cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Marianne Bendl (1857-1904) Erfinderin des k.k. privilegierten Busenschützers
Creators: name: Dornhofer, Veronika
Year: 2022

description: Die Wiener Erfinderin und Unternehmerin Marianne Bendl (1857-1904), ihr Produkt, der Busenschützer, sowie ihre „k.k. privilegierte Busenschützer-Fabrik“ stehen im Zentrum dieser Forschungsarbeit. Verfolgt werden dabei biografische wie mediale Spuren ihrer Person und ihres Unternehmens. Die von Bendl ab 1892 in mehreren Länder angemeldeten Patente und der 1893 erschienene Produktkatalog werden in Verschränkung mit Matriken, Verlassenschaftsakten sowie Zeitungsinseraten und -berichten im Kontext zeitgenössischer struktureller und gesellschaftlicher Gegebenheiten und Entwicklungen analysiert. Die Einbettung dieser Quellen in Diskurse der Kleiderreform und Hygiene sowie zeitgenössische Moralvorstellungen, erlaubt zudem Rückschlüsse auf Facetten unternehmerischer Tätigkeit von Frauen und damit verbundene geschlechtsspezifische Vorstellungen. Die Handlungsspielräume Marianne Bendls, die ihr Produkt geschickt zu vermarkten wusste, werden ebenso thematisiert wie biografische Leerstellen, die aufgrund fragmentarischer Überlieferung bestehen bleiben.
description: The Viennese inventor and entrepreneur Marianne Bendl (1857-1904), her product, the „Busenschützer“ (breast protector), and her factory, the „k.k. privilegierte Busenschützer-Fabrik“, are at the centre of this thesis. The research follows the tracks of the biography and media presence of Bendl and her business. A variety of available sources — including patents Bendl held in numerous countries starting from 1892, a catalogue published in 1893, newspaper advertisements and articles, church records, and documents regarding Bendl’s estate — was analysed in the context of contemporary structural and social conditions and developments. Furthermore, linking these sources to discourses on the rational dress reform and hygiene as well as changing views on morality provides insights into the facets of women’s entrepreneurial activities and the gender-specific perceptions that affected them. This thesis addresses both Marianne Bendl’s agency, among other traits visible in her marketing skills, and the blank spaces left behind by the fragmentary traces of her life and work.
Ising model description of long range correlations in DNA sequences
Creators: name: Colliva, A.
name: Pellegrini, R.
name: Testori, A.
name: Caselle, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We model long range correlations of nucleotides in the human DNA sequence using the long range one dimensional Ising model. We show that for distances between $10^3$ and $10^6$ bp the correlations show an universal behaviour and may be described by the non-mean field limit of the long range 1d Ising model. This allows us to make some testable hypothesis on the nature of the interaction between distant portions of the DNA chain which led to the DNA structure that we observe today in higher eukaryotes.
description: 15 pages, 6 figures. Substantial changes in sect. 4.2. Some clarifications and comments added throughout the paper. Journal version
Detecting Special Nuclear Material Using Muon-Induced Neutron Emission
Creators: name: Guardincerri, E.
name: Bacon, J. D.
name: Borodzin, K.
name: Durham, J. M.
name: Fabritius, J. M.
name: Hecht, A.
name: Milner, E. C.
name: Miyadera, H.
name: Morris, C. L.
name: Perry, J. O.
name: Poulson, D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The penetrating ability of cosmic ray muons makes them an attractive probe for imaging dense materials. Here, we describe experimental results from a new technique that uses neutrons generated by cosmic-ray muons to identify the presence of special nuclear material (SNM). Neutrons emitted from SNM are used to tag muon-induced fission events in actinides and laminography is used to form images of the stopping material. This technique allows the imaging of SNM-bearing objects tagged using muon tracking detectors located above or to the side of the objects, and may have potential applications in warhead verification scenarios. During the experiment described here we did not attempt to distinguish the type or grade of the SNM.
description: accepted for publication in NIM A, LA-UR-14-21076
Trajectory and sequence analysis of administrative data
Creators: name: Rao, Ahsan Mumtaz
Publisher: name: Imperial College London
Year: 2017

description: Health policy makers struggle to curb readmission rates despite various health policies. The National Health Service is spending more than half of its healthcare budget to manage emergency inpatient admissions. There is a subgroup of patients who use disproportionately more health resources and have higher rates of unplanned hospitalisation. They are defined as high-impact users. The characteristics and long-term healthcare use of high-impact users are poorly understood. Previous methods and models to identify and predict them have not performed well. More evidence is required to assess the causes of emergency admissions among them and to investigate whether they undergo a repeated cycle of similar events that trigger their long-term use of healthcare. Trajectory modelling and sequence analysis has been used in social and psychological sciences to understand changes in behaviour in the population. It has shown to have an advantage to categorise pupils based on common developmental pathways, and identify the chronological order of events in the life of the pupils. The hypothesis of the research is that trajectory modelling and sequence analysis can be applied to epidemiological administrative data to assess use of hospital care among high-impact users. Trajectory and sequence analysis was successfully applied to various patient cohorts with different medical conditions, using both hospital and primary care administrative datasets. Within each population cohort, discrete groups of patients with independent trends of hospital care use were identified. High-impact users accounted for a significant proportion of the patient population. They had persistently high readmission rates. Significant predictors associated with high-impact users were identified. High-impact users had worse outcomes than the rest of the patient population. They had distinct common sequences of causes of readmissions compared with other groups. Cardiopulmonary conditions were the main contributors to the sequences of readmissions among high-impact users in all patient populations.
ТЕПЛОВЫЕ ПРОЦЕССЫ В ТРЕХФАЗНОЙ КАБЕЛЬНОЙ ЛИНИИ В СЕТИ С ИЗОЛИРОВАННОЙ НЕЙТРАЛЬЮ ПРИ ОДНОФАЗНЫХ ДУГОВЫХ ЗАМЫКАНИЯХ НА ЗЕМЛЮ
Creators: name: Василий Васильевич Титков
name: Александр Николаевич Лубков
name: Павел Дмитриевич Тукеев
Publisher: name: Научно-технические ведомости СПбПУ. Естественные и инженерные науки
Year: 2018
Subjects: ТЕПЛОВОЙ РЕЖИМ
КАБЕЛЬ
КАБЕЛЬНАЯ ЛИНИЯ
ИЗОЛЯЦИЯ
ДУГОВОЙ РАЗРЯД
ОЗЗ
КЗ
HEATING MODE
CABLE
CABLE LINE
INSULATION
ARC DISCHARGE
BREAKDOWN
SINGLE-PHASE GROUND FAULT

