cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discrete symmetries in the cluster shell model
Creators: name: Santana-Valdés, A. H.
name: Bijker, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The role of discrete (or point-group) symmetries is discussed in the framework of the Cluster Shell Model which describes the splitting of single-particle levels in the deformed field of cluster potentials. We discuss the classification of the eigenstates for the cases of a triangular and tetrahedral configuration of alpha-particles in terms of the irreducible representations of the double point groups D'(3h) and T'(d), respectively, and show how the discrete symmetry of a given eigenstate can be determined. Finally, we derive the Coriolis coupling for each one of these geometrical configurations.
description: 13 pages, 5 figures, 4 tables, to be published in EPJ-ST on "Symmetries in Atomic Nuclei. New Perspectives"
New Solutions to the Strong CP Problem
Creators: name: Hsu, S. D. H.
name: Sannino, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We exhibit a solution to the strong CP problem in which ultraviolet physics renders the QCD theta angle physically unobservable. Our models involve new strong interactions beyond QCD and particles charged under both the new interactions and ordinary color.
description: RevTex, 2-columns, 5 pages, 1 fig. Revised version, including additional discussion of the UV theory and the low-energy effective theory, to appear in Physics Letters B
Cohen-Host type idempotent theorems for representations on Banach spaces and applications to Figà-Talamanca-Herz algebras
Creators: name: Runde, Volker
Publisher: name: arXiv
Year: 2004
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 22D12; Secondary 22D05, 22D10, 43A07, 43A15, 43A30, 43A65, 46B08, 46B20, 46H20, 46H25, 46J10, 46J20, 46J40

description: Let $G$ be a locally compact group, and let ${\cal R}(G)$ denote the ring of subsets of $G$ generated by the left cosets of open subsets of $G$. The Cohen--Host idempotent theorem asserts that a set lies in ${\cal R}(G)$ if and only if its indicator function is a coefficient function of a unitary representation of $G$ on some Hilbert space. We prove related results for representations of $G$ on certain Banach spaces. We apply our Cohen--Host type theorems to the study of the Figà-Talamanca--Herz algebras $A_p(G)$ with $p \in (1,\infty)$. For arbitrary $G$, we characterize those closed ideals of $A_p(G)$ that have an approximate identity bounded by 1 in terms of their hulls. Furthermore, we characterize those $G$ such that $A_p(G)$ is 1-amenable for some -- and, equivalently, for all -- $p \in (1,\infty)$: these are precisely the abelian groups.
description: 20 pages; LaTeX2e; one reference exchanged
Pulse Control of Decoherence in a Qubit Coupled with a Quantum Environment
Creators: name: Murakami, Takahiro
name: Takane, Yositake
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the time evolution of a qubit linearly coupled with a quantum environment under a sequence of short pi pulses. Our attention is focused on the case where qubit-environment interactions induce the decoherence with population decay. We assume that the environment consists of a set of bosonic excitations. The time evolution of the reduced density matrix for the qubit is calculated in the presence of periodic short pi pulses. We confirm that the decoherence is suppressed if the pulse interval is shorter than the correlation time for qubit-environment interactions.
description: 5 pages, 2figures
Variance Reduction via Accelerated Dual Averaging for Finite-Sum Optimization
Creators: name: Song, Chaobing
name: Jiang, Yong
name: Ma, Yi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this paper, we introduce a simplified and unified method for finite-sum convex optimization, named \emph{Variance Reduction via Accelerated Dual Averaging (VRADA)}. In both general convex and strongly convex settings, VRADA can attain an $O\big(\frac{1}{n}\big)$-accurate solution in $O(n\log\log n)$ number of stochastic gradient evaluations which improves the best-known result $O(n\log n)$, where $n$ is the number of samples. Meanwhile, VRADA matches the lower bound of the general convex setting up to a $\log\log n$ factor and matches the lower bounds in both regimes $n\le Θ(κ)$ and $n\gg κ$ of the strongly convex setting, where $κ$ denotes the condition number. Besides improving the best-known results and matching all the above lower bounds simultaneously, VRADA has more unified and simplified algorithmic implementation and convergence analysis for both the general convex and strongly convex settings. The underlying novel approaches such as the novel initialization strategy in VRADA may be of independent interest. Through experiments on real datasets, we show the good performance of VRADA over existing methods for large-scale machine learning problems.
description: 19 pages, 12 figures
Additional file 5 of Bacteriophage genotyping using BOXA repetitive-PCR
Creators: name: Damnjanovic, Dragica
name: Vázquez-Campos, Xabier
name: Winter, Daniel L.
name: Harvey, Melissa
name: Bridge, Wallace J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 5 Sequenced phage fragments. This file provides the list of sequenced phage fragments and details relating to their analysis, including; the primers used for the amplification of selected phage genes; results from the second round of PCR amplifications and BLAST analyses that used gene-specific primers; and a figure showing PCR amplifications of the selected phage DNA fragments using the forward and reverse primer pair corresponding to the annotated genes in each phage.
Optical modulation at around 1550 nm in a InGaAlAs optical waveguide containing a InGaAs/AlAs resonant tunnelling diode
Creators: name: Figueiredo, J. M. L.
name: Boyd, A. R.
name: Stanley, C. R.
name: Ironside, C. N.
name: McMeekin, S. G.
name: Leite, A. M. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report electro-absorption modulation of light at around 1550 nm in a unipolar InGaAlAs optical waveguide containing a InGaAs/AlAs double-barrier resonant tunneling diode (DB-RTD). The RTD peak-to-valley transition increases the electric field across the waveguide, which shifts the core material absorption band-edge to longer wavelengths via the Franz-Keldysh effect, thus changing the light-guiding characteristics of the waveguide. Low-frequency characterisation of a device shows modulation up to 28 dB at 1565 nm. When dc biased close to the negative differential conductance (NDC) region, the RTD optical waveguide behaves as an electro-absorption modulator integrated with a wide bandwidth electrical amplifier, offering a potential advantage over conventional pn modulators.
description: 11 pages
Developing a Performance Assessment Methodology to Measure the Integration of Environmental Sustainability in R&D: The Case of Food Manufacturing Companies in the Philippines
Creators: name: Recaido, Ralph Josh
Publisher: name: Zenodo
Year: 2025

