cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Deep level emission of ZnO nanoparticles deposited inside UV opal
Creators: name: Abrarov, S. M.
name: Yuldashev, Sh. U.
name: Kim, T. W.
name: Kwon, Y. H.
name: Kang, T. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The temperature-dependent photoluminescence (PL) spectra of zinc oxide (ZnO) nanocrystals deposited inside the ultraviolet (UV) opal were studied. ZnO was grown in the voids between FCC packed silicon dioxide spheres using spray pyrolysis under ultrasonic vibration in the solution containing a zinc nitrate precursor. The ZnO nanoparticles inside opal matrix with UV photonic band-gap exhibit suppression of the excitonic emission and enhancement of the deep level emission. Suppression of the excitonic lines is due to the inhibition of spontaneous emission, while enhancement and broadening of the DL emission in the green spectral region is due to Purcell effect. The infiltration of ZnO inside the photonic crystal may be a useful technique to increase its emission efficiency in the selected spectral region.
description: 22 pages, 4 figures
Kilonova Emission From Black Hole-Neutron Star Mergers. II. Luminosity Function and Implications for Target-of-opportunity Observations of Gravitational-wave Triggers and Blind Searches
Creators: name: Zhu, Jin-Ping
name: Wu, Shichao
name: Yang, Yuan-Pei
name: Zhang, Bing
name: Gao, He
name: Yu, Yun-Wei
name: Li, Zhuo
name: Cao, Zhoujian
name: Liu, Liang-Duan
name: Huang, Yan
name: Zhang, Xing-Han
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present detailed simulations of black hole-neutron star (BH-NS) mergers kilonova and gamma-ray burst (GRB) afterglow and kilonova luminosity function, and discuss the detectability of electromagnetic (EM) counterpart in connection with gravitational wave (GW) detections, GW-triggered target-of-opportunity observations, and time-domain blind searches. The predicted absolute magnitude of the BH-NS kilonovae at $0.5\,{\rm days}$ after the merger falls in $[-10,-15.5]$. The simulated luminosity function contains the potential viewing-angle distribution information of the anisotropic kilonova emission. We simulate the GW detection rates, detectable distances and signal duration, for the future networks of 2nd/2.5th/3rd-generation GW detectors. BH-NSs tend to produce brighter kilonovae and afterglows if the BH has a higher aligned-spin, and a less massive NS with a stiffer EoS. The detectability of kilonova is especially sensitive to the BH spin. If BHs typically have low spins, the BH-NS EM counterparts are hard to discover. For the 2nd generation GW detector networks, a limiting magnitude of $m_{\rm limit}\sim23-24\,{\rm mag}$ is required to detect the kilonovae even if BH high spin is assumed. Thus, a plausible explanation for the lack of BH-NS associated kilonova detection during LIGO/Virgo O3 is that either there is no EM counterpart (plunging events), or the current follow-ups are too shallow. These observations still have the chance to detect the on-axis jet afterglow associated with an sGRB or an orphan afterglow. Follow-up observations can detect possible associated sGRB afterglows, from which kilonova signatures may be studied. For time-domain observations, a high-cadence search in redder filters is recommended to detect more BH-NS associated kilonovae and afterglows.
description: Accepted for Publication in ApJ, 36 pages, 17 figures, 6 tables
Identification of a Proliferation Gene Cluster Associated with HPV E6/E7 Expression Level and Viral DNA Load in Invasive Cervical Carcinoma
Creators: name: Rosty, Christophe
name: Sheffer, Michal
name: Tsafrir, Dafna
name: Stransky, Nicolas
name: Tsafrir, Ilan
name: Peter, Martine
name: de Cremoux, Patricia
name: de La Rochefordiere, Anne
name: Salmon, Remy
name: Dorval, Thierry
name: Thiery, Jean Paul
name: Couturier, Jerome
name: Radvanyi, Francois
name: Domany, Eytan
name: Sastre-Garau, Xavier
Publisher: name: arXiv
Year: 2005
Subjects: subject: Tissues and Organs (q-bio.TO)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: Specific HPV DNA sequences are associated with more than 90% of invasive carcinomas of the uterine cervix. Viral E6 and E7 oncogenes are key mediators in cell transformation by disrupting TP53 and RB pathways. To investigate molecular mechanisms involved in the progression of invasive cervical carcinoma, we performed a gene expression study on cases selected according to viral and clinical parameters. Using Coupled Two-Way Clustering and Sorting Points Into Neighbourhoods methods, we identified a Cervical Cancer Proliferation Cluster composed of 163 highly correlated transcripts, many of which corresponded to E2F pathway genes controlling cell proliferation, whereas no primary TP53 targets were present in this cluster. The average expression level of the genes of this cluster was higher in tumours with an early relapse than in tumours with a favourable course (P=0.026). Moreover, we found that E6/E7 mRNA expression level was positively correlated with the expression level of the cluster genes and with viral DNA load. These findings suggest that HPV E6/E7 expression level plays a key role in the progression of invasive carcinoma of the uterine cervix via the deregulation of cellular genes controlling tumour cell proliferation. HPV expression level may thus correspond to a biological marker useful for prognosis assessment and specific therapy of the disease.
Approximating nonequilibrium processes using a collection of surrogate diffusion models
Creators: name: Calderon, Christopher P.
name: Chelli, Riccardo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The surrogate process approximation (SPA) is applied to model the nonequilibrium dynamics of a reaction coordinate (RC) associated with the unfolding and refolding processes of a deca-alanine peptide at 300 K. The RC dynamics, which correspond to the evolution of the end-to-end distance of the polypeptide, are produced by steered molecular dynamics (SMD) simulations and approximated using overdamped diffusion models. We show that the collection of (estimated) SPA models contain structural information "orthogonal" to the RC monitored in this study. Functional data analysis ideas are used to correlate functions associated with the fitted SPA models with the work done on the system in SMD simulations. It is demonstrated that the shape of the nonequilibrium work distributions for the unfolding and refolding processes of deca-alanine can be predicted with functional data analysis ideas using a relatively small number of simulated SMD paths for calibrating the SPA diffusion models.
description: 13 pages, 7 figures
AJAE Appendix: Mergers and Acquisitions and Productivity in the U.S. Meat Products Industries
Creators: name: Nguyen, Sang V.
name: Ollinger, Michael
name: Nguyen, Sang V.
name: Ollinger, Michael
Publisher: name: Unknown
Year: 2006
Subjects: Industrial Organization
Livestock Production/Industries

