COGNITIVE MODELLING SKILLS FROM NOVICIATE TO EXPERTNESS

The purpose of this study is to reveal the cognitive modelling skills of 6th grade students after a long term modelling implementation. The cognitive modelling skills are regarded as understanding the problem, simplifying, mathematising, working mathematically, interpreting and validating. Seven-month modelling sequences were designed and conducted, and the first and last implementations were particularly examined in the study. The participants were four students, while the data collection tools were solution papers for two different modelling problems in the implementations and transcriptions of the video records concerning the solution and solution presentation processes. When the data were analysed through a rubric and presented descriptively, it was seen that a development was revealed in cognitive modelling skills from noviciate to expertness. In other words, the students displayed richer approaches in the context of each cognitive modelling skill in the last implementation.   Article visualizations

Find the hidden crab; research on destructive behaviors at the managerial levels of the accommodation business

Purpose - The human-oriented service approach, which is one of the structural features of the tourism sector, causes destructive behaviors of employees to have more negative effects on work efficiency and effectiveness, so it is of great importance to identify and prevent these behaviors. The main objective of this study is to determine the expression of Crab Barrel Syndrome (CBS) among lower, middle and upper managers of employees in the tourism sector. For this purpose, a scale was developed to measure the behaviors of employees with CBS who tend to engage in unethical behaviors in tourism. In addition to our main objective, the differences in the demographic characteristics of CBS employees will also be identified. Design/Methodology - Data were collected using a random sample. A questionnaire was sent to 310 tourism employees. Findings - Analysis of the data revealed that the CBS level (CBSL) of the participants was low, with the CBSL of lower management being the highest and the CBSL of individual employees being the highest. CBSL differed significantly by employee hierarchical levels. In addition, CBSL was not found to differ significantly by gender, educational status, or institution, but CBSL decreased with increasing employee age and hours worked in the sector. Originality of the research - his study provides a solid foundation for a better understanding of CBS and the relationships between workers. It is crucial to identify the negative employee behaviors in advance and take necessary precautions, especially in service sectors such as tourism where employee behaviors have a great impact on service quality.

A step toward precision gerontology : Lifespan effects of calorie and protein restriction are consistent with predicted impacts on entropy generation

Funding Information: Fellowships and Grant Programs, application number of 1059B141801348. The original experimental study was funded by Biotechnology and Biological Sciences Research Council (BBSRC) BB/G009953/1 and the China Partnering Award BB/J020028/1. Funding Information: This research was financially supported by The Scientific and Technological Research Council of Turkey (TUBITAK), Science Fellowships and Grant Programs, application number of 1059B141801348. The original experimental study was funded by Biotechnology and Biological Sciences Research Council (BBSRC) BB/G009953/1 and the China Partnering Award BB/J020028/1. Funding Information: ACKNOWLEDGMENTS. This research was financially supported by The Scientific and Technological Research Council of Turkey (TUBITAK), Science Publisher Copyright: Copyright © 2023 the Author(s).Peer reviewedPublisher PD

Vacutainer ve Enjektör ile Kan Alma Tekniğinin Hemoliz Oranına Etkisinin İncelenmesi

