Magnetic-field dependence of nucleation undercoolings in non-magnetic metallic melts

The nucleation undercoolings of non-magnetic metals like paramagnetic aluminium in high magnetic fields were measured by the differential thermal analysis technique. It was shown that the nucleation undercooling of pure aluminium increased with increasing the magnetic field, while its melting temperature was hardly changed. Based on the model of magnetic dipoles at the interface, it is proposed that the magnetic-field-induced interfacial energy mainly contributes to the increase in undercooling. The change in undercooling in the magnetic field is calculated theoretically, which is in comparison with experimental data. Additionally, the inhibition of atom diffusion in the magnetic field plays a role in the change of undercooling.     

Conscious and unconscious processing of facial expressions: Evidence from two split‐brain patients

We investigated how the brain's hemispheres process explicit and implicit facial expressions in two ‘split‐brain’ patients (one with a complete and one with a partial anterior resection). Photographs of faces expressing positive, negative or neutral emotions were shown either centrally or bilaterally. The task consisted in judging the friendliness of each person in the photographs. Half of the photograph stimuli were ‘hybrid faces’, that is an amalgamation of filtered images which contained emotional information only in the low range of spatial frequency, blended to a neutral expression of the same individual in the rest of the spatial frequencies. The other half of the images contained unfiltered faces. With the hybrid faces the patients and a matched control group were more influenced in their social judgements by the emotional expression of the face shown in the left visual field (LVF). When the expressions were shown explicitly, that is without filtering, the control group and the partially callosotomized patient based their judgement on the face shown in the LVF, whereas the complete split‐brain patient based his ratings mainly on the face presented in the right visual field. We conclude that the processing of implicit emotions does not require the integrity of callosal fibres and can take place within subcortical routes lateralized in the right hemisphere.     

Division by zero in non-involutive meadows

Meadows have been proposed as alternatives for fields with a purely equational axiomatization. At the basis of meadows lies the decision to make the multiplicative inverse operation total by imposing that the multiplicative inverse of zero is zero. Thus, the multiplicative inverse operation of a meadow is an involution. In this paper, we study ‘non-involutive meadows’, i.e. variants of meadows in which the multiplicative inverse of zero is not zero, and pay special attention to non-involutive meadows in which the multiplicative inverse of zero is one.     

Why study cognition in the wild (and how to test it)?

An animal's behavior is affected by its cognitive abilities, which are, in turn, a consequence of the environment in which an animal has evolved and developed. Although behavioral ecologists have been studying animals in their natural environment for several decades, over much the same period animal cognition has been studied almost exclusively in the laboratory. Traditionally, the study of animal cognition has been based on well‐established paradigms used to investigate well‐defined cognitive processes. This allows identification of what animals can do, but may not, however, always reflect what animals actually do in the wild. As both ecologists and some psychologists increasingly try to explain behaviors observable only in wild animals, we review the different motivations and methodologies used to study cognition in the wild and identify some of the challenges that accompany the combination of a naturalistic approach together with typical psychological testing paradigms. We think that studying animal cognition in the wild is likely to be most productive when the questions addressed correspond to the species’ ecology and when laboratory cognitive tests are appropriately adapted for use in the field. Furthermore, recent methodological and technological advances will likely allow significant expansion of the species and questions that can be addressed in the wild.     

Medical psychotherapy consultation: psychoanalytic psychiatry for the patient and professional

