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The Istanbul metroplex airspace, home to Atatürk (LTBA), Sabiha Gökçen (LTFJ), and Istanbul (LTFM) international airports, is a critical hub for international travel, trade and commerce between Europe and Asia. The high air traffic volume and the proximity of multiple airports make air traffic management (ATM) a significant challenge. To better manage this complex air traffic, it is necessary to conduct detailed analyses of the capacities of these airports and surrounding airspace. In this study, Monte Carlo simulation is used to determine the ultimate and practical capacities of the airport and surrounding airspace and compare them to identify any differences or limitations. The traffic mix, runway occupancy time and traffic distribution at airspace entry points are randomised variables that directly impact airport and airspace capacities and delays. The study aims to determine the current capacities of the runways and routes in the metroplex airspace and project the future capacities with the addition of new facilities. The results demonstrated that the actual bottleneck could be experienced in airspace, rather than runways, which was the focus of the previous literature. Thus, this study will provide valuable insights for stakeholders in the aviation industry to effectively manage air traffic in the metroplex airspace and meet the growing demand.
What role can museums and libraries play in improving people's health and wellbeing? This is the question staff at the V&A Museum are exploring through Cognitive Stimulation Therapy (CST), a treatment designed for adults with a recent diagnosis of dementia, traditionally delivered in a clinical setting. Guided by experts from the dementia charity Resonate Arts and the NHS's Memory Service, V&A curators and librarians are discovering the great potential of the museum and its collections to improve and enrich lives.
This work deals with the linear surface waves generated by a vessel advancing at a constant forward speed. These waves, known as ship waves, appear stationary to an observer on the vessel. Rather than exploring the well-studied stationary ship waves, this work delves into the physical properties of ship waves measured at Earth-fixed locations. While it might have been expected that analysing these waves in an Earth-fixed coordinate system would be a straightforward transformation from existing analytical theories in a moving coordinate system, the reality proves to be quite different. The properties of waves measured at fixed locations due to a passing ship turn out to be complex and non-trivial. They exhibit unique characteristics, being notably unsteady and short crested, despite appearing stationary to an observer on the generating vessel. The analytical expressions for the physical properties of these unsteady waves are made available in this work, including the amplitude, frequency, wavenumber, direction of propagation, phase velocity and group velocity. Based on these newly derived expressions and two-point measurements, an inverse method has been presented for determining the advancing speed and the course of motion of the moving ship responsible for the wave generation. The results from this study can be used in a wide range of applications, such as interpreting data from point measurements and assessing the roles of ship waves in transporting ocean particles.
Contemporary studies of Anglican biblical interpretation in the nineteenth century are scant. Those that do exist tend to paint the biblical interpretation of the period as unidimensional and flat. This paper highlights diverse ways the Bible was interpreted by Anglicans in the nineteenth century by looking at the writings of Charles Simeon, Benjamin Jowett, and Christina Rossetti. Each has interesting and distinct ways of approaching the Bible. The paper analyzes their interpretive practices before tracing them to the present and drawing out significant historical themes in each.
Scholarship on the political economy of natural resources in the Global South has often relied on the concept of the “resource curse” to explain the negative features of extractive economies and their alleged tendency to promote rent capture at the expense of national sovereignty and development. Such theories link the behavior of social actors to an excess of “unearned income,” with little reference to the concrete forms of political and cultural mediation that reproduce this structure of growth. This article explores the role of the devil symbol in populist discourse in Venezuela and how this spectral figure comes to mediate subaltern consciousness. Tracing the origins of this image to colonialism and efforts to grasp the dynamics of the modern petrostate, the analysis shows how use of this symbol to mediate the forecast transition from a rentier to a productive economy has given workers in a state enterprise a potent set of signs to articulate opposition to unjust labor conditions. Venezuelan leaders have deployed figures drawn from local folklore to divide society into two competing power blocs. Yet, while these discourses are effective at forging coalitions and justifying specific reallocations of oil wealth, they do not obviate the tensions of this transition, and a counternarrative using these same figures has arisen in response. The article concludes with an analysis of parallels between global theories of the resource curse and local Venezuelan iterations of this discourse as well as a discussion of the role of translation in theories of culture and modernity.
The European Court of Human Rights (ECtHR) handed down a unanimous decision on November 23, 2023, in a case brought by former Polish President Lech Walesa against the Polish Government. The Court concluded that a Polish Appeals Court, the Chamber of Extraordinary Review and Public Affairs (CERPA), had violated Walesa's right to an independent and impartial trial, breached “the principle of legal certainty,” and violated his right to respect for private and family life. The Court found that the CERPA “was not an ‘independent and impartial tribunal established by law’” and was often used by the state to “further its own political opinions and motives,” as the Prosecutor General of Poland and the Executive branch of government held considerable influence and authority over the judicial system. Additionally, the 2017 law that created the CERPA gave to the General Prosecutor “the unlimited power to contest virtually any final judicial decision” and extended the time limits for filing appeals, which enabled the Prosecutor to act retroactively and undermine the “requirement of foreseeability.”
