cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hammering, mauling, and kissing: stereotyped courtship behavior in Cardiocondyla ants
Creators: name: Mercier, J.-L.
name: Lenoir, J.-C.
name: Eberhardt, A.
name: Frohschammer, S.
name: Williams, C.
name: Heinze, Jürgen
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Cardiocondyla; mating behavior; male polymorphism; sexual selection
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: Sex appears to be a rather prosaic and casual event in the life of most social Hymenoptera. In contrast, mating in the ant genus Cardiocondyla is regularly preceded by a prolonged and stereotypic courtship display. Pummeling the head of the female with mandibles and / or antennae and vibrations of the gaster, presumably stridulation, are essential parts of male courtship. The overall structure of the mating pattern is conserved throughout species and between winged and wingless, “ergatoid” males, but exhibits species-specific idiosyncrasies. For example, C. elegans males regularly end the interaction with a female with a short mouth-to-mouth contact. Variation in the duration of the precopulatory phase and the copulation itself might reflect different degrees of inter- and intrasexual selection. More information on the dynamics of sperm transfer and the risk and intensity of sperm competition are needed to better understand the evolution of the complex mating behavior in this genus.
On well-separated sets and fast multipole methods
Creators: name: Engblom, Stefan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Numerical Analysis (math.NA)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 65M15, 65M80

description: The notion of well-separated sets is crucial in fast multipole methods as the main idea is to approximate the interaction between such sets via cluster expansions. We revisit the one-parameter multipole acceptance criterion in a general setting and derive a relative error estimate. This analysis benefits asymmetric versions of the method, where the division of the multipole boxes is more liberal than in conventional codes. Such variants offer a particularly elegant implementation with a balanced multipole tree, a feature which might be very favorable on modern computer architectures.
The Pristine survey: XXV. The very metal-poor Galaxy: Chemodynamics through the follow-up of the Pristine-Gaia synthetic catalogue
Creators: name: Viswanathan, Akshara
name: Yuan, Zhen
name: Ardern-Arentsen, Anke
name: Starkenburg, Else
name: Martin, Nicolas F.
name: Youakim, Kris
name: Ibata, Rodrigo A.
name: Sestito, Federico
name: Matsuno, Tadafumi
name: Prieto, Carlos Allende
name: Barwell, Freya
name: Bayer, Manuel
name: Doliva-Dolinsky, Amandine
name: Fernandez-Alvar, Emma
name: Anta, Pablo M. Galan-de
name: Jhass, Kiran
name: Longeard, Nicolas
name: Arroyo-Polonio, Jose Maria
name: Massana, Pol
name: Montelius, Martin
name: Rusterucci, Samuel
name: Santos, Judith
name: Thomas, Guillaume F.
name: Vitali, Sara
name: Wu, Wenbo
name: Yarker, Paige
name: Ye, Xianhao
name: Aguado, David S.
name: Gran, Felipe
name: Navarro, Julio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Pristine-\textit{Gaia} synthetic catalogue provides reliable photometric metallicities for $\sim$30 million FGK stars using the Pristine survey model and Gaia XP spectra. We perform the first low-to-medium-resolution spectroscopic follow-up of bright (G<15) and distant (up to 35 kpc) very and extremely metal-poor (V/EMP, [Fe/H]<-2.5) red giant branch stars from this. We use Isaac Newton Telescope/Intermediate Dispersion Spectrograph (INT/IDS) observations centred around the calcium triplet region ideal for V/EMP stars. We find that 76\% of our stars indeed have [Fe/H]<-2.5 with these inferred spectroscopic metallicities and only 3\% are outliers with [Fe/H] > -2.0. We report a success rate of 77\% and 38\% in finding stars with [Fe/H]<-2.5 and -3.0 respectively. This will allow for 10,000-20,000 homogeneously analysed EMP stars using the WEAVE survey follow-up of Pristine EMP candidates. We associate 20\%, 46\%, and 34\% of the stars to be confined to the disc plane, or to have inner and outer halo orbits, respectively. We also associate these V/EMP stars to known accretion events such as Gaia-Enceladus-Sausage (GES), LMS-1/Wukong, Thamnos, Helmi streams, Sagittarius, Sequoia, etc. For the stars that orbit close to the disc plane, we find that the prograde region with low vertical action is overdense with a significance of 4$σ$ as compared to its retrograde counterpart. We also find three new (brightest) members of the most metal-poor stellar stream, C-19, one of which is 50$^\circ$ away from the main body of the stream. Our measured mean metallicity, velocity dispersion, and stream width are consistent with the literature, but our results favour a higher distance ($\sim$21.5 kpc) for the stream. We publish a catalogue (and 1D spectra) of 215 V/EMP stars from this spectroscopic follow-up and showcase the power of chemokinematic analysis of V/EMP end.
description: Published version. The catalogue of 215 V/EMP stars and their reduced 1D spectra is available here https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/695/A112
22nd European Meeting on Environmental Chemistry: Book of Abstracts - The Role of Ni Film Structure on Catalytic Methane Decomposition
Creators: name: Alves, Luis
Publisher: name: Zenodo
Year: 2022

