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2004 veröffentlichten Mark Zuckerberg und seine Mitbegründer Dustin Moskovitz, Chris Hughes und Eduardo Saverin "The Facebook" von ihrem Harvard-Wohnheimzimmer aus. In nur einem Jahr konnte Facebook seine Nutzerzahl auf eine Million steigern. Im Juli 2010 knackte das soziale Netzwerk bereits die 500-Millionen-Grenze.
Putting actions in context: visual action adaptation aftereffects are modulated by social contexts
(2014)
The social context in which an action is embedded provides important information for the interpretation of an action. Is this social context integrated during the visual recognition of an action? We used a behavioural visual adaptation paradigm to address this question and measured participants’ perceptual bias of a test action after they were adapted to one of two adaptors (adaptation after-effect). The action adaptation after effect was measured for the same set of adaptors in two different social contexts. Our results indicate that the size of the adaptation effect varied with social context (social context modulation) although the physical appearance of the adaptors remained unchanged. Three additional experiments provided evidence that the observed social context modulation of the adaptation effect are owed to the adaptation of visual action recognition processes. We found that adaptation is critical for the social context modulation (experiment 2). Moreover, the effect is not mediated by emotional content of the action alone (experiment 3) and visual information about the action seems to be critical for the emergence of action adaptation effects (experiment 4). Taken together these results suggest that processes underlying visual action recognition are sensitive to the social context of an action.
The purpose of this study is to evaluate online German fashion shopping websites from a customer perspective, based on a two-dimensional conceptual framework covering
shopping experience and shopping quality. As the research methodology, an exploratory mystery shopping approach was used in order to compare online shops. The results were as follows. First, four categories of online shops were identified: heroes, marketing winners, process winners, and underperformers. Second, three main levers for improvement were elaborated: emotionality of websites, reducing complexity, and the introduction of an industry standard of payments. From These results, it is possible to analyze and benchmark websites and to adapt online Marketing decisions as well as general management strategies for online fashion Shopping companies. The study has originality and value as it is the first time that an Evaluation of websites has combined the consumer´s perspective before the purchase and its fulfillment (e.g. delivery) after the online purchase.
When forecasting sales figures, not only the sales history but also the future price of a product will influence the sales quantity. At first sight, multivariate time series seem to be the appropriate model for this task. Nonetheless, in real life history is not always repeatable, i.e., in the case of sales history there is only one price for a product at a given time. This complicates the design of a multivariate time series. However, for some seasonal or perishable products the price is rather a function of the expiration date than of the sales history. This additional information can help to design a more accurate and causal time series model. The proposed solution uses an univariate time series model but takes the price of a product as a parameter that influences systematically the prediction based on a calculated periodicity. The price influence is computed based on historical sales data using correlation analysis and adjustable price ranges to identify products with comparable history. The periodicity is calculated based on a novel approach that is based on data folding and Pearson Correlation. Compared to other techniques this approach is easy to compute and allows to preset the price parameter for predictions and simulations. Tests with data from the Data Mining Cup 2012 as well as artificial data demonstrate better results than established sophisticated time series methods.
"Learning by doing" in Higher Education in technical disciplines is mostly realized by hands-on labs. It challenges the exploratory aptitude and curiosity of a person. But, exploratory learning is hindered by technical situations that are not easy to establish and to verify. Technical skills are, however, mandatory for employees in this area. On the other side, theoretical concepts are often compromised by commercial products. The challenge is to contrast and reconcile theory with practice. Another challenge is to implement a self-assessment and grading scheme that keeps up with the scalability of e-learning courses. In addition, it should allow the use of different commercial products in the labs and still grade the assignment results automatically in a uniform way. In two European Union funded projects we designed, implemented, and evaluated a unique e-learning reference model, which realizes a modularized teaching concept that provides easily reproducible virtual hands-on labs. The novelty of the approach is to use software products of industrial relevance to compare with theory and to contrast different implementations. In a sample case study, we demonstrate the automated assessment for the creative database modeling and design task. Pilot applications in several European countries demonstrated that the participants gained highly sustainable competences that improved their attractiveness for employment.
