cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nuclear charm and bottom production: a comparison among high energy approaches
Creators: name: Goncalves, V. P.
name: Machado, M. V. T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the nucleon and nuclear photoproduction cross sections for heavy quarks within the $k_{\perp}$-factorization formalism, considering the current high energy approaches which include nuclear and saturation effects. Our results demonstrate that a future experimental analysis of this process would allow to constraint the QCD dynamics at high energies.
description: 10 pages, 2 figures. Version to be published in Eur. Phys. J. C
title: Insights Into The Biological Role Of Ovothiol In Sea Urchins And Diatoms
Creators: name: Milito, Alfonsina
Publisher: name: The Open University
Year: 2019

description: Ovothiols are π-methyl-5-thiohistidines, first isolated and characterised from ovary, eggs and biological fluids of marine invertebrates. They are produced in large amounts by sea urchin eggs as a protection from the oxidative burst at fertilisation and from environmental cues during embryonic development.

The position of the thiol group on the imidazole ring confers to these molecules unique chemical properties allowing them to play numerous biological roles in nature, as well as they are receiving an increasing interest as pharmacological compounds for a potential therapeutic use in humans.

The key enzymes responsible for ovothiol biosynthesis, OvoA and OvoB, have been characterised revealing that its biosynthesis is much more widespread than previously thought.

 In this thesis, the physiological roles of ovothiol have been investigated in two marine organisms inhabiting coastal areas, sea urchins and diatoms, with the aim to highlight new biological functions and possible applications for human health.

Through molecular and functional analyses of OvoA transcript and protein carried out during development of the Mediterranean sea urchin Paracentrotus lividus, this study has revealed that ovothiol biosynthesis is fundamental for the progression of a correct developmental program. In particular, the role of this metabolite is likely related to fundamental processes like cell cycle during early development, skeletogenesis and gut functionality in larval stages.

 On the other hand, molecular experiments performed in the centric diatom Skeletonema marinoi have revealed that OvoA transcription is modulated by light and is associated with reactive oxygen and nitrogen species variations, thus suggesting that ovothiol can be involved in the antioxidant response triggered by light in diatoms. These studies are relevant considering the possibility to use diatoms to produce high amounts of the compound necessary for applied research.
title: Научно-исследовательская деятельность. Теория и практика системного проектирования углеродных композитов функционального назначения
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: В учебном пособии раскрыты пути определения нестандартных решений при постановке и поиске научных и технологических задач применительно к современной теории и практики создания композиционных материалов (КМ) специального назначения, включая дизайн их пространственной структуры и технологий изготовления. Представлены результаты создания современных КМ на основе разработанных автором специальных методов системной инженерии, как инструментов планирования эмпирических исследований и получения современных научных знаний. Продемонстрирована высокая эффективность метода информационного моделирования в предметных областях разработки компонентов современных электрохимических источников тока, а также элементов теплозащиты. Рассмотрены закономерности функционирования отрасли углерод-полимерных и углерод-углеродных КМ применительно к отмеченным выше предметным областям. Особое внимание уделено практике построения научных исследований по созданию таких КМ. На конкретных практических примерах учащиеся овладевают навыками составления математических информационных моделей химико-технологических процессов в области химии и технологии переработки полимеров и композитов. Предназначено для студентов специальности 18.06.01 – Химическая технология (для аспирантов) института прикладной химии и экологии.
title: Научно-практический семинар
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2017

description: Приведены сведения для расширения научно-технического кругозора магистрантов, представлена методология научно-исследовательской деятельности, рассмотрены вопросы, связанные с формированием навыков по подготовке и проведению научно-исследовательской работы, написанию статей и тезисов докладов для опубликования в материалах конференций, симпозиумов, сборниках и журналах. Учебное пособие предназначено для студентов всех форм обучения, обучающихся по дисциплине «Научно-практический семинар», направления подготовки магистров 18.04.02 «Энерго- и ресурсосберегающие процессы в химической технологии, нефтехимии и биотехнологии» и 20.04.01 «Техносферная безопасность».
Demand and Supply Projections for Major Agricultural Commodities in Punjab
Creators: name: Johl, S. S.
name: Kaul, J. L.
name: Johl, S. S.
name: Kaul, J. L.
Publisher: name: Unknown
Year: 1972
Subjects: Agribusiness
Agricultural and Food Policy
Demand and Price Analysis

