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Search Results: 1 - 10 of 297805 matches for " J. Reinhold "
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New technique for replica symmetry breaking with application to the SK-model at and near T=0
Manuel J. Schmidt,Reinhold Oppermann
Physics , 2008, DOI: 10.1103/PhysRevE.77.061104
Abstract: We describe a novel method which allows the treatment of high orders of replica-symmetry-breaking (RSB) at low temperatures as well as at T=0 directly, without a need for approximations or scaling assumptions. It yields the low temperature order function q(a,T) in the full range $0\leq a <\infty$ and is complete in the sense that all observables can be calculated from it. The behavior of some observables and the finite RSB theory itself is analyzed as one approaches continuous RSB. The validity and applicability of the traditional continuous formulation is then scrutinized and a new continuous RSB formulation is proposed.
Universality class of replica symmetry breaking, scaling behavior, and the low-temperature fixed-point order function of the Sherrington-Kirkpatrick model
Reinhold Oppermann,Manuel J. Schmidt
Physics , 2008, DOI: 10.1103/PhysRevE.78.061124
Abstract: A scaling theory of replica symmetry breaking (RSB) in the SK-model is presented in the framework of critical phenomena for the scaling regime of small inverse RSB-orders, small temperatures, small magnetic fields, and near opposite pseudo-dynamic limits. We employ the pseudo-dynamical picture (PRL98, 127201 (2007)) with two critical points, where separated temperature- and magnetic field-scaling is obtained. An unconventional scaling hypothesis for the free energy is given, modeling this separated scaling in accordance with detailed numerical self-consistent solutions for up to 200 orders of RSB. A divergent correlation-length describes the RSB-criticality as a long-range correlation effect occurring on the pseudo-lattice of RSB-orders. Rational-valued exponents are concluded with high precision from high-order RSB scaling and by using a new fixed point extrapolation method. Power laws, scaling relations, and scaling functions are analyzed.
Self-estimates of attention performance
CHRISTOPH MENGELKAMP,REINHOLD S. J?GER
Psychology Science , 2007,
Abstract: In research on self-estimated IQ, gender differences are often found. The present study investigates whether these findings are true for self-estimation of attention, too. A sample of 100 female and 34 male students were asked to fill in the test of attention d2. After taking the test, the students estimated their results in comparison to their fellow students. The results show that the students underestimate their percent rank compared with the actual percent rank they achieved in the test, but estimate their rank order fairly accurately. Moreover, males estimate their performance distinctly higher than females do. This last result remains true even when the real test score is statistically controlled. The results are discussed with regard to research on positive illusions and gender stereotypes.
Double Criticality of the Sherrington-Kirkpatrick Model at T=0
Reinhold Oppermann,Manuel J. Schmidt,David Sherrington
Physics , 2006, DOI: 10.1103/PhysRevLett.98.127201
Abstract: Numerical results up to 42nd order of replica symmetry breaking (RSB) are used to predict the singular structure of the SK spin glass at T=0. We confirm predominant single parameter scaling and derive corrections for the T=0 order function q(a), related to a Langevin equation with pseudotime 1/a. a=0 and a=\infty are shown to be two critical points for \infty-RSB, associated with two discrete spectra of Parisi block size ratios, attached to a continuous spectrum. Finite-RSB-size scaling, associated exponents, and T=0-energy are obtained with unprecedented accuracy.
Marketing Management for Consumer Products in the Era of the Internet of Things  [PDF]
Reinhold Decker, Christian Stummer
Advances in Internet of Things (AIT) , 2017, DOI: 10.4236/ait.2017.73004
Abstract: In the Internet of Things (IoT) consumer products like coffee machines and smoke detectors are connected with the Internet, which effectively expands the Internet to the physical world. Such products have the ability to collect and share data from the user’s environment and, thus, their broad emergence will affect well-established concepts presented in the extant marketing literature. In order to provide a distinct contribution, we focus on customer relationship management, product life cycle management, as well as business model development and discuss implications of the enhanced capabilities of IoT products in these fields. By means of an extensive analysis of current developments in theory and practice, we systematically deduce ten research propositions. The paper concludes with a synthesis of findings and an outlook to promising directions for further research in IoT-oriented marketing management.
