To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure no-reply@cambridge.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
This exploratory qualitative study aimed to evidence how community-based gardening groups can be used to support the psychological, physical and social health of those living with dementia. The views of people living with dementia in the community, care partners and group leaders were sought to better understand the benefits gained from gardening groups, as well as the features of gardening groups that are cited as enabling positive outcomes. Going beyond the existing single-group studies in this area, this research aimed to identify common themes across multiple gardening groups. Semi-structured interviews were conducted with six group leaders, three people living with dementia and ten care partners from seven gardening groups, either in person or remotely. Thematic analysis of the interview transcripts highlighted broad enablers – ‘the garden setting’, ‘features of activities’ and ‘organisational components’ – that were cited as facilitating a range of positive wellbeing outcomes, creating an environment that provides ‘physical and cognitive benefits’, ‘affirmation of identity’, ‘social connection’ and ‘benefits for care partners and others’. The wide-ranging benefits and enablers cited by participants within this research support the use of gardening groups as community-based interventions to reinforce positive psychological, physical and social outcomes for people with dementia. Themes also provide a clear framework for the design, implementation and evaluation of future gardening groups.
Social, familial, and physiological stressors may put maternal-infant bonding at risk. Therefore, it is plausible that the stressful conditions brought on by COVID-19 could influence maternal-infant bonding. This study aimed to elucidate the contribution of COVID-19-related experience to variance in maternal-infant bonding, beyond that of established risk factors and as moderated by social support.
Methods:
This longitudinal, multicenter study examined the relationship of demographic and obstetric variables, social support, postpartum depression, as well as COVID-19-related fear, exposure, and subjective difficulty with mother-infant bonding six months following birth. Participants (N = 246) were women who delivered during the pandemics’ strict lockdown period and were recruited 10 weeks after a liveborn delivery and followed up six months later.
Results:
Relationship between fear of COVID-19 and maternal-infant bonding was moderated by social support: Amongst mothers with high levels of social support, fear of COVID-19 negatively predicted bonding.
Discussion:
Results indicate that social support, while overall a protective factor for mother-infant bonding, may lose its buffering effect when fear of COVID-19 is high. This relationship was maintained even when early bonding experiences such as forced separation and the risk incurred by postpartum depression were accounted for. Implications for providers are discussed.
This essay has two objectives. First, it acknowledges and situates the contribution of Ethel Ann Burton-Brown (1868–1927) to the history of the archaeology of the Roman Forum as it was excavated between 1898 and 1905 under the direction of Giacomo Boni (1859–1925). Her English-language handbook on the discoveries, now overlooked in literature on Boni, showcased her education at Girton College, her experience with traditional cultures such as those of northern India, and her understanding of established and newly emerging methods of classical archaeology. Unlike Esther van Deman and Eugénie Sellers Strong, who embraced careers in archaeology just years after Burton-Brown's publication, she did not pursue working in the discipline because of her personal situation. Secondly, it investigates the manner in which Burton-Brown received Boni's presentation of the excavations. Trained as an architect and experienced in architectural restoration, Boni brought innovative scientific methods to the task of uncovering Rome's archaic past. He did so while deliberately distancing himself from those scholars before him who applied traditional academic approaches, i.e., those reliant on classical literature, to archaeological practice. In large part, Burton-Brown's handbook echoes the descriptions and analyses of Boni's finds in the Roman Forum. However, a closer reading of her text reveals that her personal experiences shaped some of her explanations of the archaeological past in ways that differed from Boni's. In addition, their respective nationalities, British versus Italian, shade how they each value Rome's early history.
This article explores the temporalities experienced by persons aged 70 years and over during the first months of the COVID-19 pandemic in Finland. Although the temporalities of the pandemic have been analysed from multiple perspectives, we contribute to this line of research in two ways. First, we show how deeply the pandemic affected older people's experiences of temporality. Second, we further develop the concept of forced present to highlight the consequences that the restriction measures had on older persons’ situations and perceptions of temporality. More specifically, we asked the following question: How did older people perceive time (past, present and future) during the pandemic? We used thematic analysis to examine a dataset consisting of written letters (N = 77) collected between April and June 2020. The findings showed that social isolation forced older people to live in the present without being able to plan their near future because they had no knowledge of when they would be ‘free’ again, which made some participants feel anxious and depressed. Furthermore, we found that the present became intertwined with the personal past as well as with the collective past, as evidenced by participants’ descriptions of war, previous pandemics and hardships. This article deepens our understanding of older people's everyday lives during the pandemic and highlights the problematic nature of social isolation of older people as a safety measure. Overall, this article reveals the particularity of older people's experiences in unequal pandemic times and the ageism inherent in the restriction measures.