description: Abstract

Food manufacturing companies hold a crucial position in advancing environmental sustainability through their corporate social responsibility and operational strategies. Efforts to integrate sustainability into daily operations are emerging as a strategic priority, especially for food companies and their R&D teams that operate in the Philippines. This study explores how R&D/PD functions in Philippine food companies incorporate environmental sustainability into their product development processes and proposes a standardized performance assessment procedure to evaluate these efforts. Using the Delphi method, insights from 10 R&D Managers from foodservice, FMCG/CPG, raw materials, and manufacturing companies identified four key stages of the R&D/PD process: Conceptualization, Development, Planning, and Commercialization. Each stage was found to require specific competencies and outputs. Using Soares’ et al. (2024) list of environmental sustainability practices in project management, practices were prioritized and weighted using a Likert scale to develop a scoring system. A descriptive performance rubric was integrated to evaluate R&D personnel and projects. By virtue of universal consensus amongst all the panelists, an overall performance assessment tool was developed.

The results highlight that while environmental sustainability practices are recognized as foundational requirements within R&D/PD projects, a structured performance assessment framework enables R&D/PD managers to quantify and drive sustainability efforts effectively across the whole process. This framework provides an actionable tool to foster green innovation, improve decision-making, and align R&D strategies with organizational and global sustainability goals in the food industry.
Comparing Welfare Estimates from Fixed Status Quo Attributes vs People’s Perceived Attributes of Water Quality
Creators: name: Marsh, Dan
name: Mkwara, Lena Asimenye
name: Marsh, Dan
name: Mkwara, Lena Asimenye
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Health Economics and Policy
subject: Land Economics/Use
subject: Choice experiments
subject: Fixed status quo
subject: People’s perceived status quo
subject: Willingness to pay

