BACKGROUND Cerium dioxide (CeO(2)) nanoparticles have potential therapeutic applications and are widely used for industrial purposes. However, the effects of these nanoparticles on primary human cells are largely unknown. The ability of nanoparticles to exacerbate pre-existing inflammatory disorders is not well documented for engineered nanoparticles, and is certainly lacking for CeO(2) nanopar...

in the wake of the global financial crisis. Recent indignation over seemingly exorbitant CEO compensation in the face of poor company performance have given rise to the question: Does CEO pay accurately reflect CEO ability? If so, does the CEO make a difference to company performance? Practitioners intuitively know the importance of top CEOs, however does academic research concur? Despite its e...

This study was conducted to determine the effects of adding ethanol extract of propolis (EEP) and cumin essential oil (CEO) to diets of broiler chicks on the performance, blood parameters, immune response and carcass traits. A total of 240 day-old Ross-308 broiler chicks were randomly allocated to four treatments with six replicates and 10 birds in each replicate in a completely randomized desi...

Background: Chamomile essential oil (CEO) hauls out from Matricaria chamomilla L., is a well-known anti-oxidant. Oxidative stress induces clastogenic and biochemical disorders after γ-irradiation of animals. Materials and Methods: Mice were divided into five groups. Control group received vehicle only.              &nbs...

Does CEO duality – the practice of one person serving both as a firm’s CEO and board chair – contribute to or inhibit firm performance? Agency theory suggests that CEO duality is bad for performance because it compromises the monitoring and control of the CEO. Stewardship theory, in contrast, argues that CEO duality may be good for performance due to the unity of command it presents. The empiri...

this study was conducted to determine the effects of adding ethanol extract of propolis (eep) and cumin essential oil (ceo) to diets of broiler chicks on the performance, blood parameters, immune response and carcass traits. a total of 240 day-old ross-308 broiler chicks were randomly allocated to four treatments with six replicates and 10 birds in each replicate in a completely randomized desi...

The tendency to underestimate others’ relative performance compared to one’s own is widespread among individuals in all work environments. We examine the relationship between, and the driving forces behind, individual overconfidence and voluntary cooperation in team production. Our experimental data suggest an indirect and gender-specific link: Overconfident men hold more optimistic beliefs abo...

DEALING WITH ENTREPRENEURIAL UNCERTAINTY: DO CURRENT MEASURES OF OVERCONFIDENCE TELL THE WHOLE STORY? Researchers have been studying entrepreneurial cognitive biases in making decisions under uncertainty for some time. This paper reviews the overconfidence bias and the main methodology used to examine it, calibration of probabilities, concluding there may be weaknesses in using this method. An ...

Barber and Odean (2000) study the relationship between trading frequency and returns. They find that households who trade more frequently have a lower net return than other households. But all households have about the same gross return. They argue that these results cannot emerge from a model with rational traders and instead attribute these findings to overconfidence. Using a dynamic optimiza...

A Model of Overconfidence People use information about their ability to choose tasks. If more challenging tasks provide more accurate information about ability, people who care about and who are risk averse over their perception of their own ability will choose tasks that are not sufficiently challenging. Overestimation of ability raises utility by deluding people into believing that they are m...