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Articles 1 - 30 of 394
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Music Reading For Students With Learning Disabilities, Elizabeth Morrow
Music Reading For Students With Learning Disabilities, Elizabeth Morrow
SAGE Open Access Agreement Publications
As a career cello pedagogue and as a certified dyslexia instructor, I have been sought out by many string teachers for insights into how to help their students who struggle with music reading. Over time, I observed that this was a hidden problem without a research-based solution. To investigate further, I invited a self-selected cohort of string teachers to fill out a survey concerning music reading difficulties in their classrooms or studios. Fifty-two out of fifty-three respondents agreed that they had students in their programs who did not or could not learn to read music within the context of standard …
Earables As Medical Devices: Opportunities And Challenges, Aziz Abdul, Ravi Karkar, Kan Ding, Jay Harvey, Phuc Nguyen
Earables As Medical Devices: Opportunities And Challenges, Aziz Abdul, Ravi Karkar, Kan Ding, Jay Harvey, Phuc Nguyen
Association of Computing Machinery Open Access Agreement Publications
The recent advancements in remote healthcare monitoring have revolutionized clinical practices. They provide reliable and affordable solutions to monitor physiological and neural signals in various environments instead of having to rely solely on on-site clinical monitoring in hospitals and medical centers. Wearable devices,particularly earables, computers placed in or around the ear, have gained considerable attention for their convenience, social acceptability, comfort, and minimal disruption to daily activities. The development of earable devices has been propelled through the recent technological advancements in edge and fog computing, battery technology, and energy harvesting methods [11]. Earables allow us to capture important signals from …
Phishing In The Free Waters: A Study Of Phishing Attacks Created Using Free Website Building Services, Sayak Saha Roy, Karanjit Unique, Shirin Nilizadeh
Phishing In The Free Waters: A Study Of Phishing Attacks Created Using Free Website Building Services, Sayak Saha Roy, Karanjit Unique, Shirin Nilizadeh
Association of Computing Machinery Open Access Agreement Publications
Free Website Building services (FWBs) provide individuals with a cost-effective and convenient way to create a website without requiring advanced technical knowledge or coding skills. However, malicious actors often abuse these services to host phishing websites. In this work, we propose FreePhish, a scalable framework to continuously identify phishing websites that are created using FWBs. Using FreePhish, we were able to detect and characterize more than 31.4K phishing URLs that were created using 17 unique free website builder services and shared on Twitter and Facebook over a period of six months. We find that FWBs provide attackers with several features …
User Disengagement-Oriented Target Enforcement For Multi-Tenant Database Systems, Li Ning, Hao Che, Wang Zhijun, Minh Q. Nguyen, Todd Rosenkrantz
User Disengagement-Oriented Target Enforcement For Multi-Tenant Database Systems, Li Ning, Hao Che, Wang Zhijun, Minh Q. Nguyen, Todd Rosenkrantz
Association of Computing Machinery Open Access Agreement Publications
Unexpected long query latency of a database system can cause domino effects on all the upstream services and severely degrade end users’ experience with unpredicted long waits, resulting in an increasing number of users disengaged with the services and thus leading to a high user disengagement ratio (UDR). A high UDR usually translates to reduced revenue for service providers. This paper proposes UTSLO, a UDR-oriented SLO guaranteed system, which enables a database system to support multi-tenant UDR targets in a cost-effective fashion through UDR-oriented capacity planning and dynamic UDR target enforcement. The former aims to estimate the feasibility of UDR …
Phishing In The Free Waters: A Study Of Phishing Attacks Created Using Free Website Building Services, Sayak Saha Roy, Karanjit Unique, Shirin Nilizadeh
Phishing In The Free Waters: A Study Of Phishing Attacks Created Using Free Website Building Services, Sayak Saha Roy, Karanjit Unique, Shirin Nilizadeh
Computer Science and Engineering Faculty Publications
Free Website Building services (FWBs) provide individuals with a cost-effective and convenient way to create a website without requiring advanced technical knowledge or coding skills. However, malicious actors often abuse these services to host phishing websites. In this work, we propose FreePhish, a scalable framework to continuously identify phishing websites that are created using FWBs. Using FreePhish, we were able to detect and characterize more than 31.4K phishing URLs that were created using 17 unique free website builder services and shared on Twitter and Facebook over a period of six months. We find that FWBs provide attackers with several features …
Audience Engagement Techniques In Oral Presentations, Daniel Usera
Audience Engagement Techniques In Oral Presentations, Daniel Usera
SAGE Open Access Agreement Publications
Public speaking is often conceptualized as a one-way monologue performed by a speaker for a listening audience. This monologic approach faces challenges and limited results as demonstrated by the education literature on active learning. In response to this research, this practitioner article explores the nature and effective execution of five universal Audience Engagement Techniques that provide opportunities for a speaker to turn their passively listening audience into active participants in a dialogue. Practical and theoretical implications of Audience Engagement Techniques generally are also discussed.
