Printable Flexible Robots for Remote Learning

The COVID-19 pandemic has revealed the importance of digital fabrication to enable online learning, which remains a challenge for robotics courses. We introduce a teaching methodology that allows students to participate remotely in a hands-on robotics course involving the design and fabrication of robots. Our methodology employs 3D printing techniques with flexible filaments to create innovative soft robots; robots are made from flexible, as opposed to rigid, materials. Students design flexible robotic components such as actuators, sensors, and controllers using CAD software, upload their designs to a remote 3D printing station, monitor the print with a web camera, and inspect the components with lab staff before being mailed for testing and assembly. At the end of the course, students will have iterated through several designs and created fluidically-driven soft robots. Our remote teaching methodology enables educators to utilize 3D printing resources to teach soft robotics and cultivate creativity among students to design novel and innovative robots. Our methodology seeks to democratize robotics engineering by decoupling hands-on learning experiences from expensive equipment in the learning environment.Comment: 9 pages, 4 figures, peer reviewed and presented paper at American Society of Engineering Education, April 22-23rd, 2022 - Wentworth Institute of Technolog

Nautical Research Platform for Water-Bound Experiments

Conducting research in lakes and rivers requires large crews and heavy-duty equipment, making even simple tests more costly and time consuming. Newer research methods are evolving constantly as new technology enables more precise and accessible experiments to be conducted. The need for simple execution of water-bound experiments exists and must be addressed to aid our understanding of these environments. We at the Microgravity Undergraduate Research Team have taken our previous research in autonomous Unmanned Surface Vehicles (USVs) and applied our efforts to relieving this problem. Our current research aims to provide a universal platform for research and experiments to be conducted in lakes and rivers, where we can then expand our efforts to more broad applications. The design allows for remote-control navigation by one user and easy portability. To address precision in experimentation, we have integrated autonomous GPS waypoint navigation which removes user error in sensitive measurements. The most important factor in its design is modularity; the ability to accommodate a wide range of equipment for research. Our platform succeeds in making water-bound experiments more accessible and more precise for a multitude of potential applications

The Changing of the Guard: The New American Labor Leader

This article analyzes recent changes in the leadership of international unions. There has been a trend toward leaders who are lifetime bureaucrats rather than rank-and-file members with charisma. This change toward more technocratic leadership is due to the different environment and new challenges that labor currently faces. The United Mine Workers is a good example of a union that has had many changes in the type of person who has become president, from the labor giant John L. Lewis to the 33-year-old lawyer Richard Trumka. The United Auto Workers is an example of a union whose leadership has been consistently drawn from the union hierarchy. The AFL-CIO has made a change in leadership from George Meany to the labor bureaucrat Lane Kirkland. There will probably be an increase in the number of women and minorities in top leadership positions in unions, but this will be a gradual increase.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/66627/2/10.1177_000271628447300107.pd

The Long-Baseline Neutrino Experiment: Exploring Fundamental Symmetries of the Universe

The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay --- these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our Universe, its current state and its eventual fate. The Long-Baseline Neutrino Experiment (LBNE) represents an extensively developed plan for a world-class experiment dedicated to addressing these questions. LBNE is conceived around three central components: (1) a new, high-intensity neutrino source generated from a megawatt-class proton accelerator at Fermi National Accelerator Laboratory, (2) a near neutrino detector just downstream of the source, and (3) a massive liquid argon time-projection chamber deployed as a far detector deep underground at the Sanford Underground Research Facility. This facility, located at the site of the former Homestake Mine in Lead, South Dakota, is approximately 1,300 km from the neutrino source at Fermilab -- a distance (baseline) that delivers optimal sensitivity to neutrino charge-parity symmetry violation and mass ordering effects. This ambitious yet cost-effective design incorporates scalability and flexibility and can accommodate a variety of upgrades and contributions. With its exceptional combination of experimental configuration, technical capabilities, and potential for transformative discoveries, LBNE promises to be a vital facility for the field of particle physics worldwide, providing physicists from around the globe with opportunities to collaborate in a twenty to thirty year program of exciting science. In this document we provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess.Comment: Major update of previous version. This is the reference document for LBNE science program and current status. Chapters 1, 3, and 9 provide a comprehensive overview of LBNE's scientific objectives, its place in the landscape of neutrino physics worldwide, the technologies it will incorporate and the capabilities it will possess. 288 pages, 116 figure

Microsc Microanal

Abstract A microcompressor is a precision mechanical device that flattens and immobilizes living cells and small organisms for optical microscopy, allowing enhanced visualization of sub-cellular structures and organelles. We have developed an easily fabricated device, which can be equipped with microfluidics, permitting the addition of media or chemicals during observation. This device can be used on both upright and inverted microscopes. The apparatus permits micrometer precision flattening for nondestructive immobilization of specimens as small as a bacterium, while also accommodating larger specimens, such as Caenorhabditis elegans, for long-term observations. The compressor mount is removable and allows easy specimen addition and recovery for later observation. Several customized specimen beds can be incorporated into the base. To demonstrate the capabilities of the device, we have imaged numerous cellular events in several protozoan species, in yeast cells, and in Drosophila melanogaster embryos. We have been able to documen

Origami Robot for Explosive Ordinance Disposal (OREOd)

The demining of landmines using drones is challenging; air-releasable payloads are typically non-intelligent (e.g., water balloons or explosives) and deploying them at even low altitudes (~6 meter) is inherently inaccurate due to complex deployment trajectories and constrained visual awareness by the drone pilot. Soft robotics offers a unique approach for aerial demining, namely due to the robust, low-cost, and lightweight designs of soft robots. Instead of non-intelligent payloads, here, we propose the use of air-releasable soft robots for demining. We developed a full system consisting of an unmanned aerial vehicle retrofitted to a soft robot carrier including a custom-made deployment mechanism, and air-releasable, lightweight, and untethered soft hybrid robots with integrated electronics that incorporate various pneumatic actuators. We demonstrate a deployment cycle in which the drone drops the soft robotic hybrid from an altitude of 2 m meters and after which the robot approaches a dummy landmine. By deploying soft robots at points of interest, we can transition soft robotic technologies from the laboratory to real-world environments

Technology-based approaches to managing cotton bollworm in Bt Cotton

The bollworm (Helicoverpa zea), also known as the corn earworm, is considered the most economicallydamaging caterpillar pest in Texas and Mid-southern U.S. cotton production. The use of Bt expressing cottonvarieties has allowed for successful control of lepidopteran pests such as the tobacco budworm (Chlorideavirescens) for over two decades and led to the complete eradication of pink bollworm (Pectinophoragossypiella) in the U.S. Despite successfully introducing Bt cotton varieties for these pests, injury frombollworm can still be observed in all Bt cotton varieties, though injury is reduced, especially when multiple Bt toxins are expressed.Chase Floyd (University of Missouri); David Kerns (Texas A and M); Whitney Crow, Don Cook, Tyler Towles, Jeff Gore, Angus Catchot and Fred Musser (Mississippi State University); Ben Thrash, Nick Bateman, Gus Lorenz and Glenn Studebaker (University of Arkansas); Sebe Brown and Scott Stewart (University of Tennessee)