Software reliability has not kept pace with computing hardware. Despite the use reliability improvement techniques and methods, faults remain that lead to software errors and failures. Runtime monitoring can improve software reliability by detecting certain errors before failures occur. Monitoring is also useful for online and electronic services, where resource management directly impacts reliability and quality. For example, resource ownership errors can accumulate over time (e. g. , as resource leaks) and result in software aging. Early detection of errors allows more time for corrective action before failures or service outages occur. In addition, the ability to monitor individual software concerns, such as application resource ownership structure, can help support autonomic computing for self-healing, self-adapting and self-optimizing software. <br /><br /> This thesis introduces <em>ResOwn</em> - an application resource ownership ontology for interactive session-oriented services. ResOwn provides software monitoring with enriched concepts of application resource ownership borrowed from real-world legal and ownership ontologies. ResOwn is formally defined in OWL-DL (Web Ontology Language Description Logic), verified using an off-the-shelf reasoner, and tested using the call processing software for a small <em>private branch exchange (PBX)</em>. The ResOwn Prime Directive states that every object in an operational software system is a resource, an owner, or both simultaneously. Resources produce benefits. Beneficiary owners may receive resource benefits. Nonbeneficiary owners may only manage resources. This approach distinguishes resource ownership use from management and supports the ability to detect when a resource's role-based runtime capacity has been exceeded. <br /><br /> This thesis also presents a greybox approach to concern-specific, dynamic software structure monitoring including a monitor architecture, greybox interpreter, and algorithms for deriving monitoring model from a monitored target's formal specifications. The target's requirements and design are assumed to be specified in SDL, a formalism based on communicating extended finite state machines. Greybox abstraction, applicable to both behavior and structure, provides direction on what parts, and how much of the target to instrument, and what types of resource errors to detect. <br /><br /> The approach was manually evaluated using a number of resource allocation and ownership scenarios. These scenarios were obtained by collecting actual call traces from an instrumented PBX. The results of an analytical evaluation of ResOwn and the monitoring approach are presented in a discussion of key advantages and known limitations. Conclusions and recommended future work are discussed at the end of the thesis.

Software reliability has not kept pace with computing hardware. Despite the use reliability improvement techniques and methods, faults remain that lead to software errors and failures. Runtime monitoring can improve software reliability by detecting certain errors before failures occur. Monitoring is also useful for online and electronic services, where resource management directly impacts reliability and quality. For example, resource ownership errors can accumulate over time (e. g. , as resource leaks) and result in software aging. Early detection of errors allows more time for corrective action before failures or service outages occur. In addition, the ability to monitor individual software concerns, such as application resource ownership structure, can help support autonomic computing for self-healing, self-adapting and self-optimizing software. <br /><br /> This thesis introduces <em>ResOwn</em> - an application resource ownership ontology for interactive session-oriented services. ResOwn provides software monitoring with enriched concepts of application resource ownership borrowed from real-world legal and ownership ontologies. ResOwn is formally defined in OWL-DL (Web Ontology Language Description Logic), verified using an off-the-shelf reasoner, and tested using the call processing software for a small <em>private branch exchange (PBX)</em>. The ResOwn Prime Directive states that every object in an operational software system is a resource, an owner, or both simultaneously. Resources produce benefits. Beneficiary owners may receive resource benefits. Nonbeneficiary owners may only manage resources. This approach distinguishes resource ownership use from management and supports the ability to detect when a resource's role-based runtime capacity has been exceeded. <br /><br /> This thesis also presents a greybox approach to concern-specific, dynamic software structure monitoring including a monitor architecture, greybox interpreter, and algorithms for deriving monitoring model from a monitored target's formal specifications. The target's requirements and design are assumed to be specified in SDL, a formalism based on communicating extended finite state machines. Greybox abstraction, applicable to both behavior and structure, provides direction on what parts, and how much of the target to instrument, and what types of resource errors to detect. <br /><br /> The approach was manually evaluated using a number of resource allocation and ownership scenarios. These scenarios were obtained by collecting actual call traces from an instrumented PBX. The results of an analytical evaluation of ResOwn and the monitoring approach are presented in a discussion of key advantages and known limitations. Conclusions and recommended future work are discussed at the end of the thesis.