As we theorize about philosophy of language that bears on social and political issues, it is worth revisiting the methodological question of how we as theorists rely on our philosophical and linguistic intuitions, and what assumptions underlie our justification of such a reliance. Two threads in the philosophical literature are relevant to this question: the discussion of situatedness in feminist epistemology and the debate about philosophical expertise and philosophical intuitions. I argue that philosophers examining social and political philosophy of language should be careful—perhaps more careful than we have been—when we rely on our intuitions to draw conclusions about socially significant language, such as racist, sexist, homophobic, and other derogatory speech. I don’t claim we should give up relying on our intuitions. Instead, I argue that we should be more explicit that our intuitions are limited, and open to the possibility that they might not align with the intuitions of those who have more experience with the kinds of speech we are analyzing. As a result, we might find that the conclusions we draw from our intuitions have to be revised or qualified.
In this paper, an online adaptive super twisting sliding mode controller is proposed for a non-linear system. The adaptive controller has been designed in order to deal with the unknown dynamic uncertainties and give the best trajectory tracking. The adaptation is based on an optimal Particle Swarm Optimization (PSO) algorithm whose goal is online tuning the parameters through focusing on decreasing the objective function. The novelty of this study is online handling parameters setting in the conventional super twisting algorithm, bypass heavy offline calculation, and also avoid the instability and abrupt changing of the controller’s parameters for better actuators lifetime. This novel approach has been applied on an upper limb exoskeleton robot for arm rehabilitation. Despite the changes of the dynamic model of the system which defers from one patient to another due to the direct interactions between the wearer and the exoskeleton, this control technique preserves its robustness with respect to bounded external disturbances. The effectiveness of the proposed adaptive controller has been proved in simulation and then in real-time experiment with two human subjects. A comparison between the proposed approach and classic super twisting algorithm has been conducted. The obtained results show the performance and efficiency of the proposed controller.
The lithium sodium borosilicate jadarite, LiNaSiB3O7(OH), was first identified in 2007 in the Jadar basin, Serbia, where it forms the principal ore mineral of one of Europe's largest Li deposits. We report the successful application of the dry-gel conversion technique (DGC) to synthesise a jadarite analogue, via a dry-gel precursor made using sol-gel synthesis and the inclusion of the structure directing agent tetraethylammonium hydroxide (TEAOH). Pawley refinement of powder X-ray diffraction (PXRD) data collected on the synthetic sample was carried out using a monoclinic unit cell in space group P21/c (Whitfield et al., 2007), and gave refined unit cell parameters of a = 6.824(3) Å, b = 13.882(5) Å, c = 7.735(3) Å and β = 124.37(1)° (Rwp = 9.22). Inductively-coupled plasma optical emission spectroscopy (ICP–OES) on the synthetic sample confirmed an empirical formula of Li1.07Na1.40Si0.79B3O7.32(OH), based on three B atoms per formula unit (apfu). The synthetic product was found to be deficient in Si compared to natural jadarite from analysis of PXRD and ICP–OES data. Fourier-transform infrared spectroscopy (FTIR) showed that synthetic jadarite has peaks at 1415 and 1342 cm–1 and between 1180 and 900 cm–1, which are attributed to the presence of trigonal (BO3) and tetrahedral (BO4) borate groups characteristic of the natural jadarite structure, as well as a broad peak at 3441 cm–1 due to the presence of residual TEAOH. Scanning electron microscopy showed similarities in the morphologies between synthetic and natural jadarite particles.
As part of the special issue of Development and Psychopathology honoring the remarkable contributions of Dr Dante Cicchetti, the current paper attempts to describe the recent contributions that a developmental psychopathology perspective has made in understanding the development of alcohol use and alcohol-related problems over the lifespan. The paper also identifies some of the future challenges and research directions. Because the scope of this task far exceeds the confines of a journal length article this paper does not attempt a comprehensive review. Rather, it builds on an earlier review and commentary that was published in Development and Psychopathology in 2013, with a similar goal.)Building on that work and updating its conclusions and suggestions for future directions, the current paper emphasizes findings from the research areas that were identified for further study in 2013 and the findings that have been published since that time.
