cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Heuristic Approach for Web-Service Discovery and Selection
Creators: name: Karray, Achraf
name: Teyeb, Rym
name: Jemaa, Maher Ben
Publisher: name: arXiv
Year: 2013
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In today's businesses, service-oriented architectures represent the main paradigm for IT infrastructures. Indeed, the emergence of Internet made it possible to set up an exploitable environment to distribute applications on a large scale, and this, by adapting the notion of "service". With the integration of this paradigm in Business to Business Domain (B2B), the number of web services becomes very significant. Due to this increase, the discovery and selection of web services meeting customer requirement become a very difficult operation. Further, QoS properties must be taking into account in the web service selection. Moreover, with the significant number of web service, necessary time for the discovery of a service will be rather long. In this paper, we propose an approach based on a new heuristic method called "Bees Algorithm" inspired from honey bees behavior. We use this technique of optimization in order to discover appropriate web services, meeting customer requirements, in least time and taking into account the QoS properties.
title: Confucianism and Chinese Family Structure
Creators: name: Watts, Maren
Publisher: name: Utah State University
Year: 1989

description: Confucianism has dictated the structure of the family in Chinese society. The family is the foundation of the Chinese social structure. It has been the focal point of cultural and social issues for thousands of years. Various philosophers have contributed to the value system that places family life in such high esteem. Confucius, one of the major contributors, stressed the value of order in the family and the virtue of filial piety. Based upon his teachings, the practices and relationships existent in the ideal family, came to be known as the Confucian family model. This family structure, which defines the roles and relationships proper for family members to follow, has continued to the modern day.
The birthplace and age of the isolated neutron star RX J1856.5-3754
Creators: name: Mignani, R. P.
name: Putte, D. Vande
name: Cropper, M.
name: Turolla, R.
name: Zane, S.
name: Pellizza, L. J.
name: Bignone, L. A.
name: Sartore, N.
name: Treves, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: X-ray observations unveiled various types of radio-silent Isolated Neutron Stars (INSs), phenomenologically very diverse, e.g. the Myr old X-ray Dim INS (XDINSs) and the kyr old magnetars. Although their phenomenology is much diverse, the similar periods (P=2--10 s) and magnetic fields (~10^{14} G) suggest that XDINSs are evolved magnetars, possibly born from similar populations of supermassive stars. One way to test this hypothesis is to identify their parental star clusters by extrapolating backward the neutron star velocity vector in the Galactic potential. By using the information on the age and space velocity of the XDINS RX J1856.5-3754, we computed backwards its orbit in the Galactic potential and searched for its parental stellar cluster by means of a closest approach criterion. We found a very likely association with the Upper Scorpius OB association, for a neutron star age of 0.42+/-0.08 Myr, a radial velocity V_r^NS =67+/- 13$ km s^{-1}, and a present-time parallactic distance d_π^NS = 123^{+11}_{-15} pc. Our result confirms that the "true" neutron star age is much lower than the spin-down age (tau_{sd}=3.8 Myrs), and is in good agreement with the cooling age, as computed within standard cooling scenarios. The mismatch between the spin-down and the dynamical/cooling age would require either an anomalously large breaking index (n~20) or a decaying magnetic field with initial value B_0 ~ 10^{14} G. Unfortunately, owing to the uncertainty on the age of the Upper Scorpius OB association and the masses of its members we cannot yet draw firm conclusions on the estimated mass of the RX J1856.5-3754 progenitor.
description: 6 pages, accepted for publication on Monthly Notices of the Royal Astronomical Society
title: Facilitating Acceptance of Alternative Communication Devices in Classrooms by Teachers
Creators: name: Empey, Tracie
Publisher: name: Utah State University
Year: 1992

description: There exists a number of persons who lack adequate speech for communicative purposes. Many of the non-vocal children and adults from these populations have benefited from the development of various alternative communication devices. The non-vocal individual is one whose speech does not provide a functional means of meeting communication needs. However, this does not necessarily mean that the non-vocal individual has no speech or vocalization at all, nor does it mean that the individual may not develop fully functional speech in the future. (Vanderheiden, 1975). The devices used with these people allow an increase in the abilities to meet various communication needs. Such devices make it possible for the user to transmit desired messages.
