cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evaluation of Seed Quality Attributes of Sorghum Germplasm Accessions from Eastern, Coastal and Nyanza Regions, Kenya
Creators: name: Muui, C.W.
name: Muasya, R.M.
name: Nguluu, S.
name: Kambura, A.
name: Muui, C.W.
name: Muasya, R.M.
name: Nguluu, S.
name: Kambura, A.
Publisher: name: Unknown
Year: 2020
Subjects: subject: Crop Production/Industries
subject: attributes
subject: germplasm
subject: seed quality
subject: Sorghum bicolor

description: Sorghum (Sorghum bicolor L.) is an important cereal crop in Kenya. Despite the crops importance, the yields attained by farmers in Eastern, Coastal and Nyanza regions of Kenya remain low. Access to good quality seeds of sorghum is one of the constraints facing the subsistence farmers. Good quality seed is important for increasing yield to attain food security. The aim of this study was to evaluate quality attributes of the seed used by farmers. A total of 108 germplasm accessions were obtained from 76 farmers. The seeds were tested for time and percentage of germination, seed vigour index, shoot and root dry weight. Data collected was subjected to analysis of variance. Means were separated using Fisher’s Least Significance Difference test at p ≤ 0.05. Seed samples of 26 accessions attained germination percentage below stipulated standards by Seeds and Plant Varieties Act CAP 326. Majority of seeds showed longer mean germination time with only nine accessions germinating in less than ten days. Seed vigour index was relatively high in most of the accessions, while biomass accumulation varied from high to very low among accessions. Though most of the seeds attained a high germination percentage, about 92% of seeds showed longer mean germination time. The environmental conditions in the fields, pre and post harvest handling practices impact on the seed quality hence the wide variability in germination percentage, germination time, seed vigour index and dry matter accumulation. Therefore the need to improve quality of seeds used by subsistence farmers by providing extension services on best pre and post harvest handling practices. Increasing production of sorghum in these regions will contribute significantly towards realizing food security. Further analysis could be carried out on genetic and sanitary quality aspects of the seeds planted by farmers in Eastern, Nyanza and Coastal regions.
Quantum Cosmology with Dynamical Vacuum in a Minimal-Length Scenario
Creators: name: Gusson, M. F.
name: Gonçalves, A. Oakes O.
name: Furtado, R. G.
name: Fabris, J. C.
name: Nogueira, J. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we consider effects of the dynamical vacuum in quantum cosmology in presence of a minimum length introduced by the GUP (generalized uncertainty principle) related to the modified commutation relation $[\hat{X},\hat{P}] := \frac{i\hbar}{ 1 - β\hat{P}^2 }$ . We determine the wave function of the Universe $ ψ_{qp}(ξ,t)$, which is solution of the modified Wheeler-DeWitt equation in the representation of the quasi-position space, in the limit where the scale factor of the Universe is small. Although $ψ_{qp}(ξ,t)$ is a physically acceptable state it is not a realizable state of the Universe because $ ψ_{qp}(ξ,t)$ has infinite norm, as in the ordinary case with no minimal length.
description: Accepted in European Physical Journal C (EPJC)
Semileptonic Decay of $Ω_c^0 \to Ξ^- l^+ ν_l$ From Light-Cone Sum Rules
Creators: name: Duan, Hui-Hui
name: Liu, Yong-Lu
name: Huang, Ming-Qiu
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The weak decay process of $Ω_c$ to $Ξ$ is calculated in the method of QCD light-cone sum rule. The decay width of $Ω_c^0 \to Ξ^- l^+ ν_l$ and its decay branching ratio are also calculated with the form factors from this work's calculation. To the twist-6 distribution amplitudes, the form factors $f_1=0.66\pm0.02, f_2=-0.76\pm0.03, g_1=0.06\pm0.01$ and $g_2=-0.44\pm0.01$ are given at zero recoil point. The result of the semileptonic decay width of $Ω_c^0 \to Ξ^-l^+ν_l$ is $Γ=(7.51\pm0.36)\times10^{-15}~{\rm{GeV}}$ , and the prediction of the decay branching ratio $Br(Ω_c^0\toΞ^-l^+ν_l)=(3.06\pm0.15)\times10^{-3}$. These results fit well with other works, and the decay width and branching ratio are improved. This not too small branching ratio gives a good direction to explore this decay channel in the future experiments.
description: 10 pages, 7 figures
LINEAR PROGRAMMING AS A TOOL FOR AGRICULTURAL SECTOR ANALYSIS
Creators: name: Walker, Neal
name: Monypenny, Richard
name: Walker, Neal
name: Monypenny, Richard
Publisher: name: Unknown
Year: 1976
Subjects: Research Methods/ Statistical Methods

