cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimating the mass of galactic components using machine learning algorithms
Creators: name: Sanchez, Jessica N. Lopez
name: Villa, Erick Munive
name: Lopez, Ana A. Avilez
name: Bravo, Oscar M. Martinez
Publisher: name: arXiv
Year: 2024
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The estimation of the bulge and disk massses, the main baryonic components of a galaxy, can be performed using various approaches, but their implementation tend to be challenging as they often rely on strong assumptions about either the baryon dynamics or the dark matter model. In this work, we present an alternative method for predicting the masses of galactic components, including the disk, bulge, stellar and total mass, using a set of machine learning algorithms: KNN-neighbours (KNN), Linear Regression (LR), Random Forest (RF) and Neural Network (NN). The rest-frame absolute magnitudes in the ugriz-photometric system were selected as input features, and the training was performed using a sample of spiral galaxies hosting a bulge from Guo's mock catalogue \citep{Guo-Catalog} derived from the Millennium simulation. In general, all the algorithms provide good predictions for the galaxy's mass components ranging from $10^9\,M_\odot$ to $10^{11}\,M_\odot$, corresponding to the central region of the training mass domain; however, the NN give rise to the most precise predictions in comparison to other methods. Additionally, to test the performance of the NN architecture, we used a sample of observed galaxies from the SDSS survey whose mass components are known. We found that the NN can predict the luminous masses of disk-dominant galaxies within the same range of magnitudes that for the synthetic sample up to a $99\%$ level of confidence, while mass components of galaxies hosting larger bulges are well predicted up to $95\%$ level of confidence. The NN algorithm can also bring up scaling relations between masses of different components and magnitudes.
description: 13 pages, 5 figures and 1 table. Matches published version
The effects of muscle belly vibration at varying muscle lengths on corticospinal excitability: a TMS study
Creators: name: Lane, Michael David
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Neuroscience
subject: Neurophysiology
subject: Vibration
subject: Proprioception

description: The application of vibration to a muscle is known to activate its muscle spindle receptors; the same receptors that are activated when the muscle is lengthened. Both muscle length and vibration are known to affect corticospinal excitability. However, their combined effects on corticospinal excitability have not been established. Thus, single pulse transcranial magnetic stimulation was applied before and after first dorsal interosseous muscle vibration at four different muscle lengths. Post-vibration motor evoked potentials were significantly higher and tonic vibration reflexes were elicited at the longest muscle length condition. As both muscle length and vibration are known to increase muscle spindle activation, the current results suggest increased corticospinal excitability when these conditions are combined may be due to increased spindle activity. More research is needed to further understand the mechanisms within the corticospinal pathway.
Deep Low-Frequency Radio Observations of the NOAO Bootes Field: I. Data Reduction and Catalog Construction
Creators: name: Intema, H. T.
name: van Weeren, R. J.
name: Rottgering, H. J. A.
name: Lal, D. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this article we present deep, high-resolution radio interferometric observations at 153 MHz to complement the extensively studied NOAO Bootes field. We provide a description of the observations, data reduction and source catalog construction. From our single pointing GMRT observation of ~12 hours we obtain a high-resolution (26" x 22") image of ~11.3 square degrees, fully covering the Bootes field region and beyond. The image has a central noise level of ~1.0 mJy/beam, which rises to 2.0-2.5 mJy/beam at the field edge, placing it amongst the deepest ~150 MHz surveys to date. The catalog of 598 extracted sources is estimated to be ~92 percent complete for >10 mJy sources, while the estimated contamination with false detections is <1 percent. The low RMS position uncertainty of 1.24" facilitates accurate matching against catalogs at optical, infrared and other wavelengths. Differential source counts are determined down to
description: 14 pages, 7 figures. Accepted for publication by A&A. Source catalog will be available from CDS soon
title: Using a socioecologial approach to explore the integration of exercise physiologists into primary healthcare teams in Newfoundland and Labrador, Canada
Creators: name: Ryan, Jared
Publisher: name: Memorial University of Newfoundland
Year: 2019

description: Limited research has explored the integration of Clinical Exercise Physiologists (CEPs) into primary healthcare in Canada. As part of a clinical exercise referral program at Memorial University, graduate students recognized as CEPs participated in four month placements at local family medicine clinics. This thesis aims to explore the experiences of CEPs and physicians during the integration of CEPs into healthcare teams and identify challenges and opportunities that could impact broader implementation of this referral program. In this qualitative study, four CEPs and five physicians participated in semi-structured individual interviews designed to explore their experiences with the referral program using a Socio-Ecological Model. Four main themes emerged from the data: (1) CEP-led advocacy for exercise referral in healthcare, (2) gaps in training and regulation of CEPs, (3) unclear role for exercise professionals within healthcare, and (4) policy and organizational changes to improve exercise referral. The findings of this study provide an understanding of the current challenges and opportunities of integrating CEPs into a primary healthcare team, and will help to guide efforts to expand multidisciplinary healthcare in Newfoundland and Labrador.
Redubs in Basque Public Television: Western Films as a Case in Point
Creators: name: Cabanillas, Candelas
Publisher: name: Status Quaestionis
Year: 2019