Expert Knowledge-Aware Image Difference Graph Representation Learning For Difference-Aware Medical Visual Question Answering, Xinyue Hu, Lin Gu, An Qiyuan, Mengliang Zhang, Liu Liangchen, Kobayashi Kazuma, Harada Tatsuya, M. Ronald Summers, Yingying Zhu
Expert Knowledge-Aware Image Difference Graph Representation Learning For Difference-Aware Medical Visual Question Answering, Xinyue Hu, Lin Gu, An Qiyuan, Mengliang Zhang, Liu Liangchen, Kobayashi Kazuma, Harada Tatsuya, M. Ronald Summers, Yingying Zhu
Association of Computing Machinery Open Access Agreement Publications
To contribute to automating the medical vision-language model, we propose a novel Chest-Xray Difference Visual Question Answering (VQA) task. Given a pair of main and reference images, this task attempts to answer several questions on both diseases and, more importantly, the differences between them. This is consistent with the radiologist’s diagnosis practice that compares the current image with the reference before concluding the report. We collect a new dataset, namely MIMIC-Diff-VQA, including 700,703 QA pairs from 164,324 pairs of main and reference images. Compared to existing medical VQA datasets, our questions are tailored to the Assessment Diagnosis-Intervention-Evaluation treatment procedure used …
Expert Knowledge-Aware Image Difference Graph Representation Learning For Difference-Aware Medical Visual Question Answering, Xinyue Hu, Lin Gu, An Qiyuan, Mengliang Zhang, Liu Liangchen, Kobayashi Kazuma, Harada Tatsuya, M. Ronald Summers, Yingying Zhu
Expert Knowledge-Aware Image Difference Graph Representation Learning For Difference-Aware Medical Visual Question Answering, Xinyue Hu, Lin Gu, An Qiyuan, Mengliang Zhang, Liu Liangchen, Kobayashi Kazuma, Harada Tatsuya, M. Ronald Summers, Yingying Zhu
Computer Science and Engineering Faculty Publications
To contribute to automating the medical vision-language model, we propose a novel Chest-Xray Difference Visual Question Answering (VQA) task. Given a pair of main and reference images, this task attempts to answer several questions on both diseases and, more importantly, the differences between them. This is consistent with the radiologist’s diagnosis practice that compares the current image with the reference before concluding the report. We collect a new dataset, namely MIMIC-Diff-VQA, including 700,703 QA pairs from 164,324 pairs of main and reference images. Compared to existing medical VQA datasets, our questions are tailored to the Assessment Diagnosis-Intervention-Evaluation treatment procedure used …
Braidflow: A Flow-Annotated Dataset Of Kumihimo Braidmaking Activity, Akib Zaman, Mohammad Abu Nasir Rakib, Shreyosi Endow, Cesar Torres
Braidflow: A Flow-Annotated Dataset Of Kumihimo Braidmaking Activity, Akib Zaman, Mohammad Abu Nasir Rakib, Shreyosi Endow, Cesar Torres
Association of Computing Machinery Open Access Agreement Publications
Entering a cognitive state of fow is a natural response of the mind that allows people to fully concentrate and cope with tedious, and often repetitive tasks. Understanding how to trigger or sustain fow remains limited by retrospective surveys, presenting a need to better document fow. Through a validation study, we frst establish braidmaking as a fow-inducing task. We then study how braidmaking can be used to unpack the experience of fow on a moment-by-moment basis. Using an instrumented Kumihimo braidmaking tool and of-the-shelf biosignal wristbands, we record the experiences of 24 users engaged in 3 diferent braidmaking tasks. Feature …
Harnessing Large Language Models For Simulink Toolchain Testing And Developing Diverse Open-Source Corpora Of Simulink Models For Metric And Evolution Analysis, Sohil Lal Shrestha
Harnessing Large Language Models For Simulink Toolchain Testing And Developing Diverse Open-Source Corpora Of Simulink Models For Metric And Evolution Analysis, Sohil Lal Shrestha
Association of Computing Machinery Open Access Agreement Publications
