Enstitüler / Instituteshttp://hdl.handle.net/11727/13902024-03-29T13:50:51Z2024-03-29T13:50:51ZEffects of Repair Techniques and Scarf Angles on Mechanical Performance of Composite MaterialsKaraduman, Beyza NazElaldi, Farukhttp://hdl.handle.net/11727/119572024-03-27T08:31:18Z2023-01-01T00:00:00ZEffects of Repair Techniques and Scarf Angles on Mechanical Performance of Composite Materials
Karaduman, Beyza Naz; Elaldi, Faruk
Today, composite materials, which have the advantage of strength and lightness ratio, have gained great importance especially in the aeronautical industry and automotive sector. With widespread use of composites, the repair of damages caused by external factors has also become an important research topic. In this study, the effects of different repair methods and scarf angles on the mechanical performance of the material were investigated. Scarf angles of 20 degrees, 30 degrees, and 45 degrees have been selected in order not to create too many scarf areas and to find a quick repair method. Also, a comparison of single scarf and double scarf repair was made to find a more robust solution. The samples were produced from carbon fiber prepreg and with the [45/0/90/0/45](2s) fiber orientation. Tensile, compression, and flexural (3-point bending) tests according to ASTM standards were applied to composite samples prepared with single scarf and double scarf repair configurations at different angles. The stress-strain curves obtained as a result of the tests showed that the specimens repaired at 20 degrees had the highest strength. In addition, it has been determined that the samples repaired with double scarf withstand higher forces compared to the samples repaired with single scarf at the same angle.
2023-01-01T00:00:00ZDetermining Prospective Teachers' Self-Efficacy Perception on Scientific Skills Via Pair-Wise Comparison MethodKart, ArifeGelbal, Selahattinhttp://hdl.handle.net/11727/116802024-02-28T11:14:54Z2014-01-01T00:00:00ZDetermining Prospective Teachers' Self-Efficacy Perception on Scientific Skills Via Pair-Wise Comparison Method
Kart, Arife; Gelbal, Selahattin
The aim of this study is to determine the factors which are considered to be effective in self efficacy perceptions relating to scientific research skills of preservice teachers by using scalling through the pair-wise comparison methods. The study was carried out in fall 2012-2013 at Ankara University and Baskent University. The data of the study was collected from 180 preservice teachers who took scientific research methods course. According to the data obtained from the study, preservice teachers relating to scientific research skills, have the highest level of competence in self-efficacy perceptions in terms of data collection and reporting features, although they have the lowest competence in the analysis of data and identifying variables.
2014-01-01T00:00:00ZDeveloping an Educational Material Based on The Needs and Health Literacy of Patients Receiving Radiotherapy and Their RelativesOzdogan, P. SerefKav, S.http://hdl.handle.net/11727/112102023-12-26T12:29:55Z2014-01-01T00:00:00ZDeveloping an Educational Material Based on The Needs and Health Literacy of Patients Receiving Radiotherapy and Their Relatives
Ozdogan, P. Seref; Kav, S.
2014-01-01T00:00:00ZInvestigating The Effects of Poverty on Health and Quality of Life in Poor People Aged 65 and Over in Etimesgut District, AnkaraYilmaz, FikriyeCelik, CansuNumanoglu Tekin, Rukiyehttp://hdl.handle.net/11727/109722023-11-30T11:56:20Z2014-01-01T00:00:00ZInvestigating The Effects of Poverty on Health and Quality of Life in Poor People Aged 65 and Over in Etimesgut District, Ankara
Yilmaz, Fikriye; Celik, Cansu; Numanoglu Tekin, Rukiye
Introduction: The purpose of this research was to examine the effects of poverty on health and quality of life of poor people aged 65 and over in Etimesgut District, Ankara.
Materials and Method: A questionnaire was administered to 116 people over the age of 65 who were deemed a priority group for assistance by the Etimesgut Social Assistance and Solidarity Foundation in Ankara. The questionnaire comprised questions related to socio-demographic characteristics, health status and health care utilization of elderly people, along with the World Health Organization Quality of Life Instrument-Older Adults Module. Research data were evaluated using the Chi-Square Test, Independent Samples T Test, One-Way Analysis of Variance, Mann-Whitney U Test and Kruskal-Wallis Test.
Results: The average monthly income of the elderly participants was 168.94 +/- 54.67 Turkish liras and they lived completely under the poverty line determined for Turkey. However, it was found that women, illiterate participants and those receiving the old age pension were poorer, and of those whose income was below average, more delayed/did not seek help when they were ill. Statistical analysis revealed that total quality of life scores of participants aged 65-74 and literate participants were higher; the "social participation" scores of participants whose income was below average and those received an old-age pension were lower.
Conclusion: Poverty has negative effects on the health status, health care utilization and quality of life of elderly people.
2014-01-01T00:00:00Z