omniomni/omni-engineering huggingface dataset:
Maristes footbridge, Lleida. The Pedestrian Bridge over the Segre River is a bridge in Lleida, Catalonia, Spain. In 2000, Lleida City Council organized an open competition for a new pedestrian bridge.  It marks the entrance to the campus and functions as a communication and public space.

Description

The bridge consists of four longs spans embedded into three slender reinforced concrete piers. The abutments are integrated into both existing and new walls. In this way, an integral bridge (without joints at piers) is obtained.

Translucent composite materials (GFRP)-(Fiberglass) have been used in the form of structural floor panels and wall panels for both the railing and the flooring.

Construction

The structure is designed with a double composite action. The steel box girder was assembled using temporary support.

References

External links
 

 

 

Fiberglass
Pedestrian bridges in Spain
Bridges in Catalonia
Buildings and structures in Lleida
Automated Customer Account Transfer Service. Automated Customer Account Transfer Service (ACATS) is an almost entirely electronic system in the United States that executes the transfer of financial securities from a trading account at one institution to the trading account at another. ACATS was developed by the National Securities Clearing Corporation (NSCC), now a subsidiary of Depository Trust & Clearing Corporation (DTCC), a private holding company owned collectively by banks and financial institutions that handles the settlement of the vast majority of securities transactions in the United States.

In 2023, the Financial Industry Regulatory Authority (FINRA) issued new rules regarding ACATS because of concerns about an increase in ACATS fraud. In this type of fraud, the attacker steals a victim's identity, opens a new brokerage account in the victim's name, and issues an ACATS request to transfer securities from the victim's true brokerage account to the new one.

References

Financial software
Alexium International. Alexium International Group Limited is an advanced materials company headquartered in Melbourne, Victoria with operations in Greer, South Carolina.

Alexium has a presence in the United States and Australia, and is listed on the Australian Securities Exchange (ASX:AJX).

History 

Alexium was established to develop technology supported by a strategic relationship with the U.S. Department of Defense. Alexium's Reactive Surface Treatment (RST) platform technology was originally developed in the research labs by the U.S. Air Force in response to threats from chemical and biological warfare agents.

After listing on the ASX in 2010, Alexium began building a team of business professionals, engineers, scientists and technical consultants in three global locations. In addition to the corporate head office in Melbourne, Alexium maintains a 25,000 square-foot operations headquarters, which includes executive offices, production laboratories, and R&D laboratories in Greer, South Carolina.

Since then, Alexium's technology has evolved and advanced in a number of markets with a focus on thermal management technologies and flame retardants.

Environmental record 
Traditional FR products contain bromides and halogens, which are currently being investigated in the US for environmental concerns. The global demand for non-halogenated FR products is growing, and many companies—including Alexium—are working to meet the demand for FR products that do not use bromides or halogens. Alexium is also working to meet or exceed the new c6 fluorocarbon requirements.

References

Chemical companies of Australia
Manufacturing companies based in Melbourne
Companies listed on the Australian Securities Exchange
Melba Roy Mouton. Melba Roy Mouton (April 28, 1929 – June 25, 1990) was an African American mathematician who served as Assistant Chief of Research Programs at NASA's Trajectory and Geodynamics Division in the 1960s and headed a group of NASA mathematicians called "computers". She served as Head Mathematician for Echo Satellites 1 and 2 before becoming Head Computer Programmer and then Program Production Section Chief at Goddard Space Flight Center.

Early life and education 

Melba Louise Chloe was born in 1929, in Fairfax, Virginia to Rhodie and Edna Chloe (née Robinson). She graduated from Howard University in 1950 with a master's degree in mathematics, after receiving a bachelor's degree in mathematics with a minor in physics. While at Howard, Mouton was president of the Kelly Miller Chapter of Future Teachers of America and a member of the NAACP, the Mathematics Club, and the Delta Sigma Theta sorority. She also was on the Dean's Honor Roll for four years, and was selected for the 1949-1950 Who’s Who among Students in American Universities and Colleges.

