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Journal articles on the topic 'Standardized parameters'

Author: Grafiati

Published: 30 May 2022

Last updated: 19 July 2025

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Greenland, Sander, and George Maldonado. "The interpretation of multiplicative-model parameters as standardized parameters." Statistics in Medicine 13, no. 10 (1994): 989–99. http://dx.doi.org/10.1002/sim.4780131002.

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Greenland, Sander. "Estimating standardized parameters from generalized linear models." Statistics in Medicine 10, no. 7 (1991): 1069–74. http://dx.doi.org/10.1002/sim.4780100707.

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Nelder, J. A., Sander Greenland, and R. G. Newcombe. "Estimating standardized parameters from generalized linear models." Statistics in Medicine 11, no. 4 (1992): 559–60. http://dx.doi.org/10.1002/sim.4780110418.

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Kubota, Junichiro. "Anti-cook book approach, pro-standardized treatment parameters." Journal of Cosmetic Dermatology 3, no. 4 (2004): 242. http://dx.doi.org/10.1111/j.1473-2130.2004.00131.x.

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Stepanets, Ivan R., Sergey A. Koskin, and Alexei N. Kulikov. "Standardized Russian reading chart for assessing reading parameters." Ophthalmology Reports 17, no. 1 (2024): 51–62. http://dx.doi.org/10.17816/ov622989.

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BACKGROUND: A number of charts based on checking reading parameters are increasingly being used to assess visual functions. These charts are standardized, translated into many languages. The development of a Russian chart based on international standards and the determination of age norms of clinical reading parameters will allow it to be used for a more accurate assessment of the dynamics of diseases and treatment results. AIM: The aim is to determine the normal reading parameters in patients of different age groups. MATERIALS AND METHODS: Based on international standards, two Russian charts have been developed to study reading parameters. Reading parameters were determined during one session in 135 subjects, divided into 3 groups: I — 18–39 years, II — 40–59 years, and III — 60–81 years. Three main parameters were studied: maximum reading speed, critical print size, and reading acuity (RA). RESULTS: As a result of the study, age norms for basic reading parameters were determined. Maximum reading speed in group I was 192.5 ± 1.2, in group II — 180.6 ± 1.1 and in group III — 168.9 ± 0.8 words/min. Critical print size in group I was 0.14 ± 0.01, in group II — 0.24 ± 0.01, and in group III — 0.36 ± 0.01 logMAR. The reading acuity in group I was 0.009 ± 0.006, in group II — 0.075 ± 0.04, in group III — 0.143 ± 0.005 logMAR. The differences between the studied parameters in groups I/II, I/III and II/III were statistically significant (p 0.05). CONCLUSIONS: The indicators of reading parameters obtained during the study can be used as approximate age norms.

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Todorovic, Arsenije, and Bojana Kalenjuk. "Standardized recipe and quality parameters for Pirot traditional bread." Pirotski zbornik, no. 41 (2016): 1–25. http://dx.doi.org/10.5937/pirotzbor1641001t.

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Ben-Shachar, Mattan, Daniel Lüdecke, and Dominique Makowski. "effectsize: Estimation of Effect Size Indices and Standardized Parameters." Journal of Open Source Software 5, no. 56 (2020): 2815. http://dx.doi.org/10.21105/joss.02815.

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Vorlaender, Michael. "Non-standardized room acoustic metrics." Journal of the Acoustical Society of America 155, no. 3_Supplement (2024): A91. http://dx.doi.org/10.1121/10.0026915.

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The first edition of ISO 3382 was adopted in 1997. It already listed T30, Early Decay Time, Clarity, Definition, Center time, Lateral fraction and IACC as relevant room acoustic parameters. They are still up to date, only supplemented by the division into two dimensions of the spatial impression and by the stage support. In the last decade, new research has been conducted on sound perception in concert halls and the results seem to confirm that loudness, reverberation, clarity (intelligibility) and localization are the most important. More recently, auditory-visual interaction, loudness decay and directional reverberation have been found to be factors that describe dimensions of the overall experience of music in a concert hall. This paper highlights the challenges associated with some of the standard parameters and the opportunities presented by newly developed metrics.

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Kalioujny, Boris. "Towards a standardized circular economy." Society and Economics, no. 4 (June 29, 2024): 44–57. http://dx.doi.org/10.31857/s0207367624040045.

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The purpose of this article is to outline the future development of the circular economy (CE) concept, which is moving towards a standardized model, although it does not yet have a standardized definition. EC has been developing very dynamically over the past 10–15 years around the world: for example, the process of creating a new multilateral environmental agreement to completely stop the use of disposable plastic products, the development of indicators and tools for implementing the concept, and the introduction of a number of new laws are taking place. Research methodology: an analysis of the process of standardization of a low-carbon economy through the integration of environmental parameters into the socio-economic system (anthropogenic greenhouse gas emissions and their absorption) is carried out from the point of view of reporting by companies. Results of the study: firstly, the key types of reporting by companies on the low-carbon economy and the typology of standards used have been identified. Secondly, existing types of reporting and standards related to the EC model are identified, and possible ways to make the transition to full EC standardization are explored. Originality and contribution of the author: for the first time in Russia, the work presents a comparative analysis between EC and the low-carbon economy, taking into account such parameters as the volumes and dynamics of these markets, the role, structure and prospects for the development of the EPC standardization process.

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Vakulenko, Olesya S., and Sergey A. Grachev. "SUSTAINABLE DEVELOPMENT OF RUSSIAN REGIONS: ASSESSMENT, ANALYSIS." Krasnoyarsk Science 11, no. 2 (2022): 18–33. http://dx.doi.org/10.12731/2070-7568-2022-11-2-18-33.

