conclusions this is the first report on the prevalence of iron acquisition genes among a. baumannii isolates collected from patients with urinary tract infections. the high prevalence of iron acquisition genes in a. baumannii isolates suggests that these virulence factors play an important role in the development of urinary tract infections. results a high prevalence of genes encoding iron acqu...

Objective: In the present study, the effects of aqueous saffron extract (Crocus sativus L.) on the acquisition and reinstatement of morphine-induced conditioned place preference (CPP) in mice were investigated. Materials and Methods: Subcutaneous administration of morphine (40 mg/kg for four days) produced place preference. Intraperitoneal administration of aqueous extract (40 and 80 mg/kg for...

this study investigated the effectiveness of individual and collaborative outputbasedfocus-on-form instructional tasks on the acquisition of english inversionstructures by efl learners. moreover, it explored the developmental trend oflearners’ inversion acquisition. to this end, 60 homogeneous efl learners wereassigned to individual and collaborative output groups. they were exposed to textsenc...

wireless communication is the major form of connection nowadays. in most cases it exploits the benefits of the spread spectrum techniques to overcome channel introduced corruptions like doppler residual frequency, noise, interference and jamming. these techniques also enhance the security and quality of the link. using long spreading pseudo-noise codes provides further security for the link tho...

simultaneous with the industries increasing growth, thecompanies must acquire the new technologies to achieve the core competency,survival and improvement and also effectiveness in market. choosingthe suitable acquisition mode of required technology is one of thecritical strategic decisions in the field of technology management. dueto the importance of technology acquisition, the main objective...

Learning can be defined with the following general situation: we have a system – the learner – that has (wishes) to perform a certain task. At the beginning the performance is poor. With practice, by imitating the teacher or by trial and error, the performance gradually becomes better. “Better” may mean faster, more accurate, cheaper etc., depending on the task. Practising, imitating the teache...

There is ample evidence that human understanding of ordinary language relies in part on a rich capacity for imagistic mental modeling. We argue that genuine language understanding in machines will similarly require an imagistic modeling capacity enabling fast construction of instances of prototypical physical situations and events, whose participants are drawn from a wide variety of entity type...

In this paper, the authors replicated previous work demonstrating that animating mechanical systems leads to more efficient knowledge acquisition and extended it by applying the same processes to human systems. Based on these data, it appears that using static images, rather than animated human relationships within a team structure, better supports learning of procedural and conceptual knowledg...

This research is case study which was designed to investigate the acquisition of WH-question byPersian and English speaking children between 2 to 4 years old. Four girls and their input wereprecisely analyzed in order to figure how WH-questions are effective in their speaking in theirdaily lives. In the current study the subjects were randomly selected and the matter of gender wasnot considered...