5,566 research outputs found
Extremal asymmetric universal cloning machines
The trade-offs among various output fidelities of asymmetric universal
cloning machines are investigated. First we find out all the attainable optimal
output fidelities for the 1 to 3 asymmetric universal cloning machine and it
turns out that there are two kinds of extremal asymmetric cloning machines
which have to cooperate in order to achieve some of the optimal output
fidelities. Second we construct a family of extremal cloning machines that
includes the universal symmetric cloning machine as well as an asymmetric 1 to
cloning machine for qudits with two different output fidelities such that
the optimal trade-off between the measurement disturbance and state estimation
is attained in the limit of infinite .Comment: 4 pages 2 figure
Development and validation of the social emotional competence questionnaire (SECQ)
Reliable and valid measures of children’s and adolescents’ social emotional
competence (SEC) are necessary to develop in order to assess their social
emotional development and provide appropriate intervention in child and
adolescent development. A pool of 25 items was created for the Social
Emotional Competence Questionnaire (SECQ) that represented five dimensions
of SEC: self-awareness, social awareness, self-management, relationship
management and responsible decision-making. A series of four studies are
reported relating to the development and validation of the measure.
Confirmatory factor analyses of the responses of 444 fourth-graders showed an
acceptable fit of the model. The model was replicated with another 356
secondary school students. Additional studies revealed good internal
consistency. The significant correlations among the five SEC components and
academic performance provided evidence for the predictive validity of the
instrument. With multiple samples, these results showed that the scale holds
promise as a reliable, valid measure of SECpeer-reviewe
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