Готові списки джерел за темами / Technological precision

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Добірка наукової літератури з теми "Technological precision"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Technological precision"

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Jarolímek, J., M. Stočes, J. Masner, J. Vaněk, P. Šimek, J. Pavlík, and J. Rajtr. "User-Technological Index of Precision Agriculture." Agris on-line Papers in Economics and Informatics 09, no. 01 (March 30, 2017): 69–75. http://dx.doi.org/10.7160/aol.2017.090106.

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Medar, A. V. "Technological Quality Assurance of Assembling." Izvestiya MGTU MAMI 2, no. 2 (January 20, 2008): 295–302. http://dx.doi.org/10.17816/2074-0530-69854.

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Анотація:
The paper offers the concept of system examination of product-technology-equipment precision interaction. This concept is intended to develop a general methodology of technological object creation. It includes the sections of precision analysis of output accuracy parameter configuration for assembly and technological process and assembly equipment synthesis.
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Maggi, Elaine, Nicole E. Patterson, and Cristina Montagna. "Technological advances in precision medicine and drug development." Expert Review of Precision Medicine and Drug Development 1, no. 3 (May 3, 2016): 331–43. http://dx.doi.org/10.1080/23808993.2016.1176527.

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Dean, T. A. "Precision forging." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 214, no. 1 (January 1, 2000): 113–26. http://dx.doi.org/10.1243/0954406001522859.

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Анотація:
The manufacture of forgings to precise dimensional form and with specified mechanical and metallurgical properties has been the aim of industry since the industrial revolution. Developments towards this objective have been continual over the years as companies have sought commercial advantage in markets where competition from other industries such as foundry, powder metallurgy, sheet metal and fabrication is increasingly fierce. This paper starts with a brief review of historical milestones in the development of forging up to the first half of the twentieth century. The last 50 years have been a period of great activity in the establishment of a science base for forging technology and the development of cold, warm and hot processes with associated equipment to enable industry to provide components of greater complexity, increasing accuracy and nearer to net shape and research in the present author's laboratory has contributed to the advances in many areas. The major thrusts have dealt largely with improved tool designs and coatings for greater accuracy and longevity, techniques to enable metal to flow into die cavities of complex geometries and methods for complete process control, from raw material to product despatch. This paper attempts to highlight significant aspects of the technological developments which have been the result of world-wide activities. To give a coherent picture the steps of knowledge acquisition which have supported technological advancement are described using mainly the results of work from the present author's laboratory.
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Evans, Chris J. "Precision engineering: an evolutionary perspective." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1973 (August 28, 2012): 3835–51. http://dx.doi.org/10.1098/rsta.2011.0050.

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Анотація:
Precision engineering is a relatively new name for a technology with roots going back over a thousand years; those roots span astronomy, metrology, fundamental standards, manufacturing and money-making (literally). Throughout that history, precision engineers have created links across disparate disciplines to generate innovative responses to society's needs and wants. This review combines historical and technological perspectives to illuminate precision engineering's current character and directions. It first provides us a working definition of precision engineering and then reviews the subject's roots. Examples will be given showing the contributions of the technology to society, while simultaneously showing the creative tension between the technological convergence that spurs new directions and the vertical disintegration that optimizes manufacturing economics.
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Kornilovich, S. A., and B. S. Trofimov. "PRECISION, STABILITY ANALYSIS OF THE CRANKSHAFT GRINDING TECHNOLOGICAL PROCESS." Russian Automobile and Highway Industry Journal 15, no. 6 (January 11, 2019): 878–85. http://dx.doi.org/10.26518/2071-7296-2018-6-878-885.

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Анотація:
Introduction. The article is devoted to the problem of the crankshafts quality of automotive tractor engines on the example of YaMZ - 238NB engines. Despite years of experience in the repair industry to implement the technological process of the crankshafts grinding during their restoration, the quality of its implementation is not sufficient. Therefore, for reducing errors in restoring crankshafts, as well as in any other parts, it is possible only if the reasons for their occurrence are promptly identified. The purpose of the research is to identify the reasons of the errors in the process of grinding crankshafts for repair dimensions according to the results of technical control and observation of the technological process.Materials and methods. The methodological basis for experimental and theoretical research is a system analysis. The structural and functional representation of the object is also used for research, and the model for the analysis of the grinding process serves as the basis for the decomposition.Results. While analyzing the measurements results of the rod necks connection and polishing for repair dimensions, the transformed experimental-statistical method is applied. The peculiarity of the method consists in the algebraic transformation of the calculation algorithm, which is reduced to simple formulas for semi-finished products and which makes it easy to program calculations on the computer. In addition, the order of processing the number of obtained numerical values and construction of distribution curves is stated for estimating the correspondence between the probability of the experimental distribution and the theoretical distribution.Discussion and conclusions. The implementation of the algorithm for calculating the accuracy and stability for the technological process of grinding the crankshafts during their restoration would reduce the error value. Moreover, the reduction of errors during the process of crankshafts restoration would improve the quality of repair, thus prolonging the crankshaft serviceability.
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Komarov, V. A., A. V. Grigoryev, and A. P. Martyshkin. "Target functions of parameters optimization of technological equipment precision." Traktory i sel hozmashiny 80, no. 7 (July 15, 2013): 44–47. http://dx.doi.org/10.17816/0321-4443-65782.

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Liu, Zeng Wen, and Chuan Zhen Huang. "A Technological Study on Granite Grinding." Key Engineering Materials 416 (September 2009): 316–20. http://dx.doi.org/10.4028/www.scientific.net/kem.416.316.

