Why Most Facebook Users Get More Than They Give

Analyzes data on Facebook user activity, including patterns in sending friend requests, adding content, and "liking" their friends' content; the interconnectedness of friends; and links between the number of friends, Facebook activity, and social support

How Has the COVID-19 Pandemic Affected the Way We Access and Interact with the Countryside and the Animals within It?

SIMPLE SUMMARY: In March 2020, the UK entered its first mandatory lockdown to reduce the spread of COVID-19. The restrictions associated with the lockdown led to changes in human behaviour, particularly in relation to exercise and accessing the outdoors. This study used an online survey of UK residents to explore these changes and to understand how people interacted with the natural world while they were outside, including interactions with wildlife and domestic animals. There was an increase in how often respondents went for walks outside during lockdown, compared to pre-lockdown levels, and this increase lasted beyond the end of the first lockdown. Interacting with animals was a common feature of walks. This most commonly involved watching wildlife or domestic animals, such as livestock or horses, but sometimes also involved physically interacting with them and/or feeding them which may have implications for their welfare, for example, if inappropriate food is provided. There is also a risk of humans transferring disease between the animals they have contact with or zoonotic disease transmission between the humans and animals. While is it positive that people are interacting with the natural world, it is important that this does not compromise animal wellbeing. ABSTRACT: There is growing evidence that the changes in human behaviour resulting from the COVID-19 pandemic have had positive and negative impacts on the natural world. This study used an online survey to explore how the first UK lockdown affected human exercising behaviour, with particular focus on the role of wild and domestic animals. The survey was completed by 308 respondents. There was a significant increase in the frequency that respondents went for walks outdoors during lockdown, in comparison to pre-lockdown levels (p ≤ 0.001), and this was sustained (albeit to a lesser extent) once lockdown ended (p = 0.005). Engaging with the natural world was an important feature of walks outside for 81% of respondents. A small proportion of respondents reported physically interacting with the animals they encountered and/or feeding them, which may have implications for their welfare. The findings suggest that those who value animal encounters during their time outside always seek these interactions, while those who do not, did not tend to change this behaviour following lockdown. Should the changes in human exercising behaviour be sustained, it is important to balance the benefits of walking outdoors for human health and wellbeing with the health and welfare of the animals they encounter

A Prototype for the PASS Permanent All Sky Survey

A prototype system for the Permanent All Sky Survey (PASS) project is presented. PASS is a continuous photometric survey of the entire celestial sphere with a high temporal resolution. Its major objectives are the detection of all giant-planet transits (with periods up to some weeks) across stars up to mag 10.5, and to deliver continuously photometry that is useful for the study of any variable stars. The prototype is based on CCD cameras with short focal length optics on a fixed mount. A small dome to house it at Teide Observatory, Tenerife, is currently being constructed. A placement at the antarctic Dome C is also being considered. The prototype will be used for a feasibility study of PASS, to define the best observing strategies, and to perform a detailed characterization of the capabilities and scope of the survey. Afterwards, a first partial sky surveying will be started with it. That first survey may be able to detect transiting planets during its first few hundred hours of operation. It will also deliver a data set around which software modules dealing with the various scientific objectives of PASS will be developed. The PASS project is still in its early phase and teams interested in specific scientific objectives, in providing technical expertise, or in participating with own observations are invited to collaborate.Comment: Accepted for Astronomische Nachrichten (special issue for 3rd Potsdam Thinkshop 'Robotic Astronomy' in July 2004). 4 pages, 4 fig

To Be or Not To Be: Very Young Globular Clusters in M31

We present observations made with the newly commissioned Keck laser-guide star adaptive optics system of 6 objects in M31 that are alleged in multiple recent studies to be young globular clusters (GCs); all are supposed to have ages less than 5 Gyr. The resulting FWHM of the PSF core in our images is ~70 mas. The four youngest of these objects are asterisms; they are with certainty not young GCs in M31. Based on their morphology, the two oldest are GCs in M31. While the M31 GCs with ages 5 -- 8 Gyr appear to be mostly genuine, it appears that many of the alleged very young GCs in M31 are spurious identifications. This problem will be even more severe in studies of the GC systems of more distant spiral galaxies now underway, for which imaging at the spatial resolution of our observations in M31 may not be adequate to detect sample contamination by asterisms.Comment: Accepted to ApJ Letters. A higher resolution version of Figure 1 can be found at: http://www.astro.caltech.edu/~pbc/M31/fig1.p

