cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Productivity Effects of Sustainable Intensification: The Case of Urea Deep Placement for Rice Production in Niger State, Nigeria
Creators: name: Liverpool- Tasie, Lenis Saweda O.
name: Adjognon, Serge
name: Kuku-Shittu, Oluyemisi
name: Liverpool- Tasie, Lenis Saweda O.
name: Adjognon, Serge
name: Kuku-Shittu, Oluyemisi
Publisher: name: Unknown
Year: 2015
Subjects: International Relations/Trade
Productivity Analysis

description: This paper uses household data to explore the yield effects of an intensification practice called urea deep placement (UDP) in Nigeria. The propensity score matching and instrumental variables methods provide consistent evidence of a positive and significant effect of UDP on rice yields. The Rosenbaum sensitivity analysis reveals that these results are not likely driven by unobservable factors. The paper also finds that farmers’ yields are further enhanced by adhering to several prescribed practices, confirming the potential for UDP to significantly improve rice yields.
Reflection matrix approach for quantitative imaging of scattering media
Creators: name: Lambert, William
name: Cobus, Laura A.
name: Couade, Mathieu
name: Fink, Mathias
name: Aubry, Alexandre
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We present a physically intuitive matrix approach for wave imaging and characterization in scattering media. The experimental proof-of-concept is performed with ultrasonic waves, but this approach can be applied to any field of wave physics for which multi-element technology is available. The concept is that focused beamforming enables the synthesis, in transmit and receive, of an array of virtual transducers which map the entire medium to be imaged. The inter-element responses of this virtual array form a focused reflection matrix from which spatial maps of various characteristics of the propagating wave can be retrieved. Here we demonstrate: (i) a local focusing criterion that enables the image quality and the wave velocity to be evaluated everywhere inside the medium, including in random speckle, and (ii) an highly resolved spatial mapping of the prevalence of multiple scattering, which constitutes a new and unique contrast for ultrasonic imaging. The approach is demonstrated for a controllable phantom system, and for in vivo imaging of the human abdomen. More generally, this matrix approach opens an original and powerful route for quantitative imaging in wave physics.
description: 18 pages, 6 figures
Optimal $L^2$ extension of sections from subvarieties in weakly pseudoconvex manifolds
Creators: name: Zhou, Xiangyu
name: Zhu, Langfeng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Complex Variables (math.CV)
subject: Algebraic Geometry (math.AG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper, we obtain optimal $L^2$ extension of holomorphic sections of a holomorphic vector bundle from subvarieties in weakly pseudoconvex Kähler manifolds. Moreover, in the case of line bundle the Hermitian metric is allowed to be singular.
Ionization of clusters in strong X-ray laser pulses
Creators: name: Saalmann, Ulf
name: Rost, Jan M
Publisher: name: arXiv
Year: 2002
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The effect of intense X-ray laser interaction on argon clusters is studied theoretically with a mixed quantum/classical approach. In comparison to a single atom we find that ionization of the cluster is suppressed, which is in striking contrast to the observed behavior of rare-gas clusters in intense optical laser pulses. We have identified two effects responsible for this phenomenon: A high space charge of the cluster in combination with a small quiver amplitude and delocalization of electrons in the cluster. We elucidate their impact for different field strengths and cluster sizes.
description: 4 pages, 4 figures
A dynamic Gaussian process surrogate model based on the grasshopper optimization algorithm for non-probabilistic reliability analysis of complex structures
Creators: name: Wang, Junmu
name: Su, Guoshao
name: Hao, Junmeng
Publisher: name: Taylor & Francis
Year: 2023
Subjects: Biophysics
Space Science
Mathematical Sciences not elsewhere classified

