cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Charge Symmetry Breaking and QCD
Creators: name: Miller, Gerald A
name: Opper, Allena K.
name: Stephenson, Edward J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Charge symmetry breaking (CSB) in the strong interaction occurs because of the difference between the masses of the up and down quarks. The use of effective field theories allows us to follow this influence of confined quarks in hadronic and nuclear systems. The progress in observing and understanding CSB is reviewed with particular attention to the recent successful observations of CSB in measurements involving the production of a single neutral pion and to the related theoretical progress.
description: 41 pages, 10 figures, for Nov. 2006 edition Annual Review of Nuclear and Particle Physics
Carrier dynamics and coherent acoustic phonons in nitride heterostructures
Creators: name: Sanders, G. D.
name: Stanton, C. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We model generation and propagation of coherent acoustic phonons in piezoelectric InGaN/GaN multi-quantum wells embedded in a \textit{pin} diode structure and compute the time resolved reflectivity signal in simulated pump-probe experiments. Carriers are created in the InGaN wells by ultrafast pumping below the GaN band gap and the dynamics of the photoexcited carriers is treated in a Boltzmann equation framework. Coherent acoustic phonons are generated in the quantum well via both deformation potential electron-phonon and piezoelectric electron-phonon interaction with photogenerated carriers, with the latter mechanism being the dominant one. Coherent longitudinal acoustic phonons propagate into the structure at the sound speed modifying the optical properties and giving rise to a giant oscillatory differential reflectivity signal. We demonstrate that coherent optical control of the differential reflectivity can be achieved using a delayed control pulse.
description: 14 pages, 11 figures
Model of cunning agents
Creators: name: Denys, Mateusz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: A numerical agent-based spin model of financial markets, based on the Potts model from statistical mechanics, with a novel interpretation of the spin variable (as regards financial-market models) is presented. In this model, a value of the spin variable is only the agent's opinion concerning current market situation, which he communicates to his nearest neighbors. Instead, the agent's action (i.e., buying, selling, or staying inactive) is connected with a change of the spin variable. Hence, the agents can be considered as cunning in this model. That is, these agents encourage their neighbors to buy stocks if the agents have an opportunity to sell them, and the agents encourage their neighbors to sell stocks if the agents have a reversed opportunity. Predictions of the model are in good agreement with empirical data from various real-life financial markets. The model reproduces the shape of the usual and absolute-value autocorrelation function of returns as well as the distribution of times between superthreshold losses.
description: 20 pages, 10 figures
title: An unusual cause of acute right abdominal pain in young woman
Creators: name: Valenti, Giacomo
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Emergency
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: A 37-year-old puerpera presented to the Emergency Department with persistent pain in right lower abdominal quadrant for 2 days. She reported regular bowel habits and was apyretic. No relevant previous pathologies were noted.

Physical examination showed tenderness at right flank and lower abdominal quadrant, as well as slightly positive Blumberg test in the right paraumbilical region. Murphy test was negative and costovertebral angle tenderness was not demonstrated. The only abnormalities on blood tests were WBC count (11x103 cells) and CRP (145 mg/dL). 

description: 37 yeear, female
Quantum Nature of the Big Bang
Creators: name: Ashtekar, Abhay
name: Pawlowski, Tomasz
name: Singh, Parampreet
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Some long standing issues concerning the quantum nature of the big bang are resolved in the context of homogeneous isotropic models with a scalar field. Specifically, the known results on the resolution of the big bang singularity in loop quantum cosmology are significantly extended as follows: i) the scalar field is shown to serve as an internal clock, thereby providing a detailed realization of the `emergent time' idea; ii) the physical Hilbert space, Dirac observables and semi-classical states are constructed rigorously; iii) the Hamiltonian constraint is solved numerically to show that the big bang is replaced by a big bounce. Thanks to the non-perturbative, background independent methods, unlike in other approaches the quantum evolution is deterministic across the deep Planck regime.
description: Revtex4, 4 Pages, 2 Figures. Minor changes to match the published version in Physical Review Letters
Spatially asymptotic S-matrix from general boundary formulation
Creators: name: Colosi, Daniele
name: Oeckl, Robert
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct a new type of S-matrix in quantum field theory using the general boundary formulation. In contrast to the usual S-matrix the space of free asymptotic states is located at spatial rather than at temporal infinity. Hence, the new S-matrix applies to situations where interactions may remain important at all times, but become negligible with distance. We show that the new S-matrix is equivalent to the usual one in situations where both apply. This equivalence is mediated by an isomorphism between the respective asymptotic state spaces that we construct. We introduce coherent states that allow us to obtain explicit expressions for the new S-matrix. In our formalism crossing symmetry becomes a manifest rather than a derived feature of the S-matrix.
description: 27 pages, LaTeX + revtex4; v2: various corrections, references updated
Non-local magnon-based transport in yttrium iron garnet/platinum heterostructures at high temperatures
Creators: name: Schlitz, Richard
name: Granovsky, Sergey
name: Goennenwein, Sebastian T. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The spin Hall effect in a heavy metal thin film allows to probe the magnetic properties of an adjacent magnetic insulator via magnetotransport measurements. Here, we investigate the magnetoresistive response of yttrium iron garnet/platinum heterostructures from room temperature to beyond the Curie temperature $T_\mathrm{C, YIG} \approx 560\,\mathrm{K}$ of the ferrimagnetic insulator. We find that the amplitude of the (local) spin Hall magnetoresistance decreases monotonically from $300\,\mathrm{K}$ towards $T_\mathrm{C}$, mimicking the evolution of the saturation magnetization of yttrium iron garnet. Interestingly, the spin Hall magnetoresistance vanishes around $500\,\mathrm{K}$, well below $T_\mathrm{C}$, which we attribute to the formation of a parasitic interface layer by interdiffusion. Around room temperature the non-local magnon-mediated magnetoresistance exhibits a power law scaling $T^α$ with $α= 3/2$, as already reported. The exponent decreases gradually to $α\sim 1/2$ at around $420\,\mathrm{K}$, before the non-local magnetoresistance vanishes rapidly at a similar temperature as the spin Hall magnetoresistance. We attribute the reduced $α$ at high temperatures to the increasing thermal magnon population which leads to enhanced scattering of the non-equilibrium magnon population and a reduced magnon diffusion length. Finally, we find a magnetic field independent offset voltage in the non-local signal for $T > 470\,\mathrm{K}$ which we associate with electronic leakage currents through the normally insulating yttrium iron garnet film. Indeed, this non-local offset voltage is thermally activated with an energy close to the band gap.
description: 7 pages, 4 figures
title: Acute non-bacterial multifocal osteomyelitis
Creators: name: Paltenghi, Federico
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Musculoskeletal system
subject: Musculoskeletal bone
subject: Musculoskeletal system
subject: Paediatric
subject: Conventional radiography
subject: MR
subject: Clinical Cases

