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Articles 8701 - 8730 of 13565

Full-Text Articles in Computer Engineering

New Integral Transform In Caputo Type Fractional Difference Operator, Artion Kashuri, Akli Fundo, Rozana Liko Nov 2015

New Integral Transform In Caputo Type Fractional Difference Operator, Artion Kashuri, Akli Fundo, Rozana Liko

UBT International Conference

In this paper, we introduce Caputo type nabla (q,h)-fractional difference operators and investigate their basic properties and also to show the applicability of this interesting (q,h)- new integral transform method and its efficiency in solving linear fractional difference equations. Differential equations with fractional derivative provide a natural framework for the discussion of various kinds of real problems modeled by the aid of fractional derivative. Discrete analogues of some topics of continuous fractional calculus have been developed. Finally, we provide the general solutions in terms of discrete Mittag-Leffler functions.

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Web Application For Students And Lecturer Of Electrical Engineering Faculty, Genci Sharko, Anni Dasho Sharko, Kadri Manaj Nov 2015

Web Application For Students And Lecturer Of Electrical Engineering Faculty, Genci Sharko, Anni Dasho Sharko, Kadri Manaj

UBT International Conference

Electrical Engineering Faculty, nowadays needs to develop by their students the “FIE Student MIS Application”. Development and usage of Web applications are popular due to the ubiquity of the browser as a client, commented mostly as a thin client. The ability to update and maintain web applications without distributing and installing software on potentially thousands of client computers is a key reason for their popularity. This paper presents the “FIE Student MIS Application” web platform designed for Electrical Engineering Faculty students and their lecturer to support on time correctly without delays and informing online all students and their lecturer receiving …

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Labeled-Image Captcha: Concept Of A Secured And Universally Useful Captcha, Mokter Hossain, Ken Nguyen, Muhammad Asadur Rahman Nov 2015

Labeled-Image Captcha: Concept Of A Secured And Universally Useful Captcha, Mokter Hossain, Ken Nguyen, Muhammad Asadur Rahman

UBT International Conference

Captcha (Completely Automated Public Turing test to tell Computers and Humans Apart) is a widely used online security tool that ensures that a computer program is not posing as a human user. While smart programs with advanced image processing capability have already cracked picture based captcha systems there is a need for making the test harder. This paper presents a design prototype of a simplified type of labeled-image captcha where a picture of a common animal or household item is marked with a number of different labels and the users will be asked to provide the correct label for specific …

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Hybrid Modelling In System Simulation, Andreas Körner Nov 2015

Hybrid Modelling In System Simulation, Andreas Körner

UBT International Conference

In times of increasing power and capacity in computer simulation mathematical models are getting more and more important. For different technical applications and in natural science but also in economic systems and management processes appropriate mathematical model descriptions are necessary. Hybrid modelling is a special technique for more complex model descriptions in order to reduce the degree of complexity. In different fields of interest the behavior of a model is dependent on the active state. When the model description is changing from one state to another a so-called state event takes place. State event modelling is the overall term to …

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Definition, Validation And Comparison Of Two Population Models For Austria, Martin Bicher, Barbara Glock, Florian Miksch, Niki Popper, Günter Schneckenreither Nov 2015

Definition, Validation And Comparison Of Two Population Models For Austria, Martin Bicher, Barbara Glock, Florian Miksch, Niki Popper, Günter Schneckenreither

UBT International Conference

In this work we present two structurally different mathematical models for the prognostic simulation of Austria’s population: A time-continuous, macroscopic system dynamics approach and a time-discrete, microscopic agent-based approach. Both models were developed as case studies of a series of population concepts in order to support models for decision-support in Austria’s health care system. In the present work we want to focus on the definition, the parametrisation as well as especially the validation process of both population-models. The latter was of special interest as it included a cross-model validation with Statistics Austria’s own prognostic model SIKURS.