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Анотація:
It is desirable that the precision of the shape and the dimension of stone products in top grade decoration is getting higher. Grinding is one of the main technology in machining stone which ensures the precision of the shape and the dimension of stone products, and influences the machining efficiency. This investigation aims to experimentally find out the reasons causing grinding wheel wear and the factors influencing smoothness. It is found that the wear of grinding wheel is mainly caused by the hardness and removal quantity of stone. The harder the stone, the shorter the life of grinding wheel. The greater the removal quantity of stone, the bigger the wear of grinding wheel. The surface smoothness of stone is mainly related to the size of abrasives and the spindle speed. The smaller the abrasives and the higher the speed, the higher the smoothness.
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Gong, Ya Dong, Jian Yu Yang, Yan Cheng Zhang, and Wan Shan Wang. "Research on Small Dimension Precision Turning Technology for Internal Spherical Surface." Advanced Materials Research 53-54 (July 2008): 381–86. http://dx.doi.org/10.4028/www.scientific.net/amr.53-54.381.

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Анотація:
To the processing requirements of high precision small dimension and high surface quality for internal spherical surface with through hole processing, a new technological method of precision turning was proposed in this paper, the processing equipment and control system were designed and developed, the parameters of precision turning technology were given. Through precision turning experiment’s verification, this technological method of precision turning can satisfy processing requirement, and has features of simple, high efficiency, and low processing cost. Some comparative research in various small dimension precision turning technology for internal spherical surface were also made in this paper, and conclusions full of research and processing reference value were drawn.
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Trivelli, Leonello, Andrea Apicella, Filippo Chiarello, Roberto Rana, Gualtiero Fantoni, and Angela Tarabella. "From precision agriculture to Industry 4.0." British Food Journal 121, no. 8 (August 5, 2019): 1730–43. http://dx.doi.org/10.1108/bfj-11-2018-0747.

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Анотація:
Purpose Circumstances that are have a significant impact on it. In particular, environmental sustainability related to the increase of worldwide population, and market demand for agricultural products (with consumers more and more aware about cultivation and breeding techniques and interested in healthy and high-quality products) represent two of the key challenges that the agricultural sector is going to face in next years. In such a landscape, technological innovations that can support organizations and entrepreneurs to face these problems become increasingly important, and Industry 4.0 is the most striking example. Indeed, the Industry 4.0 paradigm aims to integrate digital technologies into business processes to raise productivity levels and to develop new business models. Accordingly, digital technologies play a similar role in the precision agriculture domain, and the purpose of this paper is to understand if the technologies at the basis of these two paradigms are the same or not. Design/methodology/approach The present work investigates how the two domains of Industry 4.0 and precision agriculture are connected to one another by analyzing the most used technologies in both the fields in order to highlight common patterns and technological overlaps. To reach such goal, an approach combining manual and automated analysis was developed. Findings The research work generated three main results: a dictionary of precision agriculture technologies including 324 terms; a graph, describing the connections between the technologies composing the dictionary; and a representation of the main technological clusters identified. Originality/value These show how the two domains under analysis are directly connected and describe the most important technologies to leverage when approaching digital transformation processes in the agricultural sector.
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Більше джерел

Дисертації з теми "Technological precision"

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Pyiypchuk, Mariya, Lldiia Dziuba, Ihor Rebezniuk, Oksana Chmyr, and Mykhailo Burdiak. "Modeling Parametric Failures of Woodworking Machines According to the Technological Precision Criterion." Thesis, Inter Grabchenko's International Conference t y *-* t y -t on Advanced Manufacturing Processes “ " “ http://interpartner.odessa.ua Partner, 2021. https://sci.ldubgd.edu.ua/jspui/handle/123456789/9943.

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Rahman, Baishali. "Estimating the Economic Benefits of Automatic Section Control in the North Dakota Prairie Pothole Region." Thesis, North Dakota State University, 2018. https://hdl.handle.net/10365/28870.

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The impact of Automatic Section Control (ASC) as a tool of Precision Agricultural Technology as considered in the more efficient application of inputs to produce the four major crops, corn, soybean, HRSW, and canola in the North Dakota Prairie Pothole Region. Reduction in machinery overlap in the sample 105 fields was calculated by simulating the routing paths of a 60-feet wide planter with 24 sections controlled and a 120-feet wide boom sprayer with individual nozzle control. The dollar and percentage seed and chemical costs that a farm can save by reducing overlapping area were calculated. Impact of field parameters on net savings were estimated by developing and estimating an econometric model. Results show that ASC can save substantial cost in the sample fields while field shape had the highest significant impact on net cost savings.
North Dakota State University. Department of Agribusiness and Applied Economics
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Sato, Sergio Akira. "Um modelo para aumento de produtividade no setor sucroalcooleiro baseado em gestão do conhecimento." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264832.

