Scopus İndeksli Yayınlar Koleksiyonu

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The Association of Subordinates' Perception of the Manager's Ambiguous Behaviors with the Likelihood of Conflict Occurrence: A Cross-Cultural Study
(IACM-NCMR-INT Assoc Conflict Management, 2024) Honuk, Hizir; Kucuk, Burcu Aydin; Caglar, Cihan Tinaztepe
The research aims to provide evidence to explain the contradictive findings in the literature on the organizational conflict phenomenon and the relationship between conflict and culture, by focusing on the relationship between ambiguous behaviors and conflict. To achieve this goal, in the context of low-status compensation theory, the relationship between incivility, humor as ambiguous behaviors, and the likelihood of manager- subordinate conflict occurrence was investigated. To test the culture's effect on this relationship, survey data were collected from 478 white-collar subordinates working in SMEs in Turkey and the UK. According to the results, the subordinate's perception of the manager's ambiguous behaviors affects the likelihood of relationship conflict and task conflict occurrence. In addition, the study reveals that culture is associated with the likelihood of relationship conflict occurrence but not task conflict. The study contributes to the literature by providing evidence for the relationship between humor, incivility, conflict, and culture.
Causes of Intimate Partner Homicide: Gender Differences in Empathy, Psychopathy, and Perceived Social Support
(Kare Publishing, 2022) Topcu, A.L.; Görgülü, T.; Erden, G.
Objective: Intimate partner homicide (IPH) and attempted murder behaviors have increased in recent years. In addition, the causes of partner murder are affected by gender dynamics. This study aims to determine whether individuals who committed murder and attempted murder toward their partners differ in terms of empathy, psychopathy, and perceived social support and to determine the predictive variables of IPH toward their partners. Method: This study was carried out with a total of 123 participants (73 women and 50 men) from 10 different prisons. Demographic Information Form, Empathic Tendency Scale, Levenson Self-Report Psychopathy Scale, and Multidimensional Scale of Perceived Social Support were used. Results: A value of 82.19% of women and 60.97% of men were charged with killing their partners. Of these, 24% of women and 7% of men killed their partners by planning. The psychopathy scores of men (56.92±8.45) were found to be higher than women (52.73±8.98). The results of the logistic regression analysis indicate that the behaviors of women to kill and attempt to kill their partners are best predicted by physical violence from their partner, feelings of jealousy toward their partner, and perceived weak social support from a significant other and family. It was found that the best predictive variable for IPH in men was physical violence against their partners during their relationships. Conclusion: It has been evaluated that having insufficient social support and experiencing physical violence from their partners are associated with IPH among women. This result suggests that women use violence against their partners to protect themselves from violence. On the other hand, the physically violent behaviors of men toward their partners during their relationship are an important variable for IPH. © 2022 Yerkure Tanitim ve Yayincilik Hizmetleri A.S.. All rights reserved.
Design and Simulation of the Microcantilever Biosensor for MITF Antigen and D5 Monoclonal Antibody Interaction Finite Element Analysis, and Experimental
(Bentham Science Publishing Ltd, 2024) Akcali, Pelin; Kelleci, Kubra; Ozer, Sevil
Background Biosensors and MEMS have witnessed rapid development and enormous interest over the past decades. Constant advancement in diagnostic, medical, and chemical applications has been demonstrated in several platforms and tools. In this study, the analytical and FEA of the microcantilever used in biomolecular analyses were compared with the experimental analysis results.Methods In this study, MITF antigen, which is a melanoma biomarker, and anti-MITF antibody (D5) were selected as biomolecules. A MEMS-type microcantilever biosensor was designed by functionalizing the AFM cantilever by utilizing the specific interaction dynamics and intermolecular binding ability between both molecules. Surface functionalization of cantilever micro biosensors was performed by using FEA. The stress that will occur as a result of the interactions between the MITF-D5 has been determined from the deviation in the resonant frequency of the cantilever.Results It has been found that the simulation results are supported by analytical calculations and experimental results.Conclusion The fact that the results of the simulation study overlap with the experimental and mathematical results allows us to get much cheaper and faster answers compared to expensive and time-consuming experimental approaches.
