cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High heritability of central corneal thickness : the twins eye studies
Creators: name: Toh, T
Publisher: name: University Of Tasmania
Year: 2023

description: PURPOSE: A classical twin study was performed to determine the heritability of central corneal thickness, an important parameter in glaucoma assessment. METHODS: The concordance of CCT between monozygotic (MZ) and dizygotic (DZ) twins was compared. A total of 256 twin pairs (131 MZ and 125 DZ) were recruited from 3 centers: the Twin Eye Study in Tasmania, the Brisbane Adolescent Twin Study and the Twins UK adult registry held at St. Thomas' Hospital in London. As part of an extensive ophthalmic evaluation, CCT was measured using ultrasound pachymetry. Structural equation modelling using the Mx program was used to determine the heritability of CCT. RESULTS: The mean age of subjects was 38 years (range 8-81). The mean CCT of all eyes examined was 544.5˜í¬¿m (standard deviation [SD] 37.3). The CCT measurements were more highly correlated in MZ twins than in DZ twins, with intraclass correlation coefficients of 0.95 and 0.52, respectively, suggesting a strong genetic influence. A model of additive genetic and unique environmental effects provided the best fit, yielding a heritability of 0.95 (95% Cl 0.93-0.96) with the remaining variation being attributable to unique environmental factors. CONCLUSION: In this study of Australian and United Kingdom twins, we found that genetic factors are of major importance in CCT, with a heritability of 0.95.
Defeating Passive Eavesdropping with Quantum Illumination
Creators: name: Shapiro, Jeffrey H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum illumination permits Alice and Bob to communicate at 50 Mbit/s over 50 km of low-loss fiber with error probability less than 10^(-6) while the optimum passive eavesdropper's error probability must exceed 0.28.
description: 2 pages, 1 figure; new version corrects a significant typographical error
Second World War Memorialisation on my Day Off
Creators: name: Richardson, Ian
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Characteristics of dielectric-loaded coaxial cables.
Creators: name: Lau, Ming Chee
Publisher: name: University of British Columbia
Year: 2011

description: The characteristics of all modes in the dielectric-loaded coaxial cable have been given. Reduction in attenuation by dielectric loading is possible for the dominant mode in these cables, including -cables with optimum-dimensions, if lossless or sufficiently low-loss dielectrics are used. For higher losses in the loading dielectric, higher frequencies are required to achieve attenuation reduction. No significant reduction in conductor losses can be achieved with cables whose dimensions are such that only the dominant mode can be supported. Measurements of the attenuation coefficients of several lower order modes were carried out at S-band frequencies using a resonant cavity. Experimental observations agree favorably with theory for the TM modes.
Writing development of Chinese learners of English : a systemic functional linguistics perspective
Creators: name: Wang, X
Publisher: name: University Of Tasmania
Year: 2023

description: A big challenge facing many Chinese learners of English is how to write texts in English which are structurally complex in terms of syntax and lexical density. Grammar teaching is an important aspect of the English curriculum in Chinese tertiary institutions. However, it is heavily based on traditional grammar which tends to focus on rules and prescriptive patterns. Systemic Functional Linguistics (SFL) theory developed by Halliday and his colleagues introduces four grammatical features which are useful for the teaching of writing: Theme and Rheme, lexical density, nominalisation and grammatical metaphor. They are theoretical concepts which are used to measure linguistic complexity of texts. Developing an awareness of these grammatical features is crucial to Chinese learners of English. This study is an action research which deals with the implementation of Systemic Functional Linguistics in teaching English writing to Chinese students in a Chinese tertiary education context. The study investigates the students' general understanding as well as use of SFL in general and the four grammatical features of SFL in particular. It compares the differences in writing style before and after the students were taught the four grammatical features of SFL and examines their effectiveness in improving the students' writing skills. The study also examines the teachers' views on the teaching of English writing to Chinese students. The results of this study reinforce the view that the teaching of Systemic Functional Linguistics has an important role in promoting linguistic awareness and writing competence in Chinese students.
Branching processes in random environment which extinct at a given moment
Creators: name: Boeinghoff, C.
name: Dyakonova, E. E.
name: Kersting, G.
name: Vatutin, V. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J80 (Primary), 60G50, 60F17 (Secondary)

