نتایج جستجو برای: self heading

تعداد نتایج: 533047  

1979
Michael Lebowitz

A newspaper story about terrorism, war, politics or football is not likely to be read in the same way as a gothic novel, college catalog or physics textbook. Similarly, tne process used to understand a casual conversation is unlikely to be the same as the process of understanding a biology lecture or TV situation comedy. One of the primary differences amongst these various types of comprehensio...

Journal: :British journal of sports medicine 2005
N Shewchenko C Withnall M Keown R Gittens J Dvorak

OBJECTIVES Controversy surrounding the long term effects of repeated impacts from heading has raised awareness among the public and the medical community. However, there is little information about the human response to the impacts and what measures can be taken to alter their effect. The objective of the current study was to gain a better understanding of heading biomechanics through the imple...

Journal: :Plant & cell physiology 2002
Shoko Kojima Yuji Takahashi Yasushi Kobayashi Lisa Monna Takuji Sasaki Takashi Araki Masahiro Yano

Heading date 3a (Hd3a) has been detected as a heading-date-related quantitative trait locus in a cross between rice cultivars Nipponbare and Kasalath. A previous study revealed that the Kasalath allele of Hd3a promotes heading under short-day (SD) conditions. High-resolution linkage mapping located the Hd3a locus in a approximately 20-kb genomic region. In this region, we found a candidate gene...

Journal: :archives of trauma research 0
meghdad teymouri department of physical education, shahrood branch, islamic azad university, shahrood, ir iran; department of physical education, shahrood branch, islamic azad university, shahrood, ir iran.tel: +98-9124731994, fax: +98-2733373650سازمان اصلی تایید شده: دانشگاه آزاد اسلامی شهرکرد (islamic azad university of shahrekord) heydar sadeghi department of physical education and sport sciences, tarbiat moallem university, tehran, ir iran amir nabaei department of electrical engineering, shahrood university of technology, shahrood, ir iranسازمان اصلی تایید شده: دانشگاه صنعتی شاهرود (shahrood university of technology) amir kasaeian department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, ir iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

conclusions the study revealed the significance of anthropometric variables related to heading, such as age and head perimeter. therefore, it was concluded that these variables should be considered when teaching and practicing the heading technique with players of different ages and anthropometric sizes. results significant correlations existed between the force exerted on the head during headi...

Journal: :Psychonomic bulletin & review 2000
J E Cutting P M Alliprandini R F Wang

A study of eye movements during simulated travel toward a grove of four stationary trees revealed that observers looked most at pairs of trees that converged or decelerated apart. Such pairs specify that one's direction of travel, called heading, is to the outside of the near member of the pair. Observers looked at these trees more than those that accelerated apart; such pairs do not offer trus...

Journal: :Journal of neurophysiology 2015
William K Page Nobuya Sato Michael T Froehler William Vaughn Charles J Duffy

Navigation relies on the neural processing of sensory cues about observer self-movement and spatial location. Neurons in macaque dorsal medial superior temporal cortex (MSTd) respond to visual and vestibular self-movement cues, potentially contributing to navigation and orientation. We moved monkeys on circular paths around a room while recording the activity of MSTd neurons. MSTd neurons show ...

2016
Min Huang Ruichun Zhang Peng Jiang Xiaobing Xie Xuefeng Zhou Fangbo Cao Yingbin Zou

Warm temperature during post-heading is generally hypothesized to be the critical factor limiting grain yield of early-rice in South China. However, there is no direct evidence to confirm this hypothesis in the field. This study was conducted to determine the temperature-related yield constraints of early-rice in South China. Field experiments were carried out in Huaiji (a location in South Chi...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی مشهد - دانشکده دندانپزشکی 1390

objective: the objective of this study was to investigate the invitro fluoride release of four new self-adhesive resin cements; set (sdi, australia), breeze (pentron, usa), embrace wetbond (pulpdent, usa), g-cem (gc, japan) and to assess the bonding performance of these self-adhesive resin cements for bonding of orthodontic brackets. materials and methods: for fluoride release experiment, six ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2013
Xiaodong Chen Gregory C DeAngelis Dora E Angelaki

Reference frames are important for understanding sensory processing in the cortex. Previous work showed that vestibular heading signals in the ventral intraparietal area (VIP) are represented in body-centered coordinates. In contrast, vestibular heading tuning in the medial superior temporal area (MSTd) is approximately head centered. We considered the hypothesis that visual heading signals (fr...

2014
Li Kang Lingyun Ye Kaichen Song Yang Zhou

This paper proposes a low cost and small size attitude and heading reference system based on MEMS inertial sensors. A dual-axis rotation structure with a proper rotary scheme according to the design principles is applied in the system to compensate for the attitude and heading drift caused by the large gyroscope biases. An optimization algorithm is applied to compensate for the installation ang...

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