description: Clinical History: A 9-year-old boy is admitted to our facility for a recent onset of fever and joint pain prevalent in pelvis and lower limbs. The clinical evaluation demonstrates mild joint swelling at the left tibiotarsal joint. Laboratory tests show an inflammatory condition: CPR 49,20 mg/l , ESR 36 mm/h, WBC 11,520 x 109/L, INR 1,43.

description: 9 years, male
title: Goldston syndrome: Dandy Walker malformation with features of bilateral polycystic kidneys – a rare case report
Creators: name: Kayastha, Rumita
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Uroradiology & genital male imaging
subject: Obstetrics (Pregnancy / birth / postnatal period)
subject: Paediatric
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: A 32-year-old Gravida 2 Para1 female presented for a routine anomaly ultrasound examination which showed a single live fetus corresponding to 19 weeks of gestation. There was no past history of consanguinity among the parents and no positive family history of renal diseases on both maternal and paternal side.

description: 32 years, female
Elicitation: Verbs and seven vowels in isolation
Creators: name: Mbûûi, Mwambi G.
name: Hyman, Larry M.
name: Zhong, Cynthia
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: Tiania language

description: 2 MP3 files (Zhong), 1 MP4 file (Hyman). Vowels are /i î e u û o a/.
A new kind of vortex pinning in superconductor / ferromagnet nanocomposites
Creators: name: Palau, A.
name: Parvaneh, H.
name: Stelmashenko, N. A.
name: Macmanus-Driscoll, H. Wang J. L.
name: Blamire, M. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: This paper reports the observation of hysteresis in the vortex pinning in a superconductor / ferromagnetic epitaxial nanocomposite consisting of fcc Gd particles incorporated in a Nb matrix. We show that this hysteretic pinning is associated with magnetic reversal losses in the Gd particles and is fundamentally different in origin to pinning interactions previously observed for ferromagnetic particles or other microstructural features.
description: Submitted to PRL
title: Lipoma of the right palatine tonsil
Creators: name: Unzue Garcia-Falces, Guillermo
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Head & neck imaging
subject: Head and neck
subject: CT
subject: eLearning
subject: Clinical Cases

description: Clinical History: A 51-year-old man with mild symptoms of dysphagia for 1 year. He didn’t claim fever, nausea or vomiting. Pharyngeal exam revealed a well-defined hypodense lesion adjacent to the right palatine tonsil. Nasopharynx, hypopharynx, laryngeal structures and cervical soft tissues were normal.

description: 51 years, male
title: Cutaneous lymphangitis carcinomatosis from a larynx carcinoma
Creators: name: Sousa, Pedro Miguel
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Head & neck imaging
subject: Head and neck
subject: Oncology
subject: CT
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: A 63-year-old man with a 2 years history of larynx squamous cell carcinoma submitted to a total laryngectomy with right neck dissection and neoadjuvant chemoradiotherapy presents to the emergency room with facial and neck small cutaneous nodules with mild inflammatory signs and de novo facial and lingual oedema.