description: Redubs represent an unparalleled opportunity to analyse the divergences in different translations of one and the same source text. This study investigates the different strategies adopted by audiovisual translators of the same original film within the framework of the Spanish dubbing industry. In order to do this, various issues will be looked at. Firstly, cultural references, which typically pose a challenge to translators. Likewise, the choice between formal versus informal forms of address in Spanish is also fraught with difficulties, as opting for one or the other will have an impact on the way power relations are depicted to the target audience. Additionally, the presence of taboo words and offensive language and how these are transferred into the target language is also examined. The study shows that there is a strong tendency towards levelling out or omitting any instances of substandard language. Finally, the oral features in the original version seem to invariably undergo a standardization process that, again, contributes to reducing the linguistic variation present in the source text. Therefore, the connotative meaning of the text seems to be neglected, to a greater or lesser extent, during the translation process.
description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
Pressure effects on the electronic structure and magnetic properties of infinite-layer nickelates
Creators: name: Sharma, Shekhar
name: Jung, Myung-Chul
name: LaBollita, Harrison
name: Botana, Antia S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Motivated by the discovery of superconductivity in infinite-layer nickelates RNiO$_2$ (R= rare-earth), and the subsequent enhancement of their T$_c$ with pressure, we investigate the evolution of the electronic structure and magnetic properties of this family of materials via first-principles calculations employing hydrostatic and chemical pressure as tuning knobs. Overall, our analysis shows that pressure tends to increase the R-$5d$ self-doping effect, as well as the Ni-$d _{x^{2}-y^{2}}$ bandwidth, the $e_g$ energy splitting, the charge transfer energy, and the superexchange ($J$). Using the energy scale of $J$ as a predictor of superconducting tendencies, we anticipate that pressure can indeed be a feasible means to further increase the T$_c$ in this family of materials.
description: 12 pages, 11 figures
Hard X-ray and UV Observations of the 2005 January 15 Two-ribbon Flare
Creators: name: Cheng, J. X.
name: Kerr, G.
name: Qiu, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, we present comprehensive analysis of a two-ribbon flare observed in UV 1600Å by Transition Region and Coronal Explorer and in HXRs by Reuven Ramaty High Energy Solar Spectroscopic Imager. HXR (25-100 keV) imaging observations show two kernels of size (FWHM) 15?? moving along the two UV ribbons. We find the following results. (1) UV brightening is substantially enhanced wherever and whenever the compact HXR kernel is passing, and during the HXR transit across a certain region, the UV count light curve in that region is temporally correlated with the HXR total flux light curve. After the passage of the HXR kernel, the UV light curve exhibits smooth monotonical decay. (2)We measure the apparent motion speed of the HXR sources and UV ribbon fronts, and decompose the motion into parallel and perpendicular motions with respect to the magnetic polarity inversion line (PIL). It is found that HXR kernels and UV fronts exhibit similar apparent motion patterns and speeds. The parallel motion dominates during the rise of the HXR emission, and the perpendicular motion starts and dominates at the HXR peak, the apparent motion speed being 10-40 km s-1. (3) We also find that UV emission is characterized by a rapid rise correlated with HXRs, followed by a long decay on timescales of 15-30 minutes. The above analysis provides evidence that UV brightening is primarily caused by beam heating, which also produces thick-target HXR emission. The thermal origin of UV emission cannot be excluded, but would produce weaker heating by one order of magnitude. The extended UV ribbons in this event are most likely a result of sequential reconnection along the PIL, which produces individual flux tubes (post-flare loops), subsequent non-thermal energy release and heating in these flux tubes, and then the very long cooling time of the transition region at the feet of these flux tubes.
description: 8 figures
Archival Resources and Uncertainties in Film Retranslation Research
Creators: name: Zanotti, Serenella
Publisher: name: Status Quaestionis
Year: 2019