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Анотація:
Orientador: Carlos Kenichi Suzuki
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
Made available in DSpace on 2018-08-20T11:45:24Z (GMT). No. of bitstreams: 1 Sato_SergioAkira_M.pdf: 3388849 bytes, checksum: f5d9b2d80a5cef7ee5e040fb289c0ae5 (MD5) Previous issue date: 2012
Resumo: O objetivo deste trabalho tem como propósito principal o de analisar o modelo de gestão atual do setor sucroalcooleiro do bioetanol e desenvolver um modelo prático de gestão do conhecimento com foco na troca de informações entre as áreas da agricultura, e usina de álcool na geração de bioenergia que utilizam como base uma matéria-prima com alto índice de sustentabilidade econômica e que oferece o menor impacto ambiental, a cana-de-açúcar. Foi desenvolvido um Modelo com foco em gestão de conhecimento alimentado por dados coletados com tecnologia embarcada para agricultura de precisão com indicadores de desempenho das etapas do manejo da cana-de-açúcar incluindo dados de conhecimento tácito nos sistemas de informações, bancos de dados e mapas do conhecimento oferecendo uma visibilidade global dos processos em um modelo prático com front-end em software que facilitou a integração total e a comunicação rápida entre as áreas da agricultura e usina. O processo de inovação tecnológica para agricultura de precisão foi promovido através da gestão do conhecimento e da troca de informações entre as áreas da agricultura no manejo da cana-de-açúcar e a aferição da ATR na usina para a produção de bioetanol favorecendo o feedback de informações dos eventos em cada processo durante todo o ciclo do processo desta produção. O resultado obtido com os dados inferindo em mapas do conhecimento foi um aumento expressivo de informações operacionais das áreas e uma maior visibilidade com um aumento ao fomento no processo de inovação tecnológica em uma busca pela melhoria contínua favorecida pela integração das áreas do setor sucroalcooleiro baseada em uma plataforma tecnológica como a Web com utilização de Intranets, Virtual Private Networks (VPN) ou Extranets para a comunicação entre as áreas de forma instantânea, melhorando a previsão do aumento de produtividade e expectativas econômicas da produção anual
Abstract: The main goal of the present work was to analyze the current management model of the sugar-alcohol sector for bioethanol production and to develop a practical model of knowledge management with focus on the information exchange among agriculture, ethanol plant in the generation of bioenergy which use a self-sustaining raw-material that offers the high index of economic sustainability and lowest environmental impact, the sugarcane. A Model was developed with focus on a knowledge management fed by collected data from embedded technology for the precision agriculture with performance indicators on the stages of sugarcane management including data from tacit information included on information systems, databases, and knowledge maps offering a global process and visibility in a practical model with a front-end software that facilitated the seamless integration and fast communication between agriculture and ethanol plant areas. The process of technology innovation to precision agriculture has been promoted through the knowledge management and information exchange between the areas of sugarcane agriculture and the measurement of ATR at the bioethanol plant for the production of bioethanol favoring the feedback of information events in each process during the entire process of production. The obtained result with the inferred data in knowledge maps was an expressive increase of the operational information of areas and a larger visibility, offering an increase in the technology innovation with a search for a continuous improvement favored by the integration of the areas of the sugar-alcohol sector based on a technological platform as the Web Browser using Intranets, Virtual Private Networks (VPN) or Extranets between areas, instantly improving the prediction of productivity increase and economic expectation of annual production
Mestrado
Materiais e Processos de Fabricação
Mestre em Engenharia Mecânica
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Kazimierskis, Audrius. "UAB "Dotnuvos projektai" inovacijų valdymas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140616_130442-70751.

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Анотація:
Tyrimo objektas – UAB ,,Dotnuvos projektai‘‘ technologinių inovacijų diegimas klientų ūkiuose. Tyrimo tikslas – nustačius problemas su kuriomis susiduria UAB ,,Dotnuvos projektai‘‘ klientai diegdami siūlomas inovacijas, pateikti technologinių inovacijų diegimo valdymo tobulinimo kryptis. Uždaviniai: 1. Išanalizuoti teorinius inovacijų klasifikavimo, jų diegimo valdymo aspektus; 2. Parengti inovacijų diegimo valdymo klientų ūkiuose tyrimo metodiką. 3. Nustatyti ir išanalizuoti inovacijų diegimo problemas bei galimybes UAB ,,Dotnuvos projektai‘‘ klientų ūkiuose. 4. Parengti inovacijų diegimo valdymo tobulinimo kryptis. Tyrimo metodai: mokslinės literatūros analizės ir sintezės, palyginimo, grafinio vaizdavimo apklausos metodai. Tyrimo rezultatai: o pirmoje darbo dalyje pateikta lietuvių bei užsienio autorių mokslinė analizė inovacijų sampratos ir esmės, klasifikavimo bei inovacijų valdymo klausimais. o antroje darbo dalyje supažindinta su UAB ,,Dotnuvos projektai‘‘ veikla taip pat pateiktas tyrimo detalus planas, kurio metu siekta nustatyti problemos ir galimybės diegiant inovacijas UAB ,,Dotnuvos projektai‘‘ klientų ūkiuose. o trečioje darbo dalyje pateikta apklausos rezultatų analizė, taip pat pateikta inovacijų diegimo valdymo tobulinimo kryptys. Tyrimo rezultatai skelbti studentų mokslinėje konferencijoje ,,Jaunasisis mokslininkas 2014‘‘.
Research object – installation of technological innovation by UAB ,,Dotnuvos projektai'' in clients' farms. Research aim – to indentify problems faced by clients of UAB ,,Dotnuvos projektai‘‘ in installation of proposed innovation, to propose the direction for technological innovation installation management improvements. Objectives: 1. To analyze theoretical aspects of innovations classification and installation management; 2. To prepare research methodology for innovation installation management in clients' farms; 3. To identify and analyze innovation installation problems and opportunities in UAB ,,Dotnuvos projektai'' client farms; 4. To prepare directions for innovation installation management inprovements. Research metods: synthesis and analysis of scientific literature, comparison, graphical representation, interview. Research results: o the first part of work presents concept, essence, classification and management of innovations as described in the Lithuanian and foreign scientific literature. o the second part of work introduces activities of UAB ,,Dotnuvos projektai‘‘, presents detailed research plan to analyse problems and oppurtunities in innovation installation in UAB ,,Dotnuvos projektai‘‘ clients' farms. o the third part of work analyses result of accomplished research, also proposes the directions of innovation installation management improvements. The research results are published at the students’ scientific conference: „Young Scientist 2014“.
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Куприянов, Александр Владимирович. "Обеспечения качества высокоточных соединений в условиях серийного производства на основе информационного сопровождения технологического процесса сборки". Thesis, НТУ "ХПИ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22920.

