When considering the future of offshore wind energy, developing cost effective methods of harnessing the offshore wind resource represents a significant challenge which must be overcome to make offshore wind a viable option. As the majority of the capital investment in offshore wind is in the form of infrastructure and operation and maintenance costs, reducing these expenditures could greatly r...

Let A and B be n × m matrices. The matrix B is said to be g-row majorized (respectively g-column majorized) by A, if every row (respectively column) of B, is g-majorized by the corresponding row (respectively column) of A. In this paper all kinds of g-majorization are studied on Mn,m, and the possible structure of their linear preservers will be found. Also all linear operators T : Mn,m ---> Mn...

The objective of this work is to demonstrate the viability applying Adjoint methods aerodynamic optimisation VAWTs. are very powerful techniques which have been implemented effectively in other fields, yet there an absence such within VAWT literature. A ‘semi-transient’ process proposed, using data from single instances time improve performance. This challenging due unsteady nature aerodynamics...

It is uncertain how corn (Zea mays L.) yield would be affected by planting in a twin-row orientation in the southeastern US. The objectives were to compare corn grain yield when: (i) planted in single and twin rows, (ii) plant densities at recommended (1R) and twice the recommended (2R) rate, and (iii) N rates of 168 and 336 kg/ha. Corn was irrigated using a subsurface drip irrigation system. T...

Introduction The Netherlands are actively involved in atmospheric composition measurements from space since 1995 with measurements from the GOME, sCIAMAChY and OMI satellite instruments. The MetOp satellite series with GOME-2 onboard will continue these measurements until 2020, thereby providing an important global climate data record. KNMI plays an active and often leading role in the analysis...

in order to investigate the competition indices of intercropping wheat and chickpea under nitrogen consumption, an experiment was arranged as factorial based on randomized complete block design with three replications during 2009 – 2010 in gonbad kavous university farm. planting patterns factor included four levels of sole cropping wheat (w), two rows of wheat with one row of chickpea (w2c1) on...

Wind turbines are typically classified as Horizontal Axis Turbines (HAWT) or Vertical (VAWT). VAWT has a superior ability to accelerate from rest rotation than HAWT, allowing it rotate the rotor even when wind speed is low; additionally, produced torque relatively high. Using Savonius helix one of numerous methods for enhancing performance. The effect number blades and blade twist angle on bott...