448,320 research outputs found
The Chemical Compositions of Variable Field Horizontal-Branch Stars: RR Lyrae Stars
No full textWe present a detailed abundance study of 11 RR Lyrae ab-type variables: AS Vir, BS Aps, CD Vel, DT Hya, RV Oct, TY Gru, UV Oct, V1645 Sgr, WY Ant, XZ Aps, and Z Mic. High-resolution and high signal-to-noise ratio echelle spectra of these variables were obtained with the 2.5 m du Pont telescope at the Las Campanas Observatory. We obtained more than 2300 spectra, roughly 200 spectra per star, distributed more or less uniformly throughout the pulsational cycles. A new method has been developed to obtain the initial effective temperatures of our sample stars at a specific pulsational phase. We find that the abundance ratios are generally consistent with those of similar metallicity field stars in different evolutionary states and throughout the pulsational cycles for RR Lyrae stars. TY Gru remains the only n-capture enriched star among the RRab in our sample. A new relation is found between microturbulence and effective temperature among stars of the horizontal-branch population. In addition, the variation of microturbulence as a function of phase is empirically shown to be similar to the theoretical variation. Finally, we conclude that the derived T-eff and log g values of our sample stars follow the general trend of a single mass evolutionary track.National Science Foundation AST-0908978Astronom
RADIAL VELOCITIES AND PULSATION EPHEMERIDES OF 11 FIELD RR Lyrae STARS
No full textWe present new radial velocities (RVs), improved pulsation periods, and reference epochs of 11 field RR Lyrae ab-type variables: AS Vir, BS Aps, CD Vel, DT Hya, RV Oct, TY Gru, UV Oct, V1645 Sgr, WY Ant, XZ Aps, and Z Mic. This study is based on high-resolution spectra obtained with the echelle spectrograph of the 2.5 m du Pont telescope at Las Campanas Observatory. We obtained similar to 200 spectra per star (i.e., a total of similar to 2300 spectra), distributed more or less uniformly throughout their pulsation cycles. RV curves and photometric light curves phased to our new ephemerides are presented for all program stars. In a subsequent paper, we will use these spectra to derive stellar atmospheric parameters and chemical compositions throughout the pulsational cycles, based purely on spectroscopic constraints.SigmaXiU.S. National Science Foundation AST-0908978Astronom
Chemical Compositions Of Thin-Disk, High-Metallicity Red Horizontal-Branch Field Stars
No full textWe present a detailed abundance analysis and atmospheric parameters of 76 stars from a survey to identify field Galactic red horizontal-branch (RHB) stars. High-resolution echelle spectra (R similar or equal to 60,000, S/N >= 100) were obtained with the 2.7 m Harlan J. Smith Telescope at McDonald Observatory. The target stars were selected only by color and parallax information. Overall metallicities and relative abundances of proton-capture elements (C, N, O, Li), alpha-elements (Ca and Si), and neutron-capture elements (Eu and La) were determined by either equivalent width or synthetic spectrum analyses. We used CN features at the lambda lambda 7995-8040 region in order to determine the C-12/C-13 ratios of our targets. Investigation of the evolutionary stages, using spectroscopic T-eff and log g values along with derived C-12/C-13 ratios, revealed the presence of 18 probable RHB stars in our sample. We also derived kinematics of the stars with available distance information. Taking into account both the kinematics and probable evolutionary stages, we conclude that our sample contains 5 thick-disk and 13 thin-disk RHB stars. Up until now, RHB stars have been considered as members of the thick disk, and were expected to have large space velocities and sub-solar metallicities. However, our sample is dominated by low-velocity solar-metallicity RHB stars; their existence cannot be easily explained with standard stellar evolution.Scientific and Technological Research Council of Turkey (TUBITAK)NASAU.S. National Science Foundation AST 09-08978Rex G. Baker, Jr. endowmentAstronom
BI Marketing Magazine 2012 nr.1
No full textFra publikasjonens nettside:
BI Marketing Magasinet er en populærvitenskapelig presentasjon av utvalgte smakebiter fra Norges ledende markedsforskningsmiljø, Institutt for markedsføring ved Handelshøyskolen BI
BI Marketing Magazine 2011 nr. 2
No full textFra publikasjonens nettside:
BI Marketing Magasinet er en populærvitenskapelig presentasjon av utvalgte smakebiter fra Norges ledende markedsforskningsmiljø, Institutt for markedsføring ved Handelshøyskolen BI
Hvordan få til sirkulær massehåndtering for bygg- og anleggsprosjekter i Oslo-området?