Detection of Damaged Structures from Satellite Imagery Processed by Autoencoder with Boruta Feature Selection Method
(AVES, 2023) Muzoglu, Nedim; Adiguzel, Ertugrul; Akbacak, Enver; Karaslan, Melike Kaya
Many worldwide changing events, including meteorology, weather forecasting, disaster response, and environmental monitoring, are tracked by states or companies via satellite imagery. Early response to disasters is critical for human life. In these cases, artificial intelligence applications are also used to make rapid determinations about large geographical region. In this study, satellite images of flooded and undamaged structures in Hurricane Harvey were used. An autoencoder process has been applied to this dataset to reduce the noise in satellite imagery. AlexNet and VGG16 deep learning (DL) models are used to extract features from both datasets. The most effective features selected by the Boruta feature selection algorithm were classified with the support vector machine, and the highest classification accuracy of 99.35% was obtained. Since disasters involve the evaluation of very big datasets from large geographic areas, presenting the data with the smallest possible feature will facilitate the process. For this reason, by applying dimensionality reduction to the selected attributes, a 98.29% success was achieved in the classification with only 90 attributes. The proposed approach shows that DL and feature engineering are very effective methods to quickly respond to disaster areas using satellite imagery.
The Effects of SNAI1 rs6125849 Gene Polymorphism on Metastasis and Survival in Colorectal Cancer: Preliminary Results from Turkish Subjects
(Elsevier, 2021) Cevik, Mehtap; Namal, Esat; Sener, Nur Dinc; Koksal, Ulkuhan Iner; Deliorman, Gokce; Ciftci, Cavlan; Susleyici, Belgin
Background: Since metastasis is one of the leading causes of high mortality in colorectal cancer, uncovering the molecular mechanisms underlying metastatic process has become important to find new treatment approaches. With this perspective, in this study we investigated effects of epithelial-mesenchymal transition (EMT) inducer SNAI1 rs6125849 gene polymorphism on different features of colorectal cancer. Material and methods: A total of 141 Turkish subjects consisting of 72 colorectal cancer patients and 69 healthy controls were included in the study. SNAI1 rs6125849 genotype analyses were performed with Agena MassARRAY platform. Results: We did not find any significant difference between case and control groups for rs6125849 genotypes. All metastatic patients were detected to have homozygous mutant (AA) genotype. Heterozygous and homozygous mutant genotypes (GA + AA) were more common in metastatic colorectal cancer patients compared to those with homozygous wild type (GG) genotype (p = 0.066). We also detected positive, albeit low but significant correlation between rs6125849 genotypes in codominant and dominant models (r = 0.250, p = 0.034 and r = 0.234, p = 0.048, respectively). Overall survival times was found to be considerably higher patients with A allele (Log rank: 3.04, p = 0.081). Conclusion: According to our preliminary results, we may speculate that SNAI1 gene G > A variation may result with a metastatic phenotype and shorter overall survival. Due to limited number of patients in our study group, further in vitro and in vivo studies are required to understand the role of SNAI1 rs6125849 variation on metastasis and survival functions.
Ericksonian Hypnotherapy: A Systematic Review and Meta-Analysis of RCTs
(Multidisciplinary Digital Publishing Institute (MDPI), 2026) Çınaroğlu M.; Yılmazer E.; Noyan Ahlatcıoğlu E.
Ericksonian hypnotherapy (EH), a client-centered hypnotic approach characterized by indirect suggestion, individualized flexibility, collaboration, and the principle of Utilization, has seen increased interest as a therapeutic modality across diverse clinical settings. This systematic review and meta-analysis aimed to evaluate the efficacy of EH by synthesizing evidence from randomized controlled trials (RCTs) published between 2015 and 2025. Eight eligible RCTs (N = 676) were identified, spanning conditions such as acute pain, depression, grief, irritable bowel syndrome, disordered eating, and alcohol use. EH interventions consistently produced significant symptom reductions compared to waitlists or standard care, with a pooled standardized mean difference of 1.17 (95% CI: 0.70–1.64), indicating a large effect. Moreover, trials comparing EH to active treatments (e.g., CBT, motivational interviewing) revealed comparable efficacy, with pooled estimates supporting non-inferiority. Sensitivity analyses confirmed the robustness of these findings. Notably, some trials suggested that the indirect and personalized nature of EH may confer advantages in domains like grief and hypervigilance. Although evidence remains limited by sample size and heterogeneity, this review provides initial empirical support for EH and supports its inclusion in the evidence-based repertoire for both physical and psychological conditions. Future research should examine mechanisms of change and individual predictors of response to optimize the use of this distinctive hypnotic style. © 2026 by the authors.