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The Mobile Telecom Operator T-Mobile Macedonia Ad Skopje Abuses Its Dominant Position Harmful For The Mobile Telecom Operators One And Vip In The Telecom Market, Boris Arsov Nov 2015

The Mobile Telecom Operator T-Mobile Macedonia Ad Skopje Abuses Its Dominant Position Harmful For The Mobile Telecom Operators One And Vip In The Telecom Market, Boris Arsov

UBT International Conference

T-Mobile’s abusing of its dominant position is referring to the postpaid tariff models Relax and Relax Surf regarding the residential customers and the postpaid tariff models Business and Business Surf regarding its business customers. The prominent price offer to consumers is a case of predatory prices squeeze identified as a way of preventing or restricting competition in theory and practice. T-Mobile provides services at unreasonably low prices, prices below the level of expenditures necessary for their provision, as it is specific case with the postpaid tariff models Relax and Relax Surf regarding the residential customers and the postpaid tariff plans …

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The Analytic Hierarchic Process: A Model To Evaluate The Risk Of Getting Cancer, Daniela (Halidini) Qendraj, Markela Muca Nov 2015

The Analytic Hierarchic Process: A Model To Evaluate The Risk Of Getting Cancer, Daniela (Halidini) Qendraj, Markela Muca

UBT International Conference

The aim of this study is to classify the risk factors of being with a type of cancer by applying the AHP (analytic hierarchy process) scale. The Saaty’s analytic hierarchy process is applied for computing weights for the factors, is a modeling for classification. A case study of QSUT Tirana hospital data base is presented to rank four cancer types. By the data collect from the hospital during the years 2011-2015, the results show that lung cancer is mostly spread in humans, and the prostate cancer is lower spread in humans.

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Assessing Clustering In A Social University Network Course, Orgeta Gjermëni Nov 2015

Assessing Clustering In A Social University Network Course, Orgeta Gjermëni

UBT International Conference

A collection of data is gathered from surveys held in a Spring Course of the Economic Faculty in the University “Ismail Qemali” of Vlora, Albania. The data set for each student contains the names of the other students through which he/she have a “social relationship”. This relationship includes frequent communications, discussions on exercise solutions, and sitting usually close to each other in the class. We have constructed. At the end of the course, a final network based on this type of relationship. We are particularly interested on the clustering coefficient of this network and assessing it’s “significance”, in the sense …

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Exploring The Role Of Sentiments In Identification Of Active And Influential Bloggers, Mohammad Alghobiri, Umer Ishfaq, Hikmat Ullah Khan, Tahir Afzal Malik Nov 2015

Exploring The Role Of Sentiments In Identification Of Active And Influential Bloggers, Mohammad Alghobiri, Umer Ishfaq, Hikmat Ullah Khan, Tahir Afzal Malik

UBT International Conference

The social Web provides opportunities for the public to have social interactions and online discussions. A large number of online users using the social web sites create a high volume of data. This leads to the emergence of Big Data, which focuses on computational analysis of data to reveal patterns, and associations relating to human interactions. Such analyses have vast applications in various fields such as understanding human behaviors, studying culture influence, and promoting online marketing. The blogs are one of the social web channels that offer a way to discuss various topics. Finding the top bloggers has been a …

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Dual Tone Multi Frequency (Dtmf) Signal Generation And Detection Using Matlab Software, Nihat Pamuk, Ziynet Pamuk Nov 2015

Dual Tone Multi Frequency (Dtmf) Signal Generation And Detection Using Matlab Software, Nihat Pamuk, Ziynet Pamuk

UBT International Conference

In this study, Dual Tone Multi Frequency (DTMF) signal generation and detection is implemented by using Goertzel Algorithm in MATLAB software. The DTMF signals are generated by using Cool Edit Pro Version 2.0 program for DTMF tone detection. The DTMF signal generation and detection algorithm are based on International Telecommunication Union (ITU) recommendations. Frequency deviation, twist, energy and time duration tests are performed on the DTMF signals. The algorithm recognizes the DTMF tones if they satisfy the recommendations, otherwise they are rejected.

