cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of Integrated Management of Anthracnose (Colletotrichum lindemuthianum) on Plant and Seed Health of Common Bean in Hararghe Highlands, Ethiopia
Creators: name: Mohammed, Amin
name: Amare Ayalew
name: Nugussie Dechassa
name: Mulugeta Negeri
Publisher: name: Journal of Science and Sustainable Development
Year: 2013

description: Bean anthracnose, caused by Colletotricum lindemuthianum (Sacc. & Magn.) is an important disease affecting common bean (Phaseolus vulgaris L.). Information on yield losses and management options addressing both seed and soil-borne inoculum sources of this disease is lacking in Hararghe highlands which produces common bean in large areas. The present study was undertaken to evaluate the effect of integrated management of bean anthracnose through soil solarization and fungicide applications on disease development, seed health and seed yield of common bean variety Mexican-142. Field experiments were conducted at Haramaya University main campus and Hirna Research Sub-Station in 2010 main cropping season. Soil solarization was integrated with mancozeb and carbendazim seed treatments, with foliar sprays of carbendazim at the rate of 0.5 kg/ha at 10 and 20 days intervals. The experiment was arranged in 2 x 3 x 3 split-split plot design with three replications. A total of 18 treatments were evaluated. There was significant difference in the anthracnose incidence, severity, infected pods per plant, infected seeds and AUDPC among treatments. Combined effect of mancozeb seed treatment with carbendazim spray at 10 day intervals and carbendazim seed treatment and carbendazim spray at 10 day intervals have reduced severity by 46.5% and 41%, respectively at Haramaya. Interactions of solarized soil with carbendazim foliar spray frequencies at 10 days interval reduced the number of infected pods per plant by 58% at Haramaya and 38.9% at Hirna. Seed treatments, foliar sprays and soil solarization alone as well as their interactions did not significantly affect pods per plant and seeds per pod at both locations. The combinations of solarized soil + mancozeb seed treatment + carbendazim foliar spray at 10 day intervals produced seed yield of 3.8 t h-1 at Haramaya and 3.6 t h-1 at Hirna over the control. In the results concluded that, the integration of soil solarization, seed treatments and foliar spray were found to be effective in reducing bean anthracnose epidemics and increasing yield. Extensive studies are recommended for detection of seed health and management options to enhance high quality of common bean production in these regions.
description: Journal of Science and Sustainable Development, Vol. 1 No. 1 (2013)
Characterization of antioxidant and anti-inflammatory activities of Maillard reaction products derived from sugar-amino acid models
Creators: name: Chen, Xiumin
Publisher: name: University of British Columbia
Year: 2011

description: Maillard reaction products (MRPs) are produced when reducing sugars react with amino acids, peptides or proteins in heat-processed foods. The overall objective of this research was to isolate and identify MRPs that exhibit antioxidant and anti-inflammatory activities, from different sugar-amino acid model systems comprised of fructose, glucose or ribose, each with glycine (Fru-Gly, Glu-Gly and Rib-Gly) or lysine (Fru-Lys, Glu-Lys and Rib-Lys), respectively. The development of peroxyl radical scavenging activity was found to be positively correlated (r = 0.893-0.905, P < 0.001) with MRPs derived from the intermediate-to-late stages of the reaction and influenced mostly by the type of sugar. The cytotoxicity, antioxidant and anti-inflammatory activities of MRPs were not attributed to the α-dicarbonyl compounds present in the heated mixtures. An in vitro intestinal inflammation model was established using Caco-2 cells stimulated with 8,000U/mL interferon γ (IFN-γ) and 0.1 μg/mL of phorbol myristate acetate (PMA), which induced nitric oxide (NO) through up-regulation of inducible nitric oxide synthase (iNOS) expression and increased interleukin 8 (IL-8) synthesis. The NO and IL-8 inhibitory capacity of MRPs were positively correlated (r = 0.886-0.943, P < 0.05) with intracellular oxidation inhibitory activity. MRPs derived from Glu-Lys heated for 60 min showed the highest inhibitory activity for NO, IL-8, and iNOS among these six model systems and the low molecular weight ultrafiltration fraction recovered from Glu-Lys (GL60FIV, molecular weight (MW) < 1kDa) was attributed to these activities. A fraction recovered from GL60FIV, termed F3, possessed the high NO, iNOS and IL-8 inhibitory activity and was further identified to contain three major sub-fractions (F3-A, F3-B and F3-C). The NO inhibitory capacity of F3-A (IC₅₀, 0.076 mmol/L) was higher (P < 0.05) than that of an iNOS inhibitor, aminoguanidine (IC₅₀, 0.16mmol/L). F3-A had a MW of 191Da and λmax= 370nm. F3-B and F3-C were identified as 5-hydroxymethyl-2-furfural and 5-hydroxymethyl-2-furoic acid, respectively. F3 down-regulated the expressions of genes that were involved in both the NF-κB signaling pathway and peroxidase activities. In conclusion, MRPs isolated from sugar-amino acid model systems can exhibit antioxidative and anti-inflammatory activities that may be useful to reduce intestinal inflammation.
Trust, reciprocity and favors in cooperative relationships
Creators: name: Bagwell, Kyle
name: Abdulkadiroglu, Atila
Publisher: name: Columbia University
Year: 2005
Subjects: Economics

