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Presented papers written in English and published in the Conference proceedings will be submitted for posting to IEEE Xplore.
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Invited Lecture
Chair: Tihana Galinac Grbac
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M. Ivanovic, V. Kurbalija (University of Novi Sad, Novi Sad, Serbia)
Time Series Analysis and Possible Applications 
Data presented in form of time series as its analysis and applications recently have become increasingly important in different areas and domains. In this paper brief overview of some recently important standard problems, activities and models necessary for time series analysis and applications are presented. Paper also discusses some specific practical applications.
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Wireless Communications and Technologies
Chair: Renato Filjar |
Z. Martinovic, M. Dadic, R. Malaric, Z. Martinovic (FER, Zagreb, Croatia)
Wireless Resonant Power Transfer – An Overview
Wireless power transfer (resonant), known as Witricity, represents the concept of energy transfer through resonant (magnetic) coupling based on Maxwells’s electromagnetic equations. The objective of this paper is to give an overview of the Witricity technology. Introduction will give description of technology, describe the system components and working model. Focus will be kept on electromagnetic phenomen inside the resonant circuit. Furthermore, paper will present comparison between standard (conducted) and wireless (resonant) Witricity technologies.
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L. Iliev, I. Stoyanov, T. Iliev, E. Ivanova, G. Mihaylov (University of Ruse, Ruse, Bulgaria)
Investigation of a Small Handheld PCB Nesting Two Antennas NFC 13.56 MHz and to RF 868 MHz
The development of the electronics during the last years aims to produce smaller devices with a very high integration, very energy efficient and cost-effective. Also there is a tendency that every device should have a communication modules, so that it can connect to the cloud network which is evolving every day. For these reasons, device also must include different kinds of wireless or wired protocols. If a wireless communications are used, then there should be an antenna or several antennas so that a single device must be able to nest several communication interfaces like RF (MHz to GHz range) or near field communication (NFC). Designing several different antennas into one single PCB, which is small in size, might be a problem and a challenge. Every electromagnetic antenna has its own requirements for structural design, placement on the PCB, physical surrounding components and objects, ground planes, environment dependency and many other factors
When the other requirement, which are minimum size of the whole device, minimum energy consumption, durability, cost-effectiveness are taken into account, the design process is getting very difficult.
The following article is about investigation of the antenna parameters of a small handheld device, a remote controller, which combines two wireless communication interfaces - RF 868 MHz and NFC 13.56 MHz. The device includes a keyboard, battery, TI's CC1200 chip for RF868 interface, TI's RF430CL330H chip for NFC, TI's MSP430FR5969 as a microcontroller, Atmel's ATECC508A for efficient cryptography algorithms for the transmitted data. The device also includes a PCB antenna for the 868 MHz and PCB antenna for NFC. The size of the PCB is 40mm x 55 mm and the overall size of the remote control is 45mm x 70mm.
The investigation includes tuning the antennas with spectrum analyzer and impedance analyzer. Also aspects of EMC are examined.
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N. Taspinar (Erciyes University, Kayseri, Turkey), M. Balki (Meliksah University, Kayseri, Turkey)
The Investigation of the Effect of the Carrier Frequency Offset (CFO) in SC-FDMA System
In this paper, the effect of the carrier frequency offset (CFO) on system performance was investigated by computer simulations in single carrier Frequency Division Multiple Access (SC-FDMA) system. By computer simulations, figures of signal-to-noise ratio (SNR) versus symbol error rate (SER) of the system with and without CFO are obtained. Besides, the figure of SNR versus SER is obtained for different CFO values. From these results, it is seen that when the value of CFO increases, the performance of the system decreases. Moreover, the figures of SNR versus SER is obtained for different FFT sizes and different modulation levels for the same CFO value. It is seen that when the size of FFT increases, the system yields better performance. When the level of modulation increases, the performance of the system decreases. In addition, the estimation of CFO is performed by computer simulations. In the simulations, the estimation algorithm based on cyclic prefix is used. The figures of mean square error (MSE) versus SNR related with estimation and different modulation levels are obtained. It is seen that MSE decreases when SNR increases. By using CFO values obtained with estimations, correction process is also performed to obtain performance values of the system.
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G. Mihaylov, T. Iliev, E. Ivanova, I. Stoyanov, L. Iliev (University of Ruse, Ruse, Bulgaria)
Performance Analysis of Low Density Parity Check Codes Implemented in Second Generations of Digital Video Broadcasting Standards
The newly developed second generations standards for digital video broadcasting (DVB-T2, DVB-S2) emerges as a significant upgrade over its first generation predecessor. The new DVB standards targets an increased system throughput by at least 30% over the previous ones. DVB-T2 uses the same error correction coding as used in DVB-S2 and DVB-C2: LDPC (Low Density Parity Check) coding combined with BCH (Bose-Chaudhuri-Hocquengham) coding, offering a very robust signal. Low-Density Parity-Check (LDPC) codes received a lot of attention by their superb error-correcting capability and have been adopted as main error correct coding scheme by second generation Digital Video Broadcasting standards. In this paper we analyze the structure of LDPC codes and the iterative algorithms that are used to decode them. An analysis and simulation of the LDPC codes has been conducted using various code rates. The simulation results show that LDPC codes are a powerful error correcting coding technique under SNR environments. It has achieved near Shannon capacity. However, there are many factors need to be considered in the LDPC code design.
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Data and Image Analysis
Chair: Dragan Jevtić |
I. Stankovic, I. Orovic, S. Stankovic, M. Dakovic (University of Montenegro, Podgorica, Montenegro)
Iterative Denoising of Sparse Images
The paper examines an application of the gradient-based algorithm to image denoising with noise values being in the range of the available (non-noisy) pixel values. The analyzed image is considered to be sparse in the 2D-DCT domain. The presented algorithm is a generalization of the previous results on denoising images when the noisy pixels can be detected and eliminated using the L-statistics. The algorithm is based on the recently developed technique used for denoising of one-dimensional signals. A significant advantage of the presented algorithm is that it does not use any a priori knowledge about the positions, values or distribution of the noisy pixels. It is assumed that the positions of noisy pixels cannot be determined using the methods like the L-statistics based ones. Hence, the proposed approach reconstructs the pixels values iteratively using the highest gradient as pixel selection criterion, thus performing blind denoising on a pixel-by-pixel basis. The examples with synthetic two-dimensional signal and a test image are presented. Quality of the image reconstruction is measured using the structural similarity index.
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M. Marić (S&T Crna Gora , Podgorica, Montenegro), I. Orović, S. Stanković (University of Montenegro, Faculty of Electrical Engineering, Podgorica, Montenegro)
Compressive Sensing Based Image Processing in TrapView Pest Monitoring System
Image compression can be achieved using the principles of lower sample rate methods, such as Compressive Sensing. Lowering the sample rate is especially suitable for natural images in applications where minor visually loss of fidelity is acceptable. The goal is to achieve a substantial reduction in bit rate and image size. Compressive Sensing can also be used for the recovering, in situations when there is missing information about the signal. In this paper we analyze the performance and quality of Compressive Sensing approach applied on images captured by the TrapView automated camera station for pest detection. Compressive Sensing is used to reconstruct images if only small number of samples is available at the decoder side. This leads to decreasing bit rate and transferred data volume through mobile network, from the station to the TrapView cloud centre. It is shown that CS can provide a good quality image reconstruction with significantly reduced number of samples. The theory is tested using real images, obtained by the TrapView camera.
