Relevant bibliographies by topics / Stark form

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Stark form'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Stark form"

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Lantoine, Gregory, and Ryan P. Russell. "Complete closed-form solutions of the Stark problem." Celestial Mechanics and Dynamical Astronomy 109, no. 4 (February 5, 2011): 333–66. http://dx.doi.org/10.1007/s10569-010-9331-1.

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Verostko, Roman. "Form, Grace and Stark Logic: 30 Years of Algorithmic Drawing." Leonardo 43, no. 3 (June 2010): 230–31. http://dx.doi.org/10.1162/leon.2010.43.3.230.

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This essay outlines the personal experiences, influences and ideas that underlie 60 years of Roman Verostko's artwork and that drew him to embrace “algorithmic art.” The author spells out qualities of form unique to computer-assisted algorithmic drawing as well as the genre's pitfalls and discusses his good fortune to have been an active participant in what Peter Weibel has labeled the “Algorithmic Revolution.” For his pioneering work, Roman Verostko was awarded the 2009 SIGGRAPH Lifetime Achievement Award.
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Najar, Hatem, and Monia Raissi. "Eigenvalues asymptotics for Stark operators." e-Journal of Analysis and Applied Mathematics 2019, no. 1 (January 1, 2019): 1–14. http://dx.doi.org/10.2478/ejaam-2019-0001.

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Abstract We give the eigenvalues asymptotics for the Stark operator of the form −Δ+F x, F > 0 on L2([0, d]). This is given in the case when F is small enough or sufficiently large. We impose various boundary conditions. The proof is based on the asymptotics of the specialized Airy functions.
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Bermúdez-Montaña, Marisol, Marisol Rodríguez-Arcos, Renato Lemus, José M. Arias, Joaquín Gómez-Camacho, and Emilio Orgaz. "Algebraic DVR Approaches Applied to Describe the Stark Effect." Symmetry 12, no. 10 (October 19, 2020): 1719. http://dx.doi.org/10.3390/sym12101719.

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Two algebraic approaches based on a discrete variable representation are introduced and applied to describe the Stark effect in the non-relativistic Hydrogen atom. One approach consists of considering an algebraic representation of a cutoff 3D harmonic oscillator where the matrix representation of the operators r2 and p2 are diagonalized to define useful bases to obtain the matrix representation of the Hamiltonian in a simple form in terms of diagonal matrices. The second approach is based on the U(4) dynamical algebra which consists of the addition of a scalar boson to the 3D harmonic oscillator space keeping constant the total number of bosons. This allows the kets associated with the different subgroup chains to be linked to energy, coordinate and momentum representations, whose involved branching rules define the discrete variable representation. Both methods, although originating from the harmonic oscillator basis, provide different convergence tests due to the fact that the associated discrete bases turn out to be different. These approaches provide powerful tools to obtain the matrix representation of 3D general Hamiltonians in a simple form. In particular, the Hydrogen atom interacting with a static electric field is described. To accomplish this task, the diagonalization of the exact matrix representation of the Hamiltonian is carried out. Particular attention is paid to the subspaces associated with the quantum numbers n=2,3 with m=0.
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Podszun, Rupprecht. "Verfahren, Form, Durchsetzung: Die vernachlässigte rechtliche Seite der Wirtschaftsordnung." ORDO 2019, no. 70 (March 16, 2019): 50–86. http://dx.doi.org/10.1515/ordo-2020-0006.

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ZusammenfassungÖkonomische Forschung zu rechtlichen Themen ist häufig stark an den Auswirkungen einer materiell-rechtlichen Regel oder dem Verteilungsergebnis eines Rechtsstreits orientiert. Das wird dem Untersuchungsgegenstand nicht gerecht, da für das Recht der Weg zur Generierung eines solchen materiellen Ergebnisses konstitutiv ist. Interdisziplinäre Forschung muss sich daher auf Verfahren, Form und Durchsetzung ebenso einlassen wie auf materielle Regelungen. Für die Ordnung der Wirtschaft sind dabei die bislang vernachlässigten privatrechtlichen (nicht öffentlich-rechtlichen) Mechanismen besonders interessant: Privatrechtliche Institutionen ordnen das Zusammenleben in ähnlicher Form wie Märkte Angebot und Nachfrage koordinieren. Werden die Eigenrationalitäten des (Verfahrens-)Rechts respektiert, von denen einige im Beitrag vorgestellt werden, kann ökonomische Forschung einen Beitrag zur Lösung zentraler rechtspolitischer Debatten leisten, etwa zur Aufladung privatrechtlicher Mechanismen mit öffentlichen Ordnungsansprüchen zur Verfahrensdauer und zum Zugang zum Recht.
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Brown, Jeffrey M., and Miroslav Kolesik. "Properties of Stark Resonant States in Exactly Solvable Systems." Advances in Mathematical Physics 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/125832.

