Closed Access
Refine
Year of publication
Document type
- Article (peer-reviewed) (526)
- Conference Proceeding (277)
- Part of a Book (175)
- Bachelor Thesis (126)
- Book (67)
- Contribution to a Periodical (64)
- Master's Thesis (13)
- Academic Papers (4)
- Doctoral Thesis (2)
- Other (1)
Keywords
- Electrical impedance tomography (20)
- Mechanical ventilation (16)
- Corona (12)
- Parameter identification (12)
- Cloud computing (11)
- Porous silicon (10)
- E-Learning (9)
- Security (9)
- Surface roughness (9)
- Sustainability (9)
Course of studies
- IBW - Internationale Betriebswirtschaft (61)
- IBM - International Business Management (45)
- BMP - Business Management and Psychology (19)
- IMM - International Management (10)
- AIN - Allgemeine Informatik (2)
- MBA - International Business Management (2)
- IRCD - International Relations and Cultural Diplomacy (1)
- OMB - OnlineMedien (1)
A deep learning spatial-temporal framework for detecting surgical tools in laparoscopic videos
(2021)
Can the different framing of price promotions decrease consumer value perception and their willingness to pay? Prior research provides evidence of differences in consumer perception of economically equivalent monetary and non-monetary price promotions. In detail, many research works suggest that non-monetary promotions positively affect consumer perception and are therefore preferred over monetary ones that are associated with a drop in quality. Results suggest that this biased consumer behavior is caused by the framing of the promotion, causing difference in cognitive processing and dissimilarities in perception of benefits and product quality. We put this theoretical foundation to the test on the Turkish consumer market of non-durable goods, in order to contrast effects on consumers of the economically equivalent formats ‘50% discount’ as a monetary and ‘buy-one-get-one-free’ as a non-monetary promotion. In particular, the focus was set on analyzing attractiveness perception of the two promotion types and the development of WTP pre- and post-promotion. To achieve this, the non-durable goods rice and antibacterial soap were selected as product stimuli to stage scenarios before, during and after a promotion period. Four sets of questionnaires were shared on social media and distributed to a total of 919 participants via randomization generator. The survey results put forward empirical validation of product-related decrease in value perception as a consequence of both promotion types, namely the ‘promotional effect’. Nevertheless, our data provide no evidence for the ‘framing effect’ in neither attractiveness perception nor post-promotional WTP. This paper aims to bridge the gap on empirical research of key theoretical implications of promotional impact on consumer behavior and to benefit domestic and foreign marketing managers conducting business operations on the Turkish market.
On Consistency Viability and Admissibility in Constrained Ensemble and Hierarchical Control Systems
(2023)
Several control architectures, such as decentralized, distributed, and hierarchical control, have been elaborated over the past decades for controlling systems composed of a set of subsystems. However, computational complexity and constraint satisfaction are still challenging tasks. We present an approach to control an ensemble of similar heterogeneous systems with input and state constraints via an identical control input. This control input is globally admissible and computed based on an aggregated system that reflects the overall behavior of the ensemble. To limit the computational complexity of the control task, the aggregated system is designed such that its dimension is independent of the number of subsystems. To guarantee viability, i.e., state constraint satisfaction for all times, appropriate consistency conditions are derived based on invariant set theory. The presented approach is illustrated with a numerical example.
This paper analyses five different Cryptocurrencies, namely Bitcoin, Ethereum, XRP, Dogecoin and Litecoin, and studies their impact on traditional financial portfolios under different allocation strategies. The allocation strategies under consideration in this paper are the modern portfolio theory according to Markowitz, an extension of it such as the tangency portfolio, and the equally weighted portfolio. Further, this study explores the effect on the efficient frontier when Cryptocurrencies are added to the efficient portfolios. In addition to that, the paper aims to examine whether the mean – variance portfolio optimization according to Markowitz outperforms the naïve and tangency portfolio strategy. The portfolio performance is evaluated based on the Sharpe ratio. The quantitative analysis of this paper covers the time period from 2017 to 2022, in total five years. In accordance with the existing literature on portfolio optimization with Cryptocurrencies, the study reveals that besides some issues related with Cryptocurrencies such as cybercrime and a lack of regulations, Cryptocurrencies can be beneficial for portfolio diversification with traditional financial assets. Referring to the portfolio strategies, the study highlights that the optimal mean – variance portfolio and tangency portfolio do not differ significantly in terms of Sharpe ratio. However, both strategies outperform equally weighted portfolios.
Effiziente Erosion von superabrasiven Werkzeugen : Schwerpunkt auf Schleif- und Abrichtwerkzeugen
(2024)
Optimizing the grinding process through reduction of the loading of grinding tool by infiltration
(2015)
Vollautomatisiert umformen
(2015)