We report the first observation of the Dorantes longtail, Thorybes dorantes (Stoll, 1790) (Lepidoptera: Hesperiidae), in Canada. On 16 April 2023, a single adult was observed on the northwest shore of Lake Ontario, in Toronto, Ontario, Canada. The observation represents a 1500- to 2000-km disjunction from the species’ nearest known populations in North America. After considering several scenarios that could explain the occurrence of the Dorantes longtail in Canada, the most likely explanation is that the observed individual came in on produce through the Ontario Food Terminal, Etobicoke, Ontario, providing another example of the constant pressure of species introductions to the region.

Three-dimensional (3D) food printing is a rapidly emerging technology offering unprecedented potential for customised food design and personalised nutrition. Here, we evaluate the technological advances in extrusion-based 3D food printing and its possibilities to promote healthy and sustainable eating. We consider the challenges in implementing the technology in real-world applications. We propose viable applications for 3D food printing in health care, health promotion and food waste upcycling. Finally, we outline future work on 3D food printing in food safety, acceptability and economics, ethics and regulations.

South Africa has embarked on major health policy reform to deliver universal health coverage through the establishment of National Health Insurance (NHI). The aim is to improve access, remove financial barriers to care, and enhance care quality. Health technology assessment (HTA) is explicitly identified in the proposed NHI legislation and will have a prominent role in informing decisions about adoption and access to health interventions and technologies. The specific arrangements and approach to HTA in support of this legislation are yet to be determined. Although there is currently no formal national HTA institution in South Africa, there are several processes in both the public and private healthcare sectors that use elements of HTA to varying extents to inform access and resource allocation decisions. Institutions performing HTAs or related activities in South Africa include the National and Provincial Departments of Health, National Treasury, National Health Laboratory Service, Council for Medical Schemes, medical scheme administrators, managed care organizations, academic or research institutions, clinical societies and associations, pharmaceutical and devices companies, private consultancies, and private sector hospital groups. Existing fragmented HTA processes should coordinate and conform to a standardized, fit-for-purpose process and structure that can usefully inform priority setting under NHI and for other decision makers. This transformation will require comprehensive and inclusive planning with dedicated funding and regulation, and provision of strong oversight mechanisms and leadership.

Despite its global importance and the recognition of dementia as an international public health priority, interventions to reduce stigma of dementia are a relatively new and emerging field. The purpose of this review was to synthesize the existing literature and identify key components of interventions to reduce stigma of dementia. We followed Arksey and O’Malley’s scoping review process to examine peer-reviewed literature of interventions to reduce dementia-related stigma. A stigma-reduction framework was used for classifying the interventions: education (dispel myths with facts), contact (interact with people with dementia), mixed (education and contact), and protest (challenge negative attitudes). From the initial 732 references, 21 studies were identified for inclusion. We found a variety of education, contact, and mixed interventions ranging from culturally tailored films to intergenerational choirs. Findings from our review can inform the development of interventions to support policies, programs, and practices to reduce stigma and improve the quality of life for people with dementia.

This research note reports on a new effort to track candidate diversity in Canadian elections. The dataset covers 4,516 candidates who ran in the 2008, 2011, 2015 and 2019 federal elections and includes novel data on their race, Indigenous background and age, alongside information on gender, occupation, prior electoral experience and electoral outcome. We outline the process for collecting and systematizing these data, which relied on genealogical methods and the principle of triangulation. The data can be used to track diversity among electoral candidates over time or merged with other sources to answer district-level questions about representational diversity, electoral dynamics, vote choice and political communications. The method could also be replicated and applied to other levels of government.

In premodern economic systems where the social embedding of exchange provided actors with the ability to control or monopolize trade, including the goods that enter and leave a marketplace, “restricted markets” formed. These markets produced external revenues that could be used to achieve political goals. Conversely, commercialized systems required investment in public goods that incentivize the development of market cooperation and “open markets,” where buyers and sellers from across social sectors and diverse communities could engage in exchange as economic equals within marketplaces. In this article, we compare market development at the Late Postclassic sites of Chetumal, Belize, and Tlaxcallan, Mexico. We identified a restricted market at Chetumal, using the distribution of exotic goods, particularly militarily and ritually charged obsidian projectile points; in contrast, an open market was built at Tlaxcallan. Collective action theory provides a useful framework to understand these differences in market development. We argue that Tlaxcaltecan political architects adopted more collective strategies, in which open markets figured, to encourage cooperation among an ethnically diverse population.