description: Catalytic methane decomposition can produce cost competitive H2, from methane, while avoiding direct emissions of CO2 [1]. This technology may revolutionize the energy sector, promoting a swift transition from carbon-based to hydrogen-based energy. However, methane decomposition is currently hindered by catalyst deactivation and clogging of catalyst beds, in conventional reactor designs, requiring research on alternative catalytic systems. Catalytic films, typically used in membrane reactors, are one of such alternatives [2].
Population structure and the co-evolution between social parasites and their hosts
Creators: name: Brandt, Miriam
name: Fischer-Blass, Birgit
name: Heinze, Jürgen
name: Foitzik, Susanne
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: evolutionary potential; gene flow; host–parasite interactions; local adaptation; migration; slavemaking ants
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)
subject: Animals
subject: Ants/genetics
subject: Base Sequence
subject: Canada
subject: Cluster Analysis
subject: DNA Primers
subject: DNA, Mitochondrial/genetics
subject: Europe
subject: Evolution
subject: Gene Flow/genetics
subject: Gene Frequency
subject: Genetic Variation
subject: Genetics, Population
subject: Host-Parasite Interactions
subject: Microsatellite Repeats/genetics
subject: Molecular Sequence Data
subject: Phylogeny
subject: Sequence Analysis, DNA
subject: Species Specificity
subject: United States
subject: Wasps/genetics

description: Co-evolutionary trajectories of host-parasite interactions are strongly affected by the antagonists' evolutionary potential, which in turn depends on population sizes as well as levels of recombination, mutation, and gene flow. Under similar selection pressures, the opponent with the higher evolutionary rate is expected to lead the co-evolutionary arms race and to develop local adaptations. Here, we use mitochondrial DNA sequence data and microsatellite markers to assess the amount of genetic variability and levels of gene flow in two host-parasite systems, each consisting of an ant social parasite--the European slavemaker Harpagoxenus sublaevis and the North American slavemaker Protomognathus americanus--and its two main host species. Our population genetic analyses revealed limited gene flow between individual populations of both host and parasite species, allowing for a geographic mosaic of co-evolution. In a between-system comparison, we found less genetic variability and more pronounced structure in Europe, where previous behavioural studies demonstrated strong local adaptation. Within the European host-parasite system, the larger host species Leptothorax acervorum exhibited higher levels of both genetic variability and gene flow, and previous field data showed that it is less affected by the social parasite H. sublaevis than the smaller host Leptothorax muscorum, which has genetically depleted and isolated populations. In North America, the parasite P. americanus showed higher levels of gene flow between sites, but overall less genetic diversity than its hyper-variable main host species, Temnothorax longispinosus. Interestingly, recent ecological and chemical studies demonstrated adaptation of P. americanus to local host populations, indicating the importance of migration in co-evolutionary interactions.
1783 centennial 1883 Evacuation Day : November 25th
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 1883
Subjects: Evacuation Day, New York, N.Y., 1783--Pictorial works.
Evacuation Day, New York, N.Y., 1783--Centennial celebrations, etc.

