Çanakkale Onsekiz Mart University
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Profitability determinants in Turkish banking: comparing Islamic and conventional banks under inflation and bond rate effects
No full textPurpose
This study aims to compare the effects of exogenous factors, particularly inflation and bond interest rates, on the profitability of Islamic (participation) and conventional banks in Türkiye.
Design/methodology/approach
The Fourier function-enhanced Johansen cointegration test was applied to data covering the period 2005/Q1–2023/Q4. The stationarity levels of the variables were determined using the Zivot–Andrews unit root test, followed by a cointegration test, and long-run coefficient estimates were evaluated.
Findings
The results indicate that inflation positively affects bank profitability in both Islamic and conventional banking sectors, whereas bond interest rates have a negative impact. No significant difference was observed between the two banking models in terms of these effects. Furthermore, contrary to existing literature suggesting a positive relationship between bond interest rates and bank profitability, this study provides empirical evidence of a negative long-run impact.
Originality/value
This study contributes to the literature by demonstrating the negative effect of bond interest rates on bank profitability, challenging conventional claims. In addition, it highlights the similar sensitivities of Islamic and conventional banks to macroeconomic factors, providing valuable insights for policymakers. The findings have significant implications for both the Turkish banking sector and the global financial system
Yüksek performanslı betonun basınç dayanımının farklı makine öğrenimi algoritmaları ile tahmin edilmesi
Full text linkCompressive strength of concrete is influenced by various factors including the amount and properties of concrete components, age, environmental conditions and experimental conditions. Machine learning algorithms are emerging as an alternative method for determining the compressive strength of concrete which is one of its most critical properties. In this study six different machine learning models were employed to predict the compressive strength of high-performance concrete using an open dataset of 1030 samples. Additionally the impact of incorporating newly derived features into the existing dataset on the prediction process was examined. The contribution of these new features to the performance of the algorithms was evaluated and the algorithms yielding the best results were analyzed. According to the results XGBoost and LightGBM demonstrated the best performance in terms of prediction accuracy and computational efficiency. Moreover, adding two new features to the dataset improved the predictive accuracy of the employed machine learning algorithmsBetonun basınç dayanımı, beton bileşenlerinin miktarları ve özellikleri, yaşı, ortam koşulları, deneysel koşullar gibi birçok faktörden etkilenmektedir. Betonun en önemli özelliği olan basınç dayanımının belirlenmesi amacıyla makine öğrenimi algoritmaları alternatif bir yöntem olarak kullanılmaktadır. Bu çalışmada, yüksek performanslı betonun basınç dayanımını tahmin etmek amacıyla 1030 satırlık açık veri seti üzerinde altı farklı makine öğrenimi modeli kullanılmıştır. Ayrıca mevcut veri setine türetilen yeni öznitelikler ilave edilerek betonun basınç dayanımını tahmin etme süreçlerindeki etkileri incelenmiştir. Bu bağlamda yeni özniteliklerin algoritmaların performansına olan katkısı değerlendirilmiş ve hangi algoritmaların en iyi sonuçları verdiği analiz edilmiştir. Elde edilen sonuçlara göre doğru tahmin etme yeteneği ve süre açısından en iyi sonucu XGBoost ve LightGBM algoritmaları göstermiştir. Buna ilaveten, veri setine iki yeni öznitelik daha eklenmesi kullanılan makine öğrenimi algoritmalarının doğru tahmin etme yeteneğini arttırmıştır
Examining the effect of extracurricular sport activities on secondary school students' adaptation to school
No full textDers dışı sportif etkinliklerin ortaokul öğrencilerinin okula uyumlarına etkisinin incelenmesinin amaçlandığı bu çalışmaya 30 deney grubu, 30 kontrol grubu olmak üzere 60 öğrenci dahil edilmiştir. Veriler 12 haftalık uygulama öncesinde ve sonrasında Durnalı ve arkadaşları tarafından uyarlanan okula uyum ölçeğinin uygulanması ile toplanmıştır. Araştırmanın deneysel bölümünde verilerin normallik analizi için Shapiro Wilk testi kullanılmıştır. Kontrol ve deney grupları arasında ön testler arasındaki fark için normallik analizi sonuçlarına göre bağımsız örneklem t testi kullanılmıştır. Grupların ön test ve son test puanları arasındaki fark için ise bağımlı örneklem t testi yapılmıştır. Gruplar arasındaki farkın etki büyüklüğünün belirlenmesinde Cohen d değerine bakılmıştır. Bu çalışmanın bulguları, ders dışı sportif etkinliklerin ortaokul öğrencilerinin okula uyumlarını pozitif yönde etkileyebileceğini göstermektedir. Deney grubundaki anlamlı iyileşme, sportif etkinliklerin öğrencilerin sosyalleşme, kendine güven ve aidiyet duygularını artırarak okula uyumu desteklediğini ortaya koymaktadır. Ancak, deney ve kontrol grupları arasındaki farkın istatistiksel olarak anlamlı olmaması, gelecekteki çalışmaların daha uzun bir süreçte ve daha büyük örneklemlerle yapılmasının önemini vurgulamaktadır.This study, which aims to examine the effects of extracurricular sports activities on the adaptation to school of middle school students, included 60 students, 30 in the experimental group and 30 in the control group. Data were collected by applying the school adaptation scale adapted by Durnalı and his colleagues before and after the 12-week application. Shapiro Wilk