Scopus İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://gcris.khas.edu.tr/handle/20.500.12469/1248

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Citation Count: 3
Abortion services at hospitals in Istanbul
(Taylor & Francis Ltd, 2017) Louıse Şimşek, Mary
Objective: Despite the existence of a liberal law on abortion in Turkey there is growing evidence that actually securing an abortion in Istanbul may prove difficult. This study aimed to determine whether or not state hospitals and private hospitals that accept state health insurance in Istanbul are providing abortion services and for what indications. Method: Between October and December 2015 a mystery patient telephone survey of 154 hospitals 43 public and 111 private in Istanbul was conducted. Results: 14% of the state hospitals in Istanbul perform abortions without restriction as to reason provided in the current law while 60% provide the service if there is a medical necessity. A quarter of state hospitals in Istanbul do not provide abortion services at all. 48.6% of private hospitals that accept the state health insurance also provide for abortion without restriction while 10% do not provide abortion services under any circumstances. Key conclusions: State and private hospitals in Istanbul are not providing abortion services to the full extent allowed under the law. The low numbers of state hospitals offering abortions without restriction indicates a de facto privatization of the service. This same trend is also visible in many private hospitals partnering with the state that do not provide abortion care. While many women may choose a private provider the lack of provision of abortion care at state hospitals and those private hospitals working with the state leaves women little option but to purchase these services from private providers at some times subtantial costs.
Citation Count: 5
Acute myeloblastic leukemia achieving complete remission with Amifostine alone
(2002) Öztürk, Ahmet Kutlu; Orhan, Bülent; Türken, Orhan; Etiz, Durmuş; Yaylacı, Mustafa; Üskent, Necdet
Amifostine, a phosphorylated thiol-amine, is known as a cytoprotective agent especially for cisplatin containing chemotherapies. Apart from the cytoprotective role, Amifostine could also be used in the treatment of hematologic malignancies such as myelodysplastic syndrome (MDS) and acute myeloblastic leukemia (AML), as a treatment option or for potentiating the effects of cytotoxic agents. We tried to use Amifostine in a patient with AML, which did not respond to conventional cytotoxic chemotherapy and aimed to publish the results. The patient was a 77-year-old male patient, he was diagnosed as AML by peripheral blood smear and bone marrow aspiration. Treatment commenced with low dose cytosine arabinoside (Ara-C) but the therapy should have ceased due to patient intolerance. The patient refused further therapy and he was offered to have Amifostine treatment. Amifostine was administered 200 mg/m2 three times a week, with ciprofloxacin, pentoxifyllin and dexamethasone. Dramatic response was obtained after 8 weeks of administration. Blast rate was reduced from 35 to 7% in bone marrow aspiration; pancytopenia was restored to normal levels. This remission was maintained through 8 more weeks. Amifostine treatment was restarted after he relapsed but this time he did not respond to the treatment and died of gastrointestinal bleeding on the 8th week of treatment.
Citation Count: 0
Adverse selection in cryptocurrency markets
(Wiley, 2023) Tiniç, Murat; Sensoy, Ahmet; Akyildirim, Erdinc; Corbet, Shaen
In this article we investigate the influence that information asymmetry may have on future volatility, liquidity, market toxicity, and returns within cryptocurrency markets. We use the adverse-selection component of the effective spread as a proxy for overall information asymmetry. Using order and trade data from the Bitfinex exchange, we first document statistically significant adverse-selection costs for major cryptocurrencies. Also, our results suggest that adverse-selection costs, on average, correspond to 10% of the estimated effective spread, indicating an economically significant impact of adverse-selection risk on transaction costs in cryptocurrency markets. Finally, we document that adverse-selection costs are important predictors of intraday volatility, liquidity, market toxicity, and returns.
Citation Count: 0
Aesthetic Approach for Critical Sociology of Contemporary Communication Technology
(Sage Publications inc, 2024) Güney, Talat Balca Arda
Critical theory has already marked that technology often threatens civil liberties, personal autonomy, and rights. Heidegger, later Marcuse, emphasized how technology is not value-free in its own revealing power of the surrounding environment, external and inner nature. Throughout this paper, I explore how the aesthetic approach engages with critical theory and contributes to the sociology of media and communication. For this, I will theoretically survey the terms of sociality under the forces of immediate communication, ubiquitous surveillance, and the compression of time and space that Baudrillard and Virilio once problematized through the lens of critical technology theory to adapt it to media and communication studies. I contend that techno-aesthetics that converge with Ranciere's dissensus can provide practical suggestions on an updated vocation of critical sociology. This article discusses the potential of aesthetic and social criticism of media for democratizing technology that Feenberg inserted. It is urgent to acknowledge the changing spatio-temporal aesthetic regimes that affect the societal imagination and limits of sociality and action to determine the next steps for achieving a commons-based society.
