cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Banana and plantain technology toolkit catalogue. Clearinghouse technical report series 019
Creators: name: TAAT Program
name: African Agricultural Leadership Institute (AALI)
Publisher: name: Gates Open Research
Year: 2024

description: This catalogue describes a series of proven technologies for and management and agro-processing that promote increased productivity and profitability in Africa. It was developed through a collaborative effort by the Technologies for African Agricultural Transformation (TAAT) Program. It seeks to increase stakeholder use of proven agricultural technologies and the Agriculture Transformation Agenda of the Democratic Republic of Congo (ATA-DRC). The International Institute of Tropical Agriculture (IITA) is an active partner in both efforts. Together, these partners identified several proven technologies that advance and production and processing as a means of achieving greater food self-sufficiency and adding economic value to agriculture. These technologies constitute a "technology toolkit" meant to promote understanding and stimulate adoption and investment in the modernization of farm enterprises.
Freedom in electroweak symmetry breaking and mass matrix of fermions in dimensional deconstruction model
Creators: name: Nojiri, Shin'ichi
name: Odintsov, Sergei D.
name: Sugamoto, Akio
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There exists a freedom in a class of four-dimensional electroweak theories proposed by Arkani-Hamed et al. relying on deconstruction and Coleman-Weinberg mechanism. The freedom comes from the winding modes of the link variable (Wilson operator) connecting non-nearest neighbours in the discrete fifth dimension. Using this freedom, dynamical breaking of SU(2) gauge symmetry, mass hierarchy patterns of fermions and Cabbibo-Kobayashi-Maskawa matrix may be obtained.
description: LaTeX file 15 pages, no figure, discussion is enlarged, references are added
Exact equivalences and phase discrepancies between random matrix ensembles
Creators: name: Santilli, Leonardo
name: Tierz, Miguel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study two types of random matrix ensembles that emerge when considering the same probability measure on partitions. One is the Meixner ensemble with a hard wall and the other are two families of unitary matrix models, with weight functions that can be interpreted as characteristic polynomial insertions. We show that the models, while having the same exact evaluation for fixed values of the parameter, may present a different phase structure. We find phase transitions of the second and third order, depending on the model. Other relationships, via direct mapping, between the unitary matrix models and continuous random matrix ensembles on the real line, of Cauchy-Romanovski type, are presented and studied both exactly and asymptotically. The case of orthogonal and symplectic groups is studied as well and related to Wronskians of Chebyshev polynomials, that we evaluate at large $N$.
description: 41 pages, 10 figures. v2: some explanations and references added, final version
Cecilia Beaux's Images of Women
Creators: name: Uithol, Ruthann R.
name: Broude, Norma
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
Economics of Poultry Egg Production under two Managemnt Systems in Ogun State, Nigeria
Creators: name: Ayinde, I. A.
name: Ibrahim, S. B.
name: Arowolo, S. O.
name: Ayinde, I. A.
name: Ibrahim, S. B.
name: Arowolo, S. O.
Publisher: name: Unknown
Year: 2012
Subjects: subject: Livestock Production/Industries
subject: Production Economics
subject: Productivity Analysis
subject: Economics
subject: Poultry egg production
subject: Management systems
subject: Ogun state

description: This study examined the economics of poultry egg production under different management systems. The study was conducted in Odeda Local Government Area of Ogun State in 2008. The data were obtained through administration of questionnaire on 60 respondents. The data collected were analysed through a combination of descriptive statistics, budgetary techniques, profitability ratios and multiple regression analysis. The study results showed that the Gross Margin under battery cage system per bird / year was N8, 089.56, while the Net Farm Income per bird / year was N1, 773. 17. Under deep litter system, the Gross Margin per bird / year was N1, 404.09, while the Net Farm Income per bird / year was N1,029.43. The regression result showed that educational qualification (α=0.10), total feed used (α=0.05), total labour used (α=0.05), and the stock size (α=0.01), were significant determinants affecting the quantity of egg produced. The study concluded that poultry egg production under battery cage system was economically more profitable. Hence, the study recommended among others that improved inputs, good management practices and sound knowledge about poultry farming and must be acquired and put to effective use to ensure the success of the poultry business.
THE RECONSTRUCTION AND DEVELOPMENT PROGRAMME (RDP) AND REGIONAL DEVELOPMENT: A NEW CHALLENGE TO THE AGRICULTURAL ECONOMIST
DIE HEROPBOU- EN ONTWIKKELINGSPROGRAM (HOP) EN STREEKSONTWIKKELING : 'N NUWE UITDAGING VIR DIE LANDBOU-EKONOOM
Creators: name: Coetzee, Stef
name: Coetzee, Stef
Publisher: name: Unknown
Year: 1995
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development

