cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modeling the dynamics of biomarkers during primary HIV infection taking into account the uncertainty of infection date
Creators: name: Drylewicz, J.
name: Guedj, J.
name: Commenges, D.
name: Thiébaut, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: During primary HIV infection, the kinetics of plasma virus concentrations and CD4+ cell counts is very complex. Parametric and nonparametric models have been suggested for fitting repeated measurements of these markers. Alternatively, mechanistic approaches based on ordinary differential equations have also been proposed. These latter models are constructed according to biological knowledge and take into account the complex nonlinear interactions between viruses and cells. However, estimating the parameters of these models is difficult. A main difficulty in the context of primary HIV infection is that the date of infection is generally unknown. For some patients, the date of last negative HIV test is available in addition to the date of first positive HIV test (seroconverters). In this paper we propose a likelihood-based method for estimating the parameters of dynamical models using a population approach and taking into account the uncertainty of the infection date. We applied this method to a sample of 761 HIV-infected patients from the Concerted Action on SeroConversion to AIDS and Death in Europe (CASCADE).
description: Published in at http://dx.doi.org/10.1214/10-AOAS364 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: Radiomics of CE-MDCT in evaluating the results of neoadjuvant treatment of pancreatic ductal adenocarcinoma
Creators: name: Tikhonova, Valeriya
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: CT
subject: Chemotherapy
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Neoadjuvant chemotherapy (NAC) in the treatment of pancreatic ductal adenocarcinoma (PDAC) has proven to be effective in improving the survival of this group of patients. Additional difficulties arise for radiologists in assessing PDAC after NFC...
Universality in the run-up of shock waves to the surface of a star
Creators: name: Gundlach, Carsten
name: Leveque, Randall J
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the run-up of a shock wave from inside to the surface of a perfect fluid star in equilibrium and bounded by vacuum. Near the surface we approximate the fluid motion as plane-symmetric and the gravitational field as constant. We consider the "hot" equation of state $P=(Γ-1)ρe$ and its "cold" (fixed entropy, barotropic) form $P=K_0ρ^Γ$ (the latter does not allow for shock heating). We find numerically that the evolution of generic initial data approaches universal similarity solutions sufficiently near the surface, and we construct these similarity solutions explicitly. The two equations of state show very different behaviour, because shock heating becomes the dominant effect when it is allowed. In the barotropic case, the fluid velocity behind the shock approaches a constant value, while the density behind the shock approaches a power law in space, as the shock approaches the surface. In the hot case with shock heating,the density jumps by a constant factor through the shock, while the sound speed and fluid velocity behind the shock diverge in a whiplash effect. We tabulate the similarity exponents as a function of the equation of state parameter $Γ$and the stratification index $n_*$.
description: Version accepted for publication in J. Fluid Mech
Magnetic neutrino scattering on atomic electrons revisited
Creators: name: Kouzakov, Konstantin A.
name: Studenikin, Alexander I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We reexamine the role of electron binding effects in the inelastic neutrino-atom scattering induced by the neutrino magnetic moment. The differential cross section of the process is presented as a sum of the longitudinal and transverse components, according to whether the force that the neutrino magnetic moment exerts on electrons is parallel or perpendicular to momentum transfer. The atomic electrons are treated nonrelativistically. On this basis, the recent theoretical predictions concerning the magnetic neutrino-impact ionization of atoms are critically discussed. Numerical calculations are performed for ionization of a hydrogenlike Ge$^{+31}$ ion by neutrino impact.
description: 13 pages, 2 figures. The revised version is due to comments from Mikhail Voloshin
Exploration of pre-surgical risk assessment tools to identify pressure injury risk in cardiac surgical patients
Creators: name: Turnbull, Pamela
Publisher: name: University of British Columbia
Year: 2019

description: Background: Cardiac surgical patients are at high risk for developing pressure injuries during their perioperative experience. These injuries may have significant impacts on morbidity, mortality, quality of life and health care system costs. One strategy to prevent pressure injuries is to identify high-risk patients prior to surgery that would allow for the implementation of prevention strategies. The majority of risk assessment tools in use today were developed in acute and long-term care settings and have been found ineffective in surgical populations. New pre-operative tools that are specific to surgical patients are now available. Purpose: The aim of this research study was to explore the relative predictive capabilities of the three risk assessment tools. Methods: This pilot study involved a retrospective chart review conducted at St. Paul’s Hospital in Vancouver, British Columbia. Three risk assessment tools were retrospectively applied in a two arm comparison, to two groups of cardiac surgical patients where one group developed pressure injuries and the other had not. Descriptive statistics and logistic regression were then applied to analyse the data. Findings: Insufficient cases were available to meet the inclusion criteria for the pressure injury arm therefore the focus of the study changed to a pilot study to test the methodology alone. A group of 13 cases were identified (that closely resembled the inclusion criteria) and were used to the pressure injury study arm. A group of 24 cases were identified in the control arm (non-pressure injury) that met the inclusion criteria. The study found that although the Braden Scale Score could statistically predict a pressure injury (p-value 0.04), when compared with the two other scales there was no statistically significant difference in predictive ability. Implications: These results cannot be used to inform clinical practice due to limitations but testing the methodology may help inform future research. Recommendations for future research include diversification of the study sample across multiple sites. Alternatively, if possible performing prospective data collection would help ensure consistency in assessment and data collection, and help in standardizing the pressure injury prevention strategies to compensate for a confounding variable (nursing clinical judgement).
title: Perineural tumour spread in head and neck malignancy assessment on PET-CT
Creators: name:  Kaneria, Nirav
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Ear / Nose / Throat
subject: Head and neck
subject: Nuclear medicine
subject: MR
subject: PET-CT
subject: Diagnostic procedure
subject: Cancer

