cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Professionalizing Human Resources Management on the Farm
Creators: name: Owen, Lorne
name: Howard, Wayne
Publisher: name: Unknown
Year: 1997
Subjects: Farm Management

description: Professionalization refers to establishing systematic practices and procedures for managing a farm business. As farms have grown in size, so has the number of fulltime, permanent employees, which has led to professionalizing human resource management (HRM). Projects funded by the Canadian Farm Business Management Council and others have identified the current HRM practices on Canadian farms in order to develop extension and training materials to improve those practices. These extension and training materials include handbooks and materials that show how to establish HRM practices on farms to increase employee sat isfaction and productivity, and hence, the competitiveness of the Canadian agri-food sector. These HRM practices include job analysis, interviewing and selection systems, internal compensation systems, planning and review systems and how to determine and establish HRM policies consistent with the business mission and vision.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
Pre-asymptotic analysis of scattering problem
Creators: name: Korenblit, S. E.
name: Lovtsov, S. V.
name: Sinitskaya, A. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The pre-asymptotic analysis of the multichannel scattering problem for particles with an arbitrary spin and short-range interactions has been presented. The complete operator-valued dependence of the scattered differential flux on the distance to the target exactly consistent with the unitarity condition has been obtained.
description: 8 pages
The two possible values of the chromatic number of a random graph
Creators: name: Achlioptas, Dimitris
name: Naor, Assaf
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60C05

description: Given d \in (0,infty) let k_d be the smallest integer k such that d < 2k\log k. We prove that the chromatic number of a random graph G(n,d/n) is either k_d or k_d+1 almost surely.
description: 17 pages, published version
Masses and Magnetic moments of Triply Heavy Flavour Baryons in Hypercentral Model
Creators: name: Patel, Bhavin
name: Majethiya, Ajay
name: Vinodkumar, P. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Triply heavy flavour baryons are studied using the hyper central description of the three-body system. The confinement potential is assumed as hyper central coulomb plus power potential with power index $p$. The ground state ($J^P={1/2}^+$ and ${3/2}^+$) masses of heavy flavour baryons are computed for different power index, $ p$ starting from 0.5 to 2.0. The predicted masses are found to attain a saturated value with respect to variation in $p$ beyond the power index $p>1.0$. Using the spin-flavour structure of the constituting quarks and by defining effective mass of the confined quarks within the baryons, the magnetic moments are computed with no additional free parameters.
description: 12 Pages, 1 Figure
Effects of Gender Differences in Farm Resources Ownerships on Crop Productivity of Smallholder Farmers in Africa: A Case Study
Creators: name: Panin, A.
Publisher: name: Unknown
Year: 1997
Subjects: Labor and Human Capital
Crop Production/Industries

description: This study investigates whether differences in farm resources ownerships between male and female farmers in Africa result in crop productivity differentials. The case study uses farm management survey data on smallholder farmers from eight villages in Botswana. The findings show that there are no significant differences in crop productivity between male farmers and their female counterparts, neither are there any significant differences in the input production elasticities. Since African women farmers dominate food production systems in many parts of sub-Sahara Africa, and they are technically as efficient as their male counterparts, empowering them with more productive assets will lead to an improvement in the chaotic food security situation in Africa.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
Prethermalization, thermalization, and Fermi's golden rule in quantum many-body systems
Creators: name: Mallayya, Krishnanand
name: Rigol, Marcos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the prethermalization and thermalization dynamics of local observables in weakly perturbed nonintegrable systems, with Hamiltonians of the form $\hat{H}_0+g\hat{V}$, where $\hat{H}_0$ is nonintegrable and $g\hat{V}$ is a perturbation. We explore the dynamics of far from equilibrium initial states in the thermodynamic limit using a numerical linked cluster expansion (NLCE), and in finite systems with periodic boundaries using exact diagonalization. We argue that generic observables exhibit a two-step relaxation process, with a fast prethermal dynamics followed by a slow thermalizing one, only if the perturbation breaks a conserved quantity of $\hat{H}_0$ and if the value of the conserved quantity in the initial state is $\mathcal{O}(1)$ different from the one after thermalization. We show that the slow thermalizing dynamics is characterized by a rate $\propto g^2$, which can be accurately determined using a Fermi golden rule (FGR) equation. We also show that during such a slow dynamics, observables can be described using projected diagonal and Gibbs ensembles, and we contrast their accuracy.
description: 15 pages, 9 figures
Phrynobatrachus latifrons Ahl 1924
Creators: name: Kanga, Kouassi Philippe
name: Kouamé, N'Goran Germain
name: Zogbassé, Parfait
name: Gongomin, Basseu Aude-Inès
name: Agoh, Konan Laurent
name: Kouamé, Akoua Michèle
name: Konan, Jean Christophe B. Y. N.
name: Adepo-Gourène, Abouo Béatrice
name: Gourène, Germain
name: Rödel, Mark-Oliver
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Phrynobatrachidae
Phrynobatrachus
Phrynobatrachus latifrons

