cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comment on `Fluctuation-dominated phase ordering at a mixed order transition'
Creators: name: Godrèche, Claude
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Renewal processes generated by a power-law distribution of intervals with tail index less than unity are genuinely non-stationary. This issue is illustrated by a critical review of the recent paper by Barma, Majumdar and Mukamel 2019 \textit{J.~Phys.~A} {\bf 52} 254001, devoted to the investigation of the properties of a specific one-dimensional equilibrium spin system with long-range interactions. We explain why discarding the non-stationarity of the process underlying the model leads to an incorrect expression of the critical spin-spin correlation function, even when the system, subjected to periodic boundary conditions, is translation invariant.
description: 8 pages, 1 figure
Exercise Training in Chronic Kidney Disease: Impact on Cardiovascular Risk Factors
Creators: name: Xenophontos, Soteris
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: Cardiovascular disease is the leading cause of morbidity and mortality in people with chronic kidney disease (CKD). Cardiovascular disease in CKD is usually attributed to traditional cardiovascular risk factors and / or novel risk factors specific to kidney disease. Several risk factors may potentially be modified through exercise training to reduce cardiovascular complications. The aims of this thesis were to characterise the ExTra CKD population by providing baseline data in terms of demographics, aerobic and functional capacity, cardiac output measurements, markers of inflammation and iron metabolism, to evaluate the reliability of brachial artery flow mediated dilation (BA-FMD) to assess endothelial function, to establish readily available methods in assessing aerobic capacity (VO2Peak) (a prognostic biomarker of survival in this patient population) and to assess the effects of 12 weeks of aerobic exercise (AE) or combined aerobic and resistance exercise (CE) on four interconnected risk factors namely aerobic and functional capacity, endothelial function, chronic inflammation and iron metabolism. VO2Peak values in the present cohort were similar to those reported in cardiovascular disease cohorts and lower than values reported in healthy age matched counterparts (Chapter 3). Additionally, hepcidin-25 (a key regulator of iron homeostasis) and haemoglobin levels in the present cohort were significantly different to age matched controls (Chapter 7). BA-FMD showed good inter-operator reliability with regards to scan interpretation, however no changes were shown following exercise (Chapter 4). Chapter 5 demonstrates that VO2Peak can be estimated using an incremental shuttle walking test and the Duke Activity Status Index with similar accuracy as expensive laboratory based cardiopulmonary exercise tests. Estimated VO2Peak calculated using the equations in Chapter 5 improved following both CE and AE (Chapter 6). Despite the known anti-inflammatory properties of exercise, no changes in inflammatory profile were shown following exercise. Interestingly, hepcidin-25 was reduced following exercise (Chapter 7).
Effective description of non-equilibrium currents in cold magnetized plasma
Creators: name: Iqbal, Nabil
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The dynamics of cold strongly magnetized plasma -- traditionally the domain of force-free electrodynamics -- has recently been reformulated in terms of symmetries and effective field theory, where the degrees of freedom are the momentum and magnetic flux carried by a fluid of cold strings. In physical applications where the electron mass can be neglected one might expect the presence of extra light charged modes -- electrons in the lowest Landau level -- propagating parallel to the magnetic field lines. We construct an effective description of such electric charges, describing their interaction with plasma degrees of freedom in terms of a new collective mode that can be thought of as a bosonization of the electric charge density along each field line. In this framework QED phenomena such as charged pair production and the axial anomaly are described at the classical level. Formally, our construction corresponds to gauging a particular part of the higher form symmetry associated with magnetic flux conservation. We study some simple applications of our effective theory, showing that the scattering of magnetosonic modes generically creates particles and that the rotating Michel monopole is now surrounded by a cloud of electric charge.
description: 13 pages, 1 figure
‘The Cage Called Fatherland’: The Poetry of Michael Hofmann
Creators: name: Sahely, André Naffis
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: This thesis is the first comprehensive full-length study of the poetry of Michael Hofmann (1957–), who was born in Germany, educated in Britain and now lives in the United States. Widely hailed as one of the most original and influential voices in British poetry during the 1980s and early 1990s, I argue that Hofmann’s five published volumes of poetry, from his debut Nights In The Iron Hotel (1983) to his latest collection, One Lark, One Horse (2018), chronicle the poet’s sentimental and intellectual education from adolescence to middle-age, as well as the traumatic emotional experiences that arose out of poet’s relationship with his father, the German novelist Gert Hofmann (1931–1993), whom Hofmann portrayed to shocking effect in his breakthrough second collection, Acrimony (1986). Furthermore, I argue that Hofmann’s work may be interpreted as an exploration of the geo-existential anxiety prompted by his inability to fully integrate himself in the places he has lived in throughout his life, in particular Germany, Britain, and the U.S., elucidating why Hofmann has described his poetry as constituting an ‘extended passport application’. Methodologically, this thesis situates itself at the intersection between close reading textual analyses, psycho-biographical investigations of the poet’s life, and narrative perspectives that contextualise the sociopolitical field of references Hofmann weaves into his poems. Furthermore, I examine Hofmann’s chief literary influences, revealing that while he was heavily inspired by the example of Robert Lowell’s confessional model, his work was also shaped by other poetic mentors, including Ian Hamilton and Hugo Williams. My thesis concludes with an overview of the poet’s forty-three-year career, while charting the influence he has exerted on other poets, testifying to the value and importance of his oeuvre in the contemporary British tradition.
Sato-Tate Equidistribution for Families of Automorphic Representations through the Stable Trace Formula
Creators: name: Dalal, Rahul
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 11F55, (primary) 11F70, 11F72, 11F75, 22E50, 22E55 (secondary)

