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Constantine A. Balanis
Constantine A. Balanis is a Greek-born American scientist, educator, author, and Regents Professor at Arizona State University. Born in Trikala, Greece on October 29, 1938. He is best known for his books in the fields of engineering electromagnetics and antenna theory. He emigrated to the United States in 1955, where he studied electrical engineering. He received United States citizenship in 1960. Biography Balanis received the Bachelor of Science degree from Virginia Tech (Virginia Polytechnic Institute and State University), in 1964, the Master of Science degree from the University of Virginia, in 1966, and the Doctor of Philosophy degree in Electrical Engineering from Ohio State University, in 1969, and an Honorary Doctorate from the Aristotle University of Thessaloniki in 2004. From 1964 to 1970 he was with the National Aeronautics and Space Administration (NASA) Langley Research Center in Hampton, Virginia and from 1970 to 1983 he was with the Department of Electrical Eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trikala
Trikala ( el, Τρίκαλα; rup, Trikolj) is a city in northwestern Thessaly, Greece, and the capital of the Trikala regional unit. The city straddles the Lithaios river, which is a tributary of Pineios. According to the Greek National Statistical Service, Trikala is populated by 81,355 inhabitants (2011), while in total the Trikala regional unit is populated by 131,085 inhabitants (2011). Trikala is a lively Greek city with picturesque monuments and old neighborhoods with traditional architecture. The city is near Meteora and also near the mountain range of south Pindus, where there are many destinations (i.e. Pyli's stone bridge, Elati, Pertouli, Palaiokarya's stone bridge and waterfall, Pertouli Ski Center etc.). History Antiquity The region of Trikala has been inhabited since prehistoric times. The first indications of permanent settlement have been uncovered in the cave of Theopetra, and date back to approx. 49,000 BC. Neolithic settlements dating back to 6,000 BC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bachelor Of Science
A Bachelor of Science (BS, BSc, SB, or ScB; from the Latin ') is a bachelor's degree awarded for programs that generally last three to five years. The first university to admit a student to the degree of Bachelor of Science was the University of London in 1860. In the United States, the Lawrence Scientific School first conferred the degree in 1851, followed by the University of Michigan in 1855. Nathaniel Southgate Shaler, who was Harvard's Dean of Sciences, wrote in a private letter that "the degree of Bachelor of Science came to be introduced into our system through the influence of Louis Agassiz, who had much to do in shaping the plans of this School." Whether Bachelor of Science or Bachelor of Arts degrees are awarded in particular subjects varies between universities. For example, an economics student may graduate as a Bachelor of Arts in one university but as a Bachelor of Science in another, and occasionally, both options are offered. Some universities follow the Oxfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ElectroMagnetic Anechoic Chamber
In physics, electromagnetism is an interaction that occurs between particles with electric charge. It is the second-strongest of the four fundamental interactions, after the strong force, and it is the dominant force in the interactions of atoms and molecules. Electromagnetism can be thought of as a combination of electricity and magnetism, two distinct but closely intertwined phenomena. In essence, electric forces occur between any two charged particles, causing an attraction between particles with opposite charges and repulsion between particles with the same charge, while magnetism is an interaction that occurs exclusively between ''moving'' charged particles. These two effects combine to create electromagnetic fields in the vicinity of charge particles, which can exert influence on other particles via the Lorentz force. At high energy, the weak force and electromagnetic force are unified as a single electroweak force. The electromagnetic force is responsible for many of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chen-To Tai Distinguished Educator Award
The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operations center in Piscataway, New Jersey. The mission of the IEEE is ''advancing technology for the benefit of humanity''. The IEEE was formed from the amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers in 1963. Due to its expansion of scope into so many related fields, it is simply referred to by the letters I-E-E-E (pronounced I-triple-E), except on legal business documents. , it is the world's largest association of technical professionals with more than 423,000 members in over 160 countries around the world. Its objectives are the educational and technical advancement of electrical and electronic engineering, telecommunications, computer engineering and similar disciplines. History Origin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beamforming
Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception. This is achieved by combining elements in an antenna array in such a way that signals at particular angles experience constructive interference while others experience destructive interference. Beamforming can be used at both the transmitting and receiving ends in order to achieve spatial selectivity. The improvement compared with omnidirectional reception/transmission is known as the directivity of the array. Beamforming can be used for radio or sound waves. It has found numerous applications in radar, sonar, seismology, wireless communications, radio astronomy, acoustics and biomedicine. Adaptive beamforming is used to detect and estimate the signal of interest at the output of a sensor array by means of optimal (e.g. least-squares) spatial filtering and interference rejection. Techniques To change the directionality of the array when tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electromagnetic Metasurface