description: В работе рассматривается тепловой режим кабельной линии, в которой существует однофазное замыкание на землю (ОЗЗ), и проводится оценка масштаба разрушения кабельной конструкции, вызываемой повышением температуры в зоне повреждения. На основании модели закрытого дугового разряда была составлена система уравнений, описывающая тепловой режим кабельной линии в условиях существования ОЗЗ во времени. При помощи численного решения данной системы была получена картина теплового поля исследуемой кабельной линии во времени. На основании полученных данных были сделаны выводы относительно влияния таких параметров, как класс напряжения кабельной линии, на сценарий развития тепловых процессов, а также характерные пространственные и временные масштабы этих процессов. Сформулирован ряд рекомендаций, направленных на уменьшения вероятности развития существенного теплового повреждения кабельной конструкции в условиях возникновения ОЗЗ, способного привести к двухфазным КЗ и другим серьезным авариям.
An aptamer-based sensing platform for luteinising hormone pulsatility measurement
Creators: name: Liang, Shaolin
Publisher: name: Imperial College London
Year: 2018

description: Normal fertility in human involves highly orchestrated communication across the hypothalamic-pituitary-gonadal (HPG) axis. The pulsatile release of Luteinising Hormone (LH) is a critical element for downstream regulation of sex steroid hormone synthesis and the production of mature eggs. Changes in LH pulsatile pattern have been linked to hypothalamic dysfunction, resulting in multiple reproductive and growth disorders including Polycystic Ovary Syndrome (PCOS), Hypothalamic Amenorrhea (HA), and delayed/precocious puberty. Therefore, assessing the pulsatility of LH is important not only for academic investigation of infertility, but also for clinical decisions and monitoring of treatment. However, there is currently no clinically available tool for measuring human LH pulsatility. The immunoassay system is expensive and requires large volumes of patient blood, limiting its application for LH pulsatility monitoring. In this thesis, I propose a novel method using aptamer-enabled sensing technology to develop a device platform to measure LH pulsatility. I first generated a novel aptamer binding molecule against LH by a nitrocellulose membrane-based in vitro selection then characterised its high affinity and specific binding properties by multiple biophysical/chemical methods. I then developed a sensitive electrochemical-based detection method using this aptamer. The principal mechanism is that structure switching upon binding is associated with the electron transfer rate changes of the MB redox label. I then customised this assay to numerous device platforms under our rapid prototyping strategy including 96 well automated platform, continuous sensing platform and chip-based multiple electrode platform. The best-performing device was found to be the AELECAP (Automated ELEctroChemical Aptamer Platform) – a 96-well plate based automatic micro-wire sensing platform capable of measuring a series of low volume luteinising hormone within a short time. Clinical samples were evaluated using AELECAP. A series of clinical samples were measured including LH pulsatility profile of menopause female (high LH amplitude), normal female/male (normal LH amplitude) and female with hypothalamic amenorrhea (no LH pulsatility). Total patient numbers were 12 of each type, with 50 blood samples collected every 10 mins in 8 hours. Results showed that the system can distinguish LH pulsatile pattern among the cohorts and pulsatility profiles were consistent with the result measured by clinical assays. AELECAP shows high potential as a novel approach for clinical aptamer-based sensing. AELECAP competes with current automated immunometric assays system with lower costs, lower reagent use, and a simpler setup. There is potential for this approach to be further developed as a tool for infertility research and to assist clinicians in personalised treatment with hormonal therapy.
From specimens to the tree-of-life: tackling tropical arthropod diversity
Creators: name: Yeo, Darren
Publisher: name: Imperial College London
Year: 2018

