omniomni/omni-engineering huggingface dataset:
JDS Atsumi. JDS Atsumi (LST-4101) was the lead ship of the s of the Japanese Maritime Self-Defense Force. She was commissioned on 27 November 1972.

Development and design
The three Atsumi-class tank landing ships (LSTs) had a standard displacement of  and  at full load. They were  overall with a beam of  and a draft of . Ships in the class were powered by two Kawasaki-MAN V8V 22/30 AMTL diesel engines turning two shafts rated at . This gave them a maximum speed of 
.

Vessels of the class carried two Landing Craft Vehicle Personnel (LCVPs). The LCVPs were slung under davits and a traveling gantry crane with folding rails that could be extended over the side handled the two LCMs positioned on the foredeck. The LSTs could carry up 130 troops. The Atsumi class were armed with twin-mounted  guns in a single turret placed each at the bow and aft. The LSTs were equipped with OPS-9 air search. They had a complement of 100 officers and crew.

Construction and career 
She was laid down by Sasebo Heavy Industries on 7 December 1971 as the No. 4101 planned transport ship in 1970 based on the 4th Defense Force Development Plan, launched on 13 June 1972, and launched on 27 November 1972. It was commissioned on the day and was incorporated into the Yokosuka District Force as a ship under direct control.

Engaged in disaster dispatch due to the eruption of Mt. Mihara, Izu Oshima in November 1986.

Engaged in disaster dispatch due to the Great Hanshin Earthquake in January 1995.

On 13 February 1998, she was decommissioned after 25 years. The total itinerary reached 345,823 nautical miles. As a substitute ship,  was incorporated into the Yokosuka District Force from the 1st Transport Corps.

Citations

References

External links

Atsumi-class tank landing ships
Ships built by Sasebo Naval Arsenal
1972 ships
JDS Nemuro. JDS Nemuro (LST-4103) was the third ship of the s of the Japanese Maritime Self-Defense Force. She was commissioned on 27 October 1977.

Development and design
The three Atsumi-class tank landing ships (LSTs) had a standard displacement of  and  at full load. They were  overall with a beam of  and a draft of . Ships in the class were powered by two Kawasaki-MAN V8V 22/30 AMTL diesel engines turning two shafts rated at . This gave them a maximum speed of 
.

Vessels of the class carried two Landing Craft Vehicle Personnel (LCVPs). The LCVPs were slung under davits and a traveling gantry crane with folding rails that could be extended over the side handled the two LCMs positioned on the foredeck. The LSTs could carry up 130 troops. The Atsumi class were armed with twin-mounted  guns in a single turret placed each at the bow and aft. The LSTs were equipped with OPS-9 air search. They had a complement of 100 officers and crew.

Construction and career 
She was laid down by Sasebo Heavy Industries on November 18, 1976 as the No. 4103 planned transport ship in 1970 based on the 4th Defense Force Development Plan, launched on June 16, 1977. It was commissioned on 27 October 1977 and was incorporated into the Yokosuka District Force as a ship under direct control.

On June 27, 1980, a Tu-16 bomber of the Soviet Air Force approached abnormally while sailing about 110 km north of Sado Island, Niigata Prefecture. The Tu-16, which was too close, crashed in front of her. The ship later contained the three bodies of the crew members.

She was engaged in several disaster dispatch activities such as the 1993 Hokkaidō earthquake that occurred on July 12, 1993 and the 2000 eruption of Miyakejima. On May 20, 2005, she was decommissioned.

Her anchor is preserved in front of Nemuro City Hall.

Citations

References

External links

Atsumi-class tank landing ships
Ships built by Sasebo Naval Arsenal
1977 ships
Ōsumi-class tank landing ship (1961). The Osumi-class tank landing ship were a class of transport ships operated by the Maritime Self-Defense Force. It was recommissioned with the donation of three  from the US Navy. Initially, it was categorized as a amphibious landing ship, but the ship type was changed on 1 April 1971.