test was used for normality analysis of the data in the experimental part of the study. Independent sample t test was used according to the results of normality analysis for the difference between the pre-tests between the control and experimental groups. Dependent sample t test was used for the difference between the pre-test and post-test scores of the groups. Cohen d value was examined in determining the effect size of the difference between the groups. The findings of this study show that extracurricular sports activities can positively affect the adaptation to school of middle school students. The significant improvement in the experimental group reveals that sports activities support adaptation to school by increasing the students' socialization, self-confidence and sense of belonging. However, the fact that the difference between the experimental and control groups was not statistically significant highlights the importance of conducting future studies over a longer period and with larger sample
Can ultrasonography be used to detect root perforation? An in vitro study
No full textThis study assessed the usability of ultrasonography in detecting root canal perforations. The buccal side of incisor root were perforated. The actual lengths up to the perforation site were measured by visualisation of the tip of a file. Specimens were embedded in gypsum, and it was scraped to simulate bone resorption. Resorption cavities were filled with ultrasound gel. Measurements were taken by advancing a file through the canal until the tip became visible in the ultrasound image. 3D scans were obtained using cone-beam computed tomography (CBCT) and the distance between the coronal point of the resorption cavity and the reference point was measured. The actual distance of the resorption cavity from the reference point varied 6-10.6 mm. The same distances were measured via ultrasound as 5.7-10.9 mm, while measured using CBCT 6-10.5 mm. No significant differences were found. Ultrasonography shows promise for detecting root perforations, however further research is needed
The Effect of well-being interventions on english language pre-service teachers' ability to cope with the challenges during their school practicum
Full text linkThis research explores the effect of a well-being intervention program on pre-service English language teachers' ability to cope with challenges during their school practicum. The primary goal is to assess how such interventions impact stress management and resilience in real teaching contexts. Ten senior pre-service teachers participated in the 14-week study, during which data were collected through focus group interviews before and after the intervention, daily self-report charts, and gratitude journals. The well-being of participants was assessed using the PERMA Profiler (Butler and Kern, 2016), which measures Positive Emotion, Engagement, Relationships, Meaning, and Accomplishment. The intervention focused on activities aimed to enhance these dimensions, with an emphasis on stress reduction and positive coping mechanisms. Results indicated that the intervention positively impacted participants' stress, emotional regulation, and resilience, as shown in daily reports. findings suggest integrating well-being programs in teacher education to foster professional resilience
HIV ile yaşayan bireylerde sifiliz eş enfeksiyonu: üçüncü basamak üniversite hastanesi verileri
No full textPurpose: This study aimed to examine the coinfection of syphilis in HIV-positive individuals and the epidemiological and clinical characteristics of these patients. Material and methods: Our study was conducted in Çanakkale Onsekiz Mart University, between 13.02.2018 and 13.02.2024, in 26 patients with clinically and laboratory-confirmed syphilis co-infection among 142 HIV/AIDS patients who were followed up and confirmed in the infectious diseases and clinical microbiology outpatient clinic. Results: A total of 142 HIV positive and 26 (18.3%) syphilis coinfected patients between the ages of 17-77 were included in the study. The mean ages of the infected and syphilis coinfected patients were 39.1 and 41.07, respectively. Six (23%) of the coinfected patients were married, the remaining 14 (53.8%) were single or divorced, five had multiple partners; 20 (77%) were heterosexual, four (15%) were men who have sex with men (MSM), and two (8%) were bisexual. Simultaneous HIV/syphilis positivity was detected in 14 (54%) of the coinfected patients at the time of diagnosis, while 7 (27%) were detected during the HIV treatment follow-up period, and 5 (19%) were detected before HIV diagnosis. Of the patients with coinfection, five (19.2%) had primary syphilis, 10 (38.5%) had latent syphilis, and 11 (42.3%) had secondary syphilis at the time of diagnosis. Twenty-two (85%) of the patients had been diagnosed and treated for syphilis only once, while the remaining (15%) had received two or more treatments. Conclusions: The prevalence of syphilis coinfection and reinfection in patients was 18.3% and 15%, respectively. In cases of coinfection, male gender, alcohol and drug consumption, being MSM, irregular lifestyles, and sexual habits were found to be effective. It is important to conduct screening for syphilis and other sexually transmitted diseases (STDs) in HIV-infected patients. Providing psychiatric support to these patients in organizing their life plans is also very important for preventing HIV transmission and syphilis coinfection. © 2025, Pamukkale University. All rights reserved.Amaç: Bu çalışmada HIV ile infekte bireylerde sifilizin koenfeksiyonunun varlığı ve bu hastaların epidemiyolojik ve klinik özelliklerinin incelenmesini amaçladık.