Nach Charles Darwin bestimmt die Kompetenz im Bereich Veränderungsmanagement zunehmend die Wettbewerbsfähigkeit von Organisationen: »It's not the strongest of the species that survives, nor the most intelligent. It is the one most adaptable to change.« Diese Sichtweise gewinnt auf Basis der mit Social Media verbundenen Veränderung der Unternehmensumwelt weiter an Bedeutung. Social Media eröffnet neue Freiheitsgrade in der unternehmensinternen aber auch gesellschaftlichen Kommunikation, die unumkehrbar und in einer rasanten Geschwindigkeit Unternehmen mit sich selbst konfrontieren. Wissenschaftliche Untersuchungen legen nahe, dass die meisten Unternehmen die Bedeutung ihrer eigenen Veränderungskompetenz noch nicht vollständig erfasst haben. Der Umgang mit Wandel ist in vielen Fällen naiv und folgt tradierten Organisationsmodellen. Unternehmen lassen sich jedoch nicht mechanisch im Stile einer Maschine verändern. Daher sind Ansätze gefragt, die den Fokus eher auf kulturelle und mikropolitische Faktoren lenken, prozessorientiert vorgehen und Social Media schrittweise in das eigene Geschäftsmodell integrieren. Der wichtigste Faktor ist und bleibt jedoch die Qualität der Führung. Das Top Management und final die Shareholder von Unternehmen müssen sich daher erneut überlegen, ob sie speziell in dieser Hinsicht optimal aufgestellt sind.
Der Kundenservice bietet für das Marketing umfangreiche Ansätze zur Differenzierung. Dabei zahlen positive Serviceerlebnisse der Kunden auf unterschiedliche Marketingziele ein. Durch Social Media stehen darüber hinaus neue Möglichkeiten für den Servicedialog zur Verfügung. Der vorliegende Beitrag beschreibt die Umsetzung dieser Möglichkeiten bei der Telekom Deutschland GmbH.
Alle DAX30-Unternehmen kommunizieren ihre Kapitalkosten, ausgelöst einerseits aus IFRS-Vorgaben, andererseits, weil sie ihre wertorientierte Performancemessung und -steuerung belegen wollen. Bei der Berechnung der Kapitalkosten verwenden die Unternehmen i. d. R. den WACC-Ansatz. Die Tiefe der Angaben variiert von der bloßen Bekanntgabe eines Prozentsatzes bis hin zur vollständigen Offenlegung aller Inputfaktoren für deren Berechnung. Die Autoren argumentieren, dass die Transparenz der Kapitalkosten jedoch wenig Mehrwert schafft, da die in die Berechnung einfließenden Parameter wie z. B. risikoloser Zins, Marktrendite oder unternehmensindividuelles Beta stark schwanken bzw. nahezu willkürlich ermittelt werden. Die von den DAX30 Konzernen zurzeit praktizierte Form der Transparenz schafft für die Adressaten der Geschäftsberichte daher nur einen geringen Erkenntnisgewinn.
Der eine Eingliederungsvereinbarung ersetzende Verwaltungsakt ist rechtswidrig, wenn die gesetzlich vorgesehene Geltungsdauer ohne Ermessenserwägungen überschritten wird.
Werttreiber Lean Production
(2013)
Steigern Unternehmen, die Lean-Production-Methoden einsetzten, ihren Unternehmenswert, und wenn ja, wie sehr? Das Autorenteam der Hochschule Reutlingen hat das Zusammenspiel der Managementkonzepte Working Capital Management und Wertorientierung untersucht und stellt die ermutigenden Ergebnisse anhand je eines Szenarios für ein Großunternehmen und ein KMU vor.
Redirected walking techniques allow people to walk in a larger virtual space than the physical extents of the laboratory. We describe two experiments conducted to investigate human sensitivity to walking on a curved path and to validate a new redirected walking technique. In a psychophysical experiment, we found that sensitivity to walking on a curved path was significantly lower for slower walking speeds (radius of 10 meters versus 22 meters). In an applied study, we investigated the influence of a velocity-dependent dynamic gain controller and an avatar controller on the average distance that participants were able to freely walk before needing to be reoriented. The mean walked distance was significantly greater in the dynamic gain controller condition, as compared to the static controller (22 meters versus 15 meters). Our results demonstrate that perceptually motivated dynamic redirected walking techniques, in combination with reorientation techniques, allow for unaided exploration of a large virtual city model.