cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comment on "Detection and characterization of 0.5-8 MeV neutrons near Mercury: Evidence for a solar origin"
Creators: name: Share, Gerald
name: Murphy, Ronald
name: Tylka, Allan
name: Dennis, Brian
name: Ryan, James
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We argue that the hour-long neutron transient detected by the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) Neutron Spectrometer beginning at 15:45 UT on 2011 June 4 is due to secondary neutrons from energetic protons interacting in the spacecraft. The protons were probably accelerated by a shock that passed the spacecraft about thirty minutes earlier. We reach this conclusion after a study of data from the MESSENGER neutron spectrometer, gamma-ray spectrometer, X-ray Spectrometer, and Energetic Particle Spectrometer, and from the particle spectrometers on STEREO A. Our conclusion differs markedly from that given by Lawrence et al. [2014] who claimed that there is "strong evidence" that the neutrons were produced by the interaction of ions in the solar atmosphere. We identify significant faults with the authors' arguments that led them to that conclusion.
description: Submitted for publication in Journal of Geophysical Research Space Physics
Supplementary materials to World Mycotoxin Journal Manuscript 20222825: Effect of cleaning, milling, and cooking on the reduction of deoxynivalenol in freshly harvested rice
Creators: name: Chen, X.X.
name: Wu, D.L.
name: Wu, X.L.
name: Mokoena, M.P.
name: Olaniran, A.O.
name: Shi, J.R.
name: Xu, J.H.
name: Dong, F.
Publisher: name: Brill Online
Year: 2023
Subjects: classificationCode: 300605
subject: Food safety, traceability, certification and authenticity

description: Fusarium mycotoxins were frequently present in freshly harvested rice samples caused by Fusarium head blight in China recently. Due to the importance of rice and the risks associated with mycotoxins, the fate of Fusarium mycotoxins in rice was evaluated by physical methods. In the present study, a total of 157 freshly harvested rice samples were collected from fields in Jiangsu Province. Mycotoxin analysis showed that only Fusarium mycotoxins were found in these samples, with deoxynivalenol (DON) being the major mycotoxin. Twenty-three freshly harvested rice samples containing concentrations of DON higher than 200 μg/kg were selected for cleaning and milling. Compared with air or gravity separation, the combined air and gravity separation was the most effective cleaning method to decrease the content of DON. After milling, brown and white rice intended for human consumption presented lower level of DON than freshly harvested rice, husks, and bran. Three types of brown and white rice with different contents of DON were chosen for cooking. Compared with other treatments, preboiled was the most effective method to reduce DON in both brown and white rice. The results of this study improve our understanding of the transfer ratios of DON and the development of effective control measures during the postharvest stage.
Regulation of Cl- channels in normal and cystic fibrosis airway epithelial cells by extracellular ATP.
Creators: name: Fullton, J. M.
name: Mason, S. J.
name: Boucher, R. C.
name: Clarke, L. L.
name: Stutts, M. J.
name: Chinet, T. C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: The rate of Cl- secretion by human airway epithelium is determined, in part, by apical cell membrane Cl- conductance. In cystic fibrosis airway epithelia, defective regulation of Cl- conductance decreases the capability to secrete Cl-. Here we report that extracytosolic ATP in the luminal bath of cultured human airway epithelia increased transepithelial Cl- secretion and apical membrane Cl- permeability. Single-channel studies in excised membrane patches revealed that ATP increased the open probability of outward rectifying Cl- channels. The latter effect occurs through a receptor mechanism that requires no identified soluble second messengers and is insensitive to probes of G protein function. These results demonstrate a mode of regulation of anion channels by binding ATP at the extracellular surface. Regulation of Cl- conductance by external ATP is preserved in cystic fibrosis airway epithelia.
title: Corrigendum: Building a realistic, scalable memory model with independent engrams using a homeostatic mechanism
Creators: name: Kaster, Marvin
name: Czappa, Fabian
name: Butz-Ostendorf, Markus
name: Wolf, Felix
Publisher: name: Frontiers Media S.A.
Year: 2024

description: A corrigendum on: Building a realistic, scalable memory model with independent engrams using a homeostatic mechanism
e-shape pilot S7-P5 - Seasonal preparedness
Creators: name: VAJDA, Andrea
Publisher: name: GEO Knowledge Hub
Year: 2022
Subjects: Climate Variability
Seasonal Forecast
Transportation and Tourism
e-shape
Finnish Meteorological Institute
European Commission
H2020
Group on Earth Observation
GEO
EuroGEO
Seasonal Preparedness
Climate Showcase