description: As sector programming models have increased in number, they have also increased, individually, in size and complexity. This increased sophistication has presented to researchers well-defined and difficult choices, the resolution of which usually involves compromise of either model generality or theoretical rigor. This paper discusses problems typical of those encountered in construction of large-scale programming models, and presents an overview of the goals of such models and the uses to which they have been applied.
Ferromagnetism and Kondo Insulator Behavior in the Disordered Periodic Anderson Model
Creators: name: Yu, Unjong
name: Byczuk, Krzysztof
name: Vollhardt, Dieter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The effect of binary alloy disorder on the ferromagnetic phases of f-electron materials is studied within the periodic Anderson model. We find that disorder in the conduction band can drastically enhance the Curie temperature due to an increase of the local f-moment. The effect may be explained qualitatively and even quantitatively by a simple theoretical ansatz. The emergence of an alloy Kondo insulator at non-integer filling is also pointed out.
description: 5 pages, 3 figures
Spectroscopy of Eclipsing Compact Hierarchical Triples I
Creators: name: Moharana, Ayush
name: Hełminiak, K. G.
name: Marcadon, F.
name: Pawar, T.
name: Pawar, G.
name: Konacki, M.
name: Jordán, A.
name: Brahm, R.
name: Espinoza, N.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Eclipsing Compact Hierarchical Triples (ECHTs) are systems with the tertiary star orbiting an eclipsing binary (EB) in an orbit of fewer than 1000 days. In a CHT, all three stars exist in a space less than 5 AU in separation. A low-mass CHT is an interesting case to understand multiple star and planet formation at such small scales. In this study, we combine spectroscopy and photometry to estimate the orbital, stellar and atmospheric parameters of stars in a sample of CHTs. Using the complete set of parameters we aim to constrain the metallicity and age of the systems. We use time-series spectroscopy to obtain radial velocities (RVs) and disentangled spectra. Using RV modelling, EB light curve modelling, and spectral analysis, we estimated the metallicities and temperatures. Using isochrone fitting, we constrain the ages of the system. We then combine observations of masses, outer eccentricities (e_2), orbital periods and age estimates of the systems from the literature. We compare the distributions of e_2, and tertiary mass ratio, q_3 = M_3/(M_1+M_2), for three different metallicity ranges and two ranges of age. We estimate masses, radii, temperatures, metallicities and age of 12 stars in 4 CHTs. The CHT CD-32 6459 shows signs of von Zeipel-Lidov-Kozai oscillations while CD-62 1257 can evolve to form a triple common envelope. The rest of the CHTs are old and have an M-dwarf tertiary. We find that the q_3 distribution for CHTs with sub-solar metallicity has a uniform distribution but the systems with solar and above-solar metallicity peak between 0.5 and 1. When dividing them according to their ages, we found the q_3 of old systems around 0.5. The eccentricity e_2 favours a value around 0.3 irrespective of metallicity or age. The distributions are biased by the lack of observations and observing methods and therefore call for more observations of low-mass CHT.
description: 16 pages, 15 figures. Accepted for publication in Astronomy & Astrophysics
Family ties: abundances in Terzan 7, a Sgr dSph globular cluster
Creators: name: Sbordone, L.
name: Bonifacio, P.
name: Marconi, G.
name: Buonanno, R.
name: Zaggia, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the chemical composition of 5 giant stars in the globular cluster Terzan 7 associated with the Sagittarius dwarf spheroidal galaxy (Sgr dSph), based on high resolution UVES-VLT spectra. We confirm the metallicity found by previous high resolution investigations: [Fe/H] ~ -0.6. We also show that this cluster displays the same low alpha-element to iron ratio found in Sgr dSph field stars of similar metallicity, as well as the same low Ni/Fe ratio. These chemical signatures are characteristic of the Sgr dSph system, and appear to be shared both by the globular cluster Pal 12, which was most likely stripped from Sgr by tidal interaction, and by Pal 5, which may also have belonged in the past to the Sgr dSph system. Intriguingly even globular cluster Ruprecht 106, although not associated to Sgr, displays similar characteristics.
description: 9 pages, A&A accepted
Frog story
Creators: name: Lekka, Mina
name: Ding, Lydia
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: nkr

description: One .wav audio file and one .eaf ELAN transcription file for a frog story in Nukuoro, prompted using visual stimuli from the picture book "Frog, Where Are You?" by Mercer Mayer.
DATA HANDLING RESTRICTIONS ON LARGE SCALE AGRICULTURAL MODELS
Creators: name: Sluczanowski, Philip W.R.
name: Sluczanowski, Philip W.R.
Publisher: name: Unknown
Year: 1976
Subjects: Research Methods/ Statistical Methods

