omniomni/omni-engineering huggingface dataset:
A Slower Speed of Light. A Slower Speed of Light is a freeware video game developed by MIT Game Lab that demonstrates the effects of special relativity by gradually slowing down the speed of light to a walking pace. The game runs on the Unity engine using its open-source OpenRelativity toolkit.

Gameplay 
In A Slower Speed of Light, the player controls the ghost of a young child who was killed in an unspecified accident. The child wants to "become one with light", but the speed of light is too fast for the child. This is solved through the use of magic orbs which, as each are collected, slow down the speed of light, until by the end it is at walking speed. These orbs are spread throughout the level. At the beginning of the game, walking around and collecting these orbs is easy; however, as the game progresses, the effects of special relativity become apparent. This gradually increases the difficulty of the game. After collecting all 100 orbs, a portal (as seen in the poster) appears. Entering the portal will open a tab explaining the effects of Special relativity, and will also show the time the game was finished in. The time the game was completed in is displayed with both the actual real world time as well as the time your character experienced, which differs due to the simulated effects of special relativity.

Effects of special relativity 
As the game progresses, the light becomes slower, and therefore the effects of special relativity start to become more apparent, increasing the difficulty of the game. These effects include the Doppler Effect (red/blue-shifting of visible light and the shifting of ultraviolet and infrared into the visible spectrum), the Searchlight Effect (increased brightness in the direction of travel), Time Dilation (difference between the passage of time perceived by the player and the outside world), Length Contraction and Terrell Rotation (the perceived warping of the environment at near-light speeds), and the runtime effect (seeing objects in the past because of the speed of light).

OpenRelativity 
OpenRelativity is a toolkit designed for use with the proprietary Unity game engine. It was developed by MIT Game Lab during the development of A Slower Speed of Light. The toolkit allows for the accurate simulation of a 3D environment when light is slowed down. It is hosted on GitHub and has been published under the permissive MIT license.

Use in education 
A Slower Speed of Light was developed in hopes of being used as an educational tool to explain special relativity in an easy-to-understand fashion. The game is meant to be used as an interactive learning tool for those interested in physics.

See also 
 Numerical relativity
 Special relativity

References

External links
Unofficial Speedrun page
Official game page

2012 video games
Educational games
Freeware games
Linux games
MacOS games
Windows games
Special relativity
Video games developed in the United States
Registered engineering technologist. In Canada, a registered engineering technologist (R.E.T.) is a person holding a particular category of membership of the Association of Science and Engineering Technology Professionals of Alberta (ASET). This designation is only used in the province of Alberta.

No new R.E.T. designations have been issued in Alberta since October 2009, following proclamation of the new provincial Engineering, Geological and Geophysical Professions Amendment Act. Existing R.E.T.'s in Alberta are not grandfathered into Alberta's newer P.Tech designation, as the certification criteria for a P.Tech. designation is different from the older R.E.T. designation. The R.E.T. designation in Alberta is being phased out over time. Existing R.E.T.'s may retain their title to the conclusion of their careers. However, no new R.E.T. applications are being accepted. One of the reasons that the R.E.T. designation being phased out is that it is only recognized in Alberta and is not transferable to any other province.

Professional titles and certifications
Professional certification in engineering
Licensed engineering technologist. A licensed engineering technologist (LET) is a class of licensee within Professional Engineers Ontario.

LET is a class of limited license authorized under the Professional Engineers Act of Ontario, which allows a holder to practice, and take responsible for the practice of engineering within a limited scope of work. A limited license may be provided in the case that a person has—through at least 13 years of specialised experience—become competent at a certain area of professional engineering. They may only practice within the scope of their license.

See also 
Engineering technologist

References

Professional certification in engineering
International engineering technologist. The international engineering technologist (IntET) designation of Canada is a professional certification recognized over provincial borders and over some national borders. Technology Professionals Canada offers this certification. It is awarded on the basis of academic qualification and work experience.

The IntET designation is recognized and protected in Australia, Canada, Hong Kong, Ireland, New Zealand, South Africa and the United Kingdom.

To qualify for this certification, a technologist must:
 be a certified engineering technologist in Canada
 have a minimum of seven years practical work experience
 have a minimum of two years in a management or supervisory role
 agree to be bound by an international code of ethics
 demonstrate professional development activities for the past 5 years

References

Professional titles and certifications
Professional certification in engineering
Applied science technology and engineering technology in Canada. In Canada, a new occupational category of "technologist" was established in the 1960s in conjunction with an emerging system of community colleges and technical institutes.  It was designed to effectively bridge the gap between the increasingly theoretical nature of engineering science degrees and the predominantly practical approach of technician and trades programs.  Provincial associations may certify individuals as a professional technologist (P.Tech), certified engineering technologist (C.E.T.), registered engineering technologist (R.E.T.), applied science technologist (AScT) or technologue professionel (T.P.).  These provincial associations are constituent members of the Canadian Council of Technicians and Technologists (CCTT), which nationally accredits technology programs across Canada through its Canadian Technology Accreditation Board (CTAB).  Nationally accredited engineering technology programs range from two to three years in length, depending on province, with two-year programs leading to a C.Tech. certification and three-year programs usually leading to an AScT, CET or RET certification.

