cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 7 of Comparative analyses of DNA repeats and identification of a novel Fesreba centromeric element in fescues and ryegrasses
Creators: name: Zwyrtková, Jana
name: Alžběta Němečková
name: Čížková, Jana
name: Kateřina Holušová
name: Kapustová, Veronika
name: Svačina, Radim
name: Kopecký, David
name: Till, Bradley John
name: Doležel, Jaroslav
name: Hřibová, Eva
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Fig. S4. Original images of Southern hybridization depicted in Fig. 5 and Additional file 2: Fig. S1, respectively. Original images of Southern hybridization with sequences derived from cluster CL1 (A), cluster CL38 (B), and cluster CL20 (C) and with sequences for the reverse transcriptase domain (D) and non-coding LTR region (E) of the Fesreba element. Lanes contained genomic DNA digested by HaeIII restriction endonuclease. Lane 1: diploid F. pratensis cv. Fure; lane 2: tetraploid F. pratensis cv. Westa; lane 3: hexaploid F. arundinacea subsp. arundinacea; lane 4: hexaploid F. gigantea; lane 5: tetraploid F. glaucescens; lane 6: tetraploid F. mairei; lane 7: tetraploid L. multiflorum cv. Mitos; lane 8: diploid L. multiflorum cv. Kuri1; lane 9: tetraploid L. perenne cv. Neptun; lane 10: diploid L. perenne.
Metal-coated carbon nanotube tips for Magnetic Force Microscopy
Creators: name: Deng, Zhifeng
name: Yenilmez, Erhan
name: Leu, Josh
name: Hoffman, J. E.
name: Straver, Eric
name: Dai, Hongjie
name: Moler, Kathryn A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We fabricated cantilevers for magnetic force microscopy with carbon nanotube tips coated with magnetic material. Images of a custom hard drive demonstrated 20 nm lateral resolution, with prospects for further improvements.
description: Accepted to be published in Applied Physics Letters
Additional file 1 of Enhanced sensitivity of VEGF detection using catalase-mediated chemiluminescence immunoassay based on CdTe QD/H2O2 system
Creators: name: Fahimeh Ghavamipour
name: Rahmani, Hossein
name: Shanehsaz, Maryam
name: Khosro Khajeh
name: Mirshahi, Manouchehr
name: Sajedi, Reza H.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Additional file 1. Figure S1 Characterization of CdTe QDs. (a) UV– visible absorption (―) and fluorescence spectra (---), (b) CL kinetic curves, (c) DLS diagrams and (d) TEM images of CdTe QDs quantum dots with maximum emission peak of 570 nm and average size and concentration of 4 nm and 4.0 × 10−6 M, respectively. Figure S2 (a) SDS–PAGE analysis of purified VEGF on a 12.5% gel, stained with Coomassie Brilliant Blue R250. Lane 1: eluted fraction from the Ni-NTA agarose column and lane 2: protein molecular weight marker. (b) Native–PAGE of CAT:VEGF:dextran conjugates formation. The ratios corresponding to each lane are shown at the top of the figure. Figure S3 A dose-response curve of CdTe QD/H2O2 CL-ELISA against different concentrations of VEGF. Quantitative estimation of Kd value was obtained by non-linear curve fitting (one site binding model) of the data using GraphPad Prism.
Search for millicharged particles in proton-proton collisions at $\sqrt{s} = 13$ TeV
Creators: name: Ball, A.
name: Beauregard, G.
name: Brooke, J.
name: Campagnari, C.
name: Carrigan, M.
name: Citron, M.
name: De La Haye, J.
name: De Roeck, A.
name: Elskens, Y.
name: Franco, R. Escobar
name: Ezeldine, M.
name: Francis, B.
name: Gastal, M.
name: Ghimire, M.
name: Goldstein, J.
name: Golf, F.
name: Guiang, J.
name: Haas, A.
name: Heller, R.
name: Hill, C. S.
name: Lavezzo, L.
name: Loos, R.
name: Lowette, S.
name: Magill, G.
name: Manley, B.
name: Marsh, B.
name: Miller, D. W.
name: Odegard, B.
name: Saab, F. R.
name: Sahili, J.
name: Schmitz, R.
name: Setti, F.
name: Shakeshaft, H.
name: Stuart, D.
name: Swiatlowski, M.
name: Yoo, J.
name: Zaraket, H.
name: Zheng, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We report on a search for elementary particles with charges much smaller than the electron charge using a data sample of proton-proton collisions provided by the CERN Large Hadron Collider in 2018, corresponding to an integrated luminosity of 37.5 fb$^{-1}$ at a center-of-mass energy of 13 TeV. A prototype scintillator-based detector is deployed to conduct the first search at a hadron collider sensitive to particles with charges ${\leq}0.1e$. The existence of new particles with masses between 20 and 4700 MeV is excluded at 95% confidence level for charges between $0.006e$ and $0.3e$, depending on their mass. New sensitivity is achieved for masses larger than $700$ MeV.
