cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
UMEC Non-Iterative Math
Creators: name: Young, Christopher
Publisher: name: Zenodo
Year: 2025
Subjects: Non-Iterative Computation
Entropy-Weighted Methods
Mathematical Entropy
Self-Resolving Mathematics
Computational Efficiency
Nonlinear Stability
Global Optimization
Entropy Modulation
Harmonic Digit Extraction
High-Precision Numerical Methods
Computational Fluid Dynamics
Quantum Computation
High-Performance Computing
Chaotic System Stabilization
Cryptographic Randomness
Mathematical AI
Non-Iterative Neural Networks
Neural Networks
Loss Function Optimization
AI
Math
Computation

description: This paper introduces the Universal Mathematical Entropy Computation (UMEC) framework, a non-iterative, resonance-driven method for solving complex numerical problems across physics, computation, and mathematics. Unlike traditional methods that rely on iterative approximation, gradient descent, or probabilistic collapse, UMEC employs a fixed entropy-weighted transformation that selects physically and mathematically valid states via harmonic balance.

This math system underpins multiple other works, including:

The Nature of Constants – deriving 20+ fundamental physical constants from first principles with no empirical input.

Introduction to Q-Epsilon – redefining quantum mechanics as structured energy flow within a resonant vacuum.

Gravitational Field Measurements – offering mass-free gravitational field equations based on energy density.

The Natural Emergence of Physics – demonstrating how Pan reveals the structure behind the constants and equations we’ve taken for granted.

I invite readers not only to explore this document, but to read the broader collection of attached works, which build upon one another to form a complete reimagining of physical law and mathematical structure. 

If any part of this framework resonates with your work or inspires new ideas, I welcome correspondence and collaboration.
Molecular Characterization of Basal-Like and Non-Basal-Like Triple-Negative Breast Cancer
Creators: name: Cheang, M. C. U.
name: Anders, C. K.
name: Prat, A.
name: Adamo, B.
name: Carey, L. A.
name: Perou, C. M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Triple-negative (TN) and basal-like (BL) breast cancer definitions have been used interchangeably to identify breast cancers that lack expression of the hormone receptors and overexpression and/or amplification of HER2. However, both classifications show substantial discordance rates when compared to each other. Here, we molecularly characterize TN tumors and BL tumors, comparing and contrasting the results in terms of common patterns and distinct patterns for each. In total, when testing 412 TN and 473 BL tumors, 21.4% and 31.5% were identified as non-BL and non-TN, respectively. TN tumors identified as luminal or HER2-enriched (HER2E) showed undistinguishable overall gene expression profiles when compared versus luminal or HER2E tumors that were not TN. Similar findings were observed within BL tumors regardless of their TN status, which suggests that molecular subtype is preserved regardless of individual marker results. Interestingly, most TN tumors identified as HER2E showed low HER2 expression and lacked HER2 amplification, despite the similar overall gene expression profiles to HER2E tumors that were clinically HER2-positive. Lastly, additional genomic classifications were examined within TN and BL cancers, most of which were highly concordant with tumor intrinsic subtype. These results suggest that future clinical trials focused on TN disease should consider stratifying patients based upon BL versus non-BL gene expression profiles, which appears to be the main biological difference seen in patients with TN breast cancer.
Intertwining Operator Realization of anti de Sitter Holography
Creators: name: Aizawa, N.
name: Dobrev, V. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give a group-theoretic interpretation of relativistic holography as equivalence between representations of the anti de Sitter algebra describing bulk fields and boundary fields. Our main result is the explicit construction of the boundary-to-bulk operators for arbitrary integer spin the framework of representation theory. Further we show that these operators and the bulk-to-boundary operators are intertwining operators. In analogy to the de Sitter case, we show that each bulk field has two boundary (shadow) fields with conjugated conformal weights. These fields are related by another intertwining operator given by a two-point function on the boundary.
description: 21 pages, Latex; V2,V3: improvements related to the publication process
title: Herausforderungen für Lehrer*innen und Schüler*innen während der Corona-Pandemie in der Sekundarstufe II
Creators: name: Kašca, Manca
Year: 2022

