolecules and their relative potential for formation in different microenvironmental conditions. The average oxidation state of carbon (ZC can be calculated as an elemental ratio from the chemical formulas of proteins, and water demand per residue ( ${\\overline{n}}_{{\\mathrm{H}}_{2}\\mathrm{O}}$ n ¯ H 2 O is computed by writing the overall formation reactions of proteins from basis species. Using results reported in proteomic studies of clinical samples, many datasets exhibit higher mean ZC or ${\\overline{n}}_{{\\mathrm{H}}_{2}\\mathrm{O}}$ n ¯ H 2 O of proteins in carcinoma or adenoma compared to normal tissue. In contrast, average protein compositions in bacterial genomes often have lower ZC for bacteria enriched in fecal samples from cancer patients compared to healthy donors. In thermodynamic calculations, the potential for formation of the cancer-related proteins is energetically favored by changes in the chemical activity of H2O and fugacity of O2 that reflect the compositional differences. The compositional analysis suggests that a systematic change in chemical composition is an essential feature of cancer proteomes, and the thermodynamic descriptions show that the observed proteomic transformations in host tissue could be promoted by relatively high microenvironmental oxidation and hydration states.

  9. Arranjo espacial na creche: espaços para interagir, brincar isoladamente, dirigir-se socialmente e observar o outro

    Directory of Open Access Journals (Sweden)

    Meneghini Renata

    2003-01-01

    Full Text Available Objetivando comparar a preferência de ocupação por áreas espaciais durante a ocorrência de interação criança-criança, atividade individual, espectador e comportamento socialmente dirigido, analisou-se a distribuição espacial de crianças de 2-3 anos da creche universitária do Campus-USP-Ribeirão Preto(SP. Foram analisados os vídeos coletados em estudo anterior, por 3 câmeras automáticas de videoteipe em 3 fases, todas com pelo menos uma zona circunscrita (ZC: FI-estantes com superfície de apoio delimitando uma ZC e duas áreas sem circunscrição (5 sessões; FII-2 ZCs, com e sem superfície de apoio (5 sessões; FIII-3 ZCs, duas da fase anterior e uma cabana (4 sessões. A análise por minuto das localizações infantis evidenciou que espectador ocorreu preferencialmente na área ao redor do adulto (diferença significativa nas Fases I e II e as demais categorias ocorreram preferencialmente na ZC com apoio, havendo redução significativa de interações na área do adulto na FIII.

  10. Temporal and spatial variations of seismicity scaling behavior in Southern México

    Science.gov (United States)

    Alvarez-Ramirez, J.; Echeverria, J. C.; Ortiz-Cruz, A.; Hernandez, E.

    2012-03-01

    R/S analysis is used in this work to investigate the fractal correlations in terms of the Hurst exponent for the 1998-2011 seismicity data in Southern Mexico. This region is the most seismically active area in Mexico, where epicenters for severe earthquakes (e.g., September 19, 1985, Mw = 8.1) causing extensive damage in highly populated areas have been located. By only considering the seismic events that meet the Gutenberg-Ritcher law completeness requirement ( b = 0.97, MGR = 3.6), we found time clustering for scales of about 100 and 135 events. In both cases, a cyclic behavior with dominant spectral components at about one cycle per year is revealed. It is argued that such a one-year cycle could be related to tidal effects in the Pacific coast. Interestingly, it is also found that high-magnitude events ( Mw ≥ 6.0) are more likely to occur under increased interevent correlations with Hurst exponent values H > 0.65. This suggests that major earthquakes can occur when the tectonic stress accumulates in preferential directions. In contrast, the high-magnitude seismic risk is reduced when stresses are uniformly distributed in the tectonic shell. Such cointegration between correlations (i.e., Hurst exponent) and macroseismicity is confirmed for spatial variations of the Hurst exponent. In this way, we found that, using the Hurst exponent standpoint, the former presumed Michoacan and the Guerrero seismic gaps are the riskiest seismic zones. To test this empirical finding, two Southern Mexico local regions with large earthquakes were considered. These are the Atoyac de Alvarez, Guerrero ( Mw = 6.3), and Union Hidalgo, Oaxaca ( Mw = 6.6), events. In addition, we used the Loma Prieta, California, earthquake (October 17, 1989, Mw = 6.9) to show that the high-magnitude earthquakes in the San Andreas Fault region can also be linked to the increments of determinism (quantified in terms of the Hurst exponent) displayed by the stochastic dynamics of the interevent period time

  11. Evolution of symmetric reconnection layer in the presence of parallel shear flow

    Energy Technology Data Exchange (ETDEWEB)

    Lu Haoyu [Space Science Institute, School of Astronautics, Beihang University, Beijing 100191 (China); Sate Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190 (China); Cao Jinbin [Space Science Institute, School of Astronautics, Beihang University, Beijing 100191 (China)

    2011-07-15

    The development of the structure of symmetric reconnection layer in the presence of a shear flow parallel to the antiparallel magnetic field component is studied by using a set of one-dimensional (1D) magnetohydrodynamic (MHD) equations. The Riemann problem is simulated through a second-order conservative TVD (total variation diminishing) scheme, in conjunction with Roe's averages for the Riemann problem. The simulation results indicate that besides the MHD shocks and expansion waves, there exist some new small-scale structures in the reconnection layer. For the case of zero initial guide magnetic field (i.e., B{sub y0} = 0), a pair of intermediate shock and slow shock (SS) is formed in the presence of the parallel shear flow. The critical velocity of initial shear flow V{sub zc} is just the Alfven velocity in the inflow region. As V{sub z{infinity}} increases to the value larger than V{sub zc}, a new slow expansion wave appears in the position of SS in the case V{sub z{infinity}} < V{sub zc}, and one of the current densities drops to zero. As plasma {beta} increases, the out-flow region is widened. For B{sub y0} {ne} 0, a pair of SSs and an additional pair of time-dependent intermediate shocks (TDISs) are found to be present. Similar to the case of B{sub y0} = 0, there exists a critical velocity of initial shear flow V{sub zc}. The value of V{sub zc} is, however, smaller than the Alfven velocity of the inflow region. As plasma {beta} increases, the velocities of SS and TDIS increase, and the out-flow region is widened. However, the velocity of downstream SS increases even faster, making the distance between SS and TDIS smaller. Consequently, the interaction between SS and TDIS in the case of high plasma {beta} influences the property of direction rotation of magnetic field across TDIS. Thereby, a wedge in the hodogram of tangential magnetic field comes into being. When {beta}{yields}{infinity}, TDISs disappear and the guide magnetic field becomes constant.

  12. CONTENIDO DE POLIAMINAS LIBRES EN PALMAS AFECTADAS POR PUDRICIÓN DEL COGOLLO EN LAS ZONAS CENTRAL Y OCCIDENTAL DE COLOMBIA

    Directory of Open Access Journals (Sweden)

    VIVIANA CORREA

    2010-01-01

    Full Text Available La pudrición del cogollo (PC es la principal enfermedad de la palma en Colombia. En las zonas palmeras Central (ZC y Oriental (ZOR, las palmas enfermas pueden recuperarse naturalmente. En la Zona Occidental (ZOCC el proceso de recuperación no es evidente. La recuperación de palmas está ligada a gran actividad meristemática que podría involucrar la acción de metabolitos como las poliaminas (PA. Este trabajo muestra la relación entre el contenido de poliaminas en el meristemo y la capacidad de recuperación de palmas con PC, en dos zonas agroclimáticas diferentes. Poliaminas extraídas del meristemo de palmas en ZC y ZOCC, fueron analizadas por HPLC. En ZC, donde existe recuperación espontánea, los niveles más altos de PA se presentan en palmas sanas y en recuperación y a medida que avanza la enfermedad la concentración desciende hasta un mínimo en el estado de PC inicial. Luego la concentración de PA aumenta hasta el estado de buena recuperación donde los valores de poliaminas son más altos que los de palmas sanas. En la ZOCC, el contenido de PA aumenta con la enfermedad llegando al máximo en plantas sin recuperación y el mínimo en plantas sanas. Las diferencias entre zonas pueden explicarse por los diferentes roles de las poliaminas en plantas. En la ZC la cantidad elevada de PA en palmas sanas o en recuperación funcionaría en la inducción de actividad meristemática, para la recuperación espontánea. En la ZOCC el aumento en el contenido de PA con la enfermedad puede estar relacionado con la producción de especies reactivas de oxígeno para defensa secundaria contra patógenos. A diferencia de lo observado en ZC, las plantas en ZOCC no pueden producir estructuras sanas que no sean reinfectadas, por lo tanto los contenidos elevados de PA no están relacionados con la promoción de la actividad meristemática.

  13. ANALYSIS OF TURKISH NATIVE SPEAKERS’ PERCEPTION OF LOAN WORDS BORROWED FROM WESTERN LANGUAGES YABANCI SÖZCÜKLERİN DOĞAL DİL KONUŞMACILARINCA ALGILANIŞININ İNCELENMESİ

    Directory of Open Access Journals (Sweden)

    Nafi YALÇIN

    2010-10-01

    Full Text Available There has been an influx of loan words into Turkish from Western European languages, especially from English for almost two centuries. Great increase in the number of loan words brings up worries about gradual change of phonological features and rules dominating the language. In this paper we consider how native speakers approach the loan words being used in Turkish and whether degrees of “acceptance” of and “alienation” from loan words show certain tendencies or not and finally what relationships there are between these tendencies and native speaker characteristics such as gender, job and educational level.It is normally expected that native speaker intuition for loan words may vary according to their personal characteristics. By analyzing the tendencies of native speakers in perceiving loan words and by finding out the relationship between tendencies and characteristics we may come up with suggestions about attitudes to be assumed and measures to be taken against the use of loan words in Turkish. Son iki yüzyılda Batı Avrupa dillerinden Türkçeye yabancı sözcükler hızlı bir biçimde girmiştir. Dilde yabancı sözcük sayısının hızla artması, hem sözcük dağarcığının yabancılaşmasını, hem de dilin kendine özgü özellik ve kuralların bozulması gibi endişeleri beraberinde getirmiştir. Bu çalışmada Türkçede kullanılmaya başlanan yabancı sözcüklerin anadil konuşmacıları tarafından nasıl algılandıkları; yabancı sözcüklerin “benimsenme” ve “yabancılık” oranlarının belli özellikler gösterip göstermediği ve eğitim düzeyi, cinsiyet ve meslek gibi özelliklerle ilişkisinin ne olduğu ele alınmıştır. Yabancı sözcüklere yönelik algılama biçimlerinin ve eğilimlerin belirlenmesinin, Türkçeye yabancı sözcüklerin girmesine karşı alınacak önlemlerin tespitinde yararlı olacağı değerlendirilmektedir. Araştırma verilerinin incelenmesi ve de

  14. Fractals with point impact in functional linear regression

    CERN Document Server

    McKeague, Ian W; 10.1214/10-AOS791

    2010-01-01

    This paper develops a point impact linear regression model in which the trajectory of a continuous stochastic process, when evaluated at a sensitive time point, is associated with a scalar response. The proposed model complements and is more interpretable than the functional linear regression approach that has become popular in recent years. The trajectories are assumed to have fractal (self-similar) properties in common with a fractional Brownian motion with an unknown Hurst exponent. Bootstrap confidence intervals based on the least-squares estimator of the sensitive time point are developed. Misspecification of the point impact model by a functional linear model is also investigated. Non-Gaussian limit distributions and rates of convergence determined by the Hurst exponent play an important role.

  15. The scaling behavior of hand motions reveals self-organization during an executive function task

    Science.gov (United States)

    Anastas, Jason R.; Stephen, Damian G.; Dixon, James A.

    2011-05-01

    Recent approaches to cognition explain cognitive phenomena in terms of interaction-dominant dynamics. In the current experiment, we extend this approach to executive function, a construct used to describe flexible, goal-oriented behavior. Participants were asked to perform a widely used executive function task, card sorting, under two conditions. In one condition, participants were given a rule with which to sort the cards. In the other condition, participants had to induce the rule from experimenter feedback. The motion of each participant’s hand was tracked during the sorting task. Detrended fluctuation analysis was performed on the inter-point time series using a windowing strategy to capture changes over each trial. For participants in the induction condition, the Hurst exponent sharply increased and then decreased. The Hurst exponents for the explicit condition did not show this pattern. Our results suggest that executive function may be understood in terms of changes in stability that arise from interaction-dominant dynamics.

  16. Financial Crisis: A New Measure for Risk of Pension Fund Portfolios.

    Science.gov (United States)

    Cadoni, Marinella; Melis, Roberta; Trudda, Alessandro

    2015-01-01

    It has been argued that pension funds should have limitations on their asset allocation, based on the risk profile of the different financial instruments available on the financial markets. This issue proves to be highly relevant at times of market crisis, when a regulation establishing limits to risk taking for pension funds could prevent defaults. In this paper we present a framework for evaluating the risk level of a single financial instrument or a portfolio. By assuming that the log asset returns can be described by a multifractional Brownian motion, we evaluate the risk using the time dependent Hurst parameter H(t) which models volatility. To provide a measure of the risk, we model the Hurst parameter with a random variable with mixture of beta distribution. We prove the efficacy of the methodology by implementing it on different risk level financial instruments and portfolios.

  17. Fluctuation analysis of high frequency electric power load in the Czech Republic

    CERN Document Server

    Kracík, Jiří

    2016-01-01

    We analyze the electric power load in the Czech Republic (CR) which exhibits a seasonality as well as other oscillations typical for European countries. Moreover, we detect 1/f noise property of electrical power load with extra additional peaks that allows to separate it into a deterministic and stochastic part. We then focus on the analysis of the stochastic part using improved Multi-fractal Detrended Fluctuation Analysis method (MFDFA) to investigate power load datasets with a minute resolution. Extracting the noise part of the signal by using Fourier transform allows us to apply this method to obtain the fluctuation function and to estimate the generalized Hurst exponent together with the correlated Hurst exponent, its improvement for the non-Gaussian datasets. The results exhibit a strong presence of persistent behaviour and the dataset is characterized by a non-Gaussian skewed distribution. There are also indications for the presence of the probability distribution that has heavier tail than the Gaussian...

  18. Fluctuations of the Concentration of Cs-137 Aerosol in Chernobyl,Fukushima and Kawasaki

    Science.gov (United States)

    Ota, Yohei; Hatano, Yuko; Okada, Yukiko; Hirose, Katsumi

    2017-04-01

    Statistical analysis is applied to a time series of the airborne concentration of Cs-137. In order to extract fractal characteristics of the fluctuations, we employed the Hurst analysis. Interestingly, the Hurst index is around 1/3, which is common to the Chernobyl data, Fukushima data, and Kawasaki data. The Kawasaki data is measured by the Tokyo City University, located at 40km south to Tokyo. We proposed a stochastic differential equation, based on an advection equation with winds fluctuating probabilistically. The averaged solution of the equation is compared with measured data. We found that the index of the power of the time is -4/3, which is common to the three cases, Chernobyl, Fukushima and Kawasaki.

  19. Effect of Trader Composition on Stock Market

    Institute of Scientific and Technical Information of China (English)

    WANG Mo-Gei; WANG XING-Yuan; LIU Zhen-Zhen

    2011-01-01

    In this study, we build a double auction market model, which contains two types of agent traders, i.e., the noise traders and fundamentalists, to investigate the effect of the trader composition on the stock market.It is found that, the non-trivial Hurst exponent and the fat-tailed distribution of transaction prices can be observed at any ratio of the noise traders.Analyses on the price variation properties, including the Hurst exponent and the price variation region,show that these properties are stable when the ratio is moderate.However, the non-price variation properties, including the trading volume and the profitability of the two kinds of agents, do not keep stable untrivially in any interval of the ratio of noise traders.

  20. Scaling and memory in the return intervals of energy dissipation rate in three-dimensional fully developed turbulence

    CERN Document Server

    Liu, Chuang; Ren, Fei; Zhou, Wei-Xing

    2008-01-01

    We study the statistical properties of return intervals $r$ between successive energy dissipation rates above a certain threshold $Q$ in three-dimensional fully developed turbulence. We find that the distribution function $P_Q(r)$ scales with the mean return interval $R_Q$ as $P_Q(r)=R_Q^{-1}f(r/R_Q)$ except for $r=1$, where the scaling function $f(x)$ has two power-law regimes. The return intervals are short-term and long-term correlated and possess multifractal nature. The Hurst index of the return intervals decays exponentially against $R_Q$, predicting that rare extreme events with $R_Q\\to\\infty$ are also long-term correlated with the Hurst index $H_\\infty=0.639$.

  1. Complex Network Approach to the Fractional Time Series

    CERN Document Server

    Manshour, Pouya

    2015-01-01

    In order to extract the correlation information inherited in a stochastic time series, the visibility graph algorithm has been recently proposed, by which a time series can be mapped onto a complex network. We demonstrate that the visibility algorithm is not an appropriate one to study the correlation aspects of a time series. We then employ the horizontal visibility algorithm, as a much simpler one, to map the fractional processes onto complex networks. The parabolic exponential functions are found to ?fit with the corresponding degree distributions, with Hurst dependent ?fitting parameter. Further, we take into account other topological properties such as the maximum eigenvalue of the adjacency matrix and the degree assortativity, and show that such topological quantities can also be used to predict the Hurst exponent, with an exception for the antipersistent fractional Gaussian noises. To solve this problem, we take into account the Spearman correlation coefficient between the node's degree and its corresp...

  2. Multifractal analysis of spot rates in tanker markets and their comparisons with crude oil markets

    Science.gov (United States)

    Zheng, Shiyuan; Lan, Xiangang

    2016-02-01

    This paper investigates the dynamic features of the spot rates for VLCC/ULCC, Suezmax, Aframax, Panamax and Handysize tanker markets by means of multifractal detrended fluctuation analysis (MF-DFA). The Hurst exponents, especially the time-dependent Hurst exponents, of the daily rate returns are calculated to capture the fractal properties of these different tanker markets. The origins of multifractility in these markets are identified by comparing their multifractal scaling exponents based on the original data, the shuffled data and the surrogate data. Furthermore, the non-periodic cycles for these markets are detected by the V-statistic. Finally, the comparisons of the fractal properties between the tanker markets and the crude oil commodity markets suggest that the tanker markets are more fractal than their upstream counterparts.

  3. Porosity-dependent fractal nature of the porous silicon surface

    Energy Technology Data Exchange (ETDEWEB)

    Rahmani, N.; Dariani, R. S., E-mail: dariani@alzahra.ac.ir [Department of Physics, Alzahra University, Tehran, 1993893973 (Iran, Islamic Republic of)

    2015-07-15

    Porous silicon films with porosity ranging from 42% to 77% were fabricated by electrochemical anodization under different current density. We used atomic force microscopy and dynamic scaling theory for deriving the surface roughness profile and processing the topography of the porous silicon layers, respectively. We first compared the topography of bare silicon surface with porous silicon and then studied the effect of the porosity of porous silicon films on their scaling behavior by using their self-affinity nature. Our work demonstrated that silicon compared to the porous silicon films has the highest Hurst parameter, indicating that the formation of porous layer due to the anodization etching of silicon surface leads to an increase of its roughness. Fractal analysis revealed that the evolution of the nanocrystallites’ fractal dimension along with porosity. Also, we found that both interface width and Hurst parameter are affected by the increase of porosity.

  4. Size matters: some stylized facts of the market revisited

    CERN Document Server

    Eisler, Z

    2006-01-01

    We reanalyze high resolution data from the New York Stock Exchange and find a monotonous (but not power law) variation of the mean value per trade, the mean number of trades per minute and the mean trading activity with company capitalization. We show that the second moment of the traded value distribution is finite. Consequently, the Hurst exponents for the corresponding time series can be calculated. These are, however, non-universal: The persistence increases with larger capitalization and this results in a logarithmically increasing Hurst exponent. A similar trend is displayed by intertrade time intervals. Finally, we demonstrate that the distribution of the intertrade times is better described by a multiscaling ansatz than by simple gap scaling.

  5. World Expo 2010 Pavilions Clustering Analysis Based on Self-Organizing Map

    Institute of Scientific and Technical Information of China (English)

    LI Qianqian; GU Jifa

    2016-01-01

    This paper reports the classification of 90 sample pavilions in Shanghai World Expo.An artificial intelligence based nonlinear clustering method known as Self-Organizing Map (SOM) has been used to classify expo pavilions.SOM is an efficient tool for visualization of multidimensional data.To conduct the classification,four characteristics namely Hurst exponent for queue length,Hurst exponent for waiting time,mean queue length and mean waiting time have been applied.The classification results show that Shanghai World Expo pavilions can be optimally classified into four classes.This result will shed light on further studies that how to manage the queue of World Expo pavilions in the future.

  6. TESTING THE LONG RANGE-DEPENDENCE FOR THE CENTRAL EASTERN EUROPEAN AND THE BALKANS STOCK MARKETS

    Directory of Open Access Journals (Sweden)

    Pece Andreea Maria

    2013-07-01

    Full Text Available In this study we tested the existence of long memory in the the return series for major Central Eastern European and Balkans stock markets, using the following statistical methods: Hurst Exponent, GPH method, Andrews and Guggenberger method, Reisen method, Willinger, Taqqu and Teverovsky method and ARFIMA model. The results obtained are mixed. The Hurst Exponent showed the existence of long memory in all indices, except PX. After applying the GPH method, the results showed that BET, ATHEX, SOFIX and CROBEX have a predictable behavior. The ARFIMA model results support the existence of long memory for BUX, SAX and BELEX. The predictable behavior of index returns may suggest that the CEE and Balkans stock markets are not weak form efficient.

  7. Long-range properties and data validity for hydrogeological time series: the case of the Paglia river

    CERN Document Server

    Ausloos, Marcel; Lupi, Claudio

    2016-01-01

    This paper explores a large collection of about 377,000 observations, spanning more than 20 years with a frequency of 30 minutes, of the streamflow of the Paglia river, in central Italy. We analyze the long-term persistence properties of the series by computing the Hurst exponent, not only in its original form but also under an evolutionary point of view by analyzing the Hurst exponents over a rolling windows basis. The methodological tool adopted for the persistence is the detrended fluctuation analysis (DFA), which is classically known as suitable for our purpose. As an ancillary exploration, we implement a control on the data validity by assessing if the data exhibit the regularity stated by Benford's law. Results are interesting under different viewpoints. First, we show that the Paglia river streamflow exhibits periodicities which broadly suggest the existence of some common behaviour with El Nino and the North Atlantic Oscillations: this specifically points to a (not necessarily direct) effect of these ...

  8. Variety of stylolites morphologies and statistical characterization of the amount of heterogeneities in the rock

    CERN Document Server

    Brouste, Alexandre; Gratier, Jean-Pierre; Schmittbuhl, Jean

    2008-01-01

    The surface roughness of several stylolites in limestones was measured using high resolution laser profilometry. The 1D signals obtained were statistically analyzed to determine the scaling behavior and calculate a roughness exponent, also called Hurst exponent. Statistical methods based on the characterization of a single Hurst exponent imply strong assumptions on the mathematical characteristics of the signal: the derivative of the signal (or local increments) should be stationary and have finite variance. The analysis of the measured stylolites show that these properties are not always verified simultaneously. The stylolite profiles show persistence and jumps and several stylolites are not regular, with alternating regular and irregular portions. A new statistical method is proposed here, based on a non-stationary but Gaussian model, to estimate the roughness of the profiles and quantify the heterogeneity of stylolites. This statistical method is based on two parameters: the local roughness (H) which descr...

  9. R/S analysis of reaction time in Neuron Type Test for human activity in civil aviation

    Science.gov (United States)

    Zhang, Hong-Yan; Kang, Ming-Cui; Li, Jing-Qiang; Liu, Hai-Tao

    2017-03-01

    Human factors become the most serious problem leading to accidents of civil aviation, which stimulates the design and analysis of Neuron Type Test (NTT) system to explore the intrinsic properties and patterns behind the behaviors of professionals and students in civil aviation. In the experiment, normal practitioners' reaction time sequences, collected from NTT, exhibit log-normal distribution approximately. We apply the χ2 test to compute the goodness-of-fit by transforming the time sequence with Box-Cox transformation to cluster practitioners. The long-term correlation of different individual practitioner's time sequence is represented by the Hurst exponent via Rescaled Range Analysis, also named by Range/Standard deviation (R/S) Analysis. The different Hurst exponent suggests the existence of different collective behavior and different intrinsic patterns of human factors in civil aviation.

  10. Financial Crisis: A New Measure for Risk of Pension Fund Portfolios.

    Directory of Open Access Journals (Sweden)

    Marinella Cadoni

    Full Text Available It has been argued that pension funds should have limitations on their asset allocation, based on the risk profile of the different financial instruments available on the financial markets. This issue proves to be highly relevant at times of market crisis, when a regulation establishing limits to risk taking for pension funds could prevent defaults. In this paper we present a framework for evaluating the risk level of a single financial instrument or a portfolio. By assuming that the log asset returns can be described by a multifractional Brownian motion, we evaluate the risk using the time dependent Hurst parameter H(t which models volatility. To provide a measure of the risk, we model the Hurst parameter with a random variable with mixture of beta distribution. We prove the efficacy of the methodology by implementing it on different risk level financial instruments and portfolios.

  11. The role of magnetic islands in modifying long range temporal correlations of density fluctuations and local heat transport

    CERN Document Server

    van Milligen, B Ph; Garcia, L; Bruna, D Lopez; Carreras, B A; Xu, Y; Ochando, M; Hidalgo, C; Reynolds-Barredo, J M; Fraguas, A Lopez

    2016-01-01

    This work explores the relation between magnetic islands, long range temporal correlations and heat transport. A low order rational surface ($\\iota/2\\pi = 3/2$) was purposely scanned outward through an Electron Cyclotron Resonance Heated (ECRH) plasma in the TJ-II stellarator. Density turbulence and the poloidal flow velocity (or radial electric field) were characterized using a two channel Doppler Reflectometer. Simultaneously, the ECRH power was modulated to characterize heat transport, using measurements from a 12 channel Electron Cyclotron Emission diagnostic. A systematic variation of the poloidal velocity was found to be associated with the stationary $\\iota/2\\pi = 3/2$ magnetic island. Inside from the rational surface, the Hurst coefficient, quantifying the nature of long-range correlations, was found to be significantly enhanced. Simultaneously, heat transport was enhanced as well, establishing a clear link between density fluctuations and anomalous heat transport. The variation of the Hurst coefficie...

  12. Nonlinear analysis of RED - a comparative study

    Energy Technology Data Exchange (ETDEWEB)

    Jiang Kai; Wang Xiaofan E-mail: xfwang@sjtu.edu.cn; Xi Yugeng

    2004-09-01

    Random Early Detection (RED) is an active queue management (AQM) mechanism for routers on the Internet. In this paper, performance of RED and Adaptive RED are compared from the viewpoint of nonlinear dynamics. In particular, we reveal the relationship between the performance of the network and its nonlinear dynamical behavior. We measure the maximal Lyapunov exponent and Hurst parameter of the average queue length of RED and Adaptive RED, as well as the throughput and packet loss rate of the aggregate traffic on the bottleneck link. Our simulation scenarios include FTP flows and Web flows, one-way and two-way traffic. In most situations, Adaptive RED has smaller maximal Lyapunov exponents, lower Hurst parameters, higher throughput and lower packet loss rate than that of RED. This confirms that Adaptive RED has better performance than RED.

  13. R/S method for evaluation of pollutant time series in environmental quality assessment

    Institute of Scientific and Technical Information of China (English)

    Bu Quanmin; Bi Jun; Yuan Zengwei; Huang Lei

    2008-01-01

    The significance of the fluctuation and randomness of the time series of each pollutant in environmental quality assessment is described for the first time in this paper. A comparative study was made of three different computing methods: the same starting point method, the striding averaging method, and the stagger phase averaging method. All of them can be used to calculate the Hurst index, which quantifies fluctuation and randomness. This study used real water quality data from Shazhu monitoring station on Taihu Lake in Wuxi, Jiangsu Province. The results show that, of the three methods, the stagger phase averaging method is best for calculating the Hurst index of a pollutant time series from the perspective of statistical regularity.

