История Императорского русского технического общества (ИРТО), образованного в 1866 году. Презентация подготовлена в рамках Спецпроекта "ИРТО 150 лет"
"Русским техническим обществом" (http://www.technicalsociety.ru/)
Kylie Brown is seeking a career in business strategy and international development. She has a BS in Business Management from BYU with a 3.94 GPA and minored in International Development Studies. Her experience includes strategic consulting for companies in Malawi, Utah, Portugal, and founding her own culinary business. She is fluent in English and Portuguese with skills in data analysis, presentations, and research.
U.S. Optical Instrument And Lens Market. Analysis And Forecast to 2020IndexBox Marketing
IndexBox Marketing has just published its report: “U.S. Optical Instrument And Lens Market. Analysis And Forecast to 2020”.
The report provides an in-depth analysis of the U.S. optical instrument and lens market. It presents the latest data of the market size and volume, domestic production, exports and imports, price dynamics and turnover in the industry. In addition, the report contains insightful information about the industry, including industry life cycle, business locations, productivity, employment and many other crucial aspects. The Company Profiles section contains relevant data on the major players in the industry.
This document discusses functional foods and strategies for enhancing nutrients in foods. It describes naturally occurring functional foods like fish, fermented milk, and fruits/vegetables. It also discusses isolating phytochemicals from rich sources and adding them to foods. Some reasons for enhancement include improving bioavailability, protecting phytochemicals from degradation, and making nutrients more accessible. Specific examples discussed include enhancing omega-3 fatty acids in pork and eggs by feeding flax seeds, and using microencapsulation and enzymic bioconversion to protect antioxidants. Nanotechnology is also mentioned as a potential method.
Abri Gisela Crenshaw is a student seeking to pursue a career in engineering and science, specializing in electrical and computer science engineering. She has a 4.0 GPA and is bilingual in English and Spanish. She has leadership experience as founder and president of the Inequality Club and secretary of Latinas Unidas Club. She also has internship experience directing traffic at the Renaissance Festival and mentoring elementary school students through Junior Achievement. Her awards include Junior Marshall for academic excellence and several honors from her involvement in JROTC and math clubs.
История Императорского русского технического общества (ИРТО), образованного в 1866 году. Презентация подготовлена в рамках Спецпроекта "ИРТО 150 лет"
"Русским техническим обществом" (http://www.technicalsociety.ru/)
Kylie Brown is seeking a career in business strategy and international development. She has a BS in Business Management from BYU with a 3.94 GPA and minored in International Development Studies. Her experience includes strategic consulting for companies in Malawi, Utah, Portugal, and founding her own culinary business. She is fluent in English and Portuguese with skills in data analysis, presentations, and research.
U.S. Optical Instrument And Lens Market. Analysis And Forecast to 2020IndexBox Marketing
IndexBox Marketing has just published its report: “U.S. Optical Instrument And Lens Market. Analysis And Forecast to 2020”.
The report provides an in-depth analysis of the U.S. optical instrument and lens market. It presents the latest data of the market size and volume, domestic production, exports and imports, price dynamics and turnover in the industry. In addition, the report contains insightful information about the industry, including industry life cycle, business locations, productivity, employment and many other crucial aspects. The Company Profiles section contains relevant data on the major players in the industry.
This document discusses functional foods and strategies for enhancing nutrients in foods. It describes naturally occurring functional foods like fish, fermented milk, and fruits/vegetables. It also discusses isolating phytochemicals from rich sources and adding them to foods. Some reasons for enhancement include improving bioavailability, protecting phytochemicals from degradation, and making nutrients more accessible. Specific examples discussed include enhancing omega-3 fatty acids in pork and eggs by feeding flax seeds, and using microencapsulation and enzymic bioconversion to protect antioxidants. Nanotechnology is also mentioned as a potential method.
Abri Gisela Crenshaw is a student seeking to pursue a career in engineering and science, specializing in electrical and computer science engineering. She has a 4.0 GPA and is bilingual in English and Spanish. She has leadership experience as founder and president of the Inequality Club and secretary of Latinas Unidas Club. She also has internship experience directing traffic at the Renaissance Festival and mentoring elementary school students through Junior Achievement. Her awards include Junior Marshall for academic excellence and several honors from her involvement in JROTC and math clubs.
Control of HVDC Transmission System Based on MMC with Three-Level Flying Capa...Anand Parakkat Parambil
The document contains a list of figures for chapters 3-5 of a thesis on controlling an HVDC transmission system based on modular multilevel converters (MMC) with three-level flying capacitor submodules. Chapter 3 describes the system and modeling of the MMC, including the topology and operation of the converter. Chapter 4 discusses the control and modulation of the MMC-HVDC system, including AC and DC current control loops for the two MMC stations and arm balancing control. Chapter 5 presents simulation results evaluating the system.
