Results 91 to 100 of about 803,094 (287)

The optical microvariability and spectral changes of the BL Lacertae object S5 0716+714

, 2009
We monitored the BL Lac object S5 0716+714 in the optical band during October 2008, December 2008 and February 2009 with a best temporal resolution of about 5 minutes in the BVRI bands. Four fast flares were observed with amplitudes ranging from 0.3 to 0.
Camenzind, Espaillat, Fan, Fan, Ghisellini, Gopal-Krishna & Wiita, Gupta, Gupta, H. Poon, Heidt, J. H. Fan, J. N. Fu, Lainela, Maraschi, Marscher, Marscher, Peterson, Qian, Qian, Qian, Quirrenbach, Rani, Romero, Schlegel, Villata, Wagner, Wiita, Wiita, Wu, Wu, Zhou   +30 more
core   +1 more source

Race and Household Income are Associated with Disease Outcomes in Pediatric Patients with ANCA‐associated Vasculitis Hospitalized in the United States

Arthritis Care &Research, Accepted Article.
Objectives Race and household income impact outcomes in patients with rheumatic conditions; however, their role in pediatric anti‐neutrophil cytoplasmic antibody (ANCA)‐associated vasculitis (AAV) remains poorly understood. We aimed to evaluate whether race/ethnicity and household income are associated with severe AAV disease and renal outcomes among ...
Roberto Alejandro Valdovinos, William Daniel Soulsby III, Emily von Scheven   +2 more
wiley   +1 more source

Job Crafting, Work Engagement, Burnout: Mediating Role of Self-Efficacy

Studia Psychologica, 2020
Based on the Job Demands-Resources model (JD-R) the aim of this study was to verify work engagement and burnout prediction models in relation to self-efficacy and four job crafting strategies: increasing structural job resources, increasing challenging ...
Eva Rošková, Lucia Faragová
doaj   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

International Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg, Paulo Jefferson Dias de Oliveira Evald, Shivam Chaturvedi, Hilton Abilio Gründling, Rodrigo Varella Tambara, Wencong Su   +5 more
wiley   +1 more source

Job Design and Innovative Work Behavior: One Size Does Not Fit All Types of Employees

Journal of Entrepreneurship, Management and Innovation, 2012
As innovative employees become imperative for an organizations’ success, research identified job design as a crucial variable in promoting innovative work behavior (IWB) (Hammond et al., 2011).
Stan De Spiegelaere, Geert Van Hootegem, Guy Van Gyes   +2 more
doaj   +1 more source

Reduction formula for fermion loops and density correlations of the 1D Fermi gas

, 1999
Fermion N-loops with an arbitrary number of density vertices N > d+1 in d spatial dimensions can be expressed as a linear combination of (d+1)-loops with coefficients that are rational functions of external momentum and energy variables.
Metzner, Walter, Neumayr, Arne
core   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Examining university student burnout in relation to demands, resources and perfectionism: The mediating role of emotional regulation [PDF]

Journal of Pedagogical Research
Student burnout is an important mental health issue in higher education. The development of the symptoms is often described by the Demand-Resource Model.
Enikő Tóth, Balázs Jagodics
doaj   +1 more source

The Role of Ultra‐Thin Buffer Layers for Achieving Ultra‐Low Dark Currents in Single‐Component Organic Photodetectors

Advanced Functional Materials, EarlyView.
Here, SubNc single‐component organic photodiodes (SC‐OPDs) are investigated, which achieve highly competitive performance metrics, including high EQE, ultra‐low JD, and high specific detectivity (D*). This study emphasizes the critical role of an organic buffer layer in studying the interface energetics and effects to achieve state‐of‐the‐art ...
Anncharlott Kusber, Ying Sun, Jakob Wolansky, Louis Conrad Winkler, Anna‐Lena Hofmann, Fred Kretschmer, Hrisheekesh Thachoth Chandran, Tianyi Zhang, Mike Hambsch, Stefan C. B. Mannsfeld, Karl Leo, Ji‐Seon Kim, Johannes Benduhn   +12 more
wiley   +1 more source

Psychological capital, leadership styles and work engagement amongst women teachers in Saudi Arabia’s public schools: the moderating roles of person-organisation fit / Eman Nafa Aljaghthami [PDF]

, 2017
A research reported that the ratio of engaged employees in Saudi Arabia is lesser than the world’s average rate, in which only four out of ten males and women Saudis are engaged, compared to six in every ten as the average in the world.
Aljaghthami, Eman Nafa
core