Intracranial Hemorrhage and Facial Fractures After Nose Blowing and Sternutation: A Case Report

INTRODUCTION: Blowing the nose and sneezing are ubiquitous physiologic processes. While exceedingly rare, traumatic injuries have been described. We detail a case of spontaneous intracranial hemorrhage and orbital fractures sustained as a result of these two phenomena in an otherwise healthy adult without known risk factors for bleeding or intracranial hemorrhage. CASE REPORT: A 79-year-old female presented to the emergency department after blowing her nose with an episode of sneezing following mild epistaxis. She denied any history of trauma, anticoagulation use, bleeding disorders, or pain associated with her symptoms. On examination, she had notable right periorbital swelling. Computed tomography revealed multiple areas of intracranial hemorrhage along with right-sided orbital and zygomatic fractures. After consulting trauma surgery and neurosurgery, we elected to pursue conservative management with repeat imaging. The patient had an uneventful course and was discharged with outpatient follow-up two days later. CONCLUSION: To our knowledge, this is the first case described of this constellation of injuries after a relatively benign process. Despite not having increased risk factors for intracranial hemorrhage (anticoagulation use, history of trauma, history of coagulopathy), this patient had severe injuries that presented with few external symptoms. This case serves as a reminder that while physiologic processes are almost always benign, serious traumatic injuries can result. Clinicians should have a low threshold for advanced imaging when there is a high clinical suspicion of facial fractures or more ominous processes

Ultra-Brief Intervention for Problem Drinkers: Results from a Randomized Controlled Trial

BACKGROUND There are a number of evidence-based, in-person clinical inteventions for problem drinkers, but most problem drinkers will never seek such treatments. Reaching the population of non-treatment seeking problem drinkers will require a different approach. Accordingly, this randomized clinical trial evaluated an intervention that has been validated in clinical settings and then modified into an ultra-brief format suitable for use as an indicated public health intervention (i.e., targeting the population of non-treatment seeking problem drinkers). METHODOLOGY/PRINCIPAL FINDINGS Problem drinkers (N = 1767) completed a baseline population telephone survey and then were randomized to one of three conditions - a personalized feedback pamphlet condition, a control pamphlet condition, or a no intervention control condition. In the week after the baseline survey, households in the two pamphlet conditions were sent their respective interventions by postal mail addressed to 'Check Your Drinking.' Changes in drinking were assessed post intervention at three-month and six-month follow-ups. The follow-up rate was 86% at three-months and 76% at six-months. There was a small effect (p = .04) in one of three outcome variables (reduction in AUDIT-C, a composite measure of quantity and frequency of drinking) observed for the personalized feedback pamphlet compared to the no intervention control. No significant differences (p>.05) between groups were observed for the other two outcome variables - number of drinks consumed in the past seven days and highest number of drinks on one occasion. CONCLUSIONS/SIGNIFICANCE Based on the results of this study, we tentatively conclude that a brief intervention, modified to an ultra-brief, public health format can have a meaningful impact. TRIAL REGISTRATION ClinicalTrials.gov NCT00688584.This study is funded by the National Institute on Alcohol Abuse and Alcoholism (NIAAA), grant #R01 AA015680-01A2. In addition, support to CAMH for salary of scientists and infrastructure has been provided by the Ontario Ministry of Health and Long Term Care

Nutrient management on the Lincoln University dairy farm: "nutrient budgeting for efficient production"

