PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
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Article Citation - WoS: 7Citation - Scopus: 7But the Poor Needed It More: Children's Judgments on Procedural Justice To Allocate Resources Between Two Candidates Equal in Merit, Different in Need(Elsevier Science Inc, 2023) Sıvış, Özce; Acar, MelikeThe current study investigated children's judgments on procedural justice and its outcomes when the candidates were equal in merit but different in need. A total of 88 children (41 girls and 47 boys) aged 7 to 11 years were individually interviewed (Mage = 8 years 9 months, SD = 14.065 months). Results showed that, regardless of age, children tended to give educational resources to the resource-poor candidates. However, children's welfare considera-tion of the resource-poor candidates increased with age. Children also made differentiated judgments based on the resource type and treated educational materials as more necessary than educa-tional experiences. Children's age and socioeconomic status (SES) were associated with this differentiation. Younger and high-SES children were more likely to view the outcome of procedural jus-tice (i.e., drawing a stick) for allocating an educational experience (i.e., summer camp) as fair when the result favored the resource -rich candidate. Overall, findings revealed that children do not use a unitary form of fairness in the procedural justice context. The shift from strict equality to welfare concerns continues to develop over middle childhood. (c) 2023 Elsevier Inc. All rights reserved.Article Citation - WoS: 2Citation - Scopus: 1Examining Factors Influencing Turkish Jewish Attitudes Towards the Armenian Genocide(Wiley, 2024) Kaymak, Özgür; Nefes, Türkay Salim; Gürpınar, DoğanThe most prominent issue influencing Turkish-Armenian relations is the international recognition of the Armenian genocide. However, there is a notable absence of empirical analyses regarding the perceptions of the genocide among the Turkish population. This study aims to fill this scholarly gap by exploring, for the first time, the perspectives of Turkish Jews. It analyses evidence collected from interviews conducted with 14 Turkish Jews, utilising Stanley Cohen's (2001) theoretical framework, which aids in delineating significant factors by a categorisation of types of acceptance and denial. The findings highlight a diversity of responses linked to political attitudes, which can be broadly categorised into Kayades and Avlaremoz mindsets. They also show that Turkish Jews' views on the Holocaust influence how they perceive the Armenian genocide. Additionally, the results indicate that Cohen's approach is useful in explaining non-denying responses. In conclusion, the study argues that Turkish Jews' perspectives appear to be strongly related to their stance towards the Turkish state and the Holocaust.Article Citation - WoS: 7Citation - Scopus: 8Hematocrit Levels and Thrombotic Events in Patients With Polycythemia Vera: an Analysis of Veterans Health Administration Data(Springer, 2019) Parasuraman, Shreekant; Robyn Scherber; Jingbo Yu; Li Wang; Dilan Paranagama; Sulena Shrestha; Başer, OnurPatients with polycythemia vera (PV) have a high incidence of thrombotic events (TEs), contributing to a greater mortality risk than the general population. The relationship between hematocrit (HCT) levels and TE occurrence among patients with PV from the Veterans Health Administration (VHA) was evaluated to replicate findings of the CYTO-PV trial with a real-world patient population. This retrospective study used VHA medical record and claims data from the first claim with a PV diagnosis (index) until death, disenrollment, or end of study, collected between October 1, 2005, and September 30, 2012. Patients were aged ? 18 years at index, had ? 2 claims for PV (ICD-9-CM code, 238.4) ? 30 days apart during the identification period, continuous health plan enrollment from 12 months pre-index until end of study, and ? 3 HCT measurements per year during follow-up. This analysis focused on patients with no pre-index TE, and with all HCT values either < 45% or ? 45% during the follow-up period. The difference in TE risk between HCT groups was assessed using unadjusted Cox regression models based on time to first TE. Patients (N = 213) were mean (SD) age 68.9 (11.5) years, 98.6% male, and 61.5% white. TE rates for patients with HCT values < 45% versus ? 45% were 40.3% and 54.2%, respectively. Among patients with ? 