cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The impact of a surgical risk calculator to prevent postoperative complications
Creators: name: Winkels, Erin
Publisher: name: No Publisher Supplied
Year: 2021

description: Purpose of the ProjectAll surgeries hold a certain amount of risk that surgeons and patients weigh against the benefit of the surgery. This includes postoperative complications, especially within the first 30 days of the procedure. A risk calculator provides an objective surgical risk score. The National Surgeon Quality Improvement Program (NSQIP) Surgical Risk Calculator (SRC) is a validated tool that predicts 30-day postoperative complications. The project’s goal was to evaluate the impact of the NSQIP SRC on postoperative complications when completed prior to surgery. Methodology This was a retrospective quality improvement project to evaluate the incidence of postoperative complications pre and postimplementation of the SRC. Complications included unplanned 30-day readmissions and Patient Safety Indicators (PSI’s). A total of 684 general surgical cases on those 18 years and older were included. Chi Square tests were used to evaluate any association between readmission pre and post-implementation. A Chi Square was also used to evaluate the association of the patients calculated risk and unplanned 30-day readmissions. Last, Chi Square tests was used to review any association between the NSQIP calculated risk compared to the surgeons' anticipated patient risk. Results Chi Square Tests evaluated any association between readmissions pre and post-implementation of the SRC. There was a decrease in readmissions from 8 pre-implementation to 3 post-implementation. Although there was a decrease in number of readmissions, there was no significant association between readmission and the use of the NSQIP SRC. While the highest percentage of patients who were readmitted within 30 days were patient's who scored higher than average risk for complications (36.4%), the Chi Square test did not find an association between the calculated risk score to unplanned 30-day readmissions. Feedback received from the surgeons also showed an association with the SRC calculated risk and their anticipated risk. Implications for Practice Many unforeseen barriers and obstacles occurred during this project due to Covid-19 and its impact on elective surgical cases and the project’s timeframe. It was concluded that the surgical risk scores were received well by most surgeons, and it would be beneficial to expand the use of it to other surgical specialties.
Stenus intralituus Puthz 2016, nov.sp.
Creators: name: Puthz, Volker
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Stenus
Stenus intralituus