description: Data from a choice experiment on the community’s preferences for water quality improvements in streams was used to assess the effect of using a fixed status quo versus people’s perceived status quo on willingness to pay values. More than 50% of respondents perceived the quality of water in streams to be different to the status quo in the initial experimental design. Study results have shown that respondents who opted for their own perceived status quo alternative had stronger preferences and higher willing to pay for water quality improvements than their counterparts.
Islam in France and Britain : the Hijab as a point of contention
Creators: name: Lobo, Anjali Da Victoria
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines the wearing of the hijab as a means of situating the current debates in and around Islam in contemporary Europe, in particular, the France and Britain. As a visible symbol of Islam the hijab resonates with multiple meanings within and outside the Muslim community and offers up a gendered and spiritual representation of identity. By its predominance in the discourse of immigration in Europe, the hijab is the site of diversity that the European state(s) must navigate around. In probing the wearing of hijab, this research ponders what new constructs of identity are taking place within Britain and France and what role does the media and current discourses on Islam (in Europe etc, pre and post-Sept 11th) play in shaping of the subject? And as much as Europe's landscape is altered by Islam, the paper also investigates how Islamic and Islam communities are affected by a -whole generation's presences in Europe. This thesis looks at developments within Islam and argues that through a coalescing of Islamic thought, based on a growing transnationalism and a revitalization of the concept of the umma, a new Islamic identity is emerging possibly parallel to but not necessarily contradictory to the nation state.
Efficient design for willingness to pay in choice experiments: evidence from the field
Creators: name: Kerr, Geoffrey N.
name: Sharp, Basil M.H.
name: Kerr, Geoffrey N.
name: Sharp, Basil M.H.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: experimental design
subject: choice experiment
subject: efficiency

description: Efficient experimental designs offer the potential to reduce confidence intervals for parameters of interest in choice models, or to reduce required sample sizes. C-efficiency recognizes the salience of willingness to pay estimates rather than utility function parameters. This study reports on a choice model application that incorporated updated statistical designs based on initial responses in order to maximize C-efficiency. The revised design delivered significant improvements.
Additional file 6 of Bacteriophage genotyping using BOXA repetitive-PCR
Creators: name: Damnjanovic, Dragica
name: Vázquez-Campos, Xabier
name: Winter, Daniel L.
name: Harvey, Melissa
name: Bridge, Wallace J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 6 Sanger sequencing of the BOXA-PCR fragments. This file provides the alignment of the sequencing of the PCR products to the sequences of the corresponding proteins.
Evaluating North American Electric Grid Reliability Using the Barabasi-Albert Network Model
Creators: name: Chassin, David P.
name: Posse, Christian
Publisher: name: arXiv
Year: 2004
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The reliability of electric transmission systems is examined using a scale-free model of network structure and failure propagation. The topologies of the North American eastern and western electric networks are analyzed to estimate their reliability based on the Barabasi-Albert network model. A commonly used power system reliability index is computed using a simple failure propagation model. The results are compared to the values of power system reliability indices previously obtained using standard power system reliability analysis methods, and they suggest that scale-free network models are useful for estimating aggregate electric network reliability.
description: 10 pages, 2 figures, 3 tables, accepted by Physica A in March 2005
Additional file 3 of Bacteriophage genotyping using BOXA repetitive-PCR
Creators: name: Damnjanovic, Dragica
name: Vázquez-Campos, Xabier
name: Winter, Daniel L.
name: Harvey, Melissa
name: Bridge, Wallace J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 3 Statistical analysis of the BOXA-PCR for phage fingerprinting. This file provides the details of the statistical analysis of the reproducibility testing.
Role of Large Gluonic Excitation Energy for Narrow Width of Penta-Quark Baryons in QCD String Theory
Creators: name: Suganuma, Hideo
name: Okiharu, Fumiko
name: Takahashi, Toru T.
name: Ichie, Hiroko
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the narrow decay width of low-lying penta-quark baryons in the QCD string theoryin terms of gluonic excitations. In the QCD string theory, the penta-quark baryon decays via a gluonic-excited state of a baryon and meson system, where a pair of Y-shaped junction and anti-junction is created. Since lattice QCD shows that the lowest gluonic-excitation energy takes a large value of about 1 GeV, the decay of the penta-quark baryon near the threshold is considered as a quantum tunneling process via a highly-excited state (a gluonic-excited state) in the QCD string theory. This mechanism strongly suppresses the decay and leads to an extremely narrow decay width of the penta-quark system.
description: Talk given at International Conference on the Structure of Baryons (Baryons 04) October 25 - 29, 2004, Ecole Polytechnique, Palaiseau, France
Using Ethnographic Decision Tree Modelling to Explore Farmers’ Decision-making Processes: a Case Study
Creators: name: Roth, Hein
name: Botha, Neels
name: Roth, Hein
name: Botha, Neels
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: Land Economics/Use
subject: Erosion
subject: hill country farmers
subject: EDTM
subject: Whole Farm Plan
subject: decision-making model

