cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nature's forms are frilly, flexible, and functional
Creators: name: Yamamoto, Kenneth K.
name: Shearman, Toby L.
name: Struckmeyer, Erik J.
name: Gemmer, John A.
name: Venkataramani, Shankar C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Differential Geometry (math.DG)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A ubiquitous motif in nature is the self-similar hierarchical buckling of a thin lamina near its margins. This is seen in leaves, flowers, fungi, corals, and marine invertebrates. We investigate this morphology from the perspective of non-Euclidean plate theory. We identify a novel type of defect, a branch-point of the normal map, that allows for the generation of such complex wrinkling patterns in thin elastic hyperbolic surfaces, even in the absence of stretching. We argue that branch points are the natural defects in hyperbolic sheets, they carry a topological charge which gives them a degree of robustness, and they can influence the overall morphology of a hyperbolic surface without concentrating elastic energy. We develop a theory for branch points and investigate their role in determining the mechanical response of hyperbolic sheets to weak external forces.
description: 23 pages, 19 figures
An {\it ab initio} relativistic coupled-cluster theory of dipole and quadrupole polarizabilities: Applications to a few alkali atoms and alkaline earth ions
Creators: name: Sahoo, B. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a general approach within the relativistic coupled-cluster theory framework to calculate exactly the first order wave functions due to any rank perturbation operators. Using this method, we calculate the static dipole and quadrupole polarizabilities in some alkali atoms and alkaline earth-metal ions. This may be a good test of the present theory for different rank and parity interaction operators. This shows a wide range of applications including precise calculations of both parity and CP violating amplitudes due to rank zero and rank one weak interaction Hamiltonians. We also give contributions from correlation effects and discuss them in terms of lower order many-body perturbation theory.
description: Three tables and one figure
Business Cycle and Conserved Quantity in Economics
Creators: name: Taniguchi, Masa-aki
name: Bando, Masako
name: Nakayama, Akihiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Finance (q-fin.GN)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We propose a dynamical model for business cycle based on an optimal DI model. In the model there exists a conserved quantity, which corresponds to the total energy in a dynamical system. We found that the business cycle with the period 6 or 7 years is nicely reproduced, since the model predicts a periodic motion in the conservative system.
description: 13 pages and 10 figures
Non-detection of Helium in the upper atmospheres of TRAPPIST-1b, e and f
Creators: name: Krishnamurthy, Vigneshwaran
name: Hirano, Teruyuki
name: Stefánsson, Guðmundur
name: Ninan, Joe P.
name: Mahadevan, Suvrath
name: Gaidos, Eric
name: Kopparapu, Ravi
name: Sato, Bunei
name: Hori, Yasunori
name: Bender, Chad F.
name: Cañas, Caleb I.
name: Diddams, Scott A.
name: Halverson, Samuel
name: Harakawa, Hiroki
name: Hawley, Suzanne
name: Hearty, Fred
name: Hebb, Leslie
name: Hodapp, Klaus
name: Jacobson, Shane
name: Kanodia, Shubham
name: Konishi, Mihoko
name: Kotani, Takayuki
name: Kowalski, Adam
name: Kudo, Tomoyuki
name: Kurokawa, Takashi
name: Kuzuhara, Masayuki
name: Lin, Andrea
name: Maney, Marissa
name: Metcalf, Andrew J.
name: Morris, Brett
name: Nishikawa, Jun
name: Omiya, Masashi
name: Robertson, Paul
name: Roy, Arpita
name: Schwab, Christian
name: Serizawa, Takuma
name: Tamura, Motohide
name: Ueda, Akitoshi
name: Vievard, Sébastien
name: Wisniewski, John
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We obtained high-resolution spectra of the ultra-cool M-dwarf TRAPPIST-1 during the transit of its planet `b' using two high dispersion near-infrared spectrographs, IRD instrument on the Subaru 8.2m telescope and HPF instrument on the 10m Hobby-Eberly Telescope. These spectroscopic observations are complemented by a photometric transit observation for planet `b' using the APO/ARCTIC, which assisted us to capture the correct transit times for our transit spectroscopy. Using the data obtained by the new IRD and HPF observations, as well as the prior transit observations of planets `b', `e' and `f' from IRD, we attempt to constrain the atmospheric escape of the planet using the He I triplet 10830 Å absorption line. We do not detect evidence for any primordial extended H-He atmospheres in all three planets. To limit any planet related absorption, we place an upper limit on the equivalent widths of <7.754 mÅ for planet `b', <10.458 mÅ for planet `e', and <4.143 mÅ for planet `f' at 95% confidence from the IRD data, and <3.467 mÅ for planet `b' at 95% confidence from HPF data. Using these limits along with a solar-like composition isothermal Parker wind model, we attempt to constrain the mass-loss rates for the three planets. For TRAPPIST-1b, our models exclude the highest possible energy-limited rate for a wind temperature <5000 K. This non-detection of extended atmospheres having low mean-molecular weight in all three planets aids in further constraining their atmospheric composition by steering the focus towards the search of high molecular weight species in their atmospheres.
description: 11 pages; 4 figures; Accepted for publication in AJ
Masses of $[{\bf 70},\ell^+]$ Baryons in the $1/N_c$ Expansion
Creators: name: Matagne, N.
name: Stancu, Fl.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The masses of positive $[{\bf 70},0^+]$ and $[{\bf 70},2^+]$ nonstrange and strange baryons are calculated in the $1/N_c$ expansion. The approach is based on the separation of a system of $N_c$ quarks into an excited core and an excited quark. The previous work for two flavor baryons is now extended to include strange baryons, to first order in SU(3)-flavor breaking. We show that the extension to $N_f = 3$ maintains the regularities previously observed in the behaviour of the linear term in $N_c$, of the spin-spin and of the spin-orbit terms. In particular the contribution of the spin-dependent terms decrease with the excitation energy, the dominant term remaining the spin-spin term.
description: 20 pages, 6 tables, RevTeX4, published version
New sum rules for Wigner 3jm symbols: application to expectation values of hydrogenic ions
Creators: name: Pain, Jean-Christophe
name: Gilleron, Franck
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present new sum rules for $3jm$ coefficients, which involve, in addition to the usual weighting factor $(2j + 1)$ where $j$ is an angular momentum, the quantity $[j(j + 1)]^k$ with $k \ge 1$. The sum rules appear for instance in the statistical modeling of rotational spectra within the theory of moments, and enable one to deduce the expectation values of $r^k$ (used in the theory of Stark effect for hydrogenic ions) in parabolic coordinates from the expectation values of $r^k$ in spherical coordinates.
description: submitted to J. Phys. B: At. Mol. Opt. Phys
Correlation of Serum Adiponectin with hs CRP, eGFR and BMI in CKD Patients in Comparison to Healthy People
Creators: name: Hossain, Md. Shahadat
name: Saha, Sourav
name: Mekhola, Marjoa Humaira
name: Sultana, Maimuna
name: Nargis, Mst. Hasnahena
name: Tahora, Sharaban
name: Rahman, Md. Rajibur
name: Islam, Majadul
name: Azim, Nazma
name: Farjana, Jinat
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 320214
subject: Nephrology and urology
classificationCode: 320299
subject: Clinical sciences not elsewhere classified

