526 research outputs found

    Carol Ann Barry MC Cubbin rinde protesta como Doctora en Educación

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    La Doctora defiende su trabajo de investigación sobre: “La enseñanza de la oralidad en un Programa de Inmersión al español: el caso de una escuela primaria en Chula Vista, CA”, Carol Ann Barry MC Cubbin, rindió protesta como Doctora en Educación, la cual la realizó en CETYS Universidad.Durante el examen de grado que se celebró presencialmente en el Auditorio Corporación del Fuerte, del edificio de Posgrado en Campus Tijuana, la nueva doctora llevó a cabo la defensa de su trabajo de investigación al sínodo integrado por el Dr. David Ornelas Gutierrez, Coordinador del Doctorado en Educación del Sistema CETYS y Presidente del jurado Evaluador, la Dra. Mónica Inés Monsivais Almada, quien fungió como secretaria, así como la Dra. Patricia M. Maruca, como vocal.Carol Ann Barry MC Cubbin rinde protesta como Doctora en Educació

    m(b) at M-Z

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    The value of the Lr quark, mass at the M-Z scale defined in the <(MS)over bar> renormalization scheme, m(b)(M-Z), was determined using 2.8 million hadronic Z decays collected during 1992-1994 by the DELPHI detector to be m(b)(M-Z) = 2.67 +/- 0.25 (stat.) +/- 0.34 (frag.) +/- 0.27 (theo.) GeV/c(2). The analysis considers NLO corrections to the three-jet production rate including mass effects, and the result obtained agrees with the QCD prediction of having a running b quark mass at an energy scale equal to M-Z. This is the first time that such a measurement is performed far above the <b(b)over bar> production threshold. The study also verifies the flavour independence of the strong coupling constant for b and light quarks within 1% accuracy. (C) 1998 Elsevier Science B.V

    Regulatory Effectiveness and the Impact of Variations in Regulatory Governance: Electricity Industry Capacity and Efficiency in Developing Countries

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    This paper assesses for 28 developing countries over the period 1980-2001 whether the existence of a regulatory law and higher quality regulatory governance are significantly associated with superior electricity outcomes. The analysis draws on theoretical and empirical work on the impact of independent central banks and of developing country telecommunications regulators. The empirical analysis concludes that, controlling for other relevant variables and allowing for country specific fixed effects, a regulatory law and higher quality governance is positively and significantly associated with higher per capita generation capacity levels. In addition, this positive impact continues to increase for at least three years and probably for over 10 years as experience develops and regulatory reputation grows. The results are robust to alternative dynamic specifications, eg as estimates from alternative lag structures and for the application of an error correction model, and show no sign of any significant endogeneity biases.Regulatory Reform, Other Topics

    m(b) at M(Z)

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    The value of the bb quark mass at the MZM_Z scale defined in the MS\overline{MS} renormalization scheme, mb(MZ)m_b(M_Z), is determined using 2.8 million hadronic Z decays collected during 1992-1994 by the DELPHI detector to be, mb(MZ)=2.67±0.25 (stat.)±0.34 (frag.)±0.27 (theo.) GeV/c2. m_b(M_Z)=2.67 \pm 0.25\ ({\rm stat.}) \pm 0.34\ ({\rm frag.}) \pm 0.27\ ({\rm theo.}) \ {\rm GeV/c^2}. This analysis considers NLO corrections to the three-jet production rate including mass effects, and the result obtained agrees with the QCD prediction of having a running bb-quark mass at an energy scale equal to MZM_Z. This is the first time that such a measurement has been performed far above the bbb\overline{b} productio

    A standard European tank? Procurement politics, technology transfer and the challenges of collaborative MBT projects in the NATO alliance since 1945

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    International cooperation in weapons technology projects has long been a feature of alliance politics; and, there are many advantages to both international technology transfer and standardisation within military alliances. International collaboration between national defence industries has produced successful weapon systems from technologically advanced fighter aircraft to anti-tank missiles. Given the success of many joint defence projects, one unresolved question is why there have been no successful collaborative international main battle tank (MBT) projects since 1945. This thesis seeks to answer this question by considering four case studies of failed attempts to produce an MBT through an international collaborative tank project: first and second, the Franco-German efforts to produce a standard European tank, or Euro-Panzer (represented by two separate projects in 1957-63 and 1977-83); third, the US-German MBT-70 project (1963-70); and, fourth, the Anglo-German Future Main Battle Tank, or KPz3 (1971-77). In order to provide an explanation of the causes of failure on four separate occasions, the analysis includes reference to other high-technology civilian and military joint projects which either succeeded, or which cannot be classified as international MBT collaborative projects (such as the KNDS demonstration tank and the MBT-2000 developed by China and Pakistan). In addition to identifying the multiple causes of failure and providing an analysis of the most significant factor(s) in each case, it will be argued that the pattern which emerged during the Cold War does not necessarily provide an ‘absolute principle’ for future collaborative MBT projects: financial and other pressures may yet create conditions conducive to the completion of a successful collaborative MBT high-technology project. Future projects ought, however, to take note of the lessons from previous experience

    Consistent measurements of alpha(s) from precise oriented event shape distributions

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    An updated analysis using about 1.5 million events recorded at root s = M-Z with the DELPHI detector in 1994 is presented. Eighteen infrared and collinear safe event shape observables are measured as a function of the polar angle of the thrust. axis. The data are compared to theoretical calculations in O(alpha(s)(2)) including the event orientation. A combined fit of alpha(s) and of the renormalization scale x(mu) in O(alpha(s)(2)) yields an excellent description of the high statistics data. The weighted average from 18 observables including quark mass effects and correlations is alpha(s)(M- Z(2)) = 0.0026. The final result, derived from the jet cone energy fraction, the observable with the smallest theoretical and experimental uncertainty, is alpha(s)(M-Z(2)) = 0.1180 +/- 0.0006(exp.) +/- 0.0013(hadr.) +/- 0.0008(scale) +/- 0.0007(mass). Further studies include an alpha(s) determination using theoretical predictions in the next-to-leading log approximation (NLLA), matched NLLA and O(alpha(s)(2)) predictions as well as theoretically motivated optimized scale setting methods. The influence of higher order contributions was also investigated by using the method of Pade approximants. Average alpha(s) values derived from the different approaches are in good agreement

    Limits on the masses of supersymmetric particles at s**(1/2) = 189-GeV

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    Searches for charginos, neutralinos and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV have been used to set lower limits on the mass of the Lightest Supersymmetric Particle and other supersymmetric particles within the MSSM framework. R-parity conservation has been assumed. The lightest neutralino was found to be heavier than GeV/c(2) independent of the m(0) value. The Lightest chargino, the second-to-lightest neutralino, the next-to-heaviest neutralino, the heaviest neutralino, the sneutrino and the right-handed selectron were found to be heavier than 62.4 GeV/c2, 62.4 GeV/c(2), 99.9 GeV/c(2), 116.0 GeV/c(2), 61.0 GeV/c(2), and 87.0 GeV/c(2), respectively. These limits do not depend on m(0) or M-2 and are Valid for 1 less than or equal to tan beta less than or equal to 40, in the mu region where the lightest neutralino is the LSP. If the sneutrino is heavier than the chargino the lightest neutralino has to be heavier than 32.4 GeV/c(2). The effects of mixings in the third family of sfermions on these limits are discussed. The confidence level of all limits given is 95%
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