4441 research outputs found
Sort by
Developing a novel hybrid model based on GRU deep neural network and Whale optimization algorithm for precise forecasting of river’s streamflow
No full textStreamflow contemplates a fundamental criterion to evaluate the impact of human activities and climate changes on the hydrological cycle. In this study, a novel innovative deep neural network (DNN) structure by integrating a double Gated Recurrent Units (GRU) neural network model with a multiplication layer and meta-heuristic whale optimization algorithm (WOA) (i.e., hybrid 2GRU×–WOA model) is developed to improve the prediction accuracy and performance of mean monthly Chehel-Chai River’s streamflow (CCRSFm) in Iran. The Pearson’s correlation coefficient (PCC) and Cosine Amplitude Sensitivity (CAS) as feature (input) selection process determine the only precipitation (Pm) as the most effective input variable among a list of on-site potential climate time series parameters recorded in the study area. Thanks to a well-proportioned layer network structural framework in the suggested hybrid 2GRU×–WOA model, it leads to an appropriate total learnable parameter (TLP) compared to standard individual GRU and Bi-GRU as the benchmark models developed in the comparable meta-parameters. This hybrid model under the optimal meant meta-parameters tuned i.e., coupling a state activation functions (SAF) of tanh-softsign, dropout rate (P-rate) of 0.5, numbers of hidden neurons (NHN) of 70, outperforms with an R2 of 0.79, NSE of 0.76, MAE of 0.21 (m3/s), MBE of -0.11(m3/s), and RMSE of 0.36 (m3/s). Hybridizing the 2GRU× model with WOA algorithm causes to increase in the value of R2 by 6.8% and reduce in the value of RMSE by 20.4%. Comparatively, standard individual GRU and Bi-GRU models result in an R2 of 0.59 and 0.66, NSE of 0.55 and 0.6, MAE of 0.91 and 0.53 (m3/s), MBE of 0.047 and − 0.06 (m3/s), RMSE of 1.29 and 0.83 (m3/s), respectively. © The Author(s) 2025
Travma sonrası stres belirtileri ile travma sonrası büyüme arasındaki ilişkide psikolojik sağlamlık ve ruminasyonun aracı rolünün incelenmesi
Full text linkBu çalışma, travma sonrası stres belirtileri ile travma sonrası büyüme (TSB) arasındaki ilişkide psikolojik sağlamlık ve ruminasyonun aracı rolünü incelemek amacıyla yapılmıştır. Araştırma, zorlu yaşam olayına maruz kalan 18 yaş üstü 407 yetişkin katılımcıyla gerçekleştirilmiştir. Travmatik stresin olumsuz etkilerini anlamak, travma sonrası büyümenin mekanizmalarını keşfetmek ve bu süreçte psikolojik sağlamlık ile ruminasyonun etkilerini değerlendirmek amaçlanmıştır. Araştırmada, veri toplama araçları olarak Travmatik Yaşantı Tarama Listesi, Olayların Etkisi Ölçeği, Olaylarla İlişkili Ruminasyon Envanteri, Connor-Davidson Psikolojik Sağlamlık Ölçeği Kısa Formu ve Travma Sonrası Büyüme Envanteri kullanılmıştır. Araştırma kapsamında, travma sonrası stres belirtileri (TSSB), travma sonrası büyüme (TSB) ve psikolojik sağlamlık ile ruminasyonun cinsiyete ilişkin özelliklere göre farklılaşma durumunu incelemek için Bağımsız Gruplar t-testi, değişkenler arasındaki ilişkileri incelemek için Pearson Momentler Korelasyon Analizi uygulanmıştır. Ruminasyon ve psikolojik sağlamlığın aracı rolünü incelemek amacıyla SPSS Process Macro eklentisinin 4.2 versiyonu kullanılmıştır. Analiz sonuçlarında çıkan bulgulara göre TSSB belirtilerinin kadın katılımcılarda erkek katılımcılara göre daha fazla görüldüğü sonucuna ulaşılmıştır. Ayrıca ruminasyon ve travma sonrası büyüme düzeylerinin kadın katılımcılarda daha fazla olduğu saptanmıştır. Bulunan sonuçlara göre TSSB belirtileri ile psikolojik sağlamlık arasında pozitif yönde bir ilişki bulunurken bu ilişkinin istatistiksel olarak anlamlı çıkmaması psikolojik sağlamlığın TSSB belirtileri ile travma sonrası büyüme arasındaki ilişkiye aracılık etmediğini göstermiştir. Ancak, TSS belirtileri ile travma sonrası büyüme arasındaki ilişkide ruminasyonun kısmi aracı rolü olduğu sonucuna ulaşılmıştır. Araştırmadan elde edilen bu bulgular ilgili literatür doğrultusunda tartışılmıştır. Araştırmanın sınırlılıklarına ve gelecek çalışmalar için önerilere yer verilmiştir.This study was conducted to examine the mediating role of psychological resilience and rumination in the relationship between posttraumatic stress symptoms and posttraumatic growth (PTG). The study was conducted with 407 adult participants over the age of 18 who were exposed to a challenging life event. It was aimed to understand the negative effects of traumatic stress, to explore the mechanisms of posttraumatic growth and to evaluate the effects of psychological resilience and rumination in this process. In the study, Traumatic Experience Screening List, Impact of Events Scale, Event-Related Rumination Inventory, Connor-Davidson Resilience Scale Short Form and Posttraumatic Growth Inventory were used as data collection tools. Within the scope of the study, Independent Groups t-Test was used to examine the differentiation of posttraumatic stress symptoms (PTSD), posttraumatic growth (PTS), psychological resilience and rumination according to gender-related characteristics, and Pearson Moment Correlation Analysis was