Domain-specific modelling has proved its worth for improving development speed and dependability of applications. By raising the level of abstraction away from the code and towards the structure and behaviour of an application, it also offers good possibilities for generating the same application from the same models, but for a wide variety of client platforms. This paper examines one example o...

drafts of major primary tillage implements were measured in a clay loam soil using a tension loadcell. implements consisted of a moldboard, a disk and a chisel plow each equipped with one tillage unit. a photoelectric speed sensor was used for actual forward speed measurements. during the study, the effects of forward speed and tillage depth on draft requirements were investigated. a general re...

Dynamic Analysis of an axially moving cable with time dependent tension and velocity isstudied in this paper. Tension force and the moving speed are assumed to be harmonic.It is found that there exists a specific value of speed in which natural frequency of the system approacheszero. This specific speed for such a critical condition is called critical speed and it will be proved thatincreasing ...

introduction recently, employment of rotary tillers has been expanded in gardens and small farms, especially in the northern of iran. however using the l-shaped blades in the conventional rotary tillers have some problems such as severe vibration problems, weeds stucking around the blades, forming the plow pan and lower performance due to the less powers of such small rototillers. therefore in ...

High-speed centrifugal pumps with low specific speed have the characteristics of a small flowrate, high head, and being compact light weight, making them promising candidates for applications in thermal management aerospace electronic devices. The energy loss pump is critical complex due to large impeller diameter, narrow long flow channel, outlet width. In this paper, an analysis method based ...

in recent years several studies have been done in the field of laminar flame speed. one of the important characteristics of the combustion is the laminar flame speed. in this study, the effects of co2 and n2 on the laminar flame speed of natural gas and gasoline fuel mixture have been investigated. schlieren method has been used in this study. experiments were carried out at pressure of 1 bar a...