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Relevance. The depletion of natural resources, the problems of poverty, malnutrition and inequality are some examples from the endless list of problems of humanity. They actualized the issue of sustainable development. Problem. Despite the relevance, there is a lack of a standardized methodological approach to assessing the parameters of sustainable development, which is a research problem. Goal. Formation of a standardized methodical approach for assessing the parameters of sustainable development and identification of donor regions. Methods. In the course of the study, methods of analysis and synthesis were used to form the estimated parameters, comparison to evaluate the results obtained, formalization to standardize the approach. Results. The combination of methods made it possible to form and test an approach based on the author’s sustainable development index, taking into account the risk of changes in development, in 66 regions of the Russian Federation over a 20-year period. The result was the identification of the region most prepared for donation in the economic sphere – the Krasnodar Territory.

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Koskin, Sergey Alekseevich, and Ivan Ruslanovich Stepanets. "Standardized ophthalmic tests for evaluating reading parameters: a brief historical review." Ophthalmology journal 13, no. 4 (2020): 47–55. http://dx.doi.org/10.17816/ov50885.

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In the review, the analysis of the most common ophthalmic standardized tests for evaluating reading was carried out: BaileyLovie Word Reading Charts, MNREAD Acuity Chart, Radner reading chart, SmithKettlewell Reading Test (SKread), IReST, Salzburg Reading Desk, Ramulu test, Radner paragraph optotypes, Balsam AlabdulkaderLeat (BAL) chart, Chinese Reading Acuity Charts (C-READ), chart for reading threshold and reading speed evaluation by T.S. Egorova. The following parameters were considered: maximum reading speed, reading threshold, reading acuity, reading accessibility index, threshold reading speed. Recovering the ability to read fluently is one of the criteria for assessing the success of treatment, as well as quality of life for patients of various age groups

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Damodhar M, Gajanan, and Tushar Ramkrishna Deshmukh. "Standardized Hip Implant by Cluster Analysis of Anthropometry Parameters of Femur." Journal of Medical Sciences 19, no. 1 (2018): 11–16. http://dx.doi.org/10.3923/jms.2019.11.16.

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Shu, Lianjie, Wei Jiang, and Kwok-Leung Tsui. "A standardized scan statistic for detecting spatial clusters with estimated parameters." Naval Research Logistics (NRL) 59, no. 6 (2012): 397–410. http://dx.doi.org/10.1002/nav.21493.

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Fjellner, B., BB Arnetz, P. Eneroth, and A. Kallner. "Pruritus during standardized mental stress. Relationship to psychoneuroendocrine and metabolic parameters." Acta Dermato-Venereologica 65, no. 3 (1985): 199–205. http://dx.doi.org/10.2340/0001555565199205.

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The influence of experimentally-induced emotional stress on pruritic response of human skin was studied in healthy subjects. Experimental activation of the psychoneuroendocrine system was produced by standardized stressors, i.e. a colour-word-conflict test (Stroop-test) and a subsequent mental arithmetic problem. Pruritus was elicited by intradermal injection of histamine. Results obtained were compared with reported feelings of stress, and stress-induced physiological and biochemical changes. Reported stress levels were evaluated by a visual analogue scale. The physiological and biochemical observations included pulse rate, blood pressure, endocrine and metabolic parameters. The experimental model produced adequate psychoneuroendocrine stress reactions. Cutaneous responses to histamine remained despite this unaltered. The cutaneous responses were unrelated to reported stress levels as well as to physiological and biochemical variables prior to stressor exposure. The individual cutaneous reactions to stressor exposure were related to the adrenaline response pattern. Degree of control, ability to predict, and time limitation of the experimental situation may be important factors influencing the experimental outcome.

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Kosiuczenko, Krzysztof. "An attempt to identify concrete strength parameters by simulating standardized tests." Journal of Civil Engineering and Transport 6, no. 3 (2024): 49–56. https://doi.org/10.24136/tren.2024.012.

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This study focuses on transport infrastructure, particularly the construction and maintenance of concrete airport pavements, which are crucial for aviation transport safety. The main objective of the research was to evaluate the effectiveness of standard methods for determining the strength of concrete used in airport slabs (LWS) and road slabs (MON). The study employed the finite element method (FEM), comparing its results with experimental data. Simulations of concrete compression and bending tests were conducted in accordance with procedures described in standardization documents. The research results confirmed the usefulness of standard methods for testing and determining concrete strength. At the same time, the study highlighted the limitations of simplified calculation formulas contained in the standards. This research was carried out with the support of the Interdisciplinary Centre for Mathematical and Computational Modelling at the University of Warsaw (ICM UW).

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Pop, Liviu Dorin. "Study on the Influence of Carbon on Standardized and Non-Standardized Steel." Acta Marisiensis. Seria Technologica 16, no. 1 (2019): 14–18. http://dx.doi.org/10.2478/amset-2019-0003.

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Abstract The way a piece or tool behaves in operation is determined by the quality of the material from which it is made, the precision of execution and heat treatment applied. In the present research, it is highlighted the differences that take shape after heat treating different materials (low carbon steel and high alloyed steel) including heating to dissimilar austenitic phases (880°C and 1020°C), holding for non-identical times, tempering at low temperature (260 °C) and then cooling by using separate cooling mediums (oil, air and water). The results show no noticeable increase in the hardness and mechanical properties for the low carbon steel after the heat treatment, but on the other hand, the high alloyed steel, reveals distinguishable changes in both hardness and mechanical properties. There is a close link between the structure, the parameters of the thermal processes and the properties that are desired so that future specialists have to assimilate the basic knowledge related to the phenomena that occur during a heat treatment but at the same time it is important to equip the companies with machines and measure devices, like a spectrometer.

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Yang, Xiaocui, Liang Chen, Xinmin Shen, et al. "Optimization of geometric parameters of the standardized multilayer microperforated panel with finite dimension." Noise Control Engineering Journal 67, no. 3 (2019): 197–209. http://dx.doi.org/10.3397/1/376718.

