Pulling the rug out from under the stacks (revisited)
نویسندگان
چکیده
منابع مشابه
the effect of traffic density on the accident externality from driving the case study of tehran
در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...
15 صفحه اولTranscription Termination: Pulling Out All the Stops
In this issue, Larson et al. (2008) describe the use of optical traps to pull on the DNA template or RNA transcript and thereby explore the termination mechanism for E. coli RNA polymerase at intrinsic terminators. Their results imply that, depending on the nature of the terminator sequence, RNA polymerase uses either hypertranslocation or RNA:DNA shearing to destabilize the hybrid in the trans...
متن کاملPulling out gene silencers
eterochromatin’s repressive hold on DNA transcription can only be relinquished when activators enter the nucleus. Or so the theory goes. But now Vanessa Witte, Andreas Baur (University of Erlangen, Germany), and colleagues find that a heterochromatin component can be pulled from the nucleus by both the HIV protein Nef and activated integrins. “This is a really new concept—that chromatin-associa...
متن کاملOut From Under the Trees
This work is motivated by the observation that hard disk seek capability per byte of storage has declined exponentially for decades, and yet most popular access structures are still based on basic ideas proposed 30 years ago. These access structures are typically seek-intensive. In this paper, we propose a new paradigm for data access and organization called the linear file, which aims to drast...
متن کاملPulling Out the Stops: Rethinking Stopword Removal for Topic Models
It is often assumed that topic models benefit from the use of a manually curated stopword list. Constructing this list is timeconsuming and often subject to user judgments about what kinds of words are important to the model and the application. Although stopword removal clearly affects which word types appear as most probable terms in topics, we argue that this improvement is superficial, and ...
متن کاملذخیره 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: College & Research Libraries News
سال: 1988
ISSN: 2150-6698,0099-0086
DOI: 10.5860/crln.49.5.288