Evaluation of the Descriptive Values and Occlusion Effects of Air and Bone Conducted Cervical Vestibular Evoked Myogenic Potentials in Normal Individuals
(Springer, 2022) Tasci, Betul; Gencturk, Ertugrul; Serbetcioglu, Mustafa Bulent
Objective:This study was aimed to establish the descriptive statistical values of cVEMPs's responses which are evoked by air and bone conducted stimuli and to examine the effects of occlusion on bone conducted (BC) cVEMPs test. Methods:The study was carried out on 20 individuals (n = 40 ears), 11 women and 9 men, at the Medipol Mega University Hospital. cVEMPs tests were applied in five stages to the individuals who are volunteer to participate in this study. Firstly, the air conducted (AC) cVEMPs test was applied. Then, BC cVEMPs tests were applied in four different conditions with the aim of examining the occlusion effect. Results:Latency values of the AC cVEMPs response were 15.17 +/- 0.77 ms for P1 and 24.12 +/- 1.38 ms for N1 and 8.95 +/- 1.12 ms for interpeak latencies. P1N1 amplitude value was 149.73 +/- 75.00 mu V. VEMPs asymmetry ratio (VAR) was 0.16 +/- 0.16. Latency measurements of the BC cVEMPs response were 14.38 +/- 0.85 ms for P1 and 23.40 +/- 1.50 ms for N1 and 9.05 +/- 1.57 ms for interpeak latencies. P1N1 amplitude value was 107.58 +/- 54.08 mu V. VAR was 0.15 +/- 0.12. Both AC cVEMPs and BC cVEMPs parameters were demonstrated that there are not any significant differences between female-male and left ear-right ear. When AC and BC cVEMPs responses were compared, the mean P1 and N1 latencies of BC cVEMPs were significantly shorter than those of AC cVEMPs (p < 0.01). The mean amplitudes of AC cVEMPs were significantly larger than those of BC cVEMPs (p < 0.01). When the impact of the occlusion effect on cVEMPs parameters was examined, no statistical significance was found. Conclusion:As a result, it was thought that the BC cVEMPs, which is not widely used in clinics, might be used in the vestibular assessment of conductive hearing losses (CHL) in clinics, by obtaining descriptive values with this study. In addition, it was thought that it might be used as an auxiliary test to diagnose patients with hyperacusis who are disturbed by loud noises.
Exploring the Psychological and Social Dynamics of Steroid and Performance-Enhancing Drug (PED) Use Among Late Adolescents and Emerging Adults (16-22): A Thematic Analysis
(MDPI, 2025) Cinaroglu, Metin; Yilmazer, Eda; Noyan Ahlatcioglu, Esra
Background: Performance-enhancing drug (PED) use has become increasingly prevalent among adolescents and emerging adults, not solely for athletic advantage but as a psychological and sociocultural coping mechanism. In T & uuml;rkiye, where Westernized body ideals intersect with traditional values, the emotional and symbolic meanings of PED use among youth remain underexplored. Methods: This qualitative study employed semi-structured interviews and reflexive thematic analysis to examine the subjective experiences of 26 Turkish adolescents and emerging adults (19 males, 7 females; ages 16-22) in Istanbul who reported non-medical use of steroids or other PEDs. Participants were recruited through snowball sampling in gym-adjacent communities across six urban districts. Interviews were conducted online, recorded, transcribed, and analyzed to identify emergent psychological themes. Results: Six interconnected themes were identified: (1) body-based insecurity and the fantasy of reinvention; (2) emotional regulation through bodily control; (3) secrecy as autonomy; (4) compulsive enhancement and dissatisfaction; (5) psychological dependency and regret; and (6) PED use as agency and protest. While male and female participants differed in aesthetic goals and social narratives, both groups framed PED use as a means of identity construction, emotional survival, and social validation. Participants did not perceive themselves as deviant but as strategic actors navigating a performance-driven culture. Conclusions: PED use among youth in urban T & uuml;rkiye emerges as a psychologically embedded coping mechanism rooted in emotional regulation, self-concept, and perceived control. Rather than a deviant behavior, it reflects an adaptive but precarious strategy for managing insecurity and achieving recognition during a critical developmental stage.
