Rectorate / Rektörlük
Permanent URI for this collectionhttps://hdl.handle.net/11147/6849
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Article General Purpose and Focused Invention, Market Value, and Productivity(2024) Dindaroğlu, BurakWe study returns to general purpose and focused invention at the firm level for a panel of manufacturing firms in the U.S. for the period 1976-1995, by studying their relationships with market value and Total Factor Productivity. We construct stocks of patents that lie at the two relevant tails of the distribution of the generality index (Trajtenberg et al., 1997; Henderson et al, 1998) to measure general purpose and focused invention at the firm level. In line with expectations, there is a market value premium to focused invention, and a productivity premium to general purpose invention. Estimates for the value of focus indicate that moving a single patent from the upper tail of the generality distribution to the lower tail would increase market value by .24×q million 1992 dollars on average, where q is Tobin’s q. The firm with the average general patent stock would gain 6.7×q million in market value if all its patents at the highest quartile of the generality distribution were moved to the lowest. In terms of the value of general purposeness, moving all its focused patents to the general category increases Total Factor Productivity by 2.3% to 2.8%, and five-year productivity growth by 3.9% to 5.2%, for the average firm. A potential implication is that corporate basic research is associated with significant long-term benefits in terms of productivity growth.Article Citation - Scopus: 1İzmir'in bir dağ köyü: Yamanlar ve Yamanlar Yörükleri üzerine etnotarihsel bir inceleme(Rector CIU Cyprus int Univ, 2023) Ustuk, OzanThis study examines the history, language, social, and economic transformation of the Yuruks living in the Yamanlar Village located in the Karsiyaka district, where there is relatively little information in the literature despite its proximity to the Izmir city center. Information collected from the Ottoman Era cemetery adjoining the village reveals that the Yamanlar Yuruks have lived here for at least 400 years. Mount Yamanlar, where the village is located, is of great importance because of its ancient history, as it witnessed the founding of Izmir (Smyrna). The social and economic lifestyle in the village has transformed as the city expanded toward residential areas atop Mount Yamanlar. The loss of traditional livelihood practices challenged the villagers and severely influenced their customs, which might be considered valuable pieces of cultural heritage. In this study, we conducted fieldwork, during which various data collection methods and techniques were employed to describe daily life in the village. Within the scope of this study, semi-structured and unstructured interviews were conducted with the local people, and an oral historical study was carried out. With this method, we aimed to present an ethnohistorical description of the Yamanlar Village by trying to establish a balance between the analysis of both written documents and oral data to make sense of the social and economic change it has undergone and to contribute to the literature on Izmir Yuruks.Book Part Eu as a Good (enough) Governance Exporter in Kosovo? Local Views on the Aborted Kosovo E Re Power Plant Project(Springer, 2022) Buhari Gülmez, Didem; Aydın Dikmen, BengüThis study focuses on the EU's perceived role in Kosovo as a good governance exporter through political conditionality. Local debates on the EU's stance towards the recently aborted coal power plant project (Kosovo e Re) reflect a disappointment with the EU's failure to prioritise good governance reforms that have not been implemented sufficiently in Kosovo. The study mainly benefits from interviews conducted in Pristina in 2019 in order to explore various EU, domestic and international factors hindering the EU's capability as a good governance exporter. Following the EU's limited transformative agency in contested states, it concludes that the EU is perceived by local actors in Kosovo as a "good enough governance" exporter that favours stability in the region and transatlantic partnership at the expense of good governance reforms. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.Book Part Citation - Scopus: 1Field Experiments in Bargaining(Springer, 2022) Dindaroğlu, Burak; Ertaç, SedaUnderstanding price formation and surplus division in bargaining contexts has long been of interest to economists. Laboratory experiments contribute to our understanding of bargaining by inducing valuations and costs, which are usually unobserved in natural negotiation settings, and allow control over the negotiation process. Field experiments, on the other hand, allow economists to study bargaining in more natural contexts with higher external validity, and can be particularly useful when bargaining behavior draws on context-specific characteristics and experiences that may be stripped in lab settings or involves biases that would not surface under observability. In this chapter, we provide an overview of field experiments studying bargaining behavior and outcomes in a variety of settings, from bargaining for auto rickshaw to markets for livestock. We offer a methodological discussion, position field experiments in bargaining in the tradition of field experiments in economics at large, and highlight difficulties in the design and implementation of fieldwork for such environments. We also discuss potential areas and issues where future field experiments are of special importance for understanding price formation in bargaining. © The Editor(s) (if applicable) and The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022.Book Part Citation - Scopus: 1Destined for Coal?: a "hierarchy of Harms" and the Prospects of Renewable Energy in Kosovo(Springer, 2022) Aydın Dikmen, Bengü; Buhari Gülmez, DidemRelying on interviews conducted in the summer of 2019 with parliamentary advisors, civil society activists, public officials and the EU, OSCE, and UNDP missions in Kosovo, this study provides an overview of the debates about the building of the new coal power plant by a US-led (UK-based) Company ContourGlobal. It discusses how different actors in Kosovo state and society approach the renewable energy question. An important obstacle against Kosovo's transition to renewable energy derives from the absence of consensus