TY - JOUR A1 - Bonačić-Koutecký, Vlasta A1 - Hartmann, Michael A1 - Pittner, Jiřı́ A1 - Dam, Huub van T1 - Theoretical exploration of ultrafast spectroscopy of small clusters JF - International Journal of Quantum Chemistry N2 - The central issue in femtosecond (fs) time resolved spectroscopy of clusters is the investigation of geometric relaxation and internal vibrational redistribution (IVR) after optical excitation in a nonequilibrium configuration of nuclei by laser photoelectron excitation, and corresponding time delayed probing by multiphoton-ionization. For this purpose, we have developed multistate ab initio molecular dynamics involving adiabatic ground and excited electronic states, as well as nonadiabatic coupling between them, using the time evolution of initial thermal ensemble in Wigner representation. The combination of ab initio quantum chemical methods, used for the adiabatic and nonadiabatic molecular dynamics “on the fly,” and the Wigner distribution approach for the description of the motion of the nuclei allowed us the accurate determination of pump-probe and pump-dump signals also under temperature dependent initial conditions. The connection between simulated pump-probe signals and the underlying dynamics of nuclei involving adiabatic electronic ground states has been first established for the example of the Agequation image/Ag3/Agequation image systems, and compared with experimental negative-to-neutral-to-positive NeNePo pump-probe signals. Our simulations reproduced the experimental NeNePo results and determined, in addition to the timescales of geometric relaxation, the conditions under which the resonant or dissipative IVR, as well as vibrational coherence, should be found in the experimental pump-probe signals. This can be realized in the zero electron kinetic energy NeNePo-ZEKE experiments, which are in progress. The above combination of methods has been recently extended to the analysis of the timescales as well as of the dynamics in excited electronic states of the nonstoichiometric NanFn−1 (n=2–4) clusters with the single excess valence electron. Our approach allows the simulation of femtosecond NeExPo-pump-probe and NeExNe-pump-dump signals, based on an analytic formulation which utilizes temperature dependent ground state initial conditions of neutral system (Ne); an ensemble of trajectories carried out either on the adiabatic electronic excited state (Ex), or on both the excited and the ground states through nonadiabatic coupling in connection with the fewest switching hopping algorithm for the investigation of the dynamics of the system; and either the cationic (Po) or the neutral ground state (Ne) for the probing step. The choice of the systems has been made in order to determine the timescales of processes involving (1) fast geometric relaxation leaving the bonding frame intact versus IVR, as during the adiabatic dynamics in the first excited state of Na4F3, being the smallest prototype of F-colored centers in the bulk; and (2) the photo-isomerization process through the conical intersection during nonadiabatic dynamics due to the long amplitude motion, as in the Na3F2 cluster after breaking of one metallic and one ionic bond, representing the first example of a five atomic cluster in the gas phase exhibiting conical intersection between the ground and the first excited state. In both cases, full complexity of the problem has been considered taking into account all degrees of freedom. The investigated systems represent important test cases for providing the conceptual framework of ultrafast dynamics in finite systems. KW - Quantum chemistry KW - Ultrafast spectroscopy Y1 - 2001 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-5712 VL - 84 IS - 6 SP - 714 EP - 739 ER - TY - JOUR A1 - Bonačić-Koutecký, Vlasta A1 - Pittner, Jiřı́ A1 - Pou-Amérigo, Rosendo A1 - Hartmann, Michael T1 - Ab-initio study of structural and optical properties of nonstoichiometric alkalimetal- oxides JF - Zeitschrift für Physik D N2 - Structural and optical properties of nonstoichiometric LinO and NanO (n = 3, 4) clusters containing one and two excess electrons are studied using ab-initio methods accounting for electron correlation. We show that calculated absorption patterns are excellent fingerprints of structural and bonding properties. The optical response of Li4O and Na4O clusters with the most stable tetrahedral type structures is characterized by a common feature, that is the appearance of a dominant intense transition in infrared regime although excess of electrons are not localized, as