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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.
141

Habitat selection and oviposition of the endangered butterfly Scolitantides orion in Sweden.

Jansson, Camilla January 2013 (has links)
Detailed knowledge about the habitat requirements of butterflies is vital for successful conservation. The aim of the present study was to examine the habitat requirements of the endangered butterfly Scolitantides orion on 15 sites in Östergötland, Sweden. The requirements of adults and ovipositing females were studied with regard to several environmental variables measured at three scales; small, transect and large scale. The probability of finding adults increased with decreasing tree cover at the small scale, and adult numbers increased with the proportion of bare rock at the large scale. In contrast, ovipositing females mainly responded to the small scale. The main finding was that females oviposited in areas with higher tree cover (< 70 %) than that preferred by dwelling adults (< 20 %). However, there was a greater probability of finding eggs when tree cover was less than 50 %. Furthermore, egg numbers on host plants increased with the number of leaves on the stem and with the proportion of surrounding bare rock or bare ground. At the transect scale, females oviposited in areas with a higher density of host plants. To conclude, S. orion predominately inhabits open areas with warm microclimatic conditions for dwelling and oviposition. To conserve this species, suitable areas containing nectar plants and high densities of host plants with large leaf numbers and surrounded by large proportions of bare rock or bare ground, should be preserved. The areas should be maintained by selective clearing at regular intervals to uphold canopy openness and heterogeneity.
142

Child and Parent Readiness to Change in a Clinical Sample of Obese Youth

Cobb, Jean E. 01 August 2011 (has links)
Parent and child readiness to change have been identified as emerging areas informing pediatric obesity interventions. The purpose of this study was to increase understanding of child and parent readiness to change in obese youth by examining how these constructs are related to demographic variables, as well as to psychosocial functioning, in a sample of obese youth presenting for weight- management treatment. A secondary aim was to examine consistency between parent and child readiness to change. Two hundred twenty-eight 7- to 17-year-old children and their parents participated during the child’s initial assessment at a multidisciplinary weight-management clinic. Demographic variables included in analyses were child Body Mass Index, parent Body Mass Index, child age, child gender, child race, and family income. Children completed measures of quality of life, depression, social anxiety, internalizing and externalizing symptoms, and readiness to change. Parents completed assessments of children’s quality of life, children’s internalizing and externalizing symptoms, and parents’ own readiness to change. The child’s Body Mass Index was significantly related to both parent and child readiness to change. There was also a significant positive relation between child readiness to change and the child’s own report of social anxiety symptoms, as well as a curvilinear relation with internalizing symptoms, such as depression. In addition to the child’s Body Mass Index, parent readiness to change was positively related to the child’s age and was higher in African American parents than in European American parents. Race moderated the relation between parent readiness to change and health-related quality of life, internalizing symptoms, and externalizing problems. Parents and children were discordant in their ratings of readiness to change, with parents tending to report higher levels; the child’s Body Mass Index moderated the relation between parent and child report of readiness to change. Clinical implications and future directions are discussed.
143

Drömmen om The West : Bildanalys av företaget Swansons kataloger från 2002 och 2009

Pihl, Lina January 2009 (has links)
This study has been about the representation of the Swedish tourism company Swanson’s. They do trips in US and every year they do a brochure with many pictures. The objective of my study is to look how pictures help to constructs places. Its often problem with pictures because sometimes they are constructs. In this way when people look at pictures they think the destination looks like the pictures. In the brochures I want to see what it is for pictures and through that see what kind of representation Swanson’s give of US. I have done both a quantitative and a qualitative research. For do a quantitative research I count all pictures in the both brochures and place them in 25 categories. To get a comprehensive picture of the result I interview a representing from Swanson’s. I analyzed some pictures too in the both brochures, together with the academic benchmarks. The conclusion of the study is that Swanson’s gives an American feeling from the pictures and a spirit from the Wild West. Many of the pictures are pictures of cowboys, native Indians and big, magnificent nature pictures. Other pictures are things that represent US, for example the Statue of Liberty. The tourist can be fooled, because they maybe think that US are like all the pictures in Swanson’s brochures. The authenticity is important for the representation in this way. The authenticity disappears sometimes, because we all know that Indians and cowboy don’t walk on the street today in US. Today we know through TV and internet that native Indians doesn’t exist in theirs genuine clothes and in this way we can accept Swanson’s pictures and dream away.
144

Evaluation on Mathematics Texttbook of Elementary Samples of Grade 1-9 Curriculum Second Learning Stages