Smallholder Household Maize Production and Marketing Behavior in Zambia and Its Implications for Policy.
Creators: name: Zulu, Ballard
name: Jayne, Thomas S.
name: Beaver, Margaret
name: Zulu, Ballard
name: Jayne, Thomas S.
name: Beaver, Margaret
Publisher: name: Unknown
Year: 2007
Subjects: subject: Crop Production/Industries
subject: food security
subject: food policy
subject: maize
subject: marketing
subject: production
subject: Zambia
subject: Africa

description: The ability of agricultural policy makers to promote national development objectives requires an accurate and reasonably current picture of what crops farmers grow, what they eat, the importance of various crops in their incomes, and how they spend their money. In Zambia’s case, there is reasonably accurate information on production levels and trends in a specific set of crops grown by smallholder farmers, but very little knowledge of how important these specific crops are in smallholders’ total crop incomes, the importance of crop production in total smallholder incomes (which include livestock and non-farm activities), and how changes in crop prices affect smallholders’ welfare. This paper presents a comprehensive picture of crop production and marketing patterns in Zambia’s small- and medium-scale farm sector, examines how these patterns vary regionally, and examines differences between poor and non-poor strata of the rural farm sector. The data presented comes from the 1999/00 and 2002/03 production years, corresponding to the 2000/01 and 2003/04 marketing years. Because so much policy attention in Zambia is focused on maize, the study provides a particular emphasis on small farmers’ maize production and marketing behavior, and discusses their implications for policy.
Women in physics? : identity and discourse in Taiwan
Creators: name: Tsai, Li-Ling
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation argues that the deeply held hope for gender equity in science can no longer be simply realized as a project to increase women's participation in science. Understanding women's vexed relations with science requires a reconceptualization of the terms women and science, not as given categories to signal how "women" are coping with their disadvantaged positions in "science," but rather as two discourses formed in relation to each other, in institutional practices and in particular social and historical contexts. This dissertation investigates discourses of women and science by focusing on women in physics in Taiwan. This focus extends debates about gender and science by showing that the intervention of a particular discourse—in this case, the discourse of "women in physics"— into an existing discursive field exposed the contested terrain of the gender politics of physics and the identity politics of women physicists in Taiwan. "Women in physics" emerged as an internationally legitimate subject position in Taiwan in 1999 following a call to form a local working team on women in physics. The participants I interviewed utilized this internationally legitimate subject position to reconstruct, in different ways, their gendered identities in physics. Scholarship in the field of gender and science education studies has, over the past three decades, focused on equity and inclusion to address gender inequalities in science. This dissertation suggests, by contrast, that a focus on identity is necessary for understanding gendered career decisions in science. The term identity refers to how individuals perceive themselves and how others respond to their claims; identity involves the purposes, interests and contexts of particular naming processes. In the structural inequalities of gender and science, a focus on identity aims to track individual and collective forms of agency exercised in changing discursive fields. This dissertation concludes by viewing curriculum as a discursive field where various discourses provide subject positions and produce potential meanings through teaching and learning. Hope for social transformation can be situated in the interventionary power of new discourses and the subsequent reconfiguration of gendered identities in existing institutional practices.
title: Радиопередатчики. Часть 2. Изучение резонансного усилителя мощности и стабильности частоты автогенератора (работы № 10 и № 14)
Creators: name: ELS IPR BOOKS
Publisher: name: Московский технический университет связи и информатики
Year: 2016

description: Практикум, включающий работы № 10 и № 14, относится к общему циклу занятий в учебной лаборатории по группам дисциплин «Радиопередающие устройства», «Основы генерирования и формирования радиосигналов», «Устройства генерирования и формирования радиосигналов», выполняемых студентами направлений «Инфокоммуникационные технологии и системы связи» (профили подготовки «Системы мобильной связи», «Цифровое телерадиовещание», «Системы радиосвязи и радиодоступа»), «Радиотехника (профиль подготовки «Радиотехнические средства передачи, приема и обработки сигналов»), а также специальности «Информационная безопасность телекоммуникационных систем».
