Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Most Viewed Latest Alphabetical (A-Z) Alphabetical (Z-A)
Filter:
All Topic Review Biography Peer Reviewed Entry Video Entry
Topic Review
USFS Grampus
USFC Grampus was a fisheries research ship in commission in the fleet of the United States Commission of Fish and Fisheries, usually called the United States Fish Commission, from 1886 to 1903 and then as USFS Grampus in the fleet of its successor, the United States Bureau of Fisheries, until 1917. She was a schooner of revolutionary design in terms of speed and safety and influenced the construction of later commercial fishing schooners. Grampus′s home ports were Woods Hole and Gloucester, Massachusetts . During her 31-year career, Grampus made significant contributions to the understanding of the mackerel fishery off the United States East Coast , Canada , and the British colony of Newfoundland. She also investigated the tilefish population, conducted fishery investigations in the Gulf of Mexico, and contributed to fish culture work in New England to propagate the mackerel, cod, and lobster.
  • 339
  • 01 Dec 2022
Topic Review
Heatable Glass
Electrically heatable glass and windows are relatively new products, which help solve problems in the design of buildings and vehicles. The idea of heating glass is based on the use of energy-efficient low-emissive glass, which is generally simple silicate glass with a special metallic oxides coating. Low-emissive coating decreases heat loss by approximately 30%. Heatable glass can be used in all kinds of standard glazing systems, whether wood, plastic, aluminum or steel. Heatable glass based on low-emissive coatings was first produced in high volume in the early 1980s. Today, heating glass is used in the construction of many kinds of buildings and in mass production of vehicles, ships and trains. Heatable glass removes discomfort and other disadvantages induced by the low heat-insulating features of silicate glass. The effect of “cold glass” disappears when the surface of the glass is heated. Condensation is eliminated, along with ice and snow covering, the window’s heat losses are compensated and room comfort is improved. Heatable glass can be used as the principal system of heating and can be combined with floor and ceiling heating. Such combination helps reduce the total rate of heat loss of the building, thereby lowering heating expenses. Also, the active area of the room can be used more efficiently, as massive window-sill radiators are not needed. Initially, heating glass was produced by sputtering ordinary glass, and stable quality could not be guaranteed. A technological breakthrough took place in 1989 when the mass production of low-emissive glass began. The glass was coated during the manufacturing process.
  • 338
  • 18 Oct 2022
Biography
Jehiel R. Elyachar
Jehiel Raphael Elyachar (October 20, 1898 – March 29, 1989) was an engineer, real estate developer and philanthropist who contributed to American and Israeli causes. He distinguished himself during World War II as a colonel in charge of military intelligence for the United States Army, earning the Bronze Star Medal, the Legion of Merit, and the Légion d'honneur. Elyachar was born on Octobe
  • 336
  • 15 Nov 2022
Biography
Raymond Stanton Patton
Rear Admiral Raymond Stanton Patton (29 December 1882 – 25 November 1937) was the second Director of the United States Coast and Geodetic Survey and a career officer in the United States Coast and Geodetic Survey Corps, predecessor of the National Oceanic and Atmospheric Administration Commissioned Officer Corps. He was the first Coast and Geodetic Survey Corps officer to reach flag rank. P
  • 336
  • 01 Dec 2022
Biography
Sherwood C. Spring
Sherwood Clark "Woody" Spring (born September 3, 1944) is a retired United States Army colonel and former NASA astronaut. Spring is married with two children. He is the father of United States Olympian Justin Spring. Sherwood Spring has logged 165 hours in space, 12 of which were spent conducting spacewalks. Spring has also accumulated 3,500 hours in 25 different military and civilian aircraft;
  • 336
  • 01 Dec 2022
Biography
John Hotaling
John Ritter Hotaling (March 3, 1824 – October 12,[1] 1886) was an United States soldier, engineer, and businessman. He served as a dragoon in the Mexican–American War and as a cavalry officer and senior staff member of General John Logan's during the American Civil War. After the war, Hotaling was elected postmaster of Rochelle, Illinois; a position he occupied for 15 years, after which he r
  • 333