description: Let ${Z_{n},n\geq 0} $ be a critical branching process in random environment and let $T$ be its moment of extinction. Under the annealed approach we prove, as $n\to \infty ,$ a limit theorem for the number of particles in the process at moment $n$ given $T=n+1$ and a functional limit theorem for the properly scaled process ${Z_{nt},δ\leq t\leq 1-δ} $ given $T=n+1$ and $δ\in (0,1/2)$.
description: 21 pages; submitted to Markov Processes and Related Fields
Synchronized age-related gene expression changes across multiple tissues in human and the link to complex diseases
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Adult
Aged
Aging
Animals
Cluster Analysis
Computational Biology
Female
Gene Expression
Gene Expression Profiling
Gene Expression Regulation
Genetic Association Studies
Humans
Male
Mice
Middle Aged
Molecular Sequence Annotation
Mutation
Organ Specificity
Young Adult

description: Aging is one of the most important biological processes and is a known risk factor for many age-related diseases in human. Studying age-related transcriptomic changes in tissues across the whole body can provide valuable information for a holistic understanding of this fundamental process. In this work, we catalogue age-related gene expression changes in nine tissues from nearly two hundred individuals collected by the Genotype-Tissue Expression (GTEx) project. In general, we find the aging gene expression signatures are very tissue specific. However, enrichment for some well-known aging components such as mitochondria biology is observed in many tissues. Different levels of cross-tissue synchronization of age-related gene expression changes are observed, and some essential tissues (e.g., heart and lung) show much stronger "co-aging" than other tissues based on a principal component analysis. The aging gene signatures and complex disease genes show a complex overlapping pattern and only in some cases, we see that they are significantly overlapped in the tissues affected by the corresponding diseases. In summary, our analyses provide novel insights to the co-regulation of age-related gene expression in multiple tissues; it also presents a tissue-specific view of the link between aging and age-related diseases.
Do worn-in tactical boots affect lower extremity kinematics during running?
Creators: name: Thorsen, Tanner A.
name: Donahue, Paul T.
name: Piland, Scott G.
Publisher: name: Loughborough University
Year: 2024

description: Engineering of Sport 15 - Proceedings from the 15th International Conference on the Engineering of Sport (ISEA 2024)
Footwear is one of the most influential factors for lower extremity non-combative musculoskeletal injuries (MSKIs) in service members and tactical athletes. New boots, without long-term wear history, have been shown to alter lower extremity bioemchanics, thus altering gait patterns demonstrated when wearing typical athletic shoes and increasing risk of injury. The majority of research has been conducted on the effects and implications of brand-new tactical boots on biomechanics of the foot and ankle. These research limitations make the translation of results to tactical athletes currently wearing worn-in boots, or boots that have a long-term wear history, challenging. In recreational running, it has been suggested that shoes should be replaced after 500-700 kilometers of use as the forceattenuating properties of the shoe degrade. Currently, there is no recommendation for the replacement of tactical boots. Unsuprisingly, more contemporary investigations of the force-attenuating properties of worn-in running shoes have demonstrated increased peak plantar pressures compared to brand new running shoes. Thus, the purpose of this study was to compare lower extremity kinematics between worn-in boots and running shoes during running. We hypothesized that participants will demonstrate reduced peak ankle, knee, and hip joint angles in worn-in boots. Primary variables of interest include peak, heel strike and toe-off joint angles in the sagittal and frontal planes.
VNB-1 - Canid
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 9999
Subjects: Canid
Elements
Bison
Horn Core
Vore Buffalo Jump
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Catalog card with the provenience "N1-42" and the notes a list of the elements of a canid and a bison horn core.
Statistical inference for movement behaviour using animal tracking data
Creators: name: Thomson, RB
Publisher: name: University Of Tasmania
Year: 2023