Description 
The Maritime Self-Defense Force's transport and landing craft unit consists of six general-purpose landing craft (LCUs) (built in Japan by extraterritorial procurement) and mobile landing craft (built in Japan) provided by the US Navy based on the MSA Agreement in 1955 (Showa 30). It all started with the establishment of a fleet of 29 ships. However, all of these were small, had limited transport and landing capabilities, and lacked seakeeping. From this, based on the MSA agreement, three LST-542-class tank landing ships, which had been mothballed in the United States, will be provided.

The LST-542 class was the last model of the , and the displacement is increased by adding one layer of bridge and adding machine guns based on the early model, and it is also the latter model In comparison, the amount of cargo loaded has been reduced to 1,900 tons due to the strengthening of water production capacity. In addition, Ōsumi-class had three davits on each side that could carry landing craft such as mobile landing craft (LCM) and vehicle personnel landing craft (LCVP), but JDS Shiretoko has a bridge structure. There is only one on each side.

Ships in the class

Citations

References 
 
 
 

Amphibious warfare vessels of the Japan Maritime Self-Defense Force
Tank landing ships
LST-542-class tank landing ships of the Japan Maritime Self-Defense Force
Maria Artini. Maria Artini (1894 – 2 August 1951) was an Italian engineer, the first female university graduate in electrical engineering in Italy and the second female graduate of the Milan Polytechnic.

Early life and education 
Artini was born in Milan, Italy, in 1894. She was the daughter of , who was a director of the Civic Museum of Natural History in Milan and professor of mineralogy at the Polytechnic University of Milan where Maria enrolled In 1912. In 1918, she graduated in electrical engineering with a grade of 90/100 becoming the first female electrical engineer in Italy, and only the second woman to graduate from the Polytechnic (after Gaetanina Calvi did so in 1913).

Career 
One year after graduation, Artini began a job at Edison, a Milan-based energy company. There she was promoted to managerial roles and helped to design and construct the country's first very high-voltage (130 kV) power line, in the Brugherio-Parma region. According to Edison, "from 1936 to 1946 she organized and directed Edison's statistics office, later returning [as an executive] to deal with very high voltage [the new 200 kW] power lines."

In an effort to help other women in technical fields, in 1948 Artini suggested the formation of an association of female professionals and even organized a series of meetings with her Milanese and Turin colleagues. Although she died before it could be realized, the AIDIA (Italian Association of Women Engineers and Architects) was born on January 26, 1957, founded by engineer Emma Strada (its first president), Anna E. Armor, Adele Racheli and the architect Vittoria Ilardi. According to Altomare, the association continues today and "boasts a path studded with successes, awards and honors." Artini is still credited for her "brilliant idea" of forming the association.

Personal life 
Artini married Leonardo Maggi who is known to have been a benefactor of Milan's Institute of the Blind. The Institute's museum houses a photograph of Artini in its collection.

Maria Artini died on 2 August 1951, at the age of 57.

References 

1894 births
1951 deaths
Italian electrical engineers
Engineers from Milan
Polytechnic University of Milan alumni
20th-century Italian engineers
20th-century Italian women engineers
Joyce Poon. Joyce Poon is Professor of Electrical and Computer Engineering at the University of Toronto and Director of the Max Planck Institute of Microstructure Physics, where her research focuses on developing new optical devices for applications in neurotechnology. She is also an honorary professor at the Technische Universität Berlin. She is a Fellow of Optica (formerly the Optical Society), and has been serving as a Director-At-Large for the society since January 2021.

Early life and education 
Poon was born in Hong Kong and grew up in Toronto. She obtained a B.A.Sc. in engineering from the University of Toronto in 2002 and an M.S. in Electrical engineering from California Institute of Technology in 2007. She stayed at Caltech to carry out her PhD under the supervision of Professor Amnon Yariv. Her thesis studied ways to control slow light in optical waveguides and was awarded the Milton and Francis Clauser Doctoral Prize. During her graduate studies, she founded Caltech's Student Chapter of Optica.

Research and career 

In 2007, Poon moved back to the University of Toronto, where she is now Professor of Electrical and Computer Engineering. Her early research continued investigating waveguide resonators. While at Toronto, she built a research team focused on studying silicon-based integrated photonic technologies for applications in telecommunications. Her research group also focuses on neurotechnology, and investigate how integrated photonic devices can be used to develop new brain imaging techniques.