Citation Count: 6
Alone but together autonomous but related: Self-construal effects on happiness in social experiences
(Wiley, 2018) Merdin-Uygur, Ezgi; Hesapci, Ozlem
Communal tables and open workspaces have become popular servicescapes that is contemporary spaces for experiencing dining or working alone but together. Previous research demonstrates that experiencing with close others (e.g. with friends or family) increases happiness and satisfaction but experiences shared with strangers in contexts such as communal tables or workshops have not yet been thoroughly analyzed. Addressing this research gap from a social-psychological perspective we suggest that even though individuals are generally happier when they share experiences with loved ones self-construal plays a moderating role in the relationship. Individuals with high autonomy and high relatedness do not anticipate greater happiness from experiences shared with friends than with those shared with strangers. Three experimental studies (two online and one field) demonstrate this effect using different operationalizations of autonomy relatedness. Managerial implications are discussed and suggestions are made for future research.
Citation Count: 10
Analysis of efficiency and performance of global retail supply chains using integrated fuzzy SWARA and fuzzy EATWOS methods
(Springer, 2022) Görçün, Ömer Faruk; Zolfani, Sarfaraz Hashemkhani; Canakcioglu, Mustafa
The current paper aims to fill the two severe and significant gaps in the literature related to global retail chains. First, it presents the criteria set identified by performing comprehensive fieldwork together with experts highly experienced and have extensive knowledge of the retailing industry and a detailed literature review. Secondly, it proposes a robust, applicable, and powerful novel integrated MCDM framework dealing with many complicated uncertainties. As one of the significant practical and managerial implications, the current paper highlights the significance of sustainable retailing operations to better global retail chains. After the proposed model was implemented, a comprehensive sensitivity analysis was performed to test the validation of the model and its obtained results. According to the validation test results, A12 Walmart&ASDA has remained the best option for all scenarios. It has been observed that there are slight changes that did not change the overall results in the ranking performance of some decision alternatives. As a result, the analysis results prove that the proposed integrated fuzzy approach can be applied to solve highly complex decision-making problems encountered in various fields and the retailing industry.
Citation Count: 10
Antihepatitis B response to hepatitis B vaccine administered simultaneously with tetanus toxoid in nonresponder individuals
(Elsevier Science, 2002) Sönmez, Emine; Sönmez, Ali Suha; Bayındır, Yaşar; Coşkun, Diler; Ariturk, Sedat
In this prospective study our aim was to test the effect of simultaneous administration of preS2 and S containing recombinant hepatitis B vaccine (S2SRHB) with tetanus toxoid (TT) to the individuals who did not respond after three doses of hepatitis B vaccine previously. There were three groups (healthy individuals pregnant women hemodialysis patients) each was divided into two subgroups as groups A and B. Group A received S2SRHB + TT and group B received only S2SRHB. We found that in groups receiving both vaccines both seroconversion rate and antibody titer level were significantly higher (P < 0.05). In conclusion simultaneous administration of S2SRHB + TT is more effective than administration of S2SRHB alone. (C) 2002 Elsevier Science Ltd. All rights reserved.
Citation Count: 7
Apolipoprotein B gene variants are involved in the determination of blood glucose and lipid levels in patients with non-insulin dependent diabetes mellitus
(Wiley, 2006) Duman, Belgin Süsleyici; Öztürk, Melek; Yilmazer, Selma; Çağatay, Penbe; Hatemi, Hüsrev
We have examined the frequency of the EcoRI XbaI and MspI RFLPs of the apolipoprotein B (apo 13) gene in I 10 type 2 diabetic patients and 9 1 healthy control subjects in order to ascertain whether variation in this gene may influence the development of non-insulin dependent diabetes mellitus (type 2 diabetes). Serum lipids including total-cholesterol (T-Chol) triacylglycerol (TAG) apolipoprotein E (apo E) apolipoprotein Al (apo Al) apolipoprotein B and lipoprotein (a) (Lp(a)) were analysed. Genomic DNA was extracted and the apo B polymorphic regions amplified by the polymerase chain reaction. Regions carrying EcoRI XbaI and MspI restriction sites present in the apo B gene were amplified and digested separately by the respective enzymes. No significant difference for genotypic frequencies was observed for the EcoRI XbaI and MspI restriction sites in type 2 diabetic patients as compared to controls. Type 2 diabetic patients and controls with EcoRI +/+ and XbaI +/+ genotypes had higher apo E levels. The MspI +/+ genotype is more frequent in the patient and control groups With elevated T-Chol. Furthermore the EcoRI -/- XbaI -/- and MspI +/+ genotypes were found to be significantly more frequent in type 2 diabetic patients with higher blood glucose levels. This study identifies the apo B gene polymorphisms in modulating plasma lipid/lipoprotein and glucose levels in patients with type 2 diabetes. Copyright 0 2005 John Wiley & Sons Ltd.