description: In practical complex engineering structures, the performance function (PF) for reliability analysis is commonly implicit and highly nonlinear. Commonly used surrogate models are appropriate for structural reliability analysis with an implicit PF. However, these methods require hundreds of PF values, which are time-consuming to obtain by adopting numerical analysis, such as finite element analysis (FEA). Therefore, since non-probabilistic reliability analysis does not require a large number of samples, it has great development potential. In this paper, a dynamic Gaussian process (GP) surrogate model based on the grasshopper optimization algorithm (DGP-GOA) is proposed for the non-probabilistic reliability analysis. First, with the help of the scale factor of the convex set model, the non-probabilistic reliability analysis problem is transformed into an unconstrained optimization problem. Second, the DGP-GOA fits the PF by constructing a GP surrogate model with a small dataset. Third, the GOA is used to search for the global optimal solution to obtain a non-probabilistic reliability index. Then, a dynamic retraining strategy is proposed to improve the fitting accuracy and efficiency. The results demonstrate that the proposed method is highly applicable to the non-probabilistic structural reliability analysis of complex engineering structures.
Constraining Screened Modified Gravity by Space-borne Gravitational-wave Detectors
Creators: name: Niu, Rui
name: Zhang, Xing
name: Liu, Tan
name: Yu, Jiming
name: Wang, Bo
name: Zhao, Wen
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The screened modified gravity (SMG) is a unified theoretical framework, which describes the scalar-tensor gravity with screening mechanism. Based on the gravitational-wave (GW) waveform derived in our previous work \citep{liu2018waveforms}, in this article we investigate the potential constraints on SMG theory through the GW observation of the future space-borne GW detectors, including LISA, TianQin and Taiji. We find that, for the EMRIs consisting of a massive black hole and a neutron star, if the EMRIs are at Virgo cluster, the GW signals can be detected by the detectors at quite high significant level, and the screened parameter $ε_{\rm NS}$ can be constrained at about $\mathcal{O}(10^{-5})$, which is more than one order of magnitude tighter than the potential constraint given by ground-based Einstein telescope. However, for the EMRIs consisting of a massive black hole and a white dwarf, it is more difficult to be detected than the previous case. For the specific SMG models, including chameleon, symmetron and dilaton, we find these constraints are complementary with that from Cassini experiment, but weaker than those from lunar laser ranging observations and binary pulsars, due to the strong gravitational potentials on the surface of neutron stars. By analyzing the deviation of GW waveform in SMG from that in general relativity, as anticipated, we find the dominant contribution of the SMG constraining comes from the correction terms in the GW phases, rather than the extra polarization modes or the correction terms in the GW amplitudes.
description: 47 pages, 5 figures; matches accepted version
Synthesis and characterisation of peptide-based probes for quantitative multicolour STORM imaging
Creators: name: Taylor, Edward John Robert
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: STORM
nanobody
fluorescence microscopy
super-resolution
anti-GFP nanobody
anti-mCherry nanobody
Native Chemical Ligation
stoichiometric labelling
quantification
multicolour STORM

description: Summary of synthesis and characterisation of peptide-based probes for quantitative multicolour STORM imaging by Edward Taylor Current single molecule localisation microscopy methods allow for multicolour imaging of macromolecules in cells, and for a degree quantification on molecule numbers in one colour. However, that has not yet been an attempt to develop tools capable of quantitative imaging with multiple colours in cells. This work addressed this challenge by designing linker peptides with chemospecific groups to allow attachment of activator and emitter dyes for STORM imaging, and a targeting module. The design ensured a stoichiometric ratio of targeting module to activator and emitter dyes. Peptides with HaloTag ligands attached were labelled with various activator and emitter pairs and used to label HaloTag fusions of S. pombe and mouse embryonic stem cells. These peptides were found to bind non-specifically to various areas of both cell types, and did not localise to HaloTag protein, whereas controls did. Another peptide was also labelled with activator-emitter pairs and attached to expressed anti-GFP and ant-mCherry nanobodies via native chemical ligation. The labelled anti-GFP nanobody was to demonstrate ensemble and single molecule imaging in S. pombe, as well as characterisation on single molecule surfaces in comparison to a conventional randomly labelled antibody. The stoichiometrically labelled nanobody had a more consistent number of photons detected per localisation, number of localisation per molecule and number of blinks per molecule, which implied that it could be more useful than randomly labelled nanobodies for counting experiments. It was also shown to be capable of specific laser activation for STORM imaging with both an Alexa405Cy5 and Cy3Cy5 pairs. These anti-GFP and anti-mCherry nanobodies and peptide linker are new tools for both counting and multicolour imaging in super-resolution, which could be widely applied to constructs that are already tagged with GFP or mCherry.
description: European 4D CellFate Grant
Remarks on the experimental behaviour of curved surface sliders of the new Polcevera Bridge in Genoa
Creators: name: Miano, Andrea
name: Cademartori, Marcello
name: Fiorillo, Antimo
name: Figundio, Angelo
name: Di Ludovico, Marco
name: Prota, Andrea
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: This work presents the results of the procedure of certification and acceptance for the sliding behavior of non-standard devices curved surface sliders, used for the seismic isolation of the New Polcevera Bridge. Indeed, the deck is seismically isolated from the piers. The supporting scheme withstands the seismic actions, wind actions and thermal actions, very relevant in a 1067 m length bridge without middle expansion joints. The paper aim is to describe the approach followed during the construction supervision process for the functional certification and acceptance tests of the bearing devices coherently with Italian and European codes. The paper highlights the main issues encountered during the application of the different specifications. A description of the different functional tests required during the construction supervision process is presented as well as an overview of the different acceptance criteria of the tests results. The intent is to prepare a series of useful recommendations for the definition of the seismic acceptance tests for bearing devices for highway bridges in Italian and European contest. Finally, all the results regarding the static and dynamic frictional coefficients, have been used to derive regressions laws, by also comparing them with the outcomes of previous literature studies.
title: Steve Jobs or No Jobs? Entrepreneurial activity and performance among Danish college dropouts and graduates
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Buenstorf, Guido
name: Nielsen, Kristian
name: Timmermans, Bram
Publisher: name: Philipps-Universität Marburg
Year: 2016
Subjects: higher education
returns to entrepreneurship.
college dropouts
Economics
Wirtschaft
entrepreneurship