about the main threats and goals facing Kosovo. In this context, rationalist and constructivist stances imply different "hierarchies of harms". © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022. All rights reserved.Article International Investors, Volatility, and Herd Behavior: Borsa İstanbul, 2001-2016(2020) Akçaalan, Ezgi; Dindaroğlu, Burak; Binatlı, Ayla OğuşWe study herding in Borsa Istanbul between 2001 and 2016, focusing on the effects of international investors and market volatility. Herding explains 31% of total variability in the cross sectional standard deviation of beta values, controlling for market fundamentals. We perform time-series analysis of a herding index and find that herding increases following increased trading by international investors, but falls with overall trading volume on the market. Herding rises in response to increased volatility, rather than leading to it, against previous arguments. Investors do not herd during economic crises, but following important events that raise political tension in the country.Article Citation - WoS: 205Citation - Scopus: 159Search for Resonances and Quantum Black Holes Using Dijet Mass Spectra in Proton-Proton Collisions at S =8tev(American Physical Society, 2015) Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Hegeman, J.A search for resonances and quantum black holes is performed using the dijet mass spectra measured in proton-proton collisions at s=8TeV with the CMS detector at the LHC. The data set corresponds to an integrated luminosity of 19.7fb-1. In a search for narrow resonances that couple to quark-quark, quark-gluon, or gluon-gluon pairs, model-independent upper limits, at 95% confidence level, are obtained on the production cross section of resonances, with masses above 1.2 TeV. When interpreted in the context of specific models the limits exclude string resonances with masses below 5.0 TeV; excited quarks below 3.5 TeV; scalar diquarks below 4.7 TeV; W′ bosons below 1.9 TeV or between 2.0 and 2.2 TeV; Z′ bosons below 1.7 TeV; and Randall-Sundrum gravitons below 1.6 TeV. A separate search is conducted for narrow resonances that decay to final states including b quarks. The first exclusion limit is set for excited b quarks, with a lower mass limit between 1.2 and 1.6 TeV depending on their decay properties. Searches are also carried out for wide resonances, assuming for the first time width-to-mass ratios up to 30%, and for quantum black holes with a range of model parameters. The wide resonance search excludes axigluons and colorons with mass below 3.6 TeV, and color-octet scalars with mass below 2.5 TeV. Lower bounds between 5.0 and 6.3 TeV are set on the masses of quantum black holes. © 2015 CERN, for the CMS Collaboration.Article Citation - WoS: 1Citation - Scopus: 6Search for Supersymmetry With Photons in Pp Collisions at S =8tev(American Physical Society, 2015) Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Calvo, E.Two searches for physics beyond the standard model in events containing photons are presented. The data sample used corresponds to an integrated luminosity of 19.7fb-1 of proton-proton collisions at s=8TeV, collected with the CMS experiment at the CERN LHC. The analyses pursue different inclusive search strategies. One analysis requires at least one photon, at least two jets, and a large amount of transverse momentum imbalance, while the other selects events with at least two photons and at least one jet, and uses the razor variables to search for signal events. The background expected from standard model processes is evaluated mainly from data. The results are interpreted in the context of general gauge-mediated supersymmetry, with the next-to-lightest supersymmetric particle either a bino- or wino-like neutralino, and within simplified model scenarios. Upper limits at the 95% confidence level are obtained for cross sections as functions of the masses of the intermediate supersymmetric particles. © 2015 CERN. © 2015 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the "http://creativecommons.org/licenses/by/3.0/" Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.Article Citation - WoS: 65Citation - Scopus: 62Search for the standard model Higgs boson produced through vector boson fusion and decaying to b¯b(American Physical Society, 2015) CMS Collaboration; Karapınar, GülerA first search is reported for a standard model Higgs boson (H) that is produced through vector boson fusion and decays to a bottom-quark pair. Two data samples, corresponding to integrated luminosities of 19.8fb-1 and 18.3fb-1 of proton-proton collisions at s=8TeV were selected for this channel at the CERN LHC. The observed significance in these data samples for a H→bb¯ signal at a mass of 125 GeV is 2.2 standard deviations, while the expected significance is 0.8 standard deviations. The fitted signal strength μ=σ/σSM=2.8-1.4+1.6. The combination of this result with other CMS searches for the Higgs boson decaying to a b-quark pair yields a signal strength of 1.0±0.4, corresponding to a signal significance of 2.6 standard deviations for a Higgs boson mass of 125 GeV. © 2015 CERN.Article Citation - WoS: 48Citation - Scopus: 69Limits on the Higgs Boson Lifetime and Width From Its Decay To Four Charged Leptons(American Physical Society, 2015) Khachatryan, V.; Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Asilar, E.; Soares, M.S.Constraints on the lifetime and width of the Higgs boson are obtained from H→ZZ→4ℓ events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7fb-1 at a center-of-mass energy of 7 and 8 TeV, respectively. The measurement of the Higgs boson lifetime is derived from its flight distance in the CMS detector with an upper bound of τH<1.9×10-13s at the 95% confidence level (C.L.), corresponding to a lower bound on the width of ΓH>3.5×10-9MeV. The measurement of the width is obtained from an off-shell production technique, generalized to include anomalous couplings of the Higgs boson to two electroweak bosons. From this measurement, a joint constraint is set on the Higgs boson width and a parameter fΛQ that expresses an anomalous coupling contribution as an on-shell cross-section fraction. The limit on the Higgs boson width is ΓH<46MeV with fΛQ unconstrained and ΓH<26MeV for fΛQ=0 at the 95% C.L. The constraint fΛQ<3.8×10-3 at the 95% C.L. is obtained for the expected standard model Higgs boson width. © 2015 CERN, for the CMS. Published by the American Physical Society.