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This paper proposes a nonparametric approach to identify and estimate the generalized additive model with a flexible additive structure and with possibly discrete variables when the link function is unknown. Our approach allows for a flexible additive structure which provides applied researchers the flexibility to specify their model according to economic theory or practical experience. Motivated by the concerns from empirical research, our method also allows for multiple discrete variables in the covariates. By transforming our model into a generalized additive model with univariate component functions, our identification and estimation thereby follows a procedure adapted from the case with univariate components. The estimators converge to normal distributions in large sample with a one-dimensional convergence rate for the link function and a $d_k$-dimensional convergence rate for the component function $f_k(\cdot )$ defined on ${\mathbb R}^{d_k}$ for all k.
This study investigates the linkages between changes in agricultural land use and population growth in India. We have employed long-term time series and a panel dataset of 1869 samples (267 districts × 7 time points from 1961 to 2021) to determine this. We theorize that there is an inverted “U-shape” relationship between changes in population growth and agricultural land. Our findings suggest a positive impact of population growth on the change in cultivated land. However, this relationship was not static during 1961–2021. We found a two-stage split relationship with a breakpoint in 1981. Prior to the 1980s, there was a 12% expansion in cultivated land in response to a unit increase in population growth. During the post-1980s, with a unit decline in population growth, there was a 5% reduction in cultivated land. The findings were reaffirmed through several robustness checks: analyses using alternative outcome variables, alternative break points in a segmented regression model, and spatial modeling. From a policy perspective, this study advances the need for the reduction of population growth rate in high-fertility states and the adoption of superior and green technology for agricultural intensification and diversification to stop cropland expansion at the cost of environmental sustainability.
Music entrepreneurs are by nature intrinsically involved in the music industry due to lifestyle and business reasons. This study investigates the use of lifestyle entrepreneurship behaviours by taking a gender perspective about how music entrepreneurs develop commercial activities. This includes focusing on how international relationships relate to meaningful music entrepreneurial experience based on the use of social capital. Drawing on interview data from 12 female music entrepreneurs the findings highlight lifestyle identification responses to entrepreneurship as central constituents. Moreover, the study shows how female music entrepreneurs tap into their lifestyle connections based on their gender and social interests. The article contributes to the development of the music, gender, lifestyle, and digital entrepreneurship work by identifying a more interdisciplinary perspective. The practical implications for the music industry evolve around helping more female entrepreneurs break into the sector by harnessing their creative potential.
There is scientific consensus that an earthquake of a magnitude of at least 7 will soon occur on the North Anatolian Fault, which runs south of İstanbul. This earthquake would render one-fifth of İstanbul’s buildings uninhabitable, which means that approximately 200,000 buildings would be expected to suffer moderate or severe damage. As a part of preparedness for the anticipated earthquake, people in İstanbul are invited to have their buildings risk tested. This article, pivoting on cultural anthropology and science and technology studies, investigates how earthquake-proneness of buildings in İstanbul is technically and legally examined and determined. It ethnographically analyzes the risk assessments and demonstrates that the risk is enacted differently through distinctive engineering practices and legal regulations in different networks. When the two different risk assessment processes are examined in İstanbul, a building that is categorized as risky due to its earthquake vulnerability could be regarded as sturdy in the other assessment.
Depression is transmitted within families, but the mechanisms involved in such transmission are not clearly defined. A potential marker of familial risk is the neural response to errors, which may play a role in depression symptoms and is known to be partially heritable. Here, 97 mother-daughter dyads completed a Flanker task while electroencephalography markers of error monitoring were recorded: the error-related negativity (ERN) and response-locked delta and theta power. We assessed whether these measures of neural response to errors 1) were associated with history of recurrent major depressive disorder (MDD) and current depression symptoms among mothers, 2) were correlated among mother-daughter dyads, and 3) were associated with maternal history of recurrent MDD and maternal symptoms of depression among daughters. A history of recurrent MDD was associated with blunted delta and increased theta among mothers. Across mothers, delta and theta were negatively and positively associated, respectively, with current depression symptoms. Mothers’ and daughters’ ERN were positively correlated. Finally, current maternal depression symptoms were negatively associated with delta power in daughters. These results suggest that neural responses to errors may be implicated in the intergenerational transmission of depression. These results also support the relevance of delta oscillations to understanding pathways to depression.