  • 08 Dec 2022
Topic Review
Video Share
Video Share is an IP Multimedia System (IMS) enabled service for mobile networks that allows users engaged in a circuit switch voice call to add a unidirectional video streaming session over the packet network during the voice call. Any of the parties on the voice call can initiate a video streaming session. There can be multiple video streaming sessions during a voice call, and each of these streaming sessions can be initiated by any of the parties on the voice call. The video source can either be the camera on the phone or a pre-recorded video clip. Video share is initiated from within a voice call. After a voice call is established, either party (calling or called) can start a Video Share (VS) session. The sending User is then able to stream one-way live or recorded video. The default behavior is that the receiving handset will automatically go to speakerphone mode when video is received, unless the headset is in place. The sender will be able to see what is being streamed on their handset, along with the receiving User. In this scenario, the sender can “narrate” over the CS audio connection while both parties view the video. Both users will have the ability initiate a video share session, and either the sender or recipient in a video share session can terminate the session at any time. As part of the VS invitation, the recipient can choose to reject the streamed video. It is intended that both sender and receiver will receive feedback when the other party terminates a session or the link drops due to lack of coverage. The Video Share service is defined by the GSM Association (GSMA). It is often referred to as a Combinational Service, meaning that the service combines a circuit switch voice call with a packet switch multimedia session. This concept is described in the 3rd Generation Partnership Project (3GPP) specification documents 3GPP TS 22.279, 3GPP TS 23.279 and 3GPP TS 24.279. The Video Share service requires a 3GPP compliant IMS core system. GSM Association has split the Video Share service definition into 2 distinct phases. The first phase (also called Phase 1) involves sharing a simple peer-to-peer, one-way video stream in conjunction with, but not synchronized to a circuit switch voice call. The second phase (also called Phase 2) introduces the Video Share Application Server in the solution and supports more complex features and capabilities, such as point-to-multipoint video share calls, video streaming to a web portal, and integration of video share with instant messaging. In the industry, Video Share is also referred to by other names such as See What I See and Rich Voice Call. Video Share is supported only in UMTS and EDGE (with DTM) networks. It is not supported in a GPRS or a CDMA network. The Video Share Client will drop a VS session when the handset transitions from UMTS to GSM during the session. The CS voice call will remain connected. AT&T (formerly Cingular) is one of mobile operators who have deployed the Video Share service nationwide.
  • 324
  • 28 Nov 2022
Topic Review
OmniGo 100 Organizer Plus
The HP 200LX Palmtop PC (F1060A, F1061A, F1216A), also known as project Felix, is a personal digital assistant introduced by Hewlett-Packard in August 1994. It was often called a Palmtop PC, and it was notable that it was, with some minor exceptions, a MS-DOS-compatible computer in a palmtop format, complete with a monochrome graphic display, QWERTY keyboard, serial port, and PCMCIA expansion slot.
  • 323
  • 18 Oct 2022
Topic Review
USS Aramis (SP-418)
USS Aramis (SP-418/PY-7) was a yacht acquired by the United States Navy during World War I which served as a patrol boat off New York City, was then fitted with an experimental "underwater detection system" and depth charges as an anti-submarine vessel, and was briefly the flagship of a battleship squadron. She ended her career as a tender and houseboat to a survey vessel off the coast of Cuba, until disposed of in 1933.
  • 321
  • 24 Nov 2022
Topic Review
Industrial Design Centre
Coordinates: 19°08′00″N 72°55′03″E / 19.133408°N 72.917384°E / 19.133408; 72.917384 Industrial Design Centre (IDC) is one of the oldest design schools in India, established in 1969 by the Government of India at the campus of the Indian Institute of Technology Bombay. It offers a 4 year Bachelors program in design, an integrated program (5 year B.Des + M.Des) and a 2 year Master of Design program in Industrial Design, Communication Design, Animation, Interaction Design and Mobility & Vehicle Design. The school also has a Ph.D program in Design.