description: After more than 250 years of trying, we still do not know the number of animal species on our planet. However, we do know that a large proportion of the unknown species are arthropods and live in the tropics. In this thesis, I explore new ways to utilize Next Generation Sequencing (NGS) technologies for fast and large-scale species discovery. I first test the performance of mini-barcodes for distance-based species delimitation and compare the performance to tree-based species delimitation. After evaluating these techniques, I utilize NGS barcodes to demonstrate that they can be used to rapidly pre-sort specimens into putative species regardless of life history stage. I then use NGS barcodes to document that mangroves are home to a previously overlooked large and distinct insect fauna. Lastly, I evaluate three different techniques for obtaining mitochondrial genomes and nuclear sequences for building species-rich trees: mitochondrial metagenomics, multiplexed tagged amplicon sequencing and hybrid enrichment.
Recurrence Relations of the Multi-Indexed Orthogonal Polynomials : II
Creators: name: Odake, Satoru
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Classical Analysis and ODEs (math.CA)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In a previous paper we presented $3+2M$ term recurrence relations with variable dependent coefficients for $M$-indexed orthogonal polynomials of Laguerre, Jacobi, Wilson and Askey-Wilson types. In this paper we present (conjectures of) the recurrence relations with constant coefficients for these multi-indexed orthogonal polynomials. The simplest recurrence relations have $3+2\ell$ terms, where $\ell (\geq M)$ is the degree of the lowest member of the multi-indexed orthogonal polynomials.
description: 27 pages. Comments, references and examples added, reference information updated. To appear in J.Math.Phys
Phylogenetic differentiation between Awassi and Hamdani sheep using the mitochondrial 12S rRNA
Creators: name: Fadhil, Israa A.
name: Al-Shuhaib, Mohammed Baqur S.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: This study was conducted to assess the role of the mitochondrial 12S rRNA variations in the phylogenetic discrimination between two Iraqi breeds of sheep that differ in geographical distribution. A total of 122 animals (68 Awassi and 54 Hamdani) were included in the study. Direct sequencing of amplicons followed by the construction of a median-joining network and several trees were performed to identify the possible phylogenetic differences between both involved breeds. Genetic diversity, relative frequencies, and analysis of molecular variance (AMOVA) were performed to assess the genetic correlation between both populations. The median-joining network and minimized tree values showed that all observed haplotypes were separated into two groups according to their breed. Comprehensive phylogenetic data revealed only one Asian ancestor for all observed haplotypes. As indicated by AMOVA, the observed diversity was mostly due to between-population variation (1.24836%), while within-population variation (0.91221%) accounted for much less. The currently investigated rRNA amplicons exhibited different mitochondrial manifestations between Awassi and Hamdani breeds. Due to the ability of these 12S rRNA amplicons to mimic the geographical diversity for the currently investigated breeds, it is highly recommended to be used as potent mitochondrial genetic markers among broader ovine sequences.
Feature Extraction and Classification from Planetary Science Datasets enabled by Machine Learning
Creators: name: Nixon, Conor
name: Yahn, Zachary
name: Duncan, Ethan
name: Neidel, Ian
name: Mills, Alyssa
name: Seignovert, Benoît
name: Larsen, Andrew
name: Gansler, Kathryn
name: Liles, Charles
name: Walker, Catherine
name: Trent, Douglas
name: Santerre, John
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this paper we present two examples of recent investigations that we have undertaken, applying Machine Learning (ML) neural networks (NN) to image datasets from outer planet missions to achieve feature recognition. Our first investigation was to recognize ice blocks (also known as rafts, plates, polygons) in the chaos regions of fractured ice on Europa. We used a transfer learning approach, adding and training new layers to an industry-standard Mask R-CNN (Region-based Convolutional Neural Network) to recognize labeled blocks in a training dataset. Subsequently, the updated model was tested against a new dataset, achieving 68% precision. In a different application, we applied the Mask R-CNN to recognize clouds on Titan, again through updated training followed by testing against new data, with a precision of 95% over 369 images. We evaluate the relative successes of our techniques and suggest how training and recognition could be further improved. The new approaches we have used for planetary datasets can further be applied to similar recognition tasks on other planets, including Earth. For imagery of outer planets in particular, the technique holds the possibility of greatly reducing the volume of returned data, via onboard identification of the most interesting image subsets, or by returning only differential data (images where changes have occurred) greatly enhancing the information content of the final data stream.
АНАЛИТИЧЕСКОЕ ИССЛЕДОВАНИЕ РЕЖИМОВ РАБОТЫ ПРОТЯЖЕННЫХ ЛИНИЙ ЭЛЕКТРОПЕРЕДАЧИ С УСТРОЙСТВАМИ ПРОДОЛЬНОЙ ЕМКОСТНОЙ КОМПЕНСАЦИИ
Creators: name: Мария Александровна Люлина
name: Георгий Анатольевич Першиков
name: Александр Александрович Смирнов
name: Андрей Николаевич Беляев
name: Сергей Владимирович Смоловик
Publisher: name: Научно-технические ведомости СПбПУ. Естественные и инженерные науки
Year: 2018
Subjects: ДАЛЬНИЕ ЛИНИИ ЭЛЕКТРОПЕРЕДАЧИ
УСТРОЙСТВО ПРОДОЛЬНОЙ КОМПЕНСАЦИИ
СТАТИЧЕСКАЯ УСТОЙЧИВОСТЬ
УПРАВЛЯЕМЫЙ ШУНТИРУЮЩИЙ РЕАКТОР
СТАТИЧЕСКИЙ ТИРИСТОРНЫЙ КОМПЕНСАТОР
LONG-DISTANCE AC TRANSMISSION SYSTEM
SERIES COMPENSATION
SHUNT CONPENSATION
OPERATING CONDITIONS
SMALL SIGNAL STABILITY
CONTROLLED SHUNT REACTOR
STATIC VAR COMPENSATOR

