Meslek Yüksek Okulları / Vocational Schools

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    Exploring the Relationship between Turkish Mothers' Parenting and Psychological Well-Being in Early Childhood: The Role of Child Emotion Regulation and Dysregulation
    (Başkent Üniversitesi Sosyal Bilimler Meslek Yüksekokulu, 2024-07-06) Kilic, Ceren; Dogan, Raziye Yuksel; Metin, Emine Nilgun
    Although the importance of psychological well-being in early childhood is emphasized, the number of studies conducted with children and adolescents in this field is less than those carried out with adults. The present study aimed to explore the role of child emotion regulation in the relationship between parenting and psychological well-being among a sample of Turkish preschoolers aged 5-6. It further examines the mediating role of emotion regulation. The sample consisted of 416 mothers with children aged 5-6 (Mage = 5.38, SD = 0.48; 50% girls-boys). We collected the data using the Multidimensional Assessment of Parenting Scale (MAPS), the Emotion Regulation Checklist (ERC), and the Psychological Well-Being Scale for Children (PWBS-C). The findings revealed significant relationships among parenting practices (positive/negative), the child's emotion regulation/dysregulation, and the child's psychological well-being. Moreover, the findings revealed that positive parenting, directly and indirectly, affects children's psychological well-being through children's emotion regulation. On the other hand, findings disclosed that negative parenting has both a direct and indirect impact on children's psychological well-being through children's emotion regulation. Overall, the study may shed light on a possible process in which positive parenting boosts a child's emotional regulation and psychological well-being among preschoolers.
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    Detection Of The Lactic Acid Bacterial Community In Small Scale White Cheese Processing Facility Using Shotgun Metagenomics And Culturomics
    (Başkent Üniversitesi Kazan Meslek Yüksekokulu, 2024-06-11) Cerit, Zeynep Gorkem; Ilikkan, Ozge Kahraman; Baloglu, Mehmet Cengiz; Yilmaz, Remziye
    This study aims to characterize lactic acid bacteria (LAB) community in small-scale white cheese processing facility highly favored by consumers. Shotgun metagenomics and culturomics based on MALDITOF MS approaches were employed. Samples from various production stages and equipment surfaces were collected. Dominant phyla in dairy and equipment samples were Firmicutes (63-70%) and Proteobacteria (84-89%), respectively. Lactococcus was the most abundant LAB genus across all samples, with Lactococcus lactis as dominant species followed by Streptococcus , Enterococcus , and Lactobacillus , indicating LAB community diversity contributing to product characteristics. Culturomics identi fied 12 LAB species, including Enterococcus faecalis and Lactobacillus delbrueckii . Metagenomics provided insights into microbial composition and dynamics in dairy environment, while culturomics identi fied speci fic LAB species. The combined approach offers a comprehensive view of dairy microbial communities, aiding industrial development by informing starter culture combinations for improved dairy products and processes. (c) 2024 Elsevier Ltd. All rights reserved.
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    Health Capital and a Sustainable Economic-Growth Nexus: A High-Frequency-Data Analysis during COVID-19
    (Başkent Üniversitesi Kazan Meslek Yükseokulu, 2024-05-31) Sungur, Nazli Ceylan; Akdogan, Ece C.; Gokten, Soner
    The recent COVID-19 pandemic effectively concretized the vitality of health expenditure and the economic-growth nexus, and the threat of new pandemics make re-examining this relationship a necessity. Consequently, this paper focuses on this nexus for developed OECD countries, paying particular attention to the effects of the COVID-19 pandemic. The use of stock indices as proxy variables for health expenditure and economic growth enabled the examination of this nexus by using high-frequency data and financial econometric techniques, specifically via rolling correlation and bivariate GARCH analyses. The data span 1170 observations between 15 May 2018 and 11 November 2022. Since the research period overlaps with the outbreak of Ukraine-Russia war, additional insights are obtained regarding the effects of the war as well. It was found that an increase in health expenditure leads to a delayed increase in economic growth even in the short term, and this relationship mainly develops during crises such as epidemics, wars, supply chain breakdowns, etc., for developed OECD countries. Given the aging population of developed countries, which will probably deteriorate the health status of those countries in the near future, the increasing political tensions around the globe and the considerations of a global recession highlight the importance and the inevitability of investments in health capital for developed countries as well.
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    Investigation Of The Frequency Effect On Electrical Modulus And Dielectric Properties Of Al/P-Si Structure With %0.5 Bi:Zno Interfacial Layer
    (Başkent Üniversitesi Teknik Bilimler Meslek Yüksekokulu, 2024-05-01) Bengi, S.; Cetinkaya, H. G.; Altindal, S.; Durmus, P.