  • 318
  • 20 Oct 2022
Topic Review
Clean Air Delivery Rate
Clean Air Delivery Rate (CADR) is a figure of merit that is the cubic feet per minute (CFM) of air that has had all the particles of a given size distribution removed. For air filters that have air flowing through them, it is the fraction of particles (of a particular size distribution) that have been removed from the air times the CFM air flow rate through the device. More precisely, it is the CFM of air in a 1,008-cubic-foot (28.5 m3) room that has had all the particles of a given size distribution removed from the air, over and above the rate at which the particles are naturally falling out of the air. Different filters have different abilities to remove different particle distributions, so three CADR's for a given device are typically measured: smoke, pollen, and dust. By combining the amount of airflow and particle removal efficiency, consumers are less likely to be misled by a high efficiency filter that is filtering a small amount of air, or by a high volume of air that is not being filtered very well.
  • 318
  • 08 Nov 2022
Topic Review
H-500 Holon
The H-500 project is an outline planning scheme in accordance with the Planning and Building Law for South Holon, Israel. The area of the project is approximately 4,080 dunams and it is the largest, undeveloped land reserve remaining in Holon. The scheme is bounded in the north by Sderot Yerushalayim and the Kiryat Sharet and Kiryat Pinhas Ayalon neighbourhoods, in the east by Highway no. 4, in the south by the border with the city of Rishon LeZion and in the west by Highway 20 (Israel) (the Ayalon Highway).
  • 303
  • 02 Nov 2022
Topic Review
QsNet II
Quadrics was a supercomputer company formed in 1996 as a joint venture between Alenia Spazio and the technical team from Meiko Scientific. They produced hardware and software for clustering commodity computer systems into massively parallel systems. Their highpoint was in June 2003 when six out of the ten fastest supercomputers in the world were based on Quadrics' interconnect. They officially closed on June 29, 2009.
  • 302
  • 10 Oct 2022
Topic Review
EfficientNetB0 cum FPN-based Semantic Segmentation of Gastrointestinal Tract
This research proposes a hybrid encoder decoder-based model for semantic segmentation of the Gastrointestinal tract. Here EfficientNet B0 is used as a bottom-up encoder architecture for downsampling to capture contextual information by extracting meaningful and discriminative features from input images. The performance of the EfficientNet B0 encoder is compared with three encoders: ResNet 50, MobileNet V2, and Timm Gernet. Here, Feature Pyramid Network (FPN) is used as a top-down decoder architecture for upsampling to recover spatial information. The performance of the FPN decoder is compared with three decoders: PAN, Linknet, and MAnet. Furthermore, the proposed hybrid model is analyzed using Adam, Adadelta, SGD, and RMSprop optimizers. 
  • 296
  • 04 Aug 2023
Topic Review
Around View Monitor-Based Visual Simultaneous Localization and Mapping
Accurately estimating the pose of a vehicle is important for autonomous parking. The study of around view monitor (AVM)-based visual Simultaneous Localization and Mapping (SLAM) has gained attention due to its affordability, commercial availability, and suitability for parking scenarios characterized by rapid rotations and back-and-forth movements of the vehicle. 
  • 294
  • 18 Oct 2023
Topic Review
USS Adelante (SP-765)
The iron-hulled, single-screw steam yacht Utowana was completed in 1883 at Chester, Pennsylvania, by the Delaware River Iron Ship Building and Engine Works for Washington Everett Connor. On sale to Elias Cornelius Benedict the yacht's name was changed to Oneida (1887), then when Benedict bought a new yacht to be named Oneida and sale of the old yacht and conversion to a tow boat the name was changed to Adelante (1913). During Benedict's ownership Oneida was the covert site of an operation on President Grover Cleveland, a friend of Benedict's and frequent guest on the yacht, to remove a cancerous tumor in his mouth. She was taken over by the U.S. Navy in August 1918 and commissioned as USS Adelante (SP-765) in December 1918. Employed in setting up radio compass stations along the Maine coast, she was also used as a boarding boat, meeting vessels arriving off the port of Boston. USS Adelante was decommissioned in August 1919 and sold in March 1920, subsequently operating as a commercial tow boat under the names John Gully and Salvager. The ship was abandoned in 1941.
