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As ice recedes, the governance of the Arctic is undergoing a significant change. What was once considered a frozen desert with little relevance to the legal system, the Arctic has gradually become a global object of governance. Furthermore, the growing political salience of the Arctic Ocean has generated interest in its governance beyond Arctic states, particularly Asian states such as China, India, Japan, Singapore and South Korea. These countries have been actively participating in regional cooperation arrangements, including the Arctic Council. Undoubtedly, science diplomacy has been an important driver in shaping the governance of the Arctic and maintaining it as a low-tension area. However, this perception is now being put to the test following the Russian invasion of Ukraine. Amidst this crisis, we explore whether science diplomacy can continue to promote peaceful collaboration in the Arctic region. Our research suggests that science diplomacy could potentially aid in the future of Arctic governance, particularly with regard to the involvement of Asian states. We analyse the legal and geopolitical factors involved in determining the potential roles of Asian states in Arctic governance, including whether they could serve as a bridge between the West and Russia or if their actions might further fragment Arctic governance.
This article provides a narrative about archival research experience in Sierra Leone as the coronavirus outbreak spread globally in early 2020. Coincidentally, the research concerned the country’s history of epidemics since 1787, when Freetown, its first city, accommodated freed Blacks repatriated from Britain and the Americas. As Sierra Leone prepared for another disease outbreak after Ebola in 2014, leaving or staying in Freetown (after seven months into a ten-month Fulbright US Scholar term) had health and research outcomes at stake. Historicizing the pandemic while engaging personal/social memory in historical accounts, the article highlights containment measures adopted against epidemics/pandemics across time.
A cylinder immersed in a current and free to translate along a circular arc is considered to investigate the impact of path curvature on the flow-induced vibrations (FIV) occurring without structural restoring force. Path curvature magnitude ($\kappa$, inverse of path radius non-dimensionalized by the body diameter $D$) is varied from $0$ (transverse rectilinear path) to $20$, over a wide range of values of the structure to displaced fluid mass ratio, $m^\star \in [0.05,10]$. The exploration is carried out numerically at subcritical and postcritical values of the Reynolds number ($Re$, based on $D$ and the inflow velocity), i.e. below and above the critical value $47$ for the onset of flow unsteadiness when the body is fixed, up to $100$. Path curvature triggers a desynchronized regime of the flow–body system in addition to the synchronized regime typical of vortex-induced vibrations, and alters the composition of fluid forcing. The most prominent effect uncovered here is, however, a global enhancement of FIV, with three principal results: (i) vibrations and flow unsteadiness are found to arise at lower subcritical $Re$ along a curved path, down to $19.5$ versus $31$ for $\kappa =0$; (ii) the $m^\star$ range where substantial responses develop is considerably extended and encompasses the entire interval under study, which contrasts with the narrow band of low $m^\star$ identified for $\kappa =0$; (iii) the vibrations are amplified, $+45\,\%$ relative to the peak amplitude measured along a rectilinear path at $Re =100$.
The influence of roughness spacing on boundary layer transition over distributed roughness elements is studied using direct numerical simulation and global stability analysis, and compared with isolated roughness elements at the same Reynolds number $Re_h=U_eh/\nu$ ($U_e$ is the boundary layer edge velocity, h is roughness height and $\nu$ is the kinetic viscosity of the fluid). Small spanwise spacing ($\lambda _z=2.5h$) inhibits the formation of counter-rotating vortex pairs (CVP) and, as a result, hairpin vortices are not generated and the downstream shear layer is steady. For $\lambda _z=5h$, the CVP and hairpin vortices are induced by the first row of roughness, perturbing the downstream shear layer and causing transition. The temporal periodicity of the primary hairpin vortices appears to be independent of the streamwise spacing. Distributed roughness leads to a lower critical roughness Reynolds number for instability to occur and a more significant breakdown of the boundary layer compared with isolated roughness. When the streamwise spacing is $\lambda _x=5h$, the high-momentum fluid barely moves downward into the cavities and the wake flow has little impact on the following roughness elements. The leading unstable varicose mode is associated with the central low-speed streaks along the aligned roughness elements, and its frequency is close to the shedding frequency of hairpin vortices in the isolated case. For larger streamwise spacing ($\lambda _x=10h$), two distinct modes are obtained from global stability analysis. The first mode shows varicose symmetry, corresponding to the primary hairpin vortex shedding induced by the first-row roughness. The high-speed streaks formed in the longitudinal grooves are also found to be unstable and interact with the varicose mode. The second mode is a sinuous mode with lower frequency, induced as the wake flow of the first-row roughness runs into the second row. It extracts most energy from the spanwise shear between the high- and low-speed streaks.