This document discusses droop speed control for synchronous generators connected to an electrical grid. It explains that the speed of synchronous generators and their prime movers is fixed by the grid frequency. Droop speed control uses proportional control to allow generators to share load changes by increasing their power output when the grid frequency decreases. It does this by increasing the speed reference, which causes the actual speed to "droop" below the reference and provide more torque and power to the grid. This load sharing behavior occurs automatically based on the amount of droop each generator is programmed for.
Control of modular multilevel converter based hvdc systems during asymmetrica...Ghazal Falahi
Modular multilevel converter (MMC) is a relatively new and promising topology for HVDC systems. HVDC systems should remain connected during grid faults and isolate the fault. This paper studies the dynamic performance of transformer-less MMC integrated HVDC systems during unbalanced conditions and asymmetrical grid faults. It proposes a new control technique to improve unbalanced system’s performance. The objective of the proposed controller is eliminating negative and zero sequence currents and to improve the overall performance. The controller calculates zero and negative sequence reference voltages and eliminates zero and negative sequence currents without using any current regulator. Therefore the controller is very fast and robust. The effectiveness of the proposed control technique has been validated by EMTDC /PSCAD simulations.
This is a presentation of research in the field of automation of steam turbines power upon 200MW of the group of Process Automation at Institute Mihajlo Pupin, Belgrade. In short, this is a model of steam turbine, which is used during the development of control algorithms steam turbine, power plant personnel training and optimization of steam turbine operation. The model has been adapted to work in real time and is applied in the form of hardware in the loop (HIL) simulation.
An auto-collimator is an optical instrument that uses a collimator and telescope combined to measure small angular differences very sensitively and accurately. It works by projecting parallel light using a collimator and measuring the linear displacement of the reflected light when the reflector is tilted, which corresponds to twice the angle of tilt. The auto-collimator responds only to tilts of the reflector, and its focal length and aperture determine its measurement range and sensitivity. It can be used to measure straightness, flatness, angles, squareness, and parallelism.
Este documento presenta una taxonomía para clasificar las principales herramientas de la Web 2.0 en cuatro categorías: redes sociales, contenidos, organización inteligente de información y aplicaciones/servicios. Proporciona ejemplos destacados de plataformas populares para cada categoría, describiendo brevemente su propósito y funcionalidad. El objetivo es ayudar a los lectores a seleccionar las herramientas más adecuadas para sus necesidades.
Este documento presenta el Código Penal de Ecuador de 1971. Resume la resolución de la Comisión Jurídica para proceder a la codificación del Código Penal, publicarlo en el Registro Oficial para que tenga fuerza obligatoria, y ordenar la nueva enumeración de sus artículos. Incluye los Títulos I y II sobre las leyes penales, infracciones en general, infracción consumada y tentativa.
지속 가능한 삶
청정삶터 만들기 5 | 최광수 4
특집기획 - 청정삶터 만들기 프로젝트
청정삶터 시범지역, 마산 지회를 찾아가다 | 편집부 7
지역 활동 소식
서울 역촌동 벼룩장터, ‘빈그릇 캠페인’ | 박소현 17
서울 독산초등학교에서 ‘빈그릇 교육’ | 박소현 20
에코 캠퍼스 동아리 탐방소식
다른 대학 에코캠퍼스 동아리를 찾아서 | 박성용 22
La resonancia ocurre cuando la frecuencia de excitación está cerca de la frecuencia natural de una estructura. La nota producida por una cuerda o tubo depende de factores como su longitud, tensión y grosor, y solo puede producir notas formadas por la onda fundamental y sus armónicos. El análisis de Fourier descompone cualquier señal periódica como una suma de funciones seno y coseno de frecuencias múltiplos de la frecuencia fundamental.
Voxopop es un foro de debate en línea donde las personas pueden dar sus opiniones sobre temas específicos. Los usuarios pueden unirse o iniciar sus propios grupos llamados Talkgroups para compartir intereses y pasiones con personas de todo el mundo utilizando su voz real. Voxopop busca ser una nueva forma de conversar en línea que es ideal para familias, amigos, grupos de interés y profesores.
The document discusses a new assurance standard for greenhouse gas (GHG) statements issued by the New Zealand Auditing and Assurance Standards Board. The standard aims to enhance the quality and consistency of assurance engagements on GHG statements. It will conform with an international standard issued by the IAASB. The standard provides guidance for accountants performing assurance on GHG statements, which some businesses may need to disclose voluntarily or as required by regulation. Adopting the new standard could become more important if mandatory GHG reporting is implemented in New Zealand similar to requirements in Australia.