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D. Šipuš (Ericsson Nikola Tesla, Zagreb, Croatia)
Big Data Analytics for Communication Service Providers
Today, processing huge amount of various data in various forms, incremented on daily basis is no longer challenge for big data systems. The challenge is to get insight from big data analytics so we can get business value out of it. Customer experience is the main driver of changes in a way telecommunication operators are providing services to their customers and perceiving themselves as organization. The main obstacle for delivering good customer experience for telecommunication operators is mainly not identifying individual customer problems on time. The results are longer customer service response periods, badly targeted promotions, campaigns, and services. As a result customer experience is decreasing. The latest discoveries in predictive big data analytics in telecommunication services enable predictions of customer experience in real time by correlating numerous parameters gathered from various network elements and getting better insight into customer’s activities and habits. Using holistic approach extended customer session record is created regardless of provided service, whether the customer was watching video, downloading data, or having internet correspondence. Today it is possible to recognize customer behavioral patterns and evaluate their satisfaction with provided services.
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V. Čačković, Ž. Popović (Ericsson Nikola Tesla, Zagreb, Croatia)
Role of Data Analytics in Utilities Transformation
The value of data is on the rise since the new technologies are collecting more data than ever before. Use of data is maturing, disconnecting itself from the IT sphere and blending with other technology areas like the Internet of Things (IoT). Consequently data analytics is gradually turning into an important part of many industries in helping with challenges faced by implementation of new technologies.
Similar to for example transport systems or smart city systems, data analytics is used also by utility companies today as support for mass rollout of smart metering systems as well as for increasing the network visibility and for simplifying network management.
This paper outlines how utility companies can benefit from processing existing and new data and data analytics methods.
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M. Štajcer, M. Štajcer, D. Oreščanin (Poslovna inteligencija d.o.o., Zagreb, Croatia)
Using MEAN Stack for Development of GUI in Real-Time Big Data Architecture
There are several key criteria for successful Software development branch and one of these is Architecture. According to IEEE Standard 1471-2000, Architecture is defined as „the fundamental organization of a system, embodied in its components, their relationships to each other and the environment, and the principles governing its design and evolution“. We describe in detail Architecture, Design and Development of Graphic User Interface for real-time fraud detection system in Telco industry based on M*EAN stack architecture. Our focus is on a Web application architecture, which includes data model component, technical infrastructure component, and components that interact or are associated in any way with the system (users, Third party components).
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Invited Presentations
Chair: Branko Mikac |
T. Vlašec, D. Leko (Transmitters and Comunications Company Ltd., Zagreb, Croatia)
PMR OiV NET - izazovi u izgradnji i eksploataciji te nove mogućnosti |
Z. Kezan (Transmitters and Comunications Company Ltd., Zagreb, Croatia), I. Duić (HRT-Croatian Radiotelevision, Zagreb, Croatia)
HRTi OTT tehnologija koja prilagođava televiziju korisniku |
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Network Technologies
Chair: Dragan Jevtić / Stjepan Golubić |
H. Dizdarević, S. Dizdarević (BH TELECOM d.d. SARAJEVO, Sarajevo, Bosnia and Herzegovina), M. Škrbić, N. Hadžiahmetović (Elektrotehnički fakultet Univerziteta u Sarajevu, Sarajevo, Bosnia and Herzegovina)
A Survey on Physical Layer Impairments Aware Routing and Wavelength Assignment Algorithms in Transparent Wavelength Routed Optical Networks
A wavelength-routed optical network consists of a number of crossconnect switches which are interconnected by optical fibers. Transparent optical networks allow signals to bypass extensive electronic signal processing at intermediate nodes. The quality of an optical signal degrades as it travels though several optical components along its lightpath. It is essential to incorporate imapact of the physical impairments in the routing and wavelength assignment (RWA) problem in transparent optical networks. This work compiles a comprehensive survey, from various research publications, of the proposed algorithms that address this issue. The physical layer impairments classification in optical networks are initially presented followed by physical layer impairments (PLI) RWA algorithms and algorithmic approaches for the PLI-RWA problem. At the end of the work are presented performance metrics for evaluating the performance of the proposed PLI-RWA algorithms. Further research topics are presented in this study.
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H. Dizdarevic, S. Dizdarevic (BH Telecom d.d. Sarajevo, Sarajevo, Bosnia and Herzegovina), M. Škrbić, N. Hadžiahmetović (Elektrotehnički fakultet Univerziteta u Sarajevu, Sarajevo, Bosnia and Herzegovina)
A Survey on Transition from GMPLS Control Plane for Optical Multilayer Networks to SDN Control Plane
Software-defined network (SDN)/OpenFlow research and development have attracted the attention of many researchers and companies. The key idea of an SDN is characterized by decoupling the control plane from the data plane. This paper surveys the state-of-the-art of SDN and latest developments in this active research area of SDN. This work also compiles a comprehensive survey of programmable networks from early ideas to recent developments. SDN architecture and the OpenFlow standard in particular are initially presented followed by current alternatives for implementation and SDN protocols and services. It is also discussed why OpenFlow/SDN can succeed where Generalized Multi-Protocol Label Switching (GMPLS) failed in terms of optimal strategy transition from GMPLS control plane for optical multilayer networks to SDN control plane. At the end of the work are presented SDN applications and further research topics with some suggested open research challenges.
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I. Nenadić, D. Kobal, D. Palata (Ericsson Nikola Tesla, Zagreb, Croatia)
About the Telco Cloud Management Architectures
In order to achieve the expected benefits provided by network function virtualization and software defined networks, the key role is placed on management and orchestration functionality with goal to automate services provider business processes. Network function virtualization and software defined networks establish new requirements upon network management systems which demand a change of existing management architectures and currently implemented management systems. The biggest challenge being to achieve unified multivendor monitoring and management for both virtualized and non-virtualized networks. To address these new requirements and enable further evolution and implementation of virtualized software networks, there is a clear need to define common framework and agree upon common information model between different currently available standards defined by many different standardization bodies. The paper contains the overview of currently available important standards in the area of telecom cloud management as well as their short analysis with focus on network and services assurance systems – alarm monitoring and management, performance management, inventory management and service quality management. These are compared with today existing management architectures and systems in order to identify challenges and define requirements that will further drive the solutions in respect to new standardized framework. There are also some improvement guidelines for further considerations of management architectures.
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P. Cota, J. Šabec (Ericsson Nikola Tesla, Zagreb, Croatia)
CPE Virtualization by Unifying NFV, SDN and Cloud Technologies
This paper will describe CPE virtualization solution for home and enterprise environments by unifying Network Function Virtualization (NFV), Software Defined Networking (SDN) and Cloud technologies in Internet providers’ networks and data centres. The goal of this solution approach is to reduce operational and capital costs, increase network and service flexibility for providers and to broaden service offering and experience for the end-users. This is achieved by leveraging state of the art technologies that provide automation, flexibility and simplify operations. Possible applications, implementation and potentials will be studied throughout this paper.
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M. Tosic, O. Ikovic, D. Boskovic (Foundation VizLore Labs, Novi Sad, Serbia)
Soft Sensors in Wireless Networking as Enablers for SDN Based Management of Content Delivery
In this paper we present an approach for establishing soft/virtual sensors across wireless network components (access points, connected devices and routers) and a cloud based software defined networking (SDN) controller. These soft sensors provide the contextual insight necessary for efficient management of available storage and networking resources, all the while ensuring necessary QoS levels in content delivery services (i.e. video delivery). The approach presented converts wireless network infrastructure into an edge computing platform which provides real time decision making based on results received from established soft sensors. This provides the level of reactivity necessary for fast changing conditions in IoT era wireless networks. The cloud based SDN controller oversees the content delivery system and performs strategic/proactive decision making and guides edge computing processes and decisions in line with defined policies. In this paper we show the impact of SDN based resource management, supported by soft sensors and edge computing across wireless networking infrastructure, on resource utilization efficiency and QoS in content delivery.
