Bioassessment can be performed through several methods and with different bioindicators. In Canadian Areas of Concern (AOC), fishes are used as a proxy for site condition. The Index of Biotic Integrity (IBI), a multimetric index for biological assessment, has been applied to fish data across Canadian AOCs to detect recovery. Previous studies, however, have indicated the IBI is not sensitive to assemblage changes characteristic of later stages of recovery. In this study, the IBI and multivariate methods were applied to data from two AOCs, the Detroit and St. Clair rivers. The results revealed that the IBI is susceptible to species substitutions within metric categories. The substitutions produced high variability within narrative ranks and rendered the IBI insensitive to changes, detected by multivariate methods, in the fish assemblage. In the absence of reference sites, the multivariate analyses were supplemented with the development of a reference condition based on best professional judgment.

Bioassessment can be performed through several methods and with different bioindicators. In Canadian Areas of Concern (AOC), fishes are used as a proxy for site condition. The Index of Biotic Integrity (IBI), a multimetric index for biological assessment, has been applied to fish data across Canadian AOCs to detect recovery. Previous studies, however, have indicated the IBI is not sensitive to assemblage changes characteristic of later stages of recovery. In this study, the IBI and multivariate methods were applied to data from two AOCs, the Detroit and St. Clair rivers. The results revealed that the IBI is susceptible to species substitutions within metric categories. The substitutions produced high variability within narrative ranks and rendered the IBI insensitive to changes, detected by multivariate methods, in the fish assemblage. In the absence of reference sites, the multivariate analyses were supplemented with the development of a reference condition based on best professional judgment.

In the current era of digital world, the amount of sensitive data produced by many organizations is outpacing their storage ability. The management of such huge amount of data is quite expensive due to the requirements of high storage capacity and qualified personnel. Storage-as-a-Service (SaaS) offered by cloud service providers (CSPs) is a paid facility that enables organizations to outsource their data to be stored on remote servers. Thus, SaaS reduces the maintenance cost and mitigates the burden of large local data storage at the organization's end. For an increased level of scalability, availability and durability, some customers may want their data to be replicated on multiple servers across multiple data centers. The more copies the CSP is asked to store, the more fees the customers are charged. Therefore, customers need to have a strong guarantee that the CSP is storing all data copies that are agreed upon in the service contract, and these copies remain intact. In this thesis we address the problem of creating multiple copies of a data file and verifying those copies stored on untrusted cloud servers. We propose a pairing-based provable multi-copy data possession (PB-PMDP) scheme, which provides an evidence that all outsourced copies are actually stored and remain intact. Moreover, it allows authorized users (i.e., those who have the right to access the owner's file) to seamlessly access the file copies stored by the CSP, and supports public verifiability. We then direct our study to the dynamic behavior of outsourced data, where the data owner is capable of not only archiving and accessing the data copies stored by the CSP, but also updating and scaling (using block operations: modification, insertion, deletion, and append) these copies on the remote servers. We propose a new map-based provable multi-copy dynamic data possession (MB-PMDDP) scheme that verifies the intactness and consistency of outsourced dynamic multiple data copies. To the best of our knowledge, the proposed scheme is the first to verify the integrity of multiple copies of dynamic data over untrusted cloud servers. As a complementary line of research, we consider protecting the CSP from a dishonest owner, who attempts to get illegal compensations by falsely claiming data corruption over cloud servers. We propose a new cloud-based storage scheme that allows the data owner to benefit from the facilities offered by the CSP and enables mutual trust between them. In addition, the proposed scheme ensures that authorized users receive the latest version of the outsourced data, and enables the owner to grant or revoke access to the data stored by cloud servers.

Thousands of hectares of wetlands are being destroyed by oil sands mining in Alberta, and the industry must undertake wetland reclamation to compensate for these losses. Wetland vegetation has developed at some previously mined sites, however reclamation is thus far exploratory, and limited in extent. To inform reclamation practices and assist compliance monitoring I examined vegetation communities in 25 natural boreal wetlands and 20 oil sands reclaimed wetlands, developed a Vegetation-based Index of Biological Integrity (vIBI) to quantify the ecological health of wetlands, and identified possible physical and chemical barriers to reclamation. The vIBI identified 6 reclaimed wetlands in fair to good health, however reclaimed wetlands have different vegetation communities, do not produce the same level of aboveground biomass, and have lower levels of sediment nutrients than natural wetlands. To reclaim healthy wetlands, planning should focus on establishing appropriate species, and alleviate nutrient and sediment deficiencies. / Ecology