description: Are college dropouts successful entrepreneurs? Other than anecdotal evidence on illustrious college dropouts who managed to become self-made billionaires, there is only limited empirical evidence to answer this question. This paper addresses this issue by investigating the relationship between college dropout or graduation and entrepreneurship activity as well as performance. Using information from the Danish labor market register, we identify college students, whether these students graduate, and if they registered a new venture. We find that a larger share of dropouts starts a business, but this reflects the endogeneity of the decision to exit from college. On average, becoming an entrepreneur does not allow dropouts to escape from their punishment in the labor market.
title: Misconduct and Leader Behaviour in Contests– New Evidence from European Football
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Kempa, Karol
name: Rusch, Hannes
Publisher: name: Philipps-Universität Marburg
Year: 2016
Subjects: Leadership
Sabotage
Football.
Dissent
Economics
Wirtschaft
Contest

description: This paper provides an empirical investigation of severe misconducts in contests based on data from European football championships. We extend previous studies by differentiating between two types of misconducts both resulting in a yellow card, namely dissents with the referee and other misconducts. Confirming the existing literature, we find that teams with lower ability are more likely to commit sabotage, i.e. fouls, to reduce the opponent’s chances for success. Sabotage is also more likely when the outcome of the contests is still open. In addition, we find that dissents with the referee are significantly more likely in the case of an unfavourable score. We introduce a new perspective to the study of football data by distinguishing misconducts of team captains from those of other players. We find that captains engage more in sabotage during important matches and challenge referees’ decisions in direct reaction to sanctions awarded to teammates. In contrast to regular players, however, captains do not participate in the escalation of series of retaliative misconducts. Finally, our analyses indicate that all types of misconduct have a negative effect on the likelihood of success.
What are the barriers to building a trusted police service in China and India? A Comparative Study
Creators: name: Lee, George Chak Man Christopher
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: subject: Development Studies
subject: Criminology
subject: FOS: Law
subject: Police Studies
subject: Decision making
subject: Organisational culture and behaviour
subject: India
subject: China
subject: Comparative Study - China/India
subject: Corruption and malpractice
subject: Police Culture and decision making
subject: Police trust
subject: Economic Modernisation China/India
subject: Urbanisation and crime
subject: Treatment of minorities in China and India
subject: Rural urban migration in China and India

description: This thesis attempts to identify what the barriers to building a trusted police service in China and India are through answering the questions: How has economic modernisation impacted upon policing? To what extent are the two police forces trusted by its citizens? Do the police carry out their duties in a fair and unbiased fashion? What do police corruption/malpractices look like and why does it persist? And what are the influencing factors in decision-making at the moments-of-truth? There is very limited research into the Chinese Police generally and even less on factors affecting organisational culture, practices, and decision making. There is no comparative study between the Chinese and Indian Police. This thesis found that the Chinese Police are held in higher esteem than the Indian Police by their respective citizenry. Both the Chinese and Indian police use stereotypes and are biased against certain section of society in the way they carry out their duties and that corruption and malpractices are tolerated and engrained in its culture but is subtler in China than in India. However, one surprised finding is that India is more at risk of the rule by man than China, even though India is said to be the world’s largest democracy grounded on the principles of the rule of law.
description: SMUT Fund; POLIS and DS Field research funds; Trinity College field work fund.
MOESM1 of Temporal change of near-surface shear wave velocity associated with rainfall in Northeast Honshu, Japan
Creators: name: Miao, Yu
name: Shi, Yang
name: Wang, Su-Yang
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Fig.Â S1. Relationships between the relative velocity change and the rainfall classes for different accumulated periods of rainfall amounts.
title: Survey on New Zealanders’ Attitudes Towards and Knowledge of Macroeconomic Policy Issues: Documentation of Survey Methodology and Descriptive Results
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Hayo, Bernd
name: Neumeier, Florian
Publisher: name: Philipps-Universität Marburg
Year: 2016
Subjects: Economics
Wirtschaft
Household survey ∙ New Zealand ∙ Fiscal policy ∙ Public debt ∙ Monetary policy ∙ Public preferences ∙ Economic literacy

description: This paper provides background information and basic descriptive statistics for a representative survey of the New Zealand population conducted on our behalf by Research New Zealand in May 2016. The survey addresses important fiscal and monetary policy issues, including: (1) public preferences for public debt and fiscal consolidation; (2) awareness of the government’s Fiscal Strategy Report; (3) citizens’ monitoring of and reaction to inflation and their inflation expectation formation; (4) knowledge and support for the Policy Target Agreement between the Reserve Bank of New Zealand and the government; (5) trust in economic institutions; and (6) indicators for (macro)economic literacy, that is, objective and subjective knowledge about variables and institutions relevant for macroeconomic policy.
title: Causes of the 2000s Food Price Surge: New Evidence fromStructural VAR
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Grabowski, Daniel
Publisher: name: Philipps-Universität Marburg
Year: 2016
Subjects: sign restrictions
food price crisis
Economics
Wirtschaft
structural VAR
grain prices

