جستجوی مقالات مرتبط با کلیدواژه « information » در نشریات گروه « فنی و مهندسی »

It is inevitable to properly manage the implementation of information and communication technology policies in a planned way in order to improve the country's position in the fields of science and technology. The purpose of this research is to provide a model of the effective factors on the implementation of Iran's ICT policies with the help of the neural network technique and based on Giddens' constructive theory. From the point of view of conducting it, this research is of a survey type and based on the purpose, it is of an applied type because it is trying to use the results of the research in the Ministry of Communication and Information Technology and the Iranian Telecommunications Company. Data collection is based on library and field method. The tool for collecting information is research researcher-made questionnaire. The statistical population of the research is information and communication technology experts at the headquarters of Iran Telecommunication Company (810 people), of which 260 people were randomly selected as a sample based on Cochran's formula. MATLAB software was used for data analysis. According to the findings, the best combination for development is when all input variables are considered at the same time, and the worst case is when the infrastructure development variable is ignored, and the most important based on network sensitivity analysis is related to infrastructure development and the least important is related to content supply.

Today, the security of information in communication channels is of great importance, and the higher the classification of information, the higher the importance of security. From a long time ago, various encryption algorithms were proposed to ensure communication security, and different organizations use different encryption algorithms based on the sensitivity of the information. Information can be classified into different types, textual information is one of the most diverse types of information, which becomes more important if there is a classification. In this article, based on the 28-character alphabet, a new encryption method is presented, which has high security and speed, and is resistant to attacks based on the frequency of letters. Laboratory results show a very high resistance of this method against a comprehensive attack. The attacker's need for a lot of memory, which is practically inaccessible, that is another reason for the robustness of this algorithm. Given the key generation algorithm in this method, it can be ensured that this algorithm is also very resistant to attack in the middle.

The present study was designed and conducted to investigate the factors affecting the development of the information system of athletes' psychological abilities. The method of the present research was applied in terms of purpose and in terms of method, based on data retrieval, was of a mixed nature (qualitative and quantitative). The statistical population of the present study in the qualitative section included university professors specializing in the field of sports psychology as well as professors in the field of research (psychological capabilities of athletes and information systems) who had undertaken at least two research studies (in the form of books, research articles, conference papers, research projects, translations, etc.), and elite athletes studying at the Islamic Azad University of the country. The number of identified professors was 45 and the number of identified athletes was 30. All of these individuals were contacted and asked to participate in the research. Of these, 61 announced their readiness. Initially, after interviewing 11 of the participants, there was a theoretical saturation. However, due to the certainty of the results, two more interviews were conducted. Finally, interviews were conducted with 13 people. Then, in the quantitative part, the same community as the qualitative part was considered and questionnaires were distributed among 61 participants. The data collection tools in the present study were a semi-structured interview and a researcher-made questionnaire. Qualitative results of the study showed that 26 characteristics were extracted through interviews which were classified into 5 factors including technical, scientific, regulatory, educational and personal. The results showed that the technical factor was the most important factor in the development of the information system of psychological abilities of athletes. According to the results of the present study, it is recommended to classify psychological information as well as protect athletes' psychological information. Building trust in the information system of athletes' psychological capabilities provides the ground for the application of this system.

The mission of the education system is to transform students into citizens of the information society, according to technological developments that can use the facilities and platforms created in education to guide and direct daily activities and solve different problems appropriately. The Iranian educational system has emphasized the use of new technologies, the National Information and Communication Network in education, by preparing the "Fundamental Transformation Document of Education". Along with the expansion of ICT integration in schools, the matter of evaluating ICT integration in primary schools is important to ensure and improve the quality of teaching and learning, to determine the contexts and requirements of integration in the curriculum for implementation and enforcement. Evaluation criteria help all experts, managers and teachers to always be aware of the results of their work and know how much educational goals and goals of the organization have been achieved. This awareness leads to the integration of ICT in the curriculum in the desired way. The purpose of this study was to determine the holistic framework for evaluation of ICT integration in elementary school curriculum.

