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2015

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Articles 811 - 840 of 7524

Full-Text Articles in Engineering

Microsimulation Models For Simulating Pathways Of Patients With Mental Diseases, Andreas Bauer, Felix Breitenecker, Christoph Urach Nov 2015

Microsimulation Models For Simulating Pathways Of Patients With Mental Diseases, Andreas Bauer, Felix Breitenecker, Christoph Urach

UBT International Conference

Predicting demand for care is necessary to provide sufficient capacities in hospitals and enable better planning to cope with challenges like changes in the structure of the population. Emphasis in this work is put on the analysis of the data and on the parametrization of a simulation model for the paths of patients with mental diseases through the health care system. Survival analysis and model selection methods are used for this purpose. Data on patients and their treatments is analyzed with methods of survival analysis. Different methods for modelling the survival and hazard function are presented and compared. Hereby, the …

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Database For Online Accreditation Process In Directorate For Accreditation Of Kosovo (Dak-Mis), Ibush Luzha Nov 2015

Database For Online Accreditation Process In Directorate For Accreditation Of Kosovo (Dak-Mis), Ibush Luzha

UBT International Conference

Directorate for Accreditation of Kosovo (DAK) is only National Accreditation Body in Republic of Kosovo, recognized by Government, which in accordance with international standards, assesses technical competences of the Conformity Assessment Bodies (CAB)s that deal with activities such as: testing, calibration, certification and inspection both in public and private sector. Till now application for accreditation and all other procedures for accreditation of CABs are carried out so that all the documents of the application and the receipt of the certificate of accreditation are conducted in the offices of DAK. By Management Information System (MIS), database of DAK (DAK-MIS), customers will …

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Introduction To Stratospheric Communication Platforms (Scp), Dimov Stojce Ilcev Nov 2015

Introduction To Stratospheric Communication Platforms (Scp), Dimov Stojce Ilcev

UBT International Conference

In this paper are introduced the modern airship techniques and technologies as cost effective solutions of Stratospheric Communication Platforms (SCP). The launch or putting in position the airship is not critical point such as launch of satellite and controlling support services in the creation of space-based communication technology and the most expensive phase of the total system cost. Therefore, with few cost effective remote controlled and solar powered airships can be covered some region or country including urban, suburban and rural areas, mobile, farms and other environments with low density of population. The airship SCP network offers better solutions than …

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Noise Reduction In Quadcopter Accelerometer And Gyroscope Measurements Based On Kalman Filter, Bertan Karahoda, Xhemajl Mehmeti, Uran Cabra Nov 2015

Noise Reduction In Quadcopter Accelerometer And Gyroscope Measurements Based On Kalman Filter, Bertan Karahoda, Xhemajl Mehmeti, Uran Cabra

UBT International Conference

The Accelerometer and Gyroscope modules used for measuring the orientation of the quadcopter usually generate noisy signals which directly affect the control strategies. The high speed motors used in quadcopters cause high noise levels which makes the real time control almost impossible. In this work the Kalman filter is applied to the noisy measurements obtained from accelerometer and gyroscope modules. The measurements are conducted for two cases: Motors stopped, and Motors activated at high speed. The Kalman filtering is applied separately for each measurement and the obtained results show noticeable improvement in noise level for two cases. The joint implementation …

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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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“New” Subjects In Mechatronics Management Education, Peter Kopacek Nov 2015

“New” Subjects In Mechatronics Management Education, Peter Kopacek

UBT International Conference

Process – and manufacturing automation as well as robotics are currently one of the fast growing fields in automation. Advanced process control, cyber-physical systems, industry 4.0 and “advanced robots” are no longer a headline. They are in realization. As a consequence of these developments new social, ethical and human questions appear. Therefore this contribution is a first report about the continuous “modernization” of the Mechatronics Management BSc and MSc programs which are successful running at UBT. Both programs were developed in the framework of two TEMPUS projects from an international consortium from 2006 to 2009. Since that time new “buzzwords” …

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The Impact Of Air Pollution On Public Lighting Solar Panels In Shtimje, Vehbi Sofiu Nov 2015

The Impact Of Air Pollution On Public Lighting Solar Panels In Shtimje, Vehbi Sofiu

UBT International Conference

Requirements for exploitation of renewable energy have occupied a special place in the world of developed technology; they carry in themselves the hope of a viable advanced possibility towards sustainable development. Kosovo has a favorable geographical position and favorable climate conditions for utilization of solar energy. Solar energy is a promising energy source of the future and it’s use represents potential, since it is an inexhaustible natural source of energy, is the largest natural reserves of energy that is distributed throughout the world in quantities greater than our energy needs; is clean and it’s use requires no additional cost, as …

