Tree structure probing is a significant basic part of target precision spraying. Orchard tree structure digital test system, which consists of three components, is designed by using the ultrasonic sensors. The conveying platform is for fixing and precisely moving the sensor which is used for probing the tree profile. The lower computer can process the test data and communicate with upper comput...

recently, increased growth of the population and insufficiency of infrastructures have expedited vertical development of cities, with the outcome of which being residence in such high-rise  complexes and creation of spiritless, dull masses which lack the prerequisites of making a permanent relationship with their residents, provoke high-level alienations, and dilute one’s attachment to his/her ...

15. Dillon JC, Weyman AE, Feigenbaum H, Eggleton RC, Johnston K: Cross-sectional echocardiographic examination of the interatrial septum. Circulation 55: 115, 1977 16. Lieppe W, Scallion R, Behar VS, Kisslo JA: Two-dimensional echocardiographic findings in atrial septal defect. Circulation 56: 447, 1977 17. Hagler DJ, Tajik AJ, Seward JB, Mair DD, Ritter DG: Realtime wide-angle sector echocardi...

A study was undertaken to determine if meadow voles, Microtus pennsylvanicus, use habitats adjacent to apple orchards. Considerations were given to how extensively these areas were used, if at all, and if a bulldozed strip would control their movements between the orchard and adjacent border habitats. Trapping and telemetry data showed that meadow voles do use the adjacent border habitats exten...

Let P be a set of n points in the plane, not all on a line. We show that if n is large then there are at least n/2 ordinary lines, that is to say lines passing through exactly two points of P . This confirms, for large n, a conjecture of Dirac and Motzkin. In fact we describe the exact extremisers for this problem, as well as all sets having fewer than n−C ordinary lines for some absolute const...

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measuring the perceived quality of residential environments is one of the fields of inquiry for housing environment researches. most of the data on the perceived quality of residential environments are restricted to existing and large cities experiences. however, little attention has been paid to new town residential complexes particularly in third world countries. residential and neighborhood ...