description: Transportation and tourism sectors are dependent on inter-annual climate variability. In winter, driving safety is strongly weather dependent due to slippery road surface conditions. Timely installation of winter tires is essential when temperature falls to near 0°C and roads might be covered by ice and snow. However, the time of winter tire installation and thus their distribution to the customers varies from year to year depending on weather conditions. The tailored sub-seasonal and seasonal forecast products for winter tire season and safety driving conditions will allow tire companies to plan the distribution of right tire types and the seasonal management, to increase their economic benefit and improve transportation safety. As climate is key resource also for tourism, climate change is slowly entering into decision-making in a range of tourism stakeholders. Climate change may create economic opportunities as well, for instance, in the Mediterranean region the touristic season is foreseen to lengthen, increasing the flows of the tourists. Tourism stakeholders need information on future seasonal climatic conditions during different seasons that make possible for them to adapt to the forthcoming changes in the length and quality of climate-dependent tourism seasons. The newly created seasonal and short-term forecast tourist indicators for the selected UNESCO World Heritage Sites in Greece foster the competitive relationships between destinations precisely determining the tourism demand and thus the profitability of tourism enterprises.AcknowledgmentThe e-shape project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement 820852.
Role of a vitronectin-like molecule in embryo adhesion of the brown alga Fucus.
Creators: name: Wagner, V. T.
name: Quatrano, R. S.
name: Brian, L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: The rhizoid cell of the two-celled embryo of the brown alga Fucus is structurally and functionally differentiated from the thallus cell. The rhizoid cell is highly polar and transports directionally components of the cell wall to its elongating tip, which attaches the developing embryo to the substratum. Polyclonal antibodies to human vitronectin (Vn) recognize a vitronectin-like glycoprotein (Vn-F) in extracts of zygotes and two-celled embryos of Fucus, with a molecular mass (approximately 62 kDa) similar to that of human Vn. The specificity of the immunological cross-reactivity of Vn-F to rabbit polyclonal antibodies made to human Vn is demonstrated by competition experiments using pure human Vn and monospecific antibodies generated toward Vn-F. Vn-F possesses affinities for glass and heparin that are identical to those of human Vn. Immunolocalization and subcellular fractionation results demonstrate that Vn-F is localized first in the cytoplasm of the zygote, which is followed by the polar transport of Vn-F to its exclusive localization in the cell wall of the elongating rhizoid tip. Vn does not localize to the rhizoid tip under culture conditions that prevent two-celled embryos from attaching. Furthermore, an adhesion assay demonstrates that two-celled Fucus embryos do not adhere to the substratum in the presence of the Vn antibody, suggesting that the Vn-F in this brown alga not only possesses structural similarity to mammalian Vn but may also have a
title: Einführung funktioneller Gruppen in den siebengliedrigen Ring des Azulens
Creators: name: Hünig, Siegfried
name: Hafner, Klaus
name: Ort, Burkhard
name: Müller, Manfred
Publisher: name: Wiley-VCH
Year: 2023

description: Die Substitution in 4- und 6-Position des Azulens (1) wird durch Einsatz neuer Nucleophile (dehydrierende Aufarbeitung) erweitert: Lithiierte Methylphosphonsäureester und Formaldehyd-dithioacetale liefern die 4- und 6-Azulenylmethylphosphonsäureester 4 – 7 und 4- und 6-Azulencarbaldehyd-dithioacetale 11, 15 und 25. Diese lassen sich zu den entsprechenden Aldehyden spalten. Zweckmäßiger werden 4- und 6-Azulencarbaldehyd (23 und 27) über die Reaktion von 1 mit Lithium-(diethylamino)acetonitril synthetisiert. Das Verhältnis 4:6-Substitution in Abhängigkeit vom Nucleophil wird diskutiert.
Spontaneous incorporation of the glycosyl-phosphatidylinositol-linked protein Thy-1 into cell membranes.
Creators: name: Hou, Y.
name: Jacobson, K.
name: Schmidt, W. G.
name: Zhang, F.
name: Williams, A. F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: Thy-1 is a membrane protein that is attached to the plasma membrane by a glycosyl-phosphatidylinositol anchor. Purified rat brain Thy-1 could be reincorporated into the plasma membrane of murine Thy-1- cells directly from aqueous suspension and without the use of detergents. A peripheral staining pattern similar to that observed for endogenous Thy-1 was achieved. Treatment with phosphatidylinositol-specific phospholipase C removed nearly all antibody staining due to either endogenous or inserted Thy-1. Fluorescence recovery after photobleaching (FRAP) was used to compare the lateral mobility of endogenous and inserted Thy-1. Both forms exhibited large lateral diffusion coefficients, but with a substantial immobile fraction (approximately 50%) indicating that the immobile fraction was not due either to chemical differences between inserted and native Thy-1 or to some surface Thy-1 molecules having a protein anchor. However, the inserted Thy-1 failed to activate mouse T lymphocytes upon crosslinking as assayed by [3H]thymidine uptake. Since Thy-1 could be directly labeled with rhodamine, the effect of the size of the labeling ligand on the mobility obtained by the FRAP technique could be explored. Rhodamine-conjugated MRC-OX7 monoclonal antibody or its fragments [R-F(ab)2 or R-Fab] were compared with rhodamine as labels for Thy-1. The measured diffusion coefficients were 1.6 x 10(-9), 2.0 x 10(-9), and 3.2 x 10(-9) cm2/sec for Thy-1 labeled with R-F(ab)2, R-Fab, and rhodamine, respectively; mobile fractions were all in the 40-50% range. Thus, the size of the ligand affects the lateral mobility of this labeled membrane protein to a measurable extent.
Probing the Terrestrial Regions of Planetary Systems: Warm Debris Disks with Emission Features
Creators: name: Ballering, Nicholas P.
name: Rieke, George H.
name: Gaspar, Andras
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Observations of debris disks allow for the study of planetary systems, even where planets have not been detected. However, debris disks are often only characterized by unresolved infrared excesses that resemble featureless blackbodies, and the location of the emitting dust is uncertain due to a degeneracy with the dust grain properties. Here we characterize the Spitzer IRS spectra of 22 debris disks exhibiting 10 micron silicate emission features. Such features arise from small warm dust grains, and their presence can significantly constrain the orbital location of the emitting debris. We find that these features can be explained by the presence of an additional dust component in the terrestrial zones of the planetary systems, i.e. an exozodiacal belt. Aside from possessing exozodiacal dust, these debris disks are not particularly unique; their minimum grain sizes are consistent with the blowout sizes of their systems, and their brightnesses are comparable to those of featureless warm debris disks. These disks are in systems with a range of ages, although the older systems with features are found only around A-type stars. The features in young systems may be signatures of terrestrial planet formation. Analyzing the spectra of unresolved debris disks with emission features may be one of the simplest and most accessible ways to study the terrestrial regions of planetary systems.
description: Accepted for publication in ApJ
Tumor necrosis factor alpha response elements in the HLA-DRA promoter: identification of a tumor necrosis factor alpha-induced DNA-protein complex in astrocytes.
Creators: name: Ting, J. P.
name: Benveniste, E. N.
name: Moses, H.
name: Panek, R. B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1992

