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复杂环境下浅埋暗挖隧道穿越薄富含水层冻结温度场研究

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岩土力学 2010年第S1期31卷 388-393页

作者：袁云辉杨平江天堑南京林业大学土木工程学院南京210037 中铁隧道集团公司二处北京102200

提出了南京地铁2号线新街口-上海路隧道穿越薄富含水层冻结法止水加固方案,利用ADINA有限元软件对该浅埋暗挖隧道涌水段建立冻结温度场数值模型,分析了冻结管间距、冻结盐水温度、冻结管直径对冻结壁发展速率、冻结壁厚度、平均温度的影... 详细信息

提出了南京地铁2号线新街口-上海路隧道穿越薄富含水层冻结法止水加固方案,利用ADINA有限元软件对该浅埋暗挖隧道涌水段建立冻结温度场数值模型,分析了冻结管间距、冻结盐水温度、冻结管直径对冻结壁发展速率、冻结壁厚度、平均温度的影响,以此为基础对冻结参数开展优化设计,并获得成功应用。研究结果表明:利用人工冻结技术能够有效解决这一特殊岩土工程难题。为了在支护段获得有效地止水冻土帷幕,冻结管间距应小于等于1m;冻结工程中采取-30℃的盐水温度既能满足需冷量,又能符合经济性要求;采取大直径的冻结管对增加冻土墙厚度与降低冻土壁平均温度的影响并不显著。

关键词：隧道内人工冻结浅埋暗挖薄含水层温度场数值模拟

On Two-Tier Femtocell over Fading Environments

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Engineering（科研） 2011年第3期3卷 292-299页

作者： Joy Iong-Zong Chen Kai-Chih Chuang Ching-Chuan Chiu Deng-Jyi juang 不详

In this paper the system performance of an MC-CDMA (multi-carrier coded-division multiple-access) system operating over single-cell with two-tier femtocell environment is analyzed. Consider two-tier scenario is deployed with a macrocell site in which is being surrounded several femtocells, which are designed to serve a group of subscribers locate in a small coverage area such as small office, home office or a house. The coverage area is typically up to 100 meters in radius. Mostly, the femtocell is applied to serve indoor subscribers, thus, the Rayleigh fading is adopted to characterize the propagation channel. The technique of TH-MC- CDMA (time-hopped multi-carrier coded-division multiple-access) technique is supposed to transmit each symbol alternatively with fair time (slotting)/frequency (coding) for each user in the hotspots (the area around 0th femtocell). The intensity of signals estimated at a mobile unit located in the second tie, i.e., the femtocell coverage area, is an important issue. The contribution of the paper is mainly to evaluate the system performance with both the BER (bit error rate) and OP (outage probability) according to the most important parameters, for example, the activating user number, the hopping number provided by TH-MC-CDMA system and the subcarrier number. Furthermore, the discussion of interference avoidance is also discussed with non-analytically.

关键词： Time-Hopped CDMA (TH-CDMA) Hotspot Femtocell Macrocell MC-CDMA Rayleigh Fading

反式二羟环氧苯并芘诱导人支气管上皮细胞p53表达分析

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第二军医大学学报 2009年第11期30卷 1322-1324页

作者：张丽娟李觉同济大学医学院预防医学教研室上海200092

多环芳烃化合物(polycyclic aromatic hydrocarbons,PAHs)是全球性有机污染物,在各种环境介质如空气、水、土壤、沉积物等中都广泛存在.PAHs中有相当一部分是致癌物,其中以苯并[a]芘(benzo[a]pyrene,B[a]P)的致癌性最强.B[a]P可引起实... 详细信息

多环芳烃化合物(polycyclic aromatic hydrocarbons,PAHs)是全球性有机污染物,在各种环境介质如空气、水、土壤、沉积物等中都广泛存在.PAHs中有相当一部分是致癌物,其中以苯并[a]芘(benzo[a]pyrene,B[a]P)的致癌性最强.B[a]P可引起实验动物肺癌、皮肤癌等多种癌症.B[a]P本身无致癌活性,必须在体内活化代谢后,生成终致癌物如反式二羟环氧苯并芘(anti-benzo[a]pyrene trans-7,8-di-hydrodiol-9,10-epoxide,anti-BPDE)等才具有致癌活性.