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Standardized multilayer microperforated panel fabricated by laser beam machining of the spring steel was proposed for noise reduction in this study. Geometric parameters of the standardized multilayer microperforated panel, which include diameter of the hole, thickness of the panel, distance between the neighbor holes, and length of the cavity, were optimized for the better sound absorption performance. Sound absorption coefficient of the standardized multilayer microperforated panel was theoretically modeled based on the Maa's theory. The optimization of geometric parameters of the standardized multilayer microperforated panel was obtained by the Cuckoo search algorithm, and the finite dimension of 30 mm was treated as the additional constraint condition. Preliminary verification of the obtained optimal parameters was conducted through the constructed finite element simulation model. Actual sound absorption coefficients of the standardized multilayer microperforated panels with layer number of 1 to 4 were measured by standing wave method, which were consistent with theoretical data and simulation data, and the corresponding average values in the frequency range of 100â–“6000 Hz were 57.45%, 70.85%, 71.99%, and 72.28%, respectively. By theoretical modeling, parameter optimization, simulation, and experimental validation, an effective method was proposed to develop practical sound absorbers, which would promote their applications in noise reduction.

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Manganaro, Roberta, Stella Marchetta, Raluca Dulgheru, et al. "Correlation between non-invasive myocardial work indices and main parameters of systolic and diastolic function: results from the EACVI NORRE study." European Heart Journal - Cardiovascular Imaging 21, no. 5 (2019): 533–41. http://dx.doi.org/10.1093/ehjci/jez203.

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Abstract Aims The present study sought to evaluate the correlation between indices of non-invasive myocardial work (MW) and left ventricle (LV) size, traditional and advanced parameters of LV systolic and diastolic function by 2D echocardiography (2DE). Methods and results A total of 226 (85 men, mean age: 45 ± 13 years) healthy subjects were enrolled at 22 collaborating institutions of the Normal Reference Ranges for Echocardiography (NORRE) study. Global work index (GWI), global constructive work (GCW), global work waste (GWW), and global work efficiency (GWE) were estimated from LV pressure-strain loops using custom software. Peak LV pressure was estimated non-invasively from brachial artery cuff pressure. LV size, parameters of systolic and diastolic function and ventricular-arterial coupling were measured by echocardiography. As advanced indices of myocardial performance, global longitudinal strain (GLS), global circumferential strain (GCS), and global radial strain (GRS) were obtained. On multivariable analysis, GWI was significantly correlated with GLS (standardized beta-coefficient = −0.23, P &lt; 0.001), ejection fraction (EF) (standardized beta-coefficient = 0.15, P = 0.02), systolic blood pressure (SBP) (standardized beta-coefficient = 0.56, P &lt; 0.001) and GRS (standardized beta-coefficient = 0.19, P = 0.004), while GCW was correlated with GLS (standardized beta-coefficient = −0.55, P &lt; 0.001), SBP (standardized beta-coefficient = 0.71, P &lt; 0.001), GRS (standardized beta-coefficient = 0.11, P = 0.02), and GCS (standardized beta-coefficient = −0.10, P = 0.01). GWE was directly correlated with EF and inversely correlated with Tei index (standardized beta-coefficient = 0.18, P = 0.009 and standardized beta-coefficient = −0.20, P = 0.004, respectively), the opposite occurred for GWW (standardized beta-coefficient =−−0.14, P = 0.03 and standardized beta-coefficient = 0.17, P = 0.01, respectively). Conclusion The non-invasive MW indices show a good correlation with traditional 2DE parameters of myocardial systolic function and myocardial strain.

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Gorozhankin, S. A., A. D. Bumaga, and N. V. Savenkov. "Improving Car Fuel Efficiency by Optimising Transmission Parameters." International Journal of Automotive and Mechanical Engineering 16, no. 3 (2019): 7019–33. http://dx.doi.org/10.15282/ijame.16.3.2019.14.0526.

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The theoretical and experimental studies of the car power unit functioning at unsteady modes have been conducted. The experimental studies have been conducted using the test stand for measuring engine performance. In addition, the measurements of the parameters of the power unit of the category N1 vehicle under natural conditions (the road tests in the modes of standardized driving cycles) have been made. The aim of the work is increasing the fuel efficiency of the vehicles under operating conditions. For this purpose, the transmission parameters have been optimised for the conditions of the vehicle driving in the standardized NEDC and WLTC driving cycles. The research results enable to give recommendations on improving both the design of the power unit and its operating modes in operation.

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Flavell, Carol A., Laurence G. Marshman, and Susan J. Gordon. "Measurement of transversus abdominis activation in chronic low back pain patients using a novel standardized real-time ultrasound imaging method." Ultrasound 27, no. 1 (2018): 31–37. http://dx.doi.org/10.1177/1742271x18785403.

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Real-time ultrasound imaging (US) to measure abdominal muscle dimensions has aided low back pain rehabilitation and research. Notwithstanding, ultrasound imaging measurement of transversus abdominis muscle activation in chronic low back pain populations has been characterized by variable and generally suboptimal intra-observer reliability. Methodological deficiencies of ‘freehand’ ultrasound imaging are uncontrolled probe–skin pressure, inclination and roll of the probe. Despite previous attempts to standardize these parameters, intra-observer reliability in chronic low back pain was poor to moderate (0.32–0.62). Therefore, a standardized method that controls and records probe force, inclination and roll during ultrasound imaging may optimize measurement reliability in chronic low back pain. This pilot study investigated utility, standardization and intra-observer reliability of ultrasound imaging transversus abdominis thickness measurement in chronic low back pain patients (n = 17). Transversus abdominis imaging over two separate measurement sessions was conducted using a novel method to standardize probe parameters. Resting and contracted transversus abdominis thickness, and transversus abdominis activation measurements were obtained from duplicate paired images (n = 68). Intra-class correlation coefficients were reported with 95% confidence intervals. Transversus abdominis thickness at rest (intra-class correlation coefficient = 0.97 confidence interval: 0.93, 0.99), when contracted (intra-class correlation coefficient = 0.99 confidence interval: 0.97, 0.99) and transversus abdominis activation (intra-class correlation coefficient = 0.93 confidence interval: 0.81, 0.97) measurements were highly reliable. Ultrasound imaging of transversus abdominis using the novel standardized ultrasound imaging method produced highly reliable intra-observer transversus abdominis measurements, superior to ‘freehand’ ultrasound imaging, despite the physical limitations typically associated with a chronic low back pain population. Unique standardizing ranges for ‘probe force device’ probe parameters were obtained. This novel standardized ultrasound imaging method may optimize transversus abdominis activation assessment in chronic low back pain and other populations, aiding future research.