Career 

She started working for NASA in 1959, after working for the Army Map Service and the Census Bureau. The following year, Echo 1 was put into orbit, and Mouton led a team of NASA mathematicians (known as "computers") in tracking its orbit. While at Goddard, Mouton was an instructor for a series of seminars on A Programming Language held at Watson Research Labs. In a NASA symposium, she published a paper about the importance of investing in thorough, descriptive program documentation for projects which are to be maintainable over time. She was also prominently featured alongside some of her African American colleagues in an advertisement in the Afro American designed to spotlight NASA's diversity. Mouton received both an Apollo Achievement Award and an Exceptional Performance Award from NASA before she retired in 1973.

Personal life 
Mouton had three children and was married twice, first to Wardell Roy and later to Webster Mouton. She died in Silver Spring, Maryland, on June 25, 1990, of a brain tumor at the age of 61.

Commemoration 
In May 2022, lunar mountain Mons Mouton (previously known informally as Leibnitz Beta of the Leibnitz plateau) at the lunar south polar region was named officially in her honor. It is scheduled to become the landing site of the Volatiles Investigating Polar Exploration Rover (VIPER).

References 

1929 births
1990 deaths
Deaths from brain cancer in the United States
Howard University alumni
NASA people
People from Fairfax, Virginia
20th-century American mathematicians
African-American mathematicians
African-American women mathematicians
20th-century American women mathematicians
Mathematicians from Virginia
American women computer scientists
American computer scientists
African-American computer scientists
20th-century African-American women
20th-century African-American people
Rogers Sportaire. The Rogers Sportaire is an American homebuilt aircraft that was designed David M. Rogers and produced by Rogers Aircraft of Riverside, California, introduced in 1959. The aircraft was supplied in the form of plans for amateur construction, but plans are no longer available. Only one was built.

Design and development
The aircraft features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear and a single engine in tractor configuration.

The aircraft fuselage is made from welded steel tubing, with the  span wing made from wood, all covered in doped aircraft fabric. The engine used in the sole example is  a  Lycoming O-290 powerplant.

The aircraft has an empty weight of  and a gross weight of , giving a useful load of . With full fuel of  the payload is .

Operational history
By October 2013 only one example had been registered in the United States with the Federal Aviation Administration.

Specifications (Sportaire)

References

External links
Photo of the Sportaire airframe under restoration
Photo of the Sportaire instrument panel under restoration
Photo of the Sportaire dataplate

Sportaire
1950s United States sport aircraft
Single-engined tractor aircraft
Low-wing aircraft
Homebuilt aircraft
Bazzocchi EB.2. The Bazzocchi EB.2 was a one off, Italian single seat glider designed and built by a university student in 1936, his second design of the year.

Design and development
Ermanno Bazzucchi was a nineteen-year-old student at the Polytechnic University of Milan when he designed and built his first aircraft, the EB.1 Littore, in 1936. The EB.2, a simpler and lower performance glider with a shorter span and straight edged tail surfaces followed it in the same year, built by students of Tradate Bishop College.

The EB.2 was a high wing braced monoplane.  Each wing was built around a single spar; in plan they were unswept and of parallel chord, ending in blunted tips.  Ailerons filled almost half the span. Centrally mounted above the fuselage on a pedestal with about 2° of dihedral, they were braced to the fuselage on each side by a single faired wooden strut which ran from just inside mid-span to the bottom of the fuselage.

The cross section of the EB.2's wooden fuselage was rhomboidal with its diagonals vertical and horizontal, defined by lattice work and fabric covered. Its open cockpit was immediately ahead of the wing, placing the pilot's head against the front of the central pedestal. There was a straight tapered fin and rudder; the latter extended a little below the keel, where it was protected by a small tail bumper.  Its braced, blunt tipped and constant chord tailplane was set forward on top of the fuselage with the unbalanced elevator's trailing edge only just reaching the fin leading edge. A simple wooden skid served as the undercarriage.