    Capacitance and conductance measurements were made to evaluate the effects of voltage and frequency on the dielectric properties, ac electrical conductivity (sigma(ac)), and electric-modulus of the Al/%0.5 Bi:ZnO/p-Si structures. The measurements were taken in a voltage range of (- 4 V)-(+ 4 V) and frequency range of 0.1-1 MHz, respectively. All parameters were discovered to have substantial relationships to voltage and frequency at accumulation and depletion regions due to relaxation mechanisms and interface traps positioned between %0.5 Bi:ZnO interlayer and p-Si with energies in the Si bandgap. The e'-V, M''-V, and Z''-V plots all demonstrate a peak, and because of electronic charges being reordering and restructuring at surfaces, traps, and dipole-polarization under the external electric field, the peak's position and magnitude vary with frequency. The double logarithmic sigma ac-w curve shows linear behaviour, its slope was found as 0.699, and this value of the Al/%0.5 Bi:ZnO/p-Si/Au structure has high ac conductivity or low resistivity. The observed high changes in the dielectric constant and dielectric loss (e', e'') were explained by Maxwell-Wagner type polarization as well as interface traps.
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    Physicochemical And Sensorial Properties Of Tomato Leathers At Different Drying Conditions
    (Başkent Üniversitesi Kazan Meslek Yüksekokulu, 2024-04-12) Basdemir, Eren; Ince, Alev Emine; Kizgin, Sakine; Ozel, Baris; Ozarda, Ozlem; Sumnu, Servet Gulum; Oztop, Mecit Halil
    Tomato leather as a healthy alternative to traditional fruit leathers was formulated. A tray dryer with changing temperature (50, 60, and 70 degrees C) and relative humidity (5%, 10%, and 20%) was used to achieve the best product in terms of color, water distribution, lycopene content, mechanical, and sensorial properties. Color change was the highest at 70 degrees C due to the Maillard reaction. Lycopene content was also the highest at 70 degrees C. Time domain-NMR relaxometry showed that water distribution of all samples was homogeneous and similar to each other. Processing conditions affected mechanical properties significantly. The highest tensile strength was observed at 70 degrees C, possibly due to the denatured proteins. Sensory analysis indicated better flavor development at 70 degrees C, whereas overall acceptability of samples was higher at 50 degrees C. The results of this study showed the main processing parameters of tomato leather with a minimal amount of ingredients, with acceptable mechanical and sensorial properties.Practical ApplicationTomato leather was produced by using minimal amount of ingredients. Taste of the leather was found acceptable, as a salty snack food. Therefore, this product can be produced economically and it has a high potential to be consumed as an alternative to conventional fruit leathers.
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    Optimization Of Spray-Drying Process Parameters For Microencapsulation Of Three Probiotic Lactic Acid Bacteria Selected By Their High Viability Rate In Sucrose And Fructose Levels And High Temperatures
    (Başketn Üniversitesi Kazan Meslek Yüksekokulu, 2024-05-05) Bagdat, Elif Seyma; Akman, Perihan Kubra; Kutlu, Gozde; Tornuk, Fatih
    Microencapsulation is an efficient way to increase the survival rate of probiotics against harsh conditions. In this study, three probiotic strains (Lactiplantibacillus plantarum subsp. plantarum strain W2 (LP4), Lactiplantibacillus pentosus strain XL640 (LPE1), and Limosilactobacillus fermentum strain W8 (LF2)), isolated from shalgam and gilaburu, were microencapsulated with spray drying and process conditions [maltodextrin concentration (MC, 10-30%) and inlet air temperature (IAT, 110-130 degrees C)] were optimized by central composite rotatable design of response surface methodology. The results indicated that the predicted IAT and MC values for the maximum powder yield and viability were 123.21 degrees C and 22.76%, 130.37 degrees C and 19.49%, and 127.94 degrees C and 10.00% for LF2, LP4 and LPE1, respectively. At these conditions, bacterial viability ranged from 10.27 to 10.33 log colony-forming units per gram (cfu/g), while the powder yield values for the encapsulation of the bacteria were between 43.38% and 50.97%. Furthermore, MC was the most significant factor for the powder yield of LF2, LPE1, and viability of LPE1. Encapsulation efficiency values higher than 92.77% demonstrated the efficiency of spray drying for the protection of selected strains. The microcapsules produced at the optimum points had moisture content between 5.30 and 5.96%. SEM images showed that the microcapsules were in spherical shape. In conclusion, the results confirmed that the selected probiotics were successfully microencapsulated with spray drying with high powder yield, viability, and encapsulation efficiency levels and these features could reveal the potential of the encapsulated probiotic strains to be used in high-sugar foods.
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    Esra (Elevator Simulation, Research & Analysis): An Open-Source Software Tool For Elevator Traffic Simulation, Research, And Analysis
    (Başkent Üniversitesi Teknik Bilimler Meslek Yüksekokulu, 2024-04-05) Tartan, Emre Oner; Ciflikli, Cebrail
    Today, although elevator companies typically have their own elevator simulation and analysis tools, these remain inaccessible to the public due to commercial concerns and rivalry in the sector. Consequently, due to the lack of modular open-source software tools, interest in the design and development of elevator systems in academia is quite limited, contrary to the vast potential of the field. This paper addresses this gap introducing an open-source software tool, the Elevator Simulator for Research and Analysis (ESRA), developed using the MATLAB programming language and an object-oriented approach. ESRA features built-in control methods, and visualization options with the capability to save and reuse traffic data, facilitating in-depth comparative analysis. Moreover, its modular architecture allows a design and development basis for further research in the field. The proposed software aims to enable developers to design, implement, analyse, and compare their control algorithms with other methods.
