صفح

Open Access Article

1 - Effect of Menu Location on Visual Attention of Users of Websites
fatemeh seif reza oskouiezade

Objective: In order to identify users’ visual attention to left- and right-aligned menus on web pages, fixation count index (FCI) was assessed for both left and right menus using eye tracker to determine which menu is preferred by users in terms of visual attention. Met More

Objective: In order to identify users’ visual attention to left- and right-aligned menus on web pages, fixation count index (FCI) was assessed for both left and right menus using eye tracker to determine which menu is preferred by users in terms of visual attention. Methodology: In total, 116 pages with their menus aligned to left or right, classified into three groups, namely Persian pages, English pages, and Persian-English pages, were shown to 30 subjects who were asked to find a certain word in the menus. Eye tracker was used to collect and record the data pertaining to users’ fixation counts on each menu, as an indicator of their visual attention to the menus. Findings: No difference was found in terms of total fixation count on English pages with respect to menu direction (right or left). However, users’ total fixation counts varied, depending on menu direction (right or left), for Persian pages, Persian-English pages and, in general, for all pages of three sets, indicating a larger fixation count for right-side menus compared to the menus placed at the left side. Conclusion: Given the larger fixation count for right-aligned menus obtained in the present study and the well-established advantages of this type of menus, and since predictability of left-aligned menu has been an advantage in cultures where native languages are read from left to right, and because the previous studies have led to somehow mixed findings on fast performance of tasks and interaction with left-aligned menus, web designers and developers are recommended to use right-aligned menus in designing internal websites. Manuscript profile

Open Access Article

2 - Provide a basic method for estimating software projects based on logical transactions
mehrdad shahsavari ali mahjour

In this study, in order to determine the level of visual attention of users to the right menu and to the left menu of web pages, the number of dazzles on the right and left menu was measured using an eye tracker to determine which menu is preferable to users in terms of More

In this study, in order to determine the level of visual attention of users to the right menu and to the left menu of web pages, the number of dazzles on the right and left menu was measured using an eye tracker to determine which menu is preferable to users in terms of visual attention. contract. Method: 116 pages containing two right and left menus were displayed in the form of 3 sets of Persian-English and English-Persian for 30 subjects and the subjects were required to find a word in the menus. Data related to the number of users' dazzle on each menu, which was an indication of their visual attention to that menu, was recorded and collected using the gaze tracker. Results: The total number of user idiots on the menus of the English collection did not differ according to the order of the menus (right or left). But the total number of user wonders on the menus of the Persian collection, the Persian-English collection and in general in all the pages of the three collections was different due to the jump in the arrangement of the menus (right or left) and on the right menu more than the left menu. Conclusion: Considering the higher number of dumbbells on the right menu in this study and the proven advantages of the right menu, as well as the fact that the advantage of having a left-hand menu in China has been in cultures whose mother tongue is read from left to right. Although the results of previous studies on the high speed of homework and interaction with the left-hand menu are inconsistent, web designers can be advised to use the right-hand menu when designing native websites. Manuscript profile

Open Access Article

3 - The nature and truth of amnesty from the perspective of the Qur'an and narrations
Mohammad Ali Jahdi Kamandar Sharif,of

and commentators of the Quran stated that we need others to forgive us if we would like to be forgiven and God our sins to forgive and also noted that lack of forgiveness, the people and Nnshandn anger and lack of patience And tolerance towards others will make ou More

and commentators of the Quran stated that we need others to forgive us if we would like to be forgiven and God our sins to forgive and also noted that lack of forgiveness, the people and Nnshandn anger and lack of patience And tolerance towards others will make our community difficult, and also in the explanation of the virtue of amnesty stated that the amnesty of God's morality The Islamic views of Amnesty are explained. Manuscript profile

Open Access Article

4 - Design of E-plane and H-plane Waveguide Filters Using a Genetic Algorithm and Mode-Matching Method
A. Akbari Khezri A. R. Attari

In the conventional method for design of waveguide filters, equivalent circuits such as impedance or admittance inverters are used to model the waveguide discontinuities. These inverters are useful for design of filters with narrow bandwidth. In this paper using a genet More

In the conventional method for design of waveguide filters, equivalent circuits such as impedance or admittance inverters are used to model the waveguide discontinuities. These inverters are useful for design of filters with narrow bandwidth. In this paper using a genetic algorithm and mode-matching (MM) method, and without using the equivalent circuits, two E-plane and H-plane bandpass waveguide filters are designed. To verify the validity of MM method, the frequency response of filters is obtained by the PML-FDTD method. The two filters are also analyzed by the HFSS software. The results of MM method are in excellent agreement with the results provided by FDTD method and HFSS software. An important characteristic of a waveguide filter is the sensitivity of its frequency response to fabrication errors. In this paper, by using the Monte Carlo statistical method, sensitivity of the frequency response of E-plane and H-plane filters to fabrication errors are determined and compared with each other. Manuscript profile