Different Approaches to Community Evolution Prediction in Blogosphere
Creators: name: Gliwa, Bogdan
name: Bródka, Piotr
name: Zygmunt, Anna
name: Saganowski, Stanisław
name: Kazienko, Przemysław
name: Koźlak, Jarosław
Publisher: name: arXiv
Year: 2013
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Predicting the future direction of community evolution is a problem with high theoretical and practical significance. It allows to determine which characteristics describing communities have importance from the point of view of their future behaviour. Knowledge about the probable future career of the community aids in the decision concerning investing in contact with members of a given community and carrying out actions to achieve a key position in it. It also allows to determine effective ways of forming opinions or to protect group participants against such activities. In the paper, a new approach to group identification and prediction of future events is presented together with the comparison to existing method. Performed experiments prove a high quality of prediction results. Comparison to previous studies shows that using many measures to describe the group profile, and in consequence as a classifier input, can improve predictions.
description: SNAA2013 at ASONAM2013 IEEE Computer Society
title: Методика профессионального обучения
Creators: name: ELS IPR BOOKS
Publisher: name: Книта
Year: 2021

description: Практикум «Методика профессионального обучения» является элементом учебно-методического комплекса по дисциплине «Методика профессионального обучения». В учебном издании в полном объеме изложен материал практической части курса. Практикум предназначен для студентов, обучающихся по направлению подготовки 44.03.04 Профессиональное обучение (по отраслям).
Überkritisches Kohlendioxid als Reaktionsmedium für die Naturstoffsynthese : die enantioselektive Hydrolyse von 3-Hydroxysäureester
Creators: name: Hartmann, Thorsten
Publisher: name: Hannover : Universität Hannover
Year: 1999
Subjects: subject: Supercritical carbon dioxide
subject: enantioselective hydrolysis
subject: lipase
subject: Asymmetrische Reaktion
subject: Hydrolyse
subject: Hydroxycarbonsäureester
subject: Kohlendioxid
subject: Lipasen
subject: Überkritischer Zustand
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Zum chemischen Transport binärer und ternärer intermetallischer Phasen
Creators: name: Wirringa, Jörg
Publisher: name: Hannover : Universität Hannover
Year: 1999
Subjects: subject: Chemical vapour transport
subject: binary intermetallic phases
subject: ternary intermetallic phases
subject: thermodynamic calculations
subject: Intermetallische Verbindungen
subject: Transportreaktion
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Asymmetrische Darstellung von Glycosid-Mimetika und marinen Naturstoffsegmenten von Discodermolid, Spongistatin und Phorboxazol : Entwicklung eines synthetischen chiralen Pools
Creators: name: Misske, Andrea M.
Publisher: name: Hannover : Universität Hannover
Year: 1999
Subjects: subject: Asymmetrische Synthese
subject: Partialstruktur
subject: Phorboxazole
subject: Spongistatine
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Quantum Hall ferromagnetic phases in the Landau level N=0 of a graphene bilayer
Creators: name: Lambert, J.
name: Côté, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In a Bernal-stacked graphene bilayer, an electronic state in Landau level $% N=0$ is described by its guiding-center index $X$ (in the Landau gauge) and by its valley, spin, and orbital indices $ξ=\pm K,σ=\pm 1,$ and $% n=0,1.$ When Coulomb interaction is taken into account, the chiral two-dimensional electron gas (C2DEG) in this system can support a variety of quantum Hall ferromagnetic (QHF)\ ground states where the spins and/or valley pseudospins and/or orbital pseudospins collectively align in space. In this work, we give a comprehensive account of the phase diagram of the C2DEG at integer filling factors $ν\in [-3,3] $ in Landau level N=0 when an electrical potential difference $Δ_{B}$ between the two layers is varied. We consider states with or without layer, spin, or orbital coherence. For each phase, we discuss the behavior of the transport gap as a function of $Δ_{B},$ the spectrum of collective excitations and the optical absorption due to orbital pseudospin-wave modes. We also study the effect of an external in-plane electric field on a coherent state that has both valley and spin coherence and show that it is possible, in such a state, to control the spin polarization by varying the strength of the external in-plane electric field.
description: 21 pages, 13 eps figures
Splitting of photo-luminescent emission from nitrogen-vacancy centers in diamond induced by ion-damage-induced stress
Creators: name: Olivero, P.
name: Bosia, F.
name: Fairchild, B. A.
name: Gibson, B. C.
name: Greentree, A. D.
name: Spizzirri, P.
name: Prawer, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a systematic investigation on the spectral splitting of negatively charged, nitrogen-vacancy (NV-) photo-luminescent emission in single crystal diamond induced by strain engineering. The stress fields arise from MeV ion-induced conversion of diamond to amorphous and graphitic material in regions proximal to the centers of interest. In low-nitrogen sectors of a HPHT diamond, clearly distinguishable spectral components in the NV- emission develop over a range of 4.8 THz corresponding to distinct alignment of sub-ensembles which were mapped with micron spatial resolution. This method provides opportunities for the creation and selection of aligned NV- centers for ensemble quantum information protocols.