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    The Frequency Dependent of Main Electrical Parameters, Conductivity and Surface States in the Al/ (%0.5 Bi:ZnO)/p-Si/Au (MIS) Structures
    (Başkent Üniversitesi Teknik Bilimler Meslek Yüksek Okulu, 2024-03-09) Cetinkaya, H. G.; Bengi, S.; Durmus, P.; Demirezen, S.; Altindal, S.
    The capacitance/conductance-voltage-frequency (C/G-V-f) features of the Au/p-Si structures with (%0.5 Bi-doped ZnO) interlayer grown by spin-coating technique was investigated between 100 kHz and 1 MHz. The C-2-V curves that depend on frequency were used to determine the electrical-parameters like diffusion-potential (V-D), Fermi-energy level (E-F), barrier-height (Phi(B)), and depletion-layer (W-D) thickness. The value of Phi(B) was found to increase with increasing frequency due to the decrease in surface-states (N-ss) effects on the C-V characteristics. Voltage dependent series-resistance (R-s) was obtained by using Nicollian-Brews method for each frequency and it decreased with increasing frequency. Both the low-high frequency capacitance (C-LF-C-HF) and Hill-Coleman techniques were used to determine the voltage-dependent profile of N-ss. While N-ss decreases with increasing frequency, voltage-dependent on them give two distinctive peaks due to a special distribution of them at interlayer/semiconductor interface in the bandgap depending on their relaxation time. All these experimental results indicate that the existence of R-s, N-ss, and interlayers considerably influence the impedance measurements.
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    Comparison Of Efficacy And Reliability Of Six Commercial Covid-19 Diagnostic PCR Kits
    (Başkent Üniversitesi Kazan Meslek Yüksek Okulu, 2024-03-26) Sharafi, Parisa; Gokdemir, F. Seyma; Akyol, Mesut; Ardicoglu-Akisin, Yasemin; Gocmen, J. Sedef; Taylan-Ozkan, Aysegul
    Objectives. All countries have been deeply affected by the coronavirus disease 2019 pandemic, both economically and in situations that strain health systems, such as workforce and workload. Therefore, various measures should be taken to control the disease and prevent its spread. Since the disease onset, real-time PCR tests have been used as the gold standard for disease diagnosis. Owing to the rapid progress of the pandemic and the spread of the disease, validation, consistency, and optimization tests of some commercial kits have been conducted directly in the field. Therefore, it is important to compare the results of these kits and improve the existing ones. Methods. We compared five kits (Bioexen, Polgen, Coronex, Diagen, and Anatolia) donated to the TOBB Economics and Technology University Hospital PCR laboratory with the KrosGen kit to detect severe acute respiratory syndrome coronavirus 2. A total of 244 samples were selected and analyzed using five different severe acute respiratory syndrome coronavirus 2 PCR detection kits. Results. Positive and negative results from the six kits were compared using the working protocols of the kits, primers, and cycle threshold (Ct) values. Five of the six kits have reliable compatibility for Ct<30 but decreases for Ct >= 30. Therefore, it is important to evaluate the performance of these kits for reduced viral loads. Conclusions. Using a suitable kit with high compatibility for Ct >= 30 is important for detecting patients with a low viral load and helping prevent disease spread.
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    Evaluating The Multifaceted Impact Of Cephalaria Extract On Dough Quality: Antioxidant, Antimicrobial, And Cytotoxic Properties
    (INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY, 2024-12) Bagdat, Elif Seyma; Bozkurt, Fatih; Ilikkan, Ozge Kahraman; Sagdic, Osman; Tornuk, Fatih
    Cephalaria syriaca, known as cephalaria, is an annual, pilose plant with pink-purple flowers growing wild in wheat fields. Viscoelastic properties of gluten-free doughs can be improved by adding cephalaria. However, this addition results in some undesirable properties in bread such as bitter taste and dark internal colour. This study aimed to reduce these effects by obtaining cephalaria obtained from distilled water and ethanol extracts and to increase the potential use of extracts in bread production. Different proportions of water and ethanol extracts obtained from oil-free cephalaria were added to bread by creating a model with Mixture Design, and the optimum concentration was determined by farinograph trials. The antioxidative, antimicrobial, and cytotoxic effects of extract and the effect of cephalaria on yeast activity were examined. Cephalaria extracts had no measurable antimicrobial effect and no antifungal effect on Rhizopus stolonifer, while an antifungal effect was found against A. niger and P. expansum. The IC50 value was found to be 4.15 mg mL(-1 )for ethanol extract while the water extract had no effect on cells. The addition of extract had no negative effect on the number of yeasts in sourdough fermentation. The study has improved the usage of cephalaria by using water and ethanol extracts in dough.