  14. Degree distributions of the visibility graphs mapped from fractional Brownian motions and multifractal random walks

    Energy Technology Data Exchange (ETDEWEB)

    Ni Xiaohui [School of Business, East China University of Science and Technology, Shanghai 200237 (China)] [School of Science, East China University of Science and Technology, Shanghai 200237 (China)] [Research Center for Econophysics, East China University of Science and Technology, Shanghai 200237 (China); Jiang Zhiqiang [School of Business, East China University of Science and Technology, Shanghai 200237 (China)] [School of Science, East China University of Science and Technology, Shanghai 200237 (China)] [Research Center for Econophysics, East China University of Science and Technology, Shanghai 200237 (China)] [Chair of Entrepreneurial Risks, D-MTEC, ETH Zurich, Kreuplatz 5, CH-8032 Zurich (Switzerland); Zhou Weixing, E-mail: wxzhou@ecust.edu.c [School of Business, East China University of Science and Technology, Shanghai 200237 (China)] [School of Science, East China University of Science and Technology, Shanghai 200237 (China)] [Research Center for Econophysics, East China University of Science and Technology, Shanghai 200237 (China)] [Engineering Research Center of Process Systems Engineering (Ministry of Education), East China University of Science and Technology, Shanghai 200237 (China)] [Research Center on Fictitious Economics and Data Science, Chinese Academy of Sciences, Beijing 100080 (China)

    2009-10-12

    The dynamics of a complex system is usually recorded in the form of time series, which can be studied through its visibility graph from a complex network perspective. We investigate the visibility graphs extracted from fractional Brownian motions and multifractal random walks, and find that the degree distributions exhibit power-law behaviors, in which the power-law exponent alpha is a linear function of the Hurst index H of the time series. We also find that the degree distribution of the visibility graph is mainly determined by the temporal correlation of the original time series with minor influence from the possible multifractal nature. As an example, we study the visibility graphs constructed from three Chinese stock market indexes and unveil that the degree distributions have power-law tails, where the tail exponents of the visibility graphs and the Hurst indexes of the indexes are close to the alphaapproxH linear relationship.

  15. Analysis of Solar Neutrino Data from Super-Kamiokande I and II

    Directory of Open Access Journals (Sweden)

    Hans J. Haubold

    2014-03-01

    Full Text Available We are going back to the roots of the original solar neutrino problem: the analysis of data from solar neutrino experiments. The application of standard deviation analysis (SDA and diffusion entropy analysis (DEA to the Super-Kamiokande I and II data reveals that they represent a non-Gaussian signal. The Hurst exponent is different from the scaling exponent of the probability density function, and both the Hurst exponent and scaling exponent of the probability density function of the Super-Kamiokande data deviate considerably from the value of 0.5, which indicates that the statistics of the underlying phenomenon is anomalous. To develop a road to the possible interpretation of this finding, we utilize Mathai’s pathway model and consider fractional reaction and fractional diffusion as possible explanations of the non-Gaussian content of the Super-Kamiokande data.

  16. Using Digital Acoustic Recording Tags to Detect Marine Mammals on Navy Ranges and Study their Responses to Naval Sonar

    Science.gov (United States)

    2011-02-01

    during a long foraging dive. Recently, micro-machined ( MEMS ) gyroscopes have become available in small (អmm3) packages and with relatively low... gyroscopes . MEMS gyroscopes function by measuring the inertial forces on an oscillating frame. Oscillatory movement is an essential feature of any...the host animal (Hurst and Johnson, 2009). MEMS gyroscopes oscillate at 25-30kHz, and so coincide with the most sensitive hearing range of many

  17. Short time kernel asymptotics for Young SDE by means of Watanabe distribution theory

    CERN Document Server

    Inahama, Yuzuru

    2011-01-01

    In this paper we study short time asymptotics of a density function of the solution of a stochastic differential equation driven by fractional Brownian motion with Hurst parameter $H \\in (1/2, 1)$ when the coefficient vector fields satisfy an ellipticity condition at the starting point. We prove both on-diagonal and off-diagonal asymptotics under mild additional assumptions. Our main tool is Malliavin calculus, in particular, Watanabe's theory of generalized Wiener functionals.

  18. Self-affine Multiplicity Fluctuation of Slow Particles in 16O-AgBr Collisions at 3.7 A GeV

    Institute of Scientific and Technical Information of China (English)

    LI Jun-Sheng; ZHANG Dong-Hai; LI Hui-Ling; LIU Fu-Hu

    2009-01-01

    We study the slow particles in 16O-AgBr collisions at 3.7A GeV in nuclear emulsion with the method of two-dimensioned factorial moments using the Hurst exponent. Our investigation revea/s the power law behaviour, exhibited in self-affine anedysis, better than that in self-similar analysis. This work shows a clear evidence of self-affine target fragmentation.

  19. Performance of multifractal detrended fluctuation analysis on short time series

    CERN Document Server

    Lopez, Juan Luis

    2013-01-01

    The performance of the multifractal detrended analysis on short time series is evaluated for synthetic samples of several mono- and multifractal models. The reconstruction of the generalized Hurst exponents is used to determine the range of applicability of the method and the precision of its results as a function of the decreasing length of the series. As an application the series of the daily exchange rate between the U.S. dollar and the euro is studied.

  20. An Integrated Rare Earth Elements Supply Chain Strategy

    Science.gov (United States)

    2011-02-24

    FL: CRC Press, 2005) 1, 61, 59. 7 Gupta and Krishnamurthy, Extractive Metallurgy of Rare Earths, 21, 22, 32; Cindy A. Hurst, ―China‘s Ace in the...Supply Chain, Briefing for Congressional Committees, 27. 17 Ibid, 24. 18 Gupta and Krishnamurthy, Extractive Metallurgy of Rare Earths, 57. 19 Ibid...Oct 12, 2010): 3. 38 Gupta and Krishnamurthy, Extractive Metallurgy of Rare Earths, 94. 39 U.S. Government Accountability Office, Rare Earth

  1. Functional limit theorems for generalized variations of the fractional Brownian sheet

    DEFF Research Database (Denmark)

    Pakkanen, Mikko; Réveillac, Anthony

    and on the smallest component of the Hurst parameter vector of the fBs. The limiting process in the former result is another fBs, independent of the original fBs, whereas the limit given by the latter result is an Hermite sheet, which is driven by the same white noise as the original fBs. As an application, we derive...

  2. Functional limit theorems for generalized variations of the fractional Brownian sheet

    DEFF Research Database (Denmark)

    Pakkanen, Mikko; Réveillac, Anthony

    2016-01-01

    and on the smallest component of the Hurst parameter vector of the fBs. The limiting process in the former result is another fBs, independent of the original fBs, whereas the limit given by the latter result is an Hermite sheet, which is driven by the same white noise as the original fBs. As an application, we derive...

  3. Stability of Linear Stochastic Differential Equations with Respect to Fractional Brownian Motion

    Institute of Scientific and Technical Information of China (English)

    SHU Hui-sheng; CHEN Chun-li; WEI Guo-liang

    2009-01-01

    This paper is concerned with the stochastically stability for the m -dimensional linear stochastic differential equations with respect to fractional Brownian motion (FBM) with Hurst parameter H∈ (1/2, 1). On the basis of the pioneering work of Duncan and Hu, a Ito's formula is given.An improved derivative operator to Lyapunov functions is constructed, and the sufficient conditions for the stochastically stability of linear stochastic differential equations driven by FBM are established. These extend the stochastic Lyapunov stability theories.

  4. R/S Analysis of China Securities Markets

    Institute of Scientific and Technical Information of China (English)

    华苏; 林勇

    2003-01-01

    This paper presents the law of changes of indices and stocks in the Shanghai and Shenzhen Stock Exchanges by using rescaled range analysis in nonlinear time series analysis. The Hurst exponents of the stock indices and of all stocks listed in the Shanghai and Shenzhen Stock Exchanges are estimated. The results show that the changes of indices and stocks in the last period have positive impact in the next period in the short run, but this impact disappears for long time.

  5. Integrability Estimates for Gaussian Rough Differential Equations

    CERN Document Server

    Cass, Thomas; Lyons, Terry

    2011-01-01

    We derive explicit tail-estimates for the Jacobian of the solution flow of stochastic differential equations driven by Gaussian rough paths. In particular, we deduce that the Jacobian has finite moments of all order for a wide class of Gaussian process including fractional Brownian motion with Hurst parameter H>1/4. We remark on the relevance of such estimates to a number of significant open problems.

  6. President Obama visiidi eduka kommunikatsiooni tagas põhjalik ettevalmistus / Mariann Sudakov, Tiina Ansip, Ainar Ruussaar ...[jt.] ; intervjueerinud Kertu Kärk

    Index Scriptorium Estoniae

    2014-01-01

    Eestit 3. septembril 2014 külastanud USA president Barack Obama visiidi kommunikatsioonist ja planeerimisest räägivad välisministeeriumi pressiosakonna nimel pressispetsialist Mariann Sudakov, valitsuse kommunikatsioonibüroo esindaja, valitsuse meedianõunik valitsuskommunikatsiooni direktori ülesannetes Tiina Ansip, ERR-i juhatuse liige ja ajakirjanik Ainar Ruussaar, Vabariigi Presidendi avalike suhete nõunik Toomas Sildam ning USA saatkonna pressi- ja kultuuriatašee Bradley Hurst

  7. Implicit Euler approximation of stochastic evolution equations with fractional Brownian motion

    Science.gov (United States)

    Kamrani, Minoo; Jamshidi, Nahid

    2017-03-01

    This work was intended as an attempt to motivate the approximation of quasi linear evolution equations driven by infinite-dimensional fractional Brownian motion with Hurst parameter H >1/2 . The spatial approximation method is based on Galerkin and the temporal approximation is based on implicit Euler scheme. An error bound and the convergence of the numerical method are given. The numerical results show usefulness and accuracy of the method.

  8. Anomalous scaling and super-roughness in the growth of CdTe polycrystalline films

    OpenAIRE

    Mata, Angélica S.; Ferreira, Jr,Augusto; Ribeiro, Igor R. B.; Ferreira, Sukarno O.

    2011-01-01

    CdTe films grown on glass substrates covered by fluorine doped tin oxide by Hot Wall Epitaxy (HWE) were studied through the interface dynamical scaling theory. Direct measures of the dynamical exponent revealed an intrinsically anomalous scaling characterized by a global roughness exponent $\\alpha$ distinct from the local one (the Hurst exponent $H$), previously reported [Ferreira \\textit{et al}., Appl. Phys. Lett. \\textbf{88}, 244103 (2006)]. A variety of scaling behaviors was obtained with ...

  9. Transportation inequalities for stochastic differential equations driven by a fractional Brownian motion

    CERN Document Server

    Saussereau, Bruno

    2012-01-01

    We establish Talagrand's $T_1$ and $T_2$ inequalities for the law of the solution of a stochastic differential equation driven by a fractional Brownian motion with Hurst parameter $H>1/2$. We use the $L^2$ metric and the uniform metric on the path space of continuous functions on $[0,T]$. These results are applied to study small-time and large-time asymptotics for the solutions of such equations by means of a Hoeffding-type inequality.

  10. Asian Option Pricing with Monotonous Transaction Costs under Fractional Brownian Motion

    Directory of Open Access Journals (Sweden)

    Di Pan

    2013-01-01

    Full Text Available Geometric-average Asian option pricing model with monotonous transaction cost rate under fractional Brownian motion was established. The method of partial differential equations was used to solve this model and the analytical expressions of the Asian option value were obtained. The numerical experiments show that Hurst exponent of the fractional Brownian motion and transaction cost rate have a significant impact on the option value.

  11. The Effects of Local Supralethal Irradiation on Renal Function

    Science.gov (United States)

    1974-05-01

    Natriuresis produced by vasopressin or hemorrhage during water diuresis in the dog. Am. J. Physiol. 219:658-665, 1970. 15. Hurst, R. O. The...Protocol II 4 III. Results 7 Protocol I 9 Water diuresis 9 Antidiuresis 13 Protocol II 19 IV. Discussion 22 References 27 LIST OF FIGURES...water diuresis 11 Figure 3. Solute excretion in water diuresis and antidiuresis 12 Figure 4. Relations between the differences of the

  12. When fractional Brownian motion does not behave as a continuous function with bounded variation?

    CERN Document Server

    Azmoodeh, Ehsan; Valkeila, Esko

    2010-01-01

    If we compose a smooth function g with fractional Brownian motion B with Hurst index H > 1/2, then the resulting change of variables formula [or It/^o- formula] has the same form as if fractional Brownian motion would be a continuous function with bounded variation. In this note we prove a new integral representation formula for the running maximum of a continuous function with bounded variation. Moreover we show that the analogue to fractional Brownian motion fails.

  13. Fractal analysis of the hierarchic structure of fossil coal surface

    Energy Technology Data Exchange (ETDEWEB)

    Alekseev, A.D.; Vasilenko, T.A.; Kirillov, A.K. [National Academy of Sciences, Donetsk (Ukraine)

    2008-05-15

    The fractal analysis is described as method of studying images of surface of fossil coal, one of the natural sorbent, with the aim of determining its structural surface heterogeneity. The deformation effect as a reduction in the dimensions of heterogeneity boundaries is considered. It is shown that the theory of nonequilibrium dynamic systems permits to assess a formation level of heterogeneities involved into a sorbent composition by means of the Hurst factor.

  14. The Local Fractal Properties of the Financial Time Series on the Polish Stock Exchange Market

    CERN Document Server

    Grech, D

    2007-01-01

    We investigate the local fractal properties of the financial time series based on the evolution of the Warsaw Stock Exchange Index (WIG) connected with the largest developing financial market in Europe. Calculating the local Hurst exponent for the WIG time series we find an interesting dependence between the behavior of the local fractal properties of the WIG time series and the crashes appearance on the financial market.

  15. An innovative Near-Peer Mentoring Model for Undergraduate and Secondary Students: STEM Focus

    Science.gov (United States)

    2014-03-14

    WRAIR GEMS program as men- tors, trainers , and supervisors. The neuropharmacologist, educational psychologist, chemist, and physiologist/medical...they appreciated the support they received from one another, the specific tips that were offered, and the way they learned from the examples of others...Technology, 18, 487– 500 . Feldon, D. F., Peugh, J., Timmerman, B. E., Maher, M. A., Hurst, M., Strickland, D., & Stiegelmeyer, C. (2011). Graduate students

  16. Model-free stochastic processes studied with q-wavelet-based informational tools

    Energy Technology Data Exchange (ETDEWEB)

    Perez, D.G. [Instituto de Fisica, Pontificia Universidad Catolica de Valparaiso (PUCV), 23-40025 Valparaiso (Chile)]. E-mail: dario.perez@ucv.cl; Zunino, L. [Centro de Investigaciones Opticas, C.C. 124 Correo Central, 1900 La Plata (Argentina) and Departamento de Ciencias Basicas, Facultad de Ingenieria, Universidad Nacional de La Plata (UNLP), 1900 La Plata (Argentina) and Departamento de Fisica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900 La Plata (Argentina)]. E-mail: lucianoz@ciop.unlp.edu.ar; Martin, M.T. [Instituto de Fisica (IFLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and Argentina' s National Council (CONICET), C.C. 727, 1900 La Plata (Argentina)]. E-mail: mtmartin@venus.unlp.edu.ar; Garavaglia, M. [Centro de Investigaciones Opticas, C.C. 124 Correo Central, 1900 La Plata (Argentina) and Departamento de Fisica, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900 La Plata (Argentina)]. E-mail: garavagliam@ciop.unlp.edu.ar; Plastino, A. [Instituto de Fisica (IFLP), Facultad de Ciencias Exactas, Universidad Nacional de La Plata and Argentina' s National Council (CONICET), C.C. 727, 1900 La Plata (Argentina)]. E-mail: plastino@venus.unlp.edu.ar; Rosso, O.A. [Chaos and Biology Group, Instituto de Calculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon II, Ciudad Universitaria, 1428 Ciudad de Buenos Aires (Argentina)]. E-mail: oarosso@fibertel.com.ar

    2007-04-30

    We undertake a model-free investigation of stochastic processes employing q-wavelet based quantifiers, that constitute a generalization of their Shannon counterparts. It is shown that (i) interesting physical information becomes accessible in such a way (ii) for special q values the quantifiers are more sensitive than the Shannon ones and (iii) there exist an implicit relationship between the Hurst parameter H and q within this wavelet framework.

  17. Nuclear Effect in Higher-Dimensional Factorial Moment Analysis of the $^{16}O$-, $^{32}S$- and $^{197}Au$-$Em$ Interaction Data at 200, 60 and 11 AGeV/c

    CERN Document Server

    Adamovich, M I; Alexander, Yu; Amirikas, R; Andreeva, N P; Avetyan, F A; Badyal, S K; Bakich, A M; Basova, E S; Bhalla, K B; Bhasin, A; Bhatia, V S; Bogdanov, V G; Bradnova, V; Bubnov, V I; Cai, X; Chasnikov, I Yu; Chen, L; Chernova, L P; Chernyavsky, M M; Dhamija, S; El-Chenawi, K F; Felea, D; Feng, S Q; Gaitinov, A S; Ganssauge, E R; Garpman, S I A; Gerassimov, S G; Gheata, A; Gheata, M; Grote, J; Gulamov, K G; Sen-Gupta, S K; Gupta, V K; Haiduc, M; Hasegan, D; Hu, Z R; Jakobsson, B; Just, L; Kanygina, E K; Karabova, M; Kharlamov, S P; Kim, Y C; Kovalenko, A D; Krasnov, S A; Kumar, V; Larionova, V G; Lee, G C; Lepekhin, F G; Levitskya, O V; Li, Y X; Liang, L; Liu, L S; Liu, Z G; Lokanathan, S; Lord, J J; Lukicheva, N S; Lu, Y; Luo, S B; Mangotra, L K; Marutyan, N A; Mitra, I S; Nasyrov, S Z; Navotny, V S; Nilsson, P O; Nystrand, J; Orlova, G I; Otterlund, I; Pavukova, A; Peak, L S; Peresadko, N G; Petrov, N V; Plyushchev, V A; Qian, W Y; Qin, Y M; Raniwala, R; Rao, N K; Rhee, J T; Röper, M D; Rusakova, V V; Saidkhanov, N S; Salmanova, N A; Sarkisova, L G; Sarkisian, V R; Seitimbetov, A M; Sethi, R; Shakhova, T I; Seliverstov, D M; Singh, B; Simonov, B B; Skelding, D; Söderström, K; Skorobogatova, V I; Stenlund, E; Svechnikova, L N; Svensson, T; Tawfik, A M; Tothova, M; Tretyakova, M I; Trofimova, T P; Tuleeva, U I; Vashisht, V; Vokal, S; Vrláková, J; Wang, H Q; Wang, S H; Wang, X R; Weng, Z Q; Wilkes, R J; Yang, C B; Yin, Z B; Yu, L Z; Zhang, D H; Zheng, P Y; Zhokhova, S I; Zhou, D C

    1997-01-01

    The anomalous behavior of 2-dimensional factorial moment in nucleus-nucleus collisions is studied in some detail using both mini-bias and central collision data of ^{16}O-, ^{32}S- and ^{197}Au-Em interactions from EMU01 experiment. The correct value for the effective Hurst exponent in the analysis of higher-dimensional factorial moment is found to be greater than unity, showing clearly the existence of superposition effect in nucleus-nucleus collisions.

  18. CERN 50th Anniversary : CERN's 50th anniversary celebrations drew to a close with a ceremony at Geneva University's Institut de Physique.

    CERN Multimedia

    Maximilien Brice

    2004-01-01

    For it was here, on the banks of the River Arve, that CERN's first staff members, from the PS Magnets Group, came to work in October 1953. A commemorative plaque was inaugurated by Robert Aymar, CERN's Director-General, Charles Beer, State Councillor for the Canton of Geneva responsible for the Department of Public Education, and André Hurst, Rector of the University (Picture 01)

  19. Coarse-Grained Multifractality Analysis Based on Structure Function Measurements to Discriminate Healthy from Distressed Foetuses

    Directory of Open Access Journals (Sweden)

    Souad Oudjemia

    2013-01-01

    Full Text Available This paper proposes a combined coarse-grained multifractal method to discriminate between distressed and normal foetuses. The coarse-graining operation was performed by means of a coarse-grained procedure and the multifractal operation was based on a structure function. The proposed method was evaluated by one hundred recordings including eighty normal foetuses and twenty distressed foetuses. We found that it was possible to discriminate between distressed and normal foetuses using the Hurst exponent, singularity, and Holder spectra.

  20. Apprenticeship Learning: Learning to Schedule from Human Experts

    Science.gov (United States)

    2016-06-09

    to improve veterans? access to care: A system- atic review of the literature. Journal of General Internal Medicine 26(2):689–696. Konidaris, G., and...J. C. 2011. What are the conse- quences of waiting for health care in the veteran population? Journal of General Internal Medicine 26(2):676–682...Estimation of maximum-likelihood discrete-choice models of the runway configuration selection process. In Proc. ACC , 2160–2167. Sammut, C.; Hurst, S

  1. Estimation of the global regularity of a multifractional Brownian motion

    DEFF Research Database (Denmark)

    Lebovits, Joachim; Podolskij, Mark

    This paper presents a new estimator of the global regularity index of a multifractional Brownian motion. Our estimation method is based upon a ratio statistic, which compares the realized global quadratic variation of a multifractional Brownian motion at two different frequencies. We show...... that a logarithmic transformation of this statistic converges in probability to the minimum of the Hurst functional parameter, which is, under weak assumptions, identical to the global regularity index of the path....

  2. Experimental investigation of quasiperiodic-chaotic-quasiperiodic-chaotic transition in a direct current magnetron sputtering plasma

    Energy Technology Data Exchange (ETDEWEB)

    Sabavath, Gopi Kishan; Banerjee, I.; Mahapatra, S. K., E-mail: skmahapatra@bitmesra.ac.in [Plasma Laboratory, Department of Physics, Birla Institute of Technology-Mesra, Ranchi 835215 (India); Shaw, Pankaj Kumar; Sekar Iyengar, A. N. [Plasma Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700064 (India)

    2015-08-15

    Floating potential fluctuations from a direct current magnetron sputtering plasma have been analysed using time series analysis techniques like phase space plots, power spectra, frequency bifurcation plot, etc. The system exhibits quasiperiodic-chaotic-quasiperiodic-chaotic transitions as the discharge voltage was increased. The transitions of the fluctuations, quantified using the largest Lyapunov exponent, have been corroborated by Hurst exponent and the Shannon entropy. The Shannon entropy is high for quasiperiodic and low for chaotic oscillations.

  3. An Averaging Principle for Stochastic Differential Delay Equations with Fractional Brownian Motion

    Directory of Open Access Journals (Sweden)

    Yong Xu

    2014-01-01

    Full Text Available An averaging principle for a class of stochastic differential delay equations (SDDEs driven by fractional Brownian motion (fBm with Hurst parameter in (1/2,1 is considered, where stochastic integration is convolved as the path integrals. The solutions to the original SDDEs can be approximated by solutions to the corresponding averaged SDDEs in the sense of both convergence in mean square and in probability, respectively. Two examples are carried out to illustrate the proposed averaging principle.

  4. Optical diagnosis of colon and cervical cancer by support vector machine

    Science.gov (United States)

    Mukhopadhyay, Sabyasachi; Kurmi, Indrajit; Dey, Rajib; Das, Nandan K.; Pradhan, Sanjay; Pradhan, Asima; Ghosh, Nirmalya; Panigrahi, Prasanta K.; Mohanty, Samarendra

    2016-05-01

    A probabilistic robust diagnostic algorithm is very much essential for successful cancer diagnosis by optical spectroscopy. We report here support vector machine (SVM) classification to better discriminate the colon and cervical cancer tissues from normal tissues based on elastic scattering spectroscopy. The efficacy of SVM based classification with different kernel has been tested on multifractal parameters like Hurst exponent, singularity spectrum width in order to classify the cancer tissues.

  5. Control effects of Morlet wavelet term on Weierstrass-Mandelbrot function model

    Science.gov (United States)

    Zhang, L.; Liu, S. T.; Yu, C.

    2014-08-01

    In this paper, we have investigated the control problem of the Weierstrass-Mandelbrot function model with Morlet wavelet term. Based on the corollary for its convergence, we have formulated several theorems about the monotonous effects of Morlet wavelet term on scope of the series. In addition, effects of Morlet wavelet term on two important statistical characteristics: multifractality and Hurst exponent have been calculated. We have used simulation examples to illustrate the control effects.

  6. Group-wise herding behavior in financial markets: an agent-based modeling approach.

    Science.gov (United States)

    Kim, Minsung; Kim, Minki

    2014-01-01

    In this paper, we shed light on the dynamic characteristics of rational group behaviors and the relationship between monetary policy and economic units in the financial market by using an agent-based model (ABM), the Hurst exponent, and the Shannon entropy. First, an agent-based model is used to analyze the characteristics of the group behaviors at different levels of irrationality. Second, the Hurst exponent is applied to analyze the characteristics of the trend-following irrationality group. Third, the Shannon entropy is used to analyze the randomness and unpredictability of group behavior. We show that in a system that focuses on macro-monetary policy, steep fluctuations occur, meaning that the medium-level irrationality group has the highest Hurst exponent and Shannon entropy among all of the groups. However, in a system that focuses on micro-monetary policy, all group behaviors follow a stable trend, and the medium irrationality group thus remains stable, too. Likewise, in a system that focuses on both micro- and macro-monetary policies, all groups tend to be stable. Consequently, we find that group behavior varies across economic units at each irrationality level for micro- and macro-monetary policy in the financial market. Together, these findings offer key insights into monetary policy.

  7. Vibration time series analysis of bubbling and turbulent fluidization

    Institute of Scientific and Technical Information of China (English)

    Hedayat Azizpour; Rahmat Sotudeh-Gharebagh; Reza Zarghami; Navid Mostoufi

    2012-01-01

    A non-intrusive vibration monitoring technique was used to study the hydrodynamics of a gas-solid fluidized bed.Experiments were carried out in a 15 cm diameter fluidized bed using 226,470 and 700 μm sand particles at various gas velocities,covering both bubbling and turbulent regimes.Auto correlation function,mutual information function,Hurst exponent analysis and power spectral density function were used to analyze the fluidized bed hydrodynamics near the transition point from bubbling to turbulent fluidization regimes.The first pass of the autocorrelation function from one half and the time delay at which it becomes zero,and also the first minimum of the mutual information,occur at a higher time delay in comparison to stochastic systems,and the values of time delays were maximum at the bubbling to turbulent transition gas velocity.The maximum value of Hurst exponent of macro structure occurred at the onset of regime transition from bubbling to turbulent.Further increase in gas velocity after that regime transition velocity causes a decrease in the Hurst exponent of macro structure because of breakage of large bubbles to small ones.The results showed these methods are capable of detecting the regime transition from bubbling to turbulent fluidization conditions using vibration signals.

  8. Sampling rate dependence of correlation at long time lags in BOLD fMRI measurements on humans and gel phantoms.

    Science.gov (United States)

    Mikkelsen, Kaare B; Lund, Torben E

    2013-01-01

    The aim of this study is to investigate the effects of sampling rate on Hurst exponents derived from Blood Oxygenation Level Dependent functional Magnetic Resonance Imaging (BOLD fMRI) resting state time series. fMRI measurements were performed on 2 human subjects and a selection of gel phantoms. From these, Hurst exponents were calculated. It was found that low sampling rates induced non-trivial exponents at sharp material transitions, and that Hurst exponents of human measurements had a strong TR-dependence. The findings are compared to theoretical considerations regarding the fractional Gaussian noise model and resampling, and it is found that the implications are problematic. This result should have a direct influence on the way future studies of low-frequency variation in BOLD fMRI data are conducted, especially if the fractional Gaussian noise model is considered. We recommend either using a different model (examples of such are referenced in the conclusion), or standardizing experimental procedures along an optimal sampling rate.

  9. Self-affine subglacial roughness: consequences for radar scattering and basal water discrimination in northern Greenland

    Science.gov (United States)

    Jordan, Thomas M.; Cooper, Michael A.; Schroeder, Dustin M.; Williams, Christopher N.; Paden, John D.; Siegert, Martin J.; Bamber, Jonathan L.

    2017-05-01

    Subglacial roughness can be determined at a variety of length scales from radio-echo sounding (RES) data either via statistical analysis of topography or inferred from basal radar scattering. Past studies have demonstrated that subglacial terrain exhibits self-affine (power law) roughness scaling behaviour, but existing radar scattering models do not take this into account. Here, using RES data from northern Greenland, we introduce a self-affine statistical framework that enables a consistent integration of topographic-scale roughness with the electromagnetic theory of radar scattering. We demonstrate that the degree of radar scattering, quantified using the waveform abruptness (pulse peakiness), is topographically controlled by the Hurst (roughness power law) exponent. Notably, specular bed reflections are associated with a lower Hurst exponent, with diffuse scattering associated with a higher Hurst exponent. Abrupt waveforms (specular reflections) have previously been used as a RES diagnostic for basal water, and to test this assumption we compare our radar scattering map with a recent prediction for the basal thermal state. We demonstrate that the majority of thawed regions (above pressure melting point) exhibit a diffuse scattering signature, which is in contradiction to the prior approach. Self-affine statistics provide a generalised model for subglacial terrain and can improve our understanding of the relationship between basal properties and ice-sheet dynamics.