title: High-resolution absolute range sensors based on the combination of frequency modulation and laser triangulation for heavy industry application
Creators: name: Krauhausen, Michael
name: Priem, Roland
name: Claßen, Ralf
name: Prellinger, Günther
name: Pollinger, Florian
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: Feedback control of metal strip rolling processes requires inline-capable, fast and robust thickness gauges. An optical thickness gauge is developed which measures the distance to the top and bottom of the strip with two optical sensors. They combine triangulation and multi-wavelength interferometry for a robust absolute high-resolution range measurement. Sinusoidal modulation interferometry is used to realize a very compact Fizeau-type multi-wavelength interferometer. The performance of the thickness gauge is studied in the laboratory under dynamic conditions that are close to production environment. The expanded measurement uncertainty of 0.48 μm of the system is thereby consistent with the observed deviation of the measurement values from a tactile reference sensor.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
Nonrelativistic Quantum Analysis of the Charged Particle-Dyon System on a Conical Spacetime
Creators: name: de Oliveira, A. L. Cavalcanti
name: de Mello, E. R. Bezerra
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we develop the nonrelativistic quantum analysis of the charged particle-dyon system in the spacetime produced by an idealized cosmic string. In order to do that, we assume that the dyon is superposed to the cosmic string. Considering this peculiar configuration {\it conical} monopole harmonics are constructed, which are a generalizations of previous monopole harmonics obtained by Wu and Yang(1976 {\it Nucl. Phys. B} {\bf 107} 365) defined on a conical three-geometry. Bound and scattering wave functions are explicitly derived. As to bound states, we present the energy spectrum of the system, and analyze how the presence of the topological defect modifies obtained result. We also analyze this system admitting the presence of an extra isotropic harmonic potential acting on the particle. We show that the presence of this potential produces significant changes in the energy spectrum of the system.
description: Paper accepted for publication in Classical and Quantum Gravity
Assessment of the Farm Level Financial Profitability of the Magoye RipperiIn Maize and Cotton Production in Southern and Eastern Provinces
Creators: name: Kabwe, Stephen
name: Donovan, Cynthia
name: Samazaka, David
name: Kabwe, Stephen
name: Donovan, Cynthia
name: Samazaka, David
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agricultural Finance
subject: Crop Production/Industries
subject: food security
subject: Conservation Farming
subject: Magoye Ripper
subject: Zambia.
subject: Africa

description: With the risk of the drought in the agricultural production areas of Zambia, conservation farming (CF) was introduced as a set of technologies that can improve productivity while reducing plant stress due to moisture constraints. Under animal traction, CF involves using the Magoye ripper to minimize soil disturbance in land preparation and to help improve water conservation, thus enhancing farmers’ land and labor productivity. This technology has been promoted by Golden Valley Agricultural Research Trust (GART) and other stakeholders in the agricultural sector in Zambia and shows promise in on-station and on-farm trials. This research is based on actual farmer use of the ripper in Eastern and Southern Provinces in 2004/2005, a year with erratic rainfall and poor growing conditions in general. Thus, this research reflects how farmers apply the technology in combination with other cropping practices in cotton and maize production, and the outcome of its use under poor rainfall conditions, in comparison to animal traction ploughing. In this study, farmers were not directed, as in an on-farm trial, but used the rippers and other practices in their own way. The results show that the technology has benefits. When asked, the farmers identified various benefits to using the ripper. About 23% of the farmers indicated that ripped lines collected and conserved water such that crops in ripped fields were able to grow even during dry spells. The second most important benefit identified by the farmers was that the technology enables farmers to do early land preparation. Researchers use regression analysis to understand the effect of various practices and factors on yields of maize and cotton.
The role of water in host-guest interaction
Creators: name: Rizzi, Valerio
name: Bonati, Luigi
name: Ansari, Narjes
name: Parrinello, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: One of the main applications of atomistic computer simulations is the calculation of ligand binding energies. The accuracy of these calculations depends on the force field quality and on the thoroughness of configuration sampling. Sampling is an obstacle in modern simulations due to the frequent appearance of kinetic bottlenecks in the free energy landscape. Very often this difficulty is circumvented by enhanced sampling techniques. Typically, these techniques depend on the introduction of appropriate collective variables that are meant to capture the system's degrees of freedom. In ligand binding, water has long been known to play a key role, but its complex behaviour has proven difficult to fully capture. In this paper we combine machine learning with physical intuition to build a non-local and highly efficient water-describing collective variable. We use it to study a set of of host-guest systems from the SAMPL5 challenge. We obtain highly accurate binding energies and good agreement with experiments. The role of water during the binding process is then analysed in some detail.
title: Scaling of a compliant mechanism for high-precision force measurement applications
Creators: name: Wolf, Matthias
name: Wittke, Martin
name: Torres Melgarejo, Mario
name: Theska, René
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: This paper is dedicated to the mechanical structure of a force transducer for the measurement of very small forces in the nanonewton range with highest resolution and lowest measurement uncertainty. To achieve this, a low stiffness in one direction of motion, but high stiffness in all other directions of motion is required. Existing solutions that meet the requirements are not suitable because of their overall dimensions. This results in a need for miniaturization. For this purpose, the scaling behavior of an existing monolithic compliant mechanism is investigated and it is verified which joint contour provides an optimal stiffness ratio. It is shown that the corner-filleted contour in general has lower bending stiffnesses, but also lower cross stiffnesses compared to the semi-circular contour. A nonlinear scaling effect for the ratio of bending stiffness and cross stiffness in corner-filleted contour offers optimization potential. Based on a simplified rigid body model, additionally, the miniaturization of the mechanism is optimized. The stiffness in the desired direction of motion is reduced by about 85% compared to a semi-circular contour. The result is promising for the further development of a miniaturized force transducer. The findings of this work contribute to the advancement of the measurement of low forces and offer new perspectives for future research in miniaturized force sensors.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
title: Digital Education in Europe and the EU’s role in upgrading it
Creators: name: Kask, Maarja
name: Feller, Nils
Publisher: name: Hertie School
Year: 2021

description: A key political priority of Ursula von der Leyen’s Commission is making Europe fit for the digital age. It promised to create playing rules for Artificial Intelligence (AI) within the first 100 days of its mandate. This urgency underlines the importance of digital transformation for the Commission. We have not seen the same sense of urgency regarding digital education, however. In this policy brief, Nils Feller and Maarja Kask explain why stronger EU engagement in digital education and upskilling is crucial not only for the Union’s labour market but its overall competitiveness. They show where the Commission stands, what challenges it faces and how they can be addressed.
