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In the era of the competition for the first transatlantic flight at the beginning of the nineteenth century, numerous accidents occurred. Whereas engine failure, bad weather and navigational problems are usually held responsible, the human factor has hardly been addressed.
Methods
In view of current insights, an inventory was made of possible physiologic and otoneurologic factors that could have contributed to failures and accidents.
Results
Extreme fatigue, hyperventilation with vestibular hyperreactivity and airsickness may have played roles. When flying in the dark and in clouds, pilots were subject to spatial disorientation because of vestibulo-visual conflicts and gravitational misinformation. The loudness of the engines was deafening, which may have caused noise-induced vertigo. In some cases, asymptomatic third-window lesions may have become manifest and may have contributed to dizziness.
Conclusion
Accidents and failures in the early days of aviation were not only the result of technical defects. Undoubtedly, human physiology played a role as well.
This article examines the complex dynamics between the intelligentsia and the broader population in the formation of national identity by looking at a case of intra-societal conflict. The article focuses on Western Belarus – the northern portion of the Polish-Soviet frontier in the interwar period – which was historically influenced by Polish, Belarusian, Lithuanian and Ukrainian cultures. In this region, the Belarusian intelligentsia's efforts to promote national enlightenment were initially met with scepticism and even hostility from the broader population. The discrepancy between the intelligentsia's self-perceived role as the nation's vanguard and society's apathy towards issues related to national identity led to internal conflict. Drawing upon Belarusian and Polish archival collections, the Belarusian interwar press and oral history interviews, the article offers an alternative understanding of the challenges associated with the process of nation-building in Eastern Europe in highlighting the often overlooked perspectives of the ordinary people who were at the centre of these intellectual endeavours.
Asian Americans are the fastest growing racial group in the US electorate, yet they are significantly under-represented in political office. How do predominantly immigrant groups like Asian Americans close this representation gap? We build on existing theories of minority representation and immigrant assimilation by highlighting the importance of a group’s political incorporation into American society. We argue that the representation of minority immigrant groups in political office requires social integration and the acquisition of civic resources, processes that can take considerable time. Using new data on Asian American state legislators spanning half a century, we find that immigration in prior decades is associated with greater political representation, while contemporaneous population size has either no independent impact or a negative one. Other indicators of immigrant social integration, including citizenship status, language ability, education, and income, also predict the likelihood of co-racial representation in political office. Our results suggest political representation gaps of immigrant groups narrow over time, though this may be a non-linear process. Our findings also imply that the least integrated members of immigrant groups are the most likely to be affected by representational deficits.
Bollywood films, the highly commercial films by Indian producers for Indian audiences, have always been Hindi-dominant, and despite the increased incorporation of English over time, the speech of urban elite main characters remains Hindi matrix. This is at odds with the code-switching patterns of urban elites in other Indian media, such as chat shows, and spoken conversation, where switching among such speakers is often English dominant. Young urban elites may use English in isolation; their Bollywood equivalents sometimes do so also, but always with standard syntax. In this article we show how for Bollywood films, English without code-switching typically occurs in the speech of anglicised minorities such as Goan Catholics; furthermore, their English is indexed by the morphosyntactic features of Indian English. This contrasts with usage outside film, where Indian English features have been shown to be broadly distributed. This conservatism of Bollywood speech reflects conflicting attitudes towards an endonormative variety of English within India.
After the two world wars, numerous Germans were forcibly removed or fled their homelands in eastern Europe, resettling in Germany. In both postwar periods, the Weimar Republic and the Federal Republic of Germany established compensation systems to indemnify the material losses and damages suffered by these refugees: the Gewaltschädengesetze (Violent Damages Laws) of 1921 and the Lastenausgleichsgesetz (Equalization of Burdens Law) of 1952. The article offers a unique comparative insight into the functioning of the two compensation mechanisms, examining six cases of applicants (or their heirs) who lost their homes twice in their lives and applied for compensation twice: first after the end of the First World War and then following the Second World War. The diachronic comparison reveals the complex nature of German national belonging, the persistence of the term Volksgemeinschaft in modern German history, and the role of class status in the context of compensation after both wars.
