Vladimir Sobeslav

Security Issues of Mobile Application Using Cloud Computing

Security issues of the mobile application using cloud computation services are discussed in this paper. Communication between smart phone as a client on the one side and cloud server on the other is described. Security analyse for proposed solution of the health monitoring application is introduced as well. Data about health of the person are one of the most confidential thus need to be secured against different types of threats. Proposed solution is based on the smartphone as a client gathering data and the cloud servers as a computational platform for data storage and analysing. The sensors embedded in the smart phone measure data about monitored person then are partly processed and sent to the server by the internet connection for the deeper analysis.

Cloud based solution for mobile healthcare application

Design of the Watch Dog health care application is presented in this paper. Solution is based on the client running on the smartphone and the server side running in the cloud. Sensors embedded in the smartphone are used for the measurement of the different information about the monitored person such as position, temperature, breath frequency etc. Basic algorithms evaluating current persons health status run on the smartphone. Measured data are sent to the second part of the application running in the cloud for deeper analysis. Suitability of the cloud solution for this application is discussed in this paper.

Communication protocols in substation automation and IEC 61850 based proposal

The automation of control systems of substations in the energy industry uses a variety of specialized standards, technologies and protocols. Among the most frequently used belong MODBUS, IEC60870, DNP3 and IEC61850 protocols. The present paper analyses and compares approaches to data communication among the abovementioned protocols with the main focus on modern standard IEC61850. The paper was created on the basis of experience while implementing data communications for ČEPS a.s., the national distributor in the Czech Republic.

OpenSource Automation in Cloud Computing

This chapter covers basic OpenSource automation and configuration management tools that can be used to alleviate common operations tasks and processes in cloud systems. It shows a quick survey of major cloud computing solutions and introduces simple abstraction layer for the management of physical and virtual resources. The last chapter covers some of the common automation scenarios from both cloud computing provider and consumer perspectives and their possible open-source implementations.

Use of cloud computing in biomedicine

Nowadays, biomedicine is characterised by a growing need for processing of large amounts of data in real time. This leads to new requirements for information and communication technologies (ICT). Cloud computing offers a solution to these requirements and provides many advantages, such as cost savings, elasticity and scalability of using ICT. The aim of this paper is to explore the concept of cloud computing and the related use of this concept in the area of biomedicine. Authors offer a comprehensive analysis of the implementation of the cloud computing approach in biomedical research, decomposed into infrastructure, platform and service layer, and a recommendation for processing large amounts of data in biomedicine. Firstly, the paper describes the appropriate forms and technological solutions of cloud computing. Secondly, the high-end computing paradigm of cloud computing aspects is analysed. Finally, the potential and current use of applications in scientific research of this technology in biomedicine is discussed.

HPC Cloud Technologies for Virtual Screening in Drug Discovery

Increasing development in computer technologies, storage capabilities, networking, and multithreading as well as accelerated progression of computational chemistry methods in past decades have allowed performing advanced virtual screening (VS) methods to assist drug discovery. By employing virtualized computer resources and suitable middleware it is possible to support growing computer demands of VS with flexible cloud services adapted for High Performance Computing (HPC). This paper resumes the possibilities of cloud services for VS applications in drug discovery and shows possible track to move VS computing software to cloud environment.

Cost–benefit analysis – evaluation model of cloud computing deployment for use in companies

ABSTRACT The use of cloud computing services appears to offer significant cost advantages. The most frequently mentioned advantages include investment and operating costs saving, high elasticity of services as well as increased flexibility of certain business processes. On the other hand, the adoption of cloud computing in enterprise environments is non-trivial. Understanding the organizational benefits and drawbacks is far from straightforward. The adoption of cloud computing results in a considerable amount of organizational change that will affect employees. The aim of this contribution is to conduct and describe the evaluation model of cloud computing that would be applicable in business practice for evaluating the effectiveness of such investments. The target users of this model are primarily people in companies with decision-making power in the investment field. The appropriate starting point based on the multi-criteria evaluation was the cost–benefit analysis (CBA) approach for cloud computing (CC). A multi-method approach (systematic literature review, analysis of real cloud computing services, expert interview, case study) was applied in order to develop and evaluate the formal model. We found that our model fits the practical requirements and supports decision-making in cloud computing.

Statistics and analysis of service availability in cloud computing

This paper focuses on solving the problem of measuring and monitoring service availability in Cloud Computing. It introduces existing Service-Level Agreement (SLA) monitoring approaches and frameworks. On this basis, it presents a new approach which monitors cloud service availability from the client-centric point of view. This approach was designed, implemented and tested on a sample cloud environment. The measured data is statistically analyzed to obtain results which are as accurate as possible. The entire process of monitoring and statistical analysis is automated so that it can be incorporated in further research to create a complete solution for managing SLA in Cloud Computing from a client-centric perspective.

Remote laboratory for computer networks

The article introduces the reasons for realisation of the remote laboratory of computer networks which originate from the comparisons of the alternatives of working with the specialised networking hardware. These use the principle of virtualisation or simulation of such devices as an alternative for obtaining competencies from the area of computer networks. Due to this reason, this article discusses other technical solutions and the analysis of usability of such solutions is conducted. For a maximal efficiency of the networking hardware utilization in laboratories it is necessary to make it fully available for students which is the 24/7 regime. This option can be executed using secure technologies and protocols for distant accessing of laboratory hardware. This solution, which is based on using console controllers and single utility interface, is introduced and described in detail in the following paragraphs. Moreover, from the analysis of the pilot operation of remote access to the laboratory equipment of the networking laboratory, suggestions for improvement of the current solution and its usage in fully working condition - access to a greater number of students in unlimited regime - can be obtained.

Gateway redundancy protocols

This paper covers how to increase the availability of data networks. Issue of high available services is very actual today. Redundancy is usually solved by the Spanning Tree Protocol on the 2nd layer of ISO/OSI model. This paper is dedicated to redundancy on 3rd layer of ISO/OSI model. The goal of paper is to explore possible solutions for the default gateway redundancy to increase availability of external networks. The survey is focused on FHRP (First Hop Redundancy Protocol) protocols, description of their functionality, network communication, and basic configuration. Next aim of the paper is comparison of these protocols and real time measurements of protocol performance. Outcome of the paper is functional description of HSRP, VRRP and GLBP protocols. Meaning of parameters in communication messages of HSRP and VRRP protocols is explained further. Paper contains basic configuration for every protocol with brief explanation of configuration commands. Measurements delay of choosing new active gateway has been performed on physical topology with physical devices. Latest version of FHRP was used during these measurements. The measured results indicate that performance of tested FHRP protocols is almost equivalent.