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Now showing 1 - 10 of 19403
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    “And in the soup kitchen food shall be cooked twice every day”: gustatory aspects of Ottoman mosque complexes
    (Taylor and Francis, 2016) Department of Archeology and History of Art; Ergin, Nina Macaraig; Faculty Member; Department of Archeology and History of Art; College of Social Sciences and Humanities
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    “Beware the young doctor and the old barber”: development and validation of a job age-type spectrum
    (Elsevier, 2021) Reeves, Michael Dennis; Fritzsche, Barbara Ann; Smith, Nicholas Anthony; Ng, Yin Lu; Department of Business Administration; Marcus, Justin; Faculty Member; Department of Business Administration; College of Administrative Sciences and Economics; 124653
    Taking a worker-centric approach, with evidence based on the experiences of working individuals, the current study examines the age-related stereotypes of jobs, the characteristics of age-stereotyped jobs, and the consequences of occupying them. In Study 1, we utilize samples of working adults from the US, Turkey, and Malaysia to establish validation evidence for a spectrum of 160 jobs (n = 123 raters per job). Study 1 findings indicate that entry-level jobs and jobs requiring manual labor or the use of technology are younger-typed, whereas senior level jobs and jobs requiring large investments in training or education are older-typed. The age-typing of jobs was found to be similar across countries for the vast majority of jobs. We then provide criterion validity evidence in Study 2, by testing the interactive effects of chronological age, job age-type, and sex on psychological age and perceived age and sex discrimination across samples of workers from these same three countries (n = 1469). Results upheld theoretical predictions based upon career timetables theory, prototype matching theory, and intersectional salience of ageism theory. The interactive effects of chronological age and job age-type were stronger for women than for men; the hypothesized patterns of effects were overall consistent for women but not for men.
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    “Das recht auf vergessen" im rahmen des schutzes personenbezogener daten und die beurteilung in bezug auf die Türkei
    (İstanbul Kültür Üniversitesi, 2017) N/A; N/A; Önok, Rıfat Murat; Faculty Member; Law School; 178418
    Das “Recht auf Vergessen” hat in den letzten Jahren in der internationalen Literatur an Popularität gewonnen. Die Zahl der wissenschaftlichen Studien zu diesem Thema nimmt rasch zu. Wir sind jedoch weit entfernt davon, einen Konsens in der Lehre über die Grundlage dieses Rechts, sein Zweck und noch wichtiger über sein Inhalt und Umfang zu erzielen. Nach der Google-Entscheidung des EuGH, das hinsichtlich der Existenz (oder Nichtexistenz) eines solchen Rechts eine neue Dimension aufwirft und in Bezug auf Individuen an Bedeutung gewinnt, ist es nunmehr notwendig, das Recht auf Vergessen unter die Lupe zu nehmen. Es fällt auf, dass auch der “Yargıtay” damit begonnen hat, dieses Recht in seinen Entscheidungen zu nennen. In diesem Zusammenhang werden in diesem Aufsatz die Begriffsbestimmung, streitige Fragen in Bezug auf den Inhalt dieses Rechts, die Verbindung und Folgen der Google-Entscheidung mit diesem Recht, sowohl theoretische als auch praktische Fragen, die sich aus dem EUGH-Urteil und der Umsetzung eines solchen Rechts ergeben können, sowie eine Reihe von Fragen, die sich im Zusammenhang mit diesem Recht für die Türkei ergeben können untersucht. / Son yıllarda uluslararası literatürde popülarite kazanan kavramlardan biri“unutulma hakkı”dır. Konuya dair akademik çalışmaların sayısı hızla artmakla birlikte;hakkın dayanağı, hizmet ettiği amacı ve daha da önemlisi, tam içeriği ve kapsamı hakkın-da doktrinde görüş birliği sağlanmasına henüz uzağız. Buna rağmen, böyle bir hakkınvarlığının (veya yokluğunun) bireyler açısından önemi ve konuya yeni bir boyut kazandı-ran, Avrupa Birliği Adalet Divanı’nın Google kararı sonrasında, unutulma hakkının irde-lenmesi zorunluluk arz etmektedir. Yargıtay’ımızın da kararlarında kavrama yer vermeyebaşladığı dikkati çekmektedir. Bu bağlamda, çalışmada; kavramın tanımı, içeriğine dairtartışmalı hususlar, Google kararının bu hakla bağlantısı ve sonuçları, gerek ABAD kara-rından gerekse böyle bir hakkın uygulanmasından kaynaklanabilecek teorik ve pratiksorunlar, Türkiye açısından bu hakla bağlantılı birtakım meseleler incelenmiştir.
