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Simulación de la dinámica de grupos de especies vegetales en un bosque de los Llanos occidentales Venezolanos (open access)

Simulación de la dinámica de grupos de especies vegetales en un bosque de los Llanos occidentales Venezolanos

Article discussing the simulation of plant species groups dynamics in a Venezuelan western plains forest.
Date: January 1997
Creator: Angulo, Hirma Ramírez; Torres-Lezama, Armando & Acevedo, Miguel F.
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
Cache-Aided General Linear Function Retrieval (open access)

Cache-Aided General Linear Function Retrieval

This article designs a novel coded caching scheme that outperforms uncoded caching schemes that either use unicast transmissions or let each user recover all files in the library. It extends the scope of the authors’ past work that only considered the class of linear functions that operate element-wise over the files.
Date: December 26, 2020
Creator: Wan, Kai; Sun, Hua; Ji, Mingyue; Tuninetti, Daniela & Caire, Giuseppe
Object Type: Article
System: The UNT Digital Library
Interdisciplinary progress in food production, food security and environment research (open access)

Interdisciplinary progress in food production, food security and environment research

Article discussing interdisciplinary progress in food production, food security and environment research.
Date: 2011
Creator: Acevedo, Miguel F.
Object Type: Article
System: The UNT Digital Library
Seasonal variations of biogeochemical matter export along the Langtang-Narayani river system in central Himalaya (open access)

Seasonal variations of biogeochemical matter export along the Langtang-Narayani river system in central Himalaya

Article describes study in which weathering and suspended matter fluxes of the Langtang Narayani river system in central Nepal Himalaya were investigated at 16 stations for one year, based on monthly water sampling in the lower reaches and bi-monthly in higher elevation areas, to determine temporal variations of weathering fluxes along an elevation profile between 169 and 3989 m asl.
Date: July 7, 2018
Creator: Bhatt, Maya P.; Hartmann, Jens & Acevedo, Miguel F.
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
FY2021 DARPA YFA: Next generation of wireless power transfer network of Unmanned Aircraft System (UAS) using electromechanical beamforming (open access)

FY2021 DARPA YFA: Next generation of wireless power transfer network of Unmanned Aircraft System (UAS) using electromechanical beamforming

Data management plan for the grant "FY2021 DARPA YFA: Next generation of wireless power transfer network of Unmanned Aircraft System (UAS) using electromechanical beamforming." Research aiming to develop the next generation of wireless power transfer (WPT) network that is scalable, safe, and efficient and can be deployed in a UAS by incorporating waveform engineering, electromechanical beamforming, integrated phased-array antenna, and transmitter (TX)/receiver (RX) co-design. This project aims to reveal the fundamental understanding of the energy sphere formation in a 3D space using UAVs as a case study. Although interests in radiative (far-field) WPT using beamforming has been growing rapidly because of its capability to energize a large number of autonomous devices, most of these works are still in the theoretical phase without any practical implementation. This project aims to implement a robust beamforming network using a bottom-up approach (from the antenna to the inter-connected network) that is highly important for addressing the challenges associated with a dynamically changing environment.
Date: 2021-08-02/2023-08-01
Creator: Mahbub, Ifana
Object Type: Text
System: The UNT Digital Library
Carbon Nanomaterials for Optical Absorber Applications (open access)

Carbon Nanomaterials for Optical Absorber Applications

Article describing optical absorbers based on vertically aligned multi-walled carbon nanotubes (MWCNTs), synthesized using electric-field assisted growth that show an ultra-low reflectance, 100X lower compared to the benchmark, a diffuse metal black - Au-black - from wavelength λ ~ 350 nm – 2500 nm.
Date: December 28, 2011
Creator: Kaul, Anupama; Coles, James; Megerian, Krikor; Eastwood, Michael; Green, Robert; Pagano, Thomas et al.
Object Type: Article
System: The UNT Digital Library
Eficiência de um sistema piloto de dessalinização de água salobra (open access)

