Marcus Aemilius Lepidus was one of three Roman legati sent to Greece in 201/200 b.c.e. and ended up confronting Philip V of Macedon at Abydus. Scholars have debated whether this young man was already a senator by 201 or had yet to become one. This paper argues that he had actually been a senator since 216, enrolled in Buteo’s extraordinary lectio of one hundred and seventy-seven new senators, after he had gained a corona ciuica and spolia ex hoste during the early stages of the Hannibalic War.

Standardly, echo chambers are thought to be structures that we should avoid. Agents should keep away from them, to be able to assess a fuller range of evidence and avoid having their confidence in that information manipulated. This paper argues against that standard view. Not only can echo chambers be neutral or good for us, but the existing definitions apply so widely that such chambers are unavoidable. We are all in large numbers of echo chambers at any time – they can be found not just on social media or in political groups, but in almost every social or epistemic group we could categorise ourselves into. Because we are finite and fallible, we cannot escape them and need to exist in them just to get by. The concept, then, does not actually capture something as structurally problematic as the paradigmatic cases would suggest. Our way of using the term in social epistemology needs to change.

Community Coastal Zone Assessment Surveys (CCZASs) conducted on the Scottish coast aim to characterize and assess the significance, condition, and vulnerability of coastal archaeology and to prioritize assets most at risk. Two key differences from earlier coastal zone assessment survey methods are the use of coastline vulnerability models to target fieldwork and the involvement of the public in the surveys. This article details the methodology used to plan for, carry out, and disseminate results of the surveys, including the following: evaluating and targeting coastlines in a GIS framework to focus new coastal surveys in areas most susceptible to erosion, using SCAPE's coastal archaeology recording mobile application as our survey tool, managing data through SCAPE's Sites at Risk portal, involving local volunteers, and disseminating findings and data flow into regional and national historic environment databases. We discuss results and reflections from surveys of the Highland, Moray, and Aberdeenshire coastlines conducted in 2022 and conclude with general principles applicable beyond Scotland.

Robotic manipulation inherently involves contact with objects for task accomplishment. Traditional motion planning techniques, while having shown their success in collision-free scenarios, may not handle manipulation tasks effectively because they typically avoid contact. Although geometric constraints have been introduced into classical motion planners for tasks that involve interactions, they still lack the capability to fully incorporate contact. In addition, these planning methods generally do not operate on objects that cannot be directly controlled. In this work, building on a recently proposed framework for energy-based quasi-static manipulation, we propose an approach to manipulation planning by adapting a numerical continuation algorithm to compute the equilibrium manifold (EM), which is implicitly derived from physical laws. By defining a manipulation potential energy function that captures interaction and natural potentials, the numerical continuation approach is integrated with adaptive ordinary differential equations that converge to the EM. This allows discretizing the implicit manifold as a graph with a finite set of equilibria as nodes interconnected by weighted edges defined via a haptic metric. The proposed framework is evaluated with an inverted pendulum task, where the explored branch of the manifold demonstrates effectiveness.

Leonurus cardiaca is a perennial mint species with a long history of use as a medicinal herb. It produces a wide variety of phytochemicals with pharmacological properties that are used to treat anxiety and sleep disorders, cardiac disorders, and to reduce inflammation. Surprisingly, scant information is available concerning its seed germination ecology. Hence, this study investigated the presence/kind of seed dormancy and the effects of several environmental factors on seed germination and seedling emergence. Seeds were collected from three populations, and they were subjected to germination and seedling emergence experiments in which environmental factors, including temperature, light, cold stratification, pH, osmotic stress, and depth of burial, were manipulated. Non-stratified seeds germinated over a range of alternating temperature regimes from 20/10 to 30/20°C, but they did not germinate at 15/5°C. Optimum germination occurred between 25/15 and 30/20°C. The presence or absence of light did not affect germination. Cold stratification at 4°C enhanced germination at the two coolest temperature regimes. Seed germination occurred over a solution pH range of 5–10 and exceeded 55% in buffer solutions with pH 6–10. Low levels of osmotic stress reduced germination; only 3–8% of seeds germinated at −0.2 MPa. Maximum seedling emergence occurred when seeds were placed on the soil surface, and emergence decreased with increased burial depths to 5 cm. Overall, seeds exhibited germination characteristics associated with type 2 non-deep physiological dormancy at maturity. Seeds primarily germinated at incubation temperatures of ≥ 25/15°C; however, conditionally dormant seeds became nondormant after prolonged exposure to cold stratification.

We collected data on every tenure-track (TT) faculty member in the 122 PhD-granting political science departments in the United States to identify which graduate programs place faculty members in our discipline’s research universities. The top 20% of departments produced 75% of all faculty and the bottom 50% accounted for less than 5% of all TT faculty members at a research university. Forty-nine programs did not have a single graduate placed in a TT position at a PhD-granting department in the past 10 years, and 18 programs did not have a single graduate in a TT position at a PhD-granting department at all. The overwhelming majority of TT faculty members are at a lower or equally ranked department. The results have important implications for prospective graduate students and the future of our discipline.

This study investigates the development of narrative skills in Catalan-Spanish bilingual children, a rarely studied combination of languages in a bilingual context where neither language serves as a minority input, meaning both are widely used in the community. Seventy children aged 4 to 7 were assessed in both of their languages using the Multilingual Instrument Assessment of Narratives. The effects of language, age, and exposure on narrative macrostructure and microstructure were examined. Results indicate that both age and language influence these levels, while exposure affects specific microstructural measures (grammaticality, discourse markers, and code-switching). Certain aspects of narrative performance, such as comprehension questions, lexical diversity, MLCU, and subordination, develop in only one language, while others, including all other macrostructural measures, narrative length, MLCUmax, and code-switching, develop in both. Interestingly, children perform better in macrostructural aspects when narrating in Spanish, despite being schooled in Catalan and regardless of language exposure. However, in microstructural aspects, children show a disadvantage in grammatical accuracy in Spanish. These findings highlight the importance of considering age, exposure, and language of production when assessing language in bilinguals. The study contributes information on narrative development in Catalan-Spanish bilingual children, offering insights for assessment practices in bilingual populations.

The turbulent boundary layer is a region where both preferential dissipation of energy and the production of significant vorticity arises as a consequence of the strong velocity gradients. Previous work has shown that, following a Reynolds decomposition, the purely fluctuating component of the enstrophy production is the dominant term. Near the wall this varies in a complex manner with height. In this study, we additionally decompose the strain rate and vorticity terms into normal and non-normal components using a Schur decomposition and are able to explain all these features in terms of contributions at different heights from constituents involving different combinations of normal and non-normal quantities. What is surprising about our results is that, while the mean shear and the action of larger-scale structures should mean that non-normal effects are of over-riding importance at the wall, the most important individual term involves the fluctuating normal strain rate in the transverse direction. In part, this is because of a strong correlation between this term and the non-normal vorticity with a transverse axis, but it is also the case that individual components of the purely non-normal enstrophy production are negative in the mean. Hence, a local strain rate that is orthogonal to the direction of the dominant mean and fluctuating shear plays a crucial role in amplifying vorticity that is yet to have developed a local component. These conclusions support the emphasis in the control literature on the transverse velocity components at the wall.