Dissertationen: „Frogs Research“

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Howard, Brittni D. „Catching evidence with frogs through focused ethnographic research with a Filipino rice farming community“. Thesis, Northern Arizona University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10009783.

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Rice farmers have a wealth of knowledge about local amphibians, impacts of chemical pesticides on amphibians and rice paddies, and changes in amphibian populations over time. I used my training in anthropology to highlight the relevance of examining the impacts of national and international policies and institutions on local rice farmers’ experiences, perceptions, and practices in regards to amphibians and rice pest management. Through a focused ethnographic approach with farmers in Banca-Banca Victoria, I found that policies and institutions have direct influences on farmers’ knowledge, attitudes, and practices including four themes among rice farmers: (1) articulated perceived consequences of non-native invasive anuran species, such as Rhinella marina and Kaloula pulchra (2) articulated perceived indicators of environmental health provided by native and non-native anuran species (3) perceptions that both native and non-native anurans can help in efforts to manage pest insects in rice paddies (4) local knowledge about impact of chemical pesticides on amphibian populations and observed temporal changes in amphibian populations. I contend that the Filipino rice farmers I worked with have insights into rice farming practices, amphibians, and the local environment that should be further explored in an effort to find alternative or modified pest management practices to positively affect farmer and environmental health, sovereignty, and dignity.

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2

Eriksson, Jakob, und Emanuel Snårelid. „Virtual teams make SMEs leap like frogs : A research regarding how virtual teams influence the internationalization process within a SME“. Thesis, Linnéuniversitetet, Institutionen för organisation och entreprenörskap (OE), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-74678.

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The purpose of this thesis is to examine what impact the new phenomena of virtual teams have on a Swedish SMEs internationalization process. The method of the thesis was decided to be a qualitative study, together with an abductive approach. The data was collected by interviewing managers from six different SMEs that have implemented virtual teams in their organization. All companies are located in Sweden, and are active on the international market, or aim to be internationalized in a near future. Multiple theories are presented in the theoretical framework, the theories chosen to support this thesis are Internationalization, Small-medium enterprise, Virtual teams vs physical teams, and cultural dimensions influencing the team. Based on the theories, a conceptual framework model was developed to show the connection between the mentioned theories. All findings extracted from the interviews is presented in the empirical findings chapter, where the primary data describes each case answers regarding the specific topics and theories. The analysis chapter visualizes the connection between empirical findings and the different theories, presenting advantages and challenges when using a virtual team. The conclusion of the thesis show that implementation of virtual teams can help Swedish SMEs leap over stages in a classical internationalization process. The thesis intends to influence managers of SMEs to implement virtual teams to digitalize their company, or to make their internationalization process easier. Ending the thesis with recommendations for future research

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3

Puig, Virginia Moreno. „Conservation issues for Hochstetter's frog (Leiopelma hochstetteri): monitoring techniques and chytridiomycosis prevalence in the Auckland region, New Zealand : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Conservation Biology at Massey University, Auckland, New Zealand“. Massey University, 2009. http://hdl.handle.net/10179/1132.

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Amphibians are suffering extinctions and range contractions globally. This is caused by numerous factors and most of them are related to human activities. The overall aim of this thesis was to make a significant contribution to the conservation of the endemic amphibian Leiopelma hochstetteri through research. This was achieved by focusing in two of the main conservation issues for this species, the need for standardised and robust monitoring techniques to detect trends and changes in populations, and the determination of the prevalence of chytridiomycosis, caused by the amphibian chytrid fungus (Batrachochytrium dendrobatidis). Two populations of the Auckland Region were selected for this study, one on the mainland (Waitakere Ranges) and the only known offshore island population of this species (Great Barrier Island). For both study sites different monitoring methods were used to obtain some population parameters. Site occupancy models of MacKenzie et al. (2002) gave reliable site-specific estimations of occupancy and detection probability using covariate information and presence-absence data collected from 50 sites in the Waitakere Ranges and four repeated visits during 2008. Elevation and distance searched were found to have an important effect on occupancy levels, while time taken to search the site was important variable determining detection probabilities. Also, parameters were estimated for three age classes separately. Statistical models were used to infer abundance from occupancy analysis, and results were compared with the distribution of relative abundances obtained from repeated transect counts and an established sight/re-sight criterion. In addition, the use of surrogate measures for relative abundance was explored. Detection probability and the distance to first frog found were found to have a significant correlation with relative abundance. These measures can be used to infer relative abundance in future site occupancy surveys. Two surveys and a pilot site occupancy survey were conducted on Great Barrier Island, and presence of frogs was confirmed atthe northern block, and in a small seepage in the central block. No new locations were found. Waitakere Ranges and Great Barrier Is. populations were tested for the presence of chytridiomycosis, and all frogs sampled tested negative (n = 124) which means that if present chytridiomycosis prevalence is lower than 5% with a 95% confidence interval. This and previous evidence suggests that L. hochstetteri may be resistant or immune to the disease. However, to confirm this additional studies are needed.