description: В работе проведено аналитическое исследование режимов работы линий электропередачи переменного тока с устройствами продольной компенсации (УПК). Показано, что применение УПК связано с ограничениями, определяемыми отклонениями напряжения в узлах их примыкания. Значительная реактивная мощность, генерируемая емкостью УПК при протекании рабочих токов, требует применения устройств поперечной компенсации. Полученные результаты указывают на недостатки применения УПК с большим емкостным сопротивлением, поскольку возможности повышения пропускной способности электропередачи с такой УПК ограничиваются перепадом напряжения на емкости. В случае необходимости компенсации индуктивного сопротивления протяженных ВЛ целесообразен переход к использованию нескольких УПК с уменьшенным емкостным сопротивлением каждой из них. Выполнен анализ режимов работы одной из известных компенсированных электропередач с несколькими УПК. Показано, что возможность регулирования реактивной мощности при изменении загрузки линии и возможность управления уставками УШР по напряжению способствуют существенному увеличению их пропускной способности.
Essays on investment and portfolio management of hedge funds
Creators: name: Zhang, Chao
Publisher: name: Imperial College London
Year: 2018

description: This thesis is made up of three independent chapters on hedge fund investment and portfolio management. This thesis aims to shed light on the investment skills of hedge fund managers in the U.S. stock market and convertible bond market, and the funding liquidity risk of hedge funds. Chapter 2 investigates the preference and investment skills of Equity Long/Short and Equity Market Neutral hedge fund managers in the U.S. equity market from March 1997 to December 2012. Numerical results show that equity fund managers on average prefer stocks with smaller size, higher book-to-market, one-month momentum and twelve-month reversal. This chapter shows that the aggregate holdings and trading of equity hedge funds predict stock returns. Besides, we find that equity hedge fund managers have superior stock picking ability, but no superior market timing ability. Chapter 3 studies the impact of hedge fund trading that are induced by funding liquidity shocks on stock prices. In this chapter, we show that shocks to aggregate funding liquidity lead to massive selloffs of hedge funds with fewer share restrictions and higher leverage. Besides, the selloffs of financially constrained hedge funds create price pressure in the stock market during liquidity shock periods. In sum, this chapter provides supportive evidence for the liquidity spiral model in Brunnermeier and Pedersen (2009). Chapter 4 provides an innovative analysis of the risk and returns of convertible bond arbitrage hedge funds. Consistent with previous research, this chapter reveals that a long-only convertible bond portfolio, together with a long-short convertible bond portfolio, explains the majority of convertible arbitrage hedge fund index returns. Besides, with 13F hedge fund holdings of convertible bonds, we improve the Sharpe Ratio of the long-short convertible arbitrage strategy and the explanatory power of the convertible arbitrage benchmark model.
Six-vertex model with partial domain wall boundary conditions: ferroelectric phase
Creators: name: Bleher, Pavel
name: Liechty, Karl
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We obtain an asymptotic formula for the partition function of the six-vertex model with partial domain wall boundary conditions in the ferroelectric phase region. The proof is based on a formula for the partition function involving the determinant of a matrix of mixed Vandermonde/Hankel type. This determinant can be expressed in terms of a system of discrete orthogonal polynomials, which can then be evaluated asymptotically by comparison with the Meixner polynomials.
description: 32 pages, 6 figures, minor changes in version 2
ЭЛЕКТРОФИЗИЧЕСКИЕ ХАРАКТЕРИСТИКИ БУМАЖНО-ПРОПИТАННОЙ ИЗОЛЯЦИИ ПРИ МОДИФИКАЦИИ ЦЕЛЛЮЛОЗНОЙ ОСНОВЫ БИОПОЛИМЕРОМ
Creators: name: Наталия Михайловна Журавлева
name: Дмитрий Владимирович Кизеветтер
name: Александр Сергеевич Резник
name: Екатерина Григорьевна Смирнова
name: Альберт Константинович Хрипунов
Publisher: name: Научно-технические ведомости СПбПУ. Естественные и инженерные науки
Year: 2018
Subjects: БУМАЖНО-ПРОПИТАННАЯ ИЗОЛЯЦИЯ
ЦЕЛЛЮЛОЗА
БИОПОЛИМЕР
МОДИФИКАЦИЯ
СИЛОВОЙ ТРАНСФОРМАТОР
PAPER-IMPREGNATED INSULATION
CELLULOSE
BIOPOLYMER
MODIFICATION
POWER TRANSFORMER

description: В статье рассмотрена возможность повышения электрофизических свойств и нагревостойкости целлюлозной диэлектрической бумаги (компонента высоковольтной бумажно-пропитанной изоляции) за счет использования биополимера как в качестве основы, так и для модификации материала из традиционного растительного сырья. В ходе научных исследований получены опытные образцы изоляционных бумаг, обладающие преимуществами по ряду электрофизических свойств, позволяющие повысить эксплуатационные характеристики твердого диэлектрика. Установлено влияние модификации на устойчивость твердого диэлектрика к длительному термовоздействию в среде электроизоляционной пропитывающей жидкости. Рассмотрена перспективность технологического приема дезинтегрирования биополимера, что открывает возможность его применения в промышленном производстве целлюлозных диэлектриков. Показана целесообразность создания целлюлозных диэлектриков нового поколения, отличающихся повышенными электрофизическими характеристиками, как полноценной альтернативы растительной целлюлозе, получаемой из хвойных пород древесины.
title: Berufliche Spannungsfelder freischaffender Künstler:innen und ihre Reinszenierung in der Supervision
Creators: name: Baich, Eva Magdalena
Year: 2022

