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  • Open Access

    ARTICLE

    Noise Reduction in Industry Based on Virtual Instrumentation

    Radek Martinek1, Rene Jaros1, Jan Baros1, Lukas Danys1, Aleksandra Kawala-Sterniuk2, Jan Nedoma3,*, Zdenek Machacek1, Jiri Koziorek1

    CMC-Computers, Materials & Continua, Vol.69, No.1, pp. 1073-1096, 2021, DOI:10.32604/cmc.2021.017568 - 04 June 2021

    Abstract This paper discusses the reduction of background noise in an industrial environment to extend human-machine-interaction. In the Industry 4.0 era, the mass development of voice control (speech recognition) in various industrial applications is possible, especially as related to augmented reality (such as hands-free control via voice commands). As Industry 4.0 relies heavily on radiofrequency technologies, some brief insight into this problem is provided, including the Internet of things (IoT) and 5G deployment. This study was carried out in cooperation with the industrial partner Brose CZ spol. s.r.o., where sound recordings were made to produce a dataset.… More >

  • Open Access

    ARTICLE

    Italian Validation of the Healthcare Needs Scale for Youth with Congenital Heart Disease and Its Short-Form Development

    Federica Dellafiore1, Serena Francesca Flocco1, Cristina Arrigoni2, Serena Barello3, Tiziana Nania1, Maria Giovanna Russo4, Berardo Sarubbi5, Arianna Magon1, Francesco Pittella1, Massimo Chessa6, Rosario Caruso1,*

    Congenital Heart Disease, Vol.15, No.3, pp. 167-180, 2020, DOI:10.32604/CHD.2020.012438 - 15 July 2020

    Abstract Aims: This study aimed at providing an Italian short version of the ‘healthcare needs scale for youth with congenital heart disease’ (I-HNS-CHD-s), describing its construct validity and reliability. Methods: A multi-method and multi-phase design were adopted. Phase one referred to the cultural-linguistic validation of the original scale into Italian. Phase two tasted content and face validity of the Italian-translated scale. Phase three included the psychometric validation process of scale, encompassed two different steps: first cross-sectional data collection (sample A) purposed at determining the psychometric characteristics of the I-HNS-CHD-s, using an exploratory factor analysis (EFA). Then, a… More >

  • Open Access

    ARTICLE

    Influence of Logging Instrument Drag on Temperature Distribution in Horizontal Gas Wells

    Xingkai Zhang, Xuan Zhang, Ruiquan Liao*

    FDMP-Fluid Dynamics & Materials Processing, Vol.16, No.3, pp. 501-512, 2020, DOI:10.32604/fdmp.2020.09012 - 25 May 2020

    Abstract In order to clarify the influence of the instrument’s own drag on the temperature distribution in the horizontal gas wellbore in temperature logging. By constructing an indoor gas-liquid two-phase horizontal tube flow platform, the effects of the drag speed of the instrument on the temperature distribution in the wellbore were studied in the single-phase gas and gas-liquid two phases. In addition, during the process of instrument dragging, the influence of different perforation cluster opening methods and wellbore inclination on temperature distribution was also studied. The results show that the temperature fluctuation is reduced at higher More >

  • Open Access

    ARTICLE

    Surgical flow disruptions during robotic-assisted radical prostatectomy

    Christopher J. Dru1, Jennifer T. Anger1, Colby P. Souders1, Catherine Bresee2, Matthias Weigl3, Elyse Hallett4, Ken Catchpole5

    Canadian Journal of Urology, Vol.24, No.3, pp. 8814-8821, 2017

    Abstract Introduction: We sought to apply the principles of human factors research to robotic-assisted radical prostatectomy to understand where training and integration challenges lead to suboptimal and inefficient care.
    Materials and methods: Thirty-four robotic-assisted radical prostatectomy and bilateral pelvic lymph node dissections over a 20 week period were observed for flow disruptions (FD) - deviations from optimal care that can compromise safety or efficiency. Other variables - physician experience, trainee involvement, robot model (S versus Si), age, body mass index (BMI), and American Society of Anesthesiologists (ASA) physical status - were used to stratify the data and understand… More >

  • Open Access

    ARTICLE

    FUNDAMENTALS AND APPLICATIONS OF NEAR-FIELD RADIATIVE ENERGY TRANSFER

    Keunhan Parka,∗, Zhuomin Zhangb

    Frontiers in Heat and Mass Transfer, Vol.4, No.1, pp. 1-26, 2013, DOI:10.5098/hmt.v4.1.3001