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Baker, Richard Julian. „Nonlinear and other properties of otoacoustic emissions in frog and human ears“. Thesis, Keele University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306104.

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5

Leduc, Joël. „Life-History Trade-offs in Northern Leopard Frog (Lithobates [Rana] Pipiens) Tadpoles: Interactions of Trace Metals, Temperature, and Ranavirus“. Thesis, Laurentian University of Sudbury, 2014. https://zone.biblio.laurentian.ca/dspace/handle/10219/2160.

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Emerging infectious diseases, pollution and climate change are associated with amphibian extinction events worldwide; however, direct causation is often obscured by the interactions of these stressors. Elucidating the possible synergies between metal contamination and disease is, therefore, critical in advancing our knowledge of the co-evolutionary mechanisms in host-pathogen systems and helping with the ability to better forecast the spread of diseases in metal-stressed environments. Additionally, increasing ecotoxicological research has improved our understanding of the complex influence trace metals may have on the physico-chemical nature of aquatic systems; however, the discrepancy in concentration-response within the toxicological literature makes it difficult to accurately define the range of toxicity, often due to the variability in media used in experimentation. The first chapter of this thesis reports an evaluation of copper, nickel and copper/nickel concentrations on several Northern Leopard Frog (Lithobates [Rana] pipiens) larvae life history traits within field collected smelting effluent water. Overall, results indicated that copper had a stronger negative impact on survival than nickel. However, tadpoles exposed to copper displayed increased growth and developmental patterns while those exposed to nickel demonstrated opposing life history traits. These results indicate that tadpoles are displaying different fitness strategies, in terms of survival and life history, in the presence of increased copper and/or nickel stress.

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Pandey, Ram Naresh. „Physiological Effects on the Expression of Aquaporin 1-Like HC-1 in Cope’s Gray Tree Frog, Hyla Chrysoscelis“. Wright State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=wright1240149535.

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7

Good, Celeste Dawn. „Constructed ponds as mitigated habitat for the wood frog (Rana sylvatica LeConte) and the spotted salamander (Ambystoma maculatum Shaw) in West Virginia“. Huntington, WV : [Marshall University Libraries], 2006. http://www.marshall.edu/etd/descript.asp?ref=649.

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Theses (M.S.)--Marshall University, 2006.
Title from document title page. Includes abstract. Document formatted into pages: contains vi, 65 p. including illustrations and maps. Bibliography: p. 61-65.

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Blech-Hermoni, Yotam. „Roles of CUG-BP, Elav-Like Family Member 1 (CELF1), an RNA Binding Protein, During Vertebrate Heart Development“. Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1417636826.

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9

Nyh, Johan. „From Snow White to Frozen : An evaluation of popular gender representation indicators applied to Disney’s princess films“. Thesis, Karlstads universitet, Institutionen för geografi, medier och kommunikation, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-36877.

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Simple content analysis methods, such as the Bechdel test and measuring percentage of female talk time or characters, have seen a surge of attention from mainstream media and in social media the last couple of years. Underlying assumptions are generally shared with the gender role socialization model and consequently, an importance is stated, due to a high degree to which impressions from media shape in particular young children’s identification processes. For young girls, the Disney Princesses franchise (with Frozen included) stands out as the number one player commercially as well as in customer awareness. The vertical lineup of Disney princesses spans from the passive and domestic working Snow White in 1937 to independent and super-power wielding princess Elsa in 2013, which makes the line of films an optimal test subject in evaluating above-mentioned simple content analysis methods. As a control, a meta-study has been conducted on previous academic studies on the same range of films. The sampled research, within fields spanning from qualitative content analysis and semiotics to coded content analysis, all come to the same conclusions regarding the general changes over time in representations of female characters. The objective of this thesis is to answer whether or not there is a correlation between these changes and those indicated by the simple content analysis methods, i.e. whether or not the simple popular methods are in general coherence with the more intricate academic methods.

Betyg VG (skala IG-VG)

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Tyler, Michael J. 1937. „The biology and systematics of frogs : contributions submitted to The University of Adelaide / by Michael J. Tyler“. 2002. http://hdl.handle.net/2440/38581.