Poon became an honorary professor at the Faculty of Electrical Engineering and Computer Science at Technische Universität Berlin in 2018. She is also principal investigator at the Neurotech Alliance and the Center for Advancing Neurotechnological Innovation to Application (CRANIA) at the University of Toronto.

Awards and honours 
Poon was elected as a Fellow of  Optica in 2018 "for outstanding contributions to the research and development of silicon-based integrated optics, including microresonators, electro-optic modulators and integrated hybrid photonics". She is a Director-At-Large at Optica.

She was awarded the University of Toronto's McCharles' Prize for Early Career Distinction in 2013, and named one of the world's Top 35 IT innovators under 35 by the MIT Technology Review in 2012. Poon is a two-time recipient of the IBM Faculty Award (2010, 2011), and also received the Ontario Ministry of Research and Innovation Award (2009) and a University Faculty Award from the Natural Sciences and Engineering Research Council (2008).

References 

Living people
Women in optics
University of Toronto alumni
California Institute of Technology alumni
Academic staff of the University of Toronto
21st-century women scientists
21st-century women engineers
Fellows of Optica (society)
Year of birth missing (living people)
Max Planck Institute directors
Defected ground structure. In printed circuit board manufacturing, a defected ground structure (DGS) is a purposefully-created defect on the ground plane of a printed microstrip board. It is typically created in the form of an etched-out pattern on the ground plane. DGS is a simplified form of an electromagnetic band gap (EBG) structure. This EBG is a periodic pattern featuring a band-stop property in microstrip transmission line and circuit applications, but the DGS comprises a single defect or a very limited number of defects with periodic/aperiodic configurations.

History 
Kim et al. first conceived a limited form of EBG and coined the term ‘DGS’. They used a single unit of dumbbell-shaped defect beneath a microstrip line to use its stop-band characteristics within which it impedes the propagation of electromagnetic (EM) down the line over a range of frequencies. The compact feature and ease of implementation made it popular and several other shapes of DGS evolved very fast for various microwave circuit applications. Printed circuit filter is one of them. Apart from that, DGS has also been used in the circuits of an amplifier, rat-race coupler, branch-line coupler, Wilkinson power divider, etc. DGS was also employed underneath the feed lines to integrated microstrip antenna in order to filter out any unwanted harmonics.

Ideas for antenna applications 

A new concept of its application to microstrip antenna was first reported in 2005 by Guha et al. The main focus was to suppress the cross-polarized radiations in a circular microstrip patch. DGS was strategically used to weaken the cross-pol generating higher-order TM21 mode. The important and necessary condition is that the deployed DGS should not influence or disturb the main resonance, i.e. the primary radiation mode. That work indeed introduced a non-resonant DGS and proved the concept. Subsequently, several advancements both in DGS type, geometry, and cross-polar performance have been achieved.

Yet another idea of patch-DGS integration has advanced the microstrip antenna array design. The issue of mutual coupling among the array elements can be reduced by integrating simple DGS- first reported in 2006. This technique has been matured to address the practical issue of "scan blindness" of large arrays.

This DGS-technique has been proved to be a very useful commercially viable tool to minimize two major issues like scan blindness and cross-polar radiations in phased arrays. New generation airborne and space-borne radars are now being developed using this DGS technology.

References

Antennas
Microwave transmission
Pont de l'Île. The pont de l'Île is a covered bridge near the municipality of Clerval, Quebec, Canada. It connects an island, L'Île-Nepawa, in Lake Abitibi to the mainland.

The single-lane bridge is of Lattice truss bridge design. This design was modified by the Quebec Ministry of Colonisation and was used for more than 500 covered bridges in Quebec. Thirty-four covered bridges were built in Abitibi, during the colonisation of the region. Today fewer than half of them are extant.

Built in 1946, a metal pillar was added in 1997. In 2012 the bridge was restored, including a new roof, new woodwork, and it was painted red, having been beige.

The weight capacity is 12 tonnes. It does not benefit from any provincial or municipal protection.