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Understand principles of perineural spread and its importance in head and neck malignancy. Highlight common spread pathways. Demonstrate examples of perineural spread on...
title: Практикум по физической культуре и спорту. Общая физическая подготовка в процессе самостоятельных занятий студентов
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2020

description: В учебном пособии рассматриваются методические приемы и средства общей физической подготовки в процессе самостоятельных занятий студентов, позволяющие успешно выполнять нормативы ВФСК ГТО. Предназначено для студентов всех специальностей и форм обучения.
Bayesian evidence for two companions orbiting HIP 5158
Creators: name: Feroz, F.
name: Balan, S. T.
name: Hobson, M. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present results of a Bayesian analysis of radial velocity (RV) data for the star HIP 5158, confirming the presence of two companions and also constraining their orbital parameters. Assuming Keplerian orbits, the two-companion model is found to be e^{48} times more probable than the one-planet model, although the orbital parameters of the second companion are only weakly constrained. The derived orbital periods are 345.6 +/- 2.0 d and 9017.8 +/- 3180.7 d respectively, and the corresponding eccentricities are 0.54 +/- 0.04 and 0.14 +/- 0.10. The limits on planetary mass (m \sin i) and semimajor axis are (1.44 +/- 0.14 M_{J}, 0.89 +/- 0.01 AU) and (15.04 +/- 10.55 M_{J}, 7.70 +/- 1.88 AU) respectively. Owing to large uncertainty on the mass of the second companion, we are unable to determine whether it is a planet or a brown dwarf. The remaining `noise' (stellar jitter) unaccounted for by the model is 2.28 +/- 0.31 m/s. We also analysed a three-companion model, but found it to be e^{8} times less probable than the two-companion model.
description: 5 pages, 4 figures, 3 tables. Added a couple of figures showing the residuals after one and two companion fits. Accepted for publication in MNRAS Letters
On Theta-palindromic Richness
Creators: name: Starosta, Stepan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 68R15

description: In this paper we study generalization of the reversal mapping realized by an arbitrary involutory antimorphism $Θ$. It generalizes the notion of a palindrome into a $Θ$-palindrome -- a word invariant under $Θ$. For languages closed under $Θ$ we give the relation between $Θ$-palindromic complexity and factor complexity. We generalize the notion of richness to $Θ$-richness and we prove analogous characterizations of words that are $Θ$-rich, especially in the case of set of factors invariant under $Θ$. A criterion for $Θ$-richness of $Θ$-episturmian words is given together with other examples of $Θ$-rich words.
description: 14 pages
A dual-band 0.5V low-power quadrature LC-VCO using coupling current reuse technique
Creators: name: Yu, Meiqi
Publisher: name: University of British Columbia
Year: 2019

description: Quadrature voltage-controlled oscillators (QVCOs) are widely used in radio-frequency integrated circuit transceiver architectures. Different wireless communication systems call for different specifications, in particular, in terms of power consumption. For example, for the emerging Internet-of-Things (IoT) applications, all system blocks including the QVCO should operate from a low voltage supply and have a low power consumption. This is in part due to the size and energy resource limitations of the IoT nodes. This thesis presents the design and successful validation of an ultra-low-power QVCO which can operate in both 2.4 GHz and 5 GHz bands which are two of the popular unlicensed industrial, scientific, and medical (ISM) bands. A proof-of-concept prototype of the proposed structure has been designed and fabricated in a 65-nm CMOS process. When operating from 2.35 to 2.51 GHz (tuning voltage from 0 to 1 V), it consumes 0.58 mW from a 0.5-V supply, with a phase noise of -110.10 dBc/Hz at 1 MHz offset and a figure of merit (FOM) of -184.01 dBc/Hz. When operating from 4.81 to 5.26 GHz, again from a 0.5-V supply, the power consumption is 0.247 mW, with a phase noise of -105.10 dBc/Hz at 1-MHz offset and a FOM of -188.25 dBc/Hz. The measured performance of the prototype is compared favorably with that of the state-of-the-art designs.
title: Cascaded Deep Network Pipeline for automated measurement of midline shift in unenhanced cranial computed tomography: Performance Testing
Creators: name: Gruschwitz, Philipp
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: CNS
subject: Emergency
subject: CT
subject: Image manipulation / Reconstruction
subject: Computer Applications-Detection, diagnosis
subject: Ischaemia / Infarction
subject: Oedema
subject: Trauma

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Intracranial hemorrhage as well as edema resulting in a midline shift and subsequent potentially herniation increases the morbidity and mortality of the affected patients [1]. Aim of this study was to evaluate the performance of a Cascaded Deep...
title: State-of-the-Art of CT Myocardial Stress Dynamic Perfusion
Creators: name: Senatieri, Alberto
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Cardiac
subject: CAD
subject: CT-Angiography
subject: Image manipulation / Reconstruction
subject: CAD
subject: Computer Applications-Detection, diagnosis
subject: Haemodynamics / Flow dynamics
subject: Ischaemia / Infarction

