cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Phosphorus release from dairy manure
Creators: name: Pan, Szu-Hua
Publisher: name: University of British Columbia
Year: 2009

description: The molybdenum blue methods were used to determinate phosphate concentration of liquid dairy manure. Varying liquid dairy manure/deionized water ratios revealed that there existed a positive effect of dilution by deionized water on the measured manure ortho-P concentration. Several chemicals such as sodium bicarbonate, sodium bisulfite, hydrochloric acid, hydrogen peroxide etc. failed to eliminate the interference caused by the unknown compound in the dairy manure. The recovery of phosphorus from animal manures will be an important step in the overall management and sustainability of phosphorus use. The combined chemicals/microwave treatment of raw dairy manure was developed as part of the studies for enhancing the recovery of phosphorus from animal wastes. Up to 86% of total phosphate could be released into solution with a total of ten minutes of microwave treatment. An efficient approach was developed for facilitating phosphorus release from dairy manure at ambient temperature. Up to 80% of the total phosphate could be released from dairy manure.
On the Thermodynamics of Goedel Black Holes
Creators: name: Klemm, Dietmar
name: Vanzo, Luciano
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: After a brief review of Goedel-type universes in string theory, we discuss some intriguing properties of black holes immersed in such backgrounds. Among these are the upper bound on the entropy that points towards a finite-dimensional Hilbert space of a holographically dual theory, and the minimum black hole temperature that is reminiscent of the Hawking-Page transition. Furthermore, we discuss several difficulties that are encountered when one tries to formulate a consistent thermodynamics of Goedel black holes, and point out how they may be circumvented.
description: 7 pages, 2 figures, uses w-art.cls. Talk given by D. K. at the RTN Workshop on the Quantum Structure of Spacetime and the Geometric Nature of Fundamental Interactions and EXT Workshop on Fundamental Interactions and the Structure of Spacetime, Kolymbari, Crete, Greece, 5-10 Sep 2004. To be published in Fortsch.Phys
Food Security and Nutrition in Bangladesh: Progress and Determinants
Creators: name: Hossain, Mahabub
name: Naher, Firdousi
name: Shahabuddin, Quazi
name: Hossain, Mahabub
name: Naher, Firdousi
name: Shahabuddin, Quazi
Publisher: name: Unknown
Year: 2005
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Bangladesh
subject: food security
subject: nutrition
subject: poverty
subject: safety nets
subject: natural disasters

description: For Bangladesh food security was synonymous with achieving self-sufficiency in rice production and stabilization in rice prices. The country has made good progress in increasing rice production through technological progress, facilitated by private sector investment in small scale irrigation. But, it is difficult to sustain the progress made in view of the growing pressure of population on scarce land resources. Domestic food grain production remains susceptible to floods and droughts thereby perpetuating the threat of major production shortfalls, inadequate food availability, and vulnerability from fluctuation in prices. The availability of other foods has not increased, and the progress in nutritional outcome has remained slow. Forty percent of the population lives below the poverty line, and income inequality has been worsening. This paper assesses the trends in factors that affect food production, availability of food and their impact on nutrition outcomes. It also probes into the trends in poverty and distribution of income and access to food through markets.
Additional file 1 of The risk of eating disorder relapse during pregnancy and after delivery and postpartum depression among women recovered from eating disorders
Creators: name: Makino, Mariko
name: Yasushi, Mitsuo
name: Sueharu Tsutsui
Publisher: name: figshare
Year: 2020
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Patients’ Characteristics. Tabular description of the demographic data of the participants.
A fast radio burst associated with a Galactic magnetar
Creators: name: Bochenek, Christopher D.
name: Ravi, Vikram
name: Belov, Konstantin V.
name: Hallinan, Gregg
name: Kocz, Jonathon
name: Kulkarni, Shri R.
name: McKenna, Dan L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Since their discovery in 2007, much effort has been devoted to uncovering the sources of the extragalactic, millisecond-duration fast radio bursts (FRBs). A class of neutron star known as magnetars is a leading candidate source of FRBs. Magnetars have surface magnetic fields in excess of $10^{14}$ G, the decay of which powers a range of high-energy phenomena. Here we present the discovery of a millisecond-duration radio burst from the Galactic magnetar SGR 1935+2154, with a fluence of $1.5\pm 0.3$ Mega-Jansky milliseconds. This event, termed ST 200428A(=FRB 200428), was detected on 28 April 2020 by the STARE2 radio array in the 1281--1468\,MHz band. The isotropic-equivalent energy released in ST 200428A is $4\times10^{3}$ times greater than in any Galactic radio burst previously observed on similar timescales. ST 200428A is just 40 times less energetic than the weakest extragalactic FRB observed to date, and is arguably drawn from the same population as the observed FRB sample. The coincidence of ST 200428A with an X-ray burst favours emission models developed for FRBs that describe synchrotron masers or electromagnetic pulses powered by magnetar bursts and giant flares. The discovery of ST 200428A implies that active magnetars like SGR 1935+2154 can produce FRBs at extragalactic distances. The high volumetric rate of events like ST 200428A motivates dedicated searches for similar bursts from nearby galaxies.
description: 23 pages, 7 figures, 2 tables. Submitted to Nature
Mainstreaming Safety Nets in the Social Protection Policy Agenda: A New Vision or the Same Old Perspective?
Creators: name: Gentilini, Ugo
name: Gentilini, Ugo
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: vulnerability
subject: risk
subject: shocks
subject: social protection
subject: safety nets

