Tootfinder

Automatic Cannulation of Femoral Vessels in a Porcine Shock Model
Nico Zevallos, Cecilia G. Morales, Andrew Orekhov, Tejas Rane, Hernando Gomez, Francis X. Guyette, Michael R. Pinsky, John Galeotti, Artur Dubrawski, Howie Choset
https://arxiv.org/abs/2506.14467

Automatic Cannulation of Femoral Vessels in a Porcine Shock Model
Rapid and reliable vascular access is critical in trauma and critical care. Central vascular catheterization enables high-volume resuscitation, hemodynamic monitoring, and advanced interventions like ECMO and REBOA. While peripheral access is common, central access is often necessary but requires specialized ultrasound-guided skills, posing challenges in prehospital settings. The complexity arises from deep target vessels and the precision needed for needle placement. Traditional techniques, li…

Canada’s Pacific Coast hit hard by trawling, with limited transparency: Report https://news.mongabay.com/2025/07/canadas-pacific-coast-hit-hard-by-trawling-with-limited-transparency-report/

Canada’s Pacific Coast hit hard by trawling, with limited transparency: Report
Trawling vessels pursuing fish are damaging marine ecosystems in Canada’s West Coast waters and could be operating illegally in some cases, and yet they work with insufficient transparency, a new report says. Nine large trawlers have together trawled swaths of the ocean collectively larger than the size of Ireland since 2009, according to the report, […]

The small Island Class vessels (2019-2021) were built in Romania by Dutch firm Damen Shipbuilding: #BCPoli #BCNDP #FastFerry #Shipbuilding

🇳🇴 Norway is supporting the construction of potentially the world’s biggest electric container ships 🚢🔋, amongst other vessels. The two ships, which are capable of carrying 850 containers, will sail between Norway, Sweden and Germany with a 100 MWh battery.
https://

Verdens største elektriske containerskip | Enova
Enova gir rundt 362 millioner kroner i støtte til sju elektriske fartøy og fire ladeanlegg. Blant prosjektene er det som kan bli verdens største batterielektriske containerskip, et gjennombrudd for utslippsfri skipsfart.

Invariant Extended Kalman Filter for Autonomous Surface Vessels with Partial Orientation Measurements
Derek Benham, Easton Potokar, Joshua G. Mangelson
https://arxiv.org/abs/2506.10850

Invariant Extended Kalman Filter for Autonomous Surface Vessels with Partial Orientation Measurements
Autonomous surface vessels (ASVs) are increasingly vital for marine science, offering robust platforms for underwater mapping and inspection. Accurate state estimation, particularly of vehicle pose, is paramount for precise seafloor mapping, as even small surface deviations can have significant consequences when sensing the seafloor below. To address this challenge, we propose an Invariant Extended Kalman Filter (InEKF) framework designed to integrate partial orientation measurements. While con…

Madleen Gaza flotilla live tracker: Greta Thunberg, crew near Gaza | Gaza News | Al Jazeera
https://aje.io/p6b8m7?update=3762371
UN rights expert says Israeli speedboats surrounding Madleen
(Via @…

Hardware-Aware Feature Extraction Quantisation for Real-Time Visual Odometry on FPGA Platforms
Mateusz Wasala, Mateusz Smolarczyk, Michal Danilowicz, Tomasz Kryjak
https://arxiv.org/abs/2507.07903

Hardware-Aware Feature Extraction Quantisation for Real-Time Visual Odometry on FPGA Platforms
Accurate position estimation is essential for modern navigation systems deployed in autonomous platforms, including ground vehicles, marine vessels, and aerial drones. In this context, Visual Simultaneous Localisation and Mapping (VSLAM) - which includes Visual Odometry - relies heavily on the reliable extraction of salient feature points from the visual input data. In this work, we propose an embedded implementation of an unsupervised architecture capable of detecting and describing feature po…

🪤 Shipboard system that uses limestone and seawater could cut CO₂ emissions by half
... lots of research on "second-generation" carbon capture that is calcium, not amine-based
#shipping #maritime #co2

Shipboard system that uses limestone and seawater could cut CO₂ emissions by half
Scientists at USC and Caltech, in collaboration with startup company Calcarea, have developed a promising shipboard system that could remove up to half of carbon dioxide emitted from shipping vessels by converting it into an ocean-safe solution.