description: Phrynobatrachus latifrons Ahl, 1924
Savannah Puddle Frog
Material: One female, NGK-Nimba 0064 (Fig. 12A), and one male, NGK-Nimba 0065 (Fig. 12B).
Comments: Phrynobatrachus latifrons is a very common and widespread, semi-aquatic West African puddle frog, living in savannah and heavily degraded rainforest habitats (Rödel 1995 [there erroneously termed P. francisci], 2000; Kouamé et al. 2018). The species was abundant in the Yéalé village. In particular, we heard males calling between densely vegetated parts of swamps and paddy fields (07°31.928’N, 008°25.401’W; 425 m asl). An adult female with a broad green back and a light vertebral line exhibited an unusual thin, light longitudinal line on upper surface of the tibia (22.0 mm). A uniform brown frog (18.1 mm) exhibited the bright yellow throat, typical for adult males.
description: Published as part of Kanga, Kouassi Philippe, Kouamé, N'Goran Germain, Zogbassé, Parfait, Gongomin, Basseu Aude-Inès, Agoh, Konan Laurent, Kouamé, Akoua Michèle, Konan, Jean Christophe B. Y. N., Adepo-Gourène, Abouo Béatrice, Gourène, Germain & Rödel, Mark-Oliver, 2021, Amphibian diversity of a West African biodiversity hotspot: an assessment and commented checklist of the batrachofauna of the Ivorian part of the Nimba Mountains, pp. 71-107 in Amphibian & Reptile Conservation (e 275) (e 275) 15 (1) on page 90, DOI: 10.5281/zenodo.11287122
Gravitational ringing of rotating black holes in higher-derivative gravity
Creators: name: Cano, Pablo A.
name: Fransen, Kwinten
name: Hertog, Thomas
name: Maenaut, Simon
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study gravitational perturbations of slowly-rotating black holes in a general effective-field-theory extension of general relativity that includes up to eight-derivative terms. We show that two Schrödinger-like equations with spin-dependent effective potentials govern the odd - and even-parity master variables. These equations are coupled for parity-violating corrections, and this coupling affects the quasinormal modes even at linear order in the higher-derivative corrections, due to their isospectrality in general relativity. We provide results for the shifts in the fundamental quasinormal mode frequencies at linear order in the spin, which we expect to be valuable for high-precision phenomenology through future gravitational wave observations.
description: 10 pages + appendices, 2 figures, double column. v2: references added, version sent to the journal
Plant communities and their standing crops on estuaries of the east coast of Vancouver Island
Creators: name: Kennedy, Kathryn Ann
Publisher: name: University of British Columbia
Year: 2010

description: The emergent plant communities on eighteen estuaries on the east coast of Vancouver Island and one estuary on the mainland coast of British Columbia are described and their distribution mapped (scale 1 cm = 48 m, 1 cm = 158 m, 1 cm = 32 m). There are eleven types of estuaries. Monthly measurements of nitrogen (N) and standing crop by living, dead, senescent and duff portions were made on eleven communities in five estuaries; 1. Cowichan Carex lyngbyei and Juncus balticus; 2. Chemainus Salicornia virginica and Distichlis spicata - Grindelia integrifolia; 3. Little Qualicum Carex lyngbyei and Potentilla pacifica - Carex lyngbyei; 4. Campbell Carex lyngbyei and Potentilla pacifica - Eleocharjs palustris; and; 5. Salmon Carex lyngbyei, Deschampsia cespitosa - Carex lyngbyei and Poa pratensis -Agrostis alba var. stolonifera - Potentilla pacifica. Root cores collected monthly from five plots in each community were grown in the dark at 20°C to measure root reserves. Kjeldahl nitrogen (N) was determined for representative samples as a rough measure of the quantity of protoplasmic constituents as opposed to structural components. The highest N values occurred in the living portions with the highest, 2.43%, occurring in April in the Cowichan Carex lyngbyei community. The standing crops (gm m⁻²) are [See Thesis for Chart]. The largest standing crops occur in the Carex lyngbyei, and Chemainus Salicornia virginica and Distichlis spicata -Grindelia integrifolia communities. While dry matter in the Carex lyngbyei communities disappeared between the growing seasons it accumulated in the Salicornia virginica and Distichlis spicata - Grindelia integrifolia communities. Dry matter accumulated to a lesser extent in the higher elevation communities. Etiolated shoots from root cores grew in the dark from 0 to a maximum of 573 days for the Little Qualicum Potentilla pacifica - Carex lyngbyei community. Root reserves are periodic with the decreasing trend in April and May coinciding with the initiation and rapid growth of the canopy. The peak in standing crop is followed by a peak in root reserves within one month. It is proposed that some carbohydrates and mineral elements are translocated, and reallocated between the below and above ground structures.
High Precision determination of the pi, K, D and D_s decay constants from lattice QCD
Creators: name: Follana, E.
name: Davies, C. T. H.
name: Lepage, G. P.
name: Shigemitsu, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We determine $D$ and $D_s$ decay constants from lattice QCD with 2% errors, 4 times better than experiment and previous theory: $f_{D_s}$ = 241(3) MeV, $f_D$ = 207(4) MeV and $f_{D_s}/f_D$ = 1.164(11). We also obtain $f_K/f_π$ = 1.189(7) and $(f_{D_s}/f_D)/(f_K/f_π)$ = 0.979(11). Combining with experiment gives $V_{us}$=0.2262(14) and $V_{cs}/V_{cd}$ of 4.43(41). We use a highly improved quark discretization on MILC gluon fields that include realistic sea quarks fixing the $u/d, s$ and $c$ masses from the $π$, $K$, and $η_c$ meson masses. This allows a stringent test against experiment for $D$ and $D_s$ masses for the first time (to within 7 MeV).
description: 4 pages, 2 figures. Published version - changes from original include a more extensive discussion of errors and an error budget table covering more quantities. There are very small changes in some of the values reported
title: Impact of changes in friction factor on the loading of the pumping section in a high pressure injection pump
Creators: name: Smolec, Rafał
name: Bor, Mateusz
name: Idzior, Marek
name: Karpiuk, Wojciech
name: Borowczyk, Tomasz
Publisher: name: Publishing House of Poznan University of Technology
Year: 2018

