cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mutual algebraicity and cellularity
Creators: name: Braunfeld, Samuel
name: Laskowski, Michael C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03C15

description: We prove two results intended to streamline proofs about cellularity that pass through mutual algebraicity. First, we show that a countable structure $M$ is cellular if and only if $M$ is $ω$-categorical and mutually algebraic. Second, if a countable structure $M$ in a finite relational language is mutually algebraic non-cellular, we show it admits an elementary extension adding infinitely many infinite MA-connected components. Towards these results, we introduce MA-presentations of a mutually algebraic structure, in which every atomic formula is mutually algebraic. This allows for an improved quantifier elimination and a decomposition of the structure into independent pieces. We also show this decomposition is largely independent of the MA-presentation chosen.
description: 18 pages; to appear in Archive for Mathematical Logic
Complete Subset Averaging for Quantile Regressions
Creators: name: Lee, Ji Hyung
name: Shin, Youngki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Econometrics (econ.EM)
subject: Methodology (stat.ME)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: We propose a novel conditional quantile prediction method based on complete subset averaging (CSA) for quantile regressions. All models under consideration are potentially misspecified and the dimension of regressors goes to infinity as the sample size increases. Since we average over the complete subsets, the number of models is much larger than the usual model averaging method which adopts sophisticated weighting schemes. We propose to use an equal weight but select the proper size of the complete subset based on the leave-one-out cross-validation method. Building upon the theory of Lu and Su (2015), we investigate the large sample properties of CSA and show the asymptotic optimality in the sense of Li (1987). We check the finite sample performance via Monte Carlo simulations and empirical applications.
description: 46 pages, 3 figures, 9 tables
Asymptotic properties of generalized D-solutions to the stationary axially symmetric Navier-Stokes equations
Creators: name: Li, Zijin
name: Pan, Xinghong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q30, 76D05

description: In this paper, we derive asymptotic properties of both the velocity and the vorticity fields to the 3-dimensional axially symmetric Navier-Stokes equations at infinity under the generalized D-solution assumption $\int_{\mathbb{R}^3}|\nabla u|^qdx<\infty$ for $2
description: 24 pages. Final version, to appear in Commun. Contemp. Math
Petal Projections, Knot Colorings and Determinants
Creators: name: Henrich, Allison
name: Truax, Robin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57K10

description: An übercrossing diagram is a knot diagram with only one crossing that may involve more than two strands of the knot. Such a diagram without any nested loops is called a petal projection. Every knot has a petal projection from which the knot can be recovered using a permutation that represents strand heights. Using this permutation, we give an algorithm that determines the $p$-colorability and the determinants of knots from their petal projections. In particular, we compute the determinants of all prime knots with crossing number less than $10$ from their petal permutations.
description: 27 pages, 19 figures, 11 tables
A physiologically based pharmacokinetic model for the transdermal uptake of semivolatile organic compounds from the atmosphere and through clothing
Creators: name: Simon, Laurent
name: Biswas, Abishek
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: This study focuses on the semivolatile organic compound (SVOC) absorption through clothing and the skin. SVOCs are ubiquitous in daily life, in products like personal care items, plastics, and building materials. Understanding their permeation through the skin barrier is crucial for evaluating potential health risks of complete exposure. A PBPK model was developed to comprehend the dynamic interplay between SVOCs and human skin and to estimate tissue distribution throughout the body. The framework incorporated parameters such as skin permeability, physicochemical properties of the chemicals, and the impact of protective clothing and adsorbents. This model predicted the rate and extent of SVOC absorption under diverse scenarios. The PBPK predictions matched the experimental amount of mono-ethyl phthalate (MEP), a phthalate metabolite, when urine samples were collected for bare-skinned and clothed participants. Urine concentrations of MEP during a 6-hr exposure and for the next 48 hr show that clean clothing effectively decreased dermal uptake and the buildup of chemicals in the body. Additional removal of MEP was achieved through adsorption on activated carbon fabric. An increase in the maximum monolayer adsorption capacity or the Langmuir equilibrium constant further reduced the amount of MEP in the urine.
The role of personal protective equipment (PPE) in reducing firefighter exposure to chemical hazards: A systematic review
Creators: name: Chakr, Nicole
name: Sav, Adem
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Molecular Biology
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: This paper aims to investigate the effectiveness of personal protective equipment (PPE) in reducing firefighter exposure to various hazardous chemicals from the smoke emitted during fires. A systematic review of peer-reviewed articles was undertaken utilizing five databases: Medline, Embase, Web of Science, Scopus, and CINHAL. Studies published between 2013 and 2023 that investigated the effectiveness of PPE in reducing firsthand exposure to at least one chemical were included. Extracted data were grouped into two overarching themes related to PPE: (a) Respiratory Protection and (b) Personal Protective Clothing (PPC). Overall, 21 studies met the inclusion criteria and were considered for further analysis. Respiratory protection, particularly self-contained breathing apparatus (SCBA), offered the most protection in preventing inhalation exposure to chemical hazards. There was limited evidence on the effectiveness of firefighter turnout gear in reducing skin contamination. Combustion contaminants, especially highly volatile compounds like benzene, were found to permeate and penetrate through and around the protective clothing. In conclusion, certain respirators, particularly SCBA, provided the best protection against inhalation exposure to chemicals; however, PPC did not appear to provide complete protection, particularly against the more volatile chemicals like benzene.
