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In this paper, we establish Newton–Maclaurin-type inequalities for functions arising from linear combinations of primitively symmetric polynomials. This generalization extends the classical Newton–Maclaurin inequality to a broader class of functions.
Let $(A,\mathfrak{m} )$ be a hypersurface local ring of dimension $d \geq 1$ and let I be an $\mathfrak{m} $-primary ideal. We show that there is a integer rI$\geq\;-1$ (depending only on I) such that if M is any non-free maximal Cohen–Macaulay (= MCM) A-module the function $n \rightarrow \ell(\operatorname{Tor}^A_1(M, A/I^{n+1}))$ (which is of polynomial type) has degree rI. Analogous results hold for Hilbert polynomials associated to Ext-functors. Surprisingly, a key ingredient is the classification of thick subcategories of the stable category of MCM A-modules (obtained by Takahashi, see [11, 6.6]).
We consider the Cauchy problem of the non-linear Schrödinger equation with the modulated dispersion and power type non-linearities in any spatial dimensions. We adapt the Young integral theory developed by Chouk–Gubinelli [7] and multilinear estimates which are based on divisor counting and show the local well-posedness. This generalizes the result by Chouk–Gubinelli [7] in terms of the dimension and the order of the non-linearity.
This article seeks to cast a critical eye on musical modernism through the experiences of its percussionist practitioners. It charts the origins and accepted truisms of percussion ontology as it is understood through the modernist sensibility, and demonstrates how certain modernist assumptions have been inherited by many contemporary practitioners. Some of these individuals’ resulting expressions of grief, anger, and sadness in the wake of modernism's waning are presented, and a reparative reading of modernist percussion that seeks to make the repertory inhabitable and sustaining is instead offered. This practice is illustrated through a feminist and performer-led analysis of Karlheinz Stockhausen's Kontakte (1958–60), for piano, percussion, and tape. It is ultimately argued that performer knowledge and affective attachment is essential to understanding modernism's history and aesthetics, as well as its place in the contemporary moment.
Both mitral annular disjunction and coronary artery anomalies are associated with ventricular arrhythmia, though data on their co-occurrence are limited. We herein present two patients with anomalous aortic origin of a coronary artery and mitral annular disjunction who had ventricular arrhythmia. Mitral annular disjunction should be considered as a potential cause of ventricular arrhythmia when stress tests rule out ischaemia.
Earthquakes deeply affect people’s lives and cause significant psychological damage. This study was conducted to determine the trauma level of midwifery students after the devastating earthquake in Turkey.
Methods
A descriptive cross-sectional study was conducted with 252 students enrolled in the midwifery department of the Faculty of Health Sciences of a state university in Turkey. Data were collected using the participant information form and the Scale for Determining the Level of Post-Earthquake Trauma. Kruskal-Wallis and Mann-Whitney U tests were used for data analysis.
Results
This study found that post-earthquake, students had trauma levels and sub-dimension scores related to behavioral problems, excitement limitation, affective and cognitive structuring, and sleep problems that were above average. The research revealed that students who were present in one of the earthquake-affected provinces, experienced house destruction, suffered the loss of relatives, had previous traumatic events, or received disaster management training had significantly higher levels of trauma.
Conclusions
In this direction, it is of utmost importance for university students in midwifery departments to be prepared for natural disasters like earthquakes. This preparedness will enable them to effectively cope with the physical and psychological issues caused by such disasters, benefiting both their own health and public health.
To evaluate the efficacy and safety of the dumbbell-shaped tragal cartilage–perichondrium air-filled chamber technique versus the gelatine sponge packing method for small–medium tympanic membrane perforations.
Methods
A retrospective analysis of 68 patients (39 air-filled chamber, 29 gelatine sponge) treated between January 2020 and September 2024. Pre- and post-operative assessments included pure tone audiometry, air–bone gap, tympanic membrane healing, and visual analogue scale scores.
Results
Healing rates were similar (89.7 per cent vs 93.1 per cent, p = 0.959). At six months, pure tone audiometry and air–bone gap improvements were comparable (p > 0.05). At one month, the air-filled chamber group showed better hearing recovery (pure tone audiometry: 19.71 vs 24.27 dB HL; air–bone gap: 7.28 vs 12.28 dB HL; both p < 0.05) and lower pain scores (1.13 vs 1.59, p = 0.022). Complications and operative times were similar.
Conclusion
The air-filled chamber technique is a safe and effective alternative, offering superior early hearing recovery, reduced discomfort, and comparable long-term outcomes to the gelatine sponge method.
