objective: personality is the most important infrastructure factor in addiction, and substance abusers have certain personal weaknesses that make them vulnerable to addiction. this study examined the role of sensation-seeking and coping strategies in predicting drug addiction in high school students.  methods: this study is a descriptive–correlational research. multi-stage cluster sampling was ...

The least-mean-squares (LMS) algorithm is the most popular algorithm in adaptive filtering. Several variable step-size strategies have been suggested to improve the performance of the LMS algorithm. These strategies enhance the performance of the algorithm but a major drawback is the complexity in the theoretical analysis of the resultant algorithms. Researchers use several assumptions to find ...

The main purpose of this study is to investigate effects of self-leadership strategies on staff creativity of government departments of Kabood Rahang region, Iran. This descriptive study has been correlative and applied in terms of nature. Statistical population of this study includes a number of employees of government departments of Kabood Rahang Province that are 800 members and 260 members ...

This paper presents an analysis of variable outputs in the speech of English-, Spanishand Catalanspeaking 2 year-olds, to evaluate the evidence for multiple targets. Temporal analysis shows syllable duration is determined by actual segmental composition, compatible with either multiple targets or a process of categorical deletion. However, spectral analysis suggests deletions may be ‘gradient’,...

in interventional or observational longitudinal studies, the issue of missing values is one of the main concepts that should be investigated. the researcher's main concerns are the impact of missing data on the final results of the study and the appropriate methods that missing values should be handled. regarding the role and the scale of the variable that missing values have been occurred and ...

introduction cri du chat syndrome is a rare genetic disorder due to deletion of variable length of short arm of chromosome 5(5p). it mainly presents with typical cat like cry, facial dysmorphism, poor growth with feeding problems and severe cognitive, speech, and motor delays. case report we present here a one year old child who did not presented with typical features but presented with recurre...

The deletion of chromosome 1p36 is a newly recognized, relatively common contiguous gene deletion syndrome with a variable phenotype. The clinical features have recently been delineated and molecular analysis indicates that the prevalence of certain phenotypic features appears to correlate with deletion size. Phenotype/genotype comparisons have allowed the assignment of certain clinical feature...