omniomni/omni-engineering huggingface dataset:
Pavel Grinfeld. Pavel Grinfeld (also known as Greenfield) is an American mathematician and associate professor of Applied Mathematics at Drexel University working on problems in moving surfaces in applied mathematics (particularly calculus of variations), geometry, physics, and engineering.

Biography
Grinfeld received his PhD in Applied Mathematics from MIT in 2003; followed by two years as a postdoctoral fellow at the MIT Department of Earth, Atmosphere and Planetary Sciences, conducting research in geodynamics. He joined the Department of Mathematics at Drexel University in 2005; currently teaching Linear Algebra, Differential Equations, and Tensor calculus.

Grinfeld is the author of the dynamic fluid film equations. Grinfeld co-authored with Haruo Kojima of Rutgers University on the instability of the 2S electron bubbles.

He is the author of a textbook on Tensor Calculus (2013) as well as an e-workbook on Linear Algebra. He has recorded hundreds of video lectures; several dozen on Tensors (in a video course which may accompany his textbook) as well as over a hundred shorter videos on linear algebra. Many of these are available on YouTube as well as other sites.

Research interests
Hydrodynamics and fluid films dynamics, thermodynamics and phase transformations, minimal surfaces and calculus of variations.

Other Activities 
Grinfeld is the founder of Lemma, Inc. which has developed the online learning system also called Lemma (https://www.lem.ma)

Bibliography

References

External links
 Grinfeld's site at Drexel University
 
 Grinfeld's Lemma site with videos, practice problems, and textbooks
 

1974 births
Living people
21st-century American mathematicians
Massachusetts Institute of Technology School of Science alumni
Drexel University faculty
Yeheskel Bar-Ness. Yeheskel Bar-Ness (Hebrew: יחזקאל בר-נס) is a Distinguished Professor Emeritus at New Jersey Institute of Technology (NJIT).

Education
Bar-Ness received a bachelor's and a master's degree in electrical engineering from the Technion in Haifa, Israel, and a doctorate from Brown University.

Career
Bar-Ness published more than 200 papers in his professional life over 40 year. He had one U.S. patent on smart antennas.

His research was funded by the National Science Foundation, the New Jersey Commission on Science and Technology, the United States Army, the United States Air Force and the Naval Oceanic Center.

He was the Founding Editor-in Chief of the journal of IEEE Communications Letters.

He made research contributions on adaptive multiuser detection, array processing and interference cancellation, and wireless mobile and personal communications.

Honors and awards
 Fellow of the Institute of Electrical and Electronics Engineers (IEEE) for contributions to the advancement of coherent communications and array processing for interference cancellation.
 Recipient of the Kaplan Prize (1973).
 Named an Inventor of the Year by the New Jersey Inventors Hall of Fame (2006).
 NJIT Excellence in Research Lifetime Achievement Award (2014)

Doctoral students
According to the Mathematics Genealogy Project, Bar-Ness advised 23 doctoral students at Tel Aviv University, University of Pennsylvania and New Jersey Institute of Technology.

References

External links
'New Jersey Institute of Technology : Experts Database -- For the Media - Yeheskel Bar-Ness'
"NJIT : Electrical and Computer Engineering Department -- Our People - Yeheskel Bar-Ness"

Living people
Year of birth missing (living people)
University of Pennsylvania faculty
Brown University alumni
New Jersey Institute of Technology faculty
Fellows of the IEEE
Technion – Israel Institute of Technology alumni
Place of birth missing (living people)
Academic staff of Tel Aviv University
American electrical engineers
Indraéro Aéro 20. The Indraéro Aéro 20 is a small, two-seat, single-engined monoplane, built in France in the mid-1960s, for general and sports flying.  Only one was built, but this remains active.

Design and development

Design work on the Aéro 20 began in June 1965 and construction started in that September.  It first flew on 11 June 1966 and received its amateur category SGAC certification in August 1968.

It is a conventional single-engine low-wing monoplane, seating two in tandem.  The wings are wooden structures with fabric covering. They carry 5° of dihedral and are braced with struts running from the upper fuselage longerons to the upper wing surface. There are no flaps.  The tail surfaces are also built of wood, with fabric covering.  The fin and rudder are tall, tapered and straight edged.  The elevators carry trim tabs.

