s. ghorbani

This study introduces an Enhanced Autoregressive Integrated Moving Average (E-ARIMA) model for anomaly detection in time-series data, using vibrations monitored by CA 202 accelerometers at the Kirkuk Gas Power Plant as a case study. The objective is to overcome the limitations of traditional ARIMA models in analyzing the non-linear and dynamic nature of industrial sensory data. The novel proposed methodology includes data preparation through linear interpolation to address dataset gaps, stationarity confirmation via the Augmented Dickey-Fuller Test, and ARIMA model optimization against the Akaike Information Criterion, with a specialized time-series cross-validation technique. The results show that E-ARIMA model has superior performance in anomaly detection compared to conventional Seasonal ARIMA (SARIMA) and Vector Autoregressive models. In this regard, Mean Absolute Error (MAE), Mean Squared Error (MSE), and Root Mean Squared Error (RMSE) criteria were utilized for this evaluation. Finally, the most important achievement of this research is that the results highlight the enhanced predictive accuracy of the E-ARIMA model, making it a potent tool for industrial applications such as machinery health monitoring, where early detection of anomalies is crucial to prevent costly downtimes and facilitate maintenance planning.

Type 1 diabetes is the second most common chronic disease in children and adolescents whose clinical manifestations are often associated with ketoacidosis. The objectives of this study were to describe the characteristics of patients with diabetic ketoacidosis, compare these characteristics among patients with known and newly diagnosed diabetes, and analyze subgroups based on the severity of the disease.

This retrospective cross-sectional study was performed on children and adolescents aged 2 to 18 who were admitted to Taleghani Hospital from April 2016 to March 2020 with a diagnosis of diabetic ketoacidosis. According to the severity of the disease, the patients were divided into three groups: mild, moderate, and severe. The data was statistically  analyzed using SPSS (version 23) software.. P-value<0.05 was considered the level of statistical significance.

Forty-nine children and adolescents diagnosed with diabetic ketoacidosis were hospitalized during the study period. The average age of patients was 10.12±3.59 years, and 32 (65.3%) were girls. About 61% of patients had previously known diabetes. A statistically significant difference was observed in the time to get out of ketoacidosis and creatinine level among the three groups of disease severity.

More than half of the patients had diabetes. The results showed that the more severe the disease, the longer the time needed to get rid of diabetic ketoacidosis.

education is increasing among sports researchers. Although the use of written methods is the first step in the influence of technology in physical education, with the advancement of computers and new technologies, the method of media education is fully developed and has created an interaction between learning and bridging the gap between audio education and audio-visual education. Physical education is one of the most important subject matters in the field of education to educate students to be sociable and responsible. As the use of educational technology can increase the participation of students more actively and engage them in this lesson, the aim of this study is to investigate the effects mentioned and the use of technology in the learning and teaching of physical education in schools. 

The present study is a qualitative-observational and case study that was conducted through interviews and observation of activities. The statistical population is all students and teachers of Gorgan city in Iran. Three schools were randomly selected from among the selected schools. Eight students were randomly selected from each class. Six teachers from each school were randomly selected to be interviewed. Three methods have been used to collect data for this research: 1) interview with the teacher, 2) interview with students, 3) observation of the classes during the activity. To achieve the objectives of the research, special classifications were made. These classifications are as follows: 1) Observing the quality of physical education (entertainment, activity, progress), and 2) Observing the performance of oneself and others (self-efficacy, motivation and group dynamics). In this study, video cameras were used to record the performance of students to increase motivation and learning physical education among them. Data were collected during two periods of school observation and telephone interview with the teacher a few days after the second observation.

The results showed that students value learning new skills in physical education such as combat (5 people agreed) and entertainment (5 people agreed) and consider it a key component for quality of physical education. More interestingly, the students believed that the use of videotaping for recording their performance increased the success of the lesson. Students also consider the use of technology in physical education as one of the methods for successful physical education. In this regard, teachers find the use of technology in physical education in schools more useful and believed that it affects the emotional and social developments of students. Based on the findings of the present study, it seems that students have considered activeness, being in a group, staying healthy and having fun as the main components of the quality of physical education. Teachers believe that a virtual tutor is a good way to motivate students.

