Computer Sciences Commons^™

Structure And Randomness Of The Discrete Lambert Map, Jingjing Chen, Mark Lotts

Mathematical Sciences Technical Reports (MSTR)

We investigate the structure and cryptographic applications of the Discrete Lambert Map (DLM). The mapping is closely related to the Discrete Log Problem, but has received far less attention since it is considered to be a more complicated map that is likely even harder to invert. However, this mapping is quite important because it underlies the security of the ElGamal Digital Signature Scheme. Using functional graphs induced by this mapping, we were able to find non-random properties that could potentially be used to exploit the ElGamal DSS.

The Square Discrete Exponentiation Map, A Wood

Mathematical Sciences Technical Reports (MSTR)

We will examine the square discrete exponentiation map and its properties. The square discrete exponentiation map is a variation on a commonly seen problem in cryptographic algorithms. This paper focuses on understanding the underlying structure of the functional graphs generated by this map. Specifically, this paper focuses on explaining the in-degree of graphs of safe primes, which are primes of the form p = 2q + 1, where q is also prime.

Fast Relabeling Of Deformable Delaunay Tetrahedral Meshes Using A Compact Uniform Grid, David C. Frogley

Theses and Dissertations

We address the problem of fast relabeling of deformable Delaunay tetrahedral meshes using a compact uniform grid, with CPU parallelization through OpenMP. This problem is important in visualizing the simulation of deformable objects and arises in scientific visualization, games, computer vision, and motion picture production. Many existing software tools and APIs have the ability to manipulate 3D virtual objects. Prior mesh-based representations either allow topology changes or are fast. We aim for both. Specifically, we improve the efficiency of the relabeling step in the Delaunay deformable mesh invented by Pons and Boissonnat and improved by Tychonievich and Jones. The relabeling …

Augmenting Online Learning With Real-Time Conferencing: Experiences From An International Course, Bjørn Erik Munkvold, Ilze Zigurs, Deepak Khazanchi

Information Systems and Quantitative Analysis Faculty Proceedings & Presentations

This paper reports experiences from the use of real-time conferencing to support synchronous class interaction in an international online course. Through combination of video, audio, application sharing and chat, the students and instructors engaged in weekly interactions in a virtual classroom. This created an environment for rich interaction, augmenting the traditional use of course repositories. Further, this gave the students hands-on experience with real-time conferencing tools which are increasingly common in the workplace. The paper also discusses experienced challenges related to combining the use of multiple synchronous communication channels and presents implications for further use of real-time conferencing in online …

Molecular Dynamics Simulation Based On Hadoop Mapreduce, Chen He

School of Computing: Dissertations, Theses, and Student Research

Molecular Dynamics (MD) simulation is a computationally intensive application used in multiple fields. It can exploit a distributed environment due to inherent computational parallelism. However, most of the existing implementations focus on performance enhancement. They may not provide fault-tolerance for every time-step.

MapReduce is a framework first proposed by Google for processing huge amounts of data in a distributed environment. The simplicity of the programming model and fault- tolerance for node failure during run-time make it very popular not only for commercial applications but also in scientific computing.

In this thesis, we develop a novel communication-free and each time-step fault- …

Networks - Ii: Em-Wave Consideration Through Polarization And Magnetization Effects In Fiber Optics, Hassan Ali, Zain -Ul- Abiden, M. Rizwan Anjum

International Conference on Information and Communication Technologies

Optical fiber communication is the field of the applied science and a promising technique that permits the communication of data in the form of audio and video signal over transparent medium with high data rate over longer distances. Due to the property of fiber optics that it carries high frequency and allows high bandwidth, as the information travels through fiber optic cable in the form of light which belongs to the spectrum of EM wave. The intensity of the electromagnetic radiation decreases in the non conducting medium due to the scattering and absorption of photons. The research on the behavior …

Networks - Ii: Error Estimation In Angle Of Arrival In Smart Antenna, Sangita Lalchand, Muhammad Mazhar Manzoor, Amir Ijaz, Imran Ahmed Awan, Asad Ali Siddique