description: This article addresses some of the issues relevant to audiovisual retranslation with a focus on film redubs, a vast though still largely underexplored phenomenon that merits specific investigation. Redubbing is an umbrella term which encompasses translation and adaptation practices ranging from mere re-acting of a previously translated dubbing script, to slight revision, to completely new translating (Chaume 2007; Zanotti 2015). The present contribution aims to illustrate what archival resources are available for scholars wishing to pursue research on film retranslation and the specific problems that arise in dealing with redubs when considered from a historical and archival perspective. A case study is presented, focusing on For Whom the Bell Tolls (1943), a classic Hollywood romance-at-war tale which was dubbed at least three times for distribution in Italy.
description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
Role of galectin-1 in sensory neuron development and peripheral nerve repair
Creators: name: Gaudet, Andrew David
Publisher: name: University of British Columbia
Year: 2010

description: In comparison to adult central nervous system (CNS) axons, peripheral nervous system (PNS) axons have a high propensity for regrowth following injury. The PNS axon’s capacity to regenerate depends on an effective response within the neuron itself, combined with a supportive environment maintained by cells surrounding the axon. Unfortunately, successful reconnection of peripheral axons with appropriate targets is hampered by discontinuities associated with injury and by a decreased growth response over time. Studying strategies that improve peripheral nerve repair could enhance functional outcomes following peripheral nerve injury (PNI), and might provide insight for CNS repair. The small protein galectin-1 (Gal1) is required for developmental targeting of specific olfactory axons and promotes peripheral axon regeneration. Despite this, Gal1’s role in sensory axon development and regeneration is not well-defined. In this dissertation, I explore how Gal1 affects developmental and regenerative axon growth. Using mice lacking Gal1 (Lgals1-/-), I show that Gal1 is required for proper targeting of central axons of small-diameter, nociceptive dorsal root ganglion (DRG) neurons. Interestingly, Lgals1-/- mice had corresponding deficits in behavioural responses to noxious stimuli. Next, I characterize the regulation of Gal1 in DRG neurons and their environment following PNI and dorsal root injury (DRI). DRG neurons mount a robust regenerative response following injury of their peripheral, but not central branch. Neuronal Gal1 was upregulated after PNI, but not DRI. In addition, Gal1 expression in the regrowing axon’s environment correlated with the permissiveness of that environment. I then examine whether Gal1 promotes axonal regeneration through mechanisms intrinsic and/or extrinsic to the injured neuron. Gal1 did not affect DRG neurons’ intrinsic growth state: Lgals1-/- neurons did not display abnormal neurite outgrowth, and exogenous oxidized Gal1 (Gal1/Ox) did not affect neurite outgrowth. Gal1 does affect the response of non-neuronal cells. I show that Gal1 promotes accumulation of immune cells called macrophages following PNI. Injection of Gal1-specific antibodies attenuated typical PNI-induced accumulation of macrophages; conversely, Gal1/Ox injection into uninjured nerves facilitated macrophage accumulation in wild-type mice. My data suggest that Gal1 does not elicit axon growth directly; rather, Gal1 likely promotes axon regeneration indirectly by enhancing PNI-induced macrophage accumulation.
Outcome and Resource Use of Patients with Liver Disease: Analysis of Chinese Electronic Medical Records
Creators: name: Xu, Yuan
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Biophysics--Medical
subject: Epidemiology
subject: Health Care Management
subject: electronic medical records
subject: data extraction
subject: risk adjustment method
subject: patient cost-sharing
subject: liver disease

description: Researches aiming to improve health care quality, such as the outcome studies of liver diseases, require large databases and rich case mix information to incorporate severity assessment and risk adjustment in order to generate robust results. Researchers worldwide have recognized the potential value of electronic medical record (EMR) and tremendous efforts are underway to advance outcome research using EMR. Chinese EMR provides us a unique chance for analysis of the outcome and resource use of liver disease given the high prevalence of liver disease and widely-used EMR in China. The aim of this thesis was to analyze the outcome and resource use of patients with liver disease through appropriate risk adjustment using information extracted from Chinese EMR. Three studies were conducted to achieve the aim of this thesis. The first study was to develop and validate an EMR data extraction method to define clinical conditions, including liver diseases, comorbidities, and treatments. The research from this initial study demonstrated that the data extraction method had high validity and had the potential to be applied to other Chinese EMRs following our framework. The second study aimed to compare statistical performance of the commonly used risk adjustment methods for liver diseases. The study concluded that liver-specific severity scoring methods outperformed the comorbidity methods in predicting in-hospital mortality using a large Chinese EMR database. Combining severity and comorbidity scoring assessments could improve the risk adjustment performance. The third study examined the impact of financial factors on outcome and healthcare resource use. We tested the effect of patient’s cost sharing (reimbursement ratio) on in-hospital mortality, hospital length of stay, total and medication costs in hospital, and use of major procedures after controlling for potential confounding variables. An association was found between the cost-sharing model and healthcare resource use and cost. This research has proposed a validated data extraction method for Chinese EMR, provided evidence for appropriate implementation of common risk adjustment methods in analysis of outcome for liver disease, and offered us insight into the impact of financial incentives on health utilization, cost, and outcome.
Retranslation as Resubtitling. The Case Study of Federico Fellini’s La Strada
Creators: name: Raffi, Francesca
Publisher: name: Status Quaestionis
Year: 2019

