although story mapping strategy has been shown to be beneficial in many reading comprehension classes, the benefits of this technique have not been thoroughly investigated in l2 writing research. the small number of previous studies (e.g., li, 2007; brunner, 2010) have found the potential benefits of using story mapping strategy on students’ writing performance, but they did not focus on differ...

|A new method for the reduction of peak{to{average transmit power ratio of multicarrier modulation systems, called selected mapping, is presented, which is appropriate for a wide range of applications. Signi cant gains can be achieved by selected mapping whereas complexity remains quite moderate.

Orthogonal frequency division multiplexing (OFDM) has become a promising method for many wireless communication applications. However, one main drawback of OFDM systems is the high peak-to-average power ratio (PAPR). Selected mapping (SLM) is a well-known technique to decrease the problem of high PAPR in OFDM systems. In this method, transmitter is obliged to send some bits named side informati...

This study has examined the effect of semantic mapping on learning vocabulary across genders. The researchers selected 120 intermediate students after the administration of a standard proficiency test. A vocabulary test was also used to measure the students’ vocabulary knowledge. The experimental group received semantic mapping in the pre-reading stage, butthe control group did not receive this...

OBJECTIVES The aim of this study was to develop and apply an instrument to map the level of health technology assessment (HTA) development at country level in selected countries. We examined middle-income countries (Argentina, Brazil, India, Indonesia, Malaysia, Mexico, and Russia) and countries well-known for their comprehensive HTA programs (Australia, Canada, and United Kingdom). METHODS A...

According to the demand of advance communication field there should be high data rate in addition to both power efficiency and lower bit error rate. This demand of high data rate can be fulfilled by the single carrier modulation with compromising the trade off between the power efficiency and bit error rate. Again in the presence of frequency selective fading environment, it is very difficult t...

Selected Mapping (SLM) is known to be a useful method to reduce the peak to average power ratio (PAPR) of OFDM transmit signals. In this paper, the performance of PAPRreduction for Unique Word (UW-) OFDM is investigated where in contrast to usual cyclic prefix (CP-) OFDM correlations between subcarrier data exist due to a complex number Reed-Solomon code along the subcarriers. It is shown that ...

One of the well – known Peak to Average Power Ratio (PAPR) mitigation technique for orthogonal frequency division multiplexing (OFDM) is Selected Mapping (SLM). Up till now, many different low complexity SLM schemes have been proposed, but most of them reduce the computational intricacy at the cost of Bit Error Rate (BER) or Peak to Average Power Ratio (PAPR) mitigation performance degradation....

Peak to average power ratio (PAPR) distribution of the periodic orthogonal frequency division multiplexing (OFDM) symbol sequences is evaluated and it is shown that the OFDM symbol sequence with short period is expected to have high PAPR. PAPR bound of two sequences with Hamming distance D is derived. Using these results, we identify two conditions for the optimal phase sequences of selected ma...

The peak to average power ratio (PAPR) distribution of orthogonal frequency division multiplexing (OFDM) symbol sequences is evaluated and it is shown that an OFDM symbol sequence with short period is expected to have high PAPR. The PAPR relationship of two input symbol sequences with Hamming distance D is also derived. Using these two results, we derive two conditions for the optimal phase seq...