International Conference on Information and Communication Technologies

Rapidly growing demand in mobile communication system required technology which will provide minimum errors and maximize SNR in a particular angle/direction. Smart antenna has a system for directed a beam towards desired angle/direction and suppress/cancel interference from undesired angle/direction. MUSIC (Multiple Signal Classification) has capability to estimate number of signals in an array and angle/direction of arrival of desired signal. ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques) is used for the estimation of direction of arrival of multiple sets of identical doublets, provides parallel processing. This Paper provides comparative analysis and simulation of angle of arrival (AOA) estimation, …

Networks - Ii: A Survey Of Data Management Issues & Frameworks For Mobile Ad Hoc Networks, Noman Islam, Zubair A. Shaikh

International Conference on Information and Communication Technologies

Data Management is the execution of a pool of activities on a set of data to conform to the end user data requisitions. MANET is an emerging discipline of computer networks in which a group of roaming hosts spontaneously establishes the network among themselves. The employment of data management in MANET can engender a number of useful applications. However, data management in MANET is a taxing job as it requires deliberation on a number of research issues (e.g. knowledge representation, knowledge discovery, caching, and security etc.). This paper provides a detailed account of the data management problem and its issues, …

Image Processing – I: Pointing And Target Selection Of Object Using Color Detection Algorithm Through Dsp Processor Tms320c6711, Waseem Ahmed, M. Irfan, Mr. Muzammil, Mr. Yaseen

International Conference on Information and Communication Technologies

In the field of robotic and image vision technologies, the embedded computing and optimization of the image processing algorithm is quite significant in order to provide the real time processing. In the current era, for making the real time system for such high extensive computation and processing for providing the high speed and real time standalone system, several industrial giants continuously providing the solutions which are in the form of dedicated DSP processors and generalized FPGAs. Beside such high speed processor implementation, the image processing based algorithm plays significant role in machine vision based solution for industries, robotic and field …

Image Processing – I: Research Design For Evaluation Of Finger Input Properties On Multi-Touch Screen, Ahsan Ullah, Ahmad Kamil B. Mahmood, Suziah Sulaiman, Muzafar Khan

International Conference on Information and Communication Technologies

Interactive tabletop display provides a collaborative workspace to users around a table. Users sit in front of each other and they perform direct and collaborative multi-touch interaction simultaneously. Users access the interactive elements using their bare fingers. The finger works as a pointer device, and it has direct relation with the size, shape, and configuration of the interactive elements on sensitive displays. It is found that there is lack of precise selection of small size interactive elements owing to users' fat fingers. In this regard, it is aimed to propose a research design to evaluate the finger input properties in …

Network Security: Privacy-Preserving Data Publication: A Review On “Updates” In Continuous Data Publication, Adeel Anjum, Guillaume Raschia

International Conference on Information and Communication Technologies

Preserving the privacy of individuals while publishing their relevant data has been an important problem. Most of previous works in privacy preserving data publication focus on one time, static release of datasets. In multiple publications however, where data is published multiple times, these techniques are unable to ensure privacy of the concerned individuals as just joining either of the releases could result in identity disclosure. In this work, we tried to investigate the major findings in the scenario of continuous data publication, in which the data is not only published multiple times but also modified with INSERTS, UPDATES and DELETE …

Image Processing – I: Automated System For Fingerprint Image Enhancement Using Improved Segmentation And Gabor Wavelets, Amna Saeed, Anam Tariq, Usman Jawaid

International Conference on Information and Communication Technologies

This research revolves around the fingerprint image enhancement. It is used for automated fingerprint identification systems (AFIS) for extracting the best quality fingerprint images. Accurate feature extraction and identification is the basic theme of this enhancement. This paper is on the fingerprint image enhancement using wavelets. Wavelets are famous for their special localization property and orientation flow estimation. The proposed technique is basically comprises of three main steps: segmentation followed by image sharpening and then Gabor wavelet filtering. Segmentation distinguishes between image background and foreground which in turn reduces processing time. Our sharpening stage of enhancement algorithm sharpens the edges …

