cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Optimization Approach for Long-Term Planning of Charging Infrastructure for Fixed-Route Transportation Systems
Creators: name: Blat Belmonte, Benjamin Daniel
name: Rinderknecht, Stephan
Publisher: name: MDPI
Year: 2025

description: As the electrification of the transportation sector advances, fleet operators have to rethink their approach regarding fleet management against the background of limiting factors, such as a reduced range or extended recharging times. Charging infrastructure plays a critical role, and it is worthwhile to consider its planning as an integral part for the long-term operation of an electric vehicle fleet. In the category of fixed route transportation systems, the predictable character of the routes can be exploited when planning charging infrastructure. After a prior categorization of stakeholders and their respective optimization objectives in the sector coupling domain, a cost optimization framework for fixed route transportation systems is presented as the main contribution of this work. We confirm previous literature in that there is no one-fits-all optimization method for this kind of problem. The method is tested on seven scenarios for the public transport operator of Darmstadt, Germany. The core optimization is formulated as a mixed integer linear programming (MILP) problem. All scenarios are terminated by the criterion of a maximum solving time of 48 h and provide feasible solutions with a relative MIP-gap between 7 and 24%.
Additional file 1 of Design and user experience testing of a polygenic score report: a qualitative study of prospective users
Creators: name: Brockman, Deanna G.
name: Petronio, Lia
name: Dron, Jacqueline S.
name: Kwon, Bum Chul
name: Vosburg, Trish
name: Nip, Lisa
name: Tang, Andrew
name: O’Reilly, Mary
name: Lennon, Niall
name: Wong, Bang
name: Ng, Kenney
name: Huang, Katherine H.
name: Fahed, Akl C.
name: Khera, Amit V.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Interview Guide.
Manifestation of geometric resonance in current dependence of AC susceptibility for unshunted array of Nb-AlOx-Nb Josephson junctions
Creators: name: Rivera, V. A. G.
name: Sergeenkov, S.
name: Marega, E.
name: Araujo-Moreira, F. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A pronounced resonance-like structure has been observed in the current dependence of AC susceptibility for two-dimensional array of unshunted Nb-AlOx-Nb Josephson junctions. Using a single-plaquette approximation, we were able to successfully fit our data assuming that resonance structure is related to the geometric (inductive) properties of the array.
description: to appear in Physica C (in press)
Improving the quality of crop residues by the reduction of ash content and inorganic constituents
Creators: name: Peng, Yige
Publisher: name: University of British Columbia
Year: 2019

