Fall and rise of the Black Sea ecosystem



Evaluation of compression algorithms for motion command generation
Yaman, Ulaş; Dölen, Melik (2011-04-15)
This paper focuses on a direct command generation technique for Computer Numerical Control (CNC) machine systems. In this paradigm, higher-order differences of a given trajectory (i.e, position) are computed and the resulting data are compacted via data compression techniques. As a part of the command generation scheme, the paper also introduces a new data compression technique titled ΔY10. Apart from this new method, the performances of the proposed generator employing different compression algorithms (suc...
Spectra, vacua, and the unitarity of Lovelock gravity in D-dimensional AdS spacetimes
Sisman, Tahsin Cagri; Gullu, Ibrahim; Tekin, Bayram (2012-08-24)
We explicitly confirm the expectation that generic Lovelock gravity in D dimensions has a unitary massless spin-2 excitation around any one of its constant curvature vacua just like the cosmological Einstein gravity. The propagator of the theory reduces to that of Einstein's gravity, but scattering amplitudes must be computed with an effective Newton's constant which we provide. Tree-level unitarity imposes a single constraint on the parameters of the theory yielding a wide range of unitary region. As an ex...
Seasonal distribution of fish eggs and larvae off sinop (the southern Black Sea) in 1999-2000
Satilmis, HH; Gordina, AD; Bat, L; Bircan, R; Culha, M; Akbulut, M; Kıdeyş, Ahmet Erkan (2003-05-01)
The seasonal distribution of fish eggs and larvae off Sinop, the central southern Black Sea, was studied by using vertical and horizontal tows at two stations at biweekly intervals between January 1999 and November 2000. Besides basic oceanographic parameters, macro gelatinous was also sampled to evaluate their relation to fish eggs and larvae. Eggs or larvae of a total 23 fish species were present in the samples. Most of the species were found to occur during spring and summer. It is observed that especial...
Numerical simulation of catastrophic tsunami propagation in the Indian Ocean (December 26, 2004)
Zaitsev, AI; Kurkin, AA; Levin, BV; Pelinovsky, EN; Yalçıner, Ahmet Cevdet; Troitskaya, YI; Ermakov, SA (2005-05-01)
Feeding, respiration and growth of ctenophore Beroe cf ovata in the low salinity conditions of the Caspian Sea
Kıdeyş, Ahmet Erkan; Anninsky, BE; Shiganova, TA; Roohi, A; Tabari, MR; Youseffan, M; Rostamiya, MT (2004-01-01)
The ctenophore Beroe cf ovata, which spontaneously entered the Black Sea in the 1990s and suppressed the previous ctenophoran invader Mnemiopsis leidyi by its predatory impact, is currently considered for intentional introduction to the Caspian Sea as well. In order to assess its impact on Mnemiopsis in the Caspian, Beroe was transported during 2002 from the Black Sea and the Bosporus to the Khazerabad laboratory (Mazandaran), on the Caspian coast of Iran, where experiments on its survival in Caspian water,...
Citation Formats
A. E. Kıdeyş, “Fall and rise of the Black Sea ecosystem,” SCIENCE, pp. 1482–1484, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31480.