cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Remote Display Performance for Wireless Healthcare Computing
Creators: name: Lai, Albert Max
name: Nieh, Jason
name: Laine, Andrew F.
name: Starren, Justin
Publisher: name: Columbia University
Year: 2004
Subjects: Biomedical engineering

description: Organizations are beginning to recognize that health care providers are highly mobile and optimal care requires providing access to a large and dynamic body of information wherever the provider and patient are. Remote display protocols (RDP) are one way that organizations are using to deliver healthcare applications to mobile users. While many organizations have begun to use RDPs to deliver real-time access to health care information to clinicians, little formal work has been done to evaluate the performance or the effectiveness of thin-client computing with health care applications. This study examines the performance of wireless thin-client tablets with two web-based clinical applications, a text-centric, graphics-poor EMR and a graphic-rich image analysis program. The study compares the performance of two popular RDP implementations, Citrix and Microsoft Remote Desktop, with the performance of a traditional web browser in a wireless environment. For both applications, the RDPs demonstrated both higher speed and reduced bandwidth requirements than the web browser.
title: Praktikum Grundlagen der Elektrotechnik
Creators: name: Richert, Peter
name: Furchert, Peter
name: Göbel, Wolfgang
Publisher: name: FH Münster
Year: 2002
Subjects: subject: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten

description: Zu den Versuchen existieren Versuchsanleitungen, die die Grundlage zum Versuchsthema, die Geräteliste, die Versuchsschaltungen, die Meßaufgaben und die Fragen zur Auswertungen enthalten. Von den Praktikumsteilnehmern sind die theoretischen Grundlagen der einzelnen Versuche anhand der Versuchsanleitungen und ggf. weitergehender Fachliteratur jeweils vor dem Versuch selbständig zu erarbeiten. Stellt der Praktikumsleiter bei der Versuchsbesprechung fest, daß die Teilnehmer einer Gruppe die Grundlagen des aktuellen Versuches nicht beherrschen, so wird diese Gruppe i.a. von der momentanen Durchführung des Versuches ausgeschlossen und muß diesen Versuch an einem Nachholtermin durchführen.
Assessment of antimicrobial resistance throughout a wastewater treatment plant
Creators: name: Godinho, O.
name: Diogo, B. S.
name: Antunes, S. C.
name: Lage, O. M.
name: Quinteira, S.
Publisher: name: Scientific Letters
Year: 2023

description: Background: As one of the leading worldwide causes of death, infections caused by antimicrobial resistant (AMR) pathogens, represent a global health crisis that can be tackled under the One Health approach [1]. Wastewater treatment plants (WWTP) have long been considered hotspots for transmission and selection of AMR genes and, as such, surveillance of AMR in WWTP is crucial [2, 3]. Objective: In this study we aimed to isolate AMR bacteria from different sites along a WWTP, and subsequently assess their phenotypic antimicrobial susceptibility profiles, and search for different AMR genetic determinants. Methods: Wastewater samples were collected from four sites within a WWTP for the isolation of Enterobacteriaceae, Staphylococcus spp., and Enterococcus spp. and inoculated on MacConkey Agar (MCA), Mannitol Salt Agar (MSA), and Slanetz Bartley Agar (SBA), with and without supplementation with antibiotics: imipenem or ciprofloxacin in MCA, while vancomycin in MSA and SBA. Isolate’s phenotypic antimicrobial susceptibility profiles were determined by disk diffusion assay for several antibiotics (representative of different classes), according to CLSI guidelines [4]. Presence of integrons and resistance genes was assessed through PCR amplification. Results: A total of 50 bacterial isolates were obtained, of which 25 were affiliated with the genus Enterococcus. Ten isolates were affiliated with Enterobacteriaceae, and no isolate affiliated with Staphylococcus spp. were retrieved. Other isolates were affiliated with clinically relevant species such as Pseudomonas aeruginosa or Aeromonas media. Phenotypic resistances were observed in isolates from all wastewater samples, being the most common to tetracycline and ampicillin. Three isolates were resistant to three distinct classes of antimicrobials. Preliminary PCR screening results showed presence of tet(M) and class 1 integrons. Conclusions: This study reflects the importance of monitoring WWTP for presence of AMR genes, since AMR strains are found from the raw influent of the WWTP to the final effluent discharged into the environment.
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
MOBIL ILOVALAR VA RAQAMLI PLATFORMALAR ORQALI EKOLOGIK ONGLILIKNI OSHIRISH
Creators: name: Qodirov, Farrux
name: Turayeva, Sabrina
Publisher: name: Zenodo
Year: 2025

description: Ekologik ong va ekologik barqarorlikning ahamiyati so‘nggi yillarda tobora ortib bormoqda. Yashil iqtisodiyot va ekologik muammolarga qarshi kurashish sohasida jahon bo‘ylab keng qamrovli tashabbuslar amalga oshirilmoqda. Mobil ilovalar va raqamli platformalar ekologik ongni oshirishda va ijtimoiy xabardorlikni kuchaytirishda muhim vositaga aylangan. Ushbu maqolada mobil ilovalar va raqamli platformalar orqali ekologik ongni oshirishga doir yondashuvlar va amaliyotlar haqida so‘z yuritiladi.
Josephson effect between triplet superconductors through a ferromagnetic barrier of finite width
Creators: name: Bujnowski, Bogusz
name: Timm, Carsten
name: Brydon, P. M. R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Charge and spin transport in a junction involving two triplet superconductors and a ferromagnetic barrier are studied. We use Bogoliubov-de Gennes wavefunctions to construct the Green's function, from which we obtain the Josephson currents in terms of the Andreev reflection coefficients. We focus on the consequences of a finite barrier width for the occurrence of 0-πtransitions and for the spin currents, and examine the appropriateness of the common δ-function approximation for the tunneling region.
Multimodale Likelihood-Funktionen in Mischverteilungsmodellen
Creators: name: Jastrow, Malte
Publisher: name: TU Dortmund
Year: 2021
Subjects: subject: Mixture models
subject: EM-Algorithmus
subject: Globale Optimierung
subject: Clustering
subject: 310
subject: Multimodale Verteilung
subject: Maximum-Likelihood-Schätzung
subject: Globale Optimierung

