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2018

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Articles 121 - 150 of 1217

Full-Text Articles in Computer Engineering

Field Oriented Sliding Mode Control Of Surface-Mounted Permanent Magnet Ac Motors: Theory And Applications To Electrified Vehicles, Xin Wang, Max Reitz, Edwin E. Yaz Nov 2018

Field Oriented Sliding Mode Control Of Surface-Mounted Permanent Magnet Ac Motors: Theory And Applications To Electrified Vehicles, Xin Wang, Max Reitz, Edwin E. Yaz

Electrical and Computer Engineering Faculty Research and Publications

Permanent magnet ac motors have been extensively utilized for adjustable-speed traction motor drives, due to their inherent advantages including higher power density, superior efficiency and reliability, more precise and rapid torque control, larger power factor, longer bearing, and insulation life-time. Without any proportional-and-integral (PI) controllers, this paper introduces novel first- and higher-order field-oriented sliding mode control schemes. Compared with the traditional PI-based vector control techniques, it is shown that the proposed field oriented sliding mode control methods improve the dynamic torque and speed response, and enhance the robustness to parameter variations, modeling uncertainties, and external load perturbations. While both first- …

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Impacts Of Operators’ Behavior On Reliability Of Power Grids During Cascading Failures, Zhuoyao Wang, Mahshid Rahnamay-Naeini, Joana M. Abreu, Rezoan A. Shuvro, Pankaz Das, Andrea Mammoli, Nasir Ghani, Majeed M. Hayat Nov 2018

Impacts Of Operators’ Behavior On Reliability Of Power Grids During Cascading Failures, Zhuoyao Wang, Mahshid Rahnamay-Naeini, Joana M. Abreu, Rezoan A. Shuvro, Pankaz Das, Andrea Mammoli, Nasir Ghani, Majeed M. Hayat

Electrical and Computer Engineering Faculty Research and Publications

Human operators play a key role in the reliable operation of critical infrastructures. However, human operators may take actions that are far from optimum. This can be due to various factors affecting the operators' performance in time-sensitive and critical situations such as reacting to contingencies with significant monetary and social impacts. In this paper, an analytic framework is proposed based on Markov chains for modeling the dynamics of cascading failures in power grids. The model captures the effects of operators' behavior quantified by the probability of human error under various circumstances. In particular, the observations from historical data and information …

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Real-Time Facial Expression And Speech Emotion Recognition App Development On Mobile Phones Using Cloud Computing, Humaid Saif Saeed Alasli Alshamsi Nov 2018

Real-Time Facial Expression And Speech Emotion Recognition App Development On Mobile Phones Using Cloud Computing, Humaid Saif Saeed Alasli Alshamsi

Theses and Dissertations

Emotion plays a vital role in humans’ daily lives. Understanding emotions and recognizing how to react to others’ feelings are fundamental to engaging in successful social interactions. Emotion recognition through facial expression and speech play a significant role in human communication. This subject is becoming important in academic research as new techniques such as emotion recognition from speech context inspire us to recognize how emotions are related to the content we are uttering. The demand and importance of emotion recognition have highly increased in many applications in recent years, such as video games, human-computer interactions, cognitive computing, and affective computing. …

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Cloud Oriented Additive Technology Use For Fast Prototype Development, Betim Shabani, Vladimir Dukovski Oct 2018

Cloud Oriented Additive Technology Use For Fast Prototype Development, Betim Shabani, Vladimir Dukovski

UBT International Conference

Digitalization has already affected every segment of the industry and especially manufacturing. Based on market requires that are more specific and faster than ever, there is a need to use some of the online platform packages called Cloud Manufacturing (CM). CM operate through the digital data then here comes the expression CAD models or in particular STL files that are currently adequate for Additive Technologies (AT). On the other hand, there is a rapid increase in the measurement aspects via non-contact forms (3D scanners) where their data are stored in various digital formats: IGES, OBJ, PLY, etc.). Those formats can …