An electromagnetic metasurface refers to a kind of artificial sheet material with sub-wavelength thickness. Metasurfaces can be either structured or unstructured with subwavelength-scaled patterns in the horizontal dimensions. In electromagnetic theory, metasurfaces modulate the behaviors of electromagnetic waves through specific boundary conditions, rather than constitutive parameters in three dimensional (3D) space, which is commonly exploited in natural materials and metamaterials. Metasurfaces may also refer to the two-dimensional counterparts of metamaterials. Definitions Metasurfaces have been defined in several ways by researchers. 1, “An alternative approach that has gained increasing attention in recent years deals with one- and two-dimensional (1D and 2D) plasmonic arrays with subwavelength periodicity, also known as metasurfaces. Due to their negligible thickness compared to the wavelength of operation, metasurfaces can (near resonances of unit cell constituents) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosemary Renaut
Rosemary Anne Renaut is a British and American computational mathematician whose research interests include inverse problems and regularization with applications to medical imaging and seismic analysis. She is a professor in the School of Mathematical and Statistical Sciences at Arizona State University. Education and career Renaut earned a bachelor's degree in 1980 at Durham University and then studied for Part III of the Mathematical Tripos in applied mathematics at the University of Cambridge. She completed her Ph.D. at Cambridge in 1985. Her dissertation, ''Numerical Solution of Hyperbolic Partial Differential Equations'', was supervised by Arieh Iserles. After postdoctoral research at RWTH Aachen University in Germany and the Chr. Michelsen Institute in Norway, she joined the Arizona State University faculty as an assistant professor in 1987. She was promoted to associate professor in 1991 and full professor in 1996, and chaired the Department of Mathematics from 1997 to 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computational Electromagnetics
Computational electromagnetics (CEM), computational electrodynamics or electromagnetic modeling is the process of modeling the interaction of electromagnetic fields with physical objects and the environment. It typically involves using computer programs to compute approximate solutions to Maxwell's equations to calculate antenna performance, electromagnetic compatibility, radar cross section and electromagnetic wave propagation when not in free space. A large subfield is ''antenna modeling'' computer programs, which calculate the radiation pattern and electrical properties of radio antennas, and are widely used to design antennas for specific applications. Background Several real-world electromagnetic problems like electromagnetic scattering, electromagnetic radiation, modeling of waveguides etc., are not analytically calculable, for the multitude of irregular geometries found in actual devices. Computational numerical techniques can overcome the inability to derive closed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hampton, Virginia
Hampton () is an independent city in the Commonwealth of Virginia in the United States. As of the 2020 census, the population was 137,148. It is the 7th most populous city in Virginia and 204th most populous city in the nation. Hampton is included in the Hampton Roads Metropolitan Statistical Area (officially known as the Virginia Beach–Norfolk–Newport News, VA–NC MSA) which is the 37th largest in the United States, with a total population of 1,799,674 (2020). This area, known as "America's First Region", also includes the independent cities of Chesapeake, Virginia Beach, Newport News, Norfolk, Portsmouth, and Suffolk, as well as other smaller cities, counties, and towns of Hampton Roads. Hampton traces its history to the city's Old Point Comfort, the home of Fort Monroe for almost 400 years, which was named by the 1607 voyagers, led by Captain Christopher Newport, who first established Jamestown as an English colonial settlement. Since consolidation in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Langley Research Center
The Langley Research Center (LaRC or NASA Langley), located in Hampton, Virginia, United States of America, is the oldest of NASA's field centers. It directly borders Langley Air Force Base and the Back River on the Chesapeake Bay. LaRC has focused primarily on aeronautical research, but has also tested space hardware such as the Apollo Lunar Module. In addition, many of the earliest high-profile space missions were planned and designed on-site. Langley was also considered a potential site for NASA's Manned Spacecraft Center prior to the eventual selection of Houston, Texas. Established in 1917 by the National Advisory Committee for Aeronautics (NACA), the research center devotes two-thirds of its programs to aeronautics and the rest to space. LaRC researchers use more than 40 wind tunnels to study and improve aircraft and spacecraft safety, performance, and efficiency. Between 1958 and 1963, when NASA (the successor agency to NACA) started Project Mercury, LaRC served a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Aeronautics And Space Administration
The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown manageme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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