description: In a large-scale agricultural model a sizeable amount of low level data undergoes several stages of processing. In designing a model, uncertainty and complexity will restrict the generality of computer-implemented stages and much of the processing will be manual. The resulting model is likely to be inflexible to changes or else require as long again to modify and rerun as to design another model in order to evaluate another policy. By recognizing the necessary constraints imposed by mass data handling, the proportion of time spent on data problems could be reduced. Emphasis should be placed on defining beforehand as explicity as possible an acceptable methodology and what the specific uses of the model will be.
Most dwarf spheroidal galaxies surrounding the Milky Way cannot be dark-matter dominated satellites
Creators: name: Hammer, Francois
name: Yang, Yanbin
name: Arenou, Frederic
name: Li, Hefan
name: Wang, Jianling
name: Bonifacio, Piercarlo
name: Babusiaux, Carine
name: Jiao, Yongjun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Milky Way dwarf spheroidal galaxies are the tiniest observed galaxies and are currently associated with the largest fractions of dark matter, which is revealed by their too large velocity dispersions. However, most of them are found near their orbital pericenters. This leads to a very low probability, P = 2 $10^{-7}$, that they could be long-lived satellites such as sub-halos predicted by cosmological simulations. Their proximity to their pericenters suggests instead that they are affected by tidal shocks, which provide sufficient kinematic energy to explain their high velocity dispersions. Dependency of the dark matter properties to their distance to the Milky Way appears to favor tidally shocked and out of equilibrium dSphs instead of self-equilibrium systems dominated by dark matter.
description: 7 pages, 2 Figures, Printed at Proceedings of the 3rd World Summit on Exploring the Dark Side of the Universe (EDSU2020): March 9-13, 2020, Guadeloupe Islands, Eds. A. Novikov, P. Petroff and C. Royon, University of Kansas Libraries P229. An explanatory video based on hydrodynamical, N-body simulations optimizing the dynamics of stars can be found at: https://www.youtube.com/watch?v=m55iBXISYyE
Geospatial Visualisation Techniques for Transmission System Needs Identification
Creators: name: Daly, Pádraig
name: Cuffe, Paul
Publisher: name: figshare
Year: 2021
Subjects: subject: 90607 Power and Energy Systems Engineering (excl. Renewable Power)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: CIGRE Session 48, 2020. C1-309.
Montonic convergent optimal control theory to modulate bandwidth limited laser pulses in linear and non-linear optical processes
Creators: name: Gollub, Caroline
name: Kowalewski, Markus
name: de Vivie-Riedle, Regina
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a modified optimal control scheme based on the Krotov method, which allows for strict limitations on the spectrum of the optimized laser fields, without losing monotonic convergence of the algorithm. The method guarantees a close link to learning loop control experiments and is demonstrated for the challenging control of non-resonant Raman transitions, which are used to implement a set of global quantum gates for molecular vibrational qubits.
description: 4 pages, 3 figures
Stability criteria of nonlinear generalized proportional fractional delayed systems
Creators: name: Zitane, Hanaa
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 26A33, 34A08, 34A34, 34D20, 34K20

