The Qualitative Assessment of Gas-Thermal Coating’s Cohesive Strength Estimation Methods

2020 ◽  
Vol 299 ◽  
pp. 949-954
Author(s):  
V.I. Kretinin ◽  
Victoria Alexandrovna Sokolova ◽  
S.A. Voinash
Keyword(s):  
Cross Section ◽  
Adhesion Strength ◽  
Adhesive Strength ◽  
Qualitative Assessment ◽  
Estimation Methods ◽  
Theoretical Computation ◽  
Theoretical Justification ◽  
Advantages And Disadvantages ◽  
Strength Tests

In this article the various methods of assessment of gas-thermal coating’s adhesion strength are considered. The methodology of carrying out the strength tests, using traditional methods of quantitative assessment of adhesive strength of a coating towards its basement, is reflected; the advantages and disadvantages of the represented methods are given. In the article, the theoretical justification of the mechanics of adhesive avulsion is given, and the imperfection of conic pins’ usage is shown. Aiming at increasing of the accuracy and quality of the strength tests of gas-thermal coatings, a modernised methodology, as well as the samples (а.с.1436025), related to detection of the adhesion strength, are suggested. The theoretical computation of the reasonableness of usage of ring cross section of the coating, resulted in the event of usage of the offered sample, is given. On the basis of theoretical computation, a defining formula of the adhesive strength is conducted. Comparison tests of adhesion strength with various sample’s designs are completed. The reasonableness and effectiveness of usage of the offered methodology in assessment of gas-thermal coating’s adhesion strength are proven.

scholarly journals Influence of the quality of compounds on the adhesion properties of metal cord.

2020 ◽  
pp. 36-41
Author(s):  
O. N. Khrol
Keyword(s):  
Adhesion Strength ◽  
Adhesive Strength ◽  
Adhesion Properties ◽  
Metal Cord ◽  
Comparative Tests ◽  
Vulcanized Rubber ◽  
Strength Tests

The adhesive strength of the metal cord, i. e. the strength of its adhesion to the compound, is one of the most important indicators of the quality of the metal cord. Increasing the amount of adhesive strength allow to improve the performance of finished tires.Determination of the adhesive strength value can be performed by different methods. All methods are based on extracting (pulling) metal cord from a block of vulcanized rubber and fixing the required load. Each method has its own characteristics that affect the amount of adhesive strength. Therefore, when conducting comparative tests, it is necessary to use one of the selected methods.The study of factors that affect the amount of adhesive strength is necessary to identify the causes that lead to its change.The article analyzes how the quality of the used compound affects the adhesive strength. Tests with the use of compounds with various defects were considered and carried out; probable factors leading to deviations in the adhesion strength indicators were determined.

scholarly journals Enhancing quality of education in the university system: A study of Nigerian education system

2020 ◽  
Vol 10 (2) ◽  
pp. 55-61
Author(s):  
Adekunle Thomas Olutola ◽  
Rafiu Ademola Olatoye
Keyword(s):  
Education System ◽  
Current Trend ◽  
Monitoring And Evaluation ◽  
University Education ◽  
Qualitative Assessment ◽  
Quality Of Education ◽  
University System ◽  
Advantages And Disadvantages ◽  
The University

How to enhance and maintain quality of education in Nigerian University education system has become one of the central issues in educational assessment and evaluation. It is important to note that no nation can rise above the standard of her education. The quality of education in Nigeria is presently rated as low. Many scholars have observed that many graduates are unemployable because they lack relevant and required skills. Therefore, this paper examines the present educational quality in Nigeria, reasons for the current trend, assessment issues, advantages and disadvantages of computer-based tests in the university system, recruitment of staff without thorough assessment and politics of accreditation in Nigeria. It was concluded that the quality of education in the University system can be enhanced and maintained through qualitative assessment. Also, there is the need to review the process of recruitment of staff, accreditation procedures, monitoring and evaluation of standard as well as students’ assessment practices.

scholarly journals MATRIX RECOVERY METHODOLOGY BASED ON MOBILE DATA

2021 ◽  
Vol 2021 (1) ◽  
pp. 117-120
Author(s):  
Ol'ga Lebedeva
Keyword(s):  
Mobile Network ◽  
Gravity Models ◽  
Mobile Technologies ◽  
Estimation Methods ◽  
Reliable Estimate ◽  
Matrix Estimation ◽  
Advantages And Disadvantages ◽  
Consistent Assessment ◽  
Larger Sample