Finding Compromise Solutions for Fully Fuzzy Multi-Objective Linear Programming Problems by Using Game Theory Approach
(IOS Press, 2022) Temelcan, Gizem; Kocken, Hale Gonce; Albayrak, Inci
Solving multi-objective linear programming (MOLP) problems and fully fuzzy multi-objective linear programming (FFMOLP) problems involves the trade-off process among several objectives. A new algorithm extended where FFMOLP problems are solved using a 2-player zero-sum game approach to deal with this case. Firstly, The FFMOLP problem is separated into a certain number of fully fuzzy linear programming (FFLP) problems and each is solved by applying any method. After forming a ratio matrix, a game theory approach is applied for finding the weights of objective functions and a weighted LP problem is constructed by these weights. Solving the weighted LP problem, a fuzzy compromise solution of the FFMOLP problem is found. Constructing different ratio matrices, it is also possible to obtain more than one compromise solution to be offered to the decision-maker(s). Some examples are given to show the applicability of the algorithm.
The Intolerance of Uncertainty Scale for Children: Reliability, Validity and Adaptation Study
(Klinik Psikiyatri dergisi, 2024) Erden, Gulsen; Celik, Cihat
Objective: The aim of this study is to adapt the Intolerance of Uncertainty Scale for Children (IUSC) into Turkish. Method: The sample of the study consists of 282 children aged 7-12 (M= 9.55, SD = 1.81) and their parents (M= 36.84, SD = 7.04). The Uncertainty Intolerance Scale (IUSC) for Children-Parent Form and Spence Anxiety Scale for Children-Parent (SASC-P) Form were used. The Cronbach Alpha internal consistency and two half test reliability coefficients were calculated for the reliability of the IUSC. Confirmatory Factor Analysis (CFA) was conducted for construct validity and the relationships between the IUSC and the SASC-Parent Form for content validity were evaluated. Results: The CFA analyzes revealed that the 12-item short form of the IUSC had good fit values, and one-factor and two-factor structure were confirmed. As a result of the analyzes significant correlations were found between the total score of the child and parent forms of IUSC-12 and the sub-factors of the SASC-P form, separation anxiety, panic attack, social phobia, obsessive compulsive disorder and agoraphobia scores (child form respectively, r = .25, r = .37, r = .40, r = .25, r = .25; p < .001; parent form respectively, r = .26 , r = .32, r = .43, r = .31, r = .22; p < .001). The reliability analyzes revealed that Cronbach Alpha coefficient for the child form of the IUSC-12 short form was .91 and for the parent form .91. The two half-test Spearman-Brown correlation coefficients were found to be r = .89 for the child form and r = .90 for the parent. Discussion: The results show that parent and child form of the IUSC-12 short form provide reliable and valid results in evaluating the intolerance of uncertainty levels of children in Turkey.
Investigation of Functional Status, Balance and Kinesiophobia in Women with Hallux Valgus Underwent Chevron Osteotomy, a Pilot Study
(Turkish Physiotherapy Association, 2022) Meran Çağlar, M.; Kinikli, G.İ.; Çaǧlar, Ö.
