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Item Metadata only “At Least, at the border, i am killing myself by my own will”: migration aspirations and risk perceptions among Syrian and Afghan communities(Routledge Journals, Taylor and Francis Ltd, 2023) 0000-0002-1498-0025; 0000-0002-9426-428X; Department of International Relations; N/A; Önay, Ayşen Ezgi Üstübici; Taşan, Eda Kirişçioğlu; Faculty Member; PhD Student; College of Administrative Sciences and Economics; Graduate School of Social Sciences and Humanities; 238439; N/AIt is well-documented that border controls make migration journeys riskier for people on the move. Policymakers construe deaths in migration journeys as resulting from the individual risk-taking attitudes of migrants. However, risks involved in migration journeys are not only related to border control measures. Based on the analysis of 30 semi-structured interviews conducted with Syrian and Afghan migrants in Turkey, we embrace a social constructionist approach to unpack how migrants form their aspirations based on their risk perceptions. Our findings explain why some migrants would still move onwards despite violent borders while others stay or search for "safer" ways for onward migration.Item Metadata only "Oh no, they caught it!": vicarious experience of COVID-19, protection motivation and protective behaviors(Sage Publications Ltd, 2023) 0000-0002-0886-7982; 0000-0002-2797-242X; 0000-0003-3550-9918; N/A; Department of Psychology; Department of Psychology; N/A; N/A; Cemalcılar, Zeynep; Lemi, Baruh; Özden, Mehmet; Elazab, Khaled; Faculty Member; Faculty Member; Master Student; Master Student; College of Social Sciences and Humanities; College of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; 40374; 36113; N/A; N/AUtilizing the components of the protection motivation theory, this study investigated the role of close others' diagnosis of COVID-19 (as a vicarious experience) in individuals' adherence to protective behavior against COVID-19. Path analysis of online survey data from 3695 participants showed that the presence of a diagnosed close other was positively related to perceived vulnerability, while being negatively related to perceived response efficacy and self-efficacy. In addition, perceived severity and efficacy appraisals were positively associated with protective behavioral tendencies. Although efficacy appraisal mediated the relationship between vicarious experience and protective behavior, threat appraisal did not mediate this relationship. In sum, the results suggest that efficacy appraisal derived from vicarious experiences can be more consequential for protective behaviors than threat appraisal. Implications of these results on future large-scale health crises are discussed along with limitations and future directions.Publication Metadata only ‘Anti-commutable’ local pre-Leibniz algebroids and admissible connections(Elsevier, 2023) Department of Physics; N/A; Department of Physics; Dereli, Tekin; Doğan, Keremcan; Faculty Member; PhD Student; College of Sciences; Graduate School of Sciences and Engineering; 201358; N/AThe concept of algebroid is convenient as a basis for constructions of geometrical frameworks. For example, metric-affine and generalized geometries can be written on Lie and Courant algebroids, respectively. Furthermore, string theories might make use of many other algebroids such as metric algebroids, higher Courant algebroids, or conformal Courant algebroids. Working on the possibly most general algebroid structure, which generalizes many of the algebroids used in the literature, is fruitful as it creates a chance to study all of them at once. Local pre-Leibniz algebroids are such general ones in which metric-connection geometries are possible to construct. On the other hand, the existence of the 'locality operator', which is present for the left-Leibniz rule for the bracket, necessitates the modification of torsion and curvature operators in order to achieve tensorial quantities. In this paper, this modification of torsion and curvature is explained from the point of view that the modification is applied to the bracket instead. This leads one to consider 