A hazard vulnerabilities analysis (HVA) is an exercise used by institutions to identify potential threats and is required for credentialing hospitals in the US. To date, there is no documentation of HVA completion in low/middle income countries (LMIC) in the literature. American physicians working together with local physicians and staff from a major referral hospital in Addis Ababa, Ethiopia conducted an HVA in the LMIC setting. Using the Kaiser HVA template, the tool and exercise were tailored to the needs and resources of the LMIC setting. The exercise prompted rich discussion and facilitated the development of a framework to address local hospital threats. Many threats were considered sub-acute or chronic problems that had potential to acutely worsen, putting hospital operations and patient care in jeopardy and impacting staff. Ongoing threats were addressed creatively by the hospital administration, caregivers, and staff, a testament to the resiliency of the system and those working in it. Nonetheless, the hospital benefited from the HVA framework to improve future preparedness. Conducting an HVA in the LMIC setting is feasible, and this example can serve as a basis for HVA completion by other hospitals in similar settings.
Endovascular thrombectomy (EVT) is the gold standard treatment for acute ischemic stroke (AIS) patients with large vessel occlusion (LVO). Multiple factors can influence EVT outcomes, including procedural and patient-related variables. This meta-analysis investigated the impact of periprocedural hemoglobin (Hb) levels on EVT outcomes.
Methods:
We performed a comprehensive literature search across PubMed, Scopus, Web of Science and Cochrane CENTRAL. We analyzed the mean difference (MD) in Hb levels between good (modified Rankin Scale [mRS] 0–2) and poor (mRS 3–6) prognosis groups. We calculated pooled odds ratios (OR) for Hb levels as a predictor of prognosis and compared mortality and symptomatic intracranial hemorrhage (sICH) across different Hb levels.
Results:
The analysis included 921 patients from four studies. Patients in the good prognosis group had significantly higher Hb levels (MD: 0.48 g/dL, 95% CI: [0.2, 0.75], P = 0.0007). Each 1 g/dL increase in Hb was associated with a 22% increase in the odds of achieving a good three-month prognosis (OR: 1.22, 95% CI: [1.13, 1.33], P < 0.00001). Patients with Hb levels ≤13 g/dL in males and ≤12 g/dL in females were 1.69 times more likely to experience mortality (OR: 1.69, 95% CI: [1.1, 2.59], P = 0.02). No significant difference was observed in sICH occurrence between anemic and non-anemic patients.
Conclusion:
Higher Hb levels may be associated with improved prognosis, and lower Hb levels might increase mortality risk in AIS-LVO patients undergoing EVT. Further research is needed to validate these findings.
Ménière’s disease is an inner-ear disorder caused by endolymphatic hydrops, characterised by recurrent episodes of vertigo, fluctuating hearing loss, and tinnitus. Ménière’s disease can be classified as ‘probable’ and ‘definite’ according to the criteria determined by the Bárány Society.
Methods
This analytical cross-sectional retrospective study included 28 Ménière’s disease patients (15 with definite Ménière’s disease and 13 with probable Ménière’s disease). Vestibular function was assessed using ocular-vestibular evoked myogenic potentials, cervical-vestibular evoked myogenic potentials and caloric test.
Results
The results of these tests were evaluated separately for probable Ménière’s disease and definite Ménière’s disease groups and comparisons were made. Significant differences in vestibular evoked myogenic potential asymmetry rates were observed between the probable Ménière’s disease and definite Ménière’s disease groups, with the definite Ménière’s disease group exhibiting a higher rate of abnormal responses.
Conclusion
This suggests that vestibular evoked myogenic potentials testing may be a valuable tool in distinguishing between these two subtypes of Ménière’s disease. Further research is necessary to validate these findings and explore their implications for clinical practice.
The reflection of multiple incident shock waves that converge to a single point on the reflecting surface is studied in this paper. The number of the incident shocks, denoted $K$, is arbitrary. The interaction between the reflected shock of one incident shock and the other incident shocks may produce various possible configurations, such as type-I, type-II and type-IV shock interferences. The number of possible reflection configurations is shown to be an exponential function of ($K-1$) with base 2. The possibility of pre-, middle- and post-Mach reflections, which means Mach reflection occurs for the first, middle and last incident shock, is revealed through numerical simulation for $K=3$. For the particular case where the incident shocks are produced by equal variation of wedge surface deflection, the conventional von Neumann condition and detachment condition for the $k\mathrm{th}$ incident shock to have Mach reflection are derived. It is shown that the von Neumann condition for regular reflection is lowered and the detachment condition for Mach reflection is elevated as $k$ increases. The shock reflection patterns for $ K=1,2,\ldots ,10$ are obtained by numerical simulations. We observe a shock interaction train structure, where we have pre-Mach reflection followed by ($K-1$) type-I or type-II shock interferences. We also observe that the Mach stem height decreases with $K$ well above the von Neumann condition and becomes non-monotonic near the von Neumann condition.