description: In arXiv:1208.1945, Shin and Templier proved certain equidistribution bounds on local components of certain families of automorphic representations. We extend their weight-aspect results to families of automorphic representations where the Archimedean component is restricted to a single discrete-series representation instead of an entire $L$-packet. We do this by using a so-called "hyperendoscopy" version of the stable trace formula developed by Ferrari. The main technical difficulties are defining a version of hyperendoscopy that works for groups without simply connected derived subgroup and bounding the values of transfers of unramified functions. We also present an extension of Arthur's simple trace formula for test functions with Euler-Poincaré component at infinity to non-cuspidal groups since it does not seem to appear elsewhere in the literature.
description: 74 pages. Beyond lots of typo corrections, there were some material corrections in sections 2.1, 6.4, and 10.1. 10.1 in particular had parts that were dependent on a reference that has been found to have a gap
On Fredholm boundary conditions on manifolds with corners I: Global corner's cycles obstructions
Creators: name: Rouse, Paulo Carrillo
name: Lescure, Jean-Marie
name: Velasquez, Mario
Publisher: name: arXiv
Year: 2019
Subjects: subject: K-Theory and Homology (math.KT)
subject: Differential Geometry (math.DG)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 19K56, 58J40, 58H05

description: Given a connected manifold with corners of any codimension there is a very basic and computable homology theory called conormal homology defined in terms of faces and orientations of their conormal bundles, and whose cycles correspond geometrically to corner's cycles. Our main theorem is that, for any manifold with corners $X$ of any codimension, there is a natural and explicit morphism $$K_*(\mathcal{K}_b(X)) \stackrel{T}{\longrightarrow} H^{pcn}_*(X,\mathbb{Q})$$ between the $K-$theory group of the algebra $\mathcal{K}_b(X)$ of $b$-compact operators for $X$ and the periodic conormal homology group with rational coeficients, and that $T$ is a rational isomorphism. As shown by the first two authors in a previous paper this computation implies that the rational groups $H^{pcn}_{ev}(X,\mathbb{Q})$ provide an obstruction to the Fredholm perturbation property for compact connected manifold with corners. The difference with respect to the previous article of the first two authors in which they solve this problem for low codimensions is that we overcome in the present article the problem of computing the higher spectral sequence K-theory differentials associated to the canonical filtration by codimension by introducing an explicit topological space whose singular cohomology is canonically isomorphic to the conormal homology and whose K-theory is naturally isomorphic to the $K-$theory groups of the algebra $\mathcal{K}_b(X)$.
description: Comments welcome!
A study of life years lost and care pathways in people with learning disabilities: a real-world observational study
Creators: name: Tyrer, Freya
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: INTRODUCTION People living with learning disabilities (LD) are known to experience mortality disparities but the relative contribution of social, genetic, and health-related factors is not clear. AIMS The aims of this thesis were to: 1. compare differential mortality in people with and without LD; 2 compare differential life expectancy in people with and without LD; 3 quantify the impact and magnitude of sociodemographic factors, comorbidities and health needs on premature deaths; and 4 explore primary and secondary care pathways and causes of death. METHODS The project used the Clinical Practice Research Datalink (CPRD) and linked hospital and mortality data from England in 2000–2019 to compare individuals (aged 10+ years) with and without LD (n=33,867 vs n=980,586). Parametric statistics (Poisson regression [Aims 1, 4], flexible parametric methods [Aim 2]) and propensity scores [Aim 3] were utilised. Covariates included age, gender, deprivation, severe health needs, genetic syndromes and comorbidities. RESULTS Consistent differential mortality disparities were observed between the LD and comparison cohorts over time. Standardised mortality ratios ranged from 2.91 ([95% CI] 2.69–3.15) to 3.06 (2.84–3.29)) and were particularly high from epilepsy and respiratory-related causes. In 2017–2019, additional years expected to live at 10 years was 57.1 (54.9–59.4) in the LD cohort compared to 72.3 (71.9–72.7) in the comparison cohort, representing a loss in life years of 21%. Severe health needs were high in the LD cohort (46.4% vs 9.7%) but did not explain all of the life expectancy disadvantages. Even in those without any of the health needs, life expectancy was still 12% lower in the LD cohort. People with LD had more primary care and hospital admissions but lower uptake of cancer screening. Methodological considerations included immortal time bias and knot placements for the flexible parametric approaches adopted. CONCLUSIONS This thesis continues to highlight the mortality disparities that people with LD experience. Such disparities can only partially be explained by deprivation, co-occurring health needs, comorbidities and genetic syndromes. Recommendations and policy implications are discussed.
Persistent Homology as Stopping-Criterion for Voronoi Interpolation
Creators: name: Melodia, Luciano
name: Lenz, Richard
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Geometry (cs.CG)
subject: Machine Learning (cs.LG)
subject: Algebraic Topology (math.AT)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this study the Voronoi interpolation is used to interpolate a set of points drawn from a topological space with higher homology groups on its filtration. The technique is based on Voronoi tessellation, which induces a natural dual map to the Delaunay triangulation. Advantage is taken from this fact calculating the persistent homology on it after each iteration to capture the changing topology of the data. The boundary points are identified as critical. The Bottleneck and Wasserstein distance serve as a measure of quality between the original point set and the interpolation. If the norm of two distances exceeds a heuristically determined threshold, the algorithm terminates. We give the theoretical basis for this approach and justify its validity with numerical experiments.
description: Code available at https://e1.pcloud.link/publink/show?code=XZO4FHZdEnlN42BqnzGXV7omN501zJAnp0V
การจำแนกพื้นที่ป่าผลัดใบโดยใช้ภาพดาวเทียมแลนด์แซทหลายช่วงเวลากับเทคนิคอัตราส่วนช่วงคลื่น
Creators: name: วิภพ แพงวังทอง
Publisher: name: กองบริหารการวิจัย
Year: 2561
Subjects: ข้อมูลดาวเทียมแลนด์แซท 8 หลายช่วงเวลา
เทคนิคอัตราส่วนช่วงคลื่น
การจำแนกชนิดป่า
ป่าผลัดใบ