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Properties of Stark resonant states are studied in two exactly solvable systems. These resonances are shown to form a biorthogonal system with respect to a pairing defined by a contour integral that selects states with outgoing wave boundary conditions. Analytic expressions are derived for the pseudonorm, dipole moment, and coupling matrix elements which relate systems with different strengths of the external field. All results are based on explicit calculations made possible by a newly designed integration method for combinations of Airy functions representing resonant eigenstates. Generalizations for one-dimensional systems with short-range potentials are presented, and relations are identified which are likely to hold in systems with three spatial dimensions.
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O’Dey, Dan mon. "Anatomische Rekonstruktion der Regio clitoridis nach weiblicher Genitalbeschneidung und anderen Verletzungen." Die Hebamme 34, no. 01 (February 2021): 30–34. http://dx.doi.org/10.1055/a-1332-8132.

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Die weibliche Genitalbeschneidung (FGM / C) und andere Verletzungen der Klitoris führen zu vulvo-vaginalen und uro-genitalen Form- und Funktionsstörungen, die betroffene Frauen körperlich und psychisch stark beeinträchtigen. Die operative anatomische Rekonstruktion der Regio clitoridis verfolgt das Ziel, deren Form und Funktion wiederherzustellen. Hintergrundwissen über den Eingriff hilft bei der Nachbetreuung – einer interdisziplinären Aufgabenstellung.
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Rode, Jörg. "Panasonic übernimmt Blue Yonder für 6 Milliarden Euro." Lebensmittel Zeitung 73, no. 17 (2021): 33. http://dx.doi.org/10.51202/0947-7527-2021-17-033-6.

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Scottsdale/Osaka. Der japanische Elektronikkonzern Panasonic kauft für knapp 6 Mrd. Euro Blue Yonder. Das ist einer der weltgrößten Anbieter von Retail-Software – darunter Programme für Prognose und Auto-Dispo. Blue Yonder setzt stark auf Künstliche Intelligenz (KI) in Form von Machine Learning.
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Iyer, Suneeti Nathani, and David J. Ertmer. "Relationships Between Vocalization Forms and Functions in Infancy: Preliminary Implications for Early Communicative Assessment and Intervention." American Journal of Speech-Language Pathology 23, no. 4 (November 2014): 587–98. http://dx.doi.org/10.1044/2014_ajslp-13-0091.

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Purpose This preliminary study explored relationships between form and function in prelinguistic vocalizations to increase our understanding of early communicative development and to provide potential clinical implications for early communicative assessment and intervention. Method Twenty typically developing infants—5 infants in each of 4 age groups, from 3 to 20 months of age—were included. Vocalizations from these infants had previously been categorized for their form (Nathani, Ertmer, & Stark, 2006) and function (Stark, Bernstein, & Demorest, 1993) characteristics. In the present study, cross-classification tabulations between form and function were conducted to examine relationships between vocalization types and their apparent uses. Results As anticipated, earlier developing forms were mostly associated with earlier developing functions, and later developing forms were mostly associated with later developing functions. However, there were some exceptions such that some forms were associated with a variety of functions, and vice versa. Conclusions The results suggest that some forms are more tightly coupled to function than others in the prelinguistic and early linguistic period. Preliminary implications for developmental theory, future research, and clinical applications are discussed. Larger, longitudinal studies with typical and atypical populations and stricter methodological controls are needed to validate these findings.
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Knuesel. "Pränatale Infektion als Risikofaktor altersbedingter neurodegenerativer Erkrankungen." Praxis 100, no. 5 (March 1, 2011): 299–304. http://dx.doi.org/10.1024/1661-8157/a000451.

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Die Alzheimer-Demenz ist die häufigste Form altersbedingter neuro-degenerativer Erkrankungen. Neben wenigen genetischen sind zahlreiche nicht-genetische Risikofaktoren bekannt, die den Krankheitsbeginn und -verlauf signifikant beeinflussen. Die molekularen Ursachen und kausalen Zusammenhänge sind allerdings weitgehend unbekannt. Wir haben ein Mausmodell etabliert, das mittels pränataler Infektion eine langfristige Dysregulation inflammatorischer Modulatoren verursacht und damit einen zentralen altersassoziierten Faktor moduliert. Diese frühe Immunstimulation hat einen stark beschleunigenden Effekt auf altersbedingte Neuropathologien. Falls zu dieser pränatalen auch noch eine systemische Infektion im Alter kommt, wird dieser Effekt signifikant verstärkt. Diese Daten zeigen, dass eine pränatale Infektion das Risiko einer Demenzerkrankung stark erhöhen und in Kombination mit einer zusätzlichen Immunstimulation im Alter ein kritischer Auslöser einer progressiven Neuropathologie darstellen kann.
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Dissertations / Theses on the topic "Stark form"

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Johnson, Sandra. "En STARK specialtidskrift : Arbetet med att ta fram en grafisk mall till en specialtidskrift från STARK Magasin, samt en diskussion om hur båda tidskrifterna kan göras om till e-format." Thesis, Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-19183.