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Vol. [2] comprises 6 reprints of published monographs in box folder; but numbered within the publications submitted listing (90 items), and within the 3 categories identified; at the beginning of vol. 1.
Includes bibliographical references.
2 v. (various pagings) :
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Comprises 90 contributions to the biology and systematics of frogs, with particular emphasis upon those concerning the fauna of Australia and New Guinea. Provides an understanding of the state of knowledge when the author commenced his studies; permitting the extent of his work, an the nature of its significance, to be evaluated.
Thesis (D.Sc.)--University of Adelaide, Dept. of Environmental Biology, 2002

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11

Chang, Wen-Ting, und 張雯婷. „A research integrating frogs ecology conservational curriculum into the animal unit on promoting fifth grader's frogs ecology conservational knowledge, attitude and behavior“. Thesis, 2009. http://ndltd.ncl.edu.tw/handle/60288200366255735726.

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碩士
臺北市立教育大學
自然科學系碩士班
97
This study uses a methodology of one-group pretest-posttest design of quasi-experiment to primarily conduct quantitative analysis, with qualitative analysis as the second, and Convenience sampling is adapted. The sample students were the fifth graders in Da-an Dist of Taipei City, infusion instruction is performed in the experimental classes, which employed “Frogs Ecology Conservational Curriculum(FECC)”. The curriculum is cooperated with outdoor frog ecological game instruction to be integrated into the fourth unit “Animal” in Nature and Life science course of Newton edition. To inquire how the curriculum influence the knowledge of and the attitude, behavior toward frog ecological conservation pertaining to Grade-5 students. The instruments were “Frog Ecology Conservational Knowledge Scale (FECKS)”, “Frog Ecology Conservational Attitude Scale (FECAS)” and “Frog Ecology Conservational Behavior Scale (FECBS)”. The qualitative data we collected were acivity learning sheets and teachers’ self-evaluation notes as well as students’ learning reflections, tape recording, and Semi-Sutured Interviews. Through the data analysis, the findings are: 1. The students who were employed “FECC” got higher scores in posttest than in pretest, among “the total scores of ”FECKS”, “the Knowledge of what is Frog”, “the Knowledge of Frog’s Living Custom ”, “the Knowledge of Frog’s Reproduction” and“the Knowledge of Frog Conservation”. 2. The students who were employed “FECC” got higher scores in posttest than in pretest, among “the total scores of ”FECAS”, “Environment Pollution, Prevention and Cure”, “the Attitude of Creatures and Environment”, “the Attitude of Affinity between Human and Nature” and “the Attitude of Cradling and Using of Resource”. 3. The students who were employed “FECC” got higher scores in posttest than in pretest, among “the total scores of ”FECBS”, “the Behavior of Auto Ecology Conservational Behavior”, “the Behavior of Consuming Behavior” and “the Behavior of convictive Behavior”. 4. “FECC” is assistant to promote students’ frog ecology conservational knowledge, attitude and behavior of the elementary school. According to the research results, the researcher suggests to add outdoor curriculum hours, adjust the timing of curriculum, correct and reflect the curriculum in time, putting living frogs into curriculum can raise students’ attention, the effect of outdoor frog ecological game is surprising good, encourage teachers to fuse and popularize the FECC. Besides, the researcher also recommends that teachers should enrich their own specialty about this field and increase their teaching ability. Since the sampling were restricted to only fifth graders. In the future, the sampling need cover other areas, integrating other creatures into the curriculum as another research, or try to make the FECC an inside curriculum as another research.

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Li, Huan-Jung, und 李煥榮. „Research on outcome of courses for Teachers in Frogs’ World Digital Academy“. Thesis, 2013. http://ndltd.ncl.edu.tw/handle/20819403269170243498.