description: Satellite tracking provides an opportunity to learn about how animals choose to move and about the covariates of movement. Quantitative methodology for this problem has lagged behind the remote sensing technology that provides both animal tracks and covariate information. A statistical framework capable of providing appropriate hypothesis testing has to couple very different types of data: highly autocorrelated time series of observed locations (the track), with 2-dimensional maps of \ covariate data. In addition animals respond to internal motivations representable only as theorised motivations. Behaviour is likely to be highly complex and to be only approximately understood so that process error cannot be ignored. Observation error should be accounted for separately from process error because longitude is typically more difficult to estimate than latitude and because estimates of observation error are sometimes available. State space models account separately for observation and process errors and model the serial correlation inherent in tracks. State space models offer great flexibility nevertheless the means of incorporating diverse movement behaviours and covariate information is not immediately clear. Traditionally these models require that time series be equally spaced in time (seldom the case with observed tracks) and they have presented substantial difficulties in inference. This thesis presents a flexible Bayesian state space modelling framework suitable for application to tracks. Movement behaviour is incorporated through advection fields that represent movement hypotheses. These are calculated using theories regarding movement behaviour possibly coupled with covariate information. The deviance information criterion DIC measures the weight given by observed track data to alternative proposed hypotheses regarding movement behaviour. In simulation DIC successfully discriminated the advection fields and therefore the movement hypotheses used to simulate track data. DIC is less sensitive than the Bayes factor is to the priors an advantage in a fielq in which little prior information is available. Markov chain Monte Carlo sampling successfully facilitated nonlinear non-Gaussian model forms while avoiding the inference problems encountered by practitioners of sequential importance sampling. Latent locations are estimated allowing realistic nonlinear path estimation. Inertia a tendency for directional persistence is incorporated. The Bayesian approach allows the incorporation of prior information and eases inference. Temporal shifts in behaviour are also modelled. The method is demonstrated in practice using satellite tracks from white sharks in Australia. The problem of modelled animals becoming trapped in semi-enclosed areas and stepping across narrow barriers is discussed and a proposed solution using Laplace's equation to provide advective flow around obstacles is demonstrated."
Somerset Finds Liaison Officer, hometime
Creators: name: Burnett, Laura
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Testing Mass Loss in Large Magellanic Cloud Cepheids using Infrared and Optical Observations
Creators: name: Neilson, Hilding R.
name: Ngeow, Chow-Choong
name: Kanbur, Shashi M.
name: Lester, John B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been claimed that Period-Luminosity relations derived from infrared observations of Large Magellanic Cloud (LMC) Cepheids are less dependent on the metallicity of the Cepheids. In this work, infrared observations of LMC Cepheids from the SAGE survey are combined with OGLE II optical observation to model and predict mass-loss rates. The mass-loss rates are fit to the data and are predicted to range from about 10^{-12} to 10^{-7}M_\odot/yr; however, the rates depend on the assumed value of the dust-to-gas ratio. By comparing the relations derived from observations to the relations derived from predicted infrared stellar luminosities from the mass-loss model, it is shown mass loss affects the structure and scatter of the infrared Period-Luminosity relation. Mass loss produces shallower slopes of the infrared relations and a lower zero point. There is also evidence for non-linearity in the predicted Period-Luminosity relations, and it is argued that mass loss produces larger infrared excess at lower periods, which affects the slope and zero point, making the PL relations more linear in the wavelength range of 3.6 to 5.8 micron. Because the dust-to-gas ratio is metallicity dependent and mass loss may have a metallicity dependence, infrared Period-Luminosity relations have additional uncertainty due to metallicity.
description: 11 pages, 10 figures, 1 table. ApJ Accepted
title: Дидактические материалы по латинскому языку для студентов-медиков
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В практикуме представлены материалы для проверочных работ по дисциплине «Латинский язык». Задания сгруппированы в разделы в соответствии с модулями курса: «Анатомическая терминология», «Клиническая терминология», «Рецептура». Подготовлен в соответствии с Федеральным государственным образовательным стандартом высшего образования. Предназначен для студентов, обучающихся по специальностям 31.05.01 «Лечебное дело», 31.05.02 «Педиатрия», 31.05.03 «Стоматология».
Burst of Creativity
Creators: name: Henson, Don
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Estimation of ground reaction forces and ankle moment with multiple, low-cost sensors
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Locomotion
Gait
Biomechanical analysis
Plantar pressure insole
Ground contact
Sensor fusion