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P. Kathiravelu (INESC-ID Lisboa, Lisboa, Portugal), T. Galinac Grbac (University of Rijeka, Rijeka, Croatia), L. Veiga (INESC-ID Lisboa, Lisboa, Portugal)
A FIRM Approach for Software-Defined Service Composition
Service composition is an aggregate of services often leveraged to automate the enterprise business processes. While Service Oriented Architecture (SOA) has been a forefront of service composition, services can be realized as efficient distributed and parallel constructs such as MapReduce, which are not typically exploited in service composition. With the advent of Software-Defined Networking (SDN), global view and control of the entire network is made available to the networking controller, which can further be leveraged in application level. This paper presents FIRM, an approach for Software-Defined Service Composition by leveraging SDN and MapReduce. FIRM comprises Find, Invoke, Return, and Manage, as the core procedures in achieving a QoS-Aware Service Composition.
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T. Žitnik, M. Galin, G. Pauković, I. Dević, R. Čižmar, Z. Bosić (Ericsson Nikola Tesla d.d., Zagreb, Croatia)
Test Environment & Application as a Service
In the highly competing global information technology (IT) industry it is crucial to apply the latest scientific know-how and service lifecycle models straight to daily business. Test Environment and Application as a Service (TEAaaS) is an OpenStack based Cloud solution developed in Ericsson Nikola Tesla, a Croatian provider of modern information-communications products, solutions, software and services, to transform the way IT applications, tools and environments are delivered to users. Information Technology Infrastructure Library (ITIL) Service Lifecycle Model has been applied in all development phases.
The solution comprises applications and tools made available to users as a customized service portfolio through a Web Cloud Portal, ready to be deployed as an automated development and test environment model. Multiple controller nodes in a high availability cluster provide effective reliability on the OpenStack level, while the custom adapted FreeNX based Load Balancer improves the overall application capacity. The OpenStack Ceilometer component provides real-time monitoring of the used resources and their utilization, so TEAaaS delivers a transparent and flexible pay-per-use service model.
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N. Štokić (Hrvatski Telekom, Zagreb, Croatia)
Workaround Solutions Used During PSTN Migration of Customers to IMS Network
PSTN migration of customers in Croatian Telecom from legacy TDM network to the new IMS network brought many challenges. Not all of the new products on IMS platform were ready to be applied for customer migration, therefore alternative solutions as technical workarounds were needed. Main issue was how to switch customers, without many problems, on the new system with retention of the existing QoS until final solutions were available. We had to provide quick response on various challenges, because migration of customers to the new technology required different solutions . Paper describes the alternative solutions that have been applied to successfully resolve challenges in this large and complex project of PSTN migration.
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D. Hamidovic (BH Telecom, Tuzla, Bosnia and Herzegovina), N. Suljanović (Fakultet Elektrotehnike, Tuzla, Bosnia and Herzegovina)
Development of the Generic OFDM Based Transceiver in the LabView Software Environment
OFDM technique is the most adopted modulation technique offering many advantages such as high spectral efficiency, noise, inter-symbol interference and multipath robustness. These have made OFDM a first-choice technique in majority of today’s wireless and wired communication system. In this work, physical layer of the generic transceiver, based on OFDM, is implemented. Focus is kept on time and phase synchronization mechanisms as a key functionality of the receiver part. Complete implementation and simulation is conducted in the LabView software environment. BER results are obtained for different system parameters and presented in this paper. The transceiver implemented serves as a model for building enhanced, hardware device which could then be used for testing real, physical channels. Possibilities for the future work of using this device for testing real communications systems, are briefly described in this work. For this purpose, National Instruments 5640R platform, with FPGA core, is presented as optimal hardware solution. Final section of this paper highlights possibilities of using this hardware solution for conducting in-detail analysis, testing and improving of high-demand communication systems.
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Z. Kljaić (Ericsson Nikola Tesla d.d., Zagreb, Croatia), P. Škorput, dr.sc. (Faculty of Traffic and Transport Sciences, University of Zagreb, Zagreb, Croatia), N. Amin (Ericsson Nikola Tesla d.d., Zagreb, Croatia)
The Challenge of Cellular Cooperative ITS Services Based on 5G Communications Technology
Currently LTE networks have not yet been fully implemented in some parts of the EU, but the telecom industry is busily working on the next step, and that is the 5G broadband network. The digital transformation of the economy, industry and society as a whole sets new requirements for telecommunication infrastructure, particularly for wireless or cellular networks. Given the great potential of advanced 5G communications networks together with cloud computing and IoT solutions, intelligent solutions arise in the field of traffic and transportation, and automotive industries. This paper describes new opportunities and challenges in the rapidly growing field of ITS, in particular in the area of interoperability and automatic charging services.
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Invited Presentation
Chair: Branko Mikac |
N. Talian (King ICT, Zagreb, Croatia)
Cryptolockeri - je li moguće zaštititi se? |
Network Performances
Chair: Velimir Švedek |
A. Marincic, D. Simunic (Faculty of electrical engineering and computing, Zagreb, Croatia)
Performance Evaluation of Different Scheduling Algorithms in LTE Systems
Nowadays, LTE is a widely used mobile communication technology. The development of mobile communications has never been faster. Main goal of mobile communications is to increase the data throughput and to ensure the best possible quality of communication between users regardless of the environment in which they are situated and the type of data they share. In this paper performance evaluation of different scheduling algorithms used in LTE systems is given. Following scheduling algorithms are considered: Round Robin, Proportional Fair, Best CQI, Resource Fair and MaxMin. Also a FFR method, which represents a new way of resource allocation in LTE-A systems is evaluated in this paper. System performance was observed according to the following parameters: average throughput of user equipment, peak throughput of user equipment, edge throughput of user equipment, spectral efficiency of user equipment, average cell throughput and fairness in radio resources allocation. Vienna LTE-A System Level Simulator was used for conducting evaluation of LTE-A system.
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T. Assefa, K. Kralevska, Y. Jiang (Norwegian University of Science and Technology, Trondheim, Norway)
Performance Analysis of LTE Networks with Random Linear Network Coding
Random Linear Network Coding (RLNC) has emerged as a promising solution for reliable multimedia delivery over mobile cellular networks. In this paper, we deploy Application Layer-RLNC (AL-RLNC) on the top of the existing Hybrid Automatic Repeat Request (HARQ) in 4G Long Term Evolution (LTE) networks. A simple implementation scenario composed of a user equipment, an eNB and a remote host is considered. Our results show that AL-RLNC improves the throughput and the coverage at a cost of a higher packet delay. In addition, we compare the performance when AL-RLNC is used to the performance with the advanced LTE system antenna technique Multiple-Input Multiple-Output (MIMO).
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D. Klobučarević, Ž. Klobučarević (HT, Zagreb, Croatia), D. Belošić (Nokia, Zagreb, Croatia)
VoLTE E2E Performance Management
Introducing new Services on IMS platform, there is also need for their monitoring in purpose of Quality of Service(QoS) because there is an overall opinion that this is main key differentiator on telecommunication market. HT has a quite big experience in providing telecommunication services and along with this comes quality monitoring and these days focus is how to ensure QoS monitoring in new technology environment. Working in multivendor and multinational environment which is very demanding and challenging it is very important to have strong support from international recommendations dealing with Performance Management of new Services. In this paper, the methodology of introducing necessary Key Performance Indicators (KPIs) is described, as well as supporting and reporting systems for monitoring, collecting and benchmarking of KPIs. In addition, there are some results from previous international projects which were the base of future VoLTE E2E Performance Management.
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S. Singh, W. Bziuk, A. Jukan (Technische Universit¨at Carolo-Wilhelmina zu Braunschweig, Braunschweig, Germany)
Balancing Security and Blocking Performance with Reconfiguration of the Elastic Optical Spectrum
Reconfiguration of connections along frequency axis, – similar to frequency hopping in wireless systems, has been shown to improving security in elastic optical networks (EONs). However, the effect of spectrum reallocation on the connections’ blocking and the associated connections’ security is still underexplored. In this paper, we examine the effect of reconfiguration of connections on its security and blocking performance of an elastic optical link (EOL). We propose a Reconfiguration-as-a-Service (RaaS) method, which randomly reconfigures connections to improve its security, and for that scenario we model the connection patterns of an elastic optical link. We apply a multi-class
continuous-time Markov chain under the first-fit and random-fit spectrum allocation (SA) method. Analytical results show that the random reconfiguration scheme can improve security at the cost of only a slight increase in blocking, depending on the rate at which it is performed, the link load and the capacity of an EOL. We hence show that it is indeed possible to balance the security and blocking performance with RaaS.
