TR-Dizin İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/8652

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Now showing 1 - 14 of 14

Citation - WoS: 1
Development and Psychometric Validation of the Turkish Gambling Disorder Screening Test: a Measure That Evaluates Gambling Disorder Regarding the American Psychiatric Association Framework
(Yerkure Tanitim & Yayincilik Hizmetleri A S, 2020) Evren, Cuneyt; Evren, Bilge; Dalbudak, Ercan; Topcu, Merve; Kutlu, Nilay; 256656
Objective: First study aims to develop the Gambling Disorder Screening Test (GDST), a standardized measure that assesses symptoms and prevalence of gambling disorder (GD) regarding the American Psychiatric Association (APA) diagnostic framework. The aim of the second study is to validate the GDST psychometrically. Methods: In the first study participants were assessed with GDST. Sample comprised of 400 Turkish university students and video game players (54.0% male, mean age 24.30 years, SD=6.83) that was enrolled online. In the second study the sample (n=326; 60.1% male, mean age 23.54 years, SD=4.44) was similar with the first study. Participants were assessed with GDST, the South Oaks Gambling Screen (SOGS) and the Gambling Motives Questionnaire (GMQ). Results: In the first study, according to the exploratory factor analysis a single component accounted for 64.02% of total variance. The scale was internally consistent with a Cronbach's alpha of 0.93, thus considered as reliable. In the second study, confirmatory factor analysis showed that GDST's factor structure (i.e., the unidimensional structure) was satisfactory. Positive correlations between GDST and the number of self-reported gambling type, SOGS and GMQ scores demonstrated adequate convergent and criterion-related validity. Also the GDST had a Cronbach's alpha of 0.92 in this sample. Conclusion: These findings from Study 1 and Study 2 suggest that the Turkish GDST is a valid and reliable measure to assess the severity of GD related issues according to APA's framework among young adults and for the purposes of early detection of GD in clinical settings and research.
Citation - WoS: 7
Citation - Scopus: 10
Extending a Sentiment Lexicon With Synonym-Antonym Datasets: Swnettr Plus
(Tubitak Scientific & Technological Research Council Turkey, 2019) Genc, Burkay; Sever, Hayri; Saglam, Fatih; 11916
In our previous studies on developing a general-purpose Turkish sentiment lexicon, we constructed SWNetTR-PLUS, a sentiment lexicon of 37K words. In this paper, we show how to use Turkish synonym and antonym word pairs to extend SWNetTR-PLUS by almost 33% to obtain SWNetTR++, a Turkish sentiment lexicon of 49K words. The extension was done by transferring the problem into the graph domain, where nodes are words, and edges are synonym- antonym relations between words, and propagating the existing tone and polarity scores to the newly added words using an algorithm we have developed. We tested the existing and new lexicons using a manually labeled Turkish news media corpus of 500 news texts. The results show that our method yielded a significantly more accurate lexicon than SWNetTR-PLUS, resulting in an accuracy increase from 72.2% to 80.4%. At this level, we have now maximized the accuracy rates of translation-based sentiment analysis approaches, which first translate a Turkish text to English and then do the analysis using English sentiment lexicons.
Citation - WoS: 7
Citation - Scopus: 7
Fourth Order Differential Operators With Distributional Potentials
(Tubitak Scientific & Technological Research Council Turkey, 2020) Bairamov, Elgiz; Ugurlu, Ekin; 238990
In this paper, regular and singular fourth order differential operators with distributional potentials are investigated. In particular, existence and uniqueness of solutions of the fourth order differential equations are proved, deficiency indices theory of the corresponding minimal symmetric operators are studied. These symmetric operators are considered as acting on the single and direct sum Hilbert spaces. The latter one consists of three Hilbert spaces such that a squarely integrable space and two spaces of complex numbers. Moreover all maximal self-adjoint, maximal dissipative and maximal accumulative extensions of the minimal symmetric operators including direct sum operators are given in the single and direct sum Hilbert spaces.
Kronik Hastalıklarda Duygu Düzenleme: Kalp ve Damar Sistemi Hastalıkları, Kanser, Migren, Fibromiyalji ve Sedef Hastalığı Üzerine Bir Derleme
(Association for Clinical Psychology Research, 2023) Tuna, E.
