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  Partner: UNT College of Arts and Sciences
Response of Complex Systems to Complex Perturbations: the Complexity Matching Effect

Response of Complex Systems to Complex Perturbations: the Complexity Matching Effect

Date: December 2006
Creator: Allegrini, Paolo; Bologna, Mauro; Grigolini, Paolo & West, Bruce J.
Description: This article discusses the complexity matching effect. The dynamical emergence (and subsequent intermittent breakdown) of collective behavior in complex systems is described as a non-Poisson renewal process, characterized by a waiting-time distribution density ψ(T) for the time intervals between successfully recorded breakdowns. In the intermittent case ψ(t) ~ t-μ, with complexity index μ. The authors show that two systems can exchange information through complexity matching and present theoretical and numerical calculations describing a system with complexity index μs perturbed by a signal with complexity index μp. The analysis focuses on the non-ergodic (non-stationary) case μ ≤ 2 showing that for μs ≥ μp, the system S statistically inherits the correlation function of the perturbation P. The condition μp = μs is a resonant maximum for correlation information exchange.
Contributing Partner: UNT College of Arts and Sciences
Response to "A critique of Abraham and Acree's correlation for deca-1,9-diene/water partition coefficients"

Response to "A critique of Abraham and Acree's correlation for deca-1,9-diene/water partition coefficients"

Date: February 1, 2013
Creator: Abraham, M. H. (Michael H.) & Acree, William E. (William Eugene)
Description: This article is a response to "A critique of Abraham and Acree's correlation for deca-1,9-diene/water partition coefficients." Abstract: The manuscript responds to the critique of Nitsche and Kasting concerning our published correlation for deca-1,9-diene-water partition coefficients. Several statements made in the critique are refuded, and shown to be misrepresentations of ideas contained in our earlier paper.
Contributing Partner: UNT College of Arts and Sciences
Response to: Use of prior odds for missing persons identifications - author's reply

Response to: Use of prior odds for missing persons identifications - author's reply

Date: February 1, 2012
Creator: Budowle, Bruce; Ge, Jianye; Chakraborty, Ranajit & Gill-King, Harrell
Description: This article is in response to an authors' reply to 'Use of prior odds for missing persons identifications.' This response is to the reply by Alex Biedermann, Franco Taroni, and Pierre Margot.
Contributing Partner: UNT College of Arts and Sciences
Reversible Beta-Hydrogen Elimination of Three-Coordinate Iron(II) Alkyl Complexes: Mechanistic and Thermodynamic Studies

Reversible Beta-Hydrogen Elimination of Three-Coordinate Iron(II) Alkyl Complexes: Mechanistic and Thermodynamic Studies

Date: October 1, 2004
Creator: Vela, Javier; Vaddadi, Sridhar; Cundari, Thomas R., 1964-; Smith, Jeremy M.; Gregory, Elizabeth A.; Lachicotte, Rene J. et al
Description: This article discusses reversible beta-hydrogen elimination of three-coordinate iron(II) alkyl complexes. High-spin organometallic complexes have not received extensive mechanistic study, despite their potential importance as unsaturated intermediates in catalytic transformations. The authors have found that, with a suitably bulky bidentate ligand, three-coordinate, high-spin alkyl complexes of iron(II) are stable. They undergo isomerization and exchange reactions of the alkyl group through β-hydride elimination and reinsertion, and the β-hydride elimination step is rate-limiting. The alkyl complexes transfer a β-hydrogen atom to C=C, C=N, and C=O double bonds and undergo deprotonation by Brønsted acids. The reversible β-hydride elimination reactions can be used to explore relative M-C bond energies. Competition experiments and density functional calculations demonstrate an enthalpic preference for alkyl isomers with iron bound to the terminal carbon of the alkyl fragment. This preference arises from steric and electronic effects. The steric preference could be overcome with a phenyl substituent, which steers iron to the benzylic position. A Hammett correlation and density functional calculations suggest that the substituent effect is attributable to resonance stabilization of partial negative charge on the alkyl ligand.
Contributing Partner: UNT College of Arts and Sciences
Reversing the Bricks: The Evolution of ETDs at UNT

Reversing the Bricks: The Evolution of ETDs at UNT

Date: March 31, 2011
Creator: Terrell, Sandra L.
Description: This presentation discusses electronic theses and dissertations (ETDs). Beginning in fall 1999, UNT has required the submission of theses and dissertations in electronic format. As an early adopter of what was to become the electronic thesis and dissertation (ETD) movement in higher education, UNT encountered and overcame several challenges in the pursuit of providing greater public access to the scholarship conducted at the University. Dr. Terrell was there from the very beginning, and will share her unique perspective on how far the ETD movement has come, and what challenges remain.
Contributing Partner: UNT College of Arts and Sciences
[Review] A Grammar of Mongsen Ao

[Review] A Grammar of Mongsen Ao

Date: 2010
Creator: Chelliah, Shobhana L.
Description: This book review discusses 'A Grammar of Mongsen Ao' by Alec R. Coupe. Ao is one of the approximately 20 indigenous languages of Nagaland spoken in around fifty villages in northwestern area of the state. This book reviews discusses each of the eleven chapters in the book.
Contributing Partner: UNT College of Arts and Sciences
[Review] Chemistry of Advanced Materials: An Overview

[Review] Chemistry of Advanced Materials: An Overview

Date: December 29, 1998
Creator: Cundari, Thomas R., 1964-
Description: This book review discusses 'Chemistry of Advanced Materials: An Overview', edited by Leonard V. Interrante from Renssalaer Polytechnic Institute, and Mark J. Hampden-Smith from the University of New Mexico.
Contributing Partner: UNT College of Arts and Sciences
[Review] Communications and Management at Work

[Review] Communications and Management at Work

Date: 2008
Creator: Friess, Erin
Description: This book review discusses 'Communication and Management at Work' by Thomas Klikauer. The book, intended primarily for scholars of management, business, and organizational communication, invokes the theories of Kant, Habermas, Orwell, and Marx to assess at a macro level the historical and contemporary relationships between communication and control in the workplace.
Contributing Partner: UNT College of Arts and Sciences
[Review] Computational Inorganic and Bioinorganic Chemistry

[Review] Computational Inorganic and Bioinorganic Chemistry

Date: April 28, 2010
Creator: Cundari, Thomas R., 1964-
Description: This book review discusses 'Computational Inorganic and Bioinorganic Chemistry', edited by Edward I. Solomon from Stanford University, Robert A. Scott from the University of Georgia Athens, and R. Bruce King from the University of Georgia Athens.
Contributing Partner: UNT College of Arts and Sciences
[Review] Deciphering the Chemical Code: Bonding Across the Periodic Table

[Review] Deciphering the Chemical Code: Bonding Across the Periodic Table

Date: August 20, 1997
Creator: Cundari, Thomas R., 1964-
Description: This book review discusses 'Deciphering the Chemical Code: Bonding Across the Periodic Table' by Nicolaos D. Epiotis from the University of Washington. The reviewer describes the work as a new theoretical framework for describing chemical bonding and gives specific information on what's covered in the book, the themes, and ideal audiences.
Contributing Partner: UNT College of Arts and Sciences