Development of a process simulator using object oriented programming: Information modeling and program structure

Object Oriented Programming Languages (OOPL) offer the flexibility of language extension to the specific application of interest. The development effort required for process simulators can be greatly reduced if we extend OOPL with process simulator specific objects and use them for simulation. Design of objects is the most important aspect of development in using OOPL. But OOPL do not provide a methodology to aid in object design. The objects to be designed should reflect the nature of the application at hand.;The objective of this work is to develop an object oriented process simulator to illustrate the benefit of using OOPL in process simulation. An object design criteria is established, an analysis of the object model is performed, and a steady state process simulator using sequential and simultaneous approaches is developed using C++ as the underlying implementation language.;It is found that the object model has to be extended with operational behavior to effectively represent the process simulation information, the development effort is greatly reduced by using the object oriented approach for the process simulator, OOPL can act as common platforms for integrating process engineering activities, and C++ can be effectively used as an implementation language for object oriented process simulation.;Further work is necessary to extend the simulator with dynamic simulation capabilities and to make the simulator interactive and user friendly by developing a graphic interface

Integrated persistent object manager (IPOM) : a model to support persistence and data sharing in object-oriented database systems

Computer Scienc

Impact of Boko Haram insurgency on human security in Nigeria

The spate of violent attacks by Boko Haram in recent times which has been  characterized by the abduction and killing of people; destruction of houses, schools, health care centres, churches, mosques and farms has plunged the country into a chronic state of insecurity. The basics of food, health, shelter, education and  protection which constitute security to the human individual primarily, has therefore been threatened by the Boko Haram insurgency. The paper therefore examines the threats of Boko Haram insurgency on human security in Nigeria. Findings reveal that insurgency has claimed a lot of lives and property; compounded the food and nutrition insecurity situation in the country; aided the spread of infectious diseases; denied millions of children and youths access to education; increased the number of internally displaced persons with dire need of shelter and has caused people to live  in constant fear and anxiety. This paper concludes that Boko Haram Insurgency has negative impact on human security, and recommends that counter-insurgency will be effective only when issues of poverty, corruption and bad governance are effectively addressed.Keywords: Boko Haram, Insurgency, Human Security, Violence, Nigeri

An Object memory for an object-oriented database management system

Ankara : The Department of Computer Engineering and Information Sciences and the Institute of Engineering and Sciences of Bilkent Univ. , 1988.Thesis (Master's) -- Bilkent University), 1988.Includes bibliographical references leaves 86-89.Object-oriented paradigm is an approach that can be applied in various areas of computing. In this approach, each entity is represented by an object which captures the state and the behaviour of the entity. In this thesis, a focused survey of object-oriented paradigm in general and object-oriented database management systems in particular has been carried out and an object memory module is designed and implemented for an object-oriented database management system prototype. The object memory module handles the representation, access and manipulation of objects in the system and provides the primitive functions that are necessary in the development of the prototype.Kesim, F NihanM.S

An object-oriented view of backend databases in a mobile environment for navy and marine corps applications

A Database Management System (DBMS) is system software for managing a large amount of data in secondary memory. The standard DBMS used today in both industry and the military is the Relational DBMS (RDBMS). The RDBMS is based upon the relational paradigm, whereas modern software development technologies that interact with the RDBMS are based upon the object-oriented paradigm. This difference in paradigms presents a conceptual mismatch which greatly reduces programmer and developer productivity. Additionally, wireless handheld devices have become ubiquitous both in the military and in the community at large. These handheld devices provide a convenient means of information access. To date, the military has failed to capitalize on the use of handheld devices as a convenient means of information access with respect to the large amounts of information stored in its databases. This thesis investigates various database application architectures and proposes an architecture that will not only overcome the conceptual mismatch between the relational and object-oriented paradigms, but also allows handheld device access to the database. A proof-of-concept prototype database application that provides handheld device access to a military personnel database is built to show the viability of the proposed architecture.http://archive.org/details/anobjectoriented109452577Approved for public release; distribution is unlimited