MATLAB/Simulink is a de-facto standard tool in several safety-critical industries such as automotive, aerospace, healthcare, and industrial automation for system modeling and analysis, compiling models to code, and deploying code to embedded hardware. On one hand, testing cyber-physical system (CPS) development tools such as MathWorks’ Simulink is important as a bug in the toolchain may propagate to the artifacts they produce. On the other hand, it is equally important to understand modeling practices and model evolution to support engineers and scientists as they are widely used in design, simulation, and verification of CPS models. Existing work in this area is …
Tacit Descriptions: Uncovering Ambiguity In Crowdsourced Descriptions Of Motions And Materials, Shreyosi Endow, Cesar Torres
Tacit Descriptions: Uncovering Ambiguity In Crowdsourced Descriptions Of Motions And Materials, Shreyosi Endow, Cesar Torres
Association of Computing Machinery Open Access Agreement Publications
Although a picture, GIF, or tutorial video is "worth a thousand words", every viewer has a unique perspective of which words they ‘see.’ Packed with rich meaning, these words, or descriptions, are often used to describe the ambiguity of working with materials, artifacts, and processes in creative practices. Our work reframes the traditional crowdsourced description tasks to leverage crowdworker diversity in generating a corpus of tacit descriptions. These descriptions are synthesized into a typology and describe how users communicate ambiguity and tacit knowledge embedded in unfamiliar material properties and familiar handed motions. We propose three design concepts that demonstrate how …
Thermoplastic Kilnforms: Extending Glass Kilnforming Techniques To Thermoplastic Materials Using Ontology-Driven Design, Mohammad Abu Nasir Rakib, Jeremy Scidmore, Justin Ginsberg, Cesar Torres
Thermoplastic Kilnforms: Extending Glass Kilnforming Techniques To Thermoplastic Materials Using Ontology-Driven Design, Mohammad Abu Nasir Rakib, Jeremy Scidmore, Justin Ginsberg, Cesar Torres
Association of Computing Machinery Open Access Agreement Publications
The ecology of thermoplastic materials is rapidly evolving, enabling an exciting landscape of functional, aesthetic, and interactive forms. Despite their utility in fused flament fabrication (FFF), an even larger and untapped design space exists for thermoplastics. In this work, we introduce a design method that leverages similarities with a more mature medium (glass) to guide a material-centered exploration of a new medium (thermoplastics). Through a collaboration between domain experts in thermoplastics and glass, we synthesized an ontology of kilnforming techniques and developed an annotated portfolio of thermoplastic kilnforms that capture generative design directions for altering the phenomenological qualities of plastic, …
A Teleoperation Framework For Robots Utilizing Control Barrier Functions In Virtual Reality, Aref Hebri, Sneh Acharya, Fillia Makedon
A Teleoperation Framework For Robots Utilizing Control Barrier Functions In Virtual Reality, Aref Hebri, Sneh Acharya, Fillia Makedon
Association of Computing Machinery Open Access Agreement Publications
This paper describes a novel shared control teleoperation framework for mobile robots that utilizes Control Barrier Functions (CBFs) as filtering mechanism to prevent a human operator from making dangerous actions. The proposed framework demonstrates the potential to create a CBF controller that enables users with no prior knowledge of robotics to safely tele-navigate mobile robots with limited situational awareness. As formal methods, we utilize a hand-crafted CBF, which acts as a repulsive field to describe unsafe regions withing the robot’s vicinity. The implementation of the application was deemed possible by creating a Virtual Reality (VR) simulation in the Unity Engine …
Remote Operated Human Robot Interactive System Using Hand Gestures For Persons With Disabilities, Enamul Karim, Harish Nambiappan, Sneh Acharya, Fillia Makedon