description: While retranslation in the literary domain is “usually regarded as a positive phenomenon” (Tahir-Gür.ağlar 2009: 233), retranslation within the context of audiovisual products tends to be either negatively received (Zanotti 2015: 110) or neglected (O’Sullivan 2018: 269). Retranslation in the form of resubtitling, in particular, (i.e. the production of a new subtitled version of the same audiovisual text) has not attracted considerable attention in audiovisual translation studies, since “resubtitling is seen as inevitable and is hardly ever noticed or remarked upon” (Zanotti 2015: 111). Indeed, very little research has been conducted from a diachronic perspective “to see how subtitling was done in the past, and how it is done nowadays” (Díaz Cintas 2004:65). The present paper aims to address the issue of resubtitling in the audiovisual field from a diachronic perspective using the case study of an Italian film as an empirical basis: two sets of retranslated English subtitles produced for re-releases of Fellini’s La Strada (1954), 37 years apart, will be analysed according to a two-level analytical framework, technical and translational. The study will show that, while major improvements can be observed on a technical level, the more modern retranslation departs farther from the original, with respect to the older subtitles. Thus, the notion of ‘retranslation as improvement’ is questioned.
description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
Orange Is the New Black. Popularizing gender and sexual identities
Creators: name: Zottola, Angela
Publisher: name: Status Quaestionis
Year: 2019

description: The Netflix series Orange is the New Black (OITNB) was released in 2013, and its seventh season is now in production. It narrates the story of Litchfield Women’s Penitentiary and of its new inmate Piper Chapman. The storytelling goes beyond the main protagonist, presenting a variety of characters and thus a variety of female gender and sexual identities. This paper aims at investigating the series at the level of remediation and translation and explores the importance of these practices as forms of popularization. The first part of the analysis will look at the way in which the original memoir is remediated into the TV series. Secondly, it will focus on the linguistic choices of the original English dialogues and their Italian dubbed and subtitled versions. Lastly, starting from the central role that gender and sexual identities play in the TV series, the investigation will discuss the function of translation as a form of popularization of issues related to the phenomena.
description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
(Re)Translating Culture-Bound Elements in Gomorrah – The Series: A Corpus-Based Investigation into Relocated Identities
Creators: name: Fruttaldo, Antonio
Publisher: name: Status Quaestionis
Year: 2019

description: The following investigation analyses the way in which Gomorrah – The Series has been adapted for an international audience. In particular, some of the processes that have brought a local reality into a glocal context will be analysed, focusing on how culturebound elements are rendered in (re)translation. More specifically, the following study uses Corpus Linguistics methodologies in order to look at the specific linguistic patterns that can be highlighted in the construction through subtitling of a given representation of the reality in which the TV series is set and the characters are immersed. The following contribution, therefore, wants to investigate to what extent (in the subtitles) the translation into Italian of the Neapolitan script of Gomorrah – The Series and its (re)translation into English contribute to the transcultural remediation of the reality construction process enacted in the translation of this AVT product. This will confirm some of the observations made in previous studies on other forms of the transmediation of the original exposé by Roberto Saviano (2006).
description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
An Italian Crime Series in English. The Dubbing and Subtitling of Suburra
Creators: name: Sandrelli, Annalisa
Publisher: name: Status Quaestionis
Year: 2019

description: In recent years, the European AVT landscape has changed dramatically, as a result of technological innovations that have made it possible for viewers to select the language version they prefer (dubbed or subtitled) when watching audiovisual products on TV or on web-based streaming services. This has led to greater demand for subtitles in dubbing countries and increasing curiosity for dubbing in subtitling countries. The present paper presents a small-scale experiment on the reception of the Italian crime TV series Suburra in an English dubbed and a subtitled version. A questionnaire was developed in order to elicit information from 19 subjects on both their comprehension and enjoyment of 4 clips taken from the series. Although a preference for the subtitled version has emerged in our results, the English dubbed version was appreciated for its quality, for allowing viewers more time to watch the images and for providing an ‘easier’, more relaxed viewing mode. This small-scale case study seems to indicate that there might be a niche in the English-speaking audiovisual market for dubbed foreign language TV series.
description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
Book Review: Deane-Cox, Sharon. 2016. Retranslation: Translation, Literature and Reinterpretation [2014]. London and New York: Bloomsbury Academic, pp. 210, $35.96. ISBN: 9781474275477.
Creators: name: Petrucci, Angelica
Publisher: name: Status Quaestionis
Year: 2019