description: The cytokine tumor necrosis factor alpha (TNF-alpha) alone does not induce class II major histocompatibility complex (MHC) expression in most primary cells but can regulate ongoing class II expression in either a positive or negative fashion. The mechanism(s) by which TNF-alpha enhances interferon gamma (IFN-gamma)-induced class II expression was examined in a primary cell type, the astrocyte, by transient transfection of the HLA-DRA promoter linked to a chloramphenicol acetyltransferase reporter gene (DRA-CAT). We show that TNF-alpha, while having no effect on its own, can synergize with IFN-gamma to increase the level of promoter activity of a DRA-CAT construct. Three known sequences--W, X, and Y--are required for TNF-alpha enhancement of IFN-gamma-induced promoter activity. The corollary effect of TNF-alpha on DNA-binding proteins specific for these elements was examined. A previous report described a DNA-binding protein, IFN-gamma-enhanced factor X (IFNEX), which is upregulated by IFN-gamma in astrocytes and is specific for the X box of the DRA promoter. In this study, we found that TNF-alpha alone did not induce any nuclear proteins; however, combined treatment of astrocytes with both IFN-gamma and TNF-alpha induced a DNA-protein complex of slower electrophoretic mobility than IFNEX. The TNF-alpha-induced complex (TIC-X) has specificity for the X element of the DRA promoter. These results suggest a mechanism by which TNF-alpha enhances IFN-gamma-induced class II MHC expression via the formation of TIC-X.
The Role of Alternative Investments in Diversified Portfolios: A Study of Returns, Risk, and Correlation, Taking Examples Under Indian Context
Creators: name: Roy, Suvendu Narayan
Publisher: name: Zenodo
Year: 2024

description: Background: Traditional asset classes have been the cornerstone of investment portfolios for decades, but with increasing market volatility and decreasing returns,investors are seeking alternative investment strategies to enhance portfolio performance and reduce risk.Purpose: : This study aims to investigate the role of alternative investments in diversified portfolios, examining their returns, risk, and correlation with traditional asset classes.Methodology: A comprehensive review of existing literature and a quantitative analysis of historical data on alternative investments, including private equity, hedge funds, real estate, and commodities, will be conducted.Results: The study expects to find that alternative investments can enhance portfolio returns, reduce risk, and provide diversification benefits when combined with traditional asset classes.Implications: The findings of this study will provide valuable insights for investors, portfolio managers, and financial advisors seeking to optimize portfolio performance and reduce risk through alternative investments.This study examines the role of alternative investments in diversified portfolios, investigating their returns, risk, and correlation with traditional asset classes. Acomprehensive review of existing literature and a quantitative analysis of historical data on alternative investments are conducted. The study finds that alternative investments can enhance portfolio returns, reduce risk, and provide diversification benefits when combined with traditional asset classes. The findings of this study provide valuable insights for investors, portfolio managers, and financial advisors seeking to optimize portfolio performance and reduce risk through alternative investments. The study contributes to the existing literature on alternative investments and portfolio diversification, providing a comprehensive analysis of the role of alternative investments in diversified portfolios
Temperature constraints on the coldest brown dwarf known WISE 0855-0714
Creators: name: Beamín, J. C.
name: Ivanov, V. D.
name: Bayo, A.
name: Mužić, K.
name: Boffin, H. M. J.
name: Allard, F.
name: Homeier, D.
name: Minniti, D.
name: Gromadzki, M.
name: Kurtev, R.
name: Lodieu, N.
name: Martin, E. L.
name: Mendez, R. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. Nearby isolated planetary mass objects are beginning to be discovered, but their individual properties are poorly constrained because their low surface temperatures and strong molecular self-absorption make them extremely faint. Aims. We aimed to detect the near infrared emission of the coldest brown dwarf (BD) found so far, WISE0855$-$0714, located $\sim$2.2 pc away, and to improve its temperature estimate (T$_{\rm eff}$= 225-260 K) from a comparison with state-of-the-art models of BD atmospheres. Methods. We observed the field containing WISE0855-0714 with HAWK-I at the VLT in the $Y$ band. For BDs with T$_{\rm eff}24.4 mag at 3-$σ$ level, leading to Y-[4.5]>10.5. Combining this limit with previous detections and upper limits at other wavelengths, WISE0855$-$0714 is confirmed as the reddest BD detected, further supporting its status as the coldest known brown dwarf. We applied spectral energy distribution fitting with collections of models from two independent groups for extremely cool BD atmospheres leading to an effective temperature of T$_{\rm eff}
description: 4 pages, 4 figures. A&A letter Accepted
Allele-specific B pocket transplant in class I major histocompatibility complex protein changes requirement for anchor residue at P2 of peptide.
Creators: name: Rowland-Jones, S. L.
name: Frelinger, J. A.
name: Colbert, R. A.
name: McMichael, A. J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: To investigate the role of an anchoring pocket in allele-specific peptide presentation by a major histocompatibility complex class I molecule, we
title: Autonomous Robot Navigation in Unknown Terrains Using Parallel Numerical Artificial Potential Fields
Creators: name: Schneider, John C.
Publisher: name: Old Dominion University Libraries
Year: 1994