'anti-commutable' local pre-Leibniz algebroids which satisfy an anti-commutativity-like property defined with respect to a choice of an equivalence class of connections. These 'admissible' connections are claimed to be the necessary ones while working on a geometry of algebroids. This claim is due to the fact that one can prove many desirable properties and relations if one uses only admissible connections. For instance, for admissible connections, we prove the first and second Bianchi identities, Cartan structure equations, Cartan magic formula, the construction of Levi-Civita connections, the decomposition of connection in terms of torsion and non-metricity. These all are possible because the modified bracket becomes anti-symmetric for an admissible connection so that one can apply the machinery of almost-or pre-Lie algebroids. We investigate various algebroid structures from the literature and show that they admit admissible connections which are metric-compatible in some generalized sense. Moreover, we prove that local pre-Leibniz algebroids that are not anti-commutable cannot be equipped with a torsion-free, and in particular Levi-Civita, connection.Item Metadata only ‘How should my family assistant be?’: initial perceptions about prospective and anticipated use of in-home virtual assistants in an emerging context(Taylor and Francis Ltd., 2023) 0000-0002-5261-5889; Töre Yargın, Gülşen; Süner-Pla-Cerdà, Sedef; Department of Media and Visual Arts; Günay, Aslı; Faculty Member; College of Social Sciences and Humanities; 150162Virtual Assistants (VAs) are at the forefront of state-of-the-art interactions for smart technologies at home. The prospective users’ prior to use perception of such assistants is crucial to discover new possibilities for design and to be able to elicit positive user experiences. However, this has not been investigated in detail within family life in emerging contexts though demand for their ownership increases. This study scrutinises potential users’ initial perceptions about the prospective and anticipated uses of VAs within family life in Turkey, as an emerging context, through in-depth interviews with 15 families. During the interviews, the participant families watched publicly available videos of four different VAs to elicit their perceptions. Results reveal that prospective users’ perceptions and expectations focus heavily on VAs’ possible effects on the family well-being, besides the concerns about usability and issues related to privacy, safety, and security. While proposing VAs for home use in such an emerging market, their potential positive effects on the family well-being should be promoted whereas perceived negative effects should be resolved by considering smartness, personality and trust dimensions. The study reveals relationships between these dimensions and perceptions of and expectations about VA use in home context in an emerging market. © 2022 Informa UK Limited, trading as Taylor & Francis Group.Publication Metadata only (Im)moral borders in practice(Taylor & Francis, 2021) El Qadim, Nora; Isleyen, Beste; de Vries, Leonie Ansems; Hansen, Signe Sofie; Lisle, Debbie; Simonneau, Damien; N/A; Karadağ, Sibel; Researcher; Migration Research Program at Koç University (MIReKoç) / Göç Araştırmaları Uygulama ve Araştırma Merkezi (MIReKoç); N/A; N/AThis Forum aims to push existing debates in critical border and migration studies over the featuring of morals, ethics and rights in everyday practices relating to the governance of the mobility of non-citizen populations. Its contributors steer away from the actual evaluation or advocacy of the good/just/ethical, focusing instead on the sociological examination of morals and ethics in practice, i.e. how actors understand morally and ethically the border and migration policies they implement or resist. A proliferating interest in the discursive and non-discursive materialisation of moral and ethical elements in asylum and migration policies has examined the intertwinement of care and control logics underlying the management of refugee camps, borders and borderzones, and hotspots alongside the deployment of search-and-rescue operations. Nevertheless, recent