description: Agriculture is the foundation of the Manawatu/Wanganui region’s economy, which consists of 300,000 ha of highly erodible land. Past land management practices caused a major threat to the long-term sustainability of the region. Horizons Regional Council introduced Whole Farm Plans (WFP) as part of a variety of tools to protect and conserve the land. This paper discusses the progressive findings of a study about farmers’ WFP adoption decisions. Following Gladwin’s (1989) ethnographic decision tree modeling (EDTM) approach, qualitative interviews were held with a sample of 15 WFP adopters and 14 non-adopters across the Region to develop the adoption decision tree. Key findings were that hill country farmers’ decision to develop, or not develop, a WFP was based on six fundamental criteria: (1) their awareness and concern of the issues of soil erosion and water quality and/or siltation of rivers and streams in the region and/or their farm; (2) the degree to which retiring land on their farm by fencing and tree planting would help solve the issue; (3) the degree to which the current status and level of development of the farm still allowed for further fencing and/or tree planting; (4) perceived benefit of the plan; (5) consideration of the enabling/disabling factors, which included the willingness to invest time, effort, and capital in the development and implementation of the plan.
Poisson Receivers: a Probabilistic Framework for Analyzing Coded Random Access
Creators: name: Yu, Che-Hao
name: Huang, Lin
name: Chang, Cheng-Shang
name: Lee, Duan-Shin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we develop a probabilistic framework for analyzing coded random access. Our framework is based on a new abstract receiver (decoder), called a Poisson receiver, that is characterized by a success probability function of a tagged packet subject to a Poisson offered load. We show that various coded slotted ALOHA (CSA) systems are Poisson receivers. Moreover, Poisson receivers have two elegant closure properties: (i) Poisson receivers with packet routing are still Poisson receivers, and (ii) Poisson receivers with packet coding are still Poisson receivers. These two closure properties enable us to use smaller Poisson receivers as building blocks for analyzing a larger Poisson receiver. As such, we can analyze complicated systems that are not possible by the classical tree evaluation method. In particular, for CSA systems with both spatial diversity and temporal diversity, we can use the framework of Poisson receivers to compute the exact (asymptotic) throughput. We demonstrate that our framework can be used to provide differentiated services between ultra-reliable low-latency communication (URLLC) traffic and enhanced mobile broadband (eMBB) traffic. By conducting extensive simulations, we also verify that our theoretical results match extremely well with the simulation results.
Additional file 4 of Bacteriophage genotyping using BOXA repetitive-PCR
Creators: name: Damnjanovic, Dragica
name: Vázquez-Campos, Xabier
name: Winter, Daniel L.
name: Harvey, Melissa
name: Bridge, Wallace J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 4 Influence of the propagating temperature and propagating host on the phage profile. This file provides the BOXA2R-PCRfingerprint profiles of lactococcal phages 712 and P087, which show the influence of the propagating temperature and their hosts on pattern reproducibility.
The Value of Inherent Soil Characteristics: A Hedonic Analysis
Creators: name: Samarasinghe, Oshadhi
name: Greenhalgh, Suzie
name: Samarasinghe, Oshadhi
name: Greenhalgh, Suzie
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Land Economics/Use
subject: Natural capital
subject: soil characteristics
subject: value of soil
subject: hedonic prices
subject: rural land value