Gereç ve yöntem: Çalışmamız 13.02.2018-13.02.2024 tarihleri arasında Çanakkale Onsekiz Mart Üniversitesi Hastanesi Enfeksiyon Hastalıkları ve Klinik Mikrobiyoloji polikliniğinde takip edilen ve tanısı doğrulanan 142 HIV/AIDS hastası arasından klinik ve laboratuvar olarak doğrulanmış sifiliz koenfeksiyonu olan 26 hastada gerçekleştirildi.
Bulgular: Çalışmaya yaşları 17-77 arasında değişen 142 HIV pozitif ve 26 (%18,3) sifiliz koenfekte hasta dahil edildi. Enfekte ve sifiliz koenfekte hastaların yaş ortalamaları sırasıyla 39,1 ve 41,07 idi. Koenfekte hastaların altısı (%23) evliyken, kalan 14’ü (%53,8) bekar veya boşanmış, beşi multipartnerli; 20‘si (%77) heteroseksüel, dördü (%15) erkeklerle seks yapan erkekti (men who have sex with men – MSM), ikisi (%8) biseksüeldi. Koenfekte hastaların 14'ünde (%54) eş zamanlı HIV/sifiliz pozitifliği tanı anında tespit edilirken, 7'si (%27) HIV tedavi-takip sürecinde ve 5'i (%19) HIV tanısı öncesinde tanı almıştı. Koenfekte hastaların beşinde (%19,2) tanı anında primer, 10'unda (%38,5) latent ve 11'inde (%42,3) tanı anında sekonder sifiliz vardı. Hastaların 22'sine (%85) sadece bir kez sifiliz tanısı konulmuş ve tedavi edilmişken, kalan (%15) hastalar iki veya daha fazla tedavi almıştı.
Sonuç: Hastalarda sifiliz koenfeksiyonu ve reenfeksiyon prevalansı sırasıyla 18,3% ve 15% idi. Koenfekte hastalarda erkek cinsiyet, alkol ve uyuşturucu tüketimi, erkeklerle seks yapan erkek olmak (MSM), düzensiz yaşam tarzı ve cinsel alışkanlıkların etkili olduğu bulundu. HIV enfeksiyonlu hastalarda sifiliz ve diğer cinsel yolla bulaşan hastalıklar (CYBH) için tarama yapmak önemlidir. Bu hastalara yaşam planlarını düzenlemeleri konusunda psikiyatrik destek sağlamak HIV bulaşmasını ve sifiliz koenfeksiyonunu önlemek için çok önemlidir
Decoy oligodeoxynucleotides targeting STATs in non-cancer gene therapy
No full textThe Signal Transducer and Activator of Transcription (STAT) protein family is crucial for organizing the epigenetic configuration of immune cells and controlling various fundamental cell physiological functions including apoptosis, development, inflammation, immunological responses, and cell proliferation and differentiation. The human genome has seven known STAT genes, named 1, 2, 3, 4, 5a, 5b, and 6. Aberrant activation of STAT signaling pathways is associated with many human disorders, particularly cardiovascular diseases (CVDs), making these proteins promising therapeutic targets. Improved understanding of altered and pathological gene expression and its role in the pathophysiology of various hereditary and acquired disorders has enabled the development of novel treatment approaches based on gene expression modulation. One such promising development is the oligodeoxynucleotide decoy method, which may allow researchers to specifically influence gene activation or repression. Various oligodeoxynucleotide decoys target STATs and affect the expression of its downstream genes. We summarized cell culture and preclinical research, which evaluated the effects of oligodeoxynucleotide decoys target STATs in different types of non-cancer illnesses
Effects of chemical diluent used on apple varieties cultivated in Bayramiç climate conditions of Çanakkale province