description: This article investigates the motives for mergers and acquisitions in the U.S. meat products industry from1977-92. Results show that acquired meat and poultry plants were very productive before mergers, and that all but the very largest meat slaughter and processing plants and all but the bottom 20 percent of the poultry slaughter and processing plants significantly improved their productivity growth in their post-merger periods. These results lead to the conclusion that synergies and related efficiencies are important motives for Mergers and Acquisitions.
description: The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 88, Number 3, August 2006.
Deconstructed Higgsless Models with One-Site Delocalization
Creators: name: Chivukula, R. Sekhar
name: He, Hong-Jian
name: Kurachi, Masafumi
name: Tanabashi, Masaharu
name: Simmons, Elizabeth H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this note we calculate the form of electroweak corrections in deconstructed Higgsless models for the case of a fermion whose weak properties arise from two adjacent SU(2) groups on the deconstructed lattice. We show that, as recently proposed in the continuum, it is possible for the value of the electroweak parameter alpha S to be small in such a model. In addition, by working in the deconstructed limit, we may directly evaluate the size of off-Z-pole electroweak corrections arising from the exchange of Kaluza-Klein modes; this has not been studied in the continuum. The size of these corrections is summarized by the electroweak parameter alpha delta. In one-site delocalized Higgsless models with small values of alpha S, we show that the amount of delocalization is bounded from above, and must be less than 25% at 95% CL. We discuss the relation of these calculations to our previous calculations in deconstructed Higgsless models, and to models of extended technicolor. We present numerical results for a four-site model, illustrating our analytic calculations.
description: 23 pages, 5 figures; minor typos corrected and references updated
[Totonaco de Filomena Mata field notes]
Creators: name: Jeronimo Laureano, Miguel
name: Lopez Garcia, Isaias
name: McFarland, Teresa
name: Santiago Francisco, Jose
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2019
Subjects: subject: tlp
subject: Filomeno Mata-Coahuitlán Totonac language

description: Digital images of the eighth of ten notebooks from fieldwork in Veracruz, Mexico. Original dated Sept. 13-22, 2005 and July 23-Aug. 3, 2006.

(The digital files associated with this Item include a series of scanned images from original physical objects. These images are aggregated at lower resolution in the file McFarland.002.008.pdf. The original full resolution scans are collected in McFarland.002.008.zip. Metadata pertaining to each scanned image is compiled in the tab-separated text file McFarland.002.008-image_metadata.txt.)
AJAE Appendix: Tournaments, Fairness, and Risk
Creators: name: Wu, Steven Y.
name: Roe, Brian E.
name: Wu, Steven Y.
name: Roe, Brian E.
Publisher: name: Unknown
Year: 2006
Subjects: Research Methods/ Statistical Methods
Risk and Uncertainty