description: 63 years, male
Can the EHT M87 results be used to test general relativity?
Creators: name: Gralla, Samuel E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: No. All theoretical predictions for the observational appearance of an accreting supermassive black hole, as measured interferometrically by a sparse Earth-sized array at current observation frequencies, are sensitive to many untested assumptions about accretion flow and emission physics. There is no way to distinguish a violation of general relativity (GR) from the much more likely scenario that the relevant "gastrophysical" assumptions simply do not hold. Tests of GR will become possible with longer interferometric baselines (likely requiring a space mission) that reach the resolution where astrophysics-independent predictions of the theory become observable.
title: Pituitary metastasis of lung adenocarcinoma
Creators: name: Unzue Garcia-Falces, Guillermo
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Head & neck imaging
subject: CNS
subject: MR
subject: Education
subject: Clinical Cases

description: Clinical History: A 61-year-old male with history of stage IV lung adenocarcinoma treated with chemotherapy and immunotherapy, who developed panhypopituitarism due to pembrolizumab hypophysitis treated with corticosteroids substitutive treatment. He came to our radiology department with headache and diplopia for 4 days. Hypophysitis recurrence was the clinical suspicion. Contrast-enhanced cranial CT was performed.

description: 61 years, male
Relativistic MHD Winds from Rotating Neutron Stars
Creators: name: Bucciantini, N.
name: Thompson, Todd. A.
name: Arons, J.
name: Quataert, E.
name: Del Zanna, L.
name: .
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We solve for the time-dependent dynamics of axisymmetric, general relativistic magnetohydrodynamic winds from rotating neutron stars. The mass loss rate is obtained self-consistently as a solution to the MHD equations, subject to a finite thermal pressure at the stellar surface. We consider both monopole and dipole magnetic field geometries and we explore the parameter regime extending from low magnetization (low-sigma_o), almost thermally-driven winds to high magnetization (high-sigma_o), relativistic Poynting-flux dominated outflows. We compute the angular momentum and rotational energy loss rates as a function of sigma_o and compare with analytic expectations from the classical theory of pulsars and magnetized stellar winds. In the case of the monopole, our high-sigma_o calculations asymptotically approach the analytic force-free limit. If we define the spindown rate in terms of the open magnetic flux, we similarly reproduce the spindown rate from recent force-free calculations of the aligned dipole. However, even for sigma_o as high as ~20, we find that the location of the Y-type point (r_Y), which specifies the radius of the last closed field line in the equatorial plane, is not the radius of the light cylinder R_L = c/omega (R = cylindrical radius), as has previously been assumed in most estimates and force-free calculations. Instead, although the Alfven radius at intermediate latitudes quickly approaches R_L as sigma_o exceeds unity, r_Y remains significantly less than R_L. Because r_Y < R_L, our calculated spindown rates thus exceed the classic ``vacuum dipole'' rate. We discussthe implications of our results for models of rotation-powered pulsars and magnetars, both in their observed states and in their hypothesized rapidly rotating initial state.
description: Accepted for publication in MNRAS. 19 pages, 21 figures
Complex solid solution electrocatalyst discovery by prediction and high-throughput experimentation
Creators: name: Batchelor, Thomas A. A.
name: Löffler, Tobias
name: Xiao, Bin
name: Krysiak, Olga A.
name: Strotkötter, Valerie
name: Pedersen, Jack K.
name: Clausen, Christian M.
name: Savan, Alan
name: Schuhmann, Wolfgang
name: Rossmeisl, Jan
name: Ludwig, Alfred
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Efficient discovery of electrocatalysts for electrochemical energy conversion reactions is of utmost importance to combat climate change. With the example of the oxygen reduction reaction we show that by utilising a data-driven discovery cycle, the multidimensionality challenge offered by compositionally complex solid solution (high entropy alloy) electrocatalysts can be mastered. Iteratively refined computational models predict activity trends for quinary target compositions, around which continuous composition spread thin-film libraries are synthesized. High-throughput characterisation datasets are then input for refinement of the model. The refined model correctly predicts activity maxima of the exemplary model system Ag-Ir-Pd-Pt-Ru for the oxygen reduction reaction. The method can identify optimal complex solid solutions for electrochemical reactions in an unprecedented manner.
Algorithm Design and Analysis for Finding Endmembers in Hyperspectral Imagery
Creators: name: CHEN, SHIHYU
Publisher: name: Maryland Shared Open Access Repository
Year: 2014

description: This dissertation investigates two issues of finding endmembers which have been overlooked in the past. One is to design an effective algorithm for finding endmembers. Another is to determine how many endmembers present in the data to be processed. In particular, two major contributions are made in this dissertation. One is to show that two well-known Endmember Finding Algorithms (EFAs), orthogonal projection OP-based Vertex Component Analysis (VCA) and simplex volume-based Simplex Grwoing Algorithm (SGA) are shown to be identical to Automatic Target Generation Process (ATGP) provided that the first initial endmember for SGA and the initial endmember in finding each new endmember by VCA are specified by ATGP. A second contribution is to use real target signal sources directly found from the data to determine the number of signal sources, referred to as referred to as Endmember-Specified Virtual Dimensionality (ES-VD) via a Neyman Pearson detector or maximum likelihood detector. When a real target signal source fails the test, this signal source will be considered as an endmembers. As a result, the number of test failures determined the value of ES-VD.
Opinion Mining in Higher Education: A Corpus-Based Approach (Supplementary material)
Creators: name: Grljevic, Olivera
name: Bošnjak, Zita
name: Kovačević, Aleksandar
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460206
subject: Knowledge representation and reasoning
classificationCode: 460208
subject: Natural language processing
classificationCode: 390303
subject: Higher education
classificationCode: 460308
subject: Pattern recognition
classificationCode: 460502
subject: Data mining and knowledge discovery

