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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

CHEMISTRY OF THE NATURAL AEROSOL: A CASE STUDY IN SOUTH AMERICA

Unknown Date (has links)
Source: Dissertation Abstracts International, Volume: 39-11, Section: B, page: 5301. / Thesis (Ph.D.)--The Florida State University, 1978.
72

Development and Validation of an Instrument for Assessing Distance Education Learning Environments in Higher Education: The Distance Education Learning Environments Survey (DELES)

Walker, Scott L. January 2003 (has links)
Globally, as distance education has become firmly embedded as a part of the higher education landscape, governments and institutions are calling for meaningful research on distance education. This study involved designing, developing and validating a learning environment survey instrument for use in distance education-delivered courses in post-secondary education. Specifically it involved merging two distinctive areas of study: psychosocial learning environments research and distance education research. The unique social structure of asynchronous distance education learning environments requires a unique and economical instrument for measuring the perceptions of distance education course participants. The research followed a three-stage instrument-development process of identifying salient scales, developing survey items, and field testing and analysing data using item analysis and validation procedures. This was followed by an investigation into the associations between the psychosocial learning environment and students enjoyment of distance education. The results yielded a new six-scale, 34-item Web-based learning environment instrument suitable for use in a number of asynchronous post-secondary distance education environments. The new instrument, the Distance Education Learning Environment Survey (DELES) assesses Instructor Support, Student Interaction and Collaboration, Personal Relevance, Authentic Learning, Active Learning, and Student Autonomy. Analyses of data obtained from 680 subjects supported the factorial validity and internal consistency reliability. The results also indicated statistically significant associations between the distance education learning environment and student enjoyment of distance education.
73

The response of marine finfish and invertebrates to seismic survey noise

Fewtrell, Jane Leah January 2003 (has links)
The oil and gas industry is of major economic importance to Australia. Offshore seismic surveys are an essential component of exploration for fossil fuel reserves. Offshore seismic surveys involve the use of arrays of air-guns that produce repetitive high energy, low frequency sound. There is increasing concern about the effect that the noise generated by a seismic survey has on the surrounding marine life. Various species of captive marine fish and one species of squid were exposed to the noise from a single Bolt PAR 600 B air-gun with a 20 cui firing chamber and a source level at 1 m of 203.6 dB re 1 μPa mean squared pressure. Ten trials were conducted in Jervoise Bay and two were carried out off the coast of Exmouth. A different noise regime was used in each trial, however most involved the use of approach-depart scenarios to simulate an actual seismic survey and a 10 second duty cycle. Noise levels received by the animals ranged between 128 - 192 dB re 1 μPa mean squared pressure. Behavioural observations of the fish and squid were made before, during and after air-gun noise exposure. The physiological stress response of the fish was monitored by measuring plasma cortisol and glucose levels before and after noise exposure. The sensory epithelium was removed from the ears of the fish prior to, immediately after and up to 86 days after air-gun noise exposure and examined using a scanning electron microscope. No statistically significant physiological stress response in fish was detected as a result of the air-gun noise exposure regimes used. Significant damage to the ciliary bundles of the sensory epithelium of the sacculus was observed in pink snapper (Pugrus auratus) that had been exposed to air-gun noise between 144 - 191 dB re 1 μPa for 1.71 hours. No regeneration of the hair bundles was observed 58 days after exposure to air-gun noise. / However, evidence of regeneration was observed between 58 and 86 days after noise exposure. Behavioural observations suggested that as air-gun noise levels increase, fish respond by swimming faster, in tighter groups and towards the bottom of the water column. Significant increases in alarm responses were observed in fish and squid to air-gun noise exceeding 158 - 163 dB re 1μPa. An increasing proportion of alarm responses were also observed as the noise level increased. A decrease in the frequency of alarm responses for repeated exposures was observed in squid and some fish. The implications of these findings are discussed with comparisons of noise levels measured from an actual 2678 cui seismic survey air-gun array.
74

Preservice teachers� views of similarities and differences in teaching and learning literacy and numeracy.

