cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Influence of small run-off HPPs in the Sreden Iskar river section (Iskar River, Bulgaria) on the benthic macroinvertebrate communities – preliminary study results
Creators: name: Taseva Mila
name: Vidinova Yanka
Publisher: name: Zenodo
Year: 2021

description: The effect of three small run-off hydro-power plants (HPPs) situated in the middle part of the Iskar River on the benthic macroinvertebrate communities was studied in 2019 and 2020. The diversity of the main benthic groups and their abundance at five sampling points along the river following the gradient of hydromorphological disturbance were traced. More than 75 taxa of species level, belonging to 15 systematic groups and 44 families were identified. The most diverse groups were Trichoptera (19 taxa), Diptera (17 taxa), Gastropoda (11 taxa) and Ephemeroptera (10 taxa). With a smallest number of species were the orders of Isopoda and Neuroptera, each presented by one species. For the study period the macroinvertebrate communities were very abundant. The groups with the highest number of specimens in total were: Diptera – 10092, Ephemeroptera – 8045, Trichoptera – 7500 and Gastropoda – 1368.
Triple bottom line assessment of sustainability art contest
Creators: name: Kwuen, Joseph
name: Furuya, Noriko
name: Okhiria, Sega
name: Abuassonon, Osama
Publisher: name: The University of British Columbia
Year: 2012

description: The new Student Union Building (SUB) at the University of British Columbia (UBC) is seeking to decorate its atrium with sustainable art pieces. The piece is intended to raise sustainability awareness among UBC students. Original plan to obtain such art piece was by commissioning a professional artist. This paper challenges this plan. In this paper a triple bottom-line analysis is conducted on the process of obtaining these art pieces by administering a student art contest. In the social aspect of the analysis it is clear that the art contest possesses many benefits over the traditional means; creation of jobs, engagement of students, as well as having the side benefit of promoting the art department at UBC. The waste disposal hierchy which includes: reduce, reuse and recycle are assessed for the commonly thrown away sustainable garbage chosen from the survey and observations of garbage bins in UBC campus. From this analysis, any recyclable material should be promoted to be recycled and reduce wastes which are difficult to recycle, such as plastics and electronic wastes. The last aspect of the analysis is Economic. In this section we gather cost estimates of commissioning a professional artist to create the artwork and compare this to estimates of the costs of the art contest. In the case of the art contest we are able to recover most (if not all) of the money spent. From the triple bottom-line analysis of administering a student art contest as a means to obtaining sustainable art pieces for the atrium of the SUB we see that this method not only costs less, but it also does more to raise awareness as it allows students to participate and be active in the process as opposed to being passive. Therefore we recommend going the route of a student art contest in place of commissioning a professional artist. 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.”
The Economic Value of Situation and Outlook Programs: A Review of Theory and Empirical Evidence
Creators: name: Irwin, Scott H.
name: Irwin, Scott H.
Publisher: name: Unknown
Year: 1994
Subjects: Public Economics
Teaching/Communication/Extension/Profession

description: Public situation and outlook (S&O) programs have a relatively long history. The first formal program is generally thought to be the USDA's Outlook Conference held on April 20, 1923. Since that time, S&O programs have expanded considerably in scope, both at the federallevel under the auspices of the USDA and at the state-level within land-grant colleges of agriculture. The objectives of public S&O programs probably have not changed a great deal over time. In 1930, H.R. Tolley suggested a purpose statement that, in my view, is still relevant today, "One of the primary objectives of outlook work has been, and probably will continue to be, to obtain and make available to farmers information that will be helpful to them in planning their production programs so as to obtain the greatest returns for their efforts and resources" (p.523). In recent years, the economic value of public S&O programs is being increasingly questioned. I believe there are two main reasons for the reappraisal of the value of these programs. The first is the growth of private firms that provide relatively low-cost market information and analysis services of the type traditionally provided by public programs.' The surge in private activity is related to the rapidly declining cost of gathering, processing, and distributing information. It is argued that public S&O programs can be downsized because private information providers are now available to perform the functions historically provided by public programs (e.g., Just 1983). • The second reason is the intellectual challenge provided by rational expectations theory. Briefly, if producers have rational expectations, then they make optimal use of all available information and do not make systematic forecasting mistakes. Hence, social welfare cannot be increased by providing producers with "better" price and quantity forecasts, as producers already make optimal forecasts. In this paper, I will explore the recent challenges to S&O programs. In the first part of the paper, theoretical arguments regarding the economic value of S&O programs will be discussed. Three theoretical frameworks will be examined: (1) a cobweb model, (2) a rational expectations model, and (3) a rational expectations model with learning and costly information. In the second part of the paper, the direct empirical evidence on the economic value of S&O programs will be reviewed.
title: Independent Learning Approaches: Overcoming Multi-Agent Learning Pathologies In Team-Games
Creators: name: Palmer, Gregory
Publisher: name: University of Liverpool Repository
Year: 2020