description: This work deals with the finite time stability of generalized proportional fractional systems with time delay. First, based on the generalized proportional Grönwall inequality, we derive an explicit criterion that enables the system trajectories to stay within a priori given sets during a pre-specified time interval, in terms of the Mittag-Leffler function. Then, we investigate the finite time stability of nonlinear nonhomogeneous delayed systems by means of an approach based on Hölder's and Jensen's inequalities. Numerical applications are presented to illustrate the validity and feasibility of the developed results.
description: This is a preprint version of a paper whose final form is published in 'Mathematical Analysis: Theory and Applications'
Relaxation and freezing of dielectric response in relaxor Pb(Mg1/3Nb2/3)O3 crystal
Creators: name: Bokov, A. A.
name: Ye, Z. -G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Dielectric investigations of the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 crystal were performed in the frequency domain at 10^(-4) 10^5 Hz. In the ergodic relaxor phase two overlapping relaxation processes obeying the Kohlrausch-Williams-Watts law, exp[-(t/tau)^beta], and the Curievon Schweidler law, t^(-n), respectively, were found and parameterized. The values of beta, n and 1/tau tend to zero at 211 K following the Vogel-Fulcher law, pointing to the glassy freezing of the dipole dynamics related to both relaxation processes.
description: PDF file, 7 pages, 4 figures collected on pp. 4-6
Low-mass low-metallicity AGB stars as an efficient i-process site explaining CEMP-rs stars
Creators: name: Karinkuzhi, D.
name: Van Eck, S.
name: Goriely, S.
name: Siess, L.
name: Jorissen, A.
name: Merle, T.
name: Escorza, A.
name: Masseron, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Among Carbon-Enhanced Metal-Poor (CEMP) stars, some are found to be enriched in s-process elements (CEMP-s), in r-process elements (CEMP-r) or in both s- and r-process elements (CEMP-rs). The origin of the abundance differences between CEMP-s and CEMP-rs stars is presently unknown. It has been claimed that the i-process, whose site still remains to be identified, could better reproduce CEMP-rs abundances than the s-process. We analyze high-resolution spectra of 25 metal-poor stars, observed with the high-resolution HERMES spectrograph mounted on the Mercator telescope, La Palma, or with the UVES/VLT and HIRES/KECK spectrographs. We propose a new, robust classification method for CEMP-s and CEMP-rs stars using eight heavy element abundances. The abundance profiles of CEMP-s and CEMP-rs stars are derived and there appears to be an abundance continuum between the two stellar classes. CEMP-rs stars present most of the characteristics of extrinsic stars such as CEMP-s, CH, Barium and extrinsic S stars, with an even larger binarity rate among CEMP-rs stars than among CEMP-s stars. Stellar evolutionary tracks of an enhanced carbon composition (consistent with our abundance determinations) are necessary to explain the position of CEMP-s and CEMP-rs stars in the HR diagram using Gaia DR2 parallaxes; they are found to lie mostly on the RGB. CEMP-rs stars can be explained as being polluted by a low-mass, low-metallicity TP-AGB companion experiencing i-process nucleosynthesis after proton ingestion during its first convective thermal pulses. The global fitting of our i-process models to CEMP-rs stars is as good as the one of our s-process models to CEMP-s stars. As such, CEMP-rs stars could be renamed as CEMP-sr stars, since they represent a particular manifestation of the s-process at low-metallicities. For these objects a call for an exotic i-process site may not necessarily be required anymore.
description: 35 pages, 26 figures, Accepted for publication in A&A, Final version
Limit structure of Future Null Infinity tangent -topology of the event horizon and gravitational wave tail-
Creators: name: Tomizawa, Shinya
name: Siino, Masaru
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigated the relation between the behavior of gravitational wave at late time and the limit structure of future null infinity tangent which will determine the topology of the event horizon far in the future. In the present article, we mainly consider a spacetime with two black holes. Although in most of cases, the black holes coalesce and its event horizon is topologically a single sphere far in the future, there are several possibilities that the black holes never coalesce and such exact solutions as examples. In our formulation, the tangent vector of future null infinity is, under conformal embedding, related to the number of black holes far in the future through the Poincaré-Hopf's theorem. Under the conformal embedding, the topology of event horizon far in the future will be affected by the geometrical structure of the future null infinity. In this article, we related the behavior of Weyl curvature to this limit behavior of the generator vector of the future null infinity. We show if Weyl curvature decays sufficiently slowly at late time in the neighborhood of future null infinity, two black holes never coalesce.
description: 20 pages, 3 figures, accepted for publication in Class. Quant. Grav
Elicitation to transcribe stories and interview
Creators: name: Rudolph, Johnny (Soni)
name: Drummond, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: nkr

description: One .wav audio file for an elicitation to transcribe stories about fishing lures, tibidibi game, and frying breadfruit and an interview with Sigi. Corresponds to pages 233-234 in Notebook 1.
Dissipative Effects in the Worldline Approach to Black Hole Dynamics
Creators: name: Goldberger, Walter D.
name: Rothstein, Ira Z.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive a long wavelength effective point particle description of four-dimensional Schwarzschild black holes. In this effective theory, absorptive effects are incorporated by introducing degrees of freedom localized on the worldline that mimic the interaction between the horizon and bulk fields. The correlation functions of composite operators in this worldline theory can be obtained by standard matching calculations. For example, we obtain the low frequency two-point function of multipole worldline operators by relating them to the long wavelength graviton black hole absorptive cross section. The effective theory is then used to predict the leading effects of absorption in several astrophysically motivated examples, including the dynamics of non-relativistic black hole binary inspirals and the motion of a small black hole in an arbitrary background geometry. Our results can be written compactly in terms of absorption cross sections, and can be easily applied to the dissipative dynamics of any compact object, e.g. neutron stars. The relation of our methodology to that developed in the context of the AdS/CFT correspondence is discussed.
description: 19 pages 2 figures
EU market access for Mediterranean fruit and vegetables: A gravity model assessment
Creators: name: Emlinger, Charlotte
name: Lozza, Emmanuelle Chevassus
name: Jacquet, Florence
name: Emlinger, Charlotte
name: Lozza, Emmanuelle Chevassus
name: Jacquet, Florence
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: Marketing
subject: FOS: Economics and business
subject: Fruit and Vegetables
subject: EU-Med agreement
subject: gravity models
subject: transport cost
subject: tariffs

