omniomni/omni-engineering huggingface dataset:
Downtown South. Downtown South is a proposed 140-acre (57 ha) real estate development by Kane Realty located to the south of downtown Raleigh, North Carolina. Anchored by a soccer stadium and VR center, the US$2.2 billion project could feature as many as 23 high-rise structures with office, residential, hotel, and retail spaces. The first phase is expected to start construction in 2023 with the construction of a 24-story apartment building and 27-story office tower. Later phases could include buildings as tall as 40 stories.

In the event Raleigh wins the bid for the 2029 World University Games, it is likely that some events will be hosted at the Downtown South development. In addition, office space, hotel space, conference rooms, and the VR facility may be used for supporting infrastructure.

Sports and entertainment
Across its 140 acres, the Downtown South is expected to be home to a soccer practice facility, 20,000-seat stadium, small outdoor amphitheater, and an indoor VR Center.

Steve Malik began to collaborate with Kane Realty in 2018 hoping to attract Major League Soccer (MLS) to Raleigh. However, the MLS ultimately chose Charlotte, North Carolina, delaying the Downtown South development's construction. Despite the bid falling through, Malik still hopes to relocate the North Carolina FC and North Carolina Courage to the stadium upon its completion, but the stadium is on hold until further notice.

Delays and lawsuits
The Downtown South development was paused due to the Covid-19 Pandemic, affecting project finances, zoning requests, and blueprints.

Many citizens were concerned about the displacement and harm the development could cause to the community. After the MLS chose Charlotte for the location of its 30th team, many doubted the continued need for the project. Raleigh City Council denied the many proposals and requests, believing the rezoning application "disregarded equity and fairness." After a series of council meetings, the project was eventually approved on December 15, 2020, though the stadium was later put on hold.

After this approval, Kane Realty bought the remaining land needed for the project, which later resulted in a lawsuit being filed against the project on March 30, 2021, by a small business located on the site A hearing related to the lawsuit is scheduled before the NC Court of Appeals in February 2023.

Downtown South Music Venue

The 3,500-seat entertainment venue will have an indoor ballroom and a rooftop entertainment space. It will have 70,000 square feet and will begin construction in 2023.

1727 S Saunders St

1727 S Saunders St will be the first high-rise structure at Downtown South. Expected to start construction in 2023, the 24-story structure will include 370 residential units, 453 parking spaces, and approximately 14,000 square feet of retail space.

References

Raleigh, North Carolina
DronesVision. DronesVision is a Taiwanese arms manufacturer, specializing in militarized unmanned aerial vehicles and anti-UAV technologies.

History 
The company was established in 2010. In 2014, they launched their first product, the SKYNET anti-drone electronic warfare system. In 2018, they launched the AR-1, a drone capable of carrying and using AR-style rifles. In 2022, they launched the Revolver 860, a drone capable of delivering 8 60mm mortar rounds.

Customers

Taiwan 
DronesVision has supplied anti-drone systems to the Taiwanese military.

Ukraine 
In 2022, Revolver 860 drones sold to Poland were transferred to Ukraine for use during the 2022 Russian invasion of Ukraine.

See also 
 Aerovironment
 Defense industry of Taiwan
 Thunder Tiger

References

External links
 

Unmanned aerial vehicle manufacturers of Taiwan
Defence companies of Taiwan
2015 establishments in Taiwan
Companies based in Keelung
Taiwanese companies established in 2015
Taiwanese brands
Talent scheduling. Talent scheduling represents a complex optimization challenge within the fields of computer science and operations research, specifically categorized under combinatorial optimization. Consider, for example, a case involving the production of multiple films, each comprising several scenes that necessitate the participation of one or more actors. Importantly, only one scene can be filmed per day, and the remuneration for the actors is calculated on a daily basis. A critical constraint in this problem is that actors must be engaged for consecutive days; for instance, an actor cannot be contracted for filming on the first and third days without also being hired on the intervening second day. Furthermore, during the entire hiring period, producers are obligated to compensate the actors, even on days when they are not actively participating in filming. The primary objective of talent scheduling is to minimize the total salary expenditure for the actors by optimizing the sequence in which scenes are filmed.

