找到约10000个结果。
英语原文共 12 页, 基于EEG信号和梯度增强检测癫痫发作 引言 诊断癫痫发作最常用的方法之一是通过进行无创脑电图(EEG)来测量大脑皮层的电活动,相较于其他技术如MRI或侵入性方法,这是一种相对便宜和简单的方法。因此,大多数自动分析癫痫发作的工作都是通过时间序列处理方法在这些信号上完成的。 基于脑电图的癫痫发作检测已得到广泛研究;然而,它很少达到能够全面地帮助神经学家建立人脑信号模型的效果。主要有以下因素:首先,脑电图信号是非平稳的,随着时间的推移,这些信号的统计特征在患者之间是不同的。第二个因素是用于机器学习的数据集质量有限。 理想的数据集需要能很好地表示癫痫发作期间可能出现的各种脑电图信号。即使使用一些公开可用的数据集获得了高性能,它们通常也
英语原文共 9 页, 实现对纳米fe3o4 /石蜡包覆的自愈胶凝材料异氰酸酯微胶囊的制备与表征 制备了一种新型电磁可控破裂微胶囊。通过调节微胶囊的用量,提高了砂浆的自愈能力。含有微胶囊的砂浆具有超强的自愈能力 砂浆微胶囊自愈纳米fe3o4电磁场 本文采用熔融缩合法制备了一种具有超高自愈能力的电磁可控破裂微胶囊(ECRM),其外壳为纳米fe3o4和石蜡,核为甲苯-二异氰酸酯(TDI)。研究了石蜡/TDI质量比对ECRM岩心分数的影响。采用冷场发射扫描电子显微镜(CFESEM)、激光粒度分析仪和傅里叶变换红外光谱仪(FTIR)分别对ECRM的形貌、粒度分布和组分鉴定进行了表征。随后,研究了ECRM对砂浆力学性能和自愈能力的影响。结果表明,石蜡/TDI质量比对ECRM岩心分数影响较大。当石蜡与TDI的质量比为1:2时,ECRM的核心分数为65.3%。在600 rpm搅拌
英语原文共 16 页, 植物细胞,第一卷。 20:2357-2371,2008年9月,www.plantcell.orga2008年美国植物生物学家协会 拟南芥WRKY38和WRKY62转录因子与组蛋白去乙酰化酶19在碱基防御中的相互作用w 金康昌,赖志兵,范宝芳,陈志祥1 普渡大学植物学和植物病理学系,西拉斐特,印第安纳州47907-2054 拟南芥WRKY38和WRKY62编码两种结构相似的III型WRKY转录因子,由水杨酸(SA)或丁香假单胞菌(Pseudomonas Syringae)以非表达依赖PR Gene(NPR1)的方式诱导。 抗病性和SA调控的致病相关1(PR1)基因表达在wrky38和wrky62单突变体中增强,在更大程度上在双突变体中增强。 过表达WRKY38或WRKY62可降低抗病性和PR1的表达。 因此,WRKY38和WRKY62作为植物基础防御的负调节因子。 WRKY38和WRKY62与组蛋白去乙酰化酶19(HDA19)相互作用)。 紫丁香也能诱导HDA19的表达,其诱导转录本的稳定
英语原文共 11 页, 用于高性能超级电容器电极的碳氮化物诱导的化学掺杂二维MXene的合成策略 Yeoheung Yoon, Minhe Lee, Seong Ku Kim, Garam Bae, Wooseok Song, Sung Myung, Jongsun Lim, Sun Sook Lee, Taehyoung Zyung, and Ki-Seok An* 摘要:通过合成由聚合物氮化碳(p-C3N4)诱导的氮掺杂2D Ti2CTx(同时充当氮源和插层剂)来改善超级电容器电极的电容的分步策略被报道出来。 NH2CN(氰酰胺)可以在500-700℃通过凝结反应在Ti2CTx纳米表面形成p-C3N4。然后对p-C3N4和Ti2CTx复合物进行热处理,以获得氮掺杂的Ti2CTx纳米片。三嗪基的p-C3N4在700℃以上分解;因此,氮元素肯定可以在900℃掺杂到内部碳层或Ti2CTx纳米片的缺陷中。 Ti2CTx的扩展层间距离和c-晶格参数(c-LPs为28.66 Aring;)证明,在掺杂过程中,层间生长的p-C3N4会使Ti2CTx的纳米片分层。 此外,Ti2CTx中的15.48%氮掺杂可
英语原文共 8 页, 制造与工业工程和工程管理学士和硕士学位的新课程 Zaki Sari 摘要:本文论述了阿尔及利亚的特莱姆森大学制造与工业工程和工程管理学士和硕士学位新课程的设计和实施。本课程旨在为学生提供工程、技术和管理领域的多学科知识。这门课程在莱姆森大学的实施显示了学生技能的巨大提高,这使得它成为一门国家课程。 关键词:制造工程;工业工程;工程管理;学士学位;硕士学位;课程;技术教育;工程教育。 介绍: 在过去的几十年里,在工业上使用的技术中有了大量的新发现。作为一个例子,可编程逻辑控制器完全改变了工业系统的控制方式。与此同时,这些行业的管理方式也发生了彻底的改变。开发了新的方法和技术来优化设备的使用,提高质量,减少成本和延迟。由于这些事实,工业需要新技能的
Available online at www.sciencedirect.com ScienceDirect Procedia Manufacturing 44 (2020) 261–268 1st nternational Conference on ptimiation-Driven Architectural Design ( PTA C 201) Design and Creation of an Energy Efficient Prefabricated ousing nit based on pecific Taonomy and ptimiation Techniues a a a a Aimilios Michael Andreas avvidesConstantinos Vassiliades Elina Triantafyllidou aDepartment of Architecture, University of Cyprus P.O. Box 20537, 1678, Nicosia Cyprus Abstract This paper aims to eamine the integration of environmental systems and strategies in environmentally friendly and technologically advancedoff–grid prefabricated housing units. The study is based on a comprehensive precedent and literature revie of current and proposed applications of prefabricated assembly methods and their inherent potentialin terms of both design and constructionto incorporate the integration of the systems mentioned