description: Submitted to "New Journal of Physics" (NJP/458519/PAP/133921): 30 pages, 12 figures, 2 tables, 61 references
Experimental assessment of the wettability and surface free energy of homogeneous and heterogeneous porous media
Creators: name: Ramírez-Flores, Juan Carlos
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Contact angle
subject: capillarity
subject: Lucas-Washburn equation
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
Experimental investigation and extended simulation of turbocharger non-adiabatic performance
Creators: name: Shaaban, Sameh
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Turbocharger
subject: non-adiabatic performance
subject: simulation
subject: centrifugal compressor
subject: radial turbine
subject: micro compressor
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Exploiting tag information for search and personalization
Creators: name: Paiu, Raluca
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Web 2.0
subject: information retrieval
subject: personalization
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Expression and potential functions of dipeptidyl peptidase 4 (CD26) in the asthmatic rat lung
Creators: name: Schade, Jutta
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Dipeptidyl peptidase 4
subject: bronchial asthma
subject: T cells
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Radio frequency spectroscopy measurement of the Landé g factor of the 5D5/2 state of Ba+ with a single trapped ion
Creators: name: Hoffman, Matthew R.
name: Noel, Thomas W.
name: Auchter, Carolyn
name: Jayakumar, Anupriya
name: Williams, Spencer R.
name: Blinov, Boris B.
name: Fortson, E. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report an improved measurement of the Landé g factor of the 5D5/2 state of singly ionized barium. Measurements were performed on single Doppler-cooled 138Ba+ ions in linear Paul traps using two similar, independent apparatuses. Transitions between Zeeman sublevels of the 6S1/2 and 5D5/2 states were driven with two independent, stabilized radio-frequency synthesizers using a dedicated electrode within each ion trap chamber. State detection within each Zeeman manifold was achieved with a frequency-stabilized fiber laser operating at 1.76 microns. By calculating the ratio of the two Zeeman splittings, and using the measured Landé g factor of the 6S1/2 state, we find a value of 1.200371(4stat)(6sys) for g of 5D5/2.
description: Five pages, 3 figures
Recent Formation of a Spiral Disk Hosting Progenitor Globular Clusters at the center of the Perseus Brightest Cluster Galaxy: II. Progenitor Globular Clusters
Creators: name: Lim, Jeremy
name: Wong, Emily
name: Ohyama, Youichi
name: Yeung, Michael C. H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We address the nature and origin of Super Star Clusters (SSCs) discovered by Holtzman et al. (1992) within a radius of $\sim$$5\,\rm kpc$ from the center of NGC 1275, the giant elliptical galaxy at the center of the Perseus Cluster. We show that, in contrast with the much more numerous population of SSCs subsequently discovered up to $\sim$$30\,\rm kpc$ from the center of this galaxy, the central SSC population have maximal masses an order of magnitude higher and a mass function with a shallower power-law slope. Furthermore, whereas the outer SSC population have ages spanning a few $\rm Myr$ to at least $\sim$$1\,\rm Gyr$, the central SSC population have ages strongly concentrated around $\sim$$500 \rm \, Myr$ with a $1\,σ$ dispersion of $\sim$$100\,\rm Myr$. These SSCs share a close spatial and temporal relationship with the "central spiral," which also has a radius $\sim$$5\,\rm kpc$ centered on NGC 1275 and a characteristic stellar age of $\sim$$150\,\rm Myr$ (Paper I). We argue that both the central SSC population and the central spiral formed from gas deposited by a residual cooling flow, with the SSCs forming first followed by the formation of the stellar body of the central spiral $\sim$$300$-$400\,\rm Myr$ later. The ages of the central SSC population imply that they are able to withstand very strong tidal fields near the center of NGC 1275, making them genuine progenitor globular clusters. Evidently, a spiral disk hosting progenitor globular clusters has recently formed at the center of a giant elliptical galaxy.
description: 11 pages, 6 figures, accepted by ApJ
Observation of the spin Seebeck effect in epitaxial Fe3O4 thin films
Creators: name: Ramos, R.
name: Kikkawa, T.
name: Uchida, K.
name: Adachi, H.
name: Lucas, I.
name: Aguirre, M. H.
name: Algarabel, P.
name: Morellon, L.
name: Maekawa, S.
name: Saitoh, E.
name: Ibarra, M. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the first experimental observation of the spin Seebeck effect in magnetite thin films. The signal observed at temperatures above the Verwey transition is a contribution from both the anomalous Nernst (ANE) and spin Seebeck effects (SSE). The contribution from the ANE of the Fe3O4 layer to the SSE is found to be negligible due to the resistivity difference between Fe3O4 and Pt layers. Below the Verwey transition the SSE is free from the ANE of the ferromagnetic layer and it is also found to dominate over the ANE due to magnetic proximity effect on the Pt layer.