Open Access Article

5 - Classification and Phishing Websites Detection by Fuzzy Rules and Modified Inclined Planes Optimization
M. Abdolrazzagh-Nezhad

One of the most important factors influencing the development of information technology on internet is steal the customer information. This security threat is known as phishing. With regarding to review and analysis of the published methods, lake of create the flexibili More

One of the most important factors influencing the development of information technology on internet is steal the customer information. This security threat is known as phishing. With regarding to review and analysis of the published methods, lake of create the flexibility to effective attribute selection in the procedure of phishing websites detection, non- dynamic behavior of classification algorithm on target websites and also no attention to reduce the amount of computation for the large number of websites are the main gaps of these methods. To achieve the above-mentioned objectives, a new dynamic mechanism is planned to flexible attribute reduction based on designing threshold change of assessment in this paper. Then inclined planes optimization algorithm is memorized based soft reducing the effect of the embedded memory though high iterations and 12 fuzzy rules are defined in a fuzzy inference system for intelligent dynamiting the algorithm. The experimental results of the proposed intelligent algorithm and the comparison the algorithms with the best available algorithms; demonstrate the ability of the modified inclined planes optimization algorithm to detect phishing websites and satisfy the above mentioned objectives. Manuscript profile

Open Access Article

6 - Adaptive Educational Hypermedia Web Pages Recommending Based on Learning Automata and User Feedback for Resource-Based Learning
Mohammad Tahmasebi Faranak Fotouhi-Dgazvini M. Esmaeili

Personalized recommender systems and search engines, are two effective key solutions to overcome the information overloading problem. They use the intelligent techniques on users’ interactions to extract their behavioral patterns. These patterns help in making a persona More

Personalized recommender systems and search engines, are two effective key solutions to overcome the information overloading problem. They use the intelligent techniques on users’ interactions to extract their behavioral patterns. These patterns help in making a personalized environment to deliver accurate recommendations. In the technology enhanced learning (TEL) field and in particular resource-based learning, recommendation systems have attracted growing interest. Specially, they are an important module of Adaptive Educational Systems that deliver the appropriate learning objects to their users. Gray-sheep users are a challenge in these systems. They have a little similarity with their peers. So the recommendations to others are not suitable for them. To overcome this problem, we propose the idea of accommodating the user’s learning style to web page features. The user's learning style will be computed according to Felder-Silverman theory. On the other hands, the necessary implicit and explicit meta data will be extracted from OCW web pages. By matching the extracted information, the system delivers the appropriate educational links to user. The user can compare the proposed links, based of our algorithm, to the output of Lucene algorithm. A user’s opinion about every web page as a recommended result would be submitted to the system. The system uses a learning automata algorithm and user’s feedback to deliver best recommendations. The system has been evaluated by a group of engineering students to evaluate its accuracy. Results show that the proposed method outperforms the general search algorithm. This system can be used at formal and informal learning and educational environments for Resource-based learning. Manuscript profile

Open Access Article

7 - Proposing an Intelligent Method for Design and Optimization of Double tail Comparator
Sadegh Mohammadi-Esfahrood Seyed-Hamid Zahiri

The performance of an Analog/Digital (A/D) converter, various aspects like general architecture of the converter, architecture of the building blocks or design of the blocks can be improved. The comparator block is a fundamental block in data converters. Due to contradi More

The performance of an Analog/Digital (A/D) converter, various aspects like general architecture of the converter, architecture of the building blocks or design of the blocks can be improved. The comparator block is a fundamental block in data converters. Due to contradicting design purposes, circuit constraints and necessities, design of comparators and obtaining best circuit performance are complicated and challenging. Such challenges in circuit design necessitate presenting approaches which not only satisfy all the objectives but also, they are cost effective in terms of time and cost. One of the approaches which has recently attracted attentions is the heuristic algorithms based intelligent Methods. Inclined Planes system Optimization algorithm (IPO) is a novel heuristic algorithm inspired by dynamic movement of the objects on frictionless inclined planes. But despite its remarkable ability for exploration and exploitation of the search space, its standard model has complex relationships with many structural parameters that often confuse the user in choosing the effective values for them. In this paper, IPO algorithm is simplified to present a heuristic algorithm (called SIPO) and its efficiency in optimization of 10 standard benchmarks has been evaluated. Then, a multi-objective version of the proposed algorithm (called MOSIPO) for design and optimization of double tail comparator is presented and its efficiency in optimization of double tail comparator has been evaluated and compared with popular multi-objective intelligent methods. The results clearly demonstrate the improved performance and superiority of SIPO and MOSIPO compared to the other methods. Manuscript profile

