Tuna purse seine fishery is a commercial and industrial fishery in the Iranian waters of Oman Sea. An observer programme was conducted to identify the by-catch composition of the tuna purse seine fishery in the Iranian waters of the Oman Sea. Investigations were carried out on board of purse seiner vessel “named Parsian Shila” between September and October 2015. The by-catch was composed of 17 ...

Skilled fielders were filmed as they ran backward or forward to catch balls projected toward them from a bowling machine 45 m away. They ran at a speed that kept the acceleration of the tangent of the angle of elevation of gaze to the ball at 0. This algorithm does not tell fielders where or when the ball will land, but it ensures that they run through the place where the ball drops to catch he...

In this paper, we propose a ball tracking and catching strategy called GAG (short for “gaining angle of gaze”) that enables a mobile robot to track and catch a ball flying in three-dimensional space. The GAG strategy does not require the information of the ball’s position in three-dimensional space, but instead requires only the angle of elevation of gaze captured as two-dimensional visual info...

Nowadays, video is a primary information carrier in www (world wild web) and moving objects are often carrying more information. But it is hard to catch these objects in video quickly and correctly. In this paper, we put forward a method to catch moving object in video. Firstly, based on difference image method, we determine moving region in video image. To avoid hardness to build background, w...

Recreational angling has been implicated in population declines of some marine and freshwater fish, but this activity is rarely considered as a threat or even halted when endangered species are targeted. Indeed, in some cases, anglers are drawn to fish for rare or endangered species. Conservation-oriented behaviours such as catch-and-release are often practiced voluntarily due to the ethics of ...

We model the effect of a no-take reserve in a marine fishery management area, such as on a coral reef. Implicitly, eggs and larvae are mobile but adults are not; and there is open access fishing outside the reserve. A reserve is found to increase equilibrium catch if the prior ratio of stock to carrying capacity is less than a half, and the catch-maximising reserve proportion rises towards a ha...

This paper reports tests of the hypothesis that a 10 mse-c. 667 nm. fovea1 teSt flash, presented upon a steady, 8” background, is detected by a pathway whose sensitivity is monotonically related io a linear functional of photoreceptor quantum catch. The hypothesis is tested by (1) measuring incrementthreshold curves for various background wavelenghts, and (2) measuring threshold upon mixtures o...

Reduction of the by-catch in shrimp fishery is an important goal worldwide. In order to compare by-catch using the conventional trawling net and a newly designed short funnel net, nine cruises were carried out by the commercial fleet operating in the Gulf of Tehuantepec, Mexico. A total of 480 trawls were done (mean duration: 85 min). The experimental trawls using the modified net produced a 21...

Purpose Small for gestational age (SGA) is confusingly defined as birth weight (BW) either below 3rd percentile or 10th percentile for infants. This study aimed to compare postnatal catch-up growth between SGA groups according to different definitions. Methods Data of 129 infants born with BW below the 10th percentile and admitted to Korea University Anam Hospital and Ansan Hospital were retr...