<p>The goal of this study is to examine the environmental impacts of oil and gas exploration and production (E&P), the roles of legislation, and the environmental management strategies in the petroleum industry with respect to the Niger Delta region of Nigeria. The study seeks to suggest sustainable solutions to the endemic economic, social, and environmental problems associated with oil and gas E&P in the region. The focus is on the environmental control in the upstream (E&P) operations of the oil and gas industry as it affects the Niger Delta region of Nigeria with a view to proffering sustainable solutions.</p><p>The heavily polluting activities and environmental impacts of the upstream oil and gas operations in the Niger Delta have over the years taken a routine dimension and are endemic as a result of inadequate environmental legislations and ineffective enforcements. Sequel to these environmental impacts is militancy, adoption of expatriates, communal conflicts, inter-ethnic conflicts, human right abuses, restiveness and other social vices as the study reveals. These social and environmental impacts of oil and gas activities in this region bring impoverishment, abject poverty, hunger, squalor, birth disease, gene mutation, and death while exposing inhabitants of the region to afflictions and diseases as the study explicitly documents.</p><p>The study also reveals that the persistence rate of unrest, restiveness, militancy and other social vices is as a result of non-dialogue status between the different stakeholders, lack of infrastructural development, lack of basic amenities, high rate of unemployment, poor policy construct, federalized mineral right / resource ownership structure, and the monopolistic nature of Nigeria’s foreign exchange earning in petroleum resources.</p><p>In this dissertation, both proactive and corrective measures to curb the menace of the social, economic and environmental impacts of oil and gas exploration & production operations in Nigeria are presented and discussed with suggestions to sustainable solution and development, better environmental legislation, and better resource policy construct while advocating for good industrial practices in the petroleum industry with emphasis on the Niger Delta region of Nigeria.</p>

The goal of this study is to examine the environmental impacts of oil and gas exploration and production (E&amp;P), the roles of legislation, and the environmental management strategies in the petroleum industry with respect to the Niger Delta region of Nigeria. The study seeks to suggest sustainable solutions to the endemic economic, social, and environmental problems associated with oil and gas E&amp;P in the region. The focus is on the environmental control in the upstream (E&amp;P) operations of the oil and gas industry as it affects the Niger Delta region of Nigeria with a view to proffering sustainable solutions. The heavily polluting activities and environmental impacts of the upstream oil and gas operations in the Niger Delta have over the years taken a routine dimension and are endemic as a result of inadequate environmental legislations and ineffective enforcements. Sequel to these environmental impacts is militancy, adoption of expatriates, communal conflicts, inter-ethnic conflicts, human right abuses, restiveness and other social vices as the study reveals. These social and environmental impacts of oil and gas activities in this region bring impoverishment, abject poverty, hunger, squalor, birth disease, gene mutation, and death while exposing inhabitants of the region to afflictions and diseases as the study explicitly documents. The study also reveals that the persistence rate of unrest, restiveness, militancy and other social vices is as a result of non-dialogue status between the different stakeholders, lack of infrastructural development, lack of basic amenities, high rate of unemployment, poor policy construct, federalized mineral right / resource ownership structure, and the monopolistic nature of Nigeria’s foreign exchange earning in petroleum resources. In this dissertation, both proactive and corrective measures to curb the menace of the social, economic and environmental impacts of oil and gas exploration &amp; production operations in Nigeria are presented and discussed with suggestions to sustainable solution and development, better environmental legislation, and better resource policy construct while advocating for good industrial practices in the petroleum industry with emphasis on the Niger Delta region of Nigeria.