description: Journal of Mechanical and Transport Engineering, 70, 2, 53-62
Necessary Changes in Teaching Management for Students of Agricultural Engineering
Creators: name: Alpar, Gyorgy
name: Mathe, Attila
Publisher: name: Unknown
Year: 1997
Subjects: Teaching/Communication/Extension/Profession
Farm Management

description: For a couple of decades Hungarian economy has been characterized with a central economic decision system having been far from (world) market rules. Artificially operated organizations (in production, distribution and supply) were driven by the government through certain controlling regulations. Financial results originated from 'bargaining' and the whole economic surrounding was not suitable for any innovations. Organizations needed 'heads' but managers. Manager and entrepreneur as per categories were counted as foreign parts in the 'existing' socialism. After changing the socio-economic system in 1989 new phenomena emerged in the Hungarian economy just as privatization of state properties, appearance of foreign capital, heavy competition between organizations, closer co-operation within the logistic chain, strengthening of consumer-focused behaviour patterns, fast diffusion of information and communication techniques, accessable information systems, internationalized company leading, eurostandards etc. All these processes assume employing managers possessing the newest management skills and practices. Even the training of agricultural experts has to meet this challange. Our study is to discuss the necessary steps in training organization, subject matter structuring, knowledge clustering and in knowledge transfer leading to establishing the backgrounds of an effective agri-business manager training.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
Fluid transport at low Reynolds number with magnetically actuated artificial cilia
Creators: name: Gauger, Erik M.
name: Downton, Matthew
name: Stark, Holger
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: By numerical modeling we investigate fluid transport in low-Reynolds-number flow achieved with a special elastic filament or artifical cilium attached to a planar surface. The filament is made of superparamagnetic particles linked together by DNA double strands. An external magnetic field induces dipolar interactions between the beads of the filament which provides a convenient way of actuating the cilium in a well-controlled manner. The filament has recently been used to successfully construct the first artificial micro-swimmer [R. Dreyfus at al., Nature 437, 862 (2005)]. In our numerical study we introduce a measure, which we call pumping performance, to quantify the fluid transport induced by the magnetically actuated cilium and identify an optimum stroke pattern of the filament. It consists of a slow transport stroke and a fast recovery stroke. Our detailed parameter study also reveals that for sufficiently large magnetic fields the artificial cilium is mainly governed by the Mason number that compares frictional to magnetic forces. Initial studies on multi-cilia systems show that the pumping performance is very sensitive to the imposed phase lag between neighboring cilia, i.e., to the details of the initiated metachronal wave.
description: 12 pages, 10 figures. To appear in EPJE, available online at http://dx.doi.org/10.1140/epje/i2008-10388-1
Phrynobatrachus liberiensis Barbour and Loveridge 1927
Creators: name: Kanga, Kouassi Philippe
name: Kouamé, N'Goran Germain
name: Zogbassé, Parfait
name: Gongomin, Basseu Aude-Inès
name: Agoh, Konan Laurent
name: Kouamé, Akoua Michèle
name: Konan, Jean Christophe B. Y. N.
name: Adepo-Gourène, Abouo Béatrice
name: Gourène, Germain
name: Rödel, Mark-Oliver
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Phrynobatrachidae
Phrynobatrachus
Phrynobatrachus liberiensis

