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Given a symmetric monoidal category ${\mathcal C}$ with product $\sqcup $, where the neutral element for the product is an initial object, we consider the poset of $\sqcup $-complemented subobjects of a given object X. When this poset has finite height, we define decompositions and partial decompositions of X which are coherent with $\sqcup $, and order them by refinement. From these posets, we define complexes of frames and partial bases, augmented Bergman complexes and related ordered versions. We propose a unified approach to the study of their combinatorics and homotopy type, establishing various properties and relations between them. Via explicit homotopy formulas, we will be able to transfer structural properties, such as Cohen-Macaulayness.
In well-studied scenarios, the poset of $\sqcup $-complemented subobjects specializes to the poset of free factors of a free group, the subspace poset of a vector space, the poset of nondegenerate subspaces of a vector space with a nondegenerate form, and the lattice of flats of a matroid. The decomposition and partial decomposition posets, the complex of frames and partial bases together with the ordered versions, either coincide with well-known structures, generalize them, or yield new interesting objects. In these particular cases, we provide new results along with open questions and conjectures.
To sustain a protracted war after losing foreign loans and reserves and being sanctioned by the Allies, Japan used its ‘internal financing mechanism’ to gobble up civilian capital through government bonds, unbacked paper currency and interest rate interventions. These tactics aggrandised the size of the monetary base and money supply in Japan’s home islands and colonies, but also created inflationary pressures. To minimise the risk of (hyper)inflation, the government encouraged civilians to save in order to enrich the capital of financial intermediaries who would then absorb the ever-increasing government bonds. The ideal failed as monetary expansion outstripped economic productivity, even though expansionary monetary policy had to be tolerable in order to supply sufficient credit for war production. Imperial Japan’s use of unsecured credit to finance the war, together with its loose exchange controls, led to the diversion of colonial hyperinflationary pressures to the home islands, multiplying the risk of implosion of the ‘internal financing mechanism’. Although draconian currency controls were subsequently introduced, they further disrupted the empire’s economic order, and eventually led to the collapse of the yen bloc.
Heart failure in children is a clinical and pathophysiological syndrome arising from ventricular dysfunction and pressure or volume overload of the circulatory system. Features of paediatric heart failure include feeding problems, poor weight gain, exercise intolerance, or dyspnoea. The aetiology of heart failure in children is complex, with the primary causes being CHD and cardiomyopathies. Cardiomyopathies occur at an incidence of 1.13–1.24 cases per 100,000 children. The prevalence of cardiomyopathy is estimated to be 7.8–8.3 cases per 100,000 infants, particularly common in patients under one year of age presenting with severe heart failure symptoms. Mitral valve insufficiency is a significant source of morbidity in children with dilated cardiomyopathy. Severe mitral insufficiency can lead to a decrease in cardiac output, independent of the left ventricular ejection fraction, exacerbating the clinical course of heart failure in patients with dilated cardiomyopathy. As ventricular systolic function deteriorates, the options for treating mitral insufficiency decrease, leading to a loss of surgical intervention opportunities and making heart transplantation the only viable option. Close monitoring of mitral valve insufficiency in children with dilated cardiomyopathy is essential, as it may lead to decompensated heart failure. In patients who have lost the chance for valve surgery due to decompensation, the application of left ventricular assist device can help improve the decompensatory state and contribute to the reduction of left ventricular diastolic and systolic dimensions, consequently leading to improvements in the dilation of the mitral annulus and severe mitral insufficiency findings. Further studies are needed to determine the optimal timing for surgery in patients who have not missed the chance for valve surgery due to a decrease in ejection fraction.
Let $t\geq 2$ and $k\geq 1$ be integers. A t-regular partition of a positive integer n is a partition of n such that none of its parts is divisible by t. Let $b_{t,k}(n)$ denote the number of hooks of length k in all the t-regular partitions of n. In this article, we prove some inequalities for $b_{t,k}(n)$ for fixed values of k. We prove that for any $t\geq 2$, $b_{t+1,1}(n)\geq b_{t,1}(n)$, for all $n\geq 0$. We also prove that $b_{3,2}(n)\geq b_{2,2}(n)$ for all $n>3$, and $b_{3,3}(n)\geq b_{2,3}(n)$ for all $n\geq 0$. Finally, we state some problems for future works.
Chapter 6 turns to ritual processions or parades (pompai) which formed part of ancient Greek religious festivals. On the evidence of the Great Dionysia of 309/308 BCE organised by Demetrius of Phalerum, Ptolemy II’s ‘Grand Procession’ shortly thereafter, and Herodes Atticus’ Panathenaea of 143 CE, large, self-animated machines, known as automata, became a feature of Hellenistic processions. Automata were effective as processional equipment because they enhanced existing features of religious procession: narrative, synaesthesia, and the call–response relation between worshippers and the deity. Automata in procession attest to the new technological capabilities of the Hellenistic period and are harnessed within new religious and political realities including the development of ruler cult, but their effective deployment was based on existing theological structures. The chapter also looks in detail at the only extant technical text dedicated to the construction of automata: Hero of Alexandria’s On Automata.