description: Commemorative ribbon celebrating the centennial of Evacuation Day. Printed on the ribbon is a scene with a man nailing an American flag to a pole above a crowd of people as Union Flag floats in mid-air. View of New York Harbor in background
One-cohomology and the uniqueness of the group measure space decomposition of a II_1 factor
Creators: name: Vaes, Stefaan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Operator Algebras (math.OA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We provide a unified and self-contained treatment of several of the recent uniqueness theorems for the group measure space decomposition of a II_1 factor. We single out a large class of groups Γ, characterized by a one-cohomology property, and prove that for every free ergodic probability measure preserving action of Γthe associated II_1 factor has a unique group measure space Cartan subalgebra up to unitary conjugacy. Our methods follow closely a recent article of Chifan-Peterson, but we replace the usage of Peterson's unbounded derivations by Thomas Sinclair's dilation into a one-parameter group of automorphisms.
description: v2: minor changes, final version, to appear in Mathematische Annalen
On the Observability of Collective Flavor Oscillations in Diffuse Supernova Neutrino Background
Creators: name: Chakraborty, Sovan
name: Choubey, Sandhya
name: Kar, Kamales
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Collective flavor oscillations are known to bring multiple splits in the supernova (SN) neutrino and antineutrino spectra. These spectral splits depend not only on the mass hierarchy of the neutrinos but also on the initial relative flux composition. Observation of spectral splits in a future galactic supernova signal is expected to throw light on the mass hierarchy pattern of the neutrinos. However, since the Diffuse Supernova Neutrino Background (DSNB) comprises of a superposition of neutrino fluxes from all past supernovae, and since different supernovae are expected to have slightly different initial fluxes, it is pertinent to check if the hierarchy dependent signature of collective oscillations can survive this averaging of the flux spectra. Since the actual distribution of SN with initial relative flux spectra of the neutrinos and antineutrinos is unknown, we assume a log-normal distribution for them. We study the dependence of the hierarchy sensitivity to the mean and variance of the log-normal distribution function. We find that the hierarchy sensitivity depends crucially on the mean value of the relative initial luminosity. The effect of the width is to reduce the hierarchy sensitivity for all values of the mean initial relative luminosity. We find that in the very small mixing angle ($θ_{13}$) limit considering only statistical errors even for very moderate values of variance, there is almost no detectable hierarchy sensitivity if the mean relative luminosities of $ν_e$ and $\barν_e$ are greater than 1.
description: 9 pages, 5 figures, version matches published version in Phys.Lett.B
Phylogeny and phylogeography of the Mediterranean species of the parasitic ant genus Chalepoxenus and its Temnothorax hosts
Creators: name: Beibl, J.
name: Buschinger, A.
name: Foitzik, S.
name: Heinze, J.
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Social parasitism; slave-making ants; inquilinism; Formicoxenini; Chalepoxenus; Temnothorax
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: We analysed the phylogenetic and phylogeographic relationships of four Mediterranean species of the rare slave-making ant genus Chalepoxenus and eleven of its about 20 Temnothorax host species by sequencing the mitochondrial Cytochrome Oxidase I and II genes. Neighbour-Joining, Maximum Parsimony and Bayesian analyses based on 1320 bp indicate that the genus Chalepoxenus constitutes a monophylum. In all three analyses, C. kutteri from Southwest Europe and the workerless, “degenerate slavemaker” C. brunneus from North Africa form a monophyletic group. C. muellerianus and C. tauricus, distributed in Southern Europe and Ukraine, respectively, form a monophylum in the Neighbour-Joining and the Maximum Parsimony analysis. In our limited set of only 11 of several hundred Temnothorax species, T. flavicornis forms the sister group of Chalepoxenus. Our study further indicates paraphyly of the genus Temnothorax with respect to Chalepoxenus. Moreover, the results suggest that speciation in this slave-making genus is possibly caused by the formation of host races as different Chalepoxenus species use different hosts, and some samples seem to cluster by host species rather than by geographical distance.
Colony growth in Myrmica rubra with supplementation of myrmecochorous seeds
Creators: name: Fokuhl, Gerriet
name: Heinze, Jürgen
name: Poschlod, Peter
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Ant–plant mutualism; Caste determination; Colony growth; Elaiosome; Myrmecochory; Myrmica rubra
subject: 580 Pflanzen (Botanik)
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: Myrmecochory is an important ant–plant relationship, which presumably has benefits for the reproductive success of ant colonies through the nutritional value of elaiosomes. In a feeding experiment, we provided elaiosomes of Scilla bifolia and Corydalis cava to colonies of Myrmica rubra. Seeds were transported by ant workers to their nests and the elaiosomes were removed afterwards. After 3 months, elaiosome-supplemented colonies contained significantly more worker pupae than control colonies, whereas the number of new female sexuals was reduced. This result is discussed as a possible long-term benefit for M. rubra colonies through myrmecochory by colony growth.
“Selfish worker policing” controls reproduction in a Temnothorax ant
Creators: name: Stroeymeyt, Nathalie
name: Brunner, Elisabeth
name: Heinze, Jürgen
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Kin conflict; Worker policing; Dominance; Temnothorax unifasciatus
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: Animal societies, including those of humans, are under constant threat by selfish individuals, who attempt to enforce their own interests at the cost of the group. In the societies of bees, wasps, and ants, such individual selfishness can be prevented by “policing,” whereby workers or queens impede the reproduction of other individuals by aggression, immobilization, or egg eating. In this study, we report on a particular kind of reproduction control in the ant Temnothorax unifasciatus, which can be considered as a selfish act itself. We experimentally induced workers to lay eggs by dividing several colonies into two halves, one with and one without a queen. In queenless colonies, workers established rank orders by aggression and several top-ranking workers started to reproduce. Upon reunification, egg-laying workers mostly stopped behaving aggressively. They were neither attacked by the queen nor by random workers, but instead received infrequent, nondestructive, targeted aggression from a few workers, most of which became fertile when the queen was later removed. The introduction of differentially stained worker-laid and queen-laid eggs in queenright fragments did not lead to a selective removal of worker-laid eggs. Hence, there appears to be no collective worker policing in T. unifasciatus. Instead, reproduction appears to be controlled mostly through a few attacks from high-ranking workers, which, in this way, might attempt to selfishly increase their chances of future reproduction.
Code-mixed Sentiment and Hate-speech Prediction
Creators: name: Yadav, Anjali
name: Garg, Tanya
name: Klemen, Matej
name: Ulcar, Matej
name: Agarwal, Basant
name: Sikonja, Marko Robnik
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Code-mixed discourse combines multiple languages in a single text. It is commonly used in informal discourse in countries with several official languages, but also in many other countries in combination with English or neighboring languages. As recently large language models have dominated most natural language processing tasks, we investigated their performance in code-mixed settings for relevant tasks. We first created four new bilingual pre-trained masked language models for English-Hindi and English-Slovene languages, specifically aimed to support informal language. Then we performed an evaluation of monolingual, bilingual, few-lingual, and massively multilingual models on several languages, using two tasks that frequently contain code-mixed text, in particular, sentiment analysis and offensive language detection in social media texts. The results show that the most successful classifiers are fine-tuned bilingual models and multilingual models, specialized for social media texts, followed by non-specialized massively multilingual and monolingual models, while huge generative models are not competitive. For our affective problems, the models mostly perform slightly better on code-mixed data compared to non-code-mixed data.
Role of fibrillation on Poisson's ratio of expanded polytetrafluoroethylene (PTFE)
Creators: name: Vavlekas, Dimitrios A.
Publisher: name: University of British Columbia
Year: 2017