Specifications

References

1930s Italian sailplanes
Aircraft first flown in 1936
High-wing aircraft
Hexachlorodisilane. Hexachlorodisilane is the inorganic compound with the chemical formula Si2Cl6. It is a colourless liquid that fumes in moist air. It has specialty applications in as a reagent and as a volatile precursor to silicon metal.

Structure and synthesis
The molecule adopts a structure like ethane, with a single Si-Si bond length of 233 pm. 

Hexachlorodisilane is produced in the chlorination of silicides such as e.g. calcium silicide.  Idealized syntheses are as follows:
CaSi2 + 4 Cl2 → Si2Cl6 + CaCl2

Reactions and uses
Hexachlorodisilane is stable under air or nitrogen at temperatures of at least up to 400°C for several hours, but decomposes to dodecachloroneopentasilane and silicon tetrachloride in presence of Lewis bases even at room temperature.

4 Si2Cl6 → 3 SiCl4 + Si5Cl12

This conversion is useful in making silicon-based components of use in semiconducting devices including photovoltaic cells.

The compound is also useful reagent for the deoxygenation reactions, such as this general process involving a phosphine oxide:
2 Si2Cl6 + OPR3 → OSi2Cl6 + PR3

References

Chlorosilanes
Government College of Engineering, Chandrapur. The Government College of Engineering, Chandrapur (GCOEC) was established in 1996 in Chandrapur, Maharashtra, India. It is affiliated to Gondwana University. It is the only government institute under Gondwana University, Gadchiroli. It is completely funded by Government of Maharashtra. GCOEC is situated in the city of a super thermal power plant and at the center of the region with abundant coal. The region contributes in fulfilling the demand of energy resource as well as power of the country while, GCOEC promises to fulfill quality technical human resource needed for these sectors in India. The college is accredited by Directorate of Technical Education (DTE), Maharashtra and All India Council of Technical Education (AICTE).

Campus
The college campus covers an area of . The campus has a centralized library, a gymkhana.

Organisation and administration

Departments 
The college offers degrees in the following six disciplines of engineering:
 Instrumentation Engineering 
 Electrical Power Engineering 
 Mechanical Engineering 
 Computer Science Engineering
 Civil Engineering
 Electronics and Telecommunication Engineering
 Applied Mechanics Department
 Mathematics Department
 Physics Department
 Chemistry Department
 Humanities Department

PG Section
College started post graduation, i.e. Master's degree programs, from 2019 to 2020 in the following disciplines:
 Mechanical Eng.
 Electrical Power System

Academics

Admissions 
Admission criteria are based on the MHT-CET / JEE-Main rankings.

See also 
 Government Medical College, Chandrapur

References

External links

Engineering colleges in Maharashtra
Chandrapur
Educational institutions established in 1996
1996 establishments in Maharashtra
Marcel Escudier. Marcel Escudier is Professor Emeritus of mechanical engineering of the School of Engineering at the University of Liverpool.

He became a Fellow of the Royal Academy of Engineering in 2000. Escudier is a fellow of the Institution of Mechanical Engineers and of the City and Guilds of London Institute.

As well as more than 60 papers published in scholarly journals, Escudier is the author of The Essence of Engineering Fluid Mechanics published by Prentice Hall Europe in 1998 and recently co-authored A Dictionary of Mechanical Engineering, published by Oxford University Press in 2013.

References

Living people
English mechanical engineers
Date of birth missing (living people)
Year of birth missing (living people)
Academics of the University of Liverpool
NVS Telematic Systems. NVS Telematic System Ltd is a Russian company that builds technology and equipment controlled by signals from satellite navigation systems GLONASS and GPS; it was founded in 2011 and is part of the Navis Group. Developing equipment for satellite monitoring of transport is the company's main business. NVS Telematic System is involved in the development, production organization, distribution and servicing of the navigation equipment for commercial and private use.

