cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sahyādrikhaṇḍ The Story Of The Brāmhaṇ
Creators: name: RODRIGUES, TENSING CARLOS
Publisher: name: figshare
Year: 2019
Subjects: subject: History
subject: Anthropology
subject: FOS: Sociology
subject: Archaeology
subject: Geography
subject: Sociology

description: The story of the brāmhaṇ is an enigma indeed. Going by the best of the traditions, the brāmhaṇ chose to arrive in the ‘graveyard’ of the Sarasvatī valley civilization around 2,000 BCE, after being driven out of their Central Asian steppes by the 4.2 ka BP (2,200 BCE) aridity event. Did the brāmhaṇ really settle in the Sarasvatī valley ? Or, did they just push to the upper reaches of the Yamunā, and then down along its course into the Yamunā-Gangā doab – the Kuru-Pañcāl, ‘the land of spotless spiritual pre-eminence’, ‘where the black antelope roams free’ (Vasiṣṭha Dharma Sūtra, 1. 14-15) ? We do not really know. We have seen that the literary evidence from Saṁskṛt texts seems to suggest that there was little love lost between the brāmhaṇ and the Sarasvatī valley; most of the texts seem to look down upon the Sarasvatī valley. But then, what about the sārasvat, who clearly bear the name of their ‘best mother’ (Rig Veda 2.41.16) ?
Design of Ambient Backscatter Training for Wireless Power Transfer
Creators: name: Idrees, Sahar
name: Zhou, Xiangyun
name: Durrani, Salman
name: Niyato, Dusit
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Wireless power transfer (WPT) using energy beamforming is a promising solution for low power Internet of Things (IoT) devices. In this work, we consider WPT from an energy transmitter (ET) employing retrodirective WPT using a large phased antenna array to an energy receiver (ER) capable of ambient backscatter. The advantage of retrodirective WPT is that no explicit channel estimation is needed at the ET and the use of ambient backscattering eliminates the need for active transmission at the ER. We propose a training sequence design, i.e., pattern of varying the reflection coefficient at the ER, to eliminate the direct-link interference from the ambient source. We show that when the ambient symbol duration is known, the ambient interference is fully cancelled by the proposed design. We analytically model the system and find the average harvested power at the ER considering Nakagami-$m$ fading channels and non-linear energy harvesting model. Our results clearly show that the proposed solution is robust to a small timing offset mismatch at the correlator. When interference from undesired neighbouring sources in the ambient environment is not significant, the ER can successfully harvest tens to hundreds of $μ$W of power, which is an important improvement for low-power IoT devices.
Clay Minerals Functionalized by Magnetite (Fe3O4) Nanoparticles as Solid Platform for Removal of Chromium (VI) from Water: Characterization, Kinetics, Thermodynamics, Analytical Utility and Reusability Studies
Creators: name: H.M Harbi
name: A.H Al-Baqawi
name: M.S El-Shahawi
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Computational Biology

description: A new protocol for the extraction of chromium (VI) from water is proposed. The established method was based upon retention of chromium (VI) species from aqueous HCl solution (pH = 0.0-2.0) as ion associate of chlorochromate [CrO3Cl]-aq anions onto the clay minerals (CMs) functionalized by magnetite (Fe3O4) nanoparticles (NPs) as solid platform (Fe3O4NPs/CMs). The nanocomposite Fe3O4NPs/CMs was characterized using various instrumental techniques. The nanocomposite enhanced chromium (VI) uptake via the synergic effect of the modified surface area and surface-modified groups, solvent extraction based ion exchange, and electrostatic adsorption. Chromium (VI) sorption was fast and fitted with pseudo-second order with a rate constant of 0.078 min-1 and half-life time (t1/2) of 1.2±0.04 min. The positive and negative values of the enthalpy (ΔH =3.08 kJmol-1) and the Gibbs free energy (ΔG = -5.539 KJmol-1) indicate endothermic, spontaneous, and physical in nature of chromium (VI) uptake and the binding of the [CrO3Cl]-aq onto the nanocomposites was proceeded via electrostatic interactions. Sorbent packed column was tested for chromium (VI) uptake from water, subsequently recovered with NaOH (1.0 mol L-1), and analyzed. Sorbent packed column was reused 3-4 times towards chromium (VI) in water. The sorbent could easily be regenerated with NaOH.
Semiclassical stability analysis of a two-photon laser including spatial variation of the cavity field
Creators: name: Abdel-Aty, Mahmoud
name: Obada, Abdel-Shafy F.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the dynamics of a two-photon laser under conditions where the spatial variation of the cavity field along the cavity axis is important. Main attention is paid to linear stability analysis and numerical investigation of a two-photon laser for the Maxwell-Bloch equations. The model assumes pumping to the upper state of the two-photon transition. We consider the Maxwell-Bloch equations on the basis of which we study the stability analysis of the steady state of the system. The system is taken to be contained in a ring-laser cavity. Asymptotic expansion of the eigenvalue and analytic information are obtained in some realistic limits, such as very large reflectivity, very small cavity losses, or very small population relaxation rate. The results are illustrated with an application to a specific atomic system (Potassium) as an amplifying medium.
description: 17 pages, 3 figures
Tanipone hirsuta Bolton & Fisher 2012
Creators: name: Bolton, Barry
name: Fisher, Brian L.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Tanipone
Tanipone hirsuta