An extra-components method for evaluating fast matrix-vector multiplication with special functions
Creators: name: Terekhov, Andrew V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In calculating integral or discrete transforms, use has been made of fast algorithms for multiplying vectors by matrices whose elements are specified as values of special (Chebyshev, Legendre, Laguerre, etc.) functions. The currently available fast algorithms are several orders of magnitude less efficient than the fast Fourier transform. To achieve higher efficiency, a convenient general approach for calculating matrix-vector products for some class of problems is proposed. A series of fast simple-structure algorithms developed under this approach can be efficiently implemented with software based on modern microprocessors. The method has a pre-computation complexity of $O(N^2 \log N)$ and an execution complexity of $O(N \log N)$. The results of computational experiments with the algorithms show that these procedures can decrease the calculation time by several orders of magnitude compared with a conventional direct method of matrix-vector multiplication.
Airborne trichloramine in indoor swimming pools in Sweden
Creators: name: Johannesson, Sandra
name: Eriksson, Kåre
name: Wastensson, Gunilla
name: Westerlund, Jessica
name: Graff, Pål
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Plant Biology
subject: Computational Biology

description: Trichloramine is a disinfection by-product in chlorinated swimming pools. It can evaporate into the air and irritate eyes and airways among swimmers and pool workers. This study aimed to evaluate airborne concentrations of trichloramine in different types of indoor swimming pools. Altogether, 72 swimming pools across Sweden were included; 36 exercise pools, 16 instruction pools, seven adventure pools, and 13 rehabilitation pools. In total, 167 sampling sessions were performed with the majority (N = 91) conducted in public exercise pools. Repeated sampling sessions on different days were performed within all pool categories. Airborne trichloramine was measured stationary by the poolside using active sampling on quartz filters. In total, 434 air samples were collected. The geometric mean (GM) concentration of trichloramine for the exercise pools was 0.12 mg/m3 (range GMpool: 0.02–0.29 mg/m3) and for about 30% the GMpool exceeded the Swedish public health guideline value (0.2 mg/m3). The geometric mean for instruction pools was 0.18 mg/m3 and for adventure pools 0.20 mg/m3. Trichloramine concentrations were statistically significantly lower in rehabilitation pools (GM: 0.03 mg/m3) compared with the other pool categories. A statistically significant effect of time of the day for sampling was found for the exercise and instruction pools, with higher trichloramine levels during evenings compared with mornings and afternoons. For the rehabilitation pools, trichloramine was significantly higher during the cold season compared with the warm season. Variability in trichloramine concentrations was attributed to between-pool as well as within-pool variances. The within-pool variability encourages a repeated sampling strategy to capture the variation between different days. These findings have implications for exposure assessment in epidemiological studies as well as for indoor air quality monitoring. Trichloramine can cause acute irritative effects at elevated levels, and since trichloramine concentrations may differ depending on the time of the day it is recommended that full-day stationary measurements are supplemented with short-term samplings to capture these variations.
The dust-to-gas ratio, size distribution, and dust fall-back fraction of comet 67P/Churyumov-Gerasimenko: Inferences from linking the optical and dynamical properties of the inner comae
Creators: name: Marschall, Raphael
name: Markkanen, Johannes
name: Gerig, Selina-Barbara
name: Pinzón-Rodríguez, Olga
name: Thomas, Nicolas
name: Wu, Jong-Shinn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: In this work, we present results that simultaneously constrain the dust size distribution, dust-to-gas ratio, fraction of dust re-deposition, and total mass production rates for comet 67P/Churyumov-Gerasimenko. We use a 3D Direct Simulation Monte Carlo (DSMC) gas dynamics code to simulate the inner gas coma of the comet for the duration of the Rosetta mission. The gas model is constrained by ROSINA/COPS data. Further, we simulate for different epochs the inner dust coma using a 3D dust dynamics code including gas drag and the nucleus' gravity. Using advanced dust scattering properties these results are used to produce synthetic images that can be compared to the OSIRIS data set. These simulations allow us to constrain the properties of the dust coma and the total gas and dust production rates. We determined a total volatile mass loss of $(6.1 \pm 1.5) \cdot 10^9$~kg during the 2015 apparition. Further, we found that power-laws with $q=3.7^{+0.57}_{-0.078}$ are consistent with the data. This results in a total of $5.1^{+6.0}_{-4.9}\cdot10^9$~kg of dust being ejected from the nucleus surface, of which $4.4^{+4.9}_{-4.2}\cdot10^9$~kg escape to space and $6.8^{+11}_{-6.8}\cdot10^8$~kg (or an equivalent of $14^{+22}_{-14}$~cm over the smooth regions) is re-deposited on the surface. This leads to a dust-to-gas ratio of $0.73^{+1.3}_{-0.70}$ for the escaping material and $0.84^{+1.6}_{-0.81}$ for the ejected material. We have further found that the smallest dust size must be strictly smaller than $\sim30μ$m and nominally even smaller than $\sim12μ$m.