description: 13 pages, 3 figures
Factors controlling virus-vector-host plant interactions : the model system Frankliniella occidentalis and Tomato spotted wilt virus
Creators: name: Ogada, Pamella Akoth
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Frankliniella occidentalis
subject: tospovirus
subject: Tomato spotted wilt virus
subject: vector competence
subject: haplodiploidy
subject: intraspecific variation
subject: predictive models
subject: vector manipulation hypothesis
subject: innate immunity
subject: Vektorkompetenz
subject: Haplodiploidie
subject: intraspezifische Variation
subject: Vorhersagemodelle
subject: angeborene Immunität
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Simulation von stark fehlangepassten und hochresonanten Leitungsnetzwerken im Zeit- und Frequenzbereich
Creators: name: Schulz, Philip
name: Markgraf, Peter
name: Magdowski, Mathias
Publisher: name: Aachen : Apprimus
Year: 2022
Subjects: subject: EMV
subject: Verträglichkeit
subject: Elektromagnetik
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In vielen industriellen Anwendungen werden verzweigte Leitungsnetzwerke zur Übertragung von Daten zwischen elektronischen Steuergeräten genutzt. Abhängig von der Netzwerktopologie können dabei unerwünschte Reflexions- und Transmissionseffekte durch Verzweigungsstellen und fehlangepasste Leitungen auftreten, welche die Signalintegrität negativ beeinflussen können und somit die maximal mögliche Taktfrequenz der Signalübertragung verringern. Aufgrund verschiedener Anforderungen an die Positionierung der Steuergeräte und die Wahl der Leitungslängen ist es in der Praxis oftmals nicht möglich, das Netzwerk im Hinblick auf das EMV-Verhalten optimal aufzubauen. Deshalb soll in diesem Beitrag anhand des in Bild 1 dargestellten Beispielnetzwerks gezeigt werden, wie aus den vorhandenen Bauelementen eine Topologie mit möglichst schlechtem Einschwingverhalten aufgebaut werden kann, um daraus Handlungsempfehlungen abzuleiten, welche Konfigurationen bei der Auslegung von Netzwerktopologien nach Möglichkeit vermieden werden sollten. Zur Illustration des Vorgehens wird ein Netzwerk aus 4 elektronischen Steuergeräten (engl. ECU: electronic control unit) und maximal 4 Leitungen verwendet. Die mit vorgegebenen Bauelementen möglichen Netzwerktopologien werden dazu im Zeitbereich simuliert und anschließend wird das hochresonante Verhalten der schlechtesten Netzwerktopologie mit Hilfe von Frequenzbereichssimulationen verdeutlicht. Darüber hinaus wird ein Vorgehen zur Visualisierung der Ausbreitung der Spannungs- und Stromwellen auf dem Leitungsnetzwerk mit dem schlechtesten Einschwingverhalten vorgestellt. Die Idee zu diesem Beitrag liegt die Aufgabenstellung des Student Contest 2021 des German Chapters der IEEE EMC Society zugrunde.
Helices 2 and 3 are the initiation sites in the PrPc -> PrPsc transition
Creators: name: Chen, Jie
name: Thirumalai, Devarajan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: It is established that prion protein is the sole causative agent in a number of diseases in humans and animals. However, the nature of conformational changes that the normal cellular form PrPC undergoes in the conversion process to a self-replicating state is still not fully understood. The ordered C-terminus of PrPC proteins has three helices (H1, H2, and H3). Here, we use the Statistical Coupling Analysis (SCA) to infer co-variations at various locations using a family of evolutionarily related sequences, and the response of mouse and human PrPCs to mechanical force to decipher the initiation sites for transition from PrPC to an aggregation prone PrP* state. The sequence-based SCA predicts that the clustered residues in non-mammals are localized in the stable core (near H1) of PrPC whereas in mammalian PrPC they are localized in the frustrated helices H2 and H3 where most of the pathogenic mutations are found. Force-extension curves and free energy profiles as a function of extension of mouse and human PrPC in the absence of disulfide (SS) bond between residues Cys179 and Cys214, generated by applying mechanical force to the ends of the molecule, show a sequence of unfolding events starting first with rupture of H2 and H3. This is followed by disruption of structure in two strands. Helix H1, stabilized by three salt-bridges, resists substantial force before unfolding. Force extension profiles and the dynamics of rupture of tertiary contacts also show that even in the presence of SS bond the instabilities in most of H3 and parts of H2 still determine the propensity to form the PrP* state. In mouse PrPC with SS bond there are about ten residues that retain their order even at high forces.