description: Introduction: Chronic kidney disease (CKD) is a unique condition with exceedingly high incidence of insulin resistance and cardiovascular morbidity and mortality. Aim of the study: To see the correlation of serum adiponectin with hs CRP, eGFR and BMI in CKD patients in comparison to healthy people. Material & Methods: This cross sectional study was conducted at the Department of Nephrology and Department of biochemistry of National Institute of Kidney Diseases and Urology, Dhaka. A total of 149 patients were included for the study from January 2018 to December 2018. Among them 112 were predominantly patients of CKD stage 3 to 5 and rest of 37 healthy people were enrolled in this study as Group I and Group II respectively. Purposive sampling technique was used. Statistical analysis of the results was done by using computer based statistical software, SPSS (SPSS Inc, Chicago, IL, USA). Prior to the commencement of the study, the ethical committee of NIKDU, Dhaka, approved the thesis protocol. Results: Mean age was 50.45 ± 10.45 years and 36.55 ± 8.35 years in Group I and Group II. Males were little higher in CKD groups. Serum adiponectin level was significantly higher in female both in group I and group II. 51% of our CKD patients had Glomerulonephritis as a primary cause. Serum creatinine, S. adiponectin were significantly higher and eGFR were significantly lower in Group I comparing to Group II. BMI and eGFR were found significantly lower in G5 patients comparing G3 and G4 patients. Hs CRP and Serum adiponectin were found significantly higher in G5 patients than G3 and G4 patients. Hs CRP and Serum adiponectin were found significantly higher in G5 patients than G3 and G4 patients. Conclusion According to the study, S. adiponectin was found significantly higher in CKD patients in comparison to healthy people. S. Adiponectin, serum creatinine and hs CRP were found higher whereas eGFR, BMI were found lower in CKD patients in comparison to healthy people.
The Sandpile Group of a Tree
Creators: name: Levine, Lionel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C25 (Primary), 05C05 (Secondary)