it is the case for small alkali-halide clusters, with cuboid corner vacancy (surface F-center in finite systems). KW - Inorganic Chemistry KW - Physical chemistry Y1 - 1997 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-5748 VL - 40 IS - 1 SP - 445 EP - 447 ER - TY - CHAP A1 - Brantl, Anne A1 - Gockel, Christine A1 - Gibson, A. T1 - Mit Witzen Geld verdienen?: der Einfluss von Humor auf Verhandlungsprozesse und -ergebnis T2 - 48. Kongress der Deutschen Gesellschaft für Psychologie, Bielefeld N2 - Keine Angabe - No details KW - Psychologie KW - Humor Y1 - 2012 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. ER - TY - CHAP A1 - Brauner, Elisabeth A1 - DeMore, Jaime A1 - Gockel, Christine T1 - Cognitive loafing in work groups: when employees would rather not think T2 - 16th Conference of the European Association of Work and Organizational Psychology, Münster N2 - Keine Angabe - No details KW - Psychology KW - Cognitive loafing Y1 - 2013 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. ER - TY - CHAP A1 - Brauner, Elisabeth A1 - DeMore, Jaime A1 - Gockel, Christine T1 - Counterproductive behaviors in teams: detrimental effects of cognitive loafing on transactive memory T2 - 84th Meeting of the Eastern Psychological Association, New York N2 - Cognitive interdependence in teams requires members to contribute their share to a common task. Cognitive loafing(reduced cognitive effort) can disrupt knowledge exchange in transactive memory systems. We administered a cognitive loafing measure to investigate its effects. Results show that cognitive loafing has significant negative impact on transactive memory, whereas affective commitment has a positive impact on transactive memory. Furthermore, we found that cognitive loafing within a team was not contagious among team members. KW - Psychology KW - Transactive memory KW - Counterproductive behaviors Y1 - 2013 N1 - Volltext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. ER - TY - CHAP A1 - Britze, Nils A1 - Büsch, Victoria A1 - Hessel, Franz A1 - Stähler, Tobias A1 - Ternès, Anabel T1 - Die steigende Bedeutung des betrieblichen Demografie- und Gesundheitsmanagements im 21. Jahrhundert T2 - Herausforderung Management N2 - Keine Angabe No details KW - Entwicklung KW - Krankheitslast Y1 - 2016 N1 - Buch verfügbar in der Bibliothek der SRH Berlin School of Management and Technology, Signatur AL24000 3. Book available in the library of the SRH Berlin School of Management and Technology, shelf mark AL24000 3. VL - 2016 SP - 62 EP - 79 PB - SRH Hochschule Heidelberg CY - Heidelberg ER - TY - THES A1 - Brunn, Ann-Sophie T1 - Gossip im Onboarding: Der Einfluss von Geschlecht des Newcomers und Position des Gossip-Gegenstandes auf die Arbeitgeberattraktivität N2 - Jeder sechste Berufstätige ist auf der Suche nach einem neuen Arbeitgeber - die Arbeitswelt befindet sich momentan in einem dramatischen Wandel. Dadurch gewinnt Onboarding sowohl für Organisationen als auch für Newcomer zunehmend an Bedeutung. Die Fähigkeit einer Organisation, die qualifiziertesten Bewerber anzuziehen und zu halten, ist auf dem aktuellen Arbeitsmarkt von hoher Bedeutung, um konkurrenzfähig und vor allem lebensfähig zu bleiben. Eine Möglichkeit, wie dies gelingen kann, ist eine gesteigerte Arbeitgeberattraktivität. Während des Onboarding-Prozesses findet eine hohe soziale Interaktion statt. Wann immer dies der Fall ist, ist der Informationsaustausch anfällig für soziale Phänomene, wie beispielsweise Gossip. In dieser Arbeit wird die Rolle der Arbeitgeberattraktivität in der besonderen Situation des Onboardings in Verbindung mit Gossip betrachtet. Ziel dieser quantitativen Bachelorarbeit ist es herauszufinden, ob das Geschlecht des Newcomers und die Position des Gossip-Gegenstandes Einfluss auf die Arbeitgeberattraktivität haben. Um dies zu erreichen, wurden 242 Teilnehmende mithilfe eines Online-Fragebogens im Querschnitt befragt. Im Rahmen dieser Arbeit konnten vielfältige neue Zusammenhänge aufgedeckt werden. Die Daten bestätigten eine vorhergesagte negative Beziehung zwischen negativem Gossip während des Onboardings und der von Newcomern eingeschätzten Arbeitgeberattraktivität. Des Weiteren haben die Ergebnisse ebenfalls einen signifikanten Einfluss der Position des Gossip-Gegenstandes gezeigt, die Position einer Führungskraft wirkte sich negativer auf die Arbeitgeberattraktivität aus als die Position eines Teammitglieds. Es wurde kein signifikanter Effekt des Geschlechts des Gossip-Empfängers gefunden. Gegenüber der persönlichen Neigung zu Gossip am Arbeitsplatz sind diese gewonnenen