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The Importance Of Cad/Cae Systems In Development Of Product Design And Process Of Optimization, Fatmir Azemi, Xhemajl Mehmeti, Bekim Maloku Oct 2018

The Importance Of Cad/Cae Systems In Development Of Product Design And Process Of Optimization, Fatmir Azemi, Xhemajl Mehmeti, Bekim Maloku

UBT International Conference

Computer Aided Design (CAD) and Computer Aided Engineering (CAE) are the most important technology tools that today designers are using in development of product (design and in process of optimization). Thus, this study is carried out to present the importance of CAD/CAE system on process of design and process of optimization of spur gear. The paper presents the usage of CAD system for modeling parts and CAE software for analysis of stress-strain of spur gear and the results of calculation of pair spur-gears that it used in the gearbox transmission of the bucket wheel excavator located in “Bardhi i Madh …

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Multithreading Technique Improvement In Processing Client Server Communication By Utilizing Object Oriented Language, Eda Tabaku, Kliv Shapllo, Senada Bushati Oct 2018

Multithreading Technique Improvement In Processing Client Server Communication By Utilizing Object Oriented Language, Eda Tabaku, Kliv Shapllo, Senada Bushati

UBT International Conference

A comparison of an application’s performance, when a program is executed through multiple threads and only a thread to complete a specified task by using Java techniques. In this paper will be expounded how a Java programmer can profit by technology facilities. How to create a program that executes in a parallel way, that solves independent tasks not one after the other, but all at the same time. The application that is developed(the environment used is Eclipse) aims to speed up the time needed to download images from a specific website, but it is flexible for downloading images also from …

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Performance Analysis Of Java Persistence Api Providers, Besart Pllana Oct 2018

Performance Analysis Of Java Persistence Api Providers, Besart Pllana

UBT International Conference

Nowadays, fast and accurate access to data is very important. Usually data is managed and processed through software applications. In recent years, the most preferred programming model by most application developers is Object Oriented Programming (OOP) where data is represented through objects. These data must be persistent and therefore needs to be stored, and storage can be done on a variety of databases. The most common databases are Relational Database Management Systems (RDBMS). While persistence of objects in RDBMS is limited by object-relational mismatch which is the inconsistency of the direct interaction between two components based on different approaches, OOP …

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The Moving Object Reflected Under Matlab Test-Bench (Simulation Model Through Buit-In Functions), Virtyt Lesha, Jozef Bushati, Dea Strica Oct 2018

The Moving Object Reflected Under Matlab Test-Bench (Simulation Model Through Buit-In Functions), Virtyt Lesha, Jozef Bushati, Dea Strica

UBT International Conference

Digital image processing is an area that finds many applications in three-dimensional graphics. One of the subjects considered in image processing is detection of moving objects. In this paper, we have analyzed the performance of an algorithm that detects a moving object. The performance relates to the speed of moving object during a pre-determined time interval. The methodology supports Matlab integrated with built-in functions. Specifically, as input of the simulation model is a video material containing moving objects. The model reads a video file presenting moving objects; after the model is executed in Matlab, the output emits moving objects associated …

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Designing A Controller Via Simulated Annealing, Zemerart Asani, Selvet Rexhepi Oct 2018

Designing A Controller Via Simulated Annealing, Zemerart Asani, Selvet Rexhepi

UBT International Conference

With Proportional-Integral-Derivative (PID) controllers being widely used in industry for optimum solutions. Optimization of the PID controller is an important problem in Control Engineering. Therefore, in this paper work we have implemented Simulated Annealing to tune the controller parameters. Optimizing the controller parameters on the basis of the Simulated Annealing algorithm, based on criteria defined using an objective function, allows us to find optimal solutions for the controller parameters that give us minimum error. In terms of performance, the PID controller designed with Simulated Annealing gives us great results with regard to the rise time, settling time, overshoot and steady-state …

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Nb-Iot: A Network Slice For Massive Iot, Xhafer Krasniqi Oct 2018

