omniomni/omni-engineering huggingface dataset:
J. Augustine DeSazilly. J. Augustine DeSazilly (fl. mid-19th century) was a French engineer.

In the early 1850s, DeSazilly published a paper postulating the "profile of equal resistance," a major theoretical advance in the technology of masonry gravity dams, based on the hydrostatic force exerted by a given height of water in relation to the weight of masonry used in the dam's construction (estimated at 150 pounds per cubic foot). DeSazilly considered two extreme conditions, a filled reservoir and an empty reservoir, and created a model for equalizing stresses on the masonry across every horizontal cross section. He developed a vertical cross section in which the stresses at the upstream face of a masonry gravity dam with the reservoir empty are equal to those at the downstream face with the reservoir filled. His hypothesis provided a means of calculating the minimum amount of material that could be used while assuring stability. Although he himself never carried out the construction of a dam on this "profile of equal resistance," it was used in 1858 to build the Furens Dam across the river Loire.

DeSazilly also developed a process of surface drainage for building on a slope, and contributed to the building of railways, roads, and bridges.

References

External links
 A diagram of DeSazilly's "profile of equal resistance" may be viewed in The History of Large Federal Dams: Planning, Design, and Construction (Government Printing Office, 2005), p. 52  online.

19th-century French people
French civil engineers
Structural engineers
Hydraulic engineers
Year of birth missing
Year of death missing
Strymon (company). Strymon is an American manufacturer of audio equipment, originally called Damage Control Engineering. They are best known for their line of high end guitar effects pedals which use a mixture of analog circuitry and digital signal processing. The company is based in Westlake Village, California, and manufactures products in the United States.

Products 
Under the Damage Control name, the company's product line included several guitar preamps, distortions, multi-effects, and delays which utilized tubes within the pedals themselves. 

The Strymon product line includes distortion, delay,
reverb,
chorus,
flanger, and compressor pedals for guitar.

References

External links 

 Official website

Electronics companies of the United States
Music equipment manufacturers
Guitar effects manufacturing companies
Companies based in Westlake Village, California
Rigid belt actuator. A rigid belt actuator, also known as a push-pull belt actuator or zipper belt actuator, is a specialized mechanical linear actuator used in push-pull and lift applications. The actuator is a belt and pinion device that forms a telescoping beam or column member to transmit traction and thrust. Rigid belt actuators can move dynamic loads up to approximately 230 pounds over about 3 feet of travel.

Principle of operation

Rigid belt actuators can be thought of as rack and pinion devices that use a flexible rack. Rigid belt actuators use two reinforced plastic ribbed belts, that engage with pinions mounted on drive shafts within a housing. The belts have evenly spaced load bearing blocks on the non-ribbed face. As the pinions spin, the belts are rotated 90 degrees through the housing, which interlocks the blocks like a zipper into a rigid linear form. The resulting beam or column is effective at resisting tension and compression (buckling). Because the actuating member can fold on itself, it can be stored relatively compactly in a storage magazine, either in an overlapping or coiled arrangement. The actuator is driven by an electric motor.

Development

A rigid belt actuator is effectively a non-metallic variation of the rigid chain actuator. But, while the interlocking chain actuator has been around since the middle of the 20th century, rigid belt technology didn't emerge until the new millennium. Joël Bourc'His received a patent for his “Linear Belt Actuator” in 2007.

See also
 Linear actuator
 Rigid chain actuator

References

External links
 Serapid RigiBelt

Actuators
Samtel Group. The Samtel Group is a manufacturer of displays and their components for television, avionics and professional applications. The group also provides engineering services and designs and builds automated processes and special purpose machines. It employs over 6000 people in nine factories and has a turnover of Rs. 12 billion per annum. Its display technology portfolio includes cathode ray tubes for TV and LCD for avionics displays. It developed plasma displays for TV but declined to pursue it commercially. It does not plan to pursue LCD for TV or other commercial applications.

Samtel has registered many patents for developments in display technology and also developed its own technology for automation.

Samtel also developed its own equipment development group which provides all its plants and many external customers with indigenously developed material handling equipment, special-purpose machines and Indian-sourced mechanical components.

The group formed Samtel Engineering Services, which provides mechanical design and engineering services to overseas customers.

