In this article, we study the Johnson homomorphisms of basis-conjugating automorphism groups of free groups. We construct obstructions for the surjectivity of the Johnson homomorphisms. By using it, we determine their cokernels of degree up to four and give further observations for degree greater than four. As applications, we give the affirmative answer to the Andreadakis problem for the basis-conjugating automorphism groups of free groups at degree four. Moreover, we calculate twisted first cohomology groups of the braid-permutation automorphism groups of free groups.

This study explores the relationships between board internationalization, board size, and strategic change of firms from emerging markets. Building upon resource dependency theory (RDT), this study proposes that board internationalization has a positive impact on strategic change. A higher level of nationality heterogeneity on the board of directors, an organization receives more diverse perspectives and experiences from foreign directors. This, in turn, influences firms to identify areas of improvement and engage in strategic change. In addition, conventional wisdom suggests that board size per se has a negative relationship with strategic change. However, this study proposes that large board sizes together with board internationalization can foster strategic change. In other words, board size and board internationalization can jointly counteract the inertial nature of a large board, resulting in strategic change. The analyses of 255 publicly listed firms from nine emerging countries for the 2013–2018 financial years confirm these predictions.

This paper tests for the cyclical implications of the external constraint in Argentina from 1930 to 2018, and investigates the responses of GDP, real wages, trade balance, and external debt to external trade shocks using a recursive vector-autoregressive model. Moreover, considering the shift in development strategy in 1976, marked by the transition from state-led industrialization to deregulation and trade openness, changes in external vulnerability are analyzed.

Results confirm a trade balance bottleneck hindering future growth, and that external debt fails to spur short-term growth or improve the purchasing power of the population, thereby confirming the vicious cyclical dynamics of stop-and-go and go-and-crash for the entire period. Also, real external vulnerability grew significantly after 1976, as evidenced by the fact that the cumulative impact of movements in the terms of trade and external demand rose from explaining 30% to 43% of GDP variation.

Given any finite collection $\mathcal {G}$ of translation-invariant linear equations of the form

$$ \begin{align*} \sum_{i=1}^{v} m_i x_i = m_0 x_0, \end{align*} $$

where $(m_0, m_1, \ldots , m_v) \in \mathbb {N}^{v+1}$, $m_0 = \sum _{i=1}^{v} m_i$ and $v \ge 2$, we estimate lower and upper bounds of the supremum of the Hausdorff dimension of sets on the real line that uniformly avoid nontrivial zeros of any f in $\mathcal {G}$.

People from different ethnic minorities in the UK are experiencing a steeper increase in dementia diagnosis compared to their white counterparts but are more likely to have a higher risk of dementia, to be diagnosed at a younger age and to die earlier from the condition. These disparities suggest the need for urgent interventions to prevent and reduce dementia risk. Despite the significant presence of Chinese people in the UK, there has been little dementia research involving them, so this study is the first in the UK to focus on Chinese communities living in five major cities. Using a cultural adaptation theoretical framework, we adapted Alzheimer’s Research UK’s virtual dementia prevention campaign Think Brain Health to meet the needs of Chinese people. We used a mixed methods approach to evaluate knowledge of dementia and brain health activities, and intention regarding help-seeking. We performed descriptive, chi-square and thematic analysis; 54 Chinese people completed the intervention, with 85 per cent aged over 60 years. Over half (56%) could not speak, read or write in English. Our results showed significant improvements in knowledge of dementia and brain health, and an improved intention to seek help and information. All participants reported a positive experience of the culturally tailored intervention and valued working with dementia researchers who were able to deliver the intervention in Chinese languages. Future work involving Chinese communities in the UK will need to identify an appropriate but non-stigmatizing Chinese term for dementia.

Recently, former colonial powers in the Global North have begun addressing their colonial pasts through their foreign policies. Some of these states pursue a feminist foreign policy (FFP). However, to date, only one FFP makes explicit mention of colonial legacies: that of Germany, adopted in 2021. How does German FFP discourse address this and what political work does this do? Contributing to critiques of coloniality in FFP, we analyze the discursive representation of Germany’s colonial past in foreign policy texts since 2021. Drawing on the socio-critical concepts theater of reconciliation by Max Czollek and remembrance superiority by Mohamed Amjahid, we find that the discourse powerfully establishes gendered notions of caring, responsible, and reflexive German statehood. This organizes how Germany’s engagement with its colonial past is told and which forms of engagement with former colonies are rendered intelligible. We argue that German FFP erases colonial structures that permeate German foreign policy and reproduces coloniality through discursive representations.