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Implementation Of The Aodv Routing In An Energy-Constrained Mesh Network, Altin Zejnullahu, Zhilbert Tafa Nov 2015

Implementation Of The Aodv Routing In An Energy-Constrained Mesh Network, Altin Zejnullahu, Zhilbert Tafa

UBT International Conference

Wireless sensor networks (WSNs) compose the fundamental platform for a number of Internet of Things (IoT) applications, especially those related to the environmental, health, and military surveillance. While being autonomous in power supply, the main challenge in node’s processing and communication architecture design remains the energy efficiency. However, this goal should not limit the main functionality of the system which is often related to the network coverage and connectivity. This paper shows the implementation of the Ad-hoc On-demand Distance Vector (AODV) routing algorithm in an XBee based platform. As shown, the network can achieve low power consumption per node primarily …

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E-Learning Systems In Higher Education Institutions: An Outlook Of Their Use In The Western Balkan Region, Blerta Abazi Chaushi, Agron Chaushi, Florije Ismaili Nov 2015

E-Learning Systems In Higher Education Institutions: An Outlook Of Their Use In The Western Balkan Region, Blerta Abazi Chaushi, Agron Chaushi, Florije Ismaili

UBT International Conference

This study provides a review of the literature on e-learning systems evolution and environments. The argument is that e-learning systems should be embedded in the core strategy of the institution. To support this premise, studies for e-learning are analyzed and six recommendations are drawn for universities to follow in order to have successful e-learning environments. The main contribution of this study, however, is the identification of the trends and statistics regarding the e-learning usage in the Balkan region. These stats are identified through a survey conducted in 40 universities in 10 countries from this region. The results show that more …

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Digital Long-Term Preservation In Albania, Determining The Right File Formats, Ardiana Topi, Aleksandër Xhuvani Nov 2015

Digital Long-Term Preservation In Albania, Determining The Right File Formats, Ardiana Topi, Aleksandër Xhuvani

UBT International Conference

The National Archive of Albania (NAA) is the main institution in Albania, according to legislation, responsible to create the rules for document life management produced by any organization, and preserve them. Almost all archival documents stored in archival institutions, must be saved for unlimited period of time, or forever. Preservation of digital documents is different from preservation of paper documents. It is a very complex procedure directly connected with the inevitable phenomenon of hardware and software obsolesces. A successful mission of the NAA must have a well-defined strategy regarding the Digital Long-term Preservation. This paper aims to present the possible …

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The Influence Of Cloud Computing And Mobile Technology In Our Activities, Ramadan Cikaqi, Ilir Morina Nov 2015

The Influence Of Cloud Computing And Mobile Technology In Our Activities, Ramadan Cikaqi, Ilir Morina

UBT International Conference

Through this paper we present the development of information technology especially in cloud computing and mobile technology as an integral part of everyday life, as well as the advantages that cloud computing and mobile technology offers to the business community and the private one. Furthermore, it presents the possibilities offered by this technology on the data preservation compared with the traditional ones. Due to the increased demand for big space, it was necessary to establish a centralized data storage which has brought with it more innovation and advantage, in comparison with other media for data storage in personal memories. This …

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Implementation Of E-Education In Africa Via Space Networks, Dimov Stojce Ilcev Nov 2015

Implementation Of E-Education In Africa Via Space Networks, Dimov Stojce Ilcev

UBT International Conference

In this paper is introduced an advanced E-education provision in remote dispersed communities, such as rural, remote, mobile, agriculture, mining, construction, surveying, military, tourism and so on, based on the specific needs and requirements, implies significant broadband connectivity requirements, timely and quality-assured content delivery of service, applications and interactivity. The E-education solutions of distance learning and training for remote and rural areas, which are out of range of terrestrial and short distance wireless telecommunications facilities, cannot provide the broadband access without space-enabled communication infrastructures, such as satellite constellations and Stratospheric Platform Systems (SPS) or High Altitude Platforms (HAP). The paper …

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The Importance Of Big Data Analytics, Eljona Proko Nov 2015