description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
Feature Selection for Generator Excitation Neurocontroller Development Using Filter Technique
Creators: name: Abro, Abdul Ghani
name: Saleh, Junita Mohamad
Publisher: name: arXiv
Year: 2012
Subjects: subject: Systems and Control (eess.SY)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Essentially, motive behind using control system is to generate suitable control signal for yielding desired response of a physical process. Control of synchronous generator has always remained very critical in power system operation and control. For certain well known reasons power generators are normally operated well below their steady state stability limit. This raises demand for efficient and fast controllers. Artificial intelligence has been reported to give revolutionary outcomes in the field of control engineering. Artificial Neural Network (ANN), a branch of artificial intelligence has been used for nonlinear and adaptive control, utilizing its inherent observability. The overall performance of neurocontroller is dependent upon input features too. Selecting optimum features to train a neurocontroller optimally is very critical. Both quality and size of data are of equal importance for better performance. In this work filter technique is employed to select independent factors for ANN training.
description: 10-Pages, 10-Figures, 8-Tables, International Journal of Computer Science Issues, Vol. 8, Issue 5, No 3, September 2011
He II Lyβ Gunn-Peterson Absorption: New HST Observations, and Theoretical Expectations
Creators: name: Syphers, David
name: Anderson, Scott F.
name: Zheng, Wei
name: Smith, Britton
name: Pieri, Matthew
name: Kriss, Gerard A.
name: Meiksin, Avery
name: Schneider, Donald P.
name: Shull, J. Michael
name: York, Donald G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Observations of He II Lyα Gunn-Peterson troughs have proved to be a valuable probe of the epoch of helium reionization at z~3. Since this optical depth can become unmeasurably large even for modest He II fractions, various alternate techniques have been proposed to push to higher redshift, and among the more promising is looking at higher order Lyman-series troughs. We here report four new observations of the He II Lyβ trough, including new data on the only sightline with a prior Lyβ observation. However, the effective optical depth ratio τ_eff,β/τ_eff,α is not simply predicted by (f_β λ_β)/(f_α λ_α)=0.16, and we analyze cosmological simulations to find that the correct ratio for helium at z~3 is ~0.35. In one case we infer τ_eff,α > 8.8, strong evidence that helium was not fully reionized at z=3.2--3.5, in agreement with previous measurements suggesting a later completion of reionization.
description: ApJ accepted. 25 pages, 3 figures, 4 tables
Collective Modes in the Loop Current Ordered Phase of Cuprates
Creators: name: He, Yan
name: Varma, C. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently two branches of weakly dispersive collective modes have been discovered in under-doped cuprates by inelastic neutron scattering. Polarization analysis reveals that the modes are magnetic excitations. They are only visible for temperatures below the transition temperature to a broken symmetry phase which was discovered earlier and their intensity increases as temperature is further decreased. The broken symmetry phase itself has symmetries consistent with ordering of orbital current loops within a unit-cell without breaking translational symmetry. In order to calculate the collective modes of such a state we add quantum terms to the Ashkin-Teller (AT) model with which the classical loop current order has been described. We derive that the mean field ground state of the quantum model is a product over all unit-cells of linear combination of the four possible classical configurations of the loop current order in each unit-cell. The collective modes are calculated by using a generalized Holstein-Primakoff boson representation of orbital moment operators and lead to three branches of gapped weakly dispersive collective modes. The experimental results are consistent with the two lower energy branches; the third mode is at a higher energy than looked for by present neutron scattering experiments and might also be over-damped. Implications of the discovery of the collective modes are discussed.
description: 16 pages, 6 figures
Biocide Resistance in Environmental Bacteria – Lesson from Triclosan Use
Creators: name: Kundan Kumar1*, Saurav Kumar2, Pritam Sarkar3 and Sutanu Karmakar4
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: Prior to the discovery of microbes, various food preservation methods were employed, often involving the use of biocides, without a clear understanding of their specific targets. Then, biocides were applied to treat wounds and eliminate contaminating microorganisms. There are several chemicals that are categorized as biocides, and these chemicals are applied in various industries like food, pharmaceuticals, hospitals, water treatment plants, personal care, textile, aquaculture, veterinary, and refineries. Recently, greater awareness and conciseness for health among individuals has led to a rise in biocide use. Contrarily, uncontrolled and excessive use of biocides may contribute to the spread of antimicrobial resistance (AMR). AMR is a condition in which microorganisms develop resistance against antimicrobial treatments, including biocides. It has become a major threat to human health and poses a challenge to the development process of new drugs.
Design and Implementation of Single Transistor Active Filters
Creators: name: Poddar, Neethila Nabanita
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Electronics and Electrical
subject: Analog filter design

