80 research outputs found

    The influence of translation on Shakespeare's reception in Iran: three Farsi Hamlets and suggestions for a fourth.

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    The study consists of three parts. Part 1 defines the development of translation in Iran over almost fifteen centuries -from the reign of King Anowshiravan (53 1-79), who commissioned the first translation ever made from Sanskrit into Middle Persian (Pahlavi) to the year 2000. This part traces Iran's eventful history from the Arab invasion and the establishment of the Caliphate (642), through the Moghul takeover and the fall of the Caliphate (1258), to the founding of Dar al-fonoon (1852) and the rise of translation to significance, onto W.W. II and the state-wide replacement of French by English as the most important foreign language, resulting in a reinvigoration of translational activities, and finally to the Islamic Revolution (1979) and the end of the twentieth century. Part 2 looks into Shakespeare'sr eception in Iran. Given Shakespeare's profound influence in literary and theatrical activities across the world, the attention he has received in Iran is not commensurate with his high global standing. This part endeavours to find out the circumstances of this comparative neglect The linguistic, prosodic and cultural problems that typically an Iranian translator of Shakespeare may encounter are immense. The French and English in the nineteenth and twentieth centuries, never enjoyed anything other than the status of foreign languages, learnt or taught as auxiliaries. Therefore, bilingualism in whose lap scholarly proficiency can be born and bred, has never existed in modern Iran. Individual bilingual scholars who may have attained their proficiency through a painstaking pursuit of knowledge at home or abroad, have either been too few or too involved in other activities to make a strong impact on translation. Thus it might be that shortcomings in some of the translations of Shakespeare may be responsible for his reserved reception in Iran. The inclusion in Part 2 of a few glimpses of Shakespeare's global significance are felt to provide a useful contrast. Part 3 is the main course of the study. It examines Farzad and Behazin's translations both made for the page, as well as Rahimi's adaptation for the stage. Rahimi's Hamlet has been subjected to an appropriation aimed at making it culturally innocuous. It has one act and twenty-one scenes, with a lot of deletions and occasional additions. Each scene has been properly examined and the appropriations made for cultural considerations have been specified. The research concludes with brief remarks on the major findings of the study

    A Novel Cost Based Model for Energy Consumption in Cloud Computing

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    Cloud data centers consume enormous amounts of electrical energy. To support green cloud computing, providers also need to minimize cloud infrastructure energy consumption while conducting the QoS. In this study, for cloud environments an energy consumption model is proposed for time-shared policy in virtualization layer. The cost and energy usage of time-shared policy were modeled in the CloudSim simulator based upon the results obtained from the real system and then proposed model was evaluated by different scenarios. In the proposed model, the cache interference costs were considered. These costs were based upon the size of data. The proposed model was implemented in the CloudSim simulator and the related simulation results indicate that the energy consumption may be considerable and that it can vary with different parameters such as the quantum parameter, data size, and the number of VMs on a host. Measured results validate the model and demonstrate that there is a tradeoff between energy consumption and QoS in the cloud environment. Also, measured results validate the model and demonstrate that there is a tradeoff between energy consumption and QoS in the cloud environment

    A Novel Cost Based Model for Energy Consumption in Cloud Computing

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    Cloud data centers consume enormous amounts of electrical energy. To support green cloud computing, providers also need to minimize cloud infrastructure energy consumption while conducting the QoS. In this study, for cloud environments an energy consumption model is proposed for time-shared policy in virtualization layer. The cost and energy usage of time-shared policy were modeled in the CloudSim simulator based upon the results obtained from the real system and then proposed model was evaluated by different scenarios. In the proposed model, the cache interference costs were considered. These costs were based upon the size of data. The proposed model was implemented in the CloudSim simulator and the related simulation results indicate that the energy consumption may be considerable and that it can vary with different parameters such as the quantum parameter, data size, and the number of VMs on a host. Measured results validate the model and demonstrate that there is a tradeoff between energy consumption and QoS in the cloud environment. Also, measured results validate the model and demonstrate that there is a tradeoff between energy consumption and QoS in the cloud environment

    Practical Implementation of Attitude-Control Algorithms for an Underactuated Satellite

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    The challenging problem of controlling the attitude of satellites subject to actuator failures has been the subject of increased attention in recent years. The problem of controlling the attitude of a satellite on all three axes with two reaction wheels is addressed in this paper. This system is controllable in a zero-momentum mode. Three-axis attitude stability is proven by imposing a singular quaternion feedback law to the angular velocity trajectories.Two approaches are proposed and compared to achieve three-axis control: The first one does not require angular velocity measurements and is based on the assumption of a perfect zero momentum, while the second approach consists of tracking the desired angular velocity trajectories. The full-state feedback is a nonlinear singular controller. In-orbit tests of the first approach provide an unprecedented practical proof of three-axis stability with two control torques. The angular velocity tracking approach is shown to be less efficient using the nonlinear singular controller. However, when inverse optimization theory is applied to enhance the nonlinear singular controller, the angular velocity tracking approach is shown to be the most efficient. The resulting switched inverse optimal controller allows for a significant enhancement of settling time, for a prescribed level of the integrated torque

