The accuracy instrument

The purpose of the study "Monitoring surface water bodies changes from sentinel-2A imagery with modified normalized difference water index: Application in Dalat, Lam Dong, Viet Nam" is to identify surface water body changes using Sentinel-2 MSI (Multi-Spectral Instrument) data, one of the latest types of remote sensing satellite data. The results of the research show that by using Sentinel-2 MSI imagery, MNDWI (Modified Normalized Water Index) is the appropriate parameter to detect surface water areas in the studied area, with an overall accuracy > 0.92 and Kappa coefficient > 0.84.

10p tukhauquantuong1011 22-04-2024 4 2   Download

Surgical instrument detection is a vital task in analyzing images of laparoscopic surgery. This study introduces a strong method for detecting surgical instruments using the YOLOv8 model. The evaluation results proves that this model exhibits high accuracy and outperforms previous approaches. Additionally, a web interface is developed for convenient remote monitoring of the instruments.

7p vimichaelfaraday 28-12-2023 5 4   Download

This thesis presents the design of a test asset system capable of testing GNSS receivers for speed accuracy and the Uncertainty of Measurements (UOM) analysis for this system. The test asset system utilises a variety of engineering solutions and is capable of maintaining high accuracy benchmarks in speed measurements. The test asset system has an UOM equal 0.4 km/h for the entire range of speeds used for GNSS speed testing. The system was designed, assembled and tested to ensure the system maintains its integrity and capability to test GNSS receivers for speed measurement.

191p runthenight04 02-02-2023 4 1   Download

Nanopore sequencing is a rapidly maturing technology delivering long reads in real time on a portable instrument at low cost. Not surprisingly, the community has rapidly taken up this new way of sequencing and has used it successfully for a variety of research applications.

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Adsorptive cathodic stripping voltammetric determination of aluminum at ng mL −1 levels in salt samples based on the metal complexation with Calcon (1-(2-hydroxynaphthylazo)-2 naphthol-4-sulfonic acid) and the subsequent adsorptive deposition onto a hanging mercury drop electrode was studied. Central composite design was used as a design method. Several chemical and instrumental parameters (pH, ligand concentration, deposition time, deposition potential, and complexing time) were involved in the experimental design.

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Internal fixation is one treatment for femoral neck fracture. Some devices and techniques reported improved accuracy and decreased fluoroscopic time. However, these are not widely used nowadays due to the lack of available special instruments and techniques.

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The design and application of assisted instrumentation for internal fixation of femoral neck fractures with multiple screws are still evolving. A novel guide based on a femoral neck section was designed to improve the accuracy of screw placement, and its efficacy was evaluated.

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During total hip arthroplasty (THA), the accurate placement of the femoral components is an important determinant of the success of the procedure. This study assessed the accuracy of cemented stem placement using a new angle-measuring instrument.

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The product produced is a digital-based instrument of ball placement accuracy for table tennis by using an electrical circuit automatically arranged when the ball touches the instrument, producing an output data in the form of an automatic count in accordance with the number of balls that touch the tool. Results of output data will be displayed on the LCD display, so that users can immediately record the data when the ball touches the accuracy instrument.

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The study considers three dimensions of ethics, namely; organization culture ethics, leadership ethics, and training ethics. Employees on the managerial positions are selected as the respondents.

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For the first time in economic research, the present experimental study confronted participants with the task to predict stock prices ex ante in order to analyze the interrelation of the behavioral anomalies overconfidence and correlation neglect. The study shows that the participants considerably overestimate their accuracy of forecasting (overconfidence). Almost half of all participants (42.2%) disregard the correlation among return developments for different financial instruments (correlation neglect).

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We present the ambitions of the SWUSV (Space Weather and Ultraviolet Solar Variability) Microsatellite Mission that encompasses three major scientific objectives: (1) Space Weather including the prediction and detection of major eruptions and coronal mass ejections (LymanAlpha and Herzberg continuum imaging); (2) solar forcing on the climate through radiation and their interactions with the local stratosphere (UV spectral irradiance from 180 to 400 nm by bands of 20 nm, plus Lyman-Alpha and the CN bandhead); (3) simultaneous radiative budget of the Earth, UV to IR, with an accuracy better t...

17p kethamoi1 17-11-2019 11 1   Download

Neutron scattering applications often require discriminating the elastic contribution from the inelastic contribution. For this purpose, correlation spectroscopy offers an effective tool with both pulsed and continuous neutron sources as well as several advantages: the analysis of the neutron velocity distribution can be carried out with a duty factor of 50%, independently on the resolution value; the best statistical accuracy for spectra where the elastic part encompasses most of the integrated intensity is provided.

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Defining the limits of accuracy for all measuring instruments. The limits of measurement must be better than the required limits for the product, process and safety. If the measuring instrument fails to meet calibration limits then the product, process or safety could have been compromised. If a factor of two is set, and if the measuring instrument fails calibration there is a margin allowed before any quality issues are raised. The factor should be as large as possible, the larger the factor the greater the safety margin.

19p namde04 03-05-2013 43 3   Download

Finally, we refine the accuracy of the computed per- formance model through experimental sampling. We use statistical interpolation between computed and ex- perimental sample points in order to re-approximate the per-application performance models, thus dynamically refining the model. We experimentally show that, by us- ing this method, convergence towards near-optimal con- figurations can be achieved in mere minutes, while an exhaustive exploration of the multi-dimensional search space, representing all possible partitioning configura- tions, would take weeks, or even months.

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CO measurement options include bag collection and lab analysis, colour-change diffusion tubes and electro-chemical monitors. PM measurement options include gravimetric monitors (pump and filter method) and light-scattering devices. The advantages and disadvantages of each of these methods are discussed, including cost, ease-of-use, accuracy, size detection and time-keeping. The choice of method depends on the context, i.e. the purpose of the project or programme, the capacity of staff and available financial and human resources.

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I have been associated with uncertainty calculations for quite sometime. Asia Metrology Program (APMP) took interest in unification of expressing the measurement results along with uncertainty. In those days the uncertainty components were divided according to source of errors. The errors were named as random and systematic errors. Hence components of uncertainty were named random uncertainty and systematic uncertainty. Around 1980, BIPM took initiative by circulating questioners to the countries who were members of Metre Convention.

342p camchuong_1 04-12-2012 64 4   Download

Over the past decade, technical innovation and evolution in computer-centered measurement systems have led to significant performance advances and economies of scale from manufacturing processes to biotechnology laboratories that share multisensor information system common denominators. This book provides a definitive instrumentation circuit and system reference, supported by 46 tables of engineering data, that demonstrates a composite, error-modeled design methodology for implementing defined accuracy, computer integrated measurement systems.

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The purpose of Measurement, Instrumentation, and Sensors Handbook CRCnetBase 1999 is to provide a reference that is both concise and useful for engineers in industry, scientists, designers, managers, research personnel and students, as well as many others who have measurement problems. The CD-ROM covers an extensive range of topics that comprise the subject of measurement, instrumentation, and sensors. The CD-ROM describes the use of instruments and techniques for practical measurements required in engineering, physics, chemistry, and the life sciences.

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Today’s control system designers face an ever-increasing “need for speed” and accuracy in their system measurements and computations. New design approaches using microcontrollers and DSP are emerging, and designers must understand these new approaches, the tools available, and how best to apply them. This practical text covers the latest techniques in microcontroller-based control system design, making use of the popular MSP430 microcontroller from Texas Instruments.

329p nhulan0908 30-09-2012 165 64   Download