description: Stenus intralituus nov.sp.
(Abb. 12, 22, 82, 115, 147, 172, 209, 331)
Material: Holotypus: BOLIVIEN: Cochabamba, Cochabamba, 105 km E Yungas, near Rio Carmen Mayu (Cochabamba- Villa Tunari road), 1750m, 17 o 08‘51‘‘S, 65 o 43’50‘‘W, FIT, 8.- 12.II.1999, R. Hanley. Paratypen: 1♂: wie HT, 1.-6.II.1999, ibidem, idem; 1♀: ibidem, 1.II.1999, cloud forest litter, R. Anderson; 1♂: Cochabamba, Cerrasco, Serrania de Siberia, Chua Khocha, 2360m, cloud forest, 26.VIII.- 6.IX.1990, FIT, Parillo & Ledezma; 1♂: ibidem, 2300m, cloud forest, under log, 1.IX.1991, M. Ledezma; 1♀: ibidem, cloud forest, bromeliad sp. 1., 3.IX.1990, P. Parillo; 1♂: ibidem, moss, 6.IX.1990, M. Ledezma; 2♂♂, 5 ♀♀: Santa Cruz, Mirana, 16 km NE Yungas de Mirana, 2300m, 18 o 3’35’’S, 63 o 54’38’’W, litter, 20.I.1999, R. Anderson. - HT und PTT im KSEM, PTT auch im FMCh und in cP.
Beschreibung: Makropter, schwarz, jede Elytre mit einemovalen, orangenem Fleck im hinteren Aussenviertel (Abb. 22), schwach glänzend; Vorderkörper grob bis sehr grob, sehr dicht, am Pronotum und auf den Elytren auch kurz-zusammenfliessend punktiert/skulptiert, Abdomen grob und dicht punktiert, lang, anliegend beborstet. Kiefertaster hellgelb. Fühlerbasis bräunlichgelb, Keule braun. Beine rötlichbraun. Clypeus schwarz, Obetrlippe schwarzbraun, dicht beborstet, Abdomen seitlich mässig breit gerandet, Tarsen ungelappt.
Länge: 3,8-4,3mm (Vorderkörperlänge: 2,0- 2,1mm).
PM des HT: HW: 35; DE: 19; PW: 29; PL: 28; EW: 41; EL: 37; SL: 29.
Männchen: Beine und Ventralmerkmale wie bei S. elephas nov.sp.. Metasternum (Abb. 147). Aedoeagus (Abb. 209), dem des S. elephas täuschend ähnlich, im Innern des Medianlobus ein krummstabähnlich geformtes Sklerit (Abb. 172), der Innensack mit kleinen Häkchen besetzt, ohne grössere Zähne.
Weibchen: 8. Sternit in der Mitte des Hinterrandes weniger dreieckig vorgezogen als bei S. elephas (Abb 331). Valvifer und 10. Tergit wie bei der verglichenen Art.
Differenzial diagnose: In fast allen Punkten äusserlich dem S. elephas äusserst ähnlich, die Skulptur des Vorderkörpers aber weniger gedrängt und weniger rugos (Abb. 82, 115), der Mittelteil der Stirn meist punktbreit geglättet, die Elytrenmakel oval.- Der unterschiedliche Innenbau des Medianlobus überzeugt mich davon, dass wir es hier mit einer eigenen Art zu tun haben.
Etymologie: Wegen des krummstab-ähnlichen Sklerits im Innern des Medianlobus nenne ich diese neue Art " intralituus " (Lat. = mit innerem Krummstab).
description: Published as part of Puthz, Volker, 2016, Übersicht über die neotropischen Arten der Gattung Stenus LATREILLE mit seitlich gerandetem Abdomen und ungelappten Tarsen (Coleoptera, Staphylinidae) 350. Beitrag zur Kenntnis der Steninen, pp. 1551-1634 in Linzer biologische Beiträge 48 (2) on pages 1579-1580, DOI: 10.5281/zenodo.5355748
Broadening the high sensitivity range of squeezing-assisted interferometers by means of two-channel detection
Creators: name: Shukla, Gaurav
name: Salykina, Dariya
name: Frascella, Gaetano
name: Mishra, Devendra Kumar
name: Chekhova, Maria V.
name: Khalili, Farid Ya.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: For a squeezing-enhanced SU(2) interferometer, we theoretically investigate the possibility to broaden the phase range of sub-shot-noise sensitivity. We show that this goal can be achieved by implementing detection in both output ports, with the optimal combination of the detectors outputs, leading to a phase sensitivity independent of the interferometer operation point. Provided that each detector is preceded by a phase-sensitive amplifier, this sensitivity could be also tolerant to the detection loss.
description: 11 pages, 2 figures
Incoherent single pion electroproduction on the deuteron with polarization effects
Creators: name: Tammam, M.
name: Fix, A.
name: Arenhövel, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Incoherent pion electroproduction on the deuteron is studied from threshold up to the second resonance region with special emphasis on the influence of final state interaction, in particular on polarization observables. The elementary $γN\toπN$ amplitude is taken from the MAID-2003 model. Final state interaction is included by considering complete rescattering in the final $NN$ and $πN$ subsystems. Their influence on the structure functions governing the semi-exclusive differential cross section, where besides the scattered electron only the produced pion is detected, is investigated in detail. For charged pion-production the effect of $NN$-rescattering is moderate whereas $πN$-rescattering is almost negligible, except very close to threshold. $NN$-rescattering appears much stronger in neutral pion production for which the primary mechanism is the elimination of a significant spurious coherent contribution in the impulse approximation. Sizeable effects are also found in some of the polarization structure functions for beam and/or target polarizations.
description: 20 pages including 14 figures
On Mixtures as Working Fluids for Air-cooled ORC Bottoming Power Plants of Gas Turbines
Creators: name: Dabo Krempus
name: Bahamonde, Sebastian
name: Van Der Stelt, Teus
name: De Servi, Carlo Maria
name: Klink, Wolfgang
name: Colonna, Piero
Publisher: name: Technical University of Munich
Year: 2021
Subjects: organic rankine cycle; air-cooled; mixtures

description: The use of mixtures as working fluids of organic Rankine cycle (ORC) waste heat recovery (WHR) power plants has been proposed in the past to improve the matching between the temperature profile of the hot and the cold streams of condensers and evaporators, and the possible increase in thermodynamic efficiency of the system. The goal of this study was to assess the benefits in terms of efficiency, environmental (GWP) and operational safety (flammability) that can be obtained by selecting binary mixtures as working fluids in air-cooled ORC bottoming power plants of medium-capacity industrial gas turbines. Furthermore, two thermodynamic cycle configurations were analyzed, namely the simple and the split-cycle configuration. The benchmark case is a combined cycle power plant formed by an industrial gas turbine and an air-cooled recuperated ORC power unit with cyclopentane as the working fluid. The results of this study indicate that binary mixtures provide the designer with a wider choice of optimal working fluids, however, in the case of the simple-cycle configuration, the improvement in terms of combined cycle efficiency over the benchmark case is rather limited. The so-called split-cycle configuration leads to a general performance enhancement especially in combination with working fluid blends. Furthermore, this cycle configuration enables the use of environmentally and operationally safe working fluids if compared to cyclopentane, with no penalty in terms of combined cycle efficiency.
Polarimetry, photometry, and spectroscopy of comet C/2009 P1(Garradd)
Creators: name: Ivanova, Oleksandra
name: Rosenbush, Vera
name: Afanasiev, Viktor
name: Kiselev, Nikolai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the results of photometry, linear spectropolarimetry, and imaging circular polarimetry ofcomet C/2009 P1 (Garradd) performed at the 6-m telescope BTA of the Special Astrophysical Observatory(Russia) equipped by the multi-mode focal reducer SCORPIO-2. The comet was observed at two epochspost-perihelion: on February 2-14, 2012 at r=1.6 au and α=36 °; and on April 14-21, 2012 at r=2.2 au and α=27 deg. The spatial maps of the relative intensity and circular polarization as well as the spectral distribution of linear polarization are presented. There were two features (dust and gas tails) orientedin the solar and antisolar directions on February 2 and 14 that allowed us to determine rotation periodof the nucleus as 11.1 hours. We detected emissions of C2 , C3 , CN, CH, NH2 molecules as well as CO+ and H2O+ ions, along with a high level of the dust continuum. On February 2, the degree of linear polarization in the continuum, within the wavelength range of 0.67-0.68 μm, was about 5% in the near-nucleus region up to near 6000 km and decreased to about 3% at near 40,000 km. The left-handed (negative) circular polarization at the level approximately from -0.06% to -0.4% was observed at the distances up to 3*10^4 km from the nucleus on February 14 and April 21, respectively.
description: 16, 13 figures, 2 tables
Steady and transient operations of small-scale ORC-based power unit for low-grade thermal sources
Creators: name: Fatigati, Fabio
name: Di Battista, Davide
name: Di Bartolomeo, Marco
name: Giammarco Di Giovine
name: Mariani, Luigi
name: Cipollone, Roberto
Publisher: name: Technical University of Munich
Year: 2021