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Pratama, Yusuf Alif, Honey Dzikri Marhaeny, Salsabilla Madudari Kasatu, et al. "The optimisation and standardisation of Indonesian house dust mites allergenic extract as a desensitising agent." Pharmacy Education 23, no. 4 (2023): 137–39. http://dx.doi.org/10.46542/pe.2023.234.137139.

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Background: The different sequences of the allergen protease can induce different immunogenicity for the development of immunotherapy. Dermatophagoides pteronyssinus that has Der p1 as major protein will be developed as local allergen to be immunotherapy for treating rhinitis allergy. Objective: This study aims to optimize and standardize the local Indonesian House Dust Mites Allergenic Extract from the harvesting into the extraction process. Method: The harvesting media used is corn flour placed in certain conditions to produce the mites. After harvesting the flour in different weeks, the flour was extracted and the lipid content and Der p1 assay were measured. Result: The result of the study is that the 3 weeks-harvesting time came higher for those parameters than the other harvesting time (p < 0.05). Conclusion: Thus, it was concluded that the standardized harvesting and extraction process had been developed to produce the standardised Indonesian House Dust Mites Allergenic Extract.

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thomas, Mrs Vincy, and Mrs C. Prabha Starlin. "EFFECT OF STRUCTURED NURSING INTERVENTIONS ON SELECTED MATERNAL PARAMETERS AMONG CAESAREAN MOTHERS." GENESIS 8, no. 3 (2021): 34–36. http://dx.doi.org/10.47211/tg.2021.v08i03.007.

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A study was conducted to assess the effect of structured nursing interventions on selected maternal parameters among mothers undergone lower segment caesarean section at M.G.M Hospital, Kalamboli, Navi Mumbai. A quasi-experimental research approach and Pretest-posttest control group design was adopted. The 50 samples were selected using Nonprobability convenient sampling technique. The instrument used for the data collection procedure was Observation checklist for measuring comfort of mother, Standardized Numerical pain rating scale, Standardized breast-feeding LATCH scale and Brief Modified Pain Inventory

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Eid, Alaa Youssef, Dalia A. Al-Mahdy, Rabab H. Sayed, Mouchira A. Choucry, and Hesham El-Askary. "Topical application of standardized capsicum and rosemary extracts promotes hair growth in testosterone induced alopecia in Wistar rats: Histological and morphometric evaluation." Indian Journal of Pharmacology 57, no. 3 (2025): 134–44. https://doi.org/10.4103/ijp.ijp_636_24.

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JOURNAL/ijpha/04.03/01363791-202505000-00004/figure1/v/2025-07-10T125845Z/r/image-tiff INTRODUCTION: Alopecia, a common condition causing hair loss, leads to decreased self-esteem worldwide. Natural extracts such as rosemary (Rosmarinus officinalis L.) and capsicum (Capsicum annuum L.), traditionally used for various medicinal purposes in Egypt, are widely utilized in treatments for androgenetic alopecia and hair care products. However, these extracts lack market standardization and clear specifications, leading to inconsistent and unpredictable effects. OBJECTIVES: This study aims to investigate the effects of standardized rosemary and capsicum extracts on testosterone-induced androgenetic alopecia in rats to ensure consistent quality and safety in marketed hair care products. MATERIALS AND METHODS: The study involved preparing standardized rosemary and capsicum extracts and developing simple, accurate, sensitive, rapid, and reproducible methods for both. The extracts were tested on adult male Wistar rats with testosterone-induced alopecia, using a 2% finasteride solution as a reference standard. Visual and microscopic evaluations were conducted to measure three hair follicle parameters: diameter, length, and density. RESULTS: This study demonstrated the potent effects of standardized rosemary and capsicum extracts on hair growth parameters over 21 days; the application of 0.075% of standardized capsicum extract significantly improved hair growth parameters, including follicle density, length, and diameter. Furthermore, standardized rosemary extracts at 3% and 5% concentrations showed significant improvements across all measured parameters, particularly in hair follicle density. CONCLUSIONS: This study highlights the potential of standardized rosemary and capsicum extracts in promoting hair growth parameters, including hair follicle density, length, and diameter. It will pave the way for more effective natural-based androgenetic alopecia treatment.

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Samusev, S. V., A. V. Lyuskin, A. I. Romantsov, K. L. Zhigunov, and A. N. Fortunatov. "Calculating tool parameters for standardized welded-pipe groups in edge-bending presses." Steel in Translation 43, no. 5 (2013): 236–38. http://dx.doi.org/10.3103/s0967091213050173.

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Chalifoux, Nolan V., Carl F. Spielvogel, Darko Stefanovski, and Deborah C. Silverstein. "Standardized capillary refill time and relation to clinical parameters in hospitalized dogs." Journal of Veterinary Emergency and Critical Care 31, no. 5 (2021): 585–94. http://dx.doi.org/10.1111/vec.13088.

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Ibănescu, Iulian, Petru Roşca, Ioana Sfartz, Gelu Pavel, and Dan Drugociu. "Seasonal variation of some sperm parameters in boars housed in standardized conditions." Journal of Microbiology, Biotechnology and Food Sciences 05, no. 01 (2015): 52–54. http://dx.doi.org/10.15414/jmbfs.2015.5.1.52-54.

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Byrd, Darrin, Rebecca Christopfel, John Buatti, et al. "Multicenter survey of PET/CT protocol parameters that affect standardized uptake values." Journal of Medical Imaging 5, no. 01 (2017): 1. http://dx.doi.org/10.1117/1.jmi.5.1.011012.