research has shown the need to unpack narratives and actions displaying values and symbols that are not necessarily encompassed within this intertwinement of compassion and repression. We argue that there is a need to pay more attention to the diversity, plurality and the operation of morality, ethics and rights in settings and geographies, and of including a diversity of actors both across and beyond EUrope.Publication Metadata only 21 fs Cr:LiSAF laser mode locked with a single-walled carbon nanotube saturable absorber(Optical Soc Amer, 2019) Bae, Ji Eun; Rotermund, Fabian; Demirbaş, Ümit; N/A; N/A; N/A; Department of Physics; Department of Physics; Tanısalı, Gökhan; Toker, Işınsu Baylam; Taşçı, Mısra; Sennaroğlu, Alphan; PhD Student; PhD Student; Undergraduate Student; Faculty Member; Koç University Surface Science and Technology Center (KUYTAM) / Koç Üniversitesi Yüzey Teknolojileri Araştırmaları Merkezi (KUYTAM); Graduate School of Sciences and Engineering; Graduate School of Sciences and Engineering; School of Medicine; College of Sciences; N/A; N/A; N/A; 23851We report the shortest femtosecond pulses directly generated from a solid-state laser that is mode locked by using a single-walled carbon nanotube saturable absorber (SWCNT-SA). In the experiments, we used a 660 nm diode-pumped, low-threshold extended-cavity Cr:LiSAF laser operating around 850 nm with a repetition rate of 47.9 MHz. The SWCNT-SA mode-locked Cr:LiSAF laser produced 21 fs pulses with a time-bandwidth product of 0.56 by using only 210 mW of pump power. Pump-probe spectroscopy measurements showed that the SWCNT-SA exhibited saturable absorption with slow and fast decay times of 2.7 ps and 0.4 ps. The single-pass modulation depth and saturation fluence of the SWCNT-SA were further determined as 0.3% and 45 mu J/cm(2) at the pump wavelength of 850 nm.Publication Metadata only 268th ENMC workshop - Genetic diagnosis, clinical classification, outcome measures, and biomarkers in Facioscapulohumeral Muscular Dystrophy (FSHD): Relevance for clinical trials(Elsevier B.V., 2023) Montagnese F, de Valle K, Lemmers RJLF, Mul K, Dumonceaux J, Voermans N; 268th ENMC workshop participants.; Oflazer, Piraye; ; School of Medicine;Highlights This ENMC workshop has seen the participation of many important stakeholders working together to improve trial readiness in FSHD: patients and patients’ organizations (FSHD-Europe, FSHD-Society and FSHD Global), neuromuscular clinicians, geneticists, basic researchers, representatives of the TREAT-NMD network, the FSHD-CTRN and EMA. COMs represent useful tools for the standardized collection of clinical features but need to be selected to match the clinical setting of use. For patient care, they need to be informative, with practical and time efficient utility so as not to detract from clinical care. For clinical trial purposes, the need to be reliable, valid, meaningful and sensitive to change to better depict therapeutic responses. An optimized clinical evaluation and genetic test form is one of the goals of WG1 and 2. A diagnostic flowchart for FSHD1 and FSHD2 has been proposed. Another important unmet need for clinical trial readiness in FSHD is the identification of good therapeutic biomarkers, which ideally should be quantitative, non-invasive, applicable across the entire range of disease severity, sensitive to change, reliable and clinically meaningful. The WG 3 will produce standard operating procedures (SOPs) for DUX4 detection. Similarly, large differences in the reporting of studies performed on animal models, thus hindering interpretation, repeatability and comparison of the results need to be addressed. Guidelines regarding minimum information for publication of work including animal models for FSHD will therefore be published.Publication Metadata only 2d -> 3d polycatenated and 3d -> 3d interpenetrated metal-organic frameworks constructed from thiophene-2,5-dicarboxylate and rigid bis(imidazole) ligands(Elsevier, 2014) Erer, Hakan; Yesilel, Okan Zafer; Arici, Mursel; Buyukgungor, Orhan; Department of Chemical and Biological Engineering; Department of Chemical and Biological Engineering; Keskin, Seda; Faculty Member; College