omniomni/omni-engineering huggingface dataset:
Utkan Demirci. Utkan Demirci  is a tenured professor and a successful serial academic entrepreneur at Stanford University at the departments of Radiology and Electrical Engineering (by courtesy). He served as the Interim Division Chief and Director of the Canary Center at Stanford for Cancer Early Detection in the Department of Radiology.

Education 
Demirci received his B.S. degree in electrical engineering in 1999 as a James B. Angell Scholar (summa cum laude) from University of Michigan in Ann Arbor. He received his M.S. degree in 2001 in electrical engineering, his M.S. degree in management science and engineering in 2005, and his Ph.D. in electrical engineering in 2005, all from Stanford University.

Research
Before returning to Stanford, Demirci was an associate professor of medicine at Brigham and Women's Hospital, Harvard Medical School and at Harvard-MIT Division of Health Sciences and Technology serving at the Division of Biomedical Engineering, Division of Infectious Diseases and Renal Division. In 2006, he was named in the MIT Technology Review TR35 as one of the top 35 innovators in the world under the age of 35. 

Demirci serves as the principal investigator for the Bio-acoustic MEMS in Medicine Lab (BAMM) at the Canary Center at Stanford University for Cancer Early Detection. He has published over 200 peer-reviewed journal articles, and seven edited books. He has received the NSF CAREER Award, and IEEE EMBS Early Career Award. He is a fellow of the American Institute for Medical and Biological Engineering (AIMBE), and Distinguished Investigator of the Academy for Radiology and Biomedical Imaging Research; and serves as an editorial board member for a number of peer-reviewed journals. His work in microfluidics has led to the development of FDA-approved platform technologies in medicine and many of his inventions have been industry licensed. The Zymot tool, that he has translated from his lab to the clinic has already been utilized in over 500,000 clinical cases, revolutionizing the processing and selection of sperm cells in IVF clinics and IUI applications. He is the co-founder of DxNow, Zymot, Levitas Bio, Hermes Bio and serves as advisor to early stage companies.

References

External links 
 Demirci's biosketch web site
 DxNow 
 Zymot
 Levitas Bio

Year of birth missing (living people)
Living people
University of Michigan College of Engineering alumni
Stanford University School of Engineering alumni
Harvard Medical School faculty
Kadıköy Anadolu Lisesi alumni
Sinusoidal model. In statistics, signal processing, and time series analysis, a sinusoidal model is used to approximate a sequence Yi to a sine function:

where C is constant defining a mean level, α is an amplitude for the sine, ω is the angular frequency, Ti is a time variable, φ is the phase-shift, and Ei is the error sequence.

This sinusoidal model can be fit using nonlinear least squares; to obtain a good fit, routines may require good starting values for the unknown parameters.
Fitting a model with a single sinusoid is a special case of spectral density estimation and least-squares spectral analysis.

Good starting values

Good starting value for the mean

A good starting value for C can be obtained by calculating the mean of the data. If the data show a trend, i.e., the assumption of constant location is violated, one can replace C with a linear or quadratic least squares fit. That is, the model becomes

or

Good starting value for frequency

The starting value for the frequency can be obtained from the dominant frequency in a periodogram. A complex demodulation phase plot can be used to refine this initial estimate for the frequency.

Good starting values for amplitude

The root mean square of the detrended data can be scaled by the square root of two to obtain an estimate of the sinusoid amplitude. A complex demodulation amplitude plot can be used to find a good starting value for the amplitude. In addition, this plot can indicate whether or not the amplitude is constant over the entire range of the data or if it varies. If the plot is essentially flat, i.e., zero slope, then it is reasonable to assume a constant amplitude in the non-linear model. However, if the slope varies over the range of the plot, one may need to adjust the model to be:

That is, one may replace α with a function of time. A linear fit is specified in the model above, but this can be replaced with a more elaborate function if needed.

Model validation

As with any statistical model, the fit should be subjected to graphical and quantitative techniques of model validation. For example, a run sequence plot to check for significant shifts in location, scale, start-up effects and outliers. A lag plot can be used to verify the residuals are independent. The outliers also appear in the lag plot, and a histogram and normal probability plot to check for skewness or other non-normality in the residuals.

Extensions
A different method consists in transforming the non-linear regression to a linear regression thanks to a convenient integral equation. Then, there is no need for initial guess and no need for iterative process : the fitting is directly obtained.

