131,333 research outputs found
Letter to D. N. Parfitt
No full textWinnicott’s letter to Dr Parfitt agreeing with him on cases of anorexia and opposing this to the view of William Sargant, for whom almost everything, Winnicott suggests, is seen as an illness. Winnicott writes that anorexia, like enuresis, is not an illness unless someone takes the very severe cases and gives them a label. He argues for dynamic psychology being used in cases that involve anorexia.</p
Courtship and mating behavior of Megastigmus pinus Parfitt (Hymenoptera: Torymidae)
No full textThe courtship and mating behavior of <i>Megastigmus pinus</i> Parfitt was observed in insect cages and under a dissecting microscope in petri dishes. Courtship had 6 components: a premounting rocking performance by the male; mounting by the male to a dorsal riding position on the female; antennation and abdominal and wing movement by the male; a series of forward lurches by the male; signaling of receptivity by the female, and subsequent movement of the male to position for copulation. The average durations of mounting and copulation were 6.76 min and 23.5 sec, respectively. Short courtship and copulation times may reduce the risk of predation
Li–ion diffusion on the surface of Ti3C2-T (T=O, S, F, Cl, Br) MXene
No full textK. A. Papadopoulou, D. Parfitt, A. Chroneos and S.-R. G. Christopoulos, “Li–ion diffusion on the surface of Ti3C2-T (T=O, S, F, Cl, Br) MXene”, European Materials Research Society Spring 2022 meeting, 30 May-3 June 2022, onlin
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Cyclic plasticity and damage mechanisms of Ti-6Al-4V processed by electron beam melting
No full textCyclic deformation and damage mechanisms in electron-beam-melted Ti-6Al-4V are investigated. As-built samples exhibit a graded microstructure over the height of 120 mm, with samples from the top having larger α-laths and higher plastic strain. After HIPing, the α-lath width is greater, with reduced grain misorientation, and lower microstructural and property gradients. In both conditions, the observed cyclic softening is dominated by a monotonic reduction in the friction stress and an increase in grain misorientation, suggesting the lath structure progressively fragments into smaller grains. As-built samples show typically lower fatigue life due to crack initiation from gas pores and lack-of-fusion defects.</p
Fig. 7. A–C in Four new species of Hydnellum (Thelephorales, Basidiomycota) with a note on Sarcodon illudens
No full textFig. 7. A–C. Hydnellum roseoviolaceum, holotype, GB-0195936, photos B. Pettersson. D. H. roseoviolaceum type locality, photo B. Pettersson. E. H. fuligineoviolaceum TU106391 (UDB011895), photo V. Liiv. F. H. fuligineoviolaceum GB-0195817.Published as part of Nitare, J., Ainsworth, A.M., Larsson, E., Parfitt, D., Suz, L.M., Svantesson, S. & Larsson, K.-H., 2021, Four new species of Hydnellum (Thelephorales, Basidiomycota) with a note on Sarcodon illudens, pp. 233-254 in Fungal Systematics and Evolution 7 (1) on page 249, DOI: 10.3114/fuse.2021.07.12, http://zenodo.org/record/583883
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Fig. 9. Hydnellum basidiospores. A. H in Four new species of Hydnellum (Thelephorales, Basidiomycota) with a note on Sarcodon illudens
No full textFig. 9. Hydnellum basidiospores. A. H. fagiscabrosum (holotype, GB-0195805). B. H. glaucopus (GB-0195722). C. H. illudens (GB-0195937). D. H. lepidum (GB-129373). E. H. nemorosum (O-F-242352). F. H. roseoviolaceum (holotype. GB-0195936). G. H. scabrosellum (holotype, GB-0195689). H. H. scabrosum (GB-0195731). Scale bar = 5 µm.Published as part of Nitare, J., Ainsworth, A.M., Larsson, E., Parfitt, D., Suz, L.M., Svantesson, S. & Larsson, K.-H., 2021, Four new species of Hydnellum (Thelephorales, Basidiomycota) with a note on Sarcodon illudens, pp. 233-254 in Fungal Systematics and Evolution 7 (1) on page 251, DOI: 10.3114/fuse.2021.07.12, http://zenodo.org/record/583883
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