Wednesday, February 19, 2020

Cross Cultural Awareness for Business Essay Example | Topics and Well Written Essays - 2000 words

Cross Cultural Awareness for Business - Essay Example Essentially, culture refers to the traditions, set of values, and norms or practices that tend to influence the ways in which individuals behave, think, make a judgement and also their perceptions within a group setting. The perception that employees may have about an organization tends to influence the way in which they tend to complete organizational tasks that may not be in line with the deadlines. This brings about the idea of cultural competence that refers to the ability for individuals within an organization to interact in an effective manner with people from different cultures. This may draw from their worldviews and the understanding of other people’s culture’s and also being tolerant of them (French, 2010). Based on this overview, this essay will delve into the emic approach in understanding and managing people in the workplace that have cultural differences by referring to the works of two writers. The focus will be on the value of their contribution to cross-cultural managers and also refer to four countries in which this approach is applied. Ideally, the emic and etic approach is a form of field research performed with the aim of obtaining various viewpoints within a social group from with the observer’s perspective and also from that of the subject at hand. In much detail, the emic approach determines the way in which people from a locality think, they way that they perceive and explain things, the way they behave as per their rules and also the things that bring meaning to them. These approaches to to manage cross culture within the workplace were developed by Kenneth Pike in 1954 to which his suggestion was that when both of them integrate then this is likely to yield more positive results (Ritchey, 2011). The emic approach requires the examining of each culture in order to determine the way in which those applying this approach interpret certain observable facts. The emic approach is drawn from the phonemic term and the etic

Tuesday, February 4, 2020

EPI7005 Essay Example | Topics and Well Written Essays - 4000 words

EPI7005 - Essay Example Several methods have been used in the correction of geometric distortions in MRI diffusion weighted normally resulting from static magnetic field inhomogeneities. Such inhomogeneties may be as a result of some imperfection within the magnet or magnetic susceptibility spatial variation of the object that is being imaged (Christ, 2000, p. 78). The spatial variation is normally referred to as susceptibility artifacts. EPI applied in most of protocols used in diffusion weighted acquisition uses a homogenous static field. Such afield does not normally hold for MRI head. The distortion that comes out of this is significant enough to even exceed ten millimeters. Such artifacts come in the way of accurate diffusion images alignment with structural MRI and are considered obstacles to the head MRI joint analysis of structure and connectivity. Some of the methods used for correction of magnetic susceptibility distortions include the use of a filed map. However, such methods of applying field ma ps are not reliable and accurate hence do not result in reliable EPI alignment with structural images that correspond to it. The T2-weighted structural image approach that relies on EPI baseline image and still gives account of the susceptibility artifacts is the recommended approach (Edelman and Schmitt, 1994, p. 610) Question 1A Several parameters have to be reduced in order to optimize EPI image and they include: A. Reducing the time of echo train length: The longer the length of the echo train, the more time is required by the spin to gather phase error and also the greater the distortion witnessed. One of the ways of minimizing the total time of train length is by minimizing the echo spacing. The less the time taken by the frequency gradient in sampling the signal, the less the distortion that will be witnessed as shown in figure 1. The period for sampling is normally during the flat readout gradient portion unless there is ramp sampling. In FSE, the less the ESP or the echo sp acing, the less the blurring of the image. In EPI, minimizing the echo spacing also results in a reduction in the blurring as well as a reduction in geometric distortion. Figure 1. The sampling time and the read encoding gradient during normal gradient performance (McMahon, 2012) As the segmentation degree increases, the echo number acquired per rf excitation decreases. This in turn minimizes the geometric distortion as the phase error time of accumulation is reduced. Figure 2 below demonstrates a reduction in effective inter-echo spacing (McMahon, 2012). Gradients are from two varying excitations, interleaved and offset with respect to each other. Figure 3 shows geometric distortion reduction as the shot number increases. In areas with low inherent homogeneity like the sinuses, the geometric distortion can appear with a larger shots number. As the shots number increases beyond a given point, the distortion reduction becomes unnoticeable. Figure 5; demonstration of the reduction of geometric distortion as the number of shots is increased (McMahon, 2012) B. Reducing echo spacing; methods used to shorten echo spacing include: Ramp sampling Increasing the receiver bandwidth through achieving a stronger gradient Resolution reduction hence a reduction in the echoes train number Phase encoding collection in multiple sessions (segmented or multiple shot EPI) By using increased amplitudes or