cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A giant elliptical galaxy with a lightweight initial mass function
Creators: name: Smith, Russell J.
name: Lucey, John R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new VLT observations of the closest-known strong-lensing galaxy, the sigma=330 km/s giant elliptical ESO325-G004. The low redshift of the lens (z_lens=0.035) results in arcs being formed at a small fraction of the effective radius, (R_Ein ~ R_Eff/4). At such small radii, stars dominate the lensing mass, so that lensing provides a direct probe of the stellar mass-to-light ratio, with only small corrections needed for dark matter. The redshift of the galaxy lensed by ESO325-G004 was unknown until now, so the lensing mass was not securely determined. Using X-SHOOTER, we measure a secure source redshift of z_src=2.141. Combined with the lensing configuration, this yields a total mass inside the Einstein radius of (1.50+/-0.06) 10^11 M_sun. We estimate the range of possible contribution of dark matter to the lensing mass, using statistics from cosmological N-body simulations. Subtracting this component yields a stellar M/L ratio for the lens of 3.14^+0.24_-0.42 (M/L)_sun (in F814W band). Using VIMOS, we have also obtained very high-S/N spectroscopy for the lens galaxy. The VIMOS data confirm that ESO325-G004 has a very old stellar population. For a Kroupa IMF, the stellar population fit yields a predicted stellar M/L ratio of 3.01+/-0.25 (M/L)_sun. Hence the mass attributable to stars with this IMF is consistent with the lensing estimate. By contrast, a Salpeter or heavier IMF is disfavoured at the 99.8% confidence level. A "heavyweight" IMF, with a mass twice as large as the Kroupa case, is firmly excluded. Such an IMF has been proposed for more distant elliptical lenses, and also to explain strong dwarf-star spectral features, in particular the NaI 8200-Ang doublet. A FORS2 far-red spectrum shows that this feature is as strong in ESO325-G004 as it is in other high-sigma ellipticals, suggesting tension between dwarf-star indicators and lensing-mass constraints for this galaxy.
description: Accepted for publication in MNRAS
Towards a Digital Workflow Solution for Cradle-To-Gate Sustainability Information in Textile Value Chains
Creators: name: Stellmach, Dieter
name: Weiß, Michael
name: Seibold, Jürgen
name: Tilebein, Meike
Publisher: name: Hannover : publish-Ing.
Year: 2022
Subjects: subject: Cradle-to-Gate
subject: Sustainability
subject: Textile Industry
subject: SME
subject: Blockchain
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Sustainability aspects and their verification are becoming indispensable for companies in the textile industry from both an economic and a legal perspective. The reason for this is that there is a large number of different certificates, specifications, and labels, such as Global Organic Textile Standard, Fairtrade, or OekoTex, as well as legislation, such as the German Act on Corporate Due Diligence Obligations in Supply Chains issued in 2021. Hence, the requirements for keeping the proof, e.g. for the batch-accurate world-wide tracing of organic cotton for clothing, or for the necessary transparency to determine the carbon footprint or the recycling percentage, are becoming more and more associated with considerable effort, especially for small and medium-sized enterprises (SMEs). Depending on the certificate or specification, SMEs need not only to determine their own sustainability information (gate-to-gate), but also that of the upstream stages of the value chain (cradle-to-gate). The multi-stage value chains of the SME-dominated textile industry, together with the vast and fast-changing variety of materials and products, lead to high complexity in processes and communication. In addition, when confronted with batch-related sustainability criteria and a variety of sustainability and labelling requests from different customers, SMEs have to spend an increasing amount of time and effort on the reliable provision and communication of the respective information. The paper describes the challenges and existing approaches, e.g. the use of blockchain technology, associated with the provision of cradle-to-gate sustainability information in textile SMEs and proposes a holistic framework enabling SMEs along the value chain to configure and implement an infrastructure for efficient, fully digital cloud-ready workflow, based on process models and textile product master trees, in order to address these challenges.
Viola mirabilis L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. mirabilis L. Cat. 38und422. Bis 1880 m. l: Grammont (nach Becker); Evionnaz (Marietan); Litroz und Tete-Noire bei Finhaut (Miller); Alesse (Garns). - 2: Ob Jeur-Brülee bei Branson bis 1880m (Garns). - 3: Saxon (J.); Bramois (J.); südlich Zinal, 1800 m (Romieux); Neubrück-Stalden (Beauverd). - 3a: Gondo (Becherer).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Broadband plasma spray anti-reflection coating technology for millimeter-wave astrophysics
Creators: name: Jeong, Oliver
name: Plambeck, Richard
name: Raum, Christopher
name: Suzuki, Aritoki
name: Lee, Adrian T.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a broadband plasma spray anti-reflection (AR) coating technology for millimeter-wave astrophysics experiments with large-format, cryogenic optics. By plasma spraying alumina- and silica-based powders, we have produced coatings of tunable index of refraction and thickness, low loss, and coefficient of thermal expansion matched to alumina substrates. We demonstrate two-layer AR coatings on alumina with reflection below 5% over 82% and 69% fractional bandwidths for 90/150 and 220/280 GHz passband designs, respectively, and band-averaged absorption loss reduced to ~1% at 100 K for both AR coatings. We describe the design, tolerance, fabrication process, and optical measurements of these AR coatings.