  10. Prediction analysis of long-term memory effect for calamity gray series

    Institute of Scientific and Technical Information of China (English)

    CHEN; Zhaonan(CHEN; Chaonan); LI; Zongyang(LEE; Tzongye

    2004-01-01

    It is adequate to use the gray theory for modeling and forecasting short-term calamity series. The forecast of calamity gray series is equivalent to predicting an extraordinary event in nature. In order to look for the regularity, the calamity date series, created from the threshold for a fixed time-interval series, are studied. In this paper, the Hurst exponent is applied to defining the long-term memory effect of the simulated calamity series, and is tested for the feasibility of using it as pre-requisite information before the gray modeling and forecasting. Based on the fractional Brownian motion (fBm) model, the time series with a definite length or quantity of data are derived assuming that various kinds of memory effect exist. Different threshold values are defined to yield or to analogize the calamity date series that are required in the prediction of the gray calamity events. After case study, both of the simulated and real seismic data show that the Hurst exponents are greater than 0.5 and, therefore, indicate that the long-term memory effect exists. The correlation between the Hurst exponent and the gray modeling parameter, a, provides criteria for the classification of the forecast.

  11. Characterizing Detrended Fluctuation Analysis of multifractional Brownian motion

    Science.gov (United States)

    Setty, V. A.; Sharma, A. S.

    2015-02-01

    The Hurst exponent (H) is widely used to quantify long range dependence in time series data and is estimated using several well known techniques. Recognizing its ability to remove trends the Detrended Fluctuation Analysis (DFA) is used extensively to estimate a Hurst exponent in non-stationary data. Multifractional Brownian motion (mBm) broadly encompasses a set of models of non-stationary data exhibiting time varying Hurst exponents, H(t) as against a constant H. Recently, there has been a growing interest in time dependence of H(t) and sliding window techniques have been used to estimate a local time average of the exponent. This brought to fore the ability of DFA to estimate scaling exponents in systems with time varying H(t) , such as mBm. This paper characterizes the performance of DFA on mBm data with linearly varying H(t) and further test the robustness of estimated time average with respect to data and technique related parameters. Our results serve as a bench-mark for using DFA as a sliding window estimator to obtain H(t) from time series data.

  12. Stochastic heterogeneity mapping around a Mediterranean salt lens

    Directory of Open Access Journals (Sweden)

    G. G. Buffett

    2010-01-01

    Full Text Available We present the first application of stochastic heterogeneity mapping based on the band-limited von Kármán function to a seismic reflection stack of a Mediterranean water eddy (meddy, a large salt lens of Mediterranean water. This process extracts two stochastic parameters directly from the reflectivity field of the seismic data: the Hurst number, which ranges from 0 to 1, and the correlation length (scale length. Lower Hurst numbers represent a richer range of scale lengths and correspond to a broader range of reflection events. The Hurst number estimate for the top of the meddy (0.39 compares well with recent theoretical work, which required values between 0.25 and 0.5 to model internal wave surfaces in open ocean conditions based on simulating a Garrett-Munk spectrum (GM76 slope of −2. Varying stochastic parameters, which correspond to different spectral slopes in the Garrett-Munk spectrum (horizontal wavenumber spectrum, can therefore provide an estimate of different internal wave scales from seismic data alone.

  13. How fast do stock prices adjust to market efficiency? Evidence from a detrended fluctuation analysis

    Science.gov (United States)

    Reboredo, Juan C.; Rivera-Castro, Miguel A.; Miranda, José G. V.; García-Rubio, Raquel

    2013-04-01

    In this paper we analyse price fluctuations with the aim of measuring how long the market takes to adjust prices to weak-form efficiency, i.e., how long it takes for prices to adjust to a fractional Brownian motion with a Hurst exponent of 0.5. The Hurst exponent is estimated for different time horizons using detrended fluctuation analysis-a method suitable for non-stationary series with trends-in order to identify at which time scale the Hurst exponent is consistent with the efficient market hypothesis. Using high-frequency share price, exchange rate and stock data, we show how price dynamics exhibited important deviations from efficiency for time periods of up to 15 min; thereafter, price dynamics was consistent with a geometric Brownian motion. The intraday behaviour of the series also indicated that price dynamics at trade opening and close was hardly consistent with efficiency, which would enable investors to exploit price deviations from fundamental values. This result is consistent with intraday volume, volatility and transaction time duration patterns.

  14. Sampling variability of computer-aided fractal-corrected measures of liver fibrosis in needle biopsy specimens

    Institute of Scientific and Technical Information of China (English)

    Fabio Grizzi; Carlo Russo; Barbara Franceschini; Mariagrazia Di Rocco; Valter Torri; Emanuela Morenghi; Luigi Rainiero Fassati; Nicola Dioguardi

    2006-01-01

    AIM: To assess the sampling variability of computeraided, fractal-corrected measures of fibrosis in liver biopsies.METHODS: Samples were derived from six to eight different parts of livers removed from 12 patients with clinically and histologically proven cirrhosis undergoing orthotopic liver transplantation. Sirius red-stained sections with a thickness of 2 μm were digitized using a computer-aided image analysis system that automatically measures the surface of fibrosis, as well as its outline perimeter, fractal surface and outline dimensions,wrinkledness, and Hurst coefficient.RESULTS: We found a high degree of inter-sample variability in the measurements of the surface [coefficient of variation (CV) = 43% ± 13%] and wrinkledness (CV = 28% ± 9%) of fibrosis, but the inter-sample variability of Hurst's exponent was low (CV = 14% ± 2%).CONCLUSION: This study suggests that Hurst's exponent might be used in clinical practice as the best histological estimate of fibrosis in the whole organ,and evidences the fact that biopsy sections, which are fundamental for the qualitative diagnosis of chronic hepatitis, play a key role in the quantitative estimate of architectural changes in liver tissue.

  15. A Study of Wavelet Analysis and Data Extraction from Second-Order Self-Similar Time Series

    Directory of Open Access Journals (Sweden)

    Leopoldo Estrada Vargas

    2013-01-01

    Full Text Available Statistical analysis and synthesis of self-similar discrete time signals are presented. The analysis equation is formally defined through a special family of basis functions of which the simplest case matches the Haar wavelet. The original discrete time series is synthesized without loss by a linear combination of the basis functions after some scaling, displacement, and phase shift. The decomposition is then used to synthesize a new second-order self-similar signal with a different Hurst index than the original. The components are also used to describe the behavior of the estimated mean and variance of self-similar discrete time series. It is shown that the sample mean, although it is unbiased, provides less information about the process mean as its Hurst index is higher. It is also demonstrated that the classical variance estimator is biased and that the widely accepted aggregated variance-based estimator of the Hurst index results biased not due to its nature (which is being unbiased and has minimal variance but to flaws in its implementation. Using the proposed decomposition, the correct estimation of the Variance Plot is described, as well as its close association with the popular Logscale Diagram.

  16. Métodos de analise dos danos da lagarta da espiga¹, em médias de gerações envolvendo IAC Maya e Zapalote Chico Method for analysis of damage of the corn earworm heliothis zea in generation means from IAC Maya and Zapalote Chico

    Directory of Open Access Journals (Sweden)

    Jorge Alberto Marques Rezende

    1982-01-01

    Full Text Available O milho Zapalote Chico 2451 (ZC 2451, referido na literatura como a melhor fonte de resistência à lagarta da espiga, Heliothis zea (Boddie, 1850, e o IAC Maya XII foram observados em condições de campo, juntamente com as gerações F1, e F2 resultantes do cruzamento de ambos, bem como os respectivos retrocruzamentos da população F1, para cada um dos pais, a fim de estudar métodos de análises de dados obtidos através da escala de dano revista por WIDSTROM e, conseqüentemente, fornecer subsídios para trabalhos de estudo da herança da resistência envolvendo esse cruzamento. Para analisar os dados, dividiram-se as notas de dano em quatro classes distintas agrupadas duas a duas, zero mais 1 e > 2, e zero e > 1, e aplicou-se o método do quiquadrado (c2 para verificar qual divisão melhor se ajustava. Os resultados revelaram que o grupo das classes zero mais 1 e > 2 apresentou melhor uniformidade dos dados entre as repetições dentro de cada tratamento. A análise da variância para cada classe de dano, separadamente, apresentou valores de F altamente significativos para as classes zero e zero mais 1, enquanto para as classes > 1 e > 2, os mesmos não permitiram diferenciar os tratamentos. Entre as classes zero e zero mais 1, esta última revelou maior significância e melhor precisão dos dados. O milho ZC 2451, quando comparado com a variedade IAC Maya XII, exibiu boa resistência à lagarta da espiga nas condições de Campinas (SP, resistência essa relacionada com fatores de não preferência e/ou antibiose, devido ã maior porcentagem de espigas não danificadas do ZC 2451.The line Zapalote Chico 2451 (ZC 2451 resistant to the corn earworm, Heliothis zea, the commercial synthetic Brazilian variety IAC Maya XII, the F1 and F2 obtained with their cross, and the two back crosses between the F1 and both parents, were planted in the field in a randomized block with 10 replications. The earworm damage done to the ears was graded

  17. An experimental and theoretical investigation on the optical and photocatalytic properties of ZnS nanoparticles

    Science.gov (United States)

    La Porta, F. A.; Nogueira, A. E.; Gracia, Lourdes; Pereira, W. S.; Botelho, G.; Mulinari, T. A.; Andrés, Juan; Longo, E.

    2017-04-01

    From the viewpoints of materials chemistry and physical chemistry, crystal structure directly determines the electronic structure and furthermore their optical and photocatalytic properties. Zinc sulfide (ZnS) nanoparticles (NPs) with tunable photoluminescence (PL) emission and high photocatalytic activity have been obtained by means of a microwave-assisted solvothermal (MAS) method using different precursors (i.e., zinc nitrate (ZN), zinc chloride (ZC), or zinc acetate (ZA)). The morphologies, optical properties, and electronic structures of the as-synthesized ZnS NPs were characterized by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), Brunauer-Emmett-Teller (BET) isotherms for N2 adsorption/desorption processes, diffuse reflectance spectroscopy (DRS), PL measurements and theoretical calculations. Density functional theory calculations were used to determine the geometries and electronic properties of bulk wurtzite (WZ) ZnS NPs and their (0001), (101 ̅0), (112 ̅0), (101 ̅1), and (101 ̅2) surfaces. The dependence of the PL emission behavior of ZnS NPs on the precursor was elucidated by examining the energy band structure and density of states. The method for degradation of Rhodamine B (RhB) was used as a probe reaction to investigate the photocatalytic activity of the as-Synthesised ZnS NPs under UV light irradiation. The PL behavior as well as photocatalytic activities of ZnS NPs were attributed to specific features of the structural and electronic structures. Increased photocatalytic degradation was observed for samples synthesized using different precursors in the following order: ZA<ZCZC and ZA. Furthermore, the possible photodegradation mechanism of the as-prepared ZnS NPs were also briefly discussed.

  18. A unified model for the maximum mass scales of molecular clouds, stellar clusters and high-redshift clumps

    Science.gov (United States)

    Reina-Campos, Marta; Kruijssen, J. M. Diederik

    2017-08-01

    We present a simple, self-consistent model to predict the maximum masses of giant molecular clouds (GMCs), stellar clusters and high-redshift clumps as a function of the galactic environment. Recent works have proposed that these maximum masses are set by shearing motions and centrifugal forces, but we show that this idea is inconsistent with the low masses observed across an important range of local-Universe environments, such as low-surface density galaxies and galaxy outskirts. Instead, we propose that feedback from young stars can disrupt clouds before the global collapse of the shear-limited area is completed. We develop a shear-feedback hybrid model that depends on three observable quantities: the gas surface density, the epicylic frequency and the Toomre parameter. The model is tested in four galactic environments: the Milky Way, the Local Group galaxy M31, the spiral galaxy M83 and the high-redshift galaxy zC406690. We demonstrate that our model simultaneously reproduces the observed maximum masses of GMCs, clumps and clusters in each of these environments. We find that clouds and clusters in M31 and in the Milky Way are feedback-limited beyond radii of 8.4 and 4 kpc, respectively, whereas the masses in M83 and zC406690 are shear-limited at all radii. In zC406690, the maximum cluster masses decrease further due to their inspiral by dynamical friction. These results illustrate that the maximum masses change from being shear-limited to being feedback-limited as galaxies become less gas rich and evolve towards low shear. This explains why high-redshift clumps are more massive than GMCs in the local Universe.

  19. The complete genome sequence of 'Candidatus Liberibacter solanacearum', the bacterium associated with potato zebra chip disease.

    Directory of Open Access Journals (Sweden)

    Hong Lin

    Full Text Available Zebra Chip (ZC is an emerging plant disease that causes aboveground decline of potato shoots and generally results in unusable tubers. This disease has led to multi-million dollar losses for growers in the central and western United States over the past decade and impacts the livelihood of potato farmers in Mexico and New Zealand. ZC is associated with 'Candidatus Liberibacter solanacearum', a fastidious alpha-proteobacterium that is transmitted by a phloem-feeding psyllid vector, Bactericera cockerelli Sulc. Research on this disease has been hampered by a lack of robust culture methods and paucity of genome sequence information for 'Ca. L. solanacearum'. Here we present the sequence of the 1.26 Mbp metagenome of 'Ca. L. solanacearum', based on DNA isolated from potato psyllids. The coding inventory of the 'Ca. L. solanacearum' genome was analyzed and compared to related Rhizobiaceae to better understand 'Ca. L. solanacearum' physiology and identify potential targets to develop improved treatment strategies. This analysis revealed a number of unique transporters and pathways, all potentially contributing to ZC pathogenesis. Some of these factors may have been acquired through horizontal gene transfer. Taxonomically, 'Ca. L. solanacearum' is related to 'Ca. L. asiaticus', a suspected causative agent of citrus huanglongbing, yet many genome rearrangements and several gene gains/losses are evident when comparing these two Liberibacter. species. Relative to 'Ca. L. asiaticus', 'Ca. L. solanacearum' probably has reduced capacity for nucleic acid modification, increased amino acid and vitamin biosynthesis functionalities, and gained a high-affinity iron transport system characteristic of several pathogenic microbes.

  20. Preparation of thermo-responsive graft copolymer by using a novel macro-RAFT agent and its application for drug delivery

    Energy Technology Data Exchange (ETDEWEB)

    Song, Cunfeng; Yu, Shirong [Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005 (China); Liu, Cheng; Deng, Yuanming; Xu, Yiting [Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005 (China); Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen 361005 (China); Chen, Xiaoling, E-mail: tinachen0628@163.com [Department of Endodontics, Xiamen Stomatology Hospital, Teaching Hospital of Fujian Medical University, Xiamen 361003 (China); Dai, Lizong, E-mail: lzdai@xmu.edu.cn [Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005 (China); Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen 361005 (China)

    2016-05-01

    A methodology to prepare thermo-responsive graft copolymer by using a novel macro-RAFT agent was proposed. The macro-RAFT agent with pendant dithioester (ZC(S)SR) was facilely prepared via the combination of RAFT polymerization and esterification reaction. By means of ZC(S)SR-initiated RAFT polymerization, the thermo-responsive graft copolymer consisting of poly(methyl methacrylate-co-hydroxylethyl methacrylate) (P(MMA-co-HEMA)) backbone and hydrophilic poly(N-isopropylacrylamide) (PNIPAAm) side chains was constructed through the “grafting from” approach. The chemical compositions and molecular weight distributions of the synthesized polymers were respectively characterized by {sup 1}H nuclear magnetic resonance ({sup 1}H NMR) and gel permeation chromatography (GPC). Self-assembly behavior of the amphiphilic graft copolymers (P(MMA-co-HEMA)-g-PNIPAAm) was studied by transmission electron microscopy (TEM), dynamic light scattering (DLS) and spectrofluorimeter. The critical micelle concentration (CMC) value was 0.052 mg mL{sup −1}. These micelles have thermo-responsibility and a low critical solution temperature (LCST) of 33.5 °C. Further investigation indicated that the guest molecule release property of these micelles, which can be well described by a first-order kinetic model, was significantly affected by temperature. Besides, the micelles exhibited excellent biocompatibility and cellular uptake property. Hence, these micelles are considered to have potential application in controlled drug delivery. - Highlights: • A novel macro-RAFT agent with ZC(S)SR was used for preparing graft copolymer. • P(MMA-co-HEMA)-g-PNIPAAm was successful prepared via the “grafting from” approach. • Thermo-responsibility of the P(MMA-co-HEMA)-g-PNIPAAm micelles was investigated. • The drug release behavior of the P(MMA-co-HEMA)-g-PNIPAAm micelles was studied. • These micelles exhibited excellent biocompatibility and cellular uptake property.

  1. Genetic variants on chromosome 1q41 influence ocular axial length and high myopia.

    Directory of Open Access Journals (Sweden)

    Qiao Fan

    Full Text Available As one of the leading causes of visual impairment and blindness, myopia poses a significant public health burden in Asia. The primary determinant of myopia is an elongated ocular axial length (AL. Here we report a meta-analysis of three genome-wide association studies on AL conducted in 1,860 Chinese adults, 929 Chinese children, and 2,155 Malay adults. We identified a genetic locus on chromosome 1q41 harboring the zinc-finger 11B pseudogene ZC3H11B showing genome-wide significant association with AL variation (rs4373767, β = -0.16 mm per minor allele, P(meta =2.69 × 10(-10. The minor C allele of rs4373767 was also observed to significantly associate with decreased susceptibility to high myopia (per-allele odds ratio (OR =0.75, 95% CI: 0.68-0.84, P(meta =4.38 × 10(-7 in 1,118 highly myopic cases and 5,433 controls. ZC3H11B and two neighboring genes SLC30A10 and LYPLAL1 were expressed in the human neural retina, retinal pigment epithelium, and sclera. In an experimental myopia mouse model, we observed significant alterations to gene and protein expression in the retina and sclera of the unilateral induced myopic eyes for the murine genes ZC3H11A, SLC30A10, and LYPLAL1. This supports the likely role of genetic variants at chromosome 1q41 in influencing AL variation and high myopia.

  2. The complete genome sequence of 'Candidatus Liberibacter solanacearum', the bacterium associated with potato zebra chip disease.

    Science.gov (United States)

    Lin, Hong; Lou, Binghai; Glynn, Jonathan M; Doddapaneni, Harshavardhan; Civerolo, Edwin L; Chen, Chuanwu; Duan, Yongping; Zhou, Lijuan; Vahling, Cheryl M

    2011-04-28

    Zebra Chip (ZC) is an emerging plant disease that causes aboveground decline of potato shoots and generally results in unusable tubers. This disease has led to multi-million dollar losses for growers in the central and western United States over the past decade and impacts the livelihood of potato farmers in Mexico and New Zealand. ZC is associated with 'Candidatus Liberibacter solanacearum', a fastidious alpha-proteobacterium that is transmitted by a phloem-feeding psyllid vector, Bactericera cockerelli Sulc. Research on this disease has been hampered by a lack of robust culture methods and paucity of genome sequence information for 'Ca. L. solanacearum'. Here we present the sequence of the 1.26 Mbp metagenome of 'Ca. L. solanacearum', based on DNA isolated from potato psyllids. The coding inventory of the 'Ca. L. solanacearum' genome was analyzed and compared to related Rhizobiaceae to better understand 'Ca. L. solanacearum' physiology and identify potential targets to develop improved treatment strategies. This analysis revealed a number of unique transporters and pathways, all potentially contributing to ZC pathogenesis. Some of these factors may have been acquired through horizontal gene transfer. Taxonomically, 'Ca. L. solanacearum' is related to 'Ca. L. asiaticus', a suspected causative agent of citrus huanglongbing, yet many genome rearrangements and several gene gains/losses are evident when comparing these two Liberibacter. species. Relative to 'Ca. L. asiaticus', 'Ca. L. solanacearum' probably has reduced capacity for nucleic acid modification, increased amino acid and vitamin biosynthesis functionalities, and gained a high-affinity iron transport system characteristic of several pathogenic microbes.

  3. The Complete Genome Sequence of ‘Candidatus Liberibacter solanacearum’, the Bacterium Associated with Potato Zebra Chip Disease

    Science.gov (United States)

    Lin, Hong; Civerolo, Edwin L.; Chen, Chuanwu; Duan, Yongping; Zhou, Lijuan; Vahling, Cheryl M.

    2011-01-01

    Zebra Chip (ZC) is an emerging plant disease that causes aboveground decline of potato shoots and generally results in unusable tubers. This disease has led to multi-million dollar losses for growers in the central and western United States over the past decade and impacts the livelihood of potato farmers in Mexico and New Zealand. ZC is associated with ‘Candidatus Liberibacter solanacearum’, a fastidious alpha-proteobacterium that is transmitted by a phloem-feeding psyllid vector, Bactericera cockerelli Sulc. Research on this disease has been hampered by a lack of robust culture methods and paucity of genome sequence information for ‘Ca. L. solanacearum’. Here we present the sequence of the 1.26 Mbp metagenome of ‘Ca. L. solanacearum’, based on DNA isolated from potato psyllids. The coding inventory of the ‘Ca. L. solanacearum’ genome was analyzed and compared to related Rhizobiaceae to better understand ‘Ca. L. solanacearum’ physiology and identify potential targets to develop improved treatment strategies. This analysis revealed a number of unique transporters and pathways, all potentially contributing to ZC pathogenesis. Some of these factors may have been acquired through horizontal gene transfer. Taxonomically, ‘Ca. L. solanacearum’ is related to ‘Ca. L. asiaticus’, a suspected causative agent of citrus huanglongbing, yet many genome rearrangements and several gene gains/losses are evident when comparing these two Liberibacter. species. Relative to ‘Ca. L. asiaticus’, ‘Ca. L. solanacearum’ probably has reduced capacity for nucleic acid modification, increased amino acid and vitamin biosynthesis functionalities, and gained a high-affinity iron transport system characteristic of several pathogenic microbes. PMID:21552483

  4. Observed variability in the upper layers at the Equator, 90°E in the Indian Ocean during 2001-2008, 1: zonal currents

    Science.gov (United States)

    Rao, R. R.; Horii, T.; Masumoto, Y.; Mizuno, K.

    2016-06-01

    The observed variability of zonal currents (ZC) at the Equator, 90°E shows a strong seasonal cycle in the near-surface 40-350 m water column with periodic east-west reversals most pronounced at semiannual frequency. Superposed on this, a strong intraseasonal variability of 30-90 day periodicity is also prominently seen in the near-surface layer (40-80 m) almost throughout the year with the only exception of February-March. An eastward flowing equatorial undercurrent (EUC) is present in the depth range of 80-160 m during March-April and October-November. The observed intraseasonal variability in the near-surface layer is primarily determined by the equatorial zonal westerly wind bursts (WWBs) through local frictional coupling between the zonal flow in the surface layer and surface zonal winds and shows large interannual variability. The eastward flowing EUC maintained by the ZPG set up by the east-west slope of the thermocline remotely controlled by the zonal wind (ZW) and zonally propagating wave fields also shows significant interannual variability. This observed variability on interannual time scales appears to be controlled by the corresponding variability in the alongshore winds off the Somalia coast during the preceding boreal winter, the ZW field along the equator, and the associated zonally propagating Kelvin and Rossby waves. The salinity induced vertical stratification observed in the near-surface layer through barrier layer thickness (BLT) effects also shows a significant influence on the ZC field on intraseasonal time scale. Interestingly, among all the 8 years (2001-2008), relatively weaker annual cycle is seen in both ZC in the 40-350 m water column and boreal spring sea surface temperature (SST) only during 2001 and 2008 along the equator caused through propagating wave dynamics.

  5. Interfacial toughness of bilayer dental ceramics based on a short-bar, chevron-notch test.

    Science.gov (United States)

    Anunmana, Chuchai; Anusavice, Kenneth J; Mecholsky, John J

    2010-02-01

    The objective of this study was to test the null hypothesis that the interfacial toughness of each of two types of bonded core-veneer bilayer ceramics is not significantly different from the apparent fracture toughness of the control monolithic glass veneer. T-shaped short-bars of a lithia-disilicate glass-ceramic core (LC) and yttria-stabilized polycrystalline zirconia core ceramic (ZC) were prepared according to the manufacturer's recommendations. V-shaped notches were prepared by using 25-mum-thick palladium foil, leaving the chevron-notch area exposed, and the bars were veneered with a thermally compatible glass veneer (LC/GV and ZC/GV). Additionally, we also bonded the glass veneer to itself as a control group (GV/GV). Specimens were kept in distilled water for 30 days before testing in tension. Eight glass veneer bars were prepared for the analysis of fracture toughness test using the indentation-strength technique. The mean interfacial toughness of the LC/GV group was 0.69 MPam(1/2) (0.11), and did not significantly differ from that of the GV/GV control group, 0.74 MPam(1/2) (0.17) (p>0.05). However, the difference between the mean interfacial toughness of the ZC/GV group, 0.13 MPam(1/2) (0.07), and the LC/GV and the GV/GV groups was statistically significant (p<0.05). For bilayer all-ceramic restorations with high-strength core materials, the veneering ceramics are the weakest link in the design of the structure. Since all-ceramic restorations often fail from chipping of veneer layers or crack initiation at the interface, the protective effects of thermal mismatch stresses oral prosthesis design should be investigated. Copyright 2009 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

  6. CONTENIDO DE POLIAMINAS LIBRES EN PALMAS AFECTADAS POR PUDRICION DEL COGOLLO EN LAS ZONAS CENTRAL Y OCCIDENTAL DE COLOMBIA

    Directory of Open Access Journals (Sweden)

    Prada Fausto

    2010-04-01

    Full Text Available La pudrición del cogollo (PC es la principal enfermedad de la palma en Colombia. En las zonas palmeras Central (ZC y Oriental (ZE, las palmas enfermas pueden recuperarse naturalmente. En la Zona Occidental (ZW el proceso de recuperación no es evidente. La recuperación de palmas está ligada a gran actividad meristemática que podría involucrar la acción inductora de metabolitos como las poliaminas (PA. Este trabajo muestra la relación entre poliaminas del meristemo y la capacidad de recuperación de palmas con PC, en dos zonas agroclimáticas diferentes. Poliaminas extraídas del meristemo de palmas sembradas en ZC y ZW, fueron analizadas por HPLC. En ZC, donde existe recuperación espontánea, los niveles más altos de PA se presentan en palmas sanas y en recuperación y a medida que avanza la enfermedad la concentración desciende hasta un mínimo en el estado de PC inicial (PCI. Luego la concentración de PA aumenta hasta el estado de Buena Recuperación (BR donde los valores de poliaminas son más altos que los de palmas sanas. En la ZW, con la enfermedad el contenido de PA aumenta llegando al máximo en plantas sin recuperación y el mínimo se presenta en plantas sanas. Las diferencias entre zonas pueden explicarse por diferentes roles de las poliaminas en plantas. En la ZC la cantidad elevada de PA en palmas sanas o en recuperación funcionaría en la inducción de actividad meristemática, para la recuperación espontánea. En la ZW el aumento en el contenido de PA con la enfermedad induciría la generación de especies reactivas de oxígeno para defensa secundaria de la planta ante la imposibilidad de, a través de incrementos en la actividad meristemática producir rápidamente estructuras sanas que no sean reinfectadas.

  7. PROLİFERATİF PERİOSTİTİS (GARRE OSTEOMİYELİTİ): LİTERATÜR DERLEMESİ VE OLGU BİLDİRİMİ-PROLIFERATIVE PERIOSTITIS (GARRÈ'S OSTEOMYELITIS) : REVIEW OF THE LITERATURE AND A CASE REPORT

    OpenAIRE

    Yaman, Zekai; ÖZKAL, Şevket

    2012-01-01

    ÖzetGarre osteomiyelili olarak da bilinen ProliferatifAnahtar sözcükler: Proliferatif periostİtis, Garre oste-omiyeliti, mandibula, olgu sunumu.AbstractProliferative periostitis, commonly known asIn this study a case of proliferative periostitis of mandible due to periapical infection originating from the lower deciduous second molar tooth in a eight-year old child is reported. All of the classical features of proliferative periostitis were seen except for tiie cutaneous fistulas with pus dra...

