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- de Jong, Roelof S., et al.
(författare)
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4MOST-4-metre Multi-Object Spectroscopic Telescope
- 2014
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Ingår i: Ground-based and Airborne Instrumentation for Astronomy V. - : SPIE. - 0277-786X .- 1996-756X. ; 9147
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Konferensbidrag (refereegranskat)abstract
- 4MOST is a wide-field, high-multiplex spectroscopic survey facility under development for the VISTA telescope of the European Southern Observatory (ESO). Its main science drivers are in the fields of galactic archeology, high-energy physics, galaxy evolution and cosmology. 4MOST will in particular provide the spectroscopic complements to the large area surveys coming from space missions like Gaia, eROSITA, Euclid, and PLATO and from ground-based facilities like VISTA, VST, DES, LSST and SKA. The 4MOST baseline concept features a 2.5 degree diameter field-of-view with similar to 2400 fibres in the focal surface that are configured by a fibre positioner based on the tilting spine principle. The fibres feed two types of spectrographs; similar to 1600 fibres go to two spectrographs with resolution R> 5000 (lambda similar to 390-930 nm) and similar to 800 fibres to a spectrograph with R> 18,000 (lambda similar to 392-437 nm & 515-572 nm & 605-675 nm). Both types of spectrographs are fixed-configuration, three-channel spectrographs. 4MOST will have an unique operations concept in which 5 year public surveys from both the consortium and the ESO community will be combined and observed in parallel during each exposure, resulting in more than 25 million spectra of targets spread over a large fraction of the southern sky. The 4MOST Facility Simulator (4FS) was developed to demonstrate the feasibility of this observing concept. 4MOST has been accepted for implementation by ESO with operations expected to start by the end of 2020. This paper provides a top-level overview of the 4MOST facility, while other papers in these proceedings provide more detailed descriptions of the instrument concept[1], the instrument requirements development[2], the systems engineering implementation[3], the instrument model[4], the fibre positioner concepts[5], the fibre feed[6], and the spectrographs[7].
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| 3. |
- Lange, Fredrik, et al.
(författare)
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Omnichannel promotions and their effect on customer satisfaction
- 2021
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Ingår i: European Journal of Marketing. - : Emerald. - 1758-7123 .- 0309-0566. ; 55:13, s. 177-201
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: This paper aims to investigate whether customer satisfaction varies when presented with different types of omnichannel promotions (shopping goal-congruent vs shopping goal-incongruent and monetary vs non-monetary promotions) and if the effect on satisfaction is mediated by service excellence. In addition, this paper examines whether consumers respond differently to these promotions when shopping for utilitarian or hedonic products or when they have an inherent utilitarian or hedonic shopping motivation. Design/methodology/approach: Two online shopping scenario experiments are conducted. Study 1 (n = 1,034) differentiates effects of omnichannel promotions between hedonic and utilitarian product categories. Study 2 (n = 345) contrasts hedonic and utilitarian shopping motivation in the same product category. Findings: The findings in this paper demonstrate positive effects from both presenting a shopping goal congruent and a monetary promotion in an omnichannel setting on customer satisfaction. The positive effects are explained by service excellence and are demonstrated to be attenuated in the hedonic product category and for consumers with a hedonic shopping motivation. Research limitations/implications: The effect of omnichannel promotions was demonstrated using a scenario-based experimental approach, future research should use field experiments. Practical implications: The findings in this paper demonstrate practical implications for a retailer who wishes to optimize its omnichannel promotion strategy across channels and touchpoints. Originality/value: To date there is little directions for retailers on how to optimize their omnichannel promotion strategy. This paper contributes to research and practice by demonstrating that shopping goal-congruent promotions (vs in-congruent) and monetary promotions (vs non-monetary) increase customer satisfaction more in an omnichannel context. The effects are enhanced for utilitarian (vs hedonic) products/shopping motivation. © 2021, Angelica Blom, Fredrik Lange and Ronald L. Hess.
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