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101.
102.
观音湖圣莲岛钢便桥采用贝雷式321型桁架单元,总长度(46×12m+6m+4×12m),其中50跨为上承式结构,边跨(第1跨)为下承式结构。介绍了设计荷载、设计水位的选取、便桥的结构布置及设计注意事项,提出了钢便桥使用维护措施。通载试验表明设计符合要求。实际使用表明,圣莲岛钢便桥安全可靠,加快了圣莲岛开发建设进度。 相似文献
103.
An important task of Internet congestion control is inhibiting sporadic data flow to maintain a suitable window size or route
queue length. Such a requirement is just consistent with the basic idea and function of a moving average filter. In this paper
one prior Internet congestion control model, named transmission control protocol (TCP)/random early detection (RED) stroboscopic
model, is studied, and then one new scheme is proposed to enlarge its stable domain, where a simple moving average filter
is introduced to inhibit sporadic data flow as possible. In the novel scheme the bifurcation phenomenon is postponed without
any extra controller. The effectiveness of the new scheme is verified by theoretical analyses and numerical simulations. 相似文献
104.
The synchronization of time-delayed multi-agent networks with connected and directed topology is studied. Based on the correlative
work about the agent synchronization, a modified model is presented, in which each communication receiver is distributed a
delay τ. In addition, a proportional term k is introduced to modulate the delay range and to guarantee the synchronization of each agent. Two new parameters mentioned
above are only correlative to the network topology, and a theorem about their connections is derived by both frequency domain
method and geometric method. Finally, the theoretical result is illustrated by numerical simulations.
Foundation item: the National Natural Science Foundation of China (No. 70571017) and the Research Foundation from Provincial Education Department
of Zhejiang of China (No. 20070928) 相似文献
105.
106.
<正> 患者,男,26岁.左上腹包块2月.于1987年8月20日住院.既往体健.查体:一般情况可.肝脏剑下3cm,轻压痛.脾脏上界在左锁骨中线第5肋间,下界甲乙线8cm.甲丙线12cm,质韧.B超检查:肝脾增大.胸部X线片无异常.实验室检查:血色素69g/L,红细胞2×10~4个/L,白细胞6.1×10~9个/L,中性64%.免疫功能检查无异常.骨髓呈贫血性改变.初步诊断:脾功能亢进,行脾切除术. 相似文献
107.
108.
A speaker adaptation method that combines transformation matrix linear interpolation with maximum a posteriori (MAP) was proposed. Firstly this method can keep the asymptotical characteristic of MAP. Secondly,as the method uses linear interpolation with several speaker-dependent (SD) transformation matrixes, it can fully use the prior knowledge and keep fast adaptation. The experimental results show that the combined method achieves an 8.24% word error rate reduction with only one adaptation utterance, and keeps asymptotic to the performance of SD model for large amounts of adaotation data. 相似文献
109.
110.
新近吹填淤泥具有高含水率、低渗透性等特点,且剪切强度极低。为深入研究吹填淤泥在堆场中沉积时间对剪切强度的影响,采用沉降柱模拟淤泥在堆场中的沉积过程,进行了3组不同时间的室内沉降柱沉积试验,达到设定沉积时间后用微型十字板进行不排水强度测试。实验结果表明:受沉积时间影响,在含水率相同条件下,不排水强度随沉积时间增长而增大;受初始含水率影响,不排水强度-有效应力曲线呈上凹状,与一般情况认为的线性关系不一致。 相似文献