36 research outputs found

    Inspired or foolhardy: sensemaking, confidence and entrepreneurs' decision-making.

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    The purpose of this paper is to investigate the role of confidence in how both new and experienced entrepreneurs interpret and make sense of their business environment to inform decision-making. We illustrate our conceptual arguments with descriptive results from a large-scale (n = 6289) survey on entrepreneurs' perception of business performance and their decisions taken at a time of uncertainty in an economic downturn. Quantitative findings are stratified along experiential lines to explore heterogeneity in entrepreneurial decision-making and directly inform our conceptual arguments, while qualitative data from open questions are used to explain the role of confidence. Newer entrepreneurs are found to be more optimistic in the face of environmental risk, which impacts on their decision-making and innovative capabilities. However, the more experienced entrepreneurs warily maintain margin and restructure to adapt to environmental changes. Instead of looking directly at the confidence of individuals, we show how confidence impacts sensemaking, and ultimately, decision-making. These insights inform research on the behaviour of novice and experienced entrepreneurs in relation to innovative business activities. Specifically, blanket assumptions on the role of confidence may be misplaced as its impact changes with experience to alter how entrepreneurs make sense of their environment

    De-centring the securitization of asylum and migration in the European Union: Securitization, vulnerability and the role of Turkey

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    This article contributes to the debates on de-centring the analysis of migration governance in Europe by focusing on the potential role of external actors in the securitisation of asylum and migration in the European Union (EU). Although there has been a growing amount of literature on the securitisation of asylum and migration in the EU, the role possibly played by external actors in this securitisation process has not been considered to date. This article addresses this gap using the case of Turkey. Theoretically, it contributes to the development of the securitisation framework by de-centring the study of securitisation processes. It argues that, from the vantage point of an external actor, a securitisation process highlights the existence of a vulnerability to a specific phenomenon that is perceived to be threatening. An external actor can then decide to exploit this vulnerability for its own gain, notably by making threats that play on the fears of the other political actor. Empirically, the article demonstrates how the Turkish government has been able to exploit the vulnerability of European countries to migration flows, which had been highlighted by the social construction of asylum and migration as security issues. By repeatedly threatening to send more asylum-seekers and migrants Europe’s way, the Turkish authorities have managed to secure some significant financial and political benefits for themselves in the last few years

    Investigation of Brucella seroprevalence in human and livestocks in Igdır, Turkey

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    Brucellosis is a zoonotic disease of worldwide and still remains endemic in some developing countries, especially in Turkey. Milk is the main food product serving as a vector for Brucella. In this study we aimed to investigate the seroprevalence of human and animal brucellosis. The study group consisted of 358 subjects who had high risk occupations of animal breeder and farmer. The test results were interpreted and titers equal or in excess of 1/40 were considered significant. 189 farm animals were incorporated to our research. Among these animals, 104 of them were sheep and goat and 85 of them were cattle. The Brucellosis Milk Ring Test was used to test raw milk samples collected the selected herds in the study area. The seroprevalence of human brucellosis was 6.7%. Seroprevalence of animal brucellosis was found as 22.75% in livestocks. This study is important for being the first study in recent years that demonstrates the Brucella seropositivity rates in Igdır Province. This high seropositivity in our region may depend on the high rates of animal brucellosis; those of which were inadequate under control by veterinary and by vaccination and people who consume the milk by without boiling. © 2016 Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved

    Single phase flow of nanofluid including graphite and water in a microchannel

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    In this study, convective heat transfer performance of a nanofluids containing graphite is studied in an industrial microchannel. In the experiments, initially, to prepare nanofluids at the volume fraction values of 0.5, 1, 1.5, 2%, distilled water has been employed as the base liquid. To provide sedimentation and stabilization of nanofluids in distilled water, Cetyltrimethylammonium bromide (CTAB) is utilized as surfactant. Thermophysical properties of nanofluids such as thermal conductivity, dynamic viscosity, and specific heat are determined experimentally. Furthermore, by building an experimental setup, in the temperature range of 20–30 °C and with temperature intervals of 2 °C, performance experiments are carried out in a microchannel of which hydraulic diameter is 1.6 × 10-3 m. Additionally, experiments have been conducted using nanofluids at different volumetric rates from 1 to 7 l min-1, heat fluxes from 100 to 1100 W, and volume fractions from 0.5 to 2%. Measuring heat flux, temperature, and flow rate, outcomes such as convective heat transfer coefficient, Reynolds number, and Nusselt number are calculated. The validation process of the experimental results has been performed by plotting the figures of Nusselt numbers vs Reynolds ones, and heat transfer coefficient vs supplied heat considering distilled water and nanofluids having various volumetric proportions. Regarding with the performance of nanofluids against distilled water under similar operating conditions, some proportional positive increase are acquired. Using outcomes attained from experiments, new correlations for Nusselt number have been derived with the R2 values around 0.96, and afterward by means of those correlations experimental data have been compared with those in the literature. A large number of measured and calculated data are given in the paper for other researchers to validate their theoretical models. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.Thailand Research Fund King Mongkut's University of Technology Thonburi Riordan FoundationThis study has been financially supported by Niğde Ömer Halisdemir University Scientific Research Projects Coordination Department, Project Number: FEB 2013/08-BAGEP. All authors also grateful for the Thailand Research Fund (TRF), the National Research University Project (NRU) and King Mongkut’s University of Technology Thonburi through the “KMUTT 55 th Anniversary Commemorative Fund”