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Диссертация на соискание ученой степени доктора технических наук по специальности 05.02.08 – технология машиностроения. Национальный технический университет "Харьковский политехнический институт", Харьков, 2016. В диссертации решена народнохозяйственная проблема современного машиностроения, заключающаяся в обеспечении сборки высококачественных соединений из деталей рядового качества в условиях серийного производства. На основе анализа методов получения высокоточных соединений обоснованы принципы построения технологических процессов комплектования и сборки, обеспечивающие требуемую точность в серийном производстве. Предложенные подходы, базирующиеся на использовании информации о действительных размерах деталей, являются общими для изделий среднего машиностроения и исключают незавершенное производство, обеспечивают минимизацию разброса параметров соединений в партии без необходимости повышения точности изготовления сопрягаемых деталей. Предложены новые методы комплектования на основе ранжирования, которые позволяют достичь точности, сравнимой с селективной сборкой. Статистическое моделирование показало технологические преимущества предлагаемых методов комплектования перед селективным комплектованием: отсутствие необходимости в большой серийности – эффективно уже при 10 комплектах, хорошие результаты при 20 – 50 комплектах; уменьшение незавершенного производства; более эффективное уменьшение разброса размеров замыкающего звена размерной цепи; простота компьютерной реализации алгоритма комплектования; устойчивость к изменениям параметров законов распределения размеров и недостаточной точности измерительного прибора, применимость как для двухзвенных, так и для многозвенных соединений. Новые методы комплектования опробованы в условиях производства высокоточных изделий топливной аппаратуры. Универсальная система контроля позволяет давать оценку действительным размерам с точки зрения достигаемой точности, для чего предложено использовать функцию убыли годности. В системе контроля годность размера непрерывно улучшается по мере приближения к оптимальному размеру. Устанавливая диапазоны годности, детали делят на категории качества. Предложенная методика позволяет проводить расчет размерных цепей, гарантирующий требуемую точность замыкающего звена для изделий повышенного качества. Оценку технологического процесса с точки зрения точности размеров предложено проводить при помощи функции плотности распределения годности размеров, которая представляет собой проекцию плотности распределения размера на функцию убыли годности. Усовершенствована статистическая трехпараметрическая модель прочности соединений с натягом, собираемых с термовоздействием, на сдвиг, которая определяет гарантированный нижний предел прочности при малом объеме испытаний. Предложенные оценки позволяют определять параметры модели, методика расчета показателей прочности цилиндрических соединений с натягом на сдвиг апробирована и рекомендуется для изделий средних размеров. Проведенные исследования позволяют сделать вывод, что прочность цилиндрического соединения с натягом, собранного с термовоздействием, при наличии погрешности геометрии формы снижается существенно, до трети. Наиболее неблагоприятна седлообразность, затем овальность и конусообразность, бочкообразность не приводит к существенному снижению. Чем больше габариты соединения, тем меньше влияние погрешности геометрии на прочность соединения с натягом. Рекомендуется более жесткое нормирование погрешности геометрии формы при изготовлении деталей ответственных соединений с натягом. Оно позволяет избежать значительного снижения прочности, так что снижение прочности не превышает 15%. Разработанные подходы к компьютерному моделированию индукционного нагрева деталей позволяют учитывать неравномерный нагрев различных участков детали и получать температурное поле, поле напряжений и деформаций при различных конструкциях индукционных нагревателей. Неравномерный нагрев дает переменные во времени звенья технологической сборочной размерной цепи, учет которых позволяет обеспечить качество сборки высокоточных соединений. Разработанная компьютерная программа для автоматизации процесса комплектования может применяться в условиях производства. Компьютерная программа задает, какие детали нужно взять в каждый комплект для получения соединений наилучшего качества, и приводит численные результаты эффективности комплектования. На основе предложенного комплекса лимитирующих точностных показателей сборки разработан проект стандарта организации «Соединения неразъемные с натягом, собираемые тепловым методом. Общие требования при проектировании, изготовлении и монтаже». В стандарте описаны методы, инструменты и критерии разделения изделий на три категории качества. Результаты исследования апробированы на серийных изделиях и внедрены на машиностроительных предприятиях Украины.
Thesis for granting the Degree of Doctor of Technical sciences in speciality 05.02.08 – Manufacturing engineering. National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2016. The thesis has solved a manufacturing problem of modern manufacturing engineering, which is connected to ensuring the assembly of high-quality joints from parts of ordinary quality in conditions of serial production. Considering the use and management of information on the actual size of the parts a method of kitting during the assembly has been proposed, which excludes incomplete production, provides minimization of joint parameters scatter in the party without the necessity of increasing the accuracy in the production of the combined parts. The effectiveness of the method has been thoroughly studied and a conclusion has been made about its applicability in conditions of serial production. An approach which divides the parts into quality categories according to the degree of approximation to the actual size of nominal characteristics has been proposed, and a calculation of dimensional chains based on the mentioned approach has been tested. The efficiency model for a cylindrical joint with pressure has been improved, and the model has been tested on experimental joints. The effect of the shape geometry errors on the efficiency of the joint with pressure assembled with heating has been studied, and advice on modelling the assembly process of joints assembled with heating has been given. The research results have been tested on serial products and implemented at machine-building enterprises of Ukraine.
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6

