Automatic Construction of Chinese FrameNet Based on FrameNet

语义知识库是自然语言处理的基础性工程,但现阶段语义知识库的构建,大部分工作基于人工。基于英语框架网络frAMEnET,采用frAMEnET的现有框架库作为汉语框架网络的框架库,通过frAMEnET中现有标注英文例句训练一语义角色标注器,利用英汉双语平行语料,对英文语料进行语义角色标注并将其映射到中文句子上,从标注好的汉语句子中提取汉语词元和例句填充汉语框架,构建汉语词汇库和例句库,从而实现汉语语义框架网络的自动构造。Semantic knowledge library is a basic resource of natural language processing,but so far the most work of building the semantic knowledge library is based on artificial operations,it is labor intensive and time consuming.Describes a method to construct the Chinese FrameNet automatically,based on Framenet,uses the existing frames of FrameNet as the frames of Chinese FrameNet,extracts Chinese lexical units and sample sentences from English-Chinese bilingual parallel corpus to fullfill the Chinese frames,builds Chinese vocabulary database and Chinese sample sentences database,so as to construct the Chinese FrameNet automatically.国家自然科学基金(No60573189);863项目(No2006AA010107;2006AA010108);福建省重点科技项目(No2006H0038);福建省基金项目(No2006J0043

谷氨酸发酵废水电渗析脱盐

采用普通电渗析脱除谷氨酸发酵废水中的无机盐,用活性炭对废水进行预处理,考察了预处理前后废水的电渗析性能.结果表明,活性炭用量为100和200g/L时,在60℃下处理30min,废水的脱色率分别达61%和75%.预处理前及100和200g/L活性炭预处理后乳酸迁移量依次降低,谷氨酸迁移率分别为24%,35%和39%,SO42迁移率分别为77%,80%和84%,NH4+迁移率分别为89%,86%和84%,膜堆电阻依次增加,SO42脱除率达85%时,能耗分别为4.88,3.93和3.64kWh'/kg

谷氨酸发酵废水电渗析脱盐

采用普通电渗析脱除谷氨酸发酵废水中的无机盐,用活性炭对废水进行预处理,考察了预处理前后废水的电渗析性能.结果表明,活性炭用量为100和200g/L时,在60℃下处理30min,废水的脱色率分别达61%和75%.预处理前及100和200g/L活性炭预处理后乳酸迁移量依次降低,谷氨酸迁移率分别为24%,35%和39%,SO42迁移率分别为77%,80%和84%,NH4+迁移率分别为89%,86%和84%,膜堆电阻依次增加,SO42脱除率达85%时,能耗分别为4.88,3.93和3.64kWh'/kg

谷氨酸发酵废水电渗析脱盐

采用普通电渗析脱除谷氨酸发酵废水中的无机盐,用活性炭对废水进行预处理,考察了预处理前后废水的电渗析性能.结果表明,活性炭用量为100和200g/L时,在60℃下处理30min,废水的脱色率分别达61%和75%.预处理前及100和200g/L活性炭预处理后乳酸迁移量依次降低,谷氨酸迁移率分别为24%,35%和39%,SO42迁移率分别为77%,80%和84%,NH4+迁移率分别为89%,86%和84%,膜堆电阻依次增加,SO42脱除率达85%时,能耗分别为4.88,3.93和3.64kWh'/kg

Design and Optimization of 4H-SiC Based and LC Resonant Wireless Passive Pressure Sensitive Chips for Harsh Environment Applications

针对航空发动机、重型燃气轮机等动力设备燃烧室内压力原位测量的需求,设计了一种基于4H-SiC的LC谐振式无线高温压力敏感芯片.以现有SiC微工艺; 水平为基础,利用TCAD软件及多物理场耦合仿真软件,完成了敏感芯片电容、电感、感压膜等主要部件的结构设计、优化,以提高敏感芯片的Q值及耦合强度.; 探讨了电感内置、外置两种设计方案本体电容的大小,并在此基础上提出一种双腔体结构,将本体电容值减小到179. 66; pF.优化后的敏感芯片常温(20 ℃)Q值约为13. 66,100 kPa满量谐振频率变化158. 62 kHz; 1 000 ℃下的Q值为3.; 65,满量变化55. 53 kHz,且1 000; ℃下的热应力较小.这种敏感芯片将可应用于高温压力传感器的制备,为我国自主研制航空发动机、高超发动机、重型燃气轮机等先进动力系统提供支撑.To meet the demand of the in-situ pressure measurement in combustion; chambers of heavy gas turbines and aero-engine,4H-SiC based and LC; resonant wireless passive pressure sensitive chips were designed. To; improve the Q value and couple coefficient,geometric parameters of chips; primary structures, such as the capacitance,inductance,vacuum cavity and; diaphragm,were optimized by numerical analysis with TCAD and; multi-physic field coupled-simulation softwares. Inductors relative; position,out of or inside the vacuum cavity was discussed,based on which; a dual-cavity chip design was proposed,reducing the bulk capacitance to; 179. 66 pF. Q value of sensitve chips fabricated with optimized; structure paramters was 13. 66 and 3. 65 at 20 ℃ and 1 000; ℃,respectively. The variation of the resonance frequency under full; scale 100 kPa was 158. 62 kHz at 20 ℃,which reduced to 55. 53 kHz when; the temperature rose to 1 000 ℃. These optimized chips could be applied; to prepare pressure sensors for harsh environment applications,which; would support the independent development of aero-engines,hypersonic; engines and heavy gas turbines.总装预先研究资助项

60 年来黄河河龙区间水沙变化特征及人类活动影响评价

采用线性分析、多年滑动平均、Mann-Kendall 趋势检验等方法对黄河中游河龙区间1950 － 2012 年的水 沙变化特点和趋势进行了分析。结果表明: 河龙区间年际水沙变化整体呈现递减趋势，且阶段性变化趋势差 异较大; 径流量和输沙量在年内分配不均，水文站径流量和输沙量主要集中在汛期; 河龙区间年均输沙量分别 在1979 年和2000 年存在两个显著突变点。应用距平累积曲线分析表明， 1974 年后人类活动对输沙的影响显 著增强， 1975 － 2012 年人类活动总减沙量为179. 75 亿t，年均减沙量4. 73 亿t。研究结果可为流域生态和水 利设施建设提供基础理论依据。</p