See also
Pitch detection algorithm

References

External links
Beam deflection case study

Regression with time series structure
Regression models
Pazmany PL-1. The Pazmany PL-1 Laminar and Pazmany PL-2 are American two-seat trainer and personal light aircraft designed by Ladislao Pazmany to be marketed as a homebuilt aircraft by his company Pazmany Aircraft Corporation. The aircraft was built under license in Taiwan (Republic of China) as the AIDC PL-1B Cheinshou. It was later followed by an improved version the PL-2. The SLAF Aircraft Engineering Wing developed a modified variant of the PL-2 in 1977, which was never used operationally.

Development
The PL-1 Laminar was the first design by Ladislao Pazmany, it was intended to be marketed for the homebuilt market. The prototype first flew on the 23 March 1962. The PL-1 is a cantilever low-wing monoplane with a fixed tricycle landing gear. It has side-by-side seating for a crew of two and is powered by a 95 hp (71 kW) Continental C-90 piston engine. The Aerospace Industrial Development Corporation (AIDC) acquired plans and built a PL-1 for evaluation with a first flight on 26 October 1968. AIDC then built 58 aircraft designated the PL-1B for the Republic of China Air Force and fitted with a 150 hp (112 kW) Avco Lycoming O-320 engine.

Soon after the first flight Pazmany produced an improved design, the PL-2 which had a slight increase in cockpit width and changes to the structure to make it easier for homebuilders. The PL-2 was evaluated by a number of air forces in South East Asia. It was built under license in Indonesia as the LIPNUR LT-200.

Variants

PL-1
Original design for home-built light aircraft
PL-1B
License-built variant by AIDC with a 150hp (112kW) Avco Lycoming O-320 engine, 58 built. Known as the PL-1B Chieh Shou.
PL-2
More rounded, wider cockpit, increased wing dihedral.
PL-2A
Improved model, all metal, two seats
LT-200
License-built variant by LIPNUR in Indonesia, 4 were built.

Operators

Indonesian Air Force - LT-200 (Licensed-built PL-2)

Republic of Vietnam Air Force - One aircraft, no longer in service. Named Tien Phong "Pioneer" and built under U.S supervision. Plans for additional aircraft were cancelled in 1972

 Republic of China Air Force - PL-1, PL-1A, PL-1B
 Republic of China Army - PL-1B

Former Operators

Sri Lanka Air Force - Sri Lankan built PL-2 variants were in operation until the early 1980s.

Thai Air Force - Two PL-2 were assembled in 1974 by Thai Air Force. Possibly they were evaluated for production, but no further aircraft were built. One of them is now on display at the RTAF Museum.

Specifications (LT-200)

References

 The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 2694

1960s United States civil utility aircraft
PL-01
AIDC aircraft
1960s United States military trainer aircraft
Single-engined tractor aircraft
Low-wing aircraft
Aircraft first flown in 1962
Single-engined piston aircraft
Aircraft with fixed tricycle landing gear
Turing Talk. The Turing Talk, previously known as the Turing Lecture, is an annual award lecture delivered by a noted speaker on the subject of Computer Science. Sponsored and co-hosted by the Institution of Engineering and Technology (IET) and the British Computer Society, the talk has been delivered at different locations in the United Kingdom annually since 1999. Venues for the talk have included Savoy Place, the Royal Institution in  London, Cardiff University, The University of Manchester, Belfast City Hall and the University of Glasgow. The main talk is preluded with an insightful speaker, who performs an opening act for the main event.

The talk is named in honour of Alan Turing and should not be confused with the Turing Award lecture organised by the Association for Computing Machinery (ACM). Recent Turing talks are available as a live webcast and archived online.