description: This thesis investigates the design of single transistor second order active filters. Four general topologies are presented, each with a two port network surrounded by three impedances that form a T-network. From the topologies, four transfer functions are derived which are further simplified by replacing the two port transmission matrix parameters with those of an ideal MOS. An exhaustive MAPLE search code is used to generate all possible second order filters. The search is carried out on the four general transfer functions, considering all possible impedance combinations. Design procedures of selected filters are shown and verified by Cadence Spectre simulations and experimental measurements. Based on the single transistor second order filters, active realizations of higher order filters are explored. A fourth order bandpass Chebyshev filter and a fourth order Comb filter are presented. Simulation and experimental results of the designed filters are shown and compared with the theoretical ones.
Impact Evidence - Peer reviewed evaluative research which evidences the positive impact of the programme on business performance
Creators: name: Admin, CardiffMet
Publisher: name: Cardiff Metropolitan University
Year: 2023
Subjects: Research, science and technology policy

description: Peer reviewed evaluative research which evidences the positive impact of the programme on business performance.
 Clifton, N., Huggins, R., Morgan, B. and Thompson, P., (2015). An appropriate tool for entrepreneurial learning in SMEs? The case of the 20Twenty Leadership Programme. Local Economy, 30(5), 534-556.
 Link provided to open access version of article - fully published version available at: https://doi.org/10.1177/0269094215589310
PARTHENOS D7.4 Report on the assessment of Transnational Access activities in participating projects
Creators: name: Uiterwaal, Frank
name: Edmond, Jennifer
name: Sanz, Mikel
Publisher: name: Zenodo
Year: 2018
Subjects: deliverable

description: This Deliverable (7.4) reports on the implementation of Transnational Access (TNA) activities within participating Research Infrastructure (RI) projects (CENDARI, ARIADNE, IPERION-CH, EHRI, CLARIN) of the PARTHENOS cluster, examining how the goals underpinning TNA as a requirement for Research Infrastructures compare to the experiences of RI project management and TNA project users. Best practices for organising a TNA programme as well as barriers that RIs, project users and potential project users encountered are presented with strategic recommendations proposed for possible adjustments to TNA as an ‘enacted concept’ for all barriers at play at a policy-making level.

All PARTHENOS deliverables are available at: http://www.parthenos-project.eu/resources/projects-deliverables
Souring and Corrosion in Light Oil Producing Reservoirs and in Pipelines Transporting Light Hydrocarbon
Creators: name: Menon, Priyesh
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Environmental Microbiology