We prove a Khintchine-type recurrence theorem for pairs of endomorphisms of a countable discrete abelian group. As a special case of the main result, if $\Gamma $ is a countable discrete abelian group, $\varphi , \psi \in \mathrm {End}(\Gamma )$, and $\psi - \varphi $ is an injective endomorphism with finite index image, then for any ergodic measure-preserving $\Gamma $-system $( X, {\mathcal {X}}, \mu , (T_g)_{g \in \Gamma } )$, any measurable set $A \in {\mathcal {X}}$, and any ${\varepsilon }> 0$, there is a syndetic set of $g \in \Gamma$ such that $\mu ( A \cap T_{\varphi(g)}^{-1} A \cap T_{\psi(g)}^{-1} A ) > \mu(A)^3 - \varepsilon$. This generalizes the main results of Ackelsberg et al [Khintchine-type recurrence for 3-point configurations. Forum Math. Sigma10 (2022), Paper no. e107] and essentially answers a question left open in that paper [Question 1.12; Khintchine-type recurrence for 3-point configurations. Forum Math. Sigma10 (2022), Paper no. e107]. For the group $\Gamma = {\mathbb {Z}}^d$, the result applies to pairs of endomorphisms given by matrices whose difference is non-singular. The key ingredients in the proof are: (1) a recent result obtained jointly with Bergelson and Shalom [Khintchine-type recurrence for 3-point configurations. Forum Math. Sigma10 (2022), Paper no. e107] that says that the relevant ergodic averages are controlled by a characteristic factor closely related to the quasi-affine (or Conze–Lesigne) factor; (2) an extension trick to reduce to systems with well-behaved (with respect to $\varphi $ and $\psi $) discrete spectrum; and (3) a description of Mackey groups associated to quasi-affine cocycles over rotational systems with well-behaved discrete spectrum.
A narrative of decline dominates the ageing process in the Global North. At the same time, older people have shared more positive stories of ageing, particularly with respect to their leisure practices. I explore this tension by drawing on an interview-based study with people playing walking football in the United Kingdom. My contention is that older people express multiple meanings of ageing that disturb deficit-focused cultural scripts of later-life, albeit in ways that can be fraught with tensions and contradictions. First, I explore how older people cultivate an alternate identity departing from assumptions of loneliness and degradation, with walking football providing an opportunity to develop friendships and a sense of belonging. Second, older people emphasise their own (good) health and the embodied demands of walking football, yet in doing so, can reinforce ageist discourses by distinguishing themselves from the inactive and isolated (older) other. Third, older people reflect on their current and future involvement in walking football in positive ways. However, through attending to the temporal character of their experiences, I show how, whilst older people express a desire to continue participation, this is threatened by the realities of their ageing bodies in ways that align with deficit framings of later-life. I conclude by calling for recognising the multiplicity of older people’s experiences and exercising caution about reproducing over-simplistic and sweeping celebrations of ageing.
This article argues that Vitruvius’ description of Julius Caesar's ‘discovery’ of the larch (larix, De arch. 2.9.15–16), previously read as a journalistic account of the author's first-hand experience in Caesar's military entourage, should instead be interpreted as a highly crafted morality tale illustrating human progress thwarted. In the passage, the use of larch wood to construct a defensive tower renders the Alpine fortress at Larignum impregnable to assault by fire; only the fear aroused by siege provokes the inhabitants to surrender to Caesar and his troops (2.9.15–16). Nevertheless, the outcome of this discovery is not a complete victory, because the logistics of importing this remarkable timber to Rome are as yet insurmountable (2.9.16). Once the siege of Larignum is recognized as a diptych to Vitruvius’ narrative of the origins of civilization, in which fire and wood likewise play essential roles (2.1.1–7), and compared with similar aitia and source histories across the De architectura, it becomes clear that Larignum and its resources emblematize obstacles to a Vitruvian conception of imperial success, in which the city of Rome catalogues and indexes architectural knowledge amassed throughout the empire.
Inhibitory control plays an important role in children’s cognitive and socioemotional development, including their psychopathology. It has been established that contextual factors such as socioeconomic status (SES) and parents’ psychopathology are associated with children’s inhibitory control. However, the relations between the neural correlates of inhibitory control and contextual factors have been rarely examined in longitudinal studies. In the present study, we used both event-related potential (ERP) components and time-frequency measures of inhibitory control to evaluate the neural pathways between contextual factors, including prenatal SES and maternal psychopathology, and children’s behavioral and emotional problems in a large sample of children (N = 560; 51.75% females; Mage = 7.13 years; Rangeage = 4–11 years). Results showed that theta power, which was positively predicted by prenatal SES and was negatively related to children’s externalizing problems, mediated the longitudinal and negative relation between them. ERP amplitudes and latencies did not mediate the longitudinal association between prenatal risk factors (i.e., prenatal SES and maternal psychopathology) and children’s internalizing and externalizing problems. Our findings increase our understanding of the neural pathways linking early risk factors to children’s psychopathology.
In this wide-ranging conversation, six scholars of South Africa detail threads of continuity and change in the historiographies, popular memories, archives, research agendas, methodologies, and within the South African academy and historical professional since the end of formal apartheid in 1994.
