圆弧插补在数控孔加工中的应用

在数控铣削加工的操作与编程过程中，为了很好地理解数控加工和编程原理，合理选择加工工艺以及提高数控设备的使用率和刀具的使用寿命，在加工过程中有很重要的意义。     

由生成语法中心语移位引发的研究

从生成语法的角度探讨了中心语移位现象．认为汉语“动词＋起＋宾语＋来”的结构用中心语移位来解释比宾语插入解释更为合理。     

本质集的邻域并和无爪图的哈密尔顿性

设G是一个图 ,G的独立集Y称为本质集 ,如果存在 {y1,y2 } Y ,使得dist(y1,y2 ) =2 .本文利用插点方法 ,给出了关于k或 (k + 1)连通 (k≥ 2 )无爪图G是哈密尔顿的或 1哈密尔顿的统一的证明 .2个结果的充分条件是关于 ∑ki=0N(Yi) 与n(Y)的不等式 ,这里Y是图G的任一本质集 ,对于i∈ { 0 ,1,… ,k} ,Yi={y1,yi- 1,… ,yi- (b- 1) } Y(yj 的下标将取模k + 1) ;b是一个整数 ,且 0 相似文献   

可逆锂离子电池新型阴极材料锂钒氧化物的研究现状

介绍了混合导体钒青铜LiV3O8的CH3OH的溶胶凝胶、高温沉淀、低温沉淀等一般制备方法 ,在不同条件下 (化学 ,电化学方法 )制备的插入化合物Li1 xV3O8的插入、抽出反应 ,及其掺杂锂钒氧化物的电化学特性研究现状     

网络环境下投稿时参考文献应插入超链接

参考文献超链接使得文献查阅十分便捷。网络环境下投稿时参考文献应插入超链接,以方便审编环节的查阅,缩短审稿周期。要精挑细选那些全文易得而又稳定可靠的URL地址作为超链接插入。     

Reliable automatic word spacing using a space insertion and correction model based on neural networks in Korean

Automatic word spacing in Korean remains a significant task in natural language processing owing to the extremely complex word spacing rules involved. Most previous models remove all spaces in input sentences and insert new spaces in the modified input sentences. If input sentences include only a small number of spacing errors, the previous models often return sentences with even more spacing errors than the input sentences because they remove the correct spaces that were typed intentionally by the users. To reduce this problem, we propose an automatic word spacing model based on a neural network that effectively uses word spacing information from input sentences. The proposed model comprises a space insertion layer and a spacing-error correction layer. Using an approach similar to previous models, the space insertion layer inserts word spaces into input sentences from which all spaces have been removed. The spacing error correction layer post-corrects the spacing errors of the space insertion model using word spacing typed by users. Because the two layers are tightly connected in the proposed model, the backpropagation flows are not blocked. As a result, the space insertion and error correction are performed simultaneously. In experiments, the proposed model outperformed all compared models on all measures on the same test data. In addition, it exhibited reliable performance (word-unit F1-measures of 94.17%～97.87%) regardless of how many word spacing errors were present in the input sentences.     

插入的退让:从遗情/书到遗性/书——论木子美《遗情书》中的性爱关切

如果将木子美放到力比多实践的谱系学上来,她上承卫慧,下启竹影青瞳等现象,是不容忽视的一环.若以插入关键词为核心,其实仍可读出木子美叛逆背后的内在虚弱和吊诡,她其实不是斗士,不是女性主义者,而更多是践行男权主义的"性女".更进一步说,其插入姿态更反衬出一种内在的避让/退缩.     

Construction of recombinant industrial Saccharomyces cerevisiae strain with bglS gene insertion into PEP4 locus by homologous recombination

The bglS gene encoding endo-1,3-1,4-β-glucanase from Bacillus subtilis was cloned and sequenced in this study. The bglS expression cassette, including PGK1 promoter, bglS gene fused to the signal sequence of the yeast mating pheromone α-factor (MFals), and ADH1 terminator with G418-resistance as the selected marker, was constructed. Then one of the PEP4 allele of Saccharomyces cerevisiae WZ65 strain was replaced by bglS expression cassette using chromosomal integration of polymerase chain reaction (PCR)-mediated homologous recombination, and the bglS gene was expressed simultaneously. The recombinant strain S. cerevisiae (SC-βG) was preliminarily screened by the clearing hydrolysis zone formed after the barley β-glucan was hydrolyzed in the plate and no proteinase A (PrA) activity was measured in fermenting liquor. The results of PCR analysis ofgenome DNA showed that one of the PEP4 allele had been replaced and bglS gene had been inserted into the locus of PEP4 gene in recombinant strains. Different endo-1,3-1,4-β-glucanase assay methods showed that the recombinant strain SC-βG had high endo-1,3-1,4-β-glucanase expression level with the maximum of 69.3 U/(h-ml) after 60 h of incubation. Meanwhile, the Congo Red method was suitable for the determination of endo-1,3-1,4-β-glucanase activity during the actual brewing process. The current research implies that the constructed yeast strain could be utilized to improve the industrial brewing property of beer.     

采用RF CMOS T型衰减器的TH-UWB通信调制器(英文)

对T 型衰减器的插入损耗和衰减性能进行了理论分析, 在此基础上设计了一个用于跳时超宽带(TH-UWB)通信的载波频率为4 GHz 的通断键控(OOK)调制器. 该调制器的核心是一个T 型RF CMOS 衰减器, 其电路拓扑结构包括3个主要部分: 振荡频率为4 GHz 的振荡器、由射频CMOS 晶体管构成的T 型衰减器和带有L 型结构的输出阻抗匹配网络. 该调制器由一个脉位调制(PPM)信号控制, 使已调信号的包络随控制信号的幅度而变化, 以实现调制功能. 除此之外, 输出匹配网络将调制器的输出阻抗匹配到50Ω负载. 调制器采用0.18 μm 射频CMOS 工艺进行设计并仿真, 其芯片经过测试, 在1.8 V 电源和50Ω负载下有65 mV 的输出幅度, 输出端回波损耗(S11)小于-10 dB, 功耗为12.3 mW, 芯片尺寸为0.7 mm×0.8 mm.     

试论思想政治工作中的情感投入

情感投入对思想政治工作主体与客体之间的信息具有传递作用;对客体接受思想教育的状态具有调节作用;对客体的行为具有驱动作用;对客体的内心具有直接的感化和陶冶作用;对客体新思想的确立具有巩固和稳定作用.为此,思想政治工作主体应遵循相关的原则方法,以情动人,以情感人,从而实现思想政治工作的要求和目标.