description: Phrynobatrachus liberiensis Barbour and Loveridge, 1927
Liberian Puddle Frog
Material: Male, NGK-Nimba 0071 (Fig. 12C).
Comments: Phrynobatrachus liberiensis is generally found along swamps and shallow streams in primary forests (Rödel and Branch 2002; Kouamé et al. 2018). Many males were heard calling, being well concealed sitting on the banks of a shallow stream in a swampy patch of dense forest (07°32.993’N, 008°24.753’W; 425 m asl). A male (27.0 mm) and a young female (26.0 mm) were caught.
description: Published as part of Kanga, Kouassi Philippe, Kouamé, N'Goran Germain, Zogbassé, Parfait, Gongomin, Basseu Aude-Inès, Agoh, Konan Laurent, Kouamé, Akoua Michèle, Konan, Jean Christophe B. Y. N., Adepo-Gourène, Abouo Béatrice, Gourène, Germain & Rödel, Mark-Oliver, 2021, Amphibian diversity of a West African biodiversity hotspot: an assessment and commented checklist of the batrachofauna of the Ivorian part of the Nimba Mountains, pp. 71-107 in Amphibian & Reptile Conservation (e 275) (e 275) 15 (1) on page 90, DOI: 10.5281/zenodo.11287122
Facile equilibration of well-entangled semiflexible bead-spring polymer melts
Creators: name: Dietz, Joseph D.
name: Hoy, Robert S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The widely used double-bridging hybrid (DBH) method for equilibrating simulated entangled polymer melts [R. Auhl et al., J. Chem. Phys. v. 119, p. 12718, 2003] loses its effectiveness as chain stiffness increases into the semiflexible regime because the energy barriers associated with double-bridging Monte Carlo moves become prohibitively high. Here we overcome this issue by combining DBH with the use of core-softened pair potentials. This reduces the energy barriers substantially, allowing us to equilibrate melts with $N \simeq 40 N_e$ and chain stiffnesses all the way up to the isotropic-nematic transition using simulations of no more than 100 million timesteps. For semiflexible chains, our method is several times faster than standard DBH; we exploit this speedup to develop improved expressions for Kremer-Grest melts' chain-stiffness-dependent Kuhn length $\ell_K$ and entanglement length $N_e$.
description: Substantially revised: 11 pages, 11 figures
Peer Review of Tradeoff within Image Compression and Quality Estimation
Creators: name: Singam, Amitesh Kumar
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 461301
subject: Coding, information theory and compression
classificationCode: 460306
subject: Image processing
classificationCode: 400602
subject: Data communications

description: Image quality assessment (IQA) evaluates the quality of an image by computing the difference between the reference and reconstructed image in case of lossy or distorted image in case of lossless compression. Generally, IQA methods are classified into full-reference, reduced-reference, and no reference but our interest lies within case study of image compression towards quality assessment and to evaluate the trade-off of compression and image quality assessment, and it has been concluded that rate-distortion analysis should only be utilized for compression, not for quality estimation.
Phrynobatrachus natalensis
Creators: name: Kanga, Kouassi Philippe
name: Kouamé, N'Goran Germain
name: Zogbassé, Parfait
name: Gongomin, Basseu Aude-Inès
name: Agoh, Konan Laurent
name: Kouamé, Akoua Michèle
name: Konan, Jean Christophe B. Y. N.
name: Adepo-Gourène, Abouo Béatrice
name: Gourène, Germain
name: Rödel, Mark-Oliver
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Phrynobatrachidae
Phrynobatrachus
Phrynobatrachus natalensis

description: Phrynobatrachus natalensis (Smith, 1849)
Natal Puddle Frog
Material: Two males, NGK-Nimba 0032 (Fig. 12D), NGK-Nimba 0033, and two females, NGK-Nimba 0035, NGK-Nimba 0036 (Fig. 12E).
Comments: Phrynobatrachus natalensis as currently defined (Channing and Rödel 2019) comprise several cryptic species widespread throughout the savannah areas of sub-Saharan Africa (Zimkus et al. 2010). We encountered the species in the Yéalé village, near road puddles in dense vegetation (07°31.928’N, 008°25.401’W; 425 m asl). Other active males were found at night between tufts of ornamental plants around houses after heavy rainfalls. Adult males were uniform brown (26.0– 28.1 mm; N = 6) and had black throats with folds, while adult females (27.8–33.5 mm; N = 8) had white, mottled brown or greyish-black throats. One female exhibited an exceptionally conspicuous greyish-brown back with green spots and a green interorbital line; other females being uniform brown. Some frogs reproduced in a large pond within dense vegetation. Four clutches comprising, 938, 1021, 1265, and 1501 small reddish-brown eggs, were floating on the water surface. Mean egg diameter was 0.9 mm (± 0.1 mm; N = 20). Clutch sizes therefore seem to be larger in West African, compared to southern African, populations (compare values in Rödel 2000).
description: Published as part of Kanga, Kouassi Philippe, Kouamé, N'Goran Germain, Zogbassé, Parfait, Gongomin, Basseu Aude-Inès, Agoh, Konan Laurent, Kouamé, Akoua Michèle, Konan, Jean Christophe B. Y. N., Adepo-Gourène, Abouo Béatrice, Gourène, Germain & Rödel, Mark-Oliver, 2021, Amphibian diversity of a West African biodiversity hotspot: an assessment and commented checklist of the batrachofauna of the Ivorian part of the Nimba Mountains, pp. 71-107 in Amphibian & Reptile Conservation (e 275) (e 275) 15 (1) on page 90, DOI: 10.5281/zenodo.11287122
title: Development trends of high pressure common-rail pumps
Creators: name: Smolec, Rafał
name: Bor, Mateusz
name: Karpiuk, Wojciech
name: Idzior, Marek
Publisher: name: Publishing House of Poznan University of Technology
Year: 2018