description: accepted 26 May 2020, 26 pages, 11 figures
Comparison of Intubating Conditions with Succinylcholine Versus Rocuronium in the Prehospital Setting
Creators: name: Ramsey, JT
name: Pache, Killian M.
name: Sayre, Michael R.
name: Maynard, Charles
name: Johnson, Nicholas J.
name: Counts, Catherine R.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Rapid sequence intubation (RSI) is frequently performed by emergency medical services (EMS). We investigated the relationship between succinylcholine and rocuronium use and time until first laryngoscopy attempt, first-pass success, and Cormack-Lehane (CL) grades. We included adult patients for whom prehospital RSI was attempted from July 2015 through June 2022 in a retrospective, observational study with pre-post analysis. Timing was verified using recorded defibrillator audio in addition to review of continuous ECG, pulse oximetry, and end-tidal carbon dioxide waveforms. Our primary exposure was neuromuscular blocking agent (NMBA) used, either rocuronium or succinylcholine. Our prespecified primary outcome was the first attempt Cormack-Lehane view. Key secondary outcomes were first laryngoscopy attempt success rate, timing from NMBA administration to first attempt, number of attempts, and hypoxemic events. Of 5,179 patients in the EMS airway registry, 1,475 adults received an NMBA while not in cardiac arrest. Cormack-Lehane grades for succinylcholine and rocuronium were similar: grade I (64%, 59% [95% CI 0.64–1.09]), grade II (16%, 21%), grade III (18%, 16%), grade IV (3%, 3%). The median interval from NMBA administration to start of the first attempt was 57 s for succinylcholine and 83 s for rocuronium (mean difference 28 [95% CI 20–36] seconds). First attempt success was 84% for succinylcholine and 83% for rocuronium. Hypoxemic events were present in 25% of succinylcholine cases and 23% of rocuronium cases. Prehospital use of either rocuronium or succinylcholine is associated with similar Cormack-Lehane grades, first-pass success rates, and rates of peri-intubation hypoxemia.
Epidemiology of human mycotic keratitis in Tanta University Ophthalmology Hospital
Creators: name: El-Badry, Anwer
name: Mahmoud, Yehia
name: Abul-Souod, Soad
name: El-Shorbagy, M. Sameh
Publisher: name: Egyptian Society of Experimental Biology
Year: 2013

description: The target of the present study was to evaluate the spreading mycotic infection of human corneal ulcers on the basis of the predisposing factors. Contact lens users and farmers were found to be more susceptible for mycotic keratitis; also immunocompromised male patients aged more than 40 years with rural residence were the most frequent inhabitants of fungal corneal ulcers, during summer, and spring seasons. Aspergillus flavus and Aspergillus niger were the most common species, isolated from the studied mycotic keratitis cases, mostly causing central corneal lesions in right more than left eyes. On the other hand, out of 595 cases of different types of corneal ulcers, fungi were isolated from 50 cases.
Sparse HP Filter: Finding Kinks in the COVID-19 Contact Rate
Creators: name: Lee, Sokbae
name: Liao, Yuan
name: Seo, Myung Hwan
name: Shin, Youngki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Econometrics (econ.EM)
subject: Applications (stat.AP)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: In this paper, we estimate the time-varying COVID-19 contact rate of a Susceptible-Infected-Recovered (SIR) model. Our measurement of the contact rate is constructed using data on actively infected, recovered and deceased cases. We propose a new trend filtering method that is a variant of the Hodrick-Prescott (HP) filter, constrained by the number of possible kinks. We term it the $\textit{sparse HP filter}$ and apply it to daily data from five countries: Canada, China, South Korea, the UK and the US. Our new method yields the kinks that are well aligned with actual events in each country. We find that the sparse HP filter provides a fewer kinks than the $\ell_1$ trend filter, while both methods fitting data equally well. Theoretically, we establish risk consistency of both the sparse HP and $\ell_1$ trend filters. Ultimately, we propose to use time-varying $\textit{contact growth rates}$ to document and monitor outbreaks of COVID-19.
description: 42 pages, 15 figures, 1 table
The effects of underwater diving on the lung function of divers in coastal areas of tourism destinations: A cross-sectional study in North Sulawesi Province, Indonesia
Creators: name: Danes, Vennetia R.
name: Sumakud, Vickers J. R.
