cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stronger instruments via integer programming in an observational study of late preterm birth outcomes
Creators: name: Zubizarreta, José R.
name: Small, Dylan S.
name: Goyal, Neera K.
name: Lorch, Scott
name: Rosenbaum, Paul R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: In an optimal nonbipartite match, a single population is divided into matched pairs to minimize a total distance within matched pairs. Nonbipartite matching has been used to strengthen instrumental variables in observational studies of treatment effects, essentially by forming pairs that are similar in terms of covariates but very different in the strength of encouragement to accept the treatment. Optimal nonbipartite matching is typically done using network optimization techniques that can be quick, running in polynomial time, but these techniques limit the tools available for matching. Instead, we use integer programming techniques, thereby obtaining a wealth of new tools not previously available for nonbipartite matching, including fine and near-fine balance for several nominal variables, forced near balance on means and optimal subsetting. We illustrate the methods in our on-going study of outcomes of late-preterm births in California, that is, births of 34 to 36 weeks of gestation. Would lengthening the time in the hospital for such births reduce the frequency of rapid readmissions? A straightforward comparison of babies who stay for a shorter or longer time would be severely biased, because the principal reason for a long stay is some serious health problem. We need an instrument, something inconsequential and haphazard that encourages a shorter or a longer stay in the hospital. It turns out that babies born at certain times of day tend to stay overnight once with a shorter length of stay, whereas babies born at other times of day tend to stay overnight twice with a longer length of stay, and there is nothing particularly special about a baby who is born at 11:00 pm.
description: Published in at http://dx.doi.org/10.1214/12-AOAS582 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Correlates of current cigarette smoking among school-going adolescents in Punjab, India: results from the Global Youth Tobacco Survey 2003
Creators: name: Rudatsikira, Emmanuel
name: Siziya, Seter
name: Muula, Adamson S
Publisher: name: BioMed Central Ltd
Year: 2008

description: Abstract Background Smoking is a leading cause of morbidity and mortality globally. There is therefore need to identify relevant factors associated with smoking among adolescents in order to better tailor public health interventions aimed at preventing smoking. Methods We used data from the Global Youth Tobacco Survey (GYTS) conducted in 2003 in Punjab, India, on 2014 adolescents of whom 58.9% were males. We conducted a weighted logistic regression analysis, adjusting for age and sex, to determine associations between predictor variables and current tobacco smoking status. Results A total of 2014 adolescents participated in the survey in 2003, and of these 58.9% were males. Male respondents tended to be older than females (21.2% of males, and 13.1% of females were of age 16 years or above). The percent of males and females in the other age groups were: 23.0% and 28.6% for <14 years, 27.3% and 31.0% for 14 years, and 28.4% and 27.0% for 15 years, respectively. The following factors were positively associated with smoking: adolescents who received pocket money; adolescents who had parents who smoked, chewed or applied tobacco; adolescents who said that boys or girls who smoke or chew tobacco have more friends; adolescents who said that smoking or chewing tobacco makes boys look less attractive; adolescents who said that there is no difference in weight between smokers and non-smokers; adolescents who said that smoking makes one gain weight; and adolescents who had most or all of their closest friends who smoked. The factors that were negatively associated with smoking were: adolescents who said that boys or girls who smoke or chew tobacco have less number of friends; adolescents who said that girls who smoke or chew tobacco are less attractive; and adolescents who had some of their closest friends who smoked. Conclusion The observed associations between current smoking on one hand and peer smoking, and perception that boys who smoke are less attractive on the other, deserve further studies. The factors reported in the current study should be considered in the design of public health interventions aimed to reduce adolescent cigarette smoking.
Die Bedeutung von Bid für Apoptose und Proliferation in der murinen Leber
Creators: name: Schüngel, Sven
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Bid
subject: Apoptose-Resistenz
subject: MegaFasL
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
DSG 1970 Campaign Seminar: Tape No.2
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2020
Subjects: Public opinion polls
Elections--Press coverage
Advertising, Political
Political campaigns

description: 2A: Polls and Surveys/Media Campaigns: Peter Hart (Vice President, Oliver Quayle & Co.), Robert Squier (President, The Communications Co.). Polls: Timing, costs, Purposes, etc. Polls and media campaigns, TV commercials, spurt technique, image vs. issue commercials, timing and pacing commercials, issues in 1970. 2B: Radio-TV coverage: Lyle Stitt (Admin. Asst. to Rep. Obey of Wisconsin), Terry Bracy (Press Asst. to Rep. Udall of Arizona). Obtaining free media time, TV debates, news conferences, radio and TV commercials, Radio-TV staff, Radio Beepers, Relations with Newsmen.
Suitability of high-pressure xenon as scintillator for gamma ray spectroscopy
Creators: name: Resnati, F.
name: Gendotti, U.
name: Chandra, R.
name: Curioni, A.
name: Davatz, G.
name: Frederich, H.
name: Gendotti, A.
name: Goeltl, L.
name: Jebali, R.
name: Murer, D.
name: Rubbia, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this paper we report the experimental study of high-pressure xenon used as a scintillator, in the context of developing a gamma ray detector. We measure a light yield near 2 photoelectrons per keV for xenon at 40 bar. Together with the light yield, we also measured an energy resolution of ~9% (FWHM) at 662 keV, dominated by the statistical fluctuations in the number of photoelectrons.
description: 15 pages, 11 figures
How Do the Probabilities Arise in Quantum Measurement?