description: Political change has engendered a new regional dispensation which poses development problems and also challenges. Survival and sustainability are key requirements for human security. Modem approaches to regional development favour a bottom-up approach, with local and regional authorities shouldering the main responsibility. The South African government has only recently started to emphasise the need for economic growth as prerequisite for achieving basic needs and human development. The RDP alludes to the importance of a balance between growth and equity. It will have to cope with structural regidities in the South African economy. International competitiveness must be improved by industrial and trade reforms; employment growth must be accelerated; education needs improvement; South Africa must achieve monetary and_fiscal stability, reduced inflation, increased savings and an attack on poverty. A new approach to regional develo~ment ts needed. Although recent agricultural policy statements emphasise a balance efficiency and equity, the accent 1s already on improved access to previously excluded groups, particularly in terms of marketing development, research, fmanc~, extension and human resource development. Regional development will be profoundly influenced by the type of power given to regional governments, fiscal relationships between regional and national governments regional disparities, institutional factors and relationships with NGO's and civics. It is within this framework that agricultural economists must shape their contributions to the RDP.
Additional file 1 of The prevalence of hypoxemia among pediatric and adult patients presenting to healthcare facilities in low- and middle-income countries: protocol for a systematic review and meta-analysis
Creators: name: Lam, Felix
name: Subhi, Rami
name: Houdek, Jason
name: Schroder, Kate
name: Battu, Audrey
name: Graham, Hamish
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
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: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1: Appendices 1-5
LOCAL GOVERNMENT IN RURAL AREAS: IMPLICATIONS FOR DEVELOPMENT
Creators: name: McIntosh, Alastair
name: McIntosh, Alastair
Publisher: name: Unknown
Year: 1995
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development

description: A decentralized local government system in South Africa's rural areas has the potential to wtlock many of the institutional impediments to rural development which existed during the apartheid period This paper outlines some of the problems associated with previous systems of rural administration, and suggest how a decentralized local government system might be expected to overcome some of these problems. The final section discusses of some of the shortcomings of local government transition process in rural areas in the run up to the elections and its implications for the future.
An investigation into the sustainability of liquid sugar in comparison to granulated packaged sugar
Creators: name: Kwok, Pui Yan (Denise)
name: Zhao, Dera
name: Holdijk, Sarah
Publisher: name: The University of British Columbia
Year: 2014

description: Sustainable development requires the smart utilization of resources and balancing the needs of the community and the businesses that are invested in the project. In an effort to make UBC a more sustainable university, UBC Food Services (UBCFS) has switched to liquid sugar pumps as a replacement for single serving package of regular dry sugar in key locations on campus. This report will focus on the research into the impact of the switch. A detailed triple bottom-line assessment of whether liquid sugar is actually more sustainable is reported here. In this triple bottom-line assessment the social, environmental and economic implications of this switched were investigated. Some findings that resulted from this research where that liquid sugar is significantly more expensive then the single serving sugar packets, the plastic containers of the liquid sugar are more environmentally sustainable and the clients and staff of UBCFS locations with the liquid sugar pumps enjoy the convenience and cleanliness of the liquid sugar pumps. In the end, even though liquid sugar appears to be more environmentally and socially sustainable, it is not very feasible economically because of the expensive costs associated with the switch. However, the environmental and social benefits are quite significant and some recommendations to reduce the cost of the switch are presented. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Catalogue de la boîte à outils des Technologies pour la Banane et le Plantain. Bureau de coordination technique du TAAT (série de rapport technique 019)
Creators: name: TAAT Program
name: African Agricultural Leadership Institute (AALI)
Publisher: name: Gates Open Research
Year: 2024

