2,037 research outputs found

    Modular Decomposition and the Reconstruction Conjecture

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    We prove that a large family of graphs which are decomposable with respect to the modular decomposition can be reconstructed from their collection of vertex-deleted subgraphs.Comment: 9 pages, 2 figure

    Description of economic data collected with a random sample of commercial reef fish boats in the Florida Keys

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    This study summarizes the results of a survey designed to provide economic information about the financial status of commercial reef fish boats with homeports in the Florida Keys. A survey questionnaire was administered in the summer and fall of 1994 by interviewers in face-to-face meetings with owners or operators of randomly selected boats. Fishermen were asked for background information about themselves and their boats, their capital investments in boats and equipment, and about their average catches, revenues, and costs per trip for their two most important kinds of fishing trips during 1993 for species in the reef fish fishery. Respondents were characterized with regard to their dependence on the reef fish fishery as a source of household income. Boats were described in terms of their physical and financial characteristics. Different kinds of fishing trips were identified by the species that generated the greatest revenue. Trips were grouped into the following categories: yellowtail snapper (Ocyurus chrysurus); mutton snapper (Lutjanus analis), black grouper (Mycteroperca bonaci), or red grouper (Epinephelus morio); gray snapper (Lutjanus griseus); deeper water groupers and tilefishes; greater amberjack (Seriola dumerili); spiny lobster (Panulirus argus); king mackerel (Scomberomorus cavalla); and dolphin (Coryphaena hippurus). Average catches, revenues, routine trip costs, and net operating revenues per boat per trip and per boat per year were estimated for each category of fishing trips. In addition to its descriptive value, data collected during this study will aid in future examinations of the economic effects of various regulations on commercial reef fish fishermen.(PDF file contains 48 pages.

    The effect of modern English statute law upon contractual status of infants

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    Florida\u27s Omnibus AIDS Act of 1988

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    In response to the growing fears and sometimes irrational attitudes associated with the deadly disease AIDS, the 1988 Florida Legislature passed the Omnibus AIDS Act, affecting twelve substantive areas of law. In this Article, the author examines each of these areas, suggests the most likely interpretation the courts will accord the new provisions, and makes recommendations to correct oversights and inconsistencies in existing laws

    A comparative study of scholastic attainment of secondary school athletes during the on-sport seasons

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    Thesis (Ed.M.)--Boston University PLEASE NOTE: page 45 appears to be missing from the thesis. Our determination is that this is the result of misnumbering by the author, and no substantive content is actually missing. If you are able to determine otherwise, please contact us

    A Multiple Case Study Identifying Factors Influencing Church Attendance and Engagement with Unchurched and Dechurched Families

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    Many medium-sized churches experienced significant growth followed by years of declining attendance (Haskell et al., 2016). Many of them are in locations that could allow for significant growth. It seems as if some once growing churches no longer recognize how to best reach their communities and how to minister to the needs of the families making up their surrounding communities. The purpose of this multiple case study, a comparative analysis, is to identify factors that positively and negatively influence church attendance and engagement among unchurched and de-churched persons and families. At this stage in the research, regular attendance and engagement will be defined as at least twice monthly attendance at a local SBC church. Twenty-one full-time ministers and 31 members in Floridian SBC churches were selected as a cross-sectional systematic sampling to be studied in this research study. Information concerning the churches’ surrounding populations were derived from the United States Census, the churches’ county and city research population statistics, Lifeway Research, Barna Group, and surveys that have been conducted by the Florida State Baptist Association. This multiple case study, a qualitative, comparative analysis was done by interviews in small groups of five subjects or less. One-on-one interviews were conducted to clarify the findings from the small group interviews. It also involved gathering information from the church’s record databases. The researcher also spent significant time observing and recording habits, practices, expectations, rules, and rites of the subject churches

    The development of high resolution techniques for the surveillance of medicines.

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    There is a continuing requirement for the development of rapid and accurate methods for the identification and quantification of drugs particularly in generic pharmaceutical formulations and forensic samples. The use of surveillance methods, (post-market), is of interest to the pharmaceutical industry and regulatory authorities alike. The rise of generic and parallel imported drug products means there are many more sources of the ever increasing range of drug formulations. In the following work a non-buffered gradient UPLC system was considered as the basis of a rapid drug screening method. The system was originally developed by Gill et al for use in The Forensic Science Service, UK. Here the system has been developed further and tested as a surveillance technique on 'real' pharmaceutical samples. Gradient and isocratic versions of the system were set up on a modular Gilson HPLC (column: Inertsil ODS-2), (System 1) and on a Waters Millennium system (column: Waters Symmetry), (System 2). A database of gradient retention indices for 178 and 237 was obtained on Systems 1 and 2 respectively. System predictability and inter-laboratory transfer of data were investigated. A group of 28 barbiturates were run on System I. The system demonstrated good repeatability with retention index values showing coefficients of variation of less than 0.46% for gradient and 0.23% for isocratic runs. Retention values were correlated with a range of structural and physical parameters to test the selective behaviour of the system. Correlation with molecular connectivity values was poor as was the correlation with GLC retention index values (r = 0.45). Correlation of the HPLC retention indices with molar volume (r = 0.831) and Log P values (r = 0.891) suggested these were factors affecting retention. Excellent correlation between the experimental retention indices and calculated indices, derived by the addition of substituent component values to the barbituric acid core, was obtained. This demonstrated the internal consistency and predictability of the system. Using System 2, variations in eluent pH, column temperature and eluent composition were used to demonstrate the excellent robustness of the system. The repeatability of the 16 nitro-n-alkanes used to assign index values to the retention times of four acidic and four basic drugs, were not affected by the applied conditions. The mean standard deviation for these retention times was less than 0.1 minute. The variation in retention indices for the acidic and basic drugs was monitored with changing conditions. Gradient retention indices of 73 drugs run on System 1 common to those run on System 2 gave a correlation of r = 0.986. A data set of 237 drugs run on System 2 was used to generate a database of retention indices to demonstrate inter-laboratory transfer. These retention indices were obtained from the equations that described the correlations between System 2 retention indices and retention data given by nine other groups on various systems. System 2 utilised a photodiode array detector so that ultraviolet spectra, as well as retention index data could be used to identify a drug. A modern polymeric column that could tolerate high pH was investigated as an orthoganol technique. It was demonstrated that for some drugs a change in ionisation state led to a different retention index and UV spectrum. System 2 was used to test the surveillance procedure on sample supplied by a pharmaceutical exporter. Four powders for injection were considered. The active ingredient in each case was identified and quantified, the 95% confidence limits for the quantification fell within the BP limits for each drug. The decomposition of a new formulation of 5-aminolevulinic acid was monitored using the system demonstrating its flexibility for other analytical tasks. The use of Near Infrared techniques for rapid, non-destructive analysis of drug samples was considered. In particular the role of glass in the transflectance of light was investigated by reflecting incident light on glass vials containing mercury and then correcting the spectra of the drug in glass with the result
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