description: A wired tree is a graph obtained from a tree by collapsing the leaves to a single vertex. We describe a pair of short exact sequences relating the sandpile group of a wired tree to the sandpile groups of its principal subtrees. In the case of a regular tree these sequences split, enabling us to compute the full decomposition of the sandpile group as a product of cyclic groups. This resolves in the affirmative a conjecture of E. Toumpakari concerning the ranks of the Sylow p-subgroups.
description: v2 incorporates referee comments, corrects references, improves notation
LEvEL: Low-Energy Neutrino Experiment at the LHC
Creators: name: Kelly, Kevin J.
name: Machado, Pedro A. N.
name: Marchionni, Alberto
name: Perez-Gonzalez, Yuber F.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose the operation of \textbf{LEvEL}, the Low-Energy Neutrino Experiment at the LHC, a neutrino detector near the Large Hadron Collider Beam Dump. Such a detector is capable of exploring an intense, low-energy neutrino flux and can measure neutrino cross sections that have previously never been observed. These cross sections can inform other future neutrino experiments, such as those aiming to observe neutrinos from supernovae, allowing such measurements to accomplish their fundamental physics goals. We perform detailed simulations to determine neutrino production at the LHC beam dump, as well as neutron and muon backgrounds. Measurements at a few to ten percent precision of neutrino-argon charged current and neutrino-nucleus coherent scattering cross sections are attainable with 100~ton-year and 1~ton-year exposures at LEvEL, respectively, concurrent with the operation of the High Luminosity LHC. We also estimate signal and backgrounds for an experiment exploiting the forward direction of the LHC beam dump, which could measure neutrinos above 100 GeV.
description: 30 pages, 15 figures, added clarifying comments, further discussion on systematics and other possible detector technologies. Version accepted for publication in the JHEP
Local and Global Distinguishability in Quantum Interferometry
Creators: name: Durkin, Gabriel A.
name: Dowling, Jonathan P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A statistical distinguishability based on relative entropy characterises the fitness of quantum states for phase estimation. This criterion is employed in the context of a Mach-Zehnder interferometer and used to interpolate between two regimes, of local and global phase distinguishability. The scaling of distinguishability in these regimes with photon number is explored for various quantum states. It emerges that local distinguishability is dependent on a discrepancy between quantum and classical rotational energy. Our analysis demonstrates that the Heisenberg limit is the true upper limit for local phase sensitivity. Only the `NOON' states share this bound, but other states exhibit a better trade-off when comparing local and global phase regimes.
description: 4 pages, in submission, minor revisions
KEA: Tuning an Exabyte-Scale Data Infrastructure
Creators: name: Zhu, Yiwen
name: Krishnan, Subru
name: Karanasos, Konstantinos
name: Tarte, Isha
name: Power, Conor
name: Modi, Abhishek
name: Kumar, Manoj
name: Zhang, Deli
name: Muthyala, Kartheek
name: Jurgens, Nick
name: Sakalanaga, Sarvesh
name: Darbha, Sudhir
name: Iyer, Minu
name: Agarwal, Ankita
name: Curino, Carlo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Microsoft's internal big-data infrastructure is one of the largest in the world -- with over 300k machines running billions of tasks from over 0.6M daily jobs. Operating this infrastructure is a costly and complex endeavor, and efficiency is paramount. In fact, for over 15 years, a dedicated engineering team has tuned almost every aspect of this infrastructure, achieving state-of-the-art efficiency (>60% average CPU utilization across all clusters). Despite rich telemetry and strong expertise, faced with evolving hardware/software/workloads this manual tuning approach had reached its limit -- we had plateaued. In this paper, we present KEA, a multi-year effort to automate our tuning processes to be fully data/model-driven. KEA leverages a mix of domain knowledge and principled data science to capture the essence of our cluster dynamic behavior in a set of machine learning (ML) models based on collected system data. These models power automated optimization procedures for parameter tuning, and inform our leadership in critical decisions around engineering and capacity management (such as hardware and data center design, software investments, etc.). We combine "observational" tuning (i.e., using models to predict system behavior without direct experimentation) with judicious use of "flighting" (i.e., conservative testing in production). This allows us to support a broad range of applications that we discuss in this paper. KEA continuously tunes our cluster configurations and is on track to save Microsoft tens of millions of dollars per year. At the best of our knowledge, this paper is the first to discuss research challenges and practical learnings that emerge when tuning an exabyte-scale data infrastructure.
Discussion of learning from elders when young
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-220308-02: Discussion of how Verdena learned to tell stories and make baskets from elders in the community when she was young, primarily in English but with some Hupa vocabulary ('shadow', 'reflection') interspersed.
A Theoretical Construction of Thin Shell Wormhole from Tidal Charged Black hole
Creators: name: Rahaman, F.
name: Kalam, M.
name: Rahman, K A
name: Chakraborti, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, Dadhich et al [ Phys.Lett.B 487, 1 (2000)] have discovered a black hole solution localized on a three brane in five dimensional gravity in the Randall-Sundrum scenario. In this article, we develop a new class of thin shell wormhole by surgically grafting above two black hole spacetimes. Various aspects of this thin wormhole are also analyzed.
description: 14 pages, 6 figures, Accepted in Gen.Rel.Grav
A Proximal Quasi-Newton Trust-Region Method for Nonsmooth Regularized Optimization
Creators: name: Aravkin, Aleksandr Y.
name: Baraldi, Robert
name: Orban, Dominique
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J52, 65K10, 90C53, 90C56