name: Rumampuk, Jimmy F.
name: Kaseke, Martha M.
name: Fujiyanto
name: Pandaleke, Herry E. J.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy

description: North Sulawesi is renowned for its captivating underwater tourism, attracting SCUBA divers and traditional divers. Given the potential impact of diving activities on lung function, this study aims to explore differences in lung function among self-contained breathing apparatus (SCUBA) diving tourism workers, traditional divers utilizing breathing air compressors and air lines, and non-divers within the coastal areas of tourism destinations in North Sulawesi. Employing a descriptive comparative study with a cross-sectional approach, 90 subjects were categorized into three groups, and selected through simple random sampling. Spirometry was utilized for data collection, and Analysis of Variance (ANOVA) was employed for comparisons, with post hoc analysis for specific differences. The ANOVA analysis revealed significant variations in FVC Predicted, FVC Measured, FEV1, and obstruction and restriction values among SCUBA divers, traditional divers, and non-divers with a level of significance of p < 0.05. Post hoc analysis exhibited noteworthy distinctions in FVC Predicted, FVC Measured, and FEV1 between traditional divers and non-divers, and between SCUBA divers and traditional divers (p < 0.00). Obstruction values showed differences between SCUBA divers and traditional divers (p = 0.012), while restriction values indicated disparities between traditional divers and non-divers (p = 0.019). In conclusion, there were significant variations in lung function among SCUBA diving tourism workers, traditional divers using compressors and air lines, and non-divers within the coastal areas of tourism destinations in North Sulawesi.
The Compact Star-Forming Galaxies at $2
Creators: name: Lu, Shiying
name: Gu, Yizhou
name: Fang, Guanwen
name: Yuan, Qirong
name: Bao, Min
name: Guo, Xiaotong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the differences in the stellar population properties, the structure, and the environment between massive compact star-forming galaxies (cSFGs) with or without active galactic nucleus (AGN) at $2
description: to be published in PASP
Deep Learning Based Single Sample Per Person Face Recognition: A Survey
Creators: name: Liu, Fan
name: Chen, Delong
name: Wang, Fei
name: Li, Zewen
name: Xu, Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Face recognition has long been an active research area in the field of artificial intelligence, particularly since the rise of deep learning in recent years. In some practical situations, each identity has only a single sample available for training. Face recognition under this situation is referred to as single sample face recognition and poses significant challenges to the effective training of deep models. Therefore, in recent years, researchers have attempted to unleash more potential of deep learning and improve the model recognition performance in the single sample situation. While several comprehensive surveys have been conducted on traditional single sample face recognition approaches, emerging deep learning based methods are rarely involved in these reviews. Accordingly, we focus on the deep learning-based methods in this paper, classifying them into virtual sample methods and generic learning methods. In the former category, virtual images or virtual features are generated to benefit the training of the deep model. In the latter one, additional multi-sample generic sets are used. There are three types of generic learning methods: combining traditional methods and deep features, improving the loss function, and improving network structure, all of which are covered in our analysis. Moreover, we review face datasets that have been commonly used for evaluating single sample face recognition models and go on to compare the results of different types of models. Additionally, we discuss problems with existing single sample face recognition methods, including identity information preservation in virtual sample methods, domain adaption in generic learning methods. Furthermore, we regard developing unsupervised methods is a promising future direction, and point out that the semantic gap as an important issue that needs to be further considered.
description: Published in Artificial Intelligence Review
SARS-CoV-2 tropism to intestinal but not gastric epithelial cells is defined by limited ACE2 expression
Creators: name: Paužuolis, Mindaugas
name: Fatykhova, Diana
name: Zühlke, Boris
name: Schwecke, Torsten
name: Neyazi, Mastura
name: Samperio-Ventayol, Pilar
name: Aguilar, Carmen
name: Schlegel, Nicolas
name: Dökel, Simon
name: Ralser, Markus
name: Hocke, Andreas
name: Krempl, Christine
name: Bartfeld, Sina
Publisher: name: The Francis Crick Institute
Year: 2024
Subjects: classificationCode: Chemical Biology & High Throughput
subject: Chemical Biology & High Throughput
classificationCode: Ecology,Evolution & Ethology
subject: Ecology,Evolution & Ethology
classificationCode: Metabolism
subject: Metabolism
classificationCode: Computational & Systems Biology
subject: Computational & Systems Biology
classificationCode: Synthetic Biology
subject: Synthetic Biology

description: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection primarily affects the lung but can also cause gastrointestinal (GI) symptoms. In vitro experiments confirmed that SARS-CoV-2 robustly infects intestinal epithelium. However, data on infection of adult gastric epithelium are sparse and a side-by-side comparison of the infection in the major segments of the GI tract is lacking. We provide this direct comparison in organoid-derived monolayers and demonstrate that SARS-CoV-2 robustly infects intestinal epithelium, while gastric epithelium is resistant to infection. RNA sequencing and proteome analysis pointed to angiotensin-converting enzyme 2 (ACE2)
as a critical factor, and, indeed, ectopic expression of ACE2 increased susceptibility of gastric organoid-derived monolayers to SARS-CoV-2. ACE2 expression pattern in GI biopsies of patients mirrors SARS-CoV-2 infection levels in monolayers. Thus, local ACE2 expression limits SARS-CoV-2 expression in the GI tract to the intestine, suggesting that the intestine, but not the stomach, is likely to be important in viral replication and possibly transmission.