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Lim, K., R. McElroy, A. Wong, and G. S. Sandor. "P05.17: Fetal pulmonary artery diameters and ratios standardized for fetal biometric parameters." Ultrasound in Obstetrics and Gynecology 26, no. 4 (2005): 414. http://dx.doi.org/10.1002/uog.2377.

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Nikiforov, A. D., and I. S. Zhukova. "Automatic search system for searching parameters of standardized precision of technical equipment." Chemical and Petroleum Engineering 34, no. 2 (1998): 123–26. http://dx.doi.org/10.1007/bf02418172.

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Andrade Martinez, Rodrigo, Luciana Bolzan Agnelli Martinez, José Augusto Marcondes Agnelli, and Valéria Meirelles Carril Elui. "A standardized assessment of moldability parameters of thermoplastic materials used in orthotic manufacturing." PLOS ONE 17, no. 8 (2022): e0267777. http://dx.doi.org/10.1371/journal.pone.0267777.

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Objective To establish parameters for standardized assessment of the moldability of thermoplastic materials used in orthotic manufacturing and to develop tests for quantification of moldability parameters by simulating the demands of clinical practice, in order to enable accurate and controlled analysis of material properties. Primary outcome measurements Two commercially available materials were submitted to tests for standardized measurement of moldability. Results were correlated with manufacturer information. Moldability assessment was based on two parameters (conformation and fit), expressed as percentages. Results Tests, standardized molding procedures and measurements were described. Quantitative data (conformation and fit expressed in percentages) were derived from a pilot study comparing Aquaplast-T™ and Ezeform™. Findings of that study revealed that Aquaplast-T™ is more moldable than Ezeform™ and support technical information provided by the manufacturer. Conclusions The assessment method described enabled objective and repeatable measurement of the moldability of materials used in orthotic manufacturing and represent a significant advancement in comparative analysis of materials, with potential positive impacts on therapeutic procedures and clinical decision-making. Tests developed in this study can be used to quantify data provided by manufacturers in order to allow their use by researchers and professionals in rehabilitation.

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Serhii, Novak, Drizhd Varvara, Dobrostan Oleksandr, and Maladyka Larisa. "INFLUENCE OF TESTING SAMPLES' PARAMETERS ON THE RESULTS OF EVALUATING THE FIREPROTECTIVE CAPABILITY OF MATERIALS." Eastern-European Journal of Enterprise Technologies 2, no. 10 (98) (2019): 35–42. https://doi.org/10.15587/1729-4061.2019.164743.

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Test methods given in EN 13381-4:2013 and EN 13381-8:2013 standards serve to assess the fire-protective capacity of materials for steel structures. The results of the tests determine data on minimum thickness of fire-protective materials used further in design of steel structures. The tests are very time consuming. They require significant costs for creation of standardized samples and conduction of tests. At the same time, there are methods, which propose to use samples of reduced sizes and of other shapes than sizes and shapes of standardized samples. There is an actual question about possibility of application of methods with samples of reduced sizes as an alternative to EN 13381-4:2013 and EN 13381-8:2013 methods. The study investigated the convergence of results of assessment of the fire-protective capacity of two types of fire-protective materials for steel structures obtained in tests on standardized samples and tests on samples of reduced sizes. We established that values of the minimum thickness for reactive fire-protective material obtained from the test data on samples of reduced sizes are predominantly larger than values for standardized samples. Values of the minimum thickness for passive fire-protective material obtained using standardized samples are mainly large. The difference between the minimum thickness of reactive fire-protective material obtained on samples of reduced size and standardized samples reaches 79.0 %, and it is 62.5 % for a passive fire-protective material. Such difference of values indicates that it is impossible to use samples of reduced sizes for assessment of the fire-protective capacity of materials for steel structures for all ranges of reduced thickness of a steel profile, critical steel temperature and the normalized threshold of fire resistance of structures listed in EN 13381-4: 2013 and EN 13381-8: 201

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Shuaib, Ali, and Ali K. Bourisly. "Photobiomodulation optimization for spinal cord injury rat phantom model." Translational Neuroscience 9, no. 1 (2018): 67–71. http://dx.doi.org/10.1515/tnsci-2018-0012.

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Abstract Spinal Cord Injury (SCI) causes interruption along the severed axonal tract(s) resulting in complete or partial loss of sensation and motor function. SCI can cause tetraplegia or paraplegia. Both these conditions can have lifelong excessive medical costs, as well as can reduce life expectancy. Preclinical research showed that Photobiomodulation therapy (PBMT), also known as Low-level laser (light) therapy (LLLT), possesses reparative and regenerative capabilities that have the potential to be used as a complimentary or supplementary SCI therapy. Despite the promising effects of PBMT, there are still no standardized irradiation parameters (i.e. different wavelengths, power, fluence, irradiance, beam type, beam diameters, and irradiation time) and there is also a lack of standardized experimental protocol(s), which makes it difficult to compare different studies. It is, nonetheless, essential to standardize such irradiation parameters in order to provide better PBMTs. The aim of this study, therefore, is to evaluate the delivery of light in a 3D voxelated SCI rat model for PBMT using different irradiation parameters (wavelengths: 660, 810, and 980 nm; beam types: Gaussian and Flat beam; and beam diameters: 0.04-1.2 cm) using Monte Carlo simulation. This study also aids in providing standardization for preclinical research for PBMT, which will eventually translate into clinical standardization upon clinical research studies and results.

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Werner, M. "Can medical decisions be standardized? Should they be?" Clinical Chemistry 39, no. 7 (1993): 1361–68. http://dx.doi.org/10.1093/clinchem/39.7.1361.

