Results 31 to 40 of about 864,739 (333)

Calculation and modeling tracked mobile robot

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2018
Introduction and consideration of basic device of an unmanned ground vehicle (UGV). Determination of the most significant characteristics for exploitation of UGV allows us to formulate the main task: this is the most effective overall design.
N.A. Esmagambet, A.N. Nurpeisova
doaj   +1 more source

Factors Determining Genotypic Variation in the Speed of Rice Germination

open access: yesAgronomy, 2021
Rapid germination is important for both direct seeded rice in the field and for the production of germinated brown rice for healthy food. This study aims to evaluate genotypic differences in germination speed and identify characteristics that determine ...
Sinh Chao, Jaquie Mitchell, Shu Fukai
doaj   +1 more source

Geometry, Isometries and Gauging of (2,1) Heterotic Sigma-Models [PDF]

open access: yes, 1996
The geometry of (2,1) supersymmetric sigma-models is reviewed and the conditions under which they have isometry symmetries are analysed. Certain potentials are constructed that play an important role in the gauging of such symmetries.
Bagger   +19 more
core   +3 more sources

Global Structural Behavior and Leg Strength for Jack-Up Rigs with Varying Environmental Parameters

open access: yesJournal of Marine Science and Engineering, 2023
In the mobile jack-up unit, the leg supporting the hull is a very important structure, and it is important to closely examine the changes in accident load, environmental load, and seabed ground during jack-up operation.
Myung-Su Yi, Joo-Shin Park
doaj   +1 more source

Effect of Sowing Dates on Fatty Acids and Phytosterols Patterns of Carthamus tinctorius L.

open access: yesApplied Sciences, 2019
Field experiments were carried out at the Regional Centre of Experimentation in Organic agriculture at Auch (near Toulouse, South west of France).
Jane Roche   +3 more
doaj   +1 more source

Hull Number Effect in Ship Using Conveyor on Ocean Waste Collection

open access: yesKapal, 2021
The increase in ocean waste continues to grow from year to year, especially plastic and solid waste. Various ocean waste collection ships using conveyors exist, both in the form of designs and already in operation, but there has been no research on how ...
Erik Sugianto   +3 more
doaj   +1 more source

Review and comparison of methods to model ship hull roughness

open access: yes, 2020
There is a large body of research available focusing on how ship hull conditions, including various hull coatings, coating defects, and biofouling, influence the boundary layer, and hence resistance and wake field of a ship.
J. Andersson   +4 more
semanticscholar   +1 more source

Optimization of Catamaran Demihull Form in Early Stages of the Design Process [PDF]

open access: yes, 2014
The amounts of research about catamaran have generated a practical formula to simplify the calculations of catamaran resistance. Ship designer will calculate the predictions of catamaran resistance rapidly.
Iqbal, M. (Muhammad)   +1 more
core   +2 more sources

Transition from connected to fragmented vegetation across an environmental gradient: scaling laws in ecotone geometry [PDF]

open access: yes, 2009
A change in the environmental conditions across space—for example, altitude or latitude—can cause significant changes in the density of a vegetation type and, consequently, in spatial connectivity.
Gastner, Michael T.   +3 more
core   +1 more source

Set Estimation Under Biconvexity Restrictions

open access: yes, 2020
A set in the Euclidean plane is said to be biconvex if, for some angle $\theta\in[0,\pi/2)$, all its sections along straight lines with inclination angles $\theta$ and $\theta+\pi/2$ are convex sets (i.e, empty sets or segments). Biconvexity is a natural
Cholaquidis, Alejandro, Cuevas, Antonio
core   +1 more source

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