60 research outputs found
Formation and Evaporation of a Naked Singularity in 2D Gravity
We describe a classical configuration of conformal matter forming a naked
singularity and discuss its subsequent Hawking evaporation within the context
of two dimensional dilaton gravity. The one loop analysis is credible for a
large mass naked singularity and suggests the existence of a weak cosmological
censorship that would cause it to explode into radiation upon forming.
(Hardcopies of figures available on request)Comment: 10 pages, PHYZZX, preprint UATP-93/0
Hartree Fock Calculations in the Density Matrix Expansion Approach
The density matrix expansion is used to derive a local energy density
functional for finite range interactions with a realistic meson exchange
structure. Exchange contributions are treated in a local momentum
approximation. A generalized Slater approximation is used for the density
matrix where an effective local Fermi momentum is chosen such that the next to
leading order off-diagonal term is canceled. Hartree-Fock equations are derived
incorporating the momentum structure of the underlying finite range
interaction. For applications a density dependent effective interaction is
determined from a G-matrix which is renormalized such that the saturation
properties of symmetric nuclear matter are reproduced. Intending applications
to systems far off stability special attention is paid to the low density
regime and asymmetric nuclear matter. Results are compared to predictions
obtained from Skyrme interactions. The ground state properties of stable nuclei
are well reproduced without further adjustments of parameters. The potential of
the approach is further exemplified in calculations for A=100...140 tin
isotopes. Rather extended neutron skins are found beyond 130Sn corresponding to
solid layers of neutron matter surrounding a core of normal composition.Comment: Revtex, 29 pages including 14 eps figures, using epsfig.st
Cognitive and Psychological Reactions of the General Population Three Months After the 2011 Tohoku Earthquake and Tsunami
BACKGROUND: The largest earthquake on record in Japan (magnitude 9.0) occurred on March 11, 2011, and the subsequent tsunami devastated the Pacific coast of Northern Japan. These further triggered the Fukushima I nuclear power plant accidents. Such a hugely complex disaster inevitably has negative psychological effects on general populations as well as on the direct victims. While previous disaster studies enrolled descriptive approaches focusing on direct victims, the structure of the psychological adjustment process of people from the general population has remained uncertain. The current study attempted to establish a path model that sufficiently reflects the early psychological adaptation process of the general population to large-scale natural disasters. METHODS AND FINDINGS: Participants from the primary disaster area (n = 1083) and other areas (n = 2372) voluntarily participated in an online questionnaire study. By constructing path models using a structural equation model procedure (SEM), we examined the structural relationship among psychological constructs known related to disasters. As post-traumatic stress symptoms (PTS) were significantly more present in people in the primarily affected area than in those in secondary- or non-affected areas, the path models were constructed for the primary victims. The parsimoniously depicted model with the best fit was achieved for the psychological-adjustment centered model with quality of life (QoL) as a final outcome. CONCLUSION: The paths to QoL via negative routes (from negative cognitive appraisal, PTS, and general stress) were dominant, suggesting the importance of clinical intervention for reducing negative cognitive appraisal, and for caring for general stress and PTS to maintain QoL at an early stage of psychological adaptation to a disaster. The model also depicted the presence of a positive route where positive cognitive appraisal facilitates post-traumatic growth (PTG) to achieve a higher QoL, suggesting the potential importance of positive psychological preventive care for unexpected natural disasters
Report of the 15th International Family Nursing Conference (In Virtual Format): Family Nursing Throughout the Life-Course June 23–July 2, 2021
La race hébérite et ses peuples au point de vue anthropologique, psychologique et historique
TRAINING ALLIES TO REDUCE VARIANCE IN A NURSING HOME STUDY: A COMMUNICATION INTERVENTION
Communication training was undertaken within a study the prime purpose of which is to determine the influence of light levels on rhythms and patterns of wandering behavior in a nursing home sample of cognitively impaired individuals. The purpose of this training was to control variance in the social environment of an experimental lounge since it is posited that a number of environmental influences may impact wandering. Heron six-category intervention analysis (Heron, 1976) was used to interpret the existing social environment and inform ally training. This article outlines ally training methods, introduces training implementation issues and evaluates training outcomes.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/50399/1/400_ftp.pd
The Emergence of a New Discourse for Business Communication, ‘A Case Study of e-mails in Shipping Company’
HPLC separation of hesperidin and the C-2 epimer in commercial hesperidin samples and herbal medicines
Copolythiophene-based water-gated organic field-effect transistors for biosensing
This paper reports on the sensing of proteins using water-gated organic field-effect transistors. As a proof-of-concept, streptavidin and avidin were used, with a biotinylated polymer as the active sensing material. The latter is a copolythiophene modified to graft biotin by peptidic coupling. After characterization of its structure, it was integrated as the channel material into transistors and its interactions with several proteins were investigated. Non-specific interactions were reduced when the polymer surface was pretreated with 1-octanol. In this case, human serum albumin had no effect on the transistor characteristics whereas avidin and streptavidin led to a decrease of the drain current. <img src="http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=C3TB00525A" /
- …