description: Characters of hirsuta species group (workers)
1 Each glandular patch on the tergite of AIII consists of a mass of large, coarse, closely-packed, deep punctures. The individual punctures are separated only by narrow, flattened rims between them and the surfaces of the rims are densely microsculptured and dull. The glandular patches are not depressed into the surface of the sclerite and each puncture gives rise to a short, curved seta that is subappressed and directed posteriorly (Figs 82–83).
 2 Cephalic pilosity relatively dense. In full-face view side of head in front of eye with several (more than one) projecting setae of varying length; side of head below outline of eye with 2–3 setae that project laterally; side of head behind level of eye with several projecting setae of varying length. In profile the entire dorsum of the head and body with numerous standing setae of varying lengths, far more than the strictly limited number described below for the maculata group and too many to count easily.
3 With mesofemur in dorsal view standing setae occur on both the anterior and posterior surfaces; setae are always present and are not restricted to the apex of the femur. Metafemur in the same view is similarly hirsute.
description: Published as part of Bolton, Barry & Fisher, Brian L., 2012, Taxonomy of the cerapachyine ant genera Simopone Forel, Vicinopone gen. n. and Tanipone gen. n. (Hymenoptera: Formicidae) 3283, pp. 1-101 in Zootaxa 3283 (1) on page 79, DOI: 10.11646/zootaxa.3283.1.1, http://zenodo.org/record/5249502
ORGANISATIONAL AND ECONOMIC FACTORS OF BUSINESS CONDITIONS AND RESULTS IN A PRIVATE ENTERPRISE
Creators: name: Zivkovic, Dragic
name: Jelic, Sreten
name: Zivkovic, Dragic
name: Jelic, Sreten
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Financial Economics
subject: International Relations/Trade
subject: production organisation
subject: conditions
subject: results
subject: financial effects
subject: economic principles

description: The objective was to analyse the properties of organisational and economic conditions known to be the principal business indices of an enterprise in order to show the impact on technical and technological segments of enterprise business activities. The ultimate goal was to make records on positive business trends expected to enhance future business activities.
Tunable parametric amplification of a graphene nanomechanical resonator in the nonlinear regime
Creators: name: Su, Zi-Jia
name: Ying, Yue
name: Song, Xiang-Xiang
name: Zhang, Zhuo-Zhi
name: Zhang, Qing-Hang
name: Cao, Gang
name: Li, Hai-Ou
name: Guo, Guang-Can
name: Guo, Guo-Ping
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Parametric amplification is widely used in nanoelectro-mechanical systems to enhance the transduced mechanical signals. Although parametric amplification has been studied in different mechanical resonator systems, the nonlinear dynamics involved receives less attention. Taking advantage of the excellent electrical and mechanical properties of graphene, we demonstrate electrical tunable parametric amplification using a doubly clamped graphene nanomechanical resonator. By applying external microwave pumping with twice the resonant frequency, we investigate parametric amplification in the nonlinear regime. We experimentally show that the extracted coefficient of the nonlinear Duffing force α and the nonlinear damping coefficient η vary as a function of external pumping power, indicating the influence of higher-order nonlinearity beyond the Duffing (~x^3) and van der Pol (~x^2 dx/dt) types in our device. Even when the higher-order nonlinearity is involved, parametric amplification still can be achieved in the nonlinear regime. The parametric gain increases and shows a tendency of saturation with increasing external pumping power. Further, the parametric gain can be electrically tuned by the gate voltage with a maximum gain of 10.2 dB achieved at the gate voltage of 19 V. Our results will benefit studies on nonlinear dynamics, especially nonlinear damping in graphene nanomechanical resonators that has been debated in the community over past decade.
Licensing Process of Jordan Research and Training Reactor-Lessons Learned: A Regulator's Perspective
Creators: name: Almomani, Belal
Publisher: name: figshare
Year: 2019
Subjects: Nuclear Engineering

