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We are concerned with placing the foundation on either soil or rock. This material may be under water as for certain bridge and marine structures, but more commonly we will place the foundation on soil or rock near the ground surface. Soil, being a mass of irregular-shaped particles of var..
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摘要：本文的主要內(nèi)容是：量 化成比例的源于(1)廣泛承認記錄的變化性，(2)內(nèi)在隨機性的系統(tǒng)參數(shù)，彈性的總位移比率模式主導結(jié)構(gòu)相當名義上決定橫向強度。隨機系統(tǒng)參數(shù)處理均為：系統(tǒng)正常獨立考慮橫向屈服強度和系統(tǒng)粘性阻尼比。 Monte Carlo模擬技術(shù)是一套選自從20規(guī)模地震數(shù)據(jù)中總結(jié)出來被廣泛用來取代SDOF系統(tǒng)的數(shù)據(jù)模..
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History of Road DesignFirstly let me apologise for this page. It is largely text based due to the nature of it and if reading is difficult then I am sorry. This is due solely to the material covered and is the only page in the series. This is not typical as the rest have graphics or images to kee..
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1. Description The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer with 8K bytes of Flash programmable and erasable read only memory(PEROM). The device is manufactured using Atmel's high density nonvolatile memory technology and is compatible with the industry standard 80..
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摘要這篇文章主要講了帶有半剛性連接和半剛性柱基礎(chǔ)的鋼框架的分析和設(shè)計方法。主要分析了梁柱連接的非線性性能和梁柱構(gòu)件的P -⊿作用。Frye和Morris多項式模型是用來模擬半剛性連接的。構(gòu)件是根據(jù)美國研究所的鋼結(jié)構(gòu)建筑（AISC）容許應(yīng)力設(shè)計（ ASD ）的設(shè)計規(guī)范來設(shè)計的。設(shè)計過程是互動式的，并給了設(shè)計師選擇的機會?.
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改造中應(yīng)注意的一些技術(shù)問題 �。�1）高壓變頻調(diào)速凝結(jié)水泵運行時上水調(diào)整門打開，利用改變凝結(jié)水泵的轉(zhuǎn)速調(diào)節(jié)除氧器水位造成凝結(jié)水壓力較低，最大不超過2.8MPa。運行中凝結(jié)水壓力隨負荷降低而下降，為了保證其它設(shè)備所需凝結(jié)水的壓力，所以凝結(jié)水母管壓力低聯(lián)鎖值應(yīng)重新整定，但不能太低。例如設(shè)定變頻調(diào)速系統(tǒng)的最低..
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大學生在Facebook上的網(wǎng)絡(luò)社交研究1. Introduction 引言Media use provides an important backdrop for the social, emotional, and cognitive development of youth, accounting for a large portion of their time (Roberts, Foehr, & Rideout, 2005). One type of online application that has grown rapidly in pr..
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摘要：這章介紹創(chuàng)意產(chǎn)業(yè)中文化、經(jīng)濟與政策之間的關(guān)系（就本文的目的，假設(shè)等同于文化產(chǎn)業(yè)），以及他們在亞洲的表現(xiàn)。尋址這三個問題中的任何一個本身就是一個挑戰(zhàn)，但三個問題一起處理更是復(fù)雜。之前的“創(chuàng)意經(jīng)濟”學者就發(fā)現(xiàn)它的工作不同于傳統(tǒng)經(jīng)濟。研究文化是了解創(chuàng)意產(chǎn)業(yè)發(fā)展相當重要的途徑，但是文化如何形成國家..
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The city has been compared to a poem, a sculpture, a machine. But the city is more than a text,and more than an artistic or technological. It is a place where natural forces pulse and millions of people live—thinking,feeling,dreaming,doing. An aesthetic of urban design must therefore be rooted i..
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