Купріянов, Олександр Володимирович. "Забезпечення якості високоточних з'єднань в умовах серійного виробництва на основі інформаційного супроводу технологічного процесу складання". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22921.

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Анотація:
Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.02.08 – технологія машинобудування. Національний технічний університет "Харківський політехнічний інститут", Харків, 2016. У дисертації вирішено народногосподарську проблему сучасного машинобудування, яка полягає в забезпечення складання високоякісних з’єднань із деталей рядової якості в умовах серійного виробництва. На основі використання і управління інформацією про дійсні розміри деталей запропоновано метод комплектування під складання, який виключає незавершене виробництво, забезпечує мінімізацію розкиду параметрів з’єднань в партії без необхідності підвищення точності виготовлення деталей, що сполучаються. Ефективність методу всебічно вивчено і зроблено висновок про його застосовність в умовах серійного виробництва. Запропоновано підхід до поділу деталей на категорії якості на основі ступеня наближення дійсного розміру до рекомендованого конструктором, і випробувано розрахунок розмірних ланцюгів на його основі. Удосконалено модель міцності циліндричного з’єднання з натягом, модель випробувано на експериментальних з’єднаннях. Досліджено вплив похибки геометрії форми на міцність з’єднання з натягом, зібраного з термодією, дано рекомендації з моделювання процесу складання з’єднань, що збираються з нагрівом. Результати досліджень апробовано на серійних виробах і впроваджено на машинобудівних підприємствах України.
Thesis for granting the Degree of Doctor of Technical sciences in speciality 05.02.08 – Manufacturing engineering. National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2016. The thesis has solved a manufacturing problem of modern manufacturing engineering, which is connected to ensuring the assembly of high-quality joints from parts of ordinary quality in conditions of serial production. Considering the use and management of information on the actual size of the parts a method of kitting during the assembly has been proposed, which excludes incomplete production, provides minimization of joint parameters scatter in the party without the necessity of increasing the accuracy in the production of the combined parts. The effectiveness of the method has been thoroughly studied and a conclusion has been made about its applicability in conditions of serial production. An approach which divides the parts into quality categories according to the degree of approximation to the actual size of nominal characteristics has been proposed, and a calculation of dimensional chains based on the mentioned approach has been tested. The efficiency model for a cylindrical joint with pressure has been improved, and the model has been tested on experimental joints. The effect of the shape geometry errors on the efficiency of the joint with pressure assembled with heating has been studied, and advice on modelling the assembly process of joints assembled with heating has been given. The research results have been tested on serial products and implemented at machine-building enterprises of Ukraine.
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7

Duchsherer, Christopher Joseph. "On the Profitability of UAS-Based NDVI Imagery for Variable Rate Nitrogen Prescriptions in Corn and Wheat in North Dakota." Thesis, North Dakota State University, 2018. https://hdl.handle.net/10365/28747.

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This study examines the grower’s decision to invest in precision agriculture technologies especially in-season variable rate nitrogen applications based on NDVI data collected from UAVs. NDVI, yield, soil, and other field data were collected from multiple corn and wheat fields located throughout North Dakota. Each field was divided into management zones to determine profitability of utilizing the technology based on in-season nitrogen applications for the grower’s field practice, high, low, and no applications. Results show that using the NDVI data collected from UAVs can be profitable when the grower decides to make the decision to apply nitrogen in a sidedress application.
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8

Карпусь, В. Є., та М. С. Іванова. "Конструктивно-технологічний аналіз обробки отворів комбінованими осьовими інструментами". Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/11394.

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9

Анциферова, Олеся Олександрівна. "Технологічне забезпечення точності та якості поверхонь зубчастих коліс при удосконаленні методу зубошліфування". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38013.

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Анотація:
Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.02.08 – технологія машинобудування. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2018. Дисертацію присвячено вирішенню проблеми підвищення продуктивності процесу зубошліфування на основі досягнення високої необхідної точності і якості поверхневого шару з оцінкою комплексного впливу конструктивно-технологічних факторів на процес формування поверхневого шару зубів зубчастих коліс з метою підвищення їх зносостійкості, а також продуктивності технологічного процесу в оптимальних виробничих умовах. Отримала подальший розвиток теоретико-експериментальна залежність формоутворення якості поверхневого шару та способу переривчастого зубошліфування, яка відрізняється врахуванням геометричних параметрів переривчастого кругу, що дозволило прогнозувати експлуатаційні властивості зубчастих коліс. Удосконалені технологічні засоби стабілізації оптимальних режимів переривчастого зубошліфування, які дозволяють підвищити якість обробки зубчастих коліс. Встановлена закономірність зменшення засалювання переривчастого зубошліфувального кругу та температури у зоні контакту, яке впливає на забезпечення експлуатаційних властивостей поверхонь зубів.
Thesis for scientific degree of Candidate of Technical Sciences on speciality 05.02.08 − Manufacturing Engineering. − National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2018. The dissertation is devoted to solving the problem of increasing the productivity of the process of grinding on the basis of achieving the high required accuracy and quality of the surface layer with an assessment of the complex influence of structural and technological factors on the formation of the surface layer of teeth of gear wheels in order to increase their wear resistance, as well as the productivity of the technological process in optimal production conditions. The theoretical and experimental dependence of the formation of the quality of the surface layer and the method of intermittent gear grinding has been further developed, which differs from the geometric parameters of the discontinuous circle, which allowed predicting the operational properties of the gears. Improved technological means of stabilizing optimal modes of intermittent gear grinding, which allow to improve the quality of machining of gear wheels. The regularity of reduction of salting of intermittent gear grinding wheels and temperature in the contact zone is established, which affects the maintenance of the operational properties of tooth surfaces.
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10

