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Motion primitives play an important role in motion planning for autonomous vehicles, as they effectively address the sampling challenges inherent in nonholonomic motion planning. Employing motion primitives (MPs) is a widely accepted approach in nonholonomic motion planning based on sampling. This study specifically addresses the problem of learning from human-driving data to create human-like trajectories from predefined start-to-end states, which then serve as MP within the sampling-based nonholonomic motion planning framework. In this paper, we propose a deep learning-based method for generating MP that capture human-driving trajectory data features. By processing human-driving trajectory data, we create a Motion Primitive dataset that uniformly covers typical urban driving scenarios. Based on this dataset, a vehicle model long short-term memory neural network model is constructed to learn the features of the human-driving trajectory data. Finally, a framework for the generation of MP for practical applications is given based on this neural network. Our experiments, which focus on the dataset, the MMP generation network, and the generation process, demonstrate that our method significantly improves the training efficacy of the MP generation network. Additionally, the MP generated by our method exhibit higher accuracy compared to traditional methods.
Southwest China is a region that has been perhaps uniquely shaped over the longue durée by mutual appropriations of status, authority, land, material culture, genealogies, and cultural-historical identities. Drawing on both ethnographic fieldwork and the official and unofficial Chinese and Nuosu-Yi textual evidence, in this article I offer a new view of how, during the Ming and Qing dynasties, native officials were shaped by their efforts at appropriating elements of officialdom (responsibility towards the court) and nativeness (adherence to local customs). My historical textual-cum-anthropological analysis builds on C. Patterson Giersch’s notion of the “middle grounds” between the Chinese state and its borderland peoples to reveal “further ways” of uncovering the history of their history. I show that mutual appropriations of officialdom and nativeness have led to specific forms of acculturation that are neither linear nor irreversible. Cultural hybridizations underpin the current Yi core identity and culture in Liangshan today.
In this article I bring Henry James's novella The Turn of the Screw, Benjamin Britten and Myfanwy Piper's opera based on the novella, and elements of the 2011 Glyndebourne production of the opera into interaction with theories of the uncanny to wonder about the act of reading. This novella and opera thematize reading in connection with the uncanny and the ghostly, providing an opportunity to pursue what might be at stake and what might be possible when boundaries blur and meaning is put in motion. I begin to explore uncanny reading as a tool to unsettle binary logics and one-to-one mappings. I consider the uncanny as connective tissue between theoretical makings related to identity, relationships, and the potentialities of fiction. And I put these ideas into interactive practice as I self-consciously read this opera, to connect to and challenge normative and oppressive forces, impulses, and systems, including cultural scripts, social power structures, and ways of knowing and interacting.
Throughout all the domains of life, and even among the co-existing viruses, RNA molecules play key roles in regulating the rates, duration, and intensity of the expression of genetic information. RNA acts at many different levels in playing these roles. Trans-acting regulatory RNAs can modulate the lifetime and translational efficiency of transcripts with which they pair to achieve speedy and highly specific recognition using only a few components. Cis-acting recognition elements, covalent modifications, and changes to the termini of RNA molecules encode signals that impact transcript lifetime, translation efficiency, and other functional aspects. RNA can provide an allosteric function to signal state changes through the binding of small ligands or interactions with other macromolecules. In either cis or trans, RNA can act in conjunction with multi-enzyme assemblies that function in RNA turnover, processing and surveillance for faulty transcripts. These enzymatic machineries have likely evolved independently in diverse life forms but nonetheless share analogous functional roles, implicating the biological importance of cooperative assemblies to meet the exact demands of RNA metabolism. Underpinning all the RNA-mediated processes are two key aspects: specificity, which avoids misrecognition, and speedy action, which confers timely responses to signals. How these processes work and how aberrant RNA species are recognised and responded to by the degradative machines are intriguing puzzles. We review the biophysical basis for these processes. Kinetics of assembly and multivalency of interacting components provide windows of opportunity for recognition and action that are required for the key regulatory events. The thermodynamic irreversibility of RNA-mediated regulation is one emergent feature of biological systems that may help to account for the apparent specificity and optimal rates.