description: Jordan Research and Training Reactor (JRTR) is the first nuclear reactor in Jordan imported from the Republic of Korea. Jordan’s Energy and Minerals Regulatory Commission (EMRC), as a successor to Jordan Nuclear Regulatory Commission (JNRC), issued a Construction Permit (CP) on Aug. 15, 2013 and an Operating License (OL) for 10 years on Nov. 13, 2017 for JRTR that is owned and managed by the Jordan Atomic Energy Commission (JAEC). As licensing of the JRTR is a first experience for EMRC; the EMRC faced some challenges during the licensing process. Thus, this paper discusses the Jordanian regulatory framework, the experience from the JRTR licensing process, and lessons learned from the JRTR project that would be taken into account in future similar projects.
Study on the properties of alkali-activated ferrochrome slag paste filling materials prepared from multiple industrial solid wastes
Creators: name: Yang, Shixing
name: Wang, Hongjiang
name: Wang, Jiandong
name: Liu, Shulong
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Space Science
Environmental Sciences not elsewhere classified
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Developmental Biology

description: The enormous utilization potential of industrial solid waste in cemented paste backfill (CPB) materials has attracted considerable interest. To solve the treatment challenges of ferrochrome slag (FS), a green ferrochrome slag cemented paste backfill materials (FS-CPB) composed of FS, desulfurization gypsum (DG) and granulated blast furnace slag (GBFS) was proposed in the study. The setting time, slump, uniaxial compressive strength (UCS), microstructure and leaching behavior of FS-CPB were systematically investigated. The results indicated that FS and DG showed retarding properties, while the setting time first decreased and then increased with the increase of polycarboxylate superplasticizers (PCE) and sodium silicate dosage. The slump was positively correlated with FS and sodium silicate dosage. However, the addition of DG and PCE can improve the fluidity properties. The optimum UCS values (3 d: 0.92 MPa; 7 d: 2.43 MPa; 14 d: 3.19 MPa; 28 d: 4.58 MPa) was obtained with 6% sodium silicate. Moreover, the primary hydration products of FS-CPB were ettringite, C-S-H gels and N-A-S-H gels. The leaching concentrations of total Cr and Cr(VI) satisfied the Class Ι water quality standard limits (≤1.5 mg∙L−1) in GB 8978–1996 and Class III water quality standard limits (≤0.05 mg∙L−1) in GB 14,848-2017, respectively. The research results in this paper can provide new options for cement substitutes in mining companies and guide the large-scale application of FS.
Sensitivity Study for Spent Nuclear Fuel Rod Integrity Under Drop Accident Condition
Creators: name: Almomani, Belal
name: Dongchan Jang
name: Sanghoon Lee
Publisher: name: figshare
Year: 2019
Subjects: subject: Nuclear Engineering
subject: Mechanical Engineering
subject: FOS: Mechanical engineering
subject: 90506 Structural Engineering
subject: FOS: Civil engineering

description: The structural integrity of spent fuel assembly is a key element for flexible and economic management of spent nuclear fuel (SNF) considering handling and transportation operations in most of the management scenarios. In order to better understand the SNF rod behavior under drop accident condition and to study the effects of various uncertain parameters on the fuel rod structural integrity, a detailed finite element (FE) model for pressurized water reactor (PWR) fuel rod is being developed using ABAQUS. This paper briefly describes the FE model and discusses the influence of the parameters relevant to design safety with concern ofpostirradiated fuel conditions such as degradation of cladding mechanical properties, pellet-tocladding mechanical interaction (PCMI), spacer grids (SGs) spring stiffness degradation, rod internal pressure (RIP). Through this study, we can initially prioritize the importance of data in managing and studying the structural integrity of the SNF in the next assessment stage. This work is part of a bigger research on the structural integrity of SNF in cask-loaded condition, whereby it might help in proposing guidelines for safe handling of SNF.
Additional file 8 of Multi-omics examination of Q fever fatigue syndrome identifies similarities with chronic fatigue syndrome
Creators: name: Raijmakers, Ruud P. H.
name: Roerink, Megan E.
name: Jansen, Anne F. M.
name: Keijmel, Stephan P.
name: Gacesa, Ranko
name: Li, Yang
name: Joosten, Leo A. B.
name: van der Meer, Jos W. M.
name: Netea, Mihai G.
name: Bleeker-Rovers, Chantal P.
name: Xu, Cheng-Jian
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Physiology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Additional file 8: Figure S5. Global correlation pattern of chronically fatigued patients. Global correlation pattern by means of average clustering showing significantly different correlations between gut microbiome and metabolites (FDR adjusted P ≤ 0.05) in chronically fatigued patients, i.e., QFS and CFS. The global correlation pattern exposes a correlation between Bifidobacterium_adolescentis and N-docosahexaenoyl GABA, and Subdoligranulum_unclassified and Arbekacin. QFS Q fever fatigue syndrome, CFS chronic fatigue syndrome.
The X-ray emission from Nova V382 Velorum: II. The super-soft component observed with BeppoSAX
Creators: name: Orio, M.
name: Parmar, A. N.
name: Greiner, J.
name: Ogelman, H.
name: Starrfield, S.
name: Trussoni, E.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Nova Velorum 1999 (V382 Vel) was observed by BeppoSAX 6 months after optical maximum and was detected as a bright X-ray supersoft source, with a count rate 3.454+-0.002 cts/s in the LECS. It was the softest and most luminous supersoft source observed with this instrument. The flux in the 0.1-0.7 keV range was not constant during the observation. It dropped by a factor of 2 in less than 1.5 hour and then was faint for at least 15 minutes, without significant spectral changes. The observed spectrum is not well fit with atmospheric models of a hot, hydrogen burning white dwarf. This is due mainly to a supersoft excess in the range 0.1-0.2 keV, but the fit can be significantly improved at higher energy if at least one emission feature is superimposed. We suggest that a ``pseudocontinuum'' was detected, consisting of emission lines in the supersoft X-ray range superimposed on the thermal continuum of a white dwarf atmosphere. As a result, an accurate determination of the effective temperature and gravity of the white dwarf at this post-outburst stage is not possible.
description: To appear in MNRAS
Positivity of relativistic spin network evaluations
Creators: name: Pfeiffer, Hendryk
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Let G be a compact Lie group. Using suitable normalization conventions, we show that the evaluation of GxG-symmetric spin networks is non-negative whenever the edges are labeled by representations of the form V\otimes V^* where V is a representation of G, and the intertwiners are generalizations of the Barrett--Crane intertwiner. This includes in particular the relativistic spin networks with symmetry group Spin(4) or SO(4). We also present a counterexample, using the finite group S_3, to the stronger conjecture that all spin network evaluations are non-negative as long as they can be written using only group integrations and index contractions. This counterexample applies in particular to the product of five 6j-symbols which appears in the spin foam model of the S_3-symmetric BF-theory on the two-complex dual to a triangulation of the sphere S^3 using five tetrahedra. We show that this product is negative real for a particular assignment of representations to the edges.
description: 15 pages, LaTeX2e, 8 figures
ANALYSIS OF INVESTMENT AND EXPORT ACTIVITIES OF SERBIA AGRICULTURE
Creators: name: Mihailovic, Branko
name: Cvijanovic, Drago
name: Hamovic, Vladana
name: Mihailovic, Branko
name: Cvijanovic, Drago
name: Hamovic, Vladana
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Land Economics/Use
subject: investments
subject: export
subject: agriculture
subject: transition

