نتایج جستجو برای: random pool

تعداد نتایج: 328874  

Katsunobu Sasanuma Richard C. Larson

Drivers in urban neighborhoods who patrol streets, seeking inexpensive on-street parking create a significant fraction of measured traffic congestion. The pool of drivers patrolling at any time can be modeled as a queue, where ‘queue service’ is the act of parking in a recently vacated parking space and queue discipline is SIRO – Service In Random Order. We develop a queueing model of such driv...

Journal: :archives of razi institute 0

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Journal: :TIIS 2008
Aziz Mohaisen DaeHun Nyang Tamer AbuHmed

In this paper, the random key pre-distribution scheme introduced in ACM CCS'02 by Eschenauer and Gligor is reexamined, and a generalized form of key establishment is introduced. As the communication overhead is one of the most critical constraints of any successful protocol design, we introduce an alternative scheme in which the connectivity is maintained at the same level as in the original wo...

Journal: :Science 1993
D P Bartel J W Szostak

An iterative in vitro selection procedure was used to isolate a new class of catalytic RNAs (ribozymes) from a large pool of random-sequence RNA molecules. These ribozymes ligate two RNA molecules that are aligned on a template by catalyzing the attack of a 3'-hydroxyl on an adjacent 5'-triphosphate--a reaction similar to that employed by the familiar protein enzymes that synthesize RNA. The co...

Journal: :Production and Operations Management 2008

Hossein Jafari Mansoorian, Narges Khanjani, Salman Zarei,

Background: Infections are readily transmitted as a result of bacterial contamination of swimming pools. Therefore, hygiene and preventing the contamination of swimming pools is of particular importance. The objective of this study was to determine the amount of bacterial contamination in indoor pools of Yazd in 2013. Methods: In this descriptive and analytical study, all indoor swimming pools ...

Journal: :IEEE Transactions on Information Theory 2022

We show that in pool-based active classification without assumptions on the underlying distribution, if learner is given power to abstain from some predictions by paying price marginally smaller than average loss 1/2 of a random guess, exponential savings number label requests are possible whenever they corresponding realizable problem. extend this result provide necessary and sufficient condit...

Journal: :The Behavioral and brain sciences 2010
Simon Gächter

I argue that the right choice of subject pool is intimately linked to the research question. At least within economics, students are often the perfect subject pool for answering some fundamental research questions. Student subject pools can provide an invaluable benchmark for investigating generalizability across different social groups or cultures.

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2011
Charles J Goodnight

A metacommunity can be defined as a set of communities that are linked by migration, and extinction and recolonization. In metacommunities, evolution can occur not only by processes that occur within communities such as drift and individual selection, but also by among-community processes, such as divergent selection owing to random differences among communities in species composition, and grou...

2018
Hualan Liu Morgan N Price Robert Jordan Waters Jayashree Ray Hans K Carlson Jacob S Lamson Romy Chakraborty Adam P Arkin Adam M Deutschbauer

Transposon mutagenesis coupled to next-generation sequencing (TnSeq) is a powerful approach for discovering the functions of bacterial genes. However, the development of a suitable TnSeq strategy for a given bacterium can be costly and time-consuming. To meet this challenge, we describe a part-based strategy for constructing libraries of hundreds of transposon delivery vectors, which we term "m...

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