Nb-Iot: A Network Slice For Massive Iot, Xhafer Krasniqi

UBT International Conference

Network virtualisation is a concept that has been around for some time now, but the concept of network slicing is more recent and only started to be mentioned in the context of 5G. In essence, network slicing is a specific form of network virtualisation that enables sharing of physical resources by multiple logical network slices used to serve different applications and use cases. One such a use case would be to allocate network resources to small things, e.g. sensors and very low power consumption objects. To allow these small objects access to network resources or to a slice of such …

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Review Of Cloud Migration Strategies And Providers – An Iaas Migration Strategy, Florinda Imeri, Agon Memeti Oct 2018

Review Of Cloud Migration Strategies And Providers – An Iaas Migration Strategy, Florinda Imeri, Agon Memeti

UBT International Conference

Companies are addressing the Cloud Computing issue more actively recently, as a part of a move towards a more agile and flexible IT infrastructure since benefitting from an IT infrastructure that is flexible, scalable, high-performance and up-to-date is no longer a luxury or the exception to a rule. The issue they address is “Which is the best strategy?” Of course, this is not a simple issue given that the cloud can impact an organization’s application picture across several dimensions. When an organizations made the decision to consider cloud services for its application or infrastructure deployment, it’s important to understand the …

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Simulation Based Optimisation Of Ground Crews: Case Of A Regional Airport, Blaz Rodic, Alenka Baggia Oct 2018

Simulation Based Optimisation Of Ground Crews: Case Of A Regional Airport, Blaz Rodic, Alenka Baggia

UBT International Conference

Paper presents the simulation models built within an airport ground crew scheduling automatization project at a regional airport. Our goal was to develop robust ground crew task scheduling and shift generation algorithms that would improve on existing heuristic rules. We have utilized simulation modeling to develop and validate the algorithms, starting with a model of the existing scheduling process coded and visualized in spreadsheet software and ending with a hybrid Discrete Event and Agent Based model used for the visualization and verification of the optimized processes. Explicit and tacit expert knowledge was recorded through meetings with airport personnel managers and …

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An Implementation Of Weighted Least Squares Method In Central Bank Twitter Accounts Grew Prediction, Goran Bjelobaba, Ana Savic, Radosav Veselinovic, Hana Stefanovic Oct 2018

An Implementation Of Weighted Least Squares Method In Central Bank Twitter Accounts Grew Prediction, Goran Bjelobaba, Ana Savic, Radosav Veselinovic, Hana Stefanovic

UBT International Conference

This paper presents some advantages of using social media and social networks as an efficient way of Central Banks communication with target audience. The statistics given in this paper presents some leading banks based on number of followers on Twitter in 2018, showing that Indonesia’s Central Bank has more Twitter followers than any other monetary authority, beating out the Banco de Mexico, Federal Reserve, European Central Bank and Reserve Bank of India. In this paper some prediction of number of Twitter followers in Central Bank communication is also contributed, based on Weighted Least Squares method. An algorithm is implemented in …

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Efficiency Of Calculating Gcd Through Computer With Help Of Modified Euclidean Algorithm, Emin Emini, Azir Jusufi, Ruhada Emini Oct 2018

Efficiency Of Calculating Gcd Through Computer With Help Of Modified Euclidean Algorithm, Emin Emini, Azir Jusufi, Ruhada Emini

UBT International Conference

Euclid’s algorithm remains to be the most efficient method for finding greatest common divisor of two full numbers. By using the meaning of congruences this research paper will make a modification in the note of the Euclid’s algorithm. Here are discussed both classic and modified methods, by putting appropriate codes and observe the duration of the calculation through the computer.