This study investigates the impact of historical and ideological continuities in Turkey’s migration policies on contemporary attitudes toward Syrian refugees. It examines how ethnic homogenization and discrimination, rooted in the foundation of the Turkish Republic, continue to shape public perceptions and policy frameworks. The research is based on qualitative methodologies, including 41 semi-structured in-depth interviews conducted between July and December 2021 with Syrian refugees and Turkish community members residing in Altındağ, Mamak, and Ümitköy districts of Ankara. Participants were purposively selected to provide diverse perspectives on social integration and identity formation. The findings reveal a shift from initial acceptance under religious solidarity to increasing exclusion, driven by nationalist rhetoric. Despite official claims of promoting multiculturalism, Turkish policies and societal attitudes often reinforce prejudices, fostering a socio-political environment where racial and ethnic biases persist.
The magnetostrictive response of a Terfenol-D pellet was measured via a laboratory-based X-ray diffractometer. X-ray diffraction patterns were collected from the pellet sample with and without the presence of an applied magnetic field (~30 mT) generated by placing a large magnet under the pellet. A standard reference material, Silicon 640c, was employed as an internal standard. Magnetostriction values of 323 and 227 ppm Δl/l were determined for the (104) and (110) indexed peaks, respectively, assuming a rhombohedral structure for Terfenol-D. A threshold noise level value of ~20 to 30 ppm Δl/l was suggested based on before/after measurements in the absence of the applied field. No clear evidence of domain wall rotation was detected via changes in relative intensities of diffraction peaks in the presence of the applied magnetic field.
The aim of this paper is to analyze gender differences in the determinants of the gap between actual and desired fertility in Spain. To this aim, we exploit the 2018 Fertility Survey (EF2018) from the Spanish Statistical Institute (INE). A binary probit model shows that gender differences in the risk (and its pattern) of not reaching the desired family size are generally more pronounced amongst parents than amongst childless adults. For women, a high level of education, a potentially unstable employment situation (as an employee in the private sector) and not living with a partner increases the risk of not having the desired number of children. For men, variables related to income instability or low monthly income cause a more pronounced differential between desired and actual parenthood than amongst women, while neither educational level nor partner status – amongst those who are already fathers – significantly influences their probability of not reaching the desired number of children.
This paper explores the intersection of physical health and recovery-oriented approaches in psychosis, offering a unique perspective through autoethnography. By combining personal experience with a broader analysis of existing mental health frameworks, the paper highlights the often overlooked importance of physical health in the recovery process for individuals with psychosis. The autoethnographic narrative reveals the complex challenges posed by antipsychotic medications, including weight gain and metabolic complications, and their impact on overall well-being. It emphasizes the dual stigma of mental health challenges and weight gain, highlighting the need for a more integrated, holistic approach to mental health care. Recommendations include enhanced education for healthcare providers, personalized care plans, and a multidisciplinary approach aimed at bridging the gap between physical and mental health in psychosis recovery.
This study examines biased media portrayals of refugees, focusing on the contrast between Ukrainian and MENA refugees. It proposes a “politics-media cycle of reinforcement” where political agendas influence media narratives, and vice versa. This cycle amplifies racial bias, impacting how refugees are perceived. The research employs a comparative content analysis of Western media and political rhetoric. Findings reveal a stark difference: Ukrainians are seen as deserving victims, while MENA refugees face negative stereotypes. Interviews with media professionals and analysts support these conclusions. The study exposes racialized “othering” that marginalizes specific refugee groups. It confirms a more sympathetic portrayal of Ukrainians, likely due to political and racial factors. This research highlights the need for a more balanced and empathetic approach to all refugees.
We consider the hard-core model on a finite square grid graph with stochastic Glauber dynamics parametrized by the inverse temperature $\beta$. We investigate how the transition between its two maximum-occupancy configurations takes place in the low-temperature regime $\beta \to \infty$ in the case of periodic boundary conditions. The hard-core constraints and the grid symmetry make the structure of the critical configurations for this transition, also known as essential saddles, very rich and complex. We provide a comprehensive geometrical characterization of these configurations that together constitute a bottleneck for the Glauber dynamics in the low-temperature limit. In particular, we develop a novel isoperimetric inequality for hard-core configurations with a fixed number of particles and show how the essential saddles are characterized not only by the number of particles but also their geometry.