description: Mischverteilungsmodelle (Mixture Models) dienen allgemein zur Anpassung zusammengesetzter Verteilungen an Daten, in denen einzelne Gruppen von Beobachtungen unterschiedlichen Verteilungen folgen. Durch die Modellierung der Gruppenzugehörigkeiten als latente Variable sind diese Modelle darüber hinaus ein populäres Verfahren zur Clusteranalyse (unüberwachtes Lernen). Dabei werden die Gruppen, denen Beobachtungen zugeordnet werden sollen, durch unterschiedlich parametrisierte Verteilungskomponenten repräsentiert. Die Verteilungsparameter der einzelnen Komponenten, sowie deren Mischungsverhältnis können mittels Maximum-Likelihood-Prinzip geschätzt werden. Wie in der Literatur beschrieben, kann die Likelihood-Funktion bereits für die Mischung zweier Normalverteilungskomponenten zahlreiche Optima aufweisen, wenn sich die zugrundeliegenden Varianzen stark unterscheiden. Im Rahmen dieser Dissertation wird das Problem der Multimodalität zunächst für Mischungen verschiedener Verteilungen durch grafische Darstellungen verdeutlicht. Anschließend wird systematisch der Einfluss der zugrundeliegenden Parameter der Mischverteilungsmodelle untersucht. Dabei ergibt sich, dass die Multimodalität maßgeblich mit dem Abstand zwischen den Varianzparametern der beiden Mischungskomponenten ansteigt. Anhand einer umfangreichen Simulationsstudie wird untersucht, wie gut der üblicherweise verwendete EM-Algorithmus Normalverteilungsmischungen mit unterschiedlicher Komplexität der Likelihood optimieren kann. Es stellt sich heraus, dass EM gegenüber allgemeinen Black-Box-Optimierungsalgorithmen, die spezielle Ansätze zum Überwinden lokaler Optima verfolgen, im Vorteil ist, da die in jedem Schritt verwendete konkrete Zuordnung der Daten zu den Verteilungskomponenten eine erhebliche Vereinfachung der Zielfunktion verursacht. Darüber hinaus wird mit der Methode der Clusterstartpunkte für EM eine für den Anwendungsfall relevante Methode vorgeschlagen, um möglichst viele lokale Optima einer multimodalen Likelihood-Funktion zu identifizieren. Dies gelingt deutlich besser als mit der häufig praktizierten Verwendung von Zufallsstartpunkten für EM und kann einen entscheidenden Beitrag zur Bewertung eines globalen Optimierungsergebnisses in der Praxis liefern.
A hybrid segmentation approach for geographic atrophy in fundus auto-fluorescence images for diagnosis of age-related macular degeneration
Creators: name: Lee, Noah
name: Laine, Andrew F.
name: Smith, R. Theodore
Publisher: name: Columbia University
Year: 2007
Subjects: Biomedical engineering

description: Fundus auto-fluorescence (FAF) images with hypo-fluorescence indicate geographic atrophy (GA) of the retinal pigment epithelium (RPE) in age-related macular degeneration (AMD). Manual quantification of GA is time consuming and prone to inter- and intra-observer variability. Automatic quantification is important for determining disease progression and facilitating clinical diagnosis of AMD. In this paper we describe a hybrid segmentation method for GA quantification by identifying hypo-fluorescent GA regions from other interfering retinal vessel structures. First, we employ background illumination correction exploiting a non-linear adaptive smoothing operator. Then, we use the level set framework to perform segmentation of hypo-fluorescent areas. Finally, we present an energy function combining morphological scale-space analysis with a geometric model-based approach to perform segmentation refinement of false positive hypo- fluorescent areas due to interfering retinal structures. The clinically apparent areas of hypo-fluorescence were drawn by an expert grader and compared on a pixel by pixel basis to our segmentation results. The mean sensitivity and specificity of the ROC analysis were 0.89 and 0.98%.
Survey of antimicrobial use during COVID-19 and environmental implications
Creators: name: De Mello-Sampayo, C.
name: Almeida, A.
name: Meisel, L.
Publisher: name: Scientific Letters
Year: 2023

