نتایج جستجو برای: sensing

تعداد نتایج: 124947  

2012
Xie Xu Mahsa Mirzargar Alireza Entezari

We propose an alternative volumetric data modeling and reduction approach via compressive sensing theory. We provide evidence that with a small set of randomly chosen Fourier samples of a dataset, it is possible to recover the dataset accurately. Our experiments demonstrate that the number of samples necessary for an accurate reconstruction is linearly proportional to the number of features, as...

2012
John Novak

Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including...

Journal: :journal of physical & theoretical chemistry 2009
. thanasanvorakun pongsri mangkomtong majid monajjemi nikom sangkorntong

sn02 nanowires with diameters of 30 — 200 nm have been synthesized by using carbothermalprocess via a thick film of tin dioxide and carbon powder precursor. the nanowires werecharacterized by x-ray power diffraction (xrd), scanning electron microscopy (sem),transmission electron microscopy (tem) and selected area electron diffraction (saed).the gas sensing characteristic of nanowires toward eth...

Journal: :journal of nanostructures 2013
h. abbasian d. ghanbari g. nabiyouni

cupric oxide nanostructures were synthesized via a simple reaction between copper nitrate and sodium hydroxide using a sonochemical-assisted method. the synthesized cuo was then characterized using x-ray diffraction, scanning electron microscopy, transmission electron microscopy, fourier transform infrared, ultraviolet-visible and photoluminescence spectroscopy. our studies show that the cuo na...

2012
Diego Muñoz-Torrero Diego Haro Joan Vallès Mariona Hernández-Mariné Mónica Roldán Molina Mónica Roldán

Microorganisms group themselves into assemblies known as communities or biofilms, which are associated with surfaces. A matrix of self-segregated polymeric substances enhances their attachment. Communication between bacterial cells involves the production and detection of diffusible signal molecules, known as quorum sensing, which is an important regulatory mechanism of biofilm strategies. Biof...

Journal: :Ad Hoc & Sensor Wireless Networks 2016
Juan Luo Zanyi He Yu Liu Junli Zha Keqin Li

Localization is highly critical for wireless sensor network applications. The present paper makes the following noticeable contributions. First, an energy confirmable overlapping tracking algorithm for mobile targets is proposed in wireless sensor networks. Different from most target localization algorithms based on compressive sensing, it improves localization accuracy through overlapping area...

2015
Lokendra Singh Anuj Sharma

In the present time bandwidth efficiency is one of the most important parameter to measure different modulation scheme in digital communication. Due to the separation of waveforms of all the existing modulation schemes in time domain it becomes difficult to improve their bandwidth efficiency. Hence it was become very important for researchers to proposed such a scheme that able to improves the ...

2013
Sarangam Majumdar

In this presentation the hydro dynamical condition of quorum sensing in the biofilm growth is investigated using convection diffusion reaction equation and analyzed environmental condition. It is used to analyze the influence of hydrodynamics and structural heterogeneities on mass transfer in this quorum sensing mechanism. The future direction of stochastic model of quorum sensing in bacteria i...

Journal: :Analytical and bioanalytical chemistry 2007
Anne K Dunn Eric V Stabb

Bacterial quorum-sensing regulatory systems can be summarized in a simple model wherein an autoinducer molecule accumulates in cultures and stimulates regulatory changes in gene expression upon reaching a critical threshold concentration. Although quorum sensing was originally thought to be an isolated phenomenon governing the regulation of a handful of processes in only a few bacteria, it is n...

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