Revisiting vocal perception in non-human animals: a review of vowel discrimination, speaker voice recognition, and speaker normalization

Article / Letter to editorInstituut Biologie LeidenInstituut Biologie Leide

Food cost and availability in a rural setting in Australia

Introduction: The burden of chronic diseases is rapidly increasing worldwide. In&nbsp; Australia rural populations have a greater burden of disease. Chronic diseases are largely preventable with diet as a key risk factor. With respect to diet-related chronic disease, dietary risk may be due to poor food access, namely, poor availability and/or the high cost of healthy food. It is likely that poor food access is an issue in rural areas. Objective: To assess food access in rural south-west (SW) Victoria, Australia.Methods: A total of 53 supermarkets and grocery stores in 42 towns participated in a survey of food cost and availability in the rural area of SW Victoria. The survey assessed availability and cost of a Healthy Food Access Basket (HFAB) which was designed to meet the nutritional needs of a family of 6 for 2 weeks.Results: Seventy-two percent of the eligible shops in SW Victoria were surveyed. The study found that the complete HFAB was significantly more likely to be available in a town with a chain-owned store (p&lt;0.00). The complete HFAB was less likely to be available from an independently owned store in a town with only one grocery shop (p&lt;0.004). The average cost of the HFAB across SW Victoria was AU380.30 ± 25.10 (mean &plusmn; SD). There was a mean range in difference of cost of the HFAB of $36.92. In particular, high variability was found in the cost of fruits and vegetables.Conclusions: Cost and availability of healthy food may be compromised in rural areas. Implications: Improvements in food access in rural areas could reduce the high burden of disease suffered by rural communities.<br /

Preliminary evaluation of spectral, normal and meteorological crop stage estimation approaches

Several of the projects in the AgRISTARS program require crop phenology information, including classification, acreage and yield estimation, and detection of episodal events. This study evaluates several crop calendar estimation techniques for their potential use in the program. The techniques, although generic in approach, were developed and tested on spring wheat data collected in 1978. There are three basic approaches to crop stage estimation: historical averages for an area (normal crop calendars), agrometeorological modeling of known crop-weather relationships agrometeorological (agromet) crop calendars, and interpretation of spectral signatures (spectral crop calendars). In all, 10 combinations of planting and biostage estimation models were evaluated. Dates of stage occurrence are estimated with biases between -4 and +4 days while root mean square errors range from 10 to 15 days. Results are inconclusive as to the superiority of any of the models and further evaluation of the models with the 1979 data set is recommended

17. Increase in Social Media Use to Support Increased Meal Preparation by College Students during the COVID-19 Experience

Background The COVID-19 pandemic has resulted in higher education institutions transitioning to online course delivery and limiting on-campus activities. With decreasing access to campus food service and restaurants, college students with limited cooking experience are now reliant on home-prepared meals. Purpose The purpose of this study was to explore cooking skills and social media use for meal preparation in college students during the COVID-19 experience. Method This cross-sectional descriptive study utilized an online survey with U.S. college students early in the Covid-19 pandemic. The subset of questionnaire items used for this study included demographic, social media use, and cooking and shopping behaviors items. Results Nearly 30% of the college student respondents (N=282) self-identified as the primary person responsible for preparing meals in their homes, while 40% had shared responsibility. Over 50% of the respondents reported increasing meal preparation activities during the quarantine. At the same time, 64% increased their use of social media for researching food preparation techniques and recipe ideas. Sixty-two percent described having “good” grocery shopping skills, while only 51% described their cooking skills as “good”. Conclusions There is an identified need for providing food preparation and shopping skills education to support college students’ ability to manage and adapt during disruptive times

The combined role of distance and frequency travel restrictions on spread of disease