description: Die vorliegende Arbeit beschäftigt sich mit klassischen Arbeitsfeldern freischaffender Künstler:innen im deutschsprachigen mitteleuropäischen Raum, den mit diesem Bereich einher-gehenden besonderen beruflichen Dynamiken, Widersprüchlichkeiten und Spannungsfeldern und deren Reinszenierung im Beratungsformat Supervision. Die zu beantwortende Forschungsfrage lautet: “Inwieweit reinszenieren sich mögliche berufliche Identitäts- und Rollenkonflikte freischaffender Künstler:innen in der Supervision?” Ausgehend von der Prämisse, dass sich mögliche Konflikte aus der Arbeitswelt in der Supervision widerspiegeln und die Arbeit mit Reinszenierungen im Beratungsformat Supervision ein nützliches Instrument ist, um unbewusste Vorgänge hinsichtlich beruflicher Konflikte unterstützend bearbeiten und klären zu können, werden zwei Einzelfallstudien aus der eigenen Praxis der Verfasserin mittels der dokumentarischen Methode ausgewertet, interpretiert und theoriegeleitet diskutiert.
Topological Yu-Shiba-Rusinov chain from spin-orbit coupling
Creators: name: Brydon, P. M. R.
name: Sarma, S. Das
name: Hui, Hoi-Yin
name: Sau, Jay D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the possibility of realizing a topological state in the impurity band formed by a chain of classical spins embedded in a two-dimensional singlet superconductor with Rashba spin-orbit coupling. In contrast to similar proposals which require a helical spin texture of the impurity spins for a nontrivial topology, here we show that spin-flip correlations due to the spin-orbit coupling in the superconductor produces a topological state for ferromagnetic alignment of the impurity spins. From the Bogoliubov-de Gennes equations we derive an effective tight-binding model for the subgap states which resembles a spinless superconductor with long-range hopping and pairing terms. We evaluate the topological invariant, and show that a topologically non-trivial state is generically present in this model.
description: published version
ВЛИЯНИЕ МЕТОДА МОДИФИЦИРОВАНИЯ ПОВЕРХНОСТИ НА ЭЛЕКТРОХИМИЧЕСКИЕ СВОЙСТВА ТИТАНА
Creators: name: Сергей Анатольевич Котов
name: Людмила Петровна Батурова
name: Анна Николаевна Бурлова
name: Екатерина Дмитриевна Зверева
Publisher: name: Научно-технические ведомости СПбПУ. Естественные и инженерные науки
Year: 2018
Subjects: КОРРОЗИОННАЯ СТОЙКОСТЬ ТИТАНА
МОДИФИКАЦИЯ ПОВЕРХНОСТИ
ЛАЗЕРНАЯ ОБРАБОТКА
АНОДНОЕ ОКСИДИРОВАНИЕ
ЭЛЕКТРОХИМИЧЕСКОЕ ПОВЕДЕНИЕ ТИТАНА В РАЗЛИЧНЫХ СРЕДАХ
RESISTANCE TO CORROSION OF TITANIUM
SURFACE MODIFICATION
LASER PROCESSING
ANODIC OXIDATION
ELECTROCHEMICAL BEHAVIOR OF TITANIUM IN VARIOUS SUBSTANCES

description: Титан обладает уникальным сочетанием высокой коррозионной стойкости и высокой удельной прочности, благодаря чему нашел широкое применение в областях, где требуется долговечность и надежность оборудования. Однако во многих условиях эксплуатации ему требуется защита от коррозии в агрессивных средах. Для этого применяют различные методы модифицирования поверхности титана и его сплавов. В работе сравнивались два метода модифицирования: анодное оксидирование и лазерная обработка. С помощью оксидирования на поверхности титана формируется инертное покрытие, снижающее выход легирующих компонентов. При лазерной обработке получается развитый рельеф поверхности, повышается микротвердость и образуется защитный оксидный слой. Показано, что лазерная обработка эффективнее повышает коррозионную стойкость титана и его сплавов в агрессивных средах.
Control of clogging in permeable concrete pavements
Creators: name: Kia, Alalea
Publisher: name: Imperial College London
Year: 2018

description: This thesis aims to improve the understanding of clogging and the effects this has on permeable concrete, and to develop new permeable concretes that are more durable and resistant to clogging without the need for frequent maintenance. Permeable concrete, also known as pervious concrete, is used to reduce urban flooding as it allows water to flow through normally impermeable infrastructure. It is prone to clogging by particulate matter and predicting the long-term performance of permeable concrete is challenging as there is currently no reliable means of characterising clogging potential. New methods were developed to study clogging and define clogging potential. The tests involved applying flowing water containing sand and/or clay in cycles, and measuring the change in permeability. Three methods were used to define clogging potential based on measuring the initial permeability decay, half-life cycle and number of cycles to full clogging. We show for the first time strong linear correlations between these parameters for a wide range of samples, indicating their use for service-life prediction. The problem which leads to clogging in existing permeable concrete is the pore network that is highly tortuous, with variable cross-section and random interconnectivity. As a result, it is important to develop new permeable concretes that have uniform pore structures with tortuosity of 1. This thesis reports on the development of cementitious materials that can be poured on-site, or provided as pre-cast elements, forming a low tortuosity connected porosity microstructure so that surface water is effectively transferred from one side of the permeable pavement to the other, with minimal risk of clogging. High-strength clogging resistant permeable pavement (CRP) was prepared by introducing direct channels of varying size and number into self-compacting mortar. In all cases, permeability and compressive strength proved to be far higher than conventional permeable concrete. More significantly, not a single sample became clogged despite extensive cyclic exposure to flow containing sand and/or clay. We show for the first time a high strength clogging resistant permeable pavement capable of retaining sufficient porosity and permeability for storm-water infiltration throughout the service life while having a high compressive strength to utilise permeable pavement in heavy loading applications. This innovative system will help alleviate urban flooding and contribute towards a more sustainable urbanisation. In order for the new design to be considered a truly successful innovation it is necessary to examine means by which the work done in a laboratory setting can be utilised in a large-scale commercial setting. Several methods have been investigated. While each of these methods has benefits and limitations, collectively they constitute a valid range of possible approaches for potential in-situ and pre-cast delivery of CRPs on a large scale.
On bounded continuous solutions of the archetypal equation with rescaling
Creators: name: Bogachev, Leonid V.
name: Derfel, Gregory
name: Molchanov, Stanislav A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Probability (math.PR)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary: 39B05, Secondary: 34K06, 39A22, 60G42, 60J05