History
The company was founded in 2011 as a satellite of KB Navis, carrying out production of onboard navigation devices in the "Signal" series.
In 2012, the Navitrack equipment series was created. A state contract for delivery of automobile navigation equipment GLONASS/GPS and the automated workplaces (AW) of monitoring of vehicles in Federal Customs Service of Russia was executed. Works were carried out in the territory of 36 subjects of the Russian Federation in 49 regional divisions of Federal Customs Service of Russia. NVS Telematic equipped 486 vehicles and 26 automated workplaces with GLONASS/GPS navigation devices in the Signal series. 
Cooperation between the NAVIS Group and the Federal Customs Service of Russia resulted in the creation of complex system interconnected with system of electronic declaring by means of a multimedia traffic in real time for monitoring and control of passing customs freights without opening any containers.
In 2013, a device for satellite monitoring of transport Navitrek UM-04 went into mass production. A search beacon, Navitrek UM-02, functioning on GLONASS/GPS systems together with base stations GSM, was developed. Satellite monitoring of transport by the Navionis product was developed as a web interface. All equipment was adapted under the state project ERA-GLONASS. Introduction of the quality system of management ISO 9001:2008

References 

GLONASS
manufacturing companies based in Moscow
Technology companies established in 2011
Russian brands
Technology companies of Russia
Russian companies established in 2011
All-in-one computer. An all-in-one computer (also called an AIO or all-in-one PC) is a type of personal computer that integrates the computer components, such as the CPU, monitor, and speakers, into a single unit. It occupies a smaller footprint than a desktop computer with a tower form factor, and also uses fewer cables.

Advantages and disadvantages
Some advantages of the all-in-one computer compared to other form factors include being easier to set up, a reduced physical footprint, ease of transportation, and the option to interface with the computer via touchscreen (a now-common fixture on all-in-ones). Some disadvantages include generally being more expensive than desktop computers, a lack of customizability—most of the internal hardware such as the RAM and the SSD, especially in post-late-2010s machines, is soldered onto the system board—a lack of upgrade paths for the CPU, RAM, and technology of the display, and the difficulty of repair. The design causes it to overheat, it forces all of the components to be close together and causes minimal airflow. Having more powerful processors and graphic cards causes overheating which leads to inefficiencies.

History

This form factor was popular during the early 1980s for personal computers intended for professional use such as the Commodore PET, the Osborne 1, the TRS-80 Model II, and the Datapoint 2200. Many manufacturers of home computers like Commodore and Atari included the computer's motherboard into the same enclosure as the keyboard; these systems were most often connected to a television set for display. Apple has manufactured several popular examples of all-in-one computers, such as the compact Macintoshes of the mid-1980s and early 1990s, the Macintosh LC 500 series in the mid-1990s, the eMac from 2002 to 2006, and the iMac series since 1998 to the present. 

Since the early 2000s, some all-in-one desktops, such as the iMac G4, have used laptop components in order to reduce the size of the system case. By the mid 2000s, many all-in-one designs have used flat-panel displays (chiefly LCDs), and later models have incorporated touchscreen displays, allowing them to be used similarly to a mobile tablet. 

Like most laptops, some all-in-one desktop computers are characterized by an inability to customize or upgrade internal components, as the systems' cases do not provide convenient access to upgradable components, and faults in certain aspects of the hardware may require the entire computer to be replaced, regardless of the health of its remaining components. There have been exceptions to this; the monitor portion of HP's Z1 workstation can be angled flat, and opened like a vehicle hood for access to internal hardware.

See also
 2-in-1 PC
 Internet appliance
 Laptop
 Portable computer
 Keyboard computer
 Desktop form factor

References

 
Classes of computers
Personal computers
Polling system. In queueing theory, a discipline within the mathematical theory of probability, a polling system or polling model is a system where a single server visits a set of queues in some order. The model has applications in computer networks and telecommunications, manufacturing and road traffic management. The term polling system was coined at least as early as 1968 and the earliest study of such a system in 1957 where a single repairman servicing machines in the British cotton industry was modelled.

Typically it is assumed that the server visits the different queues in a cyclic manner. Exact results exist for waiting times, marginal queue lengths and joint queue lengths at polling epochs in certain models. Mean value analysis techniques can be applied to compute average quantities.

In a fluid limit, where a very large number of small jobs arrive the individual nodes can be viewed to behave similarly to fluid queues (with a two state process).