description: Seminar on Demand and Supply Projections for Agricultural Commodities
Using the ROSAT Catalogues to find counterparts for the second IBIS/ISGRI Survey Sources
Creators: name: Stephen, J. B.
name: Bassani, L.
name: Malizia, A.
name: Bazzano, A.
name: Ubertini, P.
name: Bird, A. J.
name: Dean, A. J.
name: Lebrun, F.
name: Walter, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The second IBIS/ISGRI survey has produced a catalogue containing 209 hard X-ray sources visible down to a flux limit of around 1 milliCrab. The point source location accuracy of typically 1-3 arcminutes has allowed the counterparts for most of these sources to be found at other wavelengths. In order to help identify the remaining objects, we have used the cross-correlation recently found between the ISGRI catalogue and the ROSAT All Sky Survey Bright Source Catalogue. In this way, for ISGRI sources which have a counterpart in soft X-rays, we can use the much smaller ROSAT error box to search for identifications. For this second survey, we find 114 associations with the number expected by chance to be ~2. Of these sources, 8 are in the list of unidentified objects and, using the smaller ROSAT error boxes, we can find tentative counterparts for five of them. We have performed the same analysis for the ROSAT Faint Source Catalogue, finding a further nine associations with ISGRI unidentified sources from a total of 29 correlations, and, notwithstanding the poorer location accuracy of these sources and higher chance coincidence possibility, we have managed to find a counterpart for another source. Finally, we have used the ROSAT HRI catalogue to search the ISGRI error boxes and find 5 more X-ray objects, of which two are neither in the bright or faint source catalogues, and for which we have managed to find optical/near infrared associations. This makes a total of 19 objects with X-ray counterparts for which we have found possible identifications for nine, most of which are extragalactic.
description: 6 pages, 4 figures and 2 tables. To be published in Astronomy & Astrophysics
Nothing But The Blood
Creators: name: Barnes, Roscoe
Publisher: name: figshare
Year: 2020
Subjects: subject: Religious Studies
subject: 220402 Comparative Religious Studies
subject: FOS: Philosophy, ethics and religion
subject: 220499 Religion and Religious Studies not elsewhere classified

description: This evangelistic/salvation message initially appeared as a short article in Grace & Truth Magazine (November 2011). It is now published as a Gospel tract by Grace & Truth Inc.
Elementary Excitations of Ferromagnetic Metal Nanoparticles
Creators: name: Cehovin, A.
name: Canali, C. M.
name: MacDonald, A. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a theory of the elementary spin excitations in transition metal ferromagnet nanoparticles which achieves a unified and consistent quantum description of both collective and quasiparticle physics. The theory starts by recognizing the essential role played by spin-orbit interactions in determining the energies of ferromagnetic resonances in the collective excitation spectrum and the strength of their coupling to low-energy particle-hole excitations. We argue that a crossover between Landau-damped ferromagnetic resonance and pure-state collective magnetic excitations occurs as the number of atoms in typical transition metal ferromagnet nanoparticles drops below approximately $10^4$, approximately where the single-particle level spacing, $δ$, becomes larger than, $\sqrtα E_{\rm res}$, where $E_{\rm res}$ is the ferromagnetic resonance frequency and $α$ is the Gilbert damping parameter. We illustrate our ideas by studying the properties of semi-realistic model Hamiltonians, which we solve numerically for nanoparticles containing several hundred atoms. For small nanoparticles, we find one isolated ferromagnetic resonance collective mode below the lowest particle-hole excitation energy, at $E_{\rm res} \approx 0.1$ meV. The spectral weight of this pure excitation nearly exhausts the transverse dynamical susceptibility spectral weight. As $δ$ approaches $\sqrtα E_{\rm res}$, the ferromagnetic collective excitation is more likely to couple strongly with discrete particle-hole excitations. In this regime the distinction between the two types of excitations blurs. We discuss the significance of this picture for the interpretation of recent single-electron tunneling experiments.
description: 19 pages, 13 figures
Extreme points of the set of quantum states with bounded energy
Creators: name: Weis, Stephan
name: Shirokov, Maksim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 47Axx, 52Axx, 81Qxx

