The design of a diode laser frequency stabilization system using the Zeeman effect is described. Various regimes of operation are analyzed using the Jones matrix approach. The system is different from the original Joint Institute for Laboratory Astrophysics design in that the magnetic fields are fully contained and thus it can be used in proximity of magnetically sensitive instruments.

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This study describes an extension of Kazdin's work on acceptability of behavior therapy methods to the assessment of acceptability in the developing field of behavioral staff management. An instrument for assessing acceptability of behavioral staff management techniques was developed and then used to assess staff evaluations of four techniques that have been researched in the staff management literature (instruction, reinforcement, punishment, self-management). The effects on acceptability of problem difficulty and duration of supervisor-staff interaction were also investigated. Staff identified the techniques as having differing degrees of acceptability, with instruction rated most acceptable, followed in order by self-management, reinforcement, and punishment. Ancillary studies supported the reliability and validity of the scale. Results are placed within the context of a recent behavioral supervision model, and discussed in terms of social validity and consumer satisfaction issues. Implications for delivering behavioral staff management interventions are presented.

This trial compared two approaches used to introduce parenting skills in a residential staff training program. Fifty staff were randomly assigned to: mastery modelling in which videotaped models demonstrated new skills, coping modelling problem solving (CMPS) in which participants formulated their own solutions to the errors depicted by videotaped models, or a waiting-list control group. In both, leaders used modelling, role playing, and homework projects to promote mastery and transfer of new skills. The skills of all groups improved, but CMPS participants attended more sessions, were late to fewer sessions, completed more homework, engaged in more cooperative in-session interaction, rated the program more positively, and reported higher job accomplishment scores. These data suggest that CMPS allowing participants to formulate their own solutions may enhance adherence and reduce the resistance observed in more didactic programs.

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An experimental–analytical method for the nondestructive structural and chemical composition mapping of single-crystal alloys is proposed, implemented, and successfully tested. The technique is based on analytical measurements of phase and amplitude changes in a narrow polychromatic region near the absorption edge of the alloy impurity. Synchrotron radiation energies of 11.096–11.105 keV were used to measure the Bragg diffraction profiles near the absorption edge of germanium at 11.103 keV in SiGe/Si crystal alloy superstructures. Physical dimensions and chemical composition of SiGe alloys were determined with a spatial resolution 8.6 Å.

The variability of gamma-ray and neutron background during the operation of a mobile detector system greatly limits the ability of the system to detect weak radiological and nuclear threats. The natural radiation background measured by a mobile detector system is the result of many factors, including the radioac

In this paper we describe a regularization approach to diffraction enhanced tomography. This approach represents an improvement over methods based on a geometrical optics approximation. Reconstructed images of the attenuation coefficients and refractive indices of computer generated phantoms are presented. An experimental scheme is also discussed, which utilizes a first-generation tomography set-up, in conjunction with an analyser crystal.