description: We present a new artificial potential field formulation for resolution complete robot navigation that unifies the purely geometric path planning problem with the lower level force control problem. Our formulation is designed for numerical computation over a massively parallel mesh of processors and is responsive to newly discovered terrain features. It does not suffer from many of the problems commonly associated with potential fields and with adequate resolution provides provably correct, collision free convergence to the goal. In addition, our formulation supports many desirable, practical features required for implementation, such as bounded actuator torques, attainable incremental constructibility, realizable computation and wide obstacle clearance. Its presentation here represents the first practicable artificial potential field for resolution complete robot navigation and control in known or unknown terrains.

We provide general, parallel algorithms for constructing numerical artificial potential fields using a massively parallel processor mesh. We have successfully implemented these algorithms in a simulated environment. Illustrations throughout this thesis present our simulation results.
"This is not the soldier you know": treason trials and the unmaking of Turkey’s military
Creators: name: Kaptan, Senem
Publisher: name: No Publisher Supplied
Year: 2018

description: My dissertation project is an ethnographic examination of the controversial civilian trials of military officers accused of treason and coup plotting in contemporary Turkey. Since 2008, hundreds of officers of the Turkish Armed Forces have been on trial in multiple cases with allegations ranging from forming a terrorist organization within the state to leaking of state secrets for purposes of military espionage and plotting a coup to overthrow the government. Controversial from beginning to end, the trials of these military officers have been unprecedented in the country’s history where the military has had persistent involvement in politics with rather strong legal immunity. The trials, therefore, constitute a momentous attempt to challenge the military’s legitimacy and debunk its authority. Yet, despite being portrayed as a switch from a historically pervasive military exceptionalism to the rule of law, the whole process has been enmeshed in a web of legal complexity with unclear allegations, multiple waves of police operations, internments and arrests of hundreds of people, and indictments totaling thousands of pages of documents. My dissertation focuses on one of these cases in particular–the Sledgehammer coup trial, an alleged coup plot dating back to 2003, in which 365 officers were indicted in 2010, all of whom were later acquitted in 2015 (despite initially being sentenced to 16-20 years in prison) due to the presence of fabricated evidence. Aiming to capture the tension between a historically pervasive military exceptionalism and the notion of the rule of law, as well as the actors caught between that tension, my dissertation project analyzes what the trials have meant for the military members who, once privileged representatives of the state often situated outside and above civilian legal frameworks, have had to step into the public arena and grapple with their social downfall in multiple realms. Through an eighteen-month ethnographic research that goes from the courtroom and prison to the public protests on the streets of Istanbul and Ankara, and from the private opinion of military officers in good standing to the disrupted lives of the families of the accused servicemen and the public reaction against them, this dissertation project analyzes how, and to what effect, the rhetoric of the rule of law can become a tool to dismantle militaries, revert the exceptional status under which they operate, and in so doing, rearticulate the nation anew.
Alteration of reproductive function but not prenatal sexual development after insertional disruption of the mouse estrogen receptor gene.
Creators: name: Couse, J. F.
name: Smithies, O.
name: Korach, K. S.
name: Golding, T. S.
name: Moyer, J. S.
name: Lubahn, D. B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: Estrogen receptor and its ligand, estradiol, have long been thought to be essential for survival, fertility, and female sexual differentiation and development. Consistent with this proposed crucial role, no human estrogen receptor gene mutations are known, unlike the adrogen receptor, where many loss of function mutations have been found. We have generated mutant mice lacking responsiveness to estradiol by male and female animals survive to adulthood with normal gross external phenotypes. Females are infertile; males have a decreased fertility. Females have hypoplastic uteri and hyperemic ovaries with no detectable corpora lutea.Estrogen receptor and its ligand, estradiol, have long been thought to be essential for survival, fertility, and female sexual differentiation and development. Consistent with this proposed crucial role, no human estrogen receptor gene mutations are known, unlike the adrogen receptor, where many loss of function mutations have been found. We have generated mutant mice lacking responsiveness to estradiol by male and female animals survive to adulthood with normal gross external phenotypes. Females are infertile; males have a decreased fertility. Females have hypoplastic uteri and hyperemic ovaries with no detectable corpora lutea.
Gap Clearing by Planets in a Collisional Debris Disk
Creators: name: Nesvold, Erika R.
name: Kuchner, Marc J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We apply our 3D debris disk model, SMACK, to simulate a planet on a circular orbit near a ring of planetesimals that are experiencing destructive collisions. Previous simulations of a planet opening a gap in a collisionless debris disk have found that the width of the gap scales as the planet mass to the 2/7th power ($α$=2/7). We find that the gap sizes in a collisional disk still obey a power law scaling with planet mass, but that the index alpha of the power law depends on the age of the system t relative to the collisional timescale $t_{coll}$ of the disk by $α= 0.32(t/t_{coll})^{-0.04}$, with inferred planet masses up to five times smaller than those predicted by the classical gap law. The increased gap sizes likely stem from the interaction between the collisions and the mean motion resonances near the chaotic zone. We investigate the effects of the initial eccentricity distribution of the disk particles and find a negligible effect on the gap size at Jovian planet masses, since collisions tend to erase memory of the initial particle eccentricity distributions. Finally, we find that the presence of Trojan analogs is a potentially powerful diagnostic of planets in the mass range ~1-10 $M_{jup}$. We apply our model to place new upper limits on planets around Fomalhaut, HR 4796 A, HD 202628, HD 181327, and $β$ Pictoris.
description: 11 pages, 8 figures, Accepted for publication in ApJ
Amylin modulates beta-cell glucose sensing via effects on stimulus-secretion coupling.
Creators: name: Dukes, I. D.
name: Oxford, G. S.
name: Wagoner, P. K.
name: Worley, J. F.
name: Chen, C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: The release of insulin from the pancreatic beta cell is dependent upon a complex interplay between stimulators and inhibitors. Recently, amylin, a peptide secreted by pancreatic beta cells, has been implicated in the development of type II (noninsulin dependent) diabetes through its modulation of the peripheral effects of insulin. However, the effect of amylin on insulin secretion from the beta cell has remained controversial. It is reported here that in single beta cells exhibiting normal glucose sensing, amylin causes membrane hyperpolarization, increases in net outward current, and reductions in insulin secretion. In contrast, in cells with abnormal glucose sensing (e.g., from db/db diabetic mice), amylin has no effect on electrical activity or secretion. Thus, amylin's effects on excitation-secretion coupling in the beta cell of the pancreas appear to be linked to the cell's capacity for normal glucose sensing.
Supplementary document for Hyperspectral Image Super-resolution via Multi-stage Scheme without Employing Spatial Degradation - 6039757.pdf
Creators: name: Cao, Xuheng
name: Lian, Yusheng
name: Liu, Zilong
name: Zhou, Han
name: Bin, Wang
name: Zhang, Wan
name: Huang, Beiqing
Publisher: name: Optica Publishing Group
Year: 2022
Subjects: Uncategorized

description: The supplement document of the mainfile
TaskSnap: Fostering One Task at a Time With Context Snapshots
Creators: name: Anonymous, Anonymous
Publisher: name: Zenodo
Year: 2024

description: This repository contains complementary information for the paper TaskSnap: Fostering One Task at a Time With Context Snapshots. It includes interview questions and information about the tasks:

descriptions and solution changesets for Change Task 1 (Support Rounding of Images) and Change Task 2 (Copy/Paste Text behaviors).  

Images of the actual and expected state of the application for Change Tasks 1 and 2.

description of the seeking-information task.

