Semantic extensibility captures the semantic side of productivity. It is the likelihood that a given sense of a linguistic expression will support extension to new senses. Even though linguistic expressions are naturally polysemous, semantic extensibility is constrained. In previous literature, it has been argued that semantic extensions are motivated by mostly one-directional conceptual operations such as metaphor and metonymy, and that in any polysemous expression only one or a few so-called ‘sanctioning’ senses have privileged status in supporting new extensions. One factor believed to determine sanctioning status is high frequency. Drawing on three case studies from the history of English, involving change in the adjective awful, the preposition and adverb about and the multifunctional item so, this article provides diachronic evidence from semantic loss to support this view. On the one hand, it is shown that when old sanctioning senses go into decline, this also impacts the senses derived from them, underscoring the motivational relations that tie extended senses to sanctioning senses. On the other hand, what typically initiates a decline in a sanctioning sense is a frequency increase elsewhere in the polysemy network coincident with the emergence of a new sanctioning sense, underscoring the role of frequency in determining sanctioning status and the directionality of sanctioning relations.

In this paper, we investigate the relation between head movement and the synthesis-periphrasis distinction in the verbal domain. We use the term synthesis to refer to verbal expressions in which the lexical verb bears all the verbal inflection in a clause (e.g. rode in English). In contrast, a periphrastic verbal expression additionally contains an auxiliary verb (specifically, be or have), and verbal inflection is distributed between the lexical verb and the auxiliary (e.g. had ridden). We argue for two crosslinguistic generalizations: AfTonomy and *V-Aux. According to AfTonomy, affixal Ts vary as to whether they are in a head movement relation with a verb. *V-Aux states that in periphrasis, the lexical verb and the auxiliary cannot be related by head movement. Existing analyses of periphrasis can account for one or the other generalization, but not for both. We further argue that this tension between the two generalizations is resolved if we adopt the hypothesis that both head movement and periphrasis are tied to selection. More specifically, we propose that head movement is parasitic on a selectional relation (following Svenonius 1994, Julien 2002, Matushansky 2006, Pietraszko 2017, Preminger 2019) and that auxiliaries are merged as specifiers selected by functional heads such as T (Pietraszko 2017, 2023).

In this article, we revisit the notion of some hyperbolicity introduced by Pujals and Sambarino [A sufficient condition for robustly minimal foliations. Ergod. Th. & Dynam. Sys. 26(1) (2006), 281–289]. We present a more general definition that, in particular, can be applied to the symplectic context (something that was not possible for the previous one). As an application, we construct $C^1$ robustly transitive derived from Anosov diffeomorphisms with mixed behaviour on centre leaves.

In the recent case of Ezuame Mannan v Attorney General and Speaker of Parliament,1the Ghanaian Supreme Court in a 5-4 decision struck down the Narcotics Control Commission Act, 2020 (Act 1019), on grounds that the parliamentary processes leading to its enactment were unconstitutional. In arriving at this decision, the court strived to define the limits of Parliament’s legislative powers. While some clarity was achieved, difficult contradictions emerged. Prominent among these was the extent to which the constitutional power of judicial review over legislative actions should interfere with the autonomy of Parliament. In this article, I propose that a proper understanding and application of the purposive approach to interpretation offers an effective tool for reconciling these seemingly conflicting constitutional values.

The aerodynamic performance of an ultra-high aspect ratio strut-braced wing design is assessed for flight at cruise. The sensitivity of a selected airframe design from a recent CleanSky2 project to operating conditions around the design point is quantified using the adaptive-cut high-dimensional model representation (HDMR) method, which allows for the decomposition of the parameter space into smaller subdomains to isolate the parameter interactions and influence on the aerodynamic forces. A comparative analysis with a cantilever wing configuration is performed to identify the role of the strut on the sensitivity of the design. Insight into the transonic performance is gained by characterisation of buffet limits and drag rise. Results show that, for the selected optimised airframe configuration, small changes in freestream parameters can lead to significant reduction in performance due to drag divergence triggered by the shock wave generated at the strut-wing junction and at the fuselage-strut intersection. Cruise conditions can be achieved without buffet onset throughout much of the parameter space. Safety margins associated with buffeting are satisfied, but sensible limits are imposed on the flight envelope for this configuration.

The gastrointestinal microbiota of mammals plays a crucial role in host health, influencing nutrient absorption, lipid metabolism, and immune system regulation. This study examines the current state of research on gut microbiota in pinnipeds and cetaceans, significant indicators of ocean health. To this end, a bibliometric and an in-depth analysis was conducted using the Scopus database. A total of 83 articles published between 1994 and 2023 were found on this topic. In this period, publications showed a 6.9% annual increase, reflecting a growing interest in this field. The USA and China lead in research output, reflecting their high investment in research funding. Study topics were classified in characterization, characterization and comparison, bacterial isolation, and others. Regarding the origin of the samples, faecal samples predominated over gastrointestinal tissues and oral swabs. The most abundant bacterial phyla were Firmicutes, Proteobacteria, Fusobacteria, and Bacterioidetes. The research also highlights the presence of pathogenic bacteria underscoring the need to better understand the health implications for these species. The analysis also reveals that studies focus on a few species, such as Phoca vitulina (Harbor seal) and Tursiops truncatus (Bottlenose dolphin), reflecting a bias towards more accessible and studied species. To advance in this area, it is recommended to broaden the range of species and countries studied, improve sampling methodologies, and foster international collaborations. Research on marine mammal gut microbiota remains an expanding field, offering significant insights into the biology and ecology of these animals.

Micro-UAV systems used for metric purposes are highly capable of capturing relatively high-resolution, chromatically stable aerial images at low altitudes. In micro-UAV-based aerial imaging-based structure-from-motion (a-SfM) applications, the flight mission planning problem can be customised to achieve different objectives. The requirement for minimising the time spent in the air, which is crucial for energy conservation, can be achieved by designing the shortest possible flight path. Spatial resolution in the captured aerial images can be significantly preserved by maintaining the ground sampling distance (GSD) value within a 95${\rm{\% }}$ confidence interval throughout the flight path. Fuel efficiency can be improved by minimising the number of turning manoeuvers required to follow the flight path during the flying mission. In this paper, four distinct flight mission planning processes are delineated to enable the energy-efficient and effective implementation of aerial imaging missions, with their associated parameters optimised using the colony-based search algorithm (CSA). The obtained experimental results demonstrate that the proposed flight mission planning processes are highly successful in the energy-efficient and effective execution of aerial imaging missions.