description: Social protection aims to provide a national platform for smoothly transitioning from a chaotic collection of shock responses to an institutionalized system for risk and non-risk management. For the poorest, the transition aims to move away from ad hoc, unpredictable relief to national safety nets that deliver timely, multi-year, guaranteed and predictable transfers. Social protection has to face particular challenges in chronically poor, shock-prone countries where the distinction between the chronic and transitory poor is often blurred. Other conceptual and programmatic issues also need further investigation. For filling these gaps, a research agenda articulated in ten thematic areas is proposed.
การพัฒนาระบบขายหนังสือออนไลน์และบุ๊คแชทแบบเรียลไทม์
Creators: name: เพ็ญณี หวังเมธีกุล
Publisher: name: กองบรรณาธิการวารสารแม่โจ้เทคโนโลยีสารสนเทศและนวัตกรรม มหาวิทยาลัยแม่โจ้
Year: 2564
Subjects: เว็บแอปพลิเคชัน
ระบบชุมชน
บล็อก
แชท
พาณิชย์อิเล็กทรอนิกส์

description: วารสารแม่โจ้เทคโนโลยีสารสนเทศและนวัตกรรม, 7, 2, 51-78
title: Online ACT for Caregivers: A Longitudinal Mixed Methods Study
Creators: name: Gossner, Jacob D.
Publisher: name: Utah State University
Year: 2024

description: Family caregivers for people with dementia are a resilient population operating under stressful circumstances that can put them at risk of multiple negative outcomes. Existing interventions may be difficult for family caregivers to access due to time and transportation constraints; an alternative is online, self-guided interventions that caregivers can access from their own homes. The purpose of this dissertation is to evaluate the impact of ACT for Caregivers, a six session online, self-guided program based on the principles of Acceptance and Commitment Therapy. Participants had an average age of 61.93 (SD = 13.69), had been caregiving for an average of 4.69 years (SD = 4.74), and were primarily female (84.1%) and White (87.7%). Fifty-four percent were spousal caregivers and fifty three percent lived in the Mountain time zone. Both statistical data at three time points (n = 113 family caregivers) and semi-structured interviews at two time points (n = 28 family caregivers) were used to examine the impact of the program on multiple outcomes, including stress reaction to symptoms of dementia, burdensomeness of caregiving, positive aspects of caregiving, quality of life, depressive symptoms, sleep quality, and psychological flexibility. Quantitative results demonstrated improvement in all outcomes during the intervention that was maintained or increased at follow-up. Qualitative results converged with the quantitative results and highlighted common aspects of change across outcomes. Results suggest that the program is a promising avenue for intervention with family caregivers.
Pairing and Superconductivity from weak to strong coupling in the Attractive Hubbard model
Creators: name: Toschi, A.
name: Barone, P.
name: Capone, M.
name: Castellani, C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The finite-temperature phase diagram of the attractive Hubbard model is studied by means of the Dynamical Mean Field Theory. We first consider the normal phase of the model by explicitly frustrating the superconducting ordering. In this case we obtain a first-order pairing transition between a metallic phase and a paired phase formed by strongly coupled incoherent pairs. The transition line ends in a finite temperature critical point, but a crossover between two qualitatively different solutions still occurs at higher temperature. Comparing the superconducting and the normal phase solutions, we find that the superconducting instability always occurs before the pairing transition in the normal phase takes place, i.e., $T_c > T_{pairing}$. Nevertheless, the high-temperature phase diagram at $T > T_c$ is still characterized by a crossover from a metallic phase to a preformed pair phase. We characterize this crossover by computing different observables that can be used to identify the pseudogap region, like the spin susceptibility, the specific heat and the single-particle spectral function.
description: 10 pages, 8 figures
Additional file 3 of Prevalence of pneumonia and its associated factors among under-five children in East Africa: a systematic review and meta-analysis
Creators: name: Biruk Beletew
name: Melaku Bimerew
name: Ayelign Mengesha
name: Mesfin Wudu
name: Molla Azmeraw
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3 Table S1. Search strategy used for one of the databases
Study of the angular coefficients and corresponding helicity cross sections of the W boson in hadron collisions
Creators: name: Strologas, John
name: Errede, Steven
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the Standard Model prediction for the eight angular coefficients of the W boson, which completely describe its differential cross section in hadron collisions. These coefficients are ratios of the W helicity cross sections and the total unpolarized cross section. We also suggest a technique to experimentally extract the coefficients.
description: 8 pages, 13 figures
ประสิทธิภาพการใช้ระบบสนับสนุนการตัดสินใจสำหรับระบบเกษตรนาแปลงใหญ่ของเกษตรกรผู้ปลูกข้าวในเขตภาคเหนือตอนบน
Creators: name: สมชาย อารยพิทยา
Publisher: name: กองเทคโนโลยีดิจิทัล สำนักงานมหาวิทยาลัย มหาวิทยาลัยแม่โจ้ (Technology Digital Division, Office of University, Maejo University, )
Year: 2563
Subjects: ระบบเกษตรนาแปลงใหญ่
ระบบสนับสนุนการตัดสินใจ
ประสิทธิภาพของระบบสนับสนุนการตัดสินใจสำหรับระบบเกษตรนาแปลงใหญ่