Efficiency of deep neural networks for joint angle modeling in digital gait assessment
Creators: name: Conte Alcaraz, Javier
name: Moghaddamnia, Sanam
name: Peissig, Jürgen
Publisher: name: Heidelberg : Springer
Year: 2021
Subjects: subject: Deep neural network
subject: Digital gait analysis
subject: Machine learning
subject: Nonlinear modeling
subject: Inertial measurement unit
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Reliability and user compliance of the applied sensor system are two key issues of digital healthcare and biomedical informatics. For gait assessment applications, accurate joint angle measurements are important. Inertial measurement units (IMUs) have been used in a variety of applications and can also provide significant information on gait kinematics. However, the nonlinear mechanism of human locomotion results in moderate estimation accuracy of the gait kinematics and thus joint angles. To develop “digital twins” as a digital counterpart of body lower limb joint angles, three-dimensional gait kinematic data were collected. This work investigates the estimation accuracy of different neural networks in modeling lower body joint angles in the sagittal plane using the kinematic records of a single IMU attached to the foot. The evaluation results based on the root mean square error (RMSE) show that long short-term memory (LSTM) networks deliver superior performance in nonlinear modeling of the lower limb joint angles compared to other machine learning (ML) approaches. Accordingly, deep learning based on the LSTM architecture is a promising approach in modeling of gait kinematics using a single IMU, and thus can reduce the required physical IMUs attached on the subject and improve the practical application of the sensor system.
The Analysis of Long-Term Frequency and Damping Wandering in Buildings Using the Random Decrement Technique
Creators: name: Mikael, Ali
name: Gueguen, Philippe
name: Bard, Pierre-Yves
name: Roux, Philippe
name: Langlais, Mickael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The characterization and monitoring of buildings is an issue that has attracted the interest of many sectors over the last two decades. With the increasing use of permanent, continuous and real-time networks, ambient vibrations can provide a simple tool for the identification of dynamic building parameters. This study is focused on the long-term variation of frequency and damping in several buildings, using the Random Decrement Technique (RDT). RDT provides a fast, robust and accurate long-term analysis and improves the reliability of frequency and damping measurements for structural health monitoring. This reveals particularly useful information in finding out precisely how far changes in modal parameters can be related to changes in physical properties. This paper highlights the reversible changes of the structure's dynamic parameters, correlated with external forces, such as temperature and exposure to the sun. Contrasting behaviors are observed, including correlation and anti-correlation with temperature variations.
Using Exclusive Web Crawlers to Store Better Results in Search Engines' Database
Creators: name: Tourani, Ali
name: Danesh, Amir Seyed
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Crawler-based search engines are the mostly used search engines among web and Internet users, involve web crawling, storing in database, ranking, indexing and displaying to the user. But it is noteworthy that because of increasing changes in web sites search engines suffer high time and transfers costs which are consumed to investigate the existence of each page in database while crawling, updating database and even investigating its existence in any crawling operations. "Exclusive Web Crawler" proposes guidelines for crawling features, links, media and other elements and to store crawling results in a certain table in its database on the web. With doing this, search engines store each site's tables in their databases and implement their ranking results on them. Thus, accuracy of data in every table (and its being up-to-date) is ensured and no 404 result is shown in search results since, in fact, this data crawler crawls data entered by webmaster and the database stores whatever he wants to display.
description: 8pages, 6figures
Farm-level risk analysis of German apple production
Creators: name: Röhrig, Maren Berit Kerstin
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: risk attitude
subject: risk perception
subject: risk behavior
subject: utility efficient programming
subject: apple production
subject: Risikoeinstellung
subject: Risikowahrnehmung
subject: Risikoverhalten
subject: Nutzeneffiziente Programmierung
subject: Apfelproduktion
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: In Germany, apples are the most relevant fruit with respect to both, domestic production and consumption. Weather events and volatile prices make commercial apple production a risky business. Since apple production with an orchard lifetime of around 20 years is a long-term investment, future-oriented risk management is a prerequisite for economic success. In Germany, quality and yield are at risk from adverse weather events such as late frosts and hail. Especially in the south there is an increasing demand for appropriate frost insurance solutions, which were previously only available in neighboring countries. Besides weather-dependent risks, the effects of market risks, i.e. fluctuating sales prices, have to be considered when developing strategies. There are currently no studies on the development of an integrated cultivation strategy for German apple production that take the influence of risks into account. This thesis provides new insights into the risk attitudes and risk perceptions of apple growers – the two determinants of risk behavior. Based on data collected from 134 apple growers in the two main production regions in Germany, a normative analysis is carried out by developing a utility-efficient decision model that indicates how apple growers should protect themselves against risks from a rational point of view. The model reveals which apple varieties and risk management instruments provide the most efficient combinations in apple production for a rational but risk-averse decision maker. The results of the risk attitude analysis show that apple growers in Germany are less risk averse than anticipated. The stochastic dominance analysis is carried out on one hectare level and shows that frost irrigation and subsidized hail insurance are the most efficient instruments in the North, but the common practice of using hail nets remains the most favorable risk management strategy in the South. The results of the whole farm model are in line with these findings and show that the degree of risk aversion has only a minor influence on the portfolio of optimal cultivation strategies. In detail, apple production without frost irrigation may lead to high yield losses in northern Germany and subsidies do not compensate for the monetary loss that can occur in the South due to the lack of hail protection nets.