We give a criterion for separability of subgroups of certain outer automorphism groups. This answers questions of Hagen and Sisto, by strengthening and generalizing a result of theirs on mapping class groups.
The sutureless repair technique has been favoured due to its purported reduction in post-operative pulmonary venous obstruction rates. This study aims to compare the outcomes of conventional versus sutureless repair techniques in Total Anomalous Pulmonary Venous Drainage.
Methods:
In this retrospective single-centre analysis (2012–2022), we evaluated children who underwent conventional or sutureless repair for isolated total anomalous pulmonary venous drainage, excluding complex cardiac anomalies and incomplete data. Patients were categorised into conventional (Group C, n = 58) and sutureless (Group S, n = 41) groups. Primary outcomes included mortality, morbidity, and post-operative complications. Statistical analysis included Mann–Whitney U, chi-square, and Fisher’s exact tests where appropriate.
Results:
Supracardiac type predominated in both groups (53.4% in Group C and 70.7% in Group S), with higher cardiac type frequency in Group C (24.1% versus 2.4%, p = 0.016). Early complications occurred in 58.5% versus 53.4% of cases in Groups S and C, respectively (p = 0.767). The mortality rate (17.2% versus 14.6%, p = 0.944) and post-operative pulmonary venous obstruction (21.2% versus 19.0%, p = 0.809) were higher in Group C, though not significantly. Mean cardiopulmonary bypass times were comparable between groups (105 versus 89 minutes, p = 0.424).
Conclusions:
In this comprehensive analysis of paediatric Total Anomalous Pulmonary Venous Drainage repair, both conventional and sutureless techniques demonstrated comparable safety profiles and clinical outcomes. These findings suggest that surgical approach selection should be individualised based on patient characteristics and surgeon expertise. Further prospective studies with larger cohorts are needed to validate these observations.
The manuscript is devoted to the boundary behavior of mappings with bounded and finite distortion. We consider mappings of domains of the Euclidean space that satisfy weighted Poletsky inequality. Assume that, the definition domain is finitely connected on its boundary and, in addition, on the set of all points which are pre-images of the cluster set of this boundary. Then the specified mappings have a continuous boundary extension provided that the majorant in the Poletsky inequality satisfies some integral divergence condition, or has a finite mean oscillation at every boundary point.
The Canada-wide Early Learning and Child Care Plan promises to help low-income parents, especially women, participate in the economy. But even under this plan, care will be too expensive for many families. Several provinces offer targeted subsidies to reduce fees—unfortunately, these benefits are often hard to access and their popularity with voters is unclear. Using a pre-registered survey experiment (N=821), this research note investigates support for a hypothetical child care supplement to help low-income families. Overall, we find strong support for such an initiative, but little enthusiasm to pay for it through new income taxes. We then manipulate the ease of accessing this benefit. We find little evidence that burdensome child care benefits are more popular than easily accessible benefits. If anything, burdensome benefits reduce support. We then briefly consider how partisanship influences support. We conclude with timely recommendations for government and discuss the need for accessible child care benefits.
A través del lente de la conciencia jurídica, este trabajo analiza la insatisfacción institucional en el marco de un profundo escepticismo hacia las instituciones formales, particularmente en el contexto de la sociedad chilena post-Octubre de 2019. El artículo busca investigar la relación entre la expresión de una profunda antipatía hacia el estado y la postura que los individuos manifiestan con respecto a la legalidad. El trabajo reporta los hallazgos derivados de 12 grupos focales categorizados por edad, género, y locación. Encontramos que, a pesar de los sentimientos negativos prevalentes que albergan las personas hacia estas instituciones, los participantes continúan usando el lenguaje del derecho, expresando su insatisfacción como derechos formales frustrados o por una falta de aplicación de la ley con respecto a las élites corruptas. Concluimos que la existencia de una brecha entre las expectativas normativas y el agudo rechazo por su incumplimiento por parte de actores institucionales abre una estructura de oportunidades para la emergencia de formas más autoritarias de poder estatal.