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I. Fosić (HEP Telekomunikacije d.o.o., Osijek, Croatia), D. Budiša (HEP ODS d.o.o. Elektroslavonija Osijek, Osijek, Croatia)
Ensuring Continuous Operation of Critical Process of Remote Control System at the Level of Network Connectivity
Continuity of critical process is extremely important in the bussines of each company and depends on many different parameters, such as uninterruptible power supplies, application stability, continuous interconnection of devices that are in the system and so on. If a failure occurs in one parameter of the system, there is a downtime of critical process that will result in losses of various types. To make the system continuous and uninterrupted, all system parameters must be protected from unwanted downtime. In the remote control system most relevant parameters of the system are power supply and mutual communication. Uninterrupted power suply of device usually use a redundant power suply module and uninterruptible power supply system with some autonomy as UPS (Uninterruptible Power Supply) devices with batteries to provide power suply during the malfunction. Continuity of communication can be accomplished in several ways, using redundant cards, devices, communication paths, but they all are based on uninterrupted power supply. Therefore, during system design, more attention is paid to power suply rather then for communication. In complex systems where critical processes are depending on non-critical processes and components, improvement of non-critical parts of the system lead to the desired level of continuity to target critical systems. This paper will describe how to improve communication of network devices that are part of non-critical systems and have an impact on the operation of critical system. For that purpose paper will describe use of HSRP (Hot Standby Router Protocol) routing protocol feature to ensure smooth traffic routing of critical system on an IP network due to failure of the main network device.
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IoT Platform and Applications
Chair: Stjepan Golubić |
A. Koren, D. Šimunić (Faculty of Electrical Engineering and Computing, Zagreb, Croatia)
Requirements and Challenges in Wireless Network’s Performance Evaluation in Ambient Assisted Living Environments
Ambient Assisted Living environments rely heavily on use of technology for providing its users with assistance or supervision in their Activities of Daily Living (ADLs). Thus, it is crucial to ensure that wireless sensor networks (WSN) have high reliability and availability in such systems. Performance of networks is measured by the packet delivery ratio, average end-to-end delay and power consumption in order to ensure QoS, especially for time sensitive traffic. During the past thirty years of research, a colossal number of MAC protocols have been developed, differing by the type of media they use as well as the performance requirements for which they have been optimized. Design of MAC layer has a major role in energy efficiency of the wireless sensor network as energy efficient protocols improve the lifetime of the network. This paper explores different protocol implementations for WSN with the goal of achieving best possible QoS in context of Ambient Assisted Living environments.
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A. Kosovac (Faculty of Traffic and Communications, University of Sarajevo, Sarajevo, Bosnia and Herzegovina), A. Veispahić (UAS Technikum Wien, Wien, Austria), M. Berković (Faculty of Traffic and Communications, University of Sarajevo, Sarajevo, Bosnia and Herzegovina)
Long Term Evolution as a Precondition for Internet of Postal Things
Wireless technology is incessantly used, from handheld devices up to industrial environment that further leads to global interconnectivity. LTE enables real time communication with high reliability, robustness and higher security. HD voice transmission, Machine-to-Machine communications and Internet of Things are only some of domains provided by LTE network nowadays. Such technology delivers connectivity known as Internet of Everything, which will make the world more suitable place. LTE can also be key enabler for Internet of Postal (IoPT) which is attracting growing attention on a global world market and in IT world.
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D. Capeska Bogatinoska (University for Information Science and Technology “St. Paul the Apostle”, Ohrid, Macedonia), R. Malekian (University of Pretoria, Pretoria, South Africa), J. Trengoska , W. Asiama Nyako (University for Information Science and Technology “St. Paul the Apostle”, Ohrid, Macedonia)
Advanced Sensing and Internet of Things in Smart Cities
Internet of Things is largely perceived as a collection of interconnected “things” within smart cities. However, it can also be observed as a collection of data, shared between different devices and advanced sensors, then analyzed and used in different aspects of the smart city. In this paper, we introduce a similarity between a layered network architecture and “layered smart cities architecture” used for collection and sharing of big data with the aid of a cloud infrastructure in the smart city. The Internet of Things is discussed in the viewpoint of specific applications and technologies, i.e. layers in smart cities, such as: smart homes and automation, energy efficiency, e-health, intelligent transportation, waste and water management, smart agriculture, security and emergency services, application services and connected smartphones, etc.
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M. Weber (Hrvatska regulatorna agencija za mrežne djelatnosti, Zagreb, Croatia), M. Boban (Pravni fakultet Sveučilišta u Splitu, Split, Croatia)
Security Challenges of the Internet of Things
Internet of things (furthermore IoT) by definition refers to a networked interconnection of devices in everyday use that are often equipped with ubiquitous intelligence. It is based on processing of large quantities of data in order to provide useful information/service and enables an efficient regulatory policy in the area of IoT. One of the key challenges for the realization of the IoT includes security challenges, especially in the area of privacy and confidentiality among management of heterogeneities and limitations of network capacities. Those challenges will be based on information security management systems as well as on legal foundations. When considering the legal framework of security and privacy of the IoT, it has to be determined which model of regulation should be applied. Thereby, no traditional government regulation is actually appropriate for a global system such as IoT. The most important foundation consequently will be the regulatory foundations of European union (on the territory of EU) and, consequently building the model of self-regulaton based partly on state and mostly on law international agreements and directives which are to be considered as tools to govern the IoT.
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I. Lasorsa, M. Ajčević, P. D’Antrassi (University of Trieste, Trieste, Italy), G. Carlini (TBS Group, Trieste, Italy), A. Accardo, S. Marceglia (University of Trieste, Trieste, Italy)
Promoting Health for Chronic Conditions: a Novel Approach that Integrates Clinical and Personal Decision Support
Direct and indirect economic costs related to chronic diseases are increasing in Europe due to the aging of population. One of the most challenging goals is to improve the quality of life of patients affected by chronic conditions, and enhance their self-management.
In this paper, we present a novel architecture of a scalable solution, based on mobile tools, aimed to keep patients with chronic diseases away from acute episodes, to improve their quality of life and, consequently, to reduce their economic impact.
Our solution provides patients with a personalized tool for improving self-management, and it supports both patients and clinicians in decision-making through the implementation of two different Decision Support Systems.
Moreover, the proposed architecture takes into account the interoperability and, particularly, the compliance with data transfer protocols (e.g., BT4/LE, ANT+, ISO/IEEE 11073) to ensure integration with existing devices, and with the semantic web approaches and standards related to the content and structure of the information (e.g., HL7, ICD-10 and openEHR) to ensure correct sharing of information with hospital information systems, and classification of patient behaviours (Coelition).
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B. Risteska Stojkoska (FINKI, Skopje, Macedonia)
A Taxonomy of Localization Techniques Based on Multidimensional Scaling
Localization in Wireless Sensor Networks (WSNs) has been a challenging problem in the last decade. The most explored approaches for this purpose are based on multidimensional scaling (MDS) technique. The first algorithm that introduced MDS for nodes localization in sensor networks is well known as MDS-MAP. Since its appearance in 2003, many variations of MDS-MAP have been proposed in the literature. This paper aims to provide a comprehensive survey of the localization techniques that are based on MDS. We classify MDS-based algorithms according to different taxonomy features and different evaluation metrics.