description: We develop a trust-region method for minimizing the sum of a smooth term $f$ and a nonsmooth term $h$), both of which can be nonconvex. Each iteration of our method minimizes a possibly nonconvex model of $f + h$ in a trust region. The model coincides with $f + h$ in value and subdifferential at the center. We establish global convergence to a first-order stationary point when $f$ satisfies a smoothness condition that holds, in particular, when it has Lipschitz-continuous gradient, and $h$ is proper and lower semi-continuous. The model of $h$ is required to be proper, lower-semi-continuous and prox-bounded. Under these weak assumptions, we establish a worst-case $O(1/ε^2)$ iteration complexity bound that matches the best known complexity bound of standard trust-region methods for smooth optimization. We detail a special instance, named TR-PG, in which we use a limited-memory quasi-Newton model of $f$ and compute a step with the proximal gradient method, resulting in a practical proximal quasi-Newton method. We establish similar convergence properties and complexity bound for a quadratic regularization variant, named R2, and provide an interpretation as a proximal gradient method with adaptive step size for nonconvex problems. R2 may also be used to compute steps inside the trust-region method, resulting in an implementation named TR-R2. We describe our Julia implementations and report numerical results on inverse problems from sparse optimization and signal processing. Both TR-PG and TR-R2 exhibit promising performance and compare favorably with two linesearch proximal quasi-Newton methods based on convex models.
description: 29 pages, 3 figures, 3 tables
Welding information system--design, operations, methods
Creators: name: Latendresse, Vincent
Publisher: name: University of British Columbia
Year: 2008

description: An innovative knowledge management system has been developed using the methods and techniques available through micro-computers and WINDOWS 3.1: The WISDOM project aims at research and development of an innovative and comprehensive information collection on welding in close cooperation with industry utilizing modern micro-computer techniques of information review, retrieval, storage, updating, and transfer. Emphasis is placed on new and more efficient methods of knowledge communication, pursuing the idea of exploring knowledge (in contrast to rehearing recipes). The development of this project concentrates on the following three main topics. •Knowledge Base on Steel Metallurgy and Welding; •Analysis and Design Methods for Welded Steel Connections; •Design Requirements of Welds. This includes the considerations of different types of welds and joints and a thorough review of welding history and basic welding procedures.
Impact parameter model for GPD
Creators: name: Troshin, S. M.
name: Tyurin, N. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a model for the unpolarized generalized parton distribution function (GPD) based on impact parameter representation and discuss its x and t dependencies at large and small values of these variables.
description: 10 pages, 1 figure, revised text and references
Survey Breakoffs in a Computer-Assisted Telephone Interview
Creators: name: McGonagle, Katherine A.
Publisher: name: European Survey Research Association
Year: 2013
Subjects: Panel study; breakoff; survey response behavior; paradata; computer-assisted telephone interview

description: Nearly 23% of all telephone interviews in the most recently completed wave of the Panel Study of Income Dynamics break off at least once, requiring multiple sessions to complete the interview.  Given this high rate, a study was undertaken to better understand the causes and consequences of temporary breakoffs in a computer-assisted telephone interview setting. The majority of studies examining breakoffs have been conducted in the context of self-administered web surveys. The present study uses new paradata collected on telephone interview breakoffs to describe their prevalence, associated field effort, the instrument sections and questions on which they occur, their source - whether respondent-initiated, interviewer-initiated, or related to telephone problems - and associations with respondent and interviewer characteristics. The results provide information about the survey response process and suggest a set of recommendations for instrument design and interviewer training, as well as additional paradata that should be collected to provide more insight into the breakoff phenomenon.
description: Survey Research Methods, Vol 7, No 2 (2013)
Violating the Thermodynamic Uncertainty Relation in the Three-Level Maser
Creators: name: Kalaee, Alex Arash Sand
name: Wacker, Andreas
name: Potts, Patrick P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nanoscale heat engines are subject to large fluctuations which affect their precision. The Thermodynamic Uncertainty Relation (TUR) provides a trade-off between output power, fluctuations and entropic cost. This trade-off may be overcome by systems exhibiting quantum coherence. This letter provides a study of the TUR in a prototypical quantum heat engine, the Scovil & Schulz-DuBois maser. Comparison with a classical reference system allows us to determine the effect of quantum coherence on the performance of the heat engine. We identify analytically regions where coherence suppresses fluctuations, implying a quantum advantage, as well as regions where fluctuations are enhanced by coherence. This quantum effect cannot be anticipated from the off-diagonal elements of the density matrix. Because the fluctuations are not encoded in the steady state alone, TUR violations are a consequence of coherence that goes beyond steady-state coherence. While the system violates the conventional TUR, it adheres a recent formulation of a quantum TUR. We further show that parameters where the engine operates close to the conventional limit are prevalent and TUR violations in the quantum model not uncommon.
description: 6 pages, 4 figures; 6 pages of supplementary information
Placement, Wording, and Interviewers: Identifying Correlates of Consent to Link Survey and Administrative Data
Creators: name: Sakshaug, Joseph
name: Tutz, Valerie
name: Kreuter, Frauke
Publisher: name: European Survey Research Association
Year: 2013
Subjects: administrative data; informed consent; record linkage; experiment