description: Die Masterarbeit wurde mit Hilfe der kritischen Aufarbeitung wissenschaftlicher Literatur und von Medienberichten verfasst und setzt sich hinsichtlich des Aufbaus aus zehn Kapiteln (inkl. Fazit) zusammen. Nach der Einleitung mit einem Aufriss der Thematik und der Darlegung des Ziels dieser Arbeit folgt die Klärung zentraler Begriffe für das Verständnis der theoretischen Grundlagen dieser Untersuchung - dazu werden die Termini "E-Learning" und "Fernunterricht" definiert. Im darauffolgenden Kapitel werden kurz die Bildungssysteme in Österreich und Slowenien dargestellt. Daraufhin werden die Richtlinien und Anweisungen erörtert, die am Beginn der Corona-Pandemie ausgegeben wurden, und es wird beschrieben, wie mit diesen in den Schulen in beiden Ländern umgegangen wurde. Es werden auch verschiedene Nachteile und Vorteile des Fernunterrichts diskutiert und vorgestellt. Im fünften Kapitel wird der Ökosystemische Ansatz (auch "Ecological System Theory" genannt) wiedergegeben, worauf der Versuch folgt, diese Theorie im Zusammenhang mit dem Phänomen der Corona-Pandemie und den Kategorien für die deduktive Kategorienbildung, die im nächsten Kapitel vorgestellt werden, zu verknüpfen und einzuordnen. Das darauffolgende Kapitel wendet sich der Beschreibung des analytischen Rahmens der Untersuchung zu, der vier Kategorien in den Mittelpunkt stellt: Selbstlernkompetenz, Schulische Sozialisation, Sozioemotionale Herausforderungen und Kommunikation. In methodischer Hinsicht wurde eine empirische Untersuchung mittels qualitativer Forschungsmethoden gewählt. Um sie darlegen zu können, wird zu Beginn des empirischen Teils das methodische Vorgehen erklärt, das konkret in der Durchführung von Leitfadeninterviews mit halbstandardisierten Fragen bestand. Es folgt die Beschreibung der gewonnenen Kategorien mit der Auswertung nach Mayring (2010), die mit der Theorie des Ökosystemischen Ansatzes (EST) nach Bronfenbrenner (1977) in Verbindung gebracht werden.
Entropy-Resolved Resonance Profiles: Non-Iterative Mathematics
Creators: name: Young, Christopher
Publisher: name: Zenodo
Year: 2025
Subjects: Non-Iterative Computation
Entropy-Weighted Methods
Mathematical Entropy
Self-Resolving Mathematics
Computational Efficiency
Nonlinear Stability
Global Optimization
Entropy Modulation
Harmonic Digit Extraction
High-Precision Numerical Methods
Computational Fluid Dynamics
Quantum Computation
High-Performance Computing
Chaotic System Stabilization
Cryptographic Randomness
Mathematical AI
Non-Iterative Neural Networks
Neural Networks
Loss Function Optimization
AI
Math
Computation

description: This paper introduces the Universal Mathematical Entropy Computation (UMEC) framework, a non-iterative, resonance-driven method for solving complex numerical problems across physics, computation, and mathematics. Unlike traditional methods that rely on iterative approximation, gradient descent, or probabilistic collapse, UMEC employs a fixed entropy-weighted transformation that selects physically and mathematically valid states via harmonic balance.

This math system underpins multiple other works, including:

The Nature of Constants – deriving 20+ fundamental physical constants from first principles with no empirical input.

Introduction to Q-Epsilon – redefining quantum mechanics as structured energy flow within a resonant vacuum.

Gravitational Field Measurements – offering mass-free gravitational field equations based on energy density.

The Natural Emergence of Physics – demonstrating how Pan reveals the structure behind the constants and equations we’ve taken for granted.

I invite readers not only to explore this document, but to read the broader collection of attached works, which build upon one another to form a complete reimagining of physical law and mathematical structure. 

If any part of this framework resonates with your work or inspires new ideas, I welcome correspondence and collaboration.
Reverse transcription, primer pools preparation and multiplex PCR steps for CHIKV serotype
Creators: name: Ceschini Machado, Laís
name: Wallau, Gabriel
name: Maria Inácio da Silva, Luisa
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 310509
subject: Genomics

description: This step-by-step protocol describes the cDNA synthesis, primer pools preparation and multiplex PCR conditions with the main goal to sequence the complete genome of CHIKV serotype strains.
Tensor Representation of Spin States
Creators: name: Giraud, O.
name: Braun, D.
name: Baguette, D.
name: Bastin, T.
name: Martin, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a generalization of the Bloch sphere representation for arbitrary spin states. It provides a compact and elegant representation of spin density matrices in terms of tensors that share the most important properties of Bloch vectors. Our representation, based on covariant matrices introduced by Weinberg in the context of quantum field theory, allows for a simple parametrization of coherent spin states, and a straightforward transformation of density matrices under local unitary and partial tracing operations. It enables us to provide a criterion for anticoherence, relevant in a broader context such as quantum polarization of light.
description: 5 pages + 7 pages of supplementary information
Neoadjuvant Paradigm for Accelerated Drug Development: An Ideal Model in Bladder Cancer
Creators: name: Woods, M. E.
name: Chism, D. D.
name: Milowsky, M. I.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Neoadjuvant cisplatin-based combination chemotherapy for muscle-invasive bladder cancer (MIBC) has been shown to confer a survival advantage in two randomized clinical trials and a meta-analysis. Despite level 1 evidence supporting its benefit, utilization remains dismal with nearly one-half of patients ineligible for cisplatin-based therapy because of renal dysfunction, impaired performance status, and/or coexisting medical problems. This situation highlights the need for the development of novel therapies for the management of MIBC, a disease with a lethal phenotype. The neoadjuvant paradigm in bladder cancer offers many advantages for accelerated drug development. First, there is a greater likelihood of successful therapy at an earlier disease state that may be characterized by less genomic instability compared with the metastatic setting, with an early readout of activity with results determined in months rather than years. Second, pre- and post-treatment tumor tissue collection in patients with MIBC is performed as the standard of care without the need for research-directed biopsies, allowing for the ability to perform important correlative studies and to monitor tumor response to therapy in “real time.” Third, pathological complete response (pT0) predicts for improved outcome in patients with MIBC. Fourth, there is a strong biological rationale with rapidly accumulating evidence for actionable targets in bladder cancer. This review focuses on the neoadjuvant paradigm for accelerated drug development using bladder cancer as the ideal model.
Why do protoplanetary disks appear not massive enough to form the known exoplanet population?
Creators: name: Manara, Carlo Felice
Publisher: name: Zenodo
Year: 2018