description: Ce catalogue décrit une série de technologies éprouvées pour la gestion et la transformation agroalimentaire des bananes et des plantains qui  favorisent une productivité et une rentabilité accrues en Afrique. Il a été développé grâce à un effort de collaboration du programme Technologies pour la Transformation de   l’Agriculture  Africaine  (TAAT), qui   vise   à  accroître  l’utilisation par   les parties prenantes de technologies agricoles éprouvées, et du  programme de transformation de l’agriculture de la République démocratique du Congo (ATA- RDC). L’Institut  International  d’Agriculture Tropicale (IITA) est  un  partenaire actif  dans ces  deux efforts. Ensemble, ces  partenaires ont  identifié plusieurs technologies éprouvées qui font  progresser la production et la transformation des bananes et des plantains comme moyen d’atteindre une plus   grande autosuffisance alimentaire et d’ajouter de la valeur économique à l’agriculture. Ces  technologies constituent une « boîte à outils de technologies » destinée à  promouvoir la compréhension et à  stimuler l’adoption et l’investissement dans la modernisation des entreprises agricoles.
Pretraining Image Encoders without Reconstruction via Feature Prediction Loss
Creators: name: Pihlgren, Gustav Grund
name: Sandin, Fredrik
name: Liwicki, Marcus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This work investigates three methods for calculating loss for autoencoder-based pretraining of image encoders: The commonly used reconstruction loss, the more recently introduced deep perceptual similarity loss, and a feature prediction loss proposed here; the latter turning out to be the most efficient choice. Standard auto-encoder pretraining for deep learning tasks is done by comparing the input image and the reconstructed image. Recent work shows that predictions based on embeddings generated by image autoencoders can be improved by training with perceptual loss, i.e., by adding a loss network after the decoding step. So far the autoencoders trained with loss networks implemented an explicit comparison of the original and reconstructed images using the loss network. However, given such a loss network we show that there is no need for the time-consuming task of decoding the entire image. Instead, we propose to decode the features of the loss network, hence the name "feature prediction loss". To evaluate this method we perform experiments on three standard publicly available datasets (LunarLander-v2, STL-10, and SVHN) and compare six different procedures for training image encoders (pixel-wise, perceptual similarity, and feature prediction losses; combined with two variations of image and feature encoding/decoding). The embedding-based prediction results show that encoders trained with feature prediction loss is as good or better than those trained with the other two losses. Additionally, the encoder is significantly faster to train using feature prediction loss in comparison to the other losses. The method implementation used in this work is available online: https://github.com/guspih/Perceptual-Autoencoders
On signals of new physics in global event properties in pp collisions in the TeV energy domain
Creators: name: Giovannini, A.
name: Ugoccioni, R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of the weighted superposition mechanism of different classes of minimum bias events (or substructures), described by the negative binomial multiplicity distribution, in possible scenarios for pp collisions in the TeV energy domain, we explore global properties of an eventual new class of events, characterised by high hadron and clan densities, to be added to the soft (without minijets) and semihard (with minijets) ones. It turns out that the main signal of the mentioned new physical expectations at 14 TeV c.m. energy would be an ``elbow structure'' in the tail of the total charged particle multiplicity distribution in complete disagreement with the second shoulder structure predicted by Pythia Monte Carlo calculations: a challenging problem for new experimental work.
description: 14 pages, 6 ps figures included
Optimal Jammer Placement in UAV-assisted Relay Networks
Creators: name: Hosseinalipour, Seyyedali
name: Rahmati, Ali
name: Dai, Huaiyu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We consider the relaying application of unmanned aerial vehicles (UAVs), in which UAVs are placed between two transceivers (TRs) to increase the throughput of the system. Instead of studying the placement of UAVs as pursued in existing literature, we focus on investigating the placement of a jammer or a major source of interference on the ground to effectively degrade the performance of the system, which is measured by the maximum achievable data rate of transmission between the TRs. We demonstrate that the optimal placement of the jammer is in general a non-convex optimization problem, for which obtaining the solution directly is intractable. Afterward, using the inherent characteristics of the signal-to-interference ratio (SIR) expressions, we propose a tractable approach to find the optimal position of the jammer. Based on the proposed approach, we investigate the optimal positioning of the jammer in both dual-hop and multi-hop UAV relaying settings. Numerical simulations are provided to evaluate the performance of our proposed method.
description: 6 pages, 6 figures
Direct measurement of the $^7$Be $L/K$ capture ratio in Ta-based superconducting tunnel junctions
Creators: name: Fretwell, S.
name: Leach, K. G.
name: Bray, C.
name: Kim, G. B.
name: Dilling, J.
name: Lennarz, A.
name: Mougeot, X.
name: Ponce, F.
name: Ruiz, C.
name: Stackhouse, J.
name: Friedrich, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We report a high-statistics measurement of the $L/K$ orbital electron capture (EC) ratio in $^7$Be embedded in cryogenic Ta. The thin Ta film formed part of a high-resolution superconducting tunnel junction (STJ) radiation detector that was used to identify the signals from different decay channels. The measured $L/K$ capture ratio of 0.070(7) is significantly larger than the only previous measurement of this quantity and the theoretical predictions that include in-medium effects. This value is a uniquely sensitive probe of the 1s and 2s orbital overlaps with the nucleus, and is of relevance to nuclear and atomic physics, as well as Li production in novae and other astrophysical scenarios. This is the first experiment that uses STJs for nuclear-recoil detection, opening a new experimental avenue for low-energy precision measurements with rare isotopes.
description: 5 pages, 3 figures
Protagonistas y Tablas de Vaciado.docx
Creators: name: gomez, gabriela
Publisher: name: figshare
Year: 2022
Subjects: subject: Sociology
subject: FOS: Sociology

description: Añadimos la tabla de vaciado utilizada para el proyecto y la descripción de los personajes de las tres telenovelas analizadas: Vencer el Miedo, Vencer el Desamor y Vencer el Pasado.
POLICY MAKING IN THE REAL WORLD: THE PROVISION OF RURAL FINANCIAL SERVICES
BELEIDMAKING IN DIE WERKLIKHEID: DIE VERSKAFFING VAN FINANSllLE DIENSTE
Creators: name: Vink, Nick
name: Coetzee, Gerhard
name: Vink, Nick
name: Coetzee, Gerhard
Publisher: name: Unknown
Year: 1995
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development
Financial Economics

