scholarly journals SMS Text Compression through IDBE (Intelligent Dictionary based Encoding) for Effective Mobile Storage Utilization

2014 ◽  
pp. 86-90
Author(s):  
Parul Bhanarkar ◽  
Nikhil Jha
Keyword(s):  
Operating System ◽  
Mobile Phones ◽  
Operating Systems ◽  
Compression Ratio ◽  
Text Compression ◽  
Storage Space ◽  
Short Forms

Effective storage utilization is the key concept for better working of any operating system. Even operating systems used for mobile phones are not an exception for this fact. This paper proposes a technique for maximizing the utilization of the storage space present in mobile phones. Thus it is important to utilize the space occupied by SMS files in phone’s memory, which take maximum space. The objective involved is designing a semantic dictionary based on Intelligent Dictionary Based Encoding (IDBE) which provides a high text compression ratio to utilize the space in phone’s memory. When SMS file will be received, English words present in the text will be replaced by the respective short words in the designed semantic dictionary. Thus replacing English words by the respective short forms reduces the space occupied by the SMS file. The paper describes the IDBE Compression Techniques for SMS Text Compression.

Fetching Address Book Info of iPhone OS

2011 ◽  
Vol 204-210 ◽  
pp. 1266-1269 ◽  
Author(s):  
Zhi Feng Luo ◽  
Chao Sun ◽  
Shun Xiang Wu
Keyword(s):  
Operating System ◽  
Mobile Phones ◽  
Operating Systems ◽  
Mobile Technology ◽  
Mobile Communications ◽  
Rapid Development ◽  
Smart Phone ◽  
Output File ◽  
New Era ◽  
Address Book

With the rapid development of mobile technology, the mobile phones has gradually become an indispensable part in everybody’s life, and it is replacing the computer’s position step by step. The iPhone is a smart phone made of Apple Company, which opens a new era of software for mobile devices. At the same time, iOS(iPhone’s operating system) has become one of most competitive mobile communications operating systems. The Apple’s protection for security makes the iPhone owners hardly control their phone through the root (highest authority). It is so difficult to manage the information effetely with iPhone, such as contacts’ information or SMS. The paper introduced two approaches to get the contacts’ information in iPhone and restore them with vCard. At last, we managed the output file on MAC.

scholarly journals Three Years Later: A Study of MAC Address Randomization In Mobile Devices And When It Succeeds

2021 ◽  
Vol 2021 (3) ◽  
pp. 164-181
Author(s):  
Ellis Fenske ◽  
Dane Brown ◽  
Jeremy Martin ◽  
Travis Mayberry ◽  
Peter Ryan ◽  
...  
Keyword(s):  
Operating System ◽  
Mobile Phones ◽  
Operating Systems ◽  
Mobile Device ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
User Privacy ◽  
Cross Sectional ◽  
In The Wild ◽  
High Degree

Abstract Mobile device manufacturers and operating system developers increasingly deploy MAC address randomization to protect user privacy and prevent adversaries from tracking persistent hardware identifiers. Early MAC address randomization implementations suffered from logic bugs and information leakages that defeated the privacy benefits realized by using temporary, random addresses, allowing devices and users to be tracked in the wild. Recent work either assumes these implementation flaws continue to exist in modern MAC address randomization implementations, or considers only dated software or small numbers of devices. In this work, we revisit MAC address randomization by performing a cross-sectional study of 160 models of mobile phones, including modern devices released subsequent to previous studies. We tested each of these phones in a lab setting to determine whether it uses randomization, under what conditions it randomizes its MAC address, and whether it mitigates known tracking vulnerabilities. Our results show that, although very new phones with updated operating systems generally provide a high degree of privacy to their users, there are still many phones in wide use today that do not effectively prevent tracking.

scholarly journals Resource management and security issues in mobile phone operating systems: A comparative analysis

2017 ◽  
Author(s):  
Khalid Mahmood Awan ◽  
Muhammad Waqar ◽  
Muhammad Faseeh ◽  
Farman Ullah ◽  
Muhammad Qaiser Saleem
Keyword(s):  
Operating System ◽  
Comparative Analysis ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Operating Systems ◽  
Memory Management ◽  
Human Life ◽  
Main Memory ◽  
Handheld Device ◽  
Memory Cache

Nowadays Mobile phones are becoming more popular in our daily lives. Mobile technology has a great effect on human life. Our daily tasks are dependent on mobile devices. Memory Management (MM), Security and Performance plays an important role in every handheld device specially in mobile phones, which are very much dependent on their operating system (OS). These embedded operating systems are on the driving seat when we talk about efficient and useful memory management and secure handling. Three popular OS in mobile phones are Android, Windows and iOS (iPhone OS). Each OS has its own way of managing the memory and provide it to certain number of applications. Android is an open software available for the people to modify as per their needs. But Windows and iOS operating systems didn’t allow their software as open source. Researchers have done a large amount of work using different mechanisms and decision makings to develop new ways to manage the memory of these OS’s. This work shows a comparative analysis of different memory management and security related techniques in above three operating systems. In this paper, we present the analysis of memory management and security in mobile phone operating systems with respect to apps, main memory, cache memory and virtual memory. Also, we compare the overall performance of these OS’s in terms of MM, security concerns. This study will help in finding better operating system in terms of efficient memory management and security.

