2,025 research outputs found
F(750), We Miss You as a Bound State of 6 Top and 6 Antitop Quarks, Multiple Point Principle
We review our speculation, that in the pure Standard Model the exchange of
Higgses, including also the ones "eaten by and Z", and of gluons
together make a bound state of 6 top plus 6 anti top quarks bind so strongly
that its mass gets down to about 1/3 of the mass of the collective mass 12
of the 12 constituent quarks. The true importance of this speculated
bound state is that it makes it possible to uphold, even inside the Standard
Mode, our proposal for what is really a new law of nature saying that there are
several phases of empty space, vacua, all having very small energy densities
(of the order of the present energy density in the universe). The reason
suggested for believing in this new law called the "Multiple (Criticality)
Point Principle" is, that estimating the mass of the speculated bound state
using the "Multiple Point Principle" leads to two consistent mass-values; and
they even agree with a crude bag-model like estimate of the mass of this bound
state. Very, unfortunately, the statistical fluctuation so popular last year,
when interpreted as the digamma resonance F(750), turned out not to be a real
resonance, because our estimated bound state mass is just around the mass of
750 GeV.Comment: 25 pages, 11 figures, Corfu Summer Institute 2016 "School and
Workshops on Elementary Particle Physics and Gravity", 31 August - 23
September, 2016, Corfu, Greec
Contribución al conocimiento de la anapaita de la Cerdanya
Se estudian mineralógicamente los fosfatos miocénicos de Bellver de la Cerdanya (Lérida). Para ello, se emplean las técnicas siguientes: difracción de rayos X, espectroscopia de emisión y absorción de infrarrojos.Mediante el estudio roentgenológico determinamos que la especie mineral en estudio es la Anapaita (FeCa2(P04)2.4H2O). La espectroscopia de emisión confirma, por una parte, la existencia de los elementos constituyentes de la fórmula química: P, Ca y Fe con líneas bien marcadas y, por otra parte, la presencia de Mn, Al, Si, Mg, Na y Cu como contaminantes.Finalmente, el estudio del espectro de absorción de rayos infrarrojos detecta el grupo fosfato, básico, y la presencia de agua de absorción
Contribución al conocimiento de la anapaita de la Cerdanya
Se estudian mineralógicamente los fosfatos miocénicos de Bellver de la Cerdanya (Lérida). Para ello, se emplean las técnicas siguientes: difracción de rayos X, espectroscopia de emisión y absorción de infrarrojos.Mediante el estudio roentgenológico determinamos que la especie mineral en estudio es la Anapaita (FeCa2(P04)2.4H2O). La espectroscopia de emisión confirma, por una parte, la existencia de los elementos constituyentes de la fórmula química: P, Ca y Fe con líneas bien marcadas y, por otra parte, la presencia de Mn, Al, Si, Mg, Na y Cu como contaminantes.Finalmente, el estudio del espectro de absorción de rayos infrarrojos detecta el grupo fosfato, básico, y la presencia de agua de absorción
Experiments on clinical observation and judgement in the assessment of depression: profiled videotapes and Judgement Analysis
Variations within and between observer-judges reduce the accuracy of clinical research. Judgement Analysis allows strategies to be developed and applied which reduce variation in judgement. The prediction that the removal of important sources of error variance by this means would reduce the likelihood of committing a Type 2 Error was supported by the application of Judgement Analysis to assessments by 15 psychiatrists of 92 patients in a clinical trial of 2 antidepressive treatments. The statistical significance of differences between the effect of the treatments on the severity of depression was increased, and significant differences appeared earlier. Ten stimulated patient profiles were also converted into narrative case histories, enacted by experienced psychiatrists or psychologists and videotaped. The participants' judgements of the overall severity of the depression were in good agreement with those they had made on the original cases. Videotapes so prepared help training to reduce variation in observation, just as Judgement Analysis can lead to reductions in the variation of judgemen
Collective action for the conservation of on-farm genetic diversity in a center of crop diversity: an assessment of the role of traditional farmers' networks
"This project explored the possible role of collective action among small-scale farmers in managing and maintaining genetic resources in a center of crop diversity. It focused on the local institutions that ensure the supply of seed of diverse maize landraces to small-scale farmers in the Central Valleys of Oaxaca, Mexico. The key hypothesis was that the medium-to-long-term supply of a diverse set of varieties to any individual small-scale maize farmer depends on an agreement among a group of farmers to manage and supply the seed of these landraces to each other, if the need arises, and that this constitutes a form of collective action. Six communities were studied, three of them in-depth. Methodologies used included in-depth semi-structured interviews with key informants, focus group discussions, and a tracer study—following the flows of seed among different farmers. The results show that, while there is a