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Climate change increasingly threatens human development, economic resilience and labour market stability. Using panel data from Chinese A-share listed firms (2007–2021), this study quantifies the employment impacts of extreme temperatures. A one-standard-deviation increase in exposure reduces employment by 0.07 per cent, equivalent to an average loss of 0.0054 workers per firm and 4.36 jobs across the sample. Extreme heat has a stronger effect than cold, with temperature bin analysis showing an average loss of 0.191 workers per firm and 15.565 jobs overall. Mechanism analyses indicate that extreme temperatures heighten operational risks and financial constraints, reducing labour demand. Internal and external buffers are identified: higher wages mitigate employment losses, government subsidies provide external support, while robot adoption and supply chain concentration show limited moderating effects. Heterogeneity analyses reveal greater vulnerabilities in underdeveloped, resource-dependent and climate-sensitive regions. Results emphasize the need for climate-adaptive policies to protect employment amid rising environmental risks.
This study examines how entrepreneurs balance between short-term operational continuity and long-term development amid a polycrisis comprising economic volatility, geopolitical disruption, and regulatory instability. Using survey data from 150 entrepreneurs and four case studies, it develops the Integrated Entrepreneurial Resilience and Growth model, which theorizes resilience through three interlinked mechanisms: improvizational action, institutional workarounds, and strategic reconfiguration. Findings reveal that entrepreneurs employ dual temporal strategies, improvising for immediate survival while planning for future growth. Additionally, ecosystem engagement with accelerators, mentors, and investors enhances resilience by providing resources, knowledge, and legitimacy. The study advances a dynamic and embedded understanding of resilience by linking internal adaptive capacities with external institutional support. It bridges dynamic capabilities and entrepreneurial ecosystem perspectives to explain how entrepreneurs navigate overlapping crises. The study presents a novel framework for resilience under continuous structural disruptions, offering insights for policymakers and program designers seeking to support entrepreneurship in volatile contexts.
A series of new laboratory experiments explore the transient flow in an enclosed space of depth $H$, which is subject to an upward displacement ventilation flux, $Q_V$, and which contains a localised heat source of buoyancy flux $F_s$, when the buoyancy of the ventilation air changes by $\Delta g'$. Initially, the plume, produced by the heat source, entrains the ventilation air, leading to a two-layer stratification which depends on the dimensionless strength of convection, $\mu \propto F_s^{1/3}H^{5/3}/Q_V$. When the buoyancy of the ventilation air decreases, $\Delta g' \lt 0$, a new layer of relatively dense fluid grows next to the floor. The fluid entrained by the plume from this new layer causes the plume to intrude between the original upper and lower layers. For a sufficiently large decrease in buoyancy, $|\Delta g' Q_V /F_s| \gt 1$, then as the new lower layer grows, the plume eventually becomes negatively buoyant relative to the original lower layer and intrudes between the new lowest layer and the original lower layer. When the buoyancy of the air supply increases, $\Delta g'\gt 0$, it mixes with the fluid in the original lower layer. If the increase in buoyancy is sufficient, $\Delta g' Q_V/F_s\gt 1$, then the new supply air eventually also mixes with the original upper layer. In each case, a new two-layer stratification becomes re-established. We propose new models for the evolution of the transient flow, assuming that the buoyancy profile can be approximated by a staircase of well-mixed layers. These layers are emptied or filled through the action of the plume and ventilation. We find that the model predictions are consistent with our new experiments in each of the four regimes. We conclude by discussing the implications of these transient flows for thermal comfort and the mixing of contaminants into the occupied lower region of the space.
