Results 21 to 30 of about 12,496 (247)

PROPUESTA DE UN SISTEMA NEURO-DBR Y SU APLICACIÓN EN LA PREDICCIÓN DE LA SERIE DE TIEMPO DE LORENZ

Ciencia e Ingeniería Neogranadina, 2010
Este artículo propone la predicción de la serie de tiempo Lorenz usando un nuevo método conocido como sistema Neuro-DBR y su comparación, con un diseño Neurodifuso convencional.
Lina Morales Laguado, Helbert Espitia Cuchango, José Soriano Méndez   +2 more
doaj   +3 more sources

Optical engineering of PbS colloidal quantum dot solar cells via Fabry–Perot resonance and distributed Bragg reflectors

Nano Convergence, 2023
A tradeoff between light absorption and charge transport is a well-known issue in PbS colloidal quantum dot (CQD) solar cells because the carrier diffusion length in PbS CQD films is comparable to the thickness of CQD film. We reduce the tradeoff between
Sumin Bae, Matthew Duff, Jun Young Hong, Jung-Kun Lee   +3 more
doaj   +1 more source

Void Hole Avoidance for Reliable Data Delivery in IoT Enabled Underwater Wireless Sensor Networks

Sensors, 2018
Due to the limited availability of battery power of the acoustic node, an efficient utilization is desired. Additionally, the aquatic environment is harsh; therefore, the battery cannot be replaced, which leaves the network prone to sudden failures. Thus,
Arshad Sher, Aasma Khan, Nadeem Javaid, Syed Hassan Ahmed, Mohammed Y Aalsalem, Wazir Zada Khan   +5 more
doaj   +1 more source

InGaN Resonant-Cavity Light-Emitting Diodes with Porous and Dielectric Reflectors

Applied Sciences, 2020
InGaN based resonant-cavity light-emitting diode (RC-LED) structures with an embedded porous-GaN/n-GaN distributed Bragg reflector (DBR) and a top dielectric Ta2O5/SiO2 DBR were demonstrated.
Cheng-Jie Wang, Ying Ke, Guo-Yi Shiu, Yi-Yun Chen, Yung-Sen Lin, Hsiang Chen, Chia-Feng Lin   +6 more
doaj   +1 more source

Risk Factors of Duodenobiliary Reflux-Related Dysfunction of Covered Biliary Metal Stents after Treatment of Duodenal Stricture in Patients with Malignant Biliary and Duodenal Obstruction

Current Oncology, 2021
Duodenal obstruction is often accompanied with unresectable malignant distal biliary obstruction in patients who have undergone biliary self-expandable metal stent (SEMS) placement.
Chi-Huan Wu, Mu-Hsien Lee, Yung-Kuan Tsou, Cheng-Hui Lin, Kai-Feng Sung, Kuang-Tse Pan, Nai-Jen Liu   +6 more
doaj   +1 more source

Optical Tamm state theory study on asymmetric DBR-metal-DBR structure

Acta Physica Sinica, 2013
As a special metal surface state, optical Tamm state (OTS) has been widely used in designing the new generation of optical devices for its unique advantages in light control and operation. Based on distribute Bragg reflector (DBR)-metal-DBR (DMD)structure, asymmetric mechanism is introduced by mismatching central frequencies of the two DBRs to design ...
null Jiang Yao, null Zhang Wei-Li, null Zhu Ye-Yu   +2 more
openaire   +1 more source

Development of high-speed directly-modulated DFB and DBR lasers with surface gratings [PDF]

, 2011
The conventional distributed feedback and distributed Bragg reflector edge-emitting lasers employ buried gratings, which require two or more epitaxial growth steps.
M. Dumitrescu, Sek, G., REITHMAIER J. P., EISENSTEIN G., KARINEN J., P. Bardella, P. Melanen, MELANEN P., GREADY D., SEK G., G. Sek, O. Parillaud, S. Afzal, Laakso, A., J. Telkkälä, Reithmaier J.-P., Afzal, S., P. Uusimaa, Montrosset, Ivo, D. Gready, PARILLAUD O., Melanen, P., Bardella, Paolo, Vallone, Marco Ernesto, VIHERIÄLÄ J., KAMP M., Telkkälä, J., J.-P. Reithmaier, J. Karinen, Parillaud, O., Dumitrescu, M., DUMITRESCU M., Gready, D., M. Vallone, M. Krakowski, G. Eisenstein, Uusimaa, P., Viheriälä, J., A. Laakso, I. Montrosset, Eisenstein, G., J. Viheriälä, Karinen, J., AFZAL S., LAAKSO A., TELKKÄLÄ J., UUSIMAA P., Kamp, M., M. Kamp   +48 more
core   +1 more source

Effect of Dielectric Distributed Bragg Reflector on Electrical and Optical Properties of GaN-Based Flip-Chip Light-Emitting Diodes

Micromachines, 2018
We demonstrated two types of GaN-based flip-chip light-emitting diodes (FCLEDs) with distributed Bragg reflector (DBR) and without DBR to investigate the effect of dielectric TiO2/SiO2 DBR on optical and electrical characteristics of FCLEDs.
Shengjun Zhou, Haohao Xu, Mengling Liu, Xingtong Liu, Jie Zhao, Ning Li, Sheng Liu   +6 more
doaj   +1 more source

Dragon blood resin ameliorates steroid-induced osteonecrosis of femoral head through osteoclastic pathways

Frontiers in Cell and Developmental Biology, 2023
Objective: Dragon’s Blood resin (DBR) is a traditional medicinal substance renowned for its diverse pharmacological effects, which consists of potent anti-inflammatory, antioxidant and angiogenic properties.
Yuhao Liu, Liang Mo, Hongduo Lu, Yangwenxiang Wei, Jiahao Zhang, Samuel Bennett, Jiake Xu, Jiake Xu, Chi Zhou, Bin Fang, Zhenqiu Chen   +10 more
doaj   +1 more source

Die Blackbox ausleuchten. Potenziale von Design-Based Research für Phasen der Lehrerinnen- und Lehrerprofessionalisierung

Beiträge zur Lehrerinnen- und Lehrerbildung, 2020
Design-Based Research (DBR) wird als Forschungsstil in den letzten Jahren auch im deutschsprachigen Raum verstärkt genutzt. DBR meint die Arbeit mit einem doppelten Erkenntnisinteresse: das Entwickeln von Unterrichtsdesigns für die unterrichtliche ...
Isolde Malmberg
doaj   +1 more source