description: The `archetypal' equation with rescaling is given by $y(x)=\iint_{\mathbb{R}^2} y(a(x-b))\,μ(\mathrm{d}a,\mathrm{d}b)$ ($x\in\mathbb{R}$), where $μ$ is a probability measure; equivalently, $y(x)=\mathbb{E}\{y(α(x-β))\}$, with random $α,β$ and $\mathbb{E}$ denoting expectation. Examples include: (i) functional equation $y(x)=\sum_{i} p_{i} y(a_i(x-b_i))$; (ii) functional-differential (`pantograph') equation $y'(x)+y(x)=\sum_{i} p_{i} y(a_i(x-c_i))$ ($p_{i}>0$, $\sum_{i} p_{i}=1$). Interpreting solutions $y(x)$ as harmonic functions of the associated Markov chain $(X_n)$, we obtain Liouville-type results asserting that any bounded continuous solution is constant. In particular, in the `critical' case $\mathbb{E}\{\ln|α|\}=0$ such a theorem holds subject to uniform continuity of $y(x)$; the latter is guaranteed under mild regularity assumptions on $β$, satisfied e.g.\ for the pantograph equation (ii). For equation (i) with $a_i=q^{m_i}$ ($m_i\in\mathbb{Z}$, $\sum_i p_i m_i=0$), the result can be proved without the uniform continuity assumption. The proofs utilize the iterated equation $y(x)=\mathbb{E}\{y(X_τ)\,|\,X_0=x\}$ (with a suitable stopping time $τ$) due to Doob's optional stopping theorem applied to the martingale $y(X_n)$.
description: Substantially revised. The title is modified
title: Урбанизация и экологическая безопасность
Creators: name: Соловьева, Дарья
name: Курочкин, Павел
name: Булин, Иван
name: Столяров, Тимофей
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2022

description: Урбанизация является неотъемлемыми интенсивным процессом развития человеческого общества. Быстрый рост городских агломераций и числа крупных городов, повышение численности городского населения и его неравномерное распределение, расширение территории городов имеют негативное влияние на социальную
среду и даже приводят к глобальным изменениям экологии нашей планеты. Приводят к загрязнению жизненно важных источников ресурсов, таких как вода и почва. Многие ученые высказывали обоснованные опасения по вопросам экологической безопасности в связи возрастанием антропогенного воздействия на биосферу. На процесс урбанизации оказывают влияния множество факторов, причиной которых, в большинстве случаев,
служит научно-технический прогресс. Следовательно, именно научно-технический прогресс является важнейшей причиной урбанизации. Также именно внедрение новых технологий позволяет устранить или частично сократить отрицательное воздействие урбанизация на экосистему.
SU(4) symmetry of the dynamical QCD string and genesis of hadron spectra
Creators: name: Glozman, L. Ya.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A large degeneracy of mesons of a given spin has recently been discovered upon reduction of the quasi-zero modes of the Dirac operator in a dynamical lattice simulation. Here a symmetry group that is responsible for this degeneracy is established, which is SU(4) \supset SU(2)_L \times SU(2)_R \times U(1)_A \times C_i. It is argued that this symmetry group is a symmetry of the dynamical QCD string. Implications of this picture for a genesis of light hadron spectra are discussed.
description: 4 pp, to appear in EPJA
ФОРМИРОВАНИЕ СТРУКТУРЫ ПРИ ГОРЯЧЕЙ ПРОКАТКЕ ЭЛЕКТРОТЕХНИЧЕСКОЙ АНИЗОТРОПНОЙ СТАЛИ
Creators: name: Александр Александрович Кононов
name: Михаил Александрович Матвеев
Publisher: name: Научно-технические ведомости СПбПУ. Естественные и инженерные науки
Year: 2018
Subjects: ЭЛЕКТРОТЕХНИЧЕСКАЯ АНИЗОТРОПНАЯ СТАЛЬ
ТЕКСТУРА ГОССА
ГОРЯЧАЯ ПРОКАТКА
ФАЗОВОЕ ПРЕВРАЩЕНИЕ
КРИСТАЛЛОГРАФИЧЕСКАЯ ТЕКСТУРА
GRAIN-ORIENTED SILICON STEEL
GOSS TEXTURE
HOT ROLLING
PHASE TRANSFORMATION
CRYSTALLOGRAPHIC TEXTURE

description: Исследованы процессы структурообразования при горячей прокатке электротехнической анизотропной стали. Показано, что формирование структуры поверхностных слоев горячекатаной полосы происходит в результате совместного действия фазового превращения γ→α и динамической рекристаллизации, центральных слоев – в результате протекания процесса возврата деформированных зерен. На основании результатов исследования установлено, что неоднородная по толщине горячекатаной полосы ЭАС структура формируется из-за неоднородного развития фазового превращения. Поверхностные слои полосы во время прокатки охлаждаются быстрее, чем центральные, вследствие чего фазовое превращение γ→α протекает в них интенсивнее. Полигональный феррит при горячей прокатке исследуемых сталей формируется в результате совместного протекания фазового превращения γ→α и динамической рекристаллизации. Поскольку в центральной части полосы фазовое превращение протекает слабо, то в них образуется деформированная структура.
title: Ich sehe Deutsch als die Brücke zum Träume an
Creators: name: Sailer, Bettina
Year: 2022