title: Учебно-методическое пособие по курсу Физическая культура по теме Практические рекомендации для студентов, временно освобожденных от занятий физкультурой
Creators: name: ELS IPR BOOKS
Publisher: name: Московский технический университет связи и информатики
Year: 2016

description: Учебно-методическое пособие предназначено тем, кто временно освобожден от занятий по физической культуре, но нуждается в зачете по этому предмету.
Additional file 1 of Simple change in logistic procedure improves response rate to QOL assessment: a report from the Japan Children’s Cancer Group
Creators: name: Sato, Iori
name: Soejima, Takafumi
name: Ishida, Yasushi
name: Maeda, Miho
name: Koh, Katsuyoshi
name: Kamibeppu, Kiyoko
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Trends in Agricultural and Rural Development Indicators in Zambia.
Creators: name: Jayne, Thomas S.
name: Govereh, Jones
name: Chilonda, Pius
name: Mason, Nicole M.
name: Chapoto, Antony
name: Haantuba, Hyde H.
name: Jayne, Thomas S.
name: Govereh, Jones
name: Chilonda, Pius
name: Mason, Nicole M.
name: Chapoto, Antony
name: Haantuba, Hyde H.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Community/Rural/Urban Development
subject: International Development
subject: food security
subject: policy
subject: development
subject: indicators
subject: Zambia.
subject: Africa

description: Effective agricultural and food security policies in Africa need to be based on a solid empirical foundation. In Zambia, it is widely perceived that poverty rates are increasing, agricultural growth is stagnant, and real food prices are higher as food production declines. This study examines these trends and finds that all of these perceptions are wrong. Rural poverty rates have declined substantially in rural Zambia since the early 1990s, although they are still unacceptably high. Real staple food prices for consumers have declined by 20% over the past decade, thanks to major reductions in maize milling and retailing margins. And there is evidence of impressive production growth for some crops that are becoming increasingly important sources of income and food security for Zambian farmers, despite evidence of stagnant production for other key crops. This paper examines the relationship between trends in agricultural sector performance and rural poverty in Zambia, the likely factors driving these trends, and the future implications for agricultural policy and investment rate
title: Приборы сверхвысоких частот и оптического диапазона в вопросах и ответах. Часть 2. Полупроводниковые приборы СВЧ
Creators: name: ELS IPR BOOKS
Publisher: name: Московский технический университет связи и информатики
Year: 2012

description: Полупроводниковые приборы занимают особое место в технике СВЧ. Благодаря именно их применению стало возможным развитие современных спутниковых и мобильных систем связи, средств радионавигации и радиолокации, активных фазированных антенных решеток, а также создание сверхбыстродействующих суперкомпьютеров. Столь широкое и эффективное их применение в различных областях науки и техники предопределенно рядом несомненных достоинств полупроводниковых приборов СВЧ, среди которых в первую очередь следует отметить их высокие надежность и эксплуатационные свойства, сверхмалые размеры и возможность их технологической интеграции с целью реализации высоконадежных функционально сложных монолитных интегральных схем (МИС) СВЧ. В настоящее время приемопередающие модули, например, мобильных телефонов реализуются в виде всего лишь одной или двух МИС СВЧ.
