The development of L2 utterance fluency has been extensively researched, whereas that of cognitive fluency has rarely been examined. This study investigated the longitudinal development of L2 utterance and cognitive fluency and their relationship. Thirty-one Chinese learners of English completed speaking tasks and a set of tasks for cognitive fluency before and after 5 months’ study abroad. The results showed that participants made a significant improvement in mean syllable duration, end-clause pause frequency, and the speed of syntactic encoding and articulation but not in mid-clause pause frequency or lexical retrieval speed. Mixed-effects modeling confirmed a significant relationship between syntactic encoding speed and mean syllable duration and mid-clause pausing. Furthermore, the significant relationships were maintained over time. The findings highlight (a) the differences between mid-clause and end-clause pausing in terms of their developmental patterns and relationship with cognitive fluency and (b) a significant role of syntactic encoding speed in L2 utterance fluency.

Tissues form from collections of cells that interact together mechanically via cell-to-cell adhesion, mediated by transmembrane cell adhesion molecules. Under a sufficiently large amount of induced stress, these tissues can undergo elastic deformation in the direction of tension, where they then elongate without any topological changes, and experience plastic deformation within the tissue. In this work, we present a novel mathematical model describing the deformation of cells, where tissues are elongated in a controlled manner. In doing so, the cells are able to undergo remodelling through elastic and then plastic deformation, in accordance with experimental observation. Our model describes bistable sizes of a cell that actively deform under stress to elongate the cell. In the absence of remodelling, the model reduces to the standard linear interaction model. In the presence of instant remodelling, we provide a bifurcation analysis to describe the existence of the bistable cell sizes. In the case of general remodelling, we show numerically that cells within a tissue may populate both the initial and elongated cell sizes, following a sufficiently large degree of stress.

The politics of our post-Covid times are expressed through various registers. In Kolkata, one especially powerful artistic medium for such expressions was the revival of street theatre as young and senior theatre practitioners plunged into exploring critical issues that have been all-pervasive since the beginning of the pandemic. As people finally started to venture out, content to be amidst human congregations, street plays, being located in open-air spaces, proved both economical and safe. The issues these street performances highlighted and their modes of presentations could be described as what Tony Fisher calls ‘activist theatre’ – which mobilizes the people by interpellating its audience around a specific grievance or issue that possesses an emotional appeal.1 These performances are a form of artistic activism, or ‘artivism’ as termed by Chantal Mouffe: the use of aesthetic means for political activism, ‘as a counter-hegemonic move against the capitalist appropriation of aesthetics’.2

In a recent series of papers, Poll and Schumann have been developing a simple model for estimating fuel burn for turbofan powered, civil transport aircraft for a given mass, Mach number and flight level and in a specified ambient temperature profile for all phases of flight. This paper focuses upon the combination of Mach number and flight level at which an aircraft cruises with the absolute minimum fuel burn. For a given aircraft type, the information necessary to determine these conditions must be specified and this poses a challenge. An initial attempt to obtain these data has been described previously by the first author. In this paper, the optimum conditions are found using a completely different approach. Starting from first principles and using established theory, the equations governing the situation where engine overall efficiency and airframe lift-to-drag ratio both have local maxima at the same flight condition are developed. This special case is termed the “design optimum” condition and, for a specified aircraft mass and a specified atmospheric temperature versus pressure profile, it gives the lowest possible fuel burn for any aircraft and engine combination. The design optimum occurs at a particular Mach number and Reynolds number, and it is a fixed characteristic of the aircraft. The analysis reveals the significance of Reynolds number variations, wave drag, including its derivatives with respect to both lift coefficient and Mach number, and the atmospheric properties. Whilst wave drag is notoriously difficult to determine accurately, it is found that solutions to the equations are not particularly sensitive to the accuracy of this quantity. Consequently, a simple, physically realistic model can give good results. An appropriate model is developed and a complete, approximate solution is obtained. Taking the International Standard Atmosphere as the design atmosphere, results are presented for the 53 aircraft types previously considered by Poll and Schumann. Relative to the design optimum conditions, when Reynolds number is constant and wave drag is zero, compressibility alone reduces L/D by about 5%, reduces lift coefficient by about 1.5% and increases drag coefficient by about 3.5%. Reynolds number variation has little effect upon L/D, but it reduces lift coefficient and drag coefficient by a further 7% and 8% respectively. The reduction in lift coefficient has a significant impact on the optimum cruise flight level.