description: Knapp 37.000 Menschen lernten 2020 in Tadschikistan Deutsch als Fremdsprache, verzeichnete das Auswärtige Amt. Das Interesse an der deutschen Sprache ist groß, doch hierzulande ist kaum etwas über das zentralasiatische Land und die Motivation der DaF-Lerner:innen bekannt. Die vorliegende Forschungsarbeit widmet sich der Sprachlernmotivation von Tadschik:innen und stellt die Fragen, welche Einflussfaktoren die Entscheidung Deutsch zu lernen beeinflussen und wie diese Faktoren in Zusammenhang zueinander stehen. Ausgangspunkt der Forschung sind die gängigsten Konzepte der internationalen L2-Motivationsforschung. Dazu zählen die Unterscheidung von integrativer und instrumentaler Motivation, extrinsischer und intrinsischer Motivation, externalen und internalen Einflussfaktoren, sowie der Einbezug des L2 Motivational Self Systems und des Person-in-Context Relational Views. Ergänzt werden die theoretischen Konzepte durch die Ergebnisse der empirischen DaF-Motivationsforschung, welche maßgeblich durch die Arbeiten von Claudia Riemer geprägt sind, sowie eine Dokumentenanalyse Tadschikistans, welche die Bedingungen des Deutschlernens vor Ort fokussiert. Für die empirische Untersuchung wurden schriftlich verfasste Sprachlernbiografien von fortgeschrittenen DaF-Lerner:innen an zwei privaten Instituten in Duschanbe herangezogen. Die Analyse legt nahe, dass Tadschik:innen vor allem durch einen potentiellen Auf-enthalt im Ausland motiviert werden eine Fremdsprache zu lernen. Folgende Einflussfaktoren beeinflussen die Wahl, Deutsch als Fremdsprache zu wählen: die wirtschaftliche Lage und die Qualität des Bildungssystems Tadschikistans; das positiv besetzte Deutschlandbild; Möglichkeiten der Einreise und Bildung in DACH; Karrierechancen mit Deutschkenntnissen im In- und Ausland; das DaF-Angebot vor Ort und der Kontakt zu Personen, die bereits in DACH waren.
АВТОМАТИЗАЦИЯ ТЕХНОЛОГИЧЕСКОЙ ПОДГОТОВКИ ЕДИНИЧНОГО И МЕЛКОСЕРИЙНОГО ПРОИЗВОДСТВА
Creators: name: Ирина Николаевна Хрусталева
name: Сергей Александрович Любомудров
name: Павел Иванович Романов
Publisher: name: Научно-технические ведомости СПбПУ. Естественные и инженерные науки
Year: 2018
Subjects: АВТОМАТИЗАЦИЯ ПРОИЗВОДСТВА
СРЕДСТВА ТЕХНОЛОГИЧЕСКОГО ОСНАЩЕНИЯ
РЕЖИМЫ РЕЗАНИЯ
ТЕХНОЛОГИЧЕСКИЙ МАРШРУТ ОБРАБОТКИ
ЦЕХ МЕХАНИЧЕСКОЙ ОБРАБОТКИ
AUTOMATION OF PRODUCTION
MEANS OF TECHNOLOGICAL EQUIPMENT
CUTTING MODES
TECHNOLOGICAL ROUTE OF PROCESSING
MECHANICAL WORKSHOP

description: Описана модель автоматизации технологической подготовки мелкосерийного и единичного типов производства. На основе описанной модели производится определение оптимального варианта технологического маршрута обработки партии деталей, сроков их изготовления, величины переменных затрат, оптимальных технологических параметров процесса обработки и управление запасами склада, а также формирование номенклатуры и количества необходимых средств производства. Моделирование производится на основе математических моделей по управлению запасами склада (комбинированная модель) и определению величины переменных затрат и нормы оперативного времени. Определение оптимального варианта производится на основе мнгокритериального анализа с использованием метода «идеальной точки» по трем параметрам: величина переменных затрат на изготовление партии деталей, минимальные сроки изготовления партии деталей, длительность изготовления парии деталей.
Advancing Brain Tumor Detection: A Thorough Investigation of CNNs, Clustering, and SoftMax Classification in the Analysis of MRI Images
Creators: name: Miah, Jonayet
name: Cao, Duc M
name: Sayed3, Md Abu
name: Taluckder, Md Siam
name: Haque, Md Sabbirul
name: Mahmud, Fuad
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Brain tumors pose a significant global health challenge due to their high prevalence and mortality rates across all age groups. Detecting brain tumors at an early stage is crucial for effective treatment and patient outcomes. This study presents a comprehensive investigation into the use of Convolutional Neural Networks (CNNs) for brain tumor detection using Magnetic Resonance Imaging (MRI) images. The dataset, consisting of MRI scans from both healthy individuals and patients with brain tumors, was processed and fed into the CNN architecture. The SoftMax Fully Connected layer was employed to classify the images, achieving an accuracy of 98%. To evaluate the CNN's performance, two other classifiers, Radial Basis Function (RBF) and Decision Tree (DT), were utilized, yielding accuracy rates of 98.24% and 95.64%, respectively. The study also introduced a clustering method for feature extraction, improving CNN's accuracy. Sensitivity, Specificity, and Precision were employed alongside accuracy to comprehensively evaluate the network's performance. Notably, the SoftMax classifier demonstrated the highest accuracy among the categorizers, achieving 99.52% accuracy on test data. The presented research contributes to the growing field of deep learning in medical image analysis. The combination of CNNs and MRI data offers a promising tool for accurately detecting brain tumors, with potential implications for early diagnosis and improved patient care.
Full analysis of multi-photon pair effects in spontaneous parametric down conversion based photonic quantum information processing
Creators: name: Takeoka, Masahiro
name: Jin, Rui-Bo
name: Sasaki, Masahide
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In spontaneous parametric down conversion (SPDC) based quantum information processing (QIP) experiments, there is a tradeoff between the coincide count rates (i.e. the pumping power of the SPDC), which limits the rate of the protocol, and the visibility of the quantum interference, which limits the quality of the protocol. This tradeoff is mainly caused by the multi-photon pair emissions from the SPDCs. In theory, the problem is how to model the experiments without truncating these multi-photon emissions while including practical imperfections. In this paper, we establish a method to theoretically simulate SPDC based QIPs which fully incorporates the effect of multi-photon emissions and various practical imperfections. The key ingredient in our method is the application of the characteristic function formalism which has been used in continuous variable QIPs. We apply our method to three examples, the Hong-Ou-Mandel interference and the Einstein-Podolsky-Rosen interference experiments, and the concatenated entanglement swapping protocol. For the first two examples, we show that our theoretical results quantitatively agree with the recent experimental results. Also we provide the closed expressions for these the interference visibilities with the full multi-photon components and various imperfections. For the last example, we provide the general theoretical form of the concatenated entanglement swapping protocol in our method and show the numerical results up to 5 concatenations. Our method requires only a small computation resource (few minutes by a commercially available computer) which was not possible by the previous theoretical approach. Our method will have applications in a wide range of SPDC based QIP protocols with high accuracy and a reasonable computation resource.
description: 14 pages, 9 figures. Published version
title: "The good people" oder "Das stille Volk"
Creators: name: Koperec, Martina
Year: 2022