description: © 2015 Jacobs and Ferris. Background: Wearable sensor systems can provide data for at-home gait analyses and input to controllers for rehabilitation devices but they often have reduced estimation accuracy compared to laboratory systems. The goal of this study is to evaluate a portable, low-cost system for measuring ground reaction forces and ankle joint torques in treadmill walking and calf raises. Methods: To estimate the ground reaction forces and ankle joint torques, we developed a custom instrumented insole and a tissue force sensor. Six healthy subjects completed a collection of movements (calf raises, 1.0 m/s walking, and 1.5 m/s walking) on two separate days. We trained artificial neural networks on the study data and compared the estimates to a multi-camera motion system and an instrumented treadmill. We evaluated the relative strength of each sensor by testing each sensor's ability to predict the ankle joint torque calculated from a reference inverse kinematics algorithm. We assessed model accuracy through root mean squared error and normalized root mean square error. We hypothesized that the estimation of the models would have normalized root mean square error measures less than 10 %. Results: For walking at 1.0 and walking at 1.5 m/s, the single-task, intra-day and multi-task, intra-day predictions had normalized root mean square error less than 10 % for all three force components and both center of pressure components. For the calf raise task, the single-task, intra-day and multi-task, intra-day predictions had normalized root mean square error less than 10 % for only the anterior-posterior center of pressure. The multi-task, intra-day model had similar predictions to the single-task, intra-day model. The normalized root mean square error of predictions from the insole sensor alone were less than 10 % for walking at 1.0 m/s and 1.5 m/s. No sensor was sufficient for the calf raise task. The combination of the insole sensor and the tendon sensor had lower normalized root mean square error than the individual sensors for all three tasks. Conclusions: The proposed sensor system provided accurate estimates for five of the six components of the ground reaction kinetics during walking at 1.0 and 1.5 m/s and one of the six components during the calf raise task. The normalized root mean square error of the predictions of the ground reaction forces were similar to published studies using commercial devices. The proposed system of low-cost sensors can provide useful estimations of ankle joint torque for both walking and calf raises for future studies in mobile gait analysis.
Superconducting and magnetic properties of a new EuAsFeO0.85F0.15 superconductor
Creators: name: Dmitriev, V. M.
name: Kostyleva, I. E.
name: Khlybov, E. P.
name: Zaleski, A. J.
name: Terekhov, A. V.
name: Rybaltchenko, L. F.
name: Khristenko, E. V.
name: Ishchenko, L. A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Polycrystalline samples of a new superconducting EuAsFeO0.85F0.15 compound with critical temperature Tc=11K were prepared by solid state synthesis. Its electric and magnetic properties have been investigated in magnetic fields from 0.1 to 140000 Oe. Critical magnetic fields Hc1, and Hc2 were measured and hence the magnetic penetration depths and the coherence length have been estimated. The temperature dependence Hc2 (T) exhibits clear hyperbolic - type behavior starting with the lowest fields. The data derived were used to estimate probable high Tc and Hc2 in compounds doped with rare-earths having small atomic radii.
description: 12 pages, 10 figures, 13 references
A Day of Archaeologists
Creators: name: Dufton, Andrew
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
title: Латинский язык и основы медицинской терминологии = The Latin Language and Fundamentals of Medical Terminology
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: Учебное пособие по латинскому языку и основам медицинской терминологии содержит теоретические сведения и практические задания по трём модулям: анатомической, клинической и фармацевтической терминологии. Каждый из разделов заканчивается англо-латинским и латинско-английским словарями, а также примерами контрольных работ и QR-кодами для прохождения примерных тестов. Подготовлено в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования, предъявляемыми к изучению дисциплины «Латинский язык». Предназначено для иностранных студентов 1-го курса билингвального отделения (English Media) медицинских вузов.
The effect of local variation in malaria transmission on the prevalence of sulfadoxine-pyrimethamine resistant haplotypes and selective sweep characteristics in Malawi
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Malaria
Sulfadoxine-pyrimethamine
Resistance
Selective sweeps
Dihydrofolate reductase (DHFR) and dihydropteroate synthase (DHPS)