description: วารสารแม่โจ้เทคโนโลยีสารสนเทศและนวัตกรรม, 6, 2, 17-35
String theory and the KLT-relations between gravity and gauge theory including external matter
Creators: name: Bjerrum-Bohr, N. E. J.
name: Risager, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the Kawai-Lewellen-Tye (KLT) factorizations of gravity scalar-leg amplitudes into products of scalar-leg Yang-Mills amplitudes. We check and examine the factorizations at O(1) in $α'$ and extend the analysis by considering KLT-mapping in the case of generic effective Lagrangians for Yang-Mills theory and gravity.
description: 7 pages, ReVTeX4, references updated, changes to text and typos corrected
АНАЛИЗ ПРОЦЕССА ОБОГАЩЕНИЯ МЕДНО-ЦИНКОВЫХ РУД МЕТОДОМ СЕЛЕКТИВНОЙ ФЛОТАЦИИ
Creators: name: Турдиев, Шаҳбоз
name: Маллаев, Шамшод
Publisher: name: Zenodo
Year: 2025

description: Медно-цинковые руды являются важным источником цветных металлов, используемых в различных отраслях промышленности. Их переработка представляет собой сложный технологический процесс, включающий измельчение, флотацию и последующую переработку полученных концентратов. Основная задача обогащения медно-цинковых руд заключается в эффективном разделении сульфидов меди и цинка, что требует применения различных реагентных режимов и оптимального выбора схем флотации.
HIV/AIDS and the Agricultural Sector: Implications for Policy in Eastern and Southern Africa
Creators: name: Jayne, Thomas S.
name: Villarrea, Marcela
name: Pingali, Prabhu L.
name: Hemrich, Gunter
name: Jayne, Thomas S.
name: Villarrea, Marcela
name: Pingali, Prabhu L.
name: Hemrich, Gunter
Publisher: name: Unknown
Year: 2005
Subjects: Health Economics and Policy

description: This paper draws upon development economics theory, demographic projections, and empirical evidence to consider the likely consequences of the HIV/AIDS pandemic for the agricultural sector of the hardest-hit countries of Eastern and Southern Africa. We identify four processes that have been underemphasized in previous analysis: 1) the momentum of long-term population growth rates; 2) substantial underemployment in these countries’ informal sectors; 3) steady declines in land-to-person ratios in the smallholder farming sectors; and 4) effects of food and input marketing reforms on shifts in cropping patterns. The paper concludes that the conventional wisdom encouraging prioritisation of labour-saving technology or crops has been over-generalised, although labour-saving agricultural technologies may be appropriate for certain types of households and regions. The most effective means for agricultural policy to respond to HIV/AIDS will entail stepping up support for agricultural science and technology development, extension systems, and input and crop market development to improve the agricultural sector’s potential to raise living standards in highly affected rural communities. Agricultural productivity growth may also help to overcome poverty-related factors that may interact with the disease to magnify its effects.
Brokers vs. Retailers: Evidence from the French Imports Industry of Fresh Produce.
Creators: name: Latouche, Karine
name: Rouviere, Elodie
name: Latouche, Karine
name: Rouviere, Elodie
Publisher: name: Unknown
Year: 2011
Subjects: Agribusiness
International Relations/Trade