description: The polytetrafluoroethylene (PTFE) paste extrusion was studied to elucidate the role of structure formation (fibrillation) on the Poisson’s ratio of final products such as stents and other implants. In particular two types of PTFE have been studied in capillary extrusion using dies having different reduction ratios (RR) and die entrance angles. The extrudates collected at different processing conditions, were tested in uniaxial extension to assess their mechanical properties. The tensile modulus, yield stress and ultimate tensile strength of the obtained extrudates were found to be increasing functions of reduction ratio, although the opposite effect was found for the ultimate elongational strain. Moreover, a PTFE paste was extruded using a capillary rheometer at various temperatures through cylindrical dies of different reduction ratios (1-D structure samples). Uniaxial tensile experiments were performed on the collected extrudates using the SER at different temperatures and Hencky strain rates. A nonlinear viscoelastic model (Matsuoka) was used to model the transient tensile results. An empirical model was also developed to predict the tensile ultimate strength as a function of processing conditions such as temperature and die reduction ratio, as well as, the testing operating conditions i.e., temperature and Hencky strain rate. PTFE flat profiles were extruded using slit dies, which promoted orientation of fibrils in two directions (2-D structure samples). Uniaxial tensile experiments were performed on the collected extrudates using the SER at different temperatures and Hencky strain rates to determine mechanical properties. Poisson’s ratio was determined using image analysis and the results were compared using data from the 1-D structure samples. Polarized Raman spectroscopy was used to gain additional information on the degree of fibril orientation at different locations along and across the width and length of the extrudates. Finally, a simple model was derived for the density change in tensile deformation by taking into the account the Poisson’s ratio and the strain recovery. Results of the Raman spectra and the strain recovery coefficient from density changes, were found to be in agreement with the fibril structure/morphology obtained from SEM micrographs.
Analytic morphology in clinical and experimental dermatology
Creators: name: Smoller, Josef
name: Stolz, Wilhelm
name: Bahmer, Friedrich A.
name: el-Gammal, Stefan
name: Heinisch, Georg
name: Mattfeldt, Torsten
name: Nilles, Martin
name: Otto, Friedrich
name: Peter, Ralf U.
name: Soyer, Hans P.
name: Sepp, Norbert
name: Vogt, Thomas
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 610 Medizin

description: During the past several years, quantitative morphology has gained increasing attention in diagnostic pathology and in certain research applications. In the field of dermatopathology, quantitative morphology has been applied to numerous problems, ranging from the interactive measurement of nuclear contours to fully automated, high-resolution image analysis of ultrastructural micrographs. Dermatologic applications are reviewed, and potential developments in the future are briefly outlined.
Data Augmentation Techniques for Process Extraction from Scientific Publications
Creators: name: Susanti, Yuni
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: We present data augmentation techniques for process extraction tasks in scientific publications. We cast the process extraction task as a sequence labeling task where we identify all the entities in a sentence and label them according to their process-specific roles. The proposed method attempts to create meaningful augmented sentences by utilizing (1) process-specific information from the original sentence, (2) role label similarity, and (3) sentence similarity. We demonstrate that the proposed methods substantially improve the performance of the process extraction model trained on chemistry domain datasets, up to 12.3 points improvement in performance accuracy (F-score). The proposed methods could potentially reduce overfitting as well, especially when training on small datasets or in a low-resource setting such as in chemistry and other scientific domains.
Queen-queen competition by precocious male production in multiqueen ant colonies
Creators: name: Yamauchi, Katsusuke
name: Ishida, Yasuko
name: Hashim, Rosli
name: Heinze, Jürgen
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: EVO_ECOL
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)
subject: Animals
subject: Ants/physiology
subject: Competitive Behavior
subject: Female
subject: Hierarchy, Social
subject: Male
subject: Sex Ratio
subject: Sexual Behavior, Animal

description: Arriving earlier in the breeding area than his rivals may be beneficial for a male when females mate only once or during a short time span. The timing of a male's entrance is usually determined by the male himself, e.g., through returning early from his winter quarters or through accelerated larval development . Here, we document a surprisingly simple way of "first come, first served" in a species with local mate competition. In multiqueen colonies of a Cardiocondyla ant, mother queens make sure that their own sons are the first to monopolize mating with a large harem of female sexuals by producing extremely long-lived males early in colony life. Whereas queens in newly founded single-queen colonies started to produce male and female sexuals only several weeks after the eclosion of their first worker offspring, queens in multiqueen colonies precociously reared sons long before the first female sexuals and even before the emergence of their first workers. These early males killed all later emerging males in the nest and mated with all female sexuals subsequently produced. Our data document that the patterns of growth and productivity of insect colonies are surprisingly flexible and can be turned upside down under appropriate selection pressures.
Genetic structure and reproductive strategy of the ant Cardiocondyla elegans: strictly monogynous nests invaded by unrelated sexuals
Creators: name: Lenoir, J.-C.
name: Schrempf, A.
name: Lenoir, A.
name: Heinze, J.
name: Mercier, J.-L.
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Cardiocondyla; multiple mating; colony genetic structure; ergatoid males; inbreeding; intranidal mating
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)
subject: Animals
subject: Ants/genetics
subject: Female
subject: France
subject: Genetics, Population
subject: Male
subject: Microsatellite Repeats/genetics
subject: Nesting Behavior/physiology
subject: Observation
subject: Polymerase Chain Reaction
subject: Reproduction/physiology
subject: Sexual Behavior, Animal/physiology
subject: Spermatozoa/chemistry