description: Fuel pellet producers in Canada have started to consider alternative feedstocks that include agricultural crop residues. Yet, the higher ash content and inorganic constituents of crop residues can impose problems on the equipment, the quality of products, and the environment due to air emission. In this study, mechanical size fractionation in combination with leaching was conducted to improve the quality of crop residues by reducing the ash content to target value of 6% db following the applicable standard. Experimental results of mechanical size fractionation suggest that the finest fraction of ground crop residues had much higher ash contents than the coarser fractions. Results also indicate that size fractionation can reduce the need for leaching as ash removal technique, and it is most effective for corn stover when compared to canola straw and wheat straw. For the leaching tests, the leaching performance is affected by the leaching conditions whereas particle size can have some impact. Under the same leaching conditions, non-fractionated ground crop residues with larger average particle size had higher ash removal efficiency than the finest fraction of crop residues. Among the three species of crop residues, canola straw was found to have the best leaching performance, regardless of whether mechanical size fractionation was used prior to leaching. Canola straw had the highest ash removal efficiencies, K₂O removal efficiency (greater than 90%) and SiO₂ removal efficiency (more than 50%). The results also demonstrate that the effect of leaching temperature on K₂O removal efficiency is negligible while SiO₂ removal efficiency increases significantly as water temperature increases from 25 to 45 °C upon leaching for 12 h. A preliminary cost analysis was performed to estimate the total production cost (TPC) of agro-pellets based on different process designs with respect to the ash removal techniques. TPC for the base case of pellet production without ash removal pretreatment was estimated to be US$102/dry tonne (dt) pellets, and it would increase by 30% to US$133/dt for Option 1 (pretreatment by mechanical size fraction plus water leaching) and increase by 66% to US$169/dt for Option 2 (pretreatment by water leaching only).
Large scale analysis of gender bias and sexism in song lyrics
Creators: name: Betti, Lorenzo
name: Abrate, Carlo
name: Kaltenbrunner, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computers and Society (cs.CY)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We employ Natural Language Processing techniques to analyse 377808 English song lyrics from the "Two Million Song Database" corpus, focusing on the expression of sexism across five decades (1960-2010) and the measurement of gender biases. Using a sexism classifier, we identify sexist lyrics at a larger scale than previous studies using small samples of manually annotated popular songs. Furthermore, we reveal gender biases by measuring associations in word embeddings learned on song lyrics. We find sexist content to increase across time, especially from male artists and for popular songs appearing in Billboard charts. Songs are also shown to contain different language biases depending on the gender of the performer, with male solo artist songs containing more and stronger biases. This is the first large scale analysis of this type, giving insights into language usage in such an influential part of popular culture.
Impact of the recent results by the CMS and ATLAS Collaborations at the CERN Large Hadron Collider on an effective Minimal Supersymmetric extension of the Standard Model
Creators: name: Scopel, S.
name: Choi, S.
name: Fornengo, N.
name: Bottino, A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We discuss the impact for light neutralinos in an effective Minimal Supersymmetric extension of the Standard Model of the recent results presented by the CMS and ATLAS Collaborations at the CERN Large Hadron Collider for a search of supersymmetry in proton-proton collisions at a center-of-mass energy of 7 TeV with an integrated luminosity of 35 inverse pb. We find that, in the specific case of light neutralinos, efficiencies for the specific signature searched by ATLAS (jets+missing transverse energy and an isolated lepton) imply a lower sensitivity compared to CMS (which searches for jets +missing transverse energy). Focusing on the CMS bound, if squark soft masses of the three families are assumed to be degenerate, the combination of the ensuing constraint on squark and gluino masses with the experimental limit on the b to s + gamma decay imply a lower bound on the neutralino mass that can reach the value of 11.9 GeV, depending on the gluino mass. On the other hand, when the universality condition among squark soft parameters is relaxed, the lower bound on the neutralino mass is not constrained by the CMS measurement and then remains at the value 7.5 GeV derived in previous papers.
description: 6 pages, 6 figures, typeset with ReVTeX4. A version of the paper with full resolution figures can be found at http://www.to.infn.it/~scopel/cms_mssm2.pdf
Many-body cavity quantum electrodynamics with driven inhomogeneous emitters
Creators: name: Lei, Mi
name: Fukumori, Rikuto
name: Rochman, Jake
name: Zhu, Bihui
name: Endres, Manuel
name: Choi, Joonhee
name: Faraon, Andrei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Quantum emitters coupled to optical resonators are quintessential systems for exploring fundamental phenomena in cavity quantum electrodynamics (cQED) and are commonly used in quantum devices acting as qubits, memories and transducers. Many previous experimental cQED studies have focused on regimes in which a small number of identical emitters interact with a weak external drive, such that the system can be described with simple, effective models. However, the dynamics of a disordered, many-body quantum system subject to a strong drive have not been fully explored, despite its importance and potential in quantum applications. Here we study how a large, inhomogeneously broadened ensemble of solid-state emitters coupled with high cooperativity to a nanophotonic resonator behaves under strong excitation. We discover a sharp, collectively induced transparency (CIT) in the cavity reflection spectrum, resulting from quantum interference and collective response induced by the interplay between driven inhomogeneous emitters and cavity photons. Furthermore, coherent excitation within the CIT window leads to highly nonlinear optical emission, spanning from fast superradiance to slow subradiance. These phenomena in the many-body cQED regime enable new mechanisms for achieving slow light and frequency referencing, pave a way towards solid-state superradiant lasers and inform the development of ensemble-based quantum interconnects.
description: ML and RF contributed equally to this work
Additional file 2 of Design and user experience testing of a polygenic score report: a qualitative study of prospective users
Creators: name: Brockman, Deanna G.
name: Petronio, Lia
name: Dron, Jacqueline S.
name: Kwon, Bum Chul
name: Vosburg, Trish
name: Nip, Lisa
name: Tang, Andrew
name: O’Reilly, Mary
name: Lennon, Niall
name: Wong, Bang
name: Ng, Kenney
name: Huang, Katherine H.
name: Fahed, Akl C.
name: Khera, Amit V.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2: Revised polygenic score reports for coronary artery disease. A. Page one of ‘significantly increased risk’ report. B. Page one of ‘average risk’ report. C. Page one of ‘significantly decreased risk’ report. D. Page two of all reports. All reports consist of five sections: (1) Participant information, (2) Participant score, (3) ‘What is a polygenic score?’ (4) ‘What is coronary artery disease?’ and (5) ‘How can I reduce my risk of coronary artery disease?’
The Tate–Shafarevich Group of Elliptic Curves: Structure, Obstruction, and the Shadow Within the Birch and Swinnerton-Dyer Conjecture
Creators: name: McCormick, Andre
name: Seneca, Sol
Publisher: name: Zenodo
Year: 2025

description: This paper offers a rigorous yet philosophically rich exploration of the Tate–Shafarevich group (Ш) in the arithmetic of elliptic curves over ℚ. Defined cohomologically as a kernel reflecting local-global failure, Sha plays a crucial role in the Birch and Swinnerton-Dyer (BSD) conjecture, appearing in its central identity.

Beyond formal definition, the paper investigates Sha as a symbolic and metaphysical entity—a cohomological "ghost" that marks the boundary between solvability and mystery. We present numerical behaviors, discuss the implications of its conjectured finiteness, and introduce new language for interpreting Sha not only as an obstruction but as a witness to the limits of reductionist reasoning in modern number theory.