description: This paper describes the process of infonnation gathering and analytical work that was undertaken for the purposes of the Strauss Commission, as a case study of public policy making. The emphasis is on ways of overcoming infonnation constraints given the short time available for the investigation. Any inquiry of this nature has to start with the question: why change? The reasons for change in the provision of rural financial services in South Africa are investigated as a prelude to the analysis of needs and institutions in their future context.
A new search strategy for the Higgs boson
Creators: name: Soffer, Jacques
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a novel mechanism for exclusive diffractive Higgs production $pp \to Hpp$, in which the Higgs carries a significant fraction of the projectile proton's momentum. This mechanism will then provide a clear experimental signal for Higgs production, due to the small background in this kinematic region. The key assumption underlying our analysis is the presence of intrinsic charm (IC) and intrinsic bottom (IB) fluctuations in the proton bound state, whose existence, at high light-cone momentum fraction $x$, has a substantial and growing experimental and theoretical support.
description: 4 pages, 1 figure, Talk presented at the International Conference on QCD and Hadronic Physics, Beijing, June 16-20 (2005)
LESSONS FROM THE ECONOMIC HISTORY OF IRRIGATION DEVELOPMENT FOR SMALLHOLDER SETTLEMENT IN SOUTH AFRICA
LESSE UIT DIE EKONOMIF.SE GF.SKIEDENIS VAN BF.SPROEIINGSONTWIKKEIJNG VIR KLEINBOERVFESTIGING IN SUID-AFRIKA
Creators: name: Backeberg, Gerhard
name: Groenewald, Jan A.
name: Backeberg, Gerhard
name: Groenewald, Jan A.
Publisher: name: Unknown
Year: 1995
Subjects: Agricultural and Food Policy
Environmental Economics and Policy
Resource /Energy Economics and Policy

description: The processes of both irrigation development and policy fonnulation are influenced by complex interactions and environmental changes. A holistic, systematic description and analysis indicates a gradual shift of emphasis from individual to co-operative to public irrigation schemes. For all schemes, variable availability of water and quality of soil presented limitations. The adaptation of extensive or intensive farming practices, viable saes of fanning units, and unrealistic expectations reflected in high land prices, created problems. Following a learning process, it is clear that attention to marketing opportunities, managerial ability and access to capital must be stressed. These factors must definitely be incorporated in current refonn initiatives for land settlement In the case of small-scale irrigation farming, priority must be given to improved utilization of existing schemes, preceded by feasibility studies and accompanied by investment in human capital. Entrepreneurial initiative in the market process must therefore be supported and facilitated by government authorities.
Asteroid and NEA detection models
Creators: name: Michelsen, Rene
name: Haack, Henning
name: Andersen, Anja C.
name: Joergensen, John L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We determine the possible detection rate of asteroids with the Bering mission. In particular we examine the outcome of the Bering mission in relation to the populations of Near-Earth Asteroids and main belt asteroids. This is done by constructing synthetic populations of asteroids, based on the current best estimates of the asteroid size-distributions. From the detailed information obtained from the simulations, the scientific feasibility of Bering is demonstrated and the key technical requirement for the scientific instruments on Bering is determined.
description: 6 pages, 2 figures, to appear in Recent Advances in Space Technologies, IEEE Proceedings XX, in press
Effect of anisotropic impurity scattering on a density of states of a d-wave superconductor
Creators: name: Maciag, A.
name: Pisarski, P.
name: Haran, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We discuss the effect of an anisotropic impurity potential on the critical temperature, local density of states in the vicinity of a single impurity, and the quasiparticle density of states for a finite impurity concentration in a d-wave superconductor. Different scattering regimes are concerned.
description: 3 pages, revtex4, 4 figures
CONSIDERATIONS WITH REGARD TO LAND REFORM IN THE FREE STATE : LAND USE, AVAILABILITY AND NEEDS
OORWEGINGS MET BETREKKING TOT GRONDHERVORMING IN DIE nlYSTAAT : GRONDGEBRUIK, BESKIKBAARHIED EN BEHOEFTES
Creators: name: Potgieter, P. J.
name: Heunis, J. C.
name: Potgieter, P. J.
name: Heunis, J. C.
Publisher: name: Unknown
Year: 1995
Subjects: Environmental Economics and Policy
Land Economics/Use

