601 research outputs found

    Common Errors in Speaking of English-Majored Sophomores at Tay do University, in Vietnam

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    It is undeniable that speaking skill is very important in learning English It is a tool to help students to find good jobs in the future especially if they expect to work for a foreign company However in the process of learning and practicing speaking English students get a lot of difficulties Therefore the research Common Errors in Speaking of English-Majored Sophomores at Tay Do University Vietnam was conducted to investigate common mistakes of English-majored sophomores from English classes course 14 at Tay Do University The questionnaire and interview were two main instruments Research results showed that Englishmajored sophomores made some common errors about pronunciation vocabulary and grammar It is hoped that sophomores can recognize and correct their errors to make the necessary changes to improve speaking skill

    Mapping and conceptualizing the measurement of organizational social value using systems thinking

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    Studies about social value have been devoted to issues or phenomena, projects, or activities of organizations but none have evaluated the organizational social value as oppose to economic value. Our question is: in the field of business and economics, how has organizational social value been scholarly or academically analyzed? By performing a systematic literature review of articles, and using scientometric analysis of 45 articles. 34 out of the 45 articles were mapped into the extended systems thinking: input, process, output and environment (IPOE) framework. Our results indicate that: a) input and environment dimensions have been most researched while process and output have been least researched; b) applicability of the IPOE framework as a mapping tool for organizational social value but requires further confirmation; and c) social value creation nonprofit, hybrid and for-profit organizations may be linked together. Our research would be helpful for organizations interested in measuring their social value.Coherent privaatrech

    An Examination of the Practicability of COBIT Framework and the Proposal of a COBIT-BSC Model

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    Control Objectives for Information and Related Technology (COBIT) becomes very popular in recent years and is regarded as the most comprehensive IT governance framework. However, its actual utilization and effectiveness are not clear due to the lack of academic studies. Also, the proliferation of other IT standards and best practices, such as ISO27000 series and ITIL, creates great challenges for organizations to understand their relations and to take advantage of them. The main objective of this research is to explore the practicability of COBIT framework and its actual usage. A pilot COBIT program within an IT department was carried out to collect primary data. The actual usage of COBIT tools is analyzed and compared to their theoretical design. Practical problems of COBIT framework are identified. A COBIT-BSC model is proposed to illustrate a simple way of structuring COBIT control objectives. This study will contribute some practical insights to COBIT framework and help organizations take advantage of COBIT as well as other IT control frameworks.Algorithms and the Foundations of Software technolog

    Une formulation variationnelle du problème de contact avec frottement de Coulomb

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    International audienceA variational relationship is proposed as the weak form of the large deformation contact problem with Coulomb friction. It is a mixed relationship involving both the displacements and the multipliers; the weighting functions are the virtual displacements and the virtual multipliers. It is shown that the proposed weak form is equivalent to the strong form of the initial/boundary value contact problem and the multipliers are equal to the contact tractions.Dans ce travail, on propose une formulation variationnelle du problème de contact en grandes transformations avec frottement de Coulomb. Il s'agit d'une formulation mixte où les champs inconnus sont à la fois le champ des déplacements et le champ des multiplicateurs, et où les fonctions poids sont le champ des déplacements virtuels et le champ des multiplicateurs virtuels. On montre que le problème faible proposé équivaut bien au problème fort de contact et que les multiplicateurs sont égaux aux contraintes de contact

    Study on N-NH4+ removal from underground water by MBBR case study in Bach Khoa Ward, Hanoi, Vietnam

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    Moving bed biofilm reactor (MBBR) using porous carrier plastic material, Polyurethane (DHY-1) which has high porosity 92% -96%, has been researched and applied in many water treatment systems. The advantage of the material is that it has high surface area of about 6,000-12,000m2/m3 thereby increasing the density of biomass. In this research, they were tried to treat ammonium nitrogen (N-NH4+) in the ground water. It was found that the treatment efficiency was more than 90% with N-NH4+ concentration of 10-12mg/l. Different densities of carrier materials as well as different influent flow rates have significant impacts on the removal efficiency. The study showed that treatment capacity decreased with high influent flow rate while increased with high density of carrier materials