Creators: name: Bhaumik, Mani L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Popular Physics (physics.pop-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A satisfactory resolution of the persistent quantum measurement problem remains stubbornly unresolved in spite of an overabundance of efforts of many prominent scientists over the decades. Among others, one key element is considered yet to be resolved. It comprises of where the probabilities of the measurement outcome stem from. This article attempts to provide a plausible answer to this enigma, thus eventually making progress toward a cogent solution of the longstanding measurement problem.
description: 10 pages, 2 figures
The next generation of target capture technologies - large DNA fragment enrichment and sequencing determines regional genomic variation of high complexity
Creators: name: Mackiewicz, Kate
name: Rappaport, Eric
name: Sasson, Ariella
name: Monos, Dimitri
name: Kaestner, Klaus H
name: Dapprich, Johannes
name: Clark, Peter M
name: D’Arcy, Monica
name: Ferriola, Deborah
name: Gai, Xiaowu
name: Schug, Jonathan
Publisher: name: BioMed Central
Year: 2016

description: Abstract Background The ability to capture and sequence large contiguous DNA fragments represents a significant advancement towards the comprehensive characterization of complex genomic regions. While emerging sequencing platforms are capable of producing several kilobases-long reads, the fragment sizes generated by current DNA target enrichment technologies remain a limiting factor, producing DNA fragments generally shorter than 1 kbp. The DNA enrichment methodology described herein, Region-Specific Extraction (RSE), produces DNA segments in excess of 20 kbp in length. Coupling this enrichment method to appropriate sequencing platforms will significantly enhance the ability to generate complete and accurate sequence characterization of any genomic region without the need for reference-based assembly. Results RSE is a long-range DNA target capture methodology that relies on the specific hybridization of short (20-25 base) oligonucleotide primers to selected sequence motifs within the DNA target region. These capture primers are then enzymatically extended on the 3’-end, incorporating biotinylated nucleotides into the DNA. Streptavidin-coated beads are subsequently used to pull-down the original, long DNA template molecules via the newly synthesized, biotinylated DNA that is bound to them. We demonstrate the accuracy, simplicity and utility of the RSE method by capturing and sequencing a 4 Mbp stretch of the major histocompatibility complex (MHC). Our results show an average depth of coverage of 164X for the entire MHC. This depth of coverage contributes significantly to a 99.94 % total coverage of the targeted region and to an accuracy that is over 99.99 %. Conclusions RSE represents a cost-effective target enrichment method capable of producing sequencing templates in excess of 20 kbp in length. The utility of our method has been proven to generate superior coverage across the MHC as compared to other commercially available methodologies, with the added advantage of producing longer sequencing templates amenable to DNA sequencing on recently developed platforms. Although our demonstration of the method does not utilize these DNA sequencing platforms directly, our results indicate that the capture of long DNA fragments produce superior coverage of the targeted region.
The Higgs mode in a superfluid of Dirac fermions
Creators: name: Tsuchiya, Shunji
name: Ganesh, R.
name: Nikuni, Tetsuro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the Higgs amplitude mode in the s-wave superfluid state on the honeycomb lattice inspired by recent cold atom experiments. We consider the attractive Hubbard model and focus on the vicinity of a quantum phase transition between semi-metal and superfluid phases. On either side of the transition, we find collective mode excitations that are stable against decay into quasiparticle-pairs. In the semi-metal phase, the collective modes have "Cooperon" and exciton character. These modes smoothly evolve across the quantum phase transition, and become the Anderson-Bogoliubov mode and the Higgs mode of the superfluid phase. The collective modes are accommodated within a window in the quasiparticle-pair continuum, which arises as a consequence of the linear Dirac dispersion on the honeycomb lattice, and allows for sharp collective excitations. Bragg scattering can be used to measure these excitations in cold atom experiments, providing a rare example wherein collective modes can be tracked across a quantum phase transition.