Determination of ionization and tunneling times in high-order harmonic generation
Creators: name: Zhao, Jing
name: Lein, Manfred
Publisher: name: College Park, MD : American Physical Society
Year: 2013
Subjects: subject: Classical dynamics
subject: Harmonic emissions
subject: High order harmonic generation
subject: Laser-driven electrons
subject: Numerical solution
subject: Retrieval methods
subject: Second-harmonic fields
subject: Substantial errors
subject: Ionization
subject: Harmonic generation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: From the numerical solution of the time-dependent Schrödinger equation, we obtain the times of ionization and return of the laser-driven electron in high-order harmonic generation by probing the dynamics with a second harmonic field polarized orthogonal to the fundamental field and observing the harmonic emission in dependence on the two-color delay. Our retrieval method using complex-time evolution gives ionization and return times in excellent agreement with the quantum-orbit model, while a retrieval based on real-time classical dynamics can introduce substantial errors. Because of the imaginary parts, the harmonic signal polarized along the probe field is nonzero for any two-color delay. The tunneling time can be retrieved under an assumption for the return time. © 2013 American Physical Society.
Neutral and ionized gas around the post-Red Supergiant IRC+10420 at au size scales
Creators: name: Oudmaijer, Rene
name: de Wit, Willem-Jan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: IRC +10420 is one of the few known massive stars in rapid transition from the Red Supergiant phase to the Wolf-Rayet or Luminous Blue Variable phase. The star has an ionised wind and using the Br gamma hydrogen recombination emission we assess the mass-loss on spatial scales of order 1 au. We present new VLT Interferometer AMBER data which are combined with all other AMBER data in the literature. The final dataset covers a position angle range of 180 degrees and baselines up to 110 meters. The spectrally dispersed visibilities, differential phases and line flux are conjointly analyzed and modelled. We also present AMBER/FINITO observations which cover a larger wavelength range and allow us to observe the Na I doublet at 2.2 micron. The data are complemented by X-Shooter data, which provide a higher spectral resolution view. The Brackett gamma line and the Na I doublet are both spatially resolved. After correcting the AMBER data for the fact that the lines are not spectrally resolved, we find that Br gamma traces a ring with a diameter of 4.18 milli-arcseconds. We consider a geometric model in which the Br gamma emission emerges from the top and bottom rings of an hour-glass shaped structure, viewed almost pole-on. It provides satisfactory fits to most visibilities and differential phases. The fact that we detect line emission from a neutral metal like Na I within the ionized region, a very unusual occurrence, suggests the presence of a dense pseudo-photosphere. The ionized wind can be reproduced with a polar wind, which could well have the shape of an hour-glass. The resolved Na I emission is found to occur on scales barely larger than the continuum. This fact and that many Yellow Hypergiants exhibit this comparatively rare emission hints at the presence of a "Yellow" or even "White Wall" in the Hertzsprung-Russell diagram, preventing them from visibly evolving to the blue.
description: Accepted for publication in A&A. 12 pages, 11 figures
Ballistic tracks in graphene nanoribbons
Creators: name: Aprojanz, Johannes
name: Power, Stephen R.
name: Bampoulis, Pantelis
name: Roche, Stephan
name: Jauho, Antti-Pekka
name: Zandvliet, Harold J.W.
name: Zakharov, Alexei A.
name: Tegenkamp, Christoph
Publisher: name: London : Nature Publishing Group
Year: 2018
Subjects: subject: silicon carbide (SiC)
subject: graphene nanoribbons
subject: two-point probe (2PP)
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: High quality graphene nanoribbons epitaxially grown on the sidewalls of silicon carbide (SiC) mesa structures stand as key building blocks for graphene-based nanoelectronics. Such ribbons display 1D single-channel ballistic transport at room temperature with exceptionally long mean free paths. Here, using spatially-resolved two-point probe (2PP) measurements, we selectively access and directly image a range of individual transport modes in sidewall ribbons. The signature of the independently contacted channels is a sequence of quantised conductance plateaus for different probe positions. These result from an interplay between edge magnetism and asymmetric terminations at opposite ribbon edges due to the underlying SiC structure morphology. Our findings demonstrate a precise control of transport through multiple, independent, ballistic tracks in graphene-based devices, opening intriguing pathways for quantum information device concepts.