The Importance Of Big Data Analytics, Eljona Proko

UBT International Conference

Identified as the tendency of IT, Big Data gained global attention. Advances in data analytics are changing the way businesses compete, enabling them to make faster and better decisions based on real-time analysis. Big Data introduces a new set of challenges. Three characteristics define Big Data: volume, variety, and velocity. Big Data requires tools and methods that can be applied to analyze and extract patterns from large-scale data. Companies generate enormous volumes of polystructured data from Web, social network posts, sensors, mobile devices, emails, and many other sources. Companies need a cost-effective, massively scalable solution for capturing, storing, and analyzing …

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Perfect Metamaterial Absorber Based Energy Harvesting Application In Ism Band, Furkan Dincer, Mehmet Bakir, Muharrem Karaaslan, Kemal Delihacioglu, Cumali Sabah Nov 2015

Perfect Metamaterial Absorber Based Energy Harvesting Application In Ism Band, Furkan Dincer, Mehmet Bakir, Muharrem Karaaslan, Kemal Delihacioglu, Cumali Sabah

UBT International Conference

An electromagnetic (EM) energy harvesting application based on metamaterial absorber (MA) is introduced and discussed in this paper. This application is operating at ISM band (2.40 GHz) which is especially chosen due to its wide usage area. Square ring resonator (SRR) which has two gaps and resistors across the gaps on it is used. Chips resistors are used to deliver power to any active component. Transmission and reflection characteristics of metamaterial absorber (MA) for energy harvesting application are investigated. 83.6% efficient for energy harvesting application is realized in this study.

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A Policeless Traffic Ticketing System With Autonomous Vehicles, Mükremin Özkul, Ilir Çapuni Nov 2015

A Policeless Traffic Ticketing System With Autonomous Vehicles, Mükremin Özkul, Ilir Çapuni

UBT International Conference

Besides being expensive, traffic violation monitoring systems rely heavily on a huge infrastructure that incurs installation, operational, and maintenance costs. Developing countries — where people do exhibit less traffic safety aware- ness — deployment of such systems becomes a daunting task. A police- men cannot be everywhere, and a policeman can also be bribed. With the above goals in mind, in this paper we present an infrastructure- less and police-less traffic violation detection system that relies solely on the broadcast messages between the vehicles and secure communication of the vehicles with the transportation authority. Each vehicle should be equipped with …

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10 W Dc-Dc Converter Based Led Driver Circuit Design, Ö. Faruk Farsakoğlu, H. Yusuf Hasrici, Ibrahim Çelik Nov 2015

10 W Dc-Dc Converter Based Led Driver Circuit Design, Ö. Faruk Farsakoğlu, H. Yusuf Hasrici, Ibrahim Çelik

UBT International Conference

Considering the total amount of energy consumed in the world, energy used in lighting is of utmost importance. For this reason, systems used in lighting should be energy efficient, and mıre efficient lighting elements should be preferred. LED, as a solid-state lighting system, is more energy efficient than the lighting systems with conventional lighting elements. Some of the LEDs used in solid-state lighting systems are named as standard 5mm LEDs and power LEDs. Because power LEDs have more light efficiency than standard 5 mm LEDs, they are produced as an alternative to conventional light sources. Power LEDs draw much more …

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Bounty Techniques For Web Vulnerability Scanning, Tanzer Abazi, Mentor Hoxhaj, Edmond Hajrizi, Gazmend Krasniqi Nov 2015

Bounty Techniques For Web Vulnerability Scanning, Tanzer Abazi, Mentor Hoxhaj, Edmond Hajrizi, Gazmend Krasniqi

UBT International Conference

With the advancement of technology and the raising of massive amount of data, the used techniques for data security are continually a challenge. This paper contributes on identifying the gaps and evaluating security level on web portals hosted or managed by Republic of Kosovo institutions or businesses, whose data privacy and security could be a big business concern. The results have been obtained from real case scenario, where 25 security researchers have contributed in white hack activities. These activities, were part of a one day conference called. “The DAY when hacking is legal”, held in Pristine.

