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See detailValidity of the interaction model of anger: Studies in management and competitive sport
Steffgen, Georges UL; Schwenkmezger, Peter

in German Journal of Psychology (1991)

Detailed reference viewed: 64 (4 UL)
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See detailValidity of the MicroDYN approach: Complex problem solving predicts school grades beyond working memory capacity
Schweizer, Fabian; Wüstenberg, Sascha UL; Greiff, Samuel UL

in Learning and Individual Differences (2013), 24

This study examines the validity of the complex problemsolving (CPS) test MicroDYN by investigating a) the relation between its dimensions – rule identification (exploration strategy), rule knowledge ... [more ▼]

This study examines the validity of the complex problemsolving (CPS) test MicroDYN by investigating a) the relation between its dimensions – rule identification (exploration strategy), rule knowledge (acquired knowledge), rule application (control performance) – and working memory capacity (WMC), and b) whether CPS predicts school grades in different domains beyond WMC. A sample of n=393 German high school students (age M=17.07, SD=1.12) completed the computer-based tests Memory Updating Numerical and the CPS scenario MicroDYN. Using structural equation modeling, WMC predicted rule knowledge and rule application, which remained substantially correlated after controlling forWMC. Rule knowledge predicted school grades in science and social studies beyondWMC, but not in language subjects. Explanations for the differential concurrent validity of CPS as well as prerequisites for valid CPS assessment are discussed. [less ▲]

Detailed reference viewed: 364 (183 UL)
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See detailValidly authentic. Some recommendations to researchers using simulations in psychological assessment. European
Stadler, Matthias UL; Iliescu, Dragos; Greiff, Samuel UL

in European Journal of Psychological Assessment (2021), (37), 419-422

Detailed reference viewed: 18 (0 UL)
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See detailValorization of talents' work: A qualitative study on talent management
Usanova, Ksenia UL

Scientific Conference (2020, October 05)

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See detailValproic acid perturbs hematopoietic homeostasis by inhibition of erythroid differentiation and activation of the myelo-monocytic pathway
Chateauvieux, Sebastien; Eifes, Serge UL; Morceau, Franck et al

in Biochemical Pharmacology (2011), 81(4), 498-509

As a histone deacetylase inhibitor, valproic acid (VPA) is a candidate for anticancer therapy. Besides, VPA exhibits various mechanisms of action and its effects on the molecular basis of hematopoiesis ... [more ▼]

As a histone deacetylase inhibitor, valproic acid (VPA) is a candidate for anticancer therapy. Besides, VPA exhibits various mechanisms of action and its effects on the molecular basis of hematopoiesis remain unclear. To study the effects of VPA on the hematopoietic system, we performed microarray analysis using K562 cells treated with 1mM VPA over a 72h time course. The association between gene ontology (GO) terms and the lists of differentially expressed genes was tested using the Bioconductor package GOstats. Enrichment analysis for cellular differentiation pathways was performed based on manually curated gene lists. Results from microarray analysis were confirmed by studying cell differentiation features at the molecular and cellular levels using other hematopoietic cell lines as well as hematopoietic stem/progenitor CD34(+) cells. Microarray analysis revealed 3440 modulated genes in the presence of VPA. Genes involved in the granulo-monocytic differentiation pathway were up-regulated while genes of the erythroid pathway were down-regulated. This was confirmed by analyzing erythrocytic and myeloid membrane markers and lineage-related gene expression in HEL, MEG01, HL60 as well as CD34(+) cells. Moreover, GATA-1 and its co-factors (FOG1, SP1) were down-regulated, while myelopoiesis activator PU.1 was up-regulated, in agreement with an inhibition of erythropoiesis. Our functional profiling and cell phenotyping approach demonstrates that VPA is able to alter hematopoietic homeostasis by modifying the cell population balance in the myeloid compartment. This may lead to a potential failure of erythropoiesis in patients with cancer or chronic inflammatory diseases having a well-described propensity to anemia. [less ▲]

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See detailValuation of Manual and Automated Process Redesign from a Business Perspective
Krause, Felix; Bewernik, Marc-Andre; Fridgen, Gilbert UL

in Business Process Management Journal (2013), 19(1), 95--110

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See detailValue at Risk, Outliers and Chaotic Dynamics
Kyrtsou, catherine; Terraza, Virginie UL

in COSTANTINO, M.; LARRAN, M. (Eds.) Computational Finance and its Applications III (2008)

Financial returns series typically exhibit excess kurtosis and volatility clustering. GARCH models are often applied to describe these two stylised facts. Nevertheless, applications of these processes to ... [more ▼]

Financial returns series typically exhibit excess kurtosis and volatility clustering. GARCH models are often applied to describe these two stylised facts. Nevertheless, applications of these processes to stock returns have shown that they cannot capture all excess kurtosis, high Jarque-Bera and inherent non-linearity. The aim of this work is to suggest a new non-linear framework for the calculation of the Value-at-Risk. As it has been demonstrated in Kyrtsou and Terraza V. (2004) the use of a mixed non-linear model in the estimation of VaR can improve the obtained results. In this paper we apply the traditional VaR-GARCH and the VaR-Mackey-Glass-GARCH models both to the initial and the filtered Nikkei returns series without outliers. [less ▲]