During the fourth millennium BC, public institutions developed at several large settlements across greater Mesopotamia. These are widely acknowledged as the first cities and states, yet surprisingly little is known about their emergence, functioning and demise. Here, the authors present new evidence of public institutions at the site of Shakhi Kora in the lower Sirwan/upper Diyala river valley of north-east Iraq. A sequence of four Late Chalcolithic institutional households precedes population dispersal and the apparent regional rejection of centralised social forms of organisation that were not then revisited for almost 1500 years.
We investigated associations between ‘healthy dietary pattern’ scores, at ages 36, 43, 53 and 60–64 years, and body composition at age 60–64 years among participants from the MRC National Survey of Health and Development (NSHD). Principal component analyses of dietary data (food diaries) at age 60–64 years were used to calculate diet scores (healthy dietary pattern scores) at each age. Higher scores indicated healthier diets (higher consumption of fruit, vegetables and wholegrain bread). Linear regression was used to investigate associations between diet scores at each age and height-adjusted dual-energy X-ray absorptiometry-measured fat and lean mass measures at age 60–64 years. Analyses, adjusting for sex and other potential confounders (age, smoking history, physical activity and occupational class), were implemented among 692 men and women. At age 43, 53 and 60–64 years, higher diet scores were associated with lower fat mass index (FMI) and android:gynoid fat mass ratio; for example, in fully adjusted analyses, a standard deviation (sd) increase in diet score at age 60–64 years was associated with an SD difference in mean FMI of −0·18 (95 % CI: −0·25, −0·10). In conditional analyses, higher diet scores at ages 43, 53 and 60–64 years (than expected from diet scores at younger ages) were associated with lower FMI and android:gynoid fat mass ratio in fully adjusted analyses. Diet scores at age 36 years had weaker associations with the outcomes considered. No associations regarding appendicular lean mass index were robust after full adjustment. This suggests that improvements in diet through adulthood are linked to beneficial effects on adiposity in older age.
Evidence is largely limited regarding the extent to which abnormal behavioural profiles, including physical inactivity, sedentary behaviour and inadequate sleep duration, impact long-term health conditions in individuals with pre-existing depression.
Aims
To investigate the associations between accelerometer-derived daily movement behaviours and mortality in individuals with pre-existing depression.
Method
Between 2013 and 2015, a total of 10 914 individuals with pre-existing depression were identified from the UK Biobank through multiple sources including self-reported symptoms, records of antidepressant usage and diagnostic recording based on the 10th Revision of the International Classification of Diseases (ICD-10) codes F32–F33. These participants were subsequently followed up until 2021. Wrist-worn accelerometers were used for objective measurement of sleep duration, sedentary behaviour, moderate-to-vigorous physical activity (MVPA) and light physical activity (LPA) over a span of seven consecutive days.
Results
During a median follow-up of 6.9 years, 434 deaths occurred among individuals with pre-existing depression. We observed a U-shaped association between sleep duration and mortality in individuals with pre-existing depression, with the lowest risk occurring at approximately 9 h/day. Both MVPA and LPA exhibited an L-shaped pattern in relation to mortality, indicating that engaging in higher levels of physical activity was associated with lower risk of mortality in individuals with pre-existing depression, but the beneficial effect reached a plateau after 50 min/day for MVPA and 350 min/day for LPA. We found a positive association between sedentary time and mortality, and the risk apparently increased above 8 h/day. Moreover, substituting 1 hour/day of sedentary time with LPA or MVPA was significantly associated with a 12% (hazard ratio: 0.88, 95% CI: 0.83–0.94) and 24% (hazard ratio: 0.76, 95% CI: 0.61–0.94) lower risk of mortality, respectively.
Conclusions
Our study found the beneficial effect of adequate sleep duration, high levels of physical activity and short sedentary time on risk of mortality among individuals with pre-existing depression.
İstanbul was the only one of the capital cities of the defeated Central Powers to suffer a military occupation for almost five years between 1918 and 1923. The question posed in this Postscript is whether occupied Istanbul resembled cities within the orbit of the British and French empires of the time? The tentative answer we propose is that Istanbul was a cosmopolitan city turned into a colonial outpost of the British and French empires. Within this context, aspects of the cultural life of Istanbul took on a number of political colourations, examined by the authors whose essays precede the Postscript.
We solve the non-discounted, finite-horizon optimal stopping problem of a Gauss–Markov bridge by using a time-space transformation approach. The associated optimal stopping boundary is proved to be Lipschitz continuous on any closed interval that excludes the horizon, and it is characterized by the unique solution of an integral equation. A Picard iteration algorithm is discussed and implemented to exemplify the numerical computation and geometry of the optimal stopping boundary for some illustrative cases.