    T2D: Generating Dialogues Between Virtual Agents Automatically from Text

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    The Text2Dialogue (T2D) system that we are developing allows digital content creators to generate attractive multi-modal dialogues presented by two virtual agents–by simply providing textual information as input. We use Rhetorical Structure Theory (RST) to decompose text into segments and to identify rhetorical discourse relations between them. These are then 'acted out' by two 3D agents using synthetic speech and appropriate conversational gestures. In this paper, we present version 1.0 of the T2D system and focus on the novel technique that it uses for mapping rhetorical relations to question–answer pairs, thus transforming (monological) text into a form that supports dialogues between virtual agents

    Deformation change in light iridium nuclei from laser spectroscopy

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    Laser spectroscopy measurements have been performed on neutron-deficient and stable Ir isotopes using the COMPLIS experimental setup installed at ISOLDE-CERN. The radioactive Ir atoms were obtained from successive decays of a mass-separated Hg beam deposited onto a carbon substrate after deceleration to 1kV and subsequently laser desorbed. A three-color, two-step resonant scheme was used to selectively ionize the desorbed Ir atoms. The hyperfine structure (HFS) and isotope shift (IS) of the first transition of the ionization path 5d^{7}6s ^{2}^{4}F_{9/2} \to 5d^{7}6s6p ^{6}F_{11/2} at 351.5nm were measured for 182189^{182-189}Ir, 186Irm^{186}Ir^{m} and the stable 191,193^{191,193}Ir. The nuclear magnetic moments μI and the spectroscopic quadrupole moments Qs were obtained from the HFS spectra and the change of the mean square charge radii from the IS measurements. The sign of μI was experimentally determined for the first time for the masses 182≤A≤189 and the isomeric state 186Irm^{186}Ir^ m . The spectroscopic quadrupole moments of 182^{182}Ir and 183^{183}Ir were measured also for the first time. A large mean square charge radius change between 187^{187}Ir and 186Irg^{186}Ir^g and between 186Irm^{186}Ir^m and 186Irg^{186}Ir ^g was observed corresponding to a sudden increase in deformation: from β2 ≃ + 0.16 for the heavier group A = 193, 191, 189, 187 and 186m to β2 ≥ + 0.2 for the lighter group A = 186g, 185, 184, 183 and 182. These results were analyzed in the framework of a microscopic treatment of an axial rotor plus one or two quasiparticle(s). This sudden deformation change is associated with a change in the proton state that describes the odd-nuclei ground state or that participates in the coupling with the neutron in the odd-odd nuclei. This state is identified with the π3/2+[402] orbital for the heavier group and with the π1/2-[541] orbital stemming from the 1h _9/2 spherical subshell for the lighter group. That last state seems to affect strongly the observed values of the nuclear moments

    Towards Machine Wald

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    The past century has seen a steady increase in the need of estimating and predicting complex systems and making (possibly critical) decisions with limited information. Although computers have made possible the numerical evaluation of sophisticated statistical models, these models are still designed \emph{by humans} because there is currently no known recipe or algorithm for dividing the design of a statistical model into a sequence of arithmetic operations. Indeed enabling computers to \emph{think} as \emph{humans} have the ability to do when faced with uncertainty is challenging in several major ways: (1) Finding optimal statistical models remains to be formulated as a well posed problem when information on the system of interest is incomplete and comes in the form of a complex combination of sample data, partial knowledge of constitutive relations and a limited description of the distribution of input random variables. (2) The space of admissible scenarios along with the space of relevant information, assumptions, and/or beliefs, tend to be infinite dimensional, whereas calculus on a computer is necessarily discrete and finite. With this purpose, this paper explores the foundations of a rigorous framework for the scientific computation of optimal statistical estimators/models and reviews their connections with Decision Theory, Machine Learning, Bayesian Inference, Stochastic Optimization, Robust Optimization, Optimal Uncertainty Quantification and Information Based Complexity.Comment: 37 page
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