description: Cardiocondyla elegans is a Mediterranean ant that nests on river banks. It rears only wingless (ergatoid) males that live peacefully in the same nest as opposed to other species of the same genus, which have both peaceful, winged and mutually aggressive 'ergatoid' males. Using microsatellite analysis, we investigated the genetic structure of 21 colonies from three different locations as well as the parentage of sexuals of two colonies of C. elegans. We show that C. elegans is strictly monogynous, and that its nests can contain foreign sexuals. The presence of alien sexuals inside ant nests is described for the first time and probably counteracts inbreeding resulting from matings between siblings. In the laboratory, aggression tests showed that workers only allow alien males to enter their nests, while all winged female sexuals attempting to enter were attacked. Nevertheless, the presence of alien female sexuals in nests in the field seems to result from active carrying behaviour by workers during the reproductive period.
Clonal reproduction and genetic caste differences in a queen-polymorphic ant, Vollenhovia emeryi
Creators: name: Ohkawara, Kyohsuke
name: Nakayama, Megumi
name: Satoh, Atsumi
name: Trindl, Andreas
name: Heinze, Jürgen
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: ant; caste; genetic; parthenogenesis; Vollenhovia
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)
subject: Alleles
subject: Animals
subject: Ants/genetics
subject: Female
subject: Gene Frequency
subject: Genotype
subject: Heterozygote
subject: Homozygote
subject: Male
subject: Microsatellite Repeats
subject: Reproduction/physiology
subject: Sex Determination (Genetics)
subject: Sex Ratio
subject: Social Behavior

description: Most social Hymenoptera are characterized by simple haploid sex determination and environment-based caste differentiation. This appears to be strikingly different in the queen-polymorphic ant Vollenhovia emeryi. Almost all long- and short-winged queens from a population in Central Japan were homozygous at three microsatellite loci, whereas workers were mostly heterozygous, suggesting either a complex system of genetic caste determination or, more likely, the production of female sexuals from unfertilized eggs by thelytokous parthenogenesis and of workers from fertilized eggs. Furthermore, male genotypes were not compatible with those of the queens and had exclusively the paternal allele found in the sterile, heterozygous workers, probably because males are produced from fertilized eggs after the exclusion of maternal nuclear DNA as recently reported for Wasmannia auropunctata. The genus Vollenhovia might provide an interesting model system to trace the evolution of unusual caste and sex determination systems.
Cartarea vegetației forestiere din vestul podișului Târnavelor
Creators: name: Sancu, Darius
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Forestry
subject: Biodiversity conservation

description: Lucrarea analizează vegetația forestieră din bazinul văii Biertan, situată în situl Natura 2000 "Sighișoara-Târnava Mare" (ROSCI0227). Studiul are ca obiectiv inventarierea și descrierea vegetației forestiere, cartarea habitatelor și analiza comparativă a asociațiilor vegetale. Cercetarea se bazează pe fitogeografia regiunii, utilizând metoda releveului prin colectarea datelor.
Experimental determination of the low-lying excited A states of trans-stilbene
Creators: name: Hohlneicher, Georg
name: Dick, Bernhard
Publisher: name: Universität Regensburg
Year: 1984
Subjects: subject: Luminescence; Ultraviolet and visible spectra (two-photon, of stilbene); energy level stilbene; two photon excitation spectra stilbene; UV two photon stilbene
subject: 540 Chemie

description: The low-lying A states of trans-stilbene are investigated by means of two-photon excitation spectroscopy. The exptl. findings are compared with theor. results. From the combined information of one- and two-photon spectroscopy, were assigned at least seven excited singlet states in the energy range below 50,000 cm-1. The newly obtained information is discussed with regard to the mechanism proposed for the photoisomerization of stilbene.
description: CAN 102:5541 22-9 Physical Organic Chemistry 103-30-0 Role: PRP (Properties) (2-photon excitation spectrum of)
Generalized Geologic Map for Land-Use Planning: Breathitt County, Kentucky
Creators: name: Carey, Daniel I.
name: Sloan, Sally
Publisher: name: Kentucky Geological Survey, University of Kentucky
Year: 2007