The widespread use of herbicides in cropping systems has led to the evolution of resistance in major weeds. The resultant loss of herbicide efficacy is compounded by a lack of new herbicide sites of action, driving demand for alternative weed control technologies. While there are many alternative methods for control, identifying the most appropriate method to pursue for commercial development has been hampered by the inability to compare techniques in a fair and equitable manner. Given that all currently available and alternative weed control methods share an intrinsic energy consumption, the aim of this review was to compare methods based on energy consumption. Energy consumption was compared for chemical, mechanical, and thermal weed control technologies when applied as broadcast (whole-field) and site-specific treatments. Tillage systems, such as flex-tine harrow (4.2 to 5.5 MJ ha−1), sweep cultivator (13 to 14 MJ ha−1), and rotary hoe (12 to 17 MJ ha−1) consumed the least energy of broadcast weed control treatments. Thermal-based approaches, including flaming (1,008 to 4,334 MJ ha−1) and infrared (2,000 to 3,887 MJ ha−1), are more appropriate for use in conservation cropping systems; however, their energy requirements are 100- to 1,000-fold greater than those of tillage treatments. The site-specific application of weed control treatments to control 2-leaf-stage broadleaf weeds at a density of 5 plants m−2 reduced energy consumption of herbicidal, thermal, and mechanical treatments by 97%, 99%, and 97%, respectively. Significantly, this site-specific approach resulted in similar energy requirements for current and alternative technologies (e.g., electrocution [15 to 19 MJ ha−1], laser pyrolysis [15 to 249 MJ ha−1], hoeing [17 MJ ha−1], and herbicides [15 MJ ha−1]). Using similar energy sources, a standardized energy comparison provides an opportunity for estimation of weed control costs, suggesting site-specific weed management is critical in the economically realistic implementation of alternative technologies.

Existing cognitive health literature focuses on the perspectives of older adults with dementia. However, little is known about the ways in which healthy older adults without dementia understand their cognitive health. In rural communities, early dementia diagnosis may be impeded by numerous factors including transportation challenges, cultural obstacles, and inadequate access to health and support services.

Based on participant observation and two waves of 42 semi-structured interviews, this study examined healthy, rural older adults’ perceptions of cognitive health. By providing an innovative theoretical foundation informed by local perspectives and culture, findings reveal a complex and multidimensional view of cognitive health. Rural older adults described four key areas of cognitive health ranging from independence to social interaction. As policy makers, community leaders, and researchers work to address the cognitive health needs of the rural aging demographic, it is essential that they listen to the perspectives of rural older adults.

New directions in national transportation policy have rekindled interest in transportation market structure. The Department of Transportation policy goal to equalize competitive opportunities between modes requires greater understanding of intermodal competitiveness in terms of inherent advantages of each mode in serving particular transportation markets. Flexible railroad ratemaking in the absence of market dominance, provided for in the Railroad Revitalization and Regulatory Reform Act of 1976, requires measures of intermodal competitiveness to define market dominance.

This article serves two purposes. The first is to develop market area sensitivity as a tool for distinguishing competitive from noncompetitive transportation market structures.

This paper identifies current and developing issues in interregional competition and agricultural transportation. These topics are related to the extent that the cost and quality of transportation services is one major determinant of the economic distance between regions.

Interregional competition analysis was introduced to agricultural economics in the late 1930s, with the stimulus of agricultural research funds authorized by the Bankhead-Jones Act of 1935, under the leadership of Sherman E. Johnson and John D. Black. Interregional competition developed as a synonym for regional comparative advantage. Interregional competition analysis is a general set of tools designed to measure regional comparative advantage.

Adjustments in the distribution system, as rapidly and as consistently as they occur, seldom fail to elicit substantial emotional reaction. Linking the production system with the consumption system, the distribution system is extremely pervasive. Small changes have widespread effects. Thorough, objective analysis of these changes is difficult and vulnerable, especially when public hearing procedures provide little time for intensive study.

We describe the methodology required for estimation of photometric estimates of metallicity based on the SDSS gri passbands, which can be used to probe the properties of main-sequence stars beyond ~10 kpc, complementing studies of nearby stars from more metallicity-sensitive color indices that involve the u passband. As a first application of this approach, we determine photometric metal abundance estimates for individual main-sequence stars in the Virgo Overdensity, which covers almost 1000 deg2 on the sky, based on a calibration of the metallicity sensitivity of stellar isochrones in the gri filter passbands using field stars with well-determined spectroscopic metal abundances. Despite the low precision of the method for individual stars, internal errors of σ[Fe/H]~0.1 dex can be achieved for bulk stellar populations. The global metal abundance of the Virgo Overdensity determined in this way is 〈[Fe/H]〉 = −2.0±0.1 (internal) ±0.5 (systematic), from photometric measurements of 0.7 million stars with heliocentric distances from ~10 kpc to ~20 kpc. A preliminary metallicity map, based on results for 2.9 million stars in the northern SDSS DR-7 footprint, exhibits a shift to lower metallicities as one proceeds from the inner- to the outer-halo population, consistent with recent interpretation of the kinematics of local samples of stars with spectroscopically available metallicity estimates and full space motions.