description: Deep Neural Networks enable Reinforcement Learning (RL) agents to learn behaviour policies directly from high-dimensional observations. As a result, the field of Deep Reinforcement Learning (DRL) has seen a great number of successes. Recently the sub-field of Multi-Agent DRL (MADRL) has received an increased amount of attention. However, considerations are required when using RL in Multi-Agent Systems. For instance Independent Learners (ILs) lack the convergence guarantees of many single-agent RL approaches, even in domains that do not require a MADRL approach. Furthermore, ILs must often overcome a number of learning pathologies to converge upon an optimal joint-policy. Numerous IL approaches have been proposed to facilitate cooperation, including hysteretic Q-learning (Matignon et al., 2007) and leniency (Panait et al., 2006). Recently LMRL2, a variation of leniency, proved robust towards a number of pathologies in low-dimensional domains, including miscoordination, relative overgeneralization, stochasticity, the alter-exploration problem and the moving target problem (Wei and Luke, 2016). In contrast, the majority of work on ILs in MADRL focuses on an amplified moving target problem, caused by neural networks being trained with potentially obsolete samples drawn from experience replay memories. In this thesis we combine advances from research on ILs with DRL algorithms. However, first we evaluate the robustness of tabular approaches along each of the above pathology dimensions. Upon identifying a number of weaknesses that prevent LMRL2 from consistently converging upon optimal joint-policies we propose a new version of leniency, Distributed-Lenient Q-learning (DLQ). We find DLQ delivers state of the art performances in strategic-form and Markov games from Multi-Agent Reinforcement Learning literature. We subsequently scale leniency to MADRL, introducing Lenient (Double) Deep Q-Network (LDDQN). We empirically evaluate LDDQN with extensions of the Cooperative Multi-Agent Object Transportation Problem (Bucsoniu et al., 2010), finding that LDDQN outperforms hysteretic deep Q-learners in domains with multiple dropzones yielding stochastic rewards. Finally, to evaluate deep ILs along each pathology dimension we introduce a new MADRL environment: the Apprentice Firemen Game (AFG). We find lenient and hysteretic approaches fail to consistently learn near optimal joint-policies in the AFG. To address these pathologies we introduce Negative Update Intervals-DDQN (NUI-DDQN), a MADRL algorithm which discards episodes yielding cumulative rewards outside the range of expanding intervals. NUI-DDQN consistently gravitates towards optimal joint-policies in deterministic and stochastic reward settings of the AFG, overcoming the outlined pathologies.
Ultrafast dynamics of the low frequency shear mode in $\mathrm{1T'-MoTe_2}$
Creators: name: Fukuda, T.
name: Makino, K.
name: Saito, Y.
name: Fons, P.
name: Kolobov, A. V.
name: Ueno, K.
name: Hase, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report on the dynamics of coherent phonons in semimetal 1T'-MoTe2 using femtosecond pump-probe spectroscopy. On an ultrafast sub-picosecond time scale at room temperature, a low frequency and long-lifetime shear phonon mode was observed at 0.39 THz, which was previously reported in the form of a characteristic phonon only in the low temperature Td-MoTe2 phase. Unlike the other optical phonon modes, the shear phonon mode was found to strongly couple with photoexcited carriers. Moreover, the amplitude of the shear mode surprisingly decreased with increasing excitation density, a phenomenon which can be attributed to be a consequence of the lattice temperature rising after excitation. These results provide useful physical information on ultrafast lattice symmetry switching between the normal semimetal 1T' and the lattice inversion symmetry breaking Type-II Weyl semimetal Td phases.
description: 5 pages, 4 figures, accepted for Applied Physics Letters
Ingredients for good health policy-making : incorporating power and politics into the mix
Creators: name: Buse, Kent
name: Mays, Nicholas
name: Walt, Gill
name: Shawar, Yusra R.
Publisher: name: American University
Year: 2023