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The goal with this project was to develop a graphic template for a new magazine about running, STARK Löpning. Besides the looks of the graphic elements, sections in the magazine would be developed. Finally, a discussion is made about how the magazine can be remade into an electronic format. Content analyses has been made regarding magazines with both a main and a specific orientation, to review the graphic relationship between them. A content  analysis regarding a competing magazine about running was also made. An unstructured interview was done with Art Director Petrus Iggström, to find out his way of working when he creates new graphic templates for magazines. The discussion concerning the electronic format was done based on previous research in the subject. The graphic relationship between main and specific magazines turned out to not be significant, they had few similarities. It was often showed that elements regarding the magazine s’identity had been changed, for example text fonts. This could be because the specific magazines are sighted towards a different target audience than the main magazine, and therefor wants an identity of its own. It’s an easy process to remake the magazines STARK Magasin and STARK Löpning into an electronic format, but none of the services that were looked closely upon in this essay were fitting for both passive and active readers. Nor did the services have a good enough browsing feature. For example, if the reader wants to read an article that was advertised on the cover page, it was not possible to go directly to the article from the cover.
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Wiman, Robin, and Alexander Persson. "Marknadseffektivitet och det systematiska felet : Finansanalytikers och Ekonomijournalisters marknadspåverkan." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-44914.

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Forskningen kring effektiva marknader är uppdelad; ena sidan påstår att marknaden är fullständigt effektiv och det inte går att skapa någon form av överavkastning. Andra sidan hävdar tvärtemot att endast historisk information reflekteras i dagens priser. På kort sikt kan det finns en viss ineffektivitet och de flesta erkänner att marknaden innehåller anomalier Syftet med denna studie är att undersöka om det existerar systematiska fel beträffande informationsflöden som pekar mot att den svenska aktiemarknaden inte är av semi-stark form eller stark form av effektivitet Vi utgår från tre metodologiska ställningstaganden; utgångspunkt, forskningsansats samt kunskapssyn. En deduktivt kvantitativ metod tillämpas och vi applicerar metoden för event study. Vi finner stöd för att det finns systematiska fel i marknaden beträffande informationsflöden i form av aktierekommendationer. Resultaten antyder att den svenska aktiemarknaden inte är av starkt effektiv form och i ett fall av fyra finner vi att den inte heller besitter semi-stark form.
Research concerning efficient markets are divided into two camps; the one hand, claims that the market is fully efficient and it is not possible to create any kind of excess returns. The other side argues the contrary that only historical information are reflected in today’s prices. Short term, there is some inefficiency and most recognize that the market contain anomalies The purpose is to investigate whether there exist indications regarding flows of information to the Swedish stock market suggesting a semi-strong form or strong form of efficiency. We start from three methodological statements; starting point, the research approach and epistemological beliefs. A deductive quantitative methodology is used, and we apply the method of event study. We find evidence for the existence of systematic errors in the market in terms of flows of information in the form of stock recommendations. The results suggest that the Swedish stock market is not of the strong efficient form and in one case out of four, we find that it does not possess the semi-strong form.
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Wingert, Daniel. "Evolutionsgleichungen und obere Abschätzungen an die Lösungen des Anfangswertproblems." Doctoral thesis, Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-107849.

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In dieser Arbeit werden die zu einem m-sektoriellen Operator assoziierten Halbgruppen betrachtet, die die Lösungen des Anfangswertproblems der zugehörigen Evolutionsgleichung beschreiben. Es wird eine 1987 von Davies veröffentlichte Methode zur Abschätzung dieser Halbgruppen verallgemeinert. Einen Schwerpunkt bilden die zu Dirichlet-Formen assoziierten Markov-Halbgruppen. Für diese werden die Resultate spezialisiert und der Zusammenhang zur intrinsischen Metrik dargelegt. Die Arbeit schließt mit verschiedenen Beispielen, die zeigen, wie mit diesen Verallgemeinerungen von Davies Methode neue Anwendungsgebiete erschlossen werden können
This thesis is about m-sectorial operators and their associated semigroups describing the solutions of the initial value problem of the corresponding evolution equation. We generalize a method published by Davies 1987 to estimate these semigroups. A focus is set on Markov semigroups associated with Dirchlet forms. The results are applied to them and the connection to the intrinsic metric is presented. The thesis ends with different examples showing how this generalization of Davies method can be applied into new fields of application
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Hellbratt, Douglas, and Anton Rosenberg. "En ineffektiv möjlighet : En kvantitativ studie på den svenska aktiemarknadens effektivitet utifrån nyckeltalen P/E och B/M." Thesis, Södertörns högskola, Institutionen för samhällsvetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-45934.

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Statistics and public reports indicate that stock investment has developed to a popular and growing investment trend among individuals, where the underlying motivational factor is the possibility to generate a return on the investment, and therefore make money. A recurrent and controversial question in the financial context is how the individual investor should proceed to generate a return higher than the market. Although scientific research claims the market to be efficient, situations occur where individual performers manage to surpass the market, which is explained by deviations from the market’s efficiency. The deviations are known as market anomalies, and from the beginning of time several key ratio-anomalies have existed and disappeared. Despite their disappearance, some of these key ratios continue demonstrating the ability of forecasting returns. Therefore, the purpose of this essay is to use these key ratios to investigate the semi-strong form of market efficiency on the Swedish stock market during the period of 2013-2019. The execution will be done using key ratio-constructed stock portfolios based on the P/E-ratio, the B/M-ratio, and a combination of these. The portfolios will be compared both among themselves and towards a benchmark index with the intention to analyze if a significant return can be determined. According to the results, portfolios based on the P/E-ratio as well as the combination of the P/E-ratio and the B/M-ratio, can be used in portfolio construction to generate significantly risk-adjusted return on the Swedish stock market. This implicate that, during this investigation period, the Swedish stock market is not completely efficient according to the semi-strong form of market efficiency.
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Johnston, Katharine G. "Observational signatures of massive star formation : an investigation of the environments in which they form, and the applicability of the paradigm of low-mass star formation." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1895.