This work is intended as a foundation for deeper engagement with the BSD conjecture, and a companion to the author's prior numerical study, Numerical Exploration of the BSD Conjecture Through 12 Verified Elliptic Curves.
Inferring the heritability of bacterial traits in the era of machine learning
Creators: name: Mai, The Tien
name: Lees, John A
name: Gladstone, Rebecca A
name: Corander, Jukka
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applications (stat.AP)
subject: Genomics (q-bio.GN)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Quantification of heritability is a fundamental desideratum in genetics, which allows an assessment of the contribution of additive genetic variation to the variability of a trait of interest. The traditional computational approaches for assessing the heritability of a trait have been developed in the field of quantitative genetics. However, the rise of modern population genomics with large sample sizes has led to the development of several new machine learning based approaches to inferring heritability. In this paper, we systematically summarize recent advances in machine learning which can be used to infer heritability. We focus on an application of these methods to bacterial genomes, where heritability plays a key role in understanding phenotypes such as antibiotic resistance and virulence, which are particularly important due to the rising frequency of antimicrobial resistance. By designing a heritability model incorporating realistic patterns of genome-wide linkage disequilibrium for a frequently recombining bacterial pathogen, we test the performance of a wide spectrum of different inference methods, including also GCTA. In addition to the synthetic data benchmark, we present a comparison of the methods for antibiotic resistance traits for multiple bacterial pathogens. Insights from the benchmarking and real data analyses indicate a highly variable performance of the different methods and suggest that heritability inference would likely benefit from tailoring of the methods to the specific genetic architecture of the target organism.
title: The Transference of Traditional American Indian Oral Narratives into Contemporary Literature
Creators: name: Baisley, Barbara A.
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1995

description: This thesis will examine Native American oral narratives and determine what influence western culture has had on the written recording of these stories. By examining traditional literature, I will analyze a trickster myth in order to establish Native American literary patterns. I will then examine Henry Schoolcraft's translations of Chippewa oral narratives and determine what is characteristic of Native American oral narratives and what alterations he made in order to market these narratives to an audience deeply entrenched in western literature.

I will also distinguish between Native American narratives translated into English and English narratives that contain an Native American subject but are devoid of any characteristics of Native American narratives. While examining transitional Native American literature, I will analyze John G. Neihardt's Black Elk Speaks and attempt to distinguish what are Black Elk's intentions in sharing this vision with the world and how does it differ from the author' own literary agenda. I will also compare Neihardt's success in accurately translating an Native American oral narrative with Schoolcraft's earlier efforts.

The translation from Native American to English demonstrates how western literary conventions are imposed on Native American literature and also how the Native American literature's own rules are disregarded. Consequently, the richness and meaning of the narratives are lost. However, much modern literature is being composed by American Indians who are aware of the rules regarding Native American narratives and follow these Native American literary traditions as they compose their narrative in English. This thesis will attempt to conclude how successfully each of the preservers of Native American literature conveys the intended purpose of Native American narratives.
Radial seismic metamaterials for the attenuation of Lamb and surface waves
Creators: name: , Jia
Publisher: name: figshare
Year: 2020
Subjects: subject: 90504 Earthquake Engineering
subject: FOS: Civil engineering

description: Radial seismic metamaterials for the attenuation of Lamb and surface waves (Data Source of Paper Picture)
Wax ester production in Rhodococus
Creators: name: Round, James
Publisher: name: University of British Columbia
Year: 2020

