نشریه آرمان پردازش
سال دوم شماره 2 (تابستان 1400)

Memory management is one of the critical and major functions of the modern operating systems, that manages the main memory operations and shifts processes between main memory and disk during the application execution. Memory management manages them all, whether or not different memory locations are allocated to a process. This process determines the amount of memory that must be allocated to operating system processes. Memory management approches decide which process to access memory at a time and track the amount of memory allocated or free up and update the corresponding states. In this study, we have examined the major dimensions of the memory management issue from the perspective of the operating system administrators, the validation of quality requirements and also how to use the quality dimensions in the memory management of the modern operating systems, due to its great importance in this field for ensuring efficiency and performance.

Based on the research and efforts of statistical scientists and even non-statistical fields, different methods have been developed to conduct statistical research, analyze findings and describe related results. Different methods of statistical tests are different approaches based on statistics that are widely used to conduct scientific research methods in different sciences. Usually, based on the theory and method of research, they are divided into two categories: "qualitative research" and "quantitative research". Usually in qualitative research, based on one or more observations, we try to describe and diagnose the cause-and-effect relationship and attribute the considered characteristic to the society. This is usually done by sampling and using statistical inference and inductive method, and the result of this research leads to a specific hypothesis or theory. Whereas in quantitative methods, we first intend to prove or disprove a theory, and by sampling from the statistical population, we reject or confirm this theory. This is done with the help of deductive inference. In order to better understand the problem and create an analytical schema, in this article, a review of basic statistical research methods and a comparison of their characteristics is presented.

From the beginning of human life, security has been one of the main concerns of human beings. Today, with the expansion of the Internet and networked spaces in our country, the need for security to operate in these virtual spaces is felt more than ever. Fear of destroying moral and social foundations, and lack of psychological and cultural security due to the influx of contaminated and destructive information through the Internet and cyberspace is a logical response, because each society has its own information frameworks. It is natural that any kind of information that breaks these boundaries can endanger the health and security of society. Despite the positive aspects of global networks, the misuse of these computer networks by norm-breakers has endangered national security in various countries. Therefore, the use of various methods and solutions to prevent the penetration of malicious data and the selection of healthy information in these networks is increasing. Fortunately, despite the much hype that makes the World Wide Web and cyberspace uncontrollable, the technology needed to control the network and select healthy information is evolving. In this article, we first get acquainted with topics such as cyber security and cybercrime and its types, then deal with various types of information technologies in general and provide examples of it, and finally with the pathology of security space and information We will address the country and review the challenges and solutions to meet these challenges.