description: We study trust, reciprocity and favors in a repeated trust game with private information. In our main analysis, players are willing to exhibit trust and thereby facilitate cooperative gains only if such behavior is regarded as a favor that must be reciprocated, either immediately or in the future. Private information is a fundamental ingredient in our theory. A player with the ability to provide a favor must have the incentive to reveal this capability, and this incentive is provided by an equilibrium construction in which favors are reciprocated. We also offer the novel prediction that the size of a favor owed may decline over time, as neutral phases of the relationship are experienced. Indeed, a favor-exchange relationship with this feature offers a higher total payoff than does a simple favor-exchange relationship. We also describe specific circumstances in which a relationship founded on favor exchange may be inferior to a relationship in which an infrequent and symmetric punishment motivates cooperative behavior. Finally, we show that a hybrid relationship, in which players begin with a honeymoon period and then either proceed to a favor-exchange relationship of suffer a symmetric punishment, can also offer scope for improvement.
Review of the Structural Stability, Electronic and Magnetic Properties of Nonmetal-Doped TiO$_2$ from First-Principles Calculations
Creators: name: Yang, Kesong
name: Dai, Ying
name: Huang, Baibiao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This paper reviews and summarizes the recent first-principles theoretical studies of the structural stability, electronic structure, optical and magnetic properties of nonmetal-doped TiO$_2$. The first section presents a comparison study of the structural stability for X-anion and X-cation doped TiO$_2$ (X=B, C, Si, Ge, N, P, As, Sb, S, Se, Te, F, Cl, Br, and I), which reveals that the sites of nonmetal dopants (i.e., at O sites or at Ti sites) in TiO$_2$ are determined by the growth condition of doped TiO$_2$ and the dopants' electronegativities. The next section reviews the electronic structure, optical absorption and mechanism of the visible-light photocatalytic activity for nonmetal-doped TiO$_2$. The third section summarizes the origin of the spin-polarization and the magnetic coupling character in C- (N- and B-) doped TiO$_2$.
description: 21 pages, 24 figures, 3 tables
УГОЛОВНАЯ ПОЛИТИКА ПО ИСПОЛЬЗОВАНИЮ ВОЗМОЖНОСТЕЙ ЦИФРОВЫХ ТЕХНОЛОГИЙ В ПРОТИВОДЕЙСТВИИ МОШЕННИЧЕСТВУ
Creators: name: ШАМЬЕНОВ НАИЛЬ РУШАНОВИЧ
name: ВЕСТОВ ФЕДОР АЛЕКСАНДРОВИЧ
Publisher: name: Основы экономики, управления и права
Year: 2020
Subjects: УГОЛОВНАЯ ПОЛИТИКА
ЦИФРОВЫЕ ТЕХНОЛОГИИ
МОШЕННИЧЕСТВО
ПРОТИВОДЕЙСТВИЕ МОШЕННИЧЕСТВУ
CRIMINAL POLICY
DIGITAL TECHNOLOGIES
FRAUD
ANTI-FRAUD

description: В статье рассматриваются способы внедрения и использования возможностей цифровых технологий в деятельности правоохранительных органов по противодействию мошенничеству в процессе проводимой уголовной политики через призму приспособления закона к жизни в новых условиях повсеместной цифровизации.
ПРОБЛЕМА КЛОНИРОВАНИЯ ЧЕЛОВЕКА: ПРАВОВЫЕ И МОРАЛЬНО-ЭТИЧЕСКИЕ АСПЕКТЫ
Creators: name: ЯРОЩУК АНАСТАСИЯ ВИКТОРОВНА
name: ГРОМОВ ВЛАДИМИР ГЕННАДЬЕВИЧ
Publisher: name: Основы экономики, управления и права
Year: 2020
Subjects: КЛОНИРОВАНИЕ
ЭМБРИОН
ЗАКОН
ОТВЕТСТВЕННОСТЬ
МОРАЛЬ
РЕЛИГИЯ
CLONING
EMBRYO
LAW
RESPONSIBILITY
MORALITY
RELIGION

description: В настоящее время законодательством устанавливается, что за клонирование человека, а также ввоз на территорию Российской Федерации и вывоз с её территории клонированных эмбрионов человека должна наступать ответственность, однако норм, содержащих такую ответственность, в законе нет. Негативное отношение мировых религий к клонированию человека объясняется подрывом догм о создании человека Творцом. С другой стороны, технология клонирования открывает огромные возможности для излечения многих тяжелых заболеваний. Авторы предлагают регламентировать как уголовную, так и административную ответственность за клонирование человека, а также закрепить ничтожность гражданско-правовых сделок, которые могут возникнуть в сфере клонирования.
Bypassing health centers in Tanzania: Revealed preferences for observable and unobservable quality
Creators: name: Leonard, Kenneth L.
name: Mliga, Gilbert R.
name: Mariam, Damen Haile
Publisher: name: Columbia University
Year: 2002
Subjects: Economics
Public health