Citation Count: 0
Background TV and infant-family interactions: Insights from home observations
(Wiley, 2024) Uzundag, Berna A.; Koskulu-Sancar, Suemeyye; Kuntay, Aylin C.
Background television has been found to negatively impact children's language development and self-regulatory skills, possibly due to decreased parent-child interactions. Most of the research on the relationship between background TV and caregiver-child interactions has been conducted in laboratory settings. In the current study, we conducted home observations and investigated whether infants engage in fewer interactions with family members in homes where background TV is more prevalent. We observed 32 infants at the ages of 8, 10, and 18 months in their home environments, coding for dyadic interactions (e.g., parent talking to and/or engaging with the child), triadic interactions (e.g., parent and infant play with a toy together), and infants' individual activities. Our findings revealed that background TV was negatively associated with the time infants spent in triadic interactions, positively associated with time spent engaging in individual activities, and not significantly related to the time spent in dyadic interactions. Apart from the relationship between background TV and individual activity time at 8 months, these associations remained significant even after accounting for families' socioeconomic status. These findings imply a correlation between background TV exposure and caregiver-infant-object interactions, warranting a longitudinal analysis with larger sample sizes.
Citation Count: 20
A behavioral analysis of investor diversification
(Routledge Journals Taylor & Francis Ltd, 2014) Fuertes, Ana-Maria; Muradoğlu, Gülnur; Öztürkkal, Belma
This paper studies the link between individual investors' portfolio diversification levels and various personal traits that proxy informational advantages and overconfidence. The analysis is based on objective data from the largest Turkish brokerage house tracking 59951 individual investors' accounts with a total of 3248654 million transactions over the period 2008-2010. Wealthier highly educated older investors working in the finance sector and those trading relatively often show higher diversification levels possibly because they are better equipped to obtain and process information. Finance professionals married investors and those placing high-volume orders through investment centers show poorer diversification possibly as a reflection of overconfidence. Our analysis reveals important nonlinear effects implying that the marginal impact of overconfidence on diversification is not uniform across investors but varies according to the investor's information gathering and processing abilities.
Citation Count: 0
Bianchi surfaces whose asymptotic lines are geodesic parallels
(Walter De Gruyter Gmbh, 2015) Arsan, Güler Gürpınar; Özdeğer, Abdulkadir
It is proved that every Bianchi surface in E-3 of class C-4 whose asymptotic lines are geodesic parallels is either a helicoid or a surface of revolution.