description: Waste Heat Recovery (WHR) from exhaust gases of Internal Combustion Engines (ICE) is one of the most significant opportunities to reduce carbon dioxide emissions in the transportation sector. This is particularly useful because the category, at European defined a fine for any gram of CO2 which exceed the specified limits, redefining in this way the value of a low-carbon technology. In ICE applications, the main critical aspect is the intrinsic time-varying nature of the upper thermal source, which forces the ORC-based units to work frequently in off-design condition. This requires the recourse of reliable control systems and a careful choice of the design specifications of components. A key role is played by the expander which it must ensure to deal with highly variable flow rates and inlet thermodynamic conditions with the eventuality to receive two-phases flow when the high temperature thermal source is not enough to guarantee a full vaporization. Hence, to address all these issues, positive displacement machines are generally preferred to the dynamic types (radial or axial turbines). Scroll expanders among the other types appear to be the most suitable candidates, thanks their reliability, compactness, high efficiency and ease of starting. In this paper a scroll expander has been tested inside a test rig which allows to evaluate the performance of a 1.5 kW mechanical ORC-based power unit fed by the exhaust gases of a 3L turbocharged diesel internal combustion engine represented by an Iveco F1C. As working fluid, R245fa was selected. The results are presented for different steady working condition observing a maximum plant efficiency and power respectively equal to 4% and 500 W. Also transient analysis were performed observing that the ORC unit presents a relatively low start up time (370 s) thanks to the capability of scroll machine to work with two phase working fluid.
Scalarized charged black holes in the Einstein-Maxwell-Scalar theory with two U(1) fields
Creators: name: Myung, Yun Soo
name: Zou, De-Cheng
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate scalarized charged black holes in the Einstein-Maxwell-Scalar theory with two U(1) fields inspired by the $N=4$ supergravity. From the onset of the spontaneous scalarization (tachyonic instability of Reissner-Nordström black hole), these black holes are classified by the number of $n=0,1,2,\cdots$, where $n=0$ is called the fundamental black hole and $n=1,2,\cdots$ denote the $n$-excited black holes. Adopting radial perturbations, we show that the $n=0$ black hole is stable against the $s(l=0)$-mode scalar perturbation, whereas the $n=1,2$ excited black holes are unstable. This implies that the $n=0$ black hole is considered as an endpoint of the Reissner-Nordström black hole.
description: 20 pages, 10 figures
Extension of Lie’s algorithm; a potential symmetries classification of PDEs
Creators: name: Doran-Wu, Patrick Robert
Publisher: name: University of British Columbia
Year: 2009

description: Symmetries of a system of differential equations are transformations which leave invariant the family of solutions of the system. Infinitesimal Lie symmetries of locally solvable analytic differential equations can be found by using Lie's algorithm. We extend Lie's algorithm to one which can calculate infinitesimal Lie symmetries of analytic systems of differential equations which are not locally solvable. Local infinitesimal symmetries of differential equations are flows of vector fields which depend on local properties of solutions and have been extensively calculated and applied. In contrast infinitesimal nonlocal symmetries, which are flows of vector fields depending on nonlocal properties of solutions, have only recently been introduced. Using our extension of Lie's symmetry algorithm, we study the infinitesimal nonlocal symmetries of potential type introduced by Bluman, Kumei and Reid. We give verifiable criteria for useful potential systems and give a complete potential symmetries analysis for a class of nonlinear diffusion equations. We also find large classes of higher order scalar and systems of partial differential equations admitting potential symmetries.
Environmental analysis of a small scale marine ORC
Creators: name: Roumpedakis, Tryfon
name: Kallis, George
name: Koutantzi, Zoi
name: Pallis, Platon
name: Charalampidis, Antonios
name: Karellas, Sotirios
Publisher: name: Technical University of Munich
Year: 2021