description: When patients bypass one health facility to seek health care at another, strong preferences are revealed. This paper advances the view that the patterns of bypassing observed in Iringa Rural district in Tanzania show evidence of patients' understanding of various measures of quality at the facilities that they visit and bypass. Importantly some of these measures are 'unobservable,' meaning that we do not expect patients to be able to evaluate whether or not these types of quality are present just from visiting a center. We use two data sets on various features of health facilities including consultation quality and prescription quality as evaluated by a team of clinicians. This is matched with data collected from health center registers that included the symptoms of patients and the village they traveled from. The register data is transformed into a patient-based sample and we use a multinomial/conditional logit regression on patient choice of provider to show the relationship between patient behavior and objective measure of technical quality in the health facilities. Patients seek facilities that provide high quality consultations, are staffed by more knowledgeable physicians, observe prescription practices, and are polite. They avoid facilities that use injections too liberally or over-prescribe medication.
Representing Complex Events Simply
Creators: name: Lebowitz, Michael
Publisher: name: Columbia University
Year: 1981
Subjects: Computer science
Computer software--Development--Computer programs
Computational complexity
Domain-specific programming languages

description: Complex events can often be treated as single units for purposes of cognitive processing. This paper presents a scheme for representing events that was used in the creation of the program IPP (the Integrated Partial Parser). This scheme, in effect, consists of rules for the creation of a set of primitive-like elements for a given domain. The specific structures needed to represent events in one domain, news stories about international terrorism, are presented.
title: The Influence of the Visco-Elastic Properties of Covering Materials on the Rolling Process of Two Cylinders
Creators: name: Scheuter, Karl R.
name: Pfeiffer, Günter
name: Technical Association Of The Graphic Arts Corporation
Publisher: name: UNSPECIFIED
Year: 1969

description: The stress strain behaviour of visco-elastic Materials has been investicated . A special measuring device was used d to characterize the visco-elastic properties of cylinder coverings. The data for some typical covering materials used for inking and pressure rollers will be discussed . A theoretical analysis of the stress and strain in the nip will be presented as a function o f the visco-elastic properties of the materials. The results wlill be compared to measurements of the vertical and tangential forces developed between a hard roller and an inking roller and the pressure distribution in the nip .
ФАКТОРЫ РАЗВИТИЯ ТАЛАНТЛИВОСТИ УЧЕНИКОВ НАЧАЛЬНЫХ КЛАССОВ
Creators: name: Гаффорова, Фарангиз
name: Эргашева, Ранo
name: Абдурахмонова, Динара
Publisher: name: Zenodo
Year: 2025

description: В данной статье рассматривается развитие талантов учащихся начальной школы как важная и чрезвычайно ответственная задача. Давайте рассмотрим некоторые рекомендации и факторы развития талантов учащихся начальной школы:
The First MAXI/GSC Catalog in the High Galactic-Latitude Sky
Creators: name: Hiroi, Kazuo
name: Ueda, Yoshihiro
name: Isobe, Naoki
name: Hayashida, Masaaki
name: Eguchi, Satoshi
name: Sugizaki, Mutsumi
name: Kawai, Nobuyuki
name: Tsunemi, Hiroshi
name: Matsuoka, Masaru
name: Mihara, Tatehiro
name: Yamaoka, Kazutaka
name: Ishikawa, Masaki
name: Kimura, Masashi
name: Kitayama, Hiroki
name: Kohama, Mitsuhiro
name: Matsumura, Takanori
name: Morii, Mikio
name: Nakagawa, Yujin E.
name: Nakahira, Satoshi
name: Nakajima, Motoki
name: Negoro, Hitoshi
name: Serino, Motoko
name: Shidatsu, Megumi
name: Sootome, Tetsuya
name: Sugimori, Kousuke
name: Suwa, Fumitoshi
name: Toizumi, Takahiro
name: Tomida, Hiroshi
name: Tsuboi, Yohko
name: Ueno, Shiro
name: Usui, Ryuichi
name: Yamamoto, Takayuki
name: Yamazaki, Kyohei
name: Yoshida, Atsumasa
name: Collaboration, the MAXI
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the first unbiased source catalog of the Monitor of All-sky X-ray Image (MAXI) mission at high Galactic latitudes ($|b| > 10^{\circ}$), produced from the first 7-month data (2009 September 1 to 2010 March 31) of the Gas Slit Camera in the 4--10 keV band. We develop an analysis procedure to detect faint sources from the MAXI data, utilizing a maximum likelihood image fitting method, where the image response, background, and detailed observational conditions are taken into account. The catalog consists of 143 X-ray sources above 7 sigma significance level with a limiting sensitivity of $\sim1.5\times10^{-11}$ ergs cm$^{-2}$ s$^{-1}$ (1.2 mCrab) in the 4--10 keV band. Among them, we identify 38 Galactic/LMC/SMC objects, 48 galaxy clusters, 39 Seyfert galaxies, 12 blazars, and 1 galaxy. Other 4 sources are confused with multiple objects, and one remains unidentified. The log $N$ - log $S$ relation of extragalactic objects is in a good agreement with the HEAO-1 A-2 result, although the list of the brightest AGNs in the entire sky has significantly changed since that in 30 years ago.
description: 14 pages, including 10 figures and 3 tables, PASJ accepted
Modeling model uncertainty
Creators: name: Onatski, Alexei
name: Williams, Noah
Publisher: name: Columbia University
Year: 2002
Subjects: Economics
Finance

