scholarly journals Analysis on the significance of optimizing the measurement standard management system in power industry

2021 ◽  
Vol 236 ◽  
pp. 04005
Author(s):  
Yudan Liu ◽  
Dan Li ◽  
Yidan Zhang ◽  
Wenyu Cheng ◽  
Ke Wang
Keyword(s):  
Management System ◽  
Continuous Optimization ◽  
Power Industry ◽  
Measurement Unit ◽  
Measurement Standard ◽  
Unit System ◽  
Technical Ability ◽  
Standard Management ◽  
Measurement Results ◽  
National Measurement

Measurement standard management is an important link to ensure the unity of national measurement unit system and the consistency and accuracy of value transfer. The establishment of measurement standard management system aims to provide technical support for traceability of social measurement. On the basis of ensuring the unity of national measurement unit system and the accuracy and reliability of measurement value, it undertakes the task of legal measurement. Its management level, technical ability and service quality not only directly determine the correctness of the measurement results, but also have a crucial impact on the social activities related to the measurement results. Based on the analysis of the current situation of measurement standard management in power industry, this paper expounds the significance of continuous optimization of measurement standard management system and the results achieved.

State special primary acceleration measurement standard for gravimetry GET 190-2019

2020 ◽  
pp. 3-8
Author(s):  
L.F. Vitushkin ◽  
F.F. Karpeshin ◽  
E.P. Krivtsov ◽  
P.P. Krolitsky ◽  
V.V. Nalivaev ◽  
...  
Keyword(s):  
High Precision ◽  
Free Fall ◽  
Measurement Range ◽  
Measurement Standard ◽  
Acceleration Measurement ◽  
Measurement Systems ◽  
Free Fall Acceleration ◽  
Investigation Methods ◽  
Measurement Results ◽  
Upper Level

The State special primary acceleration measurement standard for gravimetry (GET 190-2019), its composition, principle of operation and basic metrological characteristics are presented. This standard is on the upper level of reference for free-fall acceleration measurements. Its accuracy and reliability were improved as a result of optimisation of the adjustment procedures for measurement systems and its integration within the upgraded systems, units and modern hardware components. A special attention was given to adjusting the corrections applied to measurement results with respect to procedural, physical and technical limitations. The used investigation methods made it possibled to confirm the measurement range of GET 190-2019 and to determine the contributions of main sources of errors and the total value of these errors. The measurement characteristics and GET 90-2019 were confirmed by the results obtained from measurements of the absolute value of the free fall acceleration at the gravimetrical site “Lomonosov-1” and by their collation with the data of different dates obtained from measurements by high-precision foreign and domestic gravimeters. Topicality of such measurements ensues from the requirements to handle the applied problems that need data on parameters of the Earth gravitational field, to be adequately faced. Geophysics and navigation are the main fields of application for high-precision measurements in this field.

Investigation of the Accuracy of Reference Instruments for Measuring Vertical Angles by Reference Method of Their Calibration

2020 ◽  
pp. 3-14
Author(s):  
O. M. Samoylenko ◽  
O. V. Adamenko ◽  
B. P. Kukareka
Keyword(s):  
Horizontal Plane ◽  
Opposite Sign ◽  
Reference Method ◽  
Angle Measurement ◽  
Measurement Standard ◽  
Vertical Angle ◽  
Measurement Standards ◽  
Measurement Results ◽  
Electronic Measurement ◽  
Systematic Biases

Reference method for simultaneous calibration of the three and more measurement standards for vertical angle measurement is developed. This method can to use for obtaining the systematic biases of the vertical angles measurements for each of the measuring standards relative of the horizontal plain was averaged from measurement results in time their calibration or comparison. For realization of the reference method was developed the autocollimationel electronic measurement standard for the automatization measurement of the vertical angles SeaLineZero_Standard™ (SLZ_S™). Summary standard deviation (k=1) of the vertical angle measurement relative the horizontal plane, from the results of their calibration by reference method, is not more 0,07ʺ…0,15ʺ. This result was obtained without the use the systematic biases, for each measurement standards, as measurements corrections (with opposite sign). The measuring standards, that were developed and researched, are necessary for obtaining the systematic biases of the vertical angle measurement for total stations and theodolites, that have the normed standard error 0,5ʺ and 1ʺ, when these instruments are calibrating.