description: Agriculture in Serbia is confront with many problems, which are result of limitation that was begin in conditions of economic environment and agrar politic that has been leading after World War Second until decay SFRJ, difficulties that become at last fifteen years an difficulties at adapting of market economy. Agriculture in Serbia is load consequences of central mountain economy at part of property and land using. For development is necessary the policy that can influence on increase of producing by restructuring and investments that means clear owner right and making efficient land market, credit and input. Without considering how large is market economy, role of state policy is significant. If economy is more market, than state role is bigger.
Additional file 3 of Multi-omics examination of Q fever fatigue syndrome identifies similarities with chronic fatigue syndrome
Creators: name: Raijmakers, Ruud P. H.
name: Roerink, Megan E.
name: Jansen, Anne F. M.
name: Keijmel, Stephan P.
name: Gacesa, Ranko
name: Li, Yang
name: Joosten, Leo A. B.
name: van der Meer, Jos W. M.
name: Netea, Mihai G.
name: Bleeker-Rovers, Chantal P.
name: Xu, Cheng-Jian
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Physiology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Additional file 4: Table S1. Significantly in- and decreased metabolites when comparing QFS to HC, CFS to HC, and QFS to CFS. In- and decreased metabolites when comparing (A) QFS (n = 31) to HC (n = 50), (B) CFS (n = 50) to HC (n = 50), and (C) QFS (n = 31) to CFS (n = 50). Results are depicted as a coefficient with Std. Error and FDR. Statistical significance was attained if P ≤ 0.01. QFS Q fever fatigue syndrome, HC healthy controls, CFS chronic fatigue syndrome, Std. Error standard error, FDR False Discovery Rate.
Tanipone maculata Bolton & Fisher 2012
Creators: name: Bolton, Barry
name: Fisher, Brian L.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Tanipone
Tanipone maculata