Two-time Georgia gubernatorial candidate and voting rights activist Stacey Abrams spoke at the event,
denouncing efforts by the Trump administration to strip the names of activists from Navy vessels, including possibly Medgar Evers.
“They want to take his name off a boat because they don’t want us to have a reminder of how far he sailed us forward,” Abrams told the conference crowd.
U.S. Defense Secretary Pete Hegseth has undertaken an effort to change the names of ships a…

Activists honor assassinated civil rights leader Medgar Evers' birthday
Civil and voting rights activists gathered in Jackson, Mississippi, to honor what would have been the 100th birthday of civil rights leader Medgar Evers. Evers was assassinated by a white supremacist in 1963. The 2025 Democracy in Action Convening, a four-day conference, celebrated Evers last week. Former Georgia state Rep. Stacey Abrams headlined the four-day conference. Abrams, also a voting rights activist, railed against recent actions by President Donald Trump’s administration and denoun…

Good article summarizing a lot of things relevant to continued COVID'19 caution:
https://www.cbc.ca/radio/quirks/beyond-long-covid-1.7485888
Key points:
COVID'19 weakens the immune system:
"""
So it's not just about infecting you and causing respiratory illness and fever and all of the things that we usually get with the viral infection. This virus also specifically causes your immune system to become weaker.
"""
It damages blood vessels:
"""
In addition to SARS-CoV-2's ability to dysregulate the immune system and suppress the immune system, the spike protein itself is very damaging to blood vessel structures as well as red blood cells and platelets themselves.
"""
The folk idea that infections make our immune system stronger and stronger like a muscle just isn't true (or at least, doesn't apply to COVID'19 because of how, unlike most other viruses, it damages the immune system):
"""
For the longest time in the field of immunology, there was the sort of adage that your immune system needs to be tested every now and again to stay strong. That's an old-fashioned idea.
The more new-fashioned and evidence-based idea is that, although your immune system can take on [a COVID] infection, you want to avoid testing it as much as possible because your body is sustaining damage with each infection that it survives.
"""

Isn't it weird how when a Federal Crown Corporation - Marine Atlantic - buys a new ship... there is nary a mention that it was built in China (#BCPoli #BCFerries

Observation of Blood Flow in Major Neck Vessels Modulated 1 by Physiological Maneuvers
Gennadi Saiko, Timothy Burton, Faraz Sadrzadeh-Afsharazar, Shota Yamashita, Kenshin Shimono, Yasuyuki Kakihana, Alexandre Douplik
https://arxiv.org/abs/2507.00231

Observation of Blood Flow in Major Neck Vessels Modulated 1 by Physiological Maneuvers
Large neck vessels (carotid artery and internal jugular vein, IJV) offer a unique opportunity to monitor hemodynamics non-invasively by optical means. The primary shortcoming of past work has been the focus on healthy volunteers in normal physiological conditions and well-controlled environments. To drive the technology closer to the bedside, testing is required under more re-alistic conditions, including in pathologies and real-world environments (e.g., similar toICU or emergency care settings…

Um petroleiro chamado... Vilamoura?! 🤪
https://mstdn.social/@Free_Press/114777787333496781

Aure Free Press :verified: (@Free_Press@mstdn.social)
Attached: 1 image A tanker that called at the Russian ports suffered an explosion while near Libya The Vilamoura, hauling 1 million barrels of oil, is being towed to Greece, where damage will be assessed upon arrival. The cause of the blast is unclear, but it caused water intake and the vessel's engine room is flooded. Four other vessels have suffered explosions this year, all had recently docked at Russian ports #AureFreePress #News #press #headline #Ukraine #Russia #Putin #EU #NATO

PASC-Net:Plug-and-play Shape Self-learning Convolutions Network with Hierarchical Topology Constraints for Vessel Segmentation
Xiao Zhang, Zhuo Jin, Shaoxuan Wu, Fengyu Wang, Guansheng Peng, Xiang Zhang, Ying Huang, JingKun Chen, Jun Feng
https://arxiv.org/abs/2507.04008

PASC-Net:Plug-and-play Shape Self-learning Convolutions Network with Hierarchical Topology Constraints for Vessel Segmentation
Accurate vessel segmentation is crucial to assist in clinical diagnosis by medical experts. However, the intricate tree-like tubular structure of blood vessels poses significant challenges for existing segmentation algorithms. Small vascular branches are often overlooked due to their low contrast compared to surrounding tissues, leading to incomplete vessel segmentation. Furthermore, the complex vascular topology prevents the model from accurately capturing and reconstructing vascular …