  8. Search for single top production in e+e- collisions at sqrt(s) up to 209 GeV

    Science.gov (United States)

    ALEPH Collaboration; Heister, A.; Schael, S.; Barate, R.; Brunelière, R.; de Bonis, I.; Decamp, D.; Goy, C.; Jezequel, S.; Lees, J.-P.; Martin, F.; Merle, E.; Minard, M.-N.; Pietrzyk, B.; Trocmé, B.; Boix, G.; Bravo, S.; Casado, M. P.; Chmeissani, M.; Crespo, J. M.; Fernandez, E.; Fernandez-Bosman, M.; Garrido, Ll.; Graugés, E.; Lopez, J.; Martinez, M.; Merino, G.; Pacheco, A.; Paneque, D.; Ruiz, H.; Colaleo, A.; Creanza, D.; de Filippis, N.; de Palma, M.; Iaselli, G.; Maggi, G.; Maggi, M.; Nuzzo, S.; Ranieri, A.; Raso, G.; Ruggieri, F.; Selvaggi, G.; Silvestris, L.; Tempesta, P.; Tricomi, A.; Zito, G.; Huang, X.; Lin, J.; Ouyang, Q.; Wang, T.; Xie, Y.; Xu, R.; Xue, S.; Zhang, J.; Zhang, L.; Zhao, W.; Abbaneo, D.; Azzurri, P.; Barklow, T.; Buchmüller, O.; Cattaneo, M.; Cerutti, F.; Clerbaux, B.; Drevermann, H.; Forty, R. W.; Frank, M.; Gianotti, F.; Greening, T. C.; Hansen, J. B.; Harvey, J.; Hutchcroft, D. E.; Janot, P.; Jost, B.; Kado, M.; Mato, P.; Moutoussi, A.; Ranjard, F.; Rolandi, L.; Schlatter, D.; Sguazzoni, G.; Tejessy, W.; Teubert, F.; Valassi, A.; Videau, I.; Ward, J. J.; Badaud, F.; Dessagne, S.; Falvard, A.; Fayolle, D.; Gay, P.; Jousset, J.; Michel, B.; Monteil, S.; Pallin, D.; Pascolo, J. M.; Perret, P.; Hansen, J. D.; Hansen, J. R.; Hansen, P. H.; Nilsson, B. S.; Kyriakis, A.; Markou, C.; Simopoulou, E.; Vayaki, A.; Zachariadou, K.; Blondel, A.; Brient, J.-C.; Machefert, F.; Rougé, A.; Swynghedauw, M.; Tanaka, R.; Videau, H.; Ciulli, V.; Focardi, E.; Parrini, G.; Antonelli, A.; Antonelli, M.; Bencivenni, G.; Bossi, F.; Capon, G.; Chiarella, V.; Laurelli, P.; Mannocchi, G.; Murtas, G. P.; Passalacqua, L.; Kennedy, J.; Lynch, J. G.; Negus, P.; O'Shea, V.; Thompson, A. S.; Wasserbaech, S.; Cavanaugh, R.; Dhamotharan, S.; Geweniger, C.; Hanke, P.; Hepp, V.; Kluge, E. E.; Leibenguth, G.; Putzer, A.; Stenzel, H.; Tittel, K.; Wunsch, M.; Beuselinck, R.; Cameron, W.; Davies, G.; Dornan, P. J.; Girone, M.; Hill, R. D.; Marinelli, N.; Nowell, J.; Rutherford, S. A.; Sedgbeer, J. K.; Thompson, J. C.; White, R.; Ghete, V. M.; Girtler, P.; Kneringer, E.; Kuhn, D.; Rudolph, G.; Bouhova-Thacker, E.; Bowdery, C. K.; Clarke, D. P.; Ellis, G.; Finch, A. J.; Foster, F.; Hughes, G.; Jones, R. W. L.; Pearson, M. R.; Robertson, N. A.; Smizanska, M.; van der Aa, O.; Delaere, C.; Lemaitre, V.; Blumenschein, U.; Hölldorfer, F.; Jakobs, K.; Kayser, F.; Kleinknecht, K.; Müller, A.-S.; Quast, G.; Renk, B.; Sander, H.-G.; Schmeling, S.; Wachsmuth, H.; Zeitnitz, C.; Ziegler, T.; Bonissent, A.; Coyle, P.; Curtil, C.; Ealet, A.; Fouchez, D.; Payre, P.; Tilquin, A.; Ragusa, F.; David, A.; Dietl, H.; Ganis, G.; Hüttmann, K.; Lütjens, G.; Männer, W.; Moser, H.-G.; Settles, R.; Wolf, G.; Boucrot, J.; Callot, O.; Davier, M.; Duflot, L.; Grivaz, J.-F.; Heusse, Ph.; Jacholkowska, A.; Serin, L.; Veillet, J.-J.; de Vivie de Régie, J.-B.; Yuan, C.; Bagliesi, G.; Boccali, T.; Foà, L.; Giammanco, A.; Giassi, A.; Ligabue, F.; Messineo, A.; Palla, F.; Sanguinetti, G.; Sciabà, A.; Tenchini, R.; Venturi, A.; Verdini, P. G.; Awunor, O.; Blair, G. A.; Cowan, G.; Garcia-Bellido, A.; Green, M. G.; Jones, L. T.; Medcalf, T.; Misiejuk, A.; Strong, J. A.; Teixeira-Dias, P.; Clifft, R. W.; Edgecock, T. R.; Norton, P. R.; Tomalin, I. R.; Bloch-Devaux, B.; Boumediene, D.; Colas, P.; Fabbro, B.; Lançon, E.; Lemaire, M.-C.; Locci, E.; Perez, P.; Rander, J.; Tuchming, B.; Vallage, B.; Konstantinidis, N.; Litke, A. M.; Taylor, G.; Booth, C. N.; Cartwright, S.; Combley, F.; Hodgson, P. N.; Lehto, M.; Thompson, L. F.; Böhrer, A.; Brandt, S.; Grupen, C.; Hess, J.; Ngac, A.; Prange, G.; Sieler, U.; Borean, C.; Giannini, G.; He, H.; Putz, J.; Rothberg, J.; Armstrong, S. R.; Berkelman, K.; Cranmer, K.; Ferguson, D. P. S.; Gao, Y.; González, S.; Hayes, O. J.; Hu, H.; Jin, S.; Kile, J.; McNamara, P. A.; Nielsen, J.; Pan, Y. B.; von Wimmersperg-Toeller, J. H.; Wiedenmann, W.; Wu, J.; Wu, Sau Lan; Wu, X.; Zobernig, G.; Dissertori, G.

    2002-09-01

    Single top production via the flavour changing neutral current reactions e+e--->t¯c,t¯u is searched for within the 214 pb-1 of data collected by ALEPH at centre-of-mass energies between 204 and 209 GeV. No deviation from the Standard Model expectation is observed and upper limits on the single top production cross sections are derived. The combination with data collected at lower centre-of-mass energies yields an upper limit on the branching ratio BR(t-->Zc)+BR(t-->Zu)γc)+BR(t-->γu)=0 and mt=174 GeV/c2.

  9. Search for Single Top Production in $e^{+} e^{-}$ Collisions at $\\sqrt{s}$ up to 209 GeV

    CERN Document Server

    Heister, A; Barate, R; Brunelière, R; De Bonis, I; Décamp, D; Goy, C; Jézéquel, S; Lees, J P; Martin, F; Merle, E; Minard, M N; Pietrzyk, B; Trocmé, B; Boix, G; Bravo, S; Casado, M P; Chmeissani, M; Crespo, J M; Fernández, E; Fernández-Bosman, M; Garrido, L; Graugès-Pous, E; López, J; Martínez, M; Merino, G; Pacheco, A; Paneque, D; Ruiz, H; Colaleo, A; Creanza, D; De Filippis, N; De Palma, M; Iaselli, Giuseppe; Maggi, G; Maggi, M; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Abbaneo, D; Azzurri, P; Barklow, Timothy L; Buchmüller, O L; Cattaneo, M; Cerutti, F; Clerbaux, B; Drevermann, H; Forty, Roger W; Frank, M; Gianotti, F; Greening, T C; Hansen, J B; Harvey, J; Hutchcroft, D E; Janot, P; Jost, B; Kado, M; Mato, P; Moutoussi, A; Ranjard, F; Rolandi, Luigi; Schlatter, W D; Sguazzoni, G; Tejessy, W; Teubert, F; Valassi, Andrea; Videau, I; Ward, J J; Badaud, F; Dessagne, S; Falvard, A; Fayolle, D; Gay, P; Jousset, J; Michel, B; Monteil, S; Pallin, D; Pascolo, J M; Perret, P; Hansen, J D; Hansen, J R; Hansen, P H; Nilsson, B S; Kyriakis, A; Markou, C; Simopoulou, Errietta; Vayaki, Anna; Zachariadou, K; Blondel, A; Brient, J C; Machefert, F P; Rougé, A; Swynghedauw, M; Tanaka, R; Videau, H L; Ciulli, V; Focardi, E; Parrini, G; Antonelli, A; Antonelli, M; Bencivenni, G; Bossi, F; Capon, G; Chiarella, V; Laurelli, P; Mannocchi, G; Murtas, G P; Passalacqua, L; Kennedy, J; Lynch, J G; Negus, P; O'Shea, V; Thompson, A S; Wasserbaech, S R; Cavanaugh, R J; Dhamotharan, S; Geweniger, C; Hanke, P; Hepp, V; Kluge, E E; Leibenguth, G; Putzer, A; Stenzel, H; Tittel, K; Wunsch, M; Beuselinck, R; Cameron, W; Davies, G; Dornan, Peter J; Girone, M; Hill, R D; Marinelli, N; Nowell, J; Rutherford, S A; Sedgbeer, J K; Thompson, J C; White, R; Ghete, V M; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Bouhova-Thacker, E; Bowdery, C K; Clarke, D P; Ellis, G; Finch, A J; Foster, F; Hughes, G; Jones, R W L; Pearson, M R; Robertson, N A; Smizanska, M; van der Aa, O; Delaere, C; Lemaître, V; Blumenschein, U; Hölldorfer, F; Jakobs, K; Kayser, F J; Kleinknecht, K; Müller, A S; Quast, G; Renk, B; Sander, H G; Schmeling, S; Wachsmuth, H W; Zeitnitz, C; Ziegler, T; Bonissent, A; Coyle, P; Curtil, C; Ealet, A; Fouchez, D; Payre, P; Tilquin, A; Ragusa, F; David, A; Dietl, H; Ganis, G; Hüttmann, K; Lütjens, G; Männer, W; Moser, H G; Settles, Ronald; Wolf, G; Boucrot, J; Callot, O; Davier, M; Duflot, L; Grivaz, J F; Heusse, P; Jacholkowska, A; Serin, L; Veillet, J J; De Vivie de Régie, J B; Yuan, C; Bagliesi, G; Boccali, T; Foà, L; Giammanco, A; Giassi, A; Ligabue, F; Messineo, A; Palla, Fabrizio; Sanguinetti, G; Sciabà, A; Tenchini, Roberto; Venturi, A; Verdini, P G; Awunor, O; Blair, G A; Cowan, G; García-Bellido, A; Green, M G; Jones, L T; Medcalf, T; Misiejuk, A; Strong, J A; Teixeira-Dias, P; Clifft, R W; Edgecock, T R; Norton, P R; Tomalin, I R; Bloch-Devaux, B; Boumediene, D E; Colas, P; Fabbro, B; Lançon, E; Lemaire, M C; Locci, E; Pérez, P; Rander, J; Tuchming, B; Vallage, B; Konstantinidis, N P; Litke, A M; Taylor, G; Booth, C N; Cartwright, S L; Combley, F; Hodgson, P N; Lehto, M H; Thompson, L F; Böhrer, A; Brandt, S; Grupen, Claus; Hess, J; Ngac, A; Prange, G; Sieler, U; Borean, C; Giannini, G; He, H; Pütz, J; Rothberg, J E; Armstrong, S R; Berkelman, K; Cranmer, K; Ferguson, D P S; Gao, Y; González, S; Hayes, O J; Hu, H; Jin, S; Kile, J; McNamara, P A; Nielsen, J; Pan, Y B; Von Wimmersperg-Töller, J H; Wiedenmann, W; Wu, J; Wu Sau Lan; Wu, X; Zobernig, G; Dissertori, G

    2002-01-01

    Single top production via the flavour changing neutral current reactions e+e- -> \\bar{t}c , \\bar{t}u is searched for within the 214~pb-1 of data collected by ALEPH at centre-of-mass energies between 204 and 209~GeV. No deviation from the Standard Model expectation is observed and upper limits on the single top production cross sections are derived. The combination with data collected at lower centre-of-mass energies yields an upper limit on the branching ratio BR(t -> Zc)+BR(t -> Zu) \\gamma c)+BR(t -> \\gamma u)= 0 and mt=174 GeV/c2$.

  10. CONTENIDO DE POLIAMINAS LIBRES EN PALMAS AFECTADAS POR PUDRICION DEL COGOLLO EN LAS ZONAS CENTRAL Y OCCIDENTAL DE COLOMBIA FREE POLYAMINE CONTENT ON OIL PALMS AFECTED BY BUD ROT IN THE COLOMBIAN CENTRAL AND WESTERN PALM REGIONS

    Directory of Open Access Journals (Sweden)

    Viviana Correa

    Full Text Available La pudrición del cogollo (PC es la principal enfermedad de la palma en Colombia. En las zonas palmeras Central (ZC y Oriental (ZOR, las palmas enfermas pueden recuperarse naturalmente. En la Zona Occidental (ZOCC el proceso de recuperación no es evidente. La recuperación de palmas está ligada a gran actividad meristemática que podría involucrar la acción de metabolitos como las poliaminas (PA. Este trabajo muestra la relación entre el contenido de poliaminas en el meristemo y la capacidad de recuperación de palmas con PC, en dos zonas agroclimáticas diferentes. Poliaminas extraídas del meristemo de palmas en ZC y ZOCC, fueron analizadas por HPLC. En ZC, donde existe recuperación espontánea, los niveles más altos de PA se presentan en palmas sanas y en recuperación y a medida que avanza la enfermedad la concentración desciende hasta un mínimo en el estado de PC inicial. Luego la concentración de PA aumenta hasta el estado de Buena Recuperación donde los valores de poliaminas son más altos que los de palmas sanas. En la ZOCC , el contenido de PA aumenta con la enfermedad llegando al máximo en plantas sin recuperación y el mínimo en plantas sanas. Las diferencias entre zonas pueden explicarse por los diferentes roles de las poliaminas en plantas. En la ZC la cantidad elevada de PA en palmas sanas o en recuperación funcionaría en la inducción de actividad meristemática, para la recuperación espontánea. En la ZOCC el aumento en el contenido de PA con la enfermedad puede estar relacionado con la producción de especies reactivas de oxigeno para defensa secundaria contra patógenos. A diferencia de lo observado en ZC , las plantas en ZOCC no pueden producir estructuras sanas que no sean re infectadas, por lo tanto los elevados contenidos de PA no están relacionados con la promoción de la actividad meristemáticaBud Rot complex (BR is the major disease of oil palm in Colombia . In the Central (ZC and Eastern (ZE oil palm

  11. Mooring Mechanics. A Comprehensive Computer Study. Volume II. Three Dimensional Dynamic Analysis of Moored and Drifting Buoy Systems

    Science.gov (United States)

    1976-12-01

    If point p and w are overlapping then: [Rpw]E R pw]B VBw VEw Ec - EB x Rcp -2.2- Here; VEw i (V +t + i (0 + ) + *w x ox x y 1, y 1i ( Voz + Cz) and...VBw =ix[Vox + 4x -x - Z’cose] + +i z[ Voz + (D - Zc + z’Osinf] = x [ (Vox + Ox - C)cose A - ( Voz + 0z - zo )Sin6 - z’g] + iz’[(Vox + ox " )sinO + ( Voz

  12. Hadronic molecules with hidden charm and bottom

    Directory of Open Access Journals (Sweden)

    Guo Feng-Kun

    2016-01-01

    Full Text Available Many of the new structures observed since 2003 in experiments in the heavy quarkonium mass region, such as the X(3872 and Zc (3900, are rather close to certain thresholds, and thus can be good candidates of hadronic molecules, which are loose bound systems of hadrons. We will discuss the consequences of heavy quark symmetry for hadronic molecules with heavy quarks. We will also emphasize that the hadronic molecular component of a given structure can be directly probed in long-distance processes, while the short-distance processes are not sensitive to it.

  13. 热锻

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    A study on precision cold forging process improvements for the steering yoke of automobiles by the rigid-plastic finite-element method;Alloy designing of high strength steels for hot forging; Analysis of the friction and wear behavtour of not work tool steel for forging;Application of 3D hot forging process simulation for V6 engine crankshaft; AZ80 and ZC71/SiC/12p closed die torglngs for automotive applications: technical and economic assessment of possible mass production

  14. JOHN LOCKE'UN AHLAK ÜZERİNE DÜŞÜNCELERİ

    OpenAIRE

    Cihan, Mustafa

    2010-01-01

    ÖZETJohn Locke, pek çok konuda olduğu gibi, ahlak konusunda daönemli düşünceler or/aya koymuştur.O, ahlak konusundaki düşüncelerinesistematik bir form vermemiştir. Ancak epistemoloji ve din felsefesi alanlarıile bağlantılı ahlak sorununu ele almıştır. Nitekim Locke, açısından ahlaksalolanın temellendirilmesi felsefenin önemli bir amacıdır.Anahtar Sözcükler: Locke, epistemoloji, ampirizm, ahl...

  15. DİŞ HEKİMLİĞİNDE KAVİTE LAKLARI-CAVITY VARNISHES IN DENTISTRY

    OpenAIRE

    Ulukapı, Işın

    2012-01-01

    Anahtar sözcükler: Kenar sızıntısı, Kavite lakları.Birçok dolgu maddesi kenar sızıntısı göstermektedir. Yeni yerleştirilmişMost dental materials permit microleakage. A crevice always exists at the freshly condensed amalgam-tooth interface that is sujiciently large Jbr microorganisms and oral fluids to pass along the cavityJt has been demonstrated that preparations lined withIn this paper general information about the structure of the cavity varnishes, the method and field of using them is giv...

  16. 三角形界心的又一条性质

    Institute of Scientific and Technical Information of China (English)

    尹广金

    2002-01-01

    @@ 本文将在文献[1]、[2]的基础上给出三角形界心的一个新性质. 定理如图1,设△ABC的周界中线为AD、BE、CF,界心为J,X是AD上的一点且XA=JD,Y是BE上一点且YB=JE,Z是CF上任意一点且ZC=JF,则△XYZ的外接圆为△ABC的内切圆.

  17. APPECT: An Approximate Backbone-Based Clustering Algorithm for Tags

    DEFF Research Database (Denmark)

    Zong, Yu; Xu, Guandong; Jin, Pin

    2011-01-01

    algorithm for Tags (APPECT). The main steps of APPECT are: (1) we execute the K-means algorithm on a tag similarity matrix for M times and collect a set of tag clustering results Z={C1,C2,…,Cm}; (2) we form the approximate backbone of Z by executing a greedy search; (3) we fix the approximate backbone...... resulting from the severe difficulty of ambiguity, redundancy and less semantic nature of tags. Clustering method is a useful tool to address the aforementioned difficulties. Most of the researches on tag clustering are directly using traditional clustering algorithms such as K-means or Hierarchical...

  18. Stability of the Wurtzite Structure

    DEFF Research Database (Denmark)

    Lawætz, Peter

    1972-01-01

    An analysis of available data for 20 wurtzite compounds of the ANB8-N type shows that the stability as compared with zinc blende is closely connected with deviations of the c / a ratio from the ideal value of 1.633. A simple qualitative model is proposed to account for this feature. The variation...... in c / a is then correlated with the charge parameter ZC / ℏωp, where Z is the (effective) valence, C Phillips's electronegativity difference, and ℏωp the plasma energy of the free-valence-electron gas. The results indicate that c / a may be predicted with an uncertainty of 0.1%....

  19. Radio Frequency Spectrum Management

    Science.gov (United States)

    1980-03-01

    ed.). Approaches to Organizational Design. University of Pittsburg Press, 1971. Vroom , Victor H . Methods of Organizational Research. Uni- versity of...electromagnetic compatability standards for new system developments. The Director also has 82 C-, E- E-4 - 1-4 U E-44 0 0 J1b ci00 E- g -- 4 H ccn zc...00 z 000- E E- 0 .4 E 𔃾u - 0zn 04 E- C-7 c zz zi- 9xH 83 H the responsibility for determiing current and future require- ments for communications

  20. Passenger Vessel Damage Stability Study for 1990 SOLAS Amendments. Volume 2. Appendix B

    Science.gov (United States)

    1994-09-01

    Project No. DAMSTAB (by: DYER) 09-15-1993 RT!N@043: Oi1ZC OUNOG 198’ CaninO B30T CKPIZTNBNT ]FLOODING BU1O0RY FLOODED WTR % FULL % FULL SP.VOL. OUTFLOW...DAMSTAB (by: DYER) 10-25-1993 RTRN0143: POWP 3,4/F=UL (P) COTPARTXINT ’FLOODING UM Y22 6’ CANINO 0 FLOODED WTR % FULL % FULL SP.VOL. OUTFLOW At 0.4oP

  1. Generation and Correlation Characteristics of Complex Spreading Sequences for CDMA Wireless Communication

    Directory of Open Access Journals (Sweden)

    Poonam Goyal

    2013-07-01

    Full Text Available This paper presents complex spreading sequences (CSS for use in coded multiple access communication systems. The complex sequences such as Zadoff-Chu (ZC and Oppermann {&} Vucetic (OV are described here. These complex spreading sequences offers a very wide range of values for both auto-correlation (AC and cross-correlation (CC functions, allowing great flexibility in the selection of characteristics of sequence sets. The parameters such as mean-square aperiodic AC and CC values for various sequence sets are presented here

  2. DİYABETLİ HASTALARDA AĞIZ-DİŞ SORUNLARINA YAKLAŞIM-ORAL HYGIENE IN DIABETIC PATIENTS

    OpenAIRE

    Dinççağ, Nevin; Eren, Gamze

    2013-01-01

    ÖZETBu yazıda diş sorunları bulunan diyabetli hastaların ağız-diş ve medikal kontrolü, hastalığın fizyopatolojisi ve komplİkasyonları ile birlikte ayrıntılı olarak incelenmiştir.Anahtar sözcükler: Diyabetes mellitus, ağız hijyeni.ABSTRACTThis paper will review the pathophysiology and complications associated with the disease as well as the medical and dental management of the diabetic dental patient. 

  3. Some Studies on Strongly Regular Rings%关于强正则环的一些研究

    Institute of Scientific and Technical Information of China (English)

    崔顺; 吴俊

    2010-01-01

    主要证明了下列条件等价:(1)R是强正则环;(2)R是ELT-的半素环,且对于R的每一个本质左理想L,(R/L)R是平坦模,R的每一个极大左理想或极大右理想是GW-理想;(3)R是ZC-环,R的每一个极大本质左理想是GW-理想且R的每一个单奇异左模是GP-同射模或平坦模.

  4. Detección de Ca Liberibacter solanacearum y fitoplasmas en cultivo de papa (Solanum tuberosum L.) en el Valle de Toluca

    OpenAIRE

    Ana Tarin Gutiérrez-Ibáñez; Jesús Ricardo Sánchez Pale; Antonio Laguna Cerda; José Francisco Ramírez Dávila; Artemio Balbuena Melgarejo; Omar Guadalupe Alvarado Gómez

    2013-01-01

    Título en ingles: Detection of Ca Liberibacter solanacearum and phytoplasma in potato crop (Solanum tuberosum L.) in Toluca Valley Título corto: Detección de Ca Liberibacter solanacearum y fitoplasmas Resumen En México y Centro América se han detectado tubérculos de papa con manchado interno. Recientemente en Texas EUA a esta enfermedad se le ha denominado “Zebra Chip” (ZC) o rayado de la papa, los síntomas foliares se asemejan al síndrome denominado “Punta Morada de la Papa” (PMP) o enfermed...

  5. Moving Horizon Estimation on a Chip

    Science.gov (United States)

    2014-06-26

    Generator and MATLAB / Simulink as development tools, and the Zynq ZC702 board [14]–[16]. Vivado HLS, a high-level synthesis tool, allows the designer to...System Generator (SysGen) which is integrated with Simulink . SysGen generates the bit-stream for FPGA configuration, and a Hardware co-sim block for the...interfacing between FPGA and Simulink environment [14]. Step 4: Implementation on FPGA Through the hardware co-sim block generated from SysGen, the

  6. Nine Loci for Ocular Axial Length Identified through Genome-wide Association Studies, Including Shared Loci with Refractive Error

    OpenAIRE

    Cheng, Ching-Yu; Schache, Maria; Ikram, M. Kamran; Young, Terri L.; Guggenheim, Jeremy A.; Vitart, Veronique; MacGregor, Stuart; Verhoeven, Virginie J.M.; Barathi, Veluchamy A.; Liao, Jiemin; Hysi, Pirro G.; Bailey-Wilson, Joan E.; St. Pourcain, Beate; Kemp, John P.; McMahon, George

    2013-01-01

    Refractive errors are common eye disorders of public health importance worldwide. Ocular axial length (AL) is the major determinant of refraction and thus of myopia and hyperopia. We conducted a meta-analysis of genome-wide association studies for AL, combining 12,531 Europeans and 8,216 Asians. We identified eight genome-wide significant loci for AL (RSPO1, C3orf26, LAMA2, GJD2, ZNRF3, CD55, MIP, and ALPPL2) and confirmed one previously reported AL locus (ZC3H11B). Of the nine loci, five (LA...

  7. Cluster dynamics and universality of Ising lattice gases

    Science.gov (United States)

    Heringa, J. R.; Blöte, H. W. J.

    Lattice gases with nearest-neighbour exclusion are studied by means of Monte Carlo simulations with an efficient cluster algorithm. The critical dynamics is consistent with a dynamical exponent z=0 in the case of Wolff-like cluster updates for square and simple-cubic lattices in the studied range of lattice sizes. We find the critical activity zc=0.72020(4) for the body-centred cubic lattice. The critical exponents yh=2.475(8) and yt=1.61(6) disagree with an earlier study, but they do agree with the known values for the three-dimensional Ising universality class.

  8. „Dem Freunde auch das Innerste aufzuschließen“ Grenzen der Aufrichtigkeit in Tiecks Der blonde Eckbert

    OpenAIRE

    Bunke, Simon

    2014-01-01

    „Dem Freunde auch das Innerste aufzuschließen“Limits of Sincerity in Tiecks Der blonde EckbertMy paper argues that Ludwig Tiecks short text Der blonde Eckbert reflects upon the 18th century ideal of sincerity and shows its limits in the light of the new ideal of authenticity. When the underlying model of subjectivity erodes and discards ethicalfoundations of sincerity, the attempt of generating social bonding and friendshipthrough sincerity will lead to a catastrophe.Keywords / Anahtar Sözcük...

  9. GenBank blastx search result: AK242401 [KOME

    Lifescience Database Archive (English)

    Full Text Available AK242401 J080068F24 AF459919.1 AF459919 Bacillus licheniformis YuxH protein (yuxH) gene, partial cds; Yu...omplete cds; comPC gene, partial sequence; and competence two-component regulator ComA (comA) and YuxO protein (yuxO) genes, complete cds. BCT 6e-22 1 ... ...zC protein (yuzC), DegQ protein (degQ), ComQ protein (comQ), and competence pheromone p

  10. DİFENİLHİDANTOİN İLE OLUŞAN HİPERPLASTÎK DİŞETLERİNDE SEROTONİN (5-HT) DÜZEYİ-THE LEVEL OF SEROTONIN (5-HT) IN DIPHENYLHYDANTOIN-INDUCED HYPERPLASTIC GINGIVA

    OpenAIRE

    2013-01-01

    ÖZETBu çalışmada difenilhidantoinic oluşan hiperplastik dişetlerinde serotonin düzeyleri incelendi.Hiperplastik dişçilerinden alınan ekstrelerin, sıçan mide fundusunda serotonin benzeri aktivite göstermedikleri belirlendi.Anahtar sözcükler: Difenilhidantoin, serotonin, hiperlastik dişeti.ABSTRACTIn this work, the level of serotonin (S-HT) was investigated in diphenylhydantoin-induced hyperplastic gingiva.The extracts from the hyperplastic gingiva didn't appear to exert rather a serotonin-like...

  11. Lattice studies of charmonia and exotics

    CERN Document Server

    Prelovsek, Sasa

    2015-01-01

    The lattice QCD simulations of charmonia and exotic charmonium-like states are reviewed. I report on the first exploratory simulation of charmonium resonances above open charm threshold which takes into account the strong decay. The puzzles related to the first-excited scalar charmonia are discussed. Evidence for X(3872) is presented along with investigation of its Fock components. The $Z_c^+(3900)$ seems to emerge from the HALQCD approach as a result of the coupled channel effect $J/\\psi \\pi -D\\bar D^*$. The indication for the pentaquark bound state $\\eta_c N$ is presented.