description: 8 pages, 2 figures. Includes supplementary materials
The associations of birth intervals with small-for-gestational-age, preterm, and newborn and infant mortality: a meta-analysis
Creators: name: Victora, Cesar G
name: Kozuki, Naoko
name: Lee, Anne CC
name: Adair, Linda
name: Katz, Joanne
name: Ntozini, Robert
name: Humphrey, Jean
name: Child Health Epidemiology Reference Group Small-for-Gestational-Age-Preterm Birth Working Group
name: Black, Robert E
name: Silveira, Mariangela F
Publisher: name: BioMed Central Ltd
Year: 2013

description: Abstract Background Short and long birth intervals have previously been linked to adverse neonatal outcomes. However, much of the existing literature uses cross-sectional studies, from which deriving causal inference is complex. We examine the association between short/long birth intervals and adverse neonatal outcomes by calculating and meta-analyzing associations using original data from cohort studies conducted in low-and middle-income countries (LMIC). Methods We identified five cohort studies. Adjusted odds ratios (aOR) were calculated for each study, with birth interval as the exposure and small-for-gestational-age (SGA) and/or preterm birth, and neonatal and infant mortality as outcomes. The associations were controlled for potential confounders and meta-analyzed. Results Birth interval of shorter than 18 months had statistically significant increased odds of SGA (pooled aOR: 1.51, 95% CI: 1.31-1.75), preterm (pooled aOR: 1.58, 95% CI: 1.19-2.10) and infant mortality (pooled aOR: 1.83, 95% CI: 1.19-2.81) after controlling for potential confounding factors (reference 36-<60 months). It was also significantly associated with term-SGA, preterm-appropriate-for-gestational-age, and preterm-SGA. Birth interval over 60 months had increased risk of SGA (pooled aOR: 1.22, 95% CI: 1.07-1.39) and term-SGA (pooled aOR: 1.14, 95% CI: 1.03-1.27), but was not associated with other outcomes. Conclusions Birth intervals shorter than 18 months are significantly associated with SGA, preterm birth and death in the first year of life. Lack of access to family planning interventions thus contributes to the burden of adverse birth outcomes and infant mortality in LMICs. Programs and policies must assess ways to provide equitable access to reproductive health interventions to mothers before or soon after delivering a child, but also address underlying socioeconomic factors that may modify and worsen the effect of short intervals.
Fine-scale structure of the quasar 3C 279 Measured with 1.3 mm very long baseline interferometry
Creators: name: Lu, Ru-Sen
name: Fish, Vincent L.
name: Akiyama, Kazunori
name: Doeleman, Sheperd S.
name: Algaba, Juan C.
name: Bower, Geoffrey C.
name: Brinkerink, Christiaan
name: Chamberlin, Richard
name: Crew, Geoffrey
name: Cappallo, Roger J.
name: Dexter, Matt
name: Freund, Robert
name: Friberg, Per
name: Gurwell, Mark A.
name: Ho, Paul T. P.
name: Honma, Mareki
name: Inoue, Makoto
name: Jorstad, Svetlana G.
name: Krichbaum, Thomas P.
name: Loinard, Laurent
name: MacMahon, David
name: Marrone, Daniel P.
name: Marscher, Alan P.
name: Moran, James M.
name: Plambeck, Richard
name: Pradel, Nicolas
name: Primiani, Rurik
name: Tilanus, Remo P. J.
name: Titus, Michael
name: Weintroub, Jonathan
name: Wright, Melvyn
name: Young, Ken H.
name: Ziurys, Lucy M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report results from 5-day VLBI observations of the well-known quasar 3C 279 at 1.3 mm (230 GHz) in 2011. The measured nonzero closure phases on triangles including stations in Arizona, California and Hawaii indicate that the source structure is spatially resolved. We find an unusual inner jet direction at scales of $\sim$1 parsec extending along the northwest-southeast direction (PA = $127^{\circ}\pm3^{\circ}$), as opposed to other (previously) reported measurements on scales of a few parsecs showing inner jet direction extending to the southwest. The 1.3 mm structure corresponds closely with that observed in the central region of quasi-simultaneous super-resolution VLBA images at 7 mm. The closure phase changed significantly on the last day when compared with the rest of observations, indicating that the inner jet structure may be variable on daily timescales. The observed new direction of the inner jet shows inconsistency with the prediction of a class of jet precession models. Our observations indicate a brightness temperature of $\sim 8\times10^{10}$ K in the 1.3 mm core, much lower than that at centimeter wavelengths. Observations with better uv coverage and sensitivity in the coming years will allow the discrimination between different structure models and will provide direct images of the inner regions of the jet with 20--30 $μ$as (5--7 light months) resolution.
description: Accepted to ApJ
The squeezed light source for the advanced virgo detector in the observation run O3
Creators: name: Mehmet, Moritz
name: Vahlbruch, Henning
Publisher: name: Basel : Molecular Diversity Preservation International (MDPI)
Year: 2020
Subjects: subject: advanced virgo gravitational wave detector
subject: non-classical light
subject: quantum noise
subject: scientific run O3
subject: squeezed vacuum states of light
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie

description: From 1 April 2019 to 27 March 2020, the Advanced Virgo detector, together with the two Advanced LIGO detectors, conducted the third joint scientific observation run O3, aiming for further detections of gravitational wave signals from astrophysical sources. One of the upgrades to the Virgo detector for O3 was the implementation of the squeezed light technology to improve the detector sensitivity beyond its classical quantum shot noise limit. In this paper, we present a detailed description of the optical setup and performance of the employed squeezed light source. The squeezer was constructed as an independent, stand-alone sub-system operated in air. The generated squeezed states are tailored to exhibit high purity at intermediate squeezing levels in order to significantly reduce the interferometer shot noise level while keeping the correlated enhancement of quantum radiation pressure noise just below the actual remaining technical noise in the Advanced Virgo detector.
