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Biography
Rolf Heinrich Sabersky
Rolf Heinrich Sabersky (October 20, 1920 – October 24, 2016) was professor emeritus in mechanical engineering at Caltech. He worked with luminaries throughout his career including Apollo M. O. Smith and Theodore von Kármán at Aerojet. James Van Allan sought his expertise for the development of the Ajax and Bumblebee rocket programs. Rolf Heinrich Sabersky was born in Berlin, Germany. His
  • 414
  • 27 Dec 2022
Biography
Sébastienne Guyot
Sébastienne Guyot (26 April 1896 – 21 August 1941) was a French engineer who specialized in aerodynamic flying. She was born in Pont l'Abbé in the Finistère. A teacher, Guyot resigned in 1917 to prepare for the competition of the Ecole Centrale of the Paris Lycée Jules-Ferry when she learned that the school would accept girls into its ranks. She graduated in 1921 from the first class of C
  • 413
  • 14 Nov 2022
Topic Review
CO2 Radiation Relation with Planetary
The entry emphasizes on VUV and IR radiation, since recent experimental efforts has been devoted to these wavelength ranges since they contribute mostly to CO2 plasma radiation. The main objective of the study is to identify the most attractive datasets for future crosscheck comparisons with the results obtained during future test campaigns with ESTHER shock-tube. 
  • 410
  • 11 May 2021
Biography
Elzy Burroughs
Elzy Burroughs (1771/77–1825) was an American stonemason, engineer, lighthouse builder and keeper. Elzy Burroughs was born and raised in Stafford County, Virginia. Elzy Burroughs' family leased and operated a sandstone quarry in the Aquia Creek area of Stafford County. Known as Aquia sandstone, material from quarries in this area was utilized in the construction of Mount Vernon, the United St
  • 409
  • 13 Dec 2022
Biography
Ralph D. Mershon
Ralph Davenport Mershon was an electrical engineer and inventor. His company Mershon Condensers was a successful manufacturer of electrolytic capacitors for the expanding radio market of the 1920s. He is known for the Mershon Auditorium (1957) and the Mershon Center at his alma mater Ohio State University that his estate made possible. In 1956 a biography and summary of his work was published by
  • 408
  • 09 Dec 2022
Topic Review
Natural-Colored Photonic Structures with Cellulose-Based Materials
Structural coloration has become a fascinating field of research, inspiring scientists and engineers to explore the vibrant colors observed in nature and develop bio-inspired photonic structures for various applications. Cellulose-based materials derived from plant fibers offer a promising platform for mimicking natural photonic structures. Their abundance, renewability, and versatility in form and structure make them ideal for engineering specific optical properties.
  • 408
  • 06 Jul 2023
Biography
Ray Butts
Joseph Raymond "Ray" Butts (September 22, 1919 – April 20, 2003) was an American inventor and engineer best known for designing several devices that influenced the evolution of electrified music, in particular those used with the electric guitar. Most notably, Butts is the inventor of the EchoSonic, a guitar amplifier with a built-in tape echo, and the FilterTron, the first humbucker guitar pi
  • 405
  • 02 Dec 2022
Topic Review
Missing Middle Housing
Missing Middle Housing consists of multi-unit housing types such as duplexes, fourplexes, bungalow courts, and mansion apartments that are not bigger than a large house, that are integrated throughout most walkable pre-1940s neighborhoods, often integrated into blocks with primarily single-family homes, and that provide diverse housing choices and generate enough density to support transit and locally-serving commercial amenities. Although many of these are a common feature in pre-war building stocks, these housing types have become much less common.
  • 403
  • 01 Dec 2022
Topic Review
Douglas–Grumman Scandal
The Douglas-Grumman Scandal was a bribery scandal that rocked Japan in February 1979, concerning the sale of American fighter jets.
  • 401
  • 15 Nov 2022
Topic Review
Last Mile
The last mile or last kilometer is a phrase widely used in the telecommunications, cable television and internet industries to refer to the final leg of the telecommunications networks that deliver telecommunication services to retail end-users (customers). More specifically, the last mile describes the portion of the telecommunications network chain that physically reaches the end-user's premises. Examples are the copper wire subscriber lines connecting landline telephones to the local telephone exchange; coaxial cable service drops carrying cable television signals from utility poles to subscribers' homes, and cell towers linking local cell phones to the cellular network. The word "mile" is used metaphorically; the length of the last mile link may be more or less than a mile. Because the last mile of a network to the user is conversely the first mile from the user's premises to the outside world when the user is sending data, the term first mile is also alternatively used. The last mile is typically the speed bottleneck in communication networks; its bandwidth effectively limits the amount of data that can be delivered to the customer. This is because retail telecommunication networks have the topology of "trees", with relatively few high capacity "trunk" communication channels branching out to feed many final mile "twigs". The final mile links, being the most numerous and thus the most expensive part of the system, as well as having to interface with a wide variety of user equipment, are the most difficult to upgrade to new technology. For example, telephone trunklines that carry phone calls between switching centers are made of modern optical fiber, but the last mile is typically twisted pair wires, a technology which has essentially remained unchanged for over a century since the original laying of copper phone cables. To resolve, or at least mitigate, the problems involved with attempting to provide enhanced services over the last mile, some firms have been mixing networks for decades. One example is fixed wireless access, where a wireless network is used instead of wires to connect a stationary terminal to the wireline network. Various solutions are being developed which are seen as an alternative to the last mile of standard incumbent local exchange carriers. These include WiMAX and broadband over power lines. In recent years, usage of the term "last mile" has expanded outside the communications industries, to include other distribution networks that deliver goods to customers, such as the pipes that deliver water and natural gas to customer premises, and the final legs of mail and package delivery services. The term has also been used to describe education and training providers that more tightly link individuals with job opportunities.
