the main objective of the present survey is to conduct a comparative analysis of the challenges of the performance evaluation system in two private and public sectors and their impact on effectiveness of human resources management practices. this survey was conducted using the field-descriptive method. the historical study method was used to collect theoretical subjects and the field study meth...

background: lead still remains an important problem for poor, inner-city, ethnic minority children, with a particular emphasis on lead paint and dust. in egypt, there is no national survey about the prevalence of elevated blood lead level among children. objective: to assess the environmental lead level as well as to determine blood lead level among primary school children and find out its rela...

The interactional feature of hypermedia that allows high-level student-control is considered as one of the most important advantages that hypermedia provides for learning and teaching. However, high-level student control in hypermedia might not always lead to high-level learning performance. The learner is likely to experience navigation problems such as disorien-tation, loss of concentration, ...

Predicting the effectiveness of user interfaces at the design stage has been extensively explored for the traditional computer workstation and the expert user. Various analytical tools, such as CogTools apply the Keystroke Level Model (KLM) approach to evaluate software designs for efficiency prior to development. The mobile platform presents additional input paths and resource constraints not ...

In this paper we propose a novel approach to deriving uncertainty model in reliability applications. It is based on a state space representation of the system life cycle which is similar to techniques widely used in the control theory (CT). Such a model in turn allows applying CT methods (e.g., optimal control algorithms) to assess the reliability in case of high level of uncertainty. In partic...

Research suggests that prosody can be used by speakers to convey a variety of information to listeners. The present study attempts to investigate how prosody might play a role in the construction of aegyo, a Korean term for a type of charming, cute behavior that may refer to both linguistic and nonlinguistic behavior. The focus of this study was the speech style which uses linguistic features s...