scholarly journals THE GENERALIZED VARIANCE ALGORITHM APPLICATION IN MULTIDIMENSIONAL STATISTICAL CONTROL OF THE PROCESS BASED ON INDIVIDUAL OBSERVATIONS

2021 ◽  
Vol 3 (65) ◽  
pp. 61-66
Author(s):  
Anastasiya A. Frolova ◽  
Keyword(s):  
Comparative Analysis ◽  
Average Level ◽  
Statistical Control ◽  
Practical Application ◽  
Generalized Variance

In practice, the use of instantaneous samples for statistical control of the process is often impossible due to technical conditions or is not economically feasible. In this case, the process is monitored by individual observations. To control the average level of a multiparametric process based on the Hotelling algorithm, appropriate methods have been developed, but when controlling multidimensional scattering based on the generalized variance algorithm, a number of problems arise. Various approaches to the estimation of the generalized variance are proposed in the article, and their comparative analysis is carried out. The practical application of the proposed algorithms is also considered.

Stimulation and limits of cloud-based ITSM system application by Russian companies

2021 ◽  
Vol 19 (10) ◽  
pp. 2001-2010
Author(s):  
Yurii P. KISHKOVICH
Keyword(s):  
Information Systems ◽  
Comparative Analysis ◽  
Financial Performance ◽  
System Application ◽  
Management System ◽  
Business Processes ◽  
Enterprise Management ◽  
Practical Application ◽  
Russian Economy ◽  
Enterprise Management System

Subject. This article discusses the use of information systems in various spheres of the Russian economy. Objectives. The article aims to assess the prospects for the use of cloud-based ITSM systems by Russian medium-sized and large companies. Methods. For the study, I used a comparative analysis. Results. The article finds that the cloud-based ITSM system reduces the time of business processes significantly and saves money resources. Conclusions. The practical application of cloud-based ITSM systems expands the opportunities and capabilities of medium-sized and large enterprises significantly and contributes to improving the financial performance of their activities. The enterprise management system is an important factor the implementation of these systems depends on.

scholarly journals IMPROVING THE EFFICIENCY OF STATISTICAL CONTROL OF HYDRO-UNIT VIBRATIONS

2020 ◽  
Vol 61 (3) ◽  
pp. 101-107
Author(s):  
Anastasiia V. Alekseeva ◽  
Keyword(s):  
Special Kind ◽  
Fixed Time ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Statistical Control ◽  
Statistical Process ◽  
Hydraulic Unit ◽  
Generalized Variance ◽  
Vibration Data ◽  
Process Failure

Some techniques of statistical process control can be applied in investigating an object for likely defects. In this regard, the multidimensional scattering is monitored with the use of a generalized variance algorithm. At fixed time intervals samples of observations are recorded, according to which the values of the determinant of covariance matrix (the generalized variance) are calculated. The corresponding point, falling outside the borders of control chart, indicates the process failure. The test results based on vibration data obtained from the hydraulic unit at the Krasnopolianskaia Hydroelectric Power Station showed that the algorithm of the generalized variance has an insufficient quick response relating to both gradual and spasmodic changes in the scattering level. To make the monitoring process more efficient, the following techniques have been suggested. The first one detects defects by analyzing special kind structures on the generalized variance chart. The second technique applies the warning borders on the chart and the third one implies an algorithm of exponentially weighted moving averages for generalized variance. All the tests revealed that the search for nonrandom structures on the generalized variance chart is most effective for the early detection of changes in the scattering process.

scholarly journals Humidity and comparative analysis of durability index in pellet of balanced foods for birds

2019 ◽  
pp. 18-23
Author(s):  
Irma Vallejo-Sartorius ◽  
Leticia Rendon-Sandoval ◽  
Esteban Gutierrez-Peña
Keyword(s):  
Comparative Analysis ◽  
Economic Impact ◽  
Processing Plant ◽  
Statistical Control ◽  
Feed Processing ◽  
Healthy Development ◽  
Durability Index