Political science educators have a responsibility to design their programs in a way that incorporates content that involves and engages underserved populations. In recent polls, a significant majority of Generation Z identified as LGBTQ+, representing a percentage that is larger than those who identify as African American or Hispanic (Jones 2024; Public Religion Research Institute 2024). Implementing changes in mainline political science courses (e.g., introduction to American national government, the presidency, and comparative politics) will allow the discipline to better serve LGBTQ+ students. Ample examples involving LGBTQ+-themed content provide instruction in a wide battery of political science courses. Pivoting into a more supportive pedagogy may be a successful strategy for addressing the oncoming “population cliff” (i.e., a projected decline in college enrollment) that will impact the number of students beginning college in the future. Whereas the process will require substantial investment in energy to initiate, an updated approach to teaching political science courses will reap dividends in terms of student interest, engagement with course material, and LGBTQ+ representation in the profession.
Upper extremity rehabilitation robots have become crucial in stroke rehabilitation due to their high durability, repeatability, and task-specific capabilities. A significant challenge in assessing the comfort performance of these robots is accurately calculating the human-robot interaction forces. In this study, a four-degree-of-freedom (4-DOF) upper extremity rehabilitation robot mechanism, kinematically compatible with the human upper limb, is proposed. Based on this mechanism, an algorithm for estimating human-robot interaction forces is developed using Newton-Euler dynamics. A prototype of the proposed robot is constructed, and a series of comparative experiments are carried out to validate the feasibility of the proposed force estimation approach. The results indicate that the proposed method reliably predicts interaction forces with minimal deviation from experimental data, demonstrating its potential for application in upper limb rehabilitation robots. This work provides a foundation for future studies focused on comfort evaluation and optimization of rehabilitation robots, with significant practical implications for improving patient rehabilitation outcomes.
Posthuman understanding of music and bodies as matter highlights otherwise forms of musical embodied learning. In this paper, we focus on an early childhood classroom music event and think diffractively with cognitive and posthuman theories in order to extend our insight into it. Accordingly, we explore cognitive approaches to music and movement, as well as posthuman concepts such as agency, embodiment, affect and desire, (de)territorialisations and assemblages. As music educators, we acknowledge the relationship between music and movement in early childhood, but our posthuman reading of the event enables a more equitable understanding of children’s music learning.
This paper examines the household economics of Tomoko Matsudaira, a Japanese female economist, with a specific focus on the issue of wise consumption within Matsudaira’s expenditure theory. The exploration includes Matsudaira’s definition and criteria for wise consumption, her perspectives on consumer cooperatives guiding wise consumption within the household, her views on the influence of the consumer environment outside the household, and consumer awareness of wise consumption. This paper is the first ever investigation of Matsudaira’s views on wise consumption in English, and it primarily relies on Matsudaira’s debut work, Household Economics (1925a), but also references her later works to discern whether Matsudaira’s perspectives on wise consumption changed or developed over her more than forty years of research in household economics. This paper aims to provide theoretical insights into wise consumption by exploring Matsudaira’s discussions on household economics.
The evolution of turbulent spots in a flat plate boundary layer is examined using time-resolved tomographic particle image velocimetry (Tomo-PIV) experiments and direct numerical simulation (DNS). The characteristics of flow structures are examined using timelines and material surfaces. Both the numerical and experimental results reveal a notable behaviour in the developmental process of turbulent spots: the development of low-speed streaks at the spanwise edges of turbulent spots, followed by the subsequent formation of hairpin vortices. The behaviour of these low-speed streaks is further investigated using timelines and material surfaces generated for a series of regions and development times. The results indicate that these low-speed streaks exhibit characteristic wave behaviour. The low-speed streaks are observed to lift up as three-dimensional (3-D) waves, with high-shear layers forming at the interface of these waves. These induced high-shear layers become unstable and evolve into vortices, which contribute to the expansion of the turbulent spot. These findings show the significant role of 3-D waves in the development of turbulent spots, supporting the hypothesis that 3-D waves serve as initiators of vortices at the bounding surface of a turbulent spot.