Remote Operated Human Robot Interactive System Using Hand Gestures For Persons With Disabilities, Enamul Karim, Harish Nambiappan, Sneh Acharya, Fillia Makedon
Association of Computing Machinery Open Access Agreement Publications
This paper proposes a novel Human-Robot Interactive System where users can interact with the robotic system using hand gestures, even from a distance, through a smartphone-based IoT-Controller Framework. The system is primarily designed to help people with vocal and hearing impairments. A mobile application records user gestures shown in front of a smartphone and sends the data to a server. The server performs gesture recognition and forms a command which is sent to the robotic system. The robotic system performs the required task based on the given command. The robotic system is set to carry out an object pick and …
An Rgb-D Fusion System For Indoor Wheelchair Navigation, Christos Sevastopoulos, Sneh Acharya, Fillia Makedon
An Rgb-D Fusion System For Indoor Wheelchair Navigation, Christos Sevastopoulos, Sneh Acharya, Fillia Makedon
Association of Computing Machinery Open Access Agreement Publications
We present a method for extracting high-level semantic information through successful landmark detection using feature fusion between RGB and depth information. We focus on the classification of specific labels (open path, humans, staircases, doorways, obstacles) in the encountered scene, which can be a fundamental source of information enhancing scene understanding, and acting towards the safe navigation of the mobile unit. Experiments are conducted using a manual wheelchair equipped with a stereo RGB-D camera that captures image instances consisting of multiple labels before fine-tuning on a pre-trained Vision Transformer (ViT).
Smartfunction: An Immersive Vr System To Assess Attention Using Embodied Cognition, Ashish Jaiswal, Aref Hebri, Pavel Hamza Reza, Zadeh Mohammad Zaki, Fillia Makedon
Smartfunction: An Immersive Vr System To Assess Attention Using Embodied Cognition, Ashish Jaiswal, Aref Hebri, Pavel Hamza Reza, Zadeh Mohammad Zaki, Fillia Makedon
Association of Computing Machinery Open Access Agreement Publications
In traditional neuropsychological tests, executive functions (EFs) are typically evaluated using paper and pencil or computer-based sit-down tasks. However, a new assessment framework, the Automated Test of Embodied Cognition (ATEC), has been developed to measure EFs and embodied cognition through physical tasks. This paper proposes integrating the ATEC system with virtual reality (VR) to evaluate and diagnose attention-deficit disorders using embodied cognition (EC) principles. The VR system will utilize Meta Quest 2 VR headsets and controllers with motion sensors to accurately capture users’ physical movements. The collected motion data will be transmitted to a remote server for evaluation through machine …
Detecting Cognitive Fatigue In Subjects With Traumatic Brain Injury From Fmri Scans Using Self-Supervised Learning, Ashish Jaiswal, Ramesh Babu Ashwin, Zadeh Mohammad Zaki, Glenn Wylie, Fillia Makedon
Detecting Cognitive Fatigue In Subjects With Traumatic Brain Injury From Fmri Scans Using Self-Supervised Learning, Ashish Jaiswal, Ramesh Babu Ashwin, Zadeh Mohammad Zaki, Glenn Wylie, Fillia Makedon
Association of Computing Machinery Open Access Agreement Publications
Understanding cognitive states from fMRI data have yet to be investigated to its full extent due to its complex nature. In this work, the problem of understanding cognitive fatigue among TBI patients has been formulated as a multi-class classification problem. We built a Spatio-temporal encoder model using convolutions and LSTMs as the building blocks to extract spatial features and to model the 4D nature of fMRI scans. To learn a better representation of the data and the condition, we used a self-supervised learning technique called "Contrastive Learning" to pretrain our encoder with a public dataset BOLD5000 and further fine-tuned our …