Search for Supermassive Black Hole Binaries in the Sloan Digital Sky Survey Spectroscopic Sample
Creators: name: Ju, Wenhua
name: Greene, Jenny E.
name: Rafikov, Roman R.
name: Bickerton, Steven J.
name: Badenes, Carles
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Supermassive black hole (SMBH) binaries are expected in a Lambda CDM cosmology given that most (if not all) massive galaxies contain a massive black hole at their center. So far, however, direct evidence for such binaries has been elusive. We use cross-correlation to search for temporal velocity shifts in the MgII broad emission lines of 0.36 < z < 2 quasars with multiple observations in the Sloan Digital Sky Survey. For ~ 10^9 Msun BHs in SMBH binaries, we are sensitive to velocity drifts for binary separations of ~ 0.1 pc with orbital periods of ~100 years. We find seven candidate sub-pc--scale binaries with velocity shifts > 3.4 sigma ~ 280 km/s, where sigma is our systematic error. Comparing the detectability of SMBH binaries with the number of candidates (N < 7), we can rule out that most 10^9 Msun BHs exist in ~ 0.03-0.2 pc scale binaries, in a scenario where binaries stall at sub-pc scales for a Hubble time. We further constrain that < one-third of quasars host SMBH binaries after considering gas-assisted sub-pc evolution of SMBH binaries, although this result is very sensitive to the assumed size of the broad line region. We estimate the detectability of SMBH binaries with ongoing or next-generation surveys (e.g., BOSS, Subaru Prime Focus Spectrograph), taking into account the evolution of the sub-parsec binary in circumbinary gas disks. These future observations will provide longer time baselines for searches similar to ours and may in turn constrain the evolutionary scenarios of SMBH binaries.
description: Resubmitted to ApJ after referee's comments. 21 pages, 9 figures
Procedure Model for Dimensioning and Investment Cost Calculation in an Early Factory Planning Phase
Creators: name: Rieke, Leonard
name: Cevirgen, Cihan
name: Gloy, Alexander
name: Nyhuis, Peter
Publisher: name: Hannover : publish-Ing.
Year: 2022
Subjects: subject: Investment cost calculation
subject: Procedure Model
subject: factory dimensioning
subject: economic assessment
subject: planning tool
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Companies and their factories face constant change in today's world. Cost-intensive factory planning projects are being carried out in shorter intervals due to the increasing dynamism of the production environment. The related investments have a substantial impact on the liquidity of companies. Shorter production life cycles and changing consumer behaviour also require an adapted and more sustainable factory planning and cost estimation. However, especially in an early planning phase, available data and information are often uncertain and inaccurate. This effects in particular the outcome of the central dimensioning variables (operating resources, employees and area) for the planned factories. Incorrect dimensioning of these variables and thus of the associated costs can lead to substantial misinvestments. A holistic approach to obtain a reliable cost estimation of the factory project at an early stage is not yet available. This article therefore presents the development of a comprehensive procedure model for dimensioning and investment cost calculation in an early factory planning phase. For this purpose, relevant information and planning tasks with regard to dimensioning and cost estimation have to be identified first. Determined output values of the subsequent resource dimensioning represent the input values for the cost calculation. With the identification of surcharge factors, cost rates and calculation methods, the dimensioning variables, in particular the production area as the basis for the planned factory, can be estimated in terms of costs at an early stage.
Spontaneous atomic ordering and magnetism in epitaxially stabilized double perovskites
Creators: name: Ohtomo, Akira
name: Chakraverty, Suvankar
name: Mashiko, Hisanori
name: Oshima, Takayoshi
name: Kawasaki, Masashi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the atomic ordering of B-site transition metals and magnetic properties in the pulsed-laser deposited films of La2CrFeO6 (LCFO) and La2VMnO6 (LVMO), whose bulk materials are known to be single perovskites with random distribution of the B-site cations. Despite similar ionic characters of constituent transition metals in each compound, the maximum B-site order attained was surprisingly high, ~90% for LCFO and ~80% for LVMO, suggesting a significant role of epitaxial stabilization in the spontaneous ordering process. Magnetization and valence state characterizations revealed that the magnetic ground state of both compounds was coincidently ferrimagnetic with saturation magnetization of ~2myuB per formula unit, unlike those predicted theoretically. In addition, they were found to be insulating with optical band gaps of 1.6 eV and 0.9 eV for LCFO and LVMO, respectively. Our results present a wide opportunity to explore novel magnetic properties of binary transition-metal perovskites upon epitaxial stabilization of the ordered phase.
description: 19 pages, 1 table, 8 figures
title: Минимизация пороговой и мажоритарной функций
Creators: name: ., М.Ю. Алиев – начальник отдела, АО «Тайфун» (г. Калуга) E-mail: arls@mail.ru А.М. Донецков – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: dam1358@mail.ru А.С. Николаев – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: nikolanta@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. По мере развития техники повышаются требования к кратности ошибок, исправляемых устройствами защиты от ошибок, что усложняет реализацию кодирующего и декодирующего устройств. Одним из способов декодирования является мажоритарный метод декодирования. Основную сложность при построении схемы декодера составляет создание порогового или мажоритарного элемента, особенно когда он имеет много входов, поэтому минимизация пороговой функции (и ее частного случая – мажоритарной функции) имеет важное значение.
Цель. Предложить метод минимизации пороговой и мажоритарной функций, основанный на построении дизъюнктивной нормальной формы.