title: Tolerancing of centering of a reflective dual field-of-view optical system based on Alvarez-Principle
Creators: name: Zettlitzer, Lucas
name: Gross, Herbert
name: Risse, Stefan
name: Theska, René
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: A new dual state reflective optical relay system based on the Alvarez principle is proposed, which can be used for remote sensing applications. Using the solution found, two different object fields can be imaged using the same optical system. A Three-Mirror-Anastigmat telescope (TMA) is proposed with an intermediate image plane that incorporates a double reflective freeform subsystem as a relay system. By mechanically moving two freeform mirror substrates, this subsystem allows for a discrete change in the total focal length. A deep understanding of the effects of geometric deviations on the system is a crucial prerequisite for ensuring mechanical feasibility and stable optical imaging performance. For this reason, this article focuses on the method and results of tolerancing the subsystem.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
title: Приборы сверхвысоких частот и оптического диапазона в вопросах и ответах. Часть 3. Квантовые приборы
Creators: name: ELS IPR BOOKS
Publisher: name: Московский технический университет связи и информатики
Year: 2013

description: Настоящее пособие «Часть 3. Квантовые приборы» является логическим завершением учебно-методического обеспечения дисциплины «Приборы сверхвысоких частот и оптического диапазона (ПСВЧ и ОД). Как и ранее изданные пособия «Часть 1. Электровакуумные приборы СВЧ» и «Часть 2. Полупроводниковые приборы СВЧ», данное пособие содержит тестовые задания в виде контрольных вопросов с альтернативными вариантами по физическим основам квантовой электроники, включая разделы курса ПСВЧ и ОД. С целью облегчения изучения курса ПСВЧ и ОД, особенно для студентов заочной и дистанционной форм обучения, в пособии приведены необходимые пояснения – ответы на предлагаемые контрольные вопросы, что способствует улучшению качества самостоятельной работы студентов не только упомянутых форм обучения, но и студентов-очников, у которых также могут встречаться трудности при самостоятельной работе. Пособие предназначено для студентов вузов связи, обучающихся по профилю «Многоканальные телекоммуникационные системы». Данное пособие может оказаться полезным и для преподавателей.
Observational Constraints on a Variable Dark Energy Model
Creators: name: Movahed, M. Sadegh
name: Rahvar, Sohrab
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the effect of a phenomenological parameterized quintessence model on low, intermediate and high redshift observations. At low and intermediate redshifts, we use the Gold sample of supernova Type Ia (SNIa) data and recently observed size of baryonic acoustic peak from Sloan Digital Sky Survey (SDSS), to put constraint on the parameters of the quintessence model. At the high redshift, the same fitting procedure is done using WAMP data, comparing the location of acoustic peak with that obtain from the dark energy model. As a complementary analysis in a flat universe, we combine the results from the SNIa, CMB and SDSS. The best fit values for the model parameters are $Ω_m = 0.27^{+0.02}_{-0.02}$ (the present matter content) and $w_0=-1.45^{+0.35}_{-0.60}$ (dark energy equation of state). Finally we calculate the age of universe in this model and compare it with the age of old stars and high redshift objects
description: 10 pages, 12 figures, accepted in PRD
Additional file 6 of Comparative analyses of DNA repeats and identification of a novel Fesreba centromeric element in fescues and ryegrasses
Creators: name: Zwyrtková, Jana
name: Alžběta Němečková
name: Čížková, Jana
name: Kateřina Holušová
name: Kapustová, Veronika
name: Svačina, Radim
name: Kopecký, David
name: Till, Bradley John
name: Doležel, Jaroslav
name: Hřibová, Eva
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Table S3. Primers used for PCR amplification of DNA repeats.
Orbital Stability of Exomoons and Submoons with Applications to Kepler 1625b-I
Creators: name: Rosario-Franco, Marialis
name: Quarles, Billy
name: Musielak, Zdzislaw
name: Cuntz, Manfred
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: An intriguing question in the context of dynamics arises: Could a moon possess a moon itself? Such a configuration does not exist in the Solar System, although this may be possible in theory. Kollmeier et al. (2019) determined the critical size of a satellite necessary to host a long-lived sub-satellite, or submoon. However, the orbital constraints for these submoons to exist are still undetermined. Domingos et al. (2006) indicated that moons are stable out to a fraction of the host planet Hill radius $R_{H,p}$, which in turn depends on the eccentricity of its host's orbit. Motivated by this, we simulate a system of exomoons and submoons for $10^5$ planetary orbits, while considering many initial orbital phases to obtain the critical semimajor axis in terms of $R_{H,p}$ or the hosts satellite's Hill radius $R_{H,sat}$, respectively. We find that, assuming circular coplanar orbits, the stability limit for exomoons is 0.40 $R_{H,p}$ and for a submoon is 0.33 $R_{H,sat}$. Additionally, we discuss the observational feasibility of detecting these sub-satellites through photometric, radial velocity, or direct imaging observations using the Neptunes-sized exomoon candidates Kepler 1625b-I (Teachey et al. 2018) and identify how stability can shape the identification of future candidates.
description: Accepted to AJ. 15 pages, 5 figures, 2 tables
Vibrating Cavities - A numerical approach
Creators: name: Ruser, Marcus
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a general formalism allowing for efficient numerical calculation of the production of massless scalar particles from vacuum in a one-dimensional dynamical cavity, i.e. the dynamical Casimir effect. By introducing a particular parametrization for the time evolution of the field modes inside the cavity we derive a coupled system of first-order linear differential equations. The solutions to this system determine the number of created particles and can be found by means of numerical methods for arbitrary motions of the walls of the cavity. To demonstrate the method which accounts for the intermode coupling we investigate the creation of massless scalar particles in a one-dimensional vibrating cavity by means of three particular cavity motions. We compare the numerical results with analytical predictions as well as a different numerical approach.
