Keeping time

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Algorithms for Network Time Keeping

This work describes and evaluates three algorithms for end-to-end time synchronization between a client computer and a server of “true” time (e.g. a GPS source) using messages transmitted over packet switched networks, such as the Internet. The messages exchanged have the NTP format and the algorithms compared, are performed only at the client side. They are based on adaptive (Kalman) filtering...

متن کامل

Keeping Time without a Clock

The accepted dogma in circadian biology is that the transcription factor CLOCK lies at the heart of the molecular clock that drives behavioral and molecular rhythms. In this issue of Neuron, the generation of CLOCK-deficient mice with only subtle clock defects by DeBruyne et al. shakes up this view of the mammalian clock.

متن کامل

The Christian and Time-keeping in Colossians

Traditionally, Col2:16 and Gal 4: 10 are understood as the negation of Christian observance of Jewish time-keeping schemes, including Sabbath observance. However, Troy Martin has recently proposed radical reinterpretations of these two verses, which are consistent with the continued Christian observance of the Jewish religious calendar.' For Martin, the major problem with the traditional interp...

متن کامل

Rhythmic Ca2+ Signaling: Keeping Time with MicroRNAs

Pacemaker cells are specialized cell types that drive biological rhythms like the heartbeat and intestinal peristalsis. What determines whether a cell functions as a pacemaker? Studies in Caenorhabditis elegans suggest that pacemaking activity may be controlled in part by microRNAs.

متن کامل

Keeping time: effects of focal frontal lesions.

This study examined the performance of 32 normal subjects and 39 patients with focal lesions of the frontal lobes on two simple timing tasks-responding in time with a tone that regularly repeated at a rate of once every 1.5s, and then maintaining the same regular response rhythm without any external stimulus. The hypothesis was that lesions to the right prefrontal cortex would disrupt timing pe...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Nature

سال: 1999

ISSN: 0028-0836,1476-4687

DOI: 10.1038/35011508