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Security Concerns Of New Alternative Telecommunication Services, Arbnora Hyseni, Krenare Pireva, Miranda Kajtazi Nov 2015

Security Concerns Of New Alternative Telecommunication Services, Arbnora Hyseni, Krenare Pireva, Miranda Kajtazi

UBT International Conference

With the advancing new era of communication, the so-called era of ‘being always online’ many providers offer their services for free. In that sense a small company or a virtual company becomes a huge competitor for different traditional telecommunication providers. Using the same services such as: voice calls, video calls, chat and similar services, the internet technology has made huge changes how users make use of such services . Instead of using these services, users shall install applications that are specialized for offering these services via applications, such as: Viber, WhatsApp, Facebook, Google Talk etc.. During the installation and update …

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Internet Of Things: From Applications, Challenges And Standardization To Industry Implementations, Xhafer Krasniqi Nov 2015

Internet Of Things: From Applications, Challenges And Standardization To Industry Implementations, Xhafer Krasniqi

UBT International Conference

The Internet of Things that is defined as anything that can be accessible anytime and anywhere provides connectivity to different objects and sensors around us and which will enable the transfer of different data between these objects and devices. A thing in the Internet of Things can be any natural or man-made object that can be assigned an IP address with a capability to exchange date over a network. There is a huge number of applications of IoT to benefit users, such as health monitors, smart homes, connected cars etc. If everything around us is connected and information about these …

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From Traditional Markets To E-Commerce And Finally To Social Media Commerce, Ardian Hyseni Nov 2015

From Traditional Markets To E-Commerce And Finally To Social Media Commerce, Ardian Hyseni

UBT International Conference

These days, getting new customers is much easier than in the past. People and customers are online sharing and exchanging ideas on products and it has become easier to find products over the internet and lately; with social media, where people can look for information from reviews and comments on sites. This way has changed shopping to a social experience and is the key element to the growth of social commerce. Businesses want to connect with people and customers which they do business, also they want customers opinions and reviews. By using social media, companies can now easily create an …

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Randomizing Ensemble-Based Approaches For Outlier, Lediona Nishani, Marenglen Biba Nov 2015

Randomizing Ensemble-Based Approaches For Outlier, Lediona Nishani, Marenglen Biba

UBT International Conference

The data size is increasing dramatically every day, therefore, it has emerged the need of detecting abnormal behaviors, which can harm seriously our systems. Outlier detection refers to the process of identifying outlying activities, which diverge from the remaining group of data. This process, an integral part of data mining field, has experienced recently a substantial interest from the data mining community. An outlying activity or an outlier refers to a data point, which significantly deviates and appears to be inconsistent compared to other data members. Ensemble-based outlier detection is a line of research employed in order to reduce the …

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Case Studies For A Markov Chain Approach To Analyze Agent-Based Models, Florian Kitzler, Martin Bicher Nov 2015

Case Studies For A Markov Chain Approach To Analyze Agent-Based Models, Florian Kitzler, Martin Bicher

UBT International Conference

Agent-Based Models have become a widely used tool in social sciences, health care management and other disciplines to describe complex systems from a bottom-up perspective. Some reasons for that are the easy understanding of Agent-Based Models, the high flexibility and the possibility to describe heterogeneous structures. Nevertheless problems occur when it comes to analyzing Agent-Based Models. This paper shows how to describe Agent-Based Models in a macroscopic way as Markov Chains, using the random map representation. The focus is on the implementation of this method for chosen examples of a Random Walk and Opinion Dynamic Models. It is also shown …

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Shopminer: Mining Customer Shopping Behavior In Physical Clothing Stores With Passive Rfids, Longfei Shangguan, Zimu Zhou, Xiaolong Zheng, Lei Yang, Yunhao Liu, Jinsong Han Nov 2015

Shopminer: Mining Customer Shopping Behavior In Physical Clothing Stores With Passive Rfids, Longfei Shangguan, Zimu Zhou, Xiaolong Zheng, Lei Yang, Yunhao Liu, Jinsong Han