description: 28 pages, 19 figures, accepted for publication in J. Opt. B: Quantum Semiclass. Opt
title: Beyond transparency: Getting serious about greening Europe’s financial system
Creators: name: Mack, Sebastian
Publisher: name: Hertie School
Year: 2021

description: The financial sector must divest from unsustainable business. This is imperative to achieve a climate-neutral economy and to safeguard financial stability. The European sustainable finance regulatory agenda of 2018 launched important initiatives that increase transparency on climate risks. Now it is time to move to the second stage and incorporate climate risks in the risk models and capital requirements of banks, pensions funds and insurance firms. This will reduce their exposure to potential losses from climate risks and at the same time render sustainable investment alternatives more attractive.
Security of Widows’ Access to Land in the Era of HIV/AIDS: Panel Survey Evidence from Zambia (revised version)
Creators: name: Chapoto, Antony
name: Jayne, Thomas S.
name: Mason, Nicole M.
name: Chapoto, Antony
name: Jayne, Thomas S.
name: Mason, Nicole M.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Health Economics and Policy
subject: Land Economics/Use
subject: food security
subject: policy
subject: HIV/AIDS
subject: land
subject: Zambia.
subject: Africa

description: The view that widows and their dependents face greater livelihood risks in the era of HIV/AIDS is indeed supported by nationally-representative survey results from Zambia. Efforts to safeguard widows’ rights to land through land tenure innovations involving community authorities may be an important component of social protection, poverty alleviation, and HIV/AIDS mitigation strategies. Several of the findings reported show the influence of local traditional authorities in affecting the extent to which widows are able to retain land. Increased government commitment to ensure security of widows’ access to land is another approach, but initial evaluations of government efforts provide mixed evidence (see Izumi, 2006). Government decrees appear to have little impact if local community authorities are not part of the agreement. But certainly, national governments, donors, and NGOS have an important role to play in developing programs to work with local authorities to protect widows and children against property grabbing by relatives of the deceased as well as to institute property rights that are more compatible with social protection and anti-poverty objectives in the era of AIDS.
title: Development of a tool-changing system for nanofabrication machines
Creators: name: Weigert, Florian
name: Wolf, Matthias
name: Theska, René
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: The frequent use of a growing diversity of tools in nanofabrication machines raises the need for a highly reproducible tool-changing system that is capable of working with tools of different weights and moments of inertia. Since the tool-changing system is designed beneficially based on an open, force-paired kinematic coupling, means to apply a holding force are required. The holding force needed is about 40 N in total and has to be applied without heat dissipation or other disturbances. Since variations in the elastic deformation at the contact points of the coupling directly influence the reproducibility of the tool position, the force application needs to be highly reproducible. An analytical model is developed to determine the force application requirements, taking into consideration elastic deformation and friction. Based on this model, the allowable variation of the holding force in amount and direction, as well as the allowable deviation of the force application point, are determined. Thereby, the resulting influence of the force application on the reproducibility of the position of the tool-center point is intended to be 5 nm or less. Eleven solution principles for force application are developed based on the physical effects of magnetic force, spring force, and weight force. Based on a systematic evaluation, an arrangement of three permanent magnets with flux guide pieces at an angle of 120° to each other has been chosen at the fixed side. On the tool side, ferromagnetic plates are used to close the magnetic circuit. Thereby, the air gap and, thus, the holding force can be adjusted individually for each tool. During the tool change, the magnetic force is switched off by short-circuiting the magnetic flux with an additional rotatory-mounted flux piece, which is driven by a gear motor. The designed prototype will be tested and further optimized within a nanofabrication machine.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
title: Потоки в динамических сетях
Creators: name: ELS IPR BOOKS
Publisher: name: Московский технический университет связи и информатики
Year: 2010

description: Рассмотрены варианты построения, развития и реализации ячеистых сетей, представлена их классификация по размеру и способу соединения ячеек. Исследуются важнейшие характеристики потоков в сетях – средняя длина пути и нагрузка дуг, узлов. При регулярном приращении ячеек общие суммы длин путей, нагрузки дуг, узлов образуют арифметические ряды второго, третьего и выше порядка, параметры которых позволяют рассчитать (прогнозировать) потоки в развивающихся сетях. Предназначено для студентов, аспирантов и специалистов, занимающихся изучением, исследованием сетевых структур широкого назначения и различной технической реализации.
