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Biography
Lloyd J. Dumas
Lloyd Jeff Dumas (born May 18, 1945) is a Professor of Political Economy, Economics, and Public Policy in the School of Economic, Political and Policy Sciences at the University of Texas at Dallas. He is an expert in many areas, including but not limited to, the economics of peace, economic conversion, the macroeconomics of military spending, climate change and economic solutions, human reliabi
  • 917
  • 09 Dec 2022
Topic Review
USS Cairo
USS Cairo /ˈkeɪroʊ/ was one of the first American ironclad warships built at the beginning of the U.S. Civil War. Cairo was the lead ship of the City-class gunboats and named for Cairo, Illinois. In June 1862, she captured the Confederate garrison of Fort Pillow on the Mississippi, enabling Union forces to occupy Memphis. As part of the Yazoo Pass Expedition, she was sunk on 12 December 1862, while clearing mines for the attack on Haines Bluff. Cairo was the first ship ever to be sunk by a mine remotely detonated by hand. The remains of Cairo can be viewed at Vicksburg National Military Park with a museum of its weapons and naval stores.
  • 917
  • 08 Nov 2022
Topic Review
Improving Biomass Quality in Miscanthus
Lignocellulosic crops are attractive bioresources for energy and chemicals production within a sustainable, carbon circular society. Miscanthus is one of the perennial grasses that exhibits great potential as a dedicated feedstock for conversion to biobased products in integrated biorefineries. The current biorefinery strategies are primarily focused on polysaccharide valorization and require severe pretreatments to overcome the lignin barrier. The need for such pretreatments represents an economic burden and impacts the overall sustainability of the biorefinery. Hence, increasing its efficiency has been a topic of great interest. Inversely, though pretreatment will remain an essential step, there is room to reduce its severity by optimizing the biomass composition rendering it more exploitable. Extensive studies have examined the miscanthus cell wall structures in great detail, and pinpointed those components that affect biomass digestibility under various pretreatments. Although lignin content has been identified as the most important factor limiting cell wall deconstruction, the effect of polysaccharides and interaction between the different constituents play an important role as well. The natural variation that is available within different miscanthus species and increased understanding of biosynthetic cell wall pathways have specified the potential to create novel accessions with improved digestibility through breeding or genetic modification.
  • 916
  • 24 Feb 2021
Biography
Bryant Hammett
Bryant O'Dare Hammett, Jr. (born September 30, 1956), is a civil engineer and land surveyor from Ferriday in Concordia Parish in eastern Louisiana, who served as a Democratic member of the Louisiana House of Representatives from 1992–2006.[1] Hammett graduated in 1974 from the private Huntington High School in Ferriday. He subsequently earned a Bachelor of Science degree from Louisiana Tech
  • 916
  • 26 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.
  • 913
  • 23 Nov 2022
Topic Review
Public Participation Geographic Information System
A public participation geographic information system (PPGIS) is meant to bring the academic practices of GIS and mapping to the local level in order to promote knowledge production by local and non-governmental groups. The idea behind PPGIS is empowerment and inclusion of marginalized populations, who have little voice in the public arena, through geographic technology education and participation. PPGIS uses and produces digital maps, satellite imagery, sketch maps, and many other spatial and visual tools, to change geographic involvement and awareness on a local level. The term was coined in 1996 at the meetings of the National Center for Geographic Information and Analysis (NCGIA).
  • 912
  • 11 Oct 2022
Topic Review
The Cold Spray Method
The cold, thermal spraying technology “Cold Spray” is a method of processing particles in a solid state. Research conducted through cold spray technology has seen a significant improvement in material properties; when processing the particles in a solid state, they adhere to the surface instead of eroding it. Cold spraying has proven to be an effective technique for improving material properties, as confirmed by its integration into different fields and industries, becoming competitive by being the only method for depositing particles below their melting point.
  • 911
  • 15 Feb 2023
Topic Review
Tool and Die Maker
Tool and die makers are a class of machinists in the manufacturing industries who make jigs, fixtures, dies, molds, machine tools, cutting tools, gauges, and other tools used in manufacturing processes. Depending on which area of concentration a particular person works in, he or she may be called by variations on the name, including tool maker (toolmaker), die maker (diemaker), mold maker (moldmaker) or tool jig and die-maker, etc. Tool and die makers work primarily in toolroom environments—sometimes literally in one room but more often in an environment with flexible, semipermeable boundaries from production work. They are skilled artisans (craftspeople) who typically learn their trade through a combination of academic coursework and hands-on instruction, with a substantial period of on-the-job training that is functionally an apprenticeship (although usually not nominally today). Art and science (specifically, applied science) are thoroughly intermixed in their work, as they also are in engineering. Manufacturing engineers and tool and die makers often work in close consultation as part of a manufacturing engineering team. There is often turnover between the careers, as one person may end up working in both at different times of their life, depending on the turns of their particular educational and career path. There was no codified difference between them during the 19th century and earlier parts of the 20th century; it was only after World War II that engineering became a regulated profession exclusively defined by a university or college engineering degree.Both careers require some level of talent in both artistic/artisanal/creative areas and math-and-science areas.