description: Recently there has been a great deal of interest in studying monetary policy under model uncertainty. We develop new methods to analyze different sources of uncertainty in one coherent structure, which is useful for policy decisions. We show how to estimate the size of the uncertainty based on time series data, and how to incorporate this uncertainty in choosing policy. In particular, we develop a new approach for modeling uncertainty called model error modeling. The approach imposes additional structure on the errors of an estimated model, and builds a statistical description of the uncertainty around the model. We develop both parametric and nonparametric specifications of this approach, and use them to estimate uncertainty in a small model of the US economy. We then use our estimates to compute Bayesian and minimax robust policy rules, which are designed to perform well in the face of uncertainty.
Dynamics of twisted vortex bundles and laminar propagation of the vortex front
Creators: name: Sonin, E. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The paper is studying the dynamics of twisted vortex bundles, which were detected in experimental investigations of superfluid turbulence in superfluid 3He-B. The analysis shows that a linear torsion oscillation of a vortex bundle is a particular case of the slow vortex mode related with the inertial wave, which was already investigated in the past in connection with observation of the Tkachenko waves in superfluid 4He and the experiments on the slow vortex relaxation in superfluid 3He-B. The paper addresses also a twisted vortex bundle terminating at a lateral wall of a container starting from the elementary case when the bundle reduces to a single vortex. The theory considers the laminar regime of the vortex-bundle evolution and investigates the Glaberson-Johnson-Ostermeier instability of the laminar regime, which is a precursor for the transition to the turbulent regime at strong twist of the bundle. The propagation and the rotation velocities of the vortex front (the segment of the vortex bundle diverging to the wall) can be found from the equations of balance for the linear and the angular momenta, and the energy. It is demonstrated that the vortex front can move with finite velocity even in the absence of mutual friction (the T = 0 limit). The theory is compared with experimental results on vortex-front propagation in superfluid 3He-B.
description: 28 pages, 1 figure, essentially extended and revised version
Inferring LISP Programs from Examples
Creators: name: Shaw, David Elliot
name: Swartout, William R.
name: Green, C. Cordell
Publisher: name: Columbia University
Year: 1975
Subjects: Computer science
LISP (Computer program language)
High performance computing--Research

description: A program is described which infers certain recursive LiSP programs from single example input-output parts. Synthesized programs may recur in more than one argument, and may involve the synthesis of auxilliary functions. An actual user session with the program, called EXAMPLE, is presented, and the operation of the program and its important heuristics are outlined.
An ultrafast image recovery and recognition system implemented with nanomagnets possessing biaxial magnetocrystalline anisotropy
Creators: name: D'Souza, Noel
name: Atulasimha, Jayasimha
name: Bandyopadhyay, Supriyo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A circular magnetic disk with biaxial magnetocrystalline anisotropy has four stable magnetization states which can be used to encode a pixel's shade in a black/gray/white image. By solving the Landau-Lifshitz- Gilbert equation, we show that if moderate noise deflects the magnetization slightly from a stable state, it always returns to the original state, thereby automatically de-noising the corrupted image. The same system can compare a noisy input image with a stored image and make a matching decision using magneto-tunneling junctions. These tasks are executed at ultrahigh speeds (~2 ns for a 512\times512 pixel image).
description: Submitted to Applied Physics Letters
Interactive effects of O2 level and Fe supply on growth, morphology, and mineral allocation of hybrid Napier grass (Pennisetum purpureum ? P. americanum cv. Pakchong 1)
Creators: name: Janjira Muenrew
name: Arunothai Jampeetong
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2018
Subjects: aerenchyma
Fe toxicityN uptake rates
Pakchong 1
O2 stress

description: Songklanakarin Journal of Science and Technology, 40, 6, 1271-1280
Differential Modulation for Bi-directional Relaying with Analog Network Coding
Creators: name: Song, Lingyang
name: Li, Yonghui
name: Huang, Anpeng
name: Jiao, Bingli
name: Vasilakos, Athanasios V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we propose an analog network coding scheme with differential modulation (ANC-DM) using amplify-and-forward protocol for bidirectional relay networks when neither the source nodes nor the relay knows the channel state information (CSI). The performance of the proposed ANC-DM scheme is analyzed and a simple asymptotic bit error rate (BER) expression is derived. The analytical results are verified through simulations. It is shown that the BER performance of the proposed differential scheme is about 3 dB away from that of the coherent detection scheme. To improve the system performance, the optimum power allocation between the sources and the relay is determined based on the simplified BER. Simulation results indicate that the proposed differential scheme with optimum power allocation yields 1-2 dB performance improvement over an equal power allocation scheme.
description: 19 pages, 7 figures
Additional file 1 of Time-resolved multi-omics analysis reveals the role of nutrient stress-induced resource reallocation for TAG accumulation in oleaginous fungus Mortierella alpina
Creators: name: Lu, Hengqian
name: Chen, Haiqin
name: Tang, Xin
name: Yang, Qin
name: Zhang, Hao
name: Chen, Yong Q.
name: Chen, Wei
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Ecology
subject: Marine Biology
subject: Cancer
subject: Plant Biology
subject: Computational Biology