description: Journal of Mechanical and Transport Engineering, 70, 2, 63-72
Teaching Management into the 21st Century, A Norwegian Perspective
Creators: name: Hallesby, Ole Christen
name: Bustnes, Arild
Publisher: name: Unknown
Year: 1997
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: Changes in the framework for political agreements have in the last couple of years led to a situation of increased uncertainty for Norwegian farmers. It is becoming ever more important to make the right decisions for the future. This study is made for the Norwegian Farmers Union for the next century. The decision making model puts the farming family in the center, and focus on strategic planning for the coming years. The study helps the family to make the right decisions in the long term planning for the farm. By analyzing the total amount of resources on the farm, compared with the needs of the family, the process will lead to the right solution for the family, and offers a strategic plan for the future.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
A concrete co-existential map that is not confluent
Creators: name: Hart, Klaas Pieter
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Topology (math.GN)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 54F15, 03C20

description: We give a concrete example of a co-existential map between continua that is not confluent.
description: 2008-10-11: revision after referee report
Small-Scale Farmers' Education for Africa in the Twenty-First Century
Creators: name: Onucheyo, Emmanuel
Publisher: name: Unknown
Year: 1997
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: Most of Africa's food is produced by the ordinary small-scale fanners. The twenty-first century will be both exciting and challenging for the well-prepared farmer. The excitement will be in the increasing market opportunities due to increasing population and urbanisation in Africa and globalisation in the world economy. The fears and challenges emanate from the state of preparedness of the farmer for this assignment, declining resources going into Africa's agriculture and increasing consumers' demands for better foods and higher quality. A lot of technologies passed to them through extension have had only brief adoption due to lack of sustainable policies. They have returned to their old crop varieties and practices that do not require external support. Agricultural programmes that have been very successful in other places have not produced similar results in Africa. Africa's agricultural problem is about eighty-ninety percent socio-political and ten-twenty percent technical. The paper calls for Farmers Education Programmes (FEP) that will focus on the real problems, and deal with issues that affect farmers' motivation, attitudes and behaviour. The FEP should have elements of civics, business and organisational skills, strong marketing extension, theatre for development, etc. Farmers-initiated, well-implemented FEP will assist the African small- scale farmers in the twenty-first century.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
Two Ferromagnetic Phases in Spin-Fermion Systems
Creators: name: Karchev, Naoum
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider spin-fermion systems which get their magnetic properties from a system of localized magnetic moments being coupled to conducting electrons. The dynamical degrees of freedom are spin-$s$ operators of localized spins and spin-1/2 fermi operators of itinerant electrons. We develop modified spin-wave theory and obtain that system has two ferromagnetic phases. At the characteristic temperature T* the magnetization of itinerant electrons becomes zero, and high temperature ferromagnetic phase (T*
Phrynobatrachus phyllophilus Rodel and Ernst 2002
Creators: name: Kanga, Kouassi Philippe
name: Kouamé, N'Goran Germain
name: Zogbassé, Parfait
name: Gongomin, Basseu Aude-Inès
name: Agoh, Konan Laurent
name: Kouamé, Akoua Michèle
name: Konan, Jean Christophe B. Y. N.
name: Adepo-Gourène, Abouo Béatrice
name: Gourène, Germain
name: Rödel, Mark-Oliver
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Phrynobatrachidae
Phrynobatrachus
Phrynobatrachus phyllophilus