description: When and how planets form in protoplanetary disks is still a topic of discussion. Exoplanet detection surveys and protoplanetary disk surveys are now providing results that allow us to have new insights. We collect the masses of confirmed exoplanets and compare their dependence with stellar mass with the same dependence for protoplanetary disk masses measured in ∼1-3 Myr old star-forming regions. The latter are recalculated by us using the new estimates of their distances derived from Gaia DR2 parallaxes. We note that single and multiple exoplanetary systems form two different populations, probably pointing to a different formation mechanism for massive giant planets around very low mass stars. While expecting that the mass in exoplanetary systems is much lower than the measured disk masses, we instead find that exoplanetary systems masses are comparable or higher than the most massive disks. This same result is found also by converting the measured planet masses into heavy-element content (core masses for the giant planets and full masses for the super-Earth systems) and by comparing this value with the disk dust masses. Unless disk dust masses are heavily underestimated, this is a big conundrum. An extremely efficient recycling of dust particles in the disk cannot solve this conundrum. This implies that either the cores of planets have formed very rapidly (<0.1-1 Myr) and large amount of gas is expelled on the same timescales from the disk, or that disks are continuously replenished of fresh planet-forming material from the environment. These hypotheses can be tested by measuring disk masses in even younger targets and by better understanding if and how the disks are replenished by their surroundings.
Willingness to Pay for GM Soybean Oil and Labeling Effects
Creators: name: Kang, Hyeonjoo
name: Kang, Hyeonjoo
Publisher: name: Unknown
Year: 2020
Subjects: subject: Institutional and Behavioral Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: soybean oil
subject: genetically modified food
subject: random nth price auction

description: Korean laws require labeling for genetically modified (GM) food ingredients. But the labels exempt oils made from GM soybeans because they contain no genetic elements after being processed. Previous literature has documented willingness to pay (WTP) for various foods with GM labels. However, most studies used surveys and ignored the potential effects of food origins and labeling exemptions for highly refined GM foods. This paper is to explore consumer preferences and estimate willingness to pay for GM and non-GM soybean oils. For our research, we used the random nth price auction mechanism targeting a total of 73 consumers living in Seoul and metropolitan areas. The experiment consisted of sequential five rounds where each round built up accumulated information regarding the presence of GM ingredients, potential effects, the country of origin, and stricter labeling requirements. The study results revealed that consumers were willing to pay 18% more for non-GM oils, 28% more for domestically grown soybean ingredients, and 38% more for oils under full disclosure labeling rules. The findings by a random effect model indicated that the prior awareness of GM labels and the level of education were significant determinants of the willingness to pay.
The evolution of the inner regions of protoplanetary disks: a statistical study
Creators: name: Manzo Martínez, Ezequiel
Publisher: name: Zenodo
Year: 2018

description: We perform a statistical study to test the evolution of the inner regions of protoplanetary disks. We compare synthetic SEDs with near and mid-IR photometric data obtained for disk-bearing stars in stellar clusters of different ages.We use a modified version of the D'Alessio models, which include a parametrized approach for the curvature of the inner wall. We define a disk color excess (DCE) from observed IR colors and use the models to reproduce observed distributions of these DCEs, in the IRAC and MIPS 24 bands. We find that the decrease in the DCEs with the age is related to the degree of dust settling in the disk as well as the height of the inner wall. Our study shows that disks settle in very short timescales and at 5 Myr most of the disks have settled. We also find that at 1-3Myr, most of the disks have wall heights of 3.8H. At 5-10 Myr the wall heights are of the order of 0.5 H. This suggests that 5 Myr is a crucial stage where the disks reach a very advanced evolutionary stage. This is the first statistical study looking for trends of evolution, using observational constrains that include several stellar clusters with near and mid-IR data , in an age interval from 1-10Myr
Search for warm gas in debris disks with JWST
Creators: name: Rebollido, Isabel
name: Chen, Christine
name: Perrin, Marshall
name: Roberge, Aki
name: Cicero X. Lu
name: Debes, John H.
name: Moro-Martin, Amaya
Publisher: name: Zenodo
Year: 2022
Subjects: exocomets
JWST
debris disk