The study is aimed at comparing the methods of restoring the correspondence matrices and a more detailed study of the algorithm for restoring the correspondence matrix based on innovative mobile technologies. Previously, the correspondence matrices were reconstructed by interviewing vehicle drivers and applying gravity models, then matrix estimation methods are used to calculate traffic flows. Each of these approaches has a number of advantages and disadvantages, but there is no evidence to assess the quality of the data obtained. The results show that, in general, processing da-ta from the mobile network allows for a more reliable estimate without taking into account survey data or similar observations, and using this type of research can lead to a more consistent assessment of trips with a larger sample size

scholarly journals COMPARATIVE ANALYSIS OF EXISTING METHODS FOR DEVELOPING CORRESPONDENCE MATRICES

2021 ◽  
Vol 1 (1) ◽  
pp. 181-182
Author(s):  
Ol'ga Lebedeva
Keyword(s):  
Comparative Analysis ◽  
Gravity Models ◽  
Mobile Technologies ◽  
Estimation Methods ◽  
Traffic Flows ◽  
Matrix Estimation ◽  
Advantages And Disadvantages

The study is aimed at comparing the methods of restoring correspondence matri ces, the traditional transport school and modern mobile technologies. Traditionally, correspondence matrices are restored by interviewing vehicle drivers and applying gravity models (to extrapolate and fill in unobserved movements), then matrix estimation methods are used to calculate traffic flows. Each of these approaches has a number of advantages and disadvantages, but there is no evidence to assess the quality of the data obtained.

Can trust become a factor of economic growth? Dynamic changes in the level of trust of Russian youth

2020 ◽  
pp. 92-107 ◽  
Author(s):  
A. I. Bakhtigaraeva ◽  
A. A. Stavinskaya
Keyword(s):  
Institutional Environment ◽  
Negative Effects ◽  
Dynamic Changes ◽  
Generalized Trust ◽  
Level Of Education ◽  
Advantages And Disadvantages ◽  
The Future ◽  
Analysis Of Dynamics

The article considers the role of trust in the economy, the mechanisms of its accumulation and the possibility of using it as one of the growth factors in the future. The advantages and disadvantages of measuring the level of generalized trust using two alternative questions — about trusting people in general and trusting strangers — are analyzed. The results of the analysis of dynamics of the level of generalized trust among Russian youth, obtained within the study of the Institute for National Projects in 10 regions of Russia, are presented. It is shown that there are no significant changes in trust in people in general during the study at university. At the same time, the level of trust in strangers falls, which can negatively affect the level of trust in the country as a whole, and as a result have negative effects on the development of the economy in the future. Possible causes of the observed trends and the role of universities are discussed. Also the question about the connection between the level of education and generalized trust in countries with different quality of the institutional environment is raised.

Femtocell Selection Scheme for Reducing Unnecessary Handover and Enhancing Downlink QoS in Cognitive Femtocell Networks

2017 ◽  
Author(s):  
Hoang Nhu Dong ◽  
Hoang Nam Nguyen ◽  
Hoang Trong Minh ◽  
Takahiko Saba
Keyword(s):  
Cellular Networks ◽  
Estimation Methods ◽  
Mobility Prediction ◽  
Capacity Estimation ◽  
Femtocell Networks ◽  
Selection Scheme ◽  
Indoor Communications ◽  
Performance Results ◽  
Cognitive Femtocell

Femtocell networks have been proposed for indoor communications as the extension of cellular networks for enhancing coverage performance. Because femtocells have small coverage radius, typically from 15 to 30 meters, a femtocell user (FU) walking at low speed can still make several femtocell-to-femtocell handovers during its connection. When performing a femtocell-to-femtocell handover, femtocell selection used to select the target handover femtocell has to be able not only to reduce unnecessary handovers and but also to support FU’s quality of service (QoS). In the paper, we propose a femtocell selection scheme for femtocell-tofemtocell handover, named Mobility Prediction and Capacity Estimation based scheme (MPCE-based scheme), which has the advantages of the mobility prediction and femtocell’s available capacity estimation methods. Performance results obtained by computer simulation show that the proposed MPCE-based scheme can reduce unnecessary femtocell-tofemtocell handovers, maintain low data delay and improve the throughput of femtocell users. DOI: 10.32913/rd-ict.vol3.no14.536

Data Integrity Techniques in Cloud Computing: An Analysis

2017 ◽  
Vol 7 (8) ◽  
pp. 121 ◽  
Author(s):  
Neha Thakur ◽  
Aman Kumar Sharma
Keyword(s):  
Cloud Computing ◽  
Cloud Storage ◽  
Data Integrity ◽  
Advantages And Disadvantages ◽  
Security Models ◽  
Cloud Storage Service ◽  
Storage Service ◽  
Cloud Users ◽  
It Enterprises

