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When a water wave group encounters a floating body, it forces the body into motion; this motion radiates waves that modify the wave group. This study considers a floating body in the form of a two-dimensional (2-D) rectangular block constrained to heaving motion. The focus is on how the 2-D block modifies infragravity (IG) waves, a type of nonlinear low-frequency wave in the wave group. The IG waves transmitted beyond the block comprise two types: (i) bound IG waves generated by nonlinear interactions of first-order carrier waves, and (ii) free IG waves released due to discontinuities in flow potential created by the block. A systematic parameter sweep reveals that, when heaving motion is allowed, the transmitted IG waves differ significantly from those of stationary blocks. In some cases, heaving motion enables attenuation of the total transmitted IG waves, while stationary blocks cannot achieve similar effects. Only small-sized blocks are considered; they are ‘small’ compared with the IG wavelengths. The findings are relevant to dual-purpose wave energy converters designed for energy generation and coastal protection, floating breakwaters and other small-sized floating structures such as ships and some icebergs: the heaving motion of these objects may modify IG waves, thereby influencing harbour resonance, near-shore currents, beach erosion, wave forcing on ice shelves and coastal inundation.
For Γ a finite subgroup of $\mathrm{SL}_2(\mathbb{C})$ and $n \geq 1$, we study the fibres of the Procesi bundle over the Γ-fixed points of the Hilbert scheme of n points in the plane. For each irreducible component of this fixed point locus, our approach reduces the study of the fibres of the Procesi bundle, as an $(\mathfrak{S}_n \times \Gamma)$-module, to the study of the fibres of the Procesi bundle over an irreducible component of dimension zero in a smaller Hilbert scheme. When Γ is of type A, our main result shows, as a corollary, that the fibre of the Procesi bundle over the monomial ideal associated with a partition λ is induced, as an $(\mathfrak{S}_n \times \Gamma)$-module, from the fibre of the Procesi bundle over the monomial ideal associated with the core of λ. We give different proofs of this corollary in two edge cases using only representation theory and symmetric functions.
This paper critiques the use of the term ‘evil’ in philosophical discussions of the problem of evil. We argue that what is commonly identified as ‘evil’ in this debate is better as ‘misfortune.’ The division between moral and natural evil equivocates between agentic and non-agentic ‘evil,’ undermining its coherence as a unifying concept. Evil events are necessarily caused by evildoers, which are non-existent in events of natural evil. By contrast, ‘misfortune’ places the focus on the victim regardless of the source, better capturing what philosophers intend with the prior term ‘evil.’ Our more precise definition of ‘evil’ satisfies Jean Nabert’s notion of evil as the unjustifiable while also being sufficiently distinct from badness. What distinguishes ‘evil’ from mere badness is moral erasure, which is the perception of other human beings as objects unworthy of moral consideration. While a bad person causes misfortunes as a trade-off in pursuit of a perceived good, an evil person is either completely indifferent to their victim’s misfortunes, or malicious by deliberately causing misfortunes for pleasure’s sake. Our distinction between ‘misfortune’ and ‘evil’ clarified as (im)moral, indifferent, or malicious challenges the assumption that evil, as traditionally framed, poses a direct contradiction to God’s existence.
Recent years have witnessed an increasing trend toward the formalization of circular migration. This formalization is perceived as a mutually beneficial win-win arrangement: host countries secure labor, source countries establish a reliable system of remittances that contribute to development, and migrants are positioned as individuals attaining access to secure and better employment. Labor contractors have been made important in this context, as they play a role in forming linkages, managing a steady supply of workers, managing bureaucratic procedures, training workers, and becoming a buffer between labor and capital. While the dominant debate has been on blaming the labor contractors for the exploitation of migrant workers and creating precarious forms of work, this paper uses racialization theory to locate their role against the backdrop of enforcing return, fragmented labor management, upward capital concentration, and downward labor outsourcing. Using the case of Thai migrant workers who work seasonally in the berry farms of Sweden, it highlights a fundamental contradiction in the current regime of transient servitude: migrant worker is desired, yet the individuals embodying it are not. In so doing, an array of contractual and extra-contractual mechanisms is employed, which reinforces deeply racialized ideologies, stereotypes, and institutions. The use of labor contractors is one such mechanism. Utilizing racialization theory, the thesis identifies enforced return of migrants and the pursuit of an ideal worker as crucial components in the formalization of transnational circular migration. Deportation, rather than being an ultimate objective of enforcing return, serves to deepen the inherent vulnerability experienced by workers who grapple with the understanding that their deportability is an intrinsic aspect of their existence. This reinforcement further amplifies deeply entrenched racialized forms of insecurity, where laborers form a permanent labor force of the temporarily employed. To ensure that migrant workers are at the forefront of recruitment for specific types of low-paying and precarious work, employers strategically employ racialized narratives, portraying them as invaluable assets by emphasizing their perceived strong “work ethic” and reliability. This depiction elevates them to the status of “good workers,” surpassing the local labor alternative. It underscores that capital’s demand extends beyond a mere requirement for labor power; it necessitates labor power that can be exploited.