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This thesis presents both a study of the cluster-scale environments in which massive stars form, investigating in particular how the ionized gas in these regions relates to the molecular star-forming material, as well as detailed studies of two luminous forming stars, AFGL 2591 and IRAS 20126+4104, to determine whether they are forming similarly to their low-mass counterparts. The results of this work include the identification of 35 HII regions (20 newly discovered) via a radio continuum survey of ionized gas towards 31 molecular cluster-forming clumps. The observed ionized gas was found to be preferentially associated with the clumps, which were shown to have a range of evolutionary stages. The massive star formation efficiency was determined for the clumps with associated ionized gas, and a relationship was found between the mass of the clumps and the mass of their embedded massive stars. By modelling the SEDs and images of AFGL 2591 and IRAS 20126+4104, it was found that the geometry of their circumstellar material was generally consistent with an envelope plus disk, similar to that expected for low-mass protostars. However, within the central ~1800 AU, the mid-IR images of IRAS 20126+4104 were better described by only a flattened envelope, suggesting that the radiation from IRAS 20126+4104 may be affecting the regions closest to the star. Observations of the ionized and molecular gas towards AFGL 2591 were carried out, and a photoionization code was developed to interpret these observations. The results showed that the observed 3.6 cm emission is likely to be produced by both a shock-ionized jet and a hypercompact HII region that does not appear to have disrupted the jet or the large-scale circumstellar environment. In addition, the C¹⁸O(1-0) emission observed towards AFGL2591 traces the densest parts of the outflow, with the blue-shifted emission exhibiting many of the properties of the outflows from low-mass protostars.
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Queiroz, Anna Bárbara de Andrade. "Star horse : a Bayesian tool for determining masses, ages, distances and extinction for field stars." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/180515.

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Nos encontramos em uma localização vantajosa para o estudo da formação e evolução de galáxias espirais. Situados no disco da Via-Láctea, somos capazes de fazer observações detalhadas sobre as estrelas individuais que a compõem. Com o avanço tecnológico das últimas décadas, foi possível coletar um grande conjunto de informações, (e.g. composição química, cinemática, astrometria e parâmetros atmosféricos), com alta resolução para uma vasta parte do volume Galáctico. Com o objetivo de compreender melhor a nossa Galáxia, desenvolvemos uma ferramenta, chamada StarHorse, que estima parâmetros como distâncias, idades, massas e avermelhamento utilizando informação disponível em levantamentos espectroscópicos, fotométricos e astrométricos. O código StarHorse estima os parâmetros através de um método Bayesiano, que constrói uma distribuição de probabilidade a partir do cálculo de verossimilhança entre observações e modelos de evolução teórica e a partir de priores Galácticos bem conhecidos. Os parâmetros que o StarHorse estima são cruciais para estudos de arqueologia Galáctica. Com eles é possível investigar a estrutura, o histórico de formação estelar, a função de massa inicial, o mapa tridimensional da nossa Galáxia e também adicionar vínculos a modelos quemodinâmicos da Via Láctea Neste trabalho, focaremos na descrição e validação do método, testando sua aplicabilidade em levantamentos recentes de espectroscópica, astrometria e fotometria. Também disponibilizamos catálogos com distâncias e extinção para comunidade astronômica. As nossas distâncias e extinções se tornaram referência dentro da colaboração APOGEE e foram liberadas junto com o seu Data Release 14. Ademais, catálogos foram liberados para os surveys RAVE, Gaia-ESO e GALAH. Neste trabalho, exploramos os resultados do StarHorse, especialmente os resultados APOGEE, em um contexto amplo de arqueologia Galáctica.
We are in an advantageous position to study the formation and evolution of disk galaxies. By being inside the Milky Way, we are able to make detailed observations about the individual stars that compose it. With the technological revolution of the latest years, it has been possible to collect a massive set of information, (e.g. chemical composition, kinematics, astrometry, and atmospheric parameters), with high resolution for a large portion of the Galactic volume. With the goal to understand better our Galaxy, we developed a tool, called StarHorse, that can estimate distances, ages, masses, and extinction from the available spectroscopic, astrometric, and photometric information. StarHorse makes these estimates through a Bayesian method, that builds a probability distribution over the models by calculating a likelihood function between observation and stellar evolution models, and by using common knowledge about our Galaxy as priors. The parameters that StarHorse estimates are crucial to Galactic archaeology studies. With them, we can investigate the structure, the star formation history, the initial mass function, the three-dimensional dust map of our Galaxy, and provide constraints to chemodynamical models of the Milky Way. In this work, we focus on the description and validation of the method, testing its applicability in recent spectroscopic and astrometric surveys. We also make available catalogs with distances and extinctions to the astronomy community. Our distances and extinctions became a reference inside the APOGEE-team and were released as part of the SDSS Data Release 14. Moreover, we made available catalogs also to other spectroscopic surveys such as Gaia-ESO, RAVE, and GALAH. In this work, we also explore these results, especially for APOGEE, in a broad Galactic archaeology context.
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Berkolaiko, Gregory. "Quantum star graphs and related systems." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340359.