Turing Talks
Previous speakers have included:
 2022: Julie McCann, a day in the life of a smart city
 2021: Cecilia Mascolo, Sounding out wearable and audio data for health diagnostics
 2020: Mark Girolami, Digital Twins: The Next Phase of the AI Revolution
 2019:  Engineering a fair future: Why we need to train unbiased AI
 2018: Andy Harter, Innovation and technology – art or science?
 2017: Guruduth Banavar, Beneficial AI for the Advancement of Humankind
 2016: Robert Schukai, The Internet of Me: It's all about my screens
 2015: Robert Pepper, The Internet Paradox: How bottom-up beat(s) command and control
 2014: Bernard S. Meyerson, Beyond silicon: Cognition and much, much more
 2013: Suranga Chandratillake, What they didn't teach me: building a technology company and taking it to market
 2012: Ray Dolan, From cryptoanalysis to cognitive neuroscience – a hidden legacy of Alan Turing
 2011: Donald Knuth, An Evening with Donald Knuth – All Questions Answered
 2010: Christopher Bishop. Embracing Uncertainty: the new machine intelligence
 2009: Mike Brady, Information Engineering and its Future
 2008: James Martin, Target Earth and the meaning of the 21st century
 2007: Grady Booch, The Promise, the Limits and the Beauty of Software
 2006: Chris Mairs, Lifestyle access for the disabled 
 2005: Fred Brooks, Collaboration and Telecollaboration in Design
 2004: Fred Piper, Cyberspace Security, The Good, The Bad & The Ugly
 2003: Caroline Kovac, Computing in the Age of the Genome
 2002: Mark Welland, Smaller, faster, better – but is it nanotechnology?
 2001: Nick Donofrio, Technology, Innovation and the New Economy
 2000: Brian Randell, Facing up to Faults
 1999: Samson Abramsky From Computation to Interaction – Towards a Science of Information

See also 
 Pinkerton Lecture

References

1998 establishments in the United Kingdom
Recurring events established in 1998
British lecture series
Computer science education
Academic awards
British Computer Society
Institution of Engineering and Technology
Alan Turing
Druine Turbulent. The Druine D.31 Turbulent is a French single-seat ultralight Homebuilt aircraft  designed by Roger Druine.

Development
The D.31 Turbulent was designed to be amateur-built and is a single-seat ultra-light aircraft with cantilever low-wing and fixed tailwheel landing gear. Designed to be powered by a 30hp (1200cc) Volkswagen or similar engine. The fuselage and wings use wood construction with fabric covering.

Rollason Aircraft & Engines Limited produced 26 factory-built D.31 aircraft in the United Kingdom and three D.31A models with strengthened wing spar in order to get a full British certificate of Airworthiness.  Five Turbulents are operated by the Tiger Club in 2019.

The rights to plans for the design are held by the UK Light Aircraft Association.

Operational history
The Tiger Club Turbulent displays have been a highlight of the UK air display scene since 1959 and, by remaining in sight of the crowd at all times, their displays are often regarded as the most rivetting. Reviewers Roy Beisswenger and Marino Boric described the design in a 2015 review, saying, "the controls are wonderfully light, and although not aerobatic, the aircraft has been used by the Tiger Club Display Team for formation flying displays in the UK, since 1959. On 31 August 2019 the Tiger club celebrated 60 years of operating the Turbulent.

In 1960, Rollason Turbulent G-APNZ was flown by Prince Philip, Duke of Edinburgh, making the Turbulent the first and only single-seat aircraft to have been flown by a member of the royal family. In the same year, the same aircraft won the King's Cup air race, flown by John Severne. G-APNZ is subject to a restoration at Derby Airfield.

Variants
D.3
Original design and prototypes
D.30 powered by  Ava 4A-00
D.31
Standard home-built and factory built variant. Initially built by Rollason Aircraft & Engines with 1200cc VW engine but standardized on the 1600cc Ardem 4CO2 modified VW engine. The Tiger Club have modified their aircraft to use Leburg Electronic Ignition. 
D.31A
Factory & homebuilt aircraft incorporating factory designed (by Rollason Aircraft & Engines) strengthened main spar to allow C of A certification. Top speed = 115 Knots. Max weight = 317 kg
D.32 powered by  Sarolea Epervier
D.35 powered by  Porsche
D.36 powered by JAP J-99, G-APOL but later re-engined to D.31 standard

Specifications D.31

See also

References

Notes

Bibliography

 A.J.Jackson, British Civil Aircraft 1919–1972 Volume 2, 2nd Edition (reprint) 1988 (for homebuilt Druine Turbulents), Putnam & Company, London, 1974, 
 A.J.Jackson, British Civil Aircraft 1919–1972 Volume 3, 2nd Edition (reprint) 1988 (for Rollason Turbulents), Putnam & Company, London, 1974, 
 L.Benjamin, Tiger Club – A Tribute, Volume 1, 1957–1966, Cirrus Associates, 1988,

External links
Plans from LAA.<ref>
Official website

1950s French sport aircraft
Turbulent
Homebuilt aircraft
Single-engined tractor aircraft
Low-wing aircraft
Aircraft first flown in 1951
JUGENE. JUGENE (Jülich Blue Gene) was a supercomputer built by IBM for Forschungszentrum Jülich in Germany. It was based on the Blue Gene/P and succeeded the JUBL based on an earlier design. It was at the introduction the second fastest computer in the world, and the month before its decommissioning in July 2012 it was still at the 25th position in the TOP500 list. The computer was owned by the "Jülich Supercomputing Centre" (JSC) and the Gauss Centre for Supercomputing.

