6,110 research outputs found
Language learning strategies of language e-learners in Turkey
No full textThe purpose of this study was to determine the use of language learning strategies of e-learners and to understand whether there were any correlations between language learning strategies and academic achievement. Participants of the study were 274 e-learners, 132 males and 142 females, enrolled in an e-learning program from various majors and taking an English course through e-learning in Turkey. The Turkish version of Strategy Inventory of Language Learning (SILL) was used as the data collection instrument. The results of the study revealed that while participants used cognitive and affective strategies least, they preferred to take advantage of metacognitive and memory strategies the most. In addition, a significant difference was found for females in cognitive strategies and for males in metacognitive strategies. Finally, this study suggested that using language learning strategies had an effect on academic achievement. © The Author(s) 2015
Production and decay of excited electrons at the LHC
No full textWe study single production of excited electrons at the CERN LHC through contact interactions of fermions. Subsequent decays of excited electrons to ordinary electrons and light fermions via gauge and contact interactions are examined. The mass range accessible with the ATLAS detector is obtained. PACS: 12.60.Rc – 13.85.R
Modelling some stand parameters using Landsat 8 OLI and Sentinel-2 satellite images by machine learning techniques: a case study in Turkiye
No full textRemote sensing technologies have been extensively used in forest management in predicting stand parameters. The goal of this study is to use Landsat 8 and Sentinel-2 satellite images to estimate stand volume, basal area, number of trees, mean diameter, and top height. 180 temporary sample plots were taken in pure Crimean pine stands with varied structure. Reflectance, vegetation indices, and eight texture values were generated from Landsat 8 and Sentinel-2 satellite images. The stand parameters were modelled with the remotely sensed data using multiple linear regression, support vector machine, and deep learning techniques. The results showed that the support vector machine technique provided the highest level of model performance with 45 degrees orientation for number of trees (R-2 = 0.98, RMSE%=5.97) and 90 degrees orientation for basal area (R-2=0.91, RMSE%=15.22). The results indicated that the texture values presented better results than the reflectance and the vegetation indices in estimating the stand parameters
Face to face or e-learningin Turkish EFL context
No full textThis purpose of this study was to understand e-learners and face to face learners' views towards learning English through e-learning in vocational higher school context and to determine the role of academic achievement and gender in e-learning and face to face learning. This study was conducted at a state-run university in 2012-2013 academic year and subjects were 221 students from two different Vocational Higher Schools taking up English course through e-learning and traditional learning. The results of the study revealed that there was no significant difference between e-learners and face to face learners about the views towards learning English via e-learning. Furthermore, academic achievement and gender were not the strong determiners in e-learning compared with face to face learning
A new metabolic model of Drosophila melanogaster and the integrative analysis of Parkinson’s disease
No full textHigh conservation of the disease-associated genes between flies and humans facilitates the common use of Drosophila melanogaster to study metabolic disorders under controlled laboratory conditions. However, metabolic modeling studies are highly limited for this organism. We here report a comprehensively curated genome-scale metabolic network model of Drosophila using an orthology-based approach. The gene coverage and metabolic information of the draft model derived from a reference human model were expanded via Drosophila-specific KEGG and MetaCyc databases, with several curation steps to avoid metabolic redundancy and stoichiometric inconsistency. Furthermore, we performed literature-based curations to improve gene–reaction associations, subcellular metabolite locations, and various metabolic pathways. The performance of the resulting Drosophila model (8,230 reactions, 6,990 metabolites, and 2,388 genes), iDrosophila1 (https://github.com/SysBioGTU/iDrosophila), was assessed using flux balance analysis in comparison with the other currently available fly models leading to superior or comparable results. We also evaluated the transcriptome-based prediction capacity of iDrosophila1, where differential metabolic pathways during Parkinson’s disease could be successfully elucidated. Overall, iDrosophila1 is promising to investigate system-level metabolic alterations in response to genetic and environmental perturbations
Effect of different objective functions on control performance of tuned mass damper for a high-rise building considering soil–structure interaction
No full textThis paper deals with the optimization of the tuned mass damper (TMD) with different objective functions for high-rise building under earthquake motions considering soil–structure interaction (SSI). A study is conducted to search for the TMD that outperforms five objective functions (i.e., OF-1–OF-5) containing combinations of the structural responses and foundation responses. The main goal of the present study is to evaluate and compare the control performance of these five objective functions. The optimum parameters of TMD are obtained by particle swarm algorithm (PSA) to minimize the acceleration transfer function. To determine the dynamic response of a 40-story building under the influence of SSI, six different foundation soil conditions and eight different earthquake records are considered. The results show that the SSI effects on the dynamic response of the high-rise building resting on relatively soft soil types such as SD and SE are of critical importance. It is shown that the effectiveness of the optimum TMD designed by OF-1 is better than the others in suppressing the peak response values for all soil types. After OF-1, the best performances are obtained for OF-3 and OF-5 which yield approximately the same effectiveness. It is also found that different earthquake records, soil types and objective functions are very effective on the effectiveness of TMD. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.WOS:00075618540000
Two decades of InterDrought conferences: Are we bridging the genotype-to-phenotype gap?