Montija, Fernando Celotto. "Aspectos da variabilidade experimental do ensaio de módulo de deformação do concreto." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-01042009-135948/.

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Esta dissertação insere-se nas áreas de qualidade laboratorial e de ensaios de controle de concreto, especificamente quanto à propriedade módulo estático de deformação ou módulo de Young. A motivação do trabalho é a elevada variabilidade de resultados experimentais observada pelo meio técnico nacional em ensaios interlaboratoriais, cujos resultados indicam desvios-padrão totais da ordem de 3,5 GPa, valor significativo para o controle tecnológico de obras de construção civil. Os objetivos buscados foram a identificação das parcelas da variabilidade oriundas da produção e do ensaio, com especial atenção àquela originada na instrumentação para medida das deformações durante o ensaio, e a discussão da aplicabilidade do conceito semiprobabilístico normativo à propriedade módulo de deformação do concreto. Além disso, a própria discussão da aplicabilidade da sistemática de pesquisa e análise sobre este tipo de ensaio e de material constou como um objetivo do trabalho. Para tal, desenvolveu-se um programa experimental em duas etapas: a primeira foi destinada às avaliações de acurácia (precisão e exatidão) do método de ensaio. As avaliações se deram segundo roteiros da área metrológica para validação de métodos e sistemas de medida. De quatro instrumentações para medida das deformações testadas, uma se mostrou mais precisa (identificada como clip gages) e outra se mostrou a mais suscetível a erros sistemáticos e aleatórios entre as testadas (identificada como compressômetro com dois relógios comparadores). Recomendou-se a ampliação do programa experimental para o âmbito interlaboratorial, pois, a rigor, o método de ensaio vigente não poderia ser considerado validado em termos de acurácia baseando-se unicamente nos resultados deste programa experimental. Porém, concluiu-se pela possibilidade de aceitação prática do método independentemente da utilização de três de um total de quatro tipos de instrumentação para medida das deformações testados em ensaio, sem que houvesse prejuízo para a produção ou o controle tecnológico usual desta propriedade. Na segunda etapa, obteve-se um Diagrama de Dosagem e estudou-se um cenário de fornecimento de concreto sob critérios estatísticos diferentes de atendimento à especificação de módulo de deformação: utilização do valor característico e do valor médio, com diferença de 4 GPa entre eles. Estimou-se um aumento da ordem de 9% no deslocamento vertical de uma viga simples bi-apoiada quando executada com o concreto de menor módulo em relação à execução com o de maior módulo. Por sua vez, o concreto de maior módulo exigiria um aumento no consumo de cimento da ordem de até 200 kg/m3, se conservados todos os insumos materiais e os demais parâmetros tecnológicos contidos nos traços. Concluiu-se pela aplicabilidade do uso da sistemática empregada na avaliação da acurácia do método de ensaio e do uso do conceito semiprobabilístico para esta propriedade.
This work is developed into the areas of laboratorial quality and concrete control tests, specifically focusing on the static modulus of elasticity or Young´s modulus. The motivation of this work is the high variability of experimental results observed by national technicians in interlaboratorial tests. These results show total standard deviations of around 3.5 GPa, a significant value for the technological control for civil construction. The main objectives are the identification of the variability fragments derived from the production and test, specially the ones related to the instrumentation for measuring deformations during the test, and the discussion of the semi-probabilistic concept applicability on the concrete Young´s modulus control. Moreover, the discussion of the applicability of the procedure used in this work and its analysis are also objective pursued here. The experimental program was developed in two steps: the first step covered the accuracy assessments (precision and exactness) of test method. The assessments were carried out according to instructions from Metrology concepts for the validation of the methods and the measure systems. One out of four instrumentations for measuring the tested deformations proved to be more precise (identified as clip gages) and another one proved to be more susceptible to systematic and random errors (identified as a compressometer with two dial indicators). The extension of the experimental program to an interlaboratorial scope is recommended because the current test method could not be considered valid based only on the results of this experimental program. However, it was shown that the practical acceptance of the test method for three among the four kinds of instrumentations analyzed, without damaging the production or the usual technological control of this property, is possible. On the second step, a mix design diagram was obtained and a case of supply of concrete under different statistical criteria (fulfillment the modulus of elasticity specification): the use of the characteristic value and the average value, with difference of 4 GPa between them. An increase of 9% on the vertical transference of a simple dual supported beam was observed when using a lower modulus concrete, when compared to another one with a higher modulus. On the other hand, the modulus increase would require an increment in the cement consumption up to 200 kg per cubic meter, if all the material inputs and further technological parameters is maintained. The final conclusion was that the procedure used on the assessment of the test method accuracy and the semi-probabilistic concept on this material property is applicable.
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Книги з теми "Technological precision"

1

Governometrics and technological innovation for public policy design and precision. Hershey: Information Science Reference, 2014.