We investigate natural variations of behaviourally correct learning and explanatory learning—two learning paradigms studied in algorithmic learning theory—that allow us to “learn” equivalence relations on Polish spaces. We give a characterization of the learnable equivalence relations in terms of their Borel complexity and show that the behaviourally correct and explanatory learnable equivalence relations coincide both in uniform and non-uniform versions of learnability and provide a characterization of the learnable equivalence relations in terms of their Borel complexity. We also show that the set of uniformly learnable equivalence relations is $\boldsymbol {\Pi }^1_1$-complete in the codes and study the learnability of several equivalence relations arising naturally in logic as a case study.
Given a Polish group G, let $E(G)$ be the right coset equivalence relation $G^\omega /c(G)$, where $c(G)$ is the group of all convergent sequences in G. We first established two results:
(1) Let $G,H$ be two Polish groups. If H is TSI but G is not, then $E(G)\not \le _BE(H)$.
(2) Let G be a Polish group. Then the following are equivalent: (a) G is TSI non-archimedean; (b)$E(G)\leq _B E_0^\omega $; and (c) $E(G)\leq _B {\mathbb {R}}^\omega /c_0$. In particular, $E(G)\sim _B E_0^\omega $ iff G is TSI uncountable non-archimedean.
A critical theorem presented in this article is as follows: Let G be a TSI Polish group, and let H be a closed subgroup of the product of a sequence of TSI strongly NSS Polish groups. If $E(G)\le _BE(H)$, then there exists a continuous homomorphism $S:G_0\rightarrow H$ such that $\ker (S)$ is non-archimedean, where $G_0$ is the connected component of the identity of G. The converse holds if G is connected, $S(G)$ is closed in H, and the interval $[0,1]$ can be embedded into H.
As its applications, we prove several Rigid theorems for TSI Lie groups, locally compact Polish groups, separable Banach spaces, and separable Fréchet spaces, respectively.
John Harris has made many seminal contributions to bioethics. Two of these are in the ethics of resource allocation. Firstly, he proposed the “fair innings argument” which was the first sufficientarian approach to distributive justice. Resources should be provided to ensure people have a fair innings—when Harris first wrote this, around 70 years of life, but perhaps now 80. Secondly, Harris famously advanced the egalitarian position in response to utilitarian approaches to allocation (such as maximizing Quality Adjusted Life Years [QALYs]) that what people want is the greatest chance of the longest, best quality life for themselves, and justice requires treating these claims equally. Harris thus proposed both sufficientarian and egalitarian approaches. This chapter compares these approaches with utilitarian and contractualist approaches and provides a methodology for deciding among these (Collective Reflective Equilibrium). This methodology is applied to the allocation of ventilators in the pandemic (as an example) and an ethical algorithm for their deployment created. This paper describes the concept of algorithmic bioethics as a way of addressing pluralism of values and context specificity of moral judgment and policy, and addressing complex ethics.
This study examines how the managerial interpretation of incentive arrangement affects corporate engagement in social areas, as reflected in corporate social performance, from two interrelated perspectives: the political influence view and the normative agency view. Building the theoretical framework on state-owned enterprise (SOE) executives' dual-career tracks perspective, we contend that economic factors (performance decline and relative pay gap) and political factors (socialist imprints and political career horizon) could divergently reshape the interpretation of incentive arrangement on corporate social performance. Using ‘Pay Ceiling Order’ as a quasi-natural experiment context, a secondary analysis, and a controlled experiment reveal that compensation restriction on top executives causes a decrease in corporate social performance. This relationship is weakened when there are stronger socialist imprints inherited by a focal firm and when the executives have a longer political prospect. In contrast, the relationship is strengthened when firms face severe performance declines and when the executives' compensation is relatively lower than peers. The findings show that compensation is an indispensable incentive joining with political and economic factors, enabling SOEs to engage in social areas. We discuss the implications of understanding top executive incentives with incentive arrangements and how the government purpose influences top executive responses to compensation incentive in ways that matter for long-term social value.