Trade across tribal,geographic or national boundaries has contributed to economic welfare throughout time.Eons before David Ricardo discussed the benefits of comparative advantage (Ricardo, 1969) ,the benefits of international trade were a feet of life.The question,'How much should we trade?'may have been a key consideration in development of trade regulators,such as customs duty and tariff. Free trade,or trade across national borders without customs barrier,is also an economic concept with historic precedent.A circa 400 B.C.E.duty free trade agreement between Leucon I ofBorporus and Athens(Burstein,1993)evidences early trade cooperation between nations.Specific centers of free trade,outside customs territory,are used today by over 100 nations as tools to increase national wealth.A characteristic common to 21st Century centers of trade is access to multiple transportation modes.A marine or riparian port facility,airfield,rail depot and highway may be co-located,providing intermo
In recent years, with the increasement of car ownership and road mileage, a series of problems that cannot be properly solved by traditional cars are increasingly prominent such as traffic congestion, accidents, pollution and land resource shortage. The development of intelligent vehicle technology, which is regarded as an effective solution, has attracted much attention. American Institute of Electrical and Electronics Engineers (IEEE) predicts that the proportion of automatic driving vehicles will reach 75 percent by 2040. The automobile transportation system will usher in changes, and the intelligent automobile may subvert the current operation mode of automobile transportation industry. Inspired by a variety of preferential policies, such as Chinarsquo;s manufacturing 2025 and Chinarsquo;s manufacturing 2025-technical road map in key areas, China rsquo;s intelligent automobile manufacturing had a very rapid development, and the permeability of intelligent driving assisted d
Accepted Manuscript Title: Effects of group arguments on rumor belief and transmission in online communities: An information cascade and group polarization perspective Authors: Quansheng Wang, Xue Yang, Wanyu Xi PII: S0378-7206(17)30905-9 DOI: https://doi.org/10.1016/j.im.2017.10.004 Reference: INFMAN 3027 To appear in: INFMAN Received date: 8-2-2016 Revised date: 3-10-2017 Accepted date: 15-10-2017 Please cite this article as: Quansheng Wang, Xue Yang, Wanyu Xi, Effects of group arguments on rumor belief and transmission in online communities: An information cascade and group polarization perspective, Information and Management https://doi.org/10.1016/j.im.2017.10.004 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is publishe
Customer experience in the B2B area: The impact of age-related impressions Laurence Lecoeuvre Rodney Turner Volker G. Kuppelwieser 3. Methodology We chose an ontological framework rooted in constructivism, which suggests that each observer creates the inherent and intrinsic meaning of social phenomena (Given, 2008; Ostlund uml; et al., 2011). We followed an inductive approach to produce meanings from the data collected in order to identify patterns and relationships (Saunders et al., 2012). We applied a qualitative methodology mainly based on interviews. We proceeded with a total of ten non-directive and semi-directive interviews (see Table 1). The sample is relevant and appropriate because we aim for a broad approach to age perception rather than narrowing the methodology to a specific context. The sample size was determined by theoretical/practical saturation (Charmaz, 2006, 2014; Locke, 2001). Since our objective was theory building and not theory testing,
加微信咨询
加QQ咨询
服务时间:09:00-23:50(周一至周日)