description: In 2001 began a rise in the prices of food commodities not seen since the
1970s. Some observers attribute the increase in part to food commodity spec-
ulation. This hypothesis is examined by disentangling the impact of specu-
lation on grain prices from that of fundamental supply and demand forces.
Even though results point to a generally stabilising in uence of speculation on prices, speculation is shown to have pushed prices further up during crisis years. The analysis is based on a structural vector autoregressive model identified by sign and zero restrictions. The model is estimated for global corn,
wheat and rice markets.
Two-loop N=4 Super Yang Mills effective action and interaction between D3-branes
Creators: name: Buchbinder, I. L.
name: Petrov, A. Yu.
name: Tseytlin, A. A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the leading low-energy term in the planar part of the 2-loop contribution to the effective action of $\N=4$ SYM theory in 4 dimensions, assuming that the gauge group $SU(N+1)$ is broken to $SU(N) x U(1)$ by a constant scalar background $X$. While the leading 1-loop correction is the familiar $c_1 F^4/|X|^4$ term, the 2-loop expression starts with $c_2 F^6/|X|^8$. The 1-loop constant $c_1$ is known to be equal to the coefficient of the $F^4$ term in the Born-Infeld action for a probe D3-brane separated by distance $|X|$ from a large number $N$ of coincident D3-branes. We show that the same is true also for the 2-loop constant $c_2$: it matches the coefficient of the $F^6$ term in the D3-brane probe action. In the context of the AdS/CFT correspondence, this agreement suggests a non-renormalization of the coefficient of the $F^6$ term beyond two loops. Thus the result of hep-th/9706072 about the agreement between the $v^6$ term in the D0-brane supergravity interaction potential and the corresponding 2-loop term in the 1+0 dimensional reduction of $\N=4$ SYM theory has indeed a direct generalization to 1+3 dimensions, as conjectured earlier in hep-th/9709087. We also discuss the issue of gauge theory -- supergravity correspondence for higher order ($F^8$, etc.) terms.
description: 33 pages, latex
Light-Cone Sum Rules for $B\to Kπ$ Form Factors and Applications to Rare Decays
Creators: name: Descotes-Genon, Sébastien
name: Khodjamirian, Alexander
name: Virto, Javier
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive a set of light-cone sum rules relating the hadronic form factors relevant for $B\to Kπ\ell^+\ell^-$ decays to the $B$-meson light-cone distribution amplitudes (LCDAs). We obtain the sum rule relations for all $B\to Kπ$ form factors of (axial)vector and (pseudo)tensor $b\to s$ currents with a $P$-wave $Kπ$ system. Our results reduce to the known light-cone sum rules for $B\to K^*$ form factors in the limit of a single narrow-width resonance. We update the operator-product expansion for the underlying correlation function by including a more complete set of $B$-meson LCDAs with higher twists, and produce numerical results for all $B\to K^*$ form factors in the narrow-width limit. We then use the new sum rules to estimate the effect of a non-vanishing $K^*$ width in $B\to K^*$ transitions, and find that this effect is universal and increases the factorizable part of the rate of $B\to K^*X$ decays by a factor of $20\%$. This effect, by itself, goes in the direction of increasing the current tension in the differential $B\to K^*μμ$ branching fractions. We also discuss $B\to Kπ$ transitions outside the $K^*$ window, and explain how measurements of $B\to Kπ\ell\ell$ observables above the $K^*$ region can be used to further constrain the $B\to K^*$ form factors.
description: 75 pages. Version published in JHEP, with minor editions in the text with respect to v1
Symbiotic stars on Asiago archive plates. II
Creators: name: Munari, Ulisse
name: Jurdana-Sepic, Rajka
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Asiago photographic archive has been searched for plates containing the symbiotic stars Hen 2-468, QW Sge, LT Del, V407 Cyg, K 3-9, V335 Vul, FG Ser and Draco C-1. A total of 635 plates imaging the program stars have been found and the brightness estimated using the Henden & Munari (2000) UBVRI photometric sequences. These historical data have allowed for the first time the determination of the orbital periods of Hen 2-468 (774 days) and QW Sge (390.5 days), a significant improvement in the orbital period of LT Del (465.6 days) and for V407 Cyg an evaluation of the Mira's pulsation period and complex lightcurve shape in the red (R and I bands). Some previously unknown outbursts have been discovered too. (Paper I: Munari et al. 2001, A&A 370, 503)
description: A&A, in press
Energetics and Structural Aspects of Cation-Coupled Drug Transport by NorM Multidrug Transporters
Creators: name: Raturi, Sagar
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: Multi-drug Transporters
NorM
MATE transporters