In 2008, Samtel HAL Display Systems (SHDS), a joint venture between Samtel Display Systems and HAL won a contract to develop and manufacture multi-function avionics displays for the Su-30MKI. A helmet-mounted sight and display system – Topsight-I, based on technology from Thales – will be developed by STA, a joint venture with Thales, and will be integrated on the Su-30MKI in the next upgrade.

References 

Electronics companies of India
Companies based in New Delhi
John Emery Harriman. John Emery Harriman, Jr. (June 3, 1869 — May 18, 1916) was an American civil engineer and inventor.

Biography 
Harriman was born in 1869 in Somerville, Massachusetts, to John Emery Harriman, Sr., a Civil War veteran of the 6th Massachusetts Regiment, and Sarah Jane Wheeler Harriman. His paternal family went back eight generations to 1622, when the Harrimans left Rowley, Yorkshire, England.

He created the Harriman Aeromobile Company and designed a flying machine in 1902. He also designed an aerocar in 1906, which was patented in 1910, but was never manufactured. He also invented a rotary steam engine.

He married Julia C. Horther, ex-wife of artist Hiram Peabody Flagg, on April 22, 1897. He died at his home in Brookline, Massachusetts, aged 46, after a brief illness.

Publications
A flying machine of safety, stability, adaptability: the Harriman type aeromobile and aerocar

References

1869 births
1916 deaths
People from Somerville, Massachusetts
American aviation pioneers
American people of English descent
Shri Chhatrapati Shivajiraje College of Engineering. Shri Chhatrapati Shivajiraje College of Engineering is an engineering college located on the Pune-Satara Highway, Pune, India. It was established in 2009 by former Education Minister Hon. Mr. Anantrao Thopte.

History
The Shri Chhatrapati Shivajiraje College of Engineering was established in 2009, by Rajgad Dnyanpeeth. Rajgad Dnyanpeeth was established in 1972, by Hon. Anantraoji Thopte with a wider objective of bringing about intellectual awakening and transformation in educational, economic, cultural and social fields, in Maharashtra (India).

Departments 
 Civil Engineering  (2009)
 Electronics and Telecommunication Engineering (2009)
 Computer Engineering (2009)
 Mechanical Engineering (2009)

Description

The Institute has four academic departments.
The Mechanical engineering department and workshops were established in 2009. The department also contains the classrooms for first-year undergraduate degree courses. The department has facilities in Metallurgy, Dynamics, Refrigeration and Air conditioning, Automobile, Heat Engines, Robotics and Automation, CAD/CAM/CAE, Mechanical Measurements and Fluid Mechanics, and workshops in machine, smithy, carpentry, filing, and welding. All laboratories have testing facilities.

The other three departments are Civil engineering, Electronics and Telecommunications engineering, and Computer engineering. The Computer Engineering Department offers a bachelor's degree in Computer Engineering.

Admission 
Admission criteria are based on the Maharashtra CET( 85%) and AIEEE (15%) rankings.

College fest

"Mudra" is the cultural festival held every year in the college. In the recent years, it has witnessed participation from many educational institutions of Pune. Celebrities like actress Bhargavi Chirmule have increased the glory of the festivals of the institute. Mudra also has many events like seminars, debates, quizzes, outdoor games and fun events. "Rajgad Karandak" a state level dance competition enhances the prestige of cultural festival. Many colleges had participated in this event and conquered their positions every year.

"Nirmal Techfest" is a technical festival initiated in the year 2013, in which there are events like robowar, Robo race, contraption, circuit design, town planning, LAN gamings and many more techno fun based events. Many colleges had shown a keen interest in this event as always.

Campus 
The campus covers  on a hill in the suburbs, 40 km from the city center. There are some tourist attractions like Purander fort and Balaji Temple near the college. The college has hostels provided for the students and promised a wifi connection to be made available in time. The hostels have a common TV room, a reading room facilities.

Student associations
Society of Automotive Engineers (SAE), India  (2013)
Mechanical Engineering Students Association (MESA)
Association of Computer Engineers (ACE)

References

External links 

Universities and colleges in Pune
Engineering colleges in Maharashtra
Monuments and memorials to Shivaji
Educational institutions established in 2009
2009 establishments in Maharashtra
Overload (magazine). Overload is a bi-monthly professional computer magazine published by ACCU, that was established in 1993 and is edited by Frances Buontempo. It aims to "publish a high standard of articles about all aspects of software development". All issues of Overload, starting from August 1998, are available online.