Application Of Ict: Potential Of Cloud Computing Architecture, Saira Begum, Muhammad Khalid Khan

International Conference on Information and Communication Technologies

Cloud computing is a massively central advancement in the technique that businesses and users devour and work on computing. It's a elementary modify to an prepared model in which applications don't subsist out their lives on a specific section of hardware and in which possessions are more supplely deployed than was the historical standard. It's a primary shift to expansion and utilization model that replaces hard-wired, proprietary associations surrounded by software components and the clients of those components with unimportant Web services and Web-based software admittance. As difficulty under the virtualization is how to allocate resources to every application on-demand …

Application Of Ict: Fram Based Tmr (Triple Modular Redundancy) For Fault Tolerance Implementation, Kashif Sagheer Siddiqui, Mirza Altamash Baig

International Conference on Information and Communication Technologies

The main objective of this paper is to design a Triple modular redundancy test bench using FRAM (Ferroelectric RAM) based memory module for main driver of OBDH (On Board Data Handling) system of LEO (Lower Earth Orbit) Satellite that enables the fast detection of error in driver data when implied with FPGA (Field Programmable Gate Array) and provides more realistic and tolerant way of fault finding for Single Event Upset (SEU) in highly radiated space environment. The scope of paper embraces development of TMR test bench, software algorithms, functional simulations, timing simulations and conclusion of comparison of FRAM based memory …

Network Security: A Review Of Salient Security Aspects Of The Universal Mobile Telecommunication System (Umts), F. Imran, M. Hussain

International Conference on Information and Communication Technologies

Wireless communication is known as key to global development. Wireless and mobile communication is gaining more importance in our life. Protecting information is one the aspects which we need to focus on the wireless networks. Universal mobile telecommunication system (UMTS) is evolution of the third generation mobile communication system. It was built on the success of global system for mobile communication (GSM). Universal mobile telecommunication system's security is also built on global system for mobile communication (GSM). The paper reviews the literature of the security aspects of the Universal mobile telecommunication system. A critical evaluation of the proposed solutions is …

Networks - Ii: Modified On Demand Transmission Power Control For Wireless Sensor Networks, Mirza M Yasir Masood, Ghufran Ahmed, Noor M. Khan

International Conference on Information and Communication Technologies

On Demand Transmission Power Control (ODTPC) is a well known transmission power control strategy that is used to reduce high power consumption in wireless sensor networks (WSNs). In this paper, we propose an extension to ODTPC and thus, a modified version of ODTPC is proposed named MODTPC. Simulation results show that performance of MODTPC is better than ODTPC in terms of efficiency and energy saving.

Application Of Ict: Ascertaining Knowledge Flows Through Labor Mobility In The Ict Sector Of Pakistan, Abdul Baseer Qazi

International Conference on Information and Communication Technologies

This paper attempts to fill the gap in literature on channels of spillovers with a particular focus to the ICT sector and developing countries. With the help of a custom-made survey we have constructed variables which help to identify and measure the most prominent channels of spillovers suggested in literature. Our results corroborate labor mobility as one of the most important channel for inter-firm knowledge flows.

Network Security: A Secure Architecture For Open Source Voip Solutions, Fahad Sattar, M. Hussain, Kashif Nisar

International Conference on Information and Communication Technologies

Voice over IP “VoIP” is a form of voice speech that uses data networks, for transmission of voice traffic over IP-based networks to transmit voice signals. The signal is correctly encoded at one end of the communication channel, sent as packets through the data network, then decoded at the receiving end and transformed back into a voice signal. It has a potential and offering a choice to the traditional telephony systems due to its high resource utilization and cost efficiency. Meanwhile, Wireless Local Area Networks (WLANs) have become an ever present networking technology that has been deployed around the world. …

