Physical Sciences and Mathematics Commons^™

Software Validation Techniques : A Contrast Between Myers' And Hetzel's Techniques, Reyad I. Abukaker

Electronic Dissertations and Theses

This research work presents the contemporary testing methodologies of current state-of-the-art methodologies in software testing. Myers' and Hetzel's methodologies are the primary objectives of this research. The scope of this work is to contrast these two testing methodologies, through looking at their principles as well as their definitions of testing. The two definitions of testing differ substantially. Myers' philosophy deals with human psychology and economics as the primary factors in defining the test plans. Hetzel's philosophy is broad in that it looks at software testing in terms of "meeting requirements." However, Hetzel focuses toward "evaluating" and "measuring" a software system …

An Underwater Science And Resource Database Management System And Proposed Applications To Marine Geographic Information Systems, Ivar Babb

Marine Affairs Theses and Major Papers

The National Undersea Research Program (NURP) is a federally-funded program that provides scientists with modern in situ technology that allows them to conduct research that goes beyond the constraints of traditional oceanographic methodology. NURP is comprised of five regional centers that administer underwater science, and through the principal investigators that are supported generate a vast quantity of diverse data. This data and information bank consists of the following: raw environmental data, logistical data, locational data, information about the scientists, video and still photograph documentation, and publication information. This paper describes the theory behind the implementation of a Database Management System …

The Use Of Remote Sensing Techniques And Geographic Information Systems By Coastal Managers In Rhode Island, Margaret H. Sano

Marine Affairs Theses and Major Papers

Planners and managers must understand the physical and anthropogenic changes taking place within the coastal zone to provide effective management. Remote sensing techniques and Geographic Information Systems (GIS) are excellent tools for contributing data and analytical capabilities to identify possible conflicts within the coastal zone. This study examines the potential and actual use of these technologies by coastal managers within Rhode Island. Potential usage is discussed in terms of the range of data available and the feasibility of using the data for coastal problems. Also, GIS capabilities in Rhode Island are explored. Finally a survey designed to measure the actual …

Performance Analysis Of A Distributed File System, Meenakshi Mukhopadhyay

Dissertations and Theses

An important design goal of a distributed file system, a component of many distributed systems, is to provide UNIX file access semantics, e.g., the result of any write system call is visible by all processes as soon as the call completes. In a distributed environment, these semantics are difficult to implement because processes on different machines do not share kernel cache and data structures. Strong data consistency guarantees may be provided only at the expense of performance.

This work investigates the time costs paid by AFS 3.0, which uses a callback mechanism to provide consistency guarantees, and those paid by …