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Articles 14191 - 14220 of 16633
Full-Text Articles in Physical Sciences and Mathematics
Data Integrity Check Using Hash Functions In Cloud Environment, Selman Haxhijaha, Gazmend Bajrami, Fisnik Prekazi
Data Integrity Check Using Hash Functions In Cloud Environment, Selman Haxhijaha, Gazmend Bajrami, Fisnik Prekazi
UBT International Conference
The concept of cloud computing is currently being widely adopted by many business and organizations. Cloud Computing offers immense amount of resources, available for end users by employing various flexible paying methods. The opportunity to choose between several cloud providers is referred by complexity of integrated cloud computing solution. Cloud services offer many benefits to the data owner and users, but to take advantage of the benefits of cloud computing and to make the cloud viable as a computing platform, the data and the service hosted in the cloud must be fully secured. This research paper points out how third …
Evaluating Performance Of Data Mining Classification Algorithms In Diagnosing For Offloading Data Traffic In Mobile Networks, Irena Malolli, Kozeta Sevrani
Evaluating Performance Of Data Mining Classification Algorithms In Diagnosing For Offloading Data Traffic In Mobile Networks, Irena Malolli, Kozeta Sevrani
UBT International Conference
Mobile data traffic is significantly increased year by year due to a number of factors including new smart devices, new applications such as M2M, the so-called “always-on” applications and services etc. In addition the recent studies tell us that the forecasts for mobile data traffic in near future will be tenfold higher, while the revenue for this market is expected to be increased only twofold. This trend raised a number of challenges for the mobile network operators (MNOs) in the world and in our region. Different technical and commercial solutions are discussed and developed and / or under developing. The …
An Approach That Integrates Android Application With Google Scripts, Solves Different Problems Of Emergency Character, Tamara Luarasi
An Approach That Integrates Android Application With Google Scripts, Solves Different Problems Of Emergency Character, Tamara Luarasi
UBT International Conference
The several Cloud technologies, and their services extends the space of problems that can be solved by them in different fields. The problems are different, but often they represent the same scenario from the perspective of their solution by the cloud technologies and their integrations in different applications. Many situations can be adapted to this scenario: some users send their data into a central Google spreadsheet and a manager follows this spreadsheet. There are specific situations where we are not much interested on the storage of the data, but on the momentarily evidence of them and getting some emergency conclusions. …
A Neuro-Genetic Model In Gdp Forecasting: Case Study Albania, Dezdemona Gjylapi, Vladimir Kasemi
A Neuro-Genetic Model In Gdp Forecasting: Case Study Albania, Dezdemona Gjylapi, Vladimir Kasemi
UBT International Conference
The aim of this paper is to design a neural network model trained with genetic algorithms, called 'neuro-genetic' model, and to use it in Gross Domestic Product (GDP) forecasting. GDP is an economic indicator that represents the value at market prices of all goods and services produced within a country in a given period (usually a year). Its forecasting is of particular importance for the fiscal and monetary policy makers in the preparation of timetables aiming macroeconomic stability and su stainable economic growth. We use ten factors that affect the determination of the GDP for the Albania’s GDP forecasting. The …
Discovering Ict Tools Resources On Web To Support The Child Development, Eva Cipi
Discovering Ict Tools Resources On Web To Support The Child Development, Eva Cipi
UBT International Conference
This work summarizes the findings of a research effort undertaken to understand the links between child mental health and the uses of Information and Communication Technologies ICT. It is based on research conducted in the web aiming to identify the powerful role of ICT& multimedia tools on educational development process of yang people. Bringing a lot of web resources, this work aim to promote new methodologies on making easier the overall education process on schools. The research involves three stages starting from a short survey of children health across specific educational stages. Then we analyze and suggest specific conditions to …
Comparison Of Local Image Descriptors For Plant Identification From Leaf Images, Lameski Petre, Zdravevski Eftim, Kulakov Andrea
Comparison Of Local Image Descriptors For Plant Identification From Leaf Images, Lameski Petre, Zdravevski Eftim, Kulakov Andrea
UBT International Conference
In this paper we present several descriptors used for the task of Plant recognition based on the images of leaves. The set of descriptors include texture based descriptors, fractal descriptors as well as some of the state of the art descriptors for image retrieval and object recognition in images. The descriptors are generated from the leaf images taken from single leaves on homogenous background. The descriptors are then used for training classifiers from a dataset of leaf images. The comparison of the obtained results will be presented in this paper.