Wars make states, but the conclusion of conflict is critical for the trajectory of state-building that follows. At the end of World War II, both conservatives and progressives in the United States recognized the potential for ongoing statist development fueled by the wartime introduction of mass taxation and the expansion of regulatory intervention into the lives of citizens and the activities of firms. Entrenched traditions of anti-statism in American politics resurfaced forcefully only to encounter the new threats of a nuclear-capable Soviet Union and the onset of what came to be known as the Cold War. This conjuncture both reoriented and fractured trajectories of state development, leading to reliance on mechanisms – capitation, categorical eligibility, regulation of organizations, and limited duration – that enabled expansive federal intervention in the form of funds attached to rules but minimized the construction of new bureaucratic organization. These governing practices are evident in both the Serviceman’s Readjustment Act of 1944 (the G.I. Bill) and the European Recovery Act of 1948 (the Marshall Plan). The result was the development of a powerful postwar state that was deeply marked by anti-statist politics, a configuration that shaped future waves of both policy expansion and openings for renewed efforts to constrain the capacity of the American state.
While critical literature sought to expand the agenda of a reflexive approach to democratic peace, it does not explain how reflexivity can be carried to the public, particularly in times of public deception, and what practical tools theorists hold, qua public intellectuals, to advance this objective. This article argues that classical realism, Hans Morgenthau’s work in particular, can amend this lacuna. Morgenthau’s signpost of ‘interest defined in terms of power’ arms critical scholars with an important tool to retain the premises of Kantian democratic peace; that is, it helps preserve an open public sphere where the public can deliberate the nation’s fundamental interests and values spatio-temporally, and offer democratic control. The significance of this contribution is twofold: first, public reflexivity is key in times of deception because in these times scholars who seek to influence elites find themselves in the paradoxical position of renouncing reflexivity or risking irrelevance. Second, in the absence of an open public sphere where social solidarity and meaning can be formed spatio-temporally, deception feeds into an environment of mistrust and alienation that renders democracy ripe for demagogues.
In this article, we call for a more inclusive field of I-O psychology that extends its consideration toward all workers—including nonhuman animal workers—as worthy of study and advocacy. Although many fields in psychology already incorporate nonhuman animals in their theories and implications, I-O has largely overlooked the thoughts, feelings, and behaviors of these individuals, who engage in tasks that contribute to society. To demonstrate the intertwined nature of animal and human work, we summarize the variety of occupations and tasks that nonhuman animals have had within the history of humans. These animals have worked alongside humans for millennia, filling similar or complementary jobs that human workers perform. Although the nature of animal works varies, spanning different work dimensions, I-O psychology content areas address challenges found within each of the dimensions. We present a “work dimensions” framework that helps identify when an individual is a “worker” from the lens of I-O psychology. This framework highlights how the same critical work constructs considered for humans can likewise be considered for nonhuman labor. We describe several ways that a nonhuman animal-inclusive I-O can benefit the field along research, educational, and policy dimensions. By considering work along its fundamental characteristics and workers along their mental properties, I-O psychology can become more inclusive of a wide range of individuals at the margins of society.
The genus Bursaphelenchus has attracted significant attention due to its economically devastating and quarantined species – notably the pine wood nematode B. xylophilus and B. cocophilus. Despite their ecological and agricultural importance, genomic data for this genus remain scarce. In this study, we sequenced and assembled the complete mitochondrial genomes of three Bursaphelenchus species (B. chengi, B. parantoniae, and B. sinensis) using high-throughput sequencing. The circular mitogenomes exhibited size variation, with B. chengi (17,670 bp), B. parantoniae (15,021 bp), and B. sinensis (18,386 bp) each containing the typical nematode mitochondrial gene complement: 12 protein-coding genes (PCGs), 2 ribosomal RNA (rRNA) genes, and 22 transfer RNA (tRNA) genes. Phylogenetic analysis based on the concatenated amino acid sequences of the 12 PCGs revealed that these species form a sister clade to B. xylophilus and B. mucronatus. Comparative mitogenomic analysis demonstrated a conserved gene arrangement shared among Bursaphelenchus, Aphelenchoides, Caenorhabditis, Cruznema tripartitum, and Pristionchus pacificus, suggesting strong evolutionary conservatism across the families Aphelenchoididae, Neodiplogasteridae, and Rhabditidae. Our study enriched the mitochondrial genomic resources for Bursaphelenchus and advanced resolution of their intrageneric phylogenetic relationships.