description: © 2015 Artimovich et al. Background: Persistence of sulfadoxine-pyrimethamine (SP) resistance has been described in an urban setting in Malawi where malaria transmission is relatively low. Higher malaria transmission is associated with greater genetic diversity and more frequent genetic recombination, which could lead to a more rapid re-emergence of SP-sensitive parasites, as well as more rapid degradation of selective sweeps. In this study, the impact of local variation in malaria transmission on the prevalence of SP-resistant haplotypes and selective sweep characteristics was investigated at an urban site with low parasite prevalence and two rural sites with moderate and high parasite prevalence. Methods: Samples from three sites with different parasite prevalence were genotyped for resistance markers within pfdhfr-ts and pfdhps and at microsatellites flanking these genes. Expected heterozygosity (He) was estimated to evaluate genetic diversity. Results: No difference in the prevalence of highly resistant DHFR 51I/59R/108N and DHPS 437G/540E was found between sites. Small differences in He flanking pfdhfr-ts and pfdhps were seen between rural-moderate and the other sites, as well as some shared haplotypes between the rural-high and urban-low sites. Conclusions: The results do not show an effect of local variation in malaria transmission, as inferred from parasite prevalence, on SP-resistant haplotype prevalence.
https://twitter.com/FPANNorthwest; https://www.facebook.com/FPANnorthwest; http://flpublicarchaeology.org/
Creators: name: Fetherston, Andrew
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
An Exciting End to the Day
Creators: name: Dagg, Cathy
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Stability and Hopf bifurcation in a mathematical model of pluripotent stem cell dynamics
Creators: name: Adimy, Mostafa
name: Crauste, Fabien
name: Ruan, Shigui
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: Cell Behavior (q-bio.CB)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: We study a mathematical model describing the dynamics of a pluripotent stem cell population involved in the blood production process in the bone marrow. This model is a differential equation with a time delay. The delay describes the cell cycle duration and is uniformly distributed on an interval. We obtain stability conditions independent of the delay. We also show that the distributed delay can destabilize the entire system. In particularly, it is shown that Hopf bifurcations can occur.
title: Exploring the surface of Titan
Creators: name: Lorenz, R. D.
Publisher: name: University of Kent
Year: 2021