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Combining Cryptographic Primitives According To Security Metrics And Vulnerabilities In Real Systems, Blerina Çeliku, Rafail Prodani, Emis Simo Oct 2018

Combining Cryptographic Primitives According To Security Metrics And Vulnerabilities In Real Systems, Blerina Çeliku, Rafail Prodani, Emis Simo

UBT International Conference

There are so many applications and data that flow during our daily activities, either personal or institutional ones. Also the companies and business do transactions or their real operations through the Web and other Internet facilities. Security breaches are costing individuals or companies millions so information security has to be a major priority. There are several forms of security technology available, but encryption is one that everyday computer users should know about. Encryption and the performance of cryptographic algorithms are variable according to implemented platforms, software and hardware components or application scenarios. According to specific security metrics and requirements we …

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Technology Mediated Nudging In A Mobile Health Context, My Zetterholm, Päivi Jokela, Lina Nilsson Oct 2018

Technology Mediated Nudging In A Mobile Health Context, My Zetterholm, Päivi Jokela, Lina Nilsson

UBT International Conference

According to a vision for eHealth that was launched in 2016 by the Swedish Government, Sweden will be leading the way in using the potential of digitalization and eHealth to help people achieve a good and equal health. To achieve this vision, we argue that initiatives in eHealth need to augment the traditional health perspective. This implies a more preventive approach that transforms the health concept to a continuous participative process over the life course. A stronger emphasis is needed to develop high quality mobile and web based systems in order to empower people to pursue a healthy lifestyle. A …

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Gate Level Probabilistic Simulation Based Hardware Trojan Susceptibility Analysis Of Combinational Circuits, Venkata Lakshmi Bhargavi Gurram Oct 2018

Gate Level Probabilistic Simulation Based Hardware Trojan Susceptibility Analysis Of Combinational Circuits, Venkata Lakshmi Bhargavi Gurram

USF Tampa Graduate Theses and Dissertations

Today multi-million gate integrated circuits are being commonly used in many critical (eg., health care) and sensitive (eg., military) applications. Therefore, they are susceptible to malicious modifications, namely, Hardware Trojans (HTs), with the intent of leaking sensitive information, denial-of-service etc. There are many ways of inserting Hardware Trojans in ICs. Thus, HT detection and mitigation are very important tasks. In this thesis, we propose a novel probabilistic simulation based approach to estimate the susceptibility of a combinational circuit to a HT. One of the common ways is to simulate the netlist with typical input sequences and identifying low activity nets …

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Optical Wireless Data Center Networks, Abdelbaset S. Hamza Oct 2018

Optical Wireless Data Center Networks, Abdelbaset S. Hamza

School of Computing: Dissertations, Theses, and Student Research

Bandwidth and computation-intensive Big Data applications in disciplines like social media, bio- and nano-informatics, Internet-of-Things (IoT), and real-time analytics, are pushing existing access and core (backbone) networks as well as Data Center Networks (DCNs) to their limits. Next generation DCNs must support continuously increasing network traffic while satisfying minimum performance requirements of latency, reliability, flexibility and scalability. Therefore, a larger number of cables (i.e., copper-cables and fiber optics) may be required in conventional wired DCNs. In addition to limiting the possible topologies, large number of cables may result into design and development problems related to wire ducting and maintenance, heat …

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Image Zooming Using Corner Matching, Ronald Marsh, Md Nurul Amin, Charles Crandall, Raymond Davis Oct 2018

Image Zooming Using Corner Matching, Ronald Marsh, Md Nurul Amin, Charles Crandall, Raymond Davis

Computer Science Faculty Publications

This work was intended to direct the choice of an image interpolation/zoom algorithm for use in UND’s Open Prototype for Educational Nanosats (OPEN) satellite program. Whether intended for a space-borne platform or a balloon-borne platform, we expect to use a low cost camera (Raspberry Pi) and expect to have very limited bandwidth for image transmission. However, the technique developed could be used for any imaging application. The approach developed analyzes overlapping 3x3 blocks of pixels looking for “L” patterns that suggest the center pixel should be changed such that a triangle pattern results. We compare this approach against different types …

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Containers And Reproducibility In Scientific Research, Sara Faraji Jalal Apostal, David Apostal, Ronald Marsh Oct 2018

Containers And Reproducibility In Scientific Research, Sara Faraji Jalal Apostal, David Apostal, Ronald Marsh