Dynamic equilibrium models based on present value computation not only imply that returns are predictable but also generate particular short-term patterns of predictability in asset returns. I take advantage of this to construct a set of tests of equilibrium generated predictability (EGP). I apply the tests to document two puzzles: First, option-implied or realized measures of volatility ought to predict returns but do not; and second, the variance risk premium (VRP) predicts returns but only at long horizons. VRP fails the tests of EGP as the term structure of predictable variation is inconsistent with an equilibrium interpretation.
Disparities in CHD outcomes exist across the lifespan. However, less is known about disparities for patients with CHD admitted to neonatal ICU. We sought to identify sociodemographic disparities in neonatal ICU admissions among neonates born with cyanotic CHD.
Materials & Methods:
Annual natality files from the US National Center for Health Statistics for years 2009–2018 were obtained. For each neonate, we identified sex, birthweight, pre-term birth, presence of cyanotic CHD, and neonatal ICU admission at time of birth, as well as maternal age, race, ethnicity, comorbidities/risk factors, trimester at start of prenatal care, educational attainment, and two measures of socio-economic status (Special Supplemental Nutrition Program for Women, Infants, and Children [WIC] status and insurance type). Multivariable logistic regression models were fit to determine the association of maternal socio-economic status with neonatal ICU admission. A covariate for race/ethnicity was then added to each model to determine if race/ethnicity attenuate the relationship between socio-economic status and neonatal ICU admission.
Results:
Of 22,373 neonates born with cyanotic CHD, 77.2% had a neonatal ICU admission. Receipt of WIC benefits was associated with higher odds of neonatal ICU admission (adjusted odds ratio [aOR] 1.20, 95% CI 1.1–1.29, p < 0.01). Neonates born to non-Hispanic Black mothers had increased odds of neonatal ICU admission (aOR 1.20, 95% CI 1.07–1.35, p < 0.01), whereas neonates born to Hispanic mothers were at lower odds of neonatal ICU admission (aOR 0.84, 95% CI 0.76–0.93, p < 0.01).
Conclusion:
Maternal Black race and low socio-economic status are associated with increased risk of neonatal ICU admission for neonates born with cyanotic CHD. Further work is needed to identify the underlying causes of these disparities.
Natural sepiolite has great potential for application in wound healing, haemostasis and medicines. This paper introduces a versatile solid-state sintering technique for preparing sepiolite-based nanocomposites with enhanced antibacterial properties, and the physical, structural, rheological and antibacterial properties of which were determined to be enhanced. The incorporation of nanosized Ag and metal oxides into sepiolite composites results in a notable improvement in their antibacterial efficacy against Escherichia coli and Staphylococcus aureus in comparison to the unmodified sepiolite. With a low silver content of just 5%, the sepiolite–Ag composite achieves an antibacterial rate of ~100%. Furthermore, the rheological properties exhibited by the sepiolite composites are noteworthy, suggesting their suitability for use in wound-dressing applications due to their exceptional workability. The methodology employed in this research has the potential to offer a viable substitute for the production of economical and effective natural antibacterial nanocomposites.
We previously showed in rats that pre- and postnatal deficiencies in iron and omega-3 (n-3) fatty acids can impair bone development, with additive and potentially irreversible effects when combined. This study aimed to investigate, in female rats consuming a combined iron and n-3 fatty acid deficient (ID + n-3 FAD) diet preconception, whether supplementation with iron and docosahexaenoic/eicosapentaenoic acid (DHA/EPA), alone and in combination, can prevent bone impairments in offspring. Using a 2 × 2 factorial design, female Wistar rats consuming an ID + n-3 FAD diet preconception were randomised to receive an: 1) iron supplemented (Fe + n-3 FAD), 2) DHA/EPA supplemented (ID + DHA/EPA), 3) Fe + DHA/EPA, or 4) ID + n-3 FAD diet from gestational day 10 throughout pregnancy and lactation. Post-weaning, offspring (n = 24/group; male:female = 1:1) remained on the respective experimental diets for three weeks until postnatal day 42–45. Offspring born to female rats consuming a control diet preconception and an Fe+DHA/EPA diet throughout pregnancy and lactation served as non-deficient reference group (Control+Fe+DHA/EPA). Bone mineral density (BMD) was measured using dual-energy X-ray absorptiometry and bone strength using three-point bending tests. Only offspring in the Fe+DHA/EPA group had significantly higher spine and femur BMD, and higher femur stiffness than offspring in the ID + n-3 FAD group, and had similar spine BMD and femur stiffness as the Control + Fe + DHA/EPA group. Offspring in the Fe + DHA/EPA group further had significantly higher femur strength (ultimate load) than the other experimental groups, and a similar femur strength as the Control + Fe + DHA/EPA group. This study shows that only combined iron and DHA/EPA supplementation can prevent bone impairments in offspring of female rats consuming an iron and n-3 FA deficient diet preconception.