Eficiência de um sistema piloto de dessalinização de água salobra

Article describes study which sought to evaluate the efficiency of pilot water desalination system treating brackish water which was obtained mixing fresh water and seawater up to reach 1,500 mg L-1 of total dissolved solids (TDS) concentration.
Date: March 16, 2020
Creator: Almeida, Juliano Penteado de; Kummer, Ana Carolina Barbosa; Carranza, Gabriel; Campos, Luiza Cintra; Széliga, Marcos Rogério; Acevedo, Miguel F. et al.
Object Type: Article
System: The UNT Digital Library
Tuneable complementary metamaterial structures based on graphene for single and multiple transparency windows (open access)

Tuneable complementary metamaterial structures based on graphene for single and multiple transparency windows

Article describes a study examining novel graphene-based tunable plasmonic metamaterials featuring single and multiple transparency windows.
Date: August 22, 2014
Creator: Ding, Jun; Arigong, Bayaner; Ren, Han; Zhou, Mi; Shao, Jin; Lu, Meng et al.
Object Type: Article
System: The UNT Digital Library
Instrument, System and Method for Automated Low Cost Atmospheric Measurements (open access)

Instrument, System and Method for Automated Low Cost Atmospheric Measurements

Patent relating to an instrument, system and method for automated low cost atmospheric measurements.
Date: May 11, 2006
Creator: Acevedo, Miguel F.; Waller, William T. & Nebgen, Gilbert B.
Object Type: Patent
System: The UNT Digital Library
Dinámica y Control de Malezas Acuáticas en Algunas Islas de la Zona Protegida Delta del Río Orinoco (open access)

Dinámica y Control de Malezas Acuáticas en Algunas Islas de la Zona Protegida Delta del Río Orinoco

Report on the dynamics and control of aquatic weeds in some islands of the protected area of the Orinoco Delta.
Date: September 1983
Creator: Acevedo, Miguel F.; Díaz-Miranda, David & Elena Morros, María
Object Type: Report
System: The UNT Digital Library
Informacion Ambiental y Ecologica Sobre los Llanos del Rio Orinoco: Proyecto Orinoco-Apure: Seccion 3 (open access)

Informacion Ambiental y Ecologica Sobre los Llanos del Rio Orinoco: Proyecto Orinoco-Apure: Seccion 3

This report is section three of a study of the Llanos del Rio Orinoco. The aim of the 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
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
PAN-EARTH Sub-Saharan Africa Workshop Report (open access)

PAN-EARTH Sub-Saharan Africa Workshop Report

Report on the PAN-EARTH Sub-Saharan Africa Workshop. This workshop focused on the effects of global climate changes on the agriculture and ecology of the countries of sub-Saharan Africa.
Date: September 1989
Creator: Bezuneh, Taye; Harwell, Mark A.; Menyonga, Joseph Mufu; Acevedo, Miguel F.; Ackerman, Thomas P.; Aho, Nestor et al.
Object Type: Report
System: The UNT Digital Library
Algunos criterios para el establecimiento de prioridades de investigacion en el eje fluvial Orinoco-Apure (open access)

Algunos criterios para el establecimiento de prioridades de investigacion en el eje fluvial Orinoco-Apure

This report reflects the efforts of the Office of the Orinoco-Apure Project to define an environmental policy based research delineating priority areas of research and identification of potential environmental impacts of the project.
Date: March 1984
Creator: Acevedo, Miguel F.
Object Type: Report
System: The UNT Digital Library
Biocompatible, large-format, inkjet printed heterostructure molybdenum disulfide-graphene photodetectors on conformable substrates (open access)

Biocompatible, large-format, inkjet printed heterostructure molybdenum disulfide-graphene photodetectors on conformable substrates

This article describes an inkjet printed, biocompatible, heterostructure photodetector that was constructed using inks of photo-active molybdenum disulfide (MoS2) and electrically conducting graphene which facilitated charge collection of the photocarriers. The importance of such devices stems from their potential utility in age-related-macular degeneration, which is a condition where the photosensitive retinal tissue degrades with aging, eventually compromising vision. The absence of effective therapeutic remedies for patients with this disorder has motivated the development of such devices to restore some degree of visual function.
Date: September 7, 2017
Creator: Hossain, Ridwan F.; Deaguero, Isaac G.; Boland, Thomas & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library