With 65,536 PowerPC 450 cores, clocked at 850 MHz and housed in 16 cabinets the computer reaches a peak processing power of 222.8 TFLOPS (Rpeak). With an official Linpack rating of 167.3 TFLOPS (Rmax) JUGENE took second place overall and is the fastest civil/commercially used computer in the TOP500 list of November 2007.

The computer was financed by Forschungszentrum Jülich, the State of North Rhine-Westphalia, the Federal Ministry for Research and Education as well as the Helmholtz Association of German Research Centres. The head of the JSC, Thomas Lippert, said that "The unique thing about our JUGENE is its extremely low power consumption compared to other systems even at maximum computing power".  A Blue Gene/P-System should reach about 0.35 GFLOPS/Watt and is therefore an order of magnitude more effective than a common x86 based supercomputer for a similar task.

In February 2009 it was announced that JUGENE would be upgraded to reach petaflops performance in June 2009, making it the first petascale supercomputer in Europe.

On May 26, 2009, the newly configured JUGENE was unveiled. It includes 294,912 processor cores, 144 terabyte memory, 6 petabyte storage in 72 racks. With a peak performance of about one PetaFLOPS, it was at the time the third fastest supercomputer in the world, ranking behind IBM Roadrunner and Jaguar. The new configuration also incorporates a new water cooling system that will reduce the cooling cost substantially.

The two front nodes of JUGENE are operated with SUSE Linux Enterprise Server 10.

JUGENE was decommissioned on 31 July 2012 and replaced by the Blue Gene/Q system JUQUEEN.

References

IBM supercomputers
Parallel computing
Petascale computers
Supercomputing in Europe
Jülich Research Centre
Donnet-Denhaut flying boat. The Donnet-Denhaut flying boat was a maritime patrol and anti-submarine warfare aircraft produced in France during the First World War. Known at the time simply as "Donnet-Denhaut" or "DD" flying boats, the DD-2, DD-8, DD-9, and DD-10 designations were applied retrospectively to denote the various changes in configuration made during their service life.

Design and development
Developed in response to a French Navy requirement, these were biplane flying boats of conventional configuration with two-bay unstaggered wings, and a Salmson R9 160 hp radial engine, mounted pusher-fashion on struts in the interplane gap. The French Navy ordered some 90 aircraft in this original configuration (later dubbed DD-2), and in 1917, requested Donnet-Denhaut to redesign the aircraft to take advantage of the new Hispano-Suiza 8 engine. So equipped, the Navy ordered another 365 machines. In order to take full advantage of the more powerful engine, Donnet-Denhaut increased the wingspan by adding a third bay to the wing cellule and used the extra lift to incorporate a place for a second gunner, bringing the total crew to three. This version (later, the DD-8) became the most produced, with perhaps 500 aircraft built. The DD-8 was also known as the Donnet-Denhaut 300-hp.

Further developments added a second machine gun to each gunner's station (the DD-9) and twin engines mounted in a push-pull configuration (the DD-10). Following the war, a few military surplus DDs were remanufactured as the Donnet HB.3 and operated commercially for a time.

Operational history
Apart from French Navy service, DD flying boats were operated by the United States Navy in Europe, flying from Île-Tudy and Dunkirk to protect convoys from submarines. Some 50 aircraft of this type were purchased, and the first attack (against U-108; unsuccessful) took place on 23 April 1918.