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Structural Analysis Of A Typical Highway Bridge Comparison Between Ktp, En And Aashto Load Models, Endrit Berisha Nov 2015

Structural Analysis Of A Typical Highway Bridge Comparison Between Ktp, En And Aashto Load Models, Endrit Berisha

UBT International Conference

This study consists on a structural analysis comparison of a typical highway bridge between KTP, EN and AASHTO based on load capacity. The Eurocodes are currently in the process of national implementation towards becoming the Europe wide means for structural design of civil engineering works. A team from Mott Macdonald inspected 562 bridges and the main causes of the defects are figured out in the study as traffic load, nature force, and aging, lack of maintenance and design deficiencies. As design codes are advancing with time, the need of Albania to upgrade its code has become a must. This paper …

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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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Planning, Development And Application Of Mechatronics Systems As Students Work, Muzafer Shala, Valmir Hoxha Nov 2015

Planning, Development And Application Of Mechatronics Systems As Students Work, Muzafer Shala, Valmir Hoxha

UBT International Conference

In Kosovo universities in general there is a lack of students practical work, this fact is one of the reasons why in Kosovo are no sufficient number of professionals to fill the market needs. The aim of this work is to go through the steps of conceptualisation, development and application of a Mechatronics Systems with students. Also in this project students work on all the phases of the work which we consider to be of great benefit. The work was organised as it would be on a real life company, students were split on groups and the groups worked in …

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Prepaid Meter Management System Challenge For Albanian Power Distribution Operator-Oshee, Genci Sharko, Anni Dasho Sharko Nov 2015

Prepaid Meter Management System Challenge For Albanian Power Distribution Operator-Oshee, Genci Sharko, Anni Dasho Sharko

UBT International Conference

Based on the currents situation for OSHEE it is necessity to design and implement a new reform for power sector covering in order to reduce distribution losses and improve collection, improve the power market model in line with EU directives and diversify generation source. Implementing of smart systems has been analyzed and implemented partially since former CEZ Albania Company, and for the state owned Company now OSHEE this new technology is highly efficient and can realize the ideas for the development of Smart Systems further. The implementation of SMART Systems will impact the OSHEE Distribution System through the upgrade of …

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Energy Production In Kosova And Regional Perspectives, Ardian B. Gojani Nov 2015

Energy Production In Kosova And Regional Perspectives, Ardian B. Gojani

UBT International Conference

This paper presents and analyses the current state of the energy sector in Kosova. It assesses the potential for development, and investigates the needs of the sector. Kosova’s energy sector is in a dire state presenting an obstacle for economic development of the country. The sector is not compliant with international standards and codes and has negative consequences for both system operators and consumers. In addition, this paper presents a general overview of energy production and use in the region, and discusses the possibility for coalescence. In conclusion, the report presents a few possible scenarios for the development of the …

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Solar Panels And Their Implementation In The Ubt Campus, Gentian Hyseni Nov 2015

Solar Panels And Their Implementation In The Ubt Campus, Gentian Hyseni

UBT International Conference

Every day more and more demand for electricity in our country are growing, to meet these requirements, avoiding the generation of electricity from coal, as the production of electricity from coal, damages the environment and our health, we must invest in production of electricity from renewable energy from wind, sunlight etc. At pre-sent, energy from non-renewable resources such as fossil fuels or fissionable materials accounts for over 92% of the world energy usage. In addition, energy generation based on burning of fossil fuels has caused an increase in carbon dioxide (CO) and other gas emissions, leading to global warming. A …

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Impact Of Shunt Compensation In Improving Voltage Level Of Overhead Transmission Lines, Marjola Puka, Nako Hobdari, Leonard Gjini, Marjela Qemali Nov 2015

Impact Of Shunt Compensation In Improving Voltage Level Of Overhead Transmission Lines, Marjola Puka, Nako Hobdari, Leonard Gjini, Marjela Qemali

UBT International Conference

Shunt compensation is widely used in alternative current transmission and distribution networks to produce reactive power support. Located in critical points such as vicinity of load centers, the use of Shunt compensation has beneficial effect on power system performance. The focus of this paper is a case-study in Albanian Power System: the implementation of Shunt Compensation in transmission network. For the most critical part of the network, there are performed simulations in two situations: without reactive compensation and with shunt compensations. The simulations data results to be in compliance with measurements data of the voltage for overhead transmission lines at …

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Understanding Residential Electricity Consumption Considering Energy Efficiency Policies And The Impact On The Electricity System, Meryem Nur Morgül Tumbaz, Hatice Tekiner Muğlkoç Nov 2015