Using Wireless Sensor Network Controls to monitor an indoor Aquaponic System

This presentation discusses research on aquaponic control systems. Researchers built a simple automatic control of an aquaponic ecosystem.
Date: 2013
Creator: Guerrero, Jose; Edwards, Fern; Wan, Yan & Sheth, Vardhman
Object Type: Presentation
System: The UNT Digital Library
Three-Dimensional Printed, Dual-Band, Dual-Circularly Polarized Antenna Array Using Gap Waveguide Technology (open access)

Three-Dimensional Printed, Dual-Band, Dual-Circularly Polarized Antenna Array Using Gap Waveguide Technology

Article proposes a gap waveguide (GW)-based 4 × 4 dual-band, dual-circularly polarized antenna array. The combination of dual-band, dual-circularly polarized capability, high gain, high efficiency, lightweight, low cost and compact size renders the proposed design a potential candidate for commercial millimeter wave communication applications.
Date: October 22, 2022
Creator: Wu, Sifan; Li, Jianxing; Cao, Yuanxi; Yan, Sen; Xu, Kaida & Luyen, Hung
Object Type: Article
System: The UNT Digital Library
GPS: Rocket captions transcript

GPS: Rocket

This video discusses research on developing a rocket recovery system with sensor networks and wireless communication. The research team project was to develop a GPS/GSM based tracking system for the recovery of high power model rockets. This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
Date: 2013
Creator: Gscheidle, Karl H.; Hardy, Debra; Kulle, Gregory; Bih, Michael & Acevedo, Miguel F.
Object Type: Video
System: The UNT Digital Library
G-DaM: A Distributed Data Storage with Blockchain Framework for Management of Groundwater Quality Data (open access)

G-DaM: A Distributed Data Storage with Blockchain Framework for Management of Groundwater Quality Data

Authors discuss their use of a distributed and decentralized architecture to store the statistics, perform double hashing, and implement access control through smart contracts to forecast groundwater availability. Their work demonstrates a modern and innovative approach combining Distributed Data Storage and Blockchain technologies to overcome traditional data sharing, and centralized storage, while addressing blockchain limitations.
Date: November 11, 2022
Creator: Vangipuram, Sukrutha L. T.; Mohanty, Saraju P.; Kougianos, Elias & Ray, Chittaranjan
Object Type: Article
System: The UNT Digital Library

Robotics: Cooperation of Autonomous Robots Using Bluetooth Communication

This poster discusses research on the cooperation of autonomous robots using Bluetooth communication. Researchers explore multi-agent NXT Robotics systems using a Bluetooth communication channel. This research is part of Research Experiences for Teachers (RET) in Sensor Education, a National Science Foundation (NSF) funded grant project.
Date: 2013
Creator: Freeman, Elizabeth; Bell, Jesse; Namuduri, Kamesh & Costilla, Omar
Object Type: Poster
System: The UNT Digital Library
Coupling of Surface Plasmon Polariton in Al-Doped ZnO with Fabry-Pérot Resonance for Total Light Absorption (open access)

Coupling of Surface Plasmon Polariton in Al-Doped ZnO with Fabry-Pérot Resonance for Total Light Absorption

This article presents finite-difference time-domain (FDTD) simulations on total light absorption (TLA) resulting from the coupling of a surface plasmon polariton (SPP) with Fabry-Pérot (F-P) resonance in a three-layer structure consisting of an AZO square lattice hole array, a spacer, and a layer of silver.
Date: April 27, 2017
Creator: George, David; Adewole, Murthada; Hassan, Safaa; Lowell, David; Cui, Jingbiao; Zhang, Hualiang et al.
Object Type: Article
System: The UNT Digital Library
Broadband Absorption in Patterned Metal/Weakly-Absorbing-Spacer/Metal with Graded Photonic Super-Crystal (open access)

Broadband Absorption in Patterned Metal/Weakly-Absorbing-Spacer/Metal with Graded Photonic Super-Crystal

Article studying high light absorption in two devices: a stack of Au-pattern/insulator/Au-film and a stack of Au-pattern/weakly-absorbing-material/Au-film where the Au-pattern was structured in graded photonic super-crystal. Multiple-band absorption, including one near 1500 nm, in a stack of Au-pattern/spacer/Au-film was observed.
Date: April 8, 2021
Creator: Kamau, Steve; Hassan, Safaa; Alnasser, Khadijah; Zhang, Hualiang; Cui, Jingbiao & Lin, Yuankun
Object Type: Article
System: The UNT Digital Library