  • 292
  • 26 Oct 2022
Topic Review
Problem-Based Learning and Gamification in Engineering Education
This research explores the integration of problem-based learning, gamification, and data-driven approaches in engineering education. By tackling real-world issues like automated teller machine (ATM) burglaries in Rhineland-Palatinate (Germany), students gained experience in data analyses and geoinformatics technology. This approach not only motivated students but also enhanced their prospects in science, technology, engineering, and mathematics (STEM) fields, equipping them with skills necessary for their future careers. The course structure emphasized student-centered learning, with educators playing facilitative roles to provide guidance. In summary, the combination of problem-based learning, gamification, and data-driven approaches offers a promising solution to address the challenges faced by STEM education, providing an engaging and effective learning experience for students, and ultimately preparing them for the demands of the ever-evolving professional landscape.
  • 292
  • 15 Dec 2023
Topic Review
Bloch Wave – MoM Method
Bloch wave – MoM is a first principles technique for determining the photonic band structure of triply-periodic electromagnetic media such as photonic crystals. It is based on the 3-dimensional spectral domain method, specialized to triply-periodic media. This technique uses the method of moments (MoM) in combination with a Bloch wave expansion of the electromagnetic field to yield a matrix eigenvalue equation for the propagation bands. The eigenvalue is the frequency (for a given propagation constant) and the eigenvector is the set of current amplitudes on the surface of the scatterers. Bloch wave - MoM is similar in principle to the plane wave expansion method, but since it additionally employs the method of moments to produce a surface integral equation, it is significantly more efficient both in terms of the number of unknowns and the number of plane waves needed for good convergence. Bloch wave - MoM is the extension to 3 dimensions of the spectral domain MoM method commonly used for analyzing 2D periodic structures such as frequency selective surfaces (FSS). In both cases, the field is expanded as a set of eigenfunction modes (either a Bloch wave in 3D or a discrete plane wave - aka Floquet mode - spectrum in 2D), and an integral equation is enforced on the surface of the scatterers in each unit cell. In the FSS case, the unit cell is 2-dimensional and in the photonic crystal case, the unit cell is 3-dimensional.
  • 290
  • 13 Nov 2022
Biography
Roy F. Brissenden
Roy Frampton Brissenden (19 April 1919 – 13 March 1999) was a NASA physicist, engineer, teacher and inventor whose pioneering and imaginative work made possible the advancement and accomplishments of the Mercury, Gemini, Apollo, and Space Shuttle programs. Roy Frampton Brissenden was born, 19 April 1919, to Henry Frampton and Elsie Ball Brissenden in Winston-Salem, North Carolina, where he
  • 290
  • 13 Dec 2022
Topic Review
Schlüsselgerät 39
The Schlüsselgerät 39 (SG-39) was an electrically operated rotor cipher machine, invented by the German Fritz Menzer during World War II. The device was the evolution of the Enigma rotors coupled with three Hagelin pin wheels to provide variable stepping of the rotors. All three wheels stepped once with each encipherment. Rotors stepped according to normal Enigma rules, except that an active pin at the reading station for a pin wheel prevented the coupled rotor from stepping. The cycle for a normal Enigma was 17,576 characters. When the Schlüsselgerät 39 was correctly configured, its cycle length was [math]\displaystyle{ 2.7 x 10^8 }[/math] characters, which was more than 15,000 times longer than a standard Enigma. The Schlüsselgerät 39 was fully automatic, in that when a key was pressed, the plain and cipher letters were printed on separate paper tapes, divided into five-digit groups. The Schlüsselgerät 39 was abandoned by German forces in favour of the Schlüsselgerät 41.
  • 288
  • 19 Oct 2022
  • Page
  • of
  • 50
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
ScholarVision Creations
Feedback