نتایج جستجو برای: adaptation rate

تعداد نتایج: 1092324  

Journal: :iranian red crescent medical journal 0
ardashir afrasiabifar department of nursing, yasuj university of medical sciences, yasuj, ir iran; corresponding author: ardashir afrasiabifar, department of nursing, yasuj university of medical sciences, yasuj, ir iran. tel: +98-7412234115, fax: +98-7412234115, e-mail:. zohreh karimi department of nursing, ahvaz jundishapur university of medical sciences, ahvaz, ir iran parkhideh hassani department of nursing, shahid beheshti university of medical sciences, tehran, ir iran

background in addition to physical adaptation and psychosocial adjustment to chronic renal disease, hemodialysis (hd) patients must also adapt to dialysis therapy plan. objectives the aim of the present study was to examine the effect of roy’s adaptation model-based patient education on adaptation of hd patients. patients and methods this study is a semi-experimental research that was conducted...

2007
Yuanzhu Peter Chen Jian Zhang Anne N. Ngugi

Data rate selection for IEEE 802.11-based wireless networks is not specified in the Specification. The problem of determining an appropriate data rate for the sender to send DATA frames and to adapt to changing channel conditions is referred to as rate adaptation. We propose DRA (differential rate adaptation), a rate adaptation scheme for IEEE 802.11 networks. It enables a high network throughp...

1996
Tae-Young Yang Won-Ho Shin Weon-Goo Kim Dae Hee Youn

This paper describes a codebook adaptation process improving the performance of speaker adaptation. The proposed method is performed prior to Bayesian speaker adaptation method using the formant distribution of adaptation data. The reference codebook is adapted to represent the formant distribution of a new speaker. The average recognition rate of Bayesian adaptation is improved from 91.4% to 9...

Journal: :Proceedings. Biological sciences 2014
Yoav Ram Lilach Hadany

Because mutations are mostly deleterious, mutation rates should be reduced by natural selection. However, mutations also provide the raw material for adaptation. Therefore, evolutionary theory suggests that the mutation rate must balance between adaptability-the ability to adapt-and adaptedness-the ability to remain adapted. We model an asexual population crossing a fitness valley and analyse t...

Journal: :زیست شناسی جانوری تجربی 0
محمود نفیسی بهابادی دانشیار گروه شیلات دانشکده کشاورزی و منابع طبیعی دانشگاه خلیج فارس، بوشهر وحید مرشدی پژوهشکده خلیج فارس، دانشگاه خلیج فارس، بوشهر

abstarct at the present study effects of salinity were studied on growth and feeding performance, survival rate and blood biochemical parameters of pre on-growing rainbow trout (oncorhynchus mykiss) with initial weight 93.22±4.11 g for 60 days. after adaptation for 10 days to water salinity, 450 fish were distributed in 5 treatments and 3 replicates according to completely randomized design. be...

2004
Langzhou Chen Lori Lamel Jean-Luc Gauvain Gilles Adda

This paper describes some recent experiments on unsupervised language model adaptation for transcription of broadcast news data. In previous work, a framework for automatically selecting adaptation data using information retrieval techniques was proposed. This work extends the method and presents experimental results with unsupervised language model adaptation. Three primary aspects are conside...

2012
Bo Wen Grace I. Wang Isabel Dean Bertrand Delgutte

Time course of dynamic range adaptation in the auditory nerve 1 Bo Wen, Grace I. Wang, Isabel Dean, and Bertrand Delgutte 2 Eaton-Peabody Laboratories, Massachusetts Eye and Ear Infirmary, Boston, MA 02114, Department of Otology and 3 Laryngology, Harvard Medical School, Boston, MA 02115, Department of Electrical Engineering and Computer 4 Science and Research Laboratory of Electronics, MIT, Ca...

Journal: :Journal of neurophysiology 1998
M R Ibbotson C W Clifford R F Mark

Extracellular recordings of action potentials were made from directional neurons in the nucleus of the optic tract (NOT) of the wallaby, Macropus eugenii, while stimulating with moving sine-wave gratings. When a grating was moved at a constant velocity in the preferred direction through a neuron's receptive field, the firing rate increased rapidly and then declined exponentially until reaching ...

1998
Mohamed-Slim Alouini Andrea Goldsmith

We rst study the capacity of Nakagami multipath fading (NMF) channels with an average power constraint for three power and rate adaptation policies. We obtain closed-form solutions for NMF channel capacity for each power and rate adaptation strategy. Results show that rate adaptation is the key to increasing link spectral eeciency. We analyze therefore the performance of constant-power variable...

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