description: Observations in far-infrared and (sub-)mm wavelengths have found evidence for a non-negligible amount of gas around ~20 nearby main-sequence stars with debris disks. This gas, located in the outer regions of the systems, is likely to have originated via collisions or evaporation of planetesimals due to dynamical instabilities. Gas detected in the optical range with spectroscopy, located much closer to the star, and attributed to the presence of evaporating bodies, has also been found in these systems, pointing towards these objects, also known as exocomets, as a possible transportation mechanism for volatiles from the outer regions of planetary systems, beyond the snowline, to the inner regions where rocky planets are located.However, observations thus far have not been able to identify warm gas in intermediate regions, or the presence of water, and therefore we don't yet understand how the transportation mechanisms might compare to those observed in the solar system. We propose to use NIRSpec fixed slit mid-resolution observations in the 3 to 5 micron range to look for volatiles in a sample of 5 debris disk stars with known millimetric and optical gas, in particular targeting the 4.5-5 micron water features that is not observable from the ground. The detection of CO and water could not only help constrain the amount and temperature of gas, key in planet formation studies, but also shed light into the dynamics and architecture of planetary systems, and have implications in astrobiological studies, such as water delivery theories.
Second-Line Therapy for Advanced NSCLC
Creators: name: Weiss, J. M.
name: Stinchcombe, T. E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Most patients with lung cancer have non-small cell lung cancer (NSCLC) subtype and have advanced disease at the time of diagnosis. Improvements in both first-line and subsequent therapies are allowing longer survival and enhanced quality of life for these patients. The median overall survival observed in many second-line trials is approximately 9 months, and many patients receive further therapy after second-line therapy. The cytotoxic agents pemetrexed and docetaxel and the epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) erlotinib and gefitinib are standard second-line therapies. For patients with EGFR mutation, a TKI is the favored second-line therapy if not already used in first-line therapy. For patients without the EGFR mutation, TKIs are an option, but many oncologists favor cytotoxic therapy. The inhibitor of the EML4/ALK fusion protein, crizotinib, has recently become a standard second-line treatment for patients with the gene rearrangement and has promise for patients with the ROS1 rearrangement.
Thermodynamic Properties of Rashba Spin-Orbit-Coupled Fermi Gas
Creators: name: Zheng, Zhen
name: Pu, Han
name: Zou, Xubo
name: Guo, Guangcan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the thermodynamic properties of a superfluid Fermi gas subject to Rashba spin-orbit coupling and effective Zeeman field. We adopt a T-matrix scheme that takes beyond-mean-field effects, which are important for strongly interacting systems, into account. We focus on the calculation of two important quantities: the superfluid transition temperature and the isothermal compressibility. Our calculation shows very distinct influences of the out-of-plane and the in-plane Zeeman fields on the Fermi gas. We also confirm that the in-plane Zeeman field induces a Fulde-Ferrell superfluid below the critical temperature and an exotic finite-momentum pseudo-gap phase above the critical temperature.
description: 8 pages, 9 figures
The Financial Toxicity of Cancer Treatment: A Pilot Study Assessing Out-of-Pocket Expenses and the Insured Cancer Patient's Experience
Creators: name: Schrag, D.
name: Zafar, S. Y.
name: Goetzinger, A. M.
name: Zhong, X.
name: Peppercorn, J. M.
name: Taylor, D. H.
name: Abernethy, A. P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Cancer patients carry rising burdens of health care-related out-of-pocket expenses, and a growing number of patients are considered “underinsured.” Our objective was to describe experiences of insured cancer patients requesting copayment assistance and to describe the impact of health care expenses on well-being and treatment.
The magnetic obliquity of accreting T Tauri stars
Creators: name: McGinnis, Pauline
Publisher: name: Zenodo
Year: 2018

description: Accretion of matter from a T Tauri star's circumstellar disk is regulated by its magnetic field. The angle between the magnetic and rotational axes, the magnetic obliquity, is a crucial aspect of magnetospheric accretion models. It has strong implications on the structure of accretion/ejection flows and the occurrence of inner disk warps. We derive here the magnetic obliquity of a sample of 11 T Tauri stars in Taurus by monitoring HeI radial velocity variations along these stars' rotational cycles. The HeI 5876A emission line is produced in the accretion shock located at the base of the magnetic funnel flow. Whenever there is a misalignment between the magnetic and rotational axes, this line's radial velocity shows variability modulated by the stellar rotation with an amplitude that is directly related to the star's vsini (projected rotational velocity) and the latitude of the accretion shock. We find that most of the magnetic obliquities in our sample are between 5 and 15 degrees, with a few cases reaching nearly 30 degrees. We also investigate how these obliquities associate with other accretion signatures in the stellar spectra and with the stars' photometric variability.
The search for exocomets in photometry using CHEOPS
Creators: name: Rebollido, Isabel
name: Zieba, Sebastian
name: Iglesias, Daniela
name: Bourrier, Vincent
name: Kiefer, Flavien
name: Des Etangs, Alain Lecavelier
Publisher: name: Zenodo
Year: 2022
Subjects: exocomets
Cheops
photometry