description: Published in: Int J Health Policy Manag 2014, 2(4), 203–204. Shawar reviewed the paper.
Measurement of branching fraction ratios and CP asymmetries in $B^{\pm} \to D_{CP}K^{\pm}$
Creators: name: Swain, S. K.
name: Browder, T. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report results on the decay $B^{-} \to D_{CP}K^{-}$ and its charge conjugate using a data sample of 85.4 million $B\bar{B}$ pairs recorded at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric $e^{+}e^{-}$ storage ring. Ratios of branching fractions of Cabibbo-suppressed to Cabibbo-favored processes are determined to be ${\cal B}(B^- \to D^0 K^-)/{\cal B}(B^- \to D^0 π^-)= 0.077 \pm 0.005(stat) \pm 0.006(sys)$, ${\cal B}(B^- \to D_1 K^-)/{\cal B}(B^- \to D_1 π^-) = 0.093 \pm 0.018(stat) \pm 0.008(sys)$ and ${\cal B}(B^- \to D_2 K^-)/{\cal B}(B^- \to D_2 π^-) = 0.108 \pm 0.019(stat) \pm 0.007(sys)$ where the indices 1 and 2 represent the CP=+1 and CP=$-$1 eigenstates of the $D^{0}-\bar{D^{0}}$ system, respectively. We find the partial-rate charge asymmetries for $B^{-} \to D_{CP}K^{-}$ to be ${\cal{A}}_1 = 0.06 \pm 0.19(stat) \pm 0.04(sys)$ and ${\cal{A}}_2 = -0.19 \pm 0.17(stat) \pm 0.05(sys)$.
description: 10 pages, 3 figures, submitted to Physical Review D
Additional file 7 of Patient-reported quality indicators to evaluate physiotherapy care for hip and/or knee osteoarthritis- development and evaluation of the QUIPA tool
Creators: name: Pek Ling Teo
name: Hinman, Rana S.
name: Thorlene Egerton
name: Krysia S. Dziedzic
name: Kasza, Jessica
name: Bennell, Kim L.
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 7. Pass rates for individual quality indicators reported by physiotherapists.
Ingredients for good health policy-making : incorporating power and politics into the mix
Creators: name: Buse, Kent
name: Mays, Nicholas
name: Walt, Gill
name: Shawar, Yusra R.
Publisher: name: International Journal of Health Policy and Management
Year: 2023
Subjects: classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Published in: Int J Health Policy Manag 2014, 2(4), 203–204. Shawar reviewed the paper.
Non-Coulomb strong electron-hole binding in $Ta_2NiSe_5$ revealed by time- and angle-resolved photoemission spectroscopy
Creators: name: Tang, Tangwei
name: Wang, Hongyuan
name: Duan, Shafeng
name: Yang, Yuanyuan
name: Huang, Chaozhi
name: Guo, Yanfeng
name: Qian, Dong
name: Zhang, Wentao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We reveal an ultrafast purely electronic phase transition in \TNS, which is a plausible excitonic insulator, after excited by an ultrafast infrared laser pulse. Specifically, the order parameter of the strong electron-hole binding shrinks with enhancing the pump pulse, and above a critical pump fluence, a photo-excited semimetallic state is experimentally identified with the absence of ultrafast structural transition. In addition, the bare valence and conduction bands and also the effective exciton binding energy in \TNS~are determined. These findings and detailed analysis suggest a bare nonequilibrium semimetallic phase in $Ta_2NiSe_5$ and the strong electron-hole binding cannot be exclusively driven by Coulomb interaction.
description: 18 pages, 10 figures
Panel unit root tests by combining dependent P values : A comparative study
Creators: name: Sheng, Xuguang
name: Yang, Jingyun
Publisher: name: American University
Year: 2023

description: We conduct a systematic comparison of the performance of four commonly used value combination methods applied to panel unit root tests: the original Fisher test, the modified inverse normal method, Simes test, and the modified truncated product method (TPM). Our simulation results show that under cross-section dependence the original Fisher test is severely oversized, but the other three tests exhibit good size properties. Simes test is powerful when the total evidence against the joint null hypothesis is concentrated in one or very few of the tests being combined, but the modified inverse normal method and the modified TPM have good performance when evidence against the joint null is spread among more than a small fraction of the panel units. These differences are further illustrated through one empirical example on testing purchasing power parity using a panel of OECD quarterly real exchange rates.
Noncommutative Quantum Mechanics and Seiberg-Witten Map
Creators: name: Kokado, Akira
name: Okamura, Takashi
name: Saito, Takesi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In order to overcome ambiguity problem on identification of mathematical objects in noncommutative theory with physical observables, quantum mechanical system coupled to the NC U(1) gauge field in the noncommutative space is reformulated by making use of the unitarized Seiberg-Witten map, and applied to the Aharonov-Bohm and Hall effects of the NC U(1) gauge field. Retaining terms only up to linear order in the NC parameter θ, we find that the AB topological phase and the Hall conductivity have both the same formulas as those of the ordinary commutative space with no θ-dependence.
description: 7 pages, no figures, uses revtex4; 8 pages, conclusion changed, Appendix added
Panel unit root tests by combining dependent P values : A comparative study
Creators: name: Sheng, Xuguang
name: Yang, Jingyun
Publisher: name: Journal of Probability and Statistics
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences

description: We conduct a systematic comparison of the performance of four commonly used value combination methods applied to panel unit root tests: the original Fisher test, the modified inverse normal method, Simes test, and the modified truncated product method (TPM). Our simulation results show that under cross-section dependence the original Fisher test is severely oversized, but the other three tests exhibit good size properties. Simes test is powerful when the total evidence against the joint null hypothesis is concentrated in one or very few of the tests being combined, but the modified inverse normal method and the modified TPM have good performance when evidence against the joint null is spread among more than a small fraction of the panel units. These differences are further illustrated through one empirical example on testing purchasing power parity using a panel of OECD quarterly real exchange rates.
Forecaster inattention : measurement, determinants, and policy implications
Creators: name: An, Zidong
name: Sheng, Xuguang
name: Wallen, Jonathan
Publisher: name: American University
Year: 2023