description: Since 1995, a liberalization process - the so- called Barcelona Process - has begun in the Mediterranean area. It aims at establishing a free trade area for 2010 in the Mediterranean Basin. For the moment the full liberalization concerns industrial product s trade whereas agriculture remains sensitive. Among agricultural product s, the fruit and vegetables (F&V) sector is essential for Mediterranean countries and the EU is their first trading partner. In this context, two questions arise: Firstly, to what extent protection influence trade for the med countries, compared to the other countries? Secondly, what would be the impacts of a greater liberalization on F&V trade between the EU and Mediterranean Countries? Our model, based on the new development s of gravity equation focuses on the difficulties faced by the Mediterranean countries to enter on the EU market, compared to the other EU partners, considering the relative impact of the different trade costs. It is estimated at the product level, in a sector with a huge specificity: some product s may be very perishable and thus particularly time sensitive. The Mediterranean basin appears as a highly heterogeneous country bloc. Beside the actual level of preferences allowed by the EU, two main elements vary according to the exporting country : its tariff sensitivity and its "non- tariff" trade resistance. Thus, with respect to the Euromed liberalization, the higher the tariff sensitivity the higher the impact of liberalization on trade and this impact can be limited by a high trade resistance (NTB, logistic constraints...).
Capturing the complexity of gamification elements: a holistic approach for analysing existing and deriving novel gamification designs
Creators: name: Schöbel, Sofia Marlena
name: Janson, Andreas
name: Söllner, Matthias
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Marine Biology
subject: Science Policy

description: Gamification is a well-known approach that refers to the use of elements to increase the motivation of information systems users. A remaining challenge in gamification is that no shared understanding of the meaning and classification of gamification elements currently exists. This impedes guidance concerning analysis and development of gamification concepts, and often results in non-effective gamification designs. The goal of our research is to consolidate current gamification research and rigorously develop a taxonomy, as well as to demonstrate how a systematic classification of gamification elements can provide guidance for the gamification of information systems and improve understanding of existing gamification concepts. To achieve our goal, we develop a taxonomic classification of gamification elements before evaluating this taxonomy using expert interviews. Furthermore, we provide evidence as to the taxonomy’s feasibility using two practical cases: First, we show how our taxonomy helps to analyse existing gamification concepts; second, we show how our taxonomy can be used for guiding the gamification of information systems. We enrich theory by introducing a novel taxonomy to better explain the characteristics of gamification elements, which will be valuable for both gamification analysis and design. This paper will help guide practitioners to select and combine gamification elements for their gamification concepts.
From Elements to Structures: An Agenda for Organisational Gamification
Creators: name: Khan, Ali
name: Farzam Boroomand
name: Webster, Jane
name: Xerxes Minocher
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Gamification is gaining popularity in organisational settings, yet it is unclear if investments in organisational gamification will pay off, given that reports of mixed results are commonplace in the literature. It is important that potential factors behind any mixed results from the initial wave of gamification research be identified and addressed before organisational scholars and practitioners start investing valuable resources into large-scale gamification projects. In this Issues and Opinions paper, we identify and discuss several reasons that may be contributing to the problem of mixed results. We ground our arguments in an umbrella review of the gamification literature. In line with the theme of “Putting more than mere ‘Fun and Games’ into Systems” for this special issue, we propose a framework grounded in Adaptive Structuration Theory and present a set of research questions that can help guide future organisational gamification research. Further, based on the strengths and limitations of our work, we identify several additional avenues to stimulate future research and produce fresh practical insights.
Populating 3D Scenes by Learning Human-Scene Interaction
Creators: name: Hassan, Mohamed
name: Ghosh, Partha
name: Tesch, Joachim
name: Tzionas, Dimitrios
name: Black, Michael J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Humans live within a 3D space and constantly interact with it to perform tasks. Such interactions involve physical contact between surfaces that is semantically meaningful. Our goal is to learn how humans interact with scenes and leverage this to enable virtual characters to do the same. To that end, we introduce a novel Human-Scene Interaction (HSI) model that encodes proximal relationships, called POSA for "Pose with prOximitieS and contActs". The representation of interaction is body-centric, which enables it to generalize to new scenes. Specifically, POSA augments the SMPL-X parametric human body model such that, for every mesh vertex, it encodes (a) the contact probability with the scene surface and (b) the corresponding semantic scene label. We learn POSA with a VAE conditioned on the SMPL-X vertices, and train on the PROX dataset, which contains SMPL-X meshes of people interacting with 3D scenes, and the corresponding scene semantics from the PROX-E dataset. We demonstrate the value of POSA with two applications. First, we automatically place 3D scans of people in scenes. We use a SMPL-X model fit to the scan as a proxy and then find its most likely placement in 3D. POSA provides an effective representation to search for "affordances" in the scene that match the likely contact relationships for that pose. We perform a perceptual study that shows significant improvement over the state of the art on this task. Second, we show that POSA's learned representation of body-scene interaction supports monocular human pose estimation that is consistent with a 3D scene, improving on the state of the art. Our model and code are available for research purposes at https://posa.is.tue.mpg.de.
The countable Telescope Conjecture for module categories
Creators: name: Saroch, Jan
name: Stovicek, Jan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 16E30, 18E30 (Primary); 03C60, 16D90, 18G25, 20K40 (Secondary)