description: The Marine ORC prototype unit is based on a conventional low-temperature subcritical Organic Rankine Cycle and has been designed as a waste heat recovery system for the jacket water of marine diesel auxiliary internal combustion engines (ICEs). The system has a nominal power output of 5 kWe and its working fluid is R134a. In the present work, the key remarks of the life cycle analysis on the experimental test rig, installed in Athens, are presented. The inventory has been assembled using manufacturer’s data combined with assumptions from literature and the analysis of the impacts has been conducted using the ReCiPe 2016 method. Τhe system was evaluated in coupling with the auxiliary ICE and was compared against an ICE that could produce on annual basis equal MWh to the coupled ICE-marine ORC system. In fact, the ICE-marine ORC system enhanced the environmental performance up to 3% on many impact categories, apart from the mineral resources and the marine and terrestrial ecotoxicity which is related to the extended use of copper-based materials. Moreover, the study was expanded by analyzing the contribution of the ORC components in the total impact assessment. In fact, the working fluid has a major impact on the ozone depletion and the global warming categories with a share of 91% and 78%, respectively. In terms of mineral resources scarcity and ecotoxicity, the motors/generators and the heat exchangers of the ORC have the largest contribution, owing to their large metal masses.
MPEC 2024-A21 : 2024 AG
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 AG

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Advanced Organic Rankine Cycles for thermally integrated Carnot batteries
Creators: name: Weitzer, Maximilian
name: Müller, Dominik
name: Karl, Jürgen
Publisher: name: Technical University of Munich
Year: 2021
Subjects: Carnot battery; PTES; Organic Rankine Cycle; Heat pump; Organic Flash Cycle; Energy storage

description: Carnot batteries are an emerging technology for base-load capable, electrical energy storage. During charging, the concept converts surplus electrical energy into thermal energy by means of a heat pump. During the discharge phase, a power cycle transforms the stored thermal energy back to electrical energy. Carnot batteries based on organic Rankine cycles rely on technically mature components and allow an effective integration of low-temperature heat sources to reach considerable efficiencies. However, thermally integrated Carnot batteries are stuck in a tradeoff between power-to-power efficiency, storage size and heat source utilization. This study suggests two approaches to minimize this trilemma. The first option targets at novel cycle layouts comprising flash cycles. Simulation results indicate that organic flash cycles with a two-phase expander increase the efficiency of Carnot batteries, particularly for high storage temperature spreads which enables more compact storages. The second option suggests Carnot batteries as highly integrated link between renewable power and district heating grids. That allows Carnot batteries to become a flexible sector coupling technology which can store and provide power and heat on demand.
Spectral characterization of magic angles in twisted bilayer graphene
Creators: name: Becker, Simon
name: Embree, Mark
name: Wittsten, Jens
name: Zworski, Maciej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Twisted bilayer graphene (TBG) has been experimentally observed to exhibit almost flat bands when the twisting occurs at certain magic angles. In this letter, we report new results on the continuum model of twisted bilayer graphene and its electronic band structure. Under we show that in the approximation of vanishing AA-coupling, the magic angles (at which there exist entirely flat bands) are given as the eigenvalues of a non-hermitian operator, and that all bands start squeezing exponentially fast as the angle $θ$ tends to $0$. In particular, as the interaction potential changes, the dynamics of magic angles involves the non-physical complex eigenvalues. Using our new spectral characterization, we show that the equidistant scaling of inverse magic angles, is special for the choice of tunnelling potentials in the continuum model, and is not protected by symmetries. While we also show that the protection of zero-energy states holds in the continuum model as long as particle-hole symmetry is preserved, we observe that the existence of flat bands and the exponential squeezing are special properties of the chiral model.
STAKEHOLDER INPUT TO RESEARCH AGENDA
Creators: name: Malone, Paul
name: Clarke, James
name: Hasija, Sidhant
name: Elahi, Ehsan
name: Pittonet Gaiarin, Sara
name: Parker, Stephanie
Publisher: name: Zenodo
Year: 2019
Subjects: NGI Consultation
NGI Knowledge curation
Next Generation Internet Research

description: The SpeakNGI.eu Knowledge Base represents the primary output from the Consultation Platform of the SpeakNGI.eu project. This document present two ways of consuming that knowledge, an advanced search facility and a Summary Report.

 SpeakNGI.eu developed a model to represent the required outputs from the NGI consultation activities. The model has the following elements:
 • Human Values
 • Challenges
 • Solutions
 • Initiatives Human values raise challenges which can be addressed by research initiatives, and also solved by solutions that can in turn be executed through initiatives. These solutions thereby underpin the values. Knowledge collected through the Consultation Platform and focused insights, event reports and survey results are curated by the SpeakNGI.eu team and inserted in the Knowledge Base. Initiatives are considered to be projects addressing the challenges as well as European Union calls for proposals
 addressing the recognised challenges. The advanced search mechanism allows users to search for knowledge using these elements as filters. A summary search result for each of the identified human values is presented in this document.
Introduction of important lifestyle modifications to prediabetes patients at an urban family primary care setting
Creators: name: Apostol, Aljenica Marie
Publisher: name: No Publisher Supplied
Year: 2021