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Popescu, Cristian D. "On a refined stark conjecture for function fields /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487940308431494.

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Hubrig, S., K. Scholz, Wolf-Rainer Hamann, M. Schöller, Richard Ignace, I. Ilyin, K. G. Gayley, and Lidia M. Oskinova. "Searching for a Magnetic Field in Wolf-Rayet Stars Using FORS 2 Spectropolarimetry." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/2694.

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To investigate if magnetic fields are present in Wolf–Rayet stars, we selected a few stars in the Galaxy and one in the Large Magellanic Cloud (LMC). We acquired low-resolution spectropolarimetric observations with the European Southern Observatory FORS 2 (FOcal Reducer low dispersion Spectrograph) instrument during two different observing runs. During the first run in visitor mode, we observed the LMC Wolf–Rayet star BAT99 7 and the stars WR 6, WR 7, WR 18, and WR 23 in our Galaxy. The second run in service mode was focused on monitoring the star WR 6. Linear polarization was recorded immediately after the observations of circular polarization. During our visitor observing run, the magnetic field for the cyclically variable star WR 6 was measured at a significance level of 3.3σ (〈Bz〉 = 258 ± 78 G). Among the other targets, the highest value for the longitudinal magnetic field, 〈Bz〉 = 327 ± 141 G, was measured in the LMC star BAT99 7. Spectropolarimetric monitoring of the star WR 6 revealed a sinusoidal nature of the 〈Bz〉 variations with the known rotation period of 3.77 d, significantly adding to the confidence in the detection. The presence of the rotation-modulated magnetic variability is also indicated in our frequency periodogram. The reported field magnitude suffers from significant systematic uncertainties at the factor of 2 level, in addition to the quoted statistical uncertainties, owing to the theoretical approach used to characterize it. Linear polarization measurements showed no line effect in the stars, apart from WR 6. BAT99 7, WR 7, and WR 23 do not show variability of the linear polarization over two nights.
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Mentz, Jacobus Johannes. "A search for pulsating B-type variable stars in the southern open clusters NGC 6204 and Hogg 22 / Jacobus Johannes (Jaco) Mentz." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9520.

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The theory of stellar evolution and stellar structure relies on the observation of stars in di erent phases of their evolutionary cycle. The relation between observations and theory can be strengthened by obtaining observational data of a large sample of stars in a particular evolutionary phase. The search for Cephei stars, as conducted in this study, can contribute to the sample of known Cephei stars, where these interesting stars are massive non-supergiant early B-type stars, displaying pulsating behaviour which is not well understood. Stars tend to form in clusters where it can therefore be expected that young massive stars can be found in open clusters. For this reason two young southern open clusters were observed in order to search for B-type pulsating stars. The region of NGC 6204 and Hogg 22 was observed over a period of thirteen nights in Johnson B, V and I bands. NGC 6204 is believed to be the oldest cluster of the two at a distance of 0.8 kpc while the much younger Hogg 22 is more distant at 2.8 kpc. These two open clusters are located 6 arcminutes apart which made it possible to observe them simultaneously with a 12.8 12.8 arcminute eld of view. The observations were done with the newly installed 1600 telescope of the North-West University, South Africa. In order to do a variability search, periodic stars need to be identi ed from the cluster data, where a typical data set may contain thousands of scienti c images. In addition to the main motivation for this study, a pipeline was created in order to automate the photometry and data reduction processes. A Lomb-Scargle transform was applied to the stellar light curves in order to identify periodic sources. 354 signi cantly periodic stars were identi ed from the 3182 observed stars. Amongst them, two new possible Cephei stars were found together with a possible slowly pulsating B star (SPB), and numerous eclipsing binary systems. By using photometry of this region obtained by Forbes & Short (1996), instrumental magnitudes were transformed to a standard system in order to compare photometry results. From the constructed colour magnitude diagram of the two clusters, it could be seen that some stars, indicated by Forbes & Short (1996) to be cluster members, were in fact eld stars belonging to neither cluster. The reduction and photometry pipeline was implemented successfully on the data set, which also highlighted the importance of instrumentation and correct data analysis procedures. Possible improvements were identi ed in order to overcome di culties experienced during this study.
Thesis (MSc (Space Physics))--North-West University, Potchefstroom Campus, 2013
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Books on the topic "Stark form"

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How did the first stars and galaxies form? Princeton, N.J: Princeton University Press, 2010.

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Vidović, Mirko. Starc i fore (ne more). Zagreb: I.T. graf. d.o.o., 2009.

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Crews, Thaddeus R. Programming right form the start with Visual Basic.Net. Upper Saddle River, NJ: Prentice Hall, 2004.

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Hamilton, Alexander E. Miller & Starr California real estate forms. 2nd ed. [St. Paul, Minn.]: Thomson/West, 2005.

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Ziethen, Sanne, and Nina Peter, eds. Währung - Krise - Emotion. Bielefeld, Germany: transcript Verlag, 2021. http://dx.doi.org/10.14361/9783839455043.