description: Additional file 1. Additional Table S1 and Figures S1–S10.
Identification and characterization of DyP peroxidases from Rhodococcus jostii RHA1
Creators: name: Roberts, Joseph N.
Publisher: name: University of British Columbia
Year: 2011

description: The lignin-degrading soil bacterium Rhodococcus jostii RHA1 contains two genes encoding DyP-type peroxidases. Based on phylogenetic studies, the enzymes were classified as DypA, which carries a TAT sequence, and DypB, which carries a C-terminal sequence predicted to target it to an icosahedral protein nanocompartment. Consistent with other DyPs, DypA showed 6-fold greater apparent specificity for the anthraquinone dye Reactive Blue 4 (kcat/Km = 12,800 ± 600 M⁻¹1s⁻¹) than either ABTS or pyrogallol. By contrast, DypB showed greatest apparent specificity for ABTS (kcat/Km = 2000 ± 100 M⁻¹s⁻¹) and also oxidized Mn(II) (kcat/Km = 25.1 ± 0.1 M⁻¹s⁻¹). Herein the x-ray crystal structure of DypB is presented to 1.4 Å resolution, revealing a hexa-coordinated heme molecule and an additional Asn residue in the active site which is unique to DypB. Analysis of the DypB structural surface provides additional contrast to the structure of plant peroxidases, and identifies a potential substrate-binding pocket distal to the heme center. Assay of gene deletion mutants using a colorimetric lignin degradation assay reveals that a ΔdypB mutant shows greatly reduced lignin degradation activity, consistent with a role in lignin breakdown. Recombinant DypB protein also shows activity in the colorimetric assay, which is increased 5-fold in the presence of Mn(II). Overall, the different reactivities of the RHA1 DyPs with reducing substrates and Mn(II) enhanced ligninolytic activity of DypB have important implications for biotechnological applications.
Multilateral trade negotiations, bilateral opportunism and the rules of GATT/WTO
Creators: name: Bagwell, Kyle
name: Staiger, Robert W.
Publisher: name: Columbia University
Year: 2002
Subjects: Economics

description: Trade negotiations occur through time and between the governments of many countries. An important issue is thus whether the value of concessions that a government wins in a current negotiation may be eroded in a future bilateral negotiation to which it is not party. We identify rules of negotiation that serve to protect the welfare of governments that are not participating in the bilateral negotiation. Our main finding is that the two central principles of GATT/WTO - non-discrimination (MFN) and reciprocity - preserve the welfare of non-participating governments and therefore offer a "first-line of defense" against bilateral opportunism. We argue that the GATT/WTO nullification-or-impairment rule then constitutes an important "second-line of defense." Finally, we confirm that in the absence of rules, or under weaker rules (e.g., MFN alone), the potential for bilateral opportunism can be severe.
Dynamics of a lattice Universe
Creators: name: Bruneton, Jean-Philippe
name: Larena, Julien
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We find a solution to Einstein field equations for a regular toroidal lattice of size L with equal masses M at the centre of each cell; this solution is exact at order M/L. Such a solution is convenient to study the dynamics of an assembly of galaxy-like objects. We find that the solution is expanding (or contracting) in exactly the same way as the solution of a Friedman-Lemaître-Robertson-Walker Universe with dust having the same average density as our model. This points towards the absence of backreaction in a Universe filled with an infinite number of objects, and this validates the fluid approximation, as far as dynamics is concerned, and at the level of approximation considered in this work.
description: 14 pages. No figure. Accepted version for Classical and Quantum Gravity
Weyl-Invariant Higher Curvature Gravity Theories in n Dimensions
Creators: name: Tanhayi, M. Reza
name: Dengiz, Suat
name: Tekin, Bayram
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the particle spectrum and the unitarity of the generic n-dimensional Weyl-invariant quadratic curvature gravity theories around their (anti-)de Sitter [(A)dS] and flat vacua. Weyl symmetry is spontaneously broken in (A)dS and radiatively broken at the loop level in flat space. Save the three dimensional theory (which is the Weyl-invariant extension of the new massive gravity), the graviton remains massless and the unitarity requires that the only viable Weyl-invariant quadratic theory is the Weyl-invariant extension of the Einstein-Gauss-Bonnet theory. The Weyl gauge field on the other hand becomes massive. Symmetry breaking scale fixes all the dimensionful parameters in the theory.
description: 14 pages, references added, To appear in Phys. Rev. D
Determining the number of factors from empirical distribution of eigenvalues
Creators: name: Onatski, Alexei
Publisher: name: Columbia University
Year: 2005
Subjects: Economics

description: We develop a new consistent and simple to compute estimator of the number of factors in the approximate factor models of Chamberlain and Rothchild (1983). Our setting requires both time series and cross-sectional dimensions of the data to be large. The main theoretical advantage of our estimator relative to the previously proposed ones is that it works well even in the situation when the portion of the observed variance attributed to the factors is small relative to the variance due to the idiosyncratic term. This advantage arises because the estimator is based on a Law-of-Large- Numbers type regularity for the idiosyncratic components of the data, as opposed to the estimators based on the assumption that a significant portion of the variance is explained by the systematic part. Extensive Monte Carlo analysis shows that our estimator outperforms the recently proposed Bai and Ng (2002) estimators in finite samples when the "signal-to-noise" ratio is relatively small. We apply the new estimation procedure to determine the number of pervasive factors driving stock returns for the companies traded on NYSE, AMEX, and NASDAQ in the period from 1983 to 2003. Our estimate is equal to 8.
Principal Components Estimation and Identification of the Factors
Creators: name: Bai, Jushan
name: Ng, Serena
Publisher: name: Columbia University
Year: 2011
Subjects: Economics