Technology should be for the awareness and improvement of the quality of physical education and learning, and the combined use of the two will lead to the growth and improvement of teacher education and student learning. This research can justify and recommend the use of technology in elementary school physical education, which is more focused on increasing the quality of physical education, so the main goal is to develop motor skills. The use of technology in education can help teachers to enhance all aspects of learning (physical, emotional, social and cognitive) in students by using this opportunity.

The main purpose of this paper is to assess the impact of the geometry and size of the aggregate, as well as the drying temperature on the compressive strength of the ordinary concrete. To this end, two aggregates with sharp and round corners were prepared in three different aggregate sizes. After preparing concrete samples, the drying operations were carried out in the vicinity of room temperature, cold wind, and hot wind. Next, the linear relationship between the concrete strength and the studied parameters was estimated using Multiple Linear Regression (MLR) method. Finally, the Taguchi Sensitivity Analysis (TSA) and Decision Tree Analysis (DTA) were applied in order to determine the importance of the parameters on the compressive strength of concrete. As a result, it is obtained that the aggregate size has the greatest influence on the compressive strength of the ordinary concrete followed by drying temperature as stated by method TSA and DTA. In addition, the influence percentages reported for each parameter by Taguchi approach and decision tree method are matched. The prediction of the strength obtained by Taguchi method and second-order regression with the experimental data are in a good agreement. It was concluded that the impact of drying temperature on the concrete strength is several times greater than the effect of the aggregate geometry. Finally, the main conclusion of this research is related to the application of cold wind for drying operation, which leads to an increase of the compressive strength by 8.67% and 11.55% for ordinary concrete containing a constant aggregate size of 20 and aggregate geometries of round and sharp corners, respectively.

In this study, it was attempted to design a high-performance single-walled carbon nanotube (SWCNT) bundle interconnects in a full adder. For this purpose, the circuit performance was investigated using simulation in HSPICE software and considering the technology of 32-nm. Next, the effects of geometric parameters including the diameter of a nanotube, distance between nanotubes in a bundle, and width and length of the bundle were analyzed on the performance of SWCNT bundle interconnects in a full adder using Taguchi approach (TA). The results of Taguchi sensitivity analysis (TSA) showed that the bundle length is the most effective parameter on the circuit performance (about 51% on the power dissipation and 47% on the propagation delay). Moreover, the distance between nanotubes greatly affects the response compared to other parameters. Also, response surface method (RSM) indicated that an increase in the length of interconnects (L) improves the output of power dissipation. As the width of interconnects (W) and diameter of CNTs (D) increase the power dissipation also increases. Decrease in the distance between CNTs in a bundle (d) leads to an increase in power dissipation. The highest value of power dissipation is achieved if the maximum values for the parameters of length and width of interconnects (L, W), and diameter of CNTs (D) and the minimum value of the distance between CNTs in a bundle (d) are considered. It is also revealed that an increase in the length of interconnects (L) increases the propagation delay. Eventually, the optimum parameters are reported and the performance of the optimized system is compared using different methods (TA and RSM). Results indicate that the difference between the performance of optimal design of SWCNT bundle interconnects in a full adder predicted by different methods is less than 6% which is acceptable according to engineering standards.

Inroduction &

Pancreatic Islets are endocrine part of the pancreas responsible for several hormone secretions, which regulates blood glucose and involves in metabolism of energy. Islet β cell responsible for secretion of insulin in response to glucose changes. The first step of this process includes glucose entry into the cell using GluT2 transporter followed by glucose phosphorylation by glucokinase as an intra cellular glucose sensor. Therefore, the aim of this study was the analysis of GluT2 and glucokinase gene expression in pancreatic islets in comparison with whole pancreas tissue.

This study was performed on a pancreatic tissue received from a brain death person. Islets were purified from a total pancreas. To investigate the successful isolation of the islets, the gene expression of Ptf1a, as a marker of the exocrine part of the pancreas, was investigated.Then, gene expression of GluT2 and glucokinase was investigated in both islets and total pancreatic tissue.

The lack of expression of the Ptf1a in the pancreatic islets indicates successful separation and high purity of isolated islets. Moreover, GluT2 and glucokinase genes were highly expressed in pancreatic islets. Furthermore, statistical analysis revealed that gene expression of GluT2 and glucokinase was significantly higher in pancreatic islets than in complete tissue.