Assessing Linear Control Strategies for Zero-Speed Fin Roll Damping
Nikita Savin, Elena Ambrosovskaya, Dmitry Romaev, Anton Proskurnikov
https://arxiv.org/abs/2507.05867

Assessing Linear Control Strategies for Zero-Speed Fin Roll Damping
Roll stabilization is a critical aspect of ship motion control, particularly for vessels operating in low-speed or zero-speed conditions, where traditional hydrodynamic fins lose their effectiveness. In this paper, we consider a roll damping system, developed by Navis JSC, based on two actively controlled zero-speed fins. Unlike conventional fin stabilizers, zero-speed fins employ a drag-based mechanism and active oscillations to generate stabilizing forces even when the vessel is stationary. W…

This https://arxiv.org/abs/2504.10239 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Elastic displacements and viscous flows in wedge-shaped geometries with a straight edge: Green's functions for perpendicular forces
Edges are abundant when elastic solids glide in guiding rails or fluids are contained in vessels. We here address induced displacements in elastic solids or small-scale flows in viscous fluids in the vicinity of one such edge. For this purpose, we solve the governing elasticity equations for linearly elastic, potentially compressible solids, as well as the low-Reynolds-number flow equations for incompressible fluids. Technically speaking, we derive the associated Green's functions under confine…

It was an interesting and fulfilling experience to be part of the @… working group on Winter Science in the Great Lakes. There are so many nuances to how #ClimateChange and development are likely to impact ice and seasonality in the

Minimally Invasive Brain Computer Interfaces: Evaluating the Impact of Tissue Layers on Signal Quality of Sub-Scalp EEG
Timothy B Mahoney, JingYang Liu, Huakun Xin, David B Grayden, Sam E John
https://arxiv.org/abs/2506.03452

Minimally Invasive Brain Computer Interfaces: Evaluating the Impact of Tissue Layers on Signal Quality of Sub-Scalp EEG
Individuals with severe physical disabilities often experience diminished quality of life stemming from limited ability to engage with their surroundings. Brain-Computer Interface (BCI) technology aims to bridge this gap by enabling direct technology interaction. However, current BCI systems require invasive procedures, such as craniotomy or implantation of electrodes through blood vessels, posing significant risks to patients. Sub-scalp electroencephalography (EEG) offers a lower risk alternat…

This https://arxiv.org/abs/2505.06787 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

Digital-physical testbed for ship autonomy studies in the Marine Cybernetics Laboratory basin
The algorithms developed for Maritime Autonomous Surface Ships (MASS) are often challenging to test on actual vessels due to high operational costs and safety considerations. Simulations offer a cost-effective alternative and eliminate risks, but they may not accurately represent real-world dynamics for the given tasks. Utilizing small-scale model ships and robotic vessels in conjunction with a laboratory basin provides an accessible testing environment for the early stages of validation proces…

Surg-SegFormer: A Dual Transformer-Based Model for Holistic Surgical Scene Segmentation
Fatimaelzahraa Ahmed, Muraam Abdel-Ghani, Muhammad Arsalan, Mahmoud Ali, Abdulaziz Al-Ali, Shidin Balakrishnan
https://arxiv.org/abs/2507.04304

Surg-SegFormer: A Dual Transformer-Based Model for Holistic Surgical Scene Segmentation
Holistic surgical scene segmentation in robot-assisted surgery (RAS) enables surgical residents to identify various anatomical tissues, articulated tools, and critical structures, such as veins and vessels. Given the firm intraoperative time constraints, it is challenging for surgeons to provide detailed real-time explanations of the operative field for trainees. This challenge is compounded by the scarcity of expert surgeons relative to trainees, making the unambiguous delineation of go- and n…

Optimizing Periodic Operations for Efficient Inland Waterway Lock Management
Julian Golak, Alexander Grigoriev, Freija van Lent, Tom van der Zanden
https://arxiv.org/abs/2506.17743

Optimizing Periodic Operations for Efficient Inland Waterway Lock Management
In inland waterways, the efficient management of water lock operations impacts the level of congestion and the resulting uncertainty in inland waterway transportation. To achieve reliable and efficient traffic, schedules should be easy to understand and implement, reducing the likelihood of errors. The simplest schedules follow periodic patterns, reducing complexity and facilitating predictable management. Since vessels do not arrive in perfectly regular intervals, periodic schedules may lead t…