description: The objective of this paper is to contribute to the process ofland refonn through highlighting important considerations with regard to land refonn in the provincial context of the Free State. It deals with land use, ownership, tenure and availability as well as land needs. Some considerations regarding some major groups of beneficiaries are crucial in the land refonn process; equity, and political and economic stability may be enhanced through land refonn in the Free State. To a lesser extent, efficiency may also be improved if problems with regard to land utilisation are addressed, particularly land tenure an~ security of farmers. Land markets, natural resources and administrative infrastructure appear to be adequate to facilitate market assisted land refonn. However, agro-ecological diversity agro-ecological and pressures on local TLC's to prov~de s:rvic:s, strongly suggest that environmental aspects and town and regional planning must be important considerations m the land reform process. It is important to involve communities in the process of generating solutions that take into account the uniqueness of their situations.
Spacecraft Tracking Applications of the Square Kilometre Array
Creators: name: de Vaate, J. G. Bij
name: Gurvits, L. I.
name: Pogrebenko, S. V.
name: Klooster, C. G. M. van t
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Square Kilometre Array (SKA) is the next generation radio telescope distinguished by a superb sensitivity due to its large aperture (about one square kilometre) and advanced instrumentation. It will cover a broad range of observing bands including those used for tracking of and communications to deep space missions. While spacecraft tracking is not a main application defining the technical specifications of the SKA, this facility might play a role in tracking deep space probes as a backup to the ``dedicated'' deep space tracking networks. This paper presents possible applications of the SKA as a deep space tracking facility and major related technical specifications of various concepts of the SKA. It was presented at the 3rd International Workshop on Tracking, Telemetry and Command Systems for Space Applications, ESA-ESOC, Darmstadt, Germany, 7-9 September 2004. Over the past years, the SKA concept has developed to a much higher level of detalisation and is currently at the implementation phase. A number of specific considerations in this presentation no longer correspond to the actual status of the SKA project. However, the overall concept of the SKA applications for communication and tracking of interplanetary spacecraft remain topical, and some approaches presented here remain of interest for prospective deep space missions.
description: 9 pages, 5 tables, 2 figures
IS TENURE SECURE IN COMMUNAL AREAS?: SOME EMPIRICAL EVIDENCE FROM KWAZULU-NATAL
IS GRONDBESIT IN KOMMUNALEGEBIEDE SEKER?: ENKELE EMPIRIESE BEWYSE UIT KWAZULU-NATAL
Creators: name: Thomson, D. N.
name: Lyne, M. C.
name: Thomson, D. N.
name: Lyne, M. C.
Publisher: name: Unknown
Year: 1995
Subjects: Agricultural and Food Policy
Agricultural Finance

description: This paper questions the view that tenure - defined by the breadth, duration and assurance of property rights to arable land - is secure in the communal areas of KwaZulu-Natal. It also questions the view that new technology induces a predictable shift in tenure institutions, resulting in more exclusive property rights to land. Data collected in the Upper Tugela region and irrigation scheme at Tugela Ferry suggests that households do not have secure tenure and that technical change had not induced a shift toward more exclusive land rights. Consequently, emerging farmers have little incentive to farm in communal areas.
A Unified Study of Necessary and Sufficient Optimality Conditions for Minimax and Chebyshev Problems with Cone Constraints
Creators: name: Dolgopolik, M. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 90C47, 49K35, 90C22, 90C34

description: We present a unified study of first and second order necessary and sufficient optimality conditions for minimax and Chebyshev optimisation problems with cone constraints. First order optimality conditions for such problems can be formulated in several different forms: in terms of a linearised problem, in terms of Lagrange multipliers (KKT-points), in terms of subdifferentials and normal cones, in terms of a nonsmooth penalty function, in terms of cadres with positive cadre multipliers, and in an alternance form. We describe interconnections between all these forms of necessary and sufficient optimality conditions and prove that seemingly different conditions are in fact equivalent. We also demonstrate how first order optimality conditions can be reformulated in a more convenient form for particular classes of cone constrained optimisation problems and extend classical second order optimality condition for smooth cone constrained problems to the case of minimax and Chebyshev problems with cone constraints. The optimality conditions obtained in this article open a way for a development of new efficient structure-exploiting methods for solving cone constrained minimax and Chebyshev problems.
Threshold Policy Effects and Directed Technical Change in Energy Innovation
Creators: name: Nesta, Lionel
name: Verdolini, Elena
name: Vona, Francesco
name: Nesta, Lionel
name: Verdolini, Elena
name: Vona, Francesco
Publisher: name: Unknown
Year: 2018
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Directed Technical Change
subject: Threshold Models
subject: Environmental Policies
subject: Policy Mix