description: Characters of maculata species group (workers)
 1 Each glandular patch on the tergite of AIII consists of a slightly depressed area that, with light microscopy, appears extremely finely shagreenate to microreticulate, or even almost smooth; without coarse, deep, denselypacked punctures. With scanning electron microscope resolution the area of the patch, at least in zona, is seen to contain abundant, very closely packed, papillae (Figs 84–85).
2 Cephalic pilosity relatively sparse and arranged in a fixed pattern. In full-face view side of head in front of eye without projecting setae or at most with a single projecting seta close to the posterior clypeal margin; side of head below outline of eye with a single seta that projects laterally; side of head behind level of eye with a single projecting seta; 2–4 setae along posterior margin of head. In profile, a single pair of erect setae immediately behind the frontal carinae and a single erect seta above the dorsal margin of each eye. In one specimen an additional short seta is present close to the ocelli. Any pubescence that is present is appressed, minute, inconspicuous and very sparse.
3 With mesofemur in dorsal view standing setae are either entirely absent, or are restricted to a single short, stout seta on the anterior surface close to the apex. Metafemur in the same view either lacks setae or has a single short seta close to the apex on its anterior surface. Minute appressed or slightly elevated pubescence is present on both femora.
 This group falls neatly into two complexes of related species. The varia complex (aversa, scelesta, varia) is characterised by the presence of a short preapical seta on the anterior surface of the mesotobia (best seen in dorsal view), the presence of at least one pair of setae on the propodeum, and the anterior setae on the tergite of AIII are at or very close to the anterior margins of the glandular patches. The maculata complex (cognata, maculata, zona) lacks setae in both these places, and the anterior setae on the tergite of AIII are considerably in front of the anterior margins of the glandular patches.
description: Published as part of Bolton, Barry & Fisher, Brian L., 2012, Taxonomy of the cerapachyine ant genera Simopone Forel, Vicinopone gen. n. and Tanipone gen. n. (Hymenoptera: Formicidae) 3283, pp. 1-101 in Zootaxa 3283 (1) on pages 79-80, DOI: 10.11646/zootaxa.3283.1.1, http://zenodo.org/record/5249502
Study on the Safety Classification Criteria and Methods of Mechanical Systems and Components for Open Pool-Type Research Reactors
Creators: name: Almomani, Belal
Publisher: name: figshare
Year: 2019
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering
subject: Nuclear Engineering

description: Different safety classification criteria and methods for systems, structures, and components (SSCs) of nuclear reactors, which are used among the countries exporting or importing nuclear reactor technology, could cause some difficulties in the nuclear technology trade and exchange. Thus, such different approaches of safety classification need to be harmonized to establish a global standard. The objective of this study is to propose a new practicable optimized criteria and method for safety classification of mechanical systems and components for water-moderated pool-type research reactors which have a core immersed in an open pool of water, that may be applicable for design, construction, operation, and maintenance of their systems, and components. The proposed safety classification criteria are derived from a comparative assessment study on the regulatory practices of SSCs safety classifications in various developed countries such as the Republic of Korea, United State, Canada, France, and the International Atomic Energy Agency (IAEA). The new compromised safety classiﬁcation approach described in this thesis is applicable to general open pool type research reactors.
Caroline Petit
Creators: name: Leibowitch, Jacques (1942-2020)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020

description: 1 fichier (8 pages)
description: Autre destinataire : Valentin Bardawil
Comment on "Classical interventions in quantum systems II. Relativistic invariance"
Creators: name: Nikolic, H.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent paper [Phys. Rev. A 61, 022117 (2000)], quant-ph/9906034, A. Peres argued that quantum mechanics is consistent with special relativity by proposing that the operators that describe time evolution do not need to transform covariantly, although the measurable quantities need to transform covariantly. We discuss the weaknesses of this proposal.
description: 4 pages, to appear in Phys. Rev. A
title: Statistical hedging with neural networks
Creators: name: Wang, Weiguan
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2021

description: This thesis investigates the problem of statistical hedging with artificial neural networks (ANNs). The statistical hedging is a data-driven approach that derives hedging strategy from data and hence does not rely on making assumptions of the underlying asset. Consider an investor who sells an option and wishes to hedge it with some amount of underlying asset. ANNs can be used to determine this number by minimising the discrete hedging error. In the first chapter, we provide a comprehensive literature review of papers on the topic of using ANNs for option pricing and hedging, as well as other related ones. Based on our research experience and summary of papers, we provide several advices that we believe are critical in using ANNs for option pricing and hedging problem. In particular, we point out an existing information leakage issue in the literature when preparing data. This review is invaluable for future researchers who are wish to work in this topic. In the second chapter, we consider the hedging problem in the single period case. The ANN is designed to output a hedging ratio directly, instead of first learning to prices. The experiments are taken on simulated Black-Scholes (BS), Heston, end-of-day S&P 500, and tick Euro Stoxx 50 datasets. The results show the ANN can significantly outperform the BS benchmark, but is only comparable to linear regressions on sensitivities. Hence, we illustrate that the edge of the two statistical hedging methods arises mainly from the existence of the leverage effect. Moreover, the information leakage found in the literature is reproduced. It’s shown that a wrong in- and out-of-sample split can overestimate the performance of statistical hedging methods. This leakage can be further exploited by tagging independent variables. Building on the previous chapter, sensitivity analysis are given in the third chapter. They concern data cleaning on the two historical datasets, different simulation parameters of the two simulated datasets, and data preparations. In particular, we show that the statistical hedging methods can also exploit drift and convexity apart from the leverage effect. In the last chapter, our model is extended to multiple periods on the Black-Scholes data. The replicating portfolio is rebalanced with a fixed frequency over the option’s life. We show again the ANN and linear regression methods outperform the BS benchmark, and their performance are comparable.
Strange star candidates
Creators: name: Bombaci, I.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this talk we discuss possible signatures for the existence of strange quark matter stars (strange stars).
description: Invited talk at the conference "Compacta stars in the QCD phase diagrams", Copenhagen (Denmark) 15-18 Aug. 2001
POSSIBILITIES OF SOYBEАN HARVESTING RATIONALIZATION AT FAMILY HOUSEHOLDS
Creators: name: Bosnjak, Danica
name: Teodinov, Danilo
name: Bosnjak, Danica
name: Teodinov, Danilo
Publisher: name: Unknown
Year: 2009
Subjects: subject: Consumer/Household Economics
subject: Crop Production/Industries
subject: Production Economics
subject: harvest of soybean
subject: combines
subject: family farms
subject: working time
subject: rationalization

