scholarly journals CHANGES JUSTIFICATION IN A CALCULATING METHOD OF LOAD STABILITY OF AUTOMOTIVE HOISTING CRANES AND AUTOMOTIVE MANIPULATOR CRANES BASED ON THE NORMATIVE DOCUMENTS ANALYSIS

2020 ◽  
Vol 17 (3) ◽  
pp. 328-339
Author(s):  
K. G. Pugin
Keyword(s):  
Research Work ◽  
Stability Ratio ◽  
Normative Documents ◽  
Calculating Method ◽  
Main Requirement ◽  
Strict Compliance ◽  
Technical Features ◽  
Design And Manufacture ◽  
Load Stability ◽  
Lifting Equipment

Introduction. The main requirement for lifting equipment is a strict compliance with safe operation measures. Therefore, special attention is focused on this issue when designing each unit of the equipment. However, despite the extensive list of the current normative documents and systematic monitoring, according to the annual official reports of the Federal service for environmental, technological and nuclear supervision over recent years the facilities that use lifting structures have high indicators for the number of accidents. In addition, the study of a load stability ratio determining in the design of automotive hoisting cranes and automotive manipulator cranes is particularly relevant at the present time due to a wide development of new lifting equipment as the development of the market for cranes has resulted in the occurrence of new technical issues in design and manufacture this type of lifting equipment. As part of the research work to improve the accuracy of calculating the load stability of automotive hoisting cranes and automotive manipulator cranes based on the analysis of existing normative and technical documents the possible occurrence of the accidents causes due to imperfection of regulatory instructions or non-compliance with regulatory instructions during design manufacturer work was considered.Materials and methods. This article is devoted to the study the fundamental principles of the nominative documents regulating the design and operation of the automotive hoisting cranes and automotive manipulator cranes. Both of the current and archived nominative documents in the field of lifting equipment are considered. Special attention is paid to the issues of determining the load stability of the automotive hoisting cranes and automotive manipulator cranes.Discussion and conclusion. The key differences in the calculating method of the load stability of the automotive hoisting cranes and automotive manipulator cranes are highlighted. The accidents statistics of load-lifting mechanisms and lifting structures of the Federal service for environmental, technological and nuclear supervision are given. The main causes of lifting equipment accidents are highlighted. The ways of solving the modernization of the existing methodology for determining the load stability of automotive hoisting cranes are proposed by including previously unrecorded factors related to the technical features of the chassis which contributes to improving the accuracy of the obtained values of the load stability ratio.

A Classification Scheme of ECM Spares Based on FAHP

2013 ◽  
Vol 411-414 ◽  
pp. 1762-1766
Author(s):  
Zhong Min Zhang ◽  
Jun Shan Li ◽  
Ping Song ◽  
Qi Fei Yan
Keyword(s):  
Classification Scheme ◽  
Comprehensive Evaluation ◽  
Research Work ◽  
Fuzzy Comprehensive Evaluation ◽  
Weight Vector ◽  
Triangular Fuzzy Number ◽  
Fuzzy Classification ◽  
Analytic Hierarchy ◽  
The Hierarchical Structure ◽  
Technical Features

According to the technical features and maintenance support of Electronic Counter Measures (ECM) equipment, this paper proposes a classification scheme for heterogeneous spares based on fuzzy analytic hierarchy process (FAHP). Firstly, the hierarchical structure of the multi-criteria was established by analyzing the criteria impacting item classification; and then the weight vector of each criterion was calculated using FAHP; furthermore, fuzzy comprehensive evaluation was made to construct the fuzzy classification decision model with a sorting method based on the weight vector of triangular fuzzy number using possibility degree. The research work can provide theoretical basis and data support for decision-making of the equipment support sectors.

scholarly journals Digitalization as a trend in library development

2021 ◽  
pp. 31-37
Author(s):  
I. P. Tikunova
Keyword(s):  
Radio Frequency Identification ◽  
Information Technologies ◽  
Public Libraries ◽  
Scientific Information ◽  
Research Work ◽  
Digital Technologies ◽  
Practical Significance ◽  
Normative Documents ◽  
Russian State ◽  
State Library