description: Document represents supplementary material of the paper entitled "Opinion Mining in Higher Education: A Corpus-Based Approach" published in Enterprise Information System, special issue The Artificial Intelligence-enabled Enterprise Information Systems. It summarizes statistical and linguistic analysis of annotated corpus in domain of online reviews of higher education. Linguistic and statistical analysis were performed in order to provide an in-depth insight into the structure of the corpus. Our detail observations are given in this document.
The Association of Inattention and Children's Math Development: A Longitudinal Study
Creators: name: Lee, Catherine Keefer
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: attention
growth curve
inattention
longitudinal
math development
math skills

description: This study examined the association of inattention and children's math development as children progress from elementary into middle school. Of particular interest was whether children who are consistently rated by their teachers as frequently inattentive exhibit different patterns of growth in math fact retrieval, calculation, and conceptual knowledge of place value than children who are seldom inattentive. Math tests were administered to children in third through sixth grades, and behavior rating scales to assess inattention were completed by their teachers in second through fifth grades. Growth in math skills was analyzed using both zero-order and partial correlations and latent growth curve modeling.  Results indicated that children's inattention in second grade was related to lower levels of fact retrieval and calculation performance in third grade. However, with one exception, inattention was not found to be associated with year-to-year growth or overall growth in any of the three math skills evaluated. The study also investigated third grade predictors of sixth grade calculation skill. Findings indicated that children's third grade inattention was as predictive of their sixth grade calculation scores as were the third grade measures of fact retrieval, calculation skill, and conceptual knowledge of place value. In analyses conducted to screen specifically for later math calculation difficulties, fact retrieval emerged as a ""good"" screening test for the sample of children evaluated. This information has the potential for aiding the development of appropriate intervention techniques.
title: Giant malignant phyllodes tumour of the breast
Creators: name: Castro, Jose Miguel
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Breast imaging
subject: Breast
subject: Oncology
subject: Mammography
subject: Cancer
subject: Clinical Cases

description: Clinical History: A 49-year-old patient presented to our hospital with a mass on the left breast that had been growing during the past 4 years. On physical examination, the mass had a hard consistence and caused skin ulceration. No axillary nodes were found clinically.

description: 49 years, female
A Usability study of the Pico Authentication Device: User Reactions to Pico Emulated on an Android Phone
Creators: name: Shah, Chirag Ketan
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: Android Emulation
Authentication
Pico
Token Authentication
Usability

description: We emulate the Pico authentication token on the Android Smartphone and evaluate its usability through a casual survey of users.  In 2011, Stajano proposed Pico as a physical token-based authentication system to replace traditional passwords.  As far as we know, Pico has never been implemented nor tested by users.  We evaluate the usability of our emulation of Pico by a comparative study in which each user creates and authenticates herself to three online accounts twice: once using Pico, and once using passwords.  The study measures the accuracy, efficiency, and satisfaction of users in these tasks.  Pico offers many advantages over passwords, including human-memory- and physically-effortless[3] tasks, no typing and high security.  Based on public-key cryptography, Pico's security design ensures that no credential ever leaves the Pico token unencrypted.  In summer 2014 we conducted a survey with 23 subjects from the UMBC community.  Each subject carried out scripted tasks involving authentication, separately using our Pico emulator and a traditional password system.   We measured the time and accuracy with which subjects carried out these tasks, and asked each subject to complete a survey.  The survey instrument included ten Likert-scale questions and free responses and a demographics questionnaire. We then analyzed these data to find that subjects reacted positively to the Pico emulator in their responses to the Likert questions. By statistical analysis of the reactions and measurements gathered in this study we observed that subjects found the system accurate, efficient and satisfactory. We represent these data in forms or graphs and charts organised in such a way that a comparison between the two systems for authentication is clearly seen.
Pole skipping away from maximal chaos
Creators: name: Choi, Changha
name: Mezei, Márk
name: Sárosi, Gábor
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Pole skipping is a recently discovered subtle effect in the thermal energy density retarded two point function at a special point in the complex $(ω,p)$ planes. We propose that pole skipping is determined by the stress tensor contribution to many-body chaos, and the special point is at $(ω,p)_\text{p.s.}= i λ^{(T)}(1,1/u_B^{(T)})$, where $λ^{(T)}=2π/β$ and $u_B^{(T)}$ are the stress tensor contributions to the Lyapunov exponent and the butterfly velocity respectively. While this proposal is consistent with previous studies conducted for maximally chaotic theories, where the stress tensor dominates chaos, it clarifies that one cannot use pole skipping to extract the Lyapunov exponent of a theory, which obeys $λ\leq λ^{(T)}$. On the other hand, in a large class of strongly coupled but non-maximally chaotic theories $u_B^{(T)}$ is the true butterfly velocity and we conjecture that $u_B\leq u_B^{(T)}$ is a universal bound. While it remains a challenge to explain pole skipping in a general framework, we provide a stringent test of our proposal in the large-$q$ limit of the SYK chain, where we determine $λ,\, u_B,$ and the energy density two point function in closed form for all values of the coupling, interpolating between the free and maximally chaotic limits. Since such an explicit expression for a thermal correlator is one of a kind, we take the opportunity to analyze many of its properties: the coupling dependence of the diffusion constant, the dispersion relations of poles, and the convergence properties of all order hydrodynamics.
description: 39 pages, 13 figures
Casimir edge effects
Creators: name: Gies, Holger
name: Klingmuller, Klaus
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute Casimir forces in open geometries with edges, involving parallel as well as perpendicular semi-infinite plates. We focus on Casimir configurations which are governed by a unique dimensional scaling law with a universal coefficient. With the aid of worldline numerics, we determine this coefficient for various geometries for the case of scalar-field fluctuations with Dirichlet boundary conditions. Our results facilitate an estimate of the systematic error induced by the edges of finite plates, for instance, in a standard parallel-plate experiment. The Casimir edge effects for this case can be reformulated as an increase of the effective area of the configuration.
description: 5 pages, 6 figures
APPROXIMATE SEARCH OF MALWARE CODE ACROSS A FAMILY OF MALWARE
Creators: name: Gill, Karan Rajendra
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: malware
ngram
ollydbg
zeus