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To illustrate the state-of-the-art of the CT Myocardial Stress Dynamic Perfusion (dCTP) for the functional evaluation of coronary stenosis of uncertain hemodynamic...
Critical behavior of the contact process in a multiscale network
Creators: name: Ferreira, Silvio C.
name: Martins, Marcelo M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Inspired by dengue and yellow fever epidemics, we investigated the contact process (CP) in a multiscale network constituted by one-dimensional chains connected through a Barabási-Albert scale-free network. In addition to the CP dynamics inside the chains, the exchange of individuals between connected chains (travels) occurs at a constant rate. A finite epidemic threshold and an epidemic mean lifetime diverging exponentially in the subcritical phase, concomitantly with a power law divergence of the outbreak's duration, were found. A generalized scaling function involving both regular and SF components was proposed for the quasistationary analysis and the associated critical exponents determined, demonstrating that the CP on this hybrid network and nonvanishing travel rates establishes a new universality class.
title: Проектирование брендинговых кампаний
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2020

description: В учебном пособии рассмотрены основные понятия брендинга и основные инструменты разработки и коммуникационных подходов в реализации брендинговых кампаний. В числе теоретических вопросов рассмотрены основные понятия брендинга (в том числе торговая марка и бренд как комплекс марочных ассоциаций), позиционирование торговой марки, методы и модели разработки бренда. В числе прикладных вопросов рассмотрены коммуникационные основы брендинга (в том числе коммуникационная стратегия брендинговой кампании), особенности вывода торговой марки на рынок, особенности текущего продвижения торговой марки (бренда). Учебное пособие может быть использовано при изучении курсов «Инновационный брендинг», «Брендинг территорий», «Международный брендинг», «Социальный брендинг», «Политический брендинг». Предназначено для студентов, магистрантов, аспирантов, преподавателей, интересующихся вопросами маркетинга, брендинга, связей с общественностью и рекламы.
Signatures of Wigner molecule formation in interacting Dirac fermion quantum dots
Creators: name: Paananen, Tomi
name: Egger, Reinhold
name: Siedentop, Heinz
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study $N$ interacting massless Dirac fermions confined in a two-dimensional quantum dot. Physical realizations of this problem include a graphene monolayer and the surface state of a strong topological insulator. We consider both a magnetic confinement and an infinite mass confinement. The ground state energy is computed as a function of the effective interaction parameter $α$ from the Hartree-Fock approximation and, alternatively, by employing the Müller exchange functional. For N=2, we compare those approximations to exact diagonalization results. The Hartree-Fock energies are highly accurate for the most relevant interaction range $α\alt 2$, but the Müller functional leads to an unphysical instability when $α\agt 0.756$. Up to 20 particles were studied using Hartree-Fock calculations. Wigner molecule formation was observed for strong but realistic interactions, accompanied by a rich peak structure in the addition energy spectrum.
description: 8 pages, 8 figures
title: Review of testicular tuberculosis and its mimics.
Creators: name: Alaejos Pérez, Isabel
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Genital / Reproductive system male
subject: Ultrasound
subject: eLearning
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Describe the normal anatomy of the testicle and its appearance by ultrasonography. The importance of ultrasound in diagnosing testicular pathology and the usefulness of different imaging techniques such as MRI in diagnosing certain etiologies such...
On the geometry of global function fields, the Riemann-Roch theorem, and finiteness properties of S-arithmetic groups
Creators: name: Köhl, Ralf
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Geometry (math.AG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Harder's reduction theory provides filtrations of euclidean buildings that allow one to deduce cohomological and homological properties of S-arithmetic groups over global function fields. In this survey I will sketch the main points of Harder's reduction theory starting from Weil's geometry of numbers and the Riemann-Roch theorem, describe a filtration that is particularly useful for deriving finiteness properties of S-arithmetic groups, and state the rank conjecture and its partial verifications that do not restrict the cardinality of the underlying field of constants. As a motivation for further research I also state a much more general conjecture on isoperimetric properties of S-arithmetic groups over global fields (number fields or function fields).
Overall INVADE architecture final - D4.3 INVADE H2020
Creators: name: Lloret-Gallego, Pau
name: Olivella-Rosell, Pol
Publisher: name: Zenodo
Year: 2018

description: This deliverable describes the outcomes of task T4.6, which reviewed the architecture of pilots and further developed the INVADE concept design to include the aggregated services in the second implementation phase. Finally, this document also describes the extensions of existing standards and protocols reviewed in T4.4. The proposed extensions include the new OCPP v2.0 protocol for