Towards reduction or substitution of cytotoxic dmso in biobanking of functional bioengineered megakaryocytes
Creators: name: Pogozhykh, Denys
name: Eicke, Dorothee
name: Gryshkov, Oleksandr
name: Wolkers, Willem F.
name: Schulze, Kai
name: Guzmán, Carlos A.
name: Blasczyk, Rainer
name: Figueiredo, Constança
Publisher: name: Basel : Molecular Diversity Preservation International (MDPI)
Year: 2020
Subjects: subject: biobanking
subject: cytotoxicity
subject: dimethyl sulfoxide
subject: ethylene glycol
subject: induced pluripotent stem cells (iPSC)
subject: megakaryocytes
subject: mouse model
subject: platelets
subject: propane-1,2-diol
subject: transfusion
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Donor platelet transfusion is currently the only efficient treatment of life-threatening thrombocytopenia, but it is highly challenged by immunological, quality, and contamination issues, as well as short shelf life of the donor material. Ex vivo produced megakaryocytes and platelets represent a promising alternative strategy to the conventional platelet transfusion. However, practical implementation of such strategy demands availability of reliable biobanking techniques, which would permit eliminating continuous cell culture maintenance, ensure time for quality testing, enable stock management and logistics, as well as availability in a ready-to-use manner. At the same time, protocols applying DMSO-based cryopreservation media were associated with increased risks of adverse long-term side effects after patient use. Here, we show the possibility to develop cryopreservation techniques for iPSC-derived megakaryocytes under defined xeno-free conditions with significant reduction or complete elimination of DMSO. Comprehensive phenotypic and functional in vitro characterization of megakaryocytes has been performed before and after cryopreservation. Megakaryocytes cryopreserved DMSO-free, or using low DMSO concentrations, showed the capability to produce platelets in vivo after transfusion in a mouse model. These findings propose biobanking approaches essential for development of megakaryocyte-based replacement and regenerative therapies. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
RecipeMind: Guiding Ingredient Choices from Food Pairing to Recipe Completion using Cascaded Set Transformer
Creators: name: Gim, Mogan
name: Choi, Donghee
name: Maruyama, Kana
name: Choi, Jihun
name: Kim, Hajung
name: Park, Donghyeon
name: Kang, Jaewoo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We propose a computational approach for recipe ideation, a downstream task that helps users select and gather ingredients for creating dishes. To perform this task, we developed RecipeMind, a food affinity score prediction model that quantifies the suitability of adding an ingredient to set of other ingredients. We constructed a large-scale dataset containing ingredient co-occurrence based scores to train and evaluate RecipeMind on food affinity score prediction. Deployed in recipe ideation, RecipeMind helps the user expand an initial set of ingredients by suggesting additional ingredients. Experiments and qualitative analysis show RecipeMind's potential in fulfilling its assistive role in cuisine domain.
description: Accepted and to be appeared in CIKM-2022
Borders, policies and illusions: Essays on the political economy of federalism and trade
Creators: name: Hoffstadt, Martin
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: Borders
subject: Federalism
subject: Decentralisation
subject: Communal border reforms
subject: Communal mergers
subject: Antidumping
subject: Cartel
subject: Trade
subject: International Trade
subject: Yugoslavia
subject: Serbia
subject: Croatia
subject: Slovenia
subject: Bosnia-Herzegovina
subject: Montenegro
subject: Macedonia
subject: Worker's self-management
subject: Political Economy
subject: Grenzen
subject: Föderalismus
subject: Dezentralisierung
subject: Gemeindereformen
subject: Gebietsreformen
subject: Kartell
subject: Handel
subject: Internationaler Handel
subject: Jugoslawien
subject: Serbien
subject: Kroatien
subject: Slowenien
subject: Bosnien-Herzegowina
subject: Mazedonien
subject: Arbeiterselbstverwaltung
subject: Politische Ökonomie
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::320 | Politik

description: This PhD thesis studies the implications of local governance, decentralisation and regional autonomy under federalism. Furthermore, it contributes to the trade literature by bringing together the largely separated research on cartel behaviour and anti-dumping policy. More explicitly, this thesis identifies empirically that the implementation of communal mergers, regional autonomy and anti-dumping policy leads to unexpected outcomes. Chapter 2 and Chapter 3 use the Socialist Federal Republic of Yugoslavia between 1945-1991 as a case to study the local implications of communal mergers and of the decentralisation of government functions. Chapter 4 combines the largest databases on anti-dumping and antitrust cases to study the relationship of global cartels and anti-dumping laws. In response to policy-makers, this thesis argues that it is an illusion to expect that communal mergers only improve governance efficiency, that it is an illusion to expect federalism to more accurately reflect preferences of local populations, and that it is an illusion to expect that anti-dumping policy only protects competitive markets.