description: The interest in minor bodies has grown significantly in the past decade, thanks to the growth of the exoplanetary field and their relevance in planetary system formation and architecture. Particularly, the presence of exocomets has been detected in spectroscopy as variable absorption events in metallic lines (mainly Ca II K and Na D) in several A-type stars. While spectroscopy allows the detection of the gas component of cometary tails, it wasn’t until the appearance of intensive exoplanet search photometric missions that the dust counterpart of these events was found, first with Kepler and then with TESS. Still, there is only one star where exocomets have been detected simultaneously using the two different techniques: Beta-Pic. In an attempt to enlarge this number, we proposed observations of the bright exocomet-host star, 5 Vulpeculae, with CHEOPS for a time span of almost 2 full days. We present here the negative results of the observations, and what have we learned from the experiment
Treatment of Older Patients With Head and Neck Cancer: A Review
Creators: name: Chera, B. S.
name: VanderWalde, N. A.
name: Fleming, M.
name: Weiss, J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: The incidence of head and neck cancer (HNC) in the elderly is increasing. The treatment of HNC often includes multimodality therapy that can be quite morbid. Older patients (herein, defined as ≥65 years) with HNC often have significant comorbidity and impaired functional status that may hinder their ability to receive and tolerate combined modality therapy. They have often been excluded from clinical trials that have defined standards of care. Therefore, tailoring cancer therapy for older patients with HNC can be quite challenging. In this paper, we performed a comprehensive literature review to better understand and discuss issues related to therapeutic recommendations that are particular to patients 65 years and older. Evidence suggests that older patients have similar survival outcomes compared with their younger peers; however, they may experience worse toxicity, especially with treatment intensification. Similarly, older patients may require more supportive care throughout the treatment process. Future studies incorporating geriatric tools for predictive and interventional purposes will potentially allow for improved patient selection and tolerance to intensive treatment.
title: Allt sitter inte i språket...
Creators: name: Nüchtern, Hannah
Year: 2022

description: Die vorliegende Arbeit beschäftigt sich mit Mehrsprachigkeit und ihrer Funktion in ausgewählten Beispielen samischer Literatur aus Schweden, einem Staat, der oft vermeintlich als einsprachig wahrgenommen wird. Überdies liegt der Fokus auf der Rolle von Mehrsprachigkeit an der Schnittstelle von Identitätskonstruktion und Raumkonzepten, nicht zuletzt, da samische Sprachbeherrschung und Verwurzelung in Sápmi häufig als Garanten für authentisch-samische Identität erachtet werden. Die aktuelle Situation der samischen Sprachen, welche alle bedroht sind, ist auf die Kolonialgeschichte in Sápmi zurückzuführen. Deswegen wird postkoloniale Theorie für die Literaturanalyse utilisiert und deren Einfluss auf die Mehrsprachigkeitsforschung untersucht. In der Methodologie erwies sich bordering als essenzielles Werkzeug: die Erforschung der Prozesse welche an der Erschaffung, Überschreitung und Auflösung von (sprachlichen) Grenzen beteiligt sind. Die Primärliteratur wird eingehend auf mehrere Aspekte erforscht, darunter Authentizitätsvergewisserung durch Sprache, Raumrepräsentationen, Codemixing und Kolonialgeschichte. Resultate aus der Analyse zeigen, dass die Vorstellung von Sprachkenntnis als Grundlage für Identität in den vorliegenden Narrativen oft dekonstruiert wird. Weiters zeigt sich, dass die Vorstellung eines Textes als einsprachig nicht länger zulässig ist, sobald die Engführungen nationaler Philologien überschritten werden – eine Begutachtung des Codemixing ergibt, dass Sprachgrenzen weitaus prozesshafter und instabiler sind, als es den Anschein haben mag. Darüber hinaus erweist sich Mehrsprachigkeit als Ausgangspunkt, welcher die Verhandlung anderer politischer Themen wie Landrechte und die Aufarbeitung der kolonialen Vergangenheit ermöglicht.
Heifer Price Discount to Steers in Tennessee Calves and Feeder Cattle
Creators: name: Griffith, Andrew P.
name: Griffith, Andrew P.
Publisher: name: Unknown
Year: 2023
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: cattle
subject: heifer
subject: prices
subject: discount