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N. Miškić Pletenac, K. Lenac (Tehnički fakultet - Sveučilište u Rijeci, Rijeka, Croatia)
Distributed Real-time Lift Kinematic Monitoring Using COTS Smartphones
This paper presents a distributed system for real-time monitoring of lift movements and traffic analysis in a remote monitoring and predictive maintenance Internet of Things scenario. By harnessing processing and communication capabilities of today's smartphones and their integrated inertial sensors, the system allows for continuous tracking of the lift's position in the shaft without any interference with the lift operation nor interfacing to the existing lift controller. The paper describes the mathematical modelling on which the system is based, as well as the system's architecture and main components. It also presents and discusses the data gathered by the system in real lifts in multiple locations.
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V. Vyroubal (University of Applied Sciences Karlovac, Karlovac, Croatia), A. Stančić (University of Applied Sciences Karlovac , Karlovac, Croatia), I. Grgurević (University of Zagreb, Faculty of Transport and Traffic Sciences, Zagreb, Croatia)
Mobile Devices as Authentic and Trustworty Sources in Multi-Agent Systems
Current state of the art of mobile devices enables user to collect data measured data of various physical phenomena. Such devices can be viewed as participating agents in a multi-agent system (MAS). By utilizing public key infrastructure (PKI) these devices can be promoted to an authentic and trustworthy source of data which can be used for forensic purposes. Broader picture of circumstances of an event of interest can be achieved by concurrently collecting still images or video files, and sensor measurements from multiple users, who's mobile devices participate as agents in a MAS. Participation of a user is voluntary, conditioned on the close proximity of the user to the event of interest (“geo-fencing”). The collected data is processed by cryptographic and steganographic methods, for the purpose of guarantee that the collected data if authentic and trustworthy. By digitally signing, the collected data has legal power and can be used for forensic purposes and in legal proceedings.
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Software Engineering
Chair: Oliver Jukić |
D. Alic (Faculty of Electrical Engineering, Sarajevo, Bosnia and Herzegovina), S. Omanovic (Faculty of Electrical Engineering , Sarajevo, Bosnia and Herzegovina), V. Giedrimas (Siauliai University, Siauliai, Lithuania)
Comparative Analysis of Functional and Object-Oriented Programming
The choice of the first programming language and the corresponding programming paradigm is an important part of the software development process. Knowing the advantages and constraints of individual programming paradigms is important as it can be crucial for successful software implementation. In this paper we conduct an empirical comparison of functional and object-oriented programming languages using analog examples in C#, F#, Haskell and Java. Three algorithms were implemented: algorithm for solving N queens problem, algorithm for generating n-th left-truncatable prime and Merge sort algorithm in C#, F#, Haskell and Java programming languages. By measuring two basic parameters: number of lines of code and program execution speed and monitoring system resource usage an overview of programming languages efficiency is given. Programming language Java proved to be faster than the three remaining languages which performances were measured. Haskell was less memory intensive (up to two times less than Java) with similar execution times, while .NET languages were slower up to four times in comparison to Java). Object-oriented languages had significantly more lines of code in all three algorithms when compared to functional programming languages Haskell and F#.
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D. Ramljak (IBM Croatia Ltd., Zagreb, Croatia)
Improving the Composition and Assembly of APIs in Service Dominant Ecosystem Environments
Current research initiatives on API ecosystems mainly concentrate on the technical aspects of the API composition and assembly. API ecosystems usually have challenges such as publication and provisioning of APIs by providers and selection and consumption of relevant APIs by consumers. Difficulties and problems in API value oriented analysis and design are often overlooked. This paper introduces the new method and models for proper alignment of API value creation and value capture with business architecture, business processes and services.
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D. Glamočanin (Mtel a.d. , Banja Luka, Bosnia and Herzegovina)
Service Level Agreement - SLA, raspoloživost servisa i kvalitet sistema u telekomunikacijama
U ovom radu biće riječi o SLA Service-level agreement u vezi sa sistemom kvaliteta i pouzdanosti prilikom pružanja usluga i servisa u telekomunikacijama. Govoriće se o različitim nivoima primjene, različitim načinima mjerenja SLA, karakterističnim vrijednostima i specifičnim primjerima SLA u telekomunikacijama – Internet provajderi i informacione tehnologije. U vezi sa SLA biće riječi i o OLA Operational-level agreement.
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I. Golub, B. Radojević (CARNet, Zagreb, Croatia)
Challenges of a Service Transition in Multi Domain Environment
Service transition from a development to the full production operations is well defined in best practice documents with a set of steps that must be followed towards the success. It includes a lot of preparations and in advance planning, covering resources, policies, change management, definition of critical success factors and key performance indicators, challenges, risks and many other things. In multi domain environment, with multiple domains and multi national teams to participate in creation of the service, in parts of service transition such as service validation and testing as well as service operations, the best practice provides two-edge sword. It can at the same time help in understanding and agreeing in individual steps and present a stumbling-stone if followed blindly and literally. The paper presents challenges and guidelines for service transition in a multi domain environment.
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Z. Putnik, M. Ivanović, Z. Budimac (Faculty of Science, University of Novi Sad, Novi Sad, Serbia), K. Bothe (Institute of Informatics, Humboldt University Berlin, Berlin, Germany)
Teaching "Ten Commandments" of Software Engineering
Besides learning smaller, individual issues of computer science like certain programming languages, algorithms, techniques, or methods, students are obliged to study and accept some more general subjects, meet introductory versions of problems they will encounter in professional life, and be introduced to matters of larger importance. In this paper, we will present how some of these “commandments” are delivered to students at our institutions, within two courses – one on the final year of undergraduate studies, and one on master studies (also electable for undergraduate students). Out of the larger set of universal, general issues, we selected ten that seemed more important to us, teaching our students proper approaches via collaborative, teamwork-solved assignments. Finally, we will describe the way in which eLearning helped us teaching such general matters properly.
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Z. Stapić, M. Mijač, V. Strahonja (University of Zagreb, Faculty of Organization and Informatics, VARAŽDIN, Croatia)
Methodologies for Development of Mobile Applications
The paper presents the results of literature review performed in order to identify newly created methodologies targeting the development of mobile applications. As mobile development differs from development of other software systems we also discuss the challenges of such development and recon that methodological approach in development is necessary. However, there were no systematic studies identifying methodologies for mobile applications development. Systematic literature review we performed included more than 6700 initial studies, identified 49 (0.73%) potentially relevant studies, and after extracting data and applying quality check procedures 14 methodologies are identified. Only one of these methodologies is reported to be used in practice.
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A. Gabela (BH Telecom, Sarajevo, Bosnia and Herzegovina)
Upravljanje promjenama na primjeru telekom operatera u JI Evropi
Dominantni telekom operateri se suočavaju sa sve značajnijom konkurencijom od strane alternativnih pružaoca telekomunikacijskih usluga. Osim toga, regulatorne agencije, ali i brojni međunarodni sporazumi direktno utiču na snižavanje cijena telekomunikacijskih usluga, što rezultuje u padu prihoda. Razvojem tehnologije i popularizacijom alternativnih načina komunikacije i prenosa podataka, također se ugrožava nivo prihoda ostvaren od strane osnovnih telekomunikacijskih aktivnosti.
Tržište telekomunikacija se nalazi u zreloj fazi i zbog toga je jako teško nalaziti potpuno nove korisnike usluga. Umjesto toga, preostaju mogućnosti primamljivanja korisnika od strane konkurenata, te zadržavanje postojećih korisnika i povaćenje prihoda po korisniku (ARPU – Average revenue per user). Povećanje prihoda po korisniku podrazumijeva značajno unapređenje kvaliteta i obima usluga koje se mogu ponuditi.
Početkom 21. stoljeća većina telekom operatora je pružala osnovne telekomunkacione usluge, uz mogućnost kupovine telefona. Danas se telekom operateri okreću prema novim djelatnostima, koje ne predstavljaju osnovne telekomunikacione usluge. Za ulazak u nova područja poslovanja, neophodna je saradnja sa drugim poslovnim subjektima, prije svega iz finansijskog i tehnološkog domena poslovanja kao što su banke, osiguravajuće kuće, softverske kompanije, proizvođači uređaja...