description: Operation time during the harvest of soybean at farmer’s holdings has been analyzed by working operations and presented in this paper. Modern combines gain more utilization through working (Krv = 0,55) and production time (Kpv = 0.70) and achieve 3.7 times more effeciency. Proportion of effective time during the harvest of soybean (55,11% - JD 1450 CWS and 48,52% - Zmaj 141) within working day is small and not enough. Analyses of time have shown that there are possibilities for rationalization the process of harvesting soybean. Possibilities for rationalization lay down in resolving of organizational failures, making an optimal combining plan (schedule), and contemporary combine’s usage.
Locality and Structure Regularized Low Rank Representation for Hyperspectral Image Classification
Creators: name: Wang, Qi
name: He, Xiange
name: Li, Xuelong
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Hyperspectral image (HSI) classification, which aims to assign an accurate label for hyperspectral pixels, has drawn great interest in recent years. Although low rank representation (LRR) has been used to classify HSI, its ability to segment each class from the whole HSI data has not been exploited fully yet. LRR has a good capacity to capture the underlying lowdimensional subspaces embedded in original data. However, there are still two drawbacks for LRR. First, LRR does not consider the local geometric structure within data, which makes the local correlation among neighboring data easily ignored. Second, the representation obtained by solving LRR is not discriminative enough to separate different data. In this paper, a novel locality and structure regularized low rank representation (LSLRR) model is proposed for HSI classification. To overcome the above limitations, we present locality constraint criterion (LCC) and structure preserving strategy (SPS) to improve the classical LRR. Specifically, we introduce a new distance metric, which combines both spatial and spectral features, to explore the local similarity of pixels. Thus, the global and local structures of HSI data can be exploited sufficiently. Besides, we propose a structure constraint to make the representation have a near block-diagonal structure. This helps to determine the final classification labels directly. Extensive experiments have been conducted on three popular HSI datasets. And the experimental results demonstrate that the proposed LSLRR outperforms other state-of-the-art methods.
description: 14 pages, 7 figures, TGRS2019
Testing error distribution by kernelized Stein discrepancy in multivariate time series models
Creators: name: Luo, Donghang
name: Zhu, Ke
name: Gong, Huan
name: Li, Dong
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Knowing the error distribution is important in many multivariate time series applications. To alleviate the risk of error distribution mis-specification, testing methodologies are needed to detect whether the chosen error distribution is correct. However, the majority of existing tests only deal with the multivariate normal distribution for some special multivariate time series models, and thus cannot be used for testing the often observed heavy-tailed and skewed error distributions in applications. In this paper, we construct a new consistent test for general multivariate time series models, based on the kernelized Stein discrepancy. To account for the estimation uncertainty and unobserved initial values, a bootstrap method is provided to calculate the critical values. Our new test is easy-to-implement for a large scope of multivariate error distributions, and its importance is illustrated by simulated and real data. As an extension, we also show how to test for the error distribution in copula time series models.
The computation of the Conformal Killing Vectors of an 1+(n-1) decomposable metric
Creators: name: Apostolopoulos, Pantelis S.
name: Tsamparlis, Michael
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A generalisation of a known theorem concerning the computation of the conformal algebra in 1+(n-1) decomposable spaces is presented. It is shown that the general form of Conformal Vector Fields (CVF) is the sum of a gradient CVF and a Killing or Homothetic (n-1)-vector. A simple criterion is established which enables one to check if a 1+(n-1) decomposable spacetime admits proper CVF. As an example, the complete conformal algebra of a Gödel-type spacetime is computed.
description: 10 pages, Latex. Matches version to appear in Tensor N. S
Tanipone aglandula Bolton & Fisher 2012
Creators: name: Bolton, Barry
name: Fisher, Brian L.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Tanipone
Tanipone aglandula