codebase.
A Correction to the Immirizi Parameter of SU(2) Spin Networks
Creators: name: Sadiq, Muhammad
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The elegant predictions of loop quantum gravity are obscured by the free Immirizi parameter. Dreyer (2003), considering the asymptotic quasinormal modes spectrum of a black hole, proposed that the Immirizi parameter may be fixed by letting the j=1 transitions of spin networks as the dominant processes contributing to the black hole area, as opposed to the expected j=1/2 transitions. This suggested that the gauge group of the theory might be SO(3) rather than SU(2). Corichi (2003), maintaining SU(2) as the underlying gauge group, and invoking the principle of local fermion-number conservation, reported the same value of the Immirizi parameter for j=1 processes as obtained by Dreyer. In this note, preserving the SU(2) structure of the theory, and considering j=1 transitions as the dominant processes, we point out that the value of the Immirizi parameter is in fact twice the value reported by these authors. We arrive at this result by assuming the asymptotic quasinormal modes themselves as dynamical systems obeying SU(2) symmetry.
description: 7 pages
Crystal structure of cyclophilin A complexed with substrate Ala-Pro suggests a solvent-assisted mechanism of cis-trans isomerization.
Creators: name: Ke, H.
name: Mayrose, D.
name: Cao, W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: Cyclophilin is a binding protein for the immunosuppressive drug cyclosporin A and is also an enzyme with peptidyl-prolyl cis-trans isomerase activity. The crystal structure of cyclophilin A complexed with the substrate Ala-Pro has been determined and refined to an R factor of 0.196 at 1.64-A resolution. The structure shows that only the cis form of Ala-Pro binds cyclophilin A despite the fact that Ala-Pro has an equilibrium majority of the trans form in solution. Simulation of the cis-trans isomerization in an ESV10 graphics system suggests a solvent-assisted mechanism in which first the peptidyl-prolyl bond is desolvated at the ground state by binding to the hydrophobic pocket of the active site, and later the intermediate state is stabilized by a hydrogen bond between the carbonyl oxygen of the amide bond and a bound water molecule.
Crystal structures of the monofunctional chorismate mutase from Bacillus subtilis and its complex with a transition state analog.
Creators: name: Chook, Y. M.
name: Lipscomb, W. N.
name: Ke, H.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: We have solved the structure of a chorismate mutase (chorismate pyruvatemutase, EC 5.4.99.5), the 1.9-A crystal structure of the monofunctional enzyme from Bacillus subtilis. The structure determination process was an unusual one, involving 12 monomers of the enzyme in the asymmetric unit. This structure was solved by the multiple isomorphous replacement method with partial structure phase combination and molecular averaging. The final model, which includes 1380 residues and 522 water molecules in an asymmetric unit, has been refined at 1.9 A and the current crystallographic R value is 0.201. The B. subtilis chorismate mutase is a homotrimer, with beta-sheets from each monomer packing to form the core of a pseudo-alpha beta-barrel with helices on the outside of the trimer. In addition, the active sites have been located by using data from a complex with an endo-oxabicyclic inhibitor that mimics the transition state of the reaction. The structure of this complex has been refined to 2.2 A with a current R value of 0.182 for a model that includes 1388 residues, 12 inhibitor molecules, and 530 water molecules in the asymmetric unit. In each trimer, three equivalent active sites are located at the interfaces of two adjacent subunits.
Spin foam models as energetic causal sets
Creators: name: Cortês, Marina
name: Smolin, Lee
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Energetic causal sets are causal sets endowed by a flow of energy-momentum between causally related events. These incorporate a novel mechanism for the emergence of space-time from causal relations. Here we construct a spin foam model which is also an energetic causal set model. This model is closely related to the model introduced in parallel by Wolfgang Wieland in arXiv:1407.0025, and this construction makes use of results used there. What makes a spin foam model also an energetic causal set is Wieland's identification of new momenta, conserved at events (or four-simplices), whose norms are not mass, but the volume of tetrahedra. This realizes the torsion constraints, which are missing in previous spin foam models, and are needed to relate the connection dynamics to those of the metric, as in general relativity. This identification makes it possible to apply the new mechanism for the emergence of space-time to a spin foam model.