scholarly journals Residue and Agronomic Management to Reduce the Continuous Corn Yield Penalty

Agronomy ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 567
Author(s):  
Vogel ◽  
Below
Keyword(s):  
Management System ◽  
Crop Production ◽  
Field Experiments ◽  
High Volume ◽  
Residue Management ◽  
Yield Potential ◽  
Corn Yield ◽  
Continuous Corn ◽  
Standard Management ◽  
Yield Penalty

Accelerated residue degradation and nutrient cycling will be necessary to maximize yield potential in corn (Zea mays L.) grown continuously and in other high-volume residue situations. This study aimed to test if residue management and agronomic inputs could lessen the continuous corn yield penalty (CCYP) compared to a corn following soybean [Glycine max (L.) Merr.] rotation. Field experiments conducted during 2017 and 2018 at Champaign, IL, USA compared plots of 15th year continuous corn to long-term corn-soybean rotation plots. The previous year’s corn crop residue was either downsized (chopped) or harvested with standard knife rollers, with further chemical management of either a biocatalyst or ammonium sulfate, or it was left untreated. A standard management system of 79,000 plants ha−1 and a base rate of nitrogen fertilizer was compared to an intensive management system of 111,000 plants ha−1 with additional fertilizer and a foliar fungicide. Although continuous corn cropping stress was not detected until R2 (kernel blister stage), the CCYP was 1.30 Mg ha−1. Sizing residue enhanced overwinter residue decomposition and increased yield by 0.31 Mg ha−1 regardless of rotation and by 0.53 Mg ha−1 in continuous corn. Intensive inputs in combination with residue sizing increased grain yield of continuous corn by 1.15 Mg ha−1 over standard-management rotated yields. Therefore, combining mechanical and agronomic managements can reduce corn residue and the CCYP for more sustainable crop production.

Preparation of high-accuracy reference gas samples for proficiency testing

2016 ◽  
Vol 56 (2) ◽  
pp. 609
Author(s):  
Damian Smeulders
Keyword(s):  
Natural Gas ◽  
Proficiency Testing ◽  
Calorific Value ◽  
International Standards ◽  
Iso 17025 ◽  
National Measurement Institute ◽  
Mandatory Requirement ◽  
Measurement Results ◽  
National Measurement ◽  
Gas Coal

Participation in proficiency testing is a mandatory requirement for laboratories that are accredited to ISO 17025, as the process of proficiency testing allows quality issues and biases that would lead to wrong measurement results to be identified and corrected. Since 2005 the Australian Government National Measurement Institute has delivered proficiency testing for various forms of natural gas that are produced in Australia, including pipeline natural gas from central and Western Australia, raw natural gas, coal seam gas, coal mine gas, LNG, and feed gas for LNG plants. The gas samples for proficiency testing are manufactured and verified by the National Measurement Institute according to international standards to have the highest levels of accuracy plus international comparability. Participants in natural gas proficiency testing include specialty gas companies, refineries, pipeline operators, gas producers, LNG plants, and independent gas testing laboratories. Many companies have a long history of participation that demonstrates continual improvement in the accuracy of their measurement results. This extended abstract gives an insight into the present state of the measurements of composition and calorific value of natural gas, and whether the measurements meet the international benchmarks for accuracy for LNG export. In addition, the extended abstract details the manufacture of the gas samples, and how proficiency testing studies operate, as well as examples where companies have improved their measurement performance across time.

scholarly journals Hydroxyl radicals in the tropical troposphere over the Suriname rainforest: airborne measurements

2010 ◽  
Vol 10 (8) ◽  
pp. 3759-3773 ◽  
Author(s):  
M. Martinez ◽  
H. Harder ◽  
D. Kubistin ◽  
M. Rudolf ◽  
H. Bozem ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Tropical Rainforest ◽  
Measurement Unit ◽  
Hydrocarbon Emissions ◽  
Sources And Sinks ◽  
Airborne Measurements ◽  
Mixing Ratios ◽  
Photolysis Frequencies ◽  
Calibration Methods ◽  
Measurement Results