Transition magnon modes in thin ferromagnetic nanogratings
Creators: name: Kukhtaruk, S. M.
name: Rushforth, A. W.
name: Godejohann, F.
name: Scherbakov, A. V.
name: Bayer, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: Applied Physics (physics.app-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: This work presents micromagnetic simulations in ferromagnetic nanogratings for the full range of directions of an applied in-plane external magnetic field. We focus on the modification of the magnon mode characteristics when the magnetic field orientation is gradually changed between the classical Damon-Eshbach (DE) and backward-volume (BV) geometries. We found that in a specific range of field directions, the magnon mode parameters differ significantly from the parameters in the classical cases, namely, the modes are characterized by complex spatial distributions and have low group velocities. The center of this range corresponds to the direction of the external magnetic field, which gives the maximal nonuniform distribution of the static magnetization in the nanogratings.
description: 20 pages, 15 figures
Updating a diesel engine exhaust job-exposure matrix with published measurement data
Creators: name: Ziembicki, Stephanie
name: Kirkham, Tracy L.
name: Demers, Paul A.
name: Arrandale, Victoria H.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: A job-exposure matrix (JEM) is a tool that can estimate diesel engine exhaust (DEE) exposures. JEMs based on expert judgment or measurement data are limited by the information available at the time of development. Over time, more information about hazardous exposures is understood through additional measurements and peer-reviewed publications. This study presents a systematic approach to updating an existing DEE JEM using published data to better reflect current scientific knowledge. The literature was searched for occupational exposure studies that measured DEE as elemental carbon (EC) between January 2010 and May 2022. Four-digit North American Industry Classification System (NAICS) 2002 and National Occupational Classification-Statistics (NOC-S) 2006 codes were assigned to each identified subgroup within the studies. EC exposures were categorized as low (0–10 µg/m3), moderate (10–20 µg/m3), or high (>20 µg/m3). Weighted arithmetic means were calculated for each industry-occupation intersection (IOI) identified in the literature. These means were used to adjust, or retain, the existing exposure level within the JEM cells using a decision tree based on the number of studies, workplace locations, and pooled sample size of the weighted mean. Concordance was measured between the updated JEM (Diesel Exhaust in Canada JEM (DEC-JEM)), the previous (existing) JEM, and the Canadian Job-Exposure Matrix (CANJEM). Thirty-seven studies were identified from the published literature reporting on 53 unique IOIs (20 NAICS and 34 NOC-S codes), including occupations in the mining, construction, and transportation industries. Exposure levels for 66% of identified IOIs increased, most in construction and mining. After the decision tree’s results were expanded to the full DEC-JEM, the exposure level of 486 IOIs (12.5% of DEC-JEM) and 286,710 workers (15.8% of DEE-exposed workers) increased. There was a significant correlation between qualitative exposure levels in the updated DEC-JEM and CANJEM (Kendall’s τ = 0.364, p < 0.001). This study describes a systematic approach to updating an existing JEM to incorporate new scientific knowledge. The updated DEC-JEM better reflects existing exposure knowledge in several industries, particularly construction. Future analyses include investigating its use as an exposure assessment tool in disease surveillance.
Two robots moving geodesically on a tree
Creators: name: Davis, Donald M.
name: Harrison, Michael
name: Recio-Mitter, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 53C22, 55R80, 55M30, 68T40

description: We study the geodesic complexity of the ordered and unordered configuration spaces of graphs in both the $\ell_1$ and $\ell_2$ metrics. We determine the geodesic complexity of the ordered two-point $\varepsilon$-configuration space of any star graph in both the $\ell_1$ and $\ell_2$ metrics and of the unordered two-point configuration space of any tree in the $\ell_1$ metric, by finding explicit geodesics from any pair to any other pair, and arranging them into a minimal number of continuously-varying families. In each case the geodesic complexity matches the known value of the topological complexity.
description: 20 pages, 17 figures
Anisotropic conformal invariance of lightlike geodesics in pseudo-Finsler manifolds
Creators: name: Javaloyes, Miguel Angel
name: Soares, Bruno Learth
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper, we prove that lightlike geodesics of a pseudo-Finsler manifold and its focal points are preserved up to reparametrization by anisotropic conformal changes, using the Chern connection and the anisotropic calculus and the fact that geodesics are critical points of the energy functional and Jacobi fields, the kernel of its index form. This result has applications to the study of Finsler spacetimes.
description: 12 pages. arXiv admin note: text overlap with arXiv:1401.8149
Anceps pageana
Creators: name: Harzhauser, Mathias
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Archaeogastropoda
Trochidae
Anceps
Anceps pageana

description: Anceps pageana (d’Orbigny, 1844) †
= Trochus macovei Simionescu & Barbu, 1940
? = Trochus tschebricensis var. simplex Uspenski, 1927 (non Defrance, 1828)
? = Trochus tschebricensis var. convexa Uspenski, 1927
= Calliostoma politioanei Jekelius, 1944
Middle Miocene (Sarmatian): Central Paratethys Sea (Romania).