integrated smart charging and V2G and the new OCMP 1.0 for information between EMSP and the DSO (OSCP 2.0 pre-version).
title: ÐÐ¾Ð²ÑÑÐµÐ½Ð¸Ðµ ÑÐ½ÐµÑÐ³Ð¾ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð³Ð¸Ð¿ÐµÑÐ¼Ð°ÑÐºÐµÑÐ° Ñ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸ÐµÐ¼ ÑÐ²ÐµÑÐ¾Ð´Ð¸Ð¾Ð´Ð½Ð¾Ð³Ð¾ Ð¾Ð±Ð¾ÑÑÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¸ ÑÐ¸ÑÑÐµÐ¼ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ²ÐµÑÐ¾Ð¼
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Energy efficiency improvement of hypermarket with the use of led equipment and light control systems
Creators: name: Ð§ÐµÐ±Ð¾ÑÐ°ÑÐµÐ², ÐÐ»ÐµÐºÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð­Ð»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ°Ñ ÑÐ½ÐµÑÐ³Ð¸Ñ
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description: Ð ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°ÑÑÐ¼Ð°ÑÑÐ¸Ð²Ð°ÑÑÑÑ Ð²Ð¾Ð¿ÑÐ¾ÑÑ Ð²ÑÐ±Ð¾ÑÐ° Ð¸ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÑ ÑÑÐµÐ´ÑÑÐ² ÑÐ½ÐµÑÐ³Ð¾ÑÐ±ÐµÑÐµÐ¶ÐµÐ½Ð¸Ñ Ð² Ð¾Ð±Ð»Ð°ÑÑÐ¸ Ð¾ÑÐ²ÐµÑÐµÐ½Ð¸Ñ: ÑÐ²ÐµÑÐ¾Ð´Ð¸Ð¾Ð´Ð½ÑÑ ÑÐ²ÐµÑÐ¸Ð»ÑÐ½Ð¸ÐºÐ¾Ð² Ð¸ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÐ²ÐµÑÐ¾Ð¼ Ð½Ð° Ð±Ð°Ð·Ðµ Ð¿ÑÐ¾ÑÐ¾ÐºÐ¾Ð»Ð° DALI. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÑÐµÑ ÑÐµÐºÑÑÐµÐµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ ÑÐ¾ÑÑÐ¸Ð¹ÑÐºÐ¾Ð¹ Ð½Ð¾ÑÐ¼Ð°ÑÐ¸Ð²Ð½Ð¾Ð¹ Ð±Ð°Ð·Ñ Ð¿Ð¾ ÑÐ½ÐµÑÐ³Ð¾ÑÐ±ÐµÑÐµÐ¶ÐµÐ½Ð¸Ñ Ð¸ ÑÑÐµÐ¿ÐµÐ½Ñ ÑÐ½ÐµÑÐ³Ð¾ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐ¸Ð¼ÐµÐ½ÑÐµÐ¼ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¹ Ð¸ Ð¿ÑÐµÐ´Ð»Ð°Ð³Ð°ÐµÑ Ð¼ÐµÑÐ¾Ð´Ñ Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¸ ÑÐ°Ð±Ð¾Ñ Ð¿Ð¾ Ð·Ð°Ð¼ÐµÐ½Ðµ Ð»ÑÐ¼Ð¸Ð½ÐµÑÑÐµÐ½ÑÐ½Ð¾Ð³Ð¾ Ð¾ÑÐ²ÐµÑÐµÐ½Ð¸Ñ Ð½Ð° ÑÐ²ÐµÑÐ¾Ð´Ð¸Ð¾Ð´Ð½Ð¾Ðµ.
description: The master's thesis deals with the selection and practical application of modern means of energy saving in the field of lighting: led lamps and light control based on the DALI Protocol. The study analyzes the current state of the Russian regulatory framework for energy saving and the degree of energy efficiency of the technologies used and proposes methods for the organization of work on the replacement of fluorescent lighting with led.
Transition from static to kinetic friction: Insights from a 2D model
Creators: name: Trømborg, Jørgen
name: Scheibert, Julien
name: Amundsen, David Skålid
name: Thøgersen, Kjetil
name: Malthe-Sørenssen, Anders
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Physics (physics.class-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We describe a 2D spring-block model for the transition from static to kinetic friction at an elastic slider/rigid substrate interface obeying a minimalistic friction law (Amontons-Coulomb). By using realistic boundary conditions, a number of previously unexplained experimental results on precursory micro-slip fronts are successfully reproduced. From the analysis of the interfacial stresses, we derive a prediction for the evolution of the precursor length as a function of the applied loads, as well as an approximate relationship between microscopic and macroscopic friction coefficients. We show that the stress build-up due to both elastic loading and micro-slip-related relaxations depend only weakly on the underlying shear crack propagation dynamics. Conversely, crack speed depends strongly on both the instantaneous stresses and the friction coefficients, through a non-trivial scaling parameter.
description: 5 pages, 4 figures, accepted for publication in Physical Review Letters
Development of contractive synthesis of cyclobutanes from pyrrolidines
Creators: name: Hui, Chun-Ngai
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Cyclobutanes
subject: Iodonitrenes' contractive synthesis
subject: Natural product synthesis
subject: 570
subject: 540
subject: Naturstoffchemie
subject: Cyclobutanderivate

description: Carbocycles are omnipresence in chemical pharmaceuticals, biologically active natural products and organic functional materials. Construction of structurally intriguing, highly functionalized small carbocycles with congested stereocenters remain to be an intricate task in organic chemistry. Consistent endeavor such as innovation of chemical methodology and development of synthetic tactics has been made to improve the synthetic efficiency to these complex structures. In particular, the synthesis of carbocycle through ring contraction, which complies with the concept of synthetic efficiency in modern organic chemistry, has been widely applied in organic synthesis of complex architectures. In this thesis, the unprecedented, stereospecific and contractive synthesis of multi-substituted cyclobutanes from corresponding pyrrolidines is discussed. The reaction mechanism is investigated and the reaction was applied to the synthesis of cytotoxic natural product piperarborenine B.
Bridgeness: A Local Index on Edge Significance in Maintaining Global Connectivity
Creators: name: Cheng, Xue-Qi
name: Ren, Fu-Xin
name: Shen, Hua-Wei
name: Zhang, Zi-Ke
name: Zhou, Tao
Publisher: name: arXiv
Year: 2010
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences
subject: 89.75.Hc Networks and genealogical trees, 89.75.Fb Structures and organization in complex systems