1 HCT before TE, TE risk hazard ratio was 1.61 (95% CI, 1.03–2.51; P = 0.036). This analysis of the VHA population further supports effective monitoring and control of HCT levels < 45% to reduce TE risk in patients with PV.Article Citation - WoS: 13Citation - Scopus: 17Crossing Boundaries: a Pilot Study of Maternal Attitudes About Child Maltreatment in Nine Countries(Elsevier, 2020) Emmen, R; Soares, I; Wang, L; Alink, L; Mesman, J; Mels, C; Asanjarani, F.; Carcamo, R; Hsiao, C; Selcuk, B; Branger, M.a, Woudstra, M.-L; Yavuz, Melis; Van Ginkel, JBackground: Definitions of child maltreatment vary widely between studies, and even more so between different cultural contexts. Objective: In this pilot study, we examine between-country variations in maternal notions about what constitutes child maltreatment. Participants and setting: The sample consisted of 466 mothers recruited in Chile, China, Greece, Iran, the Netherlands, Portugal, South Africa, Turkey, and Uruguay. Methods: All mothers completed a new Q-sort measure, ranking 90 parenting behaviors linked to subtypes of maltreatment (emotional neglect, emotional abuse, physical neglect, and physical abuse) from least to most detrimental to child development. Results: Between-country agreement regarding the harmfulness of the parenting behaviors was high (r =.45), but there were different patterns of reported harmfulness of subtypes of maltreatment (although driven mostly by deviating patterns in the South African sample). Further, there were significant country effects on the number and type of behaviors labeled as maltreatment (p?2 =.15), and the number of items labeled as requiring intervention (p?2 =.19). Conclusions: Variations in conceptions of maltreatment need to be studied in larger more representative samples and taken into account in the assessment and treatment of child maltreatment across cultures.Article Citation - WoS: 3Citation - Scopus: 3Mice Make Temporal Inferences About Novel Locations Based on Previously Learned Spatiotemporal Contingencies(Springer, 2022) Balci, Fuat; Gür, Ezgi; Duyan, Yalçin A.Animals learn multiple spatiotemporal contingencies and organize their anticipatory responses accordingly. The representational/computational capacity that underlies such spatiotemporally guided behaviors is not fully understood. To this end, we investigated whether mice make temporal inferences of novel locations based on previously learned spatiotemporal contingencies. We trained 18 C57BL/6J mice to anticipate reward after three different intervals at three different locations and tested their temporal expectations of a reward at five locations simultaneously, including two locations that were not previously associated with reward delivery but adjacent to the previously trained locations. If mice made spatiotemporal inferences, they were expected to interpolate between duration pairs associated with previously reinforced hoppers surrounding the novel hopper. We found that the maximal response rate at the novel locations indeed fell between the two intervals reinforced at the surrounding hoppers. We argue that this pattern of responding might be underlain by spatially constrained Bayesian computations.Article Citation - Scopus: 1When Words and Pointing Compete: Young Children's Referential Comprehension Under Uncertainty(Elsevier Science Inc, 2025) Ates, A. Beyza; Kuntay, Aylin C.The present research comprised two studies examining how 2- to 4-year-old children resolve referential uncertainty. Study 1 investigated first touches-objects initially selected or touched immediately-and takeaways-objects ultimately selected or given-as two distinct object selection behaviors, along with the verbal responses accompanying them. Study 2 explored how communicative context (i.e., preactivation of familiar object labels prior to object selection) and child characteristics (i.e., age, vocabulary knowledge, and selective attention) influenced children's referential strategies. Using a modified version of Grassmann and Tomasello's (2010) paradigm, two experimental conditions were implemented: In the Familiar-Familiar condition, when presented with two familiar objects, Experimenter 1 labeled one object to be given to Experimenter 2, while pointing to the other. In the Novel-Familiar condition, when presented with one novel and one familiar object, Experimenter 1 used a novel label while pointing to the familiar object. Results demonstrated that ostensive pointing was a stronger cue than verbal labeling in guiding children's object selections. Children modified their selections between first touches and takeaways in 17-34% of trials or verbally responded to the contradiction in 13-40% of trials. Furthermore, preactivation of familiar object labels and individual characteristics-particularly age and selective attention-were linked to variations in referential strategies. These findings highlight the complexity of referential resolution, where