1,021 research outputs found
Variables Affecting Student Motivation Based on Academic Publications
In this study, the variables having impact on the student motivation have been analyzed based on the articles, conference papers, master's theses and doctoral dissertations published in the years 2000-2017. A total of 165 research papers were selected for the research material and the data were collected through qualitative research techniques through document review and content analysis. According to the research results, the most important factors affecting student motivation are the fields of teacher, teachers’ classroom management skills and their teaching methods. In this research, factors having less influence on the student motivation are parental communication, student characteristics and study fields. In addition, relational search type was used more than others, mostly students were selected as the study group and most researches were conducted in USA and Turkey. Keywords: Motivation, classroom management, teaching method, publications
A retrospective evaluation of patients with myelodysplastic syndrome
Aim: To determine our results by examining patient's files who we followed up by myelodysplastic syndrome (MDS) diagnosis between 2005 and 2009 as retrospectively and to compare the accordance of our results with literature.
Methods: We examined 55 patient's files who got MDS diagnosis in 4 year-term. Complete blood count, biochemical analysis, peripheral spread, bone marrow aspiration, bone marrow biopsy examinations, cytogenetic and fluorescence in situ hybridization (FISH) analyses were made for all cases.
Results: Our patient's age average was 69 and when classified according to WHO criterions at the diagnosis time, % 13 (23,6) of cases got diagnosed with RA-RARS, % 29 (52,7) with RCMD-RS, %5 (9,1) with RAEB-1, % 4 (7.3) with RAEB-2, % 3 (5.5) with MDS 5q and % 1 (1.8) with secondary MDS. % 52 of the patients had normal cytogenetic structure. No relation was determined between patients’ diagnosis and international prognostic scoring system (IPSS) scores. During the 4 year-term, our 13 patients died. 6 of these cases died by reason of transforming to acute myeloid leukemia (AML), and 7 patients died because of infection. Mean survival time of cases that died was 6 (1-7) months as of the diagnosis date. Whereas 8 cases were over 70 ages, 5 of our cases were under 70 ages.
Conclusion: MDS is a disease that ranges between anemia and AML and requires cytogenetic trials for diagnosis along bone marrow aspiration and biopsy for the purpose of determining the treatment regimen and prognosis. Determining the IPSS scores of patients by obtained outcomes is required. Risk of transforming to acute leukemia and susceptibility to infection are important in terms of mortality. Overage of patient population restricts the treatment regimens. Age must be an important factor for prognosis and treatment choice.
 
International symposium on peripheral nerve repair and regeneration and 2nd club Brunelli meeting
The International Symposium "Peripheral Nerve Repair and Regeneration and 2nd Club Brunelli Meeting" was held on December 4-5, 2009 in Turin, Italy (Organizers: Bruno Battiston, Stefano Geuna, Isabelle Perroteau, Pierluigi Tos). Interest in the study of peripheral nerve regeneration is very much alive because complete recovery of nerve function almost never occurs after nerve reconstruction and, often, the clinical outcome is rather poor. Therefore, there is a need for defining innovative strategies for improving the success of recovery after nerve lesion and repair and this meeting was intended to discuss, from a multidisciplinary point of view, some of today's most important issues in this scientific field, arising from both basic and clinical neurosciences
Quantification of Volumetric Changes of Brain in Neurodegenerative Diseases Using Magnetic Resonance Imaging and Stereology
Monitoring cantilever beam with a vision-based algorithm and smartphone
The study presented in this manuscript deals with a non-contact structural health monitoring approach based on the use of smartphone and computer vision algorithm to estimate the vibrating characteristics of a cantilever slender beam. We hypothesize that the vibration of the beam can be captured using a smartphone in slow-motion modality and the natural frequency of the beam can be extracted using a computer vision algorithm. The results show an excellent agreement between the conventional contact method and the non-contact novel approach proposed here
Relationship between handedness and toothbrush-related cervical dental abrasion in left- and right-handed individuals
AbstractBackground/purposeCervical tooth abrasion is the loss of tooth material at the cementoenamel junction, and is usually related to faulty brushing habits. In this study, we attempted to evaluate the effects of handedness on tooth-brushing abrasion in terms of brushing habits in left- and right-handed adults.Materials and methodsIn total, 488 subjects participating in the study were divided into 2 groups according to hand preference (group I; left-handed and group II; right-handed), and were interviewed about their brushing habits, and their clinical oral conditions such as the plaque index (PI), gingival index (GI), and tooth wear index (TWI) were determined. Handedness was determined by a questionnaire that focused on handedness using the Turkish version of the Edinburgh Handedness Inventory.ResultsThis study showed that there were no statistically significant differences between groups I and II according to daily tooth-brushing habits, PI, or GI. Statistically significant differences were found between men and women according to the clinical oral scores and brushing habits (P<0.01). However, there were no statistically significant differences between the mean TWI scores of left- and right-handed groups (P=0.12). It was found that an increased frequency and longer duration of tooth-brushing significantly increased the TWI scores in both groups (P<0.01). It was also found that TWI scores were statistically higher in subjects who brushed horizontally rather than vertically (P<0.01). Correlations between clinical oral scores (TWI, PI, and GI) and brushing habits were statistically significant (P<0.01).ConclusionThe oral-hygiene performance of females was better than males. Brushing habits of patients were related to the severity of cervical wear. But no statistically significant relationship was found between hand preference and tooth-brushing abrasion in this study