No full textDette forprosjektet har hatt som formål å identifisere interessante aspekter og problemstillinger knyttet til spørsmålet: Hvordan kan man få til sirkulær massehåndtering til og fra bygg- og anleggsprosjekter i Oslo-området? For å svare på spørsmålet, har vi ved Handelshøyskolen BI gjennomført en casestudie av et konsept for massehåndtering på Grønlia i Oslo havn i regi Skanska Industrial Solutions (SIS) i samarbeid med Oslo Havn KF og AF Decom. Konseptet er fortsatt ikke realisert, og ligger til politisk klagebehandling etter avslag i plan- og bygningsetaten i Oslo kommune, men caset representerer et interessant eksempel på hva som skal til for å utvikle og implementere sirkulære løsninger for massehåndtering. I tillegg til Grønlia-konseptet, er det flere andre pågående initiativer som er satt i gang i løpet av de siste årene med tanke på å håndtere utfordringen med masser i Oslo-området. Dette vitner om at problemstillingen har blitt satt på agendaen, både på politisk- og næringsnivå samt blant ulike interessegrupper. Grønlia-caset må dermed sees på som en del av et større økosystem for massehåndtering i Oslo og omegn.publishedVersionpublishedVersionpublishedVersio
Qing Zhuang: 2024 Irma Black Award Silver Medal Acceptance Speech
No full textAuthor Qing Zhuang gives an acceptance speech for Rainbow Shopping (Holiday House)https://educate.bankstreet.edu/irma_black_awards/1012/thumbnail.jp
Eminent Chinese of the Qing Period 1644-1911/2
No full textEminent Chinese of the Qing Period (1644-1911/2) is a revised edition of the 1943 standard reference work edited by Arthur Hummel, including more than 800 Qing dynasty individuals, converted to pinyin and updated for modern users.Cover -- Title Page -- Copyright -- Table of Contents -- Introduction -- Preface -- Editor's Note -- About the 2018 Edition -- Biographies A-Z -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- U -- W -- X -- Y -- Z -- Contributors -- A Note on Quan Zuwang, Zhao Yiqing and Dai Zhen by Hu Shih -- Thirty-three Collections of Qing Dynasty Biographies -- List of Qing Emperors -- Bibliography -- Pinyin / Wade-Giles Conversion Table -- Names in Chronological Order -- Index of Names -- Index of Subjects -- Index of BooksEminent Chinese of the Qing Period (1644-1911/2) is a revised edition of the 1943 standard reference work edited by Arthur Hummel, including more than 800 Qing dynasty individuals, converted to pinyin and updated for modern users.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Does a master’s degree at BI generate added value for a bachelor’s graduate?
No full textMasteroppgave(MSc) in Master of Science in Business, Finance - Handelshøyskolen BI, 2021The aim of our master thesis is to investigate whether taking a master’s degree at
BI Norwegian Business School generates added value in terms of lifetime salary
earnings for a bachelor graduate. In addition, we plan to interpret and examine the
main contributing factors that give the student the added value from attending the
master’s degree at BI.
By performing an empirical study and creating our own tailor-made NPV model
that is well-suited to a BI student, we found out that attending a master’s degree
contributes to an added value by generating a positive NPV of NOK 3.5 million.
We also analyze the importance of the key variables contributing to the added
value by formulating a regression model to study the impact of different factors
on educational returns (i.e. salary). Consequently, we found out that ‘Master
program’, ‘Age’, ‘Male’, ‘Grade’, ‘EFCAB’ and ‘TESLO’ are the most
significant variables that explain the added value to the starting salary of BI
graduates.
Simultaneously, we acknowledge that there is a concern of endogeneity in our
analyses and that this could lead to a bias in our results, meaning that the key
dependent variable ‘salary’ and the independent variable “Master program” could
be influenced by other unobservable endogenous variables such as human capital.
This could impact not only the student’s decision whether he/she should attend a
master’s program, but also impact his/her starting salary at a later stage. Despite
this concern, we believe our findings and results give valuable insights into the
valuation of a master’s degree.
In conclusion, our thesis suggests that pursuing a master’s degree at BI is a
profitable and worthy long-term investment for students and therefore, we
recommend that bachelor students should invest their time and effort in a 2-year
master’s program for lifetime value creation
New Qing History: Disputes, Dialogues, and Influence
No full textThis article studies the New Qing History approach that arose in the US in the 1980s and the ensuing responses to it, and how these responses can be understood in the context of American China studies, twentieth-century historiographical trends, and Chinese nationalism. It argues that the New Qing History approach should be considered in a contextualized and de-politicized way. After examining how Chinese-born scholars responded to the controversial issues (sinicization, the
nature of the Qing dynasty/Empire, and the definition of China/Zhongguo) pro-voked by New Qing History, the article suggests that sinicization should no longer be used as an uncontestable interpretative framework for studies of Chinese history. Instead, it favors a historicized conceptualization of China empha-sizing its open, inclusive, and integrative character, as well as the uniqueness of Qing China’s expansion. The article also demonstrates the New Qing History approach’s positive influences in diversifying primary sources and its contribution in promoting borderland and non-Han studies.Published articl
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