In recent years, analysts have raised concerns about the threat misinformation poses to democracy, yet efforts to counter misinformation have been met with charges of bias and censorship, predominantly from the political right. This article asks who sets the terms of debate over misinformation: what it is, how much there is, whether it is a problem, and what to do about it. It frames the past decade’s controversies around misinformation as an implicit struggle for authority and offers a framework to interpret the arguments of the actors involved. It identifies three coalitions with distinct institutional and ideological profiles that have articulated consistent stances on misinformation. The analysis demonstrates how contestation among competing coalitions plays out in five distinct domains of misinformation: content, attribution, scale, consequences, and policy. Viewing the misinformation debate as part of broader political and cultural struggles within democracies at a time of low trust in institutions helps explain why (mis)information is so fiercely contested. The issue takes on outsize proportions because whoever prevails in shaping the discourse surrounding misinformation stands to gain authority over the rules governing the public sphere, with implications for the future of free speech and democratic participation.
As the United States faces the real threat of democratic backsliding, it is clear that the current commercial news media simply lacks the power and capacity to facilitate the development of the “informed citizen” who is foundational to liberal democratic ideals. This piece argues for the need to reconceptualize citizenship in an era when professional journalism plays a significantly diminished role in directly shaping our news and information environment, especially at the local level. I make the case that we must consider what it means to live in a post-newspaper democracy. In a time of market failure for local news, both journalists and the public need to identify which functions are unique to professional journalism as a civic institution. I join others who have argued that we need to move away from the concept of the “good citizen” as only a consumer of information/voter as their form of civic participation. I call for reimagining citizenship with communication at its center. Within this theory of “communicative citizenship,” a good citizen plays the civic role of communicator, not as a replacement for journalists, but instead as a facilitator of the flow of reliable civic information from institutions to their fellow community members.
The Noctuidae (Lepidoptera) comprise the most diverse and abundant lepidopteran families in the Canadian Prairie Ecozone. Within this group, some species are agricultural pests that require monitoring. Pheromone lures target specific species, whereas food-bait lures attract a broader range. This study reports the diversity and abundance of noctuid moths captured in traps baited with female sex pheromones of pest species and with food-bait lures consisting of acetic acid and 3-methyl-1-butanol (AAMB) with fermented byproduct or floral volatile compounds. Food-bait lures that attract pests and nonpest species can provide insight into moth populations and species richness in human-managed ecosystems. We trapped moths in wheat (Poaceae) and canola (Brassicaceae) fields in central Alberta, Canada. We captured and identified to species approximately 7900 noctuid moths. Community composition was similar in both crops. Sex pheromone–baited traps had variable specificity and low nontarget diversity. Traps baited with AAMB captured greater moth diversity than unbaited traps did. Noctuinae were the most diverse and abundant in AAMB-baited traps (62 species across 8 tribes). The AAMB lures captured more cutworm and armyworm pests than unbaited traps did. Fermented byproduct food–bait lures captured more noctuid pests than floral volatiles did. The AAMB lures can be implemented to monitor Noctuinae diversity and potentially assess local noctuid pest density in agroecosystems on the Canadian prairies.
The first example of mechanical epiphany that the book sets forth is that of the well-known ‘god on the machine’ (deus ex machina) employed in the ancient Greek theatre. Moving beyond interpreting the theatrical crane as a plot device, this chapter forefronts the mēchanē’s material qualities to explore the theological potential of the object as a mode of visual epiphany. Vital to the success of this mode of epiphany was the challenge to the viewer to recognise divine intervention as well as the mechanics that constructed and enabled it. The evidence of Old Comedy, both fragmentary and the fuller plays of Aristophanes, help demonstrate how uses of the comic crane (kradē) undercut the interpretative symbiosis between man, machine, and divine agency on which tragedy was predicated. The chapter closes by exploring how the theatre as a form of mass media made it fertile ground for development and exploration of theological ideas, not just a reflection of literary norms.
In the effort to deliver the American press from a “death spiral,” advocates often fall back on describing the press function. It is generally explained as a matter of legal doctrine (what the Supreme Court says the press does) and political theory (that a free press is central to democracy). But advocates should also conceptualize the function as a matter of rhetoric. How advocates describe the press’s work can change the degree to which the public cares about that work. In this era of crisis and distraction, that caring is key to preserving and even reimagining the press. This essay describes how press advocates can use rhetoric as a framework to rename press functions and imagine new ones in service of a dynamic and invigorated press.
Aims: Temporal Lobe Epilepsy (TLE) is the most common symptomatic cause of partial epilepsy worldwide. It can present with vague symptoms including affective disturbances, personality changes, sensory disturbances, altered consciousness etc., which can confound diagnosis. Overt focal or tonic-clonic seizures are present in only 60% patients. It manifests with psychotic symptoms in around 5%. This case report describes how undiagnosed TLE with psychotic symptoms led to grave consequences.