Белорусская земля подарила мировой науке немало известных имен. Но открытия и изобретения делались и делаются не только в академических институтах или конструкторских бюро предприятий ...
Анатолий Ганькевич – человек из созвездия героевUnbib Mk
Горбуров Е. Г. Анатолий Ганькевич — человек из созвездия героев / Е. Г. Горбуров, К. Е. Горбуров. — Николаев : Издательство Ирины Гудым, 2011.
— 60 с. : ил. — (Легендарные имена).
Control of HVDC Transmission System Based on MMC with Three-Level Flying Capa...Anand Parakkat Parambil
The document contains a list of figures for chapters 3-5 of a thesis on controlling an HVDC transmission system based on modular multilevel converters (MMC) with three-level flying capacitor submodules. Chapter 3 describes the system and modeling of the MMC, including the topology and operation of the converter. Chapter 4 discusses the control and modulation of the MMC-HVDC system, including AC and DC current control loops for the two MMC stations and arm balancing control. Chapter 5 presents simulation results evaluating the system.
This document discusses droop speed control for synchronous generators connected to an electrical grid. It explains that the speed of synchronous generators and their prime movers is fixed by the grid frequency. Droop speed control uses proportional control to allow generators to share load changes by increasing their power output when the grid frequency decreases. It does this by increasing the speed reference, which causes the actual speed to "droop" below the reference and provide more torque and power to the grid. This load sharing behavior occurs automatically based on the amount of droop each generator is programmed for.
Control of modular multilevel converter based hvdc systems during asymmetrica...Ghazal Falahi
Modular multilevel converter (MMC) is a relatively new and promising topology for HVDC systems. HVDC systems should remain connected during grid faults and isolate the fault. This paper studies the dynamic performance of transformer-less MMC integrated HVDC systems during unbalanced conditions and asymmetrical grid faults. It proposes a new control technique to improve unbalanced system’s performance. The objective of the proposed controller is eliminating negative and zero sequence currents and to improve the overall performance. The controller calculates zero and negative sequence reference voltages and eliminates zero and negative sequence currents without using any current regulator. Therefore the controller is very fast and robust. The effectiveness of the proposed control technique has been validated by EMTDC /PSCAD simulations.
This is a presentation of research in the field of automation of steam turbines power upon 200MW of the group of Process Automation at Institute Mihajlo Pupin, Belgrade. In short, this is a model of steam turbine, which is used during the development of control algorithms steam turbine, power plant personnel training and optimization of steam turbine operation. The model has been adapted to work in real time and is applied in the form of hardware in the loop (HIL) simulation.
An auto-collimator is an optical instrument that uses a collimator and telescope combined to measure small angular differences very sensitively and accurately. It works by projecting parallel light using a collimator and measuring the linear displacement of the reflected light when the reflector is tilted, which corresponds to twice the angle of tilt. The auto-collimator responds only to tilts of the reflector, and its focal length and aperture determine its measurement range and sensitivity. It can be used to measure straightness, flatness, angles, squareness, and parallelism.
Este documento presenta una taxonomía para clasificar las principales herramientas de la Web 2.0 en cuatro categorías: redes sociales, contenidos, organización inteligente de información y aplicaciones/servicios. Proporciona ejemplos destacados de plataformas populares para cada categoría, describiendo brevemente su propósito y funcionalidad. El objetivo es ayudar a los lectores a seleccionar las herramientas más adecuadas para sus necesidades.
Este documento presenta el Código Penal de Ecuador de 1971. Resume la resolución de la Comisión Jurídica para proceder a la codificación del Código Penal, publicarlo en el Registro Oficial para que tenga fuerza obligatoria, y ordenar la nueva enumeración de sus artículos. Incluye los Títulos I y II sobre las leyes penales, infracciones en general, infracción consumada y tentativa.
지속 가능한 삶
청정삶터 만들기 5 | 최광수 4
특집기획 - 청정삶터 만들기 프로젝트
청정삶터 시범지역, 마산 지회를 찾아가다 | 편집부 7
지역 활동 소식
서울 역촌동 벼룩장터, ‘빈그릇 캠페인’ | 박소현 17
서울 독산초등학교에서 ‘빈그릇 교육’ | 박소현 20
에코 캠퍼스 동아리 탐방소식
다른 대학 에코캠퍼스 동아리를 찾아서 | 박성용 22
La resonancia ocurre cuando la frecuencia de excitación está cerca de la frecuencia natural de una estructura. La nota producida por una cuerda o tubo depende de factores como su longitud, tensión y grosor, y solo puede producir notas formadas por la onda fundamental y sus armónicos. El análisis de Fourier descompone cualquier señal periódica como una suma de funciones seno y coseno de frecuencias múltiplos de la frecuencia fundamental.