This research was conducted by a combined exploratory method in two stages. The qualitative research method was phenomenological. In the first stage, in order to determine the evaluation criteria, the semi-structured interview was conducted using purposive sampling, and in the next stage, a questionnaire was used to confirm the evaluation criteria by available sampling method. The participants in qualitative phase were selected based on criteria-based sampling method and the rule of theoretical saturation and hence included teachers and principals of smart schools. The statistical sample in the quantitative part included experts in the field of e-learning. Participants in the qualitative section included six principals and nine teachers and in the quantitative section, the participants included ten e-learning experts. In order to analyze the collected data in the qualitative part, the collage method (open, axial and selective coding) and in the quantitative part, CVR was used.

The findings of the research in the qualitative part indicated that the evaluation framework of ICT integration included 14 criteria in different sections such as: supportive (3 criteria), electronic content (2 criteria), teacher's teaching activities (2 criteria), materials and learning resources (2 criteria), learning activities (2 criteria) and student group activities (2 criteria). In the quantitative part, the CVR percentage of all six evaluation components was higher than the table number (0.62). Electronic content components and support with the highest percentage and qualification of students were confirmed with the lowest percentage of agreement among the evaluation criteria.

In order to increase the quality of integration in evaluation, special attention should be paid to the interaction and transaction of all evaluation components. The emphasis on separate evaluation of the dimensions of integration is the incomplete implementation of integrated evaluation in the curriculum. It is suggested that evaluators have a comprehensive and holistic view of all evaluation criteria in the field of Organizational and Educational Areas in evaluating the integration of ICT in the curriculum.

The present study aimed to investigate the causal relationships between the structural Components for the development of the Iranian higher education system with a future study approach. In terms of purpose, this research is an applicable one that was prepared with a mixed method with the exploratory design. In the qualitative part, the statistical population of the study consisted of experts of the futures study panel, and in the quantitative part, included faculty members and staff of Islamic Azad universities in Region 3 of the country, 20 people and 5878people, respectively. In the qualitative part of the purposive sampling method, 15 people and in the quantitative part with the combined cluster and stratified sampling method and based on the Cochran''s formula, 361 people were selected as the sample. A researcher-made questionnaire was adopted to collect data. The face and content validity of the instrument(0.881) as well as the combined reliability(0.932) and Cronbach''s alpha(0.922) coefficient were approved by experts. Exploratory and confirmatory factor analysis tests were used to analyze the data. The five sub-criteria of financial resources(0.825), futuristic organizational culture (0.810), information and communication technology(0.798), agile organizational structure (0.760), and university independence(0.756) were identified according to the results of structural criteria.

The security of concealed information transfer can be ensured by both Steganography and Cryptography. The combination of these two methods can be used to enhance information security. In Cryptography because the message is encrypted, if the message is received by an attacker in the middle of the message, the original message is not disclosed. While Steganography the message information, the hidden message is embedded in an image called the cover image and then sent to the recipient. The proposed method uses Steganography to add Wavelet conversion coefficients that solves the problem of zigzagging the information histogram with LSB of the host image to increase resistance to other methods. Therefore, in this method the correlation between adjacent pixels of the image is minimized, which makes the image histogram not hide in the zigzag cover media despite the four messages being undercover. And to increase the security of undercover file encrypted by visual Cryptography with four subscriptions that even if the hidden media content is encrypted, the key information is not unauthorized. The combination of these two methods is highly secure and the results show that the computational complexity of this method is very low, it has simple algorithm implementation, very short time to run the implemented algorithm, and the recovery of the encrypted image is very easy.

The purpose of this study was to analyze and explain the impact of information and communication technology on the skills training system using Porter's value chain model as a theoretical framework. For this purpose, in conducting quantitative research, a researcher-made questionnaire was used, the validity of which was confirmed by experts and its reliability was accepted by Cronbach's alpha test with a value of 0.957. Findings from the analysis of the collected data indicated that the three effects of information and communication technology (including the effect of automation, the effect of information and the effect of transformation) can influence both aspects of the value chain of the skills training system (including core activities and support activities). Accordingly, it is expected that the increasing prevalence of information and communication technology in the various pillars of the skills training system can have a positive impact on improving the efficiency and effectiveness of this vital and important system.