Swarm Intelligence As An Optimization Technique, Alma Bregaj
Swarm Intelligence As An Optimization Technique, Alma Bregaj
UBT International Conference
Optimization techniques inspired by swarm intelligence have become increasingly popular during the last years. Swarm intelligence is based on nature-inspired behaviours and is successfully applied to optimisation problems in a variety of fields. The advantage of these approaches over traditional techniques is their robustness and flexibility. These properties make swarm intelligence a successful design paradigm for algorithms that deal with increasingly complex problems. In this paper I am focused on the comparison between different swarm-based optimisation algorithms and I have presented some examples of real practical applications of these algorithms.
A Web-Based Platform For E-Learning And Blended Learning In Modelling And Simulation, Martin Bicher, Irene Hafner, Andreas Bauer, Carina Pöll, Niki Popper, Felix Breitenecker
A Web-Based Platform For E-Learning And Blended Learning In Modelling And Simulation, Martin Bicher, Irene Hafner, Andreas Bauer, Carina Pöll, Niki Popper, Felix Breitenecker
UBT International Conference
The Mathematics Modelling and Tools (MMT) e-learning system is a platform used for supporting lectures and tutoring at the Vienna University and Technology. Additionally to traditional e-learning properties like up- and download of lecture notes, videos and slides the MMT system provides the surface for a virtual modelling and simulation laboratory. Very powerful calculation software like MATLAB, Java or Octave, running in behind, allows experimenting with targeted modelling and simulation examples prepared and developed by experts. These are first of all used to support the presentation directly at the lecture and can afterwards be accessed by students given a password …
Architectures Technologies And Energy Efficiency Of Optical Networks, Sulejman D. Sulejmani
Architectures Technologies And Energy Efficiency Of Optical Networks, Sulejman D. Sulejmani
UBT International Conference
The Increasing of today's Internet services as are online video gaming, video games, video conferencing and video on demand in terms of multicasting has changed the concept of the classical approach to the networks because these services requires broadband frequency for data communication. The rapid expansion of the customer network, require wide bandwidth and increasing of energy expenditures. To gain energy efficiency we propose a novel architecture. The solution of these problems is solved by using of passive optical networks which are able to transmit data simultaneously in a broadband communication by using of optical multiplexers. The important parameters on …
Ann In Financial Prediction, Roneda Mucaj, Alketa Hyso
Ann In Financial Prediction, Roneda Mucaj, Alketa Hyso
UBT International Conference
This paper focuses on the treatment of intelligent systems and their application in the financial area. Types of intelligent systems are numerous, but we will focus on those systems, which based on their ability to learn, are able to predict. The concept of inductive reasoning, how these systems learn and reason inductively, the role and their integration in financial services are some of the concepts that will be addressed. The second and the main part focuses on the application developed in the design of an artificial neural network for financial forecasts. Recognizing the need for better predictive models, not just …
Testing And Assessment In Mathematics Via Web Applications, Stefanie Winkler, Carina Pöll, Andreas Körner, Niki Popper, Felix Breitenecker
Testing And Assessment In Mathematics Via Web Applications, Stefanie Winkler, Carina Pöll, Andreas Körner, Niki Popper, Felix Breitenecker
UBT International Conference
This paper deals with the web interface Maple T.A. which is used for mathematical education at the Vienna University of Technology. Maple T.A. is based on the computer algebra system Maple. This fact offers the possibility to test and assess the students in easy but also complex mathematical matters in an uncomplicated way. This interface was first used only for the refresher course. This course takes place in the first 3 weeks of the semester and deals with the repetition of all the important themes of the school mathematics. Maple T.A. is also used for the basic and advanced mathematical …
Using Machine Learning Techniques To Customize The User's Profile, Helps Intelligent Tv Decoder’S Design, Alketa Hyso, Roneda Mucaj
Using Machine Learning Techniques To Customize The User's Profile, Helps Intelligent Tv Decoder’S Design, Alketa Hyso, Roneda Mucaj
UBT International Conference
In today's society due to the increase of the quantity of information is becoming more difficult to find the information we search. "Data mining" offers us the most important methods and techniques in data analysis. Through this work, we aim to study the several data mining techniques, methods and applications in specific areas. We experiment with an “open software" WEKA, to perform some data analysis, presenting the reliability and advantages of data mining classification technique. We use the decision trees technique to achieve the task of classification, to customize user profiles based on their requirements and needs. This paper presents …
Project Scheduling And Role Of It, Besnik Skenderi, Diamanta Skenderi
Project Scheduling And Role Of It, Besnik Skenderi, Diamanta Skenderi
UBT International Conference
In the current business environment, companies around the world are conducting their business operations through project implementation. Moreover, project management as a profession is developed by bodies of knowledge and companies are investing in capacity building and in improvement of their internal procedures. Nowadays, different standards are used in a field of project management. However, despite the investment in the field of project management and hundreds of hours of delivered training to project managers, around 60% of the initiated projects in the world are failing and project scheduling is among identified reasons for project failure. Companies that are implementing projects, …
Community College Consortium Promotes Open Educational Practices Through Outreach And Collaboration, Una T. Daly, Lisa Storm, Barbara Illowsky
Community College Consortium Promotes Open Educational Practices Through Outreach And Collaboration, Una T. Daly, Lisa Storm, Barbara Illowsky
SJSU Open Access Conference
The Community College Consortium for Open Educational Resources (CCCOER) is a community of practice focused on awareness and promoting best practices for OER discovery and adoption including open textbooks, open MOOCs, and open repositories to enhance learning and teaching. Through monthly outreach webinars with OER leaders and online advisory meetings, the community shares their projects and expertise encouraging collaboration across institutions, disciplines, and higher education sectors. Hear from the consortium director and two leaders of the community college OER movement.