description: Microbial life can be hindered by the presence of light oil or low molecular weight hydrocarbons. The study focuses on how microorganisms survive in a diluent transporting pipeline, on souring in a field producing light oil, and on inhibition of acetate-utilizing sulfate reducing bacteria (SRB) by light oil. The study of pigging samples from a diluent transporting pipeline showed that microorganisms were able to survive in encrusted nodules where they were protected from the toxic and harsh environment and would contribute to corrosion. The study of water samples from light oil field showed that biocide, tetrakis hydroxymethyl phosphonium sulphate (THPS) could be the source of sulfate in some of these facility waters. Souring by acetate-utilizing SRB was inhibited by the presence of light oil, so in light oil producing operations once oil is removed from the water with sulfate there is a potential of souring and microbially-influenced corrosion.
CARS and SHG microscopy to follow the collagen production in living human corneal fibroblasts and mesenchymal stem cells in fibrin gel 3D cultures
Creators: name: Mortati, Leonardo
name: Divieto, Carla
name: Sassi, Maria Paola
Publisher: name: arXiv
Year: 2011
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Coherent anti-Stokes Raman scattering (CARS) microscopy is combined with second harmonic generation (SHG) technique in order to follow the early stage of stem cell differentiation within a 3D scaffold. CARS microscopy can detect lipid membranes and droplet compartments in living cells and SHG microscopy enables a strong imaging contrast for molecules with a non-centrosymmetric ordered structure like collagen. One of the first evidence of hMSCs differentiation is the formation of an extracellular matrix (ECM) where the collagen protein is its main component. This work demonstrated the multimodal CARS and SHG microscopy as a powerful non-invasive label free technique to investigate the collagen production dynamic in living cell 3D cultures. Its ability to image the cell morphology and the produced collagen distribution on a long term (4 weeks) experiment allowed to obtain important information about the cell-scaffold interaction and the ECM production. The very low limit reached in detecting collagen has permitted to map even the small amount of collagen produced by the cells in few hours of culture. This demonstrates multimodal CARS and SHG microscopy as a novel method to follow cells collagen production and cells differentiation process. In addition the experiment shows that the technique is a powerful tool for imaging of very thick sections (about 4 mm). The study conducted on mesenchymal stem cell in fibrin gel cultures confirmed that differentiation stimulus is induced by the scaffold. The monitoring of stem cell differentiation within a scaffold in a non-destructive way will be an important advantage in regenerative medicine and tissue engineering field.
description: 15 pages, 5 figures, ECONOS 2011
Dermacen Analytica: A Novel Methodology Integrating Multi-Modal Large Language Models with Machine Learning in tele-dermatology
Creators: name: Panagoulias, Dimitrios P.
name: Tsoureli-Nikita, Evridiki
name: Virvou, Maria
name: Tsihrintzis, George A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The rise of Artificial Intelligence creates great promise in the field of medical discovery, diagnostics and patient management. However, the vast complexity of all medical domains require a more complex approach that combines machine learning algorithms, classifiers, segmentation algorithms and, lately, large language models. In this paper, we describe, implement and assess an Artificial Intelligence-empowered system and methodology aimed at assisting the diagnosis process of skin lesions and other skin conditions within the field of dermatology that aims to holistically address the diagnostic process in this domain. The workflow integrates large language, transformer-based vision models and sophisticated machine learning tools. This holistic approach achieves a nuanced interpretation of dermatological conditions that simulates and facilitates a dermatologist's workflow. We assess our proposed methodology through a thorough cross-model validation technique embedded in an evaluation pipeline that utilizes publicly available medical case studies of skin conditions and relevant images. To quantitatively score the system performance, advanced machine learning and natural language processing tools are employed which focus on similarity comparison and natural language inference. Additionally, we incorporate a human expert evaluation process based on a structured checklist to further validate our results. We implemented the proposed methodology in a system which achieved approximate (weighted) scores of 0.87 for both contextual understanding and diagnostic accuracy, demonstrating the efficacy of our approach in enhancing dermatological analysis. The proposed methodology is expected to prove useful in the development of next-generation tele-dermatology applications, enhancing remote consultation capabilities and access to care, especially in underserved areas.
Predictable Interval MDPs through Entropy Regularization
Creators: name: van Zutphen, Menno
name: Delimpaltadakis, Giannis
name: Heemels, Maurice
name: Antunes, Duarte
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Regularization of control policies using entropy can be instrumental in adjusting predictability of real-world systems. Applications benefiting from such approaches range from, e.g., cybersecurity, which aims at maximal unpredictability, to human-robot interaction, where predictable behavior is highly desirable. In this paper, we consider entropy regularization for interval Markov decision processes (IMDPs). IMDPs are uncertain MDPs, where transition probabilities are only known to belong to intervals. Lately, IMDPs have gained significant popularity in the context of abstracting stochastic systems for control design. In this work, we address robust minimization of the linear combination of entropy and a standard cumulative cost in IMDPs, thereby establishing a trade-off between optimality and predictability. We show that optimal deterministic policies exist, and devise a value-iteration algorithm to compute them. The algorithm solves a number of convex programs at each step. Finally, through an illustrative example we show the benefits of penalizing entropy in IMDPs.
description: This paper has been presented at the 2024 63rd IEEE Conference on Decision and Control (CDC)
Agent Development Toolkits
Creators: name: Singh, Aarti
name: Juneja, Dimple
name: Sharma, A. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Development of agents as well as their wide usage requires good underlying infrastructure. Literature indicates scarcity of agent development tools in initial years of research which limited the exploitation of this beneficial technology. However, today a wide variety of tools are available, for developing robust infrastructure. This technical note provides a deep overview of such tools and contrasts features provided by them.
description: Contains Seven pages, 2 Figures and One table
Biophysical Characterization of Tear Film Biomimetics: Interactions of Major Polar Lipids and Proteins
Creators: name: Haley, David Alan
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Biology
subject: Biology--Molecular
subject: Biophysics
subject: Biochemistry
subject: dipalmitoylphosphatidylcholine
subject: dipalmitoylphosphatidylethanolamine
subject: palmitoylglucocerebroside
subject: palmitoylsphingomyelin
subject: dipalmitoylphosphatidylserine
subject: DPPC
subject: DPPE
subject: PSM
subject: PGC
subject: DPPS
subject: tear film
subject: lipid
subject: Langmuir
subject: BAM
subject: Brewster Angle Microscopy
subject: surface pressure
subject: eye
subject: Protein
subject: lysozyme
subject: lactoferrin
subject: tear lipocalin
subject: monolayer