Guide for Modelling a Network Flow-Based Detection System for Malware Categorization

2019 ◽  
pp. 150-178
Author(s):  
Joshua Chibuike Sopuru ◽  
Murat Akkaya
Keyword(s):  
Operating System ◽  
Mobile Phones ◽  
Operating Systems ◽  
Network Flow ◽  
Detection System ◽  
Malicious Software ◽  
Android Os ◽  
Definition Of ◽  
Improved Technology ◽  
Over Time

Improved technology has led to significant changes in society over time. This has been accompanied by significant changes in the economy. The improvement in technology has also been accompanied by significant changes in the modeling of network-based systems. This is comprised of significant updates of computer and mobile operating systems. The development of mobile phones and operating systems have endangered essential individual and corporate data over time by making it vulnerable and prone to viruses, worms, and malware. This chapter focuses on reviewing literature that serves as guides for modeling a network flow-based detection system for malware categorization. The Author begins with an in-depth definition of mobile devices and how they have eased the spread of malicious software. Identifying Android OS as the most used operating system, Android OS operating system layer was explained, and the reason for user preferability unveiled. The chapter continued with a review of known malware and their behaviors as has been observed over time.

scholarly journals Resource management and security issues in mobile phone operating systems: A comparative analysis

2017 ◽  
Author(s):  
Khalid Mahmood Awan ◽  
Muhammad Waqar ◽  
Muhammad Faseeh ◽  
Farman Ullah ◽  
Muhammad Qaiser Saleem
Keyword(s):  
Operating System ◽  
Comparative Analysis ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Operating Systems ◽  
Memory Management ◽  
Human Life ◽  
Main Memory ◽  
Handheld Device ◽  
Memory Cache

Nowadays Mobile phones are becoming more popular in our daily lives. Mobile technology has a great effect on human life. Our daily tasks are dependent on mobile devices. Memory Management (MM), Security and Performance plays an important role in every handheld device specially in mobile phones, which are very much dependent on their operating system (OS). These embedded operating systems are on the driving seat when we talk about efficient and useful memory management and secure handling. Three popular OS in mobile phones are Android, Windows and iOS (iPhone OS). Each OS has its own way of managing the memory and provide it to certain number of applications. Android is an open software available for the people to modify as per their needs. But Windows and iOS operating systems didn’t allow their software as open source. Researchers have done a large amount of work using different mechanisms and decision makings to develop new ways to manage the memory of these OS’s. This work shows a comparative analysis of different memory management and security related techniques in above three operating systems. In this paper, we present the analysis of memory management and security in mobile phone operating systems with respect to apps, main memory, cache memory and virtual memory. Also, we compare the overall performance of these OS’s in terms of MM, security concerns. This study will help in finding better operating system in terms of efficient memory management and security.

PERANCANGAN DAN IMPLEMENTASI ALGORITMA ELIAS GAMMA CODE UNTUK MENGKOMPRESI RECORD DATABASE PADA APLIKASI RANGKUMAN PENGETAHUAN UMUM LENGKAP

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Hikka Sartika ◽  
Taronisokhi Zebua
Keyword(s):  
Compression Ratio ◽  
General Public ◽  
Storage Capacity ◽  
Storage Space ◽  
File Size ◽  
Compression Technique ◽  
Code Algorithm ◽  
Database File ◽  
Large File

Storage space required by an application is one of the problems on smartphones. This problem can result in a waste of storage space because not all smartphones have a very large storage capacity. One application that has a large file size is the RPUL application and this application is widely accessed by students and the general public. Large file size is what often causes this application can not run effectively on smartphones. One solution that can be used to solve this problem is to compress the application file, so that the size of the storage space needed in the smartphone is much smaller. This study describes how the application of the elias gamma code algorithm as one of the compression technique algorithms to compress the RPUL application database file. This is done so that the RPUL application can run effectively on a smartphone after it is installed. Based on trials conducted on 64 bit of text as samples in this research it was found that compression based on the elias gamma code algorithm is able to compress text from a database file with a ratio of compression is 2 bits, compression ratio is 50% with a redundancy is 50%. Keywords: Compression, RPUL, Smartphone, Elias Gamma Code

IMPLEMENTASI ALGORITMA LEVENSTEIN DALAM MENGKOMPRESI TEKS PADA APLIKASI RANGKUMAN PENGETAHUAN ALAM LENGKAP

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Winda Winda ◽  
Taronisokhi Zebua
Keyword(s):  
Compression Ratio ◽  
Mobile Application ◽  
Storage Space ◽  
Compression Technique ◽  
The Public ◽  
Natural Knowledge ◽  
Database Size ◽  
Text Database