The purpose of this article is to introduce into the scientific circulation the results of the research work started in 2019 by the Russian State Library (RSL) with the aim to identify, analyze and characterize processes of digitalization of public libraries of the Russian Federation as well as to make the forecast of their further development. In the course of the research, there was done the analysis of normative documents, publications in the professional press and on the sites of Russian and foreign journals, other net actors, accumulating and testing scientific information about digitalization of librarianship; examination of libraries’ sites as points of access to distant library services.The summarization of the significant empirical base made it possible to identify and characterize the main trends in the process of digitalization of public libraries, as well as to conduct a comparative analysis of international and domestic experience in the introduction of digital technologies into library practice.During the first two stages of this scientific project, there was defined the concept of “library digitalization”, studied the content of the process of library digitalization, identified the main avenues and analyzed forms and areas of application of new information technologies in library practice.The results of the research have indicated that digitalization affects the development of all the main areas of library activities. The introduction of digital technologies leads to significant changes in the forms and methods of library work and library communications.There have been identified several main vectors of library digitalization development: digitization of library collections and creation of digital resources; development of the remote user services via the Internet, robotization of library processes and implementation of mobile communication technologies, augmented reality and radio frequency identification. The objectives of the introduction of digital technologies into library practice have been formulated as follows: liberation of library specialists from routine library work for to perform processes that require intellectual and creative abilities. The results of this research have important theoretical and practical significance.

Multiscale Nanoporous Structures for Sensing and Diagnostics

2009 ◽  
Vol 1236 ◽  
Author(s):  
Shalini Prasad
Keyword(s):  
Performance Metrics ◽  
Dynamic Range ◽  
Research Work ◽  
Serum Samples ◽  
Biomolecule Detection ◽  
Confined Spaces ◽  
And Performance ◽  
Hybrid Devices ◽  
Design And Manufacture ◽  
Analytical Tools

AbstractCurrent trends in sensing and diagnostics is towards developing hybrid devices that incorporate nanomaterial for enhancing device performance. These devices and systems have a broad impact ranging from personalized medicine in health care, environmental sensing and building multifunctional sensors for military applications. The overarching objective of the research work is to develop a new class of portable, bio-analytical tools with improved functionality and performance capabilities by utilizing the electrical effects on cellular and sub cellular species in micro and nanoscale domains.There are two key ideas underlying this research work. The first is to design and manufacture structures comprising of nanoscale-confined spaces integrated on to multi-scale architecture platforms. This model architecture has been engineered to harness the principle of macromolecular crowding for biomolecule binding and detection by monitoring perturbations in the electrical bi-layer in tailored nanoscale confined spaces. Enhanced performance metrics in biomolecule detection have been demonstrated in developing electrical immunoassays. We have demonstrated picogram/ml sensitivity in detection of specific cardiovascular disease biomarkers, cancer biomarkers from human serum samples with a dynamic range of response varying from pg/ml to g/ml and response time within 120 seconds.

The Research on Design and Manufacture of AC Resistor

2013 ◽  
Vol 365-366 ◽  
pp. 745-749
Author(s):  
Wen Li Chen ◽  
Xing Zhe Hou ◽  
San Qiang Wang ◽  
Dan Liu ◽  
Kai Xia Sun
Keyword(s):  
Material Science ◽  
Design Principles ◽  
Transmission System ◽  
Basic Unit ◽  
Electronic Technology ◽  
Electric Parameter ◽  
Design Effect ◽  
Technical Features ◽  
Design And Manufacture

Ohm is the basic unit of electric parameter. Its quantity transferable system is achieved by the ohm resistor. The quality of the ohm resistor is directly related to the accuracy and reliability of quantity transmission system. Ohm resistor can be divided into DC resistor and AC resistor to use. With the development of modern electronic technology, the AC resistor attracts more attention. The design and manufacture of AC resistor has always been difficult which involves cross-integration of the mechanics, electromagnetic and material science, the design effect of most products is not ideal. The technical features, design principles and factors in manufacturing are present in this paper for AC resistor manufacture and test units.

scholarly journals Research Progress of Microtransfer Printing Technology for Flexible Electronic Integrated Manufacturing

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1358
Author(s):  
Li Zhang ◽  
Chong Zhang ◽  
Zheng Tan ◽  
Jingrong Tang ◽  
Chi Yao ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Rapid Development ◽  
Research Work ◽  
Research Progress ◽  
Large Area ◽  
Printing Technology ◽  
Electronic Products ◽  
Integrated Manufacturing ◽  
Flexible Electronic ◽  
Technical Features

In recent years, with the rapid development of the flexible electronics industry, there is an urgent need for a large-area, multilayer, and high-production integrated manufacturing technology for scalable and flexible electronic products. To solve this technical demand, researchers have proposed and developed microtransfer printing technology, which picks up and prints inks in various material forms from the donor substrate to the target substrate, successfully realizing the integrated manufacturing of flexible electronic products. This review retrospects the representative research progress of microtransfer printing technology for the production of flexible electronic products and emphasizes the summary of seal materials, the basic principles of various transfer technology and fracture mechanics models, and the influence of different factors on the transfer effect. In the end, the unique functions, technical features, and related printing examples of each technology are concluded and compared, and the prospects of further research work on microtransfer printing technology is finally presented.

