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Informacion Ambiental y Ecologica Sobre los Llanos del Rio Orinoco: Proyecto Orinoco-Apure: Secciones 1 y 2 (open access)

Informacion Ambiental y Ecologica Sobre los Llanos del Rio Orinoco: Proyecto Orinoco-Apure: Secciones 1 y 2

This report includes sections one and two of a study of the Llanos del Rio Orinoco. The aim of this study is to establish relationships between the characteristics of plant communities of the Central Plains of Venezuela and geomorfogenetica and pedogenic evolution during the Quaternary.
Date: June 1985
Creator: Acevedo, Miguel F.; Silva, Juan F. & Raventós, José
Object Type: Report
System: The UNT Digital Library
Proyecto Orinoco - Apure: Informacion ambiental y ecologica sobre los llanos del rio Orinoco. Seccion 3 (open access)

Proyecto Orinoco - Apure: Informacion ambiental y ecologica sobre los llanos del rio Orinoco. Seccion 3

Report for the Project Orinoco - Apure. This report discusses environmental and ecological information on the plains of the Orinoco river.
Date: June 1985
Creator: Acevedo, Miguel F.; Silva, Juan F. & Raventós, José
Object Type: Report
System: The UNT Digital Library
Venezuela Mini-Workshops Reports: Caracas and Merida, May 1989: National Problems Caused by Global Climate Change (open access)

Venezuela Mini-Workshops Reports: Caracas and Merida, May 1989: National Problems Caused by Global Climate Change

Reports on Venezuela mini-workshops held in Caracas and Mérida in May 1989 on national problems caused by global climate change.
Date: May 1989
Creator: Acevedo, Miguel F.; Tonella, Giorgio & Jaimez, Ramón E.
Object Type: Report
System: The UNT Digital Library
Scalable, top-down optical lithography for electrically contacting monolayer crystallites of vapor grown WSe2 for gas sensing applications (open access)

Scalable, top-down optical lithography for electrically contacting monolayer crystallites of vapor grown WSe2 for gas sensing applications

Article discusses how semiconducting two-dimensional transition-metal dichalcogenides (TMDs) have garnered a great deal of interest owing to their large surface-to-volume ratios compared to traditional three-dimensional (3D) semiconductors, and focuses on a specific TMD; tungsten diselenide (WSeâ‚‚). In their study, the authors demonstrate the halide-assisted low-pressure chemical vapor deposition (HA-LPCVD) of high crystalline-quality, monolayer WSeâ‚‚.
Date: October 3, 2022
Creator: Ademaj, Ideal; Mather, Thomas; Jayanand, Kishan & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
Advancing Reverse Electrowetting-on-Dielectric from Planar to Rough Surface Electrodes for High Power Density Energy Harvesting (open access)

Advancing Reverse Electrowetting-on-Dielectric from Planar to Rough Surface Electrodes for High Power Density Energy Harvesting

Article presenting electrical and multiphysics-based modeling approaches of REWOD energy harvester using structured rough surface electrodes. By enhancing the overall available surface area, an increase in the overall capacitance is achieved.
Date: December 15, 2021
Creator: Adhikari, Pashupati R.; Patwary, Adnan B.; Kakaraparty, Karthik; Gunti, Avinash; Reid, Russell C. & Mahbub, Ifana
Object Type: Article
System: The UNT Digital Library
High power density and bias-free reverse electrowetting energy harvesting using surface area enhanced porous electrodes (open access)

High power density and bias-free reverse electrowetting energy harvesting using surface area enhanced porous electrodes

Article presents a novel approach for enhancing power output from a REWOD energy harvester by significantly increasing the total available surface area using perforated silicon wafer electrodes.
Date: November 6, 2021
Creator: Adhikari, Pashupati R.; Reid, Russell C. & Mahbub, Ifana
Object Type: Article
System: The UNT Digital Library
Electrode and electrolyte configurations for low frequency motion energy harvesting based on reverse electrowetting (open access)

Electrode and electrolyte configurations for low frequency motion energy harvesting based on reverse electrowetting

This article explores various combinations of electrolyte concentrations, dielectrics, and dielectric thicknesses to generate maximum output power employing REWOD energy harvester with the objective of implementing a fully self-powered wearable sensor.
Date: March 3, 2021
Creator: Adhikari, Pashupati R.; Tasneem, Nishat Tarannum; Reid, Russell C. & Mahbub, Ifana
Object Type: Article
System: The UNT Digital Library
Role of Cu addition in enhancing strength-ductility synergy in transforming high entropy alloy (open access)

Role of Cu addition in enhancing strength-ductility synergy in transforming high entropy alloy

Article investigates the strength-ductility synergy of high-entropy alloys (HEAs).
Date: March 1, 2022
Creator: Agrawal, Priyanka; Gupta, Sanya; Shukla, Shivakant; Nene, Saurabh S.; Thapliyal, Saket; Toll, Michael P. et al.
Object Type: Article
System: The UNT Digital Library
Comparison of Thermal Effectiveness and Crevice Corrosion Risk of Fin Geometry on All-Aluminum Microchannel Heat Exchangers (open access)

Comparison of Thermal Effectiveness and Crevice Corrosion Risk of Fin Geometry on All-Aluminum Microchannel Heat Exchangers