description: Rhodococcus is a genus of soil bacteria that are among the best-studied oleaginous bacteria, and have considerable potential for the sustainable production of lipid-based chemicals. Herein, I characterized the biosynthesis of wax esters (WEs) in Rhodococcus jostii RHA1 and created tools to develop the biocatalytic potential of rhodococci. In Section 3.1, I established that RHA1 produces WEs and identified key enzymes involved in this production. Specifically, RHA1 produced WEs to 0.0002% of cellular dry weight (CDW) during exponential growth on glucose. These WEs contained 31 to 34 carbon atoms and were saturated. Bioinformatics revealed that RHA1 contains a putative fatty acyl-CoA reductase (FcrA). Purified FcrA catalyzed the NADPH-dependent transformation of stearoyl-CoA to stearyl alcohol with a specific activity of 45±3 nmol/mg∙min and dodecanal to dodecanol with a specific activity of 5300±300 nmol/mg∙min. A strain of RHA1 overproducing FcrA accumulated WEs to ~13% CDW. In Section 3.2, I expanded the genetic tools available in rhodococci, creating pSYN, a modular integrative-vector. I employed this vector to identify and characterize P₁₀, a strong, potentially constitutive rhodococcal promoter. Various strength promoters were created from P₁₀, resulting in the PT₂, PT₁, and PM₆ promoters, which were 1.3-, 2.2-, and 6-fold stronger, respectively, than Pnit, a constitutive promoter previously characterized in Rhodococcus. RHA1 transformed with a single copy of fcrA under the control of these various promoters accumulated WEs. In Section 3.3, I further developed RHA1 as a WE biocatalyst. Screening a variety of enzymes identified WS2 of Marinobacter hydrocarbonoclasticus DSM 8798 as an effective wax synthase in RHA1. Cassettes for the co-expression of chromosomally integrated fcrA and ws2 were created and transformed into RHA1; resulting in a biocatalyst that accumulated WEs to greater than 15% CDW, at yields of 0.05 g/g glucose, while maintaining 80% of the specific growth rate of WT. Accumulated WEs were 29 to 38 carbon atoms in length, of which 75% were unsaturated, with a ~2:1 mix of mono- and diunsaturated species. Overall, this thesis provides insight into the biosynthesis of WEs in rhodococci and facilitates the development of this genus for biocatalytic applications, including the production of high-value neutral lipids.
Fermi LAT Observations of the Supernova Remnant W28 (G6.4-0.1)
Creators: name: LAT Collaboration
name: Abdo, A. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present detailed analysis of the two gamma-ray sources,1FGL J1801.3-2322c and 1FGL J1800.5-2359c,that have been found toward the supernova remnant(SNR) W28 with the Large Area Telescope(LAT) on board the Fermi Gamma-ray Space Telescope.1FGL J1801.3-2322c is found to be an extended source within the boundary of SNR W28,and to extensively overlap with the TeV gamma-ray source HESS J1801-233,which is associated with a dense molecular cloud interacting with the supernova remnant.The gamma-ray spectrum measured with LAT from 0.2--100 GeV can be described by a broken power-law function with a break of ~1GeV,and photon indices of 2.09$\pm$0.08(stat)$\pm$0.28(sys) below the break and 2.74$\pm$0.06(stat)$\pm$0.09(sys) above the break.Given the clear association between HESS J1801-233 and the shocked molecular cloud and a smoothly connected spectrum in the GeV--TeV band,we consider the origin of the gamma-ray emission in both GeV and TeV ranges to be the interaction between particles accelerated in the SNR and the molecular cloud.The decay of neutral pions produced in interactions between accelerated hadrons and dense molecular gas provide a reasonable explanation for the broadband gamma-ray spectrum. 1FGL J1800.5-2359c, located outside the southern boundary of SNR W28, cannot be resolved.An upper limit on the size of the gamma-ray emission was estimated to be ~16$'$ using events above ~2GeV under the assumption of a circular shape with uniform surface brightness. It appears to coincide with the TeV source HESS J1800-240B,which is considered to be associated with a dense molecular cloud that contains the ultra compact HII region W28A2(G5.89-0.39).We found no significant gamma-ray emission in the LAT energy band at the positions of TeV sources HESS J1800-230A and HESS J1800-230C.The LAT data for HESS J1800-230A combined with the TeV data points indicate a spectral break between 10GeV and 100GeV.
description: 23 pages, 6 figures. Accepted for publication in the Astrophysical Journal. Corresponding authors: H. Katagiri, H. Tajima, T. Tanaka, and Y. Uchiyama
Computability of simple games: A complete investigation of the sixty-four possibilities
Creators: name: Kumabe, Masahiro
name: Mihara, H. Reiju
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.4.1; F.1.1
subject: 91A12, 91A13