Konkretno rad se fokusira na sljedeća područja poslovanja: m2m - Machine to Machine, NFC - Near Field Communications, učešće na tržištu energenata, prodaja uređaja i mobilno oglašavanje.
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A. Stojanović (Tehničko veleučilište u Zagrebu, Zagreb, Croatia), N. Lazić (Filozofski fakultet u Zagrebu, Zagreb, Croatia), Ž. Kovačević (Tehničko veleučilište u Zagrebu, Zagreb, Croatia)
Tehnologije integracije informacijskih sustava
Danas je uobičajeno za veće organizacije da imaju više informacijskih sustava od kojih svaki obuhvaća jedan segment podataka s kojima radi dotična organizacija. Također je uobičajeno da su ti sustavi razvijani tokom dužeg vremenskog perioda, pa je stoga i vrlo vjerojatno da su se poslovni uvjeti unutar kojih posluje dotična organizacija promijenili. To znači da se pojavila potreba za analizom novih vrsta podataka, a time i za novim informacijskim sustavom čijom je funkcionalnošću potrebno obuhvatiti te podatke. Zbog ovoga organizacije često moraju koristiti više zasebnih informacijskih sustava, što usporava, a time i poskupljuje funkcioniranje same organizacije. Kao rezultat, javlja se potreba za povezivanjem, odnosno integracijom takvih sustava. U ovom radu razmatraju se neke popularne tehnologije za integraciju informacijskih sustava. Nadalje, uspoređuju se razlike između dvije različite arhitekture ovakvih sustava – SOA, kao dobro utvrđene arhitekture, i mikroservisi, kao relativno nove arhitekture koja je posljednjih godina u usponu.
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Telecom Products, Services and Market
Chair: Tihana Galinac Grbac |
I. Vrbovčan, T. Pavić, M. Šoša Anić (T-Hrvatski Telekom, Zagreb, Croatia)
Restructuring of Telco Products
In the daily struggle to increase revenues in telecoms improving the sales process is one of the key areas in which changes are taking place. Through it telecoms want to achieve an increase in sales and longer customer retention. Products and their implementation in IT systems are one of the key elements in the sales process and sales process improvements will require redesign of current product definition.
In this paper will be given an overview of the current telecom product structures, the difficulties that telecoms are facing due to the product structure and suggestions for future improvements.
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N. Banovic-Curguz, D. Ilisevic (Telekomunikacije RS A.D. Banja Luka, Banja Luka, Bosnia and Herzegovina)
Moving from Network-Centric toward Customer-Centric CSPs in Bosnia and Herzegovina
Telecom sector is in the middle of a global transformation. Drivers for this are changes in customer behavior and in the telecom industry itself. Today CSPs need a more sophisticated, real-time view of performance that provides a deeper understanding of how customers are using and experiencing specific services. Moving from network-centric toward customer-centric operations and introduction of Customer Experience Management - CEM are important steps in that transformation process. In this paper we have provided short overview of current state in performance & customer management segment for CSPs in Bosnia and Herzegovina. Afterwards, we have presented the review of necessary steps in the transformation journey from network-centric to customer-centric solution with the Service Operation Center - SOC as enabler of CSP’s CEM strategy.
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D. Ilisevic, N. Banovic-Curguz (Mtel, Banja Luka, Bosnia and Herzegovina)
Future Communication Model: Challenges and Opportunities for Society as a Whole
Transforming into digital society requires the participation of а society as a whole. B&H is under pressure to accelerate social and economic development and its competitiveness. A key element to this process is broadband access. Broadband (BB) access is the key element to bridging the physical economy to the digital economy. Data center, cloud services, Big Data, Internet of Things (IoT) and Machine to Machine (M2M) are technologies that represents the targets in order the most efficiently transform economy for the digital future. Digital future comes with new challenges and first is to redraw the existing rules and bridge divides to create benefits of Information and Communications Technology (ICT) society. This article presents intelligent future and give roadmap to accelerate the adoption of digital services.
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O. Jukić, I. Heđi (Visoka škola Virovitica, Virovitica, Croatia)
Some Aspects of Network Management System for Video Service
Network operators providing integrated service that includes fixed telephony, Internet access and television are faced with need of management system integration. It is needed in order to achieve complete picture of current service quality as well as service quality trend. Namely, while own access network as well as and HFC (Hybrid Fiber Cable) network are built on some geographical areas, on other geographical areas operators are forced to use lines owned by other operators. On the other hand, customers use services transparently, without knowing anything about architectural or implementation details, perceiving service quality and availability only.
Hence, it is necessary to implement network management system that will integrate data from network parts controlled by other operators, in addition to own network monitoring, especially HFC part of the network. However, network parts controlled by other operators are visible as a “cloud”, but data from cloud borders should be integrated into network management system. Management data from different sources should be integrated into video service quality management system through mediation layer. This paper describes some aspects of implementation of such system, obtained as a result of authors’ work on real network management systems.
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I. Dražić Lutilsky (Ekonomski fakultet Sveučilišta u Zagrebu, Zagreb, Croatia), M. Ivić (Fakultet elektrotehnike i računarstva Sveučilišta u Zagrebu, Zagreb, Croatia)
Influence of OTT Service Providers on Croatian Telecomunication Market
The object of this paper is to express influence of OTT providers on Croatian telecommunication market in comparison with some European countries and United States based on mobileSQUARED research. As part of the project, "Looking to the future" the authors conducted a questionnaire about the impact of OTT service providers in the Croatian telecommunications market. The questionnaire has been sent to Croatian Telecom, VIPnet and Tele 2. The questionnaire was conducted in May and June 2015. All three operators have responded to the questionnaire. It has been concluded from the collected data that decrease in traditional traffic since 2008 is around 10% and for next 5 years they are estimating the same decrease in traffic. Decrease in revenues from traditional services since 2008 is up to 20% and for next 5 years they are estimating the same decrease in revenues. They are trying to generate revenues from charging data or from offering diversified service packages and they believe that LTE is offering new possibilities in generating revenues. They all believe that is profitable to invest in infrastructure and new technologies and in 2016 they will invest from 10 to 40% of profit.
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T. Žilić, V. Čošić (Hrvatski Telekom, Zagreb, Croatia)
Implementing Shared Service Center in Telecom Environment as More Efficient and More Cost Effective Business Model
Seeking for more efficient and more cost effective business model is constant issue for managers in IT industry, especially in companies like big telecom providers that are incumbents. This paper is dealing with one of those new business models, implementation of technology shared service center in one of the biggest telecom providers in Europe. To have such an approach, and even more to have it within several national companies, is a huge organizational change. Advancing telecom technology is additional motivation for moving to new business models. Therefore, implementation of shared service center in telecom, or any IT business, could be both organizational and technological challenge. Besides challenges faced while implementing technology shared service centers, this document is describing the main benefits of this model with special focus on telecom environment.
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S. Cakaj (Telecom of Kosovo &Prishtina University, Prishtina, Kosovo)
The Coverage Belt for Low Earth Orbiting Satellites
Low Earth Orbit (LEO) satellites are used for public networking and for scientific purposes. Communication via satellite begins when the satellite is positioned in its orbital position. Ground stations can communicate with LEO satellites only when the satellite is in their visibility region, since LEO satellites move too fast relative to a fixed point on the Earth. The satellite’s coverage area on the Earth depends on orbit altitude and elevation. The satellite coverage area is defined as a region of the Earth where the satellite is seen at a minimum predefined elevation angle. Under zero elevation it is the largest coverage area. Because of LEO satellites movement related to a fixed observer on Earth surface, also the coverage area changes its position continually creating a coverage belt. The wideness of coverage belt strongly depends on orbit altitude. To conclude about the coverage belt variation for low orbiting satellites, the simulation for attitudes from 600km to 1200km is presented through this paper.