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 26, 8, 1302-1311
การพัฒนาผลิตภัณฑ์เส้นก๋วยเตี๋ยวจากปลานวลจันทร์เสริมสาหร่ายพวงองุ่น
Creators: name: นันธิดา แดงขาว
Publisher: name: กองบริหารการวิจัย
Year: 2561
Subjects: ปลานวลจันทร์
สาหร่ายพวงองุ่น
เส้นก๋วยเตี๋ยวจากเนื้อปลา

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 26, 8, 1311-1324
Towards local testability for quantum coding
Creators: name: Leverrier, Anthony
name: Londe, Vivien
name: Zémor, Gilles
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Geometric Topology (math.GT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We introduce the hemicubic codes, a family of quantum codes obtained by associating qubits with the $p$-faces of the $n$-cube (for $n>p$) and stabilizer constraints with faces of dimension $(p\pm1)$. The quantum code obtained by identifying antipodal faces of the resulting complex encodes one logical qubit into $N = 2^{n-p-1} \tbinom{n}{p}$ physical qubits and displays local testability with a soundness of $Ω(1/\log(N))$ beating the current state-of-the-art of $1/\log^{2}(N)$ due to Hastings. We exploit this local testability to devise an efficient decoding algorithm that corrects arbitrary errors of size less than the minimum distance, up to polylog factors. We then extend this code family by considering the quotient of the $n$-cube by arbitrary linear classical codes of length $n$. We establish the parameters of these generalized hemicubic codes. Interestingly, if the soundness of the hemicubic code could be shown to be constant, similarly to the ordinary $n$-cube, then the generalized hemicubic codes could yield quantum locally testable codes of length not exceeding an exponential or even polynomial function of the code dimension.
description: 44 pages, an extended abstract appeared at ITCS 2021 v2: journal version
สมบัติเชิงหน้าที่ของข้าวไทย : การต้านอนุมูลอิสระและการส่งเสริมการเจริญเติบโตของจุลินทรีย์สุขภาพ
Creators: name: นิพัฒน์ ลิ้มสงวน, ประมวล ทรายทอง
Publisher: name: กองบริหารการวิจัย
Year: 2561
Subjects: ข้าว
ความสามารถในการต้านอนุมูลอิสระ
แป้งรีซิสแตนท์
จุลินทรีย์สุขภาพ