The fuselage of the Aéro 20 is flat sided, with wooden longerons and frames, plywood covered and with a rounded decking.  The two seats, with a small baggage space behind were originally enclosed under a continuous canopy.  The aircraft was originally powered by a  Simson, which was later replaced with a 90 hp (60 kW) Continental C90-8 flat 4-cylinder engine.  The fixed, tailwheel undercarriage has spring steel shock absorber main legs with a track of 2.44 m (8 ft); no brakes are fitted.

Operational history
Two Aéro 20 were built, one for each boss of Indraéro, Chapeau and Blanchet. One was destroyed but Chapeau's (no.1, F-PKXY) remains on the French register in 2014 and is still active. The canopy was discarded and replaced in the 1980s by a pair of small windscreens and the wheels enclosed in spats.  It won the RSA award for the best restoration of classic planes in 1982.

Specifications

References

1960s French civil utility aircraft
Aero 20
Low-wing aircraft
Aircraft first flown in 1966
Single-engined tractor aircraft
Robert M. Miura. Robert M. Miura (September 12, 1938 - November 25, 2018) was a Distinguished Professor of Mathematical Sciences and of Biomedical Engineering at New Jersey Institute of Technology (NJIT) in Newark, New Jersey. He was formerly a professor in the Department of Mathematics at the University of British Columbia in Vancouver.

Education
Miura received his BS (1960) and MS (1962) degrees from University of California, Berkeley.  He earned his MA (1964) and PhD (1966) from Princeton University. Following his PhD, Miura was a postdoctoral fellow at the Courant Institute at NYU.

Research
Miura's research has spanned many subjects in the mathematical sciences. His earliest contributions were on the topic of conservation laws for nonlinear wave equations. Miura discovered an inverse scattering transformation known as the Miura Transformation for analytically solving the modified Korteweg–de Vries equation. This work helped establish the theory of solitons.

Miura’s research interests focused on developing mathematical models in neuroscience for cell dynamics. He works with biologists to help them understand how and why a type of depressed brain activity induced in animals spreads as a slow, pathological wave. Robert, along with collaborator Henry Tuckwell, formulated one of the first models of spreading depression using the continuum approach. In recent years, he has expanded on this work in order to understand not just ion, but also energy homeostasis in the brain.

Life
Miura spent 26 years at the University of British Columbia in Vancouver, as a professor of mathematics.  He joined NJIT in 2001. He was married to Kathryn Bannai and was a father of four children.

Honors
 Fellow of Royal Society of Canada (1995).
 Fellow of American Association for the Advancement of Science (2005).
Steele Prize for Seminal Contribution to Research, American Mathematical Society (2006)
 Fellow of Society for Industrial and Applied Mathematics (2009).
Fellow of American Mathematical Society (2012).

References

External links
"Homepage : Robert M. Miura "
"Mathematics Genealogy Project - Robert Mitsuru Miura"
"NJIT : Mathematical Sciences -- Our People - Robert M. Miura"
"NJIT : Experts Database -- For the Media - Robert M Miura"
Miura transformation at DispersiveWiki

1938 births
2018 deaths
Vanderbilt University faculty
Academic staff of the University of British Columbia
University of Washington faculty
University of California, Berkeley alumni
Princeton University alumni
New Jersey Institute of Technology
Fellows of the American Association for the Advancement of Science
Fellows of the American Mathematical Society
Fellows of the Society for Industrial and Applied Mathematics
Fellows of the Royal Society of Canada
Haarlem Mill. Haarlem Mill, on the River Ecclesbourne in Wirksworth, Derbyshire, was an early cotton mill. Built by Richard Arkwright, it was the first cotton mill in the world to use a steam engine, though this was used to supplement the supply of water to the mill's water wheel, not to drive the machinery directly.

The site of the mill, including an older corn mill, was leased by Arkwright in 1777. Construction of the mill building in brick and stone was completed by June 1780, and the reported death of a young man attempting to climb on the water wheel suggests that it was operational at this date. After initially investigating the purchase of a steam engine from the Birmingham firm of Boulton and Watt, Arkwright installed a reciprocating steam engine, probably manufactured by Francis Thompson of Ashover, to supplement the occasionally inadequate water supply. This was a medium-sized engine with a  beam, an  flywheel a  cylinder and a stroke of . Similar to engines commonly used at the time to pump out nearby mines, it operated 24 hours a day, powering two pumps.