• Una Daly, Director of Community College Outreach, OpenCourseWare Consortium. Building a community to promote awareness and shared knowledge of …
Global Change Factors On Ecosystem Invasibility, Raj Lal, Jeffrey Dukes, Michael J. Schuster, Nick G. Smith
Global Change Factors On Ecosystem Invasibility, Raj Lal, Jeffrey Dukes, Michael J. Schuster, Nick G. Smith
The Summer Undergraduate Research Fellowship (SURF) Symposium
Current climate and human-induced changes are projected to alter many regimes of ecosystem functioning. It is projected that invasive species, nonnative species that can be of great detriment to an ecosystem, will benefit under these conditions. The Prairie Invasion and Climate Experiment (PRICLE) studies the effects of two global change factors – N addition and altered precipitation – on invasive species success and the traits that are selected for in a mixed-grass prairie ecosystem. PRICLE is a two by two factorial design over three replications in a restored mixed-grass prairie ecosystem. The major findings from the community traits examination of …
Web-Based Visual Analytics For Social Media Data, Jun Xiang Tee, David S. Ebert
Web-Based Visual Analytics For Social Media Data, Jun Xiang Tee, David S. Ebert
The Summer Undergraduate Research Fellowship (SURF) Symposium
Social media data provides valuable information about different events, trends and happenings around the world. Visual data analysis tasks for social media data have large computational and storage space requirements. Due to these restrictions, subdivision of data analysis tools into several layers such as Data, Business Logic or Algorithms, and Presentation Layer is often necessary to make them accessible for variety of clients. On server side, social media data analysis algorithms can be implemented and published in the form of web services. Visual Interface can then be implemented in the form of thin clients that call these web services for …
Next Generation Crystal Viewing Tool, Zach Schaffter, Gerhard Klimeck
Next Generation Crystal Viewing Tool, Zach Schaffter, Gerhard Klimeck
The Summer Undergraduate Research Fellowship (SURF) Symposium
The science and engineering community is limited when it comes to crystal viewing software tools. Each tool lacks in a different area such as customization of structures or visual output. Crystal Viewer 2.0 was created to have all of these features in one program. This one tool simulates virtually any crystal structure with any possible material. The vtkvis widget offers users advanced visual options not seen in any other crystal viewing software. In addition, the powerful engine behind Crystal Viewer 2.0, nanoelectronic modeling 5 or (NEMO5), performs intensive atomic calculations depending on user input. A graphical user interface, or GUI, …
Investigation Of Time Varying Nuclear Decay Rates, Peter G. Barton, Rafael F. Lang
Investigation Of Time Varying Nuclear Decay Rates, Peter G. Barton, Rafael F. Lang
The Summer Undergraduate Research Fellowship (SURF) Symposium
Since the discovery of radioactive decay, radioactive decay rates have consistently shown to be constant. Recently, groups of researchers around the world have noticed variation in the decay rates of different radioactive isotopes, while other groups have noticed no such effect. If the variation is truly varying decay rates, this would imply groundbreaking new physics and would have implications for practices such as carbon dating. More sophisticated experiments are required to determine if the variations are truly new physics or systematic effects inherent to nuclear decay experiments. We are building an experiment where activity data from various radioactive sources will …
Optimization Of Polymer Separation By Gradient Polymer Elution Chromatography, Gideon R. Liem, Linda Nien-Hwa Wang
Optimization Of Polymer Separation By Gradient Polymer Elution Chromatography, Gideon R. Liem, Linda Nien-Hwa Wang
The Summer Undergraduate Research Fellowship (SURF) Symposium
High Performance Liquid Chromatography (HPLC) has been a versatile separation method for polymers for many years. Analysis of different polymers by HPLC is typically done by utilizing the differential solubility of the polymers by mixing a good solvent and an anti-solvent in various compositions. This method is called Gradient Polymer Elution Chromatography (GPEC). While GPEC has been used extensively, it commonly uses a linear gradient to separate components. Linear solvent gradients consume a lot of solvent and take a relatively long time (> 30 minutes) to complete. The goal of this study is to develop a step gradient from a …
Elementary Studies Of Twisted Bilayer Graphene, Branden P. Burns, Yong P. Chen