Cloud computing has been envisioned as the definite and concerning solution to the rising storage costs of IT Enterprises. There are many cloud computing initiatives from IT giants such as Google, Amazon, Microsoft, IBM. Integrity monitoring is essential in cloud storage for the same reasons that data integrity is critical for any data centre. Data integrity is defined as the accuracy and consistency of stored data, in absence of any alteration to the data between two updates of a file or record.  In order to ensure the integrity and availability of data in Cloud and enforce the quality of cloud storage service, efficient methods that enable on-demand data correctness verification on behalf of cloud users have to be designed. To overcome data integrity problem, many techniques are proposed under different systems and security models. This paper will focus on some of the integrity proving techniques in detail along with their advantages and disadvantages.

Problems of Distance Education

2018 ◽  
Vol 7 (1) ◽  
pp. 14-23 ◽  
Author(s):  
Rostislav Fojtík
Keyword(s):  
Distance Education ◽  
Distance Learning ◽  
Computer Science ◽  
Full Time ◽  
Advantages And Disadvantages ◽  
E Learning ◽  
Educational Requirements

Abstract Distance learning and e-learning have significantly developed in recent years. It is also due to changing educational requirements, especially for adults. The article aims to show the advantages and disadvantages of distance learning. Examples of the 20-year use of the distance learning form of computer science describe the difficulties associated with the implementation and implementation of this form of teaching. The results of students in the full-time and distance form of teaching in the bachelor’s study of computer science are compared. Long-term findings show that distant students have significantly lower scores in the first years of study than full-time bachelor students. In the following years of study, the differences diminish, and students’ results are comparable. The article describes the possibilities of improving the quality of distance learning.

Qualitative assessment of equipment failure cause finding and removal

2018 ◽  
pp. 116-126
Author(s):  
E. A. Vakulin ◽  
A. I. Zayats ◽  
V. A. Beklemeshev ◽  
V. A. Ivashkevich ◽  
V. A. Khazhiev ◽  
...  
Keyword(s):  
Production Condition ◽  
Real Life ◽  
Open Pit Mine ◽  
Qualitative Assessment ◽  
Open Pit ◽  
Quality Level ◽  
Equipment Failure ◽  
Operation Conditions ◽  
Failure Investigation

Investigation of failures is one of the critical activities of mining and haulage equipment operability assurance in mining. Maintaining failure investigation at the required quality level, it is possible to identify provisions, rules and procedures that should be revised or changed, operation conditions that should be improved, additional personnel training, if required, etc. Investigation of failures in mines is under responsibility of machine men and electricians of maintenance and operation services. In reality, factory management and setup for production condition weak concernment of these workers in quality investigation aimed at finding of sources of equipment failures. This article describes real-life results achieved in development and use of maintenance service operation, technology and management monitoring. The requirements are substantiated for quality improvement in failure cause finding and removal in mining and haulage equipment at Chernogorsky open pit mine, SUEK-Khakassia. Causes of the present quality of failure investigation by machine men of Chernogorsky Repair and Engineering Works and Chernogorsky open pit mine are revealed. The proposed recommended practices will improve quality of mining and haulage equipment failure investigation.

Alban Berg

2017 ◽  
Author(s):  
Helen Abbott
Keyword(s):  
Adhesion Strength ◽  
String Quartet ◽  
Large Scale ◽  
Statistical Data ◽  
Alban Berg ◽  
German Translation ◽  
Stefan George ◽  
Strength Tests ◽  
Parallel Texts

When Austrian composer Alban Berg was working on his opera Lulu, he wrote three Baudelaire songs as a Konzertaria entitled Der Wein. Premiered in 1930, Der Wein is a large-scale work for voice and orchestra. Berg uses a German translation by Stefan George, but the published score is in parallel texts, accommodating the French verse line. The chapter also considers a ‘hidden’ Baudelaire setting from Berg’s 1926 Lyric Suite for string quartet. The analysis covers: (a) the context of composition; (b) the connections established between selected poems; (c) the statistical data generated from the adhesion strength tests; and (d) how the data shape an evaluation of Berg’s settings of Baudelaire. Evidence suggests that Berg’s settings of Baudelaire are loosely entangled; the highly prescriptive score affects syntax, semantics, and prosody. Yet, because Der Wein has stood the test of time, the settings are deemed loosely accretive.

Sign in / Sign up

Export Citation Format

Share Document