The Tensile Strength of Neat and Coated Woven Fabrics

2011 ◽  
Vol 480-481 ◽  
pp. 448-452 ◽  
Author(s):  
Ping Wang ◽  
Yan Zhang
Keyword(s):  
Tensile Strength ◽  
High Performance ◽  
Research Work ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
High Quality ◽  
Flexible Composites ◽  
Design And Manufacture

Flexible composites with high performance are widely used in geotextiles and some other fields. In this research work, the author studied the tensile behaviors of four neat woven fabrics and two coated woven fabrics. The comparison of the tensile strength between the uncoated and coated woven fabric revealed the effect of coating on the tensile strength of flexible composites which will be beneficial for the design and manufacture of flexible composite with high quality.

Mechanical and Magnetic Analysis of Giant Magnetostrictive Transducer

2011 ◽  
Vol 79 ◽  
pp. 166-171 ◽  
Author(s):  
Xiao Yu Wang ◽  
Jing Jing Wu ◽  
Zhen Yuan Jia ◽  
Xiao Dong Tan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Simulation Method ◽  
The Finite Element Method ◽  
Calculating Method ◽  
Magnetic Analysis ◽  
Transducer Design ◽  
Design And Manufacture ◽  
Magnetostrictive Transducer ◽  
Element Method

The giant magnetostrictive transducer is a prospective kind of transducer for precession position and actuator utilization. The transducer design need cooperated with the mechanics, electrics and magnetics knowledge. It designs the giant magnetostrictive transducer and employed the finite element method to simulate and analysis the transducer’s prestress mechanism and modal analysis, Meanwhile, It uses the Ansoft software simulated and calculated the electrical and magnetical performance of the designed transducer. It presents the calculating method of the actuator’s mechanical, magnetic and thermal system, and utilizes the finite element method to analysis the actuator’s prestress mechanism, modal mode, permanent and electromagnetic magnetic circuit. The simulation results verified the design is reasonable and effective. The discussion of the model, analysis and simulation method of the transducer can direct the future transducer design and manufacture.

Leak Integrity Evaluation of Stabbing Valves at the Gas-Compressor Station “Portovaya”

NDT World ◽  
2015 ◽  
Vol 18 (3) ◽  
pp. 34-37
Author(s):  
Морозов ◽  
Vyacheslav Morozov ◽  
Сухолитко ◽  
Andrey Sukholitko ◽  
Сорокин ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Research Work ◽  
Acoustic Signals ◽  
Compressor Station ◽  
Integrity Test ◽  
Emission Signal ◽  
Main Requirement ◽  
Acoustic Technique ◽  
Inner Parts ◽  
Different Levels

Leak integrity guaranteeing is the main requirement to shut-off valves. Possibilities to prolong an operation life as well as real activities on leaktightness restoration depend on leakage value at valve’s closing element. The leakage value can be efficiently and quantitatively evaluated by recording acoustic signals. The levels of acoustic signals are different at different testing conditions. In order to determine the correspondence between different levels of acoustic signals and different leakage values, it is necessary to carry out some experiments on real tested objects. Since 2011 “Lenorgenergogaz” together with “INTERYUNIS” have been devising a technique for leak integrity evaluation of shut-off valves at gas-compressor stations. A large amount of experiments on more than 130 units of shut-off valves installed both on ground and underground was carried out. The algorithm for leakage detection in case a typical “leakage” signal is received has been developed; empirical dependences for leakage evaluation on the basis of acoustic emission signal parameters have been obtained for main types of shut-off valves installed at “Gasprom Transgas St. Petersburg” objects. The article presents the results of research work on leak integrity evaluation of valves at “Portovaya” gas-compressor station. The stabbing valves DN800 mm installed at a segment of a reverse pipeline were the object of the research. Leak integrity test was carried out using both a manometric and an acoustic technique with quantitative leakage evaluation for every closing element. The results of each method have agreed with an error no more than 20%. Visual inspection of stabbing valves inner parts has shown that seat guide firming are damaged; this fact indirectly confirms the quantitative evaluation of shut-off valves leaktightness. Conclusions made on the basis of obtained results can serve as a foundation for acoustic emission leak integrity evaluation technique for shut-off valves.

scholarly journals Design of university pedagogy programs: integrating ideology and pedagogical science (1930-s) (to the 110th anniversary of the Minin Nizhny Novgorod State Pedagogical University)

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
T. G. Khanova
Keyword(s):  
Research Work ◽  
Basic Research ◽  
Educational Institutions ◽  
Role Of Government ◽  
Normative Documents ◽  
Political Events ◽  
State Pedagogical ◽  
Archival Documents ◽  
Science And Education ◽  
Pedagogical Science

