19,030 research outputs found
Control mechanisms and perceived organizational support: exploring the relationship between new and traditional forms of control
Purpose: Taking into account the need to make a clearer distinction between traditional and new organizational controls, this paper aims to investigate similarities and differences between those two forms and explore the extent to which new forms of control can be operationalized from a quantitative point of view. Design/methodology/approach: Suggesting that new organizational controls can be understood also in light of quantitative paradigms, we develop and test a scale to measure the existence of these types of controls, examine its construct validity and evaluate its convergent validity. Findings: The theoretical dimensions of new controls have empirical correspondence. Input and behaviour controls are strongly associated with the promotion of values and beliefs in organizations. New controls become responsible for employeesâ acceptance of companiesâ management, an aspect measured by Perceived-Organizational-Support (POS)
Nonelastic nuclear reactions induced by light ions with the BRIEFF code
The intranuclear cascade (INC) code BRIC has been extended to compute nonelastic reactions induced by light ions on target nuclei. In our approach the nucleons of the incident light ion move freely inside the mean potential of the ion in its center-of-mass frame while the center-of-mass of the ion obeys to equations of motion dependant on the mean nuclear+Coulomb potential of the target nucleus. After transformation of the positions and momenta of the nucleons of the ion into the target nucleus frame, the collision term between the nucleons of the target and of the ion is computed taking into account the partial or total breakup of the ion. For reactions induced by low binding energy systems like deuteron, the Coulomb breakup of the ion at the surface of the target nucleus is an important feature. Preliminary results of nucleon production in light ion induced reactions are presented and discussed
Study of the effect of pH, salinity and DOC on fluorescence of synthetic mixtures of freshwater and marine salts
In order to provide support for the discussion of the fate of organic matter in estuaries, a laboratory simulation was
performed by changing freshwater ionic strength, pH and organic matter content. The change in spectroscopic
characteristics caused by variations in salinity, pH and organic matter concentration in the filtered samples was
observed by UV-Vis and fluorescence spectroscopy. The increase in emission fluorescence intensity of dissolved
organic matter (DOM) due to increasing salinity (in the range 0 to 5 g lâ1) is affected by the pH of the samples. The
emission fluorescence intensity at the three maxima observed in the fluorescence spectra, is linearly correlated with
dissolved organic carbon (DOC) concentration at several salinity values in the same sample. The increase in organic
matter concentration caused a shift in the emission peak wavelength at 410 nm for several salinity values.We
concluded that it is necessary to take into account the influence of salinity and pH on emission fluorescence of
dissolved organic matter if it is to be used as a tracer in estuarine or near shore areas
A unification in the theory of linearization of second order nonlinear ordinary differential equations
In this letter, we introduce a new generalized linearizing transformation
(GLT) for second order nonlinear ordinary differential equations (SNODEs). The
well known invertible point (IPT) and non-point transformations (NPT) can be
derived as sub-cases of the GLT. A wider class of nonlinear ODEs that cannot be
linearized through NPT and IPT can be linearized by this GLT. We also
illustrate how to construct GLTs and to identify the form of the linearizable
equations and propose a procedure to derive the general solution from this GLT
for the SNODEs. We demonstrate the theory with two examples which are of
contemporary interest.Comment: 8 page
A Method to Tackle First Order Differential Equations with Liouvillian Functions in the Solution - II
We present a semi-decision procedure to tackle first order differential
equations, with Liouvillian functions in the solution (LFOODEs). As in the case
of the Prelle-Singer procedure, this method is based on the knowledge of the
integrating factor structure.Comment: 11 pages, late
Multiscale Partition of Unity
We introduce a new Partition of Unity Method for the numerical homogenization
of elliptic partial differential equations with arbitrarily rough coefficients.
We do not restrict to a particular ansatz space or the existence of a finite
element mesh. The method modifies a given partition of unity such that optimal
convergence is achieved independent of oscillation or discontinuities of the
diffusion coefficient. The modification is based on an orthogonal decomposition
of the solution space while preserving the partition of unity property. This
precomputation involves the solution of independent problems on local
subdomains of selectable size. We deduce quantitative error estimates for the
method that account for the chosen amount of localization. Numerical
experiments illustrate the high approximation properties even for 'cheap'
parameter choices.Comment: Proceedings for Seventh International Workshop on Meshfree Methods
for Partial Differential Equations, 18 pages, 3 figure
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