History
Overload was started in 1993 as a magazine of the "Turbo C++ SIG". By 1994, it had become a "journal of C++ SIG", with an appropriate change in scope. At that time there were several magazines with similar scope, including C/C++ Users Journal, C++ Report, and to a lesser extent, Dr. Dobb's Journal. The scope of Overload continued to be broadened and in 2000 the magazine was relabeled from "journal of C++ SIG" to "journal of ACCU". About the same time, a board of "readers" was established, to assist authors with improving their articles.

Over time, many competing publications have been discontinued (C++ Report has been discontinued in 2002, C/C++ Users Journal in 2006, Dr Dobbs Journal in 2009), and by 2010 Overload has become the only magazine to cover this area, which has attracted articles of notable writers such as former contributing editor of C/C++ Users Journal Matthew Wilson and creator of C++ Bjarne Stroustrup.

Since its establishment, the scope of the magazine has evolved from issues specific to C/C++ into all aspects of software development, with a particular emphasis on Agile software development. In 2005 Overload published a Quality Manifesto by Tom Gilb.

Notable contributors
 Bjarne Stroustrup
 Matthew Wilson
 David Abrahams 
 Tom Gilb
 David H. Bailey
 Kevlin Henney
 Nicolai Josuttis
 Scott Meyers

Editors
 Frances Buontempo (2012–present)
 Ric Parkin (2008–2012)
 Alan Griffiths (2003–2008)
 John Merrels (1998–2003)
 Sean A. Corfield (1995–1997)
 Mike Toms (1993–1994)

References

External links
 
 Bibliography of Overload articles

1993 establishments in the United Kingdom
Bi-monthly magazines published in the United Kingdom
Computer magazines published in the United Kingdom
Magazines established in 1993
Professional and trade magazines
Mass media in Oxfordshire
Trainguard MT. Trainguard MT is a communication-based train control (CBTC) developed by Siemens Transportation Systems (ex Matra Transport international, and now integrated into Siemens Mobility) which allows fully automated circulation of rapid transit trains, and thanks to moving block system, less time between trains.

Rapid transit lines using Trainguard MT 
 Algiers Metro
 Barcelona Metro Line 9
 Budapest Metro Line M2 and Line M4
 Copenhagen S-train
 London Elizabeth Line (Abbey Wood to Paddington)
 Jabodebek LRT (Open in July 2023)
 Guangfo Metro
 Guangzhou Metro Line 4 and Line 5
 MTR East Rail Line
 Nanjing Metro
 S3 Line
 Line 7
 New York City Subway  (see also Signaling of the New York City Subway#Automation)
 Paris Métro Line 14, under the name of "SAET"
 São Paulo Metro Line 4
 Seoul Metropolitan Subway Seohae Line (Metro Section only)
 Sofia Metro Line 3
 Suzhou Rail Transit Line 5

References 

Rapid transit
Train protection systems
North American MQM-42. The MQM-42 was a supersonic target drone developed by North American Aviation (from 1967 North American Rockwell). Developed in two subvariants, Redhead and Roadrunner, it was used by the United States Army in the 1960s and 1970s.

Design and development
Given the company designation NA-273, the Redhead/Roadrunner drone program produced a small aircraft of largely conventional design, with small delta wings and a downswept tailplane; the vertical stabilizer doubled as a pylon for the aircraft's ramjet engine. A solid-propellant rocket provided thrust until the ramjet reached operating speed; launch was from the same launcher as that used by the MGR-3 Little John battlefield rocket.  Two minor variants of the drone were produced; 'Redhead' was optimized for high-altitude flight, at heights of up to , while 'Roadrunner' was a variant for low-altitude operation as low as  above the ground, and both could reach speeds of between Mach 0.9 and Mach 2. An autopilot, set to maintain a preset altitude, provided control of the drone; radio command guidance from a ground control station could override the autopilot. At the end of a flight, if the target drone had not been shot down, recovery could be either on command from the ground station, or automatic in case of fuel exhaustion or loss of control; a retrorocket would decelerate the drone to allow for deployment of a recovery parachute.

Operational history
First flight of the NA-273 took place in 1961; in 1963, the designation MQM-42A was applied to both variants. The MQM-42 was used primarily to provide training in tracking and engaging targets for the MIM-23 Hawk surface-to-air missile; it remained in service with the United States Army through the mid-1970s.