description: Record linkage is becoming more important as survey budgets are tightening while at the same time demands for more statistical information are rising. Not all respondents consent to linking their survey answers to administrative records, threatening inferences made from linked data sets. So far, several studies have identified respondent-level attributes that are correlated with the likelihood of providing consent (e.g., age, education), but these factors are outside the control of the survey designer. In the present study three factors that are under the control of the survey designer are evaluated to assess whether they impact respondents' likelihood of linkage consent: 1) the wording of the consent question; 2) the placement of the consent question and; 3) interviewer attributes (e.g., attitudes toward data sharing and consent, experience, expectations). Data from an experiment were used to assess the impact of the first two and data from an interviewer survey that was administered prior to the start of data collection are used to examine the third. The results show that in a telephone setting: 1) indicating time savings in the wording of the consent question had no effect on the consent rate; 2) placement of the consent question at the beginning of the questionnaire achieved a higher consent rate than at the end and; 3) interviewers' who themselves would be willing to consent to data linkage requests were more likely to obtain linkage consent from respondents.
description: Survey Research Methods, Vol 7, No 2 (2013)
Positive, negative, and bipolar questions: The effect of question polarity on ratings of text readability
Creators: name: Kamoen, Naomi
name: Holleman, Bregje
name: Van Den Bergh, Huub
name: Sanders, Ted
Publisher: name: European Survey Research Association
Year: 2013
Subjects: contrastive questions; bipolar questions; wording effects; generalizability; reliability

description: For decades, survey researchers have known that respondents give different answers to attitude questions worded positively (X is good. Agree-Disagree), negatively (X is bad. Agree-Disagree) or on a bipolar scale (X is bad-good). This makes survey answers hard to interpret, especially since findings on exactly how the answers are affected are conflicting. In the current paper, we present twelve studies in which the effect of question polarity was measured for a set of thirteen contrastive adjectives. In each study, the same adjectives were used so the generalizability of wording effects across studies could be examined for each word pair. Results show that for five of the word pairs an effect of question wording can be generalized. The direction of these effects are largely consistent: respondents generally give the same answers to positive and bipolar questions, but they are more likely to disagree with negative questions than to agree with positive questions or to choose the positive side of the bipolar scale. In other words, respondents express their opinions more positively when the question is worded negatively. Even though answers to the three wording alternatives sometimes differ, results also show that reliable answers can be obtained with all three wording alternatives. So, for survey practice, these results suggest that all three wording alternatives may be used for attitude measurement.
description: Survey Research Methods, Vol 7, No 3 (2013)
Relative Mode Effects on Data Quality in Mixed-Mode Surveys by an Instrumental Variable
Creators: name: Vannieuwenhuyze, Jorre T.A.
name: Revilla, Melanie
Publisher: name: European Survey Research Association
Year: 2013
Subjects: Mode effects; Measurement effects; Selection effects; Multitrait-multimethod; Reliability; Validity; Quality; European Social Survey

description: In order to compare data-quality of different data-collection modes, multitrait-multimethod (MTMM) experiments have been implemented in a mixed-mode experiment parallel to the European Social Survey (ESS) fourth round (2008/2009). Special interest lies in measurement effects between the modes which refer to the pure impact of a data-collection mode on the quality. Nevertheless, mere comparison between quality estimates of the different modes does not allow drawing conclusions about measurement effects. Indeed, measurement effects may be completely confounded with selection effects which refer to differences in respondents compositions across the modes. However, by comparing the mixed-mode data with the main ESS data and treating the dataset of origin as an instrumental variable, some conditional measurement effects and selection effects can be disentangled. This paper provides a preliminary exploratory analysis of this approach. The results generally yield low to fair measurement effects while the selection effects on some items are rather large.
description: Survey Research Methods, Vol 7, No 3 (2013)
Employed or inactive? Cross-national differences in coding parental leave beneficiaries in European Labour Force Survey data
Creators: name: Mikucka, Malgorzata
name: Valentova, Marie
Publisher: name: European Survey Research Association
Year: 2013
Subjects: labor force survey; employment status; women's employment; cross-country comparability; measurement; parental leave

description: In survey research the parental leave beneficiaries are usually coded  as either employed or inactive. An exception is the European Labor Force Survey (EU-LFS), which includes parental leave among other forms of being  employed but temporarily not working. 

This paper explores classification of parental leave takers in EU-LFS. We show that classification rules differ cross-nationally: in some countries parental leave takers are considered inactive, in others -- employed but temporarily not working. In particular in the Czech Republic, Estonia, Hungary and Slovakia the EU-LFS data classify the beneficiaries as inactive. We estimate the number of mothers on parental leave in these countries and show that EU-LFS employment rates of women aged 18-40 are biased downwards 2-7 percentage points; for mothers of children aged 0-2 the bias reaches 12-45 percentage points.

Our study shows the limited comparability of EU-LFS employment rates and warns about possible bias in cross-national studies.
description: Survey Research Methods, Vol 7, No 3 (2013)
Transcription of a fry-bread recipe
Creators: name: Parker, Verdena
name: Escamilla, Ramón
name: Newbold, Lindsey
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-220308-03 and VP-220308-04: Transcription of the fry-bread recipe, file VP-101107-03, from the beginning of the file to 2:54 (VP-220308-03) and from 2:54 to 4:40 (VP-220308-04).
Η διοίκηση της ορθόδοξης Εκκλησίας στις κυριότερες ανοικτές και κλειστές αστικές κοινότητες του ελλαδικού χώρου κατά την περίοδο της βενετικής κυριαρχίας (13ος – 18ος αι.): Μία ιστοριογραφική προσέγγιση
Creators: name: Βασιλείου, Στυλιανός Χριστόφορου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ορθόδοξη Εκκλησία
Διοίκηση
Βενετική κυριαρχία (13ος – 8ος αι.)
Orthodoxy Church
Administration
Venetian Greece (13th – 18th cent.)

