Results 81 to 90 of about 918,755 (343)

Circularly Polarized Structural Color Pigments Tunable Across the Full Visible Spectrum

open access: yesAdvanced Optical Materials, EarlyView.
By infusing black dye into spherical shells of polymerized cholesteric liquid crystal, blue, green and red omnidirectional retroreflectors of circularly polarized structural color are achieved. They can be laid out on arbitrary surfaces without any need for index matching binder to define graphical information for robots and Augmented Reality devices ...
Deniz Işınsu Avşar   +1 more
wiley   +1 more source

Organic Light‐Emitting Diode in Phototherapy Applications

open access: yesAdvanced Photonics Research, EarlyView.
This article systematically reviews the development of organic light‐emitting diodes (OLEDs) in phototherapy, constructs a technical framework, and establishes a multidimensional knowledge graph encompassing indications, wavelengths, and light intensity.
Yingguang Zhu   +9 more
wiley   +1 more source

The association of sleep and late-night cell phone use among adolescents

open access: yesJornal de Pediatria
Objective: This study aims to assess the relationship of late-night cell phone use with sleep duration and quality in a sample of Iranian adolescents. Methods: The study population consisted of 2400 adolescents, aged 12-18 years, living in Isfahan, Iran.
Babak Amra   +7 more
doaj   +1 more source

The dimensions of brand romance as predictors of brand loyalty among cell phone users

open access: yesSouth African Journal of Economic and Management Sciences, 2014
In a competitive cell phone industry where consumers have a wide variety of cell phone brands to choose from, it is imperative for marketers to foster brand loyalty in order to establish enduring consumer-brand relationships.
Danie Petzer   +3 more
doaj   +1 more source

Global Publics Embrace Social Networking [PDF]

open access: yes, 2010
Analyzes survey results on trends in the use of social networking sites, cell phone and computer ownership, and use of Internet and e-mail in twenty-two countries by age, gender, and education.

core  

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

open access: yesAdvanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

Cell internet use 2013 [PDF]

open access: yes
Nearly two thirds of US cell phone owners use their phone to go online, and one in five cell owners do most of their online browsing on their phone.These are findings from a national telephone survey conducted April 17-May 19, 2013 among 2,252 adults ...
Aaron Smith, Maeve Duggan
core  

Internet, Broadband, and Cell Phone Statistics [PDF]

open access: yes, 2010
Presents December 2009 survey data on Americans' use of the Internet, broadband connections at home, wireless connections, and cell phones by demographics and community type.
Lee Rainie
core  

Smart REASSURED Sensors via Machine‐Augmented Printable On‐Paper Arrays

open access: yesAdvanced Sensor Research, EarlyView.
This perspective highlights the emerging role of pattern‐recognition, printable on‐paper sensor arrays for intelligent PoC diagnostics. It discusses how paper's inherent limitations can be overcome through surface modification and scalable printing, and how machine‐learning analysis of cross‐reactive arrays enables multiplexed, low‐cost, and REASSURED ...
Naimeh Naseri, Saba Ranjbar
wiley   +1 more source

THE USE OF CELL PHONE IN THE TEACHING OF INTEGRATED ENGLISH COURSE: A TECHNIQUE TO CULTIVATE AUTONOMY LEARNING [PDF]

open access: yes, 2016
The development of the technology and its implication in the teaching and learning process are widespread all around the world. At the present time, both of the teacher and student cannot isolate themself from technology.
Heriyawati, Dwi Fita
core  

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