the chisel plow is one of the tillage implements utilized to carry out conservation tillage practices; therefore, it is valuable to pay more attention on the force requirement of this implement. to achieve this goal, a theoretical model was developed to calculate draft, specific draft, and drawbar power of a chisel plow. then, results obtained from the developed model were compared with the rep...

Draft tube of Francis type hydraulic turbine usually consists of: cone, elbow and diffuser. On the contrary, in some power stations an extra pipe should be added to the draft tube at the bottom of cone because of installation limitation. In this paper, this special case has been numerically studied. To this end CFD analysis was applied to simulate all parts of hydraulic turbine. A homogeneous m...

the international responsibility of state, constitute one of the most important questions in the field of the international law. with adoption of draft article about state responsibility by ilc (2001), the subject of human rights, remain. in the other word, is this draft, include any field of state responsibility and any conduct arising from private actors, or the subject of human rights remind...

This paper presents an architectural framework, which identiies the core services necessary for a secure Internet-based communication and information infrastructure. We show how these services can be realized using existing software packages and new technologies. Then, we turn to the development of security infrastructures using the rapid prototyping environment \Wafe" and the extensible Web br...

We describe our experience in designing object-oriented software for a sparse direct solver. We discuss , a library of sparse matrix ordering codes and Oblio, a code implementing the remaining steps in a direct solver. EEciencies comparable to procedural codes are obtained by careful implementations of eecient algorithms. We discuss the other goals of our design: managing complexity, simplicity...

performances of electronic and mechanical draft control systems on a mf399 tractor were the objectives of the study to be evaluated and compared under field conditions. hence, the effects of two draft control systems (mechanical and electronic) under four ground speed levels and three set values of draft levels on rear wheel slippage, fuel consumption, compressive force within the top link and ...