description: Edges in a network can be divided into two kinds according to their different roles: some enhance the locality like the ones inside a cluster while others contribute to the global connectivity like the ones connecting two clusters. A recent study by Onnela et al uncovered the weak ties effects in mobile communication. In this article, we provide complementary results on document networks, that is, the edges connecting less similar nodes in content are more significant in maintaining the global connectivity. We propose an index named bridgeness to quantify the edge significance in maintaining connectivity, which only depends on local information of network topology. We compare the bridgeness with content similarity and some other structural indices according to an edge percolation process. Experimental results on document networks show that the bridgeness outperforms content similarity in characterizing the edge significance. Furthermore, extensive numerical results on disparate networks indicate that the bridgeness is also better than some well-known indices on edge significance, including the Jaccard coefficient, degree product and betweenness centrality.
description: 10 pages, 4 figures, 1 table
Decomposition of carbonates in capture of carbon dioxide from ambient air
Creators: name: Campbell, James Stephen
Publisher: name: University of British Columbia
Year: 2019

description: Direct Air Capture (DAC) is a technology for absorbing and concentrating CO₂ from air for geological sequestration or utilization. Capture is possible using alkali hydroxide solutions, forming alkali carbonates, with regeneration using lime or hematite. The CO₂-release step in each regeneration process requires high temperature, leading to high cost. A better understanding of the kinetics could reduce temperatures and facilitate integration with sustainable energy. In lime regeneration of KOH(aq), CaCO₃(s) decomposes forming CaO(s) and CO₂(g) (+178 kJ.mol⁻¹). In this thesis it was found that all CO₂ was released by 780°C during thermogravimetric analysis (N₂(g) flow rate of 60 ml.min⁻¹, heating rate of 20 °C.min⁻¹, particle size <5 µm and sample mass ~3 mg). A novel Accumulation Model was derived to describe the kinetics. Results indicated that the temperature of lime regeneration is tightly constrained by accumulation of reaction-generated CO₂(g) in the particle pores and sample interstices. In hematite regeneration of NaOH(aq), Fe₂O₃(s) reacts with Na₂CO₃(s), forming NaFeO₂(s) and CO₂(g) (+164 kJ.mol⁻¹). Ball-milling reduced particle size and mixed reactants intimately such that all CO₂(g) was released by 760°C (1:1 mole ratio) or 680°C (16:1 mole ratio). 90 % of the sodium was extracted as NaOH(aq) by hydrolysis of NaFeO₂(s). A Contact Point Model was used to describe the kinetics in terms of temperature, conversion, mole ratio, particle size and sample compactness. Results indicated that, with correct pre-treatment of the reactants, hematite regeneration could operate at lower temperature than lime regeneration. Even greater temperature reductions might be achieved using alternative reagents. A multi-criteria decision analysis was used to create a shortlist of seven oxides based on their acidity, solubility, toxicity and price. Each of the seven oxides was ball-milled with Na₂CO₃(s) and heated. Bixbyite (Mn₂O₃) showed most promise, reacting with Na₂CO₃(s) (1:1 mole ratio) forming NaMnO₂(s) and releasing all CO₂(g) by 650°C (+132 kJ.mol⁻¹). 80 % of the sodium was recovered as NaOH(aq) by hydrolysis of NaMnO₂(s). Bixbyite regeneration may therefore allow substantial reduction in the overall cost of Direct Air Capture using NaOH(aq).
title: MRCP as second line investigation of biliary disease. Is it necessary?
Creators: name: Davy, Shane
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Biliary Tract / Gallbladder
subject: CT
subject: MR-Cholangiography
subject: Ultrasound
subject: Comparative studies
subject: Acute

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: In our tertiary referral centre in Ireland, almost all acute patients with suspected biliary pathology are initially investigated with ultrasound or CT. Patients are then reviewed by senior clinical decision makers and may then proceed to further...
title: Проектирование предприятий ЦБП. Основы строительного дела
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2020

description: В учебном пособии представлен системный курс сведений обо всех этапах проектирования и строительства зданий и сооружений для технологического оборудования ЦБП. Предназначено для изучения курсов «Строительное дело», «Технология ЦБП», «Технологические процессы автоматизированных производств» студентами, обучающимися по направлениям 29.03.03, 15.03.02, 15.03.04, а также 18.03.01 (заочное отделение).
title: Systematic evaluation of imaging techniques and baseline characteristics in patients with suspected vasculitis
Creators: name: Koch, Vitali
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Arteries / Aorta
subject: Vascular
subject: CT
subject: MR-Angiography
subject: Ultrasound
subject: Computer Applications-Detection, diagnosis
subject: Inflammation

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Vasculitis represents a collective term for miscellaneous complex and heterogeneous vascular diseases characterized by vessel wall inflammation, finally resulting in the development of occlusive and aneurysmal vascular lesions accompanied by...
Lipschitz Bandits without the Lipschitz Constant
Creators: name: Bubeck, Sébastien
name: Stoltz, Gilles
name: Yu, Jia Yuan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We consider the setting of stochastic bandit problems with a continuum of arms. We first point out that the strategies considered so far in the literature only provided theoretical guarantees of the form: given some tuning parameters, the regret is small with respect to a class of environments that depends on these parameters. This is however not the right perspective, as it is the strategy that should adapt to the specific bandit environment at hand, and not the other way round. Put differently, an adaptation issue is raised. We solve it for the special case of environments whose mean-payoff functions are globally Lipschitz. More precisely, we show that the minimax optimal orders of magnitude $L^{d/(d+2)} \, T^{(d+1)/(d+2)}$ of the regret bound against an environment $f$ with Lipschitz constant $L$ over $T$ time instances can be achieved without knowing $L$ or $T$ in advance. This is in contrast to all previously known strategies, which require to some extent the knowledge of $L$ to achieve this performance guarantee.
title: Big Toe, Big Pain! What Should We Look For?
Creators: name: Vieira, João
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Musculoskeletal bone
subject: Musculoskeletal joint
subject: Musculoskeletal soft tissue
subject: Conventional radiography
subject: CT
subject: MR
subject: Diagnostic procedure
subject: Athletic injuries
subject: Infection
subject: Inflammation