of Engineering; 40548Hydrothermal reactions of rigid 1,4-bis(imidazol-1-yl)benzene (dib) and 1,4-bis(imidazol-1-yl)-2, 5-dimethylbenzene (dimb) with deprotonated thiophene-2,5-dicarboxylic acid (H(2)tdc) in the presence of Zn(II) and Cd(II) salts in H2O produced three new metal-organic frameworks, namely, [Zn(mu-tdc)(H2O) (mu-dib)](n) (1), [Cd(mu-tdc)(H2O)(mu-dib)(n) (2), and {[Cd-2(mu(3)-tdc)(2)(mu-dimb)(2)] center dot (H2O)}(n) (3). These MOFs were characterized by FT-IR spectroscopy, elemental, thermal (TG, DTA, DTG and DSC), and single-crystal X-ray diffraction analyses. Isomorphous complexes 1 and 2 reveal polycatenated 2D+2D -> 3D framework based on an undulated (4,4)-sql layer. Complex 3 exhibits a new 4-fold interpenetrating 3D framework with the point symbol of 6(6). Molecular simulations were used to assess the potentials of the complexes for H-2 storage application. Moreover, these coordination polymers exhibit blue fluorescent emission bands in the solid state at room temperature.Publication Metadata only 3D printed kombucha biomaterial as a tissue scaffold and L929 cell cytotoxicity assay(Wiley, 2024) Yanbakan, Edaguel; Tuncel, Tugba; Kocak Sezgin, Ayse; Bozoglan, Emirhan; Berikten, Derya; Kar, Fatih; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Bağlan, İlkyaz; College of SciencesTissue engineering includes the construction of tissue-organ scaffold. The advantage of three-dimensional scaffolds over two-dimensional scaffolds is that they provide homeostasis for a longer time. The microbial community in Symbiotic culture of bacteria and yeast (SCOBY) can be a source for kombucha (kombu tea) production. In this study, it was aimed to investigate the usage of SCOBY, which produces bacterial cellulose, as a biomaterial and 3D scaffold material. 3D printable biomaterial was obtained by partial hydrolysis of oolong tea and black tea kombucha biofilms. In order to investigate the usage of 3D kombucha biomaterial as a tissue scaffold, "L929 cell line 3D cell culture" was created and cell viability was tested in the biomaterial. At the end of the 21st day, black tea showed 51% and oolong tea 73% viability. The cytotoxicity of the materials prepared by lyophilizing oolong and black tea kombucha beverages in fibroblast cell culture was determined. Black tea IC50 value: 7.53 mg, oolong tea IC50 value is found as 6.05 mg. Fibroblast viability in 3D biomaterial + lyophilized oolong and black tea kombucha beverages, which were created using the amounts determined to these values, were investigated by cell culture Fibroblasts in lyophilized and 3D biomaterial showed viability of 58% in black tea and 78% in oolong tea at the end of the 7th day. In SEM analysis, it was concluded that fibroblast cells created adhesion to the biomaterial. 3D biomaterial from kombucha mushroom culture can be used as tissue scaffold and biomaterial.Publication Open Access 3D printed microneedles for point of care biosensing applications(Multidisciplinary Digital Publishing Institute (MDPI), 2022) Department of Mechanical Engineering; Department of Mechanical Engineering; Sarabi, Misagh Rezapour; Nakhjavani, Sattar Akbar; Taşoğlu, Savaş; Faculty Member; Koç University Research Center for Translational Medicine (KUTTAM) / Koç Üniversitesi Translasyonel Tıp Araştırma Merkezi (KUTTAM); KU Arçelik Research Center for Creative Industries (KUAR) / KU Arçelik Yaratıcı Endüstriler Uygulama ve Araştırma Merkezi (KUAR); Koç Üniversitesi İş Bankası Yapay Zeka Uygulama ve Araştırma Merkezi (KUIS AI)/ Koç University İş Bank Artificial Intelligence Center (KUIS AI); Graduate School of Sciences and Engineering; College of Engineering; N/A; N/A; 291971Microneedles (MNs) are an emerging technology for user-friendly and minimally invasive injection, offering less pain and lower tissue damage in comparison to conventional needles. With their ability to extract body fluids, MNs are among the convenient candidates for developing biosensing setups, where target molecules/biomarkers are detected by the biosensor using the sample collected with the MNs. Herein, we discuss the 3D printing of microneedle arrays (MNAs) toward enabling point-of-care (POC) biosensing applications.