Results 111 to 120 of about 3,286,710 (378)
International Journal of Environmental Research and Public Health, 2017 The aim of this study was to investigate the relationship between mobile phone use and insomnia and depression in adolescents. A cross-sectional study was conducted on 295 high school students aged 15–19 in Japan.
H. Tamura +3 more
semanticscholar +1 more source
Advanced Materials, EarlyView.This study reports a near‐infrared (NIR) luminescent material (Mg2SiO4:1.5%Cr,5%Li) with efficient (EQE = 48%) ultra‐broadband (FWHM ≈ 2413 cm−1 (226 nm)) NIR emission at 960 nm upon blue‐light excitation. This innovation addresses the low efficiency of long‐wavelength (λmax > 900 nm) NIR‐emitting materials due to the radiationless de‐activation and ...
Lei Zhong +11 more
wiley +1 more source
Digitalization in Education - Effects on Classroom Management1
Journal of Education, Society & MulticulturalismIn the last decades, especially in the post-pandemic period, the digitization phenomenon has gained momentum in all sectors of social life, including the educational environment.
Petrescu Ana-Maria Aurelia +3 more
doaj +1 more source
It's the Human that Matters: Accurate User Orientation Estimation for Mobile Computing Applications
, 2014 Ubiquity of Internet-connected and sensor-equipped portable devices sparked a new set of mobile computing applications that leverage the proliferating sensing capabilities of smart-phones.
Aly, Heba +3 more
core +1 more source
A High‐Durability Triboelectric Nanogenerator for Broad‐Spectrum Wind Energy Harvesting
Advanced Materials Interfaces, EarlyView.This study presents an easy‐starting and high‐durability triboelectric nanogenerator (ESHD‐TENG) for efficient broad‐spectrum wind energy harvesting. By integrating a fan blade design and a mode‐switching mechanism, the device achieves a low cut‐in wind speed of 0.9 m −1s and significantly enhanced durability, addressing key challenges in current TENG ...
Long Jin +8 more
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2017 Conversion of D-glucose to 4-C-hydroxymethyl-1,2-O-isopropylidene-α-D-ribofuranose, which is a key precursor for the synthesis of different types of bicyclic/spiro nucleosides, led to the formation of an inseparable 1:1 mixture of the desired product and
Neha Rana +4 more
doaj +1 more source
Comparative Study of Modulation Techniques for Two-Level Voltage Source Inverters
Renewable Energy and Sustainable Development, 2016 A detailed comparative study of modulation techniques for single and three phase dc-ac inverters is presented. Sinusoidal Pulse Width Modulation, Triplen Sinusoidal Pulse Width Modulation, Space Vector Modulation, Selective Harmonic Elimination and ...
Barry W. Williams +3 more
doaj +1 more source
Journal of Medical Internet Research, 2015 Background To our knowledge, no meta-analysis to date has assessed the efficacy of mobile phone apps to promote weight loss and increase physical activity.
G. Flores Mateo +3 more
semanticscholar +1 more source
Modeling the Temporal Nature of Human Behavior for Demographics Prediction
, 2017 Mobile phone metadata is increasingly used for humanitarian purposes in developing countries as traditional data is scarce. Basic demographic information is however often absent from mobile phone datasets, limiting the operational impact of the datasets.
A Wesolowski +8 more
core +1 more source
Mucosa‐Interfacing Capsule for In Situ Sensing the Elasticity of Biological Tissues
Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.A fundamental mechanism of palpating soft materials is reported to sense deep tissue elasticity in situ with minimal invasion using the interaction between the robot palpation unit and soft tissues. Both the robot locomotion and elasticity sensing functions are remotely controlled by external magnetic fields, while the sensing data are wirelessly ...
Kiyoung Kim +10 more
wiley +1 more source