Middleware Technologies for Cloud of Things - a survey

The next wave of communication and applications rely on the new services provided by Internet of Things which is becoming an important aspect in human and machines future. The IoT services are a key solution for providing smart environments in homes, buildings and cities. In the era of a massive number of connected things and objects with a high grow rate, several challenges have been raised such as management, aggregation and storage for big produced data. In order to tackle some of these issues, cloud computing emerged to IoT as Cloud of Things (CoT) which provides virtually unlimited cloud services to enhance the large scale IoT platforms. There are several factors to be considered in design and implementation of a CoT platform. One of the most important and challenging problems is the heterogeneity of different objects. This problem can be addressed by deploying suitable "Middleware". Middleware sits between things and applications that make a reliable platform for communication among things with different interfaces, operating systems, and architectures. The main aim of this paper is to study the middleware technologies for CoT. Toward this end, we first present the main features and characteristics of middlewares. Next we study different architecture styles and service domains. Then we presents several middlewares that are suitable for CoT based platforms and lastly a list of current challenges and issues in design of CoT based middlewares is discussed.Comment: http://www.sciencedirect.com/science/article/pii/S2352864817301268, Digital Communications and Networks, Elsevier (2017

Middleware Technologies for Cloud of Things - a survey

The next wave of communication and applications rely on the new services provided by Internet of Things which is becoming an important aspect in human and machines future. The IoT services are a key solution for providing smart environments in homes, buildings and cities. In the era of a massive number of connected things and objects with a high grow rate, several challenges have been raised such as management, aggregation and storage for big produced data. In order to tackle some of these issues, cloud computing emerged to IoT as Cloud of Things (CoT) which provides virtually unlimited cloud services to enhance the large scale IoT platforms. There are several factors to be considered in design and implementation of a CoT platform. One of the most important and challenging problems is the heterogeneity of different objects. This problem can be addressed by deploying suitable "Middleware". Middleware sits between things and applications that make a reliable platform for communication among things with different interfaces, operating systems, and architectures. The main aim of this paper is to study the middleware technologies for CoT. Toward this end, we first present the main features and characteristics of middlewares. Next we study different architecture styles and service domains. Then we presents several middlewares that are suitable for CoT based platforms and lastly a list of current challenges and issues in design of CoT based middlewares is discussed.Comment: http://www.sciencedirect.com/science/article/pii/S2352864817301268, Digital Communications and Networks, Elsevier (2017

Assessment the prevalence of high-risk human papillomavirus types 16 and 18 in 15 to 45 years old women

Background: Cervical cancer is the fourth most common cancer in incidence and the first genital cancer in women around the world, which 95% of them are related to human papillomavirus (HPV) infections. The risk of cervical cancer increases 10-12 time in women with HPV infection. This study aim to evaluate the prevalence of high-risk HPV infections among 15-45 years old women.Materials and Methods: This cross sectional study was carried out on 92 normal women who admitted at Semnan hygiene center and has 15-45 years old. Cervical samples were collected using Cytobrush cell collector and consequently DNA extraction was performed using commercial DNA extraction kit. Polymerase Chain Reaction (PCR) was done using HPV (GP5, GP6) universal primers accompanied by positive and negative control in each PCR run. In order to extracted DNA template quality control, actin gene used as housekeeping gene.Results: In this investigation, study subjects age range found to be 15-45 with mean of 30±0.9 years old. HPV infection was not found in patient group. Thus, further approach in order to HPV16 and HPV18 types detection, was not performed. However, other studies represented low to moderate prevalence for HPV in some regions of Iran.Conclusion: Cervical cancer is one the major health concern and the fourth most common cancer around the world. This cancer is more common in developing countries than developed countries due to lack of screening program. Regard to possible high prevalence rate of HPV virus and its association with cervical cancer, we suggest further determination of the HPV prevalence as well as planning in large-scale vaccination in high risk group

Nonsurgical Endodontic Treatment of a Maxillary Central Incisor with Two Separate Roots: A Case Report

The success of endodontic therapy requires knowledge of the internal and external dental anatomy and its variations in presentation. This case report involves endodontic treatment of a traumatized maxillary central incisor with two separate roots

The mediating role of academic self-efficacy in the relationship between personality traits and mathematics performance

AbstractConception of individual differences in learning mathematics is an important issue in educational psychology. The present research investigated the mediating role of academic self-efficacy in the relationship between the personality traits and mathematics performance. Participants were 367(girls,187 and boys,180) selected from pre-university in Shiraz. They completed the Goldberg's Personality traits Scale (1999) and & Greene et al.’ Academic Self-efficacy Scale (2004) and their mathematics’ score was used as a criterion of mathematics performance. The path diagram of hypothetical model was tested by simultaneous regression analysis. Results showed that the significant relationship between variables of research and also the mediating role of academic self-efficacy

The Frequency of Academic Burnout and Related Factors among Medical Students at Shahid Beheshti University of Medical Sciences, Tehran, in 2016

Abstract  Background: Academic burnout is the state of negative emotions and low motivation in one’s education. Understanding the status of academic burnout is the primary step to make proper decisions. The present study, therefore, was conducted to investigate comparative degrees of academic burnout among medical students in their first five semesters of medical education at Shahid Beheshti University of Medical Sciences, Tehran, Iran.  Methods: In the present cross-sectional study, a total of 525 medical students at the School of Medicine filled out the Persian version of Maslach Burnout Inventory – Student Survey from January 15 to February 5, 2016. Chi-square, Mantel-Haenszel, and Kruskal–Wallis tests were run in SPSS for data analysis. P-value<0.05 was considered significant.  Results: Based on the collected data, it was shown that 49.2% of the participants were male and 50.8% were female. Only 8 (1.5%) participants were married. No statistically significant difference was observed between the variables investigated and academic burnout (P>0.05). It was also observed that only four (0.8%) medical students (all new-comers) were in low academic burnout group and 521 (99.2%) were categorized in medium academic burnout group. Finally, it was found that academic burnout of the students increase as their educational level advance, making the first-semester students having the lowest and fifth-semester students the highest academic burnout indices (P<0.001).  Conclusion: It is concluded that, from among the variables studied, only students’ educational level made a difference in medical students’ academic burnout.Keywords: Academic efficacy; Burnout; Cynicism; Exhaustion; Medical Students