By 1789 the mill was employing almost 200 people, but it was sold by Arkwright three years later. The base of the original building survives, but the upper three floors have since been rebuilt.
The empty grade II* listed building was listed on Historic England's Heritage at Risk Register but in 2018 was noted that a major phase of repair and conversion work had been completed.

See also
Grade II* listed buildings in Derbyshire Dales
Listed buildings in Wirksworth

Notes

Bibliography

External links
"Haarlem Mill", Official Website

Grade II* listed buildings in Derbyshire
Grade II* listed industrial buildings
Watermills in Derbyshire
Textile mills completed in the 18th century
Cotton mills in Derbyshire
Wirksworth
Julian Hirsch. Julian David Hirsch (May 15, 1922 - November 24, 2003) was an electrical engineer and audio critic.

Life and early career
Hirsch discovered amateur radio at the age of 14 and was soon building his own equipment. He received a Bachelor's degree in Electrical Engineering from The Cooper Union in 1943 and served in the Army Signal Corps during World War II. In 1954, Hirsch and several other engineers started testing commercial audio components to see how well they met their performance claims, and they began a subscription-based newsletter, the Audio League Report, where they published the results.

Hirsch-Houck Laboratories
In 1957, Hirsch and Gladden Houck, who also worked on the Audio League Report, formed Hirsch-Houck Laboratories, where they continued testing audio equipment such as turntables, receivers, and speakers, and sold the data to various publications. In 1960, Ziff-Davis Publishing bought out Gladden Houck and Hirsch began providing test data exclusively for its publications, although the lab continued to be called Hirsch-Houck Laboratories. Hirsch first tested gear for Popular Electronics, then, in October 1961, for Hi-Fi/Stereo Review, which was later renamed Stereo Review. He also began writing the monthly column "Technical Talk." Hirsch estimated that he wrote about 4,000 laboratory test reports for various publications, 2,400 of those at Stereo Review, by the time he retired in 1998. He remained an editor-at-large for Stereo Review, which merged with Video magazine, and in 2000 was renamed Sound & Vision.

Legacy
Hirsch helped draft the Institute of High Fidelity standards that made it easier for consumers to compare audio equipment. Bob Ankosko, an editor-in-chief at Sound & Vision, said "Julian Hirsch was one of the most influential writers ever in consumer electronics."

Hachette Filipacchi Media U.S., publisher of Sound & Vision, established the Julian Hirsch Scholarship Fund at his alma mater, the School of Engineering of The Cooper Union.

References

1922 births
2003 deaths
American electrical engineers
United States Army personnel of World War II
United States Army soldiers
20th-century American engineers
Altium Designer. Altium Designer (AD) is a printed circuit board (PCB) and electronic design automation software package for printed circuit boards. It is developed by American software company Altium Limited. Altium Designer was formerly named under the brand Protel.

History 
Altium Designer was originally launched in 2005 by Altium, then named Protel Systems Pty Ltd. It has roots in 1985, when the company launched the DOS-based PCB design tool named Protel PCB (which later emerged into Autotrax and Easytrax). Originally it was sold only in Australia. Protel PCB was marketed internationally by HST Technology since 1986. The product became available in the United States, Canada, and Mexico beginning in 1986, marketed by San Diego–based ACCEL Technologies, Inc., under the name Tango PCB. In 1987, Protel launched the circuit diagram editor Protel Schematic for DOS.

In 1991, Protel released Advanced Schematic and Advanced PCB 1.0 for Windows (1991–1993), followed by Advanced Schematic/PCB 2.x (1993–1995) and 3.x (1995–1998). In 1998, Protel 98 consolidated all components, including Advanced Schematic and Advanced PCB, into one environment. Protel 99 in 1999 introduced the first integrated 3D visualization of the PCB assembly. It was followed by Protel 99 SE in 2000. Protel DXP was issued in 2003, Protel 2004 in 2004, Altium Designer 6.0 in 2005. Altium Designer version 6.8 from 2007 was the first to offer 3D visualization and clearance checking of PCBs directly within the PCB editor.

