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Add Value To Your Website, Julianne Miranda
Add Value To Your Website, Julianne Miranda
Center for Academic Technology (CAT) - Scholarship and Professional Work
The article focuses on developing a Web site. It mentions that multimedia can be useful for teaching and reinforcement of concepts introduced in the classroom or lesson. The Multimedia Educational Resource for Learning and Online Teaching has a collection of reviewed teaching and learning resources that clearly demonstrates effective use of multimedia for teaching purposes. As multimedia materials have become more standard, many Wen authors are turning to interactive technologies including blogs and podcasts to create a more dynamic online presence for their visitors. A blog is series of online journal entries to which others may be allowed to respond …
Effect Of Operator Control Configuration On Unmanned Aerial System Trainability, John Neumann
Effect Of Operator Control Configuration On Unmanned Aerial System Trainability, John Neumann
Electronic Theses and Dissertations
Unmanned aerial systems (UAS) carry no pilot on board, yet they still require live operators to handle critical functions such as mission planning and execution. Humans also interpret the sensor information provided by these platforms. This applies to all classes of unmanned aerial vehicles (UAV's), including the smaller portable systems used for gathering real-time reconnaissance during military operations in urban terrain. The need to quickly and reliably train soldiers to control small UAS operations demands that the human-system interface be intuitive and easy to master. In this study, participants completed a series of tests of spatial ability and were then …
Numerical Analysis Of Oxygen Transport In Liquid Lead Bismuth Eutectic Systems, Xianfang Tan
Numerical Analysis Of Oxygen Transport In Liquid Lead Bismuth Eutectic Systems, Xianfang Tan
UNLV Retrospective Theses & Dissertations
Active oxygen control technique is a recently developed effective method for mitigating structural corrosions in liquid lead bismuth eutectic (LBE) systems. By carefully increasing the concentration of oxygen in liquid LBE, an iron and chrome based oxide film can be formed on the surfaces of the structural steels and thus successfully prevent the direct dissolution of the steel elements into the liquid alloy; The proper formation of oxide layers critically depends on the control of the oxygen concentration, so it is necessary to monitor the on-line concentration in LBE systems. The Yttria-Stabilized Zirconia (YSZ) oxygen sensor has been designed by …
Color Detection And Three-Dimensional Reconstruction For Hand Pose Estimation As Part Of An Hci System, Maria Beatriz Teruel
Color Detection And Three-Dimensional Reconstruction For Hand Pose Estimation As Part Of An Hci System, Maria Beatriz Teruel
UNLV Retrospective Theses & Dissertations
The main focus of this thesis is to give a detailed description of techniques and methodology implemented for feature extraction and three-dimensional reconstruction. The algorithms were developed as part of a project whose main object is the graphical three-dimensional modeling of the gestures of a human hand. The project itself comprises several steps, namely, camera calibration, hand feature extraction, three-dimensional reconstruction, and computer graphics modeling of the hand. Experimental results of the feature extraction and three-dimensional reconstruction will also be presented.
Security Protocol Based On Random Key Generation For An Rfid System, Karthik Raghavan
Security Protocol Based On Random Key Generation For An Rfid System, Karthik Raghavan
UNLV Retrospective Theses & Dissertations
Radio Frequency Identification (RFID) is a technology, which describes the transmission of unique information by a wireless device, over Radio waves, when prompted or read by a compatible reader; The basic components in implementing RFID are RFID tags which are small microchips attached to a radio antenna, mounted on a substrate, and a wireless transceiver/reader that queries the RFID tags; This thesis deals with research issues related to security aspects in the communication between an RFID tag and its reader. More precisely, it deals with a new, simple and efficient security protocol based on an encryption that uses the concept …
Application Of Computational Fluid Dynamics For High Energy Efficiency Design With Human Comfort Of Cad-Vav And Ufad Systems, Bhanu Rekha Bandhakavi
Application Of Computational Fluid Dynamics For High Energy Efficiency Design With Human Comfort Of Cad-Vav And Ufad Systems, Bhanu Rekha Bandhakavi
UNLV Retrospective Theses & Dissertations