Computer Science Faculty Publications

Numerical reproducibility has received increased emphasis in the scientific community. One reason that makes scientific research difficult to repeat is that different computing platforms calculate mathematical operations differently. Software containers have been shown to improve reproducibility in some instances and provide a convenient way to deploy applications in a variety of computing environments. However, there are software patterns or idioms that produce inconsistent results because mathematical operations are performed in different orders in different environments resulting in reproducibility errors. The performance of software in containers and the performance of software that improves numeric reproducibility may be of concern for some …

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Reinforcement Learning In Robotic Task Domains With Deictic Descriptor Representation, Harry Paul Moore Oct 2018

Reinforcement Learning In Robotic Task Domains With Deictic Descriptor Representation, Harry Paul Moore

LSU Doctoral Dissertations

In the field of reinforcement learning, robot task learning in a specific environment with a Markov decision process backdrop has seen much success. But, extending these results to learning a task for an environment domain has not been as fruitful, even for advanced methodologies such as relational reinforcement learning. In our research into robot learning in environment domains, we utilize a form of deictic representation for the robot’s description of the task environment. However, the non-Markovian nature of the deictic representation leads to perceptual aliasing and conflicting actions, invalidating standard reinforcement learning algorithms. To circumvent this difficulty, several past research …

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Keyword-Based Patent Citation Prediction Via Information Theory, Farshad Madani, Martin Zwick, Tugrul U. Daim Oct 2018

Keyword-Based Patent Citation Prediction Via Information Theory, Farshad Madani, Martin Zwick, Tugrul U. Daim

Engineering and Technology Management Faculty Publications and Presentations

Patent citation shows how a technology impacts other inventions, so the number of patent citations (backward citations) is used in many technology prediction studies. Current prediction methods use patent citations, but since it may take a long time till a patent is cited by other inventors, identifying impactful patents based on their citations is not an effective way. The prediction method offered in this article predicts patent citations based on the content of patents. In this research, Reconstructability Analysis (RA), which is based on information theory and graph theory, is applied to predict patent citations based on keywords extracted from …

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Datanet: Deep Learning Based Encrypted Network Traffic Classification In Sdn Home Gateway, Pan Wang, Feng Ye, Xuejiao Chen, Yi Qian Oct 2018

Datanet: Deep Learning Based Encrypted Network Traffic Classification In Sdn Home Gateway, Pan Wang, Feng Ye, Xuejiao Chen, Yi Qian

Department of Electrical and Computer Engineering: Faculty Publications

A smart home network will support various smart devices and applications, e.g., home automation devices, E-health devices, regular computing devices, and so on. Most devices in a smart home access the Internet through a home gateway (HGW). In this paper, we propose a software-defined network (SDN)-HGW framework to better manage distributed smart home networks and support the SDN controller of the core network. The SDN controller enables efficient network quality-of-service management based on real-time traffic monitoring and resource allocation of the core network. However, it cannot provide network management in distributed smart homes. Our proposed SDN-HGW extends the control to …

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Effective Methods And Tools For Mining App Store Reviews, Nishant Jha Oct 2018

Effective Methods And Tools For Mining App Store Reviews, Nishant Jha

LSU Doctoral Dissertations

Research on mining user reviews in mobile application (app) stores has noticeably advanced in the past few years. The main objective is to extract useful information that app developers can use to build more sustainable apps. In general, existing research on app store mining can be classified into three genres: classification of user feedback into different types of software maintenance requests (e.g., bug reports and feature requests), building practical tools that are readily available for developers to use, and proposing visions for enhanced mobile app stores that integrate multiple sources of user feedback to ensure app survivability. Despite these major …

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A Novel Indoor Positioning System For Firefighters In Unprepared Scenarios, Vamsi Karthik Vadlamani Oct 2018

A Novel Indoor Positioning System For Firefighters In Unprepared Scenarios, Vamsi Karthik Vadlamani

Electrical and Computer Engineering ETDs

Situational awareness and indoor positioning of firefighters are types of information of paramount importance to the success of search and rescue operations. GPS units are undependable for use in Indoor Positioning Systems due to their associated mar- gins of error in position and their reliance on satellite communication that can be interrupted inside large structures. There are few other techniques like dead reck- oning, Wifi and bluetooth based triangulation, Structure from Motion (SFM) based scene reconstruction for Indoor positioning system. However due to high temper- atures, the rapidly changing environment of fires, and low parallax in the thermal images, the …