description: We show that for any energy observable every extreme point of the set of quantum states with bounded energy is a pure state. This allows us to write every state with bounded energy in terms of a continuous convex combination of pure states of bounded energy. Furthermore, we prove that any quantum state with finite energy can be represented as a continuous convex combination of pure states with the same energy. We discuss examples from quantum information theory.
description: Preliminary version. Any comments and references are welcome
title: Немецкий язык. Дизайн костюма, текстиля, обуви и аксессуаров
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: Учебное пособие состоит из двух частей, каждая из которых содержит как адаптированные тексты с лексическими упражнениями для дисциплины «Иностранный язык», так и неадаптированные тексты по профилю будущей специальности для дисциплины «Иностранный язык в профессиональной сфере». Такое построение позволяет сохранить преемственность в материале и выстроить систему заданий от более простых к более сложным, включающим в себя реферирование и аннотирование текстов по специальности. После каждого из разделов предлагаются контрольные задания, позволяющие проверить качество усвоения студентами материала, знание ими лексики специальности и умения обобщения информации нескольких текстов. Пособие предназначено для аудиторных занятий и самостоятельной работы по дисциплинам «Иностранный язык» (IV семестр) и «Иностранный язык в профессиональной сфере» для студентов-бакалавров направлений подготовки: 54.03.01, 50.03.03, 54.03.04, 29.03.01, 29.04.05, 44.03.01.
A model exploration of NIR ro-vibrational CO emission as a tracer of inner cavities in protoplanetary disks
Creators: name: Antonellini, S.
name: Banzatti, A.
name: Kamp, I.
name: Thi, W. -F.
name: Woitke, P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Near-IR observations of protoplanetary disks provide information about the properties of the inner disk. High resolution spectra of abundant molecules such as CO can be used to determine the disk structure in the warm inner parts. The $v2/v1$ ro-vibrational ratio of $v_{1-0}$ and $v_{2-1}$ transitions has been recently observed to follow distinct trends with the CO emitting radius, in a sample of TTauri and Herbig disks; these trends have been empirically interpreted as due to inner disk depletion from gas and dust. In this work we use existing thermo-chemical disk models to explore the interpretation of these observed trends in ro-vibrational CO emission. We use the radiation thermo-chemical code ProDiMo, exploring a set of previously published models with different disk properties and varying one parameter at a time: the inner radius, the dust-to-gas mass ratio, the gas mass. In addition, we use models where we change the surface density power law index, and employ a larger set of CO ro-vibrational levels, including also fluorescence from the first electronic state. We investigate these models for both TTauri and Herbig star disks. Finally, we include a set of DIANA models for individual TTauri and Herbig disks which were constructed to reproduce a large set of multi-wavelength observations.
High Resolution Millimeter Imaging of the Proto-Planetary Nebula He 3-1475
Creators: name: Huggins, P. J.
name: Muthu, C.
name: Bachiller, R.
name: Forveille, T.
name: Cox, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report high resolution (1-2 arcsec) imaging of the CO 2-1 line and the millimeter continuum in the proto-planetary nebula He 3-1475. The observations reveal the presence of a massive (~0.6 M_sun} envelope of molecular gas around the origin of the remarkable bipolar jet system seen in optical images with the HST. The CO kinematics are well modeled by an expanding, bi-conical envelope: the prominent, high-velocity (~50 km/s) wings seen in single-dish CO spectra arise where the sides of the bi-cones are projected along the line of sight. The continuum is detected at 1.3 mm and 2.6 mm and is due to thermal emission from warm (~80 K) circumstellar dust. The structure, kinematics, and expansion time of the envelope provide strong evidence for entrainment of the molecular gas by the high velocity jets. The observations support an evolutionary scenario in which a period of enhanced mass loss by the central star is followed by the development of the bipolar jets which burst through the molecular envelope. The jet-envelope interactions play a crucial role in shaping the subsequent ionized nebula.
description: Astronomy & Astrophysics in press
7519: Charles Robert Willox and David Milne Campbell from Durris, Scotland
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Charles Robert Willox was cousin to my grandfather Sidney McLennan. He was born on 02/08/1897 at Maryculter, Kincardineshire, Scotland, the son of George Willox and Christina Willox née McLennan. They lived at Denside, Durris, Kincardineshire, Scotland. He was killed in action on 05/09/1916 in France. He is commemorated at Thiepval Memorial, Somme, France on Panel 15C, along with other Gordon Highlanders.At a chance meeting at the Family History Society somebody told me that his neighbour had found a "dead man's penny"� in his garden. This was the name given to a bronze plaque, almost five inches across, which was given to the next-of-kin of every serviceman killed in the 1914-18 War. I asked about the name on it. "Willox" was the reply. "Not Charles?" I asked. A phone-call in the evening confirmed my hopes. Yes, Charles Willox was indeed the name which appeared on it.Charles had a sister, Mary, who married James Campbell on 29/01/1918 in Aberdeen. He was a company sergeant major in the Gordon Highlanders. James also lost a brother in the First World War. He was David Milne Campbell. He was born on 04/01/1891, the son of James Campbell and Isabella Campbell, née Kay. They lived at Brachmont, Durris. He was killed in action on 09/05/1915 in Belgium. He is commemorated at Ypres (Menin Gate) Memorial, West-Vlaanderen, Belgium on Panel 10.Both Charles Robert Willox and David Milne Campbell are commemorated on the Durris War Memorial.
Scaling accountability through vertically integrated civil society policy monitoring and advocacy
Creators: name: Fox, Jonathan
Publisher: name: American University
Year: 2023

