Currently, Pt-M bimetallic alloy nanoparticles like PtMo, PtRu, PtW and PtNi have shown promise for proton exchange membrane fuel cells (PEMFCs) applications, due to their high electrocatalytic activity and CO tolerance on pristine carbon supports. Meanwhile, our previous research has indicated that Pt nanoparticles are significantly stabilized on boron-doped carbon supports. In this work, we u...

In this paper, we consider using a semiparametric regression approach to modelling non-linear autoregressive time series. Based on a ®nite series approximation to non-parametric components, an adaptive selection procedure for the number of summands in the series approximation is proposed. Meanwhile, a large sample study is detailed and a small sample simulation for the Mackey±Glass system is pr...

In the complex operation environment of high-speed trains, the comprehensive evaluation index systems with high scientificity and measurability have been established after the all-round analysis of various effects on comfort for high-speed train. Meanwhile, a comprehensive evaluation method on comfort for high-speed train has been built by the rough set theory and multidimensional coefficient t...

*Correspondence: [email protected] 1College of Science, China Agricultural University, Beijing, 100083, China Full list of author information is available at the end of the article Abstract This paper investigates the existence of concave positive solutions and establishes corresponding iterative schemes for a third-order boundary value problem with Riemann-Stieltjes integral boundary conditions....

During the past 2 years, worldwide considerable advances have been made in the field of pediatric cardiology, including the elucidation of the mechanisms responsible for cardiovascular diseases and the development of diagnostic techniques and treatment strategies. Meanwhile, we should be aware that the genetics, environmental factors and their interactions involved in the mechanisms for a varie...

Real-time intensive signal processing applications have been traditionally deployed on various custom platforms. Meanwhile, the enterprise computing market had spurred the advent of inexpensive and powerful systems based on widely available processors. Today, SMP systems associating a potentially large number of recent processors are deemed to cope with the needs of the most demanding real-time...

XML, which can be used in Internet directly and applied in various application programs, is widely used in E-government construction. The thesis discussed related technologies about XML and some kinks of XML parsing technologies that implemented by Java. Besides, it analyzed the format of the national E-document based on XML. Meanwhile SAX is suggested as the technology for E-document parsing t...

A 57-year-old male patient was referred to the Department of Emergency with a chief complaint of a 2-month history of back pain and short of breath for 1 day. Meanwhile, he developed hypertension 1 month ago that was not treated. The patient denied any history of trauma, operation, allergy, any types of hepatitis, or other potential infectious diseases. Thoracic computed tomography angiography ...

We provide experiments that had been conducted to investigate the particle trajectory beneath a solitary water wave. Experimental results show that the surface drift is larger than the bottom drift. Meanwhile, the ratio of the net horizontal displacement to the total height of the trajectory at the free surface and subsurface will decrease with the initial vertical position and increase with th...

A fruitful idea, when providing subdifferential formulae and dual representations for convex risk measures, is to make use of the conjugate duality theory in convex optimization. In this paper we underline the outstanding role played by the qualification conditions in the context of different problem formulations in this area. We show that not only the meanwhile classical generalized interiorit...