The research was carried out to improve the humidity parameters and durability index in the balanced feed for poultry in flour and pellet, to guarantee the quality and avoid contamination in the mycotoxin finished product. Samples of flours and pellets were used for four months to evaluate and standardize the pelletization process, to produce balanced food, which is intended for bird consumption in each of the breeding, posture and fattening phases, guaranteeing them a healthy development. In this investigation, we worked with two pelletizing machines of model 700 and model 702 to keep a statistical control of humidity and durability index (IDP), to avoid product losses in the pelletizing process. The contribution of the present investigation was to reduce the economic impact of the feed processing plant since reprocesses were significantly reduced.

scholarly journals SELECTION OF THE PARAMETERS OF THE GENERALIZED DISPERSION ALGORITHM FOR MULTIVARIATE STATISTICAL CONTROL OF THE PROCESS SCATTERING

2021 ◽  
Vol 23 (1) ◽  
pp. 79-83
Author(s):  
A.V. Alekseeva ◽  
◽  
V.N. Klyachkin ◽  
Keyword(s):  
Performance Indicators ◽  
Optimization Problem ◽  
Unstable State ◽  
Statistical Control ◽  
Multivariate Statistical ◽  
Generalized Variance ◽  
Process Indicators ◽  
The Stability ◽  
Process Disturbances ◽  
Selection Of

To control the stability of the functioning of aviation equipment units based on the results of monitoring a group of indicators, methods of statistical processes control can be used. In the presence of significant correlations between performance indicators, multivariate methods are used. In this case, the control of the average level of the process is carried out on the basis of the Hotelling algorithm, the control of multivariate scattering is carried out using the generalized variance algorithm. If, according to the conditions of the process, it is necessary to ensure the fastest detection of a violation, then the optimization problem of finding such values of the sample size, sampling frequency and position of the control boundaries is solved that minimizes the average time of the unstable state of the process. The initial data are the number of process indicators monitored, the target value of the generalized variance (estimated from experimental data), the characteristic of the permissible increase in scattering, the intensity of process disturbances (parameter of the Poisson distribution); time to search for a violation after its detection and time to calculate the sample element.

scholarly journals Análisis de esquemas de metadatos para catalogación de tesis y proyectos de investigación

2018 ◽  
Vol 5 (1) ◽  
pp. 1-8
Author(s):  
Milton Campoverde Molina ◽  
Jenny Vizñay Durán ◽  
Silvia Vintimilla Jara
Keyword(s):  
Operating System ◽  
Comparative Analysis ◽  
Virtual Machine ◽  
Average Level ◽  
Research Projects ◽  
Dublin Core ◽  
Catholic University ◽  
El Sistema ◽  
The One ◽  
The City

Este artículo revela el análisis comparativo de los esquemas de metadatos MARC21, MODS, DUBLIN CORE y OPAC en la catalogación y publicación de tesis y proyectos de investigación en el repositorio DSpace. Inicia con la elaboración y aplicación de una encuesta a los administradores bibliotecarios de las instituciones: Universidad de Cuenca, Universidad del Azuay, Universidad Católica de Cuenca, Universidad Politécnica Salesiana y la Biblioteca Municipal de la ciudad de Cuenca, con el fin de determinar el esquema de metadatos empleado en la catalogación de tesis y proyectos de investigación. Luego se realiza la instalación de una Máquina Virtual bajo el sistema operativo Ubuntu, utilizando la herramienta tasksel se instalan los requisitos previos a la instalación de DSpace, configuración del repositorio DSpace y publicación de los contenidos de tesis y proyectos de investigación dentro del repositorio. Se concluye que el metadato que predomina dentro de los repositorios DSpace es el Dublin Core y es el que mejor se adecua para la catalogación de tesis y proyectos de investigación, en las pruebas con estudiantes y profesores en los tres aspectos: técnico, de uso y funcional. El esquema de metadato Dublin Core en el repositorio DSpace es calificado como excelente, presentando un nivel medio de complejidad en el registro de documentos. ABSTRACT This article reveals the comparative analysis of metadata schemas MARC21, MODS, DUBLIN CORE and OPAC in cataloging and publication of thesis and research projects in the DSpace repository. It begins with the development and implementation of a survey to library administrators of the following institutions: University of Cuenca, Azuay University, Catholic University of Cuenca, Salesian University and the Municipal Library of the city of Cuenca, in order to determine the schema metadata used in cataloging thesis and research projects. Then a virtual Machine was installed under the Ubuntu operating system. By using the tasksel tool the prerequisites are installed previous to the installation of DSpace, DSpace repository configuration and publication of the contents of thesis and research projects within the repository. It is concluded that the metadata that prevails within the DSpace repositories is the Dublin Core and it is the one best fits for cataloging thesis and research projects, in tests with students and teachers in the three aspects: technical, use and functional. The Dublin Core metadata schema in the repository DSpace is rated as excellent, having an average level of complexity in registration documents.