Detailed reference viewed: 127 (1 UL)
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See detailValue Creation and Income Taxation: A Coherent Framework for Reform?
Haslehner, Werner UL

in Haslehner, Werner; Lamensch, Marie (Eds.) Taxation and Value Creation (2021)

Digitalization of the global economy has forced a rethink of the allocation of taxing rights along the lines of “value creation”. The current international tax system relies on a vast network of double ... [more ▼]

Digitalization of the global economy has forced a rethink of the allocation of taxing rights along the lines of “value creation”. The current international tax system relies on a vast network of double taxation conventions (DTCs) intended to allocate taxing rights between states and avoid double taxation. However, the system’s logic is rooted in the early 20th century and not fit- ting the modern global economy – particularly in so far as it presupposes a threshold physical presence in form of a “permanent establishment” (PE) to permit taxation in the state of source. Today, the traditional thresholds for giving taxing rights to “states of source” hardly reflect the reality of business activity that strongly relies on intangible assets and the provision of remote services, which are not easy to pin down at any particular place. Calls for fundamental changes crystalized in the OECD and G20 initiated BEPS Project launched in 2013 to reform the international tax system with one overall objective: To “ensure that profits are taxed where economic activities take place and value is created.” Yet despite virtual unanimity on that objective, and great number of measures already taken purportedly contributing to it, there is no clarity on its actual meaning. This contribution seeks to shed light on a potential meaning of "value creation" as it relates to (international) income taxation, employing a cross-disciplinary perspective. [less ▲]

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See detailThe value of Chinese patents: An empirical investigation of citation lags
Fisch, Christian UL; Sandner, Philipp; Regner, Lukas

in China Economic Review (2017), 45

China has been experiencing a substantial growth in patent applications. But is this increase accompanied by a similar increase in patent value? To assess this question, we examine the citation lag of ... [more ▼]

China has been experiencing a substantial growth in patent applications. But is this increase accompanied by a similar increase in patent value? To assess this question, we examine the citation lag of Chinese patents as a proxy of patent value in comparison with patents from the US, Europe, Japan, and Korea. Our empirical analysis comprises a unique data set of 60,000 patents with priority years between 2000 and 2010. Utilizing Cox regressions, our results show that Chinese patents suffer from a large citation lag in comparison to international patents, indicating a lower value. This is especially true for patents filed domestically. However, we find empirical support for an increasing patent value in more recent patents. China shows a strong dynamic in the field of patenting and our results suggest that the gap between Chinese patents and international patents might narrow down in the near future. [less ▲]

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See detailThe Value of Coordination in Multimarket Bidding of Grid Energy Storage
Löhndorf, Nils UL; Wozabal, David

in Operations Research (2021)

Detailed reference viewed: 123 (23 UL)
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See detailThe Value of Disclosing IPR to Open Standard Setting Organizations
Hussinger, Katrin UL; Schwiebacher, Franz

in Industry and Innovation (2015)

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See detailThe value of education among immigrants and non-immigrants and how this translates into educational aspirations: a comparison of four European countries
Hadjar, Andreas UL; Scharf, Jan UL

in Journal of Ethnic and Migration Studies (2019), 45(5), 711-734

Starting out from the frequent empirical finding that immigrants exhibit higher educational aspirations than non-immigrants, we analyse the role of immigrants’ value of education, i.e. the subjective ... [more ▼]

Starting out from the frequent empirical finding that immigrants exhibit higher educational aspirations than non-immigrants, we analyse the role of immigrants’ value of education, i.e. the subjective belief that education is beneficial for one’s life, in idealistic and realistic educational aspirations in four distinct institutional settings, comparing Sweden, Germany, the Netherlands and England. While the first part of the analyses relates to how immigrants differ from non-immigrants in the value they assign to education, the second part centres on country differences considering immigrant integration policies and education systems as crucial factors. A third part relates to the links between the value of education and educational aspirations to gain some insight into how the value of education may contribute to educational decisions. Analyses are based on longitudinal data of the Children of Immigrants Longitudinal Survey in Four European Countries (CILS4EU). While results show that immigrants assign a higher value to education, the value of education does play a minor role in idealistic and realistic educational aspirations. The results of the country comparison are rather ambivalent, including very weak support for the argument that immigrants strive for education to a higher extent in countries with less favourable conditions. [less ▲]

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See detailThe value of installed base information for spare part inventory control
van der Auweraer, Sarah UL; Zhu, Sha; Boute, Robert

in International Journal of Production Economics (2021)

This paper analyzes the value of different sources of installed base information for spare part demand forecasting and inventory control. The installed base is defined as the set of products (or machines ... [more ▼]