The results indicate the high expression and importance of GluT2 and glucokinase genes in the endocrine part of the pancreas as a glucose transporter and sensor, respectively in the process of glucose-stimulated insulin-secretion. In addition, the method used in this study is very efficient for purification of islets from pancreatic tissue.

Human papillomavirus (HPV) as the most common sexually transmitted disease, is directly associated with cervical cancer. The survey of knowledge and attitudes is a central point in determining the most appropriate strategies for effective intervention plan. Medical students as future public health workers can promote the community awareness about cervical cancer and how to prevent it.

Hence, researchers decided to survey the HPV knowledge and attitudes of the medical students.

In this cross-sectional study, 201 medical students were randomly selected. A questionnaire consisting of two parts of awareness (36 questions) and attitude (9 questions) was used. Scores higher than the average were defined as good knowledge and attitudes. CVI and CVR were calculated for validity and the values of both were greater than 90%. Reliability was assessed using Cronbach's alpha that was more than 80 %. The collected data were analyzed by SPSS software version 19.

In this study, mean age of medical students was 24.8±1.66 years and 56.2% of them were female. The source of information about HPV in 83.1 % of students was medical courses. The mean score obtained from the knowledge questionnaire was 18.9 ± 4.37 and 57.2% of students had poor knowledge about HPV. Knowledge was significantly related with age (P=0.002), taking lessons in virology (P=0.0001) and source of information (P=0.038). The mean score obtained from attitude questionnaires was 23.57±3.29 and 57.2% of students had good attitudes. Attitude about human papilloma virus was significantly related with taking lessons in virology (P=0.01) and source of information (P=0.007).A positive correlation between the scores of knowledge and attitude among medical students was seen (P>0.0001).

This study showed that the knowledge in more than half of the students was poor, however, the attitude in more than half of students was good. Plan for training programs to increase student awareness about HPV during their educational course is suggested.

Conflict of interest: None declared.

Concentrations of PAH’s known as carcinogenic compositions were studied in the muscle of Pike fishes (Esox lucius) in Iranian international wetland of Anzali in year 2010. Fifteen samples were taken at three stations of Mahruzeh, Koumeh Aghajani and Siah darvishan in dry (early September) and wet (early December) seasons. Some environmental parameters like pH, dissolved oxygen and water temperature were also measured at the same time. Biometry and age determination were done for each sample prior to their preparation for measurement of PAH’s concentrations using HPLC method. Acenaphtene with the concentration of (31.9 ± 11.37 ppb) and Benzo[a]pyrene with (0.2 ± 0.1 ppb) were the highest and lowest recorded concentrations in each season respectively. In both seasons, significant negative correlations (P<0.05) were observed between Naphthalene and Acenaphtene with fish age (2 year and under 1 year) and also between Benzo[b]fluoranthene and Benzo[ghi]perylene with dissolved oxygen. In both seasons, significant correlation were observed between dissolved oxygen and pH with PAH’s while  between PAH’s and fish weight it was significant only in cold season (P<0.05).Considering the 52.63 ppb (dry weight) as the highest measured concentration of PAH’s in this study and 30 µg/kg (wet weight) as the maximum allowable contamination level for aquatic organisms it can be concluded that the PAH’s concentration in Pike’s muscle is almost within the allowable limit in Anzali Wetland.

Agroecology emphasizes the use of organic materials in agriculture. The organic acids are important sources of organic materials. In order to study the effect of different levels of humic acid on yield and yield components of corn (Zea mays L.) an experiment was conducted at Research Station, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran, during 2009. The experiment was conducted with different levels of humic acid (0, 500, 1500, 2500, 3500 and 4500 g.ha-1) based on randomized complete block design with three replications. Results showed that different levels of humic acid imposed a significant effect on the yield parameters such as grain yield, biomass, leaf area index, leaf area duration, height, row number and ear length, but there were no significant effects on harvest index, 1000-grain weight, ear diagonal, and grain number per row did not have significant effect. According to the results, the highest and lowest grain yield belonged to 3500 g.ha-1 humic acid and control treatments respectively. The highest biomass production observed to 4500 g.ha-1 humic acid treatment. While the highest row number and ear length belonged to 3500 gha-1 humic acid treatments. Generally, it seems that application of humic acid due to having nutritional ingredients and different physiological effects improves corn performance and reduces environmental pollution and it could be used as a natural material to increase and stabilize field crop production.