This thesis deals with the numerical simulation of the ceiling air distribution (CAD) system and the Under Floor Air Distribution (UFAD) system based on the dimensions of BTLab at UNLV. Ceiling Air Distribution (CAD) with variable air volume (VAV) and Under Floor Air Distribution (UFAD) systems have been widely used in different countries. CAD-VAV and UFAD systems designs have been influenced by increasing emphasis on indoor air quality (IAQ), energy conservation, environmental effects, safety, and economics. So, 3-D Computational Fluid Dynamics (CFD) analysis technique was applied to design high energy efficiency and human comfort CAD-VAV and UFAD systems. The goal …
Harmonic Impact Of Photovoltaic Inverters On Low Voltage Distribution Systems, Ahmed Latheef, D A. Robinson, Victor J. Gosbell, Victor W. Smith
Harmonic Impact Of Photovoltaic Inverters On Low Voltage Distribution Systems, Ahmed Latheef, D A. Robinson, Victor J. Gosbell, Victor W. Smith
Faculty of Informatics - Papers (Archive)
The number of installations of photovoltaic solar panels and associated inverter systems within residential premises is increasing. As these systems incorporate a power electronics front end, they will have an influence on the quality of supply in regards to voltage harmonics. This paper investigates the harmonic impact on an LV distribution feeder due to the installation of residential type grid connected photovoltaic inverter systems. To undertake the study an aggregated current source model is proposed for the photovoltaic inverter systems based on measurement data from available literature and the relevant international standards. A typical LV distribution feeder including load arrangements …
An Ontology-Based Approach For Expert And Knowledge Mining In Complex Multi-Agent Systems, Minjie Zhang, Xijin Tang, Quan Bai, Jifa Gu
An Ontology-Based Approach For Expert And Knowledge Mining In Complex Multi-Agent Systems, Minjie Zhang, Xijin Tang, Quan Bai, Jifa Gu
Faculty of Informatics - Papers (Archive)
Complex problems require diverse expertise and multiple techniques to solve. In order to solve such problems, complex multi-agent systems include numbers of heterogeneous agents, which may include both of human experts and autonomous agents, to work together toward some complex problems. Most complex multi-agent systems are working in open domains. Due to heterogeneities and dynamic working environments, expertise and capabilities of agents might not be well estimated and presented in the system. Therefore, how to discover useful knowledge from human and autonomous experts, make more accurate estimation for experts' capabilities and to find out suitable expert(s) to solve incoming problems …
Mindful It Adoption: Making The Right Strategic Decisions By Knowing Why And How To Adopt Enterprise Systems?, Valerie A. Baker, Tim Coltman
Mindful It Adoption: Making The Right Strategic Decisions By Knowing Why And How To Adopt Enterprise Systems?, Valerie A. Baker, Tim Coltman
Faculty of Informatics - Papers (Archive)
Corporate investment in enterprise level IT systems has been characterised by high rates of failure. The paper presents a knowledge based perspective to examine how firms adopt and implement enterprise systems in order to better understand how organisations can achieve reliable outcomes from such investments. The case presented explores the key decision stages of a major ERP investment, focusing on the strategic reasoning behind each decision. Particular attention is directed to the relationship between adoption know-why and implementation know-how to assess whether managers have been mindful or mindless in their investment decisions.
Scarcely Populated Uwb-Ir Systems With Interleaved Coding-Modulation On Multipath Fading Channels, Michal M. Pietrzyk, Keni Popovski, Tadeusz A. Wysocki, Beata J. Wysocki, Jos H. Weber
Scarcely Populated Uwb-Ir Systems With Interleaved Coding-Modulation On Multipath Fading Channels, Michal M. Pietrzyk, Keni Popovski, Tadeusz A. Wysocki, Beata J. Wysocki, Jos H. Weber
Faculty of Informatics - Papers (Archive)
Interleaved coding-modulation (ICM) is a recently proposed method for ultra-wideband impulse radio (UWB-IR) systems. ICM exploits the concept of chip interleaving, allowing to alleviate the problem of inter-symbol and inter-pulse interference commonly present in high data rate UWB-IR systems. In this paper, previous work on ICM is extended to scarcely populated multi-user scenarios. A novel design of a deterministic chip interleaver based on time-hopping hyperbolic congruence sequences is proposed. Furthermore, the main parameters of the random and hyperbolic interleavers are reviewed. The obtained results indicate that the proposed type of interleaver yields similar performance to random interleavers but with the …
N-Gens Of Change: Personal Response Systems And Net-Generation Students, Brian Murphy, Ciorstan J. Smark
N-Gens Of Change: Personal Response Systems And Net-Generation Students, Brian Murphy, Ciorstan J. Smark
Faculty of Commerce - Papers (Archive)
