Different calculation models

Xem 1-20 trên 25 kết quả Different calculation models
  • Monte-Carlo modeling allows calculating the detector efficiency in gamma spectrometry of environmental samples with taking into consideration both the photon selfabsorption in sample itself and absorption in all other materials between the sample and the detector’s active part. In this paper, the peak efficiencies of the Hp Ge detector (GMX) for gammas at various energies (emitted isotropically from the standard disk source and volumetric source - environmental sample, in which the different radionuclides are present) ...

    pdf6p tuanlocmuido 19-12-2012 19 4   Download

  • This paper shows how to formally characterize language learning in a finite parameter space as a Markov structure, hnportant new language learning results follow directly: explicitly calculated sample complexity learning times under different input distribution assumptions (including CHILDES database language input) and learning regimes. We also briefly describe a new way to formally model (rapid) diachronic syntax change.

    pdf10p bunmoc_1 20-04-2013 18 2   Download

  • (BQ) The modelling of ECM and EDM processes requires not one but several models to simulate the different phenomena that occur during machining. This paper reviews the models that have been developed to simulate each of these phenomena, e.g. potential models to calculate the current density distribution in ECM, thermal models for the plasma arc in EDM, moving boundary models to simulate the anodic dissolution in ECM and probabilistic models to determine the discharge location in EDM.

    pdf23p xuanphuongdhts 27-03-2017 2 1   Download

  • (BQ)In this paper a new contribution to the simulation and modelling of the EDM process is presented. Temperature fields within the workpiece generated by the superposition of multiple discharges, as it happens during an actual EDM operation, are numerically calculated using a finite difference schema. The characteristics of the discharge for a given operation, namely energy transferred onto the workpiece, diameter of the discharge channel and material removal efficiency can be estimated using inverse identification from the results of the numerical model.

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  • When damage is identified with an index, it is difficult exactly match the index with the repair of damage. Therefore, the method is considered difficult to apply them to check the seismic risk based on definition of the changes in the process of damage and other details due to differences in design. To reach this goal, it is first necessary to calculate the design solution reflects the damage and the collapse of a structure under a uniform standard values ​​for different seismic forces....

    pdf358p lulanphuong 24-03-2012 42 6   Download

  • LYAPUNOV FUNCTIONALS CONSTRUCTION FOR STOCHASTIC DIFFERENCE SECOND-KIND VOLTERRA EQUATIONS WITH CONTINUOUS TIME LEONID SHAIKHET Received 4 August 2003 The general method of Lyapunov functionals construction which was developed during the last decade for stability investigation of stochastic differential equations with aftereffect and stochastic difference equations is considered.

    pdf25p sting12 10-03-2012 20 5   Download

  • We employ three different measures of performance: return on equity (ROE) which is defined as earnings before interest and tax (EBIT) divided by book value of shareholders‟ equity; return on sales (ROS), calculated as EBIT divided by total turnover; and Tobin‟s Q. 3 The latter indicator is calculated as the ratio of the firm‟s market capitalization to book value of equity. 4 We analyse the effect of IED using two definitions of variable IEit. First, we employ a dummy variable which takes the value of 1 if at least one non-executive director is also...

    pdf42p thamgiacongdong 02-05-2013 19 3   Download

  • This text is written to all chemical engineering students who are participating in courses about membrane processes and membrane technology. You are supposed to have the basic skills in mathematics and chemistry in general. Thus, this text is for students who have completed the basic engineering introduction courses. This text gives an introduction to principles behind pressure driven membrane processes. Relevant theory and models will be presented together with terms widely used in the world of membrane technology. ...

    pdf22p tuanloc_do 04-12-2012 24 2   Download

  • A large number of proteins, found experimentally to have different optimum pH of maximal stability, were studied to reveal the basic principles of their preferenence for a par-ticular pH. The pH-dependent free energy of folding was modeled numerically as a function of pH as well as the net charge of the protein. The optimum pH was determined in the numerical calculations as the pH of the minimum free energy of folding. The experimental data for the pH of maximal stability (experimental optimum pH) was repro-ducible (rmsd¼0.73)....