关键词：苯并(a)芘反式二羟环氧苯并芘人支气管上皮细胞 p53

编队飞行星座相对运动的运动学描述与编队构型设计

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应用力学学报 2006年第2期23卷 280-283页

作者：张娟和兴锁李亮邓峰岩西北工业大学西安710072

分别以纬度幅角和平近点角、平纬度幅角及偏近点角为变量,推导了几种简单的编队飞行星座相对运动的运动学模型,这些模型和动力学模型(Hill方程)相一致,但更便于应用。并在此基础上,给出了当编队构型为空间圆形和星下点圆形时进行编队构... 详细信息

分别以纬度幅角和平近点角、平纬度幅角及偏近点角为变量,推导了几种简单的编队飞行星座相对运动的运动学模型,这些模型和动力学模型(Hill方程)相一致,但更便于应用。并在此基础上,给出了当编队构型为空间圆形和星下点圆形时进行编队构型设计的一种运动学方法,该方法直接给出了星座中各星的轨道根数的计算方法,实例证明该方法简单实用。

关键词：编队飞行相对运动运动学模型构型设计

Signal Frequency Estimation Based on RNN

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Signal Frequency Estimation Based on RNN

Top emission organic light emitting diodes with double metal layer anode

第32届中国控制与决策会议

作者： Bin Huang Chun-Liang Lin Weihai Chen Chia-Feng juang Xingming Wu School of Automation Science and Electrical Engineering Beihang University College of Electrical Engineering and Computer Science Chung Hsing University

Signal frequency estimation is a fundamental issue in the domain of signal *** this paper,we proposed a novel framework,named FreqEnet（Frequency estimation network）,for estimating frequency based on deep learning *** signal frequency estimation refers to as a regression issue and predict it with LTSM *** framework is exceedingly concise,consisted of only three LSTM and one fully connect layers,and the running time is less than 0.3 ms on CPU（i7-7700,3.60 GHz）.Two periodic signals are generated for training our *** addition,uniform and Gauss white noise are introduce to original signal for evaluating the robustness and generalization of the *** addition,the proposed method performs extremely excellence in processing *** if given only one periodic piece of signal,the method could predicts a precise *** experiments demonstrate that FreqEnet achieves competitive performance of estimating frequency.

关键词： RNN Signal Processing Frequency Estimation LSTM

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Top emission organic light emitting diodes with double metal...

The Eighth Chinese Optoelectronics Symposium

作者： Cheng-Ru Tsai Fuh-Shyang juang Yu-Sheng Tsai Yan-Kuin Su Institute of Electro-Optical and Materials Science National Formosa University Huwei Yunlin 632 Advanced Optoelectronic Technology Center National Cheng Kung University Tainan 701

This paper studies the optimum thicknesses of organic light emitting diode (OLED) layers by using high-reflectivity metal Al coupled with high work function alloys, e.g. AuSn, AuGe, and AuGeNi as anode (dual metal layer of Al/AuGeNi was actually used in the study to obtain better luminescence characteristics) and multilayer metal LiF/Al/Ag as cathode. In the study of optimum thickness of organic layer comprising hole injection layer, hole transport layer and electron transport layer, it is found when the organic layer of m-MTDATA 30/NPB 10/Alq3 was 100 nm, the device produced maximum luminance of 2930 cd/m2 and maximum luminance yield of 1.4 cd/A, which were significant improvement over the performance of 537 cd/m2 and 0.28 cd/A before thickness was optimized.

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第三方物流主导供应链金融的运作模式架构

江苏商论 2015年第5期 25-31页

作者：马娟南通大学商学院江苏南通226019

第三方物流企业主导供应链金融具有较强的物流、信息流、资金流整合优势和风险控制优势,能实现各参与主体的协作共赢。鉴于银行业尚未放开,我国的供应链金融实践多由金融机构主导,第三方物流企业无法自主开展供应链金融服务。借鉴UPS的... 详细信息

第三方物流企业主导供应链金融具有较强的物流、信息流、资金流整合优势和风险控制优势,能实现各参与主体的协作共赢。鉴于银行业尚未放开,我国的供应链金融实践多由金融机构主导,第三方物流企业无法自主开展供应链金融服务。借鉴UPS的实践经验,针对当前环境,构建本土第三方物流供应链金融的两种运作模式。第三方物流企业需增强自主性,强化物流优势与业务创新,主动依托商业银行主导开展非自有资金模式的第三方物流供应链金融服务。同时,积极为组建自己的金融机构做准备,加强实践探索和网络平台建设,以在不远的将来有效开展自有资金模式的第三方物流供应链金融服务。

关键词：第三方物流企业供应链金融协作共赢运作模式