description: 16 pages, 4 figures. v2 typo corrected, references added
Differential antagonism of Ras biological activity by catalytic and Src homology domains of Ras GTPase activation protein.
Creators: name: Hisaka, M. M.
name: Quilliam, L. A.
name: Der, C. J.
name: Clark, G. J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: Ras p120 GTPase activation protein (GAP), a cytosolic protein, is a negative mediator and potential down-stream effector of Ras function. Since membrane association is critical for Ras function, we introduced the Ras membrane-targeting signal (a 19-residue peptide ending in CAAX, where C=cysteine, A=aliphatic amino acid, and X=any amino acid) onto the GAP N-terminal Src homology 2 and 3 and the C-terminal catalytic domains (designated nGAP/CAAX and cGAP/CAAX, respectively) to determine the role of membrane association in GAP function. cGAP/CAAX and full-length GAP/CAAX, but not GAP or nGAP/CAAX, exhibited potent growth inhihitory activity.Ras p120 GTPase activation protein (GAP), a cytosolic protein, is a negative mediator and potential down-stream effector of Ras function. Since membrane association is critical for Ras function, we introduced the Ras membrane-targeting signal (a 19-residue peptide ending in CAAX, where C=cysteine, A=aliphatic amino acid, and X=any amino acid) onto the GAP N-terminal Src homology 2 and 3 and the C-terminal catalytic domains (designated nGAP/CAAX and cGAP/CAAX, respectively) to determine the role of membrane association in GAP function. cGAP/CAAX and full-length GAP/CAAX, but not GAP or nGAP/CAAX, exhibited potent growth inhihitory activity.
Light-matter decoupling and $A^2$ term detection in superconducting circuits
Creators: name: García-Ripoll, Juan José
name: Peropadre, Borja
name: De Liberato, Simone
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the spontaneous emission of a qubit interacting with a one-dimensional waveguide through a realistic minimal-coupling interaction. We show that the diamagnetic term $A^2$ leads to an effective decoupling of a single qubit from the electromagnetic field. This effects is observable at any range of qubit-photon couplings. For this we study a setup consisting of a transmon that is suspended over a transmission line. We prove that the relative strength of the $A^2$ term is controlled with the qubit-line separation and show that, as a consequence, the spontaneous emission rate of the suspended transmon onto the line can increase with such separation, instead of decreasing.
description: 5 pages,4 figures
Discrete and integral fourier transforms: analytical examples.
Creators: name: Thompson, W. J.
name: Macdonald, J. R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: Analytical examples of the discrete Fourier transform (DFT) help in understanding relations between the DFT and the Fourier integral transform (FIT). Such examples enable one to estimate the errors involved when one transform is approximated by the other, and they suggest how such approximation errors might be reduced. The authors present mathematical and numerical analysis of the time-to-frequency DFT of the complex exponential function and of the frequency-to-time inverse DFT of the relaxation function. The FITs of these functions are exact inverses, and so they serve to clarify the effects of aliasing and truncation on the DFT. 10 refs., 5 figs., 1 tab.
title: Characterization of the particle size distribution, mineralogy, and Fe mode of occurrence of dust-emitting sediments from the Mojave Desert, California, USA
Creators: name: González-Romero, Adolfo
name: González-Flórez, Cristina
name: Panta, Agnesh
name: Yus-Díez, Jesús
name: Córdoba, Patricia
name: Alastuey, Andres
name: Moreno, Natalia
name: Hernández-Chiriboga, Melani
name: Kandler, Konrad
name: Klose, Martina
name: Clark, Roger N.
name: Ehlmann, Bethany L.
name: Greenberger, Rebecca N.
name: Keebler, Abigail M.
name: Brodrick, Phil
name: Green, Robert
name: Ginoux, Paul
name: Querol, Xavier
name: Pérez García-Pando, Carlos
Publisher: name: Copernicus Publications
Year: 2024