    pdf13p dell39 03-04-2013 13 2   Download

  • The limited capacity of working memory is intrinsic to human sentence processing, and therefore must be addressed by any theory of human sentence processing. This paper gives a theory of garden-path effects and processing overload that is based on simple assumptions about human short term memory capacity. hypothesis, is easily compatible with the above view of processing load calculation: given a choice between two different representations for the same input string, simply choose the representation that is associated with the lower processing load. ...

    pdf8p bungio_1 03-05-2013 17 2   Download

  • In this paper, a word alignment approach is presented which is based on a combination of clues. Word alignment clues indicate associations between words and phrases. They can be based on features such as frequency, part-of-speech, phrase type, and the actual wordform strings. Clues can be found by calculating similarity measures or learned from word aligned data. The clue alignment approach, which is proposed in this paper, makes it possible to combine association clues taking different kinds of linguistic information into account. ...

    pdf8p bunthai_1 06-05-2013 22 2   Download

  • This paper presents PARADISE (PARAdigm for Dialogue System Evaluation), a general framework for evaluating spoken dialogue agents. The framework decouples task requirements from an agent's dialogue behaviors, supports comparisons among dialogue strategies, enables the calculation of performance over subdialogues and whole dialogues, specifies the relative contribution of various factors to performance, and makes it possible to compare agents performing different tasks by normalizing for task complexity. ...

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  • The topic of the paper is the problem how to define case relations by semantic predicates. A general principle is outlined, which renders it possible to "calculate" case relations for a given representation of a (verb-)sememe by means of expressions. This principle is based on an assignment of case relations to primitive predicates and modification rules for nested expressions.

    pdf4p buncha_1 08-05-2013 17 2   Download

  • As human choriocarcinoma cells display many of the biochemical and morphological characteristics reported for in utero invasive trophoblast cells we have studied cho-lesterol supply from high density lipoproteins (HDL) to these cells.Binding properties of 125 I-labeled HDL sub-class 3 (HDL3)at4C were similar for BeWo, JAr, and Jeg3 choriocarcinoma cell lines while degradation rates at 37C were highest for BeWo.

    pdf12p tumor12 20-04-2013 8 1   Download

  • The main reason for this lack of statistical significance is the large standard deviation of daily returns, about 1 percent, which swamps in magnitude the difference in returns. We also investigate whether the identified difference in returns between new moon and full moon windows is persistent. As a measure of persistence, we calculate the percentage of years in which mean new moon daily returns are higher than mean full moon returns. For the DJIA, this number is 56.3 percent, which is moderately above the 50 percent that would be expected by chance.

    pdf36p bocapchetnguoi 06-12-2012 22 0   Download

  • Chapter 7 - Measuring domestic output and national income. We will be calculating how economists estimate a country’s output and income for a year. The importance of these figures will be discussed, as well as the differences between the various ways that we can measure income. Lastly we will discuss how we can adjust the figures that we have calculated for inflation effects and analyze some of the issues associated with the various accounts.

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  • In March 1997 the Bank started conducting daily money market operations in gilt repo. Since this date we have used GC repo data to estimate the short end of the nominal yield curve, and so the short end of the nominal curve is provided down to very short maturities after this date. No corresponding instrument is available to help model the short end of the real yield curve.

    pdf20p taisaocothedung 09-01-2013 33 7   Download

  • Policy-relevant background – This is an estimate based on air pollution models of the natural background ozone concentrations that would exist without sources of air pollution from human activity, and therefore cannot be affected by emissions control efforts (Fiore 2004).

    pdf40p saimatkhauroi 01-02-2013 20 6   Download

  • When companies calculate their breakeven points, they often come at it from the perspective of how much revenue they require to cover their expenses: “If we don’t sell $2 million worth of widgets this year, we’ll face a shortfall and we’ll need to downsize.” Similarly, a hedge fund manager may ask: “What level of assets and performance do I need to cover my expenses?” However, the hedge fund business model allows for a different approach.

    pdf28p quaivatdo 18-11-2012 21 3   Download

  • In developing the school travel model, we eliminated the 217 students who live outside of their school district boundary or are missing variable information, yielding a sample of 1216 used for model development.We calculated distance to school as the shortest road network travel distance, using ArcGIS v.9.2. We weighted the travel survey sample against the Census 2000 population residing in the school district, accounting for differences in race and income (MetroGIS DataFinder, 2009).

    pdf5p nhacnenzingme 23-03-2013 24 3   Download

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