description: Classify simple games into sixteen "types" in terms of the four conventional axioms: monotonicity, properness, strongness, and nonweakness. Further classify them into sixty-four classes in terms of finiteness (existence of a finite carrier) and algorithmic computability. For each such class, we either show that it is empty or give an example of a game belonging to it. We observe that if a type contains an infinite game, then it contains both computable ones and noncomputable ones. This strongly suggests that computability is logically, as well as conceptually, unrelated to the conventional axioms.
description: 25 pages
A physics-based domain adaptation framework for modelling and forecasting building energy systems
Creators: name: Conti, Zack Xuereb
name: Choudhary, Ruchi
name: Magri, Luca
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: State-of-the-art machine-learning-based models are a popular choice for modeling and forecasting energy behavior in buildings because given enough data, they are good at finding spatiotemporal patterns and structures even in scenarios where the complexity prohibits analytical descriptions. However, their architecture typically does not hold physical correspondence to mechanistic structures linked with governing physical phenomena. As a result, their ability to successfully generalize for unobserved timesteps depends on the representativeness of the dynamics underlying the observed system in the data, which is difficult to guarantee in real-world engineering problems such as control and energy management in digital twins. In response, we present a framework that combines lumped-parameter models in the form of linear time-invariant (LTI) state-space models (SSMs) with unsupervised reduced-order modeling in a subspace-based domain adaptation (SDA) framework. SDA is a type of transfer-learning (TL) technique, typically adopted for exploiting labeled data from one domain to predict in a different but related target domain for which labeled data is limited. We introduce a novel SDA approach where instead of labeled data, we leverage the geometric structure of the LTI SSM governed by well-known heat transfer ordinary differential equations to forecast for unobserved timesteps beyond observed measurement data. Fundamentally, our approach geometrically aligns the physics-derived and data-derived embedded subspaces closer together. In this initial exploration, we evaluate the physics-based SDA framework on a demonstrative heat conduction scenario by varying the thermophysical properties of the source and target systems to demonstrate the transferability of mechanistic models from a physics-based domain to a data domain.
Detection of Intra-day Variability Timescales of Four High Energy Peaked Blazars with XMM-Newton
Creators: name: Gaur, Haritma
name: Gupta, Alok C.
name: Lachowicz, Pawel
name: Wiita, Paul J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We selected a sample of 24 XMM-Newton light curves (LCs) of four high energy peaked blazars, PKS 0548-322, ON 231, 1ES 1426+428 and PKS 2155-304. These data comprise continuous light curves of 7.67h to 18.97h in length. We searched for possible quasi-periodic oscillations (QPO) and intra-day variability (IDV) timescales in the LCs of these blazars. We found a likely QPO in one LC of PKS 2155-304 which was reported elsewhere (Lachowicz et al. 2009). In the remaining 23 LCs we found hints of possible weak QPOs in one LC of each of ON 231 and PKS 2155-304, but neither is statistically significant. We found IDV timescales that ranged from 15.7 ks to 46.8 ks in 8 LCs. In 13 LCs any variability timescales were longer than the length of the data. Assuming the possible weak QPO periods in the blazars PKS 2155-304 and ON 231 are real and are associated with the innermost portions of their accretion disk, we can estimate that their central black hole masses exceed 1.2 $\times$ 10$^{7}$ M$_{\odot}$. Emission models for radio-loud active galactic nuclei (AGN) that could explain our results are briefly discussed.
description: 13 emulateapj pages, 2 tables, 4 figures, accepted for publication in The Astrophysical Journal
Differential equations for the KPZ and periodic KPZ fixed points
Creators: name: Baik, Jinho
name: Prokhorov, Andrei
name: Silva, Guilherme L. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The KPZ fixed point is a 2d random field, conjectured to be the universal limiting fluctuation field for the height function of models in the KPZ universality class. Similarly, the periodic KPZ fixed point is a conjectured universal field for spatially periodic models. For both fields, their multi-point distributions in the space-time domain have been computed recently. We show that for the case of the narrow-wedge initial condition, these multi-point distributions can be expressed in terms of so-called integrable operators. We then consider a class of operators that include the ones arising from the KPZ and the periodic KPZ fixed points, and find that they are related to various matrix integrable differential equations such as coupled matrix mKdV equations, coupled matrix NLS equations with complex time, and matrix KP-II equations. When applied to the KPZ fixed points, our results extend previously known differential equations for one-point distributions and equal-time, multi-position distributions to multi-time, multi-position setup.
title: DEPRECATED: An Adaptive Partial Response Data Channel for Hard Disk Magnetic Recording
Creators: name: DARRAGH, NEIL
Publisher: name: University of Plymouth
Year: 1994

description: An adaptive data channel is proposed which is better able to deal with the variations in performance typically found in the recording components of a hard disk drive. Three such categories of variation were investigated in order to gain an understanding of their relative and absolute significance; variations over radius, along the track length, and between different head / media pairs. The variations were characterised in terms of their effects on the step-response pulse width and signal-to-noise ratio. It was found that in each of the categories investigated, significant variations could be found in both longitudinal and perpendicular recording systems which, with the exception of radial variations, were nondeterministic over different head / media pairs but were deterministic for any particular head / media pair characterised. Conventional data channel design assumes such variations are non-deterministic and is therefore designed to provide the minimum error rate performance for the worst case expected recording performance within the range of accepted manufacturing tolerance. The proposed adaptive channel works on the principle that once a particular set of recording components are assembled into the disk drive, such variations become deterministic if they are able to be characterised. Such ability is facilitated by the recent introduction of partial response signalling to hard disk magnetic recording which brings with it the discrete-time sampler and the ability of the microprocessor to analyse signals digitally much more easily than analogue domain alternatives. Simple methods of measuring the step-response pulse width and signal to noise ratio with the partial response channel's electronic components are presented. The expected error rate as a function of recording density and signal to noise ratio is derived experimentally for the PR4 and EPR4 classes of partial response. On the basis of this information and the recording performance it has measured, the adaptive channel is able to implement either PR4 or EPR4 signalling and at any data rate. The capacity advantage over the non-adaptive approach is investigated for the variables previously identified. It is concluded on the basis of this investigation that the proposed adaptive channel could provide significant manufacturing yield and capacity advantages over the non-adaptive approach for a modest increase in electronic complexity.
Progress in noncommutative function theory
Creators: name: Muhly, Paul S.
name: Solel, Baruch
Publisher: name: arXiv
Year: 2010
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L08, 46L89, 46L52, 47L30, 47L55, 47L65, 47L75