    Applications of hecke operator to generalized dedekind eta functions

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    Bu çalışma, 18-22 Eylül 2009 tarihleri arasında Rethymnon[Yunanistan]’da düzenlenen International Conference on Numerical Analysis and Applied Mathematics’da bildiri olarak sunulmuştur.The aim of this paper is to give relations between generalized Dedekind eta functions, theta functions, Dedekind sums, Hardy-Berndt sums and Hecke operators.Akdeniz ÜniversitesiGreek Minist Educ & Religious AffairsEuropean Soc Computat Methods Sci & Eng

    Biochemical Analysis of Germinal Membrane and Cyst Fluid by Raman Spectroscopy in Echinococcosis

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    Amaç: Hydatidosis, Echinococcus granulosus’un larva evresinin neden olduğu zoonotik paraziter bir enfeksiyondur. Çalışmada, karaciğer tutulumu olan hastaların cerrahi sırasında elde edilen germinal membran ve kist sıvılarının Raman spektroskopisi ile moleküler düzeyde biyokimyasal yapılarının incelenmesi amaçlanmıştır. Yöntemler: Çalışmada, germinal membran ve kist sıvılarının mitokondriyal gen bölgesine göre moleküler karakterizasyonları belirlenmiş ve filogenetik analizleri yapılmıştır. Örneklerde Raman spektroskopisi kullanılarak 300-1800 cm-1 arasındaki spektral bantlar incelenmiştir. Bulgular: PZR analizleri sonucunda hastalardan elde edilen germinal membranlarda ve kist sıvılarında yaklaşık 400 bç büyüklüğünde DNA bandı elde edilmiştir. Germinal membranda 780, 880, 970, 1151, 1200, 1270 cm-1’de, kist sıvısında 780 ve 1200 cm-1’de farklı pikler gözlenmiştir. 1333-1335 cm-1’de elde edilen en şiddetli spektral bantların CH3CH2 kollajen ve polinükleotit zincirini gösteren modlar olduğu belirlenmiştir. Bu ise, E. granulosus’un moleküler düzeyde biyokimyasal yapısını gösteren spesifik pik olarak değerlendirilmiştir. Sonuç: Mikroorganizmaların tanımlanmasında ve biyolojik dokuların biyokimyasal analizlerinde; moleküler, serolojik ve konvansiyonel farklı tanı yöntemleri kullanılmaktadır. Bu yöntemlere ek olarak Raman spektroskopisinin hızlı, tahribatsız ve noninvaziv bir yöntem olduğu yapılan çalışmada gösterilmiştir. Dolayısıyla mikroorganizmaların temel biyokimyasal bileşenlerinin moleküler düzeyde analiz edilebilmesi bakımından alternatif bir yöntem olacağı düşünülmektedir.Objective: Hydatidosis is a zoonotic parasitic infection caused by the larval stage of Echinococcus granulosus. The aim of this study was to investigate the biochemical structures of germinal membrane and cyst fluids obtained from patients with liver involvement during surgery, by Raman spectroscopy at the molecular level. Methods: Molecular characterization of germinal membrane and cyst fluid according to mitochondrial gene region was determined and phylogenetic analysis was performed. Raman spectroscopy was used in samples and spectral bands between 300 and 1800 cm-1 were examined. Results: As a result of PCR, approximately 400 bp DNA band was obtained from germinal membranes and cyst fluids gathered from patients. Peaks were observed at 780, 880, 970, 1151, 1200, 1270 cm-1 for germinal membrane and at 780 and 1200 cm-1 for cyst fluid. The highest spectral bands were obtained at 1333-1335 cm-1 and were determined to be modes indicating the CH3CH2 collagen and polynucleotide chain. Conclusion: In the identification of microorganisms and biochemical analysis of biological tissues; different diagnostic methods such as molecular, serological and conventional methods are used. In addition to these methods, Raman spectroscopy has been shown in studies to be a fast, non-destructive and noninvasive method. Therefore, it is thought to be an alternative method for analyzing the basic biochemical components of microorganisms at molecular level
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