Model definition

A group of n queues are served by a single server, typically in a cyclic order 1, 2, …, n, 1, …. New jobs arrive at queue i according to a Poisson process of rate λi and are served on a first-come, first-served basis with each job having a service time denoted by an independent and identically distributed random variables Si.

The server chooses when to progress to the next node according to one of the following criteria:
 exhaustive service, where a node continues to receive service until the buffer is empty.
 gated service, where the node serves all traffic that was present at the instant that the server arrived and started serving, but subsequent arrivals during this service time must wait until the next server visit.
 limited service, where a maximum fixed number of jobs can be served in each visit by the server.
If a queueing node is empty the server immediately moves to serve the next queueing node.

The time taken to switch from serving node i − 1 and node i is denoted by the random variable di.

Utilization 

Define ρi = λi E(Si) and write ρ = ρ1 + ρ2 + … + ρn. Then ρ is the long-run fraction of time the server spends attending to customers.

Waiting time

Expected waiting time

For gated service, the expected waiting time at node i is

and for exhaustive service

where Ci is a random variable denoting the time between entries to node i and

The variance of Ci is more complicated and a straightforward calculation requires solving n2 linear equations and n2 unknowns, however it is possible to compute from n equations.

Heavy traffic

The workload process can be approximated by a reflected Brownian motion in a heavily loaded and suitably scaled system if switching servers is immediate and a Bessel process when switching servers takes time.

Applications

Polling systems have been used to model Token Ring networks.

External links
 Bibliography on polling models (papers published 1984–1993) by Hideaki Takagi

References

Queueing theory
The Linux Programming Interface. The Linux Programming Interface: A Linux and UNIX System Programming Handbook is a book written by Michael Kerrisk, which documents the APIs of the Linux kernel and the GNU C Library (glibc).

Book
The book covers topics related to the Linux operating system and operating systems in general. It chronicles the history of Unix and how it led to the creation of Linux. The book provides samples of code written in C, and learning exercises at the end of chapters. The author is a former writer for the Linux Weekly News and the current maintainer for the Linux man pages project.

The Linux Programming Interface has been translated into several languages.

See also 

 Linux kernel interfaces
 Programming Linux Games

References

External links
 The Linux Programming Interface at the publisher's (No Starch Press) Website
 The Linux Programming Interface Description at Kerrisk's Website
 API changes
 The Linux Programming Interface Traditional Chinese Translation

Computer programming books
Books about Linux
2010 non-fiction books
No Starch Press books
Interfaces of the Linux kernel
John Watt (physicist). John Watt (born c.1932) is an Australian physicist, former Assistant Chief of the CSIRO Division of Mineral and Process Engineering, and Australia Prize winner.

Watt was educated at the University of Sydney where he obtained a Master of Science degree in 1956. From around 1956 to 1967 he was a Research Officer with the Australian Atomic Energy Commission.

John Watt started work with the Australian Atomic Energy Commission (AAEC) as a Research Officer after graduating from The University of Sydney in 1956 with a Master of Science. He worked in the AAEC Isotope Division, becoming Head of the Radioisotope Applications Research Section in 1967.
In 1982, he was transferred to the CSIRO Division of Mineral Physics as a Chief Research Scientist and Officer-in-Charge of the Division's Lucas Heights and Port Melbourne sites. He was appointed an Assistant Chief of the CSIRO Division of Mineral and Process Engineering in 1985, and returned to full-time research work as a CSIRO Fellow in 1995. He retired from CSIRO in 1997.
John's research has covered a whole range of on-line analysis applications in the minerals, coal and oil industries. He pioneered this research in Australia, developing a balance between laboratory research and field trials. He also undertook the first major commercialisation of on-line mineral slurry analysis systems in the early 1970s, which led to the setting up of the on-line analysis manufacturing industry in Australia. 

In 1991 Watt achieved an Australian Nuclear Association Award. In 2003 Watt was awarded a Centenary Medal for service to Australian society in applied physics.

References

Australian physicists
Living people
1935 births
Australia Prize recipients