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means的相关文献在1984年到2023年内共计39138274篇,主要集中在数学、自动化技术、计算机技术、经济计划与管理 等领域,其中期刊论文78篇、专利文献39138196篇;相关期刊63种,包括法音、考试与评价、疯狂英语:中学版等; means的相关文献由50000位作者贡献,包括不公告发明人、王伟、张伟等。

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论文:78 占比:0.00%

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论文:39138196 占比:100.00%

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means

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  • 王伟
  • 张伟
  • 王磊
  • 李伟
  • 张磊
  • 刘伟
  • 王勇
  • 张涛
  • 李强
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    • 刘兴建; 原振文
    • 摘要: 针对现有滚轴故障预测方法预测精度差、效率低的不足,提出一种基于Aco-k means算法的滚轴故障预测方法.在Spark平台环境下,利用小波包变换提取滚轴故障信号的时频域特征,并对滚动轴承故障特征进行聚类分析;引入Aco仿生算法确定故障特征数据聚类中心及故障样本数据间的欧氏距离,在全局范围内寻优并确定滚轴故障的类别与严重程度.仿真结果证明,该方法在滚轴故障预测精度方面具有明显优势,其故障特征提取效率也高于传统算法.
    • 高洁
    • 摘要: “A Bite of China” is a series 1)documentary on CCTV (China Central Television), but it is not really 1 There are no recipes, no advice to home cooks on how to cook this or that. 2 it focuses on the culinary 2)heritage of China: how food was and still is grown, how it is prepared, and what it means to people. It is a very 3)earnest show.
    • T. Velmurugan; E. Venkatesan
    • 摘要: A number of clustering algorithms were used to analyze many databases in the field of image clustering. The main objective of this research work was to perform a comparative analysis of the two of the existing partitions based clustering algorithms and a hybrid clustering algorithm. The results verification done by using classification algorithms via its accuracy. The perfor-mance of clustering and classification algorithms were carried out in this work based on the tumor identification, cluster quality and other parameters like run time and volume complexity. Some of the well known classification algorithms were used to find the accuracy of produced results of the clustering algorithms. The performance of the clustering algorithms proved mean-ingful in many domains, particularly k-Means, FCM. In addition, the proposed multifarious clustering technique has revealed their efficiency in terms of performance in predicting tumor affected regions in mammogram images. The color images are converted in to gray scale images and then it is processed. Finally, it is identified the best method for the analysis of finding tumor in breast images. This research would be immensely useful to physicians and radiologist to identify cancer affected area in the breast.
    • Anshul Srivastava; V. K. Singh
    • 摘要: Inverse and saturation theorems have been studied for linear combination of some summation integral hybrid linear positive operators. Linear approximating technique and Steklov means have been used to obtain better approximation results.
    • Mónica B. Collado; Mónica B. Aulicino; Miguel J. Arturi; María del C. Molina
    • 摘要: This study details the nature and magnitude of the genetic effects associated with various quantitative characters (morphological and hydric relations) measured in maize seedlings during the osmotic phase of saline stress (100 mM NaCl). Three lines with differential behavior in salt stress: SC2 (tolerant), AFE (susceptible) and LP3 (moderately tolerant) were used to obtain contrasting crosses (SC2 × AFE) and (SC2 × LP3). An analysis of six generational means (P1, P2, F1, F2, BC1 and BC2) was applied for each cross. First a scaling test was applied and then a three and six-parameter genetic models were used to estimate various genetic components. In none of the traits studied there was evidence of adequacy to the three parameter model, which indicates important epistatic effects in genetic expression. The dominant genetic effects were greater than the additive ones for all the characters evaluated. LG showed positive and significant differences for [h] in both crosses, indicating the presence of hybrid vigor and its possible use in the improvement. Low value of [d] and high of [h] both significant in SC2 × AFE, indicates existence of genes dispersion between the parental lines. While, for the cross SC2 × LP3, the low and significant value of [d] and not significant value of [h], indicate greater genetic similarity. In the SC2 × LP3 cross, the negative interaction [l] confirms ambidirectional dominance, while for SC2 × LP3 the positive sign indicates directional dominance. The analysis of tolerance to salinity in the osmotic phase showed a complex polygenic inheritance for the traits used, determined by simple and interaction effects of different magnitudes and significance according to the cross considered.
    • 钱弘扬1
    • 摘要: Ⅰ.Introduction:Cognitive linguistics is a linguistic model developed by Ronald W.Langacker.Its main goal is to express the semiotic function of language,namely to allow the symbolization of conceptualization by means of phonological sequences.It is subjective,anthropocentric and reflects dominant cultural concerns and culture-specific models of interaction,as well as features of the world as such.The study of metaphorical expressions has played a central role in the development of Cognitive Linguistics.Since Aristotle,metaphor has been constantly analyzed.Different from the previous study,the cognitive linguistists assume that metaphor means“a crossdomain mapping”in the conceptual system(Lan Chun;2003).The cognitive approach reveals the mechanism of metaphor more efficiently and this paper will adopt the cognitive approach.
    • 摘要: 1.物Wu(Thing/Matter)“物”一般指天地之间有形有象的一切存在,大体有三种不同含义:其一,指有形的具体存在物,包括各种自然物、人造物,也包括各种生物和人。其二,指人伦关系中发生的事务、事情,如侍奉父母、为政治国等,这个意义上的“物”相当于“事”。其三,指具体存在物或人伦事务的总和,通常称“万物”。Wu(物)usually denotes an existence in the universe that has a form or an image.In general,the word has three different meanings.First,it refers to any concrete existence,encompassing all natural and man-made objects,all organisms and human beings.Second,it covers interpersonal matters and activities such as taking care of one s parents,entering politics,or managing state affairs.In this sense,wu means“matter.”Third,the word sums up all existing physical and social matters,generally called“everything.”
    • 董漫远1
    • 摘要: Since the United States and then Russia both got involved in the Syrian situation in the name of“anti-terrorism,”the fate of Syria has been dominated by great-power rivalry.The US and Russia have basically established their respective spheres of influence after several rounds of complicated competition,but this is by no means the two powers’ultimate objective in Syria.In general,the power plays between the two countries in Syria are linked to their competition in Eurasia and to their intervention in other hotspot issues of the Middle East.As the US-Russia competition plays a leading role in the trajectory of the Syrian and the broader Middle East situation,geopolitical confrontation between regional powers,especially that between Saudi Arabia and Iran,has been subordinate to and become part of the US-Russia rivalry.
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