  12. Space-Time Curvature Signatures in Bose-Einstein Condensates

    CERN Document Server

    Matos, Tonatiuh

    2015-01-01

    We derive a generalized Gross-Pitaevski (GP) equation immersed on a electromagnetic and a weak gravitational field starting from the covariant Complex Klein-Gordon field in a curved space-time. We compare it with the GP equation where the gravitational field is added by hand as an external potential. We show that there is a small difference of order $g z/c^2$ between them that could be measured in the future using Bose-Einstein Condensates (BEC). This represents the next order correction to the Newtonian gravity in a curved space-time.

  13. AcEST: DK954735 [AcEST

    Lifescience Database Archive (English)

    Full Text Available AC ■■Homology search results ■■ - Swiss-Prot (release 56.9) Link to BlastX Result : Swiss-Prot sp_hit_id Q7TMD5 Definition sp|Q7TMD5...ng significant alignments: (bits) Value sp|Q7TMD5|ZC3HE_RAT Zinc finger CCCH domain-containing protein 1... ...tein pstB ... 30 5.8 sp|Q2S081|PSTB_SALRD Phosphate import ATP-binding protein pstB O... 30 7.6 >sp|Q7TMD5

  14. AcEST: DK948386 [AcEST

    Lifescience Database Archive (English)

    Full Text Available ot (release 56.9) Link to BlastX Result : Swiss-Prot sp_hit_id Q7TMD5 Definition sp|Q7TMD5|ZC3HE_RAT Zinc fi.......................................done Score E Sequences producing significant alignments: (bits) Value sp|Q7TMD5...TP-binding protein pstB ... 30 8.1 sp|P60413|KR10C_HUMAN Keratin-associated protein 10-12 OS=Homo s... 27 8.2 >sp|Q7TMD5

  15. Effect of Zinc-Deficient Diet on Oral Tissues and Periodontal Indices in Rats

    OpenAIRE

    Seyedmajidi, Seyed Ali; Seyedmajidi, Maryam; Moghadamnia, Aliakbar; Khani, Zohreh; Zahedpasha, Samir; Jenabian, Niloofar; Jorsaraei, Gholamali; Halalkhor, Sohrab; Motallebnejad, Mina

    2014-01-01

    Zinc (Zn) as a nutritional factor affects the health of the oral tissues. This study was done for the evaluation of the effects of zinc deficiency on the oral tissues of rats. The study was carried out on 14 male Wistar rats, cessation of lactation on the 24th day after birth. The rats were randomly divided into two groups. Zinc deficient (ZD) diet was used for one group and another group was fed with a zinc-containing (ZC) diet. The alterations of the oral tissues in both groups were evaluat...

  16. BIGOT - NEPTUNE

    Science.gov (United States)

    1944-05-14

    2·rii 5 j"n inrrl 9 mchmr asi\\ raa :::: CLECNCAM rrce rrC) : r\\lnh PIB tUWloNfb-aCY SrrPj x nn, Xnrug cUt c c Yr* W Zc’CS;ii...8217.s rf ist l-lo1 aS tlis e 5th Lio;l.t Div. In suia:er 1941 zit, as reor-a ,:s z CS . . PZ DPiz in AFRICA ; entered TUIISI.I; e-rly 1943. It lras

  17. Stress Concentrations.

    Science.gov (United States)

    1982-09-01

    rAZ 8 - E 2. Z.C *C r -c? Cu = g 00C *U0~ * .2 .2- , ., 6 m C ., Cu ,o .2 00 z.. 0 05 !=~ G -V -j c .0 -0 0 :6 Crr - c CL - -C.~ ~~~ C. -. ~ - -C E 7...TechnologylMaCliona 21 Buffalo, VN Tork 14214 School Of ngianen Dr.- N. F. Kauiina Mechanics Battelle Colmus Laboratories profesor Joseph L. goe Atlanta...Corporation Professor Joseph A. Clark Applied Machernas P.O. Son 5415 Catholic University of America Urbana, Illinois 41601 ua.ington Beach

  18. Installation Restoration Program. Phase 1: Records Search, Arnold Engineering Development Center (AEDC), Tennessee

    Science.gov (United States)

    1984-10-01

    dione TFG Diazinon 2D Strychnine (1) Ammate (1) Diazinon 4E (1)( 2 ) Warfarin (1) AT 711 Flit MLO (1) Amine 2-4D (1 Insecticide 111 8868 (1) Daconil 277...Fog Concentrate) Diazinon 4E Wafarin Chlordane Flit- MLO Source: AEDC files. -D-2 D. 3 LANDFILL NO. 2 DRAWING FROM AEDC FILES...A lIver (Ag) ppm -Q&A ZC)., I) L-ccJ od/’a. ,ulfate (504). ppm -A_ _ _ _ _ inc (Zn), ppm -A - _____ 4ell Water Level, ft. j

  19. Fratura precoce da porcelana em restaurações com infra-estrutura de zircônia: influência de gradientes térmicos no desenvolvimento e magnitude de tensões residuais e transitórias

    OpenAIRE

    Benetti,Paula

    2012-01-01

    Esse estudo avaliou o desenvolvimento de tensões dentro da porcelana de restaurações metalo-cerâmicas (MC) e de zircônia-porcelana (ZC) como resultado de diferentes taxas de resfriamento a partir de temperaturas acima da transição vítrea (Tg). Restaurações unitárias (coroas) foram fabricadas com 1 ou 2 mm de espessura de porcelana. Termopares foram posicionados nas superfícies de cimentação (T1) e oclusal (T4) e inseridos na interface (T2) e dentro da porcelana (T3). Para o resfriamento rápid...

  20. Study of BB ¯*/DD ¯* bound states in a Bethe-Salpeter approach

    Science.gov (United States)

    He, Jun

    2014-10-01

    In this work the BB ¯*/DD ¯* system is studied in the Bethe-Salpeter approach with quasipotential approximation. In our calculation both direct and cross diagrams are included in the one-boson-exchange potential. The numerical results indicate the existence of an isoscalar bound state DD ¯* with JPC=1++, which may be related to the X(3872). In the isovector sector, no bound state is produced from the interactions of DD ¯* and BB ¯*, which suggests the molecular state explanations for Zb(10610) and Zc(3900) are excluded.

  1. A Study to Develop a Model for an Implementable Health Promotion Program for the United States Corps of Cadets at the United States Military Academy at West Point, New York

    Science.gov (United States)

    1988-11-01

    80 Yearbook Staff ... ............ .. 213 DEBATING ..... .............. .155 DRAMATICS . . .. . . . .... !8 r ) SCOUTING PARTICIPANTS ...... 643...Eagle Scout (men) or Gold Award (women) 117 VARSITY ATHLETICS: Letter Winner. .. . . . . . . . . . 1159 Team Captain . . . . . . . . . . . 740 Table 1...82170 In;~u L).( S: 00 EE 𔃺U) 4-0 >) -O 0)dU 44 : 0 Z:c q Nqr o V)J 0 0 )4-’ -1 4-J M ) ; )4 F-C- 𔃻 E- r.) U) - ( 0i U) (U 0 0t 0- - 0 Q,-0 W ro1 p-C

  2. APPECT: An Approximate Backbone-Based Clustering Algorithm for Tags

    DEFF Research Database (Denmark)

    Zong, Yu; Xu, Guandong; Jin, Pin

    2011-01-01

    algorithm for Tags (APPECT). The main steps of APPECT are: (1) we execute the K-means algorithm on a tag similarity matrix for M times and collect a set of tag clustering results Z={C1,C2,…,Cm}; (2) we form the approximate backbone of Z by executing a greedy search; (3) we fix the approximate backbone...... resulting from the severe difficulty of ambiguity, redundancy and less semantic nature of tags. Clustering method is a useful tool to address the aforementioned difficulties. Most of the researches on tag clustering are directly using traditional clustering algorithms such as K-means or Hierarchical...

  3. Some Aspects in the Development of High Performance Refractories for Iron and Steel Making in China

    Institute of Scientific and Technical Information of China (English)

    ZHONG Xiangchong; YE Fangbao

    2005-01-01

    In the past 25 years in China, to meet with the rapid increase in steel production accompanied by adoption of advanced metallurgical technologies, there has been fast development of China's refractories industry in production capacity, in quality improvement and in development of new products. Sophisticated high performance refractory materials mainly based on our rich reserves of magnesite, bauxite and flake graphite have been developed, such as carbon-bonded products, high purity oxide products, bauxite-based low creep and high strength high alumina bricks and LC, ULC and ZC castables. They have been used in blast furnaces, BOFs, EAFs, secondary refining and continuous casting with considerable improvement in service performance.

  4. Spectral characteristics of high-latitude raw 40 MHz cosmic noise signals

    Science.gov (United States)

    Hall, Chris M.

    2016-08-01

    Cosmic noise at 40 MHz is measured at Ny-Ålesund (79° N, 12° E) using a relative ionospheric opacity meter ("riometer"). A riometer is normally used to determine the degree to which cosmic noise is absorbed by the intervening ionosphere, giving an indication of ionisation of the atmosphere at altitudes lower than generally monitored by other instruments. The usual course is to determine a "quiet-day" variation, this representing the galactic noise signal itself in the absence of absorption; the current signal is then subtracted from this to arrive at absorption expressed in decibels (dB). By a variety of means and assumptions, it is thereafter possible to estimate electron density profiles in the very lowest reaches of the ionosphere. Here however, the entire signal, i.e. including the cosmic noise itself, will be examined and spectral characteristics identified. It will be seen that distinct spectral subranges are evident which can, in turn, be identified with non-Gaussian processes characterised by generalised Hurst exponents, α. Considering all periods greater than 1 h, α ≈ 24, an indication of fractional Brownian motion, whereas for periods greater than 1 day α ≈ 0.9 - approximately pink noise and just in the domain of fractional Gaussian noise. The results are compared with other physical processes, suggesting that absorption of cosmic noise is characterised by a generalised Hurst exponent ≈ 1.24 and thus non-persistent fractional Brownian motion, whereas generation of cosmic noise is characterised by a generalised Hurst exponent ≈ 1. The technique unfortunately did not result in clear physical understanding of the ionospheric phenomena, and thus, in this respect, the application was not successful; the analysis could, however, be used as a tool for instrument validation.

  5. NEW SUNS IN THE COSMOS?

    Energy Technology Data Exchange (ETDEWEB)

    De Freitas, D. B.; Leao, I. C.; Lopes, C. E. Ferreira; Paz-Chinchon, F.; Canto Martins, B. L.; Alves, S.; De Medeiros, J. R. [Departamento de Fisica, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN (Brazil); Catelan, M. [Departamento de Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile, Av. Vicuna Mackenna 4860, 782-0436 Macul, Santiago (Chile)

    2013-08-20

    The present work reports on the discovery of three stars that we have identified to be rotating Sun-like stars, based on rotational modulation signatures inferred from light curves from the CoRoT mission's Public Archives. In our analysis, we performed an initial selection based on the rotation period and position in the period-T{sub eff} diagram. This revealed that the stars CoRoT IDs 100746852, 102709980, and 105693572 provide potentially good matches to the Sun with a similar rotation period. To refine our analysis, we applied a novel procedure, taking into account the fluctuations of the features associated with photometric modulation at different time intervals and the fractality traces that are present in the light curves of the Sun and of these ''New Sun'' candidates alike. In this sense, we computed the so-called Hurst exponent for the referred stars, for a sample of 14 CoRoT stars with sub- and super-solar rotational periods, and for the Sun itself in its active and quiet phases. We found that the Hurst exponent can provide a strong discriminant of Sun-like behavior, going beyond what can be achieved with solely the rotation period itself. In particular, we find that CoRoT ID 105693572 is the star that most closely matches the solar rotation properties as far as the latter's imprints on light curve behavior are concerned. The stars CoRoT IDs 100746852 and 102709980 have significant smaller Hurst exponents than the Sun, notwithstanding their similarity in rotation periods.

  6. Extracting sensitive spectrum bands of rapeseed using multiscale multifractal detrended fluctuation analysis

    Science.gov (United States)

    Jiang, Shan; Wang, Fang; Shen, Luming; Liao, Guiping; Wang, Lin

    2017-03-01

    Spectrum technology has been widely used in crop non-destructive testing diagnosis for crop information acquisition. Since spectrum covers a wide range of bands, it is of critical importance to extract the sensitive bands. In this paper, we propose a methodology to extract the sensitive spectrum bands of rapeseed using multiscale multifractal detrended fluctuation analysis. Our obtained sensitive bands are relatively robust in the range of 534 nm-574 nm. Further, by using the multifractal parameter (Hurst exponent) of the extracted sensitive bands, we propose a prediction model to forecast the Soil and plant analyzer development values ((SPAD), often used as a parameter to indicate the chlorophyll content) and an identification model to distinguish the different planting patterns. Three vegetation indices (VIs) based on previous work are used for comparison. Three evaluation indicators, namely, the root mean square error, the correlation coefficient, and the relative error employed in the SPAD values prediction model all demonstrate that our Hurst exponent has the best performance. Four rapeseed compound planting factors, namely, seeding method, planting density, fertilizer type, and weed control method are considered in the identification model. The Youden indices calculated by the random decision forest method and the K-nearest neighbor method show that our Hurst exponent is superior to other three Vis, and their combination for the factor of seeding method. In addition, there is no significant difference among the five features for other three planting factors. This interesting finding suggests that the transplanting and the direct seeding would make a big difference in the growth of rapeseed.

  7. Long-term Trend and Fractal of Annual Runoff Process in Mainstream of Tarim River

    Institute of Scientific and Technical Information of China (English)

    XU Jianhua; CHEN Yaning; LI Weihong; DONG Shan

    2008-01-01

    Based on the time series data from the Aral hydrological station for the period of 1958-2005, the paper re-veals the long-term trend and fractal of the annual runoff process in the mainstream of the Tarim River by using thewavelet analysis method and the fractal theory. The main conclusions are as follows: 1) From a large time scale pointof view, i.e. the time scale of 16 (24) years, the annual runoff basically shows a slightly decreasing trend as a wholefrom 1958 to 2005. If the time scale is reduced to 8 (23) or 4 (22) years, the annual runoff still displays the basic trendas the large time scale, but it has fluctuated more obviously during the period. 2) The correlation dimension for theannual runoff process is 3.4307, non-integral, which indicates that the process has both fractal and chaotic characteris-tics. The correlation dimension is above 3, which means that at least four independent variables are needed to describethe dynamics of the annual runoff process. 3) The Hurst exponent for the first period (1958-1973) is 0.5036, whichequals 0.5 approximately and indicates that the annual runoff process is in chaos. The Hurst exponents for the second(1974-1989) and third (1990-2005) periods are both greater than 0.50, which indicate that the annual runoff processshowed a long-enduring characteristic in the two periods. The Hurst exponent for the period from 1990 to 2005 indi-cates that the annual runoffwill show a slightly increasing trend in the 16 years after 2005.

  8. Self-affine subglacial roughness: consequences for radar scattering and basal thaw discrimination from radio-echo sounding

    Science.gov (United States)

    Jordan, Thomas; Cooper, Michael; Schroeder, Dustin; Williams, Christopher; Paden, John; Siegert, Martin; Bamber, Jonathan

    2017-04-01

    Subglacial roughness can be determined at variety of length scales from radio-echo sounding (RES) data; either via statistical analysis of along-track topography, or inferred from basal radar scattering. Past studies have demonstrated that subglacial terrain exhibits self-affine (power-law) roughness scaling behaviour, but existing radar scattering models don't take this into account. Here we introduce a self-affine statistical framework that, for the first time, enables a consistent integration of roughness determined from subglacial topography with basal radar scattering. Using RES data from northern Greenland, we demonstrate that radar scattering is strongly topographically controlled by the Hurst (roughness power-law) exponent. Notably specular reflections are confined to regions with lower Hurst exponent, with diffuse scattering more typical in regions with higher Hurst exponent. Considering this relationship, we then assess the consequences of our self-affine roughness framework for the discrimination of basal thaw from RES. Unambiguous discrimination of the basal thermal state of ice sheets from RES is a complex, and currently unsolved, problem, with conventional basal reflection analysis greatly limited by uncertainty in radar attenuation. To mitigate the ambiguity of reflection analysis, the presence of a specular bed echo - as occurs for reflection from electrically deep subglacial lakes - has been proposed to serve as a necessary criteria for positive discrimination of basal thaw. Via a comparison between our RES-derived data and a recent prediction for the basal thermal state, we demonstrate that predicted thawed regions in northern Greenland exhibit an overall more diffuse scattering signature than frozen regions. This is in contradiction with the prior use of high reflection specularity as necessary criteria for the presence of basal thaw, and indicates that radar scattering is best viewed as being under direct topographic, rather than thermal

  9. Detrended-Fluctuation Analysis of Nematode Movement in Heterogeneous Environment

    Science.gov (United States)

    Hapca, S. M.; Gonzalez-Nieto, P.; Tarquis, A. M.

    2009-04-01

    We consider multifractal analysis in time scale to analyse the effect of structural heterogeneity on the movement of the slug-parasitic nematode, Phasmarhabditis hermaphrodita. The study involves image recording and analysis of nematode movement on a homogeneous layer of technical agar compared to movement of nematodes in a structurally heterogeneous environment that was created by adding sand particles to the plates of agar. The temporal scaling properties of the recorded trails were studied using a detrended fluctuation based method to capture the complex dynamic of movement data by comparing the multiscaling characteristics of nematode step lengths as affected by the different environments. A systematic analysis of the exponent of the structure function and the generalized Hurst exponent revealed that, while in homogeneous environment the movement was characterized by a long-range correlation with a Hurst exponent H(q) close to 1, varying little with respect to the order q of the fluctuation function, the impact of sand particle was to reduce the degree of persistence in the movement, the step lenghts being characterized by a smaller Hurst exponent, yet more variable. The results suggest that the presence of structural heterogeneity introduces a new bias into the movement, which plays an important role in complex environments where the nematode movement may be obstructed by soil particles. References Tarquis, A.M., Morato, M. C., Castellanos M.T., Perdigones A. 2009. Comparison of Structure Function and Detrended Fluctuation Analysis of Wind Time Series, Riv. Nuevo Cimento, in press. Gao, J., Cao, Y., Tung, W.-W., Hu J., 2007. Multiscale Analysis of Complex Times Series. Eds. John Wiley & Sons.

  10. Measuring efficiency of international crude oil markets: A multifractality approach

    Science.gov (United States)

    Niere, H. M.

    2015-01-01

    The three major international crude oil markets are treated as complex systems and their multifractal properties are explored. The study covers daily prices of Brent crude, OPEC reference basket and West Texas Intermediate (WTI) crude from January 2, 2003 to January 2, 2014. A multifractal detrended fluctuation analysis (MFDFA) is employed to extract the generalized Hurst exponents in each of the time series. The generalized Hurst exponent is used to measure the degree of multifractality which in turn is used to quantify the efficiency of the three international crude oil markets. To identify whether the source of multifractality is long-range correlations or broad fat-tail distributions, shuffled data and surrogated data corresponding to each of the time series are generated. Shuffled data are obtained by randomizing the order of the price returns data. This will destroy any long-range correlation of the time series. Surrogated data is produced using the Fourier-Detrended Fluctuation Analysis (F-DFA). This is done by randomizing the phases of the price returns data in Fourier space. This will normalize the distribution of the time series. The study found that for the three crude oil markets, there is a strong dependence of the generalized Hurst exponents with respect to the order of fluctuations. This shows that the daily price time series of the markets under study have signs of multifractality. Using the degree of multifractality as a measure of efficiency, the results show that WTI is the most efficient while OPEC is the least efficient market. This implies that OPEC has the highest likelihood to be manipulated among the three markets. This reflects the fact that Brent and WTI is a very competitive market hence, it has a higher level of complexity compared against OPEC, which has a large monopoly power. Comparing with shuffled data and surrogated data, the findings suggest that for all the three crude oil markets, the multifractality is mainly due to long

  11. Soil porosity correlation and its influence in percolation dynamics

    Science.gov (United States)

    Rodriguez, Alfredo; Capa-Morocho, Mirian; Ruis-Ramos, Margarita; Tarquis, Ana M.

    2016-04-01

    The prediction of percolation in natural soils is relevant for modeling root growth and optimizing infiltration of water and nutrients. Also, it would improve our understanding on how pollutants as pesticides, and virus and bacteria (Darnault et al., 2003) reach significant depths without being filtered out by the soil matrix (Beven and Germann, 2013). Random walk algorithms have been used successfully to date to characterize the dynamical characteristics of disordered media. This approach has been used here to describe how soil at different bulk densities and with different threshold values applied to the 3D gray images influences the structure of the pore network and their implications on particle flow and distribution (Ruiz-Ramos et al., 2009). In order to do so first we applied several threshold values to each image analyzed and characterized them through Hurst exponents, then we computed random walks algorithms to calculate distances reached by the particles and speed of those particles. At the same time, 3D structures with a Hurst exponent of ca 0.5 and with different porosities were constructed and the same random walks simulations were replicated over these generated structures. We have found a relationship between Hurst exponents and the speed distribution of the particles reaching percolation of the total soil depth. REFERENCES Darnault, C.J. G., P. Garnier, Y.J. Kim, K.L. Oveson, T.S. Steenhuis, J.Y. Parlange, M. Jenkins, W.C. Ghiorse, and P. Baveye (2003), Preferential transport of Cryptosporidium parvum oocysts in variably saturated subsurface environments, Water Environ. Res., 75, 113-120. Beven, Keith and Germann, Peter. 2013. Macropores and water flow in soils revisited. Water Resources Research, 49(6), 3071-3092. DOI: 10.1002/wrcr.20156. Ruiz-Ramos, M., D. del Valle, D. Grinev, and A.M. Tarquis. 2009. Soil hydraulic behaviour at different bulk densities. Geophysical Research Abstracts, 11, EGU2009-6234.

  12. Nine Loci for Ocular Axial Length Identified through Genome-wide Association Studies, Including Shared Loci with Refractive Error

    Science.gov (United States)