Evaluation Of Video Compression Methods For Network Transmission On Diverse Data: A Case Study, Roman Strukov, Vassilis Athitsos
Evaluation Of Video Compression Methods For Network Transmission On Diverse Data: A Case Study, Roman Strukov, Vassilis Athitsos
Association of Computing Machinery Open Access Agreement Publications
There is a variety of video compression methods proposed in the literature. Choosing the best method for a specific type of video can involve a lot of experimentation and trial-and-error. This paper offers a quantitative evaluation of three popular compression methods, namely HEVC, MJPEG, MJPEG2000. Our evaluation uses five different types of video data that are commonly transmitted over a network. We use two evaluation metrics, namely PSNR and encoding time. While our evaluation is still preliminary, and will eventually be expanded to include more compression methods, larger datasets, and more metrics, it already includes features not encountered in evaluations …
An Eeg-Based Cognitive Fatigue Detection System, Karim Enamul, Pavel Hamza Reza, Ashish Jaiswal, Zadeh Mohammad Zaki, Michail Theodanidis, Glenn Wylie, Fillia Makedon
An Eeg-Based Cognitive Fatigue Detection System, Karim Enamul, Pavel Hamza Reza, Ashish Jaiswal, Zadeh Mohammad Zaki, Michail Theodanidis, Glenn Wylie, Fillia Makedon
Association of Computing Machinery Open Access Agreement Publications
Mental or Cognitive fatigue (CF) is the exhaustion of the neurological system brought on by prolonged cognitive tasks. It causes performance to decline in day-to-day life. Throughout this paper, we present an experimental setup where we artificially induce cognitive fatigue to participants. During the experimental process, we collected electroencephalogram (EEG) signals from the subjects that participated in the experiment. The goal of the study is to detect the presence or absence of cognitive fatigue. Our proposed solution was able to classify cognitive fatigue of the subjects with an accuracy of 88.17%.
Remote Operated Human Robot Interactive System Using Hand Gestures For Persons With Disabilities, Enamul Karim, Harish Nambiappan, Sneh Acharya, Fillia Makedon
Remote Operated Human Robot Interactive System Using Hand Gestures For Persons With Disabilities, Enamul Karim, Harish Nambiappan, Sneh Acharya, Fillia Makedon
Computer Science and Engineering Faculty Publications
This paper proposes a novel Human-Robot Interactive System where users can interact with the robotic system using hand gestures, even from a distance, through a smartphone-based IoT-Controller Framework. The system is primarily designed to help people with vocal and hearing impairments. A mobile application records user gestures shown in front of a smartphone and sends the data to a server. The server performs gesture recognition and forms a command which is sent to the robotic system. The robotic system performs the required task based on the given command. The robotic system is set to carry out an object pick and …
Smartfunction: An Immersive Vr System To Assess Attention Using Embodied Cognition, Ashish Jaiswal, Aref Hebri, Pavel Hamza Reza, Zadeh Mohammad Zaki, Fillia Makedon
Smartfunction: An Immersive Vr System To Assess Attention Using Embodied Cognition, Ashish Jaiswal, Aref Hebri, Pavel Hamza Reza, Zadeh Mohammad Zaki, Fillia Makedon
Computer Science and Engineering Faculty Publications
In traditional neuropsychological tests, executive functions (EFs) are typically evaluated using paper and pencil or computer-based sit-down tasks. However, a new assessment framework, the Automated Test of Embodied Cognition (ATEC), has been developed to measure EFs and embodied cognition through physical tasks. This paper proposes integrating the ATEC system with virtual reality (VR) to evaluate and diagnose attention-deficit disorders using embodied cognition (EC) principles. The VR system will utilize Meta Quest 2 VR headsets and controllers with motion sensors to accurately capture users’ physical movements. The collected motion data will be transmitted to a remote server for evaluation through machine …