Ergebnisse robust. Die Arbeit enthält Limitationen, Implikationen und Richtungen für zukünftige Forschungen. KW - Onboarding KW - Gossip KW - Arbeitgeberattraktivität KW - Newcomer KW - Signaltheorie KW - Internationale Betriebswirtschaftslehre Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-11880 N1 - Das Einverständnis zur Veröffentlichung liegt der Bibliothek vor. Consent for publication has been given to the library. ER - TY - CHAP A1 - Brusch, Michael A1 - Büsch, Victoria T1 - The Role of Job related Factors to Prolong Working Life: An Analysis for the German Labour Market T2 - Proceedings of the 15th QMOD Conference on Quality and Service Sciences N2 - Labour markets and companies in some developed countries have to consider general demographic changes. While the group of elderly workers grows, their sustainment will become more important in future (e.g. Höhn et al. 2008; Dittrich et al. 2011). Especially in combination with an ageing population and a later entrance into the labour market a future shortfall of active workers can be assumed. Germany – as one example of such countries – has only a limited number of options that policy makers and companies can use in the coming decades. One of these is the increased use of the three growing segments in the population: older people, immigrants and an increased participation of women in the labour market. This study focuses the first segment as a potential work force. When promoting that a higher employment rate of older workers can be considered as serious alternative for dealing with the current shortfall of skilled labour force, the motivation of these workers has to be investigated. The works of Alavinia et al. (2007) and Wang, Shultz (2010), which discuss factors influencing the decision to prolong the working age, can be used as starting point. In this context, we analyse the German labour market as an example for a developed country. For the analysis, we use a representative data set of the Federal Institute for Population Research of Germany from published in2008. Here, 1,500 employees (blue collar workers, white collar workers, civil servants) aged between 55 and 64 years were asked about their work situation, motivation and related factors (e.g. further education, job rewards; Büsch et al. 2010). During the data analysis we identify groups of elderly workers using cluster analysis (e.g. Cormack 1971) to develop recommendations for companies. By using existing work motivation and related findings, as well as a representative empirical data set, our study reveals a possibility to identify, classify, and enhance the motivation of workers at the end of their career. This is necessary to keep the quality of goods and service production at an appropriate level. The value of the paper comes from the large number of respondents of the data set and the high relevance of the German situation for other developed countries. At the end, powerful recommendations for companies how to involve and motivate elderly workers for longer periods of employment can be derived. KW - Elderly Workers KW - Further Education KW - Workability KW - Work Motivation Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-2690 SP - 272 EP - 281 ER - TY - CHAP A1 - Brusch, Michael A1 - Büsch, Victoria A1 - Ante, Arta T1 - Typology of Workers at the End of Their Career in Germany T2 - 13th International Conference on Combined Actions and Combined Effects of Environmental Factors, Tampere (Finnland) N2 - Keine Angabe No details KW - Older Worker KW - Germany Y1 - 2011 N1 - Vollext aus urheberrechtlichen Gründen nicht verfügbar. Fulltext due to copyright not available. ER - TY - CHAP A1 - Brüning, Stefan A1 - Zapotoczky, Johannes A1 - Ibach, Peter A1 - Stantchev, Vladimir T1 - Cooperative Positioning with MagicMap T2 - Workshop on Positioning, Navigation and Communication 2007 (WPNC'07) N2 - We present MagicMap, a cooperative, hybrid positioning system developed at the Humboldt-University in Berlin. While most other positioning systems are limited to specific scenarios and technologies our system provides means to incorporate any available wireless networking technology. Currently, MagicMap supports WLAN, RFID, and ZigBee as wireless technologies for positioning and Linux, Windows, and Windows CE as platforms. Position calculation and exchange is based on a cooperative approach allowing an open internet community to share the required data. KW - Cooperative KW - Hybrid KW - Indoor KW - Positioning Y1 - 2007 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0298-opus4-695 ER -