We consider an inhomogeneous Erdős–Rényi random graph ensemble with exponentially decaying random disconnection probabilities determined by an independent and identically distributed field of variables with heavy tails and infinite mean associated with the vertices of the graph. This model was recently investigated in the physics literature (Garuccio, Lalli, and Garlaschelli 2023) as a scale-invariant random graph within the context of network renormalization. From a mathematical perspective, the model fits in the class of scale-free inhomogeneous random graphs whose asymptotic geometrical features have recently attracted interest. While for this type of graph several results are known when the underlying vertex variables have finite mean and variance, here instead we consider the case of one-sided stable variables with necessarily infinite mean. To simplify our analysis, we assume that the variables are sampled from a Pareto distribution with parameter $\alpha\in(0,1)$. We start by characterizing the asymptotic distributions of the typical degrees and some related observables. In particular, we show that the degree of a vertex converges in distribution, after proper scaling, to a mixed Poisson law. We then show that correlations among degrees of different vertices are asymptotically non-vanishing, but at the same time a form of asymptotic tail independence is found when looking at the behavior of the joint Laplace transform around zero. Moreover, we present some findings concerning the asymptotic density of wedges and triangles, and show a cross-over for the existence of dust (i.e. disconnected vertices).

Shortages of kerosene, used to cook food and melt ice for drinking water on the Terra Nova Expedition of 1910–13, hastened the death of Captain Robert Falcon Scott and his three remaining companions in March 1912. Various explanations for the losses have been proposed, but no definitive account has been published. This article aims to provide a reliable, authoritative and complete history of Scott’s kerosene shortages.

A review of primary expedition records (personal journals in particular) has been undertaken, assembling information about fuel shortages and related matters, and identifying and evaluating seven potential explanations for shortages. The evidence indicates that many of the potential explanations are inconsistent with trusted historical evidence, and that one appears to be based upon a widespread misinterpretation of Scott’s diary. The prevalent explanation is a complex interplay of facts, omissions, distractions and fiction, traceable to an Editor’s Note in the expedition’s official book “Scott’s Last Expedition.”

This article identifies four significant factors that contributed to fuel shortages: an intentional reduction of their fuel allowance in some depots by one third, their reduced speed of travel on later barrier stages, unseasonably cold weather and the unplanned use of fuel to cook pony meat.

Following European pension reforms, the responsibility for old-age provision has increasingly shifted from the state to the individual. This study examines how behavioral norms and perceptions of parents’ or grandparents’ financial situation influence participation in the voluntary second pillar. Using survey data from two Italian provinces with high coverage of supplementary pension funds, the analysis shows that norms transmitted through family and friends strongly predict participation, whereas workplace norms matter only for women. Perceived financial hardship of older relatives increases both awareness of retirement planning and the likelihood of enrollment, underscoring the role of the social environment.

This paper introduces a high-power, compact active integrated antenna with extended voltage tuning capability, featuring a nearly 1 GHz oscillation range in the X-band (8.35–9.21 GHz). This broad frequency range enhances the oscillator’s flexibility and adaptability for advanced applications in radar systems and wireless communication. The design integrates InGaAs HEMT technology using a feedback circuit. The self-oscillating antenna, manufactured on a RO4003C substrate with a height of 0.508 mm and dimensions of 0.23 × 0.27 ${{\lambda}}_0^2$, demonstrates impressive performance through small- and large-signal analyses. The obtained results are based on harmonic balance simulation using the auxiliary generator technique within the Advanced Design Systems (ADS) tool. Simulation results indicate power levels from 10.928 dBm to 8.062 dBm, while measured output power ranges from 10.90 dBm to 7.916 dBm, and Equivalent Isotropically Radiated Power (EIRP) values were between 12.68 dBm and 10.198 dBm in the interval 8.35–9.21 GHz. Phase noise measurements are −102.94 dBc/Hz at 1 MHz and −124.13 dBc/Hz at 10 MHz. The simulated and measured results are in good agreement, highlighting the robustness and reliability of the oscillator, as well as the effectiveness of the design, which is well suited for applications requiring high stability, precise frequency control, high output power, and efficient performance for microwave applications.

Freedom of self-expression is an elusive value. In ordinary political discourse, the value of self-expression seems obvious. But it is surprisingly difficult to specify freedom of self-expression without collapsing it into the value of freedom in general. And reducing freedom of self-expression to a special case of freedom of speech yields a Procrustean and underinclusive account. This paper develops a novel account of freedom of self-expression which avoids both pitfalls. First, I show that the ubiquity of self-expression as a phenomenon is compatible with the normative distinctiveness of freedom of self-expression as a value. Second, I show that freedom of self-expression requires, at minimum, freedom from content-based limitations on the exercise of personal style. Third, I ground the moral significance of freedom of self-expression in two distinct interests: in autonomy of self-definition, and in opportunities for recognition. Ultimately, freedom of self-expression emerges as a distinct and coherent moral and political value.

This article traces the figure of the lūṭī in the writings of Ibn Qayyim al-Jawziyyah (d. 1350) and Ibn Kathīr (d. 1373). These two fourteenth-century scholars adopted a harsh and uncompromising view of the lūṭī as a sexual actor, repeatedly depicting the horrific afterlife punishments awaiting him in Hell. As part of their hyperbolic and extreme depiction of the lūṭī as a damned sexual figure, they imagine him through his communal relationship to his forebears, both among the Qur’anic People of Lūṭ and those like him in his present day. They thereby construct a sexual community of sorts, framing the lūṭī through a parodic repurposing of a strikingly Islamic idiom of belonging and community-building. In doing so, I argue, these texts open up broad possibilities for us to rethink how medieval authors theorised what we might call ‘sexual identity’ and understood sex to construct ways of being in the world around them.