Mathematical formulation 
Consider a film shoot composed of  shooting days and involving a total of  actors. Then we use the day out of days matrix (DODM)  to represent the requirements for the various shooting days. The matrix with the  entry given by:

Then we define the pay vector , with the th element given by  which means rate of pay per day of the th actor. Let v denote any permutation of the n columns of , we have:

 is the permutation set of the n shooting days. Then define  to be the matrix  with its columns permuted according to , we have:
 for 
Then we use  and  to represent denote respectively the earliest and latest days in the schedule  determined by a which require actor . So we can find actor  will be hired for  days. But in these days, only  days are actually required, which means  days are unnecessary, we have:

The total cost of unnecessary days is:

 will be the objective function we should minimize.

Proof of strong NP-hardness
It can be proved that the talent scheduling problem is NP-hard by a reduction to the optimal linear arrangement(OLA) problem. Even if we restrict the problem by requiring that each actor is needed for just two days and all actors' salaries are 1, it's still polynomially reducible to the OLA problem. Thus, this problem is unlikely to have pseudo-polynomial algorithm.

Integer programming
The integer programming model is given by:

In this model,  means the earliest shooting day for talent ,  is the latest shooting day for talent ,  is the scheduling for the project, i.e.

References

Optimal scheduling
NP-complete problems
Z. Jane Wang. Zheng Jane Wang is a Chinese and American physicist known for her research on insect flight. She is a professor of physics and of mechanical and aerospace engineering at Cornell University.

Education and career
Wang studied physics at Fudan University, graduating in 1989, and completed a Ph.D. in physics at the University of Chicago in 1997.

After postdoctoral research at the University of Oxford and the Courant Institute of Mathematical Sciences, she became an assistant professor at Cornell University in 1999, in the Department of Theoretical and Applied Mechanics. She was promoted to associate professor in 2004, and moved to mechanical and aerospace engineering as a full professor in 2009. In 2011 she added an affiliation as a professor of physics.

Recognition
Wang was named a Fellow of the American Physical Society (APS) in 2014, after a nomination from the APS Division of Fluid Dynamics, "for fundamental contributions to our understanding of insect flight through simulations of hovering, elucidation of unsteady forces, development of computational tools, and analyses of flight efficiency, stability, and control". She was given a Simons Fellowship in Mathematics and Theoretical Physics in 2020.

A chamber music album by Elena Ruehr, Jane Wang Considers the Dragonfly, is named for Wang.

References

External links
Home page

Year of birth missing (living people)
Living people
American physicists
American women physicists
Chinese physicists
Chinese women physicists
Fluid dynamicists
American aerospace engineers
American women engineers
Chinese aerospace engineers
Women aerospace engineers
Fudan University alumni
University of Chicago alumni
Cornell University faculty
Fellows of the American Physical Society
20th-century Chinese women engineers
21st-century Chinese women engineers
20th-century Chinese engineers
21st-century Chinese engineers
Thomas Neumann. Thomas Neumann (born 1977) is a German computer scientist and full professor for Data Science and Engineering at the Technical University of Munich (TUM).

Education and career 
Thomas Neumann finished his studies in business informatics, at the University of Mannheim in 2001. He received his doctor's degree in computer science under the supervision of Guido Moerkotte, in 2005,  and then worked as a senior researcher at the Max Planck Institute for Computer Science in Saarbrücken, with Gerhard Weikum. During this time, Neumann developed RDF-3X, a system for graph databases. He habilitated in 2010 at Saarland University. In the same year, he joined the group for database systems at TUM under Alfons Kemper as associate professor. In 2017, he became a full professor for Data Science and Engineering, also at TUM.