description: This working paper argues that the growing field of transparency, participation and accountability (TPA) needs a conceptual reboot, to address the limited traction gained so far on the path to accountability. To inform more strategic approaches and to identify the drivers of more sustainable institutional change, fresh analytical work is needed. This paper makes the case for one among several possible strategic approaches by distinguishing between “scaling up” and “taking scale into account”. This proposition grounds an explanation of the vertical integration strategy, which involves multi-level coordination by civil society organisations of policy monitoring and advocacy, grounded in broad pro-accountability constituencies. To spell out how this strategy can empower proaccountability actors, the paper contrasts varied terms of engagement between state and society, proposing a focus on collaborative coalitions as an alternative to the conventional dichotomy between confrontation and constructive engagement. The paper grounds this discussion by reviewing the rich empirical terrain of existing multi-level approaches, summarizing nine cases – three each in three countries – to demonstrate what can be revealed when TPA initiatives are seen through the lens of scale. It concludes with a set of broad analytical questions for discussion, followed by testable hypotheses proposed to inform future research agendas.
Effect of Berry Phase on Nonlinear Response of Two-dimensional Fermions
Creators: name: Raichev, O. E.
name: Zudov, M. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop a theory of nonlinear response to an electric field of two-dimensional (2D) fermions with topologically non-trivial wave functions characterized by the Berry phase $Φ_n = n π, n = 1,2,...$. In particular, we find that owing to suppression of backscattering at odd $n$, Hall field-induced resistance oscillations, which stem from elastic electron transitions between Hall field-tilted Landau levels, are qualitatively distinct from those at even $n$: their amplitude decays with the electric field and their extrema are phase-shifted by a quarter cycle. The theory unifies the cases of graphene ($n = 1$) and graphite bilayer ($n = 2$) with the case of conventional 2D electron gas ($n = 0$) and suggests a new method to probe backscattering in topological 2D systems.
description: 5 pages, 1 figure
EFICIÊNCIA E CUSTOS ASSOCIADOS À ADEQUAÇÃO AMBIENTAL PARA A PRODUÇÃO LÁCTEA EM MINAS GERAIS
Efficiency and Costs Associated to Environmental Adequacy for Milk Production in Minas Gerais, Brazil
Creators: name: Coelho Campos, Samuel Alex
name: Coelho, Alexandre Bragança
name: Gomes, Adriano Provezano
name: De Mattos, Leonardo Bornacki
name: Coelho Campos, Samuel Alex
name: Coelho, Alexandre Bragança
name: Gomes, Adriano Provezano
name: De Mattos, Leonardo Bornacki
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Farm Management
subject: Livestock Production/Industries
subject: Environmental efficiency
subject: DEA
subject: dairy production
subject: Minas Gerais
subject: Eficiência ambiental
subject: produção láctea

description: A produção láctea apresenta elevado potencial de degradação ambiental, via nitratos, presente nos dejetos das vacas. Objetivou-se,neste estudo, analisar o desempenho econômico e ambiental dos produtores de leite em Minas Gerais, em 2005, incorporando a poluição por nitrogênio nos critérios de eficiência, bem como as especificidades tecnológicas entre os produtores. Essas foram consideradas na análise e no cálculo dos custos econômicos associados à redução do impacto ambiental, sendo utilizadas como metodologias a análise fatorial, a análise de agrupamentos e a análise envoltória de dados. Os resultados indicaram: (i) o baixo desempenho ambiental da produção láctea; (ii) a existência de custos econômicos associados à redução das emissões; (iii) menor desempenho econômico dos produtores intensivos no longo prazo; e (iv) menor desempenho ambiental para os produtores extensivos no longo prazo. Dessa forma, políticas governamentais para a redução do impacto ambiental deveriam se concentrar nos produtores extensivos, enquanto políticas para melhoria do desempenho econômico deveriam ser focadas nos produtores intensivos. ----- Milk production presents an elevated potential for environmental degradation due to the nitrates presents in cow waste. Thus, this study aimed at analyzing the economic and environmental performance of dairy producers in Minas Gerais, Brazil, in 2005, incorporating nitrogen pollution in the efficiency criteria, as well as the technological specificities between producers. These were considered in the analysis and calculation of the economic costs associated to the reduction in the environmental impact, using the factorial analysis, cluster analysis and data envelopment analysis as methodologies. The results indicated: (i) low environmental performance in milk production; (ii) existence of economic costs associated to reducing emissions; (iii) lower economic performance of intensive producers in the long-term; and (iv) lower environmental performance of extensive producers in the long-term. Thus, government policies to reduce the environmental impact should focus on the extensive producers, while policies to improve economic performance should focus on intensive producers.
Soliton trains in Bose-Fermi mixtures
Creators: name: Karpiuk, T.
name: Brewczyk, M.
name: Ospelkaus-Schwarzer, S.
name: Bongs, K.
name: Gajda, M.
name: Rzazewski, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We theoretically consider the formation of bright solitons in a mixture of Bose and Fermi degenerate gases. While we assume the forces between atoms in a pure Bose component to be effectively repulsive, their character can be changed from repulsive to attractive in the presence of fermions provided the Bose and Fermi gases attract each other strongly enough. In such a regime the Bose component becomes a gas of effectively attractive atoms. Hence, generating bright solitons in the bosonic gas is possible. Indeed, after a sudden increase of the strength of attraction between bosons and fermions (realized by using a Feshbach resonance technique or by firm radial squeezing of both samples) soliton trains appear in the Bose-Fermi mixture.
description: 4 pages, 4 figures
Optische Verformungsmessung an heterogenen Werkstoffsystemen
Creators: name: Skotarek, Christoph
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: 620
subject: Deformationsmessung
subject: Optische Messung
subject: Werkstoffkunde
subject: Mechanische Eigenschaft

