System analysis and design Article Example | Topics and Well Written Essays - 750 words

System analysis and design - Article Example On this basis, this paper focuses on analysis and critique of the functional and non-functional features of a sample information system via an account of petrol station sales management system. A water flow and entity relationship diagram used in the development of the proposed system has provided the basis of the whole analysis process (Shelly & Rosenblatt, 2012). The second phase, requirements specification, is clearly a very positive move in the strategic presentation of the system since it aided in ensuring that the right functional requirements were gathered. This information is highly fundamental in ensuring that this information system is efficient enough in performing the expected functionalities. The design process was about creation of graphical presentations of the targeted system. Implementation phase engrosses development of small independent modules of code that offered unique but related functionalities. In testing and integration, the individual modules were put together into one coherent component and then tested against the design diagrams. Lastly but certainly not the least, the operations and maintenance phase proved to be very important in the development of the Information system. Not only did this phase aid in delivering the final system but also played a huge in adding and removing features that had been spotted as erroneous (Shelly & Rosenblatt, 2012). It is vital to note that, although, the waterfall model offered a clear view and presentation of the system development process; it still delivered a considerable set of challenges. One of the most crucial challenges is that all the errors and omissions can only be rectified at the operations and maintenance phase (Shelly & Rosenblatt, 2012). For any system development process to be successful, users have to be widely involved in the whole development process. However, in this methodology (waterfall), users are only involved

Food Safety Management Essay Example | Topics and Well Written Essays - 2500 words

Food Safety Management - Essay Example Botulism intoxication can result in death, which most often is caused by respiratory failure. The latent period is typically 12-36 hours but can range from 6 hours to 10 days. Stringent hygienic procedures while cooking and canning are recommended for keeping the disease at bay. In this case of food-borne botulism was termed as a clinically compatible illness in a village resident after laboratory confirmation of botulism or a history of eating the same food as previous botulism cases. It was found that 14 persons in the village had eaten fermented beaver tail and paw on January 17. Almost 20 hours after consuming these items, three of the 14 people developed symptoms suggestive of botulism, including dry mouth, blurry vision, and general weakness. Two patients developed respiratory failure and required intubations and mechanical ventilation. Two patients recovered without any further complication. The third one required tracheotomy tube placement and mechanical ventilation for one month. This patient had also been hospitalized with botulism in 1997. Of the other 11 infected persons, four reported minor symptoms compatible with botulism, including dry mouth and nausea, and were admitted to a hospital for overnight observation. One of them was hospitalized for 10 days with persistent ileus. The remaining seven were kept under observation for 48 hours. The clinical specimens from the 14 infected persons were tested... Six hours after the onset of symptoms, the three patients were administered with A/B and E botulism antitoxin. Two patients recovered without any further complication. The third one required tracheotomy tube placement and mechanical ventilation for one month. This patient had also been hospitalized with botulism in 1997. Of the other 11 infected persons, four reported minor symptoms compatible with botulism, including dry mouth and nausea, and were admitted to a hospital for overnight observation. One of them was hospitalized for 10 days with persistent ileus. The remaining seven were kept under observation for 48 hours. The clinical specimens from the 14 infected persons were tested for botulinum toxin at CDC. Type E toxin was detected in serum specimens from two of the ICU patients and in stool from the third. Despite minor symptoms, the other 11 persons had no toxin found in specimens and were not considered laboratory-confirmed cases. The same toxin was also found in the three beaver paws tested from the implicated meal. Beaver is hunted in southwest Alaska, and certain parts are often fermented and are eaten later. In this outbreak, the tail and paws had been wrapped in a paper rice sack and had been stored for up to three months in a patient's house before consumption. Some of the beaver tail and paw had been added to the sack as recently as 1 week before it was eaten. The severity of the case was low. The number of people infected was less and proper treatment was immediately administered to them. Out of the the 14 infected persons only three had to be hospitalized, rest eleven were discharged after being kept under observation for 48 hours. There were no causalities in the outbreak and it was brought under control in