Purpose: The aim of this study, was to investigate functional status, balance and kinesiophobia after Chevron osteotomy in women with Hallux Valgus (HV) in comparison to non-surgical women with HV. Another aim was to compare the pre- and post-surgical radiographic values of women with HV who underwent surgery. Methods: A total of 38 individuals were included in the study, including aged 20-70 years 19 women with an average of 28 months after surgery and 19 HV women diagnosed with non-surgical. Individuals' pain intensity (Visual Analogue Scale), thumb joint range of motion (ROM) (universal goniometer), static balance (Single-Leg-Stance Test), dynamic balance (Timed Up and Go Test), functional status and cosmetic concern (Multidimensional Nil Hallux Valgus Scale), kinesiophobia (Tampa Kinesiophobia Scale) was evaluated. Results: Pain severity, cosmetic concern, ROM of the thumb and HV angle (HVA) were lower in women with HV following surgery than non-surgical HV women (p<0.001); functional scores were better than women with non-surgical HV (p<0.05). Balance and kinesiophobia scores were similar in both groups (p>0.05). However, the average kinesiophobia scores in both groups (surgical: 36.20 ± 5.35; non-surgical: 36.44 ± 5.40) were above the mean score of the scale. HVA and 1-2 intermetatarsal angle of the surgical group showed significant improvement compared to the values before surgery (p <0.001). Conclusion: The results of this study showed that the total ROM of thumb is limited and long-term post-surgical kinesiophobia in women with HV. For a comprehensive evaluation of these individuals, it should be taken into consideration that joint movements and kinesiophobia evaluations should be added to physiotherapy and rehabilitation programs before and after surgery. © 2022 Turkish Physiotherapy Association. All rights reserved.
Normalization of Masseter VEMP and Comparison with Cervical VEMP in Normal Individuals
(Springer, 2023) Kilinc, Ezgi; Gencturk, Ertugrul; Tasci, Betul; Serbetcioglu, Mustafa Bulent
ObjectiveThe objective of this study is to obtain normative data of the masseter vestibular-evoked myogenic potential (mVEMP) test in healthy individuals without hearing loss and dizziness and to compare the responses with the cVEMP test.MethodsTwenty healthy individuals (10 males and 10 females) aged 20-30 years without auditory and vestibular disorders participated in the study. First, mVEMP and then cVEMP tests were applied to the individuals who voluntarily participated in the study.ResultsLatency values of the air-conducted mVEMP were 15.90 +/- 1.68 ms for P1 and 25.86 +/- 1.48 ms for N1 and 9.96 +/- 1.50 ms for interpeak latencies. P1N1 amplitude value was 97.89 +/- 37.34 mu V and asymmetry ratio (AR) was 0.13 +/- 0.07. The normative data for the mVEMP threshold was found 84 dB nHL. According to the gender difference in mVEMP measurement parameters, the P1 latency of women was found shorter than the P1 latency of men at all stimulus intensities except 90 dB nHL. There was no statistically significant difference between mVEMP and cVEMP test results in all other severity and all parameters except P1 latency at 100 dB and interpeak latency at 100 dB (p > 0.05).ConclusionIn conclusion, it was the study findings suggest that obtaining normative data on mVEMP could be used as an auxiliary test in the evaluation of the vestibular and trigeminal pathway and the evaluation of patients with various peripheral and central vestibular disorders.
De Novo Malignancy Development Following Kidney Transplantation: Managing Risks and Outcomes in Clinical Practice
(Galenos Publ House, 2025) Huseynov, Amil; Cicek, Sevim Nuran Kuslu
Objective: Denovo malignancy is a significant complication following kidney transplantation, attributed to prolonged immunosuppression.This study evaluates the incidence, risk factors, and clinical outcomes of denovo malignancies in kidney transplant recipients. Material and Methods: A retrospective cohort analysis was conducted on 1200 kidney transplant recipients between 2016 and 2023. Patients were categorized based on the presence or absence of de novo malignancies. Statistical analyses were performed to identify risk factors, including age, sex, comorbidities, and immunosuppressive regimens. Patient and graft survival were assessed using Kaplan-Meier analysis and the log-rank test. Results: Among the study population, 43 patients (3.6%) developed de novo malignancies. The most frequent malignancy types were non-melanoma skin cancers (27.9%) and post-transplant lymphoproliferative disorders (18.6%). Patients with malignancies exhibited a lower three-year survival rate (83.7%) compared to those without malignancies (91.4%), though the difference was not statistically significant (p=0.067). Graft survival at three years was slightly lower in the malignancy group (84.0% vs. 88.7%, p=0.146). Older recipient age was identified as a significant risk factor (hazard ratio=1.03 per year, p=0.025). Conclusion: De novo malignancy remains a concern in kidney transplant recipients, particularly among older patients. Regular screening protocols, lifestyle interventions, and individualized immunosuppressive regimens are essential to mitigate risk and improve outcomes.