description: The experimental design of the contracting sessions builds upon BSW and Schotter and Weigelt (SW), and is nearly identical to those of Wu and Roe (WR), and Wu, et. al. Thus, we will not provide a detailed treatment of the underlying mathematics, and instead refer the reader to (WR), and Wu et. al. Here we will focus on providing the reader with only enough detail to conceptualize the experiments.
description: The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 88, Number 3, August 2006.
AJAE Appendix: Estimability and Identifying the Estimability Status of a System of Restrictions
Creators: name: Atwood, Joseph A.
name: Robison-Cox, James F.
name: Shaik, Saleem
name: Atwood, Joseph A.
name: Robison-Cox, James F.
name: Shaik, Saleem
Publisher: name: Unknown
Year: 2006
Subjects: Research Methods/ Statistical Methods

description: The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 88, Number 2, May 2006.
A log-Sobolev type inequality for free entropy of two projections
Creators: name: Hiai, Fumio
name: Ueda, Yoshimichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 46L54, 94A17, 60E15

description: We prove an inequality between the free entropy and the mutual free Fisher information for two projections, regarded as a free analog of the logarithmic Sobolev inequality. The proof is based on the random matrix approximation procedure via the Grassmannian random matrix model of two projections.
description: The assumption of the main theorem is improved
AJAE Appendix: Nonlinear Dynamics and Structural Change in the U.S. Hog-Corn Ratio: A Time-Varying Star Approach
Creators: name: Holt, Matthew T.
name: Craig, Lee A.
name: Holt, Matthew T.
name: Craig, Lee A.
Publisher: name: Unknown
Year: 2006
Subjects: Agribusiness

description: The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 88, Number 1, February 2006.
Spatial correlations in SIR epidemic models
Creators: name: Fukś, Henryk
name: Duchesne, Ryan
name: Lawniczak, Anna T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: We investigate the role of global mixing in epidemic processes. We first construct a simplified model of the SIR epidemic using a realistic population distribution. Using this model, we examine possible mechanisms for destruction of spatial correlations, in an attempt to produce correlation curves similar to those reported recently for real epidemiological data. We find that introduction of a long-range interaction destroys spatial correlations very easily if neighbourhood sizes are homogeneous. For inhomogeneous neighbourhoods, very strong long-range coupling is required to achieve a similar effect.
description: 6 pages, 4 figures
AJAE Appendix: Regulating Nitrogen Pollution with Risk-Averse Farmers under Hidden Information and Moral Hazard
Creators: name: Bontems, Philippe
name: Thomas, Alban
name: Bontems, Philippe
name: Thomas, Alban
Publisher: name: Unknown
Year: 2006
Subjects: Environmental Economics and Policy

description: The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 88, Number 1, February 2006.
Supplementary materials from Gazing down increases standing and walking postural steadiness
Creators: name: Koren, Yogev
name: Mairon, Rotem
name: Ilay Sofer
name: Parmet, Yisrael
name: Ben-Shahar, Ohad
name: Bar-Haim, Simona
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Neuroscience
subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: When walking on an uneven surface or complex terrain, humans tend to gaze downward. This behaviour is usually interpreted as an attempt to acquire useful information to guide locomotion. Visual information, however, is not used exclusively for guiding locomotion; it is also useful for postural control. Both locomotive and postural control have been shown to be sensitive to the visual flow arising from the respective motion of the individual and the three-dimensional environment. This flow changes when a person gazes downward and may present information that is more appropriate for postural control. To investigate whether downward gazing can be used for postural control, rather than exclusively for guiding locomotion, we quantified the dynamics of standing and walking posture in healthy adults, under several visual conditions. Through these experiments we were able to demonstrate that gazing downward, just a few steps ahead, resulted in a steadier standing and walking posture. These experiments indicate that gazing downward may serve more than one purpose and provide sufficient evidence of the possible interplay between the visual information used for guiding locomotion and that used for postural control. These findings contribute to our understanding of the control mechanism/s underlying gait and posture and have possible clinical implications.
AJAE Appendix: Grading, Minimum Quality Standards, and the Labeling of Genetically Modified Products
Creators: name: Lapan, Harvey E.
name: Moschini, GianCarlo
name: Lapan, Harvey E.
name: Moschini, GianCarlo
Publisher: name: Unknown
Year: 2007
Subjects: subject: Marketing
subject: FOS: Economics and business

description: The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 89, Number 3, August 2007.
The l(2)03605 P element induced lethality is not caused by disruption of the Drosophila melanogaster high mobility group genes D (HMG-D) or Z (HMG-Z)
Creators: name: James, Erick Robert
Publisher: name: University of British Columbia
Year: 2009