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ICT Applications
Chair: Renato Filjar |
V. Žlof, S. Salapura (Mtel a.d., Banja Luka, Bosnia and Herzegovina)
Usluga mobilnog plaćanja računa m:Pay
U eri masovne upotrebe mobilnih komunikacija u poslovne svrhe mobilno plaćanje i mobilna trgovina postaju sve dominantniji načini obavljanja finansijskih transakcija. Moderni ljudi svoje poslove obavljaju ubrzano pri čemu u pomoć pozivaju moderne tehnologije. Korisnici mobilnog plaćanja imaju mogućnost izbora više platformi i informacionih sistema koji su prisutni na tržištu. Za velike kompanije su posebno atraktivni EBPP sistemi (electronic bill presentment and payment) jer uvode revoluciju u proces naplate računa nudeći online i u realnom vremenu uvid u sadržaj računa a potom izbor načina i vremena obavljanja transakcija. Potencijal EBPP iskazuje se kroz B2C (Business to Consumer) i B2B (business to business) procese koji mogu biti unificirani. Na ovaj način se značajno poboljšava briga i način upravljanja odnosa s korisnicima (CRM), te kreira dodatna vrijednost od strane izdavaoca računa.
U ovom radu biće predstavljena usluga mobilnog plaćanja m:pay koja krajnjim korisnicima kompanije Mtel omogućava plaćanje računa za telekomunikacione usluge te dopunjavanje prepaid računa. Biće opisan način rada servisa, arhitektura sistema, veze sa drugim sistemima/servisima te tehnologije razmjene podataka i izvještavanja.
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D. Salopek, T. Đigaš (Hrvatski telekom d.d., Zagreb, Croatia), F. Ambroš, M. Štimac (GEOPREM d.o.o., Osijek, Croatia)
Praćenje imovinsko pravnih poslova na elektroničkoj komunikacijskoj infrastrukturi putem Web GIS aplikacije
Složenost imovinsko pravnog uređenja elektroničke komunikacijske infrastrukture posljedica je neuređenih evidencija o nekretninama, nepostojanja podataka o položaju dijelova trasa elektroničke komunikacijske infrastrukture te o velikom broju titulara nekretnina u Hrvatskoj. Praćenje radnih procesa koji se odvijaju na području cijele države, s većim brojem izvođača radova te dislociranim korištenjem informacija ne može se efikasno organizirati bez odgovarajuće informatičke podrške. U Hrvatskoj postoji više vlasnika elektroničke komunikacijske infrastrukture i značajan broj infrastrukturnih operatora koji obavljaju telekomunikacijske djelatnosti na zakupljenoj infrastrukturi. Poslovni procesi zahtijevaju korištenje analognih i digitalnih baza podataka nastalih u raznim vremenskim periodima. Ovo pred informatičare postavlja specifične probleme - kako od nestandardnih podataka dati pouzdanu informaciju. Podaci potrebni za ustrojavanje aplikacije za praćenje radnih procesa u imovinsko pravnom uređenju infrastrukture sastoje se od temeljnih podataka katastra i zemljišne knjige, podataka katastra vodova i podataka sadržanih u prostornim planovima koji se odnose na namjenu korištenja zemljišta. Pravni režimi kojima podliježu nekretnine često su posljedica raznih zakonskih ograničenja a manje volje vlasnika. U javne evidencije o nekretninama se pravna ograničenja upisuju pojedinačno rezultat čega je velika ovisnost točnosti podataka o vremenu njihovog korištenja. Rješenje WEB GIS (geografski informacijski sustav dostupan putem mreže), otvorenog tipa, može pomoći u vođenju poslovnih procesa i u situacijama kada izvore podataka čine razne dislocirane baze podataka.
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B. Žeželj (INA d.d., Kostrena, Croatia), H. Hajdo (Emerson Process Management , Kostrena, Croatia)
Fieldbus Diagnostic Online Solution Program Establishment at Rijeka Oil Refinery
Rijeka refinery has built in year 2010. new hidrocracker complex unit as a part of refinery modernization project. This was time when complete new approach in term modern communication protocols was introduced in a field of instrumentation equipment communication. Protocol name is FOUNDATION Fieldbus which by very common definition represent an all-digital, serial, two-way communications system that serves as the base-level network in a plant or factory automation environment. It is an open architecture, developed and administered by the Fieldbus Foundation. Most beneficial cost advantage is reflected in the amount of cabling required which is much lower in Fieldbus than in 4-20 mA installations, several parameters can be communicated per device in a Fieldbus network and it provides a good foundation for the creation of a predictive and proactive maintenance strategy. First experiences show that plant-wiring concepts, shielding, training and the right tools are essential to gain the benefits of fieldbus technology. This paper describes online troubleshooting possibilities and diagnostic tools which can be used to address issues with devices before they become critical problems.
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G. Bakalar (International Maritime Technology Consultancy, Split, Croatia), M. Baggini (Bonum Mare Consultancy, Cocoa Beach, United States)
Automatic Communication System Ship to Shipping Terminal, for Reporting Potential Malfunctions of a Ballast Water Treatment System Operation
This research paper reviews ballast water treatment systems in two parts regarding data and methods: multi-criteria analysis and reliability study. The problem is how to timely recognize failure or operation stoppage of a ballast water treatment system. In the first part the multi-criteria analysis parameters and scenarios have considered the functional and operational problems of the systems. Aim of the study was to determine the most optional system from the maintenance point of view related to data transfer amount. The best score was 62% and it was the system that uses filtration, electrolysis and UV generator. Ballast water treatment systems could be in failure or under repair. That was confirmed and mathematically verified in the second part of the study. Reliability of the systems was calculated and total reliability value was 0.7 for each of the two computing systems individually, where one is redundant. New invented volumetric sensors should indirectly automatically report malfunctions through wireless and wire communications and that was suggested and ascertained in this paper.
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T. Škorjanc, R. Žigulić, N. Anđelić (Tehnički fakultet u Rijeci, Rijeka, Croatia)
AdriaHUB ICT platforma
AdriaHUB platforma je transnacionalna ICT platforma za zapošljavanje razvijena u sklopu projekta "Premostiti tehničke razlike i društvene prepreke u smjeru pretvaranja jadranskog područja u središte održivog tehnološkog razvoja", skraćenog naziva AdriaHUB. AdriaHUB platforma je razvijena za jadransko područje, Hrvatsku, Srbiju, Crnu Goru i Bosnu i Hercegovinu pod vodstvom partnera projekta iz Italije, s ciljem poboljšanja integracije između sveučilišta i industrije i pronalaženja rješenja za najprikladniji plasman visokokvalificirane radne snage na tržištu rada.
Doprinos rada sastoji se u opisu napora uloženih u klasifikaciju prikupljenih informacija iz zemalja sudionica projekta, definiranje zajedničkih standarda i referentnih vrijednosti, kao i u pokretanje zajedničke platforme za zapošljavanje diplomanata na jadranskom području.
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S. Salapura, V. Žlof (Mtel a.d., Banja Luka, Bosnia and Herzegovina)
Mjerenje kvaliteta usluge mobilnog plaćanja m:Pay
Kako je sve više kompanija prisutno on-line a sve više korisnika je mobilno, istraživanje odrednica i mjerenje kvaliteta mobilnih servisa postaju od ključnog značaja. Istraživanja u ovoj oblasti još uvijek su u začetku, postojeća istraživanja su sporadična i posmatraju uslugu doživljenu od strane krajnjih korisnika ili iz perspektive poslovnih korisnika, a rezultat su uglavnom ograničena saznanja.