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To review the normal anatomy and importance of the first metatarsophalangeal joint; To review multiple disorders that can produce hallux pain; To illustrate the imaging features of the different pathologies in plain radiography, CT and Magnetic...
Vortex Viscosity in Magnetic Superconductors Due to Radiation of Spin Waves
Creators: name: Shekhter, A.
name: Bulaevskii, L. N.
name: Batista, C. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In type-II superconductors that contain a lattice of magnetic moments, vortices polarize the magnetic system inducing additional contributions to the vortex mass, vortex viscosity, and vortex-vortex interaction. Extra magnetic viscosity is caused by radiation of spin waves by a moving vortex. Like in the case of Cherenkov radiation, this effect has a characteristic threshold behavior and the resulting vortex viscosity may be comparable to the well-known Bardeen-Stephen contribution. The threshold behavior leads to an anomaly in the current-voltage characteristics, and a drop in dissipation for a current interval that is determined by the magnetic excitation spectrum.
description: 4 pages, 1 figure
Solitonic supersymmetry restoration
Creators: name: Barnard, James
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Q-balls are a possible feature of any model with a conserved, global U(1) symmetry and no massless, charged scalars. It is shown that for a broad class of models of metastable supersymmetry breaking they are extremely influential on the vacuum lifetime and make seemingly viable vacua catastrophically short lived. A net charge asymmetry is not required as there is often a significant range of parameter space where statistical fluctuations alone are sufficient. This effect is examined for two supersymmetry breaking scenarios. It is found that models of minimal gauge mediation (which necessarily have a messenger number U(1)) undergo a rapid, supersymmetry restoring phase transition unless the messenger mass is greater than 10^8 GeV. Similarly the ISS model, in the context of direct mediation, quickly decays unless the perturbative superpotential coupling is greater than the Standard Model gauge couplings.
description: 17 pages, 3 figures, minor comments added, accepted for publication in JHEP
title: Lung imaging during acute chest syndrome (ACS) in sickle cell disease: computed tomography patterns
Creators: name: CHAHBI, Zakaria
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Haematologic
subject: Lung
subject: Thorax
subject: CT
subject: CT-High Resolution
subject: Computer Applications-General
subject: Acute
subject: Blood
subject: Haematologic diseases

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Sickle cell disease (SCD) is an inherited form of hemolytic anemia as a result of a single nucleotide polymorphism that causes hemoglobin S (HbS) to polymerize in low oxygen situations into an aberrant, less soluble sickle shape. Anemia is brought...
Anomalous scaling and super-roughness in the growth of CdTe polycrystalline films
Creators: name: Mata, Angélica S.
name: Ferreira,, Silvio C.
name: Ribeiro, Igor R. B.
name: Ferreira, Sukarno O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: CdTe films grown on glass substrates covered by fluorine doped tin oxide by Hot Wall Epitaxy (HWE) were studied through the interface dynamical scaling theory. Direct measures of the dynamical exponent revealed an intrinsically anomalous scaling characterized by a global roughness exponent $α$ distinct from the local one (the Hurst exponent $H$), previously reported [Ferreira \textit{et al}., Appl. Phys. Lett. \textbf{88}, 244103 (2006)]. A variety of scaling behaviors was obtained with varying substrate temperature. In particular, a transition from a intrinsically anomalous scaling regime with $H\neα<1$ at low temperatures to a super-rough regime with $H\neα>1$ at high temperatures was observed. The temperature is a growth parameter that controls both the interface roughness and dynamical scaling exponents. Nonlocal effects are pointed as the factors ruling the anomalous scaling behavior.
title: Процессы и аппараты химических технологий. Теория и практика насадочных аппаратов
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2020

description: Колонные аппараты насадочного типа широко используются в химической технологии, в энергетической и других отраслях промышленности при осуществлении процессов катализа, адсорбции, ректификации для систем газ – твердое тело, а также жидкость – твердое тело. Настоящее учебное пособие посвящено актуальным вопросам теории и практики гидродинамического моделирования насадочных аппаратов на основе исследования гидродинамических и массообменных характеристик. Учебное пособие предназначено для аспирантов, магистрантов и бакалавров, обучающихся по направлениям «Химическая технология», «Техносферная безопасность», «Рациональное природопользование». Пособие может быть полезно специалистам по химической технологии, инженерной защите окружающей среды, обладающих знаниями в области промышленной аэрогидродинамики, высшей математики.
title: A spectral CT-based multimodal radiomics model for preoperative discrimination of the invasiveness of pure ground-glass nodules
Creators: name: Chen, Hebing
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Lung
subject: CT
subject: Comparative studies
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The study aimed to investigate the value of dual-layer spectral CT-based multimodal radiomics in assessing the invasiveness of lung adenocarcinoma manifesting as ground glass nodules...
title: CT fistulography evaluation of chronic sternocutaneous fistulas after coronary artery bypass grafting: technique and findings
Creators: name: Raic, Matea
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Cardiovascular system
subject: Mediastinum
subject: Musculoskeletal bone
subject: CT
subject: Catheters
subject: Contrast agent-other
subject: Diagnostic procedure
subject: Abscess
subject: Fistula
subject: Infection