The host-galaxy response to the afterglow of GRB 100901A
Creators: name: Hartoog, Olga E.
name: Wiersema, Klaas
name: Vreeswijk, Paul M.
name: Kaper, Lex
name: Tanvir, Nial R.
name: Savaglio, Sandra
name: Berger, Edo
name: Chornock, Ryan
name: Covino, Stefano
name: D'Elia, Valerio
name: Flores, Hector
name: Fynbo, Johan P. U.
name: Goldoni, Paolo
name: Gomboc, Andreja
name: Melandri, Andrea
name: Pozanenko, Alexei
name: Schaye, Joop
name: Postigo, Antonio de Ugarte
name: Wijers, Ralph A. M. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: For Gamma-Ray Burst 100901A, we have obtained Gemini-North and Very Large Telescope optical afterglow spectra at four epochs: one hour, one day, three days and one week after the burst, thanks to the afterglow remaining unusually bright at late times. Apart from a wealth of metal resonance lines, we also detect lines arising from fine-structure levels of the ground state of Fe II, and from metastable levels of Fe II and Ni II at the host redshift (z = 1.4084). These lines are found to vary significantly in time. The combination of the data and modelling results shows that we detect the fall of the Ni II 4 F9/2 metastable level population, which to date has not been observed. Assuming that the population of the excited states is due to the UV-radiation of the afterglow, we estimate an absorber distance of a few hundred pc. This appears to be a typical value when compared to similar studies. We detect two intervening absorbers (z = 1.3147, 1.3179). Despite the wide temporal range of the data, we do not see significant variation in the absorption lines of these two intervening systems.
description: 17 pages, 9 figures. Accepted by Monthly Notices of the Royal Astronomical Society on Jan 11th 2013
Nonlinear effects in Thomas precession due to the interplay of Lorentz contraction and Thomas--Wigner rotation
Creators: name: Di Lorenzo, Antonio
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: It is demonstrated that the 3--vector $\bs{S}$ currently associated to the spin in an inertial frame does not contract, but rather dilates, in the direction of the velocity. The correct vector $\bs{T}$ is individuated. The equation of motion for the two vectors is shown to contain two terms, a common linear rotation, identified with Thomas precession, and also a nonlinear rotation depending on the direction of the spin itself.
description: 42 pages, 10 figures
Multidimensional User Data Model for Web Personalization
Creators: name: Anil, Nithin K.
name: Kurian, Sharath Basil
name: T, Aby Abahai
name: Varghese, Surekha Mariam
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences
subject: H.3.3; H.3.4
subject: 68U35, 68N99, 68T01

description: Personalization is being applied to great extend in many systems. This paper presents a multi-dimensional user data model and its application in web search. Online and Offline activities of the user are tracked for creating the user model. The main phases are identification of relevant documents and the representation of relevance and similarity of the documents. The concepts Keywords, Topics, URLs and clusters are used in the implementation. The algorithms for profiling, grading and clustering the concepts in the user model and algorithm for determining the personalized search results by re-ranking the results in a search bank are presented in this paper. Simple experiments for evaluation of the model and their results are described.
description: 6 pages, 3 figures -"Published with International Journal of Computer Applications (IJCA)"
The construction problem for Hodge numbers modulo an integer in positive characteristic
Creators: name: Van Dobben De Bruyn, Remy
name: Paulsen, Matthias
Publisher: name: Cambridge [u.a.] : Cambridge University Press
Year: 2020
Subjects: subject: Primary: 14F99 None of the above, but in this section
subject: 14G17 Positive characteristic ground fields in algebraic geometry
subject: 14A10 Varieties and morphisms
subject: 14E99 None of the above, but in this section
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: Let k be an algebraically closed field of positive characteristic. For any integer 5 ≥ 2, we show that the Hodge numbers of a smooth projective k-variety can take on any combination of values modulo m, subject only to Serre duality. In particular, there are no non-trivial polynomial relations between the Hodge numbers.
title: Axel Lungershausen, Buntmetallfunde und Handwerksrelikte des Mittelalters und der frühen Neuzeit aus archäologischen Untersuchungen in Braunschweig
Creators: name: Steinbring, Bernd
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Axel Lungershausen, Buntmetallfunde und Handwerksrelikte des Mittelalters und der frühen Neuzeit aus archäologischen Untersuchungen in Braunschweig. Materialhefte zur Ur- und Frühgeschichte Niedersachsens Band 34. Verlag Marie Leidorf, Rahden/Westfalen 2004. 352 Seiten mit 52 Schwarzweiß-Tafeln.
Transition from the self-organized to the driven dynamical clusters
Creators: name: Singh, Aradhana
name: Jalan, Sarika
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study the mechanism of formation of synchronized clusters in coupled maps on networks with various connection architectures. The nodes in a cluster are self- synchronized or driven-synchronized, based on the coupling strength and underlying network structures. A smaller coupling strength region shows driven clusters independent of the network rewiring strategies, whereas a larger coupling strength region shows the transition from the self-organized cluster to the driven cluster as network connections are rewired to the bi-partite type. Lyapunov function analysis is performed to understand the dynamical origin of cluster formation. The results provide insights into the relationship between the topological clusters which are based on the direct connections between the nodes, and the dynamical clusters which are based on the functional behavior of these nodes.
