119 research outputs found

    Survey and comparison of the management factors affecting teaching-learning process in smart and ordinary schools of Bojnourd

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    The purpose of this paper is comparing the role of Principal on teaching - learning process in ordinary and smart schools of Bojnurd (the center of north-eastern province of Iran). This type of survey and the questionnaire as a data collection tool is a cross-sectional study. This study was based upon descriptive-measuring model and due to its objective was categorized as functional research group. The population of the study included the Principals, men and women of middle school and high schools in Bojnourd during Spring-2013. Cochran's formula was used for determining the sample size and the stratified random sampling method was used. It was found that the reliability obtained was high. The data were analyzed using descriptive statistics for the analytical tests such as correlation analysis, analysis of variance and Tukey test. The statistical analyses used are SPSS and Microsoft Excel. The results of this study indicated that technology is a tool and efficient application of any technology kinds comes from thought, culture and social relations deeply

    Survey and comparison of the management factors affecting teaching-learning process in smart and ordinary schools of Bojnourd

    Get PDF
    The purpose of this paper is comparing the role of Principal on teaching - learning process in ordinary and smart schools of Bojnurd (the center of north-eastern province of Iran). This type of survey and the questionnaire as a data collection tool is a cross-sectional study. This study was based upon descriptive-measuring model and due to its objective was categorized as functional research group. The population of the study included the Principals, men and women of middle school and high schools in Bojnourd during Spring-2013. Cochran's formula was used for determining the sample size and the stratified random sampling method was used. It was found that the reliability obtained was high. The data were analyzed using descriptive statistics for the analytical tests such as correlation analysis, analysis of variance and Tukey test. The statistical analyses used are SPSS and Microsoft Excel. The results of this study indicated that technology is a tool and efficient application of any technology kinds comes from thought, culture and social relations deeply

    First Report of Intestinal Myiasis Due To Eristalis tenax in Iran

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    Eristalis tenax, belonging to order Diptera, family Syrphidae seldomly causes intestinal myiasis. Intestinal myiasis caused by E. tenax larvae is a rare manifestation found in both humans and other vertebrate animals. We report a 22-year-old woman presented with this myiasis. The larva in her stool sample was identified as E. tenax related to its typical morphology and authentic clues. Lack of specific control measures in the domestic water supply system was the most probable cause of this infestation

    A tutorial introduction to CryptHOL

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    This tutorial demonstrates how cryptographic security notions, constructions, and game-based security proofs can be formalized using the CryptHOL framework. As a running example, we formalize a variant of the hash-based ElGamal encryption scheme and its IND-CPA security in the random oracle model. This tutorial assumes familiarity with Isabelle/HOL basics and standard cryptographic terminology

    Neuromorphic Seatbelt State Detection for In-Cabin Monitoring with Event Cameras

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    Neuromorphic vision sensors, or event cameras, differ from conventional cameras in that they do not capture images at a specified rate. Instead, they asynchronously log local brightness changes at each pixel. As a result, event cameras only record changes in a given scene, and do so with very high temporal resolution, high dynamic range, and low power requirements. Recent research has demonstrated how these characteristics make event cameras extremely practical sensors in driver monitoring systems (DMS), enabling the tracking of high-speed eye motion and blinks. This research provides a proof of concept to expand event-based DMS techniques to include seatbelt state detection. Using an event simulator, a dataset of 108,691 synthetic neuromorphic frames of car occupants was generated from a near-infrared (NIR) dataset, and split into training, validation, and test sets for a seatbelt state detection algorithm based on a recurrent convolutional neural network (CNN). In addition, a smaller set of real event data was collected and reserved for testing. In a binary classification task, the fastened/unfastened frames were identified with an F1 score of 0.989 and 0.944 on the simulated and real test sets respectively. When the problem extended to also classify the action of fastening/unfastening the seatbelt, respective F1 scores of 0.964 and 0.846 were achieved.Comment: 4 pages, 3 figures, IMVIP 202

    On the Existence of the Logarithmic Correction Term in Black Hole Entropy-Area Relation

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    In this paper we consider a model universe with large extra dimensions to obtain a modified black hole entropy-area relation. We use the generalized uncertainty principle to find a relation between the number of spacetime dimensions and the presence or vanishing of logarithmic prefactor in the black hole entropy-area relation. Our calculations are restricted to the microcanonical ensembles and we show that in the modified entropy-area relation, the microcanonical logarithmic prefactor appears only when spacetime has an even number of dimensions.Comment: 9 Pages, No Figure

    Investigation of LRTOMT gene (locus DFNB63) mutations in Iranian patients with autosomal recessive non-syndromic hearing loss.

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    Hearing loss (HL) is the most frequent sensory defect affecting 1 in 1000 neonates. This can occur due to genetic or environmental causes or both. The genetic causes are very heterogenous and over 100 loci have been identified to cause autosomal recessive non - syndromic hearing loss (ARNSHL). The aim of this study was to determine the contribution of the LRTOMT gene mutations in causing ARNSHL. One hundred fifty seven pupils affected with ARNSHL from Azarbaijan Sharghi, Kordestan, Gilan and Golestan provinces, north and west of Iran, were ascertained. In this descriptive - laboratory study, the presence of LRTOMT mutations were initially checked using PCR - Single - strand conformation polymorphism (SSCP) and heteroduplex analysis (HA) strategy. Samples with shifted bands on the gel were confirmed by DNA sequencing method. The PCR-SSCP/HA and the subsequent direct DNA sequencing showed no mutation in the population studied. We conclude that LRTOMT mutations have no role in causing sporadic deafness in the studied population. Further studies on other populations and samples could clarify the exact role of LRTOMT mutations

    Evaluation of the effect of handheld mobile phone use on activity of the parotid glands amylase enzyme

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    Introduction: Alpha amylase is the most abundant enzyme of parotid gland. This enzyme starts digestion of carbohydrates in the mouth. A pair of parotid glands is located in front of ears. Several studies have been conducted on the effects of mobile phones on the parotid gland. The aim of this study was to investigate the effects of mobile phones on the activity of the amylase enzyme. Materials &Methods: Totally, 251 men and women aged 18 to 55 years, who only used Hamrahe Aval's operator were included. Parotid salivary samples of each individual were bilaterally collected using capillary tube placed in the vicinity of Stensen's duct. Bilateral amylase activity of each individual was evaluated with spectrophotometric method in the laboratory considering dominant sides of phone conversation and chewing. Data were analyzed using Two-way ANOVA, χ2, T test and SPSS software. Results: The relationship between the dominant phone conversation side and parotid amylase activity was not statistically significant but the correlation between prevailing chewing side and amylase activity was statistically significant (p=0.001). Conclusion: Handheld mobile phone was not effective on parotid amylase enzyme activity whereas chewing was effective on parotid amylase enzyme activity
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