This paper challenges the notion of emergent time in quantum cosmology by examining the reconciliation of the timeless Wheeler-deWitt equation with the Universe’s dynamical evo- lution. We critically evaluate the analogy between the Wheeler-DeWitt and Klein-Gordon equations, highlighting challenges for the identification of an emergent time parameter. We conclude that refining this analogy may lead to a better understanding of emergent time in quantum cosmology, though it is still not free from complications.
where $\phi(y)={y}/{\sqrt{1- |y|^2}}$ and $j:\mathbb{R}^N \times \mathbb{R}^N \rightarrow (-\infty, +\infty]$ is convex and lower semicontinuous. Making use of the variational approach introduced in the recent paper “Potential systems with singular $\phi$-Laplacian”, we obtain multiplicity of solutions when the action functional is even, as well as existence of multiple geometrically distinct solutions when this functional is invariant with respect to some discrete group.
This research investigated the potential improvement of IVR on procedural practical knowledge in maritime safety education in a lifeboat case study. Participants were divided into three groups: a VR, control and VR+ group. A practical test exam with a real lifeboat was conducted to evaluate the differences in number of students passed/failed and overall performances in the execution of lifeboat launching procedures between groups. There was no evidence that the VR students had a higher success rate than students in the control group in correctly and safely performing a lifeboat drill. However, VR students’ overall performances on procedural correctness were significantly better than those of the control group, despite that the VR students never practiced with a physical lifeboat. Given the importance of safety in the maritime industry, it is worthwhile to further investigate to what extent IVR can provide a solution to the current limitations in maritime safety education.
This study investigates the effects of thermal buoyancy on the ascent or descent dynamics and path instabilities of a finite-size sphere through direct numerical simulations with the immersed boundary method. By parametrically varying the density ratio $(\rho _r)$, Richardson number $({\textit{Ri}})$ and Galileo number $(\textit{Ga})$, four distinct motion regimes are identified: stable vertical, zigzagging, spiralling and chaotic regimes. These regimes emerge from the competition between particle inertial, gravitational forces and fluid thermal-buoyant forces. Compared with isothermal cases, particles with positive Richardson numbers exhibit accelerated motion due to thermal buoyancy. The critical Reynolds numbers ${\textit{Re}}_{p,cr}$ for their path instability are significantly reduced by amplifying wake recirculation zones and triggering vortex shedding. This destabilization mechanism is markedly more pronounced for light particles $(\rho _r \lt 1)$ than heavy particles $(\rho _r \gt 1)$. The present results reveal that the dynamics of heated light particles $(\rho _r=0.5, {\textit{Ri}}\gt 0)$ are governed by the codependent interplay of thermal-buoyancy intensity (${\textit{Ri}}$) and gravitational force (${\textit{Ga}}$), which collectively dictate velocity modulation and path instability patterns. Notably, thermal buoyancy elevates particle Reynolds numbers $({\textit{Re}}_p)$ while could reduce Nusselt numbers, arising from competing mechanisms between intensified convective transport and impaired conductive heat transfer – particularly pronounced for low ${\textit{Ga}}$ particles. These findings bridge the gap between fundamental fluid mechanics and thermal engineering, offering insights to optimize thermal management in particle-laden flows systems, such as industrial heat exchangers and fluidized bed reactors, where thermohydrodynamic coupling effect plays a key role in the performance.
Roman amphitheatres were centres of public entertainment, hosting various spectacles that often included wild animals. Excavation of a building near the Viminacium amphitheatre in Serbia in 2016 uncovered the fragmentary cranium of a bear. Multistranded analysis, presented here, reveals that the six-year-old male brown bear (Ursus arctos) suffered an impact fracture to the frontal bone, the healing of which was impaired by a secondary infection. Excessive wear to the canine teeth further indicates cage chewing and thus a prolonged period of captivity that makes it likely this bear participated in more than one spectacle at the Viminacium amphitheatre.