description: Chromatin is functionally defined as DNA, histones and non-histone chromosomal proteins (NHCP). The High Mobility Group (HMG) 1/2 proteins represent one well defined set of NHCP in eukaryotes . These proteins are thought to act as architectural components of chromatin and are well characterized biochemically but not biologically. HMG 1/2 proteins have been implicated in transcription, DNA replication, chromatin assembly and stability. The Drosophila HMG1 homologues are HMG-D and HMG-Z. The Drosphila HMGs are thought to play a role in establishing developmental specific regions of chromatin that are silent and easily replicatable, albeit at different developmental times and locations, but again their biological role is speculative. Unfortunately, no mutations exist in the HMG 1/2 class of proteins and mutants would be extremely useful in assigning a biological function to these proteins. However, the Drosophila HMG gene are cytologically mapped to a precise region, banded region 57F8-11 on chromosome 2. I attempted to identify P element insert mutations in HMG-D/Z using the Berkeley Drosophila Genome Project P element insertion lines. The Berkeley Drosophila Genome Project has undertaken the daunting task of P element tagging essential genes in Drosophila. Their P element inserts are mapped cytologically and the expression pattern of enhancer trap expression are known. One such recessive lethal line, l(2)03605/CyO has a P element inserted at 57F8-10, the same cytological location as HMG-D/Z. In addition, the insert shows fi-galactosidase expression in the nervous system, while HMG-D/Z mRNA is also found in embryonic neural tissues. This coincident expression pattern and the cytological location suggest that the 1(2)03605 P element insertion may have disrupted either or both genes. Therefore, I set out to determine whether the 1(2)03605 P element is either inserted into and/or disrupting the HMG-D/Z genes. This work shows the 1(2)03605 P element does not affect either HMG-D or HMG-Z and most likely disrupts another gene in the 57F8-10 region.
Generation of cluster states
Creators: name: Dong, Ping
name: Xue, Zheng-Yuan
name: Yang, Ming
name: Cao, Zhuo-Liang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose two schemes for the generation of the cluster states. One is based on cavity quantum electrodynamics (QED) techniques. The scheme only requires resonant interactions between two atoms and a single-mode cavity. The interaction time is very short, which is important in view of decoherence. Furthermore, we also discuss the cavity decay and atomic spontaneous emission case. The other is based on atomic ensembles. The scheme has inherent fault tolerance function and is robust to realistic noise and imperfections. All the facilities used in our schemes are well within the current technology.
description: Complete rewite version, adding the main results of quant-ph/0511045. 7 pages and 3 figures
AJAE Appendix: Pricing-to-Market: Price Discrimination or Product Differentiation?
Creators: name: Lavoie, Nathalie
name: Liu, Qihong
name: Lavoie, Nathalie
name: Liu, Qihong
Publisher: name: Unknown
Year: 2007
Subjects: Demand and Price Analysis

description: The material contained herein is supplementary to the article named in the title and published in the American Journal of Agricultural Economics, Volume 89, Number 3, August 2007.
Leggett-Garg tests for macrorealism: interference experiments and the simple harmonic oscillator
Creators: name: Halliwell, J. J.
name: Bhatnagar, A.
name: Ireland, E.
name: Nadeem, H.
name: Wimalaweera, V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Leggett-Garg (LG) tests for macrorealism were originally designed to explore quantum coherence on the macroscopic scale. Interference experiments and systems modelled by harmonic oscillators provide useful examples of situations in which macroscopicity has been approached experimentally and are readily turned into LG tests for a single dichotomic variable Q. Applying this approach to the double-slit experiment in which a non-invasive measurement at the slits is included, we exhibit LG violations. We find that these violations are always accompanied by destructive interference. The converse is not true in general and we find that there are non-trivial regimes in which there is destructive interference but the two-time LG inequalities are satisfied which implies that it is in fact often possible to assign (indirectly determined) probabilities for the interferometer paths. Similar features have been observed in recent work involving a LG analysis of a Mach-Zehnder interferometer and we compare with those results. We extend the analysis to the triple-slit experiment again finding LG violations, and we also exhibit examples of some surprising relationships between LG inequalities and NSIT conditions that do not exist for dichotomic variables. For the simple harmonic oscillator, we find an analytically tractable example showing a two-time LG violation with a gaussian initial state, echoing in simpler form recent results of Bose et al (Phys. Rev. Lett. 120, 210402 (2018)).
description: 27 pages, 5 figures. Substantial revisions. Accepted for publication in Physical Review A
D-branes in Lorentzian AdS(3)
Creators: name: Israel, Dan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the exact construction of D-branes in Lorentzian AdS(3). We start by defining a family of conformal field theories that gives a natural Euclidean version of the SL(2,R) CFT and does not correspond to H(3)+, the analytic continuation of AdS(3). We argue that one can recuperate the exact CFT results of Lorentzian AdS(3), upon an analytic continuation in the moduli space of these conformal field theories. Then we construct exact boundary states for various symmetric and symmetry-breaking D-branes in AdS(3).
description: JHEP style;21 pages, no figures; v2:some corrections, comments and references added
New lower bounds for weak Schur partitions
Creators: name: Rowley, Fred
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: This paper records some apparently new results for the partition of integer intervals [1, n] into weakly sum-free subsets. These were produced using a method closely related to that used by Schur in 1917. New lower bounds can be produced in this way for partitions of unlimited size. The asymptotic growth rate of the lower bounds, as the number of subsets increases, cannot be less than the same growth rate for strongly sum-free partitions, and therefore exceeds 3.27. Specific results for partitions into a 'small' number of subsets include $WS(6) \ge 642$, $WS(7) \ge 2146$, $WS(8) \ge 6976$, $WS(9) \ge 21848$, and $WS(10) \ge 70778$.
description: 5 pages
Evidence for non-hadronic interactions of charm degrees of freedom in heavy-ion collisions at relativistic energies
Creators: name: Linnyk, O.
name: Bratkovskaya, E. L.
name: Cassing, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the Hadron-String Dynamics (HSD) transport approach we study the suppression pattern of charmonia at RHIC with respect to centrality and rapidity employing various model concepts such as variants of the 'comover absorption' model or the 'charmonium melting' scenario. We find that especially the ratio of the forward to mid-rapidity nuclear modification factors of J/Psi (R_AA (forward) / R_AA (mid)) cannot be explained by the interactions with 'formed' comoving mesons or by the 'color screening mechanism' alone. Only when incorporating interactions of the c or c-bar quark with a pre-hadronic medium satisfactory results are obtained. A detailed comparison to the PHENIX data demonstrates that non-hadronic interactions are mandatory to describe the narrowing of the J/Psi rapidity distribution from p+p to central Au+Au collisions. The Psi' to J/Psi ratio is found to be crucial in disentangling the different charmonium absorption scenarios especially in the RHIC energy range. Furthermore, a comparison of the transport calculations to the statistical model of Gorenstein and Gazdzicki as well as the statistical hadronization model of Andronic et al. shows differences in the energy dependence as well as centrality dependence of the J/Psi to pion ratio which may be exploited experimentally to disentangle different concepts. We find additionally that the collective flow of charm in the HSD transport appears compatible with the data at SPS energies but substantially underestimates the data at top RHIC energies such that the large elliptic flow v_2 of charm seen experimentally has to be attributed to early interactions of non-hadronic degrees of freedom.
description: 35 pages, 16 Figs, v2: additional figure and corresponding changes to the text
Credit availability in the crisis: which role for the
European Investment Bank Group?
Creators: name: Fedele, Alessandro
name: Mantovani, Andrea
name: Liucci, Francesco
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/01 Economia politica