description: There is little discussion in the literature about trade intermediaries because data is rare. Using very original data, our article sheds light on the behavior of trade intermediaries when importing fresh fruit and vegetables in France. To do so, we distinguish among direct and indirect imports respectively operated through brokers or retailers. We then investigate the impact of country level data on the share of indirect/direct flows of imports by country of origin at the 8-digit level that enter the french market. We show that brokers are more likely to operate in context when fixed and variable costs to trade are high whereas retailers are sensitive to tariffs and product sensitivity.
Analysis of node2vec random walks on networks
Creators: name: Meng, Lingqi
name: Masuda, Naoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Random walks have been proven to be useful for constructing various algorithms to gain information on networks. Algorithm node2vec employs biased random walks to realize embeddings of nodes into low-dimensional spaces, which can then be used for tasks such as multi-label classification and link prediction. The performance of the node2vec algorithm in these applications is considered to depend on properties of random walks that the algorithm uses. In the present study, we theoretically and numerically analyze random walks used by the node2vec. Those random walks are second-order Markov chains. We exploit the mapping of its transition rule to a transition probability matrix among directed edges to analyze the stationary probability, relaxation times in terms of the spectral gap of the transition probability matrix, and coalescence time. In particular, we show that node2vec random walk accelerates diffusion when walkers are designed to avoid both back-tracking and visiting a neighbor of the previously visited node but do not avoid them completely.
description: 9 figures, 2 tables
Additional file 1 of Prevalence of pneumonia and its associated factors among under-five children in East Africa: a systematic review and meta-analysis
Creators: name: Biruk Beletew
name: Melaku Bimerew
name: Ayelign Mengesha
name: Mesfin Wudu
name: Molla Azmeraw
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. PRISMA 2009 Checklist
Gamma-ray heartbeat powered by the microquasar SS 433
Creators: name: Li, Jian
name: Torres, Diego F.
name: Liu, Ruo-Yu
name: Kerr, Matthew
name: Wilhelmi, Emma de Ona
name: Su, Yang
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Microquasars, the local siblings of extragalactic quasars, are binary systems comprising a compact object and a companion star. By accreting matter from their companions, microquasars launch powerful winds and jets, influencing the interstellar environment around them. Steady gamma-ray emission is expected to rise from their central objects, or from interactions between their outflows and the surrounding medium. The latter prediction was recently confirmed with the detection of SS 433 at high (TeV) energies. In this report, we analyze more than ten years of GeV gamma-ray data from the Fermi Gamma-ray Space Telescope on this source. Detailed scrutiny of the data reveal emission in the SS 433 vicinity, co-spatial with a gas enhancement, and hints for emission possibly associated with a terminal lobe of one of the jets. Both gamma-ray excesses are relatively far from the central binary, and the former shows evidence for a periodic variation at the precessional period of SS 433, linking it with the microquasar. This result challenges obvious interpretations and is unexpected from any previously published theoretical models. It provides us with a chance to unveil the particle transport from SS 433 and to probe the structure of the local magnetic field in its vicinity.
description: published in Nature Astronomy
Quantifying torque from the Milky Way bar using Gaia DR2
Creators: name: Kipper, Rain
name: Tenjes, Peeter
name: Tuvikene, Taavi
name: Veena, Punyakoti Ganeshaiah
name: Tempel, Elmo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We determine the mass of the Milky Way bar and the torque it causes, using Gaia DR2, by applying the orbital arc method. Based on this, we have found that the gravitational acceleration is not directed towards the centre of our Galaxy but a few degrees away from it. We propose that the tangential acceleration component is caused by the bar of the Galaxy. Calculations based on our model suggest that the torque experienced by the region around the Sun is $\approx 2400\, km^2 s^{-2}$ per solar mass. The mass estimate for the bar is $\sim 1.6\pm0.3\times10^{10} M_\odot$. Using greatly improved data from Gaia DR2, we have computed the acceleration field to great accuracy by adapting the oPDF method (Han et al. 2016) locally and used the phase space coordinates of $\sim 4\times10^5$ stars within a distance of 0.5 kpc from the Sun. In the orbital arc method, the first step is to guess an acceleration field and then reconstruct the stellar orbits using this acceleration for all the stars within a specified region. Next, the stars are redistributed along orbits to check if the overall phase space distribution has changed. We repeat this process until we find an acceleration field that results in a new phase space distribution that is the same as the one that we started with; we have then recovered the true underlying acceleration.
description: 12 pages, 6 figures, accepted to MNRAS
Autonomous and Deterministic Supervised Fuzzy Clustering
Creators: name: Lim, Kian Ming
name: Loo, Chu Kiong
name: Lim, Way Soong
Publisher: name: figshare
Year: 2021
Subjects: subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences

