Solution of variational problems by means of a generalized Newton-Raphson operator

Generalized Newton-Raphson operator for solving variational problem

Mechanism of the photovoltaic effect in 2-6 compounds Progress report, 1 Apr. - 30 Sep. 1967

Mechanism for photovoltaic effects in heterojunctions in group 2 to 6 compounds with metallic or quasimetallic barrier layer

Mechanism of the photovoltaic effect in 2-6 compounds Progress report, 1 Oct. 1967 - 31 Mar. 1968

Mechanisms of photovoltaic effects in heterojunctions in group 2 to 6 compounds with metallic or quasimetallic barrier layer

Thin film GaAs photovoltaic solar energy cells

Fabrication process for thin film gallium arsenide photovoltaic solar energy cell

Mechanism of the photovoltaic effects in 2-4 compounds Progress report, 1 Apr. - 30 Sep. 1968

Current gain mechanism in copper sulfide-cadmium sulfide diode upon photoexcitation in presence of reverse bia

The Lone Actor Terrorist and the TRAP-18

An open source sample of 111 lone actor terrorists from the United States and Europe were studied through the lens of the Terrorist Radicalization Assessment Protocol (TRAP-18). This investigative template consists of 8 proximal warning behaviors and 10 distal characteristics for active risk management or active monitoring, respectively, by national security threat assessors. Several aspects of criterion validity were tested in this known outcome sample. Seventy per cent of the terrorists were positive for at least half or more of the indicators. When the sample was divided into Islamic extremists, right wing extremists, and single issue terrorists, there were no significant differences across all eighteen indicators except for four. When the sample was divided according to successful vs. thwarted attackers, the successful attackers were significantly more fixated, creative and innovative, and failed to have a prior sexually intimate pair bond. They were significantly less likely to have displayed pathway warning behavior and be dependent on a virtual community of likeminded true believers. Effect sizes were small to medium (phi = 0.190-0.317). The TRAP-18 appears to have promise as an eventual structured professional judgment risk assessment instrument according to some of the individual terrorist content domains outlined by Monahan (2012, 2016)

Thin-film GaAs photovoltaic solar energy cells Final report

Thin film gallium arsenide photovoltaic solar cell

Transfer of ultra-low phase noise microwave references over the JANET Aurora fibre network using a femtosecond optical frequency comb

An ultra-low phase noise microwave frequency is transferred over 82 km of installed fibre by propagation of a 30 nm bandwidth optical frequency comb (104 modes). The phase noise induced along the fibre by vibrations and thermal effects is suppressed by implementing a noise cancellation scheme where a portion of the light is sent back to the transmitter through the same fibre. The 6th harmonic of the repetition rate detected before and after the pulse train has travelled a round trip are phase compared and used to generate an error signal that controls a fibre stretcher to compensate for the fibre-induced phase fluctuations. Optical amplifiers are used to compensate for the fibre attenuation and dispersion compensation modules are also employed