children integrate verbal and nonverbal cues, providing nuances about communicative development and insights about how it could be supported.Article Citation - WoS: 3Citation - Scopus: 7The Coronavirus Anxiety Scale: Cross-National Measurement Invariance and Convergent Validity Evidence(Psychological assessment, 2024) Abdelrahman, Mohamed; Rudnev, Maksim; Adebayo, Damilola Fisayo; Karakulak, Arzu; Akaliyski, Plamen; Jovanovic, Veljko; Abdul Kadir, Nor Ba'yahCoronavirus Anxiety Scale (CAS) is a widely used measure that captures somatic symptoms of coronavirus-related anxiety. In a large-scale collaboration spanning 60 countries (Ntotal = 21,513), we examined the CAS's measurement invariance and assessed the convergent validity of CAS scores in relation to the fear of COVID-19 (FCV-19S) and the satisfaction with life (SWLS-3) scales. We utilized both conventional exact invariance tests and alignment procedures, with results revealing that the single-factor model fit the data well in almost all countries. Partial scalar invariance was supported in a subset of 56 countries. To ensure the robustness of results, given the unbalanced samples, we employed resampling techniques both with and without replacement and found the results were more stable in larger samples. The alignment procedure demonstrated a high degree of measurement invariance with 9% of the parameters exhibiting noninvariance. We also conducted simulations of alignment using the parameters estimated in the current model. Findings demonstrated reliability of the means but indicated challenges in estimating the latent variances. Strong positive correlations between CAS and FCV-19S estimated with all three different approaches were found in most countries. Correlations of CAS and SWLS-3 were weak and negative but significantly differed from zero in several countries. Overall, the study provided support for the measurement invariance of the CAS and offered evidence of its convergent validity while also highlighting issues with variance estimation.Article Citation - WoS: 11Citation - Scopus: 12Social Mindfulness Predicts Concern for Nature and Immigrants Across 36 Nations(Nature Portfolio, 2022) Peker, Müjde; Van Lange, Paul A. M.; Acevedo-Triana, Cesar; Van Doesum, Niels J.; Kirkland, Kelly; Ausmees, Liisi; Amiot, Catherine E.People cooperate every day in ways that range from largescale contributions that mitigate climate change to simple actions such as leaving another individual with choice - known as social mindfulness. It is not yet clear whether and how these complex and more simple forms of cooperation relate. Prior work has found that countries with individuals who made more socially mindful choices were linked to a higher country environmental performance - a proxy for complex cooperation. Here we replicated this initial finding in 41 samples around the world, demonstrating the robustness of the association between social mindfulness and environmental performance, and substantially built on it to show this relationship extended to a wide range of complex cooperative indices, tied closely to many current societal issues. We found that greater social mindfulness expressed by an individual was related to living in countries with more social capital, more community participation and reduced prejudice towards immigrants. Our findings speak to the symbiotic relationship between simple and more complex forms of cooperation in societies.Article Citation - WoS: 4Citation - Scopus: 6Exploring Individual Differences in Infants' Looking Preferences for Impossible Events: the Early Multidimensional Curiosity Scale(Frontiers Media Sa, 2023) Sen, Hilal H. H.; Lucca, Kelsey; Lazaro, Vanessa; Lee, Nayen; Wang, Jinjing JennyInfants are drawn to events that violate their expectations about the world: they look longer at physically impossible events, such as when a car passes through a wall. Here, we examined whether individual differences in infants' visual preferences for physically impossible events reflect an early form of curiosity, and asked whether caregivers' behaviors, parenting styles, and everyday routines relate to these differences. In Study 1, we presented infants (N = 47, M-age = 16.83 months, range = 10.29-24.59 months) with events that violated physical principles and closely matched possible events. We measured infants' everyday curiosity and related experiences (i.e., caregiver curiosity-promoting activities) through a newly developed curiosity scale, The Early Multidimensional Curiosity Scale (EMCS). Infants' looking preferences for physically impossible events were positively associated with their score on the EMCS, but not their temperament, vocabulary, or caregiver trait curiosity. In Study 