description: This paper analyzes the effect of environmental policies on the direction of energy innovation across countries over the period 1990-2012. Our novelty is to use threshold regression models to allow for discontinuities in policy effectiveness depending on a country's relative competencies in renewable and fossil fuel technologies. We show that the dynamic incentives of environmental policies become effective just above the median level of relative competencies. In this critical second regime, market-based policies are moderately effective in promoting renewable innovation, while command-and-control policies depress fossil based innovation. Finally, market-based policies are more effective to consolidate a green comparative advantage in the last regime. We illustrate how our approach can be used for policy design in laggard countries.
Nearly-logarithmic decay of correlations in glass-forming liquids
Creators: name: Gotze, W.
name: Sperl, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Nearly-logarithmic decay of correlations, which was observed for several supercooled liquids in optical-Kerr-effect experiments [G. Hinze et al. Phys. Rev. Lett. 84, 2437(2000), H. Cang et al. Phys. Rev. Lett. 90, 197401 (2003)], is explained within the mode-coupling theory for ideal glass transitions as manifestation of the $β$-peak phenomenon. A schematic model, which describes the dynamics by only two correlators, one referring to density fluctuations and the other to the reorientational fluctuations of the molecules, yields for strong rotation-translation coupling response functions in agreement with those measured for benzophenone and Salol for the time interval extending from 2 picoseconds to about 20 and 200 nanoseconds, respectively.
description: 4 pages, 3 figures
Additional file 1 of Elevated soluble TNFα levels and upregulated TNFα mRNA expression in purified peripheral blood monocyte subsets associated with high-grade hepatocellular carcinoma
Creators: name: Martín-Sierra, C.
name: R. Martins
name: M. Coucelo
name: A. M. Abrantes
name: R. C. Oliveira
name: J. G. Tralhão
name: M. F. Botelho
name: E. Furtado
name: M. R. Domingues
name: Paiva, A.
name: P. Laranjeira
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. Panel of mAb reagents (with clones and commercial source) used for the immunophenotypic characterization and for cell purification by fluorescence-activated cell sorting of tumor cells and immune cells. Table S2. Absolute numbers (cells/ μL) and frequencies (%) of TNFα producing peripheral blood monocyte subsets in cholangiocarcinoma (CCA) and hepatocellular carcinoma (HCC) patients, both at the time of surgical procedure (T0) and once the patients were recovered from surgery (T1), and in healthy individuals (HG).
A Variational Approach to Network Games
Creators: name: Melo, Emerson
name: Melo, Emerson
Publisher: name: Unknown
Year: 2018
Subjects: subject: Research Methods/ Statistical Methods
subject: Network Games
subject: Variational Inequalities
subject: Lowest Eigenvalue
subject: Shock Propagation

description: This paper studies strategic interaction in networks. We focus on games of strategic substitutes and strategic complements, and departing from previous literature, we do not assume particular functional forms on players' payoffs. By exploiting variational methods, we show that the uniqueness, the comparative statics, and the approximation of a Nash equilibrium are determined by a precise relationship between the lowest eigenvalue of the network, a measure of players' payoff concavity, and a parameter capturing the strength of the strategic interaction among players. We apply our framework to the study of aggregative network games, games of mixed interactions, and Bayesian network games.
From unintegrated gluon distributions to particle production in nucleon-nucleon collisions at RHIC energies
Creators: name: Szczurek, Antoni
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The inclusive distributions of gluons and pions are calculated with absolute normalization for high-energy nucleon-nucleon collisions. The results for several unintegrated gluon distributions from the literature are compared. The gluon distribution proposed recently by Kharzeev and Levin based on the idea of gluon saturation is tested against DIS data from HERA. We find huge differences in both rapidity and transverse momentum distributions of gluons and pions in nucleon-nucleon collisions for different models of unintegrated gluon distributions. The approximations used recently in the literature are discussed. The Karzeev-Levin gluon distribution gives extremely good description of momentum distribution of charged hadrons at midrapidities. Contrary to a recent claim in the literature, we find that the gluonic mechanism discussed does not describe the inclusive spectra of charged particles in the fragmentation region, i.e. in the region of large $|y|$ for any unintegrated gluon distribution from the literature.
description: 27 pages, 14 figures To appear in the special issue of Acta Physica Polonica to celebrate the 65th Birthday of Prof. Jan Kwiecinski
Three Paintings of the Madonna by Caravaggio
Creators: name: Friedl, Mark
name: Garrard, Mary D.
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3601
subject: Art history, theory and criticism

description: Research paper submitted to American University in partial fulfillment of the Degree of Master of Arts; approved as non-thesis option
Pituitary Adenom SRS Segmentation - Trained Model
Creators: name: Černý, Martin
name: May, Jaromír
name: Hamáčková, Lucie
name: Hallak, Hana
name: Novotný, Jozef
name: Barucic, Denis
name: Kybic, Jan
name: Májovský, Martin
name: Balasubramaniam, Neevya
name: Liščák, Roman
name: Netuka, David
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 320226
subject: Surgery
classificationCode: 320905
subject: Neurology and neuromuscular diseases