description: Purpose of Project: The purpose of this DNP quasi-experimental project is to introduce important lifestyle modifications to prediabetes patients at an urban family primary care setting. With the introduction of a food and exercise log, weight monitoring pre and post-study and 2 remote 15-minute group counseling sessions in a 4-week study period, the end goals include weight loss, increase in physical activity and improved food choices in prediabetic patients. Methodology:The Rutgers University Library, Pubmed and reputable organizations such as the CDC and the American Diabetes Association (ADA) websites were utilized and searched using key terms. In light of the Covid-19 pandemic, the methodology of this project was adjusted to adhere to Rutgers University’s social distancing guidelines. To avoid direct study participant contact, the co-principal investigator (PI) facilitated subject recruitment, requesting for consent and group counseling Zoom follow ups remotely at the project site for HIPAA compliance. Results:A total of seven subjects consented to the study. However, three were lost to mid-study leaving a total of four. The mean serum Hgb A1C value was 6.01 with the minimum being 5.60 and the maximum 6.40 (SD = .36). Pre-intervention weights of the subjects varied significantly from 185 to 275 lbs. with the mean being 213.25 (SD = 41.76). Post-intervention weights were similar ranging from 180 to 281 lbs. with a mean weight of 212.75 (SD = 46.05). Total weight loss among the four subjects was two lbs. and a mean of .50 lbs. (SD = 6.46). Two subjects lost weight. One lost seven lbs. (A01) and the other lost five (C03). The other two subjects on the other hand, gained weight with one gaining six (B02) and the other four lbs. (E05). The subject who lost the most weight (A01) had the highest mean exercise duration of 52.5 minutes and the participant who gained the most (B02) also had the lowest mean exercise duration of 30 minutes. Overall, the mean duration of physical activity was 43.13 minutes (SD = 9.44) ranging from 30.0 to 52.5 minutes. A Spearman's rank-order correlation was run to assess the relationship between Hgb A1c levels, subjects’ pre- and post-intervention weights, total weight loss, and time spent exercising. There were no statistically significant correlations found between these variables, p > .05. Subjects, on average, weighed more pre-intervention (M = 213.25 lbs., SD = 41.76) than post-intervention (M = 212.75 lbs., 46.05). However, the difference between the two groups was not statistically significant, 95% CI [-10.771, 9.771], t(3) = -.155, p = .887. Implications for Practice:Referral for Hgb A1c testing, continuing evaluation and education can help mitigate the progression of prediabetes to diabetes. Introducing lifestyle modifications that include weight reduction, physical activity and incorporating a healthy, well-balanced diet can prevent prediabetes and/or delay diabetes progression.
Pressure induced quenching of planar rattling in Cu$_{10}$Zn$_{2}$Sb$_{4}$S$_{13}$ studied by specific-heat and x-ray diffraction measurements
Creators: name: Umeo, Kazunori
name: Suekuni, Koichiro
name: Takabatake, Toshiro
name: Nishibori, Eiji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have studied the pressure effect on the rattling of tetrahedrite Cu$_{10}$Zn$_{2}$Sb$_{4}$S$_{13\,}$(CZSS) and type-I clathrate Ba$_{8}$Ga$_{16}$Sn$_{30\,}$(BGS) by specific heat and x-ray diffraction measurements. By applying pressure $P$, the rattling energy for CZSS initially decreases and steeply increases for $P$ $\textgreater$ $1$ GPa. By contrast, the energy for BGS increases monotonically with $P$ up to 6.5 GPa. An analysis of the pressure dependent specific heat and x-ray diffraction indicates that the out-of-plane rattling of the Cu atoms in the S$_{3}$ triangle of CZSS originates from the chemical pressure, unlike the rattling of the Ba ions among off-center sites in an oversized cage of BGS. The rattling in CZSS ceases upon further increasing $P$ above 2 GPa, suggesting that Cu atoms escape away from the S$_{3}$ triangle plane.
description: 16 pages, 3 figures, 1 table
The GALEX Ultraviolet Atlas of Nearby Galaxies
Creators: name: de Paz, A. Gil
name: Boissier, S.
name: Madore, B. F.
name: Seibert, M.
name: Joe, Y. H.
name: Boselli, A.
name: Wyder, T. K.
name: Thilker, D.
name: Bianchi, L.
name: Rey, S. -C.
name: Rich, R. M.
name: Barlow, T. A.
name: Conrow, T.
name: Forster, K.
name: Friedman, P. G.
name: Martin, D. C.
name: Morrissey, P.
name: Neff, S. G.
name: Schiminovich, D.
name: Small, T.
name: Donas, J.
name: Heckman, T. M.
name: Lee, Y. -W.
name: Milliard, B.
name: Szalay, A. S.
name: Yi, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present images, integrated photometry, surface-brightness and color profiles for a total of 1034 nearby galaxies recently observed by the GALEX satellite in its far-ultraviolet (FUV; 1516A) and near-ultraviolet (NUV; 2267A) bands. (...) This data set has been complemented with archival optical, near-infrared, and far-infrared fluxes and colors. We find that the integrated (FUV-K) color provides robust discrimination between elliptical and spiral/irregular galaxies and also among spiral galaxies of different sub-types. Elliptical galaxies with brighter K-band luminosities (i.e. more massive) are redder in (NUV-K) color but bluer in (FUV-NUV) than less massive ellipticals. In the case of the spiral/irregular galaxies our analysis shows the presence of a relatively tight correlation between the (FUV-NUV) color and the total infrared-to-UV ratio. The correlation found between (FUV-NUV) color and K-band luminosity (with lower luminosity objects being bluer than more luminous ones) can be explained as due to an increase in the dust content with galaxy luminosity. The images in this Atlas along with the profiles and integrated properties are publicly available through a dedicated web page at http://nedwww.ipac.caltech.edu/level5/GALEX_Atlas/
description: 181 pages, 10 figures, accepted for publication in ApJS (abstract abridged)
Off-shell Higgs Couplings in $H^*\to ZZ\to \ell\ellνν$
Creators: name: Gonçalves, Dorival
name: Han, Tao
name: Leung, Sze Ching Iris
name: Qin, Han
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the new physics reach for the off-shell Higgs boson measurement in the ${pp \to H^* \rightarrow Z(\ell^{+}\ell^{-})Z(ν\barν)}$ channel at the high-luminosity LHC. The new physics sensitivity is parametrized in terms of the Higgs boson width, effective field theory framework, and a non-local Higgs-top coupling form factor. Adopting Machine-learning techniques, we demonstrate that the combination of a large signal rate and a precise phenomenological probe for the process energy scale, due to the transverse $ZZ$ mass, leads to significant sensitivities beyond the existing results in the literature for the new physics scenarios considered.
description: 8 pages, 9 figures, 1 table
Aluminum Cayley trees as scalable, broadband, multi-resonant optical antennas
Creators: name: Simon, Thomas
name: Li, Xiaoyan
name: Martin, Jérôme
name: Khlopin, Dmitry
name: Stéphan, Odile
name: Kociak, Mathieu
name: Gérard, Davy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An optical antenna can convert a propagative optical radiation into a localized excitation, and reciprocally. Although optical antennas can be readily created using resonant nanoparticles (metallic or dielectric) as elementary building blocks, the realization of antennas sustaining multiple resonances over a broad range of frequencies remains a challenging task. Here, we use aluminum self-similar, fractal-like structures as broadband optical antennas. Using electron energy loss spectroscopy, we experimentally evidence that a single aluminum Cayley tree, a simple self-similar structure, sustains multiple plasmonic resonances. The spectral position of these resonances is scalable over a broad spectral range spanning two decades, from ultraviolet to mid-infrared. Such multi-resonant structures are highly desirable for applications ranging from non-linear optics to light harvesting and photodetection, as well as surface-enhanced infrared absorption spectroscopy.
description: Authors' version of the published paper. Supplementary information can be found at https://www.pnas.org/doi/suppl/10.1073/pnas.2116833119
Emotional Intelligence: Why its Matters in Change Leadership and Innovation in the 21st Century Styles of Work
Creators: name: Ikart, Emmanuel Matthew
Publisher: name: International Journal of Business Innovation
Year: 2023