description: In the ever-growing security risk of the technological world malware plays an important role. To protect the sensitive data from the malicious software, malware analysts need the best of the tools to identify and eliminate the potential risk that the hostile software may cause to disrupt the computer systems. The idea behind this research is to extend the ability of the existing tool OllyDbg that will ease the process of detecting similar patterns of bugs from the existing known malware. We do this by writing custom plugins that are supported by OllyDbg. The plugin searches for hex code from the existing family of malwares based on the principle of Ngram text matching. The resemblance of these byte codes is the key to help the analyst from making judgments about the malware code that looks suspicious of infecting the system. With this implementation, OllyDbg can now look and process data outside its environment.
The influence of didecyldimethylammonium chloride (DDAC) treatment on wood weathering
Creators: name: Ruiying, Liu
Publisher: name: University of British Columbia
Year: 2009

description: The potential of alkylammonium compound (AACs) as wood preservatives, was recognized during the 1970s. Two of the problems associated with AAC-treated wood, particularly treated with didecyldimethylammonium chloride (DDAC), are severe surface degradation and discoloration compared to ammoniacal copper quaternary ammonium compound (ACQ) and chromated copper arsenate (CCA) treated wood. The key objective of this study was to identify the mechanistic pathways by which DDAC affects wood weathering. An FTIR technique was developed and employed to study the photodegradation of wood. The compositional changes in wood sections of various thickness following DDAC and ACQ treatment, and either natural weathering or UV irradiation were examined using FTIR spectroscopy. The studies on DDAC and ACQ fixation suggested that interaction between the preservative and lignin had taken place and that these preservatives favored fixation to lignin over cellulose. The natural weathering and artificial UV irradiation studies showed that DDAC accelerated wood weathering via enhancing wood photodegradation (mainly delignification), and that ACQ slowed wood photodegradation as demonstrated by inhibiting the formation of carbonyl groups and delignification. The effect of DDAC, ACQ, and CCA treatments and their retention on wood photodegradation during weathering was investigated using FTIR and Ultraviolet-Visible reflectance spectroscopy. Delignification, demethoxylation, and cellulose degradation were accelerated by DDAC treatment, but slowed by both ACQ and CCA treatments. ACQ treatment also inhibited carbonyl formation. Those effects were enhanced by higher preservative retentions. Weight loss of the weathered samples corroborated the FTIR and UV-Vis results. The comparison of the photodegradation of methylated and unmethylated wood demonstrated that both fixed and adsorbed DDAC must be involved in the photodegradation mechanism and that the fixation reaction of DDAC to lignin was one of the principal factors affecting wood photodegradation. The studies using lignin model compounds in solution revealed that DDAC had no influence on the major photoreactions taking place in the solvent employed. The lack of significant DDAC-lignin interaction in solution most likely explains why the solution photochemistry failed to provide useful evidence of the pathway. The ESR studies on the free radical formation and decay in wood revealed that DDAC functioned as photosensitizer. The fixed DDAC was essential for sensitization to occur while the adsorbed DDAC accelerated this process.
title: Subcutaneous pilomatrix carcinoma: A radiopathological challenge
Creators: name: Iglesias, Gotzon
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Musculoskeletal system
subject: Musculoskeletal soft tissue
subject: CT
subject: MR
subject: Ultrasound
subject: Cancer
subject: Pathology
subject: Clinical Cases

description: Clinical History: A 49-year-old man was referred to our institution to evaluate a hypogastric subcutaneous mass of recent onset that experienced very fast growth in the last five months.