well-developed local seed supply system based on sets of social relationships and involving multiple types of transactions, there is no evidence of collective action. Most farmers rely on and prefer to select and save seed from their own harvests. There are seed flows, however, and most seed transactions take place among people with social links, but not within a well-defined group. There are no specialized suppliers of seed, either individuals or groups. Most transactions are bilateral and while the most common transaction is the sale and purchase of seed, this is not done for profit but out of a sense of moral obligation. The system is based on the creation of trust, which is needed because seed is not transparent—that is, it is not possible to fully predict the plant phenotype that may result from a given seed simply by looking at the seed. Farmers demand different types of maize and they believe that there is a strong genotype-by-environment interaction, hence “foreign” maize types may not be appropriate for them. At the same time, farmers also find occasional experimentation beneficial and believe that they can slowly modify the characteristics of “foreign” landraces. In this system, there are strong incentives to be conservative, but also to try new landraces and experiment. The local seed system of these farmers is resilient but able to innovate as well. Interventions to support the conservation of landraces on farm, based on specialized networks for seed that rely on collective action, may not work.." Author's AbstractCentral America, Europe and North America, Small farmers, Collective action, Informal seed systems, Crop diversification, Seed supply, Trust,
Super-resolution x-ray phase-contrast and dark-field imaging with a single 2D grating and electromagnetic source stepping
Here we report a method for increased resolution of single exposure three modality x-ray images using super-resolution. The three x-ray image modalities are absorption-, differential phase-contrast-, and dark-field-images. To create super-resolution, a non-mechanically movable micro-focus x-ray source is used. A series of almost identical x-ray projection images is obtained while the point source is translated in a two-dimensional grid pattern. The three image modalities are extracted from fourier space using spatial harmonic analysis, also known as the single-shot method. Using super-resolution on the low-resolution series of the three modalities separately results in high-resolution images for the modalities. This approach allows to compensate for the inherent loss in resolution caused by the single-shot method without increasing the need for stability or algorithms accounting for possible motion
Quality of life and well-being of carers of people with dementia: are there differences between working and nonworking carers? Results from the IDEAL program
The aim of this study was to identify the differences in quality of life (QoL) and well-being between working and nonworking dementia carers and the relative contribution of psychological characteristics, caregiving experience, and social support. Multiple regressions modeled the contribution of working status, caregiver experiences, and psychological and social resources to carer QoL (EQ-5D) and well-being (WHO-5). After controlling for age, gender, carer–dyad relationship, and severity of dementia, working status contributed significant variance to EQ-5D (2%) but not to WHO-5 scores. Independent of working status, higher self-esteem and reduced stress contributed to variance in both models. Self-efficacy, social support, and positive perceptions of caregiving additionally contributed to higher WHO-5 scores. Working status associated with higher EQ-5D QoL; this may reflect the sustained sense of independence associated with supported work opportunities for carers. Outside of working status, the findings support the importance of psychological and social factors as targets to improved mental health for dementia carers
Systemic family therapy for severe functional disorders in youths. A qualitative study in a psychiatric setting
This is the pre-peer reviewed version of the following article: Hulgaard, D.R., Risør, M.B., Lambertsen, G.D. and Rask, C.U. (2021). Systemic family therapy for severe functional disorders in youths: a qualitative study in a psychiatric setting. Journal of Family Therapy, 43, 558-575, which has been published in final form at https://doi.org/10.1111/1467-6427.12319. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.This study aimed to explore participant experiences of systemic family therapy for youths with functional disorders. After completing family therapy, eight youths and thirteen parents participated in qualitative interviews. The analysis was based on interpretative phenomenological analysis and identified two main themes. The first theme was: ‘Challenges of creating meaning and understanding of child symptoms in family therapy’, with symptom understanding and explanation found to be important, though sometimes challenging, themes in therapy. The second theme was: ‘Clinical encounters in family therapy promote dialogue’, which included the finding that the family therapy setting with joint sessions for family members facilitated in-family communicatio
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