Auflistung nach Autor:in "Spiekermann, Sarah"
1 - 8 von 8
Treffer pro Seite
Sortieroptionen
- ZeitschriftenartikelCall-for-papers(Wirtschaftsinformatik: Vol. 47, No. 6, 2005) Müller, Günter; Sackmann, Stefan; Günther, Oliver; Spiekermann, Sarah
- ZeitschriftenartikelLife Engineering(Business & Information Systems Engineering: Vol. 63, No. 2, 2021) Alt, Rainer; Göldi, Andreas; Österle, Hubert; Portmann, Edy; Spiekermann, Sarah
- ZeitschriftenartikelPersonalisierung und informationelle Selbstbestimmung Ein unauflösbarer Widerspruch?(Wirtschaftsinformatik: Vol. 49, No. 1, 2007) Müller, Günter; Sackmann, Stefan; Günther, Oliver; Spiekermann, Sarah
- ZeitschriftenartikelReverse procurement and auctions for consumers(Wirtschaftsinformatik: Vol. 48, No. 1, 2006) Klafft, Michael; Spiekermann, SarahExecutive SummaryWeb-based bid invitation platforms and reverse auctions are increasingly used by consumers for the procurement of goods and services. An empirical examination shows that with B-2-C these procurement methods generate considerable benefits for the consumer:⊎ Reverse auctions and bid invitation platforms generate high consumer surplus in the procurement of general and crafts services.⊎ The level of this consumer surplus is affected by the number of bidders. The duration of the auction and the starting price are less important.⊎ In the painting business prices are considerably lower than with traditional procurement channels.⊎ On bid invitation platforms, in most cases (> 55%) the bids with the lowest price are chosen.AbstractWeb-based reverse auctions and bid invitation platforms have been used successfully for the procurement of goods and services in B-2-B and B-2-G contexts for some time. More recently, such procurement tools have become available to consumers and are increasingly gaining in popularity. An empirical examination of more than 1400 bid invitations and over 1100 reverse auctions shows that these two types of platforms generate noteworthy consumer surpluses, with the number of bidders being by far the most relevant factor in the determination of surplus levels. Contrary to traditional auction environments like eBay, auction duration and starting prices turn out to be of little relevance for consumer surpluses, as correlation and regression analyses show. The analysis of procurement data further reveals that consumer-driven platforms are particularly suitable for purchases of crafts and services where they provide an efficient mechanism to bring together buyers and sellers and match supply and demand. An exemplary review of results from painting auctions indicates that the price level achieved by consumers in reverse e-procurement is below reference prices which can be obtained in traditional procurement channels. Being an attractive alternative, reverse e-procurement platforms could bring about a paradigm shift towards buyer-centred e-purchasing.
- ZeitschriftenartikelRFID: Verbraucherängste und verbraucherschutz(Wirtschaftsinformatik: Vol. 47, No. 6, 2005) Berthold, Oliver; Günther, Oliver; Spiekermann, SarahRFID introduction is a hotly debated public policy issue. The technology enables physical environments to become more interactive and supportive by tagging each item with a chip that wirelessly communicates with a service-enriched backend infrastructure. Based on a number of user studies at Humboldt-Universität and at the Auto-ID Center, this article presents the major fears associated with RFID introduction. We show to what extent these fears are justified and derive a number of system requirements for giving users more control over an RFID-enabled IT infrastructure. After presenting several recent technical proposals for privacy protection, we focus on the question of controlled access to RFID tags. We conclude with a proposal for an easy-to-use private password model.
- ZeitschriftenartikelTechnology for Humanity(Business & Information Systems Engineering: Vol. 65, No. 5, 2023) Meythaler, Antonia; Baumann, Annika; Krasnova, Hanna; Hinz, Oliver; Spiekermann, Sarah
- ZeitschriftenartikelValue-based Engineering: Prinzipien und Motivation für bessere IT-Systeme(Informatik Spektrum: Vol. 44, No. 4, 2021) Spiekermann, SarahDigitale Ethik wird derzeit weltweit als eine Notwendigkeit diskutiert, um verlässlichere IT-Systeme zu schaffen. Diese Diskussion, geschürt durch die Angst vor einer unkontrollierbaren generellen Künstlichen Intelligenz (KI) und angeheizt von ethischen Dilemmata bestehender Systeme, hat viele Institutionen und Wissenschaftler dazu bewegt, Werteprinzipien einzufordern, an denen sich die Entwicklung komplexer Systeme zukünftig orientieren sollte. Diese inkludieren i. d. R. die Forderung nach Privatsphäre, Sicherheit, Transparenz, Fairness etc. In diesem Artikel wird dargestellt, warum das Abarbeiten von Wertelisten für eine gute bzw. ethisch legitimierte Systementwicklung unzureichend ist. Es wird gezeigt, wie stattdessen ein wirklich ethisches „Value-based Engineering“ aussehen müsste, damit technische Produktinnovationen insgesamt auf bessere (ethischere) Füße gestellt werden. Value-based Engineering (VbE) ist eine prozessgetriebene, ganzheitliche Herangehensweise an die Systementwicklung, die zunächst aus den Ideen des Value Sensitive Designs und dem Ethical Computing schöpfte. Ab 2016 wurde VbE im IEEE 7000 Standard weiter konkretisiert. 10 Prinzipien für ethisch angeleitete Systeminnovation fassen wesentliche Handlungsanforderungen für Unternehmen zusammen.
- ZeitschriftenartikelValues and Ethics in Information Systems(Business & Information Systems Engineering: Vol. 64, No. 2, 2022) Spiekermann, Sarah; Krasnova, Hanna; Hinz, Oliver; Baumann, Annika; Benlian, Alexander; Gimpel, Henner; Heimbach, Irina; Köster, Antonia; Maedche, Alexander; Niehaves, Björn; Risius, Marten; Trenz, Manuel