The ocellated shrimp goby, Tomiyamichthys russus was recorded from peninsular India based on a single specimen from Royapuram Fishing Harbour (13°07′24.49′′ N; 80°17′52.20′′E), Chennai, Southeast coast of India. The specimen was identified as the ocellated shrimp goby, T. russus by identification characteristics such as crosswise rows of small orange spots surrounded by minute dull black circles in the post-orbital and pre-dorsal region; posterior area of the gill membrane orange; operculum with pale violet traces. The morphometric characteristics were compared with the previous reports of ocellated shrimp goby. The present finding is the documentation of rare ocellated shrimp goby from the peninsular Indian coast.
This report outlines a 9-year-old Thai boy with acute myocarditis due to rhinovirus infection, manifesting complete heart block. Despite aggressive treatment, including pulse methylprednisolone and temporary pacing, his condition remained unstable. He gradually improved over five days in the paediatric cardiac ICU and continued recovery over six months. This underscores the need for comprehensive treatment and follow-up in paediatric myocarditis.
In 2005, Enzo Traverso argued that a very problematic trend was affecting German memory culture and scholarship about Nazism. Echoing an alarm raised earlier by Timothy Mason, the scholar contended that at least since the 1980s there had been a progressive ‘disparition de la notion de “fascism” du champ historiographique’ (disappearance of the concept of ‘fascism’ from historiography) (p.94). The phenomenon observed by Traverso has found concrete materialisation in the EU's politics of memory developed throughout the twenty-first century. As Filippo Focardi argues in his work Nel cantiere della memoria (2020), the EU memory discourse has been shaped around a totalitarian paradigm centred on the memorialisation of Nazi and Communist crimes, in which the notion of a general form of fascism finds little space, and Italian Fascism only exists as a marginal epiphenomenon. This situation has begun to change in recent years as the growing success of far-right movements across the globe has brought international attention to the concept of fascism. Many Italian scholars, who have never ceased to study fascism, are now directing their efforts towards the international arena to contribute to a discussion that seems to have acquired particular significance for the understanding of our time.
This article discusses illusions of ‘three hands’ in the circle of Joachim and the Mendelssohns, arguing that manifestations of ‘three hands’ at play created an aesthetic both in dialogue with the Golden Age of Virtuosity, and going beyond it. Though techniques alluding to three hands or multiple performing bodies diminished sharply in popularity after 1830–50, violin and piano music from the later nineteenth and twentieth centuries remained highly virtuosic and often ‘unplayable’ in other ways. The difference between before and after the half-century mark is that later examples tended not to celebrate so overtly such special effects, because doing so would revive the no-longer-tenable principle of ‘virtuosity as a reward in itself’. Rather, double-stop harmonics, left-hand pizzicato, three-hand techniques and their related sleights of hand were largely escorted off the stage into a pedagogical realm. As this article shows, Joachim helped to exorcise the spectre of Paganini, and to sweep effectively out the door the residual confetti of the Golden Age of Virtuosity. Following in the footsteps of Mendelssohn, Joachim did so with Clara Schumann, viewing himself, Clara Schumann (and, we might add, Brahms) as a cohort of artists seeking to reverse the tawdry display of virtuosity. It was precisely Joachim's acute historicist perception, solidified during the 1850s, that allowed his musical aesthetics to turn so sharply from his openness to, tolerance and acceptance of dazzling violinistic tricks in the 1840s, to their absolute rejection in his later career.
Net zero as a policy for reducing atmospheric carbon emissions is relatively straightforward; however, the implementation of that policy is not, particularly in difficult-to-measure sectors such as agriculture. As strategies to reduce emissions are explored, multiple uncertainties in measuring these emissions are confronted. In this paper, we use the example of a coffee supply chain in Peru to illustrate the magnitude of potential variability in emissions accounting results, which represent a necessary first step in moving towards net zero. We show that scope boundaries and emissions factors chosen for carbon calculations significantly alter emissions outcomes and can result in discrepancies of over 77 million kg CO2e when scaled to a medium-size coffee trader. Net zero targets and efforts to reduce emissions may be over- or understated depending on subjective decisions that cause significant differences in emissions results. Although framework guidance exists, it is apparent that a greater set of micro-level agreements is needed for calculating the emissions of lesser-studied sectors, such as agricultural supply chains. This process is imperative to focus efforts on reducing emissions and on moving from net zero as a mere policy to action and implementation.