The teaching of writing has recently begun to move away from a concentration on the written product to an emphasis on the process of writing. Feedback is a fundamental element of the process approach to writing. It can be defined as input from a reader to a writer with the effect of providing information to the writer for a revision. This study reports on the effectiveness of two types of feedb...

There is a general consensus about the lack of usability in most open source software (OSS). Academics and practitioners have offered several suggestions to improve the usability of such software. However, a realistic assessment of OSS projects, specifically the motivations of OSS developers and their attitude toward software usability, lack of user feedback, and absence of usability experts in...

Position and attitude set-point regulation of autonomous underwater vehicles (AUVs) in 6 degrees of freedom (DOF) is presented. Euler parameters are used in the representation of global attitude. Three quaternion feedback controllers are derived based on vector quaternion, Euler rotation and Rodrigues parameter feedback, respectively. Global asymp-totic stability is proven in the rst and second...

A hybrid control scheme for vibration reduction of flexible spacecraft during rotational maneuvers is investigated by using variable structure output feedback control (VSOFC) for attitude control and smart materials for active vibration suppression. The proposed control design process is twofold: design of the attitude controller using VSOFC theory acting on the hub and design of an independent...

the successful adoption of e-learning systems is mainly dependent on the learners’ attitude and willingness to use them. this survey was conducted to investigate agricultural extension workers’ attitudes toward using e-learning for on-the-job training in iran and factors which affect it. using the stratified sampling technique a sample of 379 extension workers were selected from six provinces. ...

This communication describes our initial experience modifying traditional (written and calculation-based) assignments in the surface colloid chemistry course given as a part of chemical engineering program. The new exercises contain more relatable context that is easier to understand remember terms future challenges student’s professional career. These modified deepen level exercise by adding w...

results the single covariance analysis of ancova indicated that the value of eta about 72% of variance of anxiety variable and about 76% of variance of drug abuse variable are taken in to account for variable of group. the intervention was effective in reducing anxiety and attitude to crack in males. evaluating the adjusted mean showed the effectiveness of matrix method on anxiety and attitude ...

introduction: breast milk is a complete food for growing children until 6 months of age, and mothers, as the most important child health care, play a decisive role in their growth. so promoting  their attitude toward the benefits of breastfeeding ensures guarantee child health in the future. this study aimed to assess maternal knowledge and attitude of mashhad toward exclusive bmf in the first ...