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Shannon Entropy, for discrete-valued random variables, plays important roles in information theory [1], especially for the transmission, processing and storage of information and also in measure theory with major impact to data integration and probabilistic estimation. The purpose of this paper is to present a new bound for the Shannon Entropy, by first developing a refinement of Jensen's inequality...
The paper presents a research towards the combination of text mining and time series analysis in order to develop tools for the analysis of sequences of time-related documents, like chat logs. It is described an experiment of using such techniques applied on chats, for determining correlations among most frequently used words, considering their time occurrences and computing the correlations between...
Cloud enterprise architectures (CEA) meet all the business needs of an enterprise architecture. The architect's dilemma represents the decision what fits where. As a conclusion to previous research we decided to fit CEA into the enterprise architectures of organizations. Considering this approach, architectures developed can be abstracted enough to be reusable.
In this article is described the development of soft and hard environment for integrating individual cluster systems in a single, integrate parallel HPC systems. The elaborated applications can be ported to the resources of the integrated HPC system. To acquire the necessary theoretical and practical skills on using regional HPC clusters, currently it is preparing an interactive educational course...
A User-friendly, Innovative Layout and Routing Algorithm for Diagrams are used in a variety of fields such as FPGA design as a means to represent workflows and concepts and require dedicated algorithms which can produce easy to understand results. Available software is clunky, at times it can be really slow and will often result in layouts which are hard to read and understand. The main issue of layout...
The degree of pollution in the atmosphere is increasing, leading to more and more people being affected by breathing health issues. However, people are increasingly aware of the need to monitor their environment. We propose a platform that leverages a Wearable Sensor Device and Mobile Devices to collect large amounts of air quality data on a central Real-Time Data Processing System that can process...
This paper analyzes, from the polyphonic perspective used in the PolyCAFe system, the interactions among a group of high school students who, in parallel with a classroom style of interaction, use the instant messaging system Yahoo Messenger to develop a sorting algorithm. This type of analysis aims at finding the main topics in a chat conversation, the evaluation of utterances and their implicit...
In this paper we describe our experience in assembling an optical circuit using mixed vendors optical DWDM environment. Alien wavelength is used to establish a 100 Gbps optical circuit between routing equipment, which in our case also serves as source and destination of a specific tunable wavelength, within RoEduNet DWDM network. The optical network is using electronic compensation of dispersion at...
In the recent years there is a prodigious research interest in harvesting energy for powering various equipment. With the explosive development of the IoT - Internet of Things concept or newer IoE - Internet of Everything, independent power supply issue becomes more and more challenging. The article describes the operation of a sensor node powered by harvesting energy from unconventional energy sources...
Today's IT organizations who act as service providers are under increasing pressure to keep up with the continuous and growing demand for IT services. Through the shift from interactive, manual processes to automated, self-deployment of resources, the providers can increase the efficiency of delivering on-demand services. Virtualized resources, particularly virtual machines and containers that are...
The efficient functioning of grid data centers is one of the most important factor that preoccupies the academic world (professors, researchers, PhD students and so on).
Development of National research and educational networking infrastructure and services is the basis of modern eInfrastructure components operation. The paper describes current state, development prospects of scientific computing infrastructures and their users' communities in Moldova. Computing infrastructures (Grid, HPC, Cloud, etc.) have becoming the backbone of those fields of science that require...
The work aims to identify the main competencies in the IT domain in Romania and the relations between them. It is a first step towards a comprehensive study of the Romanian IT job market. The study is performed on the LinkedIn profiles of over 15000 people working in the IT domain.
Mobile Gateway forWireless Sensor Networks utilizing drones Wireless Sensor Networks have good uses in applications running in remote locations, where maintenance is difficult. Wireless sensor network islands often need a connection with a gateway in order to communicate with the outside world, but this cannot be provided in all circumstances. A different approach to connecting wireless sensor networks...
TEMPO aims to provide an implementation of a centralized control solution for the traffic within a network. TEMPO is a Java application developed in conjunction with OnePK framework, Cisco's response to Software Defined Networking revolution. Even if OnePK is in standardization process and it is not a mature technology, it already offers enough resources to build an innovative application that resolves...
Generally, the multicast routing protocols for mobile ad hoc networks (MANETs) build and maintain a group shared (tree or mesh-based) multicast delivery structure, which results in inefficient propagation of multicast traffic. In this article, a source tree based multicast routing protocol CAMT is proposed. CAMT employs only a fraction of nodes (core nodes) to disseminate their own and their neighbors'...
Despite numerous available devices and applications for to-do-lists and alarms, none of them manage to fulfill the role of an efficient medication enforcement system. As medical emergency and even accidental deaths are caused by wrong medication administration are constantly on the rise, there is a growing need for effective medication enforcement architecture. Our work addresses the two most pressing...
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