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Topic Review
Technology for Science Education
The COVID-19 confinement has represented both opportunities and losses for education. Rarely before has any other period moved the human spirit into such discipline or submission—depending on one’s personal and emotional points of view. Both extremes have been widely influenced by external factors on each individual’s life path. Education in the sciences and engineering has encountered more issues than other disciplines due to specialized mathematical handwriting, experimental demonstrations, abstract complexity, and lab practices. 
  • 1.2K
  • 22 Sep 2021
Biography
Beatrice Aitchison
Beatrice Aitchison (July 18, 1908 – September 22, 1997) was an American mathematician, statistician, and transportation economist who directed the Transport Economics Division of the United States Department of Commerce,[1] and later became the top woman in the United States Postal Service and the first policy-level appointee there.[2] Aitchison's mother was a musician and her father, Clyde
  • 1.2K
  • 01 Dec 2022
Topic Review
Petr–Douglas–Neumann Theorem
In geometry, the Petr–Douglas–Neumann theorem (or the PDN-theorem) is a result concerning arbitrary planar polygons. The theorem asserts that a certain procedure when applied to an arbitrary polygon always yields a regular polygon having the same number of sides as the initial polygon. The theorem was first published by Karel Petr (1868–1950) of Prague in 1908. The theorem was independently rediscovered by Jesse Douglas (1897–1965) in 1940 and also by B H Neumann (1909–2002) in 1941. The naming of the theorem as Petr–Douglas–Neumann theorem, or as the PDN-theorem for short, is due to Stephen B Gray. This theorem has also been called Douglas's theorem, the Douglas–Neumann theorem, the Napoleon–Douglas–Neumann theorem and Petr's theorem. The PDN-theorem is a generalisation of the Napoleon's theorem which is concerned about arbitrary triangles and of the van Aubel's theorem which is related to arbitrary quadrilaterals.
  • 1.2K
  • 28 Nov 2022
Topic Review
Design and Experience of Mobile Applications
With the tremendous growth in mobile phones, mobile application development is an important emerging arena. Moreover, various applications fail to serve the purpose of getting the attention of the intended users, which is determined by their User Interface (UI) and User Experience (UX). As a result, developers often find it challenging to meet the users’ expectations. Various aspects of design and the experience of mobile applications using UX/UI are explored. 
  • 1.2K
  • 20 Jul 2022
Topic Review
Oscillation of Solutions for Fractional Difference Equations
Oscillation is one of the important branches in applied mathematics and can be induced or destroyed by the introduction of nonlinearity, delay, or a stochastic term. The oscillation of differential and difference equations contributes to many realistic applications, such as torsional oscillations, the oscillation of heart beats, sinusoidal oscillation, voltage-controlled neuron models, and harmonic oscillation with damping. 
  • 1.2K
  • 29 Apr 2022
Topic Review
Mersenne Conjectures
In mathematics, the Mersenne conjectures concern the characterization of prime numbers of a form called Mersenne primes, meaning prime numbers that are a power of two minus one.
  • 1.2K
  • 10 Oct 2022
Biography
Valentin Danilovich Belousov
Belousov Valentin Danilovich (20 February 1925 – 23 July 1988) was a Moldavian Soviet mathematician and a corresponding member of the Academy of Pedagogical Sciences of the USSR (1968).[1][2] He graduated from the Kishinev Pedagogical Institute (1947), Doctor of Physical and Mathematical Sciences (1966), Professor (1967), honored worker of science and technology of the Moldavian SSR. Since 1
  • 1.2K
  • 23 Nov 2022
Biography
Delfim Fernando Marado Torres (Delfim F. M. Torres)
Professor Dr. Delfim F. M. Torres, D.Sc. (Habilitation) in Mathematics, Ph.D. in Mathematics, Web of Science Highly Cited Researcher (2015, 2016, 2017 and 2019). Full Professor of Mathematics (Professor Catedrático), Department of Mathematics, University of Aveiro, 3810-193 Aveiro, Portugal. Director of the R&D unit CIDMA (http://cidma.ua.pt). Coordinator of the Systems and Control Group (http:
  • 1.1K
  • 04 Mar 2024
Biography
Gordon L. Kane
Gordon Leon Kane (born January 19, 1937) is Victor Weisskopf Distinguished University Professor at the University of Michigan and Director Emeritus at the Leinweber Center for Theoretical Physics (LCTP), a leading center for the advancement of theoretical physics. He was director of the LCTP from 2005 to 2011 and Victor Weisskopf Collegiate Professor of Physics from 2002 - 2011. He received the
  • 1.1K
  • 17 Nov 2022
Biography
Emilio Del Giudice
Emilio Del Giudice (1 January 1940 – 31 January 2014) was an Italian theoretical physicist who worked in the field of condensed matter. Pioneer of string theory in the early 1970s, later on he became better known for his work with Giuliano Preparata at the Italian Institute for Nuclear Physics (INFN). During the 1970s, along with Sergio Fubini, Paolo Di Vecchia and Gabriele Veneziano, Del G