description: Cow-calf producers breed cows that then produce bull or heifer calves. Producers then can make management decisions to influence the selling price of these animals in a number of ways. One of those decisions is to castrate bull calves or to leave them intact at the time of marketing. Martinez (2020) provides details as it relates to the price discount for bull calves relative to steer calves in Tennessee. He demonstrates that bull calves are discounted compared to similar weight steers and that the price discount for bulls increases as weight of the animal increases. Similar to bull calves being discounted relative to steer calves, heifers are typically discounted relative to steers. However, the management decisions associated with navigating the heifer price discount is not as clear as turning a bull into a steer. In natural service breeding, where the bull physically breeds the cows, a cow-calf producer can expect half of the calves to be bulls and half to be heifers at birth. One management decision that can be made to increase the number of animals of a certain sex to be born is to use sexed semen in an artificial insemination protocol. However, this may be cost prohibitive for many cow-calf producers. Thus, producers are left to navigate the heifer price discount with approximately half of the annual calf crop. The reason heifers experience a price discount relative to steers is largely associated with feed conversion and lower daily rates of gain, which results in a higher cost of gain for heifers relative to steers (Williams et al. 2002). Thus, buyers of heifers must pay less for the heifers relative to steers to experience similar profitability margins. With the understanding of these reduced efficiencies, cattle producers look for ways to reduce the impact of these price discounts and add value to heifers. Given these typical market characteristics, several ques- tions arise as it relates to heifer price discounts and marketing strategies. Thus, the purpose of this publication is to: 1. Evaluate changes in heifer price discounts to steers in Tennessee by weight class from 2001 to 2022, 2. Compare seasonal heifer price discounts on a monthly basis, and 3. Discuss management decisions that may be beneficial in some circumstances.
The role of bars in AGN fueling in disk galaxies over the last seven billion years
Creators: name: Cisternas, Mauricio
name: Sheth, Kartik
name: Salvato, Mara
name: Knapen, Johan H.
name: Civano, Francesca
name: Santini, Paola
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present empirical constraints on the influence of stellar bars on the fueling of active galactic nuclei (AGNs) out to z=0.84 using a sample of X-ray-selected AGNs hosted in luminous non-interacting face-on and moderately inclined disk galaxies from the Chandra COSMOS survey. Using high-resolution Hubble Space Telescope imaging to identify bars, we find that the fraction of barred active galaxies displays a similar behavior as that of inactive spirals, declining with redshift from 71% at z~0.3, to 35% at z~0.8. With active galaxies being typically massive, we compare them against a mass-matched sample of inactive spirals and show that, while at face value the AGN bar fraction is slightly higher at all redshifts, we cannot rule out that the bar fractions of active and inactive galaxies are the same. The presence of a bar has no influence on the AGN strength, with barred and unbarred active galaxies showing equivalent X-ray luminosity distributions. From our results, we conclude that the occurrence and the efficiency of the fueling process is independent of the large scale structure of a galaxy. The role of bars, if any, may be restricted to providing the suitable conditions for BH fueling to occur, i.e., bring a fresh supply of gas to the central 100 pc. At the high-redshift end, we find that roughly 60% of active disk galaxies are unbarred. We speculate this to be related with the known dynamical state of disks at higher redshifts---more gas-rich and prone to instabilities than local spirals---which could also lead to gas inflows without the need of bars.
description: 10 pages, 7 figures, ApJ in press; minor edits to match published version
High harmonic generation in undoped graphene: Interplay of inter- and intraband dynamics
Creators: name: Al-Naib, Ibraheem
name: Sipe, J. E.
name: Dignam, Marc M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop a density matrix formalism in the length gauge to calculate the nonlinear response of intrinsic monolayer graphene at terahertz frequencies. Employing a tight-binding model, we find that the interplay of the interband and intraband dynamics leads to strong harmonic generation at moderate field amplitudes. In particular, we find that at low temperature, the reflected field of undoped suspended graphene exhibits a third harmonic amplitude that is 32% of the fundamental for an incident field of 100 V/cm. Moreover, we find that up to the seventh harmonic and beyond are generated.
Transient Impulsive Giant Electronic Raman Redistribution
Creators: name: Miyabe, S.
name: Bucksbaum, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Resonant Raman excitation by ultrafast vacuum ultraviolet laser pulses is a powerful means to study electron dynamics in molecules, but experiments must contend with linear background ionization: frequencies high enough to reach resonant core-valence transitions will usually ionize all occupied orbitals as well, and the ionization cross sections are usually dominant. Here we show that attosecond pulses can induce a process, transient impulsive stimulated Raman scattering, which can overwhelm valence ionization. Calculations are performed for atomic sodium, but the principal is valid for many molecular systems. This approach opens the path for high fidelity multidimensional spectroscopy with attosecond pulses.
description: Main text
BYOD security behaviour and preferences among hospital clinicians – A qualitative study
Creators: name: Wani, Tafheem
name: Mendoza, Antonette
name: Gray, Kathleen
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 32
subject: Biomedical and clinical sciences
classificationCode: 46
subject: Information and computing sciences
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: Abstract:-  Background/Objective: The use of personal devices for work purposes (Bring-your-own-device) has increased in hospitals, as it facilitates productivity and mobility for clinicians. However, owing to increased risk of leaking patient information, and heavy reliance of patient data privacy on user actions, BYOD is a major challenge for hospitals. There has been a dearth of empirical research studying clinicians’ BYOD security behaviour. Therefore, the study’s aim was to attain subjective understanding of clinicians’ attitudes and preferences towards protecting patient data on their devices through a qualitative study. Methods: 14 semi-structured interviews were conducted among Australian hospital-based clinicians. A hybrid thematic analysis was conducted using the framework method to explore socio-technical themes pertaining to the clinicians’ BYOD security behavioural practices. Results: Limited use of secure tools like antivirus and passcodes, and inadequate separation of patient and personal data on BYOD devices was found. Key technology concerns included malware introduction into hospital network, inadvertent patient data sharing, and slow remote access. Hospitals lacked dedicated BYOD policies and training, resulting in unsafe practices. Participants also cited misalignment of BYOD policies with workflow needs, privacy maintenance challenges and fears of personal data breaches, while calling for improved communication between technical and clinical staff and a strong cybersecurity culture. Conclusion: This study provides a comprehensive understanding of BYOD related user behaviour and the usefulness of security controls used in time-sensitive and complex hospital environments. It can inform future policies or processes by advocating for secure and productive BYOD use.
Time- and spatially resolved observations for pre-transitional disk of GM Aur.
Creators: name: Mori, Tomohiro
Publisher: name: Zenodo
Year: 2018