This paper analyzes the value of different sources of installed base information for spare part demand forecasting and inventory control. The installed base is defined as the set of products (or machines) in use where the part is installed. Information on the number of products still in use, the age of the products, the age of their parts, as well as the part reliability may indicate when a part will fail and trigger a demand for a new spare part. The current literature is unclear which of this installed base information adds most value – and should thus be collected – for inventory control purposes. For this reason, we evaluate the inventory performance of eight methods that include different sets of installed base information in their demand forecasts. Using a comparative simulation study we identify that knowing the size of the active installed base is most valuable, especially when the installed base changes over time. We also find that when a failure-based prediction model is used, it is important to work with the part age itself, rather than the machine age. When one is not able to collect information on the part age, a logistic regression on the machine age might be a valuable alternative to a failure-based prediction model. Our findings may support the prioritization of data collection for spare part demand forecasting and inventory control. [less ▲]

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See detailThe value of librarians for clinical and health governance (a view from Europe)
Ibragimova, Irina; Korjonen, Maria Helena UL

in International Journal of Health Governance (2019), 24(1), 66--88

Purpose Governance of healthcare organisations and health systems requires many different competencies, with a great emphasis on evidence and information governance, which are traditional fields of...

Detailed reference viewed: 64 (1 UL)
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See detailThe value of the liminal position
Valsiner, Jaan UL

in Dost-Gözkan, Ayfer; Sonmez Keith, Doga (Eds.) Norms, groups, conflict and social change: Rediscovering Muzafer Sherif’s psychology (2015)

Detailed reference viewed: 40 (0 UL)
See detailValue orientations and solidarity in intergenerational family relations
Albert, Isabelle UL; Michels, Tom; Ferring, Dieter UL

in Invited talk at the Colloquia Psychologica, Sminatio internazionale. Athenaeum Center for Family Studies and Research – Catholic University of Milan, Milan, Italy. (2008)

Detailed reference viewed: 41 (0 UL)
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See detailThe value relevance of SAM’s corporate sustainability ranking and GRI sustainability reportingin the European stock markets
Kaspereit, Thomas UL; Lopatta, Kerstin UL

in Business Ethics : A European Review (2016), 25(1), 1-24

This paper investigates whether relative corporate sustainability as measured by the SAM sustainability ranking and sustainability reporting in terms of Global Reporting Initiative (GRI) application ... [more ▼]

This paper investigates whether relative corporate sustainability as measured by the SAM sustainability ranking and sustainability reporting in terms of Global Reporting Initiative (GRI) application levels are associated with a higher market valuation. We conduct a value relevance study for the 600 largest European companies with the Feltham and Ohlson valuation model as a reference point. Our results indicate that for the observation period 2001 to 2011, the association between corporate sustainability and market value is positive. The empirical evidence of a positive relationship between GRI reporting and market value is statistically significant in some but not all of the model specifications. We find no evidence of interaction between the value relevance of corporate sustainability and sustainability reporting, nor do we find any positive effect of external assurance on the capital market perception of GRI application levels. Our results support the notion that conducting business in accordance with ethical norms is also a shareholder valueincreasing business strategy. However, it is not possible to verify the information given in sustainability reports through external assurance. [less ▲]

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See detailValue Stream Management in high variability production systems
Oberhausen, Christof UL; Weber, Daniel; Plapper, Peter UL

in SSRG International Journal of Industrial Engineering (2015), 2(1), 4

Increasing customer requirements and high pressure from global competition are forcing companies to a holistic optimization of their business and production processes. To ensure the competiveness of ... [more ▼]

Increasing customer requirements and high pressure from global competition are forcing companies to a holistic optimization of their business and production processes. To ensure the competiveness of enterprises in future, it is necessary to introduce a process-oriented view instead of a departmental thinking. This paper describes the application of Value Stream Management by the University of Luxembourg in collaboration with the industrial partner Rotarex S.A., a provider of gas control solutions headquartered in Luxembourg. With the help of Value Stream Analysis and Design, relevant material and information flows are captured, analyzed and finally optimized. [less ▲]

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See detailValue Stream Management in the "Lean Manufacturing Laboratory"
Oberhausen, Christof UL; Plapper, Peter UL

in Procedia CIRP (2015, July), 32

The University of Luxembourg has recently launched its learning factory, the “Lean Manufacturing Laboratory”. With the help of this manual assembly line, students gain valuable insights in the operation ... [more ▼]

The University of Luxembourg has recently launched its learning factory, the “Lean Manufacturing Laboratory”. With the help of this manual assembly line, students gain valuable insights in the operation of a manufacturing line as well as in buffer, waste and congestion management. Currently, one of the main research topics at the University of Luxembourg in the field of Lean Management is the further development of the method Value Stream Management (VSM). The application of VSM in the “Lean Manufacturing Laboratory” with a projected focus on industry and service sectors reveals the need for a standardized VSM approach. Thus, one of the research objectives is the development of a common VSM method accompanied by standardized software and process interfaces to ensure robust product and information flows within a company and also throughout supply chains. On the way towards a VSM method as standard, existing VSM approaches have to be investigated and validated. By a detailed comparison of existing VSM approaches, all necessary fields of action for the development of a standardized Value Stream Management approach are shown. [less ▲]

Detailed reference viewed: 203 (12 UL)