description: A fuzzy model based on an enhanced supervised fuzzy clustering algorithm is presented in this paper. The supervised fuzzy clustering algorithm [6] allows each rule to represent more than one output with di®erent probabilities for each output. This algorithm implements k-means to initialize the fuzzy model. However, the main drawbacks of this approach are that the number of clusters is unknown and the initial positions of clusters are randomly generated. In this work, the initialization is done by the global k-means algorithm [1], which can autonomously determine the actual number of clusters needed and give a deterministic clustering result. In addition, the fast global k-means algorithm [1] is presented to improve the computation time. The model is tested on medical diagnosis benchmark data and Westland vibration data. The results obtained show that the model that uses the global k-means clustering algorithm [1] has higher accuracy when compared to a model that uses the k-means clustering algorithm. Besides that, the fast global k-means algorithm [1] also improved the computation time without degrading much the model performance.
Spontaneous and Stimulated Electron-Photon Interactions in Nanoscale Plasmonic Near Fields
Creators: name: Liebtrau, Matthias
name: Sivis, Murat
name: Feist, Armin
name: Lourenço-Martins, Hugo
name: Pazos-Pérez, Nicolas
name: Alvarez-Puebla, Ramon A.
name: de Abajo, F. Javier García
name: Polman, Albert
name: Ropers, Claus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate spatially-resolved measurements of spontaneous and stimulated electron-photon interactions in nanoscale optical near fields using electron energy-loss spectroscopy (EELS), cathodoluminescence spectroscopy (CL), and photon-induced near-field electron microscopy (PINEM). Specifically, we study resonant surface plasmon modes that are tightly confined to the tip apexes of an Au nanostar, enabling a direct correlation of EELS, CL, and PINEM on the same physical structure at the nanometer length scale. Complemented by numerical electromagnetic boundary-element method calculations, we discuss the spontaneous and stimulated electron-photon interaction strength and spatial dependence of our EELS, CL and PINEM distributions. We demonstrate that in the limit of an isolated tip mode, spatial variations in the electron-near field coupling are fully determined by the modal electric field profile, irrespective of the spontaneous (in EELS and CL) or stimulated nature (in PINEM) of the process. Yet we show that coupling to the tip modes crucially depends on the incident electron energy with a maximum at a few keV, depending on the proximity of the interaction to the tip apex. Our results provide elementary insights into spontaneous and stimulated electron-light-matter interactions at the nanoscale that have key implications for research on (quantum) coherent optical phenomena in electron microscopy.
description: 20 pages, 6 figures, 1 table
Super-resolution Imaging of the Protoplanetary Disk HD 142527 Using Sparse Modeling
Creators: name: Yamaguchi, Masayuki
name: Akiyama, Kazunori
name: Tsukagoshi, Takashi
name: Muto, Takayuki
name: Kataoka, Akimasa
name: Tazaki, Fumie
name: Ikeda, Shiro
name: Fukagawa, Misato
name: Honma, Mareki
name: Kawabe, Ryohei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: With an emphasis on improving the fidelity even in super-resolution regimes, new imaging techniques have been intensively developed over the last several years, which may provide substantial improvements to the interferometric observation of protoplanetary disks. In this study, sparse modeling (SpM) is applied for the first time to observational data sets taken by the Atacama Large Millimeter/submillimeter Array (ALMA). The two data sets used in this study were taken independently using different array configurations at Band 7 (330 GHz), targeting the protoplanetary disk around HD 142527; one in the shorter-baseline array configuration (~ 430 m), and the other in the longer-baseline array configuration (~ 1570 m). The image resolutions reconstructed from the two data sets are different by a factor of ~ 3. We confirm that the previously known disk structures appear on the images produced by both SpM and CLEAN at the standard beam size. The image reconstructed from the shorter-baseline data using the SpM matches that obtained with the longer-baseline data using CLEAN, achieving a super-resolution image from which a structure finer than the beam size can be reproduced. Our results demonstrate that on-going intensive development in the SpM imaging technique is beneficial to imaging with ALMA.
A note on the stability of slip channel flows
Creators: name: Lauga, Eric
name: Cossu, Carlo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the influence of slip boundary conditions on the modal and non-modal stability of pressure-driven channel flows. In accordance with previous results by Gersting (1974) (Phys. Fluids, 17) but in contradiction with the recent investigation of Chu (2004) (C.R. Mecanique, 332), we show that slip increases significantly the value of the critical Reynolds number for linear instability. The non-modal stability analysis however reveals that the slip has a very weak influence on the maximum transient energy growth of perturbations at subcritical Reynolds numbers. Slip boundary conditions are therefore not likely to have a significant effect on the transition to turbulence in channel flows.
Doping Dependence of the Critical Current and Irreversibility Field in Y1-xCaxBa2Cu3O7-delta
Creators: name: Semwal, Anita
name: Strickland, N. M.
name: Bubendorfer, A.
name: Naqib, S. H.
name: Goh, Swee Kuan
name: Williams, G. V. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Critical current measurements were made on thin films of YBa2Cu3O7-delta and Y0.8Ca0.2Ba2Cu3O7-delta produced by sol-gel and pulsed laser deposition, respectively. Both samples have high critical currents at low temperatures and the critical current, Jc, is largest in the overdoped Y0.8Ca0.2Ba2Cu3O7-delta thin film. Annealing studies show a large increase in Jc with increasing hole concentration and suggests that the maximum Jc should occur for overdoped samples. The very overdoped region of the superconducting phase diagram was probed by studying bulk ceramic Y0.8Ca0.2Ba2Cu3O7-delta samples, where it was found that the irreversibility field systematically increases with increasing hole concentration when scaled by the reduced temperature (t = (1 - T/Tc)).
description: To appear in Supercond.Sci.Technol.17 (2004)S1-S5
DC Josephson Effect in a Tomonaga-Luttinger Liquid
Creators: name: Takane, Yositake
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The dc Josephson effect in a one-dimensional Tomonaga-Luttinger (TL) liquid is studied on the basis of two bosonized models. We first consider a TL liquid sandwiched between two superconductors with a strong barrier at each interface. Both the interfaces are assumed to be perfect if the barrier potential is absent. We next consider a TL liquid with open boundaries, weakly coupled with two superconductors. Without putting strong barriers, we instead assume that the coupling at each interface is described by a tunnel junction. We calculate the Josephson current in each model, and find that the two models yield same results. The Josephson current is suppressed by repulsive electron-electron interactions. It is shown that the suppression is characterized by only the correlation exponent for the charge degrees of freedom. This result is inconsistent with a previously reported result, where the spin degrees of freedom also affects the suppression. The reason of this inconsistency is discussed.
description: 18 pages
Clubes de convergência nos municipios mineiros: uma análise via modelo threshold
Creators: name: Santos, Ricardo Bruno Nascimento Dos
name: Amorim, Airton Lopes
name: Coronel, Daniel Arruda
name: Braga, Marcelo Jose
name: Santos, Ricardo Bruno Nascimento Dos
name: Amorim, Airton Lopes
name: Coronel, Daniel Arruda
name: Braga, Marcelo Jose
Publisher: name: Unknown
Year: 2010
Subjects: subject: Community/Rural/Urban Development
subject: Research Methods/ Statistical Methods
subject: Income Convergence
subject: Threshold Effect
subject: Minas Gerais (Brazil)