description: NorM multidrug transport proteins belong to the multiple antibiotics and toxins extrusion (MATE) family of secondary active transporters. Members of this family are present across all species including bacteria, plants and humans. In bacteria, their over-expression can lead to antibiotic resistance, whereas in the human body, the transporters can alter the plasma levels of drugs. NorM proteins are therefore relevant for the pharmacokinetic properties of drugs. Previously, NorM from Vibrio cholerae (NorM-VC) was shown to export drug (ethidium) in an antiport reaction that is coupled to the simultaneous uptake of protons and sodium ions down their electrochemical gradients across the plasma membrane. But NorM from Pseudomonas stutzeri (NorM-PS) was shown to transport DAPI by utilising proton cycling exclusively. NorM-VC and NorM-PS share 42% identical amino-acid residues and yet their functions differ in terms of their ion coupling properties. These differences in functionality of two highly homologous proteins provide an excellent opportunity to carry out a comparative study. The work presented in this thesis investigates the energetics of drug transport processes by NorM-VC and NorM-PS and the structural basis for ion-coupled drug transport by NorM-VC. Ethidium efflux assays in intact Lactococcus lactis cells were used to study the effect of the magnitude and composition of the proton- and sodium-motive force on transport activity. Furthermore, ethidium binding assays were used to study partial reactions in drug efflux processes. These biochemical data were supplemented by computational studies and analyses of current protein structures. Based on the observations detailed here, a novel transport model for NorM-VC is proposed, which explains published findings for NorM-VC and other MATE transporters. The model represents a potentially universal mechanism for MATE transporters that can be used to predict further structure-function relationships in this important family of member transporters.
description: Cambridge Commonwealth Trust, Nehru Trust for Cambridge University
Subthreshold dynamics of the neural membrane potential driven by stochastic synaptic input
Creators: name: Hillenbrand, Ulrich
Publisher: name: arXiv
Year: 2002
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In the cerebral cortex, neurons are subject to a continuous bombardment of synaptic inputs originating from the network's background activity. This leads to ongoing, mostly subthreshold membrane dynamics that depends on the statistics of the background activity and of the synapses made on a neuron. Subthreshold membrane polarization is, in turn, a potent modulator of neural responses. The present paper analyzes the subthreshold dynamics of the neural membrane potential driven by synaptic inputs of stationary statistics. Synaptic inputs are considered in linear interaction. The analysis identifies regimes of input statistics which give rise to stationary, fluctuating, oscillatory, and unstable dynamics. In particular, I show that (i) mere noise inputs can drive the membrane potential into sustained, quasiperiodic oscillations (noise-driven oscillations), in the absence of a stimulus-derived, intraneural, or network pacemaker; (ii) adding hyperpolarizing to depolarizing synaptic input can increase neural activity (hyperpolarization-induced activity), in the absence of hyperpolarization-activated currents.
description: 16 pages, 7 figures
title: Partial cross ownership and collusion
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: de Haas, Samuel
name: Paha, Johannes
Publisher: name: Philipps-Universität Marburg
Year: 2016
Subjects: Merger Control
Unilateral Effects
Economics
Wirtschaft
Coordinated Effects
Minority Shareholdings
Collusion

description: This article finds that non-controlling minority shareholdings among competitors lower the sustainability of collusion. This is the case under an even greater variety of situations than was indicated by earlier literature. The collusion destabilizing effect of minority shareholdings is mainly caused by their unilateral effects, and it is particularly prevalent in the presence of an effective antitrust authority.
Glossomaera Krapp-Schickel 2009, gen. nov.
Creators: name: Krapp-Schickel, Traudl
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Maeridae
Glossomaera

description: Glossomaera gen. nov.
 Type species. Maera octodens Sivaprakasam, 1968.
 Etymology. From the Greek "glossa" meaning "tongue" referring to the thickened upper lip.
 Diagnosis. Eyes oval. Lateral cephalic lobe broad, with anteroventral notch, anteroventral corner subquadrate. Upper lip thickened. Mandible palp article 3 subequal to article 2; maxilla 1 inner plate slender, maxilla 2 inner plate without mediofacial row of setae. Gnathopod 2 asymmetrical. Pereopod bases distally narrowing. Epimera 1–2 without shallow excavation posterodistally, epimeron 3 serrate on posterior margin. Telson lobes with shallow excavation distally.
 Included species. G. octodens (Sivaprakasam, 1968); G. lindsae (Myers, 1989).
 Remarks. The type species was added to Linguimaera by Lowry & Springthorpe (2005: 3), but some characters do not match to this otherwise quite homogeneous genus (see also below): the eyes are roundedoval (vs. reniform in all Linguimaera), mandible palp article 3 is subequal in length to article 2 (always clearly shorter in Linguimaera), epimera 1 and 2 have a sharply pointed posterodistal corner (blunt corners followed by a characteristic shallow excavation in Linguimaera).
description: Published as part of Krapp-Schickel, Traudl, 2009, Maeridae, the Ceradocus group *, pp. 598-642 in Zootaxa 2260 (1) on page 614, DOI: 10.11646/zootaxa.2260.1.32, http://zenodo.org/record/5309853
Metadata supporting data files in the published article: Androgen receptor gene expression in primary breast cancer: correlations with clinical features, tumor characteristics, patient outcomes, and other breast-cancer related genes
Creators: name: Vidula, Neelima
name: Yau, Christina
name: Wolf, Denise
name: Rugo, Hope S.
Publisher: name: figshare
Year: 2020
Subjects: subject: Cancer
subject: Genetics
subject: FOS: Biological sciences
subject: Medicine
subject: 111203 Cancer Genetics
subject: FOS: Clinical medicine