Ovaj rad predstavlja pokušaj da se popuni ovaj nedostatak u stručnoj literaturi. Okosnica ovog rada je m-pay: novokreirani servis za mobilno plaćanje računa telekomunikacione kompanije Mtel a.d. Banja Luka, jedne od tri telekomunikacine kompanije u BH. Mtel je prva kompanija u regiji koja je svojim korisnicima ponudila ovaj savremen način plaćanja računa za telekomunikacione usluge.
U ovom radu biće odgovoeno na pitanje da li mogu korisnici ovog servisa ocjeniti kvalitet servisa putem trinaest ključnih atributa kvaliteta mobilnog servisa: dizajn mobilne aplikacije, jednostavnost korištenja, tehnička pouzdanost, korisnost, intuitivnost, prezentacija, tačnost, raspoloživost, pouzdanost servisa, fleksibilnost, sigurnost i vjerodstojnost, ranjivost i tajnost.
Biće primjenjen prilagođeni alat za ocjenu kvaliteta servisa mobilnog plaćanja(WebSQ skala) te prikazani rezultati mjerenja.
Pokazaćemo da li se WebSQ alat takođe može koristiti za dijagnostiku i tako pomogne davaocima usluga pri identifikaciji slabosti u njihovim servisima, omogućivši uvođenje korektivnih mjera.
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M. Hajnić (Ministarstvo financija, Carinska uprava, Zagreb, Croatia), D. Cmuk (KONČAR Electronics and Informatics Inc, Zagreb, Croatia)
Uspostava sustava upravljanja identitetima u Carinskoj upravi
Ovaj rad obrađuje uspostavu središnjeg sustava upravljanja digitalnim identitetima i ovlaštenjima (IdM) u informacijskom sustavu Carinske uprave, velike nacionalne organizacije s preko 3000 zaposlenika. Osnovna ideja rada je prikazati kako su u zatečenom sustavu administracije korisnika i njihovih ovlaštenja detektirani problemi i ograničenja, koje su aktivnosti poduzete na planiranju i dizajniranju novog sustava, koje tehnologije i alati su korišteni za izradu informatičkog rješenja s centraliziranom autentikacijom, referentnim imeničkim sustavom identiteta korisnika, aplikacija, poslovnih rola, radnih mjesta i organizacijskih jedinica, a sve u cilju uštede na troškovima administracije, povećanju učinkovitost i ubrzanju protoka roba i usluga. Rezultat rada je analiza i opis zatečenog stanja, financijski izračun učinaka administracije korisnika te razrada i unaprjeđenje ključnih procesa kao visoko razrađena podloga za tehničku provedbu projekta. Izgrađena je arhitektura novog sustava i opisan tijek provedbe i testiranja informatičkog rješenja središnjeg IdM sustava koji osigurava povrat investicije već u prvoj godini korištenja.
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Basic information:
Chairs:
Tihana Galinac Grbac (Croatia), Branko Mikac (Croatia), Stjepan Golubić (Croatia), Dragan Jevtić (Croatia), Renato Filjar (Croatia)
Steering Committee:
Slaviša Aleksić (Germany), Željka Car (Croatia), Saša Dešić (Croatia), Stjepan Golubić (Croatia), Renato Filjar (Croatia), Vlasta Hudek (Croatia), Darko Huljenić (Croatia), Robert Inkret (Croatia), Dragan Jevtić (Croatia), Admela Jukan (Germany), Zdravko Jukić (Croatia), Marko Lacković (Croatia), Erich Leitgeb (Austria), Dražen Lučić (Croatia), Branko Mikac (Croatia), Davor Šarić (Croatia), Dina Šimunić (Croatia), Velimir Švedek (Croatia), Antonio Teixeira (Portugal)
International Program Committee Chairman:
Petar Biljanović (Croatia)
International Program Committee:
Slavko Amon (Slovenia), Vesna Anđelić (Croatia), Michael E. Auer (Austria), Mirta Baranović (Croatia), Almir Badnjevic (Bosnia and Herzegovina), Bartosz Bebel (Poland), Ladjel Bellatreche (France), Eugen Brenner (Austria), Andrea Budin (Croatia), Željko Butković (Croatia), Željka Car (Croatia), Matjaž Colnarič (Slovenia), Alfredo Cuzzocrea (Italy), Marina Čičin-Šain (Croatia), Marko Delimar (Croatia), Todd Eavis (Canada), Maurizio Ferrari (Italy), Bekim Fetaji (Macedonia), Tihana Galinac Grbac (Croatia), Paolo Garza (Italy), Liljana Gavrilovska (Macedonia), Matteo Golfarelli (Italy), Stjepan Golubić (Croatia), Francesco Gregoretti (Italy), Stjepan Groš (Croatia), Niko Guid (Slovenia), Yike Guo (United Kingdom), Jaak Henno (Estonia), Ladislav Hluchy (Slovakia), Vlasta Hudek (Croatia), Željko Hutinski (Croatia), Mile Ivanda (Croatia), Hannu Jaakkola (Finland), Leonardo Jelenković (Croatia), Dragan Jevtić (Croatia), Robert Jones (Switzerland), Peter Kacsuk (Hungary), Aneta Karaivanova (Bulgaria), Mladen Mauher (Croatia), Igor Mekjavic (Slovenia), Branko Mikac (Croatia), Veljko Milutinović (Serbia), Vladimir Mrvoš (Croatia), Jadranko F. Novak (Croatia), Jesus Pardillo (Spain), Nikola Pavešić (Slovenia), Vladimir Peršić (Croatia), Tomislav Pokrajcic (Croatia), Slobodan Ribarić (Croatia), Janez Rozman (Slovenia), Karolj Skala (Croatia), Ivanka Sluganović (Croatia), Vlado Sruk (Croatia), Uroš Stanič (Slovenia), Ninoslav Stojadinović (Serbia), Jadranka Šunde (Australia), Aleksandar Szabo (Croatia), Laszlo Szirmay-Kalos (Hungary), Davor Šarić (Croatia), Dina Šimunić (Croatia), Zoran Šimunić (Croatia), Dejan Škvorc (Croatia), Antonio Teixeira (Portugal), Edvard Tijan (Croatia), A Min Tjoa (Austria), Roman Trobec (Slovenia), Sergio Uran (Croatia), Tibor Vámos (Hungary), Mladen Varga (Croatia), Marijana Vidas-Bubanja (Serbia), Boris Vrdoljak (Croatia), Damjan Zazula (Slovenia)
Registration / Fees:
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REGISTRATION / FEES
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Price in EUR
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Before May 16, 2016
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After May 16, 2016
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| Members of MIPRO and IEEE |
180
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200
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| Students (undergraduate and graduate), primary and secondary school teachers |
100
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110
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| Others |
200
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220
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Contact:
Tihana Galinac Grbac
University of Rijeka
Faculty of Engineering
Department of Computer Engineering
Vukovarska 58
HR-51000 Rijeka, Croatia
Phone: +385 51 651 596
GSM: +385 99 3820 750
E-mail: tihana.galinac@riteh.hr
 Opatija, with its 170 years long tourist tradition, is the leading seaside resort of the Eastern Adriatic and one of the most famous tourist destinations on the Mediterranean. With its aristocratic architecture and style Opatija has been attracting renowned artists, politicians, kings, scientists, sportsmen as well as business people, bankers, managers for more than 170 years.
The tourist offering of Opatija includes a vast number of hotels, excellent restaurants, entertainment venues, art festivals, superb modern and classical music concerts, beaches and swimming pools and is able to provide the perfect response to all demands.
Opatija, the Queen of the Adriatic, is also one of the most prominent congress cities on the Mediterranean, particularly important for its international ICT conventions MIPRO that have been held in Opatija since 1979 gathering more than a thousand participants from more than forty countries. These conventions promote Opatija as the most desirable technological, business, educational and scientific center in Southeast Europe and the European Union in general.
For more details please look at www.opatija.hr/ and www.opatija-tourism.hr/.
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