Detecting Cognitive Fatigue In Subjects With Traumatic Brain Injury From Fmri Scans Using Self-Supervised Learning, Ashish Jaiswal, Ramesh Babu Ashwin, Zadeh Mohammad Zaki, Glenn Wylie, Fillia Makedon
Detecting Cognitive Fatigue In Subjects With Traumatic Brain Injury From Fmri Scans Using Self-Supervised Learning, Ashish Jaiswal, Ramesh Babu Ashwin, Zadeh Mohammad Zaki, Glenn Wylie, Fillia Makedon
Computer Science and Engineering Faculty Publications
Understanding cognitive states from fMRI data have yet to be investigated to its full extent due to its complex nature. In this work, the problem of understanding cognitive fatigue among TBI patients has been formulated as a multi-class classification problem. We built a Spatio-temporal encoder model using convolutions and LSTMs as the building blocks to extract spatial features and to model the 4D nature of fMRI scans. To learn a better representation of the data and the condition, we used a self-supervised learning technique called "Contrastive Learning" to pretrain our encoder with a public dataset BOLD5000 and further fine-tuned our …
An Eeg-Based Cognitive Fatigue Detection System, Karim Enamul, Pavel Hamza Reza, Ashish Jaiswal, Zadeh Mohammad Zaki, Michail Theodanidis, Glenn Wylie, Fillia Makedon
An Eeg-Based Cognitive Fatigue Detection System, Karim Enamul, Pavel Hamza Reza, Ashish Jaiswal, Zadeh Mohammad Zaki, Michail Theodanidis, Glenn Wylie, Fillia Makedon
Computer Science and Engineering Faculty Publications
Mental or Cognitive fatigue (CF) is the exhaustion of the neurological system brought on by prolonged cognitive tasks. It causes performance to decline in day-to-day life. Throughout this paper, we present an experimental setup where we artificially induce cognitive fatigue to participants. During the experimental process, we collected electroencephalogram (EEG) signals from the subjects that participated in the experiment. The goal of the study is to detect the presence or absence of cognitive fatigue. Our proposed solution was able to classify cognitive fatigue of the subjects with an accuracy of 88.17%.
A Teleoperation Framework For Robots Utilizing Control Barrier Functions In Virtual Reality, Aref Hebri, Sneh Acharya, Fillia Makedon
A Teleoperation Framework For Robots Utilizing Control Barrier Functions In Virtual Reality, Aref Hebri, Sneh Acharya, Fillia Makedon
Computer Science and Engineering Faculty Publications
This paper describes a novel shared control teleoperation framework for mobile robots that utilizes Control Barrier Functions (CBFs) as filtering mechanism to prevent a human operator from making dangerous actions. The proposed framework demonstrates the potential to create a CBF controller that enables users with no prior knowledge of robotics to safely tele-navigate mobile robots with limited situational awareness. As formal methods, we utilize a hand-crafted CBF, which acts as a repulsive field to describe unsafe regions withing the robot’s vicinity. The implementation of the application was deemed possible by creating a Virtual Reality (VR) simulation in the Unity Engine …
An Rgb-D Fusion System For Indoor Wheelchair Navigation, Christos Sevastopoulos, Sneh Acharya, Fillia Makedon
An Rgb-D Fusion System For Indoor Wheelchair Navigation, Christos Sevastopoulos, Sneh Acharya, Fillia Makedon
Computer Science and Engineering Faculty Publications
We present a method for extracting high-level semantic information through successful landmark detection using feature fusion between RGB and depth information. We focus on the classification of specific labels (open path, humans, staircases, doorways, obstacles) in the encountered scene, which can be a fundamental source of information enhancing scene understanding, and acting towards the safe navigation of the mobile unit. Experiments are conducted using a manual wheelchair equipped with a stereo RGB-D camera that captures image instances consisting of multiple labels before fine-tuning on a pre-trained Vision Transformer (ViT).