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 26, 8, 1336-1347
Technische Verfahren zur CO2-Entnahme aus der Atmosphäre und Speicherung im Untergrund oder in langlebigen Produkten
Creators: name: Dittmeyer, Roland
name: Dietrich, Benjamin
Publisher: name: Universität Hamburg
Year: 2023
Subjects: CO2 removal from the atmosphere, CO2 storing in underground, CO2 storing in durable products, gas emissions to net zero, DAC, DAC on industrial scale. DACCS, DACCU, CO2-mineralization

description: Technical processes for CO2 removal from the atmosphere and storing it underground or in durable products: The use of technical processes to remove CO2 from the atmosphere (DAC) is seen as the last but indispensable option to bring global greenhouse gas emissions first to net zero and then to negative values (IPCC 2022, IEA 2022, Prognos 2021). Avoidance, and where this is not possible reduction, of emissions is to be prioritized over DAC, as are nature-based solutions for CO2 removal. Nevertheless, it is assumed that DAC with a global capacity of gigatons of CO2 per year will be needed in perspective (Viebahn et al. 2019). Research and development must help reduce energy demand and costs, and a market ramp-up must be stimulated to make DAC available on an industrial scale. Captured CO2 is either stored in the geological subsurface (DACCS) or used for carbon-based products (DACCU). The permanence of the emplacement can be increased by mineralization of the CO2 in reactive rock layers, e.g., by the Carbfix process. (Snæbjörnsdóttir et al. 2020) In the case of DACCU, one can only speak of negative CO2 emissions if there is a long service life of the products. Otherwise, they are CO2-neutral approaches in the best case.
สภาวะสารอาหารที่เหมาะสมสำหรับการผลิตมวลเซลล์และโอเมก้า-3 จากทรอสโทไคทริดส์
Creators: name: พฤทฐิภร ศุภพล, ชุติมา แก้วพิบูลย์, สิตา ปรีดานนท์
Publisher: name: กองบริหารการวิจัย
Year: 2561
Subjects: ทรอสโทไคทริดส์
มวลเซลล์
กรดไขมันโอเมก้า-3

description: วารสารวิทยาศาสตร์และเทคโนโลยี, 26, 8, 1348-1364
Mordell-Weil ranks and Tate-Shafarevich groups of elliptic curves with mixed-reduction type over cyclotomic extensions
Creators: name: Lei, Antonio
name: Lim, Meng Fai
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $E$ be an elliptic curve defined over a number field $K$ where $p$ splits completely. Suppose that $E$ has good reduction at all primes above $p$. Generalizing previous works of Kobayashi and Sprung, we define multiply signed Selmer groups over the cyclotomic $\mathbb{Z}_p$-extension of a finite extension $F$ of $K$ where $p$ is unramified. Under the hypothesis that the Pontryagin duals of these Selmer groups are torsion over the corresponding Iwasawa algebra, we show that the Mordell-Weil ranks of $E$ over a subextension of the cyclotomic $\mathbb{Z}_p$-extension are bounded. Furthermore, we derive an aysmptotic formula of the growth of the $p$-parts of the Tate-Shafarevich groups of $E$ over these extensions.
description: 20 pages
Is There a Man in This Text? French (Auto)-Translation of Sorana Gurian's "Zilele nu se întorc niciodată"
Creators: name: Krupa, Tomasz
Publisher: name: Zenodo
Year: 2022

description: The case of Sorana Gurian (1913-1956) and her first novel Zilele nu se întorc niciodată is an opportunity to examine the position of artists from the periphery who tend towards the centre. As a Russian-speaking Jew, she ‘deterritorializes’ the Romanian language by describing Bessarabia, which despite its status as a historical Romanian region, constitutes an otherness within Greater Romania. The fact of reconstructing in writing this tension between the centre (Bucharest) and the periphery (Bessarabia) at the time of the Second World War bears witness to an impossible identity project: how to write about Bessarabia in Romanian when the fascist Romanian powers are carrying out a policy of ethnic cleansing there? And how can one claim one's own origins through literature when this risks deportation? Meanwhile, by translating her novel into French in the 1950s in collaboration with Richard Gébault, Sorana Gurian attempted to join the World Republic of Letters. Nevertheless, the intrusion of Richard Gébault leads to numerous modifications in the text and changes the way it may be received. If the existence of two authors does not abolish an autobiographical reading, this construction raises a series of questions: what is the nature of the heterodiegetic narrator in this case? Does it change according to gender and number of authors? Does coauthorship break the unity of the narrative voice and reflect the relationship between the two? Following Mary Jacobus’ striking question 'Is There a Woman in This Text', I propose to ask: is there a man in Les jours ne reviennent jamais?
Induced birational transformations on O'Grady's sixfolds
Creators: name: Grossi, Annalisa
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We introduce the notion of induced birational transformations of irreducible holomorphic symplectic sixfolds of the sporadic deformation type discovered by O'Grady. We give a criterion to determine when a manifold of $OG_6$ type is birational to a moduli space of sheaves on an abelian surface. Then we determine when a birational transformation of the moduli space is induced by an automorphism of the abelian surface. Referring to the Mongardi--Rapagnetta--Saccá birational model of manifolds of $OG_6$ type, we give a result to determine when a birational transformation is induced at the quotient. We give an application of these criteria in the nonsymplectic case.
description: Main results are extended to birational transformations. Section 5 has been added. To appear in Journal of the London Mathematical Society
Integration of Neural Network-Based Symbolic Regression in Deep Learning for Scientific Discovery
Creators: name: Kim, Samuel
name: Lu, Peter Y.
name: Mukherjee, Srijon
name: Gilbert, Michael
name: Jing, Li
name: Čeperić, Vladimir
name: Soljačić, Marin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Symbolic regression is a powerful technique that can discover analytical equations that describe data, which can lead to explainable models and generalizability outside of the training data set. In contrast, neural networks have achieved amazing levels of accuracy on image recognition and natural language processing tasks, but are often seen as black-box models that are difficult to interpret and typically extrapolate poorly. Here we use a neural network-based architecture for symbolic regression called the Equation Learner (EQL) network and integrate it with other deep learning architectures such that the whole system can be trained end-to-end through backpropagation. To demonstrate the power of such systems, we study their performance on several substantially different tasks. First, we show that the neural network can perform symbolic regression and learn the form of several functions. Next, we present an MNIST arithmetic task where a separate part of the neural network extracts the digits. Finally, we demonstrate prediction of dynamical systems where an unknown parameter is extracted through an encoder. We find that the EQL-based architecture can extrapolate quite well outside of the training data set compared to a standard neural network-based architecture, paving the way for deep learning to be applied in scientific exploration and discovery.
description: 12 pages, 10 figures
A Critical Study of Male Western Muslim Expatriate Teachers’ Perceptions of Educational Leadership Practices in a Saudi Arabian University Preparatory Year English Language Program
Creators: name: Mullick, Humza
Publisher: name: University of Leicester
Year: 2023
Subjects: Uncategorized

