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[George Ballard]

Description: Photograph of North Texas State University mathematics student George Ballard, who was named to the campus Who's Who in 1969. Mr. Ballard is seen standing before a chalk board with mathematical notations, wearing a jacket and tie. Photo taken in 1969.
Date: 1969
Partner: UNT Libraries Special Collections

[George Ballard]

Description: Photograph of North Texas State University mathematics student George Ballard, who was named to the campus Who's Who in 1969. Mr. Ballard is seen standing before a chalk board with mathematical notations, wearing a jacket and tie. Photo taken in 1969.
Date: 1969
Partner: UNT Libraries Special Collections

[President Nolen presents Dr. John Allen with the Honor Professor Award, Honors Day, April 25, 1975]

Description: Photograph of North Texas State University president C.C. Nolen presenting Dr. John Allen of the Department of Mathematics with the Honor Professor Award, April 25, 1975. The presentation was part of the ceremonies of Honors Day, 1975. Both men are seen standing in an interior space.
Date: April 25, 1975
Partner: UNT Libraries Special Collections

[Dr. John Ed Allen]

Description: Photograph of Dr. John Ed Allen, professor of mathematics 1963-2011(?); Chairman of the Department of Mathematics, 1976-1999, and at various times professor, Associate Dean & Director of the Texas Academy of Math and Science 1988-2011(?).
Date: 1976~
Partner: UNT Libraries Special Collections

[Dr. John Ed Allen]

Description: Photograph of Dr. John Ed Allen, professor of mathematics 1963-2011(?); Chairman of the Department of Mathematics, 1976-1999, and at various times professor, Associate Dean & Director of the Texas Academy of Math and Science 1988-2011(?).
Date: 1976~
Partner: UNT Libraries Special Collections

[Dr. John Ed Allen]

Description: Photograph of Dr. John Ed Allen, professor of mathematics 1963-2011(?); Chairman of the Department of Mathematics, 1976-1999, and at various times professor, Associate Dean & Director of the Texas Academy of Math and Science 1988-2011(?).
Date: 1976~
Partner: UNT Libraries Special Collections

[Dr. John Ed Allen]

Description: Photograph of Dr. John Ed Allen, professor of mathematics 1963-2011(?); Chairman of the Department of Mathematics, 1976-1999, and at various times professor, Associate Dean & Director of the Texas Academy of Math and Science 1988-2011(?).
Date: 1976~
Partner: UNT Libraries Special Collections

[Dr. John Ed Allen]

Description: Photograph of Dr. John Ed Allen, professor of mathematics 1963-2011(?); Chairman of the Department of Mathematics, 1976-1999, and at various times professor, Associate Dean & Director of the Texas Academy of Math and Science 1988-2011(?).
Date: 1976~
Partner: UNT Libraries Special Collections

[Dr. John Ed Allen]

Description: Photograph of Dr. John Ed Allen, professor of mathematics 1963-2011(?); Chairman of the Department of Mathematics, 1976-1999, and at various times professor, Associate Dean & Director of the Texas Academy of Math and Science 1988-2011(?).
Date: 1976~
Partner: UNT Libraries Special Collections

The Spreading of Charged Micro-Droplets

Description: This article considers the analysis of the Betelu-Fontelos model of the spreading of a charged microdroplet on a at dielectric surface whose spreading is driven by surface tension and electrostatic repulsion.
Date: January 20, 2015
Creator: Iaia, Joseph A.
Partner: UNT College of Arts and Sciences

Existence of Solutions for Semilinear Problems With Prescribed Number of Zeros on Exterior Domains

Description: This article proves the existence of an infinite number of radial solutions of Δ(u) + f(u) = 0 with prescribed number of zeros on the exterior of the ball of radius R > 0 centered at the origin in ℝᴺ where f is odd with f < 0 on (0, β), f > 0 on (β,∞) where β > 0.
Date: May 3, 2016
Creator: Joshi, Janak & Iaia, Joseph A.
Partner: UNT College of Arts and Sciences

Geothermal field's interaction with geophysical fields of another nature

Description: The energy balance of active lithosphere zones is to a large extent determined by nonstationary interaction of mechanical (elastic and hydrodynamic), thermal, electromagnetic, and gravitational geophysical fields. Seismic disturbances of electromagnetic and temperature fields, repeatedly observed before earthquakes are a striking manifestation of this interaction (Sec. 1). Technological processes of exploitation of hydrothermal deposits are determined by the interaction of hydrodynamical and temperature field (Sec. 2). These “fast” interactions (with the characteristic time scale from seconds to years) take place against the background of “slow” thermomechanical interactions (time scale of Myears), the latter determining the formation of regional geothermal fields (Sec. 3).
Date: January 24, 1996
Creator: Novik, Oleg B.; Mikhailovskaya, Irina B.; Repin, Dmitry G. & Yershov, Sergey V.
Partner: UNT Libraries Government Documents Department

Mathematics and string theory

Description: The continuation of the collaboration with Liu and Lian on the calculation of the II A model opened up the possibility to understand calculations for higher genus curves also; many detailed calculations were carried out. They provided evidence that the method is powerful enough to calculate GW invariants in many cases. Local mirror symmetry was worked out with Chiang, Klemm, and Zaslow; it is consistent with physics intuition. Work was carried out to advance the ideas of Stroninger-Yau-Zaslow's geometric version of mirror symmetry in terms of special Lagragian torus fibration. Several papers were written on understanding such duality; it fits well with the predictions, and the ideas are still being studied.
Date: November 25, 2002
Creator: Yau, Shing-Tung
Partner: UNT Libraries Government Documents Department

Nursery Cultural Practices and Morphological Attributes of Longleaf Pine Bare-Root Stock as Indicators of Early Field Performance

Description: A large study of morphological attributes of longleaf pine nursery stock at the Savannah River site of the various attributes measured, only number of lateral roots and seedling diameters were related to performance. Lateral root pruning in the nursery also improved performance. Both survival and growth during the first two years were strongly correlated with larger stem diameter and larger root system development.
Date: February 1990
Creator: Hatchell, Glyndon E. & Muse, H. David
Partner: UNT Libraries Government Documents Department

Existence and Nonexistence of Solutions for Semilinear Equations on Exterior Domains

Description: This article studies radial solutions of Δu + K(r)ƒ(u) = 0 on the exterior of the ball of radius R > 0 centered at the origin in ℝᴺ where ƒ is odd with ƒ < 0 on (0,ß), ƒ > 0 on (β, δ), ƒ ≡ 0 for u > δ, and where the function K(r) is assumed to be positive and K(r) → 0 as r → ∞.
Date: August 22, 2016
Creator: Iaia, Joseph A.
Partner: UNT College of Arts and Sciences

Existence of Solutions for Sublinear Equations on Exterior Domains

Description: This article proves the existence of an infinite number of radial solutions of Δu+K(r)ƒ(u) = 0, one with exactly n zeros for each nonnegative integer n on the exterior of the ball of radius R > 0, Bʀ, centered at the origin in ℝᴺ with u = 0 on ∂Bʀ and limᵣ→∞u(r) = 0 where N > 2, f is odd with ƒ < 0 on (0; β), ƒ > 0 on (β;∞), ƒ(u) ~ uᵖ with 0 < p < 1 for large u and K(r) ~ r-α with 0 < α < 2 for large r.
Date: October 10, 2017
Creator: Iaia, Joseph A.
Partner: UNT College of Arts and Sciences