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Die vielfältigen Äußerungsformen der jüngsten Wirtschaftskrisen und die derzeitigen Herausforderungen in Europa machen die Notwendigkeit deutlich, die nach wie vor als rational geltende Ökonomie auf ihre parallel ausgebildete »stark spezialisierte emotionale Kultur« (Eva Illouz) hin zu untersuchen. Diese äußert sich vor allem in Krisendiskursen in Politik, Presse, Wirtschaft oder Literatur, in denen Emotionen besonders deutlich als kollektive »Form der Geisteshaltung bzw. der Einstellung zur Welt« (Richard Wollheim) sichtbar werden. Die Beiträger*innen des Bandes gehen den emotionalen Dimensionen dieser Krisendiskurse in Vergangenheit und Gegenwart aus den Perspektiven von Soziologie, Ökonomik, Kultur-, Geschichts- und Literaturwissenschaft nach.
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Monologo sulle stelle: Forme della luce dalle origini alle fini dei mondi antichi. Torino: Bollati Boringhieri, 1994.

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Hooker, Janet. Start here. Harlow: Longman, 1985.

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Decker, Kate Delano-Condax. Riding: Ride with confidence, safety, and good form, right from the start. 2nd ed. Guilford, Conn: Lyons Press, 2007.

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Mark, Warda, ed. How to start a business in Massachusetts: With forms. 2nd ed. Naperville, IL: Sphinx Pub., 2000.

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Mark, Warda, ed. How to start a business in Michigan: With forms. 2nd ed. Naperville, Il: Sphinx Pub., 1998.

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Book chapters on the topic "Stark form"

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Reid, I. Neill. "Where Do Stars Form?" In Dynamics of Young Star Clusters and Associations, 317–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-47290-3_20.

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Subramanian, Vasan. "Forms." In Pro MERN Stack, 173–205. Berkeley, CA: Apress, 2017. http://dx.doi.org/10.1007/978-1-4842-2653-7_9.

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Subramanian, Vasan. "React Forms." In Pro MERN Stack, 267–313. Berkeley, CA: Apress, 2019. http://dx.doi.org/10.1007/978-1-4842-4391-6_10.

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Bertram, Grischa. "»Bäume oder Beton?« − Zur Bedeutung des Bildhaften im strategischen Framing lokalen Protests am Beispiel einer Kleingartenkolonie." In Bilder, soziale Medien und das Politische, 125–48. Bielefeld, Germany: transcript Verlag, 2021. http://dx.doi.org/10.14361/9783839450406-006.

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Am Beispiel eines Wahlplakats für einen Bürgerentscheid über Erhalt oder Bebauung einer Berliner Kleingartenanlage, das auch als »Sharepic«, Bildbeitrag und Kopfgrafik sowie Banner und Flyer genutzt wurde, wird in diesem Beitrag die Bedeutung solcher Bilder innerhalb des strategischen Framing im Protesthandeln lokaler Bürgerinitiativen diskutiert. Das Bild ist dabei Teil einer qualitativen tiefen Einzelfallstudie, die im Rahmen einer planungswissenschaftlichen Dissertation analysiert wurde. Als zentrale Analyseperspektive dient jedoch der Framing-Ansatz der sozialwissenschaftlichen Protestforschung, der jedoch auch als eine Form der Produktion und Konstruktion alternativer Problemlösungsansätze verstanden wird. Die Fallstudie zeigt einen komplexen Planungs- und Protestprozess, der im bildhaften strategischen Framing stark vereinfacht dargestellt wird. Zugleich verändert sich aber im Hinblick auf die Wahlentscheidung durch die verwendete Bildsprache auch der Fokus der Kampagne deutlich. Diese Diskrepanz wird darüber hinaus zum Anlass genommen, über den vermeintlich postpolitischen Charakter lokalen Bürgerprotests zu diskutieren.
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Bucciarelli, B., M. G. Lattanzi, and T. Bellone. "Matching and Mapping of Stars in Star Catalogues." In Data Acquisition and Analysis for Multimedia GIS, 223–36. Vienna: Springer Vienna, 1996. http://dx.doi.org/10.1007/978-3-7091-2684-4_18.

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Haus, Juliane. "Forschungsfeld experimentelle Wirtschaftswissenschaften." In Wissen, Kommunikation und Gesellschaft, 7–41. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-33019-4_2.

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ZusammenfassungExperimente bilden ein klassisches Verfahren der empirischen Sozialforschung. In den unterschiedlichen sozialwissenschaftlichen Disziplinen ist der Einsatz von Experimenten dabei verschiedentlich stark ausgeprägt. In den Wirtschaftswissenschaften und insbesondere im Bereich der Verhaltensökonomie gibt es eine deutliche Affinität für dieses Verfahren der empirischen Forschung. Hier insbesondere in der Form des Laborexperiments. Für die intensive Auseinandersetzung mit dem Phänomen des wirtschaftswissenschaftlichen Laborexperiments und seiner Eigengesetzlichkeit ist es hilfreich, sich in einem ersten Schritt mit den allgemeinen methodologischen Grundlagen des Experiments in den Sozialwissenschaften auseinanderzusetzen. Dieser Abschnitt widmet sich deshalb der Einführung zentraler Konzepte und methodologischer Ansprüche des experimentellen Forschungsdesigns, wie beispielsweise der Isolation, Kontrolle und Manipulation hypothesenrelevanter Variablen, dem Parallelgruppenmodell, den Verfahren der Randomisierung und Anonymisierung sowie dem Anspruch einer Kausalitätsanalyse, welche mit dem experimentellen Vorgehen verbundenen wird. Zur besseren Einordnung des Laborexperiments werden im Anschluss die drei (in der quantitativen Forschung) typischen Formen des Experiments – Laborexperiment, Feldexperiment und natürliches Experiment – kurz voneinander abgrenzt. Nach der Darstellung der Grundlagen des experimentellen Forschungsdesigns erfolgt im Kapitel 2.2 eine kurze Einführung in das Feld der experimentellen Wirtschaftsforschung und die feldinternen Begründungen für die Anwendung von experimentellen Datenerhebungsverfahren.
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Stockman, H. S., and John Mather. "NGST: Seeing the First Stars and Galaxies Form." In Galaxy Interactions at Low and High Redshift, 493–99. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4665-4_144.