Research 
His research areas are query optimisation and efficient query processing by just-in-time compilation.
As part of this research, he developed the main memory database system HyPer, which was sold to Tableau Software in 2016, and its successor system Umbra. He was awarded the Gottfried Wilhelm Leibniz Prize by the German Research Foundation for his work on HyPer.

External links 

 Homepage of Thomas Neumann
 Publications indexed in the Digital Bibliography & Library Project (DBLP)
 HyPer: Hybrid OLTP&OLAP High-Performance Database System
 Umbra: A Disk-Based System with In-Memory Performance

Awards 
 2021 VLDB Test of Time Award
 2021 ICDE Ten-Year Influential Paper Award
 2020 Gottfried Wilhelm Leibniz Prize
 2016 ERC Consolidator Grant
 2014 Early Career Award of the VLDB Conference
 1994 International Olympiad in Informatics gold medal

References

German computer scientists
Academic staff of the Technical University of Munich
Gottfried Wilhelm Leibniz Prize winners
1977 births
Living people
Database researchers
Intermatic. Intermatic Incorporated is an American manufacturer of time switches headquartered in Spring Grove, Illinois. Intermatic was founded in 1891 in Chicago, Illinois as the International Register Company  to produce fare registers.

The company's founder was A.H. Woodward who held several patents on fare registers (mechanical devices for recording passenger ticket and ridership).

The company introduced its first lighting timer in 1945, and today makes timing and control systems for line and low voltage systems used in residential, commercial, government, and industrial systems.

The company sells the Time-All line of timers for consumer applications.

References 

Electronics companies established in 1891
1891 establishments in Illinois
Companies based in McHenry County, Illinois
Manufacturing companies based in Illinois
Zhen Jane Wang. Zhen Jane Wang is a Chinese-Canadian signal processing researcher whose research includes work on statistical signal processing, image fusion, digital video fingerprinting, biological network inference, and deep learning. She is a professor in the Department of Electrical and Computer Engineering at the University of British Columbia, and the editor-in-chief of IEEE Signal Processing Letters.

Education and career
Wang graduated from Tsinghua University in 1996. She went to the University of Connecticut for graduate study in electrical engineering, earning a master's degree in 2002 and completing her Ph.D. in 2002. Her doctoral supervisor there was Peter K. Willett.

After postdoctoral research at the University of Maryland, College Park from 2002 to 2004, Wang joined the faculty of the University of British Columbia in 2004.

She is editor-in-chief of the signal processing journal IEEE Signal Processing Letters.

Recognition
In 2017, Wang was elected as an IEEE Fellow, "for contributions to statistical signal processing for multimedia security and brain data analytics". Wang is a Fellow of the College of New Scholars, Artists and Scientists of the Royal Society of Canada, elected into the cohort of 2017. She was elected to the Canadian Academy of Engineering in 2018.

References

External links
Home page

Year of birth missing (living people)
Living people
Canadian electrical engineers
Canadian women engineers
Chinese electrical engineers
21st-century Chinese women engineers
21st-century Chinese engineers
Tsinghua University alumni
University of Connecticut alumni
Academic staff of the University of British Columbia
Fellows of the IEEE
Fellows of the Canadian Academy of Engineering
Twitchell 12. The Twitchell 12 is an American sailboat that was designed by Ron Holder as a day sailer for people with limited mobility and first built in 1991.

Production
The design was built by W. D. Schock Corp in the United States, from 1991 until 1993, with 27 boats completed, but it is now out of production.

Design
The Twitchell 12 is a recreational sailing dinghy, built predominantly of fiberglass, with wood trim. It has a fractional sloop rig with a jib boom, a raked stem, a reverse transom, a transom-hung rudder controlled by a cockpit joystick and a retractable daggerboard. It displaces .

The boat has a draft of  with the daggerboard extended and  with it retracted, allowing operation in shallow water, beaching or ground transportation on a trailer.

The design has a hull speed of .

