Recep Tayyip Erdoğan Üniversitesi Kurumsal Akademik Arşivi
DSpace@RTEÜ, Recep Tayyip Erdoğan Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve yayınların etkisini artırmak için telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Tracing historical river connectivity through freshwater fish assemblages: The case of Göksu river and lake Beyşehir
(Wiley, 2025) Kaya, Cüneyt; Aksu, İsmail; Aksu, Sadi; Kocabaş, Mehmet; Kurtul, Irmak; Turan, Davut
he present study documents the first records of Oxynoemacheilus angorae and Oxynoemacheilus eregliensis in the Göksu River within the Mediterranean basin, which points to historical connectivity between the Göksu River and Lake Beyşehir systems. Whereas O. angorae is mainly distributed in the Western Black Sea, Marmara and Lakes Region, O. eregliensis, previously restricted to the Beyşehir basin, Yeşildere region in Central Anatolia and the Manavgat drainage in southern Anatolia, was identified through morphological and molecular analyses (COI barcode), confirming their taxonomic status. A review of topographical data indicates that the headwaters of the Göksu River and the Lake Beyşehir basin are separated by only minor elevation differences, with no significant mountain or hill barriers, highlighting their close proximity. This observation provides evidence that some geological changes may have resulted in partial deflection of the water flow, allowing the dispersion of freshwater species across these systems, ultimately leading to their disjunct distribution. The occurrence of common fish species between them is also indicative of a link in the past and pinpoints the role of geomorphological processes on freshwater diversity.
Revealing cooperative load-bearing mechanisms between mine backfill and rock pillar using a bonded-block modeling approach
(Multidisciplinary Digital Publishing Institute (MDPI), 2025) Yan, Baoxu; Jia, Hanwen; Liu, Penghao; Yılmaz, Erol
This study investigates how mine backfill interacts with pillars to enhance load-bearing mechanisms in underground mining using the bonded-block modeling method. Through systematic numerical simulations of single- and three-pillar systems, we evaluate critical design parameters—backfill ratio, backfill’s cohesion, lateral confinement pressure, and pillar height-to-width ratio—to quantify their effects on cooperative load-bearing behavior. Key findings reveal that backfill provides essential horizontal passive support to pillars, with this stabilizing effect amplifying as the pillars fragment or undergo lateral expansion. Increasing the backfill-to-roof contact ratio due to the lateral expansion and squeezing effect of the pillar to the adjacent backfill strengthens the lateral constraints, reducing the tensile failures and axial crack propagation in the pillars at peak stress. In multi-pillar configurations, higher backfill cohesion improves system stability by redistributing loads across adjacent structures. Practical guidelines are proposed. Low-cohesion backfill with high filling ratios is recommended for single pillars to absorb energy during sudden failures, while high-cohesion backfill optimizes stability in multi-pillar systems. These insights advance the design of safer and more efficient backfill–pillar support systems in mining engineering.
Aşırı i̇ş yükünün, i̇ş-aile çatışmasının aracılığında ve i̇ş becerikliliğin düzenleyiciliğinde görev performansına etkisi
(Sosyoekonomi Society, 2025) Savcı, Mustafa; Açaray, Ali
The study aims to investigate the effect of work overload on task performance mediated by work-family conflict and moderated by job crafting. The research was conducted using a quantitative research design, analysing the data collected through a face-to-face survey. The questionnaires were completed by accounting professionals registered with the Chamber of Accountants in all districts of Rize Province. Data were collected from 109 professional members. The collected data were analysed using SPSS and Smart PLS 4 statistical programs. As a result of the analysis, it was determined that work overload negatively affected task performance. Contrary to expectations, the work-family conflict did not mediate this effect. Job crafting was found to play a moderating role in this effect. The moderator role of job crafting is a novel and unique contribution to the literature.
The importance of non-precarious employment and its relationship with broadly defined unemployment: Fourier-shin approach
(Sosyoekonomi Society, 2025) Aygün Alıcı, Vildan; Kızıltan, Alaattin
This study aims to emphasise the importance of a skilled labor force within the context of Türkiye’s Decent Work Policy. It examines the long-term relationship between non-precarious employment and broadly defined unemployment, using quarterly data from 2009 to 2023. The long-term relationship between the series, found to be stationary at the first difference, was analysed by using the Fourier-Shin cointegration test. Given the results of FMOLS, DOLS, and CCR estimators, all results were statistically significant. It was concluded that broadly defined unemployment caused a change between 0.66% and 0.69% in non-precarious employment in the long term, and the opposite effect occurred. The study’s calculation of non-precarious employment and broadly defined unemployment variables, as well as the examination of the relationship between these two variables for the first time, makes the study original.
Yurtiçi tasarruf oranları üzerine bir mekânsal etki incelemesi: AB-15 ülkeleri ve Türkiye
(Sosyoekonomi Society, 2025) Ayla, Dilara
The study, employing the Spatial Durbin Error Model (SDEM), focuses on a comparative analysis of two periods, distinguished by the 2008 global financial crisis. In this context, findings from the 1987-2008 period showed that government expenditures, income inequality, and increases in the dependent population reduced domestic savings. It has been demonstrated that increases in net migration and trade openness levels have a positive impact on savings. The spatial impact results of this period were positive for openness and the dependent population ratio. According to the results from 2009 to 2021, the variables with statistical significance were identified as government expenditures and openness. The spatial effects during the 2009-2021 period were in the same direction as those in the first period, regarding the dependent population. In addition, the increases in government expenditures of neighbouring countries in the post-crisis period led to a rise in savings rates.