description: By the Telescope Conjecture for Module Categories, we mean the following claim: "Let R be any ring and (A, B) be a hereditary cotorsion pair in Mod-R with A and B closed under direct limits. Then (A, B) is of finite type." We prove a modification of this conjecture with the word 'finite' replaced by 'countable'. We show that a hereditary cotorsion pair (A, B) of modules over an arbitrary ring R is generated by a set of strongly countably presented modules provided that B is closed under unions of well-ordered chains. We also characterize the modules in B and the countably presented modules in A in terms of morphisms between finitely presented modules, and show that (A, B) is cogenerated by a single pure-injective module provided that A is closed under direct limits. Then we move our attention to strong analogies between cotorsion pairs in module categories and localizing pairs in compactly generated triangulated categories.
description: 31 pages; minor changes, typos corrected, references added
Design analysis of a fuel injector prototype with the aid of finite element models
Creators: name: Post, Adrian John
Publisher: name: University of British Columbia
Year: 2009

description: A fuel injector utilising High Pressure Direct injection technology is being developed by Westport Innovations Ltd. It is designed to allow heavy-duty diesel engines to run primarily on natural gas and yet still retain the inherent advantages of diesel engines. The operation of the injector is fairly complex and the cost of prototyping is high. Fatigue cracks were detected in injector components subjected to engine cycle testing. To better understand the stresses in the injector and decrease the stress levels, several finite element models of the different components are created for analysis. Using submodelling techniques, the fine details of the design are examined at important sections of the injector. Alternative design choices are examined by creating alternative submodels with different hole intersection configurations and comparing the results to the original submodel. The results of this analysis indicate that more significant changes than altering the hole configuration are necessary if the stress levels are to be decreased. The diesel and gas needle components are studied in a separate analysis in which contact elements are utilised to model the interaction with each other and the injector tip. The sealing surface at the contact between the components is predicted to be smaller than was previously assumed. Decreasing the relative angle between the contact surfaces results in an increase in the sealing surface. The significance of thermal stresses as a cause of the fatigue failures is shown to be minor. A transient heat transfer analysis of the injector tip is performed. This predicts very small thermal variations once steady state had been reached. The end of the tip is a critical area as the injection holes act as a stress concentration and the repercussions of failure of this section are great as this section of the injector is exposed to the engine cylinder. Different design alternatives for this particular section are modelled and compared to assess the relative merits of each configuration. Finally, an investigation is conducted into the effect of pressurising the spring bore of the injector. Under the current conditions of the model, the deformation caused by this pressurisation will be unacceptable as there will no longer be sufficient clearance for the plungers in the cage and check block components of the injector.
Market dynamics and policy reforms in the EU olive oil industry: An exploratory assessment
Creators: name: Mili, Samir
name: Mili, Samir
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agribusiness
subject: Globalisation
subject: market dynamics
subject: business strategies
subject: agricultural and trade policy reform
subject: EU olive oil
subject: SWOT analysis

description: Available information indicates that the future competitive scenario for EU olive oil will be shaped by the market dynamics and business strategies, and the ongoing agricultural and trade policy reforms (CAP reform, WTO Doha Round negotiations, regional and bilateral trade agreements). Based on this premise, the purpose of this contribution is to present an overall evaluation of the market change and policy reform processes affecting the EU olive oil sector, pointing out the main strengths, weaknesses, opportunities and threats (SWOT) that can be associated to their present and expected evolution. The analysis is performed with a systemic approach to market and policy changes, under the general hypothesis that these are governed by a series of economic and regulatory factors on which there is little empirical evidence or which still are subject of public debate whose outcomes are not clear. It is also assumed that while some of these factors act on a global level, others may vary across countries and even within countries amongst different players, which means that there is a wide spectrum of possible strategies and courses of action for the future. The information used is gathered through a combination of secondary sources and primary data from consultations with a representative group of key informants in olive oil policy and markets.
Generalized spin squeezing inequalities in $N$ qubit systems: theory and experiment
Creators: name: Korbicz, J. K.
name: Gühne, O.
name: Lewenstein, M.
name: Haeffner, H.
name: Roos, C. F.
name: Blatt, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present detailed derivations, various improvements and application to concrete experimental data of spin squeezing inequalities formulated recently by some of us [Phys. Rev. Lett. {\bf 95}, 120502 (2005)]. These inequalities generalize the concept of the spin squeezing parameter, and provide necessary and sufficient conditions for genuine 2-, or 3- qubit entanglement for symmetric states, and sufficient entanglement condition for general $N$-qubit states. We apply our method to theoretical study of Dicke states, and, in particular, to $W$-states of $N$ qubits. Then, we analyze the recently experimentally generated 7- and 8-ion $W$-states [Nature {\bf 438}, 643 (2005)]. We also present some novel details concerning this experiment. Finally, we improve criteria for detection of genuine tripartite entanglement based on entanglement witnesses.
description: Final version
The economic regulation of quality in the Italian VQPRD sector: which perspectives?
Creators: name: Malorgio, Giulio
name: Grazia, Cristina
name: Malorgio, Giulio
name: Grazia, Cristina
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agribusiness
subject: Appellation of Origin
subject: collective reputation
subject: economic regulation of supply
subject: sectorial organizations