Persistent Urinary Tract Infections After Kidney Transplantation: Risk Factors and Management
(Elsevier Inc., 2026) Huseynov A.; Kuşlu Çiçek S.N.
Background: Persistent urinary tract infections (UTIs) are a frequent complication among kidney transplant recipients, often leading to increased morbidity, healthcare costs, and potential compromise of graft function. Identifying risk factors and effective management strategies is crucial to improve clinical outcomes in this vulnerable patient population. Methods: In this retrospective study conducted from January 2020 to December 2024, 1130 kidney transplant recipients aged 18 to 75 years were analyzed. Clinical and laboratory data were obtained from electronic medical records, with information on demographics, immunosuppressive regimens, microbiological findings, and treatment outcomes. Persistent UTIs were defined as 2 or more microbiologically confirmed episodes within 12 months despite appropriate therapy. Statistical analyses included descriptive measures, comparative tests, and multivariate logistic regression to identify independent predictors. Results: Of the total cohort, 31.2% developed persistent UTIs, with 68.5% experiencing recurrent episodes. Diabetes mellitus (adjusted OR: 1.56), prolonged urinary catheterization (adjusted OR: 2.04), and infection with multidrug-resistant (MDR) pathogens (adjusted OR: 2.32) emerged as significant risk factors. Escherichia coli was the most frequently isolated organism (36.4%), followed by Klebsiella pneumoniae and Pseudomonas aeruginosa. Patients with persistent UTIs exhibited lower mean eGFR levels, although graft loss rates did not differ significantly from those without persistent UTIs. Conclusion: Persistent UTIs represent a major clinical challenge in kidney transplant recipients. Early identification of modifiable risk factors—particularly glycemic control and appropriate urinary catheter management—may reduce recurrence and preserve renal function. A comprehensive approach involving routine microbiological surveillance and judicious antibiotic use is essential to mitigate the impact of MDR organisms on patient outcomes. © 2026
Regenerative Therapy Approaches and Encountered Problems in Sensorineural Hearing Loss
(Bentham Science Publ Ltd, 2023) Kelleci, Kuebra; Golebetmaz, Eda
Hearing loss is one of the most important public health matters worldwide, severely affecting people's social, psychological, and cognitive development. The perception of sound, movement, and balance in vertebrates depends on a special sensory organ called the cochlea, which contains hair cells and supporting cells in the inner ear. Genetic factors, epigenetics, the use of ototoxic drugs (some antibiotics and chemotherapeutics), noise, infections, or even aging can cause loss of hair cells and their related primary neurons, leading to sensorineural hearing loss. Although a sensorineural hearing loss, also known as permanent hearing loss, is treated with hearing aids and cochlear implants, treatment methods are limited. Since even the best implant cannot exhibit the characteristics of the original ear, the permanent sensory deficit will be permanent. For this reason, it has become important to develop regenerative treatment methods to regenerate and replace lost or damaged hair cells and neurons. Developments in stem cell technology have led to promising studies in regenerating damaged/lost hair cells or neurons with endogenous or exogenous cell-based therapies. Epigenetic mechanisms can turn hearing-related genes on and off and determine which proteins to copy. In addition, due to gene silencing, gene replacement, and CRISPR/CAS9 technology, gene therapy methods have accelerated, and studies have been carried out to treat dominant and recessive mutations that cause genetic-induced hearing loss or increase hair cell regeneration. In this paper, potential gene therapy and stem cell applications in the acquisition of cochlear function, which causes sensorineural hearing loss, and the difficulties encountered in these applications are compiled from a bioengineering perspective.
