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Search Results: 1 - 10 of 348 matches for " Elahe Tavakoli "
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The Effect of Font Size on Reading Comprehension Skills: Scanning for Key Words and Reading for General Idea
Elahe Tavakoli,Shiela Kheirzadeh
Theory and Practice in Language Studies , 2011, DOI: 10.4304/tpls.1.7.915-919
Abstract: The present study tries to investigate the effect of font size on recognition of the key textual words, to determine if the students can find the answers to some multiple choice and true/false questions easier in a text typed with a larger or smaller font size. Forty male and female students were selected through the placement test in an institute. Their reading comprehension ability with the focus on scanning for the key words and understanding general idea was measured using two reading texts with different font sizes (fonts 10 and 16) but the same level of difficulty estimated by Fog index of readability. To minimize the ordering effect, counter balanced test design was applied during the test administration. Pearson Product Correlation did not show a significant relationship between the scores of the two font sizes.
The Causes of Reading Difficulty: The Perception of Iranian EFL Post-graduate and Under-graduate Students
Shiela Kheirzadeh,Elahe Tavakoli
Journal of Language Teaching and Research , 2012, DOI: 10.4304/jltr.3.1.147-152
Abstract: This study investigates the causes of the reading difficulty as perceived by under-graduate and post-graduate EFL learners. 34 post-graduate and 36 under-graduate students at the University of Isfahan took part in this study. In particular, this study tries to know whether there is any difference between the perceptions of these two groups of learners. A questionnaire synthesized Eskey (1986), and Bernhardt (1991), cited in Lin (2002), was used as the main instrument for analysis of knowledge categories affecting reading comprehension. The questionnaire considered three general categories of linguistic, conceptual and socio-cultural knowledge as the building blocks of reading. It consists of four multiple-choice questions, all accepting multiple responses. The results of the frequency analysis showed that post-graduate students, with higher level of language proficiency, attached less importance to linguistic knowledge as the factor helping reading comprehension success, but most importance to socio-cultural and conceptual knowledge. With the decrease of linguistic knowledge; however, under-graduates attached better reading comprehension to linguistic knowledge rather than socio-linguistic and conceptual knowledge.
Investigating the Construct Validity of the FCE Reading Paper in Iranian EFL Context
Elahe Tavakoli,Hossein Barati
Journal of Language Teaching and Research , 2011, DOI: 10.4304/jltr.2.1.239-247
Abstract: Validity studies on language proficiency tests have attracted many researchers in the last decades. Most of such studies try to investigate skills assessed by the items in the tests, hence the construct validity of the test. The present study took the same approach and therefore aimed to investigate the construct validity of the reading paper of the First Certificate in English (FCE) in the Iranian EFL context. The research addressed the following three questions: (1) Do the majority of the Iranian EFL expert judges agree on the skills measured by the items in the FCE reading paper? (2) Do the majority of the Iranian EFL undergraduates come to agreement on the skills measured by the items in the FCE reading paper? (3) Does exploratory factor analysis support that the FCE reading paper assesses the same reading skills claimed by its developing board, i.e. UCLES, in the context of Iranian EFL undergraduates? The present study deployed triangulated approach in collecting and analyzing the data. It attempted to use both qualitative (i.e. experts’ and test takers’ judgment) and quantitative (i.e. Factor Analysis) approaches to address the above questions. The findings revealed that there was not a substantial agreement among expert judges on the skills claimed to be assessed by the items in the FCE reading paper nor could any significant agreement be observed amongst the test takers on the skills being measured by such items in the FCE reading paper. Finally, exploratory factor analysis revealed similar findings as those in the judgmental phase of the study. The individual items in the FCE reading paper did not confirm the claims by the test developers.
Hand-Made, Three-Dimensional Molecular Model for Active Inorganic Chemistry Learning  [PDF]
Elahe Keshavarz
Creative Education (CE) , 2018, DOI: 10.4236/ce.2018.97086
Abstract: The use of molecular model in education has demonstrated its importance due to its positive impact on the teaching and learning process. It is obvious that hand-made tools have considerable importance in science education. This?study suggests for employing three-dimensional molecular model in teaching and appraising chemistry skills and knowledge in high schools and universities. This paper presents three molecular models for unit cells of cubic system.
Do Iranian and Canadian Females Make Different Personal Decisions?  [PDF]
Mahin Tavakoli
Sociology Mind (SM) , 2012, DOI: 10.4236/sm.2012.21016
Abstract: This study examined cultural differences and similarities in the number and types of personal decisions made by Iranian and Canadian females. Canadians made more decisions than did Iranians, indicating that Canadians are more autonomous and independent than are Iranians. The types of decisions made more by Canadians than by Iranians illustrate that, when making decisions, Canadians use primary control (trying to change their situation) more than Iranians do, while Iranians use secondary control (trying to adjust to the situation) more than Canadians do. The results support theories of cultural differences locating Canada and Iran at opposite ends of individualism-collectivism continuum, and are consistent with the individualistic-collectivist distinctions made by Heine (2008), Savani, Markus, and Conner (2008), and Triandis (2004).
