Research abstract Introduction Vasectomy offers a permanent, safe, and worry-free choice in birth control. Vasectomy is a simple, safe and a relative operative procedure designed to make a man sterile, or unable to biologically father a child. All vasectomy techniques involve cutting or otherwise blocking both the left and right vas deferens, so that the man's ejaculate will no longer contain s...

This paper addresses the problem of determining the symmetries of a plane or space curve defined by a rational parametrization. We provide effective methods to compute the involution and rotation symmetries for the planar case. As for space curves, our method finds the involutions in all cases, and all the rotation symmetries in the particular case of Pythagorean-hodograph curves. Our algorithm...

Behavior simulation is an effective method to visualize the meaning of mechanical concepts and has been applied in many computer-aided education systems. These simulations are not useful, however, for a learner who has already formulated an erroneous equation. In order to help the learner to recognize and correct the error, simulating the erroneous equation is a promising method. In this paper,...

In this paper we present an effective method for computing certain real coefficients λn which appear in a criterion for the Riemann hypothesis proved by Xian-Jin Li. With the use of this method a sequence of two-thousand λn’s has been calculated. This sequence reveals a peculiar and unexpected behavior: it can be split into a strictly growing trend and some tiny oscillations superimposed on thi...

Remote monitoring service for elderly people is an effective method to support elderly people with safe. In this paper, we tackle to reveal the relationships between quality of elderly monitoring service and sensor reliability in remote monitoring service. To achieve the above goal, we propose four step methods, generalization by three-actor model, designing the algorithms of the three-actor an...

Compared to the error factors of the Linear Array Digital Sun Sensor (DSS), those of the Area Array DSS are complicated and methods used for error compensation are not valid or simple enough. This paper presents the main error factors of the Area Array DSS and proposes an effective method to compensate them. The procedure of error compensation of Area Array DSS includes three steps. First, the ...

An increase in radiation dose exposure In 2006, the average annual effective dose per individual in the US was 6.2 mSv1, a figure that has almost doubled over the last 25 years [1]. Approximately 50% of the dose currently received stems from background radiation [1], but varies depending on where you live (for example, in Australia dose levels are about half of levels in the US) [2]. The other ...

In this paper a general theory will be introduced that facilitates the detection of local boundaries in melodic surfaces. A model will be proposed that discovers points of maximum local change that allow a listener to identify potential perceptual boundaries. It is suggested that the Local Boundary Detection Model (LBDM) presents a more effective method for low-level segmentation in relation to...

A sensitivity bond graph, of the same structure as the system bond graph, is shown to provide a simple and effective method of generating sensitivity functions of use in optimisation. The approach is illustrated in the context of partially-known system parameter and state estimation.