Middle-late Miocene (Bessarabian): Eastern Paratethys Sea (Bulgaria, Romania, Moldova, Ukraine, Russia). (Sladkovskaya 2017)
description: Published as part of Harzhauser, Mathias, 2021, The Cainozoic to present-day record of Circum-Mediterranean, NE Atlantic and North Sea Cantharidinae and Trochinae (Trochoidea, Gastropoda) - a synopsis, pp. 1-81 in Zootaxa 4902 (1) on page 20, DOI: 10.11646/zootaxa.4902.1.1, http://zenodo.org/record/4419088
Offline versus Online Triplet Mining based on Extreme Distances of Histopathology Patches
Creators: name: Sikaroudi, Milad
name: Ghojogh, Benyamin
name: Safarpoor, Amir
name: Karray, Fakhri
name: Crowley, Mark
name: Tizhoosh, H. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We analyze the effect of offline and online triplet mining for colorectal cancer (CRC) histopathology dataset containing 100,000 patches. We consider the extreme, i.e., farthest and nearest patches to a given anchor, both in online and offline mining. While many works focus solely on selecting the triplets online (batch-wise), we also study the effect of extreme distances and neighbor patches before training in an offline fashion. We analyze extreme cases' impacts in terms of embedding distance for offline versus online mining, including easy positive, batch semi-hard, batch hard triplet mining, neighborhood component analysis loss, its proxy version, and distance weighted sampling. We also investigate online approaches based on extreme distance and comprehensively compare offline, and online mining performance based on the data patterns and explain offline mining as a tractable generalization of the online mining with large mini-batch size. As well, we discuss the relations of different colorectal tissue types in terms of extreme distances. We found that offline and online mining approaches have comparable performances for a specific architecture, such as ResNet-18 in this study. Moreover, we found the assorted case, including different extreme distances, is promising, especially in the online approach.
description: Accepted for presentation at the 15th International Symposium on Visual Computing (ISVC) 2020, Springer. v2: corrected a small mathematical typo
Coherence properties of highly-excited motional states of a trapped ion
Creators: name: Jarlaud, Vincent
name: Hrmo, Pavel
name: Joshi, Manoj K.
name: Thompson, Richard C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a study of the coherence properties of a variety of motional states of a single ion confined in a Penning ion trap. We demonstrate that the motion of the ion has a coherence time of the order of one second, using Ramsey interferometry. We introduce a technique for preparing the ion in an incoherent superposition of highly-excited motional states using a simple modification of optical sideband cooling. Coherent manipulation of these states allow measurements of optical and motional coherence to be carried out. We show that these highly-excited motional state superpositions have long coherence times despite the incoherent preparation of the states. Such states can be useful for sensitive motional dephasing measurements.
description: 18 pages, 8 figures
OʼZBEKISTON RESPUBLIKASIDA ROʼYXATDAN OʼTKAZILGAN MAXALLIY VA XORIJIY DORI PREPARATLARI VA ME'YORIY XUJJATLARNING STATISTIK TAHLILI
Creators: name: Danabayev, N.G'.
name: Sarvarova, D.M.
Publisher: name: Zenodo
Year: 2024

description: Respublikada soʼnggi yillarda dori vositalari, tibbiy buyumlar va tibbiy texnika muomalasini takomillashtirish boʼyicha kompleks chora-tadbirlar amalga oshirildi. Shu bilan birga, farmatsevtika sohasini isloh qilish, farmatsevtika mahsulotlari xavfsizligini taʼminlash, ularni davlat roʼyxatdan oʼtkazishni takomillashtirish va dorixonalar faoliyatini tartibga solish talab etilmoqda. Dori moddalari va dori turlarini kimyoviy, fizik, biologik va boshqa usullarda sifat hamda miqdoriy tahlil qilish usullari, zaharli va kuchli taʼsir etadigan dorilar roʻyxati, bolalar va kattalar uchun dorilarning bir ichishlik, shuningdek, kunlik miqdorlari jadvali Farmokopeyalarda yoritiladi.