description: Effective educational leadership has been described as one of the foundational concepts for the successful operation of any educational establishment. Much of the research conducted has been within a “Western” context. There has been some interest in Asia and Africa, but the Middle East is still greatly underrepresented in the literature. This thesis investigates twelve male Western Muslim expatriate university teachers in a Preparatory Year English language programme in Saudi Arabia. The aim of this study is to investigate teachers’ perceptions of educational leadership in a northern city in Saudi Arabia. It aims to gain insights into how perceptions are influenced by culture, the context and participants’ belief systems. This qualitative study I conducted interviews with 12 teachers. Data gathered revealed three main factors that influenced participants’ perceptions of educational leadership. These were themed around sociocultural, institutional, and individual influences. From a sociocultural perspective, key influences included perceived Islamic expectations, favouritism (known as ‘wasta’ in Arabic) and the concept of tribal affiliations. From an institutional perspective, evidence emerged of oppression, power distance and voice. Individual perspectives revealed that perceptions were influenced by how the institute was led, and how communication should be more inclusive. For many, what they described as a good leader mirrored the characteristics of the transformational leader. Findings revealed that context and culture were paramount to framing, shaping, and establishing participants’ perceptions. I argue that the lack of cultural awareness on both the part of the leaders and teachers, impacts teachers’ perceptions. A certain cultural shift needs to be made in terms of the participants’ expectations of leadership. This emerges as a key factor, when arguing that leadership is culturally defined.
Nuclear Modification Factor in Semi-leptonic Heavy Flavor decays in 200 GeV Au+Au Collisions
Creators: name: Egdemir, Jamil Enis
Publisher: name: Zenodo
Year: 2005
Subjects: photonic
non-photonic
nuclear modification factors
elliptic flow
fragmentation function
pythia

description: This thesis summarizes the analysis of non-photonic single elec­trons from Au-Au collisions at √sNN = 200GeV at RHIC Run-2. From the fully corrected inclusive electron spectra in various Au-Au centrality classes, we subtract background cocktails of elec­trons, from photonic sources. The remaining non-photonic elec­trons originate from heavy flavor decays. With the corresponding measurement from p + p collisions at 200 GeV as reference, we calculate the nuclear modification factor Raa as function of px in various Au + Au centrality classes.
Catalan Recursion on Externally Ordered Bases of Unit Interval Positroids
Creators: name: Camacho, Jan Tracy
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The Catalan numbers form a sequence that counts over 200 combinatorial objects. A remarkable property of the Catalan numbers, which extends to these objects, is its recursive definition; that is, we can determine the $n^{th}$ object from previous ones. Matroids are combinatorial objects that generalize the notion of linear independence and have connections with other fields of mathematics. A family of matroids, called unit interval positroids (UIP), are Catalan objects induced by the antiadjacency matrices of unit interval orders. Associated to each UIP is the set of externally ordered bases, which due to Las Vergnas, produces a lattice after adjoining a bottom element. We study the poset of externally ordered UIP bases and the implied Catalan-induced recursion. Explicitly, we describe an algorithm for constructing the lattice of a rank $n$ UIP from the lattice of lower ranks. Using their inherent combinatorial structure, we define a simple formula to enumerate the bases for a given UIP.
description: 12 pages, 7 figures
Economic Impact of Tennessee Forest Product Exports in 2021
Creators: name: Muhammad, Andrew
name: Hellwinckel, Chad M.
name: Nzayiramya, Savant
name: Taylor, Adam
name: Muhammad, Andrew
name: Hellwinckel, Chad M.
name: Nzayiramya, Savant
name: Taylor, Adam
Publisher: name: Unknown
Year: 2023
Subjects: subject: Demand and Price Analysis
subject: International Relations/Trade
subject: Resource /Energy Economics and Policy
subject: exports
subject: economic impact
subject: forest products
subject: Tennessee