See also 

 List of covered bridges in Quebec

References 

Buildings and structures in Abitibi-Témiscamingue
Bridges completed in 1946
Covered bridges in Canada
Road bridges in Quebec
Nozawa X-1. The Nozawa X-1 was intended as a Japanese competitor in the early 1940s two seat civil aircraft market but only one had been built before the Pacific War ended civil activities. The prototype was employed as a trainer and glider tug.

Design and development

The Nozawa  Aviation Research Institute was founded in 1939. Their first aircraft, the Nozawa Z-1,was just a copy of the two seat Taylorcraft J-2 Cub but their second, the two seat Nozawa X-1, was original and incorporated advanced features. Its first flight, piloted by Suetomi Kumano, was made in December 1941.

It had a low, cantilever, inverted gull wing with a wooden structure covered with a mixture of plywood and fabric. One advantage of the inverted gull form was that fixed landing legs, placed at the lowest points of the wing, were short. The legs of the X-1 were faired single struts with wheels under large fairings. The tailwheel was not faired.

The X-1's rounded fuselage was also wooden, with a semi-monocoque structure. The Pobjoy R radial engine came with its own cowling and the fuselage nose blended smoothly into it. There were two cockpits in tandem under a long, multipane transparency, starting ahead of the wing leading edge and ending near the trailing edge.

Operational history

In 1941 the X-1 was intended to be competitive with other two-seaters world wide and there were plans for variants with other engines, but these ambitions ended whenr Japan attacked the United States base in Pearl Harbor. No more were built, though the prototype remained active as a trainer and glider tug at the Furukawa Centre.

Specifications

References

Low-wing aircraft
Single-engined tractor aircraft
1940s Japanese civil aircraft
Lufthansa Cargo Flight 527. Lufthansa Cargo Flight 527 was a Lufthansa Cargo flight scheduled to fly from Rio de Janeiro in Brazil to Dakar, the capital of Senegal. On 26 July 1979, shortly after take-off in Rio, the Boeing 707 flew into a slope and crashed. All 3 crew members, consisting of the captain, the first officer, and a flight engineer died; there were no survivors. The principal cause of the crash was the failure of air traffic controllers to pay the necessary attention to each aircraft and ensure the necessary attention to rising terrain.

Accident 
The aircraft was a cargo variant of the Boeing 707 (707-330C).  Flight 527 departed Rio de Janeiro/Galeão International Airport at 21:27 UTC and was instructed by air traffic control (ATC) to climb to  and to turn toward the Caxias VHF omnidirectional range (VOR).  Approach control requested the pilot to increase their speed.  The crew increased the aircraft's speed to  as instructed despite the maximum speed being  when the altitude is less than .  After communicating his instructions, the controller monitoring Flight 527 turned to focus on other flights near Rio, and was unaware of Flight 527 overspeeding.

By the time the controller resumed communications with Flight 527, he saw that the flight was further north than expected due to its greater speed. He then radioed the crew: "Lufthansa, turn right heading 140, just now, over. Lufthansa 527, turn right heading 140 and climb without restrictions." The crew responded: "Roger, leaving 2 thousand, LH 527, turning right heading 140."

Shortly after this transmission, the Ground Proximity Warning System (GPWS) activated and at 21:32 UTC the aircraft flew against a bunch of trees and crashed into a mountain, leaving a trail of debris  long.

Investigation 
The main cause was found to be the failure of Brazilian air traffic controllers to pay the necessary attention to each aircraft and thus both stagger the aircraft among themselves and ensure the necessary distances to rising terrain.

The improperly high speed of the Boeing 707 was both due to faulty instructions and monitoring by the controller, as well as the crew passively accepting the dangerous instructions.  Normally, the release includes a departure route to a so-called clearance limit, up to which the aircraft is allowed to fly at most. Even when asked by the pilots, air traffic control gave only an unclear answer. In the clearance for LH527 this information was missing, so the crew continued to fly on the set course instead of asking air traffic control for new instructions.  For almost all of the last two minutes, there was no communication between LH527 and air traffic control.