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碩士
國立東華大學
自然資源與環境學系
101
To effectively promote the ecology and environmental education of frogs, Frogs’ World Learning Website (http://learning.froghome.org/) provides many ecological and habitat information of frogs and establishes internet resources for community-wide learning service. Frogs’ World Digital Academy (http://e-learning.froghome.org/), which is contained within the Frogs’ World Learning Website, has started to offer the teacher class for teacher’s community since 2010. A total of 509 people have signed up during the 3 years since the class started. Among those who signed up, 416 students actually participated in digital course and 234 of them have completed the digital course. The number of people participated in learning increases every year. The average age of students attended the teacher class is 38. Majority of students are school teachers and faculty and they were made aware of the class mostly from the internet. Since the digital life style is prevailing, the most of students have easy internet access and they also have ample time for internet learning. In this study, the results from questionnaires for frogs’ knowledge, the attitude toward frogs’ conservation as well as the degree of satisfaction for class were analyzed. Knowledge and attitudes questionnaires contain 30 knowledge questions and 5 attitude questions. Satisfaction questionnaires evaluate the learning satisfaction in course content and quantity, difficulties and obstacles of participating digital learning, course learning and website system four categories. There are consistency and stability in the results of knowledge questionnaires for 2012 Internet Digital Course. The post-learning knowledge test score is significantly higher than that of pre-learning test. This indicates the effectiveness of teacher class curriculum in knowledge improvement. The post-learning attitude test score is also significantly higher than that of pre-learning test. This shows the attitude of students toward frog conservation has been significantly improved. Students are satisfied with the content and quantity of digital curriculum. They did not think there is any difficulty or obstacle in digital learning. They are very satisfied with the course and think the field trip within the course is necessary and desirable. The satisfaction of website systems for 2012 is significantly higher than that of previous two years. The recommendations of future curriculum planning for teacher class are: 1. Increase habitat introduction courses. 2. Increase field trip courses. 3. Spread the message of digital course for advanced study more aggressively. 4. Improve the website system satisfaction. 5. Strengthen the course discussion interface.

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13

Bilusich, Daniel. „Negative ion mass spectrometry of peptides : an aid to structure determination“. 2006. http://hdl.handle.net/2440/37844.

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Amphibians contain a rich chemical arsenal in their skin glands, vital for their defence against predators, both large and small. The peptides secreted by the frogs have a range of biological activities. These include both antibacterial and anticancer activity, others are neuropeptides, while some exhibit antifungal and antimalarial activity. Peptides are usually sequenced using positive ion mass spectrometry ( MS ). However, negative ion MS can also provide valuable sequencing information. Under negative ion MS conditions, the presence of a Cys residue is immediately identified by the facile side chain loss of H [subscript 2] S. The position of the Cys residue is determined by the formation of a side chain induced backbone cleavage ion. When a Cys residue is in the C - terminal position of a peptide, the spectrum is dominated by the loss of both H [subscript 2] S and CO [subscript 2]. Negative ion MS can also be used to identify and sequence intramolecular disulfide bridged peptides. The disulfide bridge is immediately identified by the facile loss of H [subscript 2] S [subscript 2] from the parent anion. Once the disulfide bridge is cleaved, further amide cleavages provide much of the sequence of the peptide, including the residues originally within the disulfide link. When one of the disulfide bridged Cys residues is in the C - terminal position, the major fragmentation is the loss of H [subscript 2] S [subscript 2] and CO [subscipt 2] from the parent ion. The negative ion mass spectra of citropin 1.1 and synthetically modified analogues show an unusual loss of an internal Val residue from the ( M - H ) - parent ion. This rearrangement requires the decomposing anion to have an α - helical structure. The skin secretions of Litoria peronii or Peron ' s Tree Frog contain five novel peptides which have been named peroneins. Four pro - peroneins are present in the summer secretions only. The biologically active peptides caerulein 1.1, caerin 1.1 and caerin 2.1 are also present in the glandular secretions.
Thesis (Ph.D.)--School of Chemistry and Physics, 2006.

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Chang, Chih-Min, und 張志忞. „A Study of Citizen Scientists Participation Motivation and Continuing Willingness Involve in Research Project for Frogs“. Thesis, 2013. http://ndltd.ncl.edu.tw/handle/53076561144056416248.

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碩士
國立東華大學
自然資源與環境學系
101
This is a study of Taiwan’s amphibian conservation volunteer teams. Volunteers' participation motivation and continuing willingness to involve in the citizen science project were investigated. This study started from April to October in 2012 and interviewed with 17 volunteer squads, by using participant observation method and document analysis method to collect the data. The results showed that the participation motivation of the volunteers including egoistic motives, altruistic motives, society motives, background motives, but the real reasons to support volunteers' involvement were various and interacted with each other. And as for the elements of continuing willingness were emotional identification and rational exchange, though the former played a more important role than the latter. Citizen science project not only conducted scientific researches but also educated volunteers. Its appropriate arrangements for training courses, for example, to instill environmental responsibilities and sense of ownership to volunteers would gradually improve their environmental literacy. The improvement would strengthen volunteers' continuing willingness and their ability of environmental action, and eventually to contribute the conservation of amphibians.

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Lee, Men-Chen, und 李孟真. „Everybody Gathering to Talk and Listen! – Third Grade Student Reading Discussion Research With Arnold Lobel’s “Frog and Toad” Series as Source Material“. Thesis, 2014. http://ndltd.ncl.edu.tw/handle/89886867195445622799.