References

Education in Canada
Association of Engineering Technicians and Technologists of Newfoundland and Labrador. The Association of Engineering Technicians and Technologists of Newfoundland and Labrador (AETTNL) is Newfoundland and Labrador's independent certifying body for engineering/applied science technicians and technologists.

AETTNL confers the post-nominal designations of C
.Tech. (certified technician), P. Tech (professional technologist), and A.Sc.T. (applied science technologist) which are symbols of achievement in engineering/applied science technology and are legally protected for use only by fully certified members in good standing. The designations are recognized across Canada by many employers and other engineering professionals through the efforts of provincial associations of engineering technology.

Until 2010, AETTNL was a member of the Canadian Council of Technicians and Technologists (CCTT).  Through CCTT being a signatory, The association recognizes international transferability through the Sydney Accord, the Dublin Accord and the Engineering Technology Mobility Forum, which confers the ability to award the designation IntET(Canada) for Technologists who wish to work internationally. In 2010, a number of different provincial associations of engineering technology left CCTT. Unlike the other associations, AETTNL has not joined Technology Professionals Canada.

The professional technologist designation in Newfoundland is not the same as the professional technologist designation in Alberta and British Columbia. The P. Tech designation in Newfoundland is equivalent to a certified engineering technologist (C.E.T.) designation in many other provinces.

The Association of Engineering Technicians and Technologists of Newfoundland and Labrador, under the name  Association of Engineering Technicians and Technologists of Newfoundland (AETTN), was established in 1968.

Unlike every other association or society of engineering technicians and technology in Canada, AETTNL operates as a corporation. Rather than having a specific act of parliament in effect to empower the association to regulate their certifications, they rely on the CCTT's ownership of copyrights to different certifications. They have used that flexibility to give their members a different title.

Certified engineering technologists are bound by a specific code of ethics and rules of professional conduct.

See also
Engineering technologist
Engineering Technology

References

External links
Association of Engineering Technicians and Technologists of Newfoundland and Labrador official page

Mount Pearl
Professional associations based in Newfoundland and Labrador
Engineering societies based in Canada
Professional certification in engineering
Mangal Lake (Chennai). Mangal aeri, or Mangal lake, is a rain-fed reservoir in the neighbourhood of Mugappair in Chennai, India.

History
The lake served as a water source for the village of Mugappair several hundred years ago. However, the lake started deteriorating since the establishment of Ambattur Industrial Estate abutting it owing to letting in of waste water from the industrial units. In 2005, renovation of the lake began at a cost of  2 million, with building a compound wall around an area of 30 acres. In July 2009, the first phase of the renovated lake was opened to public at a cost of  6 million.

Infrastructure
The water body is spread over an area of 5.32 acres. In the first phase of renovation, a walkers' track measuring 4.5 m in width and 520 m in length was constructed around the lake and lighting facility was provided. Locations for children's play area was demarcated and a vacant space of about 20,000 sq ft was earmarked for a new park to be set up at a cost of  2.5 million in the second phase.

There is an Achalathamman temple on the bank of the lake.

The second phase of the project, however, has not yet been started.

See also

Water management in Chennai

References

Lakes of Chennai
Lakes of Tamil Nadu
Order of Professional Technologists of Quebec. The Ordre des technologues professionnels du Québec is Quebec's independent certifying body for engineering/applied science technicians and technologists.

Ordre des technologues professionnels du Québec is a constituent member of the Canadian Council of Technicians and Technologists, and as such recognizes international transferability through the Sydney Accord, the Dublin Accord and the Engineering Technology Mobility Forum, which confers the ability to award the designation IntET(Canada) for Technologists who wish to work internationally.

Certification in Quebec is called "professional technologist", or "technologue professionnel" status. Unlike Alberta's Professional Technologist (Engineering) designation, which is a limited license to practice professional engineering within a limited scope, Quebec's professional technologist designation is equivalent to a certified engineering technologist designation and thus is not a license to practice professional engineering.

Members are governed by the "Code des professions du Québec" and the "Code de déontologie des technologues professionnels", and perform according to accepted norms and standards in the industry.

