Search results for " networking"
showing 10 items of 1264 documents
Collaborative Mobile Clouds: An Energy Efficient Paradigm for Content Sharing
2018
On the way toward enabling efficient content distribution, reducing energy consumption and prolonging battery life of mobile equipment, an emerging paradigm, i.e., mobile cloud, which is based on content distribution, was proposed. As a mobile platform that is oriented toward content distribution, mobile cloud is also foreseen as an energy-efficient solution for future wireless networks. The benefits of using CMC for content distribution or distributed computing from social networking perspectives have been studied earlier. In this article, we first present the concepts of CMC and then discuss the energy-efficiency benefits from the system-level point-of-view as well as open challenges in d…
Classification of Solutions to the Minimum Energy Problem in One Dimensional Sensor Networks
2016
We classify of the minimum energy problem in one dimensional wireless sensor networks for the data transmission cost matrix which is a power function of the distance between transmitter and receiver with any real exponent. We show, how these solutions can be utilized to solve the minimum energy problem for the data transmission cost matrix which is a linear combination of two power functions. We define the minimum energy problem in terms of the sensors signal power, transmission time and capacities of transmission channels. We prove, that for the point-to-point data transmission method utilized by the sensors in the physical layer, when the transmitter adjust the power of its radio signal t…
A CUDA-based implementation of an improved SPH method on GPU
2021
We present a CUDA-based parallel implementation on GPU architecture of a modified version of the Smoothed Particle Hydrodynamics (SPH) method. This modified formulation exploits a strategy based on the Taylor series expansion, which simultaneously improves the approximation of a function and its derivatives with respect to the standard formulation. The improvement in accuracy comes at the cost of an additional computational effort. The computational demand becomes increasingly crucial as problem size increases but can be addressed by employing fast summations in a parallel computational scheme. The experimental analysis showed that our parallel implementation significantly reduces the runti…
Service Provisioning and User Association for Heterogeneous Wireless Railway Networks
2017
In addition to comforting passengers' journey, the modern railway system is responsible to support a variety of on-board Internet services to meet the passenger's demands on seamless service provisioning. In order to provide wireless access to the train, one idea attracting increasing attention is to deploy a series of track-side access points (TAPs) with high-speed data rates along the rail lines dedicated to the broadband mobile service provisioning on board. Due to the heavy data traffic flushing into the base stations (BSs) of the cellular networks, TAPs act as a complement to the BSs in data delivery. In this paper, we focus on the TAP association problem for service provisioning in a …
Joint Sub-Carrier and Power Allocation for Efficient Communication of Cellular UAVs
2020
| openaire: EC/H2020/857031/EU//5G!Drones Cellular networks are expected to be the main communication infrastructure to support the expanding applications of Unmanned Aerial Vehicles (UAVs). As these networks are deployed to serve ground User Equipment (UEs), several issues need to be addressed to enhance cellular UAVs’ services. In this paper, we propose a realistic communication model on the downlink, and we show that the Quality of Service (QoS) for the users is affected by the number of interfering BSs and the impact they cause. The joint problem of sub-carrier and power allocation is therefore addressed. Given its complexity, which is known to be NP-hard, we introduce a solution based …
Transportation in the Philippines
2017
Linking the islands of the archipelago was traditionally done by boat. Today, ships are still used by millions of people to cross straits between the major islands, since there are no bridges except from Leyte to Samar. Cebu lies at the center of the ferries network, while small bangkas bring people to remote islets or through river mouths and harbors. The implementation of the Strong Republic Nautical Highway aims at speeding up and smoothing transfers from island to island. The port of Manila, a small player in the dynamic West Pacific rim, may be relieved from congestion with the rise of Batangas and Subic. Aviation, centered at the saturated Manila airport, has grown quickly since dereg…
Edukacyjne aspekty energetycznej globalizacji
2018
Wokół handlu energią i surowcami do jej produkcji skupiają się wszystkie klasyczne problemy związane z procesem globalizacji. Problemy ekologiczne wynikające z produkcji energii elektrycznej przekraczają granice polityczne, a realizacja celów pakietu klimatycznego oraz wdrażanie zasad zrównoważonego rozwoju napotyka na liczne bariery i jest szeroko kontestowane przez niektóre grupy społeczne. W związku z tym tworzy się przestrzeń do pogłębionych działań edukacyjnych i promocyjnych na ich rzecz. W prezentowanej pracy skupiono się na edukacyjnych aspektach związanych z tą problematyką oraz na wykorzystaniu w edukacji nieformalnej serwisów społecznościowych przy promowaniu zasad zrównoważonego…
Verkkohuijausten tyypit sosiaalisessa mediassa
2017
Types of online scams in social media. In this thesis, types of online scams in social media are examined first by defining online scams and then applying the principles of them to social media setting. The thesis is a literature review in which it was found that in social media there are similar types of scams than outside of it. These types of scams were phishing scams, scams related to social engineering malware attacks and 419 -scams. There were a couple of scam scenarios that were not detected outside of social media context due to social networking site required as a platform for the scams. These were scams involving impersonation of celebrities or friends, services offering followers…
Requirements for Energy Efficient Edge Computing: A Survey
2018
Internet of Things is evolving heavily in these times. One of the major obstacle is energy consumption in the IoT devices (sensor nodes and wireless gateways). The IoT devices are often battery powered wireless devices and thus reducing the energy consumption in these devices is essential to lengthen the lifetime of the device without battery change. It is possible to lengthen battery lifetime by efficient but lightweight sensor data analysis in close proximity of the sensor. Performing part of the sensor data analysis in the end device can reduce the amount of data needed to transmit wirelessly. Transmitting data wirelessly is very energy consuming task. At the same time, the privacy and s…
Latency-Oblivious Distributed Task Scheduling for Mobile Edge Computing
2018
Mobile Edge Computing (MEC) is emerging as one of the effective platforms for offloading the resource- and latency-constrained computational services of modern mobile applications. For latency- and resource-constrained mobile devices, the important issues include: 1) minimize end-to-end service latency; 2) minimize service completion time; 3) high quality-of-service (QoS) requirement to offload the complex computational services. To address the above issues, a latencyoblivious distributed task scheduling scheme is designed in this work to maximize the QoS performance and goodput for the MEC services. Unlike most of the existing works, we consider the latency-oblivious property of different …