IPv6: The next generation internet protocol     

Harsha?SrinathEmail author 《Resonance》2003,8(4):8-16

IPv4, the workhorse protocol of the currently popular TCP/ IP protocol suite, is fast becoming obsolete. The exponential growth of the Internet is the main reason that has required the creation of the next generation of Internet Protocol-IPv6. IPv6 is much more flexible and promises to take care of the address space and security issues in the foreseeable future. In this part we explain the new features introduced in the emerging Internet Protocol standard and why they have been introduced. Harsha Stlnath is currently pursning his MS degree in Computer Science at the Center for Advanced Computer Studica (CACS) in University of Loulsiana at Lafayette, USA. His research interests include networking with an emphasis on wireless networks, distributed databases and data mining  相似文献   

Evaluating the generalisability of neural rumour verification models     

《Information processing & management》2023,60(1):103116

Research on automated social media rumour verification, the task of identifying the veracity of questionable information circulating on social media, has yielded neural models achieving high performance, with accuracy scores that often exceed 90%. However, none of these studies focus on the real-world generalisability of the proposed approaches, that is whether the models perform well on datasets other than those on which they were initially trained and tested. In this work we aim to fill this gap by assessing the generalisability of top performing neural rumour verification models covering a range of different architectures from the perspectives of both topic and temporal robustness. For a more complete evaluation of generalisability, we collect and release COVID-RV, a novel dataset of Twitter conversations revolving around COVID-19 rumours. Unlike other existing COVID-19 datasets, our COVID-RV contains conversations around rumours that follow the format of prominent rumour verification benchmarks, while being different from them in terms of topic and time scale, thus allowing better assessment of the temporal robustness of the models. We evaluate model performance on COVID-RV and three popular rumour verification datasets to understand limitations and advantages of different model architectures, training datasets and evaluation scenarios. We find a dramatic drop in performance when testing models on a different dataset from that used for training. Further, we evaluate the ability of models to generalise in a few-shot learning setup, as well as when word embeddings are updated with the vocabulary of a new, unseen rumour. Drawing upon our experiments we discuss challenges and make recommendations for future research directions in addressing this important problem.  相似文献   

烟草物料吸湿性研究     

王淼  章晓白  徐全华  陈海涛 《中国科技信息》2014,(1):115-117

研究不同贮存时间、不同贮存高度下膨胀烟丝、膨胀梗丝的吸湿性差异,结果表明:(1)在半开放式贮丝环境中,贮存柜内表层物料吸湿效果明显,含水率显著高于生产水平;随着贮存高度的增加,烟草物料含水率呈现降低趋势。(2)膨胀梗丝较膨胀烟丝吸湿能力强。(3)膨胀梗丝的贮存时间应大于膨胀烟丝,二者均以贮存时间(12-18)h,贮存高度不低于50cm为宜。  相似文献   

Quick start-up of EGSB reactor treating fresh leachate of municipal solid waste     

刘建勇  边华丹  曹亚丽  钟江平  胡军  刘强  钱光人  刘峰  邰俊 《上海大学学报(英文版)》2011,15(3):212-217

An expanded granular sludge bed (EGSB) reactor inoculated with anaerobic granular sludge was started up with its COD removal performance, self-balancing of pH, biogas production rate and characteristics of the granular sludge during the start-up period being investigated. The results indicated that the EGSB reactor can be started up successfully in 27 d by increasing the organic loading rate rapidly. The removal efficiency of COD was maintained above 93% with influent COD concentration of 25 000 mg/L and OL...  相似文献   

论高校扩招形势下的学风机制建设   总被引：9，自引：0，他引：9  

夏绍能 《教育理论与实践》2006,(12)

审视高校扩招后存在的教风、学风、考风等问题,高等学校应积极探索一套行之有效的学风机制建设新思路。  相似文献   

热扩芯光纤滤波器构成的多波长可调谐掺铒光纤激光器     

唐一峰 《闽江学院学报》2013,34(2):45-48

提出了一种基于由热扩芯光纤构成的马赫-曾德干涉滤波器的新型多波长可调谐环形腔掺铒光纤激光器.马赫-曾德干涉滤波器由一段掺镱光纤和两根实验室自制的热扩芯光纤熔接而成.当马赫-曾德干涉滤波器中的掺镱光纤受到980 nm激光二极管泵浦时,滤波器的干涉条纹将向长波长方向漂移.利用该可调谐滤波器构建一个环形腔掺铒光纤激光器,获得了11个激射波长同时输出,每个激射波长的信噪比都超过40 dB.通过改变掺镱光纤的泵浦功率,激光器的激射波长可调.  相似文献   

复合载体夯扩桩承载力研究分析     

王虎妹 《天津职业院校联合学报》2013,15(2):21-26

复合载体夯扩桩是一种地基处理的新工法,具有承载力高、变形小的特点。文章结合工程实际,介绍了该桩的施工工艺、承载特点及检测效果。实践证明,复合载体夯扩桩可大幅度提高桩基承载能力和减少地基沉降,具有明显的经济效益和广泛的应用前景,是一项值得大力推广的技术。  相似文献   

“三段式教学法”在高校瑜伽课程教学中的应用研究     

缪慧梅 《扬州职业大学学报》2013,(3):56-58

结合传统的“三段式教学法”以及瑜伽运动的自身特点和现代的体育教育理念,提出了瑜伽课程优化的“三段式”教学模式,并对每个阶段的教学内容和教学方法进行了具体的研究和探讨。  相似文献   

电子实验的拓展及设计     

宁新宁 《周口师范学院学报》2012,29(5):63-65

以555定时器的实验为例,介绍电子实验的拓展及设计.本实验可分为三步：第一步,学生基于教材的知识和电路进行的验证实验,根据教材提供的电路图及元件参数搭接相应的电路,测出相关数据,验证教材结论;第二步,学生对教材深入研究的拓展实验,根据教材提供的电路进行深度加工,产生实用电路;第三步,学生综合前两步的设计实验,根据前两步实验结果设计出能实现现实功能的电路,主要元件要求固定,其他元件可以任意挑选.  相似文献   

扩招后不同层次的学生学习观念调查     

刘陈艳  薛志红 《教育理论与实践》2005,(10)

随着高等学校招生规模的扩大,导致水平参差不齐的学生在学习观念上有许多不同之处,对非英语专业不同类型学生的学习观念的调查研究,可为高校教学模式的改进提供一些借鉴。  相似文献