This article explores the rise of international cooperation and policing in solving the so-called “Gypsy question” between 1870 and 1945. Situating this issue within a broader phenomenon of illiberal internationalism, it demonstrates how the central European powers often pursued international action to serve their own national agendas. In doing so, this study shows how the shared concern of cross-border Gypsy itinerancy and migration in central Europe prompted several international policing initiatives that eventually crystallized under the International Criminal Police Commission (or ICPC) in 1931 into a transnational framework for controlling Gypsies. Against this background, the article also investigates whether the role of Switzerland and Austria as major frontrunners for anti-Gypsy international measures changed once the ICPC was under Nazi control. By closely examining critical activities and antiziganist ICPC discourse between 1933 and 1945, it reveals how the ICPC created a matrix of surveillance that eased the way toward the Gypsy genocide.
Elicited imitation (EI) tasks are a practical tool for measuring second language (L2) knowledge and skills. In this study, we implemented a web-based EI task that measures English morphosyntactic knowledge and compared its measurement properties to a traditional laboratory-based EI. A cohort of 149 L2 English learners engaged in the web-based EI task, and 151 participants completed a traditional lab-based EI counterpart. Correlation analyses revealed a significant, comparable relationship between English proficiency and the two EI versions, with the ungrammatical items showing less consistency that neither improved nor harmed the overall EI effectiveness. Factor analyses corroborated the validity of web-programmed EI, with both EI versions relating similarly to time-pressured, implicit knowledge and untimed, explicit knowledge measures. Our results suggest the potential for utilizing web-based EI to substitute lab-based tasks, enabling larger-scale, more diverse sampling. We end with implications for future web-based EI task users and include a coding guideline for customized web-based EI use.
The one-variable fragment of a first-order logic may be viewed as an “S5-like” modal logic, where the universal and existential quantifiers are replaced by box and diamond modalities, respectively. Axiomatizations of these modal logics have been obtained for special cases—notably, the modal counterparts $\mathrm {S5}$ and $\mathrm {MIPC}$ of the one-variable fragments of first-order classical logic and first-order intuitionistic logic, respectively—but a general approach, extending beyond first-order intermediate logics, has been lacking. To this end, a sufficient criterion is given in this paper for the one-variable fragment of a semantically defined first-order logic—spanning families of intermediate, substructural, many-valued, and modal logics—to admit a certain natural axiomatization. More precisely, an axiomatization is obtained for the one-variable fragment of any first-order logic based on a variety of algebraic structures with a lattice reduct that has the superamalgamation property, using a generalized version of a functional representation theorem for monadic Heyting algebras due to Bezhanishvili and Harding. An alternative proof-theoretic strategy for obtaining such axiomatization results is also developed for first-order substructural logics that have a cut-free sequent calculus and admit a certain interpolation property.
Numerical analysis of a steady monatomic gas flow about the point of the regular reflection of a strong oblique shock wave from the symmetry plane is conducted with the Navier–Stokes–Fourier (NSF) equations, the regularized Grad 13-moment (R13) equations and the direct simulation Monte Carlo (DSMC) method. In contrast to the inviscid solution to this problem completely defined by the Rankine–Hugoniot (RH) relations, all three models predict a complicated flow structure with strong thermal non-equilibrium and a long wake with flow parameters not predicted by the RH relations. The temperature $T_y$ related to thermal motion of molecules in the direction normal to the symmetry plane has a maximum inside the reflection zone while in a planar shock wave the maximum is observed for the $T_x$ temperature. The R13 equations predict these features much better than the NSF equations and are in good agreement with the benchmark DSMC results. An analysis of the flow with the conservation equations was conducted in order to evaluate the effects of various processes on a fluid element moving along the symmetry plane. In contrast to the shock wave where effects of viscosity and heat conduction are one-dimensional with zeroth net contribution to the fluid-element energy across the shock, the flow across the zone of the shock reflection is dominated by two-dimensional effects with positive net contribution of viscosity and negative contribution of heat conduction to the fluid-element energy. These effects are believed to be the main source of the wake with parameters deviating from the RH values.
This article analyses the challenges that online marketplaces and e-commerce pose to traditional product liability doctrines. It uses a comparative perspective to examine whether an online platform can be liable to a consumer for a defective product purchased on its platform, and the adaption of product liability law to this challenge in a series of jurisdictions. It reflects on the role of litigation and regulation, focusing on Europe and the United States, and considers reform in a number of jurisdictions in this area. It concludes with proposals for increasing the accountability of online marketplaces for products sold on their websites.