description: In this expository paper we describe the study of certain non-self-adjoint operator algebras, the Hardy algebras, and their representation theory. We view these algebras as algebras of (operator valued) functions on their spaces of representations. We will show that these spaces of representations can be parameterized as unit balls of certain $W^{*}$-correspondences and the functions can be viewed as Schur class operator functions on these balls. We will provide evidence to show that the elements in these (non commutative) Hardy algebras behave very much like bounded analytic functions and the study of these algebras should be viewed as noncommutative function theory.
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title: Industry investment project and cycle: efficiency research
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Year: 2018
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description: Ð¦ÐµÐ»ÑÑ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ° Ð² Ð¿Ð¸Ð²Ð¾Ð²Ð°ÑÐµÐ½Ð½Ð¾Ð¹ Ð¾ÑÑÐ°ÑÐ»Ð¸, ÑÐ°ÑÑÐµÑ Ð¸ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð¸Ðµ ÐµÐ³Ð¾ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¸ ÑÑÐ°Ð¿Ð¾Ð² ÑÐµÐ°Ð»Ð¸Ð·Ð°ÑÐ¸Ð¸.
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1. Ð¾Ð±Ð·Ð¾ÑÐ° Ð¿Ð¸Ð²Ð¾Ð²Ð°ÑÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÐ½ÐºÐ°;
2. Ð¸Ð·ÑÑÐµÐ½Ð¸Ðµ Ð±Ð°Ð·Ð¾Ð²ÑÑ Ð¾ÑÐ½Ð¾Ð² Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½ÑÑ Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð²;
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description: The purpose of this work is to conduct a research of the investment project in brewing industry as well as to calculate and analyze its performance cycle.
The purpose is to be fulfilled through the following objectives:
1. brewing market review;
2. investment fundamentals study;
3. Baltika Breweries LLC activity overview;
4. financial analysis of Baltika Breweries LLC;
5. Baltika Breweries LLC investment project study;
6. calculation of the investment project;
The object of this research is Baltika Breweries LLC. The subject of this research is the investment project implemented in the said company.
Based on the investment fundamentals the project has been calculated and the possible outcome has been considered.
Jet Formation in the magnetospheres of supermassive black holes: analytic solutions describing energy loss through Blandford-Znajek processes
Creators: name: Menon, Govind
name: Dermer, Charles D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper, we provide exact solutions for the extraction of energy from a rotating black hole via both the electromagnetic Poynting flux and matter currents. By appropriate choice of a radially independent poloidal function $Λ(θ)$, we find solutions where the dominant outward energy flux is along the polar axis, consistent with a jet-like collimated outflow, but also with a weaker flux of energy along the equatorial plane. Unlike all the previously obtained solutions (Blandford & Znajek (1977), Menon & Dermer (2005)), the magnetosphere is free of magnetic monopoles everywhere.
Multi-scale Modeling Approach to Acoustic Emission during Plastic Deformation
Creators: name: Kumar, Jagadish
name: Ananthakrishna, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We address the long standing problem of the origin of acoustic emission commonly observed during plastic deformation. We propose a frame-work to deal with the widely separated time scales of collective dislocation dynamics and elastic degrees of freedom to explain the nature of acoustic emission observed during the Portevin-Le Chatelier effect. The Ananthakrishna model is used as it explains most generic features of the phenomenon. Our results show that while acoustic emission bursts correlated with stress drops are well separated for the type C serrations, these bursts merge to form nearly continuous acoustic signals with overriding bursts for the propagating type A bands.
description: 4 pages, 6 figures
title: Developments in the cost of grid balancing services and the design of the European balancing market
Creators: name: Blat Belmonte, Benjamin
name: Mouratidis, Panagiotis
name: Franke, Georg
name: Rinderknecht, Stephan
Publisher: name: Elsevier
Year: 2025

description: Balancing services are traded on the balancing market, which has undergone major shifts in recent years due to external factors like the growing share of renewable energies in electricity production and the progressing electrification of society, especially in the mobility sector. This trend increases the demand for balancing services. However, market design is also changing to lower overall expenses for grid stability, which influences price volatility and overall costs for balancing services. Shorter provision times, low capacity limits, and a smaller gap between gate closure time and delivery time enable more flexible market participation of balancing service providers. This article provides an overview of the common European balancing market with a focus on Germany, including recent and upcoming regulatory changes and market design. Recent price trends highlight the importance of market design, especially provision times and price limits. The reduction of the provision time for Frequency Containment Reserve increased offered capacity per bid, and the end of the mixed price procedure in August 2019 led to a less concentrated price range for balancing energy. The introduction of the energy-only market in November 2020 shifted demand from tertiary to secondary control reserve. However, high energy prices in 2021 and 2022 have revealed the limited responsiveness of the balancing energy market. This effect will be reinforced with the exiting of coal-fired and nuclear plants from the pool of balancing service providers in the current decade. Additionally, the future development of the market depends on the integration of energy storage systems such as stationary batteries and electric vehicle batteries, including the regulatory framework.
Additional file 1 of Parental experience of the neuromotor development of children with congenital heart disease: an exploratory qualitative study
Creators: name: Mitteregger, Elena
name: Wehrli, Martina
name: Theiler, Manuela
name: Logoteta, Jana
name: Nast, Irina
name: Seliner, Brigitte
name: Latal, Beatrice
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: Computational Biology