Результаты. Разработан однозначный алгоритм минимизации, позволяющий получить одинаковые результаты, не зависящие от человека, выполняющего минимизацию. Предложен набор несложных выражений, описывающих процесс получения мажоритарной функции в виде набора несложных формул, что по сравнению с единым выражением, описывающим рассчитываемую функцию, как это делается во всех других алгоритмах минимизации, позволяет уменьшить число механических ошибок, возникающих в процессе минимизации, позволяя легче их обнаружить и исправить. Относительная простота и формализация процесса минимизации позволяет распространить предложенный алгоритм на минимизацию пороговых и мажоритарных функций с бóльшим числом входов, чем доступно для других существующих алгоритмов. Описание алгоритма сопровождается выполнением примера его выполнения для конкретных значений числа входов мажоритарного элемента. Однозначность алгоритма минимизации позволила создать выражение для подсчета числа операций, выполняемых при вычислении функции. Это позволяет оценить сложность создаваемого устройства до создания самого устройства.
Практическая значимость. Проведено сравнение предложенного алгоритма с лучшими алгоритмами из уже существующих, которое показало, что предложенный алгоритм во всех случаях по результату не уступал другим алгоритмам минимизации. При сравнительно малом числе входов мажоритарного элемента число выполняемых операций в предложенном методе не превышает числа операций, выполняемых при использовании других методов. При большом числе входов мажоритарного элемента предложенный метод всегда дает наилучший результат среди известных алгоритмов минимизации.
Collapse and Fragmentation of Magnetic Molecular Cloud Cores with the Enzo AMR MHD Code. I. Uniform Density Sphere
Creators: name: Boss, Alan P.
name: Keiser, Sandra A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Magnetic fields are important contributers to the dynamics of collapsing molecular cloud cores, and can have a major effect on whether collapse results in a single protostar or fragmentation into a binary or multiple protostar system. New models are presented of the collapse of magnetic cloud cores using the adaptive mesh refinement (AMR) code Enzo2.0. The code was used to calculate the ideal magnetohydrodynamics (MHD) of initially spherical, uniform density and rotation clouds with density perturbations, i.e., the Boss and Bodenheimer (1979) standard isothermal test case for three dimensional (3D) hydrodynamics (HD) codes. After first verifying that Enzo reproduces the binary fragmentation expected for the non-magnetic test case, a large set of models was computed with varied initial magnetic field strengths and directions with respect to the cloud core axis of rotation (parallel or perpendicular), density perturbation amplitudes, and equations of state. Three significantly different outcomes resulted: (1) contraction without sustained collapse, forming a denser cloud core, (2) collapse to form a single protostar with significant spiral arms, and (3) collapse and fragmentation into binary or multiple protostar systems, with multiple spiral arms. Comparisons are also made with previous MHD calculations of similar clouds with barotropic equations of state. These results for the collapse of initially uniform density spheres illustrate the central importance of both magnetic field direction and field strength for determining the outcome of dynamic protostellar collapse.
description: 31 pages, 10 figures, 4 tables, in press, ApJ
title: Microsoft Excel как инструмент решения комбинаторных задач
Creators: name: ., А.Е. Аксенов – инженер, зам. начальника отдела, АО «Тайфун» (г. Калуга) E-mail: rtsys@mail.ru А.М. Донецков – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: dam1358@mail.ru А.С. Николаев – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: nikolanta@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Комбинаторные задачи занимают особое место при проектировании электронных устройств.
Цель. Предложить оригинальных подход к решению одной самых интересных комбинаторных задач – задачи покрытия.
Результаты. Рассмотрены различные варианты данной задачи и решения их средствами Excel на примере организации, занимающейся сопровождением разнообразных проектов. Приведено распределение сотрудников по проектам. Выбрано четыре варианта данной задачи и показаны способы их решения.
Выриант 1 задачи: необходимо оптимизировать структуру организации так, чтобы минимальное число сотрудников могли выполнять все проекты. В статье показано решение данной задачи методом Петрика. В работе рассмотрено решение данного варианта инструментарием Excel «Поиск решения». Найденное решение совпадает с одним из оптимальных, полученным алгебраическим образом.
Вариант 2 задачи: необходимо выбрать такое минимальное число сотрудников, чтобы в случае болезни одного из них, оставшиеся могли работать над этим проектом. То есть необходимо обеспечить дублирование. Чтобы решить задачу средствами Excel, необходимо только изменить условие. В результате было получено решение, что необходимо оставить четырех сотрудников для выполнения всех проектов с дублированием.
Вариант 3 задачи: считается, что сотрудники имеют разный приоритет в организации. Необходимо было подобрать таких сотрудников, чтобы их суммарный приоритет был максимальным.
Вариант 4 задачи: определенных сотрудников необходимо оставить. В работе было показано, что для решения данного варианта задачи инструментарием Excel достаточно добавления к таблице нового столбца, со значениями равным 1, если сотрудника в соответствующей строке необходимо оставить, и равным 0 в противном случае. Также в диалоге параметров поиска решения следует добавить число сотрудников, которых необходимо оставить.
Практическая значимость. На конкретном примере показано, что Excel является хорошим средством решения комбинаторных задач.