This study is a corpus-based investigation of the use of the V-final (VF) order in Old English conjunct (or coordinate) clauses. The aim of the analysis is to determine which of the two hypotheses formulated in earlier studies of the subject finds more convincing data support in the available corpora of Old English. According to one interpretation, conjunct clauses are a subtype of main clauses, and the VF order is used in both groups to signal continuation in discourse, especially with punctual, dynamic and relatively heavy verbs. Under the other view, VF conjunct clauses are syntactically subordinate, with the coordinating conjunction blocking verb movement like a complementiser. The present study shows that while both hypotheses are descriptively adequate, the main mechanism responsible for the use of the VF order in conjunct clauses is syntactic priming, with the VF order activated by a trigger clause (usually subordinate) and spreading to the following conjunct clause(s), which often results in long chains of subsequent VF clauses.
In this article, we study the recent development of the qualitative uncertainty principle on certain Lie groups. In particular, we consider that if the Weyl transform on certain step-two nilpotent Lie groups is of finite rank, then the function has to be zero almost everywhere as long as the nonvanishing set for the function has finite measure. Further, we consider that if the Weyl transform of each Fourier–Wigner piece of a suitable function on the Heisenberg motion group is of finite rank, then the function has to be zero almost everywhere whenever the nonvanishing set for each Fourier–Wigner piece has finite measure.
This paper explores Chalmers and Glasziou's (2009) notion of ‘research waste’ from healthcare research to examine what it can offer the field of applied linguistics. Drawing on examples from both disciplines, we unpack Macleod et al.'s (2014) five research waste categories: (1) asking the wrong research questions, (2) failing to situate new research in the context of existing research, (3) inefficient research regulation/management, (4) failing to disseminate findings, and (5) poor research reporting practices. We advance this typology to help applied linguists identify and reduce avoidable research waste and improve the relevance, quality, and impact of their research.
If a flat, horizontal, plate settles onto a flat surface, it is known that the gap $h$ decreases with time $t$ as a power law: $h\sim t^{-1/2}$. We consider what happens if the plate is not initially horizontal, and/or the centre of mass is not symmetrically positioned: does one edge contact the surface in finite time, or does the plate approach the horizontal without making contact? The dynamics of this system is analysed and shown to be remarkably complex. We find that, depending upon the initial position of the plate and the position of the centre of force, the plate might either make contact in finite time or settle progressively without ever making contact. Our results show an excellent agreement between analytical exact solutions, asymptotic solutions and numerical studies of the lubrication equations.
The north coast of Peru is among the most extensively surveyed regions in the world, yet variation in research questions, sampling strategies and chronological and geospatial controls among survey projects makes comparison of disparate datasets difficult. To contextualise these issues, the authors present a systematic survey of satellite imagery focusing on hilltop fortifications in the Jequetepeque and Santa Valleys. This digital recontextualisation of pedestrian survey data demonstrates the potential of hybrid methodologies to substantially expand both the identification of archaeological sites within difficult terrain and, consequently, our understanding of the function of defensive sites.
During the nineteenth century, many heard the afterlife before they could see it. These clairaudient forays took place in the context of spiritualism, a religious movement that facilitated communication between the living and the dead. Although the senses were important to spiritualism, sound was especially crucial for developing cosmologies of the afterlife. Sound can have powerful affective effects, especially in the realm of religion. In the case of spiritualism, however, notions of sound are complicated because of the inclusion of clairaudient and acousmatic sounds. This article analyzes spiritualist soundscapes in terms of acoustemologies, using personal narratives and instructional materials to demonstrate how spiritualists developed a sense of space through sound. Not only does my analysis demonstrate the importance of sound to these spiritual communities, but it also shows that spiritualist conceptions of sound require a special understanding of the nature of sound.
This article offers a reconstruction and assessment of the emerging rebellion of European constitutional courts against the exceptionless supremacy of European Union (EU) law. It presents the ontological theories of supremacy and how the Court of Justice of the EU (CJEU) overcame the first two major challenges of its history: the existential challenge of canonizing the general doctrine of supremacy and the Solange challenge of national fundamental rights. It provides an account of the emerging ultra vires challenge, including its root cause and evolvement, and provides an assessment and sets out proposals. The article demonstrates that the crux of the matter is not the primacy of EU law but the interpretive primacy of the CJEU. It argues that the rebellion was triggered by the perception that the CJEU case law features a declining normative and an increasing policy character. The debate about the CJEU's evolutionary interpretation, in a certain sense, parallels US constitutional law's debate between originalism and the living constitution, with the difference that the EU is a pluralist legal order.
This article explores the sudden rise in popularity and limited long-term impact of Rudolf Goldscheid's work around the time of the Great War. Goldscheid is remembered as a founder of central European sociology, a creator of fiscal sociology, and a fin-de-siècle feminist and pacifist. His reputation ranks behind many of his peers in the social sciences, however. A reevaluation of Goldscheid's position within the fin-de-siècle intellectual landscape of Vienna and central Europe reveals why his sudden success—which was really decades in the making—did not endure in the same way as that of Joseph Schumpeter or Otto Neurath, among others. Goldscheid's ideas seemed innovative in the revolutionary years 1918–1920, yet they were frequently misunderstood. His eccentric position in the socio-liberal sphere of fin-de-siècle Vienna seemed to mute his political impact after the war. A better appreciation of Goldscheid's work not only enriches our understanding of his innovative proposals but also illuminates a frenetic, experimental era in central European history.