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One of key technologies for future large-scale location-aware services in access is a scalable indoor localization technique. In this paper, we report preliminary results from our investigation on the use of deep neural networks (DNNs) for hierarchical building/floor classification and floor-level location estimation based on Wi-Fi fingerprinting, which we carried out as part of a feasibility study...
The protection of content confidentiality as well as of access and pattern confidentiality of data moved to the cloud have been recently the subject of several investigations. The distributed shuffle index addresses these issues by randomly partitioning data among three independent cloud providers. In this paper, we describe the implementation of the distributed shuffle index in the high-performance...
Remote Laboratories are used in educational settings as tools to give students access to experiments that are not physically available to them at their institutions. During implementation, problems such as: bandwidth, security or limitations in terms of the usability, have been identified. This paper proposes an approach that integrates, what we call, a Smart Adaptive Remote Laboratory (SARL) with...
On the financial side, a key factor for the success of a smart-city initiative is the low cost of the sensors. On the technical side, the units need to be flexible enough to cover different roles, and to be reconfigurable for a distinct target. The capability to interact with an already deployed infrastructure, like a preexistent web-server, is a favorable feature from both the financial and technical...
In the near future, Internet of Things (IoT) will realize that sensors and processors embedded in every device and communicate with each other. In order to realize smart home, it is desirable for home appliances to autonomously communicate with each other, and do actions. To this end, we propose distributed autonomous control framework of home appliances based on event driven architecture where each...
Looking at the end-to-end processing, typical software-intensive systems are built as a system-of-systems where each sub-system specializes according to both the business and technology perspective. One challenge is the integration of all systems into a single system — crossing technological and organizational boundaries as well as functional domains. To facilitate the successful integration we propose...
Cloud database management systems (DBMSs) often decouple database instances from physical storage to provide reliability and high availability to users. This design can robustly handle a single point of failure, but needs substantial effort to attain good performance. In this paper, we analyze the decoupled architecture and present important optimization issues that we faced in implementing the design...
Like many other code teams, the developers of the Mercury Monte Carlo Transport code at Lawrence Livermore National Laboratory are being forced by the arrival of GPUbased supercomputers to substantially refactor their application to obtain acceptable performance on new architectures. This paper describes how we have designed, developed, and used Quicksilver, a proxy application for Mercury, to assist...
The widely accepted block-matching technique, which is required to identify motion vectors, fails in cases in which texture is not existent. In [1], we proposed a hardware-oriented cellular-automaton algorithm that generates spatial patterns on textureless objects and backgrounds, aiming at motion-vector estimation of textureless moving objects. This demonstration presents a field-programmable gate...
A compact sub-1V class-AB operational amplifier to be used as a building block for low-voltage switched-capacitor architectures is presented. The proposed amplifier works properly with supply voltages in the range 0.9 V–1.4 V, providing a gain-bandwidth product of 8 MHz, and a maximum output short-circuit current of 1 mA with 120 μA quiescent supply current. The performances of the operational amplifier...
The experience of cloud-based computing technologies use in the Smart City class design is analyzed. In the considerable part of applications in the Smart City class design informational technologies of cloud-based computing combined with such technologies as GRID, IoT, BigData, OLAP, GIS are used. At the same time complex solutions systematically considering peculiarities of defined technologies...
Sketching is an important activity for understanding, designing, and communicating different aspects of software systems such as their requirements or architecture. Often, sketches start on paper or whiteboards, are revised, and may evolve into a digital version. Users may then print a revised sketch, change it on paper, and digitize it again. Existing tools focus on a paperless workflow, i.e., archiving...
We present the Configurable Advanced Verification of Software (CAVS), a prototype tool that automatically generates an efficient set of test cases from descriptions of required interface behavior based on Unified Modeling Language (UML) artifacts. The input to CAVS consists of enhanced UML activity diagrams that define the required behavior of a software component as observed on its interfaces. CAVS...
The work is focused on intellectualization of the development process of integrated expert systems basing on the the problem-oriented methodology and AT-TECHNOLOGY workbench. Basic intelligent software environment components like intelligent planner, reusable components, standard design procedures are described. Development process with use of intelligent technology is reviewed. An example development...
Synchronous Dataflow (SDF), a popular subset of the dataflow programming paradigm, gives a well structured formalism to capture signal and stream processing applications. With data-parallel architectures becoming ubiquitous, several frameworks leverage the SDF formalism to map applications to parallel architectures. But, these frameworks assume that the Synchronous Dataflow graphs (SDFGs) under consideration...
As wireless and telecommunicaton infrastructure communications have been integrated into modern vehicle systems (i.e., infotainment systems and vehicle to vehicle systems), the security implications on the relatively unchanged underlying network protocols inside the vehicles are investigated by researchers and industrial experts in the corresponding domain. Some researchers have achieved the investigation...
We introduce a new fashion search protocol where attribute manipulation is allowed within the interaction between users and search engines, e.g. manipulating the color attribute of the clothing from red to blue. It is particularly useful for image-based search when the query image cannot perfectly match users expectation of the desired product. To build such a search engine, we propose a novel memory-augmented...
Heterogeneity of current software solutions for 5G is heading for complex and costly situations, with high fragmentation, which in turn creates uncertainty and the risk of delaying 5G innovations. This context motivated the definition of a novel Operating Platform for 5G (5G-OP), a unifying reference functional framework supporting end-to-end and multi-layer orchestration. 5G-OP aims at integrated...
With computing systems becoming ubiquitous, numerous data sets of extremely large size are becoming available foranalysis. Often the data collected have complex, graph based structures, which makes them difficult to process with traditional tools. Moreover, the irregularities in the data sets, and in the analysis algorithms, hamper the scaling of performance in large distributedhigh-performance systems,...
The advantage of prototype based learning vector quantizers are the intuitive and simple model adaptation as well as the easy interpretability of the prototypes as class representatives for the class distribution to be learned. Although they frequently yield competitive performance and show robust behavior nowadays powerful alternatives have increasing attraction. Particularly, deep architectures...
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