This paper reports on design studies concerning a moderator concept which aims to maximize the time averaged flux. The idea is to provide neutron spectra showing two clear maxima, with peaks at (~1 A) and (~2.5 A) arising from leakage from both cryogenic and thermal moderators. Such a concept known as a bi-spectral moderator (Mezei, 2006 [1]) while proven on a reactor source has only been exami...

A multivariate model of adjustment was used to examine the role of moderator variables hypothesized to provide insight into the adjustment of children of alcoholics. The moderator variables (family environment, social support and coping behaviors) were assessed retrospectively. Present adjustment was also assessed using the Depression-Proneness Rating Scale and the Tennessee Self-Concept Scale....

In this article, we attempt to distinguish between the properties of moderator and mediator variables at a number of levels. First, we seek to make theorists and researchers aware of the importance of not using the terms moderator and mediator interchangeably by carefully elaborating, both conceptually and strategically, the many ways in which moderators and mediators differ. We then go beyond ...

OBJECTIVE To present data on moderators and mediators of treatment response from the Multimodal Treatment Study of Children With ADHD (MTA). METHODS Moderator variables (baseline factors that define subgroups with greater vs lesser intervention response) and mediator variables (factors occurring during treatment that explain how interventions "work") are described with specific application to...

OBJECTIVE To provide examples of post-hoc probing of significant moderator and mediator effects in research on children with pediatric conditions. METHODS To demonstrate post-hoc probing of moderational effects, significant two-way interaction effects (dichotomous variable x continuous variable; continuous variable x continuous variable) were probed with regressions that included conditional ...

In this study, we investigated the personality variable quality of object relations (QOR) as a moderator of the relationship between the pattern of the therapeutic alliance and treatment outcome in two forms (interpretive, supportive) of short-term individual psychotherapy. In a sample of 72 psychiatric outpatients who completed interpretive therapy, QOR emerged as a moderator for the outcome f...

The goal of AOP is to achieve an improved separation of concerns in both design, and implementation. Our work concentrates on the aspectual decomposition of concurrent object-oriented systems. Following a component hierarchy within the object-oriented programming paradigm we categorized aspects as intra-method, intra-object and intra-package according to their hierarchical level of cross-cuttin...

Most HWRs currently use natural uranium fuel. Using enriched uranium fuel results in a significant improvement in fuel cycle costs and uranium utilization. On the other hand, reactivity changes of HWRs over the full range of operating conditions from cold shutdown to full power are small. This reduces the required reactivity worth of control devices and minimizes local flux distribution perturb...

background: several landmine detection methods, based on nuclear techniques, have been suggested up to now. neutron-induced gamma emission, neutron and gamma attenuation, and fast neutron backscattering are the nuclear methods used for landmine detection. in this paper an optimized (safe and effective) moderating structure using an 241am-be neutron source for detecting landmines has been invest...