description: Zugleich: Dissertation, Universität Kassel, 2019
Improvement of high voltage direct current material properties upon tailoring the morphology of crosslinked polyethylenes
Creators: name: Niedik, Christoph Felix
name: Jenau, Frank
name: Maricanov, Michail
name: Segiet, Dominik
name: Tiller, Jörg Christian
name: Katzenberg, Frank
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: HVDC
subject: Morphology tailoring
subject: Polymer insulation
subject: Space charge phenomena
subject: 660

description: Crosslinked linear low-density polyethylene (XLPE) is the most common polymeric cable insulation material for high-voltage applications with a high number of operating hours in high voltage alternating current (HVAC) systems. High voltage direct current (HVDC) power transmission and polymeric cable systems play a major role in the future and raise, besides numerous systemic benefits, challenges in the design of material properties. The main issue is injection and trapping of space charges in insulation materials under DC-fields. The objective of this work is to increase knowledge of the interplay between microstructure and material performance of XLPE under DC by tailoring its morphology beyond the capabilities of “common crystallization kinetics” upon constrained crystallization at certain elongations. It was found that the tailored oriented morphology influences the energetic depth of traps and a significant reduction of space charge density occurs. Moreover, the optimized oriented morphology leads to a significant reduction of field enhancement for field strengths ELaplace ≥ 20 kV mm−1 compared to unoriented XLPEs with spherulitic morphology. It is shown that this way of morphology tailoring results in a considerable, material dependent reduction of field exposure by a factor of 4, which promises a significant improvement in the electrical life time of polymeric insulation material used.
description: Polymer crystallization;4(6)
Scaling accountability through vertically integrated civil society policy monitoring and advocacy
Creators: name: Fox, Jonathan
Publisher: name: The Institute of Development Studies
Year: 2023
Subjects: classificationCode: 4407
subject: Policy and administration

description: This working paper argues that the growing field of transparency, participation and accountability (TPA) needs a conceptual reboot, to address the limited traction gained so far on the path to accountability. To inform more strategic approaches and to identify the drivers of more sustainable institutional change, fresh analytical work is needed. This paper makes the case for one among several possible strategic approaches by distinguishing between “scaling up” and “taking scale into account”. This proposition grounds an explanation of the vertical integration strategy, which involves multi-level coordination by civil society organisations of policy monitoring and advocacy, grounded in broad pro-accountability constituencies. To spell out how this strategy can empower proaccountability actors, the paper contrasts varied terms of engagement between state and society, proposing a focus on collaborative coalitions as an alternative to the conventional dichotomy between confrontation and constructive engagement. The paper grounds this discussion by reviewing the rich empirical terrain of existing multi-level approaches, summarizing nine cases – three each in three countries – to demonstrate what can be revealed when TPA initiatives are seen through the lens of scale. It concludes with a set of broad analytical questions for discussion, followed by testable hypotheses proposed to inform future research agendas.
On Modifications of the Sp(2) Covariant Superfield Quantization
Creators: name: Gitman, D. M.
name: Moshin, P. Yu.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a modification of the Sp(2) covariant superfield quantization to realize a superalgebra of generating operators isomorphic to the massless limit of the corresponding superalgebra of the osp(1,2) covariant formalism. The modified scheme ensures the compatibility of the superalgebra of generating operators with extended BRST symmetry without imposing restrictions eliminating superfield components from the quantum action. The formalism coincides with the Sp(2) covariant superfield scheme and with the massless limit of the osp(1,2) covariant quantization in particular cases of gauge-fixing and solutions of the quantum master equations.
description: 11 pages, to be published in Phys. Lett. B
title: Немецкий язык: материалы обучения по модульной системе, включая тексты по домашнему чтению и подготовку к текущему и промежуточному контролю
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2018