The Yang-Mills theory as a massless limit of a massive nonabelian gauge model
Creators: name: Slavnov, A. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A gauge invariant infrared regularization of the Yang-Mills theory applicable beyond perturbation theory is constructed.
description: 8 pages, no figures
title: Removing Vehicle Speed from Apparent Wind Velocity
Creators: name: Weiss, Austin
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Variable-rate technologies for sprayer applications stand to increase efficacy by ensuring the right amount of chemical is applied at the right location. However, external environmental factors such as droplet drift caused by variable ambient condition, are not yet integrated into modern sprayer systems. Real-time wind velocity measurements can be used to control droplet spectra for reducing spray drift by actuating a variable-orifice nozzle. This work aimed to develop data processing methods needed to filter noise and remove vehicle speed from wind velocity measurements collected with an ultrasonic anemometer aboard a moving platform. Using a global navigation satellite system (GNSS), vehicle speed was calculated in the field and subtracted from apparent wind velocity for comparison to static measurements. Experiments under stationary and dynamic sensor deployments were used to develop an algorithm to provide instantaneous local wind velocity and to better understand the local spatiotemporal variability of wind under field conditions.
description: Copyright © Austin Meade Weiss 2019
description: Funding information: This research was supported by the United States Department of Agriculture.
Using Coronal Cells to Infer the Magnetic Field Structure and Chirality of Filament Channels
Creators: name: Sheeley,, N. R.
name: Martin, S. F.
name: Panasenco, O.
name: Warren, H. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Coronal cells are visible at temperatures of ~ 1.2 MK in Fe XII coronal images obtained from the Solar Dynamics Observatory (SDO) and Solar Terrestrial Relations Observatory (STEREO) spacecraft. We show that near a filament channel, the plumelike tails of these cells bend horizontally in opposite directions on the two sides of the channel like fibrils in the chromosphere. Because the cells are rooted in magnetic flux concentrations of majority polarity, these observations can be used with photospheric magnetograms to infer the direction of the horizontal field in filament channels and the chirality of the associated magnetic field. This method is similar to the procedure for inferring the direction of the magnetic field and the chirality of the fibril pattern in filament channels from H-alpha observations. However, the coronal cell observations are easier to use and provide clear inferences of the horizontal field direction for heights up to ~ 50 Mm into the corona.
description: accepted for publication in The Astrophysical Journal
Faulting in rigid pavement system of highways
Creators: name: El-Nakib, Mohamed El
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: Cyclic loads
subject: faulting
subject: finite element
subject: unbound granular materials
subject: UMAT
subject: non-linear behavior
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
title: Two Essays on Input Substitution and Optimal Decision Making in Crop and Livestock Production Systems
Creators: name: Allison, John T., Jr.
Publisher: name: University of Kentucky Libraries
Year: 2019

description: The thesis presented consists of two essays that analyze input substitution and decision making in crop and livestock production systems. The first essay consists of a whole-farm analysis that sought to optimize feed mixes and enterprise combinations for an organic dairy operation in the Southeastern United States. This was accomplished through mathematical programming where whole-farm net returns were maximized, and total feed costs were minimized simultaneously for four milk production level cases. Additionally, the sensitivity of the system and break-even milk price were explored. Results suggest substitutability in ration components where an increase in supplemental feeds is justified by additional milk output and sales. The second essay utilizes econometric methods and hedonic modeling to explore factors that drive the price of row crop planters on the used machinery market. Factors relating to make, age, condition, planter specifications, sale type, spatial aspects, seasonality, and year of the sale were analyzed. Results suggest non-linear relationships for row number and age relative to price and interactions between variables make and age that imply varying depreciation depending on the manufacturer. An additional break-even analysis relating to pasture yields and planter purchase price was conducted to explore these primary concepts in further detail.
description: Copyright © John T. Allison Jr. 2019
description: Funding information: U.S. Department of Agriculture. Develop Science-based Recommendations to Efficiently Manage Forages, Herd Health, and Productivity on Organic Dairies in the Southeastern US. NIFA-OREI Grant 2015-51300-24140.