description: In this paper we consider a moral hazard problem between a creditworthy firm which needs funding and a bank. We first study under which conditions the firm does not obtain the loan. We then determine whether and how the intervention of an external financial institution can facilitate the access to credit. In particular, we
focus on the European Investment Bank Group (EIBG), which provides (i) specific credit lines to help banks that finance small and medium-sized enterprises (SMEs)and (ii) guarantees for portfolios of SMEs'loans. We show that only during crises the EIBG intervention allows to totally overcome the credit crunch.
Smooth flat maps over commutative DG-rings
Creators: name: Shaul, Liran
Publisher: name: arXiv
Year: 2020
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 16E45, 13D09, 14B25

description: We study smooth maps that arise in derived algebraic geometry. Given a map $A \to B$ between non-positive commutative noetherian DG-rings which is of flat dimension $0$, we show that it is smooth in the sense of Toën-Vezzosi if and only if it is homologically smooth in the sense of Kontsevich. We then show that $B$, being a perfect DG-module over $B\otimes^{\mathrm{L}}_A B$ has, locally, an explicit semi-free resolution as a Koszul complex. As an application we show that a strong form of Van den Bergh duality between (derived) Hochschild homology and cohomology holds in this setting.
description: 15 pages, final version, to appear in Math. Z
On Lie point symmetries in differential games
Creators: name: Palestini, Arsen
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/01 Economia politica

description: A technique to determine closed-loop Nash equilibria of n-player differential games is developed when their dynamic state-control system is composed of decoupled ODEs. In particular, the theory of Lie point symmetries is exploited to achieve first integrals of such systems.
Tachyon condensation in unbalanced D-anti D system
Creators: name: Ishida, Akira
name: Uehara, Shozo
name: Yada, Tomoki
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The tachyon condensation is studied in asymmetric D-anti D systems. Taking a system of two pairs of D5-anti D5 in type IIB superstring theory in the background of large N D5-branes, we show that one BPS D1-brane comes out after the condensation. It is also seen that the BPS D1-brane feels no force from the background D5-branes. We also show that the inclusion of the fluctuation fields gives an expected Dirac-Born-Infeld (DBI) action of the resultant D1-brane. On the other hand, in the case of one pair of D5-anti D5 in the same background, we show that the resultant BPS D3-brane experiences attractive force from the background D5-branes.
description: 18 pages, minor corrections, to appear in Prog. Theor. Phys
Strategic Accessibility Competition
Creators: name: Bacchiega, Emanuele
name: Randon, Emanuela
name: Zirulia, Lorenzo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/01 Economia politica