Elementary Studies Of Twisted Bilayer Graphene, Branden P. Burns, Yong P. Chen
The Summer Undergraduate Research Fellowship (SURF) Symposium
In the nanotechnology field, some existing materials and applications are harmful to the environment, not efficient for certain tasks, or too expensive to be fully utilized. Graphene is a strong and cheap material that can be used to improve current nanotechnologies for more practical uses in society. Twisted bilayer graphene (TBG) is an orientation of graphene layers that exhibit different properties than regular bilayer graphene. It is made by placing a single layer of graphene on top of another at an angle with respect to the other lattice orientation. Understanding the characteristics of TBG is important to uncover more physics …
Investigating Intermolecular Interactions In Crystalline Aspirin Using Cdft, Nicholas Turner, Tonglei Li, Mingtao Zhang
Investigating Intermolecular Interactions In Crystalline Aspirin Using Cdft, Nicholas Turner, Tonglei Li, Mingtao Zhang
The Summer Undergraduate Research Fellowship (SURF) Symposium
Drugs today are widely administered in their crystalline form, namely via tablets and capsules. The crystal structure of a drug molecule affects important drug qualities such as solubility, bioavailability, shelf life, and compaction properties. In order to form a basis for crystal structure prediction, it is necessary to first understand how intermolecular interactions cause molecules to pack in certain ways. Being able to predict and perhaps even control a drug molecule’s crystal structure will lead to the development of higher quality drugs that perform more consistently. Scientists and engineers do not fully understand the reasons for a molecule assuming a …
Driftwatch Pollinator Mapping Application, Shreyas G. Sundararaman, Larry Theller, Bernard Engel
Driftwatch Pollinator Mapping Application, Shreyas G. Sundararaman, Larry Theller, Bernard Engel
The Summer Undergraduate Research Fellowship (SURF) Symposium
Over 65% percent of food consumed in the United States is pollinated by bees. Unfortunately, due to poor farming practices, pesticides are sprayed in bee sensitive areas unknowingly and as a result, the bee population is dwindling at an alarming rate. With lesser bees to pollinate crops, produce is compromised on a very large scale and this could have disastrous impacts on the nation's needs for food. Apiarists and beehive owners face the major responsibility of ensuring that their hives aren't affected by dangerous insecticides and pesticides from the farming areas that they might visit during their crop pollination cycles …
Nanohub - Crystal Viewer 2.0, Kevin Margatan, Gerhard Klimeck
Nanohub - Crystal Viewer 2.0, Kevin Margatan, Gerhard Klimeck
The Summer Undergraduate Research Fellowship (SURF) Symposium
nanoHUB is an online compilation of tools for simulations. Equipped with 3-D simulations and a capability to solve very complex calculations, nanoHUB provides its users worldwide with various tools to help them finish their assignments. One of the tools available is called a Crystal Viewer Tool, an advanced crystal visualization tool. This tool allows users to generate various crystal types including their every single detail. Currently, a newer version, called Crystal Viewer 2.0, is being tested prior to its release. However, this tool is lacking some important features and a GUI that is not as user friendly as expected. The …
Investigation Of Major Intermolecular Interactions In 7,8-Dihydrobenzo(K)Phenanthridin-6(5h)-One Crystal Using Quantum Calculations And Crystallographic Visualization Programs, Zhiwei Liao, Tonglei Li, Mingtao Zhang
Investigation Of Major Intermolecular Interactions In 7,8-Dihydrobenzo(K)Phenanthridin-6(5h)-One Crystal Using Quantum Calculations And Crystallographic Visualization Programs, Zhiwei Liao, Tonglei Li, Mingtao Zhang
The Summer Undergraduate Research Fellowship (SURF) Symposium
Currently, tablets and capsules are the most common ways of delivering drugs. The active pharmaceutical ingredients and excipients used to make those tablets and capsules are in their crystalline form generally. However, a single molecule can form multiple different crystal structures because of different packing arrangements of the molecules. These different crystal structures have identical chemical composition but different properties such as solubility, density, stability, etc. This phenomenon is called polymorphism. Occurrence of polymorphism could be a disaster for both patients and pharmaceutical companies, as the drug could lose its efficacy due to changes in properties. Studying intermolecular interactions in …