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Bartholomew, P., and Sarah Vinson. "STARS." In Software Systems for Structural Optimization, 251–83. Basel: Birkhäuser Basel, 1993. http://dx.doi.org/10.1007/978-3-0348-8553-9_13.

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Cheli, Federico, Ferdinando Mapelli, Roberto Viganò, and Davide Tarsitano. "Start." In Advanced Microsystems for Automotive Applications 2010, 39–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16362-3_5.

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Borgo, Mauro, Alessandro Soranzo, and Massimo Grassi. "Start Programming." In MATLAB for Psychologists, 67–106. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-2197-9_4.

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Conference papers on the topic "Stark form"

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Zhang, Jiani, Xingjian Shi, Shenglin Zhao, and Irwin King. "STAR-GCN: Stacked and Reconstructed Graph Convolutional Networks for Recommender Systems." In Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19}. California: International Joint Conferences on Artificial Intelligence Organization, 2019. http://dx.doi.org/10.24963/ijcai.2019/592.

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We propose a new STAcked and Reconstructed Graph Convolutional Networks (STAR-GCN) architecture to learn node representations for boosting the performance in recommender systems, especially in the cold start scenario. STAR-GCN employs a stack of GCN encoder-decoders combined with intermediate supervision to improve the final prediction performance. Unlike the graph convolutional matrix completion model with one-hot encoding node inputs, our STAR-GCN learns low-dimensional user and item latent factors as the input to restrain the model space complexity. Moreover, our STAR-GCN can produce node embeddings for new nodes by reconstructing masked input node embeddings, which essentially tackles the cold start problem. Furthermore, we discover a label leakage issue when training GCN-based models for link prediction tasks and propose a training strategy to avoid the issue. Empirical results on multiple rating prediction benchmarks demonstrate our model achieves state-of-the-art performance in four out of five real-world datasets and significant improvements in predicting ratings in the cold start scenario. The code implementation is available in https://github.com/jennyzhang0215/STAR-GCN.
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Brar, Gurinder Singh, Yogeshwar Hari, and Dennis K. Williams. "Buckling of Axisymmetric Cylindrical Shells of Variable Thickness: Finite Difference Solution." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26234.

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This paper presents the third of a series of solutions to the buckling of imperfect cylindrical shells subjected to an axial compressive load. In particular, the initial problem reviewed is the case of a homogeneous cylindrical shell of variable thickness that is of an axisymmetric nature. The equilibrium equations as first introduced by Donnell over seventy years ago are discussed and reviewed in establishing a basis for embarking upon a solution that utilizes finite difference methods to solve the resulting equilibrium and compatibility equations. The ultimate objective of these calculations is to achieve a quantitative assessment of the critical buckling load considering the small axisymmetric deviations from the nominal cylindrical shell wall thickness. Clearly in practice, large diameter, thin wall shells of revolution that form stacks are never fabricated with constant diameters and thicknesses over the entire length of the assembly. The method and results described herein are in stark contrast to the “knockdown factor” approach currently utilized in ASME Code Case 2286-1. The results obtained by finite difference method agree well with those published by Elishakoff and Williams for the prediction of buckling load.
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Szklany, Steven, and John L. Crassidis. "Multiple-Model Adaptive Estimation for Star Identification with Two Stars." In AIAA Guidance, Navigation, and Control Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2017. http://dx.doi.org/10.2514/6.2017-1519.

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Fu, Jiaxing, Xingyu Liu, and Sichuan Xu. "Investigation on Cold Start for Proton Exchange Membrane Fuel Cell Stack." In SAE WCX Digital Summit. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2021. http://dx.doi.org/10.4271/2021-01-0738.

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"Start." In 2017 7th World Engineering Education Forum (WEEF). IEEE, 2017. http://dx.doi.org/10.1109/weef.2017.8467134.

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Chapman, Daniel, Joy Didier, Shaul Hanany, Seth Hillbrand, Michele Limon, Amber Miller, Britt Reichborn-Kjennerud, Greg Tucker, and Yury Vinokurov. "STARS: a software application for the EBEX autonomous daytime star cameras." In SPIE Astronomical Telescopes + Instrumentation, edited by Gianluca Chiozzi and Nicole M. Radziwill. SPIE, 2014. http://dx.doi.org/10.1117/12.2057181.