title: Synthesis of optimized compliant mechanisms for ultra-precision applications
Creators: name: Torres Melgarejo, Mario
name: Henning, Stefan
name: Zentner, Lena
name: Theska, René
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: Compliant mechanisms for ultra-precision applications are often required to achieve highest accuracy over largest possible ranges of motion along multiple axes. The typical synthesis approach for such high demands is based on the substitution of the revolute joints of a suitable rigid-body model with optimized flexure hinges. However, during the transition from rigid-body model to compliant mechanism, the effects of multiple input parameters are still widely unknown. Among them are the degrees of freedom of the rigid-body model, the integration of the drive elements, as well as the coupling of mechanisms to achieve multiple motion axes. The following contribution expands the fundamentals of the synthesis of compliant mechanisms based on rigid-body models for their application in ultra-precision technologies. Based on the investigation of the aforementioned parameters as well as the knowledge gained from previous research work, a novel synthesis method has been developed.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
Discovery of a Large Scale Clumpy Structure around the Lynx Supercluster at z~1.27
Creators: name: Nakata, Fumiaki
name: Kodama, Tadayuki
name: Shimasaku, Kazuhiro
name: Doi, Mamoru
name: Furusawa, Hisanori
name: Hamabe, Masaru
name: Kimura, Masahiko
name: Komiyama, Yutaka
name: Miyazaki, Satoshi
name: Okamura, Sadanori
name: Ouchi, Masami
name: Sekiguchi, Maki
name: Ueda, Yoshihiro
name: Yagi, Masafumi
name: Yasuda, Naoki
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a probable large scale structure composed of many galaxy clumps around the known twin clusters at z=1.26 and z=1.27 in the Lynx region. Our analysis is based on deep, panoramic, and multi-colour imaging (26.4'x24.1') in VRi'z'-bands with the Suprime-Cam on the 8.2m Subaru telescope. This unique, deep and wide-field imaging data-set allows us for the first time to map out the galaxy distribution in the highest redshift supercluster known. We apply a photometric redshift technique to extract plausible cluster members at z~1.27 down to i'=26.15 (5sigma) corresponding to M*+2.5 at this redshift. From the 2-D distribution of these photometrically selected galaxies, we newly identify seven candidates of galaxy groups or clusters where the surface density of red galaxies is significantly high (>5sigma), in addition to the two known clusters. These candidates show clear red colour-magnitude sequences consistent with a passive evolution model, which suggests the existence of additional high density regions around the Lynx superclusters.
description: 6 pages, 5 figures, accepted for publication in MNRAS
title: Учебно-методическое пособие и задание на курсовой проект по дисциплине Проектирование и эксплуатация систем передачи
Creators: name: ELS IPR BOOKS
Publisher: name: Московский технический университет связи и информатики
Year: 2015

description: Приведены методические указания по самостоятельному изучению дисциплины Проектирование и эксплуатация систем передачи в девятом семестре, задание на курсовой проект и методические указания по его выполнению. Предназначены для студентов заочного факультета, обучающихся по направлению подготовки бакалавров Инфокоммуникационные технологии и системы связи, профиль Многоканальные телекоммуникационные системы.
title: Everything will be different: How the pandemic is changing EU economic governance
Creators: name: Guttenberg, Lucas
name: Hemker, Johannes
name: Tordoir, Sander
Publisher: name: Hertie School
Year: 2021

description: The pandemic will completely shake up the EU‘s economic governance in five ways: EU debt is possible and will become a reality; the EU and the Eurozone get a fiscal capacity; the European Semester will be history; the crisis managament architecture is politically questioned; and the Eurozone loses its relevance for EU decision-making. Taken together, these five lessons from the pandemic will render the old pre-pandemic Eurozone reform agenda obsolete. EU institutions should use the coming 18 months to prepare a new reform agenda for EU economic governance that can deliver tangible results before the next EU long-term budget will be negotiated.
A Current Mode Detector Array for Gamma-Ray Asymmetry Measurements
Creators: name: Gericke, M. T.
name: Blessinger, C.
name: Bowman, J. D.
name: Gillis, R. C.
name: Hartfield, J.
name: Ino, T.
name: Leuschner, M.
name: Masuda, Y.
name: Mitchell, G. S.
name: Muto, S.
name: Nann, H.
name: Page, S. A.
name: Penttilä, S. I.
name: Ramsay, W. D.
name: Seo, P. -N.
name: Snow, W. M.
name: Tasson, J.
name: Wilburn, W. S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have built a CsI(Tl) gamma-ray detector array for the NPDGamma experiment to search for a small parity-violating directional asymmetry in the angular distribution of 2.2 MeV gamma-rays from the capture of polarized cold neutrons by protons with a sensitivity of several ppb. The weak pion-nucleon coupling constant can be determined from this asymmetry. The small size of the asymmetry requires a high cold neutron flux, control of systematic errors at the ppb level, and the use of current mode gamma-ray detection with vacuum photo diodes and low-noise solid-state preamplifiers. The average detector photoelectron yield was determined to be 1300 photoelectrons per MeV. The RMS width seen in the measurement is therefore dominated by the fluctuations in the number of gamma rays absorbed in the detector (counting statistics) rather than the intrinsic detector noise. The detectors were tested for noise performance, sensitivity to magnetic fields, pedestal stability and cosmic background. False asymmetries due to gain changes and electronic pickup in the detector system were measured to be consistent with zero to an accuracy of $10^{-9}$ in a few hours. We report on the design, operating criteria, and the results of measurements performed to test the detector array.