And if you're wondering what happened to those three Fast Cats.
In January 2024 someone tried to get someone to buy them by putting them up on Facebook Marketplace (yep!) for $15 Million for all three. (98% off original price lol). They were, and likely still are, sitting tied up in Alexandria, Egypt. They were last owned by the Egyptian Government.
At least one of them was essentially unchanged inside since the 1990s. (a Nanaimo Bar for $1.5!)
#BCPoli #BCNDP #FastFerry #Shipbuilding

Synchro-Thermography: Monitoring ~10 mK Facial Temperature Changes with Heartbeat Referencing for Physiological Sensing
Nanami Kotani, Kuniharu Sakurada, Jiayi Xu, Masahiko Inami, Yasuaki Monnai
https://arxiv.org/abs/2506.04748

Synchro-Thermography: Monitoring ~10 mK Facial Temperature Changes with Heartbeat Referencing for Physiological Sensing
Infrared thermography has gained interest as a tool for non-contact measurement of blood circulation and skin blood flow due to cardiac activity. Partiularly, blood vessels on the surface, such as on the back of the hand, are suited for visualization. However, standardized methodologies have not yet been established for areas such as the face and neck, where many blood vessels are lie deeper beneath the surface, and external stimulation for measurement could be harmful. Here we propose Synchro-…

Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL): Immunotherapy and Cell Therapy approaches
Sierra Haile, Benjamin C. Balzer, Emily Egan, Cheryl L. Jorcyk, Nilufar Ali
https://arxiv.org/abs/2506.09293

Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL): Immunotherapy and Cell Therapy approaches
This article focuses on current and emerging therapeutics for CADASIL (Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy). CADASIL is an inherited vascular disease that impairs blood flow in the small cerebral vessels of the brain, leading to strokes and other neurological deficits. The disease is caused by a mutation in the NOTCH3 gene located on chromosome 19. NOTCH3 encodes a transmembrane receptor expressed on vascular smooth muscle cells. In CADASIL…

PyGemini: Unified Software Development towards Maritime Autonomy Systems
Kjetil Vasstein, Christian Le, Simon Lerv{\aa}g Breivik, Trygve Maukon Myhr, Annette Stahl, Edmund F{\o}rland Brekke
https://arxiv.org/abs/2506.06262

PyGemini: Unified Software Development towards Maritime Autonomy Systems
Ensuring the safety and certifiability of autonomous surface vessels (ASVs) requires robust decision-making systems, supported by extensive simulation, testing, and validation across a broad range of scenarios. However, the current landscape of maritime autonomy development is fragmented -- relying on disparate tools for communication, simulation, monitoring, and system integration -- which hampers interdisciplinary collaboration and inhibits the creation of compelling assurance cases, demanded…

A Deep Convolutional Neural Network-Based Novel Class Balancing for Imbalance Data Segmentation
Atifa Kalsoom, M. A. Iftikhar, Amjad Ali, Zubair Shah, Shidin Balakrishnan, Hazrat Ali
https://arxiv.org/abs/2506.18474

A Deep Convolutional Neural Network-Based Novel Class Balancing for Imbalance Data Segmentation
Retinal fundus images provide valuable insights into the human eye's interior structure and crucial features, such as blood vessels, optic disk, macula, and fovea. However, accurate segmentation of retinal blood vessels can be challenging due to imbalanced data distribution and varying vessel thickness. In this paper, we propose BLCB-CNN, a novel pipeline based on deep learning and bi-level class balancing scheme to achieve vessel segmentation in retinal fundus images. The BLCB-CNN scheme uses …

Not being on Facebook to see the daily misinformation-fuelled drama unfold in town is a blessing… and a curse, a little… example eleventy-million-and-one.
"When a bunch of American Naval personnel unloaded U.S. Coast Guard vessels at Clutesi Haven Marina in Port Alberni on Monday, social media sites blew up with rumours about why they were on Vancouver Island and why there were armed vessels making their way down the Alberni Inlet.”
😅😂
#SocialMedia #RumourMill #SmallTown #PortAlberni
https://www.albernivalleynews.com/local-news/us-coast-guard-vessels-cause-concern-at-port-alberni-marina-8098472