Introduction. The article presents the results of the author's research work on the study of the factors that determined the development and approval of the content of the course of university pedagogy in the 1930s on the basis of the integration of state ideology and pedagogical science. The article makes an attempt to highlight general (on a national scale) and specific (using the example of the Nizhny Novgorod Pedagogical Institute, which celebrates the 110th anniversary of its foundation this year) features of the development of the content of pedagogical science in this period.Materials and Methods. The research was carried out on the basis of the analysis of normative documents, materials of pedagogical periodicals, generalizing works of scientists, archival documents of the Central Archives of the Nizhny Novgorod Region: articles, reports, resolutions, protocols, etc. Basic research methods: analysis of sources, comparative analysis of data.Results. Based on the study and analysis of data, trends in the development of the content of pedagogy as a science under the influence of government decrees, through the prism of socio-political events taking place in the 1930s, are shown. The dynamics of the development of the content of pedagogical science and education in the period under review is analyzed, the influence of state ideology on the development of pedagogical science in a national and regional format is characterized on the material of pedagogical educational institutions of Nizhny Novgorod, mainly the Nizhny Novgorod Pedagogical University. The role of government decrees in the field of pedagogical education in the practice of regional pedagogical universities and departments of pedagogy is shown. It can be stated with complete confidence that the 1930s in Soviet pedagogy passed under the sign of the development of program documents on university pedagogy.Discussion and Conclusions. The author considers the problems of the formation and development of pedagogy as a social and humanitarian science, shows the influence of politics and ideology on the development of pedagogical science and practice, substantiates the dependence of pedagogy on the order of society, the state, and the ruling party.

scholarly journals Consideration of risks in the evaluation of channel deformations for the design of culverts on forest roads.

2017 ◽  
Author(s):  
А.Н. Кондратьев
Keyword(s):  
Low Cost ◽  
Research Work ◽  
Bank Erosion ◽  
Channel Deformations ◽  
Forest Roads ◽  
Normative Documents ◽  
Hydrological Characteristics ◽  
Channel Erosion ◽  
The Cost ◽  
Cost Of Construction

Оценен учет рисков при проектировании водопропускных сооружений на лесных дорогах на примере расчета русловых размывов берегов на малых водотоках. В результате расчетов гидрологических характеристик в современных нормативных документах по изысканиям получаются конкретные значения. Например, размыв берега в створе проектирования трубного перехода принимается равным 10 м. Неточности и ошибки расчетов при этом не учитываются, хотя они могут привести к тому, что проектируемое сооружение может быть размыто или, наоборот, заилено. Фактически же в расчетах всегда скрыты ошибки разного рода. Следовательно, имеется интервал разброса результатов расчета, например 8–12 м. Специфика инженерно-гидрометеорологических изысканий при подготовке данных для проектирования объектов лесной инфраструктуры заключается в том, что здесь более интересна верхняя граница, т. е. следует принимать размыв 12 м. Рассмотрено, как разброс результатов подобных расчетов может отразиться на затратах. Для этого оценен переход от значений размыва берега за период проектной эксплуатации сооружения и вероятности (P, %) к затратам (Z, руб.), а затем к риску (R, руб.), под которым понимается произведение затрат на обеспеченность R = ZP. Рассмотрен вклад разных затратных частей, из которых основные – на строительство и ликвидацию аварии. Выяснилось, что при разных соотношениях стоимости строительства и ликвидации аварии оптимальными будут разные стратегии: при малой стоимости выгодно уменьшать стоимость строительства, при большой стоимости ликвидации аварии лучше выбирать более безопасные варианты, даже при увеличении стоимости строительства. Estimated risks in the design of culverts on forest roads by the example of the calculation of channel erosion on the banks of small watercourses. The result of the calculation of hydrological characteristics in the modern normative documents on research work specific values. For example, erosion of the coast in alignment with the projecting pipe is 10 m. Inaccuracies and errors of calculation are not taken into account, although they can lead to the fact that the designed structure may be blurred, or vice versa, silted. In fact, the calculations are hidden all kinds of errors. Therefore, an interval of variation of the calculation result, for example, 8–12 m. Specificity of engineering-hydrometeorological survey in the preparation of data for the design of forest infrastructure is that in this case, a more interesting upper bound, that is, we should accept the erosion of 12 m. the article considers, as variation results of such calculations can affect the cost. For the evaluated transition from the values of Bank erosion during the period of project operation facilities and security (P, %), cost (Z, rub.), then risk (R, rub.), which is defined as the product of the cost of the security R = ZP. Contribution of different cost parts, which is main – 1) construction and 2) liquidation of the accident. It turned out that at different ratios of the cost of construction and the elimination of the accident will be optimized with different strategies: in low-cost liquidation of the accident is advantageous to reduce the cost of construction, with the high cost of liquidation of the accident it is better to choose more secure options, even if you increase the cost of construction.

Sign in / Sign up

Export Citation Format

Share Document