description: Emotional intelligence (EQ) is recognized as a key leadership skill critical in achieving organizational goals and succeeding in a volatile and ambiguous global business environment. EQ accounts for 90% of what sets effective leaders apart from their peers with technical skills. The most effective leaders are alike in one crucial way: they all have a high degree of EQ. Hence, EQ is the sine qua non for superior leadership performance. Yet, emotions have consistently been overlooked by previous studies of leadership because the workplace was considered as a rational environment where emotions were understood as impediments to the science of sound judgement. Research studies on how EQ relates with leadership behaviour for leadership high performance are highly limited and mixed. Only a limited number of studies employed evidence-based research approach to establish the significance of their relationships. While emotions are not beyond the science of sound judgement in modern business contexts, we need adequate evidence-based research studies on how EQ relates with leadership high performance. This study uses the theory of EQ proposed by Goleman for leadership high performance. Responses were collected from 69 respondents in leadership roles from public and private sector organizations in the Australian business context and the measures and research hypotheses were analysed using linear regression. The results show that emotional self-awareness, self-motivation, empathy, and the averaged full EQ have a strong influence on leadership behaviour. These findings provide a better understanding of leadership behaviour factors of EQ contributing to superior leadership performance. Also, the results have implications for leadership search firms and human resource practitioners.
description: International Journal of Business Innovation, Volume 2 Issue 4 (2023)
Instabilities of rotating compact stars: a brief overview
Creators: name: Villain, L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Direct observations of gravitational waves will open in the near future new windows on the Universe. Among the expected sources, instabilities of rotating compact astrophysical objects are waited to be detected with some impatience as this will sign the birth of ``gravitational waves asteroseismology'', a crucial way to improve our knowledge of matter equation of state in conditions that cannot be reproduced in a lab. However, the theoretical work needed to really get informations from to-be-detected signals is still quite large, numerical simulations having become a necessary key ingredient. This article tries to provide a short overview of the main physical topics involved in this field (general relativity, gravitational waves, instabilities of rotating fluids, {\it etc.}), concluding with a brief description of the work that was done in Paris-Meudon Observatory by Silvano Bonazzola and collaborators.
description: 19 pages, Proceeding of Cargese School "Astrophysical fluid dynamics" (May 2005) organized by B. Dubrulle and M. Rieutord in honour of J.-P. Zahn and S. Bonazzola. Slightly upgraded version: references added, summary on compact stars birth clarified
Fault Ride Trough requirements by grid codes: transient analysis and solutions for 1-10 MW range ORCs
Creators: name: Moraschinelli, Francesco
name: Bini, Roberto
name: L. Frosio
name: D. Migliari
Publisher: name: Technical University of Munich
Year: 2021