On 24 December 1871, Giuseppe Verdi’s opera Aida premiered in Cairo’s Khedivial Opera House. The Khedive of Egypt, Ismail, had commissioned Verdi to compose the opera as part of a larger program of urban renewal that had peaked with the Suez Canal’s inauguration in November 1869. Wide boulevards, landscaped gardens, and luxury hotels of iron, steel, and the improved glass of the nineteenth-century modernized sections of Cairo and Alexandria. In anticipation of the many guests who planned to attend the canal’s inauguration, Ismail funded the construction of a road leading directly from Cairo to the pyramids and patronized the construction of a Khedivial Opera House.1
The anthropic principle (AP) states that “what we can expect to observe must be restricted by the conditions necessary for our presence as observers”. But the phrase “our presence as observers” cannot be uniquely interpreted in the context of the theories within which AP is meant to be understood and applied: namely, for effective theories. We thus describe and defend a reformulation of AP, which we dub the effective observation principle (EOP). EOP describes what we can expect to observe in physical settings by considering our ‘observational situation’ (and not, specifically, ‘observers’)—understood solely in terms of effective theories.
Although research has highlighted that suicidal imagery (SuiMI) and experiential avoidance (EA) are important in understanding suicidality, there is a need to understand how they potentially interact. Previous research has highlighted that EA potentially leads to increased cognitive intrusions, but it not known whether EA leads to increased SuiMI.
Aims:
The purpose of this study was to explore the influence of SuiMI and EA on suicidality (i.e. encompassing thoughts, behaviour and suicide attempts). It was hypothesised that greater frequency of SuiMI would be associated with greater EA. It was also hypothesised that greater SuiMI would be associated with greater suicidality, and that EA would moderate this relationship.
Method:
Hypotheses were tested by surveying 197 general university students who completed self-report measures that assessed suicide-related mental imagery (i.e. Suicidal Imagery Questionnaire, SIQ), experiential avoidance (i.e. Multi-dimensional Experiential Avoidance Questionnaire, MEAQ) and suicidality (i.e. Suicidal Behaviours Questionnaire-Revised, SBQ-R).
Results:
Frequency of SuiMI was positively correlated with the tendency to engage in EA. SuiMI was a significant predictor of both suicidality and EA. Exploratory analysis found that voluntary SuiMI explained greater variance in suicidality than intrusive, involuntary SuiMI, and that SuiMI only predicted EA in low-risk participants and not for those at high risk of suicide. EA did not predict suicidality and it also did not show any moderating effect on the relationship between SuiMI and suicidality.
Conclusion:
There is evidence to suggest that suicide-related mental imagery may play an important role in suicide risk and more specifically imagery that is voluntarily engaged with. Future research is needed to explore the different types of imagery in relation to suicidal ideation in populations at higher risk of suicide.
Zambia has recently witnessed the removal of four High Court judges within a period of less than two years, raising questions about the country’s commitment to judicial independence. This article examines the extent to which the current legal framework governing the removal of judges in Zambia coheres with the principles of judicial accountability and independence. Drawing upon insights from relevant international standards and scholarly literature, the article posits that the removal of judges is not only a necessary mechanism for judicial accountability but should also be seen as an essential safeguard for judicial independence. Its analysis suggests that some of the grounds for removal and the lack of adequate procedural safeguards within the current legal framework pose threats to both judicial accountability and independence. The article concludes with a call for necessary legal reform, urging policymakers to bring the framework in line with relevant international standards.
Compassion is the emotion that motivates people to relieve the physical, emotional, or mental pains of others. Engaging in compassionate behaviour has been found to enhance psychological wellness and resilience. However, constant displays of compassionate behaviour can lead to burnout particularly for healthcare workers who inherently practise compassion day to day. This burnout can be relieved by Compassion focused meditation. The aim of this review is to identify neuroplastic changes in the brain associated with meditation, with a focus on compassion and compassion related meditation.
Methods:
Based on PRISMA guidelines, we conducted a scoping review of studies which described neuroplastic effects of meditation, focusing on compassion-based training. Studies were excluded if they (i) included multiple meditation practices or (ii) included participant populations with psychiatric/neuropsychiatric history (except anxiety or depression) or (iii) included exclusively ageing populations.
Results:
The results of the reviewed studies showed various neurological changes in regions of the brain as a result of compassion based training. These regions include amygdala, the anterior insula, medial prefrontal cortex, medial orbitofrontal cortex and structures within the dopamine system.
Conclusion:
This review highlights that compassion-based training could lead to neuroplastic changes which interconnect to enhance overall well-being, resilience and compassionate care among health-care professionals. However, further work is required to establish conclusive evidence of its sustained benefit and cost-effectiveness, as well as its utility in a healthcare setting.