Precessing Warped Be Disk Triggering the Giant Outbursts in 2009 and 2011 in A 0535+262/V725 Tau
Creators: name: Moritani, Yuki
name: Nogami, Daisaku
name: Okazaki, Atsuo T.
name: Imada, Akira
name: Kambe, Eiji
name: Honda, Satoshi
name: Hashimoto, Osamu
name: Mizoguchi, Sahori
name: Kanda, Yuichi
name: Sadakane, Kozo
name: Ichikawa, Kohei
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We carried out optical high-dispersion spectroscopic monitoring of the Be disk in a Be/X-ray binary A 0535+262/V725 Tau from 2009 to 2012, covering two giant outbursts and several normal outbursts. This monitoring was performed in order to investigate variabilities of the Be disk due to the interaction with the neutron star in recent X-ray active phase from 2008 to 2011. Such variabilities give a clue to uncleared detailed mechanism for very bright X-ray outbursts, which are unique to some Be/X-ray binaries with relatively wide and eccentric orbit. In the previous letter (Moritani et al. 2011), a brief overview of line profile variabilities around the 2009 giant outburst was given and the possibility of a warped Be disk was discussed. In this paper, a full analysis of the Halpha line profiles as well as other line profiles is carried out. A bright blue component, or blue "shoulder", showing up after periastron indicates the presence of a dense gas stream toward the neutron star, which is associated with observed outbursts. We re-analyze the Halpha line profiles before 2009 (down to 2005) in order to investigate the variability of the the disk structure in the innermost region, which seems to have detached from the Be star surface by 2008. A redshifted enhanced component is remarkable in all emission lines observed around the 2009 giant outburst, occasionally forming a triple peak. These features indicate that the Be disk was warped in X-ray active phase. We estimate the position of the warped region from fitting the radial velocity of the redshifted enhanced component of Halpha, and find that it was very close to the periastron when two giant outbursts in 2009 and 2011 and a bright normal outburst in 2010 March occurred. These facts strongly suggest that the warped Be disk triggered these giant outbursts.
description: accepted to PASJ
A Systematic Literature Review of Machine Learning Approaches for the Prediction of Delivery Dates
Creators: name: Maier, Janine Tatjana
name: Rokoss, Alexander
name: Green, Thorben
name: Brkovic, Nikola
name: Schmidt, Matthias
Publisher: name: Hannover : publish-Ing.
Year: 2022
Subjects: subject: Delivery Date
subject: Production planning and control
subject: Prediction
subject: Machine learning
subject: Literature review
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Manufacturing companies tend to use standardized delivery times. The actual delivery times requested by the customers and the current capacity utilization of the production are often not taken into account. Therefore, such a simplification likely results in a reduction of the efficiency of the production. For example, it can lead to an obligation to use rush orders, an unrealistic calculation of inventories or an unnecessary exclusion of a Make-to-Order production. In the worst case, this results not only in an economically inadequate production, but also in a low achievement of logistic objectives and therefore in customer complaints. To avoid this, the delivery dates proposed to the customer must be realistic. Given the large number of customer orders, a wide range of products, varying order quantities and times, as well as various delivery times requested by customers, it is impossible to determine individual delivery dates manually. The ongoing digitalization and technological innovations offer new opportunities to support this task. In the literature, various approaches using machine learning methods for specific production planning and control tasks exist. As these methods are in general applicable for different tasks involving predictions, they can also assist during the determination of delivery dates. Therefore, this paper provides a comprehensive review of the state of the art regarding the use of machine learning approaches for the prediction of delivery dates. To identify research gaps the analyzed publications were differentiated according to several criteria, such as the overall objective and the applied methods. The majority of scientific publications addresses delivery dates only as a subordinate aspect while focusing on production planning and control tasks. Therefore, the interrelationships with several production planning and control tasks were considered during the analysis.
Understanding Galaxy Outflows as the Product of Unstable Turbulent Support
Creators: name: Scannapieco, Evan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The interstellar medium is a multiphase gas in which turbulent support is as important as thermal pressure. Sustaining this configuration requires both continuous turbulent stirring and continuous radiative cooling to match the decay of turbulent energy. While this equilibrium can persist for small turbulent velocities, if the one-dimensional velocity dispersion is larger than approximately 35 km/s, the gas moves into an unstable regime that leads to rapid heating. I study the implications of this turbulent runaway, showing that it causes a hot gas outflow to form in all galaxies with a gas surface density above approximately 50 solar masses/pc^2 corresponding to a star formation rate per unit area of 0.1$ solar masses/yr/kpc^2. For galaxies with escape velocities above 200 km/s, the sonic point of this hot outflow should lie interior to the region containing cold gas and stars, while for galaxies with smaller escape velocities, the sonic point should lie outside this region. This leads to efficient cold cloud acceleration in higher mass galaxies, while in lower mass galaxies, clouds may be ejected by random turbulent motions rather than accelerated by the wind. Finally, I show that energy balance cannot be achieved at all for turbulent media above a surface density of approximately 10^5 solar masses/pc^2.