description: This paper is makes an analysis of the process of convergence of income between the municipalities of the Minas Gerais (Brazil) in the period of 1980 to 2005, trying to identify the existence of clubs of convergence using a model threshold. Results indicated for the formation of four clubs of convergence, among them shows a process of convergence between the all clubs. Human capital proved to be significant in explaining the process of growth of the intermediate groups of municipalities richer. The results also indicated that the physical capital was significantly negative for explaining the process of economic growth of most rich clubs of convergence, demonstrating in this way, a negative role for public investment undertaken in the districts of the region.
Asymptotic Freedom of Elastic Strings and Barriers
Creators: name: Orland, Peter
name: Xiao, Jing
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the problem of a quantized elastic string in the presence of an impenetrable wall. This is a two-dimensional field theory of an N-component real scalar field $ϕ$ which becomes interacting through the restriction that the magnitude of $ϕ$ is less than $ϕ_{\rm max}$, for a spherical wall of radius $ϕ_{\rm max}$. The N=1 case is a string vibrating in a plane between two straight walls. We review a simple nonperturbative argument that there is a gap in the spectrum, with asymptotically-free behavior in the coupling (which is the reciprocal of $ϕ_{\rm max}$) for N greater than or equal to one. This scaling behavior of the mass gap has been disputed in some of the recent literature. We find, however, that perturbation theory and the 1/N expansion each confirms that these theories are asymptotically free. The large N limit coincides with that of the O(N) nonlinear sigma model. A theta parameter exists for the N=2 model, which describes a string confined to the interior of a cylinder of radius $ϕ_{\rm max}$.
description: Text slightly improved, bibilography corrected, more typos corrected, still Latex 7 pages
МЕТАЛЛУРГИЧЕСКАЯ ОБРАБОТКА И ОБОГАЩЕНИЕ МЕДНЫХ РУД
Creators: name: Турдиев, Шаҳбоз
name: Маллаев, Шамшод
Publisher: name: Zenodo
Year: 2025

