A5067190999- Underwater Vehicles and Communication Systems
- Underwater Acoustics Research
- Maritime and Coastal Archaeology
- Robotics and Sensor-Based Localization
- Healthcare professionals’ stress and burnout
- Nursing Roles and Practices
- Medieval Literature and History
- Innovations in Medical Education
- Marine animal studies overview
- Methane Hydrates and Related Phenomena
- Primary Care and Health Outcomes
- 3D Surveying and Cultural Heritage
- bioluminescence and chemiluminescence research
- Marine and fisheries research
- Geological and Geochemical Analysis
- Workplace Health and Well-being
- Remote Sensing and LiDAR Applications
- Maritime Navigation and Safety
- Medical Education and Admissions
- Simulation-Based Education in Healthcare
- Linguistics and language evolution
- Geological and Geophysical Studies
- Health Sciences Research and Education
- Global Maritime and Colonial Histories
- Coral and Marine Ecosystems Studies
University of Rhode Island
2011-2024
Fryderyk Chopin University of Music
2024
Butler University
2017-2023
Takeda (United States)
2023
Physician Assistant Education Association
2023
Portland State University
2022
Committee on Publication Ethics
2022
St. Christopher's Hospital for Children
2022
Yale University
2020-2021
Midwestern University
2021
Abstract The goals of this article are twofold. First, we detail the operations and discuss results 2005 Chios ancient shipwreck survey. This survey was conducted by an international team engineers, archaeologists, natural scientists off Greek island in northeastern Aegean Sea using autonomous underwater vehicle (AUV) built specifically for high‐resolution site inspection characterization. Second, as context, identify specific challenges adapting AUV technology deep water archaeology...
Oxygen minimum zones (OMZs), large midwater regions of very low oxygen, are expected to expand as a result climate change. While oxygen is known be important in structuring ecosystems, precise and mechanistic understanding the effects on zooplankton lacking. Zooplankton components food webs biogeochemical cycles. Here, we show that, eastern tropical North Pacific OMZ, previously undescribed submesoscale variability has direct effect distribution many major groups. Despite extraordinary...
The Arctic seafloor remains one of the last unexplored areas on Earth.Exploration this unique environment using standard remotely operated oceanographic tools has been obstructed by dense ice cover.In summer 2007 Gakkel Vents Expedition (AGAVE) was conducted with express intention understanding aspects marine biology, chemistry and geology associated hydrothermal venting section mid-ocean ridge known as Ridge.Unlike previous research expeditions to focus high resolution imaging sampling deep...
This paper presents an algorithm to improve sub-sea acoustic multibeam bottom mapping based on the simultaneous and localization (SLAM) methodology. Multibeam bathymetry from underwater water vehicles can yield valuable large scale terrain maps of sea door, but overall accuracy these is typically limited by vehicle position estimates. The solution presented here uses small bathymetric patches created over short time scales in a sub-mapping context. These are registered with respect one...
Abstract The recent Arctic GAkkel Vents Expedition (AGAVE) to the Ocean's Gakkel Ridge (July/August 2007) aboard Swedish icebreaker I/B Oden employed autonomous underwater vehicles (AUVs) for water‐column and ocean bottom surveys. These surveys were unique among AUV operations date in requiring georeferenced navigation proximity seafloor beneath permanent moving ice cover. We report results long‐baseline (LBL) acoustic during under‐ice near adaptation of LBL concept several typical...
In 2005 a Greek and American interdisciplinary team investigated two shipwrecks off the coast of Chios dating to 4th-century B.C. 2nd/1st century. The project pioneered archaeological methods precision acoustic, digital image, chemical survey using an autonomous underwater vehicle (AUV) in-situ sensors, increasing speed data acquisition while decreasing costs. AUV recorded revealing physical dimensions, age, cargo, preservation wrecks. earlier wreck contained more than 350 amphoras,...
This paper presents a method to evaluate the mapping error present in point cloud terrain maps created using robotic vehicles and range sensors. work focuses on environments where no priori ground truth is available self consistency only check against false artifacts errors. The proposed measure based disparity measurement between common sections of environment that have been imaged multiple times. highlights inconsistency map by showing regions overlapping clouds do not fit together well....
Marine archaeology beyond the capabilities of scuba divers is a technologically enabled field. The tool suite includes ship-based systems such as towed side-scan sonars and remotely operated vehicles, more recently free-swimming autonomous underwater vehicles (AUVs). Each these platforms has various imaging mapping appropriate for specific scales tasks. Broadly speaking, AUVs are becoming effective tools locating, identifying, surveying archaeological sites. This paper discusses role in this...
Traditional measures for detecting oil spills in the open-ocean are both difficult to apply and less effective ice-covered seas. In view of increasing levels commercial activity Arctic, there is a growing gap between potential need respond an spill Arctic waters capability do so. particular, no robust operational remotely locate spilt under or encapsulated within sea ice. To date, most research approaches problem from on above ice, thus they suffer 'see' through ice overlying snow. Here we...
Abstract Krill movement behaviors and vertical distributions were measured in spring autumn using a profiling stereo‐camera environmental sensor system to quantify seasonal changes the role of krill Southern Ocean food webs. observed May–June 2013 December 2014 3 bays Western Antarctic Peninsula. abundances determined from situ image sequences collected for up 10 min throughout water column, 625 m deep; 3,345 individual tracks collected. Seasonal coincided with shifts distributions. During...
The purpose of this study was to assess how physician assistant (PA) student depression risk, suicidal ideation, and mental health help-seeking behaviors change during didactic training the relationship between risk demographic factors.Data were obtained through an anonymous online survey sent students in 7 PA programs orientation again at midpoint year. Descriptive statistics, independent samples t-testing, one-way ANOVA analyses used trends patient questionnaire (PHQ-9) scores over 6-month...
Context Research suggests that knowledge gaps regarding the appropriate use of airway adjuncts exist among various health care practitioners, and is especially limited within athletic training. Objective To determine relationship between perceived (PK) actual (AK) adjunct difference in PK after AK assessment. Design Knowledge Patients or Other Participants Two thousand trainers received survey via e-mail; 152 (7.6%) responded. Intervention(s) The assessment included 7 items based on...
Purpose The coronavirus (COVID-19) pandemic has presented physician assistant (PA) educators with unprecedented challenges in delivering content remotely minimal time to develop new pedagogical strategies. We surveyed faculty about their experience during the early weeks of adapting these instructional techniques. Methods An anonymous quantitative and qualitative survey was distributed all individuals registered by programs as Physician Assistant Education Association members. Results...
In recent years, sonar systems for surface and underwater vehicles have increased in resolution become significantly less expensive. As such, these are viable at a wide range of price points appropriate broad set applications on vehicles. However, to take full advantage high-resolution sensors seafloor mapping tasks an adequate navigation solution is also required. GPS-denied environments this usually necessitates simultaneous localization (SLAM) technique maintain good accuracy with minimal...
We report efforts to merge data from the complementary modalities of optical and acoustic sensing for obtaining more accurate representations seafloor. show that principal obstacles merging imaging are distortions inherent each modality. The construction geometrically photomosaics is dominated by incremental errors arising as individual images scaled warped form photomosaic. For microbathymetric mapping, arise sensor position orientation calibration parameters affect our ability construct...