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碩士
國立臺東大學
兒童文學研究所
102
Reading is the basis of all language literature studies. The researcher intends to go through the reading discussion model to lead the third grade students into re-enjoying the reading fun and to cultivate their listening and expression capabilities. 　This study is using Arnold Lobel’s “Frog and Toad” series for the main reading materials and the researcher’s twenty-eight third grade students as the study objects to proceed total twelve weeks classroom reading discussion sessions. The observation data is analyzed with the help of qualitative data such as in-field observations of students’ classroom discussions and conversations, word to word records of classroom video recording, students’ discussion daily report, and teacher’s daily review notes and with supporting documents such as records and feedback questionnaire. The main research topics are what kind of strategies the teacher can choose to motivate student’s reading interest, how to stimulate student and instigate his further thinking and questioning on the reading contents, and how the children, participating in the reading discussion, from their specific viewpoints interpret adults’ familiar or appreciated stories? 　The conclusions of this research are: 1. During the session of teacher leading the students reading books, with the strategies such as anticipation and role play the student’s reading interests on the books can be motivated. 2. During the session of discussion, with various questioning techniques, teacher can instigate the student to re-think or further explore on his own or other’s opinions. 3. That teacher gives suitable encouragements when student giving speech and provides timely reminders on objectives and rules during discussion session can help the student to develop his discussion and speech capabilities. In addition, the whole discussion session can be smoother. Giving inductive conclusions at the end of discussion can provide the student a better picture of overall discussion. 4. Teacher can realize from the questions raised what are students’ concerning points on the book. Although the question itself may not be on the focus point, it still can be seen as another type of success. 5. From word records such as daily records and questionnaire results, students can really enjoy the fun in reading discussion session and have lots of expectations. 6. The less teacher in the leading role, more chance to see children’s world.

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Roberts, Sarah Elizabeth. „Breccia of Frog Lakes : reconstructing Triassic volcanism and subduction initiation in the east-central Sierra Nevada, California“. Thesis, 2014. http://hdl.handle.net/1805/4085.

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Indiana University-Purdue University Indianapolis (IUPUI)
The Antler and Sonoma orogenies occurred along the southwest-trending passive Pacific margin of North America during the Paleozoic concluding with the accretion of the McCloud Arc. A southeast-trending sinistral transform fault truncated the continental margin in the Permian, becoming a locus for initiation of an east-dipping subduction zone creating the Sierran magmatic arc. Constrained in age between two early Triassic tuff layers, the volcanic clasts in the breccia of Frog Lakes represent one of the earliest records of mafic magmatism in the eastern Sierra Nevada. Tholeiitic rock clasts found in the breccia of Frog Lakes in the Saddlebag Lake pendant in the east central Sierra Nevada range in composition from 48% to 63% SiO2. Boninites produced by early volcanism of subduction initiation by spontaneous nucleation at the Izu-Bonin-Mariana arc are more depleted in trace element concentrations than the clasts while andesites from the northern volcanic zone of the Andes produced on crust 50 km thick have similar levels of enrichment and provide a better geochemical modern analogue. Textural analysis of the breccia of Frog Lakes suggest a subaqueous environment of deposition from a mature magmatic arc built on continental crust > 50 km thick during the Triassic. The monzodiorites of Saddlebag and Odell Lakes are temporal intrusive equivalents of the breccia of Frog Lakes and zircon geochemistry indicates a magmatic arc petrogenesis.

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Civišová, Dagmar. „Kambo a jeho mnoho tváří“. Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-396911.

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This dissertation applies anthropology analysis to study a specie of a tree frog, living in the northern Amazonia, called Kambo. The wax-like substance, which the frog releases upon irritation, is used for its healing potential around the world. A basic conceptual framework is used to analyse the frog from the perspective of modernity, globalisation, and diffusion of cultural dimensions. The dissertation anticipates their influences on multiple parties. The geographical scope of the dissertation is limited on Amazonia and the Czech Republic. Kambo is a host of numerous biochemical interactions; in addition, it is used in socio-material context; in rituals; for gaining, or circulation of experience; or it is part of various techniques of understanding oneself, as described in later works of Michel Foucault. Due to Kambo's alleged participation on creation of human's subjective thinking, the dissertation answers the question on the extent to which Kambo could be responsible, through ethnographic lens. The results show that for those respondents who were experienced Kambo users; using the substance as a potion for treating physiological and mental issues and who were subsequently influenced by New Age movement; Kambo stands as a milestone in their life trajectories. Through the ethnographic research,...

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Dissertationen zum Thema „Frogs Research“

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