Methods: We present a 52-year-old male who was found to have killed his father and was subsequently diagnosed with TLE. This diagnosis was later found to be directly implicated in the act. When arrested on suspicion of homicide he presented with several psychotic symptoms and severe agitation in custody. He was then detained under the Mental Health Act to a high secure psychiatric hospital. He had no formal psychiatric or medical diagnosis prior to his arrest but it was noted that he had presented on multiple occasions to secondary neurology and psychiatric services over the preceding 10 years with vague but consistent symptoms which were labelled as night terrors. These included clouding of consciousness, affective disturbance, night terrors, suicidal ideation, and isolated aggressive outbursts. Following his hospital admission, he was assessed by neurologists and was diagnosed of TLE after his EEG clearly demonstrated abnormalities in line with the diagnosis. The gentleman’s psychiatric symptoms resolved entirely when he was treated adequately for TLE with an anti-epileptic (lamotrigine). At trial, he was found not guilty of murder by reason of insanity and received a hospital order with restrictions.
Results: TLE is a treatable neurological disorder but is associated with a risk of heightened violence especially if misdiagnosed. In this patient, repeated opportunities were missed in diagnosing and treating TLE in a timely manner. Potential differentials that can confound TLE diagnosis include night terrors, functional psychosis, anxiety disorders, affective disorders, substance misuse etc.
Conclusion: TLE can have far-reaching and life-altering consequences. To obviate these, it is recommended that repeated presentations with unexplained neurological and psychiatric symptoms in outpatient or emergency settings should trigger robust assessments and multi-specialty liaison. It would be beneficial to develop a protocol to trigger a thorough evaluation of suspected TLE cases with a lower threshold to investigate them than what is currently practised. This could involve earlier and wider utilisation of electro-encephalogram (EEG) (ambulatory or residential).
This paper contends that the intractability of food insecurity as a social policy issue may have arisen in part because food access has become central to the interpretation of what is required to be food secure. We revisit key features of the evolution of the right to food and examine developments in the instruments used to monitor right to food progress. We articulate how the materiality of food access has come to the forefront of food systems policy, within which food insecurity is embedded but its structural underpinnings are lost. In turn, civil society food-based responses to growing food insecurity prevalence prevail. The pre-eminence of objectified food access as a socio-political orientation to food insecurity has refabricated the social problem of food need. A conscious uncoupling of food access from how we study and respond to food insecurity is needed to re-design food insecurity policy that is grounded in poverty alleviation.
The global prevalence of mental health disorders among youths aged 15 to 24 is a significant public health concern. This systematic review aimed to explore global strategies for promoting mental well-being and addressing mental health challenges within this demographic, as defined by the World Health Organization. A comprehensive search of electronic scientific databases was conducted on November 1, 2023, yielding 43 studies with a total of 29,581 participants published between 2008 and 2023 that examined mental health interventions targeting youth. This review identified heterogeneity across multiple dimensions including modes and modalities of intervention delivery, conceptualisations of mental health, measurement tools and implementation settings. Digital/ technology-based interventions were prevalent in high-income countries, whereas physical interventions were more commonly employed across all income groups, especially where technological infrastructure was limited. Cognitive-behavioural therapy, psychoeducation and mindfulness-based interventions dominated the intervention modalities, likely due to their structured formats, scalability and broad applicability across a range of settings and mental health conditions. However, limited evidence of cultural adaptation in the reviewed interventions highlights the need for more inclusive and context-sensitive approaches. Schools were the most frequent delivery setting; however, reliance on educational platforms risks excluding out-of-school and marginalised youth. Conceptually, the reviewed interventions reflected both disorder-specific (diagnostic) and transdiagnostic understandings of mental health, affirming a spectrum-based view that integrates symptom reduction with well-being enhancement. This dual lens supports emerging frameworks such as the Hierarchical Taxonomy of Psychopathology (HiTOP). Measurement heterogeneity mirrored conceptual diversity, with both standardised and context-specific tools used to assess outcomes. This diversity highlighted the urgent need for culturally relevant, flexible and multi-modal interventions that span diverse settings and conceptualisations to equitably support youth mental health worldwide.
Cor triatriatum sinister is a rare congenital cardiac anomaly, occurring in approximately 1 in 1,000 congenital cases. Although typically diagnosed in infancy because of significant haemodynamic consequences, cases in adulthood are uncommon and may present with nonspecific symptoms.
Case presentation:
A 31-year-old male presented with progressive dyspnoea and haemoptysis. Transthoracic echocardiography revealed a fibrous membrane dividing the left atrium, with a 5-mm fenestration permitting communication between an accessory chamber and the main left atrial cavity; four pulmonary veins drained into the accessory chamber. In addition, an atrial septal defect and pulmonary hypertension were identified. The patient underwent surgical correction, which included resection of the membrane, closure of the atrial septal defect using a Dacron patch, and DeVega tricuspid annuloplasty. Intraoperative transesophageal echocardiography confirmed absence of residual shunt and tricuspid regurgitation with improved pulmonary artery pressures.
Conclusion:
This case underscores the necessity for early recognition and timely surgical intervention in adult cor triatriatum sinister cases to prevent complications such as right ventricular failure and severe pulmonary hypertension.