description: Background: The recent COVID-19 outbreak required the use of several antimicrobials in an attempt to find effective therapies. This COVID-19demanded use of several antimicrobials likely led not only to greater loads but also to a different pattern of antimicrobials in the environment. Clear understanding of the antimicrobial environmental threat requires frequent revaluation of the problem and disseminating it among relevant audiences. Thus, identifying the pandemic most used antimicrobials likely to pose environmental threat would be valuable [1,2]. Methods: The ambulatory and the hospitals consumption patterns of antimicrobials, during the COVID-19 pandemic (2020-2021) were compared to those of 2019. A predicted risk assessment screening approach based on exposure and hazard in the surface water was conducted, combining consumption and excretion rates endpoints in five different regions of Portugal. Results: Except for antimalarials, a negative consumption trend (from -2.5% to -15.0%) was observed for all antimicrobial groups over the study period. Among all antibiotics, antiviral and antimalarial used, 22 drugs showed an increased use with potential environmental concentrations compared to the pre-covid period. The microbiological risk quotient has been assessed and most of the 22 selected substances showed an elevated to moderate risk, with an impact on all regions, with flucloxacillin, piperacillin, tazobactam, meropenem, ceftriaxone, fosfomycin, metronidazole exhibiting the most significant potential to be selected for antibiotic resistance. Conclusions: Considering the present results, it is essential to promote monitoring of the positive risk-identified antimicrobials in the waste-surface water.
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
Visible Features: Austin
Creators: name: Hart, Jonas Spencer
Publisher: name: Graduate School of The University of Texas at Austin
Year: 2014
Subjects: Austin
urban parks
landscape painting
Waller Creek
Austin Creeks
landscape architecture

description: This report is a summary of my work and research during my three years at The University of Texas at Austin. I engage the city’s impressive urban parks and new urbanist developments through my own practice of descriptive and interpretive landscape painting. Through continuous exploration of the city, research into the history of landscape painting and into the strategies of modern landscape architecture, I have learned to see more clearly the role that the visual history of depicted landscape plays in contemporary practices of landscape design and construction. This has reinforced my interest in understanding how painting as a medium plays a role in our cultural understandings of how landscapes should look and act. By experimenting with new formats and materials I continue to adapt my work to articulate a new, dynamic understanding of landscape in flux and inextricable from its human inhabitants.
Excited random walks: results, methods, open problems
Creators: name: Kosygina, Elena
name: Zerner, Martin P. W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35, 60K37, 60J80

description: We consider a class of self-interacting random walks in deterministic or random environments, known as excited random walks or cookie walks, on the d-dimensional integer lattice. The main purpose of this paper is two-fold: to give a survey of known results and some of the methods and to present several new results. The latter include functional limit theorems for transient one-dimensional excited random walks in bounded i.i.d. cookie environments as well as some zero-one laws. Several open problems are stated.
description: 37 pages, 4 figures; minor revision
Far-UV-C radiation demonstrated germicidal activity against Escherichia coli and Staphylococcus sp.
Creators: name: Sousa, M.
name: Sousa, C. Sousa
name: Vassal, M.
name: Braga, D. F. O.
name: Simões, M.
Publisher: name: Scientific Letters
Year: 2023

description: Background: Bacteria are ubiquitous microorganisms with economic and public health impacts [1, 2]. Proper disinfection of public spaces minimizes bacterial contamination, spread, and associated diseases [3, 4]. Ultraviolet radiation (UV) is an effective and inexpensive approach for bacterial control and eradication [5-7]. Objective: This study aimed to evaluate the bactericidal potential of far-UV-C (222 nm) – an irradiation technology requiring scientific validation. Methods: The bactericidal effect of far-UV-C (from 104.6 μW/cm2 to 918.0 μW/cm2; 222 nm; 1 and 5 min), against adhered cells of Escherichia coli and Staphylococcus sp., was determined. Ultrasounds (for 1 min), as well as sodium hypochlorite, N-alkyl-N,N-dimethyl-N-benzyl-ammonium chloride, pentapotassium bis (peroxymonosulfate) bis(sulfate)), and perillyl alcohol (at sub-bactericidal concentrations for 5 min) were also tested. In addition, irradiation was combined with ultrasounds and each of the four compounds. Finally, the effect of the treatment UV + ultrasound + free chlorine was assessed. The effectiveness of each treatment was evaluated through the calculation of the percentage of reduction. Results: For 1 min of exposure to UV-C, percentages of reduction were between 42% and 94% for E. coli, while for Staphylococcus sp. these percentages ranged from 30% to 91%. For 5 min of exposure to radiation, percentages of reduction were from 79% to 100% for E. coli and were between 51% and 99% for Staphylococcus sp. Interestingly, the combinations were successful: UV + ultrasound showed synergism and the combinations of UV with each compound resulted in percentages of reduction equal to 100% for E. coli and higher than 96% for Staphylococcus sp. The triple combination resulted in a percentage of reduction of 100% for both bacteria. Conclusions: Far-UV-C reduces microbial contaminations successfully. In particular, combinatorial approaches were more effective than individual treatments, making these treatments adequate for disinfecting public spaces.
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
A new observational tracer for high-density disc-like structures around B[e] supergiants
Creators: name: Aret, A.
name: Kraus, M.
name: Muratore, M. F.
name: Fernandes, M. Borges
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The disc formation mechanism of B[e] supergiants is one of the puzzling phenomena in massive star evolution. Rapid stellar rotation seems to play an important role for the non-spherically symmetric mass-loss leading to a high-density disc or ring-like structure of neutral material around these massive and luminous objects. The radial density and temperature structure as well as the kinematics within this high-density material are, however, not well studied. Based on high-resolution optical spectra of a sample of B[e] supergiants in the Magellanic Clouds we especially searched for tracers of the kinematics within their discs. Besides the well-known [O I] lines, we discovered the [Ca II] λλ7291, 7324 lines that can be used as a complementary set of disc tracers. We find that these lines originate from very high-density regions, located closer to the star than the [O I] λ5577 line-forming region. The line profiles of both the [O I] and the [Ca II] lines indicate that the discs or rings of high-density material are in Keplerian rotation. We estimate plausible ranges of disc inclination angles for the sample of B[e] supergiants and suggest that the star LHA 120-S 22 might have a spiral arm rather than a disc.
description: 10 pages, 4 figures, 5 tables
The Category of Kirchhoff Relations
Creators: name: Kalra, Amolak Ratan
Publisher: name: Science
Year: 2022
Subjects: subject: Category Theory, Quantum Computing, Electrical Circuits
subject: Computer Science