description: Using individual forecasts from the U.S. Survey of Professional Forecasters during 1968-2014 and Consensus Economics for G7 countries during 1990-2014, we provide direct econometric estimates of time varying inattention, defined as the common component in forecasters’ inattentiveness when predicting many economic variables. Based on this measure, we find that professional forecasters update their information sets every four months on average, and they are less inattentive in periods of recession and high economic uncertainty. Through the time varying structural vector autoregression model, we show that the same sized monetary shock has more persistent real effects when the degree of inattention is high. Our findings contribute to the literature on the transmission of monetary policy shocks and suggest inattention as an additional explanation why policy might become less effective during recessions.
Hole Dynamics in the Orthogonal-Dimer Spin System
Creators: name: Saito, Y.
name: Koga, A.
name: Kawakami, N.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The dynamics of a doped hole in the orthogonal-dimer spin system is investigated systematically in one, two and three dimensions. By combining the bond-operator method with the self-consistent Born approximation, we argue that a dispersive quasi-particle state in the dimer phase is well defined even for quasi-two-dimensional systems. On the other hand, a doped hole in the plaquette-singlet phase hardly itinerates, forming an almost localized mode. We further clarify that although the quasi-particle weight in the dimer phase is decreased in the presence of the interchain coupling, it is not suppressed but even enhanced upon the introduction of the interlayer coupling.
description: 8 pages, 10 figures
Forecaster inattention : measurement, determinants, and policy implications
Creators: name: An, Zidong
name: Sheng, Xuguang
name: Wallen, Jonathan
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 3502
subject: Banking, finance and investment

description: Using individual forecasts from the U.S. Survey of Professional Forecasters during 1968-2014 and Consensus Economics for G7 countries during 1990-2014, we provide direct econometric estimates of time varying inattention, defined as the common component in forecasters’ inattentiveness when predicting many economic variables. Based on this measure, we find that professional forecasters update their information sets every four months on average, and they are less inattentive in periods of recession and high economic uncertainty. Through the time varying structural vector autoregression model, we show that the same sized monetary shock has more persistent real effects when the degree of inattention is high. Our findings contribute to the literature on the transmission of monetary policy shocks and suggest inattention as an additional explanation why policy might become less effective during recessions.
WMAP Bounds on Braneworld Tachyonic Inflation
Creators: name: Bento, Maria C.
name: Santos, Nuno M. C.
name: Sen, Anjan A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the implications of the Wilkinson Microwave Anisotropy Probe (WMAP) results for a braneworld tachyonic model of inflation. We find that WMAP bounds on $n_s$ allow us to constrain significantly the parameter space of the model; in particular, extremely weak string coupling is required, $g_s \sim 10^{-15}$. Moreover, our analysis shows that the running of the scalar spectral index is within the bounds determined by WMAP for the allowed range of model parameters; however, it is not possible to obtain $n_s>1$ on large scales and $n_s<1$ on small scales.
description: 15 pages, 2 eps figures
Measuring uncertainty of a combine forecast and some tests for forecaster heterogeneity
Creators: name: Lahiri, Kajal
name: Peng, Huaming
name: Sheng, Xuguang
Publisher: name: American University
Year: 2023