description: U.S. forest product exports were negatively impacted by the U.S. trade war with China in 2018 and 2019, and the COVID-19 pandemic in 2020. Muhammad and Taylor (2020) note that the pandemic had a significant impact on U.S. and Tennessee forest product exports due to supply and demand disruptions in the global market for finished wood products (e.g., furniture) and the interrelated market for raw materials and inputs (e.g., logs and lumber). These effects were in addition to the negative impact of China’s retaliatory tariffs on U.S. timber (Muhammad et al., 2022). In 2021, U.S. companies expected a recovery due to the U.S. Phase One Trade Agreement with China signed on January 2020, which included exemptions from related retaliatory tariff for forest products shipped to China (Inouye, 2020). In addition, the lifting of pandemic-imposed measures such as port closures and shutdowns in construction and manufacturing suggested a recovery for U.S. exports overall (Susskind and Vines, 2020). In this report, we focus on the post-pandemic period and its impacts on Tennessee forest product exports. We examine the export changes in 2021 (relative to 2020) across destination countries and product categories, and further assess the full economic impact of export sales on income and jobs at the state level. The impacts of the trade war and the COVID-19 pandemic on U.S. and Tennessee forestry exports have been discussed in previous reports (Muhammad and Taylor, 2020; Muhammad and Smith, 2020; and Muhammad et al., 2022). Forest product exports from 2018 to 2021 at the national, regional and state level are reported in Table 1. From 2018 to 2020, U.S. forest product exports decreased by $2.2 billion. In 2021, however, exports increased by $2.1 billion when compared to the previous year. The increase was mostly in southern states ($829 million), followed by Western states ($677 million). The gains in 2021 were a welcomed recovery from the decrease in exports the previous years.
Design of a novel photonic crystal 1.31/1.55 µm bi-band filter for near infrared application
Creators: name: Lallam, Farah
name: Badaoui, Hadjira
name: Abri, Mehadji
name: Fedaouche, Amal
Publisher: name: The Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Poland
Year: 2018
Subjects: finite-difference time-domain (FDTD), photonic crystals, waveguide W1KA, selective filters

description: OPTICA APPLICATA; 03/2018; ISSN 1429-7507
title: Этнологическая экспертиза как элемент обеспечения прав коренных малочисленных народов Севера, Сибири и Дальнего Востока в условиях промышленного освоения Севера России
title: Ethnological expertise as element of ensuring rights of indigenous peoples of the North, Siberia and the Far East in conditions of industrial development of the North of Russia
Creators: name: Мартынов, Евгений Леонидович
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье рассмотрены особенности и практика проведения этнологической экспертизы в местах исконной среды обитания коренных малочисленных народов Севера, Сибири и Дальнего Востока. Учитывая, что освоение недр на северных и арктических территориях России в настоящее время стало основным направлением деятельности нефтегазодобывающих и энергетических компаний, проблемы сохранения, дальнейшего развития и обеспечения прав коренных народов, проживающих на указанных территориях, активно обсуждаются в экспертном сообществе. Автором рассмотрены правовые основания проведения этнологической экспертизы, международные стандарты правового регулирования данного вопроса, изучен опыт субъектов Российской Федерации, приступивших к ее проведению. Предпринята попытка по выявлению положительных сторон и рисков проведения этнологической экспертизы, а также проанализирована проблема противодействия коренных народов ее результатам. Сделаны выводы о необходимости принятия федерального закона об этнологической экспертизе и внесения сопутствующих изменений в федеральное и региональное экологическое законодательство. Помимо прочего, определены причины недоверия коренных народов результатам этнологической экспертизы и представлен возможный вариант решения этой проблемы.
description: The article discusses the features and practice of ethnological expertise in the primordial living environment of the indigenous peoples of the North, Siberia and the Far East. Considering that the development of mineral resources in the northern and arctic territories of Russia has now become the main activity of oil and gas producing and energy companies, the problem of preserving, further developing and ensuring the rights of indigenous peoples living in these territories is actively discussed in the expert community. The author examines the legal basis for providing ethnological expertise, international standards of legal regulation of this issue, and analyzes the experience of the constituent entities of the Russian Federation, which have it. An attempt to identify the positive aspects and risks for having ethnological expertise is made, and the problem of the opposition of indigenous peoples to the results of such examination is also analyzed. The author concludes that it is necessary to adopt a federal law on ethnological expertise and introduce related changes to federal and regional environmental legislation. The reasons for the distrust of indigenous peoples to the results of ethnological expertise are identified, as well as a possible solution to this problem is presented.
title: Materials Processing Technology: Part 1
Creators: name: ELS IPR BOOKS
Publisher: name: Саратовский государственный технический университет имени Ю.А. Гагарина, ЭБС АСВ
Year: 2020