Research Collection School Of Computing and Information Systems

Shopping behavior data are of great importance to understand the effectiveness of marketing and merchandising efforts. Online clothing stores are capable capturing customer shopping behavior by analyzing the click stream and customer shopping carts. Retailers with physical clothing stores, however, still lack effective methods to identify comprehensive shopping behaviors. In this paper, we show that backscatter signals of passive RFID tags can be exploited to detect and record how customers browse stores, which items of clothes they pay attention to, and which items of clothes they usually match with. The intuition is that the phase readings of tags attached on …

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Energy-Efficient Computational Chemistry: Comparison Of X86 And Arm Systems, Kristopher Keipert, Gaurav Mitra, Vaibhav Sunriyal, Sarom S. Leang, Masha Sosonkina, Alistair P. Rendell, Mark S. Gordon Nov 2015

Energy-Efficient Computational Chemistry: Comparison Of X86 And Arm Systems, Kristopher Keipert, Gaurav Mitra, Vaibhav Sunriyal, Sarom S. Leang, Masha Sosonkina, Alistair P. Rendell, Mark S. Gordon

Computational Modeling & Simulation Engineering Faculty Publications

The computational efficiency and energy-to-solution of several applications using the GAMESS quantum chemistry suite of codes is evaluated for 32-bit and 64-bit ARM-based computers, and compared to an x86 machine. The x86 system completes all benchmark computations more quickly than either ARM system and is the best choice to minimize time to solution. The ARM64 and ARM32 computational performances are similar to each other for Hartree-Fock and density functional theory energy calculations. However, for memory-intensive second-order perturbation theory energy and gradient computations the lower ARM32 read/write memory bandwidth results in computation times as much as 86% longer than on the …

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Deep Multimodal Learning For Affective Analysis And Retrieval, Lei Pang, Shiai Zhu, Chong-Wah Ngo Nov 2015

Deep Multimodal Learning For Affective Analysis And Retrieval, Lei Pang, Shiai Zhu, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

Social media has been a convenient platform for voicing opinions through posting messages, ranging from tweeting a short text to uploading a media file, or any combination of messages. Understanding the perceived emotions inherently underlying these user-generated contents (UGC) could bring light to emerging applications such as advertising and media analytics. Existing research efforts on affective computation are mostly dedicated to single media, either text captions or visual content. Few attempts for combined analysis of multiple media are made, despite that emotion can be viewed as an expression of multimodal experience. In this paper, we explore the learning of highly …

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Direct Or Indirect Match? Selecting Right Concepts For Zero-Example Case, Yi-Jie Lu, Maaike De Boer, Hao Zhang, Klamer Schutte, Wessel Kraaij, Chong-Wah Ngo Nov 2015

Direct Or Indirect Match? Selecting Right Concepts For Zero-Example Case, Yi-Jie Lu, Maaike De Boer, Hao Zhang, Klamer Schutte, Wessel Kraaij, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

No abstract provided.

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Vireo-Tno @ Trecvid 2015: Multimedia Event Detection, Hao Zhang, Yi-Jie Lu, Maaike De Boer, Frank Ter Haar, Zhaofan Qiu, Klamer Schutte, Wessel Kraaij, Chong-Wah Ngo Nov 2015

Vireo-Tno @ Trecvid 2015: Multimedia Event Detection, Hao Zhang, Yi-Jie Lu, Maaike De Boer, Frank Ter Haar, Zhaofan Qiu, Klamer Schutte, Wessel Kraaij, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

This paper presents an overview and comparative analysis of our systems designed for the TRECVID 2015 [1] multimedia event detection (MED) task. We submitted 17 runs, of which 5 each for the zeroexample, 10-example and 100-example subtasks for the Pre-Specified (PS) event detection and 2 runs for the 10-example subtask for the Ad-Hoc (AH) event detection. We did not participate in the Interactive Run. This year we focus on three different parts of the MED task: 1) extending the size of our concept bank and combining it with improved dense trajectories; 2) exploring strategies for semantic query generation (SQG); and …

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