2A, we set out to better understand the relation between the EMCS and infants' looking preferences for physically impossible events by assessing the underlying structure of the EMCS with a larger sample of children (N = 211, M-age = 47.63 months, range = 10.29-78.97 months). An exploratory factor analysis revealed that children's curiosity was comprised four factors: Social Curiosity, Broad Exploration, Persistence, and Information-Seeking. Relatedly, caregiver curiosity-promoting activities were composed of five factors: Flexible Problem-Solving, Cognitive Stimulation, Diverse Daily Activities, Child-Directed Play, and Awe-Inducing Activities. In Study 2B (N = 42 infants from Study 1), we examined which aspects of infant curiosity and caregiver behavior predicted infants' looking preferences using the factor structures of the EMCS. Findings revealed that infants' looking preferences were uniquely related to infants' Broad Exploration and caregivers' Awe-Inducing Activities (e.g., nature walks with infants, museum outings). These exploratory findings indicate that infants' visual preferences for physically impossible events may reflect an early form of curiosity, which is related to the curiosity-stimulating environments provided by caregivers. Moreover, this work offers a new comprehensive tool, the Early Multidimensional Curiosity Scale, that can be used to measure both curiosity and factors related to its development, starting in infancy and extending into childhood.Article Citation - WoS: 4Citation - Scopus: 4Effects of Vaccination and the Spatio-Temporal Diffusion of Covid-19 Incidence in Turkey(John Wiley and Sons Inc, 2022) Bilgel, Fırat; Karahasan, Burhan CanThis study assesses the spatio-temporal impact of vaccination efforts on Covid-19 incidence growth in Turkey. Incorporating geographical features of SARS-CoV-2 transmission, we adopt a spatial Susceptible–Infected–Recovered (SIR) model that serves as a guide of our empirical specification. Using provincial weekly panel data, we estimate a dynamic spatial autoregressive (SAR) model to elucidate the short- and the long-run impact of vaccination on Covid-19 incidence growth after controlling for temporal and spatio-temporal diffusion, testing capacity, social distancing behavior and unobserved space-varying confounders. Results show that vaccination growth reduces Covid-19 incidence growth rate directly and indirectly by creating a positive externality over space. The significant association between vaccination and Covid-19 incidence is robust to a host of spatial weight matrix specifications. Conspicuous spatial and temporal diffusion effects of Covid-19 incidence growth were found across all specifications: the former being a severer threat to the containment of the pandemic than the latter.Article Citation - WoS: 1Citation - Scopus: 1The Shadows of Internalized Bisexual Myths: Jealousy and Psychological Intimate Partner Violence Perpetration Among Bisexual Plus Individuals in Turkiye(2025) Zurnaci, Burcu; Demirtas, Ezgi TopluArticle Citation - WoS: 10Citation - Scopus: 12Elevated White Blood Cell Levels and Thrombotic Events in Patients With Polycythemia Vera: a Real-World Analysis of Veterans Health Administration Data(Elsevier Inc., 2019) Wang, Li; Parasuraman, Shreekant V.; Sulena Shrestha; Paranagama, Dilan C.; Yu, Jingbo; Scherber, Robyn Marie; Başer, OnurBackground: Patients with polycythemia vera (PV) have a substantial risk of thrombotic events (TEs). The objective of the present analysis was to describe the association between white blood cell (WBC) levels and occurrence of TEs among patients with PV from a large real-world population. Patients and Methods: The present retrospective analysis using Veterans Health Administration claims data (October 1, 2005, to September 30, 2012) evaluated adult patients assigned to 4 WBC count categories (WBC count < 7.0, 7.0-8.4, 8.5 to < 11.0, and ≥ 11.0 × 109/L) to compare the risk of TEs (reference, WBC count, < 7.0 × 109/L group). Analysis was performed using a Cox proportional hazards model, considering WBC status as a time-dependent covariate. Results: Of the 1565 patients with PV included in the present analysis, the WBC count was < 7.0 × 109/L for 428 (27.3%), 7.0 to 8.4 × 109/L for 375 (24.0%), 8.5 to < 11.0 × 109/L for 284 (18.1%), and ≥ 11.0 × 109/L for 478 (30.5%). Of the 1565 patients, 390 (24.9%) had experienced a TE during the study period. The mean follow-up ranged from 3.6 to 4.5 years. Compared with the reference group (WBC count < 7.0 ×109/L), the hazard ratio for TEs was 1.10 (95% confidence interval [CI], 0.82-1.48; P = .5395), 1.47 (95% CI, 1.10-1.96; P = .0097), and 1.87 (95% CI, 1.44-2.43; P < .0001) for patients with a WBC count of 7.0 