description: In an attempt to value soil natural capital, we use the inherent characteristics of soil and land valuation data to examine the relationship between soil characteristics and rural farmland values in the 6000ks2 Manawatu catchment in New Zealand. The study applies a hedonic pricing method to determine if the value of ‘critical’ inherent characteristics of soils are reflected in land values. We find empirical evidence that the examined characteristics of soil natural capital stock, e.g., particle size, drainage, potential rooting depth and profile available water, are in fact reflected in rural land values.
Introducing "bleed": a theoretical framework for video game analysis
Creators: name: Sims, Rachel
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: This thesis establishes the theory of ‘bleed’ as an alternative means of conceptualising the relationship between video game player and game-world. At present, bleed is currently a theoretically underdeveloped concept, with existing scholarship identifying two key features: the first, that bleed is a design principle, and the second, that bleed is an emotional investment between player and character. As a result, I argue that bleed is instrumental to understanding the way players form their beliefs and values, and how this in turn informs their behaviour in a game-internal and game-external context. To do this, existing theories of ideology, ethics, and performativity are used, demonstrating bleed’s value in the way it allows for a multipronged analysis of the process players undergo in the formation of their beliefs and values. This is combined with the textual analysis of CD Project Red’s The Witcher franchise to explore bleed as a functional theoretical framework through a concrete example, drawing on a single quest or paratext from each of the three games that comprise the franchise. This research establishes bleed as a unique theoretical framework to be adopted by video game studies, offering a viable alternative to existing media studies approaches to video game analysis.
Additional file 2 of Bacteriophage genotyping using BOXA repetitive-PCR
Creators: name: Damnjanovic, Dragica
name: Vázquez-Campos, Xabier
name: Winter, Daniel L.
name: Harvey, Melissa
name: Bridge, Wallace J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 2 List of phages used in the reproducibility study. This data outlines the phages used in the study, which strain they were propagated on, and the culture conditions.
Multi-scalar black holes with contingent primary hair: Mechanics and stability
Creators: name: Mignemi, S.
name: Wiltshire, D. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We generalize a class of magnetically charged black holes holes non-minimally coupled to two scalar fields previously found by one of us [gr-qc/9910041] to the case of multiple scalar fields. The black holes possess a novel type of primary scalar hair, which we call a contingent primary hair: although the solutions possess degrees of freedom which are not completely determined by the other charges of the theory, the charges necessarily vanish in the absence of the magnetic monopole. Only one constraint relates the black hole mass to the magnetic charge and scalar charges of the theory. We obtain a Smarr-type thermodynamic relation, and the first law of black hole thermodynamics for the system. We further explicitly show in the two-scalar-field case that, contrary to the case of many other hairy black holes, the black hole solutions are stable to radial perturbations.
description: 10 pages, RevTeX4, 6 figures, graphicx. v2: Substantial new sections and results added from authors' joint unpublished manuscript dated 2000, doubling the length of the paper. v3: references added. v4: Small additions (extra figures etc) to agree with published version
Estimating and projecting flows of greenhouse gases for New Zealand agriculture and planted forests
Creators: name: Austin, Darran
name: Rivas Palma, Rosa Maria
name: Austin, Darran
name: Rivas Palma, Rosa Maria
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Industrial Organization
subject: International Relations/Trade
subject: Land Economics/Use
subject: greenhouse gas emissions
subject: agriculture
subject: planted forests