Mai, Chang-jen 23 July 2004 (has links)
The purpose of this study is to investigate the relationships between the second learning stages competence indicators of mathematics and mathematic textbook, building a criterion of mathematic textbook choosing and evaluation, and collecting teachers' opinions of second learning stages mathematic in textbook using. This study is first based on the definition of mathematic competence indicators by Education Department to analyze mathematic textbooks. The sample textbooks which will be analyzed include ¡uKang Shaun¡v, ¡uHan Lin¡v and ¡uNan I¡v. Using these samples to understand the competence indicators and structures of three publishing mathematic textbooks. Furthermore, researcher probes the connecting learning materials between new and old curriculum (87 and 92 published version), and then offers references to textbook publishers and teachers. Next, building a standard evaluation table for teachers to choose mathematic textbook. The scale is according to the specialist¡¦s questionnaire in order to make more validity. This standard table can offer references to teachers when they choose mathematic textbooks. At last, applying the mathematic textbook evaluation scale to three sample mathematic textbooks. Each publisher random samples 50 teachers from grade-fourth and grade-fifth. Total 300 teachers participate in the questionnaire survey. Gathering all teachers' opinions and take them into statistics analysis and then give references to the mathematic textbook publisher. Conclusion: 1. Three samples accomplish 100 percent indicator goals. 2. Three samples in numeral and quantity of [Quantity and Measure] appear more and often. 3. The appearance times of competence indicators in three samples in sequence are: numeral and quantity; graphic and space; algebra; statistics and probability. 4. Building a criterion of mathematic textbook choosing and evaluation. Providing teachers references when they choose textbooks. 5. There are different satisfactions of three samples on the fourth and fifth grades. 6. Teachers all give the highest evaluation and agreements to the [physical characteristics]; and lowest to [content characteristics]. 7. Development was supposed to articulation learning materials to between the differences of new and old curriculum. Base on the results of this study, researcher addresses suggestions for school administrators, teachers, publisher and future research study.
145

The Vertical Specialization and Business Cycles Synchronization among Industrial Countries

Chung, Wan-lai 26 June 2007 (has links)
Business cycle is an important issue for economist. Because the fluctuations of product and employment have deep influences on people¡¦s life and social stability, almost every government tries to reduce the volatility of national business cycles. If we want to make it, we must realize it first. Since countries communicate with each other more frequently in recent decades, the volatility of national product cycles is not only influenced by domestic economic variables but also foreign ones. The purpose of this paper is to analyze the effect of transmission mechanism on international business cycles synchronization (BCCs). The major purpose of this paper is to analyze the effect of international vertical specialization on BCCs among industrial countries. There are two kinds of effect. One is indirect effect. Vertical specialization happens between industrial countries and developing countries, so it can reduce bilateral trade intensity among industrial countries. Through this way, BCCs among industrial countries will reduce. The other one is direct effect. Vertical specialization changes the economic structure of industrial countries. Industrial countries can focus on product development and market research. This kind of economic structure is less capital intensive, which lessens the effect of common shocks to industrial country¡¦s business cycles. BCCs among industrial countries will reduce. We measured the effect using the data from G6 (Canada, France, Germany, Japan, UK and US). The result is consistent with our inferance. Vertical specialization can reduce BCCs by reducing bilateral trade intensive among industrial countries. There is a negative relation between Vertical specialization and BCCs among industrial countries.
146

Physical Activity And Exercise Stages Of Change Levels Of Middle East Technical University Students

Cengiz, Cevdet - 01 July 1999 (has links) (PDF)
The purposes of this study were to examine (a) physical activity participation levels, (b) exercise stages of change levels and (c) physical activity preferences of the Middle East Technical University undergraduate students with respect to gender, residence and faculty. Participants were 953 students from 5 different faculties (496 male, and 547 female). For the data collection, International Physical Activity Questionnaire (IPAQ), Physical Activity Stages of Change Questionnaire, and Physical Activity Preferences Questionnaire were used. Descriptive statistics (frequency, mean, median, percentage), and nonparametric statistical methods (Mann Whitney U test, Kruskal-Wallis test, Pearson chi-square test) were used for the data analysis. According to the IPAQ, male students were more physically active than female counterparts. Students who were living in campus had higher physical activity levels, and faculty of architecture students were more sedentary compared to other faculty students (p &lt / 0.05). In general, 24.8% of the students were physically active, 59.9% of the students were moderately active, and 15.3% of them were inactive. The results on exercise stages of change revealed that male students were at upper stages as compared to the female students. Faculty of architecture students were at lower stages compared to the other faculty students (p &lt / 0.05). There was no significant differences on the stages of students who were living in and out of the campus (p &gt / 0.05). In general, students at pre-contemplation, contemplation, preparation, action and maintenance stages were 15.2%, 31.4%, 25.3%, 7.5%, and 20.6% respectively. Swimming (59.2%), walking (56.7%), cycling (36.2%) and football (30.4%) were the most frequently preferred physical activities. Dancing and tennis were preferred more with the female students while football and basketball preferred more with the male students. Physical activity preferences of students living in and out of campus were similar. In conclusion, female students, students living out of the campus and students of faculty of architecture were more at risk. Approximately 75% of the METU undergraduate students&rsquo / physical activity levels were not satisfactory for a healthy life. University physical activity facilities, extracurricular programs and the courses should be reconsidered based on the findings of this study.
147

