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In this paper, the successive cancellation (SC) heap polar decoding scheme is firstly proposed to reduce the complexity. Unlike SC list decoder which keeps same length paths, SC heap decoding stores different length paths in a heap and always decodes the global optimal path in the root. It has been strictly proved that SC heap decoding is superior to SC stack decoding because the time complexity...
We present the AP16-OL7 database which was released as the training and test data for the oriental language recognition (OLR) challenge on APSIPA 2016. Based on the database, a baseline system was constructed on the basis of the i-vector model. We report the baseline results evaluated in various metrics defined by the AP16-OLR evaluation plan and demonstrate that AP16-OL7 is a reasonable data resource...
An examination of existing studies in the area of Routing Protocol for Low-Power and Lossy Networks (RPL) implementation in wireless sensor networks (WSNs) reveals a consistent approach taken of optimal node distribution. This in order to best evaluate networking metrics such as Packet Delivery Ratio (PDR), latency and energy consumption. The tests detailed in this paper differ from previous work,...
Wireless communications and mobile web in the domain of mobile commerce (mcommerce) are growing and gaining significant momentum throughout the internet. Researchers all over the world are actively studying the standardization to understand the factors that affects the acceptance of upcoming innovations and development in mcommerce. The digitalization and its advancements have ensured that, until...
In recent years, as mobile devices increase, the demands for measuring the available bandwidth in a wireless network increase more and more to provide high quality network services. The available bandwidth is one of the most important parameters to determine the sending rate in WAN optimization. Pathload [2] is a technique to measure the available bandwidth by detecting the point where the receiving...
RPL is the routing protocol for low-power and lossy networks and has recently been considered as the standard routing protocol for IPv6 based wireless sensor networks using the IEEE 802.15.4 protocol. RPL is oriented towards supporting multi-point to point communications in which multiple points typically communicate with one sink node that considered the root of the RPL tree. RPL aims to minimize...
A case study on Colorado Technical University's development and release of its CTU Mobile app for students. This paper includes mobile user research findings, functionality objectives, KPIs underway to evaluate adoption and impact, and best practices for universities considering a mobile app.
In the last few years, there is a change of backend paradigm for modern mobile applications (Apps). Traditionally, one has to develop a complete system, from the mobile front-end to the backend. This practice has evolved much with the recent introduction of the cloud-based backend to the mobile service development community. This paper discusses and studies selected Mobile-Backend-as-a-Service (mBaaS)...
Mobile ad hoc networking may be used to accomplish different tasks at several applications fields with a variety of purposes as healthy care, defense, crisis management and others emergence situations. In common, they all require quick deployment, dynamic communication and security assurance. Although a lot of effort has been taken concerning the security aspect, it is hard to achieve information-theoretically...
Dummy - Online is the most popular mobile Free-To-Play (F2P) card game in Thailand. Part of the reason is that the marketing team has created many successful marketing campaigns for the game since its inception in 2012. Though there had been many marketing campaigns, the publisher has not been able to effectively analyze the impact of marketing campaigns to the userbase and their gameplay behaviors...
Gamma Deployment is a metric for evaluating the distribution of roadside units in vehicular networks in terms of two parameters: a) the inter-contact time between vehicles and the infrastructure, and, b) the share of vehicles that must respect the inter-contact time guarantees. We envision the use of the Gamma Deployment metric when the network designer intends to distribute check-points along the...
Biometric recognition is nowadays widely used in smartphones, making the users' authentication easier and more transparent than PIN codes or patterns. Starting from this idea, the EU project PIDaaS aims to create a secure authentication system through mobile devices based on voice and face recognition as two of the most reliable and user-accepted modalities. This work introduces the project and the...
The interactive nature of the Internet offers many opportunities to increase the efficiency of online shopping by improving availability of product information, enabling direct multi-attribute comparisons, and reducing buyer search costs. A great body of research focuses on how consumers shop online or why and how online shopping impacts urban development, but the understanding of mutual influence...
The evolution of mobile systems from hardware and software standpoints, and their increased use in our daily life has direct implications on all the sub-systems of a smartphone. The storage sub-system, in particular, has changed deeply over the years (in terms of density, power consumption, functionalities, form factor, throughput, and latency) and has become one of the core systems in a smartphone...
Emergency situations in a mining environment have the potential for the loss of human life. Tracking mobile assets and personnel can significantly improve the safety of all miners. Existing distributive localization algorithms are not well suited for a mobile asynchronous mine environment. We propose the Mobile Cooperative Localization Algorithm (MCLA) to increase the accuracy and number of nodes...
We study in this work user impatience by adopting a realistic realization: a user gets impatient when its throughput falls below a certain threshold for a given patience duration. We model such a behavior in a cellular network, transporting elastic flows, for a realistic user configuration with random arrivals, following a Poisson process, and departure after a finite duration, either upon transfer...
Indoor localization has been an active research field for decades. Location determination is normally accomplished using the Global Positioning System (GPS) for outdoor environment. For indoor environment GPS does not work due to the lack of the sight line to satellite. Several technologies are deployed to construct an efficient indoor positioning system. A compromise between cost, accuracy and time...
MANET networks (Mobile Ad hoc Networks) are a sub class of mobile and wireless networks. In this type of network, all the nodes are mobile and no fixed infrastructures are considered existing. Among the challenges of the MANET, the stability and the durability of the selected paths in the network. In a previous work, we proposed a solution to this challenge by taking into account the mobility of nodes...
In this article we describe an approach for object detection and pose estimation from stereo RGB frames for robot manipulation in manufacturing scenarios. This solution was developed in the framework of the second challenge of the EuRoC project, and meets the need of a registration method invariant to the view perspective and robust to the structural symmetries and ambiguities of the target objects...
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