description: Additional file 1. Interview guideline.
Characteristic energies, transition temperatures, and switching effects in clean SNS graphene nanostructures
Creators: name: Halterman, Klaus
name: Valls, Oriol T.
name: Alidoust, Mohammad
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study proximity effects in clean nanoscale superconductor-normal metal-superconductor (S$\mid$N$\mid$S) graphene heterostructures using a self-consistent numerical solution to the continuum Dirac Bogoliubov-de Gennes (DBdG) equations. We obtain results for the pair amplitude and the local density of states (DOS), as a function of doping and of the geometrical parameters determining the width of the structures. The superconducting correlations are found to penetrate the normal graphene layers even when there is extreme mismatch in the normal and superconducting doping levels, where specular Andreev reflection dominates. The local DOS exhibits peculiar features, which we discuss, arising from the Dirac cone dispersion relation and from the interplay between the superconducting and Thouless energy scales. The corresponding characteristic energies emerge in the form of resonant peaks in the local DOS, that depend strongly on the doping level, as does the energy gap, which declines sharply as the relative difference in doping between the S and N regions is reduced. We also linearize the DBdG equations and develop an essentially analytical method that determines the critical temperature $T_c$ of an \sns nanostructure self-consistently. We find that for S regions that occupy a fraction of the coherence length, $T_c$ can undergo substantial variations as a function of the relative doping. At finite temperatures and by manipulating the doping levels, the self consistent pair amplitudes reveal dramatic transitions between a superconducting and resistive normal state of the structure. Such behavior suggests the possibility of using the proposed system as a carbon-based superconducting switch, turning superconductivity on or off by tuning the relative doping levels.
description: 13 pages, figures included
Sources of residual autocorrelation in multiband task fMRI and strategies for effective mitigation
Creators: name: Parlak, Fatma
name: Pham, Damon D.
name: Spencer, Daniel A.
name: Welsh, Robert C.
name: Mejia, Amanda F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In task fMRI analysis, OLS is typically used to estimate task-induced activation in the brain. Since task fMRI residuals often exhibit temporal autocorrelation, it is common practice to perform prewhitening prior to OLS to satisfy the assumption of residual independence, equivalent to GLS. While theoretically straightforward, a major challenge in prewhitening in fMRI is accurately estimating the residual autocorrelation at each location of the brain. Assuming a global autocorrelation model, as in several fMRI software programs, may under- or over-whiten particular regions and fail to achieve nominal false positive control across the brain. Faster multiband acquisitions require more sophisticated models to capture autocorrelation, making prewhitening more difficult. These issues are becoming more critical now because of a trend towards subject-level analysis, where prewhitening has a greater impact than in group-average analyses. In this article, we first thoroughly examine the sources of residual autocorrelation in multiband task fMRI. We find that residual autocorrelation varies spatially throughout the cortex and is affected by the task, the acquisition method, modeling choices, and individual differences. Second, we evaluate the ability of different AR-based prewhitening strategies to effectively mitigate autocorrelation and control false positives. We find that allowing the prewhitening filter to vary spatially is the most important factor for successful prewhitening, even more so than increasing AR model order. To overcome the computational challenge associated with spatially variable prewhitening, we developed a computationally efficient R implementation based on parallelization and fast C++ backend code. This implementation is included in the open source R package BayesfMRI.
description: 26 pages with 1 page of appendix, 11 figures with 1 figure of supplementary figure
title: ÐÐ¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ñ Ð¾ÑÐºÑÑÑÐ¾Ð³Ð¾ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° 500 ÐºÐ ÐÐ¾Ð»Ð¶ÑÐºÐ¾Ð¹ ÐÐ­Ð¡
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Modernization of the 500 kV open switchgear of the Volzhskaya HPS
Creators: name: ÐÐµÑÐµÐ·Ð¾Ð², ÐÐ½Ð´ÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: ÐÐ¸Ð´ÑÐ¾ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÑÐ°Ð½ÑÐ¸Ð¸
Ð¢Ð¾ÐºÐ¸ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ
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Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸

