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internet-connectivity
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Incentive design and market evolution of mobile user-provided networks
, Article Proceedings - IEEE INFOCOM, 26 April 2015 through 1 May 2015 ; Volume 2015-August , 2015 , Pages 498-503 ; 0743166X (ISSN) ; 9781467371315 (ISBN) ; Gao, L ; Huang, J ; Khalaj, B. H ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2015
Abstract
An operator-assisted user-provided network (UPN) has the potential to achieve a low cost ubiquitous Internet connectivity, without significantly increasing the network infrastructure investment. In this paper, we consider such a network where the network operator encourages some of her subscribers to operate as mobile Wi-Fi hotspots (hosts), providing Internet connectivity for other subscribers (clients). We formulate the interaction between the operator and mobile users as a two-stage game. In Stage I, the operator determines the usage-based pricing and quota-based incentive mechanism for the data usage. In Stage II, the mobile users make their decisions about whether to be a host, or a...
A captcha system for nintendo DS
, Article Proceedings of the 7th ACM SIGCOMM Workshop on Network and System Support for Games, NetGames'08, 21 October 2008 through 22 October 2008, Worcester, MA ; 2008 , Pages 104-105 ; 9781605581323 (ISBN) ; Shirali Shahreza, S ; Sharif University of Technology
2008
Abstract
In some websites, it is necessary to distinguish between human users and computer programs which is known as CAPTCHA (Completely Automated Public Turing test to tell Computers and Human Apart). CAPTCHA methods are mainly based on the weaknesses of OCR systems while using them are undesirable to human users and cannot be used in some devices such as devices without keyboard. Nintendo DS is a popular handheld game console which was released in 2004. Nowadays, facilities such as the Internet connection are added in new game consoles and they are not merely used for playing games. Nintendo DS is also capable of connecting to the Internet by using the Nintendo DS Browser. But Nintendo DS Browser...