PIC单片机扩展大容量数据存储器KM29N16000TS

PIC1 6F877可采用 MSSP模块的 SPI方式扩展大容量数据存储器 ,74HC1 65和 74HC5 95分别实现串 -并和并 -串转换以模拟片外数据总线 ,而 RB口用于产生控制读写的信号线 ,KM2 9N1 60 0 0 TS的 8位信号传送方式为数据线与地址线的连接提供了更简单的实现方式     

英语阅读中的非语言因素

英语阅读是学习英语的重要手段之一,如何提高英语阅读能力,是广大英语学习者关心的问题。阅读的进行不仅受到读者的社会阅历和知识结构的影响,还要受到非语言因素的作用。诸如:阅读心理准备、阅读预测的应用、以及阅读习惯的培养等。     

我国优秀男子散打运动员"运动寿命"的影响因素

竞技体育的最终目的就是最大限度地发挥运动员的最佳竞技状态,并尽可能长时间地保持良好的竞技状态,创造更多的优异成绩,从而达到竞技体育训练的经济性和时效性。文章运用文献资料、专家访问等研究方法对我国优秀散打男子运动员进行研究与分析,指出影响男子散打运动员运动寿命的训练因素和非训练因素及其相关对策。     

对优秀男子篮球运动员运动寿命的研究

优秀男子篮球运动员的运动寿命在此特指运动员竞技能力达到高水平以后 ,正常情况下持续到不能再适应其原来参加的高水平重大比赛而退役的一段时间。这段时间的长短受到多方面因素的制约和影响 ,是一个复杂的问题。本文通过对不同时期中外优秀男子篮球运动员年龄的统计发现 :他们的年龄普遍有增长的趋势 ;他们的运动寿命普遍有延长的趋势。我们应该重新认识和划分优秀男子篮球运动员的年龄阶段 ,在注重培养新秀的同时 ,也要充分发挥“老将”的作用。     

独塔悬索轿主梁施工技术

混凝土锚跨及混凝土加劲梁施工技术在独塔悬索桥主梁施工中受到了很高的重视,需要技术人员预先制定严谨的施工方案,多方面了解现场实际情况,遇到问题及时处理。本文主要介绍混凝土锚跨及混凝土加劲梁施工技术,简要地介绍钢加劲梁施工技术。     

箱式电阻炉炉顶增设电阻丝的研究

箱式电阻炉炉顶通常不配置电阻丝.选取在不改变箱式电阻炉功率、炉体材料、炉体尺寸、工件工艺温度的条件下,研究和设计减少箱式电阻炉两侧功率并将减少的功率布置到炉顶上.可达到提高电阻丝寿命,减少工件过热倾向,节电等效果.     

Tumor necrosis factor alpha (TNF-α) and estrogen hormone in osteoarthritic female patients

Osteoarthritis of knee joints is a disease of old age in both sex. It is very common after the age of 40 years in elderly females or in postmenopausal phase of females. It is characterized by narrowing of space in joints due to inflammation. The exact mechanism of inflammation in this disease is not yet clear. Tumor necrosis factor alpha (TNF-α) may involve in onset of disease. The present study is being carried out in 130 female subject of age group 40–60 years suffering from osteoarthritis of knee joints and 50 normal healthy control female subjects. A correlation is made between TNF-α and estrogen and found significant inverse correlation (r<0.001), between TNF-α and estrogen hormone in osteoarthritic female patients as compared to normal healthy control female group.     

Is disfluency desirable for learning?

While some difficult learning conditions can improve learning, the findings regarding the contribution to learning of disfluent, hard-to-read text materials have been inconsistent. We identified test delay and disfluency manipulations as factors potentially contributing to these discrepancies. We tested students' immediate and delayed memory performance (2 weeks later) on a course text that was presented between-subjects (N = 134) either as perceptually disfluent with a hard-to-read-font, as lexically disfluent with 20% scrambled letters, or in its original format. By distinguishing between short-term and long-term learning, our expectations were supported; an illegible font reduced forgetting, thereby producing delayed memory benefits. We also tested whether lexical disfluency would have similar memory effects as perceptual disfluency, as the meta-cognitive perspective suggests, or whether different disfluency manipulations would have different memory effects, as ideas from a contextualized framework on desirable difficulties suggests. The findings supported the latter. The results are discussed regarding the generalizability of the disfluency effects and the implications for when disfluency is desirable.     

Time span of news coverage as an antecedent of perceptual and behavioral components of third-person effect

This study extends the research of the third-person effect by examining the effect of time span of media message on perceptual and behavioral components of the third-person effect. Using a survey of Hong Kong residents, the study explores perceived media effect of the news coverage of a short- and a long-term issue and the predictor of intention to take action to reduce negative effect. The results revealed no third-person effect by the short-term messages and the reverse third-person effect (first-person effect) by the long-term messages. There was a significant difference in discrepancy between the perceived media effect on self and others (third-person perception) produced by the messages of the short- and long-term issue. The study also found that perceived media effect on self is a stronger predictor of intention to take action to reduce the negative effects of the short- and long-term issue than the third-person effect.     

一种基于卷积神经网络和双向长短记忆神经网络的在线医疗社区问答文本实体识别方法

[目的/意义]针对在线医疗社区问答文本复杂程度高、结构化程度低的特点,结合卷积神经网络（CNN）和双向长短记忆神经网络（BiLSTM）两种深度学习模型以及条件随机场（CRF）模型,提出一套适用于在线医疗问答文本的实体识别方法并进行验证。 [过程/方法] 将问答文本进行清洗和BIO标注后,分别用CNN和BiLSTM进行字级别的特征抽取,将两种模型抽取到的特征进行融合,后放入CRF中训练出实体预测模型,再将问答文本放入训练好的模型中得到最终的实体识别结果。[结果/结论]在所选取的乳腺癌医疗社区问答文本数据集上,所提出的方法结果优于其他模型,且识别准确率达到92.3%,召回率达到89.3%,F值达到90.8%。