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Design And Implementation Of A Hybrid Face Recognition Technique, Asim S. Chaudhry Oct 2018

Design And Implementation Of A Hybrid Face Recognition Technique, Asim S. Chaudhry

Morehead State Theses and Dissertations

A thesis presented to the faculty of the Elmer R. Smith College of Business and Technology at Morehead State University in Partial Fulfillment of the requirements for the Degree Master of Science by Asim S. Chaudhry on October 16, 2018.

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Birefringence Imaging Chromatography Based On Highly Ordered 3d Nanostructures, Mathias M. Schubert, Tino Hofmann, David S. Hage, Erika Pfaunmiller, Craig M. Herzinger, John A. Woollam, Stefan Schoeche Oct 2018

Birefringence Imaging Chromatography Based On Highly Ordered 3d Nanostructures, Mathias M. Schubert, Tino Hofmann, David S. Hage, Erika Pfaunmiller, Craig M. Herzinger, John A. Woollam, Stefan Schoeche

Department of Electrical and Computer Engineering: Faculty Publications

Ellipsometers and polarimeters or the like to investigate analyte containing fluids applied to a substrate - stage having a multiplicity of nano - structures that project non - normal to a surface thereof , including dynamics of interaction there with , to the end of evaluating and presenting at least partial Jones or Mueller Matricies corresponding to a multiplicity of locations over an imaged area .

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Bipartite Quantum Interactions: Entangling And Information Processing Abilities, Siddhartha Das Oct 2018

Bipartite Quantum Interactions: Entangling And Information Processing Abilities, Siddhartha Das

LSU Doctoral Dissertations

The aim of this thesis is to advance the theory behind quantum information processing tasks, by deriving fundamental limits on bipartite quantum interactions and dynamics. A bipartite quantum interaction corresponds to an underlying Hamiltonian that governs the physical transformation of a two-body open quantum system. Under such an interaction, the physical transformation of a bipartite quantum system is considered in the presence of a bath, which may be inaccessible to an observer. The goal is to determine entangling abilities of such arbitrary bipartite quantum interactions. Doing so provides fundamental limitations on information processing tasks, including entanglement distillation and secret key …

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Using Augmented Reality To Enhance Learning Experiences About Electrical Circuits, Juan Estrella Oct 2018

Using Augmented Reality To Enhance Learning Experiences About Electrical Circuits, Juan Estrella

Publications and Research

The term Augmented Reality (AR) refers to the technologies that superimpose digital content generated by computers over the user’s view of the real world. AR technologies enhance the version of the physical environment with computer-generated sensory input such as sound, video, or graphics overlaid on top of the real-world view. In recent years, AR has moved beyond expensive military applications and has now entered a wide variety of domains. In engineering education, AR technologies can serve as a learning aid as well as a basis for innovation. The technology provides 3-D visualizations that allow to: (i) observe flaws in designs …

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A New Framework For Securing, Extracting And Analyzing Big Forensic Data, Hitesh Sachdev, Hayden Wimmer, Lei Chen, Carl Rebman Oct 2018

A New Framework For Securing, Extracting And Analyzing Big Forensic Data, Hitesh Sachdev, Hayden Wimmer, Lei Chen, Carl Rebman

Journal of Digital Forensics, Security and Law

Finding new methods to investigate criminal activities, behaviors, and responsibilities has always been a challenge for forensic research. Advances in big data, technology, and increased capabilities of smartphones has contributed to the demand for modern techniques of examination. Smartphones are ubiquitous, transformative, and have become a goldmine for forensics research. Given the right tools and research methods investigating agencies can help crack almost any illegal activity using smartphones. This paper focuses on conducting forensic analysis in exposing a terrorist or criminal network and introduces a new Big Forensic Data Framework model where different technologies of Hadoop and EnCase software are …

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