Specifications (MQM-42A)

See also

References

Citations

Bibliography

MQM-042
1960s United States special-purpose aircraft
Target drones of the United States
Ramjet-powered aircraft
Mid-wing aircraft
Single-engined jet aircraft
Aircraft with auxiliary rocket engines
Casing cutter. A Casing-cutter is a device used in petroleum industry to cut a complete section of a casing, a liner or all others tubular components in a well bore.
This cutting tool is composed by several cutting  blades (reinforced with Tungsten carbide) pivotally mounted on support body.
During cutting operations, the cutting blades are gradually deployed outside the support body by hydraulic pressure or mechanical action

See also 
Drilling rig
Driller (oil)
Drag bit
Drill bit
Drilling stabilizer
Hole opener
Roller reamer

External links 
 Hydraulic Casing Cutter sheet from Drillstar Industries 
 Hydraulic Casing Cutter sheet from PionnerOilTools

Drilling technology
Rotary hook. The rotary hook or rotating hook is a bobbin driver design used in lockstitch sewing machines since the 19th century.  It triumphed over competing designs because it can run at higher speeds with less vibration. Rotary hooks and oscillating shuttles are the two most common bobbin drivers in use today.

Operation

The rotary hook continuously rotates in place, hooking the upper thread each time its pointed tip passes the 12 o'clock position.  Enough upper thread is pulled from above to pass around the bobbin case, which sits loosely inside the hook frame such that loops of thread can pass completely over it.  The excess thread, no longer needed, is then pulled back upward by the sewing machine's take-up arm.

This arrangement is mechanically very simple but also introduces a significant limitation. Since the lower bobbin must pass completely through the upper thread, and the upper thread necessary to complete this passage must be completely withdrawn by the take-up arm, the lower bobbin must either be very small or the take-up arm must have a very long stroke.

History

Wilson

The technology was invented by Allen B. Wilson in 1851, in steps.  Wilson had just left an unsatisfactory business relationship in order to partner with Nathaniel Wheeler, who was impressed by a model of Wilson's vibrating shuttle machine.  Ever since developing the vibrating shuttle, Wilson had been ruminating on a plan for a machine that used a rotating hook combined with a traditional reciprocating bobbin.  For this hybrid machine he received patent , (reissued as RE914 on 28 February 1860).
Knowing that such a machine would surely lead to patent litigation with his former partners who had bought out the patent for the vibrating shuttle, Wilson kept working, and developed a refined design which kept the bobbin stationary.  He filed for patent, and the partners built their first production rotary hook machine the same year, selling it for US$35 (US$891 adjusted).  The next year patent , was awarded.

The rotary hook design was then called the "Wheeler & Wilson principle" after Wilson's partnership with Wheeler.

Just two years later, in 1853, Scientific American took notice:

"There are 300 of these machines now in operation in various parts of the country, and the work which they can perform cannot be surpassed.... The time must soon come when every private family that has much sewing to do, will have one of these neat and perfect machines; indeed many private families have them now.... The price of one all complete is $125 [USD3184 adjusted]; every machine is made under the eye of the inventor at the company's machine shop, Watertown, Connecticut, so that every one is warranted ... agreement between Mr. Howe* and Messrs. Wheeler, Wilson & Co., so every customer will be perfectly protected...."

* Mr. Howe is mentioned due to the patent thicket that threatened to put the smaller sewing machine companies out of business.

White

Later, once the patents had expired, the White Sewing Machine Company used it in the popular White Family Rotary machine.

References

American inventions
Sewing
Sewing machines
CERIAS. The Center for Education and Research in Information Assurance and Security (CERIAS) of Purdue University, United States, is a center for research and education in areas of information security for computing and communication infrastructures.

Its research is focused on the following areas:

Risk management, policies, and laws
Trusted social and human interactions
Security awareness, education, and training
Assurable software and architectures
Enclave and network security
Incident detection, response, and investigation
Identification, authentication, and privacy
Cryptology and rights

CERIAS is one of the world’s leading academic institutions in this area. It is one of the NSF's "Original Seven" Centers for Academic Excellence in Information Assurance Education.

History
CERIAS was rooted in COAST research group (Computer Operations, Audit, and Security Technology) established in 1991 in the Computer Sciences Department of Purdue out of research groups of professors Eugene Spafford and Samuel Wagstaff, Jr. COAST was initially funded by Sun Microsystems, Schlumberger, Bell Northern Research (BNR, now NorTel), and Hughes Research Laboratories. COAST was subsumed by CERIAS on January 1, 1999.