description: 1 page, published in the Astrophysical Journal
Data Protection and Cybersecurity Certification Activities and Schemes in the Energy Sector
Creators: name: Nwankwo, Iheanyi
name: Stauch, Marc
name: Radoglou-Grammatikis, Panagiotis
name: Sarigiannidis, Panagiotis
name: Lazaridis, George
name: Drosou, Anastasios
name: Tzovaras, Dimitrios
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: Certification
subject: Cybersecurity
subject: Data protection
subject: Energy
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Cybersecurity concerns have been at the forefront of regulatory reform in the European Union (EU) recently. One of the outcomes of these reforms is the introduction of certification schemes for information and communication technology (ICT) products, services and processes, as well as for data processing operations concerning personal data. These schemes aim to provide an avenue for consumers to assess the compliance posture of organisations concerning the privacy and security of ICT products, services and processes. They also present manufacturers, providers and data controllers with the opportunity to demonstrate compliance with regulatory requirements through a verifiable third-party assessment. As these certification schemes are being developed, various sectors, including the electrical power and energy sector, will need to access the impact on their operations and plan towards successful implementation. Relying on a doctrinal method, this paper identifies relevant EU legal instruments on data protection and cybersecurity certification and their interpretation in order to examine their potential impact when applying certification schemes within the Electrical Power and Energy System (EPES) domain. The result suggests that the EPES domain employs different technologies and services from diverse areas, which can result in the application of several certification schemes within its environment, including horizontal, technological and sector-specific schemes. This has the potential for creating a complex constellation of implementation models and would require careful design to avoid proliferation and disincentivising of stakeholders. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
mvtnorm: New numerical algorithm for multivariate normal probabilities
Creators: name: Mi, Xuefei
name: Miwa, Tetsuhisa
name: Hothorn, Torsten
Publisher: name: Vienna : The R Foundation
Year: 2009
Subjects: subject: Algorithm
subject: mvtnorm
subject: Monte-Carlo
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: Miwa et al. (2003) proposed a numerical algorithm for evaluating multivariate normal probabilities. Starting with version 0.9-0 of the mvtnorm package (Hothorn et al., 2001; Genz et al., 2008), this algorithm is available to the R community. We give a brief introduction to Miwa's procedure and compare it, with respect to computing time and accuracy, to a quasi-randomized Monte-Carlo procedure proposed by Genz and Bretz (1999), which has been available through mvtnorm for some years now. The new algorithm is applicable to problems with dimension smaller than 20, whereas the procedures by Genz and Bretz (1999) can be used to evaluate 1000-dimensional normal distributions. At the end of this article, a suggestion is given for choosing a suitable algorithm in different situations.
New insights into the surface plasmon resonance (SPR) driven photocatalytic H2 production of Au-TiO2
Creators: name: Nie, Jinlin
name: Schneider, Jenny
name: Sieland, Fabian
name: Zhou, Long
name: Xia, Shuwei
name: Bahnemann, Detlef W.
Publisher: name: Cambridge : Royal Society of Chemistry
Year: 2018
Subjects: subject: Charge transfer
subject: Density functional theory
subject: Electron spin resonance spectroscopy
subject: Electron transport properties
subject: Energy transfer
subject: Gold compounds
subject: Hydrogen production
subject: Light
subject: Photolysis
subject: Plasmons
subject: Titanium dioxide
subject: Direct electron transfer
subject: Electron-hole pair excitation
subject: Inject electrons
subject: Interfacial charge transfer
subject: Laser flash photolysis
subject: Photo-catalytic
subject: Photocatalytic H2 evolution
subject: Trapped electrons
subject: Surface plasmon resonance
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The Surface Plasmon Resonance (SPR) driven photocatalytic H2 production upon visible light illumination (≥500 nm) was investigated on gold-loaded TiO2 (Au-TiO2). It has been clearly shown that the Au-SPR can directly lead to photocatalytic H2 evolution under illumination (≥500 nm). However, there are still some open issues about the underlying mechanism for the SPR-driven photocatalytic H2 production, especially the explanation of the resonance energy transfer (RET) theory and the direct electron transfer (DET) theory. In this contribution, by means of the EPR and laser flash photolysis spectroscopy, we clearly showed the signals for different species formed by trapped electrons and holes in TiO2 upon visible light illumination (≥500 nm). However, the energy of the Au-SPR is insufficient to overcome the bandgap of TiO2. The signals of the trapped electrons and holes originate from two distinct processes, rather than the simple electron-hole pair excitation. Results obtained by Laser Flash Photolysis spectroscopy evidenced that, due to the Au-SPR effect, Au NPs can inject electrons to the conduction band of TiO2 and the Au-SPR can also initiate e-/h+ pair generation (interfacial charge transfer process) upon visible light illumination (≥500 nm). Moreover, the Density Functional Theory (DFT) calculation provided direct evidence that, due to the Au-SPR, new impurity energy levels occurred, thus further theoretically elaborating the proposed mechanisms.