Features 
Altium Designer's suite encompasses four main functional areas, including schematic capture, 3D PCB design, field-programmable gate array (FPGA) development and release/data management. It integrates with several component distributors for access to manufacturer's data. It also has interactive 3D editing of the board and MCAD export to STEP. Altium 365, a cloud-based infrastructure platform, connects all key stakeholders and disciplines for PCB design. This includes mechanical designers, engineers, PCB designers, parts procurement, fabrication, and assembly. Altium 365 hosting allows to find, configure and use parts.

File formats 

Altium Designer supports import & export of various PCB and CAD data exchange file formats. The tool's native file formats are the binary file formats  and .

It can also import and export AutoCAD / and ISO 10303-21 STEP file formats.

See also 

 Comparison of EDA software
 List of free electronics circuit simulators

References

External links 
 , Altium
 Altium Designer Overview - PCB Design Tool
 What's New in Altium Designer

Electronic design automation software
Indraéro Aéro 30. The Indraéro Aéro 30 is a single seat, single engined sports biplane designed in France in the late 1960s.  Only one was built.

Design and development

Design and construction of the Aéro 30 began in the autumn of 1967. It first flew on 23 September 1968 and received its amateur category SGAC certification in that October.

It is a small, single seat biplane powered by a 45 hp (34 kW) Salmson radial engine, with an entirely wooden structure.  The fabric covered wings are staggered, of parallel chord and without sweepback, dihedral or flaps.  The Aéro 30 is a single bay biplane with its lower wings attached to the bottom of the fuselage and the upper wing placed well above the fuselage by a pair of single, streamlined interplane struts.  Further bracing joins the lower fuselage to the upper wing near the top of the interplane struts, assisted by other struts between the upper fuselage and the wing centre section.  The cantilever tail surfaces are plywood covered. The vertical tail is tall and straight tapered.  The elevators carry trim tabs.

The fuselage is also plywood covered, the lower part flat sided but with curved decking.  This is deep enough immediately aft of the cockpit to meet the top of the single piece, rear-sliding canopy but tapers towards the tail.  The undercarriage is fixed, with a rear tailskid.  The main legs are attached to the fuselage just ahead of the wing leading edge and have steel spring shock absorbers. No brakes are fitted.

Operational history

Only one Aéro 30 was built. F-PPPA remains on the French DGAC register and may still be active.

Specifications

References

1960s French civil utility aircraft
Aero 30
Biplanes
Aircraft first flown in 1968
Single-engined tractor aircraft
Institute of Optronics. The Institute of Optronics (shortened as IOP) was a military funded research and development institute located in Rawalpindi, Punjab, Pakistan.

Established in 1984 by the Ministry of Defence (MoD), the Institute of Optronics (IOP) conducted research on military lasers, optoelectronics and photonics to support the capabilities of the Pakistan Armed Forces.

After a reorganization within the MoDP in 2020 it has been merged into the newly formed Research and Development Establishment.

Overview

In 1984, the Ministry of Defence established the Institute of Optronics (IOP) as a research and development (R&D) institute focused on military applications of lasers, optoelectronics, photonics and optronics. Set up under military control, the institute's first director was Lieutenant-General Talat Masood from DESTO, located in Rawalpindi Cantonment. The scientific investigations on photonics was led by its principal investigator, Akram S. Hussain Abidi, a physicist with optics specialization who once worked for the NASA at their Goddard Space Flight Center.

Under Abidi's leadership, the institute acquired expertise in night vision technology through reverse engineering of American models. During the period 1985–1989, the IOP successfully developed and manufactured its first night vision devices (NVDs) based on the AN/PVS-4, AN/PVS-5 and AN/PVS-7 models.

Products 

 Single Tube Night Vision Binocular 
 Aviator's Night Vision Goggle For Helicopter 
 Thermal Imaging (TI) Based APC Commander & Driver Sights 
 Short & Medium Range Thermal Weapon Sight 
 Night Vision Weapon Sight For LMG

See also
 Night vision device
 AN/PVS-4
 AN/PVS-14
 IDEAS

References

External links
Official Website of Ministry of Defence Production
Research and Development Establishment

1984 establishments in Pakistan
Defunct government departments and agencies of Pakistan
Fairchild BQ-3. The Fairchild BQ-3, also known as the Model 79, was an early expendable unmanned aerial vehicle – referred to at the time as an "assault drone" – developed by Fairchild Aircraft from the company's AT-21 Gunner advanced trainer during the Second World War for use by the United States Army Air Forces. Two examples of the type were built and flight-tested, but the progress of guided missiles rendered the assault drone quickly obsolete, and the type was not produced.