The size of the data that is owned by an application today is very influential on the amount of space in the memory needed one of which is a mobile-based application. One mobile application that is widely used by students and the public at this time is the Complete Natural Knowledge Summary (Rangkuman Pengetahuan Alam Lengkap or RPAL) application. The RPAL application requires a large amount of material storage space in the mobile memory after it has been installed, so it can cause this application to be ineffective (slow). Compression of data can be used as a solution to reduce the size of the data so as to minimize the need for space in memory. The levestein algorithm is a compression technique algorithm that can be used to compress material stored in the RPAL application database, so that the database size is small. This study describes how to compress the RPAL application database records, so as to minimize the space needed on memory. Based on tests conducted on 128 characters of data (200 bits), the compression results obtained of 136 bits (17 characters) with a compression ratio is 68% and redundancy is 32%.Keywords: compression, levestein, aplication, RPAL, text, database, mobile

scholarly journals An Adaptive Scheduler for Real-Time Operating Systems to Extend WSN Nodes Lifetime

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Roberto Rodriguez-Zurrunero ◽  
Ramiro Utrilla ◽  
Elena Romero ◽  
Alvaro Araujo
Keyword(s):  
Operating System ◽  
Real Time ◽  
Operating Systems ◽  
Research Area ◽  
Rechargeable Batteries ◽  
Wireless Sensor ◽  
Portable Devices ◽  
Wireless Devices ◽  
Changing Environments ◽  
Tasks Scheduling

Wireless Sensor Networks (WSNs) are a growing research area as a large of number portable devices are being developed. This fact makes operating systems (OS) useful to homogenize the development of these devices, to reduce design times, and to provide tools for developing complex applications. This work presents an operating system scheduler for resource-constraint wireless devices, which adapts the tasks scheduling in changing environments. The proposed adaptive scheduler allows dynamically delaying the execution of low priority tasks while maintaining real-time capabilities on high priority ones. Therefore, the scheduler is useful in nodes with rechargeable batteries, as it reduces its energy consumption when battery level is low, by delaying the least critical tasks. The adaptive scheduler has been implemented and tested in real nodes, and the results show that the nodes lifetime could be increased up to 70% in some scenarios at the expense of increasing latency of low priority tasks.

Teaching Embedded Programming through Mobile Games Development in Symbian

2007 ◽  
Vol 44 (4) ◽  
pp. 307-318 ◽  
Author(s):  
Reuben Edwards ◽  
Paul Coulton
Keyword(s):  
Mobile Phones ◽  
Operating Systems ◽  
Mobile Games ◽  
Embedded Programming ◽  
Games Development

As standardised operating systems for mobile phones emerge the development skills required are not merely those of being able to programme in an object-orientated language; rather, they are those of the embedded programming engineer. In this paper we show that embedded programming can be both attractive to students and a novel way of delivering difficult engineering concepts.

INSTALASI SISTEM OPERASI BERBASIS WINDOWS 10 PADA SEKOLAH MAN KISARAN

2020 ◽  
Vol 3 (2) ◽  
pp. 163-168
Author(s):  
Ruri Ashari Dalimunthe ◽  
Riki Andri Yusda ◽  
William Ramdhan
Keyword(s):  
Operating System ◽  
Community Service ◽  
Operating Systems ◽  
Direct Observation ◽  
Computer Lab ◽  
Service Activities ◽  
Computer Labs ◽  
At Home

Abstract: Community service activities entitled "Installation of Operating Systems Based on Windows 10" aims to provide information to students from MAN Asahan about Installing Windows Operating Systems. The method used in this activity is a direct observation of the MAN Asahan school by watching and analyzing the problems or troubleshooting that occurs at the Computer Lab at MAN Asahan. In addition, information on problems in the computer Labs of the school was also carried out by a team of lecturers as the perpetrators of this community service by way of direct interviews with the Teachers and employees who served in the Computer Lab of the MAN Asahan school. The end result of this dedication is how students can repair computers, as well as troubleshooting that occurs on school computers and computers at home, can be overcome alone without having to use computer repair services.Keywords: installation; operating system; Windows 10 Abstrak: Kegiatan pengabdian kepada masyarakat yang diberi judul “Instalasi Sistem Operasi Berbasis Windows 10” bertujuan untuk memberikan informasi kepada siswa dan siswi MAN Asahan tentang Instalasi Sistem Operasi Windows. Metode yang digunakan dalam kegiatan ini adalah observasi langsung ke sekolah MAN Asahan dengan melihat serta menganalisa permasalahan ataupun troubleshooting yang terjadi pada Laboratorium Komputer disekolah MAN Asahan. Selain itu, Informasi permasalahan pada komputer Lab sekolah juga dilakukan tim dosen selaku pelaku kegiatan pengabdian ini dengan cara wawancara langsung kepada Guru dan pegawai yang bertugas di Lab Komputer sekolah MAN Asahan. Hasil akhir dari pengabdian ini adalah bagaimana siswa dan siswi dapat memperbaiki komputer serta troubleshooting yang terjadi pada komputer sekolah maupun komputer dirumah dapat teratasi sendiri tanpa harus memakai jasa perbaikan komputer. Kata kunci: instalasi; sistem operasi;  windows 10

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