description: We have argued that from the standpoint of a policy maker, the uncertainty of using the average forecast is not the variance of the average, but rather the average of the variances of the individual forecasts that incorporate idiosyncratic risks. With a slight reformulation of the loss function and a standard factor decomposition of a panel of forecasts, we show that the uncertainty of the average forecast can be expressed as the disagreement among the forecasters plus the volatility of the common shock. Using new statistics to test for the homogeneity of idiosyncratic errors under the joint limits with both T and n approaching infinity simultaneously, we show that some previously used measures significantly underestimate the conceptually correct benchmark forecast uncertainty.
A Generalization of the Classical Kelly Betting Formula to the Case of Temporal Correlation
Creators: name: O'Brien, Joseph D.
name: Burke, Kevin
name: Burke, Mark E.
name: Barmish, B. Ross
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: For sequential betting games, Kelly's theory, aimed at maximization of the logarithmic growth of one's account value, involves optimization of the so-called betting fraction $K$. In this Letter, we extend the classical formulation to allow for temporal correlation among bets. To demonstrate the potential of this new paradigm, for simplicity of exposition, we mainly address the case of a coin-flipping game with even-money payoff. To this end, we solve a problem with memory depth $m$. By this, we mean that the outcomes of coin flips are no longer assumed to be i.i.d.random variables. Instead, the probability of heads on flip $k$ depends on previous flips $k-1,k-2,...,k-m$. For the simplest case of $n$ flips, with $m = 1$, we obtain a closed form solution $K_n$ for the optimal betting fraction. This generalizes the classical result for the memoryless case. That is, instead of fraction $K^* = 2p-1$ which pervades the literature for a coin with probability of heads $p\geq 1/2$, our new fraction $K_n$ depends on both $n$ and the parameters associated with the temporal correlation. Generalizations of these results for $m > 1$ and numerical simulations are also included. Finally, we indicate how the theory extends to time-varying feedback and alternative payoff distributions.
description: 6 pages, 3 figures. Accepted for publication in IEEE Control Systems Letters
A RICH Multiplicity Veto for the HERA-B Experiment
Creators: name: Husemann, U.
name: Adams, M.
name: Bocker, M.
name: Bruggemann, M.
name: Buchholz, P.
name: Cruse, C.
name: Kolotaev, Y.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the design and commissioning of a new multiplicity veto for the HERA-B detector, a fixed-target spectrometer originally designed to study the physics of B mesons in proton-nucleus interactions. The HERA-B trigger is a message-driven multi-level track trigger. The first level trigger (FLT) consists of custom-made electronics, and the higher trigger levels are implemented as PC farms. The multiplicity veto has been designed to reject high-multiplicity events before they enter the trigger chain. A veto signal is generated based on the comparison of the number of photons in part of the HERA-B ring-imaging Cherenkov counter (RICH) with a programmable threshold. The RICH Multiplicity Veto is a modular system. First the hits in 256 detector channels are summed by Base Sum Cards (BSC), then FED Sum Cards (FSC) sum the subtotals of up to eight BSCs. Finally the Veto Board (VB) takes the veto decision based on the sum of up to 14 FSCs. The RICH Multiplicity Veto has been successfully installed and commissioned in HERA-B. The measured veto efficiency is (99.9991+/-0.0001)%, and the system is used in the routine data-taking of the HERA-B experiment.
description: 16 pages, 17 figures. to be published in IEEE Transactions on Nuclear Science
An investigation into the application of vertical garden at the new SUB atrium
Creators: name: Shiah, Kevin
name: Kim, JeongWoo
Publisher: name: The University of British Columbia
Year: 2012

description: In 21 Century, one of the biggest challenges is to bring the nature into urban areas and perhaps, the most effective and spectacular resolution is the vertical garden. In response to AMS Design Committee's goal of inspiring students and visitors, this report investigates the potential feasibility and inspirational factors of installing vertical gardens on the new Student Union Building (SUB) at the University of British Columbia. A vertical garden, also known as a green wall, is basically an interior or exterior wall that is completely or partially planted with vegetations. A triple bottom line assessment is performed to examine the environmental, social, and economic influences of installing the vertical garden. After collaborative research and analysis, it is concluded that installing the vertical garden will not only improve the new Student Union Building aesthetically but also provide a good role model to the city of Vancouver on how future buildings can be constructed with vertical gardens installed. Most importantly, it will raise the public awareness in green features of the vertical garden to the building users and visitors. Nowadays, the concepts of environmentally friendliness and sustainability earn more attention from the world. Being one of the leading institutions that advocate this sustainability concept, it is recommended to install the vertical garden on the new Student Union Building. 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.”
Higgs-mass dependence of the effective electroweak mixing angle $\sin^2θ_{eff}$ at the two-loop level
Creators: name: Hollik, W.
name: Meier, U.
name: Uccirati, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The result for the Higgs-dependent electroweak two-loop bosonic contributions to the effective leptonic mixing angle of the $Z$-boson in the Standard Model is presented. Together with the previously calculated fermionic contributions it yields the complete dependence of $\sin^2θ_{\rm eff}$ on the Higgs-boson mass $M_H$. Compared to the fermionic contributions, the bosonic contributions are found to be smaller and have the opposite sign, compensating part of the fermionic contributions.
description: 8 pages, 2 figures, 2 tables
Interferometer for force measurement by shortcut-to-adiabatic arms guiding
Creators: name: Rodriguez-Prieto, A.
name: Martínez-Garaot, S.
name: Lizuain, I.
name: Muga, J. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a compact atom interferometer to measure homogeneous constant forces guiding the arms via shortcuts to adiabatic paths. For a given sensitivity, which only depends on the space-time area of the guiding paths, the cycle time can be made fast without loosing visibility. The atom is driven by spin-dependent trapping potentials moving in opposite directions, complemented by linear and time-dependent potentials that compensate the trap acceleration. Thus the arm states are adiabatic in the moving frames, and non-adiabatic in the laboratory frame. The trapping potentials may be anharmonic, e.g. optical lattices, and the interferometric phase does not depend on the initial motional state or on the pivot point for swaying the linear potentials.
description: 7 pages, 3 figures
Additional file 16 of PARIS induced defects in mitochondrial biogenesis drive dopamine neuron loss under conditions of parkin or PINK1 deficiency
Creators: name: Pirooznia, Sheila K.
name: Changqing Yuan
name: Khan, Mohammed Repon
name: Senthilkumar S. Karuppagounder
name: Wang, Luan
name: Yulan Xiong
name: Kang, Sung Ung
name: Yunjong Lee
name: Valina L. Dawson
name: Dawson, Ted M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 16: Figure S6. Dopaminergic neurotoxicity resulting from reduced parkin or PINK1 activity prevented under conditions of dPARIS knockdown.
Next Stop Perpetual Beta: notes for an ethics of design in digitally augmented learning contexts
Creators: name: Moriggi, Stefano
Publisher: name: Journal of e-Learning and Knowledge Society
Year: 2021