Botnets Unveiled: a Comprehensive Survey on Evolving Threats and Defense Strategies
(Wiley, 2024) Asadi, Mehdi; Jamali, Mohammad Ali Jabraeil; Heidari, Arash; Navimipour, Nima Jafari
Botnets have emerged as a significant internet security threat, comprising networks of compromised computers under the control of command and control (C&C) servers. These malevolent entities enable a range of malicious activities, from denial of service (DoS) attacks to spam distribution and phishing. Each bot operates as a malicious binary code on vulnerable hosts, granting remote control to attackers who can harness the combined processing power of these compromised hosts for synchronized, highly destructive attacks while maintaining anonymity. This survey explores botnets and their evolution, covering aspects such as their life cycles, C&C models, botnet communication protocols, detection methods, the unique environments botnets operate in, and strategies to evade detection tools. It analyzes research challenges and future directions related to botnets, with a particular focus on evasion and detection techniques, including methods like encryption and the use of covert channels for detection and the reinforcement of botnets. By reviewing existing research, the survey provides a comprehensive overview of botnets, from their origins to their evolving tactics, and evaluates how botnets evade detection and how to counteract their activities. Its primary goal is to inform the research community about the changing landscape of botnets and the challenges in combating these threats, offering guidance on addressing security concerns effectively through the highlighting of evasion and detection methods. The survey concludes by presenting future research directions, including using encryption and covert channels for detection and strategies to strengthen botnets. This aims to guide researchers in developing more robust security measures to combat botnets effectively. Exploring botnets: evolution, tactics, countermeasures. This survey dives into botnets, covering life cycles, communication, and evasion tactics. It highlights challenges and future strategies for combating cyber threats. image
Citation Count: 5
Cannabis tourists' perceived constraints to engaging in commercial cannabis tourism overseas: a comparison of first-time and repeat tourists
(Emerald Group Publishing Ltd, 2023) Kozak, Metin; Kozak, Metin; Ying, Tianyu
Purpose Given the increasing number of tourists exposed to commercially available cannabis, it is important to understand visitors' perceived constraints to cannabis consumption while travelling. This study aims to compare cannabis tourists' perceived constraints between first-time and repeat tourists to gain comprehensive understanding. Design/methodology/approach This study involved 32 conversational field interviews (5-10 min) with Chinese tourists who had smoked cannabis in coffee shops in Amsterdam to identify perceived constraints to engaging in cannabis tourism. The hierarchical constraint model (HCM) informed qualitative data coding using a deductive approach to compare first-time and repeat tourists. Content analysis was conducted manually. Findings Results showed that both tourist groups faced intrapersonal, interpersonal and structural perceived constraints to cannabis consumption. Differences in first-time and repeat cannabis tourists' perceived constraints were explained using the neutralization technique framework and psychological tactics, such as the defence of necessity, claims of entitlement, normal practice and claims of relative acceptability. In addition, social exchange theory was employed to explain why repeat cannabis tourists perceived fewer constraints than first-time tourists. Practical implications Although the current study did not intend to address the importance of cannabis tourism in places where cannabis is commercially available, findings offer empirical guidance for industry practitioners and policymakers regarding cannabis use education, prevention and policy in tourism contexts; related efforts can promote the sustainable development of this tourism market while protecting cannabis tourists' physical and psychological well-being. Originality/value This study makes important theoretical contributions regarding travel constraints in the unique context of cannabis tourism between first-time and repeat tourists. Findings will also enable academics, industry operators, policymakers and local residents of cannabis tourism destinations to better understand how these tourists decide whether to consume cannabis overseas. Differences in these perceived constraints between first-time and repeat tourists are discussed to highlight the dynamic nature of travel constraints.
Citation Count: 29
Cartoon Violence and Freedom of Expression
(Johns Hopkins Univ Press, 2008) Keane, David
The publication of the "Danish cartoons" generated a continuing conflict between freedom of expression and religious tolerance. The article examines the history of cartoon satire, invoking past examples of racial and religious discrimination in cartoons while emphasizing the important role cartoonists have played in criticizing and checking the exercise of power. The legal implications of the "Danish cartoons" is analyzed through the lens of international human rights law, in particular the concepts of hate speech, racial discrimination and religious defamation. Finally the present movement in the UN towards "cartooning for peace" is promoted.
Citation Count: 3
Cinema Has Split the Girl's Soul Into Pieces: Scrutinizing Representations of Women in Films From Turkey
(University of Southern California, 2020) Paça Cengiz, Esin
The 1980s in Turkey were marked by the emergence of new cinematic forms, including films dealing with issues regarding female subjectivity. This article argues that within the scope of an extensive body of films produced about women in the 1980s, Her Name Is Vasfiye, Aaahh Belinda!, How to Save Asiye, Ten Women, and My Dreams, My Love and You opened up a significant space for discussions about ideological constructions concerning images of women in cinema. By deploying reflexive and fragmented structures, laying bare the ideological operations of voice-over and dubbing, and deploying the screen personas Türkan Şoray and Müjde Ar as cinematic tools, these films offer up a critique of representations of women onscreen, including the trend of “women's films.”
Citation Count: 0
Circular formations of non-communicating robot groups via local strategies
(SAGE Publications Ltd, 2024) Kerestecioğlu, Feza; Şen,Ü.; Işıkver,Ç.; Göktekin,A.
Local strategies, which are based on cost minimization, to achieve circular formations of autonomous robot groups are presented. It is assumed that the group members have no communication capabilities or any means of interchanging information among themselves, and that they can only rely on their sensors, which provide relative positions of their nearby group members. It is verified on simulations that via appropriately defined cost functions arc, arc-triangle and circle formations are obtained, which can be maintained during navigation. © The Author(s) 2023.