The Female Emergency Medical Services Experience: A Mixed Methods Study
Creators: name: McCann-Pineo, Molly
name: Keating, Meghan
name: McEvoy, Tara
name: Schwartz, Mikayla
name: Schwartz, Rebecca M.
name: Washko, Jonathan
name: Wuestman, Elizabeth
name: Berkowitz, Jonathan
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: Science Policy
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Mental Health

description: Emergency Medical Services (EMS) is a challenging profession. Little is known if there are gender differences in the experiences among EMS clinicians. Therefore, our aim was to understand and characterize the occupational experiences of female EMS clinicians. A mixed methodological study was conducted among currently licensed female EMS clinicians via focus group and self-report survey data. Three focus groups (n = 5, 4, 13, respectively) were conducted with participants purposively recruited from primarily Northeastern EMS agencies. Through ongoing collaborations, a recruitment advertisement was provided to EMS leadership at respective agencies for distribution among their female staff. Sessions were recorded and transcribed for thematic analysis. A six-phase inductive analytical approach was utilized to evaluate focus group data. Qualitative findings were utilized to inform a cross-sectional, self-report survey consisting of occupational specific experiences, such as harassment and pregnancy, and validated measures of mental wellbeing. Descriptive statistics were used to describe the study sample and female EMS clinician occupational and personal experiences. A total of 22 female EMS clinicians participated across the three focus group sessions. Four major themes were identified: 1) the female EMS experience; 2) impact on personal wellbeing; 3) impact on occupational wellbeing; and 4) coping mechanisms. Each theme had multiple subthemes. There were 161 participants that attempted the 72-item survey, 13 partial and 148 competed surveys. Median age was 32 years (IQR: 25-42), and the majority were EMT-Bs (55.1%). Approximately 70.0% met the criteria for probable anxiety, 53.9% probable depression and 40.9% elevated symptoms of burnout. Almost 73.0% reported workplace harassment, with most experiences being perpetrated by patients and coworkers. Over 61.0% reported reconsideration of their career in EMS. Overall, survey data indicated interactions with peers and leadership, and social support were positive. Findings highlight the need to improve the occupational experiences of female EMS clinicians to preserve and encourage the continuation of their participation in this workforce. Specifically tailored interventions aimed at protecting and improving their overall wellbeing are critical, particularly considering the increased occupational burden resulting from the pandemic. Future research should aim to understand specific predictors of adverse mental health outcomes among this population.
A theoretical analysis of the semileptonic decays $η^{(\prime)}\toπ^0l^+l^-$ and $η^\prime\toηl^+l^-$
Creators: name: Escribano, Rafel
name: Royo, Emilio
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A complete theoretical analysis of the $C$-conserving semileptonic decays $η^{(\prime)}\toπ^0l^+l^-$ and $η^\prime\toηl^+l^-$ ($l=e$ or $μ$) is carried out within the framework of the Vector Meson Dominance (VMD) model. An existing phenomenological model is used to parametrise the VMD coupling constants and the associated numerical values are obtained from an optimisation fit to $V\to Pγ$ and $P\to Vγ$ radiative decays ($V=ρ^0$, $ω$, $ϕ$ and $P=π^0$, $η$, $η^{\prime}$). The decay widths and dilepton energy spectra for the two $η\toπ^0l^+l^-$ processes obtained using this approach are compared and found to be in good agreement with other results available in the published literature. Theoretical predictions for the four $η^{\prime}\toπ^0l^+l^-$ and $η^\prime\toηl^+l^-$ decay widths and dilepton energy spectra are calculated and presented for the first time in this work.
description: 11 pages, 2 figures, 1 table; v2 includes estimated errors coming from the dependence on the model and a detailed explanation of the structure of the $VP\gamma$ vertex; v3 corrects eqs. (6) and (15), includes discussions on the Feynman integral numerical computations and the use of the energy-dependent width for the $\rho$ propagator, as well as corrected numerical results in Table I and Fig. 2
Anceps papilla
Creators: name: Harzhauser, Mathias
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Archaeogastropoda
Trochidae
Anceps
Anceps papilla

description: Anceps papilla (Eichwald, 1850) †
Figs 7C 1 –C 2
= Gibbula papilla mut. pseudopapilla Friedberg, 1928
= Trochus conicus Siminescu & Barbu, 1940 (non Donovan, 1803)
= Trochus subanceps Sinzow, 1897 (pars)
Middle Miocene (Sarmatian): Central Paratethys Sea (Austria).
