نتایج جستجو برای: knowledge mining techniques

تعداد نتایج: 1207915  

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this study examined the effect of prior knowledge and vocabulary teaching on iranian efl learners listening comprehension. the current study has two purposes: one is to investigate the effect of background knowledge on the second language listening comprehension of iranian intermediates and the other is to determine whether second language is facilitated by the introduction of unknown vocabularies in the form of prelistening activities. to conduct the study different instruments such as listening proficiency test and four listening tests such as pre and posttests were used and various statistical processes and techniques including paired-sample t-test, and analysis of variance (anova) were used. the findings of this study supported all three hypotheses tested. differences were found between the means of preteaching vocabulary variable, the background knowledge activation variable, and mean difference between these two strategies variable. subjects scored higher when the unknown words were taught in advance. likewise, subjects scored higher when they were asked some relevant questions about the topic than on those without them. there was, in addition, a significant difference between the means of preteaching vocabulary strategy and background knowledge activation strategy. in fact, preteaching vocabulary had a better effect in enhancing the students’ listening comprehension, in comparison to background knowledge activation strategy.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1390

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...

Journal: :International Journal for Research in Applied Science and Engineering Technology 2018

Journal: :ANNALS OF THE ORADEA UNIVERSITY. Fascicle of Management and Technological Engineering. 2010

Journal: :international journal of information science and management 0
prof. dr. m. e. mohammadpourzarandi central branch of azad university, tehran, iran r. tamimi north tehran branch of azad university, iran

nowadays, world wide web has become a popular medium to search information, business, trading and so on. various organizations and companies are also employing the web in order to introduce their products or services around the world. therefore e-commerce or electronic commerce is formed. e-commerce is any type of business or commercial transaction that involves the transfer of information acro...

Journal: :CoRR 2012
Tipawan Silwattananusarn Kulthida Tuamsuk

Data mining is one of the most important steps of the knowledge discovery in databases process and is considered as significant subfield in knowledge management. Research in data mining continues growing in business and in learning organization over coming decades. This review paper explores the applications of data mining techniques which have been developed to support knowledge management pro...

Journal: :journal of advances in computer research 0
samaneh ghasemi department of computer engineering, sari branch, islamic azad university, sari, iran zeinab ghorbani lakterashani department of computer engineering, sari branch, islamic azad university, sari, iran

process mining includes the automated discovery of petri nets from event logs. these event logs are the starting point for various discovery and analysis techniques of the process.  in this paper process model is developed using colored petri nets (cpns) and the supporting software package cpn tools. the restaurant process model is represented for the analysis using a combination of process min...

2011
N. Kannathasan

Data mining has emerged as one of the major research domain in the recent decades in order to extract implicit and useful knowledge. This knowledge can be comprehended by humans easily. Initially, this knowledge extraction was computed and evaluated manually using statistical techniques. Subsequently, semiautomated data mining techniques emerged because of the advancement in the technology. Suc...

Journal: :bulletin of emergency and trauma 0
elahe parva reza boostani zahra ghahramani bsc, trauma research center, shiraz university of medical sciences, shiraz, iran shahram paydar

clinical databases can be categorized as big data, include large quantities of information about patients and their medical conditions. analyzing the quantitative and qualitative clinical data in addition with discovering relationships among huge number of samples using data mining techniques could unveil hidden medical knowledge in terms of correlation and association of apparently independent...

One of the most important issues related to knowledge discovery is the field of comment mining. Opinion mining is a tool through which the opinions of people who comment about a specific issue can be evaluated in order to achieve some interesting results. This is a subset of data mining. Opinion mining can be improved using the data mining algorithms. One of the important parts of opinion minin...

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