description: Abstract:
This map is not intended to be used for selecting individual sites. Its purpose is to inform land-use planners, government officials, and the public in a general way about geologic bedrock conditions that affect the selection of sites for various purposes. The properties of thick soils may supercede those of the underlying bedrock and should be considered on a site-to-site basis. At any site, it is important to understand the characteristics of both the soils and the underlying rock.
Planetesimal and Protoplanet Dynamics in a Turbulent Protoplanetary Disk: Ideal Stratified Disks
Creators: name: Yang, Chao-Chin
name: Mac Low, Mordecai-Mark
name: Menou, Kristen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Due to the gravitational influence of density fluctuations driven by magneto-rotational instability in the gas disk, planetesimals and protoplanets undergo diffusive radial migration as well as changes in other orbital properties. The magnitude of the effect on particle orbits can have important consequences for planet formation scenarios. We use the local-shearing-box approximation to simulate an ideal, isothermal, magnetized gas disk with vertical density stratification and simultaneously evolve numerous massless particles moving under the gravitational field of the gas and the host star. We measure the evolution of the particle orbital properties, including mean radius, eccentricity, inclination, and velocity dispersion, and its dependence on the disk properties and the particle initial conditions. Although the results converge with resolution for fixed box dimensions, we find the response of the particles to the gravity of the turbulent gas correlates with the horizontal box size, up to 16 disk scale heights. This correlation indicates that caution should be exercised when interpreting local-shearing-box models involving gravitational physics of magneto-rotational turbulence. Based on heuristic arguments, nevertheless, the criterion L_h / R ~ O(1), where L_h is the horizontal box size and R is the distance to the host star, is proposed to possibly circumvent this conundrum. If this criterion holds, we can still conclude that magneto-rotational turbulence seems likely to be ineffective at driving either diffusive migration or collisional erosion under most circumstances.
description: Accepted to ApJ. Major expansion in Secs. 2.1 & 2.2 and new Sec. 4.5
Quasiparticle scattering from vortices in d-wave superconductors I: Superflow contribution
Creators: name: Kulkarni, M.
name: Ganeshan, Sriram
name: Durst, A. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In the vortex state of a d-wave superconductor, massless Dirac quasiparticles are scattered from magnetic vortices via a combination of two basic mechanisms: effective potential scattering due to the superflow swirling about the vortices and Aharonov-Bohm scattering due to the Berry phase acquired by a quasiparticle upon circling a vortex. In this paper, we study the superflow contribution by calculating the differential cross section for a quasiparticle scattering from the effective non-central potential of a single vortex. We solve the massless Dirac equation in polar coordinates and obtain the cross section via a partial wave analysis. We also present a more transparent Born-limit calculation and in this approximation we provide an analytic expression for the differential cross section. The Berry phase contribution to the quasiparticle scattering is considered in a separate paper.
description: 22 pages, 6 figures
A universality result for endomorphism monoids of some ultrahomogeneous structures
Creators: name: Dolinka, Igor
name: Mašulović, Dragan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: Primary 20M20, Secondary 03C15, 08A35, 18A30, 20M50

description: We devise a fairly general sufficient condition ensuring that the endomorphism monoid of a countably infinite ultrahomogeneous structure (i.e. a Fra\"ıssé limit) embeds all countable semigroups. This approach provides us not only with a framework unifying the previous scattered results in this vein, but actually yields new applications for endomorphism monoids of the (rational) Urysohn space and the countable universal ultrahomogeneous semilattice.
description: 20 pages; to appear in the Proceedings of the Edinburgh Mathematical Society
"Desambiguando" el género: cómo obtener género de nombres de manera sistemática, gratuita y consciente
Creators: name: González-Salmón, Elvira
Publisher: name: Zenodo
Year: 2023
Subjects: Bibliometrics
Gender identification
Gender assignation
Gender estimation

description: Los estudios cuantitativos nos permiten sacar muchas conclusiones y observar diferentes patrones y tendencias. Una variable a tener en cuenta en esta clase de estudios, de extremada importancia en las ciencias sociales actualmente, es la de género. Sin embargo, esta información no siempre está disponible y, si trabajamos con una gran cantidad de datos, muchas veces no se puede obtener de manera manual. Por tanto, hay que buscar una manera alternativa de obtenerla. En este curso veremos cómo obtener de manera sistemática y gratuita el género de las personas a partir de su nombre y/o apellidos. Analizaremos los pros y contras de diversas metodologías, el estado del arte de la desambiguación de género y otros elementos a tener en cuenta si pretendemos obtener el género de personas de esta manera.
Picosecond spectroscopy of electronically excited singlet states in biphenylene
Creators: name: Elsaesser, T.
name: Laermer, F.
name: Kaiser, W.
name: Dick, Bernhard
name: Niemeyer, M.
name: Luettke, W.
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: Energy level (excited singlet states, in biphenylene); Fluorescence (of biphenylene excited singlet states); Optical absorption (picosecond, of biphenylene excited singlet states); singlet state biphenylene fluorescence
subject: 540 Chemie