description: Not even the pandemic period – which in many ways made necessary the use of networked devices – has contributed to trigger a reflection able to conceive and manage the digital beyond the opportunity/limitation represented by the remote connection. In the light of this awareness, this contribution will try to highlight some epistemological premises in order to outline a conceptual and operational context within which to make more intelligible the complexity of our interaction with digital technologies. Consequently, we will proceed to outline a design horizon within which to develop pedagogical perspectives and education approaches in which digital technology could effectively contribute to reshaping and enriching the learning scenario. More specifically, by sharing the main goals and some of the decisive phases of the project design “Briciole di Futuro” (“Crumbs of the Future”) – carried out during the 2019/2020 school year in a class (fifth year) of the primary school of the IC Galilei in Reggio Emilia – we will try to highlight the opportunity to identify in digital technology a coherent extension and a creative expression of that cooperative and anti-authoritarian matrix of the scientific community. The spatio-temporal prerogatives of a digitally augmented classroom setting will be also illustrated, as well as the methodological strategies selected in order to facilitate, in the multiple types of interactions thus made possible among the children (and with the teachers), a dialectical experience and an argumentative habit in order to achieve, in this case, a shared co-design of the school of the future (year 2119).
description: Journal of e-Learning and Knowledge Society, Vol 17 No 3 (2021): Journal of e-Learning and Knowledge Society - Special Issue on "Children and the Digital"
Measuring uncertainty of a combine forecast and some tests for forecaster heterogeneity
Creators: name: Lahiri, Kajal
name: Peng, Huaming
name: Sheng, Xuguang
Publisher: name: Center for Economic Studies & Ifo Institute
Year: 2023
Subjects: classificationCode: 38
subject: Economics

description: We have argued that from the standpoint of a policy maker, the uncertainty of using the average forecast is not the variance of the average, but rather the average of the variances of the individual forecasts that incorporate idiosyncratic risks. With a slight reformulation of the loss function and a standard factor decomposition of a panel of forecasts, we show that the uncertainty of the average forecast can be expressed as the disagreement among the forecasters plus the volatility of the common shock. Using new statistics to test for the homogeneity of idiosyncratic errors under the joint limits with both T and n approaching infinity simultaneously, we show that some previously used measures significantly underestimate the conceptually correct benchmark forecast uncertainty.
Polarization Transfer Measurement for $^1H(\vec{d},\vec{p})^2 H$ Elastic Scattering at 135 MeV/u and Three Nucleon Force Effects
Creators: name: Sekiguchi, K.
name: Sakai, H.
name: Witała, H.
name: Ermisch, K.
name: Glöckle, W.
name: Golak, J.
name: Hatano, M.
name: Kamada, H.
name: Kalantar-Nayestanaki, N.
name: Kato, H.
name: Maeda, Y.
name: Nishikawa, J.
name: Nogga, A.
name: Ohnishi, T.
name: Okamura, H.
name: Saito, T.
name: Sakamoto, N.
name: Sakoda, S.
name: Satou, Y.
name: Suda, K.
name: Tamii, A.
name: Uchigashima, T.
name: Uesaka, T.
name: Wakasa, T.
name: Yako, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The deuteron to proton polarization transfer coefficients for the $d$--$p$ elastic scattering were precisely measured with an incoming deuteron energy of 135 MeV/u at the RIKEN Accelerator Research Facility. The data are compared to theoretical predictions based on exact solutions of three-nucleon Faddeev equations with high--precision nucleon--nucleon forces combined with different three-nucleon forces (3NFs), representing the current, most popular models: the $2π$-exchange Tucson-Melbourne model, a modification thereof closer to chiral symmetry TM'(99), and the Urbana IX 3NF. Theory predicts large 3NF effects, especially in the angular range around the cross section minimum, but the present data only partially concurs, predominantly for $K_{xx}^{y'}-K_{yy}^{y'}$ ($K_{xx}^{y'}$, $K_{yy}^{y'}$). For the induced polarization, $P^{y'}$, the TM$'$(99) and Urbana IX 3NFs reproduce the data, but the Tucson-Melbourne 3NF fails to describe the data. For the polarization transfer coefficients, $K_{y}^{y'}$ and $K_{xz}^{y'}$, the predicted 3NF ffects are in drastic conflict to the data. These facts clearly reveal the defects of the 3NF models currently used.
description: 32 pages, 12 figures, Submitted to Physical Review C
Cooperative dynamics in bidirectional transport on flexible lattice
Creators: name: Jindal, Akriti
name: Verma, Atul Kumar
name: Gupta, Arvind Kumar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Several theoretical models based on totally asymmetric simple exclusion process (TASEP) have been extensively utilized to study various non-equilibrium transport phenomena. Inspired by the the role of microtubule-transported vesicles in intracellular transport, we propose a generalized TASEP model where two distinct particles are directed to hop stochastically in opposite directions on a flexible lattice immersed in a three dimensional pool of diffusing particles. We investigate the interplay between lattice conformation and bidirectional transport by obtaining the stationary phase diagrams and density profiles within the framework of mean field theory. For the case when recycling strength is independent of density of particles, the topology of phase diagram alters quantitatively. However, if the lattice occupancy governs the global conformation of lattice, in addition to the pre-existing phases for bidirectional transport a new asymmetric shock-low density phase originates in the system. We identified that this phase is sensitive to finite size effect and vanishes in the thermodynamic limit.
A framework on the emergence and effectiveness of global health networks
Creators: name: Shiffman, Jeremy
name: Quissell, Kathryn
name: Schmitz, Hans Peter
name: Pelletier, David L.
name: Smith, Stephanie L.
name: Berlan, David
name: Gneiting, Uwe
name: Slyke, David Van
name: Mergel, Ines
name: Rodriguez, Mariela
name: Walt, Gill
Publisher: name: American University
Year: 2023