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    “Do you feel like becoming a leader?” Emotions and the likelihood of self-nomination for leadership
    (Elsevier Inc., 2022) Department of Psychology; N/A; Aycan, Zeynep; Shelia, Salome; Faculty Member; PhD Student; Department of Psychology; College of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; 5798; N/A
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    “Doing What Matters in Times of Stress” to decrease psychological distress during Covid-19: a rammed controlled pilot trial
    (Wolters Kluwer Medknow Publications, 2022) Uygun, Ersin; Karaoğlan Kahiloğulları, Akfer; Department of Psychology; Department of Psychology; N/A; Acartürk, Ceren; Kurt, Gülşah; İlkkurşun, Zeynep; Faculty Member; Teaching Faculty; Master Student; Department of Psychology; College of Social Sciences and Humanities; College of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; 39271; 368619; N/A
    Despite the increasing psychological distress during Covid-19, utilisation of face-to-face psychological interventions decreased profoundly. The aim of this study involving two parallel, two-armed pilot randomised controlled trials was to examine the effectiveness of a guided self-help intervention "Doing What Matters in Times of Stress" (DWM) in decreasing psychological distress in Turkish and Syrian participants. Seventy-four Turkish nationals and 50 Syrian refugee adults with psychological distress were randomly allocated to a DWM group or wait-list control group. The primary outcome measure was the Patient Health Questionnaire 9 postintervention. Secondary outcome measures were the Generalised Anxiety Disorder Scale, posttraumatic stress disorder (PTSD) Checklist for DSM-5, Generalized Self-Efficacy Scale and Acceptance and Action Questionnaire-II postintervention. Although this study was not powered to detect a significant effect for DWM postassessment between DWM and the control group, results showed a significant improvement in depression symptoms among Turkish participants in the DWM group (d = 0.46) and in PTSD symptoms among Syrian participants in the DWM group (d = 0.67) from pre- to postintervention assessment. These results indicate the potential of DWM to decrease mental health problems during the pandemic and importance of a fully powered, definitive controlled trial to examine its effectiveness both for the host community and refugees to reduce psychological distress during Covid-19.
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    “No worries, there is no error-free leadership!”: error strain, worries about leadership, and leadership career intentions among non-leaders
    (Stockholm University Press, 2022) Auvinen, E.; Tsupari, H.; Herttalampi, M.; Feldt, T.; Department of Psychology; Aycan, Zeynep; Faculty Member; Department of Psychology; College of Social Sciences and Humanities; 5798
    The growing body of research suggests that leadership is not among the most attractive career goals, especially for the younger work force. However, the need for leadership has not diminished. To shed light on the “problem of supply”, this study addresses the question of why high-potential individuals (i.e., non-leaders) do not pursue leadership positions by focusing on worries about leadership (WAL) and error-related strain. We had two aims: (1) to identify different profiles of WAL among highly educated professionals, and (2) to explore whether their error strain and leadership career intentions differ among the identified WAL profiles. Data were gathered from 955 highly educated Finnish employees representing different sectors. WAL was measured by a three-dimensional scale consisting of worries about failure, work-life imbalance, and harming others. Based on the Latent Profile Analysis, six WAL profiles emerged: (1) Average-WAL (37% of respondents), (2) Low-WAL (34%), (3) High-WAL (6%), (4) Failure-sensitive (9%), (5) Imbalance-sensitive (4%) and (6) Harm-sensitive (11%). Professionals in the Low-WAL profile reported the lowest error strain, whereas employees in the profiles of High-WAL and Failure-sensitive reported the highest error strain. Employees in the Low-WALprofile were more willing to pursue a leadership career in an unfamiliar organization compared to employees in other profiles. In addition, employees within the Low-WAL profile were more willing to pursue a leadership career in an unfamiliar organization compared to their home organization. Implications of our findings and future directions are discussed.
