A dual-band dual-polarized wearable antenna that applies to two different operating modes of wireless body area networks is proposed in this letter. The antenna radiates simultaneously in the ISM band at 2.45 and 5.8 GHz. It consists of a rigid button-like radiator and a flexible fabric radiator. At 2.45 GHz, an omnidirectional circularly polarized pattern is radiated by the flexible radiator, which is suitable for the on-body communication. At the same time, a linearly polarized broadside pattern for off-body communication is generated by button radiator at 5.8 GHz. The antenna has been validated in free space and human body environments. The impedance bandwidth at 2.45 and 5.8 GHz are 5% and 35%, and the gain is measured to be 0.15 and 5.95 dBi, respectively. Furthermore, the specific absorption rates are simulated. At 2.45 and 5.8 GHz, the results averaged over 1 g of body tissue are 0.128 and 0.055 W/kg. The maximum value at both bands is below the IEEE C95.3 standard of 1.6 W/kg.

Stone locales together with continuous maps form a coreflective subcategory of spectral locales and perfect maps. A proof in the internal language of an elementary topos was previously given by the second-named author. This proof can be easily translated to univalent type theory using resizing axioms. In this work, we show how to achieve such a translation without resizing axioms, by working with large, locally small, and small-complete frames with small bases. This requires predicative reformulations of several fundamental concepts of locale theory in predicative HoTT/UF, which we investigate systematically.

We consider the drifting p-Laplace operator

\begin{equation*}\Delta_{p,v}u=e^{-v} \text{div}\,(e^v |\nabla u|^{p-2}\nabla u)\end{equation*}

and discuss generalized weighted Hardy-type inequalities associated with the measure $d\mu=e^{v(x)}dx$. As an application, we obtain several Liouville-type results for positive solutions of the non-linear elliptic problem with singular lower order term

\begin{equation*}-\Delta_{p,v} u\ge c(x) u^{p-1}+B \frac{|\nabla u|^p}{u} \quad \text{in}\ \Omega,\end{equation*}

where Ω is a bounded or an unbounded exterior domain in ${\mathbb{R}}^N$, $N \gt p \gt 1$, $B+p-1 \gt 0$, as well as of the non-autonomous quasilinear elliptic problem

\begin{equation*}-\Delta_{p,v} u+b(x)|\nabla u|^{p-1} \ge c(x) u^{p-1}\quad \text{in}\ \Omega,\end{equation*}

with general weights $b\ge0$ and c > 0. Liouville-type results are also discussed for a class of higher order differential equations.

This article argues that the concept of dualism has ceased to operate as a reliable indicator of, or guide to, the relationships between domestic and international laws in the UK’s constitutional order. Dualism, it is argued, provides only a partial account of the complex interactions between domestic and international laws, cannot accommodate the hybrid products of interactions with European legal orders and ignores the post-“incorporation” processes of domestication through which international and domestic norms are reconciled. The connections between domestic and international laws are – in contrast to dualism’s binary simplicity – multi-dimensional and interconnected with the UK’s (recently turbulent) constitutional politics.

Adolescents frequently victimized by peers are two to three times more likely to develop an anxiety disorder than their non-victimized peers. However, the fine-grained mechanisms that explain how peer victimization confers risk for anxiety in adolescents’ daily lives are not well-understood. Leveraging an intensive longitudinal design, this study examined same- and cross-day links between peer victimization and anxiety, investigating social threat sensitivity as a potential underlying mechanism. One hundred ninety-five adolescents (Mage = 16.48, SDage = 0.35; 66% female, 27% male, 11% non-binary, identifying with another gender; 48% White, 20% Asian, 15% Black, 17% identifying with another race/ethnicity) completed brief daily assessments of peer victimization, social threat sensitivity, and anxious affect for 14 days. Multilevel analyses indicated that adolescents reported greater anxious affect on days when they experienced peer victimization compared to days without victimization. Although peer victimization did not predict anxious affect the following day, it was associated with increased anxious affect two days later. Social threat sensitivity significantly mediated the same-day, but not cross-day, association between peer victimization and anxious affect, controlling for prior-day threat sensitivity and anxiety. The findings suggest that heightened social vigilance partially accounts for anxious affect in adolescents facing peer victimization in daily life.

It is widely accepted that social class in Africa is defined not just by economic metrics but also by social perceptions and individual identifications. Yet less has been written about the mechanisms through which people form these class perceptions and identifications. This article explores how the sociopolitical and physical architecture of schools affects people’s understanding of social class. Using participatory methods with students complemented by architectural studies, focus group discussions, and interviews, Manful shows how young Ghanaians find and place themselves in social classes and other hierarchies through their perceptions and usage of school buildings.

This paper commemorates the 50th anniversary of the 1973 recession during Salvador Allende’s government by offering a comprehensive analysis of macroeconomic populism. Focusing on the lessons from this historical episode, it is argued that the lax economic policies in 1970 and 1971 triggered the boom of 1971, culminating in a financial crisis in 1972 and an economic recession in 1973. The examination encompasses an evaluation of Chilean macroeconomic populism, delving into the impact of these lax policies on the business cycle. Furthermore, it addresses prevalent misinterpretations of the 1973 recession in the context of recent Latin American events. The paper concludes by extrapolating broader insights from the Chilean experience, offering valuable lessons for shaping effective economic policies in Latin America.