description: We define the category of Kirchhoff relations to consist of those Lagrangian relations that conserve total momentum – a condition that can also be interpreted as Kirchhoff’s current law. We study and characterize different subcategories of Kirchhoff relations and present universal sets of generators of the different subcategories of Kirchhoff relations. These generators can be interpreted as junctions of ideal wires, resistances, voltage sources and current sources
In vitro antibacterial and cytotoxic activity of Laurobasidium lauri extracts
Creators: name: Silva, L.
name: Oliveira, A. I.
name: Moreira, F.
name: Ferraz Oliveira, R.
name: Pinho, C.
Publisher: name: Scientific Letters
Year: 2023

description: Background: Plants and mushrooms have been used as medicines for many years, as a source of antibiotics, antineoplastics, among others [1]. Research have been conducted on the medicinal uses of Portuguese plants, however, the therapeutic potentials of some of these plants used in traditional medicine, has remained unexploited. Objective: This study aims to evaluate antibacterial and cytotoxic activities, in vitro, of Laurobasidium lauri, a well-known fungus used in folk medicine on Madeira Island. Methods: An experimental study was performed using two extracts (aqueous and ethanolic 55% (V/V)) of the fungus isolated and in combination with three medicinal plants (Parietaria judaica, Polygonum aviculare, and Peperomia galioides). The antibacterial activity was evaluated against Escherichia coli and Staphylococcus aureus, through disc diffusion and broth microdilution methods. Cytotoxicity was evaluated using MTT (3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide) assay. Results: Regarding the disc diffusion method E. coli was not susceptible to any of the extracts, except for the antibiotic (41.0 ± 1.0 mm). However, S. aureus, when subjected to 10 mg/ml of the ethanolic extracts of L. lauri (isolated and in combination) exhibited an inhibition with a diameter of 16,3 ± 2,5 mm and 12,0 ± 1,7 mm, respectively, when compared to the control, ciprofloxacin (24,0±1,0 mm). Also, the ethanolic extract of the isolated fungus had the best value of minimum inhibitory concentration (MIC) for S. aureus (MIC = 0.078125 mg/mL). The ethanolic extract of the fungus in combination with medicinal plants showed greater cytotoxic action on lung cancer cells A549 (IC50 = 48.3±1.0 µg/mL). Conclusions: The fungus presented cytotoxic and antibacterial potential, and the results observed may be related to some bioactive compounds (e.g., costunolide and dehydrocostuslactone, two natural sesquiterpene lactones present in Laurus trees, where the fungus grows) [2]. However, more research is needed to confirm these biological activities and mechanisms of action.
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
eDNA metabarcoding as a way to evaluate myxozoan presence and diversity in the sediment of a transboundary estuary
Creators: name: Ferreira, G.
name: Machado, A.
name: Rocha, S.
Publisher: name: Scientific Letters
Year: 2023

description: Background: Myxozoans are a diverse group of cnidarian endoparasites cosmopolitan in the aquatic environment, responsible for causing serious diseases in fish [1]. Traditional methods of detection and characterization of these parasites are very cumbersome and complex by nature [1-3]. Therefore, it is essential to implement simpler, non-destructive approaches to assess myxozoan presence and diversity, such as eDNA analysis [3]. Most eDNA-based parasitological assessments focus on water samples to indicate potential disease risk. However, Turner et al. [4] demonstrated that fish DNA is more concentrated in sediment than in water, which could also be true for myxozoan DNA. Objective: This study aimed to compare traditional methods of myxozoan detection versus a novel eDNA approach from sediment samples. Methods: Sediment was collected monthly from the three distinct stretches of the Minho River estuary, near Caminha (lower estuary), Boega (middle estuary), and Morraceira (upper estuary). Collected annelids were identified and microscopically surveyed for myxozoan infection. eDNA was extracted from the sediment samples and a nested PCR protocol targeting a variable region of the 18S rDNA (450–490 bp) was performed using metabarcoding primers [3]. Results: A total of 1,746 oligochaetes and 327 polychaetes were isolated, among which only one oligochaete collected in September from the upper estuary displayed microscopic evidence of myxozoan infection. Actinospores were identified as belonging to the sphaeractinomyxon collective group, based on morphology and 18S rDNA sequence. Conversely, eDNA metabarcoding from sediment samples revealed positive amplification throughout the sampling period, and in all three locations. Preliminary results identified amplicons with the highest genetic similarity with myxozoan 18S rDNA sequences. Conclusion: This work highlights the utility of eDNA metabarcoding of sediment samples for evaluating myxozoan presence and diversity in estuarine environments, allowing the acquisition of high-fidelity results at a faster rate and superior sensitivity than those obtained via traditional methods.
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
Four Dimensional MR Image Analysis of Dynamic Renography
Creators: name: Song, Ting
name: Lee, Vivian S.
name: Rusinek, Henry
name: Wong, Samson
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2006
Subjects: Biomedical engineering

