Plate Tectonics Essay Example | Topics and Well Written Essays - 750 words - 2

Plate Tectonics - Essay Example Helens, and the 2011 Fukushima earthquake in Japan. Prior to the description of the tectonic plate theory, scientists lacked any rational explanations for the formation of most of the features evident on the earths surface. Alfred Wegener figured out that the earth was a single mass of land in the past. In his book titled ‘origin of the continents and the oceans’, he highlighted that the earth consisted of land slabs that he named plates. These plates were of lithospheric origin, one of the layers of the earth. Since the earth had the capacity to rotate and had salient equatorial forces, the plates could exhibit motion in three different ways. The different motions included divergence, convergence, and transformation (Oberrecht, 2007). In a bid to support his theory, he highlighted potential evidence that could augment his thinking. Using the example of the evident fit between the South American and African continents, he highlighted that it was obvious that the movement of the plates had separated the two from each other. Moreover, geological evidence that includes the presence of similar rocks in different continents was an additional support to his theory. Fossil records also insinuated that the theory was true because of the observed climate. The Himalayas mountain belt forms the highest mountain array in the globe, registering an estimated 5000 meters in height. Mountain Everesthas been quoted as the most outstanding peak of the mountain belt, and owns a reputation as the highest peak in the globe. The formation of this mountain belt is attributable to the movement of plates according to the tectonic plate movement theory defined By Wegener (Oberrecht, 2007). The pacific ring of fire serves as evidence to the rigorous plate movement. This belt resulted from the convergence of plates in areas in close proximity to plate boundaries. During convergence, plates register a level of

Evaluation of usability of e-government services in Saudi Arabia Article

Evaluation of usability of e-government services in Saudi Arabia - Article Example Therefore, usability facilitates an avenue for relationship development since it creates a participatory form of governance (Reddick 2010, 484). Abanumy, Al-Badi & Mayhew (2005) in their study on evaluation of Saudi Arabia and Oman e-government websites accessibility examined accessibility guidelines, evaluation methods, and analysis tools. They together with Al-Wabil and Al-khalifa (n. d) in their study on a framework for integrating usability evaluation methods suggested that websites need considerable improvements to be accessible to all users. Andersen, Gronlund, Engers, and others (2011) in their work found out that broken links and poor designs are among many effects on poor usability of e-government (125). These have been leading to lower usage on websites hence reducing interaction. Reduced interaction has been witnessed to affect online business transactions which need redesigning if service delivery potential clients both locally and internationally has to be achieved (Gokmen 2010). A study by Katre (2007) on identifying available opportunities for further improvement explains the inadequate coverage of fundamental issues like user-centered design. This was well covered by the comparison done by Miguel, Pedrero and Teran (n. d) on advances in e-government usability in Spanish and Bolivian e-observatory initiative. They suggested that updated profile would be a good step towards establishing user problems on usability. This opinion backs up Al-Khalifa’s (2010, 238) opinion in hers heuristic evaluation of usability of e-government websites in Saudi Arabia. The study ascertained that among many usability problems, user satisfaction need to be tested since poor quality websites is directly proportional to bad usability. Eidaroos, Probets and Deanley (n. d) study on two Saudi Arabia websites and Aladwani & Palvia (2010) study on instruments for measuring usability