description: The exploration of Saturn's giant satellite Titan is considered, with particular reference to its surface which is hidden beneath a thick atmosphere. Groundbased observations, in which great progress has been made recently, and the measurements made by the Pioneer and Voyager spacecraft, are reviewed. Concepts for spacecraft to perform in-situ measurements on Titan are reviewed, as is the development of the NASA/ESA Cassini mission, how the mission constrains scientific investigations, and in turn how the mission has been constrained by funding pressures. The capabilities of the Cassini payload for investigating Titan's surface are critically assessed, and the ability of the Surface Science Package (SSP) on the Huygens probe to determine the composition of surface liquids is examined. Some thoughts on payload selection and the value of individual measurements are presented. The development of an impact penetrometer, and the interpretation of penetrometer and accelerometer data to measure surface mechanical properties, is described. It should be noted that Huygens is not a vehicle expressly designed as a lander, so the impact dynamics are complex. Additionally, the examination of the prospects offered by acoustic instrumentation are investigated. Modelling of a number of Titan surface processes is presented, including rainfall, photochemical and meteoric deposition, tidal dissipation in the interior, regolith processes such as volatile heat transport, annealing and aeolian transportation and the effects of tidal and crustal processes on lakes. A key subtopic of the thesis addresses the theme of planetary exploration as a whole, with the interaction between and the limitations of the exploration 'triad' of observations, insitu measurements and theory. Note is made of the remarkably significant role played by individuals and their perceptions.
Cosmic Analogues of the Stern-Gerlach Experiment and the Detection of Light Bosons
Creators: name: Chelouche, Doron
name: Guendelman, Eduardo I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that, by studying the arrival times of radio pulses from highly-magnetized pulsars, it may be possible to detect light spin-0 bosons (such as axions and axion-like particles) with a much greater sensitivity, over a broad particle mass range than is currently reachable by terrestrial experiments and indirect astrophysical bounds. In particular, we study the effect of splitting of photon-boson beams under intense magnetic field gradients in magnetars and show that radio pulses (at meter wavelengths) may be split and shift by a discernible phase down to a photon-boson coupling constant of g ~ 1e-14 [1/GeV]; i.e., about four orders of magnitude lower than current upper limits on g. The effect increases linearly with photon wavelength with split pulses having equal fluxes and similar polarizations. These properties make the identification of beam-splitting and beam deflection effects straightforward with currently available data. Better understanding of radio emission from magnetars is, however, required to confidently exclude regions in the parameter space when such effects are not observed.
description: 4 pages, 3 figures
KombiFiD - Kombinierte Firmendaten für Deutschland
Creators: name: Bender, Stefan
name: Wagner, Joachim
name: Zwick, Markus
Publisher: name: Medien- und Informationszentrum, Leuphana Universität Lüneburg
Year: 2007
Subjects: subject: Daten
subject: Datenerhebung
subject: Betriebsdaten
classificationCode: 330
subject: 330 Wirtschaft

description: Bei den Statistischen Ämtern des Bundes und der Länder und im Institut für Arbeitsmarkt- und Berufsforschung der Bundesagentur für Arbeit werden zahlreiche Daten für Unternehmen bzw. Betriebe gesammelt und aufbereitet. Durch das Unternehmensregister ist bei den Statistischen Ämtern eine "Masterdatei" entstanden, die es technisch möglich macht, Unternehmensdaten aus den Beständen der genannten und weiteren Institutionen zusammenzuführen. Das Projekt KombiFiD – Kombinierte Firmendaten für Deutschland soll zeigen, dass ausgewählte Datenbestände tatsächlich über die Grenzen der jeweiligen Datenproduzenten zusammengeführt und der Wissenschaft zur Verfügung gestellt werden können, und es soll gleichzeitig demonstrieren, dass das Analysepotenzial dieser kombinierten Datensätze sehr viel höher ist als das der einzelnen Bestandteile. Der vorliegende Beitrag stellt die Konzeption dieses Projekts und das geplante Vorgehen vor.
Comparative analysis of cell-associated HIV DNA levels in cerebrospinal fluid and peripheral blood by droplet digital PCR
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: Anti-HIV Agents
Antiretroviral Therapy, Highly Active
CD4-Positive T-Lymphocytes
Cerebrospinal Fluid
DNA, Viral
HIV Infections
HIV-1
Humans
Leukocytes, Mononuclear
Organ Specificity
Polymerase Chain Reaction
RNA, Viral
Retrospective Studies
Viral Load
Viremia
Virus Replication