description: Constraining dust models to understand and quantify the effect of dust upon climate and ecosystems requires comprehensive analyses of the physiochemical properties of dust-emitting sediments in arid regions. Building upon previous studies in the Moroccan Sahara and Iceland, we analyse a diverse set of crusts and aeolian ripples (n=55) from various potential dust-emitting basins within the Mojave Desert, California, USA. Our focus is on characterizing the particle size distribution (PSD), mineralogy, aggregation/cohesion state, and Fe mode of occurrence. Our results show differences in fully and minimally dispersed PSDs, with crusts exhibiting average median diameters of 92 and 37 µm, respectively, compared to aeolian ripples with 226 and 213 µm, respectively. Mineralogical analyses unveiled strong variations between crusts and ripples, with crusts being enriched in phyllosilicates (24 % vs. 7.8 %), carbonates (6.6 % vs. 1.1 %), Na salts (7.3 % vs. 1.1 %), and zeolites (1.2 % and 0.12 %) and ripples being enriched in feldspars (48 % vs. 37 %), quartz (32 % vs. 16 %), and gypsum (4.7 % vs. 3.1 %). The size fractions from crust sediments display a homogeneous mineralogy, whereas those of aeolian ripples display more heterogeneity, mostly due to different particle aggregation. Bulk Fe content analyses indicate higher concentrations in crusts (3.0 ± 1.3 wt %) compared to ripples (1.9 ± 1.1 wt %), with similar proportions in their Fe mode of occurrence: nano-sized Fe oxides and readily exchangeable Fe represent ∼1.6 %, hematite and goethite ∼15 %, magnetite/maghemite ∼2.0 %, and structural Fe in silicates ∼80 % of the total Fe. We identified segregation patterns in the PSD and mineralogy differences in Na salt content within the Mojave basins, which can be explained by sediment transportation dynamics and precipitates due to groundwater table fluctuations described in previous studies in the region. Mojave Desert crusts show similarities with previously sampled crusts in the Moroccan Sahara in terms of the PSD and readily exchangeable Fe yet exhibit substantial differences in mineralogical composition, which should significantly influence the characteristic of the emitted dust particles.
Transport properties of the one-dimensional Hubbard model at finite temperature
Creators: name: Karrasch, C.
name: Kennes, D. M.
name: Moore, J. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study finite-temperature transport properties of the one-dimensional Hubbard model using the density matrix renormalization group. Our aim is two-fold: First, we compute both the charge and the spin current correlation function of the integrable model at half filling. The former decays rapidly, implying that the corresponding Drude weight is either zero or very small. Second, we calculate the optical charge conductivity sigma(omega) in presence of small integrability-breaking next-nearest neighbor interactions (the extended Hubbard model). The DC conductivity is finite and diverges as the temperature is decreased below the gap. Our results thus suggest that the half-filled, gapped Hubbard model is a normal charge conductor at finite temperatures. As a testbed for our numerics, we compute sigma(omega) for the integrable XXZ spin chain in its gapped phase.
Tend‐and‐befriend and rally around the flag effects during the COVID‐19 pandemic: Differential longitudinal change patterns in multiple aspects of social cohesion
Creators: name: Silveira, Sarita
name: Hecht, Martin
name: Voelkle, Manuel C.
name: Singer, Tania
Publisher: name: Humboldt-Universität zu Berlin
Year: 2023
Subjects: subject: lockdown
subject: neighbourhood cohesion
subject: sex differences
subject: social cohesion
subject: tend‐and‐befriend
subject: 150 Psychologie