description: 49 years, male
Sondheimer oscillations as a probe of non-ohmic flow in type-II Weyl semimetal WP$_2$
Creators: name: van Delft, Maarten R.
name: Wang, Yaxian
name: Putzke, Carsten
name: Oswald, Jacopo
name: Varnavides, Georgios
name: Garcia, Christina A. C.
name: Guo, Chunyu
name: Schmid, Heinz
name: Süss, Vicky
name: Borrmann, Horst
name: Diaz, Jonas
name: Sun, Yan
name: Felser, Claudia
name: Gotsmann, Bernd
name: Narang, Prineha
name: Moll, Philip J. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: As conductors in electronic applications shrink, microscopic conduction processes lead to strong deviations from Ohm's law. Depending on the length scales of momentum conserving ($l_{MC}$) and relaxing ($l_{MR}$) electron scattering, and the device size ($d$), current flows may shift from ohmic to ballistic to hydrodynamic regimes and more exotic mixtures thereof. So far, an in situ, in-operando methodology to obtain these parameters self-consistently within a micro/nanodevice, and thereby identify its conduction regime, is critically lacking. In this context, we exploit Sondheimer oscillations, semi-classical magnetoresistance oscillations due to helical electronic motion, as a method to obtain $l_{MR}$ in micro-devices even when $l_{MR}\gg d$. This gives information on the bulk $l_{MR}$ complementary to quantum oscillations, which are sensitive to all scattering processes. We extract $l_{MR}$ from the Sondheimer amplitude in the topological semi-metal WP$_2$, at elevated temperatures up to $T\sim 50$~K, in a range most relevant for hydrodynamic transport phenomena. Our data on micrometer-sized devices are in excellent agreement with experimental reports of the large bulk $l_{MR}$ and thus confirm that WP$_2$ can be microfabricated without degradation. Indeed, the measured scattering rates match well with those of theoretically predicted electron-phonon scattering, thus supporting the notion of strong momentum exchange between electrons and phonons in WP$_2$ at these temperatures. These results conclusively establish Sondheimer oscillations as a quantitative probe of $l_{MR}$ in micro-devices in studying non-ohmic electron flow.
description: 14 pages with 4 figures
DS-UI: Dual-Supervised Mixture of Gaussian Mixture Models for Uncertainty Inference
Creators: name: Xie, Jiyang
name: Ma, Zhanyu
name: Xue, Jing-Hao
name: Zhang, Guoqiang
name: Guo, Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: This paper proposes a dual-supervised uncertainty inference (DS-UI) framework for improving Bayesian estimation-based uncertainty inference (UI) in deep neural network (DNN)-based image recognition. In the DS-UI, we combine the classifier of a DNN, i.e., the last fully-connected (FC) layer, with a mixture of Gaussian mixture models (MoGMM) to obtain an MoGMM-FC layer. Unlike existing UI methods for DNNs, which only calculate the means or modes of the DNN outputs' distributions, the proposed MoGMM-FC layer acts as a probabilistic interpreter for the features that are inputs of the classifier to directly calculate the probability density of them for the DS-UI. In addition, we propose a dual-supervised stochastic gradient-based variational Bayes (DS-SGVB) algorithm for the MoGMM-FC layer optimization. Unlike conventional SGVB and optimization algorithms in other UI methods, the DS-SGVB not only models the samples in the specific class for each Gaussian mixture model (GMM) in the MoGMM, but also considers the negative samples from other classes for the GMM to reduce the intra-class distances and enlarge the inter-class margins simultaneously for enhancing the learning ability of the MoGMM-FC layer in the DS-UI. Experimental results show the DS-UI outperforms the state-of-the-art UI methods in misclassification detection. We further evaluate the DS-UI in open-set out-of-domain/-distribution detection and find statistically significant improvements. Visualizations of the feature spaces demonstrate the superiority of the DS-UI.
Opinion Mining in Higher Education: A Corpus-Based Approach (Supplementary material)
Creators: name: Grljevic, Olivera
name: Bošnjak, Zita
name: Kovačević, Aleksandar
Publisher: name: figshare
Year: 2020
Subjects: classificationCode: 460206
subject: Knowledge representation and reasoning
classificationCode: 460208
subject: Natural language processing
classificationCode: 390303
subject: Higher education
classificationCode: 460308
subject: Pattern recognition
classificationCode: 460502
subject: Data mining and knowledge discovery

description: Document represents supplementary material of the paper entitled "Opinion Mining in Higher Education: A Corpus-Based Approach" published in Enterprise Information System, special issue The Artificial Intelligence-enabled Enterprise Information Systems. It summarizes statistical and linguistic analysis of annotated corpus in domain of online reviews of higher education. Linguistic and statistical analysis were performed in order to provide an in-depth insight into the structure of the corpus. Our detail observations are given in this document.
Jogos digitais, carnavalização e antropofagia: um estudo sobre as produções paródicas do CyberGamba
Creators: name: Ferreira, Luiz Carlos de Oliveira
Publisher: name: Zenodo
Year: 2021
Subjects: Jogos Digitais
Carnavalização
Antropofagia