scholarly journals Comparative assessment of apricot seedlings for drought resistance and winter hardiness in Dagestan

2019 ◽  
pp. 199-207
Author(s):  
D. M. Anatov ◽  
Z. M. Asadulaev ◽  
R. M. Osmanov
Keyword(s):  
Comparative Analysis ◽  
Linear Relationship ◽  
Water Content ◽  
Drought Resistance ◽  
Winter Hardiness ◽  
Comparative Assessment ◽  
Average Level ◽  
Significance Level ◽  
Shoot Damage ◽  
Water Holding

The article presents a comparative analysis of the water-holding ability of leaves (WAL) and its connection with the freezing of the shoots of apricot seedlings of various ecological and geographical origins. A non-linear relationship was found between the WAL of the leaves of apricot seedlings and the freezing of the shoots. It was revealed that seedlings with shoot damage to the average level, WAL are higher (12-15% water content in leaves after 24 hours) than those with slightly submerged (0.8-6%). In severely freezing genotypes (freezing 60-100%), on the contrary, is lower than winter-hardy. The correlation before the peak was 0.79 *, after the peak -0.98 *, significant at the 0.05 significance level.

scholarly journals The amount of heat input to the weld per unit length and per unit volume

2021 ◽  
Vol 1199 (1) ◽  
pp. 012067
Author(s):  
J Winczek ◽  
M Gucwa ◽  
K Makles ◽  
M Mičian ◽  
A Yadav
Keyword(s):  
Comparative Analysis ◽  
Welded Joints ◽  
Heat Input ◽  
Unit Volume ◽  
Unit Length ◽  
Practical Application ◽  
Actual Amount ◽  
Volume Unit ◽  
The Individual ◽  
Volume Method

Abstract This paper presents a comparative analysis of heat input per unit length and per unit volume for selected methods of welding. The purpose of the analysis is to assess the usability of calculating heat input per volume unit. The interpretation of heat input per unit length according to the standards: QW-409.1 of ASME IX, EN ISO 1011-1 is discussed. The concept of calculating heat input per unit volume is described. For exemplary padded welds and spot welded joints, the heat input values were calculated in accordance with the above-mentioned standards and based on the concept of heat input per unit volume. The study showed a lack of consistency between the individual standards in the interpretation of the heat input. In addition, the practical application of the heat input per unit volume method in calculating the actual amount of heat introduced into the weld was justified.

scholarly journals COMPARATIVE ANALYSIS OF LIVELIHOOD SECURITY OF THE FARMERS PRACTICING DIFFERENT FARMING SYSTEMS IN MANDYA DISTRICT OF KARNATAKA

2021 ◽  
Vol 21 (no 1) ◽  
Author(s):  
Shwetha N.V ◽  
Sharad Sachan ◽  
Y. N. Shivalingaiah
Keyword(s):  
Comparative Analysis ◽  
Farming Systems ◽  
Farming System ◽  
Dairy Farming ◽  
Average Level ◽  
Chi Square ◽  
Livelihood Security ◽  
Cent Level ◽  
Extension Professionals ◽  
Level Of Significance