Chaotic features analysis of EEG signals during hallucination tasks of waterloo-stanford standard  [PDF]
Elahe' Yargholi, Ali Motie Nasrabadi
Journal of Biomedical Science and Engineering (JBiSE) , 2010, DOI: 10.4236/jbise.2010.312153
Abstract: The present study looks carefully at EEG (Electroen-cephalograph) signals of people after the hypnosis inductions. Subjects were in three different categories of hypnotizability based on Waterloo-Stanford crite-ria; low, medium and high. Signals recorded during hallucination tasks of Waterloo-Stanford standard were applied to study the underlying dynamics of tasks and investigate the influence of hypnosis depth and concentration on recorded signals. To fulfill this objective, chaotic methods were employed; Higuchi dimension and correlation dimension. The results of the study indicate channels whose chaotic features are significantly different among people with various levels of hypnotizability. Moreover, a great consis-tency exists among channels involved in each task with brain's dominant hemisphere and brain lobes' functions. Another considerable result of the study was that the medium hypnotizable subjects were mostly affected by inductions and instructions of the hypnotizer (more than low or high hypnotizable sub-jects). The present study demonstrates a remarkable innovation in the analysis of hypnotic EEG; investi-gating the EEG signals of the hypnotized as doing hallucination tasks of Waterloo-Stanford standard orders.
Tectonic Geomorphology of Atrak River, NE Iran  [PDF]
Elahe Javadi Mosavi, Mehran Arian
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.53010
Abstract: Atrak River region, northeast Iran is a quaternary tectonically active region. There are many geologic structures that they are formed by the collision of the Arabian and Eurasian plates. This area has extended from north east Iran to the of kope dagh zone. The study area is Atrak river basin and it has been divided to 56 Sub-basin for calculation of 6 geomorphic indices. Finally, this region was classified in 4 relative tectonic activity classes.
Cell Phones are Not Our Friend’s
Elahe Nooshinfar
Journal of Paramedical Sciences , 2012,
Abstract: Nowadays, when taking into consideration the automotive manner of our lifestyles, human beings are constantly in danger of over exposure to electromagnetic fields especially arising from electronic devices such as laptops, PC’s and cell phones. Therefore, it is essential that we are educated on the affect of these electromagnetic fields on our cells and tissues which are present in the devices and equipment which we utilize daily. Based on numerous research conducted the negative effect of such devices is unbelievably eye-catching and causes dire abnormalities on the normal function of human beings.With consideration of the high usage of the electromagnetic waves such as: Mechanical cables and wires which transport energy The constant use of electronic and communication devices such as PC’s, laptops and cell phones should be considered of high risk for the health of human beings.
Radar Signal Recognition by CWD Picture Features  [PDF]
Erfan Tahbaz Tavakoli, Abolfazl Falahati
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2012, DOI: 10.4236/ijcns.2012.54031
Abstract: In this paper a system for automatic recognition of radar waveform is introduced. This technique is used in many spectrum management, surveillance, and cognitive radio and radar applications. For instance the transmitted radar signal is coded into six codes based on pulse compression waveform such as linear frequency modulation (LFM), Frank code, P1, P2, P3 and P4 codes, the latter four are poly phase codes. The classification system is based on drawing Choi Willliams Distribution (CWD) picture and extracting features from it. In this study, various new types of features are extracted from CWD picture and then a pattern recognition method is used to recognize the spectrum. In fact, signals from CWD picture are defined using biometric techniques. We also employ false reject rate (FRR) and false accept rate (FAR) which are two types of fault measurement criteria that are deploy in biometric papers. Fairly good results are obtained for recognition of Signal to Noise Ratio (-11 dB).
The Influence of Tetranychus urticae Koch (Acari: Tetranychidae) Life Table and Reproductive Parameters by Applying Si on Bean at Library Condition  [PDF]
Elahe Sadeghi, Reza Vafaei Shoushtari, Hamid Madani
Advances in Entomology (AE) , 2016, DOI: 10.4236/ae.2016.45027
Abstract: Two-spotted spider mite, Tetranychus urticae Koch, is one of the important pests of bean, which can cause severe damages on it. Silicon is one of the micronutrient elements, as its spray on the leaves can decrease the population of the pest. In this research, the impact of four different doses of Si (0, 1, 1/5, 2 ppm) was investigated on biological and population growth parameters of T. urticae. The experiments were carried out in Petri dishes in an incubator at 25°C ± 2°C, 65% ± 5% RH and 16 L: 8 D. The duration of developmental stage was significantly affected by Si dose. The longest immature period, the shortest longevity of females and the shortest oviposition period were obtained at 2 ppm. In addition, Si dose significantly affected population growth parameters of the mite. The intrinsic rate of natural increase (rm) of the mite ranged from 0.246 to 0.215 day which lowest and the highest values were at 2 ppm and control plants, respectively. The lowest net reproductive rate (R0) and finite rate of increase (λ) of the mite and the highest value of mean generation time (T) and doubling time (DT) were estimated at 2 ppm. The results of this peruse represented that 2 ppm had better potential for decreasing the population of the two-spotted spider mite, and it can be used in the mite integrated pest management programs.
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