description: This is a code repository accompanying the article Utility of Artificial Intelligence in Radiosurgery for Pituitary Adenomas: A Deep Learning-Based Automated Segmentation Model with Evaluation of its Clinical UtilityČerný M., May J., Hamáčková L., Novotný J., Baručić D., Kybic J., Májovský M., Hallak H., Balasubramaniam N., Liščák R. and Netuka D.This program and/or it's parts are not intended for clinical use If zou use this code, please cite our articleUsage:This repository contains two nnU-net models for pituitary adenoma segmentation For general instructions on how to use nnU-net see here005 - uses coronal contrast-enhanced T1-weighted and coronal T2-weighted MRI scans as input 006 - uses coronal contrast-enhanced T1-weighted only as inputCopy these models to the results folder of nnU-net on your computerRun the inference by calling:nnUNetv2_predict -i [INPUT_FOLDER] -o [OUTPUT_FOLDER] -d 5 -c 3d_fullres -f 1
Please note that only fold 1 is trained
GC-02: Wet Chemistry-Synthesized Fe/Mixed Ferrite Soft Magnetic Composites for High-Frequency Power Conversion
Creators: Ward Burgess
Jagannath Devkota
Bret Howard
Publisher: name: IEEE
Year: 2023

Soft Magnetic Materials IV: Ferrites and Garnets

State-of-the-art soft magnetic (SM) alloy systems such as electrical steels and permalloys exhibit large eddy current losses at high frequency (kHz range and above), limiting their application in fast switching devices. Eddy current losses can be reduced for metallic alloys through a decrease in characteristic length scale or embedding them in an insulation layer. This work proposes the development of fine-scale core materials consisting of metallic SM nano/microparticles with inorganic insulation layers having magnetic phases and their synthesis using a wet chemistry-based scalable method for high-frequency and high-power applications. More specifically, a magnetic ferrite coating ( Ni0.5-xMnxZn0.5Fe2O4, x = 0.0 – 0.5) was applied via either (1) deposition of ferrite powder produced using a “wet chemistry-based” co-precipitation method, or (2) by means of a chemical reaction to a commercially available Fe-based microparticle substrate. Powder cores were synthesized by compaction of the synthesized composites. Relative magnetic permeability and core loss were measured at excitation frequencies up to 200 kHz. A core loss of 305 kW/m3 was measured at an excitation frequency of 100 kHz and magnetization of 0.02 T. This value is similar to the value of 199.3 kW/m3 reported in literature [1] at the same excitation conditions for a compact formed from Ni0.5Zn0.5Fe2O4-coated Fe microparticles (Figure 1). Scanning electron microscopy (SEM) was used to observe the microstructure of the core cross section, and X-ray diffraction (XRD) was employed to determine the effect of temperature on the integrity of the insulative ferrite layer. The effect of relative density and grain size on the core loss and relative magnetic permeability properties was also examined. The effect of ferrite coating techniques and post-processing by microwave annealing on core loss and relative magnetic permeability are being examined to potentially improve the loss properties.References: [1] Y. Peng, Y. Yi, L. Li, H. Ai, X. Wang and L. Chen. Fe-based Soft Magnetic Composites Coated with NiZn Ferrite Prepared by a Co-precipitation Method. J. Magn. Magn. Mater., Vol. 428, pp. 148-153 (2017).
Granular Architecture and Magnetics for Advanced Power Conversion-Slides
Creators: Minjie Chen
Publisher: name: IEEE
Year: 2024

PELS Webinar Slides

Abstract: Power electronics is a core technology for future energy systems. The performance and functionality of power electronics in these systems critically impact the sustainable development of human society. To leverage the advances in semiconductor devices and the scaling laws of passive components, a promising trend is to minimize the power conversion stress and maximize the passive component utilization through high-frequency operation and granular power conversion, while modernizing the modeling and control of distributed switching cells. In pursuit of this vision, this talk will first present the recent developments of power electronics at the chip edge, focusing on advanced DC-DC power architectures for energy-demanding high-performance computing. Various design considerations for hybrid-switched-capacitor CPU voltage regulators will be presented. We will then discuss high frequency, high control bandwidth power electronics. Methods for designing an efficient and fast multiphase interleaved power amplifier with control bandwidth higher than its switching frequency. Finally, we will introduce a large-scale open-source power magnetics research platform the MagNet (http://mag-net.princeton.edu), and the upcoming international power magnetics modeling challenge the MagNet Challenge to transform the modeling and design of complex power materials with advanced data-driven methods, such as artificial intelligence and machine learning.
Lattice Gauge Theory for a Quantum Computer
Creators: name: Brower, Richard C.
name: Berenstein, David
name: Kawai, Hiroki
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum link~\cite{Brower:1997ha} Hamiltonian was introduced two decades ago as an alternative to Wilson's Euclidean lattice QCD with gauge fields represented by bi-linear fermion/anti-fermion operators. When generalized this new microscopic representation of lattice field theories is referred as {\tt D-theory}~\cite{Brower:2003vy}. Recast as a Hamiltonian in Minkowski space for real time evolution, D-theory leads naturally to quantum Qubit algorithms. Here to explore digital quantum computing for gauge theories, the simplest example of U(1) compact QED on triangular lattice is defined and gauge invariant kernels for the Suzuki-Trotter expansions are expressed as Qubit circuits capable of being tested on the IBM-Q and other existing Noisy Intermediate Scale Quantum (NISQ) hardware. This is a modest step in exploring the quantum complexity of D-theory to guide future applications to high energy physics and condensed matter quantum field theories.
description: 7 pages , 5 figures, 37th International Symposium on Lattice Field Theory - Lattice2019, 16-22 June 2019, Wuhan, China
A Monte Carlo study of the forecasting performance of empirical SETAR models
Creators: name: Clementrs, Michael P.
name: Smith, Jeremy
name: Clementrs, Michael P.
name: Smith, Jeremy
Publisher: name: Unknown
Year: 1997
Subjects: Production Economics
Research Methods/ Statistical Methods