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Abstract After a variety of regulatory and payment schemes have failed to stem the rising tide of health care cost, the Omnibus Budget Reconciliation Act of 1989 mandates the creation of a system of decision rules called practice parameters for appropriate medical action in many circumstances. A large body of practice guidelines already exists, but lacks the internal coherence required of a policy tool. Professional organizations therefore have developed attributes to achieve uniform style. However, little has been said or published about the constraints that might be imposed on the structure and content of an efficient and coherent system. The arguments presented here lead to the following conclusions: (a) process control is an inefficient tool to manage outcome--standards should reflect product control; (b) guidelines that proscribe are more likely to be supported by scientific data and consensus than those that prescribe; (c) the decision thresholds contained in such directives are policy choices rather than scientific imperatives; (d) neither decision analysis nor artificial intelligence is likely to readily influence medical decisions; and (e) as suggested by operations research, the development of practice parameters should concentrate on issues of therapeutic management in preference to issues of diagnostic activity.

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Cordeiro, Gauss M., Thiago A. N. De Andrade, Marcelo Bourguignon, and Frank Gomes-Silva. "The Exponentiated Generalized Standardized Half-logistic Distribution." International Journal of Statistics and Probability 6, no. 3 (2017): 24. http://dx.doi.org/10.5539/ijsp.v6n3p24.

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We study a new two-parameter lifetime model called the exponentiated generalized standardized half-logistic distribution, which extends the half-logistic pioneered by Balakrishnan in the eighties. We provide explicit expressions for the moments, generating and quantile functions, mean deviations, Bonferroni and Lorenz curves, and order statistics. The model parameters are estimated by the maximum likelihood method. A simulation study reveals that the estimators have desirable properties such as small biases and variances even in moderate sample sizes. We prove empirically that the new distribution provides a better fit to a real data set than other competitive models.

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Ramulu, Shree Devi Munusamy Sampangi, Parameswaran Sathiyarajeswaran, Kirubakaran Narayanan, Soman Vinayak, Kiruthiga Ganesan, and Kadarkarai Kanakavalli. "Formulation and Standardization of Siddha Pediatric Tablet dosage." International Journal of Nutrition, Pharmacology, Neurological Diseases 11, no. 4 (2021): 267–73. http://dx.doi.org/10.4103/ijnpnd.ijnpnd_25_21.

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Herbal remedies have grown at an exponential rate since ancient times. Traditional medicines require newer standardization, manufacturing, quality control, and scientifically rigorous research to meet standardization. Bala Sanjeevi Mathirai (BSM) is a Siddha pediatric tablet formulation used for the treatment of cough, fever, vomiting, biliousness, and diarrhoea occurring in children due to dyspepsia. This work was purposed to formulate and standardize BSM as per the guidelines set forth by the regulatory authorities (PLIM). Three validation batches of the formulation were prepared. Tablets were standardized by different physiochemical parameters and evaluated by various studies such as precompression and post compression parameters. All parameters were passed with reference to the standard limits. The set parameters were sufficient to evaluate the tablet and further this could be used as reference standards for the quality control/quality assurance laboratory of the pharmaceutical house.

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Sena, Khemajit, and Surasith Piyasin. "Optimization Parametric Study of Deep Drawing Process for a Standardized Cranial Implant." Advanced Materials Research 335-336 (September 2011): 813–17. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.813.

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The purpose of this study is to investigate the optimal process parameters use to fabricated a standardized cranial implant using deep drawing with a titanium mesh sheet. First, the mold for deep drawing, consisting of die, punch, blankholder and blank sheet, was designed within a CAD program. Then the formability of the mold was simulated using FE software. Furthermore, a link between the result of the FE simulation and CAE program was established to determine the best input parameters in the deep drawing system which produced minimal defects (wrinkles and ruptures). The parameters of interest in this study were the overall friction coefficient, blankholder friction coefficient, blankholder force and blank sheet thickness. The results showed the high feasibility of the joint CAE program and optimization procedure to calculate the best input parameters which can reduce time and cost consuming physical tryouts.

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Cremona, Martina, Giulio Rusconi, Alessandro Ferrario, Luca Mariotta, Mauro Gola, and Gianni Soldati. "Processing Adipose Tissue Samples in a GMP Environment Standardizes the Use of SVF in Cell Therapy Treatments: Data on 302 Patients." Biomedicines 11, no. 9 (2023): 2533. http://dx.doi.org/10.3390/biomedicines11092533.

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Stromal vascular fraction (SVF) cells, together with adipose-derived mesenchymal stem cells, are becoming the tool of choice for many clinical applications. Currently, nearly 200 clinical trials are running worldwide to prove the efficacy of this cell type in treating many diseases and pathological conditions. To reach the goals of cell therapies and produce ATMPs as drugs for regenerative medicine, it is necessary to properly standardize GMP processes and, thus, collection methods, transportation strategies, extraction protocols, and characterization procedures, without forgetting that all the tissues of the human body are characterized by a wide inter-individual variability which is genetically determined and acquired during life. Here, we compare 302 samples processed under GMP rules to exclude the influence of the operator and of the anatomical site of collection. The influence of variability in the ages and genders of patients, along with laboratory parameters such as total cell number, cell viability, stem cell number, and other stromal vascular fraction cell subpopulations, has been compared. The results show that when the laboratory protocol is standardized, the variability of quantifiable cell parameters is widely statistically non-significant, meaning that we can take a further step toward standardized advanced cell therapy products.

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Hind, Jacqueline, Elizabeth Divyak, Jill Zielinski, et al. "Comparison of standardized bariums with varying rheological parameters on swallowing kinematics in males." Journal of Rehabilitation Research and Development 49, no. 9 (2012): 1399. http://dx.doi.org/10.1682/jrrd.2011.09.0180.

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Takeshi, Nii, Hosokawa Shota, Kotani Tomoya, Nakamura Yasunori, Kondo Ryotaro, and Takahashi Yasuyuki. "Image reconstruction parameters and the standardized uptake value ratios in brain amyloid PET." Nuclear Medicine Communications 45, no. 11 (2024): 984–91. http://dx.doi.org/10.1097/mnm.0000000000001899.