Felsic melts in the oceanic crust : an experimental study on their generation, phase equilibria, and trace element partitioning
Creators: name: Erdmann, Martin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Experimental petrology
subject: phase equilibria
subject: differentiation
subject: fractional crystallization
subject: partial melting
subject: fast-spreading mid-ocean ridge
subject: oceanic plagiogranite
subject: granoblastic hornfels
subject: conductive boundary layer
subject: contamination
subject: trace elements
subject: partition coefficients
subject: Experimentelle Petrologie
subject: Phasengleichgewichte
subject: Differenzierung
subject: fraktionierte Kristallisation
subject: Teilschmelzung
subject: schnell-spreizende mittelozeanische Rücken
subject: ozeanische Plagiogranite
subject: granoblastischer Hornfels
subject: Grenzschicht der Wärmeleitung
subject: Kontaminierung
subject: Spurenelemente
subject: Verteilungskoeffizienten
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: [no abstract]
title: Практикум по орфографии и пунктуации. Ч.1. Орфография
Creators: name: ELS IPR BOOKS
Publisher: name: Книта
Year: 2021

description: Учебно-методическое пособие предназначено студентам, изучающим учебную дисциплину «Практикум по орфографии и пунктуации», и содержит теоретический и практический материал для освоения орфографии русского языка, упражнения, текстовые диктанты разного объема для обобщающего повторения орфографии и пунктуации, минисловарь. Содержание пособия направлено на совершенствование самостоятельной работы студентов, качественное усвоение и отработку орфограмм, повторение пунктограмм в рамках всей учебной дисциплины. Данное учебное издание предназначено для студентов, обучающихся по направлению подготовки 44.03.01 «Педагогическое образование. Начальное образование», 44.03.05 «Педагогическое образование (с двумя профилями). Начальное образование. Английский язык».
Der Ozean im Labor. Messen mit Licht und Schatten
Creators: name: Jähne, Bernd
Publisher: name: Ruperto Carola
Year: 2015

description: Aus den quantitativen Wissenschaften ist die Bildverarbeitung nicht mehr wegzudenken. Sie ist „das“ Mittel geworden, um komplexe zeitlich und räumlich variierende Prozesse zu erfassen und zu analysieren. Was die moderne Bildverarbeitung heute zu leisten vermag und welche Möglichkeiten neue Methoden schon in naher Zukunft erbringen werden, zeigt exemplarisch ein am Heidelberger Institut für Umweltphysik entwickeltes Verfahren zur Vermessung mikroskopisch dünner Grenzschichten an wellenbewegten Wasseroberflächen: Indem die Forscher Methoden zur Sichtbarmachung und spezifischen Beleuchtungstechniken mit der Bildverarbeitung kombinieren, können sie den Austausch von Spurengasen wie Kohlendioxid zwischen Luft und Wasser sichtbar machen.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
Toric and tropical compactifications of hyperplane complements
Creators: name: Denham, Graham
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C35, 05B35

description: These lecture notes are based on lectures given by the author at the summer school "Arrangements in Pyrénées" in June 2012. We survey and compare various compactifications of complex hyperplane arrangement complements. In particular, we review the Gel'fand-MacPherson construction, Kapranov's visible contours compactification, and De Concini and Procesi's wonderful compactification. We explain how these constructions are unified by some ideas from the modern origins of tropical geometry. The paper contains a few new arguments intended to make the presentation as self-contained as possible.
description: 26 pages
X-shaped radio sources as parent population of core-dominated triple blazars
Creators: name: Marecki, Andrzej
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: There are a number of theories explaining the nature of the so-called X-shaped radio sources. According to one of them, an X-shaped source is indeed a cross whose one arm is associated with a double radio source that has changed its orientation in space, while the other arm is associated with relic lobes and its position indicates the former direction of the jets. Here, I present two new arguments in favour of this conjecture. Firstly, it is obvious that shortly after the repositioning, the pair of the new lobes must be very compact. To illustrate such a possibility, I show an EVN image of the central component of a triple source J1625+2712. When resolved, it appears as a compact double that is not aligned with the outer double so the whole source is indeed X-shaped. Secondly, I consider the situation when one of the arms of an X-shaped source is not intrinsically short but foreshortened by projection. I show two examples of triple sources whose central component is a blazar and the span of the lobes that straddle it amounts to more than 6\times10^5 pc. An assumption that sources of this kind have one axis, and so the lobes are beamed in the same way the core is, would require unrealistically huge deprojected linear sizes. Therefore, I claim that core-dominated triples (CDT) like these two have two axes: the one pertinent to the relic lobes is not pointed towards us so they are not beamed/foreshortened, whereas the axis pertinent to the jets makes a small angle with the line of sight so that a blazar is observed. It follows that X-shaped sources must be actual crosses and they are the parent (unbeamed) population of at least some CDT blazars, particularly those with large overall sizes.
description: 8 pages, 2 figures, Proceedings of "Resolving The Sky - Radio Interferometry: Past, Present and Future", April 2012, Manchester, UK
Approximate controllability and optimal control of impulsive fractional semilinear delay differential equations with non-local conditions
Creators: name: Mahto, Lakshman
name: Abbas, Syed
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 47H10, 49N25

description: In this paper we study the approximate controllability and existence of optimal control of impulsive fractional semilinear delay differential equations with non-local conditions. We use Sadovskii's fixed point theorem, semigroup theory of linear operators and direct method for minimizing a functional to establish our results. At the end we give an example to illustrate our analytical findings.