description: New Zealand is atypical among the Annex I parties within the Kyoto Protocol with agriculture forming a large part of greenhouse gas emissions and planted forests sequestering large amounts of carbon. This presentation will summarise the methods and data used to estimate flows of greenhouse gases within agriculture and planted forests in New Zealand’s National Inventory Report submission to the United Nations Framework Convention on Climate Change last April. 2009 projections for the first commitment period of the Kyoto Protocol (2008-2012) will also be presented and discussed.
Constraints on low-energy effective theories from weak cosmic censorship
Creators: name: Chen, Baoyi
name: Lin, Feng-Li
name: Ning, Bo
name: Chen, Yanbei
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the weak cosmic censorship conjecture (WCCC) for the extremal charged black hole in possible generalizations of Einstein-Maxwell theory due to the higher order corrections, up to fourth-derivative terms. Our derivation is based on Wald's gedanken experiment to destroy an extremal black hole. We find that, provided the null energy condition for the falling matter, the WCCC is preserved for all possible generalizations. Thus, the WCCC cannot serve as a constraint to the higher order effective theories. We also show that up to first order variations of black hole mass and charge, WCCC is preserved for non-rotating extremal black holes in all $n$-dimensional diffeomorphism-covariant theories of gravity and $U(1)$ gauge field.
description: 22 pages, 2 figures
Topological transitions in electronic spectra: Crossover between Abrikosov and Josephson vortices
Creators: name: Samokhvalov, A. V.
name: Plastovets, V. D.
name: Mel'nikov, A. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The electronic structure of a vortex line trapped by a planar defect in a type-II superconductor is analyzed within the Bogoliubov-de Gennes theory. The normal reflection of electrons and holes at the defect plane results in the topological transition in the spectrum and formation of a new type of quasiparticle states skipping or gliding along the defect. This topological transition appears to be a hallmark of the initial stage of the crossover from the Abrikosov to the Josephson vortex type revealing in the specific behavior of the quantized quasiparticle levels and density of states. The increase in the resulting hard and soft gaps affects the vortex mobility along the defect plane and splitting of the zero bias anomaly in the tunneling spectral characteristics.
description: 11 pages, 8 figures
Formation and growth of skyrmion crystal phase in a frustrated Heisenberg antiferromagnet with Dzyaloshinskii-Moriya interaction
Creators: name: Mohylna, M.
name: Žukovič, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the formation and growth of a skyrmion crystal (SkX) phase in a frustrated antiferromagnetic Heisenberg model on a triangular lattice with Dzyaloshinskii-Moriya interaction (DMI) in the presence of an external magnetic field. We build phase diagrams in the temperature-field parameter plane, featuring first-order phase transitions and tricritical points, and study their evolution with the increasing DMI strength. It is found that already relatively small DMI intensity can lead to the appearance of the SkX phase at low temperatures in the vicinity of the meeting point of the remaining helical, coplanar up-up-down, and vortical-like ordered phases. By means of a parallel tempering (PT) Monte Carlo algorithm we find that the minimum value of DMI, at which the skyrmion phase emerges, $D_t \approx 0.02$, is one order of magnitude smaller then previously reported. We demonstrate the efficiency of PT in reliable and precise location of the phase boundaries between different phases separated by either very large (strong first-order transition) or barely detectable energy barriers, where the standard Monte Carlo approach may easily fail to find a stable solution.
description: 22 pages, 9 figures
Provable Convergence of Plug-and-Play Priors with MMSE denoisers
Creators: name: Xu, Xiaojian
name: Sun, Yu
name: Liu, Jiaming
name: Wohlberg, Brendt
name: Kamilov, Ulugbek S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Plug-and-play priors (PnP) is a methodology for regularized image reconstruction that specifies the prior through an image denoiser. While PnP algorithms are well understood for denoisers performing maximum a posteriori probability (MAP) estimation, they have not been analyzed for the minimum mean squared error (MMSE) denoisers. This letter addresses this gap by establishing the first theoretical convergence result for the iterative shrinkage/thresholding algorithm (ISTA) variant of PnP for MMSE denoisers. We show that the iterates produced by PnP-ISTA with an MMSE denoiser converge to a stationary point of some global cost function. We validate our analysis on sparse signal recovery in compressive sensing by comparing two types of denoisers, namely the exact MMSE denoiser and the approximate MMSE denoiser obtained by training a deep neural net.
A top-down scenario for the formation of massive Tidal Dwarf Galaxies
Creators: name: Duc, Pierre-Alain
name: Bournaud, Frederic
name: Masset, Frederic
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Among those objects formed out of collisional debris during galaxy mergers, the prominent gaseous accumulations observed near the tip of some long tidal tails are the most likely to survive long enough to form genuine recycled galaxies. Using simple numerical models, Bournaud, Duc & Masset (2003) claimed that tidal objects as massive as 10^9 Msun could only form, in these simulations, within extended dark matter (DM) haloes. We present here a new set of simulations of galaxy collisions to further investigate the structure of tidal tails. First of all, we checked that massive objects are still produced in full N-body codes that include feedback and a large number of particles. Using a simpler N-body code with rigid haloes, we noticed that dissipation and self-gravity in the tails, although important, are not the key factors. Exploiting toy models, we found that, for truncated DM haloes, material is stretched along the tail, while, within extended haloes, the tidal field can efficiently carry away from the disk a large fraction of the gas, while maintaining its surface density to a high value. This creates a density enhancement near the tip of the tail. Only later-on, self-gravity takes over; the gas clouds collapse and start forming stars. Thus, such objects were fundamentally formed following a kinematical process, according to a top-down scenario, contrary to the less massive Super Star Clusters that are also present around mergers. This conclusion leads us to introduce a restrictive definition for Tidal Dwarf Galaxies (TDGs) and their progenitors, considering only the most massive ones, initially mostly made of gas, that were able to pile up in the tidal tails. More simulations will be necessary to precisely determine the fate of these proto--TDGs and estimate their number.
description: 13 pages, 11 figures, accepted for publication in A&A
ILM-FAN VA INNOVATSION TEXNOLOGIYALARDA ZAMONAVIY MUAMMOLAR VA YECHIMLAR
Creators: name: Asadullayeva, Nargiza
Publisher: name: Zenodo
Year: 2025

