无锡尚积半导体科技股份有限公司是一家专业研发、生产半导体国产自研设备的厂商，主营设备包括金属溅射沉积 (PVD)，加强型等离子化学气相沉积 (PECVD)，等离子干法刻蚀 (ETCH)三个领域，服务于为全球的功率器件 (Power Device)，微机电系统 (MEMS)、先进封装 (Advanced Packaging)、化合物半导体 (III-V)、射频 (RF)、集成电路 (IC)客户。 设备具备优异的重复性和稳定性、低故障率、长使用寿命、易操作维修。 得到客户的广泛认可。

SJI-SEMI Co.,Ltd is a China-based semiconductor equipment manufacturer specializing in metal sputtering deposition (PVD), plasma enhanced chemical vapor deposition (PECVD), plasma dry etching (ETCH) systems and serving for the Power Devices, MEMS, Advanced Packaging, III-V and RF Compound Semiconductor, and IC customers in the world.

Steel products are designed to resist a uniform dead load (UDL), a uniform live load (ULL) and a uniform total load (UTL). The uniform dead load (UDL) on the beam includes the sum of the beam self weight, the deck self weight, and any applied / superimposed dead load.

Download the SJI standard specifications, load and weight tables, and the code of standard practice for K-Series, LH-Series, DLH Series open web steel joists and joist girders and CJ-Series composite steel joists.

2012年10月17日 · 然后就是你的sum赋值是一个返回的int数了，把sum定义成int for里面一句改成 sji=1.0/sum+sji；

When open-web steel joists are specified from Steel Joist Institute (SJI) load tables, the joists are designed for the uniform loads from those same tables. The chords are designed for chord axial forces and moments and shears resulting from the uniform loads between panel points. Here are some quick design tips for various loading scenarios.

The full text of the SJI rule reads as follows: “For nominal con-centrated loads between panel points, which have been account-ed for in the specified uniform design loads, a strut to transfer the load to a panel point on the opposite chord shall not be required, provided the sum of the concentrated loads within a chord panel

Prove that if Sij = Sji and Aij = -Aji, then SijAij = 0 (sum implied). In words, the contraction of a symmetric tensor and an antisymmetric tensor vanishes. "Contraction" is a bit of jargon from tensor analysis; it simply means to sum over the repeated dummy indices.

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2014年1月1日 · Part of the book series: Studies in Systems, Decision and Control ( (SSDC,volume 8)) This chapter presents a static output feedback controller design method for nonlinear systems represented by Takagi-Sugeno (T–S) fuzzy models.