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See detailThe validity of predictors of academic and vocational-training achievement: A review of the literature.
Klapproth, Florian UL; Schaltz, Paule UL

in Krolak, Sabine; Glock, Sabine; Böhmer, Matthias (Eds.) The future of educational research. (2013)

Detailed reference viewed: 35 (11 UL)
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See detailValidity of the GSOEP short scale for the Locus of Control
Kovaleva, A.; Beierlein, C.; Kemper, Christoph UL et al

Poster (2010, July)

Detailed reference viewed: 48 (0 UL)
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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 (The) (1991)

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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 & 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 ▲]

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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 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: 97 (1 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)

Detailed reference viewed: 98 (2 UL)
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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 ▲]

Detailed reference viewed: 162 (10 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: 16 (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)

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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 ▲]

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

Presentation (2015, July 08)

Detailed reference viewed: 79 (9 UL)
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See detailValue Stream Management Training
Plapper, Peter UL; Oberhausen, Christof UL

Learning material (2016)

The VSM workshop deals with concepts in the area of Value Stream Management, comprising the analysis, design and optimization of internal material and information flows. The VSM workshop was held by Prof ... [more ▼]

The VSM workshop deals with concepts in the area of Value Stream Management, comprising the analysis, design and optimization of internal material and information flows. The VSM workshop was held by Prof. Dr.-Ing. Peter Plapper and M.Sc. Christof Oberhausen, who contribute a profound knowledge in Value Stream Management based on their ongoing research in this field. The one-day VSM workshop is targeted at an audience of 8-12 participants with a background in Lean Engineering or Operational Excellence. [less ▲]

Detailed reference viewed: 112 (8 UL)
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See detailValue Stream Management zur Synchronisation im Unternehmensverbund
Plapper, Peter UL

Scientific Conference (2016, October)

Das Thema „Wertstrom Management“ wird in Luxemburg bereits in der Bachelor Ausbildung vermittelt und für die Master vertieft. In der Forschung erweist dieses Werkzeug großes Potential zur Synchronisation ... [more ▼]

Das Thema „Wertstrom Management“ wird in Luxemburg bereits in der Bachelor Ausbildung vermittelt und für die Master vertieft. In der Forschung erweist dieses Werkzeug großes Potential zur Synchronisation und Optimierung der Wertschöpfung im Unternehmensverbund, das wir hier vorstellen möchten: Mit der Methode VSM lässt sich Verschwendung erkennen und Wertschöpfungspotentiale heben. Die Verschwendung wird damit nicht nur in den produktiven Unternehmensbereichen, sondern auch in indirekten Bereichen und ebenso in Verwaltungsfunktionen und administrativen Abteilungen visualisiert. Man erkennt Möglichkeiten, die Verschwendung abzubauen und die Wertschöpfung zu erhöhen. Bei der praktischen Anwendung dieses leistungsfähigen Werkzeugs erwiesen sich die Schnittstellen zwischen den Unternehmen als immerwährende Quellen von Verschwendung und Ineffizienzen. Hier sind die unterschiedlichen Ausprägungen der Methode VSM hinderlich für eine durchgängige Anwendung dieser Methode. Aus dieser Erkenntnis heraus schlagen wir eine Vereinheitlichung der „Best Practices“ als Industrie Standard bzw. als internationale Norm vor. Im Rahmen der aktuell laufender Forschungsprojekte an der Universität Luxemburg werden Methoden entwickelt, um das Wertstrom Management international zu standardisieren und allgemein zu vereinheitlichen. [less ▲]

Detailed reference viewed: 199 (8 UL)
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See detailValue Transmission and Zeitgeist revisited
Boehnke, Klaus; Hadjar, Andreas UL; Baier, Dirk et al

in Schönpflug, Uta (Ed.) Cultural Transmission. Psychological, Developmental, Social and Methodological Aspects (2009)

Detailed reference viewed: 96 (0 UL)