Citation Count: 14
Collective remembering and future forecasting during the COVID-19 pandemic: How the impact of COVID-19 affected the themes and phenomenology of global and national memories across 15 countries
(Springer, 2023) Oner, Sezin; Watson, Lynn Ann; Adiguzel, Zeynep; Ergen, Irem; Bilgin, Ezgi; Curci, Antonietta; Cole, Scott
The COVID-19 pandemic created a unique set of circumstances in which to investigate collective memory and future simulations of events reported during the onset of a potentially historic event. Between early April and late June 2020, we asked over 4,000 individuals from 15 countries across four continents to report on remarkable (a) national and (b) global events that (i) had happened since the first cases of COVID-19 were reported, and (ii) they expected to happen in the future. Whereas themes of infections, lockdown, and politics dominated global and national past events in most countries, themes of economy, a second wave, and lockdown dominated future events. The themes and phenomenological characteristics of the events differed based on contextual group factors. First, across all conditions, the event themes differed to a small yet significant degree depending on the severity of the pandemic and stringency of governmental response at the national level. Second, participants reported national events as less negative and more vivid than global events, and group differences in emotional valence were largest for future events. This research demonstrates that even during the early stages of the pandemic, themes relating to its onset and course were shared across many countries, thus providing preliminary evidence for the emergence of collective memories of this event as it was occurring. Current findings provide a profile of past and future collective events from the early stages of the ongoing pandemic, and factors accounting for the consistencies and differences in event representations across 15 countries are discussed.
Citation Count: 7
Comparing task-based instruction and traditional instruction on task engagement and vocabulary development in secondary language education
(Routledge Journals Taylor & Francis Ltd, 2018) Page, Merve Halici; Mede, Enisa
The purpose of this study was to investigate and compare the impact of task-based instruction (TBI) and traditional instruction (TI) on the motivation and vocabulary development in secondary language education. The focus of the study was to also find out the perceptions of teachers about implementing these two instructional methods in their teaching practices. The participants were 97 students and 2 teachers engaged in the 7th grade EFL program at a private school in Istanbul Turkey. Data was collected quantitatively from a vocabulary check test and motivation scale as well as qualitatively from semi-structured interviews. The findings revealed that implementing TBI had positive impact on students' vocabulary development as well as their motivation. In line with these findings it was also suggested that teachers perceived TBI to be a more effective method to be incorporated in secondary grade language practices. Based on the gathered findings suggestions for redesigning and implementing the existing 7th grade EFL program were provided.
Citation Count: 3
Competing frameworks of Islamic law and secular civil law in Turkey: A case study on women's property and inheritance practices
(Pergamon-Elsevier Science Ltd, 2015) Louıse Şimşek, Mary; O'Neil, Mary Lou
The article stems from empirical research conducted with a group of women living in Istanbul who have conservative life styles bounded by an Islamic worldview. It attempts to illuminate the negotiation and contestation between the official civil law and Islamic law. The findings demonstrate that women inherit and bequeath property in a social setting where their gender roles are defined by their adherence to Islam. We argue that in Turkey women's inheritance practices are not determined solely in accordance with the secular civil law but rather are the result of a complex and intertwined combination of legal sources where an Islamic worldview often leads to the adoption of Islamic law. In other words the application of the secular civil law in Turkey is limited by the common practice of Islamic law. Rather than follow the gender equality mandated by the civil law the inheritance practices of many Islamic women are constituted with a deference to some aspects of Islamic law creating a situation of legal pluralism in Turkey. (C) 2014 Elsevier Ltd. All rights reserved.
Citation Count: 9
Computational Modeling and Analysis of Seljukid Muqarnas in Kayseri
(Association for Computing Machinery, 2022) Gökmen, Sabri; Baslk,A.; Aykln,Y.; Alacam,S.
As a historical and ornamental building element, muqarnas are widely found among the entrances of madrasas, mosques, and hans in Anatolian Seljuk architecture. In Kayseri (Turkey), muqarnas structures are characterized by symmetrical distribution of patterned geometric layers that presents computational rules for the design and construction of these ornamental structures. The presented research focuses on 12 unique muqarnas structures that are analyzed through a computational methodology combining photogrammetry, three-dimensional modeling, symmetry, and graph theory. The computational analysis shows that Seljukid muqarnas exhibit patterned branching of the symmetry axis between layers radiating from their geometric center. Using the modeled samples, the article analyzes inherent symmetry rules and growth patterns while offering a novel way of studying, modeling, and categorizing muqarnas. © 2022 Association for Computing Machinery.

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