applied to examine the relationships between variables. SPSS Process Macro plug-in version 4.2 was used to examine the mediating role of rumination and psychological resilience. According to the results of the analyses, it was concluded that PTSD symptoms were more common in female participants than male participants. In addition, it was found that the levels of rumination and posttraumatic growth, except psychological resilience, were higher in female participants. According to the results, while there was a positive relationship between PTS symptoms and psychological resilience, the fact that this relationship was not statistically significant showed that psychological resilience did not mediate the relationship between PTS symptoms and posttraumatic growth. However, it was concluded that rumination has a partial mediating role in the relationship between PTS symptoms and posttraumatic growth. These findings obtained from the study were discussed in line with the relevant literature. Limitations of the study and suggestions for future studies are given
Effects of Dual-Task Stroboscopic Visual Training on Balance, Functional Mobility, and Gait in Children Who Are Hard-of-Hearing: A Exploratory Randomized Controlled Study
Full text linkObjective: This study aimed to investigate the effects of dual-task stroboscopic visual training (DTSVT) on balance, functional mobility, and gait in children who are hard-of-hearing. Methods: This randomized controlled study included 31 children (17 girls, 14 boys) with congenital sensorineural hearing loss. Participants were assigned to one of three groups: control group, conventional balance training (CBT) group, and DTSVT group. The CBT and DTSVT groups participated in an exercise program for 16 weeks, twice weekly, for 40 min (a total of 24 sessions). Static balance was assessed using the Tandem Romberg test and Single-Leg Stance (SLS) test, while dynamic balance was evaluated using the Functional Reach Test (FRT), balance disc test, and the Four Square Step Test (FSST). The Pediatric Balance Scale (PBS) was used as a subjective balance assessment. Functional mobility was assessed using the Timed Up and Go (TUG) Test, Step Test, 10 m Walk Test (10 MWT), and Functional Gait Assessment (FGA). Postural sway parameters were recorded using the GyKo device, including Sway Area (EA, cm2), Distance Length (DL, cm), Length (anterior–posterior (AP)) (cm), Length (medial–lateral (ML)) (cm), Mean Distance (D) (cm), Mean Distance (AP) (cm), and Mean Distance (ML) (cm). Results: Significant between-group differences were primarily observed in favor of the DTSVT group post-treatment, particularly in PBS scores, GyKoDL values during the eyes-open SLS test, and TUG test completion times (p < 0.05). Some baseline differences were noted among groups in functional reach distance, FSST completion time, and eyes-closed duration on the Balance Disc test (p < 0.05). Within-group comparisons revealed significant improvements in FSST times in both intervention groups, reduced postural sway parameters during the FRT in the DTSVT and control groups, and increased eyes-closed Tandem Romberg duration in the CBT group (p < 0.05). Most other outcome measures did not demonstrate statistically significant changes either within or between groups (p > 0.05). Conclusions: Dual-task stroboscopic visual training was more effective than conventional balance training in improving specific aspects of balance and functional mobility in children who are hard-of-hearing. These findings highlight the potential of adding cognitively demanding and visually engaging balance tasks to rehabilitation programs for this population. Larger and more diverse samples in future studies are needed to enhance the generalizability of these results. Studies that assess balance and gait using standardized clinical or laboratory tests may be particularly valuable. Given the small sample size and multiple comparisons, the results should be considered preliminary and exploratory. © 2025 by the authors
Analysing the Drivers of Cropland Footprint in Leading Agricultural Nations: Evidence From MMQR Approach
Full text linkClimate change represents the biggest current challenge for us and for future generations. Its impact on agriculture is undeniable, considering the food security goal. Thus, the cropland footprint has been distinguished as a comprehensive index for assessing the impact of environmental changes in agricultural areas determined by the increased living standards of people and consumption habits. This paper investigates the determinants of the cropland footprint in the top 10 agricultural countries from 1991 to 2021. Among the determinants considered are GDP per capita, urbanisation rate, employment in agriculture, arable land, fertiliser consumption and annual mean temperature. The second-generation panel data analysis technique MMQR was used in the study, after checking for Durbin-Hausman co-integration and the Pesaran CSD test. The results reveal that arable land significantly increases the cropland footprint in higher quantiles (e.g., coefficient = 0.0053 at the 0.90 quantile), while fertiliser