description: Ilm-fan va innovatsion texnologiyalar sohasidagi jadal rivojlanish jamiyat hayotining barcha jabhalariga ijobiy ta’sir ko‘rsatmoqda, ammo bu jarayon bir qator zamonaviy muammolarni ham keltirib chiqarmoqda. Ushbu ishda atrof-muhitni muhofaza qilish, sun’iy intellektdan foydalanishdagi axloqiy masalalar, genetik muhandislikning ijtimoiy oqibatlari kabi dolzarb muammolar ko‘rib chiqiladi. Shu bilan birga, qayta tiklanuvchi energiya manbalaridan foydalanish, adolatli tartibga solish tizimlarini yaratish va fanlararo yondashuvlarni qo‘llash kabi samarali yechimlar tahlil qilinadi. Tadqiqotda global hamkorlikning ahamiyati va texnologik savodxonlikni oshirish zarurati ta’kidlanadi, shuningdek, innovatsiyalar insoniyat manfaatiga xizmat qilishi uchun xavf-xatarlarni kamaytirish usullari ko‘rsatiladi.
Comparative Performance of Organic, Conventional, and Integrated Producers in New Zealand
Creators: name: Greer, Glen
name: Kaye-Blake, William
name: Hunt, Lesley
name: Greer, Glen
name: Kaye-Blake, William
name: Hunt, Lesley
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: economic performance
subject: organic farming
subject: management system

description: The Agriculture Research Group on Sustainability (ARGOS) monitors a wide ange of environmental, social, economic and management parameters on matched cohorts of organic, conventional and integrated farms in the sheep/beef and kiwifruit sectors. Over six years significant differences have been found in farm costs and revenues between management systems, but few differences have been identified between management systems in “bottom-line” indicators of profitability, and there is greater variability within cohorts than between them. Regrouping of the properties according to farmer typologies does, however, result in the identification of some significant differences in economic outcomes between different “types” of farmers.
Analysis of Environmental and Economic Efficiency: Application of the Overseer model and simulated data
Creators: name: Ramilan, Thiagarajah
name: Scrimgeour, Frank G.
name: Marsh, Dan
name: Ramilan, Thiagarajah
name: Scrimgeour, Frank G.
name: Marsh, Dan
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Research Methods/ Statistical Methods
subject: Data Envelopment Analysis
subject: Economic
subject: Efficiency
subject: Environment

description: New Zealand’s success in raising agricultural productivity has been accompanied by higher input use, leading to adverse effects on the environment. Until recently, analysis of farm performance has tended to ignore such negative externalities. The current emphasis on environmental issues has led dairy farmers to target improvements in both environmental performance and productivity. Therefore measuring the environmental performance of farms and integrating this information into farm productivity calculations should assist informed policy decisions which promote sustainable development. However this is a challenging process since conventional environmental efficiency measures are usually based on simple input and output flows but nitrogen discharge is a complex process which depends on climate variability, pasture and cow physiology and geophysical variability. Furthermore the outdoor, pastoral nature of New Zealand farming means that it is difficult to control input and output flows, particularly of nitrogen. Therefore this paper proposes a novel approach to measure environmental and economic efficiency of farms using the Overseer nutrient budget model and a spatially micro-simulated virtual population data. Empirical analysis is based on dairy farms in the Karapiro catchment, where nitrogen discharge from dairy farming is major source of nonpoint pollution.
Strathcona wetlands : engaged ecology in Vancouver’s inner city
Creators: name: Tracey, David
Publisher: name: University of British Columbia
Year: 2009

description: This project explores the potential to create wilderness in urban areas through design. It uses one small inner-city site to look at the larger picture of how we might bridge the gap between nature and development to create more livable cities while also enhancing the environment. Research into past notions on the loss of nature-based experiences in cities led to a hypothesis that people need "wilderness," or "place where the wild is found,"' no matter where they live. Vancouver's inner-city area known us the "Downtown Eastside" was selected for a design location as it is an urbanized district bearing the brunt of the city's social problems. It also contains an innovative community-managed park site with a "wild habitat" zone which the site's managers presently consider unsuccessful. Analysis at the regional (city), local (district) and site (park) levels establishes the foundations on which an effective urban wilderness site might be designed. Design criteria are introduced to judge the proposed intervention, creating a template which could be applied as well to future proposals on this or other sites. Finally, a design for the site is proposed to I) increase the diversity and population of wildlife by enhancing and adding habitat areas including a year-round wetland 2) provide nature-based opportunities for more people by transforming areas presently used for street-involved illegal activity and 3) highlight the site's importance in a habitat link from the shoreline at False Creek through built areas of East Vancouver.
Alveográfos mérések az őszi búza minőségvizsgálatában
Creators: name: Pongraczne Barancsi, Agnes
name: Pongraczne Barancsi, Agnes
Publisher: name: Unknown
Year: 2010
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: őszi búza
subject: Chopin alveográf
subject: sütőipar
subject: W érték
subject: P/Lérték
subject: winter wheat
subject: Copin alveograph
subject: baking industry
subject: W value
subject: P/Lvalue.