description: Since 1990 mortality and morbidity decline has been more extensive for some conditions prevalent in low- and middle-income countries than for others. One reason may be differences in the effectiveness of global health networks, which have proliferated in recent years. Some may be more capable than others in attracting attention to a condition, in generating funding, in developing interventions and in convincing national governments to adopt policies. This article introduces a supplement on the emergence and effectiveness of global health networks. The supplement examines networks concerned with six global health problems: tuberculosis (TB), pneumonia, tobacco use, alcohol harm, maternal mortality and newborn deaths. This article presents a conceptual framework delineating factors that may shape why networks crystallize more easily surrounding some issues than others, and once formed, why some are better able than others to shape policy and public health outcomes. All supplement papers draw on this framework. The framework consists of 10 factors in three categories: (1) features of the networks and actors that comprise them, including leadership, governance arrangements, network composition and framing strategies; (2) conditions in the global policy environment, including potential allies and opponents, funding availability and global expectations concerning which issues should be prioritized; (3) and characteristics of the issue, including severity, tractability and affected groups. The article also explains the design of the project, which is grounded in comparison of networks surrounding three matched issues: TB and pneumonia, tobacco use and alcohol harm, and maternal and newborn survival. Despite similar burden and issue characteristics, there has been considerably greater policy traction for the first in each pair. The supplement articles aim to explain the role of networks in shaping these differences, and collectively represent the first comparative effort to understand the emergence and effectiveness of global health networks.
The Hundred Languages of Digital in the Reggio Emilia Approach
Creators: name: Tedeschi, Maddalena
name: Maccaferri, Elena
name: Rabotti, Annalisa
Publisher: name: Journal of e-Learning and Knowledge Society
Year: 2021

description: Digital environments in the Reggio Emilia Approach construct relational and communicative conditions that tend towards shaping modes of ecological research, where adults and children can create "platforms of community thinking" considered as processes of elaboration, in which the intelligences of children and those of the digital become proximal. Digital technologies create geographies of place and representation close to children's visions of possible and dream worlds, with awareness that the imaginary worlds they bring to life always border on the world they inhabit, and the emotions they generate are always and only real. Infant-toddler centres and preschools therefore have a responsibility for generating contexts of reflexive critical reasoning, on contents, on sources, and on the modes of communicating and relating that digital environments propose and offer, and for making visible the learning processes these contexts favour. Digital constructs connective threads between things, between situations, between experiences, so creating mental representations, subjective and group, between the real and the possible.
description: Journal of e-Learning and Knowledge Society, Vol 17 No 3 (2021): Journal of e-Learning and Knowledge Society - Special Issue on "Children and the Digital"
The close relation between border and Pommaret marked bases
Creators: name: Bertone, Cristina
name: Cioffi, Francesca
Publisher: name: arXiv
Year: 2020
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 13P10, 14C05, 14Q20

