• مقاله با عنوان: تحلیل ارتعاشی سقف مرکب تحت اثر حرکت انسانی
• نویسندگان: سید مرتضی عابدی ، محمدقاسم وتر تمیجانی ، علیرضا میرجلیلی
• محل انتشار: هشتمین کنگره ملی مهندسی عمران - دانشگاه صنعتی نوشیروانی بابل - 17 و 18 اردیبهشت 93
• محور: سازه های فولادی
• فرمت فایل: PDF و شامل 8 صفحه میباشد.
چکیــــده:
امروزه گرایش به سمت استفاده از دهانههای بزرگ ، سیستم سقف سبکتر ، فعالیتهای ورزشی و عملکرد تجهیزات مکانیکی منجر به افزایش تعداد نوسان طبقات و به تبع آن شکایت ساکنان ساختمانها شده است. در این نوشتار به ارزیابی کلی از رفتار سقف کامپوزیت عرشه فولادی در بارگذاری قدم زدن با استفاده از روش اجزای محدود و یافتن بهترین روش برای کاهش ارتعاش سقف پرداخته شده است. بدین منظور چندین کف پس از طراحی استاتیکی، در نرم افزار اجزای محدود Abaqus مدل شده و تحت بار دینامیکی راه رفتن قرارگرفتهاند. با تغییر در پارامترهای موثر بر ارتعاش دال کف، توسط تحلیل تاریخچه زمانی (Time History)، دامنه و فرکانس طبیعی کف استخراج شده وضعیت ارتعاشی سقف با استفاده از مقیاس اصلاح شده ریهر - میستر باحدود احساس بشری مقایسه شده است. نتایج نشان میدهد که استفاده از میراگر جرمی تنظیم شونده در بهبود وضعیت ارتعاشی سقف نقش موثرتری نسبت به دیگر روشهای پیشنهادی دارد.
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by Adam Hunt
حرکت به حرکت با استراتژی شطرنج
توسط آدام هونت
فرمت:PDF
تعداد صفحات: 417
ناشر:(Everyman Chess(May 7, 2013
اورجینال با قابلیت کپی و چاپ
978-1857449976:ISBN
آنچه در این مجموعه خواهید آموخت:
Want to improve at chess? Then you'll need to improve your understanding of chess strategy. You probably knew that already - but how to begin to study such a vast and seemingly complex subject? International Master Adam Hunt is a full-time chess teacher and is thus very familiar with this problem. His solution is to present an accessible and easy-to-read guide for club players and juniors. Hunt studies all the key components of chess strategy, including development, king safety, attack and defence, initiative, pawn play and much more. He examines not only grandmaster games but also those played by students, demonstrates model strategic play, identifies typical mistakes and explains how to avoid them. Move by Move provides an ideal platform to study chess. By continually challenging the reader to answer probing questions throughout the book, the Move by Move format greatly encourages the learning and practising of vital skills just as much as the traditional assimilation of knowledge. Carefully selected questions and answers are designed to keep you actively involved and allow you to monitor your progress as you learn. This is an excellent way to improve your chess skills and knowledge. *An essential guide to chess strategy *Important ideas absorbed by continued practice *Uses an ideal approach to chess study
کتاب حرکت به حرکت با فیشر
توسط کوروش لاک داوالا
فرمت: pdf - cbv - pgn
تعداد صفحات: 384
ناشر:(Everyman Chess (January 7, 2016
اورجینال با قابلیت چاپ وکپی
978-1781942727:ISBN
برای استفاده در اندروید و کامپیوتر
Bobby Fischer is a legendary chess figure, and many consider him to be the greatest chess player of all time. Fischer was a child prodigy who later developed into a phenomenal force. During his peak years he dominated his nearest rivals in a manner that had previously never been seen. Fischer achieved his goal of becoming World Champion after beating Boris Spassky in their 'Match of the Century' in 1972, an epic contest which did more than anything else to popularize the game throughout the world.
In this book, former American Open Champion Cyrus Lakdawala studies his favorite Fischer games. Lakdawala examines Fischer's renowned skills in attack, defense, counterattack, exploiting imbalances, dynamic elements, accumulating advantages and endgame play.
Move by Move provides an ideal platform to study chess. By continually challenging the reader to answer probing questions throughout the book, the Move by Move format greatly encourages the learning and practicing of vital skills just as much as the traditional assimilation of knowledge. Carefully selected questions and answers are designed to keep you actively involved and allow you to monitor your progress as you learn. This is an excellent way to improve your chess skills and knowledge.
نویسنده:Cyrus Lakdawala
فرمت : pdf
نسخه اورجینال
تعداد صفحات 380
انتشارات
This series provides an ideal platform to study chess openings. By continually challenging the reader to answer probing questions throughout the book, the Move by Move format greatly encourages the learning and practising of vital skills just as much as the traditional assimilation of opening knowledge. Carefully selected questions and answers are designed to keep you actively involved and allow you to monitor your progress as you learn. This is an excellent way to study any chess opening and at the same time improve your general chess skills and knowledge.
1...b6 is a dynamic defence which allows Black to steer the game into relatively unchartered territory, where White players are unable to relax and rely on their 'opening book' knowledge. A major attraction of 1...b6 is that it can be employed against all of White's mainline openings, including 1 e4, 1 d4, 1 Nf3 and 1 c4. In this book, International Master Cyrus Lakdawala examines all the important variations after 1...b6. Using illustrative games, he explains the main positional and tactical ideas for both sides, provides answers to all the key questions and tells you everything you need to know about successfully playing 1...b6.