Understanding Residential Electricity Consumption Considering Energy Efficiency Policies And The Impact On The Electricity System, Meryem Nur Morgül Tumbaz, Hatice Tekiner Muğlkoç

UBT International Conference

Electricity consumption increases substantially over the years where residential use significantly contributes to the overall consumption. The growth in the population and variety of home appliances together with increasing comfort levels of the people results in higher levels of residential electricity use. In fact, nearly one fourth of Turkey's total electricity consumption is due to the domestic use. To achieve global sustainability targets and reduce the overall electricity use, focusing on the domestic consumption is crucial. In this research, the energy consumptions patterns of households are determined to identify the potential electricity savings existing in the residential sector. Moreover, specific …

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Analysis Of Marmara Region Electrical Power System Stability Under The Critical Fault Conditions, Nihat Pamuk Nov 2015

Analysis Of Marmara Region Electrical Power System Stability Under The Critical Fault Conditions, Nihat Pamuk

UBT International Conference

Electrical power systems are such nonlinear systems that the ever changing working environments. Generator outputs, loads and the electrical power system parameters are continuously changing. In recent years, because of economic and environmental conditions, electrical power systems have been forced to work nearly maximum load capacity with the most efficient operating conditions. Accordingly, also, power flow and critical fault conditions analysis is a significant criterion for operation of electrical power systems. Modern power systems are planned for high level, multi-variable dynamic systems. In this study, 16 busbar section from 118 busbar interconnected 420 and 170 kV Marmara region electrical power …

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Importance Of Energy Efficiency In Power Engineering, Ines Bula, Edin Bula, Diellza Berisha Nov 2015

Importance Of Energy Efficiency In Power Engineering, Ines Bula, Edin Bula, Diellza Berisha

UBT International Conference

This paper aims to show the importance of energy efficiency in the power engineering, that it is essential to all areas of the economy and society, as well as for the environment. While saving energy always involves certain sacrifices from the usual habits, efficient use of energy has led to increased quality of life, greater competitiveness of companies and the economy as well as energy security. Energy sources that are most in use today are based on the combustion of fossil fuels, and supplies of these fuels have their limitations and should be used more efficiently, thus improving energy efficiency …

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New Configurations Of Housing Facilities Developed In Height. Pico Hydraulics, Consumption Become Energy, Kliton Bylykbashi, Luca Rubini Nov 2015

New Configurations Of Housing Facilities Developed In Height. Pico Hydraulics, Consumption Become Energy, Kliton Bylykbashi, Luca Rubini

UBT International Conference

The continuous growth of the population and the increasing demand of urbanization expansion towards the development of high-rise buildings. To meet their energy demand, the European Community is trying to address the designers to nearly zero-energy buildings. It is reasonably simple to produce a small residence totally energy efficient however it will be a real challenge to do the same for high-rise residential buildings. In the general research of the “P> 20” a building of more than 20 floors, equipped with renewable energy systems and with low impact technologies, with complete energy efficiency is studied energy self-sufficient. The first technology …

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Effect Of Steel Fiber And Polypropylene Fiber On Reinforced Concrete, Erjola Reufi, Jozefita Marku Nov 2015

Effect Of Steel Fiber And Polypropylene Fiber On Reinforced Concrete, Erjola Reufi, Jozefita Marku

UBT International Conference

This paper presents the results of an experimental study that investigated, the effects of steel fibers and polypropylene fibers on the mechanical properties of concrete. Two types of fibers used are hooked end steel fibers of 50 mm and 30 mm length with the aspect ratio of 67 (length 50 mm and diameter 0.75 mm) and 44 (length 30 mm and diameter 0.75 mm). On the other hand, three types of polypropylene fibers are used of length 12mm, 6mm and 3 mm. Steel fibers are used of 0%, 0.25%, 0.5%, and 1% by the volume of concrete and polypropylene fiber …

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A Study On Tibiofemoral Joint Contact Area Stresses Using Finite Element Method, Anjeza Gjini, Altin Bidaj, Enio Deneko, Drilona Disha Nov 2015

A Study On Tibiofemoral Joint Contact Area Stresses Using Finite Element Method, Anjeza Gjini, Altin Bidaj, Enio Deneko, Drilona Disha

UBT International Conference

The joints of the human body act as mechanical or building structures joints. Joints connect different segments by enabling the movement of these segments. The design of a joint that provides durability or static support differs from that one which provides only movement. Joints of the human body, as organic joints, are considered more complex than other types of joints. Finite element models help to comprehend the knee structure behavior under the action of dynamic and static loads. Deformations in the articulating cartilage and the distribution of loads from meniscus provide data to understand the effect of loads in different …

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