روش نوین تدریس امریکایی و اروپایی (کاهوت)------------Kahoot is the advanced methods of American education

اختصاصی از فی گوو روش نوین تدریس امریکایی و اروپایی (کاهوت)------------Kahoot is the advanced methods of American education دانلود با لینک مستقیم و پر سرعت .

Kahoot is the advanced methods of American education

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روش نوین تدریس امریکایی و اروپایی 2016

پلاسمافرزیس: اصول، روش ها و کاربرد بالینی Plasmapheresis: Principles, Methods & Clinical Use

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پلاسمافرزیس: اصول، روش ها و کاربرد بالینی

کتابی کامل و کاربردی

1. نشر:تهران : زهد؛ سازمان انتقال خون ایران، مرکز تحقیقات، 1387.
2. توصیف ظاهری:183 ص.: مصور، جدول
3. شابک:8-17-2740-964-978

BS 7910:2013- Guide to methods for assessing the acceptability of flaws in metallic structures

اختصاصی از فی گوو BS 7910:2013- Guide to methods for assessing the acceptability of flaws in metallic structures دانلود با لینک مستقیم و پر سرعت .

BS 7910:2013- Guide to methods for assessing the acceptability of flaws in metallic structures

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فهرست مطالب

Contents
Foreword viii
Introduction 1
1 Scope 4
2 Normative references 4
3 Symbols and definitions 5
4 Types of flaw 14
5 General guidance on assessment 15
6 Information required for assessment 17
7 Assessment for fracture resistance 25
8 Assessment for fatigue 60
9 Assessment of flaws under creep and creep/fatigue conditions 98
10 Assessment for other modes of failure 122
Annexes
Annex A (normative) Evaluation under mode I, II and III loads 129
Annex B (informative) Assessment procedures for tubular joints in offshore
structures 134
Annex C (informative) Fracture assessment procedures for pressure vessels and
pipelines 141
Annex D (normative) Stress due to misalignment 145
Annex E (normative) Flaw recharacterization 151
Annex F (normative) Procedures for Leak-before-Break assessment 152
Annex G (normative) The assessment of locally thinned areas (LTAs) 177
Annex H (normative) Reporting of fracture, fatigue or creep assessments 189
Annex I (informative) The significance of strength mis-match on the fracture
behaviour of welded joints 192
Annex J (informative) Use of Charpy V-notch impact tests to estimate fracture
toughness 200
Annex K (informative) Probabilistic assessment 205
Annex L (informative) Fracture toughness determination for welds 220
Annex M (normative) Stress intensity factor solutions 230
Annex N (informative) Allowance for constraint effects 285
Annex O (informative) Consideration of proof testing and warm prestressing 323
Annex P (normative) Compendium of reference stress and limit load solutions for
homogeneous and strength mis‑matched structures 330
Annex Q (normative) Residual stress distributions in as-welded joints 373
Annex R (normative) Determination of plasticity interaction effects with
combined primary and secondary loading 394
Annex S (normative) Information for making high temperature crack growth
assessments 399
Annex T (informative) Guidance on the use of NDT with ECA 412
Annex U (informative) Worked examples in fatigue assessment using the quality
category approach 429
Bibliography 436

دانلود مقاله انگلیسی Topology Optimization, Theory, Methods and Applications in Architecture

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دانلود مقاله انگلیسی Topology Optimization, Theory, Methods and Applications in Architecture

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The human desire for accomplishment, demonstrates the optimization theory. Human wants to visualize and describe the best and achieve it. Optimization theory contains quantitative studies of optimal and methods to find them. An optimization problem consists of maximizing or minimizing a real function by systematically choosing input values from within an allowed set and computing the value of the function. Topology optimization is a mathematical approach that optimizes material layout within a given design space, for a given set of loads and boundary conditions such that the resulting layout meets a prescribed set of performance targets. Using topology optimization, engineers can find the best concept design that meets the design requirements.

The nature learns us by evolution strategies in millions of years to use resources efficiently and to find the optimal shape. These organic forms determine structure of creatures. In years away some of designers and architectures had used natural forms in designing and manufacturing structures but these organic forms originated from those designers ingenuity. Now designers have tools to do this process for them. Use of topology optimization in the new design process leads in average to following result:  30% Less Mass, 30% Better Performance and 50% Cost Savings. The goal of topological optimization is finding the optimal lay-out in specified area and it carried out in three stages; selecting the design space, topology optimization and design of structural form. Using this tool is not only structurally considered, but optimized form achieves certain aspects of the aesthetics. Topology optimization has considerable potential in architectural design as the guide of creativity and the convergent principles of architecture and engineering. In this study we peruse the theory and method of topology optimization and its applications and its effects on existing samples by using correlate softwares.

Case Studies on New Methods of Technology Transfer and Development

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مقاله SPE 71122