description: Given a finite order ideal $\mathcal O$ in the polynomial ring $K[x_1,\dots, x_n]$ over a field $K$, let $\partial \mathcal O$ be the border of $\mathcal O$ and $\mathcal P_{\mathcal O}$ the Pommaret basis of the ideal generated by the terms outside $\mathcal O$. In the framework of reduction structures introduced by Ceria, Mora, Roggero in 2019, we investigate relations among $\partial\mathcal O$-marked sets (resp. bases) and $\mathcal P_{\mathcal O}$-marked sets (resp. bases). We prove that a $\partial\mathcal O$-marked set $B$ is a marked basis if and only if the $\mathcal P_{\mathcal O}$-marked set $P$ contained in $B$ is a marked basis and generates the same ideal as $B$. Using a functorial description of these marked bases, as a byproduct we obtain that the affine schemes respectively parameterizing $\partial\mathcal O$-marked bases and $\mathcal P_{\mathcal O}$-marked bases are isomorphic. We are able to describe this isomorphism as a projection that can be explicitly constructed without the use of Gröbner elimination techniques. In particular, we obtain a straightforward embedding of border schemes in smaller affine spaces. Furthermore, we observe that Pommaret marked schemes give an open covering of punctual Hilbert schemes. Several examples are given along all the paper.
description: 17 pages; presentation improved, some references added
Leibniz rule and exact supersymmetry on lattice: a case of supersymmetrical quantum mechanics
Creators: name: Kato, Mitsuhiro
name: Sakamoto, Makoto
name: So, Hiroto
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We propose a new formulation of lattice theory. It is given by a matrix form and suitable for satisfying Leibniz rule on lattice. The theory may be interpreted as a multi-flavor system. By realizing the difference operator as a commutator, we may obtain exact supersymmetric theories on lattice explicitly. Some problems such as locality and single flavor reduction are also commented.
description: 6 pages, Talk presented at Lattice 2005 (Theoretical Developments)
Digital Sculptors
Creators: name: Grasselli, Maria Giuseppina
Publisher: name: Journal of e-Learning and Knowledge Society
Year: 2021

description: Together with painting and music, sculpture is considered one of the Fine Arts, for its intrinsic aim of expressing beauty. It consists of the art of modelling clay, sculpting stone, wood, and other materials to create three-dimensional objects. It allows us to shape materials, and research a reality that produces knowledge of the world, and of ourselves. With its rich expressivity sculpture can be considered to all effects a language, given to children's hands, and offering them a way of communicating the interior world, creatively expressing thoughts and feelings. What happens when an artistic expression strongly associated with materiality encounters the digital? We speak today of hybrid materiality, of space and time “spime” objects, of digital fabrication and indirect manipulation of artefacts. These new forms of digital sculpting enrich imaginaries and meet original artistic visions. Relations between materiality and digital are increasingly complex and interesting, so that we wanted to explore this in a school context, with a group of 23 children at the Primary School at the Loris Malaguzzi International Centre in Reggio Emilia. The intent of the project design that supported this research, was to experiment in parallel ways with different sculpting proposals (clay, 3D pen, digital manipulation, and 3D printing), asking the children for their comparative analysis.
description: Journal of e-Learning and Knowledge Society, Vol 17 No 3 (2021): Journal of e-Learning and Knowledge Society - Special Issue on "Children and the Digital"
Network advocacy and the emergence of global attention to newborn survival
Creators: name: Shiffman, Jeremy
Publisher: name: American University
Year: 2023

description: Globally 2.9 million babies die each year before reaching 28 days of life. Over the past quarter century, neonatal mortality has declined at a slower pace than post- neonatal under-five mortality: in consequence newborns now comprise 44% of all deaths to children under five years. Despite high numbers of newborn deaths, global organizations and national governments paid little attention to the issue until 2000, and resources, while growing since then, remain inadequate. This study examines the factors behind these patterns of policy attention: the delayed emergence of attention, its sudden appearance in 2000, its growth thereafter, but the dearth of resources to date. Drawing on a framework on global health networks grounded in collective action theory, the study finds that a newborn survival network helped to shift perceptions about the problem’s severity and tractability, contributing to the rise of global attention. Its efforts were facilitated by pressure on governments to achieve the child survival Millennium Development Goal and by growing awareness that the neonatal period constituted a growing percentage of under-five mortality, a fact the network publicized. The network’s relatively recent emergence, its predominantly tech- nical rather than political composition and strategies, and its inability to date to find a framing of the issue that has convinced national political leaders of the issue’s urgency, in part explain the insufficiency of resources. However, since 2010 a number of non-health oriented inter-governmental organizations have begun to pay attention to the issue, and several countries with high neonatal mortality have created national plans, developments which augur well for the future. The study points to two broader implications concerning how neglected global health issues come to attract attention: priority emerges from a confluence of factors, rather than any single cause; and growth in priority may depend on the creation of a broader political coalition that extends beyond the largely technically oriented actors who may first press for attention to a problem.