BACKGROUND Central venous catheterization (CVC) is an important procedure in emergency departments (EDs). Despite existence of ultrasonography (US) devices in every ED, CVC is done using anatomical landmarks in many EDs in Iran. OBJECTIVES This study aimed to compare the traditional landmark method vs. US-guided method of CVC placement in terms of complications and success rate. PATIENTS AN...

Pursuit Reinforcement guided Competitive Learning: PRCL based on relatively fast online clustering that allows grouping the data in concern into several clusters when the number of data and distribution of data are varied of reinforcement guided competitive learning is proposed. One of applications of the proposed method is image portion retrievals from the relatively large scale of the images ...

The recent growth in personal multimedia communication devices being used for image transmission, have poised a challenge to protect such data against loss over mobile radio channels. This paper investigates several error protection schemes for robust transmission of JPEG2000 compressed imagery over mobile radio channels affected by various amounts of fading degradation. The nature of JPEG2000 ...

abstractwriting and speaking are the productive skills of a language and share similar components. however, there has been little attempt to investigate the impact of writing practice on the speaking proficiency of the learners. the present study using a pretest-posttest controlled group design in a quasi-experimental approach investigated the effect of guided writing practice on the speaking p...

case presentation in this report, ultrasound-guided sciatic nerve block was performed in a 25-year-old patient with tetanus to progress his respiratory drive which was decreased due to high dose sedative administration. this procedure accelerates the weaning process and extubation. introduction muscle rigidity and generalized spasm can cause severe pain in patients with tetanus. administration ...

Objective: to validate the content of an educational technology on rational use medicines for riverside Community Health Agents. Method: methodological research guided by Pasquali model validation and production final version manual. In data collection, two questionnaires were used expert judges. For analysis, Content Validation Index Suitability Assessment Materials Score used. Results: Global...

Background: Image-guided radiotherapy used multiple imaging during the radiation therapy course to improve the precision and accuracy of health care provider's treatment. Objectives: This study aims to assess the safety, effectiveness and economic aspects of image-guided radiation therapy for decision-making about this technology in Iran. Methods: In this study, the most important med...

Education in the United States is becoming increasingly standardized, with the standards being initiated at the national level and then trickling down to the state level and finally the local level. Yet, this top-down approach to educational standards carries with it significant limitations, such as loss of local autonomy and restrictions on the creativity of educational software designers. Thi...