Article all-aluminum microchannel heat exchangers have recently gained popularity in the heating, ventilation, and air conditioning industry. Despite their attractive thermal performance design, these heat exchangers make coils used in automotive, commercial, and residential applications prone to crevice corrosion. This study uses high-fidelity conjugate heat transfer simulations to model a micro channel heat exchanger system that includes fins and tubes with crossflow to compare their thermal effectiveness to gain insight into potential crevice corrosion of the MCHE alloy.
Date: June 12, 2023
Creator: Ahmed, Hossain; Nasrazadani, Seifollah & Sadat, Hamid
Object Type: Article
System: The UNT Digital Library
High-Fidelity Conjugate Heat Transfer Simulation of Micro-Channel Heat Exchanger (open access)

High-Fidelity Conjugate Heat Transfer Simulation of Micro-Channel Heat Exchanger

Article describes how high-fidelity conjugate heat transfer simulations are used to model a micro-channel heat exchanger (MCHE) in a crossflow to study its thermal-hydraulic performance. Three different microchannel geometries, namely circular, triangular, and square with louver-shaped fins, are considered.
Date: July 1, 2023
Creator: Ahmed, Hossain; Sadat, Hamid & Nasrazadani, Seifollah
Object Type: Article
System: The UNT Digital Library
Amazon Mechanical Turk for Subjectivity Word Sense Disambiguation (open access)

Amazon Mechanical Turk for Subjectivity Word Sense Disambiguation

In this paper, the authors discuss research on whether they can use Mechanical Turk (MTurk) to acquire good annotations with respect to gold-standard data, whether they can filter out low-quality workers (spammers), and whether there is a learning effect associated with repeatedly completing the same kind of task.
Date: June 2010
Creator: Akkaya, Cem; Conrad, Alexander; Wiebe, Janyce M. & Mihalcea, Rada, 1974-
Object Type: Paper
System: The UNT Digital Library
Subjectivity Word Sense Disambiguation (open access)

Subjectivity Word Sense Disambiguation

This paper investigates a new task, subjectivity word sense disambiguation (SWSD), which is to automatically determine which word instances in a corpus are being used with subjective senses, and which are being used with objective senses.
Date: August 2009
Creator: Akkaya, Cem; Wiebe, Janyce M. & Mihalcea, Rada, 1974-
Object Type: Paper
System: The UNT Digital Library

CCAP: A Strategic Tool for Managing Capacity of CDMA Networks

This presentation discusses CCAP, a strategic tool for managing capacity of CDMA networks. CCAP is a graphical interactive tool for CDMA that calculates the coverage area, call capacity of a CDMA network, and subscriber network performance to optimize capacity.
Date: 1998
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library

CDMA Network Design

This presentation gives an overview of code-division multiple access (CDMA) and inter-cell effects, network capacities, sensitivity analysis of base station locations, pilot-signal power, and transmission power of the mobiles, and concludes with numerical results.
Date: May 2002
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library

Cell Design to Maximize Capacity in CDMA Networks

This presentation discusses the code division multiple access (CDMA) inter-cell effects, capacity regions, maximizing network capacity, mobility, a call admission control algorithm, and network performance.
Date: April 2002
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library

Current Research in Wireless at UNT

This presentation discusses wireless networks, access point selections, traffic balancing, multi-cell CDMA, user distribution modeling, and call admission control.
Date: October 2004
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library

Energy-Aware Routing and Hybrid Synchronization in Sensor Networks

This presentation discusses the research of sensor synchronization, sensor grid routing, and voice over internet protocol (VoIP).
Date: September 2007
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library

Research, Teaching, and Outreach

This presentation discusses research in sensor network routing, WiFi network optimization, 3G cellular call admission, and the outreach and resources needed.
Date: December 9, 2005
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library

Subscriber Maximization in CDMA Cellular Networks

This presentation gives an overview of code division multiple access (CDMA), traffic and mobility models, subscriber optimization formulation, and numerical results.
Date: August 2004
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library
Subscriber Maximization in CDMA Cellular Networks (open access)

Subscriber Maximization in CDMA Cellular Networks

This paper discusses subscriber maximization in CDMA cellular networks.
Date: August 2004
Creator: Akl, Robert G.
Object Type: Paper
System: The UNT Digital Library

WiFi and WCDMA Network Design

This presentation discusses WiFi access point selection and traffic balancing, multi-cell wideband code division multiple access (WCDMA) with multiple classes, user modeling using 2D Gaussian distribution, and intra-cell and inter-cell interference and capacity.
Date: April 2005
Creator: Akl, Robert G.
Object Type: Presentation
System: The UNT Digital Library
Dynamic Channel Assignment in IEEE 802.11 Networks (open access)

Dynamic Channel Assignment in IEEE 802.11 Networks

This paper discusses dynamic channel assignment in IEEE 802.11 networks.
Date: March 2007
Creator: Akl, Robert G. & Arepally, Anurag
Object Type: Paper
System: The UNT Digital Library
Simulation of Throughput in UMTS Networks with Different Spreading Factors (open access)

Simulation of Throughput in UMTS Networks with Different Spreading Factors

In this paper, the authors design and implement a local session admission control (SAC) algorithm for third-generation wireless networks which allows for the simulation of network throughput for different spreading factors and various mobility scenarios.
Date: September 2006
Creator: Akl, Robert G. & Arepally, Anurag
Object Type: Paper
System: The UNT Digital Library

Retention and Recruitment of Women in Computer Engineering

This presentation discusses strategies and goals for recruiting more women to Computer Science and Engineering degree (CSE) programs at the University of North Texas (UNT). It also describes a series of activities aimed at improving retention rates of women students already in our programs. Such recruitment and retention of women is critical to the country's efforts to increase the number of engineering professionals, and is a priority for the CSE Department at UNT.
Date: July 2006
Creator: Akl, Robert G. & Garlick, Ryan
Object Type: Presentation
System: The UNT Digital Library