description: A novel four dimensional image analysis approach including registration and segmentation of dynamic contrast enhanced renal MR images is presented. This integrated method is motivated by the observation of the reciprocity between registration and segmentation in 4D time-series images. Fully automated Fourier-based registration with sub-voxel accuracy and semi-automated time-series segmentation were intertwined to improve the accuracy in a multi-step fashion. We have tested our algorithm on several real patient data sets. Clinical validation showed remarkable and consistent agreement between the proposed method and manual segmentation by experts.
title: Bildverarbeitung : Verarbeitung von Bildern
Creators: name: Heinz-Georg Fehn
Publisher: name: FH Münster
Year: 2002
Subjects: subject: 004 Datenverarbeitung; Informatik

description: Das Tutorial erläutert die Elemente von Bildverarbeitungssystemen. Es befaßt sich mit den Prinzipen der Beleuchtung, Optik, Kamerasystemen und Bilderfassungskarten (Framegrabber) als Komponenten der Bildgebung und -erfassung. Weiterhin stellt sich die Bildverarbeitung als ein Gebiet der zweidimensionalen digitalen Signalverarbeitung dar. Im Verlauf des Tutorials wird daher auch auf die Grundlagen der Bilddigitalisierung und Bilddarstellung im Rechner und ihr Einfluß auf die Bildauswertung eingegangen. So kann die Verarbeitung von Bildern durch den Rechner mittels ikonischer Bildverarbeitung, also die Handhabung Bilddaten als Repräsentation von Helligkeitsinformationen, durchgeführt werden. Die Verfahren basierend auf Punktoperationen, lokale Operationen und globale Operationen z.B. zur Kontrastverbesserung, zur Rauschbefreiung oder Strukturfindung sind Methoden der ikonischen Bildanalyse. Im Rahmen des Tutorials werden die Grundlagen und Methoden der ikonischen Bildverarbeitung am Beispiel industrieller Aufgabenstellungen und Anwendungen erläutert. Die symbolische Bildverarbeitung basiert hingegen auf extrahierten Bildmerkmalen, wie z.B. Umfang, Schwerpunkt, Form etc. Ein Merkmalsvektor, gebildet aus solchen Kenngrößen stellt eine symbolische Beschreibung von Bildinhalten dar und kann z.B. zur Objektklassifikation verwendet werden.
Scoping Review of kinetic based methods for objective gait analysis in horses
Creators: name: Devolin, Alanna
name: Murari, Kartikeya
name: Ganshorn, Heather
name: Scott, W. Michael
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: Horses
Kinetic gait analysis
Objective gait analysis
Quantitative gait assessment
Objective lameness assessment
Force
Impulse
Ground reaction forces
Force measuring shoe
Force measuring treadmill
Force plate
Instrumented horseshoe

description: Background: Gait analysis for horses can be performed either subjectively or objectively. The subjective method observes horses in motion. Whereas for an objective analysis, data on specific gait parameters are collected and reviewed. Objective gait analysis can be broken down into two disciplines: kinetic and kinematic based. Kinetic methods rely on applied force(s) data and kinematic methods analyze temporal and spatial parameters of gait. Objective: To complete a scoping review of kinetic based methods used for objective gait analysis Eligibility Criteria: Any articles (peer reviewed) and conference papers (peer reviewed and published) will be included in this study. Articles must include a kinetic based means of gait analysis that has been applied to horses. Kinematic based methods of analysis and any articles with humans or other animals will be excluded. Sources of evidence: Searches will be conducted in MEDLINE, CAB Abstracts, SportDiscus, Compendex, and IEEE Xplore.
Salmonella in Portuguese autochthonous hens breeds: a One Health concern
Creators: name: Miranda, C.
name: Ribeiro, V.
name: Dantas, R.
name: Brito, N. V.
Publisher: name: Scientific Letters
Year: 2023

description: Background: The genus Salmonella is characterized as an enteric pathogen of mammals, reptiles, and birds and one of the most adapted environmental pathogens. These bacteria cause a high number of foodborne salmonellosis annually as a result of eating eggs, poultry and raw or undercooked meat contaminated with Salmonella [1,2]. Food-producing animals, in particular chickens, are considered reservoirs of this agent, associated with clinical illness and enormous risk to humans by the food chain. On the opposite, the local breeds in extensive or semi-extensive systems work to mitigate the impacts of intensive farming systems on food safety and public health, and enhance the rural economies. However, the studies on pathogen agents in local breeds are scarce [2,3]. Objective: The aim of this study was to determine the presence of Salmonella spp. in four Portuguese autochthonous chicken breeds in semi-extensive systems. Methods: A total of 87 samples of eggshells were obtained from 30 hens farms (2 to 4 samples/farm) of the following autochthonous breeds: “Pedrês Portuguesa” (n=22), “Amarela” (n=20), “Preta Lusitânica” (n=23) and “Branca” (n=22), in six different regions of Portugal during February of 2023. The Salmonella microbiological isolation was performed by the standard method recommended by ISO 6579:2017. Each sample was pre-enriched in Buffered peptone water, followed by incubation in Modified semi-solid Rappaport-Vassiliadis medium supplemented with novobiocin. From the culture obtained, selective solid media are inoculated: Chromagar Salmonella Plus agar®; Xylose lysine deoxycholate agar® and Salmonella-Sighella agar®. Results: From the four analyzed autochthonous hen breeds, no growth of characteristic Salmonella colonies was observed in the used selective solid media. Conclusions: To the best of our knowledge, this is the first study based on these autochthonous breeds, although the number of samples is limited. These preliminary results suggested that hen's eggs are not the most important vehicle of the infection by Salmonella, indicating a positive impact on animal health and public health.
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
Concept detection in longitudinal brain MR images using multi-modal cues
Creators: name: Caban, Jesus J.
name: Lee, Noah
name: Ebadollahi, Shahram
name: Laine, Andrew F.
name: Kender, John R.
Publisher: name: Columbia University
Year: 2009
Subjects: Biomedical engineering
Diagnosis--Computer programs
Supervised learning (Machine learning)
Brain--Tumors