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    PublicationOpen Access
    “Noise Factory”: a qualitative study exploring healthcare providers’ perceptions of noise in the intensive care unit
    (Elsevier, 2020) Güner, Perihan; Kebapçı, Ayda; Faculty Member; School of Nursing; 203808
    Objectives: this study aimed to explore healthcare providers’ perceptions of noise in the intensive care unit. Design: a qualitative exploratory study was conducted using group interviews. Setting: the setting comprised a total of 15 participants (five physicians and ten registered nurses) working in an 18-bed medical surgical intensive care unit at a teaching hospital in Istanbul, Turkey. Semi-structured questions were formulated and used in focus group interviews, after which the recorded interviews were transcribed by the researchers. Thematic analysis was used to identify significant statements and initial codes. Findings: four themes were identified: the meaning of noise, sources of noise, effects of noise and prevention and management of noise. It was found that noise was an inevitable feature of the intensive care unit. The most common sources of noise were human-induced. It was also determined that device-induced noise, such as alarms, did not produce a lot of noise; however, when staff were late in responding, the sound transformed into noise. Furthermore, it was observed that efforts to decrease noise levels taken by staff had only a momentary effect, changing nothing in the long term because the entire team failed to implement any initiatives consistently. The majority of nurses stated that they were now becoming insensitive to the noise due to the constant exposure to device-induced noise. Conclusion: the data obtained from this study showed that especially human-induced noise threatened healthcare providers’ cognitive task functions, concentration and job performance, impaired communication and negatively affected patient safety. In addition, it was determined that any precautions taken to reduce noise were not fully effective. A team approach should be used in managing noise in intensive care units with better awareness.
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    “O/F shift” in hybrid rockets
    (American Institute of Aeronautics and Astronautics, 2014) Toson, Elena; Evans, Brian; Department of Mechanical Engineering; Karabeyoğlu, Mustafa Arif; Faculty Member; Department of Mechanical Engineering; College of Engineering; 114595
    For most hybrid rocket systems, oxidizer to fuel ratio (O/F) changes over time due to 1) natural growth of the fuel port diameter and 2) oxidizer flow rate variations, if throttling is employed. This phenomenon, which is referred to as “O/F shift”, leads to a reduction in motor performance. Note that liquid or solid rocket motors are not subject to temporal O/F variations, which is wrongfully considered as one of the most critical disadvantages of hybrid rockets. In this paper, the effect of “O/F shift” is quantified for hybrid rocket motors. Analytical formulas for the temporal O/F variation and the overall c* efficiency drop associated with the variation has been derived for single circular port motors. It has been shown that for a typical motor, c* efficiency drop due to O/F variation is well below 0.2%, a value which is too small to be measured in an actual motor test. It is also shown that for a wagon wheel type multiport configuration (with triangular ports), efficiency drop is significantly worse than the single circular port case. Even for the multiport systems, the shift does not have a controlling effect on the overall efficiency of the motor. A number of strategies have been outlined to control the adverse effects of O/F variation in a hybrid rocket. For a single circular port design with limited throttling, no mitigation is required. For systems with deep throttling requirements, aft oxidizer injection seems like a viable strategy to retain a high level of overall efficiency.