In general, an aircraft’s operating optimum will not coincide with its design optimum, but deviations are expected to be small. Therefore, using the design optimum solution as a reference point, an improved version of the operating optimum estimation method described by Poll and Schumann in previous work is developed. This allows the estimation of the conditions for absolute minimum fuel burn for an aircraft of given mass flying thorough any atmosphere. Updated coefficients for the 53 aircraft types are given.

‘The Sequence on the Virgin Mary and Christ’, by the poet and martyr St Robert Southwell, S.J. (1561–95), is a beautiful work that is generally still undervalued. The sequence explores the physical, moral, and emotional unity of Mary and her Son in the work of our salvation. The larger context is the Protestant devaluing of hyperdulia. In its historical moment – it was written sometime in the 1580s – it is a subtle exploration of the theme of kenosis and of what a ‘prince’ or ‘queen’ should really be. While being relatively inexplicit, Southwell seems to poise the Virgin Mary against that other ‘empress’, Elizabeth I, and writes with intimacy from the perspective of his own self-understanding as ‘Beatae Virginis filius’ (a son of the Blessed Virgin). The sequence’s modern, editorial title needs to be replaced with one that matches its devotional aims and content. As he faced up to the almost certain prospect of his own martyrdom, Southwell looked to Mary as true mother and queen to sustain him in his sacrifice.

This research was carried out in north-central Poland, which was occupied by the ice sheet of the Saalian (Marine Isotope Stage [MIS] 6) and Upper Stadial of the Weichselian (MIS 2) glaciation. The application of the anisotropy of magnetic susceptibility (AMS) method supported by a digital elevation model (DEM) analysis of the orientation of glacial landforms allowed for the reconstruction of ice-sheet extent and ice movement directions of these two Pleistocene glaciations. The research used an innovative method of collecting AMS till samples from the glacial plateau areas. Based on the research, it was found that during the general recession of the ice sheet of the Saalian glaciation, a previously undescribed glacial transgression occurred, characterized by a different direction of ice-sheet movement. On the basis of detailed geomorphological studies of the area of terminal moraines, previously described in fragments, the maximum extent of the ice sheet during the Weichselian glaciation was clarified. The recession of the ice sheet of the Weichselian glaciation from the area of north-central Poland took place in four regressive or transgressive–regressive stages with variable directions of ice-sheet movement. The results obtained indicate the great potential of the AMS method in paleoenvironmental studies of glaciated areas.

In 2021, the first-ever Ukrainian business and human rights strategy and action plan were approved. Although a positive political shift, the Government-led endevour failed dismally. This piece explores the drafting process and content of the policy in question, its many shortcomings and the possible way forward as business and human rights becomes even more pressing matter in times of war and in post-conflict context.

Historic species records of the families Onuphidae and Eunicidae, from the Falkland Islands region, are reviewed and updated, new records added from intertidal and nearshore localities on and around the Falkland Islands, and a new species of Hyalinoecia described. Eight genera are reported from around the region including eight taxa of Onuphidae and two of Eunicidae, although most are only known from deep offshore waters. Kinbergonuphis dorsalis is re-described from type material, Kinbergonuphis sp. from the Falkland Islands is described and discrepancies between the two descriptions are examined. Hyalinoecia falklandica sp. nov. is described and the history of the genus and its misidentification in the region is discussed. The new species is distinguished from all other species in the genus through a combination of simple, unidentate falcigers on chaetigers 1 and 2, ventral cirri present to chaetigers 3 or 4, and branchiae present from chaetigers 26 or 27 to the end of the body. The historic record of Marphysa aenea from the Falkland Islands is also shown to be a misidentification and the actual, as-yet-undetermined species present is described. Problems surrounding a correct identification of Marphysa species, other species that do not quite fit current descriptions, and additional Eunicoidea taxa that might be expected to occur in the region are also discussed.

