全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:V. G. Hart , M. J. T. Lewis
来源:[J].Journal of Engineering Mathematics(IF 1.075), 2010, Vol.67 (3), pp.261-273Springer
摘要:Abstract(#br)The mechanics and experimental work concerned with ancient catapults powered by torsion springs is described. Mathematical models are proposed both for the earlier Greek palintone, or stone thrower, and a supposedly more powerful machine based on the conjectured form...
作者:Thirunavukkarasu Ramanathan , Tamizhmani Jayachandran , C Nirupama ...
来源:[J].International Journal of Orthodontic Rehabilitation, 2018, Vol.9 (1), pp.41-47Wolters Kluwer
摘要:... Ballista spring is one of the simplified orthodontic auxiliary spring developed by Harry Jacoby used for repositioning impacted teeth. It delivers light force, excellent biomechanics, simplicity of the design, patient comfort, and esthetics. This case report presents a case o...
作者:赵则章 , 江建慧
来源:[J].计算机工程与应用, 2007, (07), pp.93-97+132CNKI
摘要:健壮性已经成为衡量软件性能的一个重要指标。目前,人们已经提出了一些健壮性测试的方法,并且构建了一批健壮性测试工具。对这些方法和工具进行了研究,并利用开放源代码工具对Linux2.4.22进行了测试,还...
被引频次:12下载频次:193
作者:Schmerken, Ivy
来源:[J].Wall Street & Technology, 2008, Vol.4 (3), pp.n/aProQuest
摘要:In a move to aggregate liquidity in the fragmented options market, start-up broker-dealer Ballista introduced the first equity options liquidity pool that will provide electronic access to public and nonpublic liquidity from banks, hedge funds and market makers. Pending regulator...
作者:Rodolfo Guzzi , Giovanni Ballista , Walter Di Nicolantonio ...
来源:[J].Atmospheric Environment(IF 3.11), 2001, Vol.35 (30), pp.5079-5091CrossRef
作者:Raghav Pradeep , Singh Kanika , Munish Reddy C ...
来源:[J].International journal of clinical pediatric dentistry, 2017, Vol.10 (3), pp.313-317PubMed
摘要:... The three impacted canines were surgically exposed, attachment bonded, traction given with ballista spring for vertical and labial movement, and ideally positioned with fixed orthodontic mechanotherapy.;;Raghav P, Singh K, Reddy CM, Joshi D, Jain S. Treatment of Maxillary Imp...
作者:田欢
来源:[J].工业仪表与自动化装置, 2014, (01), pp.95-97CNKI
摘要:...该文介绍了当今操作系统健壮性的4种基准程序测试的主要方法,重点介绍健壮性基准测试的工作原理,采用Ballista工具对Linux系统进行了健壮性测试,并对所测数据进行相应的分析。
被引频次:-下载频次:-
作者:刘啸虎
来源:[J].国家航海, 2014, (01), pp.75-87CNKI
摘要:徐福东渡对东亚诸国影响巨大。本文经过考据后认为:徐福出海携带的童男童女,应该是男十七岁以下、女十五岁以下尚不满婚龄的少年男女,且有可能多征集自山东半岛的齐国故地;为徐福船队提供武装保护的弓弩...
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作者:Тихонов В.А. / Tikhonov V.A.
来源:[J].Materialy po Arheologii i Istorii Antičnogo i Srednevekovogo Kryma, 2014, Vol.6, pp.183-188DOAJ
摘要:В рассказе о римско-боспорской войне конца III — начала IV вв. у Константина Багрянородного описано применение херсонитами против боспорцев арбалетов,...
作者:Daly, Rob
来源:[J].Inside Market Data, 2009, Vol.24 (37), pp.5ProQuest
摘要:Ballista Securities, operator of an alternative trading system for equity block options and delta-neutral orders, plans to expand its data infrastructure to establish new and backup connectivity to exchanges and to build a new disaster recovery site. Ballista currently uses Activ...

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