to 8.4, 8.5 to < 11.0, and ≥ 11.0 ×109/L, respectively. Conclusion: A positive, significant association between an increased WBC count of ≥ 8.5 ×109/L and the occurrence of TEs was observed in patients with PV. The potential thrombogenic role of WBCs in patients with PV supports the continued inclusion of WBC count control in disease management and evaluation of the response to therapy. © 2019 The AuthorsPatients with polycythemia vera (PV) have a substantial risk of thrombotic events (TEs). In the present retrospective analysis using Veterans Health Administration claims data, 25% of 1565 patients experienced a TE during follow-up. We observed a positive, significant association between white blood cell (WBC) counts ≥ 8.5 × 109/L and TE occurrence (reference, WBC count < 7.0 × 109/L), supporting continued inclusion of WBC count control in disease management. © 2019 The AuthorsArticle Citation - WoS: 13Citation - Scopus: 17Consistency of Adults’ Earliest Memories Across Two Years(Taylor & Francis, 2019) Gülgöz, Sami; Demiray, Burcu; Ece, BerivanThe consistency of earliest memories in content, dating, and memory qualities was investigated. A total of 84 (27 males; Mage = 24.93, SD = 1.36) adults reported earliest memories, estimated ages, and rated their recollections on memory qualities with a two-year time lag. At Time 2, their original reports at Time 1 were presented and they were asked to report whether the earliest memories they recalled at Time 2 were the same. Fifty-six per cent of the participants reported the same earliest memories and those remembering the same events had earlier memories than those remembering different ones. Although no significant differences were observed in estimated ages on the basis of mean ages, a predating bias of later memories and a tendency to postdate earlier memories were observed on the basis of a 48-month cut-off point. Thus, how the data is analysed is critical in detecting dating biases or errors affecting conclusions and interpretations about the dating consistency of earliest memories. Finally, memory qualities of earliest memories displayed a high level of consistency with a two-year time lag regardless of remembering the same versus different event.Article Emotionally Tough, Sexting Rough: Relationship Between Callous Unemotional Traits and Aggravated Sexting in 11 Countries(Colegio Oficial de Psicologos de Asturias, 2025) Morelli, Mara; Rosati, Fau; Cattelino, Elena; Urbini, Flavio; Baiocco, Roberto; Bianchi, Dora; Chirumbolo, Antonio; Toplu-Demirtaş, EzgiBackground: Sexting is now widely acknowledged as a common sexual behavior among adolescents and young adults. However, the occurrence of abusive interactions, such as non-consensual sexting, warrants attention. Prevalence rates of non-consensual sexting vary between countries, influenced by gender and age. The present study examined the relationship between three facets of callous-unemotional (CU) traits (i.e., callousness, uncaring, and unemotional) and the sharing of non-consensual sexts across different relationship contexts (i.e., acquaintances, strangers, or partners). Method: Data were drawn from a cross-countries project encompassing 11 countries: Belgium, China, Czech Republic, Ireland, Italy, Malaysia, Poland, Russia, Turkey, Uganda, and the USA. The sample comprised 6093 young adults (3682 girls; 2401 boys), aged 13 to 30 (M = 20.35; SD = 3.63). Results: Results from a logistic mixed-model indicate that CU traits predict non-consensual sexting, with high callousness and uncaring, and low unemotional traits associated with non-consensual sexting involving partners and strangers. Younger individuals and women were more likely to engage in all forms of non-consensual sexting compared to older individuals and men. Conclusions: It is important to promote sexual education programs to increase emotional self-awareness and challenge gender stereotypes in order to reduce adverse outcomes associated with sexting.Article Citation - WoS: 3Citation - Scopus: 3Warfarin Discontinuation in Patientswith Unprovoked Venous Thromboembolism: a Large Us Insurance Database Analysis(2016) Mardekian, Jack; Liu, Xianchen; Phatak, Hemant; Xie, Lin; Tan, Wilson; Başer, Onur; Ramacciotti, EduardoThis study examined warfarin therapy discontinuation and its risk factors among patients with unprovoked venous thromboembolism (VTE) in the US clinical practice setting. Adult patients with unprovoked VTE were identified from the MarketScan claims database from January 1, 2006 to December 31, 2012. The index date was defined as the date of first VTE diagnosis. Patients were required to have no VTE diagnosis in the 6 months before index date and continuous health plan enrollment for 6 months