description: Up to recently, it was rather usual that any grid disturbance outside certain limits (like a short grid fault causing a deep voltage sag) implied a small size (hundreds of kW or megawatts range) electricity production unit, as an ORC is, to be disconnected from the grid and stop. The increasing share of renewable plants, compared to the overall generated power in a grid, forced the utilities to take into account the problem that a sudden shut-off of many generators could even cause a major grid black-out, possibility that would be negligible if the contribution to the overall power of the disconnected generator/s was minor. For this reason, more recently many International grid codes ask the generators connected to the grid to remain connected when a voltage sag, within a specified voltage-time profile, occurs. The paper lists and analyzes the grid codes requirements of some European countries and shows the results of a detailed study carried out on a 770 kW ORC unit, considering the transient behaviour of the system during a grid fault from an electrical point of view and taking into account the dynamic response of the ORC unit as a whole. The analysis is carried out considering to drive either an asynchronous generator or a synchronous one. Furthermore, some considerations are added to explain which solutions should be adopted in the design and selection of the electric generator driven by the turbine as well as of the main auxiliaries of the ORC (for example the frequency converter powering the feed pump) and other ancillary systems to avoid a shutdown of the unit during a short-circuit grid fault.
Masur-Veech volumes, frequencies of simple closed geodesics and intersection numbers of moduli spaces of curves
Creators: name: Delecroix, Vincent
name: Goujard, Elise
name: Zograf, Peter
name: Zorich, Anton
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We express the Masur-Veech volume and the area Siegel-Veech constant of the moduli space $\mathcal{Q}_{g,n}$ of genus $g$ meromorphic quadratic differentials with $n$ simple poles as polynomials in the intersection numbers of $ψ$-classes with explicit rational coefficients. The formulae obtained in this article result from lattice point counts involving the Kontsevich volume polynomials that also appear in Mirzakhani's recursion for the Weil-Petersson volumes of the moduli spaces of bordered hyperbolic surfaces with geodesic boundaries. A similar formula for the Masur-Veech volume (though without explicit evaluation) was obtained earlier by Mirzakhani via completely different approach. Furthermore, we prove that the density of the mapping class group orbit of any simple closed multicurve $γ$ inside the ambient set of integral measured laminations computed by Mirzakhani coincides with the density of square-tiled surfaces having horizontal cylinder decomposition associated to $γ$ among all square-tiled surfaces in $\mathcal{Q}_{g,n}$. We study the resulting densities (or, equivalently, volume contributions) in more detail in the special case $n=0$. In particular, we compute the asymptotic frequencies of separating and non-separating simple closed geodesics on a closed hyperbolic surface of genus $g$ for small $g$ and we show that for large genera the separating closed geodesics are $\sqrt{\frac{2}{3πg}}\cdot\frac{1}{4^g}$ times less frequent.
description: The current paper (as well as the companion paper arXiv:2007.04740) has grown from arxiv:1908.08611. The conjectures stated in arXiv:1908.08611 are proved by A. Aggarwal in arXiv:2004.05042
Intensive thermodynamic parameters in nonequilibrium systems
Creators: name: Bertin, Eric
name: Martens, Kirsten
name: Dauchot, Olivier
name: Droz, Michel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Considering a broad class of steady-state nonequilibrium systems for which some additive quantities are conserved by the dynamics, we introduce from a statistical approach intensive thermodynamic parameters (ITPs) conjugated to the conserved quantities. This definition does not require any detailed balance relation to be fulfilled. Rather, the system has to satisfy a general additivity property, which holds in most of the models usually considered in the literature, including those described by a matrix product ansatz with finite matrices. The main property of these ITPs is to take equal values in two subsystems, making them a powerful tool to describe nonequilibrium phase coexistence, as illustrated on different models. We finally discuss the issue of the equalization of ITPs when two different systems are put into contact. This issue is closely related to the possibility of measuring the ITPs using a small auxiliary system, in the same way as temperature is measured with a thermometer, and points at one of the major difficulties of nonequilibrium statistical mechanics. In addition, an efficient alternative determination, based on the measure of fluctuations, is also proposed and illustrated.
description: 17 pages, 5 figures; final version, with minor changes
The rich-club phenomenon across complex network hierarchies
Creators: name: McAuley, Julian J.
name: Costa, Luciano da Fontoura
name: Caetano, Tiberio S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The so-called rich-club phenomenon in a complex network is characterized when nodes of higher degree (hubs) are better connected among themselves than are nodes with smaller degree. The presence of the rich-club phenomenon may be an indicator of several interesting high-level network properties, such as tolerance to hub failures. Here we investigate the existence of the rich-club phenomenon across the hierarchical degrees of a number of real-world networks. Our simulations reveal that the phenomenon may appear in some hierarchies but not in others and, moreover, that it may appear and disappear as we move across hierarchies. This reveals the interesting possibility of non-monotonic behavior of the phenomenon; the possible implications of our findings are discussed.
description: 4 pages
Experimental investigation of the partially evaporated organic Rankine cycle for various heat source conditions
Creators: name: Dawo., Fabian
name: Buhr, Jonathan
name: Wieland, Christoph
name: Spliethoff, Hartmut
Publisher: name: Technical University of Munich
Year: 2021