description: Various observations have revealed that many transitional disks have non-uniform spatial structures possibly generated by disk-planet interactions. To investigate the presence of those non-uniform structures at very close to the star, we performed monitoring observations for young stellar objects (YSOs) hosting transitional disks from 2012 to 2015. We present light curve of one object GM Aur, which has been known to have cavity structure extending ~20 au in radius. We detect significant variability in I-(0.8 microns), R-(0.69 microns) and V- (0.55 microns). The reddening is consistent with dust extinction with Rv=5.5. A 5.98-days periodicity is also significantly found with a periodogram analysis. These results indicate that the observed variability can be mainly attributed to dusty clump orbiting at near the co-rotation radius (0.08 au) of the object. To investigate this object further, we performed VLTI/AMBER data reduction. An extended structure with radius of > 0.5 au is spatially resolved. Radiative transfer modeling with RADMC-3D indicates the presence of ring component with temperature of 800 K in the inner disk at 0.5 au.
Quantum probabilities from combination of Zurek's envariance and Gleason's theorem
Creators: name: Nenashev, A. V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum-mechanical rule for probabilities, in its most general form of positive-operator valued measure (POVM), is shown to be a consequence of the environment-assisted invariance (envariance) idea suggested by Zurek [Phys. Rev. Lett. 90, 120404 (2003)], being completed by Gleason's theorem. This provides also a method for derivation of the Born rule.
description: 6 pages, 4 figures, little cosmetic changes compared to the previous version
Electronic and magnetic properties of Ti4O7 predicted by self-interaction corrected density functional theory
Creators: name: Zhong, Xiaoliang
name: Rungger, Ivan
name: Zapol, Peter
name: Heinonen, Olle
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Understanding electronic properties of sub-stoichiometric phases of titanium oxide such as Magnéli phase Ti4O7 is crucial in designing and modeling resistive switching devices. Here we present our study on Magnéli phase Ti4O7 together with rutile TiO2 and Ti2O3 using density functional theory methods with atomic-orbital-based self-interaction correction (ASIC). We predict a new antiferromagnetic ground state in the low temperature phase (or LT phase), and we explain energy difference with a competing antiferromagnetic state using a Heisenberg model. The predicted energy ordering of these states in the LT phase is calculated to be robust in a wide range of modeled isotropic strain. We have also investigated the dependence of the electronic structures of the Ti-O phases on stoichiometry. The splitting of titanium t2g orbitals is enhanced with increasing oxygen deficiency as Ti-O is reduced. The electronic properties of all these phases can be reasonably well described by applying ASIC with a standard value for transition metal oxides of the empirical parameter α of 0.5 representing the magnitude of the applied self-interaction correction.
Guiding policies and investments to reduce agriculture-led deforestation in Viet Nam – Expanding beef and dairy sectors, while reducing deforestation risks
Creators: name: Ilicic, Joanna
name: Crespi, Maria Giulia
name: Maggio, Giuseppe
name: Kwon, Jihae
name: Ngoc Nguyen, Hanh Thi
name: Mamidanna, Sravya
name: Ignaciuk, Adriana
name: Ilicic, Joanna
name: Crespi, Maria Giulia
name: Maggio, Giuseppe
name: Kwon, Jihae
name: Ngoc Nguyen, Hanh Thi
name: Mamidanna, Sravya
name: Ignaciuk, Adriana
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agricultural and Food Policy
subject: agricultural sector
subject: agricultural development
subject: beef
subject: milk production
subject: impact assessment
subject: primary forests deforestation
subject: policies investment
subject: case studies
subject: Viet Nam

description: The study unpacks the potential, current and future, linkages between beef and dairy development and deforestation, using Nghe An and Ha Tinh provinces in Viet Nam as case study, where the beef and dairy production increases are important and potential impact on the primary forests is of particular concern. It shows how beef and dairy expansion creates demand for additional land, which combined with existing land constraints, increases risk of further deforestation. The study also proposes possible entry points for developing deforestation-free value chains, which are key for decision-makers to enact new policies to overcome the dual challenge of agriculture growth without forest loss, which is likely to intensify if no action is taken.
description: FAO Document Repository: https://doi.org/10.4060/cc2621en
Tracing the inner circumstellar disk via photometric variability studies
Creators: name: Petr-Gotzens, Monika
Publisher: name: Zenodo
Year: 2018