description: Медь является одним из важнейших цветных металлов, широко используемых в различных отраслях промышленности, таких как электротехника, строительство, машиностроение и химическая индустрия. Благодаря высокой электропроводности, коррозионной стойкости и пластичности, медь играет ключевую роль в производстве электрических кабелей, теплообменников, трубопроводов и различных сплавов.
Sign of the crossed conductances at a FSF double interface
Creators: name: Mélin, R.
name: Feinberg, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Crossed conductance in hybrid Ferromagnet / Superconductor / Ferromagnet (FSF) structures results from the competition between normal transmission and Andreev reflection channels. Crossed Andreev reflection (CAR) and elastic cotunneling (EC) between the ferromagnets are dressed by local Andreev reflections, which play an important role for transparent enough interfaces and intermediate spin polarizations. This modifies the simple result previously obtained at lowest order, and can explain the sign of the crossed resistances in a recent experiment [D. Beckmann {\sl et al.}, cond-mat/0404360]. This holds both in the multiterminal hybrid structure model (where phase averaging over the Fermi oscillations is introduced ``by hand'' within the approximation of a single non local process) and for infinite planar interfaces (where phase averaging naturally results in the microscopic solution with multiple non local processes).
description: 9 pages, 7 figures
Chang's lemma via Pinsker's inequality
Creators: name: Hambardzumyan, Lianna
name: Li, Yaqiao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Computational Complexity (cs.CC)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Extending the idea in [Impagliazzo, R., Moore, C. and Russell, A., An entropic proof of Chang's inequality. SIAM Journal on Discrete Mathematics, 28(1), pp.173-176.] we give a short information theoretic proof for Chang's lemma that is based on Pinsker's inequality.
description: 4 pages
Designing Cost Effective Auctions as Instruments to Reduce Nutrients Run-off from Agriculture into the Baltic Sea - An Experimental Study
Creators: name: Larsen, Karen
name: Ollikainen, Markku
name: Larsen, Karen
name: Ollikainen, Markku
Publisher: name: Unknown
Year: 2011
Subjects: Resource /Energy Economics and Policy

description: This research studies the use of auctions for reducing leaching of phosphorus and nitrogen into the Baltic Sea. Auctions are introduced as a tool for creating environmental contracts in agriculture for the first time in Finland. A controlled laboratory experiment is used to analyze the effect of introducing a bundle mechanism in the auction. Landholders submit sealed bids on multiple parcels in a one shot reverse auction. Each parcel is assigned an environmental quality and varies in size. In one treatment landholders can offer bids on environmental contracts for their parcels individually. In the other treatment landholders are given the opportunity to bundle parcels of land together when submitting bids as well as submitting bids for individual parcels. The results suggest that the bundle mechanism increase environmental efficiency of the auction compared to the individual parcel auction. In the treatment with individual parcel bids environmental value significantly affects over half of landholders’ offers. The bundle treatment however shows sign of a cognitive bias where landholders use the hectare size to determine their offers.
Dark time(s) : non-linear narratives in the postmodern film noir
Creators: name: Poulin, Brook
Publisher: name: University of British Columbia
Year: 2009

description: In cinematic circles, much has been made of the film noir genre. While debates continue to circulate about what exactly film noir is and how films can be seen to fit this model, contemporary examples of the film noir produced in the last ten years have begun to exhibit an exciting and inventive postmodern tendency: a non-linear narrative structure. Narratives are scrambles, run backwards, replay a significant moment several times or are a blend of two or more of these innovative narrative tropes. I will be looking exclusively at these films and have termed them post/neo/noirs. Thus, those films that feature an intersection between the film noir, the postmodern and feature an unconventional and non-linear narrative structure will form the basis for this study. I will first present a brief summary of the existing scholarship dedicated to film noir as well as my own original template of essential film noir characteristics. Next, a framework outlining the fundamental and recurring characteristics of postmodern theory will be established, as this will be the major theoretical structure used to dissect and analyze the films within this thesis. Chapters l-IV will act to show the distinct types of post/neo/noirs, provide a close analysis of ten recent films, and show how certain films and sub-categories of the post/neo/noir emerge as more successful and important cultural texts. The argumentation and subsequent conclusions of this thesis will be threefold: a) The post/neo/noir sub-genre is fundamentally postmodern and produces transnational texts that embrace these concerns. b) Only those post/neo/noirs that fully incorporate both postmodern filmmaking impulses and a deft merging of film form and content are effective at producing a significant commentary. c) Not only is film noir a stable genre category, it can be seen as a dominant one, as films that fit the film noir framework can be considered film noir regardless of what other genres they might seem to otherwise belong to. d) The post/neo/noir has the potential to offer a vital, profound and complex social criticism and is designed for consumption and interpretation by a sophisticated postmodern audience.
Multi-criticality of the three-dimensional Ising model with plaquette interactions: An extension of Novotny's transfer-matrix formalism
Creators: name: Nishiyama, Yoshihiro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Three-dimensional Ising model with the plaquette-type (next-nearest-neighbor and four-spin) interactions is investigated numerically. This extended Ising model, the so-called gonihedric model, was introduced by Savvidy and Wegner as a discretized version of the interacting (closed) surfaces without surface tension. The gonihedric model is notorious for its slow relaxation to the thermal equilibrium (glassy behavior), which deteriorate the efficiency of the Monte Carlo sampling. We employ the transfer-matrix (TM) method, implementing Novotny's idea, which enables us to treat arbitrary number of spins $N$ for one TM slice even in three dimensions. This arbitrariness admits systematic finite-size-scaling analyses. Accepting the extended parameter space by Cirillo and co-worker, we analyzed the (multi) criticality of the gonihedric model for N \le 13. Thereby, we found that, as first noted by Cirillo and co-worker analytically (cluster-variation method), the data are well described by the multi-critical (crossover) scaling theory. That is, the previously reported nonstandard criticality for the gonihedric model is reconciled with a crossover exponent and the ordinary three-dimensional-Ising universality class. We estimate the crossover exponent and the correlation-length critical exponent at the multi-critical point as ϕ=0.6(2) and ν=0.45(15), respectively.
An Economic-Psychological Model of Sustainable Food Consumption
Creators: name: Lombardini, Chiara
name: Lankoski, Leena
name: Lombardini, Chiara
name: Lankoski, Leena
Publisher: name: Unknown
Year: 2011
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: bounded rationality
subject: bounded self-control
subject: habits
subject: identity
subject: social and moral norms
subject: sustainable food consumption