We show that perfectoidization can be (almost) calculated by using p-root closure in certain cases, including the semiperfectoid case. To do this, we focus on the universality of perfectoidizations and uniform completions, as well as the p-root closed property of integral perfectoid rings. Through this calculation, we establish a connection between a classical closure operation “p-root closure” used by Roberts in mixed characteristic commutative algebra and a more recent concept of “perfectoidization” introduced by Bhatt and Scholze in their theory of prismatic cohomology.

Previous research on audiovisual input attests to a significant effect of on-screen text and proficiency on learning gains. However, there is scarce research on whether these factors affect viewers’ feeling of learning, a variable that can affect overall second language (L2) learning outcomes (Ellis, 2008). Moreover, there is a lack of research exploring whether viewing experience prompts viewers to switch from one viewing mode (subtitles, captions, no on-screen text) to another and what factors affect those choices. This study explores learners’ perspectives on learning from audiovisual input and their preferred viewing mode before and after participating in a prolonged viewing intervention. A total of 136 participants of varying L2 English proficiency levels (from A1 to C2) completed pre-viewing and post-viewing questionnaires. The results show that vocabulary and expressions were perceived to be learnt the most. The elementary proficiency group were more likely to be positive about learning from the intervention than higher proficiency students. Concerning the preferred viewing mode outside of the classroom, the participants favoured no on-screen text or first language (L1) subtitles over L2 captions. At the end of the intervention, the elementary-level participants found that viewing without any L1 support was too challenging for leisure viewing, while the intermediate- and advanced-level students gained confidence in watching without any textual support.

The final intonation in French wh-in-situ questions is subject to much debate. Although a wide variety of final pitch movements has been observed, recent studies generally agree on a tendency for final rises. In our study, we analysed the answered wh-in-situ questions (e.g. Tu veux savoir quoi ? – Tout ! ‘What do you want to know? – Everything!’) in a corpus of eleven audio books.

For our analysis, we used perceptual classifications by three annotators. Annotations included not only the perception of final intonational movement (‘rise’/‘fall’/‘plateau’), but also string-related (wh-lexeme; ‘wh-word final’/‘wh-word non-final’) and pragmatic (‘information-seeking’/‘non-information-seeking’; ‘hierarchical’/‘non-hierarchical’) features.

Our results show that a) even string-identical wh-in-situ questions can be pronounced with rises as well as falls and b) pragmatics affect the final pitch movement. If the speaker is hierarchically superior to the hearer, rises are less likely, and questions that are answered by the same speaker are even associated with a non-rising default. However, our data also suggest that pragmatic functions cannot be directly mapped to pitch movement. Information-seeking questions can be pronounced with all three final intonations and speakers may even choose opposite patterns for the same interrogative in the same context.

Parents’ responses to their children’s negative emotions are a central aspect of emotion socialization that have well-established associations with the development of psychopathology. Yet research is lacking on potential bidirectional associations between parental responses and youth symptoms that may unfold over time. Further, additional research is needed on sociocultural factors that may be related to the trajectories of these constructs. In this study, we examined associations between trajectories of parental responses to negative emotions and adolescent internalizing symptoms and the potential role of youth sex and racial identity. Adolescents and caregivers (N = 256) completed six assessments that spanned adolescent ages 13–18 years. Multivariate growth models revealed that adolescents with higher internalizing symptoms at baseline experienced increasingly non-supportive parental responses over time (punitive and distress responses). By contrast, parental responses did not predict initial levels of or changes in internalizing symptoms. Parents of Black youth reported higher minimization and emotion-focused responses and lower distress responses compared to parents of White youth. We found minimal evidence for sex differences in parental responses. Internalizing symptoms in early adolescence had enduring effects on parental responses to distress, suggesting that adolescents may play an active role in shaping their emotion socialization developmental context.