description: The Appellation of Origin system is aimed at reducing consumer's information costs, assuring a minimum quality standard and wine typicity, as well as maintaining a diversified supply in order to satisfy consumer s tastes heterogeneity. The effectiveness of the system is menaced by quantity and quality uncertainty, free riding phenomena, vertical relationships complexity and hold- up risks. The long term risk of the drop of the collective reputation of the Appellation justifies the economic regulation of the supply by the sectorial Organizations. Thus, it is necessary to evaluate ther role in the construction of the competitive advantage of the quality wine system. Then, the question that we address in this paper is that of the effectiveness of the supply regulation of quantity and quality in the Italian system of Appellation of Origin. We analyze the current context of the Italian Appellation of Origin Chianti Classico and the mechanisms of the supply economic regulation. At first, we describe the structural and commercial characteristics of the Appellation, the vertical relationships among the agents, the trend of the most important economic indicators of the Appellation. Then, we provide an analysis of the current mechanisms of the economic regulation of supply, from the specific production requirement s to the role of the sectorial organisation in the Appellation quality strategy. Finally, we point out the problems and the possible evolutions of the Appellation of Origin's system, in the context of the Reform of the CMO of wine.
Agricultural productivity growth in the Mediterranean and tests of convergence among countries
Creators: name: Galanopoulos, Konstantinos
name: Lindberg, Emma
name: Surry, Yves R.
name: Mattas, Konstadinos
name: Galanopoulos, Konstantinos
name: Lindberg, Emma
name: Surry, Yves R.
name: Mattas, Konstadinos
Publisher: name: Unknown
Year: 2006
Subjects: subject: Productivity Analysis
subject: Productivity growth
subject: sequential Malmquist TFP
subject: convergence.

description: This paper measures agricultural productivity among a set of thirteen Mediterranean countries which includes two EU- 15 countries (Greece and Spain), another two EU- 25 (Cyprus and Malta) one country under accession negotiations (Turkey) and eight Middle East and North Africa (MENA) countries (Algeria, Egypt, Israel, Jordan, Libya, Morocco, Syria and Tunisia) from 1961 to 2002. The objective of the paper is twofold: Firstly, to analyse agricultural productivity growth in the Mediterranean countries by means of the sequential Malmquist Total Factor Productivity (TFP) index and secondly, to investigate whether this measure is converging among these countries. In terms of the first objective, TFP indices are decomposed into efficiency changes and technical changes, in an attempt to identify the best - practise countries and the overall effect of technological improvements. In terms of the second, both cross- section and time series tests of convergence are applied. The former include the conventional β- and σ- convergence tests, while for the latter, a new method proposed by Nahar and Inder (2002) that allows for country - specific estimates is used. Neither test finds evidence for unconditional convergence, but two distinctive periods, one prior and one after 1980 are recognized. The time series approach identifies four countries to be converging to the mean and another two to be diverging.
Meson Supercurrent State in High Density QCD
Creators: name: Schaefer, Thomas
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the effect of a non-zero strange quark mass on the color-flavor-locked (CFL) phase of high density quark matter. We have previously shown that for a strange quark mass $m_s\sim m_u^{1/3}Δ^{2/3}$ the CFL state becomes unstable toward the formation of a neutral kaon condensate. Recently, several authors discovered that for $m_s\sim (2Δp_F)^{1/2}$ the CFL state contains gapless fermions, and that the gapless modes lead to an instability in current-current correlation functions. Using an effective theory of the CFL state we demonstrate that this instability is resolved by the formation of an inhomogeneous meson condensate, analogous to Migdal's p-wave pion condensate. This state has a non-zero meson current which is canceled by a backflow of gapless fermions.
description: 4 pages, one figure, revised version, to appear in PRL (title changed in journal)
Developing the food supply chain in Armenia
Creators: name: Engels, Jeffrey E.
name: Sardaryan, Gagik
name: Engels, Jeffrey E.
name: Sardaryan, Gagik
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agribusiness
subject: Armenian Agriculture
subject: Integrated Market Approach
subject: Dairy Industry
subject: Food Supply Chain
subject: Distribution Channels.