description: Stellar accretion during the pre-main sequence phase is known to occur in non-periodic, often intense, bursts. These accretion bursts are accompanied by strong photometric brightness variations of the star, typically on time-scales of months or longer. At the same time smaller amplitude changes in the pre-main sequence star's light curve, on time scales of weeks and days, are expected due to inner disk warps and accretion columns that move into the line of sight as the star-disk system rotates. In this contribution we present our observational programme to study the variability of several hundreds of PMS stars in the low metallicity environment of the Magellanic Clouds. The signatures of the photometric variability shall allow us to obtain evidence for the accretion phenomena (bursts or steady accretion) and inner disk morphologies present for PMS stars in the Magellanic Clouds. Comparisons with Galactic samples will show if/how metallicity plays a role for the physics of accretion from the inner circumstellar disk and its evolution.
A Community-Based Multicenter Trial of Pharmacokinetically Guided 5-Fluorouracil Dosing for Personalized Colorectal Cancer Therapy
Creators: name: Inzerillo, J. J.
name: Olajide, O. A.
name: Patel, J. N.
name: Deal, A. M.
name: Atluri, P. M.
name: McLeod, H. L.
name: Walko, C. M.
name: Chay, C. H.
name: Ibrahim, J. G.
name: O'Neil, B. H.
name: Sherrill, G. B.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Pharmacokinetically guided (PK-guided) versus body surface area-based 5-fluorouracil (5-FU) dosing results in higher response rates and better tolerability. A paucity of data exists on PK-guided 5-FU dosing in the community setting.
Active nematic materials with substrate friction
Creators: name: Thampi, Sumesh P.
name: Golestanian, Ramin
name: Yeomans, Julia M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Active turbulence in dense active systems is characterized by high vorticity on a length scale that is large compared to that of individual entities. We describe the properties of active turbulence as momentum propagation is screened by frictional damping. As friction is increased, the spacing between the walls in the nematic director field decreases as a consequence of the more rapid velocity decays. This leads to, first, a regime with more walls and an increased number of topological defects, and then to a jammed state in which the walls deliminate bands of opposing flow, analogous to the shear bands observed in passive complex fluids.
Collective Mode at Lifshitz Transition in Iron-Pnictide Superconductors
Creators: name: Rodriguez, J. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We obtain the exact low-energy spectrum of two mobile holes in a t-J model for an isolated layer in an iron-pnictide superconductor. The minimum d xz and d yz orbitals per iron atom are included, with no hybridization between the two. After tuning the Hund coupling to a putative quantum critical point (QCP) that separates a commensurate spin-density wave from a hidden-order antiferromagnet at half filling, we find an s-wave hole-pair groundstate and a d-wave hole-pair excited state. Near the QCP, both alternate in sign between hole Fermi surface pockets at the Brillouin zone center and emergent electron Fermi surface pockets at momenta that correspond to commensurate spin-density waves (cSDW). The dependence of the energy splitting with increasing Hund coupling yields evidence for a true QCP in the thermodynamic limit near the putative one, at which the s-wave and d-wave Cooper pairs are degenerate. A collective s-to-d-wave oscillation of the macroscopic superconductor that couples to orthorhombic shear strain is also identified. Its resonant frequency is predicted to collapse to zero at the QCP in the limit of low hole concentration. This implies degeneracy of Cooper pairs with s, d and s+id symmetry in the corresponding quantum critical state. We argue that the critical state describes Cooper pairs in hole-doped iron superconductors at the Lifshitz transition, where electron bands first rise above the Fermi level. We thereby predict that the s-to-d-wave collective mode observed by Raman spectroscopy in Ba1-xKxFe2As2 at optimal doping should also be observed at higher doping near the Lifshitz transition.
description: 30 pages, 6 figures, 3 tables + supplemental material. Comparison to Ba1-xKxFe2As2 series
Extended He I Emission from DG Tau
Creators: name: Pyo, Tae-Soo
Publisher: name: Zenodo
Year: 2018

description: We present spatially resolved 1.06-2.08 um IFU spectra towaard DG Tau obtained by AO assisted NIFS/GEMINI. We found that the He I 1.083 um emission is extended along the [Fe II] jet direction both blueshifted and redshifted side. The peak velocity is increasing from 0 to the [Fe II] jet velocity (~ 100 km/s) with the distance. The velocity width of He I emission is 2.35 times wider than that of [Fe II] 1.257 um. He I shows P-Cygni profile with blueshifted absorption and broad emission around the rest velocity. The spatial extension and broad velocity width are represented that the He I emission has dual origins both shock in collimated jet and stellar wind close to star.
Resolving dusty wind of RW Aur A (poster)
Creators: name: Safonov, Boris
Publisher: name: Zenodo
Year: 2018

description: RW Aur is a young star with protoplanetary disk. The star shows irregular eclipses similar to UXORs, but with larger amplitude and duration. It also demonstrates extraordinary high polarization degree in minimum light. These features may be explained by emergence of dusty wind in 2010 (Dodin et al 2018, submitted). We observed the object using speckle polarimetry in 0.5-0.8 mkm range using a dedicated instrument installed at 2.5-m telescope of SAI MSU. The instrument combines features of speckle interferometer and two-beam polarimeter. We detected a fan-shaped reflection nebula on the angular scale 50-100 mas in the closest vicinity of the RW Aur A. The parameters of this nebulosity are consistent with suggestion that it is actually dust expelled from protoplanetary disk by the wind.