Gaussian Representation Of Active Galactic Nuclei, Jeffrey W. Klimes, Matthew Lister
Gaussian Representation Of Active Galactic Nuclei, Jeffrey W. Klimes, Matthew Lister
The Summer Undergraduate Research Fellowship (SURF) Symposium
Active galactic nuclei (AGN) are the areas around the centers of galaxies with high luminosity in much of the electromagnetic spectrum. The existing model of AGN describes the high luminosity as the result of accretion of matter around a black hole at the galaxy’s center. Many AGN generate superluminal jets of density higher than the surrounding interstellar medium. The cause for and mechanics driving the relativistic jets are not well understood. In addition, the jets often change direction decaparsecs away from their associated cores, the cause of which has not been well explained. In order to better understand the mechanics …
Is Real-Time Mobile Content-Based Image Retrieval Feasible?, Colin G. Graber, Anup Mohan, Yung-Hsiang Lu
Is Real-Time Mobile Content-Based Image Retrieval Feasible?, Colin G. Graber, Anup Mohan, Yung-Hsiang Lu
The Summer Undergraduate Research Fellowship (SURF) Symposium
Content-based image retrieval (CBIR) is a method of searching through a database of images by using another image as a query instead of text. Recent advances in the processing power of smart phones and tablets, collectively known as mobile devices, have prompted researchers to attempt to construct mobile CBIR systems. Most of the research that has been conducted on mobile CBIR has focused on improving either its accuracy or its run-time, but not both simultaneously. We set out to answer the question: is real-time CBIR with manageable accuracy possible on current mobile devices? To find the answer to this question, …
High-Order Shock Capturing For Computational Aeroacoustics, Samuel Otto, Gregory Blaisdell
High-Order Shock Capturing For Computational Aeroacoustics, Samuel Otto, Gregory Blaisdell
The Summer Undergraduate Research Fellowship (SURF) Symposium
Jet noise is not only an annoyance to passengers and communities near airports, it is a major contributor to hearing loss in veterans who served on aircraft carriers, as well as a significant limiting factor for the growth of commercial airlines. High-fidelity large eddy simulation (LES) is an important tool for analyzing and predicting jet noise; however the utilized non-dissipative high order finite difference schemes produce instabilities at shock waves. Schemes for capturing shock waves, however, are more dissipative and do a poor job preserving turbulent structures and acoustic waves. To maximize the strengths of both approaches, hybrid methods utilize …
Fabrication Of Multilayered Structure For Coherent Random Lasing, John Rauchenstein, Young L. Kim
Fabrication Of Multilayered Structure For Coherent Random Lasing, John Rauchenstein, Young L. Kim
The Summer Undergraduate Research Fellowship (SURF) Symposium
High powered lasers have many applications, including medical treatment and surgery. However, these lasers are extremely expensive and are therefore not widely available. The aim of this study was to demonstrate a method to create such a laser with significantly decreased overall cost and increased efficiency. In order to do this, we explored a phenomenon called random lasing which is a light amplification process. To start with, a low-cost pumping laser is directed at normal incidence toward a multi-layered sample with two alternating layers. At first pearl, a naturally found material that has many organic nano-scale layers (similar to the …
Deep-Water Near-Bottom Turbulence In Lake Michigan: An Underwater Investigation, David J. Cannon, Cary Troy
Deep-Water Near-Bottom Turbulence In Lake Michigan: An Underwater Investigation, David J. Cannon, Cary Troy
The Summer Undergraduate Research Fellowship (SURF) Symposium
Motivated by a need to characterize near-bottom deep-water turbulence for an understanding of the filtration capabilities of invasive quagga mussels, an instrument tripod was deployed in Lake Michigan for six months in 60m of water to measure current velocities, with specific interest being paid to near-bottom (0.10 to 0.95 meters above bottom) velocities during the deployment. The deployment period (September 2012-April 2013) was characterized by very little stratification and a median temperature of about throughout the water column. A mean horizontal velocity of 3.6 cm/s with a standard deviation of 2 cm/s was also measured at 1 meter above the …
Kentucky Forage Spokesperson Contest, Kentucky Forage And Grassland Council
Kentucky Forage Spokesperson Contest, Kentucky Forage And Grassland Council
Kentucky Grazing Conference
No abstract provided.