description: Phrynobatrachus phyllophilus Rödel and Ernst, 2002
Leaf-loving Puddle Frog
Material: Male, NGK-Nimba 0037 (Fig. 12F).
Comments: Phrynobatrachus phyllophilus prefers patches of swampy primary forest from eastern Ivory Coast to Sierra Leone (Rödel and Ernst 2002a; Ernst and Rödel 2006; Kouamé et al. 2008, 2014, 2018; Channing and Rödel 2019). We found only one male (15.0 mm) during the rainy season. It was concealed among dense leaf litter, in a patch of dense forest, intersected by a small stream (07°32.993’N, 008°24.753’W; 425 m asl).
description: Published as part of Kanga, Kouassi Philippe, Kouamé, N'Goran Germain, Zogbassé, Parfait, Gongomin, Basseu Aude-Inès, Agoh, Konan Laurent, Kouamé, Akoua Michèle, Konan, Jean Christophe B. Y. N., Adepo-Gourène, Abouo Béatrice, Gourène, Germain & Rödel, Mark-Oliver, 2021, Amphibian diversity of a West African biodiversity hotspot: an assessment and commented checklist of the batrachofauna of the Ivorian part of the Nimba Mountains, pp. 71-107 in Amphibian & Reptile Conservation (e 275) (e 275) 15 (1) on page 92, DOI: 10.5281/zenodo.11287122
Learning the structure of wind: A data-driven nonlocal turbulence model for the atmospheric boundary layer
Creators: name: Keith, Brendan
name: Khristenko, Ustim
name: Wohlmuth, Barbara
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We develop a novel data-driven approach to modeling the atmospheric boundary layer. This approach leads to a nonlocal, anisotropic synthetic turbulence model which we refer to as the deep rapid distortion (DRD) model. Our approach relies on an operator regression problem which characterizes the best fitting candidate in a general family of nonlocal covariance kernels parameterized in part by a neural network. This family of covariance kernels is expressed in Fourier space and is obtained from approximate solutions to the Navier--Stokes equations at very high Reynolds numbers. Each member of the family incorporates important physical properties such as mass conservation and a realistic energy cascade. The DRD model can be calibrated with noisy data from field experiments. After calibration, the model can be used to generate synthetic turbulent velocity fields. To this end, we provide a new numerical method based on domain decomposition which delivers scalable, memory-efficient turbulence generation with the DRD model as well as others. We demonstrate the robustness of our approach with both filtered and noisy data coming from the 1968 Air Force Cambridge Research Laboratory Kansas experiments. Using this data, we witness exceptional accuracy with the DRD model, especially when compared to the International Electrotechnical Commission standard.
Training Young Rural Managers: The "PROJOVEM" Case
Creators: name: Peres, Fernando C.
Publisher: name: Unknown
Year: 1997
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: Today, the Brazilian rural school system is basically oriented toward preparing students to leave the agricultural sector. This paper reports on a new program whose goal is to provide training for young rural managers that are willing to stay in the sector and become farmers. The PROJOVEM case was specially designed for elementary school drop-outs and is being executed by a collaboration between The Sao Paulo Center for Vocational Training (CEETEPS) and The University of Sao Paulo. The program has its learning method based on a modified version of the “Alternate Pedagogy” initially developed by small French farmers during the 1930's. Rather than the traditional disciplinary approach to learning, the PROJOVEM program bases its learning method on developing and executing individual agricultural activity projects. Following on from project development the program moves on to portfolio management, which uses a comprehensive process and requires a modest amount of resources to be implemented.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
Ferroelectric-HfO2/Oxide Interfaces, Oxygen Distribution Effect and Implications for Device Performance
Creators: name: Zhao, Shihui
name: Li, Bowen
name: Guo, Yuzheng
name: Li, Huanglong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Atomic-scale understanding of HfO2 ferroelectricity is important to help address many challenges in developing reliable and high-performance ferroelectric HfO2 (fe-HfO2) based devices. Though investigated from different angles, a factor that is real device-relevant and clearly deserves more attention has largely been overlooked by previous research, namely, the fe-HfO2/dielectric interface. Here, we investigate the electronic structures of several typical interfaces formed between ultrathin fe-HfO2 and oxide dielectrics in the sub-3-nm region. We find that interface formation introduces strong depolarizing fields in fe-HfO2, which is detrimental for ferroelectric polarization but can be a merit if tamed for tunneling devices, as recently demonstrated. Asymmetric oxygen distribution-induced polarity, intertwined with ferroelectric polarization or not, is also investigated as a relevant interfacial effect in real device. Though considered detrimental from certain aspects, such as inducing build-in field (independent of ferroelectric polarization) and exacerbating depolarization (intertwined with ferroelectric polarization), it can be partly balanced out by other effects, such as annealing (extrinsic) and polarity-induced defect formation (intrinsic). This work provides insights into ferroelectric-HfO2/dielectric interfaces and some useful implications for the development of devices.
Phrynobatrachus tokba
Creators: name: Kanga, Kouassi Philippe
name: Kouamé, N'Goran Germain
name: Zogbassé, Parfait
name: Gongomin, Basseu Aude-Inès
name: Agoh, Konan Laurent
name: Kouamé, Akoua Michèle
name: Konan, Jean Christophe B. Y. N.
name: Adepo-Gourène, Abouo Béatrice
name: Gourène, Germain
name: Rödel, Mark-Oliver
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Phrynobatrachidae
Phrynobatrachus
Phrynobatrachus tokba