description: 18 pages, 7 figures
Tunneling Current Spectra of a Metal Core/Semiconductor Shell Quantum Dot Molecule
Creators: name: Kuo, David M. -T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The transport properties of a metal core/semiconductor shell quantum dot molecule (QDM) embedded in a matrix connected to metallic electrodes are theoretically studied in the framework of Keldysh Green function technique. The effects of the electron plasmon interactions (EPIs) on the tunneling current spectra of QDM are examined. The energy levels of the QDs, intradot and interdot Coulomb interactions, electron interdot hopping strengths, and tunneling rates of QDs are renormalized by the EPIs. The differential conductance spectra show peaks arising from the plasmon assisted tunneling process, intradot and interdot Coulomb interactions, and coherent tunneling between the QDs.
description: 4 pages, 4 figures
Virtual Equivariant Grothendieck-Riemann-Roch Formula
Creators: name: Ravi, Charanya
name: Sreedhar, Bhamidi
Publisher: name: Deutsche Mathematiker-Vereinigung
Year: 2021

description: For a $G$-scheme $X$ with a given equivariant perfect obstruction theory, we prove a virtual equivariant Grothendieck-Riemann-Roch formula, this is an extension of a result of Fantechi-G\"{o}ttsche [Barbara Fantechi and Lothar G\"{o}ttsche, Riemann-Roch theorems and elliptic genus for virtually smooth schemes, Geom. Topol. 14 (2010), no. 1, 83-115] to the equivariant context. We also prove a virtual non-abelian localization theorem for schemes over $\mathbb C$ with proper actions.
description: DOCUMENTA MATHEMATICA, Vol 26 (2021), p. 2061-2094
Antismoking messages and current cigarette smoking status in Somaliland: results from the Global Youth Tobacco Survey 2004
Creators: name: Rudatsikira, Emmanuel
name: Siziya, Seter
name: Muula, Adamson S
Publisher: name: BioMed Central Ltd
Year: 2008

description: Abstract Background Tobacco is a leading cause of death globally. There are limited reports on current cigarette smoking prevalence and its associated-antismoking messages among adolescents in conflict zones of the world. We, therefore, conducted secondary analysis of data to estimate the prevalence of current cigarette smoking, and to determine associations of antismoking messages with smoking status. Methods We used data from the Somaliland Global Youth Tobacco Survey (GYTS) of 2004 to estimate the prevalence of smoking. We also assessed whether being exposed to anti-smoking media, education and having discussed with family members on the harmful effects of smoking were associated with smoking. Logistic regression analysis was used to assess these associations. Current smoking was defined as having reported smoking cigarettes, even a single puff, in the last 30 days preceding the survey (main outcome). Results Altogether 1563 adolescents participated in the survey. However, 1122 had data on the main outcome. Altogether, 15.8% of the respondents reported having smoked cigarettes (10.3% among males, and 11.1% among females). Factors that were associated with reported non-smoking were: discussing harmful effects of smoking cigarettes with their family members (OR = 0.61, 95% CI 0.52, 0.71); being taught that smoking makes teeth yellow, causes wrinkles and smokers smell badly (OR = 0.62, 95% CI 0.52, 0.74); being taught that people of the respondent's age do not smoke (OR = 0.81, 95% CI 0.69, 0.95); and having reported that religious organizations discouraged young people smoking (OR = 0.70, 95% CI 0.60, 0.82). However, exposure to a lot many antismoking messages at social gatherings was associated with smoking. Exposure to antismoking print media was not associated with smoking status. Conclusion A combination of school and home based antismoking interventions may be effective in controlling adolescent smoking in Somaliland.
Potentilla puberula Schinz et Thell.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. puberula Krasan em. Schinz et Thell. (P. Gaudini Gremli, P. cinerea auct. mult.) Cat. 92 und 425. Verbreitet. Bis 2100 m: Zinal-Lirec (Sulger 1948) und gegen 2150 m: Findelen bei Zermatt (Thellung 1922). In den var. typica (Th. Wolf) (var. Gaudini [Gremli] Schinzet Keller), var. longifolia (Borbäs) Schinz et Keller und var. viridis (Neilr.) (var. virescens [Th. Wolf] Schinz et Keller).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Investigation of Colonic Regeneration via Precise Damage Application Using Femtosecond Laser-Based Nanosurgery
Creators: name: Donath, Sören
name: Angerstein, Leon
name: Gentemann, Lara
name: Müller, Dominik
name: Seidler, Anna E.