Personal Response Systems are a technology similar to use to a television remote control or a mobile telephone for sending SMS messages. They enable almost instant communication between student and instructor in lecture situations. This paper examines the claims made by Personal Response Systems and considers whether they may be especially appropriate to the preferences and expectations of Net- Generation students. The Net-Generation (also known as N-Gens) is made up of students born between 1981 and 2001. They now make up the bulk of finance students in universities across our region. But have we really adapted our lecturing styles to …
Robust Motion Tracking Control Of Piezoelectric Actuation Systems, Hwee Choo Liaw, Denny Oetomo, Bijan Shirinzadeh, Gursel Alici
Robust Motion Tracking Control Of Piezoelectric Actuation Systems, Hwee Choo Liaw, Denny Oetomo, Bijan Shirinzadeh, Gursel Alici
Faculty of Engineering - Papers (Archive)
This paper proposes a robust control methodology for piezoelectric actuation systems to track specified motion trajectories. This is motivated by the search for an effective control strategy to deal with the problem of nonlinear behaviour in the piezoelectric actuation systems. The basic concept associated with this approach lies in the specification of a target performance and the formulation of a robust control scheme for the system to ensure the convergence of the position tracking error to zero in the presence of parametric uncertainties and hysteresis effect inclusive of other un-modelled disturbances. Stability of the control system is proven theoretically and …
Control Strategy Of Distributed Generation For Voltage Support In Distribution Systems, An D. T Le, Kashem M. Muttaqi, Michael Negnevitsky, Gerard Ledwich
Control Strategy Of Distributed Generation For Voltage Support In Distribution Systems, An D. T Le, Kashem M. Muttaqi, Michael Negnevitsky, Gerard Ledwich
Faculty of Engineering and Information Sciences - Papers: Part A
Voltage problem is always a critical issue in operating a distribution system. The uncertainties of load distribution and variation have introduced a great complexity to the task of maintaining system voltage within the permitted range. In this paper, small-scale generator, known as distributed generation (DG), is employed in the system and acting as a voltage regulator. The output of DG is controlled in such a way that acceptable level of electrical supply quality is achieved with a reasonable operating cost. The DG controller is tested with a non-uniformly varying load on the time domain basis. Simulations have been conducted with …
Experience In The Application Of Iec/Tr 61000-3-6 To Harmonic Allocation In Transmission Systems, T J. Browne, V J. Gosbell, S Perera, D A. Robinson, L M. Falla, P J. Windle, A C. D Perera
Experience In The Application Of Iec/Tr 61000-3-6 To Harmonic Allocation In Transmission Systems, T J. Browne, V J. Gosbell, S Perera, D A. Robinson, L M. Falla, P J. Windle, A C. D Perera
Faculty of Engineering and Information Sciences - Papers: Part A
Technical report IEC/TR 61000-3-6 is widely used as a guide to harmonic management in HV and MV networks, assisting in coordination of harmonic levels between utility and customer. In 2001, Australia and New Zealand adopted the harmonic standard AS/NZS 61000.3.6, which closely follows the above IEC technical report. As a result, transmission utilities and connected loads are required by government regulations to abide by the harmonic allocations set by the standard. The technical report contains some useful general principles which can be applied to the harmonic management of power systems. However, unexpected difficulties can be found when attempts are made …
Systems Approach For Estimating Field Moisture Content, Thomas M. Petry, Yuh-Puu Han, David Newton Richardson
Systems Approach For Estimating Field Moisture Content, Thomas M. Petry, Yuh-Puu Han, David Newton Richardson
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This paper describes a software tool developed for estimation of the field moisture content of subgrade materials. Subgrade behavior is directly related to its moisture content. Unfortunately, some approaches of estimating field moisture content are too complex to be used in routine design. In this paper, the authors attempt to provide an approach that is easy to use. The software presented here was developed using expert system approaches. It is capable of analyzing data entered by the users, and providing estimations to meet different scenarios. The information entered by the user is first examined for its reasonableness and accuracy. Then, …
Development Of A Risk Assessment Model For Global Information Technology Outsourcing, June Wei, Brian Peach
Development Of A Risk Assessment Model For Global Information Technology Outsourcing, June Wei, Brian Peach
Journal of International Technology and Information Management