description: This thesis examines issues of the ecclesiastical administration during the Venetian occupation of Greece. The time period begins from 1204, the year of the dismemberment of the Byzantine Empire from the Fourth Crusade and the consecutive western occupation of former Byzantine lands. The thesis tackles certain case studies in an attempt to draw the picture of the Orthodox Church and particularly of its administration. Wherever possible, two strands are highlighted (a) the relations between the Orthodox and the Roman Catholic rite and (b) cases of direct Roman Catholic interference in matters of the Greek Orthodox organisational management. The discussion of the topic revolves around the principal open and closed urban societies, because it is precisely there that we observe social resilience in the sector of the political and, consequently, the ecclesiastical administration. The thesis tackles issues such as elections for the high Orthodox clergy (protopapas, metropolitans, bishops), decisions and decrees of Venice regarding the organisation of the regional churches, ecclesiastical antagonism, participation of the laity in the elections for the higher clergy, in the ecclesiastical administration and by and large in the organisation and life of the parishioners
description: Η παρούσα εργασία πραγματεύεται ζητήματα εκκλησιαστικής διοίκησης την περίοδο της βενετικής κυριαρχίας στον ελλαδικό χώρο. Έχοντας ως αφετηρία το 1204, έτος της κατάλυσης της Βυζαντινής Αυτοκρατορίας από τους Σταυροφόρους και της έναρξης δυτικών κυριαρχιών στον έως τότε βυζαντινό κόσμο, επιχειρεί την προσέγγιση ορισμένων περιοχών, προσπαθώντας να δώσει την εικόνα της ορθόδοξης Εκκλησίας και της διοίκησής της ειδικότερα. Επισημαίνονται, όπου είναι απαραίτητο και εμφανές, αφενός οι σχέσεις Ορθοδοξίας και Καθολικισμού, και αφετέρου οι περιπτώσεις στις οποίες ο δεύτερος δεν δίστασε να επέμβει σε θέματα οργάνωσης της πρώτης. Το ζήτημα μελετάται στις κυριότερες ανοικτές και κλειστές αστικές κοινότητες, καθώς σε αυτές παρατηρείται μία κοινωνική ευελιξία στον τομέα της πολιτικής διοίκησης και κατ’ επέκτασιν της εκκλησιαστικής. Μελετώνται ζητήματα όπως εκλογές των επικεφαλής της ορθόδοξης Εκκλησίας (πρωτοπαπάδων, μητροπολιτών και επισκόπων), αποφάσεις και διατάγματα της Βενετίας αναφορικά με την οργάνωση των κατά τόπους εκκλησιών, εκκλησιαστικές έριδες, η συμμετοχή του λαού στην ανάδειξη των παραπάνω επικεφαλής και στην διοίκηση της Εκκλησίας, καθώς και στον ενοριακό τρόπο ζωής και οργάνωσης
The Heart-shaped Supernova Remnant 3C391 viewed in Multi-bands
Creators: name: Su, Yang
name: Chen, Yang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using Chandra X-ray, Spitzer mid-IR, and 1.5 GHz radio data, we examine the spatial structure of SNR 3C391. The X-ray surface brightness is generally anti-correlative with the IR and radio brightness. The multiband data clearly exhibit a heart-shaped morphology and show the multi-shell structure of the remnant. A thin brace-like shell on the south detected at 24 um is projected outside the radio border and confines the southern faint X-ray emission. The leading 24 um knot on the SE boundary appears to be partly surrounded by soft X-ray emitting gas. The mid-IR emission is dominated by the contribution of the shocked dust grains, which may have been partly destroyed by sputtering.
description: 11 pages (including 4 figures in color), accepted for publication in AdSpR
Real-time intelligent behaviour in dynamic environments : soccer-playing robots
Creators: name: Sahota, Michael K.
Publisher: name: University of British Columbia
Year: 2008

description: An autonomous robot operating in a dynamic environment is confronted by the question of, "What to do now?" The problem of designing a controller for a car-like robot competing with another robot in a game of soccer is considered. This is a dynamic environment; the locations of the ball and the robots are constantly changing. Rapid and appropriate responses to changes in the world are central to intelligent behaviour. There are no established robot architectures that seem adequate for the challenges posed in dynamic domains. Traditional work in Artificial Intelligence has focused on the construction of plans for future execution and has resulted in architectures that are not extensible to dynamic environments. Even recently developed "reactive" architectures such as the subsumption architecture, situated automata, and RAP do not seem satisfactory. Reactive deliberation has been designed to present a set of structural elements needed in dynamic domains. Reactive deliberation makes three contributions to robot architecture. First, the decisions of what task to achieve and how to achieve it are best resolved in unison. Second, the transient goals of a robot must be evaluated at a rate commensurate with changes in the environment. Third, goal-oriented modules called behaviours are a useful abstraction that allow effective goal-arbitration and sharing of scarce computational resources. The effectiveness of reactive deliberation has been demonstrated through a tournament of one-on-one soccer games between robots. Current functionality includes motion planning, ball shooting, and playing goal, with accurate motion control at speeds of 1 m/s. The results of the soccer tournament suggest that the architectural elements in reactive deliberation are sufficient for real-time intelligent control in dynamic environments.
An Evaluation of Incentive Experiments in a Two-Phase Address-Based Sample Mail Survey
Creators: name: Han, Daifeng
name: Montaquila, Jill M.
name: Brick, J. Michael
Publisher: name: European Survey Research Association
Year: 2013
Subjects: response rate; prepaid; subpopulation; sample composition; data collection cost