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To demonstrate the computed tomography (CT) protocol and findings ofchronic fistulas at the site of sternal incisions in patients who underwent coronary artery bypass grafting...
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐ¸ÑÑÐµÐ¼Ñ ÐºÐ¾Ð½ÑÑÐ¾Ð»Ñ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ñ Ð±Ð¾Ð´ÑÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð¾Ð´Ð¸ÑÐµÐ»Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð½Ð¾ÑÐ¸Ð¼Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of a driver wakefulness monitoring system using a wearable device
Creators: name: ÐÐ°Ð±Ð¸Ñ, ÐÐ»ÐµÐ½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð²Ð¾Ð¶Ð´ÐµÐ½Ð¸Ðµ
Ð´ÐµÑÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¼Ð¾ÑÐ³Ð°Ð½Ð¸Ð¹
Ð¸Ð½ÐµÑÑÐ¸Ð°Ð»ÑÐ½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°
ÐºÐ¾Ð½ÑÑÐ¾Ð»Ñ Ð±Ð¾Ð´ÑÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ
Ð¼Ð°ÑÐ¸Ð½Ð½Ð¾Ðµ Ð¾Ð±ÑÑÐµÐ½Ð¸Ðµ
Ð½ÐµÐ¹ÑÐ¾Ð½Ð½Ð°Ñ ÑÐµÑÑ
ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½ÑÐµÑÐ°Ð»Ð¾Ð³ÑÐ°Ð¼Ð¼Ð°
driving
blink detection
inertial system
control of wakefulness
machine learning
neural network
electroencephalogram

description: Ð Ð°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ ÑÐ¸ÑÑÐµÐ¼Ñ ÐºÐ¾Ð½ÑÑÐ¾Ð»Ñ Ð±Ð¾Ð´ÑÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ Ð²Ð¾Ð´Ð¸ÑÐµÐ»Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð½Ð¾ÑÐ¸Ð¼Ð¾Ð³Ð¾ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð°. ÐÐ°Ð½Ð½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð° Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÐµÑÑÑ Ð´Ð»Ñ Ð½Ð°ÑÐ¾Ð¶Ð´ÐµÐ½Ð¸Ñ Ð²Ð¾Ð´Ð¸ÑÐµÐ»Ñ Ð² ÑÑÑÐ°Ð²ÑÐµÐ¼ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ð¸ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ¸Ð³Ð½Ð°Ð»Ð¾Ð² Ñ Ð´Ð°ÑÑÐ¸ÐºÐ¾Ð² ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½ÑÐµÑÐ°Ð»Ð¾Ð³ÑÐ°Ð¼Ð¼Ñ Ð¸ Ð¸Ð½ÐµÑÑÐ¸Ð°Ð»ÑÐ½Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ð½Ð°Ð²Ð¸Ð³Ð°ÑÐ¸Ð¸. Ð ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÑ Ð¿ÑÐ¸Ð·Ð½Ð°ÐºÐ¾Ð² Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÑÑ Ð´Ð»Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ, ÑÐ°ÑÑÐ¾ÑÐ° Ð¼Ð¾ÑÐ³Ð°Ð½Ð¸Ð¹ Ð¸ ÑÐºÐ¾ÑÐ¾ÑÑÑ Ð½Ð°ÐºÐ»Ð¾Ð½Ð° Ð³Ð¾Ð»Ð¾Ð²Ñ.
description: The work is devoted to the development of a driver wake control system using a wearable device. The driver is found in the tired state using the developed system on the basis of the signal from the electroencephalogram sensors and the inertial system,. This happens on several grounds: by duration and the frequency of blinks, the speed of the head tilt.
Destroying a near-extremal Kerr-Newman black hole
Creators: name: Saa, Alberto
name: Santarelli, Raphael
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revisit here a previous argument due to Wald showing the impossibility of turning an extremal Kerr-Newman black hole into a naked singularity by plunging test particles across the black hole event horizon. We extend Wald's analysis to the case of near-extremal black holes and show that it is indeed possible to destroy their event horizon, giving rise to naked singularities, by pushing test particles towards the black hole as, in fact, it has been demonstrated explicitly by several recent works. Our analysis allows us to go a step further and to determine the optimal values, in the sense of keeping to a minimum the backreaction effects, of the test particle electrical charge and angular momentum necessary to destroy a given near-extremal Kerr-Newman black hole. We describe briefly a possible realistic scenario for the creation of a Kerr naked singularity from some recently discovered candidates to be rapidly rotating black holes in radio galaxies.
description: 5 pages, 2 figures. New references added, final version accepted for publication in PRD
title: Ð¡ÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸Ð³Ð½Ð°Ð»ÑÐ½Ð¾-ÐºÐ¾Ð´Ð¾Ð²ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ OFDM-MIMO Ð¸ Ð¢Ð¡Ð
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Comparative analysis of signal-code constructions based on OFDM-MIMO and TCM
Creators: name: Ð®ÑÐ°ÑÐ¾Ð², Ð Ð¾Ð¼Ð°Ð½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: OFDM
TCM
MIMO
PSK
QAM
IFFT
SNR
BER
OSTBC
Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ñ
Ð¿Ð¾Ð¼ÐµÑ Ð¾ÑÑÑÐ¾Ð¹ÑÐ¸Ð²Ð¾ÑÑÑ
Ð¡ÐÐ
modulation
noise-immunity
SCC