description: We analyze the effect of competition in market-accessibility enhancement among quality-differentiated firms. Firms are located in regions with different ex-ante transport costs to reach the final market. We characterize the equilibrium of the two-stage game in which firms first invest to improve market accessibility and then compete in prices. Efforts in accessibility improvement crucially depend on the interplay between the willingness to pay for the quality premium of the median consumer and the ex-ante difference in accessibility between regions. From the social standpoint, all the accessibility investment should be carried out by the high-quality firm. Finally quality choice is endogenized.
Physical effects of the Immirzi parameter
Creators: name: Perez, Alejandro
name: Rovelli, Carlo
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Immirzi parameter is a constant appearing in the general relativity action used as a starting point for the loop quantization of gravity. The parameter is commonly believed not to show up in the equations of motion, because it appears in front of a term in the action that vanishes on shell. We show that in the presence of fermions, instead, the Immirzi term in the action does not vanish on shell, and the Immirzi parameter does appear in the equations of motion. It determines the coupling constant of a four-fermion interaction. Therefore the Immirzi parameter leads to effects that are observable in principle, even independently from nonperturbative quantum gravity.
description: 3 pages. Substantial revision from the first version
Long memory and nonlinearities in realized volatility: a Markov switching approach
Creators: name: Bordignon, Silvano
name: Raggi, Davide
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/05 Econometria

description: Goal of this paper is to analyze and forecast realized volatility through nonlinear and highly persistent dynamics. In particular, we propose a model that simultaneously captures long memory and nonlinearities in which level and persistence shift through a Markov switching dynamics.
We consider an efficient Markov chain Monte Carlo (MCMC) algorithm to estimate parameters, latent process and predictive densities. The insample results show that both long memory and nonlinearities are significant and improve the description of the data. The out-sample results at several forecast horizons, show that introducing these nonlinearities produces superior forecasts over those obtained from nested models.
Exclusive J/Psi and Psi(2s) photo-production as a probe of QCD low x evolution equations
Creators: name: Hentschinski, Martin
name: Molina, Emilio Padron
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate photo-production of vector mesons J/Psi and Psi(2s), based on both HERA and LHC data, using 2 fits of unintegrated gluon distributions. The latter are subject to non-linear Balitsky-Kovchegov evolution (Kutak-Sapeta gluon; KS) and linear next-to-leading order Balitsky-Kuraev-Fadin-Lipatov evolution (Hentschinski-Sabio Vera-Salas; HSS gluon) respectively. Apart from extending previous studies to the case of radially excited charmonium Psi(2s), we further use an improved set of charmonium wave functions and provide an estimate of the uncertainties associated with the HSS gluon. While we observe that the difference between linear and non-linear evolution somehow diminishes and a clear distinction between both HSS and KS gluon is no longer possible using the currently available data-set, we find that the differences between both gluon distributions are enhanced for the ratio of the photo-production cross-sections of Psi(2s) and J/Psi vector mesons.
description: 21 pages, 19 figures; revised description and additional discussion of instability of the fixed scale BFKL dipole; added references; version accepted for publication in Phys. Rev. D
On the Feedback Solution of a Differential Oligopoly Game with Hyperbolic Demand and Capacity Accumulation
Creators: name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/01 Economia politica

description: I characterise the subgame perfect equilibrium of a differential market game with hyperbolic demand where firms are quantity-setters and accumulate capacity over time à la Ramsey. I show that the open-loop solution is subgame perfect. Then, I analyse the feasibility of horizontal mergers, and compare the result generated by the dynamic setup with the merger incentive associated with the static model. It appears that allowing for the role of time makes mergers more likely to occur than they would on the basis of the static setting.
Four-dimensional $N=1$ theories, S-fold constraints on T-branes, and behaviors in IR and UV
Creators: name: Kimura, Yusuke
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze four-dimensional (4d) $N=1$ superconformal field theories (SCFTs) obtained as deformations of 4d $N=2$ SCFTs on S-folds by tilting 7-branes. Geometric compatibility with the structures of S-folds constrains the forms of T-branes. As a result, brane monodromies are constrained. We also discuss two 4d $N=1$ theories on probe D3-branes, where the two theories behave identically in IR, but they originate from different theories in UV. Studying the global structure of their geometry is useful in constructing these two theories.
description: 23 pages, added references
Policy Rules, Regime Switches, and Trend Inflation: An Empirical Investigation for the U.S.
Creators: name: Castelnuovo, Efrem
name: Greco, Luciano
name: Raggi, Davide
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/05 Econometria

description: This paper estimates Taylor rules featuring instabilities in policy parameters, switches in policy shocks' volatility, and time-varying trend inflation using post-WWII U.S. data. The model embedding the stochastic target performs better in terms of data-fit and identification of the changes in the FOMC's chairmanships. Policy breaks are found not to be synchronized with variations in policy shocks' volatilities. Finally, we detect a negative correlation between systematic monetary policy aggressiveness and inflation gap persistence.
[Hill Patwin ethnographic notes]
Creators: name: Halpern, Abraham M.
name: Lowell Lorenzo, Daisy
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2019
Subjects: subject: pwi
subject: Hill Patwin language

description: Handwritten and typed ethnographic notes on Hill Patwin; includes discussion of Ghost Dance.