description: The COVID‐19 pandemic and its lockdowns have uniquely challenged our social lives. The current study seeks to explore changes in social cohesion on various psychological dimensions (trust, belonging, social interaction, social engagement) and social system levels (family, friends, neighbours, institutions, nations), assessed in 3522 Berlin residents before, during, and after the first lockdown, and four times during the second lockdown. The first lockdown had a consistently negative impact on psychological dimensions of social cohesion. However, the picture was more nuanced regarding social systems: micro‐level cohesion with family members and neighbours, and macro‐level processes of institutional trust and national and international belonging increased, particularly in women. This suggests tend‐and‐befriend tendencies of affiliation, and affirmation of political and national identities. However, social cohesion collapsed during the second lockdown, indicating pandemic fatigue effects. Findings suggest a multidimensional approach to social cohesion and highlight the relevance of stressor duration in times of collective crisis.
Evidence for lack of DNA photoreactivating enzyme in humans.
Creators: name: Sancar, A.
name: Li, Y. F.
name: Kim, S. T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1993

description: Photoreactivating enzyme (DNA photolyase; deoxyribocyclobutadipyrimidine pyrimidine-lyase, EC 4.1.99.3) repairs UV damage to DNA by utilizing the energy of near-UV/visible light to split pyrimidine dimers into monomers. The enzyme is widespread in nature but is absent in certain species in a seemingly unpredictable manner. Its presence in humans has been a source of considerable controversy. To help resolve the issue we used a very specific and sensitive assay to compare photoreactivation activity in human, rattle-snake, yeast, and Escherichia coli cells. Photolyase was easily detectable in E. coli, yeast, and rattlesnake cell-free extracts but none was detected in cell-free extracts from HeLa cells or human white blood cells with an assay capable of detecting 10 molecules per cell.Photoreactivating enzyme (DNA photolyase; deoxyribocyclobutadipyrimidine pyrimidine-lyase, EC 4.1.99.3) repairs UV damage to DNA by utilizing the energy of near-UV/visible light to split pyrimidine dimers into monomers. The enzyme is widespread in nature but is absent in certain species in a seemingly unpredictable manner. Its presence in humans has been a source of considerable controversy. To help resolve the issue we used a very specific and sensitive assay to compare photoreactivation activity in human, rattle-snake, yeast, and Escherichia coli cells. Photolyase was easily detectable in E. coli, yeast, and rattlesnake cell-free extracts but none was detected in cell-free extracts from HeLa cells or human white blood cells with an assay capable of detecting 10 molecules per cell.
title:  Status and trends of energy development and climate action in Kenya
Creators: name: Mbungu, Grace Kageni
name: Odera, Sarah
name: Mwanzia, Patrick
name: Otieno, Victor
name: Koester, Phoebe
Publisher: name: Institute for Advanced Sustainability Studies (IASS)
Year: 2021

description: In collaboration with national knowledge partners in India, South Africa, Vietnam and Turkey, the project elaborates country specific co-benefits of climate policies, with emphasis on the opportunities presented by renewable power generation. With its political partners in government departments and agencies COBENEFITS connects the social and economic opportunities of renewable energies to climate change mitigation strategies. The COBENEFITS project contributes to building strong alliances and lowering political barriers to revisit and effectively implement Nationally Determined Contributions (NDC) to the 2015 Paris Agreement on Climate Change. COBENEFITS enables international mutual learning and capacity building among policy makers, knowledge partners and multipliers on seizing the social and economic co-benefits of climate change mitigation, through Country-specific assessment reports of social and economic co-benefits of renewable power generation Training materials, online courses and face-to-face trainings on seizing co-benefits of renewable power generation Policy dialogue sessions on enabling political environments and overcoming barriers to seize the co-benefits Strategies to connecting co-benefits of climate change mitigation with climate action plans, the Paris Ambition Mechanism and MRV schemes to support national NDC implementation.
description: IASS Brochure
description: COBENEFITS Impulse
title: The art of storytelling and the duty of the storyteller
title: Paula Rego and Martin McDonagh, a visual and literary dialogue
titleType: Subtitle
title: A arte do contador de histórias e o dever do contador de histórias
title: Paula Rego e Martin McDonagh, um diálogo visual e literário
titleType: Subtitle
Creators: name: Macedo, Ana Gabriela
Publisher: name: CICS.NOVA, Faculdade de Ciências Sociais e Humanas, Universidade NOVA de Lisboa / Húmus
Year: 2022

description: Martin McDonagh’s play The Pillowman (2003) has directly influenced Paula Rego’s compositions that bear the same name (2004-05). I propose to look at the work of both artists in the light of a shared conviction: the belief that “the first duty of a storyteller is to tell a story”. There lies the right of the storyteller. And the freedom of the artist is to reject becoming a “legislator of mankind” and to elude censorship through strategies that involve the ambivalence of the absurd, as well as transgression. Rego claims that the overpowering presence of the world of instincts, the grotesque and the abject in her work, are “naturally” there, as something moving and palpitating at the heart of the very reality she depicts.
description: Macedo, A. G. (2022). The art of storytelling and the duty of the storyteller: Paula Rego and Martin McDonagh, a visual and literary dialogue. Faces de Eva. Estudos sobre a Mulher, (48), 29-47. https://doi.org/10.34619/awgm-owob | ISSN: 0874-6888