description: Esta dissertação investiga a produção de jogos digitais paródicos realizados pela desenvolvedora CyberGamba e suas relações possíveis com a carnavalização e o movimento antropofágico. A produtora paulista criou uma série de jogos digitais se apropriando do universo do programa televisivo Chaves entrelaçado a outras obras desenvolvidas pela indústria de jogos digitais. A pesquisa presente é estruturada da seguinte maneira: inicialmente, são abordados, teoricamente, os jogos digitais e as suas dinâmicas de criação e modificação; a seção seguinte é dedicada aos conceitos de carnavalização, aproximando-os à antropofagia e contextualizando a produção de CyberGamba. Por último, analisa-se a produção da desenvolvedora e investiga-se a polifonia estabelecida entre as obras examinadas. A estratégia metodológica de um estudo de caso em jogos digitais seguiu em consonância com os trabalhos de Robert Yin e Espen Aarseth, colaborando com o plano abordado na presente pesquisa e contribuindo para as análises não lineares das obras levantadas. Por fim, as produções paulistas mostraram-se objetos de pesquisa carnavalizados, estruturando novos diálogos, clarificando potências e desvelando problematizações e tensões oriundas da polifonia realizada.
Internal structure of molecular gas in a main sequence galaxy with a UV clump at z = 1.45
Creators: name: Ushio, Kaito
name: Ohta, Kouji
name: Maeda, Fumiya
name: Hatsukade, Bunyo
name: Yabe, Kiyoto
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results of sub-arcsec ALMA observations of CO(2-1) and CO(5-4) toward a massive main sequence galaxy at z = 1.45 in the SXDS/UDS field, aiming at examining the internal distribution and properties of molecular gas in the galaxy. Our target galaxy consists of the bulge and disk, and has a UV clump in the HST images. The CO emission lines are clearly detected and the CO(5-4)/CO(2-1) flux ratio (R_52) is ~1, similar to that of the Milky Way. Assuming a metallicity dependent CO-toH_2 conversion factor and a CO(2-1)/CO(1-0) flux ratio of 2 (the Milky Way value), the molecular gas mass and the gas mass fraction (f_gas = molecular gas mass / (molecular gas mass + stellar mass)) are estimated to be ~1.5x10^11 M_Sun and ~0.55, respectively. We find that R_52 peak coincides with the position of the UV clump and its value is approximately two times higher than the galactic average. This result implies high gas density and/or high temperature in the UV clump, which qualitatively agrees with a numerical simulation of a clumpy galaxy. The CO(2-1) distribution is well represented by a rotating disk model and its half-light radius is ~2.3 kpc. Compared to the stellar distribution, the molecular gas is more concentrated in the central region of the galaxy. We also find that f_gas decreases from ~0.6 at the galactic center to ~0.2 at 3xhalf-light radius, indicating that the molecular gas is distributed in more central region of the galaxy than stars and seems to associate with the bulge rather than the stellar disk.
description: 14 pages, 10 figures, 4 tables; Accepted for publication in ApJ
A Study of the Optical Properties of a ZnCdSe/ZnCdMgSe Quantum Well Infrared Photodetector (QWIP)
Creators: name: Dixon, Jared Nigel
Publisher: name: Maryland Shared Open Access Repository
Year: 2014

description: The use of II-VI materials has shown great promise in the fabrication of quantum cascade (QC) devices. This project investigates the optical properties of a molecular beam epitaxy (MBE) grown II-VI ZnCdSe/ZnCdMgSe quantum well infrared photodetector (QWIP). Through temperature dependent photoluminescence measurements, we are able to determine that the QWIP has a strong photoluminescence signal and was grown in optimal conditions. This project also attempts to measure the carrier lifetime of this particular QWIP using blue (400-nm) 100-femtosecond (fs) light pulses.
CO Multi-line Imaging of Nearby Galaxies (COMING). IX. $^{12}$CO($J$=2-1)/$^{12}$CO($J$=1-0) line ratio on kiloparsec scales
Creators: name: Yajima, Yoshiyuki
name: Sorai, Kazuo
name: Miyamoto, Yusuke
name: Muraoka, Kazuyuki
name: Kuno, Nario
name: Kaneko, Hiroyuki
name: Takeuchi, Tsutomu T.
name: Yasuda, Atsushi
name: Tanaka, Takahiro
name: Morokuma-Matsui, Kana
name: Kobayashi, Masato I. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: While molecular gas mass is usually derived from $^{12}$CO($J$=1-0) - the most fundamental line to explore molecular gas - it is often derived from $^{12}$CO($J$=2-1) assuming a constant $^{12}$CO($J$=2-1)/$^{12}$CO($J$=1-0) line ratio ($R_{2/1}$). We present variations of $R_{2/1}$ and effects of the assumption that $R_{2/1}$ is a constant in 24 nearby galaxies using $^{12}$CO data obtained with the Nobeyama 45-m radio telescope and IRAM 30-m telescope. The median of $R_{2/1}$ for all galaxies is 0.61, and the weighted mean of $R_{2/1}$ by $^{12}$CO($J$=1-0) integrated-intensity is 0.66 with a standard deviation of 0.19. The radial variation of $R_{2/1}$ shows that it is high (~0.8) in the inner ~1 kpc while its median in disks is nearly constant at 0.60 when all galaxies are compiled. In the case that the constant $R_{2/1}$ of 0.7 is adopted, we found that the total molecular gas mass derived from $^{12}$CO($J$=2-1) is underestimated/overestimated by ~20%, and at most by 35%. The scatter of a molecular gas surface density within each galaxy becomes larger by ~30%, and at most by 120%. Indices of the spatially resolved Kennicutt-Schmidt relation by $^{12}$CO($J$=2-1) are underestimated by 10-20%, at most 39% in 17 out of 24 galaxies. $R_{2/1}$ has good positive correlations with star-formation rate and infrared color, and a negative correlation with molecular gas depletion time. There is a clear tendency of increasing $R_{2/1}$ with increasing kinetic temperature ($T_{\rm kin}$). Further, we found that not only $T_{\rm kin}$ but also pressure of molecular gas is important to understand variations of $R_{2/1}$. Special considerations should be made when discussing molecular gas mass and molecular gas properties inferred from $^{12}$CO($J$=2-1) instead of $^{12}$CO($J$=1-0).
description: 29 pages, 18 figures, 5 tables. Accepted for publication in PASJ. The original resolution version is available here (https://astro3.sci.hokudai.ac.jp/~radio/coming/publications/COMING_IX_org_res.pdf)
ySKILLS child-friendly summary (powerpoint presentation) - Portuguese/Português
Creators: name: ySKILLS
Publisher: name: KU Leuven: ySKILLS
Year: 2024