Emotion regulation (ER) involves conscious and automatic regulation of the occurrence, type, intensity, timing, and expression of emotions. Previous studies indicate that ER not only affects individuals’ mental health outcomes, but also plays a critical role in physical health as well. Especially in chronic diseases, how emotions are regulated shapes many patient variables including self-care, treatment adherence, and stress management; affecting both physical and psychological well-being. Furthermore, there is evidence that ER plays a role in initiation and prognosis of some chronic diseases. The aim of this review article was to summarize evidence regarding the association between chronic diseases and ER, and describe limitations in the existing studies in order to guide future research. To reach this aim, after a brief discussion of the mechanisms between emotions and health, we discussed research findings on ER in cardiovascular disease (CVD), cancer, migraine, fibromyalgia, and psoriasis, respectively. Findings indicate that emotion and ER play a role in the etiology of CVD; yet there are mixed findings regarding their role in the etiology of cancer. Research on migraine, psoriasis and fibromyalgia are rather correlational. Findings generally suggest that individuals with a chronic disease report more problems in ER as compared to healthy individuals. Frequent use of less adaptive strategies among patients have been related to less favorable outcomes such as psychopathology symptoms, bodily symptoms, and lower quality of life. Understanding ER in chronic diseases could guide the development of prevention and intervention programs aimed at increasing patients’ quality of life. The article ends with an evaluation of the literature and suggestions for clinical practice. © 2023 Klinik Psikoloji Araştırmaları Derneği. Tüm hakları saklıdır.
Citation - Scopus: 1
Linear Contrasts in One-Way Classification Ar(1) Model With Gamma Innovations
(Hacettepe Univ, Fac Sci, 2016) Senoglu, Birdal; Bayrak, Ozlem Turker; 56416
In this study, the explicit estimators of the model parameters in oneway classification AR(1) model with gamma innovations are derived by using modified maximum likelihood (MML) methodology. We also propose a new test statistic for testing linear contrasts. Monte Carlo simulation results show that the MML estimators have higher efficiencies than the traditional least squares (LS) estimators and the proposed test has much better power and robustness properties than the normal theory test.
Mediating Roles of Impulsivity and Risk-Taking in the Links of the Dark Triad With Flirting and Dating Via Social Media
(Istanbul Univ, Fac Letters, dept Psychology, 2022) Demircioglu, Zeynep Isil; Goncu-Kose, Asli; 166202
With the acceleration of communication and access to information, individuals have begun to date via social networking sites. Although online dating has spread among university students recently, studies on this topic are very limited. The present study aimed to investigate the effects of the Dark Triad personality traits (i.e., Machiavellianism, psychopathy, and narcissism) on using Social Networking Sites (SNS) to find partners and face-to-face meeting/dating after flirting via the internet (i.e., face-to-face dating with a partner met via SNS). Furthermore, it was also aimed to identify the mediating roles of risk-taking and impulsivity in the relationships mentioned above. Data were collected from 358 University students (223 females and 135 males) who volunteered to complete the survey packages. The data was analyzed using Structural Equation Modeling (SEM). The age of the participants ranged between 18 and 49 (M = 22.67, SD = 2.83). The results revealed that narcissism was linked to using SNS to find partners, and impulsivity fully mediated the relationships of Machiavellianism with using SNS to find partners. In addition, the links of psychopathy with using SNS to find partners were partially mediated by impulsivity, with risk-taking fully mediating the effects of psychopathy and narcissism on face-to-face dating with a partner met via SNS. The present research revealed that impulsivity and risk-taking were the common attitudes underlying the links of psychopathy and narcissism with dating someone met via SNS. For individuals who score high on Machiavellianism, a low level of impulsivity is a protective factor; whereas a high level of impulsivity is a triggering factor that leads those with high psychopathy scores to search for partners via SNS. Contrary to expectations, narcissism was not directly associated with face-to-face dating a partner who was met via SNS. This finding may be related to the unidimensional measurement of narcissism, since grandiose narcissism is more likely to be positively associated with this risky and confident behavior, whereas vulnerable narcissism is less likely to have such an association.
Citation - WoS: 8
Metacognitive Beliefs and Coping Strategies of Suicide Attempters
(Yerkure Tanitim & Yayincilik Hizmetleri A S, 2019) Yazihan, Naksidil Torun; Cinar, Orhan; Canbaz, Hayri; Ak, Mehmet; 276238
Objective: Metacognition is an essential process regarding decision-making and coping with stressful life events. In this present study, we aimed to examine the metacognitive beliefs and coping strategies of suicide attempters with subthreshold depressive symptoms. Methods: Thirty suicide attempters (mean age of 25.50 +/- 7.66 years) with subthreshold depressive symptoms and 30 healthy participants (mean age of 28.27 +/- 7.13 years) were compared with regard to Metacognition Questionnaire-30 (MCQ-30) and COPE Questionnaire. Results: The MANOVA results revealed significant differences between the groups for the subscales of MCQ-30 namely, "negative beliefs about thoughts", "need to control thoughts" and "lack of cognitive confidence". The results also indicated significant difference regarding "positive reinterpretation", "seeking social support for instrumental reasons", "active coping, planning, and problem-focused coping", "behavioral disengagement", "alcohol-drug disengagement" and "dysfunctional coping" subscales of COPE Questionnaire. In addition, moderate correlations were found between the MCQ-30 and the COPE subscales based on the Pearson's correlation coefficients. Conclusions: This study revealed the effect of particular metacognitive beliefs and type of coping style on suicidal behavior. This study is important for identifying risk factors and explaining how metacognitive beliefs and coping strategies are related to suicidal behavior. Maladaptive metacognitions may lead to overestimation of perceived stress and underestimation of cognitive resources and coping skills which may prevent individulas to produce adaptive coping strategies against stressful life events.