Objective: This study was conducted to determine hemolysis rates for venous blood samples drawn by injector and vacutainer holder and to assess the effect of the venipuncture technique on the process of hemolysis. Material and Method: This cross-sectional and analytical study was conducted with 128 patients who were admitted to the Cardiology and Angio clinics of a university hospital and met the inclusion criteria. One group of patients who were to have routine biochemical tests underwent venipuncture with an injector, and another group with a vacutainer. Results: The serum hemolysis level is not significantly different by gender. No significant correlation was found between blood serum hemolysis levels and age or Body Mass Index with blood drawn with an injector or with a vacutainer. While the serum hemolysis level was on average 0.11 g/dl in blood drawn with an injector, the level in blood drawn with a vacutainer was 0.06 g/dl; the difference was not statistically significant. Conclusion: This study revealed that there was no statistically significant difference between hemolysis rates in blood drawn with an injector or with a vacutainer. However, the hemolysis rates in blood drawn with an injector were almost twice the rates noted in blood drawn with a vacutainer, and this difference may be clinically significant. Amaç: Bu araştırma enjektör ve vacutainer kullanılarak alınan venöz kanlarda hemoliz oranını belirlemek ve kan alma tekniğinin hemoliz gelişimi üzerindeki etkisini değerlendirmek amacıyla yapılmıştır. Gereç ve Yöntem: Kesitsel ve analitik tipte olan bu araştırma, bir üniversite hastanesinin Kardiyoloji ve Anjiyo kliniklerine yatışı yapılan ve araştırmaya dahil edilme kriterlerine uyan 128 hasta ile yürütülmüştür. Rutin biyokimyasal tetkikleri istenilen bir grup hastadan enjektörle, diğer gruptaki hastalardan vacutainer ile kan alınmıştır. Bulgular: Serum hemoliz düzeyi cinsiyetler arasında anlamlı olarak farklı değildir. Enjektör ve vacutainer ile alınan kan örneklerindeki serum hemoliz düzeyleri ile yaş ve Beden Kütle İndeksi arasında anlamlı korelasyon saptanmamıştır. Serum hemoliz düzeyi enjektör ile alınan kanlarda ortalama 0.11 g/dl iken vacutainer ile alınan kanlarda ortalama 0.06 g/dl olup bu fark istatistiksel olarak anlamlı bulunmamıştır. Sonuç: Bu araştırmada enjektör ve vacutainer ile alınan kan örneklerindeki hemoliz oranları istatistiksel olarak anlamlı farklılık göstermemiştir. Ancak enjektörle alınan kanlarda ortalama hemoliz oranı vacutainer ile alınan kanlardan neredeyse iki kat fazladır, bu fark klinik açıdan anlamlı olabilmektedir

Prognostic value of systemic inflammation response index in patients with persistent human papilloma virus infection

Objectives: Persistent human papilloma virus (HPV) infection is a risk factor for the progression of cervical neoplasia into invasive carcinoma. Many inflammatory markers obtaining from hemogram parameters as platelets, monocytes, lymphocytes, and neutrophils or their ratios are still under investigation in recent decades, especially in the oncology era. Indeed, there have not been enough data about the relationship between these parameters and cervical cancer in the literature. Our primary aim was to investigate the possible relationship between the persistent HPV, which is one of the significant risk factors of cervical cancer, and these inflammatory markers. Further, we can add an easy follow-up parameter in women with persistent HPV infection. Material and methods: The study included patients between 30–65 years old, tested positive for HPV, and afterward had an HPV control test between January 2015 and June 2020. Results: The study included 114 HPV DNA-positive patients. The mean age was 43 (standard deviation 8.7), and 41 of them (36%) had persistent HPV, but the remaining 73 (64%) did not. The baseline neutrophil/lymphocyte ratio (NLR) value was 2.1, platelet/lymphocyte ratio (PLR) was 133, monocyte/lymphocyte ratio (MLR) was 0.28, and systemic inflammation response index (SIRI) was 0.9. All the parameters were significantly higher in the persistent HPV group compared to the non-persistent group. Patients who had 0.65 and under this had a significantly lower risk of persistent HPV. Conclusions: Persistent HPV disease can be predicted with an elevated SIRI, NLR, and other hematologic parameters. So, we can closely follow up with these patients with different algorithms to prevent cervical cancer

Radiological screening of abdominal aortic aneurysm in individuals over 65

Objective: The aims of this study were to determine the prevalence of AAA in aged 65 years and above that had been referred for US screening, the association between risk factors for atherosclerosis and AAA, and the effectiveness of screening a population aged 65 years and above with atherosclerosis risk factors using ultrasound (US). Methods: Patients 65 years and over who had undergone US examination for any reason were invited to participate. The 600 patients (335 male, 265 female) who agreed to participate completed a survey of atherosclerosis risk factors. Aneurysm levels in patients with infrarenal or suprarenal AAA were measured using US. Statistical analysis was performed to identify the relationship between AAA and several atherosclerosis risk factors. Results: Of the 600 patients, 35 (5.8%; 33 male and 2 female) patients were diagnosed with AAA. Males and females represented 94.3% and 5.7% of the AAA-diagnosed population, respectively, and 5.5% and 0.3% of the screened population, respectively. Thirty of the AAA-diagnosed patients (85.7%) were between 65 and 79 years and 5 (14.3%) 80 years and above. A significant relationship was found between AAA and advanced age, male sex, smoking, and coronary artery disease and an inverse relationship between AAA and diabetes mellitus (p<0.05). Conclusion: Individuals age 65 and over with atherosclerotic risk factors for AAA should be screened to prevent possible rupture. Performance of US in radiology clinics is an effective means of identifying these patients