description: A photophys. properties of biphenylene-h8 and biphenylene-d8 in soln. at room temp. was investigated with picosecond absorption and fluorescence spectroscopy. The weak fluorescence with complex vibrational structure originates entirely from the S1 state. It decays monoexponentially with a lifetime of 240 +- 20 ps. Upon photoexcitation to S2 no emission attributable to the S2 state was obsd. Lifetime and quantum yield of fluorescence (FF = 2.3 * 10-4) are the same for biphenylene-h8 and for the completely deuterated compd., indicating the C-H vibrations are not involved in the major radiationless decay process of the S1 level, i.e. internal conversion (jIC > 0.99). This conclusion is supported by INDO/S CI calcns. where strong changes of the CC bond orders (particularly in the central C4 ring) with S0 -> S1 excitation are found. The time-resolved excited-state absorption, measured at several wavelengths, decays biexponentially with time consts. of 8 +- 3 and 250 +- 40 ps. Various interpretations of the 8 ps lifetime are discussed; the conclusion results that the 8 ps transient has to be assigned to the lifetime of the S2 state even though the emission expected for an allowed transition with such a long lifetime is not obsd. Strong S1 -> Sn and S2 -> Sn excited-state absorption is found as predicted by INDO/S calcns.
description: CAN 110:15430 73-5 Optical, Electron, and Mass Spectroscopy and Other Related Properties 259-79-0 (Biphenylene); 19136-75-5 (Biphenylene-d8) Role: PRP (Properties) (photophys. properties of)
Gravitational Waves in Braneworld Scenarios with AdS Background
Creators: name: de Faria, A. C. Amaro
name: da Rocha, Roldao
name: Alves, M. E. S.
name: de Araujo, J. C. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we investigate gravitational waves as metric perturbations around a general warped 5-dimensional background. We find an analytical solution in Randall-Sundrum braneworld model and analyze the implications of braneworld models in the gravitational waves propagation.
description: 5 pages, RevTeX, a paragraph added
Excited singlet states of "hairpin" polyenes
Creators: name: Froelich, Wolfgang
name: Dewey, Harry J.
name: Deger, Hans
name: Dick, Bernhard
name: Klingensmith, Kenneth A.
name: Puettmann, Wilhelm
name: Vogel, Emanuel
name: Hohlneicher, Georg
name: Michl, Josef
Publisher: name: Universität Regensburg
Year: 1983
Subjects: subject: Electron configuration; Fluorescence; Magnetic circular dichroism; Ultraviolet and visible spectra (of hairpin polyenes); Molecular orbital (PPP-CI, of hairpin polyenes); Energy level excitation (singlet, of hairpin polyenes); polyene hairpin UV fluorescence; excited singlet hairpin polyene; electron configuration hairpin polyene; MO hairpin polyene
subject: 540 Chemie

description: The synthesis and UV-visible, polarized-fluorescence and MCD spectra of 6 U-shaped hairpin polyenes (e.g., I) are reported. Qual. arguments and results of p-electron calcns. permit the identification of 4 excited singlet states and their assignment to mixts. of singly and doubly excited configurations. The hairpin polyenes represent a link between the all-trans-polyenes on the 1 hand and the annulenes and acenes on the other; they have the topol. of the former and a geometry near that of the latter.
description: CAN 99:139187 22-9 Physical Organic Chemistry 1070-89-9 Role: PRP (Properties) (Wittig reaction of methyltriphenylphosphonium bromide with diformylcycloheptatriene in presence of); 1779-49-3 Role: RCT (Reactant), RACT (Reactant or reagent) (Wittig reaction of, with sodium bis(trimethylsilyl)amide and diformylcycloheptatriene); 55759-42-7 Role: RCT (Reactant), RACT (Reactant or reagent) (Wittig reactions of, divinylbicyclododecapentaene and tricycloheptadecaheptaene from); 60237-65-2 Role: RCT (Reactant), RACT (Reactant or reagent) (Wittig reactions of, divinyltricycloheptadecaheptaene and tetracyclodocosanonaene from); 4692-14-2P; 50785-96-1P; 68539-85-5P; 86846-94-8P; 86846-95-9P; 86846-96-0P Role: SPN (Synthetic preparation), PREP (Preparation) (prepn. and excited singlet states of); 7333-67-7 Role: RCT (Reactant), RACT (Reactant or reagent) (reaction of, with butyllithium and diformylcycloheptatriene); 28172-94-3 Role: PRP (Properties) (treatment with methyltriphenylphosphonium bromide and sodium bis(trimethylsilyl)amide, divinylcycloheptatriene from)
How are changing environmental conditions affecting barren ground caribou movement and habitat use in Canada’s north?
Creators: name: Rickbeil, Gregory James Melville
Publisher: name: University of British Columbia
Year: 2017