Design and development
Development of the BQ-3 began in October, 1942, under a program for the development of "aerial torpedoes", later and more commonly referred to as "assault drones", that had been instigated in March of that year. Fairchild was awarded a contract for the construction of two XBQ-3 prototypes, based largely on the AT-21 Gunner advanced gunnery trainer already in United States Army Air Forces service.

The XBQ-3 was a twin-engined, low-wing aircraft, fitted with retractable tricycle landing gear and a twin-finned empennage; although the aircraft was intended to be operated by radio control with television assist, a two-seat cockpit was included in the design for testing and ferry flights. Power was provided by two Ranger V-770 inline piston engines of  each; up to  of explosives could be carried by the aircraft in unmanned configuration.  Like the contemporary Fleetwings BQ-2, the aircraft would be destroyed in the act of striking the target.

Flight testing
The first flight of the XBQ-3 took place in July 1944; later that month, one of the prototypes was severely damaged in a forced landing. Despite the accident, flight testing continued; however, the assault drone was determined to have no significant advantage over conventional bombers, and advances in the field of guided missiles were rapidly rendering the concept obsolete. As a result, the program was cancelled towards the end of 1944.

Specifications (XBQ-3)

See also

References

Further reading

BQ-1
1940s United States bomber aircraft
Unmanned aerial vehicles of the United States
World War II guided missiles of the United States
Cancelled military aircraft projects of the United States
Mid-wing aircraft
Aircraft first flown in 1944
Twin piston-engined tractor aircraft
Aircraft with retractable tricycle landing gear
PSI-Plot. PSI-Plot  is a scientific and engineering data analysis and technical plotting software developed by Poly Software International, Inc. The software can read multiple formats and perform mathematical transforms and statistical analyses. PSI-Plot is maintained on Microsoft Windows operating systems, and the current version is 9.5 for Windows 98 to Windows 7.

History 
PSI-Plot was developed by Poly Software International, Inc. in September 1992, under the name TechPlot for MS-DOS.  The name was later changed to PS-Plot, and changed again to the current PSI-Plot.  PSI-Plot later migrated from MS-DOS to the Microsoft Windows operating system.  Currently, PSI-Plot is used by more than 75,000 scientists and engineers worldwide.

Capabilities 
PSI-Plot features an Excel-style spreadsheet where users can manage and analyze their data, perform various numerical calculations, solve their equations, and visualize their data in 2D and 3D graphics.  Users can also import their data from various formats including Microsoft Excel, ASCII, CSV, Microsoft Access, and dBase.

PSI-Plot also includes an eighteen-lesson tutorial for new users to introduce them to the basics of PSI-Plot.

Data Analysis 
PSI-Plot has implemented a broad ranges of commonly used data analysis methods, which include data interpolation, three different methods (Levenberg-Marquardt, Powell, and Simplex) for non-linear curve fitting, over one hundred built-in fitting models, multiple linear fitting, stepwise multiple liner fitting, generalized linear models (GMLs), dose-response analysis, digital signal processing (DSP), matrix manipulation and eigen-problems, ordinary differential equations (ODE) solvers, algebraic equation solvers, difference equation solvers, and other methods.

2D and 3D Plots 
PSI-Plot provides various 2D and 3D plot types and allows users to customize the graphics in great detail for visual presentations and for submission to research journals for publication.  Users have full control of plot and label attributes, including background color, color gradients, size, and thickness. PSI-Plot supports 2D and 3D Cartesian coordinate systems as well as special coordinate systems such as polar, Smith, ternary (triangle), Nichols, cylindrical, and spherical systems.

Comparison with ProStat 
ProStat is the sister software to PSI-Plot.  The differences between the two software are generally in extent or depth of a tool class rather than presence or absence. ANOVA in PSI-Plot becomes ANOVA, ANCOVA and MANOVA in ProStat, while the range of plot types in ProStat is extended in PSI-Plot by the addition of options such as Pareto charts, Smith curves, ternary, vector, and column plots. FFT is available in both, but extended differently according to the emphases of the different target users.

References

External links 
 Poly Software International, Inc., official site

Plotting software