    Cheng, Ching-Yu; Schache, Maria; Ikram, M. Kamran; Young, Terri L.; Guggenheim, Jeremy A.; Vitart, Veronique; MacGregor, Stuart; Verhoeven, Virginie J.M.; Barathi, Veluchamy A.; Liao, Jiemin; Hysi, Pirro G.; Bailey-Wilson, Joan E.; St. Pourcain, Beate; Kemp, John P.; McMahon, George; Timpson, Nicholas J.; Evans, David M.; Montgomery, Grant W.; Mishra, Aniket; Wang, Ya Xing; Wang, Jie Jin; Rochtchina, Elena; Polasek, Ozren; Wright, Alan F.; Amin, Najaf; van Leeuwen, Elisabeth M.; Wilson, James F.; Pennell, Craig E.; van Duijn, Cornelia M.; de Jong, Paulus T.V.M.; Vingerling, Johannes R.; Zhou, Xin; Chen, Peng; Li, Ruoying; Tay, Wan-Ting; Zheng, Yingfeng; Chew, Merwyn; Rahi, Jugnoo S.; Hysi, Pirro G.; Yoshimura, Nagahisa; Yamashiro, Kenji; Miyake, Masahiro; Delcourt, Cécile; Maubaret, Cecilia; Williams, Cathy; Guggenheim, Jeremy A.; Northstone, Kate; Ring, Susan M.; Davey-Smith, George; Craig, Jamie E.; Burdon, Kathryn P.; Fogarty, Rhys D.; Iyengar, Sudha K.; Igo, Robert P.; Chew, Emily; Janmahasathian, Sarayut; Iyengar, Sudha K.; Igo, Robert P.; Chew, Emily; Janmahasathian, Sarayut; Stambolian, Dwight; Wilson, Joan E. Bailey; MacGregor, Stuart; Lu, Yi; Jonas, Jost B.; Xu, Liang; Saw, Seang-Mei; Baird, Paul N.; Rochtchina, Elena; Mitchell, Paul; Wang, Jie Jin; Jonas, Jost B.; Nangia, Vinay; Hayward, Caroline; Wright, Alan F.; Vitart, Veronique; Polasek, Ozren; Campbell, Harry; Vitart, Veronique; Rudan, Igor; Vatavuk, Zoran; Vitart, Veronique; Paterson, Andrew D.; Hosseini, S. Mohsen; Iyengar, Sudha K.; Igo, Robert P.; Fondran, Jeremy R.; Young, Terri L.; Feng, Sheng; Verhoeven, Virginie J.M.; Klaver, Caroline C.; van Duijn, Cornelia M.; Metspalu, Andres; Haller, Toomas; Mihailov, Evelin; Pärssinen, Olavi; Wedenoja, Juho; Wilson, Joan E. Bailey; Wojciechowski, Robert; Baird, Paul N.; Schache, Maria; Pfeiffer, Norbert; Höhn, René; Pang, Chi Pui; Chen, Peng; Meitinger, Thomas; Oexle, Konrad; Wegner, Aharon; Yoshimura, Nagahisa; Yamashiro, Kenji; Miyake, Masahiro; Pärssinen, Olavi; Yip, Shea Ping; Ho, Daniel W.H.; Pirastu, Mario; Murgia, Federico; Portas, Laura; Biino, Genevra; Wilson, James F.; Fleck, Brian; Vitart, Veronique; Stambolian, Dwight; Wilson, Joan E. Bailey; Hewitt, Alex W.; Ang, Wei; Verhoeven, Virginie J.M.; Klaver, Caroline C.; van Duijn, Cornelia M.; Saw, Seang-Mei; Wong, Tien-Yin; Teo, Yik-Ying; Fan, Qiao; Cheng, Ching-Yu; Zhou, Xin; Ikram, M. Kamran; Saw, Seang-Mei; Teo, Yik-Ying; Fan, Qiao; Cheng, Ching-Yu; Zhou, Xin; Ikram, M. Kamran; Saw, Seang-Mei; Wong, Tien-Yin; Teo, Yik-Ying; Fan, Qiao; Cheng, Ching-Yu; Zhou, Xin; Ikram, M. Kamran; Saw, Seang-Mei; Wong, Tien-Yin; Teo, Yik-Ying; Fan, Qiao; Cheng, Ching-Yu; Zhou, Xin; Ikram, M. Kamran; Saw, Seang-Mei; Tai, E-Shyong; Teo, Yik-Ying; Fan, Qiao; Cheng, Ching-Yu; Zhou, Xin; Ikram, M. Kamran; Saw, Seang-Mei; Teo, Yik-Ying; Fan, Qiao; Cheng, Ching-Yu; Zhou, Xin; Ikram, M. Kamran; Mackey, David A.; MacGregor, Stuart; Hammond, Christopher J.; Hysi, Pirro G.; Deangelis, Margaret M.; Morrison, Margaux; Zhou, Xiangtian; Chen, Wei; Paterson, Andrew D.; Hosseini, S. Mohsen; Mizuki, Nobuhisa; Meguro, Akira; Lehtimäki, Terho; Mäkelä, Kari-Matti; Raitakari, Olli; Kähönen, Mika; Burdon, Kathryn P.; Craig, Jamie E.; Iyengar, Sudha K.; Igo, Robert P.; Lass, Jonathan H.; Reinhart, William; Belin, Michael W.; Schultze, Robert L.; Morason, Todd; Sugar, Alan; Mian, Shahzad; Soong, Hunson Kaz; Colby, Kathryn; Jurkunas, Ula; Yee, Richard; Vital, Mark; Alfonso, Eduardo; Karp, Carol; Lee, Yunhee; Yoo, Sonia; Hammersmith, Kristin; Cohen, Elisabeth; Laibson, Peter; Rapuano, Christopher; Ayres, Brandon; Croasdale, Christopher; Caudill, James; Patel, Sanjay; Baratz, Keith; Bourne, William; Maguire, Leo; Sugar, Joel; Tu, Elmer; Djalilian, Ali; Mootha, Vinod; McCulley, James; Bowman, Wayne; Cavanaugh, H. Dwight; Verity, Steven; Verdier, David; Renucci, Ann; Oliva, Matt; Rotkis, Walter; Hardten, David R.; Fahmy, Ahmad; Brown, Marlene; Reeves, Sherman; Davis, Elizabeth A.; Lindstrom, Richard; Hauswirth, Scott; Hamilton, Stephen; Lee, W. Barry; Price, Francis; Price, Marianne; Kelly, Kathleen; Peters, Faye; Shaughnessy, Michael; Steinemann, Thomas; Dupps, B.J.; Meisler, David M.; Mifflin, Mark; Olson, Randal; Aldave, Anthony; Holland, Gary; Mondino, Bartly J.; Rosenwasser, George; Gorovoy, Mark; Dunn, Steven P.; Heidemann, David G.; Terry, Mark; Shamie, Neda; Rosenfeld, Steven I.; Suedekum, Brandon; Hwang, David; Stone, Donald; Chodosh, James; Galentine, Paul G.; Bardenstein, David; Goddard, Katrina; Chin, Hemin; Mannis, Mark; Varma, Rohit; Borecki, Ingrid; Chew, Emily Y.; Haller, Toomas; Mihailov, Evelin; Metspalu, Andres; Wedenoja, Juho; Simpson, Claire L.; Wojciechowski, Robert; Höhn, René; Mirshahi, Alireza; Zeller, Tanja; Pfeiffer, Norbert; Lackner, Karl J.; Donnelly, Peter; Barroso, Ines; Blackwell, Jenefer M.; Bramon, Elvira; Brown, Matthew A.; Casas, Juan P.; Corvin, Aiden; Deloukas, Panos; Duncanson, Audrey; Jankowski, Janusz; Markus, Hugh S.; Mathew, Christopher G.; Palmer, Colin N.A.; Plomin, Robert; Rautanen, Anna; Sawcer, Stephen J.; Trembath, Richard C.; Viswanathan, Ananth C.; Wood, Nicholas W.; Spencer, Chris C.A.; Band, Gavin; Bellenguez, Céline; Freeman, Colin; Hellenthal, Garrett; Giannoulatou, Eleni; Pirinen, Matti; Pearson, Richard; Strange, Amy; Su, Zhan; Vukcevic, Damjan; Donnelly, Peter; Langford, Cordelia; Hunt, Sarah E.; Edkins, Sarah; Gwilliam, Rhian; Blackburn, Hannah; Bumpstead, Suzannah J.; Dronov, Serge; Gillman, Matthew; Gray, Emma; Hammond, Naomi; Jayakumar, Alagurevathi; McCann, Owen T.; Liddle, Jennifer; Potter, Simon C.; Ravindrarajah, Radhi; Ricketts, Michelle; Waller, Matthew; Weston, Paul; Widaa, Sara; Whittaker, Pamela; Barroso, Ines; Deloukas, Panos; Mathew, Christopher G.; Blackwell, Jenefer M.; Brown, Matthew A.; Corvin, Aiden; Spencer, Chris C.A.; Bettecken, Thomas; Meitinger, Thomas; Oexle, Konrad; Pirastu, Mario; Portas, Laura; Nag, Abhishek; Williams, Katie M.; Yonova-Doing, Ekaterina; Klein, Ronald; Klein, Barbara E.; Hosseini, S. Mohsen; Paterson, Andrew D.; Genuth, S.; Nathan, D.M.; Zinman, B.; Crofford, O.; Crandall, J.; Reid, M.; Brown-Friday, J.; Engel, S.; Sheindlin, J.; Martinez, H.; Shamoon, H.; Engel, H.; Phillips, M.; Gubitosi-Klug, R.; Mayer, L.; Pendegast, S.; Zegarra, H.; Miller, D.; Singerman, L.; Smith-Brewer, S.; Novak, M.; Quin, J.; Dahms, W.; Genuth, Saul; Palmert, M.; Brillon, D.; Lackaye, M.E.; Kiss, S.; Chan, R.; Reppucci, V.; Lee, T.; Heinemann, M.; Whitehouse, F.; Kruger, D.; Jones, J.K.; McLellan, M.; Carey, J.D.; Angus, E.; Thomas, A.; Galprin, A.; Bergenstal, R.; Johnson, M.; Spencer, M.; Morgan, K.; Etzwiler, D.; Kendall, D.; Aiello, Lloyd Paul; Golden, E.; Jacobson, A.; Beaser, R.; Ganda, O.; Hamdy, O.; Wolpert, H.; Sharuk, G.; Arrigg, P.; Schlossman, D.; Rosenzwieg, J.; Rand, L.; Nathan, D.M.; Larkin, M.; Ong, M.; Godine, J.; Cagliero, E.; Lou, P.; Folino, K.; Fritz, S.; Crowell, S.; Hansen, K.; Gauthier-Kelly, C.; Service, J.; Ziegler, G.; Luttrell, L.; Caulder, S.; Lopes-Virella, M.; Colwell, J.; Soule, J.; Fernandes, J.; Hermayer, K.; Kwon, S.; Brabham, M.; Blevins, A.; Parker, J.; Lee, D.; Patel, N.; Pittman, C.; Lindsey, P.; Bracey, M.; Lee, K.; Nutaitis, M.; Farr, A.; Elsing, S.; Thompson, T.; Selby, J.; Lyons, T.; Yacoub-Wasef, S.; Szpiech, M.; Wood, D.; Mayfield, R.; Molitch, M.; Schaefer, B.; Jampol, L.; Lyon, A.; Gill, M.; Strugula, Z.; Kaminski, L.; Mirza, R.; Simjanoski, E.; Ryan, D.; Kolterman, O.; Lorenzi, G.; Goldbaum, M.; Sivitz, W.; Bayless, M.; Counts, D.; Johnsonbaugh, S.; Hebdon, M.; Salemi, P.; Liss, R.; Donner, T.; Gordon, J.; Hemady, R.; Kowarski, A.; Ostrowski, D.; Steidl, S.; Jones, B.; Herman, W.H.; Martin, C.L.; Pop-Busui, R.; Sarma, A.; Albers, J.; Feldman, E.; Kim, K.; Elner, S.; Comer, G.; Gardner, T.; Hackel, R.; Prusak, R.; Goings, L.; Smith, A.; Gothrup, J.; Titus, P.; Lee, J.; Brandle, M.; Prosser, L.; Greene, D.A.; Stevens, M.J.; Vine, A.K.; Bantle, J.; Wimmergren, N.; Cochrane, A.; Olsen, T.; Steuer, E.; Rath, P.; Rogness, B.; Hainsworth, D.; Goldstein, D.; Hitt, S.; Giangiacomo, J.; Schade, D.S.; Canady, J.L.; Chapin, J.E.; Ketai, L.H.; Braunstein, C.S.; Bourne, P.A.; Schwartz, S.; Brucker, A.; Maschak-Carey, B.J.; Baker, L.; Orchard, T.; Silvers, N.; Ryan, C.; Songer, T.; Doft, B.; Olson, S.; Bergren, R.L.; Lobes, L.; Rath, P. Paczan; Becker, D.; Rubinstein, D.; Conrad, P.W.; Yalamanchi, S.; Drash, A.; Morrison, A.; Bernal, M.L.; Vaccaro-Kish, J.; Malone, J.; Pavan, P.R.; Grove, N.; Iyer, M.N.; Burrows, A.F.; Tanaka, E.A.; Gstalder, R.; Dagogo-Jack, S.; Wigley, C.; Ricks, H.; Kitabchi, A.; Murphy, M.B.; Moser, S.; Meyer, D.; Iannacone, A.; Chaum, E.; Yoser, S.; Bryer-Ash, M.; Schussler, S.; Lambeth, H.; Raskin, P.; Strowig, S.; Zinman, B.; Barnie, A.; Devenyi, R.; Mandelcorn, M.; Brent, M.; Rogers, S.; Gordon, A.; Palmer, J.; Catton, S.; Brunzell, J.; Wessells, H.; de Boer, I.H.; Hokanson, J.; Purnell, J.; Ginsberg, J.; Kinyoun, J.; Deeb, S.; Weiss, M.; Meekins, G.; Distad, J.; Van Ottingham, L.; Dupre, J.; Harth, J.; Nicolle, D.; Driscoll, M.; Mahon, J.; Canny, C.; May, M.; Lipps, J.; Agarwal, A.; Adkins, T.; Survant, L.; Pate, R.L.; Munn, G.E.; Lorenz, R.; Feman, S.; White, N.; Levandoski, L.; Boniuk, I.; Grand, G.; Thomas, M.; Joseph, D.D.; Blinder, K.; Shah, G.; Boniuk; Burgess; Santiago, J.; Tamborlane, W.; Gatcomb, P.; Stoessel, K.; Taylor, K.; Goldstein, J.; Novella, S.; Mojibian, H.; Cornfeld, D.; Lima, J.; Bluemke, D.; Turkbey, E.; van der Geest, R.J.; Liu, C.; Malayeri, A.; Jain, A.; Miao, C.; Chahal, H.; Jarboe, R.; Maynard, J.; Gubitosi-Klug, R.; Quin, J.; Gaston, P.; Palmert, M.; Trail, R.; Dahms, W.; Lachin, J.; Cleary, P.; Backlund, J.; Sun, W.; Braffett, B.; Klumpp, K.; Chan, K.; Diminick, L.; Rosenberg, D.; Petty, B.; Determan, A.; Kenny, D.; Rutledge, B.; Younes, Naji; Dews, L.; Hawkins, M.; Cowie, C.; Fradkin, J.; Siebert, C.; Eastman, R.; Danis, R.; Gangaputra, S.; Neill, S.; Davis, M.; Hubbard, L.; Wabers, H.; Burger, M.; Dingledine, J.; Gama, V.; Sussman, R.; Steffes, M.; Bucksa, J.; Nowicki, M.; Chavers, B.; O’Leary, D.; Polak, J.; Harrington, A.; Funk, L.; Crow, R.; Gloeb, B.; Thomas, S.; O’Donnell, C.; Soliman, E.; Zhang, Z.M.; Prineas, R.; Campbell, C.; Ryan, C.; Sandstrom, D.; Williams, T.; Geckle, M.; Cupelli, E.; Thoma, F.; Burzuk, B.; Woodfill, T.; Low, P.; Sommer, C.; Nickander, K.; Budoff, M.; Detrano, R.; Wong, N.; Fox, M.; Kim, L.; Oudiz, R.; Weir, G.; Espeland, M.; Manolio, T.; Rand, L.; Singer, D.; Stern, M.; Boulton, A.E.; Clark, C.; D’Agostino, R.; Lopes-Virella, M.; Garvey, W.T.; Lyons, T.J.; Jenkins, A.; Virella, G.; Jaffa, A.; Carter, Rickey; Lackland, D.; Brabham, M.; McGee, D.; Zheng, D.; Mayfield, R.K.; Boright, A.; Bull, S.; Sun, L.; Scherer, S.; Zinman, B.; Natarajan, R.; Miao, F.; Zhang, L.; Chen;, Z.; Nathan, D.M.; Makela, Kari-Matti; Lehtimaki, Terho; Kahonen, Mika; Raitakari, Olli; Yoshimura, Nagahisa; Matsuda, Fumihiko; Chen, Li Jia; Pang, Chi Pui; Yip, Shea Ping; Yap, Maurice K.H.; Meguro, Akira; Mizuki, Nobuhisa; Inoko, Hidetoshi; Foster, Paul J.; Zhao, Jing Hua; Vithana, Eranga; Tai, E-Shyong; Fan, Qiao; Xu, Liang; Campbell, Harry; Fleck, Brian; Rudan, Igor; Aung, Tin; Hofman, Albert; Uitterlinden, André G.; Bencic, Goran; Khor, Chiea-Chuen; Forward, Hannah; Pärssinen, Olavi; Mitchell, Paul; Rivadeneira, Fernando; Hewitt, Alex W.; Williams, Cathy; Oostra, Ben A.; Teo, Yik-Ying; Hammond, Christopher J.; Stambolian, Dwight; Mackey, David A.; Klaver, Caroline C.W.; Wong, Tien-Yin; Saw, Seang-Mei; Baird, Paul N.

    2013-01-01

    Refractive errors are common eye disorders of public health importance worldwide. Ocular axial length (AL) is the major determinant of refraction and thus of myopia and hyperopia. We conducted a meta-analysis of genome-wide association studies for AL, combining 12,531 Europeans and 8,216 Asians. We identified eight genome-wide significant loci for AL (RSPO1, C3orf26, LAMA2, GJD2, ZNRF3, CD55, MIP, and ALPPL2) and confirmed one previously reported AL locus (ZC3H11B). Of the nine loci, five (LAMA2, GJD2, CD55, ALPPL2, and ZC3H11B) were associated with refraction in 18 independent cohorts (n = 23,591). Differential gene expression was observed for these loci in minus-lens-induced myopia mouse experiments and human ocular tissues. Two of the AL genes, RSPO1 and ZNRF3, are involved in Wnt signaling, a pathway playing a major role in the regulation of eyeball size. This study provides evidence of shared genes between AL and refraction, but importantly also suggests that these traits may have unique pathways. PMID:24144296

  13. Testing galaxy formation models with galaxy stellar mass functions

    CERN Document Server

    Lim, Seunghwan; Lan, Ting-Wen; Ménard, Brice

    2016-01-01

    We compare predictions of a number of empirical models and numerical simulations of galaxy formation to the conditional stellar mass functions (CSMF) of galaxies in groups of different masses obtained recently by Lan et al. to test how well different models accommodate the data. Among all the models considered, only the model of Lu et al. can match the observational data; all other models fail to reproduce the faint-end upturn seen in the observation. The CSMFs are used to update the halo-based empirical model of Lu et al., and the model parameters obtained are very similar to those inferred by Lu et al. from a completely different set of observational constraints. The observational data clearly prefer a model in which star formation in low-mass halos changes behavior at a characteristic redshift $z_c \\sim 2$. There is also tentative evidence that this characteristic redshift depends on environments, becoming $z_c \\sim 4$ in regions that eventually evolve into rich clusters of galaxies. The constrained model ...

  14. Preparation of thermo-responsive graft copolymer by using a novel macro-RAFT agent and its application for drug delivery.

    Science.gov (United States)

    Song, Cunfeng; Yu, Shirong; Liu, Cheng; Deng, Yuanming; Xu, Yiting; Chen, Xiaoling; Dai, Lizong

    2016-05-01

    A methodology to prepare thermo-responsive graft copolymer by using a novel macro-RAFT agent was proposed. The macro-RAFT agent with pendant dithioester (ZC(S)SR) was facilely prepared via the combination of RAFT polymerization and esterification reaction. By means of ZC(S)SR-initiated RAFT polymerization, the thermo-responsive graft copolymer consisting of poly(methyl methacrylate-co-hydroxylethyl methacrylate) (P(MMA-co-HEMA)) backbone and hydrophilic poly(N-isopropylacrylamide) (PNIPAAm) side chains was constructed through the "grafting from" approach. The chemical compositions and molecular weight distributions of the synthesized polymers were respectively characterized by (1)H nuclear magnetic resonance ((1)H NMR) and gel permeation chromatography (GPC). Self-assembly behavior of the amphiphilic graft copolymers (P(MMA-co-HEMA)-g-PNIPAAm) was studied by transmission electron microscopy (TEM), dynamic light scattering (DLS) and spectrofluorimeter. The critical micelle concentration (CMC) value was 0.052 mg mL(-1). These micelles have thermo-responsibility and a low critical solution temperature (LCST) of 33.5°C. Further investigation indicated that the guest molecule release property of these micelles, which can be well described by a first-order kinetic model, was significantly affected by temperature. Besides, the micelles exhibited excellent biocompatibility and cellular uptake property. Hence, these micelles are considered to have potential application in controlled drug delivery.

  15. Failure Analysis for Manipulator on Mobile SHARS Conditioning Equipment%移动式高活度废放射源整备装置用机械手故障分析

    Institute of Scientific and Technical Information of China (English)

    高超; 安鸿翔

    2014-01-01

    Manipulator is a key part of mobile spent high active radioactive source (SHARS ) conditioning equipment .Its stability will affect the successful operation of the conditioning equipment .Based on the failure analysis of ZC205B master slave hinged manipulator in cold test ,this paper is intended to provide the identifi-cation and correction of the problems existing in the process of its operation ,for the purpose of providing guid-ance on the future thermal test .%机械手是移动式高活度废放射源整备装置的关键设备,其工作的可靠性直接决定了移动式高活度废放射源整备装置能否顺利完成整备作业。本文通过对ZC205-B主从式关节机械手在冷试验中的故障分析,发现并纠正试验过程中机械手自身及操作中存在的问题,为热试验提供指导。

  16. Hidden-beauty charged tetraquarks and heavy quark spin conservation

    Science.gov (United States)

    Ali, A.; Maiani, L.; Polosa, A. D.; Riquer, V.

    2015-01-01

    Assuming the dominance of the spin-spin interaction in a diquark, we point out that the mass difference in the beauty sector M (Zb')±-M (Zb)± scales with quark masses as expected in QCD, with respect to the corresponding mass difference M (Zc')±-M (Zc)± . Notably, we show that the decays ϒ (10890 )→ϒ (n S )π+π- and ϒ (10890 )→(hb(1 P ),hb(2 P ))π+π- are compatible with heavy quark spin conservation if the contributions of Zb,Zb' intermediate states are taken into account, ϒ (10890 ) being either a ϒ (5 S ) or the beauty analog of Yc(4260 ). Belle results on these decays support the quark spin wave function of the Z states as tetraquarks. We also consider the role of light quark spin nonconservaton in Zb,Zb' decays into B B* and B*B*. Indications of possible signatures of the still missing Xb resonance are proposed.

  17. Testing galaxy formation models with galaxy stellar mass functions

    Science.gov (United States)

    Lim, S. H.; Mo, H. J.; Lan, Ting-Wen; Ménard, Brice

    2016-10-01

    We compare predictions of a number of empirical models and numerical simulations of galaxy formation to the conditional stellar mass functions (CSMF) of galaxies in groups of different masses obtained recently by Lan et al. to test how well different models accommodate the data. The observational data clearly prefer a model in which star formation in low-mass halos changes behavior at a characteristic redshift zc ˜ 2. There is also tentative evidence that this characteristic redshift depends on environment, becoming zc ˜ 4 in regions that eventually evolve into rich clusters of galaxies. The constrained model is used to understand how galaxies form and evolve in dark matter halos, and to make predictions for other statistical properties of the galaxy population, such as the stellar mass functions of galaxies at high z, the star formation and stellar mass assembly histories in dark matter halos. A comparison of our model predictions with those of other empirical models shows that different models can make vastly different predictions, even though all of them are tuned to match the observed stellar mass functions of galaxies.

  18. Hidden charm octet tetraquarks from a diquark-antidiquark model

    CERN Document Server

    Zhu, Ruilin

    2016-01-01

    Four exotic charmonium-like states, i.e. $X(4140)$, $X(4274)$, $X(4500)$, and $X(4700)$, have been observed very recently by LHCb Collaboration in the decay process $B^+\\to J/\\psi \\phi K^+$ using the 3${\\rm fb}^{-1}$ data of $p\\bar p$ collision at $\\sqrt s= 7$ and $8$ TeV. In this paper, we investigate systematically the hidden charm tetraquark states. The hidden charm tetraquarks form an octet and a singlet representation according to flavor $SU(3)$ symmetry. Based on a diquark-antidiquark model, the hidden charm tetraquarks spectra are given. The previous XYZ exotic states altogether with the newly ones $X(4140)$, $X(4274)$, $X(4500)$, and $X(4700)$, can be well classified into certain representations. The spin-parities and masses of the XYZ are predicted, most of which are in agreement with the data. We particularly find that $Z_c(4430)$ can be treated as the first radial excitation of $Z_c(3900)$, while the $Y(1^{--})$ states can be obtained by the first orbital excitation of $X/Z$. Besides, we calculate ...

  19. Testing galaxy formation models with galaxy stellar mass functions

    Science.gov (United States)

    Lim, S. H.; Mo, H. J.; Lan, T.-W.; Ménard, B.

    2017-01-01

    We compare predictions of a number of empirical models and numerical simulations of galaxy formation to the conditional stellar mass functions of galaxies in groups of different masses obtained recently by Lan et al. to test how well different models accommodate the data. The observational data clearly prefer a model in which star formation in low-mass haloes changes behaviour at a characteristic redshift zc ˜ 2. There is also tentative evidence that this characteristic redshift depends on environment, becoming zc ˜ 4 in regions that eventually evolve into rich clusters of galaxies. The constrained model is used to understand how galaxies form and evolve in dark matter haloes, and to make predictions for other statistical properties of the galaxy population, such as the stellar mass functions of galaxies at high z, the star formation, and stellar mass assembly histories in dark matter haloes. A comparison of our model predictions with those of other empirical models shows that different models can make vastly different predictions, even though all of them are tuned to match the observed stellar mass functions of galaxies.

  20. X-ray absorption fine structure analysis of the local environment of zinc in dentine treated with zinc compounds.

    Science.gov (United States)

    Takatsuka, Tsutomu; Hirano, Junko; Matsumoto, Hitoshi; Honma, Tetsuo

    2005-04-01

    It has been reported that zinc oxide (ZnO) inhibits dentine demineralization. By using the X-ray absorption fine structure (XAFS) technique, our aims in this study were to provide information about the local environment of zinc atoms in dentine that had been treated with zinc compounds. We measured the Zn K-edge X-ray absorption near-edge structure (XANES) and the extended X-ray absorption fine structure (EXAFS) of dentine specimens treated with zinc chloride or ZnO. In XAFS analyses, the spectra of dentine specimens treated with ZnO (D-ZO) or with zinc chloride (D-ZC) were similar and obviously different from the reference ZnO spectrum. This suggests that most of the zinc atoms detected in D-ZO are not derived from particles of ZnO. The spectra of D-ZO and D-ZC were similar to the spectrum of the synthetic, zinc-containing hydroxyapatite, but were not similar to that of zinc in ZnCl2-treated collagen. The results of this study suggest that most of the zinc atoms detected were attached to hydroxyapatite and not to collagen.

  1. Nine loci for ocular axial length identified through genome-wide association studies, including shared loci with refractive error.

    Science.gov (United States)

    Cheng, Ching-Yu; Schache, Maria; Ikram, M Kamran; Young, Terri L; Guggenheim, Jeremy A; Vitart, Veronique; MacGregor, Stuart; Verhoeven, Virginie J M; Barathi, Veluchamy A; Liao, Jiemin; Hysi, Pirro G; Bailey-Wilson, Joan E; St Pourcain, Beate; Kemp, John P; McMahon, George; Timpson, Nicholas J; Evans, David M; Montgomery, Grant W; Mishra, Aniket; Wang, Ya Xing; Wang, Jie Jin; Rochtchina, Elena; Polasek, Ozren; Wright, Alan F; Amin, Najaf; van Leeuwen, Elisabeth M; Wilson, James F; Pennell, Craig E; van Duijn, Cornelia M; de Jong, Paulus T V M; Vingerling, Johannes R; Zhou, Xin; Chen, Peng; Li, Ruoying; Tay, Wan-Ting; Zheng, Yingfeng; Chew, Merwyn; Burdon, Kathryn P; Craig, Jamie E; Iyengar, Sudha K; Igo, Robert P; Lass, Jonathan H; Chew, Emily Y; Haller, Toomas; Mihailov, Evelin; Metspalu, Andres; Wedenoja, Juho; Simpson, Claire L; Wojciechowski, Robert; Höhn, René; Mirshahi, Alireza; Zeller, Tanja; Pfeiffer, Norbert; Lackner, Karl J; Bettecken, Thomas; Meitinger, Thomas; Oexle, Konrad; Pirastu, Mario; Portas, Laura; Nag, Abhishek; Williams, Katie M; Yonova-Doing, Ekaterina; Klein, Ronald; Klein, Barbara E; Hosseini, S Mohsen; Paterson, Andrew D; Makela, Kari-Matti; Lehtimaki, Terho; Kahonen, Mika; Raitakari, Olli; Yoshimura, Nagahisa; Matsuda, Fumihiko; Chen, Li Jia; Pang, Chi Pui; Yip, Shea Ping; Yap, Maurice K H; Meguro, Akira; Mizuki, Nobuhisa; Inoko, Hidetoshi; Foster, Paul J; Zhao, Jing Hua; Vithana, Eranga; Tai, E-Shyong; Fan, Qiao; Xu, Liang; Campbell, Harry; Fleck, Brian; Rudan, Igor; Aung, Tin; Hofman, Albert; Uitterlinden, André G; Bencic, Goran; Khor, Chiea-Chuen; Forward, Hannah; Pärssinen, Olavi; Mitchell, Paul; Rivadeneira, Fernando; Hewitt, Alex W; Williams, Cathy; Oostra, Ben A; Teo, Yik-Ying; Hammond, Christopher J; Stambolian, Dwight; Mackey, David A; Klaver, Caroline C W; Wong, Tien-Yin; Saw, Seang-Mei; Baird, Paul N

    2013-08-08

    Refractive errors are common eye disorders of public health importance worldwide. Ocular axial length (AL) is the major determinant of refraction and thus of myopia and hyperopia. We conducted a meta-analysis of genome-wide association studies for AL, combining 12,531 Europeans and 8,216 Asians. We identified eight genome-wide significant loci for AL (RSPO1, C3orf26, LAMA2, GJD2, ZNRF3, CD55, MIP, and ALPPL2) and confirmed one previously reported AL locus (ZC3H11B). Of the nine loci, five (LAMA2, GJD2, CD55, ALPPL2, and ZC3H11B) were associated with refraction in 18 independent cohorts (n = 23,591). Differential gene expression was observed for these loci in minus-lens-induced myopia mouse experiments and human ocular tissues. Two of the AL genes, RSPO1 and ZNRF3, are involved in Wnt signaling, a pathway playing a major role in the regulation of eyeball size. This study provides evidence of shared genes between AL and refraction, but importantly also suggests that these traits may have unique pathways. Copyright © 2013 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.

  2. Right = Left ? The concepts of “right-left” and brain asymmetrySağ = Sol ? “Sağ-sol” kavramları ve beyin asimetrisi

    Directory of Open Access Journals (Sweden)

    Evrim Gülbetekin

    2015-11-01

    Full Text Available Although “right” and “left” are neutral words those describe directions, they have some positive and negative meanings in cultural contexts. Attributing positive meanings for right and negative meanings for left is observed in different cultures, languages and belief systems including Turkish culture. In the presented study, Turkish words, sayings and phrasses including right, left and right-left together were examined according to their meanings (positive, negative, neutral by referencing Turkish Language Instituion. It was observed that the word “right” had 15 positive meanings and the word “left” had no positive meanings.  On the other hand, it was found that the word “right” had no negative meanings and “left” had four negative meanings and there were eight negative meanings including the words “left” and “right” together.  The predisposition of attributing positive/negative meanings to right and left is discussed in a neuroscientific perspective and it is assessed in the context of two hemispheric specializations in the brain: 1. Motor asymmetries and handedness 2. Emotions and Valence Hypothesis.  Generally, attributing positive meanings for right and negative meanings for left seems to be related to human physiological system, structural and functional brain asymmetries and dependently human cognition and comprehension.   Özet Sağ ve sol kavramları ilk anlamları itibariyle yön belirten nötr sözcükler olmasına rağmen kültürel bağlamda bu sözcüklerin olumlu ve olumsuz anlamlara sahip olduğu görülmektedir. Sağa olumlu, sola olumsuz anlam atfetme Türk kültürü de dahil olmak üzere farklı kültürlerde, dillerde ve inanç sistemleri içerisinde gözlenmektedir. Sunulan makalede Türk Dil Kurumu referans alınarak sağ, sol ve sağ ile solun birlikte kullanıldığı sözcük, birleşik sözcük, deyim ve atasözleri içerdikleri olumlu, olumsuz ve nötr anlamlara göre grupland

  3. Self-consistent triaxial de Zeeuw-Carollo Models

    CERN Document Server

    Thakur, Parijat; Das, Mousumi; Chakraborty, D K; Ann, H B

    2007-01-01

    We use the usual method of Schwarzschild to construct self-consistent solutions for the triaxial de Zeeuw & Carollo (1996) models with central density cusps. ZC96 models are triaxial generalisations of spherical $\\gamma$-models of Dehnen whose densities vary as $r^{-\\gamma}$ near the center and $r^{-4}$ at large radii and hence, possess a central density core for $\\gamma=0$ and cusps for $\\gamma > 0$. We consider four triaxial models from ZC96, two prolate triaxials: $(p, q) = (0.65, 0.60)$ with $\\gamma = 1.0$ and 1.5, and two oblate triaxials: $(p, q) = (0.95, 0.60)$ with $\\gamma = 1.0$ and 1.5. We compute 4500 orbits in each model for time periods of $10^{5} T_{D}$. We find that a large fraction of the orbits in each model are stochastic by means of their nonzero Liapunov exponents. The stochastic orbits in each model can sustain regular shapes for $\\sim 10^{3} T_{D}$ or longer, which suggests that they diffuse slowly through their allowed phase-space. Except for the oblate triaxial models with $\\gamma ...