Many academics today struggle with their role in the climate and ecological crisis. Increasing numbers take to the streets to demand stronger climate measures, not just as citizens, but as scientists and scholars. How should we conceptualize and evaluate such actions? I examine the responsibilities of academics in the context of the climate and ecological crisis. I offer a defense of academic climate activism that is grounded in membership of the academic community and its special position in the climate crisis, not in the specific expertise of individual scholars. We have a responsibility, as members of the academic community, to listen to our colleagues’ warnings, let their message sink in, reflect on it, and let it move us to action. Such action can take many forms, including collective action. In a context where such warnings are actively thwarted, participating in protest as an academic is not necessarily undemocratic, nor at odds with professional integrity.
In Rayleigh–Bénard convection and Taylor–Couette flow cellular patterns emerge at the onset of instability and persist as large-scale coherent structures in the turbulent regime. Their long-term dynamics has been thoroughly characterised and modelled for the case of turbulent convection, whereas turbulent Taylor rolls have received much less attention. Here we present direct numerical simulations of axisymmetric Taylor–Couette flow in the corotating regime and reveal a transition to spatio–temporal chaos as the system size increases. Beyond this transition, Taylor rolls suddenly undergo erratic drifts evolving on a very slow time scale. We estimate an effective diffusion coefficient for the drift and compare the dynamics with analogous motions in Rayleigh–Bénard convection and Poiseuille flow, suggesting that this spontaneous diffusive displacement of large coherent structures is common among different types of wall-bounded turbulent flows.
Let q be a power of a prime p, let $\mathbb F_q$ be the finite field with q elements and, for each nonconstant polynomial $F\in \mathbb F_{q}[X]$ and each integer $n\ge 1$, let $s_F(n)$ be the degree of the splitting field (over $\mathbb F_q$) of the iterated polynomial $F^{(n)}(X)$. In 1999, Odoni proved that $s_A(n)$ grows linearly with respect to n if $A\in \mathbb F_q[X]$ is an additive polynomial not of the form $aX^{p^h}$; moreover, if q = p and $B(X)=X^p-X$, he obtained the formula $s_{B}(n)=p^{\lceil \log_p n\rceil}$. In this paper we note that $s_F(n)$ grows at least linearly unless $F\in \mathbb F_q[X]$ has an exceptional form and we obtain a stronger form of Odoni’s result, extending it to affine polynomials. In particular, we prove that if A is additive, then $s_A(n)$ resembles the step function $p^{\lceil \log_p n\rceil}$ and we indeed have the identity $s_A(n)=\alpha p^{\lceil \log_p \beta n\rceil}$ for some $\alpha, \beta\in \mathbb Q$, unless A presents a special irregularity of dynamical flavour. As applications of our main result, we obtain statistics for periodic points of linear maps over $\mathbb F_{q^i}$ as $i\to +\infty$ and for the factorization of iterates of affine polynomials over finite fields.
To gather and analyse information from the literature concerning the management of otitis media with effusion in adults.
Methods
A review of the English-language literature from 1970 to the present.
Results
Ventilation tubes have been the standard treatment for otitis media with effusion in adults, but examination of the results of published studies shows that they are associated with disappointing outcomes and significant complications, notably intermittent or chronic discharge, particularly in cases associated with nasopharyngeal carcinoma. Balloon dilatation of the Eustachian tube, intratympanic steroid therapy and cortical mastoidectomy appear to be possible alternatives.
Conclusion
A rethink of the management of otitis media with effusion in adults is needed, together with further research. For cases not associated with nasopharyngeal carcinoma, intratympanic steroid therapy appears to be a promising option.
We show that every $(n,d,\lambda )$-graph contains a Hamilton cycle for sufficiently large $n$, assuming that $d\geq \log ^{6}n$ and $\lambda \leq cd$, where $c=\frac {1}{70000}$. This significantly improves a recent result of Glock, Correia, and Sudakov, who obtained a similar result for $d$ that grows polynomially with $n$. The proof is based on a new result regarding the second largest eigenvalue of the adjacency matrix of a subgraph induced by a random subset of vertices, combined with a recent result on connecting designated pairs of vertices by vertex-disjoint paths in $(n,d,\lambda )$-graphs. We believe that the former result is of independent interest and will have further applications.