See also

Prinair Flight 277

References 

Boeing 707
Transport in Rio de Janeiro (city)
Aviation accidents and incidents in 1979
Lufthansa
Aviation accidents and incidents in Brazil
Airliner accidents and incidents involving controlled flight into terrain
Airliner accidents and incidents caused by pilot error
Aviation accidents and incidents caused by air traffic controller error
Accidents and incidents involving the Boeing 707
Lufthansa accidents and incidents
Linda Bushnell. Linda Grace Bushnell is an American expert on networked control systems who works as a research professor of electrical and computer engineering at the University of Washington and as a program director for the Civic Innovation Challenge (CIVIC) and Cyber-Physical Systems (CPS) programs at the National Science Foundation.

Education and career
Bushnell majored in electrical engineering at the University of Connecticut, where she earned a bachelor's degree in 1985 and a master's degree in 1987. After earning a second master's degree in mathematics at the University of California, Berkeley in 1989, she completed a Ph.D. in electrical engineering and computer science at UC Berkeley in 1994. Her dissertation, Motion Planning for Wheeled Nonholonomic Systems, was supervised by Shankar Sastry. She also has an MBA, earned in 2010 through the Foster School of Business at the University of Washington.

After completing her Ph.D., she worked as a program manager in the Army Research Office of the United States Army Research Laboratory from 1994 to 2000, while also holding an adjunct associate professor position at Duke University. She moved to the University of Washington in 2000.

Recognition
Bushnell is a Fellow of the IEEE and a Fellow of the International Federation of Automatic Control, elected in 2020 "for contributions to the analysis and design of networked control systems".

References

External links

Year of birth missing (living people)
Living people
American electrical engineers
American women engineers
American control theorists
University of Connecticut alumni
UC Berkeley College of Letters and Science alumni
University of Washington alumni
University of Washington faculty
Fellows of the International Federation of Automatic Control
Fellows of the IEEE
American women academics
UC Berkeley College of Engineering alumni
21st-century American women
Shane Wighton. Shane Wighton (born September 15, 1991) is an American engineer best known for his YouTube channel, Stuff Made Here, an engineering-focused channel where Wighton builds various creative inventions. Wighton launched the channel in March 2020, and as of August 2024, Stuff Made Here has over 4.5 million subscribers and over 298 million total views. With average views per video exceeding 9 million, the videos are among the most-watched engineering project content on the platform.

Wighton's YouTube channel, Stuff Made Here, was nominated for the Technology Subject Award at the 10th Streamy Awards.

Content 
As of August 2024 his most viewed video, entitled "Moving hoop won't let you miss", has over 28 million views. In the video, he creates a basketball hoop that uses various motors to adjust its angle within 0.6 seconds in order for the basketball to always go into the basketball net. His first variation of the net was not built using electronics, but utilizes a curved backboard in order to redirect the ball into the net from most angles. 

During the COVID-19 pandemic, he built a robot that cuts hair using various sensors and scissors. For Halloween, he converted the hair-cutting machine into a machine that maps images and carves intricate designs onto pumpkins. 

On June 2, 2020, he posted a video where he created a golf-club that automatically adjusts to achieve certain distances and club types. 

Wighton has also posted two videos where he created multiple versions of baseball bats that utilize blank cartridges and pistons to try to beat the world home-run distance record. 

On February 15, 2021, Wighton posted a video in which he created a pool table and cue stick that analyses every potential shot and projects the best option on the table itself which one player can then attempt. The cue stick will tilt up, down, left, and right to compensate for bad aiming by a player in order to attempt the shot with a high level of accuracy. 

In April 2021, Wighton made a "robotic chainsaw" using a chainsaw and a Tormach ZA6 Robot.

In May 2021, Wighton designed two "unpickable" custom locks, and sent them to lockpicking YouTuber LockPickingLawyer as a challenge. In a response video, LockPickingLawyer picked the first lock in exactly 60 seconds, and the second lock in 52 seconds using pliers and a mallet.

Professional life 
Wighton attended the University of North Carolina at Charlotte, where he received a bachelor’s degree in mechanical engineering and a master’s degree in computer science. Wighton formerly led an engineering team at Formlabs that makes 3D printers that utilize stereolithography and selective laser sintering technology. He is an inventor with five patents and 13 pending applications.

Shane is married with children. His wife is a frequent guest in his videos.

Gallery

References 

American YouTubers
Living people
YouTube channels launched in 2020
1991 births