References

Organizations based in Quebec
Professional associations based in Canada
Professional certification in engineering
METIS. METIS is a software package for graph partitioning that implements various multilevel algorithms. METIS' multilevel approach has three phases and comes with several algorithms for each phase:
 Coarsen the graph by generating a sequence of graphs G0, G1, ..., GN, where G0 is the original graph and for each 0 ≤ i ≤ j ≤ N, the number of vertices in Gi is greater than the number of vertices in Gj.
 Compute a partition of GN
 Project the partition back through the sequence in the order of GN, ..., G0, refining it with respect to each graph.
The final partition computed during the third phase (the refined partition projected onto G0) is a partition of the original graph. 

According to Metis authors Karypis and Kumar, "Metis is the Greek word for wisdom. Metis was a titaness in Greek mythology. She was the consort of Zeus and the mother of Athena. She presided over all wisdom and knowledge".

References

External links
 METIS website

Graph algorithms
Mathematical software
Eurofly Fox. The Eurofly Fox is an Italian ultralight aircraft that was designed and produced by Eurofly srl of Galliera Veneta. When it was available the aircraft was supplied as a complete ready-to-fly-aircraft or as a kit for amateur construction.

Design and development
The aircraft was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of . The Fox features a strut-braced parasol wing, a two-seats-in-side-by-side configuration open cockpit with a windshield, fixed tricycle landing gear with wheel pants and a single engine in pusher configuration.

The aircraft is made from mixed steel and aluminum tubing, with its flying surfaces covered in Dacron sailcloth envelopes. Its  span wing has no flaps and has a wing area of . Each wing is supported by two parallel struts with jury struts. The standard engine used is the  Rotax 503 two-stroke powerplant.

Variants
Basic Fox
Stripped down version with minimal options, designed as a trainer.

Specifications (Basic Fox)

References

Fox
1990s Italian sport aircraft
1990s Italian ultralight aircraft
Single-engined tractor aircraft
Parasol-wing aircraft
Homebuilt aircraft
Eurofly Fire Fox. The Eurofly Fire Fox (sometimes Firefox) is an Italian ultralight aircraft designed and produced by Eurofly srl of Galliera Veneta. The aircraft is supplied as a complete ready-to-fly-aircraft or as a kit for amateur construction.

Design and development
The aircraft was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of . The Fire Fox features a strut-braced high-wing, a two-seats-in-tandem enclosed cockpit, fixed tricycle landing gear with wheel pants and a single engine in pusher configuration.

The aircraft is made from a combination of ALS 500 steel tubing and 6082 aluminium alloy tubing, with its flying surfaces covered in Dacron sailcloth. Its  span wing lacks flaps and has a wing area of . Each wing is supported by two parallel struts with jury struts. The standard engine used is the  Rotax 503 two-stroke powerplant.

The Fire Fox has a typical empty weight of  and a gross weight of , giving a useful load of . With full fuel of  the payload for pilot, passengers and baggage is .

Variants
Fire Fox
Base model
Fire Fox 2000
Fully equipped variant including electric flaps.

Specifications (Fire Fox)

References

External links

Eurofly Fire Fox photo

Fire Fox
1990s Italian sport aircraft
1990s Italian ultralight aircraft
Single-engined tractor aircraft
High-wing aircraft
Homebuilt aircraft
Annual Review of Environment and Resources. The Annual Review of Environment and Resources is a peer-reviewed scientific journal that publishes review articles about environmental science and environmental engineering. It was first published in 1976 under the name the Annual Review of Energy. In 1991, the name was changed to the Annual Review of Energy and the Environment; it was again retitled in 2003 to the Annual Review of Environment and Resources. Beginning in 2020, it was published open access under the Subscribe to Open (S2O) publishing model.

History
The first volume of the journal was published in by Annual Reviews in 1976, under the title the Annual Review of Energy. One of the events that sparked its creation was the 1970s energy crisis. Unlike previous Annual Reviews titles, its subject area was interdisciplinary and lacked a history of literature. The first volume covered the energy system of the United States, and the journal's first editor was Jack M. Hollander.

In 1991, the journal's name was changed to the Annual Review of Energy and the Environment. This was done in recognition that energy research and issues were interconnected with environmental issues. In 2003, the focus on the environment was further emphasized with an additional name change, to the Annual Review of Environment and Resources. Content published in the journal relates to environmental science and environmental engineering, such as ecology, conservation biology, energy development, hydrology, climate change, oceanography, and agriculture.

Under Annual Reviews's Subscribe to Open publishing model, it was announced that the 2020 volume of Annual Review of Environment and Resources would be published open access, a first for the journal. As of 2020, it was published both in print and electronically.

Abstracting and indexing

According to the Journal Citation Reports, the journal has a 2023 impact factor of 15.5 ranking it third of 182 journals in the category "Environmental Studies (SSCI)" and sixth of 358 journals in the category "Environmental Science (SCIE)".

