Background:Prenatal screening deals with the detection of structural and functional abnormalities in the fetus. Health care providers can minimize unintended pregnancy outcomes by providing proper counseling and performing prenatal screening. The purpose of the present review study is to investigate factors affecting improved prenatal screening.Methods:The present study is a narrative review searching public databases such as Google Scholar and specialized databases such as Pubmed, Magiran, Scientific Information Database, Elsevier, Ovid and Science Direct as well. Using the keywords “prenatal screening”, “fetus health” and “prenatal counseling”, 70 relevant articles published from 1994 to 2014 were selected. After reviewing the abstracts, the full data from 26 articles were ultimately used for writing the present review study.Results:Three general themes emerged from reviewing the studies: health care providers’ skills, clients’ characteristics and ethical considerations, which were the main factors affecting improved prenatal screening.Conclusion:Prenatal screening can be successful if performed by a trained and experienced expert through techniques suitable for the mother’s age. Also simultaneously providing proper counseling and giving a full description of the risks and benefits of the procedures for clients is recommended.

Computing grid are a set of unsymmetrical systems have provided a ground for sharing the computing resources. Regarding the facilities of grid and advantages of mobile agents and also the present problems reduction on distributed systems, the grid ground of "Alchemi" has been applied that is a low capacity system fixed with windows operating system.In this paper, changes have been made in Alchemi which has an open origin and the possibility Of inter thread communication and strong mobility added to it and then by using mobile agents in this system, the possibility of agent -based programming provided in it .Two main innovations of this paper are including: -Generating a strong excitation in NET environment.-Developing the possibility of parallel programming based on the agents over the grid.

Attention-deficit/hyperactivity disorder (ADHD) has several negative consequences. The purpose of the present study was to investigate the efficacy of cognitive rehabilitation on improving executive functions (planning and problem solving) in children with ADHD and symptoms of this disorder (attention deficit, hyperactivity /impulsivity). Materials and Methods: This is a quasi-experimental study. The statistical population of this study was children with ADHD aged 7-12 years who were referred to Armaghane Psychiatric Neurology Clinic, Shiraz, Iran. Thirty individuals were selected through purposive sampling and randomly divided into experimental and control groups (15 in each group). The experimental group underwent cognitive rehabilitation. All participants were assessed before and after the intervention using the Snape Scale and the Tower of London Test. Results: Analysis of pre-test and post-test data indicated that the experimental group had improvement in executive functions (planning and problem-solving) and attention deficit, as well as hyperactivity /impulsivity syndrome, compared to the control group. Conclusion: Designing and using cognitive rehabilitation programs for children with ADHD improve executive functions and consequently the symptoms of this disorder.r