Schwartzitrema Vigueras, 1941, is a small, rarely reported genus of diplostomoideans that parasitize avian definitive hosts, predominantly anhingas, on several continents. No DNA sequences were previously available for any Schwartzitrema spp. In the present study, we describe adults of 2 new Schwartzitrema spp. from anhingas in Brazil. We also provide description of metacercaria of one of the new species from Argentina. Schwartzitrema macrotesticulata n. sp. lacks a clear separation between its testes, appearing almost as a contiguous, irregularly shaped, lobular mass. A highly characteristic feature of Schwartzitrema macroholdfastus n. sp. is a strongly enlarged lobe of the holdfast organ. These features, along with distribution of vitellarium and nature of the preputial folds surrounding the genital cones, separate the new species from their congeners. We generated partial sequences of the large ribosomal subunit (28S) rDNA and cytochrome c oxidase subunit I (cox1) mtDNA genes from adult forms of both species and cox1 of metacercarial stages. The 28S sequences were used for phylogenetic inference. The pairwise sequence divergence between the 2 species is 4.0–4.6% in cox1 gene. Intraspecific variability in the same cox1 region did not exceed 0.8% despite the long geographic distance between collecting sites in Brazil and Argentina.

Although economic knowledge constitutes a central element of political governing, people have divergent opinions about its nature and whether it can or should be accessible to everyone. This paper examines the contested role of economic knowledge in Sweden during the Enlightenment, focusing on the philosophical and political contributions of Anders Chydenius (1729–1803). Chydenius published several works and pamphlets on economic matters in the 1760s, the last of which led to his dismissal from the Swedish Diet in 1766. What made this work so politically provocative? I argue that its notoriety stemmed from two key claims: he likened basic economic principles to natural laws, which because of their simplicity all politicians were able to understand, and he believed in making these principles widely available in society. He also acknowledged that different social classes had conflicting interests in monetary policy, contending that, from a national economic perspective, the interests of traders, manufacturers, and workers were more important than those of the aristocratic elite. This perspective not only challenged the established political order but also raised questions about the neutrality and the role of the public in discussions about economic knowledge.

A critique of capitalism, in order to count as such, must identify a problem that is not shared by all other feasible economic systems, for this would amount to little more than a complaint (or kvetch) about the human condition. The distinction between critique and kvetch raises the question of what constitutes a feasible alternative to capitalism. Although it sounds as though this is a pragmatic or technical question, I will argue that it is usually normative. With this clarification in place, I will consider whether Waheed Hussain’s concerns about capitalism amount to a critique or a kvetch.

The aim of this paper is to provide an in-depth study, including both invasive and non-invasive chemical analyses, and lead isotope analysis, of one of the northernmost Early Neolithic copper flat axeheads in Europe, the Öja axehead from west Sweden. In addition, we present an updated catalogue of the early copper axeheads found in Sweden. Our analyses suggest that the copper used to manufacture the Öja axehead originates from eastern Serbian ore sources, confirming previous studies on other Early Neolithic metal finds from southern Scandinavia. Comparing our results with the current understanding of copper production and circulation across the continent during the 5th and 4th millennium BCE, important new questions emerge concerning early copper mining in south-east Europe and the production and consumption of early copper artefacts in Europe and Scandinavia.

In this study, self-piercing riveting (SPR) connection, which is one of the joining techniques of aluminum alloys, is investigated. SPR is a cold mechanical joining process used to join two or more sheets of material by pushing the rivet that pierces the upper sheet under the guidance of a suitable mold and then locking it to the lower sheet. The SPR process was carried out with the split Hopkinson pressure par test system. The bar inside the cylinder, accelerated by pressure, performs the riveting process by hitting the surface of the mold developed for SPR. In this study, different numbers of slots were opened on the rivet tail, and the process was carried out using SPRs at different deformation rates. A powerful tomography scanner device designed for 3D metrology was used to visualise the SPR joining mechanisms without cutting. Tensile-shear tests were applied to the samples made with rivets with different numbers of slots and different pressures, and cross-tension tests were also applied to the samples prepared with rivets with different numbers of slots. The opened slots caused a decrease in the maximum strength of the samples. It was understood that the appropriate riveting pressure could change the connection strength by approximately 50%. In general, the force values decreased as the number of slots increased.

Most exoskeletons are designed with the shoulder joint’s instantaneous center of rotation (ICR) in mind as a fixed joint, often also known as the center of the shoulder joint. In fact, shoulder ICR changes during shoulder abduction–adduction and flexion–extension. Abduction–adduction causes the ICR to move in the frontal plane, which is caused by the joint movement of the shoulder joint, including depressed elevation and horizontal translation, while the flexion–extension movement of the sagittal plane produces the shoulder extension movement. If the change in shoulder ICoR movements is not compensated for in the exoskeleton design, they can create discomfort and pain for the robot’s wearer. Although conventional exoskeletons typically treat the shoulder joint as a three degree of freedom spherical joint, this study incorporates a more sophisticated understanding of shoulder kinematics. The developed scapulohumeral rhythm compensation mechanism successfully compensates for shoulder joint motion, with simulation results confirming kinematics that closely match ergonomic shoulder movement patterns. First, the complex kinematics of the shoulder joint are analyzed. To meet the demand for mismatch compensation, a shoulder exoskeleton based on a winding mechanism is designed. A mismatch compensation model is established, and theoretical analysis and simulation verify that the designed shoulder exoskeleton has a mismatch compensation function. While solving the mismatch problem, the human–machine coupling model is established through OpenSim software. The simulation results show that the designed exoskeleton has a good assisting effect from the perspective of muscle force generation and shoulder torque.