description: The Arctic is currently experiencing some of the most dramatic warming effects globally due to climate change. Barren ground caribou (Rangifer tarandus groenlandicus) herds in Canada’s north are particularly susceptible to climate change as they occupy Arctic and sub-Arctic environments and as grazers respond directly to changing vegetation conditions. Examining the associations between barren ground caribou and their environment across their entire range presents specific and substantial challenges. Large herd ranges make in-situ habitat monitoring studies difficult and expensive. Additionally, the environments barren ground caribou inhabit are extremely remote and not spatially consistent between years. As such, new techniques are required that address the large scale, remote, and temporally variable nature of these animals. Within this PhD Dissertation, I integrate newly developed remotely sensed environmental data sets with multiple caribou data sets to explore how changing environmental conditions are affecting barren-ground caribou movement and habitat use in Canada’s north. Barren ground caribou’s effects on summer range productivity were assessed to explore top down controls on vegetation productivity. Based on my results, I argue that while there is some association between barren ground caribou density and future summer range vegetation productivity, it is unlikely that range degradation is a major cause of herd declines in the herds examined here. Habitat conditions (vegetation productivity, lichen mat condition, and fire disturbance) were documented across herd ranges to assess how barren ground caribou habitat is changing through time. These habitat conditions were then linked to movement metrics derived from barren ground caribou telemetry data to assess how changing habitat conditions are affecting caribou movement patterns. I found widespread, rapid changes in barren ground caribou habitat in line with predicted and documented climate change effects in the Arctic, and I detected significant alterations in movement metrics associated with these changes in habitat. In all cases, remotely sensed environmental indicators were useful for describing aspects of barren ground caribou habitat. I was able to link habitat conditions to barren ground caribou at both the individual and herd levels and described novel linkages between barren ground caribou and their environment.
GÊNESE DO "HISTORICAMENTE DETERMINADO" NO PENSAMENTO DE POSTONE.
Creators: name: Koch, Peter Frank Alvarenga
Publisher: name: Zenodo
Year: 2022
Subjects: Moishe Postone, genesis of thought, Marxist critique, antisemitism, Nazism, Holocaust, Capital, Historical specificity, historically determine, commodity, abstract labor.

description: Moishe Postone is responsible for an intriguing Marxist critique of dominant
 interpretations in the field of Marxism. This dissertation is dedicated to discussing
 Postone's contribution. We will argue, in particular, that Postone's emphasis on the
 historically specific character arises from his important analysis of antisemitism and
 Nazism. The first part of this dissertation is devoted to presenting this analysis,
 emphasizing the limits identified by Postone in the reactions to the "Holocaust" after
 the defeat of fascism. We show how Postone's characteristic arguments first appear in
 this discussion. In the second part of this dissertation, we will demonstrate how
 Postone reinterprets Capital with an "emphasis on the historically specific," highlighting
 the importance of historical determination in the reading of Capital. In section 2.1, we
 address the ramifications of the commodity in Capital for a better understanding of
 Postone's critique. In the final section, we provide an initial analysis of chapter four,
 "Abstract Labor," which highlights the importance of the historically determined in the
 face of the trans-historicity of labor.

description: {"references": ["Marx, K. (2010). Sobre a quest\u00e3o judaica. (N. Schneider, D. Bensa\u00efd, & W. C. Brant, Trads.) S\u00e3o Paulo: Boitempo", "Marx, K. (2011). Grundrisse : manuscritos econ\u00f4micos de 1857-1858 . S\u00e3o Paulo: Boitempo.", "Luk\u00e1cs, G. (2013). Para uma ontologia do ser social II. S\u00e3o Paulo: Boitempo.", "Postone, M. (1980). Anti-Semitism and National Socialism: Notes on the German Reaction to \"Holocaust\". Duke University Press, 97-115. doi:https://doi.org/10.2307/487974", "Postone, M. (2014). Tempo, trabalho e domina\u00e7\u00e3o social: uma reinterpreta\u00e7\u00e3o da teoria cr\u00edtica de Marx. S\u00e3o Paulo: Boitempo", "Duayer, M., & Ara\u00fajo, P. H. (2020). Valor como forma de media\u00e7\u00e3o social: Interpreta\u00e7\u00e3o de Marx a partir de Postone. Sociedade Brasileira de Economia Pol\u00edtica, 46-82."]}
Reciprocal and nonreciprocal paraconductivity in bilayer multiphase superconductors
Creators: name: Matsumoto, Tsugumi
name: Yanase, Youichi
name: Daido, Akito
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Thin-film multiphase superconductors are attracting much attention, and it is important to propose how to detect them in experiments. In this work, we study the reciprocal and nonreciprocal paraconductivity of a bilayer model with staggered Rashba-type spin-orbit coupling with and without the potential gradient and Zeeman field. This model shows the Bardeen-Cooper-Schrieffer phase, the pair-density-wave phase, and the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase, and we focus on how their properties are encoded to the charge transport. We show that the reciprocal paraconductivity has a peak associated with the phase transitions between different superconducting states due to the degeneracy of the transition temperatures as well as the paramagnetic depairing effect. We also show that the FFLO superconducting state shows a sizable nonreciprocal paraconductivity once the degeneracy of Cooper pairs is lifted by applying the potential gradient. Observation of the peaked reciprocal and nonreciprocal paraconductivity can be used as a probe of multiphase superconductivity.
description: 17 pages, 11 figures
Exact spin-spin correlation function for the zero-temperature random-field Ising model
Creators: name: Handford, T. P.
name: Perez-Reche, F. J.
name: Taraskin, S. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: An exact expression for the spin-spin correlation function is derived for the zero-temperature random-field Ising model defined on a Bethe lattice of arbitrary coordination number. The correlation length describing dynamic spin-spin correlations and separated from the intrinsic topological length scale of the Bethe lattice is shown to diverge as a power law at the critical point. The critical exponents governing the behaviour of the correlation length are consistent with the mean-field values found for a hypercubic lattice with dimension greater than the upper critical dimension.
description: 21 pages, 8 figures