As instruction Case Study Example | Topics and Well Written Essays - 2500 words

As instruction - Case Study Example SirsiDynix has worked on almost all types of library systems which include government, public and academic (Vista Equity Partners, 2013). As mentioned above the library pays a fee to make use of the services provided by the software. Moreover the library is also charged for any maintenance work that is carried out on the system. Sirsi is used to perform a number of functions for the library which include circulations, online cataloging, keeping records of subscriptions and acquisitions of various books from different sources (Vista Equity Partners, 2013). The transaction processing system is broken down into a number of modules. Some of these modules collaborate with each other to accomplish various tasks. For example the circulation module and the cataloging module are connected to each other to help locate books when needed. To access the journal articles the library makes use of software known as link resolver that allows students and professors to access various journal articles. The link resolver module tries to determine if an institution owns a resource that the user is trying to access. If the institution does not own that resource the link resolver tries to determine if the institution has the rights to access that particular resource. Once verification is completed the link resolver redirects the user to the resource using a particular URL link (ExLibris SFX, 2012). The URL link resolver provides a scholar portal that connects the all the libraries of the regional universities and provides information on the journals available at a particular university library. Universities are allowed to borrow journals from each other without any additional charges. The headquarters of the portal are situated in University of Toronto. Orders at the library are recorded manually by the library staff. The faculty records all their academic requirements with the staff of the library these requirements include books, journals and any other resources that may be needed by the faculty. These requests are put in by the faculty using a form. Once all requests are made by the faculty the library draws up a budget for purchasing these resources. Each book is purchased from the vendor one at a time. Recently the library has started purchasing books online mainly from Amazon.com. Business process model for a library: Opportunities / Threats Opportunity/threat chart: Threat identified Issue Recommendations Dependency on the software Siri The system largely depends upon the software Siri. An error in any of the modules could halt operations Availability can be a problem Implement a Transaction Processing system as back up to handle all the processing that takes place at the library’s desk IMS by IBM can be implemented within the library system IMS provides high availability and can work with large volume of data Lapse in security Library systems are easy targets for hackers. Unauthorized access could extensively cause damage the data It could even t ake the library offline Install windows

Reliability and Validity Assignment Example | Topics and Well Written Essays - 250 words

Reliability and Validity - Assignment Example For the diagnosis to be termed accurate, the features identified have to be same every time if the test is to be termed reliable. This is measured by a correlation between the two test outcomes over all the participants. This method expresses the generalisability of the test scores over different test occasions by assessing stability of the test outcomes (Hempel, 2005). Hempel (2005) explains that this method of testing reliability varies with the type of tests, i.e. ability or traits and attitudes or states assessment. In both cases, repetitive responses based on previous memory is a high possibility thereby giving incorrect measures of reliability. Secondly, the traits tend to change with time, and this would depict low reliability measure, which is again incorrect (Garb, 2002). In such cases, the time period between the tests needs to be recorded appropriately in order to obtain accurate reliability measure. In case of validity, the test should be able to measure what is intended to be measured with minimum or no possibilities of change in behaviors. Reliability of the test decides the amount of correction and incorrect decisions that are made as an outcome of the test. Therefore, reliability is necessary for confirming validity. At the same time, validity of results obtained from this method is higher when the time gap is minimal; however, this minimum time varies with situation or behavior being