  • 1.1K
  • 29 Dec 2022
Biography
Kate Claghorn
Kate Holladay Claghorn (1864–1938) was an American sociologist, economist, statistician, legal scholar, and Progressive Era activist, who became one of the founders of the National Association for the Advancement of Colored People. Claghorn was born on February 12, 1864 in Aurora, Illinois, but grew up in New York City . She earned a bachelor's degree in 1892 from Bryn Mawr College, and com
  • 1.1K
  • 09 Dec 2022
Biography
Alexey Parshin
Aleksei (or Alexei) Nikolaevich Parshin (Russian: Алексей Николаевич Паршин; born 7 November 1942 in Sverdlovsk) is a Russian mathematician, specializing in number theory and algebraic geometry. Parshin graduated in 1964 from the Faculty of Mathematics and Mechanics of Moscow State University and then enrolled as a graduate student at the Steklov Institute of Mathematic
  • 1.1K
  • 05 Dec 2022
Biography
Brendan McKay
Brendan Damien McKay (born 26 October 1951 in Melbourne, Australia ) is an Emeritus Professor in the Research School of Computer Science at the Australian National University (ANU). He has published extensively in combinatorics. McKay received a Ph.D. in mathematics from the University of Melbourne in 1980, and was appointed Assistant Professor of Computer Science at Vanderbilt University, Nash
  • 1.1K
  • 13 Dec 2022
Biography
Margaret Jarman Hagood
Margaret Loyd Jarman "Marney" Hagood (1907–1963) was an American sociologist and demographer who "helped steer sociology away from the armchair and toward the calculator".[1] She wrote the books Mothers of the South (1939) and Statistics for Sociologists (1941), and later became president of the Population Association of America and of the Rural Sociological Society. Hagood was born on Octo
  • 1.1K
  • 08 Dec 2022
Topic Review
Oscillatory Properties of Noncanonical Neutral DDEs of Second-Order
A DDE is a single-variable differential equation, usually called time, in which the derivative of the solution at a certain time is given in terms of the values of the solution at earlier times. Moreover, if the highest-order derivative of the solution appears both with and without delay, then the DDE is called of the neutral type. The neutral DDEs have many interesting applications in various branches of applied science, as these equations appear in the modeling of many technological phenomena. The problem of studying the oscillatory and nonoscillatory properties of DDEs has been a very active area of research in the past few decades.
  • 1.1K
  • 19 Jul 2022
Biography
Jeff Gill
Jefferson Morris Gill (born December 22, 1960) is Distinguished Professor of Government, and of Mathematics & Statistics, the Director of the Center for Data Science, the Editor of Political Analysis, and a member of the Center for Behavioral Neuroscience at American University as of the Fall of 2017. He was a Professor of Political Science at Washington University in St. Louis and the Director
  • 1.1K
  • 28 Dec 2022
Biography
Sunil Mukhi
Sunil Mukhi is an Indian theoretical physicist working in the areas of string theory, quantum field theory and particle physics. Currently he is a physics professor at IISER Pune. He is also the dean of faculty here. He obtained a B.Sc. degree at St. Xavier's College, Mumbai and a Ph.D. in Theoretical Physics in 1981 from Stony Brook University (then called the State University of New York at
  • 1.1K
  • 16 Nov 2022
Biography
John Howard Redfield
John Howard Redfield (June 8, 1879 – April 17, 1944) was an United States mathematician, best known for discovery of what is now called Pólya enumeration theorem (PET) in 1927,[1] ten years ahead of similar but independent discovery made by George Pólya. Redfield was a great-grandson of William Charles Redfield, one of the founders and the first president of AAAS. Redfield's ability is ev
  • 1.0K
  • 09 Dec 2022
Topic Review
Predictive Maintenance of Ball Bearing Systems
In the era of Industry 4.0 and beyond, ball bearings remain an important part of industrial systems. The failure of ball bearings can lead to plant downtime, inefficient operations, and significant maintenance expenses.
  • 1.0K
  • 01 Feb 2024
Topic Review
Dynamic Rectangle
A dynamic rectangle is a right-angled, four-sided figure (a rectangle) with dynamic symmetry, which in this case, means that aspect ratio (width divided by height) is a distinguished value in dynamic symmetry, a proportioning system and natural design methodology described in Jay Hambidge's books. These dynamic rectangles begin with a square, which is extended (using a series of arcs and cross points) to form the desired figure, which can be the golden rectangle (1 : 1.618...), the 2:3 rectangle, the double square (1:2), or a root rectangle (1:√φ, 1:√2, 1:√3, 1:√5, etc.).
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  • 20 Oct 2022
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