description: ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð°Ð»ÑÑÐµÑÐ½Ð°ÑÐ¸Ð²Ð° Ð´ÐµÐ¹ÑÑÐ²ÑÑÑÐµÐ¼Ñ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÐÐ Ð£ 500 ÐºÐ, Ð½Ð°ÑÐ¾Ð´ÑÑÐ°ÑÑÑ Ð½Ð° ÐÐ¾Ð»Ð¶ÑÐºÐ¾Ð¹ ÐÐ­Ð¡, ÐºÐ¾ÑÐ¾ÑÐ°Ñ Ð·Ð°ÐºÐ»ÑÑÐ°ÐµÑÑÑ Ð² Ð·Ð°Ð¼ÐµÐ½Ðµ ÑÑÑÐ°ÑÐµÐ²ÑÐµÐ³Ð¾ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð½Ð° Ð¿ÑÐ¸Ð½ÑÐ¸Ð¿Ð¸Ð°Ð»ÑÐ½Ð¾ Ð½Ð¾Ð²Ð¾Ðµ ÑÐ»ÐµÐ³Ð°Ð·Ð¾Ð²Ð¾Ðµ. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð° Ð·Ð°Ð¼ÐµÐ½Ð° Ð»Ð¸Ð½Ð¸Ð¹ ÑÐ»ÐµÐºÑÑÐ¾Ð¿ÐµÑÐµÐ´Ð°ÑÐ¸ Ð¾Ñ Ð³ÐµÐ½ÐµÑÐ°ÑÐ¾ÑÐ½Ð¾Ð³Ð¾ Ð±Ð»Ð¾ÐºÐ° Ð´Ð¾ Ð·Ð´Ð°Ð½Ð¸Ñ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½Ð¾Ð³Ð¾ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° 500 ÐºÐ. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ Ð²ÑÐ±Ð¾Ñ Ð¼ÐµÑÑÐ° ÑÐ°ÑÐ¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð½Ð¾Ð²Ð¾Ð³Ð¾ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°. ÐÐ·ÑÑÐµÐ½ Ð¾Ð¿ÑÑ ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¸ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½ÑÑ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÑÑÑÐ¾Ð¹ÑÑÐ² Ñ ÑÐ»ÐµÐ³Ð°Ð·Ð¾Ð²Ð¾Ð¹ Ð¸Ð·Ð¾Ð»ÑÑÐ¸ÐµÐ¹. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ»Ð¸ ÑÐ°ÑÑÑÐ¸ÑÐ°Ð½Ñ ÑÐ¾ÐºÐ¸ ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð³Ð¾ Ð·Ð°Ð¼ÑÐºÐ°Ð½Ð¸Ñ Ð½Ð° ÑÐ¸Ð½Ð°Ñ Ð¾ÑÐºÑÑÑÐ¾Ð³Ð¾ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° 220 ÐºÐ Ð¸ 500 ÐºÐ. ÐÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð½Ð¾Ð²Ð°Ñ ÑÑÐµÐ¼Ð° Ð¿ÐµÑÐ²Ð¸ÑÐ½ÑÑ Ð¿Ð¾Ð´ÐºÐ»ÑÑÐµÐ½Ð¸Ð¹ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ½ÑÑ ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÑÑÑÐ¾Ð¹ÑÑÐ² Ñ Ð³Ð°Ð·Ð¾Ð²Ð¾Ð¹ Ð¸Ð·Ð¾Ð»ÑÑÐ¸ÐµÐ¹ 500 ÐºÐ.
description: An alternative to the existing 500 kV outdoor switchgear equipment located at the Volzhskaya hydroelectric power station is presented, which consists in replacing outdated equipment with a fundamentally new gas-insulated one. The transmission lines from the generator block to the 500 kV complete switchgear have been replaced. The location of the new switchgear has been selected. The operating experience of the gas-insulated complete switchgear has been studied. In the course 3 of the work, short-circuit currents were calculated on the tires of the 220 kV and 500 kV open switchgear. A new scheme of primary connections of complete switchgear with 500 kV gas insulation is presented.
Ultracold bosons in a synthetic periodic magnetic field: Mott phases and re-entrant superfluid-insulator transitions
Creators: name: Saha, K.
name: Sengupta, K.
name: Ray, K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study Mott phases and superfluid-insulator (SI) transitions of ultracold bosonic atoms in a two-dimensional square optical lattice at commensurate filling and in the presence of a synthetic periodic vector potential characterized by a strength $p$ and a period $l=qa$, where $q$ is an integer and $a$ is the lattice spacing. We show that the Schrödinger equation for the non-interacting bosons in the presence of such a periodic vector potential can be reduced to an one-dimensional Harper-like equation which yields $q$ energy bands. The lowest of these bands have either single or double minima whose position within the magnetic Brillouin zone can be tuned by varying $p$ for a given $q$. Using these energies and a strong-coupling expansion technique, we compute the phase diagram of these bosons in the presence of a deep optical lattice. We chart out the $p$ and $q$ dependence of the momentum distribution of the bosons in the Mott phases near the SI transitions and demonstrate that the bosons exhibit several re-entrant field-induced SI transitions for any fixed period $q$. We also predict that the superfluid density of the resultant superfluid state near such a SI transition has a periodicity $q$ ($q/2$) in real space for odd (even) $q$ and suggest experiments to test our theory.
description: 8 pages, 11 figures, v1