No full textAraştırma Çanakkale ilinin Bayramiç ilçesindeki üretici bahçesinde yürütülmüştür. Çalışmada Golden Delicious ve Fuji elma çeşitleri kullanılmıştır. Uygulama ve ölçümler için ağaçlarda eşit uzunluktaki farklı dallar seçilmiştir. Her iki çeşitte belirlenen dallarda tam çiçeklenme döneminde uygulama yapılmıştır. Hazırlanan 5, 10, 20 ppm'lik Naftalen Asetik Asit (NAA) çözeltisi ağaç dallarına el pompası kullanılarak uygulanmıştır. Ayrıca kontrol olarak belirlenen dallara saf su uygulaması yapılmıştır. Elma çeşitlerinde fenolojik gözlemler yapılarak tomurcuklanma, çiçeklenme başlangıcı, tam çiçeklenme ve çiçeklenme sonu tarihleri belirlenmiştir. Uygulama yapılan dallarda tomurcukların kabardığı dönemden hasat önü döneme kadar geçen sürede düzenli olarak sayımlar yapılmış ve kaydedilmiştir. Yapılan uygulama dozlarının seyreltme oranları hesaplanmıştır. Kaydedilen veriler sonucunda Golden Delicious elma çeşidinde fenolojik safhaların Fuji çeşidinden yaklaşık 10 gün önce gerçekleştiği tespit edilmiştir. Çiçekten küçük meyveye dönüşümde gerçekleşen meyve seyrelmesi Fuji çeşidinde en fazla 20 ppm NAA uygulamasında %64,96 olarak gerçekleşmiştir. Golden Delicious çeşidinde 20 ppm NAA uygulamasında en fazla seyrelme %65,94 oranda gerçekleşmiştir. Bu dönemde doz artışıyla seyrelme oranının da arttığı tespit edilmiştir. Küçük meyve oluşumundan haziran dökümüne kadar geçen sürede ve haziran dökümünden hasat önü sayımına kadar geçen sürede olan meyve dökülmelerinin çoğunlukla doğal nedenlerle olduğu belirlenmiştir. Çiçek sayımından hasat önü sayımına kadar gerçekleşen toplam seyreltme Golden Delicious çeşidinde en yüksek 20 ppm NAA uygulamasında %92,60 oranda gerçekleşmiştir. Fuji elma çeşidinde ise en yüksek seyrelme 5 ppm NAA uygulamasında %90,17 oranında belirlenmiştir. Doz uygulama ortalamalarına göre uygulanan NAA dozu arttıkça seyrelme oranının da arttığı tespit edilmiştir.The research was conducted in an orchard in Bayramiç district of Çanakkale province. The study used Golden Delicious and Fuji apple varieties. For measurements, three branches of equal length were selected from each tree. Applications were made on the designated branches of both varieties during the full bloom period. Prepared Naphthalene acetic acid (NAA) solutions at concentrations of 5, 10, and 20 ppm were applied to the tree branches using a hand sprayer. Additionally, 0 ppm branches were chosen as controls. Phenological observations were conducted on the apple varieties to determine dates for bud burst, flowering onset, full bloom, and end of flowering. Counts were made regularly from the bud swelling stage to the pre-harvest period on the treated branches and recorded. The thinning rates of the applied doses were calculated. According to the recorded data, phenological stages in the Golden Delicious apple variety occurred approximately 10 days earlier than in the Fuji variety. In the conversion from flower to small fruit, the highest thinning rate in the Fuji variety was 64.96 % at a dose of 20 ppm NAA. In the Golden Delicious variety, the highest thinning rate was 65.94 % at a dose of 20 ppm. It was observed that thinning increased with dose increments during this period. Most of the fruit drop from the small fruit formation stage to June drop and from June drop to the pre-harvest count period was found to be due to natural causes. The total thinning rate from flower count to pre-harvest count in the Golden Delicious variety was highest at 92.60 % at a dose of 20 ppm NAA. For the Fuji apple variety, the highest thinning rate was 90.17 % at a dose of 5 ppm. It was determined that as the NAA dose increased, the thinning rate also increased based on dose application averages
Determination of forage quality and forage and grain yields in intercropping of barley (Hordeum vulgare L.) and annual medic (Medicago orbicularis L.)