The survey was conducted during 2018-19 in Mandya district of Karnataka to analyse the livelihood security of the farmers practicing divergent farming systems. From Mandya district two taluks were considered i.e., K.R.Pete and Pandavapura. Major farming systems in each taluk were identified after thorough discussion with extension professionals of line departments and interaction with farmers and two predominant farming systems were selected from each taluk i.e., ‘paddy+dairy’ and ‘paddy+dairy+horticulture’ farming systems from K.R.Pete taluk and ‘sugrcane+dairy’ and ‘sugarcane+dairy+horticulture’ farming systems from Pandavapura taluk. For each farming system 30 respondents were selected, hence the total respondents selected was 120. A comprehensive scale was developed to measure livelihood security of the respondents adopting divergent farming systems. The study revealed that, under ‘paddy+dairy’ farming system, more than half (66.66 %) of the farmers fall under poor level of livelihood security. In ‘paddy+dairy+horticulture’ farming system more than two fifth (43.33 %) of the respondents fall under average extent of livelihood security. In case of ‘sugarcane+dairy’ farming system, 40.00 %) of the respondents fall under to poor extent of livelihood security. In case of ‘sugarcane+dairy+horticulture’ farming system, more than half (53.33 %) of the farmers belonged to average level of livelihood security. Furthermore, the results also showed that, there is a symbolic difference between livelihood security of farmers practicing ‘paddy+dairy’ and ‘paddy+dairy+horticulture’ farming systems at 1 per cent level of consequence. The U (6.00) value indicated that, there is a symbolic difference between livelihood security of farmers practicing ‘sugarcane+dairy’ and ‘sugarcane+dairy+horticulture’ at 1 per cent level of significance. The Chi-square value (24.40) indicates there is a symbolic difference between livelihood security of the farmers practicing ‘paddy + dairy’, ‘pa

scholarly journals Efficacy of Legumes Conservation by the Introduction of Lactobacillus RS4 from Epiphytic Microflora of Clover

2014 ◽  
Vol 2 (2) ◽  
pp. 120
Author(s):  
Ravilya A. Shurhno ◽  
Alexey I. Kolpakov ◽  
Fafziya S. Gibadullina ◽  
Olga N. Ilinskaya
Keyword(s):  
Amino Acids ◽  
Lactic Acid ◽  
Comparative Analysis ◽  
Nutritional Value ◽  
Plant Biomass ◽  
Practical Application ◽  
Characteristic Parameters ◽  
Forage Crops ◽  
Native Strain ◽  
Biological Preservative

Biological preservative on the basis of native strain of lactic acid bacterium Lactobacillus RS4, isolated from epiphytic microflora of clover, is recommended for practical application by preparation of forages from the high-protein dried crops. The comparative analysis of chemical composition, organic acids, amino acids and nutritional value of the main forage crops, and also characteristic parameters of three options of silages of clover revealed that the introduction of lactobacilli in plant biomass is economically effective. 

Auditory perception of 6- and 7-year-old children from Poland and Czech Republic – comparative analysis

2021 ◽  
Vol 601 (7) ◽  
pp. 41-50
Author(s):  
Irena Burczyk
Keyword(s):  
Czech Republic ◽  
Comparative Analysis ◽  
Auditory Perception ◽  
Average Level ◽  
Age Group ◽  
Place Of Residence ◽  
Level Of Difficulty ◽  
Different Levels ◽  
Rhythmic Structures

The article presents the results of an auditory perception study carried out with the use of Mira Stambak’s Reproduction of Rhythmic Structures, aimed at assessing the development of auditory perception. The study consisted in reproducing rhythmic structures with different levels of difficulty. The aim of the study was to assess the level of auditory perception in 6- and 7-year-old children from Poland and Czech Republic. For the purposes of the analysis, the respondents were divided into four groups, taking into account their age and place of residence. The article presents the results of the analysis of the assessment of the general correctness of the performance of tasks in each group due to the varying level of difficulty. As a result of the conducted research, it was found that the age and place of residence of the examined children determine the correctness of the performance of tasks of varying levels of difficulty assessing the level of auditory perception. The results regarding the correctness of simple tasks were not varied depending on the respondents’ age group and place of residence. In the case of tasks with an average level of difficulty, the results were comparable in both examined age and territorial differentiated groups. As regards the performance of the most difficult tasks, there were statistically significant differences between the compared groups with the highest results among 6- and 7-year-olds from Poland. Also, with regard to the total number of correctly performed tasks, there were statistically significant differences between the compared groups.

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