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See detailManson-Coffin- and Ramberg-Osgood relation for headed shear studs in fatigue loading
Odenbreit, Christoph UL; Dorka, Uwe

in Improving Infrastructure Worldwide (2007)

Welded shear studs in composite bridges are subjected to statical as well as fatigue loading. To proof the fatigue resistance, the so-called Wöhler curves (S-N curves) have been established. The slip ... [more ▼]

Welded shear studs in composite bridges are subjected to statical as well as fatigue loading. To proof the fatigue resistance, the so-called Wöhler curves (S-N curves) have been established. The slip displacements in these bridges between concrete slab and steel girder however show that, the loading on the studs is more displacement than force controlled. Results on displacement-controlled fatigue push-out tests on shear studs are presented to describe the correlation between slip and bearable load cycles with the Manson-Coffin equation and the correlation between shear forces and slip with the Ramberg-Osgood equation. Both relations are combined to obtain an assessment of internal forces as well as displacements for the verification of the fatigue resistance. [less ▲]

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See detailOptimised Anchor Plates
Dorka, U.; Fromknecht, S.; Maas, S. et al

Presentation (2007)

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See detailCorrelation between stiffness of composite connections and adjacent composite beam
Odenbreit, Christoph UL; Hahn, Christoph

in 2nd International Symposium on Connections between Steel and Concrete (2007)

In the last years composite structures got more and more important for office as well as high rise buildings. Many test programs where started to study the load bearing behavior of these structures. This ... [more ▼]

In the last years composite structures got more and more important for office as well as high rise buildings. Many test programs where started to study the load bearing behavior of these structures. This paper concentrates on the stiffness behaviour of composite connections, the connecting link between beams or column and beam. The presented analysing model aims in determining the stiffness of composite connections in a practical manner. Therefore a new variable – the non-dimensional spring stiffness – is introduced. The non-dimensional stiffness is a characteristic value for one kind of composite connections, for example joints with endplates or joints with fins. The determination of the non-dimensional stiffness is based on the evaluation of 59 test results. [less ▲]

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See detailInter and Intra-Site Correlation of Large Scale Parameters from Macro Cellular Measurements at 1800MHz
Jaldén, Niklas; Zetterberg, Per; Ottersten, Björn UL et al

in EURASIP Journal on Wireless Communications & Networking (2007), 2007(3),

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See detailJoint Estimation of Mutual Coupling, Element Factor, and Phase Center in Antenna Arrays
Mowlér, Marc; Larsson, Erik G.; Lindmark, Björn et al

in EURASIP Journal on Wireless Communications & Networking (2007), 2007

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See detailOn the Maximal Diversity Order of Spatial Multiplexing With Transmit Antenna Selection
Jaldén, Joakim; Ottersten, Björn UL

in IEEE Transactions on Information Theory (2007), 53(11), 42734276

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See detailCorrelation properties of large scale fading based on Indoor measurements
Jaldén, Niklas; Hong, Aihua; Zetterberg, Per et al

in IEEE Wireless Communications and Networking Conference (WCNC) (2007)

Statistical channel models are attractive for their simplicity but sometimes lack in precision. In to improve modelling accuracy, statistical model parameters, which are dependent on the environment, are ... [more ▼]

Statistical channel models are attractive for their simplicity but sometimes lack in precision. In to improve modelling accuracy, statistical model parameters, which are dependent on the environment, are extended to include spatial and temporal correlation. In outdoor scenarios these parameters are assumed constant over large areas of several wavelengths hence the name large scale parameters. This paper studies the large scale fading (LSF) and the applicability of bringing this previously used outdoor variable to the indoor case. The impacts of the model of the LSF on the outdoor system-performance have been studied and several relevant models have been proposed for outdoor cases. We present the intra-site autocorrelation as well as the inter-site cross correlation of the LSF for an indoor channel. The results are based on two separate measurement campaigns conducted at KTH, Stockholm and TUI, Ilmenau, using a single mobile station (MS) and multiple base stations (BSs) to investigate such models. We observe that the areas under which the LSF could be assumed constant are, in indoor scenarios, so small that it can be assumed independent from one local area to another. Furthermore, we find results that point towards the existence of inter-site correlation in some specific scenarios. [less ▲]

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See detailFull Diversity Detection in MIMO Systems with a Fixed-Complexity Sphere Decoder
Jaldén, Joakim; Barbero, Luis G.; Ottersten, Björn UL et al

in Proceedings IEEE International Conference on Acoustics, Speech, and Signal Processing (2007)