Cystic neck masses have a wide differential diagnosis. Fine-needle aspiration cytology with or without thyroglobulin washout may be non-diagnostic or false-negative, while a primary thyroid tumour may be sonographically occult. We aim to demonstrate the value of biochemical thyroglobulin measurement in directly aspirated cyst fluid in diagnosis or exclusion of papillary thyroid cancer cystic nodal metastases.
Methods
Prospective case series (n = 10) of patients presenting with a lateral cystic neck mass with or without thyroid abnormality, where thyroglobulin measurement of aspirated cyst fluid was part of the diagnostic workup.
Results
N1b papillary thyroid cancer diagnosis was predicted by elevated thyroglobulin in cyst fluid aspirate in seven cases, all greater than 200 µg/L, confirmed at surgical resection. Papillary thyroid cancer nodal metastasis was refuted by low thyroglobulin result in three benign cystic lesions, all less than 6 µg/L.
Conclusion
Biochemical thyroglobulin analysis of fluid aspirate is a valuable adjunct for evaluation of cystic neck masses and pre-operative diagnosis of papillary thyroid cancer cystic nodal metastases.
While the relationship between space and openness has been explored in electroacoustic music since the 1960s, and contemporary composers have shown increasing interest in contingency, recent advancements in ambisonics, sound diffusion, and VR have granted composers greater control over the spatial image presented to the listener. This article revisits the discussion of space and openness through the lens of the author’s artistic practice and compositional experience, framed by new materialism, object-oriented philosophy and relational space theory. Through case studies from the author’s work, it examines spatialisation strategies that emphasise openness and the agency of sound materials. These strategies include sound source localisation, networks of family resemblances and parametric spatialisation, aiming to create an open sound experience that maintains identity while allowing agency for the sound material, the listener and the composer. In light of current global crises, partly driven by total control and exploitation, this article advocates for rethinking compositional practices to foster open sound experiences that reflect dynamic interactions between composer, material and listener.
Earthquakes cause significant mortality and morbidity, particularly through crush injuries and their complications. This study aimed to evaluate whether systemic immune inflammation index (SII) and Pan-immune inflammatory values (PIV) obtained from complete blood count parameters can predict intensive care needs, dialysis requirements, and mortality in patients with crush injuries following earthquake.
Methods
We retrospectively analyzed data from 76 patients with crush injuries admitted to a university hospital following the earthquake. Blood samples were collected upon admission. SII and PIV were calculated and compared with conventional laboratory markers for their ability to predict clinical outcomes.
Results
Intensive care unit (ICU) admission was required in 40.8% of patients, and 21.1% required dialysis. In ROC analysis, an SII value above 1372 predicted ICU admission with 67.7% sensitivity and 66.7% specificity (P < .001), while an SII value above 1735 predicted dialysis requirement with 75.0% sensitivity and 73.3% specificity (P < .001). Similarly, a PIV value above 1345 predicted ICU admission with 74.2% sensitivity and 73.3% specificity (P < .001), and a value above 1906 predicted dialysis requirement with 81.3% sensitivity and 78.3% specificity (P < .001).
Conclusions
Complete blood count-derived inflammatory markers may serve as accessible, early indicators to complement clinical assessment for resource allocation following earthquake-related crush injuries, particularly in resource-limited disaster settings. These tools may aid in patient triage and care planning when comprehensive laboratory testing is limited.