35. Improving Activity Diagramming with UML 2.0

This paper identifies four problems with UML activity diagramming that have implications for teaching and practice. Solutions to each of the four problems are provided. The proposed solutions are borrowed from existing modeling paradigms, specifically structured systems analysis and design methods (SSAD). We did not see the need to reinvent solutions when adequate remedies exist. The proposed solutions help to improve the syntax, semantics, and consistency of activity diagramming in UML

Integration of Object Oriented Host Program with Network DBMS

AbstractSeveral mapping techniques are in use for the storage of objects in Network Database Management System (NDBMS). Though there is a generation gap between the evolution of NDBMS and Object Oriented Technology (OOT), both are either analogous or complementary to each other. Therefore the mapping technique to map class diagram onto Bachman diagram has been evolved. Host program accessing the database and accessing the independent data file may differ in the number and use of attributes and classes. Hence along with the mapping techniques, the implementation subsets of structural and behavioral aspect are to be considered. Moreover, the persistent closure (connected dependent objects) is to be maintained during the storage and retrieval of the objects. Thus, the mere mapping technique is not sufficient for the storage and retrieval of objects as the host program has to establish the relevancy of the database with respect to its authorized subset. In this paper, we have made an attempt to develop a guidelines to assist the programmer to determine the closure of every mapped class and accordingly to design the persistent constructor and loader for the storage and retrieval of the objects respectively. The persistent closure is determined by the type of interrelationship (degree of cohesion) between objects (classes) is identified. For illustrative portion of the class diagram depicting the business process and its implementation in the NDBMS, a table containing the implemented classes with their connected classes is prepared, and then the guidelines are proposed to integrate object oriented host program to access the database through NDBMS

Storage management and indexing in object-oriented database management systems

Ankara : The Department of Computer Engineering and Information Sciences and the Institute of Engineering and Sciences of Bilkent Univ., 1990.Thesis (Master's) -- Bilkent University, 1990.Includes bibliographical references leaves 76-77Storage management and indexing methods used in existing conventional database management systems are not appropriate for the object-oriented database management systems due to the distinctive features of the later systems. A model for storage management suitable for object- oriented database management systems is proposed in this thesis. It supports object identity, multiple inheritance, composite objects, a fine degree of granularity and schema evolution. An index provides fast access to data stored in files at the price of using additional storage space and an overhead in update operations. Work has been carried out on indexing and an indexing method for the object-oriented database systems is proposed. Identity and equality indexes are treated. Object identity and information hiding are provided. Schema changes are handled without affecting existing indexes. It is general enough to be applicable to most existing object-oriented database systems. The mapping of the proposed storage and indexing approaches into a relational database scheme is also presented.Al-Hajj, RedaM.S

Object Oriented Database Management Systems-Concepts, Advantages, Limitations and Comparative Study with Relational Database Management Systems

Object Oriented Databases stores data in the form of objects. An Object is something uniquely identifiable which models a real world entity and has got state and behaviour. In Object Oriented based Databases capabilities of Object based paradigm for Programming and databases are combined due remove the limitations of Relational databases and on the demand of some advanced applications. In this paper, need of Object database, approaches for Object database implementation, requirements for database to an Object database, Perspectives of Object database, architecture approaches for Object databases, the achievements and weakness of Object Databases and comparison with relational database are discussed

A real-time distributed analysis automation for hurricane surface wind observations

From 1993 until 1999, the Hurricane Research Division of the National Oceanic and Atmospheric Administration (NOAA) produced real-time analyses of surface wind observations to help determine a storm\u27s wind intensity and extent. Limitations of the real-time analysis system included platform and filesystem dependency, lacking data integrity and feasibility for Internet deployment. In 2000, a new system was developed, built upon a Java prototype of a quality control graphical client interface for wind observations and an object-relational database. The objective was to integrate them in a distributed object approach with the legacy code responsible for the actual real-time wind analysis and image product generation. Common Object Request Broker Architecture (CORBA) was evaluated, but Java Remote Method Invocation (AMI) offered important advantages in terms of reuse and deployment. Even more substantial, though, were the efforts towards object-oriented redesign, implementation and testing of the quality control interface and its database performance interaction. As a result, a full-featured application can now be launched from the Web, potentially accessible by tropical cyclone forecast and warning centers worldwide