Viola riviniana Rchb.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. Riviniana Rchb. (V. silvestris Lam. ssp. Riviniana Tourlet) Cat. 38. l: Gueuroz (Closuit); Gueuroz-La Crete (J.); Les Marecottes-La Creuse (Schinz). - 2: Lens (Beauverd). - 3: Val de la Forclaz (Closuit); Mont Clou (P.); Mont-Chemin (Closuit); Le Guercet (P.); IVtayens-de-Riddes (J.); Törbel (Stehler); Zermatt (Beauverd); Visperterminen (P.). - 3a: Gabi (B. B.T. Z.). - 4: Merezenbachtal (Wilczek). Forma exilis Christ - 2: Siders (Christ).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Разработка специализированной библиотечной системы
Creators: name: ., Н.А. Борсук – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: borsuk.65@yandex.ru Е.О. Дерюгина – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: syvorova_eo@mail.ru В.А. Гартман – студент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: vadim.gartman@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. В большинстве библиотек для слабовидящих людей используется пакет программ ИРБИС, которая обладает определенной степенью избыточности и не достаточно универсальна для решения круг поставленных перед конкретной специализированной библиотеки.
Цель. Разработать программное обеспечение библиотечной системы, направленное на решение задачи ведения базы данных организации, модернизации этой БД, обработки специализированных запросов и вывода требуемой статистической информации.
Результаты. Для сравнения даны схемы функционала системы ИРБИС64 и разрабатываемой системой. Составлены этапы разработки программного обеспечения для достижения поставленных задач. Приведен пример работы и программного кода первого этапа разработки системы – синтаксического анализатора. Описаны функции и тонкости выбора информации синтаксическим анализатором. Разработана база данных для библиотеки на основе базы данных системы ИРБИС64. Расписаны поля таблиц и способы их дальнейшего использования в системе. Обоснован выбор средств разработки системы. Предложен пример пользовательского интерфейса, созданный с помощью Windows Forms. Выделены особенности работы сканера, позволяющего автоматизировать вход читателя в систему с помощью читательского билета. Представлен список используемых элементов на форме. Разработан алгоритм работы программного приложения. Описан способ распознавания читателя по категориям. Показан способ решения проблемы определения отдела, в который зашел читатель. Разработан модуль администрирования системы, позволяющий добавлять, удалять, изменять и искать читателей в базе данных. Описаны способы сбора статистики для создания библиотекой отчетности о числе посещений, книговыдаче, возвращенных книгах и новых читателей. Подведен итог процесса разработки специализированной системы..
Практическая значимость. Приведенный анализ основных этапов переходного процесса от использования глобальной библиотечной системы ИРБИС к разработке и реализации многофункционального программного продукта под нужды конкретной организации является актуальным и применимым к множеству специализированных библиотечных систем на любом предприятии. Выделены пути развития системы для более удобного использования системы внутри библиотеки и на устанавливаемых устройствах.
A DyP-type peroxidase of pleurotus sapidus with alkene cleaving activity
Creators: name: Krahe, Nina-Katharina
name: Berger, Ralf G.
name: Ersoy, Franziska
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Alkene cleavage
subject: Aryl alkenes
subject: Basidiomycota
subject: Biocatalysis
subject: Carotene degradation
subject: Dye-decolorizing peroxidase (DyP)
subject: Komagataella pfaffii
subject: Manganese
subject: Pleurotus sapidus
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Alkene cleavage is a possibility to generate aldehydes with olfactory properties for the fragrance and flavor industry. A dye-decolorizing peroxidase (DyP) of the basidiomycete Pleurotus sapidus (PsaPOX) cleaved the aryl alkene trans-anethole. The PsaPOX was semi-purified from the mycelium via FPLC, and the corresponding gene was identified. The amino acid sequence as well as the predicted tertiary structure showed typical characteristics of DyPs as well as a non-canonical Mn2+-oxidation site on its surface. The gene was expressed in Komagataella pfaffii GS115 yielding activities up to 142 U/L using 2,20-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) as substrate. PsaPOX exhibited optima at pH 3.5 and 40 ◦C and showed highest peroxidase activity in the presence of 100 µM H2O2 and 25 mM Mn2+. PsaPOX lacked the typical activity of DyPs towards anthraquinone dyes, but oxidized Mn2+ to Mn3+. In addition, bleaching of β-carotene and annatto was observed. Biotransformation experiments verified the alkene cleavage activity towards the aryl alkenes (E)-methyl isoeugenol, α-methylstyrene, and trans-anethole, which was increased almost twofold in the presence of Mn2+. The resultant aldehydes are olfactants used in the fragrance and flavor industry. PsaPOX is the first described DyP with alkene cleavage activity towards aryl alkenes and showed potential as biocatalyst for flavor production.
title: Адаптивная система управления питанием семейства мобильных бортовых вычислительных комплексов
Creators: name: ., Н.А. Борсук – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: borsuk.65@yandex.ru Е.О. Дерюгина – к.т.н., доцент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: syvorova_eo@mail.ru С.М. Лацин – студент, кафедра «Информационные системы и сети», Калужский филиал МГТУ им. Н.Э. Баумана E-mail: semen.vagon@mail.ru Я.В. Рябцев – инженер-конструктор, отдел инновационного проектирования, АО «Тайфун» (г. Калуга) E-mail: YaroslavRyabtsev@yandex.ru
Publisher: name: Издательство Радиотехника
Year: 2019

description: Постановка проблемы. Для повышения эффективности преобразователей энергии при сохранении или уменьшении размеров его компонентов разработчики вынуждены прибегать к использованию более сложных физических принципов их построения. В современных блоках питания стали широко применяться резонансные импульсные LLC-преобразователи
Цель. Рассмотреть один из возможных вариантов схемы адаптивной системы управления резонансным импульсным полномостовым LLC-преобразователем.