Middle-late Miocene (Bessarabian): Eastern Paratethys Sea (Romania, Moldova, Ukraine, Russia). (Sladkovskaya 2017)
description: Published as part of Harzhauser, Mathias, 2021, The Cainozoic to present-day record of Circum-Mediterranean, NE Atlantic and North Sea Cantharidinae and Trochinae (Trochoidea, Gastropoda) - a synopsis, pp. 1-81 in Zootaxa 4902 (1) on page 20, DOI: 10.11646/zootaxa.4902.1.1, http://zenodo.org/record/4419088
Non-isomorphic endomorphisms of Fano threefolds
Creators: name: Meng, Sheng
name: Zhang, De-Qi
name: Zhong, Guolei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 14M25, 14E30, 32H50, 20K30, 08A35

description: Let $X$ be a smooth Fano threefold. We show that $X$ admits a non-isomorphic surjective endomorphism if and only if $X$ is either a toric variety or a product of $\mathbb{P}^1$ and a del Pezzo surface; in this case, $X$ is a rational variety. We further show that $X$ admits a polarized (or amplified) endomorphism if and only if $X$ is a toric variety.
description: Minor revision, 34 pages, Mathematische Annalen (to appear)
Neural Codes With Three Maximal Codewords: Convexity and Minimal Embedding Dimension
Creators: name: Johnston, Katherine
name: Shiu, Anne
name: Spinner, Clare
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Neural codes, represented as collections of binary strings called codewords, are used to encode neural activity. A code is called convex if its codewords are represented as an arrangement of convex open sets in Euclidean space. Previous work has focused on addressing the question: how can we tell when a neural code is convex? Giusti and Itskov identified a local obstruction and proved that convex neural codes have no local obstructions. The converse is true for codes on up to four neurons, but false in general. Nevertheless, we prove this converse holds for codes with up to three maximal codewords, and moreover the minimal embedding dimension of such codes is at most two.
description: 8 pages, 6 figures
Combinatorial Ricci flow on compact 3-manifolds with boundary
Creators: name: Xu, Xu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Combinatorial Ricci flow on an ideally triangulated compact 3-manifold with boundary was introduced by Luo as a 3-dimensional analog of Chow-Luo's combinatorial Ricci flow on a triangulated surface and conjectured to find algorithmically the complete hyperbolic metric on the compact 3-manifold with totally geodesic boundary. In this paper, we prove Luo's conjecture affirmatively by extending the combinatorial Ricci flow through the singularities of the flow if the ideally triangulated compact 3-manifold with boundary admits such a metric.
description: 18 pages
Exact Computation of Maximum Rank Correlation Estimator
Creators: name: Shin, Youngki
name: Todorov, Zvezdomir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: In this paper we provide a computation algorithm to get a global solution for the maximum rank correlation estimator using the mixed integer programming (MIP) approach. We construct a new constrained optimization problem by transforming all indicator functions into binary parameters to be estimated and show that it is equivalent to the original problem. We also consider an application of the best subset rank prediction and show that the original optimization problem can be reformulated as MIP. We derive the non-asymptotic bound for the tail probability of the predictive performance measure. We investigate the performance of the MIP algorithm by an empirical example and Monte Carlo simulations.
description: 23 pages, 4 figures, 4 tables
Hemorrhagic Shock in Isolated and Non-Isolated Pelvic Fractures: A Registries-Based Study
Creators: name: Gottfried, Amir
name: Gendler, Sami
name: Chayen, David
name: Radomislensky, Irina
name: Mitchnik, Ilan Y.
name: Epshtein, Elad
name: Tsur, Avishai M.
name: Almog, Ofer
name: Talmy, Tomer
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Pelvic fractures resulting from high-energy trauma can frequently present with life-threatening hemodynamic instability that is associated with high mortality rates. The role of pelvic exsanguination in causing hemorrhagic shock is unclear, as associated injuries frequently accompany pelvic fractures. This study aims to compare the incidence of hemorrhagic shock and in-hospital outcomes in patients with isolated and non-isolated pelvic fractures. Registries-based study of trauma patients hospitalized following pelvic fractures. Data from 1997 to 2021 were cross-referenced between the Israel Defense Forces Trauma Registry (IDF-TR), documenting prehospital care, and Israel National Trauma Registry (INTR) recording hospitalization data. Patients with isolated pelvic fractures were defined as having an Abbreviated Injury Scale (AIS) <3 in other anatomical regions, and compared with patients sustaining pelvic fracture and at least one associated injury (AIS ≥ 3). Signs of profound shock upon emergency department (ED) arrival were defined as either a systolic blood pressure <90 mmHg and/or a heart rate >130 beats per min. Overall, 244 hospitalized trauma patients with pelvic fractures were included, most of whom were males (84.4%) with a median age of 21 years. The most common injury mechanisms were motor vehicle collisions (64.8%), falls from height (13.1%) and gunshot wounds (11.5%). Of these, 68 (27.9%) patients sustained isolated pelvic fractures. In patients with non-isolated fractures, the most common regions with a severe associated injury were the thorax and abdomen. Signs of shock were recorded for 50 (20.5%) patients upon ED arrival, but only four of these had isolated pelvic fractures. In-hospital mortality occurred among 18 (7.4%) patients, all with non-isolated fractures. In young patients with pelvic fractures, severe associated injuries were common, but isolated pelvic fractures rarely presented with profound shock upon arrival. Prehospital management protocols for pelvic fractures should prioritize prompt evacuation and resuscitative measures aimed at addressing associated injuries.