    Abstract This article reviews the recent advances in near-field radiative energy transfer, particularly in its fundamentals and applications. When the geometrical features of radiating objects or their separating distances fall into the sub-wavelength range, near-field phenomena such as photon tunneling and surface polaritons begin to play a key role in energy transfer. The resulting heat transfer rate can greatly exceed the blackbody radiation limit by several orders magnitude. This astonishing feature cannot be conveyed by the conventional theory of thermal radiation, generating strong demands in fundamental research that can address thermal radiation in the near field. More >

  • Open Access

    ARTICLE

    Ureteroscopic biopsy of upper tract urothelial carcinoma using a novel ureteroscopic biopsy forceps

    Shaun E. L. Wason1, John D. Seigne1, Alan R. Schned2, Vernon M. Pais Jr1

    Canadian Journal of Urology, Vol.19, No.6, pp. 6560-6565, 2012

    Abstract Introduction: We sought to assess the adequacy of surgical specimens obtained utilizing the BIGopsy (Cook Medical, Bloomington, IN, USA) biopsy forceps both ex vivo and in vivo and compare them to traditional 3Fr biopsy forceps in patients with suspected upper tract urothelial carcinoma.
    Materials and methods: Patients undergoing nephroureterectomy for suspected upper tract transitional cell carcinoma were recruited. Surgical specimens, immediately after extirpation were examined and alternatively biopsied ex vivo with the BIGopsy and 3Fr biopsy forceps. We then retrospectively reviewed our most recent experience with ureteroscopic biopsy. The biopsy device, size, depth, grade, stage, pathologic diagnosis… More >

  • Open Access

    ARTICLE

    Cross validation of the prostate cancer radiotherapy late toxicity (PCRT) questionnaire with the expanded prostate cancer index composite (EPIC) instrument

    George Rodrigues1,2, Glenn Bauman1, Varagur Venkatesan1, Belal Ahmad1, Michael Lock1, Tracy Sexton1, David D’Souza1, Larry Stitt2, Somaya Eid1,2

    Canadian Journal of Urology, Vol.18, No.4, pp. 5802-5810, 2011

    Abstract Introduction: A 29-item prostate cancer radiotherapy (PCRT) questionnaire with genitourinary (GU), gastrointestinal (GI), and sexual (S) domains has been previously validated for the assessment of late toxicity health-related quality of life (HRQoL) effects. The study objective was to cross-validate the PCRT domains versus the expanded prostate cancer index composite (EPIC) questionnaire urinary (U), bowel (B), hormonal (H), and S subscales.
    Methods and materials: A single-institution cross-sectional PCRT patient cohort was surveyed. Descriptive and intra- and inter-class correlation coefficient statistics for the various EPIC and PCRT HRQoL domain scores were generated. Univariable and multivariable Cox and logistic regressions… More >

  • Open Access

    ABSTRACT

    Deformation mechanisms in advanced Ti-based alloy in instrument-workpiece interaction

    Murat Demiral, Anish Roy, Vadim V. Silberschmidt

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.17, No.3, pp. 87-88, 2011, DOI:10.3970/icces.2011.017.087

    Abstract Industrial applications of Ti-based alloys especially in aerospace, marine and offshore industries have grown significantly over the years primarily due to their high strength, light weight as well as excellent temperature- and corrosion-resistance properties. Since these alloys are hard to machine, there is an obvious demand to develop simulation tools in order to analyze the material's behavior in machining processes, such as a turning, and to optimize process parameters. High levels of strains and strain rates accompanied by generated high temperatures characterize the deformation process in turning. The character of realisation of deformation mechanisms as… More >

  • Open Access

    ARTICLE

    Development of a near-infrared spectroscopy instrument for applications in urology

    Andrew J. Macnab, Lynn Stothers

    Canadian Journal of Urology, Vol.15, No.5, pp. 4233-4240, 2008

    Abstract Introduction: Near infrared spectroscopy (NIRS) is an established technology using photons of light in the near infrared spectrum to monitor changes in tissue of naturally occurring chromophores, including oxygenated and deoxygenated hemoglobin. Technology and methodology have been validated for measurement of a range of physiologic parameters. NIRS has been applied successfully in urology research; however current instruments are designed principally for brain and muscle study.
    Objective: To describe development of a NIRS instrument specifically designed for monitoring changes in chromophore concentration in the bladder detrusor in real time, to facilitate research to establish the role of this… More >

  • Open Access

    EDITORIAL COMMENT

    The Erectile Function Visual Analog Scale (EF-VAS): a disease-specific utility instrument for the assessment of erectile function - Page 3016

    Kok Bin Lim, Gerald B Brock

    Canadian Journal of Urology, Vol.13, No.2, pp. 3026-3026, 2006

    Abstract This article has no abstract. More >

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