Nutrient management plays an important role in any dairy farming system. Soil fertility status and fertiliser inputs are key drivers of pasture and animal production, whilst fertiliser represents a significant annual cost to the farm. At the same time, intensive agricultural systems also face the challenge of minimising or reducing nutrient loss in order to maintain environmental quality. Therefore 'best practice' may involve nutrient management in terms of balancing production, economic, environmental and efficiency goals. With ever increasing regulation and compliance requirements for the New Zealand farmer, best practice nutrient management will play an increasingly important role in achieving long term sustainability of the farming system. This paper gives an overview of the use of nutrient budgeting as a method of effective and efficient on-farm nutrient management. The paper will focus on nutrient management on the Lincoln University Dairy Farm (LUDF), including soil fertility monitoring and targets, the decision making process and the use of the nutrient budget output. Aspects of environmental research on the LUDF will also be discussed, including the quantification of nitrogen (N) losses, and results from research into nitrogen loss mitigation technology (eco-n nitrification inhibitor)

Our Non-Gaussian Universe: Higher Order Correlation Functions in the Sloan Digital Sky Survey

Modern galaxy surveys, such as the Sloan Digital Sky Survey (SDSS), provide a wealth of information about large scale structure, galaxy evolution and cosmology. Even if initial density fluctuations were extremely Gaussian, gravitational collapse predicts the growth of non-Gaussianities in the galaxy distribution. Higher order clustering statistics, such as the three-point correlation function (3PCF), are necessary to probe the non-Gaussian structure and shape information in these distributions. We measure the clustering of spectroscopic galaxies in the SDSS Main Galaxy Sample, focusing on the shape or configuration dependence of the 3PCF in redshift and projected space. This work constitutes the largest observational dataset ever used to investigate the 3PCF, and the only known projected measurement for SDSS galaxies.The 3PCF exhibits extreme sensitivity to systematic effects such as sky completeness, binning scheme and insufficient error resolution. We show these systematics can dramatically affect our results, which are not consistently accounted for in comparable analyses.We find significant configuration dependence of the 3PCF on intermediate to large scales (3-27 Mpc/h), in agreement with predictions from LCDM and disagreement with the hierarchical ansatz. Below 6 Mpc/h, the redshift space 3PCF shows reduced power and weak configuration dependence in comparison with projected measurements. Our results indicate that redshift distortions, and not galaxy bias, can make the 3PCF appear consistent with the hierarchical ansatz.Compared to the lower order 2PCF, the 3PCF shows a weaker dependence on luminosity with no significant dependence on scales above 9 Mpc/h. On scales less than 9 Mpc/h, the 3PCF shows a greater dependence on color than on luminosity.We conclude that galaxies remain a biased tracer of the mass with a stronger bias associated with greater luminosity. Using a thorough error analysis in the linear regime 9-27 Mpc/h, we show bright galaxies are a biased realization of mass clustering at greater than 4.5 sigma in redshift space and 2.5 sigma in projected space. The strong degeneracy between linear and quadratic bias terms naturally explains the weak luminosity dependence of the 3PCF. Contrary to some claims, we find linear bias is sufficient to explain galaxy-mass bias of our samples

Contextualizing the Young Adult Female Breast Cancer Experience: Developmental, Psychosocial, and Interpersonal Influences

Breast cancer is the most common cancer among American women (American Cancer Society [ACS], 2016b). Adolescents and young adults (AYAs) as a group have a worse prognosis when compared to older adults (e.g., Tichy, Lim, & Anders, 2013). Due to limited understanding of the biology of cancers for AYAs, inadequate representation of AYAs in clinical trials, and AYAs’ unique psychosocial healthcare needs, the prognosis for this group, as compared to older women, is comparatively poor. One step in addressing the survival gap for AYAs is to explore the developmental and psychosocial factors that shape their illness experiences. This qualitative study explored the illness experiences of women diagnosed with breast cancer between the ages of 18 and 39 years old. Using a phenomenological approach, 23 breast cancer survivors were interviewed using a semi-structured interview. Findings indicated the centrality of developmental, sociocultural, and psychosocial systems in shaping women\u27s health care experiences. Future studies should explore the ways in which medical providers attend to these systems across the breast cancer trajectory