description: Characters of aglandula species group (workers)
1 Tergite of AIII without discernible glandular patches (histological work is necessary to ascertain if the glands remain below the sclerite or are truly lost; see worker comment 22, under diagnosis of genus, above).
 2 Cephalic pilosity is as described for the maculata group above, except that commonly two setae project laterally from below the eye and the sides of the head may have additional short setae present.
3 With mesofemur in dorsal view a single standing seta is present close to the apex on the anterior surface, and another is present on the posterior surface directly opposite to it. Metafemur in the same view has a single seta on the anterior surface only. Appressed short pubescence is present on both femora.
 The single species in this group, aglandula, exhibits a density of pilosity that on the head and abdomen is intermediate between the severely restricted setal pattern characteristic of the maculata group and the much denser, more disorganised pilosity of the hirsuta group. The metatibial gland orifice in aglandula is the most extensively developed of the genus, and it is the only known species of Tanipone that has no visible glandular patches on AIII.
description: Published as part of Bolton, Barry & Fisher, Brian L., 2012, Taxonomy of the cerapachyine ant genera Simopone Forel, Vicinopone gen. n. and Tanipone gen. n. (Hymenoptera: Formicidae) 3283, pp. 1-101 in Zootaxa 3283 (1) on page 80, DOI: 10.11646/zootaxa.3283.1.1, http://zenodo.org/record/5249502
Organic Light-Emitting Diode Beam Shaping: Pixel Design for Variable Angular Emission Profile Control
Creators: name: Fries, Felix
name: Fröbel, Markus
name: Ang, Pen Yiao
name: Lenk, Simone
name: Reineke, Sebastian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Organic light-emitting diodes (OLEDs) are the leading self-emitting pixel technology in current and future small and large area displays. Once integrated with a certain layer architecture into the backplane layout, their emission colour and angular distribution is set by the optical properties of the layered system. In this paper, we demonstrate a pixel design that allows for actively controlled variation of the angular emission profile of the individual vertical pixel. For this, a tandem device is developed that comprises two units optimized for different angular emission pattern. We constrained the system to operate in a narrow emission band to maintain monochromaticity of the individual pixel. We discuss this concept for a red phosphorescence-based OLED stack and give an outlook based on simulations for the other primary display colours green and blue. The tandem unit can be operated with only two electrodes making use of the AC/DC driving concept, where the outer electrodes are in direct connection. In this paper, we will discuss the potential, status, and technology challenges for this concept.
MOESM1 of Ensuring sustainability in plastics use in Africa: consumption, waste generation, and projections
Creators: name: Babayemi, Joshua
name: Nnorom, Innocent
name: Oladele Osibanjo
name: Weber, Roland
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology

description: Additional file 1. Additional tables and figures.
MPEC 2025-D17 : 2024 MF1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Quantum Nonlocality for a Mixed Entangled Coherent State
Creators: name: Wilson, D.
name: Jeong, H.
name: Kim, M. S.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum nonlocality is tested for an entangled coherent state, interacting with a dissipative environment. A pure entangled coherent state violates Bell's inequality regardless of its coherent amplitude. The higher the initial nonlocality, the more rapidly quantum nonlocality is lost. The entangled coherent state can also be investigated in the framework of $2\times2$ Hilbert space. The quantum nonlocality persists longer in $2\times2$ Hilbert space. When it decoheres it is found that the entangled coherent state fails the nonlocality test, which contrasts with the fact that the decohered entangled state is always entangled.
description: 20 pages, 7 figures. To be published in J. Mod. Opt
The Impact of Kyrgyzstan’s Accession to the Eurasian Economic Union (EAEU) on the Structure of Kyrgyz Consumer Demand – A Preliminary Assessment –
Creators: name: Adiiaeva, Chinara
name: Grings, Michael
name: Adiiaeva, Chinara
name: Grings, Michael
Publisher: name: Unknown
Year: 2016
Subjects: International Development
International Relations/Trade
Research Methods/ Statistical Methods

