1,282 research outputs found
Studying the flourishing of Iranian students based on Seligman model and its comparison based on demographic variables
Introduction: The basic objective of this paper was to study the flourishing of Iranian students based on Seligman model and its comparison based on demographic variables. Methods: 400 subjects of all students enrolled in the second semester of academic year of 20142015 in Ferdowsi University of Mashhad were randomly classified and studied as the sample group. Flourishing questionnaire was used to test the hypotheses. The flourishing questionnaire includes four components of positive emotions, relationships, meaning and achievement. To analyze the research data, the followings were used: percentage, mean, system dynamics (SD), multivariate analysis of variance, univariate analysis of variance and post hoc least significant difference (LSD) test. Results: Descriptive results showed that 5% of students are at wilting point; 30% have relative mental health and 65% are at flourishing state. The highest percentage of flourishing students was in the meaning component (72.5%), while the lowest percentage of them was found in the positive emotions component (59.75%). The results of MANOVA test and follow-up tests also showed that the flourishing rate of the students is not affected by father's education, mother's education, father's occupation, mother's occupation, school and residence of the students (native or non-native); however, the flourishing rate of the students in the relationships component was significantly different with regard to the gender and education of the students; This means that the female students compared to the male students, and master and PhD students compared to the undergraduate students had earned higher scores in the relationships component. Conclusion: At the end, according to the results of the present study, it is suggested to develop a unique intervention program to promote and foster flourishing of the students, while considering gender and educational differences in the relationships component. Declaration of Interest: None.
The application of information technology and its relationship with organizational intelligence
AbstractThe purpose of this research is to survey the application of information technology and its relationship with organizational intelligence in the employees of universities in golestan province. This research has done as descriptive, survey and correlation, After studying literature and research history, components, factors, effective factors on information technology and organizational intelligence were extracted in golestan province.then the research prepared a questionaire about information technology and standard questionaire which is about organization intelligence that its components inferred on the basis of theoretical opinions. The statistical society of this research included all over employees of universities in golestan province. Statistical sample included employees of universities in golestan province that sample size was determined on the basis of kristy-morgan table. The results showed there is a significant relationship in applying information technology with tendency to modify, applying knowledge and common perspective
Peptide-Catalysis in Asymmetric Organic Synthesis
Stereo-selectivity is an important feature in the development of the synthesis of biologically active organic compounds. In this process, (bio) catalysts exhibit substrate specificity that allows high levels of chemo- and regio-selectivity. Over the past decade, several peptides have been developed as effective bio-catalysts for a range of synthetically valuable reactions. In comparison with proteins owing a large number of amino acids and high molecular weights, peptide-catalysts possess only a few amino acid residues, which may adopt a secondary structure suitable for synthesis of desired chiral products. In addition, the flexible nature of peptides consents for tuning of reactivity and selectivity by replacing amino acid residues. These unique aspects provide attractive biocatalysts platform for asymmetric syntheses.HighlightsAsymmetric catalysis has an impressive progression in the manufacture of pharmaceuticals.Enzymes and natural/synthetic peptides are attractive biocatalysts of the chiral reactions.Peptides show unique features compared with other catalysts in asymmetric catalysis.
Predicting the Earthquake Magnitude Using the Multilayer Perceptron Neural Network with Two Hidden Layers
Because of the major disadvantages of previous methods for calculating the magnitude of the earthquakes, the neural network as a new method is examined. In this paper a kind of neural network named Multilayer Perceptron (MLP) is used to predict magnitude of earthquakes. MLP neural network consist of three main layers; input layer, hidden layer and output layer. Since the best network configurations such as the best number of hidden nodes and the most appropriate training method cannot be determined in advance, and also, overtraining is possible, 128 models of network are evaluated to determine the best prediction model. By comparing the results of the current method with the real data, it can be concluded that MLP neural network has high ability in predicting the magnitude of earthquakes and it’s a very good choice for this purpose
Specular Microscopic Features of Corneal Endothelial Vacuolation
Purpose: To introduce a specular microscopic reference image for endothelial vacuolation in donated corneas.
Methods: Two corneas from a donor with diffuse, round to oval dark areas at the endothelial level on slit lamp biomicroscopy and one normal-appearing donor cornea underwent specular microscopy, histopathologic evaluation and transmission electron microscopy.
Results: Specular microscopy of the two corneas with abnormal-looking endothelium revealed large numbers of dark, round to oval structures within the endothelium in favor of endothelial vacuolation. Light microscopy disclosed variable sized cyst-like structures within the cytoplasm. Transmission electron microscopy showed electronlucent and relatively large-sized intracytoplasmic vacuoles. These features were not observed in the endothelium of the normal cornea.
Conclusion: The specular microscopic features of endothelial vacuolation in donated corneas were confirmed by light microscopy and transmission electron microscopy, therefore the specular image may be proposed as a reference to eye banks
A 27-Year Report from the Central Eye Bank of Iran: A complete translation from Farsi
This article is based on a study first reported in Farsi in the Bina Journal of Ophthalmology, titled گزارش عملکرد سه دهه اي بانک چشم جمهوري اسلامي ايران, Volume 24, Issue 2 (Winter 2019) 2019/05/28. Original URL: https://www.sid.ir/fa/journal/ViewPaper.aspx?ID=487896
Purpose: To report the 27-year statistical data from the Central Eye Bank of Iran (CEBI) and its activity.
Methods: All CEBI records regarding procured eyes, tissue utilizations, corneal transplants per capita, and indications for keratoplasty from 1991 to 2017 were analyzed.
Results: In total, 115,743 whole eyes were donated during the 27-year period. Out of the 114,169 eyes donated between 1994 and 2017, 95,314 eyes were distributed for transplantation, and 95,057 corneas were actually transplanted. The mean annual rate of corneal transplants per capita was 55.10−6 ± 27.10−6. Although penetrating keratoplasty (PKP, 70%) was the most common technique of corneal transplantation during the study period, it exhibited a decreasing trend between 2006 and 2017 (P = 0.048). It was in contrast to Descemet stripping automated endothelial keratoplasty (DSAEK) that demonstrated an increasing trend during the same period (P < 0.001). Keratoconus (KCN, 39.70%) was the most leading indication for keratoplasty over the last three decades followed by bullous keratopathy (BK, 18.5%), corneal scar and opacities (15.7%), and graft failure (GF, 7.5%), with an increasing trend for BK, GF, and KCN. A majority of scleral tissues (83.7%) were utilized for orbital implant protection.
Conclusion: An increasing trend in the number of procured eyes was observed over the past 27 years in Iran. The most leading indications for corneal transplantation were KCN and BK. While PKP was the most common keratoplasty technique, DSAEK showed an increasing trend over the last 12 years
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