نتایج جستجو برای: cutting direction

تعداد نتایج: 191564  

2009
LAUREN E. IMWALLE GREGORY D. MYER KEVIN R. FORD TIMOTHY E. HEWETT

Imwalle, LE, Myer, GD, Ford, KR, and Hewett, TE, Relationship between hip and knee kinematics in athletic women during cutting maneuvers: a possible link to noncontact anterior cruciate ligament injury and prevention. J Strength Cond Res 23(8): 2223–2230, 2009—The purposes of this study were to compare lower-extremity kinematics during a 45 and 90 cutting maneuver and to examine the relationshi...

The stability behavior of low immersion helical end milling processes is investigated in this paper. Low radial immersion milling operations involve interrupted cutting which induces chatter vibration under certain cutting conditions. Time Finite Element Analysis (TFEA) is suggested for an approximate solution for delayed differential equations encountered during interrupted milling. An improve...

2008
S. Jiang Y. S. Xu J. Wu

To improve the cutting efficiency, one of key approaches is to control with constant force in the full depth working condition. And the controller design is vital to realize the real-time feasibility and robustness of the system. A neuron optimization based PID approach is proposed in this paper and adopted in the NC cutting process. This approach optimizes the parameters of PID controller real...

2013
David Kurokawa John K. Lai Ariel D. Procaccia

For decades researchers have struggled with the problem of envy-free cake cutting: how to divide a divisible good between multiple agents so that each agent likes his own allocation best. Although an envy-free cake cutting protocol was ultimately devised, it is unbounded, in the sense that the number of operations can be arbitrarily large, depending on the preferences of the agents. We ask whet...

Journal: :Discrete Applied Mathematics 2017
Adrian Dumitrescu Anirban Ghosh Masud Hasan

I) Given a segment-cuttable polygon P drawn on a planar piece of material Q, we show how to cut P out of Q by a (short) segment saw with a total length of the cuts no more than 2.5 times the optimal. We revise the algorithm of Demaine et al. (2001) so as to achieve this ratio. (II) We prove that any collection R of n disjoint1 axis-parallel rectangles drawn on a planar piece of material Q is cu...

2012
Yoshifumi Manabe Tatsuaki Okamoto

This paper proposes a cake-cutting protocol using cryptography when the cake is a heterogeneous good that is represented by an interval on a real line. Although the Dubins-Spanier moving-knife protocol with one knife achieves simple fairness, all players must execute the protocol synchronously. Thus, the protocol cannot be executed on asynchronous networks such as the Internet. We show that the...

Journal: :American journal of proctology 1952
A Waters

Due to the stubborn nature of the deterministic job-shop scheduling problem many solutions proposed are of hybrid construction cutting across the traditional disciplines. The problem has been investigated from a variety of perspectives resulting in several analytical techniques combining generic as well as problem specific strategies. We seek to assess a subclass of this problem in which the ob...

Journal: :IJAT 2015
Kazuma Asakura Jiwang Yan

Improving water repellency of a metal surface is required in a wide range of industrial applications. In this study, the water repellency control of an oxygenfree copper surface was attempted by generating micro V grooves on the surface by using ultraprecision cutting technology. The results showed that the maximum contact angle of a water drop on a micro Vgrooved surface could be as high as ap...

2005
Adam Clark Andreas Karch Pavel Kovtun Daisuke Yamada

Free scalar field theory in the sector with a large number of particles can be interpreted as bosonic string theory on anti-de Sitter space of vanishing radius. Different ways of writing the field theory Hamiltonian translate to different ways of reparametrizing the world-sheet σ coordinate. Adding a mass term in the field theory corresponds to cutting off the warped AdS direction, with cut-off...

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