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2

Berberov, Sergey, Mihail Tamarkin, Galina Prokopec, and Valeriy Lebedev. Technological equipment. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1037188.

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General information about devices, their classification and structure is presented; theoretical bases of basing, taking into account the specifics of the choice of basing schemes when choosing technological bases; designs of the main elements of machine tools, methods of their precision and power calculations of devices; design features of devices for various technological systems of mechanical processing, including CNC; features of control and measuring devices; individual issues of mechanization, automation, unification and standardization of devices; methods of designing special devices. Special attention is paid to the educational and methodological support of practical training of specialists. Meets the requirements of the federal state educational standards of secondary vocational education of the latest generation. It is intended for students of secondary vocational education institutions studying in the specialty 15.02.08 "Technology of mechanical engineering".
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3

National Conference on Investment Casting (2003 Central Mechanical Engineering Research Institute). Proceedings of the National Conference on Investment Casting: NCIC 2003. Edited by Mondal Biswanath and Central Mechanical Engineering Research Institute. New Delhi: Allied Publishers, 2004.

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4

Fangwei, Zhang, and Dong Ruixue, eds. Du ling feng sao jing que zhan. Shijiazhuang Shi: Henan ke xue ji shu zhu ban she, 2001.

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5

Benner, Mary. Close to you?: Bias and precision in patent-based measures of technological proximity. Cambridge, Mass: National Bureau of Economic Research, 2007.

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6

Benner, Mary. Close to you?: Bias and precision in patent-based measures of technological proximity. Cambridge, MA: National Bureau of Economic Research, 2007.

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7

Banks, Aiden, and Scott F. Melves. Horizons in crop production: Precision agriculture and no-till farming. Hauppauge, N.Y: Nova Science Publishers, 2012.

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8

Huaibi, Zhang, and Zhang Junjian, eds. Jing que zuo zhan. 2nd ed. Beijing: Jun shi yi wen chu ban she, 2010.

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9

Huaibi, Zhang, and Zhao Zongqian, eds. Jing que zuo zhan. Beijing: Jun shi yi wen chu ban she, 2006.

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10

Huaibi, Zhang, and Zhang Junjian, eds. Jing que zuo zhan. 2nd ed. Beijing: Jun shi yi wen chu ban she, 2010.

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Частини книг з теми "Technological precision"

1

Omran, El-Sayed E., and Abdelazim M. Negm. "Smart Sensing System for Precision Agriculture." In Technological and Modern Irrigation Environment in Egypt, 77–105. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30375-4_5.

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2

Dimakov, S. A. "Resonators for Lasers Used in Precision Technological Operations." In Optical Resonators — Science and Engineering, 311–26. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-2486-9_20.

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Brousseau, Emmanuel, Richard Barton, Stefan Dimov, and Samuel Bigot. "A Methodology for Evaluating the Technological Maturity of Micro and Nano Fabrication Processes." In Precision Assembly Technologies and Systems, 329–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11598-1_38.

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Yin, Meina, and Hongjun Liu. "Technological Framework the Precision Teaching Based on Big Data." In Lecture Notes on Data Engineering and Communications Technologies, 394–401. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5857-0_50.

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Masner, Jan, Jan Jarolímek, Michal Stočes, Pavel Šimek, Jiří Vaněk, and Vladimír Očenášek. "User-Technological Index of Precision Agriculture: Data Collection and Visualization." In Innovative Approaches and Applications for Sustainable Rural Development, 169–84. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-02312-6_10.

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Sunday, T. U. "Precision Agricultural Management: Practical Consideration and Technological Issues for Small Farmers and Producers." In Proceedings of the Third International Conference on Precision Agriculture, 1189. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/1996.precisionagproc3.c146.

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Pylypchuk, Mariya, Lidiia Dziuba, Ihor Rebezniuk, Oksana Chmyr, and Mykhailo Burdiak. "Modeling Parametric Failures of Woodworking Machines According to the Technological Precision Criterion." In Lecture Notes in Mechanical Engineering, 119–26. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-91327-4_12.

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Ochoa-Zezzatti, Alberto, José Mejia, Jose Diaz, Patricia Sánchez-Solís, Vicente García, Gilberto Rivera, and Rogelio Florencia-Juárez. "Analysis of Mental Fatigue Under Delivery Pressure and Considering Creativity and Precision to Organize and Distribute a Diorama to Represent Social Issues Based on Cultural Algorithms." In Technological and Industrial Applications Associated with Intelligent Logistics, 405–16. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68655-0_20.

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Paltaki, Aikaterini, and Anastasios Michailidis. "Introduction, Definition, Examples (Social networks, Value Chains) - Sharing is caring, Develop hub for SPA, Flexible methodologies, Hubs or Clusters innovation facilitators, Social aspects of SPA, social networks, value chain agreement." In Manuali – Scienze Tecnologiche, 43. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-044-3.43.

