Joint Beamforming, Power and Channel Allocation in Multi-User and Multi-Channel Underlay MISO Cognitive Radio Networks
In this paper, we consider a joint beamforming, power, and channel allocation in a multi-user and multi-channel underlay multiple input single output (MISO) cognitive radio network (CRN). In this system, primary users’ (PUs’) spectrum can be reused by the secondary user transmitters (SUTXs) to maximize the spectrum utilization while the intra-user interference is minimized by […]
GDCLUSTER A GENERAL DECENTRALIZED CLUSTERING ALGORITHM
In many popular applications like peer-to-peer systems, large amounts of data are distributed among multiple sources. Analysis of this data and identifying clusters is challenging due to processing, storage, and transmission costs. In this paper, we propose GDCluster, a general fully decentralized clustering method, which is capable of clustering dynamic and distributed data sets. Nodes […]
GDCLUSTER A GENERAL DECENTRALIZED CLUSTERING ALGORITHM
In many popular applications like peer-to-peer systems, large amounts of data are distributed among multiple sources. Analysis of this data and identifying clusters is challenging due to processing, storage, and transmission costs. In this paper, we propose GDCluster, a general fully decentralized clustering method, which is capable of clustering dynamic and distributed data sets. Nodes […]
Efficient Top-k Retrieval on Massive Data
Top-k query is an important operation to return a set of interesting points in a potentially huge data space. It is analyzed in this paper that the existing algorithms cannot process top-k query on massive data efficiently. This paper proposes a novel table-scan-based T2S algorithm to efficiently compute top-k results on massive data. T2S first […]
Effective Key Management in Dynamic Wireless Sensor Networks
Recently, wireless sensor networks (WSNs) have been deployed for a wide variety of applications, including military sensing and tracking, patient status monitoring, traffic flow monitoring, where sensory devices often move between different locations. Securing data and communications requires suitable encryption key protocols. In this paper, we propose a certificateless-effective key management (CL-EKM) protocol for secure […]
Discovery of Ranking Fraud for Mobile Apps
Ranking fraud in the mobile App market refers to fraudulent or deceptive activities which have a purpose of bumping up the Apps in the popularity list. Indeed, it becomes more and more frequent for App developers to use shady means, such as inflating their Apps’ sales or posting phony App ratings, to commit ranking fraud. […]
DETECTION AND RECTIFICATION OF DISTORTED FINGERPRINTS
Elastic distortion of fingerprints is one of the major causes for false non-match. While this problem affects all fingerprint recognition applications, it is especially dangerous in negative recognition applications, such as watchlist and deduplication applications. In such applications, malicious users may purposely distort their fingerprints to evade identification. In this paper, we proposed novel algorithms […]
DATA-DRIVEN COMPOSITION FOR SERVICE-ORIENTED SITUATIONAL WEB APPLICATIONS
This paper presents a systematic data-driven approach to assisting situational application development. We first propose a technique to extract useful information from multiple sources to abstract service capabilities with set tags. This supports intuitive expression of user’s desired composition goals by simple queries, without having to know underlying technical details. A planning technique then exploits […]
DATA-DRIVEN COMPOSITION FOR SERVICE-ORIENTED SITUATIONAL WEB APPLICATIONS
This paper presents a systematic data-driven approach to assisting situational application development. We first propose a technique to extract useful information from multiple sources to abstract service capabilities with set tags. This supports intuitive expression of user’s desired composition goals by simple queries, without having to know underlying technical details. A planning technique then exploits […]
CONTINUOUS AND TRANSPARENT USER IDENTITY VERIFICATION FOR SECURE INTERNET SERVICES
Session management in distributed Internet services is traditionally based on username and password, explicit logouts and mechanisms of user session expiration using classic timeouts. Emerging biometric solutions allow substituting username and password with biometric data during session establishment, but in such an approach still a single verification is deemed sufficient, and the identity of a […]
Collision Tolerant and Collision Free Packet Scheduling for Underwater Acoustic Localization
To implement the system to solve the joint problem of packet scheduling and self-localization in an underwater acoustic sensor network with randomly distributed nodes. In terms of packet scheduling, our goal is to minimize the localization time, and to do so we consider two packet transmission schemes, namely a collision-free scheme (CFS), and a collision-tolerant […]
CLOUD-BASED MULTIMEDIA CONTENT PROTECTION SYSTEM
We propose a new design for large-scale multimedia content protection systems. Our design leverages cloud infrastructures to provide cost efficiency, rapid deployment, scalability, and elasticity to accommodate varying workloads. The proposed system can be used to protect different multimedia content types, including 2-D videos, 3-D videos, images, audio clips, songs, and music clips. The system […]
BRACER A DISTRIBUTED BROADCAST PROTOCOL IN MULTI-HOP COGNITIVE RADIO AD HOC NETWORKS
Broadcast is an important operation in wireless ad hoc networks where control information is usually propagated as broadcasts for the realization of most networking protocols. In traditional ad hoc networks, since the spectrum availability is uniform, broadcasts are delivered via a common channel which can be heard by all users in a network. However, in […]
A Methodology for Extracting Standing Human Bodies From Single Images
Segmentation of human bodies in images is a challenging task that can facilitate numerous applications, like scene understanding and activity recognition. In order to cope with the highly dimensional pose space, scene complexity, and various human appearances, the majority of existing works require computationally complex training and template matching processes. We propose a bottom-up methodology […]
The Pixel 3a joins the Android Enterprise Recommended lineup
Android Enterprise Recommended continues to shape how organizations choose devices for their teams. According to a recent HMD smartphone purchase survey, 56 percent of IT decision makers have decided to only choose Android Enterprise Recommended devices for their business. Android Enterprise Recommended helps businesses select devices with confidence from a breadth of options, so they […]
The Pixel 3a joins the Android Enterprise Recommended lineup
Android Enterprise Recommended continues to shape how organizations choose devices for their teams. According to a recent HMD smartphone purchase survey, 56 percent of IT decision makers have decided to only choose Android Enterprise Recommended devices for their business. Android Enterprise Recommended helps businesses select devices with confidence from a breadth of options, so they […]
PHP MySQL REST API for Android
PHP REST API backed up with a MySQL database is a very common schematic of an Enterprise mobile application. When the scenario requires data to be stored in a centralized manner, then this architecture should be used. Otherwise, the local database in the mobile can be used for the storage and retrieval of information. […]
PHP MySQL REST API for Android
PHP REST API backed up with a MySQL database is a very common schematic of an Enterprise mobile application. When the scenario requires data to be stored in a centralized manner, then this architecture should be used. Otherwise, the local database in the mobile can be used for the storage and retrieval of information. […]
Migrating from PHP 4 to PHP 5.0.x
What has changed in PHP 5.0.x ¶ PHP 5 and the integrated Zend Engine 2 have greatly improved PHP’s performance and capabilities, but great care has been taken to break as little existing code as possible. So migrating your code from PHP 4 to 5 should be very easy. Most existing PHP 4 code should be […]
Develop using the Android SDK and Android Studio
Android Things lets you experiment with building devices on a trusted platform, without previous knowledge of embedded system design: Access hardware such as displays and cameras natively through the Android framework Connect your apps with Google services Integrate additional peripherals through the Peripheral I/O APIs (GPIO, I2C, SPI, UART, PWM) Use the Android Things Console to push over-the-air […]