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Objectives The present study investigated various image reconstruction protocols for amyloid PET using phantom test criteria published by the Japanese Society of Nuclear Medicine (JSNM) and compared them with the composite standardized uptake value ratio (cSUVR) in clinical imaging. Methods Hoffman 3D phantoms and cylindrical phantoms were collected for 30 min according to the JSNM guidelines. Images were created under various reconstruction protocols by three physical evaluation items in the guidelines and were assessed: gray matter/white matter contrast (%contrast), uniformity (SDuROImean), and image noise [coefficient of variation (CV)]. We compared the cSUVR of images reconstructed under 15 protocols using 18F-flutemetamol and 18F-florbetapir in 15 cases each and the guidelines for physical evaluation of reconstruction parameters. Results No significant differences were observed in cSUVR between reconstruction protocols that satisfied the guidelines’ criteria for %contrast and CV and those that did not; however, the visual impression of images differed. SDuROImean, which evaluated uniformity, met the criteria in all data. Conclusion Reconstruction protocols should be selected appropriately using guidelines and other information, as cSUVR remains largely the same even if the visual impression of the images differs between different reconstruction protocols. When the relationship between %contrast and CV is expressed in terms of several reconstruction protocols, the graph shows a curved shape, and the optimal protocols for both %contrast and CV are near its center. Since cSUVR is similar to optimal parameters, even under parameters outside this range, multiple parameters need to be considered when selecting image reconstruction protocols for amyloid PET.

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Gökpınar, Esra. "Standardized Log-Likelihood Ratio Test for the Equality of Inverse Gaussian Scale Parameters." Iranian Journal of Science and Technology, Transactions A: Science 43, no. 4 (2018): 1705–11. http://dx.doi.org/10.1007/s40995-018-0617-6.

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Okazaki, Shintaro, Hiroki Murai, Hisako Hayashi, Akiko Kawakita, Motoko Yasutomi, and Yusei Ohshima. "Standardized Airway Resistances Are Practical Parameters for Asthmatic Children Who Cannot Perform Spirometry." Journal of Allergy and Clinical Immunology 135, no. 2 (2015): AB178. http://dx.doi.org/10.1016/j.jaci.2014.12.1517.

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Lai, Keke. "Estimating Standardized SEM Parameters Given Nonnormal Data and Incorrect Model: Methods and Comparison." Structural Equation Modeling: A Multidisciplinary Journal 25, no. 4 (2018): 600–620. http://dx.doi.org/10.1080/10705511.2017.1392248.

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Süß, Sebastian, Titus Sobisch, Wolfgang Peukert, Dietmar Lerche, and Doris Segets. "Determination of Hansen parameters for particles: A standardized routine based on analytical centrifugation." Advanced Powder Technology 29, no. 7 (2018): 1550–61. http://dx.doi.org/10.1016/j.apt.2018.03.018.

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Spädt, Dietrich, Niclas Richter, Cornelia Golle, Andrea Ehrmann, and Lilia Sabantina. "Comparison of a Custom-Made Inexpensive Air Permeability Tester with a Standardized Measurement Instrument." Technologies 12, no. 6 (2024): 79. http://dx.doi.org/10.3390/technologies12060079.

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The air permeability of a textile fabric belongs to the parameters which characterize its potential applications as garments, filters, airbags, etc. Calculating the air permeability is complicated due to its dependence on many other fabric parameters, such as porosity, thickness, weaving parameters and others, which is why the air permeability is usually measured. Standardized measurement instruments according to EN ISO 9237, however, are expensive and complex, prohibiting small companies or many universities from using them. This is why a simpler and inexpensive test instrument was suggested in a previous paper. Here, we show correlations between the results of the standardized and the custom-made instrument and verify this correlation using fluid dynamics calculations.

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Stepanets, I. R., S. A. Koskin, and A. N. Kulikov. "The dependence of reading parameters determined by standardized Russian-language test charts from age." Modern technologies in ophtalmology, no. 3 (May 14, 2024): 97–100. http://dx.doi.org/10.25276/2312-4911-2024-3-97-100.

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Background. In clinical ophthalmology, tests based on checking reading parameters are increasingly used. The development of a Russian-language test charts to evaluate reading parameters based on international standards with determining age-related reading standards will allow to use them to assess the dynamics of various diseases. Purpose. To determine the indicators of reading parameters in subjects of different age groups and to evaluate the relationship of the main indicators with age. Material and methods. We have developed Russian-language test charts to determine reading parameters in accordance with international standards. Reading parameters were investigated in 135 volunteers divided into 3 age groups: 18–39, 40–59 and 60–81 years old. The maximum reading speed, a critical print size and reading acuity were determined. Results. In the course of the study, age-related norms for the main reading parameters were determined. The maximum reading speed in the I, II and III groups was 192.5 ± 1.2, 180.6 ± 1.1 and 168.9 ± 0.8 words/min respectively. The critical print size in I, II and III groups was 0.14 ± 0.01, 0.24 ± 0.01 and 0.36 ± 0.01 LogMAR respectively. Reading acuity in groups was 0.009 ± 0.006, 0.075 ± 0.04 and 0.143 ± 0.005 LogMAR respectively. The differences between the studied indicators in I/II, I/III and II/III groups were statistically reliable (p < 0.05). A statistically significant negative correlation was obtained between maximum reading speed and age; the correlation coefficient was –0.61. Conclusion.The obtained read parameters can be used as indicative age standards. Keywords: maximum reading speed, reading acuity, visual acuity, critical print size, MNREAD acuity charts

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Zuo, Zhi, Anne Subgang, Alireza Abaei, et al. "Assessment of Longitudinal Reproducibility of Mice LV Function Parameters at 11.7 T Derived from Self-Gated CINE MRI." BioMed Research International 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/8392952.