description: В учебном пособии раскрыты особенности строения и свойства конструкционных материалов, применяемых в машиностроении, методы их испытаний и исследований, а также современные технологии обработки, включая прокатку, литье, сварку, электрофизические и электрохимические методы формообразования. В пособии приведены методы и устройства автоматизации технологических процессов с использованием современных интеллектуальных подходов на основе нейронных сетей и нечетких множеств. Рассмотрены методы моделирования, разработанные авторами в процессе их научно-технической деятельности. Учебное пособие предназначено для студентов технических вузов машиностроительных специальностей и направлений подготовки, а также для научных работников и практических специалистов, осваивающих современные технологии обработки материалов совместно с зарубежными инженерами. Книга может быть полезна для ускоренной подготовки краткого доклада, выступления или презентации на английском языке технического профиля на основе использования имеющихся в пособии материалов.
Defect solitons supported by kagome photonic latticesin biased photovoltaic-photorefractive crystals
Creators: name: Hui, Juanli
name: Lu, Keqing
name: Zhao, Chong
name: Gao, Lixu
name: Chen, Weijun
Publisher: name: The Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Poland
Year: 2018
Subjects: defect solitons, photonic lattices, photorefractive nonlinearity, nonlinear optics

description: OPTICA APPLICATA; 03/2018; ISSN 1429-7507
title: Правовые основы трансплантологии
title: Legal issues of transplantology
Creators: name: Несмеянова, Светлана Эдуардовна
name: Калинина, Екатерина Геннадьевна
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье рассмотрены практические проблемы трансплантологии в Российской Федерации, связанные с несовершенством правового регулирования. Отмечено, что российский законодатель относительно недавно стал регулировать вопросы трансплантологии, определив свой подход к вопросу о согласии на донорство. Обоснована необходимость развития правового регулирования данной сферы. Отдельно обозначены уязвимые аспекты для становления и развития детского донорства и трансплантации детских органов в России.
description: The article describes practical problems related to the imperfection of legal regulation of transplantology in the Russian Federation. It is noted that the Russian legislation has relatively recently begun regulating organ transplantation after defining the issue of organ donation consent. The need for the development of this sphere is substantiated. The authors also identify some vulnerable aspects for the development of pediatric organ donation and transplantation in Russia.
Telecommunication filter based on the symmetrical photonic crystal Bg5/Cu1/Bg5
Creators: name: Baraket, Zina
name: Zaghdoudi, Jihene
name: Kanzari, Mounir
Publisher: name: The Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Poland
Year: 2018
Subjects: symmetry, telecommunication, photonic crystals

description: OPTICA APPLICATA; 03/2018; ISSN 1429-7507
Uniform subsequential estimates on weakly null sequences
Creators: name: Brixey, M.
name: Causey, R. M.
name: Frankart, P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We provide a generalization of two results of Knaust and Odell from \cite{KO2} and \cite{KO}. We prove that if $X$ is a Banach space and $(g_n)_{n=1}^\infty$ is a right dominant Schauder basis such that every normalized, weakly null sequence in $X$ admits a subsequence dominated by a subsequence of $(g_n)_{n=1}^\infty$, then there exists a constant $C$ such that every normalized, weakly null sequence in $X$ admits a subsequence $C$-dominated by a subsequence of $(g_n)_{n=1}^\infty$. We also prove that if every spreading model generated by a normalized, weakly null sequence in $X$ is dominated by some spreading model generated by a subsequence of $(g_n)_{n=1}^\infty$, then there exists $C$ such that every spreading model generated by a normalized, weakly null sequence in $X$ is $C$-dominated by every spreading model generated by a subsequence of $(g_n)_{n=1}^\infty$. We also prove a single, ordinal-quantified result which unifies and interpolates between these two results.
Focusing of linearly polarized helico-conical Lorentz beam with sine-azimuthal variation wavefront
Creators: name: Bao, Ying
name: Lan, Jingheng
name: Miao, Yu
name: Zhang, Dawei
name: Gao, Xiumin
Publisher: name: The Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Poland
Year: 2018
Subjects: Lorentz beam, focusing properties, optical vortex

description: OPTICA APPLICATA; 03/2018; ISSN 1429-7507
Degree and height estimates for modular equations on PEL Shimura varieties
Creators: name: Kieffer, Jean
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We define modular equations in the setting of PEL Shimura varieties as equations describing Hecke correspondences, and prove upper bounds on their degrees and heights. This extends known results about elliptic modular polynomials, and implies complexity bounds for number-theoretic algorithms using these modular equations. In particular, we obtain tight degree bounds for modular equations of Siegel and Hilbert type for abelian surfaces.
description: Final version to appear in the Journal of the London Mathematical Society
title: Правовое регулирование краудфандинга как инвестиционной деятельности в Республике Беларусь
title: Legal regulation of crowdfunding as an investment activity in the Republic of Belarus
Creators: name: Парукова, Екатерина Вячеславовна
Publisher: name: Издательский центр СурГУ
Year: 2020