A Neo-Structuralist Perspective on Architectural Theory of Post-Truth Era: Re-Constructing the Architect-Subject
(Yildiz Technical Univ, Fac Architecture, 2022) Cavdar, Rabia Cigdem; 237969
The fundamental aim of the article is to scrutinise the transformations and yet pseudo-disappearance of architectural theory with an archi-theoretical gaze. It is an attempt to reread/ write the architectural theory of the 21st century in the shade of the claim that architectural theory was dead. It is obvious that not only in architecture but also in all social-life structures, free-floating meanings began to invade the totality; every concept that constitutes societal life was dislocated after the digital turn. Concepts began to be depicted with the prefix 'pose; such as post-historical, post-humanist, post-political, post-ideological, post-theory, and even, 'post-truth'. Under these circumstances, the main argument of the article is that architecture could be run as a 'point de capitone' -in Lacanian terminology-, between the subject -described as the sublime object of ideology by Zizek- and the ideology; the role of architecture is to work as a stabiliser on/between the liquid surfaces/grounds. In the context of the main argument, the article is structured on three conceptual domains, which are that ideology, subject and architecture. Architecture as a point de capitone has a significant role in the reconstitution of incommensurable dialectic in the 'redoubling procedure; which works for both recreating the lost otherness, and providing social antagonism.
A Novel Hypercube-Based Approach To Overlay Design Algorithms on Topic Distribution Networks
(Gazi Univ, 2022) Yumusak, Semih; Hassanpour, Reza; Layazali, Sina; Oztoprak, Kasim; Hassanpour, Reza; Yazılım Mühendisliği
Data communication in peer-to-peer (P2P) network requires a fine-grained optimization for memory and processing to lower the total energy consumption. When the concept of Publish/subscribe (Pub/Sub) systems were used as a communication tool in a P2P network, the network required additional optimization algorithms to reduce the complexity. The major difficulty for such networks was creating an overlay design algorithm (ODA) to define the communication patterns. Although some ODAs may perform worse on a high-scale, some may have better average/maximum node degrees. Based on the experimentation and previous works, this study designed an algorithm called the Hypercube-ODA, which reduces the average/maximum node degree for a topic connected Pub/Sub network. The Hypercube-ODA algorithm creates the overlay network by creating random cubes within the network and arranging the nodes with the cubes they belong to. In this paper, the details of the proposed Hypercube algorithm were presented and its performance was compared with the existing ODAs. Results from the experiments indicate that the proposed method outperforms other ODA methods in terms of lower average node degree (lowering the average node degree by up to 60%).
Citation - WoS: 5
Citation - Scopus: 5
On Some Fractional Operators Generated From Abel's Formula
(Tubitak Scientific & Technological Research Council Turkey, 2022) Ugurlu, Ekin; 238990
This work aims to share some fractional integrals and derivatives containing three real parameters. The main tool to introduce such operators is the corresponding Abel's equation. Solvability conditions for the Abel's equations are shared. Semigroup property for fractional integrals are introduced. Integration by parts rule is given. Moreover, mean value theorems and related results are shared. At the end of the paper, some directions for some fractional operators are given.
Citation - WoS: 2
Citation - Scopus: 3
On the Stability of Inverse Dynamics Control of Flexible-Joint Parallel Manipulators in the Presence of Modeling Error and Disturbances
(Tubitak Scientific & Technological Research Council Turkey, 2019) Korkmaz, Ozan; Denizli, Mustafa Semih; Ider, Sitki Kemal; 108608
Inverse dynamics control is considered for flexible-joint parallel manipulators in order to obtain a good trajectory tracking performance in the case of modeling error and disturbances. It is known that, in the absence of modeling error and disturbance, inverse dynamics control leads to linear fourth-order error dynamics, which is asymptotically stable if the feedback gains are chosen to make the real part of the eigenvalues of the system negative. However, when there are modeling errors and disturbances, a linear time-varying error dynamics is obtained whose stability is not assured only by keeping the real parts of the frozen-time eigenvalues of the system negative. In this paper, the stability of such systems is investigated and it is proved that the linear time-varying system can be rendered stable by selecting the feedback gains such that the variation of the system becomes sufficiently slow. To illustrate the performance of the control method, deployment motion of a 3-(R) under bar PR planar parallel manipulator subject to impact is simulated. For the impact model, the impulse-momentum and the coefficient of restitution equations for the system are derived.