description: The selected paper presented at the IAMO Samarkand Conference
Development of a clinical risk score for incident diabetes: A 10-year prospective cohort study
Creators: name: Oh, Tae Jung
name: Moon, Jae Hoon
name: Choi, Sung Hee
name: Lim, Soo
name: Cho, Young Min
name: Park, Kyong Soo
name: Cho, Nam H.
name: Jang, Hak Chul
Publisher: name: figshare
Year: 2019
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: Supplementary tables
Group Maturity and Agility, Are They Connected? - A Survey Study
Creators: name: Gren, Lucas
name: Torkar, Richard
name: Feldt, Robert
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The focus on psychology has increased within software engineering due to the project management innovation "agile development processes". The agile methods do not explicitly consider group development aspects; they simply assume what is described in group psychology as mature groups. This study was conducted with 45 employees and their twelve managers (N=57) from two SAP customers in the US that were working with agile methods, and the data were collected via an online survey. The selected Agility measurement was correlated to a Group Development measurement and showed significant convergent validity, i.e., a more mature team is also a more agile team. This means that the agile methods probably would benefit from taking group development into account when its practices are being introduced.
Additional file 6 of Multi-omics examination of Q fever fatigue syndrome identifies similarities with chronic fatigue syndrome
Creators: name: Raijmakers, Ruud P. H.
name: Roerink, Megan E.
name: Jansen, Anne F. M.
name: Keijmel, Stephan P.
name: Gacesa, Ranko
name: Li, Yang
name: Joosten, Leo A. B.
name: van der Meer, Jos W. M.
name: Netea, Mihai G.
name: Bleeker-Rovers, Chantal P.
name: Xu, Cheng-Jian
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Physiology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Additional file 6: Table S2. Gut microbiome taxonomic differences when comparing QFS to HC, CFS to HC, and QFS to CFS. Gut microbiome taxonomic differences when comparing (A) QFS (n = 31) to HC (n = 50), (B) CFS (n = 50) to HC (n = 50), and (C) QFS (n = 31) to CFS (n = 50). Results are depicted as Log2FoldChange and significance was attained if adjusted P ≤ 0.05. QFS Q fever fatigue syndrome, HC healthy controls, CFS chronic fatigue syndrome. Statistical significance was attained if adjusted P ≤ 0.05.
First High Contrast Imaging Using a Gaussian Aperture Pupil Mask
Creators: name: Debes, J. H.
name: Ge, J.
name: Chakraborty, A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Placing a pupil mask with a gaussian aperture into the optical train of current telescopes represents a way to attain high contrast imaging that potentially improves contrast by orders of magnitude compared to current techniques. We present here the first observations ever using a gaussian aperture pupil mask (GAPM) on the Penn State near-IR Imager and Spectrograph (PIRIS) at the Mt. Wilson 100$^{\prime\prime}$ telescope. Two nearby stars were observed, $ε$ Eridani and $μ$ Her A. A faint companion was detected around $μ$ Her A, confirming it as a proper motion companion. Furthermore, the observed H and K magnitudes of the companion were used to constrain its nature. No companions or faint structure were observed for $ε$ Eridani. We found that our observations with the GAPM achieved contrast levels similar to our coronographic images, without blocking light from the central star. The mask's performance also nearly reached sensitivities reported for other ground based adaptive optics coronographs and deep HST images, but did not reach theoretically predicted contrast levels. We outline ways that could improve the performance of the GAPM by an order of magnitude or more.
description: 8 pages, 4 figures, accepted by ApJ letters
FOOD ADDITIVES: IMPORTANT PART OF FUNCTIONAL FOOD
Creators: name: Khodjaeva, Umida
name: Hodjayorova, Guzal
name: Khodjaeva, Umida
name: Hodjayorova, Guzal
Publisher: name: Unknown
Year: 2016
Subjects: Food Consumption/Nutrition/Food Safety
Production Economics

description: The selected paper presented at the IAMO Samarkand Conference
Generation of embryonic stem cells derived from the inner cell mass of blastocysts of outbred ICR mice
Creators: name: Han, Na Rae
name: Baek, Song
name: Kim, Hwa-Young
name: Lee, Kwon Young
name: Yun, Jung Im
name: Choi, Jung Hoon
name: Eunsong Lee
name: Choon-Keun Park
name: Lee, Seung Tae
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Evolutionary Biology
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Embryonic stem cells (ESCs) derived from outbred mice which share several genetic characteristics similar to humans have been requested for developing stem cell-based bioengineering techniques directly applicable to humans. Here, we report the generation of ESCs derived from the inner cell mass of blastocysts retrieved from 9-week-old female outbred ICR mice mated with 9-week-old male outbred ICR mice (ICRESCs). Similar to those from 129/Ola mouse blastocysts (E14ESCs), the established ICRESCs showed inherent characteristics of ESCs except for partial and weak protein expression and activity of alkaline phosphatase. Moreover, ICRESCs were not originated from embryonic germ cells or pluripotent cells that may co-exist in outbred ICR strain-derived mouse embryonic fibroblasts (ICRMEFs) used for deriving colonies from inner cell mass of outbred ICR mouse blastocysts. Furthermore, instead of outbred ICRMEFs, hybrid B6CBAF1MEFs as feeder cells could sufficiently support in vitro maintenance of ICRESC self-renewal. Additionally, ICRESC-specific characteristics (self-renewal, pluripotency, and chromosomal normality) were observed in ICRESCs cultured for 40th subpassages (164 days) on B6CBAF1MEFs without any alterations. These results confirmed the successful establishment of ESCs derived from outbred ICR mice, and indicated that self-renewal and pluripotency of the established ICRESCs could be maintained on B6CBAF1MEFs in culture.