description: В статье проанализирована специфика правового регулирования краудфандинга в Республике Беларусь и иных странах, в том числе в Российской Федерации. Изучены подходы участников краудфандинговых отношений к их правовому регулированию, обусловленные отсутствием правовых норм, непосредственно регламентирующих данные отношения, что вынуждает руководствоваться общими нормами обязательственного права прямо либо по аналогии. Высказано предположение о целесообразности точной правовой регламентации краудфандинговых правоотношений, внесения соответствующих изменений в нормы инвестиционного законодательства, а именно закрепления краудфандинга в качестве способа осуществления инвестиций, что будет содействовать развитию бизнеса и перспективных отраслей экономики страны, положительным образом скажется на инвестиционном климате и инвестиционной привлекательности государства.
description: The article analyzes the legal regulation of crowdfunding in the Republic of Belarus and other countries including the Russian Federation. The absence of legal norms regulating the crowdfunding relations forces the participants of these legal relations to be guided by the general rules of law of obligations directly or on the basis of analogy. The proposed legal regulation of these relations will contribute to the development of business and promising branches of the economy of the state and will have a positive effect on the investment climate and investment attractiveness of the Republic of Belarus as well.
Tight focusing of radially polarized beams by a devil’s vortex lens
Creators: name: Chen, Ziyang
name: Hu, Xiansheng
name: Chen, Xudong
name: Wang, Xiaoyan
name: Pu, Jixiong
Publisher: name: The Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology, Poland
Year: 2018
Subjects: devil’s vortex lens, radially polarized beam, tight focusing, high numerical aperture

description: OPTICA APPLICATA; 03/2018; ISSN 1429-7507
admcycles -- a Sage package for calculations in the tautological ring of the moduli space of stable curves
Creators: name: Delecroix, Vincent
name: Schmitt, Johannes
name: van Zelm, Jason
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H10, 97N80

description: The tautological ring of the moduli space of stable curves has been studied extensively in the last decades. We present a SageMath implementation of many core features of this ring. This includes lists of generators and their products, intersection numbers and verification of tautological relations. Maps between tautological rings induced by functoriality, that is pushforwards and pullbacks under gluing and forgetful maps, are implemented. Furthermore, many interesting cycle classes, such as the double ramification cycles, strata of k-differentials and hyperelliptic or bielliptic cycles are available. In this paper we show how to apply the package, including concrete example computations.
title: Materials Processing Technology: Part 2
Creators: name: ELS IPR BOOKS
Publisher: name: Саратовский государственный технический университет имени Ю.А. Гагарина, ЭБС АСВ
Year: 2020

description: Учебное пособие имеет единую структуру. Состоит из двух частей: Tutorial (информационно-обучающее учебное пособие) и Coursebook (учебник). В Tutorial раскрыты особенности строения и свойства конструкционных материалов, применяемых в машиностроении, методы их испытаний и исследований, а также современные технологии обработки, включая прокатку, литье, сварку, электрофизические и электрохимические методы формообразования; приведены методы и устройства автоматизации технологических процессов с использованием современных интеллектуальных подходов на основе нейронных сетей и нечетких множеств; рассмотрены методы моделирования, разработанные авторами в процессе их научно-технической деятельности. Coursebook включает семь уроков, которые сопровождаются текстами, блоком лексико-грамматических и аудио упражнений, а также тестовыми заданиями к ним. Целью учебного пособия является формирование и развитие компетенций, необходимых для использования английского языка в сфере профессионального общения. Пособие позволяет развить навыки коммуникативного чтения научной литературы, устной и письменной научной речи, расширить словарный запас за счет общенаучной и специальной лексики, отработать характерные для научного текста грамматические явления английского языка. В пособии содержатся оригинальные научные и научно-популярные тексты, способствующие расширению кругозора обучающихся. Учебное пособие предназначено для студентов технических вузов машиностроительных специальностей и направлений подготовки, а также для научных работников и практических специалистов, осваивающих современные технологии обработки материалов совместно с зарубежными инженерами. Пособие издается с аудиоприложением в электронном виде.
Kirby-Thompson distance for trisections of knotted surfaces
Creators: name: Blair, Ryan
name: Campisi, Marion
name: Taylor, Scott A.
name: Tomova, Maggy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We adapt work of Kirby-Thompson and Zupan to define an integer invariant $\mathcal{L}(\mathcal{T})$ of a bridge trisection $\mathcal{T}$ of a smooth surface $\mathcal{K}$ in $S^4$ or $B^4$. We show that when $\mathcal{L}(\mathcal{T})=0$, then the surface $\mathcal{K}$ is unknotted. We also show show that for a trisection $\mathcal{T}$ of an irreducible surface, bridge number produces a lower bound for $\mathcal{L}(\mathcal{T})$. Consequently, $\mathcal{L}$ can be arbitrarily large.