(The digital files associated with this Item include a series of scanned images from original physical objects. These images are aggregated at lower resolution in the file Halpern.031.001.pdf. The original full resolution scans are collected in Halpern.031.001.zip. Metadata pertaining to each scanned image is compiled in the tab-separated text file Halpern.031.001-image_metadata.txt.)
Rent seekers in rentier states: When greed brings peace
Creators: name: Bjorvatn, Kjetil
name: Naghavi, Alireza
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: SECS-P/01 Economia politica

description: Are natural resources a source of conflict or stability? Empirical studies demonstrate that rents from natural resources, and in particular oil, are an important source of civil war. Allegedly, resource rents attract rent seekers, which destabilize society. However, there is a large literature on how so-called rentier states manage to pacify opposition groups by handing out special favors. The present paper attempts to bridge the gap between the rent-seeking view of resource rents as a source of conflict and the rentier state view which emphasizes the role of resource rents in promoting peace and stability, and show how one may lead to the other. The mechanism that we highlight relies on the notion that higher rents may activate more interest groups in a power struggle. We demonstrate that the associated increased cost of conflict may in fact promote social stability. The peaceful solution is upheld by a self reinforcing transfer program, in the form of patronage employment. The chance of conflict and rent dissipation in our model is highest for intermediate levels of resource rents, where the government cannot make credible commitments to the opposition groups.
Report on numbers, workflow and challenges of the MK DASS documentation for future integration into EQB
Creators: name: Cekikj, Aneta
Publisher: name: Zenodo
Year: 2021
Subjects: CESSDA
EQB
Metadata
Schema
Requirements
DDI

description: This report describes MK DASS’s experience with regard to the workflow and challenges of the MK DASS documentation for future integration into EQB. As the purpose of the project was to evaluate, collect, and prepare question-level metadata from selected national and international studies from North Macedonia currently stored at FORS, the report describes the challenges that an archive in an early phase of development faced in performing these tasks. This relates mostly to securing consent from researchers, since MK DASS is not the owner of these data, and does not have a contract with researches for using their data for this or similar purposes. The preparation of question-level metadata was less challenging and was done with the use of the GESIS questionnaire editor.
Financial disclosure and the Board: a case for non-independent directors
Creators: name: Biondi, Yuri
name: Giannoccolo, Pierpaolo
name: Reberioux, Antoine
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2010
Subjects: SECS-P/02 Politica economica

description: In listed companies, the Board of directors has ultimate responsibility for information disclosure. The conventional wisdom is that director independence is an essential factor in improving the quality of that disclosure. In a sense, this approach subordinates
expertise to independence. We argue that effective certification may require firm-specific expertise, in particular for intangible-intensive business models. However, this latter form of expertise is negatively related to independence as it is commonly measured and evaluated.
Accordingly, there exists an optimal share of independent directors for each company, related to the level of intangible resources.
Generalized eigenfunctions for quantum walks via path counting approach
Creators: name: Komatsu, Takashi
name: Konno, Norio
name: Morioka, Hisashi
name: Segawa, Etsuo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the time-independent scattering theory for time evolution operators of one-dimensional two-state quantum walks. The scattering matrix associated with the position-dependent quantum walk naturally appears in the asymptotic behavior at spatial infinity of generalized eigenfunctions. The asymptotic behavior of generalized eigenfunctions is a consequence of an explicit expression of the Green function associated with the free quantum walk. When the position-dependent quantum walk is a finite rank perturbation of the free quantum walk, we derive a kind of combinatorial constructions of the scattering matrix by counting paths of quantum walkers. We also mention some remarks on the tunneling effect.
description: 21 pages, 1 figure
Independent Sets in Graphs with an Excluded Clique Minor
Creators: name: Wood, David R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15