Results in Kidney Transplant Recipients from Living Donors 75 Years of Age or Older
(Elsevier Science Inc, 2024) Cicek, Sevim Nuran Kuslu; Huseynov, Amil; Tuncer, Murat
The increasing age of patients receiving renal replacement therapy (RRT) in Turkey, coupled with a shortage of kidney donors, has led to longer waiting times for transplants and an escalation in mortality rates. This retrospective study aimed to assess the effect on transplant outcomes of accepting kidneys from donors >= 70 years of age, given the rising number of older patients in the population. In all, 1400 patients were transplanted with kidneys from donors >50 years, with patient and graft survival as primary endpoints. Our results demonstrated that the most significant risk factors for graft function were recipient age >65 years, male sex, and presence of type 2 diabetes. Moreover, kidneys from donors >= 75 years of age achieved a half-life of 5 years. These findings suggest that donor age does not necessarily correlate with graft failure and that transplantation from older donors could help alleviate the organ shortage. Further research is needed to substantiate these conclusions.
Solution to the Single Parametric Linear Programming Problems via Simplex-Based Algorithms: Handling the Uncertainties in Costs, Left or Right-Hand Sides
(Croatian Operational Research Society, 2026) Ergenecosar, Gizem Temelcan; Kocken, Hale Gonce; Albayrak, Inci; Sivri, Mustafa
Parametric programming is one of the notable approaches to expressing the uncertainties encountered in real life. Many studies express the parameters of the objective function and right-hand side parametrically, but only a few include the parametric coefficient matrix of the constraints. This paper examines the feasibility and optimality conditions of the simplex table and proposes a simplex-based algorithm (dual-simplex, generalized-simplex, or primal-simplex). In the solution process, each case is considered independently through the mathematical analysis of simplex multipliers. Distinct numerical examples illustrate each case to demonstrate the algorithm's implementation.
Technology, Human Capital, and Economic Growth: Evidence from High Income OECD Countries
(Inderscience Enterprises Ltd, 2022) Erkisi, Kemal; Saglam, Guler
In this study, technology in the form of domestic and foreign technology and human capital in the form of education and health are included in the model, and their effects on growth are examined. The education variable is further broken down into elementary, secondary, and tertiary levels. The research covers high-income OECD countries over the period 1990-2020. In the analysis, the FGLS estimator, which resists to heteroscedasticity, cross-section dependence and panel-specific autocorrelation, is employed. Results indicate that a unit increase in foreign technology increases national income by 0.037%, and a domestic technology by 0.023%. Foreign technology has a greater impact on economic growth than domestic technology. Although primary education did not have a significant effect on growth, secondary education increased growth by 0.069% and tertiary education by 0.30%. The effect of physical capital on economic growth (0.22%) is lower than tertiary education.
Teneke Mahallesi in the Late Ottoman Capital: A Socio-Spatial Ground for the Co-Inhabitation of Roma Immigrants and the Local Poor
(Liverpool Univ Press, 2018) Yilgur, Egemen
The term teneke mahalle, literally "tin can neighbourhood," has been widely used since the Russo-Turkish War of 1877-1878 to describe a specific kind of urban fabrication, possibly poor and physically dilapidated, but also the sole, cheapest, and undoubtedly creative solution for the urgent housing needs of the poorest segments of the urban population. Even though these neighbourhoods were initially built at least partly by Muslim refugees, the Roma Mohadjirs,(1) teneke mahalles also welcomed other poor members of society seeking informal, easily accessible, and safe housing in late Ottoman Istanbul. This study discusses the role of the Roma in the formation of teneke mahalles, and the socio-historical dynamics that directed the non-Roma poor to co-inhabitation with Roma in these teneke mahalles, and outlines their socio-economic and cultural profile from various respects on the basis of the two oldest examples of this socio-spatial and perceptual phenomenon in Istanbul.
Wear Performance of Ductile Iron After Electrolytic Plasma Hardening
(Redakcia Kovove Materialy, 2019) Ayday, A.; Durman, M.
This study aimed to improve the tribological behavior of electrolytic plasma treated (EPT) ductile iron (DI). For this purpose, ductile iron was electrolytic plasma hardened under different processing parameters (treatment time and thermal cycle). Three different types of specimens were tested: untreated DI, electrolytic plasma hardened DI and remelted DI by two type wear test. It was found that remelted DI performed much better concerning wear resistance than the other samples. The microstructure of the hardened specimens was investigated using optical microscopy. Microhardness profiles and surface hardness were investigated via the Rockwell test. The microstructure and hardness of the EPT hardened layer were dependent on the processing parameters, with the hardness values reaching the range 880-1080 +/- 10 HV0.2.

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