See also
Carnegie Mellon's CyLab
Massachusetts Institute of Technology's Computer Science and Artificial Intelligence Lab

References

Computer security organizations
Telecommunications organizations
Purdue University
Lyd (locomotive). Lyd is a narrow gauge steam locomotive built by the Ffestiniog Railway in their own Boston Lodge shops over a period of 15 years.

Lyd is based on the design of the Lynton and Barnstaple Railway Locomotive E188 Lew which was built by Manning Wardle in 1925 for the Southern Railway, who owned the line at the time.

Lew

Being the newest L&B loco (the others had all been in use since 1898), Lew was the only one that was not scrapped following the closure of the line in 1935, and was used to dismantle the line before being shipped overseas to South America (possibly Brazil) and an uncertain fate.

Although externally similar in appearance, to Lew, Lyd incorporates a number of modern design and construction techniques to improve overall efficiency. In order to navigate Garnedd tunnel, Lyd'''s cab is fitted with removable side panels to change the roof profile.

OperationLyd was first steamed on 2 May 2010 during Ffestiniog's Quirks and Curiosities event. Lyd was repainted into a primer coat black in July 2010. On 8 August 2010, Lyd first hauled a test train and, during Welsh Highland Railway's 2010 Superpower Weekend, was first used to hauled a passenger train.  On the weekend of 18–19 September 2010, Lyd visited the Launceston Steam Railway, followed up by a visit to Woody Bay on the Lynton & Barnstaple for their Autumn Gala Weekend in September 2010, accompanied by ex-Lynton & Barnstaple coach 15 (now Ffestiniog coach 14) and Ffestiniog coach 102.Lyd was painted in early 1950s British Railways lined black livery and carrying the number 30190. In September 2011, Lyd was repainted in Southern Railway Maunsell Green and numbered E190.

Initially completed as an oil-burner, but designed for easy conversion, Lyd was converted to coal-burning during the autumn of 2011, and was first fired with coal on 12 December.

In November 2012, Lyd was on static display at the NEC in Birmingham as the key exhibit of Lynton and Barnstaple World - an L&B-themed group of model railway layouts exhibited at the Warley National Model Railway Exhibition.

See also
Lyn (locomotive)
Rolling stock of the Lynton and Barnstaple Railway

References

External links

Photo of Lyd at Ffestiniog & Welsh Highland Railways - Press GalleryThe Lyd Project at Cymdeithas Rheilfford Eryri/Welsh Highland Railway Society''
Festipedia page on Ffestiniog Railway locomotives

2-6-2T locomotives
Railway locomotives introduced in 2010
Ffestiniog Railway
Lynton and Barnstaple Railway locomotives
Individual locomotives of Great Britain
2 ft gauge locomotives
Steam locomotives of the 21st century
Passenger locomotives
Narrow gauge locomotives of the United Kingdom
Max Maria von Weber. Max Maria von Weber (25 April 1822 in Dresden – 18 April 1881 in Berlin) was a German civil engineer who contributed to the development of railways in Austria and Germany.

He was born in Dresden in the Kingdom of Saxony, the son of the composer Carl Maria von Weber, and received his early training in the Dresden schools. Part of his experience was gained under Isambard Kingdom Brunel and George Stephenson in England. In 1850, he entered the civil service of his native kingdom. In 1870 he went to Vienna, where he did much toward the extension of Austrian railways. In 1878 he was called in a similar capacity to Berlin.

Writings
Outside of his official duties Weber found time for considerable writing, in the line of general literature as well as on technical matters. Among his works may be cited:

Schule des Eisenbahnwesens (1857), approximate translation Tutorial on Railways
Karl Maria von Weber; ein Lebensbild (1864–66), a biography of his father
Die Praxis des Baues und Betriebs der Sekundärbahnen (1873)
Nationalität und Eisenbahnpolitik (1876), approximate translation Nationality and Railway Politics
Vom rollenden Flügelrad (posthumously published by M. Jähns, with biography, 1882)

Notes

References

1822 births
1881 deaths
German civil engineers
Engineers from Dresden
People from the Kingdom of Saxony
Carl Maria von Weber
Max Maria