See also
List of sailing boat types

Similar sailboats
Martin 16

References

External links
Photo of a Twitchell 12

Dinghies
1990s sailboat type designs
One-design sailing classes
Sailboat type designs by Ron Holder
Sailboat types built by W. D. Schock Corp
Guided Multipurpose Munition. The Guided Multipurpose Munition (GMM) is an infantry precision guided munition being developed by Saab Group and Raytheon.

Design
The GMM is guided by semi-active laser (SAL) homing which can be directed by a laser designator either mounted on the launcher or used by an assistant, capable of firing in lock on before launch (LOBL) and lock-on after launch (LOAL) modes to track and engage moving targets out to 2,500 m; other seeker options including imaging infrared (IIR) are also under consideration. It has a dual charge multipurpose warhead capable of defeating bunkers, concrete, and light armored vehicles fitted with explosive reactive armor (ERA). It can be fired from enclosed spaces using a two-stage soft launch propulsion system with a small booster motor to eject it out of the launcher before the main motor ignites. The missile weighs  and can be fired from the Carl Gustaf recoilless rifle or an adaptation of the AT4 disposable launcher; the missile case has the 84 mm diameter of the tubes, but the diameter of the missile itself is slightly less to avoid interference between the folding control and lift wings that steer it and the launcher's interior. In the future it could also be employed from remote weapon stations (RWS), manned and unmanned aerial, ground, and naval systems, and possibly indirect fires such as mortar systems.

Development
After the unveiling of the lightweight M4 Carl Gustaf in October 2014, Saab began developing a concept dubbed the Ultra Light Missile, a guided round that could be fired from the recoilless rifle out to extended ranges. In November 2017, Saab and Raytheon teamed up to further cooperate on the project, and in September 2018 they were awarded a contract to answer a U.S. Special Operations Command (SOCOM) requirement for a precision guided Gustaf round. It was unveiled publicly as the Guided Carl Gustaf Munition (GCGM) in October 2018.

Test firings of the GCGM were conducted in September 2019 in Sweden. Two inert rounds were fired at stationary targets from 1,400 m away, and a third inert round hit a moving target at 1,800 m. In addition to tests in the U.S., the GCGM had 11 successful firings in 2019. In November 2020, the weapon was demonstrated at Yuma Proving Ground. As it had been adapted to be launched from the AT4, the name was changed to the Guided Multipurpose Munition since it was no longer strictly related to the Carl Gustaf. Seven rounds were fired with live warheads, four from the Carl Gustaf and three from AT4s, against different types of targets such as a triple brick wall, a double-reinforced concrete wall and an up-armored vehicle at distances from 1,550 to 2,500 m.

See also
NLAW
Spike-SR
FGM-172 SRAW
Spike F2M2
MBDA Enforcer
Raytheon Pike

References

Explosive weapons
Raytheon Company products
Wavelength 30. The Wavelength 30 is an American sailboat that was designed by Paul Lindenberg as a racer-cruiser and first built in 1980.

The Wavelength 30 is a development of the very similar Lindenberg 30, the prototype for which was a boat named Wavelength.

Production
The design was built by W. D. Schock Corp in the United States from 1980 until 1981, with ten boats built, but it is now out of production.

Design
The Wavelength 30 is a racing keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a nearly plumb stem, a reverse transom, an internally mounted spade-type rudder controlled by a tiller and a fixed fin keel. It displaces  and carries  of ballast.

The boat has a draft of  and is fitted with a German BMW diesel engine for docking and maneuvering.

The design has a hull speed of .

See also
List of sailing boat types

Related development
Lindenberg 30

References

External links

Photo of a Wavelength 30

Keelboats
1980s sailboat type designs
Sailing yachts
Sailboat type designs by Paul Lindenberg
Sailboat types built by W. D. Schock Corp
Wavelength 35. The Wavelength 35 is an American sailboat that was designed by Paul Lindenberg as a racer-cruiser and first built in 1980.

The Wavelength series of boats is named for the prototype Lindenberg 30 which was a boat named Wavelength.