  • 910
  • 21 Oct 2022
Biography
George W. Fuller
George Warren Fuller (December 21, 1868 – June 15, 1934) was a sanitary engineer who was also trained in bacteriology and chemistry. His career extended from 1890 to 1934 and he was responsible for important innovations in water and wastewater treatment. He designed and built the first modern water filtration plant, and he designed and built the first chlorination system that disinfected a U.S
  • 905
  • 02 Dec 2022
Biography
Jack Boyd Buckley
Jack Boyd Buckley (February 6, 1926 – October 9, 2007 in Fort Wayne, Indiana) was a civil engineer and building consultant based in Houston, Texas. He played a major role in the construction of numerous high-rise buildings and amusement parks throughout the world, including Pennzoil Place and Greenway Plaza in Houston, and was involved in the design of the air conditioning system of the Astrod
  • 905
  • 12 Dec 2022
Biography
James S. Voss
James Shelton Voss (born March 3, 1949) is a retired United States Army Colonel and NASA astronaut. During his time with NASA, Voss flew in space five times on board the Space Shuttle and International Space Station. He also served as deputy of Flight Operations for the Space Station Program Mission Integration and Operations Office. While participating in ISS Expedition 2, he and Susan Helms co
  • 903
  • 24 Nov 2022
Topic Review
List of Gliders (F)
This is a list of gliders/sailplanes of the world, (this reference lists all gliders with references, where available) Note: Any aircraft can glide for a short time, but gliders are designed to glide for longer.
  • 901
  • 19 Oct 2022
Biography
Alexander Weygers
Alexander George (Alex) Weygers, (October 12, 1901–July 23, 1989), was a polymath Dutch-American artist who is best known as a sculptor, painter, print maker, blacksmith, carpenter, philosopher, Aerospace engineer and author. Weygers was born in Mojokerto, Dutch East Indies, where his Dutch parents, Albert Weijgers en Johanna van Leenhoff, owned and operated a sugar plantation and a hotel.
  • 900
  • 28 Nov 2022
Topic Review
Design Components for Electrospun Vascular Prosthesis
The design parameters for electrospun vascular grafts can be divided into two categories: the constructional parameters, which involve fiber diameter, pore size, porosity, fiber orientation, wall thickness, the number of layers, and material selection. The scaffold’s configuration and material choice are both essential because they have a significant impact on mechanical and biological characteristics, including compliance, tensile strength, burst pressure, blood permeability, and suturability, as well as biological processes such as cell phenotype, extracellular matrix (ECM) formation, and cell diffusion.
  • 896
  • 26 Oct 2022
Topic Review
Sound Masking
Masking Sound is the addition of generated sound (commonly, though inaccurately, referred to as "white noise" or "pink noise") into an environment to mask unwanted sound. It relies on auditory masking. Masking sound is not an active noise control (noise cancellation technique). Masking sound reduces or eliminates perception of sound. The technology is promoted as a widespread application to an entire area to improve the acoustical satisfaction, by improving the acoustical privacy of the space. This improves one's ability to focus and their productivity. Masking sound is analogous to light. - Sound Power and Luminosity - Sound Intensity and Light intensity - They both have spectral characteristics.
  • 893
  • 24 Oct 2022
Biography
Eugene S. Ferguson
Eugene Shallcross Ferguson (1916 – 21 March 2004) was an American engineer, historian of technology and professor of history at the University of Delaware, particularly known for his 1992 work Engineering and the Mind's Eye. Ferguson was born in Wilmington, Delaware, and raised in Ridley Park, Pennsylvania. He obtained his BS in mechanical engineering at the Carnegie Institute of Technology
  • 893
  • 09 Dec 2022
Biography
Fairman Rogers
Fairman Rogers (November 15, 1833 – August 22, 1900) was an United States civil engineer, educator, and philanthropist, born in Philadelphia, Pennsylvania. He graduated from the University of Pennsylvania in 1853, and taught civil engineering there from 1855 to 1871.[1] He was one of four professors who founded its Department of Mines, Arts and Manufacturers (1855), and he served as a Univers
  • 888
  • 15 Dec 2022
Biography
George Rankine Irwin
Dr. George Rankin Irwin ForMemRS[1] (February 26, 1907 – October 9, 1998) was an United States scientist in the field of fracture mechanics and strength of materials. He was internationally known for his study of fracture of materials. George R. Irwin was born in El Paso, Texas. His family moved to Springfield, Illinois where he went to school. He attended Knox College in Galesburg, Illino
  • 888
  • 08 Dec 2022
Topic Review
Juice Jacking: Security Issues and USB Technology
For a reliable and convenient system, it is essential to build a secure system that will be protected from outer attacks and also serve the purpose of keeping the inner data safe from intruders. A juice jacking is a popular and spreading cyber-attack that allows intruders to get inside the system through the web and theive potential data from the system. For peripheral communications, Universal Serial Bus (USB) is the most commonly used standard in 5G generation computer systems. USB is not only used for communication, but also to charge gadgets. However, the transferal of data between devices using USB is prone to various security threats. It is necessary to maintain the confidentiality and sensitivity of data on the bus line to maintain integrity. 
  • 884
  • 28 Feb 2022
Topic Review
Double-Barreled Shotgun
A double-barreled shotgun is a break-action shotgun with two parallel barrels, allowing two single shots to be fired in quick succession.
  • 884
  • 06 Dec 2022
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