No full textTek yıllık yoncaların tarımda kullanılması, toprağın, bitkinin ve çevrenin sağlığı için vazgeçilmezdir. Bu çalışmanın amacı, arpayı yalın ve tek yıllık yonca ile (Medicago orbicularis) %100, %75, %50, %25 oranlarında karışık ekerek ot verimi, kalitesi ve arpanın verimi belirlenmiştir. Deneme Çanakkale Onsekiz Mart Üniversitesi Dardanos Yerleşkesinde 2022-2024 yıllarında yürütülmüştür. Tesadüf blokları deneme planına göre üç tekrarlı olarak sonbaharda kuru şartlarda kurulmuştur. İki yılın sonuçlarına göre en yüksek yeşil ve kuru ot verimi Arpa+%100 Tek yıllık yonca karışımdan elde edilmiştir. Otun ham protein oranı Arpa+Tek yıllık yonca karışımında en yüksek olurken, en düşük yalın arpada belirlenmiştir. Otun NDF, ADF ve ADL ve kül miktarı karışımlardan etkilenmemiştir. Arpanın tane hasadı zamanında, bitki boyu, başakta tane sayısı, biyolojk verim yapılan karışımlardan etkilenmezken, başak uzunluğu, hasat indeksi, arpanın tek yıllık yonca ile %100, %75, %50 karışımlarında en yüksek olmuştur. M2'deki başak sayısı, en çok Arpa+%100 Tek yıllık yonca karışımında belirlenmiştir. Arpanın bin tane ağırlığı ve tane verimi en yüksek arpayla %100 karışık ekilen tek yıllık yonca parsellerinde belirlenmiştir. Sonuç olarak, arpanın hem ot verimi ve kalitesi hem de tane verimi bakımından tek yıllık yonca ile karışık ekilmesi, özellikle de %100 tek yıllık yonca kullanılması tavsiye edilebilir. Sürdürülebilir tarım yapmak için tek yıllık baklagillerin üretime katılması gerekir.The use of medic in agriculture is indispensable for the health of the soil, plant and environment. The aim of this study was to determine the forage yield, quality and yield of barley by sowing pure barley and mixed barley with medic (Medicago orbicularis) at the rates of 100%, 75%, 50% and 25%. The trial was conducted at Çanakkale Onsekiz Mart University Dardanos Campus in 2022-2024. Randomized blocks were set up in dry conditions in autumn in three repetitions according to the experimental design. According to the results of two years, the highest green and hay yield was obtained from the mixture of Barley + 100% Medic. While the crude protein ratio of the forage was highest in the Barley + Medic mixture, the lowest was determined in pure barley. NDF, ADF, ADL and ash content of the forage were not affected by the mixtures. At the time of grain harvest of barley, plant height, number of grains per spike, and biological yield were not affected by the mixtures, while ear length and harvest index were highest in 100%, 75%, 50% mixtures of barley with annual alfalfa. The number of ears per M2 was determined mostly in the Barley + 100% Medic mixture. The thousand grain weight and grain yield of barley were highest in medic plots planted 100% mixed with barley. As a result, it may be recommended to plant barley mixed with medic, especially using 100% medic, in terms of both forage yield and quality and grain yield. In order to achieve sustainable agriculture, annual legumes must be included in production
Efficient one-pot strategy for fluorescent conjugated polymers derived from 8-amino-1-naphthalene-3,6-disulfonic acid: Synthesis, thermal and optical properties
No full textSchiff base polymers, also known as poly(imines) or poly(azomethine)s, constitute a subset of conjugated polymers. The Schiff base compound was synthesized via the condensation reaction between 8-amino-1-naphthalene-3,6-disulfonic acid and 4-hydroxybenzaldehyde. Subsequently, both 8-amino-1-naphthalene-3,6-disulfonic acid and its Schiff base derivative were polymerized into a poly(naphthol) (PANAPDSA) and Schiff base polymer (PANAPDSASB) under alkaline condition using H2O2 (35 % aqueous solution) as oxidant via oxidative polycondensation (OP). The chemical structures of the synthesized compounds were approved using NMR, FT-IR, UV-Vis, element and LC-MS/MS spectroscopic techniques. The synthesized polymers exhibited lower optical and electrochemical band gaps compared to their respective monomers, suggesting their potential utility as semiconductor materials. The poly(naphthol) derivative exhibited high fluorescent emission intensity of 1000 a.u. when excited at 300 nm with a photoluminescence (PL) emission quantum yield of 13.6 % at 392 nm of emission wavelength in N,N-dimethylformamide (DMF) solution. Weight average molecular weight (Mw) values of PANAPDSA and PANAPDSASB ranged from 9500 Da to 11200 Da, with PDI values between 1.12 and 1.13. The synthesis of conjugated polymers could hold significant importance in technological advancements