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    “Poor but achiever”: social capital, ethnicity, school achievement
    (Eğitim Araştırmaları Birliği, 2018) Department of Sociology; Çelik, Çetin; Faculty Member; Department of Sociology; College of Social Sciences and Humanities; 105104
    This study uses Bourdieu's social capital concept to analyze the impacts of the parental networks on the educational success of their children by comparing student-mother and dropout-mother interviewee pairs living in disadvantaged areas of Istanbul. The findings obtained from the research reveal that; (1) although they live in the same disadvantaged neighbourhoods, students continuing to attend school differ from school dropouts in terms of socioeconomic and ethnic terms; (2) school dropouts are predominantly from Kurdish and Roma families living in marginal poverty; (3) the network structures of the parents of school drop-outs and nondropouts significantly differ in the nexus of socioeconomic resources and ethnicity; and (4) differences in network structures favouring parents of those continuing to attend school are mobilized to improve the school success. This research argues that this differentiation between the two groups regarding opportunities and constraints may be the result of the historical memory of the ethnic groups who occupy differing positioning the ethnoreligious hierarchy of Turkish society. / Bu çalışma Bourdieu’nün sosyal sermaye kavramını kullanarak İstanbul’un dezavantajlı bölgelerinde yaşayan, halihazırda okula devam eden ve kısa bir süre önce okulu terk etmiş öğrenci ebeveynlerinin ağ yapılarını çocuklarının eğitim başarısına etkileri bakımından ayrıntılı olarak analiz etmektedir. Araştırmadan elde edilen bulgular şunlardır: (1) Her ne kadar aynı dezavantajlı mahallelerde yaşıyor olsalar da okula devam eden öğrenciler sosyoekonomik ve etnik açıdan okul terklerden ayrışmaktadır; (2) okul terkler ağırlıklı olarak marjinal yoksulluk koşullarında yaşayan Kürt ve Roman ailelerden gelmektedir; (3) okula devam edenlerin ve okulu terklerin ebeveynlerinin ağ yapıları sosyoekonomik ve etnisite olarak önemli derecede farklılaşmaktadır; ve (4) okula devam edenlerin ebeveynleri lehine olan ağ yapılarındaki farklılıklar, çocukların okul başarısını artırmak için mobilize edilmektedir. Araştırma, fırsat ve kısıtlara ilişkin bu grupsal farklılaşmaların onların Türkiye toplumda uzun süredir işgal ettikleri etnik konumlarının yarattığı bir toplumsal hafızadan kaynaklanabileceğini ileri sürmektedir.
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    “Smart poisoning” of Co/SiO2 catalysts by sulfidation for chirality-selective synthesis of (9,8) single-walled carbon nanotubes
    (2016) Yuan, Yang; Karahan, H. Enis; Wei, Li; Zhai, Shengli; Lau, Raymond; Chen, Yuan; N/A; Yıldırım, Cansu; Birer, Özgür; Master Student; Researcher; Koç University Surface Science and Technology Center (KUYTAM) / Koç Üniversitesi Yüzey Teknolojileri Araştırmaları Merkezi (KUYTAM); N/A; N/A; N/A
    The chirality-selective synthesis of relatively large (diameter > 1 nm) single-walled carbon nanotubes (SWCNTs) is of great interest for a variety of practical applications, but only a few catalysts are available so far. Previous studies suggested that S (compounds) can enhance the chirality-selectivity of Co catalysts in SWCNT synthesis, however, the mechanism behind is not fully understood, and no tailorable methodology has yet been developed. Here, we demonstrate a facile approach to achieve the chirality-selective synthesis of SWCNTs by the sulfidation-based poisoning of silica-supported Co catalysts using a mixture of H2S and H2. The UV-vis-NIR, photoluminescence, and Raman spectroscopy results together show that the resulting SWCNTs have a narrow diameter distribution of around 1.2 nm, and (9,8) nanotubes have an abundance of ∼38% among the semiconducting species. More importantly, the carbon yield achieved by the sulfided catalyst (2.5 wt%) is similar to that of the nonsulfided one (2.7 wt%). The characterization of the catalysts by X-ray diffraction, X-ray photoelectron spectroscopy, X-ray fluorescence, and H2 temperature-programmed reduction shows that the sulfidation leads to the formation of Co9S8 nanoparticles. However, Co9S8 nanoparticles are reduced back to regenerate metallic Co nanoparticles during the synthesis of SWCNTs, which maintain a high carbon yield. In this process, Co9S8 nanoparticles seemingly intermediate the production of Co nanoparticles with narrow size distribution. Due to the fact that the poisoning step improves the quality of the end-product rather than hampering the growth process, we have coined the process developed as “smart poisoning”. This study not only reveals the mechanism behind the beneficial role of S in the selective synthesis of relatively large SWCNTs but also presents a promising method to create chirality-selective catalysts with high activity for scalable synthesis.