description: This paper proposes a novel economic-psychological model of individual food consumption and food waste that recognizes individuals as social and moral beings who are boundedly rational and have limited capacity for self-control. The model identifies five components of individuals’ utility that correspond to five modes of being or selves: the hedonic agent, the social agent, the moral agent, the health-conscious agent and the habits-driven agent. In the model, individuals maximize this composite utility given their budget and effort constraints. We apply the model to analyze policies that can support the adoption of sustainable food consumption practices.
Semiclassical dynamics of a dark soliton in a one-dimensional bosonic superfluid in an optical lattice
Creators: name: Ozaki, Yusuke
name: Nagao, Kazuma
name: Danshita, Ippei
name: Kasamatsu, Kenichi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study quantum dynamics of a dark soliton in a one-dimensional Bose gas in an optical lattice within the truncated Wigner approximation. A previous work has revealed that in the absence of quantum fluctuations, dynamical stability of the dark soliton significantly depends on whether its phase kink is located at a lattice site or a link of two neighboring sites. It has also shown that the dark soliton is unstable in a regime of strong quantum fluctuations regardless of the phase-kink position. To bridge the gap between the classical and strongly quantum regimes, we investigate the dynamical stability of the dark soliton in a regime of weak quantum fluctuations. We find that the position dependence of the dynamical stability gradually diminishes and eventually vanishes as the strength of quantum fluctuations increases. This classical-to-quantum crossover of the soliton stability remains even in the presence of a parabolic trapping potential. We suggest that the crossover behavior can be used for experimentally diagnosing whether the instability of a dark soliton is due to quantum fluctuations or classical dynamical instability.
description: 12 pages, 11 figures
Filaments as Possible Signatures of Magnetic Field Structure in Planetary Nebulae
Creators: name: Huggins, P. J.
name: Manley, S. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We draw attention to the extreme filamentary structures seen in high-resolution optical images of certain planetary nebulae. We determine the physical properties of the filaments in the nebulae IC 418, NGC 3132, and NGC 6537, and based on their large length-to-width ratios, longitudinal coherence, and morphology, we suggest that they may be signatures of the underlying magnetic field. The fields needed for the coherence of the filaments are probably consistent with those measured in the precursor circumstellar envelopes. The filaments suggest that magnetic fields in planetary nebulae may have a localized and thread-like geometry.
description: 26 pages with 7 figures. To be published in PASP. For full resolution images see http://physics.nyu.edu/~pjh1
Exploring $J/ψ$ production mechanism at the future Electron-Ion Collider
Creators: name: Qiu, Jian-Wei
name: Wang, Xiang-Peng
name: Xing, Hongxi
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose to use transverse momentum $p_T$ distribution of $J/ψ$ production at the future Electron Ion Collider (EIC) to explore the production mechanism of heavy quarkonia in high energy collisions. We apply QCD and QED collinear factorization to the production of a $c\bar{c}$ pair at high $p_T$, and non-relativistic QCD factorization to the hadronization of the pair to a $J/ψ$. We evaluate $J/ψ$ $p_T$-distribution at both leading and next-to-leading order in strong coupling, and show that production rates for various color-spin channels of a $c\bar{c}$ pair in electron-hadron collisions are very different from that in hadron-hadron collisions, which provides a strong discriminative power to determine various transition rates for the pair to become a $J/ψ$. We predict that the $J/ψ$ produced in electron-hadron collisions is likely unpolarized, and the production is an ideal probe for gluon distribution of colliding hadron (or nucleus). We find that the $J/ψ$ production is dominated by the color-octet channel, providing an excellent probe to explore the gluon medium in large nuclei at the EIC.
description: 6 pages, 6 figures