The University Of Texas At Arlington: Green Infrastructure Report, Center For Metropolitan Density, Uta Office Of Facilities Management, Uta Office Of Sustainability, City Of Arlington, Us Epa, One Architecture & Urbanism, Climate Resilience Consulting, Sherwood Design Engineers, Taner R. Ozdil
The University Of Texas At Arlington: Green Infrastructure Report, Center For Metropolitan Density, Uta Office Of Facilities Management, Uta Office Of Sustainability, City Of Arlington, Us Epa, One Architecture & Urbanism, Climate Resilience Consulting, Sherwood Design Engineers, Taner R. Ozdil
Center for Metropolitan Density Publications
On the University of Texas at Arlington campus, investing in green infrastructure is critical for managing stormwater and heat stress today and addressing the emerging challenges caused by a changing climate: shifting precipitation patterns, “cloudbursts” or flash floods, and more frequent and severe extreme heat events. In 2022, the U.S. Environmental Protection Agency provided technical assistance to UTA as part of the tenth anniversary of the Campus RainWorks Challenge, a national design competition that advances green infrastructure design on college and university campuses across the country. This report builds on UTA’s extensive engagement with the competition and envisions the campus …
Turbohash: A Hash Table For Key-Value Store On Persistent Memory, Xingsheng Zhao, Chen Zhong, Song Jiang
Turbohash: A Hash Table For Key-Value Store On Persistent Memory, Xingsheng Zhao, Chen Zhong, Song Jiang
Association of Computing Machinery Open Access Agreement Publications
Major efforts on the design of persistent hash table on a non-volatile byte-addressable memory focus on efficient support of crash consistency with fence/flush primitives as well on non-disruptive table rehashing operations. When a data entry in a hash bucket cannot be updated with one atomic write, out-of-place update, instead of in-place update, is required to avoid data corruption after a failure. This often causes extra fences/flushes. Meanwhile, when open addressing techniques, such as linear probing, are adopted for high load factor, the scope of search for a key can be large. Excessive use of fence/flush and extended key search paths …
Dronechase: A Mobile And Automated Cross-Modality System For Continuous Drone Tracking, Neel R. Vora, Yi Wu, Jian Liu, Phuc Nguyen
Dronechase: A Mobile And Automated Cross-Modality System For Continuous Drone Tracking, Neel R. Vora, Yi Wu, Jian Liu, Phuc Nguyen
Association of Computing Machinery Open Access Agreement Publications
This paper presents DroneChase, an automated sensing system that monitors acoustic and visual signals captured from a nearby flying drone to track its trajectory in both line-of-sight and non-line-of-sight conditions under mobility settings. Although drone monitoring has been an active research topic, most of the existing monitoring systems focus only on line-of-sight conditions and do not perform well under blockage conditions. Inspired by the human ability to localize objects in the environment using both visual and auditory signals, we develop a mobile system that integrates the information from multiple modalities into a reference scenario and performs real-time drone detection and …
Towards Robust Lidar-Based 3d Detection And Tracking Of Uavs, Tasnim Azad Abir, Endrowednes Kuantama, Richard Han, Judith Dawes, Rich Mildren, Phuc Nguyen
Towards Robust Lidar-Based 3d Detection And Tracking Of Uavs, Tasnim Azad Abir, Endrowednes Kuantama, Richard Han, Judith Dawes, Rich Mildren, Phuc Nguyen
Association of Computing Machinery Open Access Agreement Publications
In this paper, we study the robustness of lidar-based 3D detection & tracking of UAVs. We investigate the effective detection ranges of different UAVs based on their construction materials and the effective range & 3D detection performance of a specific UAV at different atmospheric visibility conditions. Further, we examine to what extent lidar-based systems can track a drone's trajectories via real-world experiments and point cloud data processing. Using a COTS lidar-based system (Livox Mid-40), we confirm that we can track UAVs in a fine-grained manner at up to 80m distance under various environmental conditions (i.e., morning, afternoon, and night).
Effects Of A Repeated Reading Intervention Delivered Online To Upper Elementary Students, John Elwood Romig, Ashley Jetton
Effects Of A Repeated Reading Intervention Delivered Online To Upper Elementary Students, John Elwood Romig, Ashley Jetton
SAGE Open Access Agreement Publications
Repeated reading is an intervention with strong evidence for improving students' oral reading fluency. However, little research has examined the use of this intervention outside of traditional school contexts. School closures due to COVID-19 forced schools and teacher preparation programs to create new approaches to evidence-based reading interventions that could be delivered online. This study examined the effects of a repeated reading fluency intervention delivered synchronously online. A single-case repeated acquisition design examined the intervention's effects on three upper elementary students' correct word reading fluency, defined as the number of words read correctly per minute. Visual analysis indicated repeated readings …