Physical and chemical properties of recently deposited sediments in the reservoir of the Borcka Dam in Artvin, Turkey
This study was supported by the Department of Scientific Research Projects of Artvin Coruh University (Project Number: 2013.F12.02.03).Large dams produce important changes in flow regime and sediment deposition and distribution in rivers. When inundation starts with the building of dams, water surface area increases, flow rate decreases, and sediment carried by the river is deposited in the reservoir. However, there is a lack of research on the physical and chemical properties of recently deposited sediment in reservoirs of large dams. We aimed to fill this gap in the literature by providing valuable data on the initial formation of sediment deposition areas in reservoirs. Therefore, the aim of this study conducted within the Borcka Dam reservoir was to estimate some physical and chemical properties of deposited sediment, including grain size distribution, penetration resistance, water-stable aggregate, moisture content, organic matter content, and pH at two depths (0-10 cm and 10-20 cm). Another objective was to analyze the distribution of these properties across the sampling site. For this purpose, one of the aforementioned sediment deposition areas, approximately 3.6 ha, was designated as the study site; the study site was further divided into intersecting transects of 10 x 50 m. The penetration resistance values were determined in the field and 182 sediment samples were taken at 91 intersection points of transects, both from the surface (0-10 cm) and subsurface (10-20 cm) layers for laboratory analysis. Data gathered were evaluated using descriptive statistics and ANOVA, while geostatistical analyses were used for calculating spatial variability in the data. Results indicated that the most common texture classes were loam in the surface layer and silty loam in the subsurface layer. Moreover, the penetration resistance values, sand content, and water-stable aggregate values in the surface layer were significantly (P < 0.01) higher than in the subsurface layer, and moisture content, clay and silt content, pH, and organic matter were significantly (P < 0.01) higher in the subsurface layer than in the surface layer. Geostatistical analyses showed that all properties were described by the isotropic variogram and the ranges were lower in the subsurface layer than in the surface layer. This study revealed that the analyzed physical and chemical properties of the recently deposited sediments showed significant differences between the layers
An overview of platelet indices for evaluating platelet function in children with scorpion envenomation
The aim of this study was to assess the correlation between platelet indices and scorpion envenomations (SE). Medical records of 76 children who were hospitalised for scorpion stings in the paediatric intensive care unit (PICU) between February 2013 and November 2013, and 55 healthy children who were similar to the patient group in terms of age and sex, were analysed retrospectively. The leucocyte (WBC), thrombocyte (PLT), plateletcrit (PCT), platelet distribution width (PDW) and mean platelet volume (MPV) values of the 76 children with SE were recorded. These values were compared with the healthy control group. Significantly higher WBC and PDW values were noted in patients with SE in comparison to the controls. Patients with SE had significantly lower mean MPV values compared to the healthy controls (9.03 ± 1.26 compared to 10.43 ± 1.44 fL, respectively; p < 0.001). Although the mean platelet count was slightly elevated in the SE group, no statistically significant difference existed between the two groups (p = 0.097). Furthermore, the mean PCT values in the SE group compared to the control group were slightly decreased, but this decrease was not
statistically significant (p = 0.141). A significant inverse correlation existed between the MPV values and the WBC (r = -0.450, p < 0.01) and PLT counts (r = -0.420, p < 0.01). The PLT values were significantly correlated with the PCT values (r = 0.687, p < 0.01). This study demonstrated that SE may lead to several alterations in platelet indices. Significantly lower values of MPV and higher values of PDW were detected in SE patients. However, the increase in the platelet counts and the decrease in the PCT values were not significant
Determining spatial variability of penetration resistance and particle size distribution in sediment deposition
Erosion and sedimentation in dam reservoirs may result in both ecological and economic problems. That is why, besides its amount, it is important to know physical and chemical properties of sediment accumulated in reservoirs. Thus, it is possible to gather information regarding erosion and parameters affecting the erosion process in a watershed. Determining particle size distribution generally comes first when investigating physical properties of sediments. Despite similar texture formation, compaction degree of sediment layers increases due to repacking of particles with time. It is important to figure out compaction degree of sediment layers in accumulation sites and measuring penetration resistance is one of the techniques used mostly. This study was initiated in one of 9 sediment deposition sites determined along the Borcka Reservoir. Precipitation periods within the watershed of the reservoir and power generation cycles of the dam play an important role on the formation of these sedimentation sites. At the first stage of the study, lateral profile distribution and depth of sediment deposition were determined. Then, on sampling points, arranged by the grid system, penetration resistance was measured. In addition, disturbed sediment samples taken from the same sampling points at two depths (0-10 cm and 10-20 cm) were analyzed for moisture and particle size distribution. Geostatistical analyses were used on these values in order to produce spatial variation maps while regression was used to assess relationships between parameters investigated in this study. Results indicated that there were significant differences between layers in respect to penetration resistance values and particle size of sediments and it was found out that spatial variation of penetration resistance closely related with particle size distribution
- …