Результаты. В среде «Matlab» построена модель резонансного преобразователя, проблема управления которым определяется нелинейностью изменения его характеристик в окрестности резонансной частоты. Для решения этой проблемы предложено построение системы управления преобразователя как системы с замкнутыми цепями самонастройки. Для этого в корректирующее устройство системы управления преобразователем введены искусственная нейронная сеть и цифровой фильтр. Нейронная сеть и цифровой фильтр реализованы на программном уровне в специализированном микроконтроллере. На вход нейронной сети поступают значения выходных параметров преобразователя напряжения, а ее реакцией будут измененные значения коэффициентов передаточной функции цифрового фильтра корректирующего устройства. Новые значения коэффициентов фильтра меняют положение нулей и полюсов его передаточной функции, а также его коэффициент усиления, что и приводит к стабилизации работы преобразователя. Нейронная сеть имеет 26 нейронов, входной, выходной и два скрытых слоя. Работа преобразователя с адаптивной системой управления проверена на модели, построенной средствами пакета «Matlab». Отклик адаптивной системы на единичное воздействие представляется плавной, без перерегулирования переходной характеристикой. Длительность переходного процесса составила 60 мс, что в рассматриваемых условиях весьма удовлетворительный результат.
Практическая значимость. Разработанная модель преобразователя электроэнергии с адаптивной системой управления на базе нейронной сети показывает его превосходство над преобразователями с обычными регулятором. Дальнейшее совершенствование работы может развиваться в сторону совершенствования моделей нейронной сети и цифровых фильтров корректирующих устройств.
Fischzähne aus dem Oberjura Nordwesteuropas : Systematik, Biogeochemie und Palökologie
Creators: name: Mudroch, Alexander
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Late Jurassic
subject: Kimmeridgium
subject: Tithonium
subject: Oxfordium
subject: fish teeth
subject: actinopterygians
subject: elasmobranchs
subject: paleoecology
subject: geochemistry
subject: strontium
subject: isotopes
subject: 87Sr/86Sr
subject: REE
subject: delta18O
subject: Northern Germany
subject: Boulonnais
subject: seasonality
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Panchromatic spectral energy distributions of Herschel sources
Creators: name: Berta, S.
name: Lutz, D.
name: Santini, P.
name: Wuyts, S.
name: Rosario, D.
name: Brisbin, D.
name: Cooray, A.
name: Franceschini, A.
name: Gruppioni, C.
name: Hatziminaoglou, E.
name: Hwang, H. S.
name: Floc'h, E. Le
name: Magnelli, B.
name: Nordon, R.
name: Oliver, S.
name: Page, M. J.
name: Popesso, P.
name: Pozzetti, L.
name: Pozzi, F.
name: Riguccini, L.
name: Rodighiero, G.
name: Roseboom, I.
name: Scott, Douglas
name: Symeonidis, M.
name: Valtchanov, I.
name: Viero, M.
name: Wang, L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (abridged) Far-infrared Herschel photometry from the PEP and HerMES programs is combined with ancillary datasets in the GOODS-N, GOODS-S, and COSMOS fields. Based on this rich dataset, we reproduce the restframe UV to FIR ten-colors distribution of galaxies using a superposition of multi-variate Gaussian modes. The median SED of each mode is then fitted with a modified version of the MAGPHYS code that combines stellar light, emission from dust heated by stars and a possible warm dust contribution heated by an AGN. The defined Gaussian grouping is also used to identify rare sources. The zoology of outliers includes Herschel-detected ellipticals, very blue z~1 Ly-break galaxies, quiescent spirals, and torus-dominated AGN with star formation. Out of these groups and outliers, a new template library is assembled, consisting of 32 SEDs describing the intrinsic scatter in the restframe UV-to-submm colors of infrared galaxies. This library is tested against L(IR) estimates with and without Herschel data included, and compared to eight other popular methods often adopted in the literature. When implementing Herschel photometry, these approaches produce L(IR) values consistent with each other within a median absolute deviation of 10-20%, the scatter being dominated more by fine tuning of the codes, rather than by the choice of SED templates. Finally, the library is used to classify 24 micron detected sources in PEP GOODS fields. AGN appear to be distributed in the stellar mass (M*) vs. star formation rate (SFR) space along with all other galaxies, regardless of the amount of infrared luminosity they are powering, with the tendency to lie on the high SFR side of the "main sequence". The incidence of warmer star-forming sources grows for objects with higher specific star formation rates (sSFR), and they tend to populate the "off-sequence" region of the M*-SFR-z space.
description: Accepted for publication in A&A. Some figures are presented in low resolution. The new galaxy templates are available for download at the address http://www.mpe.mpg.de/ir/Research/PEP/uvfir_templ