description: Учебное пособие построено в соответствии с Программой третьего поколения и представляет собой материалы для чтения, монологической и диалогической речи, распределённые по шести модулям и девятнадцати разговорным темам. Большинству тем предшествует основная лексика с переводом, которую следует запомнить. Разнообразие форм послетекстовых заданий должно способствовать повышению интереса студентов к изучению языка и развитию творческого мышления. Следует обращать внимание на размер шрифта: дополнительный материал напечатан мельче. К каждой теме сделано Приложение (Anhang), в котором даны тексты для домашнего чтения. Тексты дифференцированы по трудности и маркированы для учащихся среднего уровня - ■■, для студентов с низкой языковой компетенцией - ■, с высокой - ■■■. Пособие предназначено для студентов I курса (I, II семестры) всех направлений подготовки.
VALUE CREATION AND VALUE APPROPRIATION IN NETWORKS: AN EMPIRICAL ANALYSIS OF THE ROLE OF GEOGRAPHICAL INDICATION IN THE WINE INDUSTRY IN VALE DOS VINHEDOS, RS, BRAZIL
Criação e Apropriação de Valor em Redes: Uma Análise Empírica Sobre o Papel da Indicação Geográfica na Indústria Vinícola do Vale dos Vinhedos, RS
Creators: name: Schmidt, Carla Maria
name: Saes, Maria Sylvia Macchione
name: Fowler De Ávila Monteiro, Guilherme
name: Schmidt, Carla Maria
name: Saes, Maria Sylvia Macchione
name: Fowler De Ávila Monteiro, Guilherme
Publisher: name: Unknown
Year: 2014
Subjects: subject: Crop Production/Industries
subject: Institutional and Behavioral Economics
subject: Geographical indication
subject: collective system
subject: grape growers
subject: wineries
subject: Indicação geográfica
subject: sistemas coletivos
subject: produtores de uva
subject: vinícolas

description: This article investigates the impacts associated with the introduction of a Geographical Indication registry in a network which operates within the wine agroindustrial system in the South of Brazil. The network is formed by wineries, grape growers, hotels, restaurants and artisans. Within this complex system, several collective actions take place, highlighting the introduction of a Geographical Indication (GI) registry for fine wines. Although the GI was supposed to affect the many actors of the collective system, its actual impact is unknown. Thus, this study aimed at identifying: (i) whether the GI enables the creation of value for the different agents which operate within the agroindustrial system, and (ii) how the appropriation of value generated by the GI occurs. Based on interviews and questionnaires conducted with wineries and grape growers, the authors performed panel estimations. The main results point to a scenario of value creation in the investigated network. Regarding the value appropriation, the estimations suggest that the wineries are capable of appropriating greater created value within the network. ----- Investiga-se, neste artigo, os impactos associados à introdução de um registro de Indicação Geográfica em uma rede que opera dentro do sistema agroindustrial do vinho, na região Sul do Brasil. A rede é formada por vinícolas, produtores de uva, hotéis, restaurantes e artesãos. Dentro desse sistema complexo ocorrem várias ações coletivas, destacando-se a obtenção de um registro de Indicação Geográfica dos vinhos finos. Embora suponha-se que tal registro afete os diversos atores do sistema coletivo, seu impacto real é desconhecido. Assim, este estudo tem como objetivo identificar (i) se a Indicação Geográfica permite a criação de valor para os diferentes agentes que atuam no sistema agroindustrial e (ii) como ocorre a apropriação do valor gerado pela Indicação Geográfica. Baseando-se em entrevistas e questionários realizados com produtores e vinícolas, os autores realizam estimações em painel. Os principais resultados apontam um cenário de criação de valor na rede investigada. Em relação à apropriação de valor, as estimativas sugerem que as vinícolas são capazes de se apropriarem mais do valor criado dentro da rede.
title: Mechanisms of Nanoparticle Toxicity in Cancer and Normal Cells
Creators: name: Tzelepi, Konstantina Nadia
Publisher: name: The Open University
Year: 2019

