196,269 research outputs found
Socio-cultural determinants of criminal and anti-social behaviour of Agaba groups In Calabar Metropolis, Nigeria
No full textABSTRACT This paper explored the involvement and arrest of street boys (popularly called Agaba boys) in 19 criminal and anti-social behaviours. Using the General Strain Theory (GST) to guide discussion, the study administered questionnaires on 80 Agaba members drawn purposively from four groups in Calabar Metropolis. It equally held Focus Group Discussions (FGDs) with group leaders. Chi square statistical tool and multiple regressions were used in analysis. The results revealed differences in the four groups' involvements in the 19 criminal and anti-social behaviours that were tested. Socio-economic activities found in their residential areas were the major determinants of type of criminal and anti-social activities they specialized in. The study argues that socio-demographic backgrounds that the boys found themselves exerted significant effect on their subsequent behaviours. It suggests the creation of a Public Private Partnership (PPP) initiative that would deliberately create employments which require low and manual skills that could help in taking most of the boys from the streets
Human papillomaviruses and their association with squamous cell carcinoma of the conjunctiva
No full textSquamous cell carcinoma of the conjunctiva (SCCC), hitherto a rare cancer, has increased manyfold since the advent of HIV/AIDS. Solar ultra violet radiation (UV) may also be a risk factor for the disease. The increased incidence has led to the hypothesis of an infective agent as a risk factor, especially infections with human papillomaviruses (HPV) types 16 and 18. The main purpose of this thesis was to study the association between these factors and SCCC.Pilot studies I and II. Aims: to assess the feasibility and test methods for a larger case control study in Uganda; to investigate the presence of HPV in conjunctival tissue using broad spectrum PCR; to investigate the presence of UV induced mutations in the TP53 gene in SCCC samples. Methods: 21 SCCC cases and 22 control patients were tested for the presence of HPV in conjunctival tissue; the DNA from the samples was further analyzed for the presence of somatic mutations in the T53 gene. Results: Cutaneous HPV were found in 86% cases and 36% controls, suggesting a role of cutaneous HPV in the aetiology of SCCC. Seven of the mutations were CC to TT transitions, which are characteristic of solar UV light DNA damage.Study III. Aims: to assess the presence of HPV in lesion-free conjunctiva and assess whether there is an excess of HPV infection in concurrent HIV/AIDS disease. Methods: 136 lesion-free frozen conjunctival samples from autopsies performed at Mulago hospital, Kampala, Uganda, were analyzed for the presence of HPV using broad spectrum PCR methods. Results: 14.6% samples tested positive for cutaneous HPV, and no mucosal HPV infection was detected; no excess of HPV infection was found in individuals who had died of HIV/AIDS-related causes as compared to those who had died of other diseases. Conclusion: HPV infection occurs in the conjunctiva: there was no excess of HPV infection in HIV/AIDS patients as compared to other patients, though we cannot rule out the possibility of the misclassification of HIV/AIDS patients.Study IV. Aims: to compare the prevalence of HPV infection in SCCC patients patients with other eye diseases. Methods: Hospital-based case control study in Mulago and Jinja Hospitals, Uganda, involving 94 cases of SCCC and 285 controls with other eye diseases. We compared the prevalence of HPV infection in 94 biopsies of SCCC patients to 285 biopsies from hospital control patients with other eye diseases. Highly sensitive broad spectrum PCR tests that detect up to 75 types of HPV were used to analyze the frozen tissue biopsies. Adjusted odds ratios (OR) and 95% confidence intervals (CI) were computed, adjusting for age, sex and HIV status. Results: cutaneous HPV were detected in 44.7% of the SCCC cases and 10.5% in controls (OR = 6.22; 95% CI = 3.60-10.72). The strength of the association of cutaneous HPV with SCCC was stronger in multiple infections than single infections, (OR = 74.2; 95% CI = 23.4-235.7) and (OR = 12.8; 95% C = 5.5-29.6) respectively. Mucosal types were detected in 6.4% SCCC and 3.5% controls (OR = 1.0; 95% CI = 0.-2.9). HPV5, 8 and 24 were most common in SCCC. The association of cutaneous HPV with SCCC was stronger in SCCC patients with HIV (OR = 17.0; 95% CI = 5.5-52.5). HIV infection was detected in 85.1% SCCC and 44.9% controls, (OR = 7.3; 95% CI = 4.2-12.4). There was no significant association of SCCC with age, sex, educational level, smoking habits, indoor or outdoor occupation. Conclusion: Cutaneous HPV and HIV are significantly associated with SCCC, while mucosal HPV are not significantly associated.List of scientific papersI. Ateenyi-Agaba C, Weiderpass E, Smet A, Dong W, Dai M, Kahwa B, Wabinga H, Katongole-Mbidde E, Franceschi S, Tommasino M (2004). Epidermodysplasia verruciformis human papillomavirus types and carcinoma of the conjunctiva: a pilot study. Br J Cancer. 90(9): 1777-9 https://pubmed.ncbi.nlm.nih.gov/15150602II. Ateenyi-Agaba C, Dai M, Le Calvez F, Katongole-Mbidde E, Smet A, Tommasino M, Franceschi S, Hainaut P, Weiderpass E (2004). TP53 mutations in squamous-cell carcinomas of the conjunctiva: evidence for UV-induced mutagenesis. Mutagenesis. 19(5): 399-401 https://pubmed.ncbi.nlm.nih.gov/15388813III. Ateenyi-Agaba C, Weiderpass E, Tommasino M, Smet A, Arslan A, Dai M, Katongole-Mbidde E, Hainaut P, Snijders PJ, Franceschi S (2006). Papillomavirus infection in the conjunctiva of individuals with and without AIDS: an autopsy series from Uganda. Cancer Lett. 239(1): 98-102. Epub 2005 Sep 6 https://pubmed.ncbi.nlm.nih.gov/16143449IV. Ateenyi-Agaba C, Franceschi S, Wabwire-Mangen Fred, Arslan A, Othieno E, Binta-Kahwa J, van Doorn LJ, Kleter B, Quint W, Weiderpass E (2009). Human Papilloma virus infection and squamous cell carcinoma of the conjunctiva. [Submitted]</p
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
Transition to turbulence in a qblique shock-wave/boundary-layer interaction at M=15
No full textDirect numerical simulations are carried out for different forcing techniques to trigger transition during the interaction between an oblique shock-wave and a laminar boundary-layer at M = 1.5. Three forcing methods are used: a) forcing of oblique unstable modes, whose shape and behaviour are determined by the local linear stability theory, b) broadband free-stream acoustic disturbances, and c) a cold plasma flow control device. While the oblique-mode breakdown is dominant for low-amplitude forcing, long streaky structures drive the transition process in a high-amplitude disturbance environment. LES are also performed on the experimental setup by the Institute of Theoretical and Applied Mechanics (ITAM) from Novosibirsk State University with cold plasma actuation. As well as the disturbance type, the effect of Reynolds number and forcing amplitude will be investigated
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