description: Phrynobatrachus tokba (Chabanaud, 1921)
Tokba Puddle Frog
Material: Female, NGK-Nimba 0038 (Fig. 12G).
Comments: Phrynobatrachus tokba occurs in primary to degraded forests, and montane grassland, from western Guinea to Ghana (Guibé and Lamotte 1963; Rödel et al. 2004, 2005; Kouamé et al. 2018; Channing and Rödel 2019). This species reproduces terrestrially, by depositing clutches in moist leaves, and has non-feeding, non-hatching tadpoles (Rödel and Ernst 2002b). A large number of P. tokba males called in the drier part of the forest. A brown female measured 18.0 mm. Further populations were detected in moist savannah adjacent to forest, and even in sympatry with Nimbaphrynoides occidentalis up to 1,235 m asl in montane grasslands (07°35.555’N, 008°25.788’W; Fig. 12H).
description: Published as part of Kanga, Kouassi Philippe, Kouamé, N'Goran Germain, Zogbassé, Parfait, Gongomin, Basseu Aude-Inès, Agoh, Konan Laurent, Kouamé, Akoua Michèle, Konan, Jean Christophe B. Y. N., Adepo-Gourène, Abouo Béatrice, Gourène, Germain & Rödel, Mark-Oliver, 2021, Amphibian diversity of a West African biodiversity hotspot: an assessment and commented checklist of the batrachofauna of the Ivorian part of the Nimba Mountains, pp. 71-107 in Amphibian & Reptile Conservation (e 275) (e 275) 15 (1) on page 92, DOI: 10.5281/zenodo.11287122
Tunneling properties of a bound pair of Fermi atoms in an optical lattice
Creators: name: Ohashi, Yoji
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate tunneling properties of a bound pair of Fermi atoms in an optical lattice, comparing with results obtained in an attractive Hubbard model. In the strong coupling regime of the Hubbard model, it has been predicted that the motion of a bound pair between lattice sites is accompanied by virtual dissociation. To explore the possibility of this interesting phenomenon in optical lattice, we calculate molecular wavefunction in a cosine-shape periodic potential. We show that the molecular tunneling accompanied by dissociation occurs in the intermediate coupling regime of the optical lattice system. In the strong coupling regime, in contrast to the prediction in the Hubbard model, the bound pair is shown to tunnel through lattice potential without dissociation. As a result, the magnitude of molecular band mass M remains finite even in the strong coupling limit, which is in contrast to the diverging molecular mass in the case of the Hubbard model. Including this finite value of molecular band mass, we evaluate the superfluid phase transition temperature Tc in the BEC limit of the optical lattice system, where the Hubbard model gives Tc=0 due to the diverging molecular mass.
description: 20 pages, 9 figures
Training Commercial Farmers to Survive in a Post European South Africa
Creators: name: Villiers, C.J. De
Publisher: name: Unknown
Year: 1997
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: Two major changes affected South African agriculture in the past 5 years. A highly state controlled and regulated sector was deregulated and privatised to a great extent and secondly, national policy regarding government aid to commercial farmers changed dramatically. Government aid is now focused on the "previously disadvantaged" African farming sector. Budget focus, staff employment and departmental structures are changing to accomplish new policy goals. All state departments are affected. Financing through the Landbank, agricultural extension, training and numerous subsidy, relief and stabilisation schemes are affected. Amidst the fact that the previous government's aid policy relatively favoured the food producing commercial sector, only 61 000 of the 116 000farmers (in 1950), are still left. If they could not survive with government aid, how will South Africans be able to produce their food without the aid? Challenges to develop new innovative training methods as well as training curricula to cope with the new farming environment will be discussed. Examples will be taken from the experience of Zimbabwe, Australia, New Zealand and others.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
A new calculation for D(e,e'p)n at GeV energies
Creators: name: Jeschonnek, Sabine
name: Van Orden, J. W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We perform a fully relativistic calculation of the D(e,e'p)n reaction in the impulse approximation. We employ the Gross equation to describe the deuteron ground state, and we use the SAID parametrization of the full NN scattering amplitude to describe the final state interactions (FSIs). We include both on-shell and positive-energy off-shell contributions in our FSI calculation. We show results for momentum distributions and angular distributions of the differential cross section, as well as for various asymmetries. We identify kinematic regions where various parts of the final state interactions are relevant, and discuss the theoretical uncertainties connected with calculations at high missing momenta.
title: A Study Of Factors Underlying BCG Immunogenicity Differences Across Countries: The Influence Of DNA Methylation Patterns And Antigen Presenting Cells
Creators: name: Hasso-Agopsowic, MJ
Publisher: name: London School of Hygiene & Tropical Medicine
Year: 2019