Scott, Anne, a.scott@patrick.acu.edu.au January 2005 (has links)
This is a report of an investigation of aspects of preservice teachers� perceptions of teaching and learning English and mathematics and factors influencing them. The participants of the investigation were primary preservice teachers from two tertiary institutions of Victoria, one located inner city, and the other in a regional centre. Of the 349 participants, 163 were commencing and 186 were graduating from their degrees. Preservice teachers completed questionnaires indicating their intentions to use particular practices in their literacy and numeracy lessons. Thirty-one of the 349 surveyed voluntarily discussed key issues arising from the survey during semi-structured audiotaped sessions. Five lecturers responsible for the planning of the compulsory English and mathematics education units at both institutions were interviewed about the survey data and provided written documentation for their units as evidence of their coursework. Data analyses indicated that preservice teachers often considered practices equally appropriate for literacy and numeracy teaching and intended to use them in similar ways. It seemed that preservice teachers enter their degrees with strong opinions about teaching and learning based not only on their recollections of experiences as learners but also from more recent relevant experiences such as their dealings with children as babysitters, tutors, and classroom helpers. They also gained knowledge about teaching contexts from their informal but regular conversations with friends and family who teach. From the examination of the documentation for coursework and discussions with lecturers, it seemed that the content of the literacy and numeracy education units at the two institutions were similar. Overall, the data indicated that many of the preservice teachers� intentions were consistent with the intent of coursework especially when they described general teaching practices. However, in cases where practices were discipline-specific there were limited changes in preservice teachers� intentions even after completing their courses. The prospective teachers reported that they considered their recent salient experiences of teaching and their observations of teachers� practices in schools more influential than coursework.
75

Predicting maternal behaviour of beef cattle using temperament tests

Aitken, Brooke 22 March 2011
Certain temperament traits that exist may be accurate predictors of the behaviour animals will exhibit towards stockpersons and their offspring after parturition. A total of 184 beef cattle in year 1 and 169 in year 2 (99 of these were also tested in year 1) were run through a chute complex and individually restrained before calving to see if their response predicted their behaviour after calving. Pre-calving measurements included exertion force applied against the headgate, a subjective temperament score, the response to a stockperson standing in front of the headgate and the exit speed from the chute. Within 2 d after calving, the cows response to her calf, stockpersons and a predator model were recorded during standardized testing. A blood sample from each calf was collected to measure total serum protein and the calfs adjusted 205 d weaning weight was recorded in year 1. A principal component analysis was used to reduce the number of variables. The components were then used to generate multiple regression trees. The results of this study indicated that many measures of maternal behaviour were not related to the temperament of the animal. The amount of time the cow spends greater than 3m from the calf when it is being handled was somewhat related to temperament; however, this variable may indicate fearfulness of people rather than maternal behaviour. It appears that a cows temperament is, in general, a poor predictor of maternal behaviour. A producer survey was also conducted on 168 cattle producers at 3 Saskatchewan cattle events. The cumulative number of cows owned by the respondents was 33,621, 5.7% of which were reported to be dangerous (cows the producer judged would hurt them after calving if given the chance). The majority of farms (76.2%) had at least one dangerous cow. Mis-mothering (i.e. the cow abandoned or did not care for her calf) had an incidence of 1.4% of cows, and occurred on 56.3% farms. Producers are more tolerant of aggressive cows and are less likely to cull them than cows which abandon or mis-mother their calves.
76

An Assessment of Communication Technology Adoption in Texas Cooperatives

Murch, Matthew 1987- 14 March 2013 (has links)
This study focuses on identifying communication technology adoption behaviors to provide educational benchmarks for Texas cooperatives. A survey was conducted with questions identifying a range of variables describing adoption behavior of communication technology from the background of cooperative managers to board management policy. The survey categorized 105 different cooperatives by current technology use and management practices. Once the data were collected, a factor analysis to understand underlying relationships of variables was conducted. The survey found that Texas cooperative managers are willing to expand on their current use of communication technology, however a clear definition of how to use new concepts as a powerful tool is needed. In terms of governance, we found that many cooperatives have no stated policies regarding the use of communication technologies. Generally, those cooperatives that had defined technology use policies were more likely to be using more forms of technology. Through a logistic and ordered logistic regression of the data, the study did not reflect our initial hypothesis that age of the respondent and the years working for a cooperative (manger characteristics) would be a significant factor in estimating Texas cooperatives? willingness to adopt new forms of communication technology and social media. However, the cooperatives? technology adoption behavior can best be explained by the data produced from descriptive cooperative information and the existence of employee communication technology policies. Likewise, cooperatives? willingness to adopt social media can best be explained by the data produced from manager attitudes and cooperatives? concerns.
77