Travel restrictions have often been used as a measure to combat the spread of disease -- in particular, they have been extensively applied in 2020 against coronavirus disease 2019 (COVID-19). How to best restrict travel, however, is unclear. Most studies and policies simply constrain the distance r individuals may travel from their home or neighbourhood. However, the epidemic risk is related not only to distance travelled, but also to frequency of contacts, which is proxied by the frequency f with which individuals revisit locations over a given reference period. Inspired by recent literature that uncovers a clear universality pattern on how r and f interact in routine human mobility, this paper addresses the following question: does this universal relation between r and f carry over to epidemic spreading, so that the risk associated with human movement can be modeled by a single, unifying variable r * f? To answer this question, we use two large-scale datasets of individual human mobility to simulate disease spread. Results show that a universal relation between r and f indeed exists in the context of epidemic spread: in both of the datasets, the final size and the spatial distribution of the infected population depends on the product r * f more directly than on the individual values of r and f. The important implication here is that restricting r (where you can go), but not f (how frequently), could be unproductive: high frequency trips to nearby locations can be as dangerous for disease spread as low frequency trips to distant locations. This counter-intuitive discovery could explain the modest effectiveness of distance-based travel restrictions and could inform future policies on COVID-19 and other epidemics.Comment: 8 pages, 7 figure

Wie viele Tempora hat das Deutsche?

This contribution deals with the question of how many tenses exist in the German language. Answers to this question range from a minimum of one up to no less than about thirteen, but the main problem is, what exactly has to be counted. One has to distinguish between tense forms and temporal functions, and standard German has about 6 forms and 6 functions. Almost every form expresses more than one function, so that about 12 pairs of form and function may be found. Such overlap is not necessary, because speakers can avoid using two forms for one function. However, since this situation is not excluded in principle, we have to accept a certain redundancy in the German tense system

Selection of chromosomal DNA libraries using a multiplex CRISPR system.

The directed evolution of biomolecules to improve or change their activity is central to many engineering and synthetic biology efforts. However, selecting improved variants from gene libraries in living cells requires plasmid expression systems that suffer from variable copy number effects, or the use of complex marker-dependent chromosomal integration strategies. We developed quantitative gene assembly and DNA library insertion into the Saccharomyces cerevisiae genome by optimizing an efficient single-step and marker-free genome editing system using CRISPR-Cas9. With this Multiplex CRISPR (CRISPRm) system, we selected an improved cellobiose utilization pathway in diploid yeast in a single round of mutagenesis and selection, which increased cellobiose fermentation rates by over 10-fold. Mutations recovered in the best cellodextrin transporters reveal synergy between substrate binding and transporter dynamics, and demonstrate the power of CRISPRm to accelerate selection experiments and discoveries of the molecular determinants that enhance biomolecule function

Panel One: Information Issues: Intellectual Property, Privacy, Integrity, Interoperability, and the Economics of Information

The first panel of From Conduit to Content: The Emergence of Information Policy and Law examines the wide range of legal and regulatory issues presented by information, including intellectual property, privacy, free expression, liability for false or damaging expression, interoperability, international trade, antitrust, and government investment in and provision of information. Participants include Anne W. Branscomb, Fred H. Cate, Brian Kahin, Ellen M. Kirsh, and P. Michael Nugent. From Conduit to Content: The Emergence of Information Policy and Law. The Annenberg Washington Program. Friday, March 3 1995, Washington, D.C

Panel One: Information Issues: Intellectual Property, Privacy, Integrity, Interoperability, and the Economics of Information

The first panel of From Conduit to Content: The Emergence of Information Policy and Law examines the wide range of legal and regulatory issues presented by information, including intellectual property, privacy, free expression, liability for false or damaging expression, interoperability, international trade, antitrust, and government investment in and provision of information. Participants include Anne W. Branscomb, Fred H. Cate, Brian Kahin, Ellen M. Kirsh, and P. Michael Nugent. From Conduit to Content: The Emergence of Information Policy and Law. The Annenberg Washington Program. Friday, March 3 1995, Washington, D.C

Measurement invariance of the Positive Gains Scale in families of children with and without disabilities

Aims The present study sought to establish measurement invariance for the Positive Gains Scale (PGS) across 1219 mothers of children with developmental disabilities, 234 mothers of children with spina bifida/hydrocephalus, and 157 mothers of children without disabilities. Methods and procedures A three-step test for measurement invariance across the three groups was conducted using Multigroup Confirmatory Factor Analysis. Outcomes and results Loadings between the three groups were invariant, suggesting the criteria to assume metric invariance was met. However, the assumption of scalar invariance was not met, suggesting that item intercepts differed between the three groups. Conclusions and implications Our findings suggest that the PGS cannot be meaningfully used to compare outcomes between mothers of children with developmental disabilities and other mothers. These findings may have wider implications for research utilising well-being measures to make comparisons with carers of children with developmental disabilities