Real-Time Divisible Load Scheduling For Cluster Computing, Anwar Mamat

School of Computing: Dissertations, Theses, and Student Research

Cluster computing has become an important paradigm for solving large-scale problems. However, as the size of a cluster increases, so does the complexity of resource management and maintenance. Therefore, automated performance control and re- source management are expected to play critical roles in sustaining the evolution of cluster computing. The current cluster scheduling practice is similar in sophistication to early supercomputer batch scheduling algorithms, and no consideration is given to desired quality-of-service (QoS) attributes. To fully avail the power of computational clusters, new scheduling algorithms that provides high performance, QoS assurance, fault-tolerance, energy savings and streamlined management of the cluster …

Networks - I: Computational Intelligence Based Optimization In Wireless Sensor Network, Rabia Iram, Muhammad Irfan Sheikh, Sohail Jabbar, Abid Ali Minhas

International Conference on Information and Communication Technologies

There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle and so the technology advancement which proved to be a miracle of the miracles. Wireless Sensor Network (WSN) is one such miracle of the wireless technology which opens up the new dimensions for the researchers to write the technology of the future i.e. ubiquitous computing and intelligence. Nevertheless nature has played its ultimate role as well to give an idea of perfection in optimizing the teething issues in any field and so in WSN. …

Networks - I: A Dynamic Transmission Power Control Routing Protocol To Avoid Network Partitioning In Wireless Sensor Networks, Ghufran Ahmed, Noor M. Khan, Mirza M Yasir Masood

International Conference on Information and Communication Technologies

Power utilization in an efficient manner is a hot research issue in wireless sensor networks (WSNs). WSNs consist of energy hungry sensor nodes. Researchers have been trying to increase the lifetime of WSN since the development of WSN technology. Dynamic Transmission Power Control (DTPC) is a method for an efficient utilization of the energy resource and thus leads to an increase in lifetime. It has been used for the determination of minimum transmission power. A valuable study about the impact of variable transmission power on link quality has already been present in literature. In contrast to DTPC, transmitting data at …

Artificial Intelligence - I: Design, Low Cost Implementation And Comparison Of Mimo Mamdani Fuzzy Logic Controllers For Wall Tracking Behavior Of Mobile Robot, Umar Farooq, K. M. Hasan, Ghulam Abbas, Muhammad Usman Asad, Syed Omer Saleh

International Conference on Information and Communication Technologies

This paper describes the design, implementation and comparison of two Mamdani Fuzzy Logic Controllers for wall tracking behavior of mobile robot. Both the controllers take inputs from two ultrasonic sensors and generate motion commands for left and right motors. The controllers are designed using MATLAB and implemented in real time using an inexpensive and readily available microcontroller, AT89C52. The controllers differ in membership functions and the rule base which provides a mean for their comparison. Experimental results have validated both the controllers; however they exhibit different settling time and percentage overshoot due to the difference in the membership functions and …

Networks - I: A Comparative Analysis Of Energy-Aware Routing Protocols In Wireless Sensor Networks, Mohsin Raza, Ghufran Ahmed, Noor M. Khan, M Awais, Qasim Badar

International Conference on Information and Communication Technologies

This paper presents the implementation of two routing protocols for Wireless Sensor Networks (WSNs): GRACE (GRAdient Cost Establishment for Energy Aware routing) and GRAB (GRAdient Broadcasting) along with their comparative analysis using Sun SPOT sensor nodes, developed by Sun Microsystems. The performance of both the routing protocols is evaluated on the basis of various performance metrics including network lifetime, throughput and network energy etc. However in papers where these routing protocols presented, practical limitations of wireless sensor nodes were ignored. The communication of sensor nodes is established using multiple communication channels for proper implementation of both the routing protocols, GRACE …

Artificial Intelligence - I: Adaptive Automated Teller Machines - Part Ii, Ghulam Mujtaba, Tariq Mahmood

International Conference on Information and Communication Technologies

Nowadays, the banking sector is increasingly relying on Automated Teller Machines (ATMs) in order to provide services to its customers. Although thousands of ATMs exist across many banks and different locations, the GUI and content of a typical ATM interface remains, more or less, the same. For instance, any ATM provides typical options for withdrawal, electronic funds transfer, viewing of mini-statements etc. However, such a static interface might not be suitable for all ATM customers, e.g., some users might not prefer to view all the options when they access the ATM, or to view specific withdrawal amounts less than, say, …