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Анотація:
Recent technological developments and social media have opened up a multitude of opportunities for farmers and agricultural companies to communicate with their customers and marketers. Especially in the EU agri-food sector, smart use of knowledge, research and innovation is the main source of productivity growth. A new digital innovation hub in Precision Agriculture can drive the digital transformation of Europe's agro-food sector, boosting innovation and growth. Moreover, this hub could also play an important role in the exploitation of opinion leadership in agricultural technology and productivity.
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Vieri, Marco, Daniele Sarri, Stefania Lombardo, Marco Rimediotti, Riccardo Lisci, Valentina De Pascale, Eleonora Salvini, Carolina Perna, and Andrea Pagliai. "Tech innovation systems in agriculture." In Manuali – Scienze Tecnologiche, 4. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-044-3.04.

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The technological models related to farm machinery have had a different evolution in relation to structural and social conditions. Thus we have the American - Western model, capital intensive, with large machines and at the opposite the Asian model, labor intensive, with small and sophisticated machines suitable for small and family farms. Even if, in the large scale machinery, the implementation of new technologies requires less investment in percentage, all farm technical management system may have advantages by the new technology: a) measuring parameters and processes, b) assessing data by informatics models giving information optimization c) availabilit6y of tools to manage the single specific resource. That is Precision Farming.
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Тези доповідей конференцій з теми "Technological precision"

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Yuriy, Ilyukhin, and Kolesnichenko Ruslan. "High-Precision Servo Drives Technological Robots. Problems and Solutions." In 2018 2nd School on Dynamics of Complex Networks and their Application in Intellectual Robotics (DCNAIR). IEEE, 2018. http://dx.doi.org/10.1109/dcnair.2018.8589046.

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Yamnikov, Aleksandr, Elena Rodionova, and Ivan Matveev. "MANAGEMENT OF TECHNOLOGICAL HERITAGE ACCURACY ASSEMBLY OF HIGH-PRECISION PRODUCTS." In PROBLEMS OF APPLIED MECHANICS. Bryansk State Technical University, 2020. http://dx.doi.org/10.30987/conferencearticle_5fd1ed04426373.79196374.

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The article is devoted to solving the problems of the production of thin-walled cases, where it is important to improve the accuracy of manufacturing. Based on the foregoing, it was decided to conduct research work. The technology of processing a long body from a hot-rolled thick-walled pipe using drawing is considered, which guarantees the required shape accuracy and the least effect of the properties of the initial state of the workpiece in comparison with the technology of manufacturing bodies by stamping from sheet metal. As a result of the work, it was determined that the difference in the diameter of the housing bore when basing on the pulling operation is mirrored onto the accuracy of the inner surface of the housing, and the maximum beating of the housing stem obeys the Rayleigh distribution law and fits into the tolerance with a two-fold margin. Experimental studies have shown that an increase in the accuracy of manufacturing extended bodies can be guaranteed by reducing the technological tolerance for the inner base hole of the workpiece for pulling
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Verkhogliad, Alexander G. "Laser technological system for precision 3D material treatment and inspection." In SPIE Proceedings, edited by Vadim P. Veiko. SPIE, 2008. http://dx.doi.org/10.1117/12.786943.

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Yamnikov, A. S., E. N. Rodionova, and I. A. Matveev. "Management of technological heritage accuracy assembly of high-precision products." In PROCEEDINGS INTERNATIONAL CONFERENCE “PROBLEMS OF APPLIED MECHANICS”. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0047451.

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Vasudevan, Ashwin, D. Ajith Kumar, and N. S. Bhuvaneswari. "Precision farming using unmanned aerial and ground vehicles." In 2016 IEEE Technological Innovations in ICT for Agriculture and Rural Development (TIAR). IEEE, 2016. http://dx.doi.org/10.1109/tiar.2016.7801229.

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Bhagyashree, S., S. Prashanthi, and K. M. Anandkumar. "Enhancing network lifetime in precision agriculture using Apteen protocol." In 2015 IEEE Technological Innovation in ICT for Agriculture and Rural Development (TIAR). IEEE, 2015. http://dx.doi.org/10.1109/tiar.2015.7358529.

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Odara, Stephen, Zain Khan, and Taha Selim Ustun. "Integration of Precision Agriculture and SmartGrid technologies for sustainable development." In 2015 IEEE Technological Innovation in ICT for Agriculture and Rural Development (TIAR). IEEE, 2015. http://dx.doi.org/10.1109/tiar.2015.7358536.

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Starchenko, Evgeniy I., Nikolay N. Prokopenko, and Vladislav Ya Yugai. "The precision voltage references for the radiation-hardened bi-FET technological process." In 2014 East-West Design & Test Symposium (EWDTS). IEEE, 2014. http://dx.doi.org/10.1109/ewdts.2014.7027079.

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Gavarieva, Ksenia, and Larisa Simonova. "Control of Technological Parameters of Precision Stamping Process Based on Fuzzy Logic." In 2018 International Russian Automation Conference (RusAutoCon). IEEE, 2018. http://dx.doi.org/10.1109/rusautocon.2018.8501762.

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Wang, X. D., Y. Luo, X. W. Zhang, L. Teng, W. M. Yang, and L. Chen. "Precision equipments for assembly of miniature devices: System architecture and technological approaches." In 2013 IEEE International Symposium on Assembly and Manufacturing (ISAM). IEEE, 2013. http://dx.doi.org/10.1109/isam.2013.6643513.

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Звіти організацій з теми "Technological precision"

1

Benner, Mary, and Joel Waldfogel. Close to You? Bias and Precision in Patent-Based Measures of Technological Proximity. Cambridge, MA: National Bureau of Economic Research, August 2007. http://dx.doi.org/10.3386/w13322.

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