    Towards virtual machine energy-aware cost prediction in clouds

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    Pricing mechanisms employed by different service providers significantly influence the role of cloud computing within the IT industry. With the increasing cost of electricity, Cloud providers consider power consumption as one of the major cost factors to be maintained within their infrastructures. Consequently, modelling a new pricing mechanism that allow Cloud providers to determine the potential cost of resource usage and power consumption has attracted the attention of many researchers. Furthermore, predicting the future cost of Cloud services can help the service providers to offer the suitable services to the customers that meet their requirements. This paper introduces an Energy-Aware Cost Prediction Framework to estimate the total cost of Virtual Machines (VMs) by considering the resource usage and power consumption. The VMs’ workload is firstly predicted based on an Autoregressive Integrated Moving Average (ARIMA) model. The power consumption is then predicted using regression models. The comparison between the predicted and actual results obtained in a real Cloud testbed shows that this framework is capable of predicting the workload, power consumption and total cost for different VMs with good prediction accuracy, e.g. with 0.06 absolute percentage error for the predicted total cost of the VM

    An Efficient and Robust Sizing Method for eVTOL Aircraft Configurations in Conceptual Design

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    This paper presents the development of a robust sizing method to efficiently estimate and compare key performance parameters in the conceptual design stage for the two main classes of fully electric vertical take-off and landing (eVTOL) aircraft, the powered lift and wingless aircraft types. The paper investigates hybrids of classical root-finding methods: the bisection, fixed-point and Newton-Rapson methods for use in eVTOL aircraft sizing. The improved convergence efficiency of the hybrid methods is at least 70% faster than the standard methods. This improved efficiency is significant for complex sizing problems. The developed sizing method is used to investigate the comparative performance of the wingless and powered lift eVTOL aircraft types for varying mission lengths. For a generic air taxi mission with a payload of 400 kg, the powered lift type demonstrates its mass efficiency when sized for missions above 10 km in range. However, the simpler architecture of the wingless eVTOL aircraft type makes it preferable for missions below 10 km in range when considering energy efficiency. The results of the sizing study were compared against a selection of eVTOL aircraft data. The results showed a good agreement between the estimated aircraft mass using the proposed sizing method and published eVTOL aircraft data

    Techno-economic analysis of production of octane booster components derived from lignin

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    In this study, a comprehensive process for production of an environmentally friendly octane booster (acetophenone) from lignin is presented, along with a detailed techno-economic analysis. Recognizing that much of the prior research on octane boosters has been confined to experimental lab-level investigations, this study develops comprehensive process design to unravel the intricacies of large-scale acetophenone production. The acetophenone production process involves catalytic hydrogenolysis, which also yields phenol as a valuable side product. Based on the process flow diagram, mass and energy balances were developed, revealing significantly improved yields and purity of acetophenone compared to industry standards, reaching 0.74 kg acetophenone per kg of lignin and 99 wt%. In the techno-economic analysis, calculations involving fixed capital investment (FCI), operating costs, and working capital were conducted based on a feed of 100 kg/h of dry lignin. The results indicate FCI at 2.72 million USD, operating costs at 1.09 million USD per year, and working capital at 0.57 million USD. Assuming a 20-year operational lifespan, the payback period is estimated at 6.09 years, as depicted by the cumulative cash flow diagram. Moreover, techno-economic analysis demonstrates a net present value (NPV) of 3.24 million USD at a 10% discount rate, an internal rate of return (IRR) of 22.73%, and a return on investment (ROI) of 34.39%. These positive outcomes underscore the robust profitability of the proposed acetophenone production plant derived from lignin. Additionally, a sensitivity analysis on the IRR indicates that increasing the production capacity could further enhance profitability, reaffirming the feasibility of the plant’s operation. Crucially, this study highlights the potential for sustainable and economically viable production of acetophenone, offering an environmentally friendly alternative to toxic octane boosters and advancing the development of sustainable fuel additives. Graphical Abstract: [Figure not available: see fulltext.

    Dynamic replication strategies in data grid systems: A survey

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    In data grid systems, data replication aims to increase availability, fault tolerance, load balancing and scalability while reducing bandwidth consumption, and job execution time. Several classification schemes for data replication were proposed in the literature, (i) static vs. dynamic, (ii) centralized vs. decentralized, (iii) push vs. pull, and (iv) objective function based. Dynamic data replication is a form of data replication that is performed with respect to the changing conditions of the grid environment. In this paper, we present a survey of recent dynamic data replication strategies. We study and classify these strategies by taking the target data grid architecture as the sole classifier. We discuss the key points of the studied strategies and provide feature comparison of them according to important metrics. Furthermore, the impact of data grid architecture on dynamic replication performance is investigated in a simulation study. Finally, some important issues and open research problems in the area are pointed out

    Comparison of Salivary Secretory IgA in Caries-free Children and Children with Severe Early Childhood Caries

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    Abstract: Background & Aims: Sever early childhood caries (SECC) is a multifactor common disease that unfortunately there have been a lot of unknown points about it. This study was performed to compare the levels of total S-IgA in children with and without SECC. Methods: In this cross-sectional study 44 children aged 6-24 months were divided into two groups of with SECC (n=20) and without SECC (n=24). The two groups were compared for the concentration of S-IgA assessed with Nephlometric method. The obtained data were analyzed by using t-test and through SPSS 15 software. Results: Mean saliva concentration of S-IgA in children with SECC (18.30 mg/dl) was higher than that in children without SECC (9.46 mg/dl) and this difference was statistically Significant (P<0.05). Conclusion: According to this study, the hypothesis of lower levels of S-IgA in children with SECC might be rejected. Keywords: Immunoglobulins, Saliva, Dental caries » XM
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