Richard Nixon won a narrow popular and electoral vote victory in 1968. This article investigates whether newspaper endorsements, which heavily favored Nixon, were pivotal in his victory. Utilizing the shift in endorsements between 1964 and 1968, we find a sizable endorsement effect. This estimated effect was large enough to be pivotal: eliminating Nixon’s endorsement advantage would have deprived him of an Electoral College victory, resulting in a contingent election. Alternatively, if newspapers had endorsed his opponent, Hubert Humphrey, at the same rates they endorsed Johnson in 1964, Humphrey would have won the Electoral College.
The word “thug” entered the common English language in a slew of texts published in London across the 1830s. These works—narrative accounts as well as social histories—cataloged the so-called cult of Indian thugs, a newly “discovered” band of highway robbers believed to operate throughout the Indian subcontinent. This essay traces a literary and cultural history of these representations; yet, I argue, many of their roots are to be found less in Indian social history than in the existing discursive structures of London. In particular, medico-literary frameworks of sensibility—in existing use to construct and mediate metropolitan sensationalism—came, consequentially, to inform both these imperial representations and the associated conceptualizations of national boundaries.
This study challenges the predominantly positive view of entrepreneurial team diversity by exploring its negative effects on start-up survival across different development stages. Drawing on secondary data from interviews of failed start-ups retrieved from the Failory database, triangulated with additional publicly available sources of evidence, the research employs an inductive qualitative analysis grounded in the Gioia method and a retrospective approach, to examine which demographic, informational, personality, and cognitive diversity characteristics contribute to failure during the idea, product development, and launch stages. Findings reveal that personality and cognitive diversity are critical in idea development, personality and informational diversity during product development, and personality and demographic diversity during the launch stage. Adopting a dynamic perspective, the study deepens the understanding of team dynamics and venture survival in the entrepreneurial context. The findings guide managers and policymakers on leveraging diversity as a strategic asset while addressing challenges throughout the venture’s lifecycle.
Sir Ernest Shackleton’s ship, Endurance, was crushed by Antarctic sea ice and sank in November 1915. Since then, it has been widely considered that Endurance was the strongest polar ship of its time and was lost because ice tore away the rudder. Based on expedition diaries, Shackleton’s correspondence, and structural analysis, this paper shows that Endurance was not among the strongest ships of its time and that the rudder was not the main cause of the vessel sinking. While the final reason was tearing off the keel, Endurance sank because the vessel was simply crushed in compression by ice. This is not surprising, Endurance was not designed for compressive conditions in the Antarctic pack ice, but for easier conditions at the ice edge in the Arctic. The weakest part of its hull was the engine room area, which was not only larger than in other early Antarctic ships but also lacked beams to give strength against compression by ice. Comparison with other wooden polar ships is not favourable for Endurance: ships designed for compressive pack ice were stronger. It is also evident from archive research that Shackleton was well aware of the weaknesses of Endurance even before his expedition set sail for Antarctica.
The objective of the study was to determine the effect of tranexamic acid in ear surgeries on duration of surgery, intra-operative blood loss, visibility and mean arterial pressure (MAP).
Methods
A systematic review and meta-analysis were conducted following the 2020 PRISMA guidelines. Five databases were used (PubMed, Cochrane, Scopus, Web of Science and Embase). A search yielded 73 articles: 31 were duplicates and 42 were screened for by two authors. A standardised mean difference (SMD) was calculated to measure the effect size across studies.
Results
The search yielded five final studies with ear procedures including tympanoplasty, atticotomy, mastoidectomy, ossiculoplasty, stapedotomy, tympanotomy and microscopic modified radical mastoidectomy. Tranexamic acid reduced duration of surgery (standardised mean difference = -3.82; p = 0.38), intra-operative blood loss (standardised mean difference = -19.64; p < 0.05) and mean arterial pressure (standardised mean difference = -2.88; p < 0.05).
Conclusion
This meta-analysis demonstrated that tranexamic acid reduced bleeding and mean arterial pressure that were both statistically significant, while the reduction in duration of surgery was statistically insignificant. All studies reported better visibility.
Cognitive neuroscientists typically posit representations that relate to various aspects of the world, which philosophers call representational content. Anti-realists about representational content argue that contents play no role in neuroscientific explanations of cognitive capacities. In this paper, I defend realism against an anti-realist argument due to Frances Egan, who argues that for content to be explanatory it must be both essential and naturalistic. I introduce a case study from cognitive neuroscience in which content is both essential and naturalistic, meeting Egan’s challenge. I then spell out some general principles for identifying studies in which content plays an explanatory role.