Personality traits and adaptive behavior are central issues in research on call center performance. However, the current literature offers little guidance on the relationship between personality traits and adaptive behavior and how they work together to enhance employee performance. This study investigates the mediating role of adaptive behavior between Five-Factor traits and employee performance with customers. Empirical evidence from a Canadian call center supports this proposition for three Five-Factor traits. Managerial implications are discussed.
A major challenge for analysis of data from
observational and survey studies is dealing with model mis-specification. A common reason for model
mis-specification is the violation of the independence assumption. Model mis-specification is frequently due to the
inclusion of variables that
are correlated with the error terms (serial correlation) or due to variables
omitted from the study. The application
of standard regression models to such data could lead to over inflated results, i.e. erroneous results, and misleading conclusions.
Longitudinally designed studies make substantial improvements and provide an additional handle to control omitted variables.
However, even with longitudinal data, model mis-specification could occur because of the
nature of observations, i.e. surveys
often include objectively as well as subjectively measured variables.
Subjective variables are respon
Magnetic Resonance Spectroscopy
(MRS) is nowadays considered as a main MRI investigation modality in the clinical
routine jointly with conventional anatomical and functional magnetic resonance imag-
ing for studying brain tumours. MRS provides complementary information about cellular
metabolism. This allows differentiating the brain tumours from abscess, the diagnosis
of the tumour type, characterization of brain tumours, as well as local study
of the morphological abnormalities observed in
conventional MRI. The MRS could be used in the therapeutic follow-up for
evaluating the pathological active area of brain, and allows optimizing the guided
biopsy as well as to differentiating recurrent
tumour from a necrosis.
In this paper, a new lifetime class with decreasing failure
rate is introduced by compounding truncated binomial distribution with
any proper continuous lifetime distribution. The properties of
the proposed class are discussed, including a formal proof of its probability
density function, distribution function and explicit algebraic formulae for its
reliability and failure rate functions. A simple EM-type algorithm for
iteratively computing maximum likelihood estimates is presented. The Fisher
information matrix is derived in order to obtain the asymptotic covariance
matrix. This new class of distributions generalizes several distributions which
have been introduced and studied in the literature.
The regular melting-quenching method allowed isolating
very large vitreous domains within the ternary system Li2O-P2O5-Fe2O3 at 1100. The vitrification and crystallization effects are discussed in terms
of phosphorus pentaoxide concentration (mol%). In the course of the present
study, we analyzed chemical durability along the glass domain and many sample
glasses were isolated. We noticed that our compounds demonstrated very high
chemical resistance to attack, even with very highly concentrated mineral acid
solutions. This behavior can be assigned to the presence of poorly crystalline
phases in these glasses, which tended to increase as the Fe2O3 content
increased. This property is a prerequisite for many interesting industrial
applications. XRD, IR spectroscopy and SEM micrographs allowed an efficient investigation
of the structural changes versus composition within ternary diagrams. The
results were found to be consistent with the regular structural changes of