The present study was conducted to provide a technology-based virtual education model in order to advance primary school curricula with a combined approach. The current study was practical in terms of purpose, and the research methods used were a combination of sequential and exploratory. Data collection method used was a survey. The statistical population in the qualitative section included experts familiar with e-learning who are purposefully of the standard type (people who had published at least one article in the field of technology and e-learning in reputable domestic and foreign publications or translated and written on the subject); they were selected for qualitative interviews on the subject of research (16 interviews with 16 people and continued to the point of theoretical saturation) and in the second part (quantitative) after collecting information from qualitative research, a questionnaire was created and randomly distributed among primary school principals in Tehran in both groups of public and non-profit public schools for girls and boys. The statistical population included 2500 people who were randomly distributed in two categories of public and non-profit schools in each category. The data collection tool used in the present study was a semi-structured interview and a questionnaire extracted from the qualitative section (40 items and 10 components). Therefore, in general, in order to advance primary school curricula, the following categories of technology-based e-learning model were found: in order of importance, macro structure, finance, organizational culture, curriculum, the nature of e-learning, manpower, attitude and preparation, facilities, management and training.

Today, information and communication technology has influenced all areas of human life, including economics and politics. In research on the effects of information and communication technology, its effects on economic risk and political risk have not been considered so far. Therefore, this study has examined the effect of ICT development on economic and political risk for three selected groups of developed, developing, and OPEC countries in the period 2007- 2019. The panel data method was used to estimate the model. Based on the model estimation results for all sample countries, the deployment of information and communication technology reduces economic and political risk; But the results are different for each group. As the development of information and communication technology in selected OPEC members and developing countries increases economic risk; But in developed countries, it reduces economic risk. Also, in OPEC member countries, no significant relationship was found between ICT and political risk, and in selected developed and developing countries, ICT increases political risk.

The Infallible Imams (A.S), for protecting Shiism and creating security for Shiites against enemies, taught some methods; methods which have sometimes been related to security and sometimes intelligence issues for reaching information from the oppressive government system and so on; the present research tries to answer this question that: what has been the method of classification of information, people and documents in the conduct of the Infallible Imams? Imams protected Shiites and the culture of Shiism and protected the documents and information from destruction and annihilation by utilizing different methods like dissimulation (taqiyyah), secrecy and so on and by using different means like deputyship and influence in the system of oppressive rulers.The present research seeks to present methods of classification of information, people and documents in the conduct (sirah) of the Infallible Imams (A.S) which are scattered and it is presented using descriptive-analytical inductive method.  By utilizing the methods and means of the Infallibles, which some of the most important ones are mentioned in this article, the conspiracies of enemies against Shiites and their documents and correspondences can be thwarted and disclosed and we can defend the values and the Islamic system by informational confrontation based on the teachings of the conduct of the Infallibles.

Nowadays, the increasing usage of technologies in the education process, along with fundamental changes in educational approaches, has provided the basis for the fully intelligent education systems. Currently, the education system is facing transnational challenges such as globalization, entering the digital information society and the expansion of distribution networks and global mass communication media. The purpose of this article is to examine the important solutions for the development of technology-based infrastructures in the education system, in order to improve the self-efficacy and effectiveness of education. For this purpose, the method of library study and review of recent articles in this field was used. The results of the research present that the integration of information and communication technology infrastructures with the education system leads to the development of smart education, increasing the availability of educational resources, increasing accuracy, eliminating human errors, accelerating information transfer, stabilizing education, creative learning and reducing costs and finally, increasing self-efficacy and training effectiveness. In this regard, in this article, some of the most important solutions for the development of technology-based infrastructures in the education system have been suggested.