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«Ð¡ÑÐ°Ð²Ð½Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· ÑÐ¸Ð³Ð½Ð°Ð»ÑÐ½Ð¾-ÐºÐ¾Ð´Ð¾Ð²ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¹ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ OFDM-MIMO Ð¸ Ð¢Ð¡ÐÂ». ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸Ð³Ð½Ð°Ð»ÑÐ½Ð¾-ÐºÐ¾Ð´Ð¾Ð²ÑÑ ÐºÐ¾Ð½-ÑÑÑÑÐºÑÐ¸Ð¹, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑÑÐ¸Ñ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ñ Ñ ÑÐµÑÐµÑÑÐ°ÑÑÐ¼ ÐºÐ¾Ð´Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸ÐµÐ¼ (TCM) Ð¸ Ð¾ÑÑÐ¾Ð³Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ðµ Ð¼ÑÐ»ÑÑÐ¸Ð¿Ð»ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ñ ÑÐ°ÑÑÐ¾ÑÐ½ÑÐ¼ ÑÐ°Ð·Ð´ÐµÐ»ÐµÐ½Ð¸ÐµÐ¼ (OFDM) Ð² ÑÐ¸ÑÑÐµÐ¼Ð°Ñ 5G. ÐÐ»Ñ ÑÑÐ¾Ð³Ð¾ Ð±ÑÐ»Ð° ÑÐ¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð° ÑÐ¸ÑÑÐµÐ¼Ð° ÑÐ²ÑÐ·Ð¸, Ð¸ÑÐ¿Ð¾Ð»ÑÐ·ÑÑ-ÑÐ°Ñ TCM Ð² Ð¿Ð°ÐºÐµÑÐµ MATLAB Ð² ÑÑÐµÐ´Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Simulink, Ð° ÑÐ°ÐºÐ¶Ðµ Ð±ÑÐ» Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½ ÐºÐ¾Ð´ MATLAB Ð´Ð»Ñ Ð¸Ð¼Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ²ÑÐ·Ð¸ Ñ OFDM. ÐÐ¾Ð¼Ð±Ð¸Ð½Ð¸ÑÑÑ ÐºÐ°Ð¶Ð´ÑÑ ÑÐ¸ÑÑÐµÐ¼Ñ Ñ Ð¼Ð½Ð¾Ð³Ð¾Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÐºÐ²Ð°Ð´ÑÐ°-ÑÑÑÐ½Ð¾Ð¹ Ð°Ð¼Ð¿Ð»Ð¸ÑÑÐ´Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸ÐµÐ¹ (QAM) Ð¸ ÑÐ°Ð·Ð¾Ð²Ð¾Ð¹ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸ÐµÐ¹ (PSK) Ð¸ Ð¼ÐµÐ½Ñ ÑÐ¾Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ðµ ÑÐ¸Ð³Ð½Ð°Ð»-ÑÑÐ¼ (SNR), Ð±ÑÐ»Ð¸ ÑÐ½ÑÑÑ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ñ Ð±Ð¸ÑÐ¾Ð²Ð¾Ð¹ Ð¾ÑÐ¸Ð±-ÐºÐ¸ (BER). Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð¼ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ ÐºÑÐ¸Ð²ÑÑ Ð¿Ð¾Ð¼ÐµÑÐ¾ÑÑÑÐ¾Ð¹-ÑÐ¸Ð²Ð¾ÑÑÐ¸ Ð´Ð»Ñ ÐºÐ°Ð¶Ð´Ð¾Ð¹ ÑÐ¸ÑÑÐµÐ¼Ñ Ñ ÑÐ°Ð·Ð½ÑÐ¼Ð¸ Ð²Ð¸Ð´Ð°Ð¼Ð¸ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ð¸ Ð¸ Ð¸Ñ ÑÑÐ°Ð²Ð½Ð¸-ÑÐµÐ»ÑÐ½ÑÐ¹ Ð°Ð½Ð°Ð»Ð¸Ð· Ð¿Ð¾ Ð½ÐµÑÐºÐ¾Ð»ÑÐºÐ¸Ð¼ ÐºÑÐ¸ÑÐµÑÐ¸ÑÐ¼.
description: The subject of the graduate qualification work qualification work is: Â«Comparative analysis of signal-code constructions based on OFDM-MIMO and TCMÂ». This work is devoted to the study of signal-code constructions using trel-lis-coded modulation (TCM) and orthogonal frequency division multiplexing (OFDM) in 5G systems. For this, a communication system was modeled using TCM in the MATLAB package in the Simulink simulation environment, and MATLAB code was also used to simulate a communication system with OFDM. By combining each system with multi-position quadrature amplitude modulation (QAM) and phase modulation (PSK) and signal-to-noise ratio (SNR), the bit error rate (BER) values were taken down. The result of the work is the construction of curves of noise-immunity for each system with different types of modulation and their comparative analysis according to several crite-ria.
title: MRI analysis of acute appendicitis in pregnant women – from scratch
Creators: name: Mandić, Tinamarel
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Emergency
subject: Gastrointestinal tract
subject: MR
subject: Diagnostic procedure
subject: Education
subject: Imaging sequences
subject: Abscess
subject: Acute
subject: Inflammation

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: This study aims to help an inexperienced radiologist to analyze MRI findings of acute abdominal pain in pregnant women. We highlight acute appendicitis as the most common nonobstetric cause of urgent surgical intervention in pregnancy...
Topology of configuration space of two particles on a graph, II
Creators: name: Farber, Michael
name: Hanbury, Elizabeth
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 55R80, 57M15

description: This paper continues the investigation of the configuration space of two distinct points on a graph. We analyze the process of adding an additional edge to the graph and the resulting changes in the topology of the configuration space. We introduce a linking bilinear form on the homology group of the graph with values in the cokernel of the intersection form (introduced in Part I of this work). For a large class of graphs, which we call mature graphs, we give explicit expressions for the homology groups of the configuration space. We show that under a simple condition, adding an edge to a mature graph yields another mature graph.
description: 24 pages, 12 figures; Section 7 revised in v2, published version