We tested three species of praying mantis, Parasphendale affinis, Popa spurca and Sphodromantis lineola, with computer-generated stimuli that differed in size, contrast, configuration and movement pattern to determine the effects of these parameters on visual tracking and striking behavior. Overall, black disks moving erratically against a white background were strong releasers of both behavior...

We present an implementation of a recent algorithm to compute shortest-path trees in unit disk graphs in O(n log n) worst-case time, where n is the number of disks. In the minimum-separation problem, we are given n unit disks and two points s and t, not contained in any of the disks, and we want to compute the minimum number of disks one needs to retain so that any curve connecting s to t inter...

We have proposed an Autonomous Disks for the advanced data management. The Autonomous Disks provide data distribution and high reliability. The Autonomous Disks configure a cluster and handle access from host in the cluster. In this paper, we modify dynamic reconfiguration algorithms allowing the usual operations dulling the reconfiguration focussing a period of keep lock. And we implement them...

We show that dwarf nova disks in quiescence have rather low magnetic Reynolds number, of order 10. Numerical simulations of magnetized accretion disks suggest that under these conditions magnetohydrodynamic turbulence and the associated angular momentum transport is sharply reduced. This could be the physical origin of episodic accretion in dwarf nova disks. If so, the standard disk instability...

Household harvesting of wild fish and game contributes to food security in indigenous communities across the Arctic, some regions plays an important role cultural identity peoples. The degree which state regulates restricts distribution country foods varies widely, however, this intervention local economies can affect livelihood opportunities. paper hypothesizes that where policy has contribute...

Using the well-known “displace, cut and reflect” method used to generate disks from given solutions of Einstein field equations, we construct static charged disks made of perfect fluid based on the Reissner-Nordström solution in isotropic coordinates. We also derive a simple stability condition for charged and non charged perfect fluid disks. As expected, we find that the presence of charge inc...

The cellular fatty acid composition of Mycobacterium vaccae JOB5 and Mycobacterium convolutum R22 was examined after growth on n-alkanes and compared with the fatty acids of the organisms after growth on 1-chlorohexadecane and 1-chlorooctadecane. Growth on n-alkanes resulted in normal fatty acid profiles. Mass spectral analyses indicated that, after growth on the terminally chlorinated n-alkane...

Two major changes occurred on the Nasdaq Stock Market during 1997: the implementation of the SEC’s Order Handling Rules, and a reduction in the quotation ticksize for many Nasdaq stocks to one-sixteenth from one-eighth. This paper presents a detailed empirical analysis of the impact of these changes on spreads, depth, use of Electronic Communications Networks, and market making positions. Of sp...

Suimiiary. The effect of temperature on the respiration rate of potato tuber slices has been analyzed in terms of the Arrhenius equation. Freshly cut disks, irrespective of thickness, show a linear response to increasing temperature up to 300 with an activation energy (E) of approximately 12.0 Kcal. Aged disks less than 1.0 mm thick also give a linear response with E similar to that of fresh di...

Lumbar disk lesions in 47 cases were initially diagnosed using MRI investigation, then, after surgery, biological and histopathological aspects of intervertebral disks were revealed. Pieces from intervertebral disks were used for electron microscopy studies in order to determine collagen in the components of the intervertebral disk. The aim of the present study was to highlight the corresponden...