727 research outputs found
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The British and Irish Venus (Catalogue Vol. 5.1)
No full textCompilation of 2113 artworks (sculptures, reliefs, paintings, frescoes, drawings, prints and illustrations) of 912 identified artists of Great Britain and Ireland, from the Middle Ages to Modern Times. With an Index of Artists, a Directory of Owners and an extensive Bibliography. 197 pp
Artworks of non-European artists
No full textThematic Research Collection of 1343 artworks (sculptures, reliefs, paintings, frescoes, drawings, prints and illustrations) by non-European artists
Appendix to: The procurement of Rhum bloodstone and the Rhum bloodstone exchange network – a social territory in the Scottish Inner Hebrides?
No full textDer Zweck des vorliegenden Aufsatz ist die Diskussion von “Rhum bloodstone” und die Verbreitung archäologischer Artefakte aus ‘bloodstone’ auf den Schottischen Hebriden. Dabei richtet sich der Fokus besonders auf erkannte Verteilungsmuster, die Beschaffung und den Austausch von ‘bloodstone’ und das durch die Verbreitung von ‘bloodstone’ festgelegte Sozialterritorium
Keywords in Augustine's Letters (KAL)
No full text252 latin letters, based on the CAG Online, were lemmatized with the aid of the TreeTagger and the Latin parameter files of Gabriele Brandolini. Afterwards, Lemmatization errors were corrected manually. With Wordsmith 7.0, I extracted key words out of the lemmas automatically. The results were exported in MS Excel where I added an Index and modified the design to provide it more user-friendly. Furthermore, I created a register, which makes it easier to compare parallels of the key words in the letters of Augustine. They are sorted by frequency or alphabet. It provides useful additional information for everyone who wants to study style or content of Augustine's letters
Imputation of Missing Genotypes within LD-Blocks Relying on the Basic Coalescent and Beyond [Source Code]
No full textBackground
Genotypes not directly measured in genetic studies are often imputed to improve statistical power and to increase mapping resolution. The accuracy of standard imputation techniques strongly depends on the similarity of linkage disequilibrium (LD) patterns in the study and reference populations. Here we develop a novel approach for genotype imputation in low-recombination regions that relies on the coalescent and permits to explicitly account for population demographic factors.
To test the new method, study and reference haplotypes were simulated and gene trees were inferred under the basic coalescent and also considering population growth and structure. The reference haplotypes that first coalesced with study haplotypes were used as templates for genotype imputation. Computer simulations were complemented with the analysis of real data. Genotype concordance rates were used to compare the accuracies of coalescent-based and standard (IMPUTE2) imputation.
Results
Simulations revealed that, in LD-blocks, imputation accuracy relying on the basic coalescent was higher and less variable than with IMPUTE2. Explicit consideration of population growth and structure, even if present, did not practically improve accuracy. The advantage of coalescent-based over standard imputation increased with the minor allele frequency and it decreased with population stratification. Results based on real data indicated that, even in low-recombination regions, further research is needed to incorporate recombination in coalescence inference, in particular for studies with genetically diverse and admixed individuals.
Conclusions
To exploit the full potential of coalescent-based methods for the imputation of missing genotypes in genetic studies, further methodological research is needed to reduce computer time, to take into account recombination, and to implement these methods in user-friendly computer programs. Here we provide reproducible code which takes advantage of publicly available software to facilitate further developments in the field
Perfusion quantification data for "Towards Quantitative Perfusion MRI of the Lung in COPD: The Problem of Short-Term Repeatability"
No full textABSTRACT
Purpose
4D perfusion magnetic resonance imaging (MRI) with intravenous injection of contrast agent allows for a radiation-free assessment of regional lung function. It is therefore a valuable method to monitor response to treatment in patients with chronic obstructive pulmonary disease (COPD). This study was designed to evaluate its potential for monitoring short-term response to hyperoxia in COPD patients.
Materials and Methods
19 prospectively enrolled COPD patients (median age 66y) underwent paired dynamic contrast-enhanced 4D perfusion MRI within 35min, first breathing 100% oxygen (injection 1, O2) and then room air (injection 2, RA), which was repeated on two consecutive days (day 1 and 2). Post-processing software was employed to calculate mean transit time (MTT), pulmonary blood volume (PBV) and pulmonary blood flow (PBF), based on the indicator dilution theory, for the automatically segmented whole lung and 12 regions of equal volume.
Results
Comparing O2 with RA conditions, PBF and PBV were found to be significantly lower at O2, consistently on both days (p
Conclusion
The second injection (RA) yielded higher PBF and PBV, which apparently contradicts the established hypothesis that hyperoxia increases lung perfusion. Quantification of 4D perfusion MRI by current software approaches may thus be limited by residual circulating contrast agent in the short-term and even the next day.
Dataset
The dataset contains the values of derived perfusion parameters, including numbers calculated using vascular suppression, as referred to in the supplement of the publication
The Italian Venus revisited (Catalogue Vol. 1.2)
No full textTopical catalogue of 6,985 artworks (sculptures, reliefs, paintings, frescoes, drawings, prints and illustrations) of 1,876 identified Italian artists and their repetitions.
Categorized under 18 main Topics, with an Index of Artists and a list of Information Resources, including online sources, iconographic collections and bibliographical references - 618 pages
Einführung in die DGUF-Tagung am 4. Juli 2017 in Mainz. „Ein Berufsverband für die Archäologie?“ [Supplements]
No full textDie DGUF-Tagung 2017 hat ein hohes Potenzial, sich im Nachhinein als ein sehr öffentlich gescheitertes Vorhaben der DGUF zu erweisen, oder auch als ein wesentlicher struktureller Wendepunkt in der deutschen Archäologie. Die Verfasser möchten in dieser Einführung nachzeichnen, wie es zu der Themensetzung und Tagung 2017 kam, welche Agenden die Beteiligten hatten und wer welche Rolle einnahm
Cooling Off in Negotiations: Does it Work? [Dataset]
No full textNegotiations frequently end in conflict after one party rejects a final offer. In a large-scale Internet experiment, we investigate whether a 24-hour cooling-off period leads to fewer rejections in ultimatum bargaining. We conduct a standard cash treatment and a lottery treatment, where subjects receive lottery tickets for several large prizes. In the lottery treatment, unfair offers are less frequently rejected, and cooling off reduces the rejection rate further. In the cash treatment, rejections are more frequent and remain so after cooling off. We also study the effect of subjects' degree of “cognitive reflection” on their behavior
Religion, moral attitudes and economic behavior [Dataset]
No full textUsing data for a representative sample of the Dutch population with information about
participants’ religious background, we study the association between religion and moral behavior and attitudes. We find that religious people are less accepting of unethical economic behavior (e.g., tax evasion, bribery) and report more volunteering. They are equally likely as non-religious people to betray trust in an experimental game, where social behavior is unobservable and not directed to a self-selected group of recipients. Religious people also report lower preference for redistribution. Considering differences between denominations, Catholics betray less than non-religious people, while Protestants betray more than Catholics and are indistinguishable from the non-religious. We also explore the intergenerational transmission and the potential causality of these associations