before and 12 months after the index date. Warfarin discontinuation rates and adjusted hazard ratios (HRs) were reported. Of 21,163 eligible patients, 15,463 were diagnosed with deep vein thrombosis (DVT) only (73.1%), 5027 with pulmonary embolism (PE) only (23.7%), and 673 with DVT and PE (3.2%). The average duration of warfarin therapy was 5.2 months (SD = 3.0). During 1-year follow-up, 21.4% patients discontinued therapy within 3 months, 42.8% within 6 months, and 70.1% within 12 months. PE versus DVT [HR = 0.77, 95% confidence interval (CI) = 0.74-0.80], comorbid atrial fibrillation (HR = 0.73, 95% CI = 0.66-0.81), thrombophilia (HR = 0.62, 95% CI = 0.54-0.71), and age >40 years (41-65 years: HR = 0.86, 95% CI = 0.81-0.91; >65 years: HR = 0.82, 95% CI = 0.77-0.87) were significantly associated with reduced risk of warfarin discontinuation. Alcohol abuse/dependence (HR = 1.36, 95% CI = 1.20-1.55), cancer history (HR = 1.13, 95% CI = 1.07-1.19), bleeding (HR = 1.07, 95% CI = 1.01-1.15), and catheter ablation (HR = 1.10, 95% CI = 1.00-1.20) in the 6 months before index date were significantly associated with increased risk for warfarin discontinuation. In conclusion, nearly 1 of 4 patients with unprovoked VTE discontinued warfarin within 3 months. Three of 4 patients discontinued therapy within 1 year. Younger age and multiple clinical factors are associated with warfarin therapy discontinuation.Article Citation - WoS: 40Citation - Scopus: 43The Age of Anxiety? It Depends Where You Look: Changes in Stai Trait Anxiety, 1970-2010(Springer, 2016) Booth, Robert William; Leader, Tirza I.; Sharma, DinkarPurpose : Population-level surveys suggest that anxiety has been increasing in several nations, including the USA and UK. We sought to verify the apparent anxiety increases by looking for systematic changes in mean anxiety questionnaire scores from research publications. Methods : We analyzed all available mean State–Trait Anxiety Inventory scores published between 1970 and 2010. We collected 1703 samples, representing more than 205,000 participants from 57 nations. Results : Results showed a significant anxiety increase worldwide, but the pattern was less clear in many individual nations. Our analyses suggest that any increase in anxiety in the USA and Canada may be limited to students, anxiety has decreased in the UK, and has remained stable in Australia. Conclusions : Although anxiety may have increased worldwide, it might not be increasing as dramatically as previously thought, except in specific populations, such as North American students. Our results seem to contradict survey results from the USA and UK in particular. We do not claim that our results are more reliable than those of large population surveys. However, we do suggest that mental health surveys and other governmental sources of disorder prevalence data may be partially biased by changing attitudes toward mental health: if respondents are more aware and less ashamed of their anxiety, they are more likely to report it to survey takers. Analyses such as ours provide a useful means of double-checking apparent trends in large population surveys.Article Citation - WoS: 50Citation - Scopus: 49Subjective Status and Perceived Legitimacy Across Countries(John Wiley and Sons, 2020) Andrighetto, Luca; Croizet, Jean‐claude; Bocian, Konrad; Essien, Iniobong; Batruch, Anatolia; Autin, Frederique; Durante, Federica; Bukowski, Marcin; De Lemus, Soledad; Babincak, Peter; Conway, Paul; Bae, Jaechang; Easterbrook, Matthew J.; Brandt, Mark J.; Dragon, Piotr; Crawford, Jarret T.; Bourguignon, David; Butler, Sarah E.; Butera, Fabrizio; Chryssochoou, Xenia; Becker, Julia C.; Spears, Russell; Bodroža, Bojana; Forgas, Joseph P.; Badea, Constantina; Peker, Müjde; Degner, Juliane; Kuppens, ToonThe relationships between subjective status and perceived legitimacy are important for understanding the extent to which people with low status are complicit in their oppression. We use novel data from 66 samples and 30 countries (N = 12,788) and find that people with higher status see the social system as more legitimate than those with lower status, but there is variation across people and countries. The association between subjective status and perceived legitimacy was never negative at any levels of eight moderator variables, although the positive association was sometimes reduced. Although not always consistent with hypotheses, group identification, self-esteem, and beliefs in social mobility were all associated with perceived legitimacy among people who have low subjective status. These findings enrich our understanding of the relationship between social status and legitimacy.Article Citation - WoS: 7Citation - Scopus: 9Displacement