Editors of volumes
Dates indicate publication years in which someone was credited as a lead editor or co-editor of a journal volume. The planning process for a volume begins well before the volume appears, so appointment to the position of lead editor generally occurred prior to the first year shown here. An editor who has retired or died may be credited as a lead editor of a volume that they helped to plan, even if it is published after their retirement or death.

Jack M. Hollander (1975–1992)
Robert H. Socolow (1993–2002)
Pamela Matson (2003–2008)
Ashok Gadgil and Diana Liverman (2009–2014)
 Gadgil, Liverman and Thomas P. Tomich (2015)
 Gadgil & Tomich (2016–present)

References

External links

 

Environment and Resources
Environmental science journals
Academic journals established in 1976
Annual journals
English-language journals
CCE MC-1000. The MC-1000 CCE Color Computer was a home computer produced in Brazil by CCE (Indústria e Comércio de Componentes Eletrônicos S/A) and released in February 1985.  

The machine shares some hardware heritage with the GEM 1000 (advertised in Belgium) and the Rabbit RX83, systems produced in Hong-Kong by the firm Rabbit Computers. Like the Sinclair Spectrum, BASIC commands were typed by pressing a single key.  

It was not popular due to outdated technical specifications and lack of compatibility with established 8-bit systems of the time.

History
The GEM 1000 Junior Computer, also known as Charlemagne 999 in France, was a low cost toy Home computer for children from 5 years upwards, produced in Taiwan by Rabbit Computers of Hong Kong. It was part of a family consisting of the GEM 1000, 2000, 3000 and 4000 systems. 

The GEM 1000 only had 16 KB of RAM, and BASIC commands were typed by pressing a single key. The BASIC dialect was similar Applesoft BASIC, with the Charlemagne 999 having a version that used French instead of English keywords. 

The Rabbit RX83 had just 2K of RAM, being limited to displaying 32×16 characters in 8 colors or 128×64 graphics with 2 background and 3 foreground colors. It was launched at the 1983 edition of the Consumer Electronics Show with a price of just US$99.

The MC-1000 was similar to these machines, but released years later in 1985, when the Brazilian market was already saturated with cheap machines offering similar features. As such, it did not attract much attention even though it was touted as a "Brazilian computer". 

The fact that it was not a clone of popular 8-bit systems (like the Apple, TRS-80 or the Sinclair Spectrum) did not contribute to its popularity. In addition to poor design and having a chiclet keyboard, the MC-1000 had only 16 KB of RAM which was small by the standards of the time. 

The machine was commercialized up to 1986.

Technical specifications
 CPU: Zilog Z80A, 3.57 MHz
 Memory: 16 KB RAM expandable to 64 KB; 8 KB ROM; up-to 6 KB VRAM
 Keyboard: 50-key rubber Chiclet keyboard
 Display: Motorola MC6847 (32×16 text in 8 colors; 128×64, 128×96, 128×192, 256×192 graphics with 2 background and 3 foreground colors)
 Sound: AY-3-8910 (3 voices and white noise)
 Ports: cassette recorder interface (1200 bit/s), TV output connector, joystick

Emulation
Like similar early home computers, the MC-1000 can be emulated on modern machines.

Video games

10 games are known to exist for CCE MC-1000, all released in Brazil.

 Aventura
 Batalha Aeronaval
 Batalha de Matemática
 Guerra de Robos
 Invasores do Espaço
 Jipe de Guerra
 Jogo da Forca I
 Jogo da Forca II
 Jogo de Memória
 Othello

References

Computers designed in Brazil
Computer-related introductions in 1985
Goods manufactured in Brazil
Home computers
Products introduced in 1985
Z80-based home computers
Eurofly Fire Cat. The Eurofly Fire Cat is an Italian ultralight aircraft that was designed and produced by Eurofly srl of Galliera Veneta. Now out of production, when it was available the aircraft was supplied as a complete ready-to-fly-aircraft or as a kit for amateur construction.

Design and development
The Fire Cat was designed to comply with the Fédération Aéronautique Internationale microlight category, including the category's maximum gross weight of . The Fire Cat features a strut-braced high-wing, a two-seats-in-side-by-side configuration enclosed cockpit, fixed tricycle landing gear with wheel pants and a single engine in pusher configuration.

The aircraft is made from aluminum tubing, with its flying surfaces covered in Dacron sailcloth envelopes. Its  span wing lacks flaps and has a wing area of . Each wing is supported by two parallel struts with jury struts. The standard engine used is the  Rotax 503 two-stroke powerplant with standard electric start.

The Fire Cat has a typical empty weight of  and a gross weight of , giving a useful load of . With full fuel of  the payload for pilot, passengers and baggage is .

Specifications (Fire Cat)

References

External links
Photo of a Fire Cat

Fire Cat
1990s Italian sport aircraft
1990s Italian ultralight aircraft
Single-engined tractor aircraft
High-wing aircraft
Homebuilt aircraft