WorldCat Identities

Roberts, Alexander J.

Overview
Works: 4 works in 5 publications in 1 language and 58 library holdings
Genres: Academic theses 
Roles: Author
Classifications: AS36,
Publication Timeline
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Most widely held works by Alexander J Roberts
The impact of trait displaced aggression on impulsivity, criminal behavior, and drug use by Alexander J Roberts( Book )

1 edition published in 2014 in English and held by 51 WorldCat member libraries worldwide

Abstract: Crime and drug use are social issues that have profound negative effects on society. Trait displaced aggression (TDA) is the tendency of an individual to respond to a provocation by aggressing against a target other than the original provocateur. The current study was the first to examine whether TDA was associated with (a) specific criminal behaviors, and (b) specific types of drug use as well as the first to assess the potential mediating effect of impulsivity on these relationships. Participants were administered self-report questionnaires assessing TDA, drug use, criminal behavior, and impulsivity. TDA was related to violent but not nonviolent crime and this relationship was mediated by impulsivity. In addition, TDA was related to the use of several specific drugs including crack, marijuana, and cocaine. Implications of these findings for reducing both crime and drug use will be discussed
Can explicit convection improve modelled dust in summertime West Africa? by Alexander J Roberts( )

2 editions published in 2018 in English and held by 4 WorldCat member libraries worldwide

The contrasting roles of water and dust in controlling daily variations in radiative heating of the summertime Saharan heat low by John H Marsham( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

Nano-sized Mo- and Nb-doped TiO2 as anode materials for high energy and high power hybrid Li-ion capacitors( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Abstract: Nano-sized Mo-doped titania (Mo0.1 Ti0.9 O2 ) and Nb-doped titania (Nb0.25 Ti0.75 O2 ) were directly synthesized via a continuous hydrothermal flow synthesis process. Materials characterization was conducted using physical techniques such as transmission electron microscopy, powder x-ray diffraction, x-ray photoelectron spectroscopy, Brunauer-Emmett-Teller specific surface area measurements and energy dispersive x-ray spectroscopy. Hybrid Li-ion supercapacitors were made with either a Mo-doped or Nb-doped TiO2 negative electrode material and an activated carbon (AC) positive electrode. Cells were evaluated using electrochemical testing (cyclic voltammetry, constant charge discharge cycling). The hybrid Li-ion capacitors showed good energy densities at moderate power densities. When cycled in the potential window 0.5-3.0 V, the Mo0.1 Ti0.9 O2 /AC hybrid supercapacitor showed the highest energy densities of 51 Wh kg −1 at a power of 180 W kg −1 with energy densities rapidly declining with increasing applied specific current. In comparison, the Nb0.25 Ti0.75 O2 /AC hybrid supercapacitor maintained its energy density of 45 Wh kg −1 at 180 W kg −1 better, showing 36 Wh g −1 at 3200 W kg −1, which is a very promising mix of high energy and power densities. Reducing the voltage window to the range 1.0-3.0 V led to an increase in power density, with the Mo0.1 Ti0.9 O2 /AC hybrid supercapacitor giving energy densities of 12 Wh kg −1 and 2.5 Wh kg −1 at power densities of 6700 W kg −1 and 14 000 W kg −1, respectively
 
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