Inkzine : Redesignandet av en tatuerings- och piercingcommunity

Botolfs, Tobias, Olsson, Jonas January 2011 (has links)
Our employer, Gaddad, is a tattoo and piercing community that was created in 2006 with the basic idea to make it easier for people to get in touch with the tattoo artists and piercers from all over Sweden. With the homepage’s popularity at 2009 they decided to expand with the news page Inkzine. 2011 they contacted us with a plan to expand the homepage to Europe and then merge their two sites under the name Inkzine.The goal of this project was to create design suggestions for Gaddad / Inkzine that both the administration and the current users liked and would consider implementing on the website. In order to evaluate the current design and our suggestions we decided to use two questionnaires . The first questionnaire evaluated the currentdesign to provide us with information for the redesign. The second questionnaire evaluated our new suggestions.With these questionnaire we also carried out an analysis to see the differences in opinions among the users and also between the administration and the users.We also investigated other community homepages, company homepages that had been internationalized, and other tattoo homepages. To see what others had done to adapt to the international market and to investigate the design of tattoo homepages.We also did literary studies in redesign and internationalization, in order to obtain a theoretical foundation for our work.The results of the investigation of other homepages showed that in order to perform an internationalization of a web site no major changes to the looks were necessary, only linguistic changes. The results of our questionnairesshowed that users had in most cases put the majority of their votes on
78

Predicting maternal behaviour of beef cattle using temperament tests

Aitken, Brooke 22 March 2011 (has links)
Certain temperament traits that exist may be accurate predictors of the behaviour animals will exhibit towards stockpersons and their offspring after parturition. A total of 184 beef cattle in year 1 and 169 in year 2 (99 of these were also tested in year 1) were run through a chute complex and individually restrained before calving to see if their response predicted their behaviour after calving. Pre-calving measurements included exertion force applied against the headgate, a subjective temperament score, the response to a stockperson standing in front of the headgate and the exit speed from the chute. Within 2 d after calving, the cows response to her calf, stockpersons and a predator model were recorded during standardized testing. A blood sample from each calf was collected to measure total serum protein and the calfs adjusted 205 d weaning weight was recorded in year 1. A principal component analysis was used to reduce the number of variables. The components were then used to generate multiple regression trees. The results of this study indicated that many measures of maternal behaviour were not related to the temperament of the animal. The amount of time the cow spends greater than 3m from the calf when it is being handled was somewhat related to temperament; however, this variable may indicate fearfulness of people rather than maternal behaviour. It appears that a cows temperament is, in general, a poor predictor of maternal behaviour. A producer survey was also conducted on 168 cattle producers at 3 Saskatchewan cattle events. The cumulative number of cows owned by the respondents was 33,621, 5.7% of which were reported to be dangerous (cows the producer judged would hurt them after calving if given the chance). The majority of farms (76.2%) had at least one dangerous cow. Mis-mothering (i.e. the cow abandoned or did not care for her calf) had an incidence of 1.4% of cows, and occurred on 56.3% farms. Producers are more tolerant of aggressive cows and are less likely to cull them than cows which abandon or mis-mother their calves.
79

The Strategic Marketing Planning of FSR¡¦s Online Survey

Ho, Li-ping 08 August 2012 (has links)
The business of market research has been expanding since the local enterprises make more and more efforts trying to understand consumers¡¦ needs with the assistances from market research firms offering new research methods and know-how supports. Given the overwhelming popularity of Internet and the fast-growing population of Internet users, online survey has become a popular research method that both academic and research communities widely employed with great potential opporutnities in the coming future. Since established in 1997, Focus Survey Research has been expanding its business scope with election research as its core business, and successfully covered its business to polls and market research since 2004. In order to provide clients with more comprehensive research services, FSR set up its online panel database since 2008 and started its strategy alliance with Easy Travel in 2011 launching E-Survey with a online panel database of 300,000 members, and started its online surevey business. This thesis would like to provide related industries or other new buiness units a reference by deep diving on different development stages of FSR, and evaluate how FSR could use its competitiveness to expand its online survey business and further define its marketing strategy planning. The thesis concludes that the three objectives of the online survey development strategy of FSR as follows: 1) Deploys more comprehensive research techniques to meet the clients¡¦ needs, and provide the clients with value-added services, which can help to expand the business scope of FSR accordingly; 2) Strategy alliances with partners from advertising, marketing, media buying and PR field to better increase the awareness of FSR among the market research industry; 3) FSR¡¦s expertise and experiences of conventional research can help to make up for the weakness of the online survey sampling. The combination of online survey with the expertise from offline survey could develop a better online study platform which could even provide clients with better deliverables. The thesis also aims to provide guidelines for FSR¡¦s online survey further strategy development. Given the marketing strategy of ¡§customized services¡¨, the further online business will cover either research studies among its panel database on social issues / consumer trends or customer satisfaction study among the name list provided by clients. Based on the two major business segments, FSR would be suggested to be positioned as ¡§a proactive and aggressive online survey information provider with good cost performance¡¨. Based on its business function, FSR is recommended to be positioned as ¡§clients¡¦ in-house research consultant and partner, which can provide consultations on research projects, handle research requests and assist coordinations.¡¨
80

Abundance and distribution of Ichthyoplankton in the Firth of Forth, Scotland

Omar, Othman Abdu Hashim January 1988 (has links)
No description available.

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