description: Address-based sampling (ABS) with a two-phase data collection approach has emerged as a promising alternative to random digit dial (RDD) surveys for studying specific subpopulations in the United States. In 2011, the National Household Education Surveys Program Field Test used a two-phase ABS design with a postal or mail screener to identify households with eligible children and a mail topical questionnaire administered to parents of sampled children to collect measures of interest. Experiments with prepaid cash incentives and special mail delivery methods were applied in both phases. For the screener, sampled addresses were randomly designated to receive either $2 or $5 in the initial mailing. During the topical phase, incentives (ranging from $0 to $20) and delivery methods (First Class Mail or Priority Mail) were assigned randomly but depended on how quickly the household had responded to the screener. The paper first evaluates the effects of incentives on response rates, and then examines incentive levels for attracting the hard-to-reach groups and improving sample composition. The impact of incentive on data collection cost is also examined.
description: Survey Research Methods, Vol 7, No 3 (2013)
Establishing and managing understorey crops in alley cropping systems - Optymalne wykorzystanie przestrzeni: wprowadzanie i zarządzanie roślinnością warstwy podokapowej w systemach alejowych
Creators: name: Smith Jo
name: Westaway Sally
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity; productivity; efficiency; alley cropping; silvoarable
bioróżnorodność
produktywność
wydajność
system alejowy
drzewno-orny

description: Sadzenie drzew na polach uprawnych czy warzywnych oznacza wyłączenie tego obszaru z rocznej produkcji; w zależności od projektu systemu, może on obejmować do 20% obszaru uprawnego. W wielu systemach rolno-leśnych obszar pomiędzy drzewami i pod koroną drzew nie jest użytkowany ani zarządzany, co może powodować problemy z zachwaszczeniem. Możliwym rozwiązaniem jest zasadzenie alternatywnych roślin uprawnych w rzędach drzew w celu zapewnienia przychodu w latach tuż po posadzeniu drzew lub dłużej, jeśli użyte zostaną gatunki odporne na zacienienie.Poza ogólnym wzrostem produktywności, dodatkową korzyść stanowi zróżnicowanie uzyskanych produktów.
Sensitive Topics in PC Web and Mobile Web Surveys: Is There a Difference?
Creators: name: Mavletova, Aigul
name: Couper, Mick P.
Publisher: name: European Survey Research Association
Year: 2013
Subjects: Web surveys, mobile Web surveys, data quality, sensitive questions, perceived privacy, presence of bystanders, interview setting.

description: A large number of findings in survey research suggest that misreporting in sensitive questions is situational and can vary in relation to context. The methodological literature demonstrates that social desirability biases are less prevalent in self-administered surveys, particularly in Web surveys, when there is no interviewer and less risk of presenting oneself in an unfavorable light. Since there is a growing number of users of mobile Web browsers, we focused our study on the effects of different devices (PC or cell phone) in Web surveys on the respondents’ willingness to report sensitive information. To reduce selection bias, we carried out a two-wave cross-over experiment using a volunteer online access-panel in Russia. Participants were asked to complete the questionnaire in both survey modes: PC and mobile Web survey. We hypothesized that features of mobile Web usage may affect response accuracy and lead to more socially desirable responses compared to the PC Web survey mode. We found significant differences in the reporting of alcohol consumption by mode, consistent with our hypothesis.  But other sensitive questions did not show similar effects. We also found that the presence of familiar bystanders had an impact on the responses, while the presence of strangers did not have any significant effect in either survey mode. Contrary to expectations, we did not find evidence of a positive impact of completing the questionnaire at home and trust in data confidentiality on the level of reporting.  These results could help survey practitioners to design and improve data quality in Web surveys completed on different devices.
description: Survey Research Methods, Vol 7, No 3 (2013)
Optical polarimetry and infrared photometry of two AM Her binaries: 1RXS J161008.0+035222 and 1RXS J231603.9-052713
Creators: name: Rodrigues, C. V.
name: Jablonski, F. J.
name: D'Amico, F.
name: Cieslinski, D.
name: Steiner, J. E.
name: Diaz, M. P.
name: Hickel, G. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first optical circular and linear polarization measurements of two polar candidates from ROSAT: 1RXS J161008.0+035222 and 1RXS J231603.9-052713. We also present H band near-infrared photometry of the last object. The presence of strong circular polarization confirms them as AM Her systems. 1RXS J231603.9-052713 was observed in two different brightness states. The orbital phase dependence of the flux and polarization of 1RXS J161008.0+035222 is reasonably fitted with a simple model in which the binary is observed at a small inclination and the magnetic field axis is almost parallel to the white-dwarf rotation axis resulting in the accretion column axis being seen from top during the whole orbital revolution. The magnetic field is probably in the 10 to 20 MG range. The circular polarization of 1RXS J231603.9-052713 is complex and highly variable. The light-curves of that object have been fitted using a model which includes the white-dwarf, a heated secondary and a point-like accretion region. The secondary emission contributes significantly even in optical wavelengths. This model also reproduces the main features of the optical polarization of 1RXS J231603.9-052713. We estimate the main parameters of the binary, of the accretion region and the distance to the system. However, a more precise interpretation of this system should take in account an extended and inhomogeneous accreting region as well as non-radial accretion.
description: MNRAS accepted
El papel de la cultura en ELE y L2 desde una perspectiva etnográfica
Creators: name: De Jesús Rabaza Torres, Manuel
Publisher: name: Zenodo
Year: 2022
Subjects: Cultura, Lengua, Comunicación, Intercultural

