Because of the saying “Health is wealth”, more people become conscious about their health. The proponents decided to develop a mobile application on “food nutritional daily diet guide which is designed to direct people in selecting healthy meal choices” (Stowers, 2010). The objective of the study is the same as the researchers’ concern about the increasing number of unhealthy people especially the youth, that’s why the researchers want to help people to have a healthy diet. \nThe system is considered as effective in terms of its usability, functionality and reliability. The users were able to understand how to operate the system in just a short span of time, indicating that they found it user-friendly. And because of the system’s portability that it can be easily installed to their mobile phones without the hassle of connecting to the internet, the users can use the system to monitor their health status and food intake or just to check for a food’s nutritional foods. As a generalization, the system was found usable, functional and reliable in its technical aspects.
Measures of text similarity have been used for a long time in applications in natural language processing and related areas [1]. Text similarity has been also used for relevance feedback and text classification, word sense disambiguation, and more recently for extractive summarization and methods for automatic evaluation of machine translation [2] or text summarization [3]. \n\nThis paper aimed to present a new concept over the existing ones, through which proponents can identify the percentage of semantic similarity between documents to other documents. The system is a combination of any two, three or all the techniques mentioned here - NLP (Natural Language Processing), Statistics, Artificial Intelligence (Machine Learning), Linguistics and Web Technologies, Text Categorization, annotated large corpora etc[4]. \n\nThe system will compare up to 35 documents. It has the similarity calculations [5].The researcher used the Prototyping Model as a software engineering paradigm in developing the system. Prototyping is an easily modified extensible model (representation, simulation, or demonstration) of a planned software system, likely including its interface and input/output functionality [6].
Google Earth images were widely used to remotely study the natural phenomena such as wave diffraction. Breakwaters are built in Ras El-bar to protect the shore line against erosion and make the sea water suitable as harbours. Unfortunately through Google Earth, it became evident that the shape of the beach has changed behind the breakwaters. In this work, we use Huygen’s Fresnel Diffraction formula to study why the shore line has changed in this way. The intermediate space between the breakwaters act as slits which diffract the incoming water waves according the wavelength of the wave. Energy of water waves is maximum on the beach when the wavelength is much smaller than the width of the slits. But as the wavelength increase the effect of water waves lessens. Studying the images of the Ras El-bar beach can be used in developing better designs in the future which would eliminate the effects of water waves on the shape of shore.
Aim: 57Co radioisotope has recently been proposed as a hypothetical source for use in brachytherapy due to its high specific activity, appropriate half-life (272 days) and medium energy photons (114.17 keV on average). In this study, Task Group No. 43 dosimetric parameters were calculated and reported for a hypothetical 57Co source. Materials and methods: A hypothetical 57Co source was simulated in MCNPX, consisting of an active cylinder with 3.5 mm length and 0.6 mm radius encapsulated in a stainless steel capsule. Three photon energies were utilized (136 keV (10.68%), 122 keV (85.60%), 14 keV (9.16%)) for the 57Co source. Air kerma strength, dose rate constant, radial dose function, anisotropy function and isodose curves for the source were calculated and compared to the corresponding data for a 192Ir source. Results: The results were presented as tables and figures. Air kerma strength per 1 mCi activity for the 57Co source was 0.46 cGyh-1cm2mCi-1. Dose rate constant for the 57Co source was determined to be 1.215 cGyh-1U-1. Radial dose function for 57Co source has an increasing trend due to multiple scattering of low energy photons. Anisotropy function for 57Co source in various distances from the source is more isotropic than the 192Ir source. Conclusions: 57Co source has advantages over 192Ir due to its lower energy photons, longer half-life, higher dose rate constant and more isotropic anisotropic function. However, 192Ir source has a higher initial air kerma strength and more uniform radial dose function. These properties make 57Co a suitable source for use in brachytherapy applications.