In this article, I propose an account of episodic memory and episodic future-directed imagination for which I invent the term, ‘embodied constructivism’. Embodied constructivism, I claim, is a more sophisticated, enactivist version of Augustine of Hippo’s constructivist account of memory and expectation on which rest his epistemic claims concerning how God is known and remembered. However, embodied constructivism avoids metaphysical issues facing Augustine’s account by drawing on cutting-edge theories in philosophy of memory, studies in experimental psychology, and recent findings in cognitive neuroscience. Embodied constructivism is a synthesis of two contemporary theories of memory: an embodied theory of memory generation – specifically, autopoietic enactivism – with a constructivist model – specifically, simulationism. As embodied constructivism asserts, mentally travelling to the past to relive it in episodic memory and mentally travelling to the future to pre-live it in future-directed imagination are co-functional processes. In addition to preserving Augustine’s epistemic claims concerning how God is remembered and known, a further upshot of embodied constructivism is that it illustrates the importance of philosophy of science to theology in its reliance on a scientifically rigorous model of memory in defence of epistemological theology.

This paper shows how to set up Fine’s “theory-application” type semantics so as to model the use-unrestricted “Official” consequence relation for a range of relevant logics. The frame condition matching the axiom $(((A \to A) \land (B \to B)) \to C) \to C$—the characteristic axiom of the very first axiomatization of the relevant logic E—is shown forth. It is also shown how to model propositional constants within the semantic framework. Whereas the related Routley–Meyer type frame semantics fails to be strongly complete with regards to certain contractionless logics such as B, the current paper shows that Fine’s weak soundness and completeness result can be extended to a strong one also for logics like B.

This paper assesses the change over time of within-family inequality in the educational outcomes of Spaniards by measuring the effects of birth order on the number of years of formal education attained in families of different sizes. The analysis is based on data from the 1991 Sociodemographic Survey, adopts the perspective of cohort analysis, and looks at those born in the first six decades of the 20th century. The data reveal that the effects of both the number of siblings and, above all, birth order increased over the cohorts. This means that educational inequalities within Spanish families tended to grow in contrast to inequalities between families in a period of great expansion of the education system. Although the Spanish experience may have differed from that of other developed countries, it fits well within the theoretical framework of conditional dilution of parental resources associated with the number of siblings and birth order.

To assess the time scales and relative importance of temporal decoupling between hillslope erosion and the introduction of sediment to streams in a Yangtze River headwater basin, we used multiple techniques to date sediments in alluvial fans and terraces in a third-order stream valley draining a 30-km2 catchment in SW Sichuan, China. Poorly sorted angular sediments in tributary-junction alluvial fans ranged in age from 11261 BCE to 1844 CE, and predominantly fine-grained overbank sediments in alluvial terraces date to approximately 1700–1950. Ethnographic observations and field mapping of hillslope soil depths indicate that terrace sediments and upper strata of several fans correspond to a period of hillslope erosion associated with the intensification of hillslope swidden agriculture. Contemporary sediment production is dominated by lateral fluvial erosion of valley-bottom landforms rather than by hillslope erosion. The long-term temporal decoupling by valley storage of hillslope erosion from sediment delivery to streams has relevance to contemporary hillslope erosion and sedimentation control efforts in the Yangtze Basin. It also motivates investigating whether valley-filling anthropogenic “legacy sediments” may play a role in decoupling hillslope erosion from sediment production in other Yangtze Basin headwater basins.

In complex work environments, improving efficiency and stability is an important issue in robot path planning. This article proposes a new path optimization algorithm based on pseudospectral methods. The algorithm includes an adaptive weighting factor in the objective function, which automatically adjusts the quality of the path while satisfying the performance indicators of the shortest time. It also considers kinematic, dynamic, boundary, and obstacle constraints, and applies the Separating Axis Theorem collision detection method to improve computational efficiency. To discretize the continuous path optimization problem into a nonlinear programming problem, the algorithm utilizes Chebyshev polynomials for the interpolation of state and control variables, along with the adoption of the Lagrange interpolation polynomial to approximate the curve. Finally, it solves the nonlinear programming problem numerically using CasADi, which supports automatic differentiation. The results of the simulation demonstrate that the path optimized by the adaptive-weight pseudospectral method can satisfy various constraints and optimization objectives simultaneously. Experimental verification confirms the efficiency and feasibility of the proposed algorithm.

The history of work is marred by the fact that the meaning of “labour” or “work” changed with the arrival of modern society, making it difficult to draw comparisons across time. There has been a shift from understanding work as any activity that may secure continued living and well-being, to seeing it as paid, full-time, specialized employment. This transformation has obscured the work of some groups in society (notably women but also others) and work in the form of multiple employments (which often means multiple labour relations). The methods and sources presented in this Special Theme offer valuable tools for historians seeking to address and navigate these issues.