长三角地区液化天然气接收站的发展前景

为了剖析长三角地区液化天然气(LNG)市场发展形势,从而为长三角地区科学布局LNG接收站提供参考,开展长三角地区天然气消费现状及发展趋势分析,梳理影响天然气市场发展的因素,对长三角地区天然气需求量进行预测。通过供需能力平衡分析,判定长三角地区LNG接收站承担的进口LNG接卸量还有较大的增长空间,未来2~3年将是LNG接收站的建设热潮。基于未来发展形势分析,从规划布局、功能定位及市场化等方面提出促进长三角LNG接收站发展的建议。     

高速铁路路基全断面沥青混凝土防水封闭结构

提出1种高速铁路路基全断面沥青混凝土防水封闭结构,基于该结构工作状态,分析其主要功能特性,设计碾压密实高模量沥青混凝土。将全断面沥青混凝土防水封闭结构应用于工程试验段,跟踪监测其服役特性。结果表明:试验段轨道结构及路堤基床动力性能均满足规范限值要求;试验段基床含水量维持在8%~18%,受天气影响小,而邻近的纤维混凝土对照段基床含水量为10%~35%,随天气波动显著;试验段沥青混凝土的吸热作用,使得路肩处基床温度较对照段大;试验段路基竖向变形监测值较对照段稍大,但均满足限值要求;试验段沥青混凝土与底座等接触情况良好,无松散剥落等病害,仅在底座板接缝处有数条裂缝,而对照段出现较多的纵横向裂缝,严重影响其防水封闭效果;沥青混凝土修补方便,可维护性高。     

梁桥承载力及荷载试验技术研究

本文通过对某桥的荷载试验的分析，讨论了梁桥承载力评价方法，希望能够给同类桥梁提供有益帮助。     

校园文化建设创新实践与启示

高校校园文化是社会文化中最富朝气和活力,极具时代特征和文化内涵的一部分,是直接影响高校大学生成长的重要环境因素。创新是高校校园文化的灵魂,是大学精神和本质的集中体现,也是大学精神源源不竭的源泉。文章从校园精神文化创新、物质文化创新和制度文化创新三个方面介绍了南通航运职业技术学院实施校园文化建设创新的实践,并提出了校园文化建设方面的一些建议。     

DYNAMIC HUNTING EXTREMUM CONTROL METHOD BASED ON MEASURE AND ESTIMATION

Anextremumcontrolsystembasedoncommonhuntingmethods[1 ] cannotworkwellforindustrialprocesses:becauseofthesysteminertialandtimedelayinfluences,thesystemwillbecomeoscillat ing ,workinwrongstepsorwillbehuntingforalongtimefortheworking process.Thepreviousmethod[2 ] canonlyapplytothesystemthathasafastdynamicprocessoritsdynamicresponsecanbeignored .Thispaper proposedadynamichuntingmethod differencepre estimationandcomparisonmethod .Thismethodcanbeusedinsecond orderorhighordersystemswithlargetimecons…     

Design Consideration and Reconstruction Method for Double-source Double-multislice Spiral CT

To accelerate the scan speed and improve the image quality, a new type of CT configuration, "double-source double-multislice spiral CT" (DSDMS-CT), which is based on two sets of single-source multislice spiral CT was proposed with a special reconstruction algorithm. Simulation results using the fan-beam filtered backprojection algorithm with a special interpolation method were presented for both single-source multislice spiral CT and DSDMS-CT. The results of new CT model show that it scans faster than the traditional spiral CT and has a better slice sensitivity profile (SSP) with larger pitch value.     

Turbo-Coded Modulation of EVRC Speech Encoder with Unequal Error Protection for Fading Channels

The Enhanced Variable Rate Codec (EVRC) is a standard for the Speech Service Opti6n 3 for Wideband Spread Spectrum Digital System, which has been employed in both IS-95 cellular systems and ANSI J-STC-008 PCS (Personal Communications Systems). This paper investigated the combination of turbo codes with Unequal Error Protection (UEP) and 16-QAM modulation for EVRC codec of Rate 1 to get power and bandwidth efficient coding scheme. The results show that the UEP system outperforms the Equal Error Protection (EEP) one by 1.45dB at BER of 10^-5.     

A NEW SYSTEM DYNAMIC EXTREMUM SELF-SEARCHING METHOD BASED ON CORRELATION ANALYSIS

Inindustrialprocessesself searchingoptimumcontrolsystemshavebeenwidelyused ,becausetheydonotneedamathematicalmodel,whichhaveblockdiagram (seeFig .1) .Theprincipleistomakethecontrolsystemreachitsoptimumoperatingstatebycontinuousmeasuringandcontrolling.Thenec essaryconditionisthattheplantsmusthaveanex tremumcharacteristic[1 ] .Thekeyofself searchingoptimumcontrolishowtofindthesystemextremum pointautomati cally .Therearemainlytwokindsofself searchingmethods,whicharethecontinuoussearchingandthest…     

以全面预算为核心的目标管理在城市公交企业的应用

1 城市公交企业的生产特点 (1)企业产品特点.城市公交企业提供的产品是运输服务,是通过投入费用(如燃料、车辆等)实现消费者的空间位移,并不产生新的实物产品,生产和消费是同时发生的.     

关于民航应急保障预案的思考

在论述加强民航应急输送保障预案研究重要意义的基础上,阐述了民航应急输送保障的新特点,拟制民航应急输送保障预案的要求,探讨了应付突发事件民航应急输送保障预案的内容及处置办法。为保证民航在应付突发事件中顺利实施部队应急输送提供理论依据与技术支持。