description: Advances in medical imaging techniques and devices has resulted in increased use of imaging in monitoring disease progression in patients. However, extracting decision-enabling information from the resulting longitudinal multi-modal image sets poses a challenge. Radiologists often have to manually identify and quantify certain regions of interest in the longitudinal image sets, which bear upon the patient's condition. As the number of patients increases, the number of longitudinal multi-modal images grows, and the manual annotation and quantification of pathological concepts quickly becomes impractical. In this paper we explore how minimal annotations provided by the user at a few time points can be effectively leveraged to automatically annotate data in the entire multi-modal longitudinal image sets. In particular, we investigate the required number of annotated images per time point and across time for obtaining reasonable results for the entire image set, and what multi-modal cues can help boost the overall annotation results.
Energy and Exergy Analysis of Low-Cooling in Building by using Light-Vent Pipe
Creators: name: Ratthasak Prommas
Publisher: name: กองบริหารการวิจัย
Year: 2019
Subjects: Light-vent pipe
Energy and exergy
Ceiling heat gain
Daylight

description: Science & Technology Asia, 24, 1, 41-53
Universal Quantum Localizing Transition of a Partial Barrier in a Chaotic Sea
Creators: name: Michler, Matthias
name: Bäcker, Arnd
name: Ketzmerick, Roland
name: Stöckmann, Hans-Jürgen
name: Tomsovic, Steven
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Generic 2D Hamiltonian systems possess partial barriers in their chaotic phase space that restrict classical transport. Quantum mechanically the transport is suppressed if Planck's constant h is large compared to the classical flux, h >> Phi, such that wave packets and states are localized. In contrast, classical transport is mimicked for h << Phi. Designing a quantum map with an isolated partial barrier of controllable flux Phi is the key to investigating the transition from this form of quantum localization to mimicking classical transport. It is observed that quantum transport follows a universal transition curve as a function of the expected scaling parameter Phi/h. We find this curve to be symmetric to Phi/h=1, having a width of two orders of magnitude in Phi/h, and exhibiting no quantized steps. We establish the relevance of local coupling, improving on previous random matrix models relying on global coupling. It turns out that a phenomenological 2x2-model gives an accurate analytical description of the transition curve.
description: 5 pages, 4 figures
Interactive segmentation for geographic atrophy in retinal fundus images
Creators: name: Lee, Noah
name: Smith, R. Theodore
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2008
Subjects: Biomedical engineering
Retinal degeneration

description: Fundus auto-fluorescence (FAF) imaging is a non-invasive technique for in vivo ophthalmoscopic inspection of age-related macular degeneration (AMD), the most common cause of blindness in developed countries. Geographic atrophy (GA) is an advanced form of AMD and accounts for 12-21% of severe visual loss in this disorder. Automatic quantification of GA is important for determining disease progression and facilitating clinical diagnosis of AMD. The problem of automatic segmentation of pathological images still remains an unsolved problem. In this paper we leverage the watershed transform and generalized non-linear gradient operators for interactive segmentation and present an intuitive and simple approach for geographic atrophy segmentation. We compare our approach with the state of the art random walker algorithm for interactive segmentation using ROC statistics. Quantitative evaluation experiments on 100 FAF images show a mean sensitivity / specificity of 98.3 / 97.7% for our approach and a mean sensitivity / specificity of 88.2 / 96.6% for the random walker algorithm.
Crosstalk between keratinocytes and dermal fibroblasts modulates the release of critical wound healing factors
Creators: name: Carr, Matthew John
Publisher: name: University of British Columbia
Year: 2013