description: Magyarországon az utóbbi néhány évben kardinális szerepet kap a jó minőségű búza előállítása, mely mind elméletében, mind gyakorlatában jelentős felkészültséget igényel. Az őszi búza minőségvizsgálatakor elsősorban a külföldi, de egyre gyakrabban a hazai vásárlók is igénylik az alveográfos paraméterek megadását is. A „Pannon” minőségnek fontos paraméterei az alveográfos W és P/Lértékek. Acsekély számú hazai és külföldi szakirodalmi adatok, valamint saját tapasztalataink és vevőink igénye alapján alveográfos sütőipari kategóriákat állítottunk fel. Az osztályozás fontosságát az adta, hogy a vizsgált évek klimatikusan teljesen eltérőek voltak. Afajták eredményei tükrözik, illetve magukban foglalják a fajták eltérő évjáratban kifejeződött minőségét is. ----------------------------------------------------------------- We have to know what kind of new, untraditional quality parameters should be used in Hungary to satisfy both the costumers of the European Union and the export market. The ambition of importers is shown by the increased need of certain suppliers and costumers for W and P/L values of dough. The gluten examination test is a dominant part of the quality inspection of winter wheat in Hungary. It has its own reasons and traditions. If we focus innovation on the rheological characteristics, Hungary can enter the single wheat market of the EU with special Hungarian wheat and stabilised good quality. As market conditions are shaped by the costumers in both the EU and in Hungary research and innovation are often targeted to them. In Hungary, more and more laboratories are equipped with alveographs. It is important to provide correct and fast specification of the claimed parameters. We need to find more information about the alveographical parameters of winter wheat varieties and the qualification of export rate and we have to select special quality types for wheat growing.
Rare earth engineering in RMn$_6$Sn$_6$ topological kagome magnets
Creators: name: Ma, Wenlong
name: Xu, Xitong
name: Yin, Jia-Xin
name: Yang, Hui
name: Zhou, Huibin
name: Cheng, Zi-Jia
name: Huang, Yuqing
name: Qu, Zhe
name: Wang, Fa
name: Hasan, M. Zahid
name: Jia, Shuang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Exploration of the topological quantum materials with electron correlation is at the frontier of physics, as the strong interaction may give rise to new topological phases and transitions. Here we report that a family of kagome magnets RMn$_6$Sn$_6$ manifest the quantum transport properties analogical to those in the quantum-limit Chern magnet TbMn$_6$Sn$_6$. The topological transport in the family, including quantum oscillations with nontrivial Berry phase and large anomalous Hall effect arising from Berry curvature field, points to the existence of massive Dirac fermions. Our observation demonstrates a close relationship between rare-earth magnetism and topological electron structure, indicating the rare-earth elements can effectively engineer the Chern quantum phase in kagome magnets.
description: 5 pages, 4 figures, 1 table
Stochastic reserving with a stacked model based on a hybridized Artificial Neural Network
Creators: name: Ramos-Pérez, Eduardo
name: Alonso-González, Pablo J.
name: Núñez-Velázquez, José Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Risk Management (q-fin.RM)
subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business
subject: 62-07, 62P05, 65C60, 90-08

description: Currently, legal requirements demand that insurance companies increase their emphasis on monitoring the risks linked to the underwriting and asset management activities. Regarding underwriting risks, the main uncertainties that insurers must manage are related to the premium sufficiency to cover future claims and the adequacy of the current reserves to pay outstanding claims. Both risks are calibrated using stochastic models due to their nature. This paper introduces a reserving model based on a set of machine learning techniques such as Gradient Boosting, Random Forest and Artificial Neural Networks. These algorithms and other widely used reserving models are stacked to predict the shape of the runoff. To compute the deviation around a former prediction, a log-normal approach is combined with the suggested model. The empirical results demonstrate that the proposed methodology can be used to improve the performance of the traditional reserving techniques based on Bayesian statistics and a Chain Ladder, leading to a more accurate assessment of the reserving risk.