Abstract. Direct measurements of OH and HO2 over a tropical rainforest were made for the first time during the GABRIEL campaign in October 2005, deploying the custom-built HORUS instrument (HydrOxyl Radical measurement Unit based on fluorescence Spectroscopy), adapted to fly in a Learjet wingpod. Biogenic hydrocarbon emissions were expected to strongly reduce the OH and HO2 mixing ratios as the air is transported from the ocean over the forest. However, surprisingly high mixing ratios of both OH and HO2 were encountered in the boundary layer over the rainforest. The HORUS instrumentation and calibration methods are described in detail and the measurement results obtained are discussed. The extensive dataset collected during GABRIEL, including measurements of many other trace gases and photolysis frequencies, has been used to quantify the main sources and sinks of OH. Comparison of these measurement-derived formation and loss rates of OH indicates strong previously overlooked recycling of OH in the boundary layer over the tropical rainforest, occurring in chorus with isoprene emission.

scholarly journals SIMULATION OF DIRECT GEOREFERENCING FOR GEOMETRIC SYSTEMATIC CORRECTION ON LSA PUSHBROOM IMAGER

2017 ◽  
Vol 14 (1) ◽  
pp. 71
Author(s):  
Muchammad Soleh ◽  
Wismu Sunarmodo ◽  
Ahmad Maryanto
Keyword(s):  
Inertial Measurement Unit ◽  
Remote Sensing Data ◽  
Image Data ◽  
Measurement Unit ◽  
Array Detector ◽  
Ground Sample ◽  
Accuracy Requirement ◽  
Systematic Correction ◽  
Measurement Results ◽  
Camera Sensor

LAPAN has developed remote sensing data collection by using a pushbroom linescan imager camera sensor mounted on LSA (Lapan Surveillance Aircraft). The position accuracy and orientation system for LSA applications are required for Direct Georeferencing and depend on the accuracy of off-the-shelf integrated GPS/inertial system, which used on the camera sensor. This research aims to give the accuracy requirement of Inertial Measurement Unit (IMU) sensor and GPS to improve the accuracy of the measurement results using direct georeferencing technique. Simulations were performed to produce geodetic coordinates of longitude, latitude and altitude for each image pixel in the imager pushbroom one array detector, which has been geometrically corrected. The simulation results achieved measurement accuracies for mapping applications with Ground Sample Distance (GSD) or spatial resolution of 0,6 m of the IMU parameter (pitch, roll and yaw) errors about 0.1; 0.1; and 0.1 degree respectively, and the error of GPS parameters (longitude and latitude) about 0.00002 and 0.2 degree. The results are expected to be a reference for a systematic geometric correction to image data pushbroom linescan imager that would be obtained by using LSA spacecraft.

scholarly journals ISO 9001 Standard Management System Certification – Data Analysis for Sectors by Country

2019 ◽  
Vol 1 (1) ◽  
pp. 162-169
Author(s):  
Katarzyna Hys
Keyword(s):  
Data Analysis ◽  
Management System ◽  
Research Method ◽  
Iso 9001 ◽  
Comparative Analyses ◽  
Standard Management ◽  
The World ◽  
Desk Research

Abstract The purpose of the paper is to analyse and demonstrate the trends in the scope of data concerning the number of ISO 9001 certificates incorporated in companies around the world with consideration of market division into 39 sectors. The study utilised the desk research method for analysing the available sources of data for the studied problem, especially covering their compilation, mutual verification, processing and reasoning. Then, multi-dimensional comparative analyses were conducted for the obtained results within a time framework of 1998-2017. As result of the conducted analyses, leading sectors in particular countries in terms of the number of incorporated ISO 9001 series standards were established. This enabled identifying the tendencies and determining the further directions of change. The paper is original in that it is based on analysing data within an industry framework in the period of nine years, identifying existing trends and establishing specific cases (countries and industries) for which the ISO 9001 standards are common and for which they are a niche.

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