description: Nanotechnology offers vital tools for cancer diagnosis, early detection and novel treatments. Gold nanoparticles (AuNPs) are at the forefront of biological and biomedical research and show an increased promise in targeted cancer therapy due to their unique physicochemical properties. They offer the advantage of biomolecular interaction both at the cell surface level and inside the cell. In this thesis, 2nm AuNPs surface functionalised with a 50:50 ratio of a thiolated α-Galactose derivative and a thiol-PEGamine were examined for their toxicity and uptake in normal and cancer cell lines in vitro. Using this simple ligand structure, a selective cancer toxicity was observed, which was highly dependent upon the nanoparticles’ synthesis duration. This observation was correlated to ligand density, which decreased with shorter synthesis time, making particles less toxic. Detailed insight into the mechanism of toxicity and uptake was gained by energy-dependent experiments and cell death assays, revealing a significant adhesion of these particles to filopodia. The proposed mechanism of cell death in HSC oral squamous carcinoma cells exposed to AuNPs was identified to be the extrinsic apoptotic pathway, as toxicity was abrogated by inhibition of either caspase 3/7 or caspase 8, but not by inhibition of caspase 9. Future directions include batch standardisation of the optimum nanoparticle synthesis conditions and elucidation of the mechanisms of cell uptake and toxicity in a variety of cancer and normal cell lines.
title: Новейшие достижения аддитивных технологий
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: В пособии рассмотрены методы современных аддитивных технологий, материалы для 3D-печати, основные разработки аддитивных технологий в российской промышленности и Федеральная целевая программа «Исследования и разработки 2014 – 2020» по развитию отечественных аддитивных технологий. Представлены тезисы докладов круглого стола «Индустрия 4.0. Аддитивные технологии» XX Менделеевского съезда по общей и прикладной химии. Предназначено для студентов всех форм обучения, проходящих подготовку по направлениям 18.03.01 и 18.04.01 «Химическая технология», 18.03.02 «Энерго- и ресурсосберегающие процессы в химической технологии, нефтехимии и биотехнологии», 15.03.02 «Технологические машины и оборудование», 15.03.04 «Автоматизация технологических процессов и производств», 27.03.04 «Управление в технических системах», 54.03.01 «Дизайн».
Observer dependence for the phonon content of the sound field living on the effective curved space-time background of a Bose-Einstein condensate
Creators: name: Fedichev, Petr O.
name: Fischer, Uwe R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate that the ambiguity of the particle content for quantum fields in a generally curved space-time can be experimentally investigated in an ultracold gas of atoms forming a Bose-Einstein condensate. We explicitly evaluate the response of a suitable condensed matter detector, an ``Atomic Quantum Dot,'' which can be tuned to measure time intervals associated to different effective acoustic space-times. It is found that the detector response related to laboratory, ``adiabatic,'' and de Sitter time intervals is finite in time and nonstationary, vanishing, and thermal, respectively.
description: 9 pages, 2 figures; references updated, as published in Physical Review D
title: Learning and Applying Financial Metrics to Evaluate Human Capital Investments: The case of Return on Investment
Creators: name: Dadd, Deneise Anson Donna
Publisher: name: The Open University
Year: 2016

description: Return on Investment (ROI) is one of several financial metrics increasingly advocated and used to evaluate expenditures on human capital initiatives. This thesis explored empirically the discrepancy between growing interest in, and uptake of, ROI for human capital investments on the one hand; and evidence to date that implementation is problematic and actual usage limited, on the other. From within a constructivist/interpretivist paradigm, ten attempts to apply ROI were identified and reconstructed using the qualitative techniques of observations, interviews and document analyses. These attempts were drawn from three different contexts - corporate, health service and international development. Concepts from seminal theories on learning and skills acquisition, knowledge, practice, context and their relationship with each other, as well as the introduction of new technical approaches, were selected to provide a framework to guide the enquiries and interpretation of data. The study found the term ROI was used as a bridging metric and understood in three ways - metaphorically, as an aspiration of value; literally, as a metric; and procedurally, as a method for planning and evaluating human capital investments. The metaphorical use of ROI was widespread as a way of expressing a common goal when dealing with key stakeholders. However, the metric was rarely utilised to measure human capital investments because applying it was difficult and time consuming; particularly linking the investment and service system performance through people performance. Methodically, ROI seemed to function as an aspirational map for planning and evaluating human capital investments. Learning and applying the method, even partially, was valued and tended to lead to changed behaviour and organisational culture. Significant variations between the three contexts were noted, and it is argued that the contingencies affecting the uptake and appropriateness of ROI in different settings would likely affect the appropriateness of other financial metrics for evaluating human capital investments.
title: Новейшие технологии пластических масс и композиционных материалов. Научные основы создания углеродных композиционных материалов
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2018