  • 401
  • 15 Nov 2022
Biography
Richard Mastracchio
Richard Alan "Rick" Mastracchio (born February 11, 1960) is an American engineer and former NASA astronaut. He has flown on three NASA Space Shuttle missions as a mission specialist in addition to serving as a Flight Engineer on the Soyuz TMA-11M (Expedition 38/Expedition 39) long duration mission aboard the International Space Station. He is currently the Senior Director of Operations for Comme
  • 401
  • 25 Nov 2022
Biography
Monika Schultz
Monika Karin Schultz (born August 15, 1967 in Pasadena, Texas) is an American engineer. She currently works as a manager in coaching and development at Intertek in the Houston, Texas area.[1] She formerly worked for the United Space Alliance, a NASA contractor. She considers Nassau Bay, Texas her hometown.[2] In April 2005, Schultz served as an aquanaut on the NASA Extreme Environment Mission Op
  • 401
  • 09 Dec 2022
Biography
Alvin E. Dodd
Alvin Earl Dodd (March 11, 1883 - June 2, 1951) was an American consulting engineer and president of the American Management Association, known as industry expert and recipient of the Henry Laurence Gantt Medal in 1944[1] Dodd was born in Grand Detour, Illinois as son of Alvin Harvey Dodd and Edith (Merrill) Dodd. After regular education, he studied engineering at the Armour Institute of Te
  • 400
  • 16 Dec 2022
Topic Review
Secure Cryptoprocessor
A secure cryptoprocessor is a dedicated computer-on-a-chip or microprocessor for carrying out cryptographic operations, embedded in a packaging with multiple physical security measures, which give it a degree of tamper resistance. Unlike cryptographic processors that output decrypted data onto a bus in a secure environment, a secure cryptoprocessor does not output decrypted data or decrypted program instructions in an environment where security cannot always be maintained. The purpose of a secure cryptoprocessor is to act as the keystone of a security subsystem, eliminating the need to protect the rest of the subsystem with physical security measures.
  • 398
  • 19 Oct 2022
Topic Review
Akai AX60
The AX60 is a polyphonic analogue keyboard synthesizer manufactured by Akai Professional in the mid-1980s. It was Akai's answer to the popular Roland Juno series synthesizers. The AX60 uses voltage-controlled analogue oscillators and filter circuitry based on the Curtis Electronics CEM 3394 integrated circuit.
  • 394
  • 18 Nov 2022
Topic Review
Smart Lighting
Smart lighting is a lighting technology designed for energy efficiency, convenience and security. This may include high efficiency fixtures and automated controls that make adjustments based on conditions such as occupancy or daylight availability. Lighting is the deliberate application of light to achieve some aesthetic or practical effect (e.g. illumination of a security breach). It includes task lighting, accent lighting, and general lighting.
  • 394
  • 01 Dec 2022
Biography
Malcolm Hebert
Malcolm Paul Hébert Sr. (October 25, 1926 – September 23, 2006), was a mechanical engineer who served from 1973 to 1977 as the last commissioner of streets and parks[1] in Alexandria, Louisiana, a citywide elected position which was abolished with a change in the city charter. Hébert was born in Monroe in Ouachita Parish in northeastern Louisiana, one of three children of Maxime Paul Héb
  • 394
  • 29 Dec 2022
Topic Review
Internet Kill Switch
An Internet kill switch is a countermeasure concept of activating a single shut off mechanism for all Internet traffic. The concept behind having a kill switch is based on creating a single point of control (i.e. a switch) for a single authority to control or shut down the Internet in order to protect it or its users. In the United States, groups such as the American Civil Liberties Union have criticized proposals for implementing the idea so far.
  • 393
  • 23 Nov 2022
Topic Review
Application for Food Plan Management Alzheimer Patients
Alzheimer’s disease is a type of dementia that affects many individuals, mainly in an older age group. Over time, it leads to other diseases that affect their autonomy and independence. The quality of food ingestion is a way to mitigate the disease and preserve the patient’s well-being, which substantially impacts their health.
  • 393
  • 15 May 2023
Biography
Lou Zaeske
Louis W. "Lou" Zaeske, Jr. (December 17, 1941 – August 30, 2011) was a mechanical engineer and a political activist from Bryan, Texas . In 1988, he founded the interest group, the American Ethnic Coalition, which lobbied for English as the official language of the United States. Zaeske was born at Randolph Air Force Base , then Randolph Field, in San Antonio, the son of Louis Zaeske, Sr. (1
  • 391
  • 26 Dec 2022
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