Open Access Article

8 - Stochastic Planning of Resilience Enhancement for Electric Power Distribution Systems against Extreme Dust Storms
M. Haghshenas R. Hooshmand M. Gholipour

Resilience in power systems refers to the system's ability to withstand severe disturbances with a low probability of occurrence. Because in recent years extreme dust storms have caused severe damage to Iran's electricity industry, especially in the south and southwest, More

Resilience in power systems refers to the system's ability to withstand severe disturbances with a low probability of occurrence. Because in recent years extreme dust storms have caused severe damage to Iran's electricity industry, especially in the south and southwest, in this paper proposed a new scenario-based stochastic planning model for enhancement of power distribution systems resilience against extreme dust storms. In proposed model, in the first stage, the investment costs to improve the distribution system resilience against extreme dust storms are minimized due to the financial constraints, and in the second stage, the expected operating costs in dust storm conditions are minimized due to the operating constraints. Because network's insulation equipment are major cause of distribution system vulnerabilities in the dust storms, measures in the planning stage include replacement of porcelain insulators with silicon-rubber type, installation of automatic tie switches and installation of emergency generators. In the second stage, the measures are divided into preventive actions and corrective actions, and coordination between stages 1 and 2 is implemented in such a way that the results of each stage depend on the decision variables of the other stage. The simulation results for IEEE 33-bus test system and a 209 bus radial distribution network located in Khuzestan province, Iran, confirm the efficiency of the proposed model in different financial conditions. Manuscript profile

Open Access Article

9 - Design and Simulation of an ESIW H-plane Horn Antenna with High Gain and Improved Bandwidth
سید حسین حقیرالسادات محمدحسن نشاطي

In this paper by using the radiation slots, the half power beam width (HPBW) of the SIW horn antenna is reduced in E-plane and the radiation pattern is improved. In addition to keeping the dimensions of the structure constant, these slots can have a significant effect o More

In this paper by using the radiation slots, the half power beam width (HPBW) of the SIW horn antenna is reduced in E-plane and the radiation pattern is improved. In addition to keeping the dimensions of the structure constant, these slots can have a significant effect on the characteristics of the antenna. Also placing the reflector plate at a suitable distance from aperture and slots leads to improve side lobe levels (SLLs) and front to back ration (FTBR). Then, to improve the impedance matching and increase the bandwidth of the antenna, the dielectric of the structure is completely removed and non-radiation slots added to the upper and lower plate of the antenna. Removing the insulation, increasing the bandwidth of the antenna compared to a conventional SIW horn and adding radiation slots significantly improves the gain of the antenna. The simulation results shows that the proposed antenna in this paper covers the frequency range of 27.2 GHz to 28.3 GHz and its gain changes between 10.1 dBi to 15.3 dBi with 98% radiation efficiency in this range. Finally, in order to increase the gain of the antenna, a two-dimensional array of the proposed antenna with suitable feeding structure is designed in the H-plane. Manuscript profile

Open Access Article

10 - Novel AI-Based Metaheuristic Optimization Approaches for Designing INS Navigation Systems
علی محمدی Farid Sheikholeslam Mehdi Emami

Soft computing techniques in engineering sciences have covered a large amount of research. Among them is the design and optimization of navigation systems for use in land, sea, and air transportation systems. Therefore, in this paper, an attempt is made to take advantag More

Soft computing techniques in engineering sciences have covered a large amount of research. Among them is the design and optimization of navigation systems for use in land, sea, and air transportation systems. Therefore, in this paper, an attempt is made to take advantage of novel approaches of intelligent metaheuristic optimization for designing integrated navigation systems. For this purpose, the inclined planes system optimization algorithm with several modified and new versions have been used along with two well-known methods of genetic algorithm and particle swarm optimization. Considerations are made on an INS/GNSS problem with IMU MEMS inertia measurement modules. Process and measurement noise covariance matrices are considered as design variables and the sum of mean-squares-error as an objective function in the form of a single-objective minimization problem. Outputs are presented in terms of statistical and performance indicators such as runtime, fitness, convergences, angular-velocity accuracy, latitude, longitude, altitude, roll, pitch, yaw, and routing along with the ranking of algorithms. The overall assessment indicated the correctness of the performance and the relative superiority of the IPO and IIPO over the competitors and competitive performance of the assumed algorithms in comparison with the volume of considerations and calculations of the base problem. Manuscript profile

Open Access Article

11 - Fake Websites Detection Improvement Using Multi-Layer Artificial Neural Network Classifier with Ant Lion Optimizer Algorithm
Farhang Padidaran Moghaddam Mahshid Sadeghi B.

