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438篇 您的检索式：作者名="LAHTI"

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	题名	作者	年代	出处	被引量
1	Control of exterior ballistic properties of spin-stabilized bullet by optimizing internal mass distribution显示文摘This paper introduces a novel approach for controlling the exterior ballistic properties of spin-stabilized bullets by optimizing their internal mass distributions. Specifically, the properties of interest are the bullets’ stability characteristics that are examined through dynamic and gyroscopic stability parameters.New analytical expressions for aerodynamic quantities are also derived to address the compressibility of air. These expressions are utilized in a bullet model that enables efficient computation of the stability parameters for a given mass distribution. The bullet model is used in the formulation of nonlinear optimization problems that provide optimal mass distributions with respect to given goals, i.e., desired stability characteristics. The bullet types investigated in this paper are a long range bullet and a limited range training bullet. In the optimization of the mass distribution of the long range bullet, the goal is that the bullet stays stable for as long as possible. The mass distribution of the training bullet is optimized such that the bullet is stable at launch but becomes unstable shortly afterwards. The global optimal solutions obtained with the new approach fulfill the desired stability characteristics better than currently used uniformly filled bullets. Overall, the optimization approach reveals a new goal focused philosophy for bullet design compared to current trial and error design practices.	Janne Lahti Timo Sailaranta Mikko Harju Kai Virtanen	2019	Defence Technology(防务技术)2019，15，1：	3
2	Rosio^(TM)摩擦搅拌焊机器人焊接复杂工件显示文摘空间曲线焊缝的摩擦搅拌焊(FSW),一直是FSW工艺所面临的技术挑战这是因为任何一套设备首先要考虑的是用户的需求是什么。而不是设备移动的灵活性借助重载工业机器人.摩擦搅拌焊这种方法在全新领域中的应用被创建起来基于公路、铁路、航空等工业领域产品对高质量、高可靠性的要求,摩擦搅拌焊机器人面临传统机器人灵活性方面的挑战。	Mikael Soron Kari Erik Lahti	2014	电焊机2014，44，4：	2
3	International Trade, Entrepreneurship, and Monopolistic Competition: German Hidden Champions and Global Markets显示文摘	Arto Lahti	2014	China-USA Business Review2014，13，9：	2
4	Viral pneumonia显示文摘	Olli Ruuskanen Elina Lahti Lance C Jennings David R Murdoch	2011	2011 (9773)2011，，9773：	2
5	Subanesthetic doses of ketamine stimutate psychosis in schizophrenia 显示文摘	Lahti AC Kofffel B La Poret D	1995	Neuropsychopharmacology1995，13，：	1
6	Transmission line corona losses under hoar frost conditions显示文摘	Lahti K Lahtinen M	1997	IEEE Trans on Power Delivery1997，12，2：	1
7	Visualdetection of cyanobacterial hepatotoxins by thin-layer chromatography and application to water analysis显示文摘	Anna Pelander Ilkka Ojanper Kimti Lahti	2000	Water Research2000，34，10：	1
8	Subanesthetic doses of ket-amine stimulate psychosis in schizophrenia显示文摘	Lahti A C Koffel B LaPorte D	1995	Neuropsychophar-macology1995，13，1：	1
9	Nitric oxide pro- duction and signaling in inflammation 显示文摘	Karhonen R Lahti A Kankaanranta H	2005	Curr Drug Targets In- flamm Allergy2005，4，4：	1
10	Changes in toothbrushingfrequency in relation to changes in oral health-related knowledge andattitudes among children:A longitudinal study显示文摘	TOLVANEN M LAHTI S HAUSEN H	2010	Eur J Oral Sci2010，118，3：	1
11	Transmission line corona losses under hoar frost conditions显示文摘	Lahti K Lahtinen M Nousiainen K	1997	IEEE Trans on Power Delivery1997，12，2：	1
12	Developing the productivity of a dynamic workforce: The impact of informal knowledge transfer 显示文摘	LAHTI K ERIC D DARR VALDIS E KREBS	2002	Journal of Organizational Excellence Hoboken: Spring2002，21，2：	1
13	Models for intramolecular exchange in organic π-conjugated open-shell systems: a comparison of three non- kekule biphenyldinitrenes显示文摘	Minato M Lahti P M Van Willigen H	1993	J Am Chem Soc1993，115，：	1
14	Efficient purchasing in make-to-order supply chains显示文摘	Jahnukainen J Lahti M	1999	International Journal of Production Economics1999，59，：	1
15	Efficient purchasing in make-to-order supply chains显示文摘	Jahnukainen J Lahti M		0，，：	1
16	Responses to song playback vary with the vocal performance of both signal senders and receivers显示文摘	Dana L. Moseley David C. Lahti Jeffrey Podos	2013	Proceedings of the Royal Society B: Biological Sciences2013，，1768：	1
17	Novel insights into the epidemiology of Clostridium perfringens type A food poisoning显示文摘	LINDSTR M M HEIKINHEIMO A LAHTI P	2011	Food Microbiology2011，28，2：	1
18	How precise is egg discrimination in weaverbirds? 显示文摘	Lahti D C Lahti A R	2001	Anita Behav2001，63，：	1
19	Significant relationship between parental and child dental fear 显示文摘	Lahti S Luoto A	2010	Evidence-based dentistry2010，11，3：	1
20	One+one is more than two!!显示文摘	Lahti K	2003	Svetsaren(English Edition)2003，58，2：	1

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