Citation - WoS: 4
Reflections on Kahramanmaraş and Hatay Earthquakes: Evaluating Syrian Refugees' Location Choices in Terms of Earthquake Hazards and Risks
(Kare Publ, 2023) Kahraman, Zerrin Ezgi Haliloglu; 50343
Turkey is both a seismically active country due to the complex combination of important fault lines passing through it, and a country of migration hosting the largest refugee population in the world. One of the concerns raised after the earthquakes of February 2023 is the possible serious impacts of earthquakes on Syrian refugees. Within this framework, this study aimed to examine the location choice processes of Syrian refugees in reference to earthquake hazards and risks. To do this, it evaluated the location choice decisions of Syrians at the city, settle-ment area and housing scales together with their social char-acteristics. The researcher's own studies on location choice, everyday life, residential satisfaction, integration and quality of life of Syrian refugees, and related research in the literature, as well as statistical data obtained from the website of the Presidency of Migration Management, were synthesized to reach hints about earthquake hazards and risks at different scales and dimensions. The findings of the study indicated that the majority of the Syrian population is dispersed in earthquake -prone cities, which increases earthquake risks for both the Syrian population and these cities. On the other hand, the lack of housing and settlement policies for Syrian refugees scattered throughout Turkish cities has forced them to take responsibility for meeting their own housing needs. This has led Syrian refugees having limited financial resources to resettle in poor/underdeveloped and/or illegal settlement areas of cities where they live in low-quality, neglected, unhealthy, and structurally problematic houses having disaster risks. Moreover, Syrians' large family size, vulnerable groups including women, children and elders, and our inadequate knowledge on Syrian refugees due to their unauthorized movements within and between cities and their unregistered groups have increased their risk of being adversely affected by earthquakes.
Citation - WoS: 1
Citation - Scopus: 1
Scattering of Plane-Waves by an Impedance Half-Plane at the Interface Between Isorefractive Media
(Taylor and Francis Ltd., 2018) Basdemir, Husnu Deniz; 20399
The scattering of plane waves by an impedance half-plane located at the interface of two isorefractive media is investigated. The scattered field, in addition to the diffracted and geometrical optics fields, is analyzed numerically and compared to the scattered field of perfectly conducting half-plane. The effect of the isorefractive media on the scattered field is also examined. © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group.
Statistical Models for Porous Asphalt Mixtures Containing Pulverized Surface Dressed Pavement Material/Low-density Polyethylene Waste
(MIM RESEARCH GROUP, 2025) Oner, Julide; Almusawı, Alı; Abdulrahman, Hassan Shuaibu; Ahmed, Nasiru Ibrahim
Porous asphalt (PA) mixtures typically contain a high proportion of coarse aggregates with minimal fine aggregates, along with a binder that creates ample space for water drainage. Since road construction consumes large quantities of aggregates, recycling and reusing materials have become common practices. This study focuses on developing PA by partially replacing traditional aggregates with pulverized surface-dressed pavement material (PSM) and modifying bitumen with low-density polyethylene (LDPE). The mixtures were produced using 60/70 penetration grade bitumen modified with 2%, 4%, and 6% LDPE waste and 20%, 40%, 60%, and 80% PSM. Adding LDPE waste to the bitumen altered key properties, such as the softening point, penetration, flashpoint, and ductility, resulting in a stiffer binder. Replacing aggregates with PSM reduced both stability and flow, leading to a lower Marshall quotient. Flow values for all trial mixes did not meet AAPA (2004) standards, while stability values slightly decreased as LDPE content increased from 2% to 6%. Despite this, all samples met the AAPA (2004) stability standard. The sample containing 2% LDPE and no PSM exhibited the highest Marshall quotient. Linear regression models were developed from experimental data to highlight the relationships between the measured responses and the variables. These polynomial equations demonstrated a strong correlation, indicated by high coefficients of determination. The study introduces an innovative approach by incorporating PSM and LDPE, largely unexplored in PA production, especially in Nigeria. The major societal benefits include reducing environmental pollution through plastic waste reuse, conserving natural aggregates, and promoting cost-effective construction practices. By advancing the use of recycled materials, this research supports sustainable infrastructure development while maintaining compliance with industry standards. © 2025 MIM Research Group. All rights reserved.

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