Anesthesiologists are broadly trained members of the health care workforce, managing patients daily using advanced stabilization/resuscitative techniques. They work in a collaborative, team-based model and lead multidisciplinary teams. Their work includes prioritizing patients according to the complexities of their disease presentations, and threats to life and limb. Trauma care is a regular part of the anesthesiologist’s job. The presence of anesthesiologists is required in hospitals to achieve the designation “level 1” trauma center. Anesthesiology is a specialty known for promoting safe practice principles and improving quality of care, utilizing crisis resource management and implementing cognitive aids. Despite these skillsets, anesthesiologists are generally overlooked in disaster preparedness. The number of trained anesthesiologists is similar to that of emergency medicine physicians, and they are nearly twice as abundant as general surgeons. In countries outside the US, anesthesiologists are often included in the pre-hospital team.

The purpose of this article is to emphasize the skillsets of anesthesiologists and to advocate for their inclusion in disaster preparedness teams. Due to their presence and comfort throughout the hospital system, broad training in emergent and elective cases, resuscitation skills, procedural skills, communication skills, daily triage, and team management, anesthesiologists should be considered essential leaders during mass casualty incident preparation and response.

A new large dissorophid temnospondyl, Buxierophus pouilloni n. gen. n. sp., is described on the basis of a well-preserved adult skeleton found in the Lower Permian bituminous claystone of Buxières-les-Mines, a fossiliferous locality of the Bourbon-l’Archambault Basin (Allier, France). This new taxon, with a skull length of about 12 cm, is characterized by a unique combination of characters: dorsal midline series of osteoderms composed of two series of thin and unornamented osteoderms, some bearing conspicuous peaks dorsally; internal osteoderms with bi- or multi-lobed dorsal articulation surfaces; neural arches of the same length to that of the osteoderm. A phylogenetic analysis places Buxierophus pouilloni n. gen. n. sp. at the base of the Dissorophidae. This new dissorophid had a semi-aquatic lifestyle. It’s completely ossified ceratobranchial skeleton bears ceratobranchials with grooves as clear indication for its fish-like internal gills in adult stage. It represents the only Lower Permian dissorophid from Europe. Buxierophus n. gen. is part of a rich Permian fauna of the Buxières-les-Mines locality, which is considered as a relatively deep and large paleolake deposit.

UUID: http://zoobank.org/pub/4bc42820-21f6-4674-88ff-eed8597733c3

Yiyang Dahegu rice (YyDHG) is an important agricultural specialty of Yiyang County, Jiangxi Province, and it is also a significant component of the local cultural and economic development. In this experiment, 89 samples of Dahegu rice (DHG) were collected from Jiangxi Province, including 52 samples of YyDHG and 37 samples of DHG from other regions within Jiangxi Province (oDHG). Comprehensive analysis was conducted using polyacrylamide gel electrophoresis, field phenotypic observation, population structure analysis and quality analysis. The results of variety identification indicated that the 89 samples actually comprised 52 distinct varieties, including 19 varieties of YyDHG. Population analysis has revealed rich genetic diversity among DHG varieties within Jiangxi Province, yet no significant subpopulation differentiation was observed between YyDHG and oDHG. Quality experiments demonstrated that YyDHG exhibits significant differences in appearance quality from oDHG, but no notable differences in milling quality or cooked taste and flavour. This suggests that the competitiveness of YyDHG in the market may not entirely depend on its unique quality characteristics, but rather more on its cultural value and brand effect. This experiment conducted a comprehensive analysis of the variety characteristics, genetic diversity and quality traits of YyDHG. Not only does it provide a scientific basis for the breeding and germplasm resource conservation of YyDHG, but it also holds positive implications for promoting the development of its industry.

Detecting structural changes in economic relationships has been a longstanding challenge in econometrics. Most of the literature on structural breaks has considered abrupt structural breaks. Existing tests for detecting smooth structural change typically rely on kernel estimation. In this article, we introduce a novel tuning-parameter-free test that minimizes a criterion function over all possible nondecreasing or nonincreasing structural change functions. This test is pivotal (after appropriate scaling) in the scalar case and remains computationally simple even in multivariate settings. Compared to existing nonparametric tests, our method offers superior power against local monotonic structural changes and does not involve the choice of a bandwidth parameter. A simulation study and two empirical examples highlight the merits of the proposed test relative to some popular tests for structural changes in the literature.