The purpose of this study is the role of ICT in establishing a knowledge management system with a Meta- Synthesis approach in General Department of Education of Mazandaran Province. The method of the present study is qualitative with fundamental purpose, which has been collected in a hybrid and using the seven-step model of Sandlowski and Barroso (2007). The statistical population of this research is the previous available researches in the field of knowledge management and the criterion of statistical sample size is theoretical adequacy. after designing a research question, a systematic search was examined during the years (2000 to 2020). After performing the metasynthesis and review steps, 14 articles out of 152 articles were found. The results showed that the components of technological capabilities (mastery of related software, increasing efficiency and interactions using the internal network and the ability to use the Internet for educational and research purposes) and the component of technological infrastructure (Existence of up-to-date technological infrastructure and equipment, creation of technological knowledge base, creation of virtual discussion mechanisms, existence of optical fiber and personal computers, necessary support in the field of technology, the documentation of experiences and use of internet and intranet) can be cited

The purpose of this study is to determine the relationship between information and communication technology and job performance with the mediating role of organizational agility. In terms of applied purpose, this research is a method of collecting field and descriptive correlational information. The statistical population was 254 professors of all Islamic Azad universities in the east of Mazandaran province, who were selected as a sample using Krejcie and Morgan table and stratified random sampling method. Data collection tools were standard questionnaires of Mahmoudi (2013), Patterson (1970) job performance and Zhang and Sharifi (2002) organizational agility questionnaires. The validity of these questionnaires was confirmed by experts, reliability was calculated through Cronbach's alpha coefficient. The value for information and communication technology was 0.96, job performance was 0.84 and organizational agility was 0.90%. Spss and Pls software were used to analyze the data. The results showed that there is a relationship between information and communication technology and job performance with the mediating role of organizational agility. There is a relationship between ICT and professors 'job performance. There is a relationship between organizational agility and professors' job performance. There is a relationship between information and communication technology and organizational agility of professors.

Nowadays, modern technologies provide a certain level of digitalization of business processes. Due to the influence of information and communication technology in all areas of social life and business processes, it is possible to implement production decisions based on the needs and requirements of the customer. This trend is mainly due to advances in information and communication technology and the Internet. Thanks to the Internet and a phenomenon called the Internet of Things (IOT), higher profits and improved quality of life in society can be achieved. This article discusses the use of internet of things solutions to streamline smart business services and equip services to support management decisions in smart businesses. The main purpose of this article is to evaluate the increasing progress of this technology that is affecting the whole world now, so IoT can not be talked about as a topic in the future. The main findings of the article can be summarized through the statement that, in the near future, all businesses will try to implement the concept of the Internet of Things in their processes and thus become smart businesses. Thanks to the Internet of Things, businesses can intelligently and quickly process data and distribute results to those responsible for making decisions in the smart organization.

The main purpose of this paper is to investigate the effect of ICT development on transportation demand in Iranian provinces. For this purpose, by collecting the required information and statistics during the period 2009-9018 and using the GMM, the role of information and communication technology on the demand for transportation in the provinces of Iran was tested. The ratio of the average household expenditure in the transportation sector to the average household expenditure in the non-food sector as transportation demand and the IDI index, the number of Internet users, the number of mobile subscribers and the number of landline subscribers for ICT have been used. . The results of this study indicate that the price elasticity of transportation demand is less than one unit and is positive and less elastic in terms of revenue. Also, with the development of information and communication technology, the demand for inter-provincial transportation will increase.

Dynamic environment and high speed of technological changes are the most important drivers of technology development and innovation in the ICT industry. The high speed of knowledge flow has caused many companies to have problems and confusion in its acquisition and application. Therefore, it is necessary to pay attention to improving the capacity to attract actors active in this industry in order to increase competitive advantage in international markets. Because it shows the ability of the organization to detect new external information, absorb and use it in line with the goals of the organization. Since the absorption capacity can be considered as a function of environmental changes in the company, so our technological cooperation between companies as an environmental factor affecting the organization, affects the absorption capacity. Thus, the main purpose of this study is to investigate the factors affecting the improvement of absorption capacity through technological cooperation in mobile network operators in Iran as one of the leaders in the field of information and communication technology. In this research we used mixed method and presented with 5 hypotheses. Confirmatory factor analysis and structural equation tests were used to analyze the results of the qualitative part of the research. The results of this study show that organizational culture, organizational capability, organizational openness, creativity and innovation of the organization are effective factors in improving the absorption capacity of technological cooperation in mobile operators.