Age and sex dependencies of anxiety and depression in cardiologic patients compared with the general population
Hinz, Andreas,Kittel, J?rg,Karoff, Marthin,Schwarz, Reinhold
Psycho-Social-Medicine , 2004,
Abstract: Objective: The aim of this study was to test age and sex effects on anxiety and depression using the Hospital Anxiety and Depression Scale HADS.Method: Sample 1 consisted of 2037 subjects of the German general population, and sample 2 comprised 2696 cardiologic patients.Results: In the group of the general population we observed a linear increase of depression and (to a lower extent) of anxiety with age. In contrast to that, the patients reached their anxiety and depression maxima in the range of 50 to 60 years, with decreasing mean values for older patients. This effect was observed in both sexes and was proved by an ANOVA interaction between age category and population (P<0.001). In the age range over 70 years the mean depression scores of the patients were even lower than those of the general population. Especially high anxiety and depression scores were found for retired males under 60 years of age.Conclusion: Premature retirement is associated with anxiety and depression in cardiologic patients which partly accounts for the different age effects of the samples. Longitudinal studies are needed to explain the underlying mechanisms of the age effects in more detail.
Cyberbullying in Germany – an exploration of prevalence, overlapping with real life bullying and coping strategies
JULIA RIEBEL,REINHOLD S. J?GER,UWE C. FISCHER
Psychology Science Quarterly , 2009,
Abstract: A new phenomenon of violence among pupils has been spreading over Europe in the last few years: Cyberbullying, the repeated and intended hurting of weaker schoolmates via modern communication technologies. This study shows (based on a sample of 1987 pupils), that cyberbullying exists in Germany, although the number of incidents is still rather small. It could also be shown, that the pupils who act as cyberbullies are the same as those who bully others in real life. The same overlap was found to be true for the victims. Cyberbullying can therefore be considered a subcategory of ordinary bullying instead of being considered a whole new phenomenon. The exploration of coping strategies showed, that a common factor structure underlies physical, verbal and cyberbullying. Considering the fact that the findings of the study are based on an online questionnaire with restricted representativeness, the results should however be interpreted carefully.
High dispersive and monolithic 100% efficiency grisms
J. Reinhold,M. Schulze,E. -B. Kley,A. Tünnermann
Physics , 2012,
Abstract: We present a type of grism, a series combination of transmission grating and prism, in which we reduce the number of diffraction orders and achieve a configuration with very high angular dispersion. The grism can be fabricated from a single dielectric material and requires no metallic or dielectric film layers for high transmission diffraction efficiency. One can reach 100% in the -1st transmission diffraction order and the equal damage threshold as the dielectric bulk material. We realized such an element in fused silica with an efficiency of more then 99%. The bevel backside reflection is reduced by a statistical antireflective structure, so we measured an efficiency of the entire grism of 95% at a single wavelength.
Near threshold electroproduction of the omega meson at Q2 ~ 0.5 GeV2
P. Ambrozewicz,J. Mitchell,J. Dunne,P. Markowitz,C. J. Martoff,J. Reinhold,B. Zeidman
Physics , 2004, DOI: 10.1103/PhysRevC.70.035203
Abstract: Electroproduction of the omega meson was investigated in the p(e,e'p)omega reaction. The measurement was performed at a 4-momentum transfer Q2 ~ 0.5 GeV2. Angular distributions of the virtual photon-proton center-of-momentum cross sections have been extracted over the full angular range. These distributions exhibit a strong enhancement over t-channel parity exchange processes in the backward direction. According to a newly developed electroproduction model, this enhancement provides significant evidence of resonance formation in the gamma* p -> omega p reaction channel.
Comparative Theology: Between Theology and Religious Studies
Reinhold Bernhardt
Religions , 2012, DOI: 10.3390/rel3040964
Abstract: In the German-speaking academy there is a widespread rivalry between theology and religious studies. “Comparative Theology” provokes suspicions from both sides. This contribution first takes a look at the history of the rivalry, refers then to the criticism from both sides against “Comparative Theology” and suggests a way of positioning it between the two stools. It pleads for distinguishing between the levels of (analytical) method and (constructive) interpretation as far as possible. The comparative approach should be understood and used as a method of comparative analysis in accordance with the standards of religious studies, while theological reflection should constitute the hermeneutical frame of motivation and interpretation.
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