description: In this paper, the authors studied androgen receptor (AR) gene expression in primary breast cancer (BC) to determine associations with clinical characteristics and outcomes in the I-SPY 1 (Investigation of Serial Studies to Predict Your Therapeutic Response With Imaging and Molecular Analysis) study.
 Data access: The study used publically available datasets. I-SPY 1 datasets were accessed from the NCBI Gene Expression Omnibus (GEO) repository: https://identifiers.org/geo:GSE22226. TCGA gene expression data were accessed from the cBioPortal for Cancer Genomics: https://identifiers.org/cbioportal:brca_tcga_pub2015. METABRIC gene expression data were accessed from the European Genome-phenome Archive (EGA): https://identifiers.org/ega.dataset:EGAD00010000210 and https://identifiers.org/ega.dataset:EGAD00010000211.
 Study aims and methodology: The purpose of this study was to examine androgen receptor (AR) gene expression in primary breast cancer (BC) to determine associations with clinical characteristics and outcomes in the I-SPY 1 study. AR was evaluated in I-SPY 1 (n=149) using expression microarrays. Associations of AR with clinical and tumor features were determined using the Wilcoxon rank sum test or the Kruskal-Wallis test. The authors identified an optimal AR cut-point to maximize recurrence-free survival (RFS) differences between AR biomarker stratified groups, and assessed the association between the AR stratified groups and RFS using the Cox proportional hazard model. Pearson correlations between AR and selected genes were determined in I-SPY 1, METABRIC (n=1992), and TCGA (n=817).
 Datasets supporting the figures and tables in the published article:
 Dataset names, formats and persistent links to datasets are provided in the file Vidula et al.xlsx
title: The Exploration of Neurophysiological Spike Train Data using Visual Analytics
Creators: name: Somerville, Jared
Publisher: name: University of Plymouth
Year: 2011
Subjects: Neuroscience
Spiketrain
CCF
Correlation
Functional Connectivity
Neurigma
iRaster
Raster Plot
Correlation Grid
iGrid
Correlation Plot
Network Diagram
Visual Analytics
Information Visualisation

description: The file(s) associated with this record are no longer available. [jc][04.02.2013]
description: Neuroscientists are increasingly overwhelmed by new recordings of the nervous system. These recordings are significantly increasing in size due to new electrophysiological techniques, such as multi-electrode arrays. These techniques can simultaneously record the electrical activity (or spike trains) from thousands of neurons. These new datasets are larger than the traditional datasets recorded from single electrodes where fewer than ten spike trains are usually recorded. Consequently, new tools are now required to effectively analyse these new datasets. This thesis describes how techniques from the field of Visual Analytics can be applied to detect specific patterns in spike train data. These techniques are realised in a software tool called Neurigma. Neurigma is a collection of visual representations of spike train data that are unified to provide a coordinated representation of the data. The visual representations within Neurigma include: an interactive raster plot, an improved correlation grid, a novel representation called the correlation plot (which includes a novel coupling estimation algorithm), and a novel network diagram. These views provide insight into spike train data, and particularly, they identify correlated patterns, called functional connectivity. Within this thesis Neurigma is used to analyse synthetically generated datasets and experimental recordings. Three main findings are presented. First, propagating spiral patterns are identified within recordings from the neonatal mouse retina. Second, functional connectivity is identified within the cat visual cortex. Finally, the functional connectivity of a large synthetic dataset, of 1000 spike trains, is accurately classified into direct, indirect and common input coupling.
A double-slit quantum eraser
Creators: name: Walborn, S. P.
name: Cunha, M. O. Terra
name: Padua, S.
name: Monken, C. H.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report a quantum eraser experiment which actually uses a Young double-slit to create interference. The experiment can be considered an optical analogy of an experiment proposed by Scully, Englert and Walther. One photon of an entangled pair is incident on a Young double-slit of appropriate dimensions to create an interference pattern in a distant detection region. Quarter-wave plates, oriented so that their fast axes are orthogonal, are placed in front of each slit to serve as which-path markers. The quarter-wave plates mark the polarization of the interfering photon and thus destroy the interference pattern. To recover interference, we measure the polarization of the other entangled photon. In addition, we perform the experiment under delayed erasure circumstances.
description: 7 pages, 9 figures, Submitted to Phys. Rev. A
Critical endpoint and universality class of neutron $^3P_2$ superfluids in neutron stars
Creators: name: Mizushima, Takeshi
name: Yasui, Shigehiro
name: Nitta, Muneto
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the thermodynamics and critical behavior of neutron $^3P_2$ superfluids in the inner cores of neutron stars. $^3P_2$ superfluids offer a rich phase diagram including uniaxial/biaxial nematic phases, the ferromagnetic phase, and the cyclic phase. Using the Bogoliubov-de Gennes (BdG) equation as superfluid Fermi liquid theory, we show that a strong (weak) magnetic field drives the first (second) order transition from the dihedral-two biaxial nematic phase to dihedral-four biaxial nematic phase in low (high) temperatures, and their phase boundaries are divided by the critical endpoint (CEP). We demonstrate that the set of critical exponents at the CEP satisfies the Rushbrooke, Griffiths, and Widom equalities, indicating a new universality class. At the CEP, the $^3P_2$ superfluid exhibits critical behavior with nontrivial critical exponents, indicating a new universality class. Furthermore, we find that the Ginzburg-Landau (GL) equation up to the 8th-order expansion satisfies three equalities and properly captures the physics of the CEP. This implies that the GL theory can provide a tractable way for understanding critical phenomena which may be realized in the dense core of realistic magnetars.
description: 15 pages, 5 figures
INFLUENCE OF QUERTINE ON THE FREE RADICAL LIPID PEROXIDATION IN PATIENTS WITH URONEPHROLITHIASIS COMORBID WITH METABOLIC SYNDROM
Creators: name: Bilai S. I.
name: Dovbysh M., A.
Publisher: name: Colloquium-journal
Year: 2021
Subjects: quertine
lipid peroxidation
urate nephrolithiasis
metabolic syndrome.