description: Let $G$ be a graph with $n$ vertices, with independence number $α$, and with with no $K_{t+1}$-minor for some $t\geq5$. It is proved that $(2α-1)(2t-5)\geq2n-5$.
Difference-frequency generation in an AlGaAs Bragg-reflection waveguide using an on-chip electrically-pumped quantum dot laser
Creators: name: Schlager, A.
name: Götsch, M.
name: Chapman, R. J.
name: Frick, S.
name: Thiel, H.
name: Suchomel, H.
name: Kamp, M.
name: Höfling, S.
name: Schneider, C.
name: Weihs, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonlinear frequency conversion is ubiquitous in laser engineering and quantum information technology. A long-standing goal in photonics is to integrate on-chip semiconductor laser sources with nonlinear optical components. Engineering waveguide lasers with spectra that phase-match to nonlinear processes on the same device is a formidable challenge. Here, we demonstrate difference-frequency generation in an AlGaAs Bragg reflection waveguide which incorporates the gain medium for the pump laser in its core. We include quantum dot layers in the AlGaAs waveguide that generate electrically driven laser light at ~790 nm, and engineer the structure to facilitate nonlinear processes at this wavelength. We perform difference-frequency generation between 1540 nm and 1630 nm using the on-chip laser, which is enabled by the broad modal phase-matching of the AlGaAs waveguide, and measure normalized conversion efficiencies up to $(0.64\pm0.21)$ %/W/cm$^2$. Our work demonstrates a pathway towards devices that utilize on-chip active elements and strong optical nonlinearities to enable highly integrated photonic systems-on-chip.
Isospin Diffusion in Heavy-Ion Collisions and the Neutron Skin Thickness of Lead
Creators: name: Steiner, Andrew W.
name: Li, Bao-An
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The correlation between the thickness of the neutron skin in Pb-208, and the degree of isospin diffusion in heavy-ion collisions is examined. The same equation of state is used to compute the degree of isospin diffusion in an isospin-depedent transport model and the neutron skin thickness in the Hartree-Fock approximation. We find that skin thicknesses less than 0.15 fm are excluded by the isospin diffusion data.
description: 5 pages, 4 figures; few minor corrections and updates; version to appear in PRC
Detecting a physical difference between the CDM halos in simulation and in nature
Creators: name: Xiao, Weike
name: Peng, Chang
name: Ye, Xianfeng
name: Hao, Heng
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Numerical simulation is an important tool to help us understand the process of structure formation in the universe. However many simulation results of cold dark matter (CDM) halos on small scale are inconsistent with observations: the central density profile is too cuspy and there are too many substructures. Here we point out that these two problems may be connected with a hitherto unrecognized bias in the simulation halos. Although CDM halos in nature and in simulation are both virialized systems of collisionless CDM particles, gravitational encounter cannot be neglected in the simulation halos because they contain much less particles. We demonstrate this by two numerical experiments, showing that there is a difference on the microcosmic scale between the natural and simulation halos. The simulation halo is more akin to globular clusters where gravitational encounter is known to lead to such drastic phenomena as core collapse. And such artificial core collapse process appears to link the two problems together in the bottom-up scenario of structure formation in the $Λ$CDM universe. The discovery of this bias also has implications on the applicability of the Jeans Theorem in Galactic Dynamics.
description: 5 pages, 4 figures, ApJ Letters submitted. Comments and suggestions welcome
[Central Pomo texts]
Creators: name: Halpern, Abraham M.
name: Ward, Esther
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2019
Subjects: subject: poo
subject: Central Pomo language

description: Handwritten notes containing transcriptions and translations of texts in Central Pomo.

(The digital files associated with this Item include a series of scanned images from original physical objects. These images are aggregated at lower resolution in the file Halpern.027.pdf. The original full resolution scans are collected in Halpern.027.zip. Metadata pertaining to each scanned image is compiled in the tab-separated text file Halpern.027-image_metadata.txt.)
Single-shot number-resolved detection of microwave photons with error mitigation
Creators: name: Curtis, Jacob C.
name: Hann, Connor T.
name: Elder, Salvatore S.
name: Wang, Christopher S.
name: Frunzio, Luigi
name: Jiang, Liang
name: Schoelkopf, Robert J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Single-photon detectors are ubiquitous and integral components of photonic quantum cryptography, communication, and computation. Many applications, however, require not only detecting the presence of any photons, but distinguishing the number present with a single shot. Here, we implement a single-shot, high-fidelity photon number-resolving detector of up to 15 microwave photons in a cavity-qubit circuit QED platform. This detector functions by measuring a series of generalized parity operators which make up the bits in the binary decomposition of the photon number. Our protocol consists of successive, independent measurements of each bit by entangling the ancilla with the cavity, then reading out and resetting the ancilla. Photon loss and ancilla readout errors can flip one or more bits, causing nontrivial errors in the outcome, but these errors have a traceable form which can be captured in a simple hidden Markov model. Relying on the independence of each bit measurement, we mitigate biases in ensembles of measurements, showing good agreement with the predictions of the model. The mitigation improves the average total variation distance error of Fock states from $13.5\%$ to $1.1\%$. We also show that the mitigation is efficiently scalable to an $M$-mode system provided that the errors are independent and sufficiently small. Our work motivates the development of new algorithms that utilize single-shot, high-fidelity PNR detectors.
description: 15 pages, 7 figures