排序方式： 共有117条查询结果，搜索用时 31 毫秒
61.
Mustafa K. Gurcan Dhineth Weliwitegoda Girish Chandra 《Journal of The Franklin Institute》2012,349(1):234-259
Intersymbol interference (ISI) degrades the bit error rate (BER) performance of sequential detectors such as maximum likelihood sequence detection (MLSD) and the maximum a posteriori (MAP) algorithm due to minimum distance reduction. This paper describes a novel rotation method that can increase the minimum distance and results in significant improvement in the BER performance for binary PSK and 4QAM systems when operating over severe ISI channels. Simulation results show that this method can improve the BER performance of systems employing MLSD and MAP turbo equalization by up to 4.6 dB compared to existing approaches including known precoding schemes. 相似文献
62.
Iris Güldenpenning Mustafa Alhaj Ahmad Alaboud Wilfried Kunde Matthias Weigelt 《Sportwissenschaft》2018,48(3):366-375
In basketball, the defender’s reaction to a pass is slower and more error prone if the attacking player gazes into the opposite direction. This so-called head-fake effect might be modulated by context information, that is, the frequency and the sequence of head fakes occurring. Accordingly, the present study investigates the head-fake effect for different frequency proportions (20% vs. 50% vs. 80%). The results show that the head-fake effect decreases when the head fake occurs more often. Furthermore, a potential influence of previous fake experience (i.e., congruency-sequence effect) on the size of the head-fake effect was investigated. Importantly, previous fake experience did not cause the frequency-based modulation of the general size of the head-fake effect. These findings bare important implications for sports practice, especially when it comes to instructing players about the tactical use of deceptive actions. 相似文献
63.
In this paper, the numerical solution of differential-algebraic equations is considered by Padé approximation method. We applied this method to an example which is a physical model problem. Firstly the physical model problem has been converted to power series, then the numerical solution of physical model problem was put into Padé series form. Thus we obtained numerical solution of physical model problem. 相似文献
64.
Mustafa Serdar Köksal 《Journal of Science Teacher Education》2011,22(7):661-677
The degree to which pre-service teachers learn biology is related to both motivational factors of self-regulation and factors
regarding epistemological beliefs. At the same time, self-regulation and epistemological beliefs are also associated with
one another. Based on this relationship, the purpose of this study was to investigate the relationship between components
of epistemological beliefs and self-refulation (self-efficacy and test-anxiety) on learning biology. The study was conducted
with 411 pre-service elementary and pre-service elementary science teachers by using a predictive research approach. Collected
data was analyzed by the multiple linear regression technique. The results showed that only the belief about “existence of
one truth” was a significant predictor of test anxiety while there was no epistemological predictor of self-efficacy. Conclusions
and implications of the study will be discussed. 相似文献
65.
66.
Köse Mustafa Koçyiğit Mehmet Erdem Cahit Jega Idris Mohammed 《Education and Information Technologies》2021,26(4):4307-4328
Education and Information Technologies - This study aims to evaluate current locations of preschool education institutions and suggest alternative spatial arrangements in the Afyonkarahisar... 相似文献
67.
Mustafa Ulusoy 《Teaching in Higher Education》2016,21(5):532-544
This study aimed to evaluate the Pre-service Teachers’ (PSTs’) field experience-related perceptions and the qualities of their written reflections. Two thousand four hundred journal entries written by 75 teacher candidates were analyzed to classify their qualities. In addition, semi-structured interviews were conducted with all of the subjects. The results showed that the largest proportion of the written entries was classified as technical. Only a small percentage of the subjects reached the highest level of reflection called as transformative. During the field experiences, the PSTs had mainly self, cooperating teachers, and student-related issues and perceptions. At the end of the field experiences, they recommended to start the practicum courses from the first year of the faculty and to increase the weekly hours of these courses. It is important to note that the PSTs need additional knowledge and practices about the reflection, reflective writing, and the qualities of reflection. 相似文献
68.
Mustafa Alhaj Ahmad Alaboud Iris Güldenpenning Yvonne Steggemann-Weinrich Wilfried Kunde Matthias Weigelt 《Sportwissenschaft》2016,46(3):223-231
Experimental studies on the head fake in basketball showed that participant’s responses in a pass direction identification task were delayed for incongruent compared to congruent directions of the players gaze and pass (so-called head fake effect). In these studies on the head fake effect, static pictures were presented and responses on the pass direction were given with a simple key press. The present study examines whether an increase in the response complexity affects the head fake effect and whether it can also be transferred to the presentation of dynamic stimuli. In experiment 1, participants were presented with static pictures of a basketball player who passes a ball to the left or to the right. The player’s gaze direction was either oriented in the direction of the intended pass or in the opposite direction (i.?e., a head fake). The participants were asked to respond as quickly as possible to the pass direction and to ignore the gaze direction. Participants gave responses by pressing a key (simple response) or by executing a quasirealistic defense movement (complex response). Response complexity was blocked. In experiment 2, videos replaced the static stimuli. The responses were only given with the complex, full body movement. Results show that the head fake effect is independent of response complexity and that it can also be found when presenting dynamic stimuli. 相似文献
69.
Rozilah Katan Siti Ezaleila Mustafa Hamedi M. Adnan 《Publishing Research Quarterly》2018,34(3):362-377
Advancements in digital technology are making waves in the publishing industry and e-publishing is starting to make its mark in the market. Although publishers view e-publishing as an opportunity to exploit products and new distribution channels, some of them are seeing this development as a risk rather than an opportunity, and thus are not willing to participate in these changes. This study was conducted to determine the readiness of e-publishing among Malaysian book publishers based on the E-Publishing Readiness Assessment Model. The results found that publishers in Malaysia are prepared in terms of infrastructure and human resources. However, only a small percentage of them are willing to practice e-publishing by publishing at least one e-book, while the majority is taking a wait and see approach before they start issuing e-books. Interviews with two companies displaying high levels of e-readiness and low e-readiness, showed a willingness depend on the decision of the company’s top management. In addition, external factors such as market demand, technological pressure, competition, consumer habits and police and government policies also affect the results of the top management to run e-publishing in their respective companies. Through these findings, the government and agencies involved in the publishing industry may be able to help find a solution when designing a strategy for improving e-publishing practices in Malaysia. 相似文献
70.
Sırakaya Mustafa Alsancak Sırakaya Didem Korkmaz Özgen 《Journal of Science Education and Technology》2020,29(4):561-572
Journal of Science Education and Technology - This study aimed to investigate the relationships among computational thinking (CT) skills, science, technology, engineering and mathematics (STEM)... 相似文献