Operators

French Navy

Portuguese Naval Aviation

United States Navy

Specifications (DD-8)

See also

Notes

References

 
 
 
 
 

1910s French patrol aircraft
Flying boats
Biplanes
Single-engined pusher aircraft
Donnet aircraft
Aircraft first flown in 1915
Fugacity capacity. The fugacity capacity constant (Z) is used to help describe the concentration of a chemical in a system (usually in mol/m3Pa). Hemond and Hechner-Levy (2000) describe how to utilize the fugacity capacity to calculate the concentration of a chemical in a system. Depending on the chemical, fugacity capacity varies. The concentration in media 'm' equals the fugacity capacity in media 'm' multiplied by the fugacity of the chemical.
For a chemical system at equilibrium, the fugacity of the chemical will be the same in each media/phase/compartment. Therefore equilibrium is sometimes called "equifugacity" in the context of these calculations.

where Z is a proportional constant, termed fugacity capacity. This equation does not necessarily imply that C and f are always linearly related. Non-linearity can be accommodated by allowing Z to vary as a function of C or f.

For a better understanding of the fugacity capacity concept, heat capacity may provide a precedent for introducing Z as a capacity of a phase to absorb particular quantity of chemical. However, phases with high fugacity capacity do not necessarily retain high fugacity.  

In calculations of fugacity capacity key factors would be (a) the nature of the solute (chemical), (b) the nature of the medium or compartment, (c) temperature.

Expressions for fugacity capacity
The expression for Zm is dependent on the media/phase/compartment. The following list gives the fugacity capacities for common medias:
 Air (under ideal gas assumptions): Zair = 1/RT
 Water: Zwater = 1/H
 Octanol: Zoct = Kow/H
 Pure phase of target chemical: Zpure = 1/Psv

Where: R is the Ideal gas constant (8.314 Pa·m3/mol·K); T is the absolute temperature (K); H is the Henry's law constant for the target chemical (Pa/m3mol); Kow is the octanol-water partition coefficient for the target chemical (dimensionless ratio); Ps is the vapor pressure of the target chemical (Pa); and v is the molar volume of the target chemical (m3/mol). 

Notice that the ratio between Z-values for different media (e.g. octanol and water) is the same as the ratio between the concentrations of the target chemical in each media at equilibrium. 

When using a fugacity capacity approach to calculate the concentrations of a chemical in each of several medias/phases/compartments, it is often convenient to calculate the prevailing fugacity of the system using the following equation if the total mass of target chemical (MT) and the volume of each compartment (Vm) are known:

Alternatively, if the target chemical is present as a pure phase at equilibrium, its vapor pressure will be the prevailing fugacity of the system.

See also
 Multimedia fugacity model

References

Chemical thermodynamics
Environmental chemistry
Equilibrium chemistry
Celestino Rosatelli. Celestino Rosatelli (8 April 1885 – 23 September 1945) was an Italian aeronautics engineer.

Celestino Rosatelli was born in Belmonte in Sabina, close to Rieti, to Bernardino Rosatelli and Apollonia Santini. His parents noticed his brilliant mathematical skills and were able to support his studies. Sent to Rome to study engineering, he graduated in 1910. Afterwards, he designed aircraft in Turin for Fiat.

Rosatelli designed some of the most advanced aircraft of his time, such as the Fiat CR.42 and Fiat BR.20.

He died in Turin in 1945.

References 

1885 births
1945 deaths
People from the Province of Rieti
Italian aerospace engineers
Damien Sandras. Damien Sandras is known in the free software community due to his work on GNOME, more specifically on Ekiga, the leading open-source softphone for the Linux desktop.  He is one of the founders of FOSDEM, an event dedicated to free software developers in Europe.

FOSDEM was initially created by Raphaël Bauduin under the name OSDEM. Sandras joined Bauduin and helped him setting up the event. Sandras was one of the driving forces behind the organization during 7 years.

Ekiga was supported by the Free Software Foundation and more specifically by Richard Stallman as an alternative to the proprietary Skype. Stallman's e-mail signature contained a mention to the softphone during a few years:

Sandras is a graduate of the University of Louvain (UCLouvain). He is mentioned on the university portal in the University Success Stories.

He is now leading Be IP, a startup dealing with enterprise open-source VoIP software.

Sources
 http://www.journaldunet.com/solutions/itws/050317_it_gnomemeeting.shtml
 http://www.linuxdevcenter.com/pub/a/linux/2005/03/17/gnomemeeting.html
 http://www.linuxtoday.com/news_story.php3?ltsn=2002-01-11-005-20-IN-GN 
 https://web.archive.org/web/20070629120232/http://ghj.sunsite.dk/index.php?1=articles%2F1%2Finterview_gnomemeeting.html&article=1

References

External links
 Home page 
 Ekiga.org
 Be IP

Belgian computer programmers
GNOME developers
Free software programmers
Living people
Year of birth missing (living people)