奥运会优秀游泳运动员参赛战术探析

通过对近３届奥运会游泳比赛优秀运动员参赛战术的研究后,发现奥运会游泳获奖运动员比赛时前后程百分率差距正在进一步缩小：“争权夺标”战术是优秀游泳运动员在奥运会上较普遍采用的战术;;“破纪录”战术和“后发制人”战术亦是奥运会中行之有效的战术,但对运动员的要求很高。     

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.     

Aspect-based sentiment analysis with alternating coattention networks

Aspect-based sentiment analysis aims to predict the sentiment polarities of specific targets in a given text. Recent researches show great interest in modeling the target and context with attention network to obtain more effective feature representation for sentiment classification task. However, the use of an average vector of target for computing the attention score for context is unfair. Besides, the interaction mechanism is simple thus need to be further improved. To solve the above problems, this paper first proposes a coattention mechanism which models both target-level and context-level attention alternatively so as to focus on those key words of targets to learn more effective context representation. On this basis, we implement a Coattention-LSTM network which learns nonlinear representations of context and target simultaneously and can extracts more effective sentiment feature from coattention mechanism. Further, a Coattention-MemNet network which adopts a multiple-hops coattention mechanism is proposed to improve the sentiment classification result. Finally, we propose a new location weighted function which considers the location information to enhance the performance of coattention mechanism. Extensive experiments on two public datasets demonstrate the effectiveness of all proposed methods, and our findings in the experiments provide new insight for future developments of using attention mechanism and deep neural network for aspect-based sentiment analysis.     

白花烤烟新品系大理一号(DL01)的特征特性研究

DL01是大理州烟草公司烟叶技术中心种子站于2001年在弥渡县新街镇的云烟85良种田中选育出的变异株，经培育而成的烤烟新品系，其花色纯白．与当地主栽品种K326相比，DL01的苗期生长势、抗病性、产量、产值、外观质量、上等烟比例、烘烤特性、色素含量及年度间的稳定性等9个方面，均优于K326，具有更加优良的特性，值得生产中试用．     

X波段宽带低噪声放大器设计

介绍与实现了一种X波段宽带低噪声放大器（LNA）。该放大器选用NEC公司的低噪声放大管NE3210S01（HJFET）,采用微带分支线匹配结构和两级级联的方式。利用ADS软件进行设计、优化和仿真。最后研制的放大器在10-13GHz范围内增益为（21.5±1）dB,噪声系数小于2 dB,驻波比小于1.8。     

瞿秋白旧体诗词对古典韵文接受生态之审美

瞿秋白是集革命家、理论家、宣传家、文学家、诗人于一身的我党早期卓越领导人之一。秋白的旧体诗词意蕴深厚、意境醇雅、形式多样、古色古香,别具艺术审美价值。从对传统古典韵文接受生态之视角看,其旧体诗词,包括集句诗、活剥诗、打油诗等等,既有对于古典韵文外在形式的仿拟,又有对于古典韵文内在意境的汲取,内外结合,形神兼备,“采铜于山”,“自铸伟词”,水乳交融,出神入化,从而构成了秋白旧体诗词的真、善、美与雅、婉、秀兼容并茂的艺术审美特征。秋白旧体诗词之美,主要源于家乡贤哲的熏陶、书香门第的承传、勤学苦读的磨砺及其时代风云的激荡等因素。秋白旧体诗词,无愧为中国三千年诗歌花园中的一株艳丽夺目而雅婉凄关的奇葩。     

MzLH01-12864液晶显示模块在凌阳单片机系统中的应用

介绍了一款新型的液晶显示器M zLH01-12864的功能配置、引脚功能等,并且结合凌阳单片机SPCE061A介绍了该显示器在单片机系统中的应用。     

浅谈数控车床实训中易出的问题及解决方法

本文从编程、数控系统、误操作、机床本身机械故障及坐标系五个方面分析了数控车床实训中容易出现的问题及解决方法。     

剃齿精度补偿控制

本文从分析剃齿缺陷产生的机理入手,给出补偿控制剃齿精度的原理与方法,并详细论证了该原理和方法的有效性和实用性。建立在该原理和方法基础上的剃齿精度控制装置已在试验中取得令人满意的效果。     

无线数据传输系统的设计与应用

介绍一种无线数据传输系统的设计与应用。该系统以nRF24101无线收发模块和STR89C52单片机为核心。通过软、硬件设计,充分发挥“跳频”、“学习”、“配对防锵”等先进技术,实现了无线数据信息传输的安全可靠,具有低成本、易扩展、操作简单等特点,可应用于远程无线数据传输。