description: The Organic Rankine Cycle (ORC) could potentially play a vital role in the mitigation of climate change due to its ability to enable low-temperature heat sources for power generation. Next to the ORC, the partial evaporated Organic Rankine Cycle (PEORC) has recently received increased attention in the literature. In contrast to the ORC, the working fluid is not fully evaporated in the PEORC, which allows a higher utilization of the heat source due to a better match of the temperature profiles of heat source and working fluid during heat transfer. In this paper, both concepts are experimentally compared by their ability to generate net power outputs from a variety of different heat source conditions. Therefore, the heat source temperature is varied between 110 °C and 140 °C and the heat source mass flow is varied between 250 g/s and 400 g/s at a test rig. For all investigated heat source conditions, the optimal operating parameters, which provide the highest net system efficiencies, were identified. The results show that the PEORC outperforms the ORC for all investigated heat source conditions in terms of net system efficiency, especially at low heat source temperatures. While the thermal efficiency is higher in case of the ORC concept, the considerably higher heat transfer efficiency of the PEORC overcompensates the lower thermal efficiency.
Is European Fund’s implementation subject to slipup for emerging countries’ approach?
Creators: name: Nistor, Cristina Silvia
name: Filip, Crina Ioana
Publisher: name: International Journal of Business Innovation
Year: 2023

description: Our study explores in a holistic approach the topic of non-refundable European funds (NREF). Taking as pillars the results of the operational audit (weakness and errors) and the remedial role of follow-up operations, we approach in a longitudinal manner (2008-2020) the evolution of the European funds in the case of Romania, a former communist country, member of the EU. Through a theoretical and empirical framework, our results show a fluctuating evolution on all the operational programmes implemented in Romania over 22 years. The results can be a reference base for Est European countries’ experience, newly acquainted with EF. The unveiled results can be justified by the Romania’s government lack of experience, fluctuating legislation, minor knowledge of the Eastern European culture by EU, aspects that, in recent years, based on a better familiarity with the non-reimbursable funds and the effects of follow-up operations, are significantly improving.
description: International Journal of Business Innovation, Volume 2 Issue 4 (2023)
Real flag manifolds and a construction of spaces over a polyhedron: Mathematical Investigations arising from the Jahn-Teller effect
Creators: name: Svensson, Anders Gunnar Stefan
Publisher: name: University of British Columbia
Year: 2009

description: We examine a construction of topological spaces over an arbitrary polyhedron and show that it subsumes the lattice construction of R. R. Douglas and A. R. Rutherford. A Simplicial Approximation Theorem is proven for the general construction, for maps from a polyhedron to one of our spaces lying over another polyhedron. A special case of our construction (a slight generalization of the lattice construction) is examined and a class of locally trivial bundles is constructed. These are used to examine neighbourhood structure in the special case. We also enumerate exactly which spheres can be constructed by a lattice construction on a product of real orthogonal, complex unitary or quaternionic symplectic groups. The fundamental group of the real complete flag manifolds is determined following a detailed exposition of Clifford algebras. Appendices are provided on the diagonalization of quaternionic Hermitean matrices and on a generalized mapping cylinder that can be regarded as an endofunctor on the category of locally trivial bundles over a fixed locally compact base.
Beyond Localized Graph Neural Networks: An Attributed Motif Regularization Framework
Creators: name: Sankar, Aravind
name: Wang, Junting
name: Krishnan, Adit
name: Sundaram, Hari
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We present InfoMotif, a new semi-supervised, motif-regularized, learning framework over graphs. We overcome two key limitations of message passing in popular graph neural networks (GNNs): localization (a k-layer GNN cannot utilize features outside the k-hop neighborhood of the labeled training nodes) and over-smoothed (structurally indistinguishable) representations. We propose the concept of attributed structural roles of nodes based on their occurrence in different network motifs, independent of network proximity. Two nodes share attributed structural roles if they participate in topologically similar motif instances over co-varying sets of attributes. Further, InfoMotif achieves architecture independence by regularizing the node representations of arbitrary GNNs via mutual information maximization. Our training curriculum dynamically prioritizes multiple motifs in the learning process without relying on distributional assumptions in the underlying graph or the learning task. We integrate three state-of-the-art GNNs in our framework, to show significant gains (3-10% accuracy) across six diverse, real-world datasets. We see stronger gains for nodes with sparse training labels and diverse attributes in local neighborhood structures.
description: To appear at ICDM 2020 (IEEE International Conference on Data Mining)