The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Modern operating systems are complex system software, with a variety of interfaces that make developing software for them simple and more importantly, ensure they execute efficiently and fulfill high performance requirements. One of the fundamental techniques used here is Virtual Memory Management (VMM) that summarily allocates virtual memory segments to the executing processes. Due to practical and...
To write data on a disk block or to read data from a disk block, three factors are considered: seek time, rotational delay and actual data transfer time. The seek time is the time taken to move the arm to the proper cylinder and the rotational delay is the time for the proper sector to rotate under the head. The seek time dominates the other two factors by a wide margin. Thus, disk scheduling algorithms...
In multitasking operating system, processes don't run simultaneously, but switch very expeditiously. Thus, all the processes share the CPU time. It is the job of the scheduler to select a process from the ready queue and place it into the memory based a particular strategy known as Scheduling Algorithm. There exist many Scheduling Algorithms such as First Come First Serve (FCFS), Shortest Job First...
In CPU scheduling various algorithms exist like FCFS (First come first serve), SJF (Shortest job first), SRTF (Shortest remaining time first), Priority Scheduling, Round Robin (RR), MLQ (Multilevel queue), MLFQ (Multilevel feedback queue) scheduling. Multilevel Feedback Queue (MLFQ) algorithm allows the switching of processes between queues depending on their burst time. The processes switch to the...
Text summarization combines the process of POS tagging, term frequency and topical analysis. All these together are used to produce insightful summary of the document/documents. The concise version of the text document can be made using the concept of frequency of the terms and inverse frequency of documents. Text summarization is useful for bring the short story of all the newspaper articles, email...
Network virtualization(NV) provides containers to separate the tasks but share hardware resources and thus leads to reduced cost, increased network service deployment and efficiency of network. This virtual network is separated from physical hardware and can be used for performing operations like creation and deletion. Software-Defined Networking (SDN) separates the control plane from the data-plane...
Today, the internet has became most convenient and widely used media for people exchanging information and doing business over the internet such as accessing web based emails, online auctions or banking sites. But nowadays, accessing the internet is faced with many challenges. One of the most important challenges is to ensure security with vital role to provide security in websites. The text passwords...
This paper presents an effective and efficient feature detection method based on eyes location. Here it is assumed that face is already detected. Then algorithm detects the position of pupils in the face image using geometric relation between the face and the eyes. Finally the algorithm normalizes the orientation and grayscale of the face image. The experimental results demonstrated that this algorithm...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.