This work presents an efficient method for designing submarine cable routes using online seafloor classification based on sidescan sonar scanlines, collected by autonomous underwater vehicle (AUV). Currently, the are designed manually experienced experts. Online and automated route planning AUV can improve efficiency of construction cables. Sidescan is a device commonly used mapping detecting obstacles. An equipped with to gather scanlines perform mapping. As operates, gathered analyzed...

Abstract Traditionally, learning among young students has taken place within structured, physical classroom settings. However, the emergence of distance introduced a diverse range methods, including online, hybrid, and blended approaches. When COVID-19 pandemic led to extended delays in in-person instruction, use educational technologies such as asynchronous videos online platforms were deployed deliver mathematics curricula aligned with Common Core State Standards (CCSS), though best...

User involvement in the process of developing information systems has long been known to be a critical component eventual success. This study examines importance building an acceptable foundation for interactions between stakeholders project's outcome. A model is developed and empirically tested via survey that explains relationship foundation, amount user-related risk, project performance. The partnering activities used build prove significant should considered as part each development project.

Telecom-band single nanowire (NW) light-emitting diodes (LEDs) on silicon platforms are promising for use as future on-chip light sources. To realize such an LED, we grew p-i-n junction InP/InAs NWs by the vapor-liquid-solid method and used them to fabricate NW-LED composites Si wafers. Using a micro-photoluminescence system current injection probe setup, were able estimate optical electrical properties. In addition, demonstrated dynamic signal modulation capabilities of our device through...

The combination of hybrid nanowire photodetector on silicon photonic crystals has the potential to be both highly sensitive and ultrafast. A p-i-n was integrated into a crystal via nanomanipulation technique been successfully implemented as photodiode chip with Al:ZnO transparent electrode. can detect laser light through coated input waveguide is capable measuring enhanced photocurrent. In addition, measurement photocurrent in cone by nanoantenna also conducted. Our results reveal prospects...

• Self-efficacy and trait anxiety had significant direct effects on students' mind-wandering Self-efficacy, anxiety, task-value beliefs, online engagement The frequency of partially mediates the relationship between self-efficacy Learning with Zoom is fundamentally different from course grounded in pedagogical learning design principles Adopting that target social cognitive, behavioral factors broadly may reduce to mind-wander while remotely through

Advanced materials and new lightweighting technologies are essential for boosting the fuel economy of modern automobiles while maintaining performance safety. A novel approach called subcritical gas-laden pellet injection molding foaming technology (SIFT) was performed to produce foamed polyamide/glass fiber (PA/GF) composite. Gas-laden pellets loaded with nitrogen (N2) were produced by introducing sub-critical N2 into PA/GF composite during compounding using a twin-screw extruder equipped...

Unmanned Underwater Vehicles (UUVs) are popular tools nowadays in marine exploration and oceanographic research. How to navigate an UUV unknown or unstructured environments without long baseline short information always a challenging problem. Side Scan Sonar (SSS) common payloads on UUVs for navigation environment detection. This study proposes real time SSS seafloor mapping method combining the motion observation model of sonar localize UUVs. The working principle SSS, footprint region...

This study is part of a series in situ design-based research investigations within large public university California, assessing undergraduate science instruction while distance learning.It has become increasingly important to identify sustainable learning alternatives support online teaching and integrating educational technologies informed by evidence-based practices pedagogical experience design (LXD).Consequently, this efficacy aimed test the effectiveness embedded video questions...

A small-size Autonomous Surface Vehicle (ASV) is designed to perform autonomous survey missions mainly in river and coastal areas. To do station keeping surf zone areas, the ASV have a good heading performance specific range of tidal currents period. GPS signals are utilized navigate into way-point area, then wave crest measurement system using stereo cameras on developed monitor fields surrounding ASV. facilitate field monitoring, images were calibrated rectified. The corresponding epipolar...

This paper aims to an efficient method for submarine cable route design using online seafloor classification from sonar scanlines conducted by autonomous underwater vehicle (AUV). Currently, the works are carried out experienced surveyors and engineers hand. An AUV with automated planning can improve efficiency construction. Side scan is a common device used mapping obstacles detection. In order implement mapping, equipped side utilized gather scanlines. Scanlines analyzed on fly classify...

This study proposes an online seafloor obstacle detection method using sonar scanlines for submarine cable construction application. It is necessary to find out the obstacles, such as natural or linear artificial reefs and of service cables pipelines on seabed along proposed corridors route future design jobs. And system almost popular tool this kind survey. The sidescan (SSS) produces image representation by backscattering reflection signals show morphology features. A feature searching...

We present the design of a noncontact high-torque magnetic coupler in context high-speed (> 3600 r/min) fully superconducting rotating electric machine. The is an essential component for machines where both stator and rotor are enclosed within common cryostat. eliminates need shaft vacuum seals, which would otherwise be needed if conventional torque tube were used. cooled by natural convection from stator, similarly eliminating cryogen transfer coupling used rotors. satisfies to transmit...

The work is a preliminary study of autonomous underwater vehicle (AUV) localization using ocean acoustic tomography (OAT) sensor nodes. OAT method to measure the current velocity and temperature fields time-of-flight signals. These nodes broadcast signals periodically in area interest. Each node consists surface buoy, an transceiver, GPS module processing unit. An was installed on AUV, acting as moving addition seafloor moored Since signal not always available chip scale atomic clock...

Dynamic Partial Reconfiguration (DPR) allows the targeted FieldProgrammable Array (FPGA) to selectively update portions of programmable logic while remainder fabric stays active. Previously, designers were required manually create DPR systems with minimal support from Computer Aided Design (CAD) tools. Xilinx ® ’s PlanAhead TM software now automates much system generation process for ISE-based systems. This paper presents EuTOPIA (EDK TO Implementation Automation), a CAD tool that extends...

The use of machine learning (ML) model as digital-twins for reduced-order-modeling (ROM) in lieu system codes has grown traction over the past few years. However, due to complex and non-linear nature nuclear reactor transients well large range tasks required, it is infeasible a single ML generalize across all tasks. In this paper, we incorporate issue specific digital-twin models with ensembles enhance prediction outcome. ensemble also utilizes an indirect probabilistic tracking method...

Abstract The effect of an in‐mold static mixer on orientation fiber‐reinforced polypropylene (PP) was explored within the injection molding process. Several mold geometries and helical designs were assessed via simulation to identify mixing ability potential fiber orientation. It found that mixers runner segment could successfully mix polymer randomize fibers but alignment reduction quickly recovered. Injection experiments carried out verify these simulations using one geometry case. Fiber...