description: Introduction: The protective efficacy of the BCG vaccine against pulmonary tuberculosis varies across the globe and is lower in countries near the equator. Previous studies have shown disparate immunogenicity profiles after infant BCG vaccination in The United Kingdom, Malawi, The Gambia and Indonesia. Pre-exposure to environmental mycobacteria and maternal or infant coinfections are one of the mechanisms that could explain these variations. Exact molecular mechanisms that drive sustained differences in BCG immunogenicity are not known. Methods and Hypothesis: In this study we aimed to investigate molecular mechanisms that drive differences in BCG immunogenicity. We hypothesised that differential DNA methylation or dynamic phenotypes of antigen presenting cells contribute to underlying differences in BCG immunogenicity. We used samples from South African, Ugandan and UK BCG vaccinated infants to investigate their BCG-induced immune responses. In South Africa we compared DNA methylation profiles between high and low BCG responders. In the UK and Uganda, we compared BCG specific immune responses and DNA methylation profiles between both countries. Lastly, in Uganda, we investigated longitudinal changes in dendritic cell phenotypes. Results: We found that differential DNA methylation of immune pathways such as T cell activation, or potassium and calcium channel Signalling is associated with variation in BCG immunogenicity in South African infants. The 4 comparison of immune responses between UK and Ugandan infants revealed that Ugandan infants have a strong inflammatory response to BCG, but levels of TH1 and TH2 cytokines are similar. The analysis of DNA methylation between these countries revealed that genes of B cell activation pathway are more methylated in Uganda, whereas genes of TGFb regulatory pathways are more methylated in the UK. The analysis of antigen presenting cells revealed that key dendritic cell populations are absent at birth and develop within the first year of life. We also highlight that cytomegalovirus (CMV), Epstein-Barr virus (EBV) and maternal latent tuberculosis infection (LTBI) have profound effects on dendritic cell phenotypes. Implications: These results point towards a role for DNA methylation in the regulation of BCG immune responses, however, in vitro studies focusing on highlighted gene candidates and pathways should be conducted. Small differences in immunogenicity profiles after BCG vaccination in the UK and Uganda suggest that BCG efficacy in these countries should be similar, an area requiring a further investigation. The absence of dendritic cells at birth should be investigated and the kinetics of their development within the first week of life examined. Special attention should be paid to the development of vaccines or treatments for CMV, EBV and LTBI, as these pathogens modulate DC phenotypes.
Improving Unsupervised Domain Adaptive Re-Identification via Source-Guided Selection of Pseudo-Labeling Hyperparameters
Creators: name: Dubourvieux, Fabian
name: Loesch, Angélique
name: Audigier, Romaric
name: Ainouz, Samia
name: Canu, Stéphane
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Unsupervised Domain Adaptation (UDA) for re-identification (re-ID) is a challenging task: to avoid a costly annotation of additional data, it aims at transferring knowledge from a domain with annotated data to a domain of interest with only unlabeled data. Pseudo-labeling approaches have proven to be effective for UDA re-ID. However, the effectiveness of these approaches heavily depends on the choice of some hyperparameters (HP) that affect the generation of pseudo-labels by clustering. The lack of annotation in the domain of interest makes this choice non-trivial. Current approaches simply reuse the same empirical value for all adaptation tasks and regardless of the target data representation that changes through pseudo-labeling training phases. As this simplistic choice may limit their performance, we aim at addressing this issue. We propose new theoretical grounds on HP selection for clustering UDA re-ID as well as method of automatic and cyclic HP tuning for pseudo-labeling UDA clustering: HyPASS. HyPASS consists in incorporating two modules in pseudo-labeling methods: (i) HP selection based on a labeled source validation set and (ii) conditional domain alignment of feature discriminativeness to improve HP selection based on source samples. Experiments on commonly used person re-ID and vehicle re-ID datasets show that our proposed HyPASS consistently improves the best state-of-the-art methods in re-ID compared to the commonly used empirical HP setting.
description: Preprint version. Accepted in IEEE Access (see IEEE Access for final version)
Using Farmers, Advisors and Extension Officers as Co-Operative Partners in the Training of Agricultural Students: A South African Experience
Creators: name: Van Der Westhuitzen, Carlu
Publisher: name: Unknown
Year: 1997
Subjects: Farm Management
Teaching/Communication/Extension/Profession

description: This Technikon has made use of extensive research to determine which management skills and knowledge a student should possess for success in farming. Because of an increase in the number of black tertiary students, usually with limited previous exposure to farming activities, the training methodology used had to be adapted as well The information was integrated into eight projects that were formulated for completion during the students ’ second year of training. Due to the fact that continuous physical monitoring of students is virtually impossible, several control systems are built into the system. The system is designed so that both the student (widening field of reference) and the farmer benefits from the presence of the student on the farm. This is achieved by means of a commitment from the farmer and a mentor to check the projects for suitability, which ensures that the student obtains relevant management information that can be applied readily.
description: Eleventh International Farm Management Congress, University of Calgary, Canada, July 14-19, 1997
Lambda Mu Calculus and Duality: Call-by-Name and Call-by-Value
Creators: name: Rocheteau, Jérôme
Publisher: name: arXiv
Year: 2007
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: Under the extension of Curry-Howard's correspondence to classical logic, Gentzen's NK and LK systems can be seen as syntax-directed systems of simple types respectively for Parigot's Lambda Mu Calculus and Curien-Herbelin's Lambda Bar Mu Mu Tidle Calculus. We aim at showing their computational equivalence. We define translations between these calculi. We prove simulation theorems for an undirected evaluation as well as for call-by-name and call-by-value evaluations.
Ion Optics of the High Energy Storage Ring for Operation With Heavy Ions
Creators: name: Kovalenko, O.
name: Dolinskii, A.
name: Litvinov, Yury
name: Stöhlker, T.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2014
Subjects: Physics

description: GSI Scientific Report 2013 - GSI Report 2014-1
"acc.html" of "Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC"
Creators: name: ATLAS Collaboration
Publisher: name: HEPData
Year: 2012

description: Link to the acceptance,efficiency files
description: CERN-LHC. Search for direct pair production of heavy top-quark partners in proton-proton interactions of centre-of-mass energy of 7 TeV with a final state containing 2 leptons. The data sample taken during 2011 has a total integrated luminosity of 4.7 fb-1. Two models are compared with the data, one with a spin 1/.2 heavy top-quark and a heavy neutral partner and the other a supersymmetric scalar top quark and a massless neutralino. See the text of the paper for more details.