To alleviate the mass-scaling issues associated with conventional upwind rotors of extreme-scale wind turbines (≥10MW), a morphing downwind-aligned rotor (MoDaR) concept is proposed herein. The concept employs a downwind rotor with blades whose elements are stiff (no intentional flexibility) but with hub-joints that can be unlocked to allow for momentfree downwind alignment. Aligning the combin...

In this paper, new attitude maneuver using non-holonomic turn is proposed. The essence of this turn is characterized by an under-actuated system which does not have a direct torque device around the intended axis is made through what we call a coning motion. It is well known that falling cat motion utilizes non-holonomic turn. This paper shows the motion structure interpretation, in which a ver...

Seventy-four patients with proved spontaneous subarachnoid haemorrhage were studied. Sixty-four underwent computed tomography and 55 underwent lumbar puncture. Seven cases deteriorated dramatically after lumbar puncture, six of these showing evidence of cerebral dislocation on further investigation. Four of the seven had not undergone computed tomography and three underwent computed tomography ...

Objectives. To highlight the importance of early diagnosis of colloid cyst of the third ventricle and its early management. Clinical Presentation and Intervention. This is a young lady who presented with sudden onset headache. She attended a local clinic and also her area hospital. Her diagnosis was delayed several hours due to a diagnostic dilemma initially. No surgical intervention was tried ...

Recent results have confirmed that the global rigidity of bar and joint frameworks on a graph G is a generic property in Euclidean spaces of all dimensions. While this creates the possibility of a combinatorial characterization of genericaly globally rigid graphs, the only current combinatorial characterizations, which are known to be deterministically computable in polynomial time, are in dime...

Laura Island, which is located about 50 km away from downtown, is a source of water supply in Majuro atoll, which is the capital of the Republic of the Marshall Islands. Low and flat Majuro atoll has neither river nor lake. It is very important for Majuro atoll to ensure the conservation of its water resources. However, upconing, which is the process of partial rising of the freshwater-saltwate...