The relation between the stage of purchase process and the need for various product information as consumers purchase the high-quality furniture

Lin, Hsiu-jung 26 August 2008 (has links)
As Taiwanese consumers¡¦ economic ability grew up and pursuing for housing quality expanded in the recent years, their high-quality furniture purchasing behavior has increased gradually .The current research mainly studied the relation between the stage of purchase process and the need for various product information as consumers purchase the high-quality furniture. The examples for the research were 60 students from the National Sun Yat-sen University. The current research applied a 3¡Ñ2 factorial experiment design. Where the purchasing three decision stages were: problem recognition, alternative evaluation and purchase decision, and the furniture category option were sofa of living room and bedding set of bedroom, general data regarding consumer¡¦s information search behavior on furniture purchase were collected in the process of the experiment. Important findings of the current are summarize as follows: (1) Among different purchasing stages, there was significant difference in information needs in terms of category and particular item. But no significant difference in preference for information sources between various furniture items neither among decision stages. (2) Furniture category was found to be a nonsignificant variable to information need and information source. (3) The interaction effect on information needs was found for the variable of decision stage and furniture category.
148

Évolution des projets professionnels des étudiants en troisième cycle de médecine générale en fonction de leurs stages au sein de la Faculté de médecine de Créteil

Del Vecchio, Raphaël. Compagnon, Laurence. January 2008 (has links) (PDF)
Thèse d'exercice : Médecine. Médecine générale : Paris 12 : 2007. / Titre provenant de l'écran-titre. 88 f. Bibliogr. f. 84-86.
149

A discourse analysis of literature discussions in a college-level intensive ESL course

Kang, Chun Hwa 11 July 2012 (has links)
The purpose of this study was to describe and interpret young adult ESL (English as a Second Language) students‘ participation in discussions of literature in a high-intermediate level reading classroom at a university-affiliated ELP (English Learning Program) program. Additionally, this study explored the nature and characteristics of talk generated by ESL students within the context of literature discussions. Naturalistic methods of data collection were employed in keeping with the constructivist paradigm, including classroom observations, audio and video recordings, transcripts of audio and video recordings, field notes, interviews with the teacher and students, teacher resources, and student artifacts. This naturalistic inquiry drew from qualitative traditions in its design, and the study was further guided by grounded theory (Glaser & Strauss, 1967) and discourse analysis. The study findings indicated that literature discussions were structured by six stages: (1) reading at home, (2) setting up and review, (3) students redefining the tasks, vii (4) students doing the tasks, (5) sharing with the class, and (6) taking in-class quizzes. Analysis revealed that these sequenced stages that allowed for a shifting of roles and positions between the teacher and students and among students enabled students to have regular and extended opportunities for talk and interaction. The findings of the study demonstrated that the student-to-student exchanges featured more discursive talk as the students were encouraged to construct meanings collaboratively and to engage in interactive discourse with one another. The implications of these findings in terms of teaching as mediation and the nature of talk in ESL classrooms are discussed. / text
150

Spatial Patterns in Stage-Structured Populations with Density Dependent Dispersal

Robertson, Suzanne Lora January 2009 (has links)
Spatial segregation among life cycle stages has been observed in many stage-structured species, including species of the flour beetle Tribolium. Patterns have been observed both in homogeneous and heterogeneous environments. We investigate density dependent dispersal of life cycle stages as a mechanism responsible for this separation. By means of mathematical analysis and numerical simulations, we explore this hypothesis using stage-structured, integrodifference equation (IDE) models that incorporate density dependent dispersal kernels.In Chapter 2 we develop a bifurcation theory approach to the existence and stability of (non-extinction) equilibria for a general class of structured integrodifference equation models on finite spatial domains with density dependent kernels. We show that a continuum of such equilibria bifurcates from the extinction equilibrium when it loses stability as the net reproductive number n increases through 1. We give several examples to illustrate the theory.In Chapter 3 we investigate mechanisms that can lead to spatial patterns in two dimensional Juvenile-Adult IDE models. The bifurcation theory shows that such patterns do not arise for n near 1. For larger values of n we show, via numerical simulation, that density dependent dispersal can lead to the segregation of life cycle stages in the sense that each stage peaks in a different spatial location.Finally, in Chapter 4, we construct spatial models to describe the population dynamics of T. castaneum, T. confusum and T. brevicornis and use them to assess density dependent dispersal mechanisms that are able to explain spatial patterns that have been observed in these species.

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