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The objective of this work was the assessment of the reproducibility of self-gated cardiac MRI in mice at ultra-high-field strength. A group of adult mice (n=5) was followed over 360 days with a standardized MR protocol including reproducible animal position and standardized planning of the scan planes. From the resulting CINE MRI data, global left ventricular (LV) function parameters including end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), ejection fraction (EF), and left ventricular mass (LVM) were quantified. The reproducibility of the self-gated technique as well as the intragroup variability and longitudinal changes of the investigated parameters was assessed. Self-gated cardiac MRI proved excellent reproducibility of the global LV function parameters, which was in the order of the intragroup variability. Longitudinal assessment did not reveal any significant variations for EDV, ESV, SV, and EF but an expected increase of the LVM with increasing age. In summary, self-gated MRI in combination with a standardized protocol for animal positioning and scan plane planning ensures reproducible assessment of global LV function parameters.

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Pain, Oliver, Kylie P. Glanville, Saskia P. Hagenaars, et al. "Evaluation of polygenic prediction methodology within a reference-standardized framework." PLOS Genetics 17, no. 5 (2021): e1009021. http://dx.doi.org/10.1371/journal.pgen.1009021.

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The predictive utility of polygenic scores is increasing, and many polygenic scoring methods are available, but it is unclear which method performs best. This study evaluates the predictive utility of polygenic scoring methods within a reference-standardized framework, which uses a common set of variants and reference-based estimates of linkage disequilibrium and allele frequencies to construct scores. Eight polygenic score methods were tested: p-value thresholding and clumping (pT+clump), SBLUP, lassosum, LDpred1, LDpred2, PRScs, DBSLMM and SBayesR, evaluating their performance to predict outcomes in UK Biobank and the Twins Early Development Study (TEDS). Strategies to identify optimal p-value thresholds and shrinkage parameters were compared, including 10-fold cross validation, pseudovalidation and infinitesimal models (with no validation sample), and multi-polygenic score elastic net models. LDpred2, lassosum and PRScs performed strongly using 10-fold cross-validation to identify the most predictive p-value threshold or shrinkage parameter, giving a relative improvement of 16–18% over pT+clump in the correlation between observed and predicted outcome values. Using pseudovalidation, the best methods were PRScs, DBSLMM and SBayesR. PRScs pseudovalidation was only 3% worse than the best polygenic score identified by 10-fold cross validation. Elastic net models containing polygenic scores based on a range of parameters consistently improved prediction over any single polygenic score. Within a reference-standardized framework, the best polygenic prediction was achieved using LDpred2, lassosum and PRScs, modeling multiple polygenic scores derived using multiple parameters. This study will help researchers performing polygenic score studies to select the most powerful and predictive analysis methods.

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Storchak, Rupp, Möhring, and Stehle. "Determination of Johnson–Cook Constitutive Parameters for Cutting Simulations." Metals 9, no. 4 (2019): 473. http://dx.doi.org/10.3390/met9040473.

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The Johnson–Cook constitutive equation is very widely used for simulating cutting processes. Different methods are applied for establishing parameters of the constitutive equation. Based on the methods analysed in this study, two algorithms were worked out to determine the constitutive parameters for the prevailing conditions during cutting processes. In the first algorithm, all constitutive parameters were established simultaneously with standardized test methods. In the second algorithm, the constitutive parameters were established separately in accordance with the cutting conditions prevailing in machining processes. The developed methodology was verified with AISI 1045 heat-treatable steel and Ti10V2Fe3Al (Ti-1023) titanium alloy. The two materials were examined in standardized tensile and compression tests with varying strain rates and temperatures. In addition, the kinetic characteristics of the orthogonal cutting process were established. Based on the results obtained by experiment and the algorithms developed, the constitutive parameters for the cutting conditions were calculated. The parameters were used to determine the material model for simulating the orthogonal cutting process. The algorithms developed were verified by comparing the simulated and experimentally determined kinetic cutting characteristics, which confirmed their good quality.

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Morales-Espejel, Guillermo E., and Antonio Gabelli. "Rolling bearing performance rating parameters: Review and engineering assessment." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 15 (2020): 3064–77. http://dx.doi.org/10.1177/0954406220911395.

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The choice of a rolling bearing for a particular application relies on performance rating parameters as the static, the dynamic, and the fatigue limit load of bearings. The values of these parameters define the calculated performance of the bearing. Endurance testing of high-quality rolling bearings has been used for the development of rolling bearing performance standards like the ISO 281 and ISO 76 that are commonly used throughout the industry. However, standard test methods for the measurement and validation of load ratings of rolling bearings are not available in the standards. This leads to the undifferentiated use of the “status of the art” standardized performance to the very large variety of rolling bearing types and qualities that are produced today. The current paper revisits the origin, definition, and development of rolling bearing performance parameters. A numerical study for the determination process of bearing load ratings is carried out. The results are compared with standardized values and values quoted by bearing manufacturers. This provides an overview of the load rating practices that are in use. The limitations and possible improvements of the present methodology are discussed.

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Khadka, Narayan, and Bharat Ratra. "Determining the range of validity of quasar X-ray and UV flux measurements for constraining cosmological model parameters." Monthly Notices of the Royal Astronomical Society 502, no. 4 (2021): 6140–56. http://dx.doi.org/10.1093/mnras/stab486.

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ABSTRACT We use six different cosmological models to study the recently released compilation of X-ray and UV flux measurements of 2038 quasars (QSOs) which span the redshift range 0.009 ≤ z ≤ 7.5413. We find, for the full QSO data set, that the parameters of the X-ray and UV luminosities LX−LUV relation used to standardize these QSOs depend on the cosmological model used to determine these parameters, i.e. it appears that the full QSO data set includes QSOs that are not standardized and so cannot be used for the purpose of constraining cosmological parameters. Subsets of the QSO data, restricted to redshifts z ≲ 1.5–1.7 obey the LX−LUV relation in a cosmological-model-independent manner, and so can be used to constrain cosmological parameters. The cosmological constraints from these lower z, smaller QSO data subsets are mostly consistent with, but significantly weaker than, those that follow from baryon acoustic oscillation and Hubble parameter measurements.

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