name: Jesinghaus, Christian
name: Bleich, André
name: Heisterkamp, Alexander
name: Buettner, Manuela
name: Kalies, Stefan
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: colonoid
subject: femtosecond laser
subject: lentiviral transduction
subject: nanosurgery
subject: organoid
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Organoids represent the cellular composition of natural tissue. So called colonoids, organoids derived from colon tissue, are a good model for understanding regeneration. However, next to the cellular composition, the surrounding matrix, the cell–cell interactions, and environmental factors have to be considered. This requires new approaches for the manipulation of a colonoid. Of key interest is the precise application of localized damage and the following cellular reaction. We have established multiphoton imaging in combination with femtosecond laser-based cellular nanosurgery in colonoids to ablate single cells in the colonoids’ crypts, the proliferative zones, and the differentiated zones. We observed that half of the colonoids recovered within six hours after manipulation. An invagination of the damaged cell and closing of the structure was observed. In about a third of the cases of targeted crypt damage, it caused a stop in crypt proliferation. In the majority of colonoids ablated in the crypt, the damage led to an increase in Wnt signalling, indicated via a fluorescent lentiviral biosensor. qRT-PCR analysis showed increased expression of various proliferation and Wnt-associated genes in response to damage. Our new model of probing colonoid regeneration paves the way to better understand organoid dynamics on a single cell level. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Extranodal natural killer/T-cell lymphoma in Malawi: a report of three cases
Creators: name: van der Gronde, Toon
name: Kamiza, Steve
name: Fedoriw, Yuri
name: Dhungel, Bal M
name: Kampani, Coxcilly
name: Amuquandoh, Amy
name: Gopal, Satish
name: Tomoka, Tamiwe
name: Powers, Eric
name: Montgomery, Nathan D
Publisher: name: BioMed Central
Year: 2017

description: Abstract Background Extranodal NK/T-cell lymphoma (ENKTCL) reports from sub-Saharan Africa (SSA) are remarkably rare, despite early childhood acquisition and high prevalence of the causative infectious agent, Epstein-Barr virus (EBV), and frequent occurrence of other lymphoproliferative disorders causally associated with EBV. Case presentations At a national teaching hospital in Malawi, three patients of African descent were seen with ENKTCL between 2013 and 2014. Patients were aged between 29 and 60 years, two with craniofacial involvement and one with a primary abdominal tumor, and all were HIV-negative. All had systemic B symptoms, and two severely impaired performance status. On histologic review, morphology and immunophenotyping demonstrated classical ENKTCL features in all cases, including diffuse proliferations of intermediate-to-large atypical lymphocytes with high mitotic activity and extensive background necrosis, positivity for CD3 and CD56, and negativity for CD20. By in situ hybridization, all three tumors were positive for EBV-encoded RNA (EBER). Baseline plasma EBV DNA was also markedly elevated for all three patients. Due to radiotherapy and chemotherapy limitations, patients were treated with CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone) with rapid disease progression. All three patients died from progressive lymphoma within 3 months of initial diagnosis. Conclusions Our experience with these three patients in Malawi can highlight that ENKTCL does indeed occur in SSA, increase familiarity with ENKTCL among clinicians and pathologists throughout the region, and emphasize the need for better diagnosis and treatment for this neglected population.
Freezing of an unconventional two-dimensional plasma
Creators: name: Herland, Egil V.
name: Babaev, Egor
name: Bonderson, Parsa
name: Gurarie, Victor
name: Nayak, Chetan
name: Radzihovsky, Leo
name: Sudbø, Asle
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study an unconventional two-dimensional, two-component classical plasma on a sphere, with emphasis on detecting signatures of melting transitions. This system is relevant to Ising-type quantum Hall states, and is unconventional in the sense that it features particles interacting via two different two-dimensional Coulomb interactions. One species of particles in the plasma carries charge of both types (Q_1,Q_2), while the other species carries only charge of the second type (0,-Q_2). We find signatures of a freezing transition at Q_1^2 approximately 140. This means that the species with charge of both types will form a Wigner crystal, whereas the species with charge of the second type also shows signatures of being a Wigner crystal, due to the attractive inter-component interaction of the second type. Moreover, there is also a Berezinskii-Kosterlitz-Thouless phase transition at Q_2^2 approximately 4, at which the two species of particles bind to form molecules that are neutral with respect to the second Coulomb interaction. These two transitions appear to be independent of each other, giving a rectangular phase diagram. As a special case, Q_2=0 describes the (conventional) two-dimensional one-component plasma. Our study is consistent with previous studies of this plasma, and sheds new light on the freezing transition of this system.
description: 8 pages, 8 figures. Submitted to Physical Review B
Giant dipole resonance width as a probe for nuclear deformation at finite excitation
Creators: name: Pandit, Deepak
name: Dey, Balaram
name: Mondal, Debasish
name: Mukhopadhyay, S.
name: Pal, Surajit
name: Bhattacharya, Srijit
name: De, A.
name: Banerjee, S. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The systematic study of the correlation between the experimental giant dipole resonance (GDR) width and the average deformation of the nucleus at finite excitation is presented for the mass region A ~ 59 to 208. We show that the width of the GDR (Γ) and the quadrupole deformation of the nucleus do not follow a linear relation, as predicted earlier, due to the GDR induced quadrupole moment and the correlation also depends on the mass of the nuclei. The different empirical values of extracted from the experimental GDR width match exceptionally well with the thermal shape fluctuation model. As a result, this universal correlation between and Γprovides a direct experimental probe to determine the nuclear deformation at finite temperature and angular momentum in the entire mass region.