An NHS Mental Health Trust Medical Psychotherapy Consultation Service using psychoanalytic psychiatry to help the patient and professional is described. The Consultation Service established in 2000 is offered to secondary acute and community mental health teams and primary care. The service was evaluated as a basis for regional and national development. Between 2006 and 2013, 87 consultations from 210 were sampled to ascertain demographic and diagnostic profiles and outcomes of the consultation process. We conducted an online survey of local consultant psychiatrists’ views about the service, and undertook a thematic analysis of the free text comments. We also conducted a survey of members of the Royal College of Psychiatrists’ Medical Psychotherapy Faculty to ascertain whether similar consultation services existed elsewhere in the UK and had been evaluated. The Leeds model of psychoanalytic consultation – a ‘consultation sandwich’ – is described. From a psychoanalytic perspective, the work of consultation is seen as an extension of the dynamic field of the analytic situation. This paper develops the concept of a bastion – an omnipotent reserve in and between the patient and professional derived from adhesive identifications leading to stuck relationships. The adhesive identification in the patient and professional acts like a ‘grievance glue’ – a mutual manifestation in a last bastion of painful limitations not faced, losses not grieved.     

A personal commentary on J.W. Perry,M.D., and introduction to ‘Reconstitutive process in the psychopathology of the Self’

John Weir Perry’s influence on the understanding of the psychotic process through his research in San Francisco between 1950 and 1981 was groundbreaking, because it both verified and expanded upon C.G. Jung’s research at the Burghölzli Hospital in Switzerland in the early 1900’s. The author explores both the brilliance of Perry’s contribution as a psychiatrist and Jungian analyst and also shows the flawed human, who, with his rare sensitivity to the psychotic process, devoted his life work to the schizophrenic population and their often ill-fated search for meaning. She tells how his creative engagement with the analytic processes of Self discovery eventually led to analytic boundary violations, which ultimately resulted in his indefinite suspension from membership in his local Jungian community. Further, this paper describes her reflections on the innovative work that influenced both the treatment of this population, as well as educating candidates in analytical training to be receptive to and cognizant of psychotic affects and imagery. The archetypal field of the psychotic process, its influence on the development of analytical psychology relative to the psychotic process, and one man’s impact on the analytic community are considered.     

The technologically-mediated self: reflections on the container and field of telecommunications

This paper contains reflections on the use of the imagination in technologically-mediated therapy and analysis. As part of the individuation process the psyche is seen as needing to adapt to new technological ways of communicating. The notion of a technologically-mediated self is posited describing a self which can only be apprehended through, and by, the use of telecommunications. This self is seen as identical to the in-person self, a subset, or superset of it. There is a revisioning of our notions of the container and the field in this work performed through technological-mediation. The need to engage the imagination in approaching this kind of work is emphasized in order to create an imaginal play-space in which the body will be deeply affected. Some thoughts on how the process of individuation might look through such analytic work is presented.     

Elastic solutions with arbitrary elastic inhomogeneity and anisotropy

An efficient numerical algorithm is proposed to accurately compute the elastic fields in two-dimensional (2D) or three-dimensional (3D) microstructures with arbitrary elastic inhomogeneity and anisotropy. It combines the equivalent inclusion method of Eshelby, the microelasticity theory of Khachaturyan, and the spectral iterative perturbation method of Hu and Chen. Its efficiency is compared with those of existing approaches in the literature. The method can be conveniently implemented in phase-field modeling of stress-dependent microstructure evolution and/or of mass/electrical transport.     

A study of the spin-Hamiltonian parameters for Cr5+ at the rhombically-distorted tetrahedral P5+ site of Ca2PO4Cl crystal using a two-mechanism model

The complete high-order perturbation formulae of spin-Hamiltonian (SH) parameters (g factors g_i and hyperfine structure constants A_i , where i = x, y, z) containing contributions from both the crystal-field (CF) and charge-transfer (CT) mechanisms (the latter mechanism is neglected in the widely-used CF theory) are established for d¹ ions in rhombic tetrahedra. From these formulae, the SH parameters of Cr⁵⁺ ion at the rhombically-distorted tetrahedral P⁵⁺ site of Ca₂PO₄Cl crystal are calculated. The CF and CT energy levels used in the calculation are obtained from the optical spectra of the studied Ca₂PO₄Cl : Cr⁵⁺ crystal. The calculated results showed reasonable agreement with the experimental values. The signs of the hyperfine structure constants A_i and the relative importance of the CT mechanism to SH parameters are acquired from the calculations.