description: In this paper we investigate the multi-period forecast performance of a number of empirical selfexciting threshold autoregressive (SETAR) models that have been proposed in the literature for modelling exchange rates and GNP, amongst other variables. We take each of the empirical SETAR models in turn as the DGP to ensure that the ‘non-linearity’ characterises the future, and compare the forecast performance of SETAR and linear autoregressive models on a number of quantitative and qualitative criteria. Our results indicate that non-linear models have an edge in certain states of nature but not in others, and that this can be highlighted by evaluating forecasts conditional upon the regime.
Centrality dependence of global variables in relativistic heavy ion collisions: Final $p_{T}$ data analysis in the framework of a statistical model
Creators: name: Prorok, Dariusz
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The global variables like the transverse energy at midrapidity, the charged particle multiplicity at midrapidity and the total multiplicity of charged particles are evaluated in the single-freeze-out statistical model for different centrality bins at RHIC at $\sqrt{s_{NN}}=130$ and 200 GeV. Full description of decays of hadron resonances is applied in these estimations. The geometric parameters of the model are obtained from the fit to the final data on the $p_{T}$ spectra. The predicted values of the global variables agree qualitatively well with the experimental data. The centrality independence of the total number of charged particles per participant pair has been also reproduced.
description: Revtex, 12 figures (included), 16 pages. This is the revised final version accepted for publication in Physical Review C. The main difference with the first version is that the geometric parameters of the model have been fitted again with the use of the newer estimates of the statistical parameters reported in Refs. [20,21] for the case of $\sqrt{s_{NN}}=200$ GeV. Also because of the editorial reasons the title has been slightly changed
Early Dark Energy Does Not Restore Cosmological Concordance
Creators: name: Hill, J. Colin
name: McDonough, Evan
name: Toomey, Michael W.
name: Alexander, Stephon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Current cosmological data exhibit a tension between inferences of the Hubble constant, $H_0$, derived from early and late-universe measurements. One proposed solution is to introduce a new component in the early universe, which initially acts as "early dark energy" (EDE), thus decreasing the physical size of the sound horizon imprinted in the cosmic microwave background (CMB) and increasing the inferred $H_0$. Previous EDE analyses have shown this model can relax the $H_0$ tension, but the CMB-preferred value of the density fluctuation amplitude, $σ_8$, increases in EDE as compared to $Λ$CDM, increasing tension with large-scale structure (LSS) data. We show that the EDE model fit to CMB and SH0ES data yields scale-dependent changes in the matter power spectrum compared to $Λ$CDM, including $10\%$ more power at $k = 1~h$/Mpc. Motivated by this observation, we reanalyze the EDE scenario, considering LSS data in detail. We also update previous analyses by including $Planck$ 2018 CMB likelihoods, and perform the first search for EDE in $Planck$ data alone, which yields no evidence for EDE. We consider several data set combinations involving the primary CMB, CMB lensing, SNIa, BAO, RSD, weak lensing, galaxy clustering, and local distance-ladder data (SH0ES). While the EDE component is weakly detected (3$σ$) when including the SH0ES data and excluding most LSS data, this drops below 2$σ$ when further LSS data are included. Further, this result is in tension with strong constraints imposed on EDE by CMB and LSS data without SH0ES, which show no evidence for this model. We also show that physical priors on the fundamental scalar field parameters further weaken evidence for EDE. We conclude that the EDE scenario is, at best, no more likely to be concordant with all current cosmological data sets than $Λ$CDM, and appears unlikely to resolve the $H_0$ tension.
description: 40 pages, 24 figures. CLASS_EDE code publicly available at https://github.com/mwt5345/class_ede . MCMC chains are publicly available for download at https://users.flatironinstitute.org/~chill/H20_data/ . v3: minor bug fixed in BOSS likelihood; conclusions unchanged. Accepted for publication in Phys. Rev. D