description: В учебном пособии рассматриваются вопросы современной теории и практики создания композиционных материалов (КМ) специального назначения, включая дизайн их пространственной структуры и технологий изготовления. Особое внимание уделено практике построения научных исследований по созданию таких КМ. Учебное пособие содержит обширный экспериментальный материал по разработке лабораторных и промышленных технологий изготовления углеродных электропроводящих КМ и изделий на их основе. Предназначено для студентов специальности 18.04.01 «Химическая технология» (для магистров) института прикладной химии и экологии.
title: Оборудование для получения и переработки полимерных материалов
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: Учебное пособие рассматривает вопросы производства полимерных материалов и изделий на их основе. Представлено современное технологическое оборудование для переработки полимерных материалов. Особое внимание уделено поэтапному рассмотрению производства полимерных материалов с указанием необходимых и задаваемых характеристик как исходных компонентов, так и конечных продуктов. Рассмотрены технологические линии и агрегаты с указанием их технологических параметров. Учебное пособие предназначено для студентов направления 18.03.01 «Химическая технология» (для бакалавров) института прикладной химии и экологии.
The Essential Spectrum of the Discrete Laplacian on Klaus-sparse Graphs
Creators: name: Golenia, Sylvain
name: Truc, Françoise
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In 1983, Klaus studied a class of potentials with bumps and computed the essential spectrum of the associated Schr{ö}dinger operator with the help of some localisations at infinity. A key hypothesis is that the distance between two consecutive bumps tends to infinity at infinity. In this article, we introduce a new class of graphs (with patterns) that mimics this situation, in the sense that the distance between two patterns tends to infinity at infinity. These patterns tend, in some way, to asymptotic graphs. They are the localisations at infinity. Our result is that the essential spectrum of the Laplacian acting on our graph is given by the union of the spectra of the Laplacian acting on the asymptotic graphs. We also discuss the question of the stability of the essential spectrum in the appendix.
Probing Unquenching Effects in the Gluon Polarisation in Light Mesons
Creators: name: Fischer, C. S.
name: Watson, P.
name: Cassing, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We introduce an extension to the ladder truncated Bethe-Salpeter equation for mesons and the rainbow truncated quark Dyson-Schwinger equations which includes quark-loop corrections to the gluon propagator. This truncation scheme obeys the axialvector Ward-Takahashi identity relating the quark self-energy and the Bethe-Salpeter kernel. Two different approximations to the Yang-Mills sector are used as input: the first is a sophisticated truncation of the full Yang-Mills Dyson-Schwinger equations, the second is a phenomenologically motivated form. We find that the spectra and decay constants of pseudoscalar and vector mesons are overall described well for either approach. Meson mass results for charge eigenstate vector and pseudoscalar meson masses are compared to lattice data. The effects of unquenching the system are small but not negligible.
description: 26 pages, 13 figures
title: A micro-demographic analysis of human fertility from Chinese genealogies, 1368-1911
Creators: name: Hu, Sijie
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2020

description: This thesis is a micro-demographic analysis of human fertility from Chinese genealogies in the Ming (1368-1644) and Qing (1644-1911) dynasties. It exploits a new genealogical dataset comprising 72,861 individuals from six lineages to account for the fertility decisions taken in Chinese families. Following the comprehensive micro-level analyses of a small population, the thesis demonstrates the main features at an individual level of the fertility patterns and the relationships between demographic outcomes and social outcomes in imperial China. This thesis consists of three substantive chapters. The first constructs the marital fertility levels and provides the ongoing debate with quantitative evidence on whether the Chinese consciously practised fertility controls in the pre-modern era. The second substantive chapter shows the social gradients in fertility and examines the mechanisms through which social status affected fertility. The third expands the reproductive success story of a single generation into a multi-generational one, focusing on the process of transmitting fertility choices across generations and the effects of family size on the quality of the children. The three chapters together exhibit the micro-demographic dynamics in Chinese families from the fourteenth to the twentieth centuries. The thesis shows that Ming-Qing China had a moderate fertility level, with no deliberate fertility controls. Throughout the entire period, climbing up the social ladder could significantly increase men’s net reproduction through increasing their marriage chances and the number of marriages they could have. Moreover, elites in traditional China also managed to transmit reproductive success to their offspring, mainly by passing on their high social outcomes. Family size could also affect the quality of the offspring, but the effect was not powerful enough to bring about any change in parents’ fertility choices.
Heteroepitaxial integration of ZnGeN2 on GaN buffers using molecular beam epitaxy
Creators: name: Tellekamp, M. Brooks
name: Melamed, Celeste L.
name: Norman, Andrew G.
name: Tamboli, Adele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Recently theorized hybrid II-IV-N{_2} / III-N heterostructures, based on current commercialized (In,Ga)N devices, are predicted to significantly advance the design space of highly efficient optoelectronics in the visible spectrum, yet there are few epitaxial studies of II-IV-N{_2} materials. In this work, we present heteroepitaxial ZnGeN{_2} grown on GaN buffers and AlN templates. We demonstrate that a GaN nucleating surface is crucial for increasing the ZnGeN{_2} crystallization rate to combat Zn desorption, extending the stoichiometric growth window from 215 {\degree}C on AlN to 500 {\degree}C on GaN buffers. Structural characterization reveals well crystallized films with threading dislocations extending from the GaN buffer. These films have a critical thickness for relaxation of 20 nm - 25 nm as determined by reflection high energy electron diffraction (RHEED) and cross-sectional scanning electron microscopy (SEM). The films exhibit a cation-disordered wurtzite structure, with lattice constants a = 3.216 Å {\pm} 0.004 Å and c = 5.215 Å {\pm} 0.005 Å determined by RHEED and X-ray diffraction (XRD). This work demonstrates a significant step towards the development of hybrid ZnGeN{_2}-GaN integrated devices.
description: 20 pages, 7 figures