description: The tear film is a multilayered structure that protects the corneal epithelium from stress and damage, and allows for clear vision. A lipid layer shields the primarily aqueous portion of the tear film from the external environment. A polar lipid layer provides an interface between the aqueous layer and a thick nonpolar lipid layer. Dipalmitoylphosphatidylcholine, dipalmitoylphosphatidylethanolamine, palmitoyl-glucocerebroside, palmitoylsphingomyelin, and dipalmitoylphosphatidylserine have been previously identified as polar lipids in whole tear samples. Langmuir trough monolayer experiments were used to assess how major tear film proteins lysozyme, lactoferrin, and tear lipocalin affect the stability and elasticity of the pure lipids and lipid mixtures. Pure lipids and lipid mixtures all displayed high stability and rigidity in the tear film surface pressure range of 20 to 35 mN/m. Biologically relevant concentrations of lysozyme and lactoferrin (> 0.2 mg/mL) appeared to fluidize a quinary lipid mixture. Low concentrations of lipocalin may destabilize polar lipid films.
Near-field optical imaging with a CdSe single nanocrystal-based active tip
Creators: name: Sonnefraud, Y.
name: Chevalier, N.
name: Motte, J. -F.
name: Huant, S.
name: Reiss, P.
name: Bleuse, J.
name: Chandezon, F.
name: Burnett, M. T.
name: Ding, W.
name: Maier, S. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report near-field scanning optical imaging with an active tip made of a single fluorescent CdSe nanocrystal attached at the apex of an optical tip. Although the images are acquired only partially because of the random blinking of the semiconductor particle, our work validates the use of such tips in ultra-high spatial resolution optical microscopy.
An invariant formula for a star product with separation of variables
Creators: name: Karabegov, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 53D55, 53C55, 70G45

description: We give an invariant formula for a star product with separation of variables on a pseudo-Kahler manifold.
description: 11 pages, minor changes made, a typo corrected
Bactrocera Macquart 1835
Creators: name: Singh, Maneesh Pal
name: Gupta, Divender
name: Hancock, David Lawrence
name: Sharma, Isha
name: Sharma, Prem Lal
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Tephritidae
Bactrocera

description: Genus Bactrocera Macquart
 Bactrocera Macquart, 1835: 452. Type species Bactrocera longicornis Macquart, 1835, by monotypy.
 Diagnosis: Abdominal tergites not fused (segments are overlapping); abdomen generally oval, rarely petiolate.
description: Published as part of Singh, Maneesh Pal, Gupta, Divender, Hancock, David Lawrence, Sharma, Isha & Sharma, Prem Lal, 2023, A new species of Bactrocera Macquart reared from Solanum khasianum Clarke in northern India and a new synonym, pp. 526-540 in Zootaxa 5380 (6) on page 527, DOI: 10.11646/zootaxa.5380.6.2, http://zenodo.org/record/10259606
Probing $H_0$ and resolving AGN disks with ultrafast photon counters
Creators: name: Dalal, Neal
name: Galanis, Marios
name: Gammie, Charles
name: Gralla, Samuel E.
name: Murray, Norman
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Intensity interferometry is a technique developed many decades ago, that has recently enjoyed a renaissance thanks in part to advances in photodetector technology. We investigate the potential for long-baseline optical intensity interferometry to observe bright, active galactic nuclei (AGN) associated with rapidly accreting supermassive black holes. We argue that realistic telescope arrays similar in area to existing Cherenkov arrays, if equipped with modern high-precision single photon detectors, can achieve a sufficiently high signal to noise ratio not only to detect distant AGN, but also to study them in great detail. We explore the science potential of such observations by considering two examples. First, we find that intensity interferometric observations of bright nearby AGN can allow detailed studies of the central accretion disks powering the AGN, allowing reconstruction of many disk properties like the radial profile. Next, we argue that intensity interferometers can spatially resolve the broad-line regions of AGN at cosmological distances, and thereby provide a geometric determination of the angular diameter distances to those AGN when combined with reverberation mapping. Since this measurement can be performed for AGN at distances of hundreds of megaparsecs, this directly measures the Hubble expansion rate $H_0$, with a precision adequate to resolve the recent Hubble tension. Finally, we speculate on future applications that would be enabled by even larger intensity interferometer arrays.