description: The pathogenesis of urolithiasis is partially determined by oxidative stress, whose main cause is an imbalance in the oxidant-antioxidant system, which is manifested by excessive formation of reactive oxygen species and weakening of the effectiveness of antioxidant protection. The research aims to study the effect of quertine on the processes of lipid peroxidation (LPO) in patients with UN comorbid with MS. Patients with UN of Group 1 (control) (n = 38) received traditional therapy. Group 2 (comparison) patients with UN comorbid with MS (n = 42) received, in addition to traditional therapy, conventional drugs that correct metabolic disorders. Group 3 (main) patients with UN comorbid with MS (n = 38) received quertine on the background of traditional therapy and drugs that correct metabolic disorders. During treatment, patients with UN demonstrated an accumulation of TBA-AP for the entire period of treatment with traditional therapy. The level of LPO intermediate products, namely of DC and TC, increased significantly after 14 days and after 1.5-2 months of follow-up, respectively. The content of endogenous α-tocopherol (α-TF) and glutathione reductase (GR) activity also decreased moderately after 14 days and after 1.5-2 months of treatment, respectively. In patients with UN comorbid with MS, inhibition of the intensity of LPO processes was observed, which was manifested in a moderate decrease in the pool of TBA-AP final product after 3-6 months to 0.82 ± 0.02 μmol / ml (p˂0.05). Thus, the use of quertine in combination with traditional therapy, drugs that affect metabolic processes, and differentiated uricostatic and uricolytic drugs contributed to the LPO processes normalization and the AOS restoration.
Near-Infrared Adaptive Optics Spectroscopy of Binary Brown Dwarf HD 130948B and C
Creators: name: Goto, M.
name: Kobayashi, N.
name: Terada, H.
name: Gaessler, W.
name: Kanzawa, T.
name: Takami, H.
name: Takato, N.
name: Hayano, Y.
name: Kamata, Y.
name: Iye, M.
name: Saint-Jacques, D. J.
name: Tokunaga, A. T.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present near-infrared spectroscopy of low-mass companions in a nearby triple system HD 130948 (Gliese 564, HR 5534). Adaptive optics on the Subaru Telescope allowed spectroscopy of the individual components of the 0".13 binary system. Based on a direct comparison with a series of template spectra, we determined the spectral types of HD 130948B and C to be L4 +- 1. If we take the young age of the primary star into account (0.3-0.8 Gyr), HD 130948B and C most likely are a binary brown dwarf system.
description: 6 pages, 3 figures, accepted for publication in ApJ Letters
Algebraic Classical and Quantum Field Theory on Causal Sets
Creators: name: Dable-Heath, Edmund
name: Fewster, Christopher J.
name: Rejzner, Kasia
name: Woods, Nick
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The framework of perturbative algebraic quantum field theory (pAQFT) is used to construct QFT models on causal sets. We discuss various discretised wave operators, including a new proposal based on the idea of a `preferred past', which we also introduce, and show how they may be used to construct classical free and interacting field theory models on a fixed causal set; additionally, we describe how the sensitivity of observables to changes in the background causal set may be encapsulated in a relative Cauchy evolution. These structures are used as the basis of a deformation quantization, using the methods of pAQFT. The SJ state is defined and discussed as a particular quantum state on the free quantum theory. Finally, using the framework of pAQFT, we construct interacting models for arbitrary interactions that are smooth functions of the field configurations. This is the first construction of such a wide class of models achieved in QFT on causal sets.
description: 42 pages, 3 figures
MOESM2 of Temporal change of near-surface shear wave velocity associated with rainfall in Northeast Honshu, Japan
Creators: name: Miao, Yu
name: Shi, Yang
name: Wang, Su-Yang
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 2: Fig.Â S2. Relationships between the relative velocity change and the rainfall classes for direct waves and coda waves.
Universal properties of superconformal OPEs for 1/2 BPS operators in $3\leq D \leq 6$
Creators: name: Ferrara, Sergio
name: Sokatchev, Emery
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a general analysis of OPEs of 1/2 BPS superfield operators for the $D=3,4,5,6$ superconformal algebras OSp(8/4,R), PSU(2,2), F${}_4$ and OSp($8^*/4$) which underlie maximal AdS supergravity in $4\leq D+1\leq 7$. \\ The corresponding three-point functions can be formally factorized in a way similar to the decomposition of a generic superconformal UIR into a product of supersingletons. This allows for a simple derivation of branching rules for primary superfields. The operators of protected conformal dimension which may appear in the OPE are classified and are shown to be either 1/2 or 1/4 BPS, or semishort. As an application, we discuss the "non-renormalization" of extremal $n$-point correlators.
description: To be published in NJP Focus Issue: Supersymmetry in condensed matter and high energy physics
Spin Transport in Organic Semiconductors
Creators: name: Wang, Shu-Jen
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: Organic Semiconductors
Spin Transport
Spintronics