description: It is known that the principal component estimates of the factors and the loadings are rotations of the underlying latent factors and loadings. We study conditions under which the latent factors can be estimated asymptotically without rotation. We derive the limiting distributions for the factor estimates when N and T are large and make precise how identification of the factors affects inference based on factor augmented regressions. We also consider factor models with additive individual and time effects.
What do trade negotiators negotiate about? Empirical evidence from the World Trade Organization
Creators: name: Bagwell, Kyle
name: Staiger, Robert W.
Publisher: name: Columbia University
Year: 2006
Subjects: Economics

description: What do trade negotiators negotiate about? There are two distinct theoretical approaches in the economics literature that offer an answer to this question: the terms-of-trade theory and the commitment theory. The terms of-trade theory holds that trade agreements are useful to governments as a means of helping them escape from a terms-of-trade-driven Prisoners' Dilemma. The commitment theory holds that trade agreements are useful to governments as a means of helping them make commitments to the private sector. These theories are not mutually exclusive, but there is little direct evidence on the empirical relevance of either. We attempt to investigate empirically the purpose served by market access commitments negotiated in the World Trade Organization. We find broad support for the terms-of-trade theory in the data. We claim more tentatively to find support in the data for the commitment theory as well.
Alternate two-dimensional quantum walk with a single-qubit coin
Creators: name: Di Franco, C.
name: Gettrick, M. Mc
name: Machida, T.
name: Busch, Th.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have recently proposed a two-dimensional quantum walk where the requirement of a higher dimensionality of the coin space is substituted with the alternance of the directions in which the walker can move [C. Di Franco, M. Mc Gettrick, and Th. Busch, Phys. Rev. Lett. {\bf 106}, 080502 (2011)]. For a particular initial state of the coin, this walk is able to perfectly reproduce the spatial probability distribution of the non-localized case of the Grover walk. Here, we present a more detailed proof of this equivalence. We also extend the analysis to other initial states, in order to provide a more complete picture of our walk. We show that this scheme outperforms the Grover walk in the generation of $x$-$y$ spatial entanglement for any initial condition, with the maximum entanglement obtained in the case of the particular aforementioned state. Finally, the equivalence is generalized to wider classes of quantum walks and a limit theorem for the alternate walk in this context is presented.
description: 9 pages, 9 figures, RevTeX4
Conic SMO
Creators: name: Vovsha, Ilia
Publisher: name: Columbia University
Year: 2011
Subjects: Computer science

description: We derive an SMO-like algorithm for the optimization problem arising from the Second Order Cone Programming formulation of support vector machines (SVMs) for classification. Due to the square root term in the objective of the form, we cannot easily compute the location of the extrema using Newton‘s formula. Instead we modify the analytic solution proposed for SMO (Platt, 1999), to account for the particular objective function and partial derivatives. We then establish some theoretical properties of the algorithm based on the results of (Bordes et al., 2005), and develop practical working set selection similar to (Fan et al., 2005). In addition, we propose an efficient implementation, and compare the convergence rate of Conic-SMO and SMO on synthetic data.
States, models and information: A reconsideration of Ellsberg's paradox
Creators: name: Amarante, Massimiliano
Publisher: name: Columbia University
Year: 2006
Subjects: Economics

description: We show that a general process of decision making involves uncertainty about two different sets: the domain of the acts and another set, which we call the set of models for the decision maker. We study the effect of different information structures on the set of models, and prove the existence of a dichotomy: either the decision maker's ranking of the acts obeys Subjective Expected Utility theory or there are many events to which probabilities cannot be assigned. We use this result to formalize the idea of Knightian Uncertainty. The relevance of information structures associated to Knightian Uncertainty is shown by means of examples, one of which is a version of Ellsberg's experiments. Our findings show that a decision maker faces, generally speaking, uncertainties of two different types - "uncertainty about which state obtains" and "uncertainty about how the world works" and that Savage's theory considers only uncertainty of the first type. Finally, in situations of Knightian Uncertainty, we identify the class of events to which probabilities can be assigned, and study the relation with the class of unambiguous events in the sense of [13] and [25].
Photographers and Collective Licensing: A Short History with No Ending
Creators: name: Mopsik, Eugene
Publisher: name: Columbia University
Year: 2011
Subjects: Intellectual property
Copyright clearinghouses
Licenses
Photography
Conference papers and proceedings