description: Nesta sessão, vamos discutir as competências digitais de adolescentes na Europa.

Este PowerPoint foi criado por investigadores do projeto ySKILLS. Este projeto procurou investigar o que são competências digitais e como podem influenciar o bem estar de adolescentes. Nesta sessão, vamos falar sobre estes dois temas.
title: Acute pancreatitis due to intragastric balloon compression
Creators: name: De Llano Ibisate, Loreto Ana
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Pancreas
subject: CT
subject: Ultrasound
subject: Balloon occlusion
subject: Inflammation
subject: Clinical Cases

description: Clinical History: A 30-year-old obese female with intragastric balloon implantation five months ago. She was admitted with sudden outset of abdominal pain in the left hypochondria and left flank. She did not claim nausea, vomiting, weight loss or fever. Biochemistry revealed leucocytosis, neutrophilia,  C-reactive protein, lipase and amylase increase.

description: 32 years, female
Transience of hot dust around sun-like stars
Creators: name: Wyatt, M. C.
name: Smith, R.
name: Greaves, J. S.
name: Beichman, C. A.
name: Bryden, G.
name: Lisse, C. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: There is currently debate over whether the dust content of planetary systems is stochastically regenerated or originates in planetesimal belts evolving in steady state. In this paper a simple model for the steady state evolution of debris disks due to collisions is developed and confronted with the properties of the emerging population of 7 sun-like stars that have hot dust <10AU. The model shows there is a maximum possible disk mass at a given age, since more massive primordial disks process their mass faster. The corresponding maximum dust luminosity is f_max=0.00016r^(7/3)/t_age. The majority (4/7) of the hot disks exceed this limit by >1000 and so cannot be the products of massive asteroid belts, rather the following systems must be undergoing transient events characterized by an unusually high dust content near the star: eta Corvi, HD69830, HD72905 and BD+20307. It is also shown that the hot dust cannot originate in a recent collision in an asteroid belt, since there is also a maximum rate at which collisions of sufficient magnitude to reproduce a given dust luminosity can occur. Further it is shown that the planetesimal belt feeding the dust in these systems must be located further from the star than the dust, typically at >2AU. Other notable properties of the 4 hot dust systems are: two also have a planetesimal belt at >10AU (eta Corvi and HD72905); one has 3 Neptune mass planets at <1AU (HD69830); all exhibit strong silicate features in the mid-IR. We consider the most likely origin for the dust in these systems to be a dynamical instability which scattered planetesimals inwards from a more distant planetesimal belt in an event akin to the Late Heavy Bombardment in our own system, the dust being released from such planetesimals in collisions and possibly also sublimation.
description: 16 pages, accepted by ApJ, removed HD128400 as hot dust candidate
title: Partial malrotation with incomplete annular pancreas, midgut volvulus and Superior mesenteric artery syndrome
Creators: name: Prasad, Niharika
Publisher: name: EURORAD
Year: 2020
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Anatomy
subject: Arteries / Aorta
subject: CT
subject: Surgery
subject: Congenital
subject: Clinical Cases

description: Clinical History: A 44-year male presented with few episodes of non-bilious vomiting since one week. It was accompanied by chest pain and breathlessness. He consumed alcohol weekly on a regular basis. There was no history of altered bowel habits, fever, weight loss or hemoptysis. There was no trauma or surgery in the past. General clinical examination was normal.

description: 44 years, male