Production
The design was built by W. D. Schock Corp in the United States starting in 1983, but it is now out of production.

Design
The Wavelength 35 is a racing keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, an internally mounted spade-type rudder and a fixed fin keel. It displaces .

The boat has a draft of  and a hull speed of .

See also
List of sailing boat types

References

Keelboats
1980s sailboat type designs
Sailing yachts
Sailboat type designs by Paul Lindenberg
Sailboat types built by W. D. Schock Corp
Roberto Sabatini. Roberto Sabatini is an aerospace researcher and academic specializing in avionics, spaceflight and robotics/autonomous systems. He is a full professor at Khalifa University in the United Arab Emirates, and an honorary professor at RMIT University in Melbourne, Australia.

He is a fellow of the Institution of Engineers Australia and the Royal Aeronautical Society, and is editor of a number of journals in the field.

He has received several awards, such as the Arch T. Colwell Merit Award - Society of Automotive Engineering (2015), Scientist of the Year - Australian Defense Industry Awards (2019).
and Distinguished Leadership Award from Aviation/Aerospace Australia in 2021.

References

External links 

Living people
Academic staff of Khalifa University
1969 births
Fellows of the Royal Aeronautical Society
Australian aerospace engineers
Australian people of Italian descent
Aeronautical engineering academics
UMS Skeldar. UMS Skeldar AG is an aircraft manufacturer based primarily in Switzerland, and with manufacturing facilities in Sweden. It was formed in 2018 as a joint venture between majority shareholder UMS Aero Group and Saab. Its principle product is the Skeldar range of unmanned aircraft systems (UAS) rotorcraft. The company also owns the Hirth company, whose range of light two-stroke engines provide the power units for the rotorcraft.

Formation
Swiss UAV AG was a privately owned company based in Switzerland that designed and manufactured unmanned aerial vehicles (drones).

It entered a partnership with Saab, in May 2009.

In 2013, Swiss UAV was acquired by Unmanned Systems AG and the following year merged into UMS Aero Group alongside Swedish company Unmanned Systems AB. 

At the end of 2015 UMS Aero Group and Saab, manufacturers of the Skeldar unmanned vehicle, formed UMS Skeldar, a joint venture in which UMS Aero Group is the majority partner. Besides its Swiss headquarters and manufacturing, it maintains a manufacturing facility in Sweden, as UMS Skeldar Sweden AB.

Aircraft
Earlier types have included:
 F-330 Fixed-wing UAS.
 F-720 Fixed-wing UAS.
 R-350 Rotary UAS.

Current products include two rotorcraft drone systems:
 UMS Skeldar V-200
 UMS Skeldar V-150

Subsidiary companies

UMS Skeldar acquired the long-established Hirth German light piston engine manufacturer in 2018. Hirth provide the heavy-fuel (jet fuel) engines used in the rotorcraft.

References

Aircraft manufacturers of Switzerland
2015 establishments in Switzerland
Swiss companies established in 2015
Saab aircraft
Privately held companies of Switzerland
Multinational companies headquartered in Switzerland
Manufacturing companies of Sweden
Bis(allyl)nickel. Bis(allyl)nickel is an organonickel compound with the formula Ni(η3-C3H5)2.  The molecule consists of two allyl ligands bound to nickel(II).  It has inversion symmetry.  It is a volatile yellow liquid at room temperature.

Preparation and reactions
It can be prepared by the reaction of allyl magnesium bromide with anhydrous nickel chloride.  It was first prepared similarly by Gunther Wilke et al. The same group reported that the complex react with carbon monoxide to give nickel tetracarbonyl and 1,5-hexadiene.  It catalyzes the trimerization of butadiene.  With tertiary phosphines, the complex gives the tetrakis derivative. Such reactions to proceed via the intermediacy of the 18-electron adduct.

References

Organometallic chemistry
Transition metals
Allyl complexes
Coordination chemistry