description: Background Measurement of HIV DNA-bearing cells in cerebrospinal fluid (CSF) is challenging because few cells are present. We present a novel application of the sensitive droplet digital (dd) PCR in this context. Methods We analyzed CSF cell pellets and paired peripheral blood mononuclear cells (PBMC) from 28 subjects, 19 of whom had undetectable HIV RNA (<48 copies/mL) in both compartments. We extracted DNA from PBMC using silica-based columns and used direct lysis on CSF cells. HIV DNA and the host housekeeping gene (RPP30) were measured in CSF and PBMC by (dd)PCR. We compared HIV DNA levels in virally-suppressed and-unsuppressed subgroups and calculated correlations between HIV DNA and RNA levels in both compartments using non-parametric tests. Results HIV DNA was detected in 18/28 (64%) CSF cell pellets, including 10/19 (53%) samples with undetectable HIV RNA. HIV DNA levels in CSF cell pellets were not correlated with RPP30 (p = 0.3), but correlated positively with HIV RNA in CSF (p = 0.04) and HIV DNA in PBMC (p = 0.03). Cellular HIV DNA in CSF was detected in comparable levels in HIV RNA-suppressed and unsuppressed subjects (p = 0.14). In contrast, HIV DNA levels in PBMC were significantly lower in HIV RNA-suppressed than in unsuppressed subjects (p = 0.014). Among subjects with detectable HIV DNA in both compartments, HIV DNA levels in CSF were significantly higher than in PBMC (p<0.001). Conclusions Despite low mononuclear cell numbers in CSF, HIV DNA was detected in most virally suppressed individuals. In contrast to PBMC, suppressive ART was not associated with lower HIV DNA levels in CSF cells, compared to no ART, perhaps due to poorer ART penetration, slower decay of HIV DNA, or enrichment of HIV DNA-bearing mononuclear cells into the CSF, compared to blood. Future studies should determine what fraction of HIV DNA is replication- competent in CSF leukocytes, compared to PBMC.
Behind the scenes at Current Publishing
Creators: name: Hilts, Carly
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Role of the microvasculature in the development of muscle insulin resistance
Creators: name: St-Pierre, P
Publisher: name: University Of Tasmania
Year: 2023

description: Type 2 diabetes is a disease characterised by a decrease in the sensitivity to insulin. Recently evidence has suggested an involvement of the microvasculature in the development of type 2 diabetes. Microvascular perfusion is increased by insulin and impairment of this response may contribute to muscle insulin resistance by limiting insulin and glucose delivery to skeletal muscle myocytes. This thesis focuses on the involvement of the microvascular perfusion in the development of insulin resistance. Two different models were used to assess the impact of the microvascular perfusion on the insulin-mediated glucose disposal. Firstly, 4 weeks of high-fat diet (HFD model) feeding to rats was used as a pre-diabetic model of insulin resistance. Secondly, partial blockage of skeletal muscle microvascular beds with 15 ˜í¬¿m diameter latex microspheres (MS model) was used to assess the effect of decreased muscle microvascular perfusion on insulin sensitivity. In each model, insulin sensitivity was determined during hyperinsulinaemic isoglycaemic clamps in anaesthetized rats. Femoral arterial blood flow (FBF) and microvascular perfusion (assessed by the hindleg metabolism of infused 1-methylxanthine) were measured. Hindleg glucose uptake was determined from arteriovenous difference and FBF and muscle glucose uptake from [\\(^{14}\\)C]-2-deoxyglucose uptake. Insulin-mediated increases in femoral blood flow and glucose uptake were blunted in the HFD rats compared to those on the normal diet, while insulininduced microvascular perfusion was completely abolished. To see whether contraction responses were intact on the HFD, the functional response to electrical stimulation in the HFD rats was explored. The contraction-mediated increase in microvascular perfusion and glucose uptake was unaffected by the HFD. In the MS model, microsphere occlusion of hindleg muscle microvasculature diminished microvascular perfusion as well as insulin-mediated glucose uptake, thus causing a vascular-derived acute state of insulin resistance. Next, the long-term effect of microsphere occlusion was assessed. Surprisingly, insulin responses following chronic microsphere occlusion were restored by 2 weeks of recovery post-injection. This may be explained by a rapid angiogenic response in occluded muscle vasculature. Collectively, this thesis demonstrates two key findings that highlight the potential role of the microvasculature in the development of skeletal muscle insulin resistance: (i) that insulin- but not contraction-mediated microvascular responses are impaired in a pre-diabetic model of insulin resistance, and (ii) that acute physical reduction of microvascular flow impairs muscle insulin sensitivity. This furthers our understanding of the aetiology of type 2 diabetes and emphasizes the microvasculature as an interesting therapeutic target for the management of type 2 diabetes.
Predictions of Quark-Gluon String Model for pp at LHC
Creators: name: Kaidalov, A. B.
name: Poghosyan, M. G.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Soft multiparticle production processes in hadronic collisions are considered in the framework of the Quark-Gluon Strings Model and the model predictions are compared with data from SppS and Tevatron. Predictions for LHC energies are given.
description: Adding predictions for full PS
Is the Market Classification of Risk Always Efficient? - Evidence from German Third Party Motor Insurance
Creators: name: Wein, Thomas
name: Schwarze, Reimund
Publisher: name: Medien- und Informationszentrum, Leuphana Universität Lüneburg
Year: 2005
Subjects: subject: Versicherung
subject: Kraftfahrzeug
subject: Risikoanalyse
classificationCode: 330
subject: 330 Wirtschaft