description: Epidermal-mesenchymal communication plays a critical role in cutaneous integrity during both normal and pathological wound healing processes. We have previously demonstrated that crosstalk between keratinocytes and dermal fibroblasts has the capacity to influence the expression of key extracellular matrix (ECM) components including members of the matrix metalloproteinase (MMP) and 14-3-3 protein families. In this Masters project, we hypothesized that bidirectional communication between these cell types plays a central role in regulating local expression of critical wound healing factors. To address this question, two specific objectives were accomplished. Under Objective 1, we investigated whether fibroblasts are capable of modulating the expression of keratinocyte-releasable anti-fibrogenic 14-3-3 proteins by examining the levels of four 14-3-3 family members (β, η, γ, σ) by western blot and quantitative real-time polymerase chain-reaction (qPCR). Gene analysis revealed upregulation of all four 14-3-3 isoforms of interest in co-cultured compared to mono-cultured keratinocytes. Additionally, co-cultured keratinocytes expressed significantly higher levels of intracellular 14-3-3 γ and σ proteins. Under Objective 2, we examined the impact of keratinocyte-releasable factors upon the fibroblast expression profile of key cytokines and growth factors using DNA microarray analysis. Fibroblasts co-cultured with keratinocytes demonstrated significantly upregulated colony-stimulating factor 3 (CSF3) expression, which was further verified by RT-PCR and western blot. Keratinocyte-conditioned medium (KCM) from undifferentiated keratinocytes was observed to have higher CSF3-stimulatory potential than that of differentiated cells. Partial-characterization of the CSF3-stimulatory factor(s) was achieved by treating fibroblasts with KCM subjected to thermal stability and ammonium sulfate precipitation analyses. Additionally, to investigate the CSF3-stimulatory potential of interleukin-1 (IL-1) upon fibroblasts, we utilized an IL-1 receptor antagonist (IL-1ra) and revealed that keratinocyte-releasable IL-1 may be one of the factors responsible for stimulating CSF3 expression in fibroblasts. Our studies concluded that dermal fibroblasts regulate the expression of several 14-3-3 isoforms (notably γ and σ) in keratinocytes, and conversely, that keratinocyte-releasable factors such as IL-1 modulate the expression of CSF3 in fibroblasts. These findings underline the critical nature of crosstalk between keratinocytes and fibroblasts, suggesting that bidirectional communication between these cells in vivo plays a prominent regulatory role in the cytokine production required for wound healing and maintaining a normal skin environment.
Description of sphaeractinomyxon types (Cnidaria: Myxosporea) from marine oligochaetes in the Minho River estuary and nearby coastal area
Creators: name: Araújo, C.
name: Rangel, L. F.
name: Casal, G.
name: Costa Araújo, D.
name: Rocha, S.
Publisher: name: Scientific Letters
Year: 2023

description: Background: Myxosporeans are important fish endoparasites with a complex life cycle that involves the production of actinospores in annelid hosts. More than 2,400 myxosporean species are presently known, yet only about 60 have their complete life cycle described [1]. Difficulties in the annelid sampling and examination, namely from the marine environment, and typically low prevalence of infection, hinder our knowledge of myxosporean-annelid interactions [2]. Objective: This study focused on the detection of myxosporean parasites present in the marine annelid communities of the Minho River lower estuary and nearby coastal area, seeking to unravel their biodiversity and potentially allow the clarification of new life cycles. Methods: Estuarine sediment and coastal substrates were collected monthly from “Sapal do Coura” in the Minho River lower estuary and at Moledo beach, respectively. Annelids collected from these sampling sites were microscopically examined for the detection of actinospore development. Actinospores were morphologically characterized and prepared for DNA extraction and sequencing of the small subunit ribosomal gene (18S rDNA). For annelid identification, the 16S rRNA gene of mitochondrial DNA (mtDNA) was amplified and sequenced. Sequence assembly and maximum likelihood phylogenetic analysis were performed using MEGA X. Results: Six morphologically and molecularly distinct types of sphaeractinomyxon were found infecting the coelomic cavity of marine oligochaetes belonging to the family Naididae. BLASTn revealed three of these types as novel records, one of which could be molecularly inferred as the life cycle counterpart of the mugiliform-infecting myxosporean Myxobolus labrosus. Maximum likelihood retrieved all novel sequences positioned within the monophyletic clade of mugiliform-infecting Myxobolus. Conclusions: This study expands the known diversity of sphaeractinomyxon types, reinforcing naidids as preferred hosts for these myxosporeans in marine environments. The strengthening of the correlation between sphaeractinomyxon and mugiliform-infecting Myxobolus reinforces the functionality of this actinospore morphotype in promoting transmission to mullet hosts [3].
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
Interactive Image Analysis in Age-related Macular Degeneration (AMD) and Stargardt Disease (STGD)
Creators: name: Smith, R. Theodore
name: Lee, Noah
name: Chen, Jian
name: Busuioc, Mihai
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2008
Subjects: Biomedical engineering
Image analysis
Retinal degeneration

description: The literature of the last three decades is replete with automatic methods for retinal image analysis. Acceptance has been limited due to post-processing or tuning requirements that may be just as time consuming as the original manual methods. The point of view herein is that by taking advantage of the human visual system and expert knowledge from the outset, the promised efficiencies of digital methods can be achieved in practice as well as in theory. Thus, simple labeling of regions of interest that is accepted and easily performed in a few moments by the human can provide enormous advantage to an already well-developed algorithm. Three examples are provided: drusen segmentation, image registration, and geographic atrophy segmentation, with applications to disease understanding.
Texture-Driven Coronary Artery Plaque Characterization Using Wavelet Packet Signatures
Creators: name: Katouzian, Amin
name: Baseri, Babak
name: Konofagou, Elisa E.
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2008
Subjects: Biomedical engineering
Intravascular ultrasonagraphy