consumption shows a significant negative effect across most quantiles (e.g., coefficient = -0.0543 at the 0.30 quantile). Additionally, GDP per capita positively influences the cropland footprint across all quantiles (e.g., coefficient = 0.2138 at the 0.50 quantile). The results from the MMQR analysis suggest that arable land has a significant and positive impact on the cropland footprint in medium and high quantiles. Additionally, fertiliser consumption and GDP per capita demonstrate significant negative and positive impacts, respectively, on the cropland footprint across almost all quantiles. Conversely, urbanisation, annual average temperature and agriculture employment do not significantly impact the cropland footprint. Based on the results, we can state that using fertilisers can help diminish the cropland footprint by increasing the fertility and productivity of the cultivated areas. At the same time, increased GDP per capita and enlarged arable land will increase the cropland footprint. In the context of robust economic growth, fertilisers are important factors to decrease the cropland footprint as a result of using large arable lands for crop purposes
Evaluation of the knowledge, attitudes, and practices of intensive care unit nurses regarding eye care: A descriptive study
Full text linkEye care is an essential component of nursing practices in intensive care units (ICUs) due to the vulnerability of critically ill patients to ocular complications. The study aims to evaluate ICU nurses' knowledge, attitudes, and practices regarding eye care. This descriptive study, involved 207 ICU nurses from Turkey. Data were collected using the Nurse Introductory Information Form and the Eye Care Clinical Competence Questionnaire. The nurses' mean age was 34.37 +/- 7.81. The study found that 54.1% did not record eye problems, and 25% cited excessive paperwork as a barrier. Nurses who followed current studies scored higher on the Eye Care Clinical Competence Questionnaire (p = 0.036). Additionally, holding an intensive care certificate significantly improved application sub-dimension and total scale scores (p = 0.020, p = 0.023). Educational level significantly impacts ICU nurses' ability to provide eye care, though they face various obstacles in its delivery
Academic Resilience Scale for Adolescents in Turkey: Relationship with School Burnout and School Attachment
Full text linkAcademic resilience is the capacity of students who encounter various risk factors to show positive adaptation despite these difficulties. The aim of this study is to develop a multidimensional scale, based on Ecological Systems Theory, to determine adolescent students' levels of academic resilience and the resources of academic resilience they have. For this purpose, a scale study was carried out with a sample group consisting of 695 students who continue their secondary and high school education. Exploratory factor analysis was conducted to find out the factor structure of the developed scale. A scale consisting of 27 items and four sub-dimensions was formed. Confirmatory Factor Analysis revealed that the scale's factor structure showed good fit. Secondary factor analysis also confirmed that the sub-dimensions meaningfully converged under the superstructure of academic resilience. The findings show that all sub-dimensions made a meaningful contribution to the superstructure. Furthermore, negative relationships were found between academic resilience and school burnout, while positive relationships were found with school attachment
Psychological resilience and valued living as mediators in the relation between moral injury and attitudes toward future among Turkish adults
Full text linkBackground: Moral injury exacerbates poor outcomes, such as negative attitudes toward the future; however, the potential underlying mechanisms of this association remain unknown. This present study aimed to disentangle the pathways linking moral injury to confidence toward the future through the serial mediation effect of psychological resilience and valued living in a Turkish population. Methods: The data analyzed were collected from representative samples of adult aged 18–65 years living in Gaziantep Province, Turkey. A total of 681 participants (77.7% female, mean age = 25.05) were included in this study. Structural equation modeling (SEM) was used to analyze the relationships among the variables. Results: Indirect effects of moral injury on confidence toward the future were found. The direct effect of moral injury on attitudes toward the future in the presence of mediators was not significant (b = 0.014, p > 0.05). Thus, we concluded that there was a fully serial mediation by psychological resilience and valued living in the relationship between moral injury and attitudes toward the future (b = -0.077, 95% bootstrap CI: -0.115 to -0.048). Limitations: The main constraint of this study was its cross-sectional design, which restricted the capacity for causal inference. Conclusions: These findings highlight the role of psychological resilience and valued living as serial mediators in the relationship between moral injury and confidence toward the future. Therefore, mental health professionals or clinicians incorporating intervention programs aimed at enhancing psychological resilience and promoting valued living could be beneficial, especially for individuals who have experienced moral injuries. Employing a multifaceted therapeutic approach may be advantageous in addressing these concerns. © The Author(s) 2025