  4. Effects of two low phytic acid mutations on seed quality and nutritional traits in soybean (Glycine max L. Merr).

    Science.gov (United States)

    Yuan, Feng-Jie; Zhu, Dan-Hua; Deng, Bo; Fu, Xu-Jun; Dong, De-Kun; Zhu, Shen-Long; Li, Bai-Quan; Shu, Qing-Yao

    2009-05-13

    Reduction of phytic acid in soybean seeds has the potential to improve the nutritional value of soybean meal and lessen phosphorus pollution in large scale animal farming. The objective of this study was to assess the effect of two new low phytic acid (LPA) mutations on seed quality and nutritional traits. Multilocation/season comparative analyses showed that the two mutations did not affect the concentration of crude protein, any of the individual amino acids, crude oil, and individual saturated fatty acids. Among other traits, Gm-lpa-TW75-1 had consistently higher sucrose contents (+47.4-86.1%) and lower raffinose contents (-74.2 to -84.3%) than those of wild type (WT) parent Taiwan 75; Gm-lpa-ZC-2 had higher total isoflavone contents (3038.8-4305.4 microg/g) than its parent Zhechun # 3 (1583.6-2644.9 microg/g) in all environments. Further tests of homozygous F(3) progenies of the cross Gm-lpa-ZC-2 x Wuxing # 4 (WT variety) showed that LPA lines had a mean content of total isoflavone significantly higher than WT lines. This study demonstrated that two LPA mutant genes have no negative effects on seed quality and nutritional traits; they instead have the potential to improve a few other properties. Therefore, these two mutant genes are valuable genetic resources for breeding high quality soybean varieties.

  5. Design and Analysis of an Asynchronous Zero Collision MAC Protocol

    CERN Document Server

    Lee, Jiwoong

    2008-01-01

    This paper proposes and analyzes a distributed MAC protocol that achieves zero collision with no control message exchange nor synchronization. ZC (ZeroCollision) is neither reservation-based nor dynamic TDMA; the protocol supports variable-length packets and does not lose efficiency when some of the stations do not transmit. At the same time, ZC is not a CSMA; in its steady state, it is completely collision-free. The stations transmit repeatedly in a round-robin order once the convergence state is reached. If some stations skip their turn, their transmissions are replaced by idle $20 \\mu$-second mini-slots that enable the other stations to keep track of their order. Because of its short medium access delay and its efficiency, the protocol supports both real-time and elastic applications. The protocol allows for nodes leaving and joining the network; it can allocate more throughput to specific nodes (such as an access point). The protocol is robust against carrier sensing errors or clock drift. While collision...

  6. Zinco e cromo na cicatrização de feridas em ratos normais e diabéticos The effect of zinc and chromium on wound healing in normal and diabetic rats

    Directory of Open Access Journals (Sweden)

    Sandra Pedroso de Moraes

    2000-12-01

    Full Text Available O retardo da cicatrização de feridas em pacientes diabéticos eleva os custos hospitalares e a morbidade dos procedimentos operatórios. O objetivo deste trabalho é avaliar a influência da suplementação dietética de óxido de zinco e cromo (ZC na reparação tecidual de feridas cutâneas. Foram estudados 69 ratos Wistar, pesando entre 200-270 gramas, separados em cinco grupos (G. Na primeira semana do experimento induziu-se diabetes com streptozotocin em 53 animais (GIII, GIV, GV. A partir do 8º dia os ratos normais (GI, GII e os diabéticos receberam, além de ração e água: GI, nenhum tratamento (NT; GII, ZC adicionados à água; GIII, NT; GIV, insulina; GV, ZC e insulina. No 15º dia foi retirado fragmento elíptico de pele e subcutâneo do dorso dos animais. Nos 15º, 22º, 29º e 36º dias, as feridas operatórias foram fotografadas. Essas fotografias foram transferidas para computador, onde foram calculadas as suas áreas. Os valores obtidos foram submetidos à análise estatística. No 22º dia da avaliação, não houve diferença significante (NS na redução das áreas das feridas operatórias entre os grupos. Nas datas seguintes, os ratos diabéticos não tratados (GIII também não apresentaram diferença significante na redução das áreas das feridas operatórias (RA em relação aos normais (GI. Mas os tratados com zinco e cromo e com insulina (GII, GIV e GV apresentaram RA significativamente maior do que os do GIII. O GV apresentou maior RA do que o GIV, porém NS. Conclui-se que o tratamento de ratos diabéticos com insulina e a suplementação dietética de ZC favorecem a cicatrização de feridas cutâneas.The delay in tissue repair of cutaneous wounds in diabetic patients increase hospital costs and morbidity in surgical procedures. The purpose of this study is to assess the influence of zinc oxide and chromium as diet supplements (ZC in tissue repair of cutaneous wounds. This study was carried out in 69 Wistar

  7. Coulomb gauge model for hidden charm tetraquarks

    Science.gov (United States)

    Xie, W.; Mo, L. Q.; Wang, Ping; Cotanch, Stephen R.

    2013-08-01

    The spectrum of tetraquark states with hidden charm is studied within an effective Coulomb gauge Hamiltonian approach. Of the four independent color schemes, two are investigated, the (qcbar)1(cqbar)1 singlet-singlet (molecule) and the (qc)3(qbarcbar)3 triplet-triplet (diquark), for selected JPC states using a variational method. The predicted masses of triplet-triplet tetraquarks are roughly a GeV heavier than the singlet-singlet states. There is also an interesting flavor dependence with (qqbar)1 (ccbar1) states about half a GeV lighter than (qcbar)1(qbarc)1. The lightest 1++ and 1-- predictions are in agreement with the observed X (3872) and Y (4008) masses suggesting they are molecules with ωJ / ψ and ηhc, rather than D*Dbar* and DDbar, type structure, respectively. Similarly, the lightest isovector 1++ molecule, having a ρJ / ψ flavor composition, has mass near the recently observed charged Zc (3900) value. These flavor configurations are consistent with observed X, Y and Zc decays to ππJ / ψ.

  8. Development of the Digital Engineering Laboratory Computer Network: Host-to-Node/Host-to-Host Protocols.

    Science.gov (United States)

    1981-12-01

    P2ZC~ 04) E- U ’ - aKK M2 z~-44 E-4 (2 ’ 0KK E- 4- 0-! (2 Ei/I42~2- E-Z E~-4 E-4 ’ lz’ z Ei- %~2..0. .- z 0.1.O 4 04’ 0 (z2XO Z 4I’ ’K’ (2 E.(2U~ i >~’l...go MOO WOOO CQ wt4c qcoCOCOwN m En w N tD co U2WN mOCM W N cc IE-~C Z l E4Z~C Z EM H ZZ E- Z Z I E 4 m E-i C z z Z VC ZCUU Q U U U)L V U U) U U UU Z Z...8217’ 0- ra2/ a4 W4’i 44s 00 f-4 M Ef -4L E4 >4 4 ic4𔃾 Z-4C 4 a E-’>z -l u 49 4 14 4 ~ EZIMIU 4 ad w a c’’ n 1.4 tD 0 93 Cu 4’ I 4c 0 3 - 4E-4~ M ~ C

  9. Observation of a charged charmoniumlike structure in e+e- to pi+pi-J/psi at \\sqrt{s}=4.26 GeV

    CERN Document Server

    Ablikim, M; Ai, X C; Albayrak, O; Ambrose, D J; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Becker, J; Bennett, J V; Bertani, M; Bian, J M; Boger, E; Bondarenko, O; Boyko, I; Briere, R A; Bytev, V; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, Y B; Cheng, H P; Chu, Y P; Cronin-Hennessy, D; Dai, H L; Dai, J P; Dedovich, D; Deng, Z Y; Denig, A; Denysenko, I; Destefanis, M; Ding, W M; Ding, Y; Dong, L Y; Dong, M Y; Du, S X; Fang, J; Fang, S S; Fava, L; Feng, C Q; Friedel, P; Fu, C D; Fu, J L; Fuks, O; Gao, Q; Gao, Y; Geng, C; Goetzen, K; Gong, W X; Gradl, W; Greco, M; Gu, M H; Gu, Y T; Guan, Y H; Guo, A Q; Guo, L B; Guo, T; Guo, Y P; Han, Y L; Harris, F A; He, K L; He, M; He, Z Y; Held, T; Heng, Y K; Hou, Z L; Hu, C; Hu, H M; Hu, J F; Hu, T; Huang, G M; Huang, G S; Huang, J S; Huang, L; Huang, X T; Huang, Y; Huang, Y P; Hussain, T; Ji, C S; Ji, Q; Ji, Q P; Ji, X B; Ji, X L; Jiang, L L; Jiang, X S; Jiao, J B; Jiao, Z; Jin, D P; Jin, S; Jing, F F; Kalantar-Nayestanaki, N; Kavatsyuk, M; Kopf, B; Kornicer, M; Kühn, W; Lai, W; Lange, J S; Lara, M; Larin, P; Leyhe, M; Li, C H; Li, Cheng; Li, Cui; Li, D M; Li, F; Li, G; Li, H B; Li, J C; Li, K; Li, Lei; Li, Q J; Li, S L; Li, W D; Li, W G; Li, X L; Li, X N; Li, X Q; Li, X R; Li, Z B; Liang, H; Liang, Y F; Liang, Y T; Liao, G R; Liao, X T; Lin, D; Liu, B J; Liu, C L; Liu, C X; Liu, F H; Liu, Fang; Liu, Feng; Liu, H; Liu, H B; Liu, H H; Liu, H M; Liu, H W; Liu, J P; Liu, K; Liu, K Y; Liu, Kai; Liu, P L; Liu, Q; Liu, S B; Liu, X; Liu, Y B; Liu, Z A; Liu, Zhiqiang; Liu, Zhiqing; Loehner, H; Lou, X C; Lu, G R; Lu, H J; Lu, J G; Lu, Q W; Lu, X R; Lu, Y P; Luo, C L; Luo, M X; Luo, T; Luo, X L; Lv, M; Ma, C L; Ma, F C; Ma, H L; Ma, Q M; Ma, S; Ma, T; Ma, X Y; Maas, F E; Maggiora, M; Malik, Q A; Mao, Y J; Mao, Z P; Messchendorp, J G; Min, J; Min, T J; Mitchell, R E; Mo, X H; Mo, Y J; Moeini, H; Morales, C Morales; Moriya, K; Muchnoi, N Yu; Muramatsu, H; Nefedov, Y; Nicholson, C; Nikolaev, I B; Ning, Z; Olsen, S L; Ouyang, Q; Pacetti, S; Park, J W; Pelizaeus, M; Peng, H P; Peters, K; Ping, J L; Ping, R G; Poling, R; Prencipe, E; Qi, M; Qian, S; Qiao, C F; Qin, L Q; Qin, X S; Qin, Y; Qin, Z H; Qiu, J F; Rashid, K H; Rong, G; Ruan, X D; Sarantsev, A; Schaefer, B D; Shao, M; Shen, C P; Shen, X Y; Sheng, H Y; Shepherd, M R; Song, W M; Song, X Y; Spataro, S; Spruck, B; Sun, D H; Sun, G X; Sun, J F; Sun, S S; Sun, Y J; Sun, Y Z; Sun, Z J; Sun, Z T; Tang, C J; Tang, X; Tapan, I; Thorndike, E H; Toth, D; Ullrich, M; Uman, I; Varner, G S; Wang, B Q; Wang, D; Wang, D Y; Wang, K; Wang, L L; Wang, L S; Wang, M; Wang, P; Wang, P L; Wang, Q J; Wang, S G; Wang, X F; Wang, X L; Wang, Y D; Wang, Y F; Wang, Y Q; Wang, Z; Wang, Z G; Wang, Z Y; Wei, D H; Wei, J B; Weidenkaff, P; Wen, Q G; Wen, S P; Werner, M; Wiedner, U; Wu, L H; Wu, N; Wu, S X; Wu, W; Wu, Z; Xia, L G; Xia, Y X; Xiao, Z J; Xie, Y G; Xiu, Q L; Xu, G F; Xu, G M; Xu, Q J; Xu, Q N; Xu, X P; Xu, Z R; Xue, F; Xue, Z; Yan, L; Yan, W B; Yan, Y H; Yang, H X; Yang, Y; Yang, Y X; Ye, H; Ye, M; Ye, M H; Yu, B X; Yu, C X; Yu, H W; Yu, J S; Yu, S P; Yuan, C Z; Yuan, Y; Zafar, A A; Zallo, A; Zang, S L; Zeng, Y; Zhang, B X; Zhang, B Y; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H H; Zhang, H Y; Zhang, J Q; Zhang, J W; Zhang, J Y; Zhang, J Z; Zhang, LiLi; Zhang, R; Zhang, S H; Zhang, X J; Zhang, X Y; Zhang, Y; Zhang, Y H; Zhang, Z P; Zhang, Z Y; Zhang, Zhenghao; Zhao, G; Zhao, H S; Zhao, J W; Zhao, K X; Zhao, Lei; Zhao, Ling; Zhao, M G; Zhao, Q; Zhao, S J; Zhao, T C; Zhao, X H; Zhao, Y B; Zhao, Z G; Zhemchugov, A; Zheng, B; Zheng, J P; Zheng, Y H; Zhong, B; Zhou, L; Zhou, X; Zhou, X K; Zhou, X R; Zhu, C; Zhu, K; Zhu, K J; Zhu, S H; Zhu, X L; Zhu, Y C; Zhu, Y M; Zhu, Y S; Zhu, Z A; Zhuang, J; Zou, B S; Zou, J H

    2013-01-01

    We study the process e+e- to pi+pi-J/psi at a center-of-mass energy of 4.260 GeV using a 525 pb^{-1} data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be (62.9\\pm 1.9\\pm 3.7) pb, consistent with the production of the Y(4260). We observe a structure at around 3.9 GeV/c^2 in the \\pi^\\pm J/psi mass spectrum, which we refer to as the Z_c(3900). If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the \\pi^\\pm J/psi invariant mass spectrum, neglecting interference, results in a mass of (3899.0\\pm 3.6\\pm 4.9) MeV/c^2 and a width of (46\\pm 10\\pm 20) MeV. Its production ratio is measured to be R=\\frac{\\sigma(e+e- to \\pi^\\pm Z_c(3900)^\\mp to pi+pi-J/psi))} {\\sigma(e+e- to pi+pi-J/psi)}=(21.5\\pm 3.3\\pm 7.5)%. In all measurements the first errors are statistical and the second are systematic.

  10. Multifractals in Western Major STOCK Markets Historical Volatilities in Times of Financial Crisis

    Science.gov (United States)

    Lahmiri, Salim

    In this paper, the generalized Hurst exponent is used to investigate multifractal properties of historical volatility (CHV) in stock market price and return series before, during and after 2008 financial crisis. Empirical results from NASDAQ, S&P500, TSE, CAC40, DAX, and FTSE stock market data show that there is strong evidence of multifractal patterns in HV of both price and return series. In addition, financial crisis deeply affected the behavior and degree of multifractality in volatility of Western financial markets at price and return levels.

  11. Wavelet analysis method for detection of DDoS attack on the basis of Self-similarity

    Institute of Scientific and Technical Information of China (English)

    REN Xunyi; WANG Ruchuan; WANG Haiyan

    2007-01-01

    As the waditional methods were not suitable for the detection of small distribute denial of service(DDoS)attack and identification of busy traffc.on the basis of the influence of DDoS attack,one wavelet analysis method was proposed.Wavelet method of toefficient variance analysis was deduced and a software model for the method was designed.In addition.key issues of the choice of wavelet and calculation of Hurst were resolved.The experimental results show that the proposed method has more advantages in accurately identilying busy traffic and detection of small DDoS attack.

  12. Chaos in social learning with multiple true states

    Science.gov (United States)

    Fang, Aili; Wang, Lin; Zhao, Jiuhua; Wang, Xiaofan

    2013-11-01

    Most existing social learning models assume that there is only one underlying true state. In this work, we consider a social learning model with multiple true states, in which agents in different groups receive different signal sequences generated by their corresponding underlying true states. Each agent updates his belief by combining his rational self-adjustment based on the external signals he received and the influence of his neighbors according to their communication. We observe chaotic oscillation in the belief evolution, which implies that neither true state could be learnt correctly by calculating the largest Lyapunov exponents and Hurst exponents.

  13. Effects of Different Connectivity Topologies in Small World Networks on EEG-Like Activities

    Science.gov (United States)

    Lin, Min; Zhang, Gui-Qing; Chen, Tian-Lun

    2006-02-01

    Based on our previously pulse-coupled integrate-and-fire neuron model in small world networks, we investigate the effects of different connectivity topologies on complex behavior of electroencephalographic-like signals produced by this model. We show that several times series analysis methods that are often used for analyzing complex behavior of electroencephalographic-like signals, such as reconstruction of the phase space, correlation dimension, fractal dimension, and the Hurst exponent within the rescaled range analysis (R/S). We find that the different connectivity topologies lead to different dynamical behaviors in models of integrate-and-fire neurons.

  14. Epileptic EEG: a comprehensive study of nonlinear behavior.

    Science.gov (United States)

    Daneshyari, Moayed; Kamkar, L Lily; Daneshyari, Matin

    2010-01-01

    In this study, the nonlinear properties of the electroencephalograph (EEG) signals are investigated by comparing two sets of EEG, one set for epileptic and another set for healthy brain activities. Adopting measures of nonlinear theory such as Lyapunov exponent, correlation dimension, Hurst exponent, fractal dimension, and Kolmogorov entropy, the chaotic behavior of these two sets is quantitatively computed. The statistics for the two groups of all measures demonstrate the differences between the normal healthy group and epileptic one. The statistical results along with phase-space diagram verify that brain under epileptic seizures possess limited trajectory in the state space than in healthy normal state, consequently behaves less chaotically compared to normal condition.

  15. Effects of Different Connectivity Topologies in Small World Networks on EEG-Like Activities

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    Based on our previously pulse-coupled integrate-and-fire neuron model in small world networks, we investi gate the effects of different connectivity topologies on complex behavior of electroencephalographic-like signals produced by this model. We show that several times series analysis methods that are often used for analyzing complex behavior of electroencephalographic-like signals, such as reconstruction of the phase space, correlation dimension, fractal dimension,and the Hurst exponent within the rescaled range analysis (R/S). We find that the different connectivity topologies lead to different dynamical behaviors in models of integrate-and-fire neurons.

  16. Formation Mechanism of the Accumulative Magnification Effect in a Financial Time Series

    Institute of Scientific and Technical Information of China (English)

    DUAN Wen-Qi

    2012-01-01

    Structural information contained in financial time series can be magnified effectively by constructing the accumulative return.In order to make the magnification effects of different financial time series comparative,we first propose a standard method to characterize the strength of the accumulative magnification effect.Then,we employ decomposed-randomized technology to uncover the formation mechanism of the accumulative magnification effect.Our results show that (1) the standard deviation pattern is determined by volatility dependence,(2) the Hurst exponent pattern is induced by sign dependence,(3) an approximate entropy pattern is caused by the combined effect of sign dependence and volatility dependence.

  17. Emergence of self-similarity in football dynamics

    CERN Document Server

    Kijima, Akifumi; Shima, Hiroyuki; Yamamoto, Yuji

    2014-01-01

    The multiplayer dynamics of a football game is analyzed to unveil self-similarities in the time evolution of player and ball positioning. Temporal fluctuations in both the team-turf boundary and the ball location are uncovered to follow the rules of fractional Brownian motion with a Hurst exponent of H=0.7. The persistence time below which self-similarity holds is found to be several tens of seconds, implying a characteristic time scale that governs far-from-equilibrium motion on a playing field.

  18. Investigation of Pipeline Concepts, Materials and Construction Techniques

    Science.gov (United States)

    1976-06-01

    Friction Factor - Hazen-Williams coefficient (usually 140-150). Weight - The average weight (in pounds) of fabricated pipe sections per foot j Li of...f(PL, MA, DI, WT) FF = f(MA) (Hazen-W I I lams Coefficient , usually 140-150) WE = 226 MA (SL) (WT)(2 DI + WT) MA In lb/In3 (density) SL In ft WT In...Company 9 Hendricks Avenue and Route 30I Chesi hurst, New Jersey 08089 Transpolymer Industries, Incorporated 100 South Justison Post Office Box 1945T

  19. Multifractal Detrended Fluctuation Analysis of Interevent Time Series in a Modified OFC Model

    Institute of Scientific and Technical Information of China (English)

    LIN Min; YAN Shuang-Xi; ZHAO Gang; WANG Gang

    2013-01-01

    We use multifractal detrended fluctuation analysis (MF-DFA) method to investigate the multifractal behavior of the interevent time series in a modified Olami-Feder-Christensen (OFC) earthquake model on assortative scale-free networks.We determine generalized Hurst exponent and singularity spectrum and find that these fluctuations have multifractal nature.Comparing the MF-DFA results for the original interevent time series with those for shuffled and surrogate series,we conclude that the origin of multifractality is due to both the broadness of probability density function and long-range correlation.

  20. Strong Self-Similar Fluctuations of Target Fragments in Ring-like Events in Ultra-Relativistic Nuclear Collision

    Institute of Scientific and Technical Information of China (English)

    Dipak Ghosh; Argha Deb; Samabrata Sarkar; Prabir Kumar Haldar

    2006-01-01

    @@ The intermittent fluctuation of target evaporated particles is studied in both ring-like and jet-like events emitted in 32S-emulsion interactions at 200 AGeV within the framework of multi-dimensional factorial moment methodology using the concept of the Hurst exponent. It is observed that the intermittent fluctuation in the ring-like event is self-similar, whereas in the jet-like event fluctuation is self-affine. However, study indicates that the strength of fluctuation in the ring-like events is much stronger than that in the jet-like events.

  1. A Milstein-type scheme without Levy area terms for SDEs driven by fractional Brownian motion

    CERN Document Server

    Deya, Aurélien; Tindel, Samy

    2010-01-01

    In this article, we study the numerical approximation of stochastic differential equations driven by a multidimensional fractional Brownian motion (fBm) with Hurst parameter greater than 1/3. We introduce an implementable scheme for these equations, which is based on a second order Taylor expansion, where the usual Levy area terms are replaced by products of increments of the driving fBm. The convergence of our scheme is shown by means of a combination of rough paths techniques and error bounds for the discretisation of the Levy area terms.

  2. Evidence of self-affine multiplicity fluctuation of target residues in 84Kr-AgBr interactions at 1.7 AGeV

    Institute of Scientific and Technical Information of China (English)

    ZHANG Dong-Hai; LI Hui-Ling

    2009-01-01

    Self-afline multiplicity scaling is investigated in the framework of a two-dimensional factorial mo-ment methodology using the concept of the Hurst exponent (H). Analyzing the experimental data of target evaporated fragments emitted in84Kr-AgBr interactions at 1.7 AGeV revealed that the best power law behav-ior is exhibited for H = 0.3 indicating a self-affine multiplicity fluctuation pattern. A signal of multifractality is also observed from knowledge of the anomalous fractal dimension dq extracted from the intermittency exponent aq of the anisotropic phase space scenario.

  3. Application of adaptive neuro-fuzzy interference system models for prediction of forest fires in the usa on the basis of solar activity

    Directory of Open Access Journals (Sweden)

    Radovanović Milan M.

    2015-01-01

    Full Text Available In this research we search for a functional dependence between the occurrence of forest fires in the USA and the factors which characterize the solar activity. For this purpose we used several methods (R/S analysis, Hurst index to establish potential links between the influx of some parameters from the sun and the occurrence of forest fires with lag of several days. We found evidence for a connection and developed a prognostic scenario based on the Adaptive neuro-fuzzy interference system (ANFIS technique. This scenario allows the prediction between 79-93% of forest fires. [Projekat Ministarstva nauke Republike Srbije, br. III47007

  4. Pruebas de comportamiento caótico en índices bursátiles americanos

    OpenAIRE

    Franco Parisi; Christian Espinosa; Antonio Parisi

    2007-01-01

    Este artículo valida el comportamiento caótico en las Bolsas de Valores de Argentina, Brasil, Canadá, Chile, Estados Unidos, Perú y México utilizando los índices accionarios Merval, Bovespa, S&P TSX Composite, IPSA, IGPA, S&P 500, Dow Jones Industrials, Nasdaq, IGBVL e IPC, respectivamente. Los resultados de distintas técnicas y métodos como análisis gráfico, análisis de recurrencia, entropía de espacio temporal, coeficiente de Hurst, exponente de Lyapunov y dimensión de correlación, apoyan l...

  5. Stochastic Oscillations of General Relativistic Disks Described by a Fractional Langevin Equation with Fractional Gaussian Noise

    Indian Academy of Sciences (India)

    Wang Zhi-Yun; Chen Pei-Jie

    2016-06-01

    A generalized Langevin equation driven by fractional Brownian motion is used to describe the vertical oscillations of general relativistic disks. By means of numerical calculation method, the displacements, velocities and luminosities of oscillating disks are explicitly obtained for different Hurst exponent $H$. The results show that as $H$ increases, the energies and luminosities of oscillating disk are enhanced, and the spectral slope at high frequencies of the power spectrum density of disk luminosity is also increased. This could explain the observational features related to the Intra Day Variability of the BL Lac objects.

  6. Different Multifractal Scaling of the 0 cm Average Ground Surface Temperature of Four Representative Weather Stations over China

    Directory of Open Access Journals (Sweden)

    Lei Jiang

    2013-01-01

    Full Text Available The temporal scaling properties of the daily 0 cm average ground surface temperature (AGST records obtained from four selected sites over China are investigated using multifractal detrended fluctuation analysis (MF-DFA method. Results show that the AGST records at all four locations exhibit strong persistence features and different scaling behaviors. The differences of the generalized Hurst exponents are very different for the AGST series of each site reflecting the different scaling behaviors of the fluctuation. Furthermore, the strengths of multifractal spectrum are different for different weather stations and indicate that the multifractal behaviors vary from station to station over China.

  7. Liquidity and the multiscaling properties of the volume traded on the stock market

    CERN Document Server

    Eisler, Z; Eisler, Zoltan; Kertesz, Janos

    2006-01-01

    We investigate the correlation properties of transaction data from the New York Stock Exchange. The trading activity f(t) of each stock displays a crossover from weaker to stronger correlations at time scales 60-390 minutes. In both regimes, the Hurst exponent H depends logarithmically on the liquidity of the stock, measured by the mean traded value per minute. All multiscaling exponents tau(q) display a similar liquidity dependence, which clearly indicates the lack of a universal form assumed by other studies. The origin of this behavior is both the long memory in the frequency and the size of consecutive transactions.

  8. Characteristic time scales in the American dollar-Mexican peso exchange currency market

    Science.gov (United States)

    Alvarez-Ramirez, Jose

    2002-06-01

    Daily fluctuations of the American dollar-Mexican peso exchange currency market are studied using multifractal analysis methods. It is found evidence of multiaffinity of daily fluctuations in the sense that the qth-order (roughness) Hurst exponent Hq varies with changes in q. It is also found that there exist several characteristic time scales ranging from week to year. Accordingly, the market exhibits persistence in the sense that instabilities introduced by market events acting around the characteristic time scales (mainly, quarter and year) would propagate through the future market activity. Some implications of our results on the regulation of the dollar-mexpeso market activity are discussed.

  9. A vision of transdisciplinarity laying foundations for a world knowledge dialogue

    CERN Document Server

    Darbellay, Frederic; Billotte, Jerome; Waldvogel, Francis

    2008-01-01

    AcknowledgementsWhere, and Whence ?by André HurstThe Rules of the Game for a Knowledge Dialoguexby Dame Julia HigginsIntroductionFor a World Knowledge Dialogueby Frédéric Darbellay, Moira Cockell, Jérôme Billotte andFrancis WaldvogelChapter 1 Complexity and Neurosciences in Dialogue :Towards a New Theory of the Brain ?1.1 From Brain Dynamics to Consciousness :How Matter Becomes ImaginationAnalysis by Frédéric Darbellay of the presentationby Gerald M. Edelman1.2 Towards a Neuroscience of the Capable Perso

  10. Long-range dependence and sea level forecasting

    CERN Document Server

    Ercan, Ali; Abbasov, Rovshan K

    2013-01-01

    This study shows that the Caspian Sea level time series possess long range dependence even after removing linear trends, based on analyses of the Hurst statistic, the sample autocorrelation functions, and the periodogram of the series. Forecasting performance of ARMA, ARIMA, ARFIMA and Trend Line-ARFIMA (TL-ARFIMA) combination models are investigated. The forecast confidence bands and the forecast updating methodology, provided for ARIMA models in the literature, are modified for the ARFIMA models. Sample autocorrelation functions are utilized to estimate the differencing lengths of the ARFIMA

  11. Evidence of multi-affinity in the Japanese stock market

    Science.gov (United States)

    Katsuragi, Hiroaki

    2000-04-01

    Fluctuations of the Japanese stock market (Tokyo Stock Price Index: TOPIX) are analyzed using a multi-affine analysis method. In the research to date, only some simulated self-affine models have shown multi-affinity. In most experiments using observations of self-affine fractal profiles, multi-affinity has not been found. However, we find evidence of multi-affinity in fluctuations of the Japanese stock market (TOPIX). The qth-order Hurst exponent Hq varies with changes in q. This multi-affinity indicates that there are plural mechanisms that affect the same time scale as stock market price fluctuation dynamics.