description: This paper studies the empirical effect of risk classification in the mandatory third-party motor insurance (TPMI) of Germany. We find evidence that inefficient risk categories had been selected in this market while potentially efficient information may have been dismissed. Risk classification did generally not improve the efficiency of contracting or the composition of insureds in this market. These findings can be partly explained by the existence of compulsory fixed coverage and other institutional restraints such as unitary owner insurance in this market.
On the stability of a maturity structured model of cellular proliferation
Creators: name: Adimy, Mostafa
name: Crauste, Fabien
name: Pujo-Menjouet, Laurent
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: Cell Behavior (q-bio.CB)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: We analyse the asymptotic behaviour of a nonlinear mathematical model of cellular proliferation which describes the production of blood cells in the bone marrow. This model takes the form of a system of two maturity structured partial differential equations, with a retardation of the maturation variable and a time delay depending on this maturity. We show that the stability of this system depends strongly on the behaviour of the immature cells population. We obtain conditions for the global stability and the instability of the trivial solution.
The functions of nonsuicidal self-injury: Converging evidence for a two-factor structure
Creators: name: (:Unkn) Unknown
Publisher: name: My University
Year: 2015
Subjects: 1117 Public Health and Health Services
Population & Society
Injury (total) Accidents/Adverse Effects
Behavioral and Social Science

description: © 2015 Klonsky et al. Research has identified more than a dozen functions of non-suicidal self-injury (NSI), but the conceptual and empirical overlap among these functions remains unclear. The present study examined the structure of NSI functions in two large samples of patients receiving acute-care treatment for NSI. Two different measures of NSI functions were utilized to maximize generalizability of findings: one sample (n = 946) was administered the Inventory of Statements About Self-injury (ISAS; Klonsky and Glenn in J Psychopathol Behav Assess 31:215-219, 2009), and a second sample (n = 211) was administered the Functional Assessment of Self-Mutilation (FASM; Lloyd et al. in Self-mutilation in a community sample of adolescents: descriptive characteristics and provisional prevalence rates. Poster session at the annual meeting of the Society for Behavioral Medicine, New Orleans, LA, 1997). Exploratory factor analyses revealed that both measures exhibited a robust two-factor structure: one factor represented Intrapersonal functions, such as affect regulation and anti-dissociation, and a second factor represented Social functions, such as interpersonal influence and peer bonding. In support of the two-factor structure's construct validity, the factors exhibited a pattern of correlations with indicators of NSI severity that was consistent with past research and theory. Findings have important implications for theory, research, and treatment. In particular, the two-factor framework should guide clinical assessment, as well as future research on the implications of NSI functions for course, prognosis, treatment, and suicide risk.
Human Remain Detection Dogs Help Archaeologists Find Unmarked Graves
Creators: name: Hinesbuwf
Publisher: name: Archaeology Data Service
Year: 2012

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.