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See detailThe glucocorticoid receptor gene exon 1-F promoter is not methylated at the NGFI-A binding site in human hippocampus
Moser, D.; Molitor, A.; Kumsta, Robert UL et al

in World Journal of Biological Psychiatry (2007), 8(4), 262-268

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See detailSex Specific Associations between Common Glucocorticoid Receptor Gene Variants and Hypothalamus-Pituitary-Adrenal Axis Responses to Psychosocial Stress
Kumsta, Robert UL; Entringer, S.; Koper, J. W. et al

in Biological Psychiatry (2007), 62(8), 863-869

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See detailCortisol and ACTH responses to psychosocial stress are modulated by corticosteroid binding globulin levels
Kumsta, Robert UL; Entringer, S.; Hellhammer, D. H. et al

in Psychoneuroendocrinology (2007), 32(8-10), 1153-1157

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See detailPerceptual criterion and motor threshold: a signal detection analysis of the relationship between perception and action.
Waszak, Florian; Cardoso-Leite, Pedro UL; Gorea, Andrei

in Experimental brain research (2007), 182(2), 179-88

Although a large number of studies have demonstrated that a motor response to a visual stimulus is, at least to some extent, independent of the perceptual response, little effort has been spent on the ... [more ▼]

Although a large number of studies have demonstrated that a motor response to a visual stimulus is, at least to some extent, independent of the perceptual response, little effort has been spent on the investigation of the explicit characteristics of this independency. In the present experiment, observers were presented with an S1-S2 stimulus-pair, with S1 within the threshold range and with S2 highly suprathreshold. S2 was displayed either at the same location as S1 (masked condition), or some degree to the left or right of S1 (non-masked). Both the observers' sensitivity to S1 and simple RTs elicited by the stimulus pair were jointly assessed on a trial-by-trial basis. Response times decreased with increasing S1 contrast for perceptual Hits both when S1 was masked by S2 and when it was not, but for Misses only when S1 was masked, though to a lesser extent than for Hits. When RTs are collapsed across perceptual Hits and Misses for any given S1-contrast, they were independent of whether S1 was masked or not. The data indicate that the motor system has a fixed, high-energy threshold, whereas the perceptual system has a d'-dependent criterion that can either be higher or lower than the motor threshold-depending on the particular conditions. [less ▲]

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See detailTemporal order judgment and simple reaction times: evidence for a common processing system.
Cardoso-Leite, Pedro UL; Gorea, Andrei; Mamassian, Pascal

in Journal of vision (2007), 7(6), 11

We present a simple reaction time (RT) versus temporal order judgment (TOJ) experiment as a test of the perception-action relationship. The experiment improves on previous ones in that it assesses for the ... [more ▼]

We present a simple reaction time (RT) versus temporal order judgment (TOJ) experiment as a test of the perception-action relationship. The experiment improves on previous ones in that it assesses for the first time RT and TOJ on a trial-by-trial basis, hence allowing the study of the two behaviors within the same task context and, most importantly, the association of RT to "correct" and "incorrect" TOJs. RTs to pairs of stimuli are significantly different depending on the associated TOJs, an indication that perceptual and motor decisions are based on the same internal response. Simulations with the simplest one-system model (J. Gibbon & R. Rutschmann, 1969) using the means and standard deviations of the RT to stimuli presented in isolation yield excellent fits of the mean RT to these increments when presented in sequence and moderately good fits of the RT when classified according to the TOJ categories. The present observation that the point of subjective simultaneity for stimulus pairs is systematically smaller than the difference in RT to each of the two increments in the same pairs pleads, however, in favor of distinct decision criteria for perception and action with the former below the latter. For such a case, standard one-system race models require that the internal noise associated with the TOJ be less than the one associated with the RT to the same stimulus pair. The present data show the reverse state of affairs. In short, data and simulations comply with "one-system-two-decision" models of perceptual and motor behaviors, while prompting further testing and modeling to account for the apparent discrepancy between the ordering of the two decisions. [less ▲]

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See detailImagining the Other – An Ethical Reading of A.S. Byatt's Possession and The Biographer's Tale
Steveker, Lena UL

in Onega, Susana; Ganteau, Jean-Michel (Eds.) The Ethical Component in Experimental British Fiction Since the 1960'S (2007)

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See detailDie Jugend in der Südregion Luxemburgs
Heinen, Andreas UL

Article for general public (2007)

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See detail"Tentatives spéculaires dans La Vie mode d'emploi de Georges Perec ou étude de la mise en abyme"
Raus, Tonia UL

in Wilhelm, Frank; Colas, Marion; Baustert, Raymond (Eds.) et al Le blé en herbe. Actes des journées des jeunes chercheurs en littérature et linguistique françaises à l'UNiversité du Luxembourg (2007)

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See detailQuantum master equation for the microcanonical ensemble
Esposito, Massimiliano UL; Gaspard, Pierre

in Physical Review E (2007), 76(4),

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See detailTo a Cosmopolite Education respecting diversity and pluralism in European school systems
Meyers, Christian UL

in Citizenship multiculturalism cosmopolitanism: proceedings from the international conference, University of Cyprus, Nicosia, 3-4 November 2007, Volume 1 (2007)

Detailed reference viewed: 8 (1 UL)