description: Die literarische Form des Märchens ist auch heute noch in diversen Formen omnipräsent. Im deutschsprachigen Bereich werden dabei meist vor allem die Brüder Grimm als richtungsweisend angesehen. Um die Entwicklung der Gattung nachvollziehen zu können, ist es unerlässlich sich auch mit Jonathan Crofton Croker und seiner Sammlung an irischen Märchen zu beschäftigen, da es nur aufgrund der Wechselwirkung dieser drei Sammler zu der uns heute bekannten Gattung kommen konnte. Das Ziel der vorliegenden Arbeit ist es daher eine vergleichende Analyse zwischen der Märchensammlung Crokers Fairy Legends and Traditions of the South of Ireland und den dazugehörigen Übersetzungen der Brüder Grimm aufzustellen. Im Zuge dessen soll eine Antwort auf die Fragen gefunden werden, ob es in der deutschen Übersetzung zu Veränderungen der ursprünglichen Texte kommt, worauf diese zurückzuführen sind und ob die Übersetzung Auswirkungen auf die zweite Märchensammlung Crokers hatte. Um diese Forschungsfragen beantworten zu können, kommt es zuerst zu einer Zusammenfassung der geschichtlichen Entwicklung von Volks- und Kunstmärchen, woraufhin eine textimmanente Analyse der irischen Märchensammlung Crokers sowie der Übersetzungen der Brüder Grimm durchgeführt wird. Im Zuge dessen werden Unterschiede und relevante Gemeinsamkeiten in den Texten aufgezeigt und einer genaueren Betrachtung unterzogen.
Flavour Covariant Formalism for Resonant Leptogenesis
Creators: name: Dev, P. S. Bhupal
name: Millington, Peter
name: Pilaftsis, Apostolos
name: Teresi, Daniele
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a fully flavour-covariant formalism for transport phenomena and apply it to study the flavour-dynamics of Resonant Leptogenesis (RL). We show that this formalism provides a complete and unified description of RL, consistently accounting for three distinct physical phenomena: (i) resonant mixing and (ii) coherent oscillations between different heavy-neutrino flavours, as well as (iii) quantum decoherence effects in the charged-lepton sector. We describe the necessary emergence of higher-rank tensors in flavour space, arising from the unitarity cuts of partial self-energies. Finally, within a Resonant $τ$-Genesis model, we illustrate the importance of this formalism by showing that the final lepton asymmetry can vary by as much as an order of magnitude between partially flavour-dependent treatments, which do not capture all of the pertinent flavour effects.
description: 7 pages, 2 figures; numerical example revised; Contribution to the Proceedings of the ICHEP 2014, Valencia, Spain
Jump conditions for strings and sheets from an action principle
Creators: name: Hanna, J. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: I present conditions for compatibility of velocities, conservation of mass, and balance of momentum and energy across moving discontinuities in inextensible strings and sheets of uniform mass density. The balances are derived from an action with a time-dependent, non-material boundary, and reduce to matching of material boundary conditions if the discontinuity is stationary with respect to the body. I first consider a point discontinuity in a string and a line discontinuity in a sheet, in the context of classical inertial motion in three Euclidean dimensions. I briefly comment on line discontinuities terminating in point discontinuities in a sheet, discontinuous line discontinuities in a sheet, and an approach to dynamic fracture that treats a crack tip in a sheet as a time-dependent boundary point. I provide two examples of general solutions for conservative sheet motions near a line discontinuity. The approach also enables treatment of actions depending on higher derivatives of position; I thus derive balances for an \emph{elastica} which are applicable to moving contact problems.
description: Added figure with picture of dancing tube guy, small clarifications, and term that was missing from an equation