description: 15 pages
Online Non-linear Centroidal MPC for Humanoid Robot Locomotion with Step Adjustment
Creators: name: Romualdi, Giulio
name: Dafarra, Stefano
name: L'Erario, Giuseppe
name: Sorrentino, Ines
name: Traversaro, Silvio
name: Pucci, Daniele
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper presents a Non-Linear Model Predictive Controller for humanoid robot locomotion with online step adjustment capabilities. The proposed controller considers the Centroidal Dynamics of the system to compute the desired contact forces and torques and contact locations. Differently from bipedal walking architectures based on simplified models, the presented approach considers the reduced centroidal model, thus allowing the robot to perform highly dynamic movements while keeping the control problem still treatable online. We show that the proposed controller can automatically adjust the contact location both in single and double support phases. The overall approach is then tested with a simulation of one-leg and two-leg systems performing jumping and running tasks, respectively. We finally validate the proposed controller on the position-controlled Humanoid Robot iCub. Results show that the proposed strategy prevents the robot from falling while walking and pushed with external forces up to 40 Newton for 1 second applied at the robot arm.
description: Paper accepted in ICRA 2022
Widespread Methanol Emission from the Galactic Center
Creators: name: Yusef-Zadeh, F.
name: Cotton, W.
name: Viti, S.
name: Wardle, M.
name: Royster, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the discovery of a widespread population of collisionally excited methanol J = 4_{-1} to 3$_0 E sources at 36.2 GHz from the inner 66'x18' (160x43 pc) of the Galactic center. This spectral feature was imaged with a spectral resolution of ~16.6 km/s taken from 41 channels of a VLA continuum survey of the Galactic center region. The revelation of 356 methanol sources, most of which are maser candidates, suggests a large abundance of methanol in the gas phase in the Galactic center region. There is also spatial and kinematic correlation between SiO (2--1) and CH3OH emission from four Galactic center clouds: the +50 and +20 km/s clouds and G0.13-0.13 and G0.25+0.01. The enhanced abundance of methanol is accounted for in terms of induced photodesorption by cosmic rays as they travel through a molecular core, collide, dissociate, ionize, and excite Lyman Werner transitions of H2. A time-dependent chemical model in which cosmic rays drive the chemistry of the gas predicts CH3OH abundance of 10^{-8} to 10^{-7} on a chemical time scale of 5x10^4 to 5x10^5 years. The average methanol abundance produced by the release of methanol from grain surfaces is consistent with the available data.
description: 21 pages, 4 figures, 1 table, ApJL (in press)
Theta(13) and charged Lepton Flavor Violation in "warped" A(4) models
Creators: name: Kadosh, Avihay
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We recently proposed a spontaneous A$_{4}$ flavor symmetry breaking scheme implemented in a warped extra dimensional setup to explain the observed pattern of quark and lepton masses and mixings. The main features of this choice are the explanation of fermion mass hierarchies by wave function overlaps, the emergence of tribimaximal (TBM) neutrino mixing and zero quark mixing at the leading order and the absence of tree-level gauge mediated flavor violation. Quark mixing and deviations from TBM neutrino mixing are induced by the presence of bulk A$_4$ flavons, which allow for "cross-brane" interactions and a "cross-talk" between the quark and neutrino sectors. In this work, we study the constraints associated with the recent measurements of $θ_{13}\approx 9^\circ$ by RENO and Daya Bay, forcing every model that predicts TBM neutrino mixing to account for the significant deviation of $θ_{13}$ from 0, while keeping the values of $θ_{12}$ and $θ_{23}$ close to their central experimental values. We then proceed to study in detail the RS-A$_4$ contributions to $μ\to e,3e$, generated at the tree level by virtue of anomalous $Z$ couplings. These couplings arise from gauge and fermionic KK mixing effects after electroweak symmetry breaking. Since the experimental sensitivity for $BR(μ\to e,3e)$ is expected to increase by five orders of magnitude within the next decade, it is shown that the RS-A$_4$ lepton sector can be significantly constrained. Finally, we show that when "cross-brane" interactions are turned off, the $Z$ couplings are protected against all anomalous contributions and a strong correlation between $θ_{13}$ and the deviation from maximality of $θ_{23}$ is found.
description: 28 pages, 13 figures
Cavefish Clocks. Telling Time in the Dark
Creators: name: Foulkes, Nicholas S.
Publisher: name: Ruperto Carola
Year: 2015

description: The circadian clock is the chronometer of life. Among other things, this ‘biological clock’ determines our waking, sleeping and mealtimes, and it influences our heart rate, blood pressure and body temperature. The clock is set by external stimuli, usually light, to follow a 24- hour rhythm. But what about organisms whose habitats are so isolated from the earth’s surface that they are never reached by a single ray of sunlight? In their research, Heidelberg zoologists address the question whether these animals have no sense of time at all, or whether they use other natural ‘time givers’ to regulate their activity and biological processes.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht