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السجلات المعروضة 2441 -- 2460 من 3324
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Robust index-tracking and enhanced index-tracking in portfolio optimization
( Ascociacion Internacional de Economia Aplicada , 2020 , Article)We study index-tracking and enhanced index-tracking problems in portfolio optimization under interval uncertainty for returns and covariance matrix. The proposed robust counterparts for both models are in the form of second ... -
Robust profile monitoring for phase II analysis via residuals
( Wiley , 2022 , Article)Many studies were conducted for fitting models using parametric and non-parametric techniques; in fact, their fits may be biased and have inflated the estimated variances when the model is misspecified, respectively. Thus, ... -
Robust stabilization of LTI negative imaginary systems using the nearest negative imaginary controller
( John Wiley and Sons Inc , 2023 , Article)This paper considers the problem of robust stabilization of linear time-invariant systems with respect to unmodelled dynamics and structure uncertainties. To that end, a methodology to find the nearest negative imaginary ... -
Robustification of CUSUM control structure for monitoring location shift of skewed distributions based on modified one-step M-estimator
( Taylor and Francis Inc. , 2019 , Article)Including three existing charts, a new approach employing a modified one-step M-estimator (MOM) with Cumulative Sum (CUSUM) control structure were evaluated and compared for their Phase II performances based on the average ... -
The Role of Attention in Word Recognition: Results from OB1-Reader
( Wiley-Blackwell , 2020 , Article)When reading, orthographic information is extracted not only from the word the reader is looking at, but also from adjacent words in the parafovea. Here we examined, using the recently introduced OB1-reader computational ... -
Role of doping and sheet size in tailoring optoelectronic properties of germanene: A TDDFT study
( John Wiley and Sons Inc. , 2018 , Article)Germanene is a novel 2D material with promising optoelectronic properties, tuning of which is to be explored. This work demonstrates that doping and increasing the sheet size can alter optical and electronic properties of ... -
The Role of Media Literacy in Mitigating COVID-19 Vaccine Hesitancy and Conspiracy Theories
( University of Southern California , 2023 , Article)This study examines the relationship between media literacy, belief in conspiracy theories, and vaccine hesitation through a survey of 3,009 university students in 8 Arab countries. The findings provide evidence that ... -
Role of metal oxide nanofibers in water purification
( Elsevier , 2021 , Book chapter)Water treatment through nanomaterials and nanocomposites is a booming research area, since water resources are of prime importance for human sustainability. Having high permeability, optimum pore size, and specific surface ... -
Role of organic cation in modern lead-based perovskites
( Elsevier Ltd , 2019 , Article)Hybrid organic-inorganic metal perovskites (ABX3, A- organic cation, B-metal ion, X-halide ion) have shown significant potential as thin-film solar cells or Dye solar cells (DSC) materials. Using a time-dependent density ... -
Role of Post-Hydrothermal Treatment on the Microstructures and Photocatalytic Activity of TiO2-Based Nanotubes
( MDPI , 2022 , Article)The present study demonstrates the thermal stability and photocatalytic activity of TiO2-based nanotubes with respect to post-hydrothermal treatment. Titanate nanotubes were synthesized by adapting an alkali hydrothermal ... -
Role of Solvent Polarity and Hydrogen-Bonding on Excited-State Fluorescence of 3-[(E)-{4-[Dimethylamino]benzylidene}amino]-2-naphthoic Acid (DMAMN): Isomerization vs Rotomerization
( American Chemical Society , 2018 , Article)The present experimental and theoretical study on a new chromophore DMAMN of the type push-?-pull (push = dimethylaniline, ? = imine, pull = 2-naphthoic acid), allows understanding of the mechanism by which the molecular ... -
The Role of the GCC Countries in Ending Piracy in the Horn of Africa
( Center for Research and Policy Studies , 2016 , Article)Piracy in the Horn of Africa has had a far-reaching security and economic impact both globally and regionally. The World Bank estimated that between 2008 and 2012, the global economy lost $18 billion annually due to Somali ... -
Roll-over cyclometalation: A versatile tool to enhance the catalytic activity of transition metal complexes
( Elsevier B.V. , 2018 , Article)Roll-over cyclometalation is a special case of cyclometalation. While in classical cyclometalation, C,H-activation (deprotonation or oxidative addition) has to occur at the ligand to result in a metallacycle, in roll-over ... -
Room-Temperature Lasing Action in GaN Quantum Wells in the Infrared 1.5 ?m Region
( American Chemical Society , 2018 , Article)Large-scale optoelectronics integration is strongly limited by the lack of efficient light sources, which could be integrated with the silicon complementary metal-oxide-semiconductor (CMOS) technology. Persistent efforts ... -
Rotavirus strain diversity in the Centre Coast of Tunisia from 2000 through 2003
( Oxford University Press , 2010 , Article)An epidemiological survey investigating rotavirus infection in children was undertaken in the coastal region of Tunisia from January 2000 through September 2003. A total of 309 fecal specimens were screened by enzyme-linked ... -
Rough oscillatory singular integrals on ℝⁿ
( Instytut Matematyczny , 2014 , Article)We establish sharp bounds for oscillatory singular integrals with an arbitrary real polynomial phase P. The kernels are allowed to be rough both on the unit sphere and in the radial direction. We show that the bounds grow ... -
Routledge handbook of the arab spring: Rethinking democratization
( Taylor and Francis , 2014 , Book)The self-immolation of Mohammed Bouazizi in Tunisia in December 2010 heralded the arrival of the ‘Arab Spring, ' a startling, yet not unprecedented, era of profound social and political upheaval. The meme of the Arab Spring ... -
Routledge Handbook on Arab Media
( Taylor and Francis , 2020 , Book)Routledge Handbook on Arab Media Edited by Noureddine Miladi and Noha Mellor This Handbook provides the first comprehensive reference book in English about the development of mass and social media in all Arab countries. ... -
Run Rules-Based EWMA Charts for Efficient Monitoring of Profile Parameters
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In usual quality control methods, the quality of a process or product is evaluated by monitoring one or more quality characteristics using their corresponding distributions. However, when the quality characteristic is ... -
Rural development program in tribal region: A protocol for adaptation and addressing climate change vulnerability
( Elsevier Ltd , 2017 , Article)Tribal peoples globally are among the most vulnerable groups to climate change and variability. This is due to a combination of their relative poverty and their dependence on agriculture and natural support systems (NSS). ...
