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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Teaching English Language
- نوع مقاله: Journal Article
- کلمات کلیدی: Nonfiniteness,Null Operator Structures,Empty Category,Optionality,Persian L2 Learners
- چکیده:
- چکیده انگلیسی: The study investigated the acquisition of empty categories in the English complex infinitival structures. A quasi-experimental design was used in which four groups of Persian learners of English (elementary, lower intermediate, upper intermediate and advanced) via convenient sampling were selected and assigned into different proficiency levels using Oxford Quick Placement Test. Then, the groups were given three tasks, a translation task, a picture-cued sentence completion task, and an error-correction task to see whether they learn the feature of nonfiniteness which is absent in Persian and if so, at what level Persian speakers learn English null categories. The study specifically tries to find whether optionality in the use of clitics in null operator structures appear in developing English interlanguage of Persian second language learners. As the findings of the study revealed, it seems that, after a short period of L1 transfer, Persian learners of English learn nonfiniteness quite rapidly while clitic optionality in null operator structures is observed in their performance , however, as their level increases, the this optionality in the use of pronominal clitics fades away.
- انتشار مقاله: 14-11-1397
- نویسندگان: Vahid Mahmoudi-Gahroue,Manijeh Youhanaee,Dariush Nejadansari
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Finance
- نوع مقاله: Journal Article
- کلمات کلیدی: Efficiency,Stochastic Frontier Production Function,Trans log Production Function
- چکیده:
- چکیده انگلیسی: One of the most important effective elements in economic growth is the efficiency of manufacturing units. Therefore, measuring the efficiency of firms is necessary in order to increase efficiency in future planning courses. In the current research, using Stochastic Frontier Production Function, the efficiency of firms in Tehran Stock Exchange has been measured. In the above method, the efficient frontier is determined by using the Trans log production function, and the efficiency of each firm measured by the efficient frontier. The most important superiority of Stochastic Frontier Production Function is to specify the role of random and environmental elements (out of firm authorities) and inter-organizational elements (in-firm authorities) to assess the inefficiency of firms as compared to other methods. Thus, 105 firms were selected using maximum likelihood method in 2008-2017 to evaluate the research model. Results indicated that the minerals industry and cement industry with the averages of 53% and 90% had the least and most efficiency values, respectively. Separating the inefficiency values showed that the food industry and chemicals industry had the least and most inefficiency resulting from the firm authorities as 33.6% and 95.2%, respectively. According to research results, financial analysts and investors are recommended to rank the efficiency and assess the performance based on the firm authorities. Due to the importance of efficiency measurement in operational auditing, the auditors are recommended to use the current research model to assess the firm’s efficiency. Also, Organization of Industries and Mines is suggested to tackle the obstacles after identifying the elements out of firm authorities which affect the inefficiency in the firms.
- انتشار مقاله: 18-08-1398
- نویسندگان: Vahid Mahmoudi,Mohammad Hossein Ghaemi,Hossein Kazemi
- مشاهده
- جایگاه : پژوهشی
- مجله: Advances in Mathematical Finance and Application
- نوع مقاله: Journal Article
- کلمات کلیدی: Economics to scale,Nonlinear behavior of costs,Production function
- چکیده:
- چکیده انگلیسی: One of the most important effective factors in the economic growth is the increased efficiency of manufacturing sectors. Thus, it is necessary to review and measure the efficiency of business units from a variety of dimensions to plan the increase of efficiency in future courses. One of these dimensions is the economics to scale (ES) referring to the concept of enhanced earnings due to the increased manufacturing unit, which may be of an increasing, fixed or decreasing trend. ES can be measured through economic production functions. This paper has applied Translog production function to measure corporates' ES. Therefore, data of 105 manufacturing corporates have been collected during 2008-2017. With regard to linearity between independent variables, the elastic net regression method has been used. Results indicate that some industries are of increasing economics to scale trend and some have a decreasing ES. Results can be applied in order to plan and determine the appropriate production level in the management accounting of corporates.
- انتشار مقاله: 19-03-1398
- نویسندگان: Vahid Mahmoudi,Mohammad Hossein Ghaemi,Hossein Kazemi
- مشاهده