description: In the early 1990s, the American Society of Media Photographers ("ASMP") explored the possibility of a collective licensing solution to help manage the myriad uses of photography that were being created by a new means of digital distribution: the Internet. The entity was called the Media Photographers Copyright Agency ("MPCA"). Photographers were not ready for it, stock agencies were afraid of it and funding was scarce. It failed.
Additional file 1 of The predictive role of the neutrophil–lymphocyte ratio in the prognosis of adult patients with stroke
Creators: name: Wan, Jinzhao
name: Wang, Xiaoxiong
name: Zhen, Yunbo
name: Chen, Xin
name: Yao, Penglei
name: Liu, Wenwu
name: Lu, Enzhou
name: Du, Yiming
name: Liu, Huailei
name: Zhao, Shiguang
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Hematology

description: Additional file 1: Table S1. Covariate analysis of this study
The economic tragedy of the XXth century: Growth in Africa
Creators: name: Artadi, Elsa V.
name: Sala-I-Martin, Xavier
Publisher: name: Columbia University
Year: 2003
Subjects: Economics
Africans

description: The dismal growth performance of Africa is the worst economic tragedy of the XXth century. We document the evolution of per capita GDP for the continent as a whole and for subset of countries south of the Sahara desert. We document the worsening of various income inequality indexes and we estimate poverty rates and headcounts. We then analyze some of the central robust determinants of economic growth reported by Sala-i-Martin, Doppelhofer and Miller (2003) and project the annual growth rates Africa would have enjoyed if these key determinants had taken OECD rather than African values. Expensive investment goods, low levels of education, poor health, adverse geography, closed economies, too much public expenditure and too many military conflicts are seen as key explanations of the economic tragedy.
Korean multinationals show solid recovery after global crisis
Creators: name: Moon, Hwy-Chang
Publisher: name: Columbia University
Year: 2010
Subjects: Business
Finance

description: The Institute of International Affairs of the Graduate School of International Studies (GSIS) at Seoul National University in Seoul, and the Vale Columbia Center on Sustainable International Investment (VCC) at Columbia University in New York, are releasing the first annual report on leading Korean multinationals. The research for this report was conducted in 2010 and covers the period 2007 to 2009.
Correlations between CME parameters and sunspot activity
Creators: name: Du, Z. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Smoothed monthly mean coronal mass ejection (CME) parameters (speed, acceleration, central position angle, angular width, mass and kinetic energy) for Cycle 23 are cross-analyzed, showing a high correlation between most of them. The CME acceleration (a) is found to be highly correlated with the reciprocal of its mass (M), with a correlation coefficient r = 0:899. The force (Ma) to drive a CME is found to be well anti-correlated with the sunspot number (Rz), r = -0.750. The relationships between CME parameters and Rz can be well described by an integral response model with a decay time scale of about 11 months. The correlation coefficients of CME parameters with the reconstructed series based on this model (r1 = 0.886) are higher than the linear correlation coefficients of the parameters with Rz (r0 = 0.830). If a double decay integral response model is used (with two decay time scales of about 6 and 60 months), the correlations between CME parameters and Rz improve (r2 = 0.906). The time delays between CME parameters with respect to Rz are also well predicted by this model (19/22 = 86%); the average time delays are 19 months for the reconstructed and 22 months for the original time series. The model implies that CMEs are related to the accumulation of solar magnetic energy. The relationships found can help to understand the mechanisms at work during the solar cycle.
description: 12 pages, 5 figures, accepted for publication in Solar Physics
Additional file 1: of Risk prediction model of dyslipidaemia over a 5-year period based on the Taiwan MJ health check-up longitudinal database
Creators: name: Yang, Xinghua
name: Xu, Chaonan
name: Wang, Yunfeng
name: Cao, Chunkeng
name: Tao, Qiushan
name: Zhan, Siyan
name: Sun, Feng
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: Model application. (DOCX 50 kb)
Radius Dependent Angular Momentum Evolution in Low-Mass Stars. I
Creators: name: Reiners, Ansgar
name: Mohanty, Subhanjoy
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Angular momentum evolution in low-mass stars is determined by initial conditions during star formation, stellar structure evolution, and the behaviour of stellar magnetic fields. Here we show that the empirical picture of angular momentum evolution arises naturally if rotation is related to magnetic field strength instead of to magnetic flux, and formulate a corrected braking law based on this. Angular momentum evolution then becomes a strong function of stellar radius, explaining the main trends observed in open clusters and field stars at a few Gyr: the steep transition in rotation at the boundary to full convection arises primarily from the large change in radius across this boundary, and does not require changes in dynamo mode or field topology. Additionally, the data suggest transient core-envelope decoupling among solar-type stars, and field saturation at longer periods in very low-mass stars. For solar-type stars, our model is also in good agreement with the empirical Skumanich law. Finally, in further support of the theory, we show that the predicted age at which low-mass stars spin down from the saturated to unsaturated field regimes in our model corresponds remarkably well to the observed lifetime of magnetic activity in these stars.
description: accepted by ApJ
Preferences and Equilibrium in Monopoly and Duopoly
Creators: name: Chen, Yongmin
name: Riordan, Michael H.
Publisher: name: Columbia University
Year: 2009
Subjects: Economics