description: High-frequency ultrasound transducers are being widely used to generate high resolution, real time, cross-sectional images of the coronary arteries. In this paper, we present a robust unsupervised texture-derived technique based on multi-channel wavelet frames to delineate atherosclerotic plaque compositions. The intravascular ultrasound (IVUS) signals were acquired from coronary arteries dissected from 32 diseased cadaver hearts employing 40 MHz mechanically rotating, single-element transducers. The wavelet packet representations were classified using a K- means clustering algorithm to generate IVUS-histology color maps (IV-HCMs) and categorize tissues in lipidic, fibrotic and calcified. Finally, two independent observers evaluated the results contrasting the histology images corresponding to the IV-HCMs. Our results show that the proposed algorithm may have great potential as an alternative to existing spectrum-based classification techniques.
Tidal Interactions in Merging White Dwarf Binaries
Creators: name: Piro, Anthony L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The recently discovered system J0651 is the tightest known detached white dwarf (WD) binary. Since it has not yet initiated Roche-lobe overflow, it provides a relatively clean environment for testing our understanding of tidal interactions. I investigate the tidal heating of each WD, parameterized in terms of its tidal Q parameter. Assuming that the heating can be radiated efficiently, the current luminosities are consistent with Q_1=7*10^{10} and Q_2=2*10^7, for the He and C/O WDs, respectively. Conversely, if the observed luminosities are merely from the cooling of the WDs, these estimated values of Q represent upper limits. A large Q_1 for the He WD means its spin velocity will be slower than that expected if it was tidally locked, which, since the binary is eclipsing, may be measurable via the Rossiter-McLaughlin effect. After one year, gravitational wave emission shifts the time of eclipses by 5.5 s, but tidal interactions cause the orbit to shrink more rapidly, changing the time by up to an additional 0.3 s after a year. Future eclipse timing measurements may therefore infer the degree of tidal locking.
description: Revised version accepted for publication in The Astrophysical Journal Letters. Added short discussion and estimate of the maximum possible tidal heating rate. 5 pages, 2 figures
Bayesian transduction and Markov conditional mixtures for spatiotemporal interactive segmentation
Creators: name: Lee, Noah
name: Laine, Andrew F.
name: Ebadollahi, Shahram
name: Delepaz, Robert L.
Publisher: name: Columbia University
Year: 2009
Subjects: Biomedical engineering
Bayesian statistical decision theory

description: In this paper we propose a novel transductive learning machine for spatiotemporal classification casted as an interactive segmentation problem. We present Markov conditional mixtures of naive Bayes models with spatiotemporal regularization constraints in a transductive learning and inference framework. The proposed model extends on previous work to account for non independent and identically distributed (i.i.d.) sequential data by imposing the learning and inference problem w.r.t. time. The multimodal mixture assumption on the class-conditional likelihood for each covariate feature domain in conjunction with spatiotemporal regularization constraints allow us to explain more complex distributions required for classification in multimodal longitudinal brain imagery. We evaluate the proposed algorithm on multimodal temporal MRI brain images using ROC statistics and report preliminary results.
Diagnostic methods of leishmaniosis in dogs: state-of-the-art
Creators: name: Penelas Costa, C. P.
name: Prata, J. C.
name: Cardoso, L.
name: Barroso, T. G.
Publisher: name: Scientific Letters
Year: 2023

description: Background: Canine leishmaniosis (CanL) is caused by Leishmania infantum transmitted by the bite of phlebotomine sand flies [1]. Objective: This systematic review aims at providing the most updated information about the laboratory diagnosis of leishmaniosis in dogs using traditional methods and innovative techniques. Methods: A bibliographic search was performed on 23 February 2023 in Scopus targeting all currently available literature up to 22 February 2023 using the following keywords: ("Canine leishmaniosis" OR "Leishmania" OR "Leishmaniosis in Dogs" OR "Visceral leishmaniasis" OR "cutaneous leishmaniasis" OR "leishmaniasis") AND ("traditional diagnosis" OR "biochemical profile" OR "clinical analysis" OR "complete blood count (CBC)" OR "cytology" OR "hemogram" OR "PCR" OR "serology" OR "urinalysis") AND ("innovative diagnostic techniques" OR "molecular diagnostic test" OR "rapid diagnostic tests" OR "spectroscopy POC") AND ("diagnostic performance"). Results: CanL laboratory diagnosis is traditionally carried out directly or indirectly, with methods including molecular techniques, quantitative serological methods, specific serology and also the evaluation of hematological and biochemical parameters [2]. Innovative techniques address point-of-care applications, e.g.DNA-probes based on gold nanoparticles. Conclusions: Traditional diagnostic methods vary in their simplicity of use,however, these methods require large sample volumes, which cannot always be collected from patients and may pose welfare concerns. Innovative techniques should provide high method accuracy while using low sample volumes and being reagentless, reducing costs and applying green chemistry principles.
description: Scientific Letters, Vol. 1 No. Sup 1 (2023)
title: Lokal handeln - global denken. Herausragende Diplomarbeiten des Studienjahres 1999/2000
Creators: name: Fachhochschule Münster
Publisher: name: FH Münster
Year: 2003
Subjects: subject: 330 Wirtschaft

description: Unter den 1000 Abschlussarbeiten, die jedes Jahr ander Fachhochschule Münster angefertigt werden, gilt es die herausragendsten des Jahres 1999 zu ehren. Der besonders hohe Anspruch wird dabei durch den Praxis-, Wissenschafts- und Anwendungsbezug hergestellt. Elf Diplomandinnen und Diplomanden aus den Fachbereichen der Hochschule erfahren diese besondere Ehrung.
Design and Fabrication of Deformable Microfluidic Device for the Study of Living Cells under Mechanical Solicitations
Creators: name: Hossain, Naheed
Publisher: name: กองบริหารการวิจัย
Year: 2019
Subjects: MDA-MB-231
Micro-sized deformation
PDMS

description: Science & Technology Asia, 24, 1, 54-62