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338 articles for “Measurements”
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Research ArticleOpen accessIn the keywordsEidonomy of Apis mellifera Workers and Drones in ApiariesAnuarbek Temirbekovich Bissembayev, Natalia Evgenievna Zemskova, Vener Nurullovich Sattarov et al.In modern ecosystems, the increasing anthropogenic load, the absence or an insufficient number of scientifically based integrated programs and measures for the reproduction and distribution of local bee populations, as well as the preservation of their habitat territories; unsystematic hybridization leads to the transformation of the quantitative and qualitative composition of bees in the regions. In connection with the presented … …OnLine Journal of Biological Sciences, Vol. 23, Issue 2 · 16 Mar 2023 · 5,110 accessesView PDFCite
Research ArticleOpen accessIn the keywordsTHE ADVERSE EFFECT OF STEEL PARTICLE CONTAMINANTS ON FATIGUE LIFE OF GREASE LUBRICATED BALL BEARINGSA. Stathis, Th. Costopoulos, D. Koulocheris, K. RaptisThe rating life of ball bearings is reduced when hard particle contaminants are present in the lubricant. Usually, this life reduction is taken into account in the calculation of modified rating life by using the contamination factor through a general characterization of the lubrication conditions. However, the impact of contaminant’s variables such as size, hardness and concentration level has to … …American Journal of Applied Sciences, Vol. 11, Issue 9 · 14 Jul 2014 · 6,991 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAirway Metrics, Anatomy and Growth Performance of Pigs Reared Indoors and OutdoorsChakia Joi McClendon, Sherrell Pettiford, Dawn Conklin et al.While the swine industry has made incredible strides to improve ventilation, air quality in confinement buildings remains an issue. The goal of this study is to characterize correlation between large airway metrics and growth performance in piglets reared indoors and outdoors on pasture. Three experimental trials were conducted: Trial 1 included three breed types that were strictly raised indoors, Tamworth … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 4 · 24 Sep 2013 · 7,582 accessesView PDFCite
Research ArticleOpen accessIn the keywordsUncertainty and its Impact on the Quality of MeasurementMartin Halaj, Adel Elahdi M. YahyaThe imposition of practice, the current world, the laboratory measurement, calibration should be approved by points of credit to national or international and should be compatible with the requirements specification (ISO 17025) for the adoption of efficient laboratories. Those requirements were included the testing process or scale limits to doubt that mentioned in the measurement certificate, which recognizes the customer … …American Journal of Engineering and Applied Sciences, Vol. 5, Issue 2 · 4 Jul 2012 · 8,276 accessesView PDFCite
Research ArticleOpen accessIn the keywordsExperimental Study of Load Sharing in Roller-Bearing Contact by Caustics and PhotoelasticityKonstandinos G. Raptis, George A. Papadopoulos, Theodore N. Costopoulos, Andonios D. TsolakisProblem statement: In this study a comprehensive methodology for calculating load sharing in Roller-bearing contact was presented based on the experimental stress-optical method of caustics and Photoelasticity. Approach: The theoretical equations describing the geometry of transmitted caustic in relation to the length of the contact zone were derived and a simple mathematical set of equations correlating the maximum diameter of … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 2 · 13 Jul 2011 · 8,397 accessesView PDFCite
Research ArticleOpen accessIn the keywordsIsolated Malay Digit Recognition Using Pattern Recognition Fusion of Dynamic Time Warping and Hidden Markov ModelsS.A.R. Al-Haddad, S.A. Samad, A. Hussain, K.A. IshakThis paper is presents a pattern recognition fusion method for isolated Malay digit recognition using Dynamic Time Warping (DTW) and Hidden Markov Model (HMM). The aim of the project is to increase the accuracy percentage of Malay speech recognition. This study proposes an algorithm for pattern recognition fusion of the recognition models. The endpoint detection, framing, normalization, Mel Frequency Cepstral … …American Journal of Applied Sciences, Vol. 5, Issue 6 · 30 Jun 2008 · 7,049 accessesView PDFCite
Research ArticleOpen accessIn the keywordsFabrication and Testing of a Medical Surgical Instrument Capable of Detecting Simulated Embedded LumpsJavad Dargahi, Siamak Najarian, Reza Ramezanifard, Farhad Tabatabai GhomsheA novel endoscopic grasper is being fabricated and tested. This grasper can be used in detecting lumps or tumors in biological tissues. The detailed fabrication process of the tactile sensor has been discussed. Custom-made sensors were integrated with the jaws of the endoscopic grasper and objects with known tactile features were tested by the designed grasper. Different experiments were performed … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 6,999 accessesView PDFCite
Research ArticleOpen accessIn the abstractMonitoring the Rate of Change at Urualla Gully Erosion Site Using GIS and Remote Sensing MethodologySylvanus IroUrualla gully erosion was monitored using GIS and remote sensing in Urualla, Ideato North Imo State Nigeria. The objective is to calculate the rate of change of Urualla gully erosion and identify measures to control its growth. The study's data came from primary and secondary sources, such as Google Earth imageries, DEMs, and in situ measurements. Google Earth was used … …American Journal of Environmental Sciences, Vol. 19, Issue 5 · 28 Feb 2024 · 5,314 accessesView PDFCite
Research ArticleOpen accessIn the abstractETFs in European Emerging Markets: Performance, Risk and SustainabilityRosa Adamo, Domenica Federico, Antonella NotteOver the past few decades, Exchange-Traded Funds (ETFs) have become one of the most innovative financial instruments traded in financial markets. The aim is to offer an overview of the ETF market in Emerging Europe through a study on performance, risks and sustainability. The research examines the costs, the performance of the fund over calendar year periods (annual return), the … …American Journal of Economics and Business Administration, Vol. 15, Issue 1 · 14 Dec 2023 · 6,300 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Indoor CO2 Concentration Using Split Ventilation Systems as an Indicator of COVID-19 TransmissionManuel Batista, Oscar Bulgim, Ericka Matus et al.We measured the indoor CO2 concentration in occupied areas with ventilation systems that recirculate air without an external air supply. The average time required to achieve the highest probability of contagion was also measured based on the number of participants in the group. Three different experimental groups were evaluated: Group One (G1), which included 5 participants; Group Two (G2), with … …American Journal of Applied Sciences, Vol. 20, Issue 1 · 23 Aug 2023 · 6,051 accessesView PDFCite