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van den Heuvel, E. P. J. "Double Neutron Stars: Evidence For Two Different Neutron‐Star Formation Mechanisms." In THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. American Institute of Physics, 2007. http://dx.doi.org/10.1063/1.2774916.

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Huynh, B. Phuoc. "Coat Thickness in Wire-Coating Process With Corrugated Die." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39694.

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Effects of die wall corrugation on coat thickness t in the wire-coating process are investigated numerically, using non-isothermal viscous fluids of a Newtonian type as coating material and a finite element method. Corrugation is assumed to be in the form of sine waves near die exit. It can be seen that shorter wavelength or larger wave amplitude depresses t, whereas higher Nahme-Griffith number Na increases it; however, the changes in t are only very small. t is also depressed slightly when die wall’s exit angle θ is large and negative; but in general it is insensitive to variation in θ when this is small. That t is only slightly affected by Na and θ is in stark contrast to extrudate’s swelling behaviour in simple extrusion through annular dies under comparable conditions. Furthermore, wire speed does not affect t over the ranges of Na value considered here. One interesting aspect relating to isothermal smooth-wall situation is that the ratio t/ΔR, ΔR being annular gap size, is nearly constant and equal to 0.5, independent of wire radius ratio Rwire/Rdie. This constancy is in contrast to the variation in coat thickness that results from a pure drag flow in the annulus.
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Neve, Oliver. "Modular CLT – Time to swallow the offsite pill." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0641.

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<p>The threatening title of the United Kingdom’s 2016 Farmer Review ‘Modernise or Die’ was a stark prognosis for the construction industry likened to a sick or dying patient. The review recommended a shift towards pre- manufacture approaches and away from the traditional methods that we seem so reluctant to divert from. The paper recommends that Design for Manufacture and Assembly (DfMA) is to be explored as the potential medicine required to cure the symptoms of a deteriorating industry.</p> <p>The antidote comes in the form of modular cross laminated timber (CLT). Originally, CLT was associated with in-situ construction techniques, which are reliant on-site operations. The industry has since progressed to a hybrid state of using both in-situ techniques with some pre-fabrication. Modular CLT is the next step in the evolution of mass timber which looks to solve the housing crisis affecting multiple global cities in terms of sustainability, cost and speed.</p> <p>The paper will look at:</p> <ul> <li>The advantages and opportunities for modular CLT</li> <li>The engineering challenges that need to be overcome</li> <li>Digitalisation techniques employed in the design of modular CLT</li> <li>A case study of the Watts Grove project in London, UK</li> </ul>
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Begelman, Mitchell C. "Did Supermassive Black Holes Form by Direct Collapse?" In FIRST STARS III: First Stars II Conference. American Institute of Physics, 2008. http://dx.doi.org/10.1063/1.2905669.

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Reports on the topic "Stark form"

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Niemczyk, Thomas M. Infrared Stark Effect Spectroscopy for Interface Characterization. Fort Belvoir, VA: Defense Technical Information Center, November 2002. http://dx.doi.org/10.21236/ada428899.

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Holcomb, C. T., S. Allen, R. F. Ellis, R. Geer, R. J. Jayakumar, K. Morris, M. A. Makowski, J. M. Moller, and L. Seppala. Motional Stark Effect Diagnostic Expansion for the DIII-D Tokamak. Office of Scientific and Technical Information (OSTI), August 2005. http://dx.doi.org/10.2172/1343023.

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Maglione, R., and A. Durand. RADIUS Extensions for Dual-Stack Lite. RFC Editor, February 2012. http://dx.doi.org/10.17487/rfc6519.

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Floyd, S., M. Allman, A. Jain, and P. Sarolahti. Quick-Start for TCP and IP. RFC Editor, January 2007. http://dx.doi.org/10.17487/rfc4782.

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Joslin, Ann. Guidebook for Start-up Transit Agencies. Tampa, FL: University of South Florida, July 2006. http://dx.doi.org/10.5038/cutr-nctr-rr-2004-11.

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Lee, Y., R. Maglione, C. Williams, C. Jacquenet, and M. Boucadair. Deployment Considerations for Dual-Stack Lite. RFC Editor, March 2013. http://dx.doi.org/10.17487/rfc6908.

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H.K. Park, K.C. Lee, B. Deng, C.W. Domier, M. Johnson, B. Nathan, and Jr and N.C. Luhmann. Application of Stark Tuned Laser for Interferometry and Polarimetry in Plasmas. Office of Scientific and Technical Information (OSTI), September 2001. http://dx.doi.org/10.2172/788226.

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Mansfield, D. K., M. Vocaturo, L. Guttadora, M. Rockmore, K. Micai, and P. A. Krug. A Stark-tuned, far-infrared laser for high frequency plasma diagnostics. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/10131437.

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Mansfield, D. K., M. Vocaturo, L. Guttadora, M. Rockmore, K. Micai, and P. A. Krug. A Stark-tuned, far-infrared laser for high frequency plasma diagnostics. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/5656208.

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Yoshioka, Akira. Path Integral for Star Exponential Functions of Quadratic Forms. GIQ, 2012. http://dx.doi.org/10.7546/giq-4-2003-330-340.

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