In phishing attacks, a fake site is forged from the main site, which looks very similar to the original one. To direct users to these sites, Phishers or online thieves usually put fake links in emails and send them to their victims, and try to deceive users with social More

In phishing attacks, a fake site is forged from the main site, which looks very similar to the original one. To direct users to these sites, Phishers or online thieves usually put fake links in emails and send them to their victims, and try to deceive users with social engineering methods and persuade them to click on fake links. Phishing attacks have significant financial losses, and most attacks focus on banks and financial gateways. Machine learning methods are an effective way to detect phishing attacks, but this is subject to selecting the optimal feature. Feature selection allows only important features to be considered as learning input and reduces the detection error of phishing attacks. In the proposed method, a multilayer artificial neural network classifier is used to reduce the detection error of phishing attacks, the feature selection phase is performed by the ant lion optimization (ALO) algorithm. Evaluations and experiments on the Rami dataset, which is related to phishing, show that the proposed method has an accuracy of about 98.53% and has less error than the multilayer artificial neural network. The proposed method is more accurate in detecting phishing attacks than BPNN, SVM, NB, C4.5, RF, and kNN learning methods with feature selection mechanism by PSO algorithm. Manuscript profile

Open Access Article

12 - Isotopic geochemistry of Rb-Sr, Sm-Nd and 40Ar-39Ar dating of Ghoshchi gabbros, north of Uromiyeh, northwest of Iran
Sh. Shahabi Hadi Shafaii Moghadam Ghasem Ghorbani

The studied Ghoshchi complex gabbros are located in the north of Uromiyeh city and NW of Central Iran structural zone. These rocks are intruded into the Cadomian basement, and late diabasic, granitic and aplitic dikes crosscut these gabbros. Clinopyroxene and plagioclas More

The studied Ghoshchi complex gabbros are located in the north of Uromiyeh city and NW of Central Iran structural zone. These rocks are intruded into the Cadomian basement, and late diabasic, granitic and aplitic dikes crosscut these gabbros. Clinopyroxene and plagioclase are the main minerals of the gabbros. These rocks are characterized by relatively low 87Sr/86Sr (0.703280-0.704343) ratios. Their isotopic signatures indicate a within plate environment for the formation of gabbros and derivation from an enriched mantle source. 40Ar-39Ar dating shows 316.55±1.68 Ma (Carboniferous period) as minimum age and are related to almost early phases of Neotethys opening. The Ghoshchi gabbros are originated more likely from a spinel-garnet lherzolitic mantle source with about 5% partial melting. Manuscript profile

Open Access Article

13 - Relationship Between Perceived Stress And Craving Usage with Predicting Relapse in Stimulants Users Mediated By Self-Control
roya jalili Javad KHalatbari Hassan Ahadai shohreh ghorban shiroudi

The purpose of the present study was to investigate the relationship between perceived stress and craving for consumption with predicting people's return to stimulants with the mediation of self-control. This research was method descriptive-correlative. The statistical More

The purpose of the present study was to investigate the relationship between perceived stress and craving for consumption with predicting people's return to stimulants with the mediation of self-control. This research was method descriptive-correlative. The statistical population of this research included all people who used stimulants, hospitalized in care centers in Tehran in 1400 (2019). For sample selection, 250 persons were randomly selected based on the structural modeling formula. In order to collect information, Cohen's Perceived Stress Scale, Franken's Substance Craving, Wright's Substance Return Prediction and Tanji's Self-Control Scales were used. The analysis of the research data, using the path analysis method, showed that there is a positive and significant relationship (P<0.01) between perceived stress and predicting return to stimulants with the mediation of self-control and between drug craving and predicting return to stimulants with The mediation of self-control. Also, there were a negative and significant relationship (P<0.01) between self-control and predicting return to stimulants. Thus, it can be concluded that with increase in perceived stress and the urge to use, the return to use of stimulants increases and the amount of self-control decreases, and with decrease of self-control, the return to use of stimulants increases. Manuscript profile

List of Articles صفح

Rimag

Links

Related Centers

Technical Support

Official pages