The episodic–semantic memory distinction and paired associate learning.

39 senile dementia patients (mean age 69.1 yrs) completed the Associate Learning subtest of the Wechsler Memory Scale, and orthogonal measures of episodic and semantic memory were developed through factor analysis. As predicted, scores on the semantic factor were related only to learning high-associate word pairs; scores on the episodic factor were related to both high- and low-associate learning. Findings provide an interpretive framework for the Associate Learning subtest and support E. Tulving's (1972) 2-store model of long-term memory. (9 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Refractory metal silicide formation by ion implantation

A systematic study of interface mixing of transition metal-Si structures by ion implantation was carried out. High resolution Auger analyses at the mixed region of the implanted samples showed an energy shift of the Auger Si LVV transition and a change in the spectrum relative to that of elemental silicon. The elemental depth distribution obtained using Auger electron spectroscopy combined with ion sputtering illustrated a composition plateau for the ion-implanted structures. The X-ray diffraction data show the presence of silicides. These results illustrated metal silicide formation and a reduction in the thermal reaction barrier for forming refractory metal silicides by ion implantation.     

Open- and Closed-Mindedness and Recognition of Visual Humor

This study investigated the relationship between Open- and Closed–Mindedness and the recognition of visual humor that is based on the introduction of information which conflicts with existing beliefs. Sixty-four Open–and Closed–Minded Ss viewed a humorous picture and identified the humor as quickly as possible. As hypothesized, Closed–Minded Ss took longer to recognize the picture's humor, particularly among males. In addition, it was found that females rated the picture less socially acceptable than did males, regardless of relative Open– or Closed-Mindedness. No differences were obtained for humor ratings of the picture. Differences in receptivity of belief–discrepant information between individuals possessing open and closed belief systems are discussed.     

Latched 3-port waveguide circulators

A ferrite rod-and-tube structure that is suitable for an externally latched circulator has been analysed. The direction of circulation is shown to depend on the relative volumes of the oppositely magnetiscd rod and tube. Some effects of magnetisation are predicted for an ideal geometry.     

A flexible methodology for the characterisation of soils: a case study of the heavy metal status of a site at Dornach

The sampling scheme devised to study the site at Dornach was successful in identifying most of the features and element distributions in the site using only 15 composite samples. The scheme was based on dividing the area into six individual sampling units each of which represented a different combination of land use and soil type. The three-dimensional information was obtained by taking samples at different depths, either on a fixed depth basis for cultivated soils or according to soil horizons for undisturbed soils. In each sampling unit the composite samples were bulked from 12 individual samples. The sampling point for each individual sample was chosen according to a stratified random plan. Key features of the scheme were the flexibility which required the use of experienced personnel and the fact that the sole task of the sampling exercise was to characterise the site with no preconceptions of possible outcomes. The results showed that the high concentrations of Cd in the soil probably resulted from the high concentrations of Cd in the underlying limestone and not primarily from atmospheric inputs. Higher levels of copper were found in soils close to fruit trees probably as a result of using sprays on the trees. The concentrations of Pb and Zn were relatively uniform throughout the site although there was some evidence of increased Zn concentrations with depth analogous to the Cd distributions. The fact that these findings were in agreement with the known characteristics of the site indicates the successful application of the chosen methodology in this study.     

The effect of fast neutron irradiation on the compressive stress-strain relationships of graphite

A study of the effects of fast neutron irradiation on the mechanical properties of polycrystalline graphite is reported. Irradiation to a maximum dose of 1.14 × 10¹⁹ n/cm² at ～ 50°C increased the Young's modulus by 140%. The linearity of the compressive stress-strain curve increased and the hysteresis losses decreased. The fracture stress doubled, whilst the fracture strain decreased by ~24%. Measurements of the total energy absorbed in compression indicated an average increase in the energy required for failure after irradiation. A constant elastic strain to failure criterion was found to be applicable for these irradiation conditions. Upon subsequent thermal annealing the Young's modulus decreased and had almost reached its unirradiated value by 400°C. The fracture stress also decreased towards its unirradiated value and the hysteresis losses increased.     

Channel islands in a reflective ocean: large-scale eventdistribution in heterogeneous networks

We discuss the design of a multicast event distribution service intended to support extremely large-scale event distribution. To date, event notification services have been limited in their scope due to limitations of the infrastructure. At the same time, Internet network and transport layer multicast services have seen limited deployment due to lack of user demand (with the exception of streaming services, e.g., on Sprint's US core network and in the Internet II). Research in active networks and reflective middleware suggests a way to resolve these two problems at one go. The goal of this article is to describe a reflective middleware system that integrates the network, transport, and distributed middleware services into a seamless whole. The system integrates this "low-level" technology into an event middleware system, suitable for telemetry, novel mobile network services, and other as yet unforeseen applications     

Distributed system for educational use

The paper describes how five minicomputers used in undergraduate teaching have been linked with, initially, a ring topology. An operating system kernel providing message primitives, already operational for a single site, has been extended for multisite connections and supports a hierarchy of processes according to the Reference Model for Open Systems Interconnection.In parallel, single-site systems based on procedural and rendezvous primitives are being formulated and extended for a distributed system. The aim of this work is to illustrate concepts and mechanisms in an educational environment.