#EndFossilFuels #ClimateAction
Fact: Taking a BC Ferry from Metro Vancouver to Vancouver Island is a High CO2 experience, though if it's a full ferry, it's not terrible (~5kgCO2/passenger)
By 2031, BC Ferries will have replaced 18 ferries (big and small!) in 15 years, and nearly all will be 100% electric-ready.
They just announced they're doing the big ships next.
"Built with diesel-battery hybrid propulsion systems and designed with the capability to operate on full electric power in future, the NMVs are expected to significantly reduce greenhouse gas emissions, improve fuel efficiency, and lower underwater radiated noise to better protect marine life. With greater capacity than the vessels they replace, the NMVs will offer more space for vehicles and passengers and upgraded amenities, supporting a more reliable and comfortable travel experience.”
The age of fossil fuels is ending. Any politician or lobbyist who says otherwise is either not paying attention, or bought.
#BCPoli #CanPoli #CdnPoli #ClimateEmergency #SalishSea #BCFerries
https://www.bcferries.com/news-releases/bc-ferries-selects-shipyard-to-construct-four-new-major-vessels

Active Disturbance Rejection Control for Trajectory Tracking of a Seagoing USV: Design, Simulation, and Field Experiments
Jelmer van der Saag, Elia Trevisan, Wouter Falkena, Javier Alonso-Mora
https://arxiv.org/abs/2506.21265

Active Disturbance Rejection Control for Trajectory Tracking of a Seagoing USV: Design, Simulation, and Field Experiments
Unmanned Surface Vessels (USVs) face significant control challenges due to uncertain environmental disturbances like waves and currents. This paper proposes a trajectory tracking controller based on Active Disturbance Rejection Control (ADRC) implemented on the DUS V2500. A custom simulation incorporating realistic waves and current disturbances is developed to validate the controller's performance, supported by further validation through field tests in the harbour of Scheveningen, the Netherla…

Angio-Diff: Learning a Self-Supervised Adversarial Diffusion Model for Angiographic Geometry Generation
Zhifeng Wang, Renjiao Yi, Xin Wen, Chenyang Zhu, Kai Xu, Kunlun He
https://arxiv.org/abs/2506.19455

Angio-Diff: Learning a Self-Supervised Adversarial Diffusion Model for Angiographic Geometry Generation
Vascular diseases pose a significant threat to human health, with X-ray angiography established as the gold standard for diagnosis, allowing for detailed observation of blood vessels. However, angiographic X-rays expose personnel and patients to higher radiation levels than non-angiographic X-rays, which are unwanted. Thus, modality translation from non-angiographic to angiographic X-rays is desirable. Data-driven deep approaches are hindered by the lack of paired large-scale X-ray angiography …

On the new BC Ferries being built in China.
Do we all remember the last time the BC NDP went down the road of “building a shipbuilding industry to build ferries”?
It has its own Wiki, of course.
"In addition to major delays and cost overruns, the ferries never fully met their original specifications, and only operated briefly in a reduced capacity, before being auctioned off at a substantial loss by the subsequently elected BC Liberal Party government.”
No, I'm not thrilled that China, an authoritarian state, is going to be building these ferries. But no BC or Canadian firms bid on the contract. And right now, the expertise in ship building is in China and Europe (the Island and Salish class vessels were built in Europe).
I don't blame the NDP for not repeating the same mistake 30 years later.
And the ferries will still be refit and maintained for their full service life within BC.
#BCPoli #BCNDP #FastFerry #Shipbuilding.
https://en.wikipedia.org/wiki/Fast_ferry_scandal

TritonZ: A Remotely Operated Underwater Rover with Manipulator Arm for Exploration and Rescue Operations
Kawser Ahmed, Mir Shahriar Fardin, Md Arif Faysal Nayem, Fahim Hafiz, Swakkhar Shatabda
https://arxiv.org/abs/2506.18343

TritonZ: A Remotely Operated Underwater Rover with Manipulator Arm for Exploration and Rescue Operations
The increasing demand for underwater exploration and rescue operations enforces the development of advanced wireless or semi-wireless underwater vessels equipped with manipulator arms. This paper presents the implementation of a semi-wireless underwater vehicle, "TritonZ" equipped with a manipulator arm, tailored for effective underwater exploration and rescue operations. The vehicle's compact design enables deployment in different submarine surroundings, addressing the need for wireless system…