description: The collapse of Armenia's planned economy resulted in the breakup of all Soviet vertically and horizontally established marketing arrangements in the agricultural sector. A decade later, distribution channels continue to be underdeveloped and are primarily integrated with processors which increases transaction costs and decreases efficiency. Due to the marketing, technical and financial support initiated by the USDA Marketing Assistance Project (1993- 2005) and continued by its Armenian legacy institution, the Center for Agribusiness and Rural Development (CARD), many small and medium enterprises (SME's) are increasingly active in the development of domestic and export food supply chains. Considering that Armenia's largest agricultural sector is the dairy industry, this paper explores MAP- CARD's integrated market approach to the vertical integration of the Armenian Dairy Industry and analyzes key problems and how these were resolved or improved to provide SME's greater market access.
Effects of structural and trait competitiveness stimulated by points and leaderboards on user engagement and performance growth: A natural experiment with gamification in an informal learning environment
Creators: name: Amo, Laura
name: Ruochen Liao
name: Kishore, Rajiv
name: Hejamadi R. Rao
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Rooted in theories of competitiveness and social comparison, we model the effects of users’ structural and trait competitiveness on their engagement and performance growth in an informal learning environment. We hypothesise that game elements of points and leaderboards stimulate users’ structural competitiveness, which affects users’ engagement and has an inverted-U effect on performance growth. We further hypothesise that these effects are stronger among individuals with higher trait competitiveness. We tested our hypotheses using data from a natural experiment conducted over 300 days on 88,310 unique users who made 215,920 game interactions within the Cyber Detectives exhibit at the Tech Interactive museum in California. Our results are based on two objective measures of trait-competitiveness as both behaviour and outcome (percentile ranking on total time spent and number of badges earned, respectively), multiple objective measures of user engagement (time spent per attempt, number of reattempts, and daily user attempts), and an objective measure of performance growth (points). Results provide overall support to our hypotheses. We contribute to the gamification literature by providing strong causal evidence of points and leaderboards triggering structural and trait competitiveness, which interact to affect both engagement and performance growth in informal learning contexts.
Invariance of Structure in an Aging Colloidal Glass
Creators: name: Cianci, Gianguido C.
name: Courtland, Rachel E.
name: Weeks, Eric R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study concentrated colloidal suspensions, a model system which has a glass transition. The non-equilibrium nature of the glassy state is most clearly highlighted by aging -- the dependence of the system's properties on the time elapsed since vitrification. Fast laser scanning confocal microscopy allows us to image a colloidal glass and track the particles in three dimensions. We analyze the static structure in terms of tetrahedral packing. We find that while the aging of the suspension clearly affects its dynamics, none of the geometrical quantities associated with tetrahedra change with age.
description: Submitted to the proceedings of "The 3rd International Workshop on Complex Systems" in Sendai, Japan
Robbea loti Scharhauser & Saavedra & Pröts & Ot & Geier & Gruber-Vodicka & Polikarpov & Bourenkov & Leisch 2025
Creators: name: Scharhauser, Florian
name: Saavedra, Daniel E. M.
name: Pröts, Philipp
name: Ot, Jörg A.
name: Geier, Benedikt
name: Gruber-Vodicka, Harald R.
name: Polikarpov, Maxim
name: Bourenkov, Gleb
name: Leisch, Nikolaus
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Chromadorea
Desmodorida
Desmodoridae
Robbea
Robbea loti

description: Robbea lotti sp.nov.
ZooBank registration: http://zoobank.org: urn:lsid:zoobank.org: act: 35EFD783-FDBC-4C54-B9B7-DDE69CABA765.
Type location: Bay of Sant’ Andrea, Elba, Italy; subtidal sand in 5–6 m depth. Coordinates: 42.808342 N, 10.141764 E.
Type material: One holotype (NHMW-ZOO-EV-M-5869), three paratypes female (NHMW-ZOO-EV-M-5870/1-3). Collection date: April 2016. Collector: F. Scharhauser.
Etymology: The species is dedicated to Christian Lott, scientist and underwater film-maker at the Hydra Marine Station, Elba.
Description: With the characters of the genus. Measurements see Supporting Information, Table S2.
Shorter (L <7mm) and stouter than the foregoing species (Figures 8 and 9). Cephalic capsule long, extending over>60% of corpus. Corpus about 25% of pharynx length, isthmus short with 47–54%, bulbus large, round, occupying one-fifth of the pharynx. Cuticle finely striated, striae 0.6µm wide. Vulva distinctly cuticularized, but less so than in the forgoing species. Tail conical with a distinctly ‘pipette’-shaped tip. Symbiotic bacteria rods, 3 × 1.5 µm.
description: Published as part of Scharhauser, Florian, Saavedra, Daniel E. M., Pröts, Philipp, Ot, Jörg A., Geier, Benedikt, Gruber-Vodicka, Harald R., Polikarpov, Maxim, Bourenkov, Gleb & Leisch, Nikolaus, 2025, Revision of the genus Robbea (Stilbonematinae: Desmodoridae), worldwide abundant marine nematodes with chromophoric Fe-Br inclusions and the description of a new stilbonematine genus, pp. 1-28 in Zoological Journal of the Linnean Society 203 (1) on page 7, DOI: 10.1093/zoolinnean/zlae005, http://zenodo.org/record/14850743
Desperately seeking the artefacts and the foundations of native theory in gamification research: why information systems researchers can play a legitimate role in this discourse and how they can better contribute
Creators: name: Lowry, Paul Benjamin
name: Petter, Stacie
name: Leimeister, Jan Marco
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: Science Policy

description: Desperately seeking the artefacts and the foundations of native theory in gamification research: why information systems researchers can play a legitimate role in this discourse and how they can better contribute