description: This paper takes the new approach of using a copula to characterize consumer preferences in a discrete choice model of product differentiation, and applies it to the economics of monopoly and duopoly. The comparative statics of demand strength and preference diversity, both properties of the marginal distribution of values for each product variety, are strikingly similar across market structures. Preference dependence, a property of the copula and an indicator of product differentiation, is a key determinant of whether prices are higher in multiproduct industries compared to single-product monopoly. Furthermore, the effects of preference on prices and profits influence equilibrium product selection. Remarkably, a horizontally-differentiated duopoly sometimes can foreclose a higher-quality monopoly to the detriment of consumer and social welfare.
Calibration of piezoelectric positioning actuators using a reference voltage-to-displacement transducer based on quartz tuning forks
Creators: name: Castellanos-Gomez, Andres
name: Arroyo, Carlos R.
name: Agraït, Nicolás
name: Rubio-Bollinger, Gabino
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use a piezoelectric quartz tuning fork to calibrate the displacement of ceramic piezoelectric scanners which are widely employed in scanning probe microscopy. We measure the static piezoelectric response of a quartz tuning fork and find it to be highly linear, non-hysteretic and with negligible creep. These performance characteristics, close to those of an ideal transducer, make quartz transducers superior to ceramic piezoelectric actuators. Furthermore, quartz actuators in the form of a tuning fork have the advantage of yielding static displacements comparable to those of local probe microscope scanners. We use the static displacement of a quartz tuning fork as a reference to calibrate the three axis displacement of a ceramic piezoelectric scanner. Although this calibration technique is a non-traceable method, it can be more versatile than using calibration grids because it enables to characterize the linear and non-linear response of a piezoelectric scanner in a broad range of displacements, spanning from a fraction of a nanometer to hundreds of nanometers. In addition, the creep and the speed dependent piezoelectric response of ceramic scanners can be studied in detail.
description: 9 pages, 3 figures
Blantyre, Malawi: Potential Opportunities for Investment
Creators: name: KPMG India
Publisher: name: Columbia University
Year: 2009
Subjects: Finance
Business

description: The report contains the first authoritative data on FDI flows for 2006 and forecasts flows until 2011, with 2007 set for a new record. It also contains the results of a survey of over 600 corporate executives concerning their investment intentions for the next five years. World Investment Prospects to 2011 pays special attention to the rise of FDI protectionism and regulatory risk.
Optimization of succinic acid production by succinic acid bacteria isolated in Thailand
Creators: name: Natcha Pinkian
name: Sukanya Phuengjayaem
name: Somboon Tanasupawat
name: Siriluk Teeradakorn
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2018
Subjects: Clostridium
Enterococcus
Lactobacillus
succinic acid
16S rRNA gene sequence

description: Songklanakarin Journal of Science and Technology, 40, 6, 1281-1290
Strong gravitational lensing by a rotating non-Kerr compact object
Creators: name: Chen, Songbai
name: Jing, Jiliang
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study the strong gravitational lensing in the background of a rotating non-Kerr compact object with a deformed parameter $ε$ and an unbound rotation parameter $a$. We find that the photon sphere radius and the deflection angle depend sharply on the parameters $ε$ and $a$. For the case in which the black hole is more prolate than a Kerr black hole, the photon sphere exists only in the regime $ε\leqε_{max}$ for prograde photon. The upper limit $ε_{max}$ is a function of the rotation parameter $a$. As $ε>ε_{max}$, the deflection angle of the light ray closing very to the naked singularity is a positive finite value, which is different from those in both the usual Kerr black hole spacetime and in the rotating naked singularity described by Janis-Newman-Winicour metric. For the oblate black hole and the retrograde photon, there does not exist such a threshold value. Modelling the supermassive central object of the Galaxy as a rotating non-Kerr compact object, we estimated the numerical values of the coefficients and observables for gravitational lensing in the strong field limit.
description: 16 pages, 10 figures. The corrected version to be appeared in Phys. Rev. D
Compressive strengths of Maha Sarakham salt under constant ?m and constant ?3 stress paths
Creators: name: Kiattisak Artkhonghan
name: Suratwadee Sartkaew
name: Supattra Khamrat
name: Kittitep Fuenkajorn
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2018
Subjects: compression
extension
polyaxial loading
intermediate principal stress

description: Songklanakarin Journal of Science and Technology, 40, 6, 1291-1299
Feeding value of dried cashew nut testa in finishing pigs: Effects on nutrient digestibility and gut morphology
Creators: name: Pattaraporn Poommarin
name: Rommel C. Sulabo
name: Sevilla, Cesar C.
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2018
Subjects: dried cashew nut testa
tannin
nutrient digestibility
gut morphology
finishing pigs

description: Songklanakarin Journal of Science and Technology, 40, 6, 1300-1305
Charge localization and dynamical spin locking in double quantum dots driven by ac magnetic fields
Creators: name: Gómez-León, Álvaro
name: Platero, Gloria
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate electron localization and dynamical spin locking induced by ac magnetic fields in double quantum dots. We demonstrate that by tuning the ac magnetic fields parameters, i.e., the field intensity, frequency, and the phase difference between the fields within each dot, coherent destruction of tunneling (and thus charge localization) can be achieved. We show that in contrast with ac electric fields, ac magnetic fields are able to induce spin locking, i.e., to freeze the electronic spin, at certain field parameters. We show how the symmetry of the Hamiltonian determines the quasienergy spectrum which presents degeneracies at certain field parameters, and how it is reflected in the charge and spin dynamics.
description: 5 pages, 5 figures