description: 33 pages, 20 figures, 2 tables
title: Радиопередающие устройства систем связи с подвижными объектами
Creators: name: ELS IPR BOOKS
Publisher: name: Московский технический университет связи и информатики
Year: 2014

description: Рассмотрены принципы построения и функционирования радиопередающих устройств, используемых в системах связи с подвижными объектами (ССПО). Приводятся структурные схемы трактов передачи РЧ блоков современных ССПО. Рассмотрены принципы построения трактов синтеза частот РЧ блоков, разновидности используемых в них синтезаторов частот. Учебное пособие ориентировано на студентов, обучающихся по специальностям «Радиосвязь, радиовещание и телевидение», «Средства связи с подвижными объектами».
Measurements of $WH$ and $ZH$ production in the $H \rightarrow b\bar{b}$ decay channel in $pp$ collisions at 13 TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measurements of the Standard Model Higgs boson decaying into a $b\bar{b}$ pair and produced in association with a $W$ or $Z$ boson decaying into leptons, using proton-proton collision data collected between 2015 and 2018 by the ATLAS detector, are presented. The measurements use collisions produced by the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s} = $13 TeV, corresponding to an integrated luminosity of 139 fb$^{-1}$. The production of a Higgs boson in association with a $W$ or $Z$ boson is established with observed (expected) significances of 4.0 (4.1) and 5.3 (5.1) standard deviations, respectively. Cross-sections of associated production of a Higgs boson decaying into bottom quark pairs with an electroweak gauge boson, $W$ or $Z$, decaying into leptons are measured as a function of the gauge boson transverse momentum in kinematic fiducial volumes. The cross-section measurements are all consistent with the Standard Model expectations, and the total uncertainties vary from 30% in the high gauge boson transverse momentum regions to 85% in the low regions. Limits are subsequently set on the parameters of an effective Lagrangian sensitive to modifications of the $WH$ and $ZH$ processes as well as the Higgs boson decay into $b\bar{b}$.
description: 61 pages in total, author list starting page 45, 10 figures, 15 tables, published in EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-51/. The results including the correlation matrix are available at https://doi.org/10.17182/hepdata.94800
Carbon and Oxygen Galactic Gradients: Observational Values from HII Region Recombination Lines
Creators: name: Esteban, C.
name: Garcia-Rojas, J.
name: Peimbert, M.
name: Peimbert, A.
name: Ruiz, M. T.
name: Rodriguez, M.
name: Carigi, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of deep echelle spectrophotometry of eight Galactic HII regions located at Galactocentric distances between 6.3 and 10.4 kpc. The data have been taken with the Very Large Telescope (VLT) Ultraviolet Echelle Spectrograph (UVES) in the 3100 to 10360 A range. We have derived C++ and O++ abundances from recombination lines for all the objects, as well as O+ abundances from this kind of lines for three of the nebulae. The intensity of recombination lines is almost independent of the assumed electron temperature as well as of the possible presence of spatial temperature variations or fluctuations inside the nebulae. These data allow the determination of the gas-phase C and O abundance gradients of the Galactic disk, of paramount importance for chemical evolution models. This is the first time the C gradient is derived from such a large number of HII regions and for such a wide range of Galactocentric distances. Abundance gradients are found of the form $Δ$log(O/H) = -0.044$\pm$0.010 dex kpc^-1, $Δ$log(C/H) = -0.103$\pm$0.018 dex kpc^-1, and $Δ$log(C/O) = -0.058$\pm$0.018 dex kpc^-1.
description: 13 pages, 2 tables, 2 figures. Published in ApJ Letters, 618, L95
title: Cement-bound mineral casted parts in precision engineering
Creators: name: Hahm, Christoph
name: Erbe, Torsten
name: Theska, Rene
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: The design of a machine frame, supporting a plurality of components/modules, is a major challenge during the development of precision systems. The geometric stability of the supporting parts under thermal and mechanical loads has a decisive influence on the achievable accuracy. Common materials like cast iron or natural stone have preferable properties but often come with high costs and long lead times due to sourcing or manufacturing process and required geometric precision. Concrete is an interesting alternative. Polymer concrete and cement-based concrete such as self-compacting concrete have been considered as cost-effective alternatives for quite a while now. This paper summarizes recent research and findings on these alternative materials and reviews their applicability in machine frame design. Aspects of the cold primary shaping process will be covered with an emphasis on ready-to-use features with geometric tolerances in the order of magnitude of micrometers. The potential for integrating functional elements is discussed. The advantages of concrete as an alternative material are summarized with regard to the application of the design principle "functional material at the location where functionality is required".
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023