description: 5 pages, 3 Figures, Published in Phys. Rev. C 87, 044325 (2013)
Mare nostrum - mare mutatur: die Biodiversität des Mittelmeers im Wandel der Zeiten und unter dem Einfluss des Menschen
Creators: name: Hafner, Mathias
name: Rudolf, Rüdiger
Publisher: name: Heidelberg University Publishing
Year: 2016

description: Ökosysteme wie das Mittelmeer sind keine statischen Gebilde. Sie haben eine Historie. Wir wollen die Geschichte rekonstruieren und dabei der Frage nachgehen, woher die Meeresorganismen ursprünglich stammen, die es heute bevölkern. Sie selbst und somit auch ihre Lebensgemeinschaften entwickelten sich keineswegs glatt und schon gar nicht zielgerichtet, wie man es aus Sicht der Evolution als stetes Wechselspiel von Veränderung und Auslese annehmen könnte. Immer wieder wanderten neue Arten in das Mittelmeer ein, während andere ausstarben. Vor rund 6 Mio. Jahren verwandelte eine nahezu unglaubliche Naturkatastrophe große Teile des Mittelmeeres binnen weniger hundert Jahre in eine öde Salzwüste. Diese „Salinitätskrise“ war der dramatische Auftakt für eine umfassende Veränderung der gesamten mediterranen Fauna und Flora. Nachdem sie überstanden war, ergriffen Einwanderer aus dem Atlantik die Chance ins Rampenlicht der Evolution zu treten. Viele von ihnen haben sich erfolgreich etabliert und sogar selbst neue Arten hervorgebracht. Heute müssen sie sich wieder existenziellen Herausforderungen stellen: neben den bekannten Bedrohungen durch Überfischung und Küstenbebauung, kommen die mögliche Konfrontation mit Einwanderern, vor allem aus dem Roten Meer, und die Folgen der Klimaerwärmung dazu. Ein Weg aus dieser existenziellen Krise des Mittelmeeres könnte die Errichtung eines engmaschigen Netzes von Meeresschutzgebieten sein. Sie würden nachweislich nicht nur die Biodiversität erhalten, sondern langfristig sogar die Fangerträge erhöhen. Es ist an den Entscheidungsträgern, diese Sachverhalte in konkrete Aktionen umzusetzen und damit dem mare nostrum eine Zukunft zu geben, die seiner angestammten Bedeutung als einzigartiger Kulturraum und Sehnsuchtsort gerecht wird.
description: Heidelberger Jahrbücher Online, Bd. 1 (2016): Stabilität im Wandel
Dephasing of Si singlet-triplet qubits due to charge and spin defects
Creators: name: Culcer, Dimitrie
name: Zimmerman, Neil M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effect of charge and spin noise on singlet-triplet qubits in Si quantum dots. We set up a theoretical framework aimed at enabling experiment to efficiently identify the most deleterious defects, and complement it with the knowledge of defects gained in decades of industrial and academic work. We relate the dephasing rates $Γ_ϕ$ due to various classes of defects to experimentally measurable parameters such as charge dipole moment, spin dipole moment and fluctuator switching times. We find that charge fluctuators are more efficient in causing dephasing than spin fluctuators.
Characterization of protonated and deuterated Tetra-Phenyl Butadiene Film in a Polystyrene Matrix
Creators: name: Gehman, V. M.
name: Ito, T. M.
name: Griffith, W. C.
name: Seibert, S. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study the effect of deuteration and annealing on the fluorescence spectrum shape and VUV to visible conversion efficiency of TPB films in a polystyrene matrix with input light from 120 to 220 nm. We observed no discernible difference in the fluorescence spectrum shape between any of the films. The deuterated film performed equally well compared to the standard one in terms of conversion efficiency, but annealing seems to degrade this efficiency to roughly 75% of its non annealed value at all wavelengths studied.
description: 7 pages, 3 figures. Submitted to Journal of Instrumentation
The Effective Temperature Scale of M dwarfs
Creators: name: Rajpurohit, A. S.
name: Reylé, C.
name: Allard, F.
name: Homeier, D.
name: Schultheis, M.
name: Bessell, M. S.
name: Robin, A. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Despite their large number in the Galaxy, M dwarfs remain elusive objects and the modeling of their photospheres has long remained a challenge (molecular opacities, dust cloud formation). Our objectives are to validate the BT-Settl model atmospheres, update the M dwarf T eff -spectral type relation, and find the atmospheric parameters of the stars in our sample. We compare two samples of optical spectra covering the whole M dwarf sequence with the most recent BT-Settl synthetic spectra and use a \c{hi}2 minimization technique to determine Teff . The first sample consists of 97 low-resolution spectra obtained with NTT at La Silla Observatory. The second sample contains 55 mid-resolution spectra obtained at the Siding Spring Observatory (SSO). The spectral typing is realized by comparison with already classified M dwarfs. We show that the BT-Settl synthetic spectra reproduce the slope of the spectral energy distribution and most of its features. Only the CaOH band at 5570Å and AlH and NaH hydrides in the blue part of the spectra are still missing in the models. The Teff-scale obtained with the higher resolved SSO 2.3 m spectra is consistent with that obtained with the NTT spectra. We compare our Teff scale with those of other authors and to published isochrones using the BT-Settl colors. We also present relations between effective temperature, spectral type and colors of the M dwarfs.
description: 16 pages, 6 figures, accepted for publication in A&A