of a Bubble Located at a Fluid-Viscoelastic Medium Interface(Acoustical Society of America, 2019) Körük, Hasan; Choi, James J.A model for estimating the displacement of a bubble located at a fluid-viscoelastic medium interface in response to acoustic radiation force is presented by extending the model for a spherical object embed- ded in a bulk material. The effects of the stiffness and viscosity of the viscoelastic medium and the amplitude and duration of the excitation force on bubble displacement were investigated using the proposed model. The results show that bubble displacement has a nonlinear rela- tionship with excitation duration and viscosity. The time at which the steady state is reached increases with increasing medium viscosity and decreasing medium stiffness.Article Citation - WoS: 10Citation - Scopus: 9When the Personal and the Collective Intersects: Memory, Future Thinking, and Perceived Agency During the Covid-19 Pandemic(American Psychological Association, 2024) Topcu, Meymune Nur; Hirst, WilliamDo collective crises have an impact on the characteristics of mental time travel for individuals and collectives? The COVID-19 pandemic provides a unique context to address this question due to the intersection it created between the personal and the collective domains. In two studies (N = 273), we examined the valence and perceived agency involved in memory and future thinking for personal and collective domains. The second study also included a longitudinal component with 43 participants completing both studies. In research done prior to the pandemic, a valence-based dissociation between personal and collective events was consistently observed in Western samples. We wanted to see if these patterns changed during different stages of the pandemic. In the first study, participants no longer exhibited the usual positivity bias for the personal future, while in the second study, they did not exhibit the usual negativity bias for the collective future. The second aim of the current article was to assess the agency people attribute to themselves and their nation over events and how that relates to valence. People always attributed more agency to themselves over positive events than negative events in both personal and collective domains. Perceived nation agency, however, was associated with positivity in the collective domain but with negativity in the personal domain. Longitudinal analyses confirmed these patterns. Taken together, these results indicate that a collective crisis that has immediate and profound effects on personal lives can alter the patterns observed for mental time travel, especially for the future.Article Citation - WoS: 3Citation - Scopus: 5Single-Slice Microwave Imaging of Breast Cancer by Reverse Time Migration(Wiley, 2022) Bilgin, Egemen; Cansız, Gökhan; Akduman, İbrahim; Cayoren, Mehmet; Joof, Sulayman; Yılmaz, TubaPurpose Microwave imaging of breast cancer is considered and a new microwave imaging prototype including the imaging algorithm, the antenna array, and the measurement configuration is presented. The prototype aims to project the geometrical features of the anomalies inside the breast to a single-slice image at the coronal plane depending on the complex dielectric permittivity variation among the tissues to aid the diagnosis . Methods The imaging prototype uses a solid cylindrical dielectric platform, where a total of 24 optimized Vivaldi antennas are embedded inside to form a uniform circular antenna array. The center of the platform is carved to create a hollow part for placement of the breast and the multistatic, microwave scattering parameters are collected with the antenna array around the hollow center. The dielectric platform further enhances the microwave impedance matching against the breast fat tissue and preserves the vertical polarization during the measurements. In the imaging phase, a computationally efficient inverse electromagnetic scattering method-reverse time migration (RTM)-is considered and adapted in terms of scattering parameters to comply with the actual measurements. Results The prototype system is experimentally tested against tissue-mimicking breast phantoms with realistic dielectric permittivity profiles. The reconstructed single-slice images accurately determined the locations and the geometrical extents of the tumor phantoms. These experiments not only verified the microwave imaging prototype but also provided the first experimental results of the imaging algorithm. Conclusions The presented prototype system implementing the RTM method is capable of reconstructing single-slice, nonanatomical images, where the hotspots correspond to the geometrical projections of the anomalies inside the breast.