description: The unique physical properties and low temperature solution processability of organic semiconductors have enabled many applications such as light emitting diodes, flexible logic and solar cells, they are unexploited in their potential for use in solid state devices for spintronics and spin-based information processing. Organic semiconductors composed of mainly light elements appeal to the field of spintronics due to their long spin lifetime originating from their weak spin-orbit coupling. The significant progress in improving carrier mobility of organic semiconductors in the past decade may lead to organic spin transport materials with both long spin diffusion length and spin lifetime which is important for spintronics applications. This dissertation explores the spin transport in organic semiconductors using a variety of experimental techniques from all electrical spin injection and detection to ferromagnetic resonance spin pumping and ISHE spin detection. Non-local spin valves and novel all electrical spin transport device architectures based on high mobility conjugated polymers were studied systematically. The intrinsic roadblocks for electrical spin injection-based measurements were identified as the current spreading effect (electrical cross-talk between the injector and detector electrodes) and the hopping conduction in organic semiconductors which makes all electrical nonlocal spin injection and detection measurements extremely challenging if not impossible for organic semiconductors. In addition, spin current transmission in the out of plane direction of organic semiconductors was studied by tri-layer spin pumping technique where the spin transport properties of organic semiconductors are correlated with their molecular structure and charge transport properties. Spin pumping, a charge-free spin injection method together with ISHE spin detection successfully overcome the impedance mismatch problem and the intrinsic roadblocks imposed by electrical spin injection-based techniques and enabled lateral spin current transport in organic semiconductors to be detected electrically. The lateral spin diffusion length of up to a micrometre was observed in doped conjugated polymers in agreement with theoretical calculations based on exchange mediated spin diffusion model and parameters obtained from first principle. Moreover, this non-local spin transport device structure provides a platform for studying spin transport in a wide range of organic semiconductors where the spin current propagates along the high mobility direction and could potentially be used as building blocks for high performance flexible spintronics devices.
Critical load and congestion instabilities in scale-free networks
Creators: name: Moreno, Y.
name: Pastor-Satorras, R.
name: Vazquez, A.
name: Vespignani, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the tolerance to congestion failures in communication networks with scale-free topology. The traffic load carried by each damaged element in the network must be partly or totally redistributed among the remaining elements. Overloaded elements might fail on their turn, triggering the occurrence of failure cascades able to isolate large parts of the network. We find a critical traffic load above which the probability of massive traffic congestions destroying the network communication capabilities is finite.
description: 4 pages, 3 figures
Anisotropy parameters of superconducting MgB$_2$
Creators: name: Kogan, V. G.
name: Bud'ko, S. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Data on macroscopic superconducting anisotropy of MgB$_2$ are reviewed. The data are described within a weak coupling two-gaps anisotropic s-wave model of superconductivity. The calculated ratio of the upper critical fields $γ_H=H_{c2,ab}/H_{c2,c}$ increases with decreasing temperature in agreement with available data, whereas the calculated ratio of London penetration depths $γ_λ=λ_c/λ_{ab}$ decreases to reach $\approx 1.1$ at T=0. Possible macroscopic consequences of $γ_λ\neγ_H$ are discussed.
description: accepted to Physica C, special MgB2 issue