Global Information Technology (IT) outsourcing has been recognized to have important potential benefits. However, researchers and practitioners also recognize potential risks involved in global IT outsourcing, which sometimes lead to undesirable consequences. This paper develops a model to assess risks in global IT outsourcing. Specifically, this paper begins by identifying global IT outsourcing risk factors by considering the national infrastructure, organizational infrastructure, and project environment. Second, a Global IT Outsourcing (GITO) engagement model for risk assessment is developed to logically link all these risk factors together. Third, one quantifiable approach based on a relative-weighted assessment model is presented to demonstrate …
The Role Of Convergence In Information Systems And Business Planning, Sharath Sasidharan, Jiming Wu, Dennis Pearce, Grover S. Kearns, Albert L. Lederer
The Role Of Convergence In Information Systems And Business Planning, Sharath Sasidharan, Jiming Wu, Dennis Pearce, Grover S. Kearns, Albert L. Lederer
Journal of International Technology and Information Management
A key challenge to top management is the alignment of IS and business plans for the purpose of producing an IT-based competitive advantage. This study uses a well known communication theory to provide new insight into the impact of CEO and CIO planning participation on IS and business alignment via the convergence of views between the CEO and CIO regarding the current and future strategic impact of IT on the firm’s success. One hundred and nine matched pairs of questionnaire responses from CIOs and CEOs were collected using a postal survey. Results indicated that CIO participation in business planning predicted …
Distributed Generation For Minimization Of Power Losses In Distribution Systems, Kashem M. Muttaqi, An D. T Le, Michael Negnevitsky, Gerard Ledwich
Distributed Generation For Minimization Of Power Losses In Distribution Systems, Kashem M. Muttaqi, An D. T Le, Michael Negnevitsky, Gerard Ledwich
Faculty of Engineering and Information Sciences - Papers: Part A
Appropriate size and location of distributed generation (DG) play a significant role in minimizing power losses in distribution systems. This paper represents techniques to minimize power losses in a distribution feeder by optimizing DG model in terms of size, location and operating point of DG. Sensitivity analysis for power losses in terms of DG size and DG operating point has been performed. The proposed sensitivity indices can indicate the changes in power losses with respect to DG current injection. The proposed techniques have been developed with considering load characteristics and representing loads with constant impedance and constant current models, separately. …
Experimental Evaluation Of Adaptive And Variable Structure Control Of Piezoelectric Actuation Systems For Micro/Nano Manipulation, Hwee Choo Liaw, Bijan Shirinzadeh, Denny Oetomo, Gursel Alici
Experimental Evaluation Of Adaptive And Variable Structure Control Of Piezoelectric Actuation Systems For Micro/Nano Manipulation, Hwee Choo Liaw, Bijan Shirinzadeh, Denny Oetomo, Gursel Alici
Faculty of Engineering - Papers (Archive)
This paper proposes and evaluates an adaptive technique and a variable structure control approach for piezoelectric actuation systems to track specified motion trajectories. The proposed control methodologies are formulated to accommodate unknown or uncertain system parameters, nonlinearities including the hysteresis effect, and external disturbances in the piezoelectric actuation systems without any form of feed-forward compensation. In this study, both control methodologies are demonstrated to possess a promising motion tracking ability experimentally. In comparison, the variable structure control approach is evaluated to be superior to the adaptive technique in the motion tracking control. With the ability to track motion trajectories under …
Shape-Persistent V-Shaped Mesogens-Formation Of Nematic Phases With Biaxial Order, Matthias Lehmann, Shin-Woong Kang, Christiane Köhn, Sönke Haseloh, Ute Kolb, Dieter Schollmeyer, Qingbing Wang, Satyendra Kumar
Shape-Persistent V-Shaped Mesogens-Formation Of Nematic Phases With Biaxial Order, Matthias Lehmann, Shin-Woong Kang, Christiane Köhn, Sönke Haseloh, Ute Kolb, Dieter Schollmeyer, Qingbing Wang, Satyendra Kumar
Satyendra Kumar
A homologous series of shape-persistent V-shaped molecules has been designed to form the biaxial nematic phase. Phenyleneethynylene moieties are attached to a bent fluorenone unit to create an apex angle of about 90°, which is determined from the single crystal structure. Two mesogens, one symmetric and another unsymmetric, have been synthesized by attaching a cyano group to one or both of the peripheral phenyl units, respectively. These groups introduce local dipoles essential for the formation of the nematic phases. The tendency to form a crystalline phase is reduced by laterally substituted hexyloxy chains which allow the nematic phase to be …