No full textThis special issue comprises a number of papers presented during the fourth InterDrought conference in Perth, Australia from 2 to 6 September 2013, the last of a unique conference series that began in Montpellier in 1995 with a focus on how to leverage interdisciplinary research in order to understand better the adaptive responses of plants to drought and how to use this knowledge for enhancing crop productivity under drought-prone conditions. This editorial highlights the main contributions presented by a selected number of invited speakers and offers a glimpse at the efforts to narrow the genotype-to-phenotype gap towards the release of drought-resistant cultivars..
Sukuk Bond: The Global Islamic Financial Instrument
No full textGlobal financial markets are volatile right now and will remain so for the next 2-years. Equity markets are shaky. Investors risk appetite is suddenly moving to commodities. Bond market is precarious as Sovereign debt risk goes high. Global economy is slowly moving into recession which will be either U or W-Shaped. Recovery figures are questionable and are creating doubts among investors. So, where are we heading towards? As we navigate through treacherous times, Islamic financial market provides a new hope without speculation and exploitation of resources. The emergence of Sukuk Islamic Bond in the financial markets heralds a new era which can provide much needed financial stability and mitigation of risk in these arduous times. With advent of Sukuk in the financial world, the market players have got a new option to invest into this asset which hold considerable value and benefit for all. This bond promises to all investors an equitable return which is justifiable and above all safe for the strategic investment purpose.islamic Securitization, Islamic bonds, Structured Finance, Sukuk, Financial Engineering, Financial Innovation
Redox behaviour of model systems for spent nuclear fuel surfaces
No full textSafety assessments are the main pillars of the analysis of the impact of storage of the spent nuclear fuel. There are many scenarios to describe what might happen during the storage and disposal time of the nuclear waste. Even though the main composition of the spent nuclear is UO2, the matrix contains transuranium elements and fission products, which have different chemical behaviour and lead to an altered physical state after the irradiation. Thus, the complex nature of the spent nuclear fuels requires understanding of several mechanisms through investigation of individual parameters and their effect on one and another. This is achieved by single effect studies, starting from simple systems to gradually more complex systems. In this thesis, thin films have been used as model systems to simulate the spent fuel in a systematic manner. The main focus was given to the actinide (mixed) oxides (Th, U, Np, Pu, and Ce as surrogate for Pu and as fission product). Throughout this thesis, the suitability of the use of thin films instead of bulk material has been demonstrated, and the investigation of redox properties of model systems for spent fuels using different methods is described.RST/Reactor Physics and Nuclear Material
D departments on service quality and product innovation
No full textPurpose: The purpose of the article is to examine the concepts of knowledge management strategies, innovation and service quality in information technology companies that have research and development (R&D) departments in the technoparks of research universities. Design/methodology/approach: The research was carried out in information technology companies with R&D departments in the technoparks of universities. Due to the “innovation” focus of the research, 302 engineers were selected by random sampling from engineers working in information technology companies in technoparks, and the prepared scale was sent to them via e-mail. In total, 302 units of data were subjected to path analysis and mediation effect analysis using the SmartPLS program. Findings: In the research, it is supported by hypotheses that both knowledge management strategies and organizational innovation have a positive effect on the success of service quality and product innovation in information technology companies with R&D departments. At the same time, it can be explained as a result of analysis that innovation capability has both an independent and an intermediary variable effect. Research limitations/implications: Considering the limitations of the research, it is not correct to generalize the results of the analysis because the research was conducted only in information technology companies located in technoparks, and the data were collected from engineers working in these companies. For this reason, it is recommended that similar studies that are planned to be conducted in the future should do their research by taking this situation into account. At the same time, it is recommended to carry out future studies in different sectors and to bring the results obtained to the literature by comparing them. Practical implications: The importance of information is increasing in technology-oriented companies where competition is increasing. Companies that cannot go beyond imitation or offer similar products and/or services cannot compete with their competitors in a competitive environment. The fact that companies can be successful in a competitive environment is supported by hypotheses as a result of the analysis that they need to develop organizational innovation and knowledge, as well as develop innovation capability at the same time. Originality/value: The research is an original study in terms of examining the R&D departments of information technology companies operating in the technoparks of universities. Innovation and knowledge management strategies are examined within the scope of the research model by collecting data from information technology companies with R&D departments. © 2023, Emerald Publishing Limited
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