  12. On the multifractal effects generated by monofractal signals

    CERN Document Server

    Grech, Dariusz

    2013-01-01

    We study quantitatively the level of false multifractal signal one may encounter while analyzing multifractal phenomena in time series within multifractal detrended fluctuation analysis (MF-DFA). The investigated effect appears as a result of finite length of used data series and is additionally amplified by the long-term memory the data eventually may contain. We provide the detailed quantitative description of such apparent multifractal background signal as a threshold in spread of generalized Hurst exponent values $\\Delta h$ or a threshold in the width of multifractal spectrum $\\Delta \\alpha$ below which multifractal properties of the system are only apparent, i.e. do not exist, despite $\\Delta\\alpha\

  13. Analysis of long-range correlation in sequences data of proteins

    Directory of Open Access Journals (Sweden)

    ADRIANA ISVORAN

    2007-04-01

    Full Text Available The results presented here suggest the existence of correlations in the sequence data of proteins. 32 proteins, both globular and fibrous, both monomeric and polymeric, were analyzed. The primary structures of these proteins were treated as time series. Three spatial series of data for each sequence of a protein were generated from numerical correspondences between each amino acid and a physical property associated with it, i.e., its electric charge, its polar character and its dipole moment. For each series, the spectral coefficient, the scaling exponent and the Hurst coefficient were determined. The values obtained for these coefficients revealed non-randomness in the series of data.

  14. Modeling and analysis of self-similar traffic source based on fractal-binomial-noise-driven Poisson process

    Institute of Scientific and Technical Information of China (English)

    ZHANG Di; ZHANG Min; YE Pei-da

    2006-01-01

    This article explores the short-range dependence (SRD) and the long-range dependence (LRD) of self-similar traffic generated by the fractal-binomial-noise-driven Poisson process (FBNDP) model and lays emphasis on the former. By simulation, the SRD decaying trends with the increase of Hurst value and peak rate are obtained, respectively. After a comprehensive analysis of accuracy of self-similarity intensity,the optimal range of peak rate is determined by taking into account the time cost, the accuracy of self-similarity intensity,and the effect of SRD.

  15. A Stability Result for Stochastic Differential Equations Driven by Fractional Brownian Motions

    Directory of Open Access Journals (Sweden)

    Bruno Saussereau

    2012-01-01

    Full Text Available We study the stability of the solutions of stochastic differential equations driven by fractional Brownian motions with Hurst parameter greater than half. We prove that when the initial conditions, the drift, and the diffusion coefficients as well as the fractional Brownian motions converge in a suitable sense, then the sequence of the solutions of the corresponding equations converge in Hölder norm to the solution of a stochastic differential equation. The limit equation is driven by the limit fractional Brownian motion and its coefficients are the limits of the sequence of the coefficients.

  16. Application of fractal characteristic quantities of pressure fluctuation in subcooled boiling regime recognition

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The dynamical behavior of the subcoole d boiling two-phase system ws introduced and discussed. With the introduction of fractal concept, an analysis of the fractal feature of pressure wave signals fiom nonlinear dynamics point of view. was carried out. Meanwhile, the pseudo phase diagrans of typical time series of sound pressure were given. Finally, through dynamic clustering and on the basis of calculating correlation dimension and Hurst exponent of pressure wave time series on different subcooling conditions, the recognition of developing regime of the two-phase system was delivered, which might provide a promising approach of recognition and diagnosis of a boiling system.

  17. Pronounced Fluctuations of Target Fragments in Forward Hemisphere Only in Ultra Relativistic Nuclear Collision

    Institute of Scientific and Technical Information of China (English)

    Dipak Ghosh; Argha Dev; Samabrata Sarkar; Prabir Kumar Haldar

    2006-01-01

    Dynamical fluctuation of target evaporated black particles is investigated in both forward and backward hemispheres within the framework of multi-dimensional factorial moment methodology using the brilliant concept of the Hurst exponent. We analyse the black particles emitted in 32S-AgBr interactions at 200AGeV and it is evident that the dynamical fluctuation in the backward hemisphere is self-afnne. In the forward hemisphere, dynamical fluctuation is self-similar but not self-affine. However, study indicates that the fluctuation in the forward hemisphere is more pronounced than that in backward hemisphere.

  18. Reaction-diffusion-branching models of stock price fluctuations

    Science.gov (United States)

    Tang, Lei-Han; Tian, Guang-Shan

    Several models of stock trading (Bak et al., Physica A 246 (1997) 430.) are analyzed in analogy with one-dimensional, two-species reaction-diffusion-branching processes. Using heuristic and scaling arguments, we show that the short-time market price variation is subdiffusive with a Hurst exponent H=1/4. Biased diffusion towards the market price and blind-eyed copying lead to crossovers to the empirically observed random-walk behavior ( H=1/2) at long times. The calculated crossover forms and diffusion constants are shown to agree well with simulation data.

  19. Signatures of the self-affinity of fracture and faulting in pre-seismic electromagnetic emissions

    CERN Document Server

    Potirakis, S M; Kopanas, J; Antonopoulos, G

    2012-01-01

    Of particular interest is the detection of precursors of an impending rupture. Theoretical, numerical studies along with laboratory experiments indicate that precursory signs of an impending failure are the sudden drop of fractal dimension and entropy, along with the anticorrelated, for large system sizes, rising of Hurst exponent and drop of a frequency-size power-law scaling exponent. Based on the widely accepted concept of the self-affine nature of faulting and fracture, we examine whether these precursory signs exist in the fracto-electromagnetic emissions resulting from the activation of a single fault.

  20. Análisis de la Tolerancia al Ruido de Características Basadas en Dinámica no Lineal Sobre Señales Fonocardiográficas

    Directory of Open Access Journals (Sweden)

    Carolina Ospina-Aguirre

    2010-12-01

    Full Text Available A very desirable attribute in automatic pathology detection systems is noise robustness, such that the presence of noise should not significantly affect the ability to detect pathologies. This paper explores the discriminatory potential that nonlinear dynamic features, in particular, the Hurst exponent, the maximum Lyapunov exponent and correlation dimension, can provide in the detection of heart murmurs using phonocardiographic signals contaminated with different levels of noise. At the same time comparing with features obtained from time frequency representations. The results show the strength of features based on nonlinear dynamics for functional state classification tasks, even on signals with high noise levels.

  1. A statistical hiding algorithm based on self-similar network traffic

    Institute of Scientific and Technical Information of China (English)

    SHA Xue-jun; XU Yu-bin; QIANG Wei

    2008-01-01

    Although the encryption of network packets significantly increases privacy, the density of the traffic can still provide useful information to the observer, and maybe results in the breach of confidentiality. In this paper, we address issues related to hiding information in self-similar network, which is proved to be similar with modem communication network. And a statistical hiding algorithm is proposed for traffic padding. The figures and the comparison of Hurst Parameters before and after traffic padding, show the effective performance of the algorithm.

  2. Can trade opportunities and returns be generated in a trend persistent series? Evidence from global indices

    Science.gov (United States)

    Mitra, S. K.; Bawa, Jaslene

    2017-03-01

    In this study, we explore the possibility of generating trade opportunities and returns when a financial stock index series is trend persistent. Through application of Hurst coefficient based on the modified range to standard deviation analysis (Weron, 2002) in a sample of 31 leading global indices during the period December 2000 to November 2015, we found periods of trend persistence. We developed and tested a set of trading strategies on these periods of trend persistent in the financial series and found that significant positive returns can be generated when a series displayed upward trend persistence.

  3. Evolution of stress state of granular medium under multiple dynamic impacts

    Science.gov (United States)

    Bobryakov, AP; Kosykh, VP; Revuzhenko, AF

    2017-02-01

    The paper describes experimental measurement of pressure in marble chips placed in cylindrical reservoir subjected to weak impacting within a long time. It is found that pressure in the granular material changes non-monotonically but fluctuates relative to hydrostatic pressure with the amplitude equaling order of magnitude of the latter. The fractal analysis of the experimental curves of pressure and number of impacts is performed. The Hurst exponent ranges as 0.67-0.73, and the process of pressure variation is fractal and possesses long-term “memory.”

  4. Signatures of the self-affinity of fracture and faulting in pre-seismic electromagnetic emissions

    Directory of Open Access Journals (Sweden)

    S. M. Potirakis

    2014-04-01

    Full Text Available Of particular interest is the detection of precursors of an impending rupture. Theoretical, numerical studies along with laboratory experiments indicate that precursory signs of an impending failure are the sudden drop of fractal dimension and entropy, along with the anticorrelated, for large system sizes, rising of Hurst exponent and drop of a frequency–size power-law scaling exponent. Based on the widely accepted concept of the self-affine nature of faulting and fracture, we examine whether these precursory signs exist in the fracto-electromagnetic emissions resulting from the activation of a single fault.

  5. Investigation of self-affine multiplicity fluctuations of proton emission in 84Kr-AgBr interactions at 1.7 A GeV

    Institute of Scientific and Technical Information of China (English)

    ZHANG Dong-Hai; LI Hui-Ling

    2009-01-01

    Self-affine multiplicity scaling is investigated in the framework of a two-dimensional factorial mo-ment methodology using the concept of the Hurst exponent (H). Investigation of the experimental data of medium-energy knocked-out target protons in SaKr-AgBr interactions at 1.7 AGeV reveals that the best power law behavior is exhibited for H = 0.4, indicating a self-affine multiplicity fluctuation pattern. Multifractalit yamong the knocked-out target protons is also observed in the data.

  6. Consistency of detrended fluctuation analysis

    CERN Document Server

    Løvsletten, Ola

    2016-01-01

    The scaling function $F(s)$ in detrended fluctuation analysis (DFA) scales as $F(s)\\sim s^{H}$ for stochastic processes with Hurst exponents $H$. We prove this scaling law for both stationary stochastic processes with $01$. As a final application of the new theory, we present an estimator $\\hat F(s)$ that can handle missing data in regularly sampled time series without the need for interpolation schemes. Under mild regularity conditions, $\\hat F(s)$ is equal in expectation to the fluctuation function $F(s)$ in the gap-free case.

  7. Evidence of self-affne multiplicity scaling of charged-particle multiplicity distribution in hadron–nucleus interaction

    Indian Academy of Sciences (India)

    Dipak Ghosh; Argha Deb; Sitaram Pal; Swarnapratim Bhattacharyya

    2007-05-01

    A self-affne analysis of charged-particle multiplicity distribution (protons + pions) in − –AgBr interaction at 350 GeV/c is performed according to the two-dimensional factorial moment methodology using the concept of Hurst exponent in $X_{\\cos\\theta^{-}}$ phase space. Comparing with the results obtained from self-similar analysis, the self affine analysis shows a better power-law behaviour. Corresponding results are compared with shower multiplicity distribution (pions). Multifractal behaviour is observed for both types of distributions.

  8. Irregular-regular-irregular mixed mode oscillations in a glow discharge plasma

    Energy Technology Data Exchange (ETDEWEB)

    Ghosh, Sabuj, E-mail: sabuj.ghosh@saha.ac.in; Shaw, Pankaj Kumar, E-mail: pankaj.shaw@saha.ac.in; Saha, Debajyoti, E-mail: debajyoti.saha@saha.ac.in; Janaki, M. S., E-mail: ms.janaki@saha.ac.in; Iyengar, A. N. Sekar, E-mail: ansekar.iyengar@saha.ac.in [Plasma Physics Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata-700064 (India)

    2015-05-15

    Floating potential fluctuations of a glow discharge plasma are found to exhibit different kinds of mixed mode oscillations. Power spectrum analysis reveals that with change in the nature of the mixed mode oscillation (MMO), there occurs a transfer of power between the different harmonics and subharmonics. The variation in the chaoticity of different types of mmo was observed with the study of Lyapunov exponents. Estimates of correlation dimension and the Hurst exponent suggest that these MMOs are of low dimensional nature with an anti persistent character. Numerical modeling also reflects the experimentally found transitions between the different MMOs.

  9. China’s Relations with Portuguese-speaking Countries: A Growing but Unnoticed Relation

    Science.gov (United States)

    2012-09-01

    Migrants in Cape Verdi ,” China Returns to Africa: A Rising Power and a Continent Embrace, ed. Chris Alden et al. (New York, NY: Columbia/Hurst, 2008...Jorgen Carling and Heidi Ostbo Haugen, “Mix Fates of a Popular Minority.” 59 “300 Chinese Shops in Cape Verdi ,” Oje, November 12, 2010. 60 Statistics...were provided by the Government of Cape Verdi , August 2008. 61 “Macau Beats Vegas at its Own Game,” The Guardian, July 20, 2007. 28 casinos. Cape

  10. Anomalous Fluctuations of Currents in Sinai-Type Random Chains with Strongly Correlated Disorder

    Science.gov (United States)

    Oshanin, Gleb; Rosso, Alberto; Schehr, Grégory

    2013-03-01

    We study properties of a random walk in a generalized Sinai model, in which a quenched random potential is a trajectory of a fractional Brownian motion with arbitrary Hurst parameter H, 0segment of length L of such a chain decay as L-(1-H), independently of k, which suggests that despite a logarithmic confinement the average current is much higher than its Fickian counterpart in homogeneous systems. Our results reveal a paradoxical behavior such that, for fixed n and L, the mean-square displacement decreases when one varies H from 0 to 1, while the average current increases. This counterintuitive behavior is explained via an analysis of representative realizations of disorder.

  11. Rescaled Range Analysis in Higher Dimensions

    Directory of Open Access Journals (Sweden)

    Jie Fan

    2013-05-01

    Full Text Available In this study, we give a rescaled range analysis method employed to demonstrate long-range correlations and the presence of periodical features for a time series. An extension of the rescaled range method to estimate the Hurst exponent of high-dimensional fractals is proposed in this study. The two-dimensional rescaled range analysis is used to analyze traffic data, reveal interesting scaling behavior with physical grounds. The relation between the one-dimensional rescaled range method and two-dimensional rescaled range method is interpreted carefully.

  12. AN ARCHAIC USE OF THE WORD “İLERİ” IN EASTERN THRACE ACCENTS DOĞU TRAKYA AĞIZLARINDA “İLERİ” SÖZCÜĞÜNÜN ESKİCİL BİR KULLANIMI

    Directory of Open Access Journals (Sweden)

    Bülent HÜNERLİ

    2011-01-01

    Full Text Available It is seen that many archaic elements which are not used in standart Turkey Turkish are used both in affixes and words in living dialects of Turkey Turkish. Our coming across the words semantic fields of which are preserved, extended,restricted or changed in written language of Anatolian and Rumelian dialects is an example. The word “ileri” is one of these words ; it has a semantic restriction in Turkey Turkish ,yet it is used with an archaic meaning in Eastern Thrace dialects apart from its use as an adverb of place. This word and its derivatives are only considered under the title of adverb of place in grammar books of recent Turkey Turkish while they are used in the meanings of “önce, önceden, önceki, öncekiler etc.” in Old Anatolian area. However, the word “ileri” has preserved this archaic meaning (önce, önceden, öncekiler vb. and it has been used in the conceptual field of “öncelik bildirme” on its own or with other affixes. In this study, this subject will be the focus. Ölçünlü Türkiye Türkçesinde kullanılmayan pek çok eskicil ögenin Türkiye Türkçesinin yaşayan ağızlarında gerek eklerde gerekse sözcüklerde kullanıldığı görülmektedir. Anadolu ve Rumeli ağızlarında bugün için yazı dilindeki anlam alanı korunmuş, genişlemiş, daralmış veya değişmiş sözcüklerle karşılaşmamız bu duruma örnektir. Türkiye Türkçesinde anlamı daralan; fakat Doğu Trakya ağızlarında yer-yön zarfı olarak kullanımının dışında eskicil anlamıyla kullanılan “ileri” sözcüğü bunlardan biridir. Bu sözcük ve türevleri Eski Anadolu Türkçesi sahasında “önce, önceden, önceki, öncekiler vb.” anlamlarında kullanılırken günümüz Türkiye Türkçesi gramer kitaplarında sadece yer-yön zarfı başlığı altında değerlendirilmektedir. Doğu Trakya ağızlarında ise “ileri” sözcüğü bu eskicil anlamını (önce, önceden, öncekiler vb. korumuş olup

  13. 曝气生物滤池工艺脱氮性能及反硝化细菌群落结构特征研究%Study on the Nitrogen Removal Performance and the Characteristics of Denitrification Bacterial Community Structure of Biological Aerated Filter

    Institute of Scientific and Technical Information of China (English)

    彭晓兰; 刘聪; 陈吕军

    2012-01-01

    The nitrogen removal performance and the denitrification bacterial community structure of two pre-denitrification biological aeration filter(BAF) processes with different media combinations,the ceramic-zeolite BAF process(C-Z BAF) and the zeolite-ceramic BAF process(Z-C BAF),were compared at different C/N ratios.The results showed that the average TN removal efficiency of Z-C BAF was higher than that of C-Z BAF,and the advantage was more notable at low C/N ratio.When the C/N ratio decreased to 3.3,the average TN removal efficiency of Z-C BAF was 20% higher than that of C-Z BAF.Comparing the microbial community structure of the two combinations at different C/N ratios,it was found that the richness and diversity of denitrification bacterial community decreased significantly with the decrease of C/N ratio.At low C/N ratio,within the whole oxic filter of Z-C BAF,nosZ genetic T-RFs were detected with more than 20% relative abundance,whereas no nosZ genetic T-RFs were detected at the upper oxic filter of C-Z BAF by PCR amplification.The results indicated that the simultaneous nitrification and denitrification function of Z-C BAF was better than that of C-Z BAF.At low C/N ratio,the nitrogen removal efficiency of Z-C BAF was obviously higher than that of C-Z BAF.Thus,compared to C-Z BAF,Z-C BAF had greater potential on the treatment of wastewater with low organic concentration and low C/N ratio.%比较了两组不同填料组合的前置反硝化曝气生物滤池(biological aeration filter,BAF)脱氮工艺:陶粒-沸石BAF工艺(C-Z BAF)和沸石-陶粒BAF工艺(Z-C BAF),在不同C/N条件下的脱氮效果及滤料表面的反硝化细菌群落结构特征.结果表明,Z-C BAF对TN的平均去除效率高于C-Z BAF,且在低C/N条件下Z-C BAF的优势更加明显,当C/N为3.3时Z-C BAF的TN平均去除率比C-Z BAF高出20%.测定2种组合在不同C/N条件下的反硝化细菌群落结构发现,随着C/N的降低,2种组合反硝化细菌

  14. Predictive signs of high-magnitude mainshocks based on the analysis of time behaviour of fractal parameters

    Science.gov (United States)

    Martinez, Maria-Dolors; Amir Hosseini, Seyed; Lana, Xavier; Serra, Carina

    2014-05-01

    The predictability of three high-magnitude mainshocks at Southern California (Landers, 1992, MW7.3; Northridge, 1994, MW6.7; Hector Mine, 1999, MW7.1) is investigated by analysing the time evolution of several fractal parameters. The database is obtained from the SCSN (Southern California Seismic Network) catalogue for the 1981-2007 recording period and spatially restricted to the three aftershock areas. The analysed time series are interevent times, τ, and interevent distances, Δ, between consecutive events, equalling to or exceeding MW 2.0. Time series include then background seismicity and aftershock activity. The purpose is attempting to find out predictive signs for these mainshocks by searching for peaks in the time evolution of two fractal parameters: lacunarity and Hurst exponent. The first goal would be to detect a peak before the mainshock. The second goal would be assessing the significance of this peak by comparing fractal parameters deduced for real time series with those derived for simulated seismic background activity. Although far, the results are not absolutely conclusive up to now, the combined use of lacunarity and Hurst exponent sometimes permits detecting warnings of a future mainshock. As an example, the lacunarity time evolution for Δ gives a warning of Landers mainshock approximately two months before. Another example is an early warning of Northridge mainshock when analysing τ series.

  15. Fractal Structure of inter-event distances: three examples for the aftershock series of Landers, Northridge and Hector Mine mainshocks (Southern California)

    Science.gov (United States)

    Martinez, Maria-Dolors; Monterrubio, Marisol; Lana, Xavier; Serra, Carina

    2013-04-01

    The mechanism of the complex spatial distribution of aftershocks is illustrated by several fractal analyses of the series of distances, Δ, between consecutive events. These fractal techniques are applied to inter-event distance series corresponding to the aftershock series of Landers (1992), Northridge (1994) and Hector Mine (1999) mainshocks (Southern California). A first picture of this complex mechanism is offered by the concept of lacunarity. The persistence, anti-persistence or randomness is quantified by the Hurst exponent. At the same time, long/short range persistence or anti-persistence is determined by means of the autocorrelation function and the exponent β of the power spectrum density, S(?), modelled by the power law ?-β. The self-affine character of these series is analysed using semivariograms and Hausdorff exponents. Additionally, comparisons among Hurst, Hausdorff and β exponents permit to assess if the series of Δ could be modelled by filtered Gaussian noise series. Finally, the formulation based on the reconstruction theorem quantifies the complexity (minimum number of nonlinear equations), loss of memory (Kolmogorov entropy) and predictive instability and chaotic behaviour (Lyapunov exponents and Kaplan-Yorke dimension) of the mechanism.

  16. Correlation of optical properties with the fractal microstructure of black molybdenum coatings

    Energy Technology Data Exchange (ETDEWEB)

    Barrera, Enrique; Gonzalez, Federico [Area de Energia, Division de Ciencias Basicas e Ingenieria, Universidad Autonoma Metropolitana-Iztapalapa, Apartado Postal 55-534, Mexico, D.F. 09340 (Mexico); Rodriguez, Eduardo [Area de Computacion y Sistemas, Division de Ciencias Basicas e Ingenieria, Universidad Autonoma Metropolitana-Iztapalapa, Apartado Postal 55-534, Mexico, D.F. 09340 (Mexico); Alvarez-Ramirez, Jose, E-mail: jjar@xanum.uam.mx [Area de Energia, Division de Ciencias Basicas e Ingenieria, Universidad Autonoma Metropolitana-Iztapalapa, Apartado Postal 55-534, Mexico, D.F. 09340 (Mexico)

    2010-01-01

    Coating is commonly used for improving the optical properties of surfaces for solar collector applications. The coating morphology depends on the deposition conditions, and this determines the final optical characteristics. Coating morphologies are irregular and of fractal nature, so a suitable approach for its characterization should use methods borrowed from fractal analysis. The aim of this work is to study the fractal characteristics of black molybdenum coatings on copper and to relate the fractal parameters to the optical properties. To this end, coating surfaces were prepared via immersion in a solution of ammonium paramolybdate for different deposition periods. The fractal analysis was carried out for SEM and AFM images of the coating surface and the fractal properties were obtained with a recently developed high-dimensional extension of the well-known detrended fluctuation analysis (DFA). The most salient parameter drawn from the application of the DFA is the Hurst index, a parameter related to the roughness of the coating surface, and the multifractality index, which is related to the non-linearity features of the coating morphology. The results showed that optical properties, including absorptance and emittance, are decreasing functions of the Hurst and multifractality indices. This suggests that coating surfaces with high absorptance and emittance values are related to complex coating morphologies conformed within a non-linear structure.

  17. A non linear analysis of human gait time series based on multifractal analysis and cross correlations

    Energy Technology Data Exchange (ETDEWEB)

    Munoz-Diosdado, A [Department of Mathematics, Unidad Profesional Interdisciplinaria de Biotecnologia, Instituto Politecnico Nacional, Av. Acueducto s/n, 07340, Mexico City (Mexico)

    2005-01-01

    We analyzed databases with gait time series of adults and persons with Parkinson, Huntington and amyotrophic lateral sclerosis (ALS) diseases. We obtained the staircase graphs of accumulated events that can be bounded by a straight line whose slope can be used to distinguish between gait time series from healthy and ill persons. The global Hurst exponent of these series do not show tendencies, we intend that this is because some gait time series have monofractal behavior and others have multifractal behavior so they cannot be characterized with a single Hurst exponent. We calculated the multifractal spectra, obtained the spectra width and found that the spectra of the healthy young persons are almost monofractal. The spectra of ill persons are wider than the spectra of healthy persons. In opposition to the interbeat time series where the pathology implies loss of multifractality, in the gait time series the multifractal behavior emerges with the pathology. Data were collected from healthy and ill subjects as they walked in a roughly circular path and they have sensors in both feet, so we have one time series for the left foot and other for the right foot. First, we analyzed these time series separately, and then we compared both results, with direct comparison and with a cross correlation analysis. We tried to find differences in both time series that can be used as indicators of equilibrium problems.

  18. A signal processing based analysis and prediction of seizure onset in patients with epilepsy.

    Science.gov (United States)

    Namazi, Hamidreza; Kulish, Vladimir V; Hussaini, Jamal; Hussaini, Jalal; Delaviz, Ali; Delaviz, Fatemeh; Habibi, Shaghayegh; Ramezanpoor, Sara

    2016-01-05

    One of the main areas of behavioural neuroscience is forecasting the human behaviour. Epilepsy is a central nervous system disorder in which nerve cell activity in the brain becomes disrupted, causing seizures or periods of unusual behaviour, sensations and sometimes loss of consciousness. An estimated 5% of the world population has epileptic seizure but there is not any method to cure it. More than 30% of people with epilepsy cannot control seizure. Epileptic seizure prediction, refers to forecasting the occurrence of epileptic seizures, is one of the most important but challenging problems in biomedical sciences, across the world. In this research we propose a new methodology which is based on studying the EEG signals using two measures, the Hurst exponent and fractal dimension. In order to validate the proposed method, it is applied to epileptic EEG signals of patients by computing the Hurst exponent and fractal dimension, and then the results are validated versus the reference data. The results of these analyses show that we are able to forecast the onset of a seizure on average of 25.76 seconds before the time of occurrence.

  19. Fluctuation analysis of high frequency electric power load in the Czech Republic

    Science.gov (United States)

    Kracík, Jiří; Lavička, Hynek

    2016-11-01

    We analyze the electric power load in the Czech Republic (CR) which exhibits a seasonality as well as other oscillations typical for European countries. Moreover, we detect the 1/f noise property of electrical power load with extra additional peaks that allows to separate it into a deterministic and stochastic part. We then focus on the analysis of the stochastic part using improved Multi-fractal Detrended Fluctuation Analysis method (MFDFA) to investigate power load datasets with a minute resolution. Extracting the noise part of the signal by using Fourier transform allows us to apply this method to obtain the fluctuation function and to estimate the generalized Hurst exponent together with the correlated Hurst exponent, its improvement for the non-Gaussian datasets. The results exhibit a strong presence of persistent behavior or strong anti-persistent behavior for the differences and the dataset is characterized by a non-Gaussian skewed distribution. There are also indications for the presence of the probability distribution that has heavier tail than the Gaussian distribution.

  20. Multiscaling behavior of atomic-scale friction

    Science.gov (United States)

    Jannesar, M.; Jamali, T.; Sadeghi, A.; Movahed, S. M. S.; Fesler, G.; Meyer, E.; Khoshnevisan, B.; Jafari, G. R.

    2017-06-01

    The scaling behavior of friction between rough surfaces is a well-known phenomenon. It might be asked whether such a scaling feature also exists for friction at an atomic scale despite the absence of roughness on atomically flat surfaces. Indeed, other types of fluctuations, e.g., thermal and instrumental fluctuations, become appreciable at this length scale and can lead to scaling behavior of the measured atomic-scale friction. We investigate this using the lateral force exerted on the tip of an atomic force microscope (AFM) when the tip is dragged over the clean NaCl (001) surface in ultra-high vacuum at room temperature. Here the focus is on the fluctuations of the lateral force profile rather than its saw-tooth trend; we first eliminate the trend using the singular value decomposition technique and then explore the scaling behavior of the detrended data, which contains only fluctuations, using the multifractal detrended fluctuation analysis. The results demonstrate a scaling behavior for the friction data ranging from 0.2 to 2 nm with the Hurst exponent H =0.61 ±0.02 at a 1 σ confidence interval. Moreover, the dependence of the generalized Hurst exponent, h (q ) , on the index variable q confirms the multifractal or multiscaling behavior of the nanofriction data. These results prove that fluctuation of nanofriction empirical data has a multifractal behavior which deviates from white noise.