Voxopop es un foro de debate en línea donde las personas pueden dar sus opiniones sobre temas específicos. Los usuarios pueden unirse o iniciar sus propios grupos llamados Talkgroups para compartir intereses y pasiones con personas de todo el mundo utilizando su voz real. Voxopop busca ser una nueva forma de conversar en línea que es ideal para familias, amigos, grupos de interés y profesores.
The document discusses a new assurance standard for greenhouse gas (GHG) statements issued by the New Zealand Auditing and Assurance Standards Board. The standard aims to enhance the quality and consistency of assurance engagements on GHG statements. It will conform with an international standard issued by the IAASB. The standard provides guidance for accountants performing assurance on GHG statements, which some businesses may need to disclose voluntarily or as required by regulation. Adopting the new standard could become more important if mandatory GHG reporting is implemented in New Zealand similar to requirements in Australia.
Белорусская земля подарила мировой науке немало известных имен. Но открытия и изобретения делались и делаются не только в академических институтах или конструкторских бюро предприятий ...
Анатолий Ганькевич – человек из созвездия героевUnbib Mk
Горбуров Е. Г. Анатолий Ганькевич — человек из созвездия героев / Е. Г. Горбуров, К. Е. Горбуров. — Николаев : Издательство Ирины Гудым, 2011.
— 60 с. : ил. — (Легендарные имена).
2. История возникновения профессии
Xв. – мастера ремесленники изготовляли оружия, предметы
домашнего обихода;
XIIв. – русские оружейники применяли сверлильные и токарные
уст-ва с ручным приводом и вращательным движением
инструмента;
XIV- XVIвв. – пользовались токарными и сверлильными станками с
вращательным движением от водяной мельницы;
XVIв. – русский механик и изобретатель
А.К. Нартов создал механический суппорт, который перемещался
вдоль обрабатываемой детали.
3. КРАТКАЯ ИСТОРИЧЕСКАЯ
СПРАВКА:
Изобретатель А.К. Нартов создал винторезный, зуборезный и
пилонасекальнный станки.
Русский механик И.П. Кулибин создал станки для изготовления зубчатых
колёс часовых механизмов.
Солдат Я.Т. Батищев построил станки для одновременного сверления 24
ружейных стволов.
Русский учёный Ломоносов построил лоботокарные, сферотокарные и
шлифовальные станки.
С конца XXв.(70-80гг.) – возникла элитная рабочая профессия
СТАНОЧНИК широкого профиля и оператор станков с ЧПУ.
5. Достоинства профессии:
Профессия СТАНОЧНИК широкого профиля, оператор
станков с ЧПУ является одной из ведущих на каждом
машиностроительном предприятии;
Все машины и механизмы состоят из отдельных деталей,
изготовленных из современных металлов и сплавов;
На станках обрабатываются детали:
- гребных валов атомоходов;
- детали космических кораблей;
- детали коробок передач автомобилей;
- детали самых чувствительных медицинских приборов
и другие ответственные детали….
6. Основные требования к
профессии.
Навыки работы на различных
станках;
Навыки настройки и выбора
оптимального режима работы;
Иметь навыки обслуживания и
устранения неполадок;
Контролировать качество
обработки деталей;
Соблюдать правила охраны
труда и организации рабочего
места.
8. Станочник должен уметь:
В совершенстве
владеть навыками
использования
современных
информационных
компьютерных
технологий для
работы на станках с
ЧПУ
12. Условия работы и организация
рабочего места станочника
Современная зона обработки
на станках оформляется с
учётом обеспечения
наименьших затрат
физических сил и нервных
усилий человека;
Рабочее место станочника
должно отвечать требованиям
охраны труда.
13. Смежные профессии:
На базе профессии
«Станочник широкого
профиля, оператор станков с
ЧПУ» возможно освоение
нескольких смежных профессий
Наладчик станков с ЧПУ и
обрабатывающих центров
Контролёр ОТК
Слесарь – ремонтник
промышленного оборудования;
Заточник режущего
инструмента
14. Перспективы профессии:
Знания и умения управлять
сложными механическими и
автоматизированными системами
является хорошей основой для:
дальнейшего повышения
образовательного уровня вплоть
до высшего;
формирования управленческих;
возможность карьерного роста;
постоянная востребованность
работы и высокая оплата труда.