Networks - I: Interference Mitigation In 4g System Using Smart Antenna, Asad Ali Siddiqui, Muhammad Mazhar Manzoor, Aamir Ijaz, Adnan Umar Khan, Imran Ahmed Awan, Sangita Lal Chand

International Conference on Information and Communication Technologies

Emerging trends of mobile communication and ever growing demand of mobile users with high speed data requirements and migrating towards 4G, Co-Channel interference and multipath in urban/dense urban environment will limit the capacity of the network. Smart antenna is now recognized by its higher user capacity in 4G wireless networks by efficiently reducing multipath and co-channel interference. Smart Antenna use adaptive beam forming algorithms in a dynamic environment continuously adjusting the weight of antenna arrays for creating a beam to track desired users automatically, and minimize interference from other users by placing nulls in their directions. This research work provides …

Artificial Intelligence – I: Adaptive Automated Teller Machines — Part I, Ghulam Mujtaba, Tariq Mahmood

International Conference on Information and Communication Technologies

During the past few years, the banking sector has started providing a variety of services to its customers. One of the most significant of such services has been the introduction of the Automated Teller Machines (ATMs) for providing online support to bank customers. The use of ATMs has reached its zenith in every developed country, and thousands of ATM transactions are occurring on a daily basis. In order to increase the customers' satisfaction and to provide them with more user-friendly ATM interfaces, it becomes important to mine the ATM transactions to discover useful patterns about the customers' interacting behaviors. In …

Artificial Intelligence – I: Usability Studies In Haptic Systems, Muzafar Khan, Suziah Sulaiman, Abas M. Said, Muhammad Tahir

International Conference on Information and Communication Technologies

Haptic systems that deal with force and tactile feedback are widely used in different domains. Usability evaluation plays an important role to assess these systems and user's experience. Many usability evaluation studies for haptic systems have been reported but no effort is made to effectively summarize those works; thus, little is known on the extent in which the methods applied are useful for these systems. Literature survey is performed to find out the patterns related to different evaluation methods and haptic devices used in various domains. The survey findings indicate for a need of new usability methods that would be …

Artificial Intelligence – I: A Preliminary Framework For Human-Agent Communication In Electronic Negotiations, Moez Ur Rehman, Nosheen Riaz

International Conference on Information and Communication Technologies

Electronic negotiations are business negotiations conducted via electronic means using information and communications technologies (ICT). Two dominant types of electronic negotiation systems are automated negotiation systems for software agents and negotiation support systems (NSSs) for humans. However, the integration of two types for human-agent negotiations is an important task. In this paper, an extended communication model for human-agent business negotiations is presented. For this purpose, the underlying communication models of automated negotiations and NSSs are analyzed. The extended communication model is based on a common negotiation ontology which captures the negotiation agenda and paves the way for such hybrid communication, …

Computer Security Policy: Preventing Vulnerabilities And The Impact Of Selective Enforcement On An Organization, Latrice D. Parker-Stewart

Regis University Student Publications (comprehensive collection)

This project focuses on the importance of a computer security policy as a whole. It also looks at how security policies assist in preventing vulnerabilities that may be instigated by employees. Moreover, the project views how the concept of selective enforcement can affect and impact an organization. This project delves into actual cases of employee misconduct in various organizations. It explains how policies were violated and the repercussions of these various misdeeds. Finally the project discusses different items that a good security policy should have and how important it is for policies to be enforced. It is vital that an …

Modeling Wireless Networks For Rate Control, David C. Ripplinger

Theses and Dissertations

Congestion control algorithms for wireless networks are often designed based on a model of the wireless network and its corresponding network utility maximization (NUM) problem. The NUM problem is important to researchers and industry because the wireless medium is a scarce resource, and currently operating protocols such as 802.11 often result in extremely unfair allocation of data rates. The NUM approach offers a systematic framework to build rate control protocols that guarantee fair, optimal rates. However, classical models used with the NUM approach do not incorporate partial carrier sensing and interference, which can lead to significantly suboptimal performance when actually …