description: El tema del presente trabajo es el proceso de enseñanza/aprendizaje (PEA) del Español como Lengua Extranjera (ELE) o Segunda Lengua (L2) en la Facultad de Español para No Hispanohablantes (FENHI) de la Universidad de La Habana. El primer objetivo del artículo consiste en explicar las ventajas que supondría la introducción de la enseñanza de los fundamentos de la antropología sociocultural, así como de las técnicas de la etnografía de la comunicación en el PEA de ELE y L2 en esa institución docente. Esta adición permitiría alcanzar una adecuada relación intercultural que pondría fin a la actitud mimética y de subordinación de los estudiantes y egresados de la carrera hacia la sociedad y la cultura matrices de la lengua meta, heredadas de la concepción de la categoría Competencia Comunicativa del método comunicativo. El segundo objetivo reside en explicar los beneficios de la sustitución de la Competencia Comunicativa por la Competencia Comunicativa Intercultural –que la comprende– como objetivo central del PEA de ELE, de forma que se sustituya al mediador lingüístico (traductor/intérprete) por la figura del mediador intercultural que lo desborda, y de esa manera, posicionar la carrera en un nuevo nicho del mercado internacional de servicios académicos, reportando mayor visibilidad a la FENHI, a la Universidad de La Habana y un incremento sustancial de ingresos al sistema. La propuesta se sustenta en los resultados de numerosas investigaciones cuyos autores son mencionados a manera de referente. Los métodos utilizados fueron el histórico-lógico, el de análisis-síntesis, la investigación bibliográfica y documental, el enfoque en sistema y la teoría fundamentada.
A Preliminary Chandra X-ray Spectroscopy of the Supernova Remnant N132D
Creators: name: Xiao, Xiao
name: Chen, Yang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the preliminary results of a Chandra X-ray study of N132D, a young shell-like supernova remnant (SNR) in the Large Magellanic Cloud. The equivalent width maps of emissions from O, Ne, Mg, Si, and S are provided. Spatially resolved spectral analysis for the small-scale regions were tentatively performed. The X-ray spectra of the interior can be described with a single-thermal model. The faint interior regions have lower density and higher temperature (above 1keV) than those of bright interior regions. The X-ray spectra along the shell can be phenomenally fitted with either a double-vpshock model or a vpshock + powerlaw model. If the non-thermal component is true, N132D would be listed as another X-ray synchrotron SNR.
description: 14 pages (including 9 figures), accepted for publication in AdSpR
Is the Sky Falling?  New Technology, Changing Media, and the Future of Surveys
Creators: name: Couper, Mick P.
Publisher: name: European Survey Research Association
Year: 2013
Subjects: big data; organic data; social media; mobile surveys; non-probability surveys

description: In this paper I review three key technology-related trends: 1) big data, 2) non-probability samples, and 3) mobile data collection.  I focus on the implications of these trends for survey research and the research profession.  With regard to big data, I review a number of concerns that need to be addressed, and argue for a balanced and careful evaluation of the role that big data can play in the future.  I argue that these developments are unlikely to replace transitional survey data collection, but will supplement surveys and expand the range of research methods.  I also argue for the need for the survey research profession to adapt to changing circumstances.
description: Survey Research Methods, Vol 7, No 3 (2013)
Transverse double-spin asymmetries for small $Q_T$ Drell-Yan pair production in $pp$ and $p\bar{p}$ collisions
Creators: name: Kawamura, Hiroyuki
name: Kodaira, Jiro
name: Tanaka, Kazuhiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss transverse double-spin asymmetries for dimuon production at small transverse-momentum $Q_T$ in $pp$ and $p\bar{p}$ collisions. All order resummation of large logarithms relevant in small $Q_T$ region is performed at next-to-leading logarithmic (NLL) accuracy, and asymmetries at RHIC, J-PARC and GSI are calculated.
description: 4 pages, 2 figures, Talk given at DIS06, April 20-24, 2006, Tsukuba, Japan