[The Mariner's Chart]I've chosen to use the metaphor of the mariners chart to highlight the characteristics that are the essential elements of this study. This metaphor also sits comfortably with the Torres Strait Islander people, both historically and contemporaneously. The document '(IN) THE BEGINNING: The mariner’s chart to the folio’, represents the chart which enables readers ofthis study to 'navigate' their individual progress through the study in ways that reflect the reader's motivation/s. As with most maritime voyages, destinations can be reached via a number of different routes. These routes will be partially determined by motivations including tides, winds, directness, the skill of the navigator and the whim of the skipper. These motivations also apply to any reading of this study. The essential starting point will bedetermined initially by reference to the chart. Being made aware of the elements of the folio (logs of the various voyages) will influence where the reader goes from there; in other words, what folio elements (logs of the voyages) the reader will go to first and the order they chooseto follow, subsequent to that. There is no necessary order in which the logs of the various voyages should be read, following the initial reference to the 'chart'.The mariner's chart identifies low water marks, channel markers, reefs, sandbanks, and unseen obstacles. These represent only a handful of the dangers the reader (mariner) will face on the voyage. Likewise the study has its share of 'dangers', both seen and unseen. Thewhole nature of the study is in a sense, dangerous. I anticipate that any reading of the study will necessarily reflect the idiosyncrasies of the reader, so that the conclusions that I have reached, represent only one view of the data. The identification of the data itself reflects a level of interpretation that is also very personal, highlighting the reality that others(readers/mariners) may see greater significance in aspects of the recorded data that the author has not. The log of the voyage, My Journey An Autobiographical Narrative, clearly identifies a very personal journey or series of journeys, all of which reflect a range of reefs and sandbars that the author has sometimes been stranded on, between tides, giving time for reflection on actions that have either proven unsuccessful or are cause for quietcontemplation. Each of the folio elements reflects this metaphoric mix of danger and clear passage, in many different ways and at many different levels, inviting the individual and equally legitimate reactions of each reader.Whilst Torres Strait Islanders historically navigated by the stars and the seasons today, electronic navigation charts have tended to replace these important and culturally significant practices. Torres Strait people have metaphorically experienced being stranded on reefs andshoals and being wrecked, especially in terms of the education processes they have been exposed to, by virtue of this cultural shift. The process, educationally, of replacing the reliable historic (navigation) practices of Torres Strait Islanders with contemporary, western(navigation charts) practices has frequently resulted in confusion, frustration and a failure to produce successful educational outcomes for Torres Strait Islanders - clear passage to the future. The reasons for this situation are explored in greater depth in this study.With these explanations in mind then, the reader is invited to engage on their own voyage through this study.

This project explores the challenges of managing in times of organisational stress. The New Zealand department of corrections is facing multiple pressures which are only set to increase including: financial strictures as government funding is being highly scrutinised, greater demand as inmate numbers increase, and reduced capabilities as many staff lack experience. A grounded theory in a case study setting (three prisons in Christchurch, New Zealand) was undertaken utilising repertory grid and semi-structured interviews to explore the ways in which managers cope during times of such stress. A total of 11 interviews were conducted. In the case, I considered what differentiates effective managers from those who appear less able to cope. It was found that effective managers are those who are able to build trust and respect with their constituents. When staff trust and respect their managers it is because they feel valued and perceive their manager to be on their side; they are then willing to reciprocate. Positive regard, demonstrations of support, and leading by example were found to be key factors leading to being perceived as being on the staff’s side. The links between trust, respect and performance along with the valuation of staff wellbeing were examined.

Thesis (Ph.D.)--Ohio University, June, 2009. / Title from PDF t.p. Includes bibliographical references.

Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, March 2010. / Thesis Advisor(s): Buddenberg, Rex. Second Reader: Housel, Thomas. "March 2010." Description based on title screen as viewed on April 27, 2010. Author(s) subject terms: Public key infrastructure, user agent, authenticity, confidentiality, integrity. Includes bibliographical references (p. 47-48). Also available in print.

Thesis (MA)--University of Stellenbosch, 2005. / Bibliography. Also available via the Internet.

Thesis (M. Sc.)--University of Hong Kong, 2006.