Academic Resilience Scale for Adolescents in Turkey: Relationship with School Burnout and School Attachment
No full textAcademic resilience is the capacity of students who encounter various risk factors to show positive adaptation despite these difficulties. The aim of this study is to develop a multidimensional scale, based on Ecological Systems Theory, to determine adolescent students’ levels of academic resilience and the resources of academic resilience they have. For this purpose, a scale study was carried out with a sample group consisting of 695 students who continue their secondary and high school education. Exploratory factor analysis was conducted to find out the factor structure of the developed scale. A scale consisting of 27 items and four sub-dimensions was formed. Confirmatory Factor Analysis revealed that the scale’s factor structure showed good fit. Secondary factor analysis also confirmed that the sub-dimensions meaningfully converged under the superstructure of academic resilience. The findings show that all sub-dimensions made a meaningful contribution to the superstructure. Furthermore, negative relationships were found between academic resilience and school burnout, while positive relationships were found with school attachment
Metabolic–Nutritional Associations with Depression in Elderly Chronic Kidney Disease Patients: Hemodialysis Versus Non-Dialysis Populations
No full textBackground/Objectives: This study aimed to evaluate the interrelationship between depression and nutritional–metabolic status in geriatric patients with chronic kidney disease (CKD), and to identify the contributing clinical and sociodemographic factors, with a particular focus on differences between patients receiving and not receiving hemodialysis treatment. Methods: This cross-sectional descriptive study was conducted between September 2023 and September 2024 in Gaziantep, Turkey. A total of 152 CKD patients aged 65 years and older were included, with 78 receiving hemodialysis and 74 managed without dialysis. Nutritional status was assessed using the Mini Nutritional Assessment—Short Form (MNA-SF), and depression levels were measured using the Geriatric Depression Scale—Short Form (GDS-SF). Laboratory parameters such as hemoglobin and serum albumin were also recorded. Results: A total of 152 geriatric CKD patients were included, with 78 (51.3%) undergoing hemodialysis and 74 (48.7%) not receiving dialysis. The non-dialysis group had significantly higher age (77.07 ± 8.61 vs. 70.13 ± 7.76 years, p = 0.001) and BMI (28.44 ± 4.70 vs. 25.18 ± 4.75, p = 0.001). Serum albumin levels were lower in non-dialysis patients (2.53 ± 0.67 vs. 3.50 ± 0.465 g/dL, p < 0.001), while hemoglobin (12.44 ± 2.03 vs. 11.16 ± 1.92 g/dL, p = 0.001) and ALT levels (17.16 ± 13.06 vs. 8.53 ± 4.31 U/L, p = 0.001) were higher. Malnutrition was more frequent among non-dialysis patients (20.3% vs. 9.0%, p = 0.033). Although depression was more common in this group, the difference was not statistically significant (p = 0.091). A moderate negative correlation was observed between MNA-SF and GDS-SF scores (r = −0.426, p < 0.01). Serum albumin positively correlated with MNA-SF (r = 0.374, p < 0.01) and negatively with GDS-SF (r = −0.323, p < 0.01). Conclusions: Malnutrition was more frequent among elderly CKD patients not receiving hemodialysis, whereas depression prevalence did not differ significantly between groups. A significant correlation between nutritional status (MNA-SF, serum albumin) and depressive symptoms (GDS-SF) was observed in the overall CKD cohort, underscoring the close interplay between metabolic and psychological health in this population. These results highlight the need for routine screening and integrated management of both nutrition and mental health in elderly CKD patients, and future longitudinal studies are warranted to determine causal pathways and predictive value. © 2025 by the authors
Biopsychosocial model-based exercise improves muscle strength, proprioception, pain, function, and quality of life in rheumatoid arthritis patients with knee involvement: a randomized controlled clinical trial (vol 45, 221, 2025)
No full textIn this article, the title · “Biopsychosocial model-based exercise improves muscle strength, proprioception, pain, function, and quality of life in rheumatoid arthritis patients with knee involvement: a randomized controlled clinical trial” “Biopsychosocial model-based exercise improves muscle strength, proprioception, pain, function, and quality of life in rheumatoid arthritis patients with knee involvement: a randomized controlled clinical tiral” Was incorrect, but it should have been read as Now, The Original article has been corrected. Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations