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Challenges and Opportunities for Strengthening Bottom‐Tow Fisheries Sustainability

Fish and Fisheries, Volume 27, Issue 4, Page 987-1005, July 2026.
ABSTRACT Bottom‐tow gear fisheries (trawls and dredges) produce ~24 million mt of harvest annually, representing a globally important animal‐sourced food system. While many are currently sustainably managed, growing concern over the potential for ecosystem impacts from bottom‐tow gears has increased pressure to improve these fisheries.
Suresh A. Sethi, Robert D. Murphy Jr., Matthew R. Baker, Anita C. Kroska, Haraldur A. Einarsson, Owen S. Hamel, Shelton J. Harley, Pingguo He, James Ianelli, Stan Kotwicki, Robert A. McConnaughey, Chris McGonigle, Max V. Mossler, Brent Paine, Felipe Restrepo, Leslie A. Roberson, Craig S. Rose, Maritza S. Saldarriaga, Marija Sciberras, T. Scott Smeltz, Petri Suuronen, Mary Beth Tooley, William Tweit, Sarah R. Webster, Chris Wilcox, Qiang Wu, Noëlle Yochum, Ray Hilborn, Bradley P. Harris   +28 more
wiley   +1 more source

To Mars through LEO: How commercial space travel will change exploration‐enabling research

Experimental Physiology, EarlyView.
Christopher Puhl, Michail Magkos
wiley   +1 more source

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Sensitivity of Optical Measuring System for the Determination of Optimal Reversible Two-Speed Planetary Gear Train for Machine Tool Gearboxes

MAPAN, 2019
The main goal of the study was to determine the sensitivity of optical measuring system for the determination of optimal reversible two-speed planetary gear train for machine tool gearboxes. The sensitivity could be determined by different experimental approaches but in this article adaptive neurofuzzy inference system (ANFIS) was used.
Jelena Stefanović-Marinović, Sanjin Troha, Miloš Milovančević   +2 more
openaire   +1 more source

Shifting capabilities of two-speed, two-carrier planetary gear trains

2023
This article deals with two-carrier planetary gearsets having two connecting and two external shafts, which may operate as two-speed gearboxes when brakes are placed on two external shafts. Analysis of the S16WN(S/E) gearbox is performed using the torque method, the specific torques are determined on all shafts, and then used to calculate both ...
Marković, Kristina, Troha, Sanjin, Vrcan, Željko   +2 more
openaire  

Two-Speed Two-Carrier Planetary Gear Trains

2015
The following paper reviews all of the possible cases of coupled two-carrier planetary gears with four external shafts. An emphasis is made on the work of these gears with one degree of freedom, one input and one output shaft and brakes on the other two shafts. When switching over the gears, the speed ratio of the gear is changed, thus allowing the use
Troha, Sanjin, Karaivanov, Dimitar, Džindo, Emina   +3 more
openaire   +2 more sources

Basic Kinematic Characterstics of Two-Speed Planetary Gear Trains with Brakes on Single Shafts

2020
This paper deals with compound two-carrier planetary gear trains (PGTs) with two coupled and four external shafts. Primarly, all possible structural schemes and systematization of these transmissions are pointed. Further research has been made into gear trains using coupling shafts for power input and output, with the controlling brakes acting on ...
Troha, Sanjin, Vrcan, Željko
openaire   +2 more sources

THE POSSIBILITIES OF THE TWO-SPEED PLANETARY GEAR TRAINS APPLICATION IN THE TRANSPORT SYSTEMS

2017
Multi-stage planetary gear trains are obtained from single stage gear trains by linking one or two planetary units shafts. Adequate design of PGT could be used as multiple speed gearboxes. Two-speed two-carrier planetary gears which consist of two coupled and four external shafts and have brakes on single shafts could be use in the systems which ...
Stefanović-Marinović, Jelena, Troha, Sanjin, Milovančević, Miloš   +2 more
openaire   +2 more sources

TWO-CARRIER TWO-SPEED PLANETARY GEAR TRAINS WITH BRAKES ON SINGLE SHAFTS

2017
This paper considers two-speed planetary gear trains with four external shafts, composed of two simple planetary gear trains. Possible shemes of these planetary gear trains are pointed including systematization of variants. By putting brakes on different shafts transmission ratio changes and also power flow through the planetary gear trains.
Stefanović-Marinović, Jelena, Troha, Sanjin   +1 more
openaire   +2 more sources

STRUCTURE AND IMPORTANT PARAMETERS CHOICE OF THE TWO-SPEED TWO-CARRIER PLANETARY GEAR TRAINS

2019
Compared to conventional gear trains, planetary gear trains (PGTs) offer numerous benefits. Multi-stage planetary gear trains are built by linking one or two shafts of two different single-stage planetary gear trains. A special multi-stage PGT type is a two-speed two-carrier PGT consisting of